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     #ifdef __WXGTK__
  33         #include "wx/window.h"
  34     #endif
  35 #endif
  36
  37 #include "wx/private/graphics.h"
  38 #include "wx/rawbmp.h"
  39 #include "wx/vector.h"
  40
  41 using namespace std;
  42
  43 //-----------------------------------------------------------------------------
  44 // device context implementation
  45 //
  46 // more and more of the dc functionality should be implemented by calling
  47 // the appropricate wxCairoContext, but we will have to do that step by step
  48 // also coordinate conversions should be moved to native matrix ops
  49 //-----------------------------------------------------------------------------
  50
  51 // we always stock two context states, one at entry, to be able to preserve the
  52 // state we were called with, the other one after changing to HI Graphics orientation
  53 // (this one is used for getting back clippings etc)
  54
  55 //-----------------------------------------------------------------------------
  56 // wxGraphicsPath implementation
  57 //-----------------------------------------------------------------------------
  58
  59 // TODO remove this dependency (gdiplus needs the macros)
  60
  61 #ifndef max
  62 #define max(a,b)            (((a) > (b)) ? (a) : (b))
  63 #endif
  64
  65 #ifndef min
  66 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  67 #endif
  68
  69 #include <cairo.h>
  70 #ifdef __WXMSW__
  71 #include <cairo-win32.h>
  72 #endif
  73
  74 #ifdef __WXGTK__
  75 #include <gtk/gtk.h>
  76 #include "wx/fontutil.h"
  77 #include "wx/gtk/dc.h"
  78 #endif
  79
  80 #ifdef __WXMSW__
  81 #include <cairo-win32.h>
  82 #endif
  83
  84 #ifdef __WXMAC__
  85 #include "wx/osx/private.h"
  86 #include <cairo-quartz.h>
  87 #include <cairo-atsui.h>
  88 #endif
  89
  90 class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
  91 {
  92 public :
  93     wxCairoPathData(wxGraphicsRenderer* renderer, cairo_t* path = NULL);
  94     ~wxCairoPathData();
  95
  96     virtual wxGraphicsObjectRefData *Clone() const;
  97
  98     //
  99     // These are the path primitives from which everything else can be constructed
 100     //
 101
 102     // begins a new subpath at (x,y)
 103     virtual void MoveToPoint( wxDouble x, wxDouble y );
 104
 105     // adds a straight line from the current point to (x,y)
 106     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 107
 108     // adds a cubic Bezier curve from the current point, using two control points and an end point
 109     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 110
 111
 112     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 113     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 114
 115     // gets the last point of the current path, (0,0) if not yet set
 116     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 117
 118     // adds another path
 119     virtual void AddPath( const wxGraphicsPathData* path );
 120
 121     // closes the current sub-path
 122     virtual void CloseSubpath();
 123
 124     //
 125     // These are convenience functions which - if not available natively will be assembled
 126     // using the primitives from above
 127     //
 128
 129     /*
 130
 131     // appends a rectangle as a new closed subpath
 132     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 133     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 134     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 135
 136     // 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)
 137     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 138     */
 139
 140     // returns the native path
 141     virtual void * GetNativePath() const ;
 142
 143     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 144     virtual void UnGetNativePath(void *p) const;
 145
 146     // transforms each point of this path by the matrix
 147     virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
 148
 149     // gets the bounding box enclosing all points (possibly including control points)
 150     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
 151
 152     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxWINDING_RULE) const;
 153
 154 private :
 155     cairo_t* m_pathContext;
 156 };
 157
 158 class WXDLLIMPEXP_CORE wxCairoMatrixData : public wxGraphicsMatrixData
 159 {
 160 public :
 161     wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
 162     virtual ~wxCairoMatrixData() ;
 163
 164     virtual wxGraphicsObjectRefData *Clone() const ;
 165
 166     // concatenates the matrix
 167     virtual void Concat( const wxGraphicsMatrixData *t );
 168
 169     // sets the matrix to the respective values
 170     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 171         wxDouble tx=0.0, wxDouble ty=0.0);
 172
 173     // gets the component valuess of the matrix
 174     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 175                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 176
 177     // makes this the inverse matrix
 178     virtual void Invert();
 179
 180     // returns true if the elements of the transformation matrix are equal ?
 181     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 182
 183     // return true if this is the identity matrix
 184     virtual bool IsIdentity() const;
 185
 186     //
 187     // transformation
 188     //
 189
 190     // add the translation to this matrix
 191     virtual void Translate( wxDouble dx , wxDouble dy );
 192
 193     // add the scale to this matrix
 194     virtual void Scale( wxDouble xScale , wxDouble yScale );
 195
 196     // add the rotation to this matrix (radians)
 197     virtual void Rotate( wxDouble angle );
 198
 199     //
 200     // apply the transforms
 201     //
 202
 203     // applies that matrix to the point
 204     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 205
 206     // applies the matrix except for translations
 207     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 208
 209     // returns the native representation
 210     virtual void * GetNativeMatrix() const;
 211 private:
 212     cairo_matrix_t m_matrix ;
 213 } ;
 214
 215 class WXDLLIMPEXP_CORE wxCairoPenData : public wxGraphicsObjectRefData
 216 {
 217 public:
 218     wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 219     ~wxCairoPenData();
 220
 221     void Init();
 222
 223     virtual void Apply( wxGraphicsContext* context );
 224     virtual wxDouble GetWidth() { return m_width; }
 225
 226 private :
 227     double m_width;
 228
 229     double m_red;
 230     double m_green;
 231     double m_blue;
 232     double m_alpha;
 233
 234     cairo_line_cap_t m_cap;
 235     cairo_line_join_t m_join;
 236
 237     int m_count;
 238     const double *m_lengths;
 239     double *m_userLengths;
 240
 241     wxPen m_pen;
 242
 243     wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
 244 };
 245
 246 class WXDLLIMPEXP_CORE wxCairoBrushData : public wxGraphicsObjectRefData
 247 {
 248 public:
 249     wxCairoBrushData( wxGraphicsRenderer* renderer );
 250     wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 251     ~wxCairoBrushData ();
 252
 253     virtual void Apply( wxGraphicsContext* context );
 254
 255     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 256                                    wxDouble x2, wxDouble y2,
 257                                    const wxGraphicsGradientStops& stops);
 258     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 259                                    wxDouble xc, wxDouble yc, wxDouble radius,
 260                                    const wxGraphicsGradientStops& stops);
