forked from burg/timelapse
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CSSPropertyAnimation.cpp
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CSSPropertyAnimation.cpp
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/*
* Copyright (C) 2007, 2008, 2009 Apple Inc. 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 Computer, 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 "AnimationBase.h"
#include "CSSCrossfadeValue.h"
#include "CSSImageGeneratorValue.h"
#include "CSSImageValue.h"
#include "CSSPrimitiveValue.h"
#include "CSSPropertyNames.h"
#include "FloatConversion.h"
#include "IdentityTransformOperation.h"
#include "Matrix3DTransformOperation.h"
#include "MatrixTransformOperation.h"
#include "RenderBox.h"
#include "RenderStyle.h"
#include "StyleCachedImage.h"
#include "StyleGeneratedImage.h"
#include "StylePropertyShorthand.h"
#include "StyleResolver.h"
#include <algorithm>
#include <wtf/Noncopyable.h>
#include <wtf/RefCounted.h>
namespace WebCore {
static inline int blendFunc(const AnimationBase*, int from, int to, double progress)
{
return blend(from, to, progress);
}
static inline unsigned blendFunc(const AnimationBase*, unsigned from, unsigned to, double progress)
{
return blend(from, to, progress);
}
static inline double blendFunc(const AnimationBase*, double from, double to, double progress)
{
return blend(from, to, progress);
}
static inline float blendFunc(const AnimationBase*, float from, float to, double progress)
{
return narrowPrecisionToFloat(from + (to - from) * progress);
}
static inline Color blendFunc(const AnimationBase*, const Color& from, const Color& to, double progress)
{
return blend(from, to, progress);
}
static inline Length blendFunc(const AnimationBase*, const Length& from, const Length& to, double progress)
{
return to.blend(from, narrowPrecisionToFloat(progress));
}
static inline LengthSize blendFunc(const AnimationBase* anim, const LengthSize& from, const LengthSize& to, double progress)
{
return LengthSize(blendFunc(anim, from.width(), to.width(), progress),
blendFunc(anim, from.height(), to.height(), progress));
}
static inline IntSize blendFunc(const AnimationBase* anim, const IntSize& from, const IntSize& to, double progress)
{
return IntSize(blendFunc(anim, from.width(), to.width(), progress),
blendFunc(anim, from.height(), to.height(), progress));
}
static inline ShadowStyle blendFunc(const AnimationBase* anim, ShadowStyle from, ShadowStyle to, double progress)
{
if (from == to)
return to;
double fromVal = from == Normal ? 1 : 0;
double toVal = to == Normal ? 1 : 0;
double result = blendFunc(anim, fromVal, toVal, progress);
return result > 0 ? Normal : Inset;
}
static inline PassOwnPtr<ShadowData> blendFunc(const AnimationBase* anim, const ShadowData* from, const ShadowData* to, double progress)
{
ASSERT(from && to);
if (from->style() != to->style())
return adoptPtr(new ShadowData(*to));
return adoptPtr(new ShadowData(blend(from->location(), to->location(), progress),
blend(from->blur(), to->blur(), progress),
blend(from->spread(), to->spread(), progress),
blendFunc(anim, from->style(), to->style(), progress),
from->isWebkitBoxShadow(),
blend(from->color(), to->color(), progress)));
}
static inline TransformOperations blendFunc(const AnimationBase* anim, const TransformOperations& from, const TransformOperations& to, double progress)
{
TransformOperations result;
// If we have a transform function list, use that to do a per-function animation. Otherwise do a Matrix animation
if (anim->isTransformFunctionListValid()) {
unsigned fromSize = from.operations().size();
unsigned toSize = to.operations().size();
unsigned size = max(fromSize, toSize);
for (unsigned i = 0; i < size; i++) {
RefPtr<TransformOperation> fromOp = (i < fromSize) ? from.operations()[i].get() : 0;
RefPtr<TransformOperation> toOp = (i < toSize) ? to.operations()[i].get() : 0;
RefPtr<TransformOperation> blendedOp = toOp ? toOp->blend(fromOp.get(), progress) : (fromOp ? fromOp->blend(0, progress, true) : PassRefPtr<TransformOperation>(0));
if (blendedOp)
result.operations().append(blendedOp);
else {
RefPtr<TransformOperation> identityOp = IdentityTransformOperation::create();
if (progress > 0.5)
result.operations().append(toOp ? toOp : identityOp);
else
result.operations().append(fromOp ? fromOp : identityOp);
}
}
} else {
// Convert the TransformOperations into matrices
LayoutSize size = anim->renderer()->isBox() ? toRenderBox(anim->renderer())->borderBoxRect().size() : LayoutSize();
TransformationMatrix fromT;
TransformationMatrix toT;
from.apply(size, fromT);
to.apply(size, toT);
toT.blend(fromT, progress);
// Append the result
result.operations().append(Matrix3DTransformOperation::create(toT));
}
return result;
}
#if ENABLE(CSS_FILTERS)
static inline FilterOperations blendFunc(const AnimationBase* anim, const FilterOperations& from, const FilterOperations& to, double progress)
{
FilterOperations result;
// If we have a filter function list, use that to do a per-function animation.
