1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef SKIA_EXT_VECTOR_CANVAS_H_ 6 #define SKIA_EXT_VECTOR_CANVAS_H_ 7 8 #include "base/compiler_specific.h" 9 #include "skia/ext/platform_canvas.h" 10 11 class SkDevice; 12 13 namespace skia { 14 15 // This class is a specialization of the regular PlatformCanvas. It is designed 16 // to work with a VectorDevice to manage platform-specific drawing. It allows 17 // using both Skia operations and platform-specific operations. It *doesn't* 18 // support reading back from the bitmap backstore since it is not used. 19 class SK_API VectorCanvas : public PlatformCanvas { 20 public: 21 // Ownership of |device| is transfered to VectorCanvas. 22 explicit VectorCanvas(SkDevice* device); 23 virtual ~VectorCanvas(); 24 25 virtual SkBounder* setBounder(SkBounder* bounder) OVERRIDE; 26 virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter) OVERRIDE; 27 28 private: 29 // Returns true if the top device is vector based and not bitmap based. 30 bool IsTopDeviceVectorial() const; 31 32 // Copy & assign are not supported. 33 VectorCanvas(const VectorCanvas&); 34 const VectorCanvas& operator=(const VectorCanvas&); 35 }; 36 37 } // namespace skia 38 39 #endif // SKIA_EXT_VECTOR_CANVAS_H_ 40 41
