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     void DrawSpline(wxCoord x1, wxCoord y1,
 473                             wxCoord x2, wxCoord y2,
 474                             wxCoord x3, wxCoord y3);
 475     void DrawSpline(int n, wxPoint points[]);
 476     void DrawSpline(const wxPointList *points) { DoDrawSpline(points); }
 477
 478     virtual void DoDrawSpline(const wxPointList *points);
 479 #endif
 480
 481     // ---------------------------------------------------------
 482     // wxMemoryDC Impl API
 483
 484     virtual void DoSelect(const wxBitmap& WXUNUSED(bmp))
 485        { }
 486
 487     virtual const wxBitmap& GetSelectedBitmap() const
 488         { return wxNullBitmap; }
 489     virtual wxBitmap& GetSelectedBitmap()
 490         { return wxNullBitmap; }
 491
 492     // ---------------------------------------------------------
 493     // wxPrinterDC Impl API
 494
 495     virtual wxRect GetPaperRect()
 496         { int w = 0; int h = 0; DoGetSize( &w, &h ); return wxRect(0,0,w,h); }
 497
 498     virtual int GetResolution()
 499         { return -1; }
 500
 501 private:
 502     wxDC       *m_owner;
 503
 504 protected:
 505     // unset clipping variables (after clipping region was destroyed)
 506     void ResetClipping()
 507     {
 508         m_clipping = false;
 509
 510         m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0;
 511     }
 512
 513 #ifdef __WXWINCE__
 514     //! Generic method to draw ellipses, circles and arcs with current pen and brush.
 515     /*! \param x Upper left corner of bounding box.
 516      *  \param y Upper left corner of bounding box.
 517      *  \param w Width of bounding box.
 518      *  \param h Height of bounding box.
 519      *  \param sa Starting angle of arc
 520      *            (counterclockwise, start at 3 o'clock, 360 is full circle).
 521      *  \param ea Ending angle of arc.
 522      *  \param angle Rotation angle, the Arc will be rotated after
 523      *               calculating begin and end.
 524      */
 525     void DrawEllipticArcRot( wxCoord x, wxCoord y,
 526                              wxCoord width, wxCoord height,
 527                              double sa = 0, double ea = 0, double angle = 0 )
 528     { DoDrawEllipticArcRot( x, y, width, height, sa, ea, angle ); }
 529
 530     void DrawEllipticArcRot( const wxPoint& pt,
 531                              const wxSize& sz,
 532                              double sa = 0, double ea = 0, double angle = 0 )
 533     { DoDrawEllipticArcRot( pt.x, pt.y, sz.x, sz.y, sa, ea, angle ); }
 534
 535     void DrawEllipticArcRot( const wxRect& rect,
 536                              double sa = 0, double ea = 0, double angle = 0 )
 537     { DoDrawEllipticArcRot( rect.x, rect.y, rect.width, rect.height, sa, ea, angle ); }
 538
 539     virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y,
 540                                        wxCoord w, wxCoord h,
 541                                        double sa = 0, double ea = 0, double angle = 0 );
 542
 543     //! Rotates points around center.
 544     /*! This is a quite straight method, it calculates in pixels
 545      *  and so it produces rounding errors.
 546      *  \param points The points inside will be rotated.
 547      *  \param angle Rotating angle (counterclockwise, start at 3 o'clock, 360 is full circle).
 548      *  \param center Center of rotation.
 549      */
 550     void Rotate( wxPointList* points, double angle, wxPoint center = wxPoint(0,0) );
 551
 552     // used by DrawEllipticArcRot
 553     // Careful: wxList gets filled with points you have to delete later.
 554     void CalculateEllipticPoints( wxPointList* points,
 555                                   wxCoord xStart, wxCoord yStart,
 556                                   wxCoord w, wxCoord h,
 557                                   double sa, double ea );
 558 #endif // __WXWINCE__
 559
 560
 561     // window on which the DC draws or NULL
 562     wxWindow   *m_window;
 563
 564     // flags
 565     bool m_colour:1;
 566     bool m_ok:1;
 567     bool m_clipping:1;
 568     bool m_isInteractive:1;
 569     bool m_isBBoxValid:1;
 570
 571     // coordinate system variables
 572
 573     wxCoord m_logicalOriginX, m_logicalOriginY;
 574     wxCoord m_deviceOriginX, m_deviceOriginY;           // Usually 0,0, can be change by user
 575
 576     wxCoord m_deviceLocalOriginX, m_deviceLocalOriginY; // non-zero if native top-left corner
 577                                                         // is not at 0,0. This was the case under
 578                                                         // Mac's GrafPorts (coordinate system
 579                                                         // used toplevel window's origin) and
 580                                                         // e.g. for Postscript, where the native
 581                                                         // origin in the bottom left corner.
