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
 252     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 253                                    wxDouble x2, wxDouble y2,
 254                                    const wxGraphicsGradientStops& stops);
 255     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 256                                    wxDouble xc, wxDouble yc, wxDouble radius,
 257                                    const wxGraphicsGradientStops& stops);
 258
 259 protected:
 260     virtual void Init();
 261
 262     // common part of Create{Linear,Radial}GradientBrush()
 263     void AddGradientStops(const wxGraphicsGradientStops& stops);
 264
 265 private :
 266     double m_red;
 267     double m_green;
 268     double m_blue;
 269     double m_alpha;
 270
 271     cairo_pattern_t* m_brushPattern;
 272 };
 273
 274 class wxCairoFontData : public wxGraphicsObjectRefData
 275 {
 276 public:
 277     wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 278     ~wxCairoFontData();
 279
 280     virtual void Apply( wxGraphicsContext* context );
 281 #ifdef __WXGTK__
 282     const PangoFontDescription* GetFont() const { return m_font; }
 283     bool GetUnderlined() const { return m_underlined; }
 284 #endif
 285 private :
 286     double m_size;
 287     bool m_underlined;
 288     double m_red;
 289     double m_green;
 290     double m_blue;
 291     double m_alpha;
 292 #ifdef __WXMAC__
 293     cairo_font_face_t *m_font;
 294 #elif defined(__WXGTK__)
 295     PangoFontDescription* m_font;
 296 #else
 297     wxCharBuffer m_fontName;
 298     cairo_font_slant_t m_slant;
 299     cairo_font_weight_t m_weight;
 300 #endif
 301 #ifdef __WXMSW__
 302     wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
 303 #endif
 304 };
 305
 306 class wxCairoBitmapData : public wxGraphicsObjectRefData
 307 {
 308 public:
 309     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
 310     wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
 311     ~wxCairoBitmapData();
 312
 313     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
 314     virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
 315     virtual wxSize GetSize() { return wxSize(m_width, m_height); }
 316 private :
 317     cairo_surface_t* m_surface;
 318     cairo_pattern_t* m_pattern;
 319     int m_width;
 320     int m_height;
 321     unsigned char* m_buffer;
 322 };
 323
 324 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 325 {
 326 public:
 327     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 328     wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
 329     wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
 330 #ifdef __WXGTK__
 331     wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable );
 332 #endif
 333     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 334     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 335     wxCairoContext();
 336     virtual ~wxCairoContext();
 337
 338     virtual bool ShouldOffset() const
 339     {
 340         int penwidth = 0 ;
 341         if ( !m_pen.IsNull() )
 342         {
 343             penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
 344             if ( penwidth == 0 )
 345                 penwidth = 1;
 346         }
 347         return ( penwidth % 2 ) == 1;
 348     }
 349
 350     virtual void Clip( const wxRegion &region );
 351 #ifdef __WXMSW__
 352     cairo_surface_t* m_mswSurface;
 353 #endif
 354
 355     // clips drawings to the rect
 356     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 357
 358     // resets the clipping to original extent
 359     virtual void ResetClip();
 360
 361     virtual void * GetNativeContext();
 362
 363     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 364
 365     virtual bool SetCompositionMode(wxCompositionMode op);
 366
 367     virtual void BeginLayer(wxDouble opacity);
 368
 369     virtual void EndLayer();
 370
 371     virtual void StrokePath( const wxGraphicsPath& p );
 372     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
 373
 374     virtual void Translate( wxDouble dx , wxDouble dy );
 375     virtual void Scale( wxDouble xScale , wxDouble yScale );
 376     virtual void Rotate( wxDouble angle );
 377
 378     // concatenates this transform with the current transform of this context
 379     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 380
 381     // sets the transform of this context
 382     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 383
 384     // gets the matrix of this context
 385     virtual wxGraphicsMatrix GetTransform() const;
 386
 387     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 388     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 389     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 390     virtual void PushState();
 391     virtual void PopState();
 392
 393     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 394                                 wxDouble *descent, wxDouble *externalLeading ) const;
 395     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 396
 397 protected:
 398     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
 399
 400 private:
 401     void Init(cairo_t *context);
 402
 403     cairo_t* m_context;
 404
 405     wxVector<float> m_layerOpacities;
 406
 407     wxDECLARE_NO_COPY_CLASS(wxCairoContext);
 408 };
 409
 410 //-----------------------------------------------------------------------------
 411 // wxCairoPenData implementation
 412 //-----------------------------------------------------------------------------
 413
 414 wxCairoPenData::~wxCairoPenData()
 415 {
 416     delete[] m_userLengths;
 417 }
 418
 419 void wxCairoPenData::Init()
 420 {
 421     m_lengths = NULL;
 422     m_userLengths = NULL;
 423     m_width = 0;
 424     m_count = 0;
 425 }
 426
 427 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 428 : wxGraphicsObjectRefData(renderer)
 429 {
 430     Init();
 431     m_pen = pen;
 432     m_width = m_pen.GetWidth();
 433     if (m_width <= 0.0)
 434         m_width = 0.1;
 435
 436     m_red = m_pen.GetColour().Red()/255.0;
 437     m_green = m_pen.GetColour().Green()/255.0;
 438     m_blue = m_pen.GetColour().Blue()/255.0;
 439     m_alpha = m_pen.GetColour().Alpha()/255.0;
 440
 441     switch ( m_pen.GetCap() )
 442     {
 443     case wxCAP_ROUND :
 444         m_cap = CAIRO_LINE_CAP_ROUND;
 445         break;
 446
 447     case wxCAP_PROJECTING :
 448         m_cap = CAIRO_LINE_CAP_SQUARE;
 449         break;
 450
 451     case wxCAP_BUTT :
 452         m_cap = CAIRO_LINE_CAP_BUTT;
 453         break;
 454
 455     default :
 456         m_cap = CAIRO_LINE_CAP_BUTT;
 457         break;
 458     }
 459
 460     switch ( m_pen.GetJoin() )
 461     {
 462     case wxJOIN_BEVEL :
