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 // Common base class for pens and brushes.
 220 class wxCairoPenBrushBaseData : public wxGraphicsObjectRefData
 221 {
 222 public:
 223     wxCairoPenBrushBaseData(wxGraphicsRenderer* renderer,
 224                             const wxColour& col,
 225                             bool isTransparent);
 226     virtual ~wxCairoPenBrushBaseData();
 227
 228     virtual void Apply( wxGraphicsContext* context );
 229
 230 protected:
 231     // Call this to use the given bitmap as stipple. Bitmap must be non-null
 232     // and valid.
 233     void InitStipple(wxBitmap* bmp);
 234
 235     // Call this to use the given hatch style. Hatch style must be valid.
 236     void InitHatch(wxHatchStyle hatchStyle);
 237
 238
 239     double m_red;
 240     double m_green;
 241     double m_blue;
 242     double m_alpha;
 243
 244     cairo_pattern_t* m_pattern;
 245     class wxCairoBitmapData* m_bmpdata;
 246
 247 private:
 248     // Called once to allocate m_pattern if needed.
 249     void InitHatchPattern(cairo_t* ctext);
 250
 251     wxHatchStyle m_hatchStyle;
 252
 253     wxDECLARE_NO_COPY_CLASS(wxCairoPenBrushBaseData);
 254 };
 255
 256 class WXDLLIMPEXP_CORE wxCairoPenData : public wxCairoPenBrushBaseData
 257 {
 258 public:
 259     wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 260     ~wxCairoPenData();
 261
 262     void Init();
 263
 264     virtual void Apply( wxGraphicsContext* context );
 265     virtual wxDouble GetWidth() { return m_width; }
 266
 267 private :
 268     double m_width;
 269
 270     cairo_line_cap_t m_cap;
 271     cairo_line_join_t m_join;
 272
 273     int m_count;
 274     const double *m_lengths;
 275     double *m_userLengths;
 276
 277     wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
 278 };
 279
 280 class WXDLLIMPEXP_CORE wxCairoBrushData : public wxCairoPenBrushBaseData
 281 {
 282 public:
 283     wxCairoBrushData( wxGraphicsRenderer* renderer );
 284     wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 285
 286     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 287                                    wxDouble x2, wxDouble y2,
 288                                    const wxGraphicsGradientStops& stops);
 289     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 290                                    wxDouble xc, wxDouble yc, wxDouble radius,
 291                                    const wxGraphicsGradientStops& stops);
 292
 293 protected:
 294     virtual void Init();
 295
 296     // common part of Create{Linear,Radial}GradientBrush()
 297     void AddGradientStops(const wxGraphicsGradientStops& stops);
 298 };
 299
 300 class wxCairoFontData : public wxGraphicsObjectRefData
 301 {
 302 public:
 303     wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 304     wxCairoFontData(wxGraphicsRenderer* renderer,
 305                     double sizeInPixels,
 306                     const wxString& facename,
 307                     int flags,
 308                     const wxColour& col);
 309     ~wxCairoFontData();
 310
 311     virtual bool Apply( wxGraphicsContext* context );
 312 #ifdef __WXGTK__
 313     const wxFont& GetFont() const { return m_wxfont; }
 314 #endif
 315 private :
 316     void InitColour(const wxColour& col);
 317     void InitFontComponents(const wxString& facename,
 318                             cairo_font_slant_t slant,
 319                             cairo_font_weight_t weight);
 320
 321     double m_size;
 322     double m_red;
 323     double m_green;
 324     double m_blue;
 325     double m_alpha;
 326 #ifdef __WXMAC__
 327     cairo_font_face_t *m_font;
 328 #elif defined(__WXGTK__)
 329     wxFont m_wxfont;
 330 #endif
 331
 332     // These members are used when the font is created from its face name and
 333     // flags (and not from wxFont) and also even when creating it from wxFont
 334     // on the platforms not covered above.
 335     //
 336     // Notice that we can't use cairo_font_face_t instead of storing those,
 337     // even though it would be simpler and need less #ifdefs, because
 338     // cairo_toy_font_face_create() that we'd need to create it is only
 339     // available in Cairo 1.8 and we require just 1.2 currently. If we do drop
 340     // support for < 1.8 versions in the future it would be definitely better
 341     // to use cairo_toy_font_face_create() instead.
 342     wxCharBuffer m_fontName;
 343     cairo_font_slant_t m_slant;
 344     cairo_font_weight_t m_weight;
 345 };
 346
 347 class wxCairoBitmapData : public wxGraphicsBitmapData
 348 {
 349 public:
 350     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
 351 #if wxUSE_IMAGE
 352     wxCairoBitmapData(wxGraphicsRenderer* renderer, const wxImage& image);
 353 #endif // wxUSE_IMAGE
 354     wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
 355     ~wxCairoBitmapData();
 356
 357     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
 358     virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
 359     virtual void* GetNativeBitmap() const { return m_surface; }
 360     virtual wxSize GetSize() { return wxSize(m_width, m_height); }
 361
 362 #if wxUSE_IMAGE
 363     wxImage ConvertToImage() const;
 364 #endif // wxUSE_IMAGE
 365
 366 private :
 367     // Allocate m_buffer for the bitmap of the given size in the given format.
 368     //
 369     // Returns the stride used for the buffer.
 370     int InitBuffer(int width, int height, cairo_format_t format);
 371
 372     // Really create the surface using the buffer (which was supposed to be
 373     // filled since InitBuffer() call).
 374     void InitSurface(cairo_format_t format, int stride);
 375
 376
 377     cairo_surface_t* m_surface;
 378     cairo_pattern_t* m_pattern;
 379     int m_width;
 380     int m_height;
 381     unsigned char* m_buffer;
 382 };
 383
 384 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 385 {
 386 public:
 387     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 388     wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
 389     wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
 390 #ifdef __WXGTK__
 391     wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window );
 392 #endif
 393 #ifdef __WXMSW__
 394     wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
 395 #endif
 396     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 397     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 398
 399     // If this ctor is used, Init() must be called by the derived class later.
 400     wxCairoContext( wxGraphicsRenderer* renderer );
 401
 402     virtual ~wxCairoContext();
 403
 404     virtual bool ShouldOffset() const
 405     {
 406         if ( !m_enableOffset )
 407             return false;
 408
 409         int penwidth = 0 ;
 410         if ( !m_pen.IsNull() )
 411         {
 412             penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
 413             if ( penwidth == 0 )
 414                 penwidth = 1;
 415         }
 416         return ( penwidth % 2 ) == 1;
 417     }
 418
 419     virtual void Clip( const wxRegion &region );
 420 #ifdef __WXMSW__
 421     cairo_surface_t* m_mswSurface;
 422     WindowHDC m_mswWindowHDC;
 423 #endif
 424
 425     // clips drawings to the rect
 426     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 427
 428     // resets the clipping to original extent
 429     virtual void ResetClip();
 430
 431     virtual void * GetNativeContext();
 432
 433     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 434
 435     virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
 436
 437     virtual bool SetCompositionMode(wxCompositionMode op);
 438
 439     virtual void BeginLayer(wxDouble opacity);
 440
 441     virtual void EndLayer();
 442
 443     virtual void StrokePath( const wxGraphicsPath& p );
 444     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
 445
 446     virtual void Translate( wxDouble dx , wxDouble dy );
 447     virtual void Scale( wxDouble xScale , wxDouble yScale );
 448     virtual void Rotate( wxDouble angle );
 449
 450     // concatenates this transform with the current transform of this context
 451     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 452
 453     // sets the transform of this context
 454     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 455
 456     // gets the matrix of this context
 457     virtual wxGraphicsMatrix GetTransform() const;
 458
 459     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 460     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 461     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 462     virtual void PushState();
 463     virtual void PopState();
 464
 465     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 466                                 wxDouble *descent, wxDouble *externalLeading ) const;
 467     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 468
 469 protected:
 470     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
 471
 472     void Init(cairo_t *context);
 473
 474 private:
 475     cairo_t* m_context;
 476
 477     wxVector<float> m_layerOpacities;
 478
 479     wxDECLARE_NO_COPY_CLASS(wxCairoContext);
 480 };
 481
 482 #if wxUSE_IMAGE
 483 // ----------------------------------------------------------------------------
 484 // wxCairoImageContext: context associated with a wxImage.
 485 // ----------------------------------------------------------------------------
 486
 487 class wxCairoImageContext : public wxCairoContext
 488 {
 489 public:
 490     wxCairoImageContext(wxGraphicsRenderer* renderer, wxImage& image) :
 491         wxCairoContext(renderer),
 492         m_image(image),
 493         m_data(renderer, image)
 494     {
 495         Init(cairo_create(m_data.GetCairoSurface()));
 496     }
 497
 498     virtual ~wxCairoImageContext()
 499     {
 500         m_image = m_data.ConvertToImage();
 501     }
 502
 503 private:
 504     wxImage& m_image;
 505     wxCairoBitmapData m_data;
 506
 507     wxDECLARE_NO_COPY_CLASS(wxCairoImageContext);
 508 };
 509 #endif // wxUSE_IMAGE
 510
 511 // ----------------------------------------------------------------------------
 512 // wxCairoPenBrushBaseData implementation
 513 //-----------------------------------------------------------------------------
 514
 515 wxCairoPenBrushBaseData::wxCairoPenBrushBaseData(wxGraphicsRenderer* renderer,
 516                                                  const wxColour& col,
 517                                                  bool isTransparent)
 518     : wxGraphicsObjectRefData(renderer)
 519 {
 520     m_hatchStyle = wxHATCHSTYLE_INVALID;
 521     m_pattern = NULL;
 522     m_bmpdata = NULL;
 523
 524     if ( isTransparent )
 525     {
 526         m_red =
 527         m_green =
 528         m_blue =
 529         m_alpha = 0;
 530     }
 531     else // non-transparent
 532     {
 533         m_red = col.Red()/255.0;
 534         m_green = col.Green()/255.0;
 535         m_blue = col.Blue()/255.0;
 536         m_alpha = col.Alpha()/255.0;
 537     }
 538 }
 539
 540 wxCairoPenBrushBaseData::~wxCairoPenBrushBaseData()
 541 {
 542     if (m_bmpdata)
 543     {
 544         // Deleting the bitmap data also deletes the pattern referenced by
 545         // m_pattern, so set it to NULL to avoid deleting it twice.
