LibreOffice Module canvas (master)  1
dx_gdiplususer.cxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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15  * License, Version 2.0 (the "License"); you may not use this file
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18  */
19 
20 #include <sal/config.h>
21 
22 #include <osl/mutex.hxx>
23 
24 #include "dx_gdiplususer.hxx"
25 #include "dx_winstuff.hxx"
26 
27 
28 namespace dxcanvas
29 {
30  namespace
31  {
32  ::osl::Mutex* p_gdiPlusUsageCountMutex( osl::Mutex::getGlobalMutex() );
33  int n_gdiPlusUsageCount( 0 );
34 
35  ULONG_PTR a_GdiPlusToken; // GDI+ handle. Owned by this object
36  }
37 
39  {
40  return GDIPlusUserSharedPtr( new GDIPlusUser() );
41  }
42 
44  {
45  ::osl::MutexGuard aGuard( *p_gdiPlusUsageCountMutex );
46 
47  --n_gdiPlusUsageCount;
48 
49  if( n_gdiPlusUsageCount == 0 )
50  Gdiplus::GdiplusShutdown( a_GdiPlusToken );
51  }
52 
54  {
55  ::osl::MutexGuard aGuard( *p_gdiPlusUsageCountMutex );
56 
57  if( n_gdiPlusUsageCount == 0 )
58  {
59  // Setup GDI+
60 
61  // No extras here, simply taking GdiplusStartupInput's
62  // default constructor
63  Gdiplus::GdiplusStartupInput gdiPlusStartupInput;
64 
65  Gdiplus::GdiplusStartup( &a_GdiPlusToken,
66  &gdiPlusStartupInput,
67  nullptr );
68  }
69 
70  ++n_gdiPlusUsageCount;
71  }
72 }
73 
74 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
std::shared_ptr< GDIPlusUser > GDIPlusUserSharedPtr
static GDIPlusUserSharedPtr createInstance()