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/region.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 //  Logical ops
  46 enum wxRasterOperationMode
  47 {
  48     wxCLEAR,       // 0
  49     wxXOR,         // src XOR dst
  50     wxINVERT,      // NOT dst
  51     wxOR_REVERSE,  // src OR (NOT dst)
  52     wxAND_REVERSE, // src AND (NOT dst)
  53     wxCOPY,        // src
  54     wxAND,         // src AND dst
  55     wxAND_INVERT,  // (NOT src) AND dst
  56     wxNO_OP,       // dst
  57     wxNOR,         // (NOT src) AND (NOT dst)
  58     wxEQUIV,       // (NOT src) XOR dst
  59     wxSRC_INVERT,  // (NOT src)
  60     wxOR_INVERT,   // (NOT src) OR dst
  61     wxNAND,        // (NOT src) OR (NOT dst)
  62     wxOR,          // src OR dst
  63     wxSET          // 1
  64 #if WXWIN_COMPATIBILITY_2_8
  65     ,wxROP_BLACK = wxCLEAR,
  66     wxBLIT_BLACKNESS = wxCLEAR,
  67     wxROP_XORPEN = wxXOR,
  68     wxBLIT_SRCINVERT = wxXOR,
  69     wxROP_NOT = wxINVERT,
  70     wxBLIT_DSTINVERT = wxINVERT,
  71     wxROP_MERGEPENNOT = wxOR_REVERSE,
  72     wxBLIT_00DD0228 = wxOR_REVERSE,
  73     wxROP_MASKPENNOT = wxAND_REVERSE,
  74     wxBLIT_SRCERASE = wxAND_REVERSE,
  75     wxROP_COPYPEN = wxCOPY,
  76     wxBLIT_SRCCOPY = wxCOPY,
  77     wxROP_MASKPEN = wxAND,
  78     wxBLIT_SRCAND = wxAND,
  79     wxROP_MASKNOTPEN = wxAND_INVERT,
  80     wxBLIT_00220326 = wxAND_INVERT,
  81     wxROP_NOP = wxNO_OP,
  82     wxBLIT_00AA0029 = wxNO_OP,
  83     wxROP_NOTMERGEPEN = wxNOR,
  84     wxBLIT_NOTSRCERASE = wxNOR,
  85     wxROP_NOTXORPEN = wxEQUIV,
  86     wxBLIT_00990066 = wxEQUIV,
  87     wxROP_NOTCOPYPEN = wxSRC_INVERT,
  88     wxBLIT_NOTSCRCOPY = wxSRC_INVERT,
  89     wxROP_MERGENOTPEN = wxOR_INVERT,
  90     wxBLIT_MERGEPAINT = wxOR_INVERT,
  91     wxROP_NOTMASKPEN = wxNAND,
  92     wxBLIT_007700E6 = wxNAND,
  93     wxROP_MERGEPEN = wxOR,
  94     wxBLIT_SRCPAINT = wxOR,
  95     wxROP_WHITE = wxSET,
  96     wxBLIT_WHITENESS = wxSET
  97 #endif //WXWIN_COMPATIBILITY_2_8
  98 };
  99
 100 //  Flood styles
 101 enum wxFloodFillStyle
 102 {
 103     wxFLOOD_SURFACE = 1,
 104     wxFLOOD_BORDER
 105 };
 106
 107 //  Mapping modes
 108 enum wxMappingMode
 109 {
 110     wxMM_TEXT = 1,
 111     wxMM_METRIC,
 112     wxMM_LOMETRIC,
 113     wxMM_TWIPS,
 114     wxMM_POINTS
 115 };
 116
 117 #if WXWIN_COMPATIBILITY_2_8
 118
 119 //-----------------------------------------------------------------------------
 120 // wxDrawObject helper class
 121 //-----------------------------------------------------------------------------
 122
 123 class WXDLLIMPEXP_CORE wxDrawObject
 124 {
 125 public:
 126     wxDEPRECATED_CONSTRUCTOR(wxDrawObject)()
 127         : m_isBBoxValid(false)
 128         , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
 129     { }
 130
 131     virtual ~wxDrawObject() { }
 132
 133     virtual void Draw(wxDC&) const { }
 134
 135     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
 136     {
 137       if ( m_isBBoxValid )
 138       {
 139          if ( x < m_minX ) m_minX = x;
 140          if ( y < m_minY ) m_minY = y;
 141          if ( x > m_maxX ) m_maxX = x;
 142          if ( y > m_maxY ) m_maxY = y;
 143       }
 144       else
 145       {
 146          m_isBBoxValid = true;
 147
 148          m_minX = x;
 149          m_minY = y;
 150          m_maxX = x;
 151          m_maxY = y;
 152       }
 153     }
 154
 155     void ResetBoundingBox()
 156     {
 157         m_isBBoxValid = false;
 158
 159         m_minX = m_maxX = m_minY = m_maxY = 0;
 160     }
 161
 162     // Get the final bounding box of the PostScript or Metafile picture.
