1 2 /* 3 * Copyright 2010 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 11 #ifndef GrRectanizer_DEFINED 12 #define GrRectanizer_DEFINED 13 14 #include "GrRect.h" 15 16 class GrRectanizerPurgeListener { 17 public: 18 virtual ~GrRectanizerPurgeListener() {} 19 20 virtual void notifyPurgeStrip(void*, int yCoord) = 0; 21 }; 22 23 class GrRectanizer { 24 public: 25 GrRectanizer(int width, int height) : fWidth(width), fHeight(height) { 26 GrAssert(width >= 0); 27 GrAssert(height >= 0); 28 } 29 30 virtual ~GrRectanizer() {} 31 32 int width() const { return fWidth; } 33 int height() const { return fHeight; } 34 35 virtual bool addRect(int width, int height, GrIPoint16* loc) = 0; 36 virtual float percentFull() const = 0; 37 38 // return the Y-coordinate of a strip that should be purged, given height 39 // i.e. return the oldest such strip, or some other criteria. Return -1 40 // if there is no candidate 41 virtual int stripToPurge(int height) const = 0; 42 virtual void purgeStripAtY(int yCoord) = 0; 43 44 /** 45 * Our factory, which returns the subclass du jour 46 */ 47 static GrRectanizer* Factory(int width, int height); 48 49 private: 50 int fWidth; 51 int fHeight; 52 }; 53 54 #endif 55