 463         m_join = CAIRO_LINE_JOIN_BEVEL;
 464         break;
 465
 466     case wxJOIN_MITER :
 467         m_join = CAIRO_LINE_JOIN_MITER;
 468         break;
 469
 470     case wxJOIN_ROUND :
 471         m_join = CAIRO_LINE_JOIN_ROUND;
 472         break;
 473
 474     default :
 475         m_join = CAIRO_LINE_JOIN_MITER;
 476         break;
 477     }
 478
 479     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 480     const double dotted[] =
 481     {
 482         dashUnit , dashUnit + 2.0
 483     };
 484     static const double short_dashed[] =
 485     {
 486         9.0 , 6.0
 487     };
 488     static const double dashed[] =
 489     {
 490         19.0 , 9.0
 491     };
 492     static const double dotted_dashed[] =
 493     {
 494         9.0 , 6.0 , 3.0 , 3.0
 495     };
 496
 497     switch ( m_pen.GetStyle() )
 498     {
 499     case wxPENSTYLE_SOLID :
 500         break;
 501
 502     case wxPENSTYLE_DOT :
 503         m_count = WXSIZEOF(dotted);
 504         m_userLengths = new double[ m_count ] ;
 505         memcpy( m_userLengths, dotted, sizeof(dotted) );
 506         m_lengths = m_userLengths;
 507         break;
 508
 509     case wxPENSTYLE_LONG_DASH :
 510         m_lengths = dashed ;
 511         m_count = WXSIZEOF(dashed);
 512         break;
 513
 514     case wxPENSTYLE_SHORT_DASH :
 515         m_lengths = short_dashed ;
 516         m_count = WXSIZEOF(short_dashed);
 517         break;
 518
 519     case wxPENSTYLE_DOT_DASH :
 520         m_lengths = dotted_dashed ;
 521         m_count = WXSIZEOF(dotted_dashed);
 522         break;
 523
 524     case wxPENSTYLE_USER_DASH :
 525         {
 526             wxDash *wxdashes ;
 527             m_count = m_pen.GetDashes( &wxdashes ) ;
 528             if ((wxdashes != NULL) && (m_count > 0))
 529             {
 530                 m_userLengths = new double[m_count] ;
 531                 for ( int i = 0 ; i < m_count ; ++i )
 532                 {
 533                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 534
 535                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 536                         m_userLengths[i] = dashUnit + 2.0 ;
 537                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 538                         m_userLengths[i] = dashUnit ;
 539                 }
 540             }
 541             m_lengths = m_userLengths ;
 542         }
 543         break;
 544     case wxPENSTYLE_STIPPLE :
 545         {
 546             /*
 547             wxBitmap* bmp = pen.GetStipple();
 548             if ( bmp && bmp->Ok() )
 549             {
 550             wxDELETE( m_penImage );
 551             wxDELETE( m_penBrush );
 552             m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 553             m_penBrush = new TextureBrush(m_penImage);
 554             m_pen->SetBrush( m_penBrush );
 555             }
 556             */
 557         }
 558         break;
 559     default :
 560         if ( m_pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
 561             && m_pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
 562         {
 563             /*
 564             wxDELETE( m_penBrush );
 565             HatchStyle style = HatchStyleHorizontal;
 566             switch( pen.GetStyle() )
 567             {
 568             case wxPENSTYLE_BDIAGONAL_HATCH :
 569             style = HatchStyleBackwardDiagonal;
 570             break ;
 571             case wxPENSTYLE_CROSSDIAG_HATCH :
 572             style = HatchStyleDiagonalCross;
 573             break ;
 574             case wxPENSTYLE_FDIAGONAL_HATCH :
 575             style = HatchStyleForwardDiagonal;
 576             break ;
 577             case wxPENSTYLE_CROSS_HATCH :
 578             style = HatchStyleCross;
 579             break ;
 580             case wxPENSTYLE_HORIZONTAL_HATCH :
 581             style = HatchStyleHorizontal;
 582             break ;
 583             case wxPENSTYLE_VERTICAL_HATCH :
 584             style = HatchStyleVertical;
 585             break ;
 586
 587             }
 588             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 589             pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
 590             m_pen->SetBrush( m_penBrush )
 591             */
 592         }
 593         break;
 594     }
 595 }
 596
 597 void wxCairoPenData::Apply( wxGraphicsContext* context )
 598 {
 599     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 600     cairo_set_line_width(ctext,m_width);
 601     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 602     cairo_set_line_cap(ctext,m_cap);
 603     cairo_set_line_join(ctext,m_join);
 604     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 605 }
 606
 607 //-----------------------------------------------------------------------------
 608 // wxCairoBrushData implementation
 609 //-----------------------------------------------------------------------------
 610
 611 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 612   : wxGraphicsObjectRefData( renderer )
 613 {
 614     Init();
 615 }
 616
 617 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush )
 618   : wxGraphicsObjectRefData(renderer)
 619 {
 620     Init();
 621
 622     m_red = brush.GetColour().Red()/255.0;
 623     m_green = brush.GetColour().Green()/255.0;
 624     m_blue = brush.GetColour().Blue()/255.0;
 625     m_alpha = brush.GetColour().Alpha()/255.0;
 626     /*
 627     if ( brush.GetStyle() == wxBRUSHSTYLE_SOLID)
 628     {
 629     m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 630     brush.GetColour().Green() , brush.GetColour().Blue() ) );
 631     }
 632     else if ( brush.IsHatch() )
 633     {
 634     HatchStyle style = HatchStyleHorizontal;
 635     switch( brush.GetStyle() )
 636     {
 637     case wxBRUSHSTYLE_BDIAGONAL_HATCH :
 638     style = HatchStyleBackwardDiagonal;
 639     break ;
 640     case wxBRUSHSTYLE_CROSSDIAG_HATCH :
 641     style = HatchStyleDiagonalCross;
 642     break ;
 643     case wxBRUSHSTYLE_FDIAGONAL_HATCH :
 644     style = HatchStyleForwardDiagonal;
 645     break ;
 646     case wxBRUSHSTYLE_CROSS_HATCH :
 647     style = HatchStyleCross;
 648     break ;
 649     case wxBRUSHSTYLE_HORIZONTAL_HATCH :
 650     style = HatchStyleHorizontal;
 651     break ;
 652     case wxBRUSHSTYLE_VERTICAL_HATCH :
 653     style = HatchStyleVertical;
 654     break ;
 655
 656     }
 657     m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 658     brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
 659     }
 660     else
 661     {
 662     wxBitmap* bmp = brush.GetStipple();
 663     if ( bmp && bmp->Ok() )
 664     {
 665     wxDELETE( m_brushImage );
 666     m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 667     m_brush = new TextureBrush(m_brushImage);
 668     }