 163
 164     wxCoord MinX() const { return m_minX; }
 165     wxCoord MaxX() const { return m_maxX; }
 166     wxCoord MinY() const { return m_minY; }
 167     wxCoord MaxY() const { return m_maxY; }
 168
 169     //to define the type of object for derived objects
 170     virtual int GetType()=0;
 171
 172 protected:
 173     //for boundingbox calculation
 174     bool m_isBBoxValid:1;
 175     //for boundingbox calculation
 176     wxCoord m_minX, m_minY, m_maxX, m_maxY;
 177 };
 178
 179 #endif // WXWIN_COMPATIBILITY_2_8
 180
 181
 182 //-----------------------------------------------------------------------------
 183 // wxDCFactory
 184 //-----------------------------------------------------------------------------
 185
 186 class WXDLLIMPEXP_FWD_CORE wxDCImpl;
 187
 188 class WXDLLIMPEXP_CORE wxDCFactory
 189 {
 190 public:
 191     wxDCFactory() {}
 192     virtual ~wxDCFactory() {}
 193
 194     virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window ) = 0;
 195     virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window ) = 0;
 196     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window ) = 0;
 197     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner ) = 0;
 198     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ) = 0;
 199     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ) = 0;
 200     virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner ) = 0;
 201 #if wxUSE_PRINTING_ARCHITECTURE
 202     virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data  ) = 0;
 203 #endif
 204
 205     static void Set(wxDCFactory *factory);
 206     static wxDCFactory *Get();
 207
 208 private:
 209     static wxDCFactory *m_factory;
 210 };
 211
 212 //-----------------------------------------------------------------------------
 213 // wxNativeDCFactory
 214 //-----------------------------------------------------------------------------
 215
 216 class WXDLLIMPEXP_CORE wxNativeDCFactory: public wxDCFactory
 217 {
 218 public:
 219     wxNativeDCFactory() {}
 220
 221     virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window );
 222     virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window );
 223     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window );
 224     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner );
 225     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap );
 226     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc );
 227     virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner );
 228 #if wxUSE_PRINTING_ARCHITECTURE
 229     virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data  );
 230 #endif
 231 };
 232
 233 //-----------------------------------------------------------------------------
 234 // wxDCImpl
 235 //-----------------------------------------------------------------------------
 236
 237 class WXDLLIMPEXP_CORE wxDCImpl: public wxObject
 238 {
 239 public:
 240     wxDCImpl( wxDC *owner );
 241     virtual ~wxDCImpl();
 242
 243     wxDC *GetOwner() const { return m_owner; }
 244
 245     wxWindow* GetWindow() const { return m_window; }
 246
 247     virtual bool IsOk() const { return m_ok; }
 248
 249     // query capabilities
 250
 251     virtual bool CanDrawBitmap() const = 0;
 252     virtual bool CanGetTextExtent() const = 0;
 253
 254     // get Cairo context
 255     virtual void* GetCairoContext() const
 256     {
 257         return NULL;
 258     }
 259
 260     // query dimension, colour deps, resolution
 261
 262     virtual void DoGetSize(int *width, int *height) const = 0;
 263     void GetSize(int *width, int *height) const
 264     {
 265         DoGetSize(width, height);
 266         return ;
 267     }
 268
 269     wxSize GetSize() const
 270     {
 271         int w, h;
 272         DoGetSize(&w, &h);
 273         return wxSize(w, h);
 274     }
 275
 276     virtual void DoGetSizeMM(int* width, int* height) const = 0;
 277
 278     virtual int GetDepth() const = 0;
 279     virtual wxSize GetPPI() const = 0;
 280
 281     // Right-To-Left (RTL) modes
 282
 283     virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) { }
 284     virtual wxLayoutDirection GetLayoutDirection() const  { return wxLayout_Default; }
 285
 286     // page and document
 287
 288     virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; }
 289     virtual void EndDoc() { }
 290
 291     virtual void StartPage() { }
 292     virtual void EndPage() { }
 293
 294     // flushing the content of this dc immediately eg onto screen
 295     virtual void Flush() { }
 296
 297     // bounding box
 298
 299     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
 300     {
 301       if ( m_isBBoxValid )
 302       {
 303          if ( x < m_minX ) m_minX = x;
 304          if ( y < m_minY ) m_minY = y;
 305          if ( x > m_maxX ) m_maxX = x;
 306          if ( y > m_maxY ) m_maxY = y;
 307       }
 308       else
 309       {
 310          m_isBBoxValid = true;
 311
 312          m_minX = x;
 313          m_minY = y;
 314          m_maxX = x;
 315          m_maxY = y;
 316       }
 317     }
 318     void ResetBoundingBox()
 319     {
 320         m_isBBoxValid = false;
 321
 322         m_minX = m_maxX = m_minY = m_maxY = 0;
 323     }
 324
 325     wxCoord MinX() const { return m_minX; }
 326     wxCoord MaxX() const { return m_maxX; }
 327     wxCoord MinY() const { return m_minY; }
 328     wxCoord MaxY() const { return m_maxY; }
 329
 330     // setters and getters
 331
 332     virtual void SetFont(const wxFont& font) = 0;
 333     virtual const wxFont& GetFont() const { return m_font; }
 334
 335     virtual void SetPen(const wxPen& pen) = 0;
 336     virtual const wxPen& GetPen() const { return m_pen; }
 337
 338     virtual void SetBrush(const wxBrush& brush) = 0;
 339     virtual const wxBrush& GetBrush() const { return m_brush; }
 340
 341     virtual void SetBackground(const wxBrush& brush) = 0;
 342     virtual const wxBrush& GetBackground() const { return m_backgroundBrush; }
 343
 344     virtual void SetBackgroundMode(int mode) = 0;
 345     virtual int GetBackgroundMode() const { return m_backgroundMode; }
 346
 347     virtual void SetTextForeground(const wxColour& colour)
 348         { m_textForegroundColour = colour; }
 349     virtual const wxColour& GetTextForeground() const
 350         { return m_textForegroundColour; }
 351
 352     virtual void SetTextBackground(const wxColour& colour)
 353         { m_textBackgroundColour = colour; }
 354     virtual const wxColour& GetTextBackground() const
 355         { return m_textBackgroundColour; }
 356
 357 #if wxUSE_PALETTE
 358     virtual void SetPalette(const wxPalette& palette) = 0;
 359 #endif // wxUSE_PALETTE
 360
 361     // inherit the DC attributes (font and colours) from the given window
 362     //
 363     // this is called automatically when a window, client or paint DC is
 364     // created
 365     virtual void InheritAttributes(wxWindow *win);
 366
 367
 368     // logical functions
 369
 370     virtual void SetLogicalFunction(wxRasterOperationMode function) = 0;
 371     virtual wxRasterOperationMode GetLogicalFunction() const
 372                                       { return m_logicalFunction; }
 373
 374     // text measurement
 375
 376     virtual wxCoord GetCharHeight() const = 0;
 377     virtual wxCoord GetCharWidth() const = 0;
 378     virtual void DoGetTextExtent(const wxString& string,
 379                                  wxCoord *x, wxCoord *y,
 380                                  wxCoord *descent = NULL,
 381                                  wxCoord *externalLeading = NULL,
 382                                  const wxFont *theFont = NULL) const = 0;
 383     virtual void GetMultiLineTextExtent(const wxString& string,
 384                                         wxCoord *width,
 385                                         wxCoord *height,
 386                                         wxCoord *heightLine = NULL,
 387                                         const wxFont *font = NULL) const;
 388     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 389
 390     // clearing
 391
 392     virtual void Clear() = 0;
 393
 394     // clipping
 395
 396     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 397                                      wxCoord width, wxCoord height) = 0;
 398
 399     // NB: this function works with device coordinates, not the logical ones!