 546         delete m_bmpdata;
 547         m_pattern = NULL;
 548     }
 549     if (m_pattern)
 550         cairo_pattern_destroy(m_pattern);
 551 }
 552
 553 void wxCairoPenBrushBaseData::InitHatchPattern(cairo_t* ctext)
 554 {
 555     cairo_surface_t* const
 556         surface = cairo_surface_create_similar(
 557                     cairo_get_target(ctext), CAIRO_CONTENT_COLOR_ALPHA, 10, 10
 558                 );
 559
 560     cairo_t* const cr = cairo_create(surface);
 561     cairo_set_line_cap(cr, CAIRO_LINE_CAP_SQUARE);
 562     cairo_set_line_width(cr, 1);
 563     cairo_set_line_join(cr,CAIRO_LINE_JOIN_MITER);
 564
 565     switch ( m_hatchStyle )
 566     {
 567         case wxHATCHSTYLE_CROSS:
 568             cairo_move_to(cr, 5, 0);
 569             cairo_line_to(cr, 5, 10);
 570             cairo_move_to(cr, 0, 5);
 571             cairo_line_to(cr, 10, 5);
 572             break;
 573
 574         case wxHATCHSTYLE_BDIAGONAL:
 575             cairo_move_to(cr, 0, 10);
 576             cairo_line_to(cr, 10, 0);
 577             break;
 578
 579         case wxHATCHSTYLE_FDIAGONAL:
 580             cairo_move_to(cr, 0, 0);
 581             cairo_line_to(cr, 10, 10);
 582             break;
 583
 584         case wxHATCHSTYLE_CROSSDIAG:
 585             cairo_move_to(cr, 0, 0);
 586             cairo_line_to(cr, 10, 10);
 587             cairo_move_to(cr, 10, 0);
 588             cairo_line_to(cr, 0, 10);
 589             break;
 590
 591         case wxHATCHSTYLE_HORIZONTAL:
 592             cairo_move_to(cr, 0, 5);
 593             cairo_line_to(cr, 10, 5);
 594             break;
 595
 596         case wxHATCHSTYLE_VERTICAL:
 597             cairo_move_to(cr, 5, 0);
 598             cairo_line_to(cr, 5, 10);
 599             break;
 600
 601         default:
 602             wxFAIL_MSG(wxS("Invalid hatch pattern style."));
 603     }
 604
 605     cairo_set_source_rgba(cr, m_red, m_green, m_blue, m_alpha);
 606     cairo_stroke(cr);
 607
 608     cairo_destroy(cr);
 609
 610     m_pattern = cairo_pattern_create_for_surface(surface);
 611     cairo_surface_destroy(surface);
 612     cairo_pattern_set_extend(m_pattern, CAIRO_EXTEND_REPEAT);
 613 }
 614
 615 void wxCairoPenBrushBaseData::InitStipple(wxBitmap* bmp)
 616 {
 617     wxCHECK_RET( bmp && bmp->IsOk(), wxS("Invalid stippled bitmap") );
 618
 619     m_bmpdata = new wxCairoBitmapData(GetRenderer(), *bmp);
 620     m_pattern = m_bmpdata->GetCairoPattern();
 621     cairo_pattern_set_extend(m_pattern, CAIRO_EXTEND_REPEAT);
 622 }
 623
 624 void wxCairoPenBrushBaseData::InitHatch(wxHatchStyle hatchStyle)
 625 {
 626     // We can't create m_pattern right now as we don't have the Cairo context
 627     // needed for it, so just remember that we need to do it.
 628     m_hatchStyle = hatchStyle;
 629 }
 630
 631 void wxCairoPenBrushBaseData::Apply( wxGraphicsContext* context )
 632 {
 633     cairo_t* const ctext = (cairo_t*) context->GetNativeContext();
 634
 635     if ( m_hatchStyle != wxHATCHSTYLE_INVALID && !m_pattern )
 636         InitHatchPattern(ctext);
 637
 638     if ( m_pattern )
 639         cairo_set_source(ctext, m_pattern);
 640     else
 641         cairo_set_source_rgba(ctext, m_red, m_green, m_blue, m_alpha);
 642 }
 643
 644 //-----------------------------------------------------------------------------
 645 // wxCairoPenData implementation
 646 //-----------------------------------------------------------------------------
 647
 648 wxCairoPenData::~wxCairoPenData()
 649 {
 650     delete[] m_userLengths;
 651 }
 652
 653 void wxCairoPenData::Init()
 654 {
 655     m_lengths = NULL;
 656     m_userLengths = NULL;
 657     m_width = 0;
 658     m_count = 0;
 659 }
 660
 661 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 662     : wxCairoPenBrushBaseData(renderer, pen.GetColour(), pen.IsTransparent())
 663 {
 664     Init();
 665     m_width = pen.GetWidth();
 666     if (m_width <= 0.0)
 667         m_width = 0.1;
 668
 669     switch ( pen.GetCap() )
 670     {
 671     case wxCAP_ROUND :
 672         m_cap = CAIRO_LINE_CAP_ROUND;
 673         break;
 674
 675     case wxCAP_PROJECTING :
 676         m_cap = CAIRO_LINE_CAP_SQUARE;
 677         break;
 678
 679     case wxCAP_BUTT :
 680         m_cap = CAIRO_LINE_CAP_BUTT;
 681         break;
 682
 683     default :
 684         m_cap = CAIRO_LINE_CAP_BUTT;
 685         break;
 686     }
 687
 688     switch ( pen.GetJoin() )
 689     {
 690     case wxJOIN_BEVEL :
 691         m_join = CAIRO_LINE_JOIN_BEVEL;
 692         break;
 693
 694     case wxJOIN_MITER :
 695         m_join = CAIRO_LINE_JOIN_MITER;
 696         break;
 697
 698     case wxJOIN_ROUND :
 699         m_join = CAIRO_LINE_JOIN_ROUND;
 700         break;
 701
 702     default :
 703         m_join = CAIRO_LINE_JOIN_MITER;
 704         break;
 705     }
 706
 707     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 708     const double dotted[] =
 709     {
 710         dashUnit , dashUnit + 2.0
 711     };
 712     static const double short_dashed[] =
 713     {
 714         9.0 , 6.0
 715     };
 716     static const double dashed[] =
 717     {
 718         19.0 , 9.0
 719     };
 720     static const double dotted_dashed[] =
 721     {
 722         9.0 , 6.0 , 3.0 , 3.0
 723     };
 724
 725     switch ( pen.GetStyle() )
 726     {
 727     case wxPENSTYLE_SOLID :
 728         break;
 729
 730     case wxPENSTYLE_DOT :
 731         m_count = WXSIZEOF(dotted);
 732         m_userLengths = new double[ m_count ] ;
 733         memcpy( m_userLengths, dotted, sizeof(dotted) );
 734         m_lengths = m_userLengths;
 735         break;
 736
 737     case wxPENSTYLE_LONG_DASH :
 738         m_lengths = dashed ;
 739         m_count = WXSIZEOF(dashed);
 740         break;
 741
 742     case wxPENSTYLE_SHORT_DASH :
 743         m_lengths = short_dashed ;
 744         m_count = WXSIZEOF(short_dashed);
 745         break;
 746
 747     case wxPENSTYLE_DOT_DASH :
 748         m_lengths = dotted_dashed ;
 749         m_count = WXSIZEOF(dotted_dashed);
 750         break;
 751
 752     case wxPENSTYLE_USER_DASH :
 753         {
 754             wxDash *wxdashes ;
 755             m_count = pen.GetDashes( &wxdashes ) ;
 756             if ((wxdashes != NULL) && (m_count > 0))
 757             {
 758                 m_userLengths = new double[m_count] ;
 759                 for ( int i = 0 ; i < m_count ; ++i )
 760                 {
 761                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 762
 763                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 764                         m_userLengths[i] = dashUnit + 2.0 ;
 765                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 766                         m_userLengths[i] = dashUnit ;
 767                 }
 768             }
 769             m_lengths = m_userLengths ;
 770         }
 771         break;
 772
 773     case wxPENSTYLE_STIPPLE :
 774     case wxPENSTYLE_STIPPLE_MASK :
 775     case wxPENSTYLE_STIPPLE_MASK_OPAQUE :
 776         InitStipple(pen.GetStipple());
 777         break;
 778
 779     default :
 780         if ( pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
 781             && pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
 782         {
 783             InitHatch(static_cast<wxHatchStyle>(pen.GetStyle()));
 784         }
 785         break;
 786     }
 787 }
 788
 789 void wxCairoPenData::Apply( wxGraphicsContext* context )
 790 {
 791     wxCairoPenBrushBaseData::Apply(context);
 792
 793     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 794     cairo_set_line_width(ctext,m_width);
 795     cairo_set_line_cap(ctext,m_cap);
 796     cairo_set_line_join(ctext,m_join);
 797     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 798 }
 799
 800 //-----------------------------------------------------------------------------
 801 // wxCairoBrushData implementation
 802 //-----------------------------------------------------------------------------
 803
 804 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 805     : wxCairoPenBrushBaseData(renderer, wxColour(), true /* transparent */)
 806 {
 807     Init();
 808 }
 809
 810 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer,
 811                                     const wxBrush &brush )
 812     : wxCairoPenBrushBaseData(renderer, brush.GetColour(), brush.IsTransparent())
 813 {
 814     Init();
 815
 816     switch ( brush.GetStyle() )
 817     {
 818         case wxBRUSHSTYLE_STIPPLE:
 819         case wxBRUSHSTYLE_STIPPLE_MASK:
 820         case wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE:
 821             InitStipple(brush.GetStipple());
 822             break;
 823
 824         default:
 825             if ( brush.IsHatch() )
 826                 InitHatch(static_cast<wxHatchStyle>(brush.GetStyle()));
 827             break;
 828     }
 829 }
 830
 831 void wxCairoBrushData::AddGradientStops(const wxGraphicsGradientStops& stops)
 832 {
 833     // loop over all the stops, they include the beginning and ending ones
 834     const unsigned numStops = stops.GetCount();
 835     for ( unsigned n = 0; n < numStops; n++ )
 836     {
 837         const wxGraphicsGradientStop stop = stops.Item(n);
 838
 839         const wxColour col = stop.GetColour();
 840
 841         cairo_pattern_add_color_stop_rgba
 842         (
 843             m_pattern,
 844             stop.GetPosition(),
 845             col.Red()/255.0,
 846             col.Green()/255.0,
 847             col.Blue()/255.0,
 848             col.Alpha()/255.0
 849         );
 850     }
 851
 852     wxASSERT_MSG(cairo_pattern_status(m_pattern) == CAIRO_STATUS_SUCCESS,
 853                  wxT("Couldn't create cairo pattern"));
 854 }
 855
 856 void
 857 wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 858                                             wxDouble x2, wxDouble y2,
 859                                             const wxGraphicsGradientStops& stops)
 860 {
 861     m_pattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 862
 863     AddGradientStops(stops);
 864 }
 865
 866 void
 867 wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 868                                             wxDouble xc, wxDouble yc,
