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 // Copyright:   (c) 2006 Stefan Csomor
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/wxprec.h"
  12
  13 #ifdef __BORLANDC__
  14     #pragma hdrstop
  15 #endif
  16
  17 #if wxUSE_GRAPHICS_CONTEXT
  18
  19 #include "wx/graphics.h"
  20
  21 #if wxUSE_CAIRO
  22
  23 // keep cairo.h from defining dllimport as we're defining the symbols inside
  24 // the wx dll in order to load them dynamically.
  25 #define cairo_public
  26
  27 #include <cairo.h>
  28
  29 bool wxCairoInit();
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/bitmap.h"
  33     #include "wx/icon.h"
  34     #include "wx/dcclient.h"
  35     #include "wx/dcmemory.h"
  36     #include "wx/dcprint.h"
  37     #include "wx/window.h"
  38 #endif
  39
  40 #include "wx/private/graphics.h"
  41 #include "wx/rawbmp.h"
  42 #include "wx/vector.h"
  43
  44 using namespace std;
  45
  46 //-----------------------------------------------------------------------------
  47 // device context implementation
  48 //
  49 // more and more of the dc functionality should be implemented by calling
  50 // the appropricate wxCairoContext, but we will have to do that step by step
  51 // also coordinate conversions should be moved to native matrix ops
  52 //-----------------------------------------------------------------------------
  53
  54 // we always stock two context states, one at entry, to be able to preserve the
  55 // state we were called with, the other one after changing to HI Graphics orientation
  56 // (this one is used for getting back clippings etc)
  57
  58 //-----------------------------------------------------------------------------
  59 // wxGraphicsPath implementation
  60 //-----------------------------------------------------------------------------
  61
  62 // TODO remove this dependency (gdiplus needs the macros)
  63
  64 #ifndef max
  65 #define max(a,b)            (((a) > (b)) ? (a) : (b))
  66 #endif
  67
  68 #ifndef min
  69 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  70 #endif
  71
  72 #include <cairo.h>
  73 #ifdef __WXMSW__
  74 #include <cairo-win32.h>
  75 // Notice that the order is important: cairo-win32.h includes windows.h which
  76 // pollutes the global name space with macros so include our own header which
  77 // #undefines them after it.
  78 #include "wx/msw/private.h"
  79 #endif
  80
  81 #ifdef __WXGTK__
  82 #include <gtk/gtk.h>
  83 #include "wx/fontutil.h"
  84 #ifndef __WXGTK3__
  85 #include "wx/gtk/dc.h"
  86 #endif
  87 #endif
  88
  89 #ifdef __WXMAC__
  90 #include "wx/osx/private.h"
  91 #include <cairo-quartz.h>
  92 #include <cairo-atsui.h>
  93 #endif
  94
  95 class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
  96 {
  97 public :
  98     wxCairoPathData(wxGraphicsRenderer* renderer, cairo_t* path = NULL);
  99     ~wxCairoPathData();
 100
 101     virtual wxGraphicsObjectRefData *Clone() const;
 102
 103     //
 104     // These are the path primitives from which everything else can be constructed
 105     //
 106
 107     // begins a new subpath at (x,y)
 108     virtual void MoveToPoint( wxDouble x, wxDouble y );
 109
 110     // adds a straight line from the current point to (x,y)
 111     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 112
 113     // adds a cubic Bezier curve from the current point, using two control points and an end point
 114     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 115
 116
 117     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 118     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 119
 120     // gets the last point of the current path, (0,0) if not yet set
 121     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 122
 123     // adds another path
 124     virtual void AddPath( const wxGraphicsPathData* path );
 125
 126     // closes the current sub-path
 127     virtual void CloseSubpath();
 128
 129     //
 130     // These are convenience functions which - if not available natively will be assembled
 131     // using the primitives from above
 132     //
 133
 134     /*
 135
 136     // appends a rectangle as a new closed subpath
 137     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 138     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 139     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 140
 141     // 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)
 142     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 143     */
 144
 145     // returns the native path
 146     virtual void * GetNativePath() const ;
 147
 148     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 149     virtual void UnGetNativePath(void *p) const;
 150
 151     // transforms each point of this path by the matrix
 152     virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
 153
 154     // gets the bounding box enclosing all points (possibly including control points)
 155     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
 156
 157     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxWINDING_RULE) const;
 158
 159 private :
 160     cairo_t* m_pathContext;
 161 };
 162
 163 class WXDLLIMPEXP_CORE wxCairoMatrixData : public wxGraphicsMatrixData
 164 {
 165 public :
 166     wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
 167     virtual ~wxCairoMatrixData() ;
 168
 169     virtual wxGraphicsObjectRefData *Clone() const ;
 170
 171     // concatenates the matrix
 172     virtual void Concat( const wxGraphicsMatrixData *t );
 173
 174     // sets the matrix to the respective values
 175     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 176         wxDouble tx=0.0, wxDouble ty=0.0);
 177
 178     // gets the component valuess of the matrix
 179     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 180                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 181
 182     // makes this the inverse matrix
 183     virtual void Invert();
 184
 185     // returns true if the elements of the transformation matrix are equal ?
 186     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 187
 188     // return true if this is the identity matrix
 189     virtual bool IsIdentity() const;
 190
 191     //
 192     // transformation
 193     //
 194
 195     // add the translation to this matrix
 196     virtual void Translate( wxDouble dx , wxDouble dy );
 197
 198     // add the scale to this matrix
 199     virtual void Scale( wxDouble xScale , wxDouble yScale );
 200
 201     // add the rotation to this matrix (radians)
 202     virtual void Rotate( wxDouble angle );
 203
 204     //
 205     // apply the transforms
 206     //
 207
 208     // applies that matrix to the point
 209     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 210
 211     // applies the matrix except for translations
 212     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 213
 214     // returns the native representation
 215     virtual void * GetNativeMatrix() const;
 216 private:
 217     cairo_matrix_t m_matrix ;
 218 } ;
 219
 220 // Common base class for pens and brushes.
