canvas/source/directx/dx_gdiplususer.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include <osl/mutex.hxx>
  22
  23 #include "dx_winstuff.hxx"
  24 #include "dx_gdiplususer.hxx"
  25
  26
  27 namespace dxcanvas
  28 {
  29     namespace
  30     {
  31         ::osl::Mutex*   p_gdiPlusUsageCountMutex( osl::Mutex::getGlobalMutex() );
  32         int             n_gdiPlusUsageCount( 0 );
  33
  34         ULONG_PTR       a_GdiPlusToken;     // GDI+ handle. Owned by this object
  35     }
  36
  37     GDIPlusUserSharedPtr GDIPlusUser::createInstance()
  38     {
  39         return GDIPlusUserSharedPtr( new GDIPlusUser() );
  40     }
  41
  42     GDIPlusUser::~GDIPlusUser()
  43     {
  44         ::osl::MutexGuard aGuard( *p_gdiPlusUsageCountMutex );
  45
  46         --n_gdiPlusUsageCount;
  47
  48         if( n_gdiPlusUsageCount == 0 )
  49             Gdiplus::GdiplusShutdown( a_GdiPlusToken );
  50     }
  51
  52     GDIPlusUser::GDIPlusUser()
  53     {
  54         ::osl::MutexGuard aGuard( *p_gdiPlusUsageCountMutex );
  55
  56         if( n_gdiPlusUsageCount == 0 )
  57         {
  58             // Setup GDI+
  59
  60             // No extras here, simply taking GdiplusStartupInput's
  61             // default constructor
  62             Gdiplus::GdiplusStartupInput gdiPlusStartupInput;
  63
  64             Gdiplus::GdiplusStartup( &a_GdiPlusToken,
  65                                      &gdiPlusStartupInput,
  66                                      NULL );
  67         }
  68
  69         ++n_gdiPlusUsageCount;
  70     }
  71 }
  72
  73 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */