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Side by Side Diff: src/core/SkRecordedDrawable.cpp

Issue 1913843002: Enable flattening of SkRecordedDrawable (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Fix backward compatibility Created 4 years, 7 months ago
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1 /*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "SkLayerInfo.h"
9 #include "SkMatrix.h"
10 #include "SkPictureData.h"
11 #include "SkPicturePlayback.h"
12 #include "SkPictureRecord.h"
13 #include "SkPictureRecorder.h"
14 #include "SkPictureUtils.h"
15 #include "SkRecordedDrawable.h"
16 #include "SkRecordDraw.h"
17
18 void SkRecordedDrawable::onDraw(SkCanvas* canvas) {
19 SkDrawable* const* drawables = nullptr;
20 int drawableCount = 0;
21 if (fDrawableList) {
22 drawables = fDrawableList->begin();
23 drawableCount = fDrawableList->count();
24 }
25 SkRecordDraw(*fRecord, canvas, nullptr, drawables, drawableCount, fBBH, null ptr/*callback*/);
26 }
27
28 SkPicture* SkRecordedDrawable::onNewPictureSnapshot() {
29 SkBigPicture::SnapshotArray* pictList = nullptr;
30 if (fDrawableList) {
31 // TODO: should we plumb-down the BBHFactory and recordFlags from our ho st
32 // PictureRecorder?
33 pictList = fDrawableList->newDrawableSnapshot();
34 }
35
36 SkAutoTUnref<SkLayerInfo> saveLayerData;
37 if (fBBH && fDoSaveLayerInfo) {
38 // TODO: can we avoid work by not allocating / filling these bounds?
39 SkAutoTMalloc<SkRect> scratchBounds(fRecord->count());
40 saveLayerData.reset(new SkLayerInfo);
41
42 SkRecordComputeLayers(fBounds, *fRecord, scratchBounds, pictList, saveLa yerData);
43 }
44
45 size_t subPictureBytes = 0;
46 for (int i = 0; pictList && i < pictList->count(); i++) {
47 subPictureBytes += SkPictureUtils::ApproximateBytesUsed(pictList->begin( )[i]);
48 }
49 // SkBigPicture will take ownership of a ref on both fRecord and fBBH.
50 // We're not willing to give up our ownership, so we must ref them for SkPic ture.
51 return new SkBigPicture(fBounds, SkRef(fRecord.get()), pictList, SkSafeRef(f BBH.get()),
52 saveLayerData.release(), subPictureBytes);
53 }
54
55 void SkRecordedDrawable::flatten(SkWriteBuffer& buffer) const {
56 // Write the bounds.
57 buffer.writeRect(fBounds);
58
59 // Create an SkPictureRecord to record the draw commands.
60 SkPictInfo info;
61 SkPictureRecord pictureRecord(SkISize::Make(fBounds.width(), fBounds.height( )), 0);
62
63 // If the query contains the whole picture, don't bother with the bounding b ox hierarchy.
64 SkRect clipBounds;
65 pictureRecord.getClipBounds(&clipBounds);
66 SkBBoxHierarchy* bbh;
67 if (clipBounds.contains(fBounds)) {
68 bbh = nullptr;
69 } else {
70 bbh = fBBH.get();
71 }
72
73 // Record the draw commands.
74 pictureRecord.beginRecording();
75 SkRecordDraw(*fRecord, &pictureRecord, nullptr, fDrawableList->begin(), fDra wableList->count(),
76 bbh, nullptr);
77 pictureRecord.endRecording();
78
79 // Flatten the recorded commands and drawables.
80 SkPictureData pictureData(pictureRecord, info, false);
81 pictureData.flatten(buffer);
82 }
83
84 sk_sp<SkFlattenable> SkRecordedDrawable::CreateProc(SkReadBuffer& buffer) {
85 // Read the bounds.
86 SkRect bounds;
87 buffer.readRect(&bounds);
88
89 // Unflatten into a SkPictureData.
90 SkPictInfo info;
91 info.fCullRect = bounds;
92 SkAutoTDelete<SkPictureData> pictureData(SkPictureData::CreateFromBuffer(buf fer, info));
93 if (!pictureData) {
94 return nullptr;
95 }
96
97 // Create a drawable.
98 SkPicturePlayback playback(pictureData);
99 SkPictureRecorder recorder;
100 playback.draw(recorder.beginRecording(bounds), nullptr, &buffer);
101 return recorder.finishRecordingAsDrawable();
102 }
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