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/*
* Copyright (C) 2008, 2011, 2012, 2013 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. 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 "CSSImageGeneratorValue.h"
#include "CSSCanvasValue.h"
#include "CSSCrossfadeValue.h"
#include "CSSGradientValue.h"
#include "Image.h"
#include "RenderObject.h"
#include <wtf/text/WTFString.h>
namespace WebCore {
static const double timeToKeepCachedGeneratedImagesInSeconds = 3;
CSSImageGeneratorValue::CSSImageGeneratorValue(ClassType classType)
: CSSValue(classType)
{
}
CSSImageGeneratorValue::~CSSImageGeneratorValue()
{
}
void CSSImageGeneratorValue::addClient(RenderObject* renderer)
{
ASSERT(renderer);
ref();
m_clients.add(renderer);
}
void CSSImageGeneratorValue::removeClient(RenderObject* renderer)
{
ASSERT(renderer);
m_clients.remove(renderer);
deref();
}
GeneratorGeneratedImage* CSSImageGeneratorValue::cachedImageForSize(IntSize size)
{
if (size.isEmpty())
return 0;
CachedGeneratedImage* cachedGeneratedImage = m_images.get(size);
if (!cachedGeneratedImage)
return 0;
cachedGeneratedImage->puntEvictionTimer();
return cachedGeneratedImage->image();
}
void CSSImageGeneratorValue::saveCachedImageForSize(IntSize size, PassRefPtr<GeneratorGeneratedImage> image)
{
ASSERT(!m_images.contains(size));
m_images.add(size, adoptPtr(new CachedGeneratedImage(*this, size, image)));
}
void CSSImageGeneratorValue::evictCachedGeneratedImage(IntSize size)
{
ASSERT(m_images.contains(size));
m_images.remove(size);
}
CSSImageGeneratorValue::CachedGeneratedImage::CachedGeneratedImage(CSSImageGeneratorValue& owner, IntSize size, PassRefPtr<GeneratorGeneratedImage> image)
: m_owner(owner)
, m_size(size)
, m_image(image)
, m_evictionTimer(this, &CSSImageGeneratorValue::CachedGeneratedImage::evictionTimerFired, timeToKeepCachedGeneratedImagesInSeconds)
{
m_evictionTimer.restart();
}
void CSSImageGeneratorValue::CachedGeneratedImage::evictionTimerFired(DeferrableOneShotTimer<CachedGeneratedImage>*)
{
// NOTE: This is essentially a "delete this", the object is no longer valid after this line.
m_owner.evictCachedGeneratedImage(m_size);
}
PassRefPtr<Image> CSSImageGeneratorValue::image(RenderObject* renderer, const IntSize& size)
{
switch (classType()) {
case CanvasClass:
return static_cast<CSSCanvasValue*>(this)->image(renderer, size);
case CrossfadeClass:
return static_cast<CSSCrossfadeValue*>(this)->image(renderer, size);
case LinearGradientClass:
return static_cast<CSSLinearGradientValue*>(this)->image(renderer, size);
case RadialGradientClass:
return static_cast<CSSRadialGradientValue*>(this)->image(renderer, size);
default:
ASSERT_NOT_REACHED();
}
return 0;
}
bool CSSImageGeneratorValue::isFixedSize() const
{
switch (classType()) {
case CanvasClass:
return static_cast<const CSSCanvasValue*>(this)->isFixedSize();
case CrossfadeClass:
return static_cast<const CSSCrossfadeValue*>(this)->isFixedSize();
case LinearGradientClass:
return static_cast<const CSSLinearGradientValue*>(this)->isFixedSize();
case RadialGradientClass:
return static_cast<const CSSRadialGradientValue*>(this)->isFixedSize();
default:
ASSERT_NOT_REACHED();
}
return false;
}
IntSize CSSImageGeneratorValue::fixedSize(const RenderObject* renderer)
{
switch (classType()) {
case CanvasClass:
return static_cast<CSSCanvasValue*>(this)->fixedSize(renderer);
case CrossfadeClass:
return static_cast<CSSCrossfadeValue*>(this)->fixedSize(renderer);
case LinearGradientClass:
return static_cast<CSSLinearGradientValue*>(this)->fixedSize(renderer);
case RadialGradientClass:
return static_cast<CSSRadialGradientValue*>(this)->fixedSize(renderer);
default:
ASSERT_NOT_REACHED();
}
return IntSize();
}
bool CSSImageGeneratorValue::isPending() const
{
switch (classType()) {
case CrossfadeClass:
return static_cast<const CSSCrossfadeValue*>(this)->isPending();
case CanvasClass:
return static_cast<const CSSCanvasValue*>(this)->isPending();
case LinearGradientClass:
return static_cast<const CSSLinearGradientValue*>(this)->isPending();
case RadialGradientClass:
return static_cast<const CSSRadialGradientValue*>(this)->isPending();
default:
ASSERT_NOT_REACHED();
}
return false;
}
bool CSSImageGeneratorValue::knownToBeOpaque(const RenderObject* renderer) const
{
switch (classType()) {
case CrossfadeClass:
return static_cast<const CSSCrossfadeValue*>(this)->knownToBeOpaque(renderer);
case CanvasClass:
return false;
case LinearGradientClass:
return static_cast<const CSSLinearGradientValue*>(this)->knownToBeOpaque(renderer);
case RadialGradientClass:
return static_cast<const CSSRadialGradientValue*>(this)->knownToBeOpaque(renderer);
default:
ASSERT_NOT_REACHED();
}
return false;
}
void CSSImageGeneratorValue::loadSubimages(CachedResourceLoader* cachedResourceLoader)
{
switch (classType()) {
case CrossfadeClass:
static_cast<CSSCrossfadeValue*>(this)->loadSubimages(cachedResourceLoader);
break;
case CanvasClass:
static_cast<CSSCanvasValue*>(this)->loadSubimages(cachedResourceLoader);
break;
case LinearGradientClass:
static_cast<CSSLinearGradientValue*>(this)->loadSubimages(cachedResourceLoader);
break;
case RadialGradientClass:
static_cast<CSSRadialGradientValue*>(this)->loadSubimages(cachedResourceLoader);
break;
default:
ASSERT_NOT_REACHED();
}
}
} // namespace WebCore
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