| /* |
| * 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 SkDWrite_DEFINED |
| #define SkDWrite_DEFINED |
| |
| #include "include/core/SkFontStyle.h" |
| #include "include/private/base/SkTemplates.h" |
| |
| #include <dwrite.h> |
| #include <winsdkver.h> |
| |
| class SkString; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Factory |
| |
| IDWriteFactory* sk_get_dwrite_factory(); |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // String conversion |
| |
| /** Prefer to use this type to prevent template proliferation. */ |
| typedef skia_private::AutoSTMalloc<16, WCHAR> SkSMallocWCHAR; |
| |
| /** Converts a utf8 string to a WCHAR string. */ |
| HRESULT sk_cstring_to_wchar(const char* skname, SkSMallocWCHAR* name); |
| |
| /** Converts a WCHAR string to a utf8 string. |
| * @param nameLen the number of WCHARs in the name. |
| */ |
| HRESULT sk_wchar_to_skstring(WCHAR* name, int nameLen, SkString* skname); |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Locale |
| |
| HRESULT sk_get_locale_string(IDWriteLocalizedStrings* names, const WCHAR* preferedLocale, |
| SkString* skname); |
| |
| typedef int (WINAPI *SkGetUserDefaultLocaleNameProc)(LPWSTR, int); |
| HRESULT SkGetGetUserDefaultLocaleNameProc(SkGetUserDefaultLocaleNameProc* proc); |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Table handling |
| |
| class AutoDWriteTable { |
| public: |
| AutoDWriteTable(IDWriteFontFace* fontFace, UINT32 beTag) : fExists(FALSE), fFontFace(fontFace) { |
| // Any errors are ignored, user must check fExists anyway. |
| fontFace->TryGetFontTable(beTag, |
| reinterpret_cast<const void **>(&fData), &fSize, &fLock, &fExists); |
| } |
| ~AutoDWriteTable() { |
| if (fExists) { |
| fFontFace->ReleaseFontTable(fLock); |
| } |
| } |
| |
| const uint8_t* fData; |
| UINT32 fSize; |
| BOOL fExists; |
| private: |
| // Borrowed reference, the user must ensure the fontFace stays alive. |
| IDWriteFontFace* fFontFace; |
| void* fLock; |
| }; |
| template<typename T> class AutoTDWriteTable : public AutoDWriteTable { |
| public: |
| static const UINT32 tag = DWRITE_MAKE_OPENTYPE_TAG(T::TAG0, T::TAG1, T::TAG2, T::TAG3); |
| AutoTDWriteTable(IDWriteFontFace* fontFace) : AutoDWriteTable(fontFace, tag) { } |
| |
| const T* get() const { return reinterpret_cast<const T*>(fData); } |
| const T* operator->() const { return reinterpret_cast<const T*>(fData); } |
| }; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Style conversion |
| |
| struct DWriteStyle { |
| explicit DWriteStyle(const SkFontStyle& pattern) { |
| fWeight = (DWRITE_FONT_WEIGHT)pattern.weight(); |
| fWidth = (DWRITE_FONT_STRETCH)pattern.width(); |
| switch (pattern.slant()) { |
| case SkFontStyle::kUpright_Slant: fSlant = DWRITE_FONT_STYLE_NORMAL ; break; |
| case SkFontStyle::kItalic_Slant: fSlant = DWRITE_FONT_STYLE_ITALIC ; break; |
| case SkFontStyle::kOblique_Slant: fSlant = DWRITE_FONT_STYLE_OBLIQUE; break; |
| default: SkASSERT(false); break; |
| } |
| } |
| DWRITE_FONT_WEIGHT fWeight; |
| DWRITE_FONT_STRETCH fWidth; |
| DWRITE_FONT_STYLE fSlant; |
| }; |
| |
| #endif |