| /* |
| * 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 "config.h" |
| #include "core/rendering/style/RenderStyle.h" |
| |
| #include <algorithm> |
| #include "core/css/resolver/StyleResolver.h" |
| #include "core/rendering/RenderTheme.h" |
| #include "core/rendering/TextAutosizer.h" |
| #include "core/rendering/style/AppliedTextDecoration.h" |
| #include "core/rendering/style/ContentData.h" |
| #include "core/rendering/style/QuotesData.h" |
| #include "core/rendering/style/ShadowList.h" |
| #include "core/rendering/style/StyleImage.h" |
| #include "core/rendering/style/StyleInheritedData.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 "wtf/MathExtras.h" |
| |
| namespace blink { |
| |
| struct SameSizeAsBorderValue { |
| RGBA32 m_color; |
| unsigned m_width; |
| }; |
| |
| COMPILE_ASSERT(sizeof(BorderValue) == sizeof(SameSizeAsBorderValue), BorderValue_should_not_grow); |
| |
| struct SameSizeAsRenderStyle : public RefCounted<SameSizeAsRenderStyle> { |
| void* dataRefs[7]; |
| void* ownPtrs[1]; |
| void* dataRefSvgStyle; |
| |
| struct InheritedFlags { |
| unsigned m_bitfields[2]; |
| } inherited_flags; |
| |
| struct NonInheritedFlags { |
| unsigned m_bitfields[2]; |
| } noninherited_flags; |
| }; |
| |
| COMPILE_ASSERT(sizeof(RenderStyle) == sizeof(SameSizeAsRenderStyle), RenderStyle_should_stay_small); |
| |
| inline RenderStyle* defaultStyle() |
| { |
| DEFINE_STATIC_REF(RenderStyle, s_defaultStyle, (RenderStyle::createDefaultStyle())); |
| return s_defaultStyle; |
| } |
| |
| PassRefPtr<RenderStyle> RenderStyle::create() |
| { |
| return adoptRef(new RenderStyle()); |
| } |
| |
| PassRefPtr<RenderStyle> RenderStyle::createDefaultStyle() |
| { |
| return adoptRef(new RenderStyle(DefaultStyle)); |
| } |
| |
| PassRefPtr<RenderStyle> RenderStyle::createAnonymousStyleWithDisplay(const RenderStyle* parentStyle, EDisplay display) |
| { |
| RefPtr<RenderStyle> newStyle = RenderStyle::create(); |
| newStyle->inheritFrom(parentStyle); |
| newStyle->inheritUnicodeBidiFrom(parentStyle); |
| newStyle->setDisplay(display); |
| return newStyle; |
| } |
| |
| PassRefPtr<RenderStyle> RenderStyle::clone(const RenderStyle* other) |
| { |
| return adoptRef(new RenderStyle(*other)); |
| } |
| |
| ALWAYS_INLINE RenderStyle::RenderStyle() |
| : m_box(defaultStyle()->m_box) |
| , visual(defaultStyle()->visual) |
| , m_background(defaultStyle()->m_background) |
| , surround(defaultStyle()->surround) |
| , rareNonInheritedData(defaultStyle()->rareNonInheritedData) |
| , rareInheritedData(defaultStyle()->rareInheritedData) |
| , inherited(defaultStyle()->inherited) |
| , m_svgStyle(defaultStyle()->m_svgStyle) |
| { |
| setBitDefaults(); // Would it be faster to copy this from the default style? |
| COMPILE_ASSERT((sizeof(InheritedFlags) <= 8), InheritedFlags_does_not_grow); |
| COMPILE_ASSERT((sizeof(NonInheritedFlags) <= 8), NonInheritedFlags_does_not_grow); |
| } |
| |
| ALWAYS_INLINE RenderStyle::RenderStyle(DefaultStyleTag) |
| { |
| setBitDefaults(); |
| |
| m_box.init(); |
| visual.init(); |
| m_background.init(); |
| surround.init(); |
| rareNonInheritedData.init(); |
| rareNonInheritedData.access()->m_deprecatedFlexibleBox.init(); |
| rareNonInheritedData.access()->m_flexibleBox.init(); |
| rareNonInheritedData.access()->m_marquee.init(); |
| rareNonInheritedData.access()->m_multiCol.init(); |
| rareNonInheritedData.access()->m_transform.init(); |
| rareNonInheritedData.access()->m_willChange.init(); |
| rareNonInheritedData.access()->m_filter.init(); |
| rareNonInheritedData.access()->m_grid.init(); |
| rareNonInheritedData.access()->m_gridItem.init(); |
| rareInheritedData.init(); |
| inherited.init(); |
| m_svgStyle.init(); |
| } |
| |
| ALWAYS_INLINE RenderStyle::RenderStyle(const RenderStyle& o) |
| : RefCounted<RenderStyle>() |
| , m_box(o.m_box) |
| , visual(o.visual) |
| , m_background(o.m_background) |
| , surround(o.surround) |
| , rareNonInheritedData(o.rareNonInheritedData) |
| , rareInheritedData(o.rareInheritedData) |
| , inherited(o.inherited) |
| , m_svgStyle(o.m_svgStyle) |
| , inherited_flags(o.inherited_flags) |
| , noninherited_flags(o.noninherited_flags) |
| { |
| } |
| |
| static StyleRecalcChange diffPseudoStyles(const RenderStyle* oldStyle, const RenderStyle* 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 = FIRST_PUBLIC_PSEUDOID; pseudoId < FIRST_INTERNAL_PSEUDOID; pseudoId = static_cast<PseudoId>(pseudoId + 1)) { |
| if (!oldStyle->hasPseudoStyle(pseudoId)) |
| continue; |
| RenderStyle* newPseudoStyle = newStyle->getCachedPseudoStyle(pseudoId); |
| if (!newPseudoStyle) |
| return NoInherit; |
| RenderStyle* oldPseudoStyle = oldStyle->getCachedPseudoStyle(pseudoId); |
| if (oldPseudoStyle && *oldPseudoStyle != *newPseudoStyle) |
| return NoInherit; |
| } |
| return NoChange; |
| } |
| |
| StyleRecalcChange RenderStyle::stylePropagationDiff(const RenderStyle* oldStyle, const RenderStyle* newStyle) |
| { |
| if ((!oldStyle && newStyle) || (oldStyle && !newStyle)) |
| return Reattach; |
| |
| if (!oldStyle && !newStyle) |
| return NoChange; |
| |
| if (oldStyle->display() != newStyle->display() |
| || oldStyle->hasPseudoStyle(FIRST_LETTER) != newStyle->hasPseudoStyle(FIRST_LETTER) |
| || oldStyle->columnSpan() != newStyle->columnSpan() |
| || !oldStyle->contentDataEquivalent(newStyle) |
| || oldStyle->hasTextCombine() != newStyle->hasTextCombine() |
| || oldStyle->justifyItems() != newStyle->justifyItems() |
| || oldStyle->alignItems() != newStyle->alignItems()) |
| return Reattach; |
| |
| if (*oldStyle == *newStyle) |
| return diffPseudoStyles(oldStyle, newStyle); |
| |
| if (oldStyle->inheritedNotEqual(newStyle) |
| || oldStyle->hasExplicitlyInheritedProperties() |
| || newStyle->hasExplicitlyInheritedProperties()) |
| return Inherit; |
| |
| return NoInherit; |
| } |
| |
| void RenderStyle::inheritFrom(const RenderStyle* 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(); |
| rareInheritedData = inheritParent->rareInheritedData; |
| setUserModify(currentUserModify); |
| } else |
| rareInheritedData = inheritParent->rareInheritedData; |
| inherited = inheritParent->inherited; |
| inherited_flags = inheritParent->inherited_flags; |
| if (m_svgStyle != inheritParent->m_svgStyle) |
| m_svgStyle.access()->inheritFrom(inheritParent->m_svgStyle.get()); |
| } |
| |
| void RenderStyle::copyNonInheritedFrom(const RenderStyle* other) |
| { |
| m_box = other->m_box; |
| visual = other->visual; |
| m_background = other->m_background; |
| surround = other->surround; |
| rareNonInheritedData = other->rareNonInheritedData; |
| // The flags are copied one-by-one because noninherited_flags contains a bunch of stuff other than real style data. |
| noninherited_flags.effectiveDisplay = other->noninherited_flags.effectiveDisplay; |
| noninherited_flags.originalDisplay = other->noninherited_flags.originalDisplay; |
| noninherited_flags.overflowX = other->noninherited_flags.overflowX; |