 669     }
 670     */
 671 }
 672
 673 wxCairoBrushData::~wxCairoBrushData ()
 674 {
 675     if (m_brushPattern)
 676         cairo_pattern_destroy(m_brushPattern);
 677 }
 678
 679 void wxCairoBrushData::Apply( wxGraphicsContext* context )
 680 {
 681     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 682     if ( m_brushPattern )
 683     {
 684         cairo_set_source(ctext,m_brushPattern);
 685     }
 686     else
 687     {
 688         cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 689     }
 690 }
 691
 692 void wxCairoBrushData::AddGradientStops(const wxGraphicsGradientStops& stops)
 693 {
 694     // loop over all the stops, they include the beginning and ending ones
 695     const unsigned numStops = stops.GetCount();
 696     for ( unsigned n = 0; n < numStops; n++ )
 697     {
 698         const wxGraphicsGradientStop stop = stops.Item(n);
 699
 700         const wxColour col = stop.GetColour();
 701
 702         cairo_pattern_add_color_stop_rgba
 703         (
 704             m_brushPattern,
 705             stop.GetPosition(),
 706             col.Red()/255.0,
 707             col.Green()/255.0,
 708             col.Blue()/255.0,
 709             col.Alpha()/255.0
 710         );
 711     }
 712
 713     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS,
 714                  wxT("Couldn't create cairo pattern"));
 715 }
 716
 717 void
 718 wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 719                                             wxDouble x2, wxDouble y2,
 720                                             const wxGraphicsGradientStops& stops)
 721 {
 722     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 723
 724     AddGradientStops(stops);
 725 }
 726
 727 void
 728 wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 729                                             wxDouble xc, wxDouble yc,
 730                                             wxDouble radius,
 731                                             const wxGraphicsGradientStops& stops)
 732 {
 733     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 734
 735     AddGradientStops(stops);
 736 }
 737
 738 void wxCairoBrushData::Init()
 739 {
 740     m_brushPattern = NULL;
 741 }
 742
 743 //-----------------------------------------------------------------------------
 744 // wxCairoFontData implementation
 745 //-----------------------------------------------------------------------------
 746
 747 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 748                          const wxColour& col ) : wxGraphicsObjectRefData(renderer)
 749 {
 750     m_red = col.Red()/255.0;
 751     m_green = col.Green()/255.0;
 752     m_blue = col.Blue()/255.0;
 753     m_alpha = col.Alpha()/255.0;
 754     m_size = font.GetPointSize();
 755     m_underlined = font.GetUnderlined();
 756
 757 #ifdef __WXMAC__
 758     m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
 759 #elif defined(__WXGTK__)
 760     m_font = pango_font_description_copy( font.GetNativeFontInfo()->description );
 761 #else
 762     m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
 763     m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
 764     m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
 765 #endif
 766 }
 767
 768 wxCairoFontData::~wxCairoFontData()
 769 {
 770 #ifdef __WXMAC__
 771     cairo_font_face_destroy( m_font );
 772 #elif defined(__WXGTK__)
 773     pango_font_description_free( m_font );
 774 #else
 775 #endif
 776 }
 777
 778 void wxCairoFontData::Apply( wxGraphicsContext* context )
 779 {
 780     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 781     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 782 #ifdef __WXGTK__
 783     // the rest is done using Pango layouts
 784 #elif defined(__WXMAC__)
 785     cairo_set_font_face(ctext, m_font);
 786     cairo_set_font_size(ctext, m_size );
 787 #else
 788     cairo_select_font_face(ctext, m_fontName, m_slant, m_weights );
 789     cairo_set_font_size(ctext, m_size );
 790 #endif
 791 }
 792
 793 //-----------------------------------------------------------------------------
 794 // wxCairoPathData implementation
 795 //-----------------------------------------------------------------------------
 796
 797 wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
 798     : wxGraphicsPathData(renderer)
 799 {
 800     if (pathcontext)
 801     {
 802         m_pathContext = pathcontext;
 803     }
 804     else
 805     {
 806         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 807         m_pathContext = cairo_create(surface);
 808         cairo_surface_destroy (surface);
 809     }
 810 }
 811
 812 wxCairoPathData::~wxCairoPathData()
 813 {
 814     cairo_destroy(m_pathContext);
 815 }
 816
 817 wxGraphicsObjectRefData *wxCairoPathData::Clone() const
 818 {
 819     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 820     cairo_t* pathcontext = cairo_create(surface);
 821     cairo_surface_destroy (surface);
 822
 823     cairo_path_t* path = cairo_copy_path(m_pathContext);
 824     cairo_append_path(pathcontext, path);
 825     cairo_path_destroy(path);
 826     return new wxCairoPathData( GetRenderer() ,pathcontext);
 827 }
 828
 829
 830 void* wxCairoPathData::GetNativePath() const
 831 {
 832     return cairo_copy_path(m_pathContext) ;
 833 }
 834
 835 void wxCairoPathData::UnGetNativePath(void *p) const
 836 {
 837     cairo_path_destroy((cairo_path_t*)p);
 838 }
 839
 840 //
 841 // The Primitives
 842 //
 843
 844 void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
 845 {
 846     cairo_move_to(m_pathContext,x,y);
 847 }
 848
 849 void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
 850 {
 851     cairo_line_to(m_pathContext,x,y);
 852 }
 853
 854 void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
 855 {
 856     cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
 857     cairo_append_path(m_pathContext, p);
 858     UnGetNativePath(p);
 859 }
 860
 861 void wxCairoPathData::CloseSubpath()
 862 {
 863     cairo_close_path(m_pathContext);
 864 }
 865
 866 void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 867 {
 868     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
 869 }
 870
 871 // gets the last point of the current path, (0,0) if not yet set
 872 void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
 873 {
 874     double dx,dy;
 875     cairo_get_current_point(m_pathContext,&dx,&dy);
 876     if (x)
 877         *x = dx;
 878     if (y)
 879         *y = dy;
 880 }
 881
 882 void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 883 {
 884     // as clockwise means positive in our system (y pointing downwards)
 885     // TODO make this interpretation dependent of the
 886     // real device trans
 887     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
