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 // keep cairo.h from defining dllimport as we're defining the symbols inside
  25 // the wx dll in order to load them dynamically.
  26 #define cairo_public
  27
  28 #include "wx/cairo.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/bitmap.h"
  32     #include "wx/icon.h"
  33     #include "wx/dcclient.h"
  34     #include "wx/dcmemory.h"
  35     #include "wx/dcprint.h"
  36     #include "wx/window.h"
  37 #endif
  38
  39 #include "wx/private/graphics.h"
  40 #include "wx/rawbmp.h"
  41 #include "wx/vector.h"
  42
  43 using namespace std;
  44
  45 //-----------------------------------------------------------------------------
  46 // device context implementation
  47 //
  48 // more and more of the dc functionality should be implemented by calling
  49 // the appropricate wxCairoContext, but we will have to do that step by step
  50 // also coordinate conversions should be moved to native matrix ops
  51 //-----------------------------------------------------------------------------
  52
  53 // we always stock two context states, one at entry, to be able to preserve the
  54 // state we were called with, the other one after changing to HI Graphics orientation
  55 // (this one is used for getting back clippings etc)
  56
  57 //-----------------------------------------------------------------------------
  58 // wxGraphicsPath implementation
  59 //-----------------------------------------------------------------------------
  60
  61 // TODO remove this dependency (gdiplus needs the macros)
  62
  63 #ifndef max
  64 #define max(a,b)            (((a) > (b)) ? (a) : (b))
  65 #endif
  66
  67 #ifndef min
  68 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  69 #endif
  70
  71 #include <cairo.h>
  72 #ifdef __WXMSW__
  73 #include <cairo-win32.h>
  74 // Notice that the order is important: cairo-win32.h includes windows.h which
  75 // pollutes the global name space with macros so include our own header which
  76 // #undefines them after it.
  77 #include "wx/msw/private.h"
  78 #endif
  79
  80 #ifdef __WXGTK__
  81 #include <gtk/gtk.h>
  82 #include "wx/fontutil.h"
  83 #ifndef __WXGTK3__
  84 #include "wx/gtk/dc.h"
  85 #endif
  86 #endif
  87
  88 #ifdef __WXMAC__
  89 #include "wx/osx/private.h"
  90 #include <cairo-quartz.h>
  91 #include <cairo-atsui.h>
  92 #endif
  93
  94 class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
  95 {
  96 public :
  97     wxCairoPathData(wxGraphicsRenderer* renderer, cairo_t* path = NULL);
  98     ~wxCairoPathData();
  99
 100     virtual wxGraphicsObjectRefData *Clone() const;
 101
 102     //
 103     // These are the path primitives from which everything else can be constructed
 104     //
 105
 106     // begins a new subpath at (x,y)
 107     virtual void MoveToPoint( wxDouble x, wxDouble y );
 108
 109     // adds a straight line from the current point to (x,y)
 110     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 111
 112     // adds a cubic Bezier curve from the current point, using two control points and an end point
 113     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 114
 115
 116     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 117     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 118
 119     // gets the last point of the current path, (0,0) if not yet set
 120     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 121
 122     // adds another path
 123     virtual void AddPath( const wxGraphicsPathData* path );
 124
 125     // closes the current sub-path
 126     virtual void CloseSubpath();
 127
 128     //
 129     // These are convenience functions which - if not available natively will be assembled
 130     // using the primitives from above
 131     //
 132
 133     /*
 134
 135     // appends a rectangle as a new closed subpath
 136     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 137     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 138     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 139
 140     // 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)
 141     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 142     */
 143
 144     // returns the native path
 145     virtual void * GetNativePath() const ;
 146
 147     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 148     virtual void UnGetNativePath(void *p) const;
 149
 150     // transforms each point of this path by the matrix
 151     virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
 152
 153     // gets the bounding box enclosing all points (possibly including control points)
 154     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
 155
 156     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxWINDING_RULE) const;
 157
 158 private :
 159     cairo_t* m_pathContext;
 160 };
 161
 162 class WXDLLIMPEXP_CORE wxCairoMatrixData : public wxGraphicsMatrixData
 163 {
 164 public :
 165     wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
 166     virtual ~wxCairoMatrixData() ;
 167
 168     virtual wxGraphicsObjectRefData *Clone() const ;
 169
 170     // concatenates the matrix
 171     virtual void Concat( const wxGraphicsMatrixData *t );
 172
 173     // sets the matrix to the respective values
 174     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 175         wxDouble tx=0.0, wxDouble ty=0.0);
 176
 177     // gets the component valuess of the matrix
 178     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 179                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 180
 181     // makes this the inverse matrix
 182     virtual void Invert();
 183
 184     // returns true if the elements of the transformation matrix are equal ?
 185     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 186
 187     // return true if this is the identity matrix
 188     virtual bool IsIdentity() const;
 189
 190     //
 191     // transformation
 192     //
 193
 194     // add the translation to this matrix
 195     virtual void Translate( wxDouble dx , wxDouble dy );
 196
 197     // add the scale to this matrix
 198     virtual void Scale( wxDouble xScale , wxDouble yScale );
 199
 200     // add the rotation to this matrix (radians)
 201     virtual void Rotate( wxDouble angle );
 202
 203     //
 204     // apply the transforms
 205     //
 206
 207     // applies that matrix to the point
 208     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 209
 210     // applies the matrix except for translations
 211     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 212
 213     // returns the native representation
 214     virtual void * GetNativeMatrix() const;
 215 private:
 216     cairo_matrix_t m_matrix ;
 217 } ;
 218
 219 class WXDLLIMPEXP_CORE wxCairoPenData : public wxGraphicsObjectRefData
 220 {
 221 public:
 222     wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 223     ~wxCairoPenData();
 224
 225     void Init();
 226
 227     virtual void Apply( wxGraphicsContext* context );
 228     virtual wxDouble GetWidth() { return m_width; }
 229
 230 private :
 231     double m_width;
 232
 233     double m_red;
 234     double m_green;
 235     double m_blue;
 236     double m_alpha;
 237
 238     cairo_line_cap_t m_cap;
 239     cairo_line_join_t m_join;
 240
 241     int m_count;
 242     const double *m_lengths;
 243     double *m_userLengths;
 244
 245     wxPen m_pen;
 246
 247     wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
 248 };
 249
 250 class WXDLLIMPEXP_CORE wxCairoBrushData : public wxGraphicsObjectRefData
 251 {
 252 public:
 253     wxCairoBrushData( wxGraphicsRenderer* renderer );
 254     wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 255     ~wxCairoBrushData ();
 256
 257     virtual void Apply( wxGraphicsContext* context );
 258
 259     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 260                                    wxDouble x2, wxDouble y2,
 261                                    const wxGraphicsGradientStops& stops);
 262     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 263                                    wxDouble xc, wxDouble yc, wxDouble radius,
 264                                    const wxGraphicsGradientStops& stops);
 265
 266 protected:
 267     virtual void Init();
 268
 269     // common part of Create{Linear,Radial}GradientBrush()
 270     void AddGradientStops(const wxGraphicsGradientStops& stops);
 271
 272 private :
 273     double m_red;
 274     double m_green;
 275     double m_blue;
 276     double m_alpha;
 277
 278     cairo_pattern_t* m_brushPattern;
 279 };
 280
 281 class wxCairoFontData : public wxGraphicsObjectRefData
 282 {
 283 public:
 284     wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 285     wxCairoFontData(wxGraphicsRenderer* renderer,
 286                     double sizeInPixels,
 287                     const wxString& facename,
 288                     int flags,
 289                     const wxColour& col);
 290     ~wxCairoFontData();
 291
 292     virtual bool Apply( wxGraphicsContext* context );
 293 #ifdef __WXGTK__
 294     const wxFont& GetFont() const { return m_wxfont; }
 295 #endif
 296 private :
 297     void InitColour(const wxColour& col);
 298     void InitFontComponents(const wxString& facename,
 299                             cairo_font_slant_t slant,
 300                             cairo_font_weight_t weight);
 301
 302     double m_size;
 303     double m_red;
 304     double m_green;
 305     double m_blue;
 306     double m_alpha;
 307 #ifdef __WXMAC__
 308     cairo_font_face_t *m_font;
 309 #elif defined(__WXGTK__)
 310     wxFont m_wxfont;
 311 #endif
 312
 313     // These members are used when the font is created from its face name and
 314     // flags (and not from wxFont) and also even when creating it from wxFont
 315     // on the platforms not covered above.
 316     //
 317     // Notice that we can't use cairo_font_face_t instead of storing those,
 318     // even though it would be simpler and need less #ifdefs, because
 319     // cairo_toy_font_face_create() that we'd need to create it is only
 320     // available in Cairo 1.8 and we require just 1.2 currently. If we do drop
 321     // support for < 1.8 versions in the future it would be definitely better
 322     // to use cairo_toy_font_face_create() instead.
 323     wxCharBuffer m_fontName;
 324     cairo_font_slant_t m_slant;
 325     cairo_font_weight_t m_weight;
 326 };
 327
 328 class wxCairoBitmapData : public wxGraphicsBitmapData
 329 {
 330 public:
 331     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
 332 #if wxUSE_IMAGE
 333     wxCairoBitmapData(wxGraphicsRenderer* renderer, const wxImage& image);
 334 #endif // wxUSE_IMAGE
 335     wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
 336     ~wxCairoBitmapData();
 337
 338     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
 339     virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
 340     virtual void* GetNativeBitmap() const { return m_surface; }
 341     virtual wxSize GetSize() { return wxSize(m_width, m_height); }
 342
 343 #if wxUSE_IMAGE
 344     wxImage ConvertToImage() const;
 345 #endif // wxUSE_IMAGE
 346
 347 private :
 348     // Allocate m_buffer for the bitmap of the given size in the given format.
 349     //
 350     // Returns the stride used for the buffer.
