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 #if wxUSE_DC_CACHEING
  71 /*
  72  * Cached blitting, maintaining a cache
  73  * of bitmaps required for transparent blitting
  74  * instead of constant creation/deletion
  75  */
  76
  77 class wxDCCacheEntry : public wxObject
  78 {
  79 public:
  80     wxDCCacheEntry( WXHBITMAP hBitmap
  81                    ,int       nWidth
  82                    ,int       nHeight
  83                    ,int       nDepth
  84                   );
  85     wxDCCacheEntry( HPS   hPS
  86                    ,int   nDepth
  87                   );
  88     ~wxDCCacheEntry();
  89
  90     WXHBITMAP                       m_hBitmap;
  91     HPS                             m_hPS;
  92     int                             m_nWidth;
  93     int                             m_nHeight;
  94     int                             m_nDepth;
  95 }; // end of CLASS wxDCCacheEntry
  96 #endif
  97
  98 class WXDLLEXPORT wxDC : public wxDCBase
  99 {
 100     DECLARE_DYNAMIC_CLASS(wxDC)
 101
 102 public:
 103     wxDC(void);
 104     ~wxDC();
 105
 106     // implement base class pure virtuals
 107     // ----------------------------------
 108
 109     virtual void Clear(void);
 110
 111     virtual bool    StartDoc(const wxString& rsMessage);
 112     virtual void    EndDoc(void);
 113
 114     virtual void    StartPage(void);
 115     virtual void    EndPage(void);
 116
 117     virtual void    SetFont(const wxFont& rFont);
 118     virtual void    SetPen(const wxPen& rPen);
 119     virtual void    SetBrush(const wxBrush& rBrush);
 120     virtual void    SetBackground(const wxBrush& rBrush);
 121     virtual void    SetBackgroundMode(int nMode);
 122     virtual void    SetPalette(const wxPalette& rPalette);
 123
 124     virtual void    DestroyClippingRegion(void);
 125
 126     virtual wxCoord GetCharHeight(void) const;
 127     virtual wxCoord GetCharWidth(void) const;
 128     virtual void    DoGetTextExtent( const wxString& rsString
 129                                     ,wxCoord*        pX
 130                                     ,wxCoord*        pY
 131                                     ,wxCoord*        pDescent = NULL
 132                                     ,wxCoord*        pExternalLeading = NULL
 133                                     ,wxFont*         pTheFont = NULL
 134                                    ) const;
 135     virtual bool    CanDrawBitmap(void) const;
 136     virtual bool    CanGetTextExtent(void) const;
 137     virtual int     GetDepth(void) const;
 138     virtual wxSize  GetPPI(void) const;
 139
 140     virtual void    SetMapMode(int nMode);
 141     virtual void    SetUserScale( double dX
 142                                  ,double dY
 143                                 );
 144     virtual void    SetSystemScale( double dX
 145                                    ,double dY
 146                                   );
 147     virtual void    SetLogicalScale( double dX
 148                                     ,double dY
 149                                    );
 150     virtual void    SetLogicalOrigin( wxCoord vX
 151                                      ,wxCoord vY
 152                                     );
 153     virtual void    SetDeviceOrigin( wxCoord vX
 154                                     ,wxCoord vY
 155                                    );
 156     virtual void    SetAxisOrientation( bool bXLeftRight
 157                                        ,bool bYBottomUp
 158                                       );
 159     virtual void    SetLogicalFunction(int nFunction);
 160
 161     // implementation from now on
 162     // --------------------------
 163
 164     virtual void    SetRop(WXHDC hCdc);
 165     virtual void    SelectOldObjects(WXHDC hDc);
 166
 167     wxWindow*       GetWindow(void) const { return m_pCanvas; }
 168     void            SetWindow(wxWindow* pWin) { m_pCanvas = pWin; }
 169
 170     WXHDC           GetHDC(void) const { return m_hDC; }
 171     void            SetHDC( WXHDC hDc
 172                            ,bool  bOwnsDC = FALSE
 173                           )
 174     {
 175         m_hDC = hDc;
 176         m_bOwnsDC = bOwnsDC;
 177     }
 178
 179     HPS             GetHPS(void) const { return m_hPS; }
 180     void            SetHPS(HPS hPS)
 181     {