 869                                             wxDouble radius,
 870                                             const wxGraphicsGradientStops& stops)
 871 {
 872     m_pattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 873
 874     AddGradientStops(stops);
 875 }
 876
 877 void wxCairoBrushData::Init()
 878 {
 879     m_pattern = NULL;
 880     m_bmpdata = NULL;
 881 }
 882
 883 //-----------------------------------------------------------------------------
 884 // wxCairoFontData implementation
 885 //-----------------------------------------------------------------------------
 886
 887 void wxCairoFontData::InitColour(const wxColour& col)
 888 {
 889     m_red = col.Red()/255.0;
 890     m_green = col.Green()/255.0;
 891     m_blue = col.Blue()/255.0;
 892     m_alpha = col.Alpha()/255.0;
 893 }
 894
 895 void
 896 wxCairoFontData::InitFontComponents(const wxString& facename,
 897                                     cairo_font_slant_t slant,
 898                                     cairo_font_weight_t weight)
 899 {
 900     m_fontName = facename.mb_str(wxConvUTF8);
 901     m_slant = slant;
 902     m_weight = weight;
 903 }
 904
 905 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 906                          const wxColour& col )
 907     : wxGraphicsObjectRefData(renderer)
 908 #ifdef __WXGTK__
 909     , m_wxfont(font)
 910 #endif
 911 {
 912     InitColour(col);
 913
 914     m_size = font.GetPointSize();
 915
 916 #ifdef __WXMAC__
 917     m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
 918 #elif defined(__WXGTK__)
 919 #else
 920     InitFontComponents
 921     (
 922         font.GetFaceName(),
 923         font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC
 924                                               : CAIRO_FONT_SLANT_NORMAL,
 925         font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD
 926                                               : CAIRO_FONT_WEIGHT_NORMAL
 927     );
 928 #endif
 929 }
 930
 931 wxCairoFontData::wxCairoFontData(wxGraphicsRenderer* renderer,
 932                                  double sizeInPixels,
 933                                  const wxString& facename,
 934                                  int flags,
 935                                  const wxColour& col) :
 936     wxGraphicsObjectRefData(renderer)
 937 {
 938     InitColour(col);
 939
 940     // Resolution for Cairo image surfaces is 72 DPI meaning that the sizes in
 941     // points and pixels are identical, so we can just pass the size in pixels
 942     // directly to cairo_set_font_size().
 943     m_size = sizeInPixels;
 944
 945 #if defined(__WXMAC__)
 946     m_font = NULL;
 947 #endif
 948
 949     // There is no need to set m_underlined under wxGTK in this case, it can
 950     // only be used if m_font != NULL.
 951
 952     InitFontComponents
 953     (
 954         facename,
 955         flags & wxFONTFLAG_ITALIC ? CAIRO_FONT_SLANT_ITALIC
 956                                   : CAIRO_FONT_SLANT_NORMAL,
 957         flags & wxFONTFLAG_BOLD ? CAIRO_FONT_WEIGHT_BOLD
 958                                 : CAIRO_FONT_WEIGHT_NORMAL
 959     );
 960 }
 961
 962 wxCairoFontData::~wxCairoFontData()
 963 {
 964 #ifdef __WXMAC__
 965     if ( m_font )
 966         cairo_font_face_destroy( m_font );
 967 #endif
 968 }
 969
 970 bool wxCairoFontData::Apply( wxGraphicsContext* context )
 971 {
 972     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 973     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 974 #ifdef __WXGTK__
 975     if (m_wxfont.IsOk())
 976     {
 977         // Nothing to do, the caller uses Pango layout functions to do
 978         // everything.
 979         return true;
 980     }
 981 #elif defined(__WXMAC__)
 982     if ( m_font )
 983     {
 984         cairo_set_font_face(ctext, m_font);
 985         cairo_set_font_size(ctext, m_size );
 986         return true;
 987     }
 988 #endif
 989
 990     // If we get here, we must be on a platform without native font support or
 991     // we're using toy Cairo API even under wxGTK/wxMac.
 992     cairo_select_font_face(ctext, m_fontName, m_slant, m_weight );
 993     cairo_set_font_size(ctext, m_size );
 994
 995     // Indicate that we don't use native fonts for the platforms which care
 996     // about this (currently only wxGTK).
 997     return false;
 998 }
 999
1000 //-----------------------------------------------------------------------------
1001 // wxCairoPathData implementation
1002 //-----------------------------------------------------------------------------
1003
1004 wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
1005     : wxGraphicsPathData(renderer)
1006 {
1007     if (pathcontext)
1008     {
1009         m_pathContext = pathcontext;
1010     }
1011     else
1012     {
1013         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
1014         m_pathContext = cairo_create(surface);
1015         cairo_surface_destroy (surface);
1016     }
1017 }
1018
1019 wxCairoPathData::~wxCairoPathData()
1020 {
1021     cairo_destroy(m_pathContext);
1022 }
1023
1024 wxGraphicsObjectRefData *wxCairoPathData::Clone() const
1025 {
1026     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
1027     cairo_t* pathcontext = cairo_create(surface);
1028     cairo_surface_destroy (surface);
1029
1030     cairo_path_t* path = cairo_copy_path(m_pathContext);
1031     cairo_append_path(pathcontext, path);
1032     cairo_path_destroy(path);
1033     return new wxCairoPathData( GetRenderer() ,pathcontext);
1034 }
1035
1036
1037 void* wxCairoPathData::GetNativePath() const
1038 {
1039     return cairo_copy_path(m_pathContext) ;
1040 }
1041
1042 void wxCairoPathData::UnGetNativePath(void *p) const
1043 {
1044     cairo_path_destroy((cairo_path_t*)p);
1045 }
1046
1047 //
1048 // The Primitives
1049 //
1050
1051 void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
1052 {
1053     cairo_move_to(m_pathContext,x,y);
1054 }
1055
1056 void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
1057 {
1058     cairo_line_to(m_pathContext,x,y);
1059 }
1060
1061 void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
1062 {
1063     cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
1064     cairo_append_path(m_pathContext, p);
1065     UnGetNativePath(p);
1066 }
1067
1068 void wxCairoPathData::CloseSubpath()
1069 {
1070     cairo_close_path(m_pathContext);
1071 }
1072
1073 void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1074 {
1075     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
1076 }
1077
1078 // gets the last point of the current path, (0,0) if not yet set
1079 void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1080 {
1081     double dx,dy;
1082     cairo_get_current_point(m_pathContext,&dx,&dy);
1083     if (x)
1084         *x = dx;
1085     if (y)
1086         *y = dy;
1087 }
1088
1089 void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
1090 {
1091     // as clockwise means positive in our system (y pointing downwards)
1092     // TODO make this interpretation dependent of the
1093     // real device trans
1094     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
1095         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
1096     else
1097         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
1098 }
1099
1100 // transforms each point of this path by the matrix
1101 void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
1102 {
1103     // as we don't have a true path object, we have to apply the inverse
1104     // matrix to the context
1105     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
1106     cairo_matrix_invert( &m );
1107     cairo_transform(m_pathContext,&m);
1108 }
1109
1110 // gets the bounding box enclosing all points (possibly including control points)
1111 void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1112 {
1113     double x1,y1,x2,y2;
1114
1115     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
1116     if ( x2 < x1 )
1117     {
1118         *x = x2;
1119         *w = x1-x2;
1120     }
1121     else
1122     {
1123         *x = x1;
1124         *w = x2-x1;
1125     }
1126
1127     if( y2 < y1 )
1128     {
1129         *y = y2;
1130         *h = y1-y2;
1131     }
1132     else
1133     {
1134         *y = y1;
1135         *h = y2-y1;
1136     }
1137 }
1138
1139 bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
1140 {
1141     cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1142     return cairo_in_fill( m_pathContext, x, y) != 0;
1143 }
1144
1145 //-----------------------------------------------------------------------------
1146 // wxCairoMatrixData implementation
1147 //-----------------------------------------------------------------------------
1148
1149 wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
1150     : wxGraphicsMatrixData(renderer)
1151 {
1152     if ( matrix )
1153         m_matrix = *matrix;
1154 }
1155
1156 wxCairoMatrixData::~wxCairoMatrixData()
1157 {
1158     // nothing to do
1159 }
1160
1161 wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
1162 {
1163     return new wxCairoMatrixData(GetRenderer(),&m_matrix);
1164 }
1165
1166 // concatenates the matrix
1167 void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
1168 {
1169     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
1170 }
1171
1172 // sets the matrix to the respective values
1173 void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1174                         wxDouble tx, wxDouble ty)
1175 {
1176     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
1177 }
1178
1179 // gets the component valuess of the matrix
1180 void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
1181                             wxDouble* d, wxDouble* tx, wxDouble* ty) const
1182 {
1183     if (a)  *a = m_matrix.xx;
1184     if (b)  *b = m_matrix.yx;
1185     if (c)  *c = m_matrix.xy;
1186     if (d)  *d = m_matrix.yy;
1187     if (tx) *tx= m_matrix.x0;
1188     if (ty) *ty= m_matrix.y0;
1189 }
1190
1191 // makes this the inverse matrix
1192 void wxCairoMatrixData::Invert()
1193 {
1194     cairo_matrix_invert( &m_matrix );
1195 }
1196
1197 // returns true if the elements of the transformation matrix are equal ?
