PassRefPtr<ShadowList> StyleBuilderConverter::convertShadow(StyleResolverState& state, CSSValue* value)
{
if (value->isPrimitiveValue()) {
ASSERT(toCSSPrimitiveValue(value)->getValueID() == CSSValueNone);
return PassRefPtr<ShadowList>();
}
const CSSValueList* valueList = toCSSValueList(value);
size_t shadowCount = valueList->length();
ShadowDataVector shadows;
for (size_t i = 0; i < shadowCount; ++i) {
const CSSShadowValue* item = toCSSShadowValue(valueList->item(i));
float x = item->x->computeLength<float>(state.cssToLengthConversionData());
float y = item->y->computeLength<float>(state.cssToLengthConversionData());
float blur = item->blur ? item->blur->computeLength<float>(state.cssToLengthConversionData()) : 0;
float spread = item->spread ? item->spread->computeLength<float>(state.cssToLengthConversionData()) : 0;
ShadowStyle shadowStyle = item->style && item->style->getValueID() == CSSValueInset ? Inset : Normal;
Color color;
if (item->color)
color = convertColor(state, item->color.get());
else
color = state.style()->color();
shadows.append(ShadowData(FloatPoint(x, y), blur, spread, shadowStyle, color));
}
return ShadowList::adopt(shadows);
}
ShadowData ShadowData::blend(const ShadowData& from, double progress, const Color& currentColor) const
{
ASSERT(style() == from.style());
return ShadowData(blink::blend(from.location(), location(), progress),
clampTo(blink::blend(from.blur(), blur(), progress), 0.0f),
blink::blend(from.spread(), spread(), progress),
style(),
blink::blend(from.color().resolve(currentColor), color().resolve(currentColor), progress));
}
ShadowData ShadowData::blend(const ShadowData& from, double progress) const
{
if (style() != from.style())
return *this;
return ShadowData(WebCore::blend(from.location(), location(), progress),
clampTo<int>(WebCore::blend(from.blur(), blur(), progress), 0),
WebCore::blend(from.spread(), spread(), progress),
style(),
WebCore::blend(from.color(), color(), progress));
}
