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webkit / WebKit / e7faecc4fcb24350646e1305ac734c97b2abfc44 / . / Source / WebCore / rendering / style / RenderStyle.cpp
blob: e397e9cc3274ae3b2d04555b573425613b9bd665 [file] [log] [blame]
/*
* Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2004-2017 Apple Inc. All rights reserved.
* Copyright (C) 2011 Adobe Systems Incorporated. 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 "config.h"
#include "RenderStyle.h"
#include "CSSComputedStyleDeclaration.h"
#include "CSSCustomPropertyValue.h"
#include "CSSParser.h"
#include "CSSPropertyNames.h"
#include "CSSPropertyParser.h"
#include "ContentData.h"
#include "CursorList.h"
#include "FloatRoundedRect.h"
#include "FontCascade.h"
#include "FontSelector.h"
#include "InlineIteratorTextBox.h"
#include "InlineTextBoxStyle.h"
#include "Pagination.h"
#include "PathTraversalState.h"
#include "QuotesData.h"
#include "RenderBlock.h"
#include "RenderObject.h"
#include "RenderTheme.h"
#include "SVGPathData.h"
#include "ScaleTransformOperation.h"
#include "ShadowData.h"
#include "StyleBuilderConverter.h"
#include "StyleImage.h"
#include "StyleInheritedData.h"
#include "StyleResolver.h"
#include "StyleScrollSnapPoints.h"
#include "StyleSelfAlignmentData.h"
#include "StyleTreeResolver.h"
#include "WillChangeData.h"
#include <wtf/MathExtras.h>
#include <wtf/PointerComparison.h>
#include <wtf/StdLibExtras.h>
#include <algorithm>
#if ENABLE(TEXT_AUTOSIZING)
#include <wtf/text/StringHash.h>
#endif
namespace WebCore {
struct SameSizeAsBorderValue {
Color m_color;
float m_width;
int m_restBits;
};
static_assert(sizeof(BorderValue) == sizeof(SameSizeAsBorderValue), "BorderValue should not grow");
struct SameSizeAsRenderStyle {
void* dataRefs[7];
void* ownPtrs[1];
void* dataRefSvgStyle;
struct InheritedFlags {
unsigned m_bitfields[2];
} m_inheritedFlags;
struct NonInheritedFlags {
unsigned m_bitfields[2];
} m_nonInheritedFlags;
#if ASSERT_ENABLED || ENABLE(SECURITY_ASSERTIONS)
bool deletionCheck;
#endif
};
static_assert(sizeof(RenderStyle) == sizeof(SameSizeAsRenderStyle), "RenderStyle should stay small");
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(RenderStyle);
RenderStyle& RenderStyle::defaultStyle()
{
static NeverDestroyed<RenderStyle> style { CreateDefaultStyle };
return style;
}
RenderStyle RenderStyle::create()
{
return clone(defaultStyle());
}
std::unique_ptr<RenderStyle> RenderStyle::createPtr()
{
return clonePtr(defaultStyle());
}
RenderStyle RenderStyle::clone(const RenderStyle& style)
{
return RenderStyle(style, Clone);
}
RenderStyle RenderStyle::cloneIncludingPseudoElements(const RenderStyle& style)
{
auto newStyle = RenderStyle(style, Clone);
newStyle.copyPseudoElementsFrom(style);
return newStyle;
}
std::unique_ptr<RenderStyle> RenderStyle::clonePtr(const RenderStyle& style)
{
return makeUnique<RenderStyle>(style, Clone);
}
RenderStyle RenderStyle::createAnonymousStyleWithDisplay(const RenderStyle& parentStyle, DisplayType display)
{
auto newStyle = create();
newStyle.inheritFrom(parentStyle);
newStyle.inheritUnicodeBidiFrom(&parentStyle);
newStyle.setDisplay(display);
return newStyle;
}
RenderStyle RenderStyle::createStyleInheritingFromPseudoStyle(const RenderStyle& pseudoStyle)
{
ASSERT(pseudoStyle.styleType() == PseudoId::Before || pseudoStyle.styleType() == PseudoId::After);
auto style = create();
style.inheritFrom(pseudoStyle);
return style;
}
RenderStyle::RenderStyle(RenderStyle&&) = default;
RenderStyle& RenderStyle::operator=(RenderStyle&&) = default;
RenderStyle::RenderStyle(CreateDefaultStyleTag)
: m_boxData(StyleBoxData::create())
, m_visualData(StyleVisualData::create())
, m_backgroundData(StyleBackgroundData::create())
, m_surroundData(StyleSurroundData::create())
, m_rareNonInheritedData(StyleRareNonInheritedData::create())
, m_rareInheritedData(StyleRareInheritedData::create())
, m_inheritedData(StyleInheritedData::create())
, m_svgStyle(SVGRenderStyle::create())
{
m_inheritedFlags.emptyCells = static_cast<unsigned>(initialEmptyCells());
m_inheritedFlags.captionSide = static_cast<unsigned>(initialCaptionSide());
m_inheritedFlags.listStyleType = static_cast<unsigned>(initialListStyleType());
m_inheritedFlags.listStylePosition = static_cast<unsigned>(initialListStylePosition());
m_inheritedFlags.visibility = static_cast<unsigned>(initialVisibility());
m_inheritedFlags.textAlign = static_cast<unsigned>(initialTextAlign());
m_inheritedFlags.textTransform = static_cast<unsigned>(initialTextTransform());
m_inheritedFlags.textDecorationLines = initialTextDecorationLine().toRaw();
m_inheritedFlags.cursor = static_cast<unsigned>(initialCursor());
#if ENABLE(CURSOR_VISIBILITY)
m_inheritedFlags.cursorVisibility = static_cast<unsigned>(initialCursorVisibility());
#endif
m_inheritedFlags.direction = static_cast<unsigned>(initialDirection());
m_inheritedFlags.whiteSpace = static_cast<unsigned>(initialWhiteSpace());
m_inheritedFlags.borderCollapse = static_cast<unsigned>(initialBorderCollapse());
m_inheritedFlags.rtlOrdering = static_cast<unsigned>(initialRTLOrdering());
m_inheritedFlags.boxDirection = static_cast<unsigned>(initialBoxDirection());
m_inheritedFlags.printColorAdjust = static_cast<unsigned>(initialPrintColorAdjust());
m_inheritedFlags.pointerEvents = static_cast<unsigned>(initialPointerEvents());
m_inheritedFlags.insideLink = static_cast<unsigned>(InsideLink::NotInside);
m_inheritedFlags.insideDefaultButton = false;
m_inheritedFlags.writingMode = static_cast<unsigned>(initialWritingMode());
#if ENABLE(TEXT_AUTOSIZING)
m_inheritedFlags.autosizeStatus = 0;
#endif
m_nonInheritedFlags.effectiveDisplay = static_cast<unsigned>(initialDisplay());
m_nonInheritedFlags.originalDisplay = static_cast<unsigned>(initialDisplay());
m_nonInheritedFlags.overflowX = static_cast<unsigned>(initialOverflowX());
m_nonInheritedFlags.overflowY = static_cast<unsigned>(initialOverflowY());
m_nonInheritedFlags.verticalAlign = static_cast<unsigned>(initialVerticalAlign());
m_nonInheritedFlags.clear = static_cast<unsigned>(initialClear());
m_nonInheritedFlags.position = static_cast<unsigned>(initialPosition());
m_nonInheritedFlags.unicodeBidi = static_cast<unsigned>(initialUnicodeBidi());
m_nonInheritedFlags.floating = static_cast<unsigned>(initialFloating());
m_nonInheritedFlags.tableLayout = static_cast<unsigned>(initialTableLayout());
m_nonInheritedFlags.hasExplicitlySetBorderBottomLeftRadius = false;
m_nonInheritedFlags.hasExplicitlySetBorderBottomRightRadius = false;
m_nonInheritedFlags.hasExplicitlySetBorderTopLeftRadius = false;
m_nonInheritedFlags.hasExplicitlySetBorderTopRightRadius = false;
m_nonInheritedFlags.hasExplicitlySetDirection = false;
m_nonInheritedFlags.hasExplicitlySetWritingMode = false;
m_nonInheritedFlags.usesViewportUnits = false;
m_nonInheritedFlags.usesContainerUnits = false;
m_nonInheritedFlags.hasExplicitlyInheritedProperties = false;
m_nonInheritedFlags.disallowsFastPathInheritance = false;
m_nonInheritedFlags.isUnique = false;
m_nonInheritedFlags.emptyState = false;
m_nonInheritedFlags.firstChildState = false;
m_nonInheritedFlags.lastChildState = false;
m_nonInheritedFlags.isLink = false;
m_nonInheritedFlags.hasContentNone = false;
m_nonInheritedFlags.styleType = static_cast<unsigned>(PseudoId::None);
m_nonInheritedFlags.pseudoBits = static_cast<unsigned>(PseudoId::None);
static_assert((sizeof(InheritedFlags) <= 8), "InheritedFlags does not grow");
static_assert((sizeof(NonInheritedFlags) <= 8), "NonInheritedFlags does not grow");
}
inline RenderStyle::RenderStyle(const RenderStyle& other, CloneTag)
: m_boxData(other.m_boxData)
, m_visualData(other.m_visualData)
, m_backgroundData(other.m_backgroundData)
, m_surroundData(other.m_surroundData)
, m_rareNonInheritedData(other.m_rareNonInheritedData)
, m_nonInheritedFlags(other.m_nonInheritedFlags)
, m_rareInheritedData(other.m_rareInheritedData)
, m_inheritedData(other.m_inheritedData)
, m_inheritedFlags(other.m_inheritedFlags)
, m_svgStyle(other.m_svgStyle)
{
}
inline RenderStyle::RenderStyle(RenderStyle& a, RenderStyle&& b)
: m_boxData(a.m_boxData.replace(WTFMove(b.m_boxData)))
, m_visualData(a.m_visualData.replace(WTFMove(b.m_visualData)))
, m_backgroundData(a.m_backgroundData.replace(WTFMove(b.m_backgroundData)))
, m_surroundData(a.m_surroundData.replace(WTFMove(b.m_surroundData)))
, m_rareNonInheritedData(a.m_rareNonInheritedData.replace(WTFMove(b.m_rareNonInheritedData)))
, m_nonInheritedFlags(std::exchange(a.m_nonInheritedFlags, b.m_nonInheritedFlags))
, m_rareInheritedData(a.m_rareInheritedData.replace(WTFMove(b.m_rareInheritedData)))
, m_inheritedData(a.m_inheritedData.replace(WTFMove(b.m_inheritedData)))
, m_inheritedFlags(std::exchange(a.m_inheritedFlags, b.m_inheritedFlags))
, m_cachedPseudoStyles(std::exchange(a.m_cachedPseudoStyles, WTFMove(b.m_cachedPseudoStyles)))
, m_svgStyle(a.m_svgStyle.replace(WTFMove(b.m_svgStyle)))
{
}
RenderStyle::~RenderStyle()
{
#if ASSERT_ENABLED || ENABLE(SECURITY_ASSERTIONS)
ASSERT_WITH_SECURITY_IMPLICATION(!m_deletionHasBegun);
m_deletionHasBegun = true;
#endif
}
RenderStyle RenderStyle::replace(RenderStyle&& newStyle)
{
return RenderStyle { *this, WTFMove(newStyle) };
}
static StyleSelfAlignmentData resolvedSelfAlignment(const StyleSelfAlignmentData& value, ItemPosition normalValueBehavior)
{
if (value.position() == ItemPosition::Legacy || value.position() == ItemPosition::Normal || value.position() == ItemPosition::Auto)
return { normalValueBehavior, OverflowAlignment::Default };
return value;
}
StyleSelfAlignmentData RenderStyle::resolvedAlignItems(ItemPosition normalValueBehaviour) const
{
return resolvedSelfAlignment(alignItems(), normalValueBehaviour);
}
StyleSelfAlignmentData RenderStyle::resolvedAlignSelf(const RenderStyle* parentStyle, ItemPosition normalValueBehaviour) const
{
// The auto keyword computes to the parent's align-items computed value.
// We will return the behaviour of 'normal' value if needed, which is specific of each layout model.
if (!parentStyle || alignSelf().position() != ItemPosition::Auto)
return resolvedSelfAlignment(alignSelf(), normalValueBehaviour);
return parentStyle->resolvedAlignItems(normalValueBehaviour);
}
StyleSelfAlignmentData RenderStyle::resolvedJustifyItems(ItemPosition normalValueBehaviour) const
{
return resolvedSelfAlignment(justifyItems(), normalValueBehaviour);
}
StyleSelfAlignmentData RenderStyle::resolvedJustifySelf(const RenderStyle* parentStyle, ItemPosition normalValueBehaviour) const
{
// The auto keyword computes to the parent's justify-items computed value.
