SkTypeface_win_dw.h 5.8 KB

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  1. /*
  2. * Copyright 2014 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. #ifndef SkTypeface_win_dw_DEFINED
  8. #define SkTypeface_win_dw_DEFINED
  9. #include "include/core/SkTypeface.h"
  10. #include "src/core/SkAdvancedTypefaceMetrics.h"
  11. #include "src/core/SkLeanWindows.h"
  12. #include "src/core/SkTypefaceCache.h"
  13. #include "src/utils/win/SkDWrite.h"
  14. #include "src/utils/win/SkHRESULT.h"
  15. #include "src/utils/win/SkTScopedComPtr.h"
  16. #include <dwrite.h>
  17. #include <dwrite_1.h>
  18. #include <dwrite_2.h>
  19. #include <dwrite_3.h>
  20. class SkFontDescriptor;
  21. struct SkScalerContextRec;
  22. static SkFontStyle get_style(IDWriteFont* font) {
  23. int weight = font->GetWeight();
  24. int width = font->GetStretch();
  25. SkFontStyle::Slant slant = SkFontStyle::kUpright_Slant;
  26. switch (font->GetStyle()) {
  27. case DWRITE_FONT_STYLE_NORMAL: slant = SkFontStyle::kUpright_Slant; break;
  28. case DWRITE_FONT_STYLE_OBLIQUE: slant = SkFontStyle::kOblique_Slant; break;
  29. case DWRITE_FONT_STYLE_ITALIC: slant = SkFontStyle::kItalic_Slant; break;
  30. default: SkASSERT(false); break;
  31. }
  32. return SkFontStyle(weight, width, slant);
  33. }
  34. class DWriteFontTypeface : public SkTypeface {
  35. private:
  36. DWriteFontTypeface(const SkFontStyle& style,
  37. IDWriteFactory* factory,
  38. IDWriteFontFace* fontFace,
  39. IDWriteFont* font,
  40. IDWriteFontFamily* fontFamily,
  41. IDWriteFontFileLoader* fontFileLoader = nullptr,
  42. IDWriteFontCollectionLoader* fontCollectionLoader = nullptr)
  43. : SkTypeface(style, false)
  44. , fFactory(SkRefComPtr(factory))
  45. , fDWriteFontCollectionLoader(SkSafeRefComPtr(fontCollectionLoader))
  46. , fDWriteFontFileLoader(SkSafeRefComPtr(fontFileLoader))
  47. , fDWriteFontFamily(SkRefComPtr(fontFamily))
  48. , fDWriteFont(SkRefComPtr(font))
  49. , fDWriteFontFace(SkRefComPtr(fontFace))
  50. {
  51. if (!SUCCEEDED(fDWriteFontFace->QueryInterface(&fDWriteFontFace1))) {
  52. // IUnknown::QueryInterface states that if it fails, punk will be set to nullptr.
  53. // http://blogs.msdn.com/b/oldnewthing/archive/2004/03/26/96777.aspx
  54. SkASSERT_RELEASE(nullptr == fDWriteFontFace1.get());
  55. }
  56. if (!SUCCEEDED(fDWriteFontFace->QueryInterface(&fDWriteFontFace2))) {
  57. SkASSERT_RELEASE(nullptr == fDWriteFontFace2.get());
  58. }
  59. if (!SUCCEEDED(fDWriteFontFace->QueryInterface(&fDWriteFontFace4))) {
  60. SkASSERT_RELEASE(nullptr == fDWriteFontFace4.get());
  61. }
  62. if (!SUCCEEDED(fFactory->QueryInterface(&fFactory2))) {
  63. SkASSERT_RELEASE(nullptr == fFactory2.get());
  64. }
  65. }
  66. public:
  67. SkTScopedComPtr<IDWriteFactory> fFactory;
  68. SkTScopedComPtr<IDWriteFactory2> fFactory2;
  69. SkTScopedComPtr<IDWriteFontCollectionLoader> fDWriteFontCollectionLoader;
  70. SkTScopedComPtr<IDWriteFontFileLoader> fDWriteFontFileLoader;
  71. SkTScopedComPtr<IDWriteFontFamily> fDWriteFontFamily;
  72. SkTScopedComPtr<IDWriteFont> fDWriteFont;
  73. SkTScopedComPtr<IDWriteFontFace> fDWriteFontFace;
  74. SkTScopedComPtr<IDWriteFontFace1> fDWriteFontFace1;
  75. SkTScopedComPtr<IDWriteFontFace2> fDWriteFontFace2;
  76. SkTScopedComPtr<IDWriteFontFace4> fDWriteFontFace4;
  77. static sk_sp<DWriteFontTypeface> Make(
  78. IDWriteFactory* factory,
  79. IDWriteFontFace* fontFace,
  80. IDWriteFont* font,
  81. IDWriteFontFamily* fontFamily,
  82. IDWriteFontFileLoader* fontFileLoader = nullptr,
  83. IDWriteFontCollectionLoader* fontCollectionLoader = nullptr)
  84. {
  85. return sk_sp<DWriteFontTypeface>(
  86. new DWriteFontTypeface(get_style(font), factory, fontFace, font, fontFamily,
  87. fontFileLoader, fontCollectionLoader));
  88. }
  89. protected:
  90. void weak_dispose() const override {
  91. if (fDWriteFontCollectionLoader.get()) {
  92. HRV(fFactory->UnregisterFontCollectionLoader(fDWriteFontCollectionLoader.get()));
  93. }
  94. if (fDWriteFontFileLoader.get()) {
  95. HRV(fFactory->UnregisterFontFileLoader(fDWriteFontFileLoader.get()));
  96. }
  97. //SkTypefaceCache::Remove(this);
  98. INHERITED::weak_dispose();
  99. }
  100. sk_sp<SkTypeface> onMakeClone(const SkFontArguments&) const override;
  101. std::unique_ptr<SkStreamAsset> onOpenStream(int* ttcIndex) const override;
  102. SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&,
  103. const SkDescriptor*) const override;
  104. void onFilterRec(SkScalerContextRec*) const override;
  105. void getGlyphToUnicodeMap(SkUnichar* glyphToUnicode) const override;
  106. std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override;
  107. void onGetFontDescriptor(SkFontDescriptor*, bool*) const override;
  108. void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override;
  109. int onCountGlyphs() const override;
  110. void getPostScriptGlyphNames(SkString*) const override;
  111. int onGetUPEM() const override;
  112. void onGetFamilyName(SkString* familyName) const override;
  113. SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override;
  114. int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[],
  115. int coordinateCount) const override;
  116. int onGetVariationDesignParameters(SkFontParameters::Variation::Axis parameters[],
  117. int parameterCount) const override;
  118. int onGetTableTags(SkFontTableTag tags[]) const override;
  119. size_t onGetTableData(SkFontTableTag, size_t offset, size_t length, void* data) const override;
  120. sk_sp<SkData> onCopyTableData(SkFontTableTag) const override;
  121. private:
  122. typedef SkTypeface INHERITED;
  123. };
  124. #endif