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1 /* | 1 /* |
2 * Copyright 2011 The Android Open Source Project | 2 * Copyright 2011 The Android Open Source Project |
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 "SkAdvancedTypefaceMetrics.h" | 8 #include "SkAdvancedTypefaceMetrics.h" |
9 #include "SkEndian.h" | 9 #include "SkEndian.h" |
10 #include "SkFontDescriptor.h" | 10 #include "SkFontDescriptor.h" |
11 #include "SkFontMgr.h" | 11 #include "SkFontMgr.h" |
12 #include "SkLazyPtr.h" | 12 #include "SkLazyPtr.h" |
13 #include "SkMutex.h" | 13 #include "SkMutex.h" |
14 #include "SkOTTable_OS_2.h" | 14 #include "SkOTTable_OS_2.h" |
15 #include "SkStream.h" | 15 #include "SkStream.h" |
16 #include "SkTypeface.h" | 16 #include "SkTypeface.h" |
17 | 17 |
18 SkTypeface::SkTypeface(const SkFontStyle& style, SkFontID fontID, bool isFixedPi
tch) | 18 SkTypeface::SkTypeface(const SkFontStyle& style, SkFontID fontID, bool isFixedPi
tch) |
19 : fUniqueID(fontID), fStyle(style), fIsFixedPitch(isFixedPitch) { } | 19 : fUniqueID(fontID), fStyle(style), fIsFixedPitch(isFixedPitch) { } |
20 | 20 |
21 SkTypeface::~SkTypeface() { } | 21 SkTypeface::~SkTypeface() { } |
22 | 22 |
| 23 #ifdef SK_WHITELIST_SERIALIZED_TYPEFACES |
| 24 extern void WhitelistSerializeTypeface(const SkTypeface*, SkWStream* ); |
| 25 #define SK_TYPEFACE_DELEGATE WhitelistSerializeTypeface |
| 26 #else |
| 27 #define SK_TYPEFACE_DELEGATE nullptr |
| 28 #endif |
23 | 29 |
24 SkTypeface* (*gCreateTypefaceDelegate)(const char [], SkTypeface::Style ) = null
ptr; | 30 SkTypeface* (*gCreateTypefaceDelegate)(const char [], SkTypeface::Style ) = null
ptr; |
| 31 void (*gSerializeTypefaceDelegate)(const SkTypeface*, SkWStream* ) = SK_TYPEFACE
_DELEGATE; |
| 32 SkTypeface* (*gDeserializeTypefaceDelegate)(SkStream* ) = nullptr; |
25 | 33 |
26 /////////////////////////////////////////////////////////////////////////////// | 34 /////////////////////////////////////////////////////////////////////////////// |
27 | 35 |
28 class SkEmptyTypeface : public SkTypeface { | 36 class SkEmptyTypeface : public SkTypeface { |
29 public: | 37 public: |
30 static SkEmptyTypeface* Create() { return new SkEmptyTypeface; } | 38 static SkEmptyTypeface* Create() { return new SkEmptyTypeface; } |
31 protected: | 39 protected: |
32 SkEmptyTypeface() : SkTypeface(SkFontStyle(), 0, true) { } | 40 SkEmptyTypeface() : SkTypeface(SkFontStyle(), 0, true) { } |
33 | 41 |
34 SkStreamAsset* onOpenStream(int* ttcIndex) const override { return nullptr;
} | 42 SkStreamAsset* onOpenStream(int* ttcIndex) const override { return nullptr;
} |
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157 } | 165 } |
158 | 166 |
159 SkTypeface* SkTypeface::CreateFromFile(const char path[], int index) { | 167 SkTypeface* SkTypeface::CreateFromFile(const char path[], int index) { |
160 SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault()); | 168 SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault()); |
161 return fm->createFromFile(path, index); | 169 return fm->createFromFile(path, index); |
162 } | 170 } |
163 | 171 |
164 /////////////////////////////////////////////////////////////////////////////// | 172 /////////////////////////////////////////////////////////////////////////////// |
165 | 173 |
166 void SkTypeface::serialize(SkWStream* wstream) const { | 174 void SkTypeface::serialize(SkWStream* wstream) const { |
| 175 if (gSerializeTypefaceDelegate) { |
| 176 (*gSerializeTypefaceDelegate)(this, wstream); |
| 177 return; |
| 178 } |
167 bool isLocal = false; | 179 bool isLocal = false; |
168 SkFontDescriptor desc(this->style()); | 180 SkFontDescriptor desc(this->style()); |
169 this->onGetFontDescriptor(&desc, &isLocal); | 181 this->onGetFontDescriptor(&desc, &isLocal); |
170 | 182 |
171 // Embed font data if it's a local font. | 183 // Embed font data if it's a local font. |
172 if (isLocal && !desc.hasFontData()) { | 184 if (isLocal && !desc.hasFontData()) { |
173 desc.setFontData(this->onCreateFontData()); | 185 desc.setFontData(this->onCreateFontData()); |
174 } | 186 } |
175 desc.serialize(wstream); | 187 desc.serialize(wstream); |
176 } | 188 } |
177 | 189 |
178 void SkTypeface::serializeForcingEmbedding(SkWStream* wstream) const { | |
179 bool ignoredIsLocal; | |
180 SkFontDescriptor desc(this->style()); | |
181 this->onGetFontDescriptor(&desc, &ignoredIsLocal); | |
182 | |
183 // Always embed font data. | |
184 if (!desc.hasFontData()) { | |
185 desc.setFontData(this->onCreateFontData()); | |
186 } | |
187 desc.serialize(wstream); | |
188 } | |
189 | |
190 SkTypeface* SkTypeface::Deserialize(SkStream* stream) { | 190 SkTypeface* SkTypeface::Deserialize(SkStream* stream) { |
| 191 if (gDeserializeTypefaceDelegate) { |
| 192 return (*gDeserializeTypefaceDelegate)(stream); |
| 193 } |
191 SkFontDescriptor desc(stream); | 194 SkFontDescriptor desc(stream); |
192 SkFontData* data = desc.detachFontData(); | 195 SkFontData* data = desc.detachFontData(); |
193 if (data) { | 196 if (data) { |
194 SkTypeface* typeface = SkTypeface::CreateFromFontData(data); | 197 SkTypeface* typeface = SkTypeface::CreateFromFontData(data); |
195 if (typeface) { | 198 if (typeface) { |
196 return typeface; | 199 return typeface; |
197 } | 200 } |
198 } | 201 } |
199 return SkTypeface::CreateFromName(desc.getFamilyName(), desc.getStyle()); | 202 return SkTypeface::CreateFromName(desc.getFamilyName(), desc.getStyle()); |
200 } | 203 } |
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363 if (ctx.get()) { | 366 if (ctx.get()) { |
364 SkPaint::FontMetrics fm; | 367 SkPaint::FontMetrics fm; |
365 ctx->getFontMetrics(&fm); | 368 ctx->getFontMetrics(&fm); |
366 bounds->set(fm.fXMin * invTextSize, fm.fTop * invTextSize, | 369 bounds->set(fm.fXMin * invTextSize, fm.fTop * invTextSize, |
367 fm.fXMax * invTextSize, fm.fBottom * invTextSize); | 370 fm.fXMax * invTextSize, fm.fBottom * invTextSize); |
368 return true; | 371 return true; |
369 } | 372 } |
370 return false; | 373 return false; |
371 } | 374 } |
372 | 375 |
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