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allowing transformation changes even if there is no graphics context around

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43011 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
2006-11-04 06:39:50 +00:00
parent 6e25bf0ffb
commit fd7915711f
1 changed files with 12 additions and 7 deletions
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19
src/common/dcgraph.cpp
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@@ -69,6 +69,8 @@ void wxGCDC::SetGraphicsContext( wxGraphicsContext* ctx )
{ {
m_matrixOriginal = m_graphicContext->GetTransform(); m_matrixOriginal = m_graphicContext->GetTransform();
m_ok = true; m_ok = true;
// apply the stored transformations to the passed in context
ComputeScaleAndOrigin();
} }
} }
@@ -309,14 +311,17 @@ void wxGCDC::ComputeScaleAndOrigin()
m_scaleX = m_logicalScaleX * m_userScaleX; m_scaleX = m_logicalScaleX * m_userScaleX;
m_scaleY = m_logicalScaleY * m_userScaleY; m_scaleY = m_logicalScaleY * m_userScaleY;
m_matrixCurrent = m_graphicContext->CreateMatrix(); if ( m_graphicContext )
m_matrixCurrent.Translate( m_deviceOriginX, m_deviceOriginY ); {
m_matrixCurrent.Scale( m_scaleX, m_scaleY ); m_matrixCurrent = m_graphicContext->CreateMatrix();
// the logical origin sets the origin to have new coordinates m_matrixCurrent.Translate( m_deviceOriginX, m_deviceOriginY );
m_matrixCurrent.Translate( -m_logicalOriginX, -m_logicalOriginY ); m_matrixCurrent.Scale( m_scaleX, m_scaleY );
// the logical origin sets the origin to have new coordinates
m_matrixCurrent.Translate( -m_logicalOriginX, -m_logicalOriginY );
m_graphicContext->SetTransform( m_matrixOriginal ); m_graphicContext->SetTransform( m_matrixOriginal );
m_graphicContext->ConcatTransform( m_matrixCurrent ); m_graphicContext->ConcatTransform( m_matrixCurrent );
}
} }
void wxGCDC::SetPalette( const wxPalette& WXUNUSED(palette) ) void wxGCDC::SetPalette( const wxPalette& WXUNUSED(palette) )