| noninherited_flags.overflowY = other->noninherited_flags.overflowY; |
| noninherited_flags.verticalAlign = other->noninherited_flags.verticalAlign; |
| noninherited_flags.clear = other->noninherited_flags.clear; |
| noninherited_flags.position = other->noninherited_flags.position; |
| noninherited_flags.floating = other->noninherited_flags.floating; |
| noninherited_flags.tableLayout = other->noninherited_flags.tableLayout; |
| noninherited_flags.unicodeBidi = other->noninherited_flags.unicodeBidi; |
| noninherited_flags.pageBreakBefore = other->noninherited_flags.pageBreakBefore; |
| noninherited_flags.pageBreakAfter = other->noninherited_flags.pageBreakAfter; |
| noninherited_flags.pageBreakInside = other->noninherited_flags.pageBreakInside; |
| noninherited_flags.explicitInheritance = other->noninherited_flags.explicitInheritance; |
| noninherited_flags.currentColor = other->noninherited_flags.currentColor; |
| noninherited_flags.hasViewportUnits = other->noninherited_flags.hasViewportUnits; |
| if (m_svgStyle != other->m_svgStyle) |
| m_svgStyle.access()->copyNonInheritedFrom(other->m_svgStyle.get()); |
| ASSERT(zoom() == initialZoom()); |
| } |
| |
| bool RenderStyle::operator==(const RenderStyle& o) const |
| { |
| // compare everything except the pseudoStyle pointer |
| return inherited_flags == o.inherited_flags |
| && noninherited_flags == o.noninherited_flags |
| && m_box == o.m_box |
| && visual == o.visual |
| && m_background == o.m_background |
| && surround == o.surround |
| && rareNonInheritedData == o.rareNonInheritedData |
| && rareInheritedData == o.rareInheritedData |
| && inherited == o.inherited |
| && m_svgStyle == o.m_svgStyle; |
| } |
| |
| bool RenderStyle::isStyleAvailable() const |
| { |
| return this != StyleResolver::styleNotYetAvailable(); |
| } |
| |
| bool RenderStyle::hasUniquePseudoStyle() const |
| { |
| if (!m_cachedPseudoStyles || styleType() != NOPSEUDO) |
| return false; |
| |
| for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) { |
| RenderStyle* pseudoStyle = m_cachedPseudoStyles->at(i).get(); |
| if (pseudoStyle->unique()) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| RenderStyle* RenderStyle::getCachedPseudoStyle(PseudoId pid) const |
| { |
| if (!m_cachedPseudoStyles || !m_cachedPseudoStyles->size()) |
| return 0; |
| |
| if (styleType() != NOPSEUDO) |
| return 0; |
| |
| for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) { |
| RenderStyle* pseudoStyle = m_cachedPseudoStyles->at(i).get(); |
| if (pseudoStyle->styleType() == pid) |
| return pseudoStyle; |
| } |
| |
| return 0; |
| } |
| |
| RenderStyle* RenderStyle::addCachedPseudoStyle(PassRefPtr<RenderStyle> pseudo) |
| { |
| if (!pseudo) |
| return 0; |
| |
| ASSERT(pseudo->styleType() > NOPSEUDO); |
| |
| RenderStyle* result = pseudo.get(); |
| |
| if (!m_cachedPseudoStyles) |
| m_cachedPseudoStyles = adoptPtr(new PseudoStyleCache); |
| |
| m_cachedPseudoStyles->append(pseudo); |
| |
| return result; |
| } |
| |
| void RenderStyle::removeCachedPseudoStyle(PseudoId pid) |
| { |
| if (!m_cachedPseudoStyles) |
| return; |
| for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) { |
| RenderStyle* pseudoStyle = m_cachedPseudoStyles->at(i).get(); |
| if (pseudoStyle->styleType() == pid) { |
| m_cachedPseudoStyles->remove(i); |
| return; |
| } |
| } |
| } |
| |
| bool RenderStyle::inheritedNotEqual(const RenderStyle* other) const |
| { |
| return inherited_flags != other->inherited_flags |
| || inherited != other->inherited |
| || m_svgStyle->inheritedNotEqual(other->m_svgStyle.get()) |
| || rareInheritedData != other->rareInheritedData; |
| } |
| |
| bool RenderStyle::inheritedDataShared(const RenderStyle* other) const |
| { |
| // This is a fast check that only looks if the data structures are shared. |
| return inherited_flags == other->inherited_flags |
| && inherited.get() == other->inherited.get() |
| && m_svgStyle.get() == other->m_svgStyle.get() |
| && rareInheritedData.get() == other->rareInheritedData.get(); |
| } |
| |
| static bool positionedObjectMovedOnly(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 and changed then this |
| // is not just a movement - we need to resize to our container. |
| if (width.isIntrinsicOrAuto() |
| && ((!a.left().isIntrinsicOrAuto() && a.left() != b.left()) |
| || (!a.right().isIntrinsicOrAuto() && a.right() != b.right()))) |
| 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; |
| } |
| |
| StyleDifference RenderStyle::visualInvalidationDiff(const RenderStyle& 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() && position() != StaticPosition && surround->offset != other.surround->offset) { |
| // Optimize for the case where a positioned layer is moving but not changing size. |
| if ((position() == AbsolutePosition || position() == FixedPosition) |
| && positionedObjectMovedOnly(surround->offset, other.surround->offset, m_box->width())) { |
| diff.setNeedsPositionedMovementLayout(); |
| } else { |
| // 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). |
| diff.setNeedsFullLayout(); |
| } |
| } |
| |
| if (diffNeedsPaintInvalidationLayer(other)) |
| diff.setNeedsPaintInvalidationLayer(); |
| else if (diffNeedsPaintInvalidationObject(other)) |
| diff.setNeedsPaintInvalidationObject(); |
| |
| updatePropertySpecificDifferences(other, diff); |
| |
| // 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 RenderObject, so we will get a chance to fire off |
| // the resulting transition properly. |
| |
| return diff; |
| } |
| |
| bool RenderStyle::diffNeedsFullLayoutAndPaintInvalidation(const RenderStyle& 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 renderer knows how to exactly invalidate paints caused by the layout change |
| // instead of forced full paint invalidation. |
| |
| if (surround.get() != other.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 (rareNonInheritedData.get() != other.rareNonInheritedData.get()) { |
| if (rareNonInheritedData->m_appearance != other.rareNonInheritedData->m_appearance |
| || rareNonInheritedData->marginBeforeCollapse != other.rareNonInheritedData->marginBeforeCollapse |
| || rareNonInheritedData->marginAfterCollapse != other.rareNonInheritedData->marginAfterCollapse |
| || rareNonInheritedData->lineClamp != other.rareNonInheritedData->lineClamp |
| || rareNonInheritedData->textOverflow != other.rareNonInheritedData->textOverflow |
| || rareNonInheritedData->m_wrapFlow != other.rareNonInheritedData->m_wrapFlow |
| || rareNonInheritedData->m_wrapThrough != other.rareNonInheritedData->m_wrapThrough |
| || rareNonInheritedData->m_shapeMargin != other.rareNonInheritedData->m_shapeMargin |
| || rareNonInheritedData->m_order != other.rareNonInheritedData->m_order |
| || rareNonInheritedData->m_alignContent != other.rareNonInheritedData->m_alignContent |
| || rareNonInheritedData->m_alignItems != other.rareNonInheritedData->m_alignItems |
