include/wx/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/dc.h
   3 // Purpose:     wxDC class
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     05/25/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DC_H_BASE_
  13 #define _WX_DC_H_BASE_
  14
  15 // ----------------------------------------------------------------------------
  16 // headers which we must include here
  17 // ----------------------------------------------------------------------------
  18
  19 #include "wx/object.h"          // the base class
  20
  21 #include "wx/intl.h"            // for wxLayoutDirection
  22 #include "wx/cursor.h"          // we have member variables of these classes
  23 #include "wx/font.h"            // so we can't do without them
  24 #include "wx/colour.h"
  25 #include "wx/bitmap.h"          // for wxNullBitmap
  26 #include "wx/brush.h"
  27 #include "wx/pen.h"
  28 #include "wx/palette.h"
  29 #include "wx/dynarray.h"
  30 #include "wx/math.h"
  31 #include "wx/image.h"
  32 #include "wx/cmndata.h"
  33
  34 #define wxUSE_NEW_DC 1
  35
  36 class WXDLLIMPEXP_FWD_CORE wxDC;
  37 class WXDLLIMPEXP_FWD_CORE wxClientDC;
  38 class WXDLLIMPEXP_FWD_CORE wxPaintDC;
  39 class WXDLLIMPEXP_FWD_CORE wxWindowDC;
  40 class WXDLLIMPEXP_FWD_CORE wxScreenDC;
  41 class WXDLLIMPEXP_FWD_CORE wxMemoryDC;
  42 class WXDLLIMPEXP_FWD_CORE wxPrinterDC;
  43 class WXDLLIMPEXP_FWD_CORE wxPrintData;
  44
  45 //  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 (same values as used by Windows, don't change)
 108 enum wxMappingMode
 109 {
 110     wxMM_TEXT = 1,
 111     wxMM_LOMETRIC,
 112     wxMM_HIMETRIC,
 113     wxMM_LOENGLISH,
 114     wxMM_HIENGLISH,
 115     wxMM_TWIPS,
 116     wxMM_ISOTROPIC,
 117     wxMM_ANISOTROPIC,
 118     wxMM_POINTS,
 119     wxMM_METRIC
 120 };
 121
 122 //-----------------------------------------------------------------------------
 123 // wxDrawObject helper class
 124 //-----------------------------------------------------------------------------
 125
 126 class WXDLLIMPEXP_CORE wxDrawObject
 127 {
 128 public:
 129
 130     wxDrawObject()
 131         : m_isBBoxValid(false)
 132         , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
 133     { }
 134
 135     virtual ~wxDrawObject() { }
 136
 137     virtual void Draw(wxDC&) const { }
 138
 139     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
 140     {
 141       if ( m_isBBoxValid )
 142       {
 143          if ( x < m_minX ) m_minX = x;
 144          if ( y < m_minY ) m_minY = y;
 145          if ( x > m_maxX ) m_maxX = x;
 146          if ( y > m_maxY ) m_maxY = y;
 147       }
 148       else
 149       {
 150          m_isBBoxValid = true;
 151
 152          m_minX = x;
 153          m_minY = y;
 154          m_maxX = x;
 155          m_maxY = y;
 156       }
 157     }
 158
 159     void ResetBoundingBox()
 160     {
 161         m_isBBoxValid = false;
 162
 163         m_minX = m_maxX = m_minY = m_maxY = 0;
 164     }
 165
 166     // Get the final bounding box of the PostScript or Metafile picture.
 167
 168     wxCoord MinX() const { return m_minX; }
 169     wxCoord MaxX() const { return m_maxX; }
 170     wxCoord MinY() const { return m_minY; }
 171     wxCoord MaxY() const { return m_maxY; }
 172
 173     //to define the type of object for derived objects
 174     virtual int GetType()=0;
 175
 176 protected:
 177     //for boundingbox calculation
 178     bool m_isBBoxValid:1;
 179     //for boundingbox calculation
 180     wxCoord m_minX, m_minY, m_maxX, m_maxY;
 181 };
 182
 183
 184 //-----------------------------------------------------------------------------
 185 // wxDCFactory
 186 //-----------------------------------------------------------------------------
 187
 188 class WXDLLIMPEXP_FWD_CORE wxDCImpl;
 189
 190 class WXDLLIMPEXP_CORE wxDCFactory
 191 {
 192 public:
 193     wxDCFactory() {}
 194     virtual ~wxDCFactory() {}
 195
 196     virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window ) = 0;
 197     virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window ) = 0;
 198     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window ) = 0;
 199     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner ) = 0;
 200     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ) = 0;
 201     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ) = 0;
 202     virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner ) = 0;
 203 #if wxUSE_PRINTING_ARCHITECTURE
 204     virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data  ) = 0;
 205 #endif
 206
 207     static void Set(wxDCFactory *factory);
 208     static wxDCFactory *Get();
 209
 210 private:
 211     static wxDCFactory *m_factory;
 212 };
 213
 214 //-----------------------------------------------------------------------------
 215 // wxNativeDCFactory
 216 //-----------------------------------------------------------------------------
 217
 218 class WXDLLIMPEXP_CORE wxNativeDCFactory: public wxDCFactory
 219 {
 220 public:
 221     wxNativeDCFactory() {}
 222
 223     virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window );
 224     virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window );
 225     virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window );
 226     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner );
 227     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap );
 228     virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc );
 229     virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner );
 230 #if wxUSE_PRINTING_ARCHITECTURE
 231     virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data  );
 232 #endif
 233 };
 234
 235 //-----------------------------------------------------------------------------