1198 bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1199 {
1200     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
1201     return (
1202         m_matrix.xx == tm->xx &&
1203         m_matrix.yx == tm->yx &&
1204         m_matrix.xy == tm->xy &&
1205         m_matrix.yy == tm->yy &&
1206         m_matrix.x0 == tm->x0 &&
1207         m_matrix.y0 == tm->y0 ) ;
1208 }
1209
1210 // return true if this is the identity matrix
1211 bool wxCairoMatrixData::IsIdentity() const
1212 {
1213     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
1214         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
1215 }
1216
1217 //
1218 // transformation
1219 //
1220
1221 // add the translation to this matrix
1222 void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
1223 {
1224     cairo_matrix_translate( &m_matrix, dx, dy) ;
1225 }
1226
1227 // add the scale to this matrix
1228 void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1229 {
1230     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
1231 }
1232
1233 // add the rotation to this matrix (radians)
1234 void wxCairoMatrixData::Rotate( wxDouble angle )
1235 {
1236     cairo_matrix_rotate( &m_matrix, angle) ;
1237 }
1238
1239 //
1240 // apply the transforms
1241 //
1242
1243 // applies that matrix to the point
1244 void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1245 {
1246     double lx = *x, ly = *y ;
1247     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
1248     *x = lx;
1249     *y = ly;
1250 }
1251
1252 // applies the matrix except for translations
1253 void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1254 {
1255     double lx = *dx, ly = *dy ;
1256     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
1257     *dx = lx;
1258     *dy = ly;
1259 }
1260
1261 // returns the native representation
1262 void * wxCairoMatrixData::GetNativeMatrix() const
1263 {
1264     return (void*) &m_matrix;
1265 }
1266
1267 // ----------------------------------------------------------------------------
1268 // wxCairoBitmap implementation
1269 // ----------------------------------------------------------------------------
1270
1271 int wxCairoBitmapData::InitBuffer(int width, int height, cairo_format_t format)
1272 {
1273     wxUnusedVar(format); // Only really unused with Cairo < 1.6.
1274
1275     // Determine the stride: use cairo_format_stride_for_width() if available
1276     // but fall back to 4*width for the earlier versions as this is what that
1277     // function always returns, even in latest Cairo, anyhow.
1278     int stride;
1279 #if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 6, 0)
1280     if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 6, 0) )
1281     {
1282         stride = cairo_format_stride_for_width(format, width);
1283
1284         // All our code would totally break if stride were not a multiple of 4
1285         // so ensure this is the case.
1286         if ( stride % 4 )
1287         {
1288             wxFAIL_MSG("Unexpected Cairo image surface stride.");
1289
1290             stride += 4 - stride % 4;
1291         }
1292     }
1293     else
1294 #endif
1295         stride = 4*width;
1296
1297     m_width = width;
1298     m_height = height;
1299     m_buffer = new unsigned char[height*stride];
1300
1301     return stride;
1302 }
1303
1304 void wxCairoBitmapData::InitSurface(cairo_format_t format, int stride)
1305 {
1306     m_surface = cairo_image_surface_create_for_data(
1307                             m_buffer, format, m_width, m_height, stride);
1308     m_pattern = cairo_pattern_create_for_surface(m_surface);
1309 }
1310
1311 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
1312     wxGraphicsBitmapData( renderer )
1313 {
1314     m_surface = bitmap;
1315     m_pattern = cairo_pattern_create_for_surface(m_surface);
1316 }
1317
1318 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsBitmapData( renderer )
1319 {
1320     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
1321
1322 #ifdef wxHAS_RAW_BITMAP
1323     // Create a surface object and copy the bitmap pixel data to it.  if the
1324     // image has alpha (or a mask represented as alpha) then we'll use a
1325     // different format and iterator than if it doesn't...
1326     cairo_format_t bufferFormat = bmp.GetDepth() == 32
1327 #if defined(__WXGTK__) && !defined(__WXGTK3__)
1328                                             || bmp.GetMask()
1329 #endif
1330                                         ? CAIRO_FORMAT_ARGB32
1331                                         : CAIRO_FORMAT_RGB24;
1332
1333     int stride = InitBuffer(bmp.GetWidth(), bmp.GetHeight(), bufferFormat);
1334
1335     wxBitmap bmpSource = bmp;  // we need a non-const instance
1336     wxUint32* data = (wxUint32*)m_buffer;
1337
1338     if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
1339     {
1340         // use the bitmap's alpha
1341         wxAlphaPixelData
1342             pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
1343         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1344
1345         wxAlphaPixelData::Iterator p(pixData);
1346         for (int y=0; y<m_height; y++)
1347         {
1348             wxAlphaPixelData::Iterator rowStart = p;
1349             wxUint32* const rowStartDst = data;
1350             for (int x=0; x<m_width; x++)
1351             {
1352                 // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
1353                 // with alpha in the upper 8 bits, then red, then green, then
1354                 // blue. The 32-bit quantities are stored native-endian.
1355                 // Pre-multiplied alpha is used.
1356                 unsigned char alpha = p.Alpha();
1357                 if (alpha == 0)
1358                     *data = 0;
1359                 else
1360                     *data = ( alpha                      << 24
1361                               | (p.Red() * alpha/255)    << 16
1362                               | (p.Green() * alpha/255)  <<  8
1363                               | (p.Blue() * alpha/255) );
1364                 ++data;
1365                 ++p;
1366             }
1367
1368             data = rowStartDst + stride / 4;
1369             p = rowStart;
1370             p.OffsetY(pixData, 1);
1371         }
1372     }
1373     else  // no alpha
1374     {
1375         wxNativePixelData
1376             pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
1377         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1378
1379         wxNativePixelData::Iterator p(pixData);
1380         for (int y=0; y<m_height; y++)
1381         {
1382             wxNativePixelData::Iterator rowStart = p;
1383             wxUint32* const rowStartDst = data;
1384             for (int x=0; x<m_width; x++)
1385             {
1386                 // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
1387                 // the upper 8 bits unused. Red, Green, and Blue are stored in
1388                 // the remaining 24 bits in that order.  The 32-bit quantities
1389                 // are stored native-endian.
1390                 *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
1391                 ++data;
1392                 ++p;
1393             }
1394
1395             data = rowStartDst + stride / 4;
1396             p = rowStart;
1397             p.OffsetY(pixData, 1);
1398         }
1399     }
1400 #if defined(__WXMSW__) || defined(__WXGTK3__)
1401     // if there is a mask, set the alpha bytes in the target buffer to
1402     // fully transparent or fully opaque
1403     if (bmpSource.GetMask())
1404     {
1405         wxBitmap bmpMask = bmpSource.GetMaskBitmap();
1406         bufferFormat = CAIRO_FORMAT_ARGB32;
1407         data = (wxUint32*)m_buffer;
1408         wxNativePixelData
1409             pixData(bmpMask, wxPoint(0, 0), wxSize(m_width, m_height));
1410         wxCHECK_RET( pixData, wxT("Failed to gain raw access to mask data."));
1411
1412         wxNativePixelData::Iterator p(pixData);
1413         for (int y=0; y<m_height; y++)
1414         {
1415             wxNativePixelData::Iterator rowStart = p;
1416             wxUint32* const rowStartDst = data;
1417             for (int x=0; x<m_width; x++)
1418             {
1419                 if (p.Red()+p.Green()+p.Blue() == 0)
1420                     *data = 0;
1421                 else
1422                     *data = (wxALPHA_OPAQUE << 24) | (*data & 0x00FFFFFF);
1423                 ++data;
1424                 ++p;
1425             }
1426
1427             data = rowStartDst + stride / 4;
1428             p = rowStart;
1429             p.OffsetY(pixData, 1);
1430         }
1431     }
1432 #endif
1433
1434     InitSurface(bufferFormat, stride);
1435 #endif // wxHAS_RAW_BITMAP
1436 }
1437
1438 #if wxUSE_IMAGE
1439
1440 // Helper functions for dealing with alpha pre-multiplication.
