include/wx/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/dc.h
   3 // Purpose:     wxDC class
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     05/25/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DC_H_BASE_
  13 #define _WX_DC_H_BASE_
  14
  15 // ----------------------------------------------------------------------------
  16 // headers which we must include here
  17 // ----------------------------------------------------------------------------
  18
  19 #include "wx/object.h"          // the base class
  20
  21 #include "wx/intl.h"            // for wxLayoutDirection
  22 #include "wx/cursor.h"          // we have member variables of these classes
  23 #include "wx/font.h"            // so we can't do without them
  24 #include "wx/colour.h"
  25 #include "wx/bitmap.h"          // for wxNullBitmap
  26 #include "wx/brush.h"
  27 #include "wx/pen.h"
  28 #include "wx/palette.h"
  29 #include "wx/dynarray.h"
  30 #include "wx/math.h"
  31 #include "wx/image.h"
  32 #include "wx/cmndata.h"
  33
  34 #define wxUSE_NEW_DC 1
  35
  36 class WXDLLIMPEXP_FWD_CORE wxDC;
  37 class WXDLLIMPEXP_FWD_CORE wxClientDC;
  38 class WXDLLIMPEXP_FWD_CORE wxPaintDC;
  39 class WXDLLIMPEXP_FWD_CORE wxWindowDC;
  40 class WXDLLIMPEXP_FWD_CORE wxScreenDC;
  41 class WXDLLIMPEXP_FWD_CORE wxMemoryDC;
  42 class WXDLLIMPEXP_FWD_CORE wxPrinterDC;
  43 class WXDLLIMPEXP_FWD_CORE wxPrintData;
  44
  45 //-----------------------------------------------------------------------------
  46 // wxDrawObject helper class
  47 //-----------------------------------------------------------------------------
  48
  49 class WXDLLIMPEXP_CORE wxDrawObject
  50 {
  51 public:
  52
  53     wxDrawObject()
  54         : m_isBBoxValid(false)
  55         , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
  56     { }
  57
  58     virtual ~wxDrawObject() { }
  59
  60     virtual void Draw(wxDC&) const { }
  61
  62     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
  63     {
  64       if ( m_isBBoxValid )
  65       {
  66          if ( x < m_minX ) m_minX = x;
  67          if ( y < m_minY ) m_minY = y;
  68          if ( x > m_maxX ) m_maxX = x;
  69          if ( y > m_maxY ) m_maxY = y;
  70       }
  71       else
  72       {
  73          m_isBBoxValid = true;
  74
  75          m_minX = x;
  76          m_minY = y;
  77          m_maxX = x;
  78          m_maxY = y;
  79       }
  80     }
  81
  82     void ResetBoundingBox()
  83     {
  84         m_isBBoxValid = false;
  85
  86         m_minX = m_maxX = m_minY = m_maxY = 0;
  87     }
  88
  89     // Get the final bounding box of the PostScript or Metafile picture.
  90
  91     wxCoord MinX() const { return m_minX; }
  92     wxCoord MaxX() const { return m_maxX; }
  93     wxCoord MinY() const { return m_minY; }
  94     wxCoord MaxY() const { return m_maxY; }
  95
  96     //to define the type of object for derived objects
  97     virtual int GetType()=0;
  98
  99 protected:
 100     //for boundingbox calculation
 101     bool m_isBBoxValid:1;
 102     //for boundingbox calculation
 103     wxCoord m_minX, m_minY, m_maxX, m_maxY;
 104 };
 105
 106
 107 //-----------------------------------------------------------------------------
 108 // wxDCFactory
 109 //-----------------------------------------------------------------------------
 110
 111 class WXDLLIMPEXP_FWD_CORE wxDCImpl;
 112
 113 class WXDLLIMPEXP_CORE wxDCFactory
 114 {
 115 public:
 116     wxDCFactory() {}
 117     virtual ~wxDCFactory() {}
 118
 119     virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner ) = 0;
 120     virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window ) = 0;
 121     virtual wxDCImpl* CreateClientDC( wxClientDC *owner ) = 0;
 122     virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window ) = 0;
 123     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner ) = 0;
 124     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window ) = 0;
 125     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner ) = 0;
 126     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ) = 0;
 127     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ) = 0;
 128     virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner ) = 0;
 129 #if wxUSE_PRINTING_ARCHITECTURE
 130     virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data  ) = 0;
 131 #endif
 132
 133     static void Set(wxDCFactory *factory);
 134     static wxDCFactory *Get();
 135
 136 private:
 137     static wxDCFactory *m_factory;
 138 };
 139
 140 //-----------------------------------------------------------------------------
 141 // wxNativeDCFactory
 142 //-----------------------------------------------------------------------------
 143
 144 class WXDLLIMPEXP_CORE wxNativeDCFactory: public wxDCFactory
 145 {
 146 public:
 147     wxNativeDCFactory() {}
 148
 149     virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner );
 150     virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window );
 151     virtual wxDCImpl* CreateClientDC( wxClientDC *owner );
 152     virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window );
 153     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner );
 154     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window );
 155     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner );
 156     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap );
 157     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc );
 158     virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner );
 159 #if wxUSE_PRINTING_ARCHITECTURE
 160     virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data  );
 161 #endif
 162 };
 163
 164 //-----------------------------------------------------------------------------
 165 // wxDCImpl
 166 //-----------------------------------------------------------------------------
 167
 168 class WXDLLIMPEXP_CORE wxDCImpl: public wxObject
 169 {
 170 public:
 171     wxDCImpl( wxDC *owner );
 172     ~wxDCImpl();
 173
 174     wxDC *GetOwner() const { return m_owner; }
 175
 176     wxWindow* GetWindow() const { return m_window; }
 177
 178     virtual bool IsOk() const { return m_ok; }
 179
 180     // query capabilities
 181
 182     virtual bool CanDrawBitmap() const = 0;
 183     virtual bool CanGetTextExtent() const = 0;
 184
 185     // get Cairo context