 221 class wxCairoPenBrushBaseData : public wxGraphicsObjectRefData
 222 {
 223 public:
 224     wxCairoPenBrushBaseData(wxGraphicsRenderer* renderer,
 225                             const wxColour& col,
 226                             bool isTransparent);
 227     virtual ~wxCairoPenBrushBaseData();
 228
 229     virtual void Apply( wxGraphicsContext* context );
 230
 231 protected:
 232     // Call this to use the given bitmap as stipple. Bitmap must be non-null
 233     // and valid.
 234     void InitStipple(wxBitmap* bmp);
 235
 236     // Call this to use the given hatch style. Hatch style must be valid.
 237     void InitHatch(wxHatchStyle hatchStyle);
 238
 239
 240     double m_red;
 241     double m_green;
 242     double m_blue;
 243     double m_alpha;
 244
 245     cairo_pattern_t* m_pattern;
 246     class wxCairoBitmapData* m_bmpdata;
 247
 248 private:
 249     // Called once to allocate m_pattern if needed.
 250     void InitHatchPattern(cairo_t* ctext);
 251
 252     wxHatchStyle m_hatchStyle;
 253
 254     wxDECLARE_NO_COPY_CLASS(wxCairoPenBrushBaseData);
 255 };
 256
 257 class WXDLLIMPEXP_CORE wxCairoPenData : public wxCairoPenBrushBaseData
 258 {
 259 public:
 260     wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 261     ~wxCairoPenData();
 262
 263     void Init();
 264
 265     virtual void Apply( wxGraphicsContext* context );
 266     virtual wxDouble GetWidth() { return m_width; }
 267
 268 private :
 269     double m_width;
 270
 271     cairo_line_cap_t m_cap;
 272     cairo_line_join_t m_join;
 273
 274     int m_count;
 275     const double *m_lengths;
 276     double *m_userLengths;
 277
 278     wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
 279 };
 280
 281 class WXDLLIMPEXP_CORE wxCairoBrushData : public wxCairoPenBrushBaseData
 282 {
 283 public:
 284     wxCairoBrushData( wxGraphicsRenderer* renderer );
 285     wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 286
 287     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 288                                    wxDouble x2, wxDouble y2,
 289                                    const wxGraphicsGradientStops& stops);
 290     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 291                                    wxDouble xc, wxDouble yc, wxDouble radius,
 292                                    const wxGraphicsGradientStops& stops);
 293
 294 protected:
 295     virtual void Init();
 296
 297     // common part of Create{Linear,Radial}GradientBrush()
 298     void AddGradientStops(const wxGraphicsGradientStops& stops);
 299 };
 300
 301 class wxCairoFontData : public wxGraphicsObjectRefData
 302 {
 303 public:
 304     wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 305     wxCairoFontData(wxGraphicsRenderer* renderer,
 306                     double sizeInPixels,
 307                     const wxString& facename,
 308                     int flags,
 309                     const wxColour& col);
 310     ~wxCairoFontData();
 311
 312     virtual bool Apply( wxGraphicsContext* context );
 313 #ifdef __WXGTK__
 314     const wxFont& GetFont() const { return m_wxfont; }
 315 #endif
 316 private :
 317     void InitColour(const wxColour& col);
 318     void InitFontComponents(const wxString& facename,
 319                             cairo_font_slant_t slant,
 320                             cairo_font_weight_t weight);
 321
 322     double m_size;
 323     double m_red;
 324     double m_green;
 325     double m_blue;
 326     double m_alpha;
 327 #ifdef __WXMAC__
 328     cairo_font_face_t *m_font;
 329 #elif defined(__WXGTK__)
 330     wxFont m_wxfont;
 331 #endif
 332
 333     // These members are used when the font is created from its face name and
 334     // flags (and not from wxFont) and also even when creating it from wxFont
 335     // on the platforms not covered above.
 336     //
 337     // Notice that we can't use cairo_font_face_t instead of storing those,
 338     // even though it would be simpler and need less #ifdefs, because
 339     // cairo_toy_font_face_create() that we'd need to create it is only
 340     // available in Cairo 1.8 and we require just 1.2 currently. If we do drop
 341     // support for < 1.8 versions in the future it would be definitely better
 342     // to use cairo_toy_font_face_create() instead.
 343     wxCharBuffer m_fontName;
 344     cairo_font_slant_t m_slant;
 345     cairo_font_weight_t m_weight;
 346 };
 347
 348 class wxCairoBitmapData : public wxGraphicsBitmapData
 349 {
 350 public:
 351     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
 352 #if wxUSE_IMAGE
 353     wxCairoBitmapData(wxGraphicsRenderer* renderer, const wxImage& image);
 354 #endif // wxUSE_IMAGE
 355     wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
 356     ~wxCairoBitmapData();
 357
 358     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
 359     virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
 360     virtual void* GetNativeBitmap() const { return m_surface; }
 361     virtual wxSize GetSize() { return wxSize(m_width, m_height); }
 362
 363 #if wxUSE_IMAGE
 364     wxImage ConvertToImage() const;
 365 #endif // wxUSE_IMAGE
 366
 367 private :
 368     // Allocate m_buffer for the bitmap of the given size in the given format.
 369     //
 370     // Returns the stride used for the buffer.
 371     int InitBuffer(int width, int height, cairo_format_t format);
 372
 373     // Really create the surface using the buffer (which was supposed to be
 374     // filled since InitBuffer() call).
 375     void InitSurface(cairo_format_t format, int stride);
 376
 377
 378     cairo_surface_t* m_surface;
 379     cairo_pattern_t* m_pattern;
 380     int m_width;
 381     int m_height;
 382     unsigned char* m_buffer;
 383 };
 384
 385 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 386 {
 387 public:
 388     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 389     wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
 390     wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
 391 #ifdef __WXGTK__
 392     wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window );
 393 #endif
 394 #ifdef __WXMSW__
 395     wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
 396 #endif
 397     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 398     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 399
 400     // If this ctor is used, Init() must be called by the derived class later.
