computed_style.h | Explore in Territory

/*
 * Copyright (C) 2000 Lars Knoll ([email protected])
 *           (C) 2000 Antti Koivisto ([email protected])
 *           (C) 2000 Dirk Mueller ([email protected])
 * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
 * rights reserved.
 * Copyright (C) 2006 Graham Dennis ([email protected])
 *
 * 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 THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_COMPUTED_STYLE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_COMPUTED_STYLE_H_

#include <algorithm>
#include <memory>

#include "base/check_op.h"
#include "base/gtest_prod_util.h"
#include "base/memory/values_equivalent.h"
#include "base/types/pass_key.h"
#include "third_party/blink/public/mojom/css/preferred_color_scheme.mojom-blink-forward.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/color_scheme_flags.h"
#include "third_party/blink/renderer/core/css/css_property_names.h"
#include "third_party/blink/renderer/core/css/properties/css_bitset.h"
#include "third_party/blink/renderer/core/css/properties/css_property.h"
#include "third_party/blink/renderer/core/css/resolver/matched_properties_cache.h"
#include "third_party/blink/renderer/core/css/style_auto_color.h"
#include "third_party/blink/renderer/core/css/style_color.h"
#include "third_party/blink/renderer/core/layout/geometry/box_sides.h"
#include "third_party/blink/renderer/core/layout/geometry/box_strut.h"
#include "third_party/blink/renderer/core/layout/geometry/logical_size.h"
#include "third_party/blink/renderer/core/layout/geometry/physical_rect.h"
#include "third_party/blink/renderer/core/layout/outline_type.h"
#include "third_party/blink/renderer/core/scroll/scroll_types.h"
#include "third_party/blink/renderer/core/style/border_edge.h"
#include "third_party/blink/renderer/core/style/computed_style_base.h"
#include "third_party/blink/renderer/core/style/computed_style_constants.h"
#include "third_party/blink/renderer/core/style/computed_style_initial_values.h"
#include "third_party/blink/renderer/core/style/cursor_list.h"
#include "third_party/blink/renderer/core/style/display_style.h"
#include "third_party/blink/renderer/core/style/filter_operations.h"
#include "third_party/blink/renderer/core/style/font_size_style.h"
#include "third_party/blink/renderer/core/style/style_cached_data.h"
#include "third_party/blink/renderer/core/style/style_highlight_data.h"
#include "third_party/blink/renderer/core/style/style_scrollbar_color.h"
#include "third_party/blink/renderer/core/style/transform_origin.h"
#include "third_party/blink/renderer/platform/geometry/length.h"
#include "third_party/blink/renderer/platform/geometry/length_box.h"
#include "third_party/blink/renderer/platform/geometry/length_point.h"
#include "third_party/blink/renderer/platform/geometry/length_size.h"
#include "third_party/blink/renderer/platform/graphics/color.h"
#include "third_party/blink/renderer/platform/graphics/path.h"
#include "third_party/blink/renderer/platform/graphics/touch_action.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
#include "third_party/blink/renderer/platform/text/text_direction.h"
#include "third_party/blink/renderer/platform/text/writing_direction_mode.h"
#include "third_party/blink/renderer/platform/text/writing_mode_utils.h"
#include "third_party/blink/renderer/platform/transforms/transform_operations.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/leak_annotations.h"
#include "third_party/blink/renderer/platform/wtf/ref_counted.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"

namespace gfx {
class Transform;
}

namespace blink {

max;

class AppliedTextDecoration;
class ContentData;
class CounterDirectives;
class CSSAnimationData;
class CSSTransitionData;
class CSSVariableData;
class Font;
class Hyphenation;
class LayoutBox;
class LayoutTheme;
class Longhand;
class NinePieceImage;
class ShadowList;
class ShapeValue;
class StyleAdjuster;
class StyleContentAlignmentData;
class StyleDifference;
class StyleImage;
class StyleInheritedVariables;
class StyleRay;
class StyleResolver;
class StyleResolverState;
class StyleSelfAlignmentData;

