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webkit / WebKit / 1cc0b973b68c8e7e5d40dcb3dfb5666927c98177 / . / Source / WebCore / css / StyleResolver.cpp
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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
* Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
* Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
* Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
* Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
* Copyright (C) Research In Motion Limited 2011. All rights reserved.
* Copyright (C) 2012 Google 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 "StyleResolver.h"
#include "Attribute.h"
#include "CSSBorderImage.h"
#include "CSSCalculationValue.h"
#include "CSSCursorImageValue.h"
#include "CSSFontFaceRule.h"
#include "CSSFontSelector.h"
#include "CSSImportRule.h"
#include "CSSLineBoxContainValue.h"
#include "CSSMediaRule.h"
#include "CSSPageRule.h"
#include "CSSParser.h"
#include "CSSPrimitiveValueMappings.h"
#include "CSSPropertyNames.h"
#include "CSSReflectValue.h"
#include "CSSRuleList.h"
#include "CSSSelector.h"
#include "CSSSelectorList.h"
#include "CSSStyleRule.h"
#include "CSSStyleSheet.h"
#include "CSSTimingFunctionValue.h"
#include "CSSValueList.h"
#if ENABLE(CSS_VARIABLES)
#include "CSSVariableValue.h"
#endif
#include "CachedImage.h"
#include "CalculationValue.h"
#include "ContentData.h"
#include "ContextFeatures.h"
#include "Counter.h"
#include "CounterContent.h"
#include "CursorList.h"
#include "DocumentStyleSheetCollection.h"
#include "ElementShadow.h"
#include "FontFeatureValue.h"
#include "FontValue.h"
#include "Frame.h"
#include "FrameSelection.h"
#include "FrameView.h"
#include "HTMLDocument.h"
#include "HTMLIFrameElement.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "HTMLOptionElement.h"
#include "HTMLProgressElement.h"
#include "HTMLStyleElement.h"
#include "HTMLTextAreaElement.h"
#include "InsertionPoint.h"
#include "InspectorInstrumentation.h"
#include "KeyframeList.h"
#include "LinkHash.h"
#include "LocaleToScriptMapping.h"
#include "MathMLNames.h"
#include "Matrix3DTransformOperation.h"
#include "MatrixTransformOperation.h"
#include "MediaList.h"
#include "MediaQueryEvaluator.h"
#include "NodeRenderStyle.h"
#include "NodeRenderingContext.h"
#include "Page.h"
#include "PageGroup.h"
#include "Pair.h"
#include "PerspectiveTransformOperation.h"
#include "QuotesData.h"
#include "Rect.h"
#include "RenderRegion.h"
#include "RenderScrollbar.h"
#include "RenderScrollbarTheme.h"
#include "RenderStyleConstants.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "RotateTransformOperation.h"
#include "RuleSet.h"
#include "SVGDocumentExtensions.h"
#include "SVGFontFaceElement.h"
#include "ScaleTransformOperation.h"
#include "SecurityOrigin.h"
#include "Settings.h"
#include "ShadowData.h"
#include "ShadowRoot.h"
#include "ShadowValue.h"
#include "SiblingTraversalStrategies.h"
#include "SkewTransformOperation.h"
#include "StyleBuilder.h"
#include "StyleCachedImage.h"
#include "StyleGeneratedImage.h"
#include "StylePendingImage.h"
#include "StyleRule.h"
#include "StyleRuleImport.h"
#include "StyleSheetContents.h"
#include "StyleSheetList.h"
#include "Text.h"
#include "TransformationMatrix.h"
#include "TranslateTransformOperation.h"
#include "UserAgentStyleSheets.h"
#include "ViewportStyleResolver.h"
#include "WebCoreMemoryInstrumentation.h"
#include "WebKitCSSKeyframeRule.h"
#include "WebKitCSSKeyframesRule.h"
#include "WebKitCSSRegionRule.h"
#include "WebKitCSSTransformValue.h"
#include "WebKitFontFamilyNames.h"
#include "XMLNames.h"
#include <wtf/MemoryInstrumentationHashMap.h>
#include <wtf/MemoryInstrumentationHashSet.h>
#include <wtf/MemoryInstrumentationVector.h>
#include <wtf/StdLibExtras.h>
#include <wtf/Vector.h>
#if ENABLE(CSS_FILTERS)
#include "FilterOperation.h"
#include "WebKitCSSFilterValue.h"
#endif
#if ENABLE(DASHBOARD_SUPPORT)
#include "DashboardRegion.h"
#endif
#if ENABLE(SVG)
#include "CachedSVGDocument.h"
#include "CachedSVGDocumentReference.h"
#include "SVGDocument.h"
#include "SVGElement.h"
#include "SVGNames.h"
#include "SVGURIReference.h"
#include "WebKitCSSSVGDocumentValue.h"
#endif
#if ENABLE(CSS_SHADERS)
#include "CustomFilterArrayParameter.h"
#include "CustomFilterConstants.h"
#include "CustomFilterNumberParameter.h"
#include "CustomFilterOperation.h"
#include "CustomFilterParameter.h"
#include "CustomFilterTransformParameter.h"
#include "StyleCachedShader.h"
#include "StyleCustomFilterProgram.h"
#include "StylePendingShader.h"
#include "StyleShader.h"
#include "WebKitCSSMixFunctionValue.h"
#include "WebKitCSSShaderValue.h"
#endif
#if ENABLE(CSS_IMAGE_SET)
#include "CSSImageSetValue.h"
#include "StyleCachedImageSet.h"
#endif
using namespace std;
namespace WTF {
template<> struct SequenceMemoryInstrumentationTraits<const WebCore::RuleData*> {
template <typename I> static void reportMemoryUsage(I, I, MemoryClassInfo&) { }
};
}
namespace WebCore {
using namespace HTMLNames;
#define HANDLE_INHERIT(prop, Prop) \
if (isInherit) { \
m_style->set##Prop(m_parentStyle->prop()); \
return; \
}
#define HANDLE_INHERIT_AND_INITIAL(prop, Prop) \
HANDLE_INHERIT(prop, Prop) \
if (isInitial) { \
m_style->set##Prop(RenderStyle::initial##Prop()); \
return; \
}
static RuleSet* defaultStyle;
static RuleSet* defaultQuirksStyle;
static RuleSet* defaultPrintStyle;
static RuleSet* defaultViewSourceStyle;
static StyleSheetContents* simpleDefaultStyleSheet;
static StyleSheetContents* defaultStyleSheet;
static StyleSheetContents* quirksStyleSheet;
static StyleSheetContents* svgStyleSheet;
static StyleSheetContents* mathMLStyleSheet;
static StyleSheetContents* mediaControlsStyleSheet;
static StyleSheetContents* fullscreenStyleSheet;
RenderStyle* StyleResolver::s_styleNotYetAvailable;
static void loadFullDefaultStyle();
static void loadSimpleDefaultStyle();
template <class ListType>
static void collectCSSOMWrappers(HashMap<StyleRule*, RefPtr<CSSStyleRule> >&, ListType*);
// FIXME: It would be nice to use some mechanism that guarantees this is in sync with the real UA stylesheet.
static const char* simpleUserAgentStyleSheet = "html,body,div{display:block}head{display:none}body{margin:8px}div:focus,span:focus{outline:auto 5px -webkit-focus-ring-color}a:-webkit-any-link{color:-webkit-link;text-decoration:underline}a:-webkit-any-link:active{color:-webkit-activelink}";
static inline bool elementCanUseSimpleDefaultStyle(Element* e)
{
return e->hasTagName(htmlTag) || e->hasTagName(headTag) || e->hasTagName(bodyTag) || e->hasTagName(divTag) || e->hasTagName(spanTag) || e->hasTagName(brTag) || e->hasTagName(aTag);
}
static const MediaQueryEvaluator& screenEval()
{
DEFINE_STATIC_LOCAL(const MediaQueryEvaluator, staticScreenEval, ("screen"));
return staticScreenEval;
}
static const MediaQueryEvaluator& printEval()
{
DEFINE_STATIC_LOCAL(const MediaQueryEvaluator, staticPrintEval, ("print"));
return staticPrintEval;
}
static StylePropertySet* leftToRightDeclaration()
{
DEFINE_STATIC_LOCAL(RefPtr<StylePropertySet>, leftToRightDecl, (StylePropertySet::create()));
if (leftToRightDecl->isEmpty())
leftToRightDecl->setProperty(CSSPropertyDirection, CSSValueLtr);
return leftToRightDecl.get();
}
static StylePropertySet* rightToLeftDeclaration()
{
DEFINE_STATIC_LOCAL(RefPtr<StylePropertySet>, rightToLeftDecl, (StylePropertySet::create()));
if (rightToLeftDecl->isEmpty())
rightToLeftDecl->setProperty(CSSPropertyDirection, CSSValueRtl);
return rightToLeftDecl.get();
}
StyleResolver::StyleResolver(Document* document, bool matchAuthorAndUserStyles)
: m_hasUAAppearance(false)
, m_backgroundData(BackgroundFillLayer)
, m_matchedPropertiesCacheAdditionsSinceLastSweep(0)
, m_matchedPropertiesCacheSweepTimer(this, &StyleResolver::sweepMatchedPropertiesCache)
, m_checker(document, !document->inQuirksMode())
, m_parentStyle(0)
, m_rootElementStyle(0)
, m_element(0)
, m_styledElement(0)
, m_regionForStyling(0)
, m_elementLinkState(NotInsideLink)
, m_parentNode(0)
, m_lineHeightValue(0)
, m_fontDirty(false)
, m_matchAuthorAndUserStyles(matchAuthorAndUserStyles)
, m_sameOriginOnly(false)
, m_distributedToInsertionPoint(false)
, m_fontSelector(CSSFontSelector::create(document))
#if ENABLE(CSS_DEVICE_ADAPTATION)
, m_viewportStyleResolver(ViewportStyleResolver::create(document))
#endif
, m_applyPropertyToRegularStyle(true)
, m_applyPropertyToVisitedLinkStyle(false)
, m_styleBuilder(StyleBuilder::sharedStyleBuilder())
#if ENABLE(CSS_SHADERS)
, m_hasPendingShaders(false)
#endif
, m_styleMap(this)
{
Element* root = document->documentElement();
if (!defaultStyle) {
if (!root || elementCanUseSimpleDefaultStyle(root))
loadSimpleDefaultStyle();
else
loadFullDefaultStyle();
}
// construct document root element default style. this is needed
// to evaluate media queries that contain relative constraints, like "screen and (max-width: 10em)"
// This is here instead of constructor, because when constructor is run,
// document doesn't have documentElement
// NOTE: this assumes that element that gets passed to styleForElement -call
// is always from the document that owns the style selector
FrameView* view = document->view();
if (view)
m_medium = adoptPtr(new MediaQueryEvaluator(view->mediaType()));
else
m_medium = adoptPtr(new MediaQueryEvaluator("all"));
if (root)
m_rootDefaultStyle = styleForElement(root, 0, DisallowStyleSharing, MatchOnlyUserAgentRules);
if (m_rootDefaultStyle && view)
m_medium = adoptPtr(new MediaQueryEvaluator(view->mediaType(), view->frame(), m_rootDefaultStyle.get()));
resetAuthorStyle();
DocumentStyleSheetCollection* styleSheetCollection = document->styleSheetCollection();
OwnPtr<RuleSet> tempUserStyle = RuleSet::create();
if (CSSStyleSheet* pageUserSheet = styleSheetCollection->pageUserSheet())
tempUserStyle->addRulesFromSheet(pageUserSheet->contents(), *m_medium, this);
collectRulesFromUserStyleSheets(styleSheetCollection->injectedUserStyleSheets(), *tempUserStyle);
collectRulesFromUserStyleSheets(styleSheetCollection->documentUserStyleSheets(), *tempUserStyle);
if (tempUserStyle->m_ruleCount > 0 || tempUserStyle->m_pageRules.size() > 0)
m_userStyle = tempUserStyle.release();
#if ENABLE(SVG_FONTS)
if (document->svgExtensions()) {
const HashSet<SVGFontFaceElement*>& svgFontFaceElements = document->svgExtensions()->svgFontFaceElements();
HashSet<SVGFontFaceElement*>::const_iterator end = svgFontFaceElements.end();
for (HashSet<SVGFontFaceElement*>::const_iterator it = svgFontFaceElements.begin(); it != end; ++it)
fontSelector()->addFontFaceRule((*it)->fontFaceRule());
}
#endif
appendAuthorStyleSheets(0, styleSheetCollection->activeAuthorStyleSheets());
}
void StyleResolver::collectRulesFromUserStyleSheets(const Vector<RefPtr<CSSStyleSheet> >& userSheets, RuleSet& userStyle)
{
for (unsigned i = 0; i < userSheets.size(); ++i) {
ASSERT(userSheets[i]->contents()->isUserStyleSheet());
userStyle.addRulesFromSheet(userSheets[i]->contents(), *m_medium, this);
}
}
static PassOwnPtr<RuleSet> makeRuleSet(const Vector<RuleFeature>& rules)
{
size_t size = rules.size();
if (!size)
return nullptr;
OwnPtr<RuleSet> ruleSet = RuleSet::create();
for (size_t i = 0; i < size; ++i)
ruleSet->addRule(rules[i].rule, rules[i].selectorIndex, rules[i].hasDocumentSecurityOrigin ? RuleHasDocumentSecurityOrigin : RuleHasNoSpecialState);
ruleSet->shrinkToFit();
return ruleSet.release();
}
void StyleResolver::resetAuthorStyle()
{
m_authorStyle = RuleSet::create();
m_authorStyle->disableAutoShrinkToFit();
}
void StyleResolver::appendAuthorStyleSheets(unsigned firstNew, const Vector<RefPtr<CSSStyleSheet> >& styleSheets)
{
// This handles sheets added to the end of the stylesheet list only. In other cases the style resolver
// needs to be reconstructed. To handle insertions too the rule order numbers would need to be updated.
unsigned size = styleSheets.size();
for (unsigned i = firstNew; i < size; ++i) {
CSSStyleSheet* cssSheet = styleSheets[i].get();
ASSERT(!cssSheet->disabled());
if (cssSheet->mediaQueries() && !m_medium->eval(cssSheet->mediaQueries(), this))
continue;
StyleSheetContents* sheet = cssSheet->contents();
#if ENABLE(STYLE_SCOPED) || ENABLE(SHADOW_DOM)
if (const ContainerNode* scope = StyleScopeResolver::scopeFor(cssSheet)) {
ensureScopeResolver()->ensureRuleSetFor(scope)->addRulesFromSheet(sheet, *m_medium, this, scope);
continue;
}
#endif
m_authorStyle->addRulesFromSheet(sheet, *m_medium, this);
if (!m_styleRuleToCSSOMWrapperMap.isEmpty())
collectCSSOMWrappers(m_styleRuleToCSSOMWrapperMap, cssSheet);
}
m_authorStyle->shrinkToFit();
collectFeatures();
if (document()->renderer() && document()->renderer()->style())
document()->renderer()->style()->font().update(fontSelector());
#if ENABLE(CSS_DEVICE_ADAPTATION)
viewportStyleResolver()->resolve();
#endif
}
void StyleResolver::pushParentElement(Element* parent)
{
const ContainerNode* parentsParent = parent->parentOrHostElement();
// We are not always invoked consistently. For example, script execution can cause us to enter
// style recalc in the middle of tree building. We may also be invoked from somewhere within the tree.
// Reset the stack in this case, or if we see a new root element.
// Otherwise just push the new parent.
if (!parentsParent || m_checker.parentStackIsEmpty())
m_checker.setupParentStack(parent);
else
m_checker.pushParent(parent);
// Note: We mustn't skip ShadowRoot nodes for the scope stack.
if (m_scopeResolver)
m_scopeResolver->push(parent, parent->parentOrHostNode());
}
void StyleResolver::popParentElement(Element* parent)
{
// Note that we may get invoked for some random elements in some wacky cases during style resolve.
// Pause maintaining the stack in this case.
if (m_checker.parentStackIsConsistent(parent))
m_checker.popParent();
if (m_scopeResolver)
m_scopeResolver->pop(parent);
}
void StyleResolver::pushParentShadowRoot(const ShadowRoot* shadowRoot)
{
ASSERT(shadowRoot->host());
if (m_scopeResolver)
m_scopeResolver->push(shadowRoot, shadowRoot->host());
}
void StyleResolver::popParentShadowRoot(const ShadowRoot* shadowRoot)
{
ASSERT(shadowRoot->host());
if (m_scopeResolver)
m_scopeResolver->pop(shadowRoot);
}
// This is a simplified style setting function for keyframe styles
void StyleResolver::addKeyframeStyle(PassRefPtr<StyleRuleKeyframes> rule)
{
AtomicString s(rule->name());
m_keyframesRuleMap.set(s.impl(), rule);
}
StyleResolver::~StyleResolver()
{
m_fontSelector->clearDocument();
#if ENABLE(CSS_DEVICE_ADAPTATION)
m_viewportStyleResolver->clearDocument();
#endif
}
void StyleResolver::sweepMatchedPropertiesCache(Timer<StyleResolver>*)
{
// Look for cache entries containing a style declaration with a single ref and remove them.
// This may happen when an element attribute mutation causes it to generate a new inlineStyle()
// or presentationAttributeStyle(), potentially leaving this cache with the last ref on the old one.
Vector<unsigned, 16> toRemove;
MatchedPropertiesCache::iterator it = m_matchedPropertiesCache.begin();
MatchedPropertiesCache::iterator end = m_matchedPropertiesCache.end();
for (; it != end; ++it) {
Vector<MatchedProperties>& matchedProperties = it->value.matchedProperties;
for (size_t i = 0; i < matchedProperties.size(); ++i) {
if (matchedProperties[i].properties->hasOneRef()) {
toRemove.append(it->key);
break;
}
}
}
for (size_t i = 0; i < toRemove.size(); ++i)
m_matchedPropertiesCache.remove(toRemove[i]);
m_matchedPropertiesCacheAdditionsSinceLastSweep = 0;
}
static StyleSheetContents* parseUASheet(const String& str)
{
StyleSheetContents* sheet = StyleSheetContents::create().leakRef(); // leak the sheet on purpose
sheet->parseString(str);
return sheet;
}
static StyleSheetContents* parseUASheet(const char* characters, unsigned size)
{
return parseUASheet(String(characters, size));
}
static void loadFullDefaultStyle()
{
if (simpleDefaultStyleSheet) {
ASSERT(defaultStyle);
ASSERT(defaultPrintStyle == defaultStyle);
delete defaultStyle;
simpleDefaultStyleSheet->deref();
defaultStyle = RuleSet::create().leakPtr();
defaultPrintStyle = RuleSet::create().leakPtr();
simpleDefaultStyleSheet = 0;
} else {
ASSERT(!defaultStyle);
defaultStyle = RuleSet::create().leakPtr();
defaultPrintStyle = RuleSet::create().leakPtr();
defaultQuirksStyle = RuleSet::create().leakPtr();
}
// Strict-mode rules.
String defaultRules = String(htmlUserAgentStyleSheet, sizeof(htmlUserAgentStyleSheet)) + RenderTheme::defaultTheme()->extraDefaultStyleSheet();
defaultStyleSheet = parseUASheet(defaultRules);
defaultStyle->addRulesFromSheet(defaultStyleSheet, screenEval());
defaultPrintStyle->addRulesFromSheet(defaultStyleSheet, printEval());
// Quirks-mode rules.
String quirksRules = String(quirksUserAgentStyleSheet, sizeof(quirksUserAgentStyleSheet)) + RenderTheme::defaultTheme()->extraQuirksStyleSheet();
quirksStyleSheet = parseUASheet(quirksRules);
defaultQuirksStyle->addRulesFromSheet(quirksStyleSheet, screenEval());
}
static void loadSimpleDefaultStyle()
{
ASSERT(!defaultStyle);
ASSERT(!simpleDefaultStyleSheet);
defaultStyle = RuleSet::create().leakPtr();
// There are no media-specific rules in the simple default style.
defaultPrintStyle = defaultStyle;
defaultQuirksStyle = RuleSet::create().leakPtr();
simpleDefaultStyleSheet = parseUASheet(simpleUserAgentStyleSheet, strlen(simpleUserAgentStyleSheet));
defaultStyle->addRulesFromSheet(simpleDefaultStyleSheet, screenEval());
// No need to initialize quirks sheet yet as there are no quirk rules for elements allowed in simple default style.
}
static void loadViewSourceStyle()
{
ASSERT(!defaultViewSourceStyle);
defaultViewSourceStyle = RuleSet::create().leakPtr();
defaultViewSourceStyle->addRulesFromSheet(parseUASheet(sourceUserAgentStyleSheet, sizeof(sourceUserAgentStyleSheet)), screenEval());
}
static void ensureDefaultStyleSheetsForElement(Element* element)
{
if (simpleDefaultStyleSheet && !elementCanUseSimpleDefaultStyle(element))
loadFullDefaultStyle();
#if ENABLE(SVG)
if (element->isSVGElement() && !svgStyleSheet) {
// SVG rules.
svgStyleSheet = parseUASheet(svgUserAgentStyleSheet, sizeof(svgUserAgentStyleSheet));
defaultStyle->addRulesFromSheet(svgStyleSheet, screenEval());
defaultPrintStyle->addRulesFromSheet(svgStyleSheet, printEval());
}
#endif
#if ENABLE(MATHML)
if (element->isMathMLElement() && !mathMLStyleSheet) {
// MathML rules.
mathMLStyleSheet = parseUASheet(mathmlUserAgentStyleSheet, sizeof(mathmlUserAgentStyleSheet));
defaultStyle->addRulesFromSheet(mathMLStyleSheet, screenEval());
defaultPrintStyle->addRulesFromSheet(mathMLStyleSheet, printEval());
}
#endif
#if ENABLE(VIDEO)
if (!mediaControlsStyleSheet && (element->hasTagName(videoTag) || element->hasTagName(audioTag))) {
String mediaRules = String(mediaControlsUserAgentStyleSheet, sizeof(mediaControlsUserAgentStyleSheet)) + RenderTheme::themeForPage(element->document()->page())->extraMediaControlsStyleSheet();
mediaControlsStyleSheet = parseUASheet(mediaRules);
defaultStyle->addRulesFromSheet(mediaControlsStyleSheet, screenEval());
defaultPrintStyle->addRulesFromSheet(mediaControlsStyleSheet, printEval());
}
#endif
#if ENABLE(FULLSCREEN_API)
if (!fullscreenStyleSheet && element->document()->webkitIsFullScreen()) {
String fullscreenRules = String(fullscreenUserAgentStyleSheet, sizeof(fullscreenUserAgentStyleSheet)) + RenderTheme::defaultTheme()->extraFullScreenStyleSheet();
fullscreenStyleSheet = parseUASheet(fullscreenRules);
defaultStyle->addRulesFromSheet(fullscreenStyleSheet, screenEval());
defaultQuirksStyle->addRulesFromSheet(fullscreenStyleSheet, screenEval());
}
#endif
ASSERT(defaultStyle->features().idsInRules.isEmpty());
ASSERT(mathMLStyleSheet || defaultStyle->features().siblingRules.isEmpty());
}
void StyleResolver::addMatchedProperties(MatchResult& matchResult, const StylePropertySet* properties, StyleRule* rule, unsigned linkMatchType, bool inRegionRule)
{
matchResult.matchedProperties.grow(matchResult.matchedProperties.size() + 1);
MatchedProperties& newProperties = matchResult.matchedProperties.last();
newProperties.properties = const_cast<StylePropertySet*>(properties);
newProperties.linkMatchType = linkMatchType;
newProperties.isInRegionRule = inRegionRule;
matchResult.matchedRules.append(rule);
}
inline void StyleResolver::addElementStyleProperties(MatchResult& result, const StylePropertySet* propertySet, bool isCacheable)
{
if (!propertySet)
return;
result.ranges.lastAuthorRule = result.matchedProperties.size();
if (result.ranges.firstAuthorRule == -1)
result.ranges.firstAuthorRule = result.ranges.lastAuthorRule;
addMatchedProperties(result, propertySet);
if (!isCacheable)
result.isCacheable = false;
}
class MatchingUARulesScope {
public:
MatchingUARulesScope();
~MatchingUARulesScope();
static bool isMatchingUARules();
private:
static bool m_matchingUARules;
};
MatchingUARulesScope::MatchingUARulesScope()
{
ASSERT(!m_matchingUARules);
m_matchingUARules = true;
}
MatchingUARulesScope::~MatchingUARulesScope()
{
m_matchingUARules = false;
}
inline bool MatchingUARulesScope::isMatchingUARules()
{
return m_matchingUARules;
}
bool MatchingUARulesScope::m_matchingUARules = false;
void StyleResolver::collectMatchingRules(RuleSet* rules, int& firstRuleIndex, int& lastRuleIndex, const MatchOptions& options)
{
ASSERT(rules);
ASSERT(m_element);
const AtomicString& pseudoId = m_element->shadowPseudoId();
if (!pseudoId.isEmpty()) {
ASSERT(m_styledElement);
collectMatchingRulesForList(rules->shadowPseudoElementRules(pseudoId.impl()), firstRuleIndex, lastRuleIndex, options);
}
// Check whether other types of rules are applicable in the current tree scope. Criteria for this:
// a) it's a UA rule
// b) the tree scope allows author rules
// c) the rules comes from a scoped style sheet within the same tree scope
TreeScope* treeScope = m_element->treeScope();
if (!MatchingUARulesScope::isMatchingUARules()
&& !treeScope->applyAuthorStyles()
&& (!options.scope || options.scope->treeScope() != treeScope))
return;
// We need to collect the rules for id, class, tag, and everything else into a buffer and
// then sort the buffer.
if (m_element->hasID())
collectMatchingRulesForList(rules->idRules(m_element->idForStyleResolution().impl()), firstRuleIndex, lastRuleIndex, options);
if (m_styledElement && m_styledElement->hasClass()) {
for (size_t i = 0; i < m_styledElement->classNames().size(); ++i)
collectMatchingRulesForList(rules->classRules(m_styledElement->classNames()[i].impl()), firstRuleIndex, lastRuleIndex, options);
}
if (m_element->isLink())
collectMatchingRulesForList(rules->linkPseudoClassRules(), firstRuleIndex, lastRuleIndex, options);
if (m_checker.matchesFocusPseudoClass(m_element))
collectMatchingRulesForList(rules->focusPseudoClassRules(), firstRuleIndex, lastRuleIndex, options);
collectMatchingRulesForList(rules->tagRules(m_element->localName().impl()), firstRuleIndex, lastRuleIndex, options);
collectMatchingRulesForList(rules->universalRules(), firstRuleIndex, lastRuleIndex, options);
}
void StyleResolver::collectMatchingRulesForRegion(RuleSet* rules, int& firstRuleIndex, int& lastRuleIndex, const MatchOptions& options)
{
if (!m_regionForStyling)
return;
unsigned size = rules->m_regionSelectorsAndRuleSets.size();
for (unsigned i = 0; i < size; ++i) {
CSSSelector* regionSelector = rules->m_regionSelectorsAndRuleSets.at(i).selector;
if (checkRegionSelector(regionSelector, static_cast<Element*>(m_regionForStyling->node()))) {
RuleSet* regionRules = rules->m_regionSelectorsAndRuleSets.at(i).ruleSet.get();
ASSERT(regionRules);
collectMatchingRules(regionRules, firstRuleIndex, lastRuleIndex, options);
}
}
}
void StyleResolver::sortAndTransferMatchedRules(MatchResult& result)
{
if (m_matchedRules.isEmpty())
return;
sortMatchedRules();
if (m_checker.mode() == SelectorChecker::CollectingRules) {
if (!m_ruleList)
m_ruleList = StaticCSSRuleList::create();
for (unsigned i = 0; i < m_matchedRules.size(); ++i)
m_ruleList->rules().append(m_matchedRules[i]->rule()->createCSSOMWrapper());
return;
}
// Now transfer the set of matched rules over to our list of declarations.
