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/*
* Copyright (C) 2013 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 "core/animation/ElementAnimation.h"
#include "core/animation/DocumentTimeline.h"
#include "core/css/RuntimeCSSEnabled.h"
#include "core/css/resolver/StyleResolver.h"
#include "wtf/text/StringBuilder.h"
#include <algorithm>
namespace WebCore {
CSSPropertyID ElementAnimation::camelCaseCSSPropertyNameToID(const String& propertyName)
{
if (propertyName.find('-') != kNotFound)
return CSSPropertyInvalid;
StringBuilder builder;
size_t position = 0;
size_t end;
while ((end = propertyName.find(isASCIIUpper, position)) != kNotFound) {
builder.append(propertyName.substring(position, end - position) + "-" + toASCIILower((propertyName)[end]));
position = end + 1;
}
builder.append(propertyName.substring(position));
// Doesn't handle prefixed properties.
CSSPropertyID id = cssPropertyID(builder.toString());
return id;
}
void ElementAnimation::animate(Element* element, Vector<Dictionary> keyframeDictionaryVector, double duration)
{
ASSERT(RuntimeEnabledFeatures::webAnimationsAPIEnabled());
// FIXME: This test will not be neccessary once resolution of keyframe values occurs at
// animation application time.
if (!element->inActiveDocument())
return;
element->document().updateStyleIfNeeded();
if (!element->renderer())
return;
startAnimation(element, keyframeDictionaryVector, duration);
}
void ElementAnimation::startAnimation(Element* element, Vector<Dictionary> keyframeDictionaryVector, double duration)
{
KeyframeAnimationEffect::KeyframeVector keyframes;
Vector<RefPtr<MutableStylePropertySet> > propertySetVector;
for (size_t i = 0; i < keyframeDictionaryVector.size(); ++i) {
RefPtr<MutableStylePropertySet> propertySet = MutableStylePropertySet::create();
propertySetVector.append(propertySet);
RefPtr<Keyframe> keyframe = Keyframe::create();
keyframes.append(keyframe);
double offset;
if (keyframeDictionaryVector[i].get("offset", offset)) {
keyframe->setOffset(offset);
} else {
// FIXME: Web Animations CSS engine does not yet implement handling of
// keyframes without specified offsets. This check can be removed when
// that funcitonality is implemented.
ASSERT_NOT_REACHED();
return;
}
String compositeString;
keyframeDictionaryVector[i].get("composite", compositeString);
if (compositeString == "add")
keyframe->setComposite(AnimationEffect::CompositeAdd);
Vector<String> keyframeProperties;
keyframeDictionaryVector[i].getOwnPropertyNames(keyframeProperties);
for (size_t j = 0; j < keyframeProperties.size(); ++j) {
String property = keyframeProperties[j];
CSSPropertyID id = camelCaseCSSPropertyNameToID(property);
// FIXME: There is no way to store invalid properties or invalid values
// in a Keyframe object, so for now I just skip over them. Eventually we
// will need to support getFrames(), which should return exactly the
// keyframes that were input through the API. We will add a layer to wrap
// KeyframeAnimationEffect, store input keyframes and implement getFrames.
if (id == CSSPropertyInvalid || !CSSAnimations::isAnimatableProperty(id))
continue;
String value;
keyframeDictionaryVector[i].get(property, value);
propertySet->setProperty(id, value);
}
}
// FIXME: Replace this with code that just parses, when that code is available.
RefPtr<KeyframeAnimationEffect> effect = StyleResolver::createKeyframeAnimationEffect(*element, propertySetVector, keyframes);
// FIXME: Totally hardcoded Timing for now. Will handle timing parameters later.
Timing timing;
// FIXME: Currently there is no way to tell whether or not an iterationDuration
// has been specified (becauser the default argument is 0). So any animation
// created using Element.animate() will have a timing with hasIterationDuration()
// == true.
timing.hasIterationDuration = true;
timing.iterationDuration = std::max<double>(duration, 0);
RefPtr<Animation> animation = Animation::create(element, effect, timing);
DocumentTimeline* timeline = element->document().timeline();
ASSERT(timeline);
timeline->play(animation.get());
}
} // namespace WebCore
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