src/common/graphcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/graphcmn.cpp
   3 // Purpose:     graphics context methods common to all platforms
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #if defined(__BORLANDC__)
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/graphics.h"
  28
  29 #if wxUSE_GRAPHICS_CONTEXT
  30
  31 //-----------------------------------------------------------------------------
  32 // constants
  33 //-----------------------------------------------------------------------------
  34
  35 const double RAD2DEG = 180.0 / M_PI;
  36 const short kEmulatedMode = -1;
  37 const short kUnsupportedMode = -2;
  38
  39 //-----------------------------------------------------------------------------
  40 // Local functions
  41 //-----------------------------------------------------------------------------
  42
  43 static inline double dmin(double a, double b)
  44 {
  45     return a < b ? a : b;
  46 }
  47 static inline double dmax(double a, double b)
  48 {
  49     return a > b ? a : b;
  50 }
  51
  52 static inline double DegToRad(double deg)
  53 {
  54     return (deg * M_PI) / 180.0;
  55 }
  56 static inline double RadToDeg(double deg)
  57 {
  58     return (deg * 180.0) / M_PI;
  59 }
  60
  61
  62 wxPoint2DDouble wxGraphicsPath::GetCurrentPoint()
  63 {
  64     wxDouble x,y ;
  65     GetCurrentPoint(x,y);
  66     return wxPoint2DDouble(x,y);
  67 }
  68
  69 void wxGraphicsPath::MoveToPoint( const wxPoint2DDouble& p)
  70 {
  71     MoveToPoint( p.m_x , p.m_y);
  72 }
  73
  74 void wxGraphicsPath::AddLineToPoint( const wxPoint2DDouble& p)
  75 {
  76     AddLineToPoint( p.m_x , p.m_y);
  77 }
  78
  79 void wxGraphicsPath::AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e)
  80 {
  81     AddCurveToPoint(c1.m_x, c1.m_y, c2.m_x, c2.m_y, e.m_x, e.m_y);
  82 }
  83
  84 void wxGraphicsPath::AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise)
  85 {
  86     AddArc(c.m_x, c.m_y, r, startAngle, endAngle, clockwise);
  87 }
  88
  89 //
  90 // Emulations
  91 //
  92
  93 void wxGraphicsPath::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y )
  94 {
  95     // calculate using degree elevation to a cubic bezier
  96     wxPoint2DDouble c1 ;
  97     wxPoint2DDouble c2 ;
  98
  99     wxPoint2DDouble start = GetCurrentPoint() ;
 100     wxPoint2DDouble end(x,y);
 101     wxPoint2DDouble c(cx,cy);
 102     c1 = (1/3.0) * start + (2/3.0) * c;
 103     c2 = (2/3.0) * c + (1/3.0) * end ;
 104     AddCurveToPoint(c1.m_x,c1.m_y,c2.m_x,c2.m_y,x,y);
 105 }
 106
 107 void wxGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 108 {
 109     MoveToPoint(x,y);
 110     AddLineToPoint(x,y+h);
 111     AddLineToPoint(x+w,y+h);
 112     AddLineToPoint(x+w,y);
 113     CloseSubpath();
 114 }
 115
 116 void wxGraphicsPath::AddCircle( wxDouble x, wxDouble y, wxDouble r )
 117 {
 118     MoveToPoint(x+r,y);
 119     AddArc( x,y,r,0,2*M_PI,false);
 120     CloseSubpath();
 121 }
 122
 123 // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
 124 void wxGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
 125 {
 126     wxPoint2DDouble current = GetCurrentPoint();
 127     wxPoint2DDouble p1(x1,y1);
 128     wxPoint2DDouble p2(x2,y2);
 129
 130     wxPoint2DDouble v1 = current - p1 ;
 131     v1.Normalize();
 132     wxPoint2DDouble v2 = p2 - p1 ;
 133     v2.Normalize();
 134
 135     wxDouble alpha = v1.GetVectorAngle() - v2.GetVectorAngle();
 136
 137     if ( alpha < 0 )
 138         alpha = 360 + alpha ;
 139     // TODO obtuse angles
 140
 141     alpha = DegToRad(alpha);
 142
 143     wxDouble dist = r / sin(alpha/2) * cos(alpha/2) ;
 144     // calculate tangential points
 145     wxPoint2DDouble t1 = dist*v1 + p1 ;
 146     wxPoint2DDouble t2 = dist*v2 + p1 ;
 147
 148     wxPoint2DDouble nv1 = v1 ;
 149     nv1.SetVectorAngle(v1.GetVectorAngle()-90);
 150     wxPoint2DDouble c = t1 + r*nv1;
 151
 152     wxDouble a1 = v1.GetVectorAngle()+90 ;
 153     wxDouble a2 = v2.GetVectorAngle()-90 ;
 154
 155     AddLineToPoint(t1);
 156     AddArc(c.m_x,c.m_y,r,DegToRad(a1),DegToRad(a2),true);
 157     AddLineToPoint(p2);
 158 }
 159
 160 //-----------------------------------------------------------------------------
 161 // wxGraphicsContext Convenience Methods
 162 //-----------------------------------------------------------------------------
 163
 164 void wxGraphicsContext::DrawPath( const wxGraphicsPath *path, int fillStyle )
 165 {
 166     FillPath( path , fillStyle );
 167     StrokePath( path );
 168 }
 169
 170 void wxGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
 171 {
 172     Translate(x,y) ;
 173     Rotate( -angle );
 174     DrawText( str , 0, 0 );
 175     Rotate( angle );
 176     Translate(-x,-y) ;
 177 }
 178
 179 void wxGraphicsContext::StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2)
 180 {
 181     wxGraphicsPath* path = CreatePath();
 182     path->MoveToPoint(x1, y1) ;
 183     path->AddLineToPoint( x2, y2 );
 184     StrokePath( path );
 185     delete path;
 186 }
 187
 188 void wxGraphicsContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h)
 189 {
 190     wxGraphicsPath* path = CreatePath();
 191     path->AddRectangle( x , y , w , h );
 192     DrawPath( path );
 193     delete path;
 194 }
