| /* |
| * Copyright (C) 2016 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "core/frame/DOMVisualViewport.h" |
| |
| #include "core/dom/Document.h" |
| #include "core/dom/Element.h" |
| #include "core/frame/FrameView.h" |
| #include "core/frame/LocalDOMWindow.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/frame/VisualViewport.h" |
| #include "core/page/Page.h" |
| #include "core/style/ComputedStyle.h" |
| |
| namespace blink { |
| |
| DOMVisualViewport::DOMVisualViewport(LocalDOMWindow* window) |
| : window_(window) {} |
| |
| DOMVisualViewport::~DOMVisualViewport() {} |
| |
| DEFINE_TRACE(DOMVisualViewport) { |
| visitor->Trace(window_); |
| EventTargetWithInlineData::Trace(visitor); |
| } |
| |
| const AtomicString& DOMVisualViewport::InterfaceName() const { |
| return EventTargetNames::DOMVisualViewport; |
| } |
| |
| ExecutionContext* DOMVisualViewport::GetExecutionContext() const { |
| return window_->GetExecutionContext(); |
| } |
| |
| float DOMVisualViewport::offsetLeft() const { |
| LocalFrame* frame = window_->GetFrame(); |
| if (!frame || !frame->IsMainFrame()) |
| return 0; |
| |
| if (Page* page = frame->GetPage()) |
| return page->GetVisualViewport().OffsetLeft(); |
| |
| return 0; |
| } |
| |
| float DOMVisualViewport::offsetTop() const { |
| LocalFrame* frame = window_->GetFrame(); |
| if (!frame || !frame->IsMainFrame()) |
| return 0; |
| |
| if (Page* page = frame->GetPage()) |
| return page->GetVisualViewport().OffsetTop(); |
| |
| return 0; |
| } |
| |
| float DOMVisualViewport::pageLeft() const { |
| LocalFrame* frame = window_->GetFrame(); |
| if (!frame) |
| return 0; |
| |
| FrameView* view = frame->View(); |
| if (!view) |
| return 0; |
| |
| frame->GetDocument()->UpdateStyleAndLayoutIgnorePendingStylesheets(); |
| float viewport_x = view->GetScrollableArea()->GetScrollOffset().Width(); |
| return AdjustScrollForAbsoluteZoom(viewport_x, frame->PageZoomFactor()); |
| } |
| |
| float DOMVisualViewport::pageTop() const { |
| LocalFrame* frame = window_->GetFrame(); |
| if (!frame) |
| return 0; |
| |
| FrameView* view = frame->View(); |
| if (!view) |
| return 0; |
| |
| frame->GetDocument()->UpdateStyleAndLayoutIgnorePendingStylesheets(); |
| float viewport_y = view->GetScrollableArea()->GetScrollOffset().Height(); |
| return AdjustScrollForAbsoluteZoom(viewport_y, frame->PageZoomFactor()); |
| } |
| |
| double DOMVisualViewport::width() const { |
| LocalFrame* frame = window_->GetFrame(); |
| if (!frame) |
| return 0; |
| |
| if (!frame->IsMainFrame()) { |
| FloatSize viewport_size = window_->GetViewportSize(kExcludeScrollbars); |
| return AdjustForAbsoluteZoom(ExpandedIntSize(viewport_size).Width(), |
| frame->PageZoomFactor()); |
| } |
| |
| if (Page* page = frame->GetPage()) |
| return page->GetVisualViewport().Width(); |
| |
| return 0; |
| } |
| |
| double DOMVisualViewport::height() const { |
| LocalFrame* frame = window_->GetFrame(); |
| if (!frame) |
| return 0; |
| |
| if (!frame->IsMainFrame()) { |
| FloatSize viewport_size = window_->GetViewportSize(kExcludeScrollbars); |
| return AdjustForAbsoluteZoom(ExpandedIntSize(viewport_size).Height(), |
| frame->PageZoomFactor()); |
| } |
| |
| if (Page* page = frame->GetPage()) |
| return page->GetVisualViewport().Height(); |
| |
| return 0; |
| } |
| |
| double DOMVisualViewport::scale() const { |
| LocalFrame* frame = window_->GetFrame(); |
| if (!frame) |
| return 0; |
| |
| if (!frame->IsMainFrame()) |
| return 1; |
| |
| if (Page* page = window_->GetFrame()->GetPage()) |
| return page->GetVisualViewport().ScaleForVisualViewport(); |
| |
| return 0; |
| } |
| |
| } // namespace blink |