 582     double m_logicalScaleX, m_logicalScaleY;
 583     double m_userScaleX, m_userScaleY;
 584     double m_scaleX, m_scaleY;  // calculated from logical scale and user scale
 585
 586     int m_signX, m_signY;  // Used by SetAxisOrientation() to invert the axes
 587
 588     // what is a mm on a screen you don't know the size of?
 589     double       m_mm_to_pix_x,
 590                  m_mm_to_pix_y;
 591
 592     // bounding and clipping boxes
 593     wxCoord m_minX, m_minY, m_maxX, m_maxY;
 594     wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2;
 595
 596     int m_logicalFunction;
 597     int m_backgroundMode;
 598     int m_mappingMode;
 599
 600     wxPen             m_pen;
 601     wxBrush           m_brush;
 602     wxBrush           m_backgroundBrush;
 603     wxColour          m_textForegroundColour;
 604     wxColour          m_textBackgroundColour;
 605     wxFont            m_font;
 606
 607 #if wxUSE_PALETTE
 608     wxPalette         m_palette;
 609     bool              m_hasCustomPalette;
 610 #endif // wxUSE_PALETTE
 611
 612 private:
 613     DECLARE_ABSTRACT_CLASS(wxDCImpl)
 614 };
 615
 616
 617 class WXDLLIMPEXP_CORE wxDC : public wxObject
 618 {
 619 public:
 620     virtual ~wxDC() { delete m_pimpl; }
 621
 622     wxDCImpl *GetImpl()
 623         { return m_pimpl; }
 624     const wxDCImpl *GetImpl() const
 625         { return m_pimpl; }
 626
 627     wxWindow *GetWindow() const
 628         { return m_pimpl->GetWindow(); }
 629
 630     bool IsOk() const
 631         { return m_pimpl && m_pimpl->IsOk(); }
 632
 633     // query capabilities
 634
 635     bool CanDrawBitmap() const
 636         { return m_pimpl->CanDrawBitmap(); }
 637     bool CanGetTextExtent() const
 638         { return m_pimpl->CanGetTextExtent(); }
 639
 640     // query dimension, colour deps, resolution
 641
 642     void GetSize(int *width, int *height) const
 643         { m_pimpl->DoGetSize(width, height); }
 644     wxSize GetSize() const
 645         { return m_pimpl->GetSize(); }
 646
 647     void GetSizeMM(int* width, int* height) const
 648         { m_pimpl->DoGetSizeMM(width, height); }
 649     wxSize GetSizeMM() const
 650     {
 651         int w, h;
 652         m_pimpl->DoGetSizeMM(&w, &h);
 653         return wxSize(w, h);
 654     }
 655
 656     int GetDepth() const
 657         { return m_pimpl->GetDepth(); }
 658     wxSize GetPPI() const
 659         { return m_pimpl->GetPPI(); }
 660
 661     virtual int GetResolution()
 662         { return m_pimpl->GetResolution(); }
 663
 664     // Right-To-Left (RTL) modes
 665
 666     void SetLayoutDirection(wxLayoutDirection dir)
 667         { m_pimpl->SetLayoutDirection( dir ); }
 668     wxLayoutDirection GetLayoutDirection() const
 669         { return m_pimpl->GetLayoutDirection(); }
 670
 671     // page and document
 672
 673     bool StartDoc(const wxString& message)
 674         { return m_pimpl->StartDoc(message); }
 675     void EndDoc()
 676         { m_pimpl->EndDoc(); }
 677
 678     void StartPage()
 679         { m_pimpl->StartPage(); }
 680     void EndPage()
 681         { m_pimpl->EndPage(); }
 682
 683     // bounding box
 684
 685     void CalcBoundingBox(wxCoord x, wxCoord y)
 686         { m_pimpl->CalcBoundingBox(x,y); }
 687     void ResetBoundingBox()
 688         { m_pimpl->ResetBoundingBox(); }
 689
 690     wxCoord MinX() const
 691         { return m_pimpl->MinX(); }
 692     wxCoord MaxX() const
 693         { return m_pimpl->MaxX(); }
 694     wxCoord MinY() const
 695         { return m_pimpl->MinY(); }
 696     wxCoord MaxY() const
 697         { return m_pimpl->MaxY(); }
 698
 699     // setters and getters
 700
 701     void SetFont(const wxFont& font)
 702         { m_pimpl->SetFont( font ); }
 703     const wxFont&   GetFont() const
