1 /* 2 * Copyright 2011, The Android Open Source Project 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef TilePainter_h 27 #define TilePainter_h 28 29 #include "TransformationMatrix.h" 30 #include "SkRefCnt.h" 31 32 class SkCanvas; 33 34 namespace WebCore { 35 36 class Color; 37 class Tile; 38 39 class TilePainter : public SkRefCnt { 40 // TODO: investigate webkit threadsafe ref counting 41 public: 42 virtual ~TilePainter() { } 43 virtual bool paint(SkCanvas* canvas) = 0; 44 virtual float opacity() { return 1.0; } 45 enum SurfaceType { Painted, Image }; 46 virtual SurfaceType type() { return Painted; } 47 virtual Color* background() { return 0; } 48 virtual bool blitFromContents(Tile* tile) { return false; } 49 50 unsigned int getUpdateCount() { return m_updateCount; } 51 void setUpdateCount(unsigned int updateCount) { m_updateCount = updateCount; } 52 53 private: 54 unsigned int m_updateCount; 55 }; 56 57 } 58 59 #endif // TilePainter_h 60
