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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 "SkBitmap.h" | 8 #include "SkBitmap.h" |
9 #include "SkCanvas.h" | 9 #include "SkCanvas.h" |
10 #include "SkDescriptor.h" | 10 #include "SkDescriptor.h" |
| 11 #include "SkFontDescriptor.h" |
11 #include "SkGlyph.h" | 12 #include "SkGlyph.h" |
12 #include "SkMask.h" | 13 #include "SkMask.h" |
13 // #include "SkOTUtils.h" | 14 // #include "SkOTUtils.h" |
14 #include "SkScalerContext.h" | 15 #include "SkScalerContext.h" |
15 #include "SkTestScalerContext.h" | 16 #include "SkTestScalerContext.h" |
16 #include "SkTypefaceCache.h" | 17 #include "SkTypefaceCache.h" |
17 | 18 |
18 class SkTestTypeface : public SkTypeface { | 19 SkTestFont::SkTestFont(const SkTestFontData& fontData) |
19 public: | 20 : INHERITED() |
20 SkTestTypeface(SkPaint::FontMetrics (*funct)(SkTDArray<SkPath*>& , SkTDArray
<SkFixed>& ), | 21 , fCharCodes(fontData.fCharCodes) |
21 SkTypeface::Style style) | 22 , fCharCodesCount(fontData.fCharCodesCount) |
22 : SkTypeface(style, SkTypefaceCache::NewFontID(), false) { | 23 , fWidths(fontData.fWidths) |
23 fMetrics = (*funct)(fPaths, fWidths); | 24 , fMetrics(fontData.fMetrics) |
| 25 , fName(fontData.fName) |
| 26 , fPaths(NULL) |
| 27 { |
| 28 init(fontData.fPoints, fontData.fVerbs); |
| 29 #ifdef SK_DEBUG |
| 30 sk_bzero(fDebugBits, sizeof(fDebugBits)); |
| 31 sk_bzero(fDebugOverage, sizeof(fDebugOverage)); |
| 32 #endif |
| 33 } |
| 34 |
| 35 SkTestFont::~SkTestFont() { |
| 36 for (unsigned index = 0; index < fCharCodesCount; ++index) { |
| 37 SkDELETE(fPaths[index]); |
24 } | 38 } |
| 39 SkDELETE_ARRAY(fPaths); |
| 40 } |
25 | 41 |
26 virtual ~SkTestTypeface() { | 42 #ifdef SK_DEBUG |
27 fPaths.deleteAll(); | |
28 } | |
29 | 43 |
30 void getAdvance(SkGlyph* glyph) { | 44 #include "SkThread.h" |
31 glyph->fAdvanceX = fWidths[SkGlyph::ID2Code(glyph->fID)]; | 45 SK_DECLARE_STATIC_MUTEX(gUsedCharsMutex); |
32 glyph->fAdvanceY = 0; | |
33 } | |
34 | 46 |
35 void getFontMetrics(SkPaint::FontMetrics* metrics) { | 47 #endif |
36 *metrics = fMetrics; | |
37 } | |
38 | 48 |
39 void getMetrics(SkGlyph* glyph) { | 49 int SkTestFont::codeToIndex(SkUnichar charCode) const { |
40 glyph->fAdvanceX = fWidths[SkGlyph::ID2Code(glyph->fID)]; | 50 #ifdef SK_DEBUG // detect missing test font data |
41 glyph->fAdvanceY = 0; | 51 { |
42 } | 52 SkAutoMutexAcquire ac(gUsedCharsMutex); |
43 | 53 if (charCode >= ' ' && charCode <= '~') { |
44 void getPath(const SkGlyph& glyph, SkPath* path) { | 54 int bitOffset = charCode - ' '; |
45 *path = *fPaths[SkGlyph::ID2Code(glyph.fID)]; | 55 fDebugBits[bitOffset >> 3] |= 1 << (bitOffset & 7); |
46 } | 56 } else { |
47 | 57 int index = 0; |
48 protected: | 58 while (fDebugOverage[index] != 0 && fDebugOverage[index] != charCode |
49 virtual SkScalerContext* onCreateScalerContext(const SkDescriptor* desc) con
st SK_OVERRIDE; | 59 && index < (int) sizeof(fDebugOverage)) { |
50 | 60 ++index; |
51 virtual void onFilterRec(SkScalerContextRec* rec) const SK_OVERRIDE { | 61 } |
52 rec->setHinting(SkPaint::kNo_Hinting); | 62 SkASSERT(index < (int) sizeof(fDebugOverage)); |
53 rec->fMaskFormat = SkMask::kA8_Format; | 63 if (fDebugOverage[index] == 0) { |
