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/*
* Copyright (C) 2007, 2008, 2009, 2013, 2016 Apple Inc. All rights reserved.
* Copyright (C) 2012, 2013 Adobe Systems Incorporated. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "CSSPropertyAnimation.h"
#include "AnimationUtilities.h"
#include "CSSComputedStyleDeclaration.h"
#include "CSSCrossfadeValue.h"
#include "CSSFilterImageValue.h"
#include "CSSImageGeneratorValue.h"
#include "CSSImageValue.h"
#include "CSSPrimitiveValue.h"
#include "CSSPropertyBlendingClient.h"
#include "CSSPropertyNames.h"
#include "CachedImage.h"
#include "CalculationValue.h"
#include "ColorBlending.h"
#include "ContentData.h"
#include "FloatConversion.h"
#include "FontCascade.h"
#include "FontSelectionAlgorithm.h"
#include "FontTaggedSettings.h"
#include "GapLength.h"
#include "GridPositionsResolver.h"
#include "IdentityTransformOperation.h"
#include "LengthPoint.h"
#include "Logging.h"
#include "Matrix3DTransformOperation.h"
#include "MatrixTransformOperation.h"
#include "OffsetRotation.h"
#include "PathOperation.h"
#include "RenderBox.h"
#include "RenderStyle.h"
#include "StyleCachedImage.h"
#include "StyleGeneratedImage.h"
#include "StylePropertyShorthand.h"
#include "StyleResolver.h"
#include "TabSize.h"
#include <algorithm>
#include <memory>
#include <wtf/MathExtras.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/Noncopyable.h>
#include <wtf/PointerComparison.h>
#include <wtf/RefCounted.h>
#include <wtf/text/TextStream.h>
namespace WebCore {
struct CSSPropertyBlendingContext : BlendingContext {
const CSSPropertyBlendingClient* client { nullptr };
CSSPropertyBlendingContext(double progress, bool isDiscrete, CompositeOperation compositeOperation, const CSSPropertyBlendingClient* client)
: BlendingContext(progress, isDiscrete, compositeOperation)
, client(client)
{
}
};
static inline int blendFunc(int from, int to, const CSSPropertyBlendingContext& context)
{
return blend(from, to, context);
}
static inline double blendFunc(double from, double to, const CSSPropertyBlendingContext& context)
{
return blend(from, to, context);
}
static inline float blendFunc(float from, float to, const CSSPropertyBlendingContext& context)
{
if (context.compositeOperation == CompositeOperation::Replace)
return narrowPrecisionToFloat(from + (to - from) * context.progress);
return narrowPrecisionToFloat(from + from + (to - from) * context.progress);
}
static inline Color blendFunc(const Color& from, const Color& to, const CSSPropertyBlendingContext& context)
{
return blend(from, to, context);
}
static inline Length blendFunc(const Length& from, const Length& to, const CSSPropertyBlendingContext& context, ValueRange valueRange = ValueRange::All)
{
return blend(from, to, context, valueRange);
}
static inline GapLength blendFunc(const GapLength& from, const GapLength& to, const CSSPropertyBlendingContext& context)
{
if (from.isNormal() || to.isNormal())
return context.progress < 0.5 ? from : to;
return blend(from.length(), to.length(), context, ValueRange::NonNegative);
}
static inline TabSize blendFunc(const TabSize& from, const TabSize& to, const CSSPropertyBlendingContext& context)
{
auto blendedValue = blend(from.value(), to.value(), context);
return { blendedValue < 0 ? 0 : blendedValue, from.isSpaces() ? SpaceValueType : LengthValueType };
}
static inline LengthSize blendFunc(const LengthSize& from, const LengthSize& to, const CSSPropertyBlendingContext& context)
{
return blend(from, to, context, ValueRange::NonNegative);
}
static inline LengthPoint blendFunc(const LengthPoint& from, const LengthPoint& to, const CSSPropertyBlendingContext& context)
{
return blend(from, to, context);
}
static inline ShadowStyle blendFunc(ShadowStyle from, ShadowStyle to, const CSSPropertyBlendingContext& context)
{
if (from == to)
return to;
double fromVal = from == ShadowStyle::Normal ? 1 : 0;
double toVal = to == ShadowStyle::Normal ? 1 : 0;
double result = blendFunc(fromVal, toVal, context);
return result > 0 ? ShadowStyle::Normal : ShadowStyle::Inset;
}
static inline std::unique_ptr<ShadowData> blendFunc(const ShadowData* from, const ShadowData* to, const CSSPropertyBlendingContext& context)
{
ASSERT(from && to);
ASSERT(from->style() == to->style());
return makeUnique<ShadowData>(blend(from->location(), to->location(), context),
blend(from->radius(), to->radius(), context, ValueRange::NonNegative),
blend(from->spread(), to->spread(), context),
blendFunc(from->style(), to->style(), context),
from->isWebkitBoxShadow(),
blend(from->color(), to->color(), context));
}
static inline TransformOperations blendFunc(const TransformOperations& from, const TransformOperations& to, const CSSPropertyBlendingContext& context)
{
if (context.compositeOperation == CompositeOperation::Add) {
ASSERT(context.progress == 1.0);
TransformOperations resultOperations;
for (auto operation : from.operations())
resultOperations.operations().append(operation);
for (auto operation : to.operations())
resultOperations.operations().append(operation);
return resultOperations;
}
if (context.client->transformFunctionListsMatch())
return to.blendByMatchingOperations(from, context);
return to.blendByUsingMatrixInterpolation(from, context, is<RenderBox>(context.client->renderer()) ? downcast<RenderBox>(*context.client->renderer()).borderBoxRect().size() : LayoutSize());
}
static RefPtr<ScaleTransformOperation> blendFunc(ScaleTransformOperation* from, ScaleTransformOperation* to, const CSSPropertyBlendingContext& context)
{
if (!from && !to)
return nullptr;
RefPtr<ScaleTransformOperation> identity;
if (!from) {
identity = ScaleTransformOperation::create(1, 1, 1, to->type());
from = identity.get();
} else if (!to) {
identity = ScaleTransformOperation::create(1, 1, 1, from->type());
to = identity.get();
}
// Ensure the two transforms have the same type.
if (!from->isSameType(*to)) {
RefPtr<ScaleTransformOperation> normalizedFrom;
RefPtr<ScaleTransformOperation> normalizedTo;
if (from->is3DOperation() || to->is3DOperation()) {
normalizedFrom = ScaleTransformOperation::create(from->x(), from->y(), from->z(), TransformOperation::SCALE_3D);
normalizedTo = ScaleTransformOperation::create(to->x(), to->y(), to->z(), TransformOperation::SCALE_3D);
} else {
normalizedFrom = ScaleTransformOperation::create(from->x(), from->y(), TransformOperation::SCALE);
normalizedTo = ScaleTransformOperation::create(to->x(), to->y(), TransformOperation::SCALE);
}
return blendFunc(normalizedFrom.get(), normalizedTo.get(), context);
}
auto blendedOperation = to->blend(from, context);
if (is<ScaleTransformOperation>(blendedOperation)) {
auto& scale = downcast<ScaleTransformOperation>(blendedOperation.get());
return ScaleTransformOperation::create(scale.x(), scale.y(), scale.z(), scale.type());
}
return nullptr;
}
static RefPtr<RotateTransformOperation> blendFunc(RotateTransformOperation* from, RotateTransformOperation* to, const CSSPropertyBlendingContext& context)
{
if (!from && !to)
return nullptr;
RefPtr<RotateTransformOperation> identity;
if (!from) {
identity = RotateTransformOperation::create(0, to->type());
from = identity.get();
} else if (!to) {
identity = RotateTransformOperation::create(0, from->type());
to = identity.get();
}
// Ensure the two transforms have the same type.
if (!from->isSameType(*to)) {
RefPtr<RotateTransformOperation> normalizedFrom;
RefPtr<RotateTransformOperation> normalizedTo;
if (from->is3DOperation() || to->is3DOperation()) {
normalizedFrom = RotateTransformOperation::create(from->x(), from->y(), from->z(), from->angle(), TransformOperation::ROTATE_3D);
normalizedTo = RotateTransformOperation::create(to->x(), to->y(), to->z(), to->angle(), TransformOperation::ROTATE_3D);
} else {
normalizedFrom = RotateTransformOperation::create(from->angle(), TransformOperation::ROTATE);
normalizedTo = RotateTransformOperation::create(to->angle(), TransformOperation::ROTATE);
}
return blendFunc(normalizedFrom.get(), normalizedTo.get(), context);
}
auto blendedOperation = to->blend(from, context);
if (is<RotateTransformOperation>(blendedOperation)) {
auto& rotate = downcast<RotateTransformOperation>(blendedOperation.get());
return RotateTransformOperation::create(rotate.x(), rotate.y(), rotate.z(), rotate.angle(), rotate.type());
}
return nullptr;
}
static RefPtr<TranslateTransformOperation> blendFunc(TranslateTransformOperation* from, TranslateTransformOperation* to, const CSSPropertyBlendingContext& context)
{
if (!from && !to)
return nullptr;
RefPtr<TranslateTransformOperation> identity;
if (!from) {
identity = TranslateTransformOperation::create(Length(0, LengthType::Fixed), Length(0, LengthType::Fixed), Length(0, LengthType::Fixed), to->type());
from = identity.get();
} else if (!to) {
identity = TranslateTransformOperation::create(Length(0, LengthType::Fixed), Length(0, LengthType::Fixed), Length(0, LengthType::Fixed), from->type());
to = identity.get();
}
// Ensure the two transforms have the same type.
if (!from->isSameType(*to)) {
RefPtr<TranslateTransformOperation> normalizedFrom;
RefPtr<TranslateTransformOperation> normalizedTo;
if (from->is3DOperation() || to->is3DOperation()) {
normalizedFrom = TranslateTransformOperation::create(from->x(), from->y(), from->z(), TransformOperation::TRANSLATE_3D);
normalizedTo = TranslateTransformOperation::create(to->x(), to->y(), to->z(), TransformOperation::TRANSLATE_3D);
} else {
normalizedFrom = TranslateTransformOperation::create(from->x(), from->y(), TransformOperation::TRANSLATE);
normalizedTo = TranslateTransformOperation::create(to->x(), to->y(), TransformOperation::TRANSLATE);
}
return blendFunc(normalizedFrom.get(), normalizedTo.get(), context);
}
Ref<TransformOperation> blendedOperation = to->blend(from, context);
if (is<TranslateTransformOperation>(blendedOperation)) {
TranslateTransformOperation& translate = downcast<TranslateTransformOperation>(blendedOperation.get());
return TranslateTransformOperation::create(translate.x(), translate.y(), translate.z(), translate.type());
}
return nullptr;
}
static inline RefPtr<PathOperation> blendFunc(PathOperation* from, PathOperation* to, const CSSPropertyBlendingContext& context)
{
if (is<ShapePathOperation>(from) && is<ShapePathOperation>(to)) {
auto& fromShape = downcast<ShapePathOperation>(*from).basicShape();
auto& toShape = downcast<ShapePathOperation>(*to).basicShape();
if (fromShape.canBlend(toShape))
return ShapePathOperation::create(toShape.blend(fromShape, context));
}
if (is<RayPathOperation>(from) && is<RayPathOperation>(to)) {
auto& fromRay = downcast<RayPathOperation>(*from);
auto& toRay = downcast<RayPathOperation>(*to);
if (fromRay.canBlend(toRay))
return fromRay.blend(toRay, context);
}
// fall back to discrete animation.
return context.progress < 0.5 ? from : to;
}
static inline RefPtr<ShapeValue> blendFunc(ShapeValue* from, ShapeValue* to, const CSSPropertyBlendingContext& context)
{
if (context.isDiscrete) {
ASSERT(!context.progress || context.progress == 1);
return context.progress ? to : from;
}
ASSERT(from && to);
const BasicShape& fromShape = *from->shape();
const BasicShape& toShape = *to->shape();
return ShapeValue::create(toShape.blend(fromShape, context), to->cssBox());
}
static inline RefPtr<FilterOperation> blendFunc(FilterOperation* from, FilterOperation* to, const CSSPropertyBlendingContext& context, bool blendToPassthrough = false)
{
ASSERT(to);
return to->blend(from, context, blendToPassthrough);
}
static inline FilterOperations blendFilterOperations(const FilterOperations& from, const FilterOperations& to, const CSSPropertyBlendingContext& context)
{
FilterOperations result;
size_t fromSize = from.operations().size();
size_t toSize = to.operations().size();
size_t size = std::max(fromSize, toSize);
for (size_t i = 0; i < size; i++) {
RefPtr<FilterOperation> fromOp = (i < fromSize) ? from.operations()[i].get() : nullptr;
RefPtr<FilterOperation> toOp = (i < toSize) ? to.operations()[i].get() : nullptr;
RefPtr<FilterOperation> blendedOp = toOp ? blendFunc(fromOp.get(), toOp.get(), context) : (fromOp ? blendFunc(0, fromOp.get(), context, true) : nullptr);
if (blendedOp)
result.operations().append(blendedOp);
else {
auto identityOp = PassthroughFilterOperation::create();
if (context.progress > 0.5)
result.operations().append(toOp ? toOp : WTFMove(identityOp));
else
result.operations().append(fromOp ? fromOp : WTFMove(identityOp));
}
}
return result;
}
static inline FilterOperations blendFunc(const FilterOperations& from, const FilterOperations& to, const CSSPropertyBlendingContext& context, CSSPropertyID propertyID = CSSPropertyFilter)
{
FilterOperations result;
// If we have a filter function list, use that to do a per-function animation.
bool listsMatch = false;
switch (propertyID) {
case CSSPropertyFilter:
listsMatch = context.client->filterFunctionListsMatch();
break;
#if ENABLE(FILTERS_LEVEL_2)
case CSSPropertyWebkitBackdropFilter:
listsMatch = context.client->backdropFilterFunctionListsMatch();
break;
#endif
case CSSPropertyAppleColorFilter:
listsMatch = context.client->colorFilterFunctionListsMatch();
break;
default:
break;
}
if (listsMatch)
result = blendFilterOperations(from, to, context);
else {
// If the filter function lists don't match, we could try to cross-fade, but don't yet have a way to represent that in CSS.
// For now we'll just fail to animate.
result = to;
}
return result;
}
static inline RefPtr<StyleImage> blendFilter(CachedImage* image, const FilterOperations& from, const FilterOperations& to, const CSSPropertyBlendingContext& context)
{
ASSERT(image);
FilterOperations filterResult = blendFilterOperations(from, to, context);
auto imageValue = CSSImageValue::create(*image);
auto filterValue = ComputedStyleExtractor::valueForFilter(context.client->currentStyle(), filterResult, DoNotAdjustPixelValues);
auto result = CSSFilterImageValue::create(WTFMove(imageValue), WTFMove(filterValue));
result.get().setFilterOperations(filterResult);
return StyleGeneratedImage::create(WTFMove(result));
}
static inline Visibility blendFunc(Visibility from, Visibility to, const CSSPropertyBlendingContext& context)
{
if (from != Visibility::Visible && to != Visibility::Visible)
return context.progress < 0.5 ? from : to;
// Any non-zero result means we consider the object to be visible. Only at 0 do we consider the object to be
// invisible. The invisible value we use (Visibility::Hidden vs. Visibility::Collapse) depends on the specified from/to values.
double fromVal = from == Visibility::Visible ? 1. : 0.;
double toVal = to == Visibility::Visible ? 1. : 0.;
if (fromVal == toVal)
return to;
// The composite operation here is irrelevant.
double result = blendFunc(fromVal, toVal, { context.progress, false, CompositeOperation::Replace, nullptr });
return result > 0. ? Visibility::Visible : (to != Visibility::Visible ? to : from);
}
static inline TextUnderlineOffset blendFunc(const TextUnderlineOffset& from, const TextUnderlineOffset& to, const CSSPropertyBlendingContext& context)
{
if (from.isLength() && to.isLength())
return TextUnderlineOffset::createWithLength(blendFunc(from.lengthValue(), to.lengthValue(), context));
return TextUnderlineOffset::createWithAuto();
}
static inline TextDecorationThickness blendFunc(const TextDecorationThickness& from, const TextDecorationThickness& to, const CSSPropertyBlendingContext& context)
{
if (from.isLength() && to.isLength())
return TextDecorationThickness::createWithLength(blendFunc(from.lengthValue(), to.lengthValue(), context));
return TextDecorationThickness::createWithAuto();
}
static inline LengthBox blendFunc(const LengthBox& from, const LengthBox& to, const CSSPropertyBlendingContext& context, ValueRange valueRange = ValueRange::NonNegative)
{
LengthBox result(blendFunc(from.top(), to.top(), context, valueRange),
blendFunc(from.right(), to.right(), context, valueRange),
blendFunc(from.bottom(), to.bottom(), context, valueRange),
blendFunc(from.left(), to.left(), context, valueRange));
return result;
}
static inline SVGLengthValue blendFunc(const SVGLengthValue& from, const SVGLengthValue& to, const CSSPropertyBlendingContext& context)
{
return SVGLengthValue::blend(from, to, narrowPrecisionToFloat(context.progress));
}
static inline Vector<SVGLengthValue> blendFunc(const Vector<SVGLengthValue>& from, const Vector<SVGLengthValue>& to, const CSSPropertyBlendingContext& context)
{
size_t fromLength = from.size();
size_t toLength = to.size();
if (!fromLength || !toLength)
return context.progress < 0.5 ? from : to;
size_t resultLength = fromLength;
if (fromLength != toLength) {
if (!remainder(std::max(fromLength, toLength), std::min(fromLength, toLength)))
resultLength = std::max(fromLength, toLength);
else
resultLength = fromLength * toLength;
}
Vector<SVGLengthValue> result(resultLength);
for (size_t i = 0; i < resultLength; ++i)
result[i] = SVGLengthValue::blend(from[i % fromLength], to[i % toLength], narrowPrecisionToFloat(context.progress));
return result;
}
static inline RefPtr<StyleImage> crossfadeBlend(StyleCachedImage* fromStyleImage, StyleCachedImage* toStyleImage, const CSSPropertyBlendingContext& context)
{
// If progress is at one of the extremes, we want getComputedStyle to show the image,
// not a completed cross-fade, so we hand back one of the existing images.
