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chromium / chromium / src / 01ce431409e3a019858677626a983c55168da6dc / . / third_party / WebKit / Source / core / style / ComputedStyle.cpp
blob: 33ee08dfcad4107811b9849b87b02be30f2d8cd6 [file] [log] [blame]
/*
* Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 "core/style/ComputedStyle.h"
#include "core/animation/css/CSSAnimationData.h"
#include "core/animation/css/CSSTransitionData.h"
#include "core/css/CSSPaintValue.h"
#include "core/css/CSSPrimitiveValue.h"
#include "core/css/CSSPropertyEquality.h"
#include "core/css/resolver/StyleResolver.h"
#include "core/layout/LayoutTheme.h"
#include "core/layout/TextAutosizer.h"
#include "core/style/AppliedTextDecoration.h"
#include "core/style/BorderEdge.h"
#include "core/style/ComputedStyleConstants.h"
#include "core/style/ContentData.h"
#include "core/style/CursorData.h"
#include "core/style/DataEquivalency.h"
#include "core/style/QuotesData.h"
#include "core/style/ShadowList.h"
#include "core/style/StyleImage.h"
#include "core/style/StyleInheritedData.h"
#include "core/style/StyleVariableData.h"
#include "platform/LengthFunctions.h"
#include "platform/RuntimeEnabledFeatures.h"
#include "platform/fonts/Font.h"
#include "platform/fonts/FontSelector.h"
#include "platform/geometry/FloatRoundedRect.h"
#include "platform/graphics/GraphicsContext.h"
#include "platform/transforms/RotateTransformOperation.h"
#include "platform/transforms/ScaleTransformOperation.h"
#include "platform/transforms/TranslateTransformOperation.h"
#include "wtf/MathExtras.h"
#include "wtf/PtrUtil.h"
#include "wtf/SaturatedArithmetic.h"
#include <algorithm>
#include <memory>
namespace blink {
struct SameSizeAsBorderValue {
RGBA32 m_color;
unsigned m_width;
};
static_assert(sizeof(BorderValue) == sizeof(SameSizeAsBorderValue), "BorderValue should stay small");
// Since different compilers/architectures pack ComputedStyle differently,
// re-create the same structure for an accurate size comparison.
struct SameSizeAsComputedStyle : public RefCounted<SameSizeAsComputedStyle> {
void* dataRefs[7];
void* ownPtrs[1];
void* dataRefSvgStyle;
struct InheritedData {
unsigned m_bitfields[2];
} m_inheritedData;
struct NonInheritedData {
unsigned m_bitfields[3];
} m_nonInheritedData;
};
static_assert(sizeof(ComputedStyle) == sizeof(SameSizeAsComputedStyle), "ComputedStyle should stay small");
PassRefPtr<ComputedStyle> ComputedStyle::create()
{
return adoptRef(new ComputedStyle());
}
PassRefPtr<ComputedStyle> ComputedStyle::createInitialStyle()
{
return adoptRef(new ComputedStyle(InitialStyle));
}
void ComputedStyle::invalidateInitialStyle()
{
mutableInitialStyle().setTapHighlightColor(initialTapHighlightColor());
}
PassRefPtr<ComputedStyle> ComputedStyle::createAnonymousStyleWithDisplay(const ComputedStyle& parentStyle, EDisplay display)
{
RefPtr<ComputedStyle> newStyle = ComputedStyle::create();
newStyle->inheritFrom(parentStyle);
newStyle->inheritUnicodeBidiFrom(parentStyle);
newStyle->setDisplay(display);
return newStyle;
}
PassRefPtr<ComputedStyle> ComputedStyle::clone(const ComputedStyle& other)
{
return adoptRef(new ComputedStyle(other));
}
ALWAYS_INLINE ComputedStyle::ComputedStyle()
: m_box(initialStyle().m_box)
, m_visual(initialStyle().m_visual)
, m_background(initialStyle().m_background)
, m_surround(initialStyle().m_surround)
, m_rareNonInheritedData(initialStyle().m_rareNonInheritedData)
, m_rareInheritedData(initialStyle().m_rareInheritedData)
, m_styleInheritedData(initialStyle().m_styleInheritedData)
, m_svgStyle(initialStyle().m_svgStyle)
{
setBitDefaults(); // Would it be faster to copy this from the default style?
static_assert((sizeof(InheritedData) <= 8), "InheritedData should not grow");
static_assert((sizeof(NonInheritedData) <= 12), "NonInheritedData should not grow");
}
ALWAYS_INLINE ComputedStyle::ComputedStyle(InitialStyleTag)
{
setBitDefaults();
m_box.init();
m_visual.init();
m_background.init();
m_surround.init();
m_rareNonInheritedData.init();
m_rareNonInheritedData.access()->m_deprecatedFlexibleBox.init();
m_rareNonInheritedData.access()->m_flexibleBox.init();
m_rareNonInheritedData.access()->m_multiCol.init();
m_rareNonInheritedData.access()->m_transform.init();
m_rareNonInheritedData.access()->m_willChange.init();
m_rareNonInheritedData.access()->m_filter.init();
m_rareNonInheritedData.access()->m_backdropFilter.init();
m_rareNonInheritedData.access()->m_grid.init();
m_rareNonInheritedData.access()->m_gridItem.init();
m_rareNonInheritedData.access()->m_scrollSnap.init();
m_rareInheritedData.init();
m_styleInheritedData.init();
m_svgStyle.init();
}
ALWAYS_INLINE ComputedStyle::ComputedStyle(const ComputedStyle& o)
: RefCounted<ComputedStyle>()
, m_box(o.m_box)
, m_visual(o.m_visual)
, m_background(o.m_background)
, m_surround(o.m_surround)
, m_rareNonInheritedData(o.m_rareNonInheritedData)
, m_rareInheritedData(o.m_rareInheritedData)
, m_styleInheritedData(o.m_styleInheritedData)
, m_svgStyle(o.m_svgStyle)
, m_inheritedData(o.m_inheritedData)
, m_nonInheritedData(o.m_nonInheritedData)
{
}
static StyleRecalcChange diffPseudoStyles(const ComputedStyle& oldStyle, const ComputedStyle& newStyle)
{
// If the pseudoStyles have changed, we want any StyleRecalcChange that is not NoChange
// because setStyle will do the right thing with anything else.
if (!oldStyle.hasAnyPublicPseudoStyles())
return NoChange;
for (PseudoId pseudoId = FirstPublicPseudoId; pseudoId < FirstInternalPseudoId; pseudoId = static_cast<PseudoId>(pseudoId + 1)) {
if (!oldStyle.hasPseudoStyle(pseudoId))
continue;
const ComputedStyle* newPseudoStyle = newStyle.getCachedPseudoStyle(pseudoId);
if (!newPseudoStyle)
return NoInherit;
const ComputedStyle* oldPseudoStyle = oldStyle.getCachedPseudoStyle(pseudoId);
if (oldPseudoStyle && *oldPseudoStyle != *newPseudoStyle)
return NoInherit;
}
return NoChange;
}
StyleRecalcChange ComputedStyle::stylePropagationDiff(const ComputedStyle* oldStyle, const ComputedStyle* newStyle)
{
if ((!oldStyle && newStyle) || (oldStyle && !newStyle))
return Reattach;
if (!oldStyle && !newStyle)
return NoChange;
if (oldStyle->display() != newStyle->display()
|| oldStyle->hasPseudoStyle(PseudoIdFirstLetter) != newStyle->hasPseudoStyle(PseudoIdFirstLetter)
|| !oldStyle->contentDataEquivalent(newStyle)
|| oldStyle->hasTextCombine() != newStyle->hasTextCombine())
return Reattach;
bool independentEqual = oldStyle->independentInheritedEqual(*newStyle);
bool nonIndependentEqual = oldStyle->nonIndependentInheritedEqual(*newStyle);
if (!independentEqual || !nonIndependentEqual) {
if (nonIndependentEqual && !oldStyle->hasExplicitlyInheritedProperties())
return IndependentInherit;
return Inherit;
}
if (!oldStyle->loadingCustomFontsEqual(*newStyle)
|| oldStyle->alignItems() != newStyle->alignItems()
|| oldStyle->justifyItems() != newStyle->justifyItems())
return Inherit;
if (*oldStyle == *newStyle)
return diffPseudoStyles(*oldStyle, *newStyle);
if (oldStyle->hasExplicitlyInheritedProperties())
return Inherit;
return NoInherit;
}
// TODO(sashab): Generate this function.
void ComputedStyle::propagateIndependentInheritedProperties(const ComputedStyle& parentStyle)
{
if (m_nonInheritedData.m_isPointerEventsInherited)
setPointerEvents(parentStyle.pointerEvents());
if (m_nonInheritedData.m_isVisibilityInherited)
setVisibility(parentStyle.visibility());
}
StyleSelfAlignmentData resolvedSelfAlignment(const StyleSelfAlignmentData& value, ItemPosition normalValueBehavior)
{
// To avoid needing to copy the RareNonInheritedData, we repurpose the 'auto' flag to not just mean 'auto' prior to running the StyleAdjuster but also mean 'normal' after running it.
if (value.position() == ItemPositionNormal || value.position() == ItemPositionAuto)
return {normalValueBehavior, OverflowAlignmentDefault};
return value;
}
StyleSelfAlignmentData ComputedStyle::resolvedAlignItems(ItemPosition normalValueBehaviour) const
{
// We will return the behaviour of 'normal' value if needed, which is specific of each layout model.
return resolvedSelfAlignment(alignItems(), normalValueBehaviour);
}
StyleSelfAlignmentData ComputedStyle::resolvedAlignSelf(ItemPosition normalValueBehaviour, const ComputedStyle* parentStyle) const
{
// We will return the behaviour of 'normal' value if needed, which is specific of each layout model.
if (!parentStyle || alignSelfPosition() != ItemPositionAuto)
return resolvedSelfAlignment(alignSelf(), normalValueBehaviour);
// We shouldn't need to resolve any 'auto' value in post-adjusment ComputedStyle, but some layout models
// can generate anonymous boxes that may need 'auto' value resolution during layout.
// The 'auto' keyword computes to the parent's align-items computed value.
return parentStyle->resolvedAlignItems(normalValueBehaviour);
}
StyleSelfAlignmentData ComputedStyle::resolvedJustifyItems(ItemPosition normalValueBehaviour) const
{
// We will return the behaviour of 'normal' value if needed, which is specific of each layout model.
return resolvedSelfAlignment(justifyItems(), normalValueBehaviour);
}
StyleSelfAlignmentData ComputedStyle::resolvedJustifySelf(ItemPosition normalValueBehaviour, const ComputedStyle* parentStyle) const
{
// We will return the behaviour of 'normal' value if needed, which is specific of each layout model.
if (!parentStyle || justifySelfPosition() != ItemPositionAuto)
return resolvedSelfAlignment(justifySelf(), normalValueBehaviour);
// We shouldn't need to resolve any 'auto' value in post-adjusment ComputedStyle, but some layout models
// can generate anonymous boxes that may need 'auto' value resolution during layout.