// FIXME: This sucks, the inspector should get the style from the visited style itself.
bool swapVisitedUnvisited = InspectorInstrumentation::forcePseudoState(m_element, CSSSelector::PseudoVisited);
for (unsigned i = 0; i < m_matchedRules.size(); i++) {
if (m_style && m_matchedRules[i]->containsUncommonAttributeSelector())
m_style->setUnique();
unsigned linkMatchType = m_matchedRules[i]->linkMatchType();
if (swapVisitedUnvisited && linkMatchType && linkMatchType != SelectorChecker::MatchAll)
linkMatchType = (linkMatchType == SelectorChecker::MatchVisited) ? SelectorChecker::MatchLink : SelectorChecker::MatchVisited;
addMatchedProperties(result, m_matchedRules[i]->rule()->properties(), m_matchedRules[i]->rule(), linkMatchType, m_matchedRules[i]->isInRegionRule());
}
}
void StyleResolver::matchScopedAuthorRules(MatchResult& result, bool includeEmptyRules)
{
#if ENABLE(STYLE_SCOPED) || ENABLE(SHADOW_DOM)
if (!m_scopeResolver)
return;
matchHostRules(result, includeEmptyRules);
if (!m_scopeResolver->hasScopedStyles())
return;
// Match scoped author rules by traversing the scoped element stack (rebuild it if it got inconsistent).
if (!m_scopeResolver->ensureStackConsistency(m_element))
return;
bool applyAuthorStyles = m_element->treeScope()->applyAuthorStyles();
bool documentScope = true;
unsigned scopeSize = m_scopeResolver->stackSize();
for (unsigned i = 0; i < scopeSize; ++i) {
const StyleScopeResolver::StackFrame& frame = m_scopeResolver->stackFrameAt(i);
documentScope = documentScope && !frame.m_scope->isInShadowTree();
if (documentScope) {
if (!applyAuthorStyles)
continue;
} else {
if (!m_scopeResolver->matchesStyleBounds(frame))
continue;
}
MatchOptions options(includeEmptyRules, frame.m_scope);
collectMatchingRules(frame.m_ruleSet, result.ranges.firstAuthorRule, result.ranges.lastAuthorRule, options);
collectMatchingRulesForRegion(frame.m_ruleSet, result.ranges.firstAuthorRule, result.ranges.lastAuthorRule, options);
}
#else
UNUSED_PARAM(result);
UNUSED_PARAM(includeEmptyRules);
#endif
}
inline bool StyleResolver::styleSharingCandidateMatchesHostRules()
{
#if ENABLE(SHADOW_DOM)
return m_scopeResolver && m_scopeResolver->styleSharingCandidateMatchesHostRules(m_element);
#else
return false;
#endif
}
void StyleResolver::matchHostRules(MatchResult& result, bool includeEmptyRules)
{
#if ENABLE(SHADOW_DOM)
ASSERT(m_scopeResolver);
Vector<RuleSet*> matchedRules;
m_scopeResolver->matchHostRules(m_element, matchedRules);
if (matchedRules.isEmpty())
return;
MatchOptions options(includeEmptyRules);
options.scope = m_element;
for (unsigned i = matchedRules.size(); i > 0; --i)
collectMatchingRules(matchedRules.at(i-1), result.ranges.firstAuthorRule, result.ranges.lastAuthorRule, options);
#else
UNUSED_PARAM(result);
UNUSED_PARAM(includeEmptyRules);
#endif
}
void StyleResolver::matchAuthorRules(MatchResult& result, bool includeEmptyRules)
{
m_matchedRules.clear();
result.ranges.lastAuthorRule = result.matchedProperties.size() - 1;
if (!m_element)
return;
// Match global author rules.
MatchOptions options(includeEmptyRules);
collectMatchingRules(m_authorStyle.get(), result.ranges.firstAuthorRule, result.ranges.lastAuthorRule, options);
collectMatchingRulesForRegion(m_authorStyle.get(), result.ranges.firstAuthorRule, result.ranges.lastAuthorRule, options);
matchScopedAuthorRules(result, includeEmptyRules);
sortAndTransferMatchedRules(result);
}
void StyleResolver::matchUserRules(MatchResult& result, bool includeEmptyRules)
{
if (!m_userStyle)
return;
m_matchedRules.clear();
result.ranges.lastUserRule = result.matchedProperties.size() - 1;
collectMatchingRules(m_userStyle.get(), result.ranges.firstUserRule, result.ranges.lastUserRule, includeEmptyRules);
collectMatchingRulesForRegion(m_userStyle.get(), result.ranges.firstUserRule, result.ranges.lastUserRule, includeEmptyRules);
sortAndTransferMatchedRules(result);
}
void StyleResolver::matchUARules(MatchResult& result, RuleSet* rules)
{
m_matchedRules.clear();
result.ranges.lastUARule = result.matchedProperties.size() - 1;
collectMatchingRules(rules, result.ranges.firstUARule, result.ranges.lastUARule, false);
sortAndTransferMatchedRules(result);
}
void StyleResolver::collectMatchingRulesForList(const Vector<RuleData>* rules, int& firstRuleIndex, int& lastRuleIndex, const MatchOptions& options)
{
if (!rules)
return;
// In some cases we may end up looking up style for random elements in the middle of a recursive tree resolve.
// Ancestor identifier filter won't be up-to-date in that case and we can't use the fast path.
bool canUseFastReject = m_checker.parentStackIsConsistent(m_parentNode);
unsigned size = rules->size();
for (unsigned i = 0; i < size; ++i) {
const RuleData& ruleData = rules->at(i);
if (canUseFastReject && m_checker.fastRejectSelector<RuleData::maximumIdentifierCount>(ruleData.descendantSelectorIdentifierHashes()))
continue;
StyleRule* rule = ruleData.rule();
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willMatchRule(document(), rule);
if (checkSelector(ruleData, options.scope)) {
// If the rule has no properties to apply, then ignore it in the non-debug mode.
const StylePropertySet* properties = rule->properties();
if (!properties || (properties->isEmpty() && !options.includeEmptyRules)) {
InspectorInstrumentation::didMatchRule(cookie, false);
continue;
}
// FIXME: Exposing the non-standard getMatchedCSSRules API to web is the only reason this is needed.
if (m_sameOriginOnly && !ruleData.hasDocumentSecurityOrigin()) {
InspectorInstrumentation::didMatchRule(cookie, false);
continue;
}
// If we're matching normal rules, set a pseudo bit if
// we really just matched a pseudo-element.
if (m_dynamicPseudo != NOPSEUDO && m_pseudoStyle == NOPSEUDO) {
if (m_checker.mode() == SelectorChecker::CollectingRules) {
InspectorInstrumentation::didMatchRule(cookie, false);
continue;
}
if (m_dynamicPseudo < FIRST_INTERNAL_PSEUDOID)
m_style->setHasPseudoStyle(m_dynamicPseudo);
} else {
// Update our first/last rule indices in the matched rules array.
++lastRuleIndex;
if (firstRuleIndex == -1)
firstRuleIndex = lastRuleIndex;
// Add this rule to our list of matched rules.
addMatchedRule(&ruleData);
InspectorInstrumentation::didMatchRule(cookie, true);
continue;
}
}
InspectorInstrumentation::didMatchRule(cookie, false);
}
}
static inline bool compareRules(const RuleData* r1, const RuleData* r2)
{
unsigned specificity1 = r1->specificity();
unsigned specificity2 = r2->specificity();
return (specificity1 == specificity2) ? r1->position() < r2->position() : specificity1 < specificity2;
}
void StyleResolver::sortMatchedRules()
{
std::sort(m_matchedRules.begin(), m_matchedRules.end(), compareRules);
}
void StyleResolver::matchAllRules(MatchResult& result, bool includeSMILProperties)
{
matchUARules(result);
// Now we check user sheet rules.
if (m_matchAuthorAndUserStyles)
matchUserRules(result, false);
// Now check author rules, beginning first with presentational attributes mapped from HTML.
if (m_styledElement) {
addElementStyleProperties(result, m_styledElement->presentationAttributeStyle());
// Now we check additional mapped declarations.
// Tables and table cells share an additional mapped rule that must be applied
// after all attributes, since their mapped style depends on the values of multiple attributes.
addElementStyleProperties(result, m_styledElement->additionalPresentationAttributeStyle());
if (m_styledElement->isHTMLElement()) {
bool isAuto;
TextDirection textDirection = toHTMLElement(m_styledElement)->directionalityIfhasDirAutoAttribute(isAuto);
if (isAuto)
addMatchedProperties(result, textDirection == LTR ? leftToRightDeclaration() : rightToLeftDeclaration());
}
}
// Check the rules in author sheets next.
if (m_matchAuthorAndUserStyles)
matchAuthorRules(result, false);
// Now check our inline style attribute.
if (m_matchAuthorAndUserStyles && m_styledElement && m_styledElement->inlineStyle()) {
// Inline style is immutable as long as there is no CSSOM wrapper.
// FIXME: Media control shadow trees seem to have problems with caching.
bool isInlineStyleCacheable = !m_styledElement->inlineStyle()->isMutable() && !m_styledElement->isInShadowTree();
// FIXME: Constify.
addElementStyleProperties(result, m_styledElement->inlineStyle(), isInlineStyleCacheable);
}
#if ENABLE(SVG)
// Now check SMIL animation override style.
if (includeSMILProperties && m_matchAuthorAndUserStyles && m_styledElement && m_styledElement->isSVGElement())
addElementStyleProperties(result, static_cast<SVGElement*>(m_styledElement)->animatedSMILStyleProperties(), false /* isCacheable */);
#else
UNUSED_PARAM(includeSMILProperties);
#endif
}
bool StyleResolver::classNamesAffectedByRules(const SpaceSplitString& classNames) const
{
for (unsigned i = 0; i < classNames.size(); ++i) {
if (m_features.classesInRules.contains(classNames[i].impl()))
return true;
}
return false;
}
inline void StyleResolver::initElement(Element* e)
{
if (m_element != e) {
m_element = e;
m_styledElement = m_element && m_element->isStyledElement() ? static_cast<StyledElement*>(m_element) : 0;
m_elementLinkState = m_checker.determineLinkState(m_element);
if (e && e == e->document()->documentElement()) {
e->document()->setDirectionSetOnDocumentElement(false);
e->document()->setWritingModeSetOnDocumentElement(false);
}
}
}
inline bool shouldResetStyleInheritance(NodeRenderingContext& context)
{
if (context.resetStyleInheritance())
return true;
if (InsertionPoint* insertionPoint = context.insertionPoint())
return insertionPoint->resetStyleInheritance();
return false;
}
inline void StyleResolver::initForStyleResolve(Element* e, RenderStyle* parentStyle, PseudoId pseudoID)
{
m_pseudoStyle = pseudoID;
if (e) {
NodeRenderingContext context(e);
m_parentNode = context.parentNodeForRenderingAndStyle();
m_parentStyle = shouldResetStyleInheritance(context) ? 0 :
parentStyle ? parentStyle :
m_parentNode ? m_parentNode->renderStyle() : 0;
m_distributedToInsertionPoint = context.insertionPoint();
} else {
m_parentNode = 0;
m_parentStyle = parentStyle;
m_distributedToInsertionPoint = false;
}
Node* docElement = e ? e->document()->documentElement() : 0;
RenderStyle* docStyle = m_checker.document()->renderStyle();
m_rootElementStyle = docElement && e != docElement ? docElement->renderStyle() : docStyle;
m_style = 0;
m_pendingImageProperties.clear();
m_ruleList = 0;
m_fontDirty = false;
}
static const unsigned cStyleSearchThreshold = 10;
static const unsigned cStyleSearchLevelThreshold = 10;
Node* StyleResolver::locateCousinList(Element* parent, unsigned& visitedNodeCount) const
{
if (visitedNodeCount >= cStyleSearchThreshold * cStyleSearchLevelThreshold)
return 0;
if (!parent || !parent->isStyledElement())
return 0;
if (parent->hasScopedHTMLStyleChild())
return 0;
StyledElement* p = static_cast<StyledElement*>(parent);
if (p->inlineStyle())
return 0;
#if ENABLE(SVG)
if (p->isSVGElement() && static_cast<SVGElement*>(p)->animatedSMILStyleProperties())
return 0;
#endif
if (p->hasID() && m_features.idsInRules.contains(p->idForStyleResolution().impl()))
return 0;
RenderStyle* parentStyle = p->renderStyle();
unsigned subcount = 0;
Node* thisCousin = p;
Node* currentNode = p->previousSibling();
// Reserve the tries for this level. This effectively makes sure that the algorithm
// will never go deeper than cStyleSearchLevelThreshold levels into recursion.
visitedNodeCount += cStyleSearchThreshold;
while (thisCousin) {
while (currentNode) {
++subcount;
if (currentNode->renderStyle() == parentStyle && currentNode->lastChild()) {
// Adjust for unused reserved tries.
visitedNodeCount -= cStyleSearchThreshold - subcount;
return currentNode->lastChild();
}
if (subcount >= cStyleSearchThreshold)
return 0;
currentNode = currentNode->previousSibling();
}
currentNode = locateCousinList(thisCousin->parentElement(), visitedNodeCount);
thisCousin = currentNode;
}
return 0;
}
bool StyleResolver::styleSharingCandidateMatchesRuleSet(RuleSet* ruleSet)
{
if (!ruleSet)
return false;
m_matchedRules.clear();
int firstRuleIndex = -1, lastRuleIndex = -1;
m_checker.setMode(SelectorChecker::SharingRules);
collectMatchingRules(ruleSet, firstRuleIndex, lastRuleIndex, false);
m_checker.setMode(SelectorChecker::ResolvingStyle);
if (m_matchedRules.isEmpty())
return false;
m_matchedRules.clear();
return true;
}
bool StyleResolver::canShareStyleWithControl(StyledElement* element) const
{
HTMLInputElement* thisInputElement = element->toInputElement();
HTMLInputElement* otherInputElement = m_element->toInputElement();
if (!thisInputElement || !otherInputElement)
return false;
if (thisInputElement->attributeData() != otherInputElement->attributeData()) {
if (thisInputElement->fastGetAttribute(typeAttr) != otherInputElement->fastGetAttribute(typeAttr))
return false;
if (thisInputElement->fastGetAttribute(readonlyAttr) != otherInputElement->fastGetAttribute(readonlyAttr))
return false;
}
if (thisInputElement->isAutofilled() != otherInputElement->isAutofilled())
return false;
if (thisInputElement->shouldAppearChecked() != otherInputElement->shouldAppearChecked())
return false;
if (thisInputElement->isIndeterminate() != otherInputElement->isIndeterminate())
return false;
if (thisInputElement->required() != otherInputElement->required())
return false;
if (element->isEnabledFormControl() != m_element->isEnabledFormControl())
return false;
if (element->isDefaultButtonForForm() != m_element->isDefaultButtonForForm())
return false;
if (m_element->document()->containsValidityStyleRules()) {
bool willValidate = element->willValidate();
if (willValidate != m_element->willValidate())
return false;
if (willValidate && (element->isValidFormControlElement() != m_element->isValidFormControlElement()))
return false;
if (element->isInRange() != m_element->isInRange())
return false;
if (element->isOutOfRange() != m_element->isOutOfRange())
return false;
}
return true;
}
static inline bool elementHasDirectionAuto(Element* element)
{
// FIXME: This line is surprisingly hot, we may wish to inline hasDirectionAuto into StyleResolver.
return element->isHTMLElement() && toHTMLElement(element)->hasDirectionAuto();
}
bool StyleResolver::sharingCandidateHasIdenticalStyleAffectingAttributes(StyledElement* sharingCandidate) const
{
if (m_element->attributeData() == sharingCandidate->attributeData())
return true;
if (m_element->fastGetAttribute(XMLNames::langAttr) != sharingCandidate->fastGetAttribute(XMLNames::langAttr))
return false;
if (m_element->fastGetAttribute(langAttr) != sharingCandidate->fastGetAttribute(langAttr))
return false;
if (!m_elementAffectedByClassRules) {
if (sharingCandidate->hasClass() && classNamesAffectedByRules(sharingCandidate->classNames()))
return false;
} else if (sharingCandidate->hasClass()) {
#if ENABLE(SVG)
// SVG elements require a (slow!) getAttribute comparision because "class" is an animatable attribute for SVG.
if (m_element->isSVGElement()) {
if (m_element->getAttribute(classAttr) != sharingCandidate->getAttribute(classAttr))
return false;
} else {
#endif
if (m_element->classNames() != sharingCandidate->classNames())
return false;
#if ENABLE(SVG)
}
#endif
} else
return false;
if (m_styledElement->presentationAttributeStyle() != sharingCandidate->presentationAttributeStyle())
return false;
#if ENABLE(PROGRESS_ELEMENT)
if (m_element->hasTagName(progressTag)) {
if (static_cast<HTMLProgressElement*>(m_element)->isDeterminate() != static_cast<HTMLProgressElement*>(sharingCandidate)->isDeterminate())
return false;
}
#endif
return true;
}
bool StyleResolver::canShareStyleWithElement(StyledElement* element) const
{
RenderStyle* style = element->renderStyle();
if (!style)
return false;
if (style->unique())
return false;
if (element->tagQName() != m_element->tagQName())
return false;
if (element->inlineStyle())
return false;
if (element->needsStyleRecalc())
return false;
#if ENABLE(SVG)
if (element->isSVGElement() && static_cast<SVGElement*>(element)->animatedSMILStyleProperties())
return false;
#endif
if (element->isLink() != m_element->isLink())
return false;
if (element->hovered() != m_element->hovered())
return false;
if (element->active() != m_element->active())
return false;
if (element->focused() != m_element->focused())
return false;
if (element->shadowPseudoId() != m_element->shadowPseudoId())
return false;
if (element == element->document()->cssTarget())
return false;
if (!sharingCandidateHasIdenticalStyleAffectingAttributes(element))
return false;
if (element->additionalPresentationAttributeStyle() != m_styledElement->additionalPresentationAttributeStyle())
return false;
if (element->hasID() && m_features.idsInRules.contains(element->idForStyleResolution().impl()))
return false;
if (element->hasScopedHTMLStyleChild())
return false;
// FIXME: We should share style for option and optgroup whenever possible.
// Before doing so, we need to resolve issues in HTMLSelectElement::recalcListItems
// and RenderMenuList::setText. See also https://bugs.webkit.org/show_bug.cgi?id=88405
if (element->hasTagName(optionTag) || element->hasTagName(optgroupTag))
return false;
bool isControl = element->isFormControlElement();
if (isControl != m_element->isFormControlElement())
return false;
if (isControl && !canShareStyleWithControl(element))
return false;
if (style->transitions() || style->animations())
return false;
#if USE(ACCELERATED_COMPOSITING)
// Turn off style sharing for elements that can gain layers for reasons outside of the style system.
// See comments in RenderObject::setStyle().
if (element->hasTagName(iframeTag) || element->hasTagName(frameTag) || element->hasTagName(embedTag) || element->hasTagName(objectTag) || element->hasTagName(appletTag) || element->hasTagName(canvasTag)
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
// With proxying, the media elements are backed by a RenderEmbeddedObject.
|| element->hasTagName(videoTag) || element->hasTagName(audioTag)
#endif
)
return false;
#endif
if (elementHasDirectionAuto(element))
return false;
if (element->isLink() && m_elementLinkState != style->insideLink())
return false;
return true;
}
inline StyledElement* StyleResolver::findSiblingForStyleSharing(Node* node, unsigned& count) const
{
for (; node; node = node->previousSibling()) {
if (!node->isStyledElement())
continue;
if (canShareStyleWithElement(static_cast<StyledElement*>(node)))
break;
if (count++ == cStyleSearchThreshold)
return 0;
}
return static_cast<StyledElement*>(node);
}
static inline bool parentElementPreventsSharing(const Element* parentElement)
{
if (!parentElement)
return false;
return parentElement->childrenAffectedByPositionalRules()
|| parentElement->childrenAffectedByFirstChildRules()
|| parentElement->childrenAffectedByLastChildRules()
|| parentElement->childrenAffectedByDirectAdjacentRules();
}
RenderStyle* StyleResolver::locateSharedStyle()
{
if (!m_styledElement || !m_parentStyle)
return 0;
// If the element has inline style it is probably unique.
if (m_styledElement->inlineStyle())
return 0;
#if ENABLE(SVG)
if (m_styledElement->isSVGElement() && static_cast<SVGElement*>(m_styledElement)->animatedSMILStyleProperties())
return 0;
#endif
// Ids stop style sharing if they show up in the stylesheets.
if (m_styledElement->hasID() && m_features.idsInRules.contains(m_styledElement->idForStyleResolution().impl()))
return 0;
if (parentElementPreventsSharing(m_element->parentElement()))
return 0;
if (m_styledElement->hasScopedHTMLStyleChild())
return 0;
if (m_element == m_element->document()->cssTarget())
return 0;
if (elementHasDirectionAuto(m_element))
return 0;
// Cache whether m_element is affected by any known class selectors.
// FIXME: This shouldn't be a member variable. The style sharing code could be factored out of StyleResolver.
m_elementAffectedByClassRules = m_element && m_element->hasClass() && classNamesAffectedByRules(m_element->classNames());
// Check previous siblings and their cousins.
unsigned count = 0;
unsigned visitedNodeCount = 0;
StyledElement* shareElement = 0;
Node* cousinList = m_styledElement->previousSibling();
while (cousinList) {
shareElement = findSiblingForStyleSharing(cousinList, count);
if (shareElement)
break;
cousinList = locateCousinList(cousinList->parentElement(), visitedNodeCount);
}
// If we have exhausted all our budget or our cousins.
if (!shareElement)
return 0;
// Can't share if sibling rules apply. This is checked at the end as it should rarely fail.
if (styleSharingCandidateMatchesRuleSet(m_siblingRuleSet.get()))
return 0;
// Can't share if attribute rules apply.
if (styleSharingCandidateMatchesRuleSet(m_uncommonAttributeRuleSet.get()))
return 0;
// Can't share if @host @-rules apply.
if (styleSharingCandidateMatchesHostRules())
return 0;
// Tracking child index requires unique style for each node. This may get set by the sibling rule match above.
if (parentElementPreventsSharing(m_element->parentElement()))
return 0;
return shareElement->renderStyle();
}
void StyleResolver::matchUARules(MatchResult& result)
{
MatchingUARulesScope scope;
// First we match rules from the user agent sheet.
if (simpleDefaultStyleSheet)
result.isCacheable = false;
RuleSet* userAgentStyleSheet = m_medium->mediaTypeMatchSpecific("print")
? defaultPrintStyle : defaultStyle;
matchUARules(result, userAgentStyleSheet);
// In quirks mode, we match rules from the quirks user agent sheet.
if (!m_checker.strictParsing())
matchUARules(result, defaultQuirksStyle);
// If document uses view source styles (in view source mode or in xml viewer mode), then we match rules from the view source style sheet.
if (m_checker.document()->isViewSource()) {
if (!defaultViewSourceStyle)
loadViewSourceStyle();
matchUARules(result, defaultViewSourceStyle);
}
}
static void setStylesForPaginationMode(Pagination::Mode paginationMode, RenderStyle* style)
{
if (paginationMode == Pagination::Unpaginated)
return;
switch (paginationMode) {
case Pagination::LeftToRightPaginated:
style->setColumnAxis(HorizontalColumnAxis);
if (style->isHorizontalWritingMode())
style->setColumnProgression(style->isLeftToRightDirection() ? NormalColumnProgression : ReverseColumnProgression);
else
style->setColumnProgression(style->isFlippedBlocksWritingMode() ? ReverseColumnProgression : NormalColumnProgression);
break;
case Pagination::RightToLeftPaginated:
style->setColumnAxis(HorizontalColumnAxis);
if (style->isHorizontalWritingMode())
style->setColumnProgression(style->isLeftToRightDirection() ? ReverseColumnProgression : NormalColumnProgression);
else
style->setColumnProgression(style->isFlippedBlocksWritingMode() ? NormalColumnProgression : ReverseColumnProgression);
break;
case Pagination::TopToBottomPaginated:
style->setColumnAxis(VerticalColumnAxis);
if (style->isHorizontalWritingMode())
style->setColumnProgression(style->isFlippedBlocksWritingMode() ? ReverseColumnProgression : NormalColumnProgression);
else
style->setColumnProgression(style->isLeftToRightDirection() ? NormalColumnProgression : ReverseColumnProgression);
break;
case Pagination::BottomToTopPaginated:
style->setColumnAxis(VerticalColumnAxis);
if (style->isHorizontalWritingMode())
style->setColumnProgression(style->isFlippedBlocksWritingMode() ? NormalColumnProgression : ReverseColumnProgression);
else
style->setColumnProgression(style->isLeftToRightDirection() ? ReverseColumnProgression : NormalColumnProgression);
break;
case Pagination::Unpaginated:
ASSERT_NOT_REACHED();
break;
}
}
static void getFontAndGlyphOrientation(const RenderStyle* style, FontOrientation& fontOrientation, NonCJKGlyphOrientation& glyphOrientation)
{
if (style->isHorizontalWritingMode()) {
fontOrientation = Horizontal;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
}
switch (style->textOrientation()) {
case TextOrientationVerticalRight:
fontOrientation = Vertical;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
case TextOrientationUpright:
fontOrientation = Vertical;
glyphOrientation = NonCJKGlyphOrientationUpright;
return;
case TextOrientationSideways:
if (style->writingMode() == LeftToRightWritingMode) {
// FIXME: This should map to sideways-left, which is not supported yet.
fontOrientation = Vertical;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
}
fontOrientation = Horizontal;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
case TextOrientationSidewaysRight:
fontOrientation = Horizontal;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
}
}
PassRefPtr<RenderStyle> StyleResolver::styleForDocument(Document* document, CSSFontSelector* fontSelector)
{
Frame* frame = document->frame();
// HTML5 states that seamless iframes should replace default CSS values
// with values inherited from the containing iframe element. However,
// some values (such as the case of designMode = "on") still need to
// be set by this "document style".
