1
2 /*
3 * Copyright 2006 The Android Open Source Project
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10 #include "SkRasterizer.h"
11 #include "SkDraw.h"
12 #include "SkMaskFilter.h"
13 #include "SkPath.h"
14
15 // do nothing for now, since we don't store anything at flatten time
SkRasterizer(SkFlattenableReadBuffer &)16 SkRasterizer::SkRasterizer(SkFlattenableReadBuffer&) {}
17
rasterize(const SkPath & fillPath,const SkMatrix & matrix,const SkIRect * clipBounds,SkMaskFilter * filter,SkMask * mask,SkMask::CreateMode mode)18 bool SkRasterizer::rasterize(const SkPath& fillPath, const SkMatrix& matrix,
19 const SkIRect* clipBounds, SkMaskFilter* filter,
20 SkMask* mask, SkMask::CreateMode mode) {
21 SkIRect storage;
22
23 if (clipBounds && filter && SkMask::kJustRenderImage_CreateMode != mode) {
24 SkIPoint margin;
25 SkMask srcM, dstM;
26
27 srcM.fFormat = SkMask::kA8_Format;
28 srcM.fBounds.set(0, 0, 1, 1);
29 srcM.fImage = NULL;
30 if (!filter->filterMask(&dstM, srcM, matrix, &margin)) {
31 return false;
32 }
33 storage = *clipBounds;
34 storage.inset(-margin.fX, -margin.fY);
35 clipBounds = &storage;
36 }
37
38 return this->onRasterize(fillPath, matrix, clipBounds, mask, mode);
39 }
40
41 /* Our default implementation of the virtual method just scan converts
42 */
onRasterize(const SkPath & fillPath,const SkMatrix & matrix,const SkIRect * clipBounds,SkMask * mask,SkMask::CreateMode mode)43 bool SkRasterizer::onRasterize(const SkPath& fillPath, const SkMatrix& matrix,
44 const SkIRect* clipBounds,
45 SkMask* mask, SkMask::CreateMode mode) {
46 SkPath devPath;
47
48 fillPath.transform(matrix, &devPath);
49 return SkDraw::DrawToMask(devPath, clipBounds, NULL, NULL, mask, mode);
50 }
51
52