 236 // wxDCImpl
 237 //-----------------------------------------------------------------------------
 238
 239 class WXDLLIMPEXP_CORE wxDCImpl: public wxObject
 240 {
 241 public:
 242     wxDCImpl( wxDC *owner );
 243     virtual ~wxDCImpl();
 244
 245     wxDC *GetOwner() const { return m_owner; }
 246
 247     wxWindow* GetWindow() const { return m_window; }
 248
 249     virtual bool IsOk() const { return m_ok; }
 250
 251     // query capabilities
 252
 253     virtual bool CanDrawBitmap() const = 0;
 254     virtual bool CanGetTextExtent() const = 0;
 255
 256     // get Cairo context
 257     virtual void* GetCairoContext() const
 258     {
 259         return NULL;
 260     }
 261
 262     // query dimension, colour deps, resolution
 263
 264     virtual void DoGetSize(int *width, int *height) const = 0;
 265     void GetSize(int *width, int *height) const
 266     {
 267         DoGetSize(width, height);
 268         return ;
 269     }
 270
 271     wxSize GetSize() const
 272     {
 273         int w, h;
 274         DoGetSize(&w, &h);
 275         return wxSize(w, h);
 276     }
 277
 278     virtual void DoGetSizeMM(int* width, int* height) const = 0;
 279
 280     virtual int GetDepth() const = 0;
 281     virtual wxSize GetPPI() const = 0;
 282
 283     // Right-To-Left (RTL) modes
 284
 285     virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) { }
 286     virtual wxLayoutDirection GetLayoutDirection() const  { return wxLayout_Default; }
 287
 288     // page and document
 289
 290     virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; }
 291     virtual void EndDoc() { }
 292
 293     virtual void StartPage() { }
 294     virtual void EndPage() { }
 295
 296     // flushing the content of this dc immediately eg onto screen
 297     virtual void Flush() { }
 298
 299     // bounding box
 300
 301     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
 302     {
 303       if ( m_isBBoxValid )
 304       {
 305          if ( x < m_minX ) m_minX = x;
 306          if ( y < m_minY ) m_minY = y;
 307          if ( x > m_maxX ) m_maxX = x;
 308          if ( y > m_maxY ) m_maxY = y;
 309       }
 310       else
 311       {
 312          m_isBBoxValid = true;
 313
 314          m_minX = x;
 315          m_minY = y;
 316          m_maxX = x;
 317          m_maxY = y;
 318       }
 319     }
 320     void ResetBoundingBox()
 321     {
 322         m_isBBoxValid = false;
 323
 324         m_minX = m_maxX = m_minY = m_maxY = 0;
 325     }
 326
 327     wxCoord MinX() const { return m_minX; }
 328     wxCoord MaxX() const { return m_maxX; }
 329     wxCoord MinY() const { return m_minY; }
 330     wxCoord MaxY() const { return m_maxY; }
 331
 332     // setters and getters
 333
 334     virtual void SetFont(const wxFont& font) = 0;
 335     virtual const wxFont& GetFont() const { return m_font; }
 336
 337     virtual void SetPen(const wxPen& pen) = 0;
 338     virtual const wxPen& GetPen() const { return m_pen; }
 339
 340     virtual void SetBrush(const wxBrush& brush) = 0;
 341     virtual const wxBrush& GetBrush() const { return m_brush; }
 342
 343     virtual void SetBackground(const wxBrush& brush) = 0;
 344     virtual const wxBrush& GetBackground() const { return m_backgroundBrush; }
 345
 346     virtual void SetBackgroundMode(int mode) = 0;
 347     virtual int GetBackgroundMode() const { return m_backgroundMode; }
 348
 349     virtual void SetTextForeground(const wxColour& colour)
 350         { m_textForegroundColour = colour; }
 351     virtual const wxColour& GetTextForeground() const
 352         { return m_textForegroundColour; }
 353
 354     virtual void SetTextBackground(const wxColour& colour)
 355         { m_textBackgroundColour = colour; }
 356     virtual const wxColour& GetTextBackground() const
 357         { return m_textBackgroundColour; }
 358
 359 #if wxUSE_PALETTE
 360     virtual void SetPalette(const wxPalette& palette) = 0;
 361 #endif // wxUSE_PALETTE
 362
 363     // inherit the DC attributes (font and colours) from the given window
 364     //
 365     // this is called automatically when a window, client or paint DC is
 366     // created
 367     virtual void InheritAttributes(wxWindow *win);
 368
 369
 370     // logical functions
 371
 372     virtual void SetLogicalFunction(wxRasterOperationMode function) = 0;
 373     virtual wxRasterOperationMode GetLogicalFunction() const
 374                                       { return m_logicalFunction; }
 375
 376     // text measurement
 377
 378     virtual wxCoord GetCharHeight() const = 0;
 379     virtual wxCoord GetCharWidth() const = 0;
 380     virtual void DoGetTextExtent(const wxString& string,
 381                                  wxCoord *x, wxCoord *y,
 382                                  wxCoord *descent = NULL,
 383                                  wxCoord *externalLeading = NULL,
 384                                  const wxFont *theFont = NULL) const = 0;
 385     virtual void GetMultiLineTextExtent(const wxString& string,
 386                                         wxCoord *width,
 387                                         wxCoord *height,
 388                                         wxCoord *heightLine = NULL,
 389                                         const wxFont *font = NULL) const;
 390     virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
 391
 392     // clearing
 393
 394     virtual void Clear() = 0;
 395
 396     // clipping
 397
 398     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
 399                                      wxCoord width, wxCoord height) = 0;
 400
 401     // NB: this function works with device coordinates, not the logical ones!