 186     virtual void* GetCairoContext() const
 187     {
 188         return NULL;
 189     }
 190
 191     // query dimension, colour deps, resolution
 192
 193     virtual void DoGetSize(int *width, int *height) const = 0;
 194     void GetSize(int *width, int *height) const
 195     {
 196         DoGetSize(width, height);
 197         return ;
 198     }
 199
 200     wxSize GetSize() const
 201     {
 202         int w, h;
 203         DoGetSize(&w, &h);
 204         return wxSize(w, h);
 205     }
 206
 207     virtual void DoGetSizeMM(int* width, int* height) const = 0;
 208
 209     virtual int GetDepth() const = 0;
 210     virtual wxSize GetPPI() const = 0;
 211
 212     // Right-To-Left (RTL) modes
 213
 214     virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) { }
 215     virtual wxLayoutDirection GetLayoutDirection() const  { return wxLayout_Default; }
 216
 217     // page and document
 218
 219     virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; }
 220     virtual void EndDoc() { }
 221
 222     virtual void StartPage() { }
 223     virtual void EndPage() { }
 224
 225     // flushing the content of this dc immediately eg onto screen
 226     virtual void Flush() { }
 227
 228     // bounding box
 229
 230     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
 231     {
 232       if ( m_isBBoxValid )
 233       {
 234          if ( x < m_minX ) m_minX = x;
 235          if ( y < m_minY ) m_minY = y;
 236          if ( x > m_maxX ) m_maxX = x;
 237          if ( y > m_maxY ) m_maxY = y;
 238       }
 239       else
 240       {
 241          m_isBBoxValid = true;
 242
 243          m_minX = x;
 244          m_minY = y;
 245          m_maxX = x;
 246          m_maxY = y;
 247       }
 248     }
 249     void ResetBoundingBox()
 250     {
 251         m_isBBoxValid = false;
 252
 253         m_minX = m_maxX = m_minY = m_maxY = 0;
 254     }
 255
 256     wxCoord MinX() const { return m_minX; }
 257     wxCoord MaxX() const { return m_maxX; }
 258     wxCoord MinY() const { return m_minY; }
 259     wxCoord MaxY() const { return m_maxY; }
 260
 261     // setters and getters
 262
 263     virtual void SetFont(const wxFont& font) = 0;
 264     virtual const wxFont&   GetFont() const { return m_font; }
 265
 266     virtual void SetPen(const wxPen& pen) = 0;
 267     virtual const wxPen&    GetPen() const { return m_pen; }
 268
 269     virtual void SetBrush(const wxBrush& brush) = 0;
 270     virtual const wxBrush&  GetBrush() const { return m_brush; }
 271
 272     virtual void SetBackground(const wxBrush& brush) = 0;
 273     virtual const wxBrush&  GetBackground() const { return m_backgroundBrush; }
 274
 275     virtual void SetBackgroundMode(int mode) = 0;
 276     virtual int GetBackgroundMode() const { return m_backgroundMode; }
 277
 278     virtual void SetTextForeground(const wxColour& colour)
 279         { m_textForegroundColour = colour; }
 280     virtual const wxColour& GetTextForeground() const { return m_textForegroundColour; }
 281
 282     virtual void SetTextBackground(const wxColour& colour)
 283         { m_textBackgroundColour = colour; }
 284     virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; }
 285
 286 #if wxUSE_PALETTE
 287     virtual void SetPalette(const wxPalette& palette) = 0;
 288 #endif // wxUSE_PALETTE
 289
 290     // logical functions
 291
 292     virtual void SetLogicalFunction(int function) = 0;
 293     virtual int GetLogicalFunction() const { return m_logicalFunction; }
 294
 295     // text measurement
 296
 297     virtual wxCoord GetCharHeight() const = 0;
 298     virtual wxCoord GetCharWidth() const = 0;
 299     virtual void DoGetTextExtent(const wxString& string,
 300                                  wxCoord *x, wxCoord *y,
 301                                  wxCoord *descent = NULL,
 302                                  wxCoord *externalLeading = NULL,
 303                                  const wxFont *theFont = NULL) const = 0;
 304     virtual void GetMultiLineTextExtent(const wxString& string,
 305                                         wxCoord *width,
 306                                         wxCoord *height,
 307                                         wxCoord *heightLine = NULL,
 308                                         const wxFont *font = NULL) const;
 309     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 310
 311     // clearing
 312
 313     virtual void Clear() = 0;
 314
 315     // clipping
 316
 317     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 318                                      wxCoord width, wxCoord height) = 0;
 319     virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0;
 320
 321     virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
 322                                   wxCoord *w, wxCoord *h) const
 323     {
 324         if ( x )
 325             *x = m_clipX1;
 326         if ( y )
 327             *y = m_clipY1;
 328         if ( w )
 329             *w = m_clipX2 - m_clipX1;
 330         if ( h )
 331             *h = m_clipY2 - m_clipY1;
 332     }
 333
 334     virtual void DestroyClippingRegion() { ResetClipping(); }
 335
 336
 337     // coordinates conversions and transforms
 338
 339     virtual wxCoord DeviceToLogicalX(wxCoord x) const;
 340     virtual wxCoord DeviceToLogicalY(wxCoord y) const;
 341     virtual wxCoord DeviceToLogicalXRel(wxCoord x) const;
 342     virtual wxCoord DeviceToLogicalYRel(wxCoord y) const;
 343     virtual wxCoord LogicalToDeviceX(wxCoord x) const;
 344     virtual wxCoord LogicalToDeviceY(wxCoord y) const;
 345     virtual wxCoord LogicalToDeviceXRel(wxCoord x) const;
 346     virtual wxCoord LogicalToDeviceYRel(wxCoord y) const;
 347
 348     virtual void SetMapMode(int mode);
 349     virtual int GetMapMode() const { return m_mappingMode; }
 350
 351     virtual void SetUserScale(double x, double y);
 352     virtual void GetUserScale(double *x, double *y) const
 353     {
 354         if ( x ) *x = m_userScaleX;
 355         if ( y ) *y = m_userScaleY;
 356     }
 357
 358     virtual void SetLogicalScale(double x, double y);
 359     virtual void GetLogicalScale(double *x, double *y)
 360     {
 361         if ( x ) *x = m_logicalScaleX;
 362         if ( y ) *y = m_logicalScaleY;
 363     }
 364
 365     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 366     virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const