 261
 262 protected:
 263     virtual void Init();
 264
 265     // common part of Create{Linear,Radial}GradientBrush()
 266     void AddGradientStops(const wxGraphicsGradientStops& stops);
 267
 268 private :
 269     double m_red;
 270     double m_green;
 271     double m_blue;
 272     double m_alpha;
 273
 274     cairo_pattern_t* m_brushPattern;
 275 };
 276
 277 class wxCairoFontData : public wxGraphicsObjectRefData
 278 {
 279 public:
 280     wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 281     ~wxCairoFontData();
 282
 283     virtual void Apply( wxGraphicsContext* context );
 284 #ifdef __WXGTK__
 285     const PangoFontDescription* GetFont() const { return m_font; }
 286     bool GetUnderlined() const { return m_underlined; }
 287 #endif
 288 private :
 289     double m_size;
 290     bool m_underlined;
 291     double m_red;
 292     double m_green;
 293     double m_blue;
 294     double m_alpha;
 295 #ifdef __WXMAC__
 296     cairo_font_face_t *m_font;
 297 #elif defined(__WXGTK__)
 298     PangoFontDescription* m_font;
 299 #else
 300     wxCharBuffer m_fontName;
 301     cairo_font_slant_t m_slant;
 302     cairo_font_weight_t m_weight;
 303 #endif
 304 #ifdef __WXMSW__
 305     wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
 306 #endif
 307 };
 308
 309 class wxCairoBitmapData : public wxGraphicsObjectRefData
 310 {
 311 public:
 312     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
 313     wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
 314     ~wxCairoBitmapData();
 315
 316     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
 317     virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
 318     virtual wxSize GetSize() { return wxSize(m_width, m_height); }
 319 private :
 320     cairo_surface_t* m_surface;
 321     cairo_pattern_t* m_pattern;
 322     int m_width;
 323     int m_height;
 324     unsigned char* m_buffer;
 325 };
 326
 327 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 328 {
 329 public:
 330     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 331     wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
 332     wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
 333 #ifdef __WXGTK__
 334     wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable );
 335 #endif
 336     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 337     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 338     wxCairoContext();
 339     virtual ~wxCairoContext();
 340
 341     virtual bool ShouldOffset() const
 342     {
 343         if ( !m_enableOffset )
 344             return false;
 345
 346         int penwidth = 0 ;
 347         if ( !m_pen.IsNull() )
 348         {
 349             penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
 350             if ( penwidth == 0 )
 351                 penwidth = 1;
 352         }
 353         return ( penwidth % 2 ) == 1;
 354     }
 355
 356     virtual void Clip( const wxRegion &region );
 357 #ifdef __WXMSW__
 358     cairo_surface_t* m_mswSurface;
 359 #endif
 360
 361     // clips drawings to the rect
 362     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 363
 364     // resets the clipping to original extent
 365     virtual void ResetClip();
 366
 367     virtual void * GetNativeContext();
 368
 369     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 370
 371     virtual bool SetCompositionMode(wxCompositionMode op);
 372
 373     virtual void BeginLayer(wxDouble opacity);
 374
 375     virtual void EndLayer();
 376
 377     virtual void StrokePath( const wxGraphicsPath& p );
 378     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
 379
 380     virtual void Translate( wxDouble dx , wxDouble dy );
 381     virtual void Scale( wxDouble xScale , wxDouble yScale );
 382     virtual void Rotate( wxDouble angle );
 383
 384     // concatenates this transform with the current transform of this context
 385     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 386
 387     // sets the transform of this context
 388     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 389
 390     // gets the matrix of this context
 391     virtual wxGraphicsMatrix GetTransform() const;
 392
 393     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 394     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 395     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 396     virtual void PushState();
 397     virtual void PopState();
 398
 399     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 400                                 wxDouble *descent, wxDouble *externalLeading ) const;
 401     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 402
 403 protected:
 404     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
 405
 406 private:
 407     void Init(cairo_t *context);
 408
 409     cairo_t* m_context;
 410
 411     wxVector<float> m_layerOpacities;
 412
 413     wxDECLARE_NO_COPY_CLASS(wxCairoContext);
 414 };
 415
 416 //-----------------------------------------------------------------------------
 417 // wxCairoPenData implementation
 418 //-----------------------------------------------------------------------------
 419
 420 wxCairoPenData::~wxCairoPenData()
 421 {
 422     delete[] m_userLengths;
 423 }
 424
 425 void wxCairoPenData::Init()
 426 {
 427     m_lengths = NULL;
 428     m_userLengths = NULL;
 429     m_width = 0;
 430     m_count = 0;
 431 }
 432
 433 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 434 : wxGraphicsObjectRefData(renderer)
 435 {
 436     Init();
 437     m_pen = pen;
 438     m_width = m_pen.GetWidth();
 439     if (m_width <= 0.0)
 440         m_width = 0.1;
 441
 442     m_red = m_pen.GetColour().Red()/255.0;
 443     m_green = m_pen.GetColour().Green()/255.0;
 444     m_blue = m_pen.GetColour().Blue()/255.0;
 445     m_alpha = m_pen.GetColour().Alpha()/255.0;
 446
 447     switch ( m_pen.GetCap() )
 448     {
 449     case wxCAP_ROUND :
 450         m_cap = CAIRO_LINE_CAP_ROUND;
 451         break;
 452
 453     case wxCAP_PROJECTING :
 454         m_cap = CAIRO_LINE_CAP_SQUARE;
 455         break;
 456
 457     case wxCAP_BUTT :
 458         m_cap = CAIRO_LINE_CAP_BUTT;
 459         break;
 460
 461     default :
 462         m_cap = CAIRO_LINE_CAP_BUTT;
 463         break;
 464     }
 465
 466     switch ( m_pen.GetJoin() )
 467     {
 468     case wxJOIN_BEVEL :
 469         m_join = CAIRO_LINE_JOIN_BEVEL;
 470         break;
 471
 472     case wxJOIN_MITER :
 473         m_join = CAIRO_LINE_JOIN_MITER;
 474         break;
 475
 476     case wxJOIN_ROUND :
 477         m_join = CAIRO_LINE_JOIN_ROUND;
 478         break;
 479
 480     default :
 481         m_join = CAIRO_LINE_JOIN_MITER;
 482         break;
 483     }
 484
 485     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 486     const double dotted[] =
 487     {
 488         dashUnit , dashUnit + 2.0
 489     };
 490     static const double short_dashed[] =
 491     {
 492         9.0 , 6.0
 493     };
 494     static const double dashed[] =
 495     {
 496         19.0 , 9.0
 497     };
 498     static const double dotted_dashed[] =
 499     {
 500         9.0 , 6.0 , 3.0 , 3.0
 501     };
 502
 503     switch ( m_pen.GetStyle() )
 504     {
 505     case wxPENSTYLE_SOLID :
 506         break;
 507
 508     case wxPENSTYLE_DOT :
 509         m_count = WXSIZEOF(dotted);
 510         m_userLengths = new double[ m_count ] ;
 511         memcpy( m_userLengths, dotted, sizeof(dotted) );
 512         m_lengths = m_userLengths;
 513         break;
 514
 515     case wxPENSTYLE_LONG_DASH :
 516         m_lengths = dashed ;
 517         m_count = WXSIZEOF(dashed);
 518         break;
