| /* |
| * 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 "CSSPropertyNames.h" |
| #include "CSSStyleSelector.h" |
| #include "CachedImage.h" |
| #include "CounterContent.h" |
| #include "FontSelector.h" |
| #include "RenderArena.h" |
| #include "RenderObject.h" |
| #include "StyleImage.h" |
| #include <wtf/StdLibExtras.h> |
| #include <algorithm> |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| inline RenderStyle* defaultStyle() |
| { |
| static RenderStyle* s_defaultStyle = RenderStyle::createDefaultStyle().releaseRef(); |
| return s_defaultStyle; |
| } |
| |
| PassRefPtr<RenderStyle> RenderStyle::create() |
| { |
| return adoptRef(new RenderStyle()); |
| } |
| |
| PassRefPtr<RenderStyle> RenderStyle::createDefaultStyle() |
| { |
| return adoptRef(new RenderStyle(true)); |
| } |
| |
| PassRefPtr<RenderStyle> 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<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(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<RenderStyle> pseudo) |
| { |
| if (!pseudo) |
| return 0; |
| |
| RenderStyle* result = pseudo.get(); |
| |
| if (!m_cachedPseudoStyles) |
| m_cachedPseudoStyles.set(new PseudoStyleCache); |
| |
| m_cachedPseudoStyles->append(pseudo); |
| |
| return result; |
| } |
| |
| 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; |
| } |
| |
| /* |
| compares two styles. The result gives an idea of the action that |
| needs to be taken when replacing the old style with a new one. |
| |
| CbLayout: The containing block of the object needs a relayout. |
| Layout: the RenderObject needs a relayout after the style change |
| Visible: The change is visible, but no relayout is needed |
| NonVisible: The object does need neither repaint nor relayout after |
| the change. |
| |
| ### TODO: |
| A lot can be optimised here based on the display type, lots of |
| optimisations are unimplemented, and currently result in the |
| worst case result causing a relayout of the containing block. |
| */ |
| StyleDifference RenderStyle::diff(const RenderStyle* other, unsigned& changedContextSensitiveProperties) const |
| { |
| changedContextSensitiveProperties = ContextSensitivePropertyNone; |
| |
| #if ENABLE(SVG) |
| if (m_svgStyle != other->m_svgStyle) |
| return m_svgStyle->diff(other->m_svgStyle.get()); |
| #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->marginTopCollapse != other->rareNonInheritedData->marginTopCollapse || |
| rareNonInheritedData->marginBottomCollapse != other->rareNonInheritedData->marginBottomCollapse || |
| 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->hyphenateCharacter != other->rareInheritedData->hyphenateCharacter) |
| 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 || |
| inherited_flags._htmlHacks != other->inherited_flags._htmlHacks || |
| 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) |
| 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 ((rareNonInheritedData->opacity == 1 && other->rareNonInheritedData->opacity < 1) || |
| (rareNonInheritedData->opacity < 1 && other->rareNonInheritedData->opacity == 1)) { |
| // FIXME: We should add an optimized form of layout that just recomputes visual overflow. |
| return StyleDifferenceLayout; |
| } |
| |
| // 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 will need to do a bit of work in RenderObject/Box::setStyle before we |
| // can stop doing a layout when relative positioned objects move. In particular, we'll need |
| // to update scrolling positions and figure out how to do a repaint properly of the updated layer. |
| //if (other->position() == RelativePosition) |
| // return RepaintLayer; |
| //else |
| 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) |
| 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(CachedImage* 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::clearCursorList() |
| { |
| if (rareInheritedData->cursorData) |
| rareInheritedData.access()->cursorData = 0; |
| } |
| |
| void RenderStyle::clearContent() |
| { |
| if (rareNonInheritedData->m_content) |
| rareNonInheritedData->m_content->clear(); |
| } |
| |
| void RenderStyle::setContent(PassRefPtr<StyleImage> image, bool add) |
| { |
| if (!image) |
| return; // The object is null. Nothing to do. Just bail. |
| |
| OwnPtr<ContentData>& content = rareNonInheritedData.access()->m_content; |
| ContentData* lastContent = content.get(); |
| while (lastContent && lastContent->next()) |
| lastContent = lastContent->next(); |
| |
