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/*
* Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2007 Alp Toker <alp@atoker.com>
*
* 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 HTMLCanvasElement_h
#define HTMLCanvasElement_h
#include "HTMLElement.h"
#include "IntSize.h"
#if PLATFORM(CG)
// FIXME: CG-specific parts need to move to the platform directory.
typedef struct CGContext* CGContextRef;
typedef struct CGImage* CGImageRef;
#elif PLATFORM(QT)
class QPixmap;
class QPainter;
#elif PLATFORM(CAIRO)
typedef struct _cairo_surface cairo_surface_t;
#endif
namespace WebCore {
class CanvasRenderingContext2D;
typedef CanvasRenderingContext2D CanvasRenderingContext;
class FloatPoint;
class FloatRect;
class FloatSize;
class GraphicsContext;
class ImageBuffer;
class IntPoint;
class InttRect;
class IntSize;
class HTMLCanvasElement : public HTMLElement {
public:
HTMLCanvasElement(Document*);
virtual ~HTMLCanvasElement();
virtual HTMLTagStatus endTagRequirement() const;
virtual int tagPriority() const;
int width() const { return m_size.width(); }
int height() const { return m_size.height(); }
void setWidth(int);
void setHeight(int);
CanvasRenderingContext* getContext(const String&);
// FIXME: Web Applications 1.0 describes a toDataURL function.
virtual void parseMappedAttribute(MappedAttribute*);
virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
IntSize size() const { return m_size; }
void willDraw(const FloatRect&);
void paint(GraphicsContext*, const IntRect&);
GraphicsContext* drawingContext() const;
ImageBuffer* buffer() const;
#if PLATFORM(CG)
CGImageRef createPlatformImage() const;
#elif PLATFORM(QT)
QPixmap createPlatformImage() const;
#elif PLATFORM(CAIRO)
cairo_surface_t* createPlatformImage() const;
#endif
IntRect convertLogicalToDevice(const FloatRect&) const;
IntSize convertLogicalToDevice(const FloatSize&) const;
IntPoint convertLogicalToDevice(const FloatPoint&) const;
static const float MaxCanvasArea;
private:
void createImageBuffer() const;
void reset();
bool m_rendererIsCanvas;
RefPtr<CanvasRenderingContext2D> m_2DContext;
IntSize m_size;
// FIXME: Web Applications 1.0 describes a security feature where we track
// if we ever drew any images outside the domain, so we can disable toDataURL.
// m_createdImageBuffer means we tried to malloc the buffer. We didn't necessarily get it.
mutable bool m_createdImageBuffer;
mutable OwnPtr<ImageBuffer> m_imageBuffer;
};
} //namespace
#endif
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