 401     wxCairoContext( wxGraphicsRenderer* renderer );
 402
 403     virtual ~wxCairoContext();
 404
 405     virtual bool ShouldOffset() const
 406     {
 407         if ( !m_enableOffset )
 408             return false;
 409
 410         int penwidth = 0 ;
 411         if ( !m_pen.IsNull() )
 412         {
 413             penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
 414             if ( penwidth == 0 )
 415                 penwidth = 1;
 416         }
 417         return ( penwidth % 2 ) == 1;
 418     }
 419
 420     virtual void Clip( const wxRegion &region );
 421 #ifdef __WXMSW__
 422     cairo_surface_t* m_mswSurface;
 423     WindowHDC m_mswWindowHDC;
 424 #endif
 425
 426     // clips drawings to the rect
 427     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 428
 429     // resets the clipping to original extent
 430     virtual void ResetClip();
 431
 432     virtual void * GetNativeContext();
 433
 434     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 435
 436     virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
 437
 438     virtual bool SetCompositionMode(wxCompositionMode op);
 439
 440     virtual void BeginLayer(wxDouble opacity);
 441
 442     virtual void EndLayer();
 443
 444     virtual void StrokePath( const wxGraphicsPath& p );
 445     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
 446
 447     virtual void Translate( wxDouble dx , wxDouble dy );
 448     virtual void Scale( wxDouble xScale , wxDouble yScale );
 449     virtual void Rotate( wxDouble angle );
 450
 451     // concatenates this transform with the current transform of this context
 452     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 453
 454     // sets the transform of this context
 455     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 456
 457     // gets the matrix of this context
 458     virtual wxGraphicsMatrix GetTransform() const;
 459
 460     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 461     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 462     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 463     virtual void PushState();
 464     virtual void PopState();
 465
 466     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 467                                 wxDouble *descent, wxDouble *externalLeading ) const;
 468     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 469
 470 protected:
 471     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
 472
 473     void Init(cairo_t *context);
 474
 475 private:
 476     cairo_t* m_context;
 477
 478     wxVector<float> m_layerOpacities;
 479
 480     wxDECLARE_NO_COPY_CLASS(wxCairoContext);
 481 };
 482
 483 #if wxUSE_IMAGE
 484 // ----------------------------------------------------------------------------
 485 // wxCairoImageContext: context associated with a wxImage.
 486 // ----------------------------------------------------------------------------
 487
 488 class wxCairoImageContext : public wxCairoContext
 489 {
 490 public:
 491     wxCairoImageContext(wxGraphicsRenderer* renderer, wxImage& image) :
 492         wxCairoContext(renderer),
 493         m_image(image),
 494         m_data(renderer, image)
 495     {
 496         Init(cairo_create(m_data.GetCairoSurface()));
 497     }
 498
 499     virtual ~wxCairoImageContext()
 500     {
 501         m_image = m_data.ConvertToImage();
 502     }
 503
 504 private:
 505     wxImage& m_image;
 506     wxCairoBitmapData m_data;
 507
 508     wxDECLARE_NO_COPY_CLASS(wxCairoImageContext);
 509 };
 510 #endif // wxUSE_IMAGE
 511
 512 // ----------------------------------------------------------------------------
 513 // wxCairoPenBrushBaseData implementation
 514 //-----------------------------------------------------------------------------
 515
 516 wxCairoPenBrushBaseData::wxCairoPenBrushBaseData(wxGraphicsRenderer* renderer,
 517                                                  const wxColour& col,
 518                                                  bool isTransparent)
 519     : wxGraphicsObjectRefData(renderer)
 520 {
 521     m_hatchStyle = wxHATCHSTYLE_INVALID;
 522     m_pattern = NULL;
 523     m_bmpdata = NULL;
 524
 525     if ( isTransparent )
 526     {
 527         m_red =
 528         m_green =
 529         m_blue =
 530         m_alpha = 0;
 531     }
 532     else // non-transparent
 533     {
 534         m_red = col.Red()/255.0;
 535         m_green = col.Green()/255.0;
 536         m_blue = col.Blue()/255.0;
 537         m_alpha = col.Alpha()/255.0;
 538     }
 539 }
 540
 541 wxCairoPenBrushBaseData::~wxCairoPenBrushBaseData()
 542 {
 543     if (m_bmpdata)
 544     {
 545         // Deleting the bitmap data also deletes the pattern referenced by
 546         // m_pattern, so set it to NULL to avoid deleting it twice.
 547         delete m_bmpdata;
 548         m_pattern = NULL;
 549     }
 550     if (m_pattern)
 551         cairo_pattern_destroy(m_pattern);
 552 }
 553
 554 void wxCairoPenBrushBaseData::InitHatchPattern(cairo_t* ctext)
 555 {
 556     cairo_surface_t* const
 557         surface = cairo_surface_create_similar(
 558                     cairo_get_target(ctext), CAIRO_CONTENT_COLOR_ALPHA, 10, 10
 559                 );
 560
 561     cairo_t* const cr = cairo_create(surface);
 562     cairo_set_line_cap(cr, CAIRO_LINE_CAP_SQUARE);
 563     cairo_set_line_width(cr, 1);
 564     cairo_set_line_join(cr,CAIRO_LINE_JOIN_MITER);
 565
 566     switch ( m_hatchStyle )
 567     {
 568         case wxHATCHSTYLE_CROSS:
 569             cairo_move_to(cr, 5, 0);
 570             cairo_line_to(cr, 5, 10);
 571             cairo_move_to(cr, 0, 5);
 572             cairo_line_to(cr, 10, 5);
 573             break;
 574
 575         case wxHATCHSTYLE_BDIAGONAL:
 576             cairo_move_to(cr, 0, 10);
 577             cairo_line_to(cr, 10, 0);
 578             break;
 579
 580         case wxHATCHSTYLE_FDIAGONAL:
 581             cairo_move_to(cr, 0, 0);
 582             cairo_line_to(cr, 10, 10);
 583             break;
 584
 585         case wxHATCHSTYLE_CROSSDIAG:
 586             cairo_move_to(cr, 0, 0);
 587             cairo_line_to(cr, 10, 10);
 588             cairo_move_to(cr, 10, 0);
 589             cairo_line_to(cr, 0, 10);
 590             break;
 591
 592         case wxHATCHSTYLE_HORIZONTAL:
 593             cairo_move_to(cr, 0, 5);
 594             cairo_line_to(cr, 10, 5);
 595             break;
 596
 597         case wxHATCHSTYLE_VERTICAL:
 598             cairo_move_to(cr, 5, 0);
 599             cairo_line_to(cr, 5, 10);
 600             break;
 601
 602         default:
 603             wxFAIL_MSG(wxS("Invalid hatch pattern style."));
 604     }
 605
 606     cairo_set_source_rgba(cr, m_red, m_green, m_blue, m_alpha);
 607     cairo_stroke(cr);
 608
 609     cairo_destroy(cr);
 610
 611     m_pattern = cairo_pattern_create_for_surface(surface);
 612     cairo_surface_destroy(surface);
 613     cairo_pattern_set_extend(m_pattern, CAIRO_EXTEND_REPEAT);
 614 }
 615
 616 void wxCairoPenBrushBaseData::InitStipple(wxBitmap* bmp)
 617 {
 618     wxCHECK_RET( bmp && bmp->IsOk(), wxS("Invalid stippled bitmap") );
 619
 620     m_bmpdata = new wxCairoBitmapData(GetRenderer(), *bmp);
 621     m_pattern = m_bmpdata->GetCairoPattern();
 622     cairo_pattern_set_extend(m_pattern, CAIRO_EXTEND_REPEAT);
 623 }
 624
 625 void wxCairoPenBrushBaseData::InitHatch(wxHatchStyle hatchStyle)
 626 {
 627     // We can't create m_pattern right now as we don't have the Cairo context
 628     // needed for it, so just remember that we need to do it.