 402     virtual void DoSetDeviceClippingRegion(const wxRegion& region) = 0;
 403
 404     virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
 405                                   wxCoord *w, wxCoord *h) const
 406     {
 407         if ( x )
 408             *x = m_clipX1;
 409         if ( y )
 410             *y = m_clipY1;
 411         if ( w )
 412             *w = m_clipX2 - m_clipX1;
 413         if ( h )
 414             *h = m_clipY2 - m_clipY1;
 415     }
 416
 417     virtual void DestroyClippingRegion() { ResetClipping(); }
 418
 419
 420     // coordinates conversions and transforms
 421
 422     virtual wxCoord DeviceToLogicalX(wxCoord x) const;
 423     virtual wxCoord DeviceToLogicalY(wxCoord y) const;
 424     virtual wxCoord DeviceToLogicalXRel(wxCoord x) const;
 425     virtual wxCoord DeviceToLogicalYRel(wxCoord y) const;
 426     virtual wxCoord LogicalToDeviceX(wxCoord x) const;
 427     virtual wxCoord LogicalToDeviceY(wxCoord y) const;
 428     virtual wxCoord LogicalToDeviceXRel(wxCoord x) const;
 429     virtual wxCoord LogicalToDeviceYRel(wxCoord y) const;
 430
 431     virtual void SetMapMode(wxMappingMode mode);
 432     virtual wxMappingMode GetMapMode() const { return m_mappingMode; }
 433
 434     virtual void SetUserScale(double x, double y);
 435     virtual void GetUserScale(double *x, double *y) const
 436     {
 437         if ( x ) *x = m_userScaleX;
 438         if ( y ) *y = m_userScaleY;
 439     }
 440
 441     virtual void SetLogicalScale(double x, double y);
 442     virtual void GetLogicalScale(double *x, double *y)
 443     {
 444         if ( x ) *x = m_logicalScaleX;
 445         if ( y ) *y = m_logicalScaleY;
 446     }
 447
 448     virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
 449     virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const
 450     {
 451         if ( x ) *x = m_logicalOriginX;
 452         if ( y ) *y = m_logicalOriginY;
 453     }
 454
 455     virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
 456     virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
 457     {
 458         if ( x ) *x = m_deviceOriginX;
 459         if ( y ) *y = m_deviceOriginY;
 460     }
 461
 462     virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y );
 463
 464     virtual void ComputeScaleAndOrigin();
 465
 466     // this needs to overidden if the axis is inverted
 467     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 468
 469     // ---------------------------------------------------------
 470     // the actual drawing API
 471
 472     virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
 473                              wxFloodFillStyle style = wxFLOOD_SURFACE) = 0;
 474
 475     virtual void DoGradientFillLinear(const wxRect& rect,
 476                                       const wxColour& initialColour,
 477                                       const wxColour& destColour,
 478                                       wxDirection nDirection = wxEAST);
 479
 480     virtual void DoGradientFillConcentric(const wxRect& rect,
 481                                         const wxColour& initialColour,
 482                                         const wxColour& destColour,
 483                                         const wxPoint& circleCenter);
 484
 485     virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0;
 486
 487     virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0;
 488     virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0;
 489
 490     virtual void DoDrawArc(wxCoord x1, wxCoord y1,
 491                            wxCoord x2, wxCoord y2,
 492                            wxCoord xc, wxCoord yc) = 0;
 493     virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
 494                                  wxCoord width, wxCoord height);
 495     virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 496                                    double sa, double ea) = 0;
 497
 498     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0;
 499     virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 500                                         wxCoord width, wxCoord height,
 501                                         double radius) = 0;
 502     virtual void DoDrawEllipse(wxCoord x, wxCoord y,
 503                                wxCoord width, wxCoord height) = 0;
 504
 505     virtual void DoCrossHair(wxCoord x, wxCoord y) = 0;
 506
 507     virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0;
 508     virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
 509                               bool useMask = false) = 0;
 510
 511     virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0;
 512     virtual void DoDrawRotatedText(const wxString& text,
 513                                    wxCoord x, wxCoord y, double angle) = 0;
 514
 515     virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
 516                         wxCoord width, wxCoord height,
 517                         wxDC *source,
 518                         wxCoord xsrc, wxCoord ysrc,
 519                         wxRasterOperationMode rop = wxCOPY,
 520                         bool useMask = false,
 521                         wxCoord xsrcMask = wxDefaultCoord,
 522                         wxCoord ysrcMask = wxDefaultCoord) = 0;
 523
 524     virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
 525                                wxCoord dstWidth, wxCoord dstHeight,
 526                                wxDC *source,
 527                                wxCoord xsrc, wxCoord ysrc,
 528                                wxCoord srcWidth, wxCoord srcHeight,
 529                                wxRasterOperationMode rop = wxCOPY,
 530                                bool useMask = false,
 531                                wxCoord xsrcMask = wxDefaultCoord,
 532                                wxCoord ysrcMask = wxDefaultCoord);
 533
 534     virtual wxBitmap DoGetAsBitmap(const wxRect *WXUNUSED(subrect)) const
 535         { return wxNullBitmap; }
 536
 537
 538     virtual void DoDrawLines(int n, wxPoint points[],
 539                              wxCoord xoffset, wxCoord yoffset ) = 0;
 540     virtual void DrawLines(const wxPointList *list,
 541                            wxCoord xoffset, wxCoord yoffset );
 542
 543     virtual void DoDrawPolygon(int n, wxPoint points[],
 544                            wxCoord xoffset, wxCoord yoffset,
 545                            wxPolygonFillMode fillStyle = wxODDEVEN_RULE) = 0;
 546     virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
 547                                wxCoord xoffset, wxCoord yoffset,
 548                                wxPolygonFillMode fillStyle);
 549     void DrawPolygon(const wxPointList *list,
 550                      wxCoord xoffset, wxCoord yoffset,
 551                      wxPolygonFillMode fillStyle );
 552
 553
 554 #if wxUSE_SPLINES
 555     void DrawSpline(wxCoord x1, wxCoord y1,
 556                             wxCoord x2, wxCoord y2,
 557                             wxCoord x3, wxCoord y3);
 558     void DrawSpline(int n, wxPoint points[]);
 559     void DrawSpline(const wxPointList *points) { DoDrawSpline(points); }
 560
 561     virtual void DoDrawSpline(const wxPointList *points);
 562 #endif
 563
 564     // ---------------------------------------------------------
 565     // wxMemoryDC Impl API
 566
 567     virtual void DoSelect(const wxBitmap& WXUNUSED(bmp))
 568        { }
 569
 570     virtual const wxBitmap& GetSelectedBitmap() const
 571         { return wxNullBitmap; }
 572     virtual wxBitmap& GetSelectedBitmap()
 573         { return wxNullBitmap; }
 574
 575     // ---------------------------------------------------------
 576     // wxPrinterDC Impl API
 577
 578     virtual wxRect GetPaperRect() const
 579         { int w = 0; int h = 0; DoGetSize( &w, &h ); return wxRect(0,0,w,h); }
 580
 581     virtual int GetResolution() const
 582         { return -1; }
 583
 584 private:
 585     wxDC       *m_owner;
 586
 587 protected:
 588     // unset clipping variables (after clipping region was destroyed)
 589     void ResetClipping()
 590     {
 591         m_clipping = false;
 592
 593         m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0;
 594     }
 595
 596 #ifdef __WXWINCE__
 597     //! Generic method to draw ellipses, circles and arcs with current pen and brush.
 598     /*! \param x Upper left corner of bounding box.
 599      *  \param y Upper left corner of bounding box.
 600      *  \param w Width of bounding box.
 601      *  \param h Height of bounding box.
