| /* |
| * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org> |
| * 1999 Lars Knoll <knoll@kde.org> |
| * 1999 Antti Koivisto <koivisto@kde.org> |
| * 2000 Dirk Mueller <mueller@kde.org> |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
| * (C) 2006 Graham Dennis (graham.dennis@gmail.com) |
| * (C) 2006 Alexey Proskuryakov (ap@nypop.com) |
| * Copyright (C) 2009 Google Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "third_party/blink/renderer/core/frame/local_frame_view.h" |
| |
| #include <algorithm> |
| #include <memory> |
| #include <utility> |
| |
| #include "base/memory/ptr_util.h" |
| #include "third_party/blink/public/mojom/page/page_visibility_state.mojom-blink.h" |
| #include "third_party/blink/public/platform/task_type.h" |
| #include "third_party/blink/public/platform/web_layer.h" |
| #include "third_party/blink/public/platform/web_rect.h" |
| #include "third_party/blink/public/platform/web_scroll_into_view_params.h" |
| #include "third_party/blink/renderer/core/animation/document_animations.h" |
| #include "third_party/blink/renderer/core/css/font_face_set_document.h" |
| #include "third_party/blink/renderer/core/css/style_change_reason.h" |
| #include "third_party/blink/renderer/core/dom/ax_object_cache.h" |
| #include "third_party/blink/renderer/core/dom/element_visibility_observer.h" |
| #include "third_party/blink/renderer/core/editing/drag_caret.h" |
| #include "third_party/blink/renderer/core/editing/frame_selection.h" |
| #include "third_party/blink/renderer/core/editing/markers/document_marker_controller.h" |
| #include "third_party/blink/renderer/core/editing/rendered_position.h" |
| #include "third_party/blink/renderer/core/events/error_event.h" |
| #include "third_party/blink/renderer/core/exported/web_plugin_container_impl.h" |
| #include "third_party/blink/renderer/core/frame/browser_controls.h" |
| #include "third_party/blink/renderer/core/frame/event_handler_registry.h" |
| #include "third_party/blink/renderer/core/frame/local_frame.h" |
| #include "third_party/blink/renderer/core/frame/local_frame_client.h" |
| #include "third_party/blink/renderer/core/frame/location.h" |
| #include "third_party/blink/renderer/core/frame/page_scale_constraints_set.h" |
| #include "third_party/blink/renderer/core/frame/remote_frame.h" |
| #include "third_party/blink/renderer/core/frame/remote_frame_view.h" |
| #include "third_party/blink/renderer/core/frame/settings.h" |
| #include "third_party/blink/renderer/core/frame/visual_viewport.h" |
| #include "third_party/blink/renderer/core/fullscreen/fullscreen.h" |
| #include "third_party/blink/renderer/core/html/forms/text_control_element.h" |
| #include "third_party/blink/renderer/core/html/html_frame_element.h" |
| #include "third_party/blink/renderer/core/html/html_plugin_element.h" |
| #include "third_party/blink/renderer/core/html/parser/text_resource_decoder.h" |
| #include "third_party/blink/renderer/core/html_names.h" |
| #include "third_party/blink/renderer/core/input/event_handler.h" |
| #include "third_party/blink/renderer/core/inspector/inspector_trace_events.h" |
| #include "third_party/blink/renderer/core/intersection_observer/intersection_observer_controller.h" |
| #include "third_party/blink/renderer/core/intersection_observer/intersection_observer_init.h" |
| #include "third_party/blink/renderer/core/layout/adjust_for_absolute_zoom.h" |
| #include "third_party/blink/renderer/core/layout/layout_analyzer.h" |
| #include "third_party/blink/renderer/core/layout/layout_counter.h" |
| #include "third_party/blink/renderer/core/layout/layout_embedded_content.h" |
| #include "third_party/blink/renderer/core/layout/layout_embedded_object.h" |
| #include "third_party/blink/renderer/core/layout/layout_scrollbar.h" |
| #include "third_party/blink/renderer/core/layout/layout_scrollbar_part.h" |
| #include "third_party/blink/renderer/core/layout/layout_view.h" |
| #include "third_party/blink/renderer/core/layout/svg/layout_svg_root.h" |
| #include "third_party/blink/renderer/core/layout/text_autosizer.h" |
| #include "third_party/blink/renderer/core/layout/traced_layout_object.h" |
| #include "third_party/blink/renderer/core/loader/document_loader.h" |
| #include "third_party/blink/renderer/core/loader/frame_loader.h" |
| #include "third_party/blink/renderer/core/media_type_names.h" |
| #include "third_party/blink/renderer/core/page/autoscroll_controller.h" |
| #include "third_party/blink/renderer/core/page/chrome_client.h" |
| #include "third_party/blink/renderer/core/page/focus_controller.h" |
| #include "third_party/blink/renderer/core/page/frame_tree.h" |
| #include "third_party/blink/renderer/core/page/page.h" |
| #include "third_party/blink/renderer/core/page/print_context.h" |
| #include "third_party/blink/renderer/core/page/scrolling/root_scroller_util.h" |
| #include "third_party/blink/renderer/core/page/scrolling/scrolling_coordinator.h" |
| #include "third_party/blink/renderer/core/page/scrolling/scrolling_coordinator_context.h" |
| #include "third_party/blink/renderer/core/page/scrolling/snap_coordinator.h" |
| #include "third_party/blink/renderer/core/page/scrolling/top_document_root_scroller_controller.h" |
| #include "third_party/blink/renderer/core/paint/block_paint_invalidator.h" |
| #include "third_party/blink/renderer/core/paint/compositing/composited_layer_mapping.h" |
| #include "third_party/blink/renderer/core/paint/compositing/composited_selection.h" |
| #include "third_party/blink/renderer/core/paint/compositing/compositing_inputs_updater.h" |
| #include "third_party/blink/renderer/core/paint/compositing/paint_layer_compositor.h" |
| #include "third_party/blink/renderer/core/paint/frame_painter.h" |
| #include "third_party/blink/renderer/core/paint/paint_layer.h" |
| #include "third_party/blink/renderer/core/paint/paint_timing.h" |
| #include "third_party/blink/renderer/core/paint/pre_paint_tree_walk.h" |
| #include "third_party/blink/renderer/core/probe/core_probes.h" |
| #include "third_party/blink/renderer/core/resize_observer/resize_observer_controller.h" |
| #include "third_party/blink/renderer/core/style/computed_style.h" |
| #include "third_party/blink/renderer/core/svg/svg_svg_element.h" |
| #include "third_party/blink/renderer/platform/bindings/script_forbidden_scope.h" |
| #include "third_party/blink/renderer/platform/fonts/font_cache.h" |
| #include "third_party/blink/renderer/platform/geometry/double_rect.h" |
| #include "third_party/blink/renderer/platform/geometry/float_rect.h" |
| #include "third_party/blink/renderer/platform/geometry/layout_rect.h" |
| #include "third_party/blink/renderer/platform/geometry/transform_state.h" |
| #include "third_party/blink/renderer/platform/graphics/compositing/paint_artifact_compositor.h" |
| #include "third_party/blink/renderer/platform/graphics/graphics_context.h" |
| #include "third_party/blink/renderer/platform/graphics/graphics_layer.h" |
| #include "third_party/blink/renderer/platform/graphics/graphics_layer_debug_info.h" |
| #include "third_party/blink/renderer/platform/graphics/paint/cull_rect.h" |
| #include "third_party/blink/renderer/platform/graphics/paint/foreign_layer_display_item.h" |
| #include "third_party/blink/renderer/platform/graphics/paint/paint_controller.h" |
| #include "third_party/blink/renderer/platform/graphics/paint/scoped_paint_chunk_properties.h" |
| #include "third_party/blink/renderer/platform/histogram.h" |
| #include "third_party/blink/renderer/platform/instrumentation/tracing/trace_event.h" |
| #include "third_party/blink/renderer/platform/instrumentation/tracing/traced_value.h" |
| #include "third_party/blink/renderer/platform/json/json_values.h" |
| #include "third_party/blink/renderer/platform/language.h" |
| #include "third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h" |
| #include "third_party/blink/renderer/platform/platform_chrome_client.h" |
| #include "third_party/blink/renderer/platform/runtime_enabled_features.h" |
| #include "third_party/blink/renderer/platform/scheduler/public/frame_scheduler.h" |
| #include "third_party/blink/renderer/platform/scroll/scroll_alignment.h" |
| #include "third_party/blink/renderer/platform/scroll/scroll_animator_base.h" |
| #include "third_party/blink/renderer/platform/scroll/scrollbar_theme.h" |
| #include "third_party/blink/renderer/platform/wtf/std_lib_extras.h" |
| #include "third_party/blink/renderer/platform/wtf/time.h" |
| |
| // Used to check for dirty layouts violating document lifecycle rules. |
| // If arg evaluates to true, the program will continue. If arg evaluates to |
| // false, program will crash if DCHECK_IS_ON() or return false from the current |
| // function. |
| #define CHECK_FOR_DIRTY_LAYOUT(arg) \ |
| do { \ |
| if (!(arg)) { \ |
| NOTREACHED(); \ |
| return false; \ |
| } \ |
| } while (false) |
| |
| namespace blink { |
| namespace { |
| |
| // Page dimensions in pixels at 72 DPI. |
| constexpr int kA4PortraitPageWidth = 595; |
| constexpr int kA4PortraitPageHeight = 842; |
| constexpr int kLetterPortraitPageWidth = 612; |
| constexpr int kLetterPortraitPageHeight = 792; |
| |
| // Changing these values requires changing the names generated in |
| // EnsureUkmTimeAggregator(). |
| enum class UkmMetricNames { |
| kCompositing, |
| kIntersectionObservation, |
| kPaint, |
| kPrePaint, |
| kStyleAndLayout, |
| kCount |
| }; |
| |
| } // namespace |
| |
| // Defines an UMA and a UKM, recorded in microseconds equal to the duration of |
| // the current lexical scope after declaration of the macro. Example usage: |
| // |
| // void LocalFrameView::DoExpensiveThing() { |
| // SCOPED_UMA_AND_UKM_TIMER(UmaName, kUkmEnumName); |
| // // Do computation of expensive thing |
| // |
| // } |
| // |
| // |uma_name| should be the full name of an UMA defined |
| // in histograms.xml. |ukm_enum| should be an entry in UkmMetricNames |
| // (which in turn come from ukm.xml). |
| #define SCOPED_UMA_AND_UKM_TIMER(uma_name, ukm_enum) \ |
| DEFINE_STATIC_LOCAL_IMPL(CustomCountHistogram, scoped_uma_counter, \ |
| (uma_name, 0, 10000000, 50), false); \ |
| auto scoped_ukm_uma_timer = EnsureUkmTimeAggregator().GetScopedTimer( \ |
| static_cast<size_t>(ukm_enum), &scoped_uma_counter); |
| |
| using namespace HTMLNames; |
| |
| // The maximum number of updatePlugins iterations that should be done before |
| // returning. |
| static const unsigned kMaxUpdatePluginsIterations = 2; |
| static const double kResourcePriorityUpdateDelayAfterScroll = 0.250; |
| |
| static bool g_initial_track_all_paint_invalidations = false; |
| |
| LocalFrameView::LocalFrameView(LocalFrame& frame, IntRect frame_rect) |
| : frame_(frame), |
| frame_rect_(frame_rect), |
| is_attached_(false), |
| display_mode_(kWebDisplayModeBrowser), |
| can_have_scrollbars_(true), |
| has_pending_layout_(false), |
| in_synchronous_post_layout_(false), |
| post_layout_tasks_timer_(frame.GetTaskRunner(TaskType::kInternalDefault), |
| this, |
| &LocalFrameView::PostLayoutTimerFired), |
| update_plugins_timer_(frame.GetTaskRunner(TaskType::kInternalDefault), |
| this, |
| &LocalFrameView::UpdatePluginsTimerFired), |
| base_background_color_(Color::kWhite), |
| media_type_(MediaTypeNames::screen), |
| safe_to_propagate_scroll_to_parent_(true), |
| scroll_corner_(nullptr), |
| sticky_position_object_count_(0), |
| input_events_scale_factor_for_emulation_(1), |
| layout_size_fixed_to_frame_size_(true), |
| did_scroll_timer_(frame.GetTaskRunner(TaskType::kInternalDefault), |
| this, |
| &LocalFrameView::DidScrollTimerFired), |
| needs_update_geometries_(false), |
| horizontal_scrollbar_mode_(kScrollbarAuto), |
| vertical_scrollbar_mode_(kScrollbarAuto), |
| scrollbars_suppressed_(false), |
| root_layer_did_scroll_(false), |
| in_update_scrollbars_(false), |
| frame_timing_requests_dirty_(true), |
| hidden_for_throttling_(false), |
| subtree_throttled_(false), |
| lifecycle_updates_throttled_(false), |
| needs_paint_property_update_(true), |
| current_update_lifecycle_phases_target_state_( |
| DocumentLifecycle::kUninitialized), |
| past_layout_lifecycle_update_(false), |
| scroll_anchor_(this), |
| scrollbar_manager_(*this), |
| needs_scrollbars_update_(false), |
| suppress_adjust_view_size_(false), |
| allows_layout_invalidation_after_layout_clean_(true), |
| needs_intersection_observation_(false), |
| needs_forced_compositing_update_(false), |
| needs_focus_on_fragment_(false), |
| main_thread_scrolling_reasons_(0), |
| paint_frame_count_(0), |
| unique_id_(NewUniqueObjectId()) { |
| Init(); |
| } |
| |
| LocalFrameView* LocalFrameView::Create(LocalFrame& frame) { |
| LocalFrameView* view = new LocalFrameView(frame, IntRect()); |
| view->Show(); |
| return view; |
| } |
| |
| LocalFrameView* LocalFrameView::Create(LocalFrame& frame, |
| const IntSize& initial_size) { |
| LocalFrameView* view = |
| new LocalFrameView(frame, IntRect(IntPoint(), initial_size)); |
| view->SetLayoutSizeInternal(initial_size); |
| |
| view->Show(); |
| return view; |
| } |
| |
| LocalFrameView::~LocalFrameView() { |
| #if DCHECK_IS_ON() |
| DCHECK(has_been_disposed_); |
| #endif |
| } |
| |
| void LocalFrameView::Trace(blink::Visitor* visitor) { |
| visitor->Trace(frame_); |
| visitor->Trace(parent_); |
| visitor->Trace(fragment_anchor_); |
| visitor->Trace(scrollable_areas_); |
| visitor->Trace(animating_scrollable_areas_); |
| visitor->Trace(auto_size_info_); |
| visitor->Trace(plugins_); |
| visitor->Trace(scrollbars_); |
| visitor->Trace(viewport_scrollable_area_); |
| visitor->Trace(visibility_observer_); |
| visitor->Trace(scroll_anchor_); |
| visitor->Trace(anchoring_adjustment_queue_); |
| visitor->Trace(scrollbar_manager_); |
| visitor->Trace(print_context_); |
| ScrollableArea::Trace(visitor); |
| } |
| |
| void LocalFrameView::Reset() { |
| // The compositor throttles the main frame using deferred commits, we can't |
| // throttle it here or it seems the root compositor doesn't get setup |
| // properly. |
| if (RuntimeEnabledFeatures:: |
| RenderingPipelineThrottlingLoadingIframesEnabled()) |
| lifecycle_updates_throttled_ = !GetFrame().IsMainFrame(); |
| has_pending_layout_ = false; |
| layout_scheduling_enabled_ = true; |
| in_synchronous_post_layout_ = false; |
| layout_count_ = 0; |
| nested_layout_count_ = 0; |
| post_layout_tasks_timer_.Stop(); |
| update_plugins_timer_.Stop(); |
| first_layout_ = true; |
| safe_to_propagate_scroll_to_parent_ = true; |
| last_viewport_size_ = IntSize(); |
| last_zoom_factor_ = 1.0f; |
| tracked_object_paint_invalidations_ = |
| base::WrapUnique(g_initial_track_all_paint_invalidations |
| ? new Vector<ObjectPaintInvalidation> |
| : nullptr); |
| visually_non_empty_character_count_ = 0; |
| visually_non_empty_pixel_count_ = 0; |
| is_visually_non_empty_ = false; |
| main_thread_scrolling_reasons_ = 0; |
| layout_object_counter_.Reset(); |
| ClearFragmentAnchor(); |
| viewport_constrained_objects_.reset(); |
| layout_subtree_root_list_.Clear(); |
| orthogonal_writing_mode_root_list_.Clear(); |
| ukm_time_aggregator_.reset(); |
| } |
| |
| template <typename Function> |
| void LocalFrameView::ForAllChildViewsAndPlugins(const Function& function) { |
| for (Frame* child = frame_->Tree().FirstChild(); child; |
| child = child->Tree().NextSibling()) { |
| if (child->View()) |
| function(*child->View()); |
| } |
| |
| for (const auto& plugin : plugins_) { |
| function(*plugin); |
| } |
| } |
| |
| template <typename Function> |
| void LocalFrameView::ForAllChildLocalFrameViews(const Function& function) { |
| for (Frame* child = frame_->Tree().FirstChild(); child; |
| child = child->Tree().NextSibling()) { |
| if (!child->IsLocalFrame()) |
| continue; |
| if (LocalFrameView* child_view = ToLocalFrame(child)->View()) |
| function(*child_view); |
| } |
| } |
| |
| // Call function for each non-throttled frame view in pre tree order. |
| template <typename Function> |
| void LocalFrameView::ForAllNonThrottledLocalFrameViews( |
| const Function& function) { |
| if (ShouldThrottleRendering()) |
| return; |
| |
| function(*this); |
| |
| for (Frame* child = frame_->Tree().FirstChild(); child; |
| child = child->Tree().NextSibling()) { |
| if (!child->IsLocalFrame()) |
| continue; |
| if (LocalFrameView* child_view = ToLocalFrame(child)->View()) |
| child_view->ForAllNonThrottledLocalFrameViews(function); |
| } |
| } |
| |
| void LocalFrameView::Init() { |
| Reset(); |
| |
| size_ = LayoutSize(); |
| |
| // Propagate the marginwidth/height and scrolling modes to the view. |
| if (frame_->Owner() && |
| frame_->Owner()->ScrollingMode() == kScrollbarAlwaysOff) |
| SetCanHaveScrollbars(false); |
| } |
| |
| void LocalFrameView::SetupRenderThrottling() { |
| if (visibility_observer_) |
| return; |
| |
| // We observe the frame owner element instead of the document element, because |
| // if the document has no content we can falsely think the frame is invisible. |
| // Note that this means we cannot throttle top-level frames or (currently) |
| // frames whose owner element is remote. |
| Element* target_element = GetFrame().DeprecatedLocalOwner(); |
| if (!target_element) |
| return; |
| |
| visibility_observer_ = new ElementVisibilityObserver( |
| target_element, WTF::BindRepeating( |
| [](LocalFrameView* frame_view, bool is_visible) { |
| if (!frame_view) |
| return; |
| frame_view->UpdateRenderThrottlingStatus( |
| !is_visible, frame_view->subtree_throttled_); |
| }, |
| WrapWeakPersistent(this))); |
| visibility_observer_->Start(); |
| } |
| |
| void LocalFrameView::Dispose() { |
| CHECK(!IsInPerformLayout()); |
| |
| if (ScrollAnimatorBase* scroll_animator = ExistingScrollAnimator()) |
| scroll_animator->CancelAnimation(); |
| CancelProgrammaticScrollAnimation(); |
| |
| DetachScrollbars(); |
| |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) |
| scrolling_coordinator->WillDestroyScrollableArea(this); |
| |
| Page* page = frame_->GetPage(); |
| // TODO(dcheng): It's wrong that the frame can be detached before the |
| // LocalFrameView. Figure out what's going on and fix LocalFrameView to be |
| // disposed with the correct timing. |
| if (page) |
| page->GlobalRootScrollerController().DidDisposeScrollableArea(*this); |
| |
| // We need to clear the RootFrameViewport's animator since it gets called |
| // from non-GC'd objects and RootFrameViewport will still have a pointer to |
| // this class. |
| if (viewport_scrollable_area_) |
| viewport_scrollable_area_->ClearScrollableArea(); |
| |
| ClearScrollableArea(); |
| |
| // Destroy |m_autoSizeInfo| as early as possible, to avoid dereferencing |
| // partially destroyed |this| via |m_autoSizeInfo->m_frameView|. |
| auto_size_info_.Clear(); |
| |
| post_layout_tasks_timer_.Stop(); |
| did_scroll_timer_.Stop(); |
| |
| // FIXME: Do we need to do something here for OOPI? |
| HTMLFrameOwnerElement* owner_element = frame_->DeprecatedLocalOwner(); |
| // TODO(dcheng): It seems buggy that we can have an owner element that points |
| // to another EmbeddedContentView. This can happen when a plugin element loads |
| // a frame (EmbeddedContentView A of type LocalFrameView) and then loads a |
| // plugin (EmbeddedContentView B of type WebPluginContainerImpl). In this |
| // case, the frame's view is A and the frame element's |
| // OwnedEmbeddedContentView is B. See https://crbug.com/673170 for an example. |
| if (owner_element && owner_element->OwnedEmbeddedContentView() == this) |
| owner_element->SetEmbeddedContentView(nullptr); |
| |
| ClearPrintContext(); |
| |
| ukm_time_aggregator_.reset(); |
| |
| #if DCHECK_IS_ON() |
| has_been_disposed_ = true; |
| #endif |
| } |
| |
| void LocalFrameView::DetachScrollbars() { |
| // Previously, we detached custom scrollbars as early as possible to prevent |
| // Document::detachLayoutTree() from messing with the view such that its |
| // scroll bars won't be torn down. However, scripting in |
| // Document::detachLayoutTree() is forbidden |
| // now, so it's not clear if these edge cases can still happen. |
| // However, for Oilpan, we still need to remove the native scrollbars before |
| // we lose the connection to the ChromeClient, so we just unconditionally |
| // detach any scrollbars now. |
| scrollbar_manager_.Dispose(); |
| |
| if (scroll_corner_) { |
| scroll_corner_->Destroy(); |
| scroll_corner_ = nullptr; |
| } |
| } |
| |
| void LocalFrameView::ScrollbarManager::SetHasHorizontalScrollbar( |
| bool has_scrollbar) { |
| if (has_scrollbar == HasHorizontalScrollbar()) |
| return; |
| |
| if (has_scrollbar) { |
| h_bar_ = CreateScrollbar(kHorizontalScrollbar); |
| h_bar_is_attached_ = 1; |
| scrollable_area_->DidAddScrollbar(*h_bar_, kHorizontalScrollbar); |
| h_bar_->StyleChanged(); |
| } else { |
| h_bar_is_attached_ = 0; |
| DestroyScrollbar(kHorizontalScrollbar); |
| } |
| |
| scrollable_area_->SetScrollCornerNeedsPaintInvalidation(); |
| } |
| |
| void LocalFrameView::ScrollbarManager::SetHasVerticalScrollbar( |
| bool has_scrollbar) { |
| if (has_scrollbar == HasVerticalScrollbar()) |
| return; |
| |
| if (has_scrollbar) { |
| v_bar_ = CreateScrollbar(kVerticalScrollbar); |
| v_bar_is_attached_ = 1; |
| scrollable_area_->DidAddScrollbar(*v_bar_, kVerticalScrollbar); |
| v_bar_->StyleChanged(); |
| } else { |
| v_bar_is_attached_ = 0; |
| DestroyScrollbar(kVerticalScrollbar); |
| } |
| |
| scrollable_area_->SetScrollCornerNeedsPaintInvalidation(); |
| } |
| |
| Scrollbar* LocalFrameView::ScrollbarManager::CreateScrollbar( |
| ScrollbarOrientation orientation) { |
| Element* custom_scrollbar_element = nullptr; |
| LayoutBox* box = scrollable_area_->GetLayoutBox(); |
| if (box->GetDocument().View()->ShouldUseCustomScrollbars( |
| custom_scrollbar_element)) { |
| return LayoutScrollbar::CreateCustomScrollbar( |
| scrollable_area_.Get(), orientation, custom_scrollbar_element); |
| } |
| |
| // Nobody set a custom style, so we just use a native scrollbar. |
| return Scrollbar::Create(scrollable_area_.Get(), orientation, |
| kRegularScrollbar, |
| &box->GetFrame()->GetPage()->GetChromeClient()); |
| } |
| |
| void LocalFrameView::SnapAfterScrollbarDragging( |
| ScrollbarOrientation orientation) { |
| SnapCoordinator* snap_coordinator = |
| frame_->GetDocument()->GetSnapCoordinator(); |
| if (!snap_coordinator) |
| return; |
| snap_coordinator->PerformSnapping(*GetLayoutBox(), |
| orientation == kHorizontalScrollbar, |
| orientation == kVerticalScrollbar); |
| } |
| |
| void LocalFrameView::ScrollbarManager::DestroyScrollbar( |
| ScrollbarOrientation orientation) { |
| Member<Scrollbar>& scrollbar = |
| orientation == kHorizontalScrollbar ? h_bar_ : v_bar_; |
| DCHECK(orientation == kHorizontalScrollbar ? !h_bar_is_attached_ |
| : !v_bar_is_attached_); |
| if (!scrollbar) |
| return; |
| |
| scrollable_area_->WillRemoveScrollbar(*scrollbar, orientation); |
| scrollbar->DisconnectFromScrollableArea(); |
| scrollbar = nullptr; |
| } |
| |
| void LocalFrameView::RecalculateCustomScrollbarStyle() { |
| bool did_style_change = false; |
| if (HorizontalScrollbar() && HorizontalScrollbar()->IsCustomScrollbar()) { |
| HorizontalScrollbar()->StyleChanged(); |
| did_style_change = true; |
| } |
| if (VerticalScrollbar() && VerticalScrollbar()->IsCustomScrollbar()) { |
| VerticalScrollbar()->StyleChanged(); |
| did_style_change = true; |
| } |
| if (did_style_change) { |
| UpdateScrollbarGeometry(); |
| UpdateScrollCorner(); |
| PositionScrollbarLayers(); |
| } |
| } |
| |
| void LocalFrameView::InvalidateAllCustomScrollbarsOnActiveChanged() { |
| bool uses_window_inactive_selector = |
| frame_->GetDocument()->GetStyleEngine().UsesWindowInactiveSelector(); |
| |
| ForAllChildLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.InvalidateAllCustomScrollbarsOnActiveChanged(); |
| }); |
| |
| for (const auto& scrollbar : scrollbars_) { |
| if (uses_window_inactive_selector && scrollbar->IsCustomScrollbar()) |
| scrollbar->StyleChanged(); |
| } |
| |
| if (uses_window_inactive_selector) |
| RecalculateCustomScrollbarStyle(); |
| } |
| |
| bool LocalFrameView::DidFirstLayout() const { |
| return !first_layout_; |
| } |
| |
| bool LocalFrameView::LifecycleUpdatesActive() const { |
| return !lifecycle_updates_throttled_; |
| } |
| |
| void LocalFrameView::InvalidateRect(const IntRect& rect) { |
| auto* layout_object = frame_->OwnerLayoutObject(); |
| if (!layout_object) |
| return; |
| |
| IntRect paint_invalidation_rect = rect; |
| paint_invalidation_rect.Move( |
| (layout_object->BorderLeft() + layout_object->PaddingLeft()).ToInt(), |
| (layout_object->BorderTop() + layout_object->PaddingTop()).ToInt()); |
| layout_object->InvalidatePaintRectangle(LayoutRect(paint_invalidation_rect)); |
| } |
| |
| void LocalFrameView::SetFrameRect(const IntRect& frame_rect) { |
| if (frame_rect == frame_rect_) |
| return; |
| const bool width_changed = frame_rect_.Width() != frame_rect.Width(); |
| const bool height_changed = frame_rect_.Height() != frame_rect.Height(); |
| frame_rect_ = frame_rect; |
| |
| needs_scrollbars_update_ |= width_changed || height_changed; |
| |
| FrameRectsChanged(); |
| |
| UpdateParentScrollableAreaSet(); |
| |
| if (!RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| // The overflow clip property depends on the frame size and the pre |
| // translation property depends on the frame location. |
| SetNeedsPaintPropertyUpdate(); |
| } |
| |
| if (auto* layout_view = GetLayoutView()) |
| layout_view->SetMayNeedPaintInvalidation(); |
| |
| if (width_changed || height_changed) { |
| ViewportSizeChanged(width_changed, height_changed); |
| |
| if (frame_->IsMainFrame()) |
| frame_->GetPage()->GetVisualViewport().MainFrameDidChangeSize(); |
| |
| GetFrame().Loader().RestoreScrollPositionAndViewState(); |
| } |
| } |
| |
| IntPoint LocalFrameView::Location() const { |
| IntPoint location(frame_rect_.Location()); |
| |
| // As an optimization, we don't include the root layer's scroll offset in the |
| // frame rect. As a result, we don't need to recalculate the frame rect every |
| // time the root layer scrolls, but we need to add it in here. |
| LayoutEmbeddedContent* owner = frame_->OwnerLayoutObject(); |
| if (owner) { |
| LayoutView* owner_layout_view = owner->View(); |
| DCHECK(owner_layout_view); |
| if (owner_layout_view->HasOverflowClip()) { |
| IntSize scroll_offset(owner_layout_view->ScrolledContentOffset()); |
| location.SaturatedMove(-scroll_offset.Width(), -scroll_offset.Height()); |
| } |
| } |
| return location; |
| } |
| |
| Page* LocalFrameView::GetPage() const { |
| return GetFrame().GetPage(); |
| } |
| |
| LayoutView* LocalFrameView::GetLayoutView() const { |
| return GetFrame().ContentLayoutObject(); |
| } |
| |
| ScrollingCoordinator* LocalFrameView::GetScrollingCoordinator() const { |
| Page* p = GetPage(); |
| return p ? p->GetScrollingCoordinator() : nullptr; |
| } |
| |
| ScrollingCoordinatorContext* LocalFrameView::GetScrollingContext() const { |
| LocalFrame* root = &GetFrame().LocalFrameRoot(); |
| if (GetFrame() != root) |
| return root->View()->GetScrollingContext(); |
| |
| if (!scrolling_context_) |
| scrolling_context_.reset(new ScrollingCoordinatorContext()); |
| return scrolling_context_.get(); |
| } |
| |
| CompositorAnimationHost* LocalFrameView::GetCompositorAnimationHost() const { |
| if (GetScrollingContext()->GetCompositorAnimationHost()) |
| return GetScrollingContext()->GetCompositorAnimationHost(); |
| |
| if (!GetFrame().LocalFrameRoot().IsMainFrame()) |
| return nullptr; |
| |
| // TODO(kenrb): Compositor animation host and timeline for the main frame |