 629     m_hatchStyle = hatchStyle;
 630 }
 631
 632 void wxCairoPenBrushBaseData::Apply( wxGraphicsContext* context )
 633 {
 634     cairo_t* const ctext = (cairo_t*) context->GetNativeContext();
 635
 636     if ( m_hatchStyle != wxHATCHSTYLE_INVALID && !m_pattern )
 637         InitHatchPattern(ctext);
 638
 639     if ( m_pattern )
 640         cairo_set_source(ctext, m_pattern);
 641     else
 642         cairo_set_source_rgba(ctext, m_red, m_green, m_blue, m_alpha);
 643 }
 644
 645 //-----------------------------------------------------------------------------
 646 // wxCairoPenData implementation
 647 //-----------------------------------------------------------------------------
 648
 649 wxCairoPenData::~wxCairoPenData()
 650 {
 651     delete[] m_userLengths;
 652 }
 653
 654 void wxCairoPenData::Init()
 655 {
 656     m_lengths = NULL;
 657     m_userLengths = NULL;
 658     m_width = 0;
 659     m_count = 0;
 660 }
 661
 662 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 663     : wxCairoPenBrushBaseData(renderer, pen.GetColour(), pen.IsTransparent())
 664 {
 665     Init();
 666     m_width = pen.GetWidth();
 667     if (m_width <= 0.0)
 668         m_width = 0.1;
 669
 670     switch ( pen.GetCap() )
 671     {
 672     case wxCAP_ROUND :
 673         m_cap = CAIRO_LINE_CAP_ROUND;
 674         break;
 675
 676     case wxCAP_PROJECTING :
 677         m_cap = CAIRO_LINE_CAP_SQUARE;
 678         break;
 679
 680     case wxCAP_BUTT :
 681         m_cap = CAIRO_LINE_CAP_BUTT;
 682         break;
 683
 684     default :
 685         m_cap = CAIRO_LINE_CAP_BUTT;
 686         break;
 687     }
 688
 689     switch ( pen.GetJoin() )
 690     {
 691     case wxJOIN_BEVEL :
 692         m_join = CAIRO_LINE_JOIN_BEVEL;
 693         break;
 694
 695     case wxJOIN_MITER :
 696         m_join = CAIRO_LINE_JOIN_MITER;
 697         break;
 698
 699     case wxJOIN_ROUND :
 700         m_join = CAIRO_LINE_JOIN_ROUND;
 701         break;
 702
 703     default :
 704         m_join = CAIRO_LINE_JOIN_MITER;
 705         break;
 706     }
 707
 708     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 709     const double dotted[] =
 710     {
 711         dashUnit , dashUnit + 2.0
 712     };
 713     static const double short_dashed[] =
 714     {
 715         9.0 , 6.0
 716     };
 717     static const double dashed[] =
 718     {
 719         19.0 , 9.0
 720     };
 721     static const double dotted_dashed[] =
 722     {
 723         9.0 , 6.0 , 3.0 , 3.0
 724     };
 725
 726     switch ( pen.GetStyle() )
 727     {
 728     case wxPENSTYLE_SOLID :
 729         break;
 730
 731     case wxPENSTYLE_DOT :
 732         m_count = WXSIZEOF(dotted);
 733         m_userLengths = new double[ m_count ] ;
 734         memcpy( m_userLengths, dotted, sizeof(dotted) );
 735         m_lengths = m_userLengths;
 736         break;
 737
 738     case wxPENSTYLE_LONG_DASH :
 739         m_lengths = dashed ;
 740         m_count = WXSIZEOF(dashed);
 741         break;
 742
 743     case wxPENSTYLE_SHORT_DASH :
 744         m_lengths = short_dashed ;
 745         m_count = WXSIZEOF(short_dashed);
 746         break;
 747
 748     case wxPENSTYLE_DOT_DASH :
 749         m_lengths = dotted_dashed ;
 750         m_count = WXSIZEOF(dotted_dashed);
 751         break;
 752
 753     case wxPENSTYLE_USER_DASH :
 754         {
 755             wxDash *wxdashes ;
 756             m_count = pen.GetDashes( &wxdashes ) ;
 757             if ((wxdashes != NULL) && (m_count > 0))
 758             {
 759                 m_userLengths = new double[m_count] ;
 760                 for ( int i = 0 ; i < m_count ; ++i )
 761                 {
 762                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 763
 764                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 765                         m_userLengths[i] = dashUnit + 2.0 ;
 766                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 767                         m_userLengths[i] = dashUnit ;
 768                 }
 769             }
 770             m_lengths = m_userLengths ;
 771         }
 772         break;
 773
 774     case wxPENSTYLE_STIPPLE :
 775     case wxPENSTYLE_STIPPLE_MASK :
 776     case wxPENSTYLE_STIPPLE_MASK_OPAQUE :
 777         InitStipple(pen.GetStipple());
 778         break;
 779
 780     default :
 781         if ( pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
 782             && pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
 783         {
 784             InitHatch(static_cast<wxHatchStyle>(pen.GetStyle()));
 785         }
 786         break;
 787     }
 788 }
 789
 790 void wxCairoPenData::Apply( wxGraphicsContext* context )
 791 {
 792     wxCairoPenBrushBaseData::Apply(context);
 793
 794     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 795     cairo_set_line_width(ctext,m_width);
 796     cairo_set_line_cap(ctext,m_cap);
 797     cairo_set_line_join(ctext,m_join);
 798     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 799 }
 800
 801 //-----------------------------------------------------------------------------
 802 // wxCairoBrushData implementation
