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/list.h"            // we use wxList in inline functions
  30 #include "wx/dynarray.h"
  31 #include "wx/math.h"
  32 #include "wx/image.h"
  33
  34   // 1 if using the reorganized DC code
  35 #define wxUSE_NEW_DC 0
  36
  37
  38 #if wxUSE_NEW_DC
  39
  40 //-----------------------------------------------------------------------------
  41 // wxDCFactory
  42 //-----------------------------------------------------------------------------
  43
  44 class WXDLLIMPEXP_FWD_CORE wxImplDC;
  45
  46 class WXDLLIMPEXP_CORE wxDCFactory
  47 {
  48 public:
  49     wxDCFactory() {}
  50     virtual ~wxDCFactory() {}
  51
  52     virtual wxImplDC* CreateWindowDC() = 0;
  53     virtual wxImplDC* CreateWindowDC( wxWindow *window ) = 0;
  54     virtual wxImplDC* CreateClientDC() = 0;
  55     virtual wxImplDC* CreateClientDC( wxWindow *window ) = 0;
  56     virtual wxImplDC* CreatePaintDC() = 0;
  57     virtual wxImplDC* CreatePaintDC( wxWindow *window ) = 0;
  58     virtual wxImplDC* CreateMemoryDC() = 0;
  59     virtual wxImplDC* CreateMemoryDC( wxBitmap &bitmap ) = 0;
  60     virtual wxImplDC* CreateMemoryDC( wxDC *dc ) = 0;
  61
  62     static void SetDCFactory( wxDCFactory *factory );
  63     static wxDCFactory *GetFactory();
  64 private:
  65     static wxDCFactory *m_factory;
  66 };
  67
  68 //-----------------------------------------------------------------------------
  69 // wxNativeDCFactory
  70 //-----------------------------------------------------------------------------
  71
  72 class WXDLLIMPEXP_CORE wxDCFactory
  73 {
  74 public:
  75     wxNativeDCFactory() {}
  76
  77     virtual wxImplDC* CreateWindowDC();
  78     virtual wxImplDC* CreateWindowDC( wxWindow *window );
  79     virtual wxImplDC* CreateClientDC();
  80     virtual wxImplDC* CreateClientDC( wxWindow *window );
  81     virtual wxImplDC* CreatePaintDC();
  82     virtual wxImplDC* CreatePaintDC( wxWindow *window );
  83     virtual wxImplDC* CreateMemoryDC();
  84     virtual wxImplDC* CreateMemoryDC( wxBitmap &bitmap );
  85     virtual wxImplDC* CreateMemoryDC( wxDC *dc );
  86 };
  87
  88 //-----------------------------------------------------------------------------
  89 // wxWindowDC
  90 //-----------------------------------------------------------------------------
  91
  92 class WXDLLIMPEXP_CORE wxWindowDC : public wxDC
  93 {
  94 public:
  95     wxWindowDC();
  96     wxWindowDC( wxWindow *win );
  97
  98 private:
  99     DECLARE_DYNAMIC_CLASS(wxWindowDC)
 100 };
 101
 102 //-----------------------------------------------------------------------------
 103 // wxClientDC
 104 //-----------------------------------------------------------------------------
 105
 106 class WXDLLIMPEXP_CORE wxClientDC : public wxDC
 107 {
 108 public:
 109     wxClientDC();
 110     wxClientDC( wxWindow *win );
 111
 112 private:
 113     DECLARE_DYNAMIC_CLASS(wxClientDC)
 114 };
 115
 116 //-----------------------------------------------------------------------------
 117 // wxMemoryDC
 118 //-----------------------------------------------------------------------------
 119
 120 class WXDLLIMPEXP_CORE wxMemoryDC: public wxDC
 121 {
 122 public:
 123     wxMemoryDC();
 124     wxMemoryDC( wxBitmap& bitmap );
 125     wxMemoryDC( wxDC *dc );
 126
 127 private:
 128     DECLARE_DYNAMIC_CLASS(wxMemoryDC)
 129 };
 130
 131 //-----------------------------------------------------------------------------
 132 // wxPaintDC
 133 //-----------------------------------------------------------------------------
 134
 135 class WXDLLIMPEXP_CORE wxPaintDC : public wxDC
 136 {
 137 public:
 138     wxPaintDC();
 139     wxPaintDC( wxWindow *win );
 140
 141 private:
 142     DECLARE_DYNAMIC_CLASS(wxPaintDC)
 143 };
 144
 145 //-----------------------------------------------------------------------------
 146 // wxImplDC
 147 //-----------------------------------------------------------------------------
 148
 149 class WXDLLIMPEXP_CORE wxImplDC: public wxObject
 150 {
 151 public:
 152     wxImplDC( wxDC *owner );
 153     ~wxImplDC();
 154
 155     wxDC *GetOwner() { return m_owner; }
 156
 157     virtual bool IsOk() const { return m_ok; }
 158
 159     // query capabilities
 160
 161     virtual bool CanDrawBitmap() const = 0;
 162     virtual bool CanGetTextExtent() const = 0;
 163
 164     // query dimension, colour deps, resolution
 165
 166     virtual void DoGetSize(int *width, int *height) const = 0;
 167     virtual void DoGetSizeMM(int* width, int* height) const = 0;
 168
 169     virtual int GetDepth() const = 0;
 170     virtual wxSize GetPPI() const = 0;
 171
 172     // Right-To-Left (RTL) modes
 173
 174     virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) { }
 175     virtual wxLayoutDirection GetLayoutDirection() const  { return wxLayout_Default; }
 176
 177     // page and document
 178
 179     virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; }
 180     virtual void EndDoc() { }
 181
 182     virtual void StartPage() { }
 183     virtual void EndPage() { }
 184
 185     // bounding box
 186
 187     virtual void CalcBoundingBox(wxCoord x, wxCoord y);
 188     {
 189       if ( m_isBBoxValid )
 190       {
 191          if ( x < m_minX ) m_minX = x;
 192          if ( y < m_minY ) m_minY = y;
 193          if ( x > m_maxX ) m_maxX = x;
 194          if ( y > m_maxY ) m_maxY = y;
 195       }
 196       else
 197       {
 198          m_isBBoxValid = true;
 199
 200          m_minX = x;
 201          m_minY = y;
 202          m_maxX = x;
 203          m_maxY = y;
 204       }
 205     }
 206     void ResetBoundingBox();
 207     {
 208         m_isBBoxValid = false;
 209
 210         m_minX = m_maxX = m_minY = m_maxY = 0;
 211     }
 212
 213     wxCoord MinX() const { return m_minX; }
 214     wxCoord MaxX() const { return m_maxX; }
 215     wxCoord MinY() const { return m_minY; }
 216     wxCoord MaxY() const { return m_maxY; }
 217
 218     // setters and getters
 219
 220     virtual void SetFont(const wxFont& font) = 0;
 221     virtual const wxFont&   GetFont() const { return m_font; }
 222
 223     virtual void SetPen(const wxPen& pen) = 0;
 224     virtual const wxPen&    GetPen() const { return m_pen; }
 225
 226     virtual void SetBrush(const wxBrush& brush) = 0;
 227     virtual const wxBrush&  GetBrush() const { return m_brush; }
 228
 229     virtual void SetBackground(const wxBrush& brush) = 0;
 230     virtual const wxBrush&  GetBackground() const { return m_backgroundBrush; }
 231
 232     virtual void SetBackgroundMode(int mode) = 0;
 233     virtual int GetBackgroundMode() const { return m_backgroundMode; }
 234
 235     virtual void SetTextForeground(const wxColour& colour)
 236         { m_textForegroundColour = colour; }
 237     virtual const wxColour& GetTextForeground() const { return m_textForegroundColour; }
 238
 239     virtual void SetTextBackground(const wxColour& colour)
 240         { m_textBackgroundColour = colour; }
 241     virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; }
 242
 243 #if wxUSE_PALETTE
 244     virtual void SetPalette(const wxPalette& palette) = 0;
 245 #endif // wxUSE_PALETTE
 246
 247     // logical functions
 248
 249     virtual void SetLogicalFunction(int function) = 0;
 250     virtual int GetLogicalFunction() const { return m_logicalFunction; }
 251
 252     // text measurement
 253
 254     virtual wxCoord GetCharHeight() const = 0;
 255     virtual wxCoord GetCharWidth() const = 0;
 256     virtual void DoGetTextExtent(const wxString& string,
 257                                  wxCoord *x, wxCoord *y,
 258                                  wxCoord *descent = NULL,
 259                                  wxCoord *externalLeading = NULL,
 260                                  const wxFont *theFont = NULL) const = 0;
 261     virtual void GetMultiLineTextExtent(const wxString& string,
 262                                         wxCoord *width,
 263                                         wxCoord *height,
 264                                         wxCoord *heightLine = NULL,
 265                                         const wxFont *font = NULL) const;
 266     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 267
 268     // clearing
 269
 270     virtual void Clear() = 0;
 271
