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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/AnimatableImage.h"
#include "core/css/CSSImageValue.h"
#include "core/rendering/style/StyleGeneratedImage.h"
#include "wtf/MathExtras.h"
namespace WebCore {
PassRefPtr<AnimatableValue> AnimatableImage::interpolateTo(const AnimatableValue* value, double fraction) const
{
if (fraction <= 0 || fraction >= 1)
return defaultInterpolateTo(this, value, fraction);
RefPtr<CSSValue> fromValue = this->toCSSValue();
// FIXME: Once cross-fade works on generated image types, remove this check.
if (fromValue->isImageGeneratorValue())
return defaultInterpolateTo(this, value, fraction);
if (!fromValue->isImageValue() && !fromValue->isImageGeneratorValue()) {
if (!m_image->isImageResource())
return defaultInterpolateTo(this, value, fraction);
ImageResource* resource = static_cast<ImageResource*>(m_image->data());
fromValue = CSSImageValue::create(resource->url(), m_image.get());
}
const AnimatableImage* image = toAnimatableImage(value);
RefPtr<CSSValue> toValue = image->toCSSValue();
// FIXME: Once cross-fade works on generated image types, remove this check.
if (toValue->isImageGeneratorValue())
return defaultInterpolateTo(this, value, fraction);
if (!toValue->isImageValue() && !toValue->isImageGeneratorValue()) {
if (!image->m_image->isImageResource())
return defaultInterpolateTo(this, value, fraction);
ImageResource* resource = static_cast<ImageResource*>(image->m_image->data());
toValue = CSSImageValue::create(resource->url(), image->m_image.get());
}
RefPtr<CSSCrossfadeValue> crossfadeValue = CSSCrossfadeValue::create(fromValue, toValue);
crossfadeValue->setPercentage(CSSPrimitiveValue::create(fraction, CSSPrimitiveValue::CSS_NUMBER));
return create(StyleGeneratedImage::create(crossfadeValue.get()).get());
}
PassRefPtr<AnimatableValue> AnimatableImage::addWith(const AnimatableValue* value) const
{
// FIXME: Correct procedure is defined here: http://dev.w3.org/fxtf/web-animations/#the--image--type
return defaultAddWith(this, value);
}
bool AnimatableImage::equalTo(const AnimatableValue* value) const
{
return StyleImage::imagesEquivalent(m_image.get(), toAnimatableImage(value)->m_image.get());
}
}
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