1 /* 2 * Copyright 2014 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkReadPixelsRec_DEFINED 9 #define SkReadPixelsRec_DEFINED 10 11 #include "SkImageInfo.h" 12 13 /** 14 * Helper class to package and trim the parameters passed to readPixels() 15 */ 16 struct SkReadPixelsRec { SkReadPixelsRecSkReadPixelsRec17 SkReadPixelsRec(const SkImageInfo& info, void* pixels, size_t rowBytes, int x, int y) 18 : fPixels(pixels) 19 , fRowBytes(rowBytes) 20 , fInfo(info) 21 , fX(x) 22 , fY(y) 23 {} 24 SkReadPixelsRecSkReadPixelsRec25 SkReadPixelsRec(const SkPixmap& pm, int x, int y) 26 : fPixels(pm.writable_addr()) 27 , fRowBytes(pm.rowBytes()) 28 , fInfo(pm.info()) 29 , fX(x) 30 , fY(y) 31 {} 32 33 void* fPixels; 34 size_t fRowBytes; 35 SkImageInfo fInfo; 36 int fX; 37 int fY; 38 39 /* 40 * On true, may have modified its fields (except fRowBytes) to make it a legal subset 41 * of the specified src width/height. 42 * 43 * On false, leaves self unchanged, but indicates that it does not overlap src, or 44 * is not valid (e.g. bad fInfo) for readPixels(). 45 */ 46 bool trim(int srcWidth, int srcHeight); 47 }; 48 49 #endif 50