michael@0: /*
michael@0:  * Copyright 2012 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkImage_Base_DEFINED
michael@0: #define SkImage_Base_DEFINED
michael@0: 
michael@0: #include "SkImage.h"
michael@0: 
michael@0: class SkImage_Base : public SkImage {
michael@0: public:
michael@0:     SkImage_Base(int width, int height) : INHERITED(width, height) {}
michael@0: 
michael@0:     virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*) = 0;
michael@0:     virtual void onDrawRectToRect(SkCanvas*, const SkRect* src,
michael@0:                                   const SkRect& dst, const SkPaint*) = 0;
michael@0: 
michael@0:     // Default impl calls onDraw
michael@0:     virtual bool onReadPixels(SkBitmap*, const SkIRect& subset) const;
michael@0: 
michael@0:     virtual const void* onPeekPixels(SkImageInfo*, size_t* /*rowBytes*/) const {
michael@0:         return NULL;
michael@0:     }
michael@0: 
michael@0:     virtual GrTexture* onGetTexture() { return NULL; }
michael@0: 
michael@0:     // return a read-only copy of the pixels. We promise to not modify them,
michael@0:     // but only inspect them (or encode them).
michael@0:     virtual bool getROPixels(SkBitmap*) const { return false; }
michael@0: 
michael@0: private:
michael@0:     typedef SkImage INHERITED;
michael@0: };
michael@0: 
michael@0: #endif