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 GrRecordReplaceDraw_DEFINED 9 #define GrRecordReplaceDraw_DEFINED 10 11 #include "SkDrawPictureCallback.h" 12 #include "SkRect.h" 13 #include "SkTDArray.h" 14 15 class SkBBoxHierarchy; 16 class SkBitmap; 17 class SkCanvas; 18 class SkImage; 19 class SkPaint; 20 class SkRecord; 21 22 // GrReplacements collects op ranges that can be replaced with 23 // a single drawBitmap call (using a precomputed bitmap). 24 class GrReplacements { 25 public: 26 // All the operations between fStart and fStop (inclusive) will be replaced with 27 // a single drawBitmap call using fPos, fBM and fPaint. 28 struct ReplacementInfo { 29 unsigned fStart; 30 unsigned fStop; 31 SkIPoint fPos; 32 SkImage* fImage; // Owns a ref 33 const SkPaint* fPaint; // Owned by this object 34 35 SkIRect fSrcRect; 36 }; 37 38 ~GrReplacements() { this->freeAll(); } 39 40 // Add a new replacement range. The replacement ranges should be 41 // sorted in increasing order and non-overlapping (esp. no nested 42 // saveLayers). 43 ReplacementInfo* push(); 44 45 // look up a replacement range by its start offset. 46 // lastLookedUp is an in/out parameter that is used to speed up the search. 47 // It should be initialized to 0 on the first call and then passed back in 48 // unmodified on subsequent calls. 49 const ReplacementInfo* lookupByStart(size_t start, int* lastLookedUp) const; 50 51 private: 52 SkTDArray<ReplacementInfo> fReplacements; 53 54 void freeAll(); 55 56 #ifdef SK_DEBUG 57 void validate() const; 58 #endif 59 }; 60 61 // Draw an SkRecord into an SkCanvas replacing saveLayer/restore blocks with 62 // drawBitmap calls. A convenience wrapper around SkRecords::Draw. 63 void GrRecordReplaceDraw(const SkRecord&, 64 SkCanvas*, 65 const SkBBoxHierarchy*, 66 const GrReplacements*, 67 SkDrawPictureCallback*); 68 69 #endif // GrRecordReplaceDraw_DEFINED 70