 272     // clipping
 273
 274     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 275                                      wxCoord width, wxCoord height) = 0;
 276     virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0;
 277
 278     virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
 279                                   wxCoord *w, wxCoord *h) const
 280     {
 281         if ( x )
 282             *x = m_clipX1;
 283         if ( y )
 284             *y = m_clipY1;
 285         if ( w )
 286             *w = m_clipX2 - m_clipX1;
 287         if ( h )
 288             *h = m_clipY2 - m_clipY1;
 289     }
 290
 291     virtual void DestroyClippingRegion() { ResetClipping(); }
 292
 293
 294     // coordinates conversions and transforms
 295
 296     virtual wxCoord DeviceToLogicalX(wxCoord x) const;
 297     virtual wxCoord DeviceToLogicalY(wxCoord y) const;
 298     virtual wxCoord DeviceToLogicalXRel(wxCoord x) const;
 299     virtual wxCoord DeviceToLogicalYRel(wxCoord y) const;
 300     virtual wxCoord LogicalToDeviceX(wxCoord x) const;
 301     virtual wxCoord LogicalToDeviceY(wxCoord y) const;
 302     virtual wxCoord LogicalToDeviceXRel(wxCoord x) const;
 303     virtual wxCoord LogicalToDeviceYRel(wxCoord y) const;
 304
 305     virtual void SetMapMode(int mode);
 306     virtual int GetMapMode() const { return m_mappingMode; }
 307
 308     virtual void SetUserScale(double x, double y);
 309     virtual void GetUserScale(double *x, double *y) const
 310     {
 311         if ( x ) *x = m_userScaleX;
 312         if ( y ) *y = m_userScaleY;
 313     }
 314
 315     virtual void SetLogicalScale(double x, double y);
 316     virtual void GetLogicalScale(double *x, double *y)
 317     {
 318         if ( x ) *x = m_logicalScaleX;
 319         if ( y ) *y = m_logicalScaleY;
 320     }
 321
 322     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 323     virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const
 324     {
 325         if ( x ) *x = m_logicalOriginX;
 326         if ( y ) *y = m_logicalOriginY;
 327     }
 328
 329     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 330     virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
 331     {
 332         if ( x ) *x = m_deviceOriginX;
 333         if ( y ) *y = m_deviceOriginY;
 334     }
 335
 336     virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y );
 337
 338     virtual void ComputeScaleAndOrigin();
 339
 340     // this needs to overidden if the axis is inverted
 341     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 342
 343     // ---------------------------------------------------------
 344     // the actual drawing API
 345
 346     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 347                              int style = wxFLOOD_SURFACE) = 0;
 348
 349     virtual void DoGradientFillLinear(const wxRect& rect,
 350                                       const wxColour& initialColour,
 351                                       const wxColour& destColour,
 352                                       wxDirection nDirection = wxEAST);
 353
 354     virtual void DoGradientFillConcentric(const wxRect& rect,
 355                                         const wxColour& initialColour,
 356                                         const wxColour& destColour,
 357                                         const wxPoint& circleCenter);
 358
 359     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0;
 360
 361     virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0;
 362     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0;
 363
 364     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 365                            wxCoord x2, wxCoord y2,
 366                            wxCoord xc, wxCoord yc) = 0;
 367     virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
 368                                  wxCoord width, wxCoord height);
 369     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 370                                    double sa, double ea) = 0;
 371
 372     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0;
 373     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 374                                         wxCoord width, wxCoord height,
 375                                         double radius) = 0;
 376     virtual void DoDrawEllipse(wxCoord x, wxCoord y,
 377                                wxCoord width, wxCoord height) = 0;
 378
 379     virtual void DoCrossHair(wxCoord x, wxCoord y) = 0;
 380
 381     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0;
 382     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 383                               bool useMask = false) = 0;
 384
 385     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0;
 386     virtual void DoDrawRotatedText(const wxString& text,
 387                                    wxCoord x, wxCoord y, double angle) = 0;
 388
 389     virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
 390                         wxCoord width, wxCoord height,
 391                         wxDC *source,
 392                         wxCoord xsrc, wxCoord ysrc,
 393                         int rop = wxCOPY,
 394                         bool useMask = false,
 395                         wxCoord xsrcMask = wxDefaultCoord,
 396                         wxCoord ysrcMask = wxDefaultCoord) = 0;
 397
 398     virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
 399                                wxCoord dstWidth, wxCoord dstHeight,
 400                                wxDC *source,
 401                                wxCoord xsrc, wxCoord ysrc,
 402                                wxCoord srcWidth, wxCoord srcHeight,
 403                                int rop = wxCOPY,
 404                                bool useMask = false,
 405                                wxCoord xsrcMask = wxDefaultCoord,
 406                                wxCoord ysrcMask = wxDefaultCoord);
 407
 408     virtual wxBitmap DoGetAsBitmap(const wxRect *WXUNUSED(subrect)) const
 409         { return wxNullBitmap; }
 410
 411
 412     virtual void DoDrawLines(int n, wxPoint points[],
 413                              wxCoord xoffset, wxCoord yoffset) = 0;
 414     virtual void DoDrawPolygon(int n, wxPoint points[],
 415                                wxCoord xoffset, wxCoord yoffset,
 416                                int fillStyle = wxODDEVEN_RULE) = 0;
 417     virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
 418                                wxCoord xoffset, wxCoord yoffset,
 419                                int fillStyle);
 420
 421
 422
 423 #if wxUSE_SPLINES
 424     virtual void DoDrawSpline(wxList *points);
 425 #endif
 426
 427 private:
 428     wxDC    *m_owner;
 429
 430 protected:
 431     // unset clipping variables (after clipping region was destroyed)
 432     void ResetClipping()
 433     {
 434         m_clipping = false;
 435
 436         m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0;
 437     }
 438
 439     // flags
 440     bool m_colour:1;
 441     bool m_ok:1;
 442     bool m_clipping:1;
 443     bool m_isInteractive:1;
 444     bool m_isBBoxValid:1;
 445
 446     // coordinate system variables
 447
 448     wxCoord m_logicalOriginX, m_logicalOriginY;
 449     wxCoord m_deviceOriginX, m_deviceOriginY;           // Usually 0,0, can be change by user
 450
 451     wxCoord m_deviceLocalOriginX, m_deviceLocalOriginY; // non-zero if native top-left corner
 452                                                         // is not at 0,0. This was the case under
 453                                                         // Mac's GrafPorts (coordinate system
 454                                                         // used toplevel window's origin) and
 455                                                         // e.g. for Postscript, where the native
 456                                                         // origin in the bottom left corner.
 457     double m_logicalScaleX, m_logicalScaleY;
 458     double m_userScaleX, m_userScaleY;
 459     double m_scaleX, m_scaleY;  // calculated from logical scale and user scale
 460
 461     int m_signX, m_signY;  // Used by SetAxisOrientation() to invert the axes
 462
 463     // what is a mm on a screen you don't know the size of?
