src/generic/graphicc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/graphicc.cpp
   3 // Purpose:     cairo device context class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     2006-10-03
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2006 Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/dc.h"
  15
  16 #ifdef __BORLANDC__
  17 #pragma hdrstop
  18 #endif
  19
  20 #ifndef WX_PRECOMP
  21 #include "wx/image.h"
  22 #include "wx/window.h"
  23 #include "wx/dc.h"
  24 #include "wx/utils.h"
  25 #include "wx/dialog.h"
  26 #include "wx/app.h"
  27 #include "wx/bitmap.h"
  28 #include "wx/dcmemory.h"
  29 #include "wx/log.h"
  30 #include "wx/icon.h"
  31 #include "wx/dcprint.h"
  32 #include "wx/module.h"
  33 #endif
  34
  35 #ifdef __WXGTK__
  36 #include "wx/gtk/win_gtk.h"
  37 #endif
  38
  39 #include "wx/graphics.h"
  40
  41 #if wxUSE_GRAPHICS_CONTEXT
  42
  43 #include <vector>
  44
  45 using namespace std;
  46
  47 //-----------------------------------------------------------------------------
  48 // constants
  49 //-----------------------------------------------------------------------------
  50
  51 const double RAD2DEG = 180.0 / M_PI;
  52
  53 //-----------------------------------------------------------------------------
  54 // Local functions
  55 //-----------------------------------------------------------------------------
  56
  57 static inline double dmin(double a, double b)
  58 {
  59     return a < b ? a : b;
  60 }
  61 static inline double dmax(double a, double b)
  62 {
  63     return a > b ? a : b;
  64 }
  65
  66 static inline double DegToRad(double deg)
  67 {
  68     return (deg * M_PI) / 180.0;
  69 }
  70 static inline double RadToDeg(double deg)
  71 {
  72     return (deg * 180.0) / M_PI;
  73 }
  74
  75 //-----------------------------------------------------------------------------
  76 // device context implementation
  77 //
  78 // more and more of the dc functionality should be implemented by calling
  79 // the appropricate wxCairoContext, but we will have to do that step by step
  80 // also coordinate conversions should be moved to native matrix ops
  81 //-----------------------------------------------------------------------------
  82
  83 // we always stock two context states, one at entry, to be able to preserve the
  84 // state we were called with, the other one after changing to HI Graphics orientation
  85 // (this one is used for getting back clippings etc)
  86
  87 //-----------------------------------------------------------------------------
  88 // wxGraphicsPath implementation
  89 //-----------------------------------------------------------------------------
  90
  91 // TODO remove this dependency (gdiplus needs the macros)
  92
  93 #ifndef max
  94 #define max(a,b)            (((a) > (b)) ? (a) : (b))
  95 #endif
  96
  97 #ifndef min
  98 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  99 #endif
 100
 101 #include <cairo.h>
 102 #ifdef __WXGTK__
 103 #include <gtk/gtk.h>
 104 #endif
 105
 106 class WXDLLIMPEXP_CORE wxCairoPath : public wxGraphicsPath
 107 {
 108 public :
 109     wxCairoPath();
 110     wxCairoPath(wxGraphicsRenderer* renderer, cairo_t* pathcontext = NULL);
 111     ~wxCairoPath();
 112
 113     virtual wxGraphicsPath *Clone() const;
 114
 115     //
 116     // These are the path primitives from which everything else can be constructed
 117     //
 118
 119     // begins a new subpath at (x,y)
 120     virtual void MoveToPoint( wxDouble x, wxDouble y );
 121
 122     // adds a straight line from the current point to (x,y)
 123     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 124
 125     // adds a cubic Bezier curve from the current point, using two control points and an end point
 126     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 127
 128
 129     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 130     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 131
 132     // gets the last point of the current path, (0,0) if not yet set
 133     virtual void GetCurrentPoint( wxDouble& x, wxDouble&y) ;
 134
 135     // adds another path
 136     virtual void AddPath( const wxGraphicsPath* path );
 137
 138     // closes the current sub-path
 139     virtual void CloseSubpath();
 140
 141     //
 142     // These are convenience functions which - if not available natively will be assembled
 143     // using the primitives from above
 144     //
 145
 146     /*
 147
 148     // appends a rectangle as a new closed subpath
 149     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 150     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 151     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 152
 153     // 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)
 154     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 155     */
 156
 157     // returns the native path
 158     virtual void * GetNativePath() const ;
 159
 160     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 161     virtual void UnGetNativePath(void *p) ;
 162
 163     // transforms each point of this path by the matrix
 164     virtual void Transform( wxGraphicsMatrix* matrix ) ;
 165
 166     // gets the bounding box enclosing all points (possibly including control points)
 167     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) ;
 168
 169     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxWINDING_RULE) ;
 170
 171 private :
 172     cairo_t* m_pathContext;
 173     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoPath)
 174 };
 175
 176 class WXDLLIMPEXP_CORE wxCairoMatrix : public wxGraphicsMatrix
 177 {
 178 public :
 179     wxCairoMatrix() ;
 180
 181     wxCairoMatrix(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
 182     virtual ~wxCairoMatrix() ;
 183
 184     virtual wxGraphicsMatrix *Clone() const ;
 185
 186     // concatenates the matrix
 187     virtual void Concat( const wxGraphicsMatrix *t );
 188
 189     // copies the passed in matrix
 190     virtual void Copy( const wxGraphicsMatrix *t );
 191
 192     // sets the matrix to the respective values
 193     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 194         wxDouble tx=0.0, wxDouble ty=0.0);
 195
 196     // makes this the inverse matrix
 197     virtual void Invert();
 198
 199     // returns true if the elements of the transformation matrix are equal ?