1441 namespace
1442 {
1443
1444 inline unsigned char Premultiply(unsigned char alpha, unsigned char data)
1445 {
1446     return alpha ? (data * alpha)/0xff : data;
1447 }
1448
1449 inline unsigned char Unpremultiply(unsigned char alpha, unsigned char data)
1450 {
1451     return alpha ? (data * 0xff)/alpha : data;
1452 }
1453
1454 } // anonymous namespace
1455
1456 wxCairoBitmapData::wxCairoBitmapData(wxGraphicsRenderer* renderer,
1457                                      const wxImage& image)
1458     : wxGraphicsBitmapData(renderer)
1459 {
1460     const cairo_format_t bufferFormat = image.HasAlpha()
1461                                             ? CAIRO_FORMAT_ARGB32
1462                                             : CAIRO_FORMAT_RGB24;
1463
1464     int stride = InitBuffer(image.GetWidth(), image.GetHeight(), bufferFormat);
1465
1466     // Copy wxImage data into the buffer. Notice that we work with wxUint32
1467     // values and not bytes becase Cairo always works with buffers in native
1468     // endianness.
1469     wxUint32* dst = reinterpret_cast<wxUint32*>(m_buffer);
1470     const unsigned char* src = image.GetData();
1471
1472     if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
1473     {
1474         const unsigned char* alpha = image.GetAlpha();
1475
1476         for ( int y = 0; y < m_height; y++ )
1477         {
1478             wxUint32* const rowStartDst = dst;
1479
1480             for ( int x = 0; x < m_width; x++ )
1481             {
1482                 const unsigned char a = *alpha++;
1483
1484                 *dst++ = a                      << 24 |
1485                          Premultiply(a, src[0]) << 16 |
1486                          Premultiply(a, src[1]) <<  8 |
1487                          Premultiply(a, src[2]);
1488                 src += 3;
1489             }
1490
1491             dst = rowStartDst + stride / 4;
1492         }
1493     }
1494     else // RGB
1495     {
1496         for ( int y = 0; y < m_height; y++ )
1497         {
1498             wxUint32* const rowStartDst = dst;
1499
1500             for ( int x = 0; x < m_width; x++ )
1501             {
1502                 *dst++ = src[0] << 16 |
1503                          src[1] <<  8 |
1504                          src[2];
1505                 src += 3;
1506             }
1507
1508             dst = rowStartDst + stride / 4;
1509         }
1510     }
1511
1512     InitSurface(bufferFormat, stride);
1513 }
1514
1515 wxImage wxCairoBitmapData::ConvertToImage() const
1516 {
1517     wxImage image(m_width, m_height, false /* don't clear */);
1518
1519     // Get the surface type and format.
1520     wxCHECK_MSG( cairo_surface_get_type(m_surface) == CAIRO_SURFACE_TYPE_IMAGE,
1521                  wxNullImage,
1522                  wxS("Can't convert non-image surface to image.") );
1523
1524     switch ( cairo_image_surface_get_format(m_surface) )
1525     {
1526         case CAIRO_FORMAT_ARGB32:
1527             image.SetAlpha();
1528             break;
1529
1530         case CAIRO_FORMAT_RGB24:
1531             // Nothing to do, we don't use alpha by default.
1532             break;
1533
1534         case CAIRO_FORMAT_A8:
1535         case CAIRO_FORMAT_A1:
1536             wxFAIL_MSG(wxS("Unsupported Cairo image surface type."));
1537             return wxNullImage;
1538
1539         default:
1540             wxFAIL_MSG(wxS("Unknown Cairo image surface type."));
1541             return wxNullImage;
1542     }
1543
1544     // Prepare for copying data.
1545     const wxUint32* src = (wxUint32*)cairo_image_surface_get_data(m_surface);
1546     wxCHECK_MSG( src, wxNullImage, wxS("Failed to get Cairo surface data.") );
1547
1548     int stride = cairo_image_surface_get_stride(m_surface);
1549     wxCHECK_MSG( stride > 0, wxNullImage,
1550                  wxS("Failed to get Cairo surface stride.") );
1551
1552     // As we work with wxUint32 pointers and not char ones, we need to adjust
1553     // the stride accordingly. This should be lossless as the stride must be a
1554     // multiple of pixel size.
1555     wxASSERT_MSG( !(stride % sizeof(wxUint32)), wxS("Unexpected stride.") );
1556     stride /= sizeof(wxUint32);
1557
1558     unsigned char* dst = image.GetData();
1559     unsigned char *alpha = image.GetAlpha();
1560     if ( alpha )
1561     {
1562         // We need to also copy alpha and undo the pre-multiplication as Cairo
1563         // stores pre-multiplied values in this format while wxImage does not.
1564         for ( int y = 0; y < m_height; y++ )
1565         {
1566             const wxUint32* const rowStart = src;
1567             for ( int x = 0; x < m_width; x++ )
1568             {
1569                 const wxUint32 argb = *src++;
1570
1571                 *alpha++ = (argb & 0xff000000) >> 24;
1572
1573                 // Copy the RGB data undoing the pre-multiplication.
1574                 *dst++ = Unpremultiply(*alpha, (argb & 0x00ff0000) >> 16);
1575                 *dst++ = Unpremultiply(*alpha, (argb & 0x0000ff00) >>  8);
1576                 *dst++ = Unpremultiply(*alpha, (argb & 0x000000ff));
1577             }
1578
1579             src = rowStart + stride;
1580         }
1581     }
1582     else // RGB
1583     {
1584         // Things are pretty simple in this case, just copy RGB bytes.
1585         for ( int y = 0; y < m_height; y++ )
1586         {
1587             const wxUint32* const rowStart = src;
1588             for ( int x = 0; x < m_width; x++ )
1589             {
1590                 const wxUint32 argb = *src++;
1591
1592                 *dst++ = (argb & 0x00ff0000) >> 16;
1593                 *dst++ = (argb & 0x0000ff00) >>  8;
1594                 *dst++ = (argb & 0x000000ff);
1595             }
1596
1597             src = rowStart + stride;
1598         }
1599     }
1600
1601     return image;
1602 }
1603
1604 #endif // wxUSE_IMAGE
1605
1606 wxCairoBitmapData::~wxCairoBitmapData()
1607 {
1608     if (m_pattern)
1609         cairo_pattern_destroy(m_pattern);
1610
1611     if (m_surface)
1612         cairo_surface_destroy(m_surface);
1613
1614     delete [] m_buffer;
1615 }
1616
1617 //-----------------------------------------------------------------------------
1618 // wxCairoContext implementation
1619 //-----------------------------------------------------------------------------
1620
1621 class wxCairoOffsetHelper
1622 {
1623 public :
1624     wxCairoOffsetHelper( cairo_t* ctx , bool offset )
1625     {
1626         m_ctx = ctx;
1627         m_offset = offset;
1628         if ( m_offset )
1629              cairo_translate( m_ctx, 0.5, 0.5 );
1630     }
1631     ~wxCairoOffsetHelper( )
1632     {
1633         if ( m_offset )
1634             cairo_translate( m_ctx, -0.5, -0.5 );
1635     }
1636 public :
1637     cairo_t* m_ctx;
1638     bool m_offset;
1639 } ;
1640
1641 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
1642 : wxGraphicsContext(renderer)
1643 {
1644 #ifdef __WXMSW__
1645     // wxMSW contexts always use MM_ANISOTROPIC, which messes up
1646     // text rendering when printing using Cairo. Switch it to MM_TEXT
1647     // map mode to avoid this problem.
1648     HDC hdc = (HDC)dc.GetHDC();
1649     ::SetMapMode(hdc, MM_TEXT);
1650     m_mswSurface = cairo_win32_printing_surface_create(hdc);
1651     Init( cairo_create(m_mswSurface) );
1652 #endif
1653
1654 #ifdef __WXGTK20__
1655     const wxDCImpl *impl = dc.GetImpl();
1656     Init( (cairo_t*) impl->GetCairoContext() );
1657 #endif
1658     wxSize sz = dc.GetSize();
1659     m_width = sz.x;
1660     m_height = sz.y;
1661
1662     wxPoint org = dc.GetDeviceOrigin();
1663     cairo_translate( m_context, org.x, org.y );
1664
1665     double sx,sy;
1666     dc.GetUserScale( &sx, &sy );
1667
1668 // TODO: Determine if these fixes are needed on other platforms too.
1669 // On MSW, without this the printer context will not respect wxDC SetMapMode calls.