 367     {
 368         if ( x ) *x = m_logicalOriginX;
 369         if ( y ) *y = m_logicalOriginY;
 370     }
 371
 372     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 373     virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
 374     {
 375         if ( x ) *x = m_deviceOriginX;
 376         if ( y ) *y = m_deviceOriginY;
 377     }
 378
 379     virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y );
 380
 381     virtual void ComputeScaleAndOrigin();
 382
 383     // this needs to overidden if the axis is inverted
 384     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 385
 386     // ---------------------------------------------------------
 387     // the actual drawing API
 388
 389     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 390                              int style = wxFLOOD_SURFACE) = 0;
 391
 392     virtual void DoGradientFillLinear(const wxRect& rect,
 393                                       const wxColour& initialColour,
 394                                       const wxColour& destColour,
 395                                       wxDirection nDirection = wxEAST);
 396
 397     virtual void DoGradientFillConcentric(const wxRect& rect,
 398                                         const wxColour& initialColour,
 399                                         const wxColour& destColour,
 400                                         const wxPoint& circleCenter);
 401
 402     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0;
 403
 404     virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0;
 405     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0;
 406
 407     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 408                            wxCoord x2, wxCoord y2,
 409                            wxCoord xc, wxCoord yc) = 0;
 410     virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
 411                                  wxCoord width, wxCoord height);
 412     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 413                                    double sa, double ea) = 0;
 414
 415     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0;
 416     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 417                                         wxCoord width, wxCoord height,
 418                                         double radius) = 0;
 419     virtual void DoDrawEllipse(wxCoord x, wxCoord y,
 420                                wxCoord width, wxCoord height) = 0;
 421
 422     virtual void DoCrossHair(wxCoord x, wxCoord y) = 0;
 423
 424     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0;
 425     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 426                               bool useMask = false) = 0;
 427
 428     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0;
 429     virtual void DoDrawRotatedText(const wxString& text,
 430                                    wxCoord x, wxCoord y, double angle) = 0;
 431
 432     virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
 433                         wxCoord width, wxCoord height,
 434                         wxDC *source,
 435                         wxCoord xsrc, wxCoord ysrc,
 436                         int rop = wxCOPY,
 437                         bool useMask = false,
 438                         wxCoord xsrcMask = wxDefaultCoord,
 439                         wxCoord ysrcMask = wxDefaultCoord) = 0;
 440
 441     virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
 442                                wxCoord dstWidth, wxCoord dstHeight,
 443                                wxDC *source,
 444                                wxCoord xsrc, wxCoord ysrc,
 445                                wxCoord srcWidth, wxCoord srcHeight,
 446                                int rop = wxCOPY,
 447                                bool useMask = false,
 448                                wxCoord xsrcMask = wxDefaultCoord,
 449                                wxCoord ysrcMask = wxDefaultCoord);
 450
 451     virtual wxBitmap DoGetAsBitmap(const wxRect *WXUNUSED(subrect)) const
 452         { return wxNullBitmap; }
 453
 454
 455     virtual void DoDrawLines(int n, wxPoint points[],
 456                              wxCoord xoffset, wxCoord yoffset ) = 0;
 457     virtual void DrawLines(const wxPointList *list,
 458                            wxCoord xoffset, wxCoord yoffset );
 459
 460     virtual void DoDrawPolygon(int n, wxPoint points[],
 461                                wxCoord xoffset, wxCoord yoffset,
 462                                int fillStyle = wxODDEVEN_RULE) = 0;
 463     virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
 464                                wxCoord xoffset, wxCoord yoffset,
 465                                int fillStyle);
 466     void DrawPolygon(const wxPointList *list,
 467                      wxCoord xoffset, wxCoord yoffset,
 468                      int fillStyle );
 469
 470
 471 #if wxUSE_SPLINES
 472     virtual void DoDrawSpline(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord x3, wxCoord y3);
 473     virtual void DoDrawSpline(int n, wxPoint points[]);
 474     virtual void DoDrawSpline(const wxPointList *points);
 475 #endif
 476
 477     // ---------------------------------------------------------
 478     // wxMemoryDC Impl API
 479
 480     virtual void DoSelect(const wxBitmap& WXUNUSED(bmp))
 481        { }
 482
 483     virtual const wxBitmap& GetSelectedBitmap() const
 484         { return wxNullBitmap; }
 485     virtual wxBitmap& GetSelectedBitmap()
 486         { return wxNullBitmap; }
 487
 488     // ---------------------------------------------------------
 489     // wxPrinterDC Impl API
 490
 491     virtual wxRect GetPaperRect()
 492         { int w = 0; int h = 0; DoGetSize( &w, &h ); return wxRect(0,0,w,h); }
 493
 494     virtual int GetResolution()
 495         { return -1; }
 496
 497 private:
 498     wxDC       *m_owner;
 499
 500 protected:
 501     // unset clipping variables (after clipping region was destroyed)
 502     void ResetClipping()
 503     {
 504         m_clipping = false;
 505
 506         m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0;
 507     }
 508
 509 #ifdef __WXWINCE__
 510     //! Generic method to draw ellipses, circles and arcs with current pen and brush.