 351     int InitBuffer(int width, int height, cairo_format_t format);
 352
 353     // Really create the surface using the buffer (which was supposed to be
 354     // filled since InitBuffer() call).
 355     void InitSurface(cairo_format_t format, int stride);
 356
 357
 358     cairo_surface_t* m_surface;
 359     cairo_pattern_t* m_pattern;
 360     int m_width;
 361     int m_height;
 362     unsigned char* m_buffer;
 363 };
 364
 365 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 366 {
 367 public:
 368     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 369     wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
 370     wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
 371 #ifdef __WXGTK__
 372     wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window );
 373 #endif
 374 #ifdef __WXMSW__
 375     wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
 376 #endif
 377     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 378     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 379
 380     // If this ctor is used, Init() must be called by the derived class later.
 381     wxCairoContext( wxGraphicsRenderer* renderer );
 382
 383     virtual ~wxCairoContext();
 384
 385     virtual bool ShouldOffset() const
 386     {
 387         if ( !m_enableOffset )
 388             return false;
 389
 390         int penwidth = 0 ;
 391         if ( !m_pen.IsNull() )
 392         {
 393             penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
 394             if ( penwidth == 0 )
 395                 penwidth = 1;
 396         }
 397         return ( penwidth % 2 ) == 1;
 398     }
 399
 400     virtual void Clip( const wxRegion &region );
 401 #ifdef __WXMSW__
 402     cairo_surface_t* m_mswSurface;
 403     WindowHDC m_mswWindowHDC;
 404 #endif
 405
 406     // clips drawings to the rect
 407     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 408
 409     // resets the clipping to original extent
 410     virtual void ResetClip();
 411
 412     virtual void * GetNativeContext();
 413
 414     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 415
 416     virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
 417
 418     virtual bool SetCompositionMode(wxCompositionMode op);
 419
 420     virtual void BeginLayer(wxDouble opacity);
 421
 422     virtual void EndLayer();
 423
 424     virtual void StrokePath( const wxGraphicsPath& p );
 425     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
 426
 427     virtual void Translate( wxDouble dx , wxDouble dy );
 428     virtual void Scale( wxDouble xScale , wxDouble yScale );
 429     virtual void Rotate( wxDouble angle );
 430
 431     // concatenates this transform with the current transform of this context
 432     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 433
 434     // sets the transform of this context
 435     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 436
 437     // gets the matrix of this context
 438     virtual wxGraphicsMatrix GetTransform() const;
 439
 440     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 441     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 442     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 443     virtual void PushState();
 444     virtual void PopState();
 445
 446     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 447                                 wxDouble *descent, wxDouble *externalLeading ) const;
 448     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 449
 450 protected:
 451     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
 452
 453     void Init(cairo_t *context);
 454
 455 private:
 456     cairo_t* m_context;
 457
 458     wxVector<float> m_layerOpacities;
 459
 460     wxDECLARE_NO_COPY_CLASS(wxCairoContext);
 461 };
 462
 463 #if wxUSE_IMAGE
 464 // ----------------------------------------------------------------------------
 465 // wxCairoImageContext: context associated with a wxImage.
 466 // ----------------------------------------------------------------------------
 467
 468 class wxCairoImageContext : public wxCairoContext
 469 {
 470 public:
 471     wxCairoImageContext(wxGraphicsRenderer* renderer, wxImage& image) :
 472         wxCairoContext(renderer),
 473         m_image(image),
 474         m_data(renderer, image)
 475     {
 476         Init(cairo_create(m_data.GetCairoSurface()));
 477     }
 478
 479     virtual ~wxCairoImageContext()
 480     {
 481         m_image = m_data.ConvertToImage();
 482     }
 483
 484 private:
 485     wxImage& m_image;
 486     wxCairoBitmapData m_data;
 487
 488     wxDECLARE_NO_COPY_CLASS(wxCairoImageContext);
 489 };
 490 #endif // wxUSE_IMAGE
 491
 492 //-----------------------------------------------------------------------------
 493 // wxCairoPenData implementation
 494 //-----------------------------------------------------------------------------
 495
 496 wxCairoPenData::~wxCairoPenData()
 497 {
 498     delete[] m_userLengths;
 499 }
 500
 501 void wxCairoPenData::Init()
 502 {
 503     m_lengths = NULL;
 504     m_userLengths = NULL;
 505     m_width = 0;
 506     m_count = 0;
 507 }
 508
 509 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 510 : wxGraphicsObjectRefData(renderer)
 511 {
 512     Init();
 513     m_pen = pen;
 514     m_width = m_pen.GetWidth();
 515     if (m_width <= 0.0)
 516         m_width = 0.1;
 517
 518     m_red = m_pen.GetColour().Red()/255.0;
 519     m_green = m_pen.GetColour().Green()/255.0;
 520     m_blue = m_pen.GetColour().Blue()/255.0;
 521     m_alpha = m_pen.GetColour().Alpha()/255.0;
 522
 523     switch ( m_pen.GetCap() )
 524     {
 525     case wxCAP_ROUND :
 526         m_cap = CAIRO_LINE_CAP_ROUND;
 527         break;
 528
 529     case wxCAP_PROJECTING :
 530         m_cap = CAIRO_LINE_CAP_SQUARE;
 531         break;
 532
 533     case wxCAP_BUTT :
 534         m_cap = CAIRO_LINE_CAP_BUTT;
 535         break;
 536
 537     default :
 538         m_cap = CAIRO_LINE_CAP_BUTT;
 539         break;
 540     }
 541
 542     switch ( m_pen.GetJoin() )
 543     {
 544     case wxJOIN_BEVEL :
 545         m_join = CAIRO_LINE_JOIN_BEVEL;
 546         break;
 547
 548     case wxJOIN_MITER :
 549         m_join = CAIRO_LINE_JOIN_MITER;
 550         break;
 551
 552     case wxJOIN_ROUND :
 553         m_join = CAIRO_LINE_JOIN_ROUND;
 554         break;
 555
 556     default :
 557         m_join = CAIRO_LINE_JOIN_MITER;
 558         break;
 559     }
 560
 561     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 562     const double dotted[] =
 563     {
 564         dashUnit , dashUnit + 2.0
 565     };
 566     static const double short_dashed[] =
 567     {
 568         9.0 , 6.0
 569     };
 570     static const double dashed[] =
 571     {
 572         19.0 , 9.0
 573     };
 574     static const double dotted_dashed[] =
 575     {
 576         9.0 , 6.0 , 3.0 , 3.0
 577     };
 578
 579     switch ( m_pen.GetStyle() )
 580     {
 581     case wxPENSTYLE_SOLID :
 582         break;
 583
 584     case wxPENSTYLE_DOT :
 585         m_count = WXSIZEOF(dotted);
 586         m_userLengths = new double[ m_count ] ;
 587         memcpy( m_userLengths, dotted, sizeof(dotted) );
 588         m_lengths = m_userLengths;
 589         break;
 590
 591     case wxPENSTYLE_LONG_DASH :
 592         m_lengths = dashed ;
 593         m_count = WXSIZEOF(dashed);
 594         break;
 595
 596     case wxPENSTYLE_SHORT_DASH :
 597         m_lengths = short_dashed ;
 598         m_count = WXSIZEOF(short_dashed);
 599         break;
 600
 601     case wxPENSTYLE_DOT_DASH :
 602         m_lengths = dotted_dashed ;
 603         m_count = WXSIZEOF(dotted_dashed);
 604         break;
 605
 606     case wxPENSTYLE_USER_DASH :
 607         {
 608             wxDash *wxdashes ;
 609             m_count = m_pen.GetDashes( &wxdashes ) ;
 610             if ((wxdashes != NULL) && (m_count > 0))
 611             {
 612                 m_userLengths = new double[m_count] ;
 613                 for ( int i = 0 ; i < m_count ; ++i )
 614                 {
 615                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 616
 617                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 618                         m_userLengths[i] = dashUnit + 2.0 ;
 619                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 620                         m_userLengths[i] = dashUnit ;
 621                 }
 622             }
 623             m_lengths = m_userLengths ;
 624         }
 625         break;
 626     case wxPENSTYLE_STIPPLE :
 627         {
 628             /*
 629             wxBitmap* bmp = pen.GetStipple();
 630             if ( bmp && bmp->IsOk() )
 631             {
 632             wxDELETE( m_penImage );
 633             wxDELETE( m_penBrush );
 634             m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 635             m_penBrush = new TextureBrush(m_penImage);
 636             m_pen->SetBrush( m_penBrush );
 637             }
 638             */
 639         }
 640         break;
 641     default :
 642         if ( m_pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
 643             && m_pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
 644         {
 645             /*
 646             wxDELETE( m_penBrush );
 647             HatchStyle style = HatchStyleHorizontal;
 648             switch( pen.GetStyle() )
 649             {
 650             case wxPENSTYLE_BDIAGONAL_HATCH :
 651             style = HatchStyleBackwardDiagonal;
 652             break ;