 602      *  \param sa Starting angle of arc
 603      *            (counterclockwise, start at 3 o'clock, 360 is full circle).
 604      *  \param ea Ending angle of arc.
 605      *  \param angle Rotation angle, the Arc will be rotated after
 606      *               calculating begin and end.
 607      */
 608     void DrawEllipticArcRot( wxCoord x, wxCoord y,
 609                              wxCoord width, wxCoord height,
 610                              double sa = 0, double ea = 0, double angle = 0 )
 611     { DoDrawEllipticArcRot( x, y, width, height, sa, ea, angle ); }
 612
 613     void DrawEllipticArcRot( const wxPoint& pt,
 614                              const wxSize& sz,
 615                              double sa = 0, double ea = 0, double angle = 0 )
 616     { DoDrawEllipticArcRot( pt.x, pt.y, sz.x, sz.y, sa, ea, angle ); }
 617
 618     void DrawEllipticArcRot( const wxRect& rect,
 619                              double sa = 0, double ea = 0, double angle = 0 )
 620     { DoDrawEllipticArcRot( rect.x, rect.y, rect.width, rect.height, sa, ea, angle ); }
 621
 622     virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y,
 623                                        wxCoord w, wxCoord h,
 624                                        double sa = 0, double ea = 0, double angle = 0 );
 625
 626     //! Rotates points around center.
 627     /*! This is a quite straight method, it calculates in pixels
 628      *  and so it produces rounding errors.
 629      *  \param points The points inside will be rotated.
 630      *  \param angle Rotating angle (counterclockwise, start at 3 o'clock, 360 is full circle).
 631      *  \param center Center of rotation.
 632      */
 633     void Rotate( wxPointList* points, double angle, wxPoint center = wxPoint(0,0) );
 634
 635     // used by DrawEllipticArcRot
 636     // Careful: wxList gets filled with points you have to delete later.
 637     void CalculateEllipticPoints( wxPointList* points,
 638                                   wxCoord xStart, wxCoord yStart,
 639                                   wxCoord w, wxCoord h,
 640                                   double sa, double ea );
 641 #endif // __WXWINCE__
 642
 643     // returns adjustment factor for converting wxFont "point size"; in wx
 644     // it is point size on screen and needs to be multiplied by this value
 645     // for rendering on higher-resolution DCs such as printer ones
 646     static float GetFontPointSizeAdjustment(float dpi);
 647
 648     // window on which the DC draws or NULL
 649     wxWindow   *m_window;
 650
 651     // flags
 652     bool m_colour:1;
 653     bool m_ok:1;
 654     bool m_clipping:1;
 655     bool m_isInteractive:1;
 656     bool m_isBBoxValid:1;
 657
 658     // coordinate system variables
 659
 660     wxCoord m_logicalOriginX, m_logicalOriginY;
 661     wxCoord m_deviceOriginX, m_deviceOriginY;           // Usually 0,0, can be change by user
 662
 663     wxCoord m_deviceLocalOriginX, m_deviceLocalOriginY; // non-zero if native top-left corner
 664                                                         // is not at 0,0. This was the case under
 665                                                         // Mac's GrafPorts (coordinate system
 666                                                         // used toplevel window's origin) and
 667                                                         // e.g. for Postscript, where the native
 668                                                         // origin in the bottom left corner.
 669     double m_logicalScaleX, m_logicalScaleY;
 670     double m_userScaleX, m_userScaleY;
 671     double m_scaleX, m_scaleY;  // calculated from logical scale and user scale
 672
 673     int m_signX, m_signY;  // Used by SetAxisOrientation() to invert the axes
 674
 675     // what is a mm on a screen you don't know the size of?
 676     double       m_mm_to_pix_x,
 677                  m_mm_to_pix_y;
 678
 679     // bounding and clipping boxes
 680     wxCoord m_minX, m_minY, m_maxX, m_maxY;
 681     wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2;
 682
 683     wxRasterOperationMode m_logicalFunction;
 684     int m_backgroundMode;
 685     wxMappingMode m_mappingMode;
 686
 687     wxPen             m_pen;
 688     wxBrush           m_brush;
 689     wxBrush           m_backgroundBrush;
 690     wxColour          m_textForegroundColour;
 691     wxColour          m_textBackgroundColour;
 692     wxFont            m_font;
 693
 694 #if wxUSE_PALETTE
 695     wxPalette         m_palette;
 696     bool              m_hasCustomPalette;
 697 #endif // wxUSE_PALETTE
 698
 699 private:
 700     DECLARE_ABSTRACT_CLASS(wxDCImpl)
 701 };
 702
 703
 704 class WXDLLIMPEXP_CORE wxDC : public wxObject
 705 {
 706 public:
 707     virtual ~wxDC() { delete m_pimpl; }
 708
 709     wxDCImpl *GetImpl()
 710         { return m_pimpl; }
 711     const wxDCImpl *GetImpl() const
 712         { return m_pimpl; }
 713
 714     wxWindow *GetWindow() const
 715         { return m_pimpl->GetWindow(); }
 716
 717     bool IsOk() const
 718         { return m_pimpl && m_pimpl->IsOk(); }
 719
 720     // query capabilities
 721
 722     bool CanDrawBitmap() const
 723         { return m_pimpl->CanDrawBitmap(); }
 724     bool CanGetTextExtent() const
 725         { return m_pimpl->CanGetTextExtent(); }
 726
 727     // query dimension, colour deps, resolution
 728
 729     void GetSize(int *width, int *height) const
 730         { m_pimpl->DoGetSize(width, height); }
 731     wxSize GetSize() const
 732         { return m_pimpl->GetSize(); }
 733
 734     void GetSizeMM(int* width, int* height) const
 735         { m_pimpl->DoGetSizeMM(width, height); }
 736     wxSize GetSizeMM() const
 737     {
 738         int w, h;
 739         m_pimpl->DoGetSizeMM(&w, &h);
 740         return wxSize(w, h);
 741     }
 742
 743     int GetDepth() const
 744         { return m_pimpl->GetDepth(); }
 745     wxSize GetPPI() const
 746         { return m_pimpl->GetPPI(); }
 747
 748     virtual int GetResolution() const
 749         { return m_pimpl->GetResolution(); }
 750
 751     // Right-To-Left (RTL) modes
 752
 753     void SetLayoutDirection(wxLayoutDirection dir)
 754         { m_pimpl->SetLayoutDirection( dir ); }
 755     wxLayoutDirection GetLayoutDirection() const
 756         { return m_pimpl->GetLayoutDirection(); }
 757
 758     // page and document
 759