 195
 196 void wxGraphicsContext::DrawEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h)
 197 {
 198     wxGraphicsPath* path = CreatePath();
 199     if ( w == h )
 200     {
 201         path->AddCircle( x+w/2,y+w/2,w/2);
 202         DrawPath(path);
 203     }
 204     else
 205     {
 206         PushState();
 207         Translate(x+w/2,y+h/2);
 208         wxDouble factor = ((wxDouble) w) / h ;
 209         Scale( factor , 1.0) ;
 210         path->AddCircle(0,0,h/2);
 211         DrawPath(path);
 212         PopState();
 213     }
 214     delete path;
 215 }
 216
 217 void wxGraphicsContext::DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius)
 218 {
 219     wxGraphicsPath* path = CreatePath();
 220     if ( radius == 0)
 221     {
 222         path->AddRectangle( x , y , w , h );
 223         DrawPath( path );
 224     }
 225     else
 226     {
 227         PushState();
 228         Translate( x , y );
 229
 230         double fw = w / radius;
 231         double fh = h / radius;
 232
 233         path->MoveToPoint(w, h / 2);
 234         path->AddArcToPoint(w, h, w / 2, h, radius);
 235         path->AddArcToPoint(0, h, 0, h / 2, radius);
 236         path->AddArcToPoint(0, 0, w / 2, 0, radius);
 237         path->AddArcToPoint(w, 0, w, h / 2, radius);
 238         path->CloseSubpath();
 239         DrawPath( path );
 240         PopState();
 241     }
 242     delete path;
 243 }
 244
 245 void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *points)
 246 {
 247     wxASSERT(n > 1);
 248     wxGraphicsPath* path = CreatePath();
 249     path->MoveToPoint(points[0].m_x, points[0].m_y) ;
 250     for ( int i = 1 ; i < n; ++i)
 251         path->AddLineToPoint( points[i].m_x, points[i].m_y );
 252     StrokePath( path );
 253     delete path;
 254 }
 255
 256 void wxGraphicsContext::DrawLines( size_t n, const wxPoint2DDouble *points, int fillStyle)
 257 {
 258     wxASSERT(n > 1);
 259     wxGraphicsPath* path = CreatePath();
 260     path->MoveToPoint(points[0].m_x, points[0].m_y) ;
 261     for ( int i = 1 ; i < n; ++i)
 262         path->AddLineToPoint( points[i].m_x, points[i].m_y );
 263     DrawPath( path , fillStyle);
 264     delete path;
 265 }
 266
 267 void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints)
 268 {
 269     wxASSERT(n > 0);
 270     wxGraphicsPath* path = CreatePath();
 271     for ( int i = 0 ; i < n; ++i)
 272     {
 273         path->MoveToPoint(beginPoints[i].m_x, beginPoints[i].m_y) ;
 274         path->AddLineToPoint( endPoints[i].m_x, endPoints[i].m_y );
 275     }
 276     StrokePath( path );
 277     delete path;
 278 }
 279
 280 IMPLEMENT_ABSTRACT_CLASS(wxGCDC, wxObject)
 281
 282 //-----------------------------------------------------------------------------
 283 // wxDC bridge class
 284 //-----------------------------------------------------------------------------
 285
 286 wxGCDC::wxGCDC()
 287 {
 288     Init();
 289 }
 290
 291
 292 wxGCDC::wxGCDC(const wxWindowDC& dc)
 293 {
 294     Init();
 295     m_graphicContext = wxGraphicsContext::Create(dc);
 296     m_ok = true;
 297     if ( dc.GetFont().Ok())
 298         m_graphicContext->SetFont(dc.GetFont());
 299 }
 300
 301 void wxGCDC::Init()
 302 {
 303     m_ok = false;
 304     m_colour = true;
 305     m_mm_to_pix_x = mm2pt;
 306     m_mm_to_pix_y = mm2pt;
 307
 308     m_pen = *wxBLACK_PEN;
 309     m_font = *wxNORMAL_FONT;
 310     m_brush = *wxWHITE_BRUSH;
 311
 312     m_graphicContext = NULL;
 313 }
 314
 315
 316 wxGCDC::~wxGCDC()
 317 {
 318     delete m_graphicContext;
 319 }
 320
 321 void wxGCDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask )
 322 {
 323     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawBitmap - invalid DC") );
 324     wxCHECK_RET( bmp.Ok(), wxT("wxGCDC(cg)::DoDrawBitmap - invalid bitmap") );
 325
 326     wxCoord xx = LogicalToDeviceX(x);
 327     wxCoord yy = LogicalToDeviceY(y);
 328     wxCoord w = bmp.GetWidth();
 329     wxCoord h = bmp.GetHeight();
 330     wxCoord ww = LogicalToDeviceXRel(w);
 331     wxCoord hh = LogicalToDeviceYRel(h);
 332
 333     m_graphicContext->DrawBitmap( bmp, xx , yy , ww , hh );
 334 }
 335
 336 void wxGCDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
 337 {
 338     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawIcon - invalid DC") );
 339     wxCHECK_RET( icon.Ok(), wxT("wxGCDC(cg)::DoDrawIcon - invalid icon") );
 340
 341     wxCoord xx = LogicalToDeviceX(x);
 342     wxCoord yy = LogicalToDeviceY(y);
 343     wxCoord w = icon.GetWidth();
 344     wxCoord h = icon.GetHeight();
 345     wxCoord ww = LogicalToDeviceXRel(w);
 346     wxCoord hh = LogicalToDeviceYRel(h);
 347
 348     m_graphicContext->DrawIcon( icon , xx, yy, ww, hh );
 349 }
 350
 351 void wxGCDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 352 {
 353     // TODO Clipping
 354 #if 0
 355     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoSetClippingRegion - invalid DC") );
 356
 357     wxCoord xx, yy, ww, hh;
 358     xx = LogicalToDeviceX(x);
 359     yy = LogicalToDeviceY(y);
 360     ww = LogicalToDeviceXRel(width);
 361     hh = LogicalToDeviceYRel(height);
 362
 363     CGContextRef cgContext = ((wxCairoContext*)(m_graphicContext))->GetNativeContext();
 364     CGRect clipRect = CGRectMake( xx , yy , ww, hh );
