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#include "GrTDArray.h" 16 17class GrRectanizerPurgeListener { 18public: 19 virtual ~GrRectanizerPurgeListener() {} 20 21 virtual void notifyPurgeStrip(void*, int yCoord) = 0; 22}; 23 24class GrRectanizer { 25public: 26 GrRectanizer(int width, int height) : fWidth(width), fHeight(height) { 27 GrAssert(width >= 0); 28 GrAssert(height >= 0); 29 } 30 31 virtual ~GrRectanizer() {} 32 33 int width() const { return fWidth; } 34 int height() const { return fHeight; } 35 36 virtual bool addRect(int width, int height, GrIPoint16* loc) = 0; 37 virtual float percentFull() const = 0; 38 39 // return the Y-coordinate of a strip that should be purged, given height 40 // i.e. return the oldest such strip, or some other criteria. Return -1 41 // if there is no candidate 42 virtual int stripToPurge(int height) const = 0; 43 virtual void purgeStripAtY(int yCoord) = 0; 44 45 /** 46 * Our factory, which returns the subclass du jour 47 */ 48 static GrRectanizer* Factory(int width, int height); 49 50private: 51 int fWidth; 52 int fHeight; 53}; 54 55#endif 56 57 58