 464     double       m_mm_to_pix_x,
 465                  m_mm_to_pix_y;
 466
 467     // bounding and clipping boxes
 468     wxCoord m_minX, m_minY, m_maxX, m_maxY;
 469     wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2;
 470
 471     int m_logicalFunction;
 472     int m_backgroundMode;
 473     int m_mappingMode;
 474
 475     wxPen             m_pen;
 476     wxBrush           m_brush;
 477     wxBrush           m_backgroundBrush;
 478     wxColour          m_textForegroundColour;
 479     wxColour          m_textBackgroundColour;
 480     wxFont            m_font;
 481
 482 #if wxUSE_PALETTE
 483     wxPalette         m_palette;
 484     bool              m_hasCustomPalette;
 485 #endif // wxUSE_PALETTE
 486
 487 private:
 488     DECLARE_ABSTRACT_CLASS(wxImplDC)
 489 }
 490
 491
 492 class wxDC: public wxObject
 493 {
 494 public:
 495     wxDC()   { m_pimpl = NULL; }
 496
 497     bool IsOk() const
 498         { return m_pimpl && m_pimpl->IsOk(); }
 499
 500     // query capabilities
 501
 502     bool CanDrawBitmap() const
 503         { return m_pimpl->CanDrawBitmap(); }
 504     bool CanGetTextExtent() const
 505         { return m_pimpl->CanGetTextExtent(); }
 506
 507     // query dimension, colour deps, resolution
 508
 509     void GetSize(int *width, int *height) const
 510         { m_pimpl->DoGetSize(width, height); }
 511
 512     wxSize GetSize() const
 513     {
 514         int w, h;
 515         m_pimpl->DoGetSize(&w, &h);
 516         return wxSize(w, h);
 517     }
 518
 519     void GetSizeMM(int* width, int* height) const
 520         { m_pimpl->DoGetSizeMM(width, height); }
 521     wxSize GetSizeMM() const
 522     {
 523         int w, h;
 524         m_pimpl->DoGetSizeMM(&w, &h);
 525         return wxSize(w, h);
 526     }
 527
 528     int GetDepth() const
 529         { return m_pimpl->GetDepth(); }
 530     wxSize GetPPI() const
 531         { return m_pimpl->GetPPI(); }
 532
 533     // Right-To-Left (RTL) modes
 534
 535     void SetLayoutDirection(wxLayoutDirection dir)
 536         { m_pimpl->SetLayoutDirection( dir ); }
 537     wxLayoutDirection GetLayoutDirection() const
 538         { return m_pimpl->GetLayoutDirection(); }
 539
 540     // page and document
 541
 542     bool StartDoc(const wxString& message)
 543         { return m_pimpl->StartDoc(message); }
 544     void EndDoc()
 545         { m_pimpl->EndDoc(); }
 546
 547     void StartPage()
 548         { m_pimpl->StartPage(); }
 549     void EndPage()
 550         { m_pimpl->EndPage(); }
 551
 552     // bounding box
 553
 554     void CalcBoundingBox(wxCoord x, wxCoord y)
 555         { m_pimpl->CalcBoundingBox(x,y); }
 556     void ResetBoundingBox()
 557         { m_pimpl->ResetBoundingBox(); }
 558
 559     wxCoord MinX() const
 560         { return m_pimpl->MinX(); }
 561     wxCoord MaxX() const
 562         { return m_pimpl->MaxX(); }
 563     wxCoord MinY() const
 564         { return m_pimpl->MinY(); }
 565     wxCoord MaxY() const
 566         { return m_pimpl->MaxY(); }
 567
 568     // setters and getters
 569
 570     void SetFont(const wxFont& font)
 571         { m_pimpl->SetFont( font ); }
 572     const wxFont&   GetFont() const
 573         { return m_pimpl->GetFont(); }
 574
 575     void SetPen(const wxPen& pen)
 576         { m_pimpl->SetPen( pen ); }
 577     const wxPen&    GetPen() const
 578         { return m_pimpl->GetPen(); }
 579
 580     void SetBrush(const wxBrush& brush)
 581         { m_pimpl->SetBrush( brush ); }
 582     const wxBrush&  GetBrush() const
 583         { return m_pimpl->GetBrush(); }
 584
 585     void SetBackground(const wxBrush& brush)
 586         { m_pimpl->SetBackground( brush ); }
 587     const wxBrush&  GetBackground() const
 588         { return m_pimpl->GetBackground(); }
 589
 590     void SetBackgroundMode(int mode)
 591         { m_pimpl->SetBackground( mode ); }
 592     int GetBackgroundMode() const
 593         { return m_pimpl->GetBackground(); }
 594
 595     void SetTextForeground(const wxColour& colour)
 596         { m_pimpl->SetTextForeground(colour); }
 597     const wxColour& GetTextForeground() const
 598         { return m_pimpl->GetTextForeground(); }
 599
 600     void SetTextBackground(const wxColour& colour)
 601         { m_pimpl->SetTextBackground(colour); }
 602     const wxColour& GetTextBackground() const
 603         { return m_pimpl->GetTextBackground(); }
 604
 605 #if wxUSE_PALETTE
 606     void SetPalette(const wxPalette& palette)
 607         { m_pimpl->SetPalette(palette); }
 608 #endif // wxUSE_PALETTE
 609
 610     // logical functions
 611
 612     void SetLogicalFunction(int function)
 613         { m_pimpl->SetLogicalFunction(function); }
 614     int GetLogicalFunction() const
 615         { return m_pimpl->GetLogicalFunction(); }
 616
 617     // text measurement
 618
 619     wxCoord GetCharHeight() const
 620         { return m_pimpl->GetCharHeight(); }
 621     wxCoord GetCharWidth() const
 622         { return m_pimpl->GetCharWidth(); }
 623
 624     void GetTextExtent(const wxString& string,
 625                        wxCoord *x, wxCoord *y,
 626                        wxCoord *descent = NULL,
 627                        wxCoord *externalLeading = NULL,
 628                        const wxFont *theFont = NULL) const
 629         { m_pimpl->DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
 630
 631     wxSize GetTextExtent(const wxString& string) const
 632     {
 633         wxCoord w, h;
 634         m_pimpl->DoGetTextExtent(string, &w, &h);
 635         return wxSize(w, h);
 636     }
 637
 638     void GetMultiLineTextExtent(const wxString& string,
 639                                         wxCoord *width,
 640                                         wxCoord *height,
 641                                         wxCoord *heightLine = NULL,
 642                                         const wxFont *font = NULL) const
 643         { m_pimpl->GetMultiLineTextExtent( string, width, height, heightLine, font ); }
 644
 645     wxSize GetMultiLineTextExtent(const wxString& string) const
 646     {
 647         wxCoord w, h;
 648         m_pimpl->GetMultiLineTextExtent(string, &w, &h);
 649         return wxSize(w, h);
 650     }
 651
 652     bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
 653         { return m_pimpl->DoGetPartialTextExtents(text, widths); }
 654
 655     // clearing
 656
 657     void Clear()
 658         { m_pimpl->Clear(); }
 659
 660     // clipping
 661
 662     void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 663         { m_pimpl->DoSetClippingRegion(x, y, width, height); }
 664     void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
 665         { m_pimpl->DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
 666     void SetClippingRegion(const wxRect& rect)
 667         { m_pimpl->DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); }
 668     void SetClippingRegion(const wxRegion& region)
 669         { m_pimpl->DoSetClippingRegionAsRegion(region); }
 670
 671     void DestroyClippingRegion()
 672         { m_pimpl->DestroyClippingRegion(); }
 673
 674     void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
 675         { m_pimpl->DoGetClippingBox(x, y, w, h); }
 676     void GetClippingBox(wxRect& rect) const
 677         { m_pimpl->DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); }
 678
 679     // coordinates conversions and transforms
 680
 681     wxCoord DeviceToLogicalX(wxCoord x) const
 682         { return m_pimpl->DeviceToLogicalX(x); }
 683     wxCoord DeviceToLogicalY(wxCoord y) const;
 684         { return m_pimpl->DeviceToLogicalY(y); }
 685     wxCoord DeviceToLogicalXRel(wxCoord x) const;
 686         { return m_pimpl->DeviceToLogicalXRel(x); }
 687     wxCoord DeviceToLogicalYRel(wxCoord y) const;
 688         { return m_pimpl->DeviceToLogicalYRel(y); }
 689     wxCoord LogicalToDeviceX(wxCoord x) const;
 690         { return m_pimpl->LogicalToDeviceX(x); }
 691     wxCoord LogicalToDeviceY(wxCoord y) const;
 692         { return m_pimpl->LogicalToDeviceY(y); }
 693     wxCoord LogicalToDeviceXRel(wxCoord x) const;
 694         { return m_pimpl->LogicalToDeviceXRel(x); }
 695     wxCoord LogicalToDeviceYRel(wxCoord y) const;
 696         { return m_pimpl->LogicalToDeviceYRel(y); }
 697
 698     void SetMapMode(int mode)
 699         { m_pimpl->SetMapMode(mode); }
 700     int GetMapMode() const
 701         { return m_pimpl->GetMapMode(); }
 702
 703     void SetUserScale(double x, double y)
 704         { m_pimpl->SetUserScale(x,y); }
 705     void GetUserScale(double *x, double *y) const
 706         { m_pimpl->GetUserScale( x, y ); }
 707
 708     void SetLogicalScale(double x, double y)
 709         { m_pimpl->SetLogicalScale( x, y ); }
 710     void GetLogicalScale(double *x, double *y)
 711         { m_pimpl->GetLogicalScale( x, y ); }
 712
 713     void SetLogicalOrigin(wxCoord x, wxCoord y)
 714         { m_pimpl->SetLogicalOrigin(x,y); }
 715     void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
 716         { m_pimpl->DoGetLogicalOrigin(x, y); }
 717     wxPoint GetLogicalOrigin() const
 718         { wxCoord x, y; m_pimpl->DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
 719
 720     void SetDeviceOrigin(wxCoord x, wxCoord y)
 721         { m_pimpl->SetDeviceOrigin( x, y); }
 722     void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
 723         { m_pimpl->DoGetDeviceOrigin(x, y); }
 724     wxPoint GetDeviceOrigin() const
 725         { wxCoord x, y; m_pimpl->DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
 726
 727     void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
 728         { m_pimpl->SetAxisOrientation(xLeftRight, yBottomUp); }
 729
 730     // mostly internal
 731     void SetDeviceLocalOrigin( wxCoord x, wxCoord y )
 732         { m_pimpl->SetDeviceLocalOrigin( x, y ); }
 733
 734
 735     // draw generic object
 736
 737     void DrawObject(wxDrawObject* drawobject)
 738     {
 739         drawobject->Draw(*this);
 740         CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
 741         CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
 742     }
 743
 744     // -----------------------------------------------
 745     // the actual drawing API
 746
 747     bool FloodFill(wxCoord x, wxCoord y, const wxColour& col,
 748                    int style = wxFLOOD_SURFACE)
 749         { return m_pimpl->DoFloodFill(x, y, col, style); }
 750     bool FloodFill(const wxPoint& pt, const wxColour& col,
 751                    int style = wxFLOOD_SURFACE)
 752         { return m_pimpl->DoFloodFill(pt.x, pt.y, col, style); }
 753
 754     // fill the area specified by rect with a radial gradient, starting from
 755     // initialColour in the centre of the cercle and fading to destColour.