 519
 520     case wxPENSTYLE_SHORT_DASH :
 521         m_lengths = short_dashed ;
 522         m_count = WXSIZEOF(short_dashed);
 523         break;
 524
 525     case wxPENSTYLE_DOT_DASH :
 526         m_lengths = dotted_dashed ;
 527         m_count = WXSIZEOF(dotted_dashed);
 528         break;
 529
 530     case wxPENSTYLE_USER_DASH :
 531         {
 532             wxDash *wxdashes ;
 533             m_count = m_pen.GetDashes( &wxdashes ) ;
 534             if ((wxdashes != NULL) && (m_count > 0))
 535             {
 536                 m_userLengths = new double[m_count] ;
 537                 for ( int i = 0 ; i < m_count ; ++i )
 538                 {
 539                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 540
 541                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 542                         m_userLengths[i] = dashUnit + 2.0 ;
 543                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 544                         m_userLengths[i] = dashUnit ;
 545                 }
 546             }
 547             m_lengths = m_userLengths ;
 548         }
 549         break;
 550     case wxPENSTYLE_STIPPLE :
 551         {
 552             /*
 553             wxBitmap* bmp = pen.GetStipple();
 554             if ( bmp && bmp->Ok() )
 555             {
 556             wxDELETE( m_penImage );
 557             wxDELETE( m_penBrush );
 558             m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 559             m_penBrush = new TextureBrush(m_penImage);
 560             m_pen->SetBrush( m_penBrush );
 561             }
 562             */
 563         }
 564         break;
 565     default :
 566         if ( m_pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
 567             && m_pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
 568         {
 569             /*
 570             wxDELETE( m_penBrush );
 571             HatchStyle style = HatchStyleHorizontal;
 572             switch( pen.GetStyle() )
 573             {
 574             case wxPENSTYLE_BDIAGONAL_HATCH :
 575             style = HatchStyleBackwardDiagonal;
 576             break ;
 577             case wxPENSTYLE_CROSSDIAG_HATCH :
 578             style = HatchStyleDiagonalCross;
 579             break ;
 580             case wxPENSTYLE_FDIAGONAL_HATCH :
 581             style = HatchStyleForwardDiagonal;
 582             break ;
 583             case wxPENSTYLE_CROSS_HATCH :
 584             style = HatchStyleCross;
 585             break ;
 586             case wxPENSTYLE_HORIZONTAL_HATCH :
 587             style = HatchStyleHorizontal;
 588             break ;
 589             case wxPENSTYLE_VERTICAL_HATCH :
 590             style = HatchStyleVertical;
 591             break ;
 592
 593             }
 594             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 595             pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
 596             m_pen->SetBrush( m_penBrush )
 597             */
 598         }
 599         break;
 600     }
 601 }
 602
 603 void wxCairoPenData::Apply( wxGraphicsContext* context )
 604 {
 605     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 606     cairo_set_line_width(ctext,m_width);
 607     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 608     cairo_set_line_cap(ctext,m_cap);
 609     cairo_set_line_join(ctext,m_join);
 610     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 611 }
 612
 613 //-----------------------------------------------------------------------------
 614 // wxCairoBrushData implementation
 615 //-----------------------------------------------------------------------------
 616
 617 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 618   : wxGraphicsObjectRefData( renderer )
 619 {
 620     Init();
 621 }
 622
 623 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush )
 624   : wxGraphicsObjectRefData(renderer)
 625 {
 626     Init();
 627
 628     m_red = brush.GetColour().Red()/255.0;
 629     m_green = brush.GetColour().Green()/255.0;
 630     m_blue = brush.GetColour().Blue()/255.0;
 631     m_alpha = brush.GetColour().Alpha()/255.0;
 632     /*
 633     if ( brush.GetStyle() == wxBRUSHSTYLE_SOLID)
 634     {
 635     m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 636     brush.GetColour().Green() , brush.GetColour().Blue() ) );
 637     }
 638     else if ( brush.IsHatch() )
 639     {
 640     HatchStyle style = HatchStyleHorizontal;
 641     switch( brush.GetStyle() )
 642     {
 643     case wxBRUSHSTYLE_BDIAGONAL_HATCH :
 644     style = HatchStyleBackwardDiagonal;
 645     break ;
 646     case wxBRUSHSTYLE_CROSSDIAG_HATCH :
 647     style = HatchStyleDiagonalCross;
 648     break ;
 649     case wxBRUSHSTYLE_FDIAGONAL_HATCH :
 650     style = HatchStyleForwardDiagonal;
 651     break ;
 652     case wxBRUSHSTYLE_CROSS_HATCH :
 653     style = HatchStyleCross;
 654     break ;
 655     case wxBRUSHSTYLE_HORIZONTAL_HATCH :
 656     style = HatchStyleHorizontal;
 657     break ;
 658     case wxBRUSHSTYLE_VERTICAL_HATCH :
 659     style = HatchStyleVertical;
 660     break ;
 661
 662     }
 663     m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 664     brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
 665     }
 666     else
 667     {
 668     wxBitmap* bmp = brush.GetStipple();
 669     if ( bmp && bmp->Ok() )
 670     {
 671     wxDELETE( m_brushImage );
 672     m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 673     m_brush = new TextureBrush(m_brushImage);
 674     }
 675     }
 676     */
 677 }
 678
 679 wxCairoBrushData::~wxCairoBrushData ()
 680 {
 681     if (m_brushPattern)
 682         cairo_pattern_destroy(m_brushPattern);
 683 }
 684
 685 void wxCairoBrushData::Apply( wxGraphicsContext* context )
 686 {
 687     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 688     if ( m_brushPattern )
 689     {
 690         cairo_set_source(ctext,m_brushPattern);
 691     }
 692     else
 693     {
 694         cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 695     }
 696 }
 697
 698 void wxCairoBrushData::AddGradientStops(const wxGraphicsGradientStops& stops)
 699 {
 700     // loop over all the stops, they include the beginning and ending ones
 701     const unsigned numStops = stops.GetCount();
 702     for ( unsigned n = 0; n < numStops; n++ )
 703     {
 704         const wxGraphicsGradientStop stop = stops.Item(n);
 705
 706         const wxColour col = stop.GetColour();
 707
 708         cairo_pattern_add_color_stop_rgba
 709         (
 710             m_brushPattern,
 711             stop.GetPosition(),
 712             col.Red()/255.0,
 713             col.Green()/255.0,
 714             col.Blue()/255.0,
 715             col.Alpha()/255.0
 716         );
 717     }
 718
 719     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS,
 720                  wxT("Couldn't create cairo pattern"));
 721 }
 722
 723 void
 724 wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 725                                             wxDouble x2, wxDouble y2,
 726                                             const wxGraphicsGradientStops& stops)
 727 {
 728     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 729
 730     AddGradientStops(stops);
 731 }
 732
 733 void
 734 wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 735                                             wxDouble xc, wxDouble yc,
 736                                             wxDouble radius,
 737                                             const wxGraphicsGradientStops& stops)
 738 {
 739     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 740
 741     AddGradientStops(stops);
 742 }
 743
 744 void wxCairoBrushData::Init()
 745 {
 746     m_brushPattern = NULL;
 747 }
 748
 749 //-----------------------------------------------------------------------------
 750 // wxCairoFontData implementation
 751 //-----------------------------------------------------------------------------
 752
 753 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 754                          const wxColour& col ) : wxGraphicsObjectRefData(renderer)
 755 {
 756     m_red = col.Red()/255.0;
 757     m_green = col.Green()/255.0;
 758     m_blue = col.Blue()/255.0;
 759     m_alpha = col.Alpha()/255.0;
 760     m_size = font.GetPointSize();
 761     m_underlined = font.GetUnderlined();
 762
 763 #ifdef __WXMAC__
 764     m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
 765 #elif defined(__WXGTK__)
 766     m_font = pango_font_description_copy( font.GetNativeFontInfo()->description );
 767 #else
 768     m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
 769     m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
 770     m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
 771 #endif
 772 }
 773
 774 wxCairoFontData::~wxCairoFontData()
 775 {
 776 #ifdef __WXMAC__
 777     cairo_font_face_destroy( m_font );
 778 #elif defined(__WXGTK__)
 779     pango_font_description_free( m_font );
 780 #else
 781 #endif
 782 }
 783
 784 void wxCairoFontData::Apply( wxGraphicsContext* context )
 785 {
 786     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 787     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 788 #ifdef __WXGTK__
 789     // the rest is done using Pango layouts
 790 #elif defined(__WXMAC__)
 791     cairo_set_font_face(ctext, m_font);
 792     cairo_set_font_size(ctext, m_size );
 793 #else
 794     cairo_select_font_face(ctext, m_fontName, m_slant, m_weight );
 795     cairo_set_font_size(ctext, m_size );
 796 #endif
 797 }
 798
 799 //-----------------------------------------------------------------------------
 800 // wxCairoPathData implementation
 801 //-----------------------------------------------------------------------------
 802
 803 wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
 804     : wxGraphicsPathData(renderer)
 805 {
 806     if (pathcontext)
 807     {
 808         m_pathContext = pathcontext;
 809     }
 810     else
 811     {
 812         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 813         m_pathContext = cairo_create(surface);
 814         cairo_surface_destroy (surface);
 815     }
 816 }
 817
 818 wxCairoPathData::~wxCairoPathData()
 819 {
 820     cairo_destroy(m_pathContext);
 821 }
 822
 823 wxGraphicsObjectRefData *wxCairoPathData::Clone() const
 824 {
 825     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 826     cairo_t* pathcontext = cairo_create(surface);
 827     cairo_surface_destroy (surface);
 828
 829     cairo_path_t* path = cairo_copy_path(m_pathContext);
 830     cairo_append_path(pathcontext, path);
 831     cairo_path_destroy(path);
 832     return new wxCairoPathData( GetRenderer() ,pathcontext);
 833 }
 834
 835
 836 void* wxCairoPathData::GetNativePath() const
 837 {
 838     return cairo_copy_path(m_pathContext) ;
 839 }
 840
 841 void wxCairoPathData::UnGetNativePath(void *p) const
 842 {
 843     cairo_path_destroy((cairo_path_t*)p);
 844 }
 845
 846 //
 847 // The Primitives
 848 //
 849
 850 void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
 851 {
 852     cairo_move_to(m_pathContext,x,y);
 853 }
 854
 855 void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
 856 {
 857     cairo_line_to(m_pathContext,x,y);
 858 }
 859
 860 void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
 861 {
 862     cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
 863     cairo_append_path(m_pathContext, p);
 864     UnGetNativePath(p);
 865 }
 866
 867 void wxCairoPathData::CloseSubpath()
 868 {
 869     cairo_close_path(m_pathContext);
 870 }
 871
 872 void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 873 {
 874     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
 875 }
 876
 877 // gets the last point of the current path, (0,0) if not yet set
 878 void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
 879 {
 880     double dx,dy;
 881     cairo_get_current_point(m_pathContext,&dx,&dy);
 882     if (x)
 883         *x = dx;
 884     if (y)
 885         *y = dy;
 886 }
 887
 888 void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 889 {
 890     // as clockwise means positive in our system (y pointing downwards)
 891     // TODO make this interpretation dependent of the
 892     // real device trans
 893     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
 894         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
 895     else
 896         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
 897 }
 898
 899 // transforms each point of this path by the matrix
 900 void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
 901 {
 902     // as we don't have a true path object, we have to apply the inverse
 903     // matrix to the context
 904     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
 905     cairo_matrix_invert( &m );
 906     cairo_transform(m_pathContext,&m);
 907 }
 908
 909 // gets the bounding box enclosing all points (possibly including control points)
 910 void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
 911 {
 912     double x1,y1,x2,y2;
 913
 914     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
 915     if ( x2 < x1 )
 916     {
 917         *x = x2;
 918         *w = x1-x2;
 919     }
 920     else
 921     {
 922         *x = x1;
 923         *w = x2-x1;
 924     }
 925
 926     if( y2 < y1 )
 927     {
 928         *y = y2;
 929         *h = y1-y2;
 930     }
 931     else
 932     {
 933         *y = y1;
 934         *h = y2-y1;
 935     }
 936 }
 937
 938 bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
 939 {
 940     cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
 941     return cairo_in_fill( m_pathContext, x, y) != 0;
 942 }
 943
 944 //-----------------------------------------------------------------------------
 945 // wxCairoMatrixData implementation
 946 //-----------------------------------------------------------------------------
 947
 948 wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
 949     : wxGraphicsMatrixData(renderer)
 950 {
 951     if ( matrix )
 952         m_matrix = *matrix;
 953 }
 954
 955 wxCairoMatrixData::~wxCairoMatrixData()
 956 {
 957     // nothing to do
 958 }
 959
 960 wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
 961 {
 962     return new wxCairoMatrixData(GetRenderer(),&m_matrix);
 963 }
 964
 965 // concatenates the matrix
 966 void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
 967 {
 968     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
 969 }
 970
 971 // sets the matrix to the respective values
 972 void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 973                         wxDouble tx, wxDouble ty)
 974 {
 975     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
 976 }
 977
 978 // gets the component valuess of the matrix
 979 void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 980                             wxDouble* d, wxDouble* tx, wxDouble* ty) const
 981 {
 982     if (a)  *a = m_matrix.xx;
 983     if (b)  *b = m_matrix.yx;
 984     if (c)  *c = m_matrix.xy;
 985     if (d)  *d = m_matrix.yy;
 986     if (tx) *tx= m_matrix.x0;
 987     if (ty) *ty= m_matrix.y0;
 988 }
 989
 990 // makes this the inverse matrix
 991 void wxCairoMatrixData::Invert()
 992 {
 993     cairo_matrix_invert( &m_matrix );
 994 }
 995
 996 // returns true if the elements of the transformation matrix are equal ?
