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 "SkMaskFilter.h"
11 : #include "SkBlitter.h"
12 : #include "SkBounder.h"
13 : #include "SkBuffer.h"
14 : #include "SkDraw.h"
15 : #include "SkRasterClip.h"
16 :
17 0 : bool SkMaskFilter::filterMask(SkMask*, const SkMask&, const SkMatrix&,
18 : SkIPoint*) {
19 0 : return false;
20 : }
21 :
22 0 : bool SkMaskFilter::filterPath(const SkPath& devPath, const SkMatrix& matrix,
23 : const SkRasterClip& clip, SkBounder* bounder,
24 : SkBlitter* blitter) {
25 : SkMask srcM, dstM;
26 :
27 0 : if (!SkDraw::DrawToMask(devPath, &clip.getBounds(), this, &matrix, &srcM,
28 0 : SkMask::kComputeBoundsAndRenderImage_CreateMode)) {
29 0 : return false;
30 : }
31 0 : SkAutoMaskFreeImage autoSrc(srcM.fImage);
32 :
33 0 : if (!this->filterMask(&dstM, srcM, matrix, NULL)) {
34 0 : return false;
35 : }
36 0 : SkAutoMaskFreeImage autoDst(dstM.fImage);
37 :
38 : // if we get here, we need to (possibly) resolve the clip and blitter
39 0 : SkAAClipBlitterWrapper wrapper(clip, blitter);
40 0 : blitter = wrapper.getBlitter();
41 :
42 0 : SkRegion::Cliperator clipper(wrapper.getRgn(), dstM.fBounds);
43 :
44 0 : if (!clipper.done() && (bounder == NULL || bounder->doIRect(dstM.fBounds))) {
45 0 : const SkIRect& cr = clipper.rect();
46 0 : do {
47 0 : blitter->blitMask(dstM, cr);
48 0 : clipper.next();
49 0 : } while (!clipper.done());
50 : }
51 :
52 0 : return true;
53 : }
54 :
55 0 : SkMaskFilter::BlurType SkMaskFilter::asABlur(BlurInfo*) const {
56 0 : return kNone_BlurType;
57 : }
58 :
59 :
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