 365     CGContextClipToRect( cgContext , clipRect );
 366
 367     //    SetRectRgn( (RgnHandle) m_macCurrentClipRgn , xx , yy , xx + ww , yy + hh );
 368     //    SectRgn( (RgnHandle) m_macCurrentClipRgn , (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn );
 369
 370     if ( m_clipping )
 371     {
 372         m_clipX1 = wxMax( m_clipX1, xx );
 373         m_clipY1 = wxMax( m_clipY1, yy );
 374         m_clipX2 = wxMin( m_clipX2, (xx + ww) );
 375         m_clipY2 = wxMin( m_clipY2, (yy + hh) );
 376     }
 377     else
 378     {
 379         m_clipping = true;
 380
 381         m_clipX1 = xx;
 382         m_clipY1 = yy;
 383         m_clipX2 = xx + ww;
 384         m_clipY2 = yy + hh;
 385     }
 386
 387     // TODO: as soon as we don't reset the context for each operation anymore
 388     // we have to update the context as well
 389 #endif
 390
 391 }
 392
 393 void wxGCDC::DoSetClippingRegionAsRegion( const wxRegion &region )
 394 {
 395     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoSetClippingRegionAsRegion - invalid DC") );
 396
 397     if (region.Empty())
 398     {
 399         DestroyClippingRegion();
 400         return;
 401     }
 402
 403     wxCoord x, y, w, h;
 404     region.GetBox( x, y, w, h );
 405     wxCoord xx, yy, ww, hh;
 406     xx = LogicalToDeviceX(x);
 407     yy = LogicalToDeviceY(y);
 408     ww = LogicalToDeviceXRel(w);
 409     hh = LogicalToDeviceYRel(h);
 410
 411     // if we have a scaling that we cannot map onto native regions
 412     // we must use the box
 413     if ( ww != w || hh != h )
 414     {
 415         wxGCDC::DoSetClippingRegion( x, y, w, h );
 416     }
 417     else
 418     {
 419 #if 0
 420         CopyRgn( (RgnHandle) region.GetWXHRGN() , (RgnHandle) m_macCurrentClipRgn );
 421         if ( xx != x || yy != y )
 422             OffsetRgn( (RgnHandle) m_macCurrentClipRgn , xx - x , yy - y );
 423         SectRgn( (RgnHandle)m_macCurrentClipRgn , (RgnHandle)m_macBoundaryClipRgn , (RgnHandle)m_macCurrentClipRgn );
 424 #endif
 425
 426         if ( m_clipping )
 427         {
 428             m_clipX1 = wxMax( m_clipX1, xx );
 429             m_clipY1 = wxMax( m_clipY1, yy );
 430             m_clipX2 = wxMin( m_clipX2, (xx + ww) );
 431             m_clipY2 = wxMin( m_clipY2, (yy + hh) );
 432         }
 433         else
 434         {
 435             m_clipping = true;
 436
 437             m_clipX1 = xx;
 438             m_clipY1 = yy;
 439             m_clipX2 = xx + ww;
 440             m_clipY2 = yy + hh;
 441         }
 442     }
 443 }
 444
 445 void wxGCDC::DestroyClippingRegion()
 446 {
 447     // TODO Clipping
 448 #if 0
 449     //    CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn );
 450
 451     CGContextRef cgContext = ((wxCairoContext*)(m_graphicContext))->GetNativeContext();
 452     CGContextRestoreGState( cgContext );
 453     CGContextSaveGState( cgContext );
 454
 455     m_graphicContext->SetPen( m_pen );
 456     m_graphicContext->SetBrush( m_brush );
 457
 458     m_clipping = false;
 459 #endif
 460
 461 }
 462
 463 void wxGCDC::DoGetSizeMM( int* width, int* height ) const
 464 {
 465     int w = 0, h = 0;
 466
 467     GetSize( &w, &h );
 468     if (width)
 469         *width = long( double(w) / (m_scaleX * m_mm_to_pix_x) );
 470     if (height)
 471         *height = long( double(h) / (m_scaleY * m_mm_to_pix_y) );
 472 }
 473
 474 void wxGCDC::SetTextForeground( const wxColour &col )
 475 {
 476     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::SetTextForeground - invalid DC") );
 477
 478     if ( col != m_textForegroundColour )
 479     {
 480         m_textForegroundColour = col;
 481         m_graphicContext->SetTextColor( col );
 482     }
 483 }
 484
 485 void wxGCDC::SetTextBackground( const wxColour &col )
 486 {
 487     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::SetTextBackground - invalid DC") );
 488
 489     m_textBackgroundColour = col;
 490 }
 491
 492 void wxGCDC::SetMapMode( int mode )
 493 {
 494     switch (mode)
 495     {
 496     case wxMM_TWIPS:
 497         SetLogicalScale( twips2mm * m_mm_to_pix_x, twips2mm * m_mm_to_pix_y );
 498         break;
 499
 500     case wxMM_POINTS:
 501         SetLogicalScale( pt2mm * m_mm_to_pix_x, pt2mm * m_mm_to_pix_y );
 502         break;
 503
 504     case wxMM_METRIC:
 505         SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
 506         break;
 507
 508     case wxMM_LOMETRIC:
 509         SetLogicalScale( m_mm_to_pix_x / 10.0, m_mm_to_pix_y / 10.0 );
 510         break;
 511
 512     case wxMM_TEXT:
 513     default:
 514         SetLogicalScale( 1.0, 1.0 );
 515         break;
 516     }
 517
 518     ComputeScaleAndOrigin();
 519 }
 520
 521 void wxGCDC::SetUserScale( double x, double y )
 522 {
 523     // allow negative ? -> no
 524     m_userScaleX = x;
 525     m_userScaleY = y;
 526     ComputeScaleAndOrigin();
 527 }
 528
 529 void wxGCDC::SetLogicalScale( double x, double y )
 530 {
 531     // allow negative ?
 532     m_logicalScaleX = x;
 533     m_logicalScaleY = y;
 534     ComputeScaleAndOrigin();
 535 }
 536
 537 void wxGCDC::SetLogicalOrigin( wxCoord x, wxCoord y )
 538 {
 539     m_logicalOriginX = x * m_signX;   // is this still correct ?