| // still live on ScrollingCoordinator. https://crbug.com/680606. |
| ScrollingCoordinator* c = GetScrollingCoordinator(); |
| return c ? c->GetCompositorAnimationHost() : nullptr; |
| } |
| |
| CompositorAnimationTimeline* LocalFrameView::GetCompositorAnimationTimeline() |
| const { |
| if (GetScrollingContext()->GetCompositorAnimationTimeline()) |
| return GetScrollingContext()->GetCompositorAnimationTimeline(); |
| |
| if (!GetFrame().LocalFrameRoot().IsMainFrame()) |
| return nullptr; |
| |
| // TODO(kenrb): Compositor animation host and timeline for the main frame |
| // still live on ScrollingCoordinator. https://crbug.com/680606. |
| ScrollingCoordinator* c = GetScrollingCoordinator(); |
| return c ? c->GetCompositorAnimationTimeline() : nullptr; |
| } |
| |
| LayoutBox* LocalFrameView::GetLayoutBox() const { |
| return GetLayoutView(); |
| } |
| |
| FloatQuad LocalFrameView::LocalToVisibleContentQuad( |
| const FloatQuad& quad, |
| const LayoutObject* local_object, |
| MapCoordinatesFlags flags) const { |
| LayoutBox* box = GetLayoutBox(); |
| if (!box) |
| return quad; |
| DCHECK(local_object); |
| FloatQuad result = local_object->LocalToAncestorQuad(quad, box, flags); |
| result.Move(-GetScrollOffset()); |
| return result; |
| } |
| |
| scoped_refptr<base::SingleThreadTaskRunner> LocalFrameView::GetTimerTaskRunner() |
| const { |
| return frame_->GetTaskRunner(TaskType::kInternalDefault); |
| } |
| |
| void LocalFrameView::SetCanHaveScrollbars(bool can_have_scrollbars) { |
| can_have_scrollbars_ = can_have_scrollbars; |
| |
| ScrollbarMode new_vertical_mode = EffectiveVerticalScrollbarMode(); |
| if (can_have_scrollbars && new_vertical_mode == kScrollbarAlwaysOff) |
| new_vertical_mode = kScrollbarAuto; |
| else if (!can_have_scrollbars) |
| new_vertical_mode = kScrollbarAlwaysOff; |
| |
| ScrollbarMode new_horizontal_mode = EffectiveHorizontalScrollbarMode(); |
| if (can_have_scrollbars && new_horizontal_mode == kScrollbarAlwaysOff) |
| new_horizontal_mode = kScrollbarAuto; |
| else if (!can_have_scrollbars) |
| new_horizontal_mode = kScrollbarAlwaysOff; |
| |
| SetScrollbarModes(new_horizontal_mode, new_vertical_mode); |
| } |
| |
| bool LocalFrameView::ShouldUseCustomScrollbars( |
| Element*& custom_scrollbar_element) const { |
| custom_scrollbar_element = nullptr; |
| |
| if (Settings* settings = frame_->GetSettings()) { |
| if (!settings->GetAllowCustomScrollbarInMainFrame() && |
| frame_->IsMainFrame()) |
| return false; |
| } |
| Document* doc = frame_->GetDocument(); |
| |
| // Try the <body> element first as a scrollbar source. |
| Element* body = doc ? doc->body() : nullptr; |
| if (body && body->GetLayoutObject() && |
| body->GetLayoutObject()->Style()->HasPseudoStyle(kPseudoIdScrollbar)) { |
| custom_scrollbar_element = body; |
| return true; |
| } |
| |
| // If the <body> didn't have a custom style, then the root element might. |
| Element* doc_element = doc ? doc->documentElement() : nullptr; |
| if (doc_element && doc_element->GetLayoutObject() && |
| doc_element->GetLayoutObject()->Style()->HasPseudoStyle( |
| kPseudoIdScrollbar)) { |
| custom_scrollbar_element = doc_element; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| Scrollbar* LocalFrameView::CreateScrollbar(ScrollbarOrientation orientation) { |
| return scrollbar_manager_.CreateScrollbar(orientation); |
| } |
| |
| void LocalFrameView::SetLayoutOverflowSize(const IntSize& size) { |
| if (size == layout_overflow_size_) |
| return; |
| |
| layout_overflow_size_ = size; |
| needs_scrollbars_update_ = true; |
| ScrollableArea::ContentsResized(); |
| |
| Page* page = GetFrame().GetPage(); |
| if (!page) |
| return; |
| |
| page->GetChromeClient().ContentsSizeChanged(frame_.Get(), size); |
| } |
| |
| void LocalFrameView::AdjustViewSize() { |
| if (suppress_adjust_view_size_) |
| return; |
| |
| LayoutView* layout_view = GetLayoutView(); |
| if (!layout_view) |
| return; |
| |
| DCHECK_EQ(frame_->View(), this); |
| |
| const IntRect rect = layout_view->DocumentRect(); |
| const IntSize& size = rect.Size(); |
| |
| if (!RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| const IntPoint origin(-rect.X(), -rect.Y()); |
| if (ScrollOrigin() != origin) |
| SetScrollOrigin(origin); |
| } |
| |
| SetLayoutOverflowSize(size); |
| } |
| |
| void LocalFrameView::AdjustViewSizeAndLayout() { |
| AdjustViewSize(); |
| if (NeedsLayout()) { |
| AutoReset<bool> suppress_adjust_view_size(&suppress_adjust_view_size_, |
| true); |
| UpdateLayout(); |
| } |
| } |
| |
| void LocalFrameView::UpdateAcceleratedCompositingSettings() { |
| if (auto* layout_view = GetLayoutView()) |
| layout_view->Compositor()->UpdateAcceleratedCompositingSettings(); |
| } |
| |
| void LocalFrameView::RecalcOverflowAfterStyleChange() { |
| auto* layout_view = this->GetLayoutView(); |
| CHECK(layout_view); |
| if (!layout_view->NeedsOverflowRecalcAfterStyleChange()) |
| return; |
| |
| layout_view->RecalcOverflowAfterStyleChange(); |
| |
| // Changing overflow should notify scrolling coordinator to ensures that it |
| // updates non-fast scroll rects even if there is no layout. |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) { |
| GetScrollingContext()->SetScrollGestureRegionIsDirty(true); |
| } |
| |
| IntRect document_rect = layout_view->DocumentRect(); |
| if (ScrollOrigin() == -document_rect.Location() && |
| ContentsSize() == document_rect.Size()) |
| return; |
| |
| if (NeedsLayout()) |
| return; |
| |
| // If the visualViewport supplies scrollbars, we won't get a paint |
| // invalidation from computeScrollbarExistence so we need to force one. |
| if (VisualViewportSuppliesScrollbars()) |
| layout_view->SetMayNeedPaintInvalidation(); |
| |
| // TODO(pdr): This should be refactored to just block scrollbar updates as |
| // we are not in a scrollbar update here and m_inUpdateScrollbars has other |
| // side effects. This scope is only for preventing a synchronous layout from |
| // scroll origin changes which would not be allowed during style recalc. |
| InUpdateScrollbarsScope in_update_scrollbars_scope(this); |
| |
| bool should_have_horizontal_scrollbar = false; |
| bool should_have_vertical_scrollbar = false; |
| ComputeScrollbarExistence(should_have_horizontal_scrollbar, |
| should_have_vertical_scrollbar, |
| document_rect.Size()); |
| |
| bool has_horizontal_scrollbar = HorizontalScrollbar(); |
| bool has_vertical_scrollbar = VerticalScrollbar(); |
| if (has_horizontal_scrollbar != should_have_horizontal_scrollbar || |
| has_vertical_scrollbar != should_have_vertical_scrollbar) { |
| SetNeedsLayout(); |
| return; |
| } |
| |
| AdjustViewSize(); |
| UpdateScrollbarGeometry(); |
| SetNeedsPaintPropertyUpdate(); |
| |
| if (ScrollOriginChanged()) |
| SetNeedsLayout(); |
| } |
| |
| void LocalFrameView::UpdateCountersAfterStyleChange() { |
| auto* layout_view = GetLayoutView(); |
| DCHECK(layout_view); |
| layout_view->UpdateCounters(); |
| } |
| |
| bool LocalFrameView::ShouldScrollOnMainThread() const { |
| if (GetMainThreadScrollingReasons()) |
| return true; |
| return ScrollableArea::ShouldScrollOnMainThread(); |
| } |
| |
| GraphicsLayer* LocalFrameView::LayerForScrolling() const { |
| auto* layout_view = GetLayoutView(); |
| if (!layout_view) |
| return nullptr; |
| return layout_view->Compositor()->FrameScrollLayer(); |
| } |
| |
| GraphicsLayer* LocalFrameView::LayerForHorizontalScrollbar() const { |
| auto* layout_view = GetLayoutView(); |
| if (!layout_view) |
| return nullptr; |
| return layout_view->Compositor()->LayerForHorizontalScrollbar(); |
| } |
| |
| GraphicsLayer* LocalFrameView::LayerForVerticalScrollbar() const { |
| auto* layout_view = GetLayoutView(); |
| if (!layout_view) |
| return nullptr; |
| return layout_view->Compositor()->LayerForVerticalScrollbar(); |
| } |
| |
| GraphicsLayer* LocalFrameView::LayerForScrollCorner() const { |
| auto* layout_view = GetLayoutView(); |
| if (!layout_view) |
| return nullptr; |
| return layout_view->Compositor()->LayerForScrollCorner(); |
| } |
| |
| bool LocalFrameView::IsEnclosedInCompositingLayer() const { |
| // FIXME: It's a bug that compositing state isn't always up to date when this |
| // is called. crbug.com/366314 |
| DisableCompositingQueryAsserts disabler; |
| |
| auto* frame_owner_layout_object = frame_->OwnerLayoutObject(); |
| return frame_owner_layout_object && |
| frame_owner_layout_object->EnclosingLayer() |
| ->EnclosingLayerForPaintInvalidationCrossingFrameBoundaries(); |
| } |
| |
| void LocalFrameView::CountObjectsNeedingLayout(unsigned& needs_layout_objects, |
| unsigned& total_objects, |
| bool& is_subtree) { |
| needs_layout_objects = 0; |
| total_objects = 0; |
| is_subtree = IsSubtreeLayout(); |
| if (is_subtree) { |
| layout_subtree_root_list_.CountObjectsNeedingLayout(needs_layout_objects, |
| total_objects); |
| } else { |
| LayoutSubtreeRootList::CountObjectsNeedingLayoutInRoot( |
| GetLayoutView(), needs_layout_objects, total_objects); |
| } |
| } |
| |
| void LocalFrameView::PerformPreLayoutTasks() { |
| TRACE_EVENT0("blink,benchmark", "LocalFrameView::performPreLayoutTasks"); |
| Lifecycle().AdvanceTo(DocumentLifecycle::kInPreLayout); |
| |
| // Don't schedule more layouts, we're in one. |
| AutoReset<bool> change_scheduling_enabled(&layout_scheduling_enabled_, false); |
| |
| if (!nested_layout_count_ && !in_synchronous_post_layout_ && |
| post_layout_tasks_timer_.IsActive()) { |
| // This is a new top-level layout. If there are any remaining tasks from the |
| // previous layout, finish them now. |
| in_synchronous_post_layout_ = true; |
| PerformPostLayoutTasks(); |
| in_synchronous_post_layout_ = false; |
| } |
| |
| bool was_resized = WasViewportResized(); |
| Document* document = frame_->GetDocument(); |
| if (was_resized) |
| document->SetResizedForViewportUnits(); |
| |
| // Viewport-dependent or device-dependent media queries may cause us to need |
| // completely different style information. |
| bool main_frame_rotation = |
| frame_->IsMainFrame() && frame_->GetSettings() && |
| frame_->GetSettings()->GetMainFrameResizesAreOrientationChanges(); |
| if ((was_resized && |
| document->GetStyleEngine().MediaQueryAffectedByViewportChange()) || |
| (was_resized && main_frame_rotation && |
| document->GetStyleEngine().MediaQueryAffectedByDeviceChange())) { |
| document->MediaQueryAffectingValueChanged(); |
| } else if (was_resized) { |
| document->EvaluateMediaQueryList(); |
| } |
| |
| document->UpdateStyleAndLayoutTree(); |
| Lifecycle().AdvanceTo(DocumentLifecycle::kStyleClean); |
| |
| if (was_resized) |
| document->ClearResizedForViewportUnits(); |
| |
| if (ShouldPerformScrollAnchoring()) |
| scroll_anchor_.NotifyBeforeLayout(); |
| } |
| |
| bool LocalFrameView::ShouldPerformScrollAnchoring() const { |
| return RuntimeEnabledFeatures::ScrollAnchoringEnabled() && |
| !RuntimeEnabledFeatures::RootLayerScrollingEnabled() && |
| scroll_anchor_.HasScroller() && GetLayoutBox() && |
| GetLayoutBox()->Style()->OverflowAnchor() != EOverflowAnchor::kNone && |
| !frame_->GetDocument()->FinishingOrIsPrinting(); |
| } |
| |
| void LocalFrameView::LayoutFromRootObject(LayoutObject& root) { |
| LayoutState layout_state(root); |
| if (!root.IsBoxModelObject()) { |
| root.UpdateLayout(); |
| } else { |
| // Laying out the root may change its visual overflow. If so, that |
| // visual overflow needs to propagate to its containing block. |
| LayoutBoxModelObject& box_object = ToLayoutBoxModelObject(root); |
| LayoutRect previous_visual_overflow_rect = box_object.VisualOverflowRect(); |
| box_object.UpdateLayout(); |
| if (box_object.VisualOverflowRect() != previous_visual_overflow_rect) { |
| box_object.SetNeedsOverflowRecalcAfterStyleChange(); |
| RecalcOverflowAfterStyleChange(); |
| } |
| } |
| } |
| |
| void LocalFrameView::PrepareLayoutAnalyzer() { |
| bool is_tracing = false; |
| TRACE_EVENT_CATEGORY_GROUP_ENABLED( |
| TRACE_DISABLED_BY_DEFAULT("blink.debug.layout"), &is_tracing); |
| if (!is_tracing) { |
| analyzer_.reset(); |
| return; |
| } |
| if (!analyzer_) |
| analyzer_ = std::make_unique<LayoutAnalyzer>(); |
| analyzer_->Reset(); |
| } |
| |
| std::unique_ptr<TracedValue> LocalFrameView::AnalyzerCounters() { |
| if (!analyzer_) |
| return TracedValue::Create(); |
| std::unique_ptr<TracedValue> value = analyzer_->ToTracedValue(); |
| value->SetString("host", GetLayoutView()->GetDocument().location()->host()); |
| value->SetString( |
| "frame", |
| String::Format("0x%" PRIxPTR, reinterpret_cast<uintptr_t>(frame_.Get()))); |
| value->SetInteger("contentsHeightAfterLayout", |
| GetLayoutView()->DocumentRect().Height()); |
| value->SetInteger("visibleHeight", VisibleHeight()); |
| value->SetInteger("approximateBlankCharacterCount", |
| FontFaceSetDocument::ApproximateBlankCharacterCount( |
| *frame_->GetDocument())); |
| return value; |
| } |
| |
| #define PERFORM_LAYOUT_TRACE_CATEGORIES \ |
| "blink,benchmark,rail," TRACE_DISABLED_BY_DEFAULT("blink.debug.layout") |
| |
| void LocalFrameView::PerformLayout(bool in_subtree_layout) { |
| DCHECK(in_subtree_layout || layout_subtree_root_list_.IsEmpty()); |
| |
| int contents_height_before_layout = GetLayoutView()->DocumentRect().Height(); |
| TRACE_EVENT_BEGIN1( |
| PERFORM_LAYOUT_TRACE_CATEGORIES, "LocalFrameView::performLayout", |
| "contentsHeightBeforeLayout", contents_height_before_layout); |
| PrepareLayoutAnalyzer(); |
| |
| ScriptForbiddenScope forbid_script; |
| |
| if (in_subtree_layout && HasOrthogonalWritingModeRoots()) { |
| // If we're going to lay out from each subtree root, rather than once from |
| // LayoutView, we need to merge the depth-ordered orthogonal writing mode |
| // root list into the depth-ordered list of subtrees scheduled for |
| // layout. Otherwise, during layout of one such subtree, we'd risk skipping |
| // over a subtree of objects needing layout. |
| DCHECK(!layout_subtree_root_list_.IsEmpty()); |
| ScheduleOrthogonalWritingModeRootsForLayout(); |
| } |
| |
| DCHECK(!IsInPerformLayout()); |
| Lifecycle().AdvanceTo(DocumentLifecycle::kInPerformLayout); |
| |
| // performLayout is the actual guts of layout(). |
| // FIXME: The 300 other lines in layout() probably belong in other helper |
| // functions so that a single human could understand what layout() is actually |
| // doing. |
| |
| { |
| // TODO(szager): Remove this after diagnosing crash. |
| DocumentLifecycle::CheckNoTransitionScope check_no_transition(Lifecycle()); |
| if (in_subtree_layout) { |
| if (analyzer_) { |
| analyzer_->Increment(LayoutAnalyzer::kPerformLayoutRootLayoutObjects, |
| layout_subtree_root_list_.size()); |
| } |
| for (auto& root : layout_subtree_root_list_.Ordered()) { |
| if (!root->NeedsLayout()) |
| continue; |
| LayoutFromRootObject(*root); |
| |
| // We need to ensure that we mark up all layoutObjects up to the |
| // LayoutView for paint invalidation. This simplifies our code as we |
| // just always do a full tree walk. |
| if (LayoutObject* container = root->Container()) |
| container->SetMayNeedPaintInvalidation(); |
| } |
| layout_subtree_root_list_.Clear(); |
| } else { |
| if (HasOrthogonalWritingModeRoots() && |
| !RuntimeEnabledFeatures::LayoutNGEnabled()) |
| LayoutOrthogonalWritingModeRoots(); |
| GetLayoutView()->UpdateLayout(); |
| } |
| } |
| |
| frame_->GetDocument()->Fetcher()->UpdateAllImageResourcePriorities(); |
| |
| Lifecycle().AdvanceTo(DocumentLifecycle::kAfterPerformLayout); |
| |
| TRACE_EVENT_END1(PERFORM_LAYOUT_TRACE_CATEGORIES, |
| "LocalFrameView::performLayout", "counters", |
| AnalyzerCounters()); |
| FirstMeaningfulPaintDetector::From(*frame_->GetDocument()) |
| .MarkNextPaintAsMeaningfulIfNeeded( |
| layout_object_counter_, contents_height_before_layout, |
| GetLayoutView()->DocumentRect().Height(), VisibleHeight()); |
| } |
| |
| void LocalFrameView::ScheduleOrPerformPostLayoutTasks() { |
| if (post_layout_tasks_timer_.IsActive()) |
| return; |
| |
| if (!in_synchronous_post_layout_) { |
| in_synchronous_post_layout_ = true; |
| // Calls resumeScheduledEvents() |
| PerformPostLayoutTasks(); |
| in_synchronous_post_layout_ = false; |
| } |
| |
| if (!post_layout_tasks_timer_.IsActive() && |
| (NeedsLayout() || in_synchronous_post_layout_)) { |
| // If we need layout or are already in a synchronous call to |
| // postLayoutTasks(), defer LocalFrameView updates and event dispatch until |
| // after we return. postLayoutTasks() can make us need to update again, and |
| // we can get stuck in a nasty cycle unless we call it through the timer |
| // here. |
| post_layout_tasks_timer_.StartOneShot(TimeDelta(), FROM_HERE); |
| if (NeedsLayout()) |
| UpdateLayout(); |
| } |
| } |
| |
| void LocalFrameView::UpdateLayout() { |
| // We should never layout a Document which is not in a LocalFrame. |
| DCHECK(frame_); |
| DCHECK_EQ(frame_->View(), this); |
| DCHECK(frame_->GetPage()); |
| |
| { |
| ScriptForbiddenScope forbid_script; |
| |
| if (IsInPerformLayout() || ShouldThrottleRendering() || |
| !frame_->GetDocument()->IsActive()) |
| return; |
| |
| TRACE_EVENT0("blink,benchmark", "LocalFrameView::layout"); |
| |
| RUNTIME_CALL_TIMER_SCOPE(V8PerIsolateData::MainThreadIsolate(), |
| RuntimeCallStats::CounterId::kUpdateLayout); |
| |
| // The actual call to UpdateGeometries is in PerformPostLayoutTasks. |
| SetNeedsUpdateGeometries(); |
| |
| if (auto_size_info_) |
| auto_size_info_->AutoSizeIfNeeded(); |
| |
| has_pending_layout_ = false; |
| |
| Document* document = frame_->GetDocument(); |
| TRACE_EVENT_BEGIN1("devtools.timeline", "Layout", "beginData", |
| InspectorLayoutEvent::BeginData(this)); |
| probe::UpdateLayout probe(document); |
| |
| PerformPreLayoutTasks(); |
| |
| VisualViewport& visual_viewport = frame_->GetPage()->GetVisualViewport(); |
| DoubleSize viewport_size(visual_viewport.VisibleWidthCSSPx(), |
| visual_viewport.VisibleHeightCSSPx()); |
| |
| // TODO(crbug.com/460956): The notion of a single root for layout is no |
| // longer applicable. Remove or update this code. |
| LayoutObject* root_for_this_layout = GetLayoutView(); |
| |
| FontCachePurgePreventer font_cache_purge_preventer; |
| { |
| AutoReset<bool> change_scheduling_enabled(&layout_scheduling_enabled_, |
| false); |
| nested_layout_count_++; |
| |
| // If the layout view was marked as needing layout after we added items in |
| // the subtree roots we need to clear the roots and do the layout from the |
| // layoutView. |
| if (GetLayoutView()->NeedsLayout()) |
| ClearLayoutSubtreeRootsAndMarkContainingBlocks(); |
| GetLayoutView()->ClearHitTestCache(); |
| |
| bool in_subtree_layout = IsSubtreeLayout(); |
| |
| // TODO(crbug.com/460956): The notion of a single root for layout is no |
| // longer applicable. Remove or update this code. |
| if (in_subtree_layout) |
| root_for_this_layout = layout_subtree_root_list_.RandomRoot(); |
| |
| if (!root_for_this_layout) { |
| // FIXME: Do we need to set m_size here? |
| NOTREACHED(); |
| return; |
| } |
| |
| if (!in_subtree_layout) { |
| ClearLayoutSubtreeRootsAndMarkContainingBlocks(); |
| Node* body = document->body(); |
| if (body && body->GetLayoutObject()) { |
| if (IsHTMLFrameSetElement(*body)) { |
| body->GetLayoutObject()->SetChildNeedsLayout(); |
| } else if (IsHTMLBodyElement(*body)) { |
| if (!first_layout_ && size_.Height() != GetLayoutSize().Height() && |
| body->GetLayoutObject()->EnclosingBox()->StretchesToViewport()) |
| body->GetLayoutObject()->SetChildNeedsLayout(); |
| } |
| } |
| |
| ScrollbarMode h_mode; |
| ScrollbarMode v_mode; |
| GetLayoutView()->CalculateScrollbarModes(h_mode, v_mode); |
| |
| // Now set our scrollbar state for the layout. |
| ScrollbarMode current_h_mode = EffectiveHorizontalScrollbarMode(); |
| ScrollbarMode current_v_mode = EffectiveVerticalScrollbarMode(); |
| |
| if (first_layout_) { |
| SetScrollbarsSuppressed(true); |
| |
| first_layout_ = false; |
| last_viewport_size_ = GetLayoutSize(kIncludeScrollbars); |
| last_zoom_factor_ = GetLayoutView()->Style()->Zoom(); |
| |
| // Set the initial vMode to AlwaysOn if we're auto. |
| if (v_mode == kScrollbarAuto) { |
| // This causes a vertical scrollbar to appear. |
| SetVerticalScrollbarMode(kScrollbarAlwaysOn); |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| GetLayoutView() |
| ->GetScrollableArea() |
| ->ForceVerticalScrollbarForFirstLayout(); |
| } |
| } |
| // Set the initial hMode to AlwaysOff if we're auto. |
| if (h_mode == kScrollbarAuto) { |
| // This causes a horizontal scrollbar to disappear. |
| SetHorizontalScrollbarMode(kScrollbarAlwaysOff); |
| } |
| |
| SetScrollbarModes(h_mode, v_mode); |
| SetScrollbarsSuppressed(false); |
| } else if (h_mode != current_h_mode || v_mode != current_v_mode) { |
| SetScrollbarModes(h_mode, v_mode); |
| } |
| |
| UpdateScrollbarsIfNeeded(); |
| |
| LayoutSize old_size = size_; |
| |
| size_ = LayoutSize(GetLayoutSize()); |
| |
| if (old_size != size_ && !first_layout_) { |
| LayoutBox* root_layout_object = |
| document->documentElement() |
| ? document->documentElement()->GetLayoutBox() |
| : nullptr; |
| LayoutBox* body_layout_object = root_layout_object && document->body() |
| ? document->body()->GetLayoutBox() |
| : nullptr; |
| if (body_layout_object && body_layout_object->StretchesToViewport()) |
| body_layout_object->SetChildNeedsLayout(); |
| else if (root_layout_object && |
| root_layout_object->StretchesToViewport()) |
| root_layout_object->SetChildNeedsLayout(); |
| } |
| } |
| |
| TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID( |
| TRACE_DISABLED_BY_DEFAULT("blink.debug.layout.trees"), "LayoutTree", |
| this, TracedLayoutObject::Create(*GetLayoutView(), false)); |
| |
| IntSize old_size(Size()); |
| |
| PerformLayout(in_subtree_layout); |
| |
| UpdateScrollbars(); |
| UpdateParentScrollableAreaSet(); |
| |
| IntSize new_size(Size()); |
| if (old_size != new_size) { |
| needs_scrollbars_update_ = true; |
| SetNeedsLayout(); |
| MarkViewportConstrainedObjectsForLayout( |
| old_size.Width() != new_size.Width(), |
| old_size.Height() != new_size.Height()); |
| } |
| |
| if (NeedsLayout()) { |
| AutoReset<bool> suppress(&suppress_adjust_view_size_, true); |
| UpdateLayout(); |
| } |
| |
| DCHECK(layout_subtree_root_list_.IsEmpty()); |
| } // Reset m_layoutSchedulingEnabled to its previous value. |
| CheckDoesNotNeedLayout(); |
| |
| DocumentLifecycle::Scope lifecycle_scope(Lifecycle(), |
| DocumentLifecycle::kLayoutClean); |
| |
| frame_timing_requests_dirty_ = true; |
| |
| // FIXME: Could find the common ancestor layer of all dirty subtrees and |
| // mark from there. crbug.com/462719 |
| GetLayoutView()->EnclosingLayer()->UpdateLayerPositionsAfterLayout(); |
| |
| TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID( |
| TRACE_DISABLED_BY_DEFAULT("blink.debug.layout.trees"), "LayoutTree", |
| this, TracedLayoutObject::Create(*GetLayoutView(), true)); |
| |
| GetLayoutView()->Compositor()->DidLayout(); |
| |
| layout_count_++; |
| |
| if (AXObjectCache* cache = document->GetOrCreateAXObjectCache()) { |
| const KURL& url = document->Url(); |
| if (url.IsValid() && !url.IsAboutBlankURL()) |
| cache->HandleLayoutComplete(document); |
| } |
| UpdateDocumentAnnotatedRegions(); |
| CheckDoesNotNeedLayout(); |
| |
| ScheduleOrPerformPostLayoutTasks(); |
| CheckDoesNotNeedLayout(); |
| |
| // FIXME: The notion of a single root for layout is no longer applicable. |
| // Remove or update this code. crbug.com/460596 |
| TRACE_EVENT_END1("devtools.timeline", "Layout", "endData", |
| InspectorLayoutEvent::EndData(root_for_this_layout)); |
| probe::didChangeViewport(frame_.Get()); |
| |
| nested_layout_count_--; |
| if (nested_layout_count_) |
| return; |
| |
| #if DCHECK_IS_ON() |
| // Post-layout assert that nobody was re-marked as needing layout during |
| // layout. |
| GetLayoutView()->AssertSubtreeIsLaidOut(); |
| #endif |
| |
| if (frame_->IsMainFrame() && |
| RuntimeEnabledFeatures::VisualViewportAPIEnabled()) { |
| // Scrollbars changing state can cause a visual viewport size change. |
| DoubleSize new_viewport_size(visual_viewport.VisibleWidthCSSPx(), |
| visual_viewport.VisibleHeightCSSPx()); |
| if (new_viewport_size != viewport_size) |
| frame_->GetDocument()->EnqueueVisualViewportResizeEvent(); |
| } |
| } // ScriptForbiddenScope |
| |
| GetFrame().GetDocument()->LayoutUpdated(); |
| CheckDoesNotNeedLayout(); |
| } |
| |
| void LocalFrameView::SetNeedsPaintPropertyUpdate() { |
| needs_paint_property_update_ = true; |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| if (auto* layout_view = this->GetLayoutView()) { |
| layout_view->SetNeedsPaintPropertyUpdate(); |
| return; |
| } |
| } |
| if (LayoutObject* owner = GetFrame().OwnerLayoutObject()) |
| owner->SetNeedsPaintPropertyUpdate(); |
| } |
| |
| void LocalFrameView::SetSubtreeNeedsPaintPropertyUpdate() { |
| SetNeedsPaintPropertyUpdate(); |
| if (auto* layout_view = GetLayoutView()) |
| layout_view->SetSubtreeNeedsPaintPropertyUpdate(); |
| } |
| |
| FloatSize LocalFrameView::ViewportSizeForViewportUnits() const { |
| float zoom = 1; |
| if (!frame_->GetDocument() || !frame_->GetDocument()->Printing()) |
| zoom = GetFrame().PageZoomFactor(); |
| |
| auto* layout_view = GetLayoutView(); |
| if (!layout_view) |
| return FloatSize(); |
| |
| FloatSize layout_size; |
| layout_size.SetWidth(layout_view->ViewWidth(kIncludeScrollbars) / zoom); |
| layout_size.SetHeight(layout_view->ViewHeight(kIncludeScrollbars) / zoom); |
| |
| BrowserControls& browser_controls = frame_->GetPage()->GetBrowserControls(); |
| if (browser_controls.PermittedState() != kWebBrowserControlsHidden) { |
| // We use the layoutSize rather than frameRect to calculate viewport units |
| // so that we get correct results on mobile where the page is laid out into |
| // a rect that may be larger than the viewport (e.g. the 980px fallback |
| // width for desktop pages). Since the layout height is statically set to |
| // be the viewport with browser controls showing, we add the browser |
| // controls height, compensating for page scale as well, since we want to |
| // use the viewport with browser controls hidden for vh (to match Safari). |
| int viewport_width = frame_->GetPage()->GetVisualViewport().Size().Width(); |
| if (frame_->IsMainFrame() && layout_size.Width() && viewport_width) { |
| // TODO(bokan/eirage): BrowserControl height may need to account for the |
| // zoom factor when use-zoom-for-dsf is enabled on Android. Confirm this |
| // works correctly when that's turned on. https://crbug.com/737777. |
| float page_scale_at_layout_width = viewport_width / layout_size.Width(); |
| layout_size.Expand( |
| 0, browser_controls.TotalHeight() / page_scale_at_layout_width); |
| } |
| } |
| |
| return layout_size; |
| } |
| |
| FloatSize LocalFrameView::ViewportSizeForMediaQueries() const { |
| FloatSize viewport_size(GetLayoutSize(kIncludeScrollbars)); |
| if (!frame_->GetDocument() || !frame_->GetDocument()->Printing()) |
| viewport_size.Scale(1 / GetFrame().PageZoomFactor()); |
| return viewport_size; |
| } |
| |
| DocumentLifecycle& LocalFrameView::Lifecycle() const { |
| DCHECK(frame_); |
| DCHECK(frame_->GetDocument()); |
| return frame_->GetDocument()->Lifecycle(); |
| } |
| |
| LayoutReplaced* LocalFrameView::EmbeddedReplacedContent() const { |
| auto* layout_view = this->GetLayoutView(); |
| if (!layout_view) |
| return nullptr; |
| |
| LayoutObject* first_child = layout_view->FirstChild(); |
| if (!first_child || !first_child->IsBox()) |