 997 bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 998 {
 999     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
1000     return (
1001         m_matrix.xx == tm->xx &&
1002         m_matrix.yx == tm->yx &&
1003         m_matrix.xy == tm->xy &&
1004         m_matrix.yy == tm->yy &&
1005         m_matrix.x0 == tm->x0 &&
1006         m_matrix.y0 == tm->y0 ) ;
1007 }
1008
1009 // return true if this is the identity matrix
1010 bool wxCairoMatrixData::IsIdentity() const
1011 {
1012     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
1013         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
1014 }
1015
1016 //
1017 // transformation
1018 //
1019
1020 // add the translation to this matrix
1021 void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
1022 {
1023     cairo_matrix_translate( &m_matrix, dx, dy) ;
1024 }
1025
1026 // add the scale to this matrix
1027 void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1028 {
1029     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
1030 }
1031
1032 // add the rotation to this matrix (radians)
1033 void wxCairoMatrixData::Rotate( wxDouble angle )
1034 {
1035     cairo_matrix_rotate( &m_matrix, angle) ;
1036 }
1037
1038 //
1039 // apply the transforms
1040 //
1041
1042 // applies that matrix to the point
1043 void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1044 {
1045     double lx = *x, ly = *y ;
1046     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
1047     *x = lx;
1048     *y = ly;
1049 }
1050
1051 // applies the matrix except for translations
1052 void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1053 {
1054     double lx = *dx, ly = *dy ;
1055     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
1056     *dx = lx;
1057     *dy = ly;
1058 }
1059
1060 // returns the native representation
1061 void * wxCairoMatrixData::GetNativeMatrix() const
1062 {
1063     return (void*) &m_matrix;
1064 }
1065
1066 // wxCairoBitmap implementation
1067 //-----------------------------------------------------------------------------
1068
1069 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
1070     wxGraphicsObjectRefData( renderer )
1071 {
1072     m_surface = bitmap;
1073     m_pattern = cairo_pattern_create_for_surface(m_surface);
1074 }
1075
1076 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
1077 {
1078     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
1079
1080 #ifdef wxHAS_RAW_BITMAP
1081     int bw = m_width = bmp.GetWidth();
1082     int bh = m_height = bmp.GetHeight();
1083     wxBitmap bmpSource = bmp;  // we need a non-const instance
1084     m_buffer = new unsigned char[bw*bh*4];
1085     wxUint32* data = (wxUint32*)m_buffer;
1086
1087     // Create a surface object and copy the bitmap pixel data to it.  if the
1088     // image has alpha (or a mask represented as alpha) then we'll use a
1089     // different format and iterator than if it doesn't...
1090     if (bmpSource.HasAlpha() || bmpSource.GetMask())
1091     {
1092         m_surface = cairo_image_surface_create_for_data(
1093             m_buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
1094         wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1095         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1096
1097         wxAlphaPixelData::Iterator p(pixData);
1098         for (int y=0; y<bh; y++)
1099         {
1100             wxAlphaPixelData::Iterator rowStart = p;
1101             for (int x=0; x<bw; x++)
1102             {
1103                 // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
1104                 // with alpha in the upper 8 bits, then red, then green, then
1105                 // blue. The 32-bit quantities are stored native-endian.
1106                 // Pre-multiplied alpha is used.
1107                 unsigned char alpha = p.Alpha();
1108                 if (alpha == 0)
1109                     *data = 0;
1110                 else
1111                     *data = ( alpha                      << 24
1112                               | (p.Red() * alpha/255)    << 16
1113                               | (p.Green() * alpha/255)  <<  8
1114                               | (p.Blue() * alpha/255) );
1115                 ++data;
1116                 ++p;
1117             }
1118             p = rowStart;
1119             p.OffsetY(pixData, 1);
1120         }
1121     }
1122     else  // no alpha
1123     {
1124         m_surface = cairo_image_surface_create_for_data(
1125             m_buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
1126         wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1127         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1128
1129         wxNativePixelData::Iterator p(pixData);
1130         for (int y=0; y<bh; y++)
1131         {
1132             wxNativePixelData::Iterator rowStart = p;
1133             for (int x=0; x<bw; x++)
1134             {
1135                 // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
1136                 // the upper 8 bits unused. Red, Green, and Blue are stored in
1137                 // the remaining 24 bits in that order.  The 32-bit quantities
1138                 // are stored native-endian.
1139                 *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
1140                 ++data;
1141                 ++p;
1142             }
1143             p = rowStart;
1144             p.OffsetY(pixData, 1);
1145         }
1146     }
1147     m_pattern = cairo_pattern_create_for_surface(m_surface);
1148 #endif // wxHAS_RAW_BITMAP
1149 }
1150
1151 wxCairoBitmapData::~wxCairoBitmapData()
1152 {
1153     if (m_pattern)
1154         cairo_pattern_destroy(m_pattern);
1155
1156     if (m_surface)
1157         cairo_surface_destroy(m_surface);
1158
1159     delete [] m_buffer;
1160 }
1161
1162
1163
1164 //-----------------------------------------------------------------------------
1165 // wxCairoContext implementation
1166 //-----------------------------------------------------------------------------
1167
1168 class wxCairoOffsetHelper
1169 {
1170 public :
1171     wxCairoOffsetHelper( cairo_t* ctx , bool offset )
1172     {
1173         m_ctx = ctx;
1174         m_offset = offset;
1175         if ( m_offset )
1176              cairo_translate( m_ctx, 0.5, 0.5 );
1177     }
1178     ~wxCairoOffsetHelper( )
1179     {
1180         if ( m_offset )
1181             cairo_translate( m_ctx, -0.5, -0.5 );
1182     }
1183 public :
1184     cairo_t* m_ctx;
1185     bool m_offset;
1186 } ;
1187
1188 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
1189 : wxGraphicsContext(renderer)
1190 {
1191 #ifdef __WXGTK20__
1192     const wxDCImpl *impl = dc.GetImpl();
1193     Init( (cairo_t*) impl->GetCairoContext() );
1194
1195     wxSize sz = dc.GetSize();
1196     m_width = sz.x;
1197     m_height = sz.y;
1198
1199     wxPoint org = dc.GetDeviceOrigin();
1200     cairo_translate( m_context, org.x, org.y );
1201
1202     double sx,sy;
1203     dc.GetUserScale( &sx, &sy );
1204     cairo_scale( m_context, sx, sy );
1205
1206     org = dc.GetLogicalOrigin();
1207     cairo_translate( m_context, -org.x, -org.y );
1208 #endif
1209 }
1210
1211 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
1212 : wxGraphicsContext(renderer)
1213 {
1214     int width, height;
1215     dc.GetSize( &width, &height );
1216     m_width = width;
1217     m_height = height;
1218
1219     m_enableOffset = true;
1220
1221 #ifdef __WXGTK20__
1222     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1223     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1224
1225 #if 0
1226     wxGraphicsMatrix matrix = CreateMatrix();
1227
1228     wxPoint org = dc.GetDeviceOrigin();
1229     matrix.Translate( org.x, org.y );
1230
1231     org = dc.GetLogicalOrigin();
1232     matrix.Translate( -org.x, -org.y );
1233
1234     double sx,sy;
1235     dc.GetUserScale( &sx, &sy );
1236     matrix.Scale( sx, sy );
1237
1238     ConcatTransform( matrix );
1239 #endif
1240 #endif
1241
1242 #ifdef __WXMAC__
1243     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1244     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1245     Init( cairo_create( surface ) );
1246     cairo_surface_destroy( surface );
1247 #endif
1248 }
1249
1250 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
1251 : wxGraphicsContext(renderer)
1252 {
1253     int width, height;
1254     dc.GetSize( &width, &height );
1255     m_width = width;
1256     m_height = height;
1257
1258     m_enableOffset = true;
1259
1260 #ifdef __WXGTK20__
1261     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1262     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1263
1264 #if 0
1265     wxGraphicsMatrix matrix = CreateMatrix();
1266
1267     wxPoint org = dc.GetDeviceOrigin();
1268     matrix.Translate( org.x, org.y );
1269
1270     org = dc.GetLogicalOrigin();
1271     matrix.Translate( -org.x, -org.y );
1272
1273     double sx,sy;
1274     dc.GetUserScale( &sx, &sy );
1275     matrix.Scale( sx, sy );
1276
1277     ConcatTransform( matrix );
1278 #endif
1279 #endif
1280
1281 #ifdef __WXMAC__
1282     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1283     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1284     Init( cairo_create( surface ) );
1285     cairo_surface_destroy( surface );
1286 #endif
1287 }
1288
1289 #ifdef __WXGTK20__
1290 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
1291 : wxGraphicsContext(renderer)
1292 {
1293     Init( gdk_cairo_create( drawable ) );
1294
1295     int width, height;
1296     gdk_drawable_get_size( drawable, &width, &height );
1297     m_width = width;
1298     m_height = height;
1299 }
1300 #endif
1301
1302 #ifdef __WXMSW__
1303 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
1304 : wxGraphicsContext(renderer)
1305 {
1306     m_mswSurface = cairo_win32_surface_create(handle);
1307     Init( cairo_create(m_mswSurface) );
1308     m_width =
1309     m_height = 0;
1310 }
1311 #endif
1312
1313
1314 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1315 : wxGraphicsContext(renderer)
1316 {
1317     Init( context );
1318     m_width =
1319     m_height = 0;
1320 }
1321
1322 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1323 : wxGraphicsContext(renderer)
1324 {
1325     m_enableOffset = true;
1326 #ifdef __WXGTK__
1327     // something along these lines (copied from dcclient)
1328
1329     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1330     // code should still be able to create wxClientDCs for them, so we will
1331     // use the parent window here then.