 760     bool StartDoc(const wxString& message)
 761         { return m_pimpl->StartDoc(message); }
 762     void EndDoc()
 763         { m_pimpl->EndDoc(); }
 764
 765     void StartPage()
 766         { m_pimpl->StartPage(); }
 767     void EndPage()
 768         { m_pimpl->EndPage(); }
 769
 770     // bounding box
 771
 772     void CalcBoundingBox(wxCoord x, wxCoord y)
 773         { m_pimpl->CalcBoundingBox(x,y); }
 774     void ResetBoundingBox()
 775         { m_pimpl->ResetBoundingBox(); }
 776
 777     wxCoord MinX() const
 778         { return m_pimpl->MinX(); }
 779     wxCoord MaxX() const
 780         { return m_pimpl->MaxX(); }
 781     wxCoord MinY() const
 782         { return m_pimpl->MinY(); }
 783     wxCoord MaxY() const
 784         { return m_pimpl->MaxY(); }
 785
 786     // setters and getters
 787
 788     void SetFont(const wxFont& font)
 789         { m_pimpl->SetFont( font ); }
 790     const wxFont&   GetFont() const
 791         { return m_pimpl->GetFont(); }
 792
 793     void SetPen(const wxPen& pen)
 794         { m_pimpl->SetPen( pen ); }
 795     const wxPen&    GetPen() const
 796         { return m_pimpl->GetPen(); }
 797
 798     void SetBrush(const wxBrush& brush)
 799         { m_pimpl->SetBrush( brush ); }
 800     const wxBrush&  GetBrush() const
 801         { return m_pimpl->GetBrush(); }
 802
 803     void SetBackground(const wxBrush& brush)
 804         { m_pimpl->SetBackground( brush ); }
 805     const wxBrush&  GetBackground() const
 806         { return m_pimpl->GetBackground(); }
 807
 808     void SetBackgroundMode(int mode)
 809         { m_pimpl->SetBackgroundMode( mode ); }
 810     int GetBackgroundMode() const
 811         { return m_pimpl->GetBackgroundMode(); }
 812
 813     void SetTextForeground(const wxColour& colour)
 814         { m_pimpl->SetTextForeground(colour); }
 815     const wxColour& GetTextForeground() const
 816         { return m_pimpl->GetTextForeground(); }
 817
 818     void SetTextBackground(const wxColour& colour)
 819         { m_pimpl->SetTextBackground(colour); }
 820     const wxColour& GetTextBackground() const
 821         { return m_pimpl->GetTextBackground(); }
 822
 823 #if wxUSE_PALETTE
 824     void SetPalette(const wxPalette& palette)
 825         { m_pimpl->SetPalette(palette); }
 826 #endif // wxUSE_PALETTE
 827
 828     // logical functions
 829
 830     void SetLogicalFunction(wxRasterOperationMode function)
 831         { m_pimpl->SetLogicalFunction(function); }
 832     wxRasterOperationMode GetLogicalFunction() const
 833         { return m_pimpl->GetLogicalFunction(); }
 834
 835     // text measurement
 836
 837     wxCoord GetCharHeight() const
 838         { return m_pimpl->GetCharHeight(); }
 839     wxCoord GetCharWidth() const
 840         { return m_pimpl->GetCharWidth(); }
 841
 842     void GetTextExtent(const wxString& string,
 843                        wxCoord *x, wxCoord *y,
 844                        wxCoord *descent = NULL,
 845                        wxCoord *externalLeading = NULL,
 846                        const wxFont *theFont = NULL) const
 847         { m_pimpl->DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
 848
 849     wxSize GetTextExtent(const wxString& string) const
 850     {
 851         wxCoord w, h;
 852         m_pimpl->DoGetTextExtent(string, &w, &h);
 853         return wxSize(w, h);
 854     }
 855
 856     void GetMultiLineTextExtent(const wxString& string,
 857                                         wxCoord *width,
 858                                         wxCoord *height,
 859                                         wxCoord *heightLine = NULL,
 860                                         const wxFont *font = NULL) const
 861         { m_pimpl->GetMultiLineTextExtent( string, width, height, heightLine, font ); }
 862
 863     wxSize GetMultiLineTextExtent(const wxString& string) const
 864     {
 865         wxCoord w, h;
 866         m_pimpl->GetMultiLineTextExtent(string, &w, &h);
 867         return wxSize(w, h);
 868     }
 869
 870     bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
 871         { return m_pimpl->DoGetPartialTextExtents(text, widths); }
 872
 873     // clearing
 874
 875     void Clear()
 876         { m_pimpl->Clear(); }
 877
 878     // clipping
 879
 880     void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 881         { m_pimpl->DoSetClippingRegion(x, y, width, height); }
 882     void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
 883         { m_pimpl->DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
 884     void SetClippingRegion(const wxRect& rect)
 885         { m_pimpl->DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); }
 886
 887     // unlike the functions above, the coordinates of the region used in this
 888     // one are in device coordinates, not the logical ones
 889     void SetDeviceClippingRegion(const wxRegion& region)
 890         { m_pimpl->DoSetDeviceClippingRegion(region); }
 891
 892     // this function is deprecated because its name is confusing: you may
 893     // expect it to work with logical coordinates but, in fact, it does exactly
 894     // the same thing as SetDeviceClippingRegion()
 895     //
 896     // please review the code using it and either replace it with calls to
 897     // SetDeviceClippingRegion() or correct it if it was [wrongly] passing
 898     // logical coordinates to this function
 899     wxDEPRECATED_INLINE(void SetClippingRegion(const wxRegion& region),
 900                         SetDeviceClippingRegion(region); )
 901
 902     void DestroyClippingRegion()
 903         { m_pimpl->DestroyClippingRegion(); }
 904
 905     void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
 906         { m_pimpl->DoGetClippingBox(x, y, w, h); }
 907     void GetClippingBox(wxRect& rect) const
 908         { m_pimpl->DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); }
 909
 910     // coordinates conversions and transforms
 911
 912     wxCoord DeviceToLogicalX(wxCoord x) const
 913         { return m_pimpl->DeviceToLogicalX(x); }
 914     wxCoord DeviceToLogicalY(wxCoord y) const
 915         { return m_pimpl->DeviceToLogicalY(y); }
 916     wxCoord DeviceToLogicalXRel(wxCoord x) const
 917         { return m_pimpl->DeviceToLogicalXRel(x); }
 918     wxCoord DeviceToLogicalYRel(wxCoord y) const
 919         { return m_pimpl->DeviceToLogicalYRel(y); }
 920     wxCoord LogicalToDeviceX(wxCoord x) const