if (!context.progress)
return fromStyleImage;
if (context.progress == 1)
return toStyleImage;
if (!fromStyleImage->cachedImage() || !toStyleImage->cachedImage())
return toStyleImage;
auto fromImageValue = CSSImageValue::create(*fromStyleImage->cachedImage());
auto toImageValue = CSSImageValue::create(*toStyleImage->cachedImage());
auto percentageValue = CSSPrimitiveValue::create(context.progress, CSSUnitType::CSS_NUMBER);
auto crossfadeValue = CSSCrossfadeValue::create(WTFMove(fromImageValue), WTFMove(toImageValue), WTFMove(percentageValue));
return StyleGeneratedImage::create(WTFMove(crossfadeValue));
}
static inline RefPtr<StyleImage> blendFunc(StyleImage* from, StyleImage* to, const CSSPropertyBlendingContext& context)
{
if (!context.progress)
return from;
if (context.progress == 1.0)
return to;
ASSERT(from && to);
from = from->selectedImage();
to = to->selectedImage();
if (!from || !to)
return to;
// Animation between two generated images. Cross fade for all other cases.
if (is<StyleGeneratedImage>(*from) && is<StyleGeneratedImage>(*to)) {
CSSImageGeneratorValue& fromGenerated = downcast<StyleGeneratedImage>(*from).imageValue();
CSSImageGeneratorValue& toGenerated = downcast<StyleGeneratedImage>(*to).imageValue();
if (is<CSSFilterImageValue>(fromGenerated) && is<CSSFilterImageValue>(toGenerated)) {
// Animation of generated images just possible if input images are equal.
// Otherwise fall back to cross fade animation.
CSSFilterImageValue& fromFilter = downcast<CSSFilterImageValue>(fromGenerated);
CSSFilterImageValue& toFilter = downcast<CSSFilterImageValue>(toGenerated);
if (fromFilter.equalInputImages(toFilter) && fromFilter.cachedImage())
return blendFilter(fromFilter.cachedImage(), fromFilter.filterOperations(), toFilter.filterOperations(), context);
}
if (is<CSSCrossfadeValue>(fromGenerated) && is<CSSCrossfadeValue>(toGenerated)) {
CSSCrossfadeValue& fromCrossfade = downcast<CSSCrossfadeValue>(fromGenerated);
CSSCrossfadeValue& toCrossfade = downcast<CSSCrossfadeValue>(toGenerated);
if (fromCrossfade.equalInputImages(toCrossfade)) {
if (auto crossfadeBlend = toCrossfade.blend(fromCrossfade, context))
return StyleGeneratedImage::create(*crossfadeBlend);
}
}
// FIXME: Add support for animation between two *gradient() functions.
// https://bugs.webkit.org/show_bug.cgi?id=119956
} else if (is<StyleGeneratedImage>(*from) && is<StyleCachedImage>(*to)) {
CSSImageGeneratorValue& fromGenerated = downcast<StyleGeneratedImage>(*from).imageValue();
if (is<CSSFilterImageValue>(fromGenerated)) {
CSSFilterImageValue& fromFilter = downcast<CSSFilterImageValue>(fromGenerated);
if (fromFilter.cachedImage() && downcast<StyleCachedImage>(*to).cachedImage() == fromFilter.cachedImage())
return blendFilter(fromFilter.cachedImage(), fromFilter.filterOperations(), FilterOperations(), context);
}
// FIXME: Add interpolation between cross-fade and image source.
} else if (is<StyleCachedImage>(*from) && is<StyleGeneratedImage>(*to)) {
CSSImageGeneratorValue& toGenerated = downcast<StyleGeneratedImage>(*to).imageValue();
if (is<CSSFilterImageValue>(toGenerated)) {
CSSFilterImageValue& toFilter = downcast<CSSFilterImageValue>(toGenerated);
if (toFilter.cachedImage() && downcast<StyleCachedImage>(*from).cachedImage() == toFilter.cachedImage())
return blendFilter(toFilter.cachedImage(), FilterOperations(), toFilter.filterOperations(), context);
}
// FIXME: Add interpolation between image source and cross-fade.
}
// FIXME: Add support cross fade between cached and generated images.
// https://bugs.webkit.org/show_bug.cgi?id=78293
if (is<StyleCachedImage>(*from) && is<StyleCachedImage>(*to))
return crossfadeBlend(downcast<StyleCachedImage>(from), downcast<StyleCachedImage>(to), context);
return to;
}
static inline NinePieceImage blendFunc(const NinePieceImage& from, const NinePieceImage& to, const CSSPropertyBlendingContext& context)
{
if (!from.hasImage() || !to.hasImage())
return to;
// FIXME (74112): Support transitioning between NinePieceImages that differ by more than image content.
if (from.imageSlices() != to.imageSlices() || from.borderSlices() != to.borderSlices() || from.outset() != to.outset() || from.fill() != to.fill() || from.horizontalRule() != to.horizontalRule() || from.verticalRule() != to.verticalRule())
return to;
if (auto* renderer = context.client->renderer()) {
if (from.image()->imageSize(renderer, 1.0) != to.image()->imageSize(renderer, 1.0))
return to;
}
return NinePieceImage(blendFunc(from.image(), to.image(), context),
from.imageSlices(), from.fill(), from.borderSlices(), from.outset(), from.horizontalRule(), from.verticalRule());
}
#if ENABLE(VARIATION_FONTS)
static inline FontVariationSettings blendFunc(const FontVariationSettings& from, const FontVariationSettings& to, const CSSPropertyBlendingContext& context)
{
if (!context.progress)
return from;
if (context.progress == 1.0)
return to;
ASSERT(from.size() == to.size());
FontVariationSettings result;
unsigned size = from.size();
for (unsigned i = 0; i < size; ++i) {
auto& fromItem = from.at(i);
auto& toItem = to.at(i);
ASSERT(fromItem.tag() == toItem.tag());
float interpolated = blendFunc(fromItem.value(), toItem.value(), context);
result.insert({ fromItem.tag(), interpolated });
}
return result;
}
#endif
static inline FontSelectionValue blendFunc(FontSelectionValue from, FontSelectionValue to, const CSSPropertyBlendingContext& context)
{
return FontSelectionValue(std::max(0.0f, blendFunc(static_cast<float>(from), static_cast<float>(to), context)));
}
static inline std::optional<FontSelectionValue> blendFunc(std::optional<FontSelectionValue> from, std::optional<FontSelectionValue> to, const CSSPropertyBlendingContext& context)
{
return blendFunc(*from, *to, context);
}
static inline OffsetRotation blendFunc(const OffsetRotation& from, const OffsetRotation& to, const CSSPropertyBlendingContext& context)
{
if (!context.progress)
return from;
if (context.progress == 1)
return to;
ASSERT(from.hasAuto() == to.hasAuto());
return OffsetRotation(from.hasAuto(), clampTo<float>(blend(from.angle(), to.angle(), context)));
}
class AnimationPropertyWrapperBase {
WTF_MAKE_NONCOPYABLE(AnimationPropertyWrapperBase);
WTF_MAKE_FAST_ALLOCATED;
public:
explicit AnimationPropertyWrapperBase(CSSPropertyID property)
: m_property(property)
{
}
virtual ~AnimationPropertyWrapperBase() = default;
virtual bool isShorthandWrapper() const { return false; }
virtual bool isAdditiveOrCumulative() const { return true; }
virtual bool equals(const RenderStyle&, const RenderStyle&) const = 0;
virtual bool canInterpolate(const RenderStyle&, const RenderStyle&, CompositeOperation) const { return true; }
virtual void blend(RenderStyle&, const RenderStyle&, const RenderStyle&, const CSSPropertyBlendingContext&) const = 0;
#if !LOG_DISABLED
virtual void logBlend(const RenderStyle&, const RenderStyle&, const RenderStyle&, double) const = 0;
#endif
CSSPropertyID property() const { return m_property; }
virtual bool animationIsAccelerated() const { return false; }
private:
CSSPropertyID m_property;
};
template <typename T>
class PropertyWrapperGetter : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperGetter(CSSPropertyID property, T (RenderStyle::*getter)() const)
: AnimationPropertyWrapperBase(property)
, m_getter(getter)
{
}
T value(const RenderStyle& style) const
{
return (style.*m_getter)();
}
bool equals(const RenderStyle& a, const RenderStyle& b) const override
{
if (&a == &b)
return true;
return value(a) == value(b);
}
#if !LOG_DISABLED
void logBlend(const RenderStyle& from, const RenderStyle& to, const RenderStyle& destination, double progress) const final
{
LOG_WITH_STREAM(Animations, stream << " blending " << getPropertyName(property()) << " from " << value(from) << " to " << value(to) << " at " << TextStream::FormatNumberRespectingIntegers(progress) << " -> " << value(destination));
}
#endif
private:
T (RenderStyle::*m_getter)() const;
};
template <typename T>
class PropertyWrapper : public PropertyWrapperGetter<T> {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapper(CSSPropertyID property, T (RenderStyle::*getter)() const, void (RenderStyle::*setter)(T))
: PropertyWrapperGetter<T>(property, getter)
, m_setter(setter)
{
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const override
{
(destination.*m_setter)(blendFunc(this->value(from), this->value(to), context));
}
protected:
void (RenderStyle::*m_setter)(T);
};
class OffsetRotatePropertyWrapper final : public PropertyWrapperGetter<OffsetRotation> {
WTF_MAKE_FAST_ALLOCATED;
public:
OffsetRotatePropertyWrapper(CSSPropertyID property, OffsetRotation (RenderStyle::*getter)() const, void (RenderStyle::*setter)(OffsetRotation&&))
: PropertyWrapperGetter(property, getter)
, m_setter(setter)
{
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return value(from).hasAuto() == value(to).hasAuto();
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
(destination.*m_setter)(blendFunc(value(from), value(to), context));
}
private:
void (RenderStyle::*m_setter)(OffsetRotation&&);
};
template <typename T>
class PositivePropertyWrapper final : public PropertyWrapper<T> {
WTF_MAKE_FAST_ALLOCATED;
public:
PositivePropertyWrapper(CSSPropertyID property, T (RenderStyle::*getter)() const, void (RenderStyle::*setter)(T))
: PropertyWrapper<T>(property, getter, setter)
{
}
private:
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
auto blendedValue = blendFunc(this->value(from), this->value(to), context);
(destination.*this->m_setter)(blendedValue > 1 ? blendedValue : 1);
}
};
template <typename T>
class DiscretePropertyWrapper final : public PropertyWrapperGetter<T> {
WTF_MAKE_FAST_ALLOCATED;
public:
DiscretePropertyWrapper(CSSPropertyID property, T (RenderStyle::*getter)() const, void (RenderStyle::*setter)(T))
: PropertyWrapperGetter<T>(property, getter)
, m_setter(setter)
{
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
ASSERT(!context.progress || context.progress == 1.0);
(destination.*this->m_setter)(this->value(context.progress ? to : from));
}
private:
bool canInterpolate(const RenderStyle&, const RenderStyle&, CompositeOperation) const final { return false; }
void (RenderStyle::*m_setter)(T);
};
template <GridTrackSizingDirection>
class GridTemplateTracksWrapper : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
GridTemplateTracksWrapper();
private:
bool canInterpolate(const RenderStyle&, const RenderStyle&, CompositeOperation) const final { return false; }
bool equals(const RenderStyle& a, const RenderStyle& b) const override
{
return m_gridTracksWrapper.equals(a, b) && m_autoRepeatTracksWrapper.equals(a, b) && m_gridAutoRepeatTypeTracksWrapper.equals(a, b) && m_gridAutoRepeatInsertionPointTracksWrapper.equals(a, b) && m_orderedNamedGridLinesTracksWrapper.equals(a, b) && m_autoRepeatOrderedNamedGridLinesTracksWrapper.equals(a, b);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
m_gridTracksWrapper.blend(destination, from, to, context);
m_autoRepeatTracksWrapper.blend(destination, from, to, context);
m_gridAutoRepeatTypeTracksWrapper.blend(destination, from, to, context);
m_gridAutoRepeatInsertionPointTracksWrapper.blend(destination, from, to, context);
m_orderedNamedGridLinesTracksWrapper.blend(destination, from, to, context);
m_autoRepeatOrderedNamedGridLinesTracksWrapper.blend(destination, from, to, context);
}
#if !LOG_DISABLED
void logBlend(const RenderStyle& from, const RenderStyle& to, const RenderStyle& destination, double progress) const final
{
m_gridTracksWrapper.logBlend(from, to, destination, progress);
m_autoRepeatTracksWrapper.logBlend(from, to, destination, progress);
m_gridAutoRepeatTypeTracksWrapper.logBlend(from, to, destination, progress);
m_gridAutoRepeatInsertionPointTracksWrapper.logBlend(from, to, destination, progress);
m_orderedNamedGridLinesTracksWrapper.logBlend(from, to, destination, progress);
m_autoRepeatOrderedNamedGridLinesTracksWrapper.logBlend(from, to, destination, progress);
}
#endif
DiscretePropertyWrapper<const Vector<GridTrackSize>&> m_gridTracksWrapper;
DiscretePropertyWrapper<const Vector<GridTrackSize>&> m_autoRepeatTracksWrapper;
DiscretePropertyWrapper<AutoRepeatType> m_gridAutoRepeatTypeTracksWrapper;
DiscretePropertyWrapper<unsigned> m_gridAutoRepeatInsertionPointTracksWrapper;
DiscretePropertyWrapper<const OrderedNamedGridLinesMap&> m_orderedNamedGridLinesTracksWrapper;
DiscretePropertyWrapper<const OrderedNamedGridLinesMap&> m_autoRepeatOrderedNamedGridLinesTracksWrapper;
};
template <>
GridTemplateTracksWrapper<ForColumns>::GridTemplateTracksWrapper()
: AnimationPropertyWrapperBase(CSSPropertyGridTemplateColumns)
, m_gridTracksWrapper(DiscretePropertyWrapper<const Vector<GridTrackSize>&>(CSSPropertyGridTemplateColumns, &RenderStyle::gridColumns, &RenderStyle::setGridColumns))
, m_autoRepeatTracksWrapper(DiscretePropertyWrapper<const Vector<GridTrackSize>&>(CSSPropertyGridTemplateColumns, &RenderStyle::gridAutoRepeatColumns, &RenderStyle::setGridAutoRepeatColumns))
, m_gridAutoRepeatTypeTracksWrapper(DiscretePropertyWrapper<AutoRepeatType>(CSSPropertyGridTemplateColumns, &RenderStyle::gridAutoRepeatColumnsType, &RenderStyle::setGridAutoRepeatColumnsType))
, m_gridAutoRepeatInsertionPointTracksWrapper(DiscretePropertyWrapper<unsigned>(CSSPropertyGridTemplateColumns, &RenderStyle::gridAutoRepeatColumnsInsertionPoint, &RenderStyle::setGridAutoRepeatColumnsInsertionPoint))
, m_orderedNamedGridLinesTracksWrapper(DiscretePropertyWrapper<const OrderedNamedGridLinesMap&>(CSSPropertyGridTemplateColumns, &RenderStyle::orderedNamedGridColumnLines, &RenderStyle::setOrderedNamedGridColumnLines))
, m_autoRepeatOrderedNamedGridLinesTracksWrapper(DiscretePropertyWrapper<const OrderedNamedGridLinesMap&>(CSSPropertyGridTemplateColumns, &RenderStyle::autoRepeatOrderedNamedGridColumnLines, &RenderStyle::setAutoRepeatOrderedNamedGridColumnLines))
{
}
template <>
GridTemplateTracksWrapper<ForRows>::GridTemplateTracksWrapper()
: AnimationPropertyWrapperBase(CSSPropertyGridTemplateRows)
, m_gridTracksWrapper(DiscretePropertyWrapper<const Vector<GridTrackSize>&>(CSSPropertyGridTemplateRows, &RenderStyle::gridRows, &RenderStyle::setGridRows))
, m_autoRepeatTracksWrapper(DiscretePropertyWrapper<const Vector<GridTrackSize>&>(CSSPropertyGridTemplateRows, &RenderStyle::gridAutoRepeatRows, &RenderStyle::setGridAutoRepeatRows))
, m_gridAutoRepeatTypeTracksWrapper(DiscretePropertyWrapper<AutoRepeatType>(CSSPropertyGridTemplateRows, &RenderStyle::gridAutoRepeatRowsType, &RenderStyle::setGridAutoRepeatRowsType))
, m_gridAutoRepeatInsertionPointTracksWrapper(DiscretePropertyWrapper<unsigned>(CSSPropertyGridTemplateRows, &RenderStyle::gridAutoRepeatRowsInsertionPoint, &RenderStyle::setGridAutoRepeatRowsInsertionPoint))
, m_orderedNamedGridLinesTracksWrapper(DiscretePropertyWrapper<const OrderedNamedGridLinesMap&>(CSSPropertyGridTemplateRows, &RenderStyle::orderedNamedGridRowLines, &RenderStyle::setOrderedNamedGridRowLines))
, m_autoRepeatOrderedNamedGridLinesTracksWrapper(DiscretePropertyWrapper<const OrderedNamedGridLinesMap&>(CSSPropertyGridTemplateRows, &RenderStyle::autoRepeatOrderedNamedGridRowLines, &RenderStyle::setAutoRepeatOrderedNamedGridRowLines))
{
}
class BorderImageRepeatWrapper final : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
BorderImageRepeatWrapper()
: AnimationPropertyWrapperBase(CSSPropertyBorderImageRepeat)
, m_horizontalWrapper(DiscretePropertyWrapper<NinePieceImageRule>(CSSPropertyBorderImageRepeat, &RenderStyle::borderImageHorizontalRule, &RenderStyle::setBorderImageHorizontalRule))
, m_verticalWrapper(DiscretePropertyWrapper<NinePieceImageRule>(CSSPropertyBorderImageRepeat, &RenderStyle::borderImageVerticalRule, &RenderStyle::setBorderImageVerticalRule))
{
}
private:
bool canInterpolate(const RenderStyle&, const RenderStyle&, CompositeOperation) const final { return false; }
bool equals(const RenderStyle& a, const RenderStyle& b) const override
{
return m_horizontalWrapper.equals(a, b) && m_verticalWrapper.equals(a, b);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
m_horizontalWrapper.blend(destination, from, to, context);
m_verticalWrapper.blend(destination, from, to, context);
}
#if !LOG_DISABLED
void logBlend(const RenderStyle& from, const RenderStyle& to, const RenderStyle& destination, double progress) const final
{
m_horizontalWrapper.logBlend(from, to, destination, progress);
m_verticalWrapper.logBlend(from, to, destination, progress);
}
#endif
DiscretePropertyWrapper<NinePieceImageRule> m_horizontalWrapper;
DiscretePropertyWrapper<NinePieceImageRule> m_verticalWrapper;
};
template <typename T>
class RefCountedPropertyWrapper : public PropertyWrapperGetter<T*> {
WTF_MAKE_FAST_ALLOCATED;
public:
RefCountedPropertyWrapper(CSSPropertyID property, T* (RenderStyle::*getter)() const, void (RenderStyle::*setter)(RefPtr<T>&&))
: PropertyWrapperGetter<T*>(property, getter)
, m_setter(setter)
{
}
private:
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
(destination.*this->m_setter)(blendFunc(this->value(from), this->value(to), context));
}
void (RenderStyle::*m_setter)(RefPtr<T>&&);
};
static bool canInterpolateLengths(const Length& from, const Length& to, bool isLengthPercentage)
{
if (from.type() == to.type())
return true;
// Some properties allow for <length-percentage> and <number> values. We must allow animating
// between a <length> and a <percentage>, but exclude animating between a <number> and either
// a <length> or <percentage>. We can use Length::isRelative() to determine whether we are
// dealing with a <number> as opposed to a <length> or <percentage>.
