1 /* 2 * Copyright 2012, 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 LayerContent_h 27 #define LayerContent_h 28 29 #include "IntRect.h" 30 #include "SkRefCnt.h" 31 #include <utils/threads.h> 32 33 class SkCanvas; 34 class SkPicture; 35 class SkWStream; 36 37 namespace WebCore { 38 39 class PrerenderedInval; 40 41 class LayerContent : public SkRefCnt { 42 public: 43 virtual int width() = 0; 44 virtual int height() = 0; 45 bool isEmpty() { return !width() || !height(); } 46 virtual void setCheckForOptimisations(bool check) = 0; 47 virtual void checkForOptimisations() = 0; 48 virtual float maxZoomScale() = 0; 49 virtual void draw(SkCanvas* canvas) = 0; 50 virtual PrerenderedInval* prerenderForRect(const IntRect& dirty) { return 0; } 51 virtual void clearPrerenders() { }; 52 53 virtual void serialize(SkWStream* stream) = 0; 54 55 protected: 56 // used to prevent parallel draws, as both SkPicture and PictureSet don't support them 57 android::Mutex m_drawLock; 58 }; 59 60 } // WebCore 61 62 #endif // LayerContent_h 63