 756     void GradientFillConcentric(const wxRect& rect,
 757                                 const wxColour& initialColour,
 758                                 const wxColour& destColour)
 759         { m_pimpl->GradientFillConcentric(rect, initialColour, destColour,
 760                                  wxPoint(rect.GetWidth() / 2,
 761                                          rect.GetHeight() / 2)); }
 762
 763     void GradientFillConcentric(const wxRect& rect,
 764                                 const wxColour& initialColour,
 765                                 const wxColour& destColour,
 766                                 const wxPoint& circleCenter)
 767         { m_pimpl->DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); }
 768
 769     // fill the area specified by rect with a linear gradient
 770     void GradientFillLinear(const wxRect& rect,
 771                             const wxColour& initialColour,
 772                             const wxColour& destColour,
 773                             wxDirection nDirection = wxEAST)
 774         { m_pimpl->DoGradientFillLinear(rect, initialColour, destColour, nDirection); }
 775
 776     bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
 777         { return m_pimpl->DoGetPixel(x, y, col); }
 778     bool GetPixel(const wxPoint& pt, wxColour *col) const
 779         { return m_pimpl->DoGetPixel(pt.x, pt.y, col); }
 780
 781     void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 782         { m_pimpl->DoDrawLine(x1, y1, x2, y2); }
 783     void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
 784         { m_pimpl->DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
 785
 786     void CrossHair(wxCoord x, wxCoord y)
 787         { m_pimpl->DoCrossHair(x, y); }
 788     void CrossHair(const wxPoint& pt)
 789         { m_pimpl->DoCrossHair(pt.x, pt.y); }
 790
 791     void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
 792                  wxCoord xc, wxCoord yc)
 793         { m_pimpl->DoDrawArc(x1, y1, x2, y2, xc, yc); }
 794     void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
 795         { m_pimpl->DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
 796
 797     void DrawCheckMark(wxCoord x, wxCoord y,
 798                        wxCoord width, wxCoord height)
 799         { m_pimpl->DoDrawCheckMark(x, y, width, height); }
 800     void DrawCheckMark(const wxRect& rect)
 801         { m_pimpl->DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
 802
 803     void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 804                          double sa, double ea)
 805         { m_pimpl->DoDrawEllipticArc(x, y, w, h, sa, ea); }
 806     void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
 807                          double sa, double ea)
 808         { m_pimpl->DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
 809
 810     void DrawPoint(wxCoord x, wxCoord y)
 811         { m_pimpl->DoDrawPoint(x, y); }
 812     void DrawPoint(const wxPoint& pt)
 813         { m_pimpl->DoDrawPoint(pt.x, pt.y); }
 814
 815     void DrawLines(int n, wxPoint points[],
 816                    wxCoord xoffset = 0, wxCoord yoffset = 0)
 817         { m_pimpl->DoDrawLines(n, points, xoffset, yoffset); }
 818     void DrawLines(const wxList *list,
 819                    wxCoord xoffset = 0, wxCoord yoffset = 0)
 820         { m_pimpl->DrawLines( list, xoffset, yoffset ); }
 821
 822     void DrawPolygon(int n, wxPoint points[],
 823                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 824                      int fillStyle = wxODDEVEN_RULE)
 825         { m_pimpl->DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
 826
 827     void DrawPolygon(const wxList *list,
 828                      wxCoord xoffset = 0, wxCoord yoffset = 0,
 829                      int fillStyle = wxODDEVEN_RULE)
 830         { m_pimpl->DrawPolygon( list, xoffset, yoffset, fillStyle ); }
 831
 832     void DrawPolyPolygon(int n, int count[], wxPoint points[],
 833                          wxCoord xoffset = 0, wxCoord yoffset = 0,
 834                          int fillStyle = wxODDEVEN_RULE)
 835         { m_pimpl->DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); }
 836
 837     void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 838         { m_pimpl->DoDrawRectangle(x, y, width, height); }
 839     void DrawRectangle(const wxPoint& pt, const wxSize& sz)
 840         { m_pimpl->DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
 841     void DrawRectangle(const wxRect& rect)
 842         { m_pimpl->DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
 843
 844     void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
 845                               double radius)
 846         { m_pimpl->DoDrawRoundedRectangle(x, y, width, height, radius); }
 847     void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
 848                              double radius)
 849         { m_pimpl->DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
 850     void DrawRoundedRectangle(const wxRect& r, double radius)
 851         { m_pimpl->DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
 852
 853     void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
 854         { m_pimpl->DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
 855     void DrawCircle(const wxPoint& pt, wxCoord radius)
 856         { m_pimpl->DrawCircle(pt.x, pt.y, radius); }
 857
 858     void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 859         { m_pimpl->DoDrawEllipse(x, y, width, height); }
 860     void DrawEllipse(const wxPoint& pt, const wxSize& sz)
 861         { m_pimpl->DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
 862     void DrawEllipse(const wxRect& rect)
 863         { m_pimpl->DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
 864
 865     void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
 866         { m_pimpl->DoDrawIcon(icon, x, y); }
 867     void DrawIcon(const wxIcon& icon, const wxPoint& pt)
 868         { m_pimpl->DoDrawIcon(icon, pt.x, pt.y); }
 869
 870     void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 871                     bool useMask = false)
 872         { m_pimpl->DoDrawBitmap(bmp, x, y, useMask); }
 873     void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
 874                     bool useMask = false)
 875         { m_pimpl->DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
 876
 877     void DrawText(const wxString& text, wxCoord x, wxCoord y)
 878         { m_pimpl->DoDrawText(text, x, y); }
 879     void DrawText(const wxString& text, const wxPoint& pt)
 880         { m_pimpl->DoDrawText(text, pt.x, pt.y); }
 881
 882     void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
 883         { m_pimpl->DoDrawRotatedText(text, x, y, angle); }
 884     void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
 885         { m_pimpl->DoDrawRotatedText(text, pt.x, pt.y, angle); }
 886
 887     // this version puts both optional bitmap and the text into the given
 888     // rectangle and aligns is as specified by alignment parameter; it also
 889     // will emphasize the character with the given index if it is != -1 and
 890     // return the bounding rectangle if required
 891     void DrawLabel(const wxString& text,
 892                            const wxBitmap& image,
 893                            const wxRect& rect,
 894                            int alignment = wxALIGN_LEFT | wxALIGN_TOP,
 895                            int indexAccel = -1,
 896                            wxRect *rectBounding = NULL)
 897         { m_pimpl->DrawLabel( text, image, rect, alignment, indexAccel, rectBounding ); }
 898
 899     void DrawLabel(const wxString& text, const wxRect& rect,
 900                    int alignment = wxALIGN_LEFT | wxALIGN_TOP,
 901                    int indexAccel = -1)
 902         { m_pimpl->DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
 903
 904     bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 905               wxDC *source, wxCoord xsrc, wxCoord ysrc,
 906               int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
 907     {
 908         return m_pimpl->DoBlit(xdest, ydest, width, height,
 909                       source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
 910     }
 911     bool Blit(const wxPoint& destPt, const wxSize& sz,
 912               wxDC *source, const wxPoint& srcPt,
 913               int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition)
 914     {
 915         return m_pimpl->DoBlit(destPt.x, destPt.y, sz.x, sz.y,
 916                       source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
 917     }
 918
 919     bool StretchBlit(wxCoord dstX, wxCoord dstY,
 920                      wxCoord dstWidth, wxCoord dstHeight,
 921                      wxDC *source,
 922                      wxCoord srcX, wxCoord srcY,
 923                      wxCoord srcWidth, wxCoord srcHeight,
 924                      int rop = wxCOPY, bool useMask = false,
 925                      wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord)
 926     {
 927         return m_pimpl->DoStretchBlit(dstX, dstY, dstWidth, dstHeight,
 928                       source, srcX, srcY, srcWidth, srcHeight, rop, useMask, srcMaskX, srcMaskY);
 929     }
 930     bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize,
 931                      wxDC *source, const wxPoint& srcPt, const wxSize& srcSize,
 932                      int rop = wxCOPY, bool useMask = false, const wxPoint& srcMaskPt = wxDefaultPosition)
 933     {
 934         return m_pimpl->DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y,
 935                       source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y);
 936     }
 937
 938     wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const
 939     {
 940         return m_pimpl->DoGetAsBitmap(subrect);
 941     }
 942
 943 #if wxUSE_SPLINES
 944     // TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?)