 888         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
 889     else
 890         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
 891 }
 892
 893 // transforms each point of this path by the matrix
 894 void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
 895 {
 896     // as we don't have a true path object, we have to apply the inverse
 897     // matrix to the context
 898     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
 899     cairo_matrix_invert( &m );
 900     cairo_transform(m_pathContext,&m);
 901 }
 902
 903 // gets the bounding box enclosing all points (possibly including control points)
 904 void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
 905 {
 906     double x1,y1,x2,y2;
 907
 908     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
 909     if ( x2 < x1 )
 910     {
 911         *x = x2;
 912         *w = x1-x2;
 913     }
 914     else
 915     {
 916         *x = x1;
 917         *w = x2-x1;
 918     }
 919
 920     if( y2 < y1 )
 921     {
 922         *y = y2;
 923         *h = y1-y2;
 924     }
 925     else
 926     {
 927         *y = y1;
 928         *h = y2-y1;
 929     }
 930 }
 931
 932 bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
 933 {
 934     cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
 935     return cairo_in_fill( m_pathContext, x, y) != 0;
 936 }
 937
 938 //-----------------------------------------------------------------------------
 939 // wxCairoMatrixData implementation
 940 //-----------------------------------------------------------------------------
 941
 942 wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
 943     : wxGraphicsMatrixData(renderer)
 944 {
 945     if ( matrix )
 946         m_matrix = *matrix;
 947 }
 948
 949 wxCairoMatrixData::~wxCairoMatrixData()
 950 {
 951     // nothing to do
 952 }
 953
 954 wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
 955 {
 956     return new wxCairoMatrixData(GetRenderer(),&m_matrix);
 957 }
 958
 959 // concatenates the matrix
 960 void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
 961 {
 962     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
 963 }
 964
 965 // sets the matrix to the respective values
 966 void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 967                         wxDouble tx, wxDouble ty)
 968 {
 969     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
 970 }
 971
 972 // gets the component valuess of the matrix
 973 void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 974                             wxDouble* d, wxDouble* tx, wxDouble* ty) const
 975 {
 976     if (a)  *a = m_matrix.xx;
 977     if (b)  *b = m_matrix.yx;
 978     if (c)  *c = m_matrix.xy;
 979     if (d)  *d = m_matrix.yy;
 980     if (tx) *tx= m_matrix.x0;
 981     if (ty) *ty= m_matrix.y0;
 982 }
 983
 984 // makes this the inverse matrix
 985 void wxCairoMatrixData::Invert()
 986 {
 987     cairo_matrix_invert( &m_matrix );
 988 }
 989
 990 // returns true if the elements of the transformation matrix are equal ?
 991 bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 992 {
 993     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
 994     return (
 995         m_matrix.xx == tm->xx &&
 996         m_matrix.yx == tm->yx &&
 997         m_matrix.xy == tm->xy &&
 998         m_matrix.yy == tm->yy &&
 999         m_matrix.x0 == tm->x0 &&
1000         m_matrix.y0 == tm->y0 ) ;
1001 }
1002
1003 // return true if this is the identity matrix
1004 bool wxCairoMatrixData::IsIdentity() const
1005 {
1006     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
1007         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
1008 }
1009
1010 //
1011 // transformation
1012 //
1013
1014 // add the translation to this matrix
1015 void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
1016 {
1017     cairo_matrix_translate( &m_matrix, dx, dy) ;
1018 }
1019
1020 // add the scale to this matrix
1021 void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1022 {
1023     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
1024 }
1025
1026 // add the rotation to this matrix (radians)
1027 void wxCairoMatrixData::Rotate( wxDouble angle )
1028 {
1029     cairo_matrix_rotate( &m_matrix, angle) ;
1030 }
1031
1032 //
1033 // apply the transforms
1034 //
1035
1036 // applies that matrix to the point
1037 void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1038 {
1039     double lx = *x, ly = *y ;
1040     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
1041     *x = lx;
1042     *y = ly;
1043 }
1044
1045 // applies the matrix except for translations
1046 void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1047 {
1048     double lx = *dx, ly = *dy ;
1049     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
1050     *dx = lx;
1051     *dy = ly;
1052 }
1053
1054 // returns the native representation
1055 void * wxCairoMatrixData::GetNativeMatrix() const
1056 {
1057     return (void*) &m_matrix;
1058 }
1059
1060 // wxCairoBitmap implementation
1061 //-----------------------------------------------------------------------------
1062
1063 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
1064     wxGraphicsObjectRefData( renderer )
1065 {
1066     m_surface = bitmap;
1067     m_pattern = cairo_pattern_create_for_surface(m_surface);
1068 }
1069
1070 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
1071 {
1072     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
1073
1074     int bw = m_width = bmp.GetWidth();
1075     int bh = m_height = bmp.GetHeight();
1076     wxBitmap bmpSource = bmp;  // we need a non-const instance
1077     m_buffer = new unsigned char[bw*bh*4];
1078     wxUint32* data = (wxUint32*)m_buffer;
1079
1080     // Create a surface object and copy the bitmap pixel data to it.  if the
1081     // image has alpha (or a mask represented as alpha) then we'll use a
1082     // different format and iterator than if it doesn't...
1083     if (bmpSource.HasAlpha() || bmpSource.GetMask())
1084     {
1085         m_surface = cairo_image_surface_create_for_data(
1086             m_buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
1087         wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1088         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1089
1090         wxAlphaPixelData::Iterator p(pixData);
1091         for (int y=0; y<bh; y++)
1092         {
1093             wxAlphaPixelData::Iterator rowStart = p;
1094             for (int x=0; x<bw; x++)
1095             {
1096                 // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
1097                 // with alpha in the upper 8 bits, then red, then green, then
1098                 // blue. The 32-bit quantities are stored native-endian.
1099                 // Pre-multiplied alpha is used.
