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 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #if wxUSE_GRAPHICS_CONTEXT
  19
  20 #include "wx/graphics.h"
  21
  22 #if wxUSE_CAIRO
  23
  24 #include "wx/cairo.h"
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/bitmap.h"
  28     #include "wx/icon.h"
  29     #include "wx/dcclient.h"
  30     #include "wx/dcmemory.h"
  31     #include "wx/dcprint.h"
  32 #endif
  33
  34 #include "wx/private/graphics.h"
  35 #include "wx/rawbmp.h"
  36 #include "wx/vector.h"
  37
  38 using namespace std;
  39
  40 //-----------------------------------------------------------------------------
  41 // device context implementation
  42 //
  43 // more and more of the dc functionality should be implemented by calling
  44 // the appropricate wxCairoContext, but we will have to do that step by step
  45 // also coordinate conversions should be moved to native matrix ops
  46 //-----------------------------------------------------------------------------
  47
  48 // we always stock two context states, one at entry, to be able to preserve the
  49 // state we were called with, the other one after changing to HI Graphics orientation
  50 // (this one is used for getting back clippings etc)
  51
  52 //-----------------------------------------------------------------------------
  53 // wxGraphicsPath implementation
  54 //-----------------------------------------------------------------------------
  55
  56 // TODO remove this dependency (gdiplus needs the macros)
  57
  58 #ifndef max
  59 #define max(a,b)            (((a) > (b)) ? (a) : (b))
  60 #endif
  61
  62 #ifndef min
  63 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  64 #endif
  65
  66 #include <cairo.h>
  67 #ifdef __WXMSW__
  68 #include <cairo-win32.h>
  69 #endif
  70
  71 #ifdef __WXGTK__
  72 #include <gtk/gtk.h>
  73 #include "wx/fontutil.h"
  74 #include "wx/gtk/dc.h"
  75 #endif
  76
  77 #ifdef __WXMSW__
  78 #include <cairo-win32.h>
  79 #endif
  80
  81 #ifdef __WXMAC__
  82 #include "wx/osx/private.h"
  83 #include <cairo-quartz.h>
  84 #include <cairo-atsui.h>
  85 #endif
  86
  87 class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
  88 {
  89 public :
  90     wxCairoPathData(wxGraphicsRenderer* renderer, cairo_t* path = NULL);
  91     ~wxCairoPathData();
  92
  93     virtual wxGraphicsObjectRefData *Clone() const;
  94
  95     //
  96     // These are the path primitives from which everything else can be constructed
  97     //
  98
  99     // begins a new subpath at (x,y)
 100     virtual void MoveToPoint( wxDouble x, wxDouble y );
 101
 102     // adds a straight line from the current point to (x,y)
 103     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 104
 105     // adds a cubic Bezier curve from the current point, using two control points and an end point
 106     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 107
 108
 109     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 110     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 111
 112     // gets the last point of the current path, (0,0) if not yet set
 113     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 114
 115     // adds another path
 116     virtual void AddPath( const wxGraphicsPathData* path );
 117
 118     // closes the current sub-path
 119     virtual void CloseSubpath();
 120
 121     //
 122     // These are convenience functions which - if not available natively will be assembled
 123     // using the primitives from above
 124     //
 125
 126     /*
 127
 128     // appends a rectangle as a new closed subpath
 129     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 130     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 131     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 132
 133     // 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)
 134     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 135     */
 136
 137     // returns the native path
 138     virtual void * GetNativePath() const ;
 139
 140     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 141     virtual void UnGetNativePath(void *p) const;
 142
 143     // transforms each point of this path by the matrix
 144     virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
 145
 146     // gets the bounding box enclosing all points (possibly including control points)
 147     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
 148
 149     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxWINDING_RULE) const;
 150
 151 private :
 152     cairo_t* m_pathContext;
 153 };
 154
 155 class WXDLLIMPEXP_CORE wxCairoMatrixData : public wxGraphicsMatrixData
 156 {
 157 public :
 158     wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
 159     virtual ~wxCairoMatrixData() ;
 160
 161     virtual wxGraphicsObjectRefData *Clone() const ;
 162
 163     // concatenates the matrix
 164     virtual void Concat( const wxGraphicsMatrixData *t );
 165
 166     // sets the matrix to the respective values
 167     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 168         wxDouble tx=0.0, wxDouble ty=0.0);
 169
 170     // gets the component valuess of the matrix
 171     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 172                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 173
 174     // makes this the inverse matrix
 175     virtual void Invert();
 176
 177     // returns true if the elements of the transformation matrix are equal ?
 178     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 179
 180     // return true if this is the identity matrix
 181     virtual bool IsIdentity() const;
 182
 183     //
 184     // transformation
 185     //
 186
 187     // add the translation to this matrix
 188     virtual void Translate( wxDouble dx , wxDouble dy );
 189
 190     // add the scale to this matrix
 191     virtual void Scale( wxDouble xScale , wxDouble yScale );
 192
 193     // add the rotation to this matrix (radians)
 194     virtual void Rotate( wxDouble angle );
 195
 196     //
 197     // apply the transforms
 198     //
 199
 200     // applies that matrix to the point
 201     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 202
 203     // applies the matrix except for translations
 204     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 205
 206     // returns the native representation
 207     virtual void * GetNativeMatrix() const;
 208 private:
 209     cairo_matrix_t m_matrix ;
 210 } ;
 211
 212 class WXDLLIMPEXP_CORE wxCairoPenData : public wxGraphicsObjectRefData
 213 {
 214 public:
 215     wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 216     ~wxCairoPenData();
 217
 218     void Init();
 219
 220     virtual void Apply( wxGraphicsContext* context );
 221     virtual wxDouble GetWidth() { return m_width; }
 222
 223 private :
 224     double m_width;
 225
 226     double m_red;
 227     double m_green;
 228     double m_blue;
 229     double m_alpha;
 230
 231     cairo_line_cap_t m_cap;
 232     cairo_line_join_t m_join;
 233
 234     int m_count;
 235     const double *m_lengths;
 236     double *m_userLengths;
 237
 238     wxPen m_pen;
 239
 240     wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
 241 };
 242
 243 class WXDLLIMPEXP_CORE wxCairoBrushData : public wxGraphicsObjectRefData
 244 {
 245 public:
 246     wxCairoBrushData( wxGraphicsRenderer* renderer );
 247     wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 248     ~wxCairoBrushData ();
 249