// The auto keyword computes to the parent's justify-items computed value.
return parentStyle->resolvedJustifyItems(normalValueBehaviour);
}
static inline ContentPosition resolvedContentAlignmentPosition(const StyleContentAlignmentData& value, const StyleContentAlignmentData& normalValueBehavior)
{
return (value.position() == ContentPositionNormal && value.distribution() == ContentDistributionDefault) ? normalValueBehavior.position() : value.position();
}
static inline ContentDistributionType resolvedContentAlignmentDistribution(const StyleContentAlignmentData& value, const StyleContentAlignmentData& normalValueBehavior)
{
return (value.position() == ContentPositionNormal && value.distribution() == ContentDistributionDefault) ? normalValueBehavior.distribution() : value.distribution();
}
ContentPosition ComputedStyle::resolvedJustifyContentPosition(const StyleContentAlignmentData& normalValueBehavior) const
{
return resolvedContentAlignmentPosition(justifyContent(), normalValueBehavior);
}
ContentDistributionType ComputedStyle::resolvedJustifyContentDistribution(const StyleContentAlignmentData& normalValueBehavior) const
{
return resolvedContentAlignmentDistribution(justifyContent(), normalValueBehavior);
}
ContentPosition ComputedStyle::resolvedAlignContentPosition(const StyleContentAlignmentData& normalValueBehavior) const
{
return resolvedContentAlignmentPosition(alignContent(), normalValueBehavior);
}
ContentDistributionType ComputedStyle::resolvedAlignContentDistribution(const StyleContentAlignmentData& normalValueBehavior) const
{
return resolvedContentAlignmentDistribution(alignContent(), normalValueBehavior);
}
void ComputedStyle::inheritFrom(const ComputedStyle& inheritParent, IsAtShadowBoundary isAtShadowBoundary)
{
if (isAtShadowBoundary == AtShadowBoundary) {
// Even if surrounding content is user-editable, shadow DOM should act as a single unit, and not necessarily be editable
EUserModify currentUserModify = userModify();
m_rareInheritedData = inheritParent.m_rareInheritedData;
setUserModify(currentUserModify);
} else {
m_rareInheritedData = inheritParent.m_rareInheritedData;
}
m_styleInheritedData = inheritParent.m_styleInheritedData;
m_inheritedData = inheritParent.m_inheritedData;
if (m_svgStyle != inheritParent.m_svgStyle)
m_svgStyle.access()->inheritFrom(inheritParent.m_svgStyle.get());
}
void ComputedStyle::copyNonInheritedFromCached(const ComputedStyle& other)
{
m_box = other.m_box;
m_visual = other.m_visual;
m_background = other.m_background;
m_surround = other.m_surround;
m_rareNonInheritedData = other.m_rareNonInheritedData;
// The flags are copied one-by-one because m_nonInheritedData.m_contains a bunch of stuff other than real style data.
// See comments for each skipped flag below.
m_nonInheritedData.m_effectiveDisplay = other.m_nonInheritedData.m_effectiveDisplay;
m_nonInheritedData.m_originalDisplay = other.m_nonInheritedData.m_originalDisplay;
m_nonInheritedData.m_overflowAnchor = other.m_nonInheritedData.m_overflowAnchor;
m_nonInheritedData.m_overflowX = other.m_nonInheritedData.m_overflowX;
m_nonInheritedData.m_overflowY = other.m_nonInheritedData.m_overflowY;
m_nonInheritedData.m_verticalAlign = other.m_nonInheritedData.m_verticalAlign;
m_nonInheritedData.m_clear = other.m_nonInheritedData.m_clear;
m_nonInheritedData.m_position = other.m_nonInheritedData.m_position;
m_nonInheritedData.m_floating = other.m_nonInheritedData.m_floating;
m_nonInheritedData.m_tableLayout = other.m_nonInheritedData.m_tableLayout;
m_nonInheritedData.m_unicodeBidi = other.m_nonInheritedData.m_unicodeBidi;
m_nonInheritedData.m_hasViewportUnits = other.m_nonInheritedData.m_hasViewportUnits;
m_nonInheritedData.m_breakBefore = other.m_nonInheritedData.m_breakBefore;
m_nonInheritedData.m_breakAfter = other.m_nonInheritedData.m_breakAfter;
m_nonInheritedData.m_breakInside = other.m_nonInheritedData.m_breakInside;
m_nonInheritedData.m_hasRemUnits = other.m_nonInheritedData.m_hasRemUnits;
// Correctly set during selector matching:
// m_nonInheritedData.m_styleType
// m_nonInheritedData.m_pseudoBits
// Set correctly while computing style for children:
// m_nonInheritedData.m_explicitInheritance
// unique() styles are not cacheable.
DCHECK(!other.m_nonInheritedData.m_unique);
// styles with non inherited properties that reference variables are not
// cacheable.
DCHECK(!other.m_nonInheritedData.m_variableReference);
// The following flags are set during matching before we decide that we get a
// match in the MatchedPropertiesCache which in turn calls this method. The
// reason why we don't copy these flags is that they're already correctly set
// and that they may differ between elements which have the same set of matched
// properties. For instance, given the rule:
//
// :-webkit-any(:hover, :focus) { background-color: green }"
//
// A hovered element, and a focused element may use the same cached matched
// properties here, but the affectedBy flags will be set differently based on
// the matching order of the :-webkit-any components.
//
// m_nonInheritedData.m_emptyState
// m_nonInheritedData.m_affectedByFocus
// m_nonInheritedData.m_affectedByHover
// m_nonInheritedData.m_affectedByActive
// m_nonInheritedData.m_affectedByDrag
// m_nonInheritedData.m_isLink
// Any properties that are inherited on a style are also inherited on elements
// that share this style.
m_nonInheritedData.m_isPointerEventsInherited = other.m_nonInheritedData.m_isPointerEventsInherited;
m_nonInheritedData.m_isVisibilityInherited = other.m_nonInheritedData.m_isVisibilityInherited;
if (m_svgStyle != other.m_svgStyle)
m_svgStyle.access()->copyNonInheritedFromCached(other.m_svgStyle.get());
DCHECK_EQ(zoom(), initialZoom());
}
bool ComputedStyle::operator==(const ComputedStyle& o) const
{
return inheritedEqual(o)
&& nonInheritedEqual(o);
}
bool ComputedStyle::isStyleAvailable() const
{
return this != StyleResolver::styleNotYetAvailable();
}
bool ComputedStyle::hasUniquePseudoStyle() const
{
if (!m_cachedPseudoStyles || styleType() != PseudoIdNone)
return false;
for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) {
const ComputedStyle& pseudoStyle = *m_cachedPseudoStyles->at(i);
if (pseudoStyle.unique())
return true;
}
return false;
}
ComputedStyle* ComputedStyle::getCachedPseudoStyle(PseudoId pid) const
{
if (!m_cachedPseudoStyles || !m_cachedPseudoStyles->size())
return 0;
if (styleType() != PseudoIdNone)
return 0;
for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) {
ComputedStyle* pseudoStyle = m_cachedPseudoStyles->at(i).get();
if (pseudoStyle->styleType() == pid)
return pseudoStyle;
}
return 0;
}
ComputedStyle* ComputedStyle::addCachedPseudoStyle(PassRefPtr<ComputedStyle> pseudo)
{
if (!pseudo)
return 0;
ASSERT(pseudo->styleType() > PseudoIdNone);
ComputedStyle* result = pseudo.get();
if (!m_cachedPseudoStyles)
m_cachedPseudoStyles = wrapUnique(new PseudoStyleCache);
m_cachedPseudoStyles->append(pseudo);
return result;
}
void ComputedStyle::removeCachedPseudoStyle(PseudoId pid)
{
if (!m_cachedPseudoStyles)
return;
for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) {
ComputedStyle* pseudoStyle = m_cachedPseudoStyles->at(i).get();
if (pseudoStyle->styleType() == pid) {
m_cachedPseudoStyles->remove(i);
return;
}
}
}
bool ComputedStyle::inheritedEqual(const ComputedStyle& other) const
{
return independentInheritedEqual(other)
&& nonIndependentInheritedEqual(other);
}
bool ComputedStyle::independentInheritedEqual(const ComputedStyle& other) const
{
return m_inheritedData.compareEqualIndependent(other.m_inheritedData);
}
bool ComputedStyle::nonIndependentInheritedEqual(const ComputedStyle& other) const
{
return m_inheritedData.compareEqualNonIndependent(other.m_inheritedData)
&& m_styleInheritedData == other.m_styleInheritedData
&& m_svgStyle->inheritedEqual(*other.m_svgStyle)
&& m_rareInheritedData == other.m_rareInheritedData;
}
bool ComputedStyle::loadingCustomFontsEqual(const ComputedStyle& other) const
{
return font().loadingCustomFonts() == other.font().loadingCustomFonts();
}
bool ComputedStyle::nonInheritedEqual(const ComputedStyle& other) const
{
// compare everything except the pseudoStyle pointer
return m_nonInheritedData == other.m_nonInheritedData
&& m_box == other.m_box
&& m_visual == other.m_visual
&& m_background == other.m_background
&& m_surround == other.m_surround
&& m_rareNonInheritedData == other.m_rareNonInheritedData
&& m_svgStyle->nonInheritedEqual(*other.m_svgStyle);
}
bool ComputedStyle::inheritedDataShared(const ComputedStyle& other) const
{
// This is a fast check that only looks if the data structures are shared.
return m_inheritedData == other.m_inheritedData
&& m_styleInheritedData.get() == other.m_styleInheritedData.get()
&& m_svgStyle.get() == other.m_svgStyle.get()
&& m_rareInheritedData.get() == other.m_rareInheritedData.get();
}
static bool dependenceOnContentHeightHasChanged(const ComputedStyle& a, const ComputedStyle& b)
{
// If top or bottom become auto/non-auto then it means we either have to solve height based
// on the content or stop doing so (http://www.w3.org/TR/CSS2/visudet.html#abs-non-replaced-height)
// - either way requires a layout.
return a.logicalTop().isAuto() != b.logicalTop().isAuto() || a.logicalBottom().isAuto() != b.logicalBottom().isAuto();
}
StyleDifference ComputedStyle::visualInvalidationDiff(const ComputedStyle& other) const
{
// Note, we use .get() on each DataRef below because DataRef::operator== will do a deep
// compare, which is duplicate work when we're going to compare each property inside
// this function anyway.