if (anim->filterFunctionListsMatch()) {
size_t fromSize = from.operations().size();
size_t toSize = to.operations().size();
size_t size = max(fromSize, toSize);
for (size_t i = 0; i < size; i++) {
RefPtr<FilterOperation> fromOp = (i < fromSize) ? from.operations()[i].get() : 0;
RefPtr<FilterOperation> toOp = (i < toSize) ? to.operations()[i].get() : 0;
RefPtr<FilterOperation> blendedOp = toOp ? toOp->blend(fromOp.get(), progress) : (fromOp ? fromOp->blend(0, progress, true) : PassRefPtr<FilterOperation>(0));
if (blendedOp)
result.operations().append(blendedOp);
else {
RefPtr<FilterOperation> identityOp = PassthroughFilterOperation::create();
if (progress > 0.5)
result.operations().append(toOp ? toOp : identityOp);
else
result.operations().append(fromOp ? fromOp : identityOp);
}
}
} 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;
}
#endif // ENABLE(CSS_FILTERS)
static inline EVisibility blendFunc(const AnimationBase* anim, EVisibility from, EVisibility to, double progress)
{
// 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 (HIDDEN vs. COLLAPSE) depends on the specified from/to values.
double fromVal = from == VISIBLE ? 1. : 0.;
double toVal = to == VISIBLE ? 1. : 0.;
if (fromVal == toVal)
return to;
double result = blendFunc(anim, fromVal, toVal, progress);
return result > 0. ? VISIBLE : (to != VISIBLE ? to : from);
}
static inline LengthBox blendFunc(const AnimationBase* anim, const LengthBox& from, const LengthBox& to, double progress)
{
// Length types have to match to animate
if (from.top().type() != to.top().type()
|| from.right().type() != to.right().type()
|| from.bottom().type() != to.bottom().type()
|| from.left().type() != to.left().type())
return to;
LengthBox result(blendFunc(anim, from.top(), to.top(), progress),
blendFunc(anim, from.right(), to.right(), progress),
blendFunc(anim, from.bottom(), to.bottom(), progress),
blendFunc(anim, from.left(), to.left(), progress));
return result;
}
#if ENABLE(SVG)
static inline SVGLength blendFunc(const AnimationBase*, const SVGLength& from, const SVGLength& to, double progress)
{
return to.blend(from, narrowPrecisionToFloat(progress));
}
#endif
static inline PassRefPtr<StyleImage> crossfadeBlend(const AnimationBase*, StyleCachedImage* fromStyleImage, StyleCachedImage* toStyleImage, double progress)
{
// 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 (!progress)
return fromStyleImage;
if (progress == 1)
return toStyleImage;
CachedImage* fromCachedImage = static_cast<CachedImage*>(fromStyleImage->data());
CachedImage* toCachedImage = static_cast<CachedImage*>(toStyleImage->data());
RefPtr<CSSImageValue> fromImageValue = CSSImageValue::create(fromCachedImage->url(), fromStyleImage);
RefPtr<CSSImageValue> toImageValue = CSSImageValue::create(toCachedImage->url(), toStyleImage);
RefPtr<CSSCrossfadeValue> crossfadeValue = CSSCrossfadeValue::create(fromImageValue, toImageValue);
crossfadeValue->setPercentage(CSSPrimitiveValue::create(progress, CSSPrimitiveValue::CSS_NUMBER));
return StyleGeneratedImage::create(crossfadeValue.get());
}
static inline PassRefPtr<StyleImage> blendFunc(const AnimationBase* anim, StyleImage* from, StyleImage* to, double progress)
{
if (!from || !to)
return to;
if (from->isCachedImage() && to->isCachedImage())
return crossfadeBlend(anim, static_cast<StyleCachedImage*>(from), static_cast<StyleCachedImage*>(to), progress);
// FIXME: Support transitioning generated images as well. (gradients, etc.)