| return nullptr; |
| |
| // Currently only embedded SVG documents participate in the size-negotiation |
| // logic. |
| if (first_child->IsSVGRoot()) |
| return ToLayoutSVGRoot(first_child); |
| |
| return nullptr; |
| } |
| |
| bool LocalFrameView::GetIntrinsicSizingInfo( |
| IntrinsicSizingInfo& intrinsic_sizing_info) const { |
| if (LayoutReplaced* content_layout_object = EmbeddedReplacedContent()) { |
| content_layout_object->ComputeIntrinsicSizingInfo(intrinsic_sizing_info); |
| return true; |
| } |
| return false; |
| } |
| |
| bool LocalFrameView::HasIntrinsicSizingInfo() const { |
| return EmbeddedReplacedContent(); |
| } |
| |
| void LocalFrameView::UpdateGeometry() { |
| LayoutEmbeddedContent* layout = frame_->OwnerLayoutObject(); |
| if (!layout) |
| return; |
| |
| bool did_need_layout = NeedsLayout(); |
| |
| LayoutRect new_frame = layout->ReplacedContentRect(); |
| DCHECK(new_frame.Size() == RoundedIntSize(new_frame.Size())); |
| bool bounds_will_change = LayoutSize(Size()) != new_frame.Size(); |
| |
| // If frame bounds are changing mark the view for layout. Also check the |
| // frame's page to make sure that the frame isn't in the process of being |
| // destroyed. If iframe scrollbars needs reconstruction from native to custom |
| // scrollbar, then also we need to layout the frameview. |
| if (bounds_will_change || NeedsScrollbarReconstruction()) |
| SetNeedsLayout(); |
| |
| layout->UpdateGeometry(*this); |
| // If view needs layout, either because bounds have changed or possibly |
| // indicating content size is wrong, we have to do a layout to set the right |
| // LocalFrameView size. |
| if (NeedsLayout()) |
| UpdateLayout(); |
| |
| if (!did_need_layout && !ShouldThrottleRendering()) |
| CheckDoesNotNeedLayout(); |
| } |
| |
| void LocalFrameView::AddPartToUpdate(LayoutEmbeddedObject& object) { |
| DCHECK(IsInPerformLayout()); |
| // Tell the DOM element that it needs a Plugin update. |
| Node* node = object.GetNode(); |
| DCHECK(node); |
| if (IsHTMLObjectElement(*node) || IsHTMLEmbedElement(*node)) |
| ToHTMLPlugInElement(node)->SetNeedsPluginUpdate(true); |
| |
| part_update_set_.insert(&object); |
| } |
| |
| void LocalFrameView::SetDisplayMode(WebDisplayMode mode) { |
| if (mode == display_mode_) |
| return; |
| |
| display_mode_ = mode; |
| |
| if (frame_->GetDocument()) |
| frame_->GetDocument()->MediaQueryAffectingValueChanged(); |
| } |
| |
| void LocalFrameView::SetDisplayShape(DisplayShape display_shape) { |
| if (display_shape == display_shape_) |
| return; |
| |
| display_shape_ = display_shape; |
| |
| if (frame_->GetDocument()) |
| frame_->GetDocument()->MediaQueryAffectingValueChanged(); |
| } |
| |
| void LocalFrameView::SetMediaType(const AtomicString& media_type) { |
| DCHECK(frame_->GetDocument()); |
| media_type_ = media_type; |
| frame_->GetDocument()->MediaQueryAffectingValueChanged(); |
| } |
| |
| AtomicString LocalFrameView::MediaType() const { |
| // See if we have an override type. |
| if (frame_->GetSettings() && |
| !frame_->GetSettings()->GetMediaTypeOverride().IsEmpty()) |
| return AtomicString(frame_->GetSettings()->GetMediaTypeOverride()); |
| return media_type_; |
| } |
| |
| void LocalFrameView::AdjustMediaTypeForPrinting(bool printing) { |
| if (printing) { |
| if (media_type_when_not_printing_.IsNull()) |
| media_type_when_not_printing_ = MediaType(); |
| SetMediaType(MediaTypeNames::print); |
| } else { |
| if (!media_type_when_not_printing_.IsNull()) |
| SetMediaType(media_type_when_not_printing_); |
| media_type_when_not_printing_ = g_null_atom; |
| } |
| |
| frame_->GetDocument()->SetNeedsStyleRecalc( |
| kSubtreeStyleChange, StyleChangeReasonForTracing::Create( |
| StyleChangeReason::kStyleSheetChange)); |
| } |
| |
| bool LocalFrameView::ContentsInCompositedLayer() const { |
| auto* layout_view = this->GetLayoutView(); |
| return layout_view && |
| layout_view->GetCompositingState() == kPaintsIntoOwnBacking; |
| } |
| |
| void LocalFrameView::AddBackgroundAttachmentFixedObject(LayoutObject* object) { |
| DCHECK(!background_attachment_fixed_objects_.Contains(object)); |
| |
| background_attachment_fixed_objects_.insert(object); |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) { |
| scrolling_coordinator |
| ->FrameViewHasBackgroundAttachmentFixedObjectsDidChange(this); |
| } |
| |
| // Ensure main thread scrolling reasons are recomputed. |
| SetNeedsPaintPropertyUpdate(); |
| // The object's scroll properties are not affected by its own background. |
| object->SetAncestorsNeedPaintPropertyUpdateForMainThreadScrolling(); |
| } |
| |
| void LocalFrameView::RemoveBackgroundAttachmentFixedObject( |
| LayoutObject* object) { |
| DCHECK(background_attachment_fixed_objects_.Contains(object)); |
| |
| background_attachment_fixed_objects_.erase(object); |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) { |
| scrolling_coordinator |
| ->FrameViewHasBackgroundAttachmentFixedObjectsDidChange(this); |
| } |
| |
| // Ensure main thread scrolling reasons are recomputed. |
| SetNeedsPaintPropertyUpdate(); |
| // The object's scroll properties are not affected by its own background. |
| object->SetAncestorsNeedPaintPropertyUpdateForMainThreadScrolling(); |
| } |
| |
| void LocalFrameView::AddViewportConstrainedObject(LayoutObject& object) { |
| if (!viewport_constrained_objects_) { |
| viewport_constrained_objects_ = |
| std::make_unique<ViewportConstrainedObjectSet>(); |
| } |
| |
| if (!viewport_constrained_objects_->Contains(&object)) { |
| viewport_constrained_objects_->insert(&object); |
| |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) |
| scrolling_coordinator->FrameViewFixedObjectsDidChange(this); |
| } |
| } |
| |
| void LocalFrameView::RemoveViewportConstrainedObject(LayoutObject& object) { |
| if (viewport_constrained_objects_ && |
| viewport_constrained_objects_->Contains(&object)) { |
| viewport_constrained_objects_->erase(&object); |
| |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) |
| scrolling_coordinator->FrameViewFixedObjectsDidChange(this); |
| } |
| } |
| |
| void LocalFrameView::ViewportSizeChanged(bool width_changed, |
| bool height_changed) { |
| DCHECK(width_changed || height_changed); |
| DCHECK(frame_->GetPage()); |
| if (frame_->GetDocument() && |
| frame_->GetDocument()->Lifecycle().LifecyclePostponed()) |
| return; |
| |
| bool root_layer_scrolling_enabled = |
| RuntimeEnabledFeatures::RootLayerScrollingEnabled(); |
| |
| if (LayoutView* layout_view = this->GetLayoutView()) { |
| // If this is the main frame, we might have got here by hiding/showing the |
| // top controls. In that case, layout won't be triggered, so we need to |
| // clamp the scroll offset here. |
| if (GetFrame().IsMainFrame()) { |
| if (root_layer_scrolling_enabled) { |
| layout_view->Layer()->UpdateSize(); |
| layout_view->GetScrollableArea() |
| ->ClampScrollOffsetAfterOverflowChange(); |
| } else { |
| AdjustScrollOffsetFromUpdateScrollbars(); |
| } |
| } |
| |
| if (layout_view->UsesCompositing()) { |
| if (root_layer_scrolling_enabled) { |
| layout_view->Layer()->SetNeedsCompositingInputsUpdate(); |
| SetNeedsPaintPropertyUpdate(); |
| } else { |
| layout_view->Compositor()->FrameViewDidChangeSize(); |
| } |
| } |
| } |
| |
| if (GetFrame().GetDocument()) |
| GetFrame().GetDocument()->GetRootScrollerController().DidResizeFrameView(); |
| |
| ShowOverlayScrollbars(); |
| |
| if (GetLayoutView() && frame_->IsMainFrame() && |
| frame_->GetPage()->GetBrowserControls().TotalHeight()) { |
| if (GetLayoutView()->Style()->HasFixedBackgroundImage()) { |
| // In the case where we don't change layout size from top control resizes, |
| // we wont perform a layout. If we have a fixed background image however, |
| // the background layer needs to get resized so we should request a layout |
| // explicitly. |
| if (GetLayoutView()->Compositor()->NeedsFixedRootBackgroundLayer()) { |
| SetNeedsLayout(); |
| } else { |
| // If root layer scrolls is on, we've already issued a full invalidation |
| // above. |
| GetLayoutView()->SetShouldDoFullPaintInvalidationOnResizeIfNeeded( |
| width_changed, height_changed); |
| } |
| } else if (height_changed) { |
| // If the document rect doesn't fill the full view height, hiding the |
| // URL bar will expose area outside the current LayoutView so we need to |
| // paint additional background. If RLS is on, we've already invalidated |
| // above. |
| auto* layout_view = GetLayoutView(); |
| DCHECK(layout_view); |
| if (layout_view->DocumentRect().Height() < |
| layout_view->ViewRect().Height()) { |
| layout_view->SetShouldDoFullPaintInvalidation( |
| PaintInvalidationReason::kGeometry); |
| } |
| } |
| } |
| |
| if (GetFrame().GetDocument() && !IsInPerformLayout()) |
| MarkViewportConstrainedObjectsForLayout(width_changed, height_changed); |
| } |
| |
| void LocalFrameView::MarkViewportConstrainedObjectsForLayout( |
| bool width_changed, |
| bool height_changed) { |
| if (!HasViewportConstrainedObjects() || !(width_changed || height_changed)) |
| return; |
| |
| for (auto* const viewport_constrained_object : |
| *viewport_constrained_objects_) { |
| LayoutObject* layout_object = viewport_constrained_object; |
| const ComputedStyle& style = layout_object->StyleRef(); |
| if (width_changed) { |
| if (style.Width().IsFixed() && |
| (style.Left().IsAuto() || style.Right().IsAuto())) { |
| layout_object->SetNeedsPositionedMovementLayout(); |
| } else { |
| layout_object->SetNeedsLayoutAndFullPaintInvalidation( |
| LayoutInvalidationReason::kSizeChanged); |
| } |
| } |
| if (height_changed) { |
| if (style.Height().IsFixed() && |
| (style.Top().IsAuto() || style.Bottom().IsAuto())) { |
| layout_object->SetNeedsPositionedMovementLayout(); |
| } else { |
| layout_object->SetNeedsLayoutAndFullPaintInvalidation( |
| LayoutInvalidationReason::kSizeChanged); |
| } |
| } |
| } |
| } |
| |
| IntPoint LocalFrameView::LastKnownMousePosition() const { |
| return frame_->GetEventHandler().LastKnownMousePosition(); |
| } |
| |
| bool LocalFrameView::ShouldSetCursor() const { |
| Page* page = GetFrame().GetPage(); |
| return page && |
| page->VisibilityState() != mojom::PageVisibilityState::kHidden && |
| !frame_->GetEventHandler().IsMousePositionUnknown() && |
| page->GetFocusController().IsActive(); |
| } |
| |
| void LocalFrameView::NotifyFrameRectsChangedIfNeededRecursive() { |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.NotifyFrameRectsChangedIfNeeded(); |
| }); |
| } |
| |
| void LocalFrameView::ScrollContentsIfNeededRecursive() { |
| ForAllNonThrottledLocalFrameViews( |
| [](LocalFrameView& frame_view) { frame_view.ScrollContentsIfNeeded(); }); |
| } |
| |
| void LocalFrameView::InvalidateBackgroundAttachmentFixedDescendants( |
| const LayoutObject& object) { |
| for (auto* const layout_object : background_attachment_fixed_objects_) { |
| if (object != GetLayoutView() && !layout_object->IsDescendantOf(&object)) |
| continue; |
| |
| bool needs_scrolling_contents_layer_invalidation = false; |
| if (layout_object->HasLayer()) { |
| PaintLayer* layer = ToLayoutBoxModelObject(layout_object)->Layer(); |
| if (layer->GetBackgroundPaintLocation() == |
| kBackgroundPaintInScrollingContents) { |
| needs_scrolling_contents_layer_invalidation = true; |
| } |
| } |
| if (needs_scrolling_contents_layer_invalidation) { |
| // BoxPaintInvalidator doesn't want to invalidate scrolling contents layer |
| // whenever the LayoutObject is marked ShouldDoFullPaintInvalidation() - |
| // see crrev.com/433093. (LayoutObject doesn't track full-invalidation |
| // reasons independently, so it's not safe for BoxPaintInvalidator to have |
| // special handling of kBackground.) |
| layout_object->SetBackgroundChangedSinceLastPaintInvalidation(); |
| } else { |
| layout_object->SetShouldDoFullPaintInvalidation( |
| PaintInvalidationReason::kBackground); |
| } |
| } |
| } |
| |
| bool LocalFrameView::HasBackgroundAttachmentFixedDescendants( |
| const LayoutObject& object) const { |
| if (object == GetLayoutView()) |
| return !background_attachment_fixed_objects_.IsEmpty(); |
| |
| for (const auto* potential_descendant : |
| background_attachment_fixed_objects_) { |
| if (potential_descendant == &object) |
| continue; |
| if (potential_descendant->IsDescendantOf(&object)) |
| return true; |
| } |
| return false; |
| } |
| |
| bool LocalFrameView::InvalidateViewportConstrainedObjects() { |
| bool fast_path_allowed = true; |
| for (auto* const viewport_constrained_object : |
| *viewport_constrained_objects_) { |
| LayoutObject* layout_object = viewport_constrained_object; |
| DCHECK(layout_object->Style()->HasViewportConstrainedPosition() || |
| layout_object->Style()->HasStickyConstrainedPosition()); |
| DCHECK(layout_object->HasLayer()); |
| PaintLayer* layer = ToLayoutBoxModelObject(layout_object)->Layer(); |
| |
| if (layer->IsPaintInvalidationContainer()) |
| continue; |
| |
| // If the layer has no visible content, then we shouldn't invalidate; but |
| // if we're not compositing-inputs-clean, then we can't query |
| // layer->SubtreeIsInvisible() here. |
| layout_object->SetMayNeedPaintInvalidationSubtree(); |
| if (!RuntimeEnabledFeatures::SlimmingPaintV2Enabled() && |
| RuntimeEnabledFeatures::SlimmingPaintV175Enabled() && |
| !layer->NeedsRepaint()) { |
| // Paint properties of the layer relative to its containing graphics |
| // layer may change if the paint properties escape the graphics layer's |
| // property state. Need to check raster invalidation for relative paint |
| // property changes. |
| if (auto* paint_invalidation_layer = |
| layer->EnclosingLayerForPaintInvalidation()) { |
| auto* mapping = paint_invalidation_layer->GetCompositedLayerMapping(); |
| if (!mapping) |
| mapping = paint_invalidation_layer->GroupedMapping(); |
| if (mapping) |
| mapping->SetNeedsCheckRasterInvalidation(); |
| } |
| } |
| |
| TRACE_EVENT_INSTANT1( |
| TRACE_DISABLED_BY_DEFAULT("devtools.timeline.invalidationTracking"), |
| "ScrollInvalidationTracking", TRACE_EVENT_SCOPE_THREAD, "data", |
| InspectorScrollInvalidationTrackingEvent::Data(*layout_object)); |
| |
| // If the fixed layer has a blur/drop-shadow filter applied on at least one |
| // of its parents, we cannot scroll using the fast path, otherwise the |
| // outsets of the filter will be moved around the page. |
| if (layer->HasAncestorWithFilterThatMovesPixels()) |
| fast_path_allowed = false; |
| } |
| return fast_path_allowed; |
| } |
| |
| bool LocalFrameView::ScrollContentsFastPath(const IntSize& scroll_delta) { |
| if (!ContentsInCompositedLayer()) |
| return false; |
| |
| InvalidateBackgroundAttachmentFixedDescendants(*GetLayoutView()); |
| |
| if (!viewport_constrained_objects_ || |
| viewport_constrained_objects_->IsEmpty()) { |
| probe::didChangeViewport(frame_.Get()); |
| return true; |
| } |
| |
| if (!InvalidateViewportConstrainedObjects()) |
| return false; |
| |
| probe::didChangeViewport(frame_.Get()); |
| return true; |
| } |
| |
| void LocalFrameView::ScrollContentsSlowPath() { |
| TRACE_EVENT0("blink", "LocalFrameView::scrollContentsSlowPath"); |
| // We need full invalidation during slow scrolling. For slimming paint, full |
| // invalidation of the LayoutView is not enough. We also need to invalidate |
| // all of the objects. |
| // FIXME: Find out what are enough to invalidate in slow path scrolling. |
| // crbug.com/451090#9. |
| auto* layout_view = GetLayoutView(); |
| DCHECK(layout_view); |
| if (ContentsInCompositedLayer()) { |
| layout_view->Layer()->GetCompositedLayerMapping()->SetContentsNeedDisplay(); |
| } else { |
| layout_view |
| ->SetShouldDoFullPaintInvalidationIncludingNonCompositingDescendants(); |
| } |
| |
| if (ContentsInCompositedLayer()) { |
| IntRect update_rect = VisibleContentRect(); |
| layout_view->InvalidatePaintRectangle(LayoutRect(update_rect)); |
| } |
| } |
| |
| void LocalFrameView::RestoreScrollbar() { |
| SetScrollbarsSuppressed(false); |
| } |
| |
| bool LocalFrameView::RestoreScrollAnchor( |
| const SerializedAnchor& serialized_anchor) { |
| return ShouldPerformScrollAnchoring() && |
| scroll_anchor_.RestoreAnchor(serialized_anchor); |
| } |
| |
| void LocalFrameView::ProcessUrlFragment(const KURL& url, |
| UrlFragmentBehavior behavior) { |
| // If our URL has no ref, then we have no place we need to jump to. |
| // OTOH If CSS target was set previously, we want to set it to 0, recalc |
| // and possibly paint invalidation because :target pseudo class may have been |
| // set (see bug 11321). |
| // Similarly for svg, if we had a previous svgView() then we need to reset |
| // the initial view if we don't have a fragment. |
| if (!url.HasFragmentIdentifier() && !frame_->GetDocument()->CssTarget() && |
| !frame_->GetDocument()->IsSVGDocument()) |
| return; |
| |
| UseCounter::Count(&GetFrame(), WebFeature::kScrollToFragmentRequested); |
| // Try the raw fragment for HTML documents, but skip it for `svgView()`: |
| String fragment_identifier = url.FragmentIdentifier(); |
| if (!frame_->GetDocument()->IsSVGDocument() && |
| ProcessUrlFragmentHelper(fragment_identifier, behavior)) { |
| UseCounter::Count(&GetFrame(), WebFeature::kScrollToFragmentSucceedWithRaw); |
| return; |
| } |
| |
| // Try again after decoding the fragment. |
| if (frame_->GetDocument()->Encoding().IsValid()) { |
| DecodeURLResult decode_result; |
| if (ProcessUrlFragmentHelper( |
| DecodeURLEscapeSequences(fragment_identifier, &decode_result), |
| behavior)) { |
| switch (decode_result) { |
| case DecodeURLResult::kAsciiOnly: |
| UseCounter::Count(&GetFrame(), |
| WebFeature::kScrollToFragmentSucceedWithASCII); |
| break; |
| case DecodeURLResult::kUTF8: |
| UseCounter::Count(&GetFrame(), |
| WebFeature::kScrollToFragmentSucceedWithUTF8); |
| break; |
| case DecodeURLResult::kIsomorphic: |
| UseCounter::Count(&GetFrame(), |
| WebFeature::kScrollToFragmentSucceedWithIsomorphic); |
| break; |
| case DecodeURLResult::kMixed: |
| UseCounter::Count(&GetFrame(), |
| WebFeature::kScrollToFragmentSucceedWithMixed); |
| break; |
| } |
| } else { |
| switch (decode_result) { |
| case DecodeURLResult::kAsciiOnly: |
| UseCounter::Count(&GetFrame(), |
| WebFeature::kScrollToFragmentFailWithASCII); |
| break; |
| case DecodeURLResult::kUTF8: |
| UseCounter::Count(&GetFrame(), |
| WebFeature::kScrollToFragmentFailWithUTF8); |
| break; |
| case DecodeURLResult::kIsomorphic: |
| UseCounter::Count(&GetFrame(), |
| WebFeature::kScrollToFragmentFailWithIsomorphic); |
| break; |
| case DecodeURLResult::kMixed: |
| UseCounter::Count(&GetFrame(), |
| WebFeature::kScrollToFragmentFailWithMixed); |
| break; |
| } |
| } |
| } else { |
| UseCounter::Count(&GetFrame(), |
| WebFeature::kScrollToFragmentFailWithInvalidEncoding); |
| } |
| } |
| |
| bool LocalFrameView::ProcessUrlFragmentHelper(const String& name, |
| UrlFragmentBehavior behavior) { |
| DCHECK(frame_->GetDocument()); |
| |
| Element* anchor_node = frame_->GetDocument()->FindAnchor(name); |
| |
| // Setting to null will clear the current target. |
| frame_->GetDocument()->SetCSSTarget(anchor_node); |
| |
| if (frame_->GetDocument()->IsSVGDocument()) { |
| if (SVGSVGElement* svg = |
| ToSVGSVGElementOrNull(frame_->GetDocument()->documentElement())) { |
| svg->SetupInitialView(name, anchor_node); |
| if (!anchor_node) |
| return false; |
| } |
| // If this is not the top-level frame, then don't scroll to the |
| // anchor position. |
| if (!frame_->IsMainFrame()) |
| return false; |
| } |
| |
| // Implement the rule that "" and "top" both mean top of page as in other |
| // browsers. |
| if (!anchor_node && |
| !(name.IsEmpty() || DeprecatedEqualIgnoringCase(name, "top"))) |
| return false; |
| |
| if (behavior == kUrlFragmentDontScroll) |
| return true; |
| |
| if (!anchor_node) { |
| fragment_anchor_ = frame_->GetDocument(); |
| needs_focus_on_fragment_ = false; |
| } else { |
| fragment_anchor_ = anchor_node; |
| needs_focus_on_fragment_ = true; |
| } |
| |
| // If rendering is blocked, we'll necessarily have a layout to kick off the |
| // scroll and focus. |
| if (frame_->GetDocument()->IsRenderingReady()) { |
| frame_->GetDocument()->UpdateStyleAndLayoutTree(); |
| |
| // If layout is needed, we will scroll in performPostLayoutTasks. Otherwise, |
| // scroll and focus immediately. |
| if (NeedsLayout()) |
| UpdateLayout(); |
| else |
| ScrollAndFocusFragmentAnchor(); |
| } |
| |
| return true; |
| } |
| |
| void LocalFrameView::ClearFragmentAnchor() { |
| fragment_anchor_ = nullptr; |
| } |
| |
| void LocalFrameView::DidUpdateElasticOverscroll() { |
| Page* page = GetFrame().GetPage(); |
| if (!page) |
| return; |
| FloatSize elastic_overscroll = page->GetChromeClient().ElasticOverscroll(); |
| if (HorizontalScrollbar()) { |
| float delta = |
| elastic_overscroll.Width() - HorizontalScrollbar()->ElasticOverscroll(); |
| if (delta != 0) { |
| HorizontalScrollbar()->SetElasticOverscroll(elastic_overscroll.Width()); |
| GetScrollAnimator().NotifyContentAreaScrolled(FloatSize(delta, 0), |
| kCompositorScroll); |
| SetScrollbarNeedsPaintInvalidation(kHorizontalScrollbar); |
| } |
| } |
| if (VerticalScrollbar()) { |
| float delta = |
| elastic_overscroll.Height() - VerticalScrollbar()->ElasticOverscroll(); |
| if (delta != 0) { |
| VerticalScrollbar()->SetElasticOverscroll(elastic_overscroll.Height()); |
| GetScrollAnimator().NotifyContentAreaScrolled(FloatSize(0, delta), |
| kCompositorScroll); |
| SetScrollbarNeedsPaintInvalidation(kVerticalScrollbar); |
| } |
| } |
| } |
| |
| IntSize LocalFrameView::GetLayoutSize( |
| IncludeScrollbarsInRect scrollbar_inclusion) const { |
| return scrollbar_inclusion == kExcludeScrollbars |
| ? ExcludeScrollbars(layout_size_) |
| : layout_size_; |
| } |
| |
| void LocalFrameView::SetLayoutSize(const IntSize& size) { |
| DCHECK(!LayoutSizeFixedToFrameSize()); |
| if (frame_->GetDocument() && |
| frame_->GetDocument()->Lifecycle().LifecyclePostponed()) |
| return; |
| |
| SetLayoutSizeInternal(size); |
| } |
| |
| void LocalFrameView::SetLayoutSizeFixedToFrameSize(bool is_fixed) { |
| if (layout_size_fixed_to_frame_size_ == is_fixed) |
| return; |
| |
| layout_size_fixed_to_frame_size_ = is_fixed; |
| if (is_fixed) |
| SetLayoutSizeInternal(Size()); |
| } |
| |
| void LocalFrameView::DidScrollTimerFired(TimerBase*) { |
| if (frame_->GetDocument() && frame_->GetDocument()->GetLayoutView()) |
| frame_->GetDocument()->Fetcher()->UpdateAllImageResourcePriorities(); |
| |
| GetFrame().Loader().SaveScrollAnchor(); |
| } |
| |
| void LocalFrameView::UpdateLayersAndCompositingAfterScrollIfNeeded() { |
| // Nothing to do after scrolling if there are no fixed position elements. |
| if (!HasViewportConstrainedObjects()) |
| return; |
| |
| // Update sticky position objects which are stuck to the viewport. In order to |
| // correctly compute the sticky position offsets the layers must be visited |
| // top-down, so start at the 'root' sticky elements and recurse downwards. |
| for (auto* const viewport_constrained_object : |
| *viewport_constrained_objects_) { |
| LayoutObject* layout_object = viewport_constrained_object; |
| if (layout_object->Style()->GetPosition() != EPosition::kSticky) |
| continue; |
| |
| PaintLayer* layer = ToLayoutBoxModelObject(layout_object)->Layer(); |
| |
| // This method can be called during layout at which point the ancestor |
| // overflow layer may not be set yet. We can safely skip such cases as we |
| // will revisit this method during compositing inputs update. |
| if (!layer->AncestorOverflowLayer()) |
| continue; |
| |
| const StickyConstraintsMap& constraints_map = |
| layer->AncestorOverflowLayer() |
| ->GetScrollableArea() |
| ->GetStickyConstraintsMap(); |
| if (constraints_map.Contains(layer) && |
| !constraints_map.at(layer).HasAncestorStickyElement()) { |
| // TODO(skobes): Resolve circular dependency between scroll offset and |
| // compositing state, and remove this disabler. https://crbug.com/420741 |
| DisableCompositingQueryAsserts disabler; |
| layer->UpdateLayerPositionsAfterOverflowScroll(); |
| layout_object->SetMayNeedPaintInvalidationSubtree(); |
| SetNeedsUpdateGeometries(); |
| } |
| } |
| |
| // If there fixed position elements, scrolling may cause compositing layers to |
| // change. Update LocalFrameView and layer positions after scrolling, but |
| // only if we're not inside of layout. |
| if (!nested_layout_count_) { |
| UpdateGeometriesIfNeeded(); |
| if (auto* layout_view = this->GetLayoutView()) |
| layout_view->Layer()->SetNeedsCompositingInputsUpdate(); |
| } |
| } |
| |
| static CompositedSelection ComputeCompositedSelection(LocalFrame& frame) { |
| if (!frame.View() || frame.View()->ShouldThrottleRendering()) |
| return {}; |
| |
| return RenderedPosition::ComputeCompositedSelection(frame.Selection()); |
| } |
| |
| void LocalFrameView::UpdateCompositedSelectionIfNeeded() { |
| if (!RuntimeEnabledFeatures::CompositedSelectionUpdateEnabled()) |
| return; |
| |
| TRACE_EVENT0("blink", "LocalFrameView::updateCompositedSelectionIfNeeded"); |
| |
| Page* page = GetFrame().GetPage(); |
| DCHECK(page); |
| |
| LocalFrame* focused_frame = page->GetFocusController().FocusedFrame(); |
| LocalFrame* local_frame = |
| (focused_frame && |
| (focused_frame->LocalFrameRoot() == frame_->LocalFrameRoot())) |
| ? focused_frame |
| : nullptr; |
| |
| if (local_frame) { |
| const CompositedSelection& selection = |
| ComputeCompositedSelection(*local_frame); |
| if (selection.type != kNoSelection) { |
| page->GetChromeClient().UpdateCompositedSelection(local_frame, selection); |
| return; |
| } |
| } |
| |
| if (!local_frame) { |
| // Clearing the mainframe when there is no focused frame (and hence |
| // no localFrame) is legacy behaviour, and implemented here to |
| // satisfy WebFrameTest.CompositedSelectionBoundsCleared's |
| // first check that the composited selection has been cleared even |
| // though no frame has focus yet. If this is not desired, then the |
| // expectation needs to be removed from the test. |
| local_frame = &frame_->LocalFrameRoot(); |
| } |
| DCHECK(local_frame); |
| page->GetChromeClient().ClearCompositedSelection(local_frame); |
| } |
| |
| void LocalFrameView::SetNeedsCompositingUpdate( |
| CompositingUpdateType update_type) { |
| if (auto* layout_view = GetLayoutView()) { |
| if (frame_->GetDocument()->IsActive()) |
| layout_view->Compositor()->SetNeedsCompositingUpdate(update_type); |
| } |
| } |
| |
| PlatformChromeClient* LocalFrameView::GetChromeClient() const { |
| Page* page = GetFrame().GetPage(); |
| if (!page) |
| return nullptr; |
| return &page->GetChromeClient(); |
| } |
| |
| SmoothScrollSequencer* LocalFrameView::GetSmoothScrollSequencer() const { |
| Page* page = GetFrame().GetPage(); |
| if (!page) |
| return nullptr; |
| return page->GetSmoothScrollSequencer(); |
| } |
| |
| void LocalFrameView::ContentsResized() { |
| if (frame_->IsMainFrame() && frame_->GetDocument()) { |
| if (TextAutosizer* text_autosizer = |
| frame_->GetDocument()->GetTextAutosizer()) |
| text_autosizer->UpdatePageInfoInAllFrames(); |
| } |
| |
| ScrollableArea::ContentsResized(); |
| SetNeedsLayout(); |
| } |
| |
| void LocalFrameView::ScrollbarExistenceMaybeChanged() { |
| // We check to make sure the view is attached to a frame() as this method can |
| // be triggered before the view is attached by LocalFrame::createView(...) |
| // setting various values such as setScrollBarModes(...) for example. An |
| // ASSERT is triggered when a view is layout before being attached to a |