StyleDifference diff;
if (m_svgStyle.get() != other.m_svgStyle.get())
diff = m_svgStyle->diff(other.m_svgStyle.get());
if ((!diff.needsFullLayout() || !diff.needsPaintInvalidation()) && diffNeedsFullLayoutAndPaintInvalidation(other)) {
diff.setNeedsFullLayout();
diff.setNeedsPaintInvalidationObject();
}
if (!diff.needsFullLayout() && diffNeedsFullLayout(other))
diff.setNeedsFullLayout();
if (!diff.needsFullLayout() && m_surround->margin != other.m_surround->margin) {
// Relative-positioned elements collapse their margins so need a full layout.
if (hasOutOfFlowPosition())
diff.setNeedsPositionedMovementLayout();
else
diff.setNeedsFullLayout();
}
if (!diff.needsFullLayout() && position() != StaticPosition && m_surround->offset != other.m_surround->offset) {
// Optimize for the case where a positioned layer is moving but not changing size.
if (dependenceOnContentHeightHasChanged(*this, other))
diff.setNeedsFullLayout();
else
diff.setNeedsPositionedMovementLayout();
}
if (diffNeedsPaintInvalidationSubtree(other))
diff.setNeedsPaintInvalidationSubtree();
else if (diffNeedsPaintInvalidationObject(other))
diff.setNeedsPaintInvalidationObject();
updatePropertySpecificDifferences(other, diff);
// TODO(skobes): Refine the criteria for ScrollAnchor-disabling properties.
// Some things set needsLayout but shouldn't disable scroll anchoring.
if (diff.needsLayout() || diff.transformChanged())
diff.setScrollAnchorDisablingPropertyChanged();
// Cursors are not checked, since they will be set appropriately in response to mouse events,
// so they don't need to cause any paint invalidation or layout.
// Animations don't need to be checked either. We always set the new style on the layoutObject, so we will get a chance to fire off
// the resulting transition properly.
return diff;
}
bool ComputedStyle::diffNeedsFullLayoutAndPaintInvalidation(const ComputedStyle& other) const
{
// FIXME: Not all cases in this method need both full layout and paint invalidation.
// Should move cases into diffNeedsFullLayout() if
// - don't need paint invalidation at all;
// - or the layoutObject knows how to exactly invalidate paints caused by the layout change
// instead of forced full paint invalidation.
if (m_surround.get() != other.m_surround.get()) {
// If our border widths change, then we need to layout. Other changes to borders only necessitate a paint invalidation.
if (borderLeftWidth() != other.borderLeftWidth()
|| borderTopWidth() != other.borderTopWidth()
|| borderBottomWidth() != other.borderBottomWidth()
|| borderRightWidth() != other.borderRightWidth())
return true;
}
if (m_rareNonInheritedData.get() != other.m_rareNonInheritedData.get()) {
if (m_rareNonInheritedData->m_appearance != other.m_rareNonInheritedData->m_appearance
|| m_rareNonInheritedData->marginBeforeCollapse != other.m_rareNonInheritedData->marginBeforeCollapse
|| m_rareNonInheritedData->marginAfterCollapse != other.m_rareNonInheritedData->marginAfterCollapse
|| m_rareNonInheritedData->lineClamp != other.m_rareNonInheritedData->lineClamp
|| m_rareNonInheritedData->textOverflow != other.m_rareNonInheritedData->textOverflow
|| m_rareNonInheritedData->m_shapeMargin != other.m_rareNonInheritedData->m_shapeMargin
|| m_rareNonInheritedData->m_order != other.m_rareNonInheritedData->m_order
|| m_rareNonInheritedData->hasFilters() != other.m_rareNonInheritedData->hasFilters())
return true;
if (m_rareNonInheritedData->m_grid.get() != other.m_rareNonInheritedData->m_grid.get()
&& *m_rareNonInheritedData->m_grid.get() != *other.m_rareNonInheritedData->m_grid.get())
return true;
if (m_rareNonInheritedData->m_gridItem.get() != other.m_rareNonInheritedData->m_gridItem.get()
&& *m_rareNonInheritedData->m_gridItem.get() != *other.m_rareNonInheritedData->m_gridItem.get())
return true;
if (m_rareNonInheritedData->m_deprecatedFlexibleBox.get() != other.m_rareNonInheritedData->m_deprecatedFlexibleBox.get()
&& *m_rareNonInheritedData->m_deprecatedFlexibleBox.get() != *other.m_rareNonInheritedData->m_deprecatedFlexibleBox.get())
return true;
if (m_rareNonInheritedData->m_flexibleBox.get() != other.m_rareNonInheritedData->m_flexibleBox.get()
&& *m_rareNonInheritedData->m_flexibleBox.get() != *other.m_rareNonInheritedData->m_flexibleBox.get())
return true;
if (m_rareNonInheritedData->m_multiCol.get() != other.m_rareNonInheritedData->m_multiCol.get()
&& *m_rareNonInheritedData->m_multiCol.get() != *other.m_rareNonInheritedData->m_multiCol.get())
return true;
// If the counter directives change, trigger a relayout to re-calculate counter values and rebuild the counter node tree.
const CounterDirectiveMap* mapA = m_rareNonInheritedData->m_counterDirectives.get();
const CounterDirectiveMap* mapB = other.m_rareNonInheritedData->m_counterDirectives.get();
if (!(mapA == mapB || (mapA && mapB && *mapA == *mapB)))
return true;
// We only need do layout for opacity changes if adding or losing opacity could trigger a change
// in us being a stacking context.
if (isStackingContext() != other.isStackingContext() && m_rareNonInheritedData->hasOpacity() != other.m_rareNonInheritedData->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 LayoutInlines (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 (m_rareInheritedData.get() != other.m_rareInheritedData.get()) {
if (m_rareInheritedData->highlight != other.m_rareInheritedData->highlight
|| m_rareInheritedData->indent != other.m_rareInheritedData->indent
|| m_rareInheritedData->m_textAlignLast != other.m_rareInheritedData->m_textAlignLast
|| m_rareInheritedData->m_textIndentLine != other.m_rareInheritedData->m_textIndentLine
|| m_rareInheritedData->m_effectiveZoom != other.m_rareInheritedData->m_effectiveZoom
|| m_rareInheritedData->wordBreak != other.m_rareInheritedData->wordBreak
|| m_rareInheritedData->overflowWrap != other.m_rareInheritedData->overflowWrap
|| m_rareInheritedData->lineBreak != other.m_rareInheritedData->lineBreak
|| m_rareInheritedData->textSecurity != other.m_rareInheritedData->textSecurity
|| m_rareInheritedData->hyphens != other.m_rareInheritedData->hyphens
|| m_rareInheritedData->hyphenationLimitBefore != other.m_rareInheritedData->hyphenationLimitBefore
|| m_rareInheritedData->hyphenationLimitAfter != other.m_rareInheritedData->hyphenationLimitAfter
|| m_rareInheritedData->hyphenationString != other.m_rareInheritedData->hyphenationString
|| m_rareInheritedData->m_respectImageOrientation != other.m_rareInheritedData->m_respectImageOrientation
|| m_rareInheritedData->m_rubyPosition != other.m_rareInheritedData->m_rubyPosition
|| m_rareInheritedData->textEmphasisMark != other.m_rareInheritedData->textEmphasisMark
|| m_rareInheritedData->textEmphasisPosition != other.m_rareInheritedData->textEmphasisPosition
|| m_rareInheritedData->textEmphasisCustomMark != other.m_rareInheritedData->textEmphasisCustomMark
|| m_rareInheritedData->m_textJustify != other.m_rareInheritedData->m_textJustify
|| m_rareInheritedData->m_textOrientation != other.m_rareInheritedData->m_textOrientation
|| m_rareInheritedData->m_textCombine != other.m_rareInheritedData->m_textCombine
|| m_rareInheritedData->m_tabSize != other.m_rareInheritedData->m_tabSize
|| m_rareInheritedData->m_textSizeAdjust != other.m_rareInheritedData->m_textSizeAdjust
|| m_rareInheritedData->listStyleImage != other.m_rareInheritedData->listStyleImage
|| m_rareInheritedData->m_snapHeightUnit != other.m_rareInheritedData->m_snapHeightUnit
|| m_rareInheritedData->m_snapHeightPosition != other.m_rareInheritedData->m_snapHeightPosition
|| m_rareInheritedData->textStrokeWidth != other.m_rareInheritedData->textStrokeWidth)
return true;
if (!m_rareInheritedData->shadowDataEquivalent(*other.m_rareInheritedData.get()))
return true;
if (!m_rareInheritedData->quotesDataEquivalent(*other.m_rareInheritedData.get()))
return true;
}
if (m_styleInheritedData->textAutosizingMultiplier != other.m_styleInheritedData->textAutosizingMultiplier)
return true;
if (m_styleInheritedData->font.loadingCustomFonts() != other.m_styleInheritedData->font.loadingCustomFonts())
return true;
if (m_styleInheritedData.get() != other.m_styleInheritedData.get()) {
if (m_styleInheritedData->line_height != other.m_styleInheritedData->line_height
|| m_styleInheritedData->font != other.m_styleInheritedData->font
|| m_styleInheritedData->horizontal_border_spacing != other.m_styleInheritedData->horizontal_border_spacing
|| m_styleInheritedData->vertical_border_spacing != other.m_styleInheritedData->vertical_border_spacing)
return true;
}
if (m_inheritedData.m_boxDirection != other.m_inheritedData.m_boxDirection
|| m_inheritedData.m_rtlOrdering != other.m_inheritedData.m_rtlOrdering
|| m_inheritedData.m_textAlign != other.m_inheritedData.m_textAlign
|| m_inheritedData.m_textTransform != other.m_inheritedData.m_textTransform
|| m_inheritedData.m_direction != other.m_inheritedData.m_direction
|| m_inheritedData.m_whiteSpace != other.m_inheritedData.m_whiteSpace
|| m_inheritedData.m_writingMode != other.m_inheritedData.m_writingMode)
return true;
if (m_nonInheritedData.m_overflowX != other.m_nonInheritedData.m_overflowX
|| m_nonInheritedData.m_overflowY != other.m_nonInheritedData.m_overflowY
|| m_nonInheritedData.m_clear != other.m_nonInheritedData.m_clear
|| m_nonInheritedData.m_unicodeBidi != other.m_nonInheritedData.m_unicodeBidi
|| m_nonInheritedData.m_floating != other.m_nonInheritedData.m_floating
|| m_nonInheritedData.m_originalDisplay != other.m_nonInheritedData.m_originalDisplay)
return true;
if (m_nonInheritedData.m_effectiveDisplay >= FIRST_TABLE_DISPLAY && m_nonInheritedData.m_effectiveDisplay <= LAST_TABLE_DISPLAY) {
if (m_inheritedData.m_borderCollapse != other.m_inheritedData.m_borderCollapse
|| m_inheritedData.m_emptyCells != other.m_inheritedData.m_emptyCells
|| m_inheritedData.m_captionSide != other.m_inheritedData.m_captionSide
|| m_nonInheritedData.m_tableLayout != other.m_nonInheritedData.m_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_inheritedData.m_borderCollapse
&& ((borderTopStyle() == BorderStyleHidden && other.borderTopStyle() == BorderStyleNone)
|| (borderTopStyle() == BorderStyleNone && other.borderTopStyle() == BorderStyleHidden)
|| (borderBottomStyle() == BorderStyleHidden && other.borderBottomStyle() == BorderStyleNone)
|| (borderBottomStyle() == BorderStyleNone && other.borderBottomStyle() == BorderStyleHidden)
|| (borderLeftStyle() == BorderStyleHidden && other.borderLeftStyle() == BorderStyleNone)
|| (borderLeftStyle() == BorderStyleNone && other.borderLeftStyle() == BorderStyleHidden)
|| (borderRightStyle() == BorderStyleHidden && other.borderRightStyle() == BorderStyleNone)
|| (borderRightStyle() == BorderStyleNone && other.borderRightStyle() == BorderStyleHidden)))
return true;
} else if (m_nonInheritedData.m_effectiveDisplay == LIST_ITEM) {
if (m_inheritedData.m_listStyleType != other.m_inheritedData.m_listStyleType
|| m_inheritedData.m_listStylePosition != other.m_inheritedData.m_listStylePosition)
return true;
}
if ((visibility() == EVisibility::Collapse) != (other.visibility() == EVisibility::Collapse))
return true;
if (hasPseudoStyle(PseudoIdScrollbar) != other.hasPseudoStyle(PseudoIdScrollbar))
return true;
// Movement of non-static-positioned object is special cased in ComputedStyle::visualInvalidationDiff().
