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| 1 /* | |
| 2 * Copyright 2012 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 SkTileGrid_DEFINED | |
| 9 #define SkTileGrid_DEFINED | |
| 10 | |
| 11 #include "SkBBHFactory.h" | |
| 12 #include "SkBBoxHierarchy.h" | |
| 13 | |
| 14 /** | |
| 15 * Subclass of SkBBoxHierarchy that stores elements in buckets that correspond | |
| 16 * to tile regions, disposed in a regular grid. This is useful when the tile | |
| 17 * structure that will be use in search() calls is known prior to insertion. | |
| 18 */ | |
| 19 class SkTileGrid : public SkBBoxHierarchy { | |
| 20 public: | |
| 21 SkTileGrid(int xTiles, int yTiles, const SkTileGridFactory::TileGridInfo& in
fo); | |
| 22 virtual ~SkTileGrid(); | |
| 23 | |
| 24 virtual void insert(SkAutoTMalloc<SkRect>* boundsArray, int N) SK_OVERRIDE; | |
| 25 virtual void search(const SkRect& query, SkTDArray<unsigned>* results) const
SK_OVERRIDE; | |
| 26 | |
| 27 // For testing. | |
| 28 int tileCount(int x, int y) { return fTiles[y * fXTiles + x].count(); } | |
| 29 | |
| 30 virtual size_t bytesUsed() const SK_OVERRIDE; | |
| 31 | |
| 32 private: | |
| 33 void reserve(int); | |
| 34 void shrinkToFit(); | |
| 35 | |
| 36 void commonAdjust(SkRect*) const; | |
| 37 void userToGrid(const SkRect&, SkIRect* grid) const; | |
| 38 | |
| 39 const int fXTiles, fYTiles; | |
| 40 const SkScalar fInvWidth, fInvHeight; | |
| 41 const SkScalar fMarginWidth, fMarginHeight; | |
| 42 const SkPoint fOffset; | |
| 43 const SkRect fGridBounds; | |
| 44 | |
| 45 // (fXTiles * fYTiles) SkTDArrays, each listing ops overlapping that tile in
order. | |
| 46 SkTDArray<unsigned>* fTiles; | |
| 47 | |
| 48 typedef SkBBoxHierarchy INHERITED; | |
| 49 }; | |
| 50 | |
| 51 #endif | |
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Chromium Code Reviews
Issue 845623002:
Remove SkTileGrid (except for TileGridInfo). (Closed)
Base URL: https://skia.googlesource.com/skia.git@master