 250     virtual void Apply( wxGraphicsContext* context );
 251     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 252         const wxColour&c1, const wxColour&c2 );
 253     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 254         const wxColour &oColor, const wxColour &cColor );
 255
 256 protected:
 257     virtual void Init();
 258
 259 private :
 260     double m_red;
 261     double m_green;
 262     double m_blue;
 263     double m_alpha;
 264
 265     cairo_pattern_t* m_brushPattern;
 266 };
 267
 268 class wxCairoFontData : public wxGraphicsObjectRefData
 269 {
 270 public:
 271     wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 272     ~wxCairoFontData();
 273
 274     virtual void Apply( wxGraphicsContext* context );
 275 #ifdef __WXGTK__
 276     const PangoFontDescription* GetFont() const { return m_font; }
 277     bool GetUnderlined() const { return m_underlined; }
 278 #endif
 279 private :
 280     double m_size;
 281     bool m_underlined;
 282     double m_red;
 283     double m_green;
 284     double m_blue;
 285     double m_alpha;
 286 #ifdef __WXMAC__
 287     cairo_font_face_t *m_font;
 288 #elif defined(__WXGTK__)
 289     PangoFontDescription* m_font;
 290 #else
 291     wxCharBuffer m_fontName;
 292     cairo_font_slant_t m_slant;
 293     cairo_font_weight_t m_weight;
 294 #endif
 295 #ifdef __WXMSW__
 296     wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
 297 #endif
 298 };
 299
 300 class wxCairoBitmapData : public wxGraphicsObjectRefData
 301 {
 302 public:
 303     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
 304     wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
 305     ~wxCairoBitmapData();
 306
 307     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
 308     virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
 309     virtual wxSize GetSize() { return wxSize(m_width, m_height); }
 310 private :
 311     cairo_surface_t* m_surface;
 312     cairo_pattern_t* m_pattern;
 313     int m_width;
 314     int m_height;
 315     unsigned char* m_buffer;
 316 };
 317
 318 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 319 {
 320 public:
 321     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 322     wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
 323     wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
 324 #ifdef __WXGTK__
 325     wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable );
 326 #endif
 327     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 328     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 329     wxCairoContext();
 330     virtual ~wxCairoContext();
 331
 332     virtual bool ShouldOffset() const
 333     {
 334         int penwidth = 0 ;
 335         if ( !m_pen.IsNull() )
 336         {
 337             penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
 338             if ( penwidth == 0 )
 339                 penwidth = 1;
 340         }
 341         return ( penwidth % 2 ) == 1;
 342     }
 343
 344     virtual void Clip( const wxRegion &region );
 345 #ifdef __WXMSW__
 346     cairo_surface_t* m_mswSurface;
 347 #endif
 348
 349     // clips drawings to the rect
 350     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 351
 352     // resets the clipping to original extent
 353     virtual void ResetClip();
 354
 355     virtual void * GetNativeContext();
 356
 357     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 358
 359     virtual bool SetCompositionMode(wxCompositionMode op);
 360
 361     virtual void BeginLayer(wxDouble opacity);
 362
 363     virtual void EndLayer();
 364
 365     virtual void StrokePath( const wxGraphicsPath& p );
 366     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
 367
 368     virtual void Translate( wxDouble dx , wxDouble dy );
 369     virtual void Scale( wxDouble xScale , wxDouble yScale );
 370     virtual void Rotate( wxDouble angle );
 371
 372     // concatenates this transform with the current transform of this context
 373     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 374
 375     // sets the transform of this context
 376     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 377
 378     // gets the matrix of this context
 379     virtual wxGraphicsMatrix GetTransform() const;
 380
 381     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 382     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 383     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 384     virtual void PushState();
 385     virtual void PopState();
 386
 387     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 388                                 wxDouble *descent, wxDouble *externalLeading ) const;
 389     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 390
 391 protected:
 392     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
 393
 394 private:
 395     void Init(cairo_t *context);
 396
 397     cairo_t* m_context;
 398
 399     wxVector<float> m_layerOpacities;
 400
 401     wxDECLARE_NO_COPY_CLASS(wxCairoContext);
 402 };
 403
 404 //-----------------------------------------------------------------------------
 405 // wxCairoPenData implementation
 406 //-----------------------------------------------------------------------------
 407
 408 wxCairoPenData::~wxCairoPenData()
 409 {
 410     delete[] m_userLengths;
 411 }
 412
 413 void wxCairoPenData::Init()
 414 {
 415     m_lengths = NULL;
 416     m_userLengths = NULL;
 417     m_width = 0;
 418     m_count = 0;
 419 }
 420
 421 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 422 : wxGraphicsObjectRefData(renderer)
 423 {
 424     Init();
 425     m_pen = pen;
 426     m_width = m_pen.GetWidth();
 427     if (m_width <= 0.0)
 428         m_width = 0.1;
 429
 430     m_red = m_pen.GetColour().Red()/255.0;
 431     m_green = m_pen.GetColour().Green()/255.0;
 432     m_blue = m_pen.GetColour().Blue()/255.0;
 433     m_alpha = m_pen.GetColour().Alpha()/255.0;
 434
 435     switch ( m_pen.GetCap() )
 436     {
 437     case wxCAP_ROUND :
 438         m_cap = CAIRO_LINE_CAP_ROUND;
 439         break;
 440
 441     case wxCAP_PROJECTING :
 442         m_cap = CAIRO_LINE_CAP_SQUARE;
 443         break;
 444
 445     case wxCAP_BUTT :
 446         m_cap = CAIRO_LINE_CAP_BUTT;
 447         break;
 448
 449     default :
 450         m_cap = CAIRO_LINE_CAP_BUTT;
 451         break;
 452     }
 453
 454     switch ( m_pen.GetJoin() )
 455     {
 456     case wxJOIN_BEVEL :
 457         m_join = CAIRO_LINE_JOIN_BEVEL;
 458         break;
 459
 460     case wxJOIN_MITER :
 461         m_join = CAIRO_LINE_JOIN_MITER;
 462         break;
 463
 464     case wxJOIN_ROUND :
 465         m_join = CAIRO_LINE_JOIN_ROUND;
 466         break;
 467
 468     default :
 469         m_join = CAIRO_LINE_JOIN_MITER;
 470         break;
 471     }
 472
 473     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 474     const double dotted[] =
 475     {
 476         dashUnit , dashUnit + 2.0
 477     };
 478     static const double short_dashed[] =
 479     {
 480         9.0 , 6.0
 481     };
 482     static const double dashed[] =
 483     {
 484         19.0 , 9.0
 485     };
 486     static const double dotted_dashed[] =
 487     {
 488         9.0 , 6.0 , 3.0 , 3.0
 489     };
 490
 491     switch ( m_pen.GetStyle() )
 492     {
 493     case wxPENSTYLE_SOLID :
 494         break;
 495
 496     case wxPENSTYLE_DOT :
 497         m_count = WXSIZEOF(dotted);
 498         m_userLengths = new double[ m_count ] ;
 499         memcpy( m_userLengths, dotted, sizeof(dotted) );