 400     virtual void DoSetDeviceClippingRegion(const wxRegion& region) = 0;
 401
 402     virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
 403                                   wxCoord *w, wxCoord *h) const
 404     {
 405         if ( x )
 406             *x = m_clipX1;
 407         if ( y )
 408             *y = m_clipY1;
 409         if ( w )
 410             *w = m_clipX2 - m_clipX1;
 411         if ( h )
 412             *h = m_clipY2 - m_clipY1;
 413     }
 414
 415     virtual void DestroyClippingRegion() { ResetClipping(); }
 416
 417
 418     // coordinates conversions and transforms
 419
 420     virtual wxCoord DeviceToLogicalX(wxCoord x) const;
 421     virtual wxCoord DeviceToLogicalY(wxCoord y) const;
 422     virtual wxCoord DeviceToLogicalXRel(wxCoord x) const;
 423     virtual wxCoord DeviceToLogicalYRel(wxCoord y) const;
 424     virtual wxCoord LogicalToDeviceX(wxCoord x) const;
 425     virtual wxCoord LogicalToDeviceY(wxCoord y) const;
 426     virtual wxCoord LogicalToDeviceXRel(wxCoord x) const;
 427     virtual wxCoord LogicalToDeviceYRel(wxCoord y) const;
 428
 429     virtual void SetMapMode(wxMappingMode mode);
 430     virtual wxMappingMode GetMapMode() const { return m_mappingMode; }
 431
 432     virtual void SetUserScale(double x, double y);
 433     virtual void GetUserScale(double *x, double *y) const
 434     {
 435         if ( x ) *x = m_userScaleX;
 436         if ( y ) *y = m_userScaleY;
 437     }
 438
 439     virtual void SetLogicalScale(double x, double y);
 440     virtual void GetLogicalScale(double *x, double *y)
 441     {
 442         if ( x ) *x = m_logicalScaleX;
 443         if ( y ) *y = m_logicalScaleY;
 444     }
 445
 446     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 447     virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const
 448     {
 449         if ( x ) *x = m_logicalOriginX;
 450         if ( y ) *y = m_logicalOriginY;
 451     }
 452
 453     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 454     virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
 455     {
 456         if ( x ) *x = m_deviceOriginX;
 457         if ( y ) *y = m_deviceOriginY;
 458     }
 459
 460     virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y );
 461
 462     virtual void ComputeScaleAndOrigin();
 463
 464     // this needs to overidden if the axis is inverted
 465     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 466
 467     // ---------------------------------------------------------
 468     // the actual drawing API
 469
 470     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 471                              wxFloodFillStyle style = wxFLOOD_SURFACE) = 0;
 472
 473     virtual void DoGradientFillLinear(const wxRect& rect,
 474                                       const wxColour& initialColour,
 475                                       const wxColour& destColour,
 476                                       wxDirection nDirection = wxEAST);
 477
 478     virtual void DoGradientFillConcentric(const wxRect& rect,
 479                                         const wxColour& initialColour,
 480                                         const wxColour& destColour,
 481                                         const wxPoint& circleCenter);
 482
 483     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0;
 484
 485     virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0;
 486     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0;
 487
 488     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 489                            wxCoord x2, wxCoord y2,
 490                            wxCoord xc, wxCoord yc) = 0;
 491     virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
 492                                  wxCoord width, wxCoord height);
 493     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 494                                    double sa, double ea) = 0;
 495
 496     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0;
 497     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 498                                         wxCoord width, wxCoord height,
 499                                         double radius) = 0;
 500     virtual void DoDrawEllipse(wxCoord x, wxCoord y,
 501                                wxCoord width, wxCoord height) = 0;
 502
 503     virtual void DoCrossHair(wxCoord x, wxCoord y) = 0;
 504
 505     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0;
 506     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 507                               bool useMask = false) = 0;
 508
 509     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0;
 510     virtual void DoDrawRotatedText(const wxString& text,
 511                                    wxCoord x, wxCoord y, double angle) = 0;
 512
 513     virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
 514                         wxCoord width, wxCoord height,
 515                         wxDC *source,
 516                         wxCoord xsrc, wxCoord ysrc,
 517                         wxRasterOperationMode rop = wxCOPY,
 518                         bool useMask = false,
 519                         wxCoord xsrcMask = wxDefaultCoord,
 520                         wxCoord ysrcMask = wxDefaultCoord) = 0;
 521
 522     virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
 523                                wxCoord dstWidth, wxCoord dstHeight,
 524                                wxDC *source,
 525                                wxCoord xsrc, wxCoord ysrc,
 526                                wxCoord srcWidth, wxCoord srcHeight,
 527                                wxRasterOperationMode rop = wxCOPY,
 528                                bool useMask = false,
 529                                wxCoord xsrcMask = wxDefaultCoord,
 530                                wxCoord ysrcMask = wxDefaultCoord);
 531
 532     virtual wxBitmap DoGetAsBitmap(const wxRect *WXUNUSED(subrect)) const
 533         { return wxNullBitmap; }
 534
 535
 536     virtual void DoDrawLines(int n, wxPoint points[],
 537                              wxCoord xoffset, wxCoord yoffset ) = 0;
 538     virtual void DrawLines(const wxPointList *list,
 539                            wxCoord xoffset, wxCoord yoffset );
 540
 541     virtual void DoDrawPolygon(int n, wxPoint points[],
 542                            wxCoord xoffset, wxCoord yoffset,
 543                            wxPolygonFillMode fillStyle = wxODDEVEN_RULE) = 0;
 544     virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
 545                                wxCoord xoffset, wxCoord yoffset,
 546                                wxPolygonFillMode fillStyle);
 547     void DrawPolygon(const wxPointList *list,
 548                      wxCoord xoffset, wxCoord yoffset,
 549                      wxPolygonFillMode fillStyle );
 550
 551
 552 #if wxUSE_SPLINES
 553     void DrawSpline(wxCoord x1, wxCoord y1,
 554                             wxCoord x2, wxCoord y2,
 555                             wxCoord x3, wxCoord y3);
 556     void DrawSpline(int n, wxPoint points[]);
 557     void DrawSpline(const wxPointList *points) { DoDrawSpline(points); }
 558
 559     virtual void DoDrawSpline(const wxPointList *points);
 560 #endif
 561
 562     // ---------------------------------------------------------
 563     // wxMemoryDC Impl API
 564
 565     virtual void DoSelect(const wxBitmap& WXUNUSED(bmp))
 566        { }
 567
 568     virtual const wxBitmap& GetSelectedBitmap() const
 569         { return wxNullBitmap; }
 570     virtual wxBitmap& GetSelectedBitmap()
 571         { return wxNullBitmap; }
 572
 573     // ---------------------------------------------------------
 574     // wxPrinterDC Impl API
 575
 576     virtual wxRect GetPaperRect() const
 577         { int w = 0; int h = 0; DoGetSize( &w, &h ); return wxRect(0,0,w,h); }
 578
 579     virtual int GetResolution() const
 580         { return -1; }
 581
 582 private:
 583     wxDC       *m_owner;
 584
 585 protected:
 586     // unset clipping variables (after clipping region was destroyed)
 587     void ResetClipping()
 588     {
 589         m_clipping = false;
 590
 591         m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0;
 592     }
 593
 594 #ifdef __WXWINCE__
 595     //! Generic method to draw ellipses, circles and arcs with current pen and brush.
 596     /*! \param x Upper left corner of bounding box.
