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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 "SkRecordDraw.h" | 8 #include "SkRecordDraw.h" |
9 | 9 |
10 namespace { | 10 void SkRecordDraw(const SkRecord& record, SkCanvas* canvas) { |
| 11 for (SkRecords::Draw draw(canvas); draw.index() < record.count(); draw.next(
)) { |
| 12 record.visit<void>(draw.index(), draw); |
| 13 } |
| 14 } |
11 | 15 |
12 // This is an SkRecord visitor that will draw that SkRecord to an SkCanvas. | 16 namespace SkRecords { |
13 class Draw : SkNoncopyable { | |
14 public: | |
15 explicit Draw(SkCanvas* canvas) : fCanvas(canvas), fIndex(0) {} | |
16 | 17 |
17 unsigned index() const { return fIndex; } | 18 bool Draw::skip(const PairedPushCull& r) { |
18 void next() { ++fIndex; } | 19 if (fCanvas->quickReject(r.base->rect)) { |
| 20 fIndex += r.skip; |
| 21 return true; |
| 22 } |
| 23 return false; |
| 24 } |
19 | 25 |
20 template <typename T> void operator()(const T& r) { | 26 bool Draw::skip(const BoundedDrawPosTextH& r) { |
21 if (!this->skip(r)) { | 27 return fCanvas->quickRejectY(r.minY, r.maxY); |
22 this->draw(r); | 28 } |
23 } | |
24 } | |
25 | |
26 private: | |
27 // No base case, so we'll be compile-time checked that we implemented all po
ssibilities below. | |
28 template <typename T> void draw(const T&); | |
29 | |
30 // skip() should return true if we can skip this command, false if not. | |
31 // It may update fIndex directly to skip more than just this one command. | |
32 | |
33 // Mostly we just blindly call fCanvas and let it handle quick rejects itsel
f. | |
34 template <typename T> bool skip(const T&) { return false; } | |
35 | |
36 // We add our own quick rejects for commands added by optimizations. | |
37 bool skip(const SkRecords::PairedPushCull& r) { | |
38 if (fCanvas->quickReject(r.base->rect)) { | |
39 fIndex += r.skip; | |
40 return true; | |
41 } | |
42 return false; | |
43 } | |
44 bool skip(const SkRecords::BoundedDrawPosTextH& r) { | |
45 return fCanvas->quickRejectY(r.minY, r.maxY); | |
46 } | |
47 | |
48 SkCanvas* fCanvas; | |
49 unsigned fIndex; | |
50 }; | |
51 | 29 |
52 // NoOps draw nothing. | 30 // NoOps draw nothing. |
53 template <> void Draw::draw(const SkRecords::NoOp&) {} | 31 template <> void Draw::draw(const NoOp&) {} |
54 | 32 |
55 #define DRAW(T, call) template <> void Draw::draw(const SkRecords::T& r) { fCanv
as->call; } | 33 #define DRAW(T, call) template <> void Draw::draw(const T& r) { fCanvas->call; } |
56 DRAW(Restore, restore()); | 34 DRAW(Restore, restore()); |
57 DRAW(Save, save(r.flags)); | 35 DRAW(Save, save(r.flags)); |
58 DRAW(SaveLayer, saveLayer(r.bounds, r.paint, r.flags)); | 36 DRAW(SaveLayer, saveLayer(r.bounds, r.paint, r.flags)); |
59 DRAW(PopCull, popCull()); | 37 DRAW(PopCull, popCull()); |
60 DRAW(PushCull, pushCull(r.rect)); | 38 DRAW(PushCull, pushCull(r.rect)); |
61 DRAW(Clear, clear(r.color)); | 39 DRAW(Clear, clear(r.color)); |
62 DRAW(Concat, concat(r.matrix)); | 40 DRAW(Concat, concat(r.matrix)); |
63 DRAW(SetMatrix, setMatrix(r.matrix)); | 41 DRAW(SetMatrix, setMatrix(r.matrix)); |
64 | 42 |
65 DRAW(ClipPath, clipPath(r.path, r.op, r.doAA)); | 43 DRAW(ClipPath, clipPath(r.path, r.op, r.doAA)); |
(...skipping 14 matching lines...) Expand all Loading... |
80 DRAW(DrawPosTextH, drawPosTextH(r.text, r.byteLength, r.xpos, r.y, r.paint)); | 58 DRAW(DrawPosTextH, drawPosTextH(r.text, r.byteLength, r.xpos, r.y, r.paint)); |
81 DRAW(DrawRRect, drawRRect(r.rrect, r.paint)); | 59 DRAW(DrawRRect, drawRRect(r.rrect, r.paint)); |
82 DRAW(DrawRect, drawRect(r.rect, r.paint)); | 60 DRAW(DrawRect, drawRect(r.rect, r.paint)); |
83 DRAW(DrawSprite, drawSprite(r.bitmap, r.left, r.top, r.paint)); | 61 DRAW(DrawSprite, drawSprite(r.bitmap, r.left, r.top, r.paint)); |
84 DRAW(DrawText, drawText(r.text, r.byteLength, r.x, r.y, r.paint)); | 62 DRAW(DrawText, drawText(r.text, r.byteLength, r.x, r.y, r.paint)); |
85 DRAW(DrawTextOnPath, drawTextOnPath(r.text, r.byteLength, r.path, r.matrix, r.pa
int)); | 63 DRAW(DrawTextOnPath, drawTextOnPath(r.text, r.byteLength, r.path, r.matrix, r.pa
int)); |
86 DRAW(DrawVertices, drawVertices(r.vmode, r.vertexCount, r.vertices, r.texs, r.co
lors, | 64 DRAW(DrawVertices, drawVertices(r.vmode, r.vertexCount, r.vertices, r.texs, r.co
lors, |
87 r.xmode.get(), r.indices, r.indexCount, r.paint)
); | 65 r.xmode.get(), r.indices, r.indexCount, r.paint)
); |
88 #undef DRAW | 66 #undef DRAW |
89 | 67 |
90 template <> void Draw::draw(const SkRecords::PairedPushCull& r) { this->draw(*r.
base); } | 68 template <> void Draw::draw(const PairedPushCull& r) { this->draw(*r.base); } |
91 template <> void Draw::draw(const SkRecords::BoundedDrawPosTextH& r) { this->dra
w(*r.base); } | 69 template <> void Draw::draw(const BoundedDrawPosTextH& r) { this->draw(*r.base);
} |
92 | 70 |
93 } // namespace | 71 } // namespace SkRecords |
94 | |
95 void SkRecordDraw(const SkRecord& record, SkCanvas* canvas) { | |
96 for (Draw draw(canvas); draw.index() < record.count(); draw.next()) { | |
97 record.visit<void>(draw.index(), draw); | |
98 } | |
99 } | |
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