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Moved all the coordinate system calculation to wxDCBase

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and thus removed all the duplicated code in all wxDC
   classes.
  Problematic is that wxSVGFileDC and wxPostscriptDC inherit
   from wxDC and therefore include platform specific code
   (also before this change) so I chose to override all
   SetLogicalOrigin() etc. methods in these classes and
   call their wxDCBase methods thereby circumventing the
   platform dependent code.
  I'm afraid the Mac code will require updating, too.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45752 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2007-05-02 11:05:45 +00:00
parent 1e50d914af
commit 04ab8b6ddf
27 changed files with 455 additions and 1796 deletions
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131
src/gtk/dc.cpp
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@@ -22,16 +22,6 @@ wxDC::wxDC()
{
m_ok = FALSE;
m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() /
(double)wxGetDisplaySizeMM().GetWidth();
m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() /
(double)wxGetDisplaySizeMM().GetHeight();
m_needComputeScaleX = FALSE; /* not used yet */
m_needComputeScaleY = FALSE; /* not used yet */
m_logicalFunction = wxCOPY;
m_pen = *wxBLACK_PEN;
m_font = *wxNORMAL_FONT;
m_brush = *wxWHITE_BRUSH;
@@ -65,124 +55,3 @@ wxSize wxDC::GetPPI() const
// TODO (should probably be pure virtual)
return wxSize(0, 0);
}
// ---------------------------------------------------------------------------
// set various DC parameters
// ---------------------------------------------------------------------------
wxCoord wxDC::DeviceToLogicalX(wxCoord x) const
{
return wxRound((x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
}
wxCoord wxDC::DeviceToLogicalY(wxCoord y) const
{
return wxRound((y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
}
wxCoord wxDC::DeviceToLogicalXRel(wxCoord x) const
{
return wxRound(x / m_scaleX);
}
wxCoord wxDC::DeviceToLogicalYRel(wxCoord y) const
{
return wxRound(y / m_scaleY);
}
wxCoord wxDC::LogicalToDeviceX(wxCoord x) const
{
return wxRound((x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX;
}
wxCoord wxDC::LogicalToDeviceY(wxCoord y) const
{
return wxRound((y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY;
}
wxCoord wxDC::LogicalToDeviceXRel(wxCoord x) const
{
return wxRound(x * m_scaleX);
}
wxCoord wxDC::LogicalToDeviceYRel(wxCoord y) const
{
return wxRound(y * m_scaleY);
}
void wxDC::ComputeScaleAndOrigin()
{
m_scaleX = m_logicalScaleX * m_userScaleX;
m_scaleY = m_logicalScaleY * m_userScaleY;
}
void wxDC::SetMapMode( int mode )
{
switch (mode)
{
case wxMM_TWIPS:
SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
break;
case wxMM_POINTS:
SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
break;
case wxMM_METRIC:
SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
break;
case wxMM_LOMETRIC:
SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
break;
default:
case wxMM_TEXT:
SetLogicalScale( 1.0, 1.0 );
break;
}
m_mappingMode = mode;
/* we don't do this mega optimisation
if (mode != wxMM_TEXT)
{
m_needComputeScaleX = TRUE;
m_needComputeScaleY = TRUE;
}
*/
}
void wxDC::SetUserScale( double x, double y )
{
// allow negative ? -> no
m_userScaleX = x;
m_userScaleY = y;
ComputeScaleAndOrigin();
}
void wxDC::SetLogicalScale( double x, double y )
{
// allow negative ?
m_logicalScaleX = x;
m_logicalScaleY = y;
ComputeScaleAndOrigin();
}
void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y )
{
m_logicalOriginX = x * m_signX; // is this still correct ?
m_logicalOriginY = y * m_signY;
ComputeScaleAndOrigin();
}
void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y )
{
// only wxPostScripDC has m_signX = -1, we override SetDeviceOrigin there
m_deviceOriginX = x;
m_deviceOriginY = y;
ComputeScaleAndOrigin();
}
void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
{
// only wxPostScripDC has m_signX = -1, we override SetAxisOrientation there
m_signX = (xLeftRight ? 1 : -1);
m_signY = (yBottomUp ? -1 : 1);
ComputeScaleAndOrigin();
}