1332     if (window->m_wxwindow == NULL)
1333     {
1334         window = window->GetParent();
1335     }
1336
1337     wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
1338
1339     Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
1340
1341     wxSize sz = window->GetSize();
1342     m_width = sz.x;
1343     m_height = sz.y;
1344 #endif
1345 }
1346
1347 wxCairoContext::~wxCairoContext()
1348 {
1349     if ( m_context )
1350     {
1351         PopState();
1352 #ifdef __WXMSW__
1353     m_mswSurface = cairo_win32_surface_create((HDC)window->GetHandle());
1354     m_context = cairo_create(m_mswSurface);
1355 #endif
1356         PopState();
1357         cairo_destroy(m_context);
1358     }
1359 #ifdef __WXMSW__
1360     if ( m_mswSurface )
1361         cairo_surface_destroy(m_mswSurface);
1362 #endif
1363 }
1364
1365 void wxCairoContext::Init(cairo_t *context)
1366 {
1367     m_context = context ;
1368     PushState();
1369     PushState();
1370 }
1371
1372
1373 void wxCairoContext::Clip( const wxRegion& region )
1374 {
1375     // Create a path with all the rectangles in the region
1376     wxGraphicsPath path = GetRenderer()->CreatePath();
1377     wxRegionIterator ri(region);
1378     while (ri)
1379     {
1380         path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
1381         ++ri;
1382     }
1383
1384     // Put it in the context
1385     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1386     cairo_append_path(m_context, cp);
1387
1388     // clip to that path
1389     cairo_clip(m_context);
1390     path.UnGetNativePath(cp);
1391 }
1392
1393 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1394 {
1395     // Create a path with this rectangle
1396     wxGraphicsPath path = GetRenderer()->CreatePath();
1397     path.AddRectangle(x,y,w,h);
1398
1399     // Put it in the context
1400     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1401     cairo_append_path(m_context, cp);
1402
1403     // clip to that path
1404     cairo_clip(m_context);
1405     path.UnGetNativePath(cp);
1406 }
1407
1408 void wxCairoContext::ResetClip()
1409 {
1410     cairo_reset_clip(m_context);
1411 }
1412
1413
1414 void wxCairoContext::StrokePath( const wxGraphicsPath& path )
1415 {
1416     if ( !m_pen.IsNull() )
1417     {
1418         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1419         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1420         cairo_append_path(m_context,cp);
1421         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1422         cairo_stroke(m_context);
1423         path.UnGetNativePath(cp);
1424     }
1425 }
1426
1427 void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1428 {
1429     if ( !m_brush.IsNull() )
1430     {
1431         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1432         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1433         cairo_append_path(m_context,cp);
1434         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1435         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1436         cairo_fill(m_context);
1437         path.UnGetNativePath(cp);
1438     }
1439 }
1440
1441 void wxCairoContext::Rotate( wxDouble angle )
1442 {
1443     cairo_rotate(m_context,angle);
1444 }
1445
1446 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1447 {
1448     cairo_translate(m_context,dx,dy);
1449 }
1450
1451 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1452 {
1453     cairo_scale(m_context,xScale,yScale);
1454 }
1455
1456 // concatenates this transform with the current transform of this context
1457 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1458 {
1459     cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
1460 }
1461
1462 // sets the transform of this context
1463 void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
1464 {
1465     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
1466 }
1467
1468 // gets the matrix of this context
1469 wxGraphicsMatrix wxCairoContext::GetTransform() const
1470 {
1471     wxGraphicsMatrix matrix = CreateMatrix();
1472     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
1473     return matrix;
1474 }
1475
1476
1477
1478 void wxCairoContext::PushState()
1479 {
1480     cairo_save(m_context);
1481 }
1482
1483 void wxCairoContext::PopState()
1484 {
1485     cairo_restore(m_context);
1486 }
1487
1488 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1489 {
1490     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1491     DrawBitmap(bitmap, x, y, w, h);
1492
1493 }
1494
1495 void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1496 {
1497     PushState();
1498
1499     // In case we're scaling the image by using a width and height different
1500     // than the bitmap's size create a pattern transformation on the surface and
1501     // draw the transformed pattern.
1502     wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
1503     cairo_pattern_t* pattern = data->GetCairoPattern();
1504     wxSize size = data->GetSize();
1505
1506     wxDouble scaleX = w / size.GetWidth();
1507     wxDouble scaleY = h / size.GetHeight();
1508
1509     // prepare to draw the image
1510     cairo_translate(m_context, x, y);
1511     cairo_scale(m_context, scaleX, scaleY);
1512     cairo_set_source(m_context, pattern);
1513     // use the original size here since the context is scaled already...
1514     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
1515     // fill the rectangle using the pattern
1516     cairo_fill(m_context);
1517
1518     PopState();
1519 }
1520
1521 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1522 {
1523     // An icon is a bitmap on wxGTK, so do this the easy way.  When we want to
1524     // start using the Cairo backend on other platforms then we may need to
1525     // fiddle with this...