 500         m_lengths = m_userLengths;
 501         break;
 502
 503     case wxPENSTYLE_LONG_DASH :
 504         m_lengths = dashed ;
 505         m_count = WXSIZEOF(dashed);
 506         break;
 507
 508     case wxPENSTYLE_SHORT_DASH :
 509         m_lengths = short_dashed ;
 510         m_count = WXSIZEOF(short_dashed);
 511         break;
 512
 513     case wxPENSTYLE_DOT_DASH :
 514         m_lengths = dotted_dashed ;
 515         m_count = WXSIZEOF(dotted_dashed);
 516         break;
 517
 518     case wxPENSTYLE_USER_DASH :
 519         {
 520             wxDash *wxdashes ;
 521             m_count = m_pen.GetDashes( &wxdashes ) ;
 522             if ((wxdashes != NULL) && (m_count > 0))
 523             {
 524                 m_userLengths = new double[m_count] ;
 525                 for ( int i = 0 ; i < m_count ; ++i )
 526                 {
 527                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 528
 529                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 530                         m_userLengths[i] = dashUnit + 2.0 ;
 531                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 532                         m_userLengths[i] = dashUnit ;
 533                 }
 534             }
 535             m_lengths = m_userLengths ;
 536         }
 537         break;
 538     case wxPENSTYLE_STIPPLE :
 539         {
 540             /*
 541             wxBitmap* bmp = pen.GetStipple();
 542             if ( bmp && bmp->Ok() )
 543             {
 544             wxDELETE( m_penImage );
 545             wxDELETE( m_penBrush );
 546             m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 547             m_penBrush = new TextureBrush(m_penImage);
 548             m_pen->SetBrush( m_penBrush );
 549             }
 550             */
 551         }
 552         break;
 553     default :
 554         if ( m_pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
 555             && m_pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
 556         {
 557             /*
 558             wxDELETE( m_penBrush );
 559             HatchStyle style = HatchStyleHorizontal;
 560             switch( pen.GetStyle() )
 561             {
 562             case wxPENSTYLE_BDIAGONAL_HATCH :
 563             style = HatchStyleBackwardDiagonal;
 564             break ;
 565             case wxPENSTYLE_CROSSDIAG_HATCH :
 566             style = HatchStyleDiagonalCross;
 567             break ;
 568             case wxPENSTYLE_FDIAGONAL_HATCH :
 569             style = HatchStyleForwardDiagonal;
 570             break ;
 571             case wxPENSTYLE_CROSS_HATCH :
 572             style = HatchStyleCross;
 573             break ;
 574             case wxPENSTYLE_HORIZONTAL_HATCH :
 575             style = HatchStyleHorizontal;
 576             break ;
 577             case wxPENSTYLE_VERTICAL_HATCH :
 578             style = HatchStyleVertical;
 579             break ;
 580
 581             }
 582             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 583             pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
 584             m_pen->SetBrush( m_penBrush )
 585             */
 586         }
 587         break;
 588     }
 589 }
 590
 591 void wxCairoPenData::Apply( wxGraphicsContext* context )
 592 {
 593     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 594     cairo_set_line_width(ctext,m_width);
 595     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 596     cairo_set_line_cap(ctext,m_cap);
 597     cairo_set_line_join(ctext,m_join);
 598     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 599 }
 600
 601 //-----------------------------------------------------------------------------
 602 // wxCairoBrushData implementation
 603 //-----------------------------------------------------------------------------
 604
 605 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 606   : wxGraphicsObjectRefData( renderer )
 607 {
 608     Init();
 609 }
 610
 611 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush )
 612   : wxGraphicsObjectRefData(renderer)
 613 {
 614     Init();
 615
 616     m_red = brush.GetColour().Red()/255.0;
 617     m_green = brush.GetColour().Green()/255.0;
 618     m_blue = brush.GetColour().Blue()/255.0;
 619     m_alpha = brush.GetColour().Alpha()/255.0;
 620     /*
 621     if ( brush.GetStyle() == wxBRUSHSTYLE_SOLID)
 622     {
 623     m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 624     brush.GetColour().Green() , brush.GetColour().Blue() ) );
 625     }
 626     else if ( brush.IsHatch() )
 627     {
 628     HatchStyle style = HatchStyleHorizontal;
 629     switch( brush.GetStyle() )
 630     {
 631     case wxBRUSHSTYLE_BDIAGONAL_HATCH :
 632     style = HatchStyleBackwardDiagonal;
 633     break ;
 634     case wxBRUSHSTYLE_CROSSDIAG_HATCH :
 635     style = HatchStyleDiagonalCross;
 636     break ;
 637     case wxBRUSHSTYLE_FDIAGONAL_HATCH :
 638     style = HatchStyleForwardDiagonal;
 639     break ;
 640     case wxBRUSHSTYLE_CROSS_HATCH :
 641     style = HatchStyleCross;
 642     break ;
 643     case wxBRUSHSTYLE_HORIZONTAL_HATCH :
 644     style = HatchStyleHorizontal;
 645     break ;
 646     case wxBRUSHSTYLE_VERTICAL_HATCH :
 647     style = HatchStyleVertical;
 648     break ;
 649
 650     }
 651     m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 652     brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
 653     }
 654     else
 655     {
 656     wxBitmap* bmp = brush.GetStipple();
 657     if ( bmp && bmp->Ok() )
 658     {
 659     wxDELETE( m_brushImage );
 660     m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 661     m_brush = new TextureBrush(m_brushImage);
 662     }
 663     }
 664     */
 665 }
 666
 667 wxCairoBrushData::~wxCairoBrushData ()
 668 {
 669     if (m_brushPattern)
 670         cairo_pattern_destroy(m_brushPattern);
 671 }
 672
 673 void wxCairoBrushData::Apply( wxGraphicsContext* context )
 674 {
 675     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 676     if ( m_brushPattern )
 677     {
 678         cairo_set_source(ctext,m_brushPattern);
 679     }
 680     else
 681     {
 682         cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 683     }
 684 }
 685
 686 void wxCairoBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 687         const wxColour&c1, const wxColour&c2 )
 688 {
 689     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 690     cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,c1.Red()/255.0,
 691         c1.Green()/255.0, c1.Blue()/255.0,c1.Alpha()/255.0);
 692     cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,c2.Red()/255.0,
 693         c2.Green()/255.0, c2.Blue()/255.0,c2.Alpha()/255.0);
 694     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
 695 }
 696
 697 void wxCairoBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 698         const wxColour &oColor, const wxColour &cColor )
 699 {
 700     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 701     cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,oColor.Red()/255.0,
 702         oColor.Green()/255.0, oColor.Blue()/255.0,oColor.Alpha()/255.0);
 703     cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,cColor.Red()/255.0,
 704         cColor.Green()/255.0, cColor.Blue()/255.0,cColor.Alpha()/255.0);
 705     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
 706 }
 707
 708 void wxCairoBrushData::Init()
 709 {
 710     m_brushPattern = NULL;
 711 }
 712
 713 //-----------------------------------------------------------------------------