return to;
}
static inline NinePieceImage blendFunc(const AnimationBase* anim, const NinePieceImage& from, const NinePieceImage& to, double progress)
{
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 (from.image()->imageSize(anim->renderer(), 1.0) != to.image()->imageSize(anim->renderer(), 1.0))
return to;
RefPtr<StyleImage> newContentImage = blendFunc(anim, from.image(), to.image(), progress);
return NinePieceImage(newContentImage, from.imageSlices(), from.fill(), from.borderSlices(), from.outset(), from.horizontalRule(), from.verticalRule());
}
class AnimationPropertyWrapperBase {
WTF_MAKE_NONCOPYABLE(AnimationPropertyWrapperBase);
WTF_MAKE_FAST_ALLOCATED;
public:
AnimationPropertyWrapperBase(CSSPropertyID prop)
: m_prop(prop)
{
}
virtual ~AnimationPropertyWrapperBase() { }
virtual bool isShorthandWrapper() const { return false; }
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const = 0;
virtual void blend(const AnimationBase*, RenderStyle*, const RenderStyle*, const RenderStyle*, double) const = 0;
CSSPropertyID property() const { return m_prop; }
#if USE(ACCELERATED_COMPOSITING)
virtual bool animationIsAccelerated() const { return false; }
#endif
private:
CSSPropertyID m_prop;
};
static int gPropertyWrapperMap[numCSSProperties];
static const int cInvalidPropertyWrapperIndex = -1;
static Vector<AnimationPropertyWrapperBase*>* gPropertyWrappers = 0;
static void addPropertyWrapper(CSSPropertyID propertyID, AnimationPropertyWrapperBase* wrapper)
{
int propIndex = propertyID - firstCSSProperty;
ASSERT(gPropertyWrapperMap[propIndex] == cInvalidPropertyWrapperIndex);
unsigned wrapperIndex = gPropertyWrappers->size();
gPropertyWrappers->append(wrapper);
gPropertyWrapperMap[propIndex] = wrapperIndex;
}
static AnimationPropertyWrapperBase* wrapperForProperty(CSSPropertyID propertyID)
{
int propIndex = propertyID - firstCSSProperty;
if (propIndex >= 0 && propIndex < numCSSProperties) {
int wrapperIndex = gPropertyWrapperMap[propIndex];
if (wrapperIndex >= 0)
return (*gPropertyWrappers)[wrapperIndex];
}
return 0;
}
template <typename T>
class PropertyWrapperGetter : public AnimationPropertyWrapperBase {
public:
PropertyWrapperGetter(CSSPropertyID prop, T (RenderStyle::*getter)() const)
: AnimationPropertyWrapperBase(prop)
, m_getter(getter)
{
}
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const
{
// If the style pointers are the same, don't bother doing the test.
// If either is null, return false. If both are null, return true.
