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 #include "wx/defs.h"
  16 #include "wx/dc.h"
  17
  18 // ---------------------------------------------------------------------------
  19 // macros
  20 // ---------------------------------------------------------------------------
  21
  22 // Logical to device
  23 // Absolute
  24 #define XLOG2DEV(x) (x)
  25 #define YLOG2DEV(y) (y)
  26
  27 // Relative
  28 #define XLOG2DEVREL(x) (x)
  29 #define YLOG2DEVREL(y) (y)
  30
  31 // Device to logical
  32 // Absolute
  33 #define XDEV2LOG(x) (x)
  34
  35 #define YDEV2LOG(y) (y)
  36
  37 // Relative
  38 #define XDEV2LOGREL(x) (x)
  39 #define YDEV2LOGREL(y) (y)
  40
  41 /*
  42  * Have the same macros as for XView but not for every operation:
  43  * just for calculating window/viewport extent (a better way of scaling).
  44  */
  45
  46 // Logical to device
  47 // Absolute
  48 #define MS_XLOG2DEV(x) LogicalToDevice(x)
  49
  50 #define MS_YLOG2DEV(y) LogicalToDevice(y)
  51
  52 // Relative
  53 #define MS_XLOG2DEVREL(x) LogicalToDeviceXRel(x)
  54 #define MS_YLOG2DEVREL(y) LogicalToDeviceYRel(y)
  55
  56 // Device to logical
  57 // Absolute
  58 #define MS_XDEV2LOG(x) DeviceToLogicalX(x)
  59
  60 #define MS_YDEV2LOG(y) DeviceToLogicalY(y)
  61
  62 // Relative
  63 #define MS_XDEV2LOGREL(x) DeviceToLogicalXRel(x)
  64 #define MS_YDEV2LOGREL(y) DeviceToLogicalYRel(y)
  65
  66 #define YSCALE(y) (yorigin - (y))
  67
  68 #define     wx_round(a)    (int)((a)+.5)
  69
  70 class WXDLLEXPORT wxDC : public wxDCBase
  71 {
  72     DECLARE_DYNAMIC_CLASS(wxDC)
  73
  74 public:
  75     wxDC();
  76     ~wxDC();
  77
  78     // implement base class pure virtuals
  79     // ----------------------------------
  80
  81     virtual void Clear(void);
  82
  83     virtual bool    StartDoc(const wxString& rsMessage);
  84     virtual void    EndDoc(void);
  85
  86     virtual void    StartPage(void);
  87     virtual void    EndPage(void);
  88
  89     virtual void    SetFont(const wxFont& rFont);
  90     virtual void    SetPen(const wxPen& rPen);
  91     virtual void    SetBrush(const wxBrush& rBrush);
  92     virtual void    SetBackground(const wxBrush& rBrush);
  93     virtual void    SetBackgroundMode(int nMode);
  94     virtual void    SetPalette(const wxPalette& rPalette);
  95
  96     virtual void    DestroyClippingRegion(void);
  97
  98     virtual wxCoord GetCharHeight(void) const;
  99     virtual wxCoord GetCharWidth(void) const;
 100     virtual void    DoGetTextExtent( const wxString& rsString
 101                                     ,wxCoord*        pX
 102                                     ,wxCoord*        pY
 103                                     ,wxCoord*        pDescent = NULL
 104                                     ,wxCoord*        pExternalLeading = NULL
 105                                     ,wxFont*         pTheFont = NULL
 106                                    ) const;
 107     virtual bool    CanDrawBitmap(void) const;
 108     virtual bool    CanGetTextExtent(void) const;
 109     virtual int     GetDepth(void) const;
 110     virtual wxSize  GetPPI(void) const;
 111
 112     virtual void    SetMapMode(int nMode);
 113     virtual void    SetUserScale( double dX
 114                                  ,double dY
 115                                 );
 116     virtual void    SetSystemScale( double dX
 117                                    ,double dY
 118                                   );
 119     virtual void    SetLogicalScale( double dX
 120                                     ,double dY
 121                                    );
 122     virtual void    SetLogicalOrigin( wxCoord vX
 123                                      ,wxCoord vY
 124                                     );
 125     virtual void    SetDeviceOrigin( wxCoord vX
 126                                     ,wxCoord vY
 127                                    );
 128     virtual void    SetAxisOrientation( bool bXLeftRight
 129                                        ,bool bYBottomUp
 130                                       );
