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, wxWindow *window ) = 0;
 120     virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window ) = 0;
 121     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window ) = 0;
 122     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner ) = 0;
 123     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ) = 0;
 124     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ) = 0;
 125     virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner ) = 0;
 126 #if wxUSE_PRINTING_ARCHITECTURE
 127     virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data  ) = 0;
 128 #endif
 129
 130     static void Set(wxDCFactory *factory);
 131     static wxDCFactory *Get();
 132
 133 private:
 134     static wxDCFactory *m_factory;
 135 };
 136
 137 //-----------------------------------------------------------------------------
 138 // wxNativeDCFactory
 139 //-----------------------------------------------------------------------------
 140
 141 class WXDLLIMPEXP_CORE wxNativeDCFactory: public wxDCFactory
 142 {
 143 public:
 144     wxNativeDCFactory() {}
 145
 146     virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window );
 147     virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window );
 148     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window );
 149     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner );
 150     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap );
 151     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc );
 152     virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner );
 153 #if wxUSE_PRINTING_ARCHITECTURE
 154     virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data  );
 155 #endif
 156 };
 157
 158 //-----------------------------------------------------------------------------
 159 // wxDCImpl
 160 //-----------------------------------------------------------------------------
 161
 162 class WXDLLIMPEXP_CORE wxDCImpl: public wxObject
 163 {
 164 public:
 165     wxDCImpl( wxDC *owner );
 166     ~wxDCImpl();
 167
 168     wxDC *GetOwner() const { return m_owner; }
 169
 170     wxWindow* GetWindow() const { return m_window; }
 171
 172     virtual bool IsOk() const { return m_ok; }
 173
 174     // query capabilities
 175
 176     virtual bool CanDrawBitmap() const = 0;
 177     virtual bool CanGetTextExtent() const = 0;
 178
 179     // get Cairo context
 180     virtual void* GetCairoContext() const
 181     {
 182         return NULL;
 183     }
 184
 185     // query dimension, colour deps, resolution
 186
 187     virtual void DoGetSize(int *width, int *height) const = 0;
 188     void GetSize(int *width, int *height) const
 189     {
 190         DoGetSize(width, height);
 191         return ;
 192     }
 193
 194     wxSize GetSize() const
 195     {
 196         int w, h;
 197         DoGetSize(&w, &h);
 198         return wxSize(w, h);
 199     }
 200
 201     virtual void DoGetSizeMM(int* width, int* height) const = 0;
 202
 203     virtual int GetDepth() const = 0;
 204     virtual wxSize GetPPI() const = 0;
 205
 206     // Right-To-Left (RTL) modes
 207
 208     virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) { }
 209     virtual wxLayoutDirection GetLayoutDirection() const  { return wxLayout_Default; }
 210
 211     // page and document
 212
 213     virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; }
 214     virtual void EndDoc() { }
 215
 216     virtual void StartPage() { }
 217     virtual void EndPage() { }
 218
 219     // flushing the content of this dc immediately eg onto screen
 220     virtual void Flush() { }
 221
 222     // bounding box
 223
 224     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
 225     {
 226       if ( m_isBBoxValid )
 227       {
 228          if ( x < m_minX ) m_minX = x;
 229          if ( y < m_minY ) m_minY = y;
 230          if ( x > m_maxX ) m_maxX = x;
 231          if ( y > m_maxY ) m_maxY = y;
 232       }
 233       else
 234       {
 235          m_isBBoxValid = true;
 236
 237          m_minX = x;
 238          m_minY = y;
 239          m_maxX = x;
 240          m_maxY = y;
 241       }
 242     }
 243     void ResetBoundingBox()
 244     {
 245         m_isBBoxValid = false;
 246
