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 };
 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 #ifdef __WXMSW__
 334     wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
 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 SetInterpolationQuality(wxInterpolationQuality interpolation);
 372
 373     virtual bool SetCompositionMode(wxCompositionMode op);
 374
 375     virtual void BeginLayer(wxDouble opacity);
 376
 377     virtual void EndLayer();
 378
 379     virtual void StrokePath( const wxGraphicsPath& p );
 380     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
 381
 382     virtual void Translate( wxDouble dx , wxDouble dy );
 383     virtual void Scale( wxDouble xScale , wxDouble yScale );
 384     virtual void Rotate( wxDouble angle );
 385
 386     // concatenates this transform with the current transform of this context
 387     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 388
 389     // sets the transform of this context
 390     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 391
 392     // gets the matrix of this context
 393     virtual wxGraphicsMatrix GetTransform() const;
 394
 395     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 396     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 397     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 398     virtual void PushState();
 399     virtual void PopState();
 400
 401     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 402                                 wxDouble *descent, wxDouble *externalLeading ) const;
 403     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 404
 405 protected:
 406     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
 407
 408 private:
 409     void Init(cairo_t *context);
 410
 411     cairo_t* m_context;
 412
 413     wxVector<float> m_layerOpacities;
 414
 415     wxDECLARE_NO_COPY_CLASS(wxCairoContext);
 416 };
 417
 418 //-----------------------------------------------------------------------------
 419 // wxCairoPenData implementation
 420 //-----------------------------------------------------------------------------
 421
 422 wxCairoPenData::~wxCairoPenData()
 423 {
 424     delete[] m_userLengths;
 425 }
 426
 427 void wxCairoPenData::Init()
 428 {
 429     m_lengths = NULL;
 430     m_userLengths = NULL;
 431     m_width = 0;
 432     m_count = 0;
 433 }
 434
 435 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 436 : wxGraphicsObjectRefData(renderer)
 437 {
 438     Init();
 439     m_pen = pen;
 440     m_width = m_pen.GetWidth();
 441     if (m_width <= 0.0)
 442         m_width = 0.1;
 443
 444     m_red = m_pen.GetColour().Red()/255.0;
 445     m_green = m_pen.GetColour().Green()/255.0;
 446     m_blue = m_pen.GetColour().Blue()/255.0;
 447     m_alpha = m_pen.GetColour().Alpha()/255.0;
 448
 449     switch ( m_pen.GetCap() )
 450     {
 451     case wxCAP_ROUND :
 452         m_cap = CAIRO_LINE_CAP_ROUND;
 453         break;
 454
 455     case wxCAP_PROJECTING :
 456         m_cap = CAIRO_LINE_CAP_SQUARE;
 457         break;
 458
 459     case wxCAP_BUTT :
 460         m_cap = CAIRO_LINE_CAP_BUTT;
 461         break;
 462
 463     default :
 464         m_cap = CAIRO_LINE_CAP_BUTT;
 465         break;
 466     }
 467
 468     switch ( m_pen.GetJoin() )
 469     {
 470     case wxJOIN_BEVEL :
 471         m_join = CAIRO_LINE_JOIN_BEVEL;
 472         break;
 473
 474     case wxJOIN_MITER :
 475         m_join = CAIRO_LINE_JOIN_MITER;
 476         break;
 477
 478     case wxJOIN_ROUND :
 479         m_join = CAIRO_LINE_JOIN_ROUND;
 480         break;
 481
 482     default :
 483         m_join = CAIRO_LINE_JOIN_MITER;
 484         break;
 485     }
 486
 487     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 488     const double dotted[] =
 489     {
 490         dashUnit , dashUnit + 2.0
 491     };
 492     static const double short_dashed[] =
 493     {
 494         9.0 , 6.0
 495     };
 496     static const double dashed[] =
 497     {
 498         19.0 , 9.0
 499     };
 500     static const double dotted_dashed[] =
 501     {
 502         9.0 , 6.0 , 3.0 , 3.0
 503     };
 504
 505     switch ( m_pen.GetStyle() )
 506     {
 507     case wxPENSTYLE_SOLID :
 508         break;
 509
 510     case wxPENSTYLE_DOT :
 511         m_count = WXSIZEOF(dotted);
 512         m_userLengths = new double[ m_count ] ;
 513         memcpy( m_userLengths, dotted, sizeof(dotted) );
 514         m_lengths = m_userLengths;
 515         break;
 516
 517     case wxPENSTYLE_LONG_DASH :
 518         m_lengths = dashed ;
 519         m_count = WXSIZEOF(dashed);
 520         break;
 521
 522     case wxPENSTYLE_SHORT_DASH :
 523         m_lengths = short_dashed ;
 524         m_count = WXSIZEOF(short_dashed);
 525         break;
 526
 527     case wxPENSTYLE_DOT_DASH :
 528         m_lengths = dotted_dashed ;
 529         m_count = WXSIZEOF(dotted_dashed);
 530         break;
 531
 532     case wxPENSTYLE_USER_DASH :
 533         {
 534             wxDash *wxdashes ;
 535             m_count = m_pen.GetDashes( &wxdashes ) ;
 536             if ((wxdashes != NULL) && (m_count > 0))
 537             {
 538                 m_userLengths = new double[m_count] ;
 539                 for ( int i = 0 ; i < m_count ; ++i )
 540                 {
 541                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 542
 543                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 544                         m_userLengths[i] = dashUnit + 2.0 ;
 545                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 546                         m_userLengths[i] = dashUnit ;
 547                 }
 548             }
 549             m_lengths = m_userLengths ;
 550         }
 551         break;
 552     case wxPENSTYLE_STIPPLE :
 553         {
 554             /*
 555             wxBitmap* bmp = pen.GetStipple();
 556             if ( bmp && bmp->IsOk() )
 557             {
 558             wxDELETE( m_penImage );
 559             wxDELETE( m_penBrush );
 560             m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 561             m_penBrush = new TextureBrush(m_penImage);
 562             m_pen->SetBrush( m_penBrush );
 563             }
 564             */
 565         }
 566         break;
 567     default :
 568         if ( m_pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
 569             && m_pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
 570         {
 571             /*
 572             wxDELETE( m_penBrush );
 573             HatchStyle style = HatchStyleHorizontal;
 574             switch( pen.GetStyle() )
 575             {