RefPtr<RenderStyle> documentStyle = RenderStyle::create();
bool seamlessWithParent = document->shouldDisplaySeamlesslyWithParent();
if (seamlessWithParent) {
RenderStyle* iframeStyle = document->seamlessParentIFrame()->renderStyle();
if (iframeStyle)
documentStyle->inheritFrom(iframeStyle);
}
// FIXME: It's not clear which values below we want to override in the seamless case!
documentStyle->setDisplay(BLOCK);
if (!seamlessWithParent) {
documentStyle->setRTLOrdering(document->visuallyOrdered() ? VisualOrder : LogicalOrder);
documentStyle->setZoom(frame && !document->printing() ? frame->pageZoomFactor() : 1);
documentStyle->setPageScaleTransform(frame ? frame->frameScaleFactor() : 1);
documentStyle->setLocale(document->contentLanguage());
}
// This overrides any -webkit-user-modify inherited from the parent iframe.
documentStyle->setUserModify(document->inDesignMode() ? READ_WRITE : READ_ONLY);
Element* docElement = document->documentElement();
RenderObject* docElementRenderer = docElement ? docElement->renderer() : 0;
if (docElementRenderer) {
// Use the direction and writing-mode of the body to set the
// viewport's direction and writing-mode unless the property is set on the document element.
// If there is no body, then use the document element.
RenderObject* bodyRenderer = document->body() ? document->body()->renderer() : 0;
if (bodyRenderer && !document->writingModeSetOnDocumentElement())
documentStyle->setWritingMode(bodyRenderer->style()->writingMode());
else
documentStyle->setWritingMode(docElementRenderer->style()->writingMode());
if (bodyRenderer && !document->directionSetOnDocumentElement())
documentStyle->setDirection(bodyRenderer->style()->direction());
else
documentStyle->setDirection(docElementRenderer->style()->direction());
}
if (frame) {
if (FrameView* frameView = frame->view()) {
const Pagination& pagination = frameView->pagination();
if (pagination.mode != Pagination::Unpaginated) {
setStylesForPaginationMode(pagination.mode, documentStyle.get());
documentStyle->setColumnGap(pagination.gap);
if (RenderView* view = document->renderView()) {
if (view->hasColumns())
view->updateColumnInfoFromStyle(documentStyle.get());
}
}
}
}
// Seamless iframes want to inherit their font from their parent iframe, so early return before setting the font.
if (seamlessWithParent)
return documentStyle.release();
FontDescription fontDescription;
fontDescription.setScript(localeToScriptCodeForFontSelection(documentStyle->locale()));
if (Settings* settings = document->settings()) {
fontDescription.setUsePrinterFont(document->printing() || !settings->screenFontSubstitutionEnabled());
fontDescription.setRenderingMode(settings->fontRenderingMode());
const AtomicString& standardFont = settings->standardFontFamily(fontDescription.script());
if (!standardFont.isEmpty()) {
fontDescription.setGenericFamily(FontDescription::StandardFamily);
fontDescription.firstFamily().setFamily(standardFont);
fontDescription.firstFamily().appendFamily(0);
}
fontDescription.setKeywordSize(CSSValueMedium - CSSValueXxSmall + 1);
int size = StyleResolver::fontSizeForKeyword(document, CSSValueMedium, false);
fontDescription.setSpecifiedSize(size);
bool useSVGZoomRules = document->isSVGDocument();
fontDescription.setComputedSize(StyleResolver::getComputedSizeFromSpecifiedSize(document, documentStyle.get(), fontDescription.isAbsoluteSize(), size, useSVGZoomRules));
} else
fontDescription.setUsePrinterFont(document->printing());
FontOrientation fontOrientation;
NonCJKGlyphOrientation glyphOrientation;
getFontAndGlyphOrientation(documentStyle.get(), fontOrientation, glyphOrientation);
fontDescription.setOrientation(fontOrientation);
fontDescription.setNonCJKGlyphOrientation(glyphOrientation);
documentStyle->setFontDescription(fontDescription);
documentStyle->font().update(fontSelector);
return documentStyle.release();
}
static inline bool isAtShadowBoundary(const Element* element)
{
if (!element)
return false;
ContainerNode* parentNode = element->parentNode();
return parentNode && parentNode->isShadowRoot();
}
PassRefPtr<RenderStyle> StyleResolver::styleForElement(Element* element, RenderStyle* defaultParent,
StyleSharingBehavior sharingBehavior, RuleMatchingBehavior matchingBehavior, RenderRegion* regionForStyling)
{
// Once an element has a renderer, we don't try to destroy it, since otherwise the renderer
// will vanish if a style recalc happens during loading.
if (sharingBehavior == AllowStyleSharing && !element->document()->haveStylesheetsLoaded() && !element->renderer()) {
if (!s_styleNotYetAvailable) {
s_styleNotYetAvailable = RenderStyle::create().leakRef();
s_styleNotYetAvailable->setDisplay(NONE);
s_styleNotYetAvailable->font().update(m_fontSelector);
}
element->document()->setHasNodesWithPlaceholderStyle();
return s_styleNotYetAvailable;
}
initElement(element);
initForStyleResolve(element, defaultParent);
m_regionForStyling = regionForStyling;
if (sharingBehavior == AllowStyleSharing && !m_distributedToInsertionPoint) {
RenderStyle* sharedStyle = locateSharedStyle();
if (sharedStyle)
return sharedStyle;
}
m_style = RenderStyle::create();
RefPtr<RenderStyle> cloneForParent;
if (m_parentStyle)
m_style->inheritFrom(m_parentStyle, isAtShadowBoundary(element) ? RenderStyle::AtShadowBoundary : RenderStyle::NotAtShadowBoundary);
else {
// Make sure our fonts are initialized if we don't inherit them from our parent style.
if (Settings* settings = documentSettings()) {
initializeFontStyle(settings);
m_style->font().update(fontSelector());
} else
m_style->font().update(0);
cloneForParent = RenderStyle::clone(style());
m_parentStyle = cloneForParent.get();
}
// contenteditable attribute (implemented by -webkit-user-modify) should
// be propagated from shadow host to distributed node.
if (m_distributedToInsertionPoint) {
if (Element* parent = element->parentElement()) {
if (RenderStyle* styleOfShadowHost = parent->renderStyle())
m_style->setUserModify(styleOfShadowHost->userModify());
}
}
if (element->isLink()) {
m_style->setIsLink(true);
m_style->setInsideLink(m_elementLinkState);
}
ensureDefaultStyleSheetsForElement(element);
MatchResult matchResult;
if (matchingBehavior == MatchOnlyUserAgentRules)
matchUARules(matchResult);
else
matchAllRules(matchResult, matchingBehavior != MatchAllRulesExcludingSMIL);
applyMatchedProperties(matchResult, element);
// Clean up our style object's display and text decorations (among other fixups).
adjustRenderStyle(style(), m_parentStyle, element);
initElement(0); // Clear out for the next resolve.
if (cloneForParent)
m_parentStyle = 0;
// Now return the style.
return m_style.release();
}
PassRefPtr<RenderStyle> StyleResolver::styleForKeyframe(const RenderStyle* elementStyle, const StyleKeyframe* keyframe, KeyframeValue& keyframeValue)
{
MatchResult result;
if (keyframe->properties())
addMatchedProperties(result, keyframe->properties());
ASSERT(!m_style);
// Create the style
m_style = RenderStyle::clone(elementStyle);
m_lineHeightValue = 0;
// We don't need to bother with !important. Since there is only ever one
// decl, there's nothing to override. So just add the first properties.
bool inheritedOnly = false;
if (keyframe->properties())
applyMatchedProperties<HighPriorityProperties>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
// If our font got dirtied, go ahead and update it now.
updateFont();
// Line-height is set when we are sure we decided on the font-size
if (m_lineHeightValue)
applyProperty(CSSPropertyLineHeight, m_lineHeightValue);
// Now do rest of the properties.
if (keyframe->properties())
applyMatchedProperties<LowPriorityProperties>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
// If our font got dirtied by one of the non-essential font props,
// go ahead and update it a second time.
updateFont();
// Start loading resources referenced by this style.
loadPendingResources();
// Add all the animating properties to the keyframe.
if (const StylePropertySet* styleDeclaration = keyframe->properties()) {
unsigned propertyCount = styleDeclaration->propertyCount();
for (unsigned i = 0; i < propertyCount; ++i) {
CSSPropertyID property = styleDeclaration->propertyAt(i).id();
// Timing-function within keyframes is special, because it is not animated; it just
// describes the timing function between this keyframe and the next.
if (property != CSSPropertyWebkitAnimationTimingFunction)
keyframeValue.addProperty(property);
}
}
return m_style.release();
}
void StyleResolver::keyframeStylesForAnimation(Element* e, const RenderStyle* elementStyle, KeyframeList& list)
{
list.clear();
// Get the keyframesRule for this name
if (!e || list.animationName().isEmpty())
return;
m_keyframesRuleMap.checkConsistency();
KeyframesRuleMap::iterator it = m_keyframesRuleMap.find(list.animationName().impl());
if (it == m_keyframesRuleMap.end())
return;
const StyleRuleKeyframes* keyframesRule = it->value.get();
// Construct and populate the style for each keyframe
const Vector<RefPtr<StyleKeyframe> >& keyframes = keyframesRule->keyframes();
for (unsigned i = 0; i < keyframes.size(); ++i) {
// Apply the declaration to the style. This is a simplified version of the logic in styleForElement
initElement(e);
initForStyleResolve(e);
const StyleKeyframe* keyframe = keyframes[i].get();
KeyframeValue keyframeValue(0, 0);
keyframeValue.setStyle(styleForKeyframe(elementStyle, keyframe, keyframeValue));
// Add this keyframe style to all the indicated key times
Vector<float> keys;
keyframe->getKeys(keys);
for (size_t keyIndex = 0; keyIndex < keys.size(); ++keyIndex) {
keyframeValue.setKey(keys[keyIndex]);
list.insert(keyframeValue);
}
}
// If the 0% keyframe is missing, create it (but only if there is at least one other keyframe)
int initialListSize = list.size();
if (initialListSize > 0 && list[0].key()) {
static StyleKeyframe* zeroPercentKeyframe;
if (!zeroPercentKeyframe) {
zeroPercentKeyframe = StyleKeyframe::create().leakRef();
zeroPercentKeyframe->setKeyText("0%");
}
KeyframeValue keyframeValue(0, 0);
keyframeValue.setStyle(styleForKeyframe(elementStyle, zeroPercentKeyframe, keyframeValue));
list.insert(keyframeValue);
}
// If the 100% keyframe is missing, create it (but only if there is at least one other keyframe)
if (initialListSize > 0 && (list[list.size() - 1].key() != 1)) {
static StyleKeyframe* hundredPercentKeyframe;
if (!hundredPercentKeyframe) {
hundredPercentKeyframe = StyleKeyframe::create().leakRef();
hundredPercentKeyframe->setKeyText("100%");
}
KeyframeValue keyframeValue(1, 0);
keyframeValue.setStyle(styleForKeyframe(elementStyle, hundredPercentKeyframe, keyframeValue));
list.insert(keyframeValue);
}
}
PassRefPtr<RenderStyle> StyleResolver::pseudoStyleForElement(PseudoId pseudo, Element* e, RenderStyle* parentStyle)
{
ASSERT(m_parentStyle);
if (!e)
return 0;
initElement(e);
initForStyleResolve(e, parentStyle, pseudo);
m_style = RenderStyle::create();
m_style->inheritFrom(m_parentStyle);
// Since we don't use pseudo-elements in any of our quirk/print user agent rules, don't waste time walking
// those rules.
// Check UA, user and author rules.
MatchResult matchResult;
matchUARules(matchResult);
if (m_matchAuthorAndUserStyles) {
matchUserRules(matchResult, false);
matchAuthorRules(matchResult, false);
}
if (matchResult.matchedProperties.isEmpty())
return 0;
m_style->setStyleType(pseudo);
applyMatchedProperties(matchResult, e);
// Clean up our style object's display and text decorations (among other fixups).
adjustRenderStyle(style(), parentStyle, 0);
// Start loading resources referenced by this style.
loadPendingResources();
// Now return the style.
return m_style.release();
}
PassRefPtr<RenderStyle> StyleResolver::styleForPage(int pageIndex)
{
initForStyleResolve(m_checker.document()->documentElement()); // m_rootElementStyle will be set to the document style.
m_style = RenderStyle::create();
m_style->inheritFrom(m_rootElementStyle);
const bool isLeft = isLeftPage(pageIndex);
const bool isFirst = isFirstPage(pageIndex);
const String page = pageName(pageIndex);
MatchResult result;
matchPageRules(result, defaultPrintStyle, isLeft, isFirst, page);
matchPageRules(result, m_userStyle.get(), isLeft, isFirst, page);
// Only consider the global author RuleSet for @page rules, as per the HTML5 spec.
matchPageRules(result, m_authorStyle.get(), isLeft, isFirst, page);
m_lineHeightValue = 0;
bool inheritedOnly = false;
#if ENABLE(CSS_VARIABLES)
applyMatchedProperties<VariableDefinitions>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
#endif
applyMatchedProperties<HighPriorityProperties>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
// If our font got dirtied, go ahead and update it now.
updateFont();
// Line-height is set when we are sure we decided on the font-size.
if (m_lineHeightValue)
applyProperty(CSSPropertyLineHeight, m_lineHeightValue);
applyMatchedProperties<LowPriorityProperties>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
// Start loading resources referenced by this style.
loadPendingResources();
// Now return the style.
return m_style.release();
}
static void addIntrinsicMargins(RenderStyle* style)
{
// Intrinsic margin value.
const int intrinsicMargin = 2 * style->effectiveZoom();
// FIXME: Using width/height alone and not also dealing with min-width/max-width is flawed.
// FIXME: Using "quirk" to decide the margin wasn't set is kind of lame.
if (style->width().isIntrinsicOrAuto()) {
if (style->marginLeft().quirk())
style->setMarginLeft(Length(intrinsicMargin, Fixed));
if (style->marginRight().quirk())
style->setMarginRight(Length(intrinsicMargin, Fixed));
}
if (style->height().isAuto()) {
if (style->marginTop().quirk())
style->setMarginTop(Length(intrinsicMargin, Fixed));
if (style->marginBottom().quirk())
style->setMarginBottom(Length(intrinsicMargin, Fixed));
}
}
static EDisplay equivalentBlockDisplay(EDisplay display, bool isFloating, bool strictParsing)
{
switch (display) {
case BLOCK:
case TABLE:
case BOX:
case FLEX:
case GRID:
return display;
case LIST_ITEM:
// It is a WinIE bug that floated list items lose their bullets, so we'll emulate the quirk, but only in quirks mode.
if (!strictParsing && isFloating)
return BLOCK;
return display;
case INLINE_TABLE:
return TABLE;
case INLINE_BOX:
return BOX;
case INLINE_FLEX:
return FLEX;
case INLINE_GRID:
return GRID;
case INLINE:
case RUN_IN:
case COMPACT:
case INLINE_BLOCK:
case TABLE_ROW_GROUP:
case TABLE_HEADER_GROUP:
case TABLE_FOOTER_GROUP:
case TABLE_ROW:
case TABLE_COLUMN_GROUP:
case TABLE_COLUMN:
case TABLE_CELL:
case TABLE_CAPTION:
return BLOCK;
case NONE:
ASSERT_NOT_REACHED();
return NONE;
}
ASSERT_NOT_REACHED();
return BLOCK;
}
// CSS requires text-decoration to be reset at each DOM element for tables,
// inline blocks, inline tables, run-ins, shadow DOM crossings, floating elements,
// and absolute or relatively positioned elements.
static bool doesNotInheritTextDecoration(RenderStyle* style, Element* e)
{
return style->display() == TABLE || style->display() == INLINE_TABLE || style->display() == RUN_IN
|| style->display() == INLINE_BLOCK || style->display() == INLINE_BOX || isAtShadowBoundary(e)
|| style->isFloating() || style->hasOutOfFlowPosition();
}
static bool isDisplayFlexibleBox(EDisplay display)
{
return display == FLEX || display == INLINE_FLEX;
}
void StyleResolver::adjustRenderStyle(RenderStyle* style, RenderStyle* parentStyle, Element *e)
{
ASSERT(parentStyle);
// Cache our original display.
style->setOriginalDisplay(style->display());
if (style->display() != NONE) {
// If we have a <td> that specifies a float property, in quirks mode we just drop the float
// property.
// Sites also commonly use display:inline/block on <td>s and <table>s. In quirks mode we force
// these tags to retain their display types.
if (!m_checker.strictParsing() && e) {
if (e->hasTagName(tdTag)) {
style->setDisplay(TABLE_CELL);
style->setFloating(NoFloat);
} else if (e->hasTagName(tableTag))
style->setDisplay(style->isDisplayInlineType() ? INLINE_TABLE : TABLE);
}
if (e && (e->hasTagName(tdTag) || e->hasTagName(thTag))) {
if (style->whiteSpace() == KHTML_NOWRAP) {
// Figure out if we are really nowrapping or if we should just
// use normal instead. If the width of the cell is fixed, then
// we don't actually use NOWRAP.
if (style->width().isFixed())
style->setWhiteSpace(NORMAL);
else
style->setWhiteSpace(NOWRAP);
}
}
// Tables never support the -webkit-* values for text-align and will reset back to the default.
if (e && e->hasTagName(tableTag) && (style->textAlign() == WEBKIT_LEFT || style->textAlign() == WEBKIT_CENTER || style->textAlign() == WEBKIT_RIGHT))
style->setTextAlign(TASTART);
// Frames and framesets never honor position:relative or position:absolute. This is necessary to
// fix a crash where a site tries to position these objects. They also never honor display.
if (e && (e->hasTagName(frameTag) || e->hasTagName(framesetTag))) {
style->setPosition(StaticPosition);
style->setDisplay(BLOCK);
}
// Ruby text does not support float or position. This might change with evolution of the specification.
if (e && e->hasTagName(rtTag)) {
style->setPosition(StaticPosition);
style->setFloating(NoFloat);
}
// FIXME: We shouldn't be overriding start/-webkit-auto like this. Do it in html.css instead.
// Table headers with a text-align of -webkit-auto will change the text-align to center.
if (e && e->hasTagName(thTag) && style->textAlign() == TASTART)
style->setTextAlign(CENTER);
if (e && e->hasTagName(legendTag))
style->setDisplay(BLOCK);
// Absolute/fixed positioned elements, floating elements and the document element need block-like outside display.
if (style->hasOutOfFlowPosition() || style->isFloating() || (e && e->document()->documentElement() == e))
style->setDisplay(equivalentBlockDisplay(style->display(), style->isFloating(), m_checker.strictParsing()));
// FIXME: Don't support this mutation for pseudo styles like first-letter or first-line, since it's not completely
// clear how that should work.
if (style->display() == INLINE && style->styleType() == NOPSEUDO && style->writingMode() != parentStyle->writingMode())
style->setDisplay(INLINE_BLOCK);
// After performing the display mutation, check table rows. We do not honor position:relative on
// table rows or cells. This has been established in CSS2.1 (and caused a crash in containingBlock()
// on some sites).
if ((style->display() == TABLE_HEADER_GROUP || style->display() == TABLE_ROW_GROUP
|| style->display() == TABLE_FOOTER_GROUP || style->display() == TABLE_ROW)
&& style->position() == RelativePosition)
style->setPosition(StaticPosition);
// writing-mode does not apply to table row groups, table column groups, table rows, and table columns.
// FIXME: Table cells should be allowed to be perpendicular or flipped with respect to the table, though.
if (style->display() == TABLE_COLUMN || style->display() == TABLE_COLUMN_GROUP || style->display() == TABLE_FOOTER_GROUP
|| style->display() == TABLE_HEADER_GROUP || style->display() == TABLE_ROW || style->display() == TABLE_ROW_GROUP
|| style->display() == TABLE_CELL)
style->setWritingMode(parentStyle->writingMode());
// FIXME: Since we don't support block-flow on flexible boxes yet, disallow setting
// of block-flow to anything other than TopToBottomWritingMode.
// https://bugs.webkit.org/show_bug.cgi?id=46418 - Flexible box support.
if (style->writingMode() != TopToBottomWritingMode && (style->display() == BOX || style->display() == INLINE_BOX))
style->setWritingMode(TopToBottomWritingMode);
if (isDisplayFlexibleBox(parentStyle->display())) {
style->setFloating(NoFloat);
style->setDisplay(equivalentBlockDisplay(style->display(), style->isFloating(), m_checker.strictParsing()));
}
}
// Make sure our z-index value is only applied if the object is positioned.
if (style->position() == StaticPosition && !isDisplayFlexibleBox(parentStyle->display()))
style->setHasAutoZIndex();
// Auto z-index becomes 0 for the root element and transparent objects. This prevents
// cases where objects that should be blended as a single unit end up with a non-transparent
// object wedged in between them. Auto z-index also becomes 0 for objects that specify transforms/masks/reflections.
if (style->hasAutoZIndex() && ((e && e->document()->documentElement() == e)
|| style->opacity() < 1.0f
|| style->hasTransformRelatedProperty()
|| style->hasMask()
|| style->clipPath()
|| style->boxReflect()
|| style->hasFilter()
|| style->hasBlendMode()
|| style->position() == StickyPosition
|| (style->position() == FixedPosition && e && e->document()->page() && e->document()->page()->settings()->fixedPositionCreatesStackingContext())
#if ENABLE(ACCELERATED_OVERFLOW_SCROLLING)
// Touch overflow scrolling creates a stacking context.
|| ((style->overflowX() != OHIDDEN || style->overflowY() != OHIDDEN) && style->useTouchOverflowScrolling())
#endif
#if ENABLE(DIALOG_ELEMENT)
|| (e && e->isInTopLayer())
#endif
))
style->setZIndex(0);
// Textarea considers overflow visible as auto.
if (e && e->hasTagName(textareaTag)) {
style->setOverflowX(style->overflowX() == OVISIBLE ? OAUTO : style->overflowX());
style->setOverflowY(style->overflowY() == OVISIBLE ? OAUTO : style->overflowY());
}
if (doesNotInheritTextDecoration(style, e))
style->setTextDecorationsInEffect(style->textDecoration());
else
style->addToTextDecorationsInEffect(style->textDecoration());
// If either overflow value is not visible, change to auto.
if (style->overflowX() == OMARQUEE && style->overflowY() != OMARQUEE)
style->setOverflowY(OMARQUEE);
else if (style->overflowY() == OMARQUEE && style->overflowX() != OMARQUEE)
style->setOverflowX(OMARQUEE);
else if (style->overflowX() == OVISIBLE && style->overflowY() != OVISIBLE) {
// FIXME: Once we implement pagination controls, overflow-x should default to hidden
// if overflow-y is set to -webkit-paged-x or -webkit-page-y. For now, we'll let it
// default to auto so we can at least scroll through the pages.
style->setOverflowX(OAUTO);
} else if (style->overflowY() == OVISIBLE && style->overflowX() != OVISIBLE)
style->setOverflowY(OAUTO);
// Call setStylesForPaginationMode() if a pagination mode is set for any non-root elements. If these
// styles are specified on a root element, then they will be incorporated in
// StyleResolver::styleForDocument().
if ((style->overflowY() == OPAGEDX || style->overflowY() == OPAGEDY) && !(e->hasTagName(htmlTag) || e->hasTagName(bodyTag)))
setStylesForPaginationMode(WebCore::paginationModeForRenderStyle(style), style);
// Table rows, sections and the table itself will support overflow:hidden and will ignore scroll/auto.