 511     /*! \param x Upper left corner of bounding box.
 512      *  \param y Upper left corner of bounding box.
 513      *  \param w Width of bounding box.
 514      *  \param h Height of bounding box.
 515      *  \param sa Starting angle of arc
 516      *            (counterclockwise, start at 3 o'clock, 360 is full circle).
 517      *  \param ea Ending angle of arc.
 518      *  \param angle Rotation angle, the Arc will be rotated after
 519      *               calculating begin and end.
 520      */
 521     void DrawEllipticArcRot( wxCoord x, wxCoord y,
 522                              wxCoord width, wxCoord height,
 523                              double sa = 0, double ea = 0, double angle = 0 )
 524     { DoDrawEllipticArcRot( x, y, width, height, sa, ea, angle ); }
 525
 526     void DrawEllipticArcRot( const wxPoint& pt,
 527                              const wxSize& sz,
 528                              double sa = 0, double ea = 0, double angle = 0 )
 529     { DoDrawEllipticArcRot( pt.x, pt.y, sz.x, sz.y, sa, ea, angle ); }
 530
 531     void DrawEllipticArcRot( const wxRect& rect,
 532                              double sa = 0, double ea = 0, double angle = 0 )
 533     { DoDrawEllipticArcRot( rect.x, rect.y, rect.width, rect.height, sa, ea, angle ); }
 534
 535     virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y,
 536                                        wxCoord w, wxCoord h,
 537                                        double sa = 0, double ea = 0, double angle = 0 );
 538
 539     //! Rotates points around center.
 540     /*! This is a quite straight method, it calculates in pixels
 541      *  and so it produces rounding errors.
 542      *  \param points The points inside will be rotated.
 543      *  \param angle Rotating angle (counterclockwise, start at 3 o'clock, 360 is full circle).
 544      *  \param center Center of rotation.
 545      */
 546     void Rotate( wxPointList* points, double angle, wxPoint center = wxPoint(0,0) );
 547
 548     // used by DrawEllipticArcRot
 549     // Careful: wxList gets filled with points you have to delete later.
 550     void CalculateEllipticPoints( wxPointList* points,
 551                                   wxCoord xStart, wxCoord yStart,
 552                                   wxCoord w, wxCoord h,
 553                                   double sa, double ea );
 554 #endif // __WXWINCE__
 555
 556
 557     // window on which the DC draws or NULL
 558     wxWindow   *m_window;
 559
 560     // flags
 561     bool m_colour:1;
 562     bool m_ok:1;
 563     bool m_clipping:1;
 564     bool m_isInteractive:1;
 565     bool m_isBBoxValid:1;
 566
 567     // coordinate system variables
 568
 569     wxCoord m_logicalOriginX, m_logicalOriginY;
 570     wxCoord m_deviceOriginX, m_deviceOriginY;           // Usually 0,0, can be change by user
 571
 572     wxCoord m_deviceLocalOriginX, m_deviceLocalOriginY; // non-zero if native top-left corner
 573                                                         // is not at 0,0. This was the case under
 574                                                         // Mac's GrafPorts (coordinate system
 575                                                         // used toplevel window's origin) and
 576                                                         // e.g. for Postscript, where the native
 577                                                         // origin in the bottom left corner.
 578     double m_logicalScaleX, m_logicalScaleY;
 579     double m_userScaleX, m_userScaleY;
 580     double m_scaleX, m_scaleY;  // calculated from logical scale and user scale
 581
 582     int m_signX, m_signY;  // Used by SetAxisOrientation() to invert the axes
 583
 584     // what is a mm on a screen you don't know the size of?
 585     double       m_mm_to_pix_x,
 586                  m_mm_to_pix_y;
 587
 588     // bounding and clipping boxes
 589     wxCoord m_minX, m_minY, m_maxX, m_maxY;
 590     wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2;
 591
 592     int m_logicalFunction;
 593     int m_backgroundMode;
 594     int m_mappingMode;
 595
 596     wxPen             m_pen;
 597     wxBrush           m_brush;
 598     wxBrush           m_backgroundBrush;
 599     wxColour          m_textForegroundColour;
 600     wxColour          m_textBackgroundColour;
 601     wxFont            m_font;
 602
 603 #if wxUSE_PALETTE
 604     wxPalette         m_palette;
 605     bool              m_hasCustomPalette;
 606 #endif // wxUSE_PALETTE
 607
 608 private:
 609     DECLARE_ABSTRACT_CLASS(wxDCImpl)
 610 };
 611
 612
 613 class WXDLLIMPEXP_CORE wxDC : public wxObject
 614 {
 615 public:
 616     virtual ~wxDC() { delete m_pimpl; }
 617
 618     wxDCImpl *GetImpl()
 619         { return m_pimpl; }
 620     const wxDCImpl *GetImpl() const
 621         { return m_pimpl; }
 622
 623     wxWindow *GetWindow() const
 624         { return m_pimpl->GetWindow(); }
 625
 626     bool IsOk() const
 627         { return m_pimpl && m_pimpl->IsOk(); }
 628
 629     // query capabilities
 630
 631     bool CanDrawBitmap() const
 632         { return m_pimpl->CanDrawBitmap(); }
 633     bool CanGetTextExtent() const
 634         { return m_pimpl->CanGetTextExtent(); }
 635
 636     // query dimension, colour deps, resolution
 637
 638     void GetSize(int *width, int *height) const
 639         { m_pimpl->DoGetSize(width, height); }
 640     wxSize GetSize() const
 641         { return m_pimpl->GetSize(); }
 642
 643     void GetSizeMM(int* width, int* height) const
 644         { m_pimpl->DoGetSizeMM(width, height); }
 645     wxSize GetSizeMM() const
 646     {
 647         int w, h;
 648         m_pimpl->DoGetSizeMM(&w, &h);
 649         return wxSize(w, h);
 650     }
 651
 652     int GetDepth() const
 653         { return m_pimpl->GetDepth(); }
 654     wxSize GetPPI() const
 655         { return m_pimpl->GetPPI(); }
 656
 657     virtual int GetResolution()
 658         { return m_pimpl->GetResolution(); }
 659
 660     // Right-To-Left (RTL) modes