 576             case wxPENSTYLE_BDIAGONAL_HATCH :
 577             style = HatchStyleBackwardDiagonal;
 578             break ;
 579             case wxPENSTYLE_CROSSDIAG_HATCH :
 580             style = HatchStyleDiagonalCross;
 581             break ;
 582             case wxPENSTYLE_FDIAGONAL_HATCH :
 583             style = HatchStyleForwardDiagonal;
 584             break ;
 585             case wxPENSTYLE_CROSS_HATCH :
 586             style = HatchStyleCross;
 587             break ;
 588             case wxPENSTYLE_HORIZONTAL_HATCH :
 589             style = HatchStyleHorizontal;
 590             break ;
 591             case wxPENSTYLE_VERTICAL_HATCH :
 592             style = HatchStyleVertical;
 593             break ;
 594
 595             }
 596             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 597             pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
 598             m_pen->SetBrush( m_penBrush )
 599             */
 600         }
 601         break;
 602     }
 603 }
 604
 605 void wxCairoPenData::Apply( wxGraphicsContext* context )
 606 {
 607     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 608     cairo_set_line_width(ctext,m_width);
 609     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 610     cairo_set_line_cap(ctext,m_cap);
 611     cairo_set_line_join(ctext,m_join);
 612     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 613 }
 614
 615 //-----------------------------------------------------------------------------
 616 // wxCairoBrushData implementation
 617 //-----------------------------------------------------------------------------
 618
 619 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 620   : wxGraphicsObjectRefData( renderer )
 621 {
 622     Init();
 623 }
 624
 625 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush )
 626   : wxGraphicsObjectRefData(renderer)
 627 {
 628     Init();
 629
 630     m_red = brush.GetColour().Red()/255.0;
 631     m_green = brush.GetColour().Green()/255.0;
 632     m_blue = brush.GetColour().Blue()/255.0;
 633     m_alpha = brush.GetColour().Alpha()/255.0;
 634     /*
 635     if ( brush.GetStyle() == wxBRUSHSTYLE_SOLID)
 636     {
 637     m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 638     brush.GetColour().Green() , brush.GetColour().Blue() ) );
 639     }
 640     else if ( brush.IsHatch() )
 641     {
 642     HatchStyle style = HatchStyleHorizontal;
 643     switch( brush.GetStyle() )
 644     {
 645     case wxBRUSHSTYLE_BDIAGONAL_HATCH :
 646     style = HatchStyleBackwardDiagonal;
 647     break ;
 648     case wxBRUSHSTYLE_CROSSDIAG_HATCH :
 649     style = HatchStyleDiagonalCross;
 650     break ;
 651     case wxBRUSHSTYLE_FDIAGONAL_HATCH :
 652     style = HatchStyleForwardDiagonal;
 653     break ;
 654     case wxBRUSHSTYLE_CROSS_HATCH :
 655     style = HatchStyleCross;
 656     break ;
 657     case wxBRUSHSTYLE_HORIZONTAL_HATCH :
 658     style = HatchStyleHorizontal;
 659     break ;
 660     case wxBRUSHSTYLE_VERTICAL_HATCH :
 661     style = HatchStyleVertical;
 662     break ;
 663
 664     }
 665     m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 666     brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
 667     }
 668     else
 669     {
 670     wxBitmap* bmp = brush.GetStipple();
 671     if ( bmp && bmp->IsOk() )
 672     {
 673     wxDELETE( m_brushImage );
 674     m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 675     m_brush = new TextureBrush(m_brushImage);
 676     }
 677     }
 678     */
 679 }
 680
 681 wxCairoBrushData::~wxCairoBrushData ()
 682 {
 683     if (m_brushPattern)
 684         cairo_pattern_destroy(m_brushPattern);
 685 }
 686
 687 void wxCairoBrushData::Apply( wxGraphicsContext* context )
 688 {
 689     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 690     if ( m_brushPattern )
 691     {
 692         cairo_set_source(ctext,m_brushPattern);
 693     }
 694     else
 695     {
 696         cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 697     }
 698 }
 699
 700 void wxCairoBrushData::AddGradientStops(const wxGraphicsGradientStops& stops)
 701 {
 702     // loop over all the stops, they include the beginning and ending ones
 703     const unsigned numStops = stops.GetCount();
 704     for ( unsigned n = 0; n < numStops; n++ )
 705     {
 706         const wxGraphicsGradientStop stop = stops.Item(n);
 707
 708         const wxColour col = stop.GetColour();
 709
 710         cairo_pattern_add_color_stop_rgba
 711         (
 712             m_brushPattern,
 713             stop.GetPosition(),
 714             col.Red()/255.0,
 715             col.Green()/255.0,
 716             col.Blue()/255.0,
 717             col.Alpha()/255.0
 718         );
 719     }
 720
 721     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS,
 722                  wxT("Couldn't create cairo pattern"));
 723 }
 724
 725 void
 726 wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 727                                             wxDouble x2, wxDouble y2,
 728                                             const wxGraphicsGradientStops& stops)
 729 {
 730     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 731
 732     AddGradientStops(stops);
 733 }
 734
 735 void
 736 wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 737                                             wxDouble xc, wxDouble yc,
 738                                             wxDouble radius,
 739                                             const wxGraphicsGradientStops& stops)
 740 {
 741     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 742
 743     AddGradientStops(stops);
 744 }
 745
 746 void wxCairoBrushData::Init()
 747 {
 748     m_brushPattern = NULL;
 749 }
 750
 751 //-----------------------------------------------------------------------------
 752 // wxCairoFontData implementation
 753 //-----------------------------------------------------------------------------
 754
 755 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 756                          const wxColour& col ) : wxGraphicsObjectRefData(renderer)
 757 {
 758     m_red = col.Red()/255.0;
 759     m_green = col.Green()/255.0;
 760     m_blue = col.Blue()/255.0;
 761     m_alpha = col.Alpha()/255.0;
 762     m_size = font.GetPointSize();
 763     m_underlined = font.GetUnderlined();
 764
 765 #ifdef __WXMAC__
 766     m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
 767 #elif defined(__WXGTK__)
 768     m_font = pango_font_description_copy( font.GetNativeFontInfo()->description );
 769 #else
 770     m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
 771     m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