 540     m_logicalOriginY = y * m_signY;
 541     ComputeScaleAndOrigin();
 542 }
 543
 544 void wxGCDC::SetDeviceOrigin( wxCoord x, wxCoord y )
 545 {
 546     m_deviceOriginX = x;
 547     m_deviceOriginY = y;
 548     ComputeScaleAndOrigin();
 549 }
 550
 551 void wxGCDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
 552 {
 553     m_signX = (xLeftRight ?  1 : -1);
 554     m_signY = (yBottomUp ? -1 :  1);
 555     ComputeScaleAndOrigin();
 556 }
 557
 558 wxSize wxGCDC::GetPPI() const
 559 {
 560     return wxSize(72, 72);
 561 }
 562
 563 int wxGCDC::GetDepth() const
 564 {
 565     return 32;
 566 }
 567
 568 void wxGCDC::ComputeScaleAndOrigin()
 569 {
 570     // this is a bit artificial, but we need to force wxGCDC to think
 571     // the pen has changed
 572     wxPen pen( GetPen() );
 573
 574     m_pen = wxNullPen;
 575     SetPen( pen );
 576 }
 577
 578 void wxGCDC::SetPalette( const wxPalette& palette )
 579 {}
 580
 581 void wxGCDC::SetBackgroundMode( int mode )
 582 {
 583     m_backgroundMode = mode;
 584 }
 585
 586 void wxGCDC::SetFont( const wxFont &font )
 587 {
 588     m_font = font;
 589     if ( m_graphicContext )
 590         m_graphicContext->SetFont( font );
 591 }
 592
 593 void wxGCDC::SetPen( const wxPen &pen )
 594 {
 595     if ( m_pen == pen )
 596         return;
 597
 598     m_pen = pen;
 599     if ( m_graphicContext )
 600     {
 601         if ( m_pen.GetStyle() == wxSOLID || m_pen.GetStyle() == wxTRANSPARENT )
 602         {
 603             m_graphicContext->SetPen( m_pen );
 604         }
 605         else
 606         {
 607             // we have to compensate for moved device origins etc. otherwise patterned pens are standing still
 608             // eg when using a wxScrollWindow and scrolling around
 609             int origX = LogicalToDeviceX( 0 );
 610             int origY = LogicalToDeviceY( 0 );
 611             m_graphicContext->Translate( origX , origY );
 612             m_graphicContext->SetPen( m_pen );
 613             m_graphicContext->Translate( -origX , -origY );
 614         }
 615     }
 616 }
 617
 618 void wxGCDC::SetBrush( const wxBrush &brush )
 619 {
 620     if (m_brush == brush)
 621         return;
 622
 623     m_brush = brush;
 624     if ( m_graphicContext )
 625     {
 626         if ( brush.GetStyle() == wxSOLID || brush.GetStyle() == wxTRANSPARENT )
 627         {
 628             m_graphicContext->SetBrush( m_brush );
 629         }
 630         else
 631         {
 632             // we have to compensate for moved device origins etc. otherwise patterned brushes are standing still
 633             // eg when using a wxScrollWindow and scrolling around
 634             // TODO on MSW / GDIPlus this still occurs with hatched brushes
 635             int origX = LogicalToDeviceX(0);
 636             int origY = LogicalToDeviceY(0);
 637             m_graphicContext->Translate( origX , origY );
 638             m_graphicContext->SetBrush( m_brush );
 639             m_graphicContext->Translate( -origX , -origY );
 640         }
 641     }
 642 }
 643
 644 void wxGCDC::SetBackground( const wxBrush &brush )
 645 {
 646     if (m_backgroundBrush == brush)
 647         return;
 648
 649     m_backgroundBrush = brush;
 650     if (!m_backgroundBrush.Ok())
 651         return;
 652 }
 653
 654 void wxGCDC::SetLogicalFunction( int function )
 655 {
 656     if (m_logicalFunction == function)
 657         return;
 658
 659     m_logicalFunction = function;
 660 #if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
 661
 662     CGContextRef cgContext = ((wxCairoContext*)(m_graphicContext))->GetNativeContext();
 663     if ( m_logicalFunction == wxCOPY )
 664         CGContextSetBlendMode( cgContext, kCGBlendModeNormal );
 665     else if ( m_logicalFunction == wxINVERT )
 666         CGContextSetBlendMode( cgContext, kCGBlendModeExclusion );
 667     else
 668         CGContextSetBlendMode( cgContext, kCGBlendModeNormal );
 669 #endif
 670
 671 }
 672
 673 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
 674                               const wxColour & col, int style);
 675
 676 bool wxGCDC::DoFloodFill(wxCoord x, wxCoord y,
 677                          const wxColour& col, int style)
 678 {
 679     //    return wxDoFloodFill(this, x, y, col, style);
 680     return false;
 681 }
 682
 683 bool wxGCDC::DoGetPixel( wxCoord x, wxCoord y, wxColour *col ) const
 684 {
 685     //  wxCHECK_MSG( 0 , false, wxT("wxGCDC(cg)::DoGetPixel - not implemented") );
 686     return false;
 687 }
 688
 689 void wxGCDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
 690 {
 691     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLine - invalid DC") );
 692
 693 #if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
 694
 695     if ( m_logicalFunction != wxCOPY )
 696         return;
 697 #endif
 698
 699     wxCoord xx1 = LogicalToDeviceX(x1);
 700     wxCoord yy1 = LogicalToDeviceY(y1);
 701     wxCoord xx2 = LogicalToDeviceX(x2);
 702     wxCoord yy2 = LogicalToDeviceY(y2);
 703
 704     m_graphicContext->StrokeLine(xx1,yy1,xx2,yy2);
 705
 706     CalcBoundingBox(x1, y1);
 707     CalcBoundingBox(x2, y2);
 708 }
 709
 710 void wxGCDC::DoCrossHair( wxCoord x, wxCoord y )
 711 {
 712     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoCrossHair - invalid DC") );
 713
 714     if ( m_logicalFunction != wxCOPY )
 715         return;
 716
 717     int w = 0, h = 0;
 718
 719     GetSize( &w, &h );
 720
 721     wxCoord xx = LogicalToDeviceX(x);
 722     wxCoord yy = LogicalToDeviceY(y);
 723     wxCoord xw = LogicalToDeviceX(w);
 724     wxCoord x0 = LogicalToDeviceX(0);
 725     wxCoord y0 = LogicalToDeviceY(0);
 726     wxCoord yh = LogicalToDeviceY(h);
 727
 728     m_graphicContext->StrokeLine(x0,yy,xw,yy);
 729     m_graphicContext->StrokeLine(xx,y0,xx,yh);
 730
 731     CalcBoundingBox(x0, y0);
 732     CalcBoundingBox(x0+xw, y0+yh);
 733 }
 734
 735 void wxGCDC::DoDrawArc( wxCoord x1, wxCoord y1,
 736                         wxCoord x2, wxCoord y2,
 737                         wxCoord xc, wxCoord yc )
 738 {
 739     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawArc - invalid DC") );
 740
 741     if ( m_logicalFunction != wxCOPY )
 742         return;
 743
 744     wxCoord xx1 = LogicalToDeviceX(x1);
 745     wxCoord yy1 = LogicalToDeviceY(y1);
 746     wxCoord xx2 = LogicalToDeviceX(x2);
 747     wxCoord yy2 = LogicalToDeviceY(y2);
 748     wxCoord xxc = LogicalToDeviceX(xc);
 749     wxCoord yyc = LogicalToDeviceY(yc);
 750
 751     double dx = xx1 - xxc;
 752     double dy = yy1 - yyc;
 753     double radius = sqrt((double)(dx * dx + dy * dy));
 754     wxCoord rad = (wxCoord)radius;
 755     double sa, ea;
 756     if (xx1 == xx2 && yy1 == yy2)
 757     {
 758         sa = 0.0;
 759         ea = 360.0;
 760     }
 761     else if (radius == 0.0)
 762     {
 763         sa = ea = 0.0;
 764     }
 765     else
 766     {
 767         sa = (xx1 - xxc == 0) ?
