1 files changed, 46 insertions, 0 deletions
diff --git a/skia/ext/vector_canvas.h b/skia/ext/vector_canvas.h
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+++ b/skia/ext/vector_canvas.h
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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_
+