| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple 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. |
| * |
| */ |
| |
| #ifndef StyleResolverState_h |
| #define StyleResolverState_h |
| |
| #include "core/CSSPropertyNames.h" |
| #include "core/CoreExport.h" |
| #include "core/animation/css/CSSAnimationUpdate.h" |
| #include "core/css/CSSPendingSubstitutionValue.h" |
| #include "core/css/CSSToLengthConversionData.h" |
| #include "core/css/resolver/CSSToStyleMap.h" |
| #include "core/css/resolver/ElementResolveContext.h" |
| #include "core/css/resolver/ElementStyleResources.h" |
| #include "core/css/resolver/FontBuilder.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/Element.h" |
| #include "core/style/CachedUAStyle.h" |
| #include "core/style/ComputedStyle.h" |
| #include <memory> |
| |
| namespace blink { |
| |
| class FontDescription; |
| |
| class CORE_EXPORT StyleResolverState { |
| STACK_ALLOCATED(); |
| WTF_MAKE_NONCOPYABLE(StyleResolverState); |
| |
| public: |
| StyleResolverState(Document&, |
| const ElementResolveContext&, |
| const ComputedStyle* parent_style, |
| const ComputedStyle* layout_parent_style); |
| StyleResolverState(Document&, |
| Element*, |
| const ComputedStyle* parent_style = nullptr, |
| const ComputedStyle* layout_parent_style = nullptr); |
| ~StyleResolverState(); |
| |
| // In FontFaceSet and CanvasRenderingContext2D, we don't have an element to |
| // grab the document from. This is why we have to store the document |
| // separately. |
| Document& GetDocument() const { return *document_; } |
| // These are all just pass-through methods to ElementResolveContext. |
| Element* GetElement() const { return element_context_.GetElement(); } |
| const ContainerNode* ParentNode() const { |
| return element_context_.ParentNode(); |
| } |
| const ComputedStyle* RootElementStyle() const { |
| return element_context_.RootElementStyle(); |
| } |
| EInsideLink ElementLinkState() const { |
| return element_context_.ElementLinkState(); |
| } |
| bool DistributedToInsertionPoint() const { |
| return element_context_.DistributedToInsertionPoint(); |
| } |
| |
| const ElementResolveContext& ElementContext() const { |
| return element_context_; |
| } |
| |
| void SetStyle(PassRefPtr<ComputedStyle>); |
| const ComputedStyle* Style() const { return style_.Get(); } |
| ComputedStyle* Style() { return style_.Get(); } |
| PassRefPtr<ComputedStyle> TakeStyle() { return std::move(style_); } |
| |
| ComputedStyle& MutableStyleRef() const { return *style_; } |
| const ComputedStyle& StyleRef() const { return MutableStyleRef(); } |
| |
| const CSSToLengthConversionData& CssToLengthConversionData() const { |
| return css_to_length_conversion_data_; |
| } |
| CSSToLengthConversionData FontSizeConversionData() const; |
| |
| void SetConversionFontSizes( |
| const CSSToLengthConversionData::FontSizes& font_sizes) { |
| css_to_length_conversion_data_.SetFontSizes(font_sizes); |
| } |
| void SetConversionZoom(float zoom) { |
| css_to_length_conversion_data_.SetZoom(zoom); |
| } |
| |
| CSSAnimationUpdate& AnimationUpdate() { return animation_update_; } |
| |
| bool IsAnimationInterpolationMapReady() const { |
| return is_animation_interpolation_map_ready_; |
| } |
| void SetIsAnimationInterpolationMapReady() { |
| is_animation_interpolation_map_ready_ = true; |
| } |
| |
| bool IsAnimatingCustomProperties() const { |
| return is_animating_custom_properties_; |
| } |
| void SetIsAnimatingCustomProperties(bool value) { |
| is_animating_custom_properties_ = value; |
| } |
| |
| void SetParentStyle(PassRefPtr<ComputedStyle> parent_style) { |
| parent_style_ = std::move(parent_style); |
| } |
| const ComputedStyle* ParentStyle() const { return parent_style_.Get(); } |
| ComputedStyle* ParentStyle() { return parent_style_.Get(); } |
| |
| void SetLayoutParentStyle(PassRefPtr<ComputedStyle> parent_style) { |
| layout_parent_style_ = std::move(parent_style); |
| } |
| const ComputedStyle* LayoutParentStyle() const { |
| return layout_parent_style_.Get(); |
| } |
| |
| // FIXME: These are effectively side-channel "out parameters" for the various |
| // map functions. When we map from CSS to style objects we use this state |
| // object to track various meta-data about that mapping (e.g. if it's |
| // cache-able). We need to move this data off of StyleResolverState and |
| // closer to the objects it applies to. Possibly separating (immutable) inputs |
| // from (mutable) outputs. |