if ((!a && !b) || a == b)
return true;
if (!a || !b)
return false;
return (a->*m_getter)() == (b->*m_getter)();
}
protected:
T (RenderStyle::*m_getter)() const;
};
template <typename T>
class PropertyWrapper : public PropertyWrapperGetter<T> {
public:
PropertyWrapper(CSSPropertyID prop, T (RenderStyle::*getter)() const, void (RenderStyle::*setter)(T))
: PropertyWrapperGetter<T>(prop, getter)
, m_setter(setter)
{
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
(dst->*m_setter)(blendFunc(anim, (a->*PropertyWrapperGetter<T>::m_getter)(), (b->*PropertyWrapperGetter<T>::m_getter)(), progress));
}
protected:
void (RenderStyle::*m_setter)(T);
};
template <typename T>
class RefCountedPropertyWrapper : public PropertyWrapperGetter<T*> {
public:
RefCountedPropertyWrapper(CSSPropertyID prop, T* (RenderStyle::*getter)() const, void (RenderStyle::*setter)(PassRefPtr<T>))
: PropertyWrapperGetter<T*>(prop, getter)
, m_setter(setter)
{
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
(dst->*m_setter)(blendFunc(anim, (a->*PropertyWrapperGetter<T*>::m_getter)(), (b->*PropertyWrapperGetter<T*>::m_getter)(), progress));
}
protected:
void (RenderStyle::*m_setter)(PassRefPtr<T>);
};
class StyleImagePropertyWrapper : public RefCountedPropertyWrapper<StyleImage> {
public:
StyleImagePropertyWrapper(CSSPropertyID prop, StyleImage* (RenderStyle::*getter)() const, void (RenderStyle::*setter)(PassRefPtr<StyleImage>))
: RefCountedPropertyWrapper<StyleImage>(prop, getter, setter)
{
}
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const
{
// If the style pointers are the same, don't bother doing the test.
// If either is null, return false. If both are null, return true.
if (a == b)
return true;
if (!a || !b)
return false;
StyleImage* imageA = (a->*m_getter)();
StyleImage* imageB = (b->*m_getter)();
return StyleImage::imagesEquivalent(imageA, imageB);
}
};
class PropertyWrapperColor : public PropertyWrapperGetter<Color> {
public:
PropertyWrapperColor(CSSPropertyID prop, Color (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const Color&))
: PropertyWrapperGetter<Color>(prop, getter)
, m_setter(setter)
{
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
(dst->*m_setter)(blendFunc(anim, (a->*PropertyWrapperGetter<Color>::m_getter)(), (b->*PropertyWrapperGetter<Color>::m_getter)(), progress));
}
protected:
void (RenderStyle::*m_setter)(const Color&);
};
#if USE(ACCELERATED_COMPOSITING)
class PropertyWrapperAcceleratedOpacity : public PropertyWrapper<float> {
public:
PropertyWrapperAcceleratedOpacity()
: PropertyWrapper<float>(CSSPropertyOpacity, &RenderStyle::opacity, &RenderStyle::setOpacity)
{
}
virtual bool animationIsAccelerated() const { return true; }
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
float fromOpacity = a->opacity();
// This makes sure we put the object being animated into a RenderLayer during the animation
dst->setOpacity(blendFunc(anim, (fromOpacity == 1) ? 0.999999f : fromOpacity, b->opacity(), progress));
}
};
class PropertyWrapperAcceleratedTransform : public PropertyWrapper<const TransformOperations&> {
public:
PropertyWrapperAcceleratedTransform()
: PropertyWrapper<const TransformOperations&>(CSSPropertyWebkitTransform, &RenderStyle::transform, &RenderStyle::setTransform)
{
}
virtual bool animationIsAccelerated() const { return true; }
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
dst->setTransform(blendFunc(anim, a->transform(), b->transform(), progress));
}
};
#if ENABLE(CSS_FILTERS)