// We will return the behaviour of 'normal' value if needed, which is specific of each layout model.
if (!parentStyle || justifySelf().position() != ItemPosition::Auto)
return resolvedSelfAlignment(justifySelf(), normalValueBehaviour);
return parentStyle->resolvedJustifyItems(normalValueBehaviour);
}
static inline StyleContentAlignmentData resolvedContentAlignment(const StyleContentAlignmentData& value, const StyleContentAlignmentData& normalValueBehavior)
{
return (value.position() == ContentPosition::Normal && value.distribution() == ContentDistribution::Default) ? normalValueBehavior : value;
}
StyleContentAlignmentData RenderStyle::resolvedAlignContent(const StyleContentAlignmentData& normalValueBehavior) const
{
// We will return the behaviour of 'normal' value if needed, which is specific of each layout model.
return resolvedContentAlignment(alignContent(), normalValueBehavior);
}
StyleContentAlignmentData RenderStyle::resolvedJustifyContent(const StyleContentAlignmentData& normalValueBehavior) const
{
// We will return the behaviour of 'normal' value if needed, which is specific of each layout model.
return resolvedContentAlignment(justifyContent(), normalValueBehavior);
}
static inline ContentPosition resolvedContentAlignmentPosition(const StyleContentAlignmentData& value, const StyleContentAlignmentData& normalValueBehavior)
{
return (value.position() == ContentPosition::Normal && value.distribution() == ContentDistribution::Default) ? normalValueBehavior.position() : value.position();
}
static inline ContentDistribution resolvedContentAlignmentDistribution(const StyleContentAlignmentData& value, const StyleContentAlignmentData& normalValueBehavior)
{
return (value.position() == ContentPosition::Normal && value.distribution() == ContentDistribution::Default) ? normalValueBehavior.distribution() : value.distribution();
}
ContentPosition RenderStyle::resolvedJustifyContentPosition(const StyleContentAlignmentData& normalValueBehavior) const
{
return resolvedContentAlignmentPosition(justifyContent(), normalValueBehavior);
}
ContentDistribution RenderStyle::resolvedJustifyContentDistribution(const StyleContentAlignmentData& normalValueBehavior) const
{
return resolvedContentAlignmentDistribution(justifyContent(), normalValueBehavior);
}
ContentPosition RenderStyle::resolvedAlignContentPosition(const StyleContentAlignmentData& normalValueBehavior) const
{
return resolvedContentAlignmentPosition(alignContent(), normalValueBehavior);
}
ContentDistribution RenderStyle::resolvedAlignContentDistribution(const StyleContentAlignmentData& normalValueBehavior) const
{
return resolvedContentAlignmentDistribution(alignContent(), normalValueBehavior);
}
void RenderStyle::inheritFrom(const RenderStyle& inheritParent)
{
m_rareInheritedData = inheritParent.m_rareInheritedData;
m_inheritedData = inheritParent.m_inheritedData;
m_inheritedFlags = inheritParent.m_inheritedFlags;
if (m_svgStyle != inheritParent.m_svgStyle)
m_svgStyle.access().inheritFrom(inheritParent.m_svgStyle.get());
}
void RenderStyle::fastPathInheritFrom(const RenderStyle& inheritParent)
{
ASSERT(!disallowsFastPathInheritance());
if (m_inheritedData.ptr() == inheritParent.m_inheritedData.ptr())
return;
// FIXME: Use this mechanism for other properties too, like variables.
if (m_inheritedData->nonFastPathInheritedEqual(*inheritParent.m_inheritedData)) {
m_inheritedData = inheritParent.m_inheritedData;
return;
}
m_inheritedData.access().fastPathInheritFrom(*inheritParent.m_inheritedData);
}
void RenderStyle::copyNonInheritedFrom(const RenderStyle& other)
{
m_boxData = other.m_boxData;
m_visualData = other.m_visualData;
m_backgroundData = other.m_backgroundData;
m_surroundData = other.m_surroundData;
m_rareNonInheritedData = other.m_rareNonInheritedData;
m_nonInheritedFlags.copyNonInheritedFrom(other.m_nonInheritedFlags);
if (m_svgStyle != other.m_svgStyle)
m_svgStyle.access().copyNonInheritedFrom(other.m_svgStyle.get());
ASSERT(zoom() == initialZoom());
}
void RenderStyle::copyContentFrom(const RenderStyle& other)
{
if (!other.m_rareNonInheritedData->content)
return;
m_rareNonInheritedData.access().content = other.m_rareNonInheritedData->content->clone();
}
void RenderStyle::copyPseudoElementsFrom(const RenderStyle& other)
{
if (!other.m_cachedPseudoStyles)
return;
for (auto& pseudoElementStyle : *other.m_cachedPseudoStyles)
addCachedPseudoStyle(makeUnique<RenderStyle>(cloneIncludingPseudoElements(*pseudoElementStyle)));
}
bool RenderStyle::operator==(const RenderStyle& other) const
{
// compare everything except the pseudoStyle pointer
return m_inheritedFlags == other.m_inheritedFlags
&& m_nonInheritedFlags == other.m_nonInheritedFlags
&& m_boxData == other.m_boxData
&& m_visualData == other.m_visualData
&& m_backgroundData == other.m_backgroundData
&& m_surroundData == other.m_surroundData
&& m_rareNonInheritedData == other.m_rareNonInheritedData
&& m_rareInheritedData == other.m_rareInheritedData
&& m_inheritedData == other.m_inheritedData
&& m_svgStyle == other.m_svgStyle;
}
bool RenderStyle::hasUniquePseudoStyle() const
{
if (!m_cachedPseudoStyles || styleType() != PseudoId::None)
return false;
for (auto& pseudoStyle : *m_cachedPseudoStyles) {
if (pseudoStyle->unique())
return true;
}
return false;
}
RenderStyle* RenderStyle::getCachedPseudoStyle(PseudoId pid) const
{
if (!m_cachedPseudoStyles || !m_cachedPseudoStyles->size())
return nullptr;
for (auto& pseudoStyle : *m_cachedPseudoStyles) {
if (pseudoStyle->styleType() == pid)
return pseudoStyle.get();
}
return nullptr;
}
RenderStyle* RenderStyle::addCachedPseudoStyle(std::unique_ptr<RenderStyle> pseudo)
{
if (!pseudo)
return nullptr;
ASSERT(pseudo->styleType() > PseudoId::None);
RenderStyle* result = pseudo.get();
if (!m_cachedPseudoStyles)
m_cachedPseudoStyles = makeUnique<PseudoStyleCache>();
m_cachedPseudoStyles->append(WTFMove(pseudo));
return result;
}
bool RenderStyle::inheritedEqual(const RenderStyle& other) const
{
return m_inheritedFlags == other.m_inheritedFlags
&& m_inheritedData == other.m_inheritedData
&& (m_svgStyle.ptr() == other.m_svgStyle.ptr() || m_svgStyle->inheritedEqual(other.m_svgStyle))
&& m_rareInheritedData == other.m_rareInheritedData;
}
bool RenderStyle::fastPathInheritedEqual(const RenderStyle& other) const
{
if (m_inheritedData.ptr() == other.m_inheritedData.ptr())
return true;
return m_inheritedData->fastPathInheritedEqual(*other.m_inheritedData);
}
bool RenderStyle::nonFastPathInheritedEqual(const RenderStyle& other) const
{
if (m_inheritedFlags != other.m_inheritedFlags)
return false;
if (m_inheritedData.ptr() != other.m_inheritedData.ptr() && !m_inheritedData->nonFastPathInheritedEqual(*other.m_inheritedData))
return false;
if (m_rareInheritedData != other.m_rareInheritedData)
return false;
if (m_svgStyle.ptr() != other.m_svgStyle.ptr() && !m_svgStyle->inheritedEqual(other.m_svgStyle))
return false;
return true;
}
bool RenderStyle::descendantAffectingNonInheritedPropertiesEqual(const RenderStyle& other) const
{
if (m_rareNonInheritedData.ptr() == other.m_rareNonInheritedData.ptr())
return true;
return m_rareNonInheritedData->alignItems == other.m_rareNonInheritedData->alignItems
&& m_rareNonInheritedData->justifyItems == other.m_rareNonInheritedData->justifyItems;
}
bool RenderStyle::borderAndBackgroundEqual(const RenderStyle& other) const
{
return border() == other.border()
&& backgroundLayers() == other.backgroundLayers()
&& backgroundColorEqualsToColorIgnoringVisited(other.backgroundColor());
}
#if ENABLE(TEXT_AUTOSIZING)
static inline unsigned computeFontHash(const FontCascade& font)
{
// FIXME: Would be better to hash the family name rather than hashing a hash of the family name. Also, should this use FontCascadeDescription::familyNameHash?
return computeHash(ASCIICaseInsensitiveHash::hash(font.fontDescription().firstFamily()), font.fontDescription().specifiedSize());
}
unsigned RenderStyle::hashForTextAutosizing() const
{
// FIXME: Not a very smart hash. Could be improved upon. See <https://bugs.webkit.org/show_bug.cgi?id=121131>.
unsigned hash = m_rareNonInheritedData->effectiveAppearance;
hash ^= m_rareNonInheritedData->lineClamp.value();
hash ^= m_rareInheritedData->overflowWrap;
hash ^= m_rareInheritedData->nbspMode;
hash ^= m_rareInheritedData->lineBreak;
hash ^= WTF::FloatHash<float>::hash(m_inheritedData->specifiedLineHeight.value());
hash ^= computeFontHash(m_inheritedData->fontCascade);
hash ^= WTF::FloatHash<float>::hash(m_inheritedData->horizontalBorderSpacing);
hash ^= WTF::FloatHash<float>::hash(m_inheritedData->verticalBorderSpacing);
hash ^= m_inheritedFlags.boxDirection;
hash ^= m_inheritedFlags.rtlOrdering;
hash ^= m_nonInheritedFlags.position;
hash ^= m_nonInheritedFlags.floating;
hash ^= m_rareNonInheritedData->textOverflow;
hash ^= m_rareInheritedData->textSecurity;
return hash;
}
bool RenderStyle::equalForTextAutosizing(const RenderStyle& other) const
{
return m_rareNonInheritedData->effectiveAppearance == other.m_rareNonInheritedData->effectiveAppearance
&& m_rareNonInheritedData->lineClamp == other.m_rareNonInheritedData->lineClamp
&& m_rareInheritedData->textSizeAdjust == other.m_rareInheritedData->textSizeAdjust
&& m_rareInheritedData->overflowWrap == other.m_rareInheritedData->overflowWrap
&& m_rareInheritedData->nbspMode == other.m_rareInheritedData->nbspMode
&& m_rareInheritedData->lineBreak == other.m_rareInheritedData->lineBreak
&& m_rareInheritedData->textSecurity == other.m_rareInheritedData->textSecurity
&& m_inheritedData->specifiedLineHeight == other.m_inheritedData->specifiedLineHeight
&& m_inheritedData->fontCascade.equalForTextAutoSizing(other.m_inheritedData->fontCascade)
&& m_inheritedData->horizontalBorderSpacing == other.m_inheritedData->horizontalBorderSpacing
&& m_inheritedData->verticalBorderSpacing == other.m_inheritedData->verticalBorderSpacing
&& m_inheritedFlags.boxDirection == other.m_inheritedFlags.boxDirection
&& m_inheritedFlags.rtlOrdering == other.m_inheritedFlags.rtlOrdering
&& m_nonInheritedFlags.position == other.m_nonInheritedFlags.position
&& m_nonInheritedFlags.floating == other.m_nonInheritedFlags.floating
&& m_rareNonInheritedData->textOverflow == other.m_rareNonInheritedData->textOverflow;
}
bool RenderStyle::isIdempotentTextAutosizingCandidate(std::optional<AutosizeStatus> overrideStatus) const
{
// Refer to <rdar://problem/51826266> for more information regarding how this function was generated.
auto fields = OptionSet<AutosizeStatus::Fields>::fromRaw(m_inheritedFlags.autosizeStatus);
if (overrideStatus)
fields = overrideStatus->fields();
if (fields.contains(AutosizeStatus::Fields::AvoidSubtree))
return false;
const float smallMinimumDifferenceThresholdBetweenLineHeightAndSpecifiedFontSizeForBoostingText = 5;
const float largeMinimumDifferenceThresholdBetweenLineHeightAndSpecifiedFontSizeForBoostingText = 25;
if (fields.contains(AutosizeStatus::Fields::FixedHeight)) {
if (fields.contains(AutosizeStatus::Fields::FixedWidth)) {
if (whiteSpace() == WhiteSpace::NoWrap) {
if (width().isFixed())
return false;
if (height().isFixed() && specifiedLineHeight().isFixed()) {
float specifiedSize = specifiedFontSize();
if (height().value() == specifiedSize && specifiedLineHeight().value() == specifiedSize)
return false;
}
return true;
}
if (fields.contains(AutosizeStatus::Fields::Floating)) {
if (specifiedLineHeight().isFixed() && height().isFixed()) {
float specifiedSize = specifiedFontSize();
if (specifiedLineHeight().value() - specifiedSize > smallMinimumDifferenceThresholdBetweenLineHeightAndSpecifiedFontSizeForBoostingText
&& height().value() - specifiedSize > smallMinimumDifferenceThresholdBetweenLineHeightAndSpecifiedFontSizeForBoostingText) {
return true;
}
}
return false;
}
if (fields.contains(AutosizeStatus::Fields::OverflowXHidden))
return false;
return true;
}
if (fields.contains(AutosizeStatus::Fields::OverflowXHidden)) {
if (fields.contains(AutosizeStatus::Fields::Floating))
return false;
return true;
}
return true;
}
if (width().isFixed()) {
if (breakWords())
return true;
return false;
}
if (textSizeAdjust().isPercentage() && textSizeAdjust().percentage() == 100) {
if (fields.contains(AutosizeStatus::Fields::Floating))
return true;
if (fields.contains(AutosizeStatus::Fields::FixedWidth))
return true;
if (specifiedLineHeight().isFixed() && specifiedLineHeight().value() - specifiedFontSize() > largeMinimumDifferenceThresholdBetweenLineHeightAndSpecifiedFontSizeForBoostingText)
return true;
return false;
}
if (hasBackgroundImage() && backgroundRepeatX() == FillRepeat::NoRepeat && backgroundRepeatY() == FillRepeat::NoRepeat)
return false;
return true;
}
AutosizeStatus RenderStyle::autosizeStatus() const
{
return OptionSet<AutosizeStatus::Fields>::fromRaw(m_inheritedFlags.autosizeStatus);
}
void RenderStyle::setAutosizeStatus(AutosizeStatus autosizeStatus)
{
m_inheritedFlags.autosizeStatus = autosizeStatus.fields().toRaw();
}
#endif // ENABLE(TEXT_AUTOSIZING)
static bool positionChangeIsMovementOnly(const LengthBox& a, const LengthBox& b, const Length& width)
{
// If any unit types are different, then we can't guarantee
// that this was just a movement.
if (a.left().type() != b.left().type()
|| a.right().type() != b.right().type()
|| a.top().type() != b.top().type()
|| a.bottom().type() != b.bottom().type())
return false;
// Only one unit can be non-auto in the horizontal direction and
// in the vertical direction. Otherwise the adjustment of values
// is changing the size of the box.
if (!a.left().isIntrinsicOrAuto() && !a.right().isIntrinsicOrAuto())
return false;
if (!a.top().isIntrinsicOrAuto() && !a.bottom().isIntrinsicOrAuto())
return false;
// If our width is auto and left or right is specified then this
// is not just a movement - we need to resize to our container.