return false;
}
bool ComputedStyle::diffNeedsFullLayout(const ComputedStyle& other) const
{
if (m_box.get() != other.m_box.get()) {
if (m_box->width() != other.m_box->width()
|| m_box->minWidth() != other.m_box->minWidth()
|| m_box->maxWidth() != other.m_box->maxWidth()
|| m_box->height() != other.m_box->height()
|| m_box->minHeight() != other.m_box->minHeight()
|| m_box->maxHeight() != other.m_box->maxHeight())
return true;
if (m_box->verticalAlign() != other.m_box->verticalAlign())
return true;
if (m_box->boxSizing() != other.m_box->boxSizing())
return true;
}
if (m_nonInheritedData.m_verticalAlign != other.m_nonInheritedData.m_verticalAlign
|| m_nonInheritedData.m_position != other.m_nonInheritedData.m_position)
return true;
if (m_surround.get() != other.m_surround.get()) {
if (m_surround->padding != other.m_surround->padding)
return true;
}
if (m_rareNonInheritedData.get() != other.m_rareNonInheritedData.get()) {
if (m_rareNonInheritedData->m_alignContent != other.m_rareNonInheritedData->m_alignContent
|| m_rareNonInheritedData->m_alignItems != other.m_rareNonInheritedData->m_alignItems
|| m_rareNonInheritedData->m_alignSelf != other.m_rareNonInheritedData->m_alignSelf
|| m_rareNonInheritedData->m_justifyContent != other.m_rareNonInheritedData->m_justifyContent
|| m_rareNonInheritedData->m_justifyItems != other.m_rareNonInheritedData->m_justifyItems
|| m_rareNonInheritedData->m_justifySelf != other.m_rareNonInheritedData->m_justifySelf
|| m_rareNonInheritedData->m_contain != other.m_rareNonInheritedData->m_contain)
return true;
if (!RuntimeEnabledFeatures::cssBoxReflectFilterEnabled() && !m_rareNonInheritedData->reflectionDataEquivalent(*other.m_rareNonInheritedData.get()))
return true;
}
return false;
}
bool ComputedStyle::diffNeedsPaintInvalidationSubtree(const ComputedStyle& other) const
{
if (position() != StaticPosition && (m_visual->clip != other.m_visual->clip || m_visual->hasAutoClip != other.m_visual->hasAutoClip))
return true;
if (m_rareNonInheritedData.get() != other.m_rareNonInheritedData.get()) {
if (m_rareNonInheritedData->m_effectiveBlendMode != other.m_rareNonInheritedData->m_effectiveBlendMode
|| m_rareNonInheritedData->m_isolation != other.m_rareNonInheritedData->m_isolation)
return true;
if (m_rareNonInheritedData->m_mask != other.m_rareNonInheritedData->m_mask
|| m_rareNonInheritedData->m_maskBoxImage != other.m_rareNonInheritedData->m_maskBoxImage)
return true;
if (!RuntimeEnabledFeatures::cssBoxReflectFilterEnabled() && !m_rareNonInheritedData->reflectionDataEquivalent(*other.m_rareNonInheritedData.get()))
return true;
}
return false;
}
bool ComputedStyle::diffNeedsPaintInvalidationObject(const ComputedStyle& other) const
{
if (!m_background->outline().visuallyEqual(other.m_background->outline()))
return true;
if (m_inheritedData.m_visibility != other.m_inheritedData.m_visibility
|| m_inheritedData.m_printColorAdjust != other.m_inheritedData.m_printColorAdjust
|| m_inheritedData.m_insideLink != other.m_inheritedData.m_insideLink
|| !m_surround->border.visuallyEqual(other.m_surround->border)
|| !m_background->visuallyEqual(*other.m_background))
return true;
if (m_rareInheritedData.get() != other.m_rareInheritedData.get()) {
if (m_rareInheritedData->userModify != other.m_rareInheritedData->userModify
|| m_rareInheritedData->userSelect != other.m_rareInheritedData->userSelect
|| m_rareInheritedData->m_imageRendering != other.m_rareInheritedData->m_imageRendering)
return true;
}
if (m_rareNonInheritedData.get() != other.m_rareNonInheritedData.get()) {
if (m_rareNonInheritedData->userDrag != other.m_rareNonInheritedData->userDrag
|| m_rareNonInheritedData->m_objectFit != other.m_rareNonInheritedData->m_objectFit
|| m_rareNonInheritedData->m_objectPosition != other.m_rareNonInheritedData->m_objectPosition
|| !m_rareNonInheritedData->shadowDataEquivalent(*other.m_rareNonInheritedData.get())
|| !m_rareNonInheritedData->shapeOutsideDataEquivalent(*other.m_rareNonInheritedData.get())
|| !m_rareNonInheritedData->clipPathDataEquivalent(*other.m_rareNonInheritedData.get())
|| (visitedLinkBorderLeftColor() != other.visitedLinkBorderLeftColor() && borderLeftWidth())
|| (visitedLinkBorderRightColor() != other.visitedLinkBorderRightColor() && borderRightWidth())
|| (visitedLinkBorderBottomColor() != other.visitedLinkBorderBottomColor() && borderBottomWidth())
|| (visitedLinkBorderTopColor() != other.visitedLinkBorderTopColor() && borderTopWidth())
|| (visitedLinkOutlineColor() != other.visitedLinkOutlineColor() && outlineWidth())
|| (visitedLinkBackgroundColor() != other.visitedLinkBackgroundColor()))
return true;
}
if (resize() != other.resize())
return true;
if (m_rareNonInheritedData->m_paintImages) {
for (const auto& image : *m_rareNonInheritedData->m_paintImages) {
if (diffNeedsPaintInvalidationObjectForPaintImage(image, other))
return true;
}
}
return false;
}
bool ComputedStyle::diffNeedsPaintInvalidationObjectForPaintImage(const StyleImage* image, const ComputedStyle& other) const
{
CSSPaintValue* value = toCSSPaintValue(image->cssValue());
// NOTE: If the invalidation properties vectors are null, we are invalid as
// we haven't yet been painted (and can't provide the invalidation
// properties yet).
if (!value->nativeInvalidationProperties() || !value->customInvalidationProperties())
return true;
for (CSSPropertyID propertyID : *value->nativeInvalidationProperties()) {
// TODO(ikilpatrick): remove isInterpolableProperty check once
// CSSPropertyEquality::propertiesEqual correctly handles all properties.