 704         { return m_pimpl->GetFont(); }
 705
 706     void SetPen(const wxPen& pen)
 707         { m_pimpl->SetPen( pen ); }
 708     const wxPen&    GetPen() const
 709         { return m_pimpl->GetPen(); }
 710
 711     void SetBrush(const wxBrush& brush)
 712         { m_pimpl->SetBrush( brush ); }
 713     const wxBrush&  GetBrush() const
 714         { return m_pimpl->GetBrush(); }
 715
 716     void SetBackground(const wxBrush& brush)
 717         { m_pimpl->SetBackground( brush ); }
 718     const wxBrush&  GetBackground() const
 719         { return m_pimpl->GetBackground(); }
 720
 721     void SetBackgroundMode(int mode)
 722         { m_pimpl->SetBackgroundMode( mode ); }
 723     int GetBackgroundMode() const
 724         { return m_pimpl->GetBackgroundMode(); }
 725
 726     void SetTextForeground(const wxColour& colour)
 727         { m_pimpl->SetTextForeground(colour); }
 728     const wxColour& GetTextForeground() const
 729         { return m_pimpl->GetTextForeground(); }
 730
 731     void SetTextBackground(const wxColour& colour)
 732         { m_pimpl->SetTextBackground(colour); }
 733     const wxColour& GetTextBackground() const
 734         { return m_pimpl->GetTextBackground(); }
 735
 736 #if wxUSE_PALETTE
 737     void SetPalette(const wxPalette& palette)
 738         { m_pimpl->SetPalette(palette); }
 739 #endif // wxUSE_PALETTE
 740
 741     // logical functions
 742
 743     void SetLogicalFunction(int function)
 744         { m_pimpl->SetLogicalFunction(function); }
 745     int GetLogicalFunction() const
 746         { return m_pimpl->GetLogicalFunction(); }
 747
 748     // text measurement
 749
 750     wxCoord GetCharHeight() const
 751         { return m_pimpl->GetCharHeight(); }
 752     wxCoord GetCharWidth() const
 753         { return m_pimpl->GetCharWidth(); }
 754
 755     void GetTextExtent(const wxString& string,
 756                        wxCoord *x, wxCoord *y,
 757                        wxCoord *descent = NULL,
 758                        wxCoord *externalLeading = NULL,
 759                        const wxFont *theFont = NULL) const
 760         { m_pimpl->DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
 761
 762     wxSize GetTextExtent(const wxString& string) const
 763     {
 764         wxCoord w, h;
 765         m_pimpl->DoGetTextExtent(string, &w, &h);
 766         return wxSize(w, h);
 767     }
 768
 769     void GetMultiLineTextExtent(const wxString& string,
 770                                         wxCoord *width,
 771                                         wxCoord *height,
 772                                         wxCoord *heightLine = NULL,
 773                                         const wxFont *font = NULL) const
 774         { m_pimpl->GetMultiLineTextExtent( string, width, height, heightLine, font ); }
 775
 776     wxSize GetMultiLineTextExtent(const wxString& string) const
 777     {
 778         wxCoord w, h;
 779         m_pimpl->GetMultiLineTextExtent(string, &w, &h);
 780         return wxSize(w, h);
 781     }
 782
 783     bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
 784         { return m_pimpl->DoGetPartialTextExtents(text, widths); }
 785
 786     // clearing
 787
 788     void Clear()
 789         { m_pimpl->Clear(); }
 790
 791     // clipping
 792
 793     void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 794         { m_pimpl->DoSetClippingRegion(x, y, width, height); }
 795     void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
 796         { m_pimpl->DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
 797     void SetClippingRegion(const wxRect& rect)
 798         { m_pimpl->DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); }
 799     void SetClippingRegion(const wxRegion& region)
 800         { m_pimpl->DoSetClippingRegionAsRegion(region); }
