| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkTypeface_win_dw_DEFINED |
| #define SkTypeface_win_dw_DEFINED |
| |
| #include "SkAdvancedTypefaceMetrics.h" |
| #include "SkDWrite.h" |
| #include "SkHRESULT.h" |
| #include "SkTScopedComPtr.h" |
| #include "SkTypeface.h" |
| #include "SkTypefaceCache.h" |
| #include "SkTypes.h" |
| |
| #include <dwrite.h> |
| #if SK_HAS_DWRITE_1_H |
| # include <dwrite_1.h> |
| #endif |
| |
| class SkFontDescriptor; |
| struct SkScalerContextRec; |
| |
| static SkFontStyle get_style(IDWriteFont* font) { |
| DWRITE_FONT_STYLE dwStyle = font->GetStyle(); |
| return SkFontStyle(font->GetWeight(), |
| font->GetStretch(), |
| (DWRITE_FONT_STYLE_OBLIQUE == dwStyle || |
| DWRITE_FONT_STYLE_ITALIC == dwStyle) |
| ? SkFontStyle::kItalic_Slant |
| : SkFontStyle::kUpright_Slant); |
| } |
| |
| class DWriteFontTypeface : public SkTypeface { |
| private: |
| DWriteFontTypeface(const SkFontStyle& style, SkFontID fontID, |
| IDWriteFactory* factory, |
| IDWriteFontFace* fontFace, |
| IDWriteFont* font, |
| IDWriteFontFamily* fontFamily, |
| IDWriteFontFileLoader* fontFileLoader = NULL, |
| IDWriteFontCollectionLoader* fontCollectionLoader = NULL) |
| : SkTypeface(style, fontID, false) |
| , fFactory(SkRefComPtr(factory)) |
| , fDWriteFontCollectionLoader(SkSafeRefComPtr(fontCollectionLoader)) |
| , fDWriteFontFileLoader(SkSafeRefComPtr(fontFileLoader)) |
| , fDWriteFontFamily(SkRefComPtr(fontFamily)) |
| , fDWriteFont(SkRefComPtr(font)) |
| , fDWriteFontFace(SkRefComPtr(fontFace)) |
| { |
| #if SK_HAS_DWRITE_1_H |
| if (!SUCCEEDED(fDWriteFontFace->QueryInterface(&fDWriteFontFace1))) { |
| // IUnknown::QueryInterface states that if it fails, punk will be set to NULL. |
| // http://blogs.msdn.com/b/oldnewthing/archive/2004/03/26/96777.aspx |
| SK_ALWAYSBREAK(NULL == fDWriteFontFace1.get()); |
| } |
| #endif |
| } |
| |
| public: |
| SkTScopedComPtr<IDWriteFactory> fFactory; |
| SkTScopedComPtr<IDWriteFontCollectionLoader> fDWriteFontCollectionLoader; |
| SkTScopedComPtr<IDWriteFontFileLoader> fDWriteFontFileLoader; |
| SkTScopedComPtr<IDWriteFontFamily> fDWriteFontFamily; |
| SkTScopedComPtr<IDWriteFont> fDWriteFont; |
| SkTScopedComPtr<IDWriteFontFace> fDWriteFontFace; |
| #if SK_HAS_DWRITE_1_H |
| SkTScopedComPtr<IDWriteFontFace1> fDWriteFontFace1; |
| #endif |
| |
| static DWriteFontTypeface* Create(IDWriteFactory* factory, |
| IDWriteFontFace* fontFace, |
| IDWriteFont* font, |
| IDWriteFontFamily* fontFamily, |
| IDWriteFontFileLoader* fontFileLoader = NULL, |
| IDWriteFontCollectionLoader* fontCollectionLoader = NULL) { |
| SkFontID fontID = SkTypefaceCache::NewFontID(); |
| return SkNEW_ARGS(DWriteFontTypeface, (get_style(font), fontID, |
| factory, fontFace, font, fontFamily, |
| fontFileLoader, fontCollectionLoader)); |
| } |
| |
| protected: |
| void weak_dispose() const override { |
| if (fDWriteFontCollectionLoader.get()) { |
| HRV(fFactory->UnregisterFontCollectionLoader(fDWriteFontCollectionLoader.get())); |
| } |
| if (fDWriteFontFileLoader.get()) { |
| HRV(fFactory->UnregisterFontFileLoader(fDWriteFontFileLoader.get())); |
| } |
| |
| //SkTypefaceCache::Remove(this); |
| INHERITED::weak_dispose(); |
| } |
| |
| SkStreamAsset* onOpenStream(int* ttcIndex) const override; |
| SkScalerContext* onCreateScalerContext(const SkDescriptor*) const override; |
| void onFilterRec(SkScalerContextRec*) const override; |
| SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics( |
| PerGlyphInfo, const uint32_t*, uint32_t) const override; |
| void onGetFontDescriptor(SkFontDescriptor*, bool*) const override; |
| virtual int onCharsToGlyphs(const void* chars, Encoding encoding, |
| uint16_t glyphs[], int glyphCount) const override; |
| int onCountGlyphs() const override; |
| int onGetUPEM() const override; |
| void onGetFamilyName(SkString* familyName) const override; |
| SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override; |
| int onGetTableTags(SkFontTableTag tags[]) const override; |
| virtual size_t onGetTableData(SkFontTableTag, size_t offset, |
| size_t length, void* data) const override; |
| |
| private: |
| typedef SkTypeface INHERITED; |
| }; |
| |
| #endif |