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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: 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 "SkPDFCanon.h"
9 #include "SkPDFFont.h"
10 #include "SkPDFGraphicState.h"
11 #include "SkPDFShader.h"
12
13 ////////////////////////////////////////////////////////////////////////////////
14
15 SK_DECLARE_STATIC_MUTEX(gSkPDFCanonFontMutex);
16 SK_DECLARE_STATIC_MUTEX(gSkPDFCanonShaderMutex);
17 SK_DECLARE_STATIC_MUTEX(gSkPDFCanonPaintMutex);
18
19 SkBaseMutex& SkPDFCanon::GetFontMutex() {
20 return gSkPDFCanonFontMutex;
21 }
22 SkBaseMutex& SkPDFCanon::GetShaderMutex() {
23 return gSkPDFCanonShaderMutex;
24 }
25 SkBaseMutex& SkPDFCanon::GetPaintMutex() {
26 return gSkPDFCanonPaintMutex;
27 }
28
29 SkPDFCanon* SkPDFCanon::Create() {
30 return new SkPDFCanon;
31 }
32 void SkPDFCanon::Destroy(SkPDFCanon* ptr) {
33 delete ptr;
34 }
35 SkPDFCanon::~SkPDFCanon() {
36 }
37 SK_DECLARE_STATIC_LAZY_PTR(SkPDFCanon,
38 singleton,
39 SkPDFCanon::Create,
40 SkPDFCanon::Destroy);
41
42 SkPDFCanon& SkPDFCanon::GetCanon() {
43 return *singleton.get();
44 }
45
46 static void assert_mutex_held(SkBaseMutex* mutex) {
47 SkDEBUGCODE(if (mutex) { mutex->assertHeld(); })
48 }
49
50 SkPDFCanon::SkPDFCanon()
51 : fFontMutex(&gSkPDFCanonFontMutex)
52 , fShaderMutex(&gSkPDFCanonShaderMutex)
53 , fPaintMutex(&gSkPDFCanonPaintMutex) {
54 }
55
56 ////////////////////////////////////////////////////////////////////////////////
57
58 SkPDFFont* SkPDFCanon::findFont(uint32_t fontID,
59 uint16_t glyphID,
60 SkPDFFont** relatedFontPtr) const {
61 assert_mutex_held(fFontMutex);
62 SkASSERT(relatedFontPtr);
63
64 SkPDFFont* relatedFont = NULL;
65 for (int i = 0; i < fFontRecords.count(); ++i) {
66 SkPDFFont::Match match = SkPDFFont::IsMatch(
67 fFontRecords[i].fFont, fFontRecords[i].fFontID,
mtklein 2015/01/20 21:59:51 Might put all these arguments one per line, or at
hal.canary 2015/01/21 17:07:50 Done.
68 fFontRecords[i].fGlyphID, fontID, glyphID);
69 if (SkPDFFont::kExact_Match == match) {
70 return fFontRecords[i].fFont;
71 } else if (!relatedFont && SkPDFFont::kRelated_Match == match) {
72 relatedFont = fFontRecords[i].fFont;
73 }
74 }
75 *relatedFontPtr = relatedFont; // May still be NULL.
76 return NULL;
77 }
78
79 void SkPDFCanon::addFont(SkPDFFont* font, uint32_t fontID, uint16_t fGlyphID) {
80 assert_mutex_held(fFontMutex);
81 SkPDFCanon::FontRec* rec = fFontRecords.push();
82 rec->fFont = font;
83 rec->fFontID = fontID;
84 rec->fGlyphID = fGlyphID;
85 }
86
87 void SkPDFCanon::removeFont(SkPDFFont* pdfFont) {
88 assert_mutex_held(fFontMutex);
89 for (int i = 0; i < fFontRecords.count(); i++) {
90 if (fFontRecords[i].fFont == pdfFont) {
91 fFontRecords.removeShuffle(i);
92 return;
93 }
94 }
95 }
96
97 ////////////////////////////////////////////////////////////////////////////////
98
99 SkPDFShader* SkPDFCanon::findShader(const SkPDFShaderState& state) const {
100 assert_mutex_held(fShaderMutex);
101 for (int i = 0; i < fShaderRecords.count(); ++i) {
102 if (fShaderRecords[i]->equals(state)) {
103 return fShaderRecords[i];
104 }
105 }
106 return NULL;
107 }
108
109 void SkPDFCanon::addShader(SkPDFShader* shader) {
110 assert_mutex_held(fShaderMutex);
111 SkASSERT(shader);
112 fShaderRecords.push(shader);
113 }
114
115 void SkPDFCanon::removeShader(SkPDFShader* pdfShader) {
116 assert_mutex_held(fShaderMutex);
117 for (int i = 0; i < fShaderRecords.count(); ++i) {
118 if (fShaderRecords[i] == pdfShader) {
119 fShaderRecords.removeShuffle(i);
120 return;
121 }
122 }
123 SkDEBUGFAIL("pdfShader not found");
124 }
125
126 ////////////////////////////////////////////////////////////////////////////////
127
128 SkPDFGraphicState* SkPDFCanon::findGraphicState(const SkPaint& paint) const {
129 assert_mutex_held(fPaintMutex);
130 for (int i = 0; i < fGraphicStateRecords.count(); ++i) {
131 if (fGraphicStateRecords[i]->equals(paint)) {
132 return fGraphicStateRecords[i];
133 }
134 }
135 return NULL;
136 }
137
138 void SkPDFCanon::addGraphicState(SkPDFGraphicState* state) {
139 assert_mutex_held(fPaintMutex);
140 SkASSERT(state);
141 fGraphicStateRecords.push(state);
142 }
143
144 void SkPDFCanon::removeGraphicState(SkPDFGraphicState* pdfGraphicState) {
145 assert_mutex_held(fPaintMutex);
146 for (int i = 0; i < fGraphicStateRecords.count(); ++i) {
147 if (fGraphicStateRecords[i] == pdfGraphicState) {
148 fGraphicStateRecords.removeShuffle(i);
149 return;
150 }
151 }
152 SkDEBUGFAIL("pdfGraphicState not found");
153 }
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