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     virtual ~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 // this is an ABC: use one of the derived classes to create a DC associated
  99 // with a window, screen, printer and so on
 100 class WXDLLIMPEXP_CORE wxPMDCImpl : public wxDCImpl
 101 {
 102     DECLARE_DYNAMIC_CLASS(wxDC)
 103
 104 public:
 105     wxPMDCImpl(wxDC *owner, WXHDC hDC);
 106     virtual ~wxPMDCImpl();
 107
 108     // implement base class pure virtuals
 109     // ----------------------------------
 110
 111     virtual void Clear(void);
 112
 113     virtual bool    StartDoc(const wxString& rsMessage);
 114     virtual void    EndDoc(void);
 115
 116     virtual void    StartPage(void);
 117     virtual void    EndPage(void);
 118
 119     virtual void    SetFont(const wxFont& rFont);
 120     virtual void    SetPen(const wxPen& rPen);
 121     virtual void    SetBrush(const wxBrush& rBrush);
 122     virtual void    SetBackground(const wxBrush& rBrush);
 123     virtual void    SetBackgroundMode(int nMode);
 124     virtual void    SetPalette(const wxPalette& rPalette);
 125
 126     virtual void    DestroyClippingRegion(void);
 127
 128     virtual wxCoord GetCharHeight(void) const;
 129     virtual wxCoord GetCharWidth(void) const;
 130
 131     virtual bool    CanDrawBitmap(void) const;
 132     virtual bool    CanGetTextExtent(void) const;
 133     virtual int     GetDepth(void) const;
 134     virtual wxSize  GetPPI(void) const;
 135
 136     virtual void    SetMapMode(int nMode);
 137     virtual void    SetUserScale( double dX
 138                                  ,double dY
 139                                 );
 140     virtual void    SetLogicalScale( double dX
 141                                     ,double dY
 142                                    );
 143     virtual void    SetLogicalOrigin( wxCoord vX
 144                                      ,wxCoord vY
 145                                     );
 146     virtual void    SetDeviceOrigin( wxCoord vX
 147                                     ,wxCoord vY
 148                                    );
 149     virtual void    SetAxisOrientation( bool bXLeftRight
 150                                        ,bool bYBottomUp
 151                                       );
 152     virtual void    SetLogicalFunction(int nFunction);
 153
 154     // implementation from now on
 155     // --------------------------
 156
 157     virtual void    SetRop(WXHDC hCdc);
 158     virtual void    SelectOldObjects(WXHDC hDc);
 159
 160     wxWindow*       GetWindow(void) const { return m_pCanvas; }
 161     void            SetWindow(wxWindow* pWin) { m_pCanvas = pWin; }
 162
 163     WXHDC           GetHDC(void) const { return m_hDC; }
 164     void            SetHDC( WXHDC hDc
 165                            ,bool  bOwnsDC = FALSE
 166                           )
 167     {
 168         m_hDC = hDc;
 169         m_bOwnsDC = bOwnsDC;
 170     }
 171
 172     HPS             GetHPS(void) const { return m_hPS; }
 173     void            SetHPS(HPS hPS)
 174     {
 175         m_hPS = hPS;
 176     }
 177     const wxBitmap& GetSelectedBitmap(void) const { return m_vSelectedBitmap; }
 178     wxBitmap&       GetSelectedBitmap(void) { return m_vSelectedBitmap; }
 179
 180     void            UpdateClipBox();
 181
 182 #if wxUSE_DC_CACHEING
 183     static wxDCCacheEntry* FindBitmapInCache( HPS hPS
 184                                              ,int nWidth
 185                                              ,int nHeight
 186                                             );
 187     static wxDCCacheEntry* FindDCInCache( wxDCCacheEntry* pNotThis
 188                                          ,HPS             hPS
 189                                         );
 190
 191     static void AddToBitmapCache(wxDCCacheEntry* pEntry);
 192     static void AddToDCCache(wxDCCacheEntry* pEntry);
 193     static void ClearCache(void);
 194 #endif
 195
 196 protected:
 197     void Init()
 198     {
 199         m_pCanvas      = NULL;
 200         m_hOldBitmap   = 0;
 201         m_hOldPen      = 0;
 202         m_hOldBrush    = 0;
 203         m_hOldFont     = 0;
 204 #if wxUSE_PALETTE
 205         m_hOldPalette  = 0;