 653             case wxPENSTYLE_CROSSDIAG_HATCH :
 654             style = HatchStyleDiagonalCross;
 655             break ;
 656             case wxPENSTYLE_FDIAGONAL_HATCH :
 657             style = HatchStyleForwardDiagonal;
 658             break ;
 659             case wxPENSTYLE_CROSS_HATCH :
 660             style = HatchStyleCross;
 661             break ;
 662             case wxPENSTYLE_HORIZONTAL_HATCH :
 663             style = HatchStyleHorizontal;
 664             break ;
 665             case wxPENSTYLE_VERTICAL_HATCH :
 666             style = HatchStyleVertical;
 667             break ;
 668
 669             }
 670             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 671             pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
 672             m_pen->SetBrush( m_penBrush )
 673             */
 674         }
 675         break;
 676     }
 677 }
 678
 679 void wxCairoPenData::Apply( wxGraphicsContext* context )
 680 {
 681     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 682     cairo_set_line_width(ctext,m_width);
 683     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 684     cairo_set_line_cap(ctext,m_cap);
 685     cairo_set_line_join(ctext,m_join);
 686     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 687 }
 688
 689 //-----------------------------------------------------------------------------
 690 // wxCairoBrushData implementation
 691 //-----------------------------------------------------------------------------
 692
 693 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 694   : wxGraphicsObjectRefData( renderer )
 695 {
 696     Init();
 697 }
 698
 699 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush )
 700   : wxGraphicsObjectRefData(renderer)
 701 {
 702     Init();
 703
 704     m_red = brush.GetColour().Red()/255.0;
 705     m_green = brush.GetColour().Green()/255.0;
 706     m_blue = brush.GetColour().Blue()/255.0;
 707     m_alpha = brush.GetColour().Alpha()/255.0;
 708     /*
 709     if ( brush.GetStyle() == wxBRUSHSTYLE_SOLID)
 710     {
 711     m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 712     brush.GetColour().Green() , brush.GetColour().Blue() ) );
 713     }
 714     else if ( brush.IsHatch() )
 715     {
 716     HatchStyle style = HatchStyleHorizontal;
 717     switch( brush.GetStyle() )
 718     {
 719     case wxBRUSHSTYLE_BDIAGONAL_HATCH :
 720     style = HatchStyleBackwardDiagonal;
 721     break ;
 722     case wxBRUSHSTYLE_CROSSDIAG_HATCH :
 723     style = HatchStyleDiagonalCross;
 724     break ;
 725     case wxBRUSHSTYLE_FDIAGONAL_HATCH :
 726     style = HatchStyleForwardDiagonal;
 727     break ;
 728     case wxBRUSHSTYLE_CROSS_HATCH :
 729     style = HatchStyleCross;
 730     break ;
 731     case wxBRUSHSTYLE_HORIZONTAL_HATCH :
 732     style = HatchStyleHorizontal;
 733     break ;
 734     case wxBRUSHSTYLE_VERTICAL_HATCH :
 735     style = HatchStyleVertical;
 736     break ;
 737
 738     }
 739     m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 740     brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
 741     }
 742     else
 743     {
 744     wxBitmap* bmp = brush.GetStipple();
 745     if ( bmp && bmp->IsOk() )
 746     {
 747     wxDELETE( m_brushImage );
 748     m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 749     m_brush = new TextureBrush(m_brushImage);
 750     }
 751     }
 752     */
 753 }
 754
 755 wxCairoBrushData::~wxCairoBrushData ()
 756 {
 757     if (m_brushPattern)
 758         cairo_pattern_destroy(m_brushPattern);
 759 }
 760
 761 void wxCairoBrushData::Apply( wxGraphicsContext* context )
 762 {
 763     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 764     if ( m_brushPattern )
 765     {
 766         cairo_set_source(ctext,m_brushPattern);
 767     }
 768     else
 769     {
 770         cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 771     }
 772 }
 773
 774 void wxCairoBrushData::AddGradientStops(const wxGraphicsGradientStops& stops)
 775 {
 776     // loop over all the stops, they include the beginning and ending ones
 777     const unsigned numStops = stops.GetCount();
 778     for ( unsigned n = 0; n < numStops; n++ )
 779     {
 780         const wxGraphicsGradientStop stop = stops.Item(n);
 781
 782         const wxColour col = stop.GetColour();
 783
 784         cairo_pattern_add_color_stop_rgba
 785         (
 786             m_brushPattern,
 787             stop.GetPosition(),
 788             col.Red()/255.0,
 789             col.Green()/255.0,
 790             col.Blue()/255.0,
 791             col.Alpha()/255.0
 792         );
 793     }
 794
 795     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS,
 796                  wxT("Couldn't create cairo pattern"));
 797 }
 798
 799 void
 800 wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 801                                             wxDouble x2, wxDouble y2,
 802                                             const wxGraphicsGradientStops& stops)
 803 {
 804     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 805
 806     AddGradientStops(stops);
 807 }
 808
 809 void
 810 wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 811                                             wxDouble xc, wxDouble yc,
 812                                             wxDouble radius,
 813                                             const wxGraphicsGradientStops& stops)
 814 {
 815     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 816
 817     AddGradientStops(stops);
 818 }
 819
 820 void wxCairoBrushData::Init()
 821 {
 822     m_brushPattern = NULL;
 823 }
 824
 825 //-----------------------------------------------------------------------------
 826 // wxCairoFontData implementation
 827 //-----------------------------------------------------------------------------
 828
 829 void wxCairoFontData::InitColour(const wxColour& col)
 830 {
 831     m_red = col.Red()/255.0;
 832     m_green = col.Green()/255.0;
 833     m_blue = col.Blue()/255.0;
 834     m_alpha = col.Alpha()/255.0;
 835 }
 836
 837 void
 838 wxCairoFontData::InitFontComponents(const wxString& facename,
 839                                     cairo_font_slant_t slant,
 840                                     cairo_font_weight_t weight)
 841 {
 842     m_fontName = facename.mb_str(wxConvUTF8);
 843     m_slant = slant;
 844     m_weight = weight;
 845 }
 846
 847 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 848                          const wxColour& col )
 849     : wxGraphicsObjectRefData(renderer)
 850 #ifdef __WXGTK__
 851     , m_wxfont(font)
 852 #endif
 853 {
 854     InitColour(col);
 855
 856     m_size = font.GetPointSize();
 857
 858 #ifdef __WXMAC__
 859     m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
 860 #elif defined(__WXGTK__)
 861 #else
 862     InitFontComponents
 863     (
 864         font.GetFaceName(),
 865         font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC
 866                                               : CAIRO_FONT_SLANT_NORMAL,
 867         font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD
 868                                               : CAIRO_FONT_WEIGHT_NORMAL
 869     );
 870 #endif
 871 }
 872
 873 wxCairoFontData::wxCairoFontData(wxGraphicsRenderer* renderer,
 874                                  double sizeInPixels,
 875                                  const wxString& facename,
 876                                  int flags,
 877                                  const wxColour& col) :
 878     wxGraphicsObjectRefData(renderer)
 879 {
 880     InitColour(col);
 881
 882     // Resolution for Cairo image surfaces is 72 DPI meaning that the sizes in
 883     // points and pixels are identical, so we can just pass the size in pixels
 884     // directly to cairo_set_font_size().
 885     m_size = sizeInPixels;
 886
 887 #if defined(__WXMAC__)
 888     m_font = NULL;
 889 #endif
 890
 891     // There is no need to set m_underlined under wxGTK in this case, it can
 892     // only be used if m_font != NULL.
 893
 894     InitFontComponents
 895     (
 896         facename,
 897         flags & wxFONTFLAG_ITALIC ? CAIRO_FONT_SLANT_ITALIC
 898                                   : CAIRO_FONT_SLANT_NORMAL,
 899         flags & wxFONTFLAG_BOLD ? CAIRO_FONT_WEIGHT_BOLD
 900                                 : CAIRO_FONT_WEIGHT_NORMAL
 901     );
 902 }
 903
 904 wxCairoFontData::~wxCairoFontData()
 905 {
 906 #ifdef __WXMAC__
 907     if ( m_font )
 908         cairo_font_face_destroy( m_font );
 909 #endif
 910 }
 911
 912 bool wxCairoFontData::Apply( wxGraphicsContext* context )
 913 {
 914     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 915     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 916 #ifdef __WXGTK__
 917     if (m_wxfont.IsOk())
 918     {
 919         // Nothing to do, the caller uses Pango layout functions to do
 920         // everything.
 921         return true;
 922     }
 923 #elif defined(__WXMAC__)
 924     if ( m_font )
 925     {
 926         cairo_set_font_face(ctext, m_font);
 927         cairo_set_font_size(ctext, m_size );
 928         return true;
 929     }
 930 #endif
 931
 932     // If we get here, we must be on a platform without native font support or
 933     // we're using toy Cairo API even under wxGTK/wxMac.
 934     cairo_select_font_face(ctext, m_fontName, m_slant, m_weight );
 935     cairo_set_font_size(ctext, m_size );
 936
 937     // Indicate that we don't use native fonts for the platforms which care
 938     // about this (currently only wxGTK).