 182         HDC                         hDC = ::GpiQueryDevice(hPS);
 183         m_hPS = hPS;
 184     }
 185     const wxBitmap& GetSelectedBitmap(void) const { return m_vSelectedBitmap; }
 186     wxBitmap&       GetSelectedBitmap(void) { return m_vSelectedBitmap; }
 187
 188     void            UpdateClipBox();
 189
 190 #if wxUSE_DC_CACHEING
 191     static wxDCCacheEntry* FindBitmapInCache( HPS hPS
 192                                              ,int nWidth
 193                                              ,int nHeight
 194                                             );
 195     static wxDCCacheEntry* FindDCInCache( wxDCCacheEntry* pNotThis
 196                                          ,HPS             hPS
 197                                         );
 198
 199     static void AddToBitmapCache(wxDCCacheEntry* pEntry);
 200     static void AddToDCCache(wxDCCacheEntry* pEntry);
 201     static void ClearCache(void);
 202 #endif
 203
 204 protected:
 205     virtual void DoFloodFill( wxCoord         vX
 206                              ,wxCoord         vY
 207                              ,const wxColour& rCol
 208                              ,int             nStyle = wxFLOOD_SURFACE
 209                             );
 210
 211     virtual bool DoGetPixel( wxCoord   vX
 212                             ,wxCoord   vY
 213                             ,wxColour* pCol
 214                            ) const;
 215
 216     virtual void DoDrawPoint( wxCoord vX
 217                              ,wxCoord vY
 218                             );
 219     virtual void DoDrawLine( wxCoord vX1
 220                             ,wxCoord vY1
 221                             ,wxCoord vX2
 222                             ,wxCoord vY2
 223                            );
 224
 225     virtual void DoDrawArc( wxCoord vX1
 226                            ,wxCoord vY1
 227                            ,wxCoord vX2
 228                            ,wxCoord vY2
 229                            ,wxCoord vXc
 230                            ,wxCoord vYc
 231                           );
 232     virtual void DoDrawCheckMark( wxCoord vX
 233                                  ,wxCoord vY
 234                                  ,wxCoord vWidth
 235                                  ,wxCoord vHeight
 236                                 );
 237     virtual void DoDrawEllipticArc( wxCoord vX
 238                                    ,wxCoord vY
 239                                    ,wxCoord vW
 240                                    ,wxCoord vH
 241                                    ,double  dSa
 242                                    ,double  dEa
 243                                   );
 244
 245     virtual void DoDrawRectangle( wxCoord vX
 246                                  ,wxCoord vY
 247                                  ,wxCoord vWidth
 248                                  ,wxCoord vHeight
 249                                 );
 250     virtual void DoDrawRoundedRectangle( wxCoord vX
 251                                         ,wxCoord vY
 252                                         ,wxCoord vWidth
 253                                         ,wxCoord vHeight
 254                                         ,double  dRadius
 255                                        );
 256     virtual void DoDrawEllipse( wxCoord vX
 257                                ,wxCoord vY
 258                                ,wxCoord vWidth
 259                                ,wxCoord vHeight
 260                               );
 261
 262     virtual void DoCrossHair( wxCoord vX
 263                              ,wxCoord vY
 264                             );
 265
 266     virtual void DoDrawIcon( const wxIcon& rIcon
 267                             ,wxCoord       vX
 268                             ,wxCoord       vY
 269                            );
 270     virtual void DoDrawBitmap( const wxBitmap& rBmp
 271                               ,wxCoord         vX
 272                               ,wxCoord         vY
 273                               ,bool            bUseMask = FALSE
 274                              );
 275
 276     virtual void DoDrawText( const wxString& rsText
 277                             ,wxCoord         vX
 278                             ,wxCoord         vY
 279                            );
 280     virtual void DoDrawRotatedText( const wxString& rsText