 803 //-----------------------------------------------------------------------------
 804
 805 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 806     : wxCairoPenBrushBaseData(renderer, wxColour(), true /* transparent */)
 807 {
 808     Init();
 809 }
 810
 811 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer,
 812                                     const wxBrush &brush )
 813     : wxCairoPenBrushBaseData(renderer, brush.GetColour(), brush.IsTransparent())
 814 {
 815     Init();
 816
 817     switch ( brush.GetStyle() )
 818     {
 819         case wxBRUSHSTYLE_STIPPLE:
 820         case wxBRUSHSTYLE_STIPPLE_MASK:
 821         case wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE:
 822             InitStipple(brush.GetStipple());
 823             break;
 824
 825         default:
 826             if ( brush.IsHatch() )
 827                 InitHatch(static_cast<wxHatchStyle>(brush.GetStyle()));
 828             break;
 829     }
 830 }
 831
 832 void wxCairoBrushData::AddGradientStops(const wxGraphicsGradientStops& stops)
 833 {
 834     // loop over all the stops, they include the beginning and ending ones
 835     const unsigned numStops = stops.GetCount();
 836     for ( unsigned n = 0; n < numStops; n++ )
 837     {
 838         const wxGraphicsGradientStop stop = stops.Item(n);
 839
 840         const wxColour col = stop.GetColour();
 841
 842         cairo_pattern_add_color_stop_rgba
 843         (
 844             m_pattern,
 845             stop.GetPosition(),
 846             col.Red()/255.0,
 847             col.Green()/255.0,
 848             col.Blue()/255.0,
 849             col.Alpha()/255.0
 850         );
 851     }
 852
 853     wxASSERT_MSG(cairo_pattern_status(m_pattern) == CAIRO_STATUS_SUCCESS,
 854                  wxT("Couldn't create cairo pattern"));
 855 }
 856
 857 void
 858 wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 859                                             wxDouble x2, wxDouble y2,
 860                                             const wxGraphicsGradientStops& stops)
 861 {
 862     m_pattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 863
 864     AddGradientStops(stops);
 865 }
 866
 867 void
 868 wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 869                                             wxDouble xc, wxDouble yc,
 870                                             wxDouble radius,
 871                                             const wxGraphicsGradientStops& stops)
 872 {
 873     m_pattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 874
 875     AddGradientStops(stops);
 876 }
 877
 878 void wxCairoBrushData::Init()
 879 {
 880     m_pattern = NULL;
 881     m_bmpdata = NULL;
 882 }
 883
 884 //-----------------------------------------------------------------------------
 885 // wxCairoFontData implementation
 886 //-----------------------------------------------------------------------------
 887
 888 void wxCairoFontData::InitColour(const wxColour& col)
 889 {
 890     m_red = col.Red()/255.0;
 891     m_green = col.Green()/255.0;
 892     m_blue = col.Blue()/255.0;
 893     m_alpha = col.Alpha()/255.0;
 894 }
 895
 896 void
 897 wxCairoFontData::InitFontComponents(const wxString& facename,
 898                                     cairo_font_slant_t slant,
 899                                     cairo_font_weight_t weight)
 900 {
 901     m_fontName = facename.mb_str(wxConvUTF8);
 902     m_slant = slant;
 903     m_weight = weight;
 904 }
 905
 906 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 907                          const wxColour& col )
 908     : wxGraphicsObjectRefData(renderer)
 909 #ifdef __WXGTK__
 910     , m_wxfont(font)
 911 #endif
 912 {
 913     InitColour(col);
 914
 915     m_size = font.GetPointSize();
 916
 917 #ifdef __WXMAC__
 918     m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
 919 #elif defined(__WXGTK__)
 920 #else
 921     InitFontComponents
 922     (
 923         font.GetFaceName(),
 924         font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC
 925                                               : CAIRO_FONT_SLANT_NORMAL,
 926         font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD
 927                                               : CAIRO_FONT_WEIGHT_NORMAL
 928     );
 929 #endif
 930 }
 931
 932 wxCairoFontData::wxCairoFontData(wxGraphicsRenderer* renderer,
 933                                  double sizeInPixels,
 934                                  const wxString& facename,
 935                                  int flags,
 936                                  const wxColour& col) :
 937     wxGraphicsObjectRefData(renderer)
 938 {
 939     InitColour(col);
 940
 941     // Resolution for Cairo image surfaces is 72 DPI meaning that the sizes in
 942     // points and pixels are identical, so we can just pass the size in pixels
 943     // directly to cairo_set_font_size().
 944     m_size = sizeInPixels;
 945
 946 #if defined(__WXMAC__)
 947     m_font = NULL;
 948 #endif
 949
 950     // There is no need to set m_underlined under wxGTK in this case, it can
 951     // only be used if m_font != NULL.