 939     return false;
 940 }
 941
 942 //-----------------------------------------------------------------------------
 943 // wxCairoPathData implementation
 944 //-----------------------------------------------------------------------------
 945
 946 wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
 947     : wxGraphicsPathData(renderer)
 948 {
 949     if (pathcontext)
 950     {
 951         m_pathContext = pathcontext;
 952     }
 953     else
 954     {
 955         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 956         m_pathContext = cairo_create(surface);
 957         cairo_surface_destroy (surface);
 958     }
 959 }
 960
 961 wxCairoPathData::~wxCairoPathData()
 962 {
 963     cairo_destroy(m_pathContext);
 964 }
 965
 966 wxGraphicsObjectRefData *wxCairoPathData::Clone() const
 967 {
 968     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 969     cairo_t* pathcontext = cairo_create(surface);
 970     cairo_surface_destroy (surface);
 971
 972     cairo_path_t* path = cairo_copy_path(m_pathContext);
 973     cairo_append_path(pathcontext, path);
 974     cairo_path_destroy(path);
 975     return new wxCairoPathData( GetRenderer() ,pathcontext);
 976 }
 977
 978
 979 void* wxCairoPathData::GetNativePath() const
 980 {
 981     return cairo_copy_path(m_pathContext) ;
 982 }
 983
 984 void wxCairoPathData::UnGetNativePath(void *p) const
 985 {
 986     cairo_path_destroy((cairo_path_t*)p);
 987 }
 988
 989 //
 990 // The Primitives
 991 //
 992
 993 void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
 994 {
 995     cairo_move_to(m_pathContext,x,y);
 996 }
 997
 998 void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
 999 {
1000     cairo_line_to(m_pathContext,x,y);
1001 }
1002
1003 void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
1004 {
1005     cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
1006     cairo_append_path(m_pathContext, p);
1007     UnGetNativePath(p);
1008 }
1009
1010 void wxCairoPathData::CloseSubpath()
1011 {
1012     cairo_close_path(m_pathContext);
1013 }
1014
1015 void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1016 {
1017     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
1018 }
1019
1020 // gets the last point of the current path, (0,0) if not yet set
1021 void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1022 {
1023     double dx,dy;
1024     cairo_get_current_point(m_pathContext,&dx,&dy);
1025     if (x)
1026         *x = dx;
1027     if (y)
1028         *y = dy;
1029 }
1030
1031 void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
1032 {
1033     // as clockwise means positive in our system (y pointing downwards)
1034     // TODO make this interpretation dependent of the
1035     // real device trans
1036     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
1037         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
1038     else
1039         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
1040 }
1041
1042 // transforms each point of this path by the matrix
1043 void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
1044 {
1045     // as we don't have a true path object, we have to apply the inverse
1046     // matrix to the context
1047     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
1048     cairo_matrix_invert( &m );
1049     cairo_transform(m_pathContext,&m);
1050 }
1051
1052 // gets the bounding box enclosing all points (possibly including control points)
1053 void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1054 {
1055     double x1,y1,x2,y2;
1056
1057     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
1058     if ( x2 < x1 )
1059     {
1060         *x = x2;
1061         *w = x1-x2;
1062     }
1063     else
1064     {
1065         *x = x1;
1066         *w = x2-x1;
1067     }
1068
1069     if( y2 < y1 )
1070     {
1071         *y = y2;
1072         *h = y1-y2;
1073     }
1074     else
1075     {
1076         *y = y1;
1077         *h = y2-y1;
1078     }
1079 }
1080
1081 bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
1082 {
1083     cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1084     return cairo_in_fill( m_pathContext, x, y) != 0;
1085 }
1086
1087 //-----------------------------------------------------------------------------
1088 // wxCairoMatrixData implementation
1089 //-----------------------------------------------------------------------------
1090
1091 wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
1092     : wxGraphicsMatrixData(renderer)
1093 {
1094     if ( matrix )
1095         m_matrix = *matrix;
1096 }
1097
1098 wxCairoMatrixData::~wxCairoMatrixData()
1099 {
1100     // nothing to do
1101 }
1102
1103 wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
1104 {
1105     return new wxCairoMatrixData(GetRenderer(),&m_matrix);
1106 }
1107
1108 // concatenates the matrix
1109 void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
1110 {
1111     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
1112 }
1113
1114 // sets the matrix to the respective values
1115 void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1116                         wxDouble tx, wxDouble ty)
1117 {
1118     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
1119 }
1120
1121 // gets the component valuess of the matrix
1122 void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
1123                             wxDouble* d, wxDouble* tx, wxDouble* ty) const
1124 {
1125     if (a)  *a = m_matrix.xx;
1126     if (b)  *b = m_matrix.yx;
1127     if (c)  *c = m_matrix.xy;
1128     if (d)  *d = m_matrix.yy;
1129     if (tx) *tx= m_matrix.x0;
1130     if (ty) *ty= m_matrix.y0;
1131 }
1132
1133 // makes this the inverse matrix
1134 void wxCairoMatrixData::Invert()
1135 {
1136     cairo_matrix_invert( &m_matrix );
1137 }
1138
1139 // returns true if the elements of the transformation matrix are equal ?
1140 bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1141 {
1142     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
1143     return (
1144         m_matrix.xx == tm->xx &&
1145         m_matrix.yx == tm->yx &&
1146         m_matrix.xy == tm->xy &&
1147         m_matrix.yy == tm->yy &&
1148         m_matrix.x0 == tm->x0 &&
1149         m_matrix.y0 == tm->y0 ) ;
1150 }
1151
1152 // return true if this is the identity matrix
1153 bool wxCairoMatrixData::IsIdentity() const
1154 {
1155     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
1156         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
1157 }
1158
1159 //
1160 // transformation
1161 //
1162
1163 // add the translation to this matrix
1164 void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
1165 {
1166     cairo_matrix_translate( &m_matrix, dx, dy) ;
1167 }
1168
1169 // add the scale to this matrix
1170 void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1171 {
1172     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
1173 }
1174
1175 // add the rotation to this matrix (radians)
1176 void wxCairoMatrixData::Rotate( wxDouble angle )
1177 {
1178     cairo_matrix_rotate( &m_matrix, angle) ;
1179 }
1180
1181 //
1182 // apply the transforms
1183 //
1184
1185 // applies that matrix to the point
1186 void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1187 {
1188     double lx = *x, ly = *y ;
1189     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
1190     *x = lx;
1191     *y = ly;
1192 }
1193
1194 // applies the matrix except for translations
1195 void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1196 {
1197     double lx = *dx, ly = *dy ;
1198     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
1199     *dx = lx;
1200     *dy = ly;
1201 }
1202
1203 // returns the native representation
1204 void * wxCairoMatrixData::GetNativeMatrix() const
1205 {
1206     return (void*) &m_matrix;
1207 }
1208
1209 // ----------------------------------------------------------------------------
1210 // wxCairoBitmap implementation
1211 // ----------------------------------------------------------------------------
1212
1213 int wxCairoBitmapData::InitBuffer(int width, int height, cairo_format_t format)
1214 {
1215     wxUnusedVar(format); // Only really unused with Cairo < 1.6.
1216
1217     // Determine the stride: use cairo_format_stride_for_width() if available
1218     // but fall back to 4*width for the earlier versions as this is what that
1219     // function always returns, even in latest Cairo, anyhow.
1220     int stride;
1221 #if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 6, 0)
1222     if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 6, 0) )
1223     {
1224         stride = cairo_format_stride_for_width(format, width);
1225
1226         // All our code would totally break if stride were not a multiple of 4
1227         // so ensure this is the case.
1228         if ( stride % 4 )
1229         {
1230             wxFAIL_MSG("Unexpected Cairo image surface stride.");
1231
1232             stride += 4 - stride % 4;
1233         }
1234     }
1235     else
1236 #endif
1237         stride = 4*width;
1238
1239     m_width = width;
1240     m_height = height;
1241     m_buffer = new unsigned char[height*stride];
1242
1243     return stride;
1244 }
1245
1246 void wxCairoBitmapData::InitSurface(cairo_format_t format, int stride)
1247 {
1248     m_surface = cairo_image_surface_create_for_data(
1249                             m_buffer, format, m_width, m_height, stride);
1250     m_pattern = cairo_pattern_create_for_surface(m_surface);
1251 }
1252
1253 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
1254     wxGraphicsBitmapData( renderer )
1255 {
1256     m_surface = bitmap;
1257     m_pattern = cairo_pattern_create_for_surface(m_surface);
1258 }
1259
1260 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsBitmapData( renderer )
1261 {
1262     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
1263
1264 #ifdef wxHAS_RAW_BITMAP
1265     // Create a surface object and copy the bitmap pixel data to it.  if the
1266     // image has alpha (or a mask represented as alpha) then we'll use a
1267     // different format and iterator than if it doesn't...
1268     cairo_format_t bufferFormat = bmp.GetDepth() == 32
1269 #if defined(__WXGTK__) && !defined(__WXGTK3__)
1270                                             || bmp.GetMask()
1271 #endif
1272                                         ? CAIRO_FORMAT_ARGB32
1273                                         : CAIRO_FORMAT_RGB24;
1274
1275     int stride = InitBuffer(bmp.GetWidth(), bmp.GetHeight(), bufferFormat);
1276
1277     wxBitmap bmpSource = bmp;  // we need a non-const instance
1278     wxUint32* data = (wxUint32*)m_buffer;
1279
1280     if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
1281     {
1282         // use the bitmap's alpha
1283         wxAlphaPixelData
1284             pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
1285         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1286
1287         wxAlphaPixelData::Iterator p(pixData);
1288         for (int y=0; y<m_height; y++)
1289         {
1290             wxAlphaPixelData::Iterator rowStart = p;
1291             wxUint32* const rowStartDst = data;
1292             for (int x=0; x<m_width; x++)
1293             {
1294                 // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
1295                 // with alpha in the upper 8 bits, then red, then green, then
1296                 // blue. The 32-bit quantities are stored native-endian.
1297                 // Pre-multiplied alpha is used.
1298                 unsigned char alpha = p.Alpha();
1299                 if (alpha == 0)
1300                     *data = 0;
1301                 else
1302                     *data = ( alpha                      << 24
1303                               | (p.Red() * alpha/255)    << 16
1304                               | (p.Green() * alpha/255)  <<  8
1305                               | (p.Blue() * alpha/255) );
1306                 ++data;
1307                 ++p;
1308             }
1309
1310             data = rowStartDst + stride / 4;
1311             p = rowStart;
1312             p.OffsetY(pixData, 1);
1313         }
1314     }
1315     else  // no alpha
1316     {
1317         wxNativePixelData
1318             pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
1319         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1320
1321         wxNativePixelData::Iterator p(pixData);
1322         for (int y=0; y<m_height; y++)
1323         {
1324             wxNativePixelData::Iterator rowStart = p;
1325             wxUint32* const rowStartDst = data;
1326             for (int x=0; x<m_width; x++)
1327             {
1328                 // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
1329                 // the upper 8 bits unused. Red, Green, and Blue are stored in
1330                 // the remaining 24 bits in that order.  The 32-bit quantities
1331                 // are stored native-endian.