 661
 662     void SetLayoutDirection(wxLayoutDirection dir)
 663         { m_pimpl->SetLayoutDirection( dir ); }
 664     wxLayoutDirection GetLayoutDirection() const
 665         { return m_pimpl->GetLayoutDirection(); }
 666
 667     // page and document
 668
 669     bool StartDoc(const wxString& message)
 670         { return m_pimpl->StartDoc(message); }
 671     void EndDoc()
 672         { m_pimpl->EndDoc(); }
 673
 674     void StartPage()
 675         { m_pimpl->StartPage(); }
 676     void EndPage()
 677         { m_pimpl->EndPage(); }
 678
 679     // bounding box
 680
 681     void CalcBoundingBox(wxCoord x, wxCoord y)
 682         { m_pimpl->CalcBoundingBox(x,y); }
 683     void ResetBoundingBox()
 684         { m_pimpl->ResetBoundingBox(); }
 685
 686     wxCoord MinX() const
 687         { return m_pimpl->MinX(); }
 688     wxCoord MaxX() const
 689         { return m_pimpl->MaxX(); }
 690     wxCoord MinY() const
 691         { return m_pimpl->MinY(); }
 692     wxCoord MaxY() const
 693         { return m_pimpl->MaxY(); }
 694
 695     // setters and getters
 696
 697     void SetFont(const wxFont& font)
 698         { m_pimpl->SetFont( font ); }
 699     const wxFont&   GetFont() const
 700         { return m_pimpl->GetFont(); }
 701
 702     void SetPen(const wxPen& pen)
 703         { m_pimpl->SetPen( pen ); }
 704     const wxPen&    GetPen() const
 705         { return m_pimpl->GetPen(); }
 706
 707     void SetBrush(const wxBrush& brush)
 708         { m_pimpl->SetBrush( brush ); }
 709     const wxBrush&  GetBrush() const
 710         { return m_pimpl->GetBrush(); }
 711
 712     void SetBackground(const wxBrush& brush)
 713         { m_pimpl->SetBackground( brush ); }
 714     const wxBrush&  GetBackground() const
 715         { return m_pimpl->GetBackground(); }
 716
 717     void SetBackgroundMode(int mode)
 718         { m_pimpl->SetBackgroundMode( mode ); }
 719     int GetBackgroundMode() const
 720         { return m_pimpl->GetBackgroundMode(); }
 721
 722     void SetTextForeground(const wxColour& colour)
 723         { m_pimpl->SetTextForeground(colour); }
 724     const wxColour& GetTextForeground() const
 725         { return m_pimpl->GetTextForeground(); }
 726
 727     void SetTextBackground(const wxColour& colour)
 728         { m_pimpl->SetTextBackground(colour); }
 729     const wxColour& GetTextBackground() const
 730         { return m_pimpl->GetTextBackground(); }
 731
 732 #if wxUSE_PALETTE
 733     void SetPalette(const wxPalette& palette)
 734         { m_pimpl->SetPalette(palette); }
 735 #endif // wxUSE_PALETTE
 736
 737     // logical functions
 738
 739     void SetLogicalFunction(int function)
 740         { m_pimpl->SetLogicalFunction(function); }
 741     int GetLogicalFunction() const
 742         { return m_pimpl->GetLogicalFunction(); }
 743
 744     // text measurement
 745
 746     wxCoord GetCharHeight() const
 747         { return m_pimpl->GetCharHeight(); }
 748     wxCoord GetCharWidth() const
 749         { return m_pimpl->GetCharWidth(); }
 750
 751     void GetTextExtent(const wxString& string,
 752                        wxCoord *x, wxCoord *y,
 753                        wxCoord *descent = NULL,
 754                        wxCoord *externalLeading = NULL,
 755                        const wxFont *theFont = NULL) const
 756         { m_pimpl->DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
 757
 758     wxSize GetTextExtent(const wxString& string) const
 759     {
 760         wxCoord w, h;
 761         m_pimpl->DoGetTextExtent(string, &w, &h);
 762         return wxSize(w, h);
 763     }
 764
 765     void GetMultiLineTextExtent(const wxString& string,
 766                                         wxCoord *width,
 767                                         wxCoord *height,
 768                                         wxCoord *heightLine = NULL,
 769                                         const wxFont *font = NULL) const
 770         { m_pimpl->GetMultiLineTextExtent( string, width, height, heightLine, font ); }
 771
 772     wxSize GetMultiLineTextExtent(const wxString& string) const
 773     {
 774         wxCoord w, h;
 775         m_pimpl->GetMultiLineTextExtent(string, &w, &h);
 776         return wxSize(w, h);
 777     }
 778
 779     bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
 780         { return m_pimpl->DoGetPartialTextExtents(text, widths); }
 781
 782     // clearing
 783
 784     void Clear()
 785         { m_pimpl->Clear(); }
 786
 787     // clipping
 788
 789     void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 790         { m_pimpl->DoSetClippingRegion(x, y, width, height); }
 791     void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
 792         { m_pimpl->DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
 793     void SetClippingRegion(const wxRect& rect)
 794         { m_pimpl->DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); }
 795     void SetClippingRegion(const wxRegion& region)
 796         { m_pimpl->DoSetClippingRegionAsRegion(region); }
 797
 798     void DestroyClippingRegion()
 799         { m_pimpl->DestroyClippingRegion(); }
 800
 801     void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
 802         { m_pimpl->DoGetClippingBox(x, y, w, h); }
 803     void GetClippingBox(wxRect& rect) const
 804         { m_pimpl->DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); }
 805
 806     // coordinates conversions and transforms
 807
 808     wxCoord DeviceToLogicalX(wxCoord x) const
 809         { return m_pimpl->DeviceToLogicalX(x); }
 810     wxCoord DeviceToLogicalY(wxCoord y) const
 811         { return m_pimpl->DeviceToLogicalY(y); }
 812     wxCoord DeviceToLogicalXRel(wxCoord x) const
 813         { return m_pimpl->DeviceToLogicalXRel(x); }
 814     wxCoord DeviceToLogicalYRel(wxCoord y) const
 815         { return m_pimpl->DeviceToLogicalYRel(y); }
 816     wxCoord LogicalToDeviceX(wxCoord x) const
 817         { return m_pimpl->LogicalToDeviceX(x); }
 818     wxCoord LogicalToDeviceY(wxCoord y) const