 921         { return m_pimpl->LogicalToDeviceX(x); }
 922     wxCoord LogicalToDeviceY(wxCoord y) const
 923         { return m_pimpl->LogicalToDeviceY(y); }
 924     wxCoord LogicalToDeviceXRel(wxCoord x) const
 925         { return m_pimpl->LogicalToDeviceXRel(x); }
 926     wxCoord LogicalToDeviceYRel(wxCoord y) const
 927         { return m_pimpl->LogicalToDeviceYRel(y); }
 928
 929     void SetMapMode(wxMappingMode mode)
 930         { m_pimpl->SetMapMode(mode); }
 931     wxMappingMode GetMapMode() const
 932         { return m_pimpl->GetMapMode(); }
 933
 934     void SetUserScale(double x, double y)
 935         { m_pimpl->SetUserScale(x,y); }
 936     void GetUserScale(double *x, double *y) const
 937         { m_pimpl->GetUserScale( x, y ); }
 938
 939     void SetLogicalScale(double x, double y)
 940         { m_pimpl->SetLogicalScale( x, y ); }
 941     void GetLogicalScale(double *x, double *y)
 942         { m_pimpl->GetLogicalScale( x, y ); }
 943
 944     void SetLogicalOrigin(wxCoord x, wxCoord y)
 945         { m_pimpl->SetLogicalOrigin(x,y); }
 946     void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
 947         { m_pimpl->DoGetLogicalOrigin(x, y); }
 948     wxPoint GetLogicalOrigin() const
 949         { wxCoord x, y; m_pimpl->DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
 950
 951     void SetDeviceOrigin(wxCoord x, wxCoord y)
 952         { m_pimpl->SetDeviceOrigin( x, y); }
 953     void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
 954         { m_pimpl->DoGetDeviceOrigin(x, y); }
 955     wxPoint GetDeviceOrigin() const
 956         { wxCoord x, y; m_pimpl->DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
 957
 958     void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
 959         { m_pimpl->SetAxisOrientation(xLeftRight, yBottomUp); }
 960
 961     // mostly internal
 962     void SetDeviceLocalOrigin( wxCoord x, wxCoord y )
 963         { m_pimpl->SetDeviceLocalOrigin( x, y ); }
 964
 965
 966     // draw generic object
 967
 968     void DrawObject(wxDrawObject* drawobject)
 969     {
 970         drawobject->Draw(*this);
 971         CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
 972         CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
 973     }
 974
 975     // -----------------------------------------------
 976     // the actual drawing API
 977
 978     bool FloodFill(wxCoord x, wxCoord y, const wxColour& col,
 979                    wxFloodFillStyle style = wxFLOOD_SURFACE)
 980         { return m_pimpl->DoFloodFill(x, y, col, style); }
 981     bool FloodFill(const wxPoint& pt, const wxColour& col,
 982                    wxFloodFillStyle style = wxFLOOD_SURFACE)
 983         { return m_pimpl->DoFloodFill(pt.x, pt.y, col, style); }
 984
 985     // fill the area specified by rect with a radial gradient, starting from
 986     // initialColour in the centre of the cercle and fading to destColour.
 987     void GradientFillConcentric(const wxRect& rect,
 988                                 const wxColour& initialColour,
 989                                 const wxColour& destColour)
 990         { m_pimpl->DoGradientFillConcentric( rect, initialColour, destColour,
 991                                              wxPoint(rect.GetWidth() / 2,
 992                                                      rect.GetHeight() / 2)); }
 993
 994     void GradientFillConcentric(const wxRect& rect,
 995                                 const wxColour& initialColour,
 996                                 const wxColour& destColour,
 997                                 const wxPoint& circleCenter)
 998         { m_pimpl->DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); }
 999
1000     // fill the area specified by rect with a linear gradient
1001     void GradientFillLinear(const wxRect& rect,
1002                             const wxColour& initialColour,
1003                             const wxColour& destColour,
1004                             wxDirection nDirection = wxEAST)
1005         { m_pimpl->DoGradientFillLinear(rect, initialColour, destColour, nDirection); }
1006
1007     bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
1008         { return m_pimpl->DoGetPixel(x, y, col); }
1009     bool GetPixel(const wxPoint& pt, wxColour *col) const
1010         { return m_pimpl->DoGetPixel(pt.x, pt.y, col); }
1011
1012     void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
1013         { m_pimpl->DoDrawLine(x1, y1, x2, y2); }
1014     void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
1015         { m_pimpl->DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
1016
1017     void CrossHair(wxCoord x, wxCoord y)
1018         { m_pimpl->DoCrossHair(x, y); }
1019     void CrossHair(const wxPoint& pt)
1020         { m_pimpl->DoCrossHair(pt.x, pt.y); }
1021
1022     void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
1023                  wxCoord xc, wxCoord yc)
1024         { m_pimpl->DoDrawArc(x1, y1, x2, y2, xc, yc); }
1025     void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
1026         { m_pimpl->DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
1027
1028     void DrawCheckMark(wxCoord x, wxCoord y,
1029                        wxCoord width, wxCoord height)
1030         { m_pimpl->DoDrawCheckMark(x, y, width, height); }
1031     void DrawCheckMark(const wxRect& rect)
1032         { m_pimpl->DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
1033
1034     void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
1035                          double sa, double ea)
1036         { m_pimpl->DoDrawEllipticArc(x, y, w, h, sa, ea); }
1037     void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
1038                          double sa, double ea)
1039         { m_pimpl->DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
1040
1041     void DrawPoint(wxCoord x, wxCoord y)
1042         { m_pimpl->DoDrawPoint(x, y); }
1043     void DrawPoint(const wxPoint& pt)
1044         { m_pimpl->DoDrawPoint(pt.x, pt.y); }
1045
1046     void DrawLines(int n, wxPoint points[],
1047                    wxCoord xoffset = 0, wxCoord yoffset = 0)
1048         { m_pimpl->DoDrawLines(n, points, xoffset, yoffset); }
1049     void DrawLines(const wxPointList *list,
1050                    wxCoord xoffset = 0, wxCoord yoffset = 0)
1051         { m_pimpl->DrawLines( list, xoffset, yoffset ); }
1052 #if WXWIN_COMPATIBILITY_2_8
1053     wxDEPRECATED( void DrawLines(const wxList *list,