 952
 953     InitFontComponents
 954     (
 955         facename,
 956         flags & wxFONTFLAG_ITALIC ? CAIRO_FONT_SLANT_ITALIC
 957                                   : CAIRO_FONT_SLANT_NORMAL,
 958         flags & wxFONTFLAG_BOLD ? CAIRO_FONT_WEIGHT_BOLD
 959                                 : CAIRO_FONT_WEIGHT_NORMAL
 960     );
 961 }
 962
 963 wxCairoFontData::~wxCairoFontData()
 964 {
 965 #ifdef __WXMAC__
 966     if ( m_font )
 967         cairo_font_face_destroy( m_font );
 968 #endif
 969 }
 970
 971 bool wxCairoFontData::Apply( wxGraphicsContext* context )
 972 {
 973     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 974     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 975 #ifdef __WXGTK__
 976     if (m_wxfont.IsOk())
 977     {
 978         // Nothing to do, the caller uses Pango layout functions to do
 979         // everything.
 980         return true;
 981     }
 982 #elif defined(__WXMAC__)
 983     if ( m_font )
 984     {
 985         cairo_set_font_face(ctext, m_font);
 986         cairo_set_font_size(ctext, m_size );
 987         return true;
 988     }
 989 #endif
 990
 991     // If we get here, we must be on a platform without native font support or
 992     // we're using toy Cairo API even under wxGTK/wxMac.
 993     cairo_select_font_face(ctext, m_fontName, m_slant, m_weight );
 994     cairo_set_font_size(ctext, m_size );
 995
 996     // Indicate that we don't use native fonts for the platforms which care
 997     // about this (currently only wxGTK).
 998     return false;
 999 }
1000
1001 //-----------------------------------------------------------------------------
1002 // wxCairoPathData implementation
1003 //-----------------------------------------------------------------------------
1004
1005 wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
1006     : wxGraphicsPathData(renderer)
1007 {
1008     if (pathcontext)
1009     {
1010         m_pathContext = pathcontext;
1011     }
1012     else
1013     {
1014         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
1015         m_pathContext = cairo_create(surface);
1016         cairo_surface_destroy (surface);
1017     }
1018 }
1019
1020 wxCairoPathData::~wxCairoPathData()
1021 {
1022     cairo_destroy(m_pathContext);
1023 }
1024
1025 wxGraphicsObjectRefData *wxCairoPathData::Clone() const
1026 {
1027     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
1028     cairo_t* pathcontext = cairo_create(surface);
1029     cairo_surface_destroy (surface);
1030
1031     cairo_path_t* path = cairo_copy_path(m_pathContext);
1032     cairo_append_path(pathcontext, path);
1033     cairo_path_destroy(path);
1034     return new wxCairoPathData( GetRenderer() ,pathcontext);
1035 }
1036
1037
1038 void* wxCairoPathData::GetNativePath() const
1039 {
1040     return cairo_copy_path(m_pathContext) ;
1041 }
1042
1043 void wxCairoPathData::UnGetNativePath(void *p) const
1044 {
1045     cairo_path_destroy((cairo_path_t*)p);
1046 }
1047
1048 //
1049 // The Primitives
1050 //
1051
1052 void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
1053 {
1054     cairo_move_to(m_pathContext,x,y);
1055 }
1056
1057 void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
1058 {
1059     cairo_line_to(m_pathContext,x,y);
1060 }
1061
1062 void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
1063 {
1064     cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
1065     cairo_append_path(m_pathContext, p);
1066     UnGetNativePath(p);
1067 }
1068
1069 void wxCairoPathData::CloseSubpath()
1070 {
1071     cairo_close_path(m_pathContext);
1072 }
1073
1074 void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1075 {
1076     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
1077 }
1078
1079 // gets the last point of the current path, (0,0) if not yet set
1080 void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1081 {
1082     double dx,dy;
1083     cairo_get_current_point(m_pathContext,&dx,&dy);
1084     if (x)
1085         *x = dx;
1086     if (y)
1087         *y = dy;
1088 }
1089
1090 void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
1091 {
1092     // as clockwise means positive in our system (y pointing downwards)
1093     // TODO make this interpretation dependent of the
1094     // real device trans
1095     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
1096         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
1097     else
1098         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
1099 }
1100
1101 // transforms each point of this path by the matrix
1102 void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
1103 {
1104     // as we don't have a true path object, we have to apply the inverse
1105     // matrix to the context
1106     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
1107     cairo_matrix_invert( &m );
1108     cairo_transform(m_pathContext,&m);
1109 }
1110
1111 // gets the bounding box enclosing all points (possibly including control points)
1112 void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1113 {
1114     double x1,y1,x2,y2;
1115
1116     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
1117     if ( x2 < x1 )
1118     {
1119         *x = x2;
1120         *w = x1-x2;
1121     }
1122     else
1123     {
1124         *x = x1;
1125         *w = x2-x1;
1126     }
1127
1128     if( y2 < y1 )
1129     {
1130         *y = y2;
1131         *h = y1-y2;
1132     }
1133     else
1134     {
1135         *y = y1;
1136         *h = y2-y1;
1137     }
1138 }
1139
1140 bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
1141 {
1142     cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1143     return cairo_in_fill( m_pathContext, x, y) != 0;
1144 }
1145
1146 //-----------------------------------------------------------------------------
1147 // wxCairoMatrixData implementation
1148 //-----------------------------------------------------------------------------
1149
1150 wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
1151     : wxGraphicsMatrixData(renderer)
1152 {
1153     if ( matrix )
1154         m_matrix = *matrix;
1155 }
1156
1157 wxCairoMatrixData::~wxCairoMatrixData()
1158 {
1159     // nothing to do
1160 }
1161
1162 wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
1163 {
1164     return new wxCairoMatrixData(GetRenderer(),&m_matrix);
1165 }
1166
1167 // concatenates the matrix
1168 void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
1169 {
1170     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
1171 }
1172
1173 // sets the matrix to the respective values
1174 void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1175                         wxDouble tx, wxDouble ty)
1176 {
1177     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
1178 }
1179
1180 // gets the component valuess of the matrix
1181 void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
1182                             wxDouble* d, wxDouble* tx, wxDouble* ty) const
1183 {
1184     if (a)  *a = m_matrix.xx;
1185     if (b)  *b = m_matrix.yx;
1186     if (c)  *c = m_matrix.xy;
1187     if (d)  *d = m_matrix.yy;
1188     if (tx) *tx= m_matrix.x0;
1189     if (ty) *ty= m_matrix.y0;
1190 }
1191
1192 // makes this the inverse matrix
1193 void wxCairoMatrixData::Invert()
1194 {
1195     cairo_matrix_invert( &m_matrix );
1196 }
1197
1198 // returns true if the elements of the transformation matrix are equal ?