// FIXME: Eventually table sections will support auto and scroll.
if (style->display() == TABLE || style->display() == INLINE_TABLE
|| style->display() == TABLE_ROW_GROUP || style->display() == TABLE_ROW) {
if (style->overflowX() != OVISIBLE && style->overflowX() != OHIDDEN)
style->setOverflowX(OVISIBLE);
if (style->overflowY() != OVISIBLE && style->overflowY() != OHIDDEN)
style->setOverflowY(OVISIBLE);
}
// Menulists should have visible overflow
if (style->appearance() == MenulistPart) {
style->setOverflowX(OVISIBLE);
style->setOverflowY(OVISIBLE);
}
// Cull out any useless layers and also repeat patterns into additional layers.
style->adjustBackgroundLayers();
style->adjustMaskLayers();
// Do the same for animations and transitions.
style->adjustAnimations();
style->adjustTransitions();
// Important: Intrinsic margins get added to controls before the theme has adjusted the style, since the theme will
// alter fonts and heights/widths.
if (e && e->isFormControlElement() && style->fontSize() >= 11) {
// Don't apply intrinsic margins to image buttons. The designer knows how big the images are,
// so we have to treat all image buttons as though they were explicitly sized.
if (!e->hasTagName(inputTag) || !static_cast<HTMLInputElement*>(e)->isImageButton())
addIntrinsicMargins(style);
}
// Let the theme also have a crack at adjusting the style.
if (style->hasAppearance())
RenderTheme::defaultTheme()->adjustStyle(this, style, e, m_hasUAAppearance, m_borderData, m_backgroundData, m_backgroundColor);
// If we have first-letter pseudo style, do not share this style.
if (style->hasPseudoStyle(FIRST_LETTER))
style->setUnique();
// FIXME: when dropping the -webkit prefix on transform-style, we should also have opacity < 1 cause flattening.
if (style->preserves3D() && (style->overflowX() != OVISIBLE
|| style->overflowY() != OVISIBLE
|| style->hasFilter()))
style->setTransformStyle3D(TransformStyle3DFlat);
// Seamless iframes behave like blocks. Map their display to inline-block when marked inline.
if (e && e->hasTagName(iframeTag) && style->display() == INLINE && static_cast<HTMLIFrameElement*>(e)->shouldDisplaySeamlessly())
style->setDisplay(INLINE_BLOCK);
#if ENABLE(SVG)
if (e && e->isSVGElement()) {
// Spec: http://www.w3.org/TR/SVG/masking.html#OverflowProperty
if (style->overflowY() == OSCROLL)
style->setOverflowY(OHIDDEN);
else if (style->overflowY() == OAUTO)
style->setOverflowY(OVISIBLE);
if (style->overflowX() == OSCROLL)
style->setOverflowX(OHIDDEN);
else if (style->overflowX() == OAUTO)
style->setOverflowX(OVISIBLE);
// Only the root <svg> element in an SVG document fragment tree honors css position
if (!(e->hasTagName(SVGNames::svgTag) && e->parentNode() && !e->parentNode()->isSVGElement()))
style->setPosition(RenderStyle::initialPosition());
// RenderSVGRoot handles zooming for the whole SVG subtree, so foreignObject content should
// not be scaled again.
if (e->hasTagName(SVGNames::foreignObjectTag))
style->setEffectiveZoom(RenderStyle::initialZoom());
}
#endif
}
bool StyleResolver::checkRegionStyle(Element* regionElement)
{
// FIXME (BUG 72472): We don't add @-webkit-region rules of scoped style sheets for the moment,
// so all region rules are global by default. Verify whether that can stand or needs changing.
unsigned rulesSize = m_authorStyle->m_regionSelectorsAndRuleSets.size();
for (unsigned i = 0; i < rulesSize; ++i) {
ASSERT(m_authorStyle->m_regionSelectorsAndRuleSets.at(i).ruleSet.get());
if (checkRegionSelector(m_authorStyle->m_regionSelectorsAndRuleSets.at(i).selector, regionElement))
return true;
}
if (m_userStyle) {
rulesSize = m_userStyle->m_regionSelectorsAndRuleSets.size();
for (unsigned i = 0; i < rulesSize; ++i) {
ASSERT(m_userStyle->m_regionSelectorsAndRuleSets.at(i).ruleSet.get());
if (checkRegionSelector(m_userStyle->m_regionSelectorsAndRuleSets.at(i).selector, regionElement))
return true;
}
}
return false;
}
static void checkForOrientationChange(RenderStyle* style, const RenderStyle* parentStyle)
{
FontOrientation childFontOrientation;
NonCJKGlyphOrientation childGlyphOrientation;
getFontAndGlyphOrientation(style, childFontOrientation, childGlyphOrientation);
FontOrientation parentFontOrientation;
NonCJKGlyphOrientation parentGlyphOrientation;
getFontAndGlyphOrientation(parentStyle, parentFontOrientation, parentGlyphOrientation);
if (childFontOrientation == parentFontOrientation && childGlyphOrientation == parentGlyphOrientation)
return;
const FontDescription& childFont = style->fontDescription();
FontDescription newFontDescription(childFont);
newFontDescription.setNonCJKGlyphOrientation(childGlyphOrientation);
newFontDescription.setOrientation(childFontOrientation);
style->setFontDescription(newFontDescription);
}
void StyleResolver::updateFont()
{
if (!m_fontDirty)
return;
checkForTextSizeAdjust();
checkForGenericFamilyChange(style(), m_parentStyle);
checkForZoomChange(style(), m_parentStyle);
checkForOrientationChange(style(), m_parentStyle);
m_style->font().update(m_fontSelector);
m_fontDirty = false;
}
void StyleResolver::cacheBorderAndBackground()
{
m_hasUAAppearance = m_style->hasAppearance();
if (m_hasUAAppearance) {
m_borderData = m_style->border();
m_backgroundData = *m_style->backgroundLayers();
m_backgroundColor = m_style->backgroundColor();
}
}
PassRefPtr<CSSRuleList> StyleResolver::styleRulesForElement(Element* e, unsigned rulesToInclude)
{
return pseudoStyleRulesForElement(e, NOPSEUDO, rulesToInclude);
}
PassRefPtr<CSSRuleList> StyleResolver::pseudoStyleRulesForElement(Element* e, PseudoId pseudoId, unsigned rulesToInclude)
{
if (!e || !e->document()->haveStylesheetsLoaded())
return 0;
m_checker.setMode(SelectorChecker::CollectingRules);
initElement(e);
initForStyleResolve(e, 0, pseudoId);
MatchResult dummy;
if (rulesToInclude & UAAndUserCSSRules) {
// First we match rules from the user agent sheet.
matchUARules(dummy);
// Now we check user sheet rules.
if (m_matchAuthorAndUserStyles)
matchUserRules(dummy, rulesToInclude & EmptyCSSRules);
}
if (m_matchAuthorAndUserStyles && (rulesToInclude & AuthorCSSRules)) {
m_sameOriginOnly = !(rulesToInclude & CrossOriginCSSRules);
// Check the rules in author sheets.
matchAuthorRules(dummy, rulesToInclude & EmptyCSSRules);
m_sameOriginOnly = false;
}
m_checker.setMode(SelectorChecker::ResolvingStyle);
return m_ruleList.release();
}
inline bool StyleResolver::checkSelector(const RuleData& ruleData, const ContainerNode* scope)
{
m_dynamicPseudo = NOPSEUDO;
if (ruleData.hasFastCheckableSelector()) {
// We know this selector does not include any pseudo elements.
if (m_pseudoStyle != NOPSEUDO)
return false;
// We know a sufficiently simple single part selector matches simply because we found it from the rule hash.
// This is limited to HTML only so we don't need to check the namespace.
if (ruleData.hasRightmostSelectorMatchingHTMLBasedOnRuleHash() && m_element->isHTMLElement()) {
if (!ruleData.hasMultipartSelector())
return true;
} else if (!SelectorChecker::tagMatches(m_element, ruleData.selector()))
return false;
if (!SelectorChecker::fastCheckRightmostAttributeSelector(m_element, ruleData.selector()))
return false;
return m_checker.fastCheckSelector(ruleData.selector(), m_element);
}
// Slow path.
SelectorChecker::SelectorCheckingContext context(ruleData.selector(), m_element, SelectorChecker::VisitedMatchEnabled);
context.elementStyle = style();
context.elementParentStyle = m_parentNode ? m_parentNode->renderStyle() : 0;
context.scope = scope;
context.pseudoStyle = m_pseudoStyle;
SelectorChecker::SelectorMatch match = m_checker.checkSelector(context, m_dynamicPseudo);
if (match != SelectorChecker::SelectorMatches)
return false;
if (m_pseudoStyle != NOPSEUDO && m_pseudoStyle != m_dynamicPseudo)
return false;
return true;
}
bool StyleResolver::checkRegionSelector(CSSSelector* regionSelector, Element* regionElement)
{
if (!regionSelector || !regionElement)
return false;
m_pseudoStyle = NOPSEUDO;
for (CSSSelector* s = regionSelector; s; s = CSSSelectorList::next(s))
if (m_checker.checkSelector(s, regionElement))
return true;
return false;
}
// -------------------------------------------------------------------------------------
// this is mostly boring stuff on how to apply a certain rule to the renderstyle...
Length StyleResolver::convertToIntLength(CSSPrimitiveValue* primitiveValue, RenderStyle* style, RenderStyle* rootStyle, double multiplier)
{
return primitiveValue ? primitiveValue->convertToLength<FixedIntegerConversion | PercentConversion | FractionConversion | ViewportPercentageConversion>(style, rootStyle, multiplier) : Length(Undefined);
}
Length StyleResolver::convertToFloatLength(CSSPrimitiveValue* primitiveValue, RenderStyle* style, RenderStyle* rootStyle, double multiplier)
{
return primitiveValue ? primitiveValue->convertToLength<FixedFloatConversion | PercentConversion | FractionConversion | ViewportPercentageConversion>(style, rootStyle, multiplier) : Length(Undefined);
}
template <StyleResolver::StyleApplicationPass pass>
void StyleResolver::applyProperties(const StylePropertySet* properties, StyleRule* rule, bool isImportant, bool inheritedOnly, bool filterRegionProperties)
{
ASSERT(!filterRegionProperties || m_regionForStyling);
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willProcessRule(document(), rule);
unsigned propertyCount = properties->propertyCount();
for (unsigned i = 0; i < propertyCount; ++i) {
StylePropertySet::PropertyReference current = properties->propertyAt(i);
if (isImportant != current.isImportant())
continue;
if (inheritedOnly && !current.isInherited()) {
// If the property value is explicitly inherited, we need to apply further non-inherited properties
// as they might override the value inherited here. For this reason we don't allow declarations with
// explicitly inherited properties to be cached.
ASSERT(!current.value()->isInheritedValue());
continue;
}
CSSPropertyID property = current.id();
if (filterRegionProperties && !StyleResolver::isValidRegionStyleProperty(property))
continue;
switch (pass) {
#if ENABLE(CSS_VARIABLES)
case VariableDefinitions:
COMPILE_ASSERT(CSSPropertyVariable < firstCSSProperty, CSS_variable_is_before_first_property);
if (property == CSSPropertyVariable)
applyProperty(current.id(), current.value());
break;
#endif
case HighPriorityProperties:
COMPILE_ASSERT(firstCSSProperty == CSSPropertyColor, CSS_color_is_first_property);
COMPILE_ASSERT(CSSPropertyZoom == CSSPropertyColor + 18, CSS_zoom_is_end_of_first_prop_range);
COMPILE_ASSERT(CSSPropertyLineHeight == CSSPropertyZoom + 1, CSS_line_height_is_after_zoom);
#if ENABLE(CSS_VARIABLES)
if (property == CSSPropertyVariable)
continue;
#endif
// give special priority to font-xxx, color properties, etc
if (property < CSSPropertyLineHeight)
applyProperty(current.id(), current.value());
// we apply line-height later
else if (property == CSSPropertyLineHeight)
m_lineHeightValue = current.value();
break;
case LowPriorityProperties:
if (property > CSSPropertyLineHeight)
applyProperty(current.id(), current.value());
}
}
InspectorInstrumentation::didProcessRule(cookie);
}
template <StyleResolver::StyleApplicationPass pass>
void StyleResolver::applyMatchedProperties(const MatchResult& matchResult, bool isImportant, int startIndex, int endIndex, bool inheritedOnly)
{
if (startIndex == -1)
return;
if (m_style->insideLink() != NotInsideLink) {
for (int i = startIndex; i <= endIndex; ++i) {
const MatchedProperties& matchedProperties = matchResult.matchedProperties[i];
unsigned linkMatchType = matchedProperties.linkMatchType;
// FIXME: It would be nicer to pass these as arguments but that requires changes in many places.
m_applyPropertyToRegularStyle = linkMatchType & SelectorChecker::MatchLink;
m_applyPropertyToVisitedLinkStyle = linkMatchType & SelectorChecker::MatchVisited;
applyProperties<pass>(matchedProperties.properties.get(), matchResult.matchedRules[i], isImportant, inheritedOnly, matchedProperties.isInRegionRule);
}
m_applyPropertyToRegularStyle = true;
m_applyPropertyToVisitedLinkStyle = false;
return;
}
for (int i = startIndex; i <= endIndex; ++i) {
const MatchedProperties& matchedProperties = matchResult.matchedProperties[i];
applyProperties<pass>(matchedProperties.properties.get(), matchResult.matchedRules[i], isImportant, inheritedOnly, matchedProperties.isInRegionRule);
}
}
unsigned StyleResolver::computeMatchedPropertiesHash(const MatchedProperties* properties, unsigned size)
{
return StringHasher::hashMemory(properties, sizeof(MatchedProperties) * size);
}
bool operator==(const StyleResolver::MatchRanges& a, const StyleResolver::MatchRanges& b)
{
return a.firstUARule == b.firstUARule
&& a.lastUARule == b.lastUARule
&& a.firstAuthorRule == b.firstAuthorRule
&& a.lastAuthorRule == b.lastAuthorRule
&& a.firstUserRule == b.firstUserRule
&& a.lastUserRule == b.lastUserRule;
}
bool operator!=(const StyleResolver::MatchRanges& a, const StyleResolver::MatchRanges& b)
{
return !(a == b);
}
bool operator==(const StyleResolver::MatchedProperties& a, const StyleResolver::MatchedProperties& b)
{
return a.properties == b.properties && a.linkMatchType == b.linkMatchType;
}
bool operator!=(const StyleResolver::MatchedProperties& a, const StyleResolver::MatchedProperties& b)
{
return !(a == b);
}
const StyleResolver::MatchedPropertiesCacheItem* StyleResolver::findFromMatchedPropertiesCache(unsigned hash, const MatchResult& matchResult)
{
ASSERT(hash);
MatchedPropertiesCache::iterator it = m_matchedPropertiesCache.find(hash);
if (it == m_matchedPropertiesCache.end())
return 0;
MatchedPropertiesCacheItem& cacheItem = it->value;
size_t size = matchResult.matchedProperties.size();
if (size != cacheItem.matchedProperties.size())
return 0;
for (size_t i = 0; i < size; ++i) {
if (matchResult.matchedProperties[i] != cacheItem.matchedProperties[i])
return 0;
}
if (cacheItem.ranges != matchResult.ranges)
return 0;
return &cacheItem;
}
void StyleResolver::addToMatchedPropertiesCache(const RenderStyle* style, const RenderStyle* parentStyle, unsigned hash, const MatchResult& matchResult)
{
static const unsigned matchedDeclarationCacheAdditionsBetweenSweeps = 100;
if (++m_matchedPropertiesCacheAdditionsSinceLastSweep >= matchedDeclarationCacheAdditionsBetweenSweeps) {
static const unsigned matchedDeclarationCacheSweepTimeInSeconds = 60;
m_matchedPropertiesCacheSweepTimer.startOneShot(matchedDeclarationCacheSweepTimeInSeconds);
}
ASSERT(hash);
MatchedPropertiesCacheItem cacheItem;
cacheItem.matchedProperties.append(matchResult.matchedProperties);
cacheItem.ranges = matchResult.ranges;
// Note that we don't cache the original RenderStyle instance. It may be further modified.
// The RenderStyle in the cache is really just a holder for the substructures and never used as-is.
cacheItem.renderStyle = RenderStyle::clone(style);
cacheItem.parentRenderStyle = RenderStyle::clone(parentStyle);
m_matchedPropertiesCache.add(hash, cacheItem);
}
void StyleResolver::invalidateMatchedPropertiesCache()
{
m_matchedPropertiesCache.clear();
}
static bool isCacheableInMatchedPropertiesCache(const Element* element, const RenderStyle* style, const RenderStyle* parentStyle)
{
// FIXME: CSSPropertyWebkitWritingMode modifies state when applying to document element. We can't skip the applying by caching.
if (element == element->document()->documentElement() && element->document()->writingModeSetOnDocumentElement())
return false;
if (style->unique() || (style->styleType() != NOPSEUDO && parentStyle->unique()))
return false;
if (style->hasAppearance())
return false;
if (style->zoom() != RenderStyle::initialZoom())
return false;
if (style->writingMode() != RenderStyle::initialWritingMode())
return false;
// The cache assumes static knowledge about which properties are inherited.
if (parentStyle->hasExplicitlyInheritedProperties())
return false;
return true;
}
void StyleResolver::applyMatchedProperties(const MatchResult& matchResult, const Element* element)
{
ASSERT(element);
unsigned cacheHash = matchResult.isCacheable ? computeMatchedPropertiesHash(matchResult.matchedProperties.data(), matchResult.matchedProperties.size()) : 0;
bool applyInheritedOnly = false;
const MatchedPropertiesCacheItem* cacheItem = 0;
if (cacheHash && (cacheItem = findFromMatchedPropertiesCache(cacheHash, matchResult))) {
// We can build up the style by copying non-inherited properties from an earlier style object built using the same exact
// style declarations. We then only need to apply the inherited properties, if any, as their values can depend on the
// element context. This is fast and saves memory by reusing the style data structures.
m_style->copyNonInheritedFrom(cacheItem->renderStyle.get());
if (m_parentStyle->inheritedDataShared(cacheItem->parentRenderStyle.get()) && !isAtShadowBoundary(element)) {
EInsideLink linkStatus = m_style->insideLink();
// If the cache item parent style has identical inherited properties to the current parent style then the
// resulting style will be identical too. We copy the inherited properties over from the cache and are done.
m_style->inheritFrom(cacheItem->renderStyle.get());
// Unfortunately the link status is treated like an inherited property. We need to explicitly restore it.
m_style->setInsideLink(linkStatus);
return;
}
applyInheritedOnly = true;
}
#if ENABLE(CSS_VARIABLES)
// First apply all variable definitions, as they may be used during application of later properties.
applyMatchedProperties<VariableDefinitions>(matchResult, false, 0, matchResult.matchedProperties.size() - 1, applyInheritedOnly);
applyMatchedProperties<VariableDefinitions>(matchResult, true, matchResult.ranges.firstAuthorRule, matchResult.ranges.lastAuthorRule, applyInheritedOnly);
applyMatchedProperties<VariableDefinitions>(matchResult, true, matchResult.ranges.firstUserRule, matchResult.ranges.lastUserRule, applyInheritedOnly);
applyMatchedProperties<VariableDefinitions>(matchResult, true, matchResult.ranges.firstUARule, matchResult.ranges.lastUARule, applyInheritedOnly);
#endif
// Now we have all of the matched rules in the appropriate order. Walk the rules and apply
// high-priority properties first, i.e., those properties that other properties depend on.
// The order is (1) high-priority not important, (2) high-priority important, (3) normal not important
// and (4) normal important.
m_lineHeightValue = 0;
applyMatchedProperties<HighPriorityProperties>(matchResult, false, 0, matchResult.matchedProperties.size() - 1, applyInheritedOnly);
applyMatchedProperties<HighPriorityProperties>(matchResult, true, matchResult.ranges.firstAuthorRule, matchResult.ranges.lastAuthorRule, applyInheritedOnly);
applyMatchedProperties<HighPriorityProperties>(matchResult, true, matchResult.ranges.firstUserRule, matchResult.ranges.lastUserRule, applyInheritedOnly);
applyMatchedProperties<HighPriorityProperties>(matchResult, true, matchResult.ranges.firstUARule, matchResult.ranges.lastUARule, applyInheritedOnly);
if (cacheItem && cacheItem->renderStyle->effectiveZoom() != m_style->effectiveZoom()) {
m_fontDirty = true;
applyInheritedOnly = false;
}
// If our font got dirtied, go ahead and update it now.
updateFont();
// Line-height is set when we are sure we decided on the font-size.
if (m_lineHeightValue)
applyProperty(CSSPropertyLineHeight, m_lineHeightValue);
// Many properties depend on the font. If it changes we just apply all properties.
if (cacheItem && cacheItem->renderStyle->fontDescription() != m_style->fontDescription())
applyInheritedOnly = false;
// Now do the normal priority UA properties.
applyMatchedProperties<LowPriorityProperties>(matchResult, false, matchResult.ranges.firstUARule, matchResult.ranges.lastUARule, applyInheritedOnly);
// Cache our border and background so that we can examine them later.
cacheBorderAndBackground();
// Now do the author and user normal priority properties and all the !important properties.
applyMatchedProperties<LowPriorityProperties>(matchResult, false, matchResult.ranges.lastUARule + 1, matchResult.matchedProperties.size() - 1, applyInheritedOnly);
applyMatchedProperties<LowPriorityProperties>(matchResult, true, matchResult.ranges.firstAuthorRule, matchResult.ranges.lastAuthorRule, applyInheritedOnly);
applyMatchedProperties<LowPriorityProperties>(matchResult, true, matchResult.ranges.firstUserRule, matchResult.ranges.lastUserRule, applyInheritedOnly);
applyMatchedProperties<LowPriorityProperties>(matchResult, true, matchResult.ranges.firstUARule, matchResult.ranges.lastUARule, applyInheritedOnly);
// Start loading resources referenced by this style.
loadPendingResources();
ASSERT(!m_fontDirty);
if (cacheItem || !cacheHash)
return;
if (!isCacheableInMatchedPropertiesCache(m_element, m_style.get(), m_parentStyle))
return;
addToMatchedPropertiesCache(m_style.get(), m_parentStyle, cacheHash, matchResult);
}
static inline bool comparePageRules(const StyleRulePage* r1, const StyleRulePage* r2)
{
return r1->selector()->specificity() < r2->selector()->specificity();
}
void StyleResolver::matchPageRules(MatchResult& result, RuleSet* rules, bool isLeftPage, bool isFirstPage, const String& pageName)
{
if (!rules)
return;
Vector<StyleRulePage*> matchedPageRules;
matchPageRulesForList(matchedPageRules, rules->pageRules(), isLeftPage, isFirstPage, pageName);
if (matchedPageRules.isEmpty())
return;
std::stable_sort(matchedPageRules.begin(), matchedPageRules.end(), comparePageRules);
for (unsigned i = 0; i < matchedPageRules.size(); i++)
addMatchedProperties(result, matchedPageRules[i]->properties());
}
void StyleResolver::matchPageRulesForList(Vector<StyleRulePage*>& matchedRules, const Vector<StyleRulePage*>& rules, bool isLeftPage, bool isFirstPage, const String& pageName)
{
unsigned size = rules.size();
for (unsigned i = 0; i < size; ++i) {
StyleRulePage* rule = rules[i];
const AtomicString& selectorLocalName = rule->selector()->tag().localName();
if (selectorLocalName != starAtom && selectorLocalName != pageName)
continue;
CSSSelector::PseudoType pseudoType = rule->selector()->pseudoType();
if ((pseudoType == CSSSelector::PseudoLeftPage && !isLeftPage)
|| (pseudoType == CSSSelector::PseudoRightPage && isLeftPage)
|| (pseudoType == CSSSelector::PseudoFirstPage && !isFirstPage))
continue;
// If the rule has no properties to apply, then ignore it.
const StylePropertySet* properties = rule->properties();
if (!properties || properties->isEmpty())
continue;
// Add this rule to our list of matched rules.
matchedRules.append(rule);
}
}
bool StyleResolver::isLeftPage(int pageIndex) const
{
bool isFirstPageLeft = false;
if (!m_rootElementStyle->isLeftToRightDirection())
isFirstPageLeft = true;
return (pageIndex + (isFirstPageLeft ? 1 : 0)) % 2;
}
bool StyleResolver::isFirstPage(int pageIndex) const
{
// FIXME: In case of forced left/right page, page at index 1 (not 0) can be the first page.
return (!pageIndex);
}
String StyleResolver::pageName(int /* pageIndex */) const
{
// FIXME: Implement page index to page name mapping.
return "";
}
template <class ListType>
static void collectCSSOMWrappers(HashMap<StyleRule*, RefPtr<CSSStyleRule> >& wrapperMap, ListType* listType)
{
if (!listType)
return;
unsigned size = listType->length();
for (unsigned i = 0; i < size; ++i) {
CSSRule* cssRule = listType->item(i);
switch (cssRule->type()) {
case CSSRule::IMPORT_RULE:
collectCSSOMWrappers(wrapperMap, static_cast<CSSImportRule*>(cssRule)->styleSheet());
break;
case CSSRule::MEDIA_RULE:
collectCSSOMWrappers(wrapperMap, static_cast<CSSMediaRule*>(cssRule));
break;
#if ENABLE(CSS_REGIONS)
case CSSRule::WEBKIT_REGION_RULE:
collectCSSOMWrappers(wrapperMap, static_cast<WebKitCSSRegionRule*>(cssRule));
break;
#endif
case CSSRule::STYLE_RULE:
wrapperMap.add(static_cast<CSSStyleRule*>(cssRule)->styleRule(), static_cast<CSSStyleRule*>(cssRule));
break;
default:
break;
}
}
}
static void collectCSSOMWrappers(HashMap<StyleRule*, RefPtr<CSSStyleRule> >& wrapperMap, HashSet<RefPtr<CSSStyleSheet> >& sheetWrapperSet, StyleSheetContents* styleSheet)
{
if (!styleSheet)
return;
RefPtr<CSSStyleSheet> styleSheetWrapper = CSSStyleSheet::create(styleSheet);
sheetWrapperSet.add(styleSheetWrapper);
collectCSSOMWrappers(wrapperMap, styleSheetWrapper.get());
}
static void collectCSSOMWrappers(HashMap<StyleRule*, RefPtr<CSSStyleRule> >& wrapperMap, const Vector<RefPtr<CSSStyleSheet> >& sheets)
{
for (unsigned i = 0; i < sheets.size(); ++i)
collectCSSOMWrappers(wrapperMap, sheets[i].get());
}
static void collectCSSOMWrappers(HashMap<StyleRule*, RefPtr<CSSStyleRule> >& wrapperMap, DocumentStyleSheetCollection* styleSheetCollection)
{
collectCSSOMWrappers(wrapperMap, styleSheetCollection->activeAuthorStyleSheets());
collectCSSOMWrappers(wrapperMap, styleSheetCollection->pageUserSheet());
collectCSSOMWrappers(wrapperMap, styleSheetCollection->injectedUserStyleSheets());
collectCSSOMWrappers(wrapperMap, styleSheetCollection->documentUserStyleSheets());
}
CSSStyleRule* StyleResolver::ensureFullCSSOMWrapperForInspector(StyleRule* rule)
{
if (m_styleRuleToCSSOMWrapperMap.isEmpty()) {
collectCSSOMWrappers(m_styleRuleToCSSOMWrapperMap, m_styleSheetCSSOMWrapperSet, simpleDefaultStyleSheet);
collectCSSOMWrappers(m_styleRuleToCSSOMWrapperMap, m_styleSheetCSSOMWrapperSet, defaultStyleSheet);
collectCSSOMWrappers(m_styleRuleToCSSOMWrapperMap, m_styleSheetCSSOMWrapperSet, quirksStyleSheet);
collectCSSOMWrappers(m_styleRuleToCSSOMWrapperMap, m_styleSheetCSSOMWrapperSet, svgStyleSheet);
collectCSSOMWrappers(m_styleRuleToCSSOMWrapperMap, m_styleSheetCSSOMWrapperSet, mathMLStyleSheet);
collectCSSOMWrappers(m_styleRuleToCSSOMWrapperMap, m_styleSheetCSSOMWrapperSet, mediaControlsStyleSheet);
collectCSSOMWrappers(m_styleRuleToCSSOMWrapperMap, m_styleSheetCSSOMWrapperSet, fullscreenStyleSheet);
collectCSSOMWrappers(m_styleRuleToCSSOMWrapperMap, document()->styleSheetCollection());
}
return m_styleRuleToCSSOMWrapperMap.get(rule).get();
}
void StyleResolver::applyPropertyToStyle(CSSPropertyID id, CSSValue* value, RenderStyle* style)
{
initElement(0);
initForStyleResolve(0, style);
m_style = style;
applyPropertyToCurrentStyle(id, value);
}
void StyleResolver::applyPropertyToCurrentStyle(CSSPropertyID id, CSSValue* value)
{
if (value)
applyProperty(id, value);
}
inline bool isValidVisitedLinkProperty(CSSPropertyID id)
{
switch (id) {
case CSSPropertyBackgroundColor:
case CSSPropertyBorderLeftColor:
case CSSPropertyBorderRightColor:
case CSSPropertyBorderTopColor:
case CSSPropertyBorderBottomColor:
case CSSPropertyColor:
case CSSPropertyOutlineColor:
case CSSPropertyWebkitColumnRuleColor:
case CSSPropertyWebkitTextEmphasisColor:
case CSSPropertyWebkitTextFillColor:
case CSSPropertyWebkitTextStrokeColor:
// Also allow shorthands so that inherit/initial still work.
case CSSPropertyBackground:
case CSSPropertyBorderLeft:
case CSSPropertyBorderRight:
case CSSPropertyBorderTop:
case CSSPropertyBorderBottom:
case CSSPropertyOutline:
case CSSPropertyWebkitColumnRule:
#if ENABLE(SVG)
case CSSPropertyFill:
case CSSPropertyStroke:
#endif
return true;
default:
break;
}
return false;
}
// http://dev.w3.org/csswg/css3-regions/#the-at-region-style-rule
// FIXME: add incremental support for other region styling properties.
inline bool StyleResolver::isValidRegionStyleProperty(CSSPropertyID id)
{
switch (id) {
case CSSPropertyBackgroundColor:
case CSSPropertyColor:
return true;
default:
break;
}
return false;
}
// SVG handles zooming in a different way compared to CSS. The whole document is scaled instead
// of each individual length value in the render style / tree. CSSPrimitiveValue::computeLength*()
// multiplies each resolved length with the zoom multiplier - so for SVG we need to disable that.
