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/*
* Copyright (C) 2008 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 "Image.h"
#include "IntSize.h"
#include "IntSizeHash.h"
#include "PlatformString.h"
#include "RenderObject.h"
#include "StyleGeneratedImage.h"
namespace WebCore {
CSSImageGeneratorValue::CSSImageGeneratorValue()
: m_accessedImage(false)
{
}
CSSImageGeneratorValue::~CSSImageGeneratorValue()
{
}
void CSSImageGeneratorValue::addClient(RenderObject* renderer, const IntSize& size)
{
ref();
if (!size.isEmpty())
m_sizes.add(size);
m_clients.add(renderer, size);
}
void CSSImageGeneratorValue::removeClient(RenderObject* renderer)
{
IntSize size = m_clients.get(renderer);
if (!size.isEmpty()) {
m_sizes.remove(size);
if (!m_sizes.contains(size))
m_images.remove(size);
}
m_clients.remove(renderer);
deref();
}
Image* CSSImageGeneratorValue::getImage(RenderObject* renderer, const IntSize& size)
{
IntSize oldSize = m_clients.get(renderer);
if (oldSize != size) {
removeClient(renderer);
addClient(renderer, size);
}
// Don't generate an image for empty sizes.
if (size.isEmpty())
return 0;
// Look up the image in our cache.
return m_images.get(size).get();
}
void CSSImageGeneratorValue::putImage(const IntSize& size, PassRefPtr<Image> image)
{
m_images.add(size, image);
}
StyleGeneratedImage* CSSImageGeneratorValue::generatedImage()
{
if (!m_accessedImage) {
m_accessedImage = true;
m_image = StyleGeneratedImage::create(this, isFixedSize());
}
return m_image.get();
}
} // namespace WebCore
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