if ((!a.left().isIntrinsicOrAuto() || !a.right().isIntrinsicOrAuto()) && width.isIntrinsicOrAuto())
return false;
// One of the units is fixed or percent in both directions and stayed
// that way in the new style. Therefore all we are doing is moving.
return true;
}
inline bool RenderStyle::changeAffectsVisualOverflow(const RenderStyle& other) const
{
if (m_rareNonInheritedData.ptr() != other.m_rareNonInheritedData.ptr()
&& !arePointingToEqualData(m_rareNonInheritedData->boxShadow, other.m_rareNonInheritedData->boxShadow))
return true;
if (m_rareInheritedData.ptr() != other.m_rareInheritedData.ptr()
&& !arePointingToEqualData(m_rareInheritedData->textShadow, other.m_rareInheritedData->textShadow))
return true;
if (m_inheritedFlags.textDecorationLines != other.m_inheritedFlags.textDecorationLines
|| m_rareNonInheritedData->textDecorationStyle != other.m_rareNonInheritedData->textDecorationStyle
|| m_rareInheritedData->textDecorationThickness != other.m_rareInheritedData->textDecorationThickness
|| m_rareInheritedData->textUnderlineOffset != other.m_rareInheritedData->textUnderlineOffset
|| m_rareInheritedData->textUnderlinePosition != other.m_rareInheritedData->textUnderlinePosition) {
// Underlines are always drawn outside of their textbox bounds when text-underline-position: under;
// is specified. We can take an early out here.
if (textUnderlinePosition() == TextUnderlinePosition::Under || other.textUnderlinePosition() == TextUnderlinePosition::Under)
return true;
return visualOverflowForDecorations(*this) != visualOverflowForDecorations(other);
}
auto hasOutlineInVisualOverflow = this->hasOutlineInVisualOverflow();
auto otherHasOutlineInVisualOverflow = other.hasOutlineInVisualOverflow();
if (hasOutlineInVisualOverflow != otherHasOutlineInVisualOverflow
|| (hasOutlineInVisualOverflow && otherHasOutlineInVisualOverflow && outlineSize() != other.outlineSize()))
return true;
return false;
}
static bool rareNonInheritedDataChangeRequiresLayout(const StyleRareNonInheritedData& first, const StyleRareNonInheritedData& second, OptionSet<StyleDifferenceContextSensitiveProperty>& changedContextSensitiveProperties)
{
ASSERT(&first != &second);
if (first.effectiveAppearance != second.effectiveAppearance
|| first.lineClamp != second.lineClamp
|| first.initialLetter != second.initialLetter
|| first.textOverflow != second.textOverflow)
return true;
if (first.shapeMargin != second.shapeMargin)
return true;
if (first.deprecatedFlexibleBox != second.deprecatedFlexibleBox)
return true;
if (first.flexibleBox != second.flexibleBox)
return true;
if (first.columnGap != second.columnGap || first.rowGap != second.rowGap)
return true;
if (first.order != second.order
|| first.alignContent != second.alignContent
|| first.alignItems != second.alignItems
|| first.alignSelf != second.alignSelf
|| first.justifyContent != second.justifyContent
|| first.justifyItems != second.justifyItems
|| first.justifySelf != second.justifySelf)
return true;
if (!arePointingToEqualData(first.boxReflect, second.boxReflect))
return true;
// If the counter directives change, trigger a relayout to re-calculate counter values and rebuild the counter node tree.
if (!arePointingToEqualData(first.counterDirectives, second.counterDirectives))
return true;
if (first.multiCol != second.multiCol)
return true;
if (first.transform.ptr() != second.transform.ptr()) {
if (first.transform->hasTransform() != second.transform->hasTransform())
return true;
if (*first.transform != *second.transform) {
changedContextSensitiveProperties.add(StyleDifferenceContextSensitiveProperty::Transform);
// Don't return; keep looking for another change
}
}
if (!arePointingToEqualData(first.scale, second.scale)
|| !arePointingToEqualData(first.rotate, second.rotate)
|| !arePointingToEqualData(first.translate, second.translate))
changedContextSensitiveProperties.add(StyleDifferenceContextSensitiveProperty::Transform);
if (!arePointingToEqualData(first.offsetPath, second.offsetPath)
|| first.offsetPosition != second.offsetPosition
|| first.offsetDistance != second.offsetDistance
|| first.offsetAnchor != second.offsetAnchor
|| first.offsetRotate != second.offsetRotate)
changedContextSensitiveProperties.add(StyleDifferenceContextSensitiveProperty::Transform);
if (first.grid != second.grid
|| first.gridItem != second.gridItem)
return true;
if (!arePointingToEqualData(first.willChange, second.willChange)) {
changedContextSensitiveProperties.add(StyleDifferenceContextSensitiveProperty::WillChange);
// Don't return; keep looking for another change
}
if (first.breakBefore != second.breakBefore
|| first.breakAfter != second.breakAfter
|| first.breakInside != second.breakInside)
return true;
if (first.hasOpacity() != second.hasOpacity()) {
// FIXME: We would like to use SimplifiedLayout here, but we can't quite do that yet.
// We need to make sure SimplifiedLayout can operate correctly on RenderInlines (we will need
// to add a selfNeedsSimplifiedLayout bit in order to not get confused and taint every line).
// In addition we need to solve the floating object issue when layers come and go. Right now
// a full layout is necessary to keep floating object lists sane.
return true;
}
#if ENABLE(CSS_COMPOSITING)
if (first.isolation != second.isolation) {
// Ideally this would trigger a cheaper layout that just updates layer z-order trees (webkit.org/b/190088).
return true;
}
#endif
if (first.hasFilters() != second.hasFilters())
return true;
#if ENABLE(FILTERS_LEVEL_2)
if (first.hasBackdropFilters() != second.hasBackdropFilters())
return true;
#endif
if (first.aspectRatioType != second.aspectRatioType
|| first.aspectRatioWidth != second.aspectRatioWidth
|| first.aspectRatioHeight != second.aspectRatioHeight) {
return true;
}
if (first.inputSecurity != second.inputSecurity)
return true;
if (first.effectiveContainment().contains(Containment::Size) != second.effectiveContainment().contains(Containment::Size)
|| first.effectiveContainment().contains(Containment::InlineSize) != second.effectiveContainment().contains(Containment::InlineSize))
return true;
if (first.scrollPadding != second.scrollPadding)
return true;
if (first.scrollSnapType != second.scrollSnapType)
return true;
return false;
}
static bool rareInheritedDataChangeRequiresLayout(const StyleRareInheritedData& first, const StyleRareInheritedData& second)
{
ASSERT(&first != &second);
if (first.indent != second.indent
|| first.textAlignLast != second.textAlignLast
|| first.textJustify != second.textJustify
|| first.textIndentLine != second.textIndentLine
|| first.effectiveZoom != second.effectiveZoom
|| first.textZoom != second.textZoom
#if ENABLE(TEXT_AUTOSIZING)
|| first.textSizeAdjust != second.textSizeAdjust
#endif
|| first.wordBreak != second.wordBreak
|| first.overflowWrap != second.overflowWrap
|| first.nbspMode != second.nbspMode
|| first.lineBreak != second.lineBreak
|| first.textSecurity != second.textSecurity
|| first.hyphens != second.hyphens
|| first.hyphenationLimitBefore != second.hyphenationLimitBefore
|| first.hyphenationLimitAfter != second.hyphenationLimitAfter
|| first.hyphenationString != second.hyphenationString
|| first.rubyPosition != second.rubyPosition
|| first.textCombine != second.textCombine
|| first.textEmphasisMark != second.textEmphasisMark
|| first.textEmphasisPosition != second.textEmphasisPosition
|| first.textEmphasisCustomMark != second.textEmphasisCustomMark
|| first.textOrientation != second.textOrientation
|| first.tabSize != second.tabSize
|| first.lineBoxContain != second.lineBoxContain
|| first.lineGrid != second.lineGrid
|| first.imageOrientation != second.imageOrientation
#if ENABLE(CSS_IMAGE_RESOLUTION)
|| first.imageResolutionSource != second.imageResolutionSource
|| first.imageResolutionSnap != second.imageResolutionSnap
|| first.imageResolution != second.imageResolution
#endif
|| first.lineSnap != second.lineSnap
|| first.lineAlign != second.lineAlign
|| first.hangingPunctuation != second.hangingPunctuation
#if ENABLE(OVERFLOW_SCROLLING_TOUCH)
|| first.useTouchOverflowScrolling != second.useTouchOverflowScrolling
#endif
|| first.listStyleImage != second.listStyleImage) // FIXME: needs arePointingToEqualData()?
return true;
if (first.textStrokeWidth != second.textStrokeWidth)
return true;
// These properties affect the cached stroke bounding box rects.
if (first.capStyle != second.capStyle
|| first.joinStyle != second.joinStyle
|| first.strokeWidth != second.strokeWidth
|| first.miterLimit != second.miterLimit)
return true;
if (!arePointingToEqualData(first.quotes, second.quotes))
return true;
return false;
}
bool RenderStyle::changeRequiresLayout(const RenderStyle& other, OptionSet<StyleDifferenceContextSensitiveProperty>& changedContextSensitiveProperties) const
{
if (m_boxData.ptr() != other.m_boxData.ptr()) {
if (m_boxData->width() != other.m_boxData->width()
|| m_boxData->minWidth() != other.m_boxData->minWidth()
|| m_boxData->maxWidth() != other.m_boxData->maxWidth()
|| m_boxData->height() != other.m_boxData->height()
|| m_boxData->minHeight() != other.m_boxData->minHeight()
|| m_boxData->maxHeight() != other.m_boxData->maxHeight())
return true;
if (m_boxData->verticalAlign() != other.m_boxData->verticalAlign())
return true;
if (m_boxData->boxSizing() != other.m_boxData->boxSizing())
return true;
if (m_boxData->hasAutoUsedZIndex() != other.m_boxData->hasAutoUsedZIndex())
return true;
}
if (m_surroundData.ptr() != other.m_surroundData.ptr()) {
if (m_surroundData->margin != other.m_surroundData->margin)
return true;
if (m_surroundData->padding != other.m_surroundData->padding)
return true;
// If our border widths change, then we need to layout. Other changes to borders only necessitate a repaint.
if (borderLeftWidth() != other.borderLeftWidth()
|| borderTopWidth() != other.borderTopWidth()
|| borderBottomWidth() != other.borderBottomWidth()
|| borderRightWidth() != other.borderRightWidth())
return true;
if (position() != PositionType::Static) {
if (m_surroundData->offset != other.m_surroundData->offset) {
// FIXME: We would like to use SimplifiedLayout for relative positioning, but we can't quite do that yet.
// We need to make sure SimplifiedLayout can operate correctly on RenderInlines (we will need
// to add a selfNeedsSimplifiedLayout bit in order to not get confused and taint every line).
if (position() != PositionType::Absolute)
return true;
// Optimize for the case where a positioned layer is moving but not changing size.
if (!positionChangeIsMovementOnly(m_surroundData->offset, other.m_surroundData->offset, m_boxData->width()))
return true;
}
}
}
// FIXME: We should add an optimized form of layout that just recomputes visual overflow.
if (changeAffectsVisualOverflow(other))
return true;
if (m_rareNonInheritedData.ptr() != other.m_rareNonInheritedData.ptr()
&& rareNonInheritedDataChangeRequiresLayout(*m_rareNonInheritedData, *other.m_rareNonInheritedData, changedContextSensitiveProperties))
return true;
if (m_rareInheritedData.ptr() != other.m_rareInheritedData.ptr()
&& rareInheritedDataChangeRequiresLayout(*m_rareInheritedData, *other.m_rareInheritedData))
return true;
if (m_inheritedData.ptr() != other.m_inheritedData.ptr()) {
if (m_inheritedData->lineHeight != other.m_inheritedData->lineHeight
#if ENABLE(TEXT_AUTOSIZING)
|| m_inheritedData->specifiedLineHeight != other.m_inheritedData->specifiedLineHeight
#endif
|| m_inheritedData->fontCascade != other.m_inheritedData->fontCascade
|| m_inheritedData->horizontalBorderSpacing != other.m_inheritedData->horizontalBorderSpacing
|| m_inheritedData->verticalBorderSpacing != other.m_inheritedData->verticalBorderSpacing)
return true;
}
if (m_inheritedFlags.boxDirection != other.m_inheritedFlags.boxDirection
|| m_inheritedFlags.rtlOrdering != other.m_inheritedFlags.rtlOrdering
|| m_nonInheritedFlags.position != other.m_nonInheritedFlags.position
|| m_nonInheritedFlags.floating != other.m_nonInheritedFlags.floating
|| m_nonInheritedFlags.originalDisplay != other.m_nonInheritedFlags.originalDisplay
|| m_nonInheritedFlags.verticalAlign != other.m_nonInheritedFlags.verticalAlign)
return true;
if (static_cast<DisplayType>(m_nonInheritedFlags.effectiveDisplay) >= DisplayType::Table) {
if (m_inheritedFlags.borderCollapse != other.m_inheritedFlags.borderCollapse
|| m_inheritedFlags.emptyCells != other.m_inheritedFlags.emptyCells
|| m_inheritedFlags.captionSide != other.m_inheritedFlags.captionSide
|| m_nonInheritedFlags.tableLayout != other.m_nonInheritedFlags.tableLayout)
return true;
// In the collapsing border model, 'hidden' suppresses other borders, while 'none'
// does not, so these style differences can be width differences.