 597      *  \param y Upper left corner of bounding box.
 598      *  \param w Width of bounding box.
 599      *  \param h Height of bounding box.
 600      *  \param sa Starting angle of arc
 601      *            (counterclockwise, start at 3 o'clock, 360 is full circle).
 602      *  \param ea Ending angle of arc.
 603      *  \param angle Rotation angle, the Arc will be rotated after
 604      *               calculating begin and end.
 605      */
 606     void DrawEllipticArcRot( wxCoord x, wxCoord y,
 607                              wxCoord width, wxCoord height,
 608                              double sa = 0, double ea = 0, double angle = 0 )
 609     { DoDrawEllipticArcRot( x, y, width, height, sa, ea, angle ); }
 610
 611     void DrawEllipticArcRot( const wxPoint& pt,
 612                              const wxSize& sz,
 613                              double sa = 0, double ea = 0, double angle = 0 )
 614     { DoDrawEllipticArcRot( pt.x, pt.y, sz.x, sz.y, sa, ea, angle ); }
 615
 616     void DrawEllipticArcRot( const wxRect& rect,
 617                              double sa = 0, double ea = 0, double angle = 0 )
 618     { DoDrawEllipticArcRot( rect.x, rect.y, rect.width, rect.height, sa, ea, angle ); }
 619
 620     virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y,
 621                                        wxCoord w, wxCoord h,
 622                                        double sa = 0, double ea = 0, double angle = 0 );
 623
 624     //! Rotates points around center.
 625     /*! This is a quite straight method, it calculates in pixels
 626      *  and so it produces rounding errors.
 627      *  \param points The points inside will be rotated.
 628      *  \param angle Rotating angle (counterclockwise, start at 3 o'clock, 360 is full circle).
 629      *  \param center Center of rotation.
 630      */
 631     void Rotate( wxPointList* points, double angle, wxPoint center = wxPoint(0,0) );
 632
 633     // used by DrawEllipticArcRot
 634     // Careful: wxList gets filled with points you have to delete later.
 635     void CalculateEllipticPoints( wxPointList* points,
 636                                   wxCoord xStart, wxCoord yStart,
 637                                   wxCoord w, wxCoord h,
 638                                   double sa, double ea );
 639 #endif // __WXWINCE__
 640
 641     // returns adjustment factor for converting wxFont "point size"; in wx
 642     // it is point size on screen and needs to be multiplied by this value
 643     // for rendering on higher-resolution DCs such as printer ones
 644     static float GetFontPointSizeAdjustment(float dpi);
 645
 646     // window on which the DC draws or NULL
 647     wxWindow   *m_window;
 648
 649     // flags
 650     bool m_colour:1;
 651     bool m_ok:1;
 652     bool m_clipping:1;
 653     bool m_isInteractive:1;
 654     bool m_isBBoxValid:1;
 655
 656     // coordinate system variables
 657
 658     wxCoord m_logicalOriginX, m_logicalOriginY;
 659     wxCoord m_deviceOriginX, m_deviceOriginY;           // Usually 0,0, can be change by user
 660
 661     wxCoord m_deviceLocalOriginX, m_deviceLocalOriginY; // non-zero if native top-left corner
 662                                                         // is not at 0,0. This was the case under
 663                                                         // Mac's GrafPorts (coordinate system
 664                                                         // used toplevel window's origin) and
 665                                                         // e.g. for Postscript, where the native
 666                                                         // origin in the bottom left corner.
 667     double m_logicalScaleX, m_logicalScaleY;
 668     double m_userScaleX, m_userScaleY;
 669     double m_scaleX, m_scaleY;  // calculated from logical scale and user scale
 670
 671     int m_signX, m_signY;  // Used by SetAxisOrientation() to invert the axes
 672
 673     // what is a mm on a screen you don't know the size of?
 674     double       m_mm_to_pix_x,
 675                  m_mm_to_pix_y;
 676
 677     // bounding and clipping boxes
 678     wxCoord m_minX, m_minY, m_maxX, m_maxY;
 679     wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2;
 680
 681     wxRasterOperationMode m_logicalFunction;
 682     int m_backgroundMode;
 683     wxMappingMode m_mappingMode;
 684
 685     wxPen             m_pen;
 686     wxBrush           m_brush;
 687     wxBrush           m_backgroundBrush;
 688     wxColour          m_textForegroundColour;
 689     wxColour          m_textBackgroundColour;
 690     wxFont            m_font;
 691
 692 #if wxUSE_PALETTE
 693     wxPalette         m_palette;
 694     bool              m_hasCustomPalette;
 695 #endif // wxUSE_PALETTE
 696
 697 private:
 698     DECLARE_ABSTRACT_CLASS(wxDCImpl)
 699 };
 700
 701
 702 class WXDLLIMPEXP_CORE wxDC : public wxObject
 703 {
 704 public:
 705     // copy attributes (font, colours and writing direction) from another DC
 706     void CopyAttributes(const wxDC& dc);
 707
 708     virtual ~wxDC() { delete m_pimpl; }
 709
 710     wxDCImpl *GetImpl()
 711         { return m_pimpl; }
 712     const wxDCImpl *GetImpl() const
 713         { return m_pimpl; }
 714
 715     wxWindow *GetWindow() const
 716         { return m_pimpl->GetWindow(); }
 717
 718     bool IsOk() const
 719         { return m_pimpl && m_pimpl->IsOk(); }
 720
 721     // query capabilities
 722
 723     bool CanDrawBitmap() const
 724         { return m_pimpl->CanDrawBitmap(); }
 725     bool CanGetTextExtent() const
 726         { return m_pimpl->CanGetTextExtent(); }
 727
 728     // query dimension, colour deps, resolution
 729
 730     void GetSize(int *width, int *height) const
 731         { m_pimpl->DoGetSize(width, height); }
 732     wxSize GetSize() const
 733         { return m_pimpl->GetSize(); }
 734
 735     void GetSizeMM(int* width, int* height) const
 736         { m_pimpl->DoGetSizeMM(width, height); }
 737     wxSize GetSizeMM() const
 738     {
 739         int w, h;
 740         m_pimpl->DoGetSizeMM(&w, &h);
 741         return wxSize(w, h);
 742     }
 743
 744     int GetDepth() const
 745         { return m_pimpl->GetDepth(); }
 746     wxSize GetPPI() const
 747         { return m_pimpl->GetPPI(); }
 748
 749     virtual int GetResolution() const
 750         { return m_pimpl->GetResolution(); }
 751
 752     // Right-To-Left (RTL) modes
 753
 754     void SetLayoutDirection(wxLayoutDirection dir)
 755         { m_pimpl->SetLayoutDirection( dir ); }
 756     wxLayoutDirection GetLayoutDirection() const
 757         { return m_pimpl->GetLayoutDirection(); }
 758
 759     // page and document
 760
 761     bool StartDoc(const wxString& message)
 762         { return m_pimpl->StartDoc(message); }