 247         m_minX = m_maxX = m_minY = m_maxY = 0;
 248     }
 249
 250     wxCoord MinX() const { return m_minX; }
 251     wxCoord MaxX() const { return m_maxX; }
 252     wxCoord MinY() const { return m_minY; }
 253     wxCoord MaxY() const { return m_maxY; }
 254
 255     // setters and getters
 256
 257     virtual void SetFont(const wxFont& font) = 0;
 258     virtual const wxFont&   GetFont() const { return m_font; }
 259
 260     virtual void SetPen(const wxPen& pen) = 0;
 261     virtual const wxPen&    GetPen() const { return m_pen; }
 262
 263     virtual void SetBrush(const wxBrush& brush) = 0;
 264     virtual const wxBrush&  GetBrush() const { return m_brush; }
 265
 266     virtual void SetBackground(const wxBrush& brush) = 0;
 267     virtual const wxBrush&  GetBackground() const { return m_backgroundBrush; }
 268
 269     virtual void SetBackgroundMode(int mode) = 0;
 270     virtual int GetBackgroundMode() const { return m_backgroundMode; }
 271
 272     virtual void SetTextForeground(const wxColour& colour)
 273         { m_textForegroundColour = colour; }
 274     virtual const wxColour& GetTextForeground() const { return m_textForegroundColour; }
 275
 276     virtual void SetTextBackground(const wxColour& colour)
 277         { m_textBackgroundColour = colour; }
 278     virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; }
 279
 280 #if wxUSE_PALETTE
 281     virtual void SetPalette(const wxPalette& palette) = 0;
 282 #endif // wxUSE_PALETTE
 283
 284     // logical functions
 285
 286     virtual void SetLogicalFunction(int function) = 0;
 287     virtual int GetLogicalFunction() const { return m_logicalFunction; }
 288
 289     // text measurement
 290
 291     virtual wxCoord GetCharHeight() const = 0;
 292     virtual wxCoord GetCharWidth() const = 0;
 293     virtual void DoGetTextExtent(const wxString& string,
 294                                  wxCoord *x, wxCoord *y,
 295                                  wxCoord *descent = NULL,
 296                                  wxCoord *externalLeading = NULL,
 297                                  const wxFont *theFont = NULL) const = 0;
 298     virtual void GetMultiLineTextExtent(const wxString& string,
 299                                         wxCoord *width,
 300                                         wxCoord *height,
 301                                         wxCoord *heightLine = NULL,
 302                                         const wxFont *font = NULL) const;
 303     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 304
 305     // clearing
 306
 307     virtual void Clear() = 0;
 308
 309     // clipping
 310
 311     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 312                                      wxCoord width, wxCoord height) = 0;
 313
 314     // NB: this function works with device coordinates, not the logical ones!
 315     virtual void DoSetDeviceClippingRegion(const wxRegion& region) = 0;
 316
 317     virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
 318                                   wxCoord *w, wxCoord *h) const
 319     {
 320         if ( x )
 321             *x = m_clipX1;
 322         if ( y )
 323             *y = m_clipY1;
 324         if ( w )
 325             *w = m_clipX2 - m_clipX1;
 326         if ( h )
 327             *h = m_clipY2 - m_clipY1;
 328     }
 329
 330     virtual void DestroyClippingRegion() { ResetClipping(); }
 331
 332
 333     // coordinates conversions and transforms
 334
 335     virtual wxCoord DeviceToLogicalX(wxCoord x) const;
 336     virtual wxCoord DeviceToLogicalY(wxCoord y) const;
 337     virtual wxCoord DeviceToLogicalXRel(wxCoord x) const;
 338     virtual wxCoord DeviceToLogicalYRel(wxCoord y) const;
 339     virtual wxCoord LogicalToDeviceX(wxCoord x) const;
 340     virtual wxCoord LogicalToDeviceY(wxCoord y) const;
 341     virtual wxCoord LogicalToDeviceXRel(wxCoord x) const;
 342     virtual wxCoord LogicalToDeviceYRel(wxCoord y) const;
 343
 344     virtual void SetMapMode(int mode);
 345     virtual int GetMapMode() const { return m_mappingMode; }
 346
 347     virtual void SetUserScale(double x, double y);
 348     virtual void GetUserScale(double *x, double *y) const
 349     {
 350         if ( x ) *x = m_userScaleX;
 351         if ( y ) *y = m_userScaleY;