| // frame(). |
| if (!GetFrame().View()) |
| return; |
| |
| Element* custom_scrollbar_element = nullptr; |
| |
| bool uses_overlay_scrollbars = |
| GetPageScrollbarTheme().UsesOverlayScrollbars() && |
| !ShouldUseCustomScrollbars(custom_scrollbar_element); |
| |
| if (!uses_overlay_scrollbars && NeedsLayout()) |
| UpdateLayout(); |
| |
| auto* layout_view = GetLayoutView(); |
| if (layout_view && layout_view->UsesCompositing()) { |
| layout_view->Compositor()->FrameViewScrollbarsExistenceDidChange(); |
| |
| if (!uses_overlay_scrollbars) |
| layout_view->Compositor()->FrameViewDidChangeSize(); |
| } |
| } |
| |
| void LocalFrameView::HandleLoadCompleted() { |
| // Once loading has completed, allow autoSize one last opportunity to |
| // reduce the size of the frame. |
| if (auto_size_info_) |
| auto_size_info_->AutoSizeIfNeeded(); |
| |
| // If there is a pending layout, the fragment anchor will be cleared when it |
| // finishes. |
| if (!NeedsLayout()) |
| ClearFragmentAnchor(); |
| } |
| |
| void LocalFrameView::ClearLayoutSubtreeRoot(const LayoutObject& root) { |
| layout_subtree_root_list_.Remove(const_cast<LayoutObject&>(root)); |
| } |
| |
| void LocalFrameView::ClearLayoutSubtreeRootsAndMarkContainingBlocks() { |
| layout_subtree_root_list_.ClearAndMarkContainingBlocksForLayout(); |
| } |
| |
| void LocalFrameView::AddOrthogonalWritingModeRoot(LayoutBox& root) { |
| DCHECK(!root.IsLayoutScrollbarPart()); |
| orthogonal_writing_mode_root_list_.Add(root); |
| } |
| |
| void LocalFrameView::RemoveOrthogonalWritingModeRoot(LayoutBox& root) { |
| orthogonal_writing_mode_root_list_.Remove(root); |
| } |
| |
| bool LocalFrameView::HasOrthogonalWritingModeRoots() const { |
| return !orthogonal_writing_mode_root_list_.IsEmpty(); |
| } |
| |
| static inline void RemoveFloatingObjectsForSubtreeRoot(LayoutObject& root) { |
| // TODO(kojii): Under certain conditions, moveChildTo() defers |
| // removeFloatingObjects() until the containing block layouts. For |
| // instance, when descendants of the moving child is floating, |
| // removeChildNode() does not clear them. In such cases, at this |
| // point, FloatingObjects may contain old or even deleted objects. |
| // Dealing this in markAllDescendantsWithFloatsForLayout() could |
| // solve, but since that is likely to suffer the performance and |
| // since the containing block of orthogonal writing mode roots |
| // having floats is very rare, prefer to re-create |
| // FloatingObjects. |
| if (LayoutBlock* cb = root.ContainingBlock()) { |
| if ((cb->NormalChildNeedsLayout() || cb->SelfNeedsLayout()) && |
| cb->IsLayoutBlockFlow()) { |
| ToLayoutBlockFlow(cb)->RemoveFloatingObjectsFromDescendants(); |
| } |
| } |
| } |
| |
| static bool PrepareOrthogonalWritingModeRootForLayout(LayoutObject& root) { |
| DCHECK(root.IsBox() && ToLayoutBox(root).IsOrthogonalWritingModeRoot()); |
| if (!root.NeedsLayout() || root.IsOutOfFlowPositioned() || |
| root.IsColumnSpanAll() || |
| !root.StyleRef().LogicalHeight().IsIntrinsicOrAuto() || |
| ToLayoutBox(root).IsGridItem() || root.IsTablePart()) |
| return false; |
| |
| RemoveFloatingObjectsForSubtreeRoot(root); |
| return true; |
| } |
| |
| void LocalFrameView::LayoutOrthogonalWritingModeRoots() { |
| for (auto& root : orthogonal_writing_mode_root_list_.Ordered()) { |
| if (PrepareOrthogonalWritingModeRootForLayout(*root)) |
| LayoutFromRootObject(*root); |
| } |
| } |
| |
| void LocalFrameView::ScheduleOrthogonalWritingModeRootsForLayout() { |
| for (auto& root : orthogonal_writing_mode_root_list_.Ordered()) { |
| if (PrepareOrthogonalWritingModeRootForLayout(*root)) |
| layout_subtree_root_list_.Add(*root); |
| } |
| } |
| |
| bool LocalFrameView::CheckLayoutInvalidationIsAllowed() const { |
| if (allows_layout_invalidation_after_layout_clean_) |
| return true; |
| |
| // If we are updating all lifecycle phases beyond LayoutClean, we don't expect |
| // dirty layout after LayoutClean. |
| CHECK_FOR_DIRTY_LAYOUT(Lifecycle().GetState() < |
| DocumentLifecycle::kLayoutClean); |
| |
| return true; |
| } |
| |
| void LocalFrameView::ScheduleRelayout() { |
| DCHECK(frame_->View() == this); |
| |
| if (!layout_scheduling_enabled_) |
| return; |
| // TODO(crbug.com/590856): It's still broken when we choose not to crash when |
| // the check fails. |
| if (!CheckLayoutInvalidationIsAllowed()) |
| return; |
| if (!NeedsLayout()) |
| return; |
| if (!frame_->GetDocument()->ShouldScheduleLayout()) |
| return; |
| TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), |
| "InvalidateLayout", TRACE_EVENT_SCOPE_THREAD, "data", |
| InspectorInvalidateLayoutEvent::Data(frame_.Get())); |
| |
| ClearLayoutSubtreeRootsAndMarkContainingBlocks(); |
| |
| if (has_pending_layout_) |
| return; |
| has_pending_layout_ = true; |
| |
| if (!ShouldThrottleRendering()) |
| GetPage()->Animator().ScheduleVisualUpdate(frame_.Get()); |
| } |
| |
| void LocalFrameView::ScheduleRelayoutOfSubtree(LayoutObject* relayout_root) { |
| DCHECK(frame_->View() == this); |
| |
| // TODO(crbug.com/590856): It's still broken when we choose not to crash when |
| // the check fails. |
| if (!CheckLayoutInvalidationIsAllowed()) |
| return; |
| |
| // FIXME: Should this call shouldScheduleLayout instead? |
| if (!frame_->GetDocument()->IsActive()) |
| return; |
| |
| LayoutView* layout_view = this->GetLayoutView(); |
| if (layout_view && layout_view->NeedsLayout()) { |
| if (relayout_root) |
| relayout_root->MarkContainerChainForLayout(false); |
| return; |
| } |
| |
| if (relayout_root == layout_view) |
| layout_subtree_root_list_.ClearAndMarkContainingBlocksForLayout(); |
| else |
| layout_subtree_root_list_.Add(*relayout_root); |
| |
| if (layout_scheduling_enabled_) { |
| has_pending_layout_ = true; |
| |
| if (!ShouldThrottleRendering()) |
| GetPage()->Animator().ScheduleVisualUpdate(frame_.Get()); |
| |
| Lifecycle().EnsureStateAtMost(DocumentLifecycle::kStyleClean); |
| } |
| TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), |
| "InvalidateLayout", TRACE_EVENT_SCOPE_THREAD, "data", |
| InspectorInvalidateLayoutEvent::Data(frame_.Get())); |
| } |
| |
| bool LocalFrameView::LayoutPending() const { |
| // FIXME: This should check Document::lifecycle instead. |
| return has_pending_layout_; |
| } |
| |
| bool LocalFrameView::IsInPerformLayout() const { |
| return Lifecycle().GetState() == DocumentLifecycle::kInPerformLayout; |
| } |
| |
| bool LocalFrameView::NeedsLayout() const { |
| // This can return true in cases where the document does not have a body yet. |
| // Document::shouldScheduleLayout takes care of preventing us from scheduling |
| // layout in that case. |
| |
| auto* layout_view = GetLayoutView(); |
| return LayoutPending() || (layout_view && layout_view->NeedsLayout()) || |
| IsSubtreeLayout(); |
| } |
| |
| NOINLINE bool LocalFrameView::CheckDoesNotNeedLayout() const { |
| CHECK_FOR_DIRTY_LAYOUT(!LayoutPending()); |
| CHECK_FOR_DIRTY_LAYOUT(!GetLayoutView() || !GetLayoutView()->NeedsLayout()); |
| CHECK_FOR_DIRTY_LAYOUT(!IsSubtreeLayout()); |
| return true; |
| } |
| |
| void LocalFrameView::SetNeedsLayout() { |
| auto* layout_view = GetLayoutView(); |
| if (!layout_view) |
| return; |
| // TODO(crbug.com/590856): It's still broken if we choose not to crash when |
| // the check fails. |
| if (!CheckLayoutInvalidationIsAllowed()) |
| return; |
| layout_view->SetNeedsLayout(LayoutInvalidationReason::kUnknown); |
| } |
| |
| bool LocalFrameView::HasOpaqueBackground() const { |
| return !base_background_color_.HasAlpha(); |
| } |
| |
| Color LocalFrameView::BaseBackgroundColor() const { |
| return base_background_color_; |
| } |
| |
| void LocalFrameView::SetBaseBackgroundColor(const Color& background_color) { |
| if (base_background_color_ == background_color) |
| return; |
| |
| base_background_color_ = background_color; |
| |
| if (auto* layout_view = GetLayoutView()) { |
| if (layout_view->Layer()->HasCompositedLayerMapping()) { |
| CompositedLayerMapping* composited_layer_mapping = |
| layout_view->Layer()->GetCompositedLayerMapping(); |
| composited_layer_mapping->UpdateContentsOpaque(); |
| if (composited_layer_mapping->MainGraphicsLayer()) |
| composited_layer_mapping->MainGraphicsLayer()->SetNeedsDisplay(); |
| if (composited_layer_mapping->ScrollingContentsLayer()) |
| composited_layer_mapping->ScrollingContentsLayer()->SetNeedsDisplay(); |
| } |
| } |
| RecalculateScrollbarOverlayColorTheme(DocumentBackgroundColor()); |
| |
| if (!ShouldThrottleRendering()) |
| GetPage()->Animator().ScheduleVisualUpdate(frame_.Get()); |
| } |
| |
| void LocalFrameView::UpdateBaseBackgroundColorRecursively( |
| const Color& base_background_color) { |
| ForAllNonThrottledLocalFrameViews( |
| [base_background_color](LocalFrameView& frame_view) { |
| frame_view.SetBaseBackgroundColor(base_background_color); |
| }); |
| } |
| |
| void LocalFrameView::ScrollAndFocusFragmentAnchor() { |
| Node* anchor_node = fragment_anchor_; |
| if (!anchor_node) |
| return; |
| |
| // Scrolling is disabled during updateScrollbars (see |
| // isProgrammaticallyScrollable). Bail now to avoid clearing m_fragmentAnchor |
| // before we actually have a chance to scroll. |
| if (in_update_scrollbars_) |
| return; |
| |
| if (anchor_node->GetLayoutObject()) { |
| LayoutRect rect; |
| if (anchor_node != frame_->GetDocument()) { |
| rect = anchor_node->BoundingBoxForScrollIntoView(); |
| } else if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| if (Element* document_element = frame_->GetDocument()->documentElement()) |
| rect = document_element->BoundingBoxForScrollIntoView(); |
| } |
| |
| Frame* boundary_frame = frame_->FindUnsafeParentScrollPropagationBoundary(); |
| |
| // FIXME: Handle RemoteFrames |
| if (boundary_frame && boundary_frame->IsLocalFrame()) { |
| ToLocalFrame(boundary_frame) |
| ->View() |
| ->SetSafeToPropagateScrollToParent(false); |
| } |
| |
| // Scroll nested layers and frames to reveal the anchor. |
| // Align to the top and to the closest side (this matches other browsers). |
| anchor_node->GetLayoutObject()->ScrollRectToVisible( |
| rect, WebScrollIntoViewParams(ScrollAlignment::kAlignToEdgeIfNeeded, |
| ScrollAlignment::kAlignTopAlways)); |
| |
| if (boundary_frame && boundary_frame->IsLocalFrame()) { |
| ToLocalFrame(boundary_frame) |
| ->View() |
| ->SetSafeToPropagateScrollToParent(true); |
| } |
| |
| if (AXObjectCache* cache = frame_->GetDocument()->ExistingAXObjectCache()) |
| cache->HandleScrolledToAnchor(anchor_node); |
| |
| // If the anchor accepts keyboard focus and fragment scrolling is allowed, |
| // move focus there to aid users relying on keyboard navigation. |
| // If anchorNode is not focusable or fragment scrolling is not allowed, |
| // clear focus, which matches the behavior of other browsers. |
| if (needs_focus_on_fragment_) { |
| if (anchor_node->IsElementNode() && |
| ToElement(anchor_node)->IsFocusable()) { |
| ToElement(anchor_node)->focus(); |
| } else { |
| frame_->GetDocument()->SetSequentialFocusNavigationStartingPoint( |
| anchor_node); |
| frame_->GetDocument()->ClearFocusedElement(); |
| } |
| needs_focus_on_fragment_ = false; |
| } |
| } |
| |
| // The fragment anchor should only be maintained while the frame is still |
| // loading. If the frame is done loading, clear the anchor now. Otherwise, |
| // restore it since it may have been cleared during scrollRectToVisible. |
| fragment_anchor_ = |
| frame_->GetDocument()->IsLoadCompleted() ? nullptr : anchor_node; |
| } |
| |
| bool LocalFrameView::UpdatePlugins() { |
| // This is always called from UpdatePluginsTimerFired. |
| // update_plugins_timer should only be scheduled if we have FrameViews to |
| // update. Thus I believe we can stop checking isEmpty here, and just ASSERT |
| // isEmpty: |
| // FIXME: This assert has been temporarily removed due to |
| // https://crbug.com/430344 |
| if (nested_layout_count_ > 1 || part_update_set_.IsEmpty()) |
| return true; |
| |
| // Need to swap because script will run inside the below loop and invalidate |
| // the iterator. |
| EmbeddedObjectSet objects; |
| objects.swap(part_update_set_); |
| |
| for (const auto& embedded_object : objects) { |
| LayoutEmbeddedObject& object = *embedded_object; |
| HTMLPlugInElement* element = ToHTMLPlugInElement(object.GetNode()); |
| |
| // The object may have already been destroyed (thus node cleared), |
| // but LocalFrameView holds a manual ref, so it won't have been deleted. |
| if (!element) |
| continue; |
| |
| // No need to update if it's already crashed or known to be missing. |
| if (object.ShowsUnavailablePluginIndicator()) |
| continue; |
| |
| if (element->NeedsPluginUpdate()) |
| element->UpdatePlugin(); |
| if (EmbeddedContentView* view = element->OwnedEmbeddedContentView()) |
| view->UpdateGeometry(); |
| |
| // Prevent plugins from causing infinite updates of themselves. |
| // FIXME: Do we really need to prevent this? |
| part_update_set_.erase(&object); |
| } |
| |
| return part_update_set_.IsEmpty(); |
| } |
| |
| void LocalFrameView::UpdatePluginsTimerFired(TimerBase*) { |
| DCHECK(!IsInPerformLayout()); |
| for (unsigned i = 0; i < kMaxUpdatePluginsIterations; ++i) { |
| if (UpdatePlugins()) |
| return; |
| } |
| } |
| |
| void LocalFrameView::FlushAnyPendingPostLayoutTasks() { |
| DCHECK(!IsInPerformLayout()); |
| if (post_layout_tasks_timer_.IsActive()) |
| PerformPostLayoutTasks(); |
| if (update_plugins_timer_.IsActive()) { |
| update_plugins_timer_.Stop(); |
| UpdatePluginsTimerFired(nullptr); |
| } |
| } |
| |
| void LocalFrameView::ScheduleUpdatePluginsIfNecessary() { |
| DCHECK(!IsInPerformLayout()); |
| if (update_plugins_timer_.IsActive() || part_update_set_.IsEmpty()) |
| return; |
| update_plugins_timer_.StartOneShot(TimeDelta(), FROM_HERE); |
| } |
| |
| void LocalFrameView::PerformPostLayoutTasks() { |
| // FIXME: We can reach here, even when the page is not active! |
| // http/tests/inspector/elements/html-link-import.html and many other |
| // tests hit that case. |
| // We should DCHECK(isActive()); or at least return early if we can! |
| |
| // Always called before or after performLayout(), part of the highest-level |
| // layout() call. |
| DCHECK(!IsInPerformLayout()); |
| TRACE_EVENT0("blink,benchmark", "LocalFrameView::performPostLayoutTasks"); |
| |
| post_layout_tasks_timer_.Stop(); |
| |
| frame_->Selection().DidLayout(); |
| |
| DCHECK(frame_->GetDocument()); |
| |
| FontFaceSetDocument::DidLayout(*frame_->GetDocument()); |
| // Fire a fake a mouse move event to update hover state and mouse cursor, and |
| // send the right mouse out/over events. |
| frame_->GetEventHandler().DispatchFakeMouseMoveEventSoon( |
| MouseEventManager::FakeMouseMoveReason::kPerFrame); |
| |
| UpdateGeometriesIfNeeded(); |
| |
| // Plugins could have torn down the page inside updateGeometries(). |
| if (!GetLayoutView()) |
| return; |
| |
| ScheduleUpdatePluginsIfNecessary(); |
| |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) { |
| scrolling_coordinator->NotifyGeometryChanged(this); |
| } |
| |
| if (SnapCoordinator* snap_coordinator = |
| frame_->GetDocument()->GetSnapCoordinator()) |
| snap_coordinator->UpdateAllSnapContainerData(); |
| |
| SendResizeEventIfNeeded(); |
| } |
| |
| bool LocalFrameView::WasViewportResized() { |
| DCHECK(frame_); |
| auto* layout_view = GetLayoutView(); |
| if (!layout_view) |
| return false; |
| return (GetLayoutSize(kIncludeScrollbars) != last_viewport_size_ || |
| layout_view->StyleRef().Zoom() != last_zoom_factor_); |
| } |
| |
| void LocalFrameView::SendResizeEventIfNeeded() { |
| DCHECK(frame_); |
| |
| auto* layout_view = GetLayoutView(); |
| if (!layout_view || layout_view->GetDocument().Printing()) |
| return; |
| |
| if (!WasViewportResized()) |
| return; |
| |
| last_viewport_size_ = GetLayoutSize(kIncludeScrollbars); |
| last_zoom_factor_ = layout_view->StyleRef().Zoom(); |
| |
| if (RuntimeEnabledFeatures::VisualViewportAPIEnabled()) |
| frame_->GetDocument()->EnqueueVisualViewportResizeEvent(); |
| |
| frame_->GetDocument()->EnqueueResizeEvent(); |
| |
| if (frame_->IsMainFrame()) |
| probe::didResizeMainFrame(frame_.Get()); |
| } |
| |
| void LocalFrameView::PostLayoutTimerFired(TimerBase*) { |
| PerformPostLayoutTasks(); |
| } |
| |
| bool LocalFrameView::ShouldUseIntegerScrollOffset() const { |
| if (frame_->GetSettings() && |
| !frame_->GetSettings()->GetPreferCompositingToLCDTextEnabled()) |
| return true; |
| |
| return ScrollableArea::ShouldUseIntegerScrollOffset(); |
| } |
| |
| bool LocalFrameView::IsActive() const { |
| Page* page = GetFrame().GetPage(); |
| return page && page->GetFocusController().IsActive(); |
| } |
| |
| void LocalFrameView::InvalidatePaintForTickmarks() { |
| ScrollableArea* scrollable_area = LayoutViewportScrollableArea(); |
| if (!scrollable_area) |
| return; |
| if (Scrollbar* scrollbar = scrollable_area->VerticalScrollbar()) { |
| scrollbar->SetNeedsPaintInvalidation( |
| static_cast<ScrollbarPart>(~kThumbPart)); |
| } |
| } |
| |
| void LocalFrameView::GetTickmarks(Vector<IntRect>& tickmarks) const { |
| if (!tickmarks_.IsEmpty()) { |
| tickmarks = tickmarks_; |
| return; |
| } |
| tickmarks = |
| GetFrame().GetDocument()->Markers().LayoutRectsForTextMatchMarkers(); |
| } |
| |
| void LocalFrameView::SetInputEventsScaleForEmulation( |
| float content_scale_factor) { |
| input_events_scale_factor_for_emulation_ = content_scale_factor; |
| } |
| |
| float LocalFrameView::InputEventsScaleFactor() const { |
| float page_scale = frame_->GetPage()->GetVisualViewport().Scale(); |
| return page_scale * input_events_scale_factor_for_emulation_; |
| } |
| |
| bool LocalFrameView::ScrollbarsCanBeActive() const { |
| if (frame_->View() != this) |
| return false; |
| |
| return !!frame_->GetDocument(); |
| } |
| |
| void LocalFrameView::ScrollbarVisibilityChanged() { |
| UpdateScrollbarEnabledState(); |
| if (auto* layout_view = GetLayoutView()) |
| layout_view->ClearHitTestCache(); |
| } |
| |
| void LocalFrameView::ScrollbarFrameRectChanged() { |
| SetNeedsPaintPropertyUpdate(); |
| } |
| |
| IntRect LocalFrameView::ScrollableAreaBoundingBox() const { |
| auto* owner_layout_object = GetFrame().OwnerLayoutObject(); |
| if (!owner_layout_object) |
| return FrameRect(); |
| |
| LocalFrameView* local_root = GetFrame().LocalFrameRoot().View(); |
| return local_root->RootFrameToDocument(local_root->AbsoluteToRootFrame( |
| owner_layout_object->AbsoluteContentQuad(kTraverseDocumentBoundaries) |
| .EnclosingBoundingBox())); |
| } |
| |
| bool LocalFrameView::IsScrollable() const { |
| return GetScrollingReasons() == kScrollable; |
| } |
| |
| bool LocalFrameView::IsProgrammaticallyScrollable() { |
| return !in_update_scrollbars_; |
| } |
| |
| LocalFrameView::ScrollingReasons LocalFrameView::GetScrollingReasons() const { |
| // Check for: |
| // 1) If there an actual overflow. |
| // 2) display:none or visibility:hidden set to self or inherited. |
| // 3) overflow{-x,-y}: hidden; |
| // 4) scrolling: no; |
| |
| // Covers #1 |
| IntSize contents_size; |
| if (GetLayoutView()) |
| contents_size = GetLayoutView()->DocumentRect().Size(); |
| else |
| contents_size = ContentsSize(); |
| |
| IntSize visible_content_size = VisibleContentSize(); |
| if (contents_size.Height() <= visible_content_size.Height() && |
| contents_size.Width() <= visible_content_size.Width()) |
| return kNotScrollableNoOverflow; |
| |
| // Covers #2. |
| // FIXME: Do we need to fix this for OOPI? |
| HTMLFrameOwnerElement* owner = frame_->DeprecatedLocalOwner(); |
| if (owner && (!owner->GetLayoutObject() || |
| !owner->GetLayoutObject()->VisibleToHitTesting())) |
| return kNotScrollableNotVisible; |
| |
| // Cover #3 and #4. |
| ScrollbarMode horizontal_mode; |
| ScrollbarMode vertical_mode; |
| GetLayoutView()->CalculateScrollbarModes(horizontal_mode, vertical_mode); |
| if (horizontal_mode == kScrollbarAlwaysOff && |
| vertical_mode == kScrollbarAlwaysOff) |
| return kNotScrollableExplicitlyDisabled; |
| |
| return kScrollable; |
| } |
| |
| void LocalFrameView::UpdateParentScrollableAreaSet() { |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) |
| return; |
| |
| // That ensures that only inner frames are cached. |
| LocalFrameView* parent_frame_view = ParentFrameView(); |
| if (!parent_frame_view) |
| return; |
| |
| if (!IsScrollable()) { |
| parent_frame_view->RemoveScrollableArea(this); |
| return; |
| } |
| |
| parent_frame_view->AddScrollableArea(this); |
| } |
| |
| bool LocalFrameView::ShouldSuspendScrollAnimations() const { |
| return !frame_->GetDocument()->LoadEventFinished(); |
| } |
| |
| void LocalFrameView::ScrollbarStyleChanged() { |
| // FIXME: Why does this only apply to the main frame? |
| if (!frame_->IsMainFrame()) |
| return; |
| AdjustScrollbarOpacity(); |
| ContentsResized(); |
| UpdateScrollbars(); |
| PositionScrollbarLayers(); |
| } |
| |
| bool LocalFrameView::ScheduleAnimation() { |
| if (PlatformChromeClient* client = GetChromeClient()) { |
| client->ScheduleAnimation(this); |
| return true; |
| } |
| return false; |
| } |
| |
| void LocalFrameView::NotifyPageThatContentAreaWillPaint() const { |
| Page* page = frame_->GetPage(); |
| if (!page) |
| return; |
| |
| ContentAreaWillPaint(); |
| |
| if (!scrollable_areas_) |
| return; |
| |
| for (const auto& scrollable_area : *scrollable_areas_) { |
| if (!scrollable_area->ScrollbarsCanBeActive()) |
| continue; |
| |
| scrollable_area->ContentAreaWillPaint(); |
| } |
| } |
| |
| CompositorElementId LocalFrameView::GetCompositorElementId() const { |
| if (!RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| return CompositorElementIdFromUniqueObjectId( |
| unique_id_, CompositorElementIdNamespace::kScroll); |
| } else { |
| return PaintInvalidationCapableScrollableArea::GetCompositorElementId(); |
| } |
| } |
| |
| bool LocalFrameView::ScrollAnimatorEnabled() const { |
| return frame_->GetSettings() && |
| frame_->GetSettings()->GetScrollAnimatorEnabled(); |
| } |
| |
| void LocalFrameView::UpdateDocumentAnnotatedRegions() const { |
| Document* document = frame_->GetDocument(); |
| if (!document->HasAnnotatedRegions()) |
| return; |
| Vector<AnnotatedRegionValue> new_regions; |
| CollectAnnotatedRegions(*(document->GetLayoutBox()), new_regions); |
| if (new_regions == document->AnnotatedRegions()) |
| return; |
| document->SetAnnotatedRegions(new_regions); |
| |
| DCHECK(frame_->Client()); |
| frame_->Client()->AnnotatedRegionsChanged(); |
| } |
| |
| void LocalFrameView::DidAttachDocument() { |
| Page* page = frame_->GetPage(); |
| DCHECK(page); |
| |
| DCHECK(frame_->GetDocument()); |
| |
| if (frame_->IsMainFrame()) { |
| ScrollableArea& visual_viewport = frame_->GetPage()->GetVisualViewport(); |
| ScrollableArea* layout_viewport = LayoutViewportScrollableArea(); |
| DCHECK(layout_viewport); |
| |
| RootFrameViewport* root_frame_viewport = |
| RootFrameViewport::Create(visual_viewport, *layout_viewport); |
| viewport_scrollable_area_ = root_frame_viewport; |
| |
| page->GlobalRootScrollerController().InitializeViewportScrollCallback( |
| *root_frame_viewport); |
| } |
| } |
| |
| void LocalFrameView::UpdateScrollCorner() { |
| scoped_refptr<ComputedStyle> corner_style; |
| IntRect corner_rect = ScrollCornerRect(); |
| Document* doc = frame_->GetDocument(); |
| |
| if (doc && !corner_rect.IsEmpty()) { |
| // Try the <body> element first as a scroll corner source. |
| if (Element* body = doc->body()) { |
| if (LayoutObject* layout_object = body->GetLayoutObject()) { |
| corner_style = layout_object->GetUncachedPseudoStyle( |
| PseudoStyleRequest(kPseudoIdScrollbarCorner), |
| layout_object->Style()); |
| } |
| } |
| |
| if (!corner_style) { |
| // If the <body> didn't have a custom style, then the root element might. |
| if (Element* doc_element = doc->documentElement()) { |
| if (LayoutObject* layout_object = doc_element->GetLayoutObject()) { |
| corner_style = layout_object->GetUncachedPseudoStyle( |
| PseudoStyleRequest(kPseudoIdScrollbarCorner), |
| layout_object->Style()); |
| } |
| } |
| } |
| |
| if (!corner_style) { |
| // If we have an owning ipage/LocalFrame element, then it can set the |
| // custom scrollbar also. |
| auto* layout_object = frame_->OwnerLayoutObject(); |
| if (layout_object) { |
| corner_style = layout_object->GetUncachedPseudoStyle( |
| PseudoStyleRequest(kPseudoIdScrollbarCorner), |
| layout_object->Style()); |
| } |
| } |
| } |
| |
| if (corner_style) { |
| if (!scroll_corner_) |
| scroll_corner_ = LayoutScrollbarPart::CreateAnonymous(doc, this); |
| scroll_corner_->SetStyleWithWritingModeOfParent(std::move(corner_style)); |
| SetScrollCornerNeedsPaintInvalidation(); |
| } else if (scroll_corner_) { |
| scroll_corner_->Destroy(); |
| scroll_corner_ = nullptr; |
| } |
| } |
| |
| Color LocalFrameView::DocumentBackgroundColor() const { |
| // The LayoutView's background color is set in |
| // Document::inheritHtmlAndBodyElementStyles. Blend this with the base |
| // background color of the LocalFrameView. This should match the color drawn |
| // by ViewPainter::paintBoxDecorationBackground. |
| Color result = BaseBackgroundColor(); |
| auto* layout_view = GetLayoutView(); |
| if (layout_view) { |
| result = result.Blend( |
| layout_view->ResolveColor(GetCSSPropertyBackgroundColor())); |
| } |
| return result; |
| } |
| |
| void LocalFrameView::WillBeRemovedFromFrame() { |
| if (paint_artifact_compositor_) |
| paint_artifact_compositor_->WillBeRemovedFromFrame(); |
| } |
| |
| LocalFrameView* LocalFrameView::ParentFrameView() const { |
| if (!is_attached_) |
| return nullptr; |
| |
| Frame* parent_frame = frame_->Tree().Parent(); |
| if (parent_frame && parent_frame->IsLocalFrame()) |
| return ToLocalFrame(parent_frame)->View(); |
| |
| return nullptr; |
| } |
| |
| void LocalFrameView::DidChangeGlobalRootScroller() { |
| // Being the global root scroller will affect clipping size due to browser |
| // controls behavior so we need to update compositing based on updated clip |
| // geometry. |
| SetNeedsCompositingUpdate(kCompositingUpdateAfterGeometryChange); |
| SetNeedsPaintPropertyUpdate(); |
| |
| // Avoid drawing two sets of scrollbars when visual viewport provides |
| // scrollbars. |
| if (frame_->GetSettings() && frame_->GetSettings()->GetViewportEnabled()) |
| VisualViewportScrollbarsChanged(); |
| } |
| |
| // TODO(pdr): This logic is similar to adjustScrollbarExistence and the common |
| // logic should be factored into a helper. |
| void LocalFrameView::VisualViewportScrollbarsChanged() { |
| bool has_horizontal_scrollbar = HorizontalScrollbar(); |
| bool has_vertical_scrollbar = VerticalScrollbar(); |
| bool should_have_horizontal_scrollbar = false; |
| bool should_have_vertical_scrollbar = false; |
| ComputeScrollbarExistence(should_have_horizontal_scrollbar, |
| should_have_vertical_scrollbar, ContentsSize()); |
| scrollbar_manager_.SetHasHorizontalScrollbar( |
| should_have_horizontal_scrollbar); |
| scrollbar_manager_.SetHasVerticalScrollbar(should_have_vertical_scrollbar); |
| |
| if (has_horizontal_scrollbar != should_have_horizontal_scrollbar || |
| has_vertical_scrollbar != should_have_vertical_scrollbar) { |
| ScrollbarExistenceMaybeChanged(); |
| |
| if (!VisualViewportSuppliesScrollbars()) |
| UpdateScrollbarGeometry(); |
| } |
| |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| if (LayoutView* layout_view = GetLayoutView()) |
| layout_view->Layer()->ClearClipRects(); |
| } |
| } |
| |
