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/*
* Copyright (C) 2008, 2012 Apple Computer, 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.
*/
#ifndef GeneratorGeneratedImage_h
#define GeneratorGeneratedImage_h
#include "GeneratedImage.h"
#include "Generator.h"
#include "Image.h"
#include "ImageBuffer.h"
#include "IntSize.h"
#include "Timer.h"
#include <wtf/RefPtr.h>
namespace WebCore {
static const int generatedImageCacheClearDelay = 1;
class GeneratedImageCacheTimer;
class GeneratorGeneratedImage : public GeneratedImage {
friend class GeneratedImageCacheTimer;
public:
static PassRefPtr<GeneratorGeneratedImage> create(PassRefPtr<Generator> generator, const IntSize& size)
{
return adoptRef(new GeneratorGeneratedImage(generator, size));
}
virtual ~GeneratorGeneratedImage()
{
m_cacheTimer.stop();
}
protected:
virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator);
virtual void drawPattern(GraphicsContext*, const FloatRect& srcRect, const AffineTransform& patternTransform,
const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator, const FloatRect& destRect);
GeneratorGeneratedImage(PassRefPtr<Generator> generator, const IntSize& size)
: m_generator(generator)
, m_cacheTimer(this)
{
m_size = size;
}
class GeneratedImageCacheTimer : public TimerBase {
public:
GeneratedImageCacheTimer(GeneratorGeneratedImage * parent)
: m_shouldRestartWhenTimerFires(false)
, m_parent(parent) { }
void restart()
{
if (isActive()) {
m_shouldRestartWhenTimerFires = true;
return;
}
startOneShot(generatedImageCacheClearDelay);
};
private:
virtual void fired() OVERRIDE
{
if (m_shouldRestartWhenTimerFires) {
m_shouldRestartWhenTimerFires = false;
startOneShot(generatedImageCacheClearDelay);
return;
}
if (m_parent) {
m_parent->m_cachedImageBuffer.clear();
m_parent->m_cachedAdjustedSize = IntSize();
}
};
bool m_shouldRestartWhenTimerFires;
GeneratorGeneratedImage* m_parent;
};
RefPtr<Generator> m_generator;
OwnPtr<ImageBuffer> m_cachedImageBuffer;
GeneratedImageCacheTimer m_cacheTimer;
IntSize m_cachedAdjustedSize;
unsigned m_cachedGeneratorHash;
};
}
#endif
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