if (m_inheritedFlags.borderCollapse
&& ((borderTopStyle() == BorderStyle::Hidden && other.borderTopStyle() == BorderStyle::None)
|| (borderTopStyle() == BorderStyle::None && other.borderTopStyle() == BorderStyle::Hidden)
|| (borderBottomStyle() == BorderStyle::Hidden && other.borderBottomStyle() == BorderStyle::None)
|| (borderBottomStyle() == BorderStyle::None && other.borderBottomStyle() == BorderStyle::Hidden)
|| (borderLeftStyle() == BorderStyle::Hidden && other.borderLeftStyle() == BorderStyle::None)
|| (borderLeftStyle() == BorderStyle::None && other.borderLeftStyle() == BorderStyle::Hidden)
|| (borderRightStyle() == BorderStyle::Hidden && other.borderRightStyle() == BorderStyle::None)
|| (borderRightStyle() == BorderStyle::None && other.borderRightStyle() == BorderStyle::Hidden)))
return true;
}
if (static_cast<DisplayType>(m_nonInheritedFlags.effectiveDisplay) == DisplayType::ListItem) {
if (m_inheritedFlags.listStyleType != other.m_inheritedFlags.listStyleType
|| m_inheritedFlags.listStylePosition != other.m_inheritedFlags.listStylePosition)
return true;
}
if (m_inheritedFlags.textAlign != other.m_inheritedFlags.textAlign
|| m_inheritedFlags.textTransform != other.m_inheritedFlags.textTransform
|| m_inheritedFlags.direction != other.m_inheritedFlags.direction
|| m_inheritedFlags.whiteSpace != other.m_inheritedFlags.whiteSpace
|| m_nonInheritedFlags.clear != other.m_nonInheritedFlags.clear
|| m_nonInheritedFlags.unicodeBidi != other.m_nonInheritedFlags.unicodeBidi)
return true;
// Check block flow direction.
if (m_inheritedFlags.writingMode != other.m_inheritedFlags.writingMode)
return true;
// Overflow returns a layout hint.
if (m_nonInheritedFlags.overflowX != other.m_nonInheritedFlags.overflowX
|| m_nonInheritedFlags.overflowY != other.m_nonInheritedFlags.overflowY)
return true;
if ((visibility() == Visibility::Collapse) != (other.visibility() == Visibility::Collapse))
return true;
bool hasFirstLineStyle = hasPseudoStyle(PseudoId::FirstLine);
if (hasFirstLineStyle != other.hasPseudoStyle(PseudoId::FirstLine))
return true;
if (hasFirstLineStyle) {
auto* firstLineStyle = getCachedPseudoStyle(PseudoId::FirstLine);
if (!firstLineStyle)
return true;
auto* otherFirstLineStyle = other.getCachedPseudoStyle(PseudoId::FirstLine);
if (!otherFirstLineStyle)
return true;
// FIXME: Not all first line style changes actually need layout.
if (*firstLineStyle != *otherFirstLineStyle)
return true;
}
return false;
}
bool RenderStyle::changeRequiresPositionedLayoutOnly(const RenderStyle& other, OptionSet<StyleDifferenceContextSensitiveProperty>&) const
{
if (position() == PositionType::Static)
return false;
if (m_surroundData->offset != other.m_surroundData->offset) {
// Optimize for the case where a positioned layer is moving but not changing size.
if (position() == PositionType::Absolute && positionChangeIsMovementOnly(m_surroundData->offset, other.m_surroundData->offset, m_boxData->width()))
return true;
}
return false;
}
static bool rareNonInheritedDataChangeRequiresLayerRepaint(const StyleRareNonInheritedData& first, const StyleRareNonInheritedData& second, OptionSet<StyleDifferenceContextSensitiveProperty>& changedContextSensitiveProperties)
{
#if ENABLE(CSS_COMPOSITING)
if (first.effectiveBlendMode != second.effectiveBlendMode)
return true;
#endif
if (first.opacity != second.opacity) {
changedContextSensitiveProperties.add(StyleDifferenceContextSensitiveProperty::Opacity);
// Don't return true; keep looking for another change.
}
if (first.filter != second.filter) {
changedContextSensitiveProperties.add(StyleDifferenceContextSensitiveProperty::Filter);
// Don't return true; keep looking for another change.
}
#if ENABLE(FILTERS_LEVEL_2)
if (first.backdropFilter != second.backdropFilter) {
changedContextSensitiveProperties.add(StyleDifferenceContextSensitiveProperty::Filter);
// Don't return true; keep looking for another change.
}
#endif
// FIXME: In SVG this needs to trigger a layout.
if (first.mask != second.mask || first.maskBoxImage != second.maskBoxImage)
return true;
return false;
}
bool RenderStyle::changeRequiresLayerRepaint(const RenderStyle& other, OptionSet<StyleDifferenceContextSensitiveProperty>& changedContextSensitiveProperties) const
{
// Style::Resolver has ensured that zIndex is non-auto only if it's applicable.
if (m_boxData.ptr() != other.m_boxData.ptr()) {
if (m_boxData->usedZIndex() != other.m_boxData->usedZIndex() || m_boxData->hasAutoUsedZIndex() != other.m_boxData->hasAutoUsedZIndex())
return true;
}
if (position() != PositionType::Static) {
if (m_visualData.ptr() != other.m_visualData.ptr()) {
if (m_visualData->clip != other.m_visualData->clip || m_visualData->hasClip != other.m_visualData->hasClip) {
changedContextSensitiveProperties.add(StyleDifferenceContextSensitiveProperty::ClipRect);
return true;
}
}
}
if (m_rareNonInheritedData.ptr() != other.m_rareNonInheritedData.ptr()
&& rareNonInheritedDataChangeRequiresLayerRepaint(*m_rareNonInheritedData, *other.m_rareNonInheritedData, changedContextSensitiveProperties))
return true;
return false;
}
static bool requiresPainting(const RenderStyle& style)
{
if (style.visibility() == Visibility::Hidden)
return false;
if (!style.opacity())
return false;
return true;
}
static bool rareNonInheritedDataChangeRequiresRepaint(const StyleRareNonInheritedData& first, const StyleRareNonInheritedData& second, OptionSet<StyleDifferenceContextSensitiveProperty>& changedContextSensitiveProperties)
{
if (first.userDrag != second.userDrag
|| first.objectFit != second.objectFit
|| first.objectPosition != second.objectPosition)
return true;
if (first.isNotFinal != second.isNotFinal)
return true;
if (first.shapeOutside != second.shapeOutside)
return true;
// FIXME: this should probably be moved to changeRequiresLayerRepaint().
if (first.clipPath != second.clipPath) {
changedContextSensitiveProperties.add(StyleDifferenceContextSensitiveProperty::ClipPath);
// Don't return true; keep looking for another change.
}
return false;
}
static bool rareInheritedDataChangeRequiresRepaint(const StyleRareInheritedData& first, const StyleRareInheritedData& second)
{
return first.userModify != second.userModify
|| first.userSelect != second.userSelect
|| first.appleColorFilter != second.appleColorFilter
|| first.imageRendering != second.imageRendering
|| first.accentColor != second.accentColor
#if ENABLE(DARK_MODE_CSS)
|| first.colorScheme != second.colorScheme
#endif
;
}
#if ENABLE(CSS_PAINTING_API)
void RenderStyle::addCustomPaintWatchProperty(const AtomString& name)
{
auto& data = m_rareNonInheritedData.access();
data.customPaintWatchedProperties.add(name);
}
inline static bool changedCustomPaintWatchedProperty(const RenderStyle& a, const StyleRareNonInheritedData& aData, const RenderStyle& b, const StyleRareNonInheritedData& bData)
{
auto& propertiesA = aData.customPaintWatchedProperties;
auto& propertiesB = bData.customPaintWatchedProperties;
if (UNLIKELY(!propertiesA.isEmpty() || !propertiesB.isEmpty())) {
// FIXME: We should not need to use ComputedStyleExtractor here.
ComputedStyleExtractor extractor((Element*) nullptr);
for (auto& watchPropertiesMap : { propertiesA, propertiesB }) {
for (auto& name : watchPropertiesMap) {
RefPtr<CSSValue> valueA;
RefPtr<CSSValue> valueB;
if (isCustomPropertyName(name)) {
if (a.getCustomProperty(name))
valueA = CSSCustomPropertyValue::create(*a.getCustomProperty(name));
if (b.getCustomProperty(name))
valueB = CSSCustomPropertyValue::create(*b.getCustomProperty(name));
} else {
CSSPropertyID propertyID = cssPropertyID(name);
if (!propertyID)
continue;
valueA = extractor.valueForPropertyInStyle(a, propertyID);
valueB = extractor.valueForPropertyInStyle(b, propertyID);
}
if ((valueA && !valueB) || (!valueA && valueB))
return true;
if (!valueA)
continue;
if (!(*valueA == *valueB))
return true;
}
}
}
return false;
}
#endif
bool RenderStyle::changeRequiresRepaint(const RenderStyle& other, OptionSet<StyleDifferenceContextSensitiveProperty>& changedContextSensitiveProperties) const
{
if (!requiresPainting(*this) && !requiresPainting(other))
return false;
if (m_inheritedFlags.visibility != other.m_inheritedFlags.visibility
|| m_inheritedFlags.printColorAdjust != other.m_inheritedFlags.printColorAdjust
|| m_inheritedFlags.insideLink != other.m_inheritedFlags.insideLink
|| m_inheritedFlags.insideDefaultButton != other.m_inheritedFlags.insideDefaultButton)
return true;
bool currentColorDiffers = m_inheritedData->color != other.m_inheritedData->color;
if (m_backgroundData.ptr() != other.m_backgroundData.ptr()) {
if (!m_backgroundData->isEquivalentForPainting(*other.m_backgroundData, currentColorDiffers))
return true;
}
if (m_surroundData.ptr() != other.m_surroundData.ptr()) {
if (!m_surroundData->border.isEquivalentForPainting(other.m_surroundData->border, currentColorDiffers))
return true;
}
if (m_rareNonInheritedData.ptr() != other.m_rareNonInheritedData.ptr()
&& rareNonInheritedDataChangeRequiresRepaint(*m_rareNonInheritedData, *other.m_rareNonInheritedData, changedContextSensitiveProperties))
return true;
if (m_rareInheritedData.ptr() != other.m_rareInheritedData.ptr()
&& rareInheritedDataChangeRequiresRepaint(*m_rareInheritedData, *other.m_rareInheritedData))
return true;
#if ENABLE(CSS_PAINTING_API)
if (changedCustomPaintWatchedProperty(*this, *m_rareNonInheritedData, other, *other.m_rareNonInheritedData))
return true;
#endif
return false;
}
bool RenderStyle::changeRequiresRepaintIfText(const RenderStyle& other, OptionSet<StyleDifferenceContextSensitiveProperty>&) const
{
if (m_inheritedData->color != other.m_inheritedData->color
|| m_inheritedFlags.textDecorationLines != other.m_inheritedFlags.textDecorationLines
|| m_visualData->textDecorationLine != other.m_visualData->textDecorationLine
|| m_rareNonInheritedData->textDecorationStyle != other.m_rareNonInheritedData->textDecorationStyle
|| m_rareNonInheritedData->textDecorationColor != other.m_rareNonInheritedData->textDecorationColor
|| m_rareInheritedData->textDecorationSkipInk != other.m_rareInheritedData->textDecorationSkipInk
|| m_rareInheritedData->textFillColor != other.m_rareInheritedData->textFillColor
|| m_rareInheritedData->textStrokeColor != other.m_rareInheritedData->textStrokeColor
|| m_rareInheritedData->textEmphasisColor != other.m_rareInheritedData->textEmphasisColor
|| m_rareInheritedData->textEmphasisFill != other.m_rareInheritedData->textEmphasisFill
|| m_rareInheritedData->strokeColor != other.m_rareInheritedData->strokeColor
|| m_rareInheritedData->caretColor != other.m_rareInheritedData->caretColor)
return true;
return false;
}
bool RenderStyle::changeRequiresRecompositeLayer(const RenderStyle& other, OptionSet<StyleDifferenceContextSensitiveProperty>&) const
{
if (m_inheritedFlags.pointerEvents != other.m_inheritedFlags.pointerEvents)
return true;
if (m_rareNonInheritedData.ptr() != other.m_rareNonInheritedData.ptr()) {
if (usedTransformStyle3D() != other.usedTransformStyle3D()
|| m_rareNonInheritedData->backfaceVisibility != other.m_rareNonInheritedData->backfaceVisibility
|| m_rareNonInheritedData->perspective != other.m_rareNonInheritedData->perspective
|| m_rareNonInheritedData->perspectiveOriginX != other.m_rareNonInheritedData->perspectiveOriginX
|| m_rareNonInheritedData->perspectiveOriginY != other.m_rareNonInheritedData->perspectiveOriginY
|| m_rareNonInheritedData->overscrollBehaviorX != other.m_rareNonInheritedData->overscrollBehaviorX
|| m_rareNonInheritedData->overscrollBehaviorY != other.m_rareNonInheritedData->overscrollBehaviorY)
return true;
}
return false;
}
StyleDifference RenderStyle::diff(const RenderStyle& other, OptionSet<StyleDifferenceContextSensitiveProperty>& changedContextSensitiveProperties) const
{
changedContextSensitiveProperties = OptionSet<StyleDifferenceContextSensitiveProperty>();
StyleDifference svgChange = StyleDifference::Equal;
if (m_svgStyle != other.m_svgStyle) {
svgChange = m_svgStyle->diff(other.m_svgStyle.get());
if (svgChange == StyleDifference::Layout)
return svgChange;
}
if (changeRequiresLayout(other, changedContextSensitiveProperties))
return StyleDifference::Layout;
// SVGRenderStyle::diff() might have returned StyleDifference::Repaint, eg. if fill changes.
// If eg. the font-size changed at the same time, we're not allowed to return StyleDifference::Repaint,
// but have to return StyleDifference::Layout, that's why this if branch comes after all branches
// that are relevant for SVG and might return StyleDifference::Layout.
if (svgChange != StyleDifference::Equal)
return svgChange;
if (changeRequiresPositionedLayoutOnly(other, changedContextSensitiveProperties))
return StyleDifference::LayoutPositionedMovementOnly;
if (changeRequiresLayerRepaint(other, changedContextSensitiveProperties))
return StyleDifference::RepaintLayer;
if (changeRequiresRepaint(other, changedContextSensitiveProperties))
return StyleDifference::Repaint;
if (changeRequiresRepaintIfText(other, changedContextSensitiveProperties))
return StyleDifference::RepaintIfText;
// FIXME: RecompositeLayer should also behave as a priority bit (e.g when the style change requires layout, we know that
// the content also needs repaint and it will eventually get repainted,
// but a repaint type of change (e.g. color change) does not necessarily trigger recomposition).
if (changeRequiresRecompositeLayer(other, changedContextSensitiveProperties))
return StyleDifference::RecompositeLayer;
// Cursors are not checked, since they will be set appropriately in response to mouse events,
// so they don't need to cause any repaint or layout.
