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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 "SkLayerInfo.h" | 8 #include "SkLayerInfo.h" |
9 #include "SkRecordDraw.h" | 9 #include "SkRecordDraw.h" |
10 #include "SkPatchUtils.h" | 10 #include "SkPatchUtils.h" |
11 | 11 |
12 void SkRecordDraw(const SkRecord& record, | 12 void SkRecordDraw(const SkRecord& record, |
13 SkCanvas* canvas, | 13 SkCanvas* canvas, |
14 SkPicture const* const drawablePicts[], int drawableCount, | 14 SkPicture const* const drawablePicts[], int drawableCount, |
15 const SkBBoxHierarchy* bbh, | 15 const SkBBoxHierarchy* bbh, |
16 SkDrawPictureCallback* callback) { | 16 SkDrawPictureCallback* callback) { |
17 SkAutoCanvasRestore saveRestore(canvas, true /*save now, restore at exit*/); | 17 SkAutoCanvasRestore saveRestore(canvas, true /*save now, restore at exit*/); |
18 | 18 |
19 if (bbh) { | 19 if (bbh) { |
20 // Draw only ops that affect pixels in the canvas's current clip. | 20 // Draw only ops that affect pixels in the canvas's current clip. |
21 // The SkRecord and BBH were recorded in identity space. This canvas | 21 // The SkRecord and BBH were recorded in identity space. This canvas |
22 // is not necessarily in that same space. getClipBounds() returns us | 22 // is not necessarily in that same space. getClipBounds() returns us |
23 // this canvas' clip bounds transformed back into identity space, which | 23 // this canvas' clip bounds transformed back into identity space, which |
24 // lets us query the BBH. | 24 // lets us query the BBH. |
25 SkRect query = { 0, 0, 0, 0 }; | 25 SkRect query; |
26 (void)canvas->getClipBounds(&query); | 26 if (!canvas->getClipBounds(&query)) { |
| 27 // We want to make sure our query rectangle is never totally empty. |
| 28 // Clear ignores the clip, so it must draw even if the clip is logic
ally empty. |
| 29 query = SkRect::MakeWH(SK_ScalarNearlyZero, SK_ScalarNearlyZero); |
| 30 } |
27 | 31 |
28 SkTDArray<unsigned> ops; | 32 SkTDArray<unsigned> ops; |
29 bbh->search(query, &ops); | 33 bbh->search(query, &ops); |
30 | 34 |
31 SkRecords::Draw draw(canvas, drawablePicts, drawableCount); | 35 SkRecords::Draw draw(canvas, drawablePicts, drawableCount); |
32 for (int i = 0; i < ops.count(); i++) { | 36 for (int i = 0; i < ops.count(); i++) { |
33 if (callback && callback->abortDrawing()) { | 37 if (callback && callback->abortDrawing()) { |
34 return; | 38 return; |
35 } | 39 } |
36 // This visit call uses the SkRecords::Draw::operator() to call | 40 // This visit call uses the SkRecords::Draw::operator() to call |
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754 SkRecords::CollectLayers visitor(cullRect, record, data); | 758 SkRecords::CollectLayers visitor(cullRect, record, data); |
755 | 759 |
756 for (unsigned curOp = 0; curOp < record.count(); curOp++) { | 760 for (unsigned curOp = 0; curOp < record.count(); curOp++) { |
757 visitor.setCurrentOp(curOp); | 761 visitor.setCurrentOp(curOp); |
758 record.visit<void>(curOp, visitor); | 762 record.visit<void>(curOp, visitor); |
759 } | 763 } |
760 | 764 |
761 visitor.cleanUp(bbh); | 765 visitor.cleanUp(bbh); |
762 } | 766 } |
763 | 767 |
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