| void LocalFrameView::UpdateGeometriesIfNeeded() { |
| if (!needs_update_geometries_) |
| return; |
| needs_update_geometries_ = false; |
| HeapVector<Member<EmbeddedContentView>> views; |
| ForAllChildViewsAndPlugins( |
| [&](EmbeddedContentView& view) { views.push_back(view); }); |
| |
| for (const auto& view : views) { |
| // Script or plugins could detach the frame so abort processing if that |
| // happens. |
| if (!GetLayoutView()) |
| break; |
| |
| view->UpdateGeometry(); |
| } |
| } |
| |
| void LocalFrameView::UpdateAllLifecyclePhases() { |
| GetFrame().LocalFrameRoot().View()->UpdateLifecyclePhasesInternal( |
| DocumentLifecycle::kPaintClean); |
| } |
| |
| bool LocalFrameView::UpdateLifecycleToPrePaintClean() { |
| if (RuntimeEnabledFeatures::SlimmingPaintV2Enabled()) { |
| return UpdateAllLifecyclePhasesExceptPaint(); |
| } else { |
| return GetFrame().LocalFrameRoot().View()->UpdateLifecyclePhasesInternal( |
| DocumentLifecycle::kPrePaintClean); |
| } |
| } |
| |
| // TODO(chrishtr): add a scrolling update lifecycle phase. |
| bool LocalFrameView::UpdateLifecycleToCompositingCleanPlusScrolling() { |
| if (RuntimeEnabledFeatures::SlimmingPaintV2Enabled()) { |
| return UpdateAllLifecyclePhasesExceptPaint(); |
| } else { |
| return GetFrame().LocalFrameRoot().View()->UpdateLifecyclePhasesInternal( |
| DocumentLifecycle::kCompositingClean); |
| } |
| } |
| |
| bool LocalFrameView::UpdateLifecycleToCompositingInputsClean() { |
| // When SPv2 is enabled, the standard compositing lifecycle steps do not |
| // exist; compositing is done after paint instead. |
| DCHECK(!RuntimeEnabledFeatures::SlimmingPaintV2Enabled()); |
| return GetFrame().LocalFrameRoot().View()->UpdateLifecyclePhasesInternal( |
| DocumentLifecycle::kCompositingInputsClean); |
| } |
| |
| bool LocalFrameView::UpdateAllLifecyclePhasesExceptPaint() { |
| return GetFrame().LocalFrameRoot().View()->UpdateLifecyclePhasesInternal( |
| DocumentLifecycle::kPrePaintClean); |
| } |
| |
| void LocalFrameView::UpdateLifecyclePhasesForPrinting() { |
| auto* local_frame_view_root = GetFrame().LocalFrameRoot().View(); |
| local_frame_view_root->UpdateLifecyclePhasesInternal( |
| DocumentLifecycle::kPrePaintClean); |
| |
| auto* detached_frame_view = this; |
| while (detached_frame_view->is_attached_ && |
| detached_frame_view != local_frame_view_root) |
| detached_frame_view = detached_frame_view->parent_.Get(); |
| |
| if (detached_frame_view == local_frame_view_root) |
| return; |
| DCHECK(!detached_frame_view->is_attached_); |
| |
| // We are printing a detached frame or a descendant of a detached frame which |
| // was not reached in some phases during during |local_frame_view_root-> |
| // UpdateLifecyclePhasesInternalnormal()|. We need the subtree to be ready for |
| // painting. |
| detached_frame_view->UpdateLifecyclePhasesInternal( |
| DocumentLifecycle::kPrePaintClean); |
| } |
| |
| bool LocalFrameView::UpdateLifecycleToLayoutClean() { |
| return GetFrame().LocalFrameRoot().View()->UpdateLifecyclePhasesInternal( |
| DocumentLifecycle::kLayoutClean); |
| } |
| |
| void LocalFrameView::ScheduleVisualUpdateForPaintInvalidationIfNeeded() { |
| LocalFrame& local_frame_root = GetFrame().LocalFrameRoot(); |
| if (local_frame_root.View()->current_update_lifecycle_phases_target_state_ < |
| DocumentLifecycle::kPrePaintClean || |
| Lifecycle().GetState() >= DocumentLifecycle::kPrePaintClean) { |
| // Schedule visual update to process the paint invalidation in the next |
| // cycle. |
| local_frame_root.ScheduleVisualUpdateUnlessThrottled(); |
| } |
| // Otherwise the paint invalidation will be handled in the pre-paint |
| // phase of this cycle. |
| } |
| |
| void LocalFrameView::NotifyResizeObservers() { |
| // Controller exists only if ResizeObserver was created. |
| if (!GetFrame().GetDocument()->GetResizeObserverController()) |
| return; |
| |
| ResizeObserverController& resize_controller = |
| frame_->GetDocument()->EnsureResizeObserverController(); |
| |
| DCHECK(Lifecycle().GetState() >= DocumentLifecycle::kLayoutClean); |
| |
| size_t min_depth = 0; |
| for (min_depth = resize_controller.GatherObservations(0); |
| min_depth != ResizeObserverController::kDepthBottom; |
| min_depth = resize_controller.GatherObservations(min_depth)) { |
| resize_controller.DeliverObservations(); |
| GetFrame().GetDocument()->UpdateStyleAndLayout(); |
| } |
| |
| if (resize_controller.SkippedObservations()) { |
| resize_controller.ClearObservations(); |
| ErrorEvent* error = ErrorEvent::Create( |
| "ResizeObserver loop limit exceeded", |
| SourceLocation::Capture(frame_->GetDocument()), nullptr); |
| frame_->GetDocument()->DispatchErrorEvent(error, kNotSharableCrossOrigin); |
| // Ensure notifications will get delivered in next cycle. |
| if (LocalFrameView* frame_view = frame_->View()) |
| frame_view->ScheduleAnimation(); |
| } |
| |
| DCHECK(!GetLayoutView()->NeedsLayout()); |
| } |
| |
| void LocalFrameView::DispatchEventsForPrintingOnAllFrames() { |
| DCHECK(frame_->IsMainFrame()); |
| for (Frame* current_frame = frame_; current_frame; |
| current_frame = current_frame->Tree().TraverseNext(frame_)) { |
| if (current_frame->IsLocalFrame()) |
| ToLocalFrame(current_frame)->GetDocument()->DispatchEventsForPrinting(); |
| } |
| } |
| |
| void LocalFrameView::SetupPrintContext() { |
| if (frame_->GetDocument()->Printing()) |
| return; |
| if (!print_context_) { |
| print_context_ = new PrintContext(frame_, /*use_printing_layout=*/true); |
| } |
| if (frame_->GetSettings()) |
| frame_->GetSettings()->SetShouldPrintBackgrounds(true); |
| bool is_us = DefaultLanguage() == "en-US"; |
| int width = is_us ? kLetterPortraitPageWidth : kA4PortraitPageWidth; |
| int height = is_us ? kLetterPortraitPageHeight : kA4PortraitPageHeight; |
| print_context_->BeginPrintMode(width, height); |
| print_context_->ComputePageRects(FloatSize(width, height)); |
| DispatchEventsForPrintingOnAllFrames(); |
| } |
| |
| void LocalFrameView::ClearPrintContext() { |
| if (!print_context_) |
| return; |
| print_context_->EndPrintMode(); |
| print_context_.Clear(); |
| } |
| |
| // TODO(leviw): We don't assert lifecycle information from documents in child |
| // WebPluginContainerImpls. |
| bool LocalFrameView::UpdateLifecyclePhasesInternal( |
| DocumentLifecycle::LifecycleState target_state) { |
| if (frame_->GetDocument() && |
| frame_->GetDocument()->Lifecycle().LifecyclePostponed()) |
| return false; |
| if (current_update_lifecycle_phases_target_state_ != |
| DocumentLifecycle::kUninitialized) { |
| NOTREACHED() |
| << "LocalFrameView::updateLifecyclePhasesInternal() reentrance"; |
| return false; |
| } |
| |
| // This must be called from the root frame, or a detached frame for printing, |
| // since it recurses down, not up. Otherwise the lifecycles of the frames |
| // might be out of sync. |
| DCHECK(frame_->IsLocalRoot() || !is_attached_); |
| |
| // Only the following target states are supported. |
| DCHECK(target_state == DocumentLifecycle::kLayoutClean || |
| target_state == DocumentLifecycle::kCompositingInputsClean || |
| target_state == DocumentLifecycle::kCompositingClean || |
| target_state == DocumentLifecycle::kPrePaintClean || |
| target_state == DocumentLifecycle::kPaintClean); |
| |
| if (!frame_->GetDocument()->IsActive()) |
| return Lifecycle().GetState() == target_state; |
| |
| AutoReset<DocumentLifecycle::LifecycleState> target_state_scope( |
| ¤t_update_lifecycle_phases_target_state_, target_state); |
| |
| if (ShouldThrottleRendering()) { |
| UpdateViewportIntersectionsForSubtree( |
| std::min(target_state, DocumentLifecycle::kCompositingClean)); |
| return Lifecycle().GetState() == target_state; |
| } |
| |
| if (RuntimeEnabledFeatures::PrintBrowserEnabled()) |
| SetupPrintContext(); |
| else |
| ClearPrintContext(); |
| |
| UpdateStyleAndLayoutIfNeededRecursive(); |
| DCHECK(Lifecycle().GetState() >= DocumentLifecycle::kLayoutClean); |
| |
| if (target_state == DocumentLifecycle::kLayoutClean) { |
| UpdateViewportIntersectionsForSubtree(target_state); |
| return Lifecycle().GetState() == target_state; |
| } |
| |
| AutoReset<bool> past_layout_lifecycle_update(&past_layout_lifecycle_update_, |
| true); |
| |
| // OOPIF local frame roots that are throttled can return now that layout |
| // is clean and intersection observations can be calculated. |
| if (ShouldThrottleRendering()) { |
| UpdateViewportIntersectionsForSubtree(target_state); |
| return Lifecycle().GetState() == target_state; |
| } |
| |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.PerformScrollAnchoringAdjustments(); |
| }); |
| |
| if (target_state == DocumentLifecycle::kPaintClean) { |
| ForAllNonThrottledLocalFrameViews( |
| [](LocalFrameView& frame_view) { frame_view.NotifyResizeObservers(); }); |
| |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) |
| NotifyFrameRectsChangedIfNeededRecursive(); |
| } |
| |
| if (auto* layout_view = GetLayoutView()) { |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.CheckDoesNotNeedLayout(); |
| frame_view.allows_layout_invalidation_after_layout_clean_ = false; |
| }); |
| |
| { |
| TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), |
| "SetLayerTreeId", TRACE_EVENT_SCOPE_THREAD, "data", |
| InspectorSetLayerTreeId::Data(frame_.Get())); |
| TRACE_EVENT1("devtools.timeline", "UpdateLayerTree", "data", |
| InspectorUpdateLayerTreeEvent::Data(frame_.Get())); |
| |
| if (!RuntimeEnabledFeatures::SlimmingPaintV2Enabled()) { |
| SCOPED_UMA_AND_UKM_TIMER("Blink.Compositing.UpdateTime", |
| UkmMetricNames::kCompositing); |
| layout_view->Compositor()->UpdateIfNeededRecursive(target_state); |
| } else { |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.GetLayoutView()->Layer()->UpdateDescendantDependentFlags(); |
| frame_view.GetLayoutView()->CommitPendingSelection(); |
| }); |
| } |
| |
| if (target_state >= DocumentLifecycle::kCompositingClean) { |
| if (!RuntimeEnabledFeatures::RootLayerScrollingEnabled()) |
| ScrollContentsIfNeededRecursive(); |
| |
| frame_->GetPage()->GlobalRootScrollerController().DidUpdateCompositing( |
| *this); |
| } |
| |
| if (target_state >= DocumentLifecycle::kPrePaintClean) { |
| if (!RuntimeEnabledFeatures::SlimmingPaintV2Enabled()) { |
| if (layout_view->Compositor()->InCompositingMode()) { |
| GetScrollingCoordinator()->UpdateAfterCompositingChangeIfNeeded( |
| this); |
| } |
| } |
| |
| UpdateCompositedSelectionIfNeeded(); |
| |
| // TODO(pdr): prePaint should be under the "Paint" devtools timeline |
| // step for slimming paint v2. |
| PrePaint(); |
| } |
| } |
| |
| if (target_state == DocumentLifecycle::kPaintClean) { |
| if (!frame_->GetDocument()->Printing() || |
| RuntimeEnabledFeatures::PrintBrowserEnabled()) |
| PaintTree(); |
| |
| if (RuntimeEnabledFeatures::SlimmingPaintV2Enabled() || |
| RuntimeEnabledFeatures::BlinkGenPropertyTreesEnabled()) { |
| base::Optional<CompositorElementIdSet> composited_element_ids = |
| CompositorElementIdSet(); |
| PushPaintArtifactToCompositor(composited_element_ids.value()); |
| // TODO(wkorman): Add a call to UpdateCompositorScrollAnimations here. |
| DocumentAnimations::UpdateAnimations(GetLayoutView()->GetDocument(), |
| DocumentLifecycle::kPaintClean, |
| composited_element_ids); |
| // Notify the controller that the artifact has been pushed and some |
| // lifecycle state can be freed (such as raster invalidations). |
| paint_controller_->FinishCycle(); |
| } |
| |
| DCHECK(!frame_->Selection().NeedsLayoutSelectionUpdate()); |
| DCHECK(ShouldThrottleRendering() || |
| (frame_->GetDocument()->Printing() && |
| Lifecycle().GetState() == DocumentLifecycle::kPrePaintClean) || |
| Lifecycle().GetState() == DocumentLifecycle::kPaintClean); |
| } |
| |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.CheckDoesNotNeedLayout(); |
| frame_view.allows_layout_invalidation_after_layout_clean_ = true; |
| }); |
| } |
| |
| { |
| TRACE_EVENT0("blink,benchmark", |
| "LocalFrameView::UpdateViewportIntersectionsForSubtree"); |
| SCOPED_UMA_AND_UKM_TIMER("Blink.IntersectionObservation.UpdateTime", |
| UkmMetricNames::kIntersectionObservation); |
| UpdateViewportIntersectionsForSubtree(target_state); |
| } |
| |
| return Lifecycle().GetState() == target_state; |
| } |
| |
| void LocalFrameView::EnqueueScrollAnchoringAdjustment( |
| ScrollableArea* scrollable_area) { |
| anchoring_adjustment_queue_.insert(scrollable_area); |
| } |
| |
| void LocalFrameView::DequeueScrollAnchoringAdjustment( |
| ScrollableArea* scrollable_area) { |
| anchoring_adjustment_queue_.erase(scrollable_area); |
| } |
| |
| void LocalFrameView::PerformScrollAnchoringAdjustments() { |
| // Adjust() will cause a scroll which could end up causing a layout and |
| // reentering this method. Copy and clear the queue so we don't modify it |
| // during iteration. |
| AnchoringAdjustmentQueue queue_copy = anchoring_adjustment_queue_; |
| anchoring_adjustment_queue_.clear(); |
| |
| for (WeakMember<ScrollableArea>& scroller : queue_copy) { |
| if (scroller) { |
| DCHECK(scroller->GetScrollAnchor()); |
| scroller->GetScrollAnchor()->Adjust(); |
| } |
| } |
| } |
| |
| void LocalFrameView::PrePaint() { |
| TRACE_EVENT0("blink,benchmark", "LocalFrameView::prePaint"); |
| |
| if (!paint_controller_) |
| paint_controller_ = PaintController::Create(); |
| |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.Lifecycle().AdvanceTo(DocumentLifecycle::kInPrePaint); |
| if (frame_view.CanThrottleRendering()) { |
| // This frame can be throttled but not throttled, meaning we are not in an |
| // AllowThrottlingScope. Now this frame may contain dirty paint flags, and |
| // we need to propagate the flags into the ancestor chain so that |
| // PrePaintTreeWalk can reach this frame. |
| frame_view.SetNeedsPaintPropertyUpdate(); |
| if (auto* owner = frame_view.GetFrame().OwnerLayoutObject()) |
| owner->SetMayNeedPaintInvalidation(); |
| } |
| }); |
| |
| { |
| SCOPED_UMA_AND_UKM_TIMER("Blink.PrePaint.UpdateTime", |
| UkmMetricNames::kPrePaint); |
| PrePaintTreeWalk().WalkTree(*this); |
| } |
| |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.Lifecycle().AdvanceTo(DocumentLifecycle::kPrePaintClean); |
| }); |
| } |
| |
| static void CollectDrawableLayersForLayerListRecursively( |
| GraphicsContext& context, |
| const GraphicsLayer* layer) { |
| DCHECK(RuntimeEnabledFeatures::BlinkGenPropertyTreesEnabled()); |
| |
| if (!layer || layer->Client().ShouldThrottleRendering()) |
| return; |
| |
| WebLayer* contents_layer = layer->ContentsLayer(); |
| if (layer->DrawsContent() || contents_layer) { |
| ScopedPaintChunkProperties scope(context.GetPaintController(), |
| layer->GetPropertyTreeState(), *layer, |
| DisplayItem::kForeignLayerWrapper); |
| |
| if (layer->DrawsContent()) { |
| // TODO(trchen): Currently the GraphicsLayer hierarchy is still built |
| // during CompositingUpdate, and we have to clear them here to ensure no |
| // extraneous layers are still attached. In future we will disable all |
| // those layer hierarchy code so we won't need this line. |
| layer->PlatformLayer()->RemoveAllChildren(); |
| RecordForeignLayer(context, *layer, DisplayItem::kForeignLayerWrapper, |
| layer->PlatformLayer(), |
| layer->GetOffsetFromTransformNode(), |
| RoundedIntSize(layer->Size())); |
| } |
| if (contents_layer) { |
| auto position = contents_layer->GetPosition(); |
| auto size = contents_layer->Bounds(); |
| RecordForeignLayer(context, *layer, |
| DisplayItem::kForeignLayerContentsWrapper, |
| contents_layer, |
| layer->GetOffsetFromTransformNode() + |
| FloatSize(position.x(), position.y()), |
| IntSize(size.width(), size.height())); |
| } |
| } |
| |
| DCHECK(!layer->ContentsClippingMaskLayer()); |
| for (const auto* child : layer->Children()) |
| CollectDrawableLayersForLayerListRecursively(context, child); |
| CollectDrawableLayersForLayerListRecursively(context, layer->MaskLayer()); |
| } |
| |
| void LocalFrameView::PaintTree() { |
| TRACE_EVENT0("blink,benchmark", "LocalFrameView::paintTree"); |
| SCOPED_UMA_AND_UKM_TIMER("Blink.Paint.UpdateTime", UkmMetricNames::kPaint); |
| |
| DCHECK(GetFrame() == GetPage()->MainFrame() || |
| (!GetFrame().Tree().Parent()->IsLocalFrame())); |
| |
| auto* layout_view = GetLayoutView(); |
| DCHECK(layout_view); |
| paint_frame_count_++; |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.Lifecycle().AdvanceTo(DocumentLifecycle::kInPaint); |
| }); |
| |
| if (RuntimeEnabledFeatures::SlimmingPaintV2Enabled()) { |
| if (GetLayoutView()->Layer()->NeedsRepaint()) { |
| GraphicsContext graphics_context(*paint_controller_); |
| if (RuntimeEnabledFeatures::PrintBrowserEnabled()) |
| graphics_context.SetPrinting(true); |
| |
| if (Settings* settings = frame_->GetSettings()) { |
| HighContrastSettings high_contrast_settings; |
| high_contrast_settings.mode = settings->GetHighContrastMode(); |
| high_contrast_settings.grayscale = settings->GetHighContrastGrayscale(); |
| high_contrast_settings.contrast = settings->GetHighContrastContrast(); |
| high_contrast_settings.image_policy = |
| settings->GetHighContrastImagePolicy(); |
| graphics_context.SetHighContrast(high_contrast_settings); |
| } |
| |
| PaintInternal(graphics_context, kGlobalPaintNormalPhase, |
| CullRect(LayoutRect::InfiniteIntRect())); |
| paint_controller_->CommitNewDisplayItems(); |
| } |
| } else { |
| // A null graphics layer can occur for painting of SVG images that are not |
| // parented into the main frame tree, or when the LocalFrameView is the main |
| // frame view of a page overlay. The page overlay is in the layer tree of |
| // the host page and will be painted during painting of the host page. |
| if (GraphicsLayer* root_graphics_layer = |
| layout_view->Compositor()->PaintRootGraphicsLayer()) |
| root_graphics_layer->PaintRecursively(); |
| |
| // TODO(sataya.m):Main frame doesn't create RootFrameViewport in some |
| // webkit_unit_tests (http://crbug.com/644788). |
| if (viewport_scrollable_area_) { |
| if (GraphicsLayer* layer_for_horizontal_scrollbar = |
| viewport_scrollable_area_->LayerForHorizontalScrollbar()) |
| layer_for_horizontal_scrollbar->PaintRecursively(); |
| if (GraphicsLayer* layer_for_vertical_scrollbar = |
| viewport_scrollable_area_->LayerForVerticalScrollbar()) |
| layer_for_vertical_scrollbar->PaintRecursively(); |
| if (GraphicsLayer* layer_for_scroll_corner = |
| viewport_scrollable_area_->LayerForScrollCorner()) |
| layer_for_scroll_corner->PaintRecursively(); |
| } |
| } |
| |
| if (RuntimeEnabledFeatures::BlinkGenPropertyTreesEnabled()) { |
| GraphicsContext context(*paint_controller_); |
| CollectDrawableLayersForLayerListRecursively( |
| context, layout_view->Compositor()->PaintRootGraphicsLayer()); |
| if (viewport_scrollable_area_) { |
| CollectDrawableLayersForLayerListRecursively( |
| context, viewport_scrollable_area_->LayerForHorizontalScrollbar()); |
| CollectDrawableLayersForLayerListRecursively( |
| context, viewport_scrollable_area_->LayerForVerticalScrollbar()); |
| CollectDrawableLayersForLayerListRecursively( |
| context, viewport_scrollable_area_->LayerForScrollCorner()); |
| } |
| paint_controller_->CommitNewDisplayItems(); |
| } |
| |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.Lifecycle().AdvanceTo(DocumentLifecycle::kPaintClean); |
| if (auto* layout_view = frame_view.GetLayoutView()) |
| layout_view->Layer()->ClearNeedsRepaintRecursively(); |
| }); |
| } |
| |
| void LocalFrameView::PushPaintArtifactToCompositor( |
| CompositorElementIdSet& composited_element_ids) { |
| TRACE_EVENT0("blink", "LocalFrameView::pushPaintArtifactToCompositor"); |
| |
| DCHECK(RuntimeEnabledFeatures::SlimmingPaintV2Enabled() || |
| RuntimeEnabledFeatures::BlinkGenPropertyTreesEnabled()); |
| |
| if (!frame_->GetSettings()->GetAcceleratedCompositingEnabled()) |
| return; |
| |
| Page* page = GetFrame().GetPage(); |
| if (!page) |
| return; |
| |
| if (!paint_artifact_compositor_) { |
| paint_artifact_compositor_ = |
| PaintArtifactCompositor::Create(WTF::BindRepeating( |
| &ScrollingCoordinator::DidScroll, |
| // The layer being scrolled is destroyed before the |
| // ScrollingCoordinator. |
| WrapWeakPersistent(page->GetScrollingCoordinator()))); |
| page->GetChromeClient().AttachRootLayer( |
| paint_artifact_compositor_->GetWebLayer(), &GetFrame()); |
| } |
| |
| SCOPED_UMA_AND_UKM_TIMER("Blink.Compositing.UpdateTime", |
| UkmMetricNames::kCompositing); |
| |
| paint_artifact_compositor_->Update(paint_controller_->GetPaintArtifact(), |
| composited_element_ids); |
| } |
| |
| std::unique_ptr<JSONObject> LocalFrameView::CompositedLayersAsJSON( |
| LayerTreeFlags flags) { |
| return GetFrame() |
| .LocalFrameRoot() |
| .View() |
| ->paint_artifact_compositor_->LayersAsJSON(flags); |
| } |
| |
| void LocalFrameView::UpdateStyleAndLayoutIfNeededRecursive() { |
| SCOPED_UMA_AND_UKM_TIMER("Blink.StyleAndLayout.UpdateTime", |
| UkmMetricNames::kStyleAndLayout); |
| UpdateStyleAndLayoutIfNeededRecursiveInternal(); |
| } |
| |
| void LocalFrameView::UpdateStyleAndLayoutIfNeededRecursiveInternal() { |
| if (ShouldThrottleRendering() || !frame_->GetDocument()->IsActive()) |
| return; |
| |
| ScopedFrameBlamer frame_blamer(frame_); |
| TRACE_EVENT0("blink,benchmark", |
| "LocalFrameView::updateStyleAndLayoutIfNeededRecursive"); |
| |
| // We have to crawl our entire subtree looking for any FrameViews that need |
| // layout and make sure they are up to date. |
| // Mac actually tests for intersection with the dirty region and tries not to |
| // update layout for frames that are outside the dirty region. Not only does |
| // this seem pointless (since those frames will have set a zero timer to |
| // layout anyway), but it is also incorrect, since if two frames overlap, the |
| // first could be excluded from the dirty region but then become included |
| // later by the second frame adding rects to the dirty region when it lays |
| // out. |
| |
| frame_->GetDocument()->UpdateStyleAndLayoutTree(); |
| |
| // Update style for all embedded SVG documents underneath this frame, so |
| // that intrinsic size computation for any embedded objects has up-to-date |
| // information before layout. |
| ForAllChildLocalFrameViews([](LocalFrameView& view) { |
| Document& document = *view.GetFrame().GetDocument(); |
| if (document.IsSVGDocument()) |
| document.UpdateStyleAndLayoutTree(); |
| }); |
| |
| CHECK(!ShouldThrottleRendering()); |
| CHECK(frame_->GetDocument()->IsActive()); |
| CHECK(!nested_layout_count_); |
| |
| if (NeedsLayout()) |
| UpdateLayout(); |
| |
| CheckDoesNotNeedLayout(); |
| |
| // WebView plugins need to update regardless of whether the |
| // LayoutEmbeddedObject that owns them needed layout. |
| // TODO(leviw): This currently runs the entire lifecycle on plugin WebViews. |
| // We should have a way to only run these other Documents to the same |
| // lifecycle stage as this frame. |
| for (const auto& plugin : plugins_) { |
| plugin->UpdateAllLifecyclePhases(); |
| } |
| CheckDoesNotNeedLayout(); |
| |
| // FIXME: Calling layout() shouldn't trigger script execution or have any |
| // observable effects on the frame tree but we're not quite there yet. |
| HeapVector<Member<LocalFrameView>> frame_views; |
| for (Frame* child = frame_->Tree().FirstChild(); child; |
| child = child->Tree().NextSibling()) { |
| if (!child->IsLocalFrame()) |
| continue; |
| if (LocalFrameView* view = ToLocalFrame(child)->View()) |
| frame_views.push_back(view); |
| } |
| |
| for (const auto& frame_view : frame_views) |
| frame_view->UpdateStyleAndLayoutIfNeededRecursiveInternal(); |
| |
| // These asserts ensure that parent frames are clean, when child frames |
| // finished updating layout and style. |
| CheckDoesNotNeedLayout(); |
| #if DCHECK_IS_ON() |
| frame_->GetDocument()->GetLayoutView()->AssertLaidOut(); |
| #endif |
| |
| UpdateGeometriesIfNeeded(); |
| |
| if (Lifecycle().GetState() < DocumentLifecycle::kLayoutClean) |
| Lifecycle().AdvanceTo(DocumentLifecycle::kLayoutClean); |
| |
| // Ensure that we become visually non-empty eventually. |
| // TODO(esprehn): This should check isRenderingReady() instead. |
| if (GetFrame().GetDocument()->HasFinishedParsing() && |
| GetFrame().Loader().StateMachine()->CommittedFirstRealDocumentLoad()) |
| is_visually_non_empty_ = true; |
| |
| GetFrame().Selection().UpdateStyleAndLayoutIfNeeded(); |
| GetFrame().GetPage()->GetDragCaret().UpdateStyleAndLayoutIfNeeded(); |
| } |
| |
| void LocalFrameView::EnableAutoSizeMode(const IntSize& min_size, |
| const IntSize& max_size) { |
| if (!auto_size_info_) |
| auto_size_info_ = FrameViewAutoSizeInfo::Create(this); |
| |
| auto_size_info_->ConfigureAutoSizeMode(min_size, max_size); |
| SetLayoutSizeFixedToFrameSize(true); |
| SetNeedsLayout(); |
| ScheduleRelayout(); |
| } |
| |
| void LocalFrameView::DisableAutoSizeMode() { |
| if (!auto_size_info_) |
| return; |
| |
| SetLayoutSizeFixedToFrameSize(false); |
| SetNeedsLayout(); |
| ScheduleRelayout(); |
| |
| // Since autosize mode forces the scrollbar mode, change them to being auto. |
| SetAutosizeScrollbarModes(kScrollbarAuto, kScrollbarAuto); |
| SetScrollbarModes(kScrollbarAuto, kScrollbarAuto); |
| auto_size_info_.Clear(); |
| } |
| |
| void LocalFrameView::ForceLayoutForPagination( |
| const FloatSize& page_size, |
| const FloatSize& original_page_size, |
| float maximum_shrink_factor) { |
| // Dumping externalRepresentation(m_frame->layoutObject()).ascii() is a good |
| // trick to see the state of things before and after the layout |
| if (LayoutView* layout_view = this->GetLayoutView()) { |
| float page_logical_width = layout_view->Style()->IsHorizontalWritingMode() |
| ? page_size.Width() |
| : page_size.Height(); |
| float page_logical_height = layout_view->Style()->IsHorizontalWritingMode() |
| ? page_size.Height() |
| : page_size.Width(); |
| |
| LayoutUnit floored_page_logical_width = |
| static_cast<LayoutUnit>(page_logical_width); |
| LayoutUnit floored_page_logical_height = |
| static_cast<LayoutUnit>(page_logical_height); |
| layout_view->SetLogicalWidth(floored_page_logical_width); |
| layout_view->SetPageLogicalHeight(floored_page_logical_height); |
| layout_view->SetNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation( |
| LayoutInvalidationReason::kPrintingChanged); |
| UpdateLayout(); |
| |
| // If we don't fit in the given page width, we'll lay out again. If we don't |
| // fit in the page width when shrunk, we will lay out at maximum shrink and |
| // clip extra content. |
| // FIXME: We are assuming a shrink-to-fit printing implementation. A |
| // cropping implementation should not do this! |
| bool horizontal_writing_mode = |
| layout_view->Style()->IsHorizontalWritingMode(); |
| const LayoutRect& document_rect = LayoutRect(layout_view->DocumentRect()); |
| LayoutUnit doc_logical_width = horizontal_writing_mode |
| ? document_rect.Width() |
| : document_rect.Height(); |
| if (doc_logical_width > page_logical_width) { |
| FloatSize expected_page_size( |
| std::min<float>(document_rect.Width().ToFloat(), |
| page_size.Width() * maximum_shrink_factor), |
| std::min<float>(document_rect.Height().ToFloat(), |
| page_size.Height() * maximum_shrink_factor)); |
| FloatSize max_page_size = frame_->ResizePageRectsKeepingRatio( |
| FloatSize(original_page_size.Width(), original_page_size.Height()), |
| expected_page_size); |
| page_logical_width = horizontal_writing_mode ? max_page_size.Width() |
| : max_page_size.Height(); |
| page_logical_height = horizontal_writing_mode ? max_page_size.Height() |
