/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef GFX_DWRITECOMMON_H #define GFX_DWRITECOMMON_H // Mozilla includes #include "nscore.h" #include "nsIServiceManager.h" #include "nsCOMPtr.h" #include "cairo-features.h" #include "gfxFontConstants.h" #include "nsTArray.h" #include "gfxWindowsPlatform.h" #include "nsIUUIDGenerator.h" #include <windows.h> #include <dwrite.h> static inline DWRITE_FONT_STRETCH DWriteFontStretchFromStretch(int16_t aStretch) { switch (aStretch) { case NS_FONT_STRETCH_ULTRA_CONDENSED: return DWRITE_FONT_STRETCH_ULTRA_CONDENSED; case NS_FONT_STRETCH_EXTRA_CONDENSED: return DWRITE_FONT_STRETCH_EXTRA_CONDENSED; case NS_FONT_STRETCH_CONDENSED: return DWRITE_FONT_STRETCH_CONDENSED; case NS_FONT_STRETCH_SEMI_CONDENSED: return DWRITE_FONT_STRETCH_SEMI_CONDENSED; case NS_FONT_STRETCH_NORMAL: return DWRITE_FONT_STRETCH_NORMAL; case NS_FONT_STRETCH_SEMI_EXPANDED: return DWRITE_FONT_STRETCH_SEMI_EXPANDED; case NS_FONT_STRETCH_EXPANDED: return DWRITE_FONT_STRETCH_EXPANDED; case NS_FONT_STRETCH_EXTRA_EXPANDED: return DWRITE_FONT_STRETCH_EXTRA_EXPANDED; case NS_FONT_STRETCH_ULTRA_EXPANDED: return DWRITE_FONT_STRETCH_ULTRA_EXPANDED; default: return DWRITE_FONT_STRETCH_UNDEFINED; } } static inline int16_t FontStretchFromDWriteStretch(DWRITE_FONT_STRETCH aStretch) { switch (aStretch) { case DWRITE_FONT_STRETCH_ULTRA_CONDENSED: return NS_FONT_STRETCH_ULTRA_CONDENSED; case DWRITE_FONT_STRETCH_EXTRA_CONDENSED: return NS_FONT_STRETCH_EXTRA_CONDENSED; case DWRITE_FONT_STRETCH_CONDENSED: return NS_FONT_STRETCH_CONDENSED; case DWRITE_FONT_STRETCH_SEMI_CONDENSED: return NS_FONT_STRETCH_SEMI_CONDENSED; case DWRITE_FONT_STRETCH_NORMAL: return NS_FONT_STRETCH_NORMAL; case DWRITE_FONT_STRETCH_SEMI_EXPANDED: return NS_FONT_STRETCH_SEMI_EXPANDED; case DWRITE_FONT_STRETCH_EXPANDED: return NS_FONT_STRETCH_EXPANDED; case DWRITE_FONT_STRETCH_EXTRA_EXPANDED: return NS_FONT_STRETCH_EXTRA_EXPANDED; case DWRITE_FONT_STRETCH_ULTRA_EXPANDED: return NS_FONT_STRETCH_ULTRA_EXPANDED; default: return NS_FONT_STRETCH_NORMAL; } } struct ffReferenceKey { FallibleTArray<uint8_t> *mArray; nsID mGUID; }; class gfxDWriteFontFileLoader : public IDWriteFontFileLoader { public: gfxDWriteFontFileLoader() { } // IUnknown interface IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject) { if (iid == __uuidof(IDWriteFontFileLoader)) { *ppObject = static_cast<IDWriteFontFileLoader*>(this); return S_OK; } else if (iid == __uuidof(IUnknown)) { *ppObject = static_cast<IUnknown*>(this); return S_OK; } else { return E_NOINTERFACE; } } IFACEMETHOD_(ULONG, AddRef)() { return 1; } IFACEMETHOD_(ULONG, Release)() { return 1; } // IDWriteFontFileLoader methods /** * Important! Note the key here -has- to be a pointer to a uint64_t. */ virtual HRESULT STDMETHODCALLTYPE CreateStreamFromKey(void const* fontFileReferenceKey, UINT32 fontFileReferenceKeySize, OUT IDWriteFontFileStream** fontFileStream); /** * Gets the singleton loader instance. Note that when using this font * loader, the key must be a pointer to a unint64_t. */ static IDWriteFontFileLoader* Instance() { if (!mInstance) { mInstance = new gfxDWriteFontFileLoader(); gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()-> RegisterFontFileLoader(mInstance); } return mInstance; } /** * Creates a IDWriteFontFile and IDWriteFontFileStream from aFontData. * aFontData will be empty on return as it swaps out the data. * * @param aFontData the font data for the custom font file * @param aFontFile out param for the created font file * @param aFontFileStream out param for the corresponding stream * @return HRESULT of internal calls */ static HRESULT CreateCustomFontFile(FallibleTArray<uint8_t>& aFontData, IDWriteFontFile** aFontFile, IDWriteFontFileStream** aFontFileStream); private: static IDWriteFontFileLoader* mInstance; }; #endif /* GFX_DWRITECOMMON_H */