class PropertyWrapperAcceleratedFilter : public PropertyWrapper<const FilterOperations&> {
public:
PropertyWrapperAcceleratedFilter()
: PropertyWrapper<const FilterOperations&>(CSSPropertyWebkitFilter, &RenderStyle::filter, &RenderStyle::setFilter)
{
}
virtual bool animationIsAccelerated() const { return true; }
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
dst->setFilter(blendFunc(anim, a->filter(), b->filter(), progress));
}
};
#endif
#endif // USE(ACCELERATED_COMPOSITING)
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)
{
DEFINE_STATIC_LOCAL(ShadowData, defaultShadowData, (IntPoint(), 0, 0, Normal, false, Color::transparent));
DEFINE_STATIC_LOCAL(ShadowData, defaultInsetShadowData, (IntPoint(), 0, 0, Inset, false, Color::transparent));
DEFINE_STATIC_LOCAL(ShadowData, defaultWebKitBoxShadowData, (IntPoint(), 0, 0, Normal, true, Color::transparent));
DEFINE_STATIC_LOCAL(ShadowData, defaultInsetWebKitBoxShadowData, (IntPoint(), 0, 0, Inset, true, Color::transparent));
if (srcShadow)
return srcShadow;
if (otherShadow->style() == Inset)
return otherShadow->isWebkitBoxShadow() ? &defaultInsetWebKitBoxShadowData : &defaultInsetShadowData;
return otherShadow->isWebkitBoxShadow() ? &defaultWebKitBoxShadowData : &defaultShadowData;
}
class PropertyWrapperShadow : public AnimationPropertyWrapperBase {
public:
PropertyWrapperShadow(CSSPropertyID prop, const ShadowData* (RenderStyle::*getter)() const, void (RenderStyle::*setter)(PassOwnPtr<ShadowData>, bool))
: AnimationPropertyWrapperBase(prop)
, m_getter(getter)
, m_setter(setter)
{
}
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const
{
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;
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
const ShadowData* shadowA = (a->*m_getter)();
const ShadowData* shadowB = (b->*m_getter)();
int fromLength = shadowListLength(shadowA);
int toLength = shadowListLength(shadowB);
if (fromLength == toLength || (fromLength <= 1 && toLength <= 1)) {
(dst->*m_setter)(blendSimpleOrMatchedShadowLists(anim, progress, shadowA, shadowB), false);
return;
}
(dst->*m_setter)(blendMismatchedShadowLists(anim, progress, shadowA, shadowB, fromLength, toLength), false);
}
private:
PassOwnPtr<ShadowData*> blendSimpleOrMatchedShadowLists(const AnimationBase* anim, double progress, const ShadowData* shadowA, const ShadowData* shadowB) const
{
OwnPtr<ShadowData> newShadowData;
ShadowData* lastShadow = 0;
while (shadowA || shadowB) {
const ShadowData* srcShadow = shadowForBlending(shadowA, shadowB);
const ShadowData* dstShadow = shadowForBlending(shadowB, shadowA);
OwnPtr<ShadowData> blendedShadow = blendFunc(anim, srcShadow, dstShadow, progress);
ShadowData* blendedShadowPtr = blendedShadow.get();
if (!lastShadow)
newShadowData = blendedShadow.release();
else
lastShadow->setNext(blendedShadow.release());
lastShadow = blendedShadowPtr;
shadowA = shadowA ? shadowA->next() : 0;
shadowB = shadowB ? shadowB->next() : 0;
}
return newShadowData.release();
}
PassOwnPtr<ShadowData*> blendMismatchedShadowLists(const AnimationBase* anim, double progress, const ShadowData* shadowA, const ShadowData* shadowB, int fromLength, int toLength) const
{
// 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();
}
OwnPtr<ShadowData> newShadowData;
int maxLength = 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);
OwnPtr<ShadowData> blendedShadow = blendFunc(anim, srcShadow, dstShadow, progress);
// Insert at the start of the list to preserve the order.
