include/wx/motif/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.h
   3 // Purpose:     wxDC class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DC_H_
  13 #define _WX_DC_H_
  14
  15 #include "wx/pen.h"
  16 #include "wx/brush.h"
  17 #include "wx/icon.h"
  18 #include "wx/font.h"
  19 #include "wx/gdicmn.h"
  20
  21 //-----------------------------------------------------------------------------
  22 // constants
  23 //-----------------------------------------------------------------------------
  24
  25 #ifndef MM_TEXT
  26 #define MM_TEXT         0
  27 #define MM_ISOTROPIC    1
  28 #define MM_ANISOTROPIC  2
  29 #define MM_LOMETRIC     3
  30 #define MM_HIMETRIC     4
  31 #define MM_TWIPS        5
  32 #define MM_POINTS       6
  33 #define MM_METRIC       7
  34 #endif
  35
  36 //-----------------------------------------------------------------------------
  37 // wxDC
  38 //-----------------------------------------------------------------------------
  39
  40 class WXDLLEXPORT wxDC : public wxDCBase
  41 {
  42     DECLARE_DYNAMIC_CLASS(wxDC)
  43
  44 public:
  45     wxDC();
  46     ~wxDC() { }
  47
  48     // implement base class pure virtuals
  49     // ----------------------------------
  50
  51     virtual wxSize GetPPI() const;
  52
  53     virtual void SetMapMode(int mode);
  54     virtual void SetUserScale(double x, double y);
  55     virtual void SetLogicalScale(double x, double y);
  56     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
  57     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
  58     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
  59
  60 protected:
  61     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
  62     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
  63         bool useMask = false);
  64
  65     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
  66         wxCoord width, wxCoord height);
  67     virtual void DoGetSize(int *width, int *height) const;
  68     virtual void DoGetSizeMM(int* width, int* height) const;
  69
  70 public:
  71     virtual void ComputeScaleAndOrigin();
  72
  73     wxCoord XDEV2LOG(wxCoord x) const
  74     {
  75         wxCoord new_x = x - m_deviceOriginX;
  76         if (new_x > 0)
  77             return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
  78         else
  79             return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
  80     }
  81     wxCoord XDEV2LOGREL(wxCoord x) const
  82     {
  83         if (x > 0)
  84             return (wxCoord)((double)(x) / m_scaleX + 0.5);
  85         else
  86             return (wxCoord)((double)(x) / m_scaleX - 0.5);
  87     }
  88     wxCoord YDEV2LOG(wxCoord y) const
  89     {
  90         wxCoord new_y = y - m_deviceOriginY;
  91         if (new_y > 0)
  92             return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
  93         else
  94             return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
  95     }
  96     wxCoord YDEV2LOGREL(wxCoord y) const
  97     {
  98         if (y > 0)
  99             return (wxCoord)((double)(y) / m_scaleY + 0.5);
 100         else
 101             return (wxCoord)((double)(y) / m_scaleY - 0.5);
 102     }
 103     wxCoord XLOG2DEV(wxCoord x) const
 104     {
 105         wxCoord new_x = x - m_logicalOriginX;
 106         if (new_x > 0)
 107             return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
 108         else
 109             return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
 110     }
 111     // Without device translation, for backing pixmap purposes
 112     wxCoord XLOG2DEV_2(wxCoord x) const
 113     {
 114         wxCoord new_x = x - m_logicalOriginX;
 115         if (new_x > 0)
 116             return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX;
 117         else
 118             return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX;
 119     }
 120     wxCoord XLOG2DEVREL(wxCoord x) const
 121     {
 122         if (x > 0)
 123             return (wxCoord)((double)(x) * m_scaleX + 0.5);
 124         else
 125             return (wxCoord)((double)(x) * m_scaleX - 0.5);
 126     }
 127     wxCoord YLOG2DEV(wxCoord y) const
 128     {
 129         wxCoord new_y = y - m_logicalOriginY;
 130         if (new_y > 0)
 131             return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
 132         else
 133             return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
 134     }
 135     // Without device translation, for backing pixmap purposes
 136     wxCoord YLOG2DEV_2(wxCoord y) const
 137     {
 138         wxCoord new_y = y - m_logicalOriginY;
 139         if (new_y > 0)
 140             return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY;
 141         else
 142             return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY;
 143     }
 144     wxCoord YLOG2DEVREL(wxCoord y) const
 145     {
 146         if (y > 0)
 147             return (wxCoord)((double)(y) * m_scaleY + 0.5);
 148         else
 149             return (wxCoord)((double)(y) * m_scaleY - 0.5);
 150     }
 151
 152 public:
 153     // not sure what for, but what is a mm on a screen you don't know the size of?
 154     double       m_mm_to_pix_x,m_mm_to_pix_y;
 155
 156     // recompute scale?
 157     bool         m_needComputeScaleX, m_needComputeScaleY;
 158
 159 };
 160
 161 #endif
 162 // _WX_DC_H_