 772     m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
 773 #endif
 774 }
 775
 776 wxCairoFontData::~wxCairoFontData()
 777 {
 778 #ifdef __WXMAC__
 779     cairo_font_face_destroy( m_font );
 780 #elif defined(__WXGTK__)
 781     pango_font_description_free( m_font );
 782 #else
 783 #endif
 784 }
 785
 786 void wxCairoFontData::Apply( wxGraphicsContext* context )
 787 {
 788     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 789     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 790 #ifdef __WXGTK__
 791     // the rest is done using Pango layouts
 792 #elif defined(__WXMAC__)
 793     cairo_set_font_face(ctext, m_font);
 794     cairo_set_font_size(ctext, m_size );
 795 #else
 796     cairo_select_font_face(ctext, m_fontName, m_slant, m_weight );
 797     cairo_set_font_size(ctext, m_size );
 798 #endif
 799 }
 800
 801 //-----------------------------------------------------------------------------
 802 // wxCairoPathData implementation
 803 //-----------------------------------------------------------------------------
 804
 805 wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
 806     : wxGraphicsPathData(renderer)
 807 {
 808     if (pathcontext)
 809     {
 810         m_pathContext = pathcontext;
 811     }
 812     else
 813     {
 814         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 815         m_pathContext = cairo_create(surface);
 816         cairo_surface_destroy (surface);
 817     }
 818 }
 819
 820 wxCairoPathData::~wxCairoPathData()
 821 {
 822     cairo_destroy(m_pathContext);
 823 }
 824
 825 wxGraphicsObjectRefData *wxCairoPathData::Clone() const
 826 {
 827     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 828     cairo_t* pathcontext = cairo_create(surface);
 829     cairo_surface_destroy (surface);
 830
 831     cairo_path_t* path = cairo_copy_path(m_pathContext);
 832     cairo_append_path(pathcontext, path);
 833     cairo_path_destroy(path);
 834     return new wxCairoPathData( GetRenderer() ,pathcontext);
 835 }
 836
 837
 838 void* wxCairoPathData::GetNativePath() const
 839 {
 840     return cairo_copy_path(m_pathContext) ;
 841 }
 842
 843 void wxCairoPathData::UnGetNativePath(void *p) const
 844 {
 845     cairo_path_destroy((cairo_path_t*)p);
 846 }
 847
 848 //
 849 // The Primitives
 850 //
 851
 852 void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
 853 {
 854     cairo_move_to(m_pathContext,x,y);
 855 }
 856
 857 void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
 858 {
 859     cairo_line_to(m_pathContext,x,y);
 860 }
 861
 862 void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
 863 {
 864     cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
 865     cairo_append_path(m_pathContext, p);
 866     UnGetNativePath(p);
 867 }
 868
 869 void wxCairoPathData::CloseSubpath()
 870 {
 871     cairo_close_path(m_pathContext);
 872 }
 873
 874 void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 875 {
 876     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
 877 }
 878
 879 // gets the last point of the current path, (0,0) if not yet set
 880 void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
 881 {
 882     double dx,dy;
 883     cairo_get_current_point(m_pathContext,&dx,&dy);
 884     if (x)
 885         *x = dx;
 886     if (y)
 887         *y = dy;
 888 }
 889
 890 void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 891 {
 892     // as clockwise means positive in our system (y pointing downwards)
 893     // TODO make this interpretation dependent of the
 894     // real device trans
 895     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
 896         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
 897     else
 898         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
 899 }
 900
 901 // transforms each point of this path by the matrix
 902 void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
 903 {
 904     // as we don't have a true path object, we have to apply the inverse
 905     // matrix to the context
 906     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
 907     cairo_matrix_invert( &m );
 908     cairo_transform(m_pathContext,&m);
 909 }
 910
 911 // gets the bounding box enclosing all points (possibly including control points)
 912 void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
 913 {
 914     double x1,y1,x2,y2;
 915
 916     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
 917     if ( x2 < x1 )
 918     {
 919         *x = x2;
 920         *w = x1-x2;
 921     }
 922     else
 923     {
 924         *x = x1;
 925         *w = x2-x1;
 926     }
 927
 928     if( y2 < y1 )
 929     {
 930         *y = y2;
 931         *h = y1-y2;
 932     }
 933     else
 934     {
 935         *y = y1;
 936         *h = y2-y1;
 937     }
 938 }
 939
 940 bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
 941 {
 942     cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
 943     return cairo_in_fill( m_pathContext, x, y) != 0;
 944 }
 945
 946 //-----------------------------------------------------------------------------
 947 // wxCairoMatrixData implementation
 948 //-----------------------------------------------------------------------------
 949
 950 wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
 951     : wxGraphicsMatrixData(renderer)
 952 {
 953     if ( matrix )
 954         m_matrix = *matrix;
 955 }
 956
 957 wxCairoMatrixData::~wxCairoMatrixData()
 958 {
 959     // nothing to do
 960 }
 961
 962 wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
 963 {
 964     return new wxCairoMatrixData(GetRenderer(),&m_matrix);
 965 }
 966
 967 // concatenates the matrix
 968 void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
 969 {
 970     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
 971 }
 972
 973 // sets the matrix to the respective values
 974 void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 975                         wxDouble tx, wxDouble ty)
 976 {
 977     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
 978 }
 979
 980 // gets the component valuess of the matrix
 981 void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 982                             wxDouble* d, wxDouble* tx, wxDouble* ty) const
 983 {
 984     if (a)  *a = m_matrix.xx;
 985     if (b)  *b = m_matrix.yx;
 986     if (c)  *c = m_matrix.xy;
 987     if (d)  *d = m_matrix.yy;
 988     if (tx) *tx= m_matrix.x0;
 989     if (ty) *ty= m_matrix.y0;
 990 }
 991
 992 // makes this the inverse matrix
 993 void wxCairoMatrixData::Invert()
 994 {
 995     cairo_matrix_invert( &m_matrix );
 996 }
 997
 998 // returns true if the elements of the transformation matrix are equal ?
