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Don't use template member function in drawing sample to placate VC6.

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VC6 can't instantiate member template functions so get rid of it and use ugly
dynamic casts in the non-template function to construct wxGCDC correctly.

See #13327.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@68311 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2011-07-20 11:41:07 +00:00
parent 7a68fc9c34
commit 5707e433a3
1 changed files with 31 additions and 10 deletions
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41
samples/drawing/drawing.cpp
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@@ -149,7 +149,7 @@ public:
#if wxUSE_GRAPHICS_CONTEXT
void UseGraphicContext(bool use) { m_useContext = use; Refresh(); }
#endif
template <typename T> void Draw(T& dc);
void Draw(wxDC& dc);
protected:
enum DrawMode
@@ -1487,26 +1487,47 @@ void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime)
}
}
#if TEST_CAIRO_EVERYWHERE
extern wxGraphicsRenderer* gCairoRenderer;
#endif
void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
{
wxPaintDC pdc(this);
Draw(pdc);
}
template <typename T>
void MyCanvas::Draw(T& pdc)
void MyCanvas::Draw(wxDC& pdc)
{
#if wxUSE_GRAPHICS_CONTEXT
#if TEST_CAIRO_EVERYWHERE
wxGCDC gdc;
gdc.SetGraphicsContext( gCairoRenderer->CreateContext( pdc ) );
wxGraphicsRenderer* const renderer = wxGraphicsRenderer::
#if TEST_CAIRO_EVERYWHERE
GetCairoRenderer()
#else
wxGCDC gdc( pdc ) ;
GetDefaultRenderer()
#endif
;
wxGraphicsContext* context;
if ( wxPaintDC *paintdc = wxDynamicCast(&pdc, wxPaintDC) )
{
context = renderer->CreateContext(*paintdc);
}
else if ( wxMemoryDC *memdc = wxDynamicCast(&pdc, wxMemoryDC) )
{
context = renderer->CreateContext(*memdc);
}
#if wxUSE_METAFILE && defined(wxMETAFILE_IS_ENH)
else if ( wxMetafileDC *metadc = wxDynamicCast(&pdc, wxMetafileDC) )
{
context = renderer->CreateContext(*metadc);
}
#endif
else
{
wxFAIL_MSG( "Unknown wxDC kind" );
return;
}
gdc.SetGraphicsContext(context);
wxDC &dc = m_useContext ? (wxDC&) gdc : (wxDC&) pdc ;
#else
wxDC &dc = pdc ;