 801
 802     void DestroyClippingRegion()
 803         { m_pimpl->DestroyClippingRegion(); }
 804
 805     void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
 806         { m_pimpl->DoGetClippingBox(x, y, w, h); }
 807     void GetClippingBox(wxRect& rect) const
 808         { m_pimpl->DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); }
 809
 810     // coordinates conversions and transforms
 811
 812     wxCoord DeviceToLogicalX(wxCoord x) const
 813         { return m_pimpl->DeviceToLogicalX(x); }
 814     wxCoord DeviceToLogicalY(wxCoord y) const
 815         { return m_pimpl->DeviceToLogicalY(y); }
 816     wxCoord DeviceToLogicalXRel(wxCoord x) const
 817         { return m_pimpl->DeviceToLogicalXRel(x); }
 818     wxCoord DeviceToLogicalYRel(wxCoord y) const
 819         { return m_pimpl->DeviceToLogicalYRel(y); }
 820     wxCoord LogicalToDeviceX(wxCoord x) const
 821         { return m_pimpl->LogicalToDeviceX(x); }
 822     wxCoord LogicalToDeviceY(wxCoord y) const
 823         { return m_pimpl->LogicalToDeviceY(y); }
 824     wxCoord LogicalToDeviceXRel(wxCoord x) const
 825         { return m_pimpl->LogicalToDeviceXRel(x); }
 826     wxCoord LogicalToDeviceYRel(wxCoord y) const
 827         { return m_pimpl->LogicalToDeviceYRel(y); }
 828
 829     void SetMapMode(int mode)
 830         { m_pimpl->SetMapMode(mode); }
 831     int GetMapMode() const
 832         { return m_pimpl->GetMapMode(); }
 833
 834     void SetUserScale(double x, double y)
 835         { m_pimpl->SetUserScale(x,y); }
 836     void GetUserScale(double *x, double *y) const
 837         { m_pimpl->GetUserScale( x, y ); }
 838
 839     void SetLogicalScale(double x, double y)
 840         { m_pimpl->SetLogicalScale( x, y ); }
 841     void GetLogicalScale(double *x, double *y)
 842         { m_pimpl->GetLogicalScale( x, y ); }
 843
 844     void SetLogicalOrigin(wxCoord x, wxCoord y)
 845         { m_pimpl->SetLogicalOrigin(x,y); }
 846     void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
 847         { m_pimpl->DoGetLogicalOrigin(x, y); }
 848     wxPoint GetLogicalOrigin() const
 849         { wxCoord x, y; m_pimpl->DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
 850
 851     void SetDeviceOrigin(wxCoord x, wxCoord y)
 852         { m_pimpl->SetDeviceOrigin( x, y); }
 853     void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
 854         { m_pimpl->DoGetDeviceOrigin(x, y); }
 855     wxPoint GetDeviceOrigin() const
 856         { wxCoord x, y; m_pimpl->DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
 857
 858     void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
 859         { m_pimpl->SetAxisOrientation(xLeftRight, yBottomUp); }
 860
 861     // mostly internal
 862     void SetDeviceLocalOrigin( wxCoord x, wxCoord y )
 863         { m_pimpl->SetDeviceLocalOrigin( x, y ); }
 864
 865
 866     // draw generic object
 867
 868     void DrawObject(wxDrawObject* drawobject)
 869     {
 870         drawobject->Draw(*this);
 871         CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
 872         CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
 873     }
 874
 875     // -----------------------------------------------
 876     // the actual drawing API
 877
 878     bool FloodFill(wxCoord x, wxCoord y, const wxColour& col,
 879                    int style = wxFLOOD_SURFACE)
 880         { return m_pimpl->DoFloodFill(x, y, col, style); }
 881     bool FloodFill(const wxPoint& pt, const wxColour& col,
 882                    int style = wxFLOOD_SURFACE)
 883         { return m_pimpl->DoFloodFill(pt.x, pt.y, col, style); }
 884
 885     // fill the area specified by rect with a radial gradient, starting from
 886     // initialColour in the centre of the cercle and fading to destColour.
