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Gfx: Implement DWrite interfaces required for loading fonts

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This commit is contained in:
Birunthan Mohanathas
2013-04-12 17:05:21 +03:00
parent 8c184a3dbb
commit 3827353c08
10 changed files with 330 additions and 3 deletions
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56
Common/Gfx/Util/DWriteFontFileEnumerator.h Normal file
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/*
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_DWRITEFONTFILEENUMERATOR_H_
#define RM_GFX_UTIL_DWRITEFONTFILEENUMERATOR_H_
#include <vector>
#include <dwrite.h>
namespace Gfx {
namespace Util {
// Implements IDWriteFontFileEnumerator by enumerating over std::vector<IDWriteFontFile*>.
class DWriteFontFileEnumerator : public IDWriteFontFileEnumerator
{
public:
DWriteFontFileEnumerator(const std::vector<IDWriteFontFile*>& fontFiles);
// IUnknown
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID uuid, void** object) override;
virtual ULONG STDMETHODCALLTYPE AddRef() override;
virtual ULONG STDMETHODCALLTYPE Release() override;
// IDWriteFontFileEnumerator
virtual HRESULT STDMETHODCALLTYPE MoveNext(BOOL* hasCurrentFile) override;
virtual HRESULT STDMETHODCALLTYPE GetCurrentFontFile(IDWriteFontFile** currentFontFile) override;
private:
ULONG m_RefCount;
const std::vector<IDWriteFontFile*>& m_FontFiles;
// Current index of |m_FontFiles|. The type is int instead of size_t as it starts from -1 as
// required by IDWriteFontFileEnumerator.
int m_CurrentFontFileIndex;
};
} // namespace Util
} // namespace Gfx
#endif