| : max_page_size.Width(); |
| |
| floored_page_logical_width = static_cast<LayoutUnit>(page_logical_width); |
| floored_page_logical_height = |
| static_cast<LayoutUnit>(page_logical_height); |
| layout_view->SetLogicalWidth(floored_page_logical_width); |
| layout_view->SetPageLogicalHeight(floored_page_logical_height); |
| layout_view->SetNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation( |
| LayoutInvalidationReason::kPrintingChanged); |
| UpdateLayout(); |
| |
| const LayoutRect& updated_document_rect = |
| LayoutRect(layout_view->DocumentRect()); |
| LayoutUnit doc_logical_height = horizontal_writing_mode |
| ? updated_document_rect.Height() |
| : updated_document_rect.Width(); |
| LayoutUnit doc_logical_top = horizontal_writing_mode |
| ? updated_document_rect.Y() |
| : updated_document_rect.X(); |
| LayoutUnit doc_logical_right = horizontal_writing_mode |
| ? updated_document_rect.MaxX() |
| : updated_document_rect.MaxY(); |
| LayoutUnit clipped_logical_left; |
| if (!layout_view->Style()->IsLeftToRightDirection()) { |
| clipped_logical_left = |
| LayoutUnit(doc_logical_right - page_logical_width); |
| } |
| LayoutRect overflow(clipped_logical_left, doc_logical_top, |
| LayoutUnit(page_logical_width), doc_logical_height); |
| |
| if (!horizontal_writing_mode) |
| overflow = overflow.TransposedRect(); |
| AdjustViewSizeAndLayout(); |
| // This is how we clip in case we overflow again. |
| layout_view->ClearLayoutOverflow(); |
| layout_view->AddLayoutOverflow(overflow); |
| return; |
| } |
| } |
| |
| if (TextAutosizer* text_autosizer = frame_->GetDocument()->GetTextAutosizer()) |
| text_autosizer->UpdatePageInfo(); |
| AdjustViewSizeAndLayout(); |
| } |
| |
| IntRect LocalFrameView::ConvertFromLayoutObject( |
| const LayoutObject& layout_object, |
| const IntRect& layout_object_rect) const { |
| // Convert from page ("absolute") to LocalFrameView coordinates. |
| LayoutRect rect = EnclosingLayoutRect( |
| layout_object.LocalToAbsoluteQuad(FloatRect(layout_object_rect)) |
| .BoundingBox()); |
| rect.Move(LayoutSize(-GetScrollOffset())); |
| return PixelSnappedIntRect(rect); |
| } |
| |
| IntRect LocalFrameView::ConvertToLayoutObject(const LayoutObject& layout_object, |
| const IntRect& frame_rect) const { |
| IntRect rect_in_content = FrameToContents(frame_rect); |
| |
| // Convert from LocalFrameView coords into page ("absolute") coordinates. |
| rect_in_content.Move(ScrollOffsetInt()); |
| |
| // FIXME: we don't have a way to map an absolute rect down to a local quad, so |
| // just move the rect for now. |
| rect_in_content.SetLocation(RoundedIntPoint(layout_object.AbsoluteToLocal( |
| rect_in_content.Location(), kUseTransforms))); |
| return rect_in_content; |
| } |
| |
| IntPoint LocalFrameView::ConvertFromLayoutObject( |
| const LayoutObject& layout_object, |
| const IntPoint& layout_object_point) const { |
| return RoundedIntPoint( |
| ConvertFromLayoutObject(layout_object, LayoutPoint(layout_object_point))); |
| } |
| |
| IntPoint LocalFrameView::ConvertToLayoutObject( |
| const LayoutObject& layout_object, |
| const IntPoint& frame_point) const { |
| return RoundedIntPoint( |
| ConvertToLayoutObject(layout_object, LayoutPoint(frame_point))); |
| } |
| |
| LayoutPoint LocalFrameView::ConvertFromLayoutObject( |
| const LayoutObject& layout_object, |
| const LayoutPoint& layout_object_point) const { |
| LayoutPoint point(layout_object.LocalToAbsolute( |
| FloatPoint(layout_object_point), kUseTransforms)); |
| |
| // Convert from page ("absolute") to LocalFrameView coordinates. |
| point.Move(-LayoutSize(GetScrollOffset())); |
| return point; |
| } |
| |
| LayoutPoint LocalFrameView::ConvertToLayoutObject( |
| const LayoutObject& layout_object, |
| const LayoutPoint& frame_point) const { |
| return LayoutPoint( |
| ConvertToLayoutObject(layout_object, FloatPoint(frame_point))); |
| } |
| |
| FloatPoint LocalFrameView::ConvertToLayoutObject( |
| const LayoutObject& layout_object, |
| const FloatPoint& frame_point) const { |
| FloatPoint point = frame_point; |
| |
| // Convert from LocalFrameView coords into page ("absolute") coordinates. |
| point += FloatSize(ScrollX(), ScrollY()); |
| |
| return layout_object.AbsoluteToLocal(point, kUseTransforms); |
| } |
| |
| IntPoint LocalFrameView::ConvertSelfToChild(const EmbeddedContentView& child, |
| const IntPoint& point) const { |
| IntPoint new_point = point; |
| new_point = FrameToContents(point); |
| new_point.MoveBy(-child.FrameRect().Location()); |
| return new_point; |
| } |
| |
| IntRect LocalFrameView::AbsoluteToRootFrame( |
| const IntRect& absolute_rect) const { |
| IntRect root_frame_rect(absolute_rect); |
| root_frame_rect.Move(-ScrollOffsetInt()); |
| return ConvertToRootFrame(root_frame_rect); |
| } |
| |
| IntPoint LocalFrameView::AbsoluteToRootFrame( |
| const IntPoint& absolute_point) const { |
| IntPoint point_in_frame(absolute_point); |
| // With RLS turned on, this will be a no-op. |
| point_in_frame -= ScrollOffsetInt(); |
| return ConvertToRootFrame(point_in_frame); |
| } |
| |
| LayoutRect LocalFrameView::AbsoluteToRootFrame( |
| const LayoutRect& layout_rect) const { |
| LayoutPoint point_in_frame(layout_rect.Location()); |
| // With RLS turned on, this will be a no-op. |
| point_in_frame -= LayoutSize(ScrollOffsetInt()); |
| return LayoutRect(ConvertToRootFrame(point_in_frame), layout_rect.Size()); |
| } |
| |
| IntRect LocalFrameView::RootFrameToDocument(const IntRect& rect_in_root_frame) { |
| IntPoint offset = RootFrameToDocument(rect_in_root_frame.Location()); |
| IntRect local_rect = rect_in_root_frame; |
| local_rect.SetLocation(offset); |
| return local_rect; |
| } |
| |
| IntPoint LocalFrameView::RootFrameToDocument( |
| const IntPoint& point_in_root_frame) { |
| return FlooredIntPoint(RootFrameToDocument(FloatPoint(point_in_root_frame))); |
| } |
| |
| FloatPoint LocalFrameView::RootFrameToDocument( |
| const FloatPoint& point_in_root_frame) { |
| FloatPoint local_frame = ConvertFromRootFrame(point_in_root_frame); |
| return local_frame + LayoutViewportScrollableArea()->GetScrollOffset(); |
| } |
| |
| LayoutPoint LocalFrameView::RootFrameToAbsolute( |
| const LayoutPoint& point_in_root_frame) const { |
| LayoutPoint local_frame = ConvertFromRootFrame(point_in_root_frame); |
| // With RLS turned on, this will be a no-op. |
| return local_frame + LayoutSize(GetScrollOffset()); |
| } |
| |
| IntPoint LocalFrameView::RootFrameToAbsolute( |
| const IntPoint& point_in_root_frame) const { |
| IntPoint local_frame = ConvertFromRootFrame(point_in_root_frame); |
| // With RLS turned on, this will be a no-op. |
| return local_frame + FlooredIntSize(GetScrollOffset()); |
| } |
| |
| IntRect LocalFrameView::RootFrameToAbsolute( |
| const IntRect& rect_in_root_frame) const { |
| IntRect absolute_rect = ConvertFromRootFrame(rect_in_root_frame); |
| absolute_rect.Move(FlooredIntSize(GetScrollOffset())); |
| return absolute_rect; |
| } |
| |
| DoublePoint LocalFrameView::DocumentToAbsolute( |
| const DoublePoint& point_in_document) const { |
| return point_in_document - |
| GetLayoutView()->GetScrollableArea()->GetScrollOffset(); |
| } |
| |
| FloatPoint LocalFrameView::DocumentToAbsolute( |
| const FloatPoint& point_in_document) const { |
| return FloatPoint(DocumentToAbsolute(DoublePoint(point_in_document))); |
| } |
| |
| LayoutPoint LocalFrameView::DocumentToAbsolute( |
| const LayoutPoint& point_in_document) const { |
| return point_in_document - |
| LayoutSize(GetLayoutView()->GetScrollableArea()->GetScrollOffset()); |
| } |
| |
| LayoutRect LocalFrameView::DocumentToAbsolute( |
| const LayoutRect& rect_in_document) const { |
| // With RLS turned off, this will be a no-op. |
| return LayoutRect(DocumentToAbsolute(rect_in_document.Location()), |
| rect_in_document.Size()); |
| } |
| |
| LayoutPoint LocalFrameView::AbsoluteToDocument( |
| const LayoutPoint& point_in_absolute) const { |
| return point_in_absolute + |
| LayoutSize(GetLayoutView()->GetScrollableArea()->GetScrollOffset()); |
| } |
| |
| LayoutRect LocalFrameView::AbsoluteToDocument( |
| const LayoutRect& rect_in_absolute) const { |
| return LayoutRect(AbsoluteToDocument(rect_in_absolute.Location()), |
| rect_in_absolute.Size()); |
| } |
| |
| IntRect LocalFrameView::ConvertToContainingEmbeddedContentView( |
| const IntRect& local_rect) const { |
| if (LocalFrameView* parent = ParentFrameView()) { |
| auto* layout_object = frame_->OwnerLayoutObject(); |
| if (!layout_object) |
| return local_rect; |
| |
| IntRect rect(local_rect); |
| // Add borders and padding |
| rect.Move( |
| (layout_object->BorderLeft() + layout_object->PaddingLeft()).ToInt(), |
| (layout_object->BorderTop() + layout_object->PaddingTop()).ToInt()); |
| return parent->ConvertFromLayoutObject(*layout_object, rect); |
| } |
| |
| return local_rect; |
| } |
| |
| IntRect LocalFrameView::ConvertFromContainingEmbeddedContentView( |
| const IntRect& parent_rect) const { |
| if (LocalFrameView* parent = ParentFrameView()) { |
| IntRect local_rect = parent_rect; |
| local_rect.SetLocation( |
| parent->ConvertSelfToChild(*this, local_rect.Location())); |
| return local_rect; |
| } |
| |
| return parent_rect; |
| } |
| |
| LayoutPoint LocalFrameView::ConvertToContainingEmbeddedContentView( |
| const LayoutPoint& local_point) const { |
| if (LocalFrameView* parent = ParentFrameView()) { |
| auto* layout_object = frame_->OwnerLayoutObject(); |
| if (!layout_object) |
| return local_point; |
| |
| LayoutPoint point(local_point); |
| |
| // Add borders and padding |
| point.Move((layout_object->BorderLeft() + layout_object->PaddingLeft()), |
| (layout_object->BorderTop() + layout_object->PaddingTop())); |
| return parent->ConvertFromLayoutObject(*layout_object, point); |
| } |
| |
| return local_point; |
| } |
| |
| LayoutPoint LocalFrameView::ConvertFromContainingEmbeddedContentView( |
| const LayoutPoint& parent_point) const { |
| return LayoutPoint( |
| ConvertFromContainingEmbeddedContentView(DoublePoint(parent_point))); |
| } |
| |
| FloatPoint LocalFrameView::ConvertFromContainingEmbeddedContentView( |
| const FloatPoint& parent_point) const { |
| return FloatPoint( |
| ConvertFromContainingEmbeddedContentView(DoublePoint(parent_point))); |
| } |
| |
| DoublePoint LocalFrameView::ConvertFromContainingEmbeddedContentView( |
| const DoublePoint& parent_point) const { |
| if (LocalFrameView* parent = ParentFrameView()) { |
| // Get our layoutObject in the parent view |
| auto* layout_object = frame_->OwnerLayoutObject(); |
| if (!layout_object) |
| return parent_point; |
| |
| DoublePoint point = DoublePoint(parent->ConvertToLayoutObject( |
| *layout_object, FloatPoint(parent_point))); |
| // Subtract borders and padding |
| point.Move( |
| (-layout_object->BorderLeft() - layout_object->PaddingLeft()) |
| .ToDouble(), |
| (-layout_object->BorderTop() - layout_object->PaddingTop()).ToDouble()); |
| return point; |
| } |
| |
| return parent_point; |
| } |
| |
| IntPoint LocalFrameView::ConvertToContainingEmbeddedContentView( |
| const IntPoint& local_point) const { |
| return RoundedIntPoint( |
| ConvertToContainingEmbeddedContentView(LayoutPoint(local_point))); |
| } |
| |
| IntPoint LocalFrameView::ConvertFromContainingEmbeddedContentView( |
| const IntPoint& parent_point) const { |
| return RoundedIntPoint( |
| ConvertFromContainingEmbeddedContentView(DoublePoint(parent_point))); |
| } |
| |
| void LocalFrameView::SetInitialTracksPaintInvalidationsForTesting( |
| bool track_paint_invalidations) { |
| g_initial_track_all_paint_invalidations = track_paint_invalidations; |
| } |
| |
| void LocalFrameView::SetTracksPaintInvalidations( |
| bool track_paint_invalidations) { |
| if (track_paint_invalidations == IsTrackingPaintInvalidations()) |
| return; |
| |
| // Ensure the document is up-to-date before tracking invalidations. |
| UpdateAllLifecyclePhases(); |
| |
| for (Frame* frame = &frame_->Tree().Top(); frame; |
| frame = frame->Tree().TraverseNext()) { |
| if (!frame->IsLocalFrame()) |
| continue; |
| if (auto* layout_view = ToLocalFrame(frame)->ContentLayoutObject()) { |
| layout_view->GetFrameView()->tracked_object_paint_invalidations_ = |
| base::WrapUnique(track_paint_invalidations |
| ? new Vector<ObjectPaintInvalidation> |
| : nullptr); |
| if (RuntimeEnabledFeatures::SlimmingPaintV2Enabled()) { |
| if (!paint_controller_) |
| paint_controller_ = PaintController::Create(); |
| paint_controller_->SetTracksRasterInvalidations( |
| track_paint_invalidations); |
| if (paint_artifact_compositor_) { |
| paint_artifact_compositor_->SetTracksRasterInvalidations( |
| track_paint_invalidations); |
| } |
| } else { |
| layout_view->Compositor()->UpdateTrackingRasterInvalidations(); |
| } |
| } |
| } |
| |
| TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("blink.invalidation"), |
| "LocalFrameView::setTracksPaintInvalidations", |
| TRACE_EVENT_SCOPE_GLOBAL, "enabled", |
| track_paint_invalidations); |
| } |
| |
| void LocalFrameView::TrackObjectPaintInvalidation( |
| const DisplayItemClient& client, |
| PaintInvalidationReason reason) { |
| if (!tracked_object_paint_invalidations_) |
| return; |
| |
| ObjectPaintInvalidation invalidation = {client.DebugName(), reason}; |
| tracked_object_paint_invalidations_->push_back(invalidation); |
| } |
| |
| std::unique_ptr<JSONArray> |
| LocalFrameView::TrackedObjectPaintInvalidationsAsJSON() const { |
| if (!tracked_object_paint_invalidations_) |
| return nullptr; |
| |
| std::unique_ptr<JSONArray> result = JSONArray::Create(); |
| for (Frame* frame = &frame_->Tree().Top(); frame; |
| frame = frame->Tree().TraverseNext()) { |
| if (!frame->IsLocalFrame()) |
| continue; |
| if (auto* layout_view = ToLocalFrame(frame)->ContentLayoutObject()) { |
| if (!layout_view->GetFrameView()->tracked_object_paint_invalidations_) |
| continue; |
| for (const auto& item : |
| *layout_view->GetFrameView()->tracked_object_paint_invalidations_) { |
| std::unique_ptr<JSONObject> item_json = JSONObject::Create(); |
| item_json->SetString("object", item.name); |
| item_json->SetString("reason", |
| PaintInvalidationReasonToString(item.reason)); |
| result->PushObject(std::move(item_json)); |
| } |
| } |
| } |
| return result; |
| } |
| |
| void LocalFrameView::AddResizerArea(LayoutBox& resizer_box) { |
| if (!resizer_areas_) |
| resizer_areas_ = std::make_unique<ResizerAreaSet>(); |
| resizer_areas_->insert(&resizer_box); |
| } |
| |
| void LocalFrameView::RemoveResizerArea(LayoutBox& resizer_box) { |
| if (!resizer_areas_) |
| return; |
| |
| ResizerAreaSet::iterator it = resizer_areas_->find(&resizer_box); |
| if (it != resizer_areas_->end()) |
| resizer_areas_->erase(it); |
| } |
| |
| bool LocalFrameView::FrameIsScrollableDidChange() { |
| DCHECK(GetFrame().IsLocalRoot()); |
| return GetScrollingContext()->WasScrollable() != |
| LayoutViewportScrollableArea()->IsScrollable(); |
| } |
| |
| void LocalFrameView::ClearFrameIsScrollableDidChange() { |
| GetScrollingContext()->SetWasScrollable(GetFrame() |
| .LocalFrameRoot() |
| .View() |
| ->LayoutViewportScrollableArea() |
| ->IsScrollable()); |
| } |
| |
| void LocalFrameView::ScrollableAreasDidChange() { |
| // Layout may update scrollable area bounding boxes. It also sets the same |
| // dirty flag making this one redundant (See |
| // |ScrollingCoordinator::notifyGeometryChanged|). |
| // So if layout is expected, ignore this call allowing scrolling coordinator |
| // to be notified post-layout to recompute gesture regions. |
| // TODO(wjmaclean): It would be nice to move the !NeedsLayout() check from |
| // here to SetScrollGestureRegionIsDirty(), but at present doing so breaks |
| // layout tests. This suggests that there is something that wants to set the |
| // dirty bit when layout is needed, and won't re-try setting the bit after |
| // layout has completed - it would be nice to find that and fix it. |
| if (!NeedsLayout()) |
| GetScrollingContext()->SetScrollGestureRegionIsDirty(true); |
| } |
| |
| void LocalFrameView::AddScrollableArea(ScrollableArea* scrollable_area) { |
| DCHECK(scrollable_area); |
| if (!scrollable_areas_) |
| scrollable_areas_ = new ScrollableAreaSet; |
| scrollable_areas_->insert(scrollable_area); |
| |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) { |
| ScrollableAreasDidChange(); |
| } |
| } |
| |
| void LocalFrameView::RemoveScrollableArea(ScrollableArea* scrollable_area) { |
| if (!scrollable_areas_) |
| return; |
| scrollable_areas_->erase(scrollable_area); |
| |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) { |
| ScrollableAreasDidChange(); |
| } |
| } |
| |
| void LocalFrameView::AddAnimatingScrollableArea( |
| ScrollableArea* scrollable_area) { |
| DCHECK(scrollable_area); |
| if (!animating_scrollable_areas_) |
| animating_scrollable_areas_ = new ScrollableAreaSet; |
| animating_scrollable_areas_->insert(scrollable_area); |
| } |
| |
| void LocalFrameView::RemoveAnimatingScrollableArea( |
| ScrollableArea* scrollable_area) { |
| if (!animating_scrollable_areas_) |
| return; |
| animating_scrollable_areas_->erase(scrollable_area); |
| } |
| |
| void LocalFrameView::AttachToLayout() { |
| // TODO(crbug.com/729196): Trace why LocalFrameView::DetachFromLayout crashes. |
| CHECK(!is_attached_); |
| if (frame_->GetDocument()) |
| CHECK_NE(Lifecycle().GetState(), DocumentLifecycle::kStopping); |
| is_attached_ = true; |
| parent_ = ParentFrameView(); |
| if (!parent_) { |
| Frame* parent_frame = frame_->Tree().Parent(); |
| CHECK(parent_frame); |
| CHECK(parent_frame->IsLocalFrame()); |
| CHECK(parent_frame->View()); |
| } |
| CHECK(parent_); |
| if (parent_->IsVisible()) |
| SetParentVisible(true); |
| UpdateParentScrollableAreaSet(); |
| SetupRenderThrottling(); |
| subtree_throttled_ = ParentFrameView()->CanThrottleRendering(); |
| |
| // We may have updated paint properties in detached frame subtree for |
| // printing (see UpdateLifecyclePhasesForPrinting()). The paint properties |
| // may change after the frame is attached. |
| SetSubtreeNeedsPaintPropertyUpdate(); |
| } |
| |
| void LocalFrameView::DetachFromLayout() { |
| // TODO(crbug.com/729196): Trace why LocalFrameView::DetachFromLayout crashes. |
| CHECK(is_attached_); |
| LocalFrameView* parent = ParentFrameView(); |
| if (!parent) { |
| Frame* parent_frame = frame_->Tree().Parent(); |
| CHECK(parent_frame); |
| CHECK(parent_frame->IsLocalFrame()); |
| CHECK(parent_frame->View()); |
| } |
| CHECK(parent == parent_); |
| if (!RuntimeEnabledFeatures::RootLayerScrollingEnabled()) |
| parent->RemoveScrollableArea(this); |
| SetParentVisible(false); |
| is_attached_ = false; |
| |
| // We may need update paint properties in detached frame subtree for printing. |
| // See UpdateLifecyclePhasesForPrinting(). |
| SetSubtreeNeedsPaintPropertyUpdate(); |
| } |
| |
| void LocalFrameView::AddPlugin(WebPluginContainerImpl* plugin) { |
| DCHECK(!plugins_.Contains(plugin)); |
| plugins_.insert(plugin); |
| } |
| |
| void LocalFrameView::RemoveScrollbar(Scrollbar* scrollbar) { |
| DCHECK(scrollbars_.Contains(scrollbar)); |
| scrollbars_.erase(scrollbar); |
| } |
| |
| void LocalFrameView::AddScrollbar(Scrollbar* scrollbar) { |
| DCHECK(!scrollbars_.Contains(scrollbar)); |
| scrollbars_.insert(scrollbar); |
| } |
| |
| bool LocalFrameView::VisualViewportSuppliesScrollbars() { |
| // On desktop, we always use the layout viewport's scrollbars. |
| if (!frame_->GetSettings() || !frame_->GetSettings()->GetViewportEnabled() || |
| !frame_->GetDocument() || !frame_->GetPage()) |
| return false; |
| |
| const TopDocumentRootScrollerController& controller = |
| frame_->GetPage()->GlobalRootScrollerController(); |
| |
| if (!LayoutViewportScrollableArea()) |
| return false; |
| |
| return RootScrollerUtil::ScrollableAreaForRootScroller( |
| controller.GlobalRootScroller()) == LayoutViewportScrollableArea(); |
| } |
| |
| AXObjectCache* LocalFrameView::ExistingAXObjectCache() const { |
| if (GetFrame().GetDocument()) |
| return GetFrame().GetDocument()->ExistingAXObjectCache(); |
| return nullptr; |
| } |
| |
| void LocalFrameView::SetCursor(const Cursor& cursor) { |
| Page* page = GetFrame().GetPage(); |
| if (!page || frame_->GetEventHandler().IsMousePositionUnknown()) |
| return; |
| page->GetChromeClient().SetCursor(cursor, frame_); |
| } |
| |
| void LocalFrameView::FrameRectsChanged() { |
| TRACE_EVENT0("blink", "LocalFrameView::frameRectsChanged"); |
| if (LayoutSizeFixedToFrameSize()) |
| SetLayoutSizeInternal(Size()); |
| |
| ForAllChildViewsAndPlugins([](EmbeddedContentView& embedded_content_view) { |
| embedded_content_view.FrameRectsChanged(); |
| }); |
| |
| GetFrame().Client()->FrameRectsChanged(FrameRect()); |
| } |
| |
| void LocalFrameView::SetLayoutSizeInternal(const IntSize& size) { |
| if (layout_size_ == size) |
| return; |
| |
| layout_size_ = size; |
| ContentsResized(); |
| } |
| |
| void LocalFrameView::DidAddScrollbar(Scrollbar& scrollbar, |
| ScrollbarOrientation orientation) { |
| ScrollableArea::DidAddScrollbar(scrollbar, orientation); |
| } |
| |
| PaintLayer* LocalFrameView::Layer() const { |
| auto* layout_view = GetLayoutView(); |
| if (!layout_view || !layout_view->Compositor()) |
| return nullptr; |
| |
| return layout_view->Compositor()->RootLayer(); |
| } |
| |
| IntSize LocalFrameView::MaximumScrollOffsetInt() const { |
| // Make the same calculation as in CC's LayerImpl::MaxScrollOffset() |
| // FIXME: We probably shouldn't be storing the bounds in a float. |
| // crbug.com/422331. |
| IntSize visible_size = VisibleContentSize(kExcludeScrollbars); |
| IntSize content_bounds = ContentsSize(); |
| |
| Page* page = frame_->GetPage(); |
| DCHECK(page); |
| |
| // We need to perform this const_cast since maximumScrollOffsetInt is a const |
| // method but we can't make layoutViewportScrollableArea const since it can |
| // return |this|. Once root-layer-scrolls ships layoutViewportScrollableArea |
| // can be made const. |
| const ScrollableArea* layout_viewport = |
| const_cast<LocalFrameView*>(this)->LayoutViewportScrollableArea(); |
| TopDocumentRootScrollerController& controller = |
| page->GlobalRootScrollerController(); |
| if (layout_viewport == controller.RootScrollerArea()) |
| visible_size = controller.RootScrollerVisibleArea(); |
| |
| IntSize maximum_offset = |
| ToIntSize(-ScrollOrigin() + (content_bounds - visible_size)); |
| return maximum_offset.ExpandedTo(MinimumScrollOffsetInt()); |
| } |
| |
| void LocalFrameView::SetScrollbarModes(ScrollbarMode horizontal_mode, |
| ScrollbarMode vertical_mode) { |
| bool needs_update = false; |
| |
| // If the page's overflow setting has disabled scrolling, do not allow |
| // anything to override that setting, http://crbug.com/426447 |
| LayoutObject* viewport = ViewportLayoutObject(); |
| if (viewport && !ShouldIgnoreOverflowHidden()) { |
| if (viewport->Style()->OverflowX() == EOverflow::kHidden) |
| horizontal_mode = kScrollbarAlwaysOff; |
| if (viewport->Style()->OverflowY() == EOverflow::kHidden) |
| vertical_mode = kScrollbarAlwaysOff; |
| } |
| |
| if (horizontal_mode != horizontal_scrollbar_mode_) { |
| horizontal_scrollbar_mode_ = horizontal_mode; |
| needs_update = true; |
| } |
| |
| if (vertical_mode != vertical_scrollbar_mode_) { |
| vertical_scrollbar_mode_ = vertical_mode; |
| needs_update = true; |
| } |
| |
| if (!needs_update) |
| return; |
| |
| UpdateScrollbars(); |
| |
| if (GetScrollingCoordinator()) |
| GetScrollingCoordinator()->UpdateUserInputScrollable(this); |
| } |
| |
| ScrollbarMode LocalFrameView::EffectiveHorizontalScrollbarMode() const { |
| // If we're autosizing, override the current scrollbar mode to whatever the |
| // frame autosizer specifies. |
| if (AutosizeHorizontalScrollbarMode() != kScrollbarAuto) |
| return AutosizeHorizontalScrollbarMode(); |
| |
| return horizontal_scrollbar_mode_; |
| } |
| |
| ScrollbarMode LocalFrameView::EffectiveVerticalScrollbarMode() const { |
| // If we're autosizing, override the current scrollbar mode to whatever the |
| // frame autosizer specifies. |
| if (AutosizeVerticalScrollbarMode() != kScrollbarAuto) |
| return AutosizeVerticalScrollbarMode(); |
| |
| return vertical_scrollbar_mode_; |
| } |
| |
| IntSize LocalFrameView::VisibleContentSize( |
| IncludeScrollbarsInRect scrollbar_inclusion) const { |
| return scrollbar_inclusion == kExcludeScrollbars ? ExcludeScrollbars(Size()) |
| : Size(); |
| } |
| |
| IntRect LocalFrameView::VisibleContentRect( |
| IncludeScrollbarsInRect scrollbar_inclusion) const { |
| return IntRect(IntPoint(FlooredIntSize(scroll_offset_)), |
| VisibleContentSize(scrollbar_inclusion)); |
| } |
| |
| LayoutRect LocalFrameView::VisibleScrollSnapportRect() const { |
| const ComputedStyle* style = GetLayoutBox()->Style(); |
| LayoutRect visible_content_rect = LayoutRect( |
| FloatPoint(scroll_offset_), VisibleContentSize(kExcludeScrollbars)); |
| LayoutRectOutsets padding( |
| MinimumValueForLength(style->ScrollPaddingTop(), |
| visible_content_rect.Height()), |
| MinimumValueForLength(style->ScrollPaddingRight(), |
| visible_content_rect.Width()), |
| MinimumValueForLength(style->ScrollPaddingBottom(), |
| visible_content_rect.Height()), |
| MinimumValueForLength(style->ScrollPaddingLeft(), |
| visible_content_rect.Width())); |
| visible_content_rect.Contract(padding); |
| return visible_content_rect; |
| } |
| |
| IntSize LocalFrameView::ContentsSize() const { |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) |
| return Size(); |
| return layout_overflow_size_; |
| } |
| |
| void LocalFrameView::ClipPaintRect(FloatRect* paint_rect) const { |
| // Paint the whole rect if "mainFrameClipsContent" is false, meaning that |
| // WebPreferences::record_whole_document is true. |
| if (!frame_->GetSettings()->GetMainFrameClipsContent()) |
| return; |
| |
| paint_rect->Intersect( |
| GetPage()->GetChromeClient().VisibleContentRectForPainting().value_or( |
| VisibleContentRect())); |
| } |
| |
| IntSize LocalFrameView::MinimumScrollOffsetInt() const { |
| return ToIntSize(-ScrollOrigin()); |
| } |
| |
| void LocalFrameView::AdjustScrollbarOpacity() { |
| if (HorizontalScrollbar() && LayerForHorizontalScrollbar()) { |
| bool is_opaque_scrollbar = !HorizontalScrollbar()->IsOverlayScrollbar(); |
| LayerForHorizontalScrollbar()->SetContentsOpaque(is_opaque_scrollbar); |
| } |
| if (VerticalScrollbar() && LayerForVerticalScrollbar()) { |
| bool is_opaque_scrollbar = !VerticalScrollbar()->IsOverlayScrollbar(); |
| LayerForVerticalScrollbar()->SetContentsOpaque(is_opaque_scrollbar); |
| } |
| } |
| |
| int LocalFrameView::ScrollSize(ScrollbarOrientation orientation) const { |
| Scrollbar* scrollbar = |
| ((orientation == kHorizontalScrollbar) ? HorizontalScrollbar() |
| : VerticalScrollbar()); |
| |
| // If no scrollbars are present, the content may still be scrollable. |
| if (!scrollbar) { |
| IntSize scroll_size = ContentsSize() - VisibleContentSize(); |
| scroll_size.ClampNegativeToZero(); |
| return orientation == kHorizontalScrollbar ? scroll_size.Width() |
| : scroll_size.Height(); |
| } |
| |
| return scrollbar->TotalSize() - scrollbar->VisibleSize(); |
| } |
| |
| void LocalFrameView::UpdateScrollOffset(const ScrollOffset& offset, |
| ScrollType scroll_type) { |
| ScrollOffset scroll_delta = offset - scroll_offset_; |
| if (scroll_delta.IsZero()) |
| return; |
| |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| // Don't scroll the LocalFrameView! |
| NOTREACHED(); |
| } |
| |