| bool reuseContent = !add; |
| ContentData* newContentData; |
| if (reuseContent && content) { |
| content->clear(); |
| newContentData = content.release(); |
| } else |
| newContentData = new ContentData; |
| |
| if (lastContent && !reuseContent) |
| lastContent->setNext(newContentData); |
| else |
| content.set(newContentData); |
| |
| newContentData->setImage(image); |
| } |
| |
| void RenderStyle::setContent(PassRefPtr<StringImpl> s, bool add) |
| { |
| if (!s) |
| return; // The string is null. Nothing to do. Just bail. |
| |
| OwnPtr<ContentData>& content = rareNonInheritedData.access()->m_content; |
| ContentData* lastContent = content.get(); |
| while (lastContent && lastContent->next()) |
| lastContent = lastContent->next(); |
| |
| bool reuseContent = !add; |
| if (add && lastContent) { |
| if (lastContent->isText()) { |
| // We can augment the existing string and share this ContentData node. |
| String newStr = lastContent->text(); |
| newStr.append(s.get()); |
| lastContent->setText(newStr.impl()); |
| return; |
| } |
| } |
| |
| ContentData* newContentData = 0; |
| if (reuseContent && content) { |
| content->clear(); |
| newContentData = content.release(); |
| } else |
| newContentData = new ContentData; |
| |
| if (lastContent && !reuseContent) |
| lastContent->setNext(newContentData); |
| else |
| content.set(newContentData); |
| |
| newContentData->setText(s); |
| } |
| |
| void RenderStyle::setContent(CounterContent* c, bool add) |
| { |
| if (!c) |
| return; |
| |
| OwnPtr<ContentData>& content = rareNonInheritedData.access()->m_content; |
| ContentData* lastContent = content.get(); |
| while (lastContent && lastContent->next()) |
| lastContent = lastContent->next(); |
| |
| bool reuseContent = !add; |
| ContentData* newContentData = 0; |
| if (reuseContent && content) { |
| content->clear(); |
| newContentData = content.release(); |
| } else |
| newContentData = new ContentData; |
| |
| if (lastContent && !reuseContent) |
| lastContent->setNext(newContentData); |
| else |
| content.set(newContentData); |
| |
| newContentData->setCounter(c); |
| } |
| |
| 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()); |
| } |
| } |
| |
| #if ENABLE(XBL) |
| void RenderStyle::addBindingURI(StringImpl* uri) |
| { |
| BindingURI* binding = new BindingURI(uri); |
| if (!bindingURIs()) |
| SET_VAR(rareNonInheritedData, bindingURI, binding) |
| else |
| for (BindingURI* b = bindingURIs(); b; b = b->next()) { |
| if (!b->next()) |
| b->setNext(binding); |
| } |
| } |
| #endif |
| |
| 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.release()); |
| rareData->m_boxShadow.set(shadowData); |
| } |
| |
| static void constrainCornerRadiiForRect(const IntRect& r, IntSize& topLeft, IntSize& topRight, IntSize& bottomLeft, IntSize& bottomRight) |
| { |
| // 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<unsigned>(topLeft.width()) + static_cast<unsigned>(topRight.width()); // Casts to avoid integer overflow. |
| if (radiiSum > static_cast<unsigned>(r.width())) |
| factor = min(static_cast<float>(r.width()) / radiiSum, factor); |
| |
| // bottom |
| radiiSum = static_cast<unsigned>(bottomLeft.width()) + static_cast<unsigned>(bottomRight.width()); |
| if (radiiSum > static_cast<unsigned>(r.width())) |
| factor = min(static_cast<float>(r.width()) / radiiSum, factor); |
| |
| // left |
| radiiSum = static_cast<unsigned>(topLeft.height()) + static_cast<unsigned>(bottomLeft.height()); |
| if (radiiSum > static_cast<unsigned>(r.height())) |
| factor = min(static_cast<float>(r.height()) / radiiSum, factor); |
| |
| // right |
| radiiSum = static_cast<unsigned>(topRight.height()) + static_cast<unsigned>(bottomRight.height()); |
| if (radiiSum > static_cast<unsigned>(r.height())) |
| factor = min(static_cast<float>(r.height()) / radiiSum, factor); |
| |
| // Scale all radii by f if necessary. |
| if (factor < 1) { |
| // If either radius on a corner becomes zero, reset both radii on that corner. |
| topLeft.scale(factor); |
| if (!topLeft.width() || !topLeft.height()) |
| topLeft = IntSize(); |
| topRight.scale(factor); |
| if (!topRight.width() || !topRight.height()) |
| topRight = IntSize(); |
| bottomLeft.scale(factor); |
| if (!bottomLeft.width() || !bottomLeft.height()) |
| bottomLeft = IntSize(); |
| bottomRight.scale(factor); |
| if (!bottomRight.width() || !bottomRight.height()) |
| bottomRight = IntSize(); |
| } |
| } |
| |
| void RenderStyle::getBorderRadiiForRect(const IntRect& r, IntSize& topLeft, IntSize& topRight, IntSize& bottomLeft, IntSize& bottomRight) const |
