wxWidgets/include/wx/gtk1/dc.h
Robert Roebling 238d735dc2 Got a new idea to do cursors, including global
ones and busy etc.
  Fixed an assert in UserScaler from PS code.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2577 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1999-05-26 20:40:04 +00:00

157 lines
4.6 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: dc.h
// Purpose:
// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef __GTKDCH__
#define __GTKDCH__
#ifdef __GNUG__
#pragma interface
#endif
//-----------------------------------------------------------------------------
// classes
//-----------------------------------------------------------------------------
class wxDC;
//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------
#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
//-----------------------------------------------------------------------------
// wxDC
//-----------------------------------------------------------------------------
class wxDC : public wxDCBase
{
DECLARE_ABSTRACT_CLASS(wxDC)
public:
wxDC();
~wxDC() { }
void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
// the first two must be overridden and called
virtual void DestroyClippingRegion();
// 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( long x, long y );
virtual void SetDeviceOrigin( long x, long y );
virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
// implementation
// --------------
virtual void ComputeScaleAndOrigin();
long XDEV2LOG(long x) const
{
long new_x = x - m_deviceOriginX;
if (new_x > 0)
return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
else
return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
}
long XDEV2LOGREL(long x) const
{
if (x > 0)
return (long)((double)(x) / m_scaleX + 0.5);
else
return (long)((double)(x) / m_scaleX - 0.5);
}
long YDEV2LOG(long y) const
{
long new_y = y - m_deviceOriginY;
if (new_y > 0)
return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
else
return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
}
long YDEV2LOGREL(long y) const
{
if (y > 0)
return (long)((double)(y) / m_scaleY + 0.5);
else
return (long)((double)(y) / m_scaleY - 0.5);
}
long XLOG2DEV(long x) const
{
long new_x = x - m_logicalOriginX;
if (new_x > 0)
return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
else
return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
}
long XLOG2DEVREL(long x) const
{
if (x > 0)
return (long)((double)(x) * m_scaleX + 0.5);
else
return (long)((double)(x) * m_scaleX - 0.5);
}
long YLOG2DEV(long y) const
{
long new_y = y - m_logicalOriginY;
if (new_y > 0)
return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
else
return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
}
long YLOG2DEVREL(long y) const
{
if (y > 0)
return (long)((double)(y) * m_scaleY + 0.5);
else
return (long)((double)(y) * m_scaleY - 0.5);
}
protected:
// base class pure virtuals implemented here
virtual void DoSetClippingRegion(long x, long y, long width, long height);
virtual void DoGetSize(int *width, int *height) const;
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
float m_scaleFactor; // wxPSDC wants to have this. Will disappear.
};
#endif // __GTKDCH__