54 } | 64 fDebugOverage[index] = charCode; |
55 | |
56 virtual SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics( | |
57 SkAdvancedTypefaceMetrics::PerGlyphInfo , | |
58 const uint32_t* glyphIDs, | |
59 uint32_t glyphIDsCount) const SK_OVERRIDE { | |
60 // pdf only | |
61 SkAdvancedTypefaceMetrics* info = new SkAdvancedTypefaceMetrics; | |
62 info->fEmSize = 0; | |
63 info->fLastGlyphID = SkToU16(onCountGlyphs() - 1); | |
64 info->fStyle = 0; | |
65 info->fFontName.set("SkiaTest"); | |
66 info->fType = SkAdvancedTypefaceMetrics::kOther_Font; | |
67 info->fItalicAngle = 0; | |
68 info->fAscent = 0; | |
69 info->fDescent = 0; | |
70 info->fStemV = 0; | |
71 info->fCapHeight = 0; | |
72 info->fBBox = SkIRect::MakeEmpty(); | |
73 return info; | |
74 } | |
75 | |
76 virtual SkStream* onOpenStream(int* ttcIndex) const SK_OVERRIDE { | |
77 SkASSERT(0); // don't expect to get here | |
78 return NULL; | |
79 } | |
80 | |
81 virtual void onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) cons
t SK_OVERRIDE { | |
82 SkASSERT(0); // don't expect to get here | |
83 } | |
84 | |
85 virtual int onCharsToGlyphs(const void* chars, Encoding encoding, | |
86 uint16_t glyphs[], int glyphCount) const SK_OVER
RIDE { | |
87 SkASSERT(encoding == kUTF8_Encoding); | |
88 for (int index = 0; index < glyphCount; ++index) { | |
89 int ch = ((unsigned char*) chars)[index]; | |
90 SkASSERT(ch < 0x7F); | |
91 if (ch < 0x20) { | |
92 glyphs[index] = 0; | |
93 } else { | |
94 glyphs[index] = ch - 0x20; | |
95 } | 65 } |
96 } | 66 } |
97 return glyphCount; | |
98 } | 67 } |
| 68 #endif |
| 69 for (unsigned index = 0; index < fCharCodesCount; ++index) { |
| 70 if (fCharCodes[index] == (unsigned) charCode) { |
| 71 return (int) index; |
| 72 } |
| 73 } |
| 74 SkDEBUGF(("missing '%c' (%d) from %s %d\n", (char) charCode, charCode, |
| 75 fDebugName, fDebugStyle)); |
| 76 return 0; |
| 77 } |
99 | 78 |
100 virtual int onCountGlyphs() const SK_OVERRIDE { | 79 void SkTestFont::init(const SkScalar* pts, const unsigned char* verbs) { |
101 return fPaths.count(); | 80 fPaths = SkNEW_ARRAY(SkPath*, fCharCodesCount); |
| 81 for (unsigned index = 0; index < fCharCodesCount; ++index) { |
| 82 SkPath* path = SkNEW(SkPath); |
| 83 SkPath::Verb verb; |
| 84 while ((verb = (SkPath::Verb) *verbs++) != SkPath::kDone_Verb) { |
| 85 switch (verb) { |
| 86 case SkPath::kMove_Verb: |
| 87 path->moveTo(pts[0], pts[1]); |
| 88 pts += 2; |
| 89 break; |
| 90 case SkPath::kLine_Verb: |
| 91 path->lineTo(pts[0], pts[1]); |
| 92 pts += 2; |
| 93 break; |
| 94 case SkPath::kQuad_Verb: |
| 95 path->quadTo(pts[0], pts[1], pts[2], pts[3]); |
| 96 pts += 4; |
| 97 break; |
| 98 case SkPath::kCubic_Verb: |
| 99 path->cubicTo(pts[0], pts[1], pts[2], pts[3], pts[4], pts[5]
); |
| 100 pts += 6; |
| 101 break; |
| 102 case SkPath::kClose_Verb: |
| 103 path->close(); |
| 104 break; |
| 105 default: |
| 106 SkDEBUGFAIL("bad verb"); |
| 107 return; |
| 108 } |
| 109 } |
| 110 fPaths[index] = path; |
102 } | 111 } |
| 112 } |
| 113 |
| 114 SkTestTypeface::SkTestTypeface(SkTestFont* testFont, SkTypeface::Style style) |
| 115 : SkTypeface(style, SkTypefaceCache::NewFontID(), false) |
| 116 , fTestFont(testFont) { |
| 117 } |
103 | 118 |