 887     void GradientFillConcentric(const wxRect& rect,
 888                                 const wxColour& initialColour,
 889                                 const wxColour& destColour)
 890         { m_pimpl->DoGradientFillConcentric( rect, initialColour, destColour,
 891                                              wxPoint(rect.GetWidth() / 2,
 892                                                      rect.GetHeight() / 2)); }
 893
 894     void GradientFillConcentric(const wxRect& rect,
 895                                 const wxColour& initialColour,
 896                                 const wxColour& destColour,
 897                                 const wxPoint& circleCenter)
 898         { m_pimpl->DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); }
 899
 900     // fill the area specified by rect with a linear gradient
 901     void GradientFillLinear(const wxRect& rect,
 902                             const wxColour& initialColour,
 903                             const wxColour& destColour,
 904                             wxDirection nDirection = wxEAST)
 905         { m_pimpl->DoGradientFillLinear(rect, initialColour, destColour, nDirection); }
 906
 907     bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
 908         { return m_pimpl->DoGetPixel(x, y, col); }
 909     bool GetPixel(const wxPoint& pt, wxColour *col) const
 910         { return m_pimpl->DoGetPixel(pt.x, pt.y, col); }
 911
 912     void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 913         { m_pimpl->DoDrawLine(x1, y1, x2, y2); }
 914     void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
 915         { m_pimpl->DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
 916
 917     void CrossHair(wxCoord x, wxCoord y)
 918         { m_pimpl->DoCrossHair(x, y); }
 919     void CrossHair(const wxPoint& pt)
 920         { m_pimpl->DoCrossHair(pt.x, pt.y); }
 921
 922     void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
 923                  wxCoord xc, wxCoord yc)
 924         { m_pimpl->DoDrawArc(x1, y1, x2, y2, xc, yc); }
 925     void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
 926         { m_pimpl->DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
 927
 928     void DrawCheckMark(wxCoord x, wxCoord y,
 929                        wxCoord width, wxCoord height)
 930         { m_pimpl->DoDrawCheckMark(x, y, width, height); }
 931     void DrawCheckMark(const wxRect& rect)
 932         { m_pimpl->DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
 933
 934     void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 935                          double sa, double ea)
 936         { m_pimpl->DoDrawEllipticArc(x, y, w, h, sa, ea); }
 937     void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
 938                          double sa, double ea)
 939         { m_pimpl->DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
 940
 941     void DrawPoint(wxCoord x, wxCoord y)
 942         { m_pimpl->DoDrawPoint(x, y); }
 943     void DrawPoint(const wxPoint& pt)
 944         { m_pimpl->DoDrawPoint(pt.x, pt.y); }
 945
 946     void DrawLines(int n, wxPoint points[],
 947                    wxCoord xoffset = 0, wxCoord yoffset = 0)
 948         { m_pimpl->DoDrawLines(n, points, xoffset, yoffset); }
 949     void DrawLines(const wxPointList *list,
 950                    wxCoord xoffset = 0, wxCoord yoffset = 0)
 951         { m_pimpl->DrawLines( list, xoffset, yoffset ); }
 952 #if WXWIN_COMPATIBILITY_2_8
 953     wxDEPRECATED( void DrawLines(const wxList *list,
 954                                  wxCoord xoffset = 0, wxCoord yoffset = 0) );
 955 #endif  // WXWIN_COMPATIBILITY_2_8
 956
 957     void DrawPolygon(int n, wxPoint points[],
 958                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 959                      int fillStyle = wxODDEVEN_RULE)
 960         { m_pimpl->DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
 961     void DrawPolygon(const wxPointList *list,
 962                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 963                      int fillStyle = wxODDEVEN_RULE)
 964         { m_pimpl->DrawPolygon( list, xoffset, yoffset, fillStyle ); }
 965     void DrawPolyPolygon(int n, int count[], wxPoint points[],
 966                          wxCoord xoffset = 0, wxCoord yoffset = 0,
 967                          int fillStyle = wxODDEVEN_RULE)
 968         { m_pimpl->DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); }
 969 #if WXWIN_COMPATIBILITY_2_8
 970     wxDEPRECATED( void DrawPolygon(const wxList *list,
 971                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 972                      int fillStyle = wxODDEVEN_RULE) );
 973 #endif  // WXWIN_COMPATIBILITY_2_8
 974
 975     void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 976         { m_pimpl->DoDrawRectangle(x, y, width, height); }
 977     void DrawRectangle(const wxPoint& pt, const wxSize& sz)
 978         { m_pimpl->DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
 979     void DrawRectangle(const wxRect& rect)