blendedShadow->setNext(newShadowData.release());
newShadowData = blendedShadow.release();
}
return newShadowData.release();
}
const ShadowData* (RenderStyle::*m_getter)() const;
void (RenderStyle::*m_setter)(PassOwnPtr<ShadowData>, bool);
};
class PropertyWrapperMaybeInvalidColor : public AnimationPropertyWrapperBase {
public:
PropertyWrapperMaybeInvalidColor(CSSPropertyID prop, Color (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const Color&))
: AnimationPropertyWrapperBase(prop)
, m_getter(getter)
, m_setter(setter)
{
}
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const
{
Color fromColor = (a->*m_getter)();
Color toColor = (b->*m_getter)();
if (!fromColor.isValid() && !toColor.isValid())
return true;
if (!fromColor.isValid())
fromColor = a->color();
if (!toColor.isValid())
toColor = b->color();
return fromColor == toColor;
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
Color fromColor = (a->*m_getter)();
Color toColor = (b->*m_getter)();
if (!fromColor.isValid() && !toColor.isValid())
return;
if (!fromColor.isValid())
fromColor = a->color();
if (!toColor.isValid())
toColor = b->color();
(dst->*m_setter)(blendFunc(anim, fromColor, toColor, progress));
}
private:
Color (RenderStyle::*m_getter)() const;
void (RenderStyle::*m_setter)(const Color&);
};
enum MaybeInvalidColorTag { MaybeInvalidColor };
class PropertyWrapperVisitedAffectedColor : public AnimationPropertyWrapperBase {
public:
PropertyWrapperVisitedAffectedColor(CSSPropertyID prop, Color (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const Color&),
Color (RenderStyle::*visitedGetter)() const, void (RenderStyle::*visitedSetter)(const Color&))
: AnimationPropertyWrapperBase(prop)
, m_wrapper(adoptPtr(new PropertyWrapperColor(prop, getter, setter)))
, m_visitedWrapper(adoptPtr(new PropertyWrapperColor(prop, visitedGetter, visitedSetter)))
{
}
PropertyWrapperVisitedAffectedColor(CSSPropertyID prop, MaybeInvalidColorTag, Color (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const Color&),
Color (RenderStyle::*visitedGetter)() const, void (RenderStyle::*visitedSetter)(const Color&))
: AnimationPropertyWrapperBase(prop)
, m_wrapper(adoptPtr(new PropertyWrapperMaybeInvalidColor(prop, getter, setter)))
, m_visitedWrapper(adoptPtr(new PropertyWrapperMaybeInvalidColor(prop, visitedGetter, visitedSetter)))
{
}
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const
{
return m_wrapper->equals(a, b) && m_visitedWrapper->equals(a, b);
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
m_wrapper->blend(anim, dst, a, b, progress);
m_visitedWrapper->blend(anim, dst, a, b, progress);
}
private:
OwnPtr<AnimationPropertyWrapperBase> m_wrapper;
OwnPtr<AnimationPropertyWrapperBase> m_visitedWrapper;
};
// Wrapper base class for an animatable property in a FillLayer
class FillLayerAnimationPropertyWrapperBase {
public:
FillLayerAnimationPropertyWrapperBase()
{
}
virtual ~FillLayerAnimationPropertyWrapperBase() { }
virtual bool equals(const FillLayer*, const FillLayer*) const = 0;
virtual void blend(const AnimationBase*, FillLayer*, const FillLayer*, const FillLayer*, double) const = 0;
};
template <typename T>
class FillLayerPropertyWrapperGetter : public FillLayerAnimationPropertyWrapperBase {
WTF_MAKE_NONCOPYABLE(FillLayerPropertyWrapperGetter);
public:
FillLayerPropertyWrapperGetter(T (FillLayer::*getter)() const)
: m_getter(getter)
{
}
virtual bool equals(const FillLayer* a, const FillLayer* b) const
{
// If the style pointers are the same, don't bother doing the test.
// If either is null, return false. If both are null, return true.
if ((!a && !b) || a == b)
return true;
if (!a || !b)
return false;
return (a->*m_getter)() == (b->*m_getter)();
}
protected:
T (FillLayer::*m_getter)() const;
};
template <typename T>
class FillLayerPropertyWrapper : public FillLayerPropertyWrapperGetter<T> {
public:
FillLayerPropertyWrapper(T (FillLayer::*getter)() const, void (FillLayer::*setter)(T))
: FillLayerPropertyWrapperGetter<T>(getter)
, m_setter(setter)
{
}
virtual void blend(const AnimationBase* anim, FillLayer* dst, const FillLayer* a, const FillLayer* b, double progress) const
{
(dst->*m_setter)(blendFunc(anim, (a->*FillLayerPropertyWrapperGetter<T>::m_getter)(), (b->*FillLayerPropertyWrapperGetter<T>::m_getter)(), progress));
}
protected:
void (FillLayer::*m_setter)(T);
};
template <typename T>
class FillLayerRefCountedPropertyWrapper : public FillLayerPropertyWrapperGetter<T*> {
public:
FillLayerRefCountedPropertyWrapper(T* (FillLayer::*getter)() const, void (FillLayer::*setter)(PassRefPtr<T>))
: FillLayerPropertyWrapperGetter<T*>(getter)
, m_setter(setter)
{
}
virtual void blend(const AnimationBase* anim, FillLayer* dst, const FillLayer* a, const FillLayer* b, double progress) const
{
(dst->*m_setter)(blendFunc(anim, (a->*FillLayerPropertyWrapperGetter<T*>::m_getter)(), (b->*FillLayerPropertyWrapperGetter<T*>::m_getter)(), progress));
}
protected:
void (FillLayer::*m_setter)(PassRefPtr<T>);
};
class FillLayerStyleImagePropertyWrapper : public FillLayerRefCountedPropertyWrapper<StyleImage> {
public:
FillLayerStyleImagePropertyWrapper(StyleImage* (FillLayer::*getter)() const, void (FillLayer::*setter)(PassRefPtr<StyleImage>))
: FillLayerRefCountedPropertyWrapper<StyleImage>(getter, setter)
{
}
virtual bool equals(const FillLayer* a, const FillLayer* b) const
{
// If the style pointers are the same, don't bother doing the test.