104 virtual int onGetUPEM() const SK_OVERRIDE { | 119 void SkTestTypeface::getAdvance(SkGlyph* glyph) { |
105 SkASSERT(0); // don't expect to get here | 120 glyph->fAdvanceX = fTestFont->fWidths[SkGlyph::ID2Code(glyph->fID)]; |
106 return 1; | 121 glyph->fAdvanceY = 0; |
| 122 } |
| 123 |
| 124 void SkTestTypeface::getFontMetrics(SkPaint::FontMetrics* metrics) { |
| 125 *metrics = fTestFont->fMetrics; |
| 126 } |
| 127 |
| 128 void SkTestTypeface::getMetrics(SkGlyph* glyph) { |
| 129 glyph->fAdvanceX = fTestFont->fWidths[SkGlyph::ID2Code(glyph->fID)]; |
| 130 glyph->fAdvanceY = 0; |
| 131 } |
| 132 |
| 133 void SkTestTypeface::getPath(const SkGlyph& glyph, SkPath* path) { |
| 134 *path = *fTestFont->fPaths[SkGlyph::ID2Code(glyph.fID)]; |
| 135 } |
| 136 |
| 137 void SkTestTypeface::onFilterRec(SkScalerContextRec* rec) const { |
| 138 rec->setHinting(SkPaint::kNo_Hinting); |
| 139 rec->fMaskFormat = SkMask::kA8_Format; |
| 140 } |
| 141 |
| 142 SkAdvancedTypefaceMetrics* SkTestTypeface::onGetAdvancedTypefaceMetrics( |
| 143 SkAdvancedTypefaceMetrics::PerGlyphInfo , |
| 144 const uint32_t* glyphIDs, |
| 145 uint32_t glyphIDsCount) const { |
| 146 // pdf only |
| 147 SkAdvancedTypefaceMetrics* info = new SkAdvancedTypefaceMetrics; |
| 148 info->fEmSize = 0; |
| 149 info->fLastGlyphID = SkToU16(onCountGlyphs() - 1); |
| 150 info->fStyle = 0; |
| 151 info->fFontName.set(fTestFont->fName); |
| 152 info->fType = SkAdvancedTypefaceMetrics::kOther_Font; |
| 153 info->fItalicAngle = 0; |
| 154 info->fAscent = 0; |
| 155 info->fDescent = 0; |
| 156 info->fStemV = 0; |
| 157 info->fCapHeight = 0; |
| 158 info->fBBox = SkIRect::MakeEmpty(); |
| 159 return info; |
| 160 } |
| 161 |
| 162 void SkTestTypeface::onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal)
const { |
| 163 desc->setFamilyName(fTestFont->fName); |
| 164 desc->setFontFileName(fTestFont->fName); |
| 165 *isLocal = false; |
| 166 } |
| 167 |
| 168 int SkTestTypeface::onCharsToGlyphs(const void* chars, Encoding encoding, |
| 169 uint16_t glyphs[], int glyphCount) const { |
| 170 SkASSERT(encoding == kUTF16_Encoding); |
| 171 for (int index = 0; index < glyphCount; ++index) { |
| 172 SkUnichar ch = ((SkUnichar*) chars)[index]; |
| 173 glyphs[index] = fTestFont->codeToIndex(ch); |
107 } | 174 } |
| 175 return glyphCount; |
| 176 } |
108 | 177 |
109 virtual SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const SK_
OVERRIDE { | 178 SkTypeface::LocalizedStrings* SkTestTypeface::onCreateFamilyNameIterator() const
{ |
110 SkString familyName("SkiaTest"); | 179 SkString familyName(fTestFont->fName); |
111 SkString language("und"); //undetermined | 180 SkString language("und"); //undetermined |
112 SkASSERT(0); // incomplete | 181 SkASSERT(0); // incomplete |
113 return NULL; | 182 return NULL; |
114 // return new SkOTUtils::LocalizedStrings_SingleName(familyName, language
); | 183 // return new SkOTUtils::LocalizedStrings_SingleName(familyName, language); |
115 } | |
116 | |
117 virtual int onGetTableTags(SkFontTableTag tags[]) const SK_OVERRIDE { | |
118 return 0; | |
119 } | |
120 | |
121 virtual size_t onGetTableData(SkFontTableTag tag, size_t offset, | |
122 size_t length, void* data) const SK_OVERRIDE { | |
123 return 0; | |
124 } | |