namespace css_longhand {

class AccentColor;
class BackgroundColor;
class BorderBottomColor;
class BorderLeftColor;
class BorderRightColor;
class BorderTopColor;
class CaretColor;
class Color;
class ColumnRuleColor;
class Fill;
class FloodColor;
class InternalForcedBackgroundColor;
class InternalForcedBorderColor;
class InternalForcedColor;
class InternalForcedOutlineColor;
class InternalForcedVisitedColor;
class InternalVisitedBackgroundColor;
class InternalVisitedBorderBottomColor;
class InternalVisitedBorderLeftColor;
class InternalVisitedBorderRightColor;
class InternalVisitedBorderTopColor;
class InternalVisitedCaretColor;
class InternalVisitedColor;
class InternalVisitedColumnRuleColor;
class InternalVisitedFill;
class InternalVisitedOutlineColor;
class InternalVisitedStroke;
class InternalVisitedTextDecorationColor;
class InternalVisitedTextEmphasisColor;
class InternalVisitedTextFillColor;
class InternalVisitedTextStrokeColor;
class LightingColor;
class OutlineColor;
class StopColor;
class Stroke;
class TextDecorationColor;
class TextEmphasisColor;
class WebkitTapHighlightColor;
class WebkitTextFillColor;
class WebkitTextStrokeColor;

}  // namespace css_longhand

// ComputedStyle stores the computed value [1] for every CSS property on an
// element and provides the interface between the style engine and the rest of
// Blink. It acts as a container where the computed value of every CSS property
// can be retrieved after its created using a builder.
//
//   ComputedStyleBuilder builder(*ComputedStyle::GetInitialStyleSingleton());
//   builder.SetDisplay(EDisplay::kNone); //'display' keyword property
//   auto style = builder.TakeStyle();
//   style->Display();
//
// In addition to storing the computed value of every CSS property,
// ComputedStyle also contains various internal style information. Examples
// include cached_pseudo_element_styles_ (for storing pseudo element styles) and
// has_simple_underline_ (cached indicator flag of text-decoration). These are
// stored on ComputedStyle for two reasons:
//
//  1) They share the same lifetime as ComputedStyle, so it is convenient to
//  store them in the same object rather than a separate object that have to be
//  passed around as well.
//
//  2) Many of these data members can be packed as bit fields, so we use less
//  memory by packing them in this object with other bit fields.
//
// STORAGE:
//
// ComputedStyle is optimized for memory and performance. The data is not
// actually stored directly in ComputedStyle, but rather in a generated parent
// class ComputedStyleBase. This separation of concerns allows us to optimise
// the memory layout without affecting users of ComputedStyle. ComputedStyle
// inherits from ComputedStyleBase. For more about the memory layout, there is
// documentation in ComputedStyleBase and make_computed_style_base.py.
//
// INTERFACE:
//
// For most CSS properties, ComputedStyle provides a consistent interface which
// includes a getter, setter, and resetter (that resets the computed value to
// its initial value). Exceptions include vertical-align, which has a separate
// set of accessors for its length and its keyword components. Apart from
// accessors, ComputedStyle also has a wealth of helper functions.
//
// Because ComputedStyleBase defines simple accessors to every CSS property,
// ComputedStyle inherits these and so they are not redeclared in this file.
// This means that the interface to ComputedStyle is split between this file and
// ComputedStyleBase.h.
//
// [1] https://developer.mozilla.org/en-US/docs/Web/CSS/computed_value
//
// NOTE:
//
// Currently, some properties are stored in ComputedStyle and some in
// ComputedStyleBase. Eventually, the storage of all properties (except SVG
// ones) will be in ComputedStyleBase.
//
// Since this class is huge, do not mark all of it CORE_EXPORT.  Instead,
// export only the methods you need below.
class ComputedStyle final : public ComputedStyleBase { … };

inline bool ComputedStyle::HasAnyPseudoElementStyles() const { … }

inline bool ComputedStyle::HasAnyHighlightPseudoElementStyles() const { … }

class ComputedStyleBuilder final : public ComputedStyleBuilderBase { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_COMPUTED_STYLE_H_
chromium/third_party/blink/renderer/core/style/computed_style.h
