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// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SKIA_EXT_VECTOR_CANVAS_H_
#define SKIA_EXT_VECTOR_CANVAS_H_
#include "skia/ext/platform_canvas.h"
#include "skia/ext/vector_platform_device.h"
#if defined(__linux__)
typedef struct _cairo cairo_t;
#endif
namespace skia {
// This class is a specialization of the regular PlatformCanvas. It is designed
// to work with a VectorDevice to manage platform-specific drawing. It allows
// using both Skia operations and platform-specific operations. It *doesn't*
// support reading back from the bitmap backstore since it is not used.
class VectorCanvas : public PlatformCanvas {
public:
VectorCanvas();
#if defined(WIN32)
VectorCanvas(HDC dc, int width, int height);
#elif defined(__linux__)
// Caller owns |context|. Ownership is not transferred.
VectorCanvas(cairo_t* context, int width, int height);
#endif
virtual ~VectorCanvas();
// For two-part init, call if you use the no-argument constructor above
#if defined(WIN32)
bool initialize(HDC context, int width, int height);
#elif defined(__linux__)
// Ownership of |context| is not transferred.
bool initialize(cairo_t* context, int width, int height);
#endif
virtual SkBounder* setBounder(SkBounder* bounder);
#if defined(WIN32) || defined(__linux__)
virtual SkDevice* createDevice(SkBitmap::Config config,
int width, int height,
bool is_opaque, bool isForLayer);
#endif
virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter);
private:
#if defined(WIN32)
// |shared_section| is in fact the HDC used for output. |is_opaque| is unused.
virtual SkDevice* createPlatformDevice(int width, int height, bool is_opaque,
HANDLE shared_section);
#elif defined(__linux__)
// Ownership of |context| is not transferred. |is_opaque| is unused.
virtual SkDevice* createPlatformDevice(cairo_t* context,
int width, int height,
bool is_opaque);
#endif
// Returns true if the top device is vector based and not bitmap based.
bool IsTopDeviceVectorial() const;
// Copy & assign are not supported.
VectorCanvas(const VectorCanvas&);
const VectorCanvas& operator=(const VectorCanvas&);
};
} // namespace skia
#endif // SKIA_EXT_VECTOR_CANVAS_H_
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