 980         { m_pimpl->DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
 981
 982     void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
 983                               double radius)
 984         { m_pimpl->DoDrawRoundedRectangle(x, y, width, height, radius); }
 985     void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
 986                              double radius)
 987         { m_pimpl->DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
 988     void DrawRoundedRectangle(const wxRect& r, double radius)
 989         { m_pimpl->DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
 990
 991     void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
 992         { m_pimpl->DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
 993     void DrawCircle(const wxPoint& pt, wxCoord radius)
 994         { m_pimpl->DoDrawEllipse(pt.x - radius, pt.y - radius, 2*radius, 2*radius); }
 995
 996     void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 997         { m_pimpl->DoDrawEllipse(x, y, width, height); }
 998     void DrawEllipse(const wxPoint& pt, const wxSize& sz)
 999         { m_pimpl->DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
1000     void DrawEllipse(const wxRect& rect)
1001         { m_pimpl->DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
1002
1003     void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
1004         { m_pimpl->DoDrawIcon(icon, x, y); }
1005     void DrawIcon(const wxIcon& icon, const wxPoint& pt)
1006         { m_pimpl->DoDrawIcon(icon, pt.x, pt.y); }
1007
1008     void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
1009                     bool useMask = false)
1010         { m_pimpl->DoDrawBitmap(bmp, x, y, useMask); }
1011     void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
1012                     bool useMask = false)
1013         { m_pimpl->DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
1014
1015     void DrawText(const wxString& text, wxCoord x, wxCoord y)
1016         { m_pimpl->DoDrawText(text, x, y); }
1017     void DrawText(const wxString& text, const wxPoint& pt)
1018         { m_pimpl->DoDrawText(text, pt.x, pt.y); }
1019
1020     void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
1021         { m_pimpl->DoDrawRotatedText(text, x, y, angle); }
1022     void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
1023         { m_pimpl->DoDrawRotatedText(text, pt.x, pt.y, angle); }
1024
1025     // this version puts both optional bitmap and the text into the given
1026     // rectangle and aligns is as specified by alignment parameter; it also
1027     // will emphasize the character with the given index if it is != -1 and
1028     // return the bounding rectangle if required
1029     void DrawLabel(const wxString& text,
1030                            const wxBitmap& image,
1031                            const wxRect& rect,
1032                            int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1033                            int indexAccel = -1,
1034                            wxRect *rectBounding = NULL);
1035
1036     void DrawLabel(const wxString& text, const wxRect& rect,
1037                    int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1038                    int indexAccel = -1)
1039         { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
1040
1041     bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
1042               wxDC *source, wxCoord xsrc, wxCoord ysrc,
1043               int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
1044     {
1045         return m_pimpl->DoBlit(xdest, ydest, width, height,
1046                       source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
1047     }
1048     bool Blit(const wxPoint& destPt, const wxSize& sz,
1049               wxDC *source, const wxPoint& srcPt,
1050               int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition)
1051     {
1052         return m_pimpl->DoBlit(destPt.x, destPt.y, sz.x, sz.y,
1053                       source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
1054     }
1055
1056     bool StretchBlit(wxCoord dstX, wxCoord dstY,
1057                      wxCoord dstWidth, wxCoord dstHeight,
1058                      wxDC *source,
1059                      wxCoord srcX, wxCoord srcY,
1060                      wxCoord srcWidth, wxCoord srcHeight,
1061                      int rop = wxCOPY, bool useMask = false,
1062                      wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord)
1063     {
1064         return m_pimpl->DoStretchBlit(dstX, dstY, dstWidth, dstHeight,
1065                       source, srcX, srcY, srcWidth, srcHeight, rop, useMask, srcMaskX, srcMaskY);
1066     }
1067     bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize,
1068                      wxDC *source, const wxPoint& srcPt, const wxSize& srcSize,
1069                      int rop = wxCOPY, bool useMask = false, const wxPoint& srcMaskPt = wxDefaultPosition)
1070     {
1071         return m_pimpl->DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y,