 206 #endif // wxUSE_PALETTE
 207
 208         m_bOwnsDC      = false;
 209         m_hDC          = 0;
 210         m_hOldPS       = NULL;
 211         m_hPS          = NULL;
 212         m_bIsPaintTime = false; // True at Paint Time
 213
 214         m_pen.SetColour(*wxBLACK);
 215         m_brush.SetColour(*wxWHITE);
 216     }
 217
 218     // create an uninitialized DC: this should be only used by the derived
 219     // classes
 220     wxPMDCImpl( wxDC *owner ) : wxDCImpl( owner ) { Init(); }
 221
 222 public:
 223     virtual void    DoGetTextExtent( const wxString& rsString
 224                                     ,wxCoord*        pX
 225                                     ,wxCoord*        pY
 226                                     ,wxCoord*        pDescent = NULL
 227                                     ,wxCoord*        pExternalLeading = NULL
 228                                     ,const wxFont*   pTheFont = NULL
 229                                    ) const;
 230     virtual bool DoFloodFill( wxCoord         vX
 231                              ,wxCoord         vY
 232                              ,const wxColour& rCol
 233                              ,int             nStyle = wxFLOOD_SURFACE
 234                             );
 235
 236     virtual bool DoGetPixel( wxCoord   vX
 237                             ,wxCoord   vY
 238                             ,wxColour* pCol
 239                            ) const;
 240
 241     virtual void DoDrawPoint( wxCoord vX
 242                              ,wxCoord vY
 243                             );
 244     virtual void DoDrawLine( wxCoord vX1
 245                             ,wxCoord vY1
 246                             ,wxCoord vX2
 247                             ,wxCoord vY2
 248                            );
 249
 250     virtual void DoDrawArc( wxCoord vX1
 251                            ,wxCoord vY1
 252                            ,wxCoord vX2
 253                            ,wxCoord vY2
 254                            ,wxCoord vXc
 255                            ,wxCoord vYc
 256                           );
 257     virtual void DoDrawCheckMark( wxCoord vX
 258                                  ,wxCoord vY
 259                                  ,wxCoord vWidth
 260                                  ,wxCoord vHeight
 261                                 );
 262     virtual void DoDrawEllipticArc( wxCoord vX
 263                                    ,wxCoord vY
 264                                    ,wxCoord vW
 265                                    ,wxCoord vH
 266                                    ,double  dSa
 267                                    ,double  dEa
 268                                   );
 269
 270     virtual void DoDrawRectangle( wxCoord vX
 271                                  ,wxCoord vY
 272                                  ,wxCoord vWidth
 273                                  ,wxCoord vHeight
 274                                 );
 275     virtual void DoDrawRoundedRectangle( wxCoord vX
 276                                         ,wxCoord vY
 277                                         ,wxCoord vWidth
 278                                         ,wxCoord vHeight
 279                                         ,double  dRadius
 280                                        );
 281     virtual void DoDrawEllipse( wxCoord vX
 282                                ,wxCoord vY
 283                                ,wxCoord vWidth
 284                                ,wxCoord vHeight
 285                               );
 286
 287     virtual void DoCrossHair( wxCoord vX
 288                              ,wxCoord vY
 289                             );
 290
 291     virtual void DoDrawIcon( const wxIcon& rIcon
 292                             ,wxCoord       vX
 293                             ,wxCoord       vY
 294                            );
 295     virtual void DoDrawBitmap( const wxBitmap& rBmp
 296                               ,wxCoord         vX
 297                               ,wxCoord         vY
 298                               ,bool            bUseMask = FALSE
 299                              );
 300
 301     virtual void DoDrawText( const wxString& rsText
 302                             ,wxCoord         vX