1332                 *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
1333                 ++data;
1334                 ++p;
1335             }
1336
1337             data = rowStartDst + stride / 4;
1338             p = rowStart;
1339             p.OffsetY(pixData, 1);
1340         }
1341     }
1342 #if defined(__WXMSW__) || defined(__WXGTK3__)
1343     // if there is a mask, set the alpha bytes in the target buffer to
1344     // fully transparent or fully opaque
1345     if (bmpSource.GetMask())
1346     {
1347         wxBitmap bmpMask = bmpSource.GetMaskBitmap();
1348         bufferFormat = CAIRO_FORMAT_ARGB32;
1349         data = (wxUint32*)m_buffer;
1350         wxNativePixelData
1351             pixData(bmpMask, wxPoint(0, 0), wxSize(m_width, m_height));
1352         wxCHECK_RET( pixData, wxT("Failed to gain raw access to mask data."));
1353
1354         wxNativePixelData::Iterator p(pixData);
1355         for (int y=0; y<m_height; y++)
1356         {
1357             wxNativePixelData::Iterator rowStart = p;
1358             wxUint32* const rowStartDst = data;
1359             for (int x=0; x<m_width; x++)
1360             {
1361                 if (p.Red()+p.Green()+p.Blue() == 0)
1362                     *data = 0;
1363                 else
1364                     *data = (wxALPHA_OPAQUE << 24) | (*data & 0x00FFFFFF);
1365                 ++data;
1366                 ++p;
1367             }
1368
1369             data = rowStartDst + stride / 4;
1370             p = rowStart;
1371             p.OffsetY(pixData, 1);
1372         }
1373     }
1374 #endif
1375
1376     InitSurface(bufferFormat, stride);
1377 #endif // wxHAS_RAW_BITMAP
1378 }
1379
1380 #if wxUSE_IMAGE
1381
1382 // Helper functions for dealing with alpha pre-multiplication.
1383 namespace
1384 {
1385
1386 inline unsigned char Premultiply(unsigned char alpha, unsigned char data)
1387 {
1388     return alpha ? (data * alpha)/0xff : data;
1389 }
1390
1391 inline unsigned char Unpremultiply(unsigned char alpha, unsigned char data)
1392 {
1393     return alpha ? (data * 0xff)/alpha : data;
1394 }
1395
1396 } // anonymous namespace
1397
1398 wxCairoBitmapData::wxCairoBitmapData(wxGraphicsRenderer* renderer,
1399                                      const wxImage& image)
1400     : wxGraphicsBitmapData(renderer)
1401 {
1402     const cairo_format_t bufferFormat = image.HasAlpha()
1403                                             ? CAIRO_FORMAT_ARGB32
1404                                             : CAIRO_FORMAT_RGB24;
1405
1406     int stride = InitBuffer(image.GetWidth(), image.GetHeight(), bufferFormat);
1407
1408     // Copy wxImage data into the buffer. Notice that we work with wxUint32
1409     // values and not bytes becase Cairo always works with buffers in native
1410     // endianness.
1411     wxUint32* dst = reinterpret_cast<wxUint32*>(m_buffer);
1412     const unsigned char* src = image.GetData();
1413
1414     if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
1415     {
1416         const unsigned char* alpha = image.GetAlpha();
1417
1418         for ( int y = 0; y < m_height; y++ )
1419         {
1420             wxUint32* const rowStartDst = dst;
1421
1422             for ( int x = 0; x < m_width; x++ )
1423             {
1424                 const unsigned char a = *alpha++;
1425
1426                 *dst++ = a                      << 24 |
1427                          Premultiply(a, src[0]) << 16 |
1428                          Premultiply(a, src[1]) <<  8 |
1429                          Premultiply(a, src[2]);
1430                 src += 3;
1431             }
1432
1433             dst = rowStartDst + stride / 4;
1434         }
1435     }
1436     else // RGB
1437     {
1438         for ( int y = 0; y < m_height; y++ )
1439         {
1440             wxUint32* const rowStartDst = dst;
1441
1442             for ( int x = 0; x < m_width; x++ )
1443             {
1444                 *dst++ = src[0] << 16 |
1445                          src[1] <<  8 |
1446                          src[2];
1447                 src += 3;
1448             }
1449
1450             dst = rowStartDst + stride / 4;
1451         }
1452     }
1453
1454     InitSurface(bufferFormat, stride);
1455 }
1456
1457 wxImage wxCairoBitmapData::ConvertToImage() const
1458 {
1459     wxImage image(m_width, m_height, false /* don't clear */);
1460
1461     // Get the surface type and format.
1462     wxCHECK_MSG( cairo_surface_get_type(m_surface) == CAIRO_SURFACE_TYPE_IMAGE,
1463                  wxNullImage,
1464                  wxS("Can't convert non-image surface to image.") );
1465
1466     switch ( cairo_image_surface_get_format(m_surface) )
1467     {
1468         case CAIRO_FORMAT_ARGB32:
1469             image.SetAlpha();
1470             break;
1471
1472         case CAIRO_FORMAT_RGB24:
1473             // Nothing to do, we don't use alpha by default.
1474             break;
1475
1476         case CAIRO_FORMAT_A8:
1477         case CAIRO_FORMAT_A1:
1478             wxFAIL_MSG(wxS("Unsupported Cairo image surface type."));
1479             return wxNullImage;
1480
1481         default:
1482             wxFAIL_MSG(wxS("Unknown Cairo image surface type."));
1483             return wxNullImage;
1484     }
1485
1486     // Prepare for copying data.
1487     const wxUint32* src = (wxUint32*)cairo_image_surface_get_data(m_surface);
1488     wxCHECK_MSG( src, wxNullImage, wxS("Failed to get Cairo surface data.") );
1489
1490     int stride = cairo_image_surface_get_stride(m_surface);
1491     wxCHECK_MSG( stride > 0, wxNullImage,
1492                  wxS("Failed to get Cairo surface stride.") );
1493
1494     // As we work with wxUint32 pointers and not char ones, we need to adjust
1495     // the stride accordingly. This should be lossless as the stride must be a
1496     // multiple of pixel size.
1497     wxASSERT_MSG( !(stride % sizeof(wxUint32)), wxS("Unexpected stride.") );
1498     stride /= sizeof(wxUint32);
1499
1500     unsigned char* dst = image.GetData();
1501     unsigned char *alpha = image.GetAlpha();
1502     if ( alpha )
1503     {
1504         // We need to also copy alpha and undo the pre-multiplication as Cairo
1505         // stores pre-multiplied values in this format while wxImage does not.
1506         for ( int y = 0; y < m_height; y++ )
1507         {
1508             const wxUint32* const rowStart = src;
1509             for ( int x = 0; x < m_width; x++ )
1510             {
1511                 const wxUint32 argb = *src++;
1512
1513                 *alpha++ = (argb & 0xff000000) >> 24;
1514
1515                 // Copy the RGB data undoing the pre-multiplication.
1516                 *dst++ = Unpremultiply(*alpha, (argb & 0x00ff0000) >> 16);
1517                 *dst++ = Unpremultiply(*alpha, (argb & 0x0000ff00) >>  8);
1518                 *dst++ = Unpremultiply(*alpha, (argb & 0x000000ff));
1519             }
1520
1521             src = rowStart + stride;
1522         }
1523     }
1524     else // RGB
1525     {
1526         // Things are pretty simple in this case, just copy RGB bytes.
1527         for ( int y = 0; y < m_height; y++ )
1528         {
1529             const wxUint32* const rowStart = src;
1530             for ( int x = 0; x < m_width; x++ )
1531             {
1532                 const wxUint32 argb = *src++;
1533
1534                 *dst++ = (argb & 0x00ff0000) >> 16;
1535                 *dst++ = (argb & 0x0000ff00) >>  8;
1536                 *dst++ = (argb & 0x000000ff);
1537             }
1538
1539             src = rowStart + stride;
1540         }
1541     }
1542
1543     return image;
1544 }
1545
1546 #endif // wxUSE_IMAGE
1547
1548 wxCairoBitmapData::~wxCairoBitmapData()
1549 {
1550     if (m_pattern)
1551         cairo_pattern_destroy(m_pattern);
1552
1553     if (m_surface)
1554         cairo_surface_destroy(m_surface);
1555
1556     delete [] m_buffer;
1557 }
1558
1559 //-----------------------------------------------------------------------------
1560 // wxCairoContext implementation
1561 //-----------------------------------------------------------------------------
1562
1563 class wxCairoOffsetHelper
1564 {
1565 public :
1566     wxCairoOffsetHelper( cairo_t* ctx , bool offset )
1567     {
1568         m_ctx = ctx;
1569         m_offset = offset;
1570         if ( m_offset )
1571              cairo_translate( m_ctx, 0.5, 0.5 );
1572     }
1573     ~wxCairoOffsetHelper( )
1574     {
1575         if ( m_offset )
1576             cairo_translate( m_ctx, -0.5, -0.5 );
1577     }
1578 public :
1579     cairo_t* m_ctx;
1580     bool m_offset;
1581 } ;
1582
1583 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
1584 : wxGraphicsContext(renderer)
1585 {
1586 #ifdef __WXMSW__
1587     // wxMSW contexts always use MM_ANISOTROPIC, which messes up
1588     // text rendering when printing using Cairo. Switch it to MM_TEXT
1589     // map mode to avoid this problem.
1590     HDC hdc = (HDC)dc.GetHDC();
1591     ::SetMapMode(hdc, MM_TEXT);
1592     m_mswSurface = cairo_win32_printing_surface_create(hdc);
1593     Init( cairo_create(m_mswSurface) );
1594 #endif
1595
1596 #ifdef __WXGTK20__
1597     const wxDCImpl *impl = dc.GetImpl();
1598     Init( (cairo_t*) impl->GetCairoContext() );
1599 #endif
1600     wxSize sz = dc.GetSize();
1601     m_width = sz.x;
1602     m_height = sz.y;
1603
1604     wxPoint org = dc.GetDeviceOrigin();
1605     cairo_translate( m_context, org.x, org.y );
1606
1607     double sx,sy;
1608     dc.GetUserScale( &sx, &sy );
1609
1610 // TODO: Determine if these fixes are needed on other platforms too.
1611 // On MSW, without this the printer context will not respect wxDC SetMapMode calls.