| { |
| topLeft = surround->border.topLeft(); |
| topRight = surround->border.topRight(); |
| |
| bottomLeft = surround->border.bottomLeft(); |
| bottomRight = surround->border.bottomRight(); |
| |
| constrainCornerRadiiForRect(r, topLeft, topRight, bottomLeft, bottomRight); |
| } |
| |
| void RenderStyle::getInnerBorderRadiiForRectWithBorderWidths(const IntRect& innerRect, unsigned short topWidth, unsigned short bottomWidth, unsigned short leftWidth, unsigned short rightWidth, IntSize& innerTopLeft, IntSize& innerTopRight, IntSize& innerBottomLeft, IntSize& innerBottomRight) const |
| { |
| innerTopLeft = surround->border.topLeft(); |
| innerTopRight = surround->border.topRight(); |
| innerBottomLeft = surround->border.bottomLeft(); |
| innerBottomRight = surround->border.bottomRight(); |
| |
| innerTopLeft.setWidth(max(0, innerTopLeft.width() - leftWidth)); |
| innerTopLeft.setHeight(max(0, innerTopLeft.height() - topWidth)); |
| |
| innerTopRight.setWidth(max(0, innerTopRight.width() - rightWidth)); |
| innerTopRight.setHeight(max(0, innerTopRight.height() - topWidth)); |
| |
| innerBottomLeft.setWidth(max(0, innerBottomLeft.width() - leftWidth)); |
| innerBottomLeft.setHeight(max(0, innerBottomLeft.height() - bottomWidth)); |
| |
| innerBottomRight.setWidth(max(0, innerBottomRight.width() - rightWidth)); |
| innerBottomRight.setHeight(max(0, innerBottomRight.height() - bottomWidth)); |
| |
| constrainCornerRadiiForRect(innerRect, innerTopLeft, innerTopRight, innerBottomLeft, innerBottomRight); |
| } |
| |
| const CounterDirectiveMap* RenderStyle::counterDirectives() const |
| { |
| return rareNonInheritedData->m_counterDirectives.get(); |
| } |
| |
| CounterDirectiveMap& RenderStyle::accessCounterDirectives() |
| { |
| OwnPtr<CounterDirectiveMap>& map = rareNonInheritedData.access()->m_counterDirectives; |
| if (!map) |
| map.set(new CounterDirectiveMap); |
| return *map.get(); |
| } |
| |
| const AtomicString& RenderStyle::hyphenString() const |
| { |
| ASSERT(hyphens() == HyphensAuto); |
| |
| const AtomicString& hyphenateCharacter = rareInheritedData.get()->hyphenateCharacter; |
| if (!hyphenateCharacter.isNull()) |
| return hyphenateCharacter; |
| |
| // FIXME: This should depend on locale. |
| DEFINE_STATIC_LOCAL(AtomicString, hyphenMinusString, (&hyphen, 1)); |
| return hyphenMinusString; |
| } |
| |
| #if ENABLE(DASHBOARD_SUPPORT) |
| const Vector<StyleDashboardRegion>& RenderStyle::initialDashboardRegions() |
| { |
| DEFINE_STATIC_LOCAL(Vector<StyleDashboardRegion>, emptyList, ()); |
| return emptyList; |
| } |
| |
| const Vector<StyleDashboardRegion>& RenderStyle::noneDashboardRegions() |
| { |
| DEFINE_STATIC_LOCAL(Vector<StyleDashboardRegion>, 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::getBoxShadowExtent(int &top, int &right, int &bottom, int &left) const |
| { |
| top = 0; |
| right = 0; |
| bottom = 0; |
| left = 0; |
| |
| for (const ShadowData* boxShadow = this->boxShadow(); boxShadow; boxShadow = boxShadow->next()) { |
| if (boxShadow->style() == Inset) |
| continue; |
| int blurAndSpread = boxShadow->blur() + boxShadow->spread(); |
| |
| top = min(top, boxShadow->y() - blurAndSpread); |
| right = max(right, boxShadow->x() + blurAndSpread); |
| bottom = max(bottom, boxShadow->y() + blurAndSpread); |
| left = min(left, boxShadow->x() - blurAndSpread); |
| } |
| } |
| |
| void RenderStyle::getBoxShadowHorizontalExtent(int &left, int &right) const |
| { |
| left = 0; |
| right = 0; |
| |
| for (const ShadowData* boxShadow = this->boxShadow(); boxShadow; boxShadow = boxShadow->next()) { |
| if (boxShadow->style() == Inset) |
| continue; |
| int blurAndSpread = boxShadow->blur() + boxShadow->spread(); |
| |
| left = min(left, boxShadow->x() - blurAndSpread); |
| right = max(right, boxShadow->x() + blurAndSpread); |
| } |
| } |
| |
| void RenderStyle::getBoxShadowVerticalExtent(int &top, int &bottom) const |
| { |
| top = 0; |
| bottom = 0; |
| |
| for (const ShadowData* boxShadow = this->boxShadow(); boxShadow; boxShadow = boxShadow->next()) { |
| if (boxShadow->style() == Inset) |
| continue; |
| int blurAndSpread = boxShadow->blur() + boxShadow->spread(); |
| |
| top = min(top, boxShadow->y() - blurAndSpread); |
| bottom = max(bottom, boxShadow->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 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()); |
| } |
| |
| } // namespace WebCore |