if (!CSSPropertyMetadata::isInterpolableProperty(propertyID) || !CSSPropertyEquality::propertiesEqual(propertyID, *this, other))
return true;
}
if (variables() || other.variables()) {
for (const AtomicString& property : *value->customInvalidationProperties()) {
CSSVariableData* thisVar = variables() ? variables()->getVariable(property) : nullptr;
CSSVariableData* otherVar = other.variables() ? other.variables()->getVariable(property) : nullptr;
if (!dataEquivalent(thisVar, otherVar))
return true;
}
}
return false;
}
void ComputedStyle::updatePropertySpecificDifferences(const ComputedStyle& other, StyleDifference& diff) const
{
if (m_box->zIndex() != other.m_box->zIndex() || isStackingContext() != other.isStackingContext())
diff.setZIndexChanged();
if (m_rareNonInheritedData.get() != other.m_rareNonInheritedData.get()) {
if (!transformDataEquivalent(other))
diff.setTransformChanged();
if (m_rareNonInheritedData->opacity != other.m_rareNonInheritedData->opacity)
diff.setOpacityChanged();
if (m_rareNonInheritedData->m_filter != other.m_rareNonInheritedData->m_filter)
diff.setFilterChanged();
if (!m_rareNonInheritedData->shadowDataEquivalent(*other.m_rareNonInheritedData.get()))
diff.setNeedsRecomputeOverflow();
if (m_rareNonInheritedData->m_backdropFilter != other.m_rareNonInheritedData->m_backdropFilter)
diff.setBackdropFilterChanged();
if (RuntimeEnabledFeatures::cssBoxReflectFilterEnabled() && !m_rareNonInheritedData->reflectionDataEquivalent(*other.m_rareNonInheritedData.get()))
diff.setFilterChanged();
}
if (!m_background->outline().visuallyEqual(other.m_background->outline()) || !m_surround->border.visualOverflowEqual(other.m_surround->border))
diff.setNeedsRecomputeOverflow();
if (!diff.needsPaintInvalidation()) {
if (m_styleInheritedData->color != other.m_styleInheritedData->color
|| m_styleInheritedData->visitedLinkColor != other.m_styleInheritedData->visitedLinkColor
|| m_inheritedData.m_textUnderline != other.m_inheritedData.m_textUnderline
|| m_visual->textDecoration != other.m_visual->textDecoration) {
diff.setTextDecorationOrColorChanged();
} else if (m_rareNonInheritedData.get() != other.m_rareNonInheritedData.get()
&& (m_rareNonInheritedData->m_textDecorationStyle != other.m_rareNonInheritedData->m_textDecorationStyle
|| m_rareNonInheritedData->m_textDecorationColor != other.m_rareNonInheritedData->m_textDecorationColor
|| m_rareNonInheritedData->m_visitedLinkTextDecorationColor != other.m_rareNonInheritedData->m_visitedLinkTextDecorationColor)) {
diff.setTextDecorationOrColorChanged();
} else if (m_rareInheritedData.get() != other.m_rareInheritedData.get()
&& (m_rareInheritedData->textFillColor() != other.m_rareInheritedData->textFillColor()
|| m_rareInheritedData->textStrokeColor() != other.m_rareInheritedData->textStrokeColor()
|| m_rareInheritedData->textEmphasisColor() != other.m_rareInheritedData->textEmphasisColor()
|| m_rareInheritedData->visitedLinkTextFillColor() != other.m_rareInheritedData->visitedLinkTextFillColor()
|| m_rareInheritedData->visitedLinkTextStrokeColor() != other.m_rareInheritedData->visitedLinkTextStrokeColor()
|| m_rareInheritedData->visitedLinkTextEmphasisColor() != other.m_rareInheritedData->visitedLinkTextEmphasisColor()
|| m_rareInheritedData->textEmphasisFill != other.m_rareInheritedData->textEmphasisFill
|| m_rareInheritedData->appliedTextDecorations != other.m_rareInheritedData->appliedTextDecorations)) {
diff.setTextDecorationOrColorChanged();
}
}
}
void ComputedStyle::addPaintImage(StyleImage* image)
{
if (!m_rareNonInheritedData.access()->m_paintImages)
m_rareNonInheritedData.access()->m_paintImages = WTF::wrapUnique(new Vector<Persistent<StyleImage>>());
m_rareNonInheritedData.access()->m_paintImages->append(image);
}
void ComputedStyle::addCursor(StyleImage* image, bool hotSpotSpecified, const IntPoint& hotSpot)
{
if (!m_rareInheritedData.access()->cursorData)
m_rareInheritedData.access()->cursorData = new CursorList;
m_rareInheritedData.access()->cursorData->append(CursorData(image, hotSpotSpecified, hotSpot));
}
void ComputedStyle::setCursorList(CursorList* other)
{
m_rareInheritedData.access()->cursorData = other;
}
void ComputedStyle::setQuotes(PassRefPtr<QuotesData> q)
{
m_rareInheritedData.access()->quotes = q;
}
void ComputedStyle::clearCursorList()
{
if (m_rareInheritedData->cursorData)
m_rareInheritedData.access()->cursorData = nullptr;
}
static bool hasPropertyThatCreatesStackingContext(const Vector<CSSPropertyID>& properties)
{
for (CSSPropertyID property : properties) {
switch (property) {
case CSSPropertyOpacity:
case CSSPropertyTransform:
case CSSPropertyAliasWebkitTransform:
case CSSPropertyTransformStyle:
case CSSPropertyAliasWebkitTransformStyle:
case CSSPropertyPerspective:
case CSSPropertyAliasWebkitPerspective:
case CSSPropertyWebkitMask:
case CSSPropertyWebkitMaskBoxImage:
case CSSPropertyWebkitClipPath:
case CSSPropertyWebkitBoxReflect:
case CSSPropertyFilter:
case CSSPropertyAliasWebkitFilter:
case CSSPropertyBackdropFilter:
case CSSPropertyZIndex:
case CSSPropertyPosition:
case CSSPropertyMixBlendMode:
case CSSPropertyIsolation:
return true;
default:
break;
}
}
return false;
}
void ComputedStyle::updateIsStackingContext(bool isDocumentElement, bool isInTopLayer)
{
if (isStackingContext())
return;
if (isDocumentElement
|| isInTopLayer
|| styleType() == PseudoIdBackdrop
|| hasOpacity()
|| hasTransformRelatedProperty()
|| hasMask()
|| clipPath()
|| boxReflect()
|| hasFilterInducingProperty()
|| hasBlendMode()
|| hasIsolation()
|| hasViewportConstrainedPosition()
|| hasPropertyThatCreatesStackingContext(willChangeProperties())
|| containsPaint()) {
setIsStackingContext(true);
}
}
void ComputedStyle::addCallbackSelector(const String& selector)
{
if (!m_rareNonInheritedData->m_callbackSelectors.contains(selector))
m_rareNonInheritedData.access()->m_callbackSelectors.append(selector);
}
void ComputedStyle::setContent(ContentData* contentData)
{
SET_VAR(m_rareNonInheritedData, m_content, contentData);
}
bool ComputedStyle::hasWillChangeCompositingHint() const
{
for (size_t i = 0; i < m_rareNonInheritedData->m_willChange->m_properties.size(); ++i) {
switch (m_rareNonInheritedData->m_willChange->m_properties[i]) {
case CSSPropertyOpacity:
case CSSPropertyTransform:
case CSSPropertyAliasWebkitTransform:
case CSSPropertyTop:
case CSSPropertyLeft:
case CSSPropertyBottom:
case CSSPropertyRight:
return true;
default:
break;
}
}
return false;
}
bool ComputedStyle::hasWillChangeTransformHint() const
{
for (const auto& property: m_rareNonInheritedData->m_willChange->m_properties) {
switch (property) {
case CSSPropertyTransform:
case CSSPropertyAliasWebkitTransform:
return true;
default:
break;
}
}
return false;
}
bool ComputedStyle::requireTransformOrigin(ApplyTransformOrigin applyOrigin, ApplyMotionPath applyMotionPath) const
{
const Vector<RefPtr<TransformOperation>>& transformOperations = transform().operations();
// transform-origin brackets the transform with translate operations.
// Optimize for the case where the only transform is a translation, since the transform-origin is irrelevant
// in that case.
if (applyOrigin != IncludeTransformOrigin)
return false;
if (applyMotionPath == IncludeMotionPath)
return true;
unsigned size = transformOperations.size();
for (unsigned i = 0; i < size; ++i) {
TransformOperation::OperationType type = transformOperations[i]->type();
if (type != TransformOperation::TranslateX
&& type != TransformOperation::TranslateY
&& type != TransformOperation::Translate
&& type != TransformOperation::TranslateZ
&& type != TransformOperation::Translate3D)
return true;
}
return scale() || rotate();
}
void ComputedStyle::applyTransform(TransformationMatrix& result, const LayoutSize& borderBoxSize, ApplyTransformOrigin applyOrigin, ApplyMotionPath applyMotionPath, ApplyIndependentTransformProperties applyIndependentTransformProperties) const
{
applyTransform(result, FloatRect(FloatPoint(), FloatSize(borderBoxSize)), applyOrigin, applyMotionPath, applyIndependentTransformProperties);
}
void ComputedStyle::applyTransform(TransformationMatrix& result, const FloatRect& boundingBox, ApplyTransformOrigin applyOrigin, ApplyMotionPath applyMotionPath, ApplyIndependentTransformProperties applyIndependentTransformProperties) const
{
if (!hasMotionPath())
applyMotionPath = ExcludeMotionPath;
bool applyTransformOrigin = requireTransformOrigin(applyOrigin, applyMotionPath);
float offsetX = transformOriginX().type() == Percent ? boundingBox.x() : 0;
float offsetY = transformOriginY().type() == Percent ? boundingBox.y() : 0;
float originX = 0;
float originY = 0;
float originZ = 0;
if (applyTransformOrigin) {
originX = floatValueForLength(transformOriginX(), boundingBox.width()) + offsetX;
originY = floatValueForLength(transformOriginY(), boundingBox.height()) + offsetY;
originZ = transformOriginZ();
result.translate3d(originX, originY, originZ);
}
if (applyIndependentTransformProperties == IncludeIndependentTransformProperties) {
if (translate())
translate()->apply(result, boundingBox.size());
if (rotate())
rotate()->apply(result, boundingBox.size());
if (scale())
scale()->apply(result, boundingBox.size());
}
if (applyMotionPath == ComputedStyle::IncludeMotionPath)
applyMotionPathTransform(originX, originY, result);
const Vector<RefPtr<TransformOperation>>& transformOperations = transform().operations();
unsigned size = transformOperations.size();
for (unsigned i = 0; i < size; ++i)
transformOperations[i]->apply(result, boundingBox.size());
if (applyTransformOrigin) {
result.translate3d(-originX, -originY, -originZ);
}
}
void ComputedStyle::applyMotionPathTransform(float originX, float originY, TransformationMatrix& transform) const
{
const StyleMotionData& motionData = m_rareNonInheritedData->m_transform->m_motion;
ASSERT(motionData.m_path);
const StylePath& motionPath = *motionData.m_path;
float pathLength = motionPath.length();
float distance = floatValueForLength(motionData.m_offset, pathLength);
float computedDistance;
if (motionPath.isClosed() && pathLength > 0) {
computedDistance = fmod(distance, pathLength);
if (computedDistance < 0)
computedDistance += pathLength;
} else {
computedDistance = clampTo<float>(distance, 0, pathLength);
}
FloatPoint point;
float angle;
motionPath.path().pointAndNormalAtLength(computedDistance, point, angle);
if (motionData.m_rotation.type == MotionRotationFixed)
angle = 0;