// Though all CSS values that can be applied to outermost <svg> elements (width/height/border/padding...)
// need to respect the scaling. RenderBox (the parent class of RenderSVGRoot) grabs values like
// width/height/border/padding/... from the RenderStyle -> for SVG these values would never scale,
// if we'd pass a 1.0 zoom factor everyhwere. So we only pass a zoom factor of 1.0 for specific
// properties that are NOT allowed to scale within a zoomed SVG document (letter/word-spacing/font-size).
bool StyleResolver::useSVGZoomRules()
{
return m_element && m_element->isSVGElement();
}
static bool createGridTrackBreadth(CSSPrimitiveValue* primitiveValue, StyleResolver* selector, Length& workingLength)
{
workingLength = primitiveValue->convertToLength<FixedIntegerConversion | PercentConversion | ViewportPercentageConversion | AutoConversion>(selector->style(), selector->rootElementStyle(), selector->style()->effectiveZoom());
if (workingLength.isUndefined())
return false;
if (primitiveValue->isLength())
workingLength.setQuirk(primitiveValue->isQuirkValue());
return true;
}
static bool createGridTrackMinMax(CSSPrimitiveValue* primitiveValue, StyleResolver* selector, GridTrackSize& trackSize)
{
Pair* minMaxTrackBreadth = primitiveValue->getPairValue();
if (!minMaxTrackBreadth) {
Length workingLength;
if (!createGridTrackBreadth(primitiveValue, selector, workingLength))
return false;
trackSize.setLength(workingLength);
return true;
}
Length minTrackBreadth;
Length maxTrackBreadth;
if (!createGridTrackBreadth(minMaxTrackBreadth->first(), selector, minTrackBreadth) || !createGridTrackBreadth(minMaxTrackBreadth->second(), selector, maxTrackBreadth))
return false;
trackSize.setMinMax(minTrackBreadth, maxTrackBreadth);
return true;
}
static bool createGridTrackGroup(CSSValue* value, StyleResolver* selector, Vector<GridTrackSize>& trackSizes)
{
if (!value->isValueList())
return false;
for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
CSSValue* currValue = i.value();
if (!currValue->isPrimitiveValue())
return false;
GridTrackSize trackSize;
if (!createGridTrackMinMax(static_cast<CSSPrimitiveValue*>(currValue), selector, trackSize))
return false;
trackSizes.append(trackSize);
}
return true;
}
static bool createGridTrackList(CSSValue* value, Vector<GridTrackSize>& trackSizes, StyleResolver* selector)
{
// Handle 'none'.
if (value->isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(value);
return primitiveValue->getIdent() == CSSValueNone;
}
return createGridTrackGroup(value, selector, trackSizes);
}
static bool createGridPosition(CSSValue* value, GridPosition& position)
{
// For now, we only accept: <integer> | 'auto'
if (!value->isPrimitiveValue())
return false;
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(value);
if (primitiveValue->getIdent() == CSSValueAuto)
return true;
ASSERT(primitiveValue->isNumber());
position.setIntegerPosition(primitiveValue->getIntValue());
return true;
}
#if ENABLE(CSS_VARIABLES)
static bool hasVariableReference(CSSValue* value)
{
if (value->isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(value);
return primitiveValue->hasVariableReference();
}
if (value->isCalculationValue())
return static_cast<CSSCalcValue*>(value)->hasVariableReference();
for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
if (hasVariableReference(i.value()))
return true;
}
return false;
}
void StyleResolver::resolveVariables(CSSPropertyID id, CSSValue* value, Vector<std::pair<CSSPropertyID, String> >& knownExpressions)
{
std::pair<CSSPropertyID, String> expression(id, value->serializeResolvingVariables(*style()->variables()));
if (knownExpressions.contains(expression))
return; // cycle detected.
knownExpressions.append(expression);
// FIXME: It would be faster not to re-parse from strings, but for now CSS property validation lives inside the parser so we do it there.
RefPtr<StylePropertySet> resultSet = StylePropertySet::create();
if (!CSSParser::parseValue(resultSet.get(), id, expression.second, false, document()))
return; // expression failed to parse.
for (unsigned i = 0; i < resultSet->propertyCount(); i++) {
StylePropertySet::PropertyReference property = resultSet->propertyAt(i);
if (property.id() != CSSPropertyVariable && hasVariableReference(property.value()))
resolveVariables(property.id(), property.value(), knownExpressions);
else
applyProperty(property.id(), property.value());
}
}
#endif
void StyleResolver::applyProperty(CSSPropertyID id, CSSValue* value)
{
#if ENABLE(CSS_VARIABLES)
if (id != CSSPropertyVariable && hasVariableReference(value)) {
Vector<std::pair<CSSPropertyID, String> > knownExpressions;
resolveVariables(id, value, knownExpressions);
return;
}
#endif
bool isInherit = m_parentNode && value->isInheritedValue();
bool isInitial = value->isInitialValue() || (!m_parentNode && value->isInheritedValue());
ASSERT(!isInherit || !isInitial); // isInherit -> !isInitial && isInitial -> !isInherit
ASSERT(!isInherit || (m_parentNode && m_parentStyle)); // isInherit -> (m_parentNode && m_parentStyle)
if (!applyPropertyToRegularStyle() && (!applyPropertyToVisitedLinkStyle() || !isValidVisitedLinkProperty(id))) {
// Limit the properties that can be applied to only the ones honored by :visited.
return;
}
if (isInherit && !m_parentStyle->hasExplicitlyInheritedProperties() && !CSSProperty::isInheritedProperty(id))
m_parentStyle->setHasExplicitlyInheritedProperties();
#if ENABLE(CSS_VARIABLES)
if (id == CSSPropertyVariable) {
ASSERT(value->isVariableValue());
CSSVariableValue* variable = static_cast<CSSVariableValue*>(value);
ASSERT(!variable->name().isEmpty());
ASSERT(!variable->value().isEmpty());
m_style->setVariable(variable->name(), variable->value());
return;
}
#endif
// Check lookup table for implementations and use when available.
const PropertyHandler& handler = m_styleBuilder.propertyHandler(id);
if (handler.isValid()) {
if (isInherit)
handler.applyInheritValue(id, this);
else if (isInitial)
handler.applyInitialValue(id, this);
else
handler.applyValue(id, this, value);
return;
}
CSSPrimitiveValue* primitiveValue = value->isPrimitiveValue() ? static_cast<CSSPrimitiveValue*>(value) : 0;
float zoomFactor = m_style->effectiveZoom();
// What follows is a list that maps the CSS properties into their corresponding front-end
// RenderStyle values. Shorthands (e.g. border, background) occur in this list as well and
// are only hit when mapping "inherit" or "initial" into front-end values.
switch (id) {
// lists
case CSSPropertyContent:
// list of string, uri, counter, attr, i
{
// FIXME: In CSS3, it will be possible to inherit content. In CSS2 it is not. This
// note is a reminder that eventually "inherit" needs to be supported.
if (isInitial) {
m_style->clearContent();
return;
}
if (!value->isValueList())
return;
bool didSet = false;
for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
CSSValue* item = i.value();
if (item->isImageGeneratorValue()) {
if (item->isGradientValue())
m_style->setContent(StyleGeneratedImage::create(static_cast<CSSGradientValue*>(item)->gradientWithStylesResolved(this).get()), didSet);
else
m_style->setContent(StyleGeneratedImage::create(static_cast<CSSImageGeneratorValue*>(item)), didSet);
didSet = true;
#if ENABLE(CSS_IMAGE_SET)
} else if (item->isImageSetValue()) {
m_style->setContent(setOrPendingFromValue(CSSPropertyContent, static_cast<CSSImageSetValue*>(item)), didSet);
didSet = true;
#endif
}
if (item->isImageValue()) {
m_style->setContent(cachedOrPendingFromValue(CSSPropertyContent, static_cast<CSSImageValue*>(item)), didSet);
didSet = true;
continue;
}
if (!item->isPrimitiveValue())
continue;
CSSPrimitiveValue* contentValue = static_cast<CSSPrimitiveValue*>(item);
if (contentValue->isString()) {
m_style->setContent(contentValue->getStringValue().impl(), didSet);
didSet = true;
} else if (contentValue->isAttr()) {
// FIXME: Can a namespace be specified for an attr(foo)?
if (m_style->styleType() == NOPSEUDO)
m_style->setUnique();
else
m_parentStyle->setUnique();
QualifiedName attr(nullAtom, contentValue->getStringValue().impl(), nullAtom);
const AtomicString& value = m_element->getAttribute(attr);
m_style->setContent(value.isNull() ? emptyAtom : value.impl(), didSet);
didSet = true;
// register the fact that the attribute value affects the style
m_features.attrsInRules.add(attr.localName().impl());
} else if (contentValue->isCounter()) {
Counter* counterValue = contentValue->getCounterValue();
EListStyleType listStyleType = NoneListStyle;
int listStyleIdent = counterValue->listStyleIdent();
if (listStyleIdent != CSSValueNone)
listStyleType = static_cast<EListStyleType>(listStyleIdent - CSSValueDisc);
OwnPtr<CounterContent> counter = adoptPtr(new CounterContent(counterValue->identifier(), listStyleType, counterValue->separator()));
m_style->setContent(counter.release(), didSet);
didSet = true;
} else {
switch (contentValue->getIdent()) {
case CSSValueOpenQuote:
m_style->setContent(OPEN_QUOTE, didSet);
didSet = true;
break;
case CSSValueCloseQuote:
m_style->setContent(CLOSE_QUOTE, didSet);
didSet = true;
break;
case CSSValueNoOpenQuote:
m_style->setContent(NO_OPEN_QUOTE, didSet);
didSet = true;
break;
case CSSValueNoCloseQuote:
m_style->setContent(NO_CLOSE_QUOTE, didSet);
didSet = true;
break;
default:
// normal and none do not have any effect.
{ }
}
}
}
if (!didSet)
m_style->clearContent();
return;
}
case CSSPropertyQuotes:
if (isInherit) {
m_style->setQuotes(m_parentStyle->quotes());
return;
}
if (isInitial) {
m_style->setQuotes(0);
return;
}
if (value->isValueList()) {
CSSValueList* list = static_cast<CSSValueList*>(value);
RefPtr<QuotesData> quotes = QuotesData::create();
for (size_t i = 0; i < list->length(); i += 2) {
CSSValue* first = list->itemWithoutBoundsCheck(i);
// item() returns null if out of bounds so this is safe.
CSSValue* second = list->item(i + 1);
if (!second)
continue;
ASSERT(first->isPrimitiveValue());
ASSERT(second->isPrimitiveValue());
String startQuote = static_cast<CSSPrimitiveValue*>(first)->getStringValue();
String endQuote = static_cast<CSSPrimitiveValue*>(second)->getStringValue();
quotes->addPair(std::make_pair(startQuote, endQuote));
}
m_style->setQuotes(quotes);
return;
}
if (primitiveValue) {
if (primitiveValue->getIdent() == CSSValueNone)
m_style->setQuotes(QuotesData::create());
}
return;
case CSSPropertyFontFamily: {
// list of strings and ids
if (isInherit) {
FontDescription parentFontDescription = m_parentStyle->fontDescription();
FontDescription fontDescription = m_style->fontDescription();
fontDescription.setGenericFamily(parentFontDescription.genericFamily());
fontDescription.setFamily(parentFontDescription.firstFamily());
fontDescription.setIsSpecifiedFont(parentFontDescription.isSpecifiedFont());
setFontDescription(fontDescription);
return;
}
if (isInitial) {
FontDescription initialDesc = FontDescription();
FontDescription fontDescription = m_style->fontDescription();
// We need to adjust the size to account for the generic family change from monospace
// to non-monospace.
if (fontDescription.keywordSize() && fontDescription.useFixedDefaultSize())
setFontSize(fontDescription, fontSizeForKeyword(m_checker.document(), CSSValueXxSmall + fontDescription.keywordSize() - 1, false));
fontDescription.setGenericFamily(initialDesc.genericFamily());
if (!initialDesc.firstFamily().familyIsEmpty())
fontDescription.setFamily(initialDesc.firstFamily());
setFontDescription(fontDescription);
return;
}
if (!value->isValueList())
return;
FontDescription fontDescription = m_style->fontDescription();
FontFamily& firstFamily = fontDescription.firstFamily();
FontFamily* currFamily = 0;
// Before mapping in a new font-family property, we should reset the generic family.
bool oldFamilyUsedFixedDefaultSize = fontDescription.useFixedDefaultSize();
fontDescription.setGenericFamily(FontDescription::NoFamily);
for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
CSSValue* item = i.value();
if (!item->isPrimitiveValue())
continue;
CSSPrimitiveValue* contentValue = static_cast<CSSPrimitiveValue*>(item);
AtomicString face;
Settings* settings = documentSettings();
if (contentValue->isString())
face = contentValue->getStringValue();
else if (settings) {
switch (contentValue->getIdent()) {
case CSSValueWebkitBody:
face = settings->standardFontFamily();
break;
case CSSValueSerif:
face = serifFamily;
fontDescription.setGenericFamily(FontDescription::SerifFamily);
break;
case CSSValueSansSerif:
face = sansSerifFamily;
fontDescription.setGenericFamily(FontDescription::SansSerifFamily);
break;
case CSSValueCursive:
face = cursiveFamily;
fontDescription.setGenericFamily(FontDescription::CursiveFamily);
break;
case CSSValueFantasy:
face = fantasyFamily;
fontDescription.setGenericFamily(FontDescription::FantasyFamily);
break;
case CSSValueMonospace:
face = monospaceFamily;
fontDescription.setGenericFamily(FontDescription::MonospaceFamily);
break;
case CSSValueWebkitPictograph:
face = pictographFamily;
fontDescription.setGenericFamily(FontDescription::PictographFamily);
break;
}
}
if (!face.isEmpty()) {
if (!currFamily) {
// Filling in the first family.
firstFamily.setFamily(face);
firstFamily.appendFamily(0); // Remove any inherited family-fallback list.
currFamily = &firstFamily;
fontDescription.setIsSpecifiedFont(fontDescription.genericFamily() == FontDescription::NoFamily);
} else {
RefPtr<SharedFontFamily> newFamily = SharedFontFamily::create();
newFamily->setFamily(face);
currFamily->appendFamily(newFamily);
currFamily = newFamily.get();
}
}
}
// We can't call useFixedDefaultSize() until all new font families have been added
// If currFamily is non-zero then we set at least one family on this description.
if (currFamily) {
if (fontDescription.keywordSize() && fontDescription.useFixedDefaultSize() != oldFamilyUsedFixedDefaultSize)
setFontSize(fontDescription, fontSizeForKeyword(m_checker.document(), CSSValueXxSmall + fontDescription.keywordSize() - 1, !oldFamilyUsedFixedDefaultSize));
setFontDescription(fontDescription);
}
return;
}
// shorthand properties
case CSSPropertyBackground:
if (isInitial) {
m_style->clearBackgroundLayers();
m_style->setBackgroundColor(Color());
} else if (isInherit) {
m_style->inheritBackgroundLayers(*m_parentStyle->backgroundLayers());
m_style->setBackgroundColor(m_parentStyle->backgroundColor());
}
return;
case CSSPropertyWebkitMask:
if (isInitial)
m_style->clearMaskLayers();
else if (isInherit)
m_style->inheritMaskLayers(*m_parentStyle->maskLayers());
return;
case CSSPropertyFont:
if (isInherit) {
FontDescription fontDescription = m_parentStyle->fontDescription();
m_style->setLineHeight(m_parentStyle->specifiedLineHeight());
m_lineHeightValue = 0;
setFontDescription(fontDescription);
} else if (isInitial) {
Settings* settings = documentSettings();
ASSERT(settings); // If we're doing style resolution, this document should always be in a frame and thus have settings
if (!settings)
return;
initializeFontStyle(settings);
} else if (primitiveValue) {
m_style->setLineHeight(RenderStyle::initialLineHeight());
m_lineHeightValue = 0;
FontDescription fontDescription;
RenderTheme::defaultTheme()->systemFont(primitiveValue->getIdent(), fontDescription);
// Double-check and see if the theme did anything. If not, don't bother updating the font.
if (fontDescription.isAbsoluteSize()) {
// Make sure the rendering mode and printer font settings are updated.
Settings* settings = documentSettings();
ASSERT(settings); // If we're doing style resolution, this document should always be in a frame and thus have settings
if (!settings)
return;
fontDescription.setRenderingMode(settings->fontRenderingMode());
fontDescription.setUsePrinterFont(m_checker.document()->printing() || !settings->screenFontSubstitutionEnabled());
// Handle the zoom factor.
fontDescription.setComputedSize(getComputedSizeFromSpecifiedSize(m_checker.document(), m_style.get(), fontDescription.isAbsoluteSize(), fontDescription.specifiedSize(), useSVGZoomRules()));
setFontDescription(fontDescription);
}
} else if (value->isFontValue()) {
FontValue* font = static_cast<FontValue*>(value);
if (!font->style || !font->variant || !font->weight
|| !font->size || !font->lineHeight || !font->family)
return;
applyProperty(CSSPropertyFontStyle, font->style.get());
applyProperty(CSSPropertyFontVariant, font->variant.get());
applyProperty(CSSPropertyFontWeight, font->weight.get());
// The previous properties can dirty our font but they don't try to read the font's
// properties back, which is safe. However if font-size is using the 'ex' unit, it will
// need query the dirtied font's x-height to get the computed size. To be safe in this
// case, let's just update the font now.
updateFont();
applyProperty(CSSPropertyFontSize, font->size.get());
m_lineHeightValue = font->lineHeight.get();
applyProperty(CSSPropertyFontFamily, font->family.get());
}
return;
// CSS3 Properties
case CSSPropertyTextShadow:
case CSSPropertyBoxShadow:
case CSSPropertyWebkitBoxShadow: {
if (isInherit) {
if (id == CSSPropertyTextShadow)
return m_style->setTextShadow(m_parentStyle->textShadow() ? adoptPtr(new ShadowData(*m_parentStyle->textShadow())) : nullptr);
return m_style->setBoxShadow(m_parentStyle->boxShadow() ? adoptPtr(new ShadowData(*m_parentStyle->boxShadow())) : nullptr);
}
if (isInitial || primitiveValue) // initial | none
return id == CSSPropertyTextShadow ? m_style->setTextShadow(nullptr) : m_style->setBoxShadow(nullptr);
if (!value->isValueList())
return;
for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
CSSValue* currValue = i.value();
if (!currValue->isShadowValue())
continue;
ShadowValue* item = static_cast<ShadowValue*>(currValue);
int x = item->x->computeLength<int>(style(), m_rootElementStyle, zoomFactor);
int y = item->y->computeLength<int>(style(), m_rootElementStyle, zoomFactor);
int blur = item->blur ? item->blur->computeLength<int>(style(), m_rootElementStyle, zoomFactor) : 0;
int spread = item->spread ? item->spread->computeLength<int>(style(), m_rootElementStyle, zoomFactor) : 0;
ShadowStyle shadowStyle = item->style && item->style->getIdent() == CSSValueInset ? Inset : Normal;
Color color;
if (item->color)
color = colorFromPrimitiveValue(item->color.get());
else if (m_style)
color = m_style->color();
OwnPtr<ShadowData> shadowData = adoptPtr(new ShadowData(IntPoint(x, y), blur, spread, shadowStyle, id == CSSPropertyWebkitBoxShadow, color.isValid() ? color : Color::transparent));
if (id == CSSPropertyTextShadow)
m_style->setTextShadow(shadowData.release(), i.index()); // add to the list if this is not the first entry
else
m_style->setBoxShadow(shadowData.release(), i.index()); // add to the list if this is not the first entry
}
return;
}
case CSSPropertyWebkitBoxReflect: {
HANDLE_INHERIT_AND_INITIAL(boxReflect, BoxReflect)
if (primitiveValue) {
m_style->setBoxReflect(RenderStyle::initialBoxReflect());
return;
}
if (!value->isReflectValue())
return;
CSSReflectValue* reflectValue = static_cast<CSSReflectValue*>(value);
RefPtr<StyleReflection> reflection = StyleReflection::create();
reflection->setDirection(reflectValue->direction());
if (reflectValue->offset())
reflection->setOffset(reflectValue->offset()->convertToLength<FixedIntegerConversion | PercentConversion | CalculatedConversion>(style(), m_rootElementStyle, zoomFactor));
NinePieceImage mask;
mask.setMaskDefaults();
m_styleMap.mapNinePieceImage(id, reflectValue->mask(), mask);
reflection->setMask(mask);
m_style->setBoxReflect(reflection.release());
return;
}
case CSSPropertySrc: // Only used in @font-face rules.
return;
case CSSPropertyUnicodeRange: // Only used in @font-face rules.
return;
case CSSPropertyWebkitColumnRule:
if (isInherit) {
m_style->setColumnRuleColor(m_parentStyle->columnRuleColor().isValid() ? m_parentStyle->columnRuleColor() : m_parentStyle->color());
m_style->setColumnRuleStyle(m_parentStyle->columnRuleStyle());
m_style->setColumnRuleWidth(m_parentStyle->columnRuleWidth());
} else if (isInitial)
m_style->resetColumnRule();
return;
case CSSPropertyWebkitMarquee:
if (!isInherit)
return;
m_style->setMarqueeDirection(m_parentStyle->marqueeDirection());
m_style->setMarqueeIncrement(m_parentStyle->marqueeIncrement());
m_style->setMarqueeSpeed(m_parentStyle->marqueeSpeed());
m_style->setMarqueeLoopCount(m_parentStyle->marqueeLoopCount());
m_style->setMarqueeBehavior(m_parentStyle->marqueeBehavior());
return;
case CSSPropertyWebkitMarqueeRepetition: {
HANDLE_INHERIT_AND_INITIAL(marqueeLoopCount, MarqueeLoopCount)
if (!primitiveValue)
return;
if (primitiveValue->getIdent() == CSSValueInfinite)
m_style->setMarqueeLoopCount(-1); // -1 means repeat forever.
else if (primitiveValue->isNumber())
m_style->setMarqueeLoopCount(primitiveValue->getIntValue());
return;
}
case CSSPropertyWebkitMarqueeSpeed: {
HANDLE_INHERIT_AND_INITIAL(marqueeSpeed, MarqueeSpeed)
if (!primitiveValue)
return;
if (int ident = primitiveValue->getIdent()) {
switch (ident) {
case CSSValueSlow:
m_style->setMarqueeSpeed(500); // 500 msec.
break;
case CSSValueNormal:
m_style->setMarqueeSpeed(85); // 85msec. The WinIE default.
break;
case CSSValueFast:
m_style->setMarqueeSpeed(10); // 10msec. Super fast.
break;
}
} else if (primitiveValue->isTime())
m_style->setMarqueeSpeed(primitiveValue->computeTime<int, CSSPrimitiveValue::Milliseconds>());
else if (primitiveValue->isNumber()) // For scrollamount support.
m_style->setMarqueeSpeed(primitiveValue->getIntValue());
return;
}
case CSSPropertyWebkitMarqueeIncrement: {
HANDLE_INHERIT_AND_INITIAL(marqueeIncrement, MarqueeIncrement)
if (!primitiveValue)
return;
if (primitiveValue->getIdent()) {
switch (primitiveValue->getIdent()) {
case CSSValueSmall:
m_style->setMarqueeIncrement(Length(1, Fixed)); // 1px.