 200     virtual bool IsEqual( const wxGraphicsMatrix* t) const ;
 201
 202     // return true if this is the identity matrix
 203     virtual bool IsIdentity();
 204
 205     //
 206     // transformation
 207     //
 208
 209     // add the translation to this matrix
 210     virtual void Translate( wxDouble dx , wxDouble dy );
 211
 212     // add the scale to this matrix
 213     virtual void Scale( wxDouble xScale , wxDouble yScale );
 214
 215     // add the rotation to this matrix (radians)
 216     virtual void Rotate( wxDouble angle );
 217
 218     //
 219     // apply the transforms
 220     //
 221
 222     // applies that matrix to the point
 223     virtual void TransformPoint( wxDouble *x, wxDouble *y );
 224
 225     // applies the matrix except for translations
 226     virtual void TransformDistance( wxDouble *dx, wxDouble *dy );
 227
 228     // returns the native representation
 229     virtual void * GetNativeMatrix() const;
 230 private:
 231     cairo_matrix_t m_matrix ;
 232
 233     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoMatrix)
 234 } ;
 235
 236 class WXDLLIMPEXP_CORE wxCairoPenData : public wxGraphicsObjectRefData
 237 {
 238 public:
 239     wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 240     ~wxCairoPenData();
 241
 242     void Init();
 243
 244     virtual void Apply( wxGraphicsContext* context );
 245     virtual wxDouble GetWidth() { return m_width; }
 246
 247 private :
 248     double m_width;
 249
 250     double m_red;
 251     double m_green;
 252     double m_blue;
 253     double m_alpha;
 254
 255     cairo_line_cap_t m_cap;
 256     cairo_line_join_t m_join;
 257
 258     int m_count;
 259     const double *m_lengths;
 260     double *m_userLengths;
 261
 262     wxPen m_pen;
 263 };
 264
 265 class WXDLLIMPEXP_CORE wxCairoBrushData : public wxGraphicsObjectRefData
 266 {
 267 public:
 268     wxCairoBrushData( wxGraphicsRenderer* renderer );
 269     wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 270     ~wxCairoBrushData ();
 271
 272     virtual void Apply( wxGraphicsContext* context );
 273     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 274         const wxColour&c1, const wxColour&c2 );
 275     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 276         const wxColour &oColor, const wxColour &cColor );
 277
 278 protected:
 279     virtual void Init();
 280
 281 private :
 282     double m_red;
 283     double m_green;
 284     double m_blue;
 285     double m_alpha;
 286
 287     cairo_pattern_t* m_brushPattern;
 288 };
 289
 290 class wxCairoFontData : public wxGraphicsObjectRefData
 291 {
 292 public:
 293     wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 294     ~wxCairoFontData();
 295
 296     virtual void Apply( wxGraphicsContext* context );
 297 private :
 298     wxCharBuffer m_fontName;
 299     double m_size;
 300     cairo_font_slant_t m_slant;
 301     cairo_font_weight_t m_weight;
 302     double m_red;
 303     double m_green;
 304     double m_blue;
 305     double m_alpha;
 306 };
 307
 308 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 309 {
 310     DECLARE_NO_COPY_CLASS(wxCairoContext)
 311
 312 public:
 313     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 314 #ifdef __WXGTK__
 315     wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable );
 316 #endif
 317     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 318     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 319     wxCairoContext();
 320     virtual ~wxCairoContext();
 321
 322     virtual void Clip( const wxRegion &region );
 323
 324     // clips drawings to the rect
 325     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 326
 327     // resets the clipping to original extent
 328     virtual void ResetClip();
 329
 330     virtual void * GetNativeContext();
 331
 332     virtual void StrokePath( const wxGraphicsPath *p );
 333     virtual void FillPath( const wxGraphicsPath *p , int fillStyle = wxWINDING_RULE );
 334
 335     virtual void Translate( wxDouble dx , wxDouble dy );
 336     virtual void Scale( wxDouble xScale , wxDouble yScale );
 337     virtual void Rotate( wxDouble angle );
 338
 339     // concatenates this transform with the current transform of this context
 340     virtual void ConcatTransform( const wxGraphicsMatrix* matrix );
 341
 342     // sets the transform of this context
 343     virtual void SetTransform( const wxGraphicsMatrix* matrix );
 344
 345     // gets the matrix of this context
 346     virtual void GetTransform( wxGraphicsMatrix* matrix );
 347
 348     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 349     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 350     virtual void PushState();
 351     virtual void PopState();
 352
 353     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y);
 354     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 355                                 wxDouble *descent, wxDouble *externalLeading ) const;
