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| 1 /* libs/graphics/sgl/SkRasterizer.cpp | |
| 2 ** | |
| 3 ** Copyright 2006, The Android Open Source Project | |
| 4 ** | |
| 5 ** Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 ** you may not use this file except in compliance with the License. | |
| 7 ** You may obtain a copy of the License at | |
| 8 ** | |
| 9 ** http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 ** | |
| 11 ** Unless required by applicable law or agreed to in writing, software | |
| 12 ** distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 ** See the License for the specific language governing permissions and | |
| 15 ** limitations under the License. | |
| 16 */ | |
| 17 | |
| 18 #include "SkRasterizer.h" | |
| 19 #include "SkDraw.h" | |
| 20 #include "SkMaskFilter.h" | |
| 21 #include "SkPath.h" | |
| 22 | |
| 23 // do nothing for now, since we don't store anything at flatten time | |
| 24 SkRasterizer::SkRasterizer(SkFlattenableReadBuffer&) {} | |
| 25 | |
| 26 bool SkRasterizer::rasterize(const SkPath& fillPath, const SkMatrix& matrix, | |
| 27 const SkIRect* clipBounds, SkMaskFilter* filter, | |
| 28 SkMask* mask, SkMask::CreateMode mode) | |
| 29 { | |
| 30 SkIRect storage; | |
| 31 | |
| 32 if (clipBounds && filter && SkMask::kJustRenderImage_CreateMode != mode) | |
| 33 { | |
| 34 SkIPoint margin; | |
| 35 SkMask srcM, dstM; | |
| 36 | |
| 37 srcM.fFormat = SkMask::kA8_Format; | |
| 38 srcM.fBounds.set(0, 0, 1, 1); | |
| 39 srcM.fImage = NULL; | |
| 40 if (!filter->filterMask(&dstM, srcM, matrix, &margin)) | |
| 41 return false; | |
| 42 | |
| 43 storage = *clipBounds; | |
| 44 storage.inset(-margin.fX, -margin.fY); | |
| 45 clipBounds = &storage; | |
| 46 } | |
| 47 | |
| 48 return this->onRasterize(fillPath, matrix, clipBounds, mask, mode); | |
| 49 } | |
| 50 | |
| 51 /* Our default implementation of the virtual method just scan converts | |
| 52 */ | |
| 53 bool SkRasterizer::onRasterize(const SkPath& fillPath, const SkMatrix& matrix, | |
| 54 const SkIRect* clipBounds, | |
| 55 SkMask* mask, SkMask::CreateMode mode) | |
| 56 { | |
| 57 SkPath devPath; | |
| 58 | |
| 59 fillPath.transform(matrix, &devPath); | |
| 60 return SkDraw::DrawToMask(devPath, clipBounds, NULL, NULL, mask, mode); | |
| 61 } | |
| 62 | |
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