1670 // For example, using dc.SetMapMode(wxMM_POINTS) can let us share printer and screen
1671 // drawing code
1672 #ifdef __WXMSW__
1673     double lsx,lsy;
1674     dc.GetLogicalScale( &lsx, &lsy );
1675     sx *= lsx;
1676     sy *= lsy;
1677 #endif
1678     cairo_scale( m_context, sx, sy );
1679
1680     org = dc.GetLogicalOrigin();
1681     cairo_translate( m_context, -org.x, -org.y );
1682 }
1683
1684 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
1685 : wxGraphicsContext(renderer)
1686 {
1687     int width, height;
1688     dc.GetSize( &width, &height );
1689     m_width = width;
1690     m_height = height;
1691
1692     m_enableOffset = true;
1693
1694 #ifdef __WXMSW__
1695     m_mswSurface = cairo_win32_surface_create((HDC)dc.GetHDC());
1696     Init( cairo_create(m_mswSurface) );
1697 #endif
1698
1699 #ifdef __WXGTK3__
1700     cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
1701     if (cr)
1702         Init(cr);
1703 #elif defined __WXGTK20__
1704     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1705     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1706
1707 #if 0
1708     wxGraphicsMatrix matrix = CreateMatrix();
1709
1710     wxPoint org = dc.GetDeviceOrigin();
1711     matrix.Translate( org.x, org.y );
1712
1713     org = dc.GetLogicalOrigin();
1714     matrix.Translate( -org.x, -org.y );
1715
1716     double sx,sy;
1717     dc.GetUserScale( &sx, &sy );
1718     matrix.Scale( sx, sy );
1719
1720     ConcatTransform( matrix );
1721 #endif
1722 #endif
1723
1724 #ifdef __WXMAC__
1725     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1726     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1727     Init( cairo_create( surface ) );
1728     cairo_surface_destroy( surface );
1729 #endif
1730 }
1731
1732 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
1733 : wxGraphicsContext(renderer)
1734 {
1735     int width, height;
1736     dc.GetSize( &width, &height );
1737     m_width = width;
1738     m_height = height;
1739
1740     m_enableOffset = true;
1741
1742 #ifdef __WXMSW__
1743
1744     HDC hdc = (HDC)dc.GetHDC();
1745
1746     HBITMAP bitmap = (HBITMAP)GetCurrentObject(hdc, OBJ_BITMAP);
1747
1748     BITMAP info;
1749     bool hasBitmap = false;
1750
1751     // cairo_win32_surface_create creates a 24-bit bitmap,
1752     // so if we have alpha, we need to create a 32-bit surface instead.
1753     if (!GetObject(bitmap, sizeof(info), &info) || info.bmBitsPixel < 32)
1754         m_mswSurface = cairo_win32_surface_create(hdc);
1755     else {
1756         hasBitmap = true;
1757         m_mswSurface = cairo_image_surface_create_for_data((unsigned char*)info.bmBits,
1758                                                CAIRO_FORMAT_ARGB32,
1759                                                info.bmWidth,
1760                                                info.bmHeight,
1761                                                info.bmWidthBytes);
1762     }
1763
1764     Init( cairo_create(m_mswSurface) );
1765     // If we've created a image surface, we need to flip the Y axis so that
1766     // all drawing will appear right side up.
1767     if (hasBitmap) {
1768         cairo_matrix_t matrix;
1769         cairo_matrix_init(&matrix, 1.0, 0.0, 0.0, -1.0, 0.0, height);
1770         cairo_set_matrix(m_context, &matrix);
1771     }
1772 #endif
1773
1774 #ifdef __WXGTK3__
1775     cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
1776     if (cr)
1777         Init(cr);
1778 #elif defined __WXGTK20__
1779     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1780     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1781
1782 #if 0
1783     wxGraphicsMatrix matrix = CreateMatrix();
1784
1785     wxPoint org = dc.GetDeviceOrigin();
1786     matrix.Translate( org.x, org.y );
1787
1788     org = dc.GetLogicalOrigin();
1789     matrix.Translate( -org.x, -org.y );
1790
1791     double sx,sy;
1792     dc.GetUserScale( &sx, &sy );
1793     matrix.Scale( sx, sy );
1794
1795     ConcatTransform( matrix );
1796 #endif
1797 #endif
1798
1799 #ifdef __WXMAC__
1800     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1801     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1802     Init( cairo_create( surface ) );
1803     cairo_surface_destroy( surface );
1804 #endif
1805 }
1806
1807 #ifdef __WXGTK20__
1808 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window )
1809 : wxGraphicsContext(renderer)
1810 {
1811     Init( gdk_cairo_create( window ) );
1812
1813 #ifdef __WXGTK3__
1814     m_width = gdk_window_get_width(window);
1815     m_height = gdk_window_get_height(window);
1816 #else
1817     int width, height;
1818     gdk_drawable_get_size(window, &width, &height);
1819     m_width = width;
1820     m_height = height;
1821 #endif
1822 }
1823 #endif
1824
1825 #ifdef __WXMSW__
1826 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
1827 : wxGraphicsContext(renderer)
1828 {
1829     m_mswSurface = cairo_win32_surface_create(handle);
1830     Init( cairo_create(m_mswSurface) );
1831     m_width =
1832     m_height = 0;
1833 }
1834 #endif
1835
1836
1837 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1838 : wxGraphicsContext(renderer)
1839 {
1840     Init( context );
1841     m_width =
1842     m_height = 0;
1843 }
1844
1845 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1846     : wxGraphicsContext(renderer)
1847 #ifdef __WXMSW__
1848     , m_mswWindowHDC(GetHwndOf(window))
1849 #endif
1850 {
1851     m_enableOffset = true;
1852 #ifdef __WXGTK__
1853     // something along these lines (copied from dcclient)
1854
1855     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1856     // code should still be able to create wxClientDCs for them, so we will
1857     // use the parent window here then.
1858     if (window->m_wxwindow == NULL)
1859     {
1860         window = window->GetParent();
1861     }
1862
1863     wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
1864
1865     Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
1866
1867     wxSize sz = window->GetSize();
1868     m_width = sz.x;
1869     m_height = sz.y;
1870 #endif
1871
1872 #ifdef __WXMSW__
1873     m_mswSurface = cairo_win32_surface_create((HDC)m_mswWindowHDC);
1874     Init(cairo_create(m_mswSurface));
1875 #endif
1876
1877 }
1878
1879 wxCairoContext::wxCairoContext(wxGraphicsRenderer* renderer) :
1880     wxGraphicsContext(renderer)
1881 {
1882     m_context = NULL;
1883 }
1884
1885 wxCairoContext::~wxCairoContext()
1886 {
1887     if ( m_context )
1888     {
1889         PopState();
1890         PopState();
1891         cairo_destroy(m_context);
1892     }
1893 #ifdef __WXMSW__
1894     if ( m_mswSurface )
1895         cairo_surface_destroy(m_mswSurface);
1896 #endif
1897 }
1898
1899 void wxCairoContext::Init(cairo_t *context)
1900 {
1901     m_context = context ;
1902     PushState();
1903     PushState();
1904 }
1905
1906
1907 void wxCairoContext::Clip( const wxRegion& region )
1908 {
1909     // Create a path with all the rectangles in the region
1910     wxGraphicsPath path = GetRenderer()->CreatePath();
1911     wxRegionIterator ri(region);
1912     while (ri)
1913     {
1914         path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
1915         ++ri;
1916     }
1917
1918     // Put it in the context
1919     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1920     cairo_append_path(m_context, cp);
1921
1922     // clip to that path
1923     cairo_clip(m_context);
1924     path.UnGetNativePath(cp);
1925 }
1926
1927 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1928 {
1929     // Create a path with this rectangle
1930     wxGraphicsPath path = GetRenderer()->CreatePath();
1931     path.AddRectangle(x,y,w,h);
1932
1933     // Put it in the context
1934     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1935     cairo_append_path(m_context, cp);
1936
1937     // clip to that path
1938     cairo_clip(m_context);
1939     path.UnGetNativePath(cp);
1940 }
1941
1942 void wxCairoContext::ResetClip()
1943 {
1944     cairo_reset_clip(m_context);
1945 }
1946
1947
1948 void wxCairoContext::StrokePath( const wxGraphicsPath& path )
1949 {
1950     if ( !m_pen.IsNull() )
1951     {
1952         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1953         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1954         cairo_append_path(m_context,cp);
1955         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1956         cairo_stroke(m_context);
1957         path.UnGetNativePath(cp);
1958     }
1959 }
1960
1961 void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1962 {
1963     if ( !m_brush.IsNull() )
1964     {
1965         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1966         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1967         cairo_append_path(m_context,cp);
1968         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1969         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1970         cairo_fill(m_context);
1971         path.UnGetNativePath(cp);
1972     }
1973 }
1974
1975 void wxCairoContext::Rotate( wxDouble angle )
1976 {
1977     cairo_rotate(m_context,angle);
1978 }
1979
1980 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1981 {
1982     cairo_translate(m_context,dx,dy);
1983 }
1984
1985 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1986 {
1987     cairo_scale(m_context,xScale,yScale);
1988 }
1989
1990 // concatenates this transform with the current transform of this context
1991 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1992 {
1993     cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
1994 }
1995
1996 // sets the transform of this context
1997 void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
1998 {
1999     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
2000 }
2001
2002 // gets the matrix of this context
2003 wxGraphicsMatrix wxCairoContext::GetTransform() const
2004 {
2005     wxGraphicsMatrix matrix = CreateMatrix();
2006     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
2007     return matrix;
2008 }
2009
2010
2011
2012 void wxCairoContext::PushState()
2013 {
2014     cairo_save(m_context);
2015 }
2016
2017 void wxCairoContext::PopState()
2018 {
2019     cairo_restore(m_context);
2020 }
2021
2022 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2023 {
2024     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
2025     DrawBitmap(bitmap, x, y, w, h);
2026
2027 }
2028
2029 void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2030 {
2031     PushState();
2032
2033     // In case we're scaling the image by using a width and height different
2034     // than the bitmap's size create a pattern transformation on the surface and
2035     // draw the transformed pattern.
2036     wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
2037     cairo_pattern_t* pattern = data->GetCairoPattern();
2038     wxSize size = data->GetSize();
2039
2040     wxDouble scaleX = w / size.GetWidth();
2041     wxDouble scaleY = h / size.GetHeight();
2042
2043     // prepare to draw the image
2044     cairo_translate(m_context, x, y);
2045     cairo_scale(m_context, scaleX, scaleY);
2046     cairo_set_source(m_context, pattern);
2047     // use the original size here since the context is scaled already...