 768      (yy1 - yyc < 0) ? 90.0 : -90.0 :
 769              -atan2(double(yy1 - yyc), double(xx1 - xxc)) * RAD2DEG;
 770         ea = (xx2 - xxc == 0) ?
 771      (yy2 - yyc < 0) ? 90.0 : -90.0 :
 772              -atan2(double(yy2 - yyc), double(xx2 - xxc)) * RAD2DEG;
 773     }
 774
 775     bool fill = m_brush.GetStyle() != wxTRANSPARENT;
 776
 777     wxGraphicsPath* path = m_graphicContext->CreatePath();
 778     if ( fill && ((x1!=x2)||(y1!=y2)) )
 779         path->MoveToPoint( xxc, yyc );
 780     path->AddArc( xxc, yyc , rad , DegToRad(sa) , DegToRad(ea), false );
 781     if ( fill && ((x1!=x2)||(y1!=y2)) )
 782         path->AddLineToPoint( xxc, yyc );
 783     m_graphicContext->DrawPath(path);
 784     delete path;
 785 }
 786
 787 void wxGCDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 788                                 double sa, double ea )
 789 {
 790     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipticArc - invalid DC") );
 791
 792     if ( m_logicalFunction != wxCOPY )
 793         return;
 794
 795     wxCoord xx = LogicalToDeviceX(x);
 796     wxCoord yy = LogicalToDeviceY(y);
 797     wxCoord ww = m_signX * LogicalToDeviceXRel(w);
 798     wxCoord hh = m_signY * LogicalToDeviceYRel(h);
 799
 800     // handle -ve width and/or height
 801     if (ww < 0)
 802     {
 803         ww = -ww;
 804         xx = xx - ww;
 805     }
 806     if (hh < 0)
 807     {
 808         hh = -hh;
 809         yy = yy - hh;
 810     }
 811
 812     bool fill = m_brush.GetStyle() != wxTRANSPARENT;
 813
 814     wxGraphicsPath* path = m_graphicContext->CreatePath();
 815     m_graphicContext->PushState();
 816     m_graphicContext->Translate(xx+ww/2,yy+hh/2);
 817     wxDouble factor = ((wxDouble) ww) / hh ;
 818     m_graphicContext->Scale( factor , 1.0) ;
 819     if ( fill && (sa!=ea) )
 820         path->MoveToPoint(0,0);
 821     // since these angles (ea,sa) are measured counter-clockwise, we invert them to
 822     // get clockwise angles
 823     path->AddArc( 0, 0, hh/2 , DegToRad(-sa) , DegToRad(-ea), sa > ea );
 824     if ( fill && (sa!=ea) )
 825         path->AddLineToPoint(0,0);
 826     m_graphicContext->DrawPath( path );
 827     m_graphicContext->PopState();
 828     delete path;
 829 }
 830
 831 void wxGCDC::DoDrawPoint( wxCoord x, wxCoord y )
 832 {
 833     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawPoint - invalid DC") );
 834
 835     DoDrawLine( x , y , x + 1 , y + 1 );
 836 }
 837
 838 void wxGCDC::DoDrawLines(int n, wxPoint points[],
 839                          wxCoord xoffset, wxCoord yoffset)
 840 {
 841     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLines - invalid DC") );
 842
 843 #if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
 844
 845     if ( m_logicalFunction != wxCOPY )
 846         return;
 847 #endif
 848
 849     wxPoint2DDouble* pointsD = new wxPoint2DDouble[n] ;
 850     for( int i = 0 ; i < n; ++i)
 851     {
 852         pointsD[i].m_x = LogicalToDeviceX(points[i].x + xoffset);
 853         pointsD[i].m_y = LogicalToDeviceY(points[i].y + yoffset);
 854     }
 855
 856     m_graphicContext->StrokeLines( n , pointsD) ;
 857     delete[] pointsD;
 858 }
 859
 860 #if wxUSE_SPLINES
 861 void wxGCDC::DoDrawSpline(wxList *points)
 862 {
 863     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawSpline - invalid DC") );
 864
 865     if ( m_logicalFunction != wxCOPY )
 866         return;
 867
 868     wxGraphicsPath* path = m_graphicContext->CreatePath();
 869
 870     wxList::compatibility_iterator node = points->GetFirst();
 871     if (node == wxList::compatibility_iterator())
 872         // empty list
 873         return;
 874
 875     wxPoint *p = (wxPoint *)node->GetData();
 876
 877     wxCoord x1 = p->x;
 878     wxCoord y1 = p->y;
 879
 880     node = node->GetNext();
 881     p = (wxPoint *)node->GetData();
 882
 883     wxCoord x2 = p->x;
 884     wxCoord y2 = p->y;
 885     wxCoord cx1 = ( x1 + x2 ) / 2;
 886     wxCoord cy1 = ( y1 + y2 ) / 2;
 887
 888     path->MoveToPoint( LogicalToDeviceX( x1 ) , LogicalToDeviceY( y1 ) );
 889     path->AddLineToPoint( LogicalToDeviceX( cx1 ) , LogicalToDeviceY( cy1 ) );
 890 #if !wxUSE_STL
 891
 892     while ((node = node->GetNext()) != NULL)
 893 #else
 894
 895     while ((node = node->GetNext()))
 896 #endif // !wxUSE_STL
 897
 898     {
 899         p = (wxPoint *)node->GetData();
 900         x1 = x2;
 901         y1 = y2;
 902         x2 = p->x;
 903         y2 = p->y;
 904         wxCoord cx4 = (x1 + x2) / 2;
 905         wxCoord cy4 = (y1 + y2) / 2;
 906
 907         path->AddQuadCurveToPoint(
 908             LogicalToDeviceX( x1 ) , LogicalToDeviceY( y1 ) ,
 909             LogicalToDeviceX( cx4 ) , LogicalToDeviceY( cy4 ) );
 910
 911         cx1 = cx4;
 912         cy1 = cy4;
 913     }
 914
 915     path->AddLineToPoint( LogicalToDeviceX( x2 ) , LogicalToDeviceY( y2 ) );
 916
 917     m_graphicContext->StrokePath( path );
 918     delete path;
 919 }
 920 #endif
 921
