include/wx/os2/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.h
   3 // Purpose:     wxDC class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     08/26/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DC_H_
  13 #define _WX_DC_H_
  14
  15 #ifdef __GNUG__
  16 #pragma interface "dc.h"
  17 #endif
  18
  19 #include "wx/window.h"
  20 #include "wx/pen.h"
  21 #include "wx/brush.h"
  22 #include "wx/icon.h"
  23 #include "wx/font.h"
  24 #include "wx/gdicmn.h"
  25
  26 //-----------------------------------------------------------------------------
  27 // constants
  28 //-----------------------------------------------------------------------------
  29
  30 #ifndef MM_TEXT
  31 #define MM_TEXT               0
  32 #define MM_ISOTROPIC          1
  33 #define MM_ANISOTROPIC        2
  34 #define MM_LOMETRIC           3
  35 #define MM_HIMETRIC           4
  36 #define MM_TWIPS              5
  37 #define MM_POINTS             6
  38 #define MM_METRIC             7
  39 #endif
  40
  41 //-----------------------------------------------------------------------------
  42 // global variables
  43 //-----------------------------------------------------------------------------
  44
  45 extern int wxPageNumber;
  46
  47 //-----------------------------------------------------------------------------
  48 // wxDC
  49 //-----------------------------------------------------------------------------
  50
  51 class WXDLLEXPORT wxDC: public wxDCBase
  52 {
  53   DECLARE_ABSTRACT_CLASS(wxDC)
  54
  55   public:
  56
  57     wxDC(void);
  58     ~wxDC(void);
  59
  60     virtual void BeginDrawing(void) { };
  61     virtual void EndDrawing(void) { };
  62
  63 //-----------------------------------------------------------------------------
  64 // Pure virtuals from wxDCBase that need defining
  65 //-----------------------------------------------------------------------------
  66     virtual bool   CanDrawBitmap(void) const { return TRUE; };
  67     virtual bool   CanGetTextExtent(void) const { return TRUE; };
  68     virtual int    GetDepth(void) const;
  69     virtual wxSize GetPPI(void) const;
  70     virtual void   GetTextExtent( const wxString& string
  71                                  ,long*           width
  72                                  ,long*           height
  73                                  ,long*           descent = NULL
  74                                  ,long*           externalLeading = NULL
  75                                  ,wxFont*         theFont = NULL
  76                                 ) const;
  77     virtual long   GetCharWidth(void) const;
  78     virtual long   GetCharHeight(void) const;
  79     virtual void   Clear(void);
  80     virtual void   SetFont(const wxFont& font);
  81     virtual void   SetPen(const wxPen& pen);
  82     virtual void   SetBrush(const wxBrush& brush);
  83     virtual void   SetBackground(const wxBrush& brush);
  84     virtual void   SetLogicalFunction(int function);
  85     virtual void   SetBackgroundMode(int mode);
  86     virtual void   SetPalette(const wxPalette& palette);
  87     virtual void   SetMapMode(int mode);
  88     virtual void   DestroyClippingRegion(void);
  89     virtual void   SetUserScale(double x, double y);
  90     virtual void   SetLogicalOrigin(long x, long y);
  91     virtual void   SetDeviceOrigin(long x, long y);
  92     virtual void   SetAxisOrientation(bool xLeftRight, bool yBottomUp);
  93
  94     virtual void   DoFloodFill( long x
  95                                ,long y
  96                                ,const wxColour& col
  97                                ,int style = wxFLOOD_SURFACE
  98                               );
  99     virtual bool   DoGetPixel(long x, long y, wxColour *col) const;
 100     virtual void   DoDrawPoint(long x, long y);
 101     virtual void   DoDrawLine(long x1, long y1, long x2, long y2);
 102     virtual void   DoDrawArc(long x1, long y1,
 103                              long x2, long y2,
 104                              long xc, long yc
 105                             );
 106     virtual void   DoDrawEllipticArc( long x, long y
 107                                      ,long w, long h
 108                                      ,double sa, double ea
 109                                     );
 110     virtual void   DoDrawRectangle(long x, long y, long width, long height);
 111     virtual void   DoDrawRoundedRectangle( long x, long y
 112                                           ,long width, long height
 113                                           ,double radius
 114                                          );
