diff --git a/src/hb-directwrite.cc b/src/hb-directwrite.cc index 9b851148b..1f00aa478 100644 --- a/src/hb-directwrite.cc +++ b/src/hb-directwrite.cc @@ -33,6 +33,13 @@ #include "hb-directwrite.h" +/* Declare object creator for dynamic support of DWRITE */ +typedef HRESULT (* WINAPI t_DWriteCreateFactory)( + DWRITE_FACTORY_TYPE factoryType, + REFIID iid, + IUnknown **factory +); + /* * hb-directwrite uses new/delete syntatically but as we let users * to override malloc/free, we will redefine new/delete so users @@ -138,6 +145,7 @@ public: struct hb_directwrite_face_data_t { + HMODULE dwrite_dll; IDWriteFactory *dwriteFactory; IDWriteFontFile *fontFile; DWriteFontFileStream *fontFileStream; @@ -153,12 +161,33 @@ _hb_directwrite_shaper_face_data_create (hb_face_t *face) if (unlikely (!data)) return nullptr; - // TODO: factory and fontFileLoader should be cached separately - IDWriteFactory* dwriteFactory; - DWriteCreateFactory (DWRITE_FACTORY_TYPE_SHARED, __uuidof (IDWriteFactory), - (IUnknown**) &dwriteFactory); +#define FAIL(...) \ + HB_STMT_START { \ + DEBUG_MSG (DIRECTWRITE, nullptr, __VA_ARGS__); \ + return nullptr; \ + } HB_STMT_END + + data->dwrite_dll = LoadLibrary(TEXT("DWRITE")); + if (data->dwrite_dll == NULL) + FAIL ("Cannot find DWrite.DLL"); + + t_DWriteCreateFactory p_DWriteCreateFactory; + + p_DWriteCreateFactory = (t_DWriteCreateFactory) + GetProcAddress(data->dwrite_dll, "DWriteCreateFactory"); + if (p_DWriteCreateFactory == NULL) + FAIL ("Cannot find DWriteCreateFactory()."); HRESULT hr; + + // TODO: factory and fontFileLoader should be cached separately + IDWriteFactory* dwriteFactory; + hr = p_DWriteCreateFactory (DWRITE_FACTORY_TYPE_SHARED, __uuidof (IDWriteFactory), + (IUnknown**) &dwriteFactory); + + if (hr != S_OK) + FAIL ("Failed to run DWriteCreateFactory()."); + hb_blob_t *blob = hb_face_reference_blob (face); DWriteFontFileStream *fontFileStream; fontFileStream = new DWriteFontFileStream ((uint8_t *) hb_blob_get_data (blob, nullptr), @@ -172,12 +201,6 @@ _hb_directwrite_shaper_face_data_create (hb_face_t *face) hr = dwriteFactory->CreateCustomFontFileReference (&fontFileKey, sizeof (fontFileKey), fontFileLoader, &fontFile); -#define FAIL(...) \ - HB_STMT_START { \ - DEBUG_MSG (DIRECTWRITE, nullptr, __VA_ARGS__); \ - return nullptr; \ - } HB_STMT_END - if (FAILED (hr)) FAIL ("Failed to load font file from data!"); @@ -224,6 +247,8 @@ _hb_directwrite_shaper_face_data_destroy (hb_directwrite_face_data_t *data) delete data->fontFileStream; if (data->faceBlob) hb_blob_destroy (data->faceBlob); + if (data->dwrite_dll != NULL) + FreeLibrary(data->dwrite_dll); if (data) delete data; }