 819         { return m_pimpl->LogicalToDeviceY(y); }
 820     wxCoord LogicalToDeviceXRel(wxCoord x) const
 821         { return m_pimpl->LogicalToDeviceXRel(x); }
 822     wxCoord LogicalToDeviceYRel(wxCoord y) const
 823         { return m_pimpl->LogicalToDeviceYRel(y); }
 824
 825     void SetMapMode(int mode)
 826         { m_pimpl->SetMapMode(mode); }
 827     int GetMapMode() const
 828         { return m_pimpl->GetMapMode(); }
 829
 830     void SetUserScale(double x, double y)
 831         { m_pimpl->SetUserScale(x,y); }
 832     void GetUserScale(double *x, double *y) const
 833         { m_pimpl->GetUserScale( x, y ); }
 834
 835     void SetLogicalScale(double x, double y)
 836         { m_pimpl->SetLogicalScale( x, y ); }
 837     void GetLogicalScale(double *x, double *y)
 838         { m_pimpl->GetLogicalScale( x, y ); }
 839
 840     void SetLogicalOrigin(wxCoord x, wxCoord y)
 841         { m_pimpl->SetLogicalOrigin(x,y); }
 842     void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
 843         { m_pimpl->DoGetLogicalOrigin(x, y); }
 844     wxPoint GetLogicalOrigin() const
 845         { wxCoord x, y; m_pimpl->DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
 846
 847     void SetDeviceOrigin(wxCoord x, wxCoord y)
 848         { m_pimpl->SetDeviceOrigin( x, y); }
 849     void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
 850         { m_pimpl->DoGetDeviceOrigin(x, y); }
 851     wxPoint GetDeviceOrigin() const
 852         { wxCoord x, y; m_pimpl->DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
 853
 854     void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
 855         { m_pimpl->SetAxisOrientation(xLeftRight, yBottomUp); }
 856
 857     // mostly internal
 858     void SetDeviceLocalOrigin( wxCoord x, wxCoord y )
 859         { m_pimpl->SetDeviceLocalOrigin( x, y ); }
 860
 861
 862     // draw generic object
 863
 864     void DrawObject(wxDrawObject* drawobject)
 865     {
 866         drawobject->Draw(*this);
 867         CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
 868         CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
 869     }
 870
 871     // -----------------------------------------------
 872     // the actual drawing API
 873
 874     bool FloodFill(wxCoord x, wxCoord y, const wxColour& col,
 875                    int style = wxFLOOD_SURFACE)
 876         { return m_pimpl->DoFloodFill(x, y, col, style); }
 877     bool FloodFill(const wxPoint& pt, const wxColour& col,
 878                    int style = wxFLOOD_SURFACE)
 879         { return m_pimpl->DoFloodFill(pt.x, pt.y, col, style); }
 880
 881     // fill the area specified by rect with a radial gradient, starting from
 882     // initialColour in the centre of the cercle and fading to destColour.
 883     void GradientFillConcentric(const wxRect& rect,
 884                                 const wxColour& initialColour,
 885                                 const wxColour& destColour)
 886         { m_pimpl->DoGradientFillConcentric( rect, initialColour, destColour,
 887                                              wxPoint(rect.GetWidth() / 2,
 888                                                      rect.GetHeight() / 2)); }
 889
 890     void GradientFillConcentric(const wxRect& rect,
 891                                 const wxColour& initialColour,
 892                                 const wxColour& destColour,
 893                                 const wxPoint& circleCenter)
 894         { m_pimpl->DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); }
 895
 896     // fill the area specified by rect with a linear gradient
 897     void GradientFillLinear(const wxRect& rect,
 898                             const wxColour& initialColour,
 899                             const wxColour& destColour,
 900                             wxDirection nDirection = wxEAST)
 901         { m_pimpl->DoGradientFillLinear(rect, initialColour, destColour, nDirection); }
 902
 903     bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
 904         { return m_pimpl->DoGetPixel(x, y, col); }
 905     bool GetPixel(const wxPoint& pt, wxColour *col) const
 906         { return m_pimpl->DoGetPixel(pt.x, pt.y, col); }
 907
 908     void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 909         { m_pimpl->DoDrawLine(x1, y1, x2, y2); }
 910     void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
 911         { m_pimpl->DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
 912
 913     void CrossHair(wxCoord x, wxCoord y)
 914         { m_pimpl->DoCrossHair(x, y); }
 915     void CrossHair(const wxPoint& pt)
 916         { m_pimpl->DoCrossHair(pt.x, pt.y); }
 917
 918     void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
 919                  wxCoord xc, wxCoord yc)
 920         { m_pimpl->DoDrawArc(x1, y1, x2, y2, xc, yc); }
 921     void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
 922         { m_pimpl->DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
 923
 924     void DrawCheckMark(wxCoord x, wxCoord y,
 925                        wxCoord width, wxCoord height)
 926         { m_pimpl->DoDrawCheckMark(x, y, width, height); }
 927     void DrawCheckMark(const wxRect& rect)
 928         { m_pimpl->DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
 929
 930     void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 931                          double sa, double ea)
 932         { m_pimpl->DoDrawEllipticArc(x, y, w, h, sa, ea); }
 933     void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
 934                          double sa, double ea)
 935         { m_pimpl->DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
 936
 937     void DrawPoint(wxCoord x, wxCoord y)
 938         { m_pimpl->DoDrawPoint(x, y); }
 939     void DrawPoint(const wxPoint& pt)
 940         { m_pimpl->DoDrawPoint(pt.x, pt.y); }
 941
 942     void DrawLines(int n, wxPoint points[],
 943                    wxCoord xoffset = 0, wxCoord yoffset = 0)