1054                                  wxCoord xoffset = 0, wxCoord yoffset = 0) );
1055 #endif  // WXWIN_COMPATIBILITY_2_8
1056
1057     void DrawPolygon(int n, wxPoint points[],
1058                      wxCoord xoffset = 0, wxCoord yoffset = 0,
1059                      wxPolygonFillMode fillStyle = wxODDEVEN_RULE)
1060         { m_pimpl->DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
1061     void DrawPolygon(const wxPointList *list,
1062                      wxCoord xoffset = 0, wxCoord yoffset = 0,
1063                      wxPolygonFillMode fillStyle = wxODDEVEN_RULE)
1064         { m_pimpl->DrawPolygon( list, xoffset, yoffset, fillStyle ); }
1065     void DrawPolyPolygon(int n, int count[], wxPoint points[],
1066                          wxCoord xoffset = 0, wxCoord yoffset = 0,
1067                          wxPolygonFillMode fillStyle = wxODDEVEN_RULE)
1068         { m_pimpl->DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); }
1069 #if WXWIN_COMPATIBILITY_2_8
1070     wxDEPRECATED( void DrawPolygon(const wxList *list,
1071                      wxCoord xoffset = 0, wxCoord yoffset = 0,
1072                      wxPolygonFillMode fillStyle = wxODDEVEN_RULE) );
1073 #endif  // WXWIN_COMPATIBILITY_2_8
1074
1075     void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
1076         { m_pimpl->DoDrawRectangle(x, y, width, height); }
1077     void DrawRectangle(const wxPoint& pt, const wxSize& sz)
1078         { m_pimpl->DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
1079     void DrawRectangle(const wxRect& rect)
1080         { m_pimpl->DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
1081
1082     void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
1083                               double radius)
1084         { m_pimpl->DoDrawRoundedRectangle(x, y, width, height, radius); }
1085     void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
1086                              double radius)
1087         { m_pimpl->DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
1088     void DrawRoundedRectangle(const wxRect& r, double radius)
1089         { m_pimpl->DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
1090
1091     void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
1092         { m_pimpl->DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
1093     void DrawCircle(const wxPoint& pt, wxCoord radius)
1094         { m_pimpl->DoDrawEllipse(pt.x - radius, pt.y - radius, 2*radius, 2*radius); }
1095
1096     void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
1097         { m_pimpl->DoDrawEllipse(x, y, width, height); }
1098     void DrawEllipse(const wxPoint& pt, const wxSize& sz)
1099         { m_pimpl->DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
1100     void DrawEllipse(const wxRect& rect)
1101         { m_pimpl->DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
1102
1103     void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
1104         { m_pimpl->DoDrawIcon(icon, x, y); }
1105     void DrawIcon(const wxIcon& icon, const wxPoint& pt)
1106         { m_pimpl->DoDrawIcon(icon, pt.x, pt.y); }
1107
1108     void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
1109                     bool useMask = false)
1110         { m_pimpl->DoDrawBitmap(bmp, x, y, useMask); }
1111     void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
1112                     bool useMask = false)
1113         { m_pimpl->DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
1114
1115     void DrawText(const wxString& text, wxCoord x, wxCoord y)
1116         { m_pimpl->DoDrawText(text, x, y); }
1117     void DrawText(const wxString& text, const wxPoint& pt)
1118         { m_pimpl->DoDrawText(text, pt.x, pt.y); }
1119
1120     void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
1121         { m_pimpl->DoDrawRotatedText(text, x, y, angle); }
1122     void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
1123         { m_pimpl->DoDrawRotatedText(text, pt.x, pt.y, angle); }
1124
1125     // this version puts both optional bitmap and the text into the given
1126     // rectangle and aligns is as specified by alignment parameter; it also
1127     // will emphasize the character with the given index if it is != -1 and
1128     // return the bounding rectangle if required
1129     void DrawLabel(const wxString& text,
1130                            const wxBitmap& image,
1131                            const wxRect& rect,
1132                            int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1133                            int indexAccel = -1,
1134                            wxRect *rectBounding = NULL);
1135
1136     void DrawLabel(const wxString& text, const wxRect& rect,
1137                    int alignment = wxALIGN_LEFT | wxALIGN_TOP,
1138                    int indexAccel = -1)
1139         { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
1140
1141     bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
1142               wxDC *source, wxCoord xsrc, wxCoord ysrc,
1143               wxRasterOperationMode rop = wxCOPY, bool useMask = false,
1144               wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
1145     {
1146         return m_pimpl->DoBlit(xdest, ydest, width, height,
1147                       source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
1148     }
1149     bool Blit(const wxPoint& destPt, const wxSize& sz,
1150               wxDC *source, const wxPoint& srcPt,
1151               wxRasterOperationMode rop = wxCOPY, bool useMask = false,
1152               const wxPoint& srcPtMask = wxDefaultPosition)
1153     {
1154         return m_pimpl->DoBlit(destPt.x, destPt.y, sz.x, sz.y,
1155                       source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
1156     }
1157
1158     bool StretchBlit(wxCoord dstX, wxCoord dstY,
1159                      wxCoord dstWidth, wxCoord dstHeight,
1160                      wxDC *source,
1161                      wxCoord srcX, wxCoord srcY,
1162                      wxCoord srcWidth, wxCoord srcHeight,
1163                      wxRasterOperationMode rop = wxCOPY, bool useMask = false,
1164                      wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord)
1165     {
1166         return m_pimpl->DoStretchBlit(dstX, dstY, dstWidth, dstHeight,
1167                       source, srcX, srcY, srcWidth, srcHeight, rop, useMask, srcMaskX, srcMaskY);