 352     }
 353
 354     virtual void SetLogicalScale(double x, double y);
 355     virtual void GetLogicalScale(double *x, double *y)
 356     {
 357         if ( x ) *x = m_logicalScaleX;
 358         if ( y ) *y = m_logicalScaleY;
 359     }
 360
 361     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 362     virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const
 363     {
 364         if ( x ) *x = m_logicalOriginX;
 365         if ( y ) *y = m_logicalOriginY;
 366     }
 367
 368     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 369     virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
 370     {
 371         if ( x ) *x = m_deviceOriginX;
 372         if ( y ) *y = m_deviceOriginY;
 373     }
 374
 375     virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y );
 376
 377     virtual void ComputeScaleAndOrigin();
 378
 379     // this needs to overidden if the axis is inverted
 380     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 381
 382     // ---------------------------------------------------------
 383     // the actual drawing API
 384
 385     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 386                              int style = wxFLOOD_SURFACE) = 0;
 387
 388     virtual void DoGradientFillLinear(const wxRect& rect,
 389                                       const wxColour& initialColour,
 390                                       const wxColour& destColour,
 391                                       wxDirection nDirection = wxEAST);
 392
 393     virtual void DoGradientFillConcentric(const wxRect& rect,
 394                                         const wxColour& initialColour,
 395                                         const wxColour& destColour,
 396                                         const wxPoint& circleCenter);
 397
 398     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0;
 399
 400     virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0;
 401     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0;
 402
 403     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 404                            wxCoord x2, wxCoord y2,
 405                            wxCoord xc, wxCoord yc) = 0;
 406     virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
 407                                  wxCoord width, wxCoord height);
 408     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 409                                    double sa, double ea) = 0;
 410
 411     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0;
 412     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 413                                         wxCoord width, wxCoord height,
 414                                         double radius) = 0;
 415     virtual void DoDrawEllipse(wxCoord x, wxCoord y,
 416                                wxCoord width, wxCoord height) = 0;
 417
 418     virtual void DoCrossHair(wxCoord x, wxCoord y) = 0;
 419
 420     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0;
 421     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 422                               bool useMask = false) = 0;
 423
 424     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0;
 425     virtual void DoDrawRotatedText(const wxString& text,
 426                                    wxCoord x, wxCoord y, double angle) = 0;
 427
 428     virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
 429                         wxCoord width, wxCoord height,
 430                         wxDC *source,
 431                         wxCoord xsrc, wxCoord ysrc,
 432                         int rop = wxCOPY,
 433                         bool useMask = false,
 434                         wxCoord xsrcMask = wxDefaultCoord,
 435                         wxCoord ysrcMask = wxDefaultCoord) = 0;
 436
 437     virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
 438                                wxCoord dstWidth, wxCoord dstHeight,
 439                                wxDC *source,
 440                                wxCoord xsrc, wxCoord ysrc,
 441                                wxCoord srcWidth, wxCoord srcHeight,
 442                                int rop = wxCOPY,
 443                                bool useMask = false,
