/* * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org) * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * */ #include "config.h" #include "RenderStyle.h" #include "ContentData.h" #include "CursorList.h" #include "CSSPropertyNames.h" #include "CSSStyleSelector.h" #include "FontSelector.h" #include "QuotesData.h" #include "RenderArena.h" #include "RenderObject.h" #include "ScaleTransformOperation.h" #include "ShadowData.h" #include "StyleImage.h" #include #include using namespace std; namespace WebCore { inline RenderStyle* defaultStyle() { static RenderStyle* s_defaultStyle = RenderStyle::createDefaultStyle().releaseRef(); return s_defaultStyle; } PassRefPtr RenderStyle::create() { return adoptRef(new RenderStyle()); } PassRefPtr RenderStyle::createDefaultStyle() { return adoptRef(new RenderStyle(true)); } PassRefPtr RenderStyle::createAnonymousStyle(const RenderStyle* parentStyle) { RefPtr newStyle = RenderStyle::create(); newStyle->inheritFrom(parentStyle); newStyle->inheritUnicodeBidiFrom(parentStyle); return newStyle; } PassRefPtr RenderStyle::clone(const RenderStyle* other) { return adoptRef(new RenderStyle(*other)); } ALWAYS_INLINE RenderStyle::RenderStyle() : m_affectedByAttributeSelectors(false) , m_unique(false) , m_affectedByEmpty(false) , m_emptyState(false) , m_childrenAffectedByFirstChildRules(false) , m_childrenAffectedByLastChildRules(false) , m_childrenAffectedByDirectAdjacentRules(false) , m_childrenAffectedByForwardPositionalRules(false) , m_childrenAffectedByBackwardPositionalRules(false) , m_firstChildState(false) , m_lastChildState(false) , m_childIndex(0) , 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) #if ENABLE(SVG) , m_svgStyle(defaultStyle()->m_svgStyle) #endif { setBitDefaults(); // Would it be faster to copy this from the default style? } ALWAYS_INLINE RenderStyle::RenderStyle(bool) : m_affectedByAttributeSelectors(false) , m_unique(false) , m_affectedByEmpty(false) , m_emptyState(false) , m_childrenAffectedByFirstChildRules(false) , m_childrenAffectedByLastChildRules(false) , m_childrenAffectedByDirectAdjacentRules(false) , m_childrenAffectedByForwardPositionalRules(false) , m_childrenAffectedByBackwardPositionalRules(false) , m_firstChildState(false) , m_lastChildState(false) , m_childIndex(0) { setBitDefaults(); m_box.init(); visual.init(); m_background.init(); surround.init(); rareNonInheritedData.init(); rareNonInheritedData.access()->flexibleBox.init(); rareNonInheritedData.access()->marquee.init(); rareNonInheritedData.access()->m_multiCol.init(); rareNonInheritedData.access()->m_transform.init(); rareInheritedData.init(); inherited.init(); #if ENABLE(SVG) m_svgStyle.init(); #endif } ALWAYS_INLINE RenderStyle::RenderStyle(const RenderStyle& o) : RefCounted() , m_affectedByAttributeSelectors(false) , m_unique(false) , m_affectedByEmpty(false) , m_emptyState(false) , m_childrenAffectedByFirstChildRules(false) , m_childrenAffectedByLastChildRules(false) , m_childrenAffectedByDirectAdjacentRules(false) , m_childrenAffectedByForwardPositionalRules(false) , m_childrenAffectedByBackwardPositionalRules(false) , m_firstChildState(false) , m_lastChildState(false) , m_childIndex(0) , 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) #if ENABLE(SVG) , m_svgStyle(o.m_svgStyle) #endif , inherited_flags(o.inherited_flags) , noninherited_flags(o.noninherited_flags) { } void RenderStyle::inheritFrom(const RenderStyle* inheritParent) { rareInheritedData = inheritParent->rareInheritedData; inherited = inheritParent->inherited; inherited_flags = inheritParent->inherited_flags; #if ENABLE(SVG) if (m_svgStyle != inheritParent->m_svgStyle) m_svgStyle.access()->inheritFrom(inheritParent->m_svgStyle.get()); #endif } RenderStyle::~RenderStyle() { } 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 #if ENABLE(SVG) && m_svgStyle == o.m_svgStyle #endif ; } bool RenderStyle::isStyleAvailable() const { return this != CSSStyleSelector::styleNotYetAvailable(); } static inline int pseudoBit(PseudoId pseudo) { return 1 << (pseudo - 1); } bool RenderStyle::hasAnyPublicPseudoStyles() const { return PUBLIC_PSEUDOID_MASK & noninherited_flags._pseudoBits; } bool RenderStyle::hasPseudoStyle(PseudoId pseudo) const { ASSERT(pseudo > NOPSEUDO); ASSERT(pseudo < FIRST_INTERNAL_PSEUDOID); return pseudoBit(pseudo) & noninherited_flags._pseudoBits; } void RenderStyle::setHasPseudoStyle(PseudoId pseudo) { ASSERT(pseudo > NOPSEUDO); ASSERT(pseudo < FIRST_INTERNAL_PSEUDOID); noninherited_flags._pseudoBits |= pseudoBit(pseudo); } RenderStyle* RenderStyle::getCachedPseudoStyle(PseudoId pid) const { ASSERT(styleType() != VISITED_LINK); if (!m_cachedPseudoStyles || !m_cachedPseudoStyles->size()) return 0; if (styleType() != NOPSEUDO) { if (pid == VISITED_LINK) return m_cachedPseudoStyles->at(0)->styleType() == VISITED_LINK ? m_cachedPseudoStyles->at(0).get() : 0; 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 pseudo) { if (!pseudo) return 0; RenderStyle* result = pseudo.get(); if (!m_cachedPseudoStyles) m_cachedPseudoStyles.set(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 || #if ENABLE(SVG) m_svgStyle->inheritedNotEqual(other->m_svgStyle.get()) || #endif rareInheritedData != other->rareInheritedData; } static bool positionedObjectMoved(const LengthBox& a, const LengthBox& b) { // 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; // 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::diff(const RenderStyle* other, unsigned& changedContextSensitiveProperties) const { changedContextSensitiveProperties = ContextSensitivePropertyNone; #if ENABLE(SVG) StyleDifference svgChange = StyleDifferenceEqual; if (m_svgStyle != other->m_svgStyle) { svgChange = m_svgStyle->diff(other->m_svgStyle.get()); if (svgChange == StyleDifferenceLayout) return svgChange; } #endif 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 StyleDifferenceLayout; if (m_box->verticalAlign() != other->m_box->verticalAlign() || noninherited_flags._vertical_align != other->noninherited_flags._vertical_align) return StyleDifferenceLayout; if (m_box->boxSizing() != other->m_box->boxSizing()) return StyleDifferenceLayout; if (surround->margin != other->surround->margin) return StyleDifferenceLayout; if (surround->padding != other->surround->padding) return StyleDifferenceLayout; 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) return StyleDifferenceLayout; if (rareNonInheritedData->flexibleBox.get() != other->rareNonInheritedData->flexibleBox.get() && *rareNonInheritedData->flexibleBox.get() != *other->rareNonInheritedData->flexibleBox.get()) return StyleDifferenceLayout; // FIXME: We should add an optimized form of layout that just recomputes visual overflow. if (!rareNonInheritedData->shadowDataEquivalent(*other->rareNonInheritedData.get())) return StyleDifferenceLayout; if (!rareNonInheritedData->reflectionDataEquivalent(*other->rareNonInheritedData.get())) return StyleDifferenceLayout; if (rareNonInheritedData->m_multiCol.get() != other->rareNonInheritedData->m_multiCol.get() && *rareNonInheritedData->m_multiCol.get() != *other->rareNonInheritedData->m_multiCol.get()) return StyleDifferenceLayout; if (rareNonInheritedData->m_transform.get() != other->rareNonInheritedData->m_transform.get() && *rareNonInheritedData->m_transform.get() != *other->rareNonInheritedData->m_transform.get()) { #if USE(ACCELERATED_COMPOSITING) changedContextSensitiveProperties |= ContextSensitivePropertyTransform; // Don't return; keep looking for another change #else return StyleDifferenceLayout; #endif } #if !USE(ACCELERATED_COMPOSITING) if (rareNonInheritedData.get() != other->rareNonInheritedData.get()) { if (rareNonInheritedData->m_transformStyle3D != other->rareNonInheritedData->m_transformStyle3D || rareNonInheritedData->m_backfaceVisibility != other->rareNonInheritedData->m_backfaceVisibility || rareNonInheritedData->m_perspective != other->rareNonInheritedData->m_perspective || rareNonInheritedData->m_perspectiveOriginX != other->rareNonInheritedData->m_perspectiveOriginX || rareNonInheritedData->m_perspectiveOriginY != other->rareNonInheritedData->m_perspectiveOriginY) return StyleDifferenceLayout; } #endif #if ENABLE(DASHBOARD_SUPPORT) // If regions change, trigger a relayout to re-calc regions. if (rareNonInheritedData->m_dashboardRegions != other->rareNonInheritedData->m_dashboardRegions) return StyleDifferenceLayout; #endif } if (rareInheritedData.get() != other->rareInheritedData.get()) { if (rareInheritedData->highlight != other->rareInheritedData->highlight || rareInheritedData->indent != other->rareInheritedData->indent || rareInheritedData->m_effectiveZoom != other->rareInheritedData->m_effectiveZoom || rareInheritedData->textSizeAdjust != other->rareInheritedData->textSizeAdjust || rareInheritedData->wordBreak != other->rareInheritedData->wordBreak || rareInheritedData->wordWrap != other->rareInheritedData->wordWrap || rareInheritedData->nbspMode != other->rareInheritedData->nbspMode || rareInheritedData->khtmlLineBreak != other->rareInheritedData->khtmlLineBreak || 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->textEmphasisMark != other->rareInheritedData->textEmphasisMark || rareInheritedData->textEmphasisPosition != other->rareInheritedData->textEmphasisPosition || rareInheritedData->textEmphasisCustomMark != other->rareInheritedData->textEmphasisCustomMark || rareInheritedData->m_lineBoxContain != other->rareInheritedData->m_lineBoxContain) return StyleDifferenceLayout; if (!rareInheritedData->shadowDataEquivalent(*other->rareInheritedData.get())) return StyleDifferenceLayout; if (textStrokeWidth() != other->textStrokeWidth()) return StyleDifferenceLayout; } if (inherited->line_height != other->inherited->line_height || inherited->list_style_image != other->inherited->list_style_image || inherited->font != other->inherited->font || inherited->horizontal_border_spacing != other->inherited->horizontal_border_spacing || inherited->vertical_border_spacing != other->inherited->vertical_border_spacing || inherited_flags._box_direction != other->inherited_flags._box_direction || inherited_flags._visuallyOrdered != other->inherited_flags._visuallyOrdered || noninherited_flags._position != other->noninherited_flags._position || noninherited_flags._floating != other->noninherited_flags._floating || noninherited_flags._originalDisplay != other->noninherited_flags._originalDisplay) return StyleDifferenceLayout; if (((int)noninherited_flags._effectiveDisplay) >= TABLE) { 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._table_layout != other->noninherited_flags._table_layout) return StyleDifferenceLayout; // 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 StyleDifferenceLayout; } 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 StyleDifferenceLayout; } if (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 || noninherited_flags._clear != other->noninherited_flags._clear || noninherited_flags._unicodeBidi != other->noninherited_flags._unicodeBidi) return StyleDifferenceLayout; // Check block flow direction. if (inherited_flags.m_writingMode != other->inherited_flags.m_writingMode) return StyleDifferenceLayout; // Check text combine mode. if (rareNonInheritedData->m_textCombine != other->rareNonInheritedData->m_textCombine) return StyleDifferenceLayout; // Overflow returns a layout hint. if (noninherited_flags._overflowX != other->noninherited_flags._overflowX || noninherited_flags._overflowY != other->noninherited_flags._overflowY) return StyleDifferenceLayout; // If our border widths change, then we need to layout. Other changes to borders // only necessitate a repaint. if (borderLeftWidth() != other->borderLeftWidth() || borderTopWidth() != other->borderTopWidth() || borderBottomWidth() != other->borderBottomWidth() || borderRightWidth() != other->borderRightWidth()) return StyleDifferenceLayout; // 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 StyleDifferenceLayout; if (rareNonInheritedData->m_counterIncrement != other->rareNonInheritedData->m_counterIncrement || rareNonInheritedData->m_counterReset != other->rareNonInheritedData->m_counterReset) return StyleDifferenceLayout; if ((visibility() == COLLAPSE) != (other->visibility() == COLLAPSE)) return StyleDifferenceLayout; if ((rareNonInheritedData->opacity == 1 && other->rareNonInheritedData->opacity < 1) || (rareNonInheritedData->opacity < 1 && other->rareNonInheritedData->opacity == 1)) { // 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 StyleDifferenceLayout; } #if ENABLE(SVG) // SVGRenderStyle::diff() might have returned StyleDifferenceRepaint, eg. if fill changes. // If eg. the font-size changed at the same time, we're not allowed to return StyleDifferenceRepaint, // but have to return StyleDifferenceLayout, that's why this if branch comes after all branches // that are relevant for SVG and might return StyleDifferenceLayout. if (svgChange != StyleDifferenceEqual) return svgChange; #endif // Make sure these left/top/right/bottom checks stay below all layout checks and above // all visible checks. if (position() != StaticPosition) { if (surround->offset != other->surround->offset) { // Optimize for the case where a positioned layer is moving but not changing size. if (position() == AbsolutePosition && positionedObjectMoved(surround->offset, other->surround->offset)) return