 356     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 357
 358 private:
 359     cairo_t* m_context;
 360 };
 361
 362 //-----------------------------------------------------------------------------
 363 // wxCairoPenData implementation
 364 //-----------------------------------------------------------------------------
 365
 366 wxCairoPenData::~wxCairoPenData()
 367 {
 368     delete[] m_userLengths;
 369 }
 370
 371 void wxCairoPenData::Init()
 372 {
 373     m_lengths = NULL;
 374     m_userLengths = NULL;
 375     m_width = 0;
 376     m_count = 0;
 377 }
 378
 379 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 380 : wxGraphicsObjectRefData(renderer)
 381 {
 382     Init();
 383     m_pen = pen;
 384     m_width = m_pen.GetWidth();
 385     if (m_width <= 0.0)
 386         m_width = 0.1;
 387
 388     m_red = m_pen.GetColour().Red()/255.0;
 389     m_green = m_pen.GetColour().Green()/255.0;
 390     m_blue = m_pen.GetColour().Blue()/255.0;
 391     m_alpha = m_pen.GetColour().Alpha()/255.0;
 392
 393     switch ( m_pen.GetCap() )
 394     {
 395     case wxCAP_ROUND :
 396         m_cap = CAIRO_LINE_CAP_ROUND;
 397         break;
 398
 399     case wxCAP_PROJECTING :
 400         m_cap = CAIRO_LINE_CAP_SQUARE;
 401         break;
 402
 403     case wxCAP_BUTT :
 404         m_cap = CAIRO_LINE_CAP_BUTT;
 405         break;
 406
 407     default :
 408         m_cap = CAIRO_LINE_CAP_BUTT;
 409         break;
 410     }
 411
 412     switch ( m_pen.GetJoin() )
 413     {
 414     case wxJOIN_BEVEL :
 415         m_join = CAIRO_LINE_JOIN_BEVEL;
 416         break;
 417
 418     case wxJOIN_MITER :
 419         m_join = CAIRO_LINE_JOIN_MITER;
 420         break;
 421
 422     case wxJOIN_ROUND :
 423         m_join = CAIRO_LINE_JOIN_ROUND;
 424         break;
 425
 426     default :
 427         m_join = CAIRO_LINE_JOIN_MITER;
 428         break;
 429     }
 430
 431     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 432     const double dotted[] =
 433     {
 434         dashUnit , dashUnit + 2.0
 435     };
 436     static const double short_dashed[] =
 437     {
 438         9.0 , 6.0
 439     };
 440     static const double dashed[] =
 441     {
 442         19.0 , 9.0
 443     };
 444     static const double dotted_dashed[] =
 445     {
 446         9.0 , 6.0 , 3.0 , 3.0
 447     };
 448
 449     switch ( m_pen.GetStyle() )
 450     {
 451     case wxSOLID :
 452         break;
 453
 454     case wxDOT :
 455         m_count = WXSIZEOF(dotted);
 456         m_userLengths = new double[ m_count ] ;
 457         memcpy( m_userLengths, dotted, sizeof(dotted) );
 458         m_lengths = m_userLengths;
 459         break;
 460
 461     case wxLONG_DASH :
 462         m_lengths = dotted ;
 463         m_count = WXSIZEOF(dashed);
 464         break;
 465
 466     case wxSHORT_DASH :
 467         m_lengths = dotted ;
 468         m_count = WXSIZEOF(short_dashed);
 469         break;
 470
 471     case wxDOT_DASH :
 472         m_lengths = dotted ;
 473         m_count = WXSIZEOF(dotted_dashed);
 474         break;
 475
 476     case wxUSER_DASH :
 477         {
 478             wxDash *wxdashes ;
 479             m_count = m_pen.GetDashes( &wxdashes ) ;
 480             if ((wxdashes != NULL) && (m_count > 0))
 481             {
 482                 m_userLengths = new double[m_count] ;
 483                 for ( int i = 0 ; i < m_count ; ++i )
 484                 {
 485                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 486
 487                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 488                         m_userLengths[i] = dashUnit + 2.0 ;
 489                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 490                         m_userLengths[i] = dashUnit ;
 491                 }
 492             }
 493             m_lengths = m_userLengths ;
 494         }
 495         break;
 496     case wxSTIPPLE :
 497         {
 498             /*
 499             wxBitmap* bmp = pen.GetStipple();
 500             if ( bmp && bmp->Ok() )
 501             {
 502             wxDELETE( m_penImage );
 503             wxDELETE( m_penBrush );
 504             m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 505             m_penBrush = new TextureBrush(m_penImage);
 506             m_pen->SetBrush( m_penBrush );
 507             }
 508             */
 509         }
 510         break;
 511     default :
 512         if ( m_pen.GetStyle() >= wxFIRST_HATCH && m_pen.GetStyle() <= wxLAST_HATCH )
 513         {
 514             /*
 515             wxDELETE( m_penBrush );
 516             HatchStyle style = HatchStyleHorizontal;
 517             switch( pen.GetStyle() )
 518             {
 519             case wxBDIAGONAL_HATCH :
 520             style = HatchStyleBackwardDiagonal;
 521             break ;
 522             case wxCROSSDIAG_HATCH :
 523             style = HatchStyleDiagonalCross;
 524             break ;
 525             case wxFDIAGONAL_HATCH :
 526             style = HatchStyleForwardDiagonal;
