/usr/include/podofo/doc/PdfFontConfigWrapper.h is in libpodofo-dev 0.9.4-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2011 by Dominik Seichter *
* domseichter@web.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library 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 Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* In addition, as a special exception, the copyright holders give *
* permission to link the code of portions of this program with the *
* OpenSSL library under certain conditions as described in each *
* individual source file, and distribute linked combinations *
* including the two. *
* You must obey the GNU General Public License in all respects *
* for all of the code used other than OpenSSL. If you modify *
* file(s) with this exception, you may extend this exception to your *
* version of the file(s), but you are not obligated to do so. If you *
* do not wish to do so, delete this exception statement from your *
* version. If you delete this exception statement from all source *
* files in the program, then also delete it here. *
***************************************************************************/
#ifndef _PDF_FONT_CONFIG_WRAPPER_H_
#define _PDF_FONT_CONFIG_WRAPPER_H_
#include "podofo/base/PdfDefines.h"
#include "podofo/base/Pdf3rdPtyForwardDecl.h"
#include "podofo/base/util/PdfMutex.h"
namespace PoDoFo {
/**
* This class initializes and destroys the FontConfig library.
*
* As initializing fontconfig can take a long time, you
* can create a wrapper by yourself to cache initialization of
* fontconfig.
*
* This class is reference counted. The last user of the fontconfig library
* will destroy the fontconfig handle.
*
* The fontconfig library is initialized on first used (lazy loading!)
*/
class PODOFO_DOC_API PdfFontConfigWrapper {
public:
/**
* Create a new FontConfigWrapper and initialize the fontconfig library.
*/
PdfFontConfigWrapper();
/**
* Copy an existing PdfFontConfigWrapper
*/
PdfFontConfigWrapper(const PdfFontConfigWrapper & rhs);
~PdfFontConfigWrapper();
/**
* Get access to the internal fontconfig handle.
* Accesses to this handle have to be synchronized using a mutex!
*
* \see GetFontConfigMutex
*
* \returns a FcConfig handle (you can cast to FcConfig)
*/
inline void * GetFontConfig();
#if defined(PODOFO_HAVE_FONTCONFIG)
/**
* Mutex which has to be used to synchronize uses of FontConfig
*/
inline Util::PdfMutex & GetFontConfigMutex();
#endif
const PdfFontConfigWrapper & operator=(const PdfFontConfigWrapper & rhs);
private:
/**
* Destroy fontconfig reference if reference count is 0
*/
void DerefBuffer();
/**
* Do the lazy initialization of fontconfig
*/
void InitializeFontConfig();
private:
#if defined(PODOFO_HAVE_FONTCONFIG)
static Util::PdfMutex m_FcMutex;
#endif
struct TRefCountedFontConfig {
void* m_pFcConfig; ///< Handle to fontconfig on unix systems
long m_lRefCount;
bool m_bInitialized; ///< Is fontconfig initialized yet?
};
TRefCountedFontConfig* m_pFontConfig;
};
// -----------------------------------------------------
//
// -----------------------------------------------------
void* PdfFontConfigWrapper::GetFontConfig()
{
if( m_pFontConfig != NULL )
{
InitializeFontConfig();
return m_pFontConfig->m_pFcConfig;
}
else
{
return NULL;
}
}
#if defined(PODOFO_HAVE_FONTCONFIG)
// -----------------------------------------------------
//
// -----------------------------------------------------
Util::PdfMutex & PdfFontConfigWrapper::GetFontConfigMutex()
{
return m_FcMutex;
}
#endif
}; // PoDoFo
#endif // _PDF_FONT_WRAPPER_H_
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