| || rareNonInheritedData->m_alignSelf != other.rareNonInheritedData->m_alignSelf |
| || rareNonInheritedData->m_justifyContent != other.rareNonInheritedData->m_justifyContent |
| || rareNonInheritedData->m_grid.get() != other.rareNonInheritedData->m_grid.get() |
| || rareNonInheritedData->m_gridItem.get() != other.rareNonInheritedData->m_gridItem.get() |
| || rareNonInheritedData->m_textCombine != other.rareNonInheritedData->m_textCombine |
| || rareNonInheritedData->hasFilters() != other.rareNonInheritedData->hasFilters()) |
| return true; |
| |
| if (rareNonInheritedData->m_deprecatedFlexibleBox.get() != other.rareNonInheritedData->m_deprecatedFlexibleBox.get() |
| && *rareNonInheritedData->m_deprecatedFlexibleBox.get() != *other.rareNonInheritedData->m_deprecatedFlexibleBox.get()) |
| return true; |
| |
| if (rareNonInheritedData->m_flexibleBox.get() != other.rareNonInheritedData->m_flexibleBox.get() |
| && *rareNonInheritedData->m_flexibleBox.get() != *other.rareNonInheritedData->m_flexibleBox.get()) |
| return true; |
| |
| // FIXME: We should add an optimized form of layout that just recomputes visual overflow. |
| if (!rareNonInheritedData->shadowDataEquivalent(*other.rareNonInheritedData.get())) |
| return true; |
| |
| if (!rareNonInheritedData->reflectionDataEquivalent(*other.rareNonInheritedData.get())) |
| return true; |
| |
| if (rareNonInheritedData->m_multiCol.get() != other.rareNonInheritedData->m_multiCol.get() |
| && *rareNonInheritedData->m_multiCol.get() != *other.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 = rareNonInheritedData->m_counterDirectives.get(); |
| const CounterDirectiveMap* mapB = other.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 (hasAutoZIndex() != other.hasAutoZIndex() && rareNonInheritedData->hasOpacity() != other.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 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 (rareInheritedData.get() != other.rareInheritedData.get()) { |
| if (rareInheritedData->highlight != other.rareInheritedData->highlight |
| || rareInheritedData->indent != other.rareInheritedData->indent |
| || rareInheritedData->m_textAlignLast != other.rareInheritedData->m_textAlignLast |
| || rareInheritedData->m_textIndentLine != other.rareInheritedData->m_textIndentLine |
| || rareInheritedData->m_effectiveZoom != other.rareInheritedData->m_effectiveZoom |
| || rareInheritedData->wordBreak != other.rareInheritedData->wordBreak |
| || rareInheritedData->overflowWrap != other.rareInheritedData->overflowWrap |
| || rareInheritedData->lineBreak != other.rareInheritedData->lineBreak |
| || rareInheritedData->textSecurity != other.rareInheritedData->textSecurity |
| || rareInheritedData->hyphens != other.rareInheritedData->hyphens |
| || rareInheritedData->hyphenationLimitBefore != other.rareInheritedData->hyphenationLimitBefore |
| || rareInheritedData->hyphenationLimitAfter != other.rareInheritedData->hyphenationLimitAfter |
| || rareInheritedData->hyphenationString != other.rareInheritedData->hyphenationString |
| || rareInheritedData->locale != other.rareInheritedData->locale |
| || rareInheritedData->m_rubyPosition != other.rareInheritedData->m_rubyPosition |
| || rareInheritedData->textEmphasisMark != other.rareInheritedData->textEmphasisMark |
| || rareInheritedData->textEmphasisPosition != other.rareInheritedData->textEmphasisPosition |
| || rareInheritedData->textEmphasisCustomMark != other.rareInheritedData->textEmphasisCustomMark |
| || rareInheritedData->m_textJustify != other.rareInheritedData->m_textJustify |
| || rareInheritedData->m_textOrientation != other.rareInheritedData->m_textOrientation |
| || rareInheritedData->m_tabSize != other.rareInheritedData->m_tabSize |
| || rareInheritedData->m_lineBoxContain != other.rareInheritedData->m_lineBoxContain |
| || rareInheritedData->listStyleImage != other.rareInheritedData->listStyleImage |
| || rareInheritedData->textStrokeWidth != other.rareInheritedData->textStrokeWidth) |
| return true; |
| |
| if (!rareInheritedData->shadowDataEquivalent(*other.rareInheritedData.get())) |
| return true; |
| |
| if (!rareInheritedData->quotesDataEquivalent(*other.rareInheritedData.get())) |
| return true; |
| } |
| |
| if (inherited->textAutosizingMultiplier != other.inherited->textAutosizingMultiplier) |
| return true; |
| |
| if (inherited.get() != other.inherited.get()) { |
| if (inherited->line_height != other.inherited->line_height |
| || inherited->font != other.inherited->font |
| || inherited->horizontal_border_spacing != other.inherited->horizontal_border_spacing |
| || inherited->vertical_border_spacing != other.inherited->vertical_border_spacing) |
| return true; |
| } |
| |
| if (inherited_flags._box_direction != other.inherited_flags._box_direction |
| || inherited_flags.m_rtlOrdering != other.inherited_flags.m_rtlOrdering |
| || inherited_flags._text_align != other.inherited_flags._text_align |
| || inherited_flags._text_transform != other.inherited_flags._text_transform |
| || inherited_flags._direction != other.inherited_flags._direction |
| || inherited_flags._white_space != other.inherited_flags._white_space |
| || inherited_flags.m_writingMode != other.inherited_flags.m_writingMode) |
| return true; |
| |
| if (noninherited_flags.overflowX != other.noninherited_flags.overflowX |
| || noninherited_flags.overflowY != other.noninherited_flags.overflowY |
| || noninherited_flags.clear != other.noninherited_flags.clear |
| || noninherited_flags.unicodeBidi != other.noninherited_flags.unicodeBidi |
| || noninherited_flags.position != other.noninherited_flags.position |
| || noninherited_flags.floating != other.noninherited_flags.floating |
| || noninherited_flags.originalDisplay != other.noninherited_flags.originalDisplay) |
| return true; |
| |
| if (noninherited_flags.effectiveDisplay >= FIRST_TABLE_DISPLAY && noninherited_flags.effectiveDisplay <= LAST_TABLE_DISPLAY) { |
| if (inherited_flags._border_collapse != other.inherited_flags._border_collapse |
| || inherited_flags._empty_cells != other.inherited_flags._empty_cells |
| || inherited_flags._caption_side != other.inherited_flags._caption_side |
| || noninherited_flags.tableLayout != other.noninherited_flags.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 (inherited_flags._border_collapse |
| && ((borderTopStyle() == BHIDDEN && other.borderTopStyle() == BNONE) |
| || (borderTopStyle() == BNONE && other.borderTopStyle() == BHIDDEN) |
| || (borderBottomStyle() == BHIDDEN && other.borderBottomStyle() == BNONE) |
| || (borderBottomStyle() == BNONE && other.borderBottomStyle() == BHIDDEN) |
| || (borderLeftStyle() == BHIDDEN && other.borderLeftStyle() == BNONE) |
| || (borderLeftStyle() == BNONE && other.borderLeftStyle() == BHIDDEN) |
| || (borderRightStyle() == BHIDDEN && other.borderRightStyle() == BNONE) |
| || (borderRightStyle() == BNONE && other.borderRightStyle() == BHIDDEN))) |
| return true; |