| void SetApplyPropertyToRegularStyle(bool is_apply) { |
| apply_property_to_regular_style_ = is_apply; |
| } |
| void SetApplyPropertyToVisitedLinkStyle(bool is_apply) { |
| apply_property_to_visited_link_style_ = is_apply; |
| } |
| bool ApplyPropertyToRegularStyle() const { |
| return apply_property_to_regular_style_; |
| } |
| bool ApplyPropertyToVisitedLinkStyle() const { |
| return apply_property_to_visited_link_style_; |
| } |
| |
| void CacheUserAgentBorderAndBackground() { |
| // LayoutTheme only needs the cached style if it has an appearance, |
| // and constructing it is expensive so we avoid it if possible. |
| if (!Style()->HasAppearance()) |
| return; |
| |
| cached_ua_style_ = CachedUAStyle::Create(Style()); |
| } |
| |
| const CachedUAStyle* GetCachedUAStyle() const { |
| return cached_ua_style_.get(); |
| } |
| |
| ElementStyleResources& GetElementStyleResources() { |
| return element_style_resources_; |
| } |
| |
| void LoadPendingResources(); |
| |
| // FIXME: Once styleImage can be made to not take a StyleResolverState |
| // this convenience function should be removed. As-is, without this, call |
| // sites are extremely verbose. |
| StyleImage* GetStyleImage(CSSPropertyID property_id, const CSSValue& value) { |
| return element_style_resources_.GetStyleImage(property_id, value); |
| } |
| |
| FontBuilder& GetFontBuilder() { return font_builder_; } |
| const FontBuilder& GetFontBuilder() const { return font_builder_; } |
| // FIXME: These exist as a primitive way to track mutations to font-related |
| // properties on a ComputedStyle. As designed, these are very error-prone, as |
| // some callers set these directly on the ComputedStyle w/o telling us. |
| // Presumably we'll want to design a better wrapper around ComputedStyle for |
| // tracking these mutations and separate it from StyleResolverState. |
| const FontDescription& ParentFontDescription() const { |
| return parent_style_->GetFontDescription(); |
| } |
| |
| void SetZoom(float f) { |
| if (style_->SetZoom(f)) |
| font_builder_.DidChangeEffectiveZoom(); |
| } |
| void SetEffectiveZoom(float f) { |
| if (style_->SetEffectiveZoom(f)) |
| font_builder_.DidChangeEffectiveZoom(); |
| } |
| void SetWritingMode(WritingMode new_writing_mode) { |
| if (style_->GetWritingMode() == new_writing_mode) { |
| return; |
| } |
| style_->SetWritingMode(new_writing_mode); |
| font_builder_.DidChangeWritingMode(); |
| } |
| void SetTextOrientation(ETextOrientation text_orientation) { |
| if (style_->SetTextOrientation(text_orientation)) |
| font_builder_.DidChangeTextOrientation(); |
| } |
| |
| void SetHasDirAutoAttribute(bool value) { has_dir_auto_attribute_ = value; } |
| bool HasDirAutoAttribute() const { return has_dir_auto_attribute_; } |
| |
| void SetCustomPropertySetForApplyAtRule(const String&, StylePropertySet*); |
| StylePropertySet* CustomPropertySetForApplyAtRule(const String&); |
| |
| HeapHashMap<CSSPropertyID, Member<const CSSValue>>& |
| ParsedPropertiesForPendingSubstitutionCache( |
| const CSSPendingSubstitutionValue&) const; |
| |
| private: |
| ElementResolveContext element_context_; |
| Member<Document> document_; |
| |
| // style_ is the primary output for each element's style resolve. |
| RefPtr<ComputedStyle> style_; |
| |
| CSSToLengthConversionData css_to_length_conversion_data_; |
| |
| // parent_style_ is not always just ElementResolveContext::ParentStyle(), |
| // so we keep it separate. |
| RefPtr<ComputedStyle> parent_style_; |
| // This will almost-always be the same that parent_style_, except in the |
| // presence of display: contents. This is the style against which we have to |
| // do adjustment. |
| RefPtr<const ComputedStyle> layout_parent_style_; |
| |
| CSSAnimationUpdate animation_update_; |
| bool is_animation_interpolation_map_ready_; |
| bool is_animating_custom_properties_; |
| |
| bool apply_property_to_regular_style_; |
| bool apply_property_to_visited_link_style_; |
| bool has_dir_auto_attribute_; |
| |
| FontBuilder font_builder_; |
| |
| std::unique_ptr<CachedUAStyle> cached_ua_style_; |
| |
| ElementStyleResources element_style_resources_; |
| |
| HeapHashMap<String, Member<StylePropertySet>> |
| custom_property_sets_for_apply_at_rule_; |
| |
| mutable HeapHashMap< |
| Member<const CSSPendingSubstitutionValue>, |
| Member<HeapHashMap<CSSPropertyID, Member<const CSSValue>>>> |
| parsed_properties_for_pending_substitution_cache_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // StyleResolverState_h |