 945     void DrawSpline(wxCoord x1, wxCoord y1,
 946                     wxCoord x2, wxCoord y2,
 947                     wxCoord x3, wxCoord y3)
 948         { m_pimpl->DrawSpline(x1,y1,x2,y2,x3,y3); }
 949     void DrawSpline(int n, wxPoint points[])
 950         { m_pimpl->DrawSpline(n,points); }
 951
 952     void DrawSpline(wxList *points)
 953         { m_pimpl->DoDrawSpline(points); }
 954 #endif // wxUSE_SPLINES
 955
 956
 957 #if WXWIN_COMPATIBILITY_2_8
 958     // for compatibility with the old code when wxCoord was long everywhere
 959     wxDEPRECATED( void GetTextExtent(const wxString& string,
 960                        long *x, long *y,
 961                        long *descent = NULL,
 962                        long *externalLeading = NULL,
 963                        const wxFont *theFont = NULL) const );
 964     wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const );
 965     wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const );
 966     wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const );
 967 #endif  // WXWIN_COMPATIBILITY_2_8
 968
 969
 970 protected:
 971     wxImplDC    *m_pimpl;
 972
 973 private:
 974     DECLARE_ABSTRACT_CLASS(wxImplDC)
 975 }
 976
 977
 978 #else  // wxUSE_NEW_DC
 979
 980
 981 class WXDLLIMPEXP_FWD_CORE wxDC;
 982 class WXDLLIMPEXP_FWD_CORE wxDCBase;
 983
 984 class WXDLLEXPORT wxDrawObject
 985 {
 986 public:
 987
 988     wxDrawObject()
 989         : m_isBBoxValid(false)
 990         , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
 991     { }
 992
 993     virtual ~wxDrawObject() { }
 994
 995     virtual void Draw(wxDCBase&) const { }
 996
 997     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
 998     {
 999       if ( m_isBBoxValid )
1000       {
1001          if ( x < m_minX ) m_minX = x;
1002          if ( y < m_minY ) m_minY = y;
1003          if ( x > m_maxX ) m_maxX = x;
1004          if ( y > m_maxY ) m_maxY = y;
1005       }
1006       else
1007       {
1008          m_isBBoxValid = true;
1009
1010          m_minX = x;
1011          m_minY = y;
1012          m_maxX = x;
1013          m_maxY = y;
1014       }
1015     }
1016
1017     void ResetBoundingBox()
1018     {
1019         m_isBBoxValid = false;
1020
1021         m_minX = m_maxX = m_minY = m_maxY = 0;
1022     }
1023
1024     // Get the final bounding box of the PostScript or Metafile picture.
1025
1026     wxCoord MinX() const { return m_minX; }
1027     wxCoord MaxX() const { return m_maxX; }
1028     wxCoord MinY() const { return m_minY; }
1029     wxCoord MaxY() const { return m_maxY; }
1030
1031     //to define the type of object for derived objects
1032     virtual int GetType()=0;
1033
1034 protected:
1035     //for boundingbox calculation
1036     bool m_isBBoxValid:1;
1037     //for boundingbox calculation
1038     wxCoord m_minX, m_minY, m_maxX, m_maxY;
1039 };
1040
1041 // ---------------------------------------------------------------------------
1042 // global variables
1043 // ---------------------------------------------------------------------------
1044
1045 // ---------------------------------------------------------------------------
1046 // wxDC is the device context - object on which any drawing is done
1047 // ---------------------------------------------------------------------------
1048
1049 class WXDLLEXPORT wxDCBase : public wxObject
1050 {
1051 public:
1052     wxDCBase();
1053     virtual ~wxDCBase();
1054
1055     // graphic primitives
1056     // ------------------
1057
1058     virtual void DrawObject(wxDrawObject* drawobject)
1059     {
1060         drawobject->Draw(*this);
1061         CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
1062         CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
1063     }
1064
1065     bool FloodFill(wxCoord x, wxCoord y, const wxColour& col,
1066                    int style = wxFLOOD_SURFACE)
1067         { return DoFloodFill(x, y, col, style); }
1068     bool FloodFill(const wxPoint& pt, const wxColour& col,
1069                    int style = wxFLOOD_SURFACE)
1070         { return DoFloodFill(pt.x, pt.y, col, style); }
1071
1072     // fill the area specified by rect with a radial gradient, starting from
1073     // initialColour in the centre of the cercle and fading to destColour.
1074     void GradientFillConcentric(const wxRect& rect,
1075                                 const wxColour& initialColour,
1076                                 const wxColour& destColour)
1077         { GradientFillConcentric(rect, initialColour, destColour,
1078                                  wxPoint(rect.GetWidth() / 2,
1079                                          rect.GetHeight() / 2)); }
1080
1081     void GradientFillConcentric(const wxRect& rect,
1082                                 const wxColour& initialColour,
1083                                 const wxColour& destColour,
1084                                 const wxPoint& circleCenter)
1085         { DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); }
1086
1087     // fill the area specified by rect with a linear gradient
1088     void GradientFillLinear(const wxRect& rect,
1089                             const wxColour& initialColour,
1090                             const wxColour& destColour,
1091                             wxDirection nDirection = wxEAST)
1092         { DoGradientFillLinear(rect, initialColour, destColour, nDirection); }
1093
1094     bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
1095         { return DoGetPixel(x, y, col); }
1096     bool GetPixel(const wxPoint& pt, wxColour *col) const
1097         { return DoGetPixel(pt.x, pt.y, col); }
1098
1099     void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
1100         { DoDrawLine(x1, y1, x2, y2); }
1101     void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
1102         { DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
1103
1104     void CrossHair(wxCoord x, wxCoord y)
1105         { DoCrossHair(x, y); }
1106     void CrossHair(const wxPoint& pt)
1107         { DoCrossHair(pt.x, pt.y); }
1108
1109     void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
1110                  wxCoord xc, wxCoord yc)
1111         { DoDrawArc(x1, y1, x2, y2, xc, yc); }
1112     void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
1113         { DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
1114
1115     void DrawCheckMark(wxCoord x, wxCoord y,
1116                        wxCoord width, wxCoord height)
1117         { DoDrawCheckMark(x, y, width, height); }
1118     void DrawCheckMark(const wxRect& rect)
1119         { DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
1120
1121     void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
1122                          double sa, double ea)
1123         { DoDrawEllipticArc(x, y, w, h, sa, ea); }
1124     void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
1125                          double sa, double ea)
1126         { DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
1127
1128     void DrawPoint(wxCoord x, wxCoord y)
1129         { DoDrawPoint(x, y); }
1130     void DrawPoint(const wxPoint& pt)
1131         { DoDrawPoint(pt.x, pt.y); }
1132
1133     void DrawLines(int n, wxPoint points[],
1134                    wxCoord xoffset = 0, wxCoord yoffset = 0)
1135         { DoDrawLines(n, points, xoffset, yoffset); }
1136     void DrawLines(const wxList *list,
1137                    wxCoord xoffset = 0, wxCoord yoffset = 0);
1138
1139     void DrawPolygon(int n, wxPoint points[],
1140                      wxCoord xoffset = 0, wxCoord yoffset = 0,
1141                      int fillStyle = wxODDEVEN_RULE)
1142         { DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
1143
1144     void DrawPolygon(const wxList *list,
1145                      wxCoord xoffset = 0, wxCoord yoffset = 0,
1146                      int fillStyle = wxODDEVEN_RULE);
1147
1148     void DrawPolyPolygon(int n, int count[], wxPoint points[],
1149                          wxCoord xoffset = 0, wxCoord yoffset = 0,
1150                          int fillStyle = wxODDEVEN_RULE)
1151         { DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); }
1152
1153     void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
1154         { DoDrawRectangle(x, y, width, height); }
1155     void DrawRectangle(const wxPoint& pt, const wxSize& sz)
1156         { DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
1157     void DrawRectangle(const wxRect& rect)
1158         { DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
1159
1160     void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
1161                               double radius)
1162         { DoDrawRoundedRectangle(x, y, width, height, radius); }
1163     void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
1164                              double radius)
1165         { DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
1166     void DrawRoundedRectangle(const wxRect& r, double radius)
1167         { DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
1168
1169     void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
1170         { DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
1171     void DrawCircle(const wxPoint& pt, wxCoord radius)
1172         { DrawCircle(pt.x, pt.y, radius); }
1173
1174     void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
1175         { DoDrawEllipse(x, y, width, height); }
1176     void DrawEllipse(const wxPoint& pt, const wxSize& sz)
1177         { DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
1178     void DrawEllipse(const wxRect& rect)
1179         { DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
1180
1181     void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
1182         { DoDrawIcon(icon, x, y); }
1183     void DrawIcon(const wxIcon& icon, const wxPoint& pt)
1184         { DoDrawIcon(icon, pt.x, pt.y); }
1185
1186     void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
1187                     bool useMask = false)
1188         { DoDrawBitmap(bmp, x, y, useMask); }
1189     void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
1190                     bool useMask = false)
1191         { DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
1192
1193     void DrawText(const wxString& text, wxCoord x, wxCoord y)
1194         { DoDrawText(text, x, y); }
1195     void DrawText(const wxString& text, const wxPoint& pt)
1196         { DoDrawText(text, pt.x, pt.y); }
1197
1198     void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
1199         { DoDrawRotatedText(text, x, y, angle); }
1200     void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
1201         { DoDrawRotatedText(text, pt.x, pt.y, angle); }
1202
1203     // this version puts both optional bitmap and the text into the given