| } else if (noninherited_flags.effectiveDisplay == LIST_ITEM) { |
| if (inherited_flags._list_style_type != other.inherited_flags._list_style_type |
| || inherited_flags._list_style_position != other.inherited_flags._list_style_position) |
| return true; |
| } |
| |
| if ((visibility() == COLLAPSE) != (other.visibility() == COLLAPSE)) |
| return true; |
| |
| if (!m_background->outline().visuallyEqual(other.m_background->outline())) { |
| // FIXME: We only really need to recompute the overflow but we don't have an optimized layout for it. |
| return true; |
| } |
| |
| // Movement of non-static-positioned object is special cased in RenderStyle::visualInvalidationDiff(). |
| |
| return false; |
| } |
| |
| bool RenderStyle::diffNeedsFullLayout(const RenderStyle& 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 (noninherited_flags.verticalAlign != other.noninherited_flags.verticalAlign) |
| return true; |
| |
| if (surround.get() != other.surround.get()) { |
| if (surround->margin != other.surround->margin) |
| return true; |
| |
| if (surround->padding != other.surround->padding) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| bool RenderStyle::diffNeedsPaintInvalidationLayer(const RenderStyle& other) const |
| { |
| if (position() != StaticPosition && (visual->clip != other.visual->clip || visual->hasAutoClip != other.visual->hasAutoClip)) |
| return true; |
| |
| if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) { |
| if (RuntimeEnabledFeatures::cssCompositingEnabled() |
| && (rareNonInheritedData->m_effectiveBlendMode != other.rareNonInheritedData->m_effectiveBlendMode |
| || rareNonInheritedData->m_isolation != other.rareNonInheritedData->m_isolation)) |
| return true; |
| |
| if (rareNonInheritedData->m_mask != other.rareNonInheritedData->m_mask |
| || rareNonInheritedData->m_maskBoxImage != other.rareNonInheritedData->m_maskBoxImage) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| bool RenderStyle::diffNeedsPaintInvalidationObject(const RenderStyle& other) const |
| { |
| if (inherited_flags._visibility != other.inherited_flags._visibility |
| || inherited_flags.m_printColorAdjust != other.inherited_flags.m_printColorAdjust |
| || inherited_flags._insideLink != other.inherited_flags._insideLink |
| || !surround->border.visuallyEqual(other.surround->border) |
| || !m_background->visuallyEqual(*other.m_background)) |
| return true; |
| |
| if (rareInheritedData.get() != other.rareInheritedData.get()) { |
| if (rareInheritedData->userModify != other.rareInheritedData->userModify |
| || rareInheritedData->userSelect != other.rareInheritedData->userSelect |
| || rareInheritedData->m_imageRendering != other.rareInheritedData->m_imageRendering) |
| return true; |
| } |
| |
| if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) { |
| if (rareNonInheritedData->userDrag != other.rareNonInheritedData->userDrag |
| || rareNonInheritedData->m_borderFit != other.rareNonInheritedData->m_borderFit |
| || rareNonInheritedData->m_objectFit != other.rareNonInheritedData->m_objectFit |
| || rareNonInheritedData->m_objectPosition != other.rareNonInheritedData->m_objectPosition |
| || rareNonInheritedData->m_shapeOutside != other.rareNonInheritedData->m_shapeOutside |
| || rareNonInheritedData->m_clipPath != other.rareNonInheritedData->m_clipPath) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| void RenderStyle::updatePropertySpecificDifferences(const RenderStyle& other, StyleDifference& diff) const |
| { |
| // StyleAdjuster has ensured that zIndex is non-auto only if it's applicable. |
| if (m_box->zIndex() != other.m_box->zIndex() || m_box->hasAutoZIndex() != other.m_box->hasAutoZIndex()) |
| diff.setZIndexChanged(); |
| |
| if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) { |
| if (!transformDataEquivalent(other)) |
| diff.setTransformChanged(); |
| |
| if (rareNonInheritedData->opacity != other.rareNonInheritedData->opacity) |
| diff.setOpacityChanged(); |
| |
| if (rareNonInheritedData->m_filter != other.rareNonInheritedData->m_filter) |
| diff.setFilterChanged(); |
| } |
| |
| if (!diff.needsPaintInvalidation()) { |
| if (inherited->color != other.inherited->color |
| || inherited_flags.m_textUnderline != other.inherited_flags.m_textUnderline |
| || visual->textDecoration != other.visual->textDecoration) { |
| diff.setTextOrColorChanged(); |
| } else if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) { |
| if (rareNonInheritedData->m_textDecorationStyle != other.rareNonInheritedData->m_textDecorationStyle |
| || rareNonInheritedData->m_textDecorationColor != other.rareNonInheritedData->m_textDecorationColor) |
| diff.setTextOrColorChanged(); |
| } else if (rareInheritedData.get() != other.rareInheritedData.get()) { |
| if (rareInheritedData->textFillColor() != other.rareInheritedData->textFillColor() |
| || rareInheritedData->textStrokeColor() != other.rareInheritedData->textStrokeColor() |
| || rareInheritedData->textEmphasisColor() != other.rareInheritedData->textEmphasisColor() |
| || rareInheritedData->textEmphasisFill != other.rareInheritedData->textEmphasisFill |
| || rareInheritedData->appliedTextDecorations != other.rareInheritedData->appliedTextDecorations) |
| diff.setTextOrColorChanged(); |
| } |
| } |
| } |
| |
| void RenderStyle::addCursor(PassRefPtr<StyleImage> image, const IntPoint& hotSpot) |
| { |
| if (!rareInheritedData.access()->cursorData) |
| rareInheritedData.access()->cursorData = CursorList::create(); |
| rareInheritedData.access()->cursorData->append(CursorData(image, hotSpot)); |
| } |
| |
| void RenderStyle::setCursorList(PassRefPtr<CursorList> other) |
| { |
| rareInheritedData.access()->cursorData = other; |
| } |
| |
| void RenderStyle::setQuotes(PassRefPtr<QuotesData> q) |
| { |
| rareInheritedData.access()->quotes = q; |
| } |
| |
| void RenderStyle::clearCursorList() |
| { |
| if (rareInheritedData->cursorData) |
| rareInheritedData.access()->cursorData = nullptr; |
| } |
| |
| void RenderStyle::addCallbackSelector(const String& selector) |
| { |
| if (!rareNonInheritedData->m_callbackSelectors.contains(selector)) |
| rareNonInheritedData.access()->m_callbackSelectors.append(selector); |
| } |
| |
| void RenderStyle::clearContent() |
| { |
| if (rareNonInheritedData->m_content) |
| rareNonInheritedData.access()->m_content = nullptr; |
| } |
| |
| void RenderStyle::appendContent(PassOwnPtr<ContentData> contentData) |
| { |
| OwnPtr<ContentData>& content = rareNonInheritedData.access()->m_content; |
| ContentData* lastContent = content.get(); |
| while (lastContent && lastContent->next()) |
| lastContent = lastContent->next(); |
| |
| if (lastContent) |
| lastContent->setNext(contentData); |
| else |
| content = contentData; |
| } |
| |
| void RenderStyle::setContent(PassRefPtr<StyleImage> image, bool add) |
| { |
| if (!image) |
| return; |
| |
| if (add) { |
| appendContent(ContentData::create(image)); |
| return; |
| } |
| |
