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/*
* Copyright (C) 2010 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:
* 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 CanvasSurface_h
#define CanvasSurface_h
#include "AffineTransform.h"
#include "IntSize.h"
#include <wtf/OwnPtr.h>
#include <wtf/Noncopyable.h>
namespace WebCore {
class AffineTransform;
class FloatPoint;
class FloatRect;
class FloatSize;
class GraphicsContext;
class ImageBuffer;
class IntPoint;
class String;
class CSSStyleSelector;
class RenderBox;
class RenderStyle;
class SecurityOrigin;
typedef int ExceptionCode;
class CanvasSurface : public Noncopyable {
public:
CanvasSurface(float pageScaleFactor);
virtual ~CanvasSurface();
int width() const { return m_size.width(); }
int height() const { return m_size.height(); }
String toDataURL(const String& mimeType, ExceptionCode&);
const IntSize& size() const { return m_size; }
virtual void willDraw(const FloatRect&);
GraphicsContext* drawingContext() const;
ImageBuffer* buffer() const;
IntRect convertLogicalToDevice(const FloatRect&) const;
IntSize convertLogicalToDevice(const FloatSize&) const;
IntPoint convertLogicalToDevice(const FloatPoint&) const;
void setOriginTainted() { m_originClean = false; }
bool originClean() const { return m_originClean; }
AffineTransform baseTransform() const;
const SecurityOrigin& securityOrigin() const;
RenderBox* renderBox() const;
RenderStyle* computedStyle();
CSSStyleSelector* styleSelector();
protected:
void setSurfaceSize(const IntSize&);
bool hasCreatedImageBuffer() const { return m_hasCreatedImageBuffer; }
static const int DefaultWidth;
static const int DefaultHeight;
private:
void createImageBuffer() const;
static const float MaxCanvasArea;
IntSize m_size;
float m_pageScaleFactor;
bool m_originClean;
// m_createdImageBuffer means we tried to malloc the buffer. We didn't necessarily get it.
mutable bool m_hasCreatedImageBuffer;
mutable OwnPtr<ImageBuffer> m_imageBuffer;
};
} // namespace WebCore
#endif
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