 999 bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1000 {
1001     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
1002     return (
1003         m_matrix.xx == tm->xx &&
1004         m_matrix.yx == tm->yx &&
1005         m_matrix.xy == tm->xy &&
1006         m_matrix.yy == tm->yy &&
1007         m_matrix.x0 == tm->x0 &&
1008         m_matrix.y0 == tm->y0 ) ;
1009 }
1010
1011 // return true if this is the identity matrix
1012 bool wxCairoMatrixData::IsIdentity() const
1013 {
1014     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
1015         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
1016 }
1017
1018 //
1019 // transformation
1020 //
1021
1022 // add the translation to this matrix
1023 void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
1024 {
1025     cairo_matrix_translate( &m_matrix, dx, dy) ;
1026 }
1027
1028 // add the scale to this matrix
1029 void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1030 {
1031     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
1032 }
1033
1034 // add the rotation to this matrix (radians)
1035 void wxCairoMatrixData::Rotate( wxDouble angle )
1036 {
1037     cairo_matrix_rotate( &m_matrix, angle) ;
1038 }
1039
1040 //
1041 // apply the transforms
1042 //
1043
1044 // applies that matrix to the point
1045 void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1046 {
1047     double lx = *x, ly = *y ;
1048     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
1049     *x = lx;
1050     *y = ly;
1051 }
1052
1053 // applies the matrix except for translations
1054 void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1055 {
1056     double lx = *dx, ly = *dy ;
1057     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
1058     *dx = lx;
1059     *dy = ly;
1060 }
1061
1062 // returns the native representation
1063 void * wxCairoMatrixData::GetNativeMatrix() const
1064 {
1065     return (void*) &m_matrix;
1066 }
1067
1068 // wxCairoBitmap implementation
1069 //-----------------------------------------------------------------------------
1070
1071 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
1072     wxGraphicsObjectRefData( renderer )
1073 {
1074     m_surface = bitmap;
1075     m_pattern = cairo_pattern_create_for_surface(m_surface);
1076 }
1077
1078 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
1079 {
1080     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
1081
1082 #ifdef wxHAS_RAW_BITMAP
1083     int bw = m_width = bmp.GetWidth();
1084     int bh = m_height = bmp.GetHeight();
1085     wxBitmap bmpSource = bmp;  // we need a non-const instance
1086     m_buffer = new unsigned char[bw*bh*4];
1087     wxUint32* data = (wxUint32*)m_buffer;
1088
1089     // Create a surface object and copy the bitmap pixel data to it.  if the
1090     // image has alpha (or a mask represented as alpha) then we'll use a
1091     // different format and iterator than if it doesn't...
1092     if (bmpSource.HasAlpha() || bmpSource.GetMask())
1093     {
1094         m_surface = cairo_image_surface_create_for_data(
1095             m_buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
1096         wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1097         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1098
1099         wxAlphaPixelData::Iterator p(pixData);
1100         for (int y=0; y<bh; y++)
1101         {
1102             wxAlphaPixelData::Iterator rowStart = p;
1103             for (int x=0; x<bw; x++)
1104             {
1105                 // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
1106                 // with alpha in the upper 8 bits, then red, then green, then
1107                 // blue. The 32-bit quantities are stored native-endian.
1108                 // Pre-multiplied alpha is used.
1109                 unsigned char alpha = p.Alpha();
1110                 if (alpha == 0)
1111                     *data = 0;
1112                 else
1113                     *data = ( alpha                      << 24
1114                               | (p.Red() * alpha/255)    << 16
1115                               | (p.Green() * alpha/255)  <<  8
1116                               | (p.Blue() * alpha/255) );
1117                 ++data;
1118                 ++p;
1119             }
1120             p = rowStart;
1121             p.OffsetY(pixData, 1);
1122         }
1123     }
1124     else  // no alpha
1125     {
1126         m_surface = cairo_image_surface_create_for_data(
1127             m_buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
1128         wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1129         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1130
1131         wxNativePixelData::Iterator p(pixData);
1132         for (int y=0; y<bh; y++)
1133         {
1134             wxNativePixelData::Iterator rowStart = p;
1135             for (int x=0; x<bw; x++)
1136             {
1137                 // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
1138                 // the upper 8 bits unused. Red, Green, and Blue are stored in
1139                 // the remaining 24 bits in that order.  The 32-bit quantities
1140                 // are stored native-endian.