1204     // rectangle and aligns is as specified by alignment parameter; it also
1205     // will emphasize the character with the given index if it is != -1 and
1206     // return the bounding rectangle if required
1207     virtual void DrawLabel(const wxString& text,
1208                            const wxBitmap& image,
1209                            const wxRect& rect,
1210                            int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1211                            int indexAccel = -1,
1212                            wxRect *rectBounding = NULL);
1213
1214     void DrawLabel(const wxString& text, const wxRect& rect,
1215                    int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1216                    int indexAccel = -1)
1217         { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
1218
1219     bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
1220               wxDC *source, wxCoord xsrc, wxCoord ysrc,
1221               int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
1222     {
1223         return DoBlit(xdest, ydest, width, height,
1224                       source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
1225     }
1226     bool Blit(const wxPoint& destPt, const wxSize& sz,
1227               wxDC *source, const wxPoint& srcPt,
1228               int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition)
1229     {
1230         return DoBlit(destPt.x, destPt.y, sz.x, sz.y,
1231                       source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
1232     }
1233
1234     bool StretchBlit(wxCoord dstX, wxCoord dstY,
1235                      wxCoord dstWidth, wxCoord dstHeight,
1236                      wxDC *source,
1237                      wxCoord srcX, wxCoord srcY,
1238                      wxCoord srcWidth, wxCoord srcHeight,
1239                      int rop = wxCOPY, bool useMask = false,
1240                      wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord)
1241     {
1242         return DoStretchBlit(dstX, dstY, dstWidth, dstHeight,
1243                       source, srcX, srcY, srcWidth, srcHeight, rop, useMask, srcMaskX, srcMaskY);
1244     }
1245     bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize,
1246                      wxDC *source, const wxPoint& srcPt, const wxSize& srcSize,
1247                      int rop = wxCOPY, bool useMask = false, const wxPoint& srcMaskPt = wxDefaultPosition)
1248     {
1249         return DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y,
1250                       source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y);
1251     }
1252
1253     wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const
1254     {
1255         return DoGetAsBitmap(subrect);
1256     }
1257
1258 #if wxUSE_SPLINES
1259     // TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?)
1260     void DrawSpline(wxCoord x1, wxCoord y1,
1261                     wxCoord x2, wxCoord y2,
1262                     wxCoord x3, wxCoord y3);
1263     void DrawSpline(int n, wxPoint points[]);
1264
1265     void DrawSpline(wxList *points) { DoDrawSpline(points); }
1266 #endif // wxUSE_SPLINES
1267
1268     // Eventually we will have wxUSE_GENERIC_DRAWELLIPSE
1269 #ifdef __WXWINCE__
1270     //! Generic method to draw ellipses, circles and arcs with current pen and brush.
1271     /*! \param x Upper left corner of bounding box.
1272      *  \param y Upper left corner of bounding box.
1273      *  \param w Width of bounding box.
1274      *  \param h Height of bounding box.
1275      *  \param sa Starting angle of arc
1276      *            (counterclockwise, start at 3 o'clock, 360 is full circle).
1277      *  \param ea Ending angle of arc.
1278      *  \param angle Rotation angle, the Arc will be rotated after
1279      *               calculating begin and end.
1280      */
1281     void DrawEllipticArcRot( wxCoord x, wxCoord y,
1282                              wxCoord width, wxCoord height,
1283                              double sa = 0, double ea = 0, double angle = 0 )
1284     { DoDrawEllipticArcRot( x, y, width, height, sa, ea, angle ); }
1285
1286     void DrawEllipticArcRot( const wxPoint& pt,
1287                              const wxSize& sz,
1288                              double sa = 0, double ea = 0, double angle = 0 )
1289     { DoDrawEllipticArcRot( pt.x, pt.y, sz.x, sz.y, sa, ea, angle ); }
1290
1291     void DrawEllipticArcRot( const wxRect& rect,
1292                              double sa = 0, double ea = 0, double angle = 0 )
1293     { DoDrawEllipticArcRot( rect.x, rect.y, rect.width, rect.height, sa, ea, angle ); }
1294
1295     virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y,
1296                                        wxCoord w, wxCoord h,
1297                                        double sa = 0, double ea = 0, double angle = 0 );
1298
1299     //! Rotates points around center.
1300     /*! This is a quite straight method, it calculates in pixels
1301      *  and so it produces rounding errors.
1302      *  \param points The points inside will be rotated.
1303      *  \param angle Rotating angle (counterclockwise, start at 3 o'clock, 360 is full circle).
1304      *  \param center Center of rotation.
1305      */
1306     void Rotate( wxList* points, double angle, wxPoint center = wxPoint(0,0) );
1307
1308     // used by DrawEllipticArcRot
1309     // Careful: wxList gets filled with points you have to delete later.
1310     void CalculateEllipticPoints( wxList* points,
1311                                   wxCoord xStart, wxCoord yStart,
1312                                   wxCoord w, wxCoord h,
1313                                   double sa, double ea );
1314 #endif
1315
1316     // global DC operations
1317     // --------------------
1318
1319     virtual void Clear() = 0;
1320
1321     virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; }
1322     virtual void EndDoc() { }
1323
1324     virtual void StartPage() { }
1325     virtual void EndPage() { }
1326
1327 #if WXWIN_COMPATIBILITY_2_6
1328     wxDEPRECATED( void BeginDrawing() );
1329     wxDEPRECATED( void EndDrawing() );
1330 #endif // WXWIN_COMPATIBILITY_2_6
1331
1332
1333     // set objects to use for drawing
1334     // ------------------------------
1335
1336     virtual void SetFont(const wxFont& font) = 0;
1337     virtual void SetPen(const wxPen& pen) = 0;
1338     virtual void SetBrush(const wxBrush& brush) = 0;
1339     virtual void SetBackground(const wxBrush& brush) = 0;
1340     virtual void SetBackgroundMode(int mode) = 0;
1341 #if wxUSE_PALETTE
1342     virtual void SetPalette(const wxPalette& palette) = 0;
1343 #endif // wxUSE_PALETTE
1344
1345     // clipping region
1346     // ---------------
1347
1348     void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
1349         { DoSetClippingRegion(x, y, width, height); }
1350     void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
1351         { DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
1352     void SetClippingRegion(const wxRect& rect)
1353         { DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); }
1354     void SetClippingRegion(const wxRegion& region)
1355         { DoSetClippingRegionAsRegion(region); }
1356
1357     virtual void DestroyClippingRegion() { ResetClipping(); }
1358
1359     void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
1360         { DoGetClippingBox(x, y, w, h); }
1361     void GetClippingBox(wxRect& rect) const
1362         {
1363           DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height);
1364         }
1365
1366     // text extent
1367     // -----------
1368
1369     virtual wxCoord GetCharHeight() const = 0;
1370     virtual wxCoord GetCharWidth() const = 0;
1371
1372     // only works for single line strings
1373     void GetTextExtent(const wxString& string,
1374                        wxCoord *x, wxCoord *y,
1375                        wxCoord *descent = NULL,
1376                        wxCoord *externalLeading = NULL,
1377                        const wxFont *theFont = NULL) const
1378         { DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
1379
1380     wxSize GetTextExtent(const wxString& string) const
1381     {
1382         wxCoord w, h;
1383         DoGetTextExtent(string, &w, &h);
1384         return wxSize(w, h);
1385     }
1386
1387     // works for single as well as multi-line strings
1388     virtual void GetMultiLineTextExtent(const wxString& string,
1389                                         wxCoord *width,
1390                                         wxCoord *height,
1391                                         wxCoord *heightLine = NULL,
1392                                         const wxFont *font = NULL) const;
1393
1394     wxSize GetMultiLineTextExtent(const wxString& string) const
1395     {
1396         wxCoord w, h;
1397         GetMultiLineTextExtent(string, &w, &h);
1398         return wxSize(w, h);
1399     }
1400
1401     // Measure cumulative width of text after each character
1402     bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
1403         { return DoGetPartialTextExtents(text, widths); }
1404
1405
1406     // size and resolution
1407     // -------------------
1408
1409     // in device units
1410     void GetSize(int *width, int *height) const
1411         { DoGetSize(width, height); }
1412     wxSize GetSize() const
1413     {
1414         int w, h;
1415         DoGetSize(&w, &h);
1416
1417         return wxSize(w, h);
1418     }
1419
1420     // in mm
1421     void GetSizeMM(int* width, int* height) const
1422         { DoGetSizeMM(width, height); }
1423     wxSize GetSizeMM() const
1424     {
1425         int w, h;
1426         DoGetSizeMM(&w, &h);
1427
1428         return wxSize(w, h);
1429     }
1430
1431     // query DC capabilities
1432     // ---------------------
1433
1434     virtual bool CanDrawBitmap() const = 0;
1435     virtual bool CanGetTextExtent() const = 0;
1436
1437     // colour depth
1438     virtual int GetDepth() const = 0;
1439
1440     // Resolution in Pixels per inch
1441     virtual wxSize GetPPI() const = 0;
1442
1443     virtual bool Ok() const { return IsOk(); }
1444     virtual bool IsOk() const { return m_ok; }
1445
1446     // accessors and setters
1447     // ---------------------
1448
1449     virtual int GetBackgroundMode() const { return m_backgroundMode; }
1450     virtual const wxBrush&  GetBackground() const { return m_backgroundBrush; }
1451     virtual const wxBrush&  GetBrush() const { return m_brush; }
1452     virtual const wxFont&   GetFont() const { return m_font; }
1453     virtual const wxPen&    GetPen() const { return m_pen; }
1454
1455     virtual const wxColour& GetTextForeground() const { return m_textForegroundColour; }
1456     virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; }
1457     virtual void SetTextForeground(const wxColour& colour)