// Animations don't need to be checked either. We always set the new style on the RenderObject, so we will get a chance to fire off
// the resulting transition properly.
return StyleDifference::Equal;
}
bool RenderStyle::diffRequiresLayerRepaint(const RenderStyle& style, bool isComposited) const
{
OptionSet<StyleDifferenceContextSensitiveProperty> changedContextSensitiveProperties;
if (changeRequiresRepaint(style, changedContextSensitiveProperties))
return true;
if (isComposited && changeRequiresLayerRepaint(style, changedContextSensitiveProperties))
return changedContextSensitiveProperties.contains(StyleDifferenceContextSensitiveProperty::ClipRect);
return false;
}
void RenderStyle::setClip(Length&& top, Length&& right, Length&& bottom, Length&& left)
{
auto& data = m_visualData.access();
data.clip.top() = WTFMove(top);
data.clip.right() = WTFMove(right);
data.clip.bottom() = WTFMove(bottom);
data.clip.left() = WTFMove(left);
}
void RenderStyle::addCursor(RefPtr<StyleImage>&& image, const std::optional<IntPoint>& hotSpot)
{
auto& cursorData = m_rareInheritedData.access().cursorData;
if (!cursorData)
cursorData = CursorList::create();
// Point outside the image is how we tell the cursor machinery there is no hot spot, and it should generate one (done in the Cursor class).
// FIXME: Would it be better to extend the concept of "no hot spot" deeper, into CursorData and beyond, rather than using -1/-1 for it?
cursorData->append(CursorData(WTFMove(image), hotSpot.value_or(IntPoint { -1, -1 })));
}
void RenderStyle::setCursorList(RefPtr<CursorList>&& list)
{
m_rareInheritedData.access().cursorData = WTFMove(list);
}
void RenderStyle::setQuotes(RefPtr<QuotesData>&& q)
{
if (m_rareInheritedData->quotes == q || (m_rareInheritedData->quotes && q && *m_rareInheritedData->quotes == *q))
return;
m_rareInheritedData.access().quotes = WTFMove(q);
}
void RenderStyle::setWillChange(RefPtr<WillChangeData>&& willChangeData)
{
if (arePointingToEqualData(m_rareNonInheritedData->willChange.get(), willChangeData.get()))
return;
m_rareNonInheritedData.access().willChange = WTFMove(willChangeData);
}
void RenderStyle::setScale(RefPtr<ScaleTransformOperation>&& t)
{
m_rareNonInheritedData.access().scale = WTFMove(t);
}
void RenderStyle::setRotate(RefPtr<RotateTransformOperation>&& t)
{
m_rareNonInheritedData.access().rotate = WTFMove(t);
}
void RenderStyle::setTranslate(RefPtr<TranslateTransformOperation>&& t)
{
m_rareNonInheritedData.access().translate = WTFMove(t);
}
void RenderStyle::clearCursorList()
{
if (m_rareInheritedData->cursorData)
m_rareInheritedData.access().cursorData = nullptr;
}
void RenderStyle::clearContent()
{
if (m_rareNonInheritedData->content)
m_rareNonInheritedData.access().content = nullptr;
}
static inline ContentData& lastContent(ContentData& firstContent)
{
auto* lastContent = &firstContent;
for (auto* content = &firstContent; content; content = content->next())
lastContent = content;
return *lastContent;
}
void RenderStyle::setContent(std::unique_ptr<ContentData> contentData, bool add)
{
auto& data = m_rareNonInheritedData.access();
if (add && data.content)
lastContent(*data.content).setNext(WTFMove(contentData));
else {
data.content = WTFMove(contentData);
auto& altText = data.altText;
if (!altText.isNull())
data.content->setAltText(altText);
}
}
void RenderStyle::setContent(RefPtr<StyleImage>&& image, bool add)
{
if (!image)
return;
setContent(makeUnique<ImageContentData>(image.releaseNonNull()), add);
}
void RenderStyle::setContent(const String& string, bool add)
{
auto& data = m_rareNonInheritedData.access();
if (add && data.content) {
auto& last = lastContent(*data.content);
if (!is<TextContentData>(last))
last.setNext(makeUnique<TextContentData>(string));
else {
auto& textContent = downcast<TextContentData>(last);
textContent.setText(textContent.text() + string);
}
} else {
data.content = makeUnique<TextContentData>(string);
auto& altText = data.altText;
if (!altText.isNull())
data.content->setAltText(altText);
}
}
void RenderStyle::setContent(std::unique_ptr<CounterContent> counter, bool add)
{
if (!counter)
return;
setContent(makeUnique<CounterContentData>(WTFMove(counter)), add);
}
void RenderStyle::setContent(QuoteType quote, bool add)
{
setContent(makeUnique<QuoteContentData>(quote), add);
}
void RenderStyle::setContentAltText(const String& string)
{
auto& data = m_rareNonInheritedData.access();
data.altText = string;
if (data.content)
data.content->setAltText(string);
}
const String& RenderStyle::contentAltText() const
{
return m_rareNonInheritedData->altText;
}
void RenderStyle::setHasAttrContent()
{
setUnique();
SET_VAR(m_rareNonInheritedData, hasAttrContent, true);
}
bool RenderStyle::affectedByTransformOrigin() const
{
if (m_rareNonInheritedData->rotate && !m_rareNonInheritedData->rotate->isIdentity())
return true;
if (m_rareNonInheritedData->scale && !m_rareNonInheritedData->scale->isIdentity())
return true;
auto& transformOperations = m_rareNonInheritedData->transform->operations;
if (transformOperations.affectedByTransformOrigin())
return true;
if (offsetPath())
return true;
return false;
}
FloatPoint RenderStyle::computePerspectiveOrigin(const FloatRect& boundingBox) const
{
return boundingBox.location() + floatPointForLengthPoint(perspectiveOrigin(), boundingBox.size());
}
void RenderStyle::applyPerspective(TransformationMatrix& transform, const RenderObject& renderer, const FloatPoint& originTranslate) const
{
// https://www.w3.org/TR/css-transforms-2/#perspective
// The perspective matrix is computed as follows:
// 1. Start with the identity matrix.
// 2. Translate by the computed X and Y values of perspective-origin
transform.translate(originTranslate.x(), originTranslate.y());
// 3. Multiply by the matrix that would be obtained from the perspective() transform function, where the length is provided by the value of the perspective property
transform.applyPerspective(usedPerspective(renderer));
// 4. Translate by the negated computed X and Y values of perspective-origin
transform.translate(-originTranslate.x(), -originTranslate.y());
}
FloatPoint3D RenderStyle::computeTransformOrigin(const FloatRect& boundingBox) const
{
FloatPoint3D originTranslate;
originTranslate.setXY(boundingBox.location() + floatPointForLengthPoint(transformOriginXY(), boundingBox.size()));
originTranslate.setZ(transformOriginZ());
return originTranslate;
}
void RenderStyle::applyTransformOrigin(TransformationMatrix& transform, const FloatPoint3D& originTranslate) const
{
if (!originTranslate.isZero())
transform.translate3d(originTranslate.x(), originTranslate.y(), originTranslate.z());
}
void RenderStyle::unapplyTransformOrigin(TransformationMatrix& transform, const FloatPoint3D& originTranslate) const
{
if (!originTranslate.isZero())
transform.translate3d(-originTranslate.x(), -originTranslate.y(), -originTranslate.z());
}
void RenderStyle::applyTransform(TransformationMatrix& transform, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> options) const
{
if (!options.contains(RenderStyle::TransformOperationOption::TransformOrigin) || !affectedByTransformOrigin()) {
applyCSSTransform(transform, boundingBox, options);
return;
}
auto originTranslate = computeTransformOrigin(boundingBox);
applyTransformOrigin(transform, originTranslate);
applyCSSTransform(transform, boundingBox, options);
unapplyTransformOrigin(transform, originTranslate);
}
void RenderStyle::applyCSSTransform(TransformationMatrix& transform, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> options) const
{
// https://www.w3.org/TR/css-transforms-2/#ctm
// The transformation matrix is computed from the transform, transform-origin, translate, rotate, scale, and offset properties as follows:
// 1. Start with the identity matrix.
// 2. Translate by the computed X, Y, and Z values of transform-origin.
// (implemented in applyTransformOrigin)
// 3. Translate by the computed X, Y, and Z values of translate.
if (options.contains(RenderStyle::TransformOperationOption::Translate)) {
if (TransformOperation* translate = m_rareNonInheritedData->translate.get())
translate->apply(transform, boundingBox.size());
}
// 4. Rotate by the computed <angle> about the specified axis of rotate.
if (options.contains(RenderStyle::TransformOperationOption::Rotate)) {
if (TransformOperation* rotate = m_rareNonInheritedData->rotate.get())
rotate->apply(transform, boundingBox.size());
}
// 5. Scale by the computed X, Y, and Z values of scale.
if (options.contains(RenderStyle::TransformOperationOption::Scale)) {
if (TransformOperation* scale = m_rareNonInheritedData->scale.get())
scale->apply(transform, boundingBox.size());
}
// 6. Translate and rotate by the transform specified by offset.
if (options.contains(RenderStyle::TransformOperationOption::Offset))
applyMotionPathTransform(transform, boundingBox);
// 7. Multiply by each of the transform functions in transform from left to right.
auto& transformOperations = m_rareNonInheritedData->transform->operations;
for (auto& operation : transformOperations.operations())
operation->apply(transform, boundingBox.size());
// 8. Translate by the negated computed X, Y and Z values of transform-origin.
// (implemented in unapplyTransformOrigin)
}
static std::optional<Path> getPathFromPathOperation(const FloatRect& box, const PathOperation& operation, const FloatPoint& anchor, OffsetRotation rotation)
{
switch (operation.type()) {
case PathOperation::Shape:
return downcast<ShapePathOperation>(operation).pathForReferenceRect(box);
case PathOperation::Reference:
if (!downcast<ReferencePathOperation>(operation).element() || (!is<SVGPathElement>(downcast<ReferencePathOperation>(operation).element()) && !is<SVGGeometryElement>(downcast<ReferencePathOperation>(operation).element())))
return std::nullopt;
return pathFromGraphicsElement(downcast<ReferencePathOperation>(operation).element());
case PathOperation::Box:
return downcast<BoxPathOperation>(operation).getPath();
case PathOperation::Ray:
return downcast<RayPathOperation>(operation).pathForReferenceRect(box, anchor, rotation);
}
RELEASE_ASSERT_NOT_REACHED();
}
static PathTraversalState getTraversalStateAtDistance(const Path& path, const Length& distance)
{
auto pathLength = path.length();
auto distanceValue = floatValueForLength(distance, pathLength);
float resolvedLength = 0;
if (path.isClosed()) {
if (pathLength) {
resolvedLength = fmod(distanceValue, pathLength);
if (resolvedLength < 0)
resolvedLength += pathLength;
}
} else
resolvedLength = clampTo<float>(distanceValue, 0, pathLength);
ASSERT(resolvedLength >= 0);
return path.traversalStateAtLength(resolvedLength);
}
void RenderStyle::applyMotionPathTransform(TransformationMatrix& transform, const FloatRect& boundingBox) const
{
if (!offsetPath())
return;
auto transformOrigin = computeTransformOrigin(boundingBox).xy();
auto anchor = transformOrigin;
if (!offsetAnchor().x().isAuto())
anchor = floatPointForLengthPoint(offsetAnchor(), boundingBox.size()) + boundingBox.location();
// Shift element to the point on path specified by offset-path and offset-distance.
auto path = getPathFromPathOperation(boundingBox, *offsetPath(), anchor, offsetRotate());
if (!path)
return;
auto traversalState = getTraversalStateAtDistance(*path, offsetDistance());
transform.translate(traversalState.current().x(), traversalState.current().y());
// Shift element to the anchor specified by offset-anchor.
transform.translate(-anchor.x(), -anchor.y());
auto shiftToOrigin = anchor - transformOrigin;
transform.translate(shiftToOrigin.width(), shiftToOrigin.height());
// Apply rotation.