| rareNonInheritedData.access()->m_content = ContentData::create(image); |
| } |
| |
| void RenderStyle::setContent(const String& string, bool add) |
| { |
| OwnPtr<ContentData>& content = rareNonInheritedData.access()->m_content; |
| if (add) { |
| ContentData* lastContent = content.get(); |
| while (lastContent && lastContent->next()) |
| lastContent = lastContent->next(); |
| |
| if (lastContent) { |
| // We attempt to merge with the last ContentData if possible. |
| if (lastContent->isText()) { |
| TextContentData* textContent = toTextContentData(lastContent); |
| textContent->setText(textContent->text() + string); |
| } else |
| lastContent->setNext(ContentData::create(string)); |
| |
| return; |
| } |
| } |
| |
| content = ContentData::create(string); |
| } |
| |
| void RenderStyle::setContent(PassOwnPtr<CounterContent> counter, bool add) |
| { |
| if (!counter) |
| return; |
| |
| if (add) { |
| appendContent(ContentData::create(counter)); |
| return; |
| } |
| |
| rareNonInheritedData.access()->m_content = ContentData::create(counter); |
| } |
| |
| void RenderStyle::setContent(QuoteType quote, bool add) |
| { |
| if (add) { |
| appendContent(ContentData::create(quote)); |
| return; |
| } |
| |
| rareNonInheritedData.access()->m_content = ContentData::create(quote); |
| } |
| |
| WebBlendMode RenderStyle::blendMode() const |
| { |
| if (RuntimeEnabledFeatures::cssCompositingEnabled()) |
| return static_cast<WebBlendMode>(rareNonInheritedData->m_effectiveBlendMode); |
| return WebBlendModeNormal; |
| } |
| |
| void RenderStyle::setBlendMode(WebBlendMode v) |
| { |
| if (RuntimeEnabledFeatures::cssCompositingEnabled()) |
| rareNonInheritedData.access()->m_effectiveBlendMode = v; |
| } |
| |
| bool RenderStyle::hasBlendMode() const |
| { |
| if (RuntimeEnabledFeatures::cssCompositingEnabled()) |
| return static_cast<WebBlendMode>(rareNonInheritedData->m_effectiveBlendMode) != WebBlendModeNormal; |
| return false; |
| } |
| |
| EIsolation RenderStyle::isolation() const |
| { |
| if (RuntimeEnabledFeatures::cssCompositingEnabled()) |
| return static_cast<EIsolation>(rareNonInheritedData->m_isolation); |
| return IsolationAuto; |
| } |
| |
| void RenderStyle::setIsolation(EIsolation v) |
| { |
| if (RuntimeEnabledFeatures::cssCompositingEnabled()) |
| rareNonInheritedData.access()->m_isolation = v; |
| } |
| |
| bool RenderStyle::hasIsolation() const |
| { |
| if (RuntimeEnabledFeatures::cssCompositingEnabled()) |
| return rareNonInheritedData->m_isolation != IsolationAuto; |
| return false; |
| } |
| |
| bool RenderStyle::hasWillChangeCompositingHint() const |
| { |
| for (size_t i = 0; i < rareNonInheritedData->m_willChange->m_properties.size(); ++i) { |
| switch (rareNonInheritedData->m_willChange->m_properties[i]) { |
| case CSSPropertyOpacity: |
| case CSSPropertyTransform: |
| case CSSPropertyWebkitTransform: |
| case CSSPropertyTop: |
| case CSSPropertyLeft: |
| case CSSPropertyBottom: |
| case CSSPropertyRight: |
| return true; |
| default: |
| break; |
| } |
| } |
| return false; |
| } |
| |
| inline bool requireTransformOrigin(const Vector<RefPtr<TransformOperation> >& transformOperations, RenderStyle::ApplyTransformOrigin applyOrigin) |
| { |
| // 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 != RenderStyle::IncludeTransformOrigin) |
| return false; |
| |
| 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 false; |
| } |
| |
| void RenderStyle::applyTransform(TransformationMatrix& transform, const LayoutSize& borderBoxSize, ApplyTransformOrigin applyOrigin) const |
| { |
| applyTransform(transform, FloatRect(FloatPoint(), borderBoxSize), applyOrigin); |
| } |
| |
| void RenderStyle::applyTransform(TransformationMatrix& transform, const FloatRect& boundingBox, ApplyTransformOrigin applyOrigin) const |
| { |
| const Vector<RefPtr<TransformOperation> >& transformOperations = rareNonInheritedData->m_transform->m_operations.operations(); |
| bool applyTransformOrigin = requireTransformOrigin(transformOperations, applyOrigin); |
| |
| float offsetX = transformOriginX().type() == Percent ? boundingBox.x() : 0; |
| float offsetY = transformOriginY().type() == Percent ? boundingBox.y() : 0; |
| |
| if (applyTransformOrigin) { |
| transform.translate3d(floatValueForLength(transformOriginX(), boundingBox.width()) + offsetX, |
| floatValueForLength(transformOriginY(), boundingBox.height()) + offsetY, |
| transformOriginZ()); |
| } |
| |
| unsigned size = transformOperations.size(); |
| for (unsigned i = 0; i < size; ++i) |
| transformOperations[i]->apply(transform, boundingBox.size()); |
| |
| if (applyTransformOrigin) { |
| transform.translate3d(-floatValueForLength(transformOriginX(), boundingBox.width()) - offsetX, |
| -floatValueForLength(transformOriginY(), boundingBox.height()) - offsetY, |
| -transformOriginZ()); |
| } |
| } |
| |
| void RenderStyle::setTextShadow(PassRefPtr<ShadowList> s) |
| { |
| rareInheritedData.access()->textShadow = s; |
| } |
| |
| void RenderStyle::setBoxShadow(PassRefPtr<ShadowList> s) |
| { |
| rareNonInheritedData.access()->m_boxShadow = s; |
| } |
| |
| static RoundedRect::Radii calcRadiiFor(const BorderData& border, IntSize size) |
| { |
| return RoundedRect::Radii( |
| IntSize(valueForLength(border.topLeft().width(), size.width()), |
| valueForLength(border.topLeft().height(), size.height())), |
| IntSize(valueForLength(border.topRight().width(), size.width()), |
| valueForLength(border.topRight().height(), size.height())), |
| IntSize(valueForLength(border.bottomLeft().width(), size.width()), |
| valueForLength(border.bottomLeft().height(), size.height())), |
| IntSize(valueForLength(border.bottomRight().width(), size.width()), |
| valueForLength(border.bottomRight().height(), size.height()))); |
| } |
| |
| StyleImage* RenderStyle::listStyleImage() const { return rareInheritedData->listStyleImage.get(); } |
| void RenderStyle::setListStyleImage(PassRefPtr<StyleImage> v) |
| { |
| if (rareInheritedData->listStyleImage != v) |
| rareInheritedData.access()->listStyleImage = v; |
| } |
| |
| Color RenderStyle::color() const { return inherited->color; } |
| Color RenderStyle::visitedLinkColor() const { return inherited->visitedLinkColor; } |
| void RenderStyle::setColor(const Color& v) { SET_VAR(inherited, color, v); } |
| void RenderStyle::setVisitedLinkColor(const Color& v) { SET_VAR(inherited, visitedLinkColor, v); } |
| |
| short RenderStyle::horizontalBorderSpacing() const { return inherited->horizontal_border_spacing; } |
| short RenderStyle::verticalBorderSpacing() const { return inherited->vertical_border_spacing; } |
| void RenderStyle::setHorizontalBorderSpacing(short v) { SET_VAR(inherited, horizontal_border_spacing, v); } |
| void RenderStyle::setVerticalBorderSpacing(short v) { SET_VAR(inherited, vertical_border_spacing, v); } |
| |
| RoundedRect RenderStyle::getRoundedBorderFor(const LayoutRect& borderRect, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const |