2048     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
2049     // fill the rectangle using the pattern
2050     cairo_fill(m_context);
2051
2052     PopState();
2053 }
2054
2055 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2056 {
2057     // An icon is a bitmap on wxGTK, so do this the easy way.  When we want to
2058     // start using the Cairo backend on other platforms then we may need to
2059     // fiddle with this...
2060     DrawBitmap(icon, x, y, w, h);
2061 }
2062
2063
2064 void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
2065 {
2066     wxCHECK_RET( !m_font.IsNull(),
2067                  wxT("wxCairoContext::DrawText - no valid font set") );
2068
2069     if ( str.empty())
2070         return;
2071
2072     const wxCharBuffer data = str.utf8_str();
2073     if ( !data )
2074         return;
2075
2076     if ( ((wxCairoFontData*)m_font.GetRefData())->Apply(this) )
2077     {
2078 #ifdef __WXGTK__
2079         PangoLayout *layout = pango_cairo_create_layout (m_context);
2080         const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
2081         pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
2082         pango_layout_set_text(layout, data, data.length());
2083         font.GTKSetPangoAttrs(layout);
2084
2085         cairo_move_to(m_context, x, y);
2086         pango_cairo_show_layout (m_context, layout);
2087
2088         g_object_unref (layout);
2089
2090         // Don't use Cairo text API, we already did everything.
2091         return;
2092 #endif
2093     }
2094
2095     // Cairo's x,y for drawing text is at the baseline, so we need to adjust
2096     // the position we move to by the ascent.
2097     cairo_font_extents_t fe;
2098     cairo_font_extents(m_context, &fe);
2099     cairo_move_to(m_context, x, y+fe.ascent);
2100
2101     cairo_show_text(m_context, data);
2102 }
2103
2104 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2105                                     wxDouble *descent, wxDouble *externalLeading ) const
2106 {
2107     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
2108
2109     if ( width )
2110         *width = 0;
2111     if ( height )
2112         *height = 0;
2113     if ( descent )
2114         *descent = 0;
2115     if ( externalLeading )
2116         *externalLeading = 0;
2117
2118     if ( str.empty())
2119         return;
2120
2121     if ( ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this) )
2122     {
2123 #ifdef __WXGTK__
2124         int w, h;
2125
2126         PangoLayout *layout = pango_cairo_create_layout (m_context);
2127         const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
2128         pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
2129         const wxCharBuffer data = str.utf8_str();
2130         if ( !data )
2131         {
2132             return;
2133         }
2134         pango_layout_set_text(layout, data, data.length());
2135         pango_layout_get_pixel_size (layout, &w, &h);
2136         if ( width )
2137             *width = w;
2138         if ( height )
2139             *height = h;
2140         if (descent)
2141         {
2142             PangoLayoutIter *iter = pango_layout_get_iter(layout);
2143             int baseline = pango_layout_iter_get_baseline(iter);
2144             pango_layout_iter_free(iter);
2145             *descent = h - PANGO_PIXELS(baseline);
2146         }
2147         g_object_unref (layout);
2148         return;
2149 #endif
2150     }
2151
2152     if (width)
2153     {
2154         const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
2155         cairo_text_extents_t te;
2156         cairo_text_extents(m_context, buf, &te);
2157         *width = te.width;
2158     }
2159
2160     if (height || descent || externalLeading)
2161     {
2162         cairo_font_extents_t fe;
2163         cairo_font_extents(m_context, &fe);
2164
2165         // some backends have negative descents
2166
2167         if ( fe.descent < 0 )
2168             fe.descent = -fe.descent;
2169
2170         if ( fe.height < (fe.ascent + fe.descent ) )
2171         {
2172             // some backends are broken re height ... (eg currently ATSUI)
2173             fe.height = fe.ascent + fe.descent;
2174         }
2175
2176         if (height)
2177             *height = fe.height;
2178         if ( descent )
2179             *descent = fe.descent;
2180         if ( externalLeading )
2181             *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
2182     }
2183 }
2184
2185 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2186 {
2187     widths.Empty();
2188     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
2189 #ifdef __WXGTK__
2190     const wxCharBuffer data = text.utf8_str();
2191     int w = 0;
2192     if (data.length())
2193     {
2194         PangoLayout* layout = pango_cairo_create_layout(m_context);
2195         const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
2196         pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
2197         pango_layout_set_text(layout, data, data.length());
2198         PangoLayoutIter* iter = pango_layout_get_iter(layout);
2199         PangoRectangle rect;
2200         do {
2201             pango_layout_iter_get_cluster_extents(iter, NULL, &rect);
2202             w += rect.width;
2203             widths.Add(PANGO_PIXELS(w));
2204         } while (pango_layout_iter_next_cluster(iter));
2205         pango_layout_iter_free(iter);
2206         g_object_unref(layout);
2207     }
2208     size_t i = widths.GetCount();
2209     const size_t len = text.length();
2210     while (i++ < len)
2211         widths.Add(PANGO_PIXELS(w));
2212 #else
2213     // TODO
2214 #endif
2215 }
2216
2217 void * wxCairoContext::GetNativeContext()
2218 {
2219     return m_context;
2220 }
2221
2222 bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
2223 {
2224     if (m_antialias == antialias)
2225         return true;
2226
2227     m_antialias = antialias;
2228
2229     cairo_antialias_t antialiasMode;
2230     switch (antialias)
2231     {
2232         case wxANTIALIAS_DEFAULT:
2233             antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
2234             break;
2235         case wxANTIALIAS_NONE:
2236             antialiasMode = CAIRO_ANTIALIAS_NONE;
2237             break;
2238         default:
2239             return false;
2240     }
2241     cairo_set_antialias(m_context, antialiasMode);
2242     return true;
2243 }
2244
2245 bool wxCairoContext::SetInterpolationQuality(wxInterpolationQuality WXUNUSED(interpolation))
2246 {
2247     // placeholder
2248     return false;
2249 }
2250
2251 bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
2252 {
2253     if ( m_composition == op )
2254         return true;
2255
2256     m_composition = op;
2257     cairo_operator_t cop;
2258     switch (op)
2259     {
2260         case wxCOMPOSITION_CLEAR:
2261             cop = CAIRO_OPERATOR_CLEAR;
2262             break;
2263         case wxCOMPOSITION_SOURCE:
2264             cop = CAIRO_OPERATOR_SOURCE;
2265             break;
2266         case wxCOMPOSITION_OVER:
2267             cop = CAIRO_OPERATOR_OVER;
2268             break;
2269         case wxCOMPOSITION_IN:
2270             cop = CAIRO_OPERATOR_IN;
2271             break;
2272         case wxCOMPOSITION_OUT:
2273             cop = CAIRO_OPERATOR_OUT;
2274             break;
2275         case wxCOMPOSITION_ATOP:
2276             cop = CAIRO_OPERATOR_ATOP;
2277             break;
2278         case wxCOMPOSITION_DEST:
2279             cop = CAIRO_OPERATOR_DEST;
2280             break;
2281         case wxCOMPOSITION_DEST_OVER:
2282             cop = CAIRO_OPERATOR_DEST_OVER;
2283             break;
2284         case wxCOMPOSITION_DEST_IN:
2285             cop = CAIRO_OPERATOR_DEST_IN;
2286             break;
2287         case wxCOMPOSITION_DEST_OUT:
2288             cop = CAIRO_OPERATOR_DEST_OUT;
2289             break;
2290         case wxCOMPOSITION_DEST_ATOP:
2291             cop = CAIRO_OPERATOR_DEST_ATOP;
2292             break;
2293         case wxCOMPOSITION_XOR:
2294             cop = CAIRO_OPERATOR_XOR;
2295             break;
2296         case wxCOMPOSITION_ADD:
2297             cop = CAIRO_OPERATOR_ADD;
2298             break;
2299         default:
2300             return false;
2301     }
2302     cairo_set_operator(m_context, cop);
2303     return true;
2304 }
2305
2306 void wxCairoContext::BeginLayer(wxDouble opacity)
2307 {
2308     m_layerOpacities.push_back(opacity);
2309     cairo_push_group(m_context);
2310 }
2311
2312 void wxCairoContext::EndLayer()
2313 {
2314     float opacity = m_layerOpacities.back();
2315     m_layerOpacities.pop_back();
2316     cairo_pop_group_to_source(m_context);
2317     cairo_paint_with_alpha(m_context,opacity);
2318 }
2319
2320 //-----------------------------------------------------------------------------
2321 // wxCairoRenderer declaration
2322 //-----------------------------------------------------------------------------
2323
2324 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
2325 {
2326 public :
2327     wxCairoRenderer() {}
2328
2329     virtual ~wxCairoRenderer() {}
2330
2331     // Context
2332
2333     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2334     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2335     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
2336
2337     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2338
2339     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2340 #if wxUSE_IMAGE
2341     virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
2342 #endif // wxUSE_IMAGE
2343
2344     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2345
2346     virtual wxGraphicsContext * CreateMeasuringContext();
2347 #ifdef __WXMSW__
2348 #if wxUSE_ENH_METAFILE
2349     virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
2350 #endif
2351 #endif
2352     // Path
2353
2354     virtual wxGraphicsPath CreatePath();
2355
2356     // Matrix
2357
2358     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2359         wxDouble tx=0.0, wxDouble ty=0.0);
2360
2361
2362     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2363
2364     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2365
2366     virtual wxGraphicsBrush
2367     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2368                               wxDouble x2, wxDouble y2,
2369                               const wxGraphicsGradientStops& stops);
2370
