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/////////////////////////////////////////////////////////////////////////////
// Name: wx/gtk1/dc.h
// Purpose:
// Author: Robert Roebling
// Id: $Id: dc.h 42763 2006-10-30 20:34:25Z VZ $
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef __GTKDCH__
#define __GTKDCH__
//-----------------------------------------------------------------------------
// classes
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxDC;
//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------
#ifndef MM_TEXT
#define MM_TEXT 0
#define MM_ISOTROPIC 1
#define MM_ANISOTROPIC 2
#define MM_LOMETRIC 3
#define MM_HIMETRIC 4
#define MM_TWIPS 5
#define MM_POINTS 6
#define MM_METRIC 7
#endif
//-----------------------------------------------------------------------------
// wxDC
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxDC : public wxDCBase
{
public:
wxDC();
virtual ~wxDC() { }
#if wxUSE_PALETTE
void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
#endif // wxUSE_PALETTE
// Resolution in pixels per logical inch
virtual wxSize GetPPI() const;
virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
virtual void EndDoc() { }
virtual void StartPage() { }
virtual void EndPage() { }
virtual void SetMapMode( int mode );
virtual void SetUserScale( double x, double y );
virtual void SetLogicalScale( double x, double y );
virtual void SetLogicalOrigin( wxCoord x, wxCoord y );
virtual void SetDeviceOrigin( wxCoord x, wxCoord y );
virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
// implementation
// --------------
virtual void ComputeScaleAndOrigin();
virtual GdkWindow* GetGDKWindow() const { return NULL; }
wxCoord XDEV2LOG(wxCoord x) const
{
return wxRound((double)(x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
}
wxCoord XDEV2LOGREL(wxCoord x) const
{
return wxRound((double)(x) / m_scaleX);
}
wxCoord YDEV2LOG(wxCoord y) const
{
return wxRound((double)(y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
}
wxCoord YDEV2LOGREL(wxCoord y) const
{
return wxRound((double)(y) / m_scaleY);
}
wxCoord XLOG2DEV(wxCoord x) const
{
return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX;
}
wxCoord XLOG2DEVREL(wxCoord x) const
{
return wxRound((double)(x) * m_scaleX);
}
wxCoord YLOG2DEV(wxCoord y) const
{
return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY;
}
wxCoord YLOG2DEVREL(wxCoord y) const
{
return wxRound((double)(y) * m_scaleY);
}
protected:
// base class pure virtuals implemented here
virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
virtual void DoGetSizeMM(int* width, int* height) const;
public:
// GTK-specific member variables
// not sure what for, but what is a mm on a screen you don't know the size
// of?
double m_mm_to_pix_x,
m_mm_to_pix_y;
bool m_needComputeScaleX,
m_needComputeScaleY; // not yet used
private:
DECLARE_ABSTRACT_CLASS(wxDC)
};
// this must be defined when wxDC::Blit() honours the DC origian and needed to
// allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK
// 2.3.[23]
#ifndef wxHAS_WORKING_GTK_DC_BLIT
#define wxHAS_WORKING_GTK_DC_BLIT
#endif
#endif // __GTKDCH__
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