StyleDifferenceLayoutPositionedMovementOnly; // 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). return StyleDifferenceLayout; } else if (m_box->zIndex() != other->m_box->zIndex() || m_box->hasAutoZIndex() != other->m_box->hasAutoZIndex() || visual->clip != other->visual->clip || visual->hasClip != other->visual->hasClip) return StyleDifferenceRepaintLayer; } if (rareNonInheritedData->opacity != other->rareNonInheritedData->opacity) { #if USE(ACCELERATED_COMPOSITING) changedContextSensitiveProperties |= ContextSensitivePropertyOpacity; // Don't return; keep looking for another change. #else return StyleDifferenceRepaintLayer; #endif } if (rareNonInheritedData->m_mask != other->rareNonInheritedData->m_mask || rareNonInheritedData->m_maskBoxImage != other->rareNonInheritedData->m_maskBoxImage) return StyleDifferenceRepaintLayer; if (inherited->color != other->inherited->color || inherited_flags._visibility != other->inherited_flags._visibility || inherited_flags._text_decorations != other->inherited_flags._text_decorations || inherited_flags._force_backgrounds_to_white != other->inherited_flags._force_backgrounds_to_white || inherited_flags._insideLink != other->inherited_flags._insideLink || surround->border != other->surround->border || *m_background.get() != *other->m_background.get() || visual->textDecoration != other->visual->textDecoration || rareInheritedData->userModify != other->rareInheritedData->userModify || rareInheritedData->userSelect != other->rareInheritedData->userSelect || rareNonInheritedData->userDrag != other->rareNonInheritedData->userDrag || rareNonInheritedData->m_borderFit != other->rareNonInheritedData->m_borderFit || rareInheritedData->textFillColor != other->rareInheritedData->textFillColor || rareInheritedData->textStrokeColor != other->rareInheritedData->textStrokeColor || rareInheritedData->textEmphasisColor != other->rareInheritedData->textEmphasisColor || rareInheritedData->textEmphasisFill != other->rareInheritedData->textEmphasisFill) return StyleDifferenceRepaint; #if USE(ACCELERATED_COMPOSITING) if (rareNonInheritedData.get() != other->rareNonInheritedData.get()) { if (rareNonInheritedData->m_transformStyle3D != other->rareNonInheritedData->m_transformStyle3D || rareNonInheritedData->m_backfaceVisibility != other->rareNonInheritedData->m_backfaceVisibility || rareNonInheritedData->m_perspective != other->rareNonInheritedData->m_perspective || rareNonInheritedData->m_perspectiveOriginX != other->rareNonInheritedData->m_perspectiveOriginX || rareNonInheritedData->m_perspectiveOriginY != other->rareNonInheritedData->m_perspectiveOriginY) return StyleDifferenceRecompositeLayer; } #endif // Cursors are not checked, since they will be set appropriately in response to mouse events, // so they don't need to cause any repaint or layout. // Animations don't need to be checked either. We always set the new style on the RenderObject, so we will get a chance to fire off // the resulting transition properly. return StyleDifferenceEqual; } void RenderStyle::setClip(Length top, Length right, Length bottom, Length left) { StyleVisualData* data = visual.access(); data->clip.m_top = top; data->clip.m_right = right; data->clip.m_bottom = bottom; data->clip.m_left = left; } void RenderStyle::addCursor(PassRefPtr image, const IntPoint& hotSpot) { if (!rareInheritedData.access()->cursorData) rareInheritedData.access()->cursorData = CursorList::create(); rareInheritedData.access()->cursorData->append(CursorData(image, hotSpot)); } void RenderStyle::setCursorList(PassRefPtr other) { rareInheritedData.access()->cursorData = other; } void RenderStyle::setQuotes(PassRefPtr q) { if (*rareInheritedData->quotes.get() == *q.get()) return; rareInheritedData.access()->quotes = q; } void RenderStyle::clearCursorList() { if (rareInheritedData->cursorData) rareInheritedData.access()->cursorData = 0; } void RenderStyle::clearContent() { if (rareNonInheritedData->m_content) rareNonInheritedData->m_content->clear(); } ContentData* RenderStyle::prepareToSetContent(StringImpl* string, bool add) { OwnPtr& content = rareNonInheritedData.access()->m_content; ContentData* lastContent = content.get(); while (lastContent && lastContent->next()) lastContent = lastContent->next(); if (string && add && lastContent && lastContent->isText()) { // Augment the existing string and share the existing ContentData node. String newText = lastContent->text(); newText.append(string); lastContent->setText(newText.impl()); return 