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// Copyright (c) 2006-2008 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 BASE_GFX_VECTOR_CANVAS_H_
#define BASE_GFX_VECTOR_CANVAS_H_
#include "base/gfx/platform_canvas_win.h"
#include "base/gfx/vector_device.h"
namespace gfx {
// 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 PlatformCanvasWin {
public:
VectorCanvas();
VectorCanvas(HDC dc, int width, int height);
virtual ~VectorCanvas();
// For two-part init, call if you use the no-argument constructor above
bool initialize(HDC context, int width, int height);
virtual SkBounder* setBounder(SkBounder*);
virtual SkDevice* createDevice(SkBitmap::Config config,
int width, int height,
bool is_opaque, bool isForLayer);
virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter);
private:
// |is_opaque| is unused. |shared_section| is in fact the HDC used for output.
virtual SkDevice* createPlatformDevice(int width, int height, bool is_opaque,
HANDLE shared_section);
// Returns true if the top device is vector based and not bitmap based.
bool IsTopDeviceVectorial() const;
DISALLOW_COPY_AND_ASSIGN(VectorCanvas);
};
} // namespace gfx
#endif // BASE_GFX_VECTOR_CANVAS_H_
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