 714 // wxCairoFontData implementation
 715 //-----------------------------------------------------------------------------
 716
 717 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 718                          const wxColour& col ) : wxGraphicsObjectRefData(renderer)
 719 {
 720     m_red = col.Red()/255.0;
 721     m_green = col.Green()/255.0;
 722     m_blue = col.Blue()/255.0;
 723     m_alpha = col.Alpha()/255.0;
 724     m_size = font.GetPointSize();
 725     m_underlined = font.GetUnderlined();
 726
 727 #ifdef __WXMAC__
 728     m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
 729 #elif defined(__WXGTK__)
 730     m_font = pango_font_description_copy( font.GetNativeFontInfo()->description );
 731 #else
 732     m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
 733     m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
 734     m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
 735 #endif
 736 }
 737
 738 wxCairoFontData::~wxCairoFontData()
 739 {
 740 #ifdef __WXMAC__
 741     cairo_font_face_destroy( m_font );
 742 #elif defined(__WXGTK__)
 743     pango_font_description_free( m_font );
 744 #else
 745 #endif
 746 }
 747
 748 void wxCairoFontData::Apply( wxGraphicsContext* context )
 749 {
 750     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 751     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 752 #ifdef __WXGTK__
 753     // the rest is done using Pango layouts
 754 #elif defined(__WXMAC__)
 755     cairo_set_font_face(ctext, m_font);
 756     cairo_set_font_size(ctext, m_size );
 757 #else
 758     cairo_select_font_face(ctext, m_fontName, m_slant, m_weights );
 759     cairo_set_font_size(ctext, m_size );
 760 #endif
 761 }
 762
 763 //-----------------------------------------------------------------------------
 764 // wxCairoPathData implementation
 765 //-----------------------------------------------------------------------------
 766
 767 wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
 768     : wxGraphicsPathData(renderer)
 769 {
 770     if (pathcontext)
 771     {
 772         m_pathContext = pathcontext;
 773     }
 774     else
 775     {
 776         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 777         m_pathContext = cairo_create(surface);
 778         cairo_surface_destroy (surface);
 779     }
 780 }
 781
 782 wxCairoPathData::~wxCairoPathData()
 783 {
 784     cairo_destroy(m_pathContext);
 785 }
 786
 787 wxGraphicsObjectRefData *wxCairoPathData::Clone() const
 788 {
 789     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 790     cairo_t* pathcontext = cairo_create(surface);
 791     cairo_surface_destroy (surface);
 792
 793     cairo_path_t* path = cairo_copy_path(m_pathContext);
 794     cairo_append_path(pathcontext, path);
 795     cairo_path_destroy(path);
 796     return new wxCairoPathData( GetRenderer() ,pathcontext);
 797 }
 798
 799
 800 void* wxCairoPathData::GetNativePath() const
 801 {
 802     return cairo_copy_path(m_pathContext) ;
 803 }
 804
 805 void wxCairoPathData::UnGetNativePath(void *p) const
 806 {
 807     cairo_path_destroy((cairo_path_t*)p);
 808 }
 809
 810 //
 811 // The Primitives
 812 //
 813
 814 void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
 815 {
 816     cairo_move_to(m_pathContext,x,y);
 817 }
 818
 819 void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
 820 {
 821     cairo_line_to(m_pathContext,x,y);
 822 }
 823
 824 void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
 825 {
 826     cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
 827     cairo_append_path(m_pathContext, p);
 828     UnGetNativePath(p);
 829 }
 830
 831 void wxCairoPathData::CloseSubpath()
 832 {
 833     cairo_close_path(m_pathContext);
 834 }
 835
 836 void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 837 {
 838     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
 839 }
 840
 841 // gets the last point of the current path, (0,0) if not yet set
 842 void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
 843 {
 844     double dx,dy;
 845     cairo_get_current_point(m_pathContext,&dx,&dy);
 846     if (x)
 847         *x = dx;
 848     if (y)
 849         *y = dy;
 850 }
 851
 852 void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 853 {
 854     // as clockwise means positive in our system (y pointing downwards)
 855     // TODO make this interpretation dependent of the
 856     // real device trans
 857     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
 858         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
 859     else
 860         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
 861 }
 862
 863 // transforms each point of this path by the matrix
 864 void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
 865 {
 866     // as we don't have a true path object, we have to apply the inverse
 867     // matrix to the context
 868     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
 869     cairo_matrix_invert( &m );
 870     cairo_transform(m_pathContext,&m);
 871 }
 872
 873 // gets the bounding box enclosing all points (possibly including control points)
 874 void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
 875 {
 876     double x1,y1,x2,y2;
 877
 878     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
 879     if ( x2 < x1 )
 880     {
 881         *x = x2;
 882         *w = x1-x2;
 883     }
 884     else
 885     {
 886         *x = x1;
 887         *w = x2-x1;
 888     }
 889
 890     if( y2 < y1 )
 891     {
 892         *y = y2;
 893         *h = y1-y2;
 894     }
 895     else
 896     {
 897         *y = y1;
 898         *h = y2-y1;
 899     }
 900 }
 901
 902 bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode WXUNUSED(fillStyle) ) const
 903 {
 904     return cairo_in_stroke( m_pathContext, x, y) != 0;
 905 }
 906
 907 //-----------------------------------------------------------------------------
 908 // wxCairoMatrixData implementation
 909 //-----------------------------------------------------------------------------
 910
 911 wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
 912     : wxGraphicsMatrixData(renderer)
 913 {
 914     if ( matrix )
 915         m_matrix = *matrix;
 916 }
 917
 918 wxCairoMatrixData::~wxCairoMatrixData()
 919 {
 920     // nothing to do
 921 }
 922
 923 wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
 924 {
 925     return new wxCairoMatrixData(GetRenderer(),&m_matrix);
 926 }
 927
 928 // concatenates the matrix
 929 void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
 930 {
 931     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
 932 }
 933
 934 // sets the matrix to the respective values
 935 void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 936                         wxDouble tx, wxDouble ty)
 937 {
 938     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
 939 }
 940
 941 // gets the component valuess of the matrix
 942 void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 943                             wxDouble* d, wxDouble* tx, wxDouble* ty) const
 944 {
 945     if (a)  *a = m_matrix.xx;
 946     if (b)  *b = m_matrix.yx;
 947     if (c)  *c = m_matrix.xy;
 948     if (d)  *d = m_matrix.yy;
 949     if (tx) *tx= m_matrix.x0;
 950     if (ty) *ty= m_matrix.y0;
 951 }
 952
 953 // makes this the inverse matrix
 954 void wxCairoMatrixData::Invert()
 955 {
 956     cairo_matrix_invert( &m_matrix );
 957 }
 958
 959 // returns true if the elements of the transformation matrix are equal ?