1199 bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1200 {
1201     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
1202     return (
1203         m_matrix.xx == tm->xx &&
1204         m_matrix.yx == tm->yx &&
1205         m_matrix.xy == tm->xy &&
1206         m_matrix.yy == tm->yy &&
1207         m_matrix.x0 == tm->x0 &&
1208         m_matrix.y0 == tm->y0 ) ;
1209 }
1210
1211 // return true if this is the identity matrix
1212 bool wxCairoMatrixData::IsIdentity() const
1213 {
1214     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
1215         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
1216 }
1217
1218 //
1219 // transformation
1220 //
1221
1222 // add the translation to this matrix
1223 void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
1224 {
1225     cairo_matrix_translate( &m_matrix, dx, dy) ;
1226 }
1227
1228 // add the scale to this matrix
1229 void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1230 {
1231     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
1232 }
1233
1234 // add the rotation to this matrix (radians)
1235 void wxCairoMatrixData::Rotate( wxDouble angle )
1236 {
1237     cairo_matrix_rotate( &m_matrix, angle) ;
1238 }
1239
1240 //
1241 // apply the transforms
1242 //
1243
1244 // applies that matrix to the point
1245 void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1246 {
1247     double lx = *x, ly = *y ;
1248     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
1249     *x = lx;
1250     *y = ly;
1251 }
1252
1253 // applies the matrix except for translations
1254 void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1255 {
1256     double lx = *dx, ly = *dy ;
1257     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
1258     *dx = lx;
1259     *dy = ly;
1260 }
1261
1262 // returns the native representation
1263 void * wxCairoMatrixData::GetNativeMatrix() const
1264 {
1265     return (void*) &m_matrix;
1266 }
1267
1268 // ----------------------------------------------------------------------------
1269 // wxCairoBitmap implementation
1270 // ----------------------------------------------------------------------------
1271
1272 int wxCairoBitmapData::InitBuffer(int width, int height, cairo_format_t format)
1273 {
1274     wxUnusedVar(format); // Only really unused with Cairo < 1.6.
1275
1276     // Determine the stride: use cairo_format_stride_for_width() if available
1277     // but fall back to 4*width for the earlier versions as this is what that
1278     // function always returns, even in latest Cairo, anyhow.
1279     int stride;
1280 #if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 6, 0)
1281     if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 6, 0) )
1282     {
1283         stride = cairo_format_stride_for_width(format, width);
1284
1285         // All our code would totally break if stride were not a multiple of 4
1286         // so ensure this is the case.
1287         if ( stride % 4 )
1288         {
1289             wxFAIL_MSG("Unexpected Cairo image surface stride.");
1290
1291             stride += 4 - stride % 4;
1292         }
1293     }
1294     else
1295 #endif
1296         stride = 4*width;
1297
1298     m_width = width;
1299     m_height = height;
1300     m_buffer = new unsigned char[height*stride];
1301
1302     return stride;
1303 }
1304
1305 void wxCairoBitmapData::InitSurface(cairo_format_t format, int stride)
1306 {
1307     m_surface = cairo_image_surface_create_for_data(
1308                             m_buffer, format, m_width, m_height, stride);
1309     m_pattern = cairo_pattern_create_for_surface(m_surface);
1310 }
1311
1312 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
1313     wxGraphicsBitmapData( renderer )
1314 {
1315     m_surface = bitmap;
1316     m_pattern = cairo_pattern_create_for_surface(m_surface);
1317 }
1318
1319 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsBitmapData( renderer )
1320 {
1321     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
1322
1323 #ifdef wxHAS_RAW_BITMAP
1324     // Create a surface object and copy the bitmap pixel data to it.  if the
1325     // image has alpha (or a mask represented as alpha) then we'll use a
1326     // different format and iterator than if it doesn't...
1327     cairo_format_t bufferFormat = bmp.GetDepth() == 32
1328 #if defined(__WXGTK__) && !defined(__WXGTK3__)
1329                                             || bmp.GetMask()
1330 #endif
1331                                         ? CAIRO_FORMAT_ARGB32
1332                                         : CAIRO_FORMAT_RGB24;
1333
1334     int stride = InitBuffer(bmp.GetWidth(), bmp.GetHeight(), bufferFormat);
1335
1336     wxBitmap bmpSource = bmp;  // we need a non-const instance
1337     wxUint32* data = (wxUint32*)m_buffer;
1338
1339     if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
1340     {
1341         // use the bitmap's alpha
1342         wxAlphaPixelData
1343             pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
1344         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1345
1346         wxAlphaPixelData::Iterator p(pixData);
1347         for (int y=0; y<m_height; y++)
1348         {
1349             wxAlphaPixelData::Iterator rowStart = p;
1350             wxUint32* const rowStartDst = data;
1351             for (int x=0; x<m_width; x++)
1352             {
1353                 // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
1354                 // with alpha in the upper 8 bits, then red, then green, then
1355                 // blue. The 32-bit quantities are stored native-endian.
1356                 // Pre-multiplied alpha is used.
1357                 unsigned char alpha = p.Alpha();
1358                 if (alpha == 0)
1359                     *data = 0;
1360                 else
1361                     *data = ( alpha                      << 24
1362                               | (p.Red() * alpha/255)    << 16
1363                               | (p.Green() * alpha/255)  <<  8
1364                               | (p.Blue() * alpha/255) );
1365                 ++data;
1366                 ++p;
1367             }
1368
1369             data = rowStartDst + stride / 4;
1370             p = rowStart;
1371             p.OffsetY(pixData, 1);
1372         }
1373     }
1374     else  // no alpha
1375     {
1376         wxNativePixelData
1377             pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
1378         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1379
1380         wxNativePixelData::Iterator p(pixData);
1381         for (int y=0; y<m_height; y++)
1382         {
1383             wxNativePixelData::Iterator rowStart = p;
1384             wxUint32* const rowStartDst = data;
1385             for (int x=0; x<m_width; x++)
1386             {
1387                 // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
1388                 // the upper 8 bits unused. Red, Green, and Blue are stored in
1389                 // the remaining 24 bits in that order.  The 32-bit quantities
1390                 // are stored native-endian.