| { |
| IntRect snappedBorderRect(pixelSnappedIntRect(borderRect)); |
| RoundedRect roundedRect(snappedBorderRect); |
| if (hasBorderRadius()) { |
| RoundedRect::Radii radii = calcRadiiFor(surround->border, snappedBorderRect.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(); |
| |
| 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, topWidth, bottomWidth, leftWidth, rightWidth, includeLogicalLeftEdge, includeLogicalRightEdge); |
| } |
| |
| RoundedRect RenderStyle::getRoundedInnerBorderFor(const LayoutRect& borderRect, |
| int topWidth, int bottomWidth, int leftWidth, int rightWidth, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const |
| { |
| LayoutRect innerRect(borderRect.x() + leftWidth, |
| borderRect.y() + topWidth, |
| borderRect.width() - leftWidth - rightWidth, |
| borderRect.height() - topWidth - bottomWidth); |
| |
| RoundedRect roundedRect(pixelSnappedIntRect(innerRect)); |
| |
| if (hasBorderRadius()) { |
| RoundedRect::Radii radii = getRoundedBorderFor(borderRect).radii(); |
| radii.shrink(topWidth, bottomWidth, leftWidth, rightWidth); |
| 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 RenderStyle::hasEntirelyFixedBackground() const |
| { |
| return allLayersAreFixed(backgroundLayers()); |
| } |
| |
| const CounterDirectiveMap* RenderStyle::counterDirectives() const |
| { |
| return rareNonInheritedData->m_counterDirectives.get(); |
| } |
| |
| CounterDirectiveMap& RenderStyle::accessCounterDirectives() |
| { |
| OwnPtr<CounterDirectiveMap>& map = rareNonInheritedData.access()->m_counterDirectives; |
| if (!map) |
| map = adoptPtr(new CounterDirectiveMap); |
| return *map; |
| } |
| |
| const CounterDirectives RenderStyle::getCounterDirectives(const AtomicString& identifier) const |
| { |
| if (const CounterDirectiveMap* directives = counterDirectives()) |
| return directives->get(identifier); |
| return CounterDirectives(); |
| } |
| |
| const AtomicString& RenderStyle::hyphenString() const |
| { |
| const AtomicString& hyphenationString = rareInheritedData.get()->hyphenationString; |
| if (!hyphenationString.isNull()) |
| return hyphenationString; |
| |
| // FIXME: This should depend on locale. |
| DEFINE_STATIC_LOCAL(AtomicString, hyphenMinusString, (&hyphenMinus, 1)); |
| DEFINE_STATIC_LOCAL(AtomicString, hyphenString, (&hyphen, 1)); |
| return font().primaryFontHasGlyphForCharacter(hyphen) ? hyphenString : hyphenMinusString; |
| } |
| |
| const AtomicString& RenderStyle::textEmphasisMarkString() const |
| { |
| switch (textEmphasisMark()) { |
| case TextEmphasisMarkNone: |
| return nullAtom; |
| case TextEmphasisMarkCustom: |
| return textEmphasisCustomMark(); |
| case TextEmphasisMarkDot: { |
| DEFINE_STATIC_LOCAL(AtomicString, filledDotString, (&bullet, 1)); |
| DEFINE_STATIC_LOCAL(AtomicString, openDotString, (&whiteBullet, 1)); |
| return textEmphasisFill() == TextEmphasisFillFilled ? filledDotString : openDotString; |
| } |
| case TextEmphasisMarkCircle: { |
| DEFINE_STATIC_LOCAL(AtomicString, filledCircleString, (&blackCircle, 1)); |
| DEFINE_STATIC_LOCAL(AtomicString, openCircleString, (&whiteCircle, 1)); |
| return textEmphasisFill() == TextEmphasisFillFilled ? filledCircleString : openCircleString; |
| } |
| case TextEmphasisMarkDoubleCircle: { |
| DEFINE_STATIC_LOCAL(AtomicString, filledDoubleCircleString, (&fisheye, 1)); |
| DEFINE_STATIC_LOCAL(AtomicString, openDoubleCircleString, (&bullseye, 1)); |
| return textEmphasisFill() == TextEmphasisFillFilled ? filledDoubleCircleString : openDoubleCircleString; |
| } |
| case TextEmphasisMarkTriangle: { |
| DEFINE_STATIC_LOCAL(AtomicString, filledTriangleString, (&blackUpPointingTriangle, 1)); |
| DEFINE_STATIC_LOCAL(AtomicString, openTriangleString, (&whiteUpPointingTriangle, 1)); |
| return textEmphasisFill() == TextEmphasisFillFilled ? filledTriangleString : openTriangleString; |
| } |
| case TextEmphasisMarkSesame: { |
| DEFINE_STATIC_LOCAL(AtomicString, filledSesameString, (&sesameDot, 1)); |
| DEFINE_STATIC_LOCAL(AtomicString, openSesameString, (&whiteSesameDot, 1)); |
| return textEmphasisFill() == TextEmphasisFillFilled ? filledSesameString : openSesameString; |
| } |
| case TextEmphasisMarkAuto: |
| ASSERT_NOT_REACHED(); |
| return nullAtom; |
| } |
| |
| ASSERT_NOT_REACHED(); |
| return nullAtom; |
| } |
| |
| CSSAnimationData& RenderStyle::accessAnimations() |
| { |
| if (!rareNonInheritedData.access()->m_animations) |
| rareNonInheritedData.access()->m_animations = CSSAnimationData::create(); |
| return *rareNonInheritedData->m_animations; |
| } |
| |
| CSSTransitionData& RenderStyle::accessTransitions() |
| { |
| if (!rareNonInheritedData.access()->m_transitions) |
| rareNonInheritedData.access()->m_transitions = CSSTransitionData::create(); |
| return *rareNonInheritedData->m_transitions; |
| } |
| |
| const Font& RenderStyle::font() const { return inherited->font; } |
| const FontMetrics& RenderStyle::fontMetrics() const { return inherited->font.fontMetrics(); } |
| const FontDescription& RenderStyle::fontDescription() const { return inherited->font.fontDescription(); } |
| float RenderStyle::specifiedFontSize() const { return fontDescription().specifiedSize(); } |
| float RenderStyle::computedFontSize() const { return fontDescription().computedSize(); } |
| int RenderStyle::fontSize() const { return fontDescription().computedPixelSize(); } |
| FontWeight RenderStyle::fontWeight() const { return fontDescription().weight(); } |
| FontStretch RenderStyle::fontStretch() const { return fontDescription().stretch(); } |
| |
| TextDecoration RenderStyle::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>& RenderStyle::appliedTextDecorations() const |
| { |
| if (!inherited_flags.m_textUnderline && !rareInheritedData->appliedTextDecorations) { |
| DEFINE_STATIC_LOCAL(Vector<AppliedTextDecoration>, empty, ()); |
| return empty; |
| } |
| if (inherited_flags.m_textUnderline) { |
| DEFINE_STATIC_LOCAL(Vector<AppliedTextDecoration>, underline, (1, AppliedTextDecoration(TextDecorationUnderline))); |
| return underline; |
| } |
| |
| return rareInheritedData->appliedTextDecorations->vector(); |
| } |
| |
| float RenderStyle::wordSpacing() const { return fontDescription().wordSpacing(); } |
| float RenderStyle::letterSpacing() const { return fontDescription().letterSpacing(); } |
| |
| bool RenderStyle::setFontDescription(const FontDescription& v) |
| { |
| if (inherited->font.fontDescription() != v) { |
| inherited.access()->font = Font(v); |
| return true; |
| } |
| return false; |
| } |
| |
| const Length& RenderStyle::specifiedLineHeight() const { return inherited->line_height; } |
| Length RenderStyle::lineHeight() const |
| { |
| const Length& lh = inherited->line_height; |
| // Unlike fontDescription().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. |
| float multiplier = textAutosizingMultiplier(); |
| if (multiplier > 1 && lh.isFixed()) |