 944         { m_pimpl->DoDrawLines(n, points, xoffset, yoffset); }
 945     void DrawLines(const wxPointList *list,
 946                    wxCoord xoffset = 0, wxCoord yoffset = 0)
 947         { m_pimpl->DrawLines( list, xoffset, yoffset ); }
 948 #if WXWIN_COMPATIBILITY_2_8
 949     wxDEPRECATED( void DrawLines(const wxList *list,
 950                                  wxCoord xoffset = 0, wxCoord yoffset = 0) );
 951 #endif  // WXWIN_COMPATIBILITY_2_8
 952
 953     void DrawPolygon(int n, wxPoint points[],
 954                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 955                      int fillStyle = wxODDEVEN_RULE)
 956         { m_pimpl->DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
 957     void DrawPolygon(const wxPointList *list,
 958                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 959                      int fillStyle = wxODDEVEN_RULE)
 960         { m_pimpl->DrawPolygon( list, xoffset, yoffset, fillStyle ); }
 961     void DrawPolyPolygon(int n, int count[], wxPoint points[],
 962                          wxCoord xoffset = 0, wxCoord yoffset = 0,
 963                          int fillStyle = wxODDEVEN_RULE)
 964         { m_pimpl->DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); }
 965 #if WXWIN_COMPATIBILITY_2_8
 966     wxDEPRECATED( void DrawPolygon(const wxList *list,
 967                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 968                      int fillStyle = wxODDEVEN_RULE) );
 969 #endif  // WXWIN_COMPATIBILITY_2_8
 970
 971     void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 972         { m_pimpl->DoDrawRectangle(x, y, width, height); }
 973     void DrawRectangle(const wxPoint& pt, const wxSize& sz)
 974         { m_pimpl->DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
 975     void DrawRectangle(const wxRect& rect)
 976         { m_pimpl->DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
 977
 978     void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
 979                               double radius)
 980         { m_pimpl->DoDrawRoundedRectangle(x, y, width, height, radius); }
 981     void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
 982                              double radius)
 983         { m_pimpl->DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
 984     void DrawRoundedRectangle(const wxRect& r, double radius)
 985         { m_pimpl->DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
 986
 987     void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
 988         { m_pimpl->DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
 989     void DrawCircle(const wxPoint& pt, wxCoord radius)
 990         { m_pimpl->DoDrawEllipse(pt.x - radius, pt.y - radius, 2*radius, 2*radius); }
 991
 992     void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 993         { m_pimpl->DoDrawEllipse(x, y, width, height); }
 994     void DrawEllipse(const wxPoint& pt, const wxSize& sz)
 995         { m_pimpl->DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
 996     void DrawEllipse(const wxRect& rect)
 997         { m_pimpl->DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
 998
 999     void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
1000         { m_pimpl->DoDrawIcon(icon, x, y); }
1001     void DrawIcon(const wxIcon& icon, const wxPoint& pt)
1002         { m_pimpl->DoDrawIcon(icon, pt.x, pt.y); }
1003
1004     void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
1005                     bool useMask = false)
1006         { m_pimpl->DoDrawBitmap(bmp, x, y, useMask); }
1007     void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
1008                     bool useMask = false)
1009         { m_pimpl->DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
1010
1011     void DrawText(const wxString& text, wxCoord x, wxCoord y)
1012         { m_pimpl->DoDrawText(text, x, y); }
1013     void DrawText(const wxString& text, const wxPoint& pt)
1014         { m_pimpl->DoDrawText(text, pt.x, pt.y); }
1015
1016     void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
1017         { m_pimpl->DoDrawRotatedText(text, x, y, angle); }
1018     void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
1019         { m_pimpl->DoDrawRotatedText(text, pt.x, pt.y, angle); }
1020
1021     // this version puts both optional bitmap and the text into the given
1022     // rectangle and aligns is as specified by alignment parameter; it also
1023     // will emphasize the character with the given index if it is != -1 and
1024     // return the bounding rectangle if required
1025     void DrawLabel(const wxString& text,
1026                            const wxBitmap& image,
1027                            const wxRect& rect,
1028                            int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1029                            int indexAccel = -1,
1030                            wxRect *rectBounding = NULL);
1031
1032     void DrawLabel(const wxString& text, const wxRect& rect,
1033                    int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1034                    int indexAccel = -1)
1035         { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
1036
1037     bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
1038               wxDC *source, wxCoord xsrc, wxCoord ysrc,
1039               int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
1040     {
1041         return m_pimpl->DoBlit(xdest, ydest, width, height,
1042                       source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
1043     }
1044     bool Blit(const wxPoint& destPt, const wxSize& sz,
1045               wxDC *source, const wxPoint& srcPt,
1046               int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition)
1047     {
1048         return m_pimpl->DoBlit(destPt.x, destPt.y, sz.x, sz.y,
1049                       source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
1050     }
1051
1052     bool StretchBlit(wxCoord dstX, wxCoord dstY,
1053                      wxCoord dstWidth, wxCoord dstHeight,