 303                             ,wxCoord         vY
 304                            );
 305     virtual void DoDrawRotatedText( const wxString& rsText
 306                                    ,wxCoord         vX
 307                                    ,wxCoord         vY
 308                                    ,double          dAngle
 309                                   );
 310
 311     virtual bool DoBlit( wxCoord vXdest
 312                         ,wxCoord vYdest
 313                         ,wxCoord vWidth
 314                         ,wxCoord vHeight
 315                         ,wxDC*   pSource
 316                         ,wxCoord vXsrc
 317                         ,wxCoord vYsrc
 318                         ,int     nRop = wxCOPY
 319                         ,bool    bUseMask = FALSE
 320                         ,wxCoord vXsrcMask = -1
 321                         ,wxCoord vYsrcMask = -1
 322                        );
 323
 324     virtual void DoSetClippingRegion( wxCoord vX
 325                                      ,wxCoord vY
 326                                      ,wxCoord vWidth
 327                                      ,wxCoord vHeight
 328                                     );
 329     virtual void DoSetDeviceClippingRegion(const wxRegion& rRegion);
 330
 331     virtual void DoGetSize( int* pWidth
 332                            ,int* pHeight
 333                           ) const;
 334     virtual void DoGetSizeMM( int* pWidth
 335                              ,int* pHeight
 336                             ) const;
 337
 338     virtual void DoDrawLines( int     n
 339                              ,wxPoint vaPoints[]
 340                              ,wxCoord vXoffset
 341                              ,wxCoord yYoffset
 342                             );
 343     virtual void DoDrawPolygon( int     n
 344                                ,wxPoint vaPoints[]
 345                                ,wxCoord vXoffset
 346                                ,wxCoord vYoffset
 347                                ,int     nFillStyle = wxODDEVEN_RULE
 348                               );
 349
 350 #if wxUSE_PALETTE
 351     void DoSelectPalette(bool bRealize = FALSE);
 352     void InitializePalette(void);
 353 #endif // wxUSE_PALETTE
 354
 355 protected:
 356     //
 357     // common part of DoDrawText() and DoDrawRotatedText()
 358     //
 359     void DrawAnyText( const wxString& rsText
 360                      ,wxCoord         vX
 361                      ,wxCoord         vY
 362                     );
 363
 364     // OS2-specific member variables ?? do we even need this under OS/2?
 365     int                             m_nWindowExtX;
 366     int                             m_nWindowExtY;
 367
 368     //
 369     // the window associated with this DC (may be NULL)
 370     //
 371     wxWindow*                       m_pCanvas;
 372     wxBitmap                        m_vSelectedBitmap;
 373
 374 public:
 375     // PM specific stuff
 376     HPS                             m_hPS;
 377     HPS                             m_hOldPS;   // old hPS, if any
 378     bool                            m_bIsPaintTime;// True at Paint Time
 379
 380     RECTL                           m_vRclPaint; // Bounding rectangle at Paint time etc.
 381     //
 382     // TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
 383     //
 384     bool                            m_bOwnsDC:1;
 385
 386     //
 387     // our HDC
 388     //
 389     WXHDC                           m_hDC;
 390
 391     //
 392     // Store all old GDI objects when do a SelectObject, so we can select them
 393     // back in (this unselecting user's objects) so we can safely delete the
 394     // DC.
 395     //
 396     WXHBITMAP                       m_hOldBitmap;
 397     WXHPEN                          m_hOldPen;
 398     WXHBRUSH                        m_hOldBrush;
 399     WXHFONT                         m_hOldFont;
 400     WXHPALETTE                      m_hOldPalette;
 401
 402 #if wxUSE_DC_CACHEING
 403     static wxList                   m_svBitmapCache;
 404     static wxList                   m_svDCCache;
 405 #endif
 406 }; // end of CLASS wxDC
 407 #endif
 408     // _WX_DC_H_