void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap )
{
if ( m_selected.IsOk() )
{
m_selected.EndRawAccess() ;
wxDELETE(m_graphicContext);
}
m_selected = bitmap;
if (m_selected.IsOk())
{
if ( m_selected.GetDepth() != 1 )
m_selected.UseAlpha() ;
m_selected.BeginRawAccess() ;
m_width = bitmap.GetScaledWidth();
m_height = bitmap.GetScaledHeight();
m_contentScaleFactor = bitmap.GetScaleFactor();
CGColorSpaceRef genericColorSpace = wxMacGetGenericRGBColorSpace();
CGContextRef bmCtx = (CGContextRef) m_selected.GetHBITMAP();
if ( bmCtx )
{
CGContextSetFillColorSpace( bmCtx, genericColorSpace );
CGContextSetStrokeColorSpace( bmCtx, genericColorSpace );
SetGraphicsContext( wxGraphicsContext::CreateFromNative( bmCtx ) );
}
m_ok = (m_graphicContext != NULL) ;
}
else
{
m_ok = false;
}
}
static wxBitmap ConvertToDisabled(const wxBitmap& bmp)
{
#if wxVERSION_NUMBER >= 3100 && !defined(__WXMSW__)
// Convert the image to disabled
// It seems that m_bitmap.ConvertToDisabled() looses the scale
// factor, so use this kind of conversion
wxImage img = bmp.ConvertToImage();
img = img.ConvertToDisabled();
// Keep the original m_bitmap scale factor
wxBitmap disabledBmp = wxBitmap(img, -1, bmp.GetScaleFactor());
return disabledBmp;
#else
return bmp.ConvertToDisabled();
#endif
}
wxBitmap CreateDisabledButtonBitmap(const wxBitmap& original)
{
wxImage image = original.ConvertToImage();
return wxBitmap(image.ConvertToDisabled(240), wxBITMAP_SCREEN_DEPTH, original.GetScaleFactor());
}