1054                      wxDC *source,
1055                      wxCoord srcX, wxCoord srcY,
1056                      wxCoord srcWidth, wxCoord srcHeight,
1057                      int rop = wxCOPY, bool useMask = false,
1058                      wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord)
1059     {
1060         return m_pimpl->DoStretchBlit(dstX, dstY, dstWidth, dstHeight,
1061                       source, srcX, srcY, srcWidth, srcHeight, rop, useMask, srcMaskX, srcMaskY);
1062     }
1063     bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize,
1064                      wxDC *source, const wxPoint& srcPt, const wxSize& srcSize,
1065                      int rop = wxCOPY, bool useMask = false, const wxPoint& srcMaskPt = wxDefaultPosition)
1066     {
1067         return m_pimpl->DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y,
1068                       source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y);
1069     }
1070
1071     wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const
1072     {
1073         return m_pimpl->DoGetAsBitmap(subrect);
1074     }
1075
1076 #if wxUSE_SPLINES
1077     void DrawSpline(wxCoord x1, wxCoord y1,
1078                     wxCoord x2, wxCoord y2,
1079                     wxCoord x3, wxCoord y3)
1080         { m_pimpl->DoDrawSpline(x1,y1,x2,y2,x3,y3); }
1081     void DrawSpline(int n, wxPoint points[])
1082         { m_pimpl->DoDrawSpline(n,points); }
1083     void DrawSpline(const wxPointList *points)
1084         { m_pimpl->DoDrawSpline(points); }
1085 #endif // wxUSE_SPLINES
1086
1087
1088 #if WXWIN_COMPATIBILITY_2_8
1089     // for compatibility with the old code when wxCoord was long everywhere
1090     wxDEPRECATED( void GetTextExtent(const wxString& string,
1091                        long *x, long *y,
1092                        long *descent = NULL,
1093                        long *externalLeading = NULL,
1094                        const wxFont *theFont = NULL) const );
1095     wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const );
1096     wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const );
1097     wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const );
1098 #endif  // WXWIN_COMPATIBILITY_2_8
1099
1100
1101 protected:
1102     // ctor takes ownership of the pointer
1103     wxDC(wxDCImpl *pimpl) : m_pimpl(pimpl) { }
1104
1105     wxDCImpl * const m_pimpl;
1106
1107 private:
1108     DECLARE_ABSTRACT_CLASS(wxDC)
1109     DECLARE_NO_COPY_CLASS(wxDC)
1110 };
1111
1112 // ----------------------------------------------------------------------------
1113 // helper class: you can use it to temporarily change the DC text colour and
1114 // restore it automatically when the object goes out of scope
1115 // ----------------------------------------------------------------------------
1116
1117 class WXDLLIMPEXP_CORE wxDCTextColourChanger
1118 {
1119 public:
1120     wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { }
1121
1122     wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc)
1123     {
1124         Set(col);
1125     }
1126
1127     ~wxDCTextColourChanger()
1128     {
1129         if ( m_colFgOld.Ok() )
1130             m_dc.SetTextForeground(m_colFgOld);
1131     }
1132
1133     void Set(const wxColour& col)
1134     {
1135         if ( !m_colFgOld.Ok() )
1136             m_colFgOld = m_dc.GetTextForeground();
1137         m_dc.SetTextForeground(col);
1138     }
1139
1140 private:
1141     wxDC& m_dc;
1142
1143     wxColour m_colFgOld;
1144
1145     DECLARE_NO_COPY_CLASS(wxDCTextColourChanger)
1146 };
1147
1148 // ----------------------------------------------------------------------------
1149 // helper class: you can use it to temporarily change the DC pen and
1150 // restore it automatically when the object goes out of scope
1151 // ----------------------------------------------------------------------------
1152
1153 class WXDLLIMPEXP_CORE wxDCPenChanger
1154 {
1155 public:
1156     wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen())
1157     {
1158         m_dc.SetPen(pen);
1159     }
1160
1161     ~wxDCPenChanger()
1162     {
1163         if ( m_penOld.Ok() )
1164             m_dc.SetPen(m_penOld);
1165     }
1166
1167 private:
1168     wxDC& m_dc;
1169
1170     wxPen m_penOld;
1171
1172     DECLARE_NO_COPY_CLASS(wxDCPenChanger)
1173 };
1174
1175 // ----------------------------------------------------------------------------
1176 // helper class: you can use it to temporarily change the DC brush and
1177 // restore it automatically when the object goes out of scope
1178 // ----------------------------------------------------------------------------
1179
1180 class WXDLLIMPEXP_CORE wxDCBrushChanger
1181 {
1182 public:
1183     wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush())
1184     {
1185         m_dc.SetBrush(brush);
1186     }
1187
1188     ~wxDCBrushChanger()
1189     {
1190         if ( m_brushOld.Ok() )
1191             m_dc.SetBrush(m_brushOld);
1192     }
1193
1194 private:
1195     wxDC& m_dc;
1196
1197     wxBrush m_brushOld;
1198
1199     DECLARE_NO_COPY_CLASS(wxDCBrushChanger)
1200 };
1201
1202 // ----------------------------------------------------------------------------
1203 // another small helper class: sets the clipping region in its ctor and
1204 // destroys it in the dtor
1205 // ----------------------------------------------------------------------------
1206
1207 class WXDLLIMPEXP_CORE wxDCClipper
1208 {
1209 public:
1210     wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc)
1211         { dc.SetClippingRegion(r); }
1212     wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc)
1213         { dc.SetClippingRegion(r.x, r.y, r.width, r.height); }
1214     wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc)
1215         { dc.SetClippingRegion(x, y, w, h); }
1216
1217     ~wxDCClipper() { m_dc.DestroyClippingRegion(); }
1218
1219 private:
1220     wxDC& m_dc;
1221
1222     DECLARE_NO_COPY_CLASS(wxDCClipper)
1223 };
1224
1225 #endif // _WX_DC_H_BASE_