1141                 *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
1142                 ++data;
1143                 ++p;
1144             }
1145             p = rowStart;
1146             p.OffsetY(pixData, 1);
1147         }
1148     }
1149     m_pattern = cairo_pattern_create_for_surface(m_surface);
1150 #endif // wxHAS_RAW_BITMAP
1151 }
1152
1153 wxCairoBitmapData::~wxCairoBitmapData()
1154 {
1155     if (m_pattern)
1156         cairo_pattern_destroy(m_pattern);
1157
1158     if (m_surface)
1159         cairo_surface_destroy(m_surface);
1160
1161     delete [] m_buffer;
1162 }
1163
1164
1165
1166 //-----------------------------------------------------------------------------
1167 // wxCairoContext implementation
1168 //-----------------------------------------------------------------------------
1169
1170 class wxCairoOffsetHelper
1171 {
1172 public :
1173     wxCairoOffsetHelper( cairo_t* ctx , bool offset )
1174     {
1175         m_ctx = ctx;
1176         m_offset = offset;
1177         if ( m_offset )
1178              cairo_translate( m_ctx, 0.5, 0.5 );
1179     }
1180     ~wxCairoOffsetHelper( )
1181     {
1182         if ( m_offset )
1183             cairo_translate( m_ctx, -0.5, -0.5 );
1184     }
1185 public :
1186     cairo_t* m_ctx;
1187     bool m_offset;
1188 } ;
1189
1190 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
1191 : wxGraphicsContext(renderer)
1192 {
1193 #ifdef __WXGTK20__
1194     const wxDCImpl *impl = dc.GetImpl();
1195     Init( (cairo_t*) impl->GetCairoContext() );
1196
1197     wxSize sz = dc.GetSize();
1198     m_width = sz.x;
1199     m_height = sz.y;
1200
1201     wxPoint org = dc.GetDeviceOrigin();
1202     cairo_translate( m_context, org.x, org.y );
1203
1204     double sx,sy;
1205     dc.GetUserScale( &sx, &sy );
1206     cairo_scale( m_context, sx, sy );
1207
1208     org = dc.GetLogicalOrigin();
1209     cairo_translate( m_context, -org.x, -org.y );
1210 #endif
1211 }
1212
1213 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
1214 : wxGraphicsContext(renderer)
1215 {
1216     int width, height;
1217     dc.GetSize( &width, &height );
1218     m_width = width;
1219     m_height = height;
1220
1221     m_enableOffset = true;
1222
1223 #ifdef __WXGTK20__
1224     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1225     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1226
1227 #if 0
1228     wxGraphicsMatrix matrix = CreateMatrix();
1229
1230     wxPoint org = dc.GetDeviceOrigin();
1231     matrix.Translate( org.x, org.y );
1232
1233     org = dc.GetLogicalOrigin();
1234     matrix.Translate( -org.x, -org.y );
1235
1236     double sx,sy;
1237     dc.GetUserScale( &sx, &sy );
1238     matrix.Scale( sx, sy );
1239
1240     ConcatTransform( matrix );
1241 #endif
1242 #endif
1243
1244 #ifdef __WXMAC__
1245     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1246     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1247     Init( cairo_create( surface ) );
1248     cairo_surface_destroy( surface );
1249 #endif
1250 }
1251
1252 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
1253 : wxGraphicsContext(renderer)
1254 {
1255     int width, height;
1256     dc.GetSize( &width, &height );
1257     m_width = width;
1258     m_height = height;
1259
1260     m_enableOffset = true;
1261
1262 #ifdef __WXGTK20__
1263     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1264     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1265
1266 #if 0
1267     wxGraphicsMatrix matrix = CreateMatrix();
1268
1269     wxPoint org = dc.GetDeviceOrigin();
1270     matrix.Translate( org.x, org.y );
1271
1272     org = dc.GetLogicalOrigin();
1273     matrix.Translate( -org.x, -org.y );
1274
1275     double sx,sy;
1276     dc.GetUserScale( &sx, &sy );
1277     matrix.Scale( sx, sy );
1278
1279     ConcatTransform( matrix );
1280 #endif
1281 #endif
1282
1283 #ifdef __WXMAC__
1284     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1285     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1286     Init( cairo_create( surface ) );
1287     cairo_surface_destroy( surface );
1288 #endif
1289 }
1290
1291 #ifdef __WXGTK20__
1292 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
1293 : wxGraphicsContext(renderer)
1294 {
1295     Init( gdk_cairo_create( drawable ) );
1296
1297     int width, height;
1298     gdk_drawable_get_size( drawable, &width, &height );
1299     m_width = width;
1300     m_height = height;
1301 }
1302 #endif
1303
1304 #ifdef __WXMSW__
1305 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
1306 : wxGraphicsContext(renderer)
1307 {
1308     m_mswSurface = cairo_win32_surface_create(handle);
1309     Init( cairo_create(m_mswSurface) );
1310     m_width =
1311     m_height = 0;
1312 }
1313 #endif
1314
1315
1316 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1317 : wxGraphicsContext(renderer)
1318 {
1319     Init( context );
1320     m_width =
1321     m_height = 0;
1322 }
1323
1324 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1325 : wxGraphicsContext(renderer)
1326 {
1327     m_enableOffset = true;
1328 #ifdef __WXGTK__
1329     // something along these lines (copied from dcclient)
1330
1331     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1332     // code should still be able to create wxClientDCs for them, so we will
1333     // use the parent window here then.
1334     if (window->m_wxwindow == NULL)
1335     {
1336         window = window->GetParent();
1337     }
1338
1339     wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
1340
1341     Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
1342
1343     wxSize sz = window->GetSize();
1344     m_width = sz.x;
1345     m_height = sz.y;
1346 #endif
1347
1348 #ifdef __WXMSW__
1349     m_mswSurface = cairo_win32_surface_create((HDC)window->GetHandle());
1350     Init(cairo_create(m_mswSurface));
1351 #endif
1352
1353 }
1354
1355 wxCairoContext::~wxCairoContext()
1356 {
1357     if ( m_context )
1358     {
1359         PopState();
1360         PopState();
1361         cairo_destroy(m_context);
1362     }
1363 #ifdef __WXMSW__
1364     if ( m_mswSurface )
1365         cairo_surface_destroy(m_mswSurface);
1366 #endif
1367 }
1368
1369 void wxCairoContext::Init(cairo_t *context)
1370 {
1371     m_context = context ;
1372     PushState();
