1 /*
2 * Copyright 2015 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 "SkBBoxHierarchy.h"
9 #include "SkBigPicture.h"
10 #include "SkPictureCommon.h"
11 #include "SkRecord.h"
12 #include "SkRecordDraw.h"
13 #include "SkTraceEvent.h"
14
SkBigPicture(const SkRect & cull,SkRecord * record,SnapshotArray * drawablePicts,SkBBoxHierarchy * bbh,AccelData * accelData,size_t approxBytesUsedBySubPictures)15 SkBigPicture::SkBigPicture(const SkRect& cull,
16 SkRecord* record,
17 SnapshotArray* drawablePicts,
18 SkBBoxHierarchy* bbh,
19 AccelData* accelData,
20 size_t approxBytesUsedBySubPictures)
21 : fCullRect(cull)
22 , fApproxBytesUsedBySubPictures(approxBytesUsedBySubPictures)
23 , fRecord(record) // Take ownership of caller's ref.
24 , fDrawablePicts(drawablePicts) // Take ownership.
25 , fBBH(bbh) // Take ownership of caller's ref.
26 , fAccelData(accelData) // Take ownership of caller's ref.
27 {}
28
playback(SkCanvas * canvas,AbortCallback * callback) const29 void SkBigPicture::playback(SkCanvas* canvas, AbortCallback* callback) const {
30 SkASSERT(canvas);
31
32 // If the query contains the whole picture, don't bother with the BBH.
33 SkRect clipBounds = { 0, 0, 0, 0 };
34 (void)canvas->getClipBounds(&clipBounds);
35 const bool useBBH = !clipBounds.contains(this->cullRect());
36
37 SkRecordDraw(*fRecord,
38 canvas,
39 this->drawablePicts(),
40 nullptr,
41 this->drawableCount(),
42 useBBH ? fBBH.get() : nullptr,
43 callback);
44 }
45
partialPlayback(SkCanvas * canvas,int start,int stop,const SkMatrix & initialCTM) const46 void SkBigPicture::partialPlayback(SkCanvas* canvas,
47 int start,
48 int stop,
49 const SkMatrix& initialCTM) const {
50 SkASSERT(canvas);
51 SkRecordPartialDraw(*fRecord,
52 canvas,
53 this->drawablePicts(),
54 this->drawableCount(),
55 start,
56 stop,
57 initialCTM);
58 }
59
analysis() const60 const SkBigPicture::Analysis& SkBigPicture::analysis() const {
61 return *fAnalysis.get([&]{ return new Analysis(*fRecord); });
62 }
63
cullRect() const64 SkRect SkBigPicture::cullRect() const { return fCullRect; }
hasText() const65 bool SkBigPicture::hasText() const { return this->analysis().fHasText; }
willPlayBackBitmaps() const66 bool SkBigPicture::willPlayBackBitmaps() const { return this->analysis().fWillPlaybackBitmaps; }
numSlowPaths() const67 int SkBigPicture::numSlowPaths() const { return this->analysis().fNumSlowPathsAndDashEffects; }
approximateOpCount() const68 int SkBigPicture::approximateOpCount() const { return fRecord->count(); }
approximateBytesUsed() const69 size_t SkBigPicture::approximateBytesUsed() const {
70 size_t bytes = sizeof(*this) + fRecord->bytesUsed() + fApproxBytesUsedBySubPictures;
71 if (fBBH) { bytes += fBBH->bytesUsed(); }
72 return bytes;
73 }
74
drawableCount() const75 int SkBigPicture::drawableCount() const {
76 return fDrawablePicts ? fDrawablePicts->count() : 0;
77 }
78
drawablePicts() const79 SkPicture const* const* SkBigPicture::drawablePicts() const {
80 return fDrawablePicts ? fDrawablePicts->begin() : nullptr;
81 }
82
Analysis(const SkRecord & record)83 SkBigPicture::Analysis::Analysis(const SkRecord& record) {
84 TRACE_EVENT0("disabled-by-default-skia", "SkBigPicture::Analysis::Analysis()");
85 SkTextHunter text;
86 SkBitmapHunter bitmap;
87 SkPathCounter path;
88
89 bool hasText = false, hasBitmap = false;
90 for (int i = 0; i < record.count(); i++) {
91 hasText = hasText || record.visit<bool>(i, text);
92 hasBitmap = hasBitmap || record.visit<bool>(i, bitmap);
93 record.visit<void>(i, path);
94 }
95
96 fHasText = hasText;
97 fWillPlaybackBitmaps = hasBitmap;
98 fNumSlowPathsAndDashEffects = SkTMin<int>(path.fNumSlowPathsAndDashEffects, 255);
99 }
100