1072                       source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y);
1073     }
1074
1075     wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const
1076     {
1077         return m_pimpl->DoGetAsBitmap(subrect);
1078     }
1079
1080 #if wxUSE_SPLINES
1081     void DrawSpline(wxCoord x1, wxCoord y1,
1082                     wxCoord x2, wxCoord y2,
1083                     wxCoord x3, wxCoord y3)
1084         { m_pimpl->DrawSpline(x1,y1,x2,y2,x3,y3); }
1085     void DrawSpline(int n, wxPoint points[])
1086         { m_pimpl->DrawSpline(n,points); }
1087     void DrawSpline(const wxPointList *points)
1088         { m_pimpl->DrawSpline(points); }
1089 #endif // wxUSE_SPLINES
1090
1091
1092 #if WXWIN_COMPATIBILITY_2_8
1093     // for compatibility with the old code when wxCoord was long everywhere
1094     wxDEPRECATED( void GetTextExtent(const wxString& string,
1095                        long *x, long *y,
1096                        long *descent = NULL,
1097                        long *externalLeading = NULL,
1098                        const wxFont *theFont = NULL) const );
1099     wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const );
1100     wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const );
1101     wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const );
1102 #endif  // WXWIN_COMPATIBILITY_2_8
1103
1104
1105 protected:
1106     // ctor takes ownership of the pointer
1107     wxDC(wxDCImpl *pimpl) : m_pimpl(pimpl) { }
1108
1109     wxDCImpl * const m_pimpl;
1110
1111 private:
1112     DECLARE_ABSTRACT_CLASS(wxDC)
1113     DECLARE_NO_COPY_CLASS(wxDC)
1114 };
1115
1116 // ----------------------------------------------------------------------------
1117 // helper class: you can use it to temporarily change the DC text colour and
1118 // restore it automatically when the object goes out of scope
1119 // ----------------------------------------------------------------------------
1120
1121 class WXDLLIMPEXP_CORE wxDCTextColourChanger
1122 {
1123 public:
1124     wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { }
1125
1126     wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc)
1127     {
1128         Set(col);
1129     }
1130
1131     ~wxDCTextColourChanger()
1132     {
1133         if ( m_colFgOld.Ok() )
1134             m_dc.SetTextForeground(m_colFgOld);
1135     }
1136
1137     void Set(const wxColour& col)
1138     {
1139         if ( !m_colFgOld.Ok() )
1140             m_colFgOld = m_dc.GetTextForeground();
1141         m_dc.SetTextForeground(col);
1142     }
1143
1144 private:
1145     wxDC& m_dc;
1146
1147     wxColour m_colFgOld;
1148
1149     DECLARE_NO_COPY_CLASS(wxDCTextColourChanger)
1150 };
1151
1152 // ----------------------------------------------------------------------------
1153 // helper class: you can use it to temporarily change the DC pen and
1154 // restore it automatically when the object goes out of scope
1155 // ----------------------------------------------------------------------------
1156
1157 class WXDLLIMPEXP_CORE wxDCPenChanger
1158 {
1159 public:
1160     wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen())
1161     {
1162         m_dc.SetPen(pen);
1163     }
1164
1165     ~wxDCPenChanger()
1166     {
1167         if ( m_penOld.Ok() )
1168             m_dc.SetPen(m_penOld);
1169     }
1170
1171 private:
1172     wxDC& m_dc;
1173
1174     wxPen m_penOld;
1175
1176     DECLARE_NO_COPY_CLASS(wxDCPenChanger)
1177 };
1178
1179 // ----------------------------------------------------------------------------
1180 // helper class: you can use it to temporarily change the DC brush and
1181 // restore it automatically when the object goes out of scope
1182 // ----------------------------------------------------------------------------
1183
1184 class WXDLLIMPEXP_CORE wxDCBrushChanger
1185 {
1186 public:
1187     wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush())
1188     {
1189         m_dc.SetBrush(brush);
1190     }
1191
1192     ~wxDCBrushChanger()
1193     {
1194         if ( m_brushOld.Ok() )
1195             m_dc.SetBrush(m_brushOld);
1196     }
1197
1198 private:
1199     wxDC& m_dc;
1200
1201     wxBrush m_brushOld;
1202
1203     DECLARE_NO_COPY_CLASS(wxDCBrushChanger)
1204 };
1205
1206 // ----------------------------------------------------------------------------
1207 // another small helper class: sets the clipping region in its ctor and
1208 // destroys it in the dtor
1209 // ----------------------------------------------------------------------------
1210
1211 class WXDLLIMPEXP_CORE wxDCClipper
1212 {
1213 public:
1214     wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc)
1215         { dc.SetClippingRegion(r); }
1216     wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc)
1217         { dc.SetClippingRegion(r.x, r.y, r.width, r.height); }
1218     wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc)
1219         { dc.SetClippingRegion(x, y, w, h); }
1220
1221     ~wxDCClipper() { m_dc.DestroyClippingRegion(); }
1222
1223 private:
1224     wxDC& m_dc;
1225
1226     DECLARE_NO_COPY_CLASS(wxDCClipper)
1227 };
1228
1229 #endif // _WX_DC_H_BASE_