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Add wxGraphicsRenderer::CreateContextFromUnknownDC()

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It seems wrong to have this function in wxGraphicsContext only and not
in wxGraphicsRenderer, as this makes it impossible to create a context
associated with a non-default renderer while it doesn't cost us anything
to allow doing this.
This commit is contained in:
Vadim Zeitlin
2019-02-02 21:22:19 +01:00
parent 46188ff56f
commit 8bbac921f3
3 changed files with 31 additions and 4 deletions
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13
src/common/graphcmn.cpp
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@@ -988,22 +988,27 @@ wxGraphicsBitmap wxGraphicsContext::CreateSubBitmap( const wxGraphicsBitmap &bmp
#endif
wxGraphicsContext* wxGraphicsContext::CreateFromUnknownDC(const wxDC& dc)
{
return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromUnknownDC(dc);
}
wxGraphicsContext* wxGraphicsRenderer::CreateContextFromUnknownDC(const wxDC& dc)
{
if ( const wxWindowDC *windc = wxDynamicCast(&dc, wxWindowDC) )
return Create(*windc);
return CreateContext(*windc);
if ( const wxMemoryDC *memdc = wxDynamicCast(&dc, wxMemoryDC) )
return Create(*memdc);
return CreateContext(*memdc);
#if wxUSE_PRINTING_ARCHITECTURE
if ( const wxPrinterDC *printdc = wxDynamicCast(&dc, wxPrinterDC) )
return Create(*printdc);
return CreateContext(*printdc);
#endif
#ifdef __WXMSW__
#if wxUSE_ENH_METAFILE
if ( const wxEnhMetaFileDC *mfdc = wxDynamicCast(&dc, wxEnhMetaFileDC) )
return Create(*mfdc);
return CreateContext(*mfdc);
#endif
#endif