| return Length(TextAutosizer::computeAutosizedFontSize(lh.value(), multiplier), Fixed); |
| |
| return lh; |
| } |
| |
| void RenderStyle::setLineHeight(const Length& specifiedLineHeight) { SET_VAR(inherited, line_height, specifiedLineHeight); } |
| |
| int RenderStyle::computedLineHeight() const |
| { |
| const Length& lh = lineHeight(); |
| |
| // Negative value means the line height is not set. Use the font's built-in spacing. |
| if (lh.isNegative()) |
| return fontMetrics().lineSpacing(); |
| |
| if (lh.isPercent()) |
| return minimumValueForLength(lh, fontSize()); |
| |
| return lh.value(); |
| } |
| |
| void RenderStyle::setWordSpacing(float wordSpacing) |
| { |
| FontSelector* currentFontSelector = font().fontSelector(); |
| FontDescription desc(fontDescription()); |
| desc.setWordSpacing(wordSpacing); |
| setFontDescription(desc); |
| font().update(currentFontSelector); |
| } |
| |
| void RenderStyle::setLetterSpacing(float letterSpacing) |
| { |
| FontSelector* currentFontSelector = font().fontSelector(); |
| FontDescription desc(fontDescription()); |
| desc.setLetterSpacing(letterSpacing); |
| setFontDescription(desc); |
| font().update(currentFontSelector); |
| } |
| |
| 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 = font().fontSelector(); |
| FontDescription desc(fontDescription()); |
| desc.setSpecifiedSize(size); |
| desc.setComputedSize(size); |
| |
| float multiplier = textAutosizingMultiplier(); |
| if (multiplier > 1) { |
| float autosizedFontSize = TextAutosizer::computeAutosizedFontSize(size, multiplier); |
| desc.setComputedSize(std::min(maximumAllowedFontSize, autosizedFontSize)); |
| } |
| |
| setFontDescription(desc); |
| font().update(currentFontSelector); |
| } |
| |
| void RenderStyle::setFontWeight(FontWeight weight) |
| { |
| FontSelector* currentFontSelector = font().fontSelector(); |
| FontDescription desc(fontDescription()); |
| desc.setWeight(weight); |
| setFontDescription(desc); |
| font().update(currentFontSelector); |
| } |
| |
| void RenderStyle::addAppliedTextDecoration(const AppliedTextDecoration& decoration) |
| { |
| RefPtr<AppliedTextDecorationList>& list = rareInheritedData.access()->appliedTextDecorations; |
| |
| if (!list) |
| list = AppliedTextDecorationList::create(); |
| else if (!list->hasOneRef()) |
| list = list->copy(); |
| |
| if (inherited_flags.m_textUnderline) { |
| inherited_flags.m_textUnderline = false; |
| list->append(AppliedTextDecoration(TextDecorationUnderline)); |
| } |
| |
| list->append(decoration); |
| } |
| |
| void RenderStyle::applyTextDecorations() |
| { |
| if (textDecoration() == TextDecorationNone) |
| return; |
| |
| TextDecorationStyle style = textDecorationStyle(); |
| StyleColor styleColor = visitedDependentDecorationStyleColor(); |
| |
| int decorations = textDecoration(); |
| |
| 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 (!rareInheritedData->appliedTextDecorations && underline.isSimpleUnderline()) |
| inherited_flags.m_textUnderline = true; |
| else |
| addAppliedTextDecoration(underline); |
| } |
| if (decorations & TextDecorationOverline) |
| addAppliedTextDecoration(AppliedTextDecoration(TextDecorationOverline, style, styleColor)); |
| if (decorations & TextDecorationLineThrough) |
| addAppliedTextDecoration(AppliedTextDecoration(TextDecorationLineThrough, style, styleColor)); |
| } |
| |
| void RenderStyle::clearAppliedTextDecorations() |
| { |
| inherited_flags.m_textUnderline = false; |
| |
| if (rareInheritedData->appliedTextDecorations) |
| rareInheritedData.access()->appliedTextDecorations = nullptr; |
| } |
| |
| void RenderStyle::setFontStretch(FontStretch stretch) |
| { |
| FontSelector* currentFontSelector = font().fontSelector(); |
| FontDescription desc(fontDescription()); |
| desc.setStretch(stretch); |
| setFontDescription(desc); |
| font().update(currentFontSelector); |
| } |
| |
| void RenderStyle::getShadowExtent(const ShadowList* shadowList, LayoutUnit &top, LayoutUnit &right, LayoutUnit &bottom, LayoutUnit &left) const |
| { |
| top = 0; |
| right = 0; |
| bottom = 0; |
| left = 0; |
| |
| size_t shadowCount = shadowList ? shadowList->shadows().size() : 0; |
| for (size_t i = 0; i < shadowCount; ++i) { |
| const ShadowData& shadow = shadowList->shadows()[i]; |
| if (shadow.style() == Inset) |
| continue; |
| float blurAndSpread = shadow.blur() + shadow.spread(); |
| |
| top = std::min<LayoutUnit>(top, shadow.y() - blurAndSpread); |
| right = std::max<LayoutUnit>(right, shadow.x() + blurAndSpread); |
| bottom = std::max<LayoutUnit>(bottom, shadow.y() + blurAndSpread); |
| left = std::min<LayoutUnit>(left, shadow.x() - blurAndSpread); |
| } |
| } |
| |
| LayoutBoxExtent RenderStyle::getShadowInsetExtent(const ShadowList* shadowList) const |
| { |
| LayoutUnit top = 0; |
| LayoutUnit right = 0; |
| LayoutUnit bottom = 0; |
| LayoutUnit left = 0; |
| |
| size_t shadowCount = shadowList ? shadowList->shadows().size() : 0; |
| for (size_t i = 0; i < shadowCount; ++i) { |
| const ShadowData& shadow = shadowList->shadows()[i]; |
| if (shadow.style() == Normal) |
| continue; |
| float blurAndSpread = shadow.blur() + shadow.spread(); |
| top = std::max<LayoutUnit>(top, shadow.y() + blurAndSpread); |
| right = std::min<LayoutUnit>(right, shadow.x() - blurAndSpread); |
| bottom = std::min<LayoutUnit>(bottom, shadow.y() - blurAndSpread); |
| left = std::max<LayoutUnit>(left, shadow.x() + blurAndSpread); |
| } |
| |
| return LayoutBoxExtent(top, right, bottom, left); |
| } |
| |
| void RenderStyle::getShadowHorizontalExtent(const ShadowList* shadowList, LayoutUnit &left, LayoutUnit &right) const |
| { |
| left = 0; |
| right = 0; |
| |
| size_t shadowCount = shadowList ? shadowList->shadows().size() : 0; |
| for (size_t i = 0; i < shadowCount; ++i) { |
| const ShadowData& shadow = shadowList->shadows()[i]; |
| if (shadow.style() == Inset) |
| continue; |
| float blurAndSpread = shadow.blur() + shadow.spread(); |
| |
| left = std::min<LayoutUnit>(left, shadow.x() - blurAndSpread); |
| right = std::max<LayoutUnit>(right, shadow.x() + blurAndSpread); |
| } |
| } |
| |
| void RenderStyle::getShadowVerticalExtent(const ShadowList* shadowList, LayoutUnit &top, LayoutUnit &bottom) const |
| { |
| top = 0; |
| bottom = 0; |
| |
| size_t shadowCount = shadowList ? shadowList->shadows().size() : 0; |
| for (size_t i = 0; i < shadowCount; ++i) { |
| const ShadowData& shadow = shadowList->shadows()[i]; |
| if (shadow.style() == Inset) |
| continue; |
| float blurAndSpread = shadow.blur() + shadow.spread(); |
| |
| top = std::min<LayoutUnit>(top, shadow.y() - blurAndSpread); |
| bottom = std::max<LayoutUnit>(bottom, shadow.y() + blurAndSpread); |
| } |
| } |
| |
| StyleColor RenderStyle::visitedDependentDecorationStyleColor() const |
| { |
| bool isVisited = insideLink() == InsideVisitedLink; |
| |
| StyleColor styleColor = isVisited ? visitedLinkTextDecorationColor() : textDecorationColor(); |
| |