 960 bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 961 {
 962     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
 963     return (
 964         m_matrix.xx == tm->xx &&
 965         m_matrix.yx == tm->yx &&
 966         m_matrix.xy == tm->xy &&
 967         m_matrix.yy == tm->yy &&
 968         m_matrix.x0 == tm->x0 &&
 969         m_matrix.y0 == tm->y0 ) ;
 970 }
 971
 972 // return true if this is the identity matrix
 973 bool wxCairoMatrixData::IsIdentity() const
 974 {
 975     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
 976         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
 977 }
 978
 979 //
 980 // transformation
 981 //
 982
 983 // add the translation to this matrix
 984 void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
 985 {
 986     cairo_matrix_translate( &m_matrix, dx, dy) ;
 987 }
 988
 989 // add the scale to this matrix
 990 void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 991 {
 992     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
 993 }
 994
 995 // add the rotation to this matrix (radians)
 996 void wxCairoMatrixData::Rotate( wxDouble angle )
 997 {
 998     cairo_matrix_rotate( &m_matrix, angle) ;
 999 }
1000
1001 //
1002 // apply the transforms
1003 //
1004
1005 // applies that matrix to the point
1006 void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1007 {
1008     double lx = *x, ly = *y ;
1009     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
1010     *x = lx;
1011     *y = ly;
1012 }
1013
1014 // applies the matrix except for translations
1015 void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1016 {
1017     double lx = *dx, ly = *dy ;
1018     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
1019     *dx = lx;
1020     *dy = ly;
1021 }
1022
1023 // returns the native representation
1024 void * wxCairoMatrixData::GetNativeMatrix() const
1025 {
1026     return (void*) &m_matrix;
1027 }
1028
1029 // wxCairoBitmap implementation
1030 //-----------------------------------------------------------------------------
1031
1032 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
1033     wxGraphicsObjectRefData( renderer )
1034 {
1035     m_surface = bitmap;
1036     m_pattern = cairo_pattern_create_for_surface(m_surface);
1037 }
1038
1039 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
1040 {
1041     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
1042
1043     int bw = m_width = bmp.GetWidth();
1044     int bh = m_height = bmp.GetHeight();
1045     wxBitmap bmpSource = bmp;  // we need a non-const instance
1046     m_buffer = new unsigned char[bw*bh*4];
1047     wxUint32* data = (wxUint32*)m_buffer;
1048
1049     // Create a surface object and copy the bitmap pixel data to it.  if the
1050     // image has alpha (or a mask represented as alpha) then we'll use a
1051     // different format and iterator than if it doesn't...
1052     if (bmpSource.HasAlpha() || bmpSource.GetMask())
1053     {
1054         m_surface = cairo_image_surface_create_for_data(
1055             m_buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
1056         wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1057         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1058
1059         wxAlphaPixelData::Iterator p(pixData);
1060         for (int y=0; y<bh; y++)
1061         {
1062             wxAlphaPixelData::Iterator rowStart = p;
1063             for (int x=0; x<bw; x++)
1064             {
1065                 // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
1066                 // with alpha in the upper 8 bits, then red, then green, then
1067                 // blue. The 32-bit quantities are stored native-endian.
1068                 // Pre-multiplied alpha is used.
1069                 unsigned char alpha = p.Alpha();
1070                 if (alpha == 0)
1071                     *data = 0;
1072                 else
1073                     *data = ( alpha                      << 24
1074                               | (p.Red() * alpha/255)    << 16
1075                               | (p.Green() * alpha/255)  <<  8
1076                               | (p.Blue() * alpha/255) );
1077                 ++data;
1078                 ++p;
1079             }
1080             p = rowStart;
1081             p.OffsetY(pixData, 1);
1082         }
1083     }
1084     else  // no alpha
1085     {
1086         m_surface = cairo_image_surface_create_for_data(
1087             m_buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
1088         wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1089         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1090
1091         wxNativePixelData::Iterator p(pixData);
1092         for (int y=0; y<bh; y++)
1093         {
1094             wxNativePixelData::Iterator rowStart = p;
1095             for (int x=0; x<bw; x++)
1096             {
1097                 // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
1098                 // the upper 8 bits unused. Red, Green, and Blue are stored in
1099                 // the remaining 24 bits in that order.  The 32-bit quantities
1100                 // are stored native-endian.
1101                 *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
1102                 ++data;
1103                 ++p;
1104             }
1105             p = rowStart;
1106             p.OffsetY(pixData, 1);
1107         }
1108     }
1109     m_pattern = cairo_pattern_create_for_surface(m_surface);
1110 }
1111
1112 wxCairoBitmapData::~wxCairoBitmapData()
1113 {
1114     if (m_pattern)
1115         cairo_pattern_destroy(m_pattern);
1116
1117     if (m_surface)
1118         cairo_surface_destroy(m_surface);
1119
1120     delete [] m_buffer;
1121 }
1122
1123
1124
1125 //-----------------------------------------------------------------------------
1126 // wxCairoContext implementation
1127 //-----------------------------------------------------------------------------
1128
1129 class wxCairoOffsetHelper
1130 {
1131 public :
1132     wxCairoOffsetHelper( cairo_t* ctx , bool offset )
1133     {
1134         m_ctx = ctx;
1135         m_offset = offset;
1136         if ( m_offset )
1137              cairo_translate( m_ctx, 0.5, 0.5 );
1138     }
1139     ~wxCairoOffsetHelper( )
1140     {
1141         if ( m_offset )
1142             cairo_translate( m_ctx, -0.5, -0.5 );
1143     }
1144 public :
1145     cairo_t* m_ctx;
1146     bool m_offset;
1147 } ;
1148
1149 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
1150 : wxGraphicsContext(renderer)
1151 {
1152 #ifdef __WXGTK20__
1153     const wxDCImpl *impl = dc.GetImpl();
1154     Init( (cairo_t*) impl->GetCairoContext() );
1155
1156     wxPoint org = dc.GetDeviceOrigin();
1157     cairo_translate( m_context, org.x, org.y );
1158
1159     double sx,sy;
1160     dc.GetUserScale( &sx, &sy );
1161     cairo_scale( m_context, sx, sy );
1162
1163     org = dc.GetLogicalOrigin();
1164     cairo_translate( m_context, -org.x, -org.y );
1165 #endif
1166 }
1167
1168 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
1169 : wxGraphicsContext(renderer)
1170 {
1171 #ifdef __WXGTK20__
1172     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1173     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1174
1175 #if 0
1176     wxGraphicsMatrix matrix = CreateMatrix();
1177
1178     wxPoint org = dc.GetDeviceOrigin();
1179     matrix.Translate( org.x, org.y );
1180
1181     org = dc.GetLogicalOrigin();
1182     matrix.Translate( -org.x, -org.y );
1183
1184     double sx,sy;
1185     dc.GetUserScale( &sx, &sy );
1186     matrix.Scale( sx, sy );
1187
1188     ConcatTransform( matrix );
1189 #endif
1190 #endif
1191
1192 #ifdef __WXMAC__
1193     int width, height;
1194     dc.GetSize( &width, &height );
1195     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1196     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1197     Init( cairo_create( surface ) );
1198     cairo_surface_destroy( surface );
1199 #endif
1200 }
1201
1202 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
1203 : wxGraphicsContext(renderer)
1204 {
1205 #ifdef __WXGTK20__
1206     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1207     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1208
1209 #if 0
1210     wxGraphicsMatrix matrix = CreateMatrix();
1211
1212     wxPoint org = dc.GetDeviceOrigin();
1213     matrix.Translate( org.x, org.y );
1214
1215     org = dc.GetLogicalOrigin();
1216     matrix.Translate( -org.x, -org.y );
1217
1218     double sx,sy;
1219     dc.GetUserScale( &sx, &sy );
1220     matrix.Scale( sx, sy );
1221
1222     ConcatTransform( matrix );
1223 #endif
1224 #endif
1225
1226 #ifdef __WXMAC__
1227     int width, height;
1228     dc.GetSize( &width, &height );
1229     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1230     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1231     Init( cairo_create( surface ) );
1232     cairo_surface_destroy( surface );
1233 #endif
1234 }
1235
1236 #ifdef __WXGTK20__
1237 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
1238 : wxGraphicsContext(renderer)
1239 {
1240     Init( gdk_cairo_create( drawable ) );
1241 }
1242 #endif
1243
1244 #ifdef __WXMSW__
1245 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
1246 : wxGraphicsContext(renderer)
1247 {
1248     m_mswSurface = cairo_win32_surface_create(handle);
1249     m_context = cairo_create(m_mswSurface);
1250     PushState();
1251     PushState();
1252 }
1253 #endif
1254
1255
1256 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1257 : wxGraphicsContext(renderer)
1258 {
1259     Init( context );
1260 }
1261
1262 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1263 : wxGraphicsContext(renderer)
1264 {
1265 #ifdef __WXGTK__
1266     // something along these lines (copied from dcclient)
1267
1268     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1269     // code should still be able to create wxClientDCs for them, so we will
1270     // use the parent window here then.