break;
case CSSValueNormal:
m_style->setMarqueeIncrement(Length(6, Fixed)); // 6px. The WinIE default.
break;
case CSSValueLarge:
m_style->setMarqueeIncrement(Length(36, Fixed)); // 36px.
break;
}
} else {
Length marqueeLength = convertToIntLength(primitiveValue, style(), m_rootElementStyle);
if (!marqueeLength.isUndefined())
m_style->setMarqueeIncrement(marqueeLength);
}
return;
}
case CSSPropertyWebkitLocale: {
HANDLE_INHERIT_AND_INITIAL(locale, Locale);
if (!primitiveValue)
return;
if (primitiveValue->getIdent() == CSSValueAuto)
m_style->setLocale(nullAtom);
else
m_style->setLocale(primitiveValue->getStringValue());
FontDescription fontDescription = m_style->fontDescription();
fontDescription.setScript(localeToScriptCodeForFontSelection(m_style->locale()));
setFontDescription(fontDescription);
return;
}
case CSSPropertyWebkitTextSizeAdjust: {
HANDLE_INHERIT_AND_INITIAL(textSizeAdjust, TextSizeAdjust)
if (!primitiveValue || !primitiveValue->getIdent())
return;
setTextSizeAdjust(primitiveValue->getIdent() == CSSValueAuto);
return;
}
#if ENABLE(DASHBOARD_SUPPORT)
case CSSPropertyWebkitDashboardRegion:
{
HANDLE_INHERIT_AND_INITIAL(dashboardRegions, DashboardRegions)
if (!primitiveValue)
return;
if (primitiveValue->getIdent() == CSSValueNone) {
m_style->setDashboardRegions(RenderStyle::noneDashboardRegions());
return;
}
DashboardRegion* region = primitiveValue->getDashboardRegionValue();
if (!region)
return;
DashboardRegion* first = region;
while (region) {
Length top = convertToIntLength(region->top(), style(), m_rootElementStyle);
Length right = convertToIntLength(region->right(), style(), m_rootElementStyle);
Length bottom = convertToIntLength(region->bottom(), style(), m_rootElementStyle);
Length left = convertToIntLength(region->left(), style(), m_rootElementStyle);
if (top.isUndefined())
top = Length();
if (right.isUndefined())
right = Length();
if (bottom.isUndefined())
bottom = Length();
if (left.isUndefined())
left = Length();
if (region->m_isCircle)
m_style->setDashboardRegion(StyleDashboardRegion::Circle, region->m_label, top, right, bottom, left, region == first ? false : true);
else if (region->m_isRectangle)
m_style->setDashboardRegion(StyleDashboardRegion::Rectangle, region->m_label, top, right, bottom, left, region == first ? false : true);
region = region->m_next.get();
}
m_element->document()->setHasAnnotatedRegions(true);
return;
}
#endif
#if ENABLE(DRAGGABLE_REGION)
case CSSPropertyWebkitAppRegion: {
if (!primitiveValue || !primitiveValue->getIdent())
return;
m_style->setDraggableRegionMode(primitiveValue->getIdent() == CSSValueDrag ? DraggableRegionDrag : DraggableRegionNoDrag);
m_element->document()->setHasAnnotatedRegions(true);
return;
}
#endif
case CSSPropertyWebkitTextStrokeWidth: {
HANDLE_INHERIT_AND_INITIAL(textStrokeWidth, TextStrokeWidth)
float width = 0;
switch (primitiveValue->getIdent()) {
case CSSValueThin:
case CSSValueMedium:
case CSSValueThick: {
double result = 1.0 / 48;
if (primitiveValue->getIdent() == CSSValueMedium)
result *= 3;
else if (primitiveValue->getIdent() == CSSValueThick)
result *= 5;
width = CSSPrimitiveValue::create(result, CSSPrimitiveValue::CSS_EMS)->computeLength<float>(style(), m_rootElementStyle, zoomFactor);
break;
}
default:
width = primitiveValue->computeLength<float>(style(), m_rootElementStyle, zoomFactor);
break;
}
m_style->setTextStrokeWidth(width);
return;
}
case CSSPropertyWebkitTransform: {
HANDLE_INHERIT_AND_INITIAL(transform, Transform);
TransformOperations operations;
createTransformOperations(value, style(), m_rootElementStyle, operations);
m_style->setTransform(operations);
return;
}
case CSSPropertyWebkitPerspective: {
HANDLE_INHERIT_AND_INITIAL(perspective, Perspective)
if (!primitiveValue)
return;
if (primitiveValue->getIdent() == CSSValueNone) {
m_style->setPerspective(0);
return;
}
float perspectiveValue;
if (primitiveValue->isLength())
perspectiveValue = primitiveValue->computeLength<float>(style(), m_rootElementStyle, zoomFactor);
else if (primitiveValue->isNumber()) {
// For backward compatibility, treat valueless numbers as px.
perspectiveValue = CSSPrimitiveValue::create(primitiveValue->getDoubleValue(), CSSPrimitiveValue::CSS_PX)->computeLength<float>(style(), m_rootElementStyle, zoomFactor);
} else
return;
if (perspectiveValue >= 0.0f)
m_style->setPerspective(perspectiveValue);
return;
}
case CSSPropertyWebkitAnimation:
if (isInitial)
m_style->clearAnimations();
else if (isInherit)
m_style->inheritAnimations(m_parentStyle->animations());
return;
case CSSPropertyWebkitTransition:
if (isInitial)
m_style->clearTransitions();
else if (isInherit)
m_style->inheritTransitions(m_parentStyle->transitions());
return;
#if ENABLE(TOUCH_EVENTS)
case CSSPropertyWebkitTapHighlightColor: {
HANDLE_INHERIT_AND_INITIAL(tapHighlightColor, TapHighlightColor);
if (!primitiveValue)
break;
Color col = colorFromPrimitiveValue(primitiveValue);
m_style->setTapHighlightColor(col);
return;
}
#endif
#if ENABLE(ACCELERATED_OVERFLOW_SCROLLING)
case CSSPropertyWebkitOverflowScrolling: {
HANDLE_INHERIT_AND_INITIAL(useTouchOverflowScrolling, UseTouchOverflowScrolling);
if (!primitiveValue)
break;
m_style->setUseTouchOverflowScrolling(primitiveValue->getIdent() == CSSValueTouch);
return;
}
#endif
case CSSPropertyInvalid:
return;
// Directional properties are resolved by resolveDirectionAwareProperty() before the switch.
case CSSPropertyWebkitBorderEnd:
case CSSPropertyWebkitBorderEndColor:
case CSSPropertyWebkitBorderEndStyle:
case CSSPropertyWebkitBorderEndWidth:
case CSSPropertyWebkitBorderStart:
case CSSPropertyWebkitBorderStartColor:
case CSSPropertyWebkitBorderStartStyle:
case CSSPropertyWebkitBorderStartWidth:
case CSSPropertyWebkitBorderBefore:
case CSSPropertyWebkitBorderBeforeColor:
case CSSPropertyWebkitBorderBeforeStyle:
case CSSPropertyWebkitBorderBeforeWidth:
case CSSPropertyWebkitBorderAfter:
case CSSPropertyWebkitBorderAfterColor:
case CSSPropertyWebkitBorderAfterStyle:
case CSSPropertyWebkitBorderAfterWidth:
case CSSPropertyWebkitMarginEnd:
case CSSPropertyWebkitMarginStart:
case CSSPropertyWebkitMarginBefore:
case CSSPropertyWebkitMarginAfter:
case CSSPropertyWebkitMarginCollapse:
case CSSPropertyWebkitMarginBeforeCollapse:
case CSSPropertyWebkitMarginTopCollapse:
case CSSPropertyWebkitMarginAfterCollapse:
case CSSPropertyWebkitMarginBottomCollapse:
case CSSPropertyWebkitPaddingEnd:
case CSSPropertyWebkitPaddingStart:
case CSSPropertyWebkitPaddingBefore:
case CSSPropertyWebkitPaddingAfter:
case CSSPropertyWebkitLogicalWidth:
case CSSPropertyWebkitLogicalHeight:
case CSSPropertyWebkitMinLogicalWidth:
case CSSPropertyWebkitMinLogicalHeight:
case CSSPropertyWebkitMaxLogicalWidth:
case CSSPropertyWebkitMaxLogicalHeight:
{
CSSPropertyID newId = CSSProperty::resolveDirectionAwareProperty(id, m_style->direction(), m_style->writingMode());
ASSERT(newId != id);
return applyProperty(newId, value);
}
case CSSPropertyFontStretch:
case CSSPropertyPage:
case CSSPropertyTextLineThrough:
case CSSPropertyTextLineThroughColor:
case CSSPropertyTextLineThroughMode:
case CSSPropertyTextLineThroughStyle:
case CSSPropertyTextLineThroughWidth:
case CSSPropertyTextOverline:
case CSSPropertyTextOverlineColor:
case CSSPropertyTextOverlineMode:
case CSSPropertyTextOverlineStyle:
case CSSPropertyTextOverlineWidth:
case CSSPropertyTextUnderline:
case CSSPropertyTextUnderlineColor:
case CSSPropertyTextUnderlineMode:
case CSSPropertyTextUnderlineStyle:
case CSSPropertyTextUnderlineWidth:
case CSSPropertyWebkitFontSizeDelta:
case CSSPropertyWebkitTextDecorationsInEffect:
case CSSPropertyWebkitTextStroke:
case CSSPropertyWebkitTextEmphasis:
return;
// CSS Text Layout Module Level 3: Vertical writing support
case CSSPropertyWebkitWritingMode: {
HANDLE_INHERIT_AND_INITIAL(writingMode, WritingMode);
if (primitiveValue)
setWritingMode(*primitiveValue);
// FIXME: It is not ok to modify document state while applying style.
if (m_element && m_element == m_element->document()->documentElement())
m_element->document()->setWritingModeSetOnDocumentElement(true);
return;
}
case CSSPropertyWebkitTextOrientation: {
HANDLE_INHERIT_AND_INITIAL(textOrientation, TextOrientation);
if (primitiveValue)
setTextOrientation(*primitiveValue);
return;
}
case CSSPropertyWebkitLineBoxContain: {
HANDLE_INHERIT_AND_INITIAL(lineBoxContain, LineBoxContain)
if (primitiveValue && primitiveValue->getIdent() == CSSValueNone) {
m_style->setLineBoxContain(LineBoxContainNone);
return;
}
if (!value->isCSSLineBoxContainValue())
return;
CSSLineBoxContainValue* lineBoxContainValue = static_cast<CSSLineBoxContainValue*>(value);
m_style->setLineBoxContain(lineBoxContainValue->value());
return;
}
// CSS Fonts Module Level 3
case CSSPropertyWebkitFontFeatureSettings: {
if (primitiveValue && primitiveValue->getIdent() == CSSValueNormal) {
setFontDescription(m_style->fontDescription().makeNormalFeatureSettings());
return;
}
if (!value->isValueList())
return;
FontDescription fontDescription = m_style->fontDescription();
CSSValueList* list = static_cast<CSSValueList*>(value);
RefPtr<FontFeatureSettings> settings = FontFeatureSettings::create();
int len = list->length();
for (int i = 0; i < len; ++i) {
CSSValue* item = list->itemWithoutBoundsCheck(i);
if (!item->isFontFeatureValue())
continue;
FontFeatureValue* feature = static_cast<FontFeatureValue*>(item);
settings->append(FontFeature(feature->tag(), feature->value()));
}
fontDescription.setFeatureSettings(settings.release());
setFontDescription(fontDescription);
return;
}
#if ENABLE(CSS_FILTERS)
case CSSPropertyWebkitFilter: {
HANDLE_INHERIT_AND_INITIAL(filter, Filter);
FilterOperations operations;
if (createFilterOperations(value, style(), m_rootElementStyle, operations))
m_style->setFilter(operations);
return;
}
#endif
case CSSPropertyWebkitGridColumns: {
Vector<GridTrackSize> trackSizes;
if (!createGridTrackList(value, trackSizes, this))
return;
m_style->setGridColumns(trackSizes);
return;
}
case CSSPropertyWebkitGridRows: {
Vector<GridTrackSize> trackSizes;
if (!createGridTrackList(value, trackSizes, this))
return;
m_style->setGridRows(trackSizes);
return;
}
case CSSPropertyWebkitGridColumn: {
GridPosition column;
if (!createGridPosition(value, column))
return;
m_style->setGridItemColumn(column);
return;
}
case CSSPropertyWebkitGridRow: {
GridPosition row;
if (!createGridPosition(value, row))
return;
m_style->setGridItemRow(row);
return;
}
// These properties are implemented in the StyleBuilder lookup table.
case CSSPropertyBackgroundAttachment:
case CSSPropertyBackgroundClip:
case CSSPropertyBackgroundColor:
case CSSPropertyBackgroundImage:
case CSSPropertyBackgroundOrigin:
case CSSPropertyBackgroundPosition:
case CSSPropertyBackgroundPositionX:
case CSSPropertyBackgroundPositionY:
case CSSPropertyBackgroundRepeat:
case CSSPropertyBackgroundRepeatX:
case CSSPropertyBackgroundRepeatY:
case CSSPropertyBackgroundSize:
case CSSPropertyBorder:
case CSSPropertyBorderBottom:
case CSSPropertyBorderBottomColor:
case CSSPropertyBorderBottomLeftRadius:
case CSSPropertyBorderBottomRightRadius:
case CSSPropertyBorderBottomStyle:
case CSSPropertyBorderBottomWidth:
case CSSPropertyBorderCollapse:
case CSSPropertyBorderColor:
case CSSPropertyBorderImage:
case CSSPropertyBorderImageOutset:
case CSSPropertyBorderImageRepeat:
case CSSPropertyBorderImageSlice:
case CSSPropertyBorderImageSource:
case CSSPropertyBorderImageWidth:
case CSSPropertyBorderLeft:
case CSSPropertyBorderLeftColor:
case CSSPropertyBorderLeftStyle:
case CSSPropertyBorderLeftWidth:
case CSSPropertyBorderRadius:
case CSSPropertyBorderRight:
case CSSPropertyBorderRightColor:
case CSSPropertyBorderRightStyle:
case CSSPropertyBorderRightWidth:
case CSSPropertyBorderSpacing:
case CSSPropertyBorderStyle:
case CSSPropertyBorderTop:
case CSSPropertyBorderTopColor:
case CSSPropertyBorderTopLeftRadius:
case CSSPropertyBorderTopRightRadius:
case CSSPropertyBorderTopStyle:
case CSSPropertyBorderTopWidth:
case CSSPropertyBorderWidth:
case CSSPropertyBottom:
case CSSPropertyBoxSizing:
case CSSPropertyCaptionSide:
case CSSPropertyClear:
case CSSPropertyClip:
case CSSPropertyColor:
case CSSPropertyCounterIncrement:
case CSSPropertyCounterReset:
case CSSPropertyCursor:
case CSSPropertyDirection:
case CSSPropertyDisplay:
case CSSPropertyEmptyCells:
case CSSPropertyFloat:
case CSSPropertyFontSize:
case CSSPropertyFontStyle:
case CSSPropertyFontVariant:
case CSSPropertyFontWeight:
case CSSPropertyHeight:
#if ENABLE(CSS_IMAGE_ORIENTATION)
case CSSPropertyImageOrientation:
#endif
case CSSPropertyImageRendering:
#if ENABLE(CSS_IMAGE_RESOLUTION)
case CSSPropertyImageResolution:
#endif
case CSSPropertyLeft:
case CSSPropertyLetterSpacing:
case CSSPropertyLineHeight:
case CSSPropertyListStyle:
case CSSPropertyListStyleImage:
case CSSPropertyListStylePosition:
case CSSPropertyListStyleType:
case CSSPropertyMargin:
case CSSPropertyMarginBottom:
case CSSPropertyMarginLeft:
case CSSPropertyMarginRight:
case CSSPropertyMarginTop:
case CSSPropertyMaxHeight:
case CSSPropertyMaxWidth:
case CSSPropertyMinHeight:
case CSSPropertyMinWidth:
case CSSPropertyOpacity:
case CSSPropertyOrphans:
case CSSPropertyOutline:
case CSSPropertyOutlineColor:
case CSSPropertyOutlineOffset:
case CSSPropertyOutlineStyle:
case CSSPropertyOutlineWidth:
case CSSPropertyOverflow:
case CSSPropertyOverflowWrap:
case CSSPropertyOverflowX:
case CSSPropertyOverflowY:
case CSSPropertyPadding:
case CSSPropertyPaddingBottom:
case CSSPropertyPaddingLeft:
case CSSPropertyPaddingRight:
case CSSPropertyPaddingTop:
case CSSPropertyPageBreakAfter:
case CSSPropertyPageBreakBefore:
case CSSPropertyPageBreakInside:
case CSSPropertyPointerEvents:
case CSSPropertyPosition:
case CSSPropertyResize:
case CSSPropertyRight:
case CSSPropertySize:
case CSSPropertySpeak:
case CSSPropertyTabSize:
case CSSPropertyTableLayout:
case CSSPropertyTextAlign:
case CSSPropertyTextDecoration:
case CSSPropertyTextIndent:
case CSSPropertyTextOverflow:
case CSSPropertyTextRendering:
case CSSPropertyTextTransform:
case CSSPropertyTop:
case CSSPropertyUnicodeBidi:
#if ENABLE(CSS_VARIABLES)
case CSSPropertyVariable:
#endif
case CSSPropertyVerticalAlign:
case CSSPropertyVisibility:
case CSSPropertyWebkitAnimationDelay:
case CSSPropertyWebkitAnimationDirection:
case CSSPropertyWebkitAnimationDuration:
case CSSPropertyWebkitAnimationFillMode:
case CSSPropertyWebkitAnimationIterationCount:
case CSSPropertyWebkitAnimationName:
case CSSPropertyWebkitAnimationPlayState:
case CSSPropertyWebkitAnimationTimingFunction:
case CSSPropertyWebkitAppearance:
case CSSPropertyWebkitAspectRatio:
case CSSPropertyWebkitBackfaceVisibility:
case CSSPropertyWebkitBackgroundClip:
case CSSPropertyWebkitBackgroundComposite:
case CSSPropertyWebkitBackgroundOrigin:
case CSSPropertyWebkitBackgroundSize:
case CSSPropertyWebkitBorderFit:
case CSSPropertyWebkitBorderHorizontalSpacing:
case CSSPropertyWebkitBorderImage:
case CSSPropertyWebkitBorderRadius:
case CSSPropertyWebkitBorderVerticalSpacing:
case CSSPropertyWebkitBoxAlign:
#if ENABLE(CSS_BOX_DECORATION_BREAK)
case CSSPropertyWebkitBoxDecorationBreak:
#endif
case CSSPropertyWebkitBoxDirection:
case CSSPropertyWebkitBoxFlex:
case CSSPropertyWebkitBoxFlexGroup:
case CSSPropertyWebkitBoxLines:
case CSSPropertyWebkitBoxOrdinalGroup:
case CSSPropertyWebkitBoxOrient:
case CSSPropertyWebkitBoxPack:
case CSSPropertyWebkitColorCorrection:
case CSSPropertyWebkitColumnAxis:
case CSSPropertyWebkitColumnBreakAfter:
case CSSPropertyWebkitColumnBreakBefore:
case CSSPropertyWebkitColumnBreakInside:
case CSSPropertyWebkitColumnCount:
case CSSPropertyWebkitColumnGap:
case CSSPropertyWebkitColumnProgression:
case CSSPropertyWebkitColumnRuleColor:
case CSSPropertyWebkitColumnRuleStyle:
case CSSPropertyWebkitColumnRuleWidth:
case CSSPropertyWebkitColumns:
case CSSPropertyWebkitColumnSpan:
case CSSPropertyWebkitColumnWidth:
case CSSPropertyWebkitAlignContent:
case CSSPropertyWebkitAlignItems:
case CSSPropertyWebkitAlignSelf:
case CSSPropertyWebkitFlex:
case CSSPropertyWebkitFlexBasis:
case CSSPropertyWebkitFlexDirection:
case CSSPropertyWebkitFlexFlow:
case CSSPropertyWebkitFlexGrow:
case CSSPropertyWebkitFlexShrink:
case CSSPropertyWebkitFlexWrap:
case CSSPropertyWebkitJustifyContent:
case CSSPropertyWebkitOrder:
#if ENABLE(CSS_REGIONS)
case CSSPropertyWebkitFlowFrom:
case CSSPropertyWebkitFlowInto:
#endif
case CSSPropertyWebkitFontKerning:
case CSSPropertyWebkitFontSmoothing:
case CSSPropertyWebkitFontVariantLigatures:
case CSSPropertyWebkitHighlight:
case CSSPropertyWebkitHyphenateCharacter:
case CSSPropertyWebkitHyphenateLimitAfter:
case CSSPropertyWebkitHyphenateLimitBefore:
case CSSPropertyWebkitHyphenateLimitLines:
case CSSPropertyWebkitHyphens:
case CSSPropertyWebkitLineAlign:
case CSSPropertyWebkitLineBreak:
case CSSPropertyWebkitLineClamp:
case CSSPropertyWebkitLineGrid:
case CSSPropertyWebkitLineSnap:
case CSSPropertyWebkitMarqueeDirection:
case CSSPropertyWebkitMarqueeStyle:
case CSSPropertyWebkitMaskBoxImage:
case CSSPropertyWebkitMaskBoxImageOutset:
case CSSPropertyWebkitMaskBoxImageRepeat:
case CSSPropertyWebkitMaskBoxImageSlice:
case CSSPropertyWebkitMaskBoxImageSource:
case CSSPropertyWebkitMaskBoxImageWidth:
case CSSPropertyWebkitMaskClip:
case CSSPropertyWebkitMaskComposite:
case CSSPropertyWebkitMaskImage:
case CSSPropertyWebkitMaskOrigin:
case CSSPropertyWebkitMaskPosition:
case CSSPropertyWebkitMaskPositionX:
case CSSPropertyWebkitMaskPositionY:
case CSSPropertyWebkitMaskRepeat:
case CSSPropertyWebkitMaskRepeatX:
case CSSPropertyWebkitMaskRepeatY:
case CSSPropertyWebkitMaskSize:
case CSSPropertyWebkitNbspMode:
case CSSPropertyWebkitPerspectiveOrigin:
case CSSPropertyWebkitPerspectiveOriginX:
case CSSPropertyWebkitPerspectiveOriginY:
case CSSPropertyWebkitPrintColorAdjust:
#if ENABLE(CSS_REGIONS)
case CSSPropertyWebkitRegionBreakAfter:
case CSSPropertyWebkitRegionBreakBefore:
case CSSPropertyWebkitRegionBreakInside:
case CSSPropertyWebkitRegionOverflow:
#endif
case CSSPropertyWebkitRtlOrdering:
case CSSPropertyWebkitTextCombine:
#if ENABLE(CSS3_TEXT)
case CSSPropertyWebkitTextDecorationLine:
case CSSPropertyWebkitTextDecorationStyle:
case CSSPropertyWebkitTextAlignLast:
#endif // CSS3_TEXT
case CSSPropertyWebkitTextEmphasisColor:
case CSSPropertyWebkitTextEmphasisPosition:
case CSSPropertyWebkitTextEmphasisStyle:
case CSSPropertyWebkitTextFillColor:
case CSSPropertyWebkitTextSecurity:
case CSSPropertyWebkitTextStrokeColor:
case CSSPropertyWebkitTransformOrigin:
case CSSPropertyWebkitTransformOriginX:
case CSSPropertyWebkitTransformOriginY:
case CSSPropertyWebkitTransformOriginZ:
case CSSPropertyWebkitTransformStyle:
case CSSPropertyWebkitTransitionDelay:
case CSSPropertyWebkitTransitionDuration:
case CSSPropertyWebkitTransitionProperty:
case CSSPropertyWebkitTransitionTimingFunction:
case CSSPropertyWebkitUserDrag:
case CSSPropertyWebkitUserModify:
case CSSPropertyWebkitUserSelect:
case CSSPropertyWebkitClipPath:
#if ENABLE(CSS_EXCLUSIONS)
case CSSPropertyWebkitWrap:
case CSSPropertyWebkitWrapFlow:
case CSSPropertyWebkitShapeMargin:
case CSSPropertyWebkitShapePadding:
case CSSPropertyWebkitWrapThrough:
case CSSPropertyWebkitShapeInside:
case CSSPropertyWebkitShapeOutside:
#endif
case CSSPropertyWhiteSpace:
case CSSPropertyWidows:
case CSSPropertyWidth:
case CSSPropertyWordBreak:
case CSSPropertyWordSpacing:
case CSSPropertyWordWrap:
case CSSPropertyZIndex:
case CSSPropertyZoom:
#if ENABLE(CSS_DEVICE_ADAPTATION)
case CSSPropertyMaxZoom:
case CSSPropertyMinZoom:
case CSSPropertyOrientation:
case CSSPropertyUserZoom:
#endif
ASSERT_NOT_REACHED();
return;
#if ENABLE(SVG)
default:
// Try the SVG properties
applySVGProperty(id, value);
return;
#endif
}
}
PassRefPtr<StyleImage> StyleResolver::styleImage(CSSPropertyID property, CSSValue* value)
{
if (value->isImageValue())
return cachedOrPendingFromValue(property, static_cast<CSSImageValue*>(value));
if (value->isImageGeneratorValue()) {
if (value->isGradientValue())
return generatedOrPendingFromValue(property, static_cast<CSSGradientValue*>(value)->gradientWithStylesResolved(this).get());
return generatedOrPendingFromValue(property, static_cast<CSSImageGeneratorValue*>(value));
}
#if ENABLE(CSS_IMAGE_SET)
if (value->isImageSetValue())
return setOrPendingFromValue(property, static_cast<CSSImageSetValue*>(value));
#endif
return 0;
}
PassRefPtr<StyleImage> StyleResolver::cachedOrPendingFromValue(CSSPropertyID property, CSSImageValue* value)
{
RefPtr<StyleImage> image = value->cachedOrPendingImage();
if (image && image->isPendingImage())
m_pendingImageProperties.set(property, value);
return image.release();
}
PassRefPtr<StyleImage> StyleResolver::generatedOrPendingFromValue(CSSPropertyID property, CSSImageGeneratorValue* value)
{
if (value->isPending()) {
m_pendingImageProperties.set(property, value);
return StylePendingImage::create(value);
}
return StyleGeneratedImage::create(value);
}
#if ENABLE(CSS_IMAGE_SET)
PassRefPtr<StyleImage> StyleResolver::setOrPendingFromValue(CSSPropertyID property, CSSImageSetValue* value)
{
RefPtr<StyleImage> image = value->cachedOrPendingImageSet(document());
if (image && image->isPendingImage())
m_pendingImageProperties.set(property, value);
return image.release();
}
#endif
void StyleResolver::checkForTextSizeAdjust()
{
if (m_style->textSizeAdjust())
return;
FontDescription newFontDescription(m_style->fontDescription());
newFontDescription.setComputedSize(newFontDescription.specifiedSize());
m_style->setFontDescription(newFontDescription);
}
void StyleResolver::checkForZoomChange(RenderStyle* style, RenderStyle* parentStyle)
{
if (style->effectiveZoom() == parentStyle->effectiveZoom())
return;
const FontDescription& childFont = style->fontDescription();
FontDescription newFontDescription(childFont);
setFontSize(newFontDescription, childFont.specifiedSize());
style->setFontDescription(newFontDescription);
}
void StyleResolver::checkForGenericFamilyChange(RenderStyle* style, RenderStyle* parentStyle)
{
const FontDescription& childFont = style->fontDescription();
if (childFont.isAbsoluteSize() || !parentStyle)
return;
const FontDescription& parentFont = parentStyle->fontDescription();
if (childFont.useFixedDefaultSize() == parentFont.useFixedDefaultSize())
return;
// For now, lump all families but monospace together.
if (childFont.genericFamily() != FontDescription::MonospaceFamily
&& parentFont.genericFamily() != FontDescription::MonospaceFamily)
return;
// We know the parent is monospace or the child is monospace, and that font
// size was unspecified. We want to scale our font size as appropriate.