 281                                    ,wxCoord         vX
 282                                    ,wxCoord         vY
 283                                    ,double          dAngle
 284                                   );
 285
 286     virtual bool DoBlit( wxCoord vXdest
 287                         ,wxCoord vYdest
 288                         ,wxCoord vWidth
 289                         ,wxCoord vHeight
 290                         ,wxDC*   pSource
 291                         ,wxCoord vXsrc
 292                         ,wxCoord vYsrc
 293                         ,int     nRop = wxCOPY
 294                         ,bool    bUseMask = FALSE
 295                         ,wxCoord vXsrcMask = -1
 296                         ,wxCoord vYsrcMask = -1
 297                        );
 298
 299     virtual void DoSetClippingRegionAsRegion(const wxRegion& rRegion);
 300     virtual void DoSetClippingRegion( wxCoord vX
 301                                      ,wxCoord vY
 302                                      ,wxCoord vWidth
 303                                      ,wxCoord vHeight
 304                                     );
 305     virtual void DoGetClippingRegion( wxCoord* pX
 306                                      ,wxCoord* pY
 307                                      ,wxCoord* pWidth
 308                                      ,wxCoord* pHeight)
 309     {
 310         GetClippingBox( pX
 311                        ,pY
 312                        ,pWidth
 313                        ,pHeight
 314                       );
 315     }
 316
 317     virtual void DoGetSize( int* pWidth
 318                            ,int* pHeight
 319                           ) const;
 320     virtual void DoGetSizeMM( int* pWidth
 321                              ,int* pHeight
 322                             ) const;
 323
 324     virtual void DoDrawLines( int     n
 325                              ,wxPoint vaPoints[]
 326                              ,wxCoord vXoffset
 327                              ,wxCoord yYoffset
 328                             );
 329     virtual void DoDrawPolygon( int     n
 330                                ,wxPoint vaPoints[]
 331                                ,wxCoord vXoffset
 332                                ,wxCoord vYoffset
 333                                ,int     nFillStyle = wxODDEVEN_RULE
 334                               );
 335
 336
 337     //
 338     // common part of DoDrawText() and DoDrawRotatedText()
 339     //
 340     void DrawAnyText( const wxString& rsText
 341                      ,wxCoord         vX
 342                      ,wxCoord         vY
 343                     );
 344
 345     // OS2-specific member variables ?? do we even need this under OS/2?
 346     int                             m_nWindowExtX;
 347     int                             m_nWindowExtY;
 348
 349     //
 350     // the window associated with this DC (may be NULL)
 351     //
 352     wxWindow*                       m_pCanvas;
 353     wxBitmap                        m_vSelectedBitmap;
 354
 355 public:
 356     // PM specific stuff
 357     HPS                             m_hPS;
 358     HPS                             m_hOldPS;   // old hPS, if any
 359     bool                            m_bIsPaintTime;// True at Paint Time
 360
 361     RECTL                           m_vRclPaint; // Bounding rectangle at Paint time etc.
 362     //
 363     // TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
 364     //
 365     bool                            m_bOwnsDC:1;
 366
 367     //
 368     // our HDC
 369     //
 370     WXHDC                           m_hDC;
 371
 372     //
 373     // Store all old GDI objects when do a SelectObject, so we can select them
 374     // back in (this unselecting user's objects) so we can safely delete the
 375     // DC.
 376     //
 377     WXHBITMAP                       m_hOldBitmap;
 378     WXHPEN                          m_hOldPen;
 379     WXHBRUSH                        m_hOldBrush;
 380     WXHFONT                         m_hOldFont;
 381     WXHPALETTE                      m_hOldPalette;
 382
 383 #if wxUSE_DC_CACHEING
 384     static wxList                   m_svBitmapCache;
 385     static wxList                   m_svDCCache;
 386 #endif
 387 }; // end of CLASS wxDC
 388 #endif
 389     // _WX_DC_H_