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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 | 23 |
24 SkTypeface* (*gCreateTypefaceDelegate)(const char [], SkTypeface::Style ) = NULL
; | 24 SkTypeface* (*gCreateTypefaceDelegate)(const char [], SkTypeface::Style ) = NULL
; |
25 | 25 |
26 /////////////////////////////////////////////////////////////////////////////// | 26 /////////////////////////////////////////////////////////////////////////////// |
27 | 27 |
28 class SkEmptyTypeface : public SkTypeface { | 28 class SkEmptyTypeface : public SkTypeface { |
29 public: | 29 public: |
30 static SkEmptyTypeface* Create() { | 30 static SkEmptyTypeface* Create() { return new SkEmptyTypeface; } |
31 return SkNEW(SkEmptyTypeface); | |
32 } | |
33 protected: | 31 protected: |
34 SkEmptyTypeface() : SkTypeface(SkFontStyle(), 0, true) { } | 32 SkEmptyTypeface() : SkTypeface(SkFontStyle(), 0, true) { } |
35 | 33 |
36 SkStreamAsset* onOpenStream(int* ttcIndex) const override { return NULL; } | 34 SkStreamAsset* onOpenStream(int* ttcIndex) const override { return NULL; } |
37 SkScalerContext* onCreateScalerContext(const SkDescriptor*) const override { | 35 SkScalerContext* onCreateScalerContext(const SkDescriptor*) const override { |
38 return NULL; | 36 return NULL; |
39 } | 37 } |
40 void onFilterRec(SkScalerContextRec*) const override { } | 38 void onFilterRec(SkScalerContextRec*) const override { } |
41 virtual SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics( | 39 virtual SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics( |
42 PerGlyphInfo, | 40 PerGlyphInfo, |
43 const uint32_t*, uint32_t) const override { retu
rn NULL; } | 41 const uint32_t*, uint32_t) const override { retu
rn NULL; } |
44 void onGetFontDescriptor(SkFontDescriptor*, bool*) const override { } | 42 void onGetFontDescriptor(SkFontDescriptor*, bool*) const override { } |
45 virtual int onCharsToGlyphs(const void* chars, Encoding encoding, | 43 virtual int onCharsToGlyphs(const void* chars, Encoding encoding, |
46 uint16_t glyphs[], int glyphCount) const overrid
e { | 44 uint16_t glyphs[], int glyphCount) const overrid
e { |
47 if (glyphs && glyphCount > 0) { | 45 if (glyphs && glyphCount > 0) { |
48 sk_bzero(glyphs, glyphCount * sizeof(glyphs[0])); | 46 sk_bzero(glyphs, glyphCount * sizeof(glyphs[0])); |
49 } | 47 } |
50 return 0; | 48 return 0; |
51 } | 49 } |
52 int onCountGlyphs() const override { return 0; }; | 50 int onCountGlyphs() const override { return 0; }; |
53 int onGetUPEM() const override { return 0; }; | 51 int onGetUPEM() const override { return 0; }; |
54 class EmptyLocalizedStrings : public SkTypeface::LocalizedStrings { | 52 class EmptyLocalizedStrings : public SkTypeface::LocalizedStrings { |
55 public: | 53 public: |
56 bool next(SkTypeface::LocalizedString*) override { return false; } | 54 bool next(SkTypeface::LocalizedString*) override { return false; } |
57 }; | 55 }; |
58 void onGetFamilyName(SkString* familyName) const override { | 56 void onGetFamilyName(SkString* familyName) const override { |
59 familyName->reset(); | 57 familyName->reset(); |
60 } | 58 } |
61 SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override { | 59 SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override { |
62 return SkNEW(EmptyLocalizedStrings); | 60 return new EmptyLocalizedStrings; |
63 }; | 61 }; |
64 int onGetTableTags(SkFontTableTag tags[]) const override { return 0; } | 62 int onGetTableTags(SkFontTableTag tags[]) const override { return 0; } |
65 size_t onGetTableData(SkFontTableTag, size_t, size_t, void*) const override
{ | 63 size_t onGetTableData(SkFontTableTag, size_t, size_t, void*) const override
{ |
66 return 0; | 64 return 0; |
67 } | 65 } |
68 }; | 66 }; |
69 | 67 |
70 namespace { | 68 namespace { |
71 | 69 |
72 SK_DECLARE_STATIC_MUTEX(gCreateDefaultMutex); | 70 SK_DECLARE_STATIC_MUTEX(gCreateDefaultMutex); |
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323 | 321 |
324 #include "SkDescriptor.h" | 322 #include "SkDescriptor.h" |
325 #include "SkPaint.h" | 323 #include "SkPaint.h" |
326 | 324 |
327 struct SkTypeface::BoundsComputer { | 325 struct SkTypeface::BoundsComputer { |
328 const SkTypeface& fTypeface; | 326 const SkTypeface& fTypeface; |
329 | 327 |
330 BoundsComputer(const SkTypeface& tf) : fTypeface(tf) {} | 328 BoundsComputer(const SkTypeface& tf) : fTypeface(tf) {} |
331 | 329 |
332 SkRect* operator()() const { | 330 SkRect* operator()() const { |
333 SkRect* rect = SkNEW(SkRect); | 331 SkRect* rect = new SkRect; |
334 if (!fTypeface.onComputeBounds(rect)) { | 332 if (!fTypeface.onComputeBounds(rect)) { |
335 rect->setEmpty(); | 333 rect->setEmpty(); |
336 } | 334 } |
337 return rect; | 335 return rect; |
338 } | 336 } |
339 }; | 337 }; |
340 | 338 |
341 SkRect SkTypeface::getBounds() const { | 339 SkRect SkTypeface::getBounds() const { |
342 return *fLazyBounds.get(BoundsComputer(*this)); | 340 return *fLazyBounds.get(BoundsComputer(*this)); |
343 } | 341 } |
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365 if (ctx.get()) { | 363 if (ctx.get()) { |
366 SkPaint::FontMetrics fm; | 364 SkPaint::FontMetrics fm; |
367 ctx->getFontMetrics(&fm); | 365 ctx->getFontMetrics(&fm); |
368 bounds->set(fm.fXMin * invTextSize, fm.fTop * invTextSize, | 366 bounds->set(fm.fXMin * invTextSize, fm.fTop * invTextSize, |
369 fm.fXMax * invTextSize, fm.fBottom * invTextSize); | 367 fm.fXMax * invTextSize, fm.fBottom * invTextSize); |
370 return true; | 368 return true; |
371 } | 369 } |
372 return false; | 370 return false; |
373 } | 371 } |
374 | 372 |
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