 444                                wxCoord xsrcMask = wxDefaultCoord,
 445                                wxCoord ysrcMask = wxDefaultCoord);
 446
 447     virtual wxBitmap DoGetAsBitmap(const wxRect *WXUNUSED(subrect)) const
 448         { return wxNullBitmap; }
 449
 450
 451     virtual void DoDrawLines(int n, wxPoint points[],
 452                              wxCoord xoffset, wxCoord yoffset ) = 0;
 453     virtual void DrawLines(const wxPointList *list,
 454                            wxCoord xoffset, wxCoord yoffset );
 455
 456     virtual void DoDrawPolygon(int n, wxPoint points[],
 457                                wxCoord xoffset, wxCoord yoffset,
 458                                int fillStyle = wxODDEVEN_RULE) = 0;
 459     virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
 460                                wxCoord xoffset, wxCoord yoffset,
 461                                int fillStyle);
 462     void DrawPolygon(const wxPointList *list,
 463                      wxCoord xoffset, wxCoord yoffset,
 464                      int fillStyle );
 465
 466
 467 #if wxUSE_SPLINES
 468     void DrawSpline(wxCoord x1, wxCoord y1,
 469                             wxCoord x2, wxCoord y2,
 470                             wxCoord x3, wxCoord y3);
 471     void DrawSpline(int n, wxPoint points[]);
 472     void DrawSpline(const wxPointList *points) { DoDrawSpline(points); }
 473
 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
 796     // unlike the functions above, the coordinates of the region used in this
 797     // one are in device coordinates, not the logical ones
 798     void SetDeviceClippingRegion(const wxRegion& region)
 799         { m_pimpl->DoSetDeviceClippingRegion(region); }
 800
 801     // this function is deprecated because its name is confusing: you may
 802     // expect it to work with logical coordinates but, in fact, it does exactly
 803     // the same thing as SetDeviceClippingRegion()
 804     //
 805     // please review the code using it and either replace it with calls to
 806     // SetDeviceClippingRegion() or correct it if it was [wrongly] passing
 807     // logical coordinates to this function
 808     wxDEPRECATED_INLINE(void SetClippingRegion(const wxRegion& region),
 809                         SetDeviceClippingRegion(region); )
 810
 811     void DestroyClippingRegion()
 812         { m_pimpl->DestroyClippingRegion(); }
 813
 814     void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
 815         { m_pimpl->DoGetClippingBox(x, y, w, h); }
 816     void GetClippingBox(wxRect& rect) const
 817         { m_pimpl->DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); }
 818
 819     // coordinates conversions and transforms
 820
 821     wxCoord DeviceToLogicalX(wxCoord x) const
 822         { return m_pimpl->DeviceToLogicalX(x); }
 823     wxCoord DeviceToLogicalY(wxCoord y) const
 824         { return m_pimpl->DeviceToLogicalY(y); }
 825     wxCoord DeviceToLogicalXRel(wxCoord x) const
 826         { return m_pimpl->DeviceToLogicalXRel(x); }
 827     wxCoord DeviceToLogicalYRel(wxCoord y) const
 828         { return m_pimpl->DeviceToLogicalYRel(y); }
 829     wxCoord LogicalToDeviceX(wxCoord x) const
 830         { return m_pimpl->LogicalToDeviceX(x); }
 831     wxCoord LogicalToDeviceY(wxCoord y) const
 832         { return m_pimpl->LogicalToDeviceY(y); }
 833     wxCoord LogicalToDeviceXRel(wxCoord x) const
 834         { return m_pimpl->LogicalToDeviceXRel(x); }
 835     wxCoord LogicalToDeviceYRel(wxCoord y) const
 836         { return m_pimpl->LogicalToDeviceYRel(y); }
 837
 838     void SetMapMode(int mode)
 839         { m_pimpl->SetMapMode(mode); }
 840     int GetMapMode() const
 841         { return m_pimpl->GetMapMode(); }
 842
 843     void SetUserScale(double x, double y)
 844         { m_pimpl->SetUserScale(x,y); }
 845     void GetUserScale(double *x, double *y) const
 846         { m_pimpl->GetUserScale( x, y ); }
 847
 848     void SetLogicalScale(double x, double y)
 849         { m_pimpl->SetLogicalScale( x, y ); }
 850     void GetLogicalScale(double *x, double *y)
 851         { m_pimpl->GetLogicalScale( x, y ); }
 852
 853     void SetLogicalOrigin(wxCoord x, wxCoord y)
 854         { m_pimpl->SetLogicalOrigin(x,y); }