if (isLengthPercentage) {
return (from.isFixed() || from.isPercentOrCalculated() || from.isRelative())
&& (to.isFixed() || to.isPercentOrCalculated() || to.isRelative())
&& from.isRelative() == to.isRelative();
}
if (from.isCalculated())
return to.isFixed() || to.isPercentOrCalculated();
if (to.isCalculated())
return from.isFixed() || from.isPercentOrCalculated();
return false;
}
class LengthPropertyWrapper : public PropertyWrapperGetter<const Length&> {
WTF_MAKE_FAST_ALLOCATED;
public:
enum class Flags {
IsLengthPercentage = 1 << 0,
NegativeLengthsAreInvalid = 1 << 1,
};
LengthPropertyWrapper(CSSPropertyID property, const Length& (RenderStyle::*getter)() const, void (RenderStyle::*setter)(Length&&), OptionSet<Flags> flags = { })
: PropertyWrapperGetter<const Length&>(property, getter)
, m_setter(setter)
, m_flags(flags)
{
}
protected:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const override
{
return canInterpolateLengths(value(from), value(to), m_flags.contains(Flags::IsLengthPercentage));
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const override
{
auto valueRange = m_flags.contains(Flags::NegativeLengthsAreInvalid) ? ValueRange::NonNegative : ValueRange::All;
(destination.*m_setter)(blendFunc(value(from), value(to), context, valueRange));
}
private:
void (RenderStyle::*m_setter)(Length&&);
OptionSet<Flags> m_flags;
};
static bool canInterpolateLengthVariants(const LengthSize& from, const LengthSize& to)
{
bool isLengthPercentage = true;
return canInterpolateLengths(from.width, to.width, isLengthPercentage)
&& canInterpolateLengths(from.height, to.height, isLengthPercentage);
}
static bool canInterpolateLengthVariants(const GapLength& from, const GapLength& to)
{
if (from.isNormal() || to.isNormal())
return false;
bool isLengthPercentage = true;
return canInterpolateLengths(from.length(), to.length(), isLengthPercentage);
}
class LengthPointPropertyWrapper : public PropertyWrapperGetter<LengthPoint> {
WTF_MAKE_FAST_ALLOCATED;
public:
LengthPointPropertyWrapper(CSSPropertyID property, LengthPoint (RenderStyle::*getter)() const, void (RenderStyle::*setter)(LengthPoint&&))
: PropertyWrapperGetter<LengthPoint>(property, getter)
, m_setter(setter)
{
}
private:
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
(destination.*m_setter)(blendFunc(value(from), value(to), context));
}
void (RenderStyle::*m_setter)(LengthPoint&&);
};
// This class extends LengthPointPropertyWrapper to accommodate `auto` value expressed as
// LengthPoint(Length(LengthType::Auto), Length(LengthType::Auto)). This is used for
// offset-anchor and offset-position, which allows `auto`, and is expressed like so.
class LengthPointOrAutoPropertyWrapper final : public LengthPointPropertyWrapper {
public:
LengthPointOrAutoPropertyWrapper(CSSPropertyID property, LengthPoint (RenderStyle::*getter)() const, void (RenderStyle::*setter)(LengthPoint&&))
: LengthPointPropertyWrapper(property, getter, setter)
{
}
private:
// Check if it's possible to interpolate between the from and to values. In particular,
// it's only possible if they're both not auto.
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
bool fromIsAuto = value(from).x().isAuto() && value(from).y().isAuto();
bool toIsAuto = value(to).x().isAuto() && value(to).y().isAuto();
return (!fromIsAuto && !toIsAuto);
}
};
template <typename T>
class LengthVariantPropertyWrapper final : public PropertyWrapperGetter<const T&> {
WTF_MAKE_FAST_ALLOCATED;
public:
LengthVariantPropertyWrapper(CSSPropertyID property, const T& (RenderStyle::*getter)() const, void (RenderStyle::*setter)(T&&))
: PropertyWrapperGetter<const T&>(property, getter)
, m_setter(setter)
{
}
private:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return canInterpolateLengthVariants(this->value(from), this->value(to));
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
(destination.*m_setter)(blendFunc(this->value(from), this->value(to), context));
}
void (RenderStyle::*m_setter)(T&&);
};
class LengthBoxPropertyWrapper : public PropertyWrapperGetter<const LengthBox&> {
WTF_MAKE_FAST_ALLOCATED;
public:
enum class Flags {
IsLengthPercentage = 1 << 0,
UsesFillKeyword = 1 << 1,
AllowsNegativeValues = 1 << 2,
};
LengthBoxPropertyWrapper(CSSPropertyID property, const LengthBox& (RenderStyle::*getter)() const, void (RenderStyle::*setter)(LengthBox&&), OptionSet<Flags> flags = { })
: PropertyWrapperGetter<const LengthBox&>(property, getter)
, m_setter(setter)
, m_flags(flags)
{
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const override
{
if (m_flags.contains(Flags::UsesFillKeyword) && from.borderImage().fill() != to.borderImage().fill())
return false;
auto& fromLengthBox = value(from);
auto& toLengthBox = value(to);
bool isLengthPercentage = m_flags.contains(Flags::IsLengthPercentage);
return canInterpolateLengths(fromLengthBox.top(), toLengthBox.top(), isLengthPercentage)
&& canInterpolateLengths(fromLengthBox.right(), toLengthBox.right(), isLengthPercentage)
&& canInterpolateLengths(fromLengthBox.bottom(), toLengthBox.bottom(), isLengthPercentage)
&& canInterpolateLengths(fromLengthBox.left(), toLengthBox.left(), isLengthPercentage);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const override
{
if (m_flags.contains(Flags::UsesFillKeyword))
destination.setBorderImageSliceFill((!context.progress || !context.isDiscrete ? from : to).borderImage().fill());
if (context.isDiscrete) {
// It is important we have this non-interpolated shortcut because certain CSS properties
// represented as a LengthBox, such as border-image-slice, don't know how to deal with
// calculated Length values, see for instance valueForImageSliceSide(const Length&).
(destination.*m_setter)(context.progress ? LengthBox(value(to)) : LengthBox(value(from)));
return;
}
auto valueRange = m_flags.contains(Flags::AllowsNegativeValues) ? ValueRange::All : ValueRange::NonNegative;
(destination.*m_setter)(blendFunc(value(from), value(to), context, valueRange));
}
void (RenderStyle::*m_setter)(LengthBox&&);
OptionSet<Flags> m_flags;
};
class ClipWrapper final : public LengthBoxPropertyWrapper {
WTF_MAKE_FAST_ALLOCATED;
public:
ClipWrapper()
: LengthBoxPropertyWrapper(CSSPropertyClip, &RenderStyle::clip, &RenderStyle::setClip, { LengthBoxPropertyWrapper::Flags::AllowsNegativeValues })
{
}
private:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation compositeOperation) const final
{
return from.hasClip() && to.hasClip() && LengthBoxPropertyWrapper::canInterpolate(from, to, compositeOperation);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
LengthBoxPropertyWrapper::blend(destination, from, to, context);
destination.setHasClip(true);
}
};
class PathOperationPropertyWrapper final : public RefCountedPropertyWrapper<PathOperation> {
WTF_MAKE_FAST_ALLOCATED;
public:
PathOperationPropertyWrapper(CSSPropertyID property, PathOperation* (RenderStyle::*getter)() const, void (RenderStyle::*setter)(RefPtr<PathOperation>&&))
: RefCountedPropertyWrapper<PathOperation>(property, getter, setter)
{
}
private:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const override
{
auto fromPath = value(from);
auto toPath = value(to);
if (is<ShapePathOperation>(fromPath) && is<ShapePathOperation>(toPath)) {
auto& fromShape = downcast<ShapePathOperation>(*fromPath).basicShape();
auto& toShape = downcast<ShapePathOperation>(*toPath).basicShape();
return fromShape.canBlend(toShape);
}
if (is<RayPathOperation>(fromPath) && is<RayPathOperation>(toPath)) {
auto& fromRay = downcast<RayPathOperation>(*fromPath);
auto& toRay = downcast<RayPathOperation>(*toPath);
return fromRay.canBlend(toRay);
}
return false;
}
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
// If the style pointers are the same, don't bother doing the test.
if (&a == &b)
return true;
auto* clipPathA = value(a);
auto* clipPathB = value(b);
if (clipPathA == clipPathB)
return true;
if (!clipPathA || !clipPathB)
return false;
return *clipPathA == *clipPathB;
}
};
#if ENABLE(VARIATION_FONTS)
class PropertyWrapperFontVariationSettings final : public PropertyWrapper<FontVariationSettings> {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperFontVariationSettings(CSSPropertyID property, FontVariationSettings (RenderStyle::*getter)() const, void (RenderStyle::*setter)(FontVariationSettings))
: PropertyWrapper<FontVariationSettings>(property, getter, setter)
{
}
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
// If the style pointers are the same, don't bother doing the test.
if (&a == &b)
return true;
return value(a) == value(b);
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
auto fromVariationSettings = value(from);
auto toVariationSettings = value(to);
if (fromVariationSettings.size() != toVariationSettings.size())
return false;
auto size = fromVariationSettings.size();
for (unsigned i = 0; i < size; ++i) {
if (fromVariationSettings.at(i).tag() != toVariationSettings.at(i).tag())
return false;
}
return true;
}
};
#endif
class PropertyWrapperShape final : public RefCountedPropertyWrapper<ShapeValue> {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperShape(CSSPropertyID property, ShapeValue* (RenderStyle::*getter)() const, void (RenderStyle::*setter)(RefPtr<ShapeValue>&&))
: RefCountedPropertyWrapper<ShapeValue>(property, getter, setter)
{
}
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
// If the style pointers are the same, don't bother doing the test.
if (&a == &b)
return true;
auto* shapeA = value(a);
auto* shapeB = value(b);
if (shapeA == shapeB)
return true;
if (!shapeA || !shapeB)
return false;
return *shapeA == *shapeB;
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
auto* fromShape = value(from);
auto* toShape = value(to);
if (!fromShape || !toShape)
return false;
if (fromShape->type() != ShapeValue::Type::Shape || toShape->type() != ShapeValue::Type::Shape)
return false;
if (fromShape->cssBox() != toShape->cssBox())
return false;
return fromShape->shape()->canBlend(*toShape->shape());
}
};
class StyleImagePropertyWrapper final : public RefCountedPropertyWrapper<StyleImage> {
WTF_MAKE_FAST_ALLOCATED;
public:
StyleImagePropertyWrapper(CSSPropertyID property, StyleImage* (RenderStyle::*getter)() const, void (RenderStyle::*setter)(RefPtr<StyleImage>&&))
: RefCountedPropertyWrapper<StyleImage>(property, getter, setter)
{
}
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
if (&a == &b)
return true;
auto* imageA = value(a);
auto* imageB = value(b);
return arePointingToEqualData(imageA, imageB);
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return value(from) && value(to);
}
};
template <typename T>
class AcceleratedPropertyWrapper final : public PropertyWrapper<T> {
WTF_MAKE_FAST_ALLOCATED;
public:
AcceleratedPropertyWrapper(CSSPropertyID property, T (RenderStyle::*getter)() const, void (RenderStyle::*setter)(T))
: PropertyWrapper<T>(property, getter, setter)
{
}
private:
bool animationIsAccelerated() const final { return true; }
};
template <typename T>
class AcceleratedIndividualTransformPropertyWrapper final : public RefCountedPropertyWrapper<T> {
WTF_MAKE_FAST_ALLOCATED;
public:
AcceleratedIndividualTransformPropertyWrapper(CSSPropertyID property, T* (RenderStyle::*getter)() const, void (RenderStyle::*setter)(RefPtr<T>&&))
: RefCountedPropertyWrapper<T>(property, getter, setter)
{
}
private:
bool animationIsAccelerated() const final { return true; }
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
return arePointingToEqualData(this->value(a), this->value(b));
}
};
class PropertyWrapperFilter final : public PropertyWrapper<const FilterOperations&> {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperFilter(CSSPropertyID propertyID, const FilterOperations& (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const FilterOperations&))
: PropertyWrapper<const FilterOperations&>(propertyID, getter, setter)
{
}
private:
bool animationIsAccelerated() const final
{
return property() == CSSPropertyFilter
#if ENABLE(FILTERS_LEVEL_2)
|| property() == CSSPropertyWebkitBackdropFilter
#endif
;
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
(destination.*m_setter)(blendFunc(value(from), value(to), context, property()));
}
};
static inline size_t shadowListLength(const ShadowData* shadow)
{
size_t count;
for (count = 0; shadow; shadow = shadow->next())
++count;
return count;
}
static inline const ShadowData* shadowForBlending(const ShadowData* srcShadow, const ShadowData* otherShadow)
{
static NeverDestroyed<ShadowData> defaultShadowData(LengthPoint(Length(LengthType::Fixed), Length(LengthType::Fixed)), Length(LengthType::Fixed), Length(LengthType::Fixed), ShadowStyle::Normal, false, Color::transparentBlack);
static NeverDestroyed<ShadowData> defaultInsetShadowData(LengthPoint(Length(LengthType::Fixed), Length(LengthType::Fixed)), Length(LengthType::Fixed), Length(LengthType::Fixed), ShadowStyle::Inset, false, Color::transparentBlack);
static NeverDestroyed<ShadowData> defaultWebKitBoxShadowData(LengthPoint(Length(LengthType::Fixed), Length(LengthType::Fixed)), Length(LengthType::Fixed), Length(LengthType::Fixed), ShadowStyle::Normal, true, Color::transparentBlack);
static NeverDestroyed<ShadowData> defaultInsetWebKitBoxShadowData(LengthPoint(Length(LengthType::Fixed), Length(LengthType::Fixed)), Length(LengthType::Fixed), Length(LengthType::Fixed), ShadowStyle::Inset, true, Color::transparentBlack);
if (srcShadow)
return srcShadow;
if (otherShadow->style() == ShadowStyle::Inset)
return otherShadow->isWebkitBoxShadow() ? &defaultInsetWebKitBoxShadowData.get() : &defaultInsetShadowData.get();
return otherShadow->isWebkitBoxShadow() ? &defaultWebKitBoxShadowData.get() : &defaultShadowData.get();
}
class PropertyWrapperShadow final : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperShadow(CSSPropertyID property, const ShadowData* (RenderStyle::*getter)() const, void (RenderStyle::*setter)(std::unique_ptr<ShadowData>, bool))
: AnimationPropertyWrapperBase(property)
, m_getter(getter)
, m_setter(setter)
{
}
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
if (&a == &b)
return true;
const ShadowData* shadowA = (a.*m_getter)();
const ShadowData* shadowB = (b.*m_getter)();
while (true) {
// end of both lists
if (!shadowA && !shadowB)
return true;
// end of just one of the lists
if (!shadowA || !shadowB)
return false;
if (*shadowA != *shadowB)
return false;
shadowA = shadowA->next();
shadowB = shadowB->next();
}
return true;
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation compositeOperation) const final
{
if (compositeOperation != CompositeOperation::Replace)
return true;
const ShadowData* fromShadow = (from.*m_getter)();
const ShadowData* toShadow = (to.*m_getter)();
// The only scenario where we can't interpolate is if specified items don't have the same shadow style.