1100                 unsigned char alpha = p.Alpha();
1101                 if (alpha == 0)
1102                     *data = 0;
1103                 else
1104                     *data = ( alpha                      << 24
1105                               | (p.Red() * alpha/255)    << 16
1106                               | (p.Green() * alpha/255)  <<  8
1107                               | (p.Blue() * alpha/255) );
1108                 ++data;
1109                 ++p;
1110             }
1111             p = rowStart;
1112             p.OffsetY(pixData, 1);
1113         }
1114     }
1115     else  // no alpha
1116     {
1117         m_surface = cairo_image_surface_create_for_data(
1118             m_buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
1119         wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1120         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1121
1122         wxNativePixelData::Iterator p(pixData);
1123         for (int y=0; y<bh; y++)
1124         {
1125             wxNativePixelData::Iterator rowStart = p;
1126             for (int x=0; x<bw; x++)
1127             {
1128                 // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
1129                 // the upper 8 bits unused. Red, Green, and Blue are stored in
1130                 // the remaining 24 bits in that order.  The 32-bit quantities
1131                 // are stored native-endian.
1132                 *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
1133                 ++data;
1134                 ++p;
1135             }
1136             p = rowStart;
1137             p.OffsetY(pixData, 1);
1138         }
1139     }
1140     m_pattern = cairo_pattern_create_for_surface(m_surface);
1141 }
1142
1143 wxCairoBitmapData::~wxCairoBitmapData()
1144 {
1145     if (m_pattern)
1146         cairo_pattern_destroy(m_pattern);
1147
1148     if (m_surface)
1149         cairo_surface_destroy(m_surface);
1150
1151     delete [] m_buffer;
1152 }
1153
1154
1155
1156 //-----------------------------------------------------------------------------
1157 // wxCairoContext implementation
1158 //-----------------------------------------------------------------------------
1159
1160 class wxCairoOffsetHelper
1161 {
1162 public :
1163     wxCairoOffsetHelper( cairo_t* ctx , bool offset )
1164     {
1165         m_ctx = ctx;
1166         m_offset = offset;
1167         if ( m_offset )
1168              cairo_translate( m_ctx, 0.5, 0.5 );
1169     }
1170     ~wxCairoOffsetHelper( )
1171     {
1172         if ( m_offset )
1173             cairo_translate( m_ctx, -0.5, -0.5 );
1174     }
1175 public :
1176     cairo_t* m_ctx;
1177     bool m_offset;
1178 } ;
1179
1180 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
1181 : wxGraphicsContext(renderer)
1182 {
1183 #ifdef __WXGTK20__
1184     const wxDCImpl *impl = dc.GetImpl();
1185     Init( (cairo_t*) impl->GetCairoContext() );
1186
1187     wxPoint org = dc.GetDeviceOrigin();
1188     cairo_translate( m_context, org.x, org.y );
1189
1190     double sx,sy;
1191     dc.GetUserScale( &sx, &sy );
1192     cairo_scale( m_context, sx, sy );
1193
1194     org = dc.GetLogicalOrigin();
1195     cairo_translate( m_context, -org.x, -org.y );
1196 #endif
1197 }
1198
1199 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
1200 : wxGraphicsContext(renderer)
1201 {
1202 #ifdef __WXGTK20__
1203     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1204     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1205
1206 #if 0
1207     wxGraphicsMatrix matrix = CreateMatrix();
1208
1209     wxPoint org = dc.GetDeviceOrigin();
1210     matrix.Translate( org.x, org.y );
1211
1212     org = dc.GetLogicalOrigin();
1213     matrix.Translate( -org.x, -org.y );
1214
1215     double sx,sy;
1216     dc.GetUserScale( &sx, &sy );
1217     matrix.Scale( sx, sy );
1218
1219     ConcatTransform( matrix );
1220 #endif
1221 #endif
1222
1223 #ifdef __WXMAC__
1224     int width, height;
1225     dc.GetSize( &width, &height );
1226     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1227     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1228     Init( cairo_create( surface ) );
1229     cairo_surface_destroy( surface );
1230 #endif
1231 }
1232
1233 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
1234 : wxGraphicsContext(renderer)
1235 {
1236 #ifdef __WXGTK20__
1237     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1238     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1239
1240 #if 0
1241     wxGraphicsMatrix matrix = CreateMatrix();
1242
1243     wxPoint org = dc.GetDeviceOrigin();
1244     matrix.Translate( org.x, org.y );
1245
1246     org = dc.GetLogicalOrigin();
1247     matrix.Translate( -org.x, -org.y );
1248
1249     double sx,sy;
1250     dc.GetUserScale( &sx, &sy );
1251     matrix.Scale( sx, sy );
1252
1253     ConcatTransform( matrix );
1254 #endif
1255 #endif
1256
1257 #ifdef __WXMAC__
1258     int width, height;
1259     dc.GetSize( &width, &height );
1260     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1261     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1262     Init( cairo_create( surface ) );
1263     cairo_surface_destroy( surface );
1264 #endif
1265 }
1266
1267 #ifdef __WXGTK20__
1268 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
1269 : wxGraphicsContext(renderer)
1270 {
1271     Init( gdk_cairo_create( drawable ) );
1272 }
1273 #endif
1274
1275 #ifdef __WXMSW__
1276 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
1277 : wxGraphicsContext(renderer)
1278 {
1279     m_mswSurface = cairo_win32_surface_create(handle);
1280     m_context = cairo_create(m_mswSurface);
1281     PushState();
1282     PushState();
1283 }
1284 #endif
1285
1286
1287 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1288 : wxGraphicsContext(renderer)
1289 {
1290     Init( context );
1291 }
1292
1293 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1294 : wxGraphicsContext(renderer)
1295 {
1296 #ifdef __WXGTK__
1297     // something along these lines (copied from dcclient)
1298
1299     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1300     // code should still be able to create wxClientDCs for them, so we will
1301     // use the parent window here then.