// If the font uses a keyword size, then we refetch from the table rather than
// multiplying by our scale factor.
float size;
if (childFont.keywordSize())
size = fontSizeForKeyword(m_checker.document(), CSSValueXxSmall + childFont.keywordSize() - 1, childFont.useFixedDefaultSize());
else {
Settings* settings = documentSettings();
float fixedScaleFactor = (settings && settings->defaultFixedFontSize() && settings->defaultFontSize())
? static_cast<float>(settings->defaultFixedFontSize()) / settings->defaultFontSize()
: 1;
size = parentFont.useFixedDefaultSize() ?
childFont.specifiedSize() / fixedScaleFactor :
childFont.specifiedSize() * fixedScaleFactor;
}
FontDescription newFontDescription(childFont);
setFontSize(newFontDescription, size);
style->setFontDescription(newFontDescription);
}
void StyleResolver::initializeFontStyle(Settings* settings)
{
FontDescription fontDescription;
fontDescription.setGenericFamily(FontDescription::StandardFamily);
fontDescription.setRenderingMode(settings->fontRenderingMode());
fontDescription.setUsePrinterFont(m_checker.document()->printing() || !settings->screenFontSubstitutionEnabled());
const AtomicString& standardFontFamily = documentSettings()->standardFontFamily();
if (!standardFontFamily.isEmpty()) {
fontDescription.firstFamily().setFamily(standardFontFamily);
fontDescription.firstFamily().appendFamily(0);
}
fontDescription.setKeywordSize(CSSValueMedium - CSSValueXxSmall + 1);
setFontSize(fontDescription, fontSizeForKeyword(m_checker.document(), CSSValueMedium, false));
m_style->setLineHeight(RenderStyle::initialLineHeight());
m_lineHeightValue = 0;
setFontDescription(fontDescription);
}
void StyleResolver::setFontSize(FontDescription& fontDescription, float size)
{
fontDescription.setSpecifiedSize(size);
fontDescription.setComputedSize(getComputedSizeFromSpecifiedSize(m_checker.document(), m_style.get(), fontDescription.isAbsoluteSize(), size, useSVGZoomRules()));
}
float StyleResolver::getComputedSizeFromSpecifiedSize(Document* document, RenderStyle* style, bool isAbsoluteSize, float specifiedSize, bool useSVGZoomRules)
{
float zoomFactor = 1.0f;
if (!useSVGZoomRules) {
zoomFactor = style->effectiveZoom();
if (Frame* frame = document->frame())
zoomFactor *= frame->textZoomFactor();
}
return StyleResolver::getComputedSizeFromSpecifiedSize(document, zoomFactor, isAbsoluteSize, specifiedSize);
}
float StyleResolver::getComputedSizeFromSpecifiedSize(Document* document, float zoomFactor, bool isAbsoluteSize, float specifiedSize, ESmartMinimumForFontSize useSmartMinimumForFontSize)
{
// Text with a 0px font size should not be visible and therefore needs to be
// exempt from minimum font size rules. Acid3 relies on this for pixel-perfect
// rendering. This is also compatible with other browsers that have minimum
// font size settings (e.g. Firefox).
if (fabsf(specifiedSize) < std::numeric_limits<float>::epsilon())
return 0.0f;
// We support two types of minimum font size. The first is a hard override that applies to
// all fonts. This is "minSize." The second type of minimum font size is a "smart minimum"
// that is applied only when the Web page can't know what size it really asked for, e.g.,
// when it uses logical sizes like "small" or expresses the font-size as a percentage of
// the user's default font setting.
// With the smart minimum, we never want to get smaller than the minimum font size to keep fonts readable.
// However we always allow the page to set an explicit pixel size that is smaller,
// since sites will mis-render otherwise (e.g., http://www.gamespot.com with a 9px minimum).
Settings* settings = document->settings();
if (!settings)
return 1.0f;
int minSize = settings->minimumFontSize();
int minLogicalSize = settings->minimumLogicalFontSize();
float zoomedSize = specifiedSize * zoomFactor;
// Apply the hard minimum first. We only apply the hard minimum if after zooming we're still too small.
if (zoomedSize < minSize)
zoomedSize = minSize;
// Now apply the "smart minimum." This minimum is also only applied if we're still too small
// after zooming. The font size must either be relative to the user default or the original size
// must have been acceptable. In other words, we only apply the smart minimum whenever we're positive
// doing so won't disrupt the layout.
if (useSmartMinimumForFontSize && zoomedSize < minLogicalSize && (specifiedSize >= minLogicalSize || !isAbsoluteSize))
zoomedSize = minLogicalSize;
// Also clamp to a reasonable maximum to prevent insane font sizes from causing crashes on various
// platforms (I'm looking at you, Windows.)
return min(1000000.0f, zoomedSize);
}
const int fontSizeTableMax = 16;
const int fontSizeTableMin = 9;
const int totalKeywords = 8;
// WinIE/Nav4 table for font sizes. Designed to match the legacy font mapping system of HTML.
static const int quirksFontSizeTable[fontSizeTableMax - fontSizeTableMin + 1][totalKeywords] =
{
{ 9, 9, 9, 9, 11, 14, 18, 28 },
{ 9, 9, 9, 10, 12, 15, 20, 31 },
{ 9, 9, 9, 11, 13, 17, 22, 34 },
{ 9, 9, 10, 12, 14, 18, 24, 37 },
{ 9, 9, 10, 13, 16, 20, 26, 40 }, // fixed font default (13)
{ 9, 9, 11, 14, 17, 21, 28, 42 },
{ 9, 10, 12, 15, 17, 23, 30, 45 },
{ 9, 10, 13, 16, 18, 24, 32, 48 } // proportional font default (16)
};
// HTML 1 2 3 4 5 6 7
// CSS xxs xs s m l xl xxl
// |
// user pref
// Strict mode table matches MacIE and Mozilla's settings exactly.
static const int strictFontSizeTable[fontSizeTableMax - fontSizeTableMin + 1][totalKeywords] =
{
{ 9, 9, 9, 9, 11, 14, 18, 27 },
{ 9, 9, 9, 10, 12, 15, 20, 30 },
{ 9, 9, 10, 11, 13, 17, 22, 33 },
{ 9, 9, 10, 12, 14, 18, 24, 36 },
{ 9, 10, 12, 13, 16, 20, 26, 39 }, // fixed font default (13)
{ 9, 10, 12, 14, 17, 21, 28, 42 },
{ 9, 10, 13, 15, 18, 23, 30, 45 },
{ 9, 10, 13, 16, 18, 24, 32, 48 } // proportional font default (16)
};
// HTML 1 2 3 4 5 6 7
// CSS xxs xs s m l xl xxl
// |
// user pref
// For values outside the range of the table, we use Todd Fahrner's suggested scale
// factors for each keyword value.
static const float fontSizeFactors[totalKeywords] = { 0.60f, 0.75f, 0.89f, 1.0f, 1.2f, 1.5f, 2.0f, 3.0f };
float StyleResolver::fontSizeForKeyword(Document* document, int keyword, bool shouldUseFixedDefaultSize)
{
Settings* settings = document->settings();
if (!settings)
return 1.0f;
bool quirksMode = document->inQuirksMode();
int mediumSize = shouldUseFixedDefaultSize ? settings->defaultFixedFontSize() : settings->defaultFontSize();
if (mediumSize >= fontSizeTableMin && mediumSize <= fontSizeTableMax) {
// Look up the entry in the table.
int row = mediumSize - fontSizeTableMin;
int col = (keyword - CSSValueXxSmall);
return quirksMode ? quirksFontSizeTable[row][col] : strictFontSizeTable[row][col];
}
// Value is outside the range of the table. Apply the scale factor instead.
float minLogicalSize = max(settings->minimumLogicalFontSize(), 1);
return max(fontSizeFactors[keyword - CSSValueXxSmall]*mediumSize, minLogicalSize);
}
template<typename T>
static int findNearestLegacyFontSize(int pixelFontSize, const T* table, int multiplier)
{
// Ignore table[0] because xx-small does not correspond to any legacy font size.
for (int i = 1; i < totalKeywords - 1; i++) {
if (pixelFontSize * 2 < (table[i] + table[i + 1]) * multiplier)
return i;
}
return totalKeywords - 1;
}
int StyleResolver::legacyFontSize(Document* document, int pixelFontSize, bool shouldUseFixedDefaultSize)
{
Settings* settings = document->settings();
if (!settings)
return 1;
bool quirksMode = document->inQuirksMode();
int mediumSize = shouldUseFixedDefaultSize ? settings->defaultFixedFontSize() : settings->defaultFontSize();
if (mediumSize >= fontSizeTableMin && mediumSize <= fontSizeTableMax) {
int row = mediumSize - fontSizeTableMin;
return findNearestLegacyFontSize<int>(pixelFontSize, quirksMode ? quirksFontSizeTable[row] : strictFontSizeTable[row], 1);
}
return findNearestLegacyFontSize<float>(pixelFontSize, fontSizeFactors, mediumSize);
}
static Color colorForCSSValue(int cssValueId)
{
struct ColorValue {
int cssValueId;
RGBA32 color;
};
static const ColorValue colorValues[] = {
{ CSSValueAqua, 0xFF00FFFF },
{ CSSValueBlack, 0xFF000000 },
{ CSSValueBlue, 0xFF0000FF },
{ CSSValueFuchsia, 0xFFFF00FF },
{ CSSValueGray, 0xFF808080 },
{ CSSValueGreen, 0xFF008000 },
{ CSSValueGrey, 0xFF808080 },
{ CSSValueLime, 0xFF00FF00 },
{ CSSValueMaroon, 0xFF800000 },
{ CSSValueNavy, 0xFF000080 },
{ CSSValueOlive, 0xFF808000 },
{ CSSValueOrange, 0xFFFFA500 },
{ CSSValuePurple, 0xFF800080 },
{ CSSValueRed, 0xFFFF0000 },
{ CSSValueSilver, 0xFFC0C0C0 },
{ CSSValueTeal, 0xFF008080 },
{ CSSValueTransparent, 0x00000000 },
{ CSSValueWhite, 0xFFFFFFFF },
{ CSSValueYellow, 0xFFFFFF00 },
{ 0, 0 }
};
for (const ColorValue* col = colorValues; col->cssValueId; ++col) {
if (col->cssValueId == cssValueId)
return col->color;
}
return RenderTheme::defaultTheme()->systemColor(cssValueId);
}
bool StyleResolver::colorFromPrimitiveValueIsDerivedFromElement(CSSPrimitiveValue* value)
{
int ident = value->getIdent();
switch (ident) {
case CSSValueWebkitText:
case CSSValueWebkitLink:
case CSSValueWebkitActivelink:
case CSSValueCurrentcolor:
return true;
default:
return false;
}
}
Color StyleResolver::colorFromPrimitiveValue(CSSPrimitiveValue* value, bool forVisitedLink) const
{
if (value->isRGBColor())
return Color(value->getRGBA32Value());
int ident = value->getIdent();
switch (ident) {
case 0:
return Color();
case CSSValueWebkitText:
return m_element->document()->textColor();
case CSSValueWebkitLink:
return (m_element->isLink() && forVisitedLink) ? m_element->document()->visitedLinkColor() : m_element->document()->linkColor();
case CSSValueWebkitActivelink:
return m_element->document()->activeLinkColor();
case CSSValueWebkitFocusRingColor:
return RenderTheme::focusRingColor();
case CSSValueCurrentcolor:
return m_style->color();
default:
return colorForCSSValue(ident);
}
}
void StyleResolver::addViewportDependentMediaQueryResult(const MediaQueryExp* expr, bool result)
{
m_viewportDependentMediaQueryResults.append(adoptPtr(new MediaQueryResult(*expr, result)));
}
bool StyleResolver::affectedByViewportChange() const
{
unsigned s = m_viewportDependentMediaQueryResults.size();
for (unsigned i = 0; i < s; i++) {
if (m_medium->eval(&m_viewportDependentMediaQueryResults[i]->m_expression) != m_viewportDependentMediaQueryResults[i]->m_result)
return true;
}
return false;
}
static TransformOperation::OperationType getTransformOperationType(WebKitCSSTransformValue::TransformOperationType type)
{
switch (type) {
case WebKitCSSTransformValue::ScaleTransformOperation: return TransformOperation::SCALE;
case WebKitCSSTransformValue::ScaleXTransformOperation: return TransformOperation::SCALE_X;
case WebKitCSSTransformValue::ScaleYTransformOperation: return TransformOperation::SCALE_Y;
case WebKitCSSTransformValue::ScaleZTransformOperation: return TransformOperation::SCALE_Z;
case WebKitCSSTransformValue::Scale3DTransformOperation: return TransformOperation::SCALE_3D;
case WebKitCSSTransformValue::TranslateTransformOperation: return TransformOperation::TRANSLATE;
case WebKitCSSTransformValue::TranslateXTransformOperation: return TransformOperation::TRANSLATE_X;
case WebKitCSSTransformValue::TranslateYTransformOperation: return TransformOperation::TRANSLATE_Y;
case WebKitCSSTransformValue::TranslateZTransformOperation: return TransformOperation::TRANSLATE_Z;
case WebKitCSSTransformValue::Translate3DTransformOperation: return TransformOperation::TRANSLATE_3D;
case WebKitCSSTransformValue::RotateTransformOperation: return TransformOperation::ROTATE;
case WebKitCSSTransformValue::RotateXTransformOperation: return TransformOperation::ROTATE_X;
case WebKitCSSTransformValue::RotateYTransformOperation: return TransformOperation::ROTATE_Y;
case WebKitCSSTransformValue::RotateZTransformOperation: return TransformOperation::ROTATE_Z;
case WebKitCSSTransformValue::Rotate3DTransformOperation: return TransformOperation::ROTATE_3D;
case WebKitCSSTransformValue::SkewTransformOperation: return TransformOperation::SKEW;
case WebKitCSSTransformValue::SkewXTransformOperation: return TransformOperation::SKEW_X;
case WebKitCSSTransformValue::SkewYTransformOperation: return TransformOperation::SKEW_Y;
case WebKitCSSTransformValue::MatrixTransformOperation: return TransformOperation::MATRIX;
case WebKitCSSTransformValue::Matrix3DTransformOperation: return TransformOperation::MATRIX_3D;
case WebKitCSSTransformValue::PerspectiveTransformOperation: return TransformOperation::PERSPECTIVE;
case WebKitCSSTransformValue::UnknownTransformOperation: return TransformOperation::NONE;
}
return TransformOperation::NONE;
}
bool StyleResolver::createTransformOperations(CSSValue* inValue, RenderStyle* style, RenderStyle* rootStyle, TransformOperations& outOperations)
{
if (!inValue || !inValue->isValueList()) {
outOperations.clear();
return false;
}
float zoomFactor = style ? style->effectiveZoom() : 1;
TransformOperations operations;
for (CSSValueListIterator i = inValue; i.hasMore(); i.advance()) {
CSSValue* currValue = i.value();
if (!currValue->isWebKitCSSTransformValue())
continue;
WebKitCSSTransformValue* transformValue = static_cast<WebKitCSSTransformValue*>(i.value());
if (!transformValue->length())
continue;
bool haveNonPrimitiveValue = false;
for (unsigned j = 0; j < transformValue->length(); ++j) {
if (!transformValue->itemWithoutBoundsCheck(j)->isPrimitiveValue()) {
haveNonPrimitiveValue = true;
break;
}
}
if (haveNonPrimitiveValue)
continue;
CSSPrimitiveValue* firstValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(0));
switch (transformValue->operationType()) {
case WebKitCSSTransformValue::ScaleTransformOperation:
case WebKitCSSTransformValue::ScaleXTransformOperation:
case WebKitCSSTransformValue::ScaleYTransformOperation: {
double sx = 1.0;
double sy = 1.0;
if (transformValue->operationType() == WebKitCSSTransformValue::ScaleYTransformOperation)
sy = firstValue->getDoubleValue();
else {
sx = firstValue->getDoubleValue();
if (transformValue->operationType() != WebKitCSSTransformValue::ScaleXTransformOperation) {
if (transformValue->length() > 1) {
CSSPrimitiveValue* secondValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(1));
sy = secondValue->getDoubleValue();
} else
sy = sx;
}
}
operations.operations().append(ScaleTransformOperation::create(sx, sy, 1.0, getTransformOperationType(transformValue->operationType())));
break;
}
case WebKitCSSTransformValue::ScaleZTransformOperation:
case WebKitCSSTransformValue::Scale3DTransformOperation: {
double sx = 1.0;
double sy = 1.0;
double sz = 1.0;
if (transformValue->operationType() == WebKitCSSTransformValue::ScaleZTransformOperation)
sz = firstValue->getDoubleValue();
else if (transformValue->operationType() == WebKitCSSTransformValue::ScaleYTransformOperation)
sy = firstValue->getDoubleValue();
else {
sx = firstValue->getDoubleValue();
if (transformValue->operationType() != WebKitCSSTransformValue::ScaleXTransformOperation) {
if (transformValue->length() > 2) {
CSSPrimitiveValue* thirdValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(2));
sz = thirdValue->getDoubleValue();
}
if (transformValue->length() > 1) {
CSSPrimitiveValue* secondValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(1));
sy = secondValue->getDoubleValue();
} else
sy = sx;
}
}
operations.operations().append(ScaleTransformOperation::create(sx, sy, sz, getTransformOperationType(transformValue->operationType())));
break;
}
case WebKitCSSTransformValue::TranslateTransformOperation:
case WebKitCSSTransformValue::TranslateXTransformOperation:
case WebKitCSSTransformValue::TranslateYTransformOperation: {
Length tx = Length(0, Fixed);
Length ty = Length(0, Fixed);
if (transformValue->operationType() == WebKitCSSTransformValue::TranslateYTransformOperation)
ty = convertToFloatLength(firstValue, style, rootStyle, zoomFactor);
else {
tx = convertToFloatLength(firstValue, style, rootStyle, zoomFactor);
if (transformValue->operationType() != WebKitCSSTransformValue::TranslateXTransformOperation) {
if (transformValue->length() > 1) {
CSSPrimitiveValue* secondValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(1));
ty = convertToFloatLength(secondValue, style, rootStyle, zoomFactor);
}
}
}
if (tx.isUndefined() || ty.isUndefined())
return false;
operations.operations().append(TranslateTransformOperation::create(tx, ty, Length(0, Fixed), getTransformOperationType(transformValue->operationType())));
break;
}
case WebKitCSSTransformValue::TranslateZTransformOperation:
case WebKitCSSTransformValue::Translate3DTransformOperation: {
Length tx = Length(0, Fixed);
Length ty = Length(0, Fixed);
Length tz = Length(0, Fixed);
if (transformValue->operationType() == WebKitCSSTransformValue::TranslateZTransformOperation)
tz = convertToFloatLength(firstValue, style, rootStyle, zoomFactor);
else if (transformValue->operationType() == WebKitCSSTransformValue::TranslateYTransformOperation)
ty = convertToFloatLength(firstValue, style, rootStyle, zoomFactor);
else {
tx = convertToFloatLength(firstValue, style, rootStyle, zoomFactor);
if (transformValue->operationType() != WebKitCSSTransformValue::TranslateXTransformOperation) {
if (transformValue->length() > 2) {
CSSPrimitiveValue* thirdValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(2));
tz = convertToFloatLength(thirdValue, style, rootStyle, zoomFactor);
}
if (transformValue->length() > 1) {
CSSPrimitiveValue* secondValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(1));
ty = convertToFloatLength(secondValue, style, rootStyle, zoomFactor);
}
}
}
if (tx.isUndefined() || ty.isUndefined() || tz.isUndefined())
return false;
operations.operations().append(TranslateTransformOperation::create(tx, ty, tz, getTransformOperationType(transformValue->operationType())));
break;
}
case WebKitCSSTransformValue::RotateTransformOperation: {
double angle = firstValue->computeDegrees();
operations.operations().append(RotateTransformOperation::create(0, 0, 1, angle, getTransformOperationType(transformValue->operationType())));
break;
}
case WebKitCSSTransformValue::RotateXTransformOperation:
case WebKitCSSTransformValue::RotateYTransformOperation:
case WebKitCSSTransformValue::RotateZTransformOperation: {
double x = 0;
double y = 0;
double z = 0;
double angle = firstValue->computeDegrees();
if (transformValue->operationType() == WebKitCSSTransformValue::RotateXTransformOperation)
x = 1;
else if (transformValue->operationType() == WebKitCSSTransformValue::RotateYTransformOperation)
y = 1;
else
z = 1;
operations.operations().append(RotateTransformOperation::create(x, y, z, angle, getTransformOperationType(transformValue->operationType())));
break;
}
case WebKitCSSTransformValue::Rotate3DTransformOperation: {
if (transformValue->length() < 4)
break;
CSSPrimitiveValue* secondValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(1));
CSSPrimitiveValue* thirdValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(2));
CSSPrimitiveValue* fourthValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(3));
double x = firstValue->getDoubleValue();
double y = secondValue->getDoubleValue();
double z = thirdValue->getDoubleValue();
double angle = fourthValue->computeDegrees();
operations.operations().append(RotateTransformOperation::create(x, y, z, angle, getTransformOperationType(transformValue->operationType())));
break;
}
case WebKitCSSTransformValue::SkewTransformOperation:
case WebKitCSSTransformValue::SkewXTransformOperation:
case WebKitCSSTransformValue::SkewYTransformOperation: {
double angleX = 0;
double angleY = 0;
double angle = firstValue->computeDegrees();
if (transformValue->operationType() == WebKitCSSTransformValue::SkewYTransformOperation)
angleY = angle;
else {
angleX = angle;
if (transformValue->operationType() == WebKitCSSTransformValue::SkewTransformOperation) {
if (transformValue->length() > 1) {
CSSPrimitiveValue* secondValue = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(1));
angleY = secondValue->computeDegrees();
}
}
}
operations.operations().append(SkewTransformOperation::create(angleX, angleY, getTransformOperationType(transformValue->operationType())));
break;
}
case WebKitCSSTransformValue::MatrixTransformOperation: {
if (transformValue->length() < 6)
break;
double a = firstValue->getDoubleValue();
double b = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(1))->getDoubleValue();
double c = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(2))->getDoubleValue();
double d = static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(3))->getDoubleValue();
double e = zoomFactor * static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(4))->getDoubleValue();
double f = zoomFactor * static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(5))->getDoubleValue();
operations.operations().append(MatrixTransformOperation::create(a, b, c, d, e, f));
break;
}
case WebKitCSSTransformValue::Matrix3DTransformOperation: {
if (transformValue->length() < 16)
break;
TransformationMatrix matrix(static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(0))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(1))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(2))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(3))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(4))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(5))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(6))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(7))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(8))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(9))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(10))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(11))->getDoubleValue(),
zoomFactor * static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(12))->getDoubleValue(),
zoomFactor * static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(13))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(14))->getDoubleValue(),
static_cast<CSSPrimitiveValue*>(transformValue->itemWithoutBoundsCheck(15))->getDoubleValue());
operations.operations().append(Matrix3DTransformOperation::create(matrix));
break;
}
case WebKitCSSTransformValue::PerspectiveTransformOperation: {
Length p = Length(0, Fixed);
if (firstValue->isLength())
p = convertToFloatLength(firstValue, style, rootStyle, zoomFactor);
else {
// This is a quirk that should go away when 3d transforms are finalized.