1168     }
1169     bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize,
1170                      wxDC *source, const wxPoint& srcPt, const wxSize& srcSize,
1171                      wxRasterOperationMode rop = wxCOPY, bool useMask = false,
1172                      const wxPoint& srcMaskPt = wxDefaultPosition)
1173     {
1174         return m_pimpl->DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y,
1175                       source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y);
1176     }
1177
1178     wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const
1179     {
1180         return m_pimpl->DoGetAsBitmap(subrect);
1181     }
1182
1183 #if wxUSE_SPLINES
1184     void DrawSpline(wxCoord x1, wxCoord y1,
1185                     wxCoord x2, wxCoord y2,
1186                     wxCoord x3, wxCoord y3)
1187         { m_pimpl->DrawSpline(x1,y1,x2,y2,x3,y3); }
1188     void DrawSpline(int n, wxPoint points[])
1189         { m_pimpl->DrawSpline(n,points); }
1190     void DrawSpline(const wxPointList *points)
1191         { m_pimpl->DrawSpline(points); }
1192 #endif // wxUSE_SPLINES
1193
1194
1195 #if WXWIN_COMPATIBILITY_2_8
1196     // for compatibility with the old code when wxCoord was long everywhere
1197     wxDEPRECATED( void GetTextExtent(const wxString& string,
1198                        long *x, long *y,
1199                        long *descent = NULL,
1200                        long *externalLeading = NULL,
1201                        const wxFont *theFont = NULL) const );
1202     wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const );
1203     wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const );
1204     wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const );
1205
1206 #endif  // WXWIN_COMPATIBILITY_2_8
1207
1208 #ifdef __WXMSW__
1209     WXHDC GetHDC() const;
1210 #endif // __WXMSW__
1211
1212 protected:
1213     // ctor takes ownership of the pointer
1214     wxDC(wxDCImpl *pimpl) : m_pimpl(pimpl) { }
1215
1216     wxDCImpl * const m_pimpl;
1217
1218 private:
1219     DECLARE_ABSTRACT_CLASS(wxDC)
1220     DECLARE_NO_COPY_CLASS(wxDC)
1221 };
1222
1223 // ----------------------------------------------------------------------------
1224 // helper class: you can use it to temporarily change the DC text colour and
1225 // restore it automatically when the object goes out of scope
1226 // ----------------------------------------------------------------------------
1227
1228 class WXDLLIMPEXP_CORE wxDCTextColourChanger
1229 {
1230 public:
1231     wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { }
1232
1233     wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc)
1234     {
1235         Set(col);
1236     }
1237
1238     ~wxDCTextColourChanger()
1239     {
1240         if ( m_colFgOld.Ok() )
1241             m_dc.SetTextForeground(m_colFgOld);
1242     }
1243
1244     void Set(const wxColour& col)
1245     {
1246         if ( !m_colFgOld.Ok() )
1247             m_colFgOld = m_dc.GetTextForeground();
1248         m_dc.SetTextForeground(col);
1249     }
1250
1251 private:
1252     wxDC& m_dc;
1253
1254     wxColour m_colFgOld;
1255
1256     DECLARE_NO_COPY_CLASS(wxDCTextColourChanger)
1257 };
1258
1259 // ----------------------------------------------------------------------------
1260 // helper class: you can use it to temporarily change the DC pen and
1261 // restore it automatically when the object goes out of scope
1262 // ----------------------------------------------------------------------------
1263
1264 class WXDLLIMPEXP_CORE wxDCPenChanger
1265 {
1266 public:
1267     wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen())
1268     {
1269         m_dc.SetPen(pen);
1270     }
1271
1272     ~wxDCPenChanger()
1273     {
1274         if ( m_penOld.Ok() )
1275             m_dc.SetPen(m_penOld);
1276     }
1277
1278 private:
1279     wxDC& m_dc;
1280
1281     wxPen m_penOld;
1282
1283     DECLARE_NO_COPY_CLASS(wxDCPenChanger)
1284 };
1285
1286 // ----------------------------------------------------------------------------
1287 // helper class: you can use it to temporarily change the DC brush and
1288 // restore it automatically when the object goes out of scope
1289 // ----------------------------------------------------------------------------
1290
1291 class WXDLLIMPEXP_CORE wxDCBrushChanger
1292 {
1293 public:
1294     wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush())
1295     {
1296         m_dc.SetBrush(brush);
1297     }
1298
1299     ~wxDCBrushChanger()
1300     {
1301         if ( m_brushOld.Ok() )
1302             m_dc.SetBrush(m_brushOld);
1303     }
1304
1305 private:
1306     wxDC& m_dc;
1307
1308     wxBrush m_brushOld;
1309
1310     DECLARE_NO_COPY_CLASS(wxDCBrushChanger)
1311 };
1312
1313 // ----------------------------------------------------------------------------
1314 // another small helper class: sets the clipping region in its ctor and
1315 // destroys it in the dtor
1316 // ----------------------------------------------------------------------------
1317
1318 class WXDLLIMPEXP_CORE wxDCClipper
1319 {
1320 public:
1321     wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc)
1322         { dc.SetClippingRegion(r.GetBox()); }
1323     wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc)
1324         { dc.SetClippingRegion(r.x, r.y, r.width, r.height); }
1325     wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc)
1326         { dc.SetClippingRegion(x, y, w, h); }
1327
1328     ~wxDCClipper() { m_dc.DestroyClippingRegion(); }
1329
1330 private:
1331     wxDC& m_dc;
1332
1333     DECLARE_NO_COPY_CLASS(wxDCClipper)
1334 };
1335
1336 // ----------------------------------------------------------------------------
1337 // helper class: you can use it to temporarily change the DC font and
1338 // restore it automatically when the object goes out of scope
1339 // ----------------------------------------------------------------------------
1340
1341 class WXDLLIMPEXP_CORE wxDCFontChanger
1342 {
1343 public:
1344     wxDCFontChanger(wxDC& dc, const wxFont& font) : m_dc(dc), m_fontOld(dc.GetFont())
1345     {
1346         m_dc.SetFont(font);
1347     }
1348
1349     ~wxDCFontChanger()
1350     {
1351         if ( m_fontOld.Ok() )
1352             m_dc.SetFont(m_fontOld);
1353     }
1354
1355 private:
1356     wxDC& m_dc;
1357
1358     wxFont m_fontOld;
1359
1360     DECLARE_NO_COPY_CLASS(wxDCFontChanger)
1361 };
1362
1363
1364 #endif // _WX_DC_H_BASE_