auto rotation = offsetRotate();
if (rotation.hasAuto())
transform.rotate(traversalState.normalAngle() + rotation.angle());
else
transform.rotate(rotation.angle());
transform.translate(-shiftToOrigin.width(), -shiftToOrigin.height());
}
void RenderStyle::setPageScaleTransform(float scale)
{
if (scale == 1)
return;
TransformOperations transform;
transform.operations().append(ScaleTransformOperation::create(scale, scale, ScaleTransformOperation::SCALE));
setTransform(transform);
setTransformOriginX(Length(0, LengthType::Fixed));
setTransformOriginY(Length(0, LengthType::Fixed));
}
void RenderStyle::setTextShadow(std::unique_ptr<ShadowData> shadowData, bool add)
{
ASSERT(!shadowData || (shadowData->spread().isZero() && shadowData->style() == ShadowStyle::Normal));
auto& rareData = m_rareInheritedData.access();
if (!add) {
rareData.textShadow = WTFMove(shadowData);
return;
}
shadowData->setNext(WTFMove(rareData.textShadow));
rareData.textShadow = WTFMove(shadowData);
}
void RenderStyle::setBoxShadow(std::unique_ptr<ShadowData> shadowData, bool add)
{
auto& rareData = m_rareNonInheritedData.access();
if (!add) {
rareData.boxShadow = WTFMove(shadowData);
return;
}
shadowData->setNext(WTFMove(rareData.boxShadow));
rareData.boxShadow = WTFMove(shadowData);
}
static RoundedRect::Radii calcRadiiFor(const BorderData& border, const LayoutSize& size)
{
return {
sizeForLengthSize(border.topLeftRadius(), size),
sizeForLengthSize(border.topRightRadius(), size),
sizeForLengthSize(border.bottomLeftRadius(), size),
sizeForLengthSize(border.bottomRightRadius(), size)
};
}
StyleImage* RenderStyle::listStyleImage() const
{
return m_rareInheritedData->listStyleImage.get();
}
void RenderStyle::setListStyleImage(RefPtr<StyleImage>&& v)
{
if (m_rareInheritedData->listStyleImage != v)
m_rareInheritedData.access().listStyleImage = WTFMove(v);
}
const Color& RenderStyle::color() const
{
return m_inheritedData->color;
}
const Color& RenderStyle::visitedLinkColor() const
{
return m_inheritedData->visitedLinkColor;
}
void RenderStyle::setColor(const Color& v)
{
SET_VAR(m_inheritedData, color, v);
}
void RenderStyle::setVisitedLinkColor(const Color& v)
{
SET_VAR(m_inheritedData, visitedLinkColor, v);
}
float RenderStyle::horizontalBorderSpacing() const
{
return m_inheritedData->horizontalBorderSpacing;
}
float RenderStyle::verticalBorderSpacing() const
{
return m_inheritedData->verticalBorderSpacing;
}
void RenderStyle::setHorizontalBorderSpacing(float v)
{
SET_VAR(m_inheritedData, horizontalBorderSpacing, v);
}
void RenderStyle::setVerticalBorderSpacing(float v)
{
SET_VAR(m_inheritedData, verticalBorderSpacing, v);
}
RoundedRect RenderStyle::getRoundedBorderFor(const LayoutRect& borderRect, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
{
RoundedRect roundedRect(borderRect);
if (hasBorderRadius()) {
RoundedRect::Radii radii = calcRadiiFor(m_surroundData->border, borderRect.size());
radii.scale(calcBorderRadiiConstraintScaleFor(borderRect, radii));
roundedRect.includeLogicalEdges(radii, isHorizontalWritingMode(), includeLogicalLeftEdge, includeLogicalRightEdge);
}
return roundedRect;
}
RoundedRect RenderStyle::getRoundedInnerBorderFor(const LayoutRect& borderRect, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
{
bool horizontal = isHorizontalWritingMode();
LayoutUnit leftWidth { (!horizontal || includeLogicalLeftEdge) ? borderLeftWidth() : 0 };
LayoutUnit rightWidth { (!horizontal || includeLogicalRightEdge) ? borderRightWidth() : 0 };
LayoutUnit topWidth { (horizontal || includeLogicalLeftEdge) ? borderTopWidth() : 0 };
LayoutUnit bottomWidth { (horizontal || includeLogicalRightEdge) ? borderBottomWidth() : 0 };
return getRoundedInnerBorderFor(borderRect, topWidth, bottomWidth, leftWidth, rightWidth, includeLogicalLeftEdge, includeLogicalRightEdge);
}
RoundedRect RenderStyle::getRoundedInnerBorderFor(const LayoutRect& borderRect, LayoutUnit topWidth, LayoutUnit bottomWidth,
LayoutUnit leftWidth, LayoutUnit rightWidth, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
{
auto width = std::max(0_lu, borderRect.width() - leftWidth - rightWidth);
auto height = std::max(0_lu, borderRect.height() - topWidth - bottomWidth);
auto roundedRect = RoundedRect {
borderRect.x() + leftWidth,
borderRect.y() + topWidth,
width,
height
};
if (hasBorderRadius()) {
auto radii = getRoundedBorderFor(borderRect).radii();
radii.shrink(topWidth, bottomWidth, leftWidth, rightWidth);
roundedRect.includeLogicalEdges(radii, isHorizontalWritingMode(), includeLogicalLeftEdge, includeLogicalRightEdge);
}
return roundedRect;
}
static bool allLayersAreFixed(const FillLayer& layers)
{
for (auto* layer = &layers; layer; layer = layer->next()) {
if (!(layer->image() && layer->attachment() == FillAttachment::FixedBackground))
return false;
}
return true;
}
bool RenderStyle::hasEntirelyFixedBackground() const
{
return allLayersAreFixed(backgroundLayers());
}
const CounterDirectiveMap* RenderStyle::counterDirectives() const
{
return m_rareNonInheritedData->counterDirectives.get();
}
CounterDirectiveMap& RenderStyle::accessCounterDirectives()
{
auto& map = m_rareNonInheritedData.access().counterDirectives;
if (!map)
map = makeUnique<CounterDirectiveMap>();
return *map;
}
const AtomString& RenderStyle::hyphenString() const
{
ASSERT(hyphens() != Hyphens::None);
auto& hyphenationString = m_rareInheritedData->hyphenationString;
if (!hyphenationString.isNull())
return hyphenationString;
// FIXME: This should depend on locale.
static MainThreadNeverDestroyed<const AtomString> hyphenMinusString(&hyphenMinus, 1);
static MainThreadNeverDestroyed<const AtomString> hyphenString(&hyphen, 1);
return fontCascade().primaryFont().glyphForCharacter(hyphen) ? hyphenString : hyphenMinusString;
}
const AtomString& RenderStyle::textEmphasisMarkString() const
{
switch (textEmphasisMark()) {
case TextEmphasisMark::None:
return nullAtom();
case TextEmphasisMark::Custom:
return textEmphasisCustomMark();
case TextEmphasisMark::Dot: {
static MainThreadNeverDestroyed<const AtomString> filledDotString(&bullet, 1);
static MainThreadNeverDestroyed<const AtomString> openDotString(&whiteBullet, 1);
return textEmphasisFill() == TextEmphasisFill::Filled ? filledDotString : openDotString;
}
case TextEmphasisMark::Circle: {
static MainThreadNeverDestroyed<const AtomString> filledCircleString(&blackCircle, 1);
static MainThreadNeverDestroyed<const AtomString> openCircleString(&whiteCircle, 1);
return textEmphasisFill() == TextEmphasisFill::Filled ? filledCircleString : openCircleString;
}
case TextEmphasisMark::DoubleCircle: {
static MainThreadNeverDestroyed<const AtomString> filledDoubleCircleString(&fisheye, 1);
static MainThreadNeverDestroyed<const AtomString> openDoubleCircleString(&bullseye, 1);
return textEmphasisFill() == TextEmphasisFill::Filled ? filledDoubleCircleString : openDoubleCircleString;
}
case TextEmphasisMark::Triangle: {
static MainThreadNeverDestroyed<const AtomString> filledTriangleString(&blackUpPointingTriangle, 1);
static MainThreadNeverDestroyed<const AtomString> openTriangleString(&whiteUpPointingTriangle, 1);
return textEmphasisFill() == TextEmphasisFill::Filled ? filledTriangleString : openTriangleString;
}
case TextEmphasisMark::Sesame: {
static MainThreadNeverDestroyed<const AtomString> filledSesameString(&sesameDot, 1);
static MainThreadNeverDestroyed<const AtomString> openSesameString(&whiteSesameDot, 1);
return textEmphasisFill() == TextEmphasisFill::Filled ? filledSesameString : openSesameString;
}
case TextEmphasisMark::Auto:
ASSERT_NOT_REACHED();
return nullAtom();
}
ASSERT_NOT_REACHED();
return nullAtom();
}
void RenderStyle::adjustAnimations()
{
auto* animationList = m_rareNonInheritedData->animations.get();
if (!animationList)
return;
// Get rid of empty animations and anything beyond them
for (size_t i = 0, size = animationList->size(); i < size; ++i) {
if (animationList->animation(i).isEmpty()) {
animationList->resize(i);
break;
}
}
if (animationList->isEmpty()) {
clearAnimations();
return;
}
// Repeat patterns into layers that don't have some properties set.
animationList->fillUnsetProperties();
}
void RenderStyle::adjustTransitions()
{
auto* transitionList = m_rareNonInheritedData->transitions.get();
if (!transitionList)
return;
// Get rid of empty transitions and anything beyond them
for (size_t i = 0, size = transitionList->size(); i < size; ++i) {
if (transitionList->animation(i).isEmpty()) {
transitionList->resize(i);
break;
}
}
if (transitionList->isEmpty()) {
clearTransitions();
return;
}
// Repeat patterns into layers that don't have some properties set.
transitionList->fillUnsetProperties();
}
AnimationList& RenderStyle::ensureAnimations()
{
if (!m_rareNonInheritedData.access().animations)
m_rareNonInheritedData.access().animations = AnimationList::create();
return *m_rareNonInheritedData->animations;
}
AnimationList& RenderStyle::ensureTransitions()
{
if (!m_rareNonInheritedData.access().transitions)
m_rareNonInheritedData.access().transitions = AnimationList::create();
return *m_rareNonInheritedData->transitions;
}
float RenderStyle::usedPerspective(const RenderObject& object) const
{
return object.document().settings().css3DTransformInteroperabilityEnabled() ? std::max(1.0f, perspective()) : perspective();
}
const FontCascade& RenderStyle::fontCascade() const
{
return m_inheritedData->fontCascade;
}
const FontMetrics& RenderStyle::metricsOfPrimaryFont() const
{
return m_inheritedData->fontCascade.metricsOfPrimaryFont();
}
const FontCascadeDescription& RenderStyle::fontDescription() const
{
return m_inheritedData->fontCascade.fontDescription();
}
float RenderStyle::specifiedFontSize() const
{
return fontDescription().specifiedSize();
}
float RenderStyle::computedFontSize() const
{
return fontDescription().computedSize();
}
unsigned RenderStyle::computedFontPixelSize() const
{
return fontDescription().computedPixelSize();
}
const Length& RenderStyle::wordSpacing() const
{
return m_rareInheritedData->wordSpacing;
}
float RenderStyle::letterSpacing() const
{
return m_inheritedData->fontCascade.letterSpacing();
}
bool RenderStyle::setFontDescription(FontCascadeDescription&& description)
{
if (m_inheritedData->fontCascade.fontDescription() == description)
return false;
auto& cascade = m_inheritedData.access().fontCascade;
cascade = { WTFMove(description), cascade.letterSpacing(), cascade.wordSpacing() };
return true;
}
const Length& RenderStyle::specifiedLineHeight() const
{
#if ENABLE(TEXT_AUTOSIZING)
return m_inheritedData->specifiedLineHeight;
#else
return m_inheritedData->lineHeight;
#endif
}
#if ENABLE(TEXT_AUTOSIZING)
void RenderStyle::setSpecifiedLineHeight(Length&& height)
{
SET_VAR(m_inheritedData, specifiedLineHeight, WTFMove(height));
}
#endif
const Length& RenderStyle::lineHeight() const
{
return m_inheritedData->lineHeight;
}
void RenderStyle::setLineHeight(Length&& height)
{
SET_VAR(m_inheritedData, lineHeight, WTFMove(height));
}
int RenderStyle::computedLineHeight() const
{
return computeLineHeight(lineHeight());
}
int RenderStyle::computeLineHeight(const Length& lineHeightLength) const
{
// Negative value means the line height is not set. Use the font's built-in spacing.
if (lineHeightLength.isNegative())
return metricsOfPrimaryFont().lineSpacing();
if (lineHeightLength.isPercentOrCalculated())
return minimumValueForLength(lineHeightLength, computedFontPixelSize());
return clampTo<int>(lineHeightLength.value());
}
void RenderStyle::setWordSpacing(Length&& value)
{
float fontWordSpacing;
switch (value.type()) {
case LengthType::Auto:
fontWordSpacing = 0;
break;
case LengthType::Percent:
fontWordSpacing = value.percent() * fontCascade().widthOfSpaceString() / 100;
break;
case LengthType::Fixed:
fontWordSpacing = value.value();
break;
case LengthType::Calculated:
fontWordSpacing = value.nonNanCalculatedValue(maxValueForCssLength);
break;
default:
ASSERT_NOT_REACHED();
fontWordSpacing = 0;
break;
}
m_inheritedData.access().fontCascade.setWordSpacing(fontWordSpacing);
m_rareInheritedData.access().wordSpacing = WTFMove(value);
}
void RenderStyle::setLetterSpacing(float letterSpacing)
{
FontSelector* currentFontSelector = fontCascade().fontSelector();
auto description = fontDescription();
description.setShouldDisableLigaturesForSpacing(letterSpacing);
setFontDescription(WTFMove(description));
fontCascade().update(currentFontSelector);
setLetterSpacingWithoutUpdatingFontDescription(letterSpacing);
}
void RenderStyle::setLetterSpacingWithoutUpdatingFontDescription(float letterSpacing)
{
m_inheritedData.access().fontCascade.setLetterSpacing(letterSpacing);
}
void RenderStyle::setFontSize(float size)
{
// size must be specifiedSize if Text Autosizing is enabled, but computedSize if text
// zoom is enabled (if neither is enabled it's irrelevant as they're probably the same).