1302     if (window->m_wxwindow == NULL)
1303     {
1304         window = window->GetParent();
1305     }
1306
1307     wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
1308
1309     Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
1310 #endif
1311 }
1312
1313 wxCairoContext::~wxCairoContext()
1314 {
1315     if ( m_context )
1316     {
1317         PopState();
1318 #ifdef __WXMSW__
1319     m_mswSurface = cairo_win32_surface_create((HDC)window->GetHandle());
1320     m_context = cairo_create(m_mswSurface);
1321 #endif
1322         PopState();
1323         cairo_destroy(m_context);
1324     }
1325 #ifdef __WXMSW__
1326     if ( m_mswSurface )
1327         cairo_surface_destroy(m_mswSurface);
1328 #endif
1329 }
1330
1331 void wxCairoContext::Init(cairo_t *context)
1332 {
1333     m_context = context ;
1334     PushState();
1335     PushState();
1336 }
1337
1338
1339 void wxCairoContext::Clip( const wxRegion& region )
1340 {
1341     // Create a path with all the rectangles in the region
1342     wxGraphicsPath path = GetRenderer()->CreatePath();
1343     wxRegionIterator ri(region);
1344     while (ri)
1345     {
1346         path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
1347         ++ri;
1348     }
1349
1350     // Put it in the context
1351     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1352     cairo_append_path(m_context, cp);
1353
1354     // clip to that path
1355     cairo_clip(m_context);
1356     path.UnGetNativePath(cp);
1357 }
1358
1359 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1360 {
1361     // Create a path with this rectangle
1362     wxGraphicsPath path = GetRenderer()->CreatePath();
1363     path.AddRectangle(x,y,w,h);
1364
1365     // Put it in the context
1366     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1367     cairo_append_path(m_context, cp);
1368
1369     // clip to that path
1370     cairo_clip(m_context);
1371     path.UnGetNativePath(cp);
1372 }
1373
1374 void wxCairoContext::ResetClip()
1375 {
1376     cairo_reset_clip(m_context);
1377 }
1378
1379
1380 void wxCairoContext::StrokePath( const wxGraphicsPath& path )
1381 {
1382     if ( !m_pen.IsNull() )
1383     {
1384         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1385         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1386         cairo_append_path(m_context,cp);
1387         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1388         cairo_stroke(m_context);
1389         path.UnGetNativePath(cp);
1390     }
1391 }
1392
1393 void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1394 {
1395     if ( !m_brush.IsNull() )
1396     {
1397         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1398         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1399         cairo_append_path(m_context,cp);
1400         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1401         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1402         cairo_fill(m_context);
1403         path.UnGetNativePath(cp);
1404     }
1405 }
1406
1407 void wxCairoContext::Rotate( wxDouble angle )
1408 {
1409     cairo_rotate(m_context,angle);
1410 }
1411
1412 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1413 {
1414     cairo_translate(m_context,dx,dy);
1415 }
1416
1417 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1418 {
1419     cairo_scale(m_context,xScale,yScale);
1420 }
1421
1422 // concatenates this transform with the current transform of this context
1423 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1424 {
1425     cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
1426 }
1427
1428 // sets the transform of this context
1429 void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
1430 {
1431     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
1432 }
1433
1434 // gets the matrix of this context
1435 wxGraphicsMatrix wxCairoContext::GetTransform() const
1436 {
1437     wxGraphicsMatrix matrix = CreateMatrix();
1438     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
1439     return matrix;
1440 }
1441
1442
1443
1444 void wxCairoContext::PushState()
1445 {
1446     cairo_save(m_context);
1447 }
1448
1449 void wxCairoContext::PopState()
1450 {
1451     cairo_restore(m_context);
1452 }
1453
1454 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1455 {
1456     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1457     DrawBitmap(bitmap, x, y, w, h);
1458
1459 }
1460
1461 void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1462 {
1463     PushState();
1464
1465     // In case we're scaling the image by using a width and height different
1466     // than the bitmap's size create a pattern transformation on the surface and
1467     // draw the transformed pattern.
1468     wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
1469     cairo_pattern_t* pattern = data->GetCairoPattern();
1470     wxSize size = data->GetSize();
1471
1472     wxDouble scaleX = w / size.GetWidth();
1473     wxDouble scaleY = h / size.GetHeight();
1474
1475     // prepare to draw the image
1476     cairo_translate(m_context, x, y);
1477     cairo_scale(m_context, scaleX, scaleY);
1478     cairo_set_source(m_context, pattern);
1479     // use the original size here since the context is scaled already...
1480     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
1481     // fill the rectangle using the pattern
1482     cairo_fill(m_context);
1483
1484     PopState();
1485 }
1486
1487 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1488 {
1489     // An icon is a bitmap on wxGTK, so do this the easy way.  When we want to
1490     // start using the Cairo backend on other platforms then we may need to
1491     // fiddle with this...
1492     DrawBitmap(icon, x, y, w, h);
1493 }
1494
1495
1496 void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
1497 {
1498     wxCHECK_RET( !m_font.IsNull(),
1499                  wxT("wxCairoContext::DrawText - no valid font set") );
1500
1501     if ( str.empty())
1502         return;
1503
1504     const wxCharBuffer data = str.utf8_str();
1505     if ( !data )
1506         return;
1507
1508     ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
1509
1510 #ifdef __WXGTK__
1511     size_t datalen = strlen(data);
1512
1513     PangoLayout *layout = pango_cairo_create_layout (m_context);
1514     wxCairoFontData* font_data = (wxCairoFontData*) m_font.GetRefData();
1515     pango_layout_set_font_description( layout, font_data->GetFont());
1516     pango_layout_set_text(layout, data, datalen);
1517
1518     if (font_data->GetUnderlined())
1519     {
1520         PangoAttrList *attrs = pango_attr_list_new();
1521         PangoAttribute *attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1522         pango_attr_list_insert(attrs, attr);
1523         pango_layout_set_attributes(layout, attrs);
1524         pango_attr_list_unref(attrs);
1525     }
1526
1527     cairo_move_to(m_context, x, y);
1528     pango_cairo_show_layout (m_context, layout);
1529
1530     g_object_unref (layout);
1531 #else
1532     // Cairo's x,y for drawing text is at the baseline, so we need to adjust
1533     // the position we move to by the ascent.