 855     void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
 856         { m_pimpl->DoGetLogicalOrigin(x, y); }
 857     wxPoint GetLogicalOrigin() const
 858         { wxCoord x, y; m_pimpl->DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
 859
 860     void SetDeviceOrigin(wxCoord x, wxCoord y)
 861         { m_pimpl->SetDeviceOrigin( x, y); }
 862     void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
 863         { m_pimpl->DoGetDeviceOrigin(x, y); }
 864     wxPoint GetDeviceOrigin() const
 865         { wxCoord x, y; m_pimpl->DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
 866
 867     void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
 868         { m_pimpl->SetAxisOrientation(xLeftRight, yBottomUp); }
 869
 870     // mostly internal
 871     void SetDeviceLocalOrigin( wxCoord x, wxCoord y )
 872         { m_pimpl->SetDeviceLocalOrigin( x, y ); }
 873
 874
 875     // draw generic object
 876
 877     void DrawObject(wxDrawObject* drawobject)
 878     {
 879         drawobject->Draw(*this);
 880         CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
 881         CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
 882     }
 883
 884     // -----------------------------------------------
 885     // the actual drawing API
 886
 887     bool FloodFill(wxCoord x, wxCoord y, const wxColour& col,
 888                    int style = wxFLOOD_SURFACE)
 889         { return m_pimpl->DoFloodFill(x, y, col, style); }
 890     bool FloodFill(const wxPoint& pt, const wxColour& col,
 891                    int style = wxFLOOD_SURFACE)
 892         { return m_pimpl->DoFloodFill(pt.x, pt.y, col, style); }
 893
 894     // fill the area specified by rect with a radial gradient, starting from
 895     // initialColour in the centre of the cercle and fading to destColour.
 896     void GradientFillConcentric(const wxRect& rect,
 897                                 const wxColour& initialColour,
 898                                 const wxColour& destColour)
 899         { m_pimpl->DoGradientFillConcentric( rect, initialColour, destColour,
 900                                              wxPoint(rect.GetWidth() / 2,
 901                                                      rect.GetHeight() / 2)); }
 902
 903     void GradientFillConcentric(const wxRect& rect,
 904                                 const wxColour& initialColour,
 905                                 const wxColour& destColour,
 906                                 const wxPoint& circleCenter)
 907         { m_pimpl->DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); }
 908
 909     // fill the area specified by rect with a linear gradient
 910     void GradientFillLinear(const wxRect& rect,
 911                             const wxColour& initialColour,
 912                             const wxColour& destColour,
 913                             wxDirection nDirection = wxEAST)
 914         { m_pimpl->DoGradientFillLinear(rect, initialColour, destColour, nDirection); }
 915
 916     bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
 917         { return m_pimpl->DoGetPixel(x, y, col); }
 918     bool GetPixel(const wxPoint& pt, wxColour *col) const
 919         { return m_pimpl->DoGetPixel(pt.x, pt.y, col); }
 920
 921     void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 922         { m_pimpl->DoDrawLine(x1, y1, x2, y2); }
 923     void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
 924         { m_pimpl->DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
 925
 926     void CrossHair(wxCoord x, wxCoord y)
 927         { m_pimpl->DoCrossHair(x, y); }
 928     void CrossHair(const wxPoint& pt)
 929         { m_pimpl->DoCrossHair(pt.x, pt.y); }
 930
 931     void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
 932                  wxCoord xc, wxCoord yc)
 933         { m_pimpl->DoDrawArc(x1, y1, x2, y2, xc, yc); }
 934     void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
 935         { m_pimpl->DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
 936
 937     void DrawCheckMark(wxCoord x, wxCoord y,
 938                        wxCoord width, wxCoord height)
 939         { m_pimpl->DoDrawCheckMark(x, y, width, height); }
 940     void DrawCheckMark(const wxRect& rect)
 941         { m_pimpl->DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
