PassRefPtr<Interpolation> StringKeyframe::CSSPropertySpecificKeyframe::maybeCreateInterpolation(PropertyHandle propertyHandle, Keyframe::PropertySpecificKeyframe& end, Element* element, const ComputedStyle* baseStyle) const
{
const InterpolationTypes* applicableTypes = applicableTypesForProperty(propertyHandle);
if (applicableTypes)
return InvalidatableInterpolation::create(propertyHandle, *applicableTypes, *this, end);
// TODO(alancutter): Remove the remainder of this function.
// FIXME: Refactor this into a generic piece that lives in InterpolationEffect, and a template parameter specific converter.
CSSPropertyID property = propertyHandle.isCSSProperty() ? propertyHandle.cssProperty() : propertyHandle.presentationAttribute();
CSSValue* fromCSSValue = m_value.get();
CSSValue* toCSSValue = toCSSPropertySpecificKeyframe(end).value();
InterpolationRange range = RangeAll;
// FIXME: Remove this flag once we can rely on legacy's behaviour being correct.
bool forceDefaultInterpolation = false;
// FIXME: Remove this check once neutral keyframes are implemented in StringKeyframes.
if (!fromCSSValue || !toCSSValue)
return DeferredLegacyStyleInterpolation::create(fromCSSValue, toCSSValue, property);
ASSERT(fromCSSValue && toCSSValue);
if (!CSSPropertyMetadata::isInterpolableProperty(property)) {
if (fromCSSValue == toCSSValue)
return ConstantStyleInterpolation::create(fromCSSValue, property);
return nullptr;
}
if (fromCSSValue->isCSSWideKeyword() || toCSSValue->isCSSWideKeyword())
return createLegacyStyleInterpolation(property, end, element, baseStyle);
switch (property) {
case CSSPropertyFontSize:
if (LengthStyleInterpolation::canCreateFrom(*fromCSSValue) && LengthStyleInterpolation::canCreateFrom(*toCSSValue))
return LengthStyleInterpolation::create(*fromCSSValue, *toCSSValue, property, RangeNonNegative);
// FIXME: Handle keywords e.g. 'smaller', 'larger'.
if (property == CSSPropertyFontSize)
return createLegacyStyleInterpolation(property, end, element, baseStyle);
// FIXME: Handle keywords e.g. 'baseline', 'sub'.
if (property == CSSPropertyBaselineShift)
return createLegacyStyleInterpolation(property, end, element, baseStyle);
break;
case CSSPropertyMotionRotation: {
RefPtr<Interpolation> interpolation = DoubleStyleInterpolation::maybeCreateFromMotionRotation(*fromCSSValue, *toCSSValue, property);
if (interpolation)
return interpolation.release();
break;
}
case CSSPropertyVisibility:
if (VisibilityStyleInterpolation::canCreateFrom(*fromCSSValue) && VisibilityStyleInterpolation::canCreateFrom(*toCSSValue) && (VisibilityStyleInterpolation::isVisible(*fromCSSValue) || VisibilityStyleInterpolation::isVisible(*toCSSValue)))
return VisibilityStyleInterpolation::create(*fromCSSValue, *toCSSValue, property);
break;
case CSSPropertyBorderBottomLeftRadius:
case CSSPropertyBorderBottomRightRadius:
case CSSPropertyBorderTopLeftRadius:
case CSSPropertyBorderTopRightRadius:
if (LengthPairStyleInterpolation::canCreateFrom(*fromCSSValue) && LengthPairStyleInterpolation::canCreateFrom(*toCSSValue))
return LengthPairStyleInterpolation::create(*fromCSSValue, *toCSSValue, property, RangeNonNegative);
break;
case CSSPropertyPerspectiveOrigin:
case CSSPropertyTransformOrigin: {
RefPtr<Interpolation> interpolation = ListStyleInterpolation<LengthStyleInterpolation>::maybeCreateFromList(*fromCSSValue, *toCSSValue, property, range);
if (interpolation)
return interpolation.release();
// FIXME: Handle keywords: top, right, left, center, bottom
return createLegacyStyleInterpolation(property, end, element, baseStyle);
}
case CSSPropertyClip: {
if (LengthBoxStyleInterpolation::usesDefaultInterpolation(*fromCSSValue, *toCSSValue)) {
forceDefaultInterpolation = true;
break;
}
RefPtr<Interpolation> interpolation = LengthBoxStyleInterpolation::maybeCreateFrom(*fromCSSValue, *toCSSValue, property);
if (interpolation)
return interpolation.release();
break;
}
case CSSPropertyBorderImageSlice:
case CSSPropertyWebkitMaskBoxImageSlice: {
RefPtr<Interpolation> interpolation = ImageSliceStyleInterpolation::maybeCreate(*fromCSSValue, *toCSSValue, property);
if (interpolation)
return interpolation.release();
if (ImageSliceStyleInterpolation::usesDefaultInterpolation(*fromCSSValue, *toCSSValue))
forceDefaultInterpolation = true;
break;
}
case CSSPropertyWebkitFilter:
case CSSPropertyBackdropFilter: {
RefPtr<Interpolation> interpolation = FilterStyleInterpolation::maybeCreateList(*fromCSSValue, *toCSSValue, property);
if (interpolation)
return interpolation.release();
// FIXME: Support drop shadow interpolation.
return createLegacyStyleInterpolation(property, end, element, baseStyle);
break;
}
case CSSPropertyTranslate: {
RefPtr<Interpolation> interpolation = ListStyleInterpolation<LengthStyleInterpolation>::maybeCreateFromList(*fromCSSValue, *toCSSValue, property, range);
if (interpolation)
return interpolation.release();
// TODO(soonm): Legacy mode is used when from and to cssvaluelist length does not match.
return createLegacyStyleInterpolation(property, end, element, baseStyle);
break;
}
case CSSPropertyScale: {
RefPtr<Interpolation> interpolation = ListStyleInterpolation<DoubleStyleInterpolation>::maybeCreateFromList(*fromCSSValue, *toCSSValue, property, range);
if (interpolation)
return interpolation.release();
// TODO(soonm): Legacy mode is used when from and to cssvaluelist length does not match.
return createLegacyStyleInterpolation(property, end, element, baseStyle);
break;
}
default:
// Fall back to LegacyStyleInterpolation.
return createLegacyStyleInterpolation(property, end, element, baseStyle);
break;
}
if (fromCSSValue == toCSSValue)
return ConstantStyleInterpolation::create(fromCSSValue, property);
if (!forceDefaultInterpolation) {
ASSERT(AnimatableValue::usesDefaultInterpolation(
StyleResolver::createAnimatableValueSnapshot(*element, baseStyle, property, fromCSSValue).get(),
StyleResolver::createAnimatableValueSnapshot(*element, baseStyle, property, toCSSValue).get()));
}
return nullptr;
}
PassOwnPtr<Keyframe::PropertySpecificKeyframe> StringKeyframe::createPropertySpecificKeyframe(PropertyHandle property) const
{
if (property.isCSSProperty())
return adoptPtr(new CSSPropertySpecificKeyframe(offset(), &easing(), cssPropertyValue(property.cssProperty()), composite()));
if (property.isPresentationAttribute())
return adoptPtr(new CSSPropertySpecificKeyframe(offset(), &easing(), presentationAttributeValue(property.presentationAttribute()), composite()));
ASSERT(property.isSVGAttribute());
return adoptPtr(new SVGPropertySpecificKeyframe(offset(), &easing(), svgPropertyValue(property.svgAttribute()), composite()));
}