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Side by Side Diff: src/pdf/SkPDFCanon.cpp

Issue 842253003: SkPDFCanon (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: react to comments Created 5 years, 11 months ago
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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 "SkLazyPtr.h"
9 #include "SkPDFCanon.h"
10 #include "SkPDFFont.h"
11 #include "SkPDFGraphicState.h"
12 #include "SkPDFShader.h"
13
14 ////////////////////////////////////////////////////////////////////////////////
15
16 SK_DECLARE_STATIC_MUTEX(gSkPDFCanonFontMutex);
17 SK_DECLARE_STATIC_MUTEX(gSkPDFCanonShaderMutex);
18 SK_DECLARE_STATIC_MUTEX(gSkPDFCanonPaintMutex);
19
20 SkBaseMutex& SkPDFCanon::GetFontMutex() { return gSkPDFCanonFontMutex; }
21 SkBaseMutex& SkPDFCanon::GetShaderMutex() { return gSkPDFCanonShaderMutex; }
22 SkBaseMutex& SkPDFCanon::GetPaintMutex() { return gSkPDFCanonPaintMutex; }
23
24 SkPDFCanon::SkPDFCanon() {}
25
26 SkPDFCanon::~SkPDFCanon() {}
27
28 SK_DECLARE_STATIC_LAZY_PTR(SkPDFCanon, singleton);
29
30 SkPDFCanon& SkPDFCanon::GetCanon() { return *singleton.get(); }
31
32 ////////////////////////////////////////////////////////////////////////////////
33
34 static void assert_mutex_held(const SkPDFCanon* canon, SkBaseMutex& mutex) {
35 if (canon == singleton.get()) {
36 mutex.assertHeld();
37 }
38 }
39
40 SkPDFFont* SkPDFCanon::findFont(uint32_t fontID,
41 uint16_t glyphID,
42 SkPDFFont** relatedFontPtr) const {
43 assert_mutex_held(this, gSkPDFCanonFontMutex);
44 SkASSERT(relatedFontPtr);
45
46 SkPDFFont* relatedFont = NULL;
47 for (int i = 0; i < fFontRecords.count(); ++i) {
48 SkPDFFont::Match match = SkPDFFont::IsMatch(
49 fFontRecords[i].fFont, fFontRecords[i].fFontID,
50 fFontRecords[i].fGlyphID, fontID, glyphID);
51 if (SkPDFFont::kExact_Match == match) {
52 return fFontRecords[i].fFont;
53 } else if (!relatedFont && SkPDFFont::kRelated_Match == match) {
54 relatedFont = fFontRecords[i].fFont;
55 }
56 }
57 *relatedFontPtr = relatedFont; // May still be NULL.
58 return NULL;
59 }
60
61 void SkPDFCanon::addFont(SkPDFFont* font, uint32_t fontID, uint16_t fGlyphID) {
62 assert_mutex_held(this, gSkPDFCanonFontMutex);
63 SkPDFCanon::FontRec* rec = fFontRecords.push();
64 rec->fFont = font;
65 rec->fFontID = fontID;
66 rec->fGlyphID = fGlyphID;
67 }
68
69 void SkPDFCanon::removeFont(SkPDFFont* pdfFont) {
70 assert_mutex_held(this, gSkPDFCanonFontMutex);
71 for (int i = 0; i < fFontRecords.count(); i++) {
72 if (fFontRecords[i].fFont == pdfFont) {
73 fFontRecords.removeShuffle(i);
74 return;
75 }
76 }
77 }
78
79 ////////////////////////////////////////////////////////////////////////////////
80
81 SkPDFShader* SkPDFCanon::findShader(const SkPDFShader::State& state) const {
82 assert_mutex_held(this, gSkPDFCanonShaderMutex);
83 for (int i = 0; i < fShaderRecords.count(); ++i) {
84 if (fShaderRecords[i]->equals(state)) {
85 return fShaderRecords[i];
86 }
87 }
88 return NULL;
89 }
90
91 void SkPDFCanon::addShader(SkPDFShader* shader) {
92 assert_mutex_held(this, gSkPDFCanonShaderMutex);
93 SkASSERT(shader);
94 fShaderRecords.push(shader);
95 }
96
97 void SkPDFCanon::removeShader(SkPDFShader* pdfShader) {
98 assert_mutex_held(this, gSkPDFCanonShaderMutex);
99 for (int i = 0; i < fShaderRecords.count(); ++i) {
100 if (fShaderRecords[i] == pdfShader) {
101 fShaderRecords.removeShuffle(i);
102 return;
103 }
104 }
105 SkDEBUGFAIL("pdfShader not found");
mtklein 2015/01/21 17:24:38 leftover, or something we should add to removeFont
hal.canary 2015/01/21 17:45:30 I noted the reason why it was left out as a commen
106 }
107
108 ////////////////////////////////////////////////////////////////////////////////
109
110 SkPDFGraphicState* SkPDFCanon::findGraphicState(const SkPaint& paint) const {
111 assert_mutex_held(this, gSkPDFCanonPaintMutex);
112 for (int i = 0; i < fGraphicStateRecords.count(); ++i) {
113 if (fGraphicStateRecords[i]->equals(paint)) {
114 return fGraphicStateRecords[i];
115 }
116 }
117 return NULL;
118 }
119
120 void SkPDFCanon::addGraphicState(SkPDFGraphicState* state) {
121 assert_mutex_held(this, gSkPDFCanonPaintMutex);
122 SkASSERT(state);
123 fGraphicStateRecords.push(state);
124 }
125
126 void SkPDFCanon::removeGraphicState(SkPDFGraphicState* pdfGraphicState) {
127 assert_mutex_held(this, gSkPDFCanonPaintMutex);
128 for (int i = 0; i < fGraphicStateRecords.count(); ++i) {
129 if (fGraphicStateRecords[i] == pdfGraphicState) {
130 fGraphicStateRecords.removeShuffle(i);
131 return;
132 }
133 }
134 SkDEBUGFAIL("pdfGraphicState not found");
135 }
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