 942
 943     void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 944                          double sa, double ea)
 945         { m_pimpl->DoDrawEllipticArc(x, y, w, h, sa, ea); }
 946     void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
 947                          double sa, double ea)
 948         { m_pimpl->DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
 949
 950     void DrawPoint(wxCoord x, wxCoord y)
 951         { m_pimpl->DoDrawPoint(x, y); }
 952     void DrawPoint(const wxPoint& pt)
 953         { m_pimpl->DoDrawPoint(pt.x, pt.y); }
 954
 955     void DrawLines(int n, wxPoint points[],
 956                    wxCoord xoffset = 0, wxCoord yoffset = 0)
 957         { m_pimpl->DoDrawLines(n, points, xoffset, yoffset); }
 958     void DrawLines(const wxPointList *list,
 959                    wxCoord xoffset = 0, wxCoord yoffset = 0)
 960         { m_pimpl->DrawLines( list, xoffset, yoffset ); }
 961 #if WXWIN_COMPATIBILITY_2_8
 962     wxDEPRECATED( void DrawLines(const wxList *list,
 963                                  wxCoord xoffset = 0, wxCoord yoffset = 0) );
 964 #endif  // WXWIN_COMPATIBILITY_2_8
 965
 966     void DrawPolygon(int n, wxPoint points[],
 967                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 968                      int fillStyle = wxODDEVEN_RULE)
 969         { m_pimpl->DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
 970     void DrawPolygon(const wxPointList *list,
 971                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 972                      int fillStyle = wxODDEVEN_RULE)
 973         { m_pimpl->DrawPolygon( list, xoffset, yoffset, fillStyle ); }
 974     void DrawPolyPolygon(int n, int count[], wxPoint points[],
 975                          wxCoord xoffset = 0, wxCoord yoffset = 0,
 976                          int fillStyle = wxODDEVEN_RULE)
 977         { m_pimpl->DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); }
 978 #if WXWIN_COMPATIBILITY_2_8
 979     wxDEPRECATED( void DrawPolygon(const wxList *list,
 980                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 981                      int fillStyle = wxODDEVEN_RULE) );
 982 #endif  // WXWIN_COMPATIBILITY_2_8
 983
 984     void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 985         { m_pimpl->DoDrawRectangle(x, y, width, height); }
 986     void DrawRectangle(const wxPoint& pt, const wxSize& sz)
 987         { m_pimpl->DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
 988     void DrawRectangle(const wxRect& rect)
 989         { m_pimpl->DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
 990
 991     void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
 992                               double radius)
 993         { m_pimpl->DoDrawRoundedRectangle(x, y, width, height, radius); }
 994     void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
 995                              double radius)
 996         { m_pimpl->DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
 997     void DrawRoundedRectangle(const wxRect& r, double radius)
 998         { m_pimpl->DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
 999
1000     void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
1001         { m_pimpl->DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
1002     void DrawCircle(const wxPoint& pt, wxCoord radius)
1003         { m_pimpl->DoDrawEllipse(pt.x - radius, pt.y - radius, 2*radius, 2*radius); }
1004
1005     void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
1006         { m_pimpl->DoDrawEllipse(x, y, width, height); }
1007     void DrawEllipse(const wxPoint& pt, const wxSize& sz)
1008         { m_pimpl->DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
1009     void DrawEllipse(const wxRect& rect)
1010         { m_pimpl->DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
1011
1012     void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
1013         { m_pimpl->DoDrawIcon(icon, x, y); }
1014     void DrawIcon(const wxIcon& icon, const wxPoint& pt)
1015         { m_pimpl->DoDrawIcon(icon, pt.x, pt.y); }
1016
1017     void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
1018                     bool useMask = false)