transform.translate(point.x() - originX, point.y() - originY);
transform.rotate(angle + motionData.m_rotation.angle);
}
void ComputedStyle::setTextShadow(PassRefPtr<ShadowList> s)
{
m_rareInheritedData.access()->textShadow = s;
}
void ComputedStyle::setBoxShadow(PassRefPtr<ShadowList> s)
{
m_rareNonInheritedData.access()->m_boxShadow = s;
}
static FloatRoundedRect::Radii calcRadiiFor(const BorderData& border, LayoutSize size)
{
return FloatRoundedRect::Radii(
FloatSize(floatValueForLength(border.topLeft().width(), size.width().toFloat()),
floatValueForLength(border.topLeft().height(), size.height().toFloat())),
FloatSize(floatValueForLength(border.topRight().width(), size.width().toFloat()),
floatValueForLength(border.topRight().height(), size.height().toFloat())),
FloatSize(floatValueForLength(border.bottomLeft().width(), size.width().toFloat()),
floatValueForLength(border.bottomLeft().height(), size.height().toFloat())),
FloatSize(floatValueForLength(border.bottomRight().width(), size.width().toFloat()),
floatValueForLength(border.bottomRight().height(), size.height().toFloat())));
}
StyleImage* ComputedStyle::listStyleImage() const { return m_rareInheritedData->listStyleImage.get(); }
void ComputedStyle::setListStyleImage(StyleImage* v)
{
if (m_rareInheritedData->listStyleImage != v)
m_rareInheritedData.access()->listStyleImage = v;
}
Color ComputedStyle::color() const { return m_styleInheritedData->color; }
Color ComputedStyle::visitedLinkColor() const { return m_styleInheritedData->visitedLinkColor; }
void ComputedStyle::setColor(const Color& v) { SET_VAR(m_styleInheritedData, color, v); }
void ComputedStyle::setVisitedLinkColor(const Color& v) { SET_VAR(m_styleInheritedData, visitedLinkColor, v); }
short ComputedStyle::horizontalBorderSpacing() const { return m_styleInheritedData->horizontal_border_spacing; }
short ComputedStyle::verticalBorderSpacing() const { return m_styleInheritedData->vertical_border_spacing; }
void ComputedStyle::setHorizontalBorderSpacing(short v) { SET_VAR(m_styleInheritedData, horizontal_border_spacing, v); }
void ComputedStyle::setVerticalBorderSpacing(short v) { SET_VAR(m_styleInheritedData, vertical_border_spacing, v); }
FloatRoundedRect ComputedStyle::getRoundedBorderFor(const LayoutRect& borderRect,
bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
{
FloatRoundedRect roundedRect(pixelSnappedIntRect(borderRect));
if (hasBorderRadius()) {
FloatRoundedRect::Radii radii = calcRadiiFor(m_surround->border, borderRect.size());
roundedRect.includeLogicalEdges(radii, isHorizontalWritingMode(), includeLogicalLeftEdge, includeLogicalRightEdge);
roundedRect.constrainRadii();
}
return roundedRect;
}
FloatRoundedRect ComputedStyle::getRoundedInnerBorderFor(const LayoutRect& borderRect, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
{
bool horizontal = isHorizontalWritingMode();
int leftWidth = (!horizontal || includeLogicalLeftEdge) ? borderLeftWidth() : 0;
int rightWidth = (!horizontal || includeLogicalRightEdge) ? borderRightWidth() : 0;
int topWidth = (horizontal || includeLogicalLeftEdge) ? borderTopWidth() : 0;
int bottomWidth = (horizontal || includeLogicalRightEdge) ? borderBottomWidth() : 0;
return getRoundedInnerBorderFor(borderRect,
LayoutRectOutsets(-topWidth, -rightWidth, -bottomWidth, -leftWidth),
includeLogicalLeftEdge, includeLogicalRightEdge);
}
FloatRoundedRect ComputedStyle::getRoundedInnerBorderFor(const LayoutRect& borderRect,
const LayoutRectOutsets insets, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
{
LayoutRect innerRect(borderRect);
innerRect.expand(insets);
FloatRoundedRect roundedRect(pixelSnappedIntRect(innerRect));
if (hasBorderRadius()) {
FloatRoundedRect::Radii radii = getRoundedBorderFor(borderRect).getRadii();
// Insets use negative values.
radii.shrink(
-insets.top().toFloat(),
-insets.bottom().toFloat(),
-insets.left().toFloat(),
-insets.right().toFloat());
roundedRect.includeLogicalEdges(radii, isHorizontalWritingMode(), includeLogicalLeftEdge, includeLogicalRightEdge);
}
return roundedRect;
}
static bool allLayersAreFixed(const FillLayer& layer)
{
for (const FillLayer* currLayer = &layer; currLayer; currLayer = currLayer->next()) {
if (!currLayer->image() || currLayer->attachment() != FixedBackgroundAttachment)
return false;
}
return true;
}
bool ComputedStyle::hasEntirelyFixedBackground() const
{
return allLayersAreFixed(backgroundLayers());
}
bool ComputedStyle::hasEntirelyLocalBackground() const
{
const FillLayer* layer = &backgroundLayers();
for (; layer; layer = layer->next()) {
if (layer->attachment() == LocalBackgroundAttachment)
continue;
// Solid color layers with a background clip of the padding box can be treated
// as local.
// TODO(flackr): We can handle other fill boxes with solid colors as long as they
// are essentially the same (i.e. PaddingFillBox == ContentFillBox when padding = 0).
if (!layer->image() && !layer->next() && layer->clip() == PaddingFillBox)
continue;
return false;
}
return true;
}
const CounterDirectiveMap* ComputedStyle::counterDirectives() const
{
return m_rareNonInheritedData->m_counterDirectives.get();
}
CounterDirectiveMap& ComputedStyle::accessCounterDirectives()
{
std::unique_ptr<CounterDirectiveMap>& map = m_rareNonInheritedData.access()->m_counterDirectives;
if (!map)
map = wrapUnique(new CounterDirectiveMap);
return *map;
}
const CounterDirectives ComputedStyle::getCounterDirectives(const AtomicString& identifier) const
{
if (const CounterDirectiveMap* directives = counterDirectives())
return directives->get(identifier);
return CounterDirectives();
}
void ComputedStyle::clearIncrementDirectives()
{
if (!counterDirectives())
return;
// This makes us copy even if we may not be removing any items.
CounterDirectiveMap& map = accessCounterDirectives();
typedef CounterDirectiveMap::iterator Iterator;
Iterator end = map.end();
for (Iterator it = map.begin(); it != end; ++it)
it->value.clearIncrement();
}
void ComputedStyle::clearResetDirectives()
{
if (!counterDirectives())
return;
// This makes us copy even if we may not be removing any items.
CounterDirectiveMap& map = accessCounterDirectives();
typedef CounterDirectiveMap::iterator Iterator;
Iterator end = map.end();
for (Iterator it = map.begin(); it != end; ++it)
it->value.clearReset();
}
Hyphenation* ComputedStyle::getHyphenation() const
{
return getHyphens() == HyphensAuto
? getFontDescription().localeOrDefault().getHyphenation() : nullptr;
}
const AtomicString& ComputedStyle::hyphenString() const
{
const AtomicString& hyphenationString = m_rareInheritedData.get()->hyphenationString;
if (!hyphenationString.isNull())
return hyphenationString;
// FIXME: This should depend on locale.
DEFINE_STATIC_LOCAL(AtomicString, hyphenMinusString, (&hyphenMinusCharacter, 1));
DEFINE_STATIC_LOCAL(AtomicString, hyphenString, (&hyphenCharacter, 1));
const SimpleFontData* primaryFont = font().primaryFont();
ASSERT(primaryFont);
return primaryFont->glyphForCharacter(hyphenCharacter) ? hyphenString : hyphenMinusString;
}
const AtomicString& ComputedStyle::textEmphasisMarkString() const
{
switch (getTextEmphasisMark()) {
case TextEmphasisMarkNone:
return nullAtom;
case TextEmphasisMarkCustom:
return textEmphasisCustomMark();
case TextEmphasisMarkDot: {
DEFINE_STATIC_LOCAL(AtomicString, filledDotString, (&bulletCharacter, 1));
DEFINE_STATIC_LOCAL(AtomicString, openDotString, (&whiteBulletCharacter, 1));
return getTextEmphasisFill() == TextEmphasisFillFilled ? filledDotString : openDotString;
}
case TextEmphasisMarkCircle: {
DEFINE_STATIC_LOCAL(AtomicString, filledCircleString, (&blackCircleCharacter, 1));
DEFINE_STATIC_LOCAL(AtomicString, openCircleString, (&whiteCircleCharacter, 1));
return getTextEmphasisFill() == TextEmphasisFillFilled ? filledCircleString : openCircleString;
}
case TextEmphasisMarkDoubleCircle: {
DEFINE_STATIC_LOCAL(AtomicString, filledDoubleCircleString, (&fisheyeCharacter, 1));
DEFINE_STATIC_LOCAL(AtomicString, openDoubleCircleString, (&bullseyeCharacter, 1));
return getTextEmphasisFill() == TextEmphasisFillFilled ? filledDoubleCircleString : openDoubleCircleString;
}
case TextEmphasisMarkTriangle: {
DEFINE_STATIC_LOCAL(AtomicString, filledTriangleString, (&blackUpPointingTriangleCharacter, 1));
DEFINE_STATIC_LOCAL(AtomicString, openTriangleString, (&whiteUpPointingTriangleCharacter, 1));
return getTextEmphasisFill() == TextEmphasisFillFilled ? filledTriangleString : openTriangleString;
}
case TextEmphasisMarkSesame: {
DEFINE_STATIC_LOCAL(AtomicString, filledSesameString, (&sesameDotCharacter, 1));
DEFINE_STATIC_LOCAL(AtomicString, openSesameString, (&whiteSesameDotCharacter, 1));
return getTextEmphasisFill() == TextEmphasisFillFilled ? filledSesameString : openSesameString;
}
case TextEmphasisMarkAuto:
ASSERT_NOT_REACHED();
return nullAtom;
}
ASSERT_NOT_REACHED();
return nullAtom;
}
CSSAnimationData& ComputedStyle::accessAnimations()
{
if (!m_rareNonInheritedData.access()->m_animations)
m_rareNonInheritedData.access()->m_animations = CSSAnimationData::create();
return *m_rareNonInheritedData->m_animations;
}
CSSTransitionData& ComputedStyle::accessTransitions()
{
if (!m_rareNonInheritedData.access()->m_transitions)
m_rareNonInheritedData.access()->m_transitions = CSSTransitionData::create();
return *m_rareNonInheritedData->m_transitions;
}
const Font& ComputedStyle::font() const { return m_styleInheritedData->font; }
const FontMetrics& ComputedStyle::getFontMetrics() const { return m_styleInheritedData->font.getFontMetrics(); }
const FontDescription& ComputedStyle::getFontDescription() const { return m_styleInheritedData->font.getFontDescription(); }
float ComputedStyle::specifiedFontSize() const { return getFontDescription().specifiedSize(); }
float ComputedStyle::computedFontSize() const { return getFontDescription().computedSize(); }
int ComputedStyle::fontSize() const { return getFontDescription().computedPixelSize(); }
float ComputedStyle::fontSizeAdjust() const { return getFontDescription().sizeAdjust(); }
bool ComputedStyle::hasFontSizeAdjust() const { return getFontDescription().hasSizeAdjust(); }
FontWeight ComputedStyle::fontWeight() const { return getFontDescription().weight(); }
FontStretch ComputedStyle::fontStretch() const { return getFontDescription().stretch(); }
TextDecoration ComputedStyle::textDecorationsInEffect() const
{
int decorations = 0;
const Vector<AppliedTextDecoration>& applied = appliedTextDecorations();