 527             break ;
 528             case wxCROSS_HATCH :
 529             style = HatchStyleCross;
 530             break ;
 531             case wxHORIZONTAL_HATCH :
 532             style = HatchStyleHorizontal;
 533             break ;
 534             case wxVERTICAL_HATCH :
 535             style = HatchStyleVertical;
 536             break ;
 537
 538             }
 539             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 540             pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
 541             m_pen->SetBrush( m_penBrush )
 542             */
 543         }
 544         break;
 545     }
 546 }
 547
 548 void wxCairoPenData::Apply( wxGraphicsContext* context )
 549 {
 550     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 551     cairo_set_line_width(ctext,m_width);
 552     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 553     cairo_set_line_cap(ctext,m_cap);
 554     cairo_set_line_join(ctext,m_join);
 555     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 556 }
 557
 558 //-----------------------------------------------------------------------------
 559 // wxCairoBrushData implementation
 560 //-----------------------------------------------------------------------------
 561
 562 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 563   : wxGraphicsObjectRefData( renderer )
 564 {
 565     Init();
 566 }
 567
 568 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush )
 569   : wxGraphicsObjectRefData(renderer)
 570 {
 571     Init();
 572
 573     m_red = brush.GetColour().Red()/255.0;
 574     m_green = brush.GetColour().Green()/255.0;
 575     m_blue = brush.GetColour().Blue()/255.0;
 576     m_alpha = brush.GetColour().Alpha()/255.0;
 577     /*
 578     if ( brush.GetStyle() == wxSOLID)
 579     {
 580     m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 581     brush.GetColour().Green() , brush.GetColour().Blue() ) );
 582     }
 583     else if ( brush.IsHatch() )
 584     {
 585     HatchStyle style = HatchStyleHorizontal;
 586     switch( brush.GetStyle() )
 587     {
 588     case wxBDIAGONAL_HATCH :
 589     style = HatchStyleBackwardDiagonal;
 590     break ;
 591     case wxCROSSDIAG_HATCH :
 592     style = HatchStyleDiagonalCross;
 593     break ;
 594     case wxFDIAGONAL_HATCH :
 595     style = HatchStyleForwardDiagonal;
 596     break ;
 597     case wxCROSS_HATCH :
 598     style = HatchStyleCross;
 599     break ;
 600     case wxHORIZONTAL_HATCH :
 601     style = HatchStyleHorizontal;
 602     break ;
 603     case wxVERTICAL_HATCH :
 604     style = HatchStyleVertical;
 605     break ;
 606
 607     }
 608     m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 609     brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
 610     }
 611     else
 612     {
 613     wxBitmap* bmp = brush.GetStipple();
 614     if ( bmp && bmp->Ok() )
 615     {
 616     wxDELETE( m_brushImage );
 617     m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 618     m_brush = new TextureBrush(m_brushImage);
 619     }
 620     }
 621     */
 622 }
 623
 624 wxCairoBrushData::~wxCairoBrushData ()
 625 {
 626     if (m_brushPattern)
 627         cairo_pattern_destroy(m_brushPattern);
 628 }
 629
 630 void wxCairoBrushData::Apply( wxGraphicsContext* context )
 631 {
 632     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 633     if ( m_brushPattern )
 634     {
 635         cairo_set_source(ctext,m_brushPattern);
 636     }
 637     else
 638     {
 639         cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 640     }
 641 }
 642
 643 void wxCairoBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 644         const wxColour&c1, const wxColour&c2 )
 645 {
 646     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 647     cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,c1.Red()/255.0,
 648         c1.Green()/255.0, c1.Blue()/255.0,c1.Alpha()/255.0);
 649     cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,c2.Red()/255.0,
 650         c2.Green()/255.0, c2.Blue()/255.0,c2.Alpha()/255.0);
 651     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
 652 }
 653
 654 void wxCairoBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 655         const wxColour &oColor, const wxColour &cColor )
 656 {
 657     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 658     cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,oColor.Red()/255.0,
 659         oColor.Green()/255.0, oColor.Blue()/255.0,oColor.Alpha()/255.0);
 660     cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,cColor.Red()/255.0,
 661         cColor.Green()/255.0, cColor.Blue()/255.0,cColor.Alpha()/255.0);
 662     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
 663 }
 664
 665 void wxCairoBrushData::Init()
 666 {
 667     m_brushPattern = NULL;
 668 }
 669
 670 //-----------------------------------------------------------------------------
 671 // wxCairoFontData implementation
 672 //-----------------------------------------------------------------------------