1612 // For example, using dc.SetMapMode(wxMM_POINTS) can let us share printer and screen
1613 // drawing code
1614 #ifdef __WXMSW__
1615     double lsx,lsy;
1616     dc.GetLogicalScale( &lsx, &lsy );
1617     sx *= lsx;
1618     sy *= lsy;
1619 #endif
1620     cairo_scale( m_context, sx, sy );
1621
1622     org = dc.GetLogicalOrigin();
1623     cairo_translate( m_context, -org.x, -org.y );
1624 }
1625
1626 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
1627 : wxGraphicsContext(renderer)
1628 {
1629     int width, height;
1630     dc.GetSize( &width, &height );
1631     m_width = width;
1632     m_height = height;
1633
1634     m_enableOffset = true;
1635
1636 #ifdef __WXMSW__
1637     m_mswSurface = cairo_win32_surface_create((HDC)dc.GetHDC());
1638     Init( cairo_create(m_mswSurface) );
1639 #endif
1640
1641 #ifdef __WXGTK3__
1642     cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
1643     if (cr)
1644         Init(cr);
1645 #elif defined __WXGTK20__
1646     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1647     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1648
1649 #if 0
1650     wxGraphicsMatrix matrix = CreateMatrix();
1651
1652     wxPoint org = dc.GetDeviceOrigin();
1653     matrix.Translate( org.x, org.y );
1654
1655     org = dc.GetLogicalOrigin();
1656     matrix.Translate( -org.x, -org.y );
1657
1658     double sx,sy;
1659     dc.GetUserScale( &sx, &sy );
1660     matrix.Scale( sx, sy );
1661
1662     ConcatTransform( matrix );
1663 #endif
1664 #endif
1665
1666 #ifdef __WXMAC__
1667     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1668     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1669     Init( cairo_create( surface ) );
1670     cairo_surface_destroy( surface );
1671 #endif
1672 }
1673
1674 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
1675 : wxGraphicsContext(renderer)
1676 {
1677     int width, height;
1678     dc.GetSize( &width, &height );
1679     m_width = width;
1680     m_height = height;
1681
1682     m_enableOffset = true;
1683
1684 #ifdef __WXMSW__
1685
1686     HDC hdc = (HDC)dc.GetHDC();
1687
1688     HBITMAP bitmap = (HBITMAP)GetCurrentObject(hdc, OBJ_BITMAP);
1689
1690     BITMAP info;
1691     bool hasBitmap = false;
1692
1693     // cairo_win32_surface_create creates a 24-bit bitmap,
1694     // so if we have alpha, we need to create a 32-bit surface instead.
1695     if (!GetObject(bitmap, sizeof(info), &info) || info.bmBitsPixel < 32)
1696         m_mswSurface = cairo_win32_surface_create(hdc);
1697     else {
1698         hasBitmap = true;
1699         m_mswSurface = cairo_image_surface_create_for_data((unsigned char*)info.bmBits,
1700                                                CAIRO_FORMAT_ARGB32,
1701                                                info.bmWidth,
1702                                                info.bmHeight,
1703                                                info.bmWidthBytes);
1704     }
1705
1706     Init( cairo_create(m_mswSurface) );
1707     // If we've created a image surface, we need to flip the Y axis so that
1708     // all drawing will appear right side up.
1709     if (hasBitmap) {
1710         cairo_matrix_t matrix;
1711         cairo_matrix_init(&matrix, 1.0, 0.0, 0.0, -1.0, 0.0, height);
1712         cairo_set_matrix(m_context, &matrix);
1713     }
1714 #endif
1715
1716 #ifdef __WXGTK3__
1717     cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
1718     if (cr)
1719         Init(cr);
1720 #elif defined __WXGTK20__
1721     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1722     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1723
1724 #if 0
1725     wxGraphicsMatrix matrix = CreateMatrix();
1726
1727     wxPoint org = dc.GetDeviceOrigin();
1728     matrix.Translate( org.x, org.y );
1729
1730     org = dc.GetLogicalOrigin();
1731     matrix.Translate( -org.x, -org.y );
1732
1733     double sx,sy;
1734     dc.GetUserScale( &sx, &sy );
1735     matrix.Scale( sx, sy );
1736
1737     ConcatTransform( matrix );
1738 #endif
1739 #endif
1740
1741 #ifdef __WXMAC__
1742     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1743     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1744     Init( cairo_create( surface ) );
1745     cairo_surface_destroy( surface );
1746 #endif
1747 }
1748
1749 #ifdef __WXGTK20__
1750 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window )
1751 : wxGraphicsContext(renderer)
1752 {
1753     Init( gdk_cairo_create( window ) );
1754
1755 #ifdef __WXGTK3__
1756     m_width = gdk_window_get_width(window);
1757     m_height = gdk_window_get_height(window);
1758 #else
1759     int width, height;
1760     gdk_drawable_get_size(window, &width, &height);
1761     m_width = width;
1762     m_height = height;
1763 #endif
1764 }
1765 #endif
1766
1767 #ifdef __WXMSW__
1768 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
1769 : wxGraphicsContext(renderer)
1770 {
1771     m_mswSurface = cairo_win32_surface_create(handle);
1772     Init( cairo_create(m_mswSurface) );
1773     m_width =
1774     m_height = 0;
1775 }
1776 #endif
1777
1778
1779 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1780 : wxGraphicsContext(renderer)
1781 {
1782     Init( context );
1783     m_width =
1784     m_height = 0;
1785 }
1786
1787 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1788     : wxGraphicsContext(renderer)
1789 #ifdef __WXMSW__
1790     , m_mswWindowHDC(GetHwndOf(window))
1791 #endif
1792 {
1793     m_enableOffset = true;
1794 #ifdef __WXGTK__
1795     // something along these lines (copied from dcclient)
1796
1797     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1798     // code should still be able to create wxClientDCs for them, so we will
1799     // use the parent window here then.
1800     if (window->m_wxwindow == NULL)
1801     {
1802         window = window->GetParent();
1803     }
1804
1805     wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
1806
1807     Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
1808
1809     wxSize sz = window->GetSize();
1810     m_width = sz.x;
1811     m_height = sz.y;
1812 #endif
1813
1814 #ifdef __WXMSW__
1815     m_mswSurface = cairo_win32_surface_create((HDC)m_mswWindowHDC);
1816     Init(cairo_create(m_mswSurface));
1817 #endif
1818
1819 }
1820
1821 wxCairoContext::wxCairoContext(wxGraphicsRenderer* renderer) :
1822     wxGraphicsContext(renderer)
1823 {
1824     m_context = NULL;
1825 }
1826
1827 wxCairoContext::~wxCairoContext()
1828 {
1829     if ( m_context )
1830     {
1831         PopState();
1832         PopState();
1833         cairo_destroy(m_context);
1834     }
1835 #ifdef __WXMSW__
1836     if ( m_mswSurface )
1837         cairo_surface_destroy(m_mswSurface);
1838 #endif
1839 }
1840
1841 void wxCairoContext::Init(cairo_t *context)
1842 {
1843     m_context = context ;
1844     PushState();
1845     PushState();
1846 }
1847
1848
1849 void wxCairoContext::Clip( const wxRegion& region )
1850 {
1851     // Create a path with all the rectangles in the region
1852     wxGraphicsPath path = GetRenderer()->CreatePath();
1853     wxRegionIterator ri(region);
1854     while (ri)
1855     {
1856         path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
1857         ++ri;
1858     }
1859
1860     // Put it in the context
1861     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1862     cairo_append_path(m_context, cp);
1863
1864     // clip to that path
1865     cairo_clip(m_context);
1866     path.UnGetNativePath(cp);
1867 }
1868
1869 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1870 {
1871     // Create a path with this rectangle
1872     wxGraphicsPath path = GetRenderer()->CreatePath();
1873     path.AddRectangle(x,y,w,h);
1874
1875     // Put it in the context
1876     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1877     cairo_append_path(m_context, cp);
1878
1879     // clip to that path
1880     cairo_clip(m_context);
1881     path.UnGetNativePath(cp);
1882 }
1883
1884 void wxCairoContext::ResetClip()
1885 {
1886     cairo_reset_clip(m_context);
1887 }
1888
1889
1890 void wxCairoContext::StrokePath( const wxGraphicsPath& path )
1891 {
1892     if ( !m_pen.IsNull() )
1893     {
1894         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1895         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1896         cairo_append_path(m_context,cp);
1897         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1898         cairo_stroke(m_context);
1899         path.UnGetNativePath(cp);
1900     }
1901 }
1902
1903 void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1904 {
1905     if ( !m_brush.IsNull() )
1906     {
1907         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1908         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1909         cairo_append_path(m_context,cp);
1910         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1911         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1912         cairo_fill(m_context);
1913         path.UnGetNativePath(cp);
1914     }
1915 }
1916
1917 void wxCairoContext::Rotate( wxDouble angle )
1918 {
1919     cairo_rotate(m_context,angle);
1920 }
1921
1922 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1923 {
1924     cairo_translate(m_context,dx,dy);
1925 }
1926
1927 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1928 {
1929     cairo_scale(m_context,xScale,yScale);
1930 }
1931
1932 // concatenates this transform with the current transform of this context
1933 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1934 {
1935     cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
1936 }
1937
1938 // sets the transform of this context
1939 void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
1940 {
1941     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
1942 }
1943
1944 // gets the matrix of this context
1945 wxGraphicsMatrix wxCairoContext::GetTransform() const
1946 {
1947     wxGraphicsMatrix matrix = CreateMatrix();
1948     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
1949     return matrix;
1950 }
1951
1952
1953
1954 void wxCairoContext::PushState()
1955 {
1956     cairo_save(m_context);
1957 }
1958
1959 void wxCairoContext::PopState()
1960 {
1961     cairo_restore(m_context);
1962 }
1963
1964 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1965 {
1966     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1967     DrawBitmap(bitmap, x, y, w, h);
1968
1969 }
1970
1971 void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1972 {
1973     PushState();
1974
1975     // In case we're scaling the image by using a width and height different
1976     // than the bitmap's size create a pattern transformation on the surface and
1977     // draw the transformed pattern.