 763     void EndDoc()
 764         { m_pimpl->EndDoc(); }
 765
 766     void StartPage()
 767         { m_pimpl->StartPage(); }
 768     void EndPage()
 769         { m_pimpl->EndPage(); }
 770
 771     // bounding box
 772
 773     void CalcBoundingBox(wxCoord x, wxCoord y)
 774         { m_pimpl->CalcBoundingBox(x,y); }
 775     void ResetBoundingBox()
 776         { m_pimpl->ResetBoundingBox(); }
 777
 778     wxCoord MinX() const
 779         { return m_pimpl->MinX(); }
 780     wxCoord MaxX() const
 781         { return m_pimpl->MaxX(); }
 782     wxCoord MinY() const
 783         { return m_pimpl->MinY(); }
 784     wxCoord MaxY() const
 785         { return m_pimpl->MaxY(); }
 786
 787     // setters and getters
 788
 789     void SetFont(const wxFont& font)
 790         { m_pimpl->SetFont( font ); }
 791     const wxFont&   GetFont() const
 792         { return m_pimpl->GetFont(); }
 793
 794     void SetPen(const wxPen& pen)
 795         { m_pimpl->SetPen( pen ); }
 796     const wxPen&    GetPen() const
 797         { return m_pimpl->GetPen(); }
 798
 799     void SetBrush(const wxBrush& brush)
 800         { m_pimpl->SetBrush( brush ); }
 801     const wxBrush&  GetBrush() const
 802         { return m_pimpl->GetBrush(); }
 803
 804     void SetBackground(const wxBrush& brush)
 805         { m_pimpl->SetBackground( brush ); }
 806     const wxBrush&  GetBackground() const
 807         { return m_pimpl->GetBackground(); }
 808
 809     void SetBackgroundMode(int mode)
 810         { m_pimpl->SetBackgroundMode( mode ); }
 811     int GetBackgroundMode() const
 812         { return m_pimpl->GetBackgroundMode(); }
 813
 814     void SetTextForeground(const wxColour& colour)
 815         { m_pimpl->SetTextForeground(colour); }
 816     const wxColour& GetTextForeground() const
 817         { return m_pimpl->GetTextForeground(); }
 818
 819     void SetTextBackground(const wxColour& colour)
 820         { m_pimpl->SetTextBackground(colour); }
 821     const wxColour& GetTextBackground() const
 822         { return m_pimpl->GetTextBackground(); }
 823
 824 #if wxUSE_PALETTE
 825     void SetPalette(const wxPalette& palette)
 826         { m_pimpl->SetPalette(palette); }
 827 #endif // wxUSE_PALETTE
 828
 829     // logical functions
 830
 831     void SetLogicalFunction(wxRasterOperationMode function)
 832         { m_pimpl->SetLogicalFunction(function); }
 833     wxRasterOperationMode GetLogicalFunction() const
 834         { return m_pimpl->GetLogicalFunction(); }
 835
 836     // text measurement
 837
 838     wxCoord GetCharHeight() const
 839         { return m_pimpl->GetCharHeight(); }
 840     wxCoord GetCharWidth() const
 841         { return m_pimpl->GetCharWidth(); }
 842
 843     void GetTextExtent(const wxString& string,
 844                        wxCoord *x, wxCoord *y,
 845                        wxCoord *descent = NULL,
 846                        wxCoord *externalLeading = NULL,
 847                        const wxFont *theFont = NULL) const
 848         { m_pimpl->DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
 849
 850     wxSize GetTextExtent(const wxString& string) const
 851     {
 852         wxCoord w, h;
 853         m_pimpl->DoGetTextExtent(string, &w, &h);
 854         return wxSize(w, h);
 855     }
 856
 857     void GetMultiLineTextExtent(const wxString& string,
 858                                         wxCoord *width,
 859                                         wxCoord *height,
 860                                         wxCoord *heightLine = NULL,
 861                                         const wxFont *font = NULL) const
 862         { m_pimpl->GetMultiLineTextExtent( string, width, height, heightLine, font ); }
 863
 864     wxSize GetMultiLineTextExtent(const wxString& string) const
 865     {
 866         wxCoord w, h;
 867         m_pimpl->GetMultiLineTextExtent(string, &w, &h);
 868         return wxSize(w, h);
 869     }
 870
 871     bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
 872         { return m_pimpl->DoGetPartialTextExtents(text, widths); }
 873
 874     // clearing
 875
 876     void Clear()
 877         { m_pimpl->Clear(); }
 878
 879     // clipping
 880
 881     void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 882         { m_pimpl->DoSetClippingRegion(x, y, width, height); }
 883     void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
 884         { m_pimpl->DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
 885     void SetClippingRegion(const wxRect& rect)
 886         { m_pimpl->DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); }
 887
 888     // unlike the functions above, the coordinates of the region used in this
 889     // one are in device coordinates, not the logical ones
 890     void SetDeviceClippingRegion(const wxRegion& region)
 891         { m_pimpl->DoSetDeviceClippingRegion(region); }
 892
 893     // this function is deprecated because its name is confusing: you may
 894     // expect it to work with logical coordinates but, in fact, it does exactly
 895     // the same thing as SetDeviceClippingRegion()
 896     //
 897     // please review the code using it and either replace it with calls to
 898     // SetDeviceClippingRegion() or correct it if it was [wrongly] passing
 899     // logical coordinates to this function
 900     wxDEPRECATED_INLINE(void SetClippingRegion(const wxRegion& region),
 901                         SetDeviceClippingRegion(region); )
 902
 903     void DestroyClippingRegion()
 904         { m_pimpl->DestroyClippingRegion(); }
 905
 906     void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
 907         { m_pimpl->DoGetClippingBox(x, y, w, h); }
 908     void GetClippingBox(wxRect& rect) const
 909         { m_pimpl->DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); }
 910
 911     // coordinates conversions and transforms
 912
 913     wxCoord DeviceToLogicalX(wxCoord x) const
 914         { return m_pimpl->DeviceToLogicalX(x); }
 915     wxCoord DeviceToLogicalY(wxCoord y) const
 916         { return m_pimpl->DeviceToLogicalY(y); }
 917     wxCoord DeviceToLogicalXRel(wxCoord x) const
 918         { return m_pimpl->DeviceToLogicalXRel(x); }
 919     wxCoord DeviceToLogicalYRel(wxCoord y) const
 920         { return m_pimpl->DeviceToLogicalYRel(y); }
 921     wxCoord LogicalToDeviceX(wxCoord x) const
 922         { return m_pimpl->LogicalToDeviceX(x); }
 923     wxCoord LogicalToDeviceY(wxCoord y) const
 924         { return m_pimpl->LogicalToDeviceY(y); }
 925     wxCoord LogicalToDeviceXRel(wxCoord x) const
 926         { return m_pimpl->LogicalToDeviceXRel(x); }
 927     wxCoord LogicalToDeviceYRel(wxCoord y) const
 928         { return m_pimpl->LogicalToDeviceYRel(y); }
 929
 930     void SetMapMode(wxMappingMode mode)