 131     virtual void    SetLogicalFunction(int nFunction);
 132
 133     // implementation from now on
 134     // --------------------------
 135
 136     virtual void    SetRop(WXHDC hCdc);
 137     virtual void    SelectOldObjects(WXHDC hDc);
 138
 139     wxWindow*       GetWindow(void) const { return m_pCanvas; }
 140     void            SetWindow(wxWindow* pWin) { m_pCanvas = pWin; }
 141
 142     WXHDC           GetHDC(void) const { return m_hDC; }
 143     void            SetHDC( WXHDC hDc
 144                            ,bool  bOwnsDC = FALSE
 145                           )
 146     {
 147         m_hDC = hDc;
 148         m_bOwnsDC = bOwnsDC;
 149     }
 150
 151     const wxBitmap& GetSelectedBitmap(void) const { return m_vSelectedBitmap; }
 152     wxBitmap&       GetSelectedBitmap(void) { return m_vSelectedBitmap; }
 153
 154 protected:
 155     virtual void DoFloodFill( wxCoord         vX
 156                              ,wxCoord         vY
 157                              ,const wxColour& rCol
 158                              ,int             nStyle = wxFLOOD_SURFACE
 159                             );
 160
 161     virtual bool DoGetPixel( wxCoord   vX
 162                             ,wxCoord   vY
 163                             ,wxColour* pCol
 164                            ) const;
 165
 166     virtual void DoDrawPoint( wxCoord vX
 167                              ,wxCoord vY
 168                             );
 169     virtual void DoDrawLine( wxCoord vX1
 170                             ,wxCoord vY1
 171                             ,wxCoord vX2
 172                             ,wxCoord vY2
 173                            );
 174
 175     virtual void DoDrawArc( wxCoord vX1
 176                            ,wxCoord vY1
 177                            ,wxCoord vX2
 178                            ,wxCoord vY2
 179                            ,wxCoord vXc
 180                            ,wxCoord vYc
 181                           );
 182     virtual void DoDrawCheckMark( wxCoord vX
 183                                  ,wxCoord vY
 184                                  ,wxCoord vWidth
 185                                  ,wxCoord vHeight
 186                                 );
 187     virtual void DoDrawEllipticArc( wxCoord vX
 188                                    ,wxCoord vY
 189                                    ,wxCoord vW
 190                                    ,wxCoord vH
 191                                    ,double  dSa
 192                                    ,double  dEa
 193                                   );
 194
 195     virtual void DoDrawRectangle( wxCoord vX
 196                                  ,wxCoord vY
 197                                  ,wxCoord vWidth
 198                                  ,wxCoord vHeight
 199                                 );
 200     virtual void DoDrawRoundedRectangle( wxCoord vX
 201                                         ,wxCoord vY
 202                                         ,wxCoord vWidth
 203                                         ,wxCoord vHeight
 204                                         ,double  dRadius
 205                                        );
 206     virtual void DoDrawEllipse( wxCoord vX
 207                                ,wxCoord vY
 208                                ,wxCoord vWidth
 209                                ,wxCoord vHeight
 210                               );
 211
 212     virtual void DoCrossHair( wxCoord vX
 213                              ,wxCoord vY
 214                             );
 215
 216     virtual void DoDrawIcon( const wxIcon& rIcon
 217                             ,wxCoord       vX
 218                             ,wxCoord       vY
 219                            );
 220     virtual void DoDrawBitmap( const wxBitmap& rBmp
 221                               ,wxCoord         vX
 222                               ,wxCoord         vY
 223                               ,bool            bUseMask = FALSE
 224                              );
 225
 226     virtual void DoDrawText( const wxString& rsText
 227                             ,wxCoord         vX