 673
 674 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 675                          const wxColour& col ) : wxGraphicsObjectRefData(renderer)
 676 {
 677     m_red = col.Red()/255.0;
 678     m_green = col.Green()/255.0;
 679     m_blue = col.Blue()/255.0;
 680     m_alpha = col.Alpha()/255.0;
 681
 682     m_size = font.GetPointSize();
 683     m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
 684     m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
 685     m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
 686 }
 687
 688 wxCairoFontData::~wxCairoFontData()
 689 {
 690 }
 691
 692 void wxCairoFontData::Apply( wxGraphicsContext* context )
 693 {
 694     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 695     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 696     cairo_select_font_face(ctext,m_fontName,m_slant,m_weight);
 697     cairo_set_font_size(ctext,m_size);
 698     // TODO UNDERLINE
 699     // TODO FIX SIZE
 700 }
 701
 702 //-----------------------------------------------------------------------------
 703 // wxCairoPath implementation
 704 //-----------------------------------------------------------------------------
 705
 706 IMPLEMENT_DYNAMIC_CLASS(wxCairoPath,wxGraphicsPath)
 707
 708 wxCairoPath::wxCairoPath() : wxGraphicsPath(NULL)
 709 {
 710     wxLogDebug(wxT("Illegal Constructor called"));
 711 }
 712
 713 wxCairoPath::wxCairoPath( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
 714     : wxGraphicsPath(renderer)
 715 {
 716     if (pathcontext)
 717     {
 718         m_pathContext = pathcontext;
 719     }
 720     else
 721     {
 722         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 723         m_pathContext = cairo_create(surface);
 724         cairo_surface_destroy (surface);
 725     }
 726 }
 727
 728 wxCairoPath::~wxCairoPath()
 729 {
 730     cairo_destroy(m_pathContext);
 731 }
 732
 733 wxGraphicsPath *wxCairoPath::Clone() const
 734 {
 735     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 736     cairo_t* pathcontext = cairo_create(surface);
 737     cairo_surface_destroy (surface);
 738
 739     cairo_path_t* path = cairo_copy_path(m_pathContext);
 740     cairo_append_path(pathcontext, path);
 741     cairo_path_destroy(path);
 742     return new wxCairoPath( GetRenderer() ,pathcontext);
 743 }
 744
 745
 746 void* wxCairoPath::GetNativePath() const
 747 {
 748     return cairo_copy_path(m_pathContext) ;
 749 }
 750
 751 void wxCairoPath::UnGetNativePath(void *p)
 752 {
 753     cairo_path_destroy((cairo_path_t*)p);
 754 }
 755
 756 //
 757 // The Primitives
 758 //
 759
 760 void wxCairoPath::MoveToPoint( wxDouble x , wxDouble y )
 761 {
 762     cairo_move_to(m_pathContext,x,y);
 763 }
 764
 765 void wxCairoPath::AddLineToPoint( wxDouble x , wxDouble y )
 766 {
 767     cairo_line_to(m_pathContext,x,y);
 768 }
 769
 770 void wxCairoPath::AddPath( const wxGraphicsPath* path )
 771 {
 772     // TODO
 773 }
 774
 775 void wxCairoPath::CloseSubpath()
 776 {
 777     cairo_close_path(m_pathContext);
 778 }
 779
 780 void wxCairoPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 781 {
 782     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
 783 }
 784
 785 // gets the last point of the current path, (0,0) if not yet set
 786 void wxCairoPath::GetCurrentPoint( wxDouble& x, wxDouble&y)
 787 {
 788     double dx,dy;
 789     cairo_get_current_point(m_pathContext,&dx,&dy);
 790     x = dx;
 791     y = dy;
 792 }
 793
 794 void wxCairoPath::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 795 {
 796     // as clockwise means positive in our system (y pointing downwards)
 797     // TODO make this interpretation dependent of the
 798     // real device trans
 799     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
 800         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
 801     else
 802         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
 803 }
 804
 805 // transforms each point of this path by the matrix
 806 void wxCairoPath::Transform( wxGraphicsMatrix* matrix )
 807 {
 808     // as we don't have a true path object, we have to apply the inverse
 809     // matrix to the context
 810     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
 811     cairo_matrix_invert( &m );
 812     cairo_transform(m_pathContext,&m);
 813 }
 814
 815 // gets the bounding box enclosing all points (possibly including control points)
 816 void wxCairoPath::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h)
 817 {
 818     double x1,y1,x2,y2;
 819
 820     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
 821     if ( x2 < x1 )
 822     {
 823         *x = x2;
 824         *w = x1-x2;
 825     }
 826     else
 827     {
 828         *x = x1;
 829         *w = x2-x1;
 830     }
 831
 832     if( y2 < y1 )
 833     {
 834         *y = y2;
 835         *h = y1-y2;
 836     }
 837     else
 838     {
 839         *y = y1;
 840         *h = y2-y1;
 841     }
 842 }
 843
 844 bool wxCairoPath::Contains( wxDouble x, wxDouble y, int fillStyle )