 931         { m_pimpl->SetMapMode(mode); }
 932     wxMappingMode GetMapMode() const
 933         { return m_pimpl->GetMapMode(); }
 934
 935     void SetUserScale(double x, double y)
 936         { m_pimpl->SetUserScale(x,y); }
 937     void GetUserScale(double *x, double *y) const
 938         { m_pimpl->GetUserScale( x, y ); }
 939
 940     void SetLogicalScale(double x, double y)
 941         { m_pimpl->SetLogicalScale( x, y ); }
 942     void GetLogicalScale(double *x, double *y)
 943         { m_pimpl->GetLogicalScale( x, y ); }
 944
 945     void SetLogicalOrigin(wxCoord x, wxCoord y)
 946         { m_pimpl->SetLogicalOrigin(x,y); }
 947     void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
 948         { m_pimpl->DoGetLogicalOrigin(x, y); }
 949     wxPoint GetLogicalOrigin() const
 950         { wxCoord x, y; m_pimpl->DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
 951
 952     void SetDeviceOrigin(wxCoord x, wxCoord y)
 953         { m_pimpl->SetDeviceOrigin( x, y); }
 954     void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
 955         { m_pimpl->DoGetDeviceOrigin(x, y); }
 956     wxPoint GetDeviceOrigin() const
 957         { wxCoord x, y; m_pimpl->DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
 958
 959     void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
 960         { m_pimpl->SetAxisOrientation(xLeftRight, yBottomUp); }
 961
 962     // mostly internal
 963     void SetDeviceLocalOrigin( wxCoord x, wxCoord y )
 964         { m_pimpl->SetDeviceLocalOrigin( x, y ); }
 965
 966
 967     // -----------------------------------------------
 968     // the actual drawing API
 969
 970     bool FloodFill(wxCoord x, wxCoord y, const wxColour& col,
 971                    wxFloodFillStyle style = wxFLOOD_SURFACE)
 972         { return m_pimpl->DoFloodFill(x, y, col, style); }
 973     bool FloodFill(const wxPoint& pt, const wxColour& col,
 974                    wxFloodFillStyle style = wxFLOOD_SURFACE)
 975         { return m_pimpl->DoFloodFill(pt.x, pt.y, col, style); }
 976
 977     // fill the area specified by rect with a radial gradient, starting from
 978     // initialColour in the centre of the cercle and fading to destColour.
 979     void GradientFillConcentric(const wxRect& rect,
 980                                 const wxColour& initialColour,
 981                                 const wxColour& destColour)
 982         { m_pimpl->DoGradientFillConcentric( rect, initialColour, destColour,
 983                                              wxPoint(rect.GetWidth() / 2,
 984                                                      rect.GetHeight() / 2)); }
 985
 986     void GradientFillConcentric(const wxRect& rect,
 987                                 const wxColour& initialColour,
 988                                 const wxColour& destColour,
 989                                 const wxPoint& circleCenter)
 990         { m_pimpl->DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); }
 991
 992     // fill the area specified by rect with a linear gradient
 993     void GradientFillLinear(const wxRect& rect,
 994                             const wxColour& initialColour,
 995                             const wxColour& destColour,
 996                             wxDirection nDirection = wxEAST)
 997         { m_pimpl->DoGradientFillLinear(rect, initialColour, destColour, nDirection); }
 998
 999     bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
1000         { return m_pimpl->DoGetPixel(x, y, col); }
1001     bool GetPixel(const wxPoint& pt, wxColour *col) const
1002         { return m_pimpl->DoGetPixel(pt.x, pt.y, col); }
1003
1004     void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
1005         { m_pimpl->DoDrawLine(x1, y1, x2, y2); }
1006     void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
1007         { m_pimpl->DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
1008
1009     void CrossHair(wxCoord x, wxCoord y)
1010         { m_pimpl->DoCrossHair(x, y); }
1011     void CrossHair(const wxPoint& pt)
1012         { m_pimpl->DoCrossHair(pt.x, pt.y); }
1013
1014     void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
1015                  wxCoord xc, wxCoord yc)
1016         { m_pimpl->DoDrawArc(x1, y1, x2, y2, xc, yc); }
1017     void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
1018         { m_pimpl->DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
1019
1020     void DrawCheckMark(wxCoord x, wxCoord y,
1021                        wxCoord width, wxCoord height)
1022         { m_pimpl->DoDrawCheckMark(x, y, width, height); }
1023     void DrawCheckMark(const wxRect& rect)
1024         { m_pimpl->DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
1025
1026     void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
1027                          double sa, double ea)
1028         { m_pimpl->DoDrawEllipticArc(x, y, w, h, sa, ea); }
1029     void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
1030                          double sa, double ea)
1031         { m_pimpl->DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
1032
1033     void DrawPoint(wxCoord x, wxCoord y)
1034         { m_pimpl->DoDrawPoint(x, y); }
1035     void DrawPoint(const wxPoint& pt)
1036         { m_pimpl->DoDrawPoint(pt.x, pt.y); }
1037
1038     void DrawLines(int n, wxPoint points[],
1039                    wxCoord xoffset = 0, wxCoord yoffset = 0)
1040         { m_pimpl->DoDrawLines(n, points, xoffset, yoffset); }
1041     void DrawLines(const wxPointList *list,
1042                    wxCoord xoffset = 0, wxCoord yoffset = 0)
1043         { m_pimpl->DrawLines( list, xoffset, yoffset ); }
1044 #if WXWIN_COMPATIBILITY_2_8
1045     wxDEPRECATED( void DrawLines(const wxList *list,
1046                                  wxCoord xoffset = 0, wxCoord yoffset = 0) );
1047 #endif  // WXWIN_COMPATIBILITY_2_8
1048
1049     void DrawPolygon(int n, wxPoint points[],
1050                      wxCoord xoffset = 0, wxCoord yoffset = 0,
1051                      wxPolygonFillMode fillStyle = wxODDEVEN_RULE)
1052         { m_pimpl->DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
1053     void DrawPolygon(const wxPointList *list,
1054                      wxCoord xoffset = 0, wxCoord yoffset = 0,
1055                      wxPolygonFillMode fillStyle = wxODDEVEN_RULE)
1056         { m_pimpl->DrawPolygon( list, xoffset, yoffset, fillStyle ); }
1057     void DrawPolyPolygon(int n, int count[], wxPoint points[],
1058                          wxCoord xoffset = 0, wxCoord yoffset = 0,
1059                          wxPolygonFillMode fillStyle = wxODDEVEN_RULE)
1060         { m_pimpl->DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); }
1061 #if WXWIN_COMPATIBILITY_2_8
1062     wxDEPRECATED( void DrawPolygon(const wxList *list,
