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