// If either is null, return false. If both are null, return true.
if (a == b)
return true;
if (!a || !b)
return false;
StyleImage* imageA = (a->*m_getter)();
StyleImage* imageB = (b->*m_getter)();
return StyleImage::imagesEquivalent(imageA, imageB);
}
};
class FillLayersPropertyWrapper : public AnimationPropertyWrapperBase {
public:
typedef const FillLayer* (RenderStyle::*LayersGetter)() const;
typedef FillLayer* (RenderStyle::*LayersAccessor)();
FillLayersPropertyWrapper(CSSPropertyID prop, LayersGetter getter, LayersAccessor accessor)
: AnimationPropertyWrapperBase(prop)
, m_layersGetter(getter)
, m_layersAccessor(accessor)
{
switch (prop) {
case CSSPropertyBackgroundPositionX:
case CSSPropertyWebkitMaskPositionX:
m_fillLayerPropertyWrapper = new FillLayerPropertyWrapper<Length>(&FillLayer::xPosition, &FillLayer::setXPosition);
break;
case CSSPropertyBackgroundPositionY:
case CSSPropertyWebkitMaskPositionY:
m_fillLayerPropertyWrapper = new FillLayerPropertyWrapper<Length>(&FillLayer::yPosition, &FillLayer::setYPosition);
break;
case CSSPropertyBackgroundSize:
case CSSPropertyWebkitBackgroundSize:
case CSSPropertyWebkitMaskSize:
m_fillLayerPropertyWrapper = new FillLayerPropertyWrapper<LengthSize>(&FillLayer::sizeLength, &FillLayer::setSizeLength);
break;
case CSSPropertyBackgroundImage:
m_fillLayerPropertyWrapper = new FillLayerStyleImagePropertyWrapper(&FillLayer::image, &FillLayer::setImage);
break;
default:
break;
}
}
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const
{
const FillLayer* fromLayer = (a->*m_layersGetter)();
const FillLayer* toLayer = (b->*m_layersGetter)();
while (fromLayer && toLayer) {
if (!m_fillLayerPropertyWrapper->equals(fromLayer, toLayer))
return false;
fromLayer = fromLayer->next();
toLayer = toLayer->next();
}
return true;
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
const FillLayer* aLayer = (a->*m_layersGetter)();
const FillLayer* bLayer = (b->*m_layersGetter)();
FillLayer* dstLayer = (dst->*m_layersAccessor)();
while (aLayer && bLayer && dstLayer) {
m_fillLayerPropertyWrapper->blend(anim, dstLayer, aLayer, bLayer, progress);
aLayer = aLayer->next();
bLayer = bLayer->next();
dstLayer = dstLayer->next();
}
}
private:
FillLayerAnimationPropertyWrapperBase* m_fillLayerPropertyWrapper;
LayersGetter m_layersGetter;
LayersAccessor m_layersAccessor;
};
class ShorthandPropertyWrapper : public AnimationPropertyWrapperBase {
public:
ShorthandPropertyWrapper(CSSPropertyID property, const StylePropertyShorthand& shorthand)
: AnimationPropertyWrapperBase(property)
{
for (unsigned i = 0; i < shorthand.length(); ++i) {
AnimationPropertyWrapperBase* wrapper = wrapperForProperty(shorthand.properties()[i]);
if (wrapper)
m_propertyWrappers.append(wrapper);
}
}
virtual bool isShorthandWrapper() const { return true; }
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const
{
Vector<AnimationPropertyWrapperBase*>::const_iterator end = m_propertyWrappers.end();
for (Vector<AnimationPropertyWrapperBase*>::const_iterator it = m_propertyWrappers.begin(); it != end; ++it) {
if (!(*it)->equals(a, b))
