LibreOffice Module canvas (master)  1
dx_surfacegraphics.cxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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18  */
19 
20 #include <sal/config.h>
21 
22 #include "dx_impltools.hxx"
23 #include "dx_surfacegraphics.hxx"
24 
25 using namespace ::com::sun::star;
26 
27 namespace dxcanvas
28 {
29  namespace
30  {
31  struct GraphicsDeleter
32  {
33  COMReference<surface_type> mpSurface;
34  HDC maHDC;
35 
36  GraphicsDeleter(const COMReference<surface_type>& rSurface, HDC hdc) :
37  mpSurface(rSurface),
38  maHDC(hdc)
39  {}
40 
41  void operator()( Gdiplus::Graphics* pGraphics )
42  {
43  if(!pGraphics)
44  return;
45 
46  pGraphics->Flush(Gdiplus::FlushIntentionSync);
47  delete pGraphics;
48 
49  if(mpSurface.is())
50  mpSurface->ReleaseDC( maHDC );
51  }
52  };
53  }
54 
56  {
57  GraphicsSharedPtr pRet;
58  HDC aHDC;
59  if( SUCCEEDED(rSurface->GetDC( &aHDC )) )
60  {
61  Gdiplus::Graphics* pGraphics = Gdiplus::Graphics::FromHDC( aHDC );
62  if(pGraphics)
63  {
64  tools::setupGraphics( *pGraphics );
65  pRet.reset(pGraphics,
66  GraphicsDeleter(rSurface, aHDC));
67  return pRet;
68  }
69  else
70  rSurface->ReleaseDC( aHDC );
71  }
72 
73  throw uno::RuntimeException();
74  }
75 }
76 
77 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
COMReference< surface_type > mpSurface
GraphicsSharedPtr createSurfaceGraphics(const COMReference< surface_type > &rSurface)
Container providing a Gdiplus::Graphics for a Surface.
HDC maHDC
void setupGraphics(Gdiplus::Graphics &rGraphics)
std::shared_ptr< Gdiplus::Graphics > GraphicsSharedPtr
Definition: dx_winstuff.hxx:61