1373     PushState();
1374 }
1375
1376
1377 void wxCairoContext::Clip( const wxRegion& region )
1378 {
1379     // Create a path with all the rectangles in the region
1380     wxGraphicsPath path = GetRenderer()->CreatePath();
1381     wxRegionIterator ri(region);
1382     while (ri)
1383     {
1384         path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
1385         ++ri;
1386     }
1387
1388     // Put it in the context
1389     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1390     cairo_append_path(m_context, cp);
1391
1392     // clip to that path
1393     cairo_clip(m_context);
1394     path.UnGetNativePath(cp);
1395 }
1396
1397 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1398 {
1399     // Create a path with this rectangle
1400     wxGraphicsPath path = GetRenderer()->CreatePath();
1401     path.AddRectangle(x,y,w,h);
1402
1403     // Put it in the context
1404     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1405     cairo_append_path(m_context, cp);
1406
1407     // clip to that path
1408     cairo_clip(m_context);
1409     path.UnGetNativePath(cp);
1410 }
1411
1412 void wxCairoContext::ResetClip()
1413 {
1414     cairo_reset_clip(m_context);
1415 }
1416
1417
1418 void wxCairoContext::StrokePath( const wxGraphicsPath& path )
1419 {
1420     if ( !m_pen.IsNull() )
1421     {
1422         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1423         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1424         cairo_append_path(m_context,cp);
1425         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1426         cairo_stroke(m_context);
1427         path.UnGetNativePath(cp);
1428     }
1429 }
1430
1431 void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1432 {
1433     if ( !m_brush.IsNull() )
1434     {
1435         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1436         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1437         cairo_append_path(m_context,cp);
1438         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1439         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1440         cairo_fill(m_context);
1441         path.UnGetNativePath(cp);
1442     }
1443 }
1444
1445 void wxCairoContext::Rotate( wxDouble angle )
1446 {
1447     cairo_rotate(m_context,angle);
1448 }
1449
1450 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1451 {
1452     cairo_translate(m_context,dx,dy);
1453 }
1454
1455 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1456 {
1457     cairo_scale(m_context,xScale,yScale);
1458 }
1459
1460 // concatenates this transform with the current transform of this context
1461 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1462 {
1463     cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
1464 }
1465
1466 // sets the transform of this context
1467 void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
1468 {
1469     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
1470 }
1471
1472 // gets the matrix of this context
1473 wxGraphicsMatrix wxCairoContext::GetTransform() const
1474 {
1475     wxGraphicsMatrix matrix = CreateMatrix();
1476     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
1477     return matrix;
1478 }
1479
1480
1481
1482 void wxCairoContext::PushState()
1483 {
1484     cairo_save(m_context);
1485 }
1486
1487 void wxCairoContext::PopState()
1488 {
1489     cairo_restore(m_context);
1490 }
1491
1492 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1493 {
1494     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1495     DrawBitmap(bitmap, x, y, w, h);
1496
1497 }
1498
1499 void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1500 {
1501     PushState();
1502
1503     // In case we're scaling the image by using a width and height different
1504     // than the bitmap's size create a pattern transformation on the surface and
1505     // draw the transformed pattern.
1506     wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
1507     cairo_pattern_t* pattern = data->GetCairoPattern();
1508     wxSize size = data->GetSize();
1509
1510     wxDouble scaleX = w / size.GetWidth();
1511     wxDouble scaleY = h / size.GetHeight();
1512
1513     // prepare to draw the image
1514     cairo_translate(m_context, x, y);
1515     cairo_scale(m_context, scaleX, scaleY);
1516     cairo_set_source(m_context, pattern);
1517     // use the original size here since the context is scaled already...
1518     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
1519     // fill the rectangle using the pattern
1520     cairo_fill(m_context);
1521
1522     PopState();
1523 }
1524
1525 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1526 {
1527     // An icon is a bitmap on wxGTK, so do this the easy way.  When we want to
1528     // start using the Cairo backend on other platforms then we may need to
1529     // fiddle with this...
1530     DrawBitmap(icon, x, y, w, h);
1531 }
1532
1533
1534 void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
1535 {
1536     wxCHECK_RET( !m_font.IsNull(),
1537                  wxT("wxCairoContext::DrawText - no valid font set") );
1538
1539     if ( str.empty())
1540         return;
1541
1542     const wxCharBuffer data = str.utf8_str();
1543     if ( !data )
1544         return;
1545
1546     ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
1547
1548 #ifdef __WXGTK__
1549     size_t datalen = strlen(data);
1550
1551     PangoLayout *layout = pango_cairo_create_layout (m_context);
1552     wxCairoFontData* font_data = (wxCairoFontData*) m_font.GetRefData();
1553     pango_layout_set_font_description( layout, font_data->GetFont());
1554     pango_layout_set_text(layout, data, datalen);
1555
1556     if (font_data->GetUnderlined())
1557     {
1558         PangoAttrList *attrs = pango_attr_list_new();
1559         PangoAttribute *attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1560         pango_attr_list_insert(attrs, attr);
1561         pango_layout_set_attributes(layout, attrs);
1562         pango_attr_list_unref(attrs);
1563     }
1564
1565     cairo_move_to(m_context, x, y);
1566     pango_cairo_show_layout (m_context, layout);
1567
1568     g_object_unref (layout);
1569 #else
1570     // Cairo's x,y for drawing text is at the baseline, so we need to adjust
1571     // the position we move to by the ascent.