1271     if (window->m_wxwindow == NULL)
1272     {
1273         window = window->GetParent();
1274     }
1275
1276     wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
1277
1278     Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
1279 #endif
1280 }
1281
1282 wxCairoContext::~wxCairoContext()
1283 {
1284     if ( m_context )
1285     {
1286         PopState();
1287 #ifdef __WXMSW__
1288     m_mswSurface = cairo_win32_surface_create((HDC)window->GetHandle());
1289     m_context = cairo_create(m_mswSurface);
1290 #endif
1291         PopState();
1292         cairo_destroy(m_context);
1293     }
1294 #ifdef __WXMSW__
1295     if ( m_mswSurface )
1296         cairo_surface_destroy(m_mswSurface);
1297 #endif
1298 }
1299
1300 void wxCairoContext::Init(cairo_t *context)
1301 {
1302     m_context = context ;
1303     PushState();
1304     PushState();
1305 }
1306
1307
1308 void wxCairoContext::Clip( const wxRegion& region )
1309 {
1310     // Create a path with all the rectangles in the region
1311     wxGraphicsPath path = GetRenderer()->CreatePath();
1312     wxRegionIterator ri(region);
1313     while (ri)
1314     {
1315         path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
1316         ++ri;
1317     }
1318
1319     // Put it in the context
1320     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1321     cairo_append_path(m_context, cp);
1322
1323     // clip to that path
1324     cairo_clip(m_context);
1325     path.UnGetNativePath(cp);
1326 }
1327
1328 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1329 {
1330     // Create a path with this rectangle
1331     wxGraphicsPath path = GetRenderer()->CreatePath();
1332     path.AddRectangle(x,y,w,h);
1333
1334     // Put it in the context
1335     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1336     cairo_append_path(m_context, cp);
1337
1338     // clip to that path
1339     cairo_clip(m_context);
1340     path.UnGetNativePath(cp);
1341 }
1342
1343 void wxCairoContext::ResetClip()
1344 {
1345     cairo_reset_clip(m_context);
1346 }
1347
1348
1349 void wxCairoContext::StrokePath( const wxGraphicsPath& path )
1350 {
1351     if ( !m_pen.IsNull() )
1352     {
1353         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1354         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1355         cairo_append_path(m_context,cp);
1356         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1357         cairo_stroke(m_context);
1358         path.UnGetNativePath(cp);
1359     }
1360 }
1361
1362 void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1363 {
1364     if ( !m_brush.IsNull() )
1365     {
1366         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1367         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1368         cairo_append_path(m_context,cp);
1369         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1370         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1371         cairo_fill(m_context);
1372         path.UnGetNativePath(cp);
1373     }
1374 }
1375
1376 void wxCairoContext::Rotate( wxDouble angle )
1377 {
1378     cairo_rotate(m_context,angle);
1379 }
1380
1381 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1382 {
1383     cairo_translate(m_context,dx,dy);
1384 }
1385
1386 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1387 {
1388     cairo_scale(m_context,xScale,yScale);
1389 }
1390
1391 // concatenates this transform with the current transform of this context
1392 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1393 {
1394     cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
1395 }
1396
1397 // sets the transform of this context
1398 void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
1399 {
1400     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
1401 }
1402
1403 // gets the matrix of this context
1404 wxGraphicsMatrix wxCairoContext::GetTransform() const
1405 {
1406     wxGraphicsMatrix matrix = CreateMatrix();
1407     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
1408     return matrix;
1409 }
1410
1411
1412
1413 void wxCairoContext::PushState()
1414 {
1415     cairo_save(m_context);
1416 }
1417
1418 void wxCairoContext::PopState()
1419 {
1420     cairo_restore(m_context);
1421 }
1422
1423 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1424 {
1425     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1426     DrawBitmap(bitmap, x, y, w, h);
1427
1428 }
1429
1430 void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1431 {
1432     PushState();
1433
1434     // In case we're scaling the image by using a width and height different
1435     // than the bitmap's size create a pattern transformation on the surface and
1436     // draw the transformed pattern.
1437     wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
1438     cairo_pattern_t* pattern = data->GetCairoPattern();
1439     wxSize size = data->GetSize();
1440
1441     wxDouble scaleX = w / size.GetWidth();
1442     wxDouble scaleY = h / size.GetHeight();
1443     cairo_scale(m_context, scaleX, scaleY);
1444
1445     // prepare to draw the image
1446     cairo_translate(m_context, x, y);
1447     cairo_set_source(m_context, pattern);
1448     // use the original size here since the context is scaled already...
1449     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
1450     // fill the rectangle using the pattern
1451     cairo_fill(m_context);
1452
1453     PopState();
1454 }
1455
1456 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1457 {
1458     // An icon is a bitmap on wxGTK, so do this the easy way.  When we want to
1459     // start using the Cairo backend on other platforms then we may need to
1460     // fiddle with this...