 845 {
 846     return cairo_in_stroke( m_pathContext, x, y) != NULL;
 847 }
 848
 849 //-----------------------------------------------------------------------------
 850 // wxCairoMatrix implementation
 851 //-----------------------------------------------------------------------------
 852
 853 IMPLEMENT_DYNAMIC_CLASS(wxCairoMatrix,wxGraphicsMatrix)
 854
 855 wxCairoMatrix::wxCairoMatrix() : wxGraphicsMatrix(NULL)
 856 {
 857     wxLogDebug(wxT("Illegal Constructor called"));
 858 }
 859
 860 wxCairoMatrix::wxCairoMatrix(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
 861     : wxGraphicsMatrix(renderer)
 862 {
 863     if ( matrix )
 864         m_matrix = *matrix;
 865 }
 866
 867 wxCairoMatrix::~wxCairoMatrix()
 868 {
 869     // nothing to do
 870 }
 871
 872 wxGraphicsMatrix *wxCairoMatrix::Clone() const
 873 {
 874     return new wxCairoMatrix(GetRenderer(),&m_matrix);
 875 }
 876
 877 // concatenates the matrix
 878 void wxCairoMatrix::Concat( const wxGraphicsMatrix *t )
 879 {
 880     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
 881 }
 882
 883 // copies the passed in matrix
 884 void wxCairoMatrix::Copy( const wxGraphicsMatrix *t )
 885 {
 886     m_matrix = *((cairo_matrix_t*) t->GetNativeMatrix());
 887 }
 888
 889 // sets the matrix to the respective values
 890 void wxCairoMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 891                         wxDouble tx, wxDouble ty)
 892 {
 893     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
 894 }
 895
 896 // makes this the inverse matrix
 897 void wxCairoMatrix::Invert()
 898 {
 899     cairo_matrix_invert( &m_matrix );
 900 }
 901
 902 // returns true if the elements of the transformation matrix are equal ?
 903 bool wxCairoMatrix::IsEqual( const wxGraphicsMatrix* t) const
 904 {
 905     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
 906     return (
 907         m_matrix.xx == tm->xx &&
 908         m_matrix.yx == tm->yx &&
 909         m_matrix.xy == tm->xy &&
 910         m_matrix.yy == tm->yy &&
 911         m_matrix.x0 == tm->x0 &&
 912         m_matrix.y0 == tm->y0 ) ;
 913 }
 914
 915 // return true if this is the identity matrix
 916 bool wxCairoMatrix::IsIdentity()
 917 {
 918     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
 919         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
 920 }
 921
 922 //
 923 // transformation
 924 //
 925
 926 // add the translation to this matrix
 927 void wxCairoMatrix::Translate( wxDouble dx , wxDouble dy )
 928 {
 929     cairo_matrix_translate( &m_matrix, dx, dy) ;
 930 }
 931
 932 // add the scale to this matrix
 933 void wxCairoMatrix::Scale( wxDouble xScale , wxDouble yScale )
 934 {
 935     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
 936 }
 937
 938 // add the rotation to this matrix (radians)
 939 void wxCairoMatrix::Rotate( wxDouble angle )
 940 {
 941     cairo_matrix_rotate( &m_matrix, angle) ;
 942 }
 943
 944 //
 945 // apply the transforms
 946 //
 947
 948 // applies that matrix to the point
 949 void wxCairoMatrix::TransformPoint( wxDouble *x, wxDouble *y )
 950 {
 951     double lx = *x, ly = *y ;
 952     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
 953     *x = lx;
 954     *y = ly;
 955 }
 956
 957 // applies the matrix except for translations
 958 void wxCairoMatrix::TransformDistance( wxDouble *dx, wxDouble *dy )
 959 {
 960     double lx = *dx, ly = *dy ;
 961     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
 962     *dx = lx;
 963     *dy = ly;
 964 }
 965
 966 // returns the native representation
 967 void * wxCairoMatrix::GetNativeMatrix() const
 968 {
 969     return (void*) &m_matrix;
 970 }
 971
 972 //-----------------------------------------------------------------------------
 973 // wxCairoContext implementation
 974 //-----------------------------------------------------------------------------
 975
 976 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
 977 : wxGraphicsContext(renderer)
 978 {
 979 #ifdef __WXGTK__
 980     m_context = gdk_cairo_create( dc.m_window ) ;
 981 #endif
 982     PushState();
 983     PushState();
 984 }
 985
 986 #ifdef __WXGTK__
 987 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
 988 : wxGraphicsContext(renderer)
 989 {
 990     m_context = gdk_cairo_create( drawable ) ;
 991     PushState();
 992     PushState();
 993 }
 994 #endif
 995
 996 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
 997 : wxGraphicsContext(renderer)
 998 {
 999     m_context = context ;
1000     PushState();
1001     PushState();
1002 }
1003
1004 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1005 : wxGraphicsContext(renderer)
1006 {
1007 #ifdef __WXGTK__
1008     // something along these lines (copied from dcclient)
1009
1010     GtkWidget *widget = window->m_wxwindow;
1011
1012     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1013     // code should still be able to create wxClientDCs for them, so we will
1014     // use the parent window here then.