 922 void wxGCDC::DoDrawPolygon( int n, wxPoint points[],
 923                             wxCoord xoffset, wxCoord yoffset,
 924                             int fillStyle )
 925 {
 926     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawPolygon - invalid DC") );
 927
 928     if ( n <= 0 || (m_brush.GetStyle() == wxTRANSPARENT && m_pen.GetStyle() == wxTRANSPARENT ) )
 929         return;
 930     if ( m_logicalFunction != wxCOPY )
 931         return;
 932
 933     bool closeIt = false ;
 934     if (points[n-1] != points[0])
 935         closeIt = true ;
 936
 937     wxPoint2DDouble* pointsD = new wxPoint2DDouble[n+(closeIt?1:0)] ;
 938     for( int i = 0 ; i < n; ++i)
 939     {
 940         pointsD[i].m_x = LogicalToDeviceX(points[i].x + xoffset);
 941         pointsD[i].m_y = LogicalToDeviceY(points[i].y + yoffset);
 942     }
 943     if ( closeIt )
 944         pointsD[n] = pointsD[0];
 945
 946     m_graphicContext->DrawLines( n+(closeIt?1:0) , pointsD, fillStyle) ;
 947     delete[] pointsD;
 948 }
 949
 950 void wxGCDC::DoDrawPolyPolygon(int n,
 951                                int count[],
 952                                wxPoint points[],
 953                                wxCoord xoffset,
 954                                wxCoord yoffset,
 955                                int fillStyle)
 956 {
 957     wxASSERT(n > 1);
 958     wxGraphicsPath* path = m_graphicContext->CreatePath();
 959
 960     int i = 0 ;
 961     for ( int j = 0 ; j < n ; ++j)
 962     {
 963         wxPoint start = points[i];
 964         path->MoveToPoint(LogicalToDeviceX(start.x+ xoffset), LogicalToDeviceY(start.y+ yoffset)) ;
 965         ++i;
 966         int l = count[j];
 967         for ( int k = 1 ; k < l ; ++k)
 968         {
 969             path->AddLineToPoint( LogicalToDeviceX(points[i].x+ xoffset), LogicalToDeviceY(points[i].y+ yoffset));
 970             ++i ;
 971         }
 972         // close the polygon
 973         if ( start != points[i-1])
 974             path->AddLineToPoint( LogicalToDeviceX(start.x+ xoffset), LogicalToDeviceY(start.y+ yoffset));
 975     }
 976     m_graphicContext->DrawPath( path , fillStyle);
 977     delete path;
 978 }
 979
 980 void wxGCDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 981 {
 982     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRectangle - invalid DC") );
 983
 984     if ( m_logicalFunction != wxCOPY )
 985         return;
 986
 987     wxCoord xx = LogicalToDeviceX(x);
 988     wxCoord yy = LogicalToDeviceY(y);
 989     wxCoord ww = m_signX * LogicalToDeviceXRel(width);
 990     wxCoord hh = m_signY * LogicalToDeviceYRel(height);
 991
 992     // CMB: draw nothing if transformed w or h is 0
 993     if (ww == 0 || hh == 0)
 994         return;
 995
 996     // CMB: handle -ve width and/or height
 997     if (ww < 0)
 998     {
 999         ww = -ww;
1000         xx = xx - ww;
1001     }
1002     if (hh < 0)
1003     {
1004         hh = -hh;
1005         yy = yy - hh;
1006     }
1007     m_graphicContext->DrawRectangle( xx,yy,ww,hh);
1008 }
1009
1010 void wxGCDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y,
1011                                     wxCoord width, wxCoord height,
1012                                     double radius)
1013 {
1014     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRoundedRectangle - invalid DC") );
1015
1016     if ( m_logicalFunction != wxCOPY )
1017         return;
1018
1019     if (radius < 0.0)
1020         radius = - radius * ((width < height) ? width : height);
1021     wxCoord xx = LogicalToDeviceX(x);
1022     wxCoord yy = LogicalToDeviceY(y);
1023     wxCoord ww = m_signX * LogicalToDeviceXRel(width);
1024     wxCoord hh = m_signY * LogicalToDeviceYRel(height);
1025
1026     // CMB: draw nothing if transformed w or h is 0
1027     if (ww == 0 || hh == 0)
1028         return;
1029
1030     // CMB: handle -ve width and/or height
1031     if (ww < 0)
1032     {
1033         ww = -ww;
1034         xx = xx - ww;
1035     }
1036     if (hh < 0)
1037     {
1038         hh = -hh;
1039         yy = yy - hh;
1040     }
1041
1042     m_graphicContext->DrawRoundedRectangle( xx,yy,ww,hh,radius);
1043 }
1044
1045 void wxGCDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
1046 {
1047     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipse - invalid DC") );
1048
1049     if ( m_logicalFunction != wxCOPY )
1050         return;
1051
1052     wxCoord xx = LogicalToDeviceX(x);
1053     wxCoord yy = LogicalToDeviceY(y);
1054     wxDouble ww = m_signX * LogicalToDeviceXRel(width);
1055     wxCoord hh = m_signY * LogicalToDeviceYRel(height);
1056
1057     // CMB: draw nothing if transformed w or h is 0
1058     if (ww == 0 || hh == 0)
1059         return;
1060
1061     // CMB: handle -ve width and/or height
1062     if (ww < 0)
1063     {
1064         ww = -ww;
1065         xx = xx - ww;
1066     }
1067     if (hh < 0)
1068     {
1069         hh = -hh;
1070         yy = yy - hh;
1071     }
1072
1073     m_graphicContext->DrawEllipse(xx,yy,ww,hh);