1526     DrawBitmap(icon, x, y, w, h);
1527 }
1528
1529
1530 void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
1531 {
1532     wxCHECK_RET( !m_font.IsNull(),
1533                  wxT("wxCairoContext::DrawText - no valid font set") );
1534
1535     if ( str.empty())
1536         return;
1537
1538     const wxCharBuffer data = str.utf8_str();
1539     if ( !data )
1540         return;
1541
1542     ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
1543
1544 #ifdef __WXGTK__
1545     size_t datalen = strlen(data);
1546
1547     PangoLayout *layout = pango_cairo_create_layout (m_context);
1548     wxCairoFontData* font_data = (wxCairoFontData*) m_font.GetRefData();
1549     pango_layout_set_font_description( layout, font_data->GetFont());
1550     pango_layout_set_text(layout, data, datalen);
1551
1552     if (font_data->GetUnderlined())
1553     {
1554         PangoAttrList *attrs = pango_attr_list_new();
1555         PangoAttribute *attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1556         pango_attr_list_insert(attrs, attr);
1557         pango_layout_set_attributes(layout, attrs);
1558         pango_attr_list_unref(attrs);
1559     }
1560
1561     cairo_move_to(m_context, x, y);
1562     pango_cairo_show_layout (m_context, layout);
1563
1564     g_object_unref (layout);
1565 #else
1566     // Cairo's x,y for drawing text is at the baseline, so we need to adjust
1567     // the position we move to by the ascent.
1568     cairo_font_extents_t fe;
1569     cairo_font_extents(m_context, &fe);
1570     cairo_move_to(m_context, x, y+fe.ascent);
1571
1572     cairo_show_text(m_context, data);
1573 #endif
1574 }
1575
1576 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1577                                     wxDouble *descent, wxDouble *externalLeading ) const
1578 {
1579     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
1580
1581     if ( width )
1582         *width = 0;
1583     if ( height )
1584         *height = 0;
1585     if ( descent )
1586         *descent = 0;
1587     if ( externalLeading )
1588         *externalLeading = 0;
1589
1590     if ( str.empty())
1591         return;
1592
1593 #ifdef __WXGTK__
1594     int w, h;
1595
1596     PangoLayout *layout = pango_cairo_create_layout (m_context);
1597     pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
1598     const wxCharBuffer data = str.utf8_str();
1599     if ( !data )
1600     {
1601         return;
1602     }
1603     pango_layout_set_text( layout, data, strlen(data) );
1604     pango_layout_get_pixel_size (layout, &w, &h);
1605     if ( width )
1606         *width = w;
1607     if ( height )
1608         *height = h;
1609     if (descent)
1610     {
1611         PangoLayoutIter *iter = pango_layout_get_iter(layout);
1612         int baseline = pango_layout_iter_get_baseline(iter);
1613         pango_layout_iter_free(iter);
1614         *descent = h - PANGO_PIXELS(baseline);
1615     }
1616     g_object_unref (layout);
1617 #else
1618     ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this);
1619
1620     if (width)
1621     {
1622         const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
1623         cairo_text_extents_t te;
1624         cairo_text_extents(m_context, buf, &te);
1625         *width = te.width;
1626     }
1627
1628     if (height || descent || externalLeading)
1629     {
1630         cairo_font_extents_t fe;
1631         cairo_font_extents(m_context, &fe);
1632
1633         // some backends have negative descents
1634
1635         if ( fe.descent < 0 )
1636             fe.descent = -fe.descent;
1637
1638         if ( fe.height < (fe.ascent + fe.descent ) )
1639         {
1640             // some backends are broken re height ... (eg currently ATSUI)
1641             fe.height = fe.ascent + fe.descent;
1642         }
1643
1644         if (height)
1645             *height = fe.height;
1646         if ( descent )
1647             *descent = fe.descent;
1648         if ( externalLeading )
1649             *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
1650     }
1651 #endif
1652 }
1653
1654 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1655 {
1656     widths.Empty();
1657     widths.Add(0, text.length());
1658
1659     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
1660
1661     if (text.empty())
1662         return;
1663
1664     // TODO
1665 }
1666
1667 void * wxCairoContext::GetNativeContext()
1668 {
1669     return m_context;
1670 }
1671
1672 bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
1673 {
1674     if (m_antialias == antialias)
1675         return true;
1676
1677     m_antialias = antialias;
1678
1679     cairo_antialias_t antialiasMode;
1680     switch (antialias)
1681     {
1682         case wxANTIALIAS_DEFAULT:
1683             antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
1684             break;
1685         case wxANTIALIAS_NONE:
1686             antialiasMode = CAIRO_ANTIALIAS_NONE;
1687             break;
1688         default:
1689             return false;
1690     }
1691     cairo_set_antialias(m_context, antialiasMode);
1692     return true;
1693 }
1694
1695 bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
1696 {
1697     if ( m_composition == op )
1698         return true;
1699
1700     m_composition = op;
1701     cairo_operator_t cop;
1702     switch (op)
1703     {
1704         case wxCOMPOSITION_CLEAR:
1705             cop = CAIRO_OPERATOR_CLEAR;
1706             break;
1707         case wxCOMPOSITION_SOURCE:
1708             cop = CAIRO_OPERATOR_SOURCE;
1709             break;
1710         case wxCOMPOSITION_OVER:
1711             cop = CAIRO_OPERATOR_OVER;
1712             break;
1713         case wxCOMPOSITION_IN:
1714             cop = CAIRO_OPERATOR_IN;
1715             break;
1716         case wxCOMPOSITION_OUT:
1717             cop = CAIRO_OPERATOR_OUT;
1718             break;
1719         case wxCOMPOSITION_ATOP:
1720             cop = CAIRO_OPERATOR_ATOP;
1721             break;
1722         case wxCOMPOSITION_DEST:
1723             cop = CAIRO_OPERATOR_DEST;
1724             break;
1725         case wxCOMPOSITION_DEST_OVER:
1726             cop = CAIRO_OPERATOR_DEST_OVER;
1727             break;
1728         case wxCOMPOSITION_DEST_IN:
1729             cop = CAIRO_OPERATOR_DEST_IN;
1730             break;
1731         case wxCOMPOSITION_DEST_OUT:
1732             cop = CAIRO_OPERATOR_DEST_OUT;
1733             break;
1734         case wxCOMPOSITION_DEST_ATOP:
1735             cop = CAIRO_OPERATOR_DEST_ATOP;
1736             break;
1737         case wxCOMPOSITION_XOR:
1738             cop = CAIRO_OPERATOR_XOR;
1739             break;
1740         case wxCOMPOSITION_ADD:
1741             cop = CAIRO_OPERATOR_ADD;
1742             break;
1743         default:
1744             return false;
1745     }
1746     cairo_set_operator(m_context, cop);
1747     return true;
1748 }
1749
1750 void wxCairoContext::BeginLayer(wxDouble opacity)
1751 {
1752     m_layerOpacities.push_back(opacity);
1753     cairo_push_group(m_context);
1754 }
1755
1756 void wxCairoContext::EndLayer()
1757 {
1758     float opacity = m_layerOpacities.back();
1759     m_layerOpacities.pop_back();
1760     cairo_pop_group_to_source(m_context);
1761     cairo_paint_with_alpha(m_context,opacity);
1762 }
1763
1764 //-----------------------------------------------------------------------------
1765 // wxCairoRenderer declaration
1766 //-----------------------------------------------------------------------------
1767
1768 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
1769 {
1770 public :
1771     wxCairoRenderer() {}
1772
1773     virtual ~wxCairoRenderer() {}
1774
1775     // Context
1776
1777     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1778     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
1779     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