1458         { m_textForegroundColour = colour; }
1459     virtual void SetTextBackground(const wxColour& colour)
1460         { m_textBackgroundColour = colour; }
1461
1462
1463     // coordinates conversions and transforms
1464     // --------------------------------------
1465
1466     virtual wxCoord DeviceToLogicalX(wxCoord x) const;
1467     virtual wxCoord DeviceToLogicalY(wxCoord y) const;
1468     virtual wxCoord DeviceToLogicalXRel(wxCoord x) const;
1469     virtual wxCoord DeviceToLogicalYRel(wxCoord y) const;
1470     virtual wxCoord LogicalToDeviceX(wxCoord x) const;
1471     virtual wxCoord LogicalToDeviceY(wxCoord y) const;
1472     virtual wxCoord LogicalToDeviceXRel(wxCoord x) const;
1473     virtual wxCoord LogicalToDeviceYRel(wxCoord y) const;
1474
1475     virtual void SetMapMode(int mode);
1476     virtual int GetMapMode() const { return m_mappingMode; }
1477
1478     virtual void SetUserScale(double x, double y);
1479     virtual void GetUserScale(double *x, double *y) const
1480     {
1481         if ( x ) *x = m_userScaleX;
1482         if ( y ) *y = m_userScaleY;
1483     }
1484
1485     virtual void SetLogicalScale(double x, double y);
1486     virtual void GetLogicalScale(double *x, double *y)
1487     {
1488         if ( x ) *x = m_logicalScaleX;
1489         if ( y ) *y = m_logicalScaleY;
1490     }
1491
1492     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
1493     void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
1494         { DoGetLogicalOrigin(x, y); }
1495     wxPoint GetLogicalOrigin() const
1496         { wxCoord x, y; DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
1497
1498     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
1499     void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
1500         { DoGetDeviceOrigin(x, y); }
1501     wxPoint GetDeviceOrigin() const
1502         { wxCoord x, y; DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
1503
1504     virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y );
1505
1506     virtual void ComputeScaleAndOrigin();
1507
1508     // this needs to overidden if the axis is inverted (such
1509     // as when using Postscript, where 0,0 is the lower left
1510     // corner, not the upper left).
1511     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
1512
1513     // logical functions
1514     // ---------------------------
1515
1516     virtual int GetLogicalFunction() const { return m_logicalFunction; }
1517     virtual void SetLogicalFunction(int function) = 0;
1518
1519     // bounding box
1520     // ------------
1521
1522     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
1523     {
1524       if ( m_isBBoxValid )
1525       {
1526          if ( x < m_minX ) m_minX = x;
1527          if ( y < m_minY ) m_minY = y;
1528          if ( x > m_maxX ) m_maxX = x;
1529          if ( y > m_maxY ) m_maxY = y;
1530       }
1531       else
1532       {
1533          m_isBBoxValid = true;
1534
1535          m_minX = x;
1536          m_minY = y;
1537          m_maxX = x;
1538          m_maxY = y;
1539       }
1540     }
1541
1542     void ResetBoundingBox()
1543     {
1544         m_isBBoxValid = false;
1545
1546         m_minX = m_maxX = m_minY = m_maxY = 0;
1547     }
1548
1549     // Get the final bounding box of the PostScript or Metafile picture.
1550     wxCoord MinX() const { return m_minX; }
1551     wxCoord MaxX() const { return m_maxX; }
1552     wxCoord MinY() const { return m_minY; }
1553     wxCoord MaxY() const { return m_maxY; }
1554
1555     // misc old functions
1556     // ------------------
1557
1558 #if WXWIN_COMPATIBILITY_2_8
1559     // for compatibility with the old code when wxCoord was long everywhere
1560     wxDEPRECATED( void GetTextExtent(const wxString& string,
1561                        long *x, long *y,
1562                        long *descent = NULL,
1563                        long *externalLeading = NULL,
1564                        const wxFont *theFont = NULL) const );
1565     wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const );
1566     wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const );
1567     wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const );
1568 #endif  // WXWIN_COMPATIBILITY_2_8
1569
1570     // RTL related functions
1571     // ---------------------
1572
1573     // get or change the layout direction (LTR or RTL) for this dc,
1574     // wxLayout_Default is returned if layout direction is not supported
1575     virtual wxLayoutDirection GetLayoutDirection() const
1576         { return wxLayout_Default; }
1577     virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir))
1578         { }
1579
1580 protected:
1581     // the pure virtual functions which should be implemented by wxDC
1582     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
1583                              int style = wxFLOOD_SURFACE) = 0;
1584
1585     virtual void DoGradientFillLinear(const wxRect& rect,
1586                                       const wxColour& initialColour,
1587                                       const wxColour& destColour,
1588                                       wxDirection nDirection = wxEAST);
1589
1590     virtual void DoGradientFillConcentric(const wxRect& rect,
1591                                         const wxColour& initialColour,
1592                                         const wxColour& destColour,
1593                                         const wxPoint& circleCenter);
1594
1595     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0;
1596
1597     virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0;
1598     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0;
1599
1600     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
1601                            wxCoord x2, wxCoord y2,
1602                            wxCoord xc, wxCoord yc) = 0;
1603     virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
1604                                  wxCoord width, wxCoord height);
1605     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
1606                                    double sa, double ea) = 0;
1607
1608     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0;
1609     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
1610                                         wxCoord width, wxCoord height,
1611                                         double radius) = 0;
1612     virtual void DoDrawEllipse(wxCoord x, wxCoord y,
1613                                wxCoord width, wxCoord height) = 0;
1614
1615     virtual void DoCrossHair(wxCoord x, wxCoord y) = 0;
1616
1617     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0;
1618     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
1619                               bool useMask = false) = 0;
1620
1621     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0;
1622     virtual void DoDrawRotatedText(const wxString& text,
1623                                    wxCoord x, wxCoord y, double angle) = 0;
1624
1625     virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
1626                         wxCoord width, wxCoord height,
1627                         wxDC *source,
1628                         wxCoord xsrc, wxCoord ysrc,
1629                         int rop = wxCOPY,
1630                         bool useMask = false,
1631                         wxCoord xsrcMask = wxDefaultCoord,
1632                         wxCoord ysrcMask = wxDefaultCoord) = 0;
1633
1634     virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
1635                                wxCoord dstWidth, wxCoord dstHeight,
1636                                wxDC *source,
1637                                wxCoord xsrc, wxCoord ysrc,
1638                                wxCoord srcWidth, wxCoord srcHeight,
1639                                int rop = wxCOPY,
1640                                bool useMask = false,
1641                                wxCoord xsrcMask = wxDefaultCoord,
1642                                wxCoord ysrcMask = wxDefaultCoord);
1643
1644     virtual wxBitmap DoGetAsBitmap(const wxRect *WXUNUSED(subrect)) const
1645         { return wxNullBitmap; }
1646
1647     virtual void DoGetSize(int *width, int *height) const = 0;
1648     virtual void DoGetSizeMM(int* width, int* height) const = 0;
1649
1650     virtual void DoDrawLines(int n, wxPoint points[],
1651                              wxCoord xoffset, wxCoord yoffset) = 0;
1652     virtual void DoDrawPolygon(int n, wxPoint points[],
1653                                wxCoord xoffset, wxCoord yoffset,
1654                                int fillStyle = wxODDEVEN_RULE) = 0;
1655     virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
1656                                wxCoord xoffset, wxCoord yoffset,
1657                                int fillStyle);
1658
1659     virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0;
1660     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
1661                                      wxCoord width, wxCoord height) = 0;
1662
1663     virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
1664                                   wxCoord *w, wxCoord *h) const
1665     {
1666         if ( x )
1667             *x = m_clipX1;
1668         if ( y )
1669             *y = m_clipY1;
1670         if ( w )
1671             *w = m_clipX2 - m_clipX1;
1672         if ( h )
1673             *h = m_clipY2 - m_clipY1;
1674     }
1675
1676     virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const
1677     {
1678         if ( x ) *x = m_logicalOriginX;
1679         if ( y ) *y = m_logicalOriginY;
1680     }
1681
1682     virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
1683     {
1684         if ( x ) *x = m_deviceOriginX;
1685         if ( y ) *y = m_deviceOriginY;
1686     }
1687
1688     virtual void DoGetTextExtent(const wxString& string,
1689                                  wxCoord *x, wxCoord *y,
1690                                  wxCoord *descent = NULL,
1691                                  wxCoord *externalLeading = NULL,
1692                                  const wxFont *theFont = NULL) const = 0;
1693
1694     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
1695
1696 #if wxUSE_SPLINES
1697     virtual void DoDrawSpline(wxList *points);
1698 #endif
1699
1700 protected:
1701     // unset clipping variables (after clipping region was destroyed)
1702     void ResetClipping()
1703     {
1704         m_clipping = false;
1705
1706         m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0;
1707     }
1708
1709     // flags
1710     bool m_colour:1;
1711     bool m_ok:1;
1712     bool m_clipping:1;
1713     bool m_isInteractive:1;
1714     bool m_isBBoxValid:1;
1715
1716     // coordinate system variables
1717
1718     // TODO short descriptions of what exactly they are would be nice...
