static bool pseudoStyleCacheIsInvalid(RenderObject* renderer, RenderStyle* newStyle)
{
const RenderStyle* currentStyle = renderer->style();
const PseudoStyleCache* pseudoStyleCache = currentStyle->cachedPseudoStyles();
if (!pseudoStyleCache)
return false;
size_t cacheSize = pseudoStyleCache->size();
for (size_t i = 0; i < cacheSize; ++i) {
RefPtr<RenderStyle> newPseudoStyle;
PseudoId pseudoId = pseudoStyleCache->at(i)->styleType();
if (pseudoId == FIRST_LINE || pseudoId == FIRST_LINE_INHERITED)
newPseudoStyle = renderer->uncachedFirstLineStyle(newStyle);
else
newPseudoStyle = renderer->getUncachedPseudoStyle(PseudoStyleRequest(pseudoId), newStyle, newStyle);
if (!newPseudoStyle)
return true;
if (*newPseudoStyle != *pseudoStyleCache->at(i)) {
if (pseudoId < FIRST_INTERNAL_PSEUDOID)
newStyle->setHasPseudoStyle(pseudoId);
newStyle->addCachedPseudoStyle(newPseudoStyle);
if (pseudoId == FIRST_LINE || pseudoId == FIRST_LINE_INHERITED) {
// FIXME: We should do an actual diff to determine whether a repaint vs. layout
// is needed, but for now just assume a layout will be required. The diff code
// in RenderObject::setStyle would need to be factored out so that it could be reused.
renderer->setNeedsLayoutAndPrefWidthsRecalc();
}
return true;
}
}
return false;
}
PassRefPtr<RenderStyle> RenderScrollbar::getScrollbarPseudoStyle(ScrollbarPart partType, PseudoId pseudoId)
{
if (!owningRenderer())
return 0;
RefPtr<RenderStyle> result = owningRenderer()->getUncachedPseudoStyle(PseudoStyleRequest(pseudoId, this, partType), &owningRenderer()->style());
// Scrollbars for root frames should always have background color
// unless explicitly specified as transparent. So we force it.
// This is because WebKit assumes scrollbar to be always painted and missing background
// causes visual artifact like non-repainted dirty region.
if (result && m_owningFrame && m_owningFrame->view() && !m_owningFrame->view()->isTransparent() && !result->hasBackground())
result->setBackgroundColor(Color::white);
return result;
}
static bool pseudoStyleCacheIsInvalid(RenderElement* renderer, RenderStyle* newStyle)
{
const RenderStyle& currentStyle = renderer->style();
const PseudoStyleCache* pseudoStyleCache = currentStyle.cachedPseudoStyles();
if (!pseudoStyleCache)
return false;
for (auto& cache : *pseudoStyleCache) {
PseudoId pseudoId = cache->styleType();
std::unique_ptr<RenderStyle> newPseudoStyle = renderer->getUncachedPseudoStyle(PseudoStyleRequest(pseudoId), newStyle, newStyle);
if (!newPseudoStyle)
return true;
if (*newPseudoStyle != *cache) {
newStyle->addCachedPseudoStyle(WTFMove(newPseudoStyle));
return true;
}
}
return false;
}