1534     cairo_font_extents_t fe;
1535     cairo_font_extents(m_context, &fe);
1536     cairo_move_to(m_context, x, y+fe.ascent);
1537
1538     cairo_show_text(m_context, data);
1539 #endif
1540 }
1541
1542 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1543                                     wxDouble *descent, wxDouble *externalLeading ) const
1544 {
1545     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
1546
1547     if ( width )
1548         *width = 0;
1549     if ( height )
1550         *height = 0;
1551     if ( descent )
1552         *descent = 0;
1553     if ( externalLeading )
1554         *externalLeading = 0;
1555
1556     if ( str.empty())
1557         return;
1558
1559 #ifdef __WXGTK__
1560     int w, h;
1561
1562     PangoLayout *layout = pango_cairo_create_layout (m_context);
1563     pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
1564     const wxCharBuffer data = str.utf8_str();
1565     if ( !data )
1566     {
1567         return;
1568     }
1569     pango_layout_set_text( layout, data, strlen(data) );
1570     pango_layout_get_pixel_size (layout, &w, &h);
1571     if ( width )
1572         *width = w;
1573     if ( height )
1574         *height = h;
1575     if (descent)
1576     {
1577         PangoLayoutIter *iter = pango_layout_get_iter(layout);
1578         int baseline = pango_layout_iter_get_baseline(iter);
1579         pango_layout_iter_free(iter);
1580         *descent = h - PANGO_PIXELS(baseline);
1581     }
1582     g_object_unref (layout);
1583 #else
1584     ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this);
1585
1586     if (width)
1587     {
1588         const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
1589         cairo_text_extents_t te;
1590         cairo_text_extents(m_context, buf, &te);
1591         *width = te.width;
1592     }
1593
1594     if (height || descent || externalLeading)
1595     {
1596         cairo_font_extents_t fe;
1597         cairo_font_extents(m_context, &fe);
1598
1599         // some backends have negative descents
1600
1601         if ( fe.descent < 0 )
1602             fe.descent = -fe.descent;
1603
1604         if ( fe.height < (fe.ascent + fe.descent ) )
1605         {
1606             // some backends are broken re height ... (eg currently ATSUI)
1607             fe.height = fe.ascent + fe.descent;
1608         }
1609
1610         if (height)
1611             *height = fe.height;
1612         if ( descent )
1613             *descent = fe.descent;
1614         if ( externalLeading )
1615             *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
1616     }
1617 #endif
1618 }
1619
1620 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1621 {
1622     widths.Empty();
1623     widths.Add(0, text.length());
1624
1625     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
1626
1627     if (text.empty())
1628         return;
1629
1630     // TODO
1631 }
1632
1633 void * wxCairoContext::GetNativeContext()
1634 {
1635     return m_context;
1636 }
1637
1638 bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
1639 {
1640     if (m_antialias == antialias)
1641         return true;
1642
1643     m_antialias = antialias;
1644
1645     cairo_antialias_t antialiasMode;
1646     switch (antialias)
1647     {
1648         case wxANTIALIAS_DEFAULT:
1649             antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
1650             break;
1651         case wxANTIALIAS_NONE:
1652             antialiasMode = CAIRO_ANTIALIAS_NONE;
1653             break;
1654         default:
1655             return false;
1656     }
1657     cairo_set_antialias(m_context, antialiasMode);
1658     return true;
1659 }
1660
1661 bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
1662 {
1663     if ( m_composition == op )
1664         return true;
1665
1666     m_composition = op;
1667     cairo_operator_t cop;
1668     switch (op)
1669     {
1670         case wxCOMPOSITION_CLEAR:
1671             cop = CAIRO_OPERATOR_CLEAR;
1672             break;
1673         case wxCOMPOSITION_SOURCE:
1674             cop = CAIRO_OPERATOR_SOURCE;
1675             break;
1676         case wxCOMPOSITION_OVER:
1677             cop = CAIRO_OPERATOR_OVER;
1678             break;
1679         case wxCOMPOSITION_IN:
1680             cop = CAIRO_OPERATOR_IN;
1681             break;
1682         case wxCOMPOSITION_OUT:
1683             cop = CAIRO_OPERATOR_OUT;
1684             break;
1685         case wxCOMPOSITION_ATOP:
1686             cop = CAIRO_OPERATOR_ATOP;
1687             break;
1688         case wxCOMPOSITION_DEST:
1689             cop = CAIRO_OPERATOR_DEST;
1690             break;
1691         case wxCOMPOSITION_DEST_OVER:
1692             cop = CAIRO_OPERATOR_DEST_OVER;
1693             break;
1694         case wxCOMPOSITION_DEST_IN:
1695             cop = CAIRO_OPERATOR_DEST_IN;
1696             break;
1697         case wxCOMPOSITION_DEST_OUT:
1698             cop = CAIRO_OPERATOR_DEST_OUT;
1699             break;
1700         case wxCOMPOSITION_DEST_ATOP:
1701             cop = CAIRO_OPERATOR_DEST_ATOP;
1702             break;
1703         case wxCOMPOSITION_XOR:
1704             cop = CAIRO_OPERATOR_XOR;
1705             break;
1706         case wxCOMPOSITION_ADD:
1707             cop = CAIRO_OPERATOR_ADD;
1708             break;
1709         default:
1710             return false;
1711     }
1712     cairo_set_operator(m_context, cop);
1713     return true;
1714 }
1715
1716 void wxCairoContext::BeginLayer(wxDouble opacity)
1717 {
1718     m_layerOpacities.push_back(opacity);
1719     cairo_push_group(m_context);
1720 }
1721
1722 void wxCairoContext::EndLayer()
1723 {
1724     float opacity = m_layerOpacities.back();
1725     m_layerOpacities.pop_back();
1726     cairo_pop_group_to_source(m_context);
1727     cairo_paint_with_alpha(m_context,opacity);
1728 }
1729
1730 //-----------------------------------------------------------------------------
1731 // wxCairoRenderer declaration
1732 //-----------------------------------------------------------------------------
1733
1734 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
1735 {
1736 public :
1737     wxCairoRenderer() {}
1738
1739     virtual ~wxCairoRenderer() {}
1740
1741     // Context
1742
1743     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1744     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
1745     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
1746
1747     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1748
1749     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1750
1751     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1752
1753     virtual wxGraphicsContext * CreateMeasuringContext();
1754
1755     // Path
1756
1757     virtual wxGraphicsPath CreatePath();
1758
1759     // Matrix
1760
1761     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1762         wxDouble tx=0.0, wxDouble ty=0.0);
1763
1764
1765     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1766
1767     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1768
1769     virtual wxGraphicsBrush
1770     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