 228                             ,wxCoord         vY
 229                            );
 230     virtual void DoDrawRotatedText( const wxString& rsText
 231                                    ,wxCoord         vX
 232                                    ,wxCoord         vY
 233                                    ,double          dAngle
 234                                   );
 235
 236     virtual bool DoBlit( wxCoord vXdest
 237                         ,wxCoord vYdest
 238                         ,wxCoord vWidth
 239                         ,wxCoord vHeight
 240                         ,wxDC*   pSource
 241                         ,wxCoord vXsrc
 242                         ,wxCoord vYsrc
 243                         ,int     nRop = wxCOPY
 244                         ,bool    bUseMask = FALSE
 245                        );
 246
 247     virtual void DoSetClippingRegionAsRegion(const wxRegion& rRegion);
 248     virtual void DoSetClippingRegion( wxCoord vX
 249                                      ,wxCoord vY
 250                                      ,wxCoord vWidth
 251                                      ,wxCoord vHeight
 252                                     );
 253     virtual void DoGetClippingRegion( wxCoord* pX
 254                                      ,wxCoord* pY
 255                                      ,wxCoord* pWidth
 256                                      ,wxCoord* pHeight)
 257     {
 258         GetClippingBox( pX
 259                        ,pY
 260                        ,pWidth
 261                        ,pHeight
 262                       );
 263     }
 264
 265     virtual void DoGetSize( int* pWidth
 266                            ,int* pHeight
 267                           ) const;
 268     virtual void DoGetSizeMM( int* pWidth
 269                              ,int* pHeight
 270                             ) const;
 271
 272     virtual void DoDrawLines( int     n
 273                              ,wxPoint vaPoints[]
 274                              ,wxCoord vXoffset
 275                              ,wxCoord yYoffset
 276                             );
 277     virtual void DoDrawPolygon( int     n
 278                                ,wxPoint vaPoints[]
 279                                ,wxCoord vXoffset
 280                                ,wxCoord vYoffset
 281                                ,int     nFillStyle = wxODDEVEN_RULE
 282                               );
 283
 284 #if wxUSE_SPLINES
 285     virtual void DoDrawSpline(wxList* pPoints);
 286 #endif // wxUSE_SPLINES
 287
 288     //
 289     // common part of DoDrawText() and DoDrawRotatedText()
 290     //
 291     void DrawAnyText( const wxString& rsText
 292                      ,wxCoord         vX
 293                      ,wxCoord         vY
 294                     );
 295
 296     // OS2-specific member variables ?? do we even need this under OS/2?
 297     int                             m_nWindowExtX;
 298     int                             m_nWindowExtY;
 299
 300     //
 301     // the window associated with this DC (may be NULL)
 302     //
 303     wxWindow*                       m_pCanvas;
 304     wxBitmap                        m_vSelectedBitmap;
 305
 306     //
 307     // TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
 308     //
 309     bool                            m_bOwnsDC:1;
 310
 311     //
 312     // our HDC and its usage count: we only free it when the usage count drops
 313     // to 0
 314     //
 315     WXHDC                           m_hDC;
 316     int                             m_nDCCount;
 317
 318     //
 319     // Store all old GDI objects when do a SelectObject, so we can select them
 320     // back in (this unselecting user's objects) so we can safely delete the
 321     // DC.
 322     //
 323     WXHBITMAP                       m_hOldBitmap;
 324     WXHPEN                          m_hOldPen;
 325     WXHBRUSH                        m_hOldBrush;
 326     WXHFONT                         m_hOldFont;
 327     WXHPALETTE                      m_hOldPalette;
 328 };
 329 #endif
 330     // _WX_DC_H_