1978     wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
1979     cairo_pattern_t* pattern = data->GetCairoPattern();
1980     wxSize size = data->GetSize();
1981
1982     wxDouble scaleX = w / size.GetWidth();
1983     wxDouble scaleY = h / size.GetHeight();
1984
1985     // prepare to draw the image
1986     cairo_translate(m_context, x, y);
1987     cairo_scale(m_context, scaleX, scaleY);
1988     cairo_set_source(m_context, pattern);
1989     // use the original size here since the context is scaled already...
1990     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
1991     // fill the rectangle using the pattern
1992     cairo_fill(m_context);
1993
1994     PopState();
1995 }
1996
1997 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1998 {
1999     // An icon is a bitmap on wxGTK, so do this the easy way.  When we want to
2000     // start using the Cairo backend on other platforms then we may need to
2001     // fiddle with this...
2002     DrawBitmap(icon, x, y, w, h);
2003 }
2004
2005
2006 void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
2007 {
2008     wxCHECK_RET( !m_font.IsNull(),
2009                  wxT("wxCairoContext::DrawText - no valid font set") );
2010
2011     if ( str.empty())
2012         return;
2013
2014     const wxCharBuffer data = str.utf8_str();
2015     if ( !data )
2016         return;
2017
2018     if ( ((wxCairoFontData*)m_font.GetRefData())->Apply(this) )
2019     {
2020 #ifdef __WXGTK__
2021         PangoLayout *layout = pango_cairo_create_layout (m_context);
2022         const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
2023         pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
2024         pango_layout_set_text(layout, data, data.length());
2025         font.GTKSetPangoAttrs(layout);
2026
2027         cairo_move_to(m_context, x, y);
2028         pango_cairo_show_layout (m_context, layout);
2029
2030         g_object_unref (layout);
2031
2032         // Don't use Cairo text API, we already did everything.
2033         return;
2034 #endif
2035     }
2036
2037     // Cairo's x,y for drawing text is at the baseline, so we need to adjust
2038     // the position we move to by the ascent.
2039     cairo_font_extents_t fe;
2040     cairo_font_extents(m_context, &fe);
2041     cairo_move_to(m_context, x, y+fe.ascent);
2042
2043     cairo_show_text(m_context, data);
2044 }
2045
2046 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2047                                     wxDouble *descent, wxDouble *externalLeading ) const
2048 {
2049     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
2050
2051     if ( width )
2052         *width = 0;
2053     if ( height )
2054         *height = 0;
2055     if ( descent )
2056         *descent = 0;
2057     if ( externalLeading )
2058         *externalLeading = 0;
2059
2060     if ( str.empty())
2061         return;
2062
2063     if ( ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this) )
2064     {
2065 #ifdef __WXGTK__
2066         int w, h;
2067
2068         PangoLayout *layout = pango_cairo_create_layout (m_context);
2069         const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
2070         pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
2071         const wxCharBuffer data = str.utf8_str();
2072         if ( !data )
2073         {
2074             return;
2075         }
2076         pango_layout_set_text(layout, data, data.length());
2077         pango_layout_get_pixel_size (layout, &w, &h);
2078         if ( width )
2079             *width = w;
2080         if ( height )
2081             *height = h;
2082         if (descent)
2083         {
2084             PangoLayoutIter *iter = pango_layout_get_iter(layout);
2085             int baseline = pango_layout_iter_get_baseline(iter);
2086             pango_layout_iter_free(iter);
2087             *descent = h - PANGO_PIXELS(baseline);
2088         }
2089         g_object_unref (layout);
2090         return;
2091 #endif
2092     }
2093
2094     if (width)
2095     {
2096         const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
2097         cairo_text_extents_t te;
2098         cairo_text_extents(m_context, buf, &te);
2099         *width = te.width;
2100     }
2101
2102     if (height || descent || externalLeading)
2103     {
2104         cairo_font_extents_t fe;
2105         cairo_font_extents(m_context, &fe);
2106
2107         // some backends have negative descents
2108
2109         if ( fe.descent < 0 )
2110             fe.descent = -fe.descent;
2111
2112         if ( fe.height < (fe.ascent + fe.descent ) )
2113         {
2114             // some backends are broken re height ... (eg currently ATSUI)
2115             fe.height = fe.ascent + fe.descent;
2116         }
2117
2118         if (height)
2119             *height = fe.height;
2120         if ( descent )
2121             *descent = fe.descent;
2122         if ( externalLeading )
2123             *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
2124     }
2125 }
2126
2127 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2128 {
2129     widths.Empty();
2130     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
2131 #if __WXGTK__
2132     const wxCharBuffer data = text.utf8_str();
2133     int w = 0;
2134     if (data.length())
2135     {
2136         PangoLayout* layout = pango_cairo_create_layout(m_context);
2137         const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
2138         pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
2139         pango_layout_set_text(layout, data, data.length());
2140         PangoLayoutIter* iter = pango_layout_get_iter(layout);
2141         PangoRectangle rect;
2142         do {
2143             pango_layout_iter_get_cluster_extents(iter, NULL, &rect);
2144             w += rect.width;
2145             widths.Add(PANGO_PIXELS(w));
2146         } while (pango_layout_iter_next_cluster(iter));
2147         pango_layout_iter_free(iter);
2148         g_object_unref(layout);
2149     }
2150     size_t i = widths.GetCount();
2151     const size_t len = text.length();
2152     while (i++ < len)
2153         widths.Add(PANGO_PIXELS(w));
2154 #else
2155     // TODO
2156 #endif
2157 }
2158
2159 void * wxCairoContext::GetNativeContext()
2160 {
2161     return m_context;
2162 }
2163
2164 bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
2165 {
2166     if (m_antialias == antialias)
2167         return true;
2168
2169     m_antialias = antialias;
2170
2171     cairo_antialias_t antialiasMode;
2172     switch (antialias)
2173     {
2174         case wxANTIALIAS_DEFAULT:
2175             antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
2176             break;
2177         case wxANTIALIAS_NONE:
2178             antialiasMode = CAIRO_ANTIALIAS_NONE;
2179             break;
2180         default:
2181             return false;
2182     }
2183     cairo_set_antialias(m_context, antialiasMode);
2184     return true;
2185 }
2186
2187 bool wxCairoContext::SetInterpolationQuality(wxInterpolationQuality WXUNUSED(interpolation))
2188 {
2189     // placeholder
2190     return false;
2191 }
2192
2193 bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
2194 {
2195     if ( m_composition == op )
2196         return true;
2197
2198     m_composition = op;
2199     cairo_operator_t cop;
2200     switch (op)
2201     {
2202         case wxCOMPOSITION_CLEAR:
2203             cop = CAIRO_OPERATOR_CLEAR;
2204             break;
2205         case wxCOMPOSITION_SOURCE:
2206             cop = CAIRO_OPERATOR_SOURCE;
2207             break;
2208         case wxCOMPOSITION_OVER:
2209             cop = CAIRO_OPERATOR_OVER;
2210             break;
2211         case wxCOMPOSITION_IN:
2212             cop = CAIRO_OPERATOR_IN;
2213             break;
2214         case wxCOMPOSITION_OUT:
2215             cop = CAIRO_OPERATOR_OUT;
2216             break;
2217         case wxCOMPOSITION_ATOP:
2218             cop = CAIRO_OPERATOR_ATOP;
2219             break;
2220         case wxCOMPOSITION_DEST:
2221             cop = CAIRO_OPERATOR_DEST;
2222             break;
2223         case wxCOMPOSITION_DEST_OVER:
2224             cop = CAIRO_OPERATOR_DEST_OVER;
2225             break;
2226         case wxCOMPOSITION_DEST_IN:
2227             cop = CAIRO_OPERATOR_DEST_IN;
2228             break;
2229         case wxCOMPOSITION_DEST_OUT:
2230             cop = CAIRO_OPERATOR_DEST_OUT;
2231             break;
2232         case wxCOMPOSITION_DEST_ATOP:
2233             cop = CAIRO_OPERATOR_DEST_ATOP;
2234             break;
2235         case wxCOMPOSITION_XOR:
2236             cop = CAIRO_OPERATOR_XOR;
2237             break;
2238         case wxCOMPOSITION_ADD:
2239             cop = CAIRO_OPERATOR_ADD;
2240             break;
2241         default:
2242             return false;
2243     }
2244     cairo_set_operator(m_context, cop);
2245     return true;
2246 }
2247
2248 void wxCairoContext::BeginLayer(wxDouble opacity)
2249 {
2250     m_layerOpacities.push_back(opacity);
2251     cairo_push_group(m_context);
2252 }
2253
2254 void wxCairoContext::EndLayer()
2255 {
2256     float opacity = m_layerOpacities.back();
2257     m_layerOpacities.pop_back();
2258     cairo_pop_group_to_source(m_context);
2259     cairo_paint_with_alpha(m_context,opacity);
2260 }
2261
2262 //-----------------------------------------------------------------------------
2263 // wxCairoRenderer declaration
2264 //-----------------------------------------------------------------------------
2265
2266 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
2267 {
2268 public :
2269     wxCairoRenderer() {}
2270
2271     virtual ~wxCairoRenderer() {}
2272
2273     // Context
2274
2275     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2276     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2277     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
2278
2279     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2280
2281     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2282 #if wxUSE_IMAGE
2283     virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
2284 #endif // wxUSE_IMAGE
2285
2286     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2287
2288     virtual wxGraphicsContext * CreateMeasuringContext();
2289 #ifdef __WXMSW__
2290 #if wxUSE_ENH_METAFILE
2291     virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
2292 #endif
2293 #endif
2294     // Path
2295
2296     virtual wxGraphicsPath CreatePath();
2297
2298     // Matrix
2299
2300     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2301         wxDouble tx=0.0, wxDouble ty=0.0);
2302
2303
2304     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2305
2306     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2307