1074 }
1075
1076 bool wxGCDC::CanDrawBitmap() const
1077 {
1078     return true;
1079 }
1080
1081 bool wxGCDC::DoBlit(
1082     wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
1083     wxDC *source, wxCoord xsrc, wxCoord ysrc, int logical_func , bool useMask,
1084     wxCoord xsrcMask, wxCoord ysrcMask )
1085 {
1086     wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::DoBlit - invalid DC") );
1087     wxCHECK_MSG( source->Ok(), false, wxT("wxGCDC(cg)::DoBlit - invalid source DC") );
1088
1089     if ( logical_func == wxNO_OP )
1090         return true;
1091
1092     if (xsrcMask == -1 && ysrcMask == -1)
1093     {
1094         xsrcMask = xsrc;
1095         ysrcMask = ysrc;
1096     }
1097
1098     wxCoord yysrc = source-> LogicalToDeviceY(ysrc);
1099     wxCoord xxsrc = source-> LogicalToDeviceX(xsrc);
1100     wxCoord wwsrc = source-> LogicalToDeviceXRel(width);
1101     wxCoord hhsrc = source-> LogicalToDeviceYRel(height);
1102
1103     wxCoord yydest = LogicalToDeviceY(ydest);
1104     wxCoord xxdest = LogicalToDeviceX(xdest);
1105     wxCoord wwdest = LogicalToDeviceXRel(width);
1106     wxCoord hhdest = LogicalToDeviceYRel(height);
1107
1108     wxMemoryDC* memdc = dynamic_cast<wxMemoryDC*>(source);
1109     if ( memdc && logical_func == wxCOPY )
1110     {
1111 #if 0
1112         wxBitmap blit = memdc->GetSelectedObject();
1113
1114         wxASSERT_MSG( blit.Ok() , wxT("Invalid bitmap for blitting") );
1115
1116         wxCoord bmpwidth = blit.GetWidth();
1117         wxCoord bmpheight = blit.GetHeight();
1118
1119         if ( xxsrc != 0 || yysrc != 0 || bmpwidth != wwsrc || bmpheight != hhsrc )
1120         {
1121             wwsrc = wxMin( wwsrc , bmpwidth - xxsrc );
1122             hhsrc = wxMin( hhsrc , bmpheight - yysrc );
1123             if ( wwsrc > 0 && hhsrc > 0 )
1124             {
1125                 if ( xxsrc >= 0 && yysrc >= 0 )
1126                 {
1127                     wxRect subrect( xxsrc, yysrc, wwsrc , hhsrc );
1128                     // TODO we perhaps could add a DrawSubBitmap call to dc for performance reasons
1129                     blit = blit.GetSubBitmap( subrect );
1130                 }
1131                 else
1132                 {
1133                     // in this case we'd probably have to adjust the different coordinates, but
1134                     // we have to find out proper contract first
1135                     blit = wxNullBitmap;
1136                 }
1137             }
1138             else
1139             {
1140                 blit = wxNullBitmap;
1141             }
1142         }
1143
1144         if ( blit.Ok() )
1145         {
1146             m_graphicContext->DrawBitmap( blit, xxdest , yydest , wwdest , hhdest );
1147         }
1148 #endif
1149
1150     }
1151     else
1152     {
1153         wxFAIL_MSG( wxT("Blitting is only supported from bitmap contexts") );
1154         return false;
1155     }
1156
1157     return true;
1158 }
1159
1160 void wxGCDC::DoDrawRotatedText(const wxString& str, wxCoord x, wxCoord y,
1161                                double angle)
1162 {
1163     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRotatedText - invalid DC") );
1164
1165     if ( str.length() == 0 )
1166         return;
1167     if ( m_logicalFunction != wxCOPY )
1168         return;
1169
1170     int drawX = LogicalToDeviceX(x);
1171     int drawY = LogicalToDeviceY(y);
1172
1173     m_graphicContext->DrawText( str, drawX ,drawY , DegToRad(angle ));
1174 }
1175
1176 void wxGCDC::DoDrawText(const wxString& str, wxCoord x, wxCoord y)
1177 {
1178     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRotatedText - invalid DC") );
1179
1180     if ( str.length() == 0 )
1181         return;
1182     if ( m_logicalFunction != wxCOPY )
1183         return;
1184
1185     int drawX = LogicalToDeviceX(x);
1186     int drawY = LogicalToDeviceY(y);
1187
1188     m_graphicContext->DrawText( str, drawX ,drawY);
1189 }
1190
1191 bool wxGCDC::CanGetTextExtent() const
1192 {
1193     wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::CanGetTextExtent - invalid DC") );
1194
1195     return true;
1196 }
1197
1198 void wxGCDC::DoGetTextExtent( const wxString &str, wxCoord *width, wxCoord *height,
1199                               wxCoord *descent, wxCoord *externalLeading ,
1200                               wxFont *theFont ) const
1201 {
1202     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoGetTextExtent - invalid DC") );
1203
1204     wxFont formerFont = m_font;
1205     if ( theFont )
1206     {
1207         m_graphicContext->SetFont( *theFont );
1208     }
1209
1210     wxDouble h , d , e , w;
1211
1212     m_graphicContext->GetTextExtent( str, &w, &h, &d, &e );
1213
1214     if ( height )
1215         *height = DeviceToLogicalYRel( h );
1216     if ( descent )
1217         *descent =DeviceToLogicalYRel( d);
1218     if ( externalLeading )
1219         *externalLeading = DeviceToLogicalYRel( e);
1220     if ( width )
1221         *width = DeviceToLogicalXRel( w );