| scroll_offset_ = offset; |
| |
| if (!ScrollbarsSuppressed()) |
| pending_scroll_delta_ += scroll_delta; |
| |
| UpdateLayersAndCompositingAfterScrollIfNeeded(); |
| |
| Document* document = frame_->GetDocument(); |
| document->EnqueueScrollEventForNode(document); |
| |
| GetLayoutView()->DispatchFakeMouseMoveEventSoon(GetFrame().GetEventHandler()); |
| |
| if (scroll_type == kUserScroll || scroll_type == kCompositorScroll) { |
| Page* page = GetFrame().GetPage(); |
| if (page) |
| page->GetChromeClient().ClearToolTip(*frame_); |
| } |
| |
| auto* layout_view = GetLayoutView(); |
| if (layout_view) { |
| if (layout_view->UsesCompositing()) |
| layout_view->Compositor()->FrameViewDidScroll(); |
| layout_view->ClearHitTestCache(); |
| } |
| |
| did_scroll_timer_.StartOneShot(kResourcePriorityUpdateDelayAfterScroll, |
| FROM_HERE); |
| |
| if (AXObjectCache* cache = frame_->GetDocument()->ExistingAXObjectCache()) |
| cache->HandleScrollPositionChanged(this); |
| |
| GetFrame().Loader().SaveScrollState(); |
| DidChangeScrollOffset(); |
| |
| if (scroll_type == kCompositorScroll || scroll_type == kUserScroll) { |
| if (DocumentLoader* document_loader = frame_->Loader().GetDocumentLoader()) |
| document_loader->GetInitialScrollState().was_scrolled_by_user = true; |
| } |
| |
| if (IsExplicitScrollType(scroll_type)) { |
| if (scroll_type != kCompositorScroll) |
| ShowOverlayScrollbars(); |
| ClearFragmentAnchor(); |
| ClearScrollAnchor(); |
| } |
| } |
| |
| void LocalFrameView::DidChangeScrollOffset() { |
| GetFrame().Client()->DidChangeScrollOffset(); |
| if (GetFrame().IsMainFrame()) |
| GetFrame().GetPage()->GetChromeClient().MainFrameScrollOffsetChanged(); |
| } |
| |
| void LocalFrameView::ClearScrollAnchor() { |
| if (!RuntimeEnabledFeatures::ScrollAnchoringEnabled()) |
| return; |
| scroll_anchor_.Clear(); |
| } |
| |
| bool LocalFrameView::HasOverlayScrollbars() const { |
| return (HorizontalScrollbar() && |
| HorizontalScrollbar()->IsOverlayScrollbar()) || |
| (VerticalScrollbar() && VerticalScrollbar()->IsOverlayScrollbar()); |
| } |
| |
| void LocalFrameView::ComputeScrollbarExistence( |
| bool& new_has_horizontal_scrollbar, |
| bool& new_has_vertical_scrollbar, |
| const IntSize& doc_size, |
| ComputeScrollbarExistenceOption option) { |
| if ((frame_->GetSettings() && frame_->GetSettings()->GetHideScrollbars()) || |
| VisualViewportSuppliesScrollbars()) { |
| new_has_horizontal_scrollbar = false; |
| new_has_vertical_scrollbar = false; |
| return; |
| } |
| |
| bool has_horizontal_scrollbar = HorizontalScrollbar(); |
| bool has_vertical_scrollbar = VerticalScrollbar(); |
| |
| new_has_horizontal_scrollbar = has_horizontal_scrollbar; |
| new_has_vertical_scrollbar = has_vertical_scrollbar; |
| |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) |
| return; |
| |
| ScrollbarMode h_scroll = EffectiveHorizontalScrollbarMode(); |
| ScrollbarMode v_scroll = EffectiveVerticalScrollbarMode(); |
| |
| if (h_scroll != kScrollbarAuto) |
| new_has_horizontal_scrollbar = (h_scroll == kScrollbarAlwaysOn); |
| if (v_scroll != kScrollbarAuto) |
| new_has_vertical_scrollbar = (v_scroll == kScrollbarAlwaysOn); |
| |
| if (scrollbars_suppressed_ || |
| (h_scroll != kScrollbarAuto && v_scroll != kScrollbarAuto)) |
| return; |
| |
| if (h_scroll == kScrollbarAuto) |
| new_has_horizontal_scrollbar = doc_size.Width() > VisibleWidth(); |
| if (v_scroll == kScrollbarAuto) |
| new_has_vertical_scrollbar = doc_size.Height() > VisibleHeight(); |
| |
| if (HasOverlayScrollbars()) |
| return; |
| |
| IntSize full_visible_size = VisibleContentSize(kIncludeScrollbars); |
| |
| bool attempt_to_remove_scrollbars = |
| (option == kFirstPass && doc_size.Width() <= full_visible_size.Width() && |
| doc_size.Height() <= full_visible_size.Height()); |
| if (attempt_to_remove_scrollbars) { |
| if (h_scroll == kScrollbarAuto) |
| new_has_horizontal_scrollbar = false; |
| if (v_scroll == kScrollbarAuto) |
| new_has_vertical_scrollbar = false; |
| } |
| } |
| |
| void LocalFrameView::UpdateScrollbarEnabledState() { |
| bool force_disabled = |
| GetPageScrollbarTheme().ShouldDisableInvisibleScrollbars() && |
| ScrollbarsHiddenIfOverlay(); |
| |
| if (HorizontalScrollbar()) { |
| HorizontalScrollbar()->SetEnabled(ContentsWidth() > VisibleWidth() && |
| !force_disabled); |
| } |
| if (VerticalScrollbar()) { |
| VerticalScrollbar()->SetEnabled(ContentsHeight() > VisibleHeight() && |
| !force_disabled); |
| } |
| } |
| |
| void LocalFrameView::UpdateScrollbarGeometry() { |
| UpdateScrollbarEnabledState(); |
| if (HorizontalScrollbar()) { |
| int thickness = HorizontalScrollbar()->ScrollbarThickness(); |
| IntRect old_rect(HorizontalScrollbar()->FrameRect()); |
| IntRect h_bar_rect( |
| (ShouldPlaceVerticalScrollbarOnLeft() && VerticalScrollbar()) |
| ? VerticalScrollbar()->Width() |
| : 0, |
| Height() - thickness, |
| Width() - (VerticalScrollbar() ? VerticalScrollbar()->Width() : 0), |
| thickness); |
| HorizontalScrollbar()->SetFrameRect(h_bar_rect); |
| if (old_rect != HorizontalScrollbar()->FrameRect()) |
| SetScrollbarNeedsPaintInvalidation(kHorizontalScrollbar); |
| |
| HorizontalScrollbar()->SetProportion(VisibleWidth(), ContentsWidth()); |
| HorizontalScrollbar()->OffsetDidChange(); |
| } |
| |
| if (VerticalScrollbar()) { |
| int thickness = VerticalScrollbar()->ScrollbarThickness(); |
| IntRect old_rect(VerticalScrollbar()->FrameRect()); |
| IntRect v_bar_rect( |
| ShouldPlaceVerticalScrollbarOnLeft() ? 0 : (Width() - thickness), 0, |
| thickness, |
| Height() - |
| (HorizontalScrollbar() ? HorizontalScrollbar()->Height() : 0)); |
| VerticalScrollbar()->SetFrameRect(v_bar_rect); |
| if (old_rect != VerticalScrollbar()->FrameRect()) |
| SetScrollbarNeedsPaintInvalidation(kVerticalScrollbar); |
| |
| VerticalScrollbar()->SetProportion(VisibleHeight(), ContentsHeight()); |
| VerticalScrollbar()->OffsetDidChange(); |
| } |
| } |
| |
| bool LocalFrameView::AdjustScrollbarExistence( |
| ComputeScrollbarExistenceOption option) { |
| DCHECK(in_update_scrollbars_); |
| |
| // If we came in here with the view already needing a layout, then go ahead |
| // and do that first. (This will be the common case, e.g., when the page |
| // changes due to window resizing for example). This layout will not re-enter |
| // updateScrollbars and does not count towards our max layout pass total. |
| if (!scrollbars_suppressed_) |
| ScrollbarExistenceMaybeChanged(); |
| |
| bool has_horizontal_scrollbar = HorizontalScrollbar(); |
| bool has_vertical_scrollbar = VerticalScrollbar(); |
| |
| bool new_has_horizontal_scrollbar = false; |
| bool new_has_vertical_scrollbar = false; |
| ComputeScrollbarExistence(new_has_horizontal_scrollbar, |
| new_has_vertical_scrollbar, ContentsSize(), option); |
| |
| bool scrollbar_existence_changed = |
| has_horizontal_scrollbar != new_has_horizontal_scrollbar || |
| has_vertical_scrollbar != new_has_vertical_scrollbar; |
| if (!scrollbar_existence_changed) |
| return false; |
| |
| scrollbar_manager_.SetHasHorizontalScrollbar(new_has_horizontal_scrollbar); |
| scrollbar_manager_.SetHasVerticalScrollbar(new_has_vertical_scrollbar); |
| |
| if (scrollbars_suppressed_) |
| return true; |
| |
| Element* custom_scrollbar_element = nullptr; |
| bool uses_overlay_scrollbars = |
| GetPageScrollbarTheme().UsesOverlayScrollbars() && |
| !ShouldUseCustomScrollbars(custom_scrollbar_element); |
| |
| if (!uses_overlay_scrollbars) |
| SetNeedsLayout(); |
| |
| ScrollbarExistenceMaybeChanged(); |
| return true; |
| } |
| |
| bool LocalFrameView::NeedsScrollbarReconstruction() const { |
| // We have no scrollbar to reconstruct. |
| if (!HorizontalScrollbar() && !VerticalScrollbar()) |
| return false; |
| |
| Element* style_source = nullptr; |
| bool needs_custom = ShouldUseCustomScrollbars(style_source); |
| |
| Scrollbar* scrollbars[] = {HorizontalScrollbar(), VerticalScrollbar()}; |
| |
| for (Scrollbar* scrollbar : scrollbars) { |
| if (!scrollbar) |
| continue; |
| |
| // We have a native scrollbar that should be custom, or vice versa. |
| if (scrollbar->IsCustomScrollbar() != needs_custom) |
| return true; |
| |
| if (needs_custom) { |
| DCHECK(scrollbar->IsCustomScrollbar()); |
| // We have a custom scrollbar with a stale m_owner. |
| if (ToLayoutScrollbar(scrollbar)->StyleSource() != |
| style_source->GetLayoutObject()) |
| return true; |
| |
| // Should use custom scrollbar and nothing should change. |
| continue; |
| } |
| |
| // Check if native scrollbar should change. |
| Page* page = frame_->GetPage(); |
| DCHECK(page); |
| ScrollbarTheme* current_theme = &page->GetScrollbarTheme(); |
| |
| if (current_theme != &scrollbar->GetTheme()) |
| return true; |
| } |
| return false; |
| } |
| |
| bool LocalFrameView::ShouldIgnoreOverflowHidden() const { |
| return frame_->GetSettings()->GetIgnoreMainFrameOverflowHiddenQuirk() && |
| frame_->IsMainFrame(); |
| } |
| |
| void LocalFrameView::UpdateScrollbarsIfNeeded() { |
| if (needs_scrollbars_update_ || NeedsScrollbarReconstruction() || |
| ScrollOriginChanged()) |
| UpdateScrollbars(); |
| } |
| |
| void LocalFrameView::UpdateScrollbars() { |
| needs_scrollbars_update_ = false; |
| |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) |
| return; |
| |
| SetNeedsPaintPropertyUpdate(); |
| |
| // Avoid drawing two sets of scrollbars when visual viewport is enabled. |
| if (VisualViewportSuppliesScrollbars()) { |
| if (scrollbar_manager_.HasHorizontalScrollbar() || |
| scrollbar_manager_.HasVerticalScrollbar()) { |
| scrollbar_manager_.SetHasHorizontalScrollbar(false); |
| scrollbar_manager_.SetHasVerticalScrollbar(false); |
| ScrollbarExistenceMaybeChanged(); |
| } |
| AdjustScrollOffsetFromUpdateScrollbars(); |
| return; |
| } |
| |
| if (in_update_scrollbars_) |
| return; |
| InUpdateScrollbarsScope in_update_scrollbars_scope(this); |
| |
| bool scrollbar_existence_changed = false; |
| |
| if (NeedsScrollbarReconstruction()) { |
| scrollbar_manager_.SetHasHorizontalScrollbar(false); |
| scrollbar_manager_.SetHasVerticalScrollbar(false); |
| scrollbar_existence_changed = true; |
| } |
| |
| int max_update_scrollbars_pass = |
| HasOverlayScrollbars() || scrollbars_suppressed_ ? 1 : 3; |
| for (int update_scrollbars_pass = 0; |
| update_scrollbars_pass < max_update_scrollbars_pass; |
| update_scrollbars_pass++) { |
| if (!AdjustScrollbarExistence(update_scrollbars_pass ? kIncremental |
| : kFirstPass)) |
| break; |
| scrollbar_existence_changed = true; |
| } |
| |
| UpdateScrollbarGeometry(); |
| |
| if (scrollbar_existence_changed) { |
| // FIXME: Is frameRectsChanged really necessary here? Have any frame rects |
| // changed? |
| FrameRectsChanged(); |
| PositionScrollbarLayers(); |
| UpdateScrollCorner(); |
| } |
| |
| AdjustScrollOffsetFromUpdateScrollbars(); |
| } |
| |
| void LocalFrameView::AdjustScrollOffsetFromUpdateScrollbars() { |
| ScrollOffset clamped = ClampScrollOffset(GetScrollOffset()); |
| if (clamped != GetScrollOffset() || ScrollOriginChanged()) |
| SetScrollOffset(clamped, kClampingScroll); |
| } |
| |
| ScrollableArea* LocalFrameView::ScrollableAreaWithElementId( |
| const CompositorElementId& id) { |
| // Check for the layout viewport, which may not be in scrollable_areas_ if it |
| // is styled overflow: hidden. (Other overflow: hidden elements won't have |
| // composited scrolling layers per crbug.com/784053, so we don't have to worry |
| // about them.) |
| ScrollableArea* viewport = LayoutViewportScrollableArea(); |
| if (id == viewport->GetCompositorElementId()) |
| return viewport; |
| |
| if (scrollable_areas_) { |
| // This requires iterating over all scrollable areas. We may want to store a |
| // map of ElementId to ScrollableArea if this is an issue for performance. |
| for (ScrollableArea* scrollable_area : *scrollable_areas_) { |
| if (id == scrollable_area->GetCompositorElementId()) |
| return scrollable_area; |
| } |
| } |
| return nullptr; |
| } |
| |
| void LocalFrameView::ScrollRectToVisibleInRemoteParent( |
| const LayoutRect& rect_to_scroll, |
| const WebScrollIntoViewParams& params) { |
| DCHECK(GetFrame().IsLocalRoot() && !GetFrame().IsMainFrame() && |
| safe_to_propagate_scroll_to_parent_); |
| LayoutRect new_rect = AbsoluteToRootFrame(rect_to_scroll); |
| GetFrame().Client()->ScrollRectToVisibleInParentFrame( |
| WebRect(new_rect.X().ToInt(), new_rect.Y().ToInt(), |
| new_rect.Width().ToInt(), new_rect.Height().ToInt()), |
| params); |
| } |
| |
| void LocalFrameView::NotifyFrameRectsChangedIfNeeded() { |
| if (root_layer_did_scroll_) { |
| root_layer_did_scroll_ = false; |
| FrameRectsChanged(); |
| } |
| } |
| |
| void LocalFrameView::ScrollContentsIfNeeded() { |
| if (pending_scroll_delta_.IsZero()) |
| return; |
| ScrollOffset scroll_delta = pending_scroll_delta_; |
| pending_scroll_delta_ = ScrollOffset(); |
| // FIXME: Change scrollContents() to take DoubleSize. crbug.com/414283. |
| ScrollContents(FlooredIntSize(scroll_delta)); |
| } |
| |
| void LocalFrameView::ScrollContents(const IntSize& scroll_delta) { |
| PlatformChromeClient* client = GetChromeClient(); |
| if (!client) |
| return; |
| |
| TRACE_EVENT0("blink", "LocalFrameView::scrollContents"); |
| |
| if (!ScrollContentsFastPath(-scroll_delta)) |
| ScrollContentsSlowPath(); |
| |
| if (!RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| // Need to update scroll translation property. |
| SetNeedsPaintPropertyUpdate(); |
| } |
| |
| // This call will move children with native FrameViews (plugins) and |
| // invalidate them as well. |
| FrameRectsChanged(); |
| } |
| |
| FloatPoint LocalFrameView::ContentsToFrame( |
| const FloatPoint& point_in_content_space) const { |
| return point_in_content_space - GetScrollOffset(); |
| } |
| |
| LayoutPoint LocalFrameView::ContentsToFrame( |
| const LayoutPoint& point_in_content_space) const { |
| return point_in_content_space - LayoutSize(GetScrollOffset()); |
| } |
| |
| IntPoint LocalFrameView::ContentsToFrame( |
| const IntPoint& point_in_content_space) const { |
| return point_in_content_space - ScrollOffsetInt(); |
| } |
| |
| IntRect LocalFrameView::ContentsToFrame( |
| const IntRect& rect_in_content_space) const { |
| return IntRect(ContentsToFrame(rect_in_content_space.Location()), |
| rect_in_content_space.Size()); |
| } |
| |
| FloatPoint LocalFrameView::FrameToContents( |
| const FloatPoint& point_in_frame) const { |
| return point_in_frame + GetScrollOffset(); |
| } |
| |
| LayoutPoint LocalFrameView::FrameToContents( |
| const LayoutPoint& point_in_frame) const { |
| return point_in_frame + LayoutSize(GetScrollOffset()); |
| } |
| |
| IntPoint LocalFrameView::FrameToContents(const IntPoint& point_in_frame) const { |
| return point_in_frame + ScrollOffsetInt(); |
| } |
| |
| IntRect LocalFrameView::FrameToContents(const IntRect& rect_in_frame) const { |
| return IntRect(FrameToContents(rect_in_frame.Location()), |
| rect_in_frame.Size()); |
| } |
| |
| LayoutPoint LocalFrameView::RootFrameToContents( |
| const LayoutPoint& point_in_root_frame) const { |
| LayoutPoint frame_point = ConvertFromRootFrame(point_in_root_frame); |
| return FrameToContents(frame_point); |
| } |
| |
| FloatPoint LocalFrameView::RootFrameToContents( |
| const FloatPoint& point_in_root_frame) const { |
| FloatPoint frame_point = ConvertFromRootFrame(point_in_root_frame); |
| return FrameToContents(frame_point); |
| } |
| |
| IntPoint LocalFrameView::RootFrameToContents( |
| const IntPoint& root_frame_point) const { |
| IntPoint frame_point = ConvertFromRootFrame(root_frame_point); |
| return FrameToContents(frame_point); |
| } |
| |
| IntRect LocalFrameView::RootFrameToContents( |
| const IntRect& root_frame_rect) const { |
| return IntRect(RootFrameToContents(root_frame_rect.Location()), |
| root_frame_rect.Size()); |
| } |
| |
| LayoutPoint LocalFrameView::ContentsToRootFrame( |
| const LayoutPoint& contents_point) const { |
| LayoutPoint frame_point = ContentsToFrame(contents_point); |
| return ConvertToRootFrame(frame_point); |
| } |
| |
| IntPoint LocalFrameView::ContentsToRootFrame( |
| const IntPoint& contents_point) const { |
| IntPoint frame_point = ContentsToFrame(contents_point); |
| return ConvertToRootFrame(frame_point); |
| } |
| |
| IntRect LocalFrameView::ContentsToRootFrame( |
| const IntRect& contents_rect) const { |
| IntRect rect_in_frame = ContentsToFrame(contents_rect); |
| return ConvertToRootFrame(rect_in_frame); |
| } |
| |
| LayoutPoint LocalFrameView::ViewportToContents( |
| const LayoutPoint& point_in_viewport) const { |
| LayoutPoint point_in_root_frame( |
| frame_->GetPage()->GetVisualViewport().ViewportToRootFrame( |
| FloatPoint(point_in_viewport))); |
| LayoutPoint point_in_frame = ConvertFromRootFrame(point_in_root_frame); |
| return FrameToContents(point_in_frame); |
| } |
| |
| IntRect LocalFrameView::ViewportToContents( |
| const IntRect& rect_in_viewport) const { |
| IntRect rect_in_root_frame = |
| frame_->GetPage()->GetVisualViewport().ViewportToRootFrame( |
| rect_in_viewport); |
| IntRect frame_rect = ConvertFromRootFrame(rect_in_root_frame); |
| return FrameToContents(frame_rect); |
| } |
| |
| IntPoint LocalFrameView::ViewportToContents( |
| const IntPoint& point_in_viewport) const { |
| return RoundedIntPoint(ViewportToContents(LayoutPoint(point_in_viewport))); |
| } |
| |
| IntRect LocalFrameView::ContentsToViewport( |
| const IntRect& rect_in_contents) const { |
| IntRect rect_in_frame = ContentsToFrame(rect_in_contents); |
| IntRect rect_in_root_frame = ConvertToRootFrame(rect_in_frame); |
| return frame_->GetPage()->GetVisualViewport().RootFrameToViewport( |
| rect_in_root_frame); |
| } |
| |
| IntPoint LocalFrameView::ContentsToViewport( |
| const IntPoint& point_in_contents) const { |
| IntPoint point_in_frame = ContentsToFrame(point_in_contents); |
| IntPoint point_in_root_frame = ConvertToRootFrame(point_in_frame); |
| return frame_->GetPage()->GetVisualViewport().RootFrameToViewport( |
| point_in_root_frame); |
| } |
| |
| IntRect LocalFrameView::ContentsToScreen(const IntRect& rect) const { |
| PlatformChromeClient* client = GetChromeClient(); |
| if (!client) |
| return IntRect(); |
| return client->ViewportToScreen(ContentsToViewport(rect), this); |
| } |
| |
| IntPoint LocalFrameView::SoonToBeRemovedUnscaledViewportToContents( |
| const IntPoint& point_in_viewport) const { |
| IntPoint point_in_root_frame = FlooredIntPoint( |
| frame_->GetPage()->GetVisualViewport().ViewportCSSPixelsToRootFrame( |
| point_in_viewport)); |
| IntPoint point_in_this_frame = ConvertFromRootFrame(point_in_root_frame); |
| return FrameToContents(point_in_this_frame); |
| } |
| |
| Scrollbar* LocalFrameView::ScrollbarAtFramePoint( |
| const IntPoint& point_in_frame) { |
| if (HorizontalScrollbar() && |
| HorizontalScrollbar()->ShouldParticipateInHitTesting() && |
| HorizontalScrollbar()->FrameRect().Contains(point_in_frame)) |
| return HorizontalScrollbar(); |
| if (VerticalScrollbar() && |
| VerticalScrollbar()->ShouldParticipateInHitTesting() && |
| VerticalScrollbar()->FrameRect().Contains(point_in_frame)) |
| return VerticalScrollbar(); |
| return nullptr; |
| } |
| |
| static void PositionScrollbarLayer(GraphicsLayer* graphics_layer, |
| Scrollbar* scrollbar) { |
| if (!graphics_layer || !scrollbar) |
| return; |
| |
| IntRect scrollbar_rect = scrollbar->FrameRect(); |
| graphics_layer->SetPosition(scrollbar_rect.Location()); |
| graphics_layer->SetOffsetFromLayoutObject( |
| ToIntSize(scrollbar_rect.Location())); |
| |
| if (scrollbar_rect.Size() == graphics_layer->Size()) |
| return; |
| |
| graphics_layer->SetSize(scrollbar_rect.Size()); |
| |
| if (graphics_layer->HasContentsLayer()) { |
| graphics_layer->SetContentsRect( |
| IntRect(0, 0, scrollbar_rect.Width(), scrollbar_rect.Height())); |
| return; |
| } |
| |
| graphics_layer->SetDrawsContent(true); |
| graphics_layer->SetNeedsDisplay(); |
| } |
| |
| static void PositionScrollCornerLayer(GraphicsLayer* graphics_layer, |
| const IntRect& corner_rect) { |
| if (!graphics_layer) |
| return; |
| graphics_layer->SetDrawsContent(!corner_rect.IsEmpty()); |
| graphics_layer->SetPosition(corner_rect.Location()); |
| graphics_layer->SetOffsetFromLayoutObject(ToIntSize(corner_rect.Location())); |
| if (corner_rect.Size() != graphics_layer->Size()) |
| graphics_layer->SetNeedsDisplay(); |
| graphics_layer->SetSize(corner_rect.Size()); |
| } |
| |
| void LocalFrameView::PositionScrollbarLayers() { |
| PositionScrollbarLayer(LayerForHorizontalScrollbar(), HorizontalScrollbar()); |
| PositionScrollbarLayer(LayerForVerticalScrollbar(), VerticalScrollbar()); |
| PositionScrollCornerLayer(LayerForScrollCorner(), ScrollCornerRect()); |
| } |
| |
| bool LocalFrameView::UpdateAfterCompositingChange() { |
| if (ScrollOriginChanged()) { |
| // If the scroll origin changed, we need to update the layer position on |
| // the compositor since the offset itself might not have changed. |
| auto* layout_view = GetLayoutView(); |
| if (layout_view && layout_view->UsesCompositing()) |
| layout_view->Compositor()->FrameViewDidScroll(); |
| ResetScrollOriginChanged(); |
| } |
| return false; |
| } |
| |
| bool LocalFrameView::UserInputScrollable( |
| ScrollbarOrientation orientation) const { |
| Document* document = GetFrame().GetDocument(); |
| Element* fullscreen_element = Fullscreen::FullscreenElementFrom(*document); |
| if (fullscreen_element && fullscreen_element != document->documentElement()) |
| return false; |
| |
| if (RuntimeEnabledFeatures::RootLayerScrollingEnabled()) |
| return false; |
| |
| ScrollbarMode mode = (orientation == kHorizontalScrollbar) |
| ? EffectiveHorizontalScrollbarMode() |
| : EffectiveVerticalScrollbarMode(); |
| |
| return mode == kScrollbarAuto || mode == kScrollbarAlwaysOn; |
| } |
| |
| bool LocalFrameView::ShouldPlaceVerticalScrollbarOnLeft() const { |
| return false; |
| } |
| |
| LayoutRect LocalFrameView::ScrollIntoView( |
| const LayoutRect& rect_in_absolute, |
| const WebScrollIntoViewParams& params) { |
| GetLayoutBox()->SetPendingOffsetToScroll(LayoutSize()); |
| |
| LayoutRect scroll_snapport_rect(VisibleScrollSnapportRect()); |
| |
| ScrollOffset new_scroll_offset = |
| ClampScrollOffset(ScrollAlignment::GetScrollOffsetToExpose( |
| scroll_snapport_rect, rect_in_absolute, params.GetScrollAlignmentX(), |
| params.GetScrollAlignmentY(), GetScrollOffset())); |
| ScrollOffset old_scroll_offset = GetScrollOffset(); |
| if (params.GetScrollType() == kUserScroll) { |
| if (!UserInputScrollable(kHorizontalScrollbar)) |
| new_scroll_offset.SetWidth(old_scroll_offset.Width()); |
| if (!UserInputScrollable(kVerticalScrollbar)) |
| new_scroll_offset.SetHeight(old_scroll_offset.Height()); |
| } |
| |
| if (new_scroll_offset != old_scroll_offset) { |
| new_scroll_offset = ShouldUseIntegerScrollOffset() |
| ? ScrollOffset(FlooredIntSize(new_scroll_offset)) |
| : new_scroll_offset; |
| if (params.is_for_scroll_sequence) { |
| DCHECK(params.GetScrollType() == kProgrammaticScroll || |
| params.GetScrollType() == kUserScroll); |
| ScrollBehavior behavior = |
| DetermineScrollBehavior(params.GetScrollBehavior(), |
| GetLayoutBox()->Style()->GetScrollBehavior()); |
| GetSmoothScrollSequencer()->QueueAnimation(this, new_scroll_offset, |
| behavior); |
| ScrollOffset scroll_offset_difference = |
| new_scroll_offset - old_scroll_offset; |
| GetLayoutBox()->SetPendingOffsetToScroll( |
| -LayoutSize(scroll_offset_difference)); |
| } else { |
| SetScrollOffset(new_scroll_offset, params.GetScrollType()); |
| } |
| } |
| |
| // Scrolling the LocalFrameView cannot change the input rect's location |
| // relative to the document. |
| // TODO(szager): PaintLayerScrollableArea::ScrollIntoView clips the return |
| // value to the visible content rect, but this does not. |
| return rect_in_absolute; |
| } |
| |
| IntRect LocalFrameView::ScrollCornerRect() const { |
| IntRect corner_rect; |
| |
| if (HasOverlayScrollbars()) |
| return corner_rect; |
| |
| if (HorizontalScrollbar() && Width() - HorizontalScrollbar()->Width() > 0) { |
| corner_rect.Unite(IntRect(ShouldPlaceVerticalScrollbarOnLeft() |
| ? 0 |
| : HorizontalScrollbar()->Width(), |
| Height() - HorizontalScrollbar()->Height(), |
| Width() - HorizontalScrollbar()->Width(), |
| HorizontalScrollbar()->Height())); |
| } |
| |
| if (VerticalScrollbar() && Height() - VerticalScrollbar()->Height() > 0) { |
| corner_rect.Unite(IntRect(ShouldPlaceVerticalScrollbarOnLeft() |
| ? 0 |
| : (Width() - VerticalScrollbar()->Width()), |
| VerticalScrollbar()->Height(), |
| VerticalScrollbar()->Width(), |
| Height() - VerticalScrollbar()->Height())); |
| } |
| |
| return corner_rect; |
| } |
| |
| bool LocalFrameView::IsScrollCornerVisible() const { |
| return !ScrollCornerRect().IsEmpty(); |
| } |
| |
| ScrollBehavior LocalFrameView::ScrollBehaviorStyle() const { |
| Element* scroll_element = frame_->GetDocument()->scrollingElement(); |
| LayoutObject* layout_object = |
| scroll_element ? scroll_element->GetLayoutObject() : nullptr; |
| if (layout_object && |
| layout_object->Style()->GetScrollBehavior() == kScrollBehaviorSmooth) |
| return kScrollBehaviorSmooth; |
| |
| return kScrollBehaviorInstant; |
| } |
| |
| void LocalFrameView::Paint(GraphicsContext& context, |
| const GlobalPaintFlags global_paint_flags, |
| const CullRect& cull_rect, |
| const IntSize& paint_offset) const { |
| // |paint_offset| is not used because paint properties of the contents will |
| // ensure the correct location. |
| PaintInternal(context, global_paint_flags, cull_rect); |
| } |
| |
| void LocalFrameView::PaintWithLifecycleUpdate( |
| GraphicsContext& context, |
| const GlobalPaintFlags global_paint_flags, |
| const CullRect& cull_rect) { |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.Lifecycle().AdvanceTo(DocumentLifecycle::kInPaint); |
| }); |
| |
| PaintInternal(context, global_paint_flags, cull_rect); |
| |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.Lifecycle().AdvanceTo(DocumentLifecycle::kPaintClean); |
| }); |
| } |
| |
| void LocalFrameView::PaintInternal(GraphicsContext& context, |
| const GlobalPaintFlags global_paint_flags, |
| const CullRect& cull_rect) const { |
| FramePainter(*this).Paint(context, global_paint_flags, cull_rect); |
| } |
| |
| void LocalFrameView::PaintContents(GraphicsContext& context, |
| const GlobalPaintFlags global_paint_flags, |
| const IntRect& damage_rect) { |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.Lifecycle().AdvanceTo(DocumentLifecycle::kInPaint); |
| }); |
| |
| FramePainter(*this).PaintContents(context, global_paint_flags, damage_rect); |
| |
| ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) { |
| frame_view.Lifecycle().AdvanceTo(DocumentLifecycle::kPaintClean); |
| }); |
| } |
| |
| bool LocalFrameView::IsPointInScrollbarCorner( |
| const IntPoint& point_in_root_frame) { |
| if (!ScrollbarCornerPresent()) |
| return false; |
| |
| IntPoint frame_point = ConvertFromRootFrame(point_in_root_frame); |
| |
| if (HorizontalScrollbar()) { |
| int horizontal_scrollbar_y_min = HorizontalScrollbar()->FrameRect().Y(); |
| int horizontal_scrollbar_y_max = |
| HorizontalScrollbar()->FrameRect().Y() + |
| HorizontalScrollbar()->FrameRect().Height(); |
| int horizontal_scrollbar_x_min = HorizontalScrollbar()->FrameRect().X() + |
| HorizontalScrollbar()->FrameRect().Width(); |
| |
| return frame_point.Y() > horizontal_scrollbar_y_min && |
| frame_point.Y() < horizontal_scrollbar_y_max && |
| frame_point.X() > horizontal_scrollbar_x_min; |
