1 /* 2 * Copyright 2011 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 SkBlitMask_DEFINED 9 #define SkBlitMask_DEFINED 10 11 #include "SkColor.h" 12 #include "SkMask.h" 13 #include "SkPixmap.h" 14 15 class SkBlitMask { 16 public: 17 /** 18 * Returns true if the device config and mask format were supported. 19 * else return false (nothing was drawn) 20 */ 21 static bool BlitColor(const SkPixmap& device, const SkMask& mask, 22 const SkIRect& clip, SkColor color); 23 24 /** 25 * Function pointer that blits the mask into a device (dst) colorized 26 * by color. The number of pixels to blit is specified by width and height, 27 * but each scanline is offset by dstRB (rowbytes) and srcRB respectively. 28 */ 29 typedef void (*ColorProc)(void* dst, size_t dstRB, 30 const void* mask, size_t maskRB, 31 SkColor color, int width, int height); 32 33 /** 34 * Function pointer that blits a row of mask(lcd16) into a row of dst 35 * colorized by a single color. The number of pixels to blit is specified 36 * by width. 37 */ 38 typedef void (*BlitLCD16RowProc)(SkPMColor dst[], const uint16_t src[], 39 SkColor color, int width, 40 SkPMColor opaqueDst); 41 42 /** 43 * Function pointer that blits a row of src colors through a row of a mask 44 * onto a row of dst colors. The RowFactory that returns this function ptr 45 * will have been told the formats for the mask and the dst. 46 */ 47 typedef void (*RowProc)(SkPMColor* dst, const void* mask, 48 const SkPMColor* src, int width); 49 50 /** 51 * Public entry-point to return a blitcolor BlitLCD16RowProc. 52 */ 53 static BlitLCD16RowProc BlitLCD16RowFactory(bool isOpaque); 54 55 /** 56 * Return either platform specific optimized blitcolor BlitLCD16RowProc, 57 * or nullptr if no optimized routine is available. 58 */ 59 static BlitLCD16RowProc PlatformBlitRowProcs16(bool isOpaque); 60 61 enum RowFlags { 62 kSrcIsOpaque_RowFlag = 1 << 0 63 }; 64 65 /** 66 * Public entry-point to return a blitmask RowProc. 67 * May return nullptr if config or format are not supported. 68 */ 69 static RowProc RowFactory(SkColorType, SkMask::Format, RowFlags); 70 71 /** 72 * Return either platform specific optimized blitmask RowProc, 73 * or nullptr if no optimized routine is available. 74 */ 75 static RowProc PlatformRowProcs(SkColorType, SkMask::Format, RowFlags); 76 }; 77 78 #endif 79