1222
1223     if ( theFont )
1224     {
1225         m_graphicContext->SetFont( m_font );
1226     }
1227 }
1228
1229 bool wxGCDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
1230 {
1231     wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::DoGetPartialTextExtents - invalid DC") );
1232     widths.Clear();
1233     widths.Add(0,text.Length());
1234     if ( text.IsEmpty() )
1235         return true ;
1236
1237     wxArrayDouble widthsD ;
1238
1239     m_graphicContext->GetPartialTextExtents( text, widthsD );
1240     for ( size_t i = 0; i < widths.GetCount(); ++i )
1241         widths[i] = DeviceToLogicalXRel( widthsD[i] + 0.5 ) ;
1242
1243     return true;
1244 }
1245
1246 wxCoord wxGCDC::GetCharWidth(void) const
1247 {
1248     wxCoord width;
1249     DoGetTextExtent( wxT("g") , &width , NULL , NULL , NULL , NULL );
1250
1251     return width;
1252 }
1253
1254 wxCoord wxGCDC::GetCharHeight(void) const
1255 {
1256     wxCoord height;
1257     DoGetTextExtent( wxT("g") , NULL , &height , NULL , NULL , NULL );
1258
1259     return height;
1260 }
1261
1262 void wxGCDC::Clear(void)
1263 {
1264     wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::Clear - invalid DC") );
1265     // TODO
1266 }
1267
1268 void wxGCDC::DoGetSize(int *width, int *height) const
1269 {
1270     *width = 1000;
1271     *height = 1000;
1272 }
1273
1274 void wxGCDC::DoGradientFillLinear(const wxRect& rect,
1275                                   const wxColour& initialColour,
1276                                   const wxColour& destColour,
1277                                   wxDirection nDirection )
1278 {
1279     wxPoint start ;
1280     wxPoint end ;
1281     switch( nDirection)
1282     {
1283     case wxWEST :
1284         start = rect.GetRightBottom();
1285         start.x++;
1286         end = rect.GetLeftBottom();
1287         break ;
1288     case wxEAST :
1289         start = rect.GetLeftBottom();
1290         end = rect.GetRightBottom();
1291         end.x++;
1292         break ;
1293     case wxNORTH :
1294         start = rect.GetLeftBottom();
1295         start.y++;
1296         end = rect.GetLeftTop();
1297         break ;
1298     case wxSOUTH :
1299         start = rect.GetLeftTop();
1300         end = rect.GetLeftBottom();
1301         end.y++;
1302         break ;
1303     }
1304
1305     m_graphicContext->SetLinearGradientBrush(
1306         LogicalToDeviceX(start.x),LogicalToDeviceY(start.y),
1307         LogicalToDeviceX(end.x),LogicalToDeviceY(end.y), initialColour, destColour);
1308
1309     wxCoord xx = LogicalToDeviceX(rect.x);
1310     wxCoord yy = LogicalToDeviceY(rect.y);
1311     wxDouble ww = m_signX * LogicalToDeviceXRel(rect.width);
1312     wxCoord hh = m_signY * LogicalToDeviceYRel(rect.height);
1313
1314     if (ww == 0 || hh == 0)
1315         return;
1316
1317     if (ww < 0)
1318     {
1319         ww = -ww;
1320         xx = xx - ww;
1321     }
1322     if (hh < 0)
1323     {
1324         hh = -hh;
1325         yy = yy - hh;
1326     }
1327
1328     m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
1329     m_graphicContext->DrawRectangle(xx,yy,ww,hh);
1330     m_graphicContext->SetPen(m_pen);
1331 }
1332
1333 void wxGCDC::DoGradientFillConcentric(const wxRect& rect,
1334                                       const wxColour& initialColour,
1335                                       const wxColour& destColour,
1336                                       const wxPoint& circleCenter)
1337 {
1338     //Radius
1339     wxInt32 cx = rect.GetWidth() / 2;
1340     wxInt32 cy = rect.GetHeight() / 2;
1341     wxInt32 nRadius;
1342     if (cx < cy)
1343         nRadius = cx;
1344     else
1345         nRadius = cy;
1346
1347     wxCoord xx = LogicalToDeviceX(rect.x);
1348     wxCoord yy = LogicalToDeviceY(rect.y);
1349     wxDouble ww = m_signX * LogicalToDeviceXRel(rect.width);
1350     wxCoord hh = m_signY * LogicalToDeviceYRel(rect.height);
1351
1352     if (ww == 0 || hh == 0)
1353         return;
1354
1355     if (ww < 0)
1356     {
1357         ww = -ww;
1358         xx = xx - ww;
1359     }
1360     if (hh < 0)
1361     {
1362         hh = -hh;
1363         yy = yy - hh;
1364     }
1365
1366     m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
1367     m_graphicContext->SetBrush( wxBrush( destColour) ) ;
1368     m_graphicContext->DrawRectangle( xx,yy,ww,hh);
1369
1370     m_graphicContext->SetRadialGradientBrush(
1371         xx+LogicalToDeviceX(circleCenter.x),yy+LogicalToDeviceY(circleCenter.y),
1372         xx+LogicalToDeviceX(circleCenter.x),yy+LogicalToDeviceY(circleCenter.y),
1373         LogicalToDeviceXRel(nRadius),
1374         initialColour,destColour);
1375
1376     m_graphicContext->DrawRectangle( xx,yy,ww,hh);
1377     m_graphicContext->SetPen(m_pen);
1378 }
1379
1380 void wxGCDC::DoDrawCheckMark(wxCoord x, wxCoord y,
1381                              wxCoord width, wxCoord height)
1382 {
1383     wxDCBase::DoDrawCheckMark(x,y,width,height);
1384 }
1385
1386 #endif
1387