1015     if ( !widget )
1016     {
1017         window = window->GetParent();
1018         widget = window->m_wxwindow;
1019     }
1020
1021     wxASSERT_MSG( widget, wxT("wxCairoContext needs a widget") );
1022
1023     GtkPizza *pizza = GTK_PIZZA( widget );
1024     GdkDrawable* drawable = pizza->bin_window;
1025     m_context = gdk_cairo_create( drawable ) ;
1026 #endif
1027     PushState();
1028     PushState();
1029 }
1030
1031 wxCairoContext::~wxCairoContext()
1032 {
1033     if ( m_context )
1034     {
1035         PopState();
1036         PopState();
1037         cairo_destroy(m_context);
1038     }
1039 }
1040
1041
1042 void wxCairoContext::Clip( const wxRegion & WXUNUSED(region) )
1043 {
1044 // TODO
1045 }
1046
1047 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1048 {
1049 // TODO
1050 }
1051
1052 void wxCairoContext::ResetClip()
1053 {
1054 // TODO
1055 }
1056
1057
1058 void wxCairoContext::StrokePath( const wxGraphicsPath *path )
1059 {
1060     if ( !m_pen.IsNull() )
1061     {
1062         cairo_path_t* cp = (cairo_path_t*) path->GetNativePath() ;
1063         cairo_append_path(m_context,cp);
1064         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1065         cairo_stroke(m_context);
1066         wxConstCast(path, wxGraphicsPath)->UnGetNativePath(cp);
1067     }
1068 }
1069
1070 void wxCairoContext::FillPath( const wxGraphicsPath *path , int fillStyle )
1071 {
1072     if ( !m_brush.IsNull() )
1073     {
1074         cairo_path_t* cp = (cairo_path_t*) path->GetNativePath() ;
1075         cairo_append_path(m_context,cp);
1076         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1077         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1078         cairo_fill(m_context);
1079         wxConstCast(path, wxGraphicsPath)->UnGetNativePath(cp);
1080     }
1081 }
1082
1083 void wxCairoContext::Rotate( wxDouble angle )
1084 {
1085     cairo_rotate(m_context,angle);
1086 }
1087
1088 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1089 {
1090     cairo_translate(m_context,dx,dy);
1091 }
1092
1093 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1094 {
1095     cairo_scale(m_context,xScale,yScale);
1096 }
1097
1098 // concatenates this transform with the current transform of this context
1099 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix* matrix )
1100 {
1101     cairo_transform(m_context,(const cairo_matrix_t *) matrix->GetNativeMatrix());
1102 }
1103
1104 // sets the transform of this context
1105 void wxCairoContext::SetTransform( const wxGraphicsMatrix* matrix )
1106 {
1107     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix->GetNativeMatrix());
1108 }
1109
1110 // gets the matrix of this context
1111 void wxCairoContext::GetTransform( wxGraphicsMatrix* matrix )
1112 {
1113     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix->GetNativeMatrix());
1114 }
1115
1116
1117
1118 void wxCairoContext::PushState()
1119 {
1120     cairo_save(m_context);
1121 }
1122
1123 void wxCairoContext::PopState()
1124 {
1125     cairo_restore(m_context);
1126 }
1127
1128 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1129 {
1130     /*
1131         Bitmap* image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());
1132         m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1133         delete image ;
1134     */
1135 }
1136
1137 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1138 {
1139     /*
1140         Bitmap* image = Bitmap::FromHICON((HICON)icon.GetHICON());
1141         m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1142         delete image ;
1143     */
1144 }
1145
1146
1147 void wxCairoContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1148 {
1149     if ( m_font.IsNull() || str.IsEmpty())
1150         return ;
1151     cairo_move_to(m_context,x,y);
1152     const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
1153     ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
1154     cairo_show_text(m_context,buf);
1155 }
1156
1157 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1158                                     wxDouble *descent, wxDouble *externalLeading ) const
1159 {
1160     // TODO
1161 }
1162
1163 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1164 {
1165     widths.Empty();
1166     widths.Add(0, text.length());
1167
1168     if (text.empty())
1169         return;
1170
1171     // TODO
1172 }
1173
1174 void * wxCairoContext::GetNativeContext()
1175 {
1176     return m_context;
1177 }
1178
1179 //-----------------------------------------------------------------------------
1180 // wxCairoRenderer declaration
1181 //-----------------------------------------------------------------------------
1182
1183 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
1184 {
1185 public :
1186     wxCairoRenderer() {}
1187
1188     virtual ~wxCairoRenderer() {}