125 | |
126 private: | |
127 SkTDArray<SkPath* > fPaths; | |
128 SkTDArray<SkFixed> fWidths; | |
129 SkPaint::FontMetrics fMetrics; | |
130 friend class SkTestScalerContext; | |
131 }; | |
132 | |
133 SkTypeface* CreateTestTypeface(SkPaint::FontMetrics (*funct)(SkTDArray<SkPath*>&
pathArray, | |
134 SkTDArray<SkFixed>& widthArray), | |
135 SkTypeface::Style style) { | |
136 SkTypeface* test = SkNEW_ARGS(SkTestTypeface, (funct, style)); | |
137 return test; | |
138 } | 184 } |
139 | 185 |
140 class SkTestScalerContext : public SkScalerContext { | 186 class SkTestScalerContext : public SkScalerContext { |
141 public: | 187 public: |
142 SkTestScalerContext(SkTestTypeface* face, const SkDescriptor* desc) | 188 SkTestScalerContext(SkTestTypeface* face, const SkDescriptor* desc) |
143 : SkScalerContext(face, desc) | 189 : SkScalerContext(face, desc) |
144 , fFace(face) | 190 , fFace(face) |
145 { | 191 { |
146 fRec.getSingleMatrix(&fMatrix); | 192 fRec.getSingleMatrix(&fMatrix); |
147 this->forceGenerateImageFromPath(); | 193 this->forceGenerateImageFromPath(); |
148 } | 194 } |
149 | 195 |
150 virtual ~SkTestScalerContext() { | 196 virtual ~SkTestScalerContext() { |
151 } | 197 } |
152 | 198 |
153 protected: | 199 protected: |
154 virtual unsigned generateGlyphCount() SK_OVERRIDE { | 200 virtual unsigned generateGlyphCount() SK_OVERRIDE { |
155 return fFace->onCountGlyphs(); | 201 return fFace->onCountGlyphs(); |
156 } | 202 } |
157 | 203 |
158 virtual uint16_t generateCharToGlyph(SkUnichar uni) SK_OVERRIDE { | 204 virtual uint16_t generateCharToGlyph(SkUnichar uni) SK_OVERRIDE { |
159 uint8_t ch = (uint8_t) uni; | |
160 SkASSERT(ch < 0x7f); | |
161 uint16_t glyph; | 205 uint16_t glyph; |
162 (void) fFace->onCharsToGlyphs((const void *) &ch, SkTypeface::kUTF8_Enco
ding, &glyph, 1); | 206 (void) fFace->onCharsToGlyphs((const void *) &uni, SkTypeface::kUTF16_En
coding, &glyph, 1); |
163 return glyph; | 207 return glyph; |
164 } | 208 } |
165 | 209 |
166 virtual void generateAdvance(SkGlyph* glyph) SK_OVERRIDE { | 210 virtual void generateAdvance(SkGlyph* glyph) SK_OVERRIDE { |
167 fFace->getAdvance(glyph); | 211 fFace->getAdvance(glyph); |
168 | 212 |
169 SkVector advance; | 213 SkVector advance; |
170 fMatrix.mapXY(SkFixedToScalar(glyph->fAdvanceX), | 214 fMatrix.mapXY(SkFixedToScalar(glyph->fAdvanceX), |
171 SkFixedToScalar(glyph->fAdvanceY), &advance); | 215 SkFixedToScalar(glyph->fAdvanceY), &advance); |
172 glyph->fAdvanceX = SkScalarToFixed(advance.fX); | 216 glyph->fAdvanceX = SkScalarToFixed(advance.fX); |
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240 } | 284 } |
241 | 285 |
242 private: | 286 private: |
243 SkTestTypeface* fFace; | 287 SkTestTypeface* fFace; |
244 SkMatrix fMatrix; | 288 SkMatrix fMatrix; |
245 }; | 289 }; |
246 | 290 |
247 SkScalerContext* SkTestTypeface::onCreateScalerContext(const SkDescriptor* desc)
const { | 291 SkScalerContext* SkTestTypeface::onCreateScalerContext(const SkDescriptor* desc)
const { |
248 return SkNEW_ARGS(SkTestScalerContext, (const_cast<SkTestTypeface*>(this), d
esc)); | 292 return SkNEW_ARGS(SkTestScalerContext, (const_cast<SkTestTypeface*>(this), d
esc)); |
249 } | 293 } |
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