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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 "CSSCanvasValue.h"
#include "ImageBuffer.h"
#include "RenderObject.h"
#include "WebCoreMemoryInstrumentation.h"
#include <wtf/text/StringBuilder.h>
namespace WebCore {
CSSCanvasValue::~CSSCanvasValue()
{
if (m_element)
m_element->removeObserver(&m_canvasObserver);
}
String CSSCanvasValue::customCssText() const
{
StringBuilder result;
result.appendLiteral("-webkit-canvas(");
result.append(m_name);
result.append(')');
return result.toString();
}
void CSSCanvasValue::canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect)
{
IntRect imageChangeRect = enclosingIntRect(changedRect);
RenderObjectSizeCountMap::const_iterator end = clients().end();
for (RenderObjectSizeCountMap::const_iterator curr = clients().begin(); curr != end; ++curr)
const_cast<RenderObject*>(curr->first)->imageChanged(static_cast<WrappedImagePtr>(this), &imageChangeRect);
}
void CSSCanvasValue::canvasResized(HTMLCanvasElement*)
{
RenderObjectSizeCountMap::const_iterator end = clients().end();
for (RenderObjectSizeCountMap::const_iterator curr = clients().begin(); curr != end; ++curr)
const_cast<RenderObject*>(curr->first)->imageChanged(static_cast<WrappedImagePtr>(this));
}
void CSSCanvasValue::canvasDestroyed(HTMLCanvasElement* element)
{
ASSERT_UNUSED(element, element == m_element);
m_element = 0;
}
IntSize CSSCanvasValue::fixedSize(const RenderObject* renderer)
{
if (HTMLCanvasElement* elt = element(renderer->document()))
return IntSize(elt->width(), elt->height());
return IntSize();
}
HTMLCanvasElement* CSSCanvasValue::element(Document* document)
{
if (!m_element) {
m_element = document->getCSSCanvasElement(m_name);
if (!m_element)
return 0;
m_element->addObserver(&m_canvasObserver);
}
return m_element;
}
PassRefPtr<Image> CSSCanvasValue::image(RenderObject* renderer, const IntSize& /*size*/)
{
ASSERT(clients().contains(renderer));
HTMLCanvasElement* elt = element(renderer->document());
if (!elt || !elt->buffer())
return 0;
return elt->copiedImage();
}
void CSSCanvasValue::reportDescendantMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
CSSImageGeneratorValue::reportBaseClassMemoryUsage(memoryObjectInfo);
info.addInstrumentedMember(m_name);
info.addInstrumentedMember(m_element);
}
} // namespace WebCore
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