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 8 #ifndef SkTypeface_win_dw_DEFINED 9 #define SkTypeface_win_dw_DEFINED 10 11 #include "include/core/SkFontArguments.h" 12 #include "include/core/SkTypeface.h" 13 #include "include/private/base/SkAPI.h" 14 #include "src/base/SkLeanWindows.h" 15 #include "src/core/SkAdvancedTypefaceMetrics.h" 16 #include "src/core/SkTypefaceCache.h" 17 #include "src/utils/win/SkDWrite.h" 18 #include "src/utils/win/SkHRESULT.h" 19 #include "src/utils/win/SkTScopedComPtr.h" 20 21 #include <dwrite.h> 22 #include <dwrite_1.h> 23 #include <dwrite_2.h> 24 #include <dwrite_3.h> 25 26 class SkFontDescriptor; 27 struct SkScalerContextRec; 28 29 /* dwrite_3.h incorrectly uses NTDDI_VERSION to hide immutable interfaces (it should only be used to 30 gate changes to public ABI). The implementation files can (and must) get away with including 31 SkDWriteNTDDI_VERSION.h which simply unsets NTDDI_VERSION, but this doesn't work well for this 32 header which can be included in SkTypeface.cpp. Instead, ensure that any declarations hidden 33 behind the NTDDI_VERSION are forward (backward?) declared here in case dwrite_3.h did not declare 34 them. */ 35 interface IDWriteFontFace4; 36 interface IDWriteFontFace7; 37 38 class DWriteFontTypeface : public SkTypeface { 39 public: 40 struct Loaders : public SkNVRefCnt<Loaders> { LoadersLoaders41 Loaders(IDWriteFactory* factory, 42 IDWriteFontFileLoader* fontFileLoader, 43 IDWriteFontCollectionLoader* fontCollectionLoader) 44 : fFactory(SkRefComPtr(factory)) 45 , fDWriteFontFileLoader(SkRefComPtr(fontFileLoader)) 46 , fDWriteFontCollectionLoader(SkRefComPtr(fontCollectionLoader)) 47 {} 48 Loaders(const Loaders&) = delete; 49 Loaders& operator=(const Loaders&) = delete; 50 Loaders(Loaders&&) = delete; 51 Loaders& operator=(Loaders&&) = delete; 52 ~Loaders(); 53 54 SkTScopedComPtr<IDWriteFactory> fFactory; 55 SkTScopedComPtr<IDWriteFontFileLoader> fDWriteFontFileLoader; 56 SkTScopedComPtr<IDWriteFontCollectionLoader> fDWriteFontCollectionLoader; 57 }; 58 59 static constexpr SkTypeface::FactoryId FactoryId = SkSetFourByteTag('d','w','r','t'); 60 static sk_sp<SkTypeface> SK_SPI MakeFromStream(std::unique_ptr<SkStreamAsset>, 61 const SkFontArguments&); 62 63 ~DWriteFontTypeface() override; 64 private: 65 DWriteFontTypeface(const SkFontStyle& style, 66 IDWriteFactory* factory, 67 IDWriteFontFace* fontFace, 68 IDWriteFont* font, 69 IDWriteFontFamily* fontFamily, 70 sk_sp<Loaders> loaders, 71 const SkFontArguments::Palette&); 72 HRESULT initializePalette(); 73 74 public: 75 SkTScopedComPtr<IDWriteFactory> fFactory; 76 SkTScopedComPtr<IDWriteFactory2> fFactory2; 77 SkTScopedComPtr<IDWriteFontFamily> fDWriteFontFamily; 78 SkTScopedComPtr<IDWriteFont> fDWriteFont; 79 SkTScopedComPtr<IDWriteFontFace> fDWriteFontFace; 80 SkTScopedComPtr<IDWriteFontFace1> fDWriteFontFace1; 81 SkTScopedComPtr<IDWriteFontFace2> fDWriteFontFace2; 82 SkTScopedComPtr<IDWriteFontFace4> fDWriteFontFace4; 83 // Once WDK 10.0.25357.0 or newer is required to build, fDWriteFontFace7 can be a smart pointer. 84 // If a smart pointer is used then ~DWriteFontTypeface must call the smart pointer's destructor, 85 // which must include code to Release the IDWriteFontFace7, but there may be no IDWriteFontFace7 86 // other than the forward declaration. Skia should never declare an IDWriteFontFace7 (other than 87 // copying the entire interface) for ODR reasons. This header cannot detect if there will be a 88 // full declaration of IDWriteFontFace7 at the ~DWriteFontTypeface implementation because of 89 // NTDDI_VERSION shenanigains, otherwise this defintition could just be ifdef'ed. 90 //SkTScopedComPtr<IDWriteFontFace7> fDWriteFontFace7; 91 IDWriteFontFace7* fDWriteFontFace7 = nullptr; 92 bool fIsColorFont; 93 94 std::unique_ptr<SkFontArguments::Palette::Override> fRequestedPaletteEntryOverrides; 95 SkFontArguments::Palette fRequestedPalette; 96 97 size_t fPaletteEntryCount; 98 std::unique_ptr<SkColor[]> fPalette; 99 std::unique_ptr<DWRITE_COLOR_F[]> fDWPalette; 100 101 static SkFontStyle GetStyle(IDWriteFont* font, IDWriteFontFace* fontFace); 102 static sk_sp<DWriteFontTypeface> Make( 103 IDWriteFactory* factory, 104 IDWriteFontFace* fontFace, 105 IDWriteFont* font, 106 IDWriteFontFamily* fontFamily, 107 sk_sp<Loaders> loaders, 108 const SkFontArguments::Palette& palette); 109 110 protected: weak_dispose()111 void weak_dispose() const override { 112 fLoaders.reset(); 113 114 //SkTypefaceCache::Remove(this); 115 INHERITED::weak_dispose(); 116 } 117 118 sk_sp<SkTypeface> onMakeClone(const SkFontArguments&) const override; 119 std::unique_ptr<SkStreamAsset> onOpenStream(int* ttcIndex) const override; 120 std::unique_ptr<SkScalerContext> onCreateScalerContext(const SkScalerContextEffects&, 121 const SkDescriptor*) const override; 122 void onFilterRec(SkScalerContextRec*) const override; 123 void getGlyphToUnicodeMap(SkUnichar* glyphToUnicode) const override; 124 std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override; 125 void onGetFontDescriptor(SkFontDescriptor*, bool*) const override; 126 void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override; 127 int onCountGlyphs() const override; 128 void getPostScriptGlyphNames(SkString*) const override; 129 int onGetUPEM() const override; 130 void onGetFamilyName(SkString* familyName) const override; 131 bool onGetPostScriptName(SkString*) const override; 132 int onGetResourceName(SkString*) const override; 133 SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override; 134 bool onGlyphMaskNeedsCurrentColor() const override; 135 int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[], 136 int coordinateCount) const override; 137 int onGetVariationDesignParameters(SkFontParameters::Variation::Axis parameters[], 138 int parameterCount) const override; 139 int onGetTableTags(SkFontTableTag tags[]) const override; 140 size_t onGetTableData(SkFontTableTag, size_t offset, size_t length, void* data) const override; 141 sk_sp<SkData> onCopyTableData(SkFontTableTag) const override; 142 143 private: 144 mutable sk_sp<Loaders> fLoaders; 145 using INHERITED = SkTypeface; 146 }; 147 148 #endif 149