for (size_t i = 0; i < applied.size(); ++i)
decorations |= applied[i].line();
return static_cast<TextDecoration>(decorations);
}
const Vector<AppliedTextDecoration>& ComputedStyle::appliedTextDecorations() const
{
if (!m_inheritedData.m_textUnderline && !m_rareInheritedData->appliedTextDecorations) {
DEFINE_STATIC_LOCAL(Vector<AppliedTextDecoration>, empty, ());
return empty;
}
if (m_inheritedData.m_textUnderline) {
DEFINE_STATIC_LOCAL(Vector<AppliedTextDecoration>, underline, (1, AppliedTextDecoration(TextDecorationUnderline)));
return underline;
}
return m_rareInheritedData->appliedTextDecorations->vector();
}
StyleVariableData* ComputedStyle::variables() const
{
return m_rareInheritedData->variables.get();
}
void ComputedStyle::setVariable(const AtomicString& name, PassRefPtr<CSSVariableData> value)
{
RefPtr<StyleVariableData>& variables = m_rareInheritedData.access()->variables;
if (!variables)
variables = StyleVariableData::create();
else if (!variables->hasOneRef())
variables = variables->copy();
variables->setVariable(name, std::move(value));
}
void ComputedStyle::setRegisteredInheritedProperty(const AtomicString& name, const CSSValue* parsedValue)
{
RefPtr<StyleVariableData>& variables = m_rareInheritedData.access()->variables;
// The CSSVariableData needs to be set before calling this function
DCHECK(variables);
DCHECK(!!parsedValue == !!variables->getVariable(name));
DCHECK(!(variables->getVariable(name) && variables->getVariable(name)->needsVariableResolution()));
if (!variables->hasOneRef())
variables = variables->copy();
variables->setRegisteredInheritedProperty(name, parsedValue);
}
void ComputedStyle::removeVariable(const AtomicString& name)
{
RefPtr<StyleVariableData>& variables = m_rareInheritedData.access()->variables;
if (!variables)
return;
if (!variables->hasOneRef())
variables = variables->copy();
variables->removeVariable(name);
}
float ComputedStyle::wordSpacing() const { return getFontDescription().wordSpacing(); }
float ComputedStyle::letterSpacing() const { return getFontDescription().letterSpacing(); }
bool ComputedStyle::setFontDescription(const FontDescription& v)
{
if (m_styleInheritedData->font.getFontDescription() != v) {
m_styleInheritedData.access()->font = Font(v);
return true;
}
return false;
}
void ComputedStyle::setFont(const Font& font)
{
m_styleInheritedData.access()->font = font;
}
const Length& ComputedStyle::specifiedLineHeight() const { return m_styleInheritedData->line_height; }
Length ComputedStyle::lineHeight() const
{
const Length& lh = m_styleInheritedData->line_height;
// Unlike getFontDescription().computedSize() and hence fontSize(), this is
// recalculated on demand as we only store the specified line height.
// FIXME: Should consider scaling the fixed part of any calc expressions
// too, though this involves messily poking into CalcExpressionLength.
if (lh.isFixed()) {
float multiplier = textAutosizingMultiplier();
return Length(TextAutosizer::computeAutosizedFontSize(lh.value(), multiplier), Fixed);
}
return lh;
}
void ComputedStyle::setLineHeight(const Length& specifiedLineHeight) { SET_VAR(m_styleInheritedData, line_height, specifiedLineHeight); }
int ComputedStyle::computedLineHeight() const
{
const Length& lh = lineHeight();
// Negative value means the line height is not set. Use the font's built-in
// spacing, if avalible.
if (lh.isNegative() && font().primaryFont())
return getFontMetrics().lineSpacing();
if (lh.isPercentOrCalc())
return minimumValueForLength(lh, LayoutUnit(computedFontSize())).toInt();
return std::min(lh.value(), LayoutUnit::max().toFloat());
}
void ComputedStyle::setWordSpacing(float wordSpacing)
{
FontSelector* currentFontSelector = font().getFontSelector();
FontDescription desc(getFontDescription());
desc.setWordSpacing(wordSpacing);
setFontDescription(desc);
font().update(currentFontSelector);
}
void ComputedStyle::setLetterSpacing(float letterSpacing)
{
FontSelector* currentFontSelector = font().getFontSelector();
FontDescription desc(getFontDescription());
desc.setLetterSpacing(letterSpacing);
setFontDescription(desc);
font().update(currentFontSelector);
}
void ComputedStyle::setTextAutosizingMultiplier(float multiplier)
{
SET_VAR(m_styleInheritedData, textAutosizingMultiplier, multiplier);
float size = specifiedFontSize();
ASSERT(std::isfinite(size));
if (!std::isfinite(size) || size < 0)
size = 0;
else
size = std::min(maximumAllowedFontSize, size);
FontSelector* currentFontSelector = font().getFontSelector();
FontDescription desc(getFontDescription());
desc.setSpecifiedSize(size);
desc.setComputedSize(size);
float autosizedFontSize = TextAutosizer::computeAutosizedFontSize(size, multiplier);
desc.setComputedSize(std::min(maximumAllowedFontSize, autosizedFontSize));
setFontDescription(desc);
font().update(currentFontSelector);
}
void ComputedStyle::addAppliedTextDecoration(const AppliedTextDecoration& decoration)
{
RefPtr<AppliedTextDecorationList>& list = m_rareInheritedData.access()->appliedTextDecorations;
if (!list)
list = AppliedTextDecorationList::create();
else if (!list->hasOneRef())
list = list->copy();
if (m_inheritedData.m_textUnderline) {
m_inheritedData.m_textUnderline = false;
list->append(AppliedTextDecoration(TextDecorationUnderline));
}
list->append(decoration);
}
void ComputedStyle::applyTextDecorations()
{
if (getTextDecoration() == TextDecorationNone)
return;
TextDecorationStyle style = getTextDecorationStyle();
StyleColor styleColor = decorationColorIncludingFallback(insideLink() == InsideVisitedLink);
int decorations = getTextDecoration();
if (decorations & TextDecorationUnderline) {
// To save memory, we don't use AppliedTextDecoration objects in the
// common case of a single simple underline.
AppliedTextDecoration underline(TextDecorationUnderline, style, styleColor);
if (!m_rareInheritedData->appliedTextDecorations && underline.isSimpleUnderline())
m_inheritedData.m_textUnderline = true;
else
addAppliedTextDecoration(underline);
}
if (decorations & TextDecorationOverline)
addAppliedTextDecoration(AppliedTextDecoration(TextDecorationOverline, style, styleColor));
if (decorations & TextDecorationLineThrough)
addAppliedTextDecoration(AppliedTextDecoration(TextDecorationLineThrough, style, styleColor));
}
void ComputedStyle::clearAppliedTextDecorations()
{
m_inheritedData.m_textUnderline = false;
if (m_rareInheritedData->appliedTextDecorations)
m_rareInheritedData.access()->appliedTextDecorations = nullptr;
}
void ComputedStyle::restoreParentTextDecorations(const ComputedStyle& parentStyle)
{
m_inheritedData.m_textUnderline = parentStyle.m_inheritedData.m_textUnderline;
if (m_rareInheritedData->appliedTextDecorations != parentStyle.m_rareInheritedData->appliedTextDecorations)
m_rareInheritedData.access()->appliedTextDecorations = parentStyle.m_rareInheritedData->appliedTextDecorations;
}
void ComputedStyle::clearMultiCol()
{
m_rareNonInheritedData.access()->m_multiCol = nullptr;
m_rareNonInheritedData.access()->m_multiCol.init();
}
StyleColor ComputedStyle::decorationColorIncludingFallback(bool visitedLink) const
{
StyleColor styleColor = visitedLink ? visitedLinkTextDecorationColor() : textDecorationColor();
if (!styleColor.isCurrentColor())
return styleColor;
if (textStrokeWidth()) {
// Prefer stroke color if possible, but not if it's fully transparent.
StyleColor textStrokeStyleColor = visitedLink ? visitedLinkTextStrokeColor() : textStrokeColor();
if (!textStrokeStyleColor.isCurrentColor() && textStrokeStyleColor.getColor().alpha())
return textStrokeStyleColor;
}
return visitedLink ? visitedLinkTextFillColor() : textFillColor();
}
Color ComputedStyle::colorIncludingFallback(int colorProperty, bool visitedLink) const
{
StyleColor result(StyleColor::currentColor());
EBorderStyle borderStyle = BorderStyleNone;
switch (colorProperty) {
case CSSPropertyBackgroundColor:
result = visitedLink ? visitedLinkBackgroundColor() : backgroundColor();
break;
case CSSPropertyBorderLeftColor:
result = visitedLink ? visitedLinkBorderLeftColor() : borderLeftColor();
borderStyle = borderLeftStyle();
break;
case CSSPropertyBorderRightColor:
result = visitedLink ? visitedLinkBorderRightColor() : borderRightColor();
borderStyle = borderRightStyle();
break;
case CSSPropertyBorderTopColor:
result = visitedLink ? visitedLinkBorderTopColor() : borderTopColor();
borderStyle = borderTopStyle();
break;
case CSSPropertyBorderBottomColor:
result = visitedLink ? visitedLinkBorderBottomColor() : borderBottomColor();
borderStyle = borderBottomStyle();
break;
case CSSPropertyColor:
result = visitedLink ? visitedLinkColor() : color();
break;
case CSSPropertyOutlineColor:
result = visitedLink ? visitedLinkOutlineColor() : outlineColor();
break;
case CSSPropertyColumnRuleColor:
result = visitedLink ? visitedLinkColumnRuleColor() : columnRuleColor();
break;
case CSSPropertyWebkitTextEmphasisColor:
result = visitedLink ? visitedLinkTextEmphasisColor() : textEmphasisColor();
break;
case CSSPropertyWebkitTextFillColor:
result = visitedLink ? visitedLinkTextFillColor() : textFillColor();
break;
case CSSPropertyWebkitTextStrokeColor:
result = visitedLink ? visitedLinkTextStrokeColor() : textStrokeColor();
break;
case CSSPropertyFloodColor:
result = floodColor();
break;
case CSSPropertyLightingColor:
result = lightingColor();
break;
case CSSPropertyStopColor:
result = stopColor();
break;
case CSSPropertyWebkitTapHighlightColor:
result = tapHighlightColor();
break;
case CSSPropertyTextDecorationColor:
result = decorationColorIncludingFallback(visitedLink);
break;
default:
ASSERT_NOT_REACHED();
break;
}
if (!result.isCurrentColor())
return result.getColor();
// FIXME: Treating styled borders with initial color differently causes problems
// See crbug.com/316559, crbug.com/276231
if (!visitedLink && (borderStyle == BorderStyleInset || borderStyle == BorderStyleOutset || borderStyle == BorderStyleRidge || borderStyle == BorderStyleGroove))
return Color(238, 238, 238);
return visitedLink ? visitedLinkColor() : color();
}
Color ComputedStyle::visitedDependentColor(int colorProperty) const
{
Color unvisitedColor = colorIncludingFallback(colorProperty, false);
if (insideLink() != InsideVisitedLink)
return unvisitedColor;
Color visitedColor = colorIncludingFallback(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::transparent)
return unvisitedColor;
// Take the alpha from the unvisited color, but get the RGB values from the visited color.