 115     virtual void   DoDrawEllipse(long x, long y, long width, long height);
 116     virtual void   DoCrossHair(long x, long y);
 117     virtual void   DoDrawIcon(const wxIcon& icon, long x, long y);
 118     virtual void   DoDrawBitmap( const wxBitmap &bmp
 119                                 ,long x, long y
 120                                 ,bool useMask = FALSE
 121                                );
 122     virtual void   DoDrawText(const wxString& text, long x, long y);
 123     virtual bool   DoBlit( long xdest, long ydest
 124                           ,long width, long height
 125                           ,wxDC *source
 126                           ,long xsrc, long ysrc
 127                           ,int rop = wxCOPY, bool useMask = FALSE
 128                          );
 129     virtual void   DoGetSize(int *width, int *height) const;
 130     virtual void   DoGetSizeMM(int* width, int* height) const;
 131     virtual void   DoDrawLines( int n, wxPoint points[]
 132                                ,long xoffset, long yoffset
 133                               );
 134     virtual void   DoDrawPolygon( int n, wxPoint points[]
 135                                  ,long xoffset, long yoffset
 136                                  ,int fillStyle = wxODDEVEN_RULE
 137                                 );
 138     virtual void   DoSetClippingRegionAsRegion(const wxRegion& region);
 139     virtual void   DoSetClippingRegion( long x, long y
 140                                        ,long width, long height
 141                                       );
 142 #if wxUSE_SPLINES
 143     virtual void DoDrawSpline(wxList *points);
 144 #endif
 145
 146     // OS2-specific member variables
 147     int               m_windowExtX;
 148     int               m_windowExtY;
 149
 150 //-----------------------------------------------------------------------------
 151 // Other virtuals from wxDCBase that are overridden here
 152 //-----------------------------------------------------------------------------
 153
 154     virtual void SetLogicalScale( double x, double y );
 155
 156 //-----------------------------------------------------------------------------
 157 // Our own new stuff
 158 //-----------------------------------------------------------------------------
 159     virtual void SetInternalDeviceOrigin( long x, long y );
 160     virtual void GetInternalDeviceOrigin( long *x, long *y );
 161
 162     virtual void SetRop(WXHDC cdc);
 163     virtual void DoClipping(WXHDC cdc);
 164     virtual void SelectOldObjects(WXHDC dc);
 165
 166     wxWindow *GetWindow() const { return m_canvas; }
 167     void SetWindow(wxWindow *win) { m_canvas = win; }
 168
 169     WXHDC GetHDC() const { return m_hDC; }
 170     void SetHDC(WXHDC dc, bool bOwnsDC = FALSE)
 171     {
 172         m_hDC = dc;
 173         m_bOwnsDC = bOwnsDC;
 174     }
 175
 176 private:
 177
 178 #if WXWIN_COMPATIBILITY
 179     // function hiding warning supression
 180     virtual void   GetTextExtent( const wxString& string
 181                                  ,long*           width
 182                                  ,long*           height
 183                                  ,long*           descent = NULL
 184                                  ,long*           externalLeading = NULL
 185                                  ,wxFont*         theFont = NULL
 186                                  ,bool            use16 = FALSE
 187                                 ) const
 188     { wxDCBase::GetTextExtent(string, width, height, descent, externalLeading, theFont, use16); };
 189 #endif
 190
 191 protected:
 192
 193     // ------------------------------------------------------------------------
 194     // Some additional data we need
 195     // ------------------------------------------------------------------------
 196
 197     // Owner canvas and selected in bitmap (if bitmap is GDI object selected)
 198     wxWindow*         m_canvas;
 199     wxBitmap          m_selectedBitmap;
 200
 201     // our HDC and its usage count: we only free it when the usage count drops
 202     // to 0
 203     WXHDC             m_hDC;
 204     int               m_hDCCount;
 205     bool              m_bOwnsDC:1;
 206
 207     // Store all old GDI objects when do a SelectObject, so we can select them
 208     // back in (this unselecting user's objects) so we can safely delete the
 209     // DC.
 210     WXHBITMAP         m_oldBitmap;
 211     WXHPEN            m_oldPen;
 212     WXHBRUSH          m_oldBrush;
 213     WXHFONT           m_oldFont;
 214     WXHPALETTE        m_oldPalette;
 215 };
 216
 217 #endif
 218     // _WX_DC_H_