while (fromShadow && toShadow) {
if (fromShadow->style() != toShadow->style())
return false;
fromShadow = fromShadow->next();
toShadow = toShadow->next();
}
return true;
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
const ShadowData* fromShadow = (from.*m_getter)();
const ShadowData* toShadow = (to.*m_getter)();
if (context.isDiscrete) {
ASSERT(!context.progress || context.progress == 1.0);
auto* shadow = context.progress ? toShadow : fromShadow;
(destination.*m_setter)(shadow ? makeUnique<ShadowData>(*shadow) : nullptr, false);
return;
}
int fromLength = shadowListLength(fromShadow);
int toLength = shadowListLength(toShadow);
if (fromLength == toLength || (fromLength <= 1 && toLength <= 1)) {
(destination.*m_setter)(blendSimpleOrMatchedShadowLists(fromShadow, toShadow, context), false);
return;
}
(destination.*m_setter)(blendMismatchedShadowLists(fromShadow, toShadow, fromLength, toLength, context), false);
}
#if !LOG_DISABLED
void logBlend(const RenderStyle&, const RenderStyle&, const RenderStyle&, double progress) const final
{
// FIXME: better logging.
LOG_WITH_STREAM(Animations, stream << " blending ShadowData at " << TextStream::FormatNumberRespectingIntegers(progress));
}
#endif
std::unique_ptr<ShadowData> addShadowLists(const ShadowData* shadowA, const ShadowData* shadowB) const
{
std::unique_ptr<ShadowData> newShadowData;
ShadowData* lastShadow = nullptr;
auto addShadows = [&](const ShadowData* shadow) {
while (shadow) {
auto blendedShadow = makeUnique<ShadowData>(*shadow);
auto* blendedShadowPtr = blendedShadow.get();
if (!lastShadow)
newShadowData = WTFMove(blendedShadow);
else
lastShadow->setNext(WTFMove(blendedShadow));
lastShadow = blendedShadowPtr;
shadow = shadow ? shadow->next() : nullptr;
}
};
addShadows(shadowB);
addShadows(shadowA);
return newShadowData;
}
std::unique_ptr<ShadowData> blendSimpleOrMatchedShadowLists(const ShadowData* shadowA, const ShadowData* shadowB, const CSSPropertyBlendingContext& context) const
{
// from or to might be null in which case we don't want to do additivity, but do replace instead.
if (shadowA && shadowB && context.compositeOperation == CompositeOperation::Add)
return addShadowLists(shadowA, shadowB);
std::unique_ptr<ShadowData> newShadowData;
ShadowData* lastShadow = nullptr;
while (shadowA || shadowB) {
const ShadowData* srcShadow = shadowForBlending(shadowA, shadowB);
const ShadowData* dstShadow = shadowForBlending(shadowB, shadowA);
std::unique_ptr<ShadowData> blendedShadow = blendFunc(srcShadow, dstShadow, context);
ShadowData* blendedShadowPtr = blendedShadow.get();
if (!lastShadow)
newShadowData = WTFMove(blendedShadow);
else
lastShadow->setNext(WTFMove(blendedShadow));
lastShadow = blendedShadowPtr;
shadowA = shadowA ? shadowA->next() : 0;
shadowB = shadowB ? shadowB->next() : 0;
}
return newShadowData;
}
std::unique_ptr<ShadowData> blendMismatchedShadowLists(const ShadowData* shadowA, const ShadowData* shadowB, int fromLength, int toLength, const CSSPropertyBlendingContext& context) const
{
if (shadowA && shadowB && context.compositeOperation != CompositeOperation::Replace)
return addShadowLists(shadowA, shadowB);
// The shadows in ShadowData are stored in reverse order, so when animating mismatched lists,
// reverse them and match from the end.
Vector<const ShadowData*, 4> fromShadows(fromLength);
for (int i = fromLength - 1; i >= 0; --i) {
fromShadows[i] = shadowA;
shadowA = shadowA->next();
}
Vector<const ShadowData*, 4> toShadows(toLength);
for (int i = toLength - 1; i >= 0; --i) {
toShadows[i] = shadowB;
shadowB = shadowB->next();
}
std::unique_ptr<ShadowData> newShadowData;
int maxLength = std::max(fromLength, toLength);
for (int i = 0; i < maxLength; ++i) {
const ShadowData* fromShadow = i < fromLength ? fromShadows[i] : 0;
const ShadowData* toShadow = i < toLength ? toShadows[i] : 0;
const ShadowData* srcShadow = shadowForBlending(fromShadow, toShadow);
const ShadowData* dstShadow = shadowForBlending(toShadow, fromShadow);
std::unique_ptr<ShadowData> blendedShadow = blendFunc(srcShadow, dstShadow, context);
// Insert at the start of the list to preserve the order.
blendedShadow->setNext(WTFMove(newShadowData));
newShadowData = WTFMove(blendedShadow);
}
return newShadowData;
}
const ShadowData* (RenderStyle::*m_getter)() const;
void (RenderStyle::*m_setter)(std::unique_ptr<ShadowData>, bool);
};
class PropertyWrapperMaybeInvalidColor : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperMaybeInvalidColor(CSSPropertyID property, const Color& (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const Color&))
: AnimationPropertyWrapperBase(property)
, m_getter(getter)
, m_setter(setter)
{
}
protected:
bool equals(const RenderStyle& a, const RenderStyle& b) const override
{
if (&a == &b)
return true;
Color fromColor = value(a);
Color toColor = value(b);
if (!fromColor.isValid() && !toColor.isValid())
return true;
if (!fromColor.isValid())
fromColor = a.color();
if (!toColor.isValid())
toColor = b.color();
return fromColor == toColor;
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const override
{
Color fromColor = value(from);
Color toColor = value(to);
if (!fromColor.isValid() && !toColor.isValid())
return;
if (!fromColor.isValid())
fromColor = from.color();
if (!toColor.isValid())
toColor = to.color();
(destination.*m_setter)(blendFunc(fromColor, toColor, context));
}
private:
Color value(const RenderStyle& style) const
{
return (style.*m_getter)();
}
#if !LOG_DISABLED
void logBlend(const RenderStyle& from, const RenderStyle& to, const RenderStyle& destination, double progress) const final
{
// FIXME: better logging.
LOG_WITH_STREAM(Animations, stream << " blending " << getPropertyName(property()) << " from " << value(from) << " to " << value(to) << " at " << TextStream::FormatNumberRespectingIntegers(progress) << " -> " << value(destination));
}
#endif
const Color& (RenderStyle::*m_getter)() const;
void (RenderStyle::*m_setter)(const Color&);
};
enum MaybeInvalidColorTag { MaybeInvalidColor };
class PropertyWrapperVisitedAffectedColor : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperVisitedAffectedColor(CSSPropertyID property, const Color& (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const Color&), const Color& (RenderStyle::*visitedGetter)() const, void (RenderStyle::*visitedSetter)(const Color&))
: AnimationPropertyWrapperBase(property)
, m_wrapper(makeUnique<PropertyWrapper<const Color&>>(property, getter, setter))
, m_visitedWrapper(makeUnique<PropertyWrapper<const Color&>>(property, visitedGetter, visitedSetter))
{
}
PropertyWrapperVisitedAffectedColor(CSSPropertyID property, MaybeInvalidColorTag, const Color& (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const Color&), const Color& (RenderStyle::*visitedGetter)() const, void (RenderStyle::*visitedSetter)(const Color&))
: AnimationPropertyWrapperBase(property)
, m_wrapper(makeUnique<PropertyWrapperMaybeInvalidColor>(property, getter, setter))
, m_visitedWrapper(makeUnique<PropertyWrapperMaybeInvalidColor>(property, visitedGetter, visitedSetter))
{
}
protected:
bool equals(const RenderStyle& a, const RenderStyle& b) const override
{
return m_wrapper->equals(a, b) && m_visitedWrapper->equals(a, b);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const override
{
m_wrapper->blend(destination, from, to, context);
m_visitedWrapper->blend(destination, from, to, context);
}
std::unique_ptr<AnimationPropertyWrapperBase> m_wrapper;
std::unique_ptr<AnimationPropertyWrapperBase> m_visitedWrapper;
private:
#if !LOG_DISABLED
void logBlend(const RenderStyle& from, const RenderStyle& to, const RenderStyle& destination, double progress) const final
{
m_wrapper->logBlend(from, to, destination, progress);
m_visitedWrapper->logBlend(from, to, destination, progress);
}
#endif
};
class AccentColorPropertyWrapper final : public PropertyWrapperMaybeInvalidColor {
WTF_MAKE_FAST_ALLOCATED;
public:
AccentColorPropertyWrapper()
: PropertyWrapperMaybeInvalidColor(CSSPropertyAccentColor, &RenderStyle::accentColor, &RenderStyle::setAccentColor)
{
}
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
return a.hasAutoAccentColor() == b.hasAutoAccentColor()
&& PropertyWrapperMaybeInvalidColor::equals(a, b);
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return !from.hasAutoAccentColor() && !to.hasAutoAccentColor();
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
if (canInterpolate(from, to, context.compositeOperation)) {
PropertyWrapperMaybeInvalidColor::blend(destination, from, to, context);
return;
}
ASSERT(!context.progress || context.progress == 1.0);
auto& blendingRenderStyle = context.progress ? to : from;
if (blendingRenderStyle.hasAutoAccentColor())
destination.setHasAutoAccentColor();
else
destination.setAccentColor(blendingRenderStyle.accentColor());
}
};
static bool canInterpolateCaretColor(const RenderStyle& from, const RenderStyle& to, bool visited)
{
if (visited)
return !from.hasVisitedLinkAutoCaretColor() && !to.hasVisitedLinkAutoCaretColor();
return !from.hasAutoCaretColor() && !to.hasAutoCaretColor();
}
class CaretColorPropertyWrapper final : public PropertyWrapperVisitedAffectedColor {
WTF_MAKE_FAST_ALLOCATED;
public:
CaretColorPropertyWrapper()
: PropertyWrapperVisitedAffectedColor(CSSPropertyCaretColor, MaybeInvalidColor, &RenderStyle::caretColor, &RenderStyle::setCaretColor, &RenderStyle::visitedLinkCaretColor, &RenderStyle::setVisitedLinkCaretColor)
{
}
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
return a.hasAutoCaretColor() == b.hasAutoCaretColor()
&& a.hasVisitedLinkAutoCaretColor() == b.hasVisitedLinkAutoCaretColor()
&& PropertyWrapperVisitedAffectedColor::equals(a, b);
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return canInterpolateCaretColor(from, to, false) || canInterpolateCaretColor(from, to, true);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
if (canInterpolateCaretColor(from, to, false))
m_wrapper->blend(destination, from, to, context);
else {
auto& blendingRenderStyle = context.progress < 0.5 ? from : to;
if (blendingRenderStyle.hasAutoCaretColor())
destination.setHasAutoCaretColor();
else
destination.setCaretColor(blendingRenderStyle.caretColor());
}
if (canInterpolateCaretColor(from, to, true))
m_visitedWrapper->blend(destination, from, to, context);
else {
auto& blendingRenderStyle = context.progress < 0.5 ? from : to;
if (blendingRenderStyle.hasVisitedLinkAutoCaretColor())
destination.setHasVisitedLinkAutoCaretColor();
else
destination.setVisitedLinkCaretColor(blendingRenderStyle.visitedLinkCaretColor());
}
}
};
// Wrapper base class for an animatable property in a FillLayer
class FillLayerAnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
FillLayerAnimationPropertyWrapperBase(CSSPropertyID property)
: m_property(property)
{
}
virtual ~FillLayerAnimationPropertyWrapperBase() = default;
CSSPropertyID property() const { return m_property; }
virtual bool equals(const FillLayer*, const FillLayer*) const = 0;
virtual void blend(FillLayer*, const FillLayer*, const FillLayer*, const CSSPropertyBlendingContext&) const = 0;
virtual bool canInterpolate(const FillLayer*, const FillLayer*) const { return true; }
#if !LOG_DISABLED
virtual void logBlend(const FillLayer* destination, const FillLayer*, const FillLayer*, double) const = 0;
#endif
private:
CSSPropertyID m_property;
};
template <typename T>
class FillLayerPropertyWrapperGetter : public FillLayerAnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
WTF_MAKE_NONCOPYABLE(FillLayerPropertyWrapperGetter);
public:
FillLayerPropertyWrapperGetter(CSSPropertyID property, T (FillLayer::*getter)() const)
: FillLayerAnimationPropertyWrapperBase(property)
, m_getter(getter)
{
}
protected:
bool equals(const FillLayer* a, const FillLayer* b) const override
{
if (a == b)
return true;
if (!a || !b)
return false;
return value(a) == value(b);
}
T value(const FillLayer* layer) const
{
return (layer->*m_getter)();
}
#if !LOG_DISABLED
void logBlend(const FillLayer* destination, const FillLayer* from, const FillLayer* to, double progress) const override
{
LOG_WITH_STREAM(Animations, stream << " blending " << getPropertyName(property()) << " from " << value(from) << " to " << value(to) << " at " << TextStream::FormatNumberRespectingIntegers(progress) << " -> " << value(destination));
}
#endif
private:
T (FillLayer::*m_getter)() const;
};
template <typename T>
class FillLayerPropertyWrapper final : public FillLayerPropertyWrapperGetter<const T&> {
WTF_MAKE_FAST_ALLOCATED;
public:
FillLayerPropertyWrapper(CSSPropertyID property, const T& (FillLayer::*getter)() const, void (FillLayer::*setter)(T))
: FillLayerPropertyWrapperGetter<const T&>(property, getter)
, m_setter(setter)
{
}
private:
void blend(FillLayer* destination, const FillLayer* from, const FillLayer* to, const CSSPropertyBlendingContext& context) const final
{
(destination->*this->m_setter)(blendFunc(this->value(from), this->value(to), context));
}
bool canInterpolate(const FillLayer* from, const FillLayer* to) const final
{
return canInterpolateLengthVariants(this->value(from), this->value(to));
}
#if !LOG_DISABLED
void logBlend(const FillLayer* destination, const FillLayer* from, const FillLayer* to, double progress) const final
{
LOG_WITH_STREAM(Animations, stream << " blending " << getPropertyName(FillLayerPropertyWrapperGetter<const T&>::property())
<< " from " << FillLayerPropertyWrapperGetter<const T&>::value(from)
<< " to " << FillLayerPropertyWrapperGetter<const T&>::value(to)
<< " at " << TextStream::FormatNumberRespectingIntegers(progress) << " -> " << FillLayerPropertyWrapperGetter<const T&>::value(destination));
}
#endif
void (FillLayer::*m_setter)(T);
};
class FillLayerPositionPropertyWrapper final : public FillLayerPropertyWrapperGetter<const Length&> {
WTF_MAKE_FAST_ALLOCATED;
public:
FillLayerPositionPropertyWrapper(CSSPropertyID property, const Length& (FillLayer::*lengthGetter)() const, void (FillLayer::*lengthSetter)(Length), Edge (FillLayer::*originGetter)() const, void (FillLayer::*originSetter)(Edge), Edge farEdge)
: FillLayerPropertyWrapperGetter<const Length&>(property, lengthGetter)
, m_lengthSetter(lengthSetter)
, m_originGetter(originGetter)
, m_originSetter(originSetter)
, m_farEdge(farEdge)
{
}
private:
bool equals(const FillLayer* a, const FillLayer* b) const final
{
if (a == b)
return true;
if (!a || !b)
return false;
auto fromLength = value(a);
auto toLength = value(b);
Edge fromEdge = (a->*m_originGetter)();
Edge toEdge = (b->*m_originGetter)();
return fromLength == toLength && fromEdge == toEdge;
}
void blend(FillLayer* destination, const FillLayer* from, const FillLayer* to, const CSSPropertyBlendingContext& context) const final
{
auto fromLength = value(from);
auto toLength = value(to);
Edge fromEdge = (from->*m_originGetter)();
Edge toEdge = (to->*m_originGetter)();
Edge destinationEdge = toEdge;
if (fromEdge != toEdge) {
// Convert the right/bottom into a calc expression,
if (fromEdge == m_farEdge)
fromLength = convertTo100PercentMinusLength(fromLength);
else if (toEdge == m_farEdge) {
toLength = convertTo100PercentMinusLength(toLength);
destinationEdge = fromEdge; // Now we have a calc(100% - l), it's relative to the left/top edge.