2371     virtual wxGraphicsBrush
2372     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2373                               wxDouble xc, wxDouble yc,
2374                               wxDouble radius,
2375                               const wxGraphicsGradientStops& stops);
2376
2377     // sets the font
2378     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2379     virtual wxGraphicsFont CreateFont(double sizeInPixels,
2380                                       const wxString& facename,
2381                                       int flags = wxFONTFLAG_DEFAULT,
2382                                       const wxColour& col = *wxBLACK);
2383
2384     // create a native bitmap representation
2385     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
2386 #if wxUSE_IMAGE
2387     virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
2388     virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp);
2389 #endif // wxUSE_IMAGE
2390
2391     // create a graphics bitmap from a native bitmap
2392     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
2393
2394     // create a subimage from a native image representation
2395     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
2396
2397 protected :
2398     bool EnsureIsLoaded();
2399     void Load();
2400     void Unload();
2401     friend class wxCairoModule;
2402 private :
2403     int m_loaded;
2404     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
2405 } ;
2406
2407 //-----------------------------------------------------------------------------
2408 // wxCairoRenderer implementation
2409 //-----------------------------------------------------------------------------
2410
2411 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
2412
2413 static wxCairoRenderer gs_cairoGraphicsRenderer;
2414 // temporary hack to allow creating a cairo context on any platform
2415 extern wxGraphicsRenderer* gCairoRenderer;
2416 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
2417
2418 bool wxCairoRenderer::EnsureIsLoaded()
2419 {
2420 #ifndef __WXGTK__
2421     Load();
2422     return wxCairoInit();
2423 #else
2424     return true;
2425 #endif
2426 }
2427
2428 void wxCairoRenderer::Load()
2429 {
2430     wxCairoInit();
2431 }
2432
2433 void wxCairoRenderer::Unload()
2434 {
2435     wxCairoCleanUp();
2436 }
2437
2438 // call EnsureIsLoaded() and return returnOnFail value if it fails
2439 #define ENSURE_LOADED_OR_RETURN(returnOnFail)  \
2440     if ( !EnsureIsLoaded() )                   \
2441         return (returnOnFail)
2442
2443 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
2444 {
2445     ENSURE_LOADED_OR_RETURN(NULL);
2446     return new wxCairoContext(this,dc);
2447 }
2448
2449 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
2450 {
2451     ENSURE_LOADED_OR_RETURN(NULL);
2452     return new wxCairoContext(this,dc);
2453 }
2454
2455 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
2456 {
2457     ENSURE_LOADED_OR_RETURN(NULL);
2458     return new wxCairoContext(this, dc);
2459 }
2460
2461 #ifdef __WXMSW__
2462 #if wxUSE_ENH_METAFILE
2463 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxEnhMetaFileDC& WXUNUSED(dc) )
2464 {
2465     ENSURE_LOADED_OR_RETURN(NULL);
2466     return NULL;
2467 }
2468 #endif
2469 #endif
2470
2471 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
2472 {
2473     ENSURE_LOADED_OR_RETURN(NULL);
2474 #ifdef __WXMSW__
2475     return new wxCairoContext(this,(HDC)context);
2476 #else
2477     return new wxCairoContext(this,(cairo_t*)context);
2478 #endif
2479 }
2480
2481
2482 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
2483 {
2484     ENSURE_LOADED_OR_RETURN(NULL);
2485 #ifdef __WXGTK__
2486     return new wxCairoContext(this, static_cast<GdkWindow*>(window));
2487 #else
2488     wxUnusedVar(window);
2489     return NULL;
2490 #endif
2491 }
2492
2493 #if wxUSE_IMAGE
2494 wxGraphicsContext * wxCairoRenderer::CreateContextFromImage(wxImage& image)
2495 {
2496     return new wxCairoImageContext(this, image);
2497 }
2498 #endif // wxUSE_IMAGE
2499
2500 wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
2501 {
2502     ENSURE_LOADED_OR_RETURN(NULL);
2503 #ifdef __WXGTK__
2504     return CreateContextFromNativeWindow(gdk_get_default_root_window());
2505 #else
2506     return NULL;
2507     // TODO
2508 #endif
2509 }
2510
2511 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
2512 {
2513     ENSURE_LOADED_OR_RETURN(NULL);
2514     return new wxCairoContext(this, window );
2515 }
2516
2517 // Path
2518
2519 wxGraphicsPath wxCairoRenderer::CreatePath()
2520 {
2521     ENSURE_LOADED_OR_RETURN(wxNullGraphicsPath);
2522     wxGraphicsPath path;
2523     path.SetRefData( new wxCairoPathData(this) );
2524     return path;
2525 }
2526
2527
2528 // Matrix
2529
2530 wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2531                                                 wxDouble tx, wxDouble ty)
2532
2533 {
2534     ENSURE_LOADED_OR_RETURN(wxNullGraphicsMatrix);
2535     wxGraphicsMatrix m;
2536     wxCairoMatrixData* data = new wxCairoMatrixData( this );
2537     data->Set( a,b,c,d,tx,ty ) ;
2538     m.SetRefData(data);
2539     return m;
2540 }
2541
2542 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
2543 {
2544     ENSURE_LOADED_OR_RETURN(wxNullGraphicsPen);
2545     if ( !pen.IsOk() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT )
2546         return wxNullGraphicsPen;
2547     else
2548     {
2549         wxGraphicsPen p;
2550         p.SetRefData(new wxCairoPenData( this, pen ));
2551         return p;
2552     }
2553 }
2554
2555 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
2556 {
2557     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2558     if ( !brush.IsOk() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT )
2559         return wxNullGraphicsBrush;
2560     else
2561     {
2562         wxGraphicsBrush p;
2563         p.SetRefData(new wxCairoBrushData( this, brush ));
2564         return p;
2565     }
2566 }
2567
2568 wxGraphicsBrush
2569 wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2570                                            wxDouble x2, wxDouble y2,
2571                                            const wxGraphicsGradientStops& stops)
2572 {
2573     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2574     wxGraphicsBrush p;
2575     wxCairoBrushData* d = new wxCairoBrushData( this );
2576     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
2577     p.SetRefData(d);
2578     return p;
2579 }
2580
2581 wxGraphicsBrush
2582 wxCairoRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2583                                            wxDouble xc, wxDouble yc, wxDouble r,
2584                                            const wxGraphicsGradientStops& stops)
2585 {
2586     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2587     wxGraphicsBrush p;
2588     wxCairoBrushData* d = new wxCairoBrushData( this );
2589     d->CreateRadialGradientBrush(xo, yo, xc, yc, r, stops);
2590     p.SetRefData(d);
2591     return p;
2592 }
2593
2594 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
2595 {
2596     ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
2597     if ( font.IsOk() )
2598     {
2599         wxGraphicsFont p;
2600         p.SetRefData(new wxCairoFontData( this , font, col ));
2601         return p;
2602     }
2603     else
2604         return wxNullGraphicsFont;
2605 }
2606
2607 wxGraphicsFont
2608 wxCairoRenderer::CreateFont(double sizeInPixels,
2609                             const wxString& facename,
2610                             int flags,
2611                             const wxColour& col)
2612 {
2613     ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
2614
2615     wxGraphicsFont font;
2616     font.SetRefData(new wxCairoFontData(this, sizeInPixels, facename, flags, col));
2617     return font;
2618 }
2619
2620 wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
2621 {
2622     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2623     if ( bmp.IsOk() )
2624     {
2625         wxGraphicsBitmap p;
2626         p.SetRefData(new wxCairoBitmapData( this , bmp ));
2627         return p;
2628     }
2629     else
2630         return wxNullGraphicsBitmap;
2631 }
2632
2633 #if wxUSE_IMAGE
2634
2635 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromImage(const wxImage& image)
2636 {
2637     wxGraphicsBitmap bmp;
2638
2639     ENSURE_LOADED_OR_RETURN(bmp);
2640
2641     if ( image.IsOk() )
2642     {
2643         bmp.SetRefData(new wxCairoBitmapData(this, image));
2644     }
2645
2646     return bmp;
2647 }
2648
2649 wxImage wxCairoRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
2650 {
2651     ENSURE_LOADED_OR_RETURN(wxNullImage);
2652
2653     const wxCairoBitmapData* const
2654         data = static_cast<wxCairoBitmapData*>(bmp.GetGraphicsData());
2655
2656     return data ? data->ConvertToImage() : wxNullImage;
2657 }
2658
2659 #endif // wxUSE_IMAGE
2660
2661
2662 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
2663 {
2664     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2665     if ( bitmap != NULL )
2666     {
2667         wxGraphicsBitmap p;
2668         p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
2669         return p;
2670     }
2671     else
2672         return wxNullGraphicsBitmap;
2673 }
2674
2675 wxGraphicsBitmap
2676 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
2677                                  wxDouble WXUNUSED(x),
2678                                  wxDouble WXUNUSED(y),
2679                                  wxDouble WXUNUSED(w),
2680                                  wxDouble WXUNUSED(h))
2681 {
2682     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2683     wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
2684     return wxNullGraphicsBitmap;
2685 }
2686
2687 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2688 {
2689     return &gs_cairoGraphicsRenderer;
2690 }
2691
2692 #else // !wxUSE_CAIRO
2693
2694 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2695 {
2696     return NULL;
2697 }
2698
2699 #endif  // wxUSE_CAIRO/!wxUSE_CAIRO
2700
2701 // MSW and OS X have their own native default renderers, but the other ports
2702 // use Cairo by default
2703 #if !(defined(__WXMSW__) || defined(__WXOSX__))
2704 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2705 {
2706     return GetCairoRenderer();
2707 }
2708 #endif // !(__WXMSW__ || __WXOSX__)
2709
2710 #endif // wxUSE_GRAPHICS_CONTEXT