1189
1190     // Context
1191
1192     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1193
1194     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1195
1196     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1197
1198     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1199
1200     // Path
1201
1202     virtual wxGraphicsPath * CreatePath();
1203
1204     // Matrix
1205
1206     virtual wxGraphicsMatrix * CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1207         wxDouble tx=0.0, wxDouble ty=0.0);
1208
1209
1210     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1211
1212     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1213
1214     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1215     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1216         const wxColour&c1, const wxColour&c2) ;
1217
1218     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1219     // with radius r and color cColor
1220     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1221         const wxColour &oColor, const wxColour &cColor) ;
1222
1223     // sets the font
1224     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1225
1226 private :
1227     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
1228 } ;
1229
1230 //-----------------------------------------------------------------------------
1231 // wxCairoRenderer implementation
1232 //-----------------------------------------------------------------------------
1233
1234 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
1235
1236 static wxCairoRenderer gs_cairoGraphicsRenderer;
1237
1238 #ifdef __WXGTK__
1239 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1240 {
1241     return &gs_cairoGraphicsRenderer;
1242 }
1243 #endif
1244
1245 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
1246 {
1247     return new wxCairoContext(this,dc);
1248 }
1249
1250 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
1251 {
1252     return new wxCairoContext(this,(cairo_t*)context);
1253 }
1254
1255
1256 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
1257 {
1258 #ifdef __WXGTK__
1259     return new wxCairoContext(this,(GdkDrawable*)window);
1260 #else
1261     return NULL;
1262 #endif
1263 }
1264
1265 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
1266 {
1267     return new wxCairoContext(this, window );
1268 }
1269
1270 // Path
1271
1272 wxGraphicsPath * wxCairoRenderer::CreatePath()
1273 {
1274     return new wxCairoPath( this );
1275 }
1276
1277
1278 // Matrix
1279
1280 wxGraphicsMatrix * wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1281                                                            wxDouble tx, wxDouble ty)
1282
1283 {
1284     wxCairoMatrix* m = new wxCairoMatrix( this );
1285     m->Set( a,b,c,d,tx,ty ) ;
1286     return m;
1287 }
1288
1289 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
1290 {
1291     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
1292         return wxNullGraphicsPen;
1293     else
1294     {
1295         wxGraphicsPen p;
1296         p.SetRefData(new wxCairoPenData( this, pen ));
1297         return p;
1298     }
1299 }
1300
1301 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
1302 {
1303     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
1304         return wxNullGraphicsBrush;
1305     else
1306     {
1307         wxGraphicsBrush p;
1308         p.SetRefData(new wxCairoBrushData( this, brush ));
1309         return p;
1310     }
1311 }
1312
1313 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1314 wxGraphicsBrush wxCairoRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1315                                                                       const wxColour&c1, const wxColour&c2)
1316 {
1317     wxGraphicsBrush p;
1318     wxCairoBrushData* d = new wxCairoBrushData( this );
1319     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
1320     p.SetRefData(d);
1321     return p;
1322 }
1323
1324 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1325 // with radius r and color cColor
1326 wxGraphicsBrush wxCairoRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1327                                                                       const wxColour &oColor, const wxColour &cColor)
1328 {
1329     wxGraphicsBrush p;
1330     wxCairoBrushData* d = new wxCairoBrushData( this );
1331     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
1332     p.SetRefData(d);
1333     return p;
1334 }
1335
1336 // sets the font
1337 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
1338 {
1339     if ( font.Ok() )
1340     {
1341         wxGraphicsFont p;
1342         p.SetRefData(new wxCairoFontData( this , font, col ));
1343         return p;
1344     }
1345     else
1346         return wxNullGraphicsFont;
1347 }
1348
1349 #endif  // wxUSE_GRAPHICS_CONTEXT