| if (!styleColor.isCurrentColor()) |
| return styleColor; |
| |
| if (textStrokeWidth()) { |
| // Prefer stroke color if possible, but not if it's fully transparent. |
| StyleColor textStrokeStyleColor = isVisited ? visitedLinkTextStrokeColor() : textStrokeColor(); |
| if (!textStrokeStyleColor.isCurrentColor() && textStrokeStyleColor.color().alpha()) |
| return textStrokeStyleColor; |
| } |
| |
| return isVisited ? visitedLinkTextFillColor() : textFillColor(); |
| } |
| |
| Color RenderStyle::visitedDependentDecorationColor() const |
| { |
| bool isVisited = insideLink() == InsideVisitedLink; |
| return visitedDependentDecorationStyleColor().resolve(isVisited ? visitedLinkColor() : color()); |
| } |
| |
| Color RenderStyle::colorIncludingFallback(int colorProperty, bool visitedLink) const |
| { |
| StyleColor result(StyleColor::currentColor()); |
| EBorderStyle borderStyle = BNONE; |
| 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 CSSPropertyWebkitColumnRuleColor: |
| 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; |
| default: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| |
| if (!result.isCurrentColor()) |
| return result.color(); |
| |
| // FIXME: Treating styled borders with initial color differently causes problems |
| // See crbug.com/316559, crbug.com/276231 |
| if (!visitedLink && (borderStyle == INSET || borderStyle == OUTSET || borderStyle == RIDGE || borderStyle == GROOVE)) |
| return Color(238, 238, 238); |
| return visitedLink ? visitedLinkColor() : color(); |
| } |
| |
| Color RenderStyle::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& RenderStyle::borderBefore() const |
| { |
| switch (writingMode()) { |
| case TopToBottomWritingMode: |
| return borderTop(); |
| case BottomToTopWritingMode: |
| return borderBottom(); |
| case LeftToRightWritingMode: |
| return borderLeft(); |
| case RightToLeftWritingMode: |
| return borderRight(); |
| } |
| ASSERT_NOT_REACHED(); |
| return borderTop(); |
| } |
| |
| const BorderValue& RenderStyle::borderAfter() const |
| { |
| switch (writingMode()) { |
| case TopToBottomWritingMode: |
| return borderBottom(); |
| case BottomToTopWritingMode: |
| return borderTop(); |
| case LeftToRightWritingMode: |
| return borderRight(); |
| case RightToLeftWritingMode: |
| 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(); |
| } |
| |
| unsigned short RenderStyle::borderBeforeWidth() const |
| { |
| switch (writingMode()) { |
| case TopToBottomWritingMode: |
| return borderTopWidth(); |
| case BottomToTopWritingMode: |
| return borderBottomWidth(); |
| case LeftToRightWritingMode: |
| return borderLeftWidth(); |
| case RightToLeftWritingMode: |
| return borderRightWidth(); |
| } |
| ASSERT_NOT_REACHED(); |
| return borderTopWidth(); |
| } |
| |
| unsigned short RenderStyle::borderAfterWidth() const |
| { |
| switch (writingMode()) { |
| case TopToBottomWritingMode: |
| return borderBottomWidth(); |
| case BottomToTopWritingMode: |
| return borderTopWidth(); |
| case LeftToRightWritingMode: |
| return borderRightWidth(); |
| case RightToLeftWritingMode: |
| return borderLeftWidth(); |
| } |
| ASSERT_NOT_REACHED(); |
| return borderBottomWidth(); |
| } |
| |
| unsigned short RenderStyle::borderStartWidth() const |
| { |
| if (isHorizontalWritingMode()) |
| return isLeftToRightDirection() ? borderLeftWidth() : borderRightWidth(); |
| return isLeftToRightDirection() ? borderTopWidth() : borderBottomWidth(); |
| } |
| |
| unsigned short RenderStyle::borderEndWidth() const |
| { |
| if (isHorizontalWritingMode()) |
| return isLeftToRightDirection() ? borderRightWidth() : borderLeftWidth(); |
| return isLeftToRightDirection() ? borderBottomWidth() : borderTopWidth(); |
| } |
| |
| void RenderStyle::setMarginStart(const Length& margin) |
| { |
| if (isHorizontalWritingMode()) { |
| if (isLeftToRightDirection()) |
| setMarginLeft(margin); |
| else |
| setMarginRight(margin); |
| } else { |
| if (isLeftToRightDirection()) |
| setMarginTop(margin); |
| else |
| setMarginBottom(margin); |
| } |
| } |
| |
| void RenderStyle::setMarginEnd(const Length& margin) |
| { |
| if (isHorizontalWritingMode()) { |
| if (isLeftToRightDirection()) |
| setMarginRight(margin); |
| else |
| setMarginLeft(margin); |
| } else { |
| if (isLeftToRightDirection()) |
| setMarginBottom(margin); |
| else |
| setMarginTop(margin); |
| } |
| } |
| |
| TextEmphasisMark RenderStyle::textEmphasisMark() const |
| { |
| TextEmphasisMark mark = static_cast<TextEmphasisMark>(rareInheritedData->textEmphasisMark); |
| if (mark != TextEmphasisMarkAuto) |
| return mark; |
| |
| if (isHorizontalWritingMode()) |
| return TextEmphasisMarkDot; |
| |
| return TextEmphasisMarkSesame; |
| } |
| |
| Color RenderStyle::initialTapHighlightColor() |
| { |
| return RenderTheme::tapHighlightColor(); |
| } |
| |
| LayoutBoxExtent RenderStyle::imageOutsets(const NinePieceImage& image) const |
| { |
| return LayoutBoxExtent(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 RenderStyle::setBorderImageSource(PassRefPtr<StyleImage> image) |
| { |
| if (surround->border.m_image.image() == image.get()) |
| return; |
| surround.access()->border.m_image.setImage(image); |
| } |
| |
| void RenderStyle::setBorderImageSlices(const LengthBox& slices) |
| { |
| if (surround->border.m_image.imageSlices() == slices) |
| return; |
| surround.access()->border.m_image.setImageSlices(slices); |
| } |
| |
| void RenderStyle::setBorderImageWidth(const BorderImageLengthBox& slices) |
| { |
| if (surround->border.m_image.borderSlices() == slices) |
| return; |
| surround.access()->border.m_image.setBorderSlices(slices); |
| } |
| |
| void RenderStyle::setBorderImageOutset(const BorderImageLengthBox& outset) |
| { |
| if (surround->border.m_image.outset() == outset) |
| return; |
| surround.access()->border.m_image.setOutset(outset); |
| } |
| |
| float calcBorderRadiiConstraintScaleFor(const FloatRect& rect, const FloatRoundedRect::Radii& radii) |
| { |
| // Constrain corner radii using CSS3 rules: |
| // http://www.w3.org/TR/css3-background/#the-border-radius |
| |
| float factor = 1; |
| float radiiSum; |
| |
| // top |
| radiiSum = radii.topLeft().width() + radii.topRight().width(); // Casts to avoid integer overflow. |
| if (radiiSum > rect.width()) |
| factor = std::min(rect.width() / radiiSum, factor); |
| |
| // bottom |
| radiiSum = radii.bottomLeft().width() + radii.bottomRight().width(); |
| if (radiiSum > rect.width()) |
| factor = std::min(rect.width() / radiiSum, factor); |
| |
| // left |
| radiiSum = radii.topLeft().height() + radii.bottomLeft().height(); |
| if (radiiSum > rect.height()) |
| factor = std::min(rect.height() / radiiSum, factor); |
| |
| // right |
| radiiSum = radii.topRight().height() + radii.bottomRight().height(); |
| if (radiiSum > rect.height()) |
| factor = std::min(rect.height() / radiiSum, factor); |
| |
| ASSERT(factor <= 1); |
| return factor; |
| } |
| |
| } // namespace blink |