}
}
(destination->*m_originSetter)(destinationEdge);
(destination->*m_lengthSetter)(blendFunc(fromLength, toLength, context));
}
#if !LOG_DISABLED
void logBlend(const FillLayer* destination, const FillLayer* from, const FillLayer* to, double progress) const final
{
LOG_WITH_STREAM(Animations, stream << " blending " << getPropertyName(property()) << " from " << value(from) << " to " << value(to) << " at " << TextStream::FormatNumberRespectingIntegers(progress) << " -> " << value(destination));
}
#endif
void (FillLayer::*m_lengthSetter)(Length);
Edge (FillLayer::*m_originGetter)() const;
void (FillLayer::*m_originSetter)(Edge);
Edge m_farEdge;
};
template <typename T>
class FillLayerRefCountedPropertyWrapper : public FillLayerPropertyWrapperGetter<T*> {
WTF_MAKE_FAST_ALLOCATED;
public:
FillLayerRefCountedPropertyWrapper(CSSPropertyID property, T* (FillLayer::*getter)() const, void (FillLayer::*setter)(RefPtr<T>&&))
: FillLayerPropertyWrapperGetter<T*>(property, getter)
, m_setter(setter)
{
}
private:
void blend(FillLayer* destination, const FillLayer* from, const FillLayer* to, const CSSPropertyBlendingContext& context) const final
{
(destination->*this->m_setter)(blendFunc(this->value(from), this->value(to), context));
}
#if !LOG_DISABLED
void logBlend(const FillLayer* destination, const FillLayer* from, const FillLayer* to, double progress) const override
{
LOG_WITH_STREAM(Animations, stream << " blending " << getPropertyName(FillLayerPropertyWrapperGetter<T*>::property())
<< " from " << FillLayerPropertyWrapperGetter<T*>::value(from)
<< " to " << FillLayerPropertyWrapperGetter<T*>::value(to)
<< " at " << TextStream::FormatNumberRespectingIntegers(progress) << " -> " << FillLayerPropertyWrapperGetter<T*>::value(destination));
}
#endif
void (FillLayer::*m_setter)(RefPtr<T>&&);
};
class FillLayerStyleImagePropertyWrapper final : public FillLayerRefCountedPropertyWrapper<StyleImage> {
WTF_MAKE_FAST_ALLOCATED;
public:
FillLayerStyleImagePropertyWrapper(CSSPropertyID property, StyleImage* (FillLayer::*getter)() const, void (FillLayer::*setter)(RefPtr<StyleImage>&&))
: FillLayerRefCountedPropertyWrapper<StyleImage>(property, getter, setter)
{
}
private:
bool equals(const FillLayer* a, const FillLayer* b) const final
{
if (a == b)
return true;
if (!a || !b)
return false;
return arePointingToEqualData(value(a), value(b));
}
bool canInterpolate(const FillLayer* from, const FillLayer* to) const final
{
return value(from) && value(to);
}
#if !LOG_DISABLED
void logBlend(const FillLayer* destination, const FillLayer* from, const FillLayer* to, double progress) const final
{
LOG_WITH_STREAM(Animations, stream << " blending " << getPropertyName(this->property()) << " from " << this->value(from) << " to " << this->value(to) << " at " << TextStream::FormatNumberRespectingIntegers(progress) << " -> " << value(destination));
}
#endif
};
class FillLayersPropertyWrapper final : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
typedef const FillLayer& (RenderStyle::*LayersGetter)() const;
typedef FillLayer& (RenderStyle::*LayersAccessor)();
FillLayersPropertyWrapper(CSSPropertyID property, LayersGetter getter, LayersAccessor accessor)
: AnimationPropertyWrapperBase(property)
, m_layersGetter(getter)
, m_layersAccessor(accessor)
{
switch (property) {
case CSSPropertyBackgroundPositionX:
case CSSPropertyWebkitMaskPositionX:
m_fillLayerPropertyWrapper = makeUnique<FillLayerPositionPropertyWrapper>(property, &FillLayer::xPosition, &FillLayer::setXPosition, &FillLayer::backgroundXOrigin, &FillLayer::setBackgroundXOrigin, Edge::Right);
break;
case CSSPropertyBackgroundPositionY:
case CSSPropertyWebkitMaskPositionY:
m_fillLayerPropertyWrapper = makeUnique<FillLayerPositionPropertyWrapper>(property, &FillLayer::yPosition, &FillLayer::setYPosition, &FillLayer::backgroundYOrigin, &FillLayer::setBackgroundYOrigin, Edge::Bottom);
break;
case CSSPropertyBackgroundSize:
case CSSPropertyWebkitBackgroundSize:
case CSSPropertyMaskSize:
m_fillLayerPropertyWrapper = makeUnique<FillLayerPropertyWrapper<LengthSize>>(property, &FillLayer::sizeLength, &FillLayer::setSizeLength);
break;
case CSSPropertyBackgroundImage:
case CSSPropertyMaskImage:
m_fillLayerPropertyWrapper = makeUnique<FillLayerStyleImagePropertyWrapper>(property, &FillLayer::image, &FillLayer::setImage);
break;
default:
break;
}
}
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
if (&a == &b)
return true;
auto* fromLayer = &(a.*m_layersGetter)();
auto* toLayer = &(b.*m_layersGetter)();
while (fromLayer && toLayer) {
if (!m_fillLayerPropertyWrapper->equals(fromLayer, toLayer))
return false;
fromLayer = fromLayer->next();
toLayer = toLayer->next();
}
return true;
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
auto* fromLayer = &(from.*m_layersGetter)();
auto* toLayer = &(to.*m_layersGetter)();
while (fromLayer && toLayer) {
if (fromLayer->sizeType() != toLayer->sizeType())
return false;
if (!m_fillLayerPropertyWrapper->canInterpolate(fromLayer, toLayer))
return false;
fromLayer = fromLayer->next();
toLayer = toLayer->next();
}
return true;
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
auto* fromLayer = &(from.*m_layersGetter)();
auto* toLayer = &(to.*m_layersGetter)();
auto* dstLayer = &(destination.*m_layersAccessor)();
while (fromLayer && toLayer && dstLayer) {
dstLayer->setSizeType((context.progress ? toLayer : fromLayer)->sizeType());
m_fillLayerPropertyWrapper->blend(dstLayer, fromLayer, toLayer, context);
fromLayer = fromLayer->next();
toLayer = toLayer->next();
dstLayer = dstLayer->next();
}
}
#if !LOG_DISABLED
void logBlend(const RenderStyle& from, const RenderStyle& to, const RenderStyle& destination, double progress) const final
{
auto* fromLayer = &(from.*m_layersGetter)();
auto* toLayer = &(to.*m_layersGetter)();
auto* dstLayer = &(destination.*m_layersGetter)();
while (fromLayer && toLayer && dstLayer) {
m_fillLayerPropertyWrapper->logBlend(dstLayer, fromLayer, toLayer, progress);
fromLayer = fromLayer->next();
toLayer = toLayer->next();
dstLayer = dstLayer->next();
}
}
#endif
std::unique_ptr<FillLayerAnimationPropertyWrapperBase> m_fillLayerPropertyWrapper;
LayersGetter m_layersGetter;
LayersAccessor m_layersAccessor;
};
class ShorthandPropertyWrapper final : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
ShorthandPropertyWrapper(CSSPropertyID property, Vector<AnimationPropertyWrapperBase*> longhandWrappers)
: AnimationPropertyWrapperBase(property)
, m_propertyWrappers(WTFMove(longhandWrappers))
{
}
bool isShorthandWrapper() const final { return true; }
const Vector<AnimationPropertyWrapperBase*>& propertyWrappers() const { return m_propertyWrappers; }
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
if (&a == &b)
return true;
for (auto& wrapper : m_propertyWrappers) {
if (!wrapper->equals(a, b))
return false;
}
return true;
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
for (auto& wrapper : m_propertyWrappers)
wrapper->blend(destination, from, to, context);
}
#if !LOG_DISABLED
void logBlend(const RenderStyle& from, const RenderStyle& to, const RenderStyle& destination, double progress) const final
{
for (auto& wrapper : m_propertyWrappers)
wrapper->logBlend(from, to, destination, progress);
}
#endif
Vector<AnimationPropertyWrapperBase*> m_propertyWrappers;
};
class PropertyWrapperFlex final : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperFlex()
: AnimationPropertyWrapperBase(CSSPropertyFlex)
{
}
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
if (&a == &b)
return true;
return a.flexBasis() == b.flexBasis() && a.flexGrow() == b.flexGrow() && a.flexShrink() == b.flexShrink();
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return from.flexGrow() != to.flexGrow() && from.flexShrink() != to.flexShrink() && canInterpolateLengths(from.flexBasis(), to.flexBasis(), false);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
destination.setFlexBasis(blendFunc(from.flexBasis(), to.flexBasis(), context));
destination.setFlexGrow(blendFunc(from.flexGrow(), to.flexGrow(), context));
destination.setFlexShrink(blendFunc(from.flexShrink(), to.flexShrink(), context));
}
#if !LOG_DISABLED
void logBlend(const RenderStyle&, const RenderStyle&, const RenderStyle&, double progress) const final
{
// FIXME: better logging.
LOG_WITH_STREAM(Animations, stream << " blending flex at " << TextStream::FormatNumberRespectingIntegers(progress));
}
#endif
};
class PropertyWrapperSVGPaint final : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperSVGPaint(CSSPropertyID property, SVGPaintType (RenderStyle::*paintTypeGetter)() const, Color (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const Color&))
: AnimationPropertyWrapperBase(property)
, m_paintTypeGetter(paintTypeGetter)
, m_getter(getter)
, m_setter(setter)
{
}
private:
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
if (&a == &b)
return true;
if ((a.*m_paintTypeGetter)() != (b.*m_paintTypeGetter)())
return false;
// We only support animations between SVGPaints that are pure Color values.
// For everything else we must return true for this method, otherwise
// we will try to animate between values forever.
if ((a.*m_paintTypeGetter)() == SVGPaintType::RGBColor) {
Color fromColor = (a.*m_getter)();
Color toColor = (b.*m_getter)();
if (!fromColor.isValid() && !toColor.isValid())
return true;
if (!fromColor.isValid())
fromColor = Color();
if (!toColor.isValid())
toColor = Color();
return fromColor == toColor;
}
return true;
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
if ((from.*m_paintTypeGetter)() != SVGPaintType::RGBColor
|| (to.*m_paintTypeGetter)() != SVGPaintType::RGBColor)
return;
Color fromColor = (from.*m_getter)();
Color toColor = (to.*m_getter)();
if (!fromColor.isValid() && !toColor.isValid())
return;
if (!fromColor.isValid())
fromColor = Color();
if (!toColor.isValid())
toColor = Color();
(destination.*m_setter)(blendFunc(fromColor, toColor, context));
}
#if !LOG_DISABLED
void logBlend(const RenderStyle&, const RenderStyle&, const RenderStyle&, double progress) const final
{
// FIXME: better logging.
LOG_WITH_STREAM(Animations, stream << " blending SVGPaint at " << TextStream::FormatNumberRespectingIntegers(progress));
}
#endif
SVGPaintType (RenderStyle::*m_paintTypeGetter)() const;
Color (RenderStyle::*m_getter)() const;
void (RenderStyle::*m_setter)(const Color&);
};
class PropertyWrapperFontStyle final : public PropertyWrapper<std::optional<FontSelectionValue>> {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperFontStyle()
: PropertyWrapper<std::optional<FontSelectionValue>>(CSSPropertyFontStyle, &RenderStyle::fontItalic, &RenderStyle::setFontItalic)
{
}
private:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return from.fontItalic() && to.fontItalic() && from.fontDescription().fontStyleAxis() == FontStyleAxis::slnt && to.fontDescription().fontStyleAxis() == FontStyleAxis::slnt;
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
auto blendedStyleAxis = FontStyleAxis::slnt;
if (context.isDiscrete)
blendedStyleAxis = (context.progress < 0.5 ? from : to).fontDescription().fontStyleAxis();
auto fromFontItalic = from.fontItalic();
auto toFontItalic = to.fontItalic();
auto blendedFontItalic = context.progress < 0.5 ? fromFontItalic : toFontItalic;
if (!context.isDiscrete)
blendedFontItalic = blendFunc(fromFontItalic, toFontItalic, context);
auto* currentFontSelector = destination.fontCascade().fontSelector();
auto description = destination.fontDescription();
description.setItalic(blendedFontItalic);
description.setFontStyleAxis(blendedStyleAxis);
destination.setFontDescription(WTFMove(description));
destination.fontCascade().update(currentFontSelector);
}
};
template <typename T>
class AutoPropertyWrapper final : public PropertyWrapper<T> {
WTF_MAKE_FAST_ALLOCATED;
public:
AutoPropertyWrapper(CSSPropertyID property, T (RenderStyle::*getter)() const, void (RenderStyle::*setter)(T), bool (RenderStyle::*autoGetter)() const, void (RenderStyle::*autoSetter)(), std::optional<T> minValue = std::nullopt)
: PropertyWrapper<T>(property, getter, setter)
, m_autoGetter(autoGetter)
, m_autoSetter(autoSetter)
, m_minValue(minValue)
{
}
private:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return !(from.*m_autoGetter)() && !(to.*m_autoGetter)();
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
auto blendedValue = blendFunc(this->value(from), this->value(to), context);
if (m_minValue)
blendedValue = blendedValue > *m_minValue ? blendedValue : *m_minValue;
(destination.*this->m_setter)(blendedValue);
if (!context.isDiscrete)
return;
ASSERT(!context.progress || context.progress == 1.0);
if (!context.progress) {
if ((from.*m_autoGetter)())
(destination.*m_autoSetter)();
} else {
if ((to.*m_autoGetter)())
(destination.*m_autoSetter)();
}
}
bool (RenderStyle::*m_autoGetter)() const;
void (RenderStyle::*m_autoSetter)();
std::optional<T> m_minValue;
};
class FloatPropertyWrapper : public PropertyWrapper<float> {
WTF_MAKE_FAST_ALLOCATED;
public:
enum class ValueRange : uint8_t {
All,
NonNegative,
Positive
};
FloatPropertyWrapper(CSSPropertyID property, float (RenderStyle::*getter)() const, void (RenderStyle::*setter)(float), ValueRange valueRange = ValueRange::All)
: PropertyWrapper<float>(property, getter, setter)
, m_valueRange(valueRange)
{
}
protected:
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const override
{
auto blendedValue = blendFunc(value(from), value(to), context);
if (m_valueRange == ValueRange::NonNegative && blendedValue <= 0)
blendedValue = 0;
else if (m_valueRange == ValueRange::Positive && blendedValue < 0)
blendedValue = std::numeric_limits<float>::epsilon();
(destination.*m_setter)(blendedValue);
}
private:
ValueRange m_valueRange;
};
class VerticalAlignWrapper final : public LengthPropertyWrapper {
WTF_MAKE_FAST_ALLOCATED;
public:
VerticalAlignWrapper()
: LengthPropertyWrapper(CSSPropertyVerticalAlign, &RenderStyle::verticalAlignLength, &RenderStyle::setVerticalAlignLength, LengthPropertyWrapper::Flags::IsLengthPercentage)
{
}
private:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation compositeOperation) const final
{
return from.verticalAlign() == VerticalAlign::Length && to.verticalAlign() == VerticalAlign::Length && LengthPropertyWrapper::canInterpolate(from, to, compositeOperation);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
LengthPropertyWrapper::blend(destination, from, to, context);
auto& blendingStyle = context.isDiscrete && context.progress ? to : from;
destination.setVerticalAlign(blendingStyle.verticalAlign());
}
};
class TextIndentWrapper final : public LengthPropertyWrapper {
WTF_MAKE_FAST_ALLOCATED;
public:
TextIndentWrapper()
: LengthPropertyWrapper(CSSPropertyTextIndent, &RenderStyle::textIndent, &RenderStyle::setTextIndent, LengthPropertyWrapper::Flags::IsLengthPercentage)
{
}
private:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation compositeOperation) const final
{
if (from.textIndentLine() != to.textIndentLine())
return false;
if (from.textIndentType() != to.textIndentType())
return false;
return LengthPropertyWrapper::canInterpolate(from, to, compositeOperation);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
auto& blendingStyle = context.isDiscrete && context.progress ? to : from;
destination.setTextIndentLine(blendingStyle.textIndentLine());
destination.setTextIndentType(blendingStyle.textIndentType());
LengthPropertyWrapper::blend(destination, from, to, context);
}
};
class PerspectiveWrapper final : public FloatPropertyWrapper {
WTF_MAKE_FAST_ALLOCATED;
public:
PerspectiveWrapper()
: FloatPropertyWrapper(CSSPropertyPerspective, &RenderStyle::perspective, &RenderStyle::setPerspective, FloatPropertyWrapper::ValueRange::NonNegative)
{
}
private:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation compositeOperation) const final
{
if (!from.hasPerspective() || !to.hasPerspective())
return false;
return FloatPropertyWrapper::canInterpolate(from, to, compositeOperation);
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
if (context.isDiscrete)
(destination.*m_setter)(context.progress ? value(to) : value(from));
else
FloatPropertyWrapper::blend(destination, from, to, context);
}
};
class TabSizePropertyWrapper final : public PropertyWrapper<const TabSize&> {
WTF_MAKE_FAST_ALLOCATED;
public:
TabSizePropertyWrapper()
: PropertyWrapper<const TabSize&>(CSSPropertyTabSize, &RenderStyle::tabSize, &RenderStyle::setTabSize)
{
}
private:
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return value(from).isSpaces() == value(to).isSpaces();
}
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
if (context.isDiscrete)
(destination.*m_setter)(context.progress ? value(to) : value(from));
else
PropertyWrapper::blend(destination, from, to, context);
}
};
class PropertyWrapperAspectRatio final : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperAspectRatio()
: AnimationPropertyWrapperBase(CSSPropertyAspectRatio)
{
}
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
if (&a == &b)
return true;
return a.aspectRatioType() == b.aspectRatioType() && a.aspectRatioWidth() == b.aspectRatioWidth() && a.aspectRatioHeight() == b.aspectRatioHeight();
}
bool canInterpolate(const RenderStyle& from, const RenderStyle& to, CompositeOperation) const final
{
return (from.aspectRatioType() == AspectRatioType::Ratio && to.aspectRatioType() == AspectRatioType::Ratio) || (from.aspectRatioType() == AspectRatioType::AutoAndRatio && to.aspectRatioType() == AspectRatioType::AutoAndRatio);
}
#if !LOG_DISABLED
void logBlend(const RenderStyle& from, const RenderStyle& to, const RenderStyle& destination, double progress) const final
{
LOG_WITH_STREAM(Animations, stream << " blending " << getPropertyName(property()) << " from " << from.logicalAspectRatio() << " to " << to.logicalAspectRatio() << " at " << TextStream::FormatNumberRespectingIntegers(progress) << " -> " << destination.logicalAspectRatio());
}
#endif
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
destination.setAspectRatioType(context.progress < 0.5 ? from.aspectRatioType() : to.aspectRatioType());
if (!context.isDiscrete) {
auto aspectRatioDst = WebCore::blend(log(from.logicalAspectRatio()), log(to.logicalAspectRatio()), context);
destination.setAspectRatio(exp(aspectRatioDst), 1);
return;
}
// For auto/auto-zero aspect-ratio we use discrete values, we can't use general
// logic since logicalAspectRatio asserts on aspect-ratio type.