2308     virtual wxGraphicsBrush
2309     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2310                               wxDouble x2, wxDouble y2,
2311                               const wxGraphicsGradientStops& stops);
2312
2313     virtual wxGraphicsBrush
2314     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2315                               wxDouble xc, wxDouble yc,
2316                               wxDouble radius,
2317                               const wxGraphicsGradientStops& stops);
2318
2319     // sets the font
2320     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2321     virtual wxGraphicsFont CreateFont(double sizeInPixels,
2322                                       const wxString& facename,
2323                                       int flags = wxFONTFLAG_DEFAULT,
2324                                       const wxColour& col = *wxBLACK);
2325
2326     // create a native bitmap representation
2327     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
2328 #if wxUSE_IMAGE
2329     virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
2330     virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp);
2331 #endif // wxUSE_IMAGE
2332
2333     // create a graphics bitmap from a native bitmap
2334     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
2335
2336     // create a subimage from a native image representation
2337     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
2338
2339 protected :
2340     bool EnsureIsLoaded();
2341     void Load();
2342     void Unload();
2343     friend class wxCairoModule;
2344 private :
2345     int m_loaded;
2346     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
2347 } ;
2348
2349 //-----------------------------------------------------------------------------
2350 // wxCairoRenderer implementation
2351 //-----------------------------------------------------------------------------
2352
2353 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
2354
2355 static wxCairoRenderer gs_cairoGraphicsRenderer;
2356 // temporary hack to allow creating a cairo context on any platform
2357 extern wxGraphicsRenderer* gCairoRenderer;
2358 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
2359
2360 bool wxCairoRenderer::EnsureIsLoaded()
2361 {
2362 #ifndef __WXGTK__
2363     Load();
2364     return wxCairoInit();
2365 #else
2366     return true;
2367 #endif
2368 }
2369
2370 void wxCairoRenderer::Load()
2371 {
2372     wxCairoInit();
2373 }
2374
2375 void wxCairoRenderer::Unload()
2376 {
2377     wxCairoCleanUp();
2378 }
2379
2380 // call EnsureIsLoaded() and return returnOnFail value if it fails
2381 #define ENSURE_LOADED_OR_RETURN(returnOnFail)  \
2382     if ( !EnsureIsLoaded() )                   \
2383         return (returnOnFail)
2384
2385 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
2386 {
2387     ENSURE_LOADED_OR_RETURN(NULL);
2388     return new wxCairoContext(this,dc);
2389 }
2390
2391 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
2392 {
2393     ENSURE_LOADED_OR_RETURN(NULL);
2394     return new wxCairoContext(this,dc);
2395 }
2396
2397 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
2398 {
2399     ENSURE_LOADED_OR_RETURN(NULL);
2400     return new wxCairoContext(this, dc);
2401 }
2402
2403 #ifdef __WXMSW__
2404 #if wxUSE_ENH_METAFILE
2405 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxEnhMetaFileDC& WXUNUSED(dc) )
2406 {
2407     ENSURE_LOADED_OR_RETURN(NULL);
2408     return NULL;
2409 }
2410 #endif
2411 #endif
2412
2413 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
2414 {
2415     ENSURE_LOADED_OR_RETURN(NULL);
2416 #ifdef __WXMSW__
2417     return new wxCairoContext(this,(HDC)context);
2418 #else
2419     return new wxCairoContext(this,(cairo_t*)context);
2420 #endif
2421 }
2422
2423
2424 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
2425 {
2426     ENSURE_LOADED_OR_RETURN(NULL);
2427 #ifdef __WXGTK__
2428     return new wxCairoContext(this, static_cast<GdkWindow*>(window));
2429 #else
2430     wxUnusedVar(window);
2431     return NULL;
2432 #endif
2433 }
2434
2435 #if wxUSE_IMAGE
2436 wxGraphicsContext * wxCairoRenderer::CreateContextFromImage(wxImage& image)
2437 {
2438     return new wxCairoImageContext(this, image);
2439 }
2440 #endif // wxUSE_IMAGE
2441
2442 wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
2443 {
2444     ENSURE_LOADED_OR_RETURN(NULL);
2445 #ifdef __WXGTK__
2446     return CreateContextFromNativeWindow(gdk_get_default_root_window());
2447 #else
2448     return NULL;
2449     // TODO
2450 #endif
2451 }
2452
2453 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
2454 {
2455     ENSURE_LOADED_OR_RETURN(NULL);
2456     return new wxCairoContext(this, window );
2457 }
2458
2459 // Path
2460
2461 wxGraphicsPath wxCairoRenderer::CreatePath()
2462 {
2463     ENSURE_LOADED_OR_RETURN(wxNullGraphicsPath);
2464     wxGraphicsPath path;
2465     path.SetRefData( new wxCairoPathData(this) );
2466     return path;
2467 }
2468
2469
2470 // Matrix
2471
2472 wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2473                                                 wxDouble tx, wxDouble ty)
2474
2475 {
2476     ENSURE_LOADED_OR_RETURN(wxNullGraphicsMatrix);
2477     wxGraphicsMatrix m;
2478     wxCairoMatrixData* data = new wxCairoMatrixData( this );
2479     data->Set( a,b,c,d,tx,ty ) ;
2480     m.SetRefData(data);
2481     return m;
2482 }
2483
2484 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
2485 {
2486     ENSURE_LOADED_OR_RETURN(wxNullGraphicsPen);
2487     if ( !pen.IsOk() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT )
2488         return wxNullGraphicsPen;
2489     else
2490     {
2491         wxGraphicsPen p;
2492         p.SetRefData(new wxCairoPenData( this, pen ));
2493         return p;
2494     }
2495 }
2496
2497 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
2498 {
2499     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2500     if ( !brush.IsOk() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT )
2501         return wxNullGraphicsBrush;
2502     else
2503     {
2504         wxGraphicsBrush p;
2505         p.SetRefData(new wxCairoBrushData( this, brush ));
2506         return p;
2507     }
2508 }
2509
2510 wxGraphicsBrush
2511 wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2512                                            wxDouble x2, wxDouble y2,
2513                                            const wxGraphicsGradientStops& stops)
2514 {
2515     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2516     wxGraphicsBrush p;
2517     wxCairoBrushData* d = new wxCairoBrushData( this );
2518     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
2519     p.SetRefData(d);
2520     return p;
2521 }
2522
2523 wxGraphicsBrush
2524 wxCairoRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2525                                            wxDouble xc, wxDouble yc, wxDouble r,
2526                                            const wxGraphicsGradientStops& stops)
2527 {
2528     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2529     wxGraphicsBrush p;
2530     wxCairoBrushData* d = new wxCairoBrushData( this );
2531     d->CreateRadialGradientBrush(xo, yo, xc, yc, r, stops);
2532     p.SetRefData(d);
2533     return p;
2534 }
2535
2536 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
2537 {
2538     ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
2539     if ( font.IsOk() )
2540     {
2541         wxGraphicsFont p;
2542         p.SetRefData(new wxCairoFontData( this , font, col ));
2543         return p;
2544     }
2545     else
2546         return wxNullGraphicsFont;
2547 }
2548
2549 wxGraphicsFont
2550 wxCairoRenderer::CreateFont(double sizeInPixels,
2551                             const wxString& facename,
2552                             int flags,
2553                             const wxColour& col)
2554 {
2555     ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
2556
2557     wxGraphicsFont font;
2558     font.SetRefData(new wxCairoFontData(this, sizeInPixels, facename, flags, col));
2559     return font;
2560 }
2561
2562 wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
2563 {
2564     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2565     if ( bmp.IsOk() )
2566     {
2567         wxGraphicsBitmap p;
2568         p.SetRefData(new wxCairoBitmapData( this , bmp ));
2569         return p;
2570     }
2571     else
2572         return wxNullGraphicsBitmap;
2573 }
2574
2575 #if wxUSE_IMAGE
2576
2577 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromImage(const wxImage& image)
2578 {
2579     wxGraphicsBitmap bmp;
2580
2581     ENSURE_LOADED_OR_RETURN(bmp);
2582
2583     if ( image.IsOk() )
2584     {
2585         bmp.SetRefData(new wxCairoBitmapData(this, image));
2586     }
2587
2588     return bmp;
2589 }
2590
2591 wxImage wxCairoRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
2592 {
2593     ENSURE_LOADED_OR_RETURN(wxNullImage);
2594
2595     const wxCairoBitmapData* const
2596         data = static_cast<wxCairoBitmapData*>(bmp.GetGraphicsData());
2597
2598     return data ? data->ConvertToImage() : wxNullImage;
2599 }
2600
2601 #endif // wxUSE_IMAGE
2602
2603
2604 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
2605 {
2606     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2607     if ( bitmap != NULL )
2608     {
2609         wxGraphicsBitmap p;
2610         p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
2611         return p;
2612     }
2613     else
2614         return wxNullGraphicsBitmap;
2615 }
2616
2617 wxGraphicsBitmap
2618 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
2619                                  wxDouble WXUNUSED(x),
2620                                  wxDouble WXUNUSED(y),
2621                                  wxDouble WXUNUSED(w),
2622                                  wxDouble WXUNUSED(h))
2623 {
2624     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2625     wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
2626     return wxNullGraphicsBitmap;
2627 }
2628
2629 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2630 {
2631     return &gs_cairoGraphicsRenderer;
2632 }
2633
2634 #else // !wxUSE_CAIRO
2635
2636 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2637 {
2638     return NULL;
2639 }
2640
2641 #endif  // wxUSE_CAIRO/!wxUSE_CAIRO
2642
2643 // MSW and OS X have their own native default renderers, but the other ports
2644 // use Cairo by default
2645 #if !(defined(__WXMSW__) || defined(__WXOSX__))
2646 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2647 {
2648     return GetCairoRenderer();
2649 }
2650 #endif // !(__WXMSW__ || __WXOSX__)
2651
2652 #endif // wxUSE_GRAPHICS_CONTEXT