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| 1 /* | 1 /* |
| 2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "SkTileGrid.h" | 8 #include "SkTileGrid.h" |
| 9 | 9 |
| 10 SkTileGrid::SkTileGrid(int xTiles, int yTiles, const SkTileGridFactory::TileGrid
Info& info) | 10 SkTileGrid::SkTileGrid(int xTiles, int yTiles, const SkTileGridFactory::TileGrid
Info& info) |
| 11 : fXTiles(xTiles) | 11 : fXTiles(xTiles) |
| 12 , fYTiles(yTiles) | 12 , fYTiles(yTiles) |
| 13 , fInfo(info) | 13 , fInfo(info) |
| 14 , fCount(0) | 14 , fCount(0) |
| 15 , fTiles(SkNEW_ARRAY(SkTDArray<Entry>, xTiles * yTiles)) { | 15 , fTiles(SkNEW_ARRAY(SkTDArray<Entry>, xTiles * yTiles)) { |
| 16 // Margin is offset by 1 as a provision for AA and | 16 // Margin is offset by 1 as a provision for AA and |
| 17 // to cancel-out the outset applied by getClipDeviceBounds. | 17 // to cancel-out the outset applied by getClipDeviceBounds. |
| 18 fInfo.fMargin.fHeight++; | 18 fInfo.fMargin.fHeight++; |
| 19 fInfo.fMargin.fWidth++; | 19 fInfo.fMargin.fWidth++; |
| 20 } | 20 } |
| 21 | 21 |
| 22 SkTileGrid::~SkTileGrid() { | 22 SkTileGrid::~SkTileGrid() { |
| 23 SkDELETE_ARRAY(fTiles); | 23 SkDELETE_ARRAY(fTiles); |
| 24 } | 24 } |
| 25 | 25 |
| 26 void SkTileGrid::insert(void* data, const SkIRect& bounds, bool) { | 26 void SkTileGrid::insert(void* data, const SkRect& fbounds, bool) { |
| 27 SkASSERT(!bounds.isEmpty()); | 27 SkASSERT(!fbounds.isEmpty()); |
| 28 SkIRect dilatedBounds = bounds; | 28 SkIRect dilatedBounds; |
| 29 | 29 if (fbounds.isLargest()) { |
| 30 // Dilating the largest SkIRect will overflow. Other nearly-largest rects m
ay overflow too, | 30 // Dilating the largest SkIRect will overflow. Other nearly-largest rec
ts may overflow too, |
| 31 // but we don't make active use of them like we do the largest. | 31 // but we don't make active use of them like we do the largest. |
| 32 if (!bounds.isLargest()) { | 32 dilatedBounds.setLargest(); |
| 33 } else { |
| 34 fbounds.roundOut(&dilatedBounds); |
| 33 dilatedBounds.outset(fInfo.fMargin.width(), fInfo.fMargin.height()); | 35 dilatedBounds.outset(fInfo.fMargin.width(), fInfo.fMargin.height()); |
| 34 dilatedBounds.offset(fInfo.fOffset); | 36 dilatedBounds.offset(fInfo.fOffset); |
| 35 } | 37 } |
| 36 | 38 |
| 37 const SkIRect gridBounds = | 39 const SkIRect gridBounds = |
| 38 { 0, 0, fInfo.fTileInterval.width() * fXTiles, fInfo.fTileInterval.heigh
t() * fYTiles }; | 40 { 0, 0, fInfo.fTileInterval.width() * fXTiles, fInfo.fTileInterval.heigh
t() * fYTiles }; |
| 39 if (!SkIRect::Intersects(dilatedBounds, gridBounds)) { | 41 if (!SkIRect::Intersects(dilatedBounds, gridBounds)) { |
| 40 return; | 42 return; |
| 41 } | 43 } |
| 42 | 44 |
| (...skipping 17 matching lines...) Expand all Loading... |
| 60 static int divide_ceil(int x, int y) { | 62 static int divide_ceil(int x, int y) { |
| 61 return (x + y - 1) / y; | 63 return (x + y - 1) / y; |
| 62 } | 64 } |
| 63 | 65 |
| 64 // Number of tiles for which data is allocated on the stack in | 66 // Number of tiles for which data is allocated on the stack in |
| 65 // SkTileGrid::search. If malloc becomes a bottleneck, we may consider | 67 // SkTileGrid::search. If malloc becomes a bottleneck, we may consider |
| 66 // increasing this number. Typical large web page, say 2k x 16k, would | 68 // increasing this number. Typical large web page, say 2k x 16k, would |
| 67 // require 512 tiles of size 256 x 256 pixels. | 69 // require 512 tiles of size 256 x 256 pixels. |
| 68 static const int kStackAllocationTileCount = 1024; | 70 static const int kStackAllocationTileCount = 1024; |
| 69 | 71 |
| 70 void SkTileGrid::search(const SkIRect& query, SkTDArray<void*>* results) const { | 72 void SkTileGrid::search(const SkRect& query, SkTDArray<void*>* results) const { |
| 71 SkIRect adjusted = query; | 73 SkIRect adjusted; |
| 74 query.roundOut(&adjusted); |
| 72 | 75 |
| 73 // The inset is to counteract the outset that was applied in 'insert' | 76 // The inset is to counteract the outset that was applied in 'insert' |
| 74 // The outset/inset is to optimize for lookups of size | 77 // The outset/inset is to optimize for lookups of size |
| 75 // 'tileInterval + 2 * margin' that are aligned with the tile grid. | 78 // 'tileInterval + 2 * margin' that are aligned with the tile grid. |
| 76 adjusted.inset(fInfo.fMargin.width(), fInfo.fMargin.height()); | 79 adjusted.inset(fInfo.fMargin.width(), fInfo.fMargin.height()); |
| 77 adjusted.offset(fInfo.fOffset); | 80 adjusted.offset(fInfo.fOffset); |
| 78 adjusted.sort(); // in case the inset inverted the rectangle | 81 adjusted.sort(); // in case the inset inverted the rectangle |
| 79 | 82 |
| 80 // Convert the query rectangle from device coordinates to tile coordinates | 83 // Convert the query rectangle from device coordinates to tile coordinates |
| 81 // by rounding outwards to the nearest tile boundary so that the resulting t
ile | 84 // by rounding outwards to the nearest tile boundary so that the resulting t
ile |
| (...skipping 75 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 157 } | 160 } |
| 158 | 161 |
| 159 void SkTileGrid::rewindInserts() { | 162 void SkTileGrid::rewindInserts() { |
| 160 SkASSERT(fClient); | 163 SkASSERT(fClient); |
| 161 for (int i = 0; i < fXTiles * fYTiles; i++) { | 164 for (int i = 0; i < fXTiles * fYTiles; i++) { |
| 162 while (!fTiles[i].isEmpty() && fClient->shouldRewind(fTiles[i].top().dat
a)) { | 165 while (!fTiles[i].isEmpty() && fClient->shouldRewind(fTiles[i].top().dat
a)) { |
| 163 fTiles[i].pop(); | 166 fTiles[i].pop(); |
| 164 } | 167 } |
| 165 } | 168 } |
| 166 } | 169 } |
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