return false;
}
return true;
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
Vector<AnimationPropertyWrapperBase*>::const_iterator end = m_propertyWrappers.end();
for (Vector<AnimationPropertyWrapperBase*>::const_iterator it = m_propertyWrappers.begin(); it != end; ++it)
(*it)->blend(anim, dst, a, b, progress);
}
const Vector<AnimationPropertyWrapperBase*> propertyWrappers() const { return m_propertyWrappers; }
private:
Vector<AnimationPropertyWrapperBase*> m_propertyWrappers;
};
class PropertyWrapperFlex : public AnimationPropertyWrapperBase {
public:
PropertyWrapperFlex() : AnimationPropertyWrapperBase(CSSPropertyWebkitFlex)
{
}
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const
{
// If the style pointers are the same, don't bother doing the test.
// If either is null, return false. If both are null, return true.
if ((!a && !b) || a == b)
return true;
if (!a || !b)
return false;
return a->flexBasis() == b->flexBasis() && a->flexGrow() == b->flexGrow() && a->flexShrink() == b->flexShrink();
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
dst->setFlexBasis(blendFunc(anim, a->flexBasis(), b->flexBasis(), progress));
dst->setFlexGrow(blendFunc(anim, a->flexGrow(), b->flexGrow(), progress));
dst->setFlexShrink(blendFunc(anim, a->flexShrink(), b->flexShrink(), progress));
}
};
#if ENABLE(SVG)
class PropertyWrapperSVGPaint : public AnimationPropertyWrapperBase {
public:
PropertyWrapperSVGPaint(CSSPropertyID prop, const SVGPaint::SVGPaintType& (RenderStyle::*paintTypeGetter)() const, Color (RenderStyle::*getter)() const, void (RenderStyle::*setter)(const Color&))
: AnimationPropertyWrapperBase(prop)
, m_paintTypeGetter(paintTypeGetter)
, m_getter(getter)
, m_setter(setter)
{
}
virtual bool equals(const RenderStyle* a, const RenderStyle* b) const
{
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)() == SVGPaint::SVG_PAINTTYPE_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;
}
virtual void blend(const AnimationBase* anim, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress) const
{
if ((a->*m_paintTypeGetter)() != SVGPaint::SVG_PAINTTYPE_RGBCOLOR
|| (b->*m_paintTypeGetter)() != SVGPaint::SVG_PAINTTYPE_RGBCOLOR)
return;
Color fromColor = (a->*m_getter)();
Color toColor = (b->*m_getter)();
if (!fromColor.isValid() && !toColor.isValid())
return;
if (!fromColor.isValid())
fromColor = Color();
if (!toColor.isValid())
toColor = Color();
(dst->*m_setter)(blendFunc(anim, fromColor, toColor, progress));
}
private:
const SVGPaint::SVGPaintType& (RenderStyle::*m_paintTypeGetter)() const;
Color (RenderStyle::*m_getter)() const;
void (RenderStyle::*m_setter)(const Color&);
};
#endif
static void addShorthandProperties()
{
static const CSSPropertyID animatableShorthandProperties[] = {
CSSPropertyBackground, // for background-color, background-position, background-image
CSSPropertyBackgroundPosition,
CSSPropertyFont, // for font-size, font-weight
CSSPropertyWebkitMask, // for mask-position
CSSPropertyWebkitMaskPosition,
CSSPropertyBorderTop, CSSPropertyBorderRight, CSSPropertyBorderBottom, CSSPropertyBorderLeft,