1461     DrawBitmap(icon, x, y, w, h);
1462 }
1463
1464
1465 void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
1466 {
1467     wxCHECK_RET( !m_font.IsNull(),
1468                  wxT("wxCairoContext::DrawText - no valid font set") );
1469
1470     if ( str.empty())
1471         return;
1472
1473     const wxCharBuffer data = str.utf8_str();
1474     if ( !data )
1475         return;
1476
1477     ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
1478
1479 #ifdef __WXGTK__
1480     size_t datalen = strlen(data);
1481
1482     PangoLayout *layout = pango_cairo_create_layout (m_context);
1483     wxCairoFontData* font_data = (wxCairoFontData*) m_font.GetRefData();
1484     pango_layout_set_font_description( layout, font_data->GetFont());
1485     pango_layout_set_text(layout, data, datalen);
1486
1487     if (font_data->GetUnderlined())
1488     {
1489         PangoAttrList *attrs = pango_attr_list_new();
1490         PangoAttribute *attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1491         pango_attr_list_insert(attrs, attr);
1492         pango_layout_set_attributes(layout, attrs);
1493         pango_attr_list_unref(attrs);
1494     }
1495
1496     cairo_move_to(m_context, x, y);
1497     pango_cairo_show_layout (m_context, layout);
1498
1499     g_object_unref (layout);
1500 #else
1501     // Cairo's x,y for drawing text is at the baseline, so we need to adjust
1502     // the position we move to by the ascent.
1503     cairo_font_extents_t fe;
1504     cairo_font_extents(m_context, &fe);
1505     cairo_move_to(m_context, x, y+fe.ascent);
1506
1507     cairo_show_text(m_context, data);
1508 #endif
1509 }
1510
1511 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1512                                     wxDouble *descent, wxDouble *externalLeading ) const
1513 {
1514     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
1515
1516     if ( width )
1517         *width = 0;
1518     if ( height )
1519         *height = 0;
1520     if ( descent )
1521         *descent = 0;
1522     if ( externalLeading )
1523         *externalLeading = 0;
1524
1525     if ( str.empty())
1526         return;
1527
1528 #ifdef __WXGTK__
1529     int w, h;
1530
1531     PangoLayout *layout = pango_cairo_create_layout (m_context);
1532     pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
1533     const wxCharBuffer data = str.utf8_str();
1534     if ( !data )
1535     {
1536         return;
1537     }
1538     pango_layout_set_text( layout, data, strlen(data) );
1539     pango_layout_get_pixel_size (layout, &w, &h);
1540     if ( width )
1541         *width = w;
1542     if ( height )
1543         *height = h;
1544     if (descent)
1545     {
1546         PangoLayoutIter *iter = pango_layout_get_iter(layout);
1547         int baseline = pango_layout_iter_get_baseline(iter);
1548         pango_layout_iter_free(iter);
1549         *descent = h - PANGO_PIXELS(baseline);
1550     }
1551     g_object_unref (layout);
1552 #else
1553     ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this);
1554
1555     if (width)
1556     {
1557         const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
1558         cairo_text_extents_t te;
1559         cairo_text_extents(m_context, buf, &te);
1560         *width = te.width;
1561     }
1562
1563     if (height || descent || externalLeading)
1564     {
1565         cairo_font_extents_t fe;
1566         cairo_font_extents(m_context, &fe);
1567
1568         // some backends have negative descents
1569
1570         if ( fe.descent < 0 )
1571             fe.descent = -fe.descent;
1572
1573         if ( fe.height < (fe.ascent + fe.descent ) )
1574         {
1575             // some backends are broken re height ... (eg currently ATSUI)
1576             fe.height = fe.ascent + fe.descent;
1577         }
1578
1579         if (height)
1580             *height = fe.height;
1581         if ( descent )
1582             *descent = fe.descent;
1583         if ( externalLeading )
1584             *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
1585     }
1586 #endif
1587 }
1588
1589 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1590 {
1591     widths.Empty();
1592     widths.Add(0, text.length());
1593
1594     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
1595
1596     if (text.empty())
1597         return;
1598
1599     // TODO
1600 }
1601
1602 void * wxCairoContext::GetNativeContext()
1603 {
1604     return m_context;
1605 }
1606
1607 bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
1608 {
1609     if (m_antialias == antialias)
1610         return true;
1611
1612     m_antialias = antialias;
1613
1614     cairo_antialias_t antialiasMode;
1615     switch (antialias)
1616     {
1617         case wxANTIALIAS_DEFAULT:
1618             antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
1619             break;
1620         case wxANTIALIAS_NONE:
1621             antialiasMode = CAIRO_ANTIALIAS_NONE;
1622             break;
1623         default:
1624             return false;
1625     }
1626     cairo_set_antialias(m_context, antialiasMode);
1627     return true;
1628 }
1629
1630 bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
1631 {
1632     if ( m_composition == op )
1633         return true;
1634
1635     m_composition = op;
1636     cairo_operator_t cop;
1637     switch (op)
1638     {
1639         case wxCOMPOSITION_CLEAR:
1640             cop = CAIRO_OPERATOR_CLEAR;
1641             break;
1642         case wxCOMPOSITION_SOURCE:
1643             cop = CAIRO_OPERATOR_SOURCE;
1644             break;
1645         case wxCOMPOSITION_OVER:
1646             cop = CAIRO_OPERATOR_OVER;
1647             break;
1648         case wxCOMPOSITION_IN:
1649             cop = CAIRO_OPERATOR_IN;
1650             break;
1651         case wxCOMPOSITION_OUT:
1652             cop = CAIRO_OPERATOR_OUT;
1653             break;
1654         case wxCOMPOSITION_ATOP:
1655             cop = CAIRO_OPERATOR_ATOP;
1656             break;
1657         case wxCOMPOSITION_DEST:
1658             cop = CAIRO_OPERATOR_DEST;
1659             break;
1660         case wxCOMPOSITION_DEST_OVER:
1661             cop = CAIRO_OPERATOR_DEST_OVER;
1662             break;
1663         case wxCOMPOSITION_DEST_IN:
1664             cop = CAIRO_OPERATOR_DEST_IN;
1665             break;
1666         case wxCOMPOSITION_DEST_OUT:
1667             cop = CAIRO_OPERATOR_DEST_OUT;
1668             break;
1669         case wxCOMPOSITION_DEST_ATOP:
1670             cop = CAIRO_OPERATOR_DEST_ATOP;
1671             break;
1672         case wxCOMPOSITION_XOR:
1673             cop = CAIRO_OPERATOR_XOR;
1674             break;
1675         case wxCOMPOSITION_ADD:
1676             cop = CAIRO_OPERATOR_ADD;
1677             break;
1678         default:
1679             return false;
1680     }
1681     cairo_set_operator(m_context, cop);
1682     return true;
1683 }
1684
1685 void wxCairoContext::BeginLayer(wxDouble opacity)
1686 {
1687     m_layerOpacities.push_back(opacity);
1688     cairo_push_group(m_context);
1689 }
1690
1691 void wxCairoContext::EndLayer()
1692 {
1693     float opacity = m_layerOpacities.back();
1694     m_layerOpacities.pop_back();
1695     cairo_pop_group_to_source(m_context);
1696     cairo_paint_with_alpha(m_context,opacity);
1697 }
1698
1699 //-----------------------------------------------------------------------------
1700 // wxCairoRenderer declaration
1701 //-----------------------------------------------------------------------------
1702
1703 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
1704 {
1705 public :
1706     wxCairoRenderer() {}
1707
1708     virtual ~wxCairoRenderer() {}
1709
1710     // Context
1711
