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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 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 #ifndef SkPDFCanon_DEFINED | 7 #ifndef SkPDFCanon_DEFINED |
8 #define SkPDFCanon_DEFINED | 8 #define SkPDFCanon_DEFINED |
9 | 9 |
10 #include "SkPDFGraphicState.h" | 10 #include "SkPDFGraphicState.h" |
11 #include "SkPDFShader.h" | 11 #include "SkPDFShader.h" |
12 #include "SkPixelSerializer.h" | 12 #include "SkPixelSerializer.h" |
13 #include "SkTDArray.h" | 13 #include "SkTDArray.h" |
14 #include "SkTHash.h" | 14 #include "SkTHash.h" |
15 #include "SkBitmapKey.h" | 15 #include "SkBitmapKey.h" |
16 | 16 |
17 class SkAdvancedTypefaceMetrics; | |
18 class SkPDFFont; | 17 class SkPDFFont; |
19 | 18 |
20 /** | 19 /** |
21 * The SkPDFCanon canonicalizes objects across PDF pages | 20 * The SkPDFCanon canonicalizes objects across PDF pages |
22 * (SkPDFDevices) and across draw calls. | 21 * (SkPDFDevices) and across draw calls. |
23 * | 22 * |
24 * The PDF backend works correctly if: | 23 * The PDF backend works correctly if: |
25 * - There is no more than one SkPDFCanon for each thread. | 24 * - There is no more than one SkPDFCanon for each thread. |
26 * - Every SkPDFDevice is given a pointer to a SkPDFCanon on creation. | 25 * - Every SkPDFDevice is given a pointer to a SkPDFCanon on creation. |
27 * - All SkPDFDevices in a document share the same SkPDFCanon. | 26 * - All SkPDFDevices in a document share the same SkPDFCanon. |
28 * The SkPDFDocument class makes this happen by owning a single | 27 * The SkPDFDocument class makes this happen by owning a single |
29 * SkPDFCanon. | 28 * SkPDFCanon. |
30 * | 29 * |
31 * The addFoo() methods will ref the Foo; the canon's destructor will | 30 * The addFoo() methods will ref the Foo; the canon's destructor will |
32 * call foo->unref() on all of these objects. | 31 * call foo->unref() on all of these objects. |
33 * | 32 * |
34 * The findFoo() methods do not change the ref count of the Foo | 33 * The findFoo() methods do not change the ref count of the Foo |
35 * objects. | 34 * objects. |
36 */ | 35 */ |
37 class SkPDFCanon : SkNoncopyable { | 36 class SkPDFCanon : SkNoncopyable { |
38 public: | 37 public: |
39 ~SkPDFCanon(); | 38 ~SkPDFCanon() { this->reset(); } |
40 | 39 |
41 // reset to original setting, unrefs all objects. | 40 // reset to original setting, unrefs all objects. |
42 void reset(); | 41 void reset(); |
43 | 42 |
| 43 // Returns exact match if there is one. If not, it returns nullptr. |
| 44 // If there is no exact match, but there is a related font, we |
| 45 // still return nullptr, but also set *relatedFont. |
| 46 SkPDFFont* findFont(uint32_t fontID, |
| 47 uint16_t glyphID, |
| 48 SkPDFFont** relatedFont) const; |
| 49 void addFont(SkPDFFont* font, uint32_t fontID, uint16_t fGlyphID); |
| 50 |
44 sk_sp<SkPDFObject> findFunctionShader(const SkPDFShader::State&) const; | 51 sk_sp<SkPDFObject> findFunctionShader(const SkPDFShader::State&) const; |
45 void addFunctionShader(sk_sp<SkPDFObject>, SkPDFShader::State); | 52 void addFunctionShader(sk_sp<SkPDFObject>, SkPDFShader::State); |
46 | 53 |
47 sk_sp<SkPDFObject> findAlphaShader(const SkPDFShader::State&) const; | 54 sk_sp<SkPDFObject> findAlphaShader(const SkPDFShader::State&) const; |
48 void addAlphaShader(sk_sp<SkPDFObject>, SkPDFShader::State); | 55 void addAlphaShader(sk_sp<SkPDFObject>, SkPDFShader::State); |
49 | 56 |