return Color(visitedColor.red(), visitedColor.green(), visitedColor.blue(), unvisitedColor.alpha());
}
const BorderValue& ComputedStyle::borderBefore() const
{
switch (getWritingMode()) {
case TopToBottomWritingMode:
return borderTop();
case LeftToRightWritingMode:
return borderLeft();
case RightToLeftWritingMode:
return borderRight();
}
ASSERT_NOT_REACHED();
return borderTop();
}
const BorderValue& ComputedStyle::borderAfter() const
{
switch (getWritingMode()) {
case TopToBottomWritingMode:
return borderBottom();
case LeftToRightWritingMode:
return borderRight();
case RightToLeftWritingMode:
return borderLeft();
}
ASSERT_NOT_REACHED();
return borderBottom();
}
const BorderValue& ComputedStyle::borderStart() const
{
if (isHorizontalWritingMode())
return isLeftToRightDirection() ? borderLeft() : borderRight();
return isLeftToRightDirection() ? borderTop() : borderBottom();
}
const BorderValue& ComputedStyle::borderEnd() const
{
if (isHorizontalWritingMode())
return isLeftToRightDirection() ? borderRight() : borderLeft();
return isLeftToRightDirection() ? borderBottom() : borderTop();
}
int ComputedStyle::borderBeforeWidth() const
{
switch (getWritingMode()) {
case TopToBottomWritingMode:
return borderTopWidth();
case LeftToRightWritingMode:
return borderLeftWidth();
case RightToLeftWritingMode:
return borderRightWidth();
}
ASSERT_NOT_REACHED();
return borderTopWidth();
}
int ComputedStyle::borderAfterWidth() const
{
switch (getWritingMode()) {
case TopToBottomWritingMode:
return borderBottomWidth();
case LeftToRightWritingMode:
return borderRightWidth();
case RightToLeftWritingMode:
return borderLeftWidth();
}
ASSERT_NOT_REACHED();
return borderBottomWidth();
}
int ComputedStyle::borderStartWidth() const
{
if (isHorizontalWritingMode())
return isLeftToRightDirection() ? borderLeftWidth() : borderRightWidth();
return isLeftToRightDirection() ? borderTopWidth() : borderBottomWidth();
}
int ComputedStyle::borderEndWidth() const
{
if (isHorizontalWritingMode())
return isLeftToRightDirection() ? borderRightWidth() : borderLeftWidth();
return isLeftToRightDirection() ? borderBottomWidth() : borderTopWidth();
}
int ComputedStyle::borderOverWidth() const
{
return isHorizontalWritingMode() ? borderTopWidth() : borderRightWidth();
}
int ComputedStyle::borderUnderWidth() const
{
return isHorizontalWritingMode() ? borderBottomWidth() : borderLeftWidth();
}
void ComputedStyle::setMarginStart(const Length& margin)
{
if (isHorizontalWritingMode()) {
if (isLeftToRightDirection())
setMarginLeft(margin);
else
setMarginRight(margin);
} else {
if (isLeftToRightDirection())
setMarginTop(margin);
else
setMarginBottom(margin);
}
}
void ComputedStyle::setMarginEnd(const Length& margin)
{
if (isHorizontalWritingMode()) {
if (isLeftToRightDirection())
setMarginRight(margin);
else
setMarginLeft(margin);
} else {
if (isLeftToRightDirection())
setMarginBottom(margin);
else
setMarginTop(margin);
}
}
void ComputedStyle::setMotionPath(PassRefPtr<StylePath> path)
{
m_rareNonInheritedData.access()->m_transform.access()->m_motion.m_path = path;
}
int ComputedStyle::outlineOutsetExtent() const
{
if (!hasOutline())
return 0;
if (outlineStyleIsAuto())
return GraphicsContext::focusRingOutsetExtent(outlineOffset(), outlineWidth());
return std::max(0, saturatedAddition(outlineWidth(), outlineOffset()));
}
bool ComputedStyle::columnRuleEquivalent(const ComputedStyle* otherStyle) const
{
return columnRuleStyle() == otherStyle->columnRuleStyle()
&& columnRuleWidth() == otherStyle->columnRuleWidth()
&& visitedDependentColor(CSSPropertyColumnRuleColor) == otherStyle->visitedDependentColor(CSSPropertyColumnRuleColor);
}
TextEmphasisMark ComputedStyle::getTextEmphasisMark() const
{
TextEmphasisMark mark = static_cast<TextEmphasisMark>(m_rareInheritedData->textEmphasisMark);
if (mark != TextEmphasisMarkAuto)
return mark;
if (isHorizontalWritingMode())
return TextEmphasisMarkDot;
return TextEmphasisMarkSesame;
}
Color ComputedStyle::initialTapHighlightColor()
{
return LayoutTheme::tapHighlightColor();
}
const FilterOperations& ComputedStyle::initialFilter()
{
DEFINE_STATIC_LOCAL(FilterOperationsWrapper, ops, (FilterOperationsWrapper::create()));
return ops.operations();
}
const FilterOperations& ComputedStyle::initialBackdropFilter()
{
DEFINE_STATIC_LOCAL(FilterOperationsWrapper, ops, (FilterOperationsWrapper::create()));
return ops.operations();
}
LayoutRectOutsets ComputedStyle::imageOutsets(const NinePieceImage& image) const
{
return LayoutRectOutsets(
NinePieceImage::computeOutset(image.outset().top(), borderTopWidth()),
NinePieceImage::computeOutset(image.outset().right(), borderRightWidth()),
NinePieceImage::computeOutset(image.outset().bottom(), borderBottomWidth()),
NinePieceImage::computeOutset(image.outset().left(), borderLeftWidth()));
}
void ComputedStyle::setBorderImageSource(StyleImage* image)
{
if (m_surround->border.m_image.image() == image)
return;
m_surround.access()->border.m_image.setImage(image);
}
void ComputedStyle::setBorderImageSlices(const LengthBox& slices)
{
if (m_surround->border.m_image.imageSlices() == slices)
return;
m_surround.access()->border.m_image.setImageSlices(slices);
}
void ComputedStyle::setBorderImageSlicesFill(bool fill)
{
if (m_surround->border.m_image.fill() == fill)
return;
m_surround.access()->border.m_image.setFill(fill);
}
void ComputedStyle::setBorderImageWidth(const BorderImageLengthBox& slices)
{
if (m_surround->border.m_image.borderSlices() == slices)
return;
m_surround.access()->border.m_image.setBorderSlices(slices);
}
void ComputedStyle::setBorderImageOutset(const BorderImageLengthBox& outset)
{
if (m_surround->border.m_image.outset() == outset)
return;
m_surround.access()->border.m_image.setOutset(outset);
}
bool ComputedStyle::borderObscuresBackground() const
{
if (!hasBorder())
return false;
// Bail if we have any border-image for now. We could look at the image alpha to improve this.
if (borderImage().image())
return false;
BorderEdge edges[4];
getBorderEdgeInfo(edges);
for (int i = BSTop; i <= BSLeft; ++i) {
const BorderEdge& currEdge = edges[i];
if (!currEdge.obscuresBackground())
return false;
}
return true;
}
void ComputedStyle::getBorderEdgeInfo(BorderEdge edges[], bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
{
bool horizontal = isHorizontalWritingMode();
edges[BSTop] = BorderEdge(borderTopWidth(),
visitedDependentColor(CSSPropertyBorderTopColor),
borderTopStyle(),
horizontal || includeLogicalLeftEdge);
edges[BSRight] = BorderEdge(borderRightWidth(),
visitedDependentColor(CSSPropertyBorderRightColor),
borderRightStyle(),
!horizontal || includeLogicalRightEdge);
edges[BSBottom] = BorderEdge(borderBottomWidth(),
visitedDependentColor(CSSPropertyBorderBottomColor),
borderBottomStyle(),
horizontal || includeLogicalRightEdge);
edges[BSLeft] = BorderEdge(borderLeftWidth(),
visitedDependentColor(CSSPropertyBorderLeftColor),
borderLeftStyle(),
!horizontal || includeLogicalLeftEdge);
}
void ComputedStyle::copyChildDependentFlagsFrom(const ComputedStyle& other)
{
setEmptyState(other.emptyState());
if (other.hasExplicitlyInheritedProperties())
setHasExplicitlyInheritedProperties();
}
bool ComputedStyle::shadowListHasCurrentColor(const ShadowList* shadowList)
{
if (!shadowList)
return false;
for (size_t i = shadowList->shadows().size(); i--; ) {
if (shadowList->shadows()[i].color().isCurrentColor())
return true;
}
return false;
}
static inline Vector<GridTrackSize> initialGridAutoTracks()
{
Vector<GridTrackSize> trackSizeList;
trackSizeList.reserveInitialCapacity(1);
trackSizeList.uncheckedAppend(GridTrackSize(Length(Auto)));
return trackSizeList;
}
Vector<GridTrackSize> ComputedStyle::initialGridAutoColumns()
{
return initialGridAutoTracks();
}
Vector<GridTrackSize> ComputedStyle::initialGridAutoRows()
{
return initialGridAutoTracks();
}
int adjustForAbsoluteZoom(int value, float zoomFactor)
{
if (zoomFactor == 1)
return value;
// Needed because computeLengthInt truncates (rather than rounds) when scaling up.
float fvalue = value;
if (zoomFactor > 1) {
if (value < 0)
fvalue -= 0.5f;
else
fvalue += 0.5f;
}
return roundForImpreciseConversion<int>(fvalue / zoomFactor);
}
} // namespace blink