1719
1720     wxCoord m_logicalOriginX, m_logicalOriginY;
1721     wxCoord m_deviceOriginX, m_deviceOriginY;           // Usually 0,0, can be change by user
1722
1723     wxCoord m_deviceLocalOriginX, m_deviceLocalOriginY; // non-zero if native top-left corner
1724                                                         // is not at 0,0. This was the case under
1725                                                         // Mac's GrafPorts (coordinate system
1726                                                         // used toplevel window's origin) and
1727                                                         // e.g. for Postscript, where the native
1728                                                         // origin in the bottom left corner.
1729     double m_logicalScaleX, m_logicalScaleY;
1730     double m_userScaleX, m_userScaleY;
1731     double m_scaleX, m_scaleY;  // calculated from logical scale and user scale
1732
1733     // Used by SetAxisOrientation() to invert the axes
1734     int m_signX, m_signY;
1735
1736     // what is a mm on a screen you don't know the size of?
1737     double       m_mm_to_pix_x,
1738                  m_mm_to_pix_y;
1739
1740     // bounding and clipping boxes
1741     wxCoord m_minX, m_minY, m_maxX, m_maxY;
1742     wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2;
1743
1744     int m_logicalFunction;
1745     int m_backgroundMode;
1746     int m_mappingMode;
1747
1748     // GDI objects
1749     wxPen             m_pen;
1750     wxBrush           m_brush;
1751     wxBrush           m_backgroundBrush;
1752     wxColour          m_textForegroundColour;
1753     wxColour          m_textBackgroundColour;
1754     wxFont            m_font;
1755
1756 #if wxUSE_PALETTE
1757     wxPalette         m_palette;
1758     bool              m_hasCustomPalette;
1759 #endif // wxUSE_PALETTE
1760
1761 private:
1762     DECLARE_NO_COPY_CLASS(wxDCBase)
1763     DECLARE_ABSTRACT_CLASS(wxDCBase)
1764 };
1765
1766 #endif // wxUSE_NEW_DC
1767
1768 // ----------------------------------------------------------------------------
1769 // now include the declaration of wxDC class
1770 // ----------------------------------------------------------------------------
1771
1772 #if defined(__WXPALMOS__)
1773     #include "wx/palmos/dc.h"
1774 #elif defined(__WXMSW__)
1775     #include "wx/msw/dc.h"
1776 #elif defined(__WXMOTIF__)
1777     #include "wx/motif/dc.h"
1778 #elif defined(__WXGTK20__)
1779     #include "wx/gtk/dc.h"
1780 #elif defined(__WXGTK__)
1781     #include "wx/gtk1/dc.h"
1782 #elif defined(__WXX11__)
1783     #include "wx/x11/dc.h"
1784 #elif defined(__WXMGL__)
1785     #include "wx/mgl/dc.h"
1786 #elif defined(__WXDFB__)
1787     #include "wx/dfb/dc.h"
1788 #elif defined(__WXMAC__)
1789     #include "wx/mac/dc.h"
1790 #elif defined(__WXCOCOA__)
1791     #include "wx/cocoa/dc.h"
1792 #elif defined(__WXPM__)
1793     #include "wx/os2/dc.h"
1794 #endif
1795
1796 #if wxUSE_GRAPHICS_CONTEXT
1797     #include "wx/dcgraph.h"
1798 #endif
1799
1800 // ----------------------------------------------------------------------------
1801 // helper class: you can use it to temporarily change the DC text colour and
1802 // restore it automatically when the object goes out of scope
1803 // ----------------------------------------------------------------------------
1804
1805 class WXDLLEXPORT wxDCTextColourChanger
1806 {
1807 public:
1808     wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { }
1809
1810     wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc)
1811     {
1812         Set(col);
1813     }
1814
1815     ~wxDCTextColourChanger()
1816     {
1817         if ( m_colFgOld.Ok() )
1818             m_dc.SetTextForeground(m_colFgOld);
1819     }
1820
1821     void Set(const wxColour& col)
1822     {
1823         if ( !m_colFgOld.Ok() )
1824             m_colFgOld = m_dc.GetTextForeground();
1825         m_dc.SetTextForeground(col);
1826     }
1827
1828 private:
1829     wxDC& m_dc;
1830
1831     wxColour m_colFgOld;
1832
1833     DECLARE_NO_COPY_CLASS(wxDCTextColourChanger)
1834 };
1835
1836 // ----------------------------------------------------------------------------
1837 // helper class: you can use it to temporarily change the DC pen and
1838 // restore it automatically when the object goes out of scope
1839 // ----------------------------------------------------------------------------
1840
1841 class WXDLLEXPORT wxDCPenChanger
1842 {
1843 public:
1844     wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen())
1845     {
1846         m_dc.SetPen(pen);
1847     }
1848
1849     ~wxDCPenChanger()
1850     {
1851         if ( m_penOld.Ok() )
1852             m_dc.SetPen(m_penOld);
1853     }
1854
1855 private:
1856     wxDC& m_dc;
1857
1858     wxPen m_penOld;
1859
1860     DECLARE_NO_COPY_CLASS(wxDCPenChanger)
1861 };
1862
1863 // ----------------------------------------------------------------------------
1864 // helper class: you can use it to temporarily change the DC brush and
1865 // restore it automatically when the object goes out of scope
1866 // ----------------------------------------------------------------------------
1867
1868 class WXDLLEXPORT wxDCBrushChanger
1869 {
1870 public:
1871     wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush())
1872     {
1873         m_dc.SetBrush(brush);
1874     }
1875
1876     ~wxDCBrushChanger()
1877     {
1878         if ( m_brushOld.Ok() )
1879             m_dc.SetBrush(m_brushOld);
1880     }
1881
1882 private:
1883     wxDC& m_dc;
1884
1885     wxBrush m_brushOld;
1886
1887     DECLARE_NO_COPY_CLASS(wxDCBrushChanger)
1888 };
1889
1890 // ----------------------------------------------------------------------------
1891 // another small helper class: sets the clipping region in its ctor and
1892 // destroys it in the dtor
1893 // ----------------------------------------------------------------------------
1894
1895 class WXDLLEXPORT wxDCClipper
1896 {
1897 public:
1898     wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc)
1899         { dc.SetClippingRegion(r); }
1900     wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc)
1901         { dc.SetClippingRegion(r.x, r.y, r.width, r.height); }
1902     wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc)
1903         { dc.SetClippingRegion(x, y, w, h); }
1904
1905     ~wxDCClipper() { m_dc.DestroyClippingRegion(); }
1906
1907 private:
1908     wxDC& m_dc;
1909
1910     DECLARE_NO_COPY_CLASS(wxDCClipper)
1911 };
1912
1913 #endif // _WX_DC_H_BASE_