1572     cairo_font_extents_t fe;
1573     cairo_font_extents(m_context, &fe);
1574     cairo_move_to(m_context, x, y+fe.ascent);
1575
1576     cairo_show_text(m_context, data);
1577 #endif
1578 }
1579
1580 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1581                                     wxDouble *descent, wxDouble *externalLeading ) const
1582 {
1583     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
1584
1585     if ( width )
1586         *width = 0;
1587     if ( height )
1588         *height = 0;
1589     if ( descent )
1590         *descent = 0;
1591     if ( externalLeading )
1592         *externalLeading = 0;
1593
1594     if ( str.empty())
1595         return;
1596
1597 #ifdef __WXGTK__
1598     int w, h;
1599
1600     PangoLayout *layout = pango_cairo_create_layout (m_context);
1601     pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
1602     const wxCharBuffer data = str.utf8_str();
1603     if ( !data )
1604     {
1605         return;
1606     }
1607     pango_layout_set_text( layout, data, strlen(data) );
1608     pango_layout_get_pixel_size (layout, &w, &h);
1609     if ( width )
1610         *width = w;
1611     if ( height )
1612         *height = h;
1613     if (descent)
1614     {
1615         PangoLayoutIter *iter = pango_layout_get_iter(layout);
1616         int baseline = pango_layout_iter_get_baseline(iter);
1617         pango_layout_iter_free(iter);
1618         *descent = h - PANGO_PIXELS(baseline);
1619     }
1620     g_object_unref (layout);
1621 #else
1622     ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this);
1623
1624     if (width)
1625     {
1626         const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
1627         cairo_text_extents_t te;
1628         cairo_text_extents(m_context, buf, &te);
1629         *width = te.width;
1630     }
1631
1632     if (height || descent || externalLeading)
1633     {
1634         cairo_font_extents_t fe;
1635         cairo_font_extents(m_context, &fe);
1636
1637         // some backends have negative descents
1638
1639         if ( fe.descent < 0 )
1640             fe.descent = -fe.descent;
1641
1642         if ( fe.height < (fe.ascent + fe.descent ) )
1643         {
1644             // some backends are broken re height ... (eg currently ATSUI)
1645             fe.height = fe.ascent + fe.descent;
1646         }
1647
1648         if (height)
1649             *height = fe.height;
1650         if ( descent )
1651             *descent = fe.descent;
1652         if ( externalLeading )
1653             *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
1654     }
1655 #endif
1656 }
1657
1658 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1659 {
1660     widths.Empty();
1661     widths.Add(0, text.length());
1662
1663     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
1664
1665     if (text.empty())
1666         return;
1667
1668     // TODO
1669 }
1670
1671 void * wxCairoContext::GetNativeContext()
1672 {
1673     return m_context;
1674 }
1675
1676 bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
1677 {
1678     if (m_antialias == antialias)
1679         return true;
1680
1681     m_antialias = antialias;
1682
1683     cairo_antialias_t antialiasMode;
1684     switch (antialias)
1685     {
1686         case wxANTIALIAS_DEFAULT:
1687             antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
1688             break;
1689         case wxANTIALIAS_NONE:
1690             antialiasMode = CAIRO_ANTIALIAS_NONE;
1691             break;
1692         default:
1693             return false;
1694     }
1695     cairo_set_antialias(m_context, antialiasMode);
1696     return true;
1697 }
1698
1699 bool wxCairoContext::SetInterpolationQuality(wxInterpolationQuality WXUNUSED(interpolation))
1700 {
1701     // placeholder
1702     return false;
1703 }
1704
1705 bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
1706 {
1707     if ( m_composition == op )
1708         return true;
1709
1710     m_composition = op;
1711     cairo_operator_t cop;
1712     switch (op)
1713     {
1714         case wxCOMPOSITION_CLEAR:
1715             cop = CAIRO_OPERATOR_CLEAR;
1716             break;
1717         case wxCOMPOSITION_SOURCE:
1718             cop = CAIRO_OPERATOR_SOURCE;
1719             break;
1720         case wxCOMPOSITION_OVER:
1721             cop = CAIRO_OPERATOR_OVER;
1722             break;
1723         case wxCOMPOSITION_IN:
1724             cop = CAIRO_OPERATOR_IN;
1725             break;
1726         case wxCOMPOSITION_OUT:
1727             cop = CAIRO_OPERATOR_OUT;
1728             break;
1729         case wxCOMPOSITION_ATOP:
1730             cop = CAIRO_OPERATOR_ATOP;
1731             break;
1732         case wxCOMPOSITION_DEST:
1733             cop = CAIRO_OPERATOR_DEST;
1734             break;
1735         case wxCOMPOSITION_DEST_OVER:
1736             cop = CAIRO_OPERATOR_DEST_OVER;
1737             break;
1738         case wxCOMPOSITION_DEST_IN:
1739             cop = CAIRO_OPERATOR_DEST_IN;
1740             break;
1741         case wxCOMPOSITION_DEST_OUT:
1742             cop = CAIRO_OPERATOR_DEST_OUT;
1743             break;
1744         case wxCOMPOSITION_DEST_ATOP:
1745             cop = CAIRO_OPERATOR_DEST_ATOP;
1746             break;
1747         case wxCOMPOSITION_XOR:
1748             cop = CAIRO_OPERATOR_XOR;
1749             break;
1750         case wxCOMPOSITION_ADD:
1751             cop = CAIRO_OPERATOR_ADD;
1752             break;
1753         default:
1754             return false;
1755     }
1756     cairo_set_operator(m_context, cop);
1757     return true;
1758 }
1759
1760 void wxCairoContext::BeginLayer(wxDouble opacity)
1761 {
1762     m_layerOpacities.push_back(opacity);
1763     cairo_push_group(m_context);
1764 }
1765
1766 void wxCairoContext::EndLayer()
1767 {
1768     float opacity = m_layerOpacities.back();
1769     m_layerOpacities.pop_back();
1770     cairo_pop_group_to_source(m_context);
1771     cairo_paint_with_alpha(m_context,opacity);
1772 }
1773
1774 //-----------------------------------------------------------------------------
1775 // wxCairoRenderer declaration
1776 //-----------------------------------------------------------------------------
1777
1778 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
1779 {
1780 public :
1781     wxCairoRenderer() {}
1782
1783     virtual ~wxCairoRenderer() {}
1784
1785     // Context
1786
1787     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1788     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
1789     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
1790
1791     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1792
1793     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1794
1795     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1796
1797     virtual wxGraphicsContext * CreateMeasuringContext();
1798 #ifdef __WXMSW__
1799 #if wxUSE_ENH_METAFILE
1800     virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
1801 #endif
1802 #endif
1803     // Path
1804
1805     virtual wxGraphicsPath CreatePath();
1806
1807     // Matrix
1808
1809     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1810         wxDouble tx=0.0, wxDouble ty=0.0);
1811
1812
1813     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1814
1815     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1816
1817     virtual wxGraphicsBrush