1780
1781     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1782
1783     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1784
1785     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1786
1787     virtual wxGraphicsContext * CreateMeasuringContext();
1788
1789     // Path
1790
1791     virtual wxGraphicsPath CreatePath();
1792
1793     // Matrix
1794
1795     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1796         wxDouble tx=0.0, wxDouble ty=0.0);
1797
1798
1799     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1800
1801     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1802
1803     virtual wxGraphicsBrush
1804     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
1805                               wxDouble x2, wxDouble y2,
1806                               const wxGraphicsGradientStops& stops);
1807
1808     virtual wxGraphicsBrush
1809     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
1810                               wxDouble xc, wxDouble yc,
1811                               wxDouble radius,
1812                               const wxGraphicsGradientStops& stops);
1813
1814     // sets the font
1815     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1816
1817     // create a native bitmap representation
1818     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
1819
1820     // create a graphics bitmap from a native bitmap
1821     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
1822
1823     // create a subimage from a native image representation
1824     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
1825
1826 private :
1827     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
1828 } ;
1829
1830 //-----------------------------------------------------------------------------
1831 // wxCairoRenderer implementation
1832 //-----------------------------------------------------------------------------
1833
1834 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
1835
1836 static wxCairoRenderer gs_cairoGraphicsRenderer;
1837 // temporary hack to allow creating a cairo context on any platform
1838 extern wxGraphicsRenderer* gCairoRenderer;
1839 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
1840
1841 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
1842 {
1843     return new wxCairoContext(this,dc);
1844 }
1845
1846 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
1847 {
1848     return new wxCairoContext(this,dc);
1849 }
1850
1851 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
1852 {
1853 #ifdef __WXGTK20__
1854     const wxDCImpl *impl = dc.GetImpl();
1855     cairo_t* context = (cairo_t*) impl->GetCairoContext();
1856     if (context)
1857        return new wxCairoContext(this,dc);
1858     else
1859 #endif
1860        return NULL;
1861 }
1862
1863 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
1864 {
1865 #ifdef __WXMSW__
1866     return new wxCairoContext(this,(HDC)context);
1867 #else
1868     return new wxCairoContext(this,(cairo_t*)context);
1869 #endif
1870 }
1871
1872
1873 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
1874 {
1875 #ifdef __WXGTK__
1876     return new wxCairoContext(this,(GdkDrawable*)window);
1877 #else
1878     return NULL;
1879 #endif
1880 }
1881
1882 wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
1883 {
1884 #ifdef __WXGTK__
1885     return CreateContextFromNativeWindow(gdk_get_default_root_window());
1886 #endif
1887     return NULL;
1888     // TODO
1889 }
1890
1891 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
1892 {
1893     return new wxCairoContext(this, window );
1894 }
1895
1896 // Path
1897
1898 wxGraphicsPath wxCairoRenderer::CreatePath()
1899 {
1900     wxGraphicsPath path;
1901     path.SetRefData( new wxCairoPathData(this) );
1902     return path;
1903 }
1904
1905
1906 // Matrix
1907
1908 wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1909                                                 wxDouble tx, wxDouble ty)
1910
1911 {
1912     wxGraphicsMatrix m;
1913     wxCairoMatrixData* data = new wxCairoMatrixData( this );
1914     data->Set( a,b,c,d,tx,ty ) ;
1915     m.SetRefData(data);
1916     return m;
1917 }
1918
1919 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
1920 {
1921     if ( !pen.Ok() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT )
1922         return wxNullGraphicsPen;
1923     else
1924     {
1925         wxGraphicsPen p;
1926         p.SetRefData(new wxCairoPenData( this, pen ));
1927         return p;
1928     }
1929 }
1930
1931 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
1932 {
1933     if ( !brush.Ok() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT )
1934         return wxNullGraphicsBrush;
1935     else
1936     {
1937         wxGraphicsBrush p;
1938         p.SetRefData(new wxCairoBrushData( this, brush ));
1939         return p;
1940     }
1941 }
1942
1943 wxGraphicsBrush
1944 wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
1945                                            wxDouble x2, wxDouble y2,
1946                                            const wxGraphicsGradientStops& stops)
1947 {
1948     wxGraphicsBrush p;
1949     wxCairoBrushData* d = new wxCairoBrushData( this );
1950     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
1951     p.SetRefData(d);
1952     return p;
1953 }
1954
1955 wxGraphicsBrush
1956 wxCairoRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
1957                                            wxDouble xc, wxDouble yc, wxDouble r,
1958                                            const wxGraphicsGradientStops& stops)
1959 {
1960     wxGraphicsBrush p;
1961     wxCairoBrushData* d = new wxCairoBrushData( this );
1962     d->CreateRadialGradientBrush(xo, yo, xc, yc, r, stops);
1963     p.SetRefData(d);
1964     return p;
1965 }
1966
1967 // sets the font
1968 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
1969 {
1970     if ( font.Ok() )
1971     {
1972         wxGraphicsFont p;
1973         p.SetRefData(new wxCairoFontData( this , font, col ));
1974         return p;
1975     }
1976     else
1977         return wxNullGraphicsFont;
1978 }
1979
1980 wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
1981 {
1982     if ( bmp.Ok() )
1983     {
1984         wxGraphicsBitmap p;
1985         p.SetRefData(new wxCairoBitmapData( this , bmp ));
1986         return p;
1987     }
1988     else
1989         return wxNullGraphicsBitmap;
1990 }
1991
1992 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
1993 {
1994     if ( bitmap != NULL )
1995     {
1996         wxGraphicsBitmap p;
1997         p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
1998         return p;
1999     }
2000     else
2001         return wxNullGraphicsBitmap;
2002 }
2003
2004 wxGraphicsBitmap
2005 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
2006                                  wxDouble WXUNUSED(x),
2007                                  wxDouble WXUNUSED(y),
2008                                  wxDouble WXUNUSED(w),
2009                                  wxDouble WXUNUSED(h))
2010 {
2011     wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
2012     return wxNullGraphicsBitmap;
2013 }
2014
2015 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2016 {
2017     return &gs_cairoGraphicsRenderer;
2018 }
2019
2020 #else // !wxUSE_CAIRO
2021
2022 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2023 {
2024     return NULL;
2025 }
2026
2027 #endif  // wxUSE_CAIRO/!wxUSE_CAIRO
2028
2029 // MSW and OS X have their own native default renderers, but the other ports
2030 // use Cairo by default
2031 #if !(defined(__WXMSW__) || defined(__WXOSX__))
2032 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2033 {
2034     return GetCairoRenderer();
2035 }
2036 #endif // !(__WXMSW__ || __WXOSX__)
2037
2038 #endif // wxUSE_GRAPHICS_CONTEXT