1771                               wxDouble x2, wxDouble y2,
1772                               const wxGraphicsGradientStops& stops);
1773
1774     virtual wxGraphicsBrush
1775     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
1776                               wxDouble xc, wxDouble yc,
1777                               wxDouble radius,
1778                               const wxGraphicsGradientStops& stops);
1779
1780     // sets the font
1781     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1782
1783     // create a native bitmap representation
1784     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
1785
1786     // create a graphics bitmap from a native bitmap
1787     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
1788
1789     // create a subimage from a native image representation
1790     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
1791
1792 private :
1793     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
1794 } ;
1795
1796 //-----------------------------------------------------------------------------
1797 // wxCairoRenderer implementation
1798 //-----------------------------------------------------------------------------
1799
1800 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
1801
1802 static wxCairoRenderer gs_cairoGraphicsRenderer;
1803 // temporary hack to allow creating a cairo context on any platform
1804 extern wxGraphicsRenderer* gCairoRenderer;
1805 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
1806
1807 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
1808 {
1809     return new wxCairoContext(this,dc);
1810 }
1811
1812 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
1813 {
1814     return new wxCairoContext(this,dc);
1815 }
1816
1817 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
1818 {
1819 #ifdef __WXGTK20__
1820     const wxDCImpl *impl = dc.GetImpl();
1821     cairo_t* context = (cairo_t*) impl->GetCairoContext();
1822     if (context)
1823        return new wxCairoContext(this,dc);
1824     else
1825 #endif
1826        return NULL;
1827 }
1828
1829 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
1830 {
1831 #ifdef __WXMSW__
1832     return new wxCairoContext(this,(HDC)context);
1833 #endif
1834 #ifdef __WXGTK__
1835     return new wxCairoContext(this,(cairo_t*)context);
1836 #endif
1837 }
1838
1839
1840 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
1841 {
1842 #ifdef __WXGTK__
1843     return new wxCairoContext(this,(GdkDrawable*)window);
1844 #else
1845     return NULL;
1846 #endif
1847 }
1848
1849 wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
1850 {
1851 #ifdef __WXGTK__
1852     return CreateContextFromNativeWindow(gdk_get_default_root_window());
1853 #endif
1854     return NULL;
1855     // TODO
1856 }
1857
1858 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
1859 {
1860     return new wxCairoContext(this, window );
1861 }
1862
1863 // Path
1864
1865 wxGraphicsPath wxCairoRenderer::CreatePath()
1866 {
1867     wxGraphicsPath path;
1868     path.SetRefData( new wxCairoPathData(this) );
1869     return path;
1870 }
1871
1872
1873 // Matrix
1874
1875 wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1876                                                 wxDouble tx, wxDouble ty)
1877
1878 {
1879     wxGraphicsMatrix m;
1880     wxCairoMatrixData* data = new wxCairoMatrixData( this );
1881     data->Set( a,b,c,d,tx,ty ) ;
1882     m.SetRefData(data);
1883     return m;
1884 }
1885
1886 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
1887 {
1888     if ( !pen.Ok() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT )
1889         return wxNullGraphicsPen;
1890     else
1891     {
1892         wxGraphicsPen p;
1893         p.SetRefData(new wxCairoPenData( this, pen ));
1894         return p;
1895     }
1896 }
1897
1898 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
1899 {
1900     if ( !brush.Ok() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT )
1901         return wxNullGraphicsBrush;
1902     else
1903     {
1904         wxGraphicsBrush p;
1905         p.SetRefData(new wxCairoBrushData( this, brush ));
1906         return p;
1907     }
1908 }
1909
1910 wxGraphicsBrush
1911 wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
1912                                            wxDouble x2, wxDouble y2,
1913                                            const wxGraphicsGradientStops& stops)
1914 {
1915     wxGraphicsBrush p;
1916     wxCairoBrushData* d = new wxCairoBrushData( this );
1917     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
1918     p.SetRefData(d);
1919     return p;
1920 }
1921
1922 wxGraphicsBrush
1923 wxCairoRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
1924                                            wxDouble xc, wxDouble yc, wxDouble r,
1925                                            const wxGraphicsGradientStops& stops)
1926 {
1927     wxGraphicsBrush p;
1928     wxCairoBrushData* d = new wxCairoBrushData( this );
1929     d->CreateRadialGradientBrush(xo, yo, xc, yc, r, stops);
1930     p.SetRefData(d);
1931     return p;
1932 }
1933
1934 // sets the font
1935 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
1936 {
1937     if ( font.Ok() )
1938     {
1939         wxGraphicsFont p;
1940         p.SetRefData(new wxCairoFontData( this , font, col ));
1941         return p;
1942     }
1943     else
1944         return wxNullGraphicsFont;
1945 }
1946
1947 wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
1948 {
1949     if ( bmp.Ok() )
1950     {
1951         wxGraphicsBitmap p;
1952         p.SetRefData(new wxCairoBitmapData( this , bmp ));
1953         return p;
1954     }
1955     else
1956         return wxNullGraphicsBitmap;
1957 }
1958
1959 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
1960 {
1961     if ( bitmap != NULL )
1962     {
1963         wxGraphicsBitmap p;
1964         p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
1965         return p;
1966     }
1967     else
1968         return wxNullGraphicsBitmap;
1969 }
1970
1971 wxGraphicsBitmap
1972 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
1973                                  wxDouble WXUNUSED(x),
1974                                  wxDouble WXUNUSED(y),
1975                                  wxDouble WXUNUSED(w),
1976                                  wxDouble WXUNUSED(h))
1977 {
1978     wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
1979     return wxNullGraphicsBitmap;
1980 }
1981
1982 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
1983 {
1984     return &gs_cairoGraphicsRenderer;
1985 }
1986
1987 #else // !wxUSE_CAIRO
1988
1989 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
1990 {
1991     return NULL;
1992 }
1993
1994 #endif  // wxUSE_CAIRO/!wxUSE_CAIRO
1995
1996 // MSW and OS X have their own native default renderers, but the other ports
1997 // use Cairo by default
1998 #if !(defined(__WXMSW__) || defined(__WXOSX__))
1999 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2000 {
2001     return GetCairoRenderer();
2002 }
2003 #endif // !(__WXMSW__ || __WXOSX__)
2004
2005 #endif // wxUSE_GRAPHICS_CONTEXT