ASSERT(!context.progress || context.progress == 1);
auto& applicableStyle = context.progress ? to : from;
destination.setAspectRatio(applicableStyle.aspectRatioWidth(), applicableStyle.aspectRatioHeight());
}
};
class StrokeDasharrayPropertyWrapper final : public PropertyWrapper<Vector<SVGLengthValue>> {
WTF_MAKE_FAST_ALLOCATED;
public:
StrokeDasharrayPropertyWrapper()
: PropertyWrapper<Vector<SVGLengthValue>>(CSSPropertyStrokeDasharray, &RenderStyle::strokeDashArray, &RenderStyle::setStrokeDashArray)
{
}
private:
bool isAdditiveOrCumulative() const final
{
return false;
}
};
class PropertyWrapperContent final : public AnimationPropertyWrapperBase {
WTF_MAKE_FAST_ALLOCATED;
public:
PropertyWrapperContent()
: AnimationPropertyWrapperBase(CSSPropertyContent)
{
}
bool canInterpolate(const RenderStyle&, const RenderStyle&, CompositeOperation) const final { return false; }
bool equals(const RenderStyle& a, const RenderStyle& b) const final
{
if (!a.hasContent() && !b.hasContent())
return true;
if (a.hasContent() && b.hasContent())
return *a.contentData() == *b.contentData();
return false;
}
#if !LOG_DISABLED
void logBlend(const RenderStyle&, const RenderStyle&, const RenderStyle&, double progress) const final
{
LOG_WITH_STREAM(Animations, stream << " blending content at " << TextStream::FormatNumberRespectingIntegers(progress) << ".");
}
#endif
void blend(RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, const CSSPropertyBlendingContext& context) const final
{
ASSERT(context.isDiscrete);
ASSERT(!context.progress || context.progress == 1);
auto& style = context.progress ? to : from;
if (auto* content = style.contentData())
destination.setContent(content->clone(), false);
else
destination.clearContent();
}
};
class CSSPropertyAnimationWrapperMap final {
WTF_MAKE_FAST_ALLOCATED;
public:
static CSSPropertyAnimationWrapperMap& singleton()
{
// FIXME: This data is never destroyed. Maybe we should ref count it and toss it when the last CSSAnimationController is destroyed?
static NeverDestroyed<CSSPropertyAnimationWrapperMap> map;
return map;
}
AnimationPropertyWrapperBase* wrapperForProperty(CSSPropertyID propertyID)
{
if (propertyID < firstCSSProperty || propertyID > lastCSSProperty)
return nullptr;
unsigned wrapperIndex = indexFromPropertyID(propertyID);
if (wrapperIndex == cInvalidPropertyWrapperIndex)
return nullptr;
return m_propertyWrappers[wrapperIndex].get();
}
AnimationPropertyWrapperBase* wrapperForIndex(unsigned index)
{
ASSERT(index < m_propertyWrappers.size());
return m_propertyWrappers[index].get();
}
unsigned size()
{
return m_propertyWrappers.size();
}
private:
CSSPropertyAnimationWrapperMap();
~CSSPropertyAnimationWrapperMap() = delete;
unsigned char& indexFromPropertyID(CSSPropertyID propertyID)
{
return m_propertyToIdMap[propertyID - firstCSSProperty];
}
Vector<std::unique_ptr<AnimationPropertyWrapperBase>> m_propertyWrappers;
unsigned char m_propertyToIdMap[numCSSProperties];
static const unsigned char cInvalidPropertyWrapperIndex = UCHAR_MAX;
friend class WTF::NeverDestroyed<CSSPropertyAnimationWrapperMap>;
};
CSSPropertyAnimationWrapperMap::CSSPropertyAnimationWrapperMap()
{
// build the list of property wrappers to do the comparisons and blends
AnimationPropertyWrapperBase* animatableLonghandPropertyWrappers[] = {
new LengthPropertyWrapper(CSSPropertyLeft, &RenderStyle::left, &RenderStyle::setLeft, { LengthPropertyWrapper::Flags::IsLengthPercentage }),
new LengthPropertyWrapper(CSSPropertyRight, &RenderStyle::right, &RenderStyle::setRight, { LengthPropertyWrapper::Flags::IsLengthPercentage }),
new LengthPropertyWrapper(CSSPropertyTop, &RenderStyle::top, &RenderStyle::setTop, { LengthPropertyWrapper::Flags::IsLengthPercentage }),
new LengthPropertyWrapper(CSSPropertyBottom, &RenderStyle::bottom, &RenderStyle::setBottom, { LengthPropertyWrapper::Flags::IsLengthPercentage }),
new LengthPropertyWrapper(CSSPropertyWidth, &RenderStyle::width, &RenderStyle::setWidth, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new LengthPropertyWrapper(CSSPropertyMinWidth, &RenderStyle::minWidth, &RenderStyle::setMinWidth, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new LengthPropertyWrapper(CSSPropertyMaxWidth, &RenderStyle::maxWidth, &RenderStyle::setMaxWidth, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new LengthPropertyWrapper(CSSPropertyHeight, &RenderStyle::height, &RenderStyle::setHeight, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new LengthPropertyWrapper(CSSPropertyMinHeight, &RenderStyle::minHeight, &RenderStyle::setMinHeight, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new LengthPropertyWrapper(CSSPropertyMaxHeight, &RenderStyle::maxHeight, &RenderStyle::setMaxHeight, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new PropertyWrapperFlex(),
new FloatPropertyWrapper(CSSPropertyBorderLeftWidth, &RenderStyle::borderLeftWidth, &RenderStyle::setBorderLeftWidth, FloatPropertyWrapper::ValueRange::NonNegative),
new FloatPropertyWrapper(CSSPropertyBorderRightWidth, &RenderStyle::borderRightWidth, &RenderStyle::setBorderRightWidth, FloatPropertyWrapper::ValueRange::NonNegative),
new FloatPropertyWrapper(CSSPropertyBorderTopWidth, &RenderStyle::borderTopWidth, &RenderStyle::setBorderTopWidth, FloatPropertyWrapper::ValueRange::NonNegative),
new FloatPropertyWrapper(CSSPropertyBorderBottomWidth, &RenderStyle::borderBottomWidth, &RenderStyle::setBorderBottomWidth, FloatPropertyWrapper::ValueRange::NonNegative),
new LengthPropertyWrapper(CSSPropertyMarginLeft, &RenderStyle::marginLeft, &RenderStyle::setMarginLeft, { LengthPropertyWrapper::Flags::IsLengthPercentage }),
new LengthPropertyWrapper(CSSPropertyMarginRight, &RenderStyle::marginRight, &RenderStyle::setMarginRight, { LengthPropertyWrapper::Flags::IsLengthPercentage }),
new LengthPropertyWrapper(CSSPropertyMarginTop, &RenderStyle::marginTop, &RenderStyle::setMarginTop, { LengthPropertyWrapper::Flags::IsLengthPercentage }),
new LengthPropertyWrapper(CSSPropertyMarginBottom, &RenderStyle::marginBottom, &RenderStyle::setMarginBottom, { LengthPropertyWrapper::Flags::IsLengthPercentage }),
new LengthPropertyWrapper(CSSPropertyPaddingLeft, &RenderStyle::paddingLeft, &RenderStyle::setPaddingLeft, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new LengthPropertyWrapper(CSSPropertyPaddingRight, &RenderStyle::paddingRight, &RenderStyle::setPaddingRight, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new LengthPropertyWrapper(CSSPropertyPaddingTop, &RenderStyle::paddingTop, &RenderStyle::setPaddingTop, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new LengthPropertyWrapper(CSSPropertyPaddingBottom, &RenderStyle::paddingBottom, &RenderStyle::setPaddingBottom, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new AccentColorPropertyWrapper,
new CaretColorPropertyWrapper,
new PropertyWrapperVisitedAffectedColor(CSSPropertyColor, &RenderStyle::color, &RenderStyle::setColor, &RenderStyle::visitedLinkColor, &RenderStyle::setVisitedLinkColor),
new PropertyWrapperVisitedAffectedColor(CSSPropertyBackgroundColor, MaybeInvalidColor, &RenderStyle::backgroundColor, &RenderStyle::setBackgroundColor, &RenderStyle::visitedLinkBackgroundColor, &RenderStyle::setVisitedLinkBackgroundColor),
new FillLayersPropertyWrapper(CSSPropertyBackgroundImage, &RenderStyle::backgroundLayers, &RenderStyle::ensureBackgroundLayers),
new StyleImagePropertyWrapper(CSSPropertyListStyleImage, &RenderStyle::listStyleImage, &RenderStyle::setListStyleImage),
new FillLayersPropertyWrapper(CSSPropertyMaskImage, &RenderStyle::maskLayers, &RenderStyle::ensureMaskLayers),
new StyleImagePropertyWrapper(CSSPropertyBorderImageSource, &RenderStyle::borderImageSource, &RenderStyle::setBorderImageSource),
new LengthBoxPropertyWrapper(CSSPropertyBorderImageSlice, &RenderStyle::borderImageSlices, &RenderStyle::setBorderImageSlices, { LengthBoxPropertyWrapper::Flags::UsesFillKeyword }),
new LengthBoxPropertyWrapper(CSSPropertyBorderImageWidth, &RenderStyle::borderImageWidth, &RenderStyle::setBorderImageWidth, { LengthBoxPropertyWrapper::Flags::IsLengthPercentage }),
new LengthBoxPropertyWrapper(CSSPropertyBorderImageOutset, &RenderStyle::borderImageOutset, &RenderStyle::setBorderImageOutset),
new StyleImagePropertyWrapper(CSSPropertyWebkitMaskBoxImageSource, &RenderStyle::maskBoxImageSource, &RenderStyle::setMaskBoxImageSource),
new PropertyWrapper<const NinePieceImage&>(CSSPropertyWebkitMaskBoxImage, &RenderStyle::maskBoxImage, &RenderStyle::setMaskBoxImage),
new FillLayersPropertyWrapper(CSSPropertyBackgroundPositionX, &RenderStyle::backgroundLayers, &RenderStyle::ensureBackgroundLayers),
new FillLayersPropertyWrapper(CSSPropertyBackgroundPositionY, &RenderStyle::backgroundLayers, &RenderStyle::ensureBackgroundLayers),
new FillLayersPropertyWrapper(CSSPropertyBackgroundSize, &RenderStyle::backgroundLayers, &RenderStyle::ensureBackgroundLayers),
new FillLayersPropertyWrapper(CSSPropertyWebkitBackgroundSize, &RenderStyle::backgroundLayers, &RenderStyle::ensureBackgroundLayers),
new FillLayersPropertyWrapper(CSSPropertyWebkitMaskPositionX, &RenderStyle::maskLayers, &RenderStyle::ensureMaskLayers),
new FillLayersPropertyWrapper(CSSPropertyWebkitMaskPositionY, &RenderStyle::maskLayers, &RenderStyle::ensureMaskLayers),
new FillLayersPropertyWrapper(CSSPropertyMaskSize, &RenderStyle::maskLayers, &RenderStyle::ensureMaskLayers),
new LengthPointPropertyWrapper(CSSPropertyObjectPosition, &RenderStyle::objectPosition, &RenderStyle::setObjectPosition),
new PropertyWrapper<float>(CSSPropertyFontSize, &RenderStyle::computedFontSize, &RenderStyle::setFontSize),
new PropertyWrapper<unsigned short>(CSSPropertyColumnRuleWidth, &RenderStyle::columnRuleWidth, &RenderStyle::setColumnRuleWidth),
new LengthVariantPropertyWrapper<GapLength>(CSSPropertyColumnGap, &RenderStyle::columnGap, &RenderStyle::setColumnGap),
new LengthVariantPropertyWrapper<GapLength>(CSSPropertyRowGap, &RenderStyle::rowGap, &RenderStyle::setRowGap),
new AutoPropertyWrapper<unsigned short>(CSSPropertyColumnCount, &RenderStyle::columnCount, &RenderStyle::setColumnCount, &RenderStyle::hasAutoColumnCount, &RenderStyle::setHasAutoColumnCount, 1),
new AutoPropertyWrapper<float>(CSSPropertyColumnWidth, &RenderStyle::columnWidth, &RenderStyle::setColumnWidth, &RenderStyle::hasAutoColumnWidth, &RenderStyle::setHasAutoColumnWidth, 0),
new FloatPropertyWrapper(CSSPropertyWebkitBorderHorizontalSpacing, &RenderStyle::horizontalBorderSpacing, &RenderStyle::setHorizontalBorderSpacing, FloatPropertyWrapper::ValueRange::NonNegative),
new FloatPropertyWrapper(CSSPropertyWebkitBorderVerticalSpacing, &RenderStyle::verticalBorderSpacing, &RenderStyle::setVerticalBorderSpacing, FloatPropertyWrapper::ValueRange::NonNegative),
new AutoPropertyWrapper<int>(CSSPropertyZIndex, &RenderStyle::specifiedZIndex, &RenderStyle::setSpecifiedZIndex, &RenderStyle::hasAutoSpecifiedZIndex, &RenderStyle::setHasAutoSpecifiedZIndex),
new PositivePropertyWrapper<unsigned short>(CSSPropertyOrphans, &RenderStyle::orphans, &RenderStyle::setOrphans),
new PositivePropertyWrapper<unsigned short>(CSSPropertyWidows, &RenderStyle::widows, &RenderStyle::setWidows),
new LengthPropertyWrapper(CSSPropertyLineHeight, &RenderStyle::specifiedLineHeight, &RenderStyle::setLineHeight),
new PropertyWrapper<float>(CSSPropertyOutlineOffset, &RenderStyle::outlineOffset, &RenderStyle::setOutlineOffset),
new FloatPropertyWrapper(CSSPropertyOutlineWidth, &RenderStyle::outlineWidth, &RenderStyle::setOutlineWidth, FloatPropertyWrapper::ValueRange::NonNegative),
new PropertyWrapper<float>(CSSPropertyLetterSpacing, &RenderStyle::letterSpacing, &RenderStyle::setLetterSpacing),
new LengthPropertyWrapper(CSSPropertyWordSpacing, &RenderStyle::wordSpacing, &RenderStyle::setWordSpacing),
new TextIndentWrapper,
new VerticalAlignWrapper,
new PerspectiveWrapper,
new LengthPropertyWrapper(CSSPropertyPerspectiveOriginX, &RenderStyle::perspectiveOriginX, &RenderStyle::setPerspectiveOriginX, LengthPropertyWrapper::Flags::IsLengthPercentage),
new LengthPropertyWrapper(CSSPropertyPerspectiveOriginY, &RenderStyle::perspectiveOriginY, &RenderStyle::setPerspectiveOriginY, LengthPropertyWrapper::Flags::IsLengthPercentage),
new LengthPropertyWrapper(CSSPropertyTransformOriginX, &RenderStyle::transformOriginX, &RenderStyle::setTransformOriginX, LengthPropertyWrapper::Flags::IsLengthPercentage),
new LengthPropertyWrapper(CSSPropertyTransformOriginY, &RenderStyle::transformOriginY, &RenderStyle::setTransformOriginY, LengthPropertyWrapper::Flags::IsLengthPercentage),
new PropertyWrapper<float>(CSSPropertyTransformOriginZ, &RenderStyle::transformOriginZ, &RenderStyle::setTransformOriginZ),
new LengthVariantPropertyWrapper<LengthSize>(CSSPropertyBorderTopLeftRadius, &RenderStyle::borderTopLeftRadius, &RenderStyle::setBorderTopLeftRadius),
new LengthVariantPropertyWrapper<LengthSize>(CSSPropertyBorderTopRightRadius, &RenderStyle::borderTopRightRadius, &RenderStyle::setBorderTopRightRadius),
new LengthVariantPropertyWrapper<LengthSize>(CSSPropertyBorderBottomLeftRadius, &RenderStyle::borderBottomLeftRadius, &RenderStyle::setBorderBottomLeftRadius),