double val = firstValue->getDoubleValue();
p = val >= 0 ? Length(clampToPositiveInteger(val), Fixed) : Length(Undefined);
}
if (p.isUndefined())
return false;
operations.operations().append(PerspectiveTransformOperation::create(p));
break;
}
case WebKitCSSTransformValue::UnknownTransformOperation:
ASSERT_NOT_REACHED();
break;
}
}
outOperations = operations;
return true;
}
#if ENABLE(CSS_FILTERS)
static FilterOperation::OperationType filterOperationForType(WebKitCSSFilterValue::FilterOperationType type)
{
switch (type) {
case WebKitCSSFilterValue::ReferenceFilterOperation:
return FilterOperation::REFERENCE;
case WebKitCSSFilterValue::GrayscaleFilterOperation:
return FilterOperation::GRAYSCALE;
case WebKitCSSFilterValue::SepiaFilterOperation:
return FilterOperation::SEPIA;
case WebKitCSSFilterValue::SaturateFilterOperation:
return FilterOperation::SATURATE;
case WebKitCSSFilterValue::HueRotateFilterOperation:
return FilterOperation::HUE_ROTATE;
case WebKitCSSFilterValue::InvertFilterOperation:
return FilterOperation::INVERT;
case WebKitCSSFilterValue::OpacityFilterOperation:
return FilterOperation::OPACITY;
case WebKitCSSFilterValue::BrightnessFilterOperation:
return FilterOperation::BRIGHTNESS;
case WebKitCSSFilterValue::ContrastFilterOperation:
return FilterOperation::CONTRAST;
case WebKitCSSFilterValue::BlurFilterOperation:
return FilterOperation::BLUR;
case WebKitCSSFilterValue::DropShadowFilterOperation:
return FilterOperation::DROP_SHADOW;
#if ENABLE(CSS_SHADERS)
case WebKitCSSFilterValue::CustomFilterOperation:
return FilterOperation::CUSTOM;
#endif
case WebKitCSSFilterValue::UnknownFilterOperation:
return FilterOperation::NONE;
}
return FilterOperation::NONE;
}
#if ENABLE(CSS_FILTERS) && ENABLE(SVG)
void StyleResolver::loadPendingSVGDocuments()
{
if (!m_style->hasFilter() || m_pendingSVGDocuments.isEmpty())
return;
CachedResourceLoader* cachedResourceLoader = m_element->document()->cachedResourceLoader();
Vector<RefPtr<FilterOperation> >& filterOperations = m_style->mutableFilter().operations();
for (unsigned i = 0; i < filterOperations.size(); ++i) {
RefPtr<FilterOperation> filterOperation = filterOperations.at(i);
if (filterOperation->getOperationType() == FilterOperation::REFERENCE) {
ReferenceFilterOperation* referenceFilter = static_cast<ReferenceFilterOperation*>(filterOperation.get());
WebKitCSSSVGDocumentValue* value = m_pendingSVGDocuments.get(referenceFilter).get();
if (!value)
continue;
CachedSVGDocument* cachedDocument = value->load(cachedResourceLoader);
if (!cachedDocument)
continue;
// Stash the CachedSVGDocument on the reference filter.
referenceFilter->setCachedSVGDocumentReference(adoptPtr(new CachedSVGDocumentReference(cachedDocument)));
}
}
m_pendingSVGDocuments.clear();
}
#endif
#if ENABLE(CSS_SHADERS)
StyleShader* StyleResolver::styleShader(CSSValue* value)
{
if (value->isWebKitCSSShaderValue())
return cachedOrPendingStyleShaderFromValue(static_cast<WebKitCSSShaderValue*>(value));
return 0;
}
StyleShader* StyleResolver::cachedOrPendingStyleShaderFromValue(WebKitCSSShaderValue* value)
{
StyleShader* shader = value->cachedOrPendingShader();
if (shader && shader->isPendingShader())
m_hasPendingShaders = true;
return shader;
}
void StyleResolver::loadPendingShaders()
{
if (!m_style->hasFilter() || !m_hasPendingShaders)
return;
CachedResourceLoader* cachedResourceLoader = m_element->document()->cachedResourceLoader();
Vector<RefPtr<FilterOperation> >& filterOperations = m_style->mutableFilter().operations();
for (unsigned i = 0; i < filterOperations.size(); ++i) {
RefPtr<FilterOperation> filterOperation = filterOperations.at(i);
if (filterOperation->getOperationType() == FilterOperation::CUSTOM) {
CustomFilterOperation* customFilter = static_cast<CustomFilterOperation*>(filterOperation.get());
ASSERT(customFilter->program());
StyleCustomFilterProgram* program = static_cast<StyleCustomFilterProgram*>(customFilter->program());
if (program->vertexShader() && program->vertexShader()->isPendingShader()) {
WebKitCSSShaderValue* shaderValue = static_cast<StylePendingShader*>(program->vertexShader())->cssShaderValue();
program->setVertexShader(shaderValue->cachedShader(cachedResourceLoader));
}
if (program->fragmentShader() && program->fragmentShader()->isPendingShader()) {
WebKitCSSShaderValue* shaderValue = static_cast<StylePendingShader*>(program->fragmentShader())->cssShaderValue();
program->setFragmentShader(shaderValue->cachedShader(cachedResourceLoader));
}
}
}
m_hasPendingShaders = false;
}
static bool sortParametersByNameComparator(const RefPtr<CustomFilterParameter>& a, const RefPtr<CustomFilterParameter>& b)
{
return codePointCompareLessThan(a->name(), b->name());
}
PassRefPtr<CustomFilterParameter> StyleResolver::parseCustomFilterArrayParameter(const String& name, CSSValueList* values)
{
RefPtr<CustomFilterArrayParameter> arrayParameter = CustomFilterArrayParameter::create(name);
for (unsigned i = 0, length = values->length(); i < length; ++i) {
CSSValue* value = values->itemWithoutBoundsCheck(i);
if (!value->isPrimitiveValue())
return 0;
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(value);
if (primitiveValue->primitiveType() != CSSPrimitiveValue::CSS_NUMBER)
return 0;
arrayParameter->addValue(primitiveValue->getDoubleValue());
}
return arrayParameter.release();
}
PassRefPtr<CustomFilterParameter> StyleResolver::parseCustomFilterNumberParameter(const String& name, CSSValueList* values)
{
RefPtr<CustomFilterNumberParameter> numberParameter = CustomFilterNumberParameter::create(name);
for (unsigned i = 0; i < values->length(); ++i) {
CSSValue* value = values->itemWithoutBoundsCheck(i);
if (!value->isPrimitiveValue())
return 0;
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(value);
if (primitiveValue->primitiveType() != CSSPrimitiveValue::CSS_NUMBER)
return 0;
numberParameter->addValue(primitiveValue->getDoubleValue());
}
return numberParameter.release();
}
PassRefPtr<CustomFilterParameter> StyleResolver::parseCustomFilterTransformParameter(const String& name, CSSValueList* values)
{
RefPtr<CustomFilterTransformParameter> transformParameter = CustomFilterTransformParameter::create(name);
TransformOperations operations;
createTransformOperations(values, style(), m_rootElementStyle, operations);
transformParameter->setOperations(operations);
return transformParameter.release();
}
PassRefPtr<CustomFilterParameter> StyleResolver::parseCustomFilterParameter(const String& name, CSSValue* parameterValue)
{
// FIXME: Implement other parameters types parsing.
// booleans: https://bugs.webkit.org/show_bug.cgi?id=76438
// textures: https://bugs.webkit.org/show_bug.cgi?id=71442
// mat2, mat3, mat4: https://bugs.webkit.org/show_bug.cgi?id=71444
// Number parameters are wrapped inside a CSSValueList and all
// the other functions values inherit from CSSValueList.
if (!parameterValue->isValueList())
return 0;
CSSValueList* values = static_cast<CSSValueList*>(parameterValue);
if (!values->length())
return 0;
if (parameterValue->isWebKitCSSArrayFunctionValue())
return parseCustomFilterArrayParameter(name, values);
// If the first value of the list is a transform function,
// then we could safely assume that all the remaining items
// are transforms. parseCustomFilterTransformParameter will
// return 0 if that assumption is incorrect.
if (values->itemWithoutBoundsCheck(0)->isWebKitCSSTransformValue())
return parseCustomFilterTransformParameter(name, values);
// We can have only arrays of booleans or numbers, so use the first value to choose between those two.
// We need up to 4 values (all booleans or all numbers).
if (!values->itemWithoutBoundsCheck(0)->isPrimitiveValue() || values->length() > 4)
return 0;
CSSPrimitiveValue* firstPrimitiveValue = static_cast<CSSPrimitiveValue*>(values->itemWithoutBoundsCheck(0));
if (firstPrimitiveValue->primitiveType() == CSSPrimitiveValue::CSS_NUMBER)
return parseCustomFilterNumberParameter(name, values);
// FIXME: Implement the boolean array parameter here.
// https://bugs.webkit.org/show_bug.cgi?id=76438
return 0;
}
bool StyleResolver::parseCustomFilterParameterList(CSSValue* parametersValue, CustomFilterParameterList& parameterList)
{
HashSet<String> knownParameterNames;
CSSValueListIterator parameterIterator(parametersValue);
for (; parameterIterator.hasMore(); parameterIterator.advance()) {
if (!parameterIterator.value()->isValueList())
return false;
CSSValueListIterator iterator(parameterIterator.value());
if (!iterator.isPrimitiveValue())
return false;
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(iterator.value());
if (primitiveValue->primitiveType() != CSSPrimitiveValue::CSS_STRING)
return false;
String name = primitiveValue->getStringValue();
// Do not allow duplicate parameter names.
if (knownParameterNames.contains(name))
return false;
knownParameterNames.add(name);
iterator.advance();
if (!iterator.hasMore())
return false;
RefPtr<CustomFilterParameter> parameter = parseCustomFilterParameter(name, iterator.value());
if (!parameter)
return false;
parameterList.append(parameter.release());
}
// Make sure we sort the parameters before passing them down to the CustomFilterOperation.
std::sort(parameterList.begin(), parameterList.end(), sortParametersByNameComparator);
return true;
}
PassRefPtr<CustomFilterOperation> StyleResolver::createCustomFilterOperation(WebKitCSSFilterValue* filterValue)
{
ASSERT(filterValue->length());
CSSValue* shadersValue = filterValue->itemWithoutBoundsCheck(0);
ASSERT(shadersValue->isValueList());
CSSValueList* shadersList = static_cast<CSSValueList*>(shadersValue);
unsigned shadersListLength = shadersList->length();
ASSERT(shadersListLength);
RefPtr<StyleShader> vertexShader = styleShader(shadersList->itemWithoutBoundsCheck(0));
RefPtr<StyleShader> fragmentShader;
CustomFilterProgramType programType = PROGRAM_TYPE_BLENDS_ELEMENT_TEXTURE;
CustomFilterProgramMixSettings mixSettings;
if (shadersListLength > 1) {
CSSValue* fragmentShaderOrMixFunction = shadersList->itemWithoutBoundsCheck(1);
if (fragmentShaderOrMixFunction->isWebKitCSSMixFunctionValue()) {
WebKitCSSMixFunctionValue* mixFunction = static_cast<WebKitCSSMixFunctionValue*>(fragmentShaderOrMixFunction);
CSSValueListIterator iterator(mixFunction);
ASSERT(mixFunction->length());
fragmentShader = styleShader(iterator.value());
iterator.advance();
ASSERT(mixFunction->length() <= 3);
while (iterator.hasMore()) {
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(iterator.value());
if (CSSParser::isBlendMode(primitiveValue->getIdent()))
mixSettings.blendMode = *primitiveValue;
else if (CSSParser::isCompositeOperator(primitiveValue->getIdent()))
mixSettings.compositeOperator = *primitiveValue;
else
ASSERT_NOT_REACHED();
iterator.advance();
}
} else {
programType = PROGRAM_TYPE_NO_ELEMENT_TEXTURE;
fragmentShader = styleShader(fragmentShaderOrMixFunction);
}
}
unsigned meshRows = 1;
unsigned meshColumns = 1;
CustomFilterMeshBoxType meshBoxType = MeshBoxTypeFilter;
CustomFilterMeshType meshType = MeshTypeAttached;
CSSValue* parametersValue = 0;
if (filterValue->length() > 1) {
CSSValueListIterator iterator(filterValue->itemWithoutBoundsCheck(1));
// The second value might be the mesh box or the list of parameters:
// If it starts with a number or any of the mesh-box identifiers it is
// the mesh-box list, if not it means it is the parameters list.
if (iterator.hasMore() && iterator.isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(iterator.value());
if (primitiveValue->isNumber()) {
// If only one integer value is specified, it will set both
// the rows and the columns.
meshColumns = meshRows = primitiveValue->getIntValue();
iterator.advance();
// Try to match another number for the rows.
if (iterator.hasMore() && iterator.isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(iterator.value());
if (primitiveValue->isNumber()) {
meshRows = primitiveValue->getIntValue();
iterator.advance();
}
}
}
}
if (iterator.hasMore() && iterator.isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(iterator.value());
if (primitiveValue->getIdent() == CSSValueBorderBox
|| primitiveValue->getIdent() == CSSValuePaddingBox
|| primitiveValue->getIdent() == CSSValueContentBox
|| primitiveValue->getIdent() == CSSValueFilterBox) {
meshBoxType = *primitiveValue;
iterator.advance();
}
}
if (iterator.hasMore() && iterator.isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(iterator.value());
if (primitiveValue->getIdent() == CSSValueDetached) {
meshType = MeshTypeDetached;
iterator.advance();
}
}
if (!iterator.index()) {
// If no value was consumed from the mesh value, then it is just a parameter list, meaning that we end up
// having just two CSSListValues: list of shaders and list of parameters.
ASSERT(filterValue->length() == 2);
parametersValue = filterValue->itemWithoutBoundsCheck(1);
}
}
if (filterValue->length() > 2 && !parametersValue)
parametersValue = filterValue->itemWithoutBoundsCheck(2);
CustomFilterParameterList parameterList;
if (parametersValue && !parseCustomFilterParameterList(parametersValue, parameterList))
return 0;
RefPtr<StyleCustomFilterProgram> program = StyleCustomFilterProgram::create(vertexShader.release(), fragmentShader.release(), programType, mixSettings, meshType);
return CustomFilterOperation::create(program.release(), parameterList, meshRows, meshColumns, meshBoxType, meshType);
}
#endif
bool StyleResolver::createFilterOperations(CSSValue* inValue, RenderStyle* style, RenderStyle* rootStyle, FilterOperations& outOperations)
{
ASSERT(outOperations.isEmpty());
if (!inValue)
return false;
if (inValue->isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(inValue);
if (primitiveValue->getIdent() == CSSValueNone)
return true;
}
if (!inValue->isValueList())
return false;
float zoomFactor = style ? style->effectiveZoom() : 1;
FilterOperations operations;
for (CSSValueListIterator i = inValue; i.hasMore(); i.advance()) {
CSSValue* currValue = i.value();
if (!currValue->isWebKitCSSFilterValue())
continue;
WebKitCSSFilterValue* filterValue = static_cast<WebKitCSSFilterValue*>(i.value());
FilterOperation::OperationType operationType = filterOperationForType(filterValue->operationType());
#if ENABLE(CSS_SHADERS)
if (operationType == FilterOperation::VALIDATED_CUSTOM) {
// ValidatedCustomFilterOperation is not supposed to end up in the RenderStyle.
ASSERT_NOT_REACHED();
continue;
}
if (operationType == FilterOperation::CUSTOM) {
RefPtr<CustomFilterOperation> operation = createCustomFilterOperation(filterValue);
if (!operation)
return false;
operations.operations().append(operation);
continue;
}
#endif
if (operationType == FilterOperation::REFERENCE) {
#if ENABLE(SVG)
if (filterValue->length() != 1)
continue;
CSSValue* argument = filterValue->itemWithoutBoundsCheck(0);
if (!argument->isWebKitCSSSVGDocumentValue())
continue;
WebKitCSSSVGDocumentValue* svgDocumentValue = static_cast<WebKitCSSSVGDocumentValue*>(argument);
KURL url = m_element->document()->completeURL(svgDocumentValue->url());
RefPtr<ReferenceFilterOperation> operation = ReferenceFilterOperation::create(svgDocumentValue->url(), url.fragmentIdentifier(), operationType);
if (SVGURIReference::isExternalURIReference(svgDocumentValue->url(), m_element->document())) {
if (!svgDocumentValue->loadRequested())
m_pendingSVGDocuments.set(operation.get(), svgDocumentValue);
else if (svgDocumentValue->cachedSVGDocument())
operation->setCachedSVGDocumentReference(adoptPtr(new CachedSVGDocumentReference(svgDocumentValue->cachedSVGDocument())));
}
operations.operations().append(operation);
#endif
continue;
}
// Check that all parameters are primitive values, with the
// exception of drop shadow which has a ShadowValue parameter.
if (operationType != FilterOperation::DROP_SHADOW) {
bool haveNonPrimitiveValue = false;
for (unsigned j = 0; j < filterValue->length(); ++j) {
if (!filterValue->itemWithoutBoundsCheck(j)->isPrimitiveValue()) {
haveNonPrimitiveValue = true;
break;
}
}
if (haveNonPrimitiveValue)
continue;
}
CSSPrimitiveValue* firstValue = filterValue->length() ? static_cast<CSSPrimitiveValue*>(filterValue->itemWithoutBoundsCheck(0)) : 0;
switch (filterValue->operationType()) {
case WebKitCSSFilterValue::GrayscaleFilterOperation:
case WebKitCSSFilterValue::SepiaFilterOperation:
case WebKitCSSFilterValue::SaturateFilterOperation: {
double amount = 1;
if (filterValue->length() == 1) {
amount = firstValue->getDoubleValue();
if (firstValue->isPercentage())
amount /= 100;
}
operations.operations().append(BasicColorMatrixFilterOperation::create(amount, operationType));
break;
}
case WebKitCSSFilterValue::HueRotateFilterOperation: {
double angle = 0;
if (filterValue->length() == 1)
angle = firstValue->computeDegrees();
operations.operations().append(BasicColorMatrixFilterOperation::create(angle, operationType));
break;
}
case WebKitCSSFilterValue::InvertFilterOperation:
case WebKitCSSFilterValue::BrightnessFilterOperation:
case WebKitCSSFilterValue::ContrastFilterOperation:
case WebKitCSSFilterValue::OpacityFilterOperation: {
double amount = (filterValue->operationType() == WebKitCSSFilterValue::BrightnessFilterOperation) ? 0 : 1;
if (filterValue->length() == 1) {
amount = firstValue->getDoubleValue();
if (firstValue->isPercentage())
amount /= 100;
}
operations.operations().append(BasicComponentTransferFilterOperation::create(amount, operationType));
break;
}
case WebKitCSSFilterValue::BlurFilterOperation: {
Length stdDeviation = Length(0, Fixed);
if (filterValue->length() >= 1)
stdDeviation = convertToFloatLength(firstValue, style, rootStyle, zoomFactor);
if (stdDeviation.isUndefined())
return false;
operations.operations().append(BlurFilterOperation::create(stdDeviation, operationType));
break;
}
case WebKitCSSFilterValue::DropShadowFilterOperation: {
if (filterValue->length() != 1)
return false;
CSSValue* cssValue = filterValue->itemWithoutBoundsCheck(0);
if (!cssValue->isShadowValue())
continue;
ShadowValue* item = static_cast<ShadowValue*>(cssValue);
IntPoint location(item->x->computeLength<int>(style, rootStyle, zoomFactor),
item->y->computeLength<int>(style, rootStyle, zoomFactor));
int blur = item->blur ? item->blur->computeLength<int>(style, rootStyle, zoomFactor) : 0;
Color color;
if (item->color)
color = colorFromPrimitiveValue(item->color.get());
operations.operations().append(DropShadowFilterOperation::create(location, blur, color.isValid() ? color : Color::transparent, operationType));
break;
}
case WebKitCSSFilterValue::UnknownFilterOperation:
default:
ASSERT_NOT_REACHED();
break;
}
}
outOperations = operations;
return true;
}
#endif
PassRefPtr<StyleImage> StyleResolver::loadPendingImage(StylePendingImage* pendingImage)
{
CachedResourceLoader* cachedResourceLoader = m_element->document()->cachedResourceLoader();
if (pendingImage->cssImageValue()) {
CSSImageValue* imageValue = pendingImage->cssImageValue();
return imageValue->cachedImage(cachedResourceLoader);
}
if (pendingImage->cssImageGeneratorValue()) {
CSSImageGeneratorValue* imageGeneratorValue = pendingImage->cssImageGeneratorValue();
imageGeneratorValue->loadSubimages(cachedResourceLoader);
return StyleGeneratedImage::create(imageGeneratorValue);
}
#if ENABLE(CSS_IMAGE_SET)
if (pendingImage->cssImageSetValue()) {
CSSImageSetValue* imageSetValue = pendingImage->cssImageSetValue();
return imageSetValue->cachedImageSet(cachedResourceLoader);
}
#endif
return 0;
}
void StyleResolver::loadPendingImages()
{
if (m_pendingImageProperties.isEmpty())
return;
PendingImagePropertyMap::const_iterator::Keys end = m_pendingImageProperties.end().keys();
for (PendingImagePropertyMap::const_iterator::Keys it = m_pendingImageProperties.begin().keys(); it != end; ++it) {
CSSPropertyID currentProperty = *it;
switch (currentProperty) {
case CSSPropertyBackgroundImage: {
for (FillLayer* backgroundLayer = m_style->accessBackgroundLayers(); backgroundLayer; backgroundLayer = backgroundLayer->next()) {
if (backgroundLayer->image() && backgroundLayer->image()->isPendingImage())
backgroundLayer->setImage(loadPendingImage(static_cast<StylePendingImage*>(backgroundLayer->image())));
}
break;
}
case CSSPropertyContent: {
for (ContentData* contentData = const_cast<ContentData*>(m_style->contentData()); contentData; contentData = contentData->next()) {
if (contentData->isImage()) {
StyleImage* image = static_cast<ImageContentData*>(contentData)->image();
if (image->isPendingImage()) {
RefPtr<StyleImage> loadedImage = loadPendingImage(static_cast<StylePendingImage*>(image));
if (loadedImage)
static_cast<ImageContentData*>(contentData)->setImage(loadedImage.release());
}
}
}
break;
}
case CSSPropertyCursor: {
if (CursorList* cursorList = m_style->cursors()) {
for (size_t i = 0; i < cursorList->size(); ++i) {
CursorData& currentCursor = cursorList->at(i);
if (StyleImage* image = currentCursor.image()) {
if (image->isPendingImage())
currentCursor.setImage(loadPendingImage(static_cast<StylePendingImage*>(image)));
}
}
}
break;
}
case CSSPropertyListStyleImage: {
if (m_style->listStyleImage() && m_style->listStyleImage()->isPendingImage())
m_style->setListStyleImage(loadPendingImage(static_cast<StylePendingImage*>(m_style->listStyleImage())));
break;
}
case CSSPropertyBorderImageSource: {
if (m_style->borderImageSource() && m_style->borderImageSource()->isPendingImage())
m_style->setBorderImageSource(loadPendingImage(static_cast<StylePendingImage*>(m_style->borderImageSource())));
break;
}
case CSSPropertyWebkitBoxReflect: {
if (StyleReflection* reflection = m_style->boxReflect()) {
const NinePieceImage& maskImage = reflection->mask();
if (maskImage.image() && maskImage.image()->isPendingImage()) {
RefPtr<StyleImage> loadedImage = loadPendingImage(static_cast<StylePendingImage*>(maskImage.image()));
reflection->setMask(NinePieceImage(loadedImage.release(), maskImage.imageSlices(), maskImage.fill(), maskImage.borderSlices(), maskImage.outset(), maskImage.horizontalRule(), maskImage.verticalRule()));
}
}
break;
}
case CSSPropertyWebkitMaskBoxImageSource: {
if (m_style->maskBoxImageSource() && m_style->maskBoxImageSource()->isPendingImage())
m_style->setMaskBoxImageSource(loadPendingImage(static_cast<StylePendingImage*>(m_style->maskBoxImageSource())));
break;
}
case CSSPropertyWebkitMaskImage: {
for (FillLayer* maskLayer = m_style->accessMaskLayers(); maskLayer; maskLayer = maskLayer->next()) {
if (maskLayer->image() && maskLayer->image()->isPendingImage())
maskLayer->setImage(loadPendingImage(static_cast<StylePendingImage*>(maskLayer->image())));
}
break;
}
default:
ASSERT_NOT_REACHED();
}
}
m_pendingImageProperties.clear();
}
void StyleResolver::loadPendingResources()
{
// Start loading images referenced by this style.
loadPendingImages();
#if ENABLE(CSS_SHADERS)
// Start loading the shaders referenced by this style.
loadPendingShaders();
#endif
#if ENABLE(CSS_FILTERS) && ENABLE(SVG)
// Start loading the SVG Documents referenced by this style.
loadPendingSVGDocuments();
#endif
}
void StyleResolver::collectFeatures()
{
m_features.clear();
// Collect all ids and rules using sibling selectors (:first-child and similar)
// in the current set of stylesheets. Style sharing code uses this information to reject
// sharing candidates.
m_features.add(defaultStyle->features());
m_features.add(m_authorStyle->features());
if (document()->isViewSource()) {
if (!defaultViewSourceStyle)
loadViewSourceStyle();
m_features.add(defaultViewSourceStyle->features());
}
if (m_scopeResolver)
m_scopeResolver->collectFeaturesTo(m_features);
if (m_userStyle)
m_features.add(m_userStyle->features());
m_siblingRuleSet = makeRuleSet(m_features.siblingRules);
m_uncommonAttributeRuleSet = makeRuleSet(m_features.uncommonAttributeRules);
}
void StyleResolver::MatchedProperties::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
info.addMember(properties);
}
void StyleResolver::MatchedPropertiesCacheItem::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
info.addMember(matchedProperties);
}
void MediaQueryResult::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
info.addMember(m_expression);
}
void StyleResolver::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
info.addMember(m_style);
info.addMember(m_authorStyle);
info.addMember(m_userStyle);
info.addMember(m_siblingRuleSet);
info.addMember(m_uncommonAttributeRuleSet);
info.addMember(m_keyframesRuleMap);
info.addMember(m_matchedPropertiesCache);
info.addMember(m_matchedRules);
info.addMember(m_ruleList);
info.addMember(m_pendingImageProperties);
info.addMember(m_lineHeightValue);
info.addMember(m_viewportDependentMediaQueryResults);
info.addMember(m_styleRuleToCSSOMWrapperMap);
info.addMember(m_styleSheetCSSOMWrapperSet);
#if ENABLE(CSS_FILTERS) && ENABLE(SVG)
info.addMember(m_pendingSVGDocuments);
#endif
info.addMember(m_scopeResolver);
// FIXME: move this to a place where it would be called only once?
info.addMember(defaultStyle);
info.addMember(defaultQuirksStyle);
info.addMember(defaultPrintStyle);
info.addMember(defaultViewSourceStyle);
}
} // namespace WebCore