/* * 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/SkTemplates.h" #include #include class SkString; //////////////////////////////////////////////////////////////////////////////// // Factory IDWriteFactory* sk_get_dwrite_factory(); //////////////////////////////////////////////////////////////////////////////// // String conversion /** Prefer to use this type to prevent template proliferation. */ typedef SkAutoSTMalloc<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(&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 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(fData); } const T* operator->() const { return reinterpret_cast(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