ASSERT(std::isfinite(size));
if (!std::isfinite(size) || size < 0)
size = 0;
else
size = std::min(maximumAllowedFontSize, size);
FontSelector* currentFontSelector = fontCascade().fontSelector();
auto description = fontDescription();
description.setSpecifiedSize(size);
description.setComputedSize(size);
setFontDescription(WTFMove(description));
fontCascade().update(currentFontSelector);
}
void RenderStyle::setFontVariationSettings(FontVariationSettings settings)
{
FontSelector* currentFontSelector = fontCascade().fontSelector();
auto description = fontDescription();
description.setVariationSettings(WTFMove(settings));
setFontDescription(WTFMove(description));
fontCascade().update(currentFontSelector);
}
void RenderStyle::setFontWeight(FontSelectionValue value)
{
FontSelector* currentFontSelector = fontCascade().fontSelector();
auto description = fontDescription();
description.setWeight(value);
setFontDescription(WTFMove(description));
fontCascade().update(currentFontSelector);
}
void RenderStyle::setFontStretch(FontSelectionValue value)
{
FontSelector* currentFontSelector = fontCascade().fontSelector();
auto description = fontDescription();
description.setStretch(value);
setFontDescription(WTFMove(description));
fontCascade().update(currentFontSelector);
}
void RenderStyle::setFontItalic(std::optional<FontSelectionValue> value)
{
FontSelector* currentFontSelector = fontCascade().fontSelector();
auto description = fontDescription();
description.setItalic(value);
setFontDescription(WTFMove(description));
fontCascade().update(currentFontSelector);
}
void RenderStyle::setFontPalette(FontPalette value)
{
FontSelector* currentFontSelector = fontCascade().fontSelector();
auto description = fontDescription();
description.setFontPalette(value);
setFontDescription(WTFMove(description));
fontCascade().update(currentFontSelector);
}
LayoutBoxExtent RenderStyle::shadowExtent(const ShadowData* shadow)
{
LayoutUnit top;
LayoutUnit right;
LayoutUnit bottom;
LayoutUnit left;
for ( ; shadow; shadow = shadow->next()) {
if (shadow->style() == ShadowStyle::Inset)
continue;
auto extentAndSpread = shadow->paintingExtent() + LayoutUnit(shadow->spread().value());
top = std::min<LayoutUnit>(top, LayoutUnit(shadow->y().value()) - extentAndSpread);
right = std::max<LayoutUnit>(right, LayoutUnit(shadow->x().value()) + extentAndSpread);
bottom = std::max<LayoutUnit>(bottom, LayoutUnit(shadow->y().value()) + extentAndSpread);
left = std::min<LayoutUnit>(left, LayoutUnit(shadow->x().value()) - extentAndSpread);
}
return { top, right, bottom, left };
}
LayoutBoxExtent RenderStyle::shadowInsetExtent(const ShadowData* shadow)
{
LayoutUnit top;
LayoutUnit right;
LayoutUnit bottom;
LayoutUnit left;
for ( ; shadow; shadow = shadow->next()) {
if (shadow->style() == ShadowStyle::Normal)
continue;
auto extentAndSpread = shadow->paintingExtent() + LayoutUnit(shadow->spread().value());
top = std::max<LayoutUnit>(top, LayoutUnit(shadow->y().value()) + extentAndSpread);
right = std::min<LayoutUnit>(right, LayoutUnit(shadow->x().value()) - extentAndSpread);
bottom = std::min<LayoutUnit>(bottom, LayoutUnit(shadow->y().value()) - extentAndSpread);
left = std::max<LayoutUnit>(left, LayoutUnit(shadow->x().value()) + extentAndSpread);
}
return { top, right, bottom, left };
}
void RenderStyle::getShadowHorizontalExtent(const ShadowData* shadow, LayoutUnit &left, LayoutUnit &right)
{
left = 0;
right = 0;
for ( ; shadow; shadow = shadow->next()) {
if (shadow->style() == ShadowStyle::Inset)
continue;
auto extentAndSpread = shadow->paintingExtent() + LayoutUnit(shadow->spread().value());
left = std::min<LayoutUnit>(left, LayoutUnit(shadow->x().value()) - extentAndSpread);
right = std::max<LayoutUnit>(right, LayoutUnit(shadow->x().value()) + extentAndSpread);
}
}
void RenderStyle::getShadowVerticalExtent(const ShadowData* shadow, LayoutUnit &top, LayoutUnit &bottom)
{
top = 0;
bottom = 0;
for ( ; shadow; shadow = shadow->next()) {
if (shadow->style() == ShadowStyle::Inset)
continue;
auto extentAndSpread = shadow->paintingExtent() + LayoutUnit(shadow->spread().value());
top = std::min<LayoutUnit>(top, LayoutUnit(shadow->y().intValue()) - extentAndSpread);
bottom = std::max<LayoutUnit>(bottom, LayoutUnit(shadow->y().intValue()) + extentAndSpread);
}
}
Color RenderStyle::unresolvedColorForProperty(CSSPropertyID colorProperty, bool visitedLink) const
{
switch (colorProperty) {
case CSSPropertyAccentColor:
return accentColor();
case CSSPropertyColor:
return visitedLink ? visitedLinkColor() : color();
case CSSPropertyBackgroundColor:
return visitedLink ? visitedLinkBackgroundColor() : backgroundColor();
case CSSPropertyBorderBottomColor:
return visitedLink ? visitedLinkBorderBottomColor() : borderBottomColor();
case CSSPropertyBorderLeftColor:
return visitedLink ? visitedLinkBorderLeftColor() : borderLeftColor();
case CSSPropertyBorderRightColor:
return visitedLink ? visitedLinkBorderRightColor() : borderRightColor();
case CSSPropertyBorderTopColor:
return visitedLink ? visitedLinkBorderTopColor() : borderTopColor();
case CSSPropertyFill:
return fillPaintColor();
case CSSPropertyFloodColor:
return floodColor();
case CSSPropertyLightingColor:
return lightingColor();
case CSSPropertyOutlineColor:
return visitedLink ? visitedLinkOutlineColor() : outlineColor();
case CSSPropertyStopColor:
return stopColor();
case CSSPropertyStroke:
return strokePaintColor();
case CSSPropertyStrokeColor:
return visitedLink ? visitedLinkStrokeColor() : strokeColor();
case CSSPropertyBorderBlockEndColor:
case CSSPropertyBorderBlockStartColor:
case CSSPropertyBorderInlineEndColor:
case CSSPropertyBorderInlineStartColor:
return unresolvedColorForProperty(CSSProperty::resolveDirectionAwareProperty(colorProperty, direction(), writingMode()));
case CSSPropertyColumnRuleColor:
return visitedLink ? visitedLinkColumnRuleColor() : columnRuleColor();
case CSSPropertyTextEmphasisColor:
return visitedLink ? visitedLinkTextEmphasisColor() : textEmphasisColor();
case CSSPropertyWebkitTextFillColor:
return visitedLink ? visitedLinkTextFillColor() : textFillColor();
case CSSPropertyWebkitTextStrokeColor:
return visitedLink ? visitedLinkTextStrokeColor() : textStrokeColor();
case CSSPropertyTextDecorationColor:
return visitedLink ? visitedLinkTextDecorationColor() : textDecorationColor();
case CSSPropertyCaretColor:
return visitedLink ? visitedLinkCaretColor() : caretColor();
default:
ASSERT_NOT_REACHED();
break;
}
return { };
}
Color RenderStyle::colorResolvingCurrentColor(CSSPropertyID colorProperty, bool visitedLink) const
{
auto computeBorderStyle = [&] {
switch (colorProperty) {
case CSSPropertyBorderLeftColor:
return borderLeftStyle();
case CSSPropertyBorderRightColor:
return borderRightStyle();
case CSSPropertyBorderTopColor:
return borderTopStyle();
case CSSPropertyBorderBottomColor:
return borderBottomStyle();
default:
return BorderStyle::None;
}
};
auto result = unresolvedColorForProperty(colorProperty, visitedLink);
if (isCurrentColor(result)) {
if (colorProperty == CSSPropertyTextDecorationColor) {
if (hasPositiveStrokeWidth()) {
// Prefer stroke color if possible but not if it's fully transparent.
auto strokeColor = colorResolvingCurrentColor(effectiveStrokeColorProperty(), visitedLink);
if (strokeColor.isVisible())
return strokeColor;
}
return colorResolvingCurrentColor(CSSPropertyWebkitTextFillColor, visitedLink);
}
auto borderStyle = computeBorderStyle();
if (!visitedLink && (borderStyle == BorderStyle::Inset || borderStyle == BorderStyle::Outset || borderStyle == BorderStyle::Ridge || borderStyle == BorderStyle::Groove))
return SRGBA<uint8_t> { 238, 238, 238 };
return visitedLink ? visitedLinkColor() : color();
}
return result;
}
Color RenderStyle::colorResolvingCurrentColor(const Color& color) const
{
if (isCurrentColor(color))
return this->color();
return color;
}
Color RenderStyle::visitedDependentColor(CSSPropertyID colorProperty) const
{
Color unvisitedColor = colorResolvingCurrentColor(colorProperty, false);
if (insideLink() != InsideLink::InsideVisited)
return unvisitedColor;
#if ENABLE(CSS_COMPOSITING)
if (isInSubtreeWithBlendMode())
return unvisitedColor;
#endif
Color visitedColor = colorResolvingCurrentColor(colorProperty, true);
// FIXME: Technically someone could explicitly specify the color transparent, but for now we'll just
// assume that if the background color is transparent that it wasn't set. Note that it's weird that
// we're returning unvisited info for a visited link, but given our restriction that the alpha values
// have to match, it makes more sense to return the unvisited background color if specified than it
// does to return black. This behavior matches what Firefox 4 does as well.
if (colorProperty == CSSPropertyBackgroundColor && visitedColor == Color::transparentBlack)
return unvisitedColor;
// Take the alpha from the unvisited color, but get the RGB values from the visited color.
return visitedColor.colorWithAlpha(unvisitedColor.alphaAsFloat());
}
Color RenderStyle::visitedDependentColorWithColorFilter(CSSPropertyID colorProperty) const
{
if (!hasAppleColorFilter())
return visitedDependentColor(colorProperty);
return colorByApplyingColorFilter(visitedDependentColor(colorProperty));
}
Color RenderStyle::colorByApplyingColorFilter(const Color& color) const
{
Color transformedColor = color;
appleColorFilter().transformColor(transformedColor);
return transformedColor;
}
Color RenderStyle::effectiveAccentColor() const
{
if (hasAutoAccentColor())
return { };
if (hasAppleColorFilter())
return colorByApplyingColorFilter(colorResolvingCurrentColor(accentColor()));
return colorResolvingCurrentColor(accentColor());
}
const BorderValue& RenderStyle::borderBefore() const
{
switch (writingMode()) {
case WritingMode::TopToBottom:
return borderTop();
case WritingMode::BottomToTop:
return borderBottom();
case WritingMode::LeftToRight:
return borderLeft();
case WritingMode::RightToLeft:
return borderRight();
}
ASSERT_NOT_REACHED();
return borderTop();
}
const BorderValue& RenderStyle::borderAfter() const
{
switch (writingMode()) {
case WritingMode::TopToBottom:
return borderBottom();
case WritingMode::BottomToTop:
return borderTop();
case WritingMode::LeftToRight:
return borderRight();
case WritingMode::RightToLeft:
return borderLeft();
}
ASSERT_NOT_REACHED();
return borderBottom();
}
const BorderValue& RenderStyle::borderStart() const
{
if (isHorizontalWritingMode())
return isLeftToRightDirection() ? borderLeft() : borderRight();
return isLeftToRightDirection() ? borderTop() : borderBottom();
}
const BorderValue& RenderStyle::borderEnd() const
{
if (isHorizontalWritingMode())
return isLeftToRightDirection() ? borderRight() : borderLeft();
return isLeftToRightDirection() ? borderBottom() : borderTop();
}
float RenderStyle::borderBeforeWidth() const
{
switch (writingMode()) {
case WritingMode::TopToBottom:
return borderTopWidth();
case WritingMode::BottomToTop:
return borderBottomWidth();
case WritingMode::LeftToRight:
return borderLeftWidth();
case WritingMode::RightToLeft:
return borderRightWidth();
}
ASSERT_NOT_REACHED();
return borderTopWidth();
}
float RenderStyle::borderAfterWidth() const
{
switch (writingMode()) {
case WritingMode::TopToBottom:
return borderBottomWidth();
case WritingMode::BottomToTop:
return borderTopWidth();
case WritingMode::LeftToRight:
return borderRightWidth();
case WritingMode::RightToLeft:
return borderLeftWidth();
}
ASSERT_NOT_REACHED();
return borderBottomWidth();
}
float RenderStyle::borderStartWidth() const
{
if (isHorizontalWritingMode())
return isLeftToRightDirection() ? borderLeftWidth() : borderRightWidth();
return isLeftToRightDirection() ? borderTopWidth() : borderBottomWidth();
}
float RenderStyle::borderEndWidth() const
{
if (isHorizontalWritingMode())
return isLeftToRightDirection() ? borderRightWidth() : borderLeftWidth();
return isLeftToRightDirection() ? borderBottomWidth() : borderTopWidth();
}
void RenderStyle::setMarginStart(Length&& margin)
{
if (isHorizontalWritingMode()) {
if (isLeftToRightDirection())
setMarginLeft(WTFMove(margin));
else
setMarginRight(WTFMove(margin));
} else {
if (isLeftToRightDirection())
setMarginTop(WTFMove(margin));
else
setMarginBottom(WTFMove(margin));
}
}
void RenderStyle::setMarginEnd(Length&& margin)
{
if (isHorizontalWritingMode()) {
if (isLeftToRightDirection())
setMarginRight(WTFMove(margin));
else
setMarginLeft(WTFMove(margin));
} else {
if (isLeftToRightDirection())
setMarginBottom(WTFMove(margin));
else
setMarginTop(WTFMove(margin));
}
}
TextEmphasisMark RenderStyle::textEmphasisMark() const
{
auto mark = static_cast<TextEmphasisMark>(m_rareInheritedData->textEmphasisMark);
if (mark != TextEmphasisMark::Auto)
return mark;
if (isHorizontalWritingMode())
return TextEmphasisMark::Dot;
return TextEmphasisMark::Sesame;
}
#if ENABLE(TOUCH_EVENTS)
Color RenderStyle::initialTapHighlightColor()
{
return RenderTheme::tapHighlightColor();
}
#endif
LayoutBoxExtent RenderStyle::imageOutsets(const NinePieceImage& image) const
{
return {
NinePieceImage::computeOutset(image.outset().top(), LayoutUnit(borderTopWidth())),
NinePieceImage::computeOutset(image.outset().right(), LayoutUnit(borderRightWidth())),
NinePieceImage::computeOutset(image.outset().bottom(), LayoutUnit(borderBottomWidth())),
NinePieceImage::computeOutset(image.outset().left(), LayoutUnit(borderLeftWidth()))
};
}
std::pair<FontOrientation, NonCJKGlyphOrientation> RenderStyle::fontAndGlyphOrientation()
{
// FIXME: TextOrientationSideways should map to sideways-left in vertical-lr, which is not supported yet.