| } |
| |
| int vertical_scrollbar_x_min = VerticalScrollbar()->FrameRect().X(); |
| int vertical_scrollbar_x_max = VerticalScrollbar()->FrameRect().X() + |
| VerticalScrollbar()->FrameRect().Width(); |
| int vertical_scrollbar_y_min = VerticalScrollbar()->FrameRect().Y() + |
| VerticalScrollbar()->FrameRect().Height(); |
| |
| return frame_point.X() > vertical_scrollbar_x_min && |
| frame_point.X() < vertical_scrollbar_x_max && |
| frame_point.Y() > vertical_scrollbar_y_min; |
| } |
| |
| bool LocalFrameView::ScrollbarCornerPresent() const { |
| return (HorizontalScrollbar() && |
| Width() - HorizontalScrollbar()->Width() > 0) || |
| (VerticalScrollbar() && Height() - VerticalScrollbar()->Height() > 0); |
| } |
| |
| IntRect LocalFrameView::ConvertToRootFrame(const IntRect& local_rect) const { |
| if (LocalFrameView* parent = ParentFrameView()) { |
| IntRect parent_rect = ConvertToContainingEmbeddedContentView(local_rect); |
| return parent->ConvertToRootFrame(parent_rect); |
| } |
| return local_rect; |
| } |
| |
| IntPoint LocalFrameView::ConvertToRootFrame(const IntPoint& local_point) const { |
| return RoundedIntPoint(ConvertToRootFrame(LayoutPoint(local_point))); |
| } |
| |
| LayoutPoint LocalFrameView::ConvertToRootFrame( |
| const LayoutPoint& local_point) const { |
| if (LocalFrameView* parent = ParentFrameView()) { |
| LayoutPoint parent_point = |
| ConvertToContainingEmbeddedContentView(local_point); |
| return parent->ConvertToRootFrame(parent_point); |
| } |
| return local_point; |
| } |
| |
| IntRect LocalFrameView::ConvertFromRootFrame( |
| const IntRect& rect_in_root_frame) const { |
| if (LocalFrameView* parent = ParentFrameView()) { |
| IntRect parent_rect = parent->ConvertFromRootFrame(rect_in_root_frame); |
| return ConvertFromContainingEmbeddedContentView(parent_rect); |
| } |
| return rect_in_root_frame; |
| } |
| |
| IntPoint LocalFrameView::ConvertFromRootFrame( |
| const IntPoint& point_in_root_frame) const { |
| return RoundedIntPoint( |
| ConvertFromRootFrame(LayoutPoint(point_in_root_frame))); |
| } |
| |
| LayoutPoint LocalFrameView::ConvertFromRootFrame( |
| const LayoutPoint& point_in_root_frame) const { |
| if (LocalFrameView* parent = ParentFrameView()) { |
| LayoutPoint parent_point = |
| parent->ConvertFromRootFrame(point_in_root_frame); |
| return ConvertFromContainingEmbeddedContentView(parent_point); |
| } |
| return point_in_root_frame; |
| } |
| |
| FloatPoint LocalFrameView::ConvertFromRootFrame( |
| const FloatPoint& point_in_root_frame) const { |
| if (LocalFrameView* parent = ParentFrameView()) { |
| FloatPoint parent_point = parent->ConvertFromRootFrame(point_in_root_frame); |
| return ConvertFromContainingEmbeddedContentView(parent_point); |
| } |
| return point_in_root_frame; |
| } |
| |
| IntPoint LocalFrameView::ConvertFromContainingEmbeddedContentViewToScrollbar( |
| const Scrollbar& scrollbar, |
| const IntPoint& parent_point) const { |
| IntPoint new_point = parent_point; |
| // Scrollbars won't be transformed within us |
| new_point.MoveBy(-scrollbar.Location()); |
| return new_point; |
| } |
| |
| void LocalFrameView::SetParentVisible(bool visible) { |
| if (IsParentVisible() == visible) |
| return; |
| |
| // As parent visibility changes, we may need to recomposite this frame view |
| // and potentially child frame views. |
| SetNeedsCompositingUpdate(kCompositingUpdateRebuildTree); |
| |
| parent_visible_ = visible; |
| |
| if (!IsSelfVisible()) |
| return; |
| |
| ForAllChildViewsAndPlugins( |
| [visible](EmbeddedContentView& embedded_content_view) { |
| embedded_content_view.SetParentVisible(visible); |
| }); |
| } |
| |
| void LocalFrameView::Show() { |
| if (!IsSelfVisible()) { |
| SetSelfVisible(true); |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) { |
| GetScrollingContext()->SetScrollGestureRegionIsDirty(true); |
| } |
| SetNeedsCompositingUpdate(kCompositingUpdateRebuildTree); |
| UpdateParentScrollableAreaSet(); |
| if (!RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| // The existance of scrolling properties depends on visibility through |
| // isScrollable() so ensure properties are updated if visibility changes. |
| SetNeedsPaintPropertyUpdate(); |
| } |
| if (IsParentVisible()) { |
| ForAllChildViewsAndPlugins( |
| [](EmbeddedContentView& embedded_content_view) { |
| embedded_content_view.SetParentVisible(true); |
| }); |
| } |
| } |
| } |
| |
| void LocalFrameView::Hide() { |
| if (IsSelfVisible()) { |
| if (IsParentVisible()) { |
| ForAllChildViewsAndPlugins( |
| [](EmbeddedContentView& embedded_content_view) { |
| embedded_content_view.SetParentVisible(false); |
| }); |
| } |
| SetSelfVisible(false); |
| if (ScrollingCoordinator* scrolling_coordinator = |
| this->GetScrollingCoordinator()) { |
| GetScrollingContext()->SetScrollGestureRegionIsDirty(true); |
| } |
| SetNeedsCompositingUpdate(kCompositingUpdateRebuildTree); |
| UpdateParentScrollableAreaSet(); |
| if (!RuntimeEnabledFeatures::RootLayerScrollingEnabled()) { |
| // The existance of scrolling properties depends on visibility through |
| // isScrollable() so ensure properties are updated if visibility changes. |
| SetNeedsPaintPropertyUpdate(); |
| } |
| } |
| } |
| |
| int LocalFrameView::ViewportWidth() const { |
| int viewport_width = GetLayoutSize(kIncludeScrollbars).Width(); |
| return AdjustForAbsoluteZoom::AdjustInt(viewport_width, GetLayoutView()); |
| } |
| |
| ScrollableArea* LocalFrameView::GetScrollableArea() { |
| if (viewport_scrollable_area_) |
| return viewport_scrollable_area_.Get(); |
| |
| return LayoutViewportScrollableArea(); |
| } |
| |
| ScrollableArea* LocalFrameView::LayoutViewportScrollableArea() { |
| if (!RuntimeEnabledFeatures::RootLayerScrollingEnabled()) |
| return this; |
| |
| auto* layout_view = this->GetLayoutView(); |
| return layout_view ? layout_view->GetScrollableArea() : nullptr; |
| } |
| |
| RootFrameViewport* LocalFrameView::GetRootFrameViewport() { |
| return viewport_scrollable_area_.Get(); |
| } |
| |
| LayoutObject* LocalFrameView::ViewportLayoutObject() const { |
| if (Document* document = GetFrame().GetDocument()) { |
| if (Element* element = document->ViewportDefiningElement()) |
| return element->GetLayoutObject(); |
| } |
| return nullptr; |
| } |
| |
| void LocalFrameView::CollectAnnotatedRegions( |
| LayoutObject& layout_object, |
| Vector<AnnotatedRegionValue>& regions) const { |
| // LayoutTexts don't have their own style, they just use their parent's style, |
| // so we don't want to include them. |
| if (layout_object.IsText()) |
| return; |
| |
| layout_object.AddAnnotatedRegions(regions); |
| for (LayoutObject* curr = layout_object.SlowFirstChild(); curr; |
| curr = curr->NextSibling()) |
| CollectAnnotatedRegions(*curr, regions); |
| } |
| |
| void LocalFrameView::UpdateViewportIntersectionsForSubtree( |
| DocumentLifecycle::LifecycleState target_state) { |
| // TODO(dcheng): Since LocalFrameView tree updates are deferred, FrameViews |
| // might still be in the LocalFrameView hierarchy even though the associated |
| // Document is already detached. Investigate if this check and a similar check |
| // in lifecycle updates are still needed when there are no more deferred |
| // LocalFrameView updates: https://crbug.com/561683 |
| if (!GetFrame().GetDocument()->IsActive()) |
| return; |
| |
| if (target_state == DocumentLifecycle::kPaintClean) { |
| RecordDeferredLoadingStats(); |
| if (!NeedsLayout()) { |
| // Notify javascript IntersectionObservers |
| if (GetFrame().GetDocument()->GetIntersectionObserverController()) { |
| GetFrame() |
| .GetDocument() |
| ->GetIntersectionObserverController() |
| ->ComputeTrackedIntersectionObservations(); |
| } |
| } |
| } |
| |
| // Don't throttle display:none frames (see updateRenderThrottlingStatus). |
| HTMLFrameOwnerElement* owner_element = frame_->DeprecatedLocalOwner(); |
| if (hidden_for_throttling_ && owner_element && |
| !owner_element->GetLayoutObject()) { |
| // No need to notify children because descendants of display:none frames |
| // should remain throttled. |
| UpdateRenderThrottlingStatus(hidden_for_throttling_, subtree_throttled_, |
| kDontForceThrottlingInvalidation, |
| kDontNotifyChildren); |
| } |
| |
| for (Frame* child = frame_->Tree().FirstChild(); child; |
| child = child->Tree().NextSibling()) { |
| child->View()->UpdateViewportIntersectionsForSubtree(target_state); |
| } |
| needs_intersection_observation_ = false; |
| } |
| |
| void LocalFrameView::UpdateRenderThrottlingStatusForTesting() { |
| visibility_observer_->DeliverObservationsForTesting(); |
| } |
| |
| void LocalFrameView::CrossOriginStatusChanged() { |
| // Cross-domain status is not stored as a dirty bit within LocalFrameView, |
| // so force-invalidate throttling status when it changes regardless of |
| // previous or new value. |
| UpdateRenderThrottlingStatus(hidden_for_throttling_, subtree_throttled_, |
| kForceThrottlingInvalidation); |
| } |
| |
| void LocalFrameView::UpdateRenderThrottlingStatus( |
| bool hidden, |
| bool subtree_throttled, |
| ForceThrottlingInvalidationBehavior force_throttling_invalidation_behavior, |
| NotifyChildrenBehavior notify_children_behavior) { |
| TRACE_EVENT0("blink", "LocalFrameView::updateRenderThrottlingStatus"); |
| DCHECK(!IsInPerformLayout()); |
| DCHECK(!frame_->GetDocument() || !frame_->GetDocument()->InStyleRecalc()); |
| bool was_throttled = CanThrottleRendering(); |
| |
| // Note that we disallow throttling of 0x0 and display:none frames because |
| // some sites use them to drive UI logic. |
| hidden_for_throttling_ = hidden && !Size().IsEmpty(); |
| subtree_throttled_ = subtree_throttled; |
| HTMLFrameOwnerElement* owner_element = frame_->DeprecatedLocalOwner(); |
| if (owner_element) |
| hidden_for_throttling_ &= !!owner_element->GetLayoutObject(); |
| |
| bool is_throttled = CanThrottleRendering(); |
| bool became_unthrottled = was_throttled && !is_throttled; |
| |
| // If this LocalFrameView became unthrottled or throttled, we must make sure |
| // all its children are notified synchronously. Otherwise we 1) might attempt |
| // to paint one of the children with an out-of-date layout before |
| // |updateRenderThrottlingStatus| has made it throttled or 2) fail to |
| // unthrottle a child whose parent is unthrottled by a later notification. |
| if (notify_children_behavior == kNotifyChildren && |
| (was_throttled != is_throttled || |
| force_throttling_invalidation_behavior == |
| kForceThrottlingInvalidation)) { |
| ForAllChildLocalFrameViews([is_throttled](LocalFrameView& frame_view) { |
| frame_view.UpdateRenderThrottlingStatus(frame_view.hidden_for_throttling_, |
| is_throttled); |
| }); |
| } |
| |
| ScrollingCoordinator* scrolling_coordinator = this->GetScrollingCoordinator(); |
| if (became_unthrottled || |
| force_throttling_invalidation_behavior == kForceThrottlingInvalidation) { |
| // ScrollingCoordinator needs to update according to the new throttling |
| // status. |
| if (scrolling_coordinator) |
| scrolling_coordinator->NotifyGeometryChanged(this); |
| // Start ticking animation frames again if necessary. |
| if (GetPage()) |
| GetPage()->Animator().ScheduleVisualUpdate(frame_.Get()); |
| // Force a full repaint of this frame to ensure we are not left with a |
| // partially painted version of this frame's contents if we skipped |
| // painting them while the frame was throttled. |
| auto* layout_view = GetLayoutView(); |
| if (layout_view) |
| layout_view->InvalidatePaintForViewAndCompositedLayers(); |
| // Also need to update all paint properties that might be skipped while |
| // the frame was throttled. |
| SetSubtreeNeedsPaintPropertyUpdate(); |
| } |
| |
| bool has_handlers = |
| frame_->GetPage() && |
| (frame_->GetPage()->GetEventHandlerRegistry().HasEventHandlers( |
| EventHandlerRegistry::kTouchAction) || |
| frame_->GetPage()->GetEventHandlerRegistry().HasEventHandlers( |
| EventHandlerRegistry::kTouchStartOrMoveEventBlocking) || |
| frame_->GetPage()->GetEventHandlerRegistry().HasEventHandlers( |
| EventHandlerRegistry::kTouchStartOrMoveEventBlockingLowLatency)); |
| if (was_throttled != CanThrottleRendering() && scrolling_coordinator && |
| has_handlers) { |
| scrolling_coordinator->TouchEventTargetRectsDidChange( |
| &GetFrame().LocalFrameRoot()); |
| } |
| |
| if (FrameScheduler* frame_scheduler = frame_->GetFrameScheduler()) { |
| frame_scheduler->SetFrameVisible(!hidden_for_throttling_); |
| frame_scheduler->SetCrossOrigin(frame_->IsCrossOriginSubframe()); |
| frame_scheduler->TraceUrlChange(frame_->GetDocument()->Url().GetString()); |
| } |
| |
| #if DCHECK_IS_ON() |
| // Make sure we never have an unthrottled frame inside a throttled one. |
| LocalFrameView* parent = ParentFrameView(); |
| while (parent) { |
| DCHECK(CanThrottleRendering() || !parent->CanThrottleRendering()); |
| parent = parent->ParentFrameView(); |
| } |
| #endif |
| } |
| |
| void LocalFrameView::RecordDeferredLoadingStats() { |
| if (!GetFrame().GetDocument()->GetFrame() || |
| !GetFrame().IsCrossOriginSubframe()) |
| return; |
| |
| LocalFrameView* parent = ParentFrameView(); |
| if (!parent) { |
| HTMLFrameOwnerElement* element = GetFrame().DeprecatedLocalOwner(); |
| // We would fall into an else block on some teardowns and other weird cases. |
| if (!element || !element->GetLayoutObject()) { |
| GetFrame().GetDocument()->RecordDeferredLoadReason( |
| WouldLoadReason::kNoParent); |
| } |
| return; |
| } |
| // Small inaccuracy: frames with origins that match the top level might be |
| // nested in a cross-origin frame. To keep code simpler, count such frames as |
| // WouldLoadVisible, even when their parent is offscreen. |
| WouldLoadReason why_parent_loaded = WouldLoadReason::kVisible; |
| if (parent->ParentFrameView() && parent->GetFrame().IsCrossOriginSubframe()) |
| why_parent_loaded = parent->GetFrame().GetDocument()->DeferredLoadReason(); |
| |
| // If the parent wasn't loaded, the children won't be either. |
| if (why_parent_loaded == WouldLoadReason::kCreated) |
| return; |
| // These frames are never meant to be seen so we will need to load them. |
| IntRect frame_rect(FrameRect()); |
| if (frame_rect.IsEmpty() || frame_rect.MaxY() < 0 || frame_rect.MaxX() < 0) { |
| GetFrame().GetDocument()->RecordDeferredLoadReason(why_parent_loaded); |
| return; |
| } |
| |
| IntRect parent_rect = parent->FrameRect(); |
| // First clause: for this rough data collection we assume the user never |
| // scrolls right. |
| if (frame_rect.X() >= parent_rect.Width() || parent_rect.Height() <= 0) |
| return; |
| |
| int this_frame_screens_away = 0; |
| // If an frame is created above the current scoll position, this logic counts |
| // it as visible. |
| if (frame_rect.Y() > parent->GetScrollOffset().Height()) { |
| this_frame_screens_away = |
| (frame_rect.Y() - parent->GetScrollOffset().Height()) / |
| parent_rect.Height(); |
| } |
| DCHECK_GE(this_frame_screens_away, 0); |
| |
| int parent_screens_away = 0; |
| if (why_parent_loaded <= WouldLoadReason::kVisible) { |
| parent_screens_away = static_cast<int>(WouldLoadReason::kVisible) - |
| static_cast<int>(why_parent_loaded); |
| } |
| |
| int total_screens_away = this_frame_screens_away + parent_screens_away; |
| |
| // We're collecting data for frames that are at most 3 screens away. |
| if (total_screens_away > 3) |
| return; |
| |
| GetFrame().GetDocument()->RecordDeferredLoadReason( |
| static_cast<WouldLoadReason>(static_cast<int>(WouldLoadReason::kVisible) - |
| total_screens_away)); |
| } |
| |
| void LocalFrameView::SetNeedsForcedCompositingUpdate() { |
| needs_forced_compositing_update_ = true; |
| if (LocalFrameView* parent = ParentFrameView()) |
| parent->SetNeedsForcedCompositingUpdate(); |
| } |
| |
| void LocalFrameView::SetNeedsIntersectionObservation() { |
| needs_intersection_observation_ = true; |
| if (LocalFrameView* parent = ParentFrameView()) |
| parent->SetNeedsIntersectionObservation(); |
| } |
| |
| bool LocalFrameView::ShouldThrottleRendering() const { |
| bool throttled_for_global_reasons = CanThrottleRendering() && |
| frame_->GetDocument() && |
| Lifecycle().ThrottlingAllowed(); |
| if (!throttled_for_global_reasons || needs_forced_compositing_update_) |
| return false; |
| |
| // Only lifecycle phases up to layout are needed to generate an |
| // intersection observation. |
| return !needs_intersection_observation_ || |
| GetFrame().LocalFrameRoot().View()->past_layout_lifecycle_update_; |
| } |
| |
| bool LocalFrameView::CanThrottleRendering() const { |
| if (lifecycle_updates_throttled_) |
| return true; |
| if (!RuntimeEnabledFeatures::RenderingPipelineThrottlingEnabled()) |
| return false; |
| if (subtree_throttled_) |
| return true; |
| // We only throttle hidden cross-origin frames. This is to avoid a situation |
| // where an ancestor frame directly depends on the pipeline timing of a |
| // descendant and breaks as a result of throttling. The rationale is that |
| // cross-origin frames must already communicate with asynchronous messages, |
| // so they should be able to tolerate some delay in receiving replies from a |
| // throttled peer. |
| return hidden_for_throttling_ && frame_->IsCrossOriginSubframe(); |
| } |
| |
| void LocalFrameView::BeginLifecycleUpdates() { |
| // Avoid pumping frames for the initially empty document. |
| if (!GetFrame().Loader().StateMachine()->CommittedFirstRealDocumentLoad()) |
| return; |
| lifecycle_updates_throttled_ = false; |
| if (auto* owner = GetFrame().OwnerLayoutObject()) |
| owner->SetMayNeedPaintInvalidation(); |
| |
| LayoutView* layout_view = GetLayoutView(); |
| bool layout_view_is_empty = layout_view && !layout_view->FirstChild(); |
| if (layout_view_is_empty && !DidFirstLayout() && !NeedsLayout()) { |
| // Make sure a display:none iframe gets an initial layout pass. |
| layout_view->SetNeedsLayout(LayoutInvalidationReason::kAddedToLayout, |
| kMarkOnlyThis); |
| } |
| |
| SetupRenderThrottling(); |
| UpdateRenderThrottlingStatus(hidden_for_throttling_, subtree_throttled_); |
| // The compositor will "defer commits" for the main frame until we |
| // explicitly request them. |
| if (GetFrame().IsMainFrame()) |
| GetFrame().GetPage()->GetChromeClient().BeginLifecycleUpdates(); |
| } |
| |
| void LocalFrameView::SetInitialViewportSize(const IntSize& viewport_size) { |
| if (viewport_size == initial_viewport_size_) |
| return; |
| |
| initial_viewport_size_ = viewport_size; |
| if (Document* document = frame_->GetDocument()) |
| document->GetStyleEngine().InitialViewportChanged(); |
| } |
| |
| int LocalFrameView::InitialViewportWidth() const { |
| DCHECK(frame_->IsMainFrame()); |
| return initial_viewport_size_.Width(); |
| } |
| |
| int LocalFrameView::InitialViewportHeight() const { |
| DCHECK(frame_->IsMainFrame()); |
| return initial_viewport_size_.Height(); |
| } |
| |
| bool LocalFrameView::HasVisibleSlowRepaintViewportConstrainedObjects() const { |
| if (!ViewportConstrainedObjects()) |
| return false; |
| for (const LayoutObject* layout_object : *ViewportConstrainedObjects()) { |
| DCHECK(layout_object->IsBoxModelObject() && layout_object->HasLayer()); |
| DCHECK(layout_object->Style()->GetPosition() == EPosition::kFixed || |
| layout_object->Style()->GetPosition() == EPosition::kSticky); |
| if (ToLayoutBoxModelObject(layout_object)->IsSlowRepaintConstrainedObject()) |
| return true; |
| } |
| return false; |
| } |
| |
| void LocalFrameView::UpdateSubFrameScrollOnMainReason( |
| const Frame& frame, |
| MainThreadScrollingReasons parent_reason) { |
| MainThreadScrollingReasons reasons = parent_reason; |
| |
| if (!GetPage()->GetSettings().GetThreadedScrollingEnabled()) |
| reasons |= MainThreadScrollingReason::kThreadedScrollingDisabled; |
| |
| if (!frame.IsLocalFrame()) |
| return; |
| |
| LocalFrameView& frame_view = *ToLocalFrame(frame).View(); |
| if (frame_view.ShouldThrottleRendering()) |
| return; |
| |
| if (!frame_view.LayoutViewportScrollableArea()) |
| return; |
| |
| reasons |= frame_view.MainThreadScrollingReasonsPerFrame(); |
| if (GraphicsLayer* layer_for_scrolling = ToLocalFrame(frame) |
| .View() |
| ->LayoutViewportScrollableArea() |
| ->LayerForScrolling()) { |
| if (WebLayer* platform_layer_for_scrolling = |
| layer_for_scrolling->PlatformLayer()) { |
| if (reasons) { |
| platform_layer_for_scrolling->AddMainThreadScrollingReasons(reasons); |
| } else { |
| // Clear all main thread scrolling reasons except the one that's set |
| // if there is a running scroll animation. |
| platform_layer_for_scrolling->ClearMainThreadScrollingReasons( |
| ~MainThreadScrollingReason::kHandlingScrollFromMainThread); |
| } |
| } |
| } |
| |
| Frame* child = frame.Tree().FirstChild(); |
| while (child) { |
| UpdateSubFrameScrollOnMainReason(*child, reasons); |
| child = child->Tree().NextSibling(); |
| } |
| |
| if (frame.IsMainFrame()) |
| main_thread_scrolling_reasons_ = reasons; |
| DCHECK(!MainThreadScrollingReason::HasNonCompositedScrollReasons( |
| main_thread_scrolling_reasons_)); |
| } |
| |
| MainThreadScrollingReasons LocalFrameView::MainThreadScrollingReasonsPerFrame() |
| const { |
| MainThreadScrollingReasons reasons = |
| static_cast<MainThreadScrollingReasons>(0); |
| |
| if (ShouldThrottleRendering()) |
| return reasons; |
| |
| if (HasBackgroundAttachmentFixedObjects()) |
| reasons |= MainThreadScrollingReason::kHasBackgroundAttachmentFixedObjects; |
| |
| ScrollingReasons scrolling_reasons = GetScrollingReasons(); |
| const bool may_be_scrolled_by_input = (scrolling_reasons == kScrollable); |
| const bool may_be_scrolled_by_script = |
| may_be_scrolled_by_input || |
| (scrolling_reasons == kNotScrollableExplicitlyDisabled); |
| |
| // TODO(awoloszyn) Currently crbug.com/304810 will let certain |
| // overflow:hidden elements scroll on the compositor thread, so we should |
| // not let this move there path as an optimization, when we have |
| // slow-repaint elements. |
| if (may_be_scrolled_by_script && |
| HasVisibleSlowRepaintViewportConstrainedObjects()) { |
| reasons |= |
| MainThreadScrollingReason::kHasNonLayerViewportConstrainedObjects; |
| } |
| return reasons; |
| } |
| |
| MainThreadScrollingReasons LocalFrameView::GetMainThreadScrollingReasons() |
| const { |
| MainThreadScrollingReasons reasons = |
| static_cast<MainThreadScrollingReasons>(0); |
| |
| if (!GetPage()->GetSettings().GetThreadedScrollingEnabled()) |
| reasons |= MainThreadScrollingReason::kThreadedScrollingDisabled; |
| |
| if (!GetPage()->MainFrame()->IsLocalFrame()) |
| return reasons; |
| |
| // TODO(alexmos,kenrb): For OOPIF, local roots that are different from |
| // the main frame can't be used in the calculation, since they use |
| // different compositors with unrelated state, which breaks some of the |
| // calculations below. |
| if (&frame_->LocalFrameRoot() != GetPage()->MainFrame()) |
| return reasons; |
| |
| // Walk the tree to the root. Use the gathered reasons to determine |
| // whether the target frame should be scrolled on main thread regardless |
| // other subframes on the same page. |
| for (Frame* frame = frame_; frame; frame = frame->Tree().Parent()) { |
| if (!frame->IsLocalFrame()) |
| continue; |
| reasons |= |
| ToLocalFrame(frame)->View()->MainThreadScrollingReasonsPerFrame(); |
| } |
| |
| DCHECK(!MainThreadScrollingReason::HasNonCompositedScrollReasons(reasons)); |
| return reasons; |
| } |
| |
| String LocalFrameView::MainThreadScrollingReasonsAsText() { |
| if (RuntimeEnabledFeatures::SlimmingPaintV2Enabled()) { |
| DCHECK(Lifecycle().GetState() >= DocumentLifecycle::kPrePaintClean); |
| |
| // Slimming paint v2 stores main thread scrolling reasons on property |
| // trees instead of in |m_mainThreadScrollingReasons|. |
| MainThreadScrollingReasons reasons = 0; |
| if (const auto* scroll_translation = this->ScrollTranslation()) { |
| reasons |= |
| scroll_translation->ScrollNode()->GetMainThreadScrollingReasons(); |
| } |
| return String( |
| MainThreadScrollingReason::mainThreadScrollingReasonsAsText(reasons) |
| .c_str()); |
| } |
| |
| DCHECK(Lifecycle().GetState() >= DocumentLifecycle::kCompositingClean); |
| if (GraphicsLayer* layer_for_scrolling = |
| LayoutViewportScrollableArea()->LayerForScrolling()) { |
| if (WebLayer* platform_layer = layer_for_scrolling->PlatformLayer()) { |
| String result(MainThreadScrollingReason::mainThreadScrollingReasonsAsText( |
| platform_layer->MainThreadScrollingReasons()) |
| .c_str()); |
| return result; |
| } |
| } |
| |
| String result(MainThreadScrollingReason::mainThreadScrollingReasonsAsText( |
| main_thread_scrolling_reasons_) |
| .c_str()); |
| return result; |
| } |
| |
| IntRect LocalFrameView::RemoteViewportIntersection() { |
| IntRect intersection(GetFrame().RemoteViewportIntersection()); |
| intersection.Move(ScrollOffsetInt()); |
| return intersection; |
| } |
| |
| void LocalFrameView::MapQuadToAncestorFrameIncludingScrollOffset( |
| LayoutRect& rect, |
| const LayoutObject* descendant, |
| const LayoutView* ancestor, |
| MapCoordinatesFlags mode) { |
| FloatQuad mapped_quad = descendant->LocalToAncestorQuad( |
| FloatQuad(FloatRect(rect)), ancestor, mode); |
| rect = LayoutRect(mapped_quad.BoundingBox()); |
| |
| // localToAncestorQuad accounts for scroll offset if it encounters a remote |
| // frame in the ancestor chain, otherwise it needs to be added explicitly. |
| if (GetFrame().LocalFrameRoot() == GetFrame().Tree().Top() || |
| (ancestor && |
| ancestor->GetFrame()->LocalFrameRoot() == GetFrame().LocalFrameRoot())) { |
| LocalFrameView* ancestor_view = |
| (ancestor ? ancestor->GetFrameView() |
| : ToLocalFrame(GetFrame().Tree().Top()).View()); |
| LayoutSize scroll_position = LayoutSize(ancestor_view->GetScrollOffset()); |
| rect.Move(-scroll_position); |
| } |
| } |
| |
| bool LocalFrameView::MapToVisualRectInTopFrameSpace(LayoutRect& rect) { |
| // This is the top-level frame, so no mapping necessary. |
| if (frame_->IsMainFrame()) |
| return true; |
| |
| LayoutRect viewport_intersection_rect(RemoteViewportIntersection()); |
| rect.Intersect(viewport_intersection_rect); |
| if (rect.IsEmpty()) |
| return false; |
| return true; |
| } |
| |
| void LocalFrameView::ApplyTransformForTopFrameSpace( |
| TransformState& transform_state) { |
| // This is the top-level frame, so no mapping necessary. |
| if (frame_->IsMainFrame()) |
| return; |
| |
| LayoutRect viewport_intersection_rect(RemoteViewportIntersection()); |
| transform_state.Move(LayoutSize(-viewport_intersection_rect.X(), |
| -viewport_intersection_rect.Y())); |
| } |
| |
| LayoutUnit LocalFrameView::CaretWidth() const { |
| return LayoutUnit( |
| std::max<float>(1.0, GetChromeClient()->WindowToViewportScalar(1))); |
| } |
| |
| ScrollbarTheme& LocalFrameView::GetPageScrollbarTheme() const { |
| Page* page = frame_->GetPage(); |
| DCHECK(page); |
| |
| return page->GetScrollbarTheme(); |
| } |
| |
| UkmTimeAggregator& LocalFrameView::EnsureUkmTimeAggregator() { |
| if (!ukm_time_aggregator_) { |
| ukm_time_aggregator_.reset(new UkmTimeAggregator( |
| "Blink.UpdateTime", frame_->GetDocument()->UkmSourceID(), |
| frame_->GetDocument()->UkmRecorder(), |
| // Note that changing the order or values of the following vector |
| // requires changing the UkmMetricNames enum. |
| {"Compositing", "IntersectionObservation", "Paint", "PrePaint", |
| "StyleAndLayout"}, |
| TimeDelta::FromSeconds(30))); |
| } |
| return *ukm_time_aggregator_; |
| } |
| |
| } // namespace blink |