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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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