rainmeter-studio/Common/Gfx/Util/DWriteFontCollectionLoader.h
2013-04-12 17:05:21 +03:00

53 lines
1.9 KiB
C++

/*
Copyright (C) 2013 Birunthan Mohanathas
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef RM_GFX_UTIL_DWRITEFONTCOLLECTIONLOADER_H_
#define RM_GFX_UTIL_DWRITEFONTCOLLECTIONLOADER_H_
#include <dwrite.h>
namespace Gfx {
namespace Util {
// Implements the IDWriteFontCollectionLoader interface as a singleton object. When
// CreateEnumeratorFromKey is called, a new DWriteFontFileEnumerator object is created using
// |fontCollectionKey| (which is assumed to be a pointer to std::vector<IDWriteFontFile*>).
class DWriteFontCollectionLoader : public IDWriteFontCollectionLoader
{
public:
static DWriteFontCollectionLoader* GetInstance();
// IUnknown
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID uuid, void** object) override;
virtual ULONG STDMETHODCALLTYPE AddRef() override;
virtual ULONG STDMETHODCALLTYPE Release() override;
// IFontCollectionLoader
virtual HRESULT STDMETHODCALLTYPE CreateEnumeratorFromKey(
IDWriteFactory* factory, void const* fontCollectionKey, UINT32 fontCollectionKeySize,
IDWriteFontFileEnumerator** fontFileEnumerator) override;
private:
DWriteFontCollectionLoader() {}
DWriteFontCollectionLoader(const DWriteFontCollectionLoader& other) {}
};
} // namespace Util
} // namespace Gfx
#endif