new LengthVariantPropertyWrapper<LengthSize>(CSSPropertyBorderBottomRightRadius, &RenderStyle::borderBottomRightRadius, &RenderStyle::setBorderBottomRightRadius),
new PropertyWrapper<Visibility>(CSSPropertyVisibility, &RenderStyle::visibility, &RenderStyle::setVisibility),
new FloatPropertyWrapper(CSSPropertyZoom, &RenderStyle::zoom, &RenderStyle::setZoomWithoutReturnValue, FloatPropertyWrapper::ValueRange::Positive),
new ClipWrapper,
new AcceleratedPropertyWrapper<float>(CSSPropertyOpacity, &RenderStyle::opacity, &RenderStyle::setOpacity),
new AcceleratedPropertyWrapper<const TransformOperations&>(CSSPropertyTransform, &RenderStyle::transform, &RenderStyle::setTransform),
new AcceleratedIndividualTransformPropertyWrapper<ScaleTransformOperation>(CSSPropertyScale, &RenderStyle::scale, &RenderStyle::setScale),
new AcceleratedIndividualTransformPropertyWrapper<RotateTransformOperation>(CSSPropertyRotate, &RenderStyle::rotate, &RenderStyle::setRotate),
new AcceleratedIndividualTransformPropertyWrapper<TranslateTransformOperation>(CSSPropertyTranslate, &RenderStyle::translate, &RenderStyle::setTranslate),
new PropertyWrapperFilter(CSSPropertyFilter, &RenderStyle::filter, &RenderStyle::setFilter),
#if ENABLE(FILTERS_LEVEL_2)
new PropertyWrapperFilter(CSSPropertyWebkitBackdropFilter, &RenderStyle::backdropFilter, &RenderStyle::setBackdropFilter),
#endif
new PropertyWrapperFilter(CSSPropertyAppleColorFilter, &RenderStyle::appleColorFilter, &RenderStyle::setAppleColorFilter),
new PathOperationPropertyWrapper(CSSPropertyClipPath, &RenderStyle::clipPath, &RenderStyle::setClipPath),
new PropertyWrapperShape(CSSPropertyShapeOutside, &RenderStyle::shapeOutside, &RenderStyle::setShapeOutside),
new LengthPropertyWrapper(CSSPropertyShapeMargin, &RenderStyle::shapeMargin, &RenderStyle::setShapeMargin, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new PropertyWrapper<float>(CSSPropertyShapeImageThreshold, &RenderStyle::shapeImageThreshold, &RenderStyle::setShapeImageThreshold),
new PropertyWrapperVisitedAffectedColor(CSSPropertyColumnRuleColor, MaybeInvalidColor, &RenderStyle::columnRuleColor, &RenderStyle::setColumnRuleColor, &RenderStyle::visitedLinkColumnRuleColor, &RenderStyle::setVisitedLinkColumnRuleColor),
new PropertyWrapperVisitedAffectedColor(CSSPropertyWebkitTextStrokeColor, MaybeInvalidColor, &RenderStyle::textStrokeColor, &RenderStyle::setTextStrokeColor, &RenderStyle::visitedLinkTextStrokeColor, &RenderStyle::setVisitedLinkTextStrokeColor),
new PropertyWrapperVisitedAffectedColor(CSSPropertyWebkitTextFillColor, MaybeInvalidColor, &RenderStyle::textFillColor, &RenderStyle::setTextFillColor, &RenderStyle::visitedLinkTextFillColor, &RenderStyle::setVisitedLinkTextFillColor),
new PropertyWrapperVisitedAffectedColor(CSSPropertyBorderLeftColor, MaybeInvalidColor, &RenderStyle::borderLeftColor, &RenderStyle::setBorderLeftColor, &RenderStyle::visitedLinkBorderLeftColor, &RenderStyle::setVisitedLinkBorderLeftColor),
new PropertyWrapperVisitedAffectedColor(CSSPropertyBorderRightColor, MaybeInvalidColor, &RenderStyle::borderRightColor, &RenderStyle::setBorderRightColor, &RenderStyle::visitedLinkBorderRightColor, &RenderStyle::setVisitedLinkBorderRightColor),
new PropertyWrapperVisitedAffectedColor(CSSPropertyBorderTopColor, MaybeInvalidColor, &RenderStyle::borderTopColor, &RenderStyle::setBorderTopColor, &RenderStyle::visitedLinkBorderTopColor, &RenderStyle::setVisitedLinkBorderTopColor),
new PropertyWrapperVisitedAffectedColor(CSSPropertyBorderBottomColor, MaybeInvalidColor, &RenderStyle::borderBottomColor, &RenderStyle::setBorderBottomColor, &RenderStyle::visitedLinkBorderBottomColor, &RenderStyle::setVisitedLinkBorderBottomColor),
new PropertyWrapperVisitedAffectedColor(CSSPropertyOutlineColor, MaybeInvalidColor, &RenderStyle::outlineColor, &RenderStyle::setOutlineColor, &RenderStyle::visitedLinkOutlineColor, &RenderStyle::setVisitedLinkOutlineColor),
new PropertyWrapperShadow(CSSPropertyBoxShadow, &RenderStyle::boxShadow, &RenderStyle::setBoxShadow),
new PropertyWrapperShadow(CSSPropertyWebkitBoxShadow, &RenderStyle::boxShadow, &RenderStyle::setBoxShadow),
new PropertyWrapperShadow(CSSPropertyTextShadow, &RenderStyle::textShadow, &RenderStyle::setTextShadow),
new PropertyWrapperSVGPaint(CSSPropertyFill, &RenderStyle::fillPaintType, &RenderStyle::fillPaintColor, &RenderStyle::setFillPaintColor),
new PropertyWrapper<float>(CSSPropertyFillOpacity, &RenderStyle::fillOpacity, &RenderStyle::setFillOpacity),
new PropertyWrapperSVGPaint(CSSPropertyStroke, &RenderStyle::strokePaintType, &RenderStyle::strokePaintColor, &RenderStyle::setStrokePaintColor),
new PropertyWrapper<float>(CSSPropertyStrokeOpacity, &RenderStyle::strokeOpacity, &RenderStyle::setStrokeOpacity),
new StrokeDasharrayPropertyWrapper,
new PropertyWrapper<float>(CSSPropertyStrokeMiterlimit, &RenderStyle::strokeMiterLimit, &RenderStyle::setStrokeMiterLimit),
new LengthPropertyWrapper(CSSPropertyCx, &RenderStyle::cx, &RenderStyle::setCx),
new LengthPropertyWrapper(CSSPropertyCy, &RenderStyle::cy, &RenderStyle::setCy),
new LengthPropertyWrapper(CSSPropertyR, &RenderStyle::r, &RenderStyle::setR),
new LengthPropertyWrapper(CSSPropertyRx, &RenderStyle::rx, &RenderStyle::setRx),
new LengthPropertyWrapper(CSSPropertyRy, &RenderStyle::ry, &RenderStyle::setRy),
new LengthPropertyWrapper(CSSPropertyStrokeDashoffset, &RenderStyle::strokeDashOffset, &RenderStyle::setStrokeDashOffset),
new LengthPropertyWrapper(CSSPropertyStrokeWidth, &RenderStyle::strokeWidth, &RenderStyle::setStrokeWidth),
new LengthPropertyWrapper(CSSPropertyX, &RenderStyle::x, &RenderStyle::setX),
new LengthPropertyWrapper(CSSPropertyY, &RenderStyle::y, &RenderStyle::setY),
new PropertyWrapper<float>(CSSPropertyFloodOpacity, &RenderStyle::floodOpacity, &RenderStyle::setFloodOpacity),
new PropertyWrapperMaybeInvalidColor(CSSPropertyFloodColor, &RenderStyle::floodColor, &RenderStyle::setFloodColor),
new PropertyWrapper<float>(CSSPropertyStopOpacity, &RenderStyle::stopOpacity, &RenderStyle::setStopOpacity),
new PropertyWrapperMaybeInvalidColor(CSSPropertyStopColor, &RenderStyle::stopColor, &RenderStyle::setStopColor),
new PropertyWrapperMaybeInvalidColor(CSSPropertyLightingColor, &RenderStyle::lightingColor, &RenderStyle::setLightingColor),
new PropertyWrapper<SVGLengthValue>(CSSPropertyBaselineShift, &RenderStyle::baselineShiftValue, &RenderStyle::setBaselineShiftValue),
new PropertyWrapper<SVGLengthValue>(CSSPropertyKerning, &RenderStyle::kerning, &RenderStyle::setKerning),
#if ENABLE(VARIATION_FONTS)
new PropertyWrapperFontVariationSettings(CSSPropertyFontVariationSettings, &RenderStyle::fontVariationSettings, &RenderStyle::setFontVariationSettings),
#endif
new PropertyWrapper<FontSelectionValue>(CSSPropertyFontWeight, &RenderStyle::fontWeight, &RenderStyle::setFontWeight),
new PropertyWrapper<FontSelectionValue>(CSSPropertyFontStretch, &RenderStyle::fontStretch, &RenderStyle::setFontStretch),
new PropertyWrapperFontStyle(),
new PropertyWrapper<TextDecorationThickness>(CSSPropertyTextDecorationThickness, &RenderStyle::textDecorationThickness, &RenderStyle::setTextDecorationThickness),
new PropertyWrapper<TextUnderlineOffset>(CSSPropertyTextUnderlineOffset, &RenderStyle::textUnderlineOffset, &RenderStyle::setTextUnderlineOffset),
new PropertyWrapperVisitedAffectedColor(CSSPropertyTextDecorationColor, &RenderStyle::textDecorationColor, &RenderStyle::setTextDecorationColor, &RenderStyle::visitedLinkTextDecorationColor, &RenderStyle::setVisitedLinkTextDecorationColor),
new LengthPropertyWrapper(CSSPropertyFlexBasis, &RenderStyle::flexBasis, &RenderStyle::setFlexBasis, { LengthPropertyWrapper::Flags::IsLengthPercentage, LengthPropertyWrapper::Flags::NegativeLengthsAreInvalid }),
new FloatPropertyWrapper(CSSPropertyFlexGrow, &RenderStyle::flexGrow, &RenderStyle::setFlexGrow, FloatPropertyWrapper::ValueRange::NonNegative),
new FloatPropertyWrapper(CSSPropertyFlexShrink, &RenderStyle::flexShrink, &RenderStyle::setFlexShrink, FloatPropertyWrapper::ValueRange::NonNegative),
new PropertyWrapper<int>(CSSPropertyOrder, &RenderStyle::order, &RenderStyle::setOrder),
new TabSizePropertyWrapper,
// FIXME: The following properties are currently not animatable but should be:
// background-blend-mode, clip-rule, color-interpolation,
// color-interpolation-filters, counter-increment, counter-reset, dominant-baseline,
// fill-rule, font-family, font-feature-settings, font-kerning, font-language-override,
// font-synthesis, font-variant-alternates, font-variant-caps, font-variant-east-asian,
// font-variant-ligatures, font-variant-numeric, font-variant-position, grid-template-areas,
// ime-mode, marker-end, marker-mid, marker-start, mask, mask-clip, mask-composite, mask-image,
// mask-mode, mask-origin, mask-repeat, mask-type, offset-distance, perspective-origin, quotes,
// ruby-align, scroll-behavior, shape-rendering, stroke-linecap, stroke-linejoin, text-align-last,
// text-anchor, text-emphasis-style, text-rendering, vector-effect
new DiscretePropertyWrapper<const StyleContentAlignmentData&>(CSSPropertyAlignContent, &RenderStyle::alignContent, &RenderStyle::setAlignContent),
new DiscretePropertyWrapper<const StyleSelfAlignmentData&>(CSSPropertyAlignItems, &RenderStyle::alignItems, &RenderStyle::setAlignItems),
new DiscretePropertyWrapper<const StyleSelfAlignmentData&>(CSSPropertyAlignSelf, &RenderStyle::alignSelf, &RenderStyle::setAlignSelf),
new DiscretePropertyWrapper<BackfaceVisibility>(CSSPropertyBackfaceVisibility, &RenderStyle::backfaceVisibility, &RenderStyle::setBackfaceVisibility),
new DiscretePropertyWrapper<FillAttachment>(CSSPropertyBackgroundAttachment, &RenderStyle::backgroundAttachment, &RenderStyle::setBackgroundAttachment),
new DiscretePropertyWrapper<FillBox>(CSSPropertyBackgroundClip, &RenderStyle::backgroundClip, &RenderStyle::setBackgroundClip),
new DiscretePropertyWrapper<FillBox>(CSSPropertyBackgroundOrigin, &RenderStyle::backgroundOrigin, &RenderStyle::setBackgroundOrigin),
new DiscretePropertyWrapper<FillRepeat>(CSSPropertyBackgroundRepeatX, &RenderStyle::backgroundRepeatX, &RenderStyle::setBackgroundRepeatX),
new DiscretePropertyWrapper<FillRepeat>(CSSPropertyBackgroundRepeatY, &RenderStyle::backgroundRepeatY, &RenderStyle::setBackgroundRepeatY),
new DiscretePropertyWrapper<BorderStyle>(CSSPropertyBorderBottomStyle, &RenderStyle::borderBottomStyle, &RenderStyle::setBorderBottomStyle),
new DiscretePropertyWrapper<BorderCollapse>(CSSPropertyBorderCollapse, &RenderStyle::borderCollapse, &RenderStyle::setBorderCollapse),
new BorderImageRepeatWrapper,
new DiscretePropertyWrapper<BorderStyle>(CSSPropertyBorderLeftStyle, &RenderStyle::borderLeftStyle, &RenderStyle::setBorderLeftStyle),
new DiscretePropertyWrapper<BorderStyle>(CSSPropertyBorderRightStyle, &RenderStyle::borderRightStyle, &RenderStyle::setBorderRightStyle),
new DiscretePropertyWrapper<BorderStyle>(CSSPropertyBorderTopStyle, &RenderStyle::borderTopStyle, &RenderStyle::setBorderTopStyle),
new DiscretePropertyWrapper<BoxSizing>(CSSPropertyBoxSizing, &RenderStyle::boxSizing, &RenderStyle::setBoxSizing),
new DiscretePropertyWrapper<CaptionSide>(CSSPropertyCaptionSide, &RenderStyle::captionSide, &RenderStyle::setCaptionSide),
new DiscretePropertyWrapper<Clear>(CSSPropertyClear, &RenderStyle::clear, &RenderStyle::setClear),
new DiscretePropertyWrapper<PrintColorAdjust>(CSSPropertyPrintColorAdjust, &RenderStyle::printColorAdjust, &RenderStyle::setPrintColorAdjust),
new DiscretePropertyWrapper<ColumnFill>(CSSPropertyColumnFill, &RenderStyle::columnFill, &RenderStyle::setColumnFill),
new DiscretePropertyWrapper<BorderStyle>(CSSPropertyColumnRuleStyle, &RenderStyle::columnRuleStyle, &RenderStyle::setColumnRuleStyle),
new DiscretePropertyWrapper<BorderStyle>(CSSPropertyColumnRuleStyle, &RenderStyle::columnRuleStyle, &RenderStyle::setColumnRuleStyle),
new DiscretePropertyWrapper<CursorType>(CSSPropertyCursor, &RenderStyle::cursor, &RenderStyle::setCursor),
new DiscretePropertyWrapper<EmptyCell>(CSSPropertyEmptyCells, &RenderStyle::emptyCells, &RenderStyle::setEmptyCells),
new DiscretePropertyWrapper<FlexDirection>(CSSPropertyFlexDirection, &RenderStyle::flexDirection, &RenderStyle::setFlexDirection),
new DiscretePropertyWrapper<FlexWrap>(CSSPropertyFlexWrap, &RenderStyle::flexWrap, &RenderStyle::setFlexWrap),
new DiscretePropertyWrapper<Float>(CSSPropertyFloat, &RenderStyle::floating, &RenderStyle::setFloating),
new DiscretePropertyWrapper<const Vector<GridTrackSize>&>(CSSPropertyGridAutoColumns, &RenderStyle::gridAutoColumns, &RenderStyle::setGridAutoColumns),
new DiscretePropertyWrapper<GridAutoFlow>(CSSPropertyGridAutoFlow, &RenderStyle::gridAutoFlow, &RenderStyle::setGridAutoFlow),
new DiscretePropertyWrapper<const Vector<GridTrackSize>&>(CSSPropertyGridAutoRows, &RenderStyle::gridAutoRows, &RenderStyle::setGridAutoRows),
new GridTemplateTracksWrapper<ForColumns>,
new GridTemplateTracksWrapper<ForRows>,
new DiscretePropertyWrapper<const GridPosition&>(CSSPropertyGridColumnEnd, &RenderStyle::gridItemColumnEnd, &RenderStyle::setGridItemColumnEnd),