1818     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
1819                               wxDouble x2, wxDouble y2,
1820                               const wxGraphicsGradientStops& stops);
1821
1822     virtual wxGraphicsBrush
1823     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
1824                               wxDouble xc, wxDouble yc,
1825                               wxDouble radius,
1826                               const wxGraphicsGradientStops& stops);
1827
1828     // sets the font
1829     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1830
1831     // create a native bitmap representation
1832     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
1833
1834     // create a graphics bitmap from a native bitmap
1835     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
1836
1837     // create a subimage from a native image representation
1838     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
1839
1840 private :
1841     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
1842 } ;
1843
1844 //-----------------------------------------------------------------------------
1845 // wxCairoRenderer implementation
1846 //-----------------------------------------------------------------------------
1847
1848 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
1849
1850 static wxCairoRenderer gs_cairoGraphicsRenderer;
1851 // temporary hack to allow creating a cairo context on any platform
1852 extern wxGraphicsRenderer* gCairoRenderer;
1853 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
1854
1855 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
1856 {
1857     return new wxCairoContext(this,dc);
1858 }
1859
1860 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
1861 {
1862     return new wxCairoContext(this,dc);
1863 }
1864
1865 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
1866 {
1867 #ifdef __WXGTK20__
1868     const wxDCImpl *impl = dc.GetImpl();
1869     cairo_t* context = (cairo_t*) impl->GetCairoContext();
1870     if (context)
1871        return new wxCairoContext(this,dc);
1872     else
1873 #endif
1874        return NULL;
1875 }
1876
1877 #ifdef __WXMSW__
1878 #if wxUSE_ENH_METAFILE
1879 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxEnhMetaFileDC& dc)
1880 {
1881     return NULL;
1882 }
1883 #endif
1884 #endif
1885
1886 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
1887 {
1888 #ifdef __WXMSW__
1889     return new wxCairoContext(this,(HDC)context);
1890 #else
1891     return new wxCairoContext(this,(cairo_t*)context);
1892 #endif
1893 }
1894
1895
1896 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
1897 {
1898 #ifdef __WXGTK__
1899     return new wxCairoContext(this,(GdkDrawable*)window);
1900 #else
1901     return NULL;
1902 #endif
1903 }
1904
1905 wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
1906 {
1907 #ifdef __WXGTK__
1908     return CreateContextFromNativeWindow(gdk_get_default_root_window());
1909 #endif
1910     return NULL;
1911     // TODO
1912 }
1913
1914 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
1915 {
1916     return new wxCairoContext(this, window );
1917 }
1918
1919 // Path
1920
1921 wxGraphicsPath wxCairoRenderer::CreatePath()
1922 {
1923     wxGraphicsPath path;
1924     path.SetRefData( new wxCairoPathData(this) );
1925     return path;
1926 }
1927
1928
1929 // Matrix
1930
1931 wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1932                                                 wxDouble tx, wxDouble ty)
1933
1934 {
1935     wxGraphicsMatrix m;
1936     wxCairoMatrixData* data = new wxCairoMatrixData( this );
1937     data->Set( a,b,c,d,tx,ty ) ;
1938     m.SetRefData(data);
1939     return m;
1940 }
1941
1942 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
1943 {
1944     if ( !pen.IsOk() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT )
1945         return wxNullGraphicsPen;
1946     else
1947     {
1948         wxGraphicsPen p;
1949         p.SetRefData(new wxCairoPenData( this, pen ));
1950         return p;
1951     }
1952 }
1953
1954 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
1955 {
1956     if ( !brush.IsOk() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT )
1957         return wxNullGraphicsBrush;
1958     else
1959     {
1960         wxGraphicsBrush p;
1961         p.SetRefData(new wxCairoBrushData( this, brush ));
1962         return p;
1963     }
1964 }
1965
1966 wxGraphicsBrush
1967 wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
1968                                            wxDouble x2, wxDouble y2,
1969                                            const wxGraphicsGradientStops& stops)
1970 {
1971     wxGraphicsBrush p;
1972     wxCairoBrushData* d = new wxCairoBrushData( this );
1973     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
1974     p.SetRefData(d);
1975     return p;
1976 }
1977
1978 wxGraphicsBrush
1979 wxCairoRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
1980                                            wxDouble xc, wxDouble yc, wxDouble r,
1981                                            const wxGraphicsGradientStops& stops)
1982 {
1983     wxGraphicsBrush p;
1984     wxCairoBrushData* d = new wxCairoBrushData( this );
1985     d->CreateRadialGradientBrush(xo, yo, xc, yc, r, stops);
1986     p.SetRefData(d);
1987     return p;
1988 }
1989
1990 // sets the font
1991 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
1992 {
1993     if ( font.IsOk() )
1994     {
1995         wxGraphicsFont p;
1996         p.SetRefData(new wxCairoFontData( this , font, col ));
1997         return p;
1998     }
1999     else
2000         return wxNullGraphicsFont;
2001 }
2002
2003 wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
2004 {
2005     if ( bmp.IsOk() )
2006     {
2007         wxGraphicsBitmap p;
2008         p.SetRefData(new wxCairoBitmapData( this , bmp ));
2009         return p;
2010     }
2011     else
2012         return wxNullGraphicsBitmap;
2013 }
2014
2015 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
2016 {
2017     if ( bitmap != NULL )
2018     {
2019         wxGraphicsBitmap p;
2020         p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
2021         return p;
2022     }
2023     else
2024         return wxNullGraphicsBitmap;
2025 }
2026
2027 wxGraphicsBitmap
2028 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
2029                                  wxDouble WXUNUSED(x),
2030                                  wxDouble WXUNUSED(y),
2031                                  wxDouble WXUNUSED(w),
2032                                  wxDouble WXUNUSED(h))
2033 {
2034     wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
2035     return wxNullGraphicsBitmap;
2036 }
2037
2038 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2039 {
2040     return &gs_cairoGraphicsRenderer;
2041 }
2042
2043 #else // !wxUSE_CAIRO
2044
2045 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2046 {
2047     return NULL;
2048 }
2049
2050 #endif  // wxUSE_CAIRO/!wxUSE_CAIRO
2051
2052 // MSW and OS X have their own native default renderers, but the other ports
2053 // use Cairo by default
2054 #if !(defined(__WXMSW__) || defined(__WXOSX__))
2055 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2056 {
2057     return GetCairoRenderer();
2058 }
2059 #endif // !(__WXMSW__ || __WXOSX__)
2060
2061 #endif // wxUSE_GRAPHICS_CONTEXT