50 sk_sp<SkPDFObject> findImageShader(const SkPDFShader::State&) const; | 57 sk_sp<SkPDFObject> findImageShader(const SkPDFShader::State&) const; |
51 void addImageShader(sk_sp<SkPDFObject>, SkPDFShader::State); | 58 void addImageShader(sk_sp<SkPDFObject>, SkPDFShader::State); |
52 | 59 |
53 const SkPDFGraphicState* findGraphicState(const SkPDFGraphicState&) const; | 60 const SkPDFGraphicState* findGraphicState(const SkPDFGraphicState&) const; |
54 void addGraphicState(const SkPDFGraphicState*); | 61 void addGraphicState(const SkPDFGraphicState*); |
55 | 62 |
56 sk_sp<SkPDFObject> findPDFBitmap(SkBitmapKey key) const; | 63 sk_sp<SkPDFObject> findPDFBitmap(SkBitmapKey key) const; |
57 void addPDFBitmap(SkBitmapKey key, sk_sp<SkPDFObject>); | 64 void addPDFBitmap(SkBitmapKey key, sk_sp<SkPDFObject>); |
58 | 65 |
59 SkTHashMap<uint32_t, SkAdvancedTypefaceMetrics*> fTypefaceMetrics; | 66 SkTHashMap<uint32_t, bool> fCanEmbedTypeface; |
60 SkTHashMap<uint32_t, SkPDFDict*> fFontDescriptors; | |
61 SkTHashMap<uint64_t, SkPDFFont*> fFontMap; | |
62 | 67 |
63 SkPixelSerializer* getPixelSerializer() const { return fPixelSerializer.get(
); } | 68 SkPixelSerializer* getPixelSerializer() const { return fPixelSerializer.get(
); } |
64 void setPixelSerializer(sk_sp<SkPixelSerializer> ps) { | 69 void setPixelSerializer(sk_sp<SkPixelSerializer> ps) { |
65 fPixelSerializer = std::move(ps); | 70 fPixelSerializer = std::move(ps); |
66 } | 71 } |
67 | 72 |
68 sk_sp<SkPDFStream> makeInvertFunction(); | 73 sk_sp<SkPDFStream> makeInvertFunction(); |
69 sk_sp<SkPDFDict> makeNoSmaskGraphicState(); | 74 sk_sp<SkPDFDict> makeNoSmaskGraphicState(); |
70 sk_sp<SkPDFArray> makeRangeObject(); | 75 sk_sp<SkPDFArray> makeRangeObject(); |
71 | 76 |
72 private: | 77 private: |
| 78 struct FontRec { |
| 79 SkPDFFont* fFont; |
| 80 uint32_t fFontID; |
| 81 uint16_t fGlyphID; |
| 82 }; |
| 83 SkTDArray<FontRec> fFontRecords; |
| 84 |
73 struct ShaderRec { | 85 struct ShaderRec { |
74 SkPDFShader::State fShaderState; | 86 SkPDFShader::State fShaderState; |
75 sk_sp<SkPDFObject> fShaderObject; | 87 sk_sp<SkPDFObject> fShaderObject; |
76 ShaderRec(SkPDFShader::State s, sk_sp<SkPDFObject> o) | 88 ShaderRec(SkPDFShader::State s, sk_sp<SkPDFObject> o) |
77 : fShaderState(std::move(s)), fShaderObject(std::move(o)) {} | 89 : fShaderState(std::move(s)), fShaderObject(std::move(o)) {} |
78 }; | 90 }; |
79 SkTArray<ShaderRec> fFunctionShaderRecords; | 91 SkTArray<ShaderRec> fFunctionShaderRecords; |
80 SkTArray<ShaderRec> fAlphaShaderRecords; | 92 SkTArray<ShaderRec> fAlphaShaderRecords; |
81 SkTArray<ShaderRec> fImageShaderRecords; | 93 SkTArray<ShaderRec> fImageShaderRecords; |
82 | 94 |
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99 | 111 |
100 // TODO(halcanary): make SkTHashMap<K, sk_sp<V>> work correctly. | 112 // TODO(halcanary): make SkTHashMap<K, sk_sp<V>> work correctly. |
101 SkTHashMap<SkBitmapKey, SkPDFObject*> fPDFBitmapMap; | 113 SkTHashMap<SkBitmapKey, SkPDFObject*> fPDFBitmapMap; |
102 | 114 |
103 sk_sp<SkPixelSerializer> fPixelSerializer; | 115 sk_sp<SkPixelSerializer> fPixelSerializer; |
104 sk_sp<SkPDFStream> fInvertFunction; | 116 sk_sp<SkPDFStream> fInvertFunction; |
105 sk_sp<SkPDFDict> fNoSmaskGraphicState; | 117 sk_sp<SkPDFDict> fNoSmaskGraphicState; |
106 sk_sp<SkPDFArray> fRangeObject; | 118 sk_sp<SkPDFArray> fRangeObject; |
107 }; | 119 }; |
108 #endif // SkPDFCanon_DEFINED | 120 #endif // SkPDFCanon_DEFINED |
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