new DiscretePropertyWrapper<const GridPosition&>(CSSPropertyGridColumnStart, &RenderStyle::gridItemColumnStart, &RenderStyle::setGridItemColumnStart),
new DiscretePropertyWrapper<const GridPosition&>(CSSPropertyGridRowEnd, &RenderStyle::gridItemRowEnd, &RenderStyle::setGridItemRowEnd),
new DiscretePropertyWrapper<const GridPosition&>(CSSPropertyGridRowStart, &RenderStyle::gridItemRowStart, &RenderStyle::setGridItemRowStart),
new DiscretePropertyWrapper<Hyphens>(CSSPropertyWebkitHyphens, &RenderStyle::hyphens, &RenderStyle::setHyphens),
new DiscretePropertyWrapper<ImageOrientation>(CSSPropertyImageOrientation, &RenderStyle::imageOrientation, &RenderStyle::setImageOrientation),
new DiscretePropertyWrapper<const IntSize&>(CSSPropertyWebkitInitialLetter, &RenderStyle::initialLetter, &RenderStyle::setInitialLetter),
new DiscretePropertyWrapper<const StyleContentAlignmentData&>(CSSPropertyJustifyContent, &RenderStyle::justifyContent, &RenderStyle::setJustifyContent),
new DiscretePropertyWrapper<const StyleSelfAlignmentData&>(CSSPropertyJustifyItems, &RenderStyle::justifyItems, &RenderStyle::setJustifyItems),
new DiscretePropertyWrapper<const StyleSelfAlignmentData&>(CSSPropertyJustifySelf, &RenderStyle::justifySelf, &RenderStyle::setJustifySelf),
new DiscretePropertyWrapper<ListStylePosition>(CSSPropertyListStylePosition, &RenderStyle::listStylePosition, &RenderStyle::setListStylePosition),
new DiscretePropertyWrapper<ListStyleType>(CSSPropertyListStyleType, &RenderStyle::listStyleType, &RenderStyle::setListStyleType),
new DiscretePropertyWrapper<ObjectFit>(CSSPropertyObjectFit, &RenderStyle::objectFit, &RenderStyle::setObjectFit),
new DiscretePropertyWrapper<BorderStyle>(CSSPropertyOutlineStyle, &RenderStyle::outlineStyle, &RenderStyle::setOutlineStyle),
new DiscretePropertyWrapper<OverflowWrap>(CSSPropertyOverflowWrap, &RenderStyle::overflowWrap, &RenderStyle::setOverflowWrap),
new DiscretePropertyWrapper<Overflow>(CSSPropertyOverflowX, &RenderStyle::overflowX, &RenderStyle::setOverflowX),
new DiscretePropertyWrapper<Overflow>(CSSPropertyOverflowY, &RenderStyle::overflowY, &RenderStyle::setOverflowY),
new DiscretePropertyWrapper<BreakBetween>(CSSPropertyBreakAfter, &RenderStyle::breakAfter, &RenderStyle::setBreakAfter),
new DiscretePropertyWrapper<BreakBetween>(CSSPropertyBreakBefore, &RenderStyle::breakBefore, &RenderStyle::setBreakBefore),
new DiscretePropertyWrapper<BreakInside>(CSSPropertyBreakInside, &RenderStyle::breakInside, &RenderStyle::setBreakInside),
new DiscretePropertyWrapper<PaintOrder>(CSSPropertyPaintOrder, &RenderStyle::paintOrder, &RenderStyle::setPaintOrder),
new DiscretePropertyWrapper<PointerEvents>(CSSPropertyPointerEvents, &RenderStyle::pointerEvents, &RenderStyle::setPointerEvents),
new DiscretePropertyWrapper<PositionType>(CSSPropertyPosition, &RenderStyle::position, &RenderStyle::setPosition),
new DiscretePropertyWrapper<Resize>(CSSPropertyResize, &RenderStyle::resize, &RenderStyle::setResize),
new DiscretePropertyWrapper<RubyPosition>(CSSPropertyWebkitRubyPosition, &RenderStyle::rubyPosition, &RenderStyle::setRubyPosition),
new DiscretePropertyWrapper<TableLayoutType>(CSSPropertyTableLayout, &RenderStyle::tableLayout, &RenderStyle::setTableLayout),
new DiscretePropertyWrapper<TextAlignMode>(CSSPropertyTextAlign, &RenderStyle::textAlign, &RenderStyle::setTextAlign),
new DiscretePropertyWrapper<OptionSet<TextDecorationLine>>(CSSPropertyTextDecorationLine, &RenderStyle::textDecoration, &RenderStyle::setTextDecoration),
new DiscretePropertyWrapper<TextDecorationStyle>(CSSPropertyTextDecorationStyle, &RenderStyle::textDecorationStyle, &RenderStyle::setTextDecorationStyle),
new DiscretePropertyWrapper<const Color&>(CSSPropertyTextEmphasisColor, &RenderStyle::textEmphasisColor, &RenderStyle::setTextEmphasisColor),
new DiscretePropertyWrapper<OptionSet<TextEmphasisPosition>>(CSSPropertyTextEmphasisPosition, &RenderStyle::textEmphasisPosition, &RenderStyle::setTextEmphasisPosition),
new DiscretePropertyWrapper<TextOverflow>(CSSPropertyTextOverflow, &RenderStyle::textOverflow, &RenderStyle::setTextOverflow),
new DiscretePropertyWrapper<OptionSet<TouchAction>>(CSSPropertyTouchAction, &RenderStyle::touchActions, &RenderStyle::setTouchActions),
new DiscretePropertyWrapper<TextTransform>(CSSPropertyTextTransform, &RenderStyle::textTransform, &RenderStyle::setTextTransform),
new DiscretePropertyWrapper<TransformBox>(CSSPropertyTransformBox, &RenderStyle::transformBox, &RenderStyle::setTransformBox),
new DiscretePropertyWrapper<TransformStyle3D>(CSSPropertyTransformStyle, &RenderStyle::transformStyle3D, &RenderStyle::setTransformStyle3D),
new DiscretePropertyWrapper<WhiteSpace>(CSSPropertyWhiteSpace, &RenderStyle::whiteSpace, &RenderStyle::setWhiteSpace),
new DiscretePropertyWrapper<WordBreak>(CSSPropertyWordBreak, &RenderStyle::wordBreak, &RenderStyle::setWordBreak),
#if ENABLE(CSS_BOX_DECORATION_BREAK)
new DiscretePropertyWrapper<BoxDecorationBreak>(CSSPropertyWebkitBoxDecorationBreak, &RenderStyle::boxDecorationBreak, &RenderStyle::setBoxDecorationBreak),
#endif
#if ENABLE(CSS_COMPOSITING)
new DiscretePropertyWrapper<Isolation>(CSSPropertyIsolation, &RenderStyle::isolation, &RenderStyle::setIsolation),
new DiscretePropertyWrapper<BlendMode>(CSSPropertyMixBlendMode, &RenderStyle::blendMode, &RenderStyle::setBlendMode),
#endif
new PropertyWrapperAspectRatio,
new DiscretePropertyWrapper<FontPalette>(CSSPropertyFontPalette, &RenderStyle::fontPalette, &RenderStyle::setFontPalette),
new PathOperationPropertyWrapper(CSSPropertyOffsetPath, &RenderStyle::offsetPath, &RenderStyle::setOffsetPath),
new LengthPropertyWrapper(CSSPropertyOffsetDistance, &RenderStyle::offsetDistance, &RenderStyle::setOffsetDistance, LengthPropertyWrapper::Flags::IsLengthPercentage),
new LengthPointOrAutoPropertyWrapper(CSSPropertyOffsetPosition, &RenderStyle::offsetPosition, &RenderStyle::setOffsetPosition),
new LengthPointOrAutoPropertyWrapper(CSSPropertyOffsetAnchor, &RenderStyle::offsetAnchor, &RenderStyle::setOffsetAnchor),
new PropertyWrapperContent,
new OffsetRotatePropertyWrapper(CSSPropertyOffsetRotate, &RenderStyle::offsetRotate, &RenderStyle::setOffsetRotate)
};
const unsigned animatableLonghandPropertiesCount = WTF_ARRAY_LENGTH(animatableLonghandPropertyWrappers);
static const CSSPropertyID animatableShorthandProperties[] = {
CSSPropertyBackground, // for background-color, background-position, background-image
CSSPropertyBackgroundPosition,
CSSPropertyBackgroundRepeat,
CSSPropertyFont, // for font-size, font-weight
CSSPropertyMask, // for mask-position
CSSPropertyWebkitMask, // for mask-position
CSSPropertyMaskPosition,
CSSPropertyWebkitMaskPosition,
CSSPropertyBorderTop, CSSPropertyBorderRight, CSSPropertyBorderBottom, CSSPropertyBorderLeft,
CSSPropertyBorderColor,
CSSPropertyBorderRadius,
CSSPropertyBorderWidth,
CSSPropertyBorder,
CSSPropertyBorderImage,
CSSPropertyBorderSpacing,
CSSPropertyListStyle, // for list-style-image
CSSPropertyMargin,
CSSPropertyOutline,
CSSPropertyPadding,
CSSPropertyPageBreakAfter,
CSSPropertyPageBreakBefore,
CSSPropertyPageBreakInside,
CSSPropertyWebkitTextStroke,
CSSPropertyColumnRule,
CSSPropertyWebkitBorderRadius,
CSSPropertyTransformOrigin,
CSSPropertyPerspectiveOrigin
};
const unsigned animatableShorthandPropertiesCount = WTF_ARRAY_LENGTH(animatableShorthandProperties);
// TODO:
//
// CSSPropertyVerticalAlign
//
// Compound properties that have components that should be animatable:
//
// CSSPropertyColumns
// CSSPropertyWebkitBoxReflect
// Make sure unused slots have a value
for (int i = 0; i < numCSSProperties; ++i)
m_propertyToIdMap[i] = cInvalidPropertyWrapperIndex;
COMPILE_ASSERT(animatableLonghandPropertiesCount + animatableShorthandPropertiesCount < UCHAR_MAX, numberOfAnimatablePropertiesMustBeLessThanUCharMax);
m_propertyWrappers.reserveInitialCapacity(animatableLonghandPropertiesCount + animatableShorthandPropertiesCount);
// First we put the non-shorthand property wrappers into the map, so the shorthand-building
// code can find them.
for (unsigned i = 0; i < animatableLonghandPropertiesCount; ++i) {
AnimationPropertyWrapperBase* wrapper = animatableLonghandPropertyWrappers[i];
m_propertyWrappers.uncheckedAppend(std::unique_ptr<AnimationPropertyWrapperBase>(wrapper));
indexFromPropertyID(wrapper->property()) = i;
}
for (size_t i = 0; i < animatableShorthandPropertiesCount; ++i) {
CSSPropertyID propertyID = animatableShorthandProperties[i];
auto shorthand = shorthandForProperty(propertyID);
if (!shorthand.length())
continue;
Vector<AnimationPropertyWrapperBase*> longhandWrappers;
longhandWrappers.reserveInitialCapacity(shorthand.length());
for (auto longhand : shorthand) {
unsigned wrapperIndex = indexFromPropertyID(longhand);
if (wrapperIndex == cInvalidPropertyWrapperIndex)
continue;
ASSERT(m_propertyWrappers[wrapperIndex]);
longhandWrappers.uncheckedAppend(m_propertyWrappers[wrapperIndex].get());
}
m_propertyWrappers.uncheckedAppend(makeUnique<ShorthandPropertyWrapper>(propertyID, WTFMove(longhandWrappers)));
indexFromPropertyID(propertyID) = animatableLonghandPropertiesCount + i;
}
}
static bool gatherEnclosingShorthandProperties(CSSPropertyID property, AnimationPropertyWrapperBase* wrapper, HashSet<CSSPropertyID>& propertySet)
{
if (!wrapper->isShorthandWrapper())
return false;
ShorthandPropertyWrapper* shorthandWrapper = static_cast<ShorthandPropertyWrapper*>(wrapper);
bool contained = false;
for (auto& currWrapper : shorthandWrapper->propertyWrappers()) {
if (gatherEnclosingShorthandProperties(property, currWrapper, propertySet) || currWrapper->property() == property)
contained = true;
}
if (contained)
propertySet.add(wrapper->property());
return contained;
}
void CSSPropertyAnimation::blendProperties(const CSSPropertyBlendingClient* client, CSSPropertyID property, RenderStyle& destination, const RenderStyle& from, const RenderStyle& to, double progress, CompositeOperation compositeOperation)
{
ASSERT(property != CSSPropertyInvalid);
AnimationPropertyWrapperBase* wrapper = CSSPropertyAnimationWrapperMap::singleton().wrapperForProperty(property);
if (wrapper) {
// https://drafts.csswg.org/web-animations-1/#discrete
// The property's values cannot be meaningfully combined, thus it is not additive and
// interpolation swaps from Va to Vb at 50% (p=0.5).
auto isDiscrete = !wrapper->canInterpolate(from, to, compositeOperation);
if (isDiscrete) {
// If we want additive, we should specify progress at 0 actually and return from.
progress = progress < 0.5 ? 0 : 1;
compositeOperation = CompositeOperation::Replace;
}
wrapper->blend(destination, from, to, { progress, isDiscrete, compositeOperation, client });
#if !LOG_DISABLED
wrapper->logBlend(from, to, destination, progress);
#endif
}
}
bool CSSPropertyAnimation::isPropertyAnimatable(CSSPropertyID property)
{
return CSSPropertyAnimationWrapperMap::singleton().wrapperForProperty(property);
}
bool CSSPropertyAnimation::isPropertyAdditiveOrCumulative(CSSPropertyID property)
{
AnimationPropertyWrapperBase* wrapper = CSSPropertyAnimationWrapperMap::singleton().wrapperForProperty(property);
return wrapper ? wrapper->isAdditiveOrCumulative() : false;
}
bool CSSPropertyAnimation::animationOfPropertyIsAccelerated(CSSPropertyID property)
{
AnimationPropertyWrapperBase* wrapper = CSSPropertyAnimationWrapperMap::singleton().wrapperForProperty(property);
return wrapper ? wrapper->animationIsAccelerated() : false;
}
// Note: this is inefficient. It's only called from pauseTransitionAtTime().
HashSet<CSSPropertyID> CSSPropertyAnimation::animatableShorthandsAffectingProperty(CSSPropertyID property)
{
CSSPropertyAnimationWrapperMap& map = CSSPropertyAnimationWrapperMap::singleton();
HashSet<CSSPropertyID> foundProperties;
for (unsigned i = 0; i < map.size(); ++i)
gatherEnclosingShorthandProperties(property, map.wrapperForIndex(i), foundProperties);
return foundProperties;
}
bool CSSPropertyAnimation::propertiesEqual(CSSPropertyID property, const RenderStyle& a, const RenderStyle& b)
{
AnimationPropertyWrapperBase* wrapper = CSSPropertyAnimationWrapperMap::singleton().wrapperForProperty(property);
if (wrapper)
return wrapper->equals(a, b);
return true;
}
bool CSSPropertyAnimation::canPropertyBeInterpolated(CSSPropertyID property, const RenderStyle& from, const RenderStyle& to)
{
AnimationPropertyWrapperBase* wrapper = CSSPropertyAnimationWrapperMap::singleton().wrapperForProperty(property);
if (wrapper)
return wrapper->canInterpolate(from, to, CompositeOperation::Replace);
return false;
}
CSSPropertyID CSSPropertyAnimation::getPropertyAtIndex(int i, std::optional<bool>& isShorthand)
{
CSSPropertyAnimationWrapperMap& map = CSSPropertyAnimationWrapperMap::singleton();
if (i < 0 || static_cast<unsigned>(i) >= map.size())
return CSSPropertyInvalid;
AnimationPropertyWrapperBase* wrapper = map.wrapperForIndex(i);
isShorthand = wrapper->isShorthandWrapper();
return wrapper->property();
}
int CSSPropertyAnimation::getNumProperties()
{
return CSSPropertyAnimationWrapperMap::singleton().size();
}
}