1063                      wxCoord xoffset = 0, wxCoord yoffset = 0,
1064                      wxPolygonFillMode fillStyle = wxODDEVEN_RULE) );
1065 #endif  // WXWIN_COMPATIBILITY_2_8
1066
1067     void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
1068         { m_pimpl->DoDrawRectangle(x, y, width, height); }
1069     void DrawRectangle(const wxPoint& pt, const wxSize& sz)
1070         { m_pimpl->DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
1071     void DrawRectangle(const wxRect& rect)
1072         { m_pimpl->DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
1073
1074     void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
1075                               double radius)
1076         { m_pimpl->DoDrawRoundedRectangle(x, y, width, height, radius); }
1077     void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
1078                              double radius)
1079         { m_pimpl->DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
1080     void DrawRoundedRectangle(const wxRect& r, double radius)
1081         { m_pimpl->DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
1082
1083     void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
1084         { m_pimpl->DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
1085     void DrawCircle(const wxPoint& pt, wxCoord radius)
1086         { m_pimpl->DoDrawEllipse(pt.x - radius, pt.y - radius, 2*radius, 2*radius); }
1087
1088     void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
1089         { m_pimpl->DoDrawEllipse(x, y, width, height); }
1090     void DrawEllipse(const wxPoint& pt, const wxSize& sz)
1091         { m_pimpl->DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
1092     void DrawEllipse(const wxRect& rect)
1093         { m_pimpl->DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
1094
1095     void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
1096         { m_pimpl->DoDrawIcon(icon, x, y); }
1097     void DrawIcon(const wxIcon& icon, const wxPoint& pt)
1098         { m_pimpl->DoDrawIcon(icon, pt.x, pt.y); }
1099
1100     void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
1101                     bool useMask = false)
1102         { m_pimpl->DoDrawBitmap(bmp, x, y, useMask); }
1103     void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
1104                     bool useMask = false)
1105         { m_pimpl->DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
1106
1107     void DrawText(const wxString& text, wxCoord x, wxCoord y)
1108         { m_pimpl->DoDrawText(text, x, y); }
1109     void DrawText(const wxString& text, const wxPoint& pt)
1110         { m_pimpl->DoDrawText(text, pt.x, pt.y); }
1111
1112     void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
1113         { m_pimpl->DoDrawRotatedText(text, x, y, angle); }
1114     void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
1115         { m_pimpl->DoDrawRotatedText(text, pt.x, pt.y, angle); }
1116
1117     // this version puts both optional bitmap and the text into the given
1118     // rectangle and aligns is as specified by alignment parameter; it also
1119     // will emphasize the character with the given index if it is != -1 and
1120     // return the bounding rectangle if required
1121     void DrawLabel(const wxString& text,
1122                            const wxBitmap& image,
1123                            const wxRect& rect,
1124                            int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1125                            int indexAccel = -1,
1126                            wxRect *rectBounding = NULL);
1127
1128     void DrawLabel(const wxString& text, const wxRect& rect,
1129                    int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1130                    int indexAccel = -1)
1131         { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
1132
1133     bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
1134               wxDC *source, wxCoord xsrc, wxCoord ysrc,
1135               wxRasterOperationMode rop = wxCOPY, bool useMask = false,
1136               wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
1137     {
1138         return m_pimpl->DoBlit(xdest, ydest, width, height,
1139                       source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
1140     }
1141     bool Blit(const wxPoint& destPt, const wxSize& sz,
1142               wxDC *source, const wxPoint& srcPt,
1143               wxRasterOperationMode rop = wxCOPY, bool useMask = false,
1144               const wxPoint& srcPtMask = wxDefaultPosition)
1145     {
1146         return m_pimpl->DoBlit(destPt.x, destPt.y, sz.x, sz.y,
1147                       source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
1148     }
1149
1150     bool StretchBlit(wxCoord dstX, wxCoord dstY,
1151                      wxCoord dstWidth, wxCoord dstHeight,
1152                      wxDC *source,
1153                      wxCoord srcX, wxCoord srcY,
1154                      wxCoord srcWidth, wxCoord srcHeight,
1155                      wxRasterOperationMode rop = wxCOPY, bool useMask = false,
1156                      wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord)
1157     {
1158         return m_pimpl->DoStretchBlit(dstX, dstY, dstWidth, dstHeight,
1159                       source, srcX, srcY, srcWidth, srcHeight, rop, useMask, srcMaskX, srcMaskY);
1160     }
1161     bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize,
1162                      wxDC *source, const wxPoint& srcPt, const wxSize& srcSize,
1163                      wxRasterOperationMode rop = wxCOPY, bool useMask = false,
1164                      const wxPoint& srcMaskPt = wxDefaultPosition)
1165     {
1166         return m_pimpl->DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y,
1167                       source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y);
1168     }
1169
1170     wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const
1171     {
1172         return m_pimpl->DoGetAsBitmap(subrect);
1173     }
1174
1175 #if wxUSE_SPLINES
1176     void DrawSpline(wxCoord x1, wxCoord y1,
1177                     wxCoord x2, wxCoord y2,
1178                     wxCoord x3, wxCoord y3)
1179         { m_pimpl->DrawSpline(x1,y1,x2,y2,x3,y3); }
1180     void DrawSpline(int n, wxPoint points[])
1181         { m_pimpl->DrawSpline(n,points); }
1182     void DrawSpline(const wxPointList *points)
1183         { m_pimpl->DrawSpline(points); }
1184 #endif // wxUSE_SPLINES
1185
1186
1187 #if WXWIN_COMPATIBILITY_2_8
1188     // for compatibility with the old code when wxCoord was long everywhere
1189     wxDEPRECATED( void GetTextExtent(const wxString& string,
1190                        long *x, long *y,
1191                        long *descent = NULL,