1019         { m_pimpl->DoDrawBitmap(bmp, x, y, useMask); }
1020     void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
1021                     bool useMask = false)
1022         { m_pimpl->DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
1023
1024     void DrawText(const wxString& text, wxCoord x, wxCoord y)
1025         { m_pimpl->DoDrawText(text, x, y); }
1026     void DrawText(const wxString& text, const wxPoint& pt)
1027         { m_pimpl->DoDrawText(text, pt.x, pt.y); }
1028
1029     void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
1030         { m_pimpl->DoDrawRotatedText(text, x, y, angle); }
1031     void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
1032         { m_pimpl->DoDrawRotatedText(text, pt.x, pt.y, angle); }
1033
1034     // this version puts both optional bitmap and the text into the given
1035     // rectangle and aligns is as specified by alignment parameter; it also
1036     // will emphasize the character with the given index if it is != -1 and
1037     // return the bounding rectangle if required
1038     void DrawLabel(const wxString& text,
1039                            const wxBitmap& image,
1040                            const wxRect& rect,
1041                            int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1042                            int indexAccel = -1,
1043                            wxRect *rectBounding = NULL);
1044
1045     void DrawLabel(const wxString& text, const wxRect& rect,
1046                    int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1047                    int indexAccel = -1)
1048         { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
1049
1050     bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
1051               wxDC *source, wxCoord xsrc, wxCoord ysrc,
1052               int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
1053     {
1054         return m_pimpl->DoBlit(xdest, ydest, width, height,
1055                       source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
1056     }
1057     bool Blit(const wxPoint& destPt, const wxSize& sz,
1058               wxDC *source, const wxPoint& srcPt,
1059               int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition)
1060     {
1061         return m_pimpl->DoBlit(destPt.x, destPt.y, sz.x, sz.y,
1062                       source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
1063     }
1064
1065     bool StretchBlit(wxCoord dstX, wxCoord dstY,
1066                      wxCoord dstWidth, wxCoord dstHeight,
1067                      wxDC *source,
1068                      wxCoord srcX, wxCoord srcY,
1069                      wxCoord srcWidth, wxCoord srcHeight,
1070                      int rop = wxCOPY, bool useMask = false,
1071                      wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord)
1072     {
1073         return m_pimpl->DoStretchBlit(dstX, dstY, dstWidth, dstHeight,
1074                       source, srcX, srcY, srcWidth, srcHeight, rop, useMask, srcMaskX, srcMaskY);
1075     }
1076     bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize,
1077                      wxDC *source, const wxPoint& srcPt, const wxSize& srcSize,
1078                      int rop = wxCOPY, bool useMask = false, const wxPoint& srcMaskPt = wxDefaultPosition)
1079     {
1080         return m_pimpl->DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y,
1081                       source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y);
1082     }
1083
1084     wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const
1085     {
1086         return m_pimpl->DoGetAsBitmap(subrect);
1087     }
1088
1089 #if wxUSE_SPLINES
1090     void DrawSpline(wxCoord x1, wxCoord y1,
1091                     wxCoord x2, wxCoord y2,
1092                     wxCoord x3, wxCoord y3)
1093         { m_pimpl->DrawSpline(x1,y1,x2,y2,x3,y3); }
1094     void DrawSpline(int n, wxPoint points[])
1095         { m_pimpl->DrawSpline(n,points); }
1096     void DrawSpline(const wxPointList *points)
1097         { m_pimpl->DrawSpline(points); }
1098 #endif // wxUSE_SPLINES
1099
1100
1101 #if WXWIN_COMPATIBILITY_2_8
1102     // for compatibility with the old code when wxCoord was long everywhere
1103     wxDEPRECATED( void GetTextExtent(const wxString& string,