0; } bool reuseContent = !add; OwnPtr newContentData; if (reuseContent && content) { content->clear(); newContentData = content.release(); } else newContentData = adoptPtr(new ContentData); ContentData* result = newContentData.get(); if (lastContent && !reuseContent) lastContent->setNext(newContentData.release()); else content = newContentData.release(); return result; } void RenderStyle::setContent(PassRefPtr image, bool add) { if (!image) return; prepareToSetContent(0, add)->setImage(image); } void RenderStyle::setContent(PassRefPtr string, bool add) { if (!string) return; if (ContentData* data = prepareToSetContent(string.get(), add)) data->setText(string); } void RenderStyle::setContent(PassOwnPtr counter, bool add) { if (!counter) return; prepareToSetContent(0, add)->setCounter(counter); } void RenderStyle::setContent(QuoteType quote, bool add) { prepareToSetContent(0, add)->setQuote(quote); } void RenderStyle::applyTransform(TransformationMatrix& transform, const IntSize& borderBoxSize, ApplyTransformOrigin applyOrigin) const { // 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. bool applyTransformOrigin = false; unsigned s = rareNonInheritedData->m_transform->m_operations.operations().size(); unsigned i; if (applyOrigin == IncludeTransformOrigin) { for (i = 0; i < s; i++) { TransformOperation::OperationType type = rareNonInheritedData->m_transform->m_operations.operations()[i]->getOperationType(); if (type != TransformOperation::TRANSLATE_X && type != TransformOperation::TRANSLATE_Y && type != TransformOperation::TRANSLATE && type != TransformOperation::TRANSLATE_Z && type != TransformOperation::TRANSLATE_3D ) { applyTransformOrigin = true; break; } } } if (applyTransformOrigin) { transform.translate3d(transformOriginX().calcFloatValue(borderBoxSize.width()), transformOriginY().calcFloatValue(borderBoxSize.height()), transformOriginZ()); } for (i = 0; i < s; i++) rareNonInheritedData->m_transform->m_operations.operations()[i]->apply(transform, borderBoxSize); if (applyTransformOrigin) { transform.translate3d(-transformOriginX().calcFloatValue(borderBoxSize.width()), -transformOriginY().calcFloatValue(borderBoxSize.height()), -transformOriginZ()); } } void RenderStyle::setPageScaleTransform(float scale) { if (scale == 1) return; TransformOperations transform; transform.operations().append(ScaleTransformOperation::create(scale, scale, ScaleTransformOperation::SCALE)); setTransform(transform); setTransformOriginX(Length(0, Fixed)); setTransformOriginY(Length(0, Fixed)); } void RenderStyle::setTextShadow(ShadowData* val, bool add) { ASSERT(!val || (!val->spread() && val->style() == Normal)); StyleRareInheritedData* rareData = rareInheritedData.access(); if (!add) { delete rareData->textShadow; rareData->textShadow = val; return; } val->setNext(rareData->textShadow); rareData->textShadow = val; } void RenderStyle::setBoxShadow(ShadowData* shadowData, bool add) { StyleRareNonInheritedData* rareData = rareNonInheritedData.access(); if (!add) { rareData->m_boxShadow.set(shadowData); return; } shadowData->setNext(rareData->m_boxShadow.leakPtr()); rareData->m_boxShadow.set(shadowData); } static RoundedIntRect::Radii calcRadiiFor(const BorderData& border, int width, int height) { return RoundedIntRect::Radii(IntSize(border.topLeft().width().calcValue(width), border.topLeft().height().calcValue(height)), IntSize(border.topRight().width().calcValue(width), border.topRight().height().calcValue(height)), IntSize(border.bottomLeft().width().calcValue(width), border.bottomLeft().height().calcValue(height)), IntSize(border.bottomRight().width().calcValue(width), border.bottomRight().height().calcValue(height))); } static float calcConstraintScaleFor(const IntRect& rect, const RoundedIntRect::Radii& radii) { // Constrain corner radii using CSS3 rules: // http://www.w3.org/TR/css3-background/#the-border-radius float factor = 1; unsigned radiiSum; // top radiiSum = static_cast(radii.topLeft().width()) + static_cast(radii.topRight().width()); // Casts to avoid integer overflow. if (radiiSum > static_cast(rect.width())) factor = std::min(static_cast(rect.width()) / radiiSum, factor); // bottom radiiSum = static_cast(radii.bottomLeft().width()) + static_cast(radii.bottomRight().width()); if (radiiSum > static_cast(rect.width())) factor = std::min(static_cast(rect.width()) / radiiSum, factor); // left radiiSum = static_cast(radii.topLeft().height()) + static_cast(radii.bottomLeft().height()); if (radiiSum > static_cast(rect.height())) factor = std::min(static_cast(rect.height()) / radiiSum, factor); // right radiiSum = static_cast(radii.topRight().height()) + static_cast(radii.bottomRight().height()); if (radiiSum > static_cast(rect.height())) factor = std::min(static_cast(rect.height()) / radiiSum, factor); ASSERT(factor <= 1); return factor; } RoundedIntRect RenderStyle::getRoundedBorderFor(const IntRect& rect) const { RoundedIntRect::Radii radii = calcRadiiFor(surround->border, rect.width(), rect.height()); radii.scale(calcConstraintScaleFor(rect, radii)); return RoundedIntRect(rect, radii); } RoundedIntRect RenderStyle::getRoundedInnerBorderWithBorderWidths(const IntRect& innerRect, unsigned short topWidth, unsigned short bottomWidth, unsigned short leftWidth, unsigned short rightWidth) const { RoundedIntRect::Radii radii = calcRadiiFor(surround->border, innerRect.width(), innerRect.height()); radii.shrink(topWidth, bottomWidth, leftWidth, rightWidth); radii.scale(calcConstraintScaleFor(innerRect, radii)); return RoundedIntRect(innerRect, radii); } const CounterDirectiveMap* RenderStyle::counterDirectives() const { return rareNonInheritedData->m_counterDirectives.get(); } CounterDirectiveMap& RenderStyle::accessCounterDirectives() { OwnPtr& map = rareNonInheritedData.access()->m_counterDirectives; if (!map) map.set(new CounterDirectiveMap); return *map.get(); } const AtomicString& RenderStyle::hyphenString() const { ASSERT(hyphens() != HyphensNone); 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; } #if ENABLE(DASHBOARD_SUPPORT) const Vector& RenderStyle::initialDashboardRegions() { DEFINE_STATIC_LOCAL(Vector, emptyList, ()); return emptyList; } const Vector& RenderStyle::noneDashboardRegions() { DEFINE_STATIC_LOCAL(Vector, noneList, ()); static bool noneListInitialized = false; if (!noneListInitialized) { StyleDashboardRegion region; region.label = ""; region.offset.m_top = Length(); region.offset.m_right = Length(); region.offset.m_bottom = Length(); region.offset.m_left = Length(); region.type = StyleDashboardRegion::None; noneList.append(region); noneListInitialized = true; } return noneList; } #endif void RenderStyle::adjustAnimations() { AnimationList* animationList = rareNonInheritedData->m_animations.get(); if (!animationList) return; // Get rid of empty animations and anything beyond them for (size_t i = 0; i < animationList->size(); ++i) { if (animationList->animation(i)->isEmpty()) { animationList->resize(i); break; } } if (animationList->isEmpty()) { clearAnimations(); return; } // Repeat patterns into layers that don't have some properties set. animationList->fillUnsetProperties(); } void RenderStyle::adjustTransitions() { AnimationList* transitionList = rareNonInheritedData->m_transitions.get(); if (!transitionList) return; // Get rid of empty transitions and anything beyond them for (size_t i = 0; i < transitionList->size(); ++i) { if (transitionList->animation(i)->isEmpty()) { transitionList->resize(i); break; } } if (transitionList->isEmpty()) { clearTransitions(); return; } // Repeat patterns into layers that don't have some properties set. transitionList->fillUnsetProperties(); // Make sure there are no duplicate properties. This is an O(n^2) algorithm // but the lists tend to be very short, so it is probably ok for (size_t i = 0; i < transitionList->size(); ++i) { for (size_t j = i+1; j < transitionList->size(); ++j) { if (transitionList->animation(i)->property() == transitionList->animation(j)->property()) { // toss i transitionList->remove(i); j = i; } } } } AnimationList* RenderStyle::accessAnimations() { if (!rareNonInheritedData.access()->m_animations) rareNonInheritedData.access()->m_animations.set(new AnimationList()); return rareNonInheritedData->m_animations.get(); } AnimationList* RenderStyle::accessTransitions() { if (!rareNonInheritedData.access()->m_transitions) rareNonInheritedData.access()->m_transitions.set(new AnimationList()); return rareNonInheritedData->m_transitions.get(); } const Animation* RenderStyle::transitionForProperty(int property) const { if (transitions()) { for (size_t i = 0; i < transitions()->size(); ++i) { const Animation* p = transitions()->animation(i); if (p->property() == cAnimateAll || p->property() == property) { return p; } } } return 0; } void RenderStyle::setBlendedFontSize(int size) { FontSelector* currentFontSelector = font().fontSelector(); FontDescription desc(fontDescription()); desc.setSpecifiedSize(size); desc.setComputedSize(size); setFontDescription(desc); font().update(currentFontSelector); } void RenderStyle::getShadowExtent(const ShadowData* shadow, int &top, int &right, int &bottom, int &left) const { top = 0; right = 0; bottom = 0; left = 0; for ( ; shadow; shadow = shadow->next()) { if (shadow->style() == Inset) continue; int blurAndSpread = shadow->blur() + shadow->spread(); top = min(top, shadow->y() - blurAndSpread); right = max(right, shadow->x() + blurAndSpread); bottom = max(bottom, shadow->y() + blurAndSpread); left = min(left, shadow->x() - blurAndSpread); } } void RenderStyle::getShadowHorizontalExtent(const ShadowData* shadow, int &left, int &right) const { left = 0; right = 0; for ( ; shadow; shadow = shadow->next()) { if (shadow->style() == Inset) continue; int blurAndSpread = shadow->blur() + shadow->spread(); left = min(left, shadow->x() - blurAndSpread); right = max(right, shadow->x() + blurAndSpread); } } void RenderStyle::getShadowVerticalExtent(const ShadowData* shadow, int &top, int &bottom) const { top = 0; bottom = 0; for ( ; shadow; shadow = shadow->next()) { if (shadow->style() == Inset) continue; int blurAndSpread = shadow->blur() + shadow->spread(); top = min(top, shadow->y() - blurAndSpread); bottom = max(bottom, shadow->y() + blurAndSpread); } } static EBorderStyle borderStyleForColorProperty(const RenderStyle* style, int colorProperty) { EBorderStyle borderStyle; switch (colorProperty) { case CSSPropertyBorderLeftColor: borderStyle = style->borderLeftStyle(); break; case CSSPropertyBorderRightColor: borderStyle = style->borderRightStyle(); break; case CSSPropertyBorderTopColor: borderStyle = style->borderTopStyle(); break; case CSSPropertyBorderBottomColor: borderStyle = style->borderBottomStyle(); break; default: borderStyle = BNONE; break; } return borderStyle; } const Color RenderStyle::colorIncludingFallback(int colorProperty, EBorderStyle borderStyle) const { Color result; switch (colorProperty) { case CSSPropertyBackgroundColor: return backgroundColor(); // Background color doesn't fall back. case CSSPropertyBorderLeftColor: result = borderLeftColor(); borderStyle = borderLeftStyle(); break; case CSSPropertyBorderRightColor: result = borderRightColor(); borderStyle = borderRightStyle(); break; case CSSPropertyBorderTopColor: result = borderTopColor(); borderStyle = borderTopStyle(); break; case CSSPropertyBorderBottomColor: result = borderBottomColor(); borderStyle = borderBottomStyle(); break; case CSSPropertyColor: result = color(); break; case CSSPropertyOutlineColor: result = outlineColor(); break; case CSSPropertyWebkitColumnRuleColor: result = columnRuleColor(); break; case CSSPropertyWebkitTextEmphasisColor: result = textEmphasisColor(); break; case CSSPropertyWebkitTextFillColor: result = textFillColor(); break; case CSSPropertyWebkitTextStrokeColor: result = textStrokeColor(); break; default: ASSERT_NOT_REACHED(); break; } if (!result.isValid()) { if ((colorProperty == CSSPropertyBorderLeftColor || colorProperty == CSSPropertyBorderRightColor || colorProperty == CSSPropertyBorderTopColor || colorProperty == CSSPropertyBorderBottomColor) && (borderStyle == INSET || borderStyle == OUTSET || borderStyle == RIDGE || borderStyle == GROOVE)) result.setRGB(238, 238, 238); else result = color(); } return result; } const Color RenderStyle::visitedDependentColor(int colorProperty) const { EBorderStyle borderStyle = borderStyleForColorProperty(this, colorProperty); Color unvisitedColor = colorIncludingFallback(colorProperty, borderStyle); if (insideLink() != InsideVisitedLink) return unvisitedColor; RenderStyle* visitedStyle = getCachedPseudoStyle(VISITED_LINK); if (!visitedStyle) return unvisitedColor; Color visitedColor = visitedStyle->colorIncludingFallback(colorProperty, borderStyle); // 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()); } Length RenderStyle::logicalWidth() const { if (isHorizontalWritingMode()) return width(); return height(); } Length RenderStyle::logicalHeight() const { if (isHorizontalWritingMode()) return height(); return width(); } Length RenderStyle::logicalMinWidth() const { if (isHorizontalWritingMode()) return minWidth(); return minHeight(); } Length RenderStyle::logicalMaxWidth() const { if (isHorizontalWritingMode()) return maxWidth(); return maxHeight(); } Length RenderStyle::logicalMinHeight() const { if (isHorizontalWritingMode()) return minHeight(); return minWidth(); } Length RenderStyle::logicalMaxHeight() const { if (isHorizontalWritingMode()) return maxHeight(); return maxWidth(); } 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(); } Length RenderStyle::marginBefore() const { switch (writingMode()) { case TopToBottomWritingMode: return marginTop(); case BottomToTopWritingMode: return marginBottom(); case LeftToRightWritingMode: return marginLeft(); case RightToLeftWritingMode: return marginRight(); } ASSERT_NOT_REACHED(); return marginTop(); } Length RenderStyle::marginAfter() const { switch (writingMode()) { case TopToBottomWritingMode: return marginBottom(); case BottomToTopWritingMode: return marginTop(); case LeftToRightWritingMode: return marginRight(); case RightToLeftWritingMode: return marginLeft(); } ASSERT_NOT_REACHED(); return marginBottom(); } Length RenderStyle::marginBeforeUsing(const RenderStyle* otherStyle) const { switch (otherStyle->writingMode()) { case TopToBottomWritingMode: return marginTop(); case BottomToTopWritingMode: return marginBottom(); case LeftToRightWritingMode: return marginLeft(); case RightToLeftWritingMode: return marginRight(); } ASSERT_NOT_REACHED(); return marginTop(); } Length RenderStyle::marginAfterUsing(const RenderStyle* otherStyle) const { switch (otherStyle->writingMode()) { case TopToBottomWritingMode: return marginBottom(); case BottomToTopWritingMode: return marginTop(); case LeftToRightWritingMode: return marginRight(); case RightToLeftWritingMode: return marginLeft(); } ASSERT_NOT_REACHED(); return marginBottom(); } Length RenderStyle::marginStart() const { if (isHorizontalWritingMode()) return isLeftToRightDirection() ? marginLeft() : marginRight(); return isLeftToRightDirection() ? marginTop() : marginBottom(); } Length RenderStyle::marginEnd() const { if (isHorizontalWritingMode()) return isLeftToRightDirection() ? marginRight() : marginLeft(); return isLeftToRightDirection() ? marginBottom() : marginTop(); } Length RenderStyle::marginStartUsing(const RenderStyle* otherStyle) const { if (otherStyle->isHorizontalWritingMode()) return otherStyle->isLeftToRightDirection() ? marginLeft() : marginRight(); return otherStyle->isLeftToRightDirection() ? marginTop() : marginBottom(); } Length RenderStyle::marginEndUsing(const RenderStyle* otherStyle) const { if (otherStyle->isHorizontalWritingMode()) return otherStyle->isLeftToRightDirection() ? marginRight() : marginLeft(); return otherStyle->isLeftToRightDirection() ? marginBottom() : marginTop(); } void RenderStyle::setMarginStart(Length margin) { if (isHorizontalWritingMode()) { if (isLeftToRightDirection()) setMarginLeft(margin); else setMarginRight(margin); } else { if (isLeftToRightDirection()) setMarginTop(margin); else setMarginBottom(margin); } } void RenderStyle::setMarginEnd(Length margin) { if (isHorizontalWritingMode()) { if (isLeftToRightDirection()) setMarginRight(margin); else setMarginLeft(margin); } else { if (isLeftToRightDirection()) setMarginBottom(margin); else setMarginTop(margin); } } Length RenderStyle::paddingBefore() const { switch (writingMode()) { case TopToBottomWritingMode: return paddingTop(); case BottomToTopWritingMode: return paddingBottom(); case LeftToRightWritingMode: return paddingLeft(); case RightToLeftWritingMode: return paddingRight(); } ASSERT_NOT_REACHED(); return paddingTop(); } Length RenderStyle::paddingAfter() const { switch (writingMode()) { case TopToBottomWritingMode: return paddingBottom(); case BottomToTopWritingMode: return paddingTop(); case LeftToRightWritingMode: return paddingRight(); case RightToLeftWritingMode: return paddingLeft(); } ASSERT_NOT_REACHED(); return paddingBottom(); } Length RenderStyle::paddingStart() const { if (isHorizontalWritingMode()) return isLeftToRightDirection() ? paddingLeft() : paddingRight(); return isLeftToRightDirection() ? paddingTop() : paddingBottom(); } Length RenderStyle::paddingEnd() const { if (isHorizontalWritingMode()) return isLeftToRightDirection() ? paddingRight() : paddingLeft(); return isLeftToRightDirection() ? paddingBottom() : paddingTop(); } TextEmphasisMark RenderStyle::textEmphasisMark() const { TextEmphasisMark mark = static_cast(rareInheritedData->textEmphasisMark); if (mark != TextEmphasisMarkAuto) return mark; if (isHorizontalWritingMode()) return TextEmphasisMarkDot; return TextEmphasisMarkSesame; } } // namespace WebCore