if (isHorizontalWritingMode())
return { FontOrientation::Horizontal, NonCJKGlyphOrientation::Mixed };
switch (textOrientation()) {
case TextOrientation::Mixed:
return { FontOrientation::Vertical, NonCJKGlyphOrientation::Mixed };
case TextOrientation::Upright:
return { FontOrientation::Vertical, NonCJKGlyphOrientation::Upright };
case TextOrientation::Sideways:
return { FontOrientation::Horizontal, NonCJKGlyphOrientation::Mixed };
default:
ASSERT_NOT_REACHED();
return { FontOrientation::Horizontal, NonCJKGlyphOrientation::Mixed };
}
}
void RenderStyle::setBorderImageSource(RefPtr<StyleImage>&& image)
{
if (m_surroundData->border.m_image.image() == image.get())
return;
m_surroundData.access().border.m_image.setImage(WTFMove(image));
}
void RenderStyle::setBorderImageSliceFill(bool fill)
{
if (m_surroundData->border.m_image.fill() == fill)
return;
m_surroundData.access().border.m_image.setFill(fill);
}
void RenderStyle::setBorderImageSlices(LengthBox&& slices)
{
if (m_surroundData->border.m_image.imageSlices() == slices)
return;
m_surroundData.access().border.m_image.setImageSlices(WTFMove(slices));
}
void RenderStyle::setBorderImageWidth(LengthBox&& slices)
{
if (m_surroundData->border.m_image.borderSlices() == slices)
return;
m_surroundData.access().border.m_image.setBorderSlices(WTFMove(slices));
}
void RenderStyle::setBorderImageWidthOverridesBorderWidths(bool overridesBorderWidths)
{
if (m_surroundData->border.m_image.overridesBorderWidths() == overridesBorderWidths)
return;
m_surroundData.access().border.m_image.setOverridesBorderWidths(overridesBorderWidths);
}
void RenderStyle::setBorderImageOutset(LengthBox&& outset)
{
if (m_surroundData->border.m_image.outset() == outset)
return;
m_surroundData.access().border.m_image.setOutset(WTFMove(outset));
}
void RenderStyle::setBorderImageHorizontalRule(NinePieceImageRule rule)
{
if (m_surroundData->border.m_image.horizontalRule() == rule)
return;
m_surroundData.access().border.m_image.setHorizontalRule(rule);
}
void RenderStyle::setBorderImageVerticalRule(NinePieceImageRule rule)
{
if (m_surroundData->border.m_image.verticalRule() == rule)
return;
m_surroundData.access().border.m_image.setVerticalRule(rule);
}
void RenderStyle::setColumnStylesFromPaginationMode(const Pagination::Mode& paginationMode)
{
if (paginationMode == Pagination::Unpaginated)
return;
setColumnFill(ColumnFill::Auto);
switch (paginationMode) {
case Pagination::LeftToRightPaginated:
setColumnAxis(ColumnAxis::Horizontal);
if (isHorizontalWritingMode())
setColumnProgression(isLeftToRightDirection() ? ColumnProgression::Normal : ColumnProgression::Reverse);
else
setColumnProgression(isFlippedBlocksWritingMode() ? ColumnProgression::Reverse : ColumnProgression::Normal);
break;
case Pagination::RightToLeftPaginated:
setColumnAxis(ColumnAxis::Horizontal);
if (isHorizontalWritingMode())
setColumnProgression(isLeftToRightDirection() ? ColumnProgression::Reverse : ColumnProgression::Normal);
else
setColumnProgression(isFlippedBlocksWritingMode() ? ColumnProgression::Normal : ColumnProgression::Reverse);
break;
case Pagination::TopToBottomPaginated:
setColumnAxis(ColumnAxis::Vertical);
if (isHorizontalWritingMode())
setColumnProgression(isFlippedBlocksWritingMode() ? ColumnProgression::Reverse : ColumnProgression::Normal);
else
setColumnProgression(isLeftToRightDirection() ? ColumnProgression::Normal : ColumnProgression::Reverse);
break;
case Pagination::BottomToTopPaginated:
setColumnAxis(ColumnAxis::Vertical);
if (isHorizontalWritingMode())
setColumnProgression(isFlippedBlocksWritingMode() ? ColumnProgression::Normal : ColumnProgression::Reverse);
else
setColumnProgression(isLeftToRightDirection() ? ColumnProgression::Reverse : ColumnProgression::Normal);
break;
case Pagination::Unpaginated:
ASSERT_NOT_REACHED();
break;
}
}
void RenderStyle::deduplicateInheritedCustomProperties(const RenderStyle& other)
{
auto& properties = const_cast<DataRef<StyleCustomPropertyData>&>(m_rareInheritedData->customProperties);
auto& otherProperties = other.m_rareInheritedData->customProperties;
if (properties.ptr() != otherProperties.ptr() && *properties == *otherProperties)
properties = otherProperties;
}
void RenderStyle::setInheritedCustomPropertyValue(const AtomString& name, Ref<CSSCustomPropertyValue>&& value)
{
auto* existingValue = m_rareInheritedData->customProperties->values.get(name);
if (existingValue && existingValue->equals(value.get()))
return;
m_rareInheritedData.access().customProperties.access().setCustomPropertyValue(name, WTFMove(value));
}
void RenderStyle::setNonInheritedCustomPropertyValue(const AtomString& name, Ref<CSSCustomPropertyValue>&& value)
{
auto* existingValue = m_rareNonInheritedData->customProperties->values.get(name);
if (existingValue && existingValue->equals(value.get()))
return;
m_rareNonInheritedData.access().customProperties.access().setCustomPropertyValue(name, WTFMove(value));
}
const LengthBox& RenderStyle::scrollMargin() const
{
return m_rareNonInheritedData->scrollMargin;
}
const Length& RenderStyle::scrollMarginTop() const
{
return scrollMargin().top();
}
const Length& RenderStyle::scrollMarginBottom() const
{
return scrollMargin().bottom();
}
const Length& RenderStyle::scrollMarginLeft() const
{
return scrollMargin().left();
}
const Length& RenderStyle::scrollMarginRight() const
{
return scrollMargin().right();
}
void RenderStyle::setScrollMarginTop(Length&& length)
{
SET_VAR(m_rareNonInheritedData, scrollMargin.top(), WTFMove(length));
}
void RenderStyle::setScrollMarginBottom(Length&& length)
{
SET_VAR(m_rareNonInheritedData, scrollMargin.bottom(), WTFMove(length));
}
void RenderStyle::setScrollMarginLeft(Length&& length)
{
SET_VAR(m_rareNonInheritedData, scrollMargin.left(), WTFMove(length));
}
void RenderStyle::setScrollMarginRight(Length&& length)
{
SET_VAR(m_rareNonInheritedData, scrollMargin.right(), WTFMove(length));
}
const LengthBox& RenderStyle::scrollPadding() const
{
return m_rareNonInheritedData->scrollPadding;
}
const Length& RenderStyle::scrollPaddingTop() const
{
return scrollPadding().top();
}
const Length& RenderStyle::scrollPaddingBottom() const
{
return scrollPadding().bottom();
}
const Length& RenderStyle::scrollPaddingLeft() const
{
return scrollPadding().left();
}
const Length& RenderStyle::scrollPaddingRight() const
{
return scrollPadding().right();
}
void RenderStyle::setScrollPaddingTop(Length&& length)
{
SET_VAR(m_rareNonInheritedData, scrollPadding.top(), WTFMove(length));
}
void RenderStyle::setScrollPaddingBottom(Length&& length)
{
SET_VAR(m_rareNonInheritedData, scrollPadding.bottom(), WTFMove(length));
}
void RenderStyle::setScrollPaddingLeft(Length&& length)
{
SET_VAR(m_rareNonInheritedData, scrollPadding.left(), WTFMove(length));
}
void RenderStyle::setScrollPaddingRight(Length&& length)
{
SET_VAR(m_rareNonInheritedData, scrollPadding.right(), WTFMove(length));
}
ScrollSnapType RenderStyle::initialScrollSnapType()
{
return { };
}
ScrollSnapAlign RenderStyle::initialScrollSnapAlign()
{
return { };
}
ScrollSnapStop RenderStyle::initialScrollSnapStop()
{
return ScrollSnapStop::Normal;
}
const ScrollSnapType RenderStyle::scrollSnapType() const
{
return m_rareNonInheritedData->scrollSnapType;
}
const ScrollSnapAlign& RenderStyle::scrollSnapAlign() const
{
return m_rareNonInheritedData->scrollSnapAlign;
}
ScrollSnapStop RenderStyle::scrollSnapStop() const
{
return m_rareNonInheritedData->scrollSnapStop;
}
void RenderStyle::setScrollSnapType(const ScrollSnapType type)
{
SET_VAR(m_rareNonInheritedData, scrollSnapType, type);
}
void RenderStyle::setScrollSnapAlign(const ScrollSnapAlign& alignment)
{
SET_VAR(m_rareNonInheritedData, scrollSnapAlign, alignment);
}
void RenderStyle::setScrollSnapStop(const ScrollSnapStop stop)
{
SET_VAR(m_rareNonInheritedData, scrollSnapStop, stop);
}
bool RenderStyle::hasSnapPosition() const
{
const ScrollSnapAlign& alignment = this->scrollSnapAlign();
return alignment.blockAlign != ScrollSnapAxisAlignType::None || alignment.inlineAlign != ScrollSnapAxisAlignType::None;
}
bool RenderStyle::hasReferenceFilterOnly() const
{
if (!hasFilter())
return false;
auto& filterOperations = m_rareNonInheritedData->filter->operations;
return filterOperations.size() == 1 && filterOperations.at(0)->type() == FilterOperation::REFERENCE;
}
float RenderStyle::outlineWidth() const
{
if (m_backgroundData->outline.style() == BorderStyle::None)
return 0;
if (outlineStyleIsAuto() == OutlineIsAuto::On)
return std::max(m_backgroundData->outline.width(), RenderTheme::platformFocusRingWidth());
return m_backgroundData->outline.width();
}
float RenderStyle::outlineOffset() const
{
if (outlineStyleIsAuto() == OutlineIsAuto::On)
return (m_backgroundData->outline.offset() + RenderTheme::platformFocusRingOffset(outlineWidth()));
return m_backgroundData->outline.offset();
}
bool RenderStyle::shouldPlaceVerticalScrollbarOnLeft() const
{
return (!isLeftToRightDirection() && isHorizontalWritingMode()) || writingMode() == WritingMode::RightToLeft;
}
Vector<PaintType, 3> RenderStyle::paintTypesForPaintOrder(PaintOrder order)
{
Vector<PaintType, 3> paintOrder;
switch (order) {
case PaintOrder::Normal:
FALLTHROUGH;
case PaintOrder::Fill:
paintOrder.append(PaintType::Fill);
paintOrder.append(PaintType::Stroke);
paintOrder.append(PaintType::Markers);
break;
case PaintOrder::FillMarkers:
paintOrder.append(PaintType::Fill);
paintOrder.append(PaintType::Markers);
paintOrder.append(PaintType::Stroke);
break;
case PaintOrder::Stroke:
paintOrder.append(PaintType::Stroke);
paintOrder.append(PaintType::Fill);
paintOrder.append(PaintType::Markers);
break;
case PaintOrder::StrokeMarkers:
paintOrder.append(PaintType::Stroke);
paintOrder.append(PaintType::Markers);
paintOrder.append(PaintType::Fill);
break;
case PaintOrder::Markers:
paintOrder.append(PaintType::Markers);
paintOrder.append(PaintType::Fill);
paintOrder.append(PaintType::Stroke);
break;
case PaintOrder::MarkersStroke:
paintOrder.append(PaintType::Markers);
paintOrder.append(PaintType::Stroke);
paintOrder.append(PaintType::Fill);
break;
};
return paintOrder;
}
float RenderStyle::computedStrokeWidth(const IntSize& viewportSize) const
{
// Use the stroke-width and stroke-color value combination only if stroke-color has been explicitly specified.
// Since there will be no visible stroke when stroke-color is not specified (transparent by default), we fall
// back to the legacy Webkit text stroke combination in that case.
if (!hasExplicitlySetStrokeColor())
return textStrokeWidth();
const Length& length = strokeWidth();
if (length.isPercent()) {
// According to the spec, https://drafts.fxtf.org/paint/#stroke-width, the percentage is relative to the scaled viewport size.
// The scaled viewport size is the geometric mean of the viewport width and height.
ExceptionOr<float> result = length.value() * (viewportSize.width() + viewportSize.height()) / 200.0f;
if (result.hasException())
return 0;
return result.releaseReturnValue();
}
if (length.isAuto() || !length.isSpecified())
return 0;
return floatValueForLength(length, viewportSize.width());
}
bool RenderStyle::hasPositiveStrokeWidth() const
{
if (!hasExplicitlySetStrokeWidth())
return textStrokeWidth() > 0;
return strokeWidth().isPositive();
}
Color RenderStyle::computedStrokeColor() const
{
return visitedDependentColor(effectiveStrokeColorProperty());
}
UsedClear RenderStyle::usedClear(const RenderObject& renderer)
{
auto computedValue = renderer.style().clear();
switch (computedValue) {
case Clear::None:
return UsedClear::None;
case Clear::Left:
return UsedClear::Left;
case Clear::Right:
return UsedClear::Right;
case Clear::Both:
return UsedClear::Both;
case Clear::InlineStart:
case Clear::InlineEnd:
auto containingBlockDirection = renderer.containingBlock()->style().direction();
if (containingBlockDirection == TextDirection::RTL)
return computedValue == Clear::InlineStart ? UsedClear::Right : UsedClear::Left;
return computedValue == Clear::InlineStart ? UsedClear::Left : UsedClear::Right;
}
RELEASE_ASSERT_NOT_REACHED();
}
UsedFloat RenderStyle::usedFloat(const RenderObject& renderer)
{
auto computedValue = renderer.style().floating();
switch (computedValue) {
case Float::None:
return UsedFloat::None;
case Float::Left:
return UsedFloat::Left;
case Float::Right:
return UsedFloat::Right;
case Float::InlineStart:
case Float::InlineEnd:
auto containingBlockDirection = renderer.containingBlock()->style().direction();
if (containingBlockDirection == TextDirection::RTL)
return computedValue == Float::InlineStart ? UsedFloat::Right : UsedFloat::Left;
return computedValue == Float::InlineStart ? UsedFloat::Left : UsedFloat::Right;
}
RELEASE_ASSERT_NOT_REACHED();
}
UserSelect RenderStyle::effectiveUserSelect() const
{
if (effectiveInert())
return UserSelect::None;
auto value = userSelect();
if (userModify() != UserModify::ReadOnly && userDrag() != UserDrag::Element)
return value == UserSelect::None ? UserSelect::Text : value;
return value;
}
} // namespace WebCore