1104                        long *x, long *y,
1105                        long *descent = NULL,
1106                        long *externalLeading = NULL,
1107                        const wxFont *theFont = NULL) const );
1108     wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const );
1109     wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const );
1110     wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const );
1111 #endif  // WXWIN_COMPATIBILITY_2_8
1112
1113
1114 protected:
1115     // ctor takes ownership of the pointer
1116     wxDC(wxDCImpl *pimpl) : m_pimpl(pimpl) { }
1117
1118     wxDCImpl * const m_pimpl;
1119
1120 private:
1121     DECLARE_ABSTRACT_CLASS(wxDC)
1122     DECLARE_NO_COPY_CLASS(wxDC)
1123 };
1124
1125 // ----------------------------------------------------------------------------
1126 // helper class: you can use it to temporarily change the DC text colour and
1127 // restore it automatically when the object goes out of scope
1128 // ----------------------------------------------------------------------------
1129
1130 class WXDLLIMPEXP_CORE wxDCTextColourChanger
1131 {
1132 public:
1133     wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { }
1134
1135     wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc)
1136     {
1137         Set(col);
1138     }
1139
1140     ~wxDCTextColourChanger()
1141     {
1142         if ( m_colFgOld.Ok() )
1143             m_dc.SetTextForeground(m_colFgOld);
1144     }
1145
1146     void Set(const wxColour& col)
1147     {
1148         if ( !m_colFgOld.Ok() )
1149             m_colFgOld = m_dc.GetTextForeground();
1150         m_dc.SetTextForeground(col);
1151     }
1152
1153 private:
1154     wxDC& m_dc;
1155
1156     wxColour m_colFgOld;
1157
1158     DECLARE_NO_COPY_CLASS(wxDCTextColourChanger)
1159 };
1160
1161 // ----------------------------------------------------------------------------
1162 // helper class: you can use it to temporarily change the DC pen and
1163 // restore it automatically when the object goes out of scope
1164 // ----------------------------------------------------------------------------
1165
1166 class WXDLLIMPEXP_CORE wxDCPenChanger
1167 {
1168 public:
1169     wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen())
1170     {
1171         m_dc.SetPen(pen);
1172     }
1173
1174     ~wxDCPenChanger()
1175     {
1176         if ( m_penOld.Ok() )
1177             m_dc.SetPen(m_penOld);
1178     }
1179
1180 private:
1181     wxDC& m_dc;
1182
1183     wxPen m_penOld;
1184
1185     DECLARE_NO_COPY_CLASS(wxDCPenChanger)
1186 };
1187
1188 // ----------------------------------------------------------------------------
1189 // helper class: you can use it to temporarily change the DC brush and
1190 // restore it automatically when the object goes out of scope
1191 // ----------------------------------------------------------------------------
1192
1193 class WXDLLIMPEXP_CORE wxDCBrushChanger
1194 {
1195 public:
1196     wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush())
1197     {
1198         m_dc.SetBrush(brush);
1199     }
1200
1201     ~wxDCBrushChanger()
1202     {
1203         if ( m_brushOld.Ok() )
1204             m_dc.SetBrush(m_brushOld);
1205     }
1206
1207 private:
1208     wxDC& m_dc;
1209
1210     wxBrush m_brushOld;
1211
1212     DECLARE_NO_COPY_CLASS(wxDCBrushChanger)
1213 };
1214
1215 // ----------------------------------------------------------------------------
1216 // another small helper class: sets the clipping region in its ctor and
1217 // destroys it in the dtor
1218 // ----------------------------------------------------------------------------
1219
1220 class WXDLLIMPEXP_CORE wxDCClipper
1221 {
1222 public:
1223     wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc)
1224         { dc.SetClippingRegion(r.GetBox()); }
1225     wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc)
1226         { dc.SetClippingRegion(r.x, r.y, r.width, r.height); }
1227     wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc)
1228         { dc.SetClippingRegion(x, y, w, h); }
1229
1230     ~wxDCClipper() { m_dc.DestroyClippingRegion(); }
1231
1232 private:
1233     wxDC& m_dc;
1234
1235     DECLARE_NO_COPY_CLASS(wxDCClipper)
1236 };
1237
1238 #endif // _WX_DC_H_BASE_