1192                        long *externalLeading = NULL,
1193                        const wxFont *theFont = NULL) const );
1194     wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const );
1195     wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const );
1196     wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const );
1197
1198     wxDEPRECATED( void DrawObject(wxDrawObject* drawobject) );
1199 #endif  // WXWIN_COMPATIBILITY_2_8
1200
1201 #ifdef __WXMSW__
1202     // GetHDC() is the simplest way to retrieve an HDC From a wxDC but only
1203     // works if this wxDC is GDI-based and fails for GDI+ contexts (and
1204     // anything else without HDC, e.g. wxPostScriptDC)
1205     WXHDC GetHDC() const;
1206
1207     // don't use these methods manually, use GetTempHDC() instead
1208     virtual WXHDC AcquireHDC() { return GetHDC(); }
1209     virtual void ReleaseHDC(WXHDC WXUNUSED(hdc)) { }
1210
1211     // helper class holding the result of GetTempHDC() with std::auto_ptr<>-like
1212     // semantics, i.e. it is moved when copied
1213     class TempHDC
1214     {
1215     public:
1216         TempHDC(wxDC& dc)
1217             : m_dc(dc),
1218               m_hdc(dc.AcquireHDC())
1219         {
1220         }
1221
1222         TempHDC(const TempHDC& thdc)
1223             : m_dc(thdc.m_dc),
1224               m_hdc(thdc.m_hdc)
1225         {
1226             const_cast<TempHDC&>(thdc).m_hdc = 0;
1227         }
1228
1229         ~TempHDC()
1230         {
1231             if ( m_hdc )
1232                 m_dc.ReleaseHDC(m_hdc);
1233         }
1234
1235         WXHDC GetHDC() const { return m_hdc; }
1236
1237     private:
1238         wxDC& m_dc;
1239         WXHDC m_hdc;
1240
1241         wxDECLARE_NO_ASSIGN_CLASS(TempHDC);
1242     };
1243
1244     // GetTempHDC() also works for wxGCDC (but still not for wxPostScriptDC &c)
1245     TempHDC GetTempHDC() { return TempHDC(*this); }
1246 #endif // __WXMSW__
1247
1248 protected:
1249     // ctor takes ownership of the pointer
1250     wxDC(wxDCImpl *pimpl) : m_pimpl(pimpl) { }
1251
1252     wxDCImpl * const m_pimpl;
1253
1254 private:
1255     DECLARE_ABSTRACT_CLASS(wxDC)
1256     wxDECLARE_NO_COPY_CLASS(wxDC);
1257 };
1258
1259 // ----------------------------------------------------------------------------
1260 // helper class: you can use it to temporarily change the DC text colour and
1261 // restore it automatically when the object goes out of scope
1262 // ----------------------------------------------------------------------------
1263
1264 class WXDLLIMPEXP_CORE wxDCTextColourChanger
1265 {
1266 public:
1267     wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { }
1268
1269     wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc)
1270     {
1271         Set(col);
1272     }
1273
1274     ~wxDCTextColourChanger()
1275     {
1276         if ( m_colFgOld.Ok() )
1277             m_dc.SetTextForeground(m_colFgOld);
1278     }
1279
1280     void Set(const wxColour& col)
1281     {
1282         if ( !m_colFgOld.Ok() )
1283             m_colFgOld = m_dc.GetTextForeground();
1284         m_dc.SetTextForeground(col);
1285     }
1286
1287 private:
1288     wxDC& m_dc;
1289
1290     wxColour m_colFgOld;
1291
1292     wxDECLARE_NO_COPY_CLASS(wxDCTextColourChanger);
1293 };
1294
1295 // ----------------------------------------------------------------------------
1296 // helper class: you can use it to temporarily change the DC pen and
1297 // restore it automatically when the object goes out of scope
1298 // ----------------------------------------------------------------------------
1299
1300 class WXDLLIMPEXP_CORE wxDCPenChanger
1301 {
1302 public:
1303     wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen())
1304     {
1305         m_dc.SetPen(pen);
1306     }
1307
1308     ~wxDCPenChanger()
1309     {
1310         if ( m_penOld.Ok() )
1311             m_dc.SetPen(m_penOld);
1312     }
1313
1314 private:
1315     wxDC& m_dc;
1316
1317     wxPen m_penOld;
1318
1319     wxDECLARE_NO_COPY_CLASS(wxDCPenChanger);
1320 };
1321
1322 // ----------------------------------------------------------------------------
1323 // helper class: you can use it to temporarily change the DC brush and
1324 // restore it automatically when the object goes out of scope
1325 // ----------------------------------------------------------------------------
1326
1327 class WXDLLIMPEXP_CORE wxDCBrushChanger
1328 {
1329 public:
1330     wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush())
1331     {
1332         m_dc.SetBrush(brush);
1333     }
1334
1335     ~wxDCBrushChanger()
1336     {
1337         if ( m_brushOld.Ok() )
1338             m_dc.SetBrush(m_brushOld);
1339     }
1340
1341 private:
1342     wxDC& m_dc;
1343
1344     wxBrush m_brushOld;
1345
1346     wxDECLARE_NO_COPY_CLASS(wxDCBrushChanger);
1347 };
1348
1349 // ----------------------------------------------------------------------------
1350 // another small helper class: sets the clipping region in its ctor and
1351 // destroys it in the dtor
1352 // ----------------------------------------------------------------------------
1353
1354 class WXDLLIMPEXP_CORE wxDCClipper
1355 {
1356 public:
1357     wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc)
1358         { dc.SetClippingRegion(r.GetBox()); }
1359     wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc)
1360         { dc.SetClippingRegion(r.x, r.y, r.width, r.height); }
1361     wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc)
1362         { dc.SetClippingRegion(x, y, w, h); }
1363
1364     ~wxDCClipper() { m_dc.DestroyClippingRegion(); }
1365
1366 private:
1367     wxDC& m_dc;
1368
1369     wxDECLARE_NO_COPY_CLASS(wxDCClipper);
1370 };
1371
1372 // ----------------------------------------------------------------------------
1373 // helper class: you can use it to temporarily change the DC font and
1374 // restore it automatically when the object goes out of scope
1375 // ----------------------------------------------------------------------------
1376
1377 class WXDLLIMPEXP_CORE wxDCFontChanger
1378 {
1379 public:
1380     wxDCFontChanger(wxDC& dc)
1381         : m_dc(dc), m_fontOld()
1382     {
1383     }
1384
1385     wxDCFontChanger(wxDC& dc, const wxFont& font)
1386         : m_dc(dc), m_fontOld(dc.GetFont())
1387     {
1388         m_dc.SetFont(font);
1389     }
1390
1391     void Set(const wxFont& font)
1392     {
1393         if ( !m_fontOld.Ok() )
1394             m_fontOld = m_dc.GetFont();
1395         m_dc.SetFont(font);
1396     }
1397
1398     ~wxDCFontChanger()
1399     {
1400         if ( m_fontOld.Ok() )
1401             m_dc.SetFont(m_fontOld);
1402     }
1403
1404 private:
1405     wxDC& m_dc;
1406
1407     wxFont m_fontOld;
1408
1409     wxDECLARE_NO_COPY_CLASS(wxDCFontChanger);
1410 };
1411
1412
1413 #endif // _WX_DC_H_BASE_