1712     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1713     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
1714     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
1715
1716     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1717
1718     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1719
1720     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1721
1722     virtual wxGraphicsContext * CreateMeasuringContext();
1723
1724     // Path
1725
1726     virtual wxGraphicsPath CreatePath();
1727
1728     // Matrix
1729
1730     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1731         wxDouble tx=0.0, wxDouble ty=0.0);
1732
1733
1734     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1735
1736     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1737
1738     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1739     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1740         const wxColour&c1, const wxColour&c2) ;
1741
1742     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1743     // with radius r and color cColor
1744     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1745         const wxColour &oColor, const wxColour &cColor) ;
1746
1747     // sets the font
1748     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1749
1750     // create a native bitmap representation
1751     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
1752
1753     // create a graphics bitmap from a native bitmap
1754     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
1755
1756     // create a subimage from a native image representation
1757     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
1758
1759 private :
1760     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
1761 } ;
1762
1763 //-----------------------------------------------------------------------------
1764 // wxCairoRenderer implementation
1765 //-----------------------------------------------------------------------------
1766
1767 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
1768
1769 static wxCairoRenderer gs_cairoGraphicsRenderer;
1770 // temporary hack to allow creating a cairo context on any platform
1771 extern wxGraphicsRenderer* gCairoRenderer;
1772 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
1773
1774 #ifdef __WXGTK__
1775 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1776 {
1777     return &gs_cairoGraphicsRenderer;
1778 }
1779 #endif
1780
1781 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
1782 {
1783     return new wxCairoContext(this,dc);
1784 }
1785
1786 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
1787 {
1788     return new wxCairoContext(this,dc);
1789 }
1790
1791 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
1792 {
1793 #ifdef __WXGTK20__
1794     const wxDCImpl *impl = dc.GetImpl();
1795     cairo_t* context = (cairo_t*) impl->GetCairoContext();
1796     if (context)
1797        return new wxCairoContext(this,dc);
1798     else
1799 #endif
1800        return NULL;
1801 }
1802
1803 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
1804 {
1805 #ifdef __WXMSW__
1806     return new wxCairoContext(this,(HDC)context);
1807 #endif
1808 #ifdef __WXGTK__
1809     return new wxCairoContext(this,(cairo_t*)context);
1810 #endif
1811 }
1812
1813
1814 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
1815 {
1816 #ifdef __WXGTK__
1817     return new wxCairoContext(this,(GdkDrawable*)window);
1818 #else
1819     return NULL;
1820 #endif
1821 }
1822
1823 wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
1824 {
1825 #ifdef __WXGTK__
1826     return CreateContextFromNativeWindow(gdk_get_default_root_window());
1827 #endif
1828     return NULL;
1829     // TODO
1830 }
1831
1832 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
1833 {
1834     return new wxCairoContext(this, window );
1835 }
1836
1837 // Path
1838
1839 wxGraphicsPath wxCairoRenderer::CreatePath()
1840 {
1841     wxGraphicsPath path;
1842     path.SetRefData( new wxCairoPathData(this) );
1843     return path;
1844 }
1845
1846
1847 // Matrix
1848
1849 wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1850                                                 wxDouble tx, wxDouble ty)
1851
1852 {
1853     wxGraphicsMatrix m;
1854     wxCairoMatrixData* data = new wxCairoMatrixData( this );
1855     data->Set( a,b,c,d,tx,ty ) ;
1856     m.SetRefData(data);
1857     return m;
1858 }
1859
1860 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
1861 {
1862     if ( !pen.Ok() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT )
1863         return wxNullGraphicsPen;
1864     else
1865     {
1866         wxGraphicsPen p;
1867         p.SetRefData(new wxCairoPenData( this, pen ));
1868         return p;
1869     }
1870 }
1871
1872 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
1873 {
1874     if ( !brush.Ok() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT )
1875         return wxNullGraphicsBrush;
1876     else
1877     {
1878         wxGraphicsBrush p;
1879         p.SetRefData(new wxCairoBrushData( this, brush ));
1880         return p;
1881     }
1882 }
1883
1884 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1885 wxGraphicsBrush wxCairoRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1886                                                                       const wxColour&c1, const wxColour&c2)
1887 {
1888     wxGraphicsBrush p;
1889     wxCairoBrushData* d = new wxCairoBrushData( this );
1890     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
1891     p.SetRefData(d);
1892     return p;
1893 }
1894
1895 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1896 // with radius r and color cColor
1897 wxGraphicsBrush wxCairoRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1898                                                                       const wxColour &oColor, const wxColour &cColor)
1899 {
1900     wxGraphicsBrush p;
1901     wxCairoBrushData* d = new wxCairoBrushData( this );
1902     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
1903     p.SetRefData(d);
1904     return p;
1905 }
1906
1907 // sets the font
1908 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
1909 {
1910     if ( font.Ok() )
1911     {
1912         wxGraphicsFont p;
1913         p.SetRefData(new wxCairoFontData( this , font, col ));
1914         return p;
1915     }
1916     else
1917         return wxNullGraphicsFont;
1918 }
1919
1920 wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
1921 {
1922     if ( bmp.Ok() )
1923     {
1924         wxGraphicsBitmap p;
1925         p.SetRefData(new wxCairoBitmapData( this , bmp ));
1926         return p;
1927     }
1928     else
1929         return wxNullGraphicsBitmap;
1930 }
1931
1932 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
1933 {
1934     if ( bitmap != NULL )
1935     {
1936         wxGraphicsBitmap p;
1937         p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
1938         return p;
1939     }
1940     else
1941         return wxNullGraphicsBitmap;
1942 }
1943
1944 wxGraphicsBitmap
1945 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
1946                                  wxDouble WXUNUSED(x),
1947                                  wxDouble WXUNUSED(y),
1948                                  wxDouble WXUNUSED(w),
1949                                  wxDouble WXUNUSED(h))
1950 {
1951     wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
1952     return wxNullGraphicsBitmap;
1953 }
1954
1955 #endif  // wxUSE_CAIRO
1956
1957 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
1958 {
1959 #if wxUSE_CAIRO
1960     return &gs_cairoGraphicsRenderer;
1961 #else
1962     return NULL;
1963 #endif
1964 }
1965
1966 #endif // wxUSE_GRAPHICS_CONTEXT