1391                 *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
1392                 ++data;
1393                 ++p;
1394             }
1395
1396             data = rowStartDst + stride / 4;
1397             p = rowStart;
1398             p.OffsetY(pixData, 1);
1399         }
1400     }
1401 #if defined(__WXMSW__) || defined(__WXGTK3__)
1402     // if there is a mask, set the alpha bytes in the target buffer to
1403     // fully transparent or fully opaque
1404     if (bmpSource.GetMask())
1405     {
1406         wxBitmap bmpMask = bmpSource.GetMask()->GetBitmap();
1407         bufferFormat = CAIRO_FORMAT_ARGB32;
1408         data = (wxUint32*)m_buffer;
1409         wxNativePixelData
1410             pixData(bmpMask, wxPoint(0, 0), wxSize(m_width, m_height));
1411         wxCHECK_RET( pixData, wxT("Failed to gain raw access to mask data."));
1412
1413         wxNativePixelData::Iterator p(pixData);
1414         for (int y=0; y<m_height; y++)
1415         {
1416             wxNativePixelData::Iterator rowStart = p;
1417             wxUint32* const rowStartDst = data;
1418             for (int x=0; x<m_width; x++)
1419             {
1420                 if (p.Red()+p.Green()+p.Blue() == 0)
1421                     *data = 0;
1422                 else
1423                     *data = (wxALPHA_OPAQUE << 24) | (*data & 0x00FFFFFF);
1424                 ++data;
1425                 ++p;
1426             }
1427
1428             data = rowStartDst + stride / 4;
1429             p = rowStart;
1430             p.OffsetY(pixData, 1);
1431         }
1432     }
1433 #endif
1434
1435     InitSurface(bufferFormat, stride);
1436 #endif // wxHAS_RAW_BITMAP
1437 }
1438
1439 #if wxUSE_IMAGE
1440
1441 // Helper functions for dealing with alpha pre-multiplication.
1442 namespace
1443 {
1444
1445 inline unsigned char Premultiply(unsigned char alpha, unsigned char data)
1446 {
1447     return alpha ? (data * alpha)/0xff : data;
1448 }
1449
1450 inline unsigned char Unpremultiply(unsigned char alpha, unsigned char data)
1451 {
1452     return alpha ? (data * 0xff)/alpha : data;
1453 }
1454
1455 } // anonymous namespace
1456
1457 wxCairoBitmapData::wxCairoBitmapData(wxGraphicsRenderer* renderer,
1458                                      const wxImage& image)
1459     : wxGraphicsBitmapData(renderer)
1460 {
1461     const cairo_format_t bufferFormat = image.HasAlpha()
1462                                             ? CAIRO_FORMAT_ARGB32
1463                                             : CAIRO_FORMAT_RGB24;
1464
1465     int stride = InitBuffer(image.GetWidth(), image.GetHeight(), bufferFormat);
1466
1467     // Copy wxImage data into the buffer. Notice that we work with wxUint32
1468     // values and not bytes becase Cairo always works with buffers in native
1469     // endianness.
1470     wxUint32* dst = reinterpret_cast<wxUint32*>(m_buffer);
1471     const unsigned char* src = image.GetData();
1472
1473     if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
1474     {
1475         const unsigned char* alpha = image.GetAlpha();
1476
1477         for ( int y = 0; y < m_height; y++ )
1478         {
1479             wxUint32* const rowStartDst = dst;
1480
1481             for ( int x = 0; x < m_width; x++ )
1482             {
1483                 const unsigned char a = *alpha++;
1484
1485                 *dst++ = a                      << 24 |
1486                          Premultiply(a, src[0]) << 16 |
1487                          Premultiply(a, src[1]) <<  8 |
1488                          Premultiply(a, src[2]);
1489                 src += 3;
1490             }
1491
1492             dst = rowStartDst + stride / 4;
1493         }
1494     }
1495     else // RGB
1496     {
1497         for ( int y = 0; y < m_height; y++ )
1498         {
1499             wxUint32* const rowStartDst = dst;
1500
1501             for ( int x = 0; x < m_width; x++ )
1502             {
1503                 *dst++ = src[0] << 16 |
1504                          src[1] <<  8 |
1505                          src[2];
1506                 src += 3;
1507             }
1508
1509             dst = rowStartDst + stride / 4;
1510         }
1511     }
1512
1513     InitSurface(bufferFormat, stride);
1514 }
1515
1516 wxImage wxCairoBitmapData::ConvertToImage() const
1517 {
1518     wxImage image(m_width, m_height, false /* don't clear */);
1519
1520     // Get the surface type and format.
1521     wxCHECK_MSG( cairo_surface_get_type(m_surface) == CAIRO_SURFACE_TYPE_IMAGE,
1522                  wxNullImage,
1523                  wxS("Can't convert non-image surface to image.") );
1524
1525     switch ( cairo_image_surface_get_format(m_surface) )
1526     {
1527         case CAIRO_FORMAT_ARGB32:
1528             image.SetAlpha();
1529             break;
1530
1531         case CAIRO_FORMAT_RGB24:
1532             // Nothing to do, we don't use alpha by default.
1533             break;
1534
1535         case CAIRO_FORMAT_A8:
1536         case CAIRO_FORMAT_A1:
1537             wxFAIL_MSG(wxS("Unsupported Cairo image surface type."));
1538             return wxNullImage;
1539
1540         default:
1541             wxFAIL_MSG(wxS("Unknown Cairo image surface type."));
1542             return wxNullImage;
1543     }
1544
1545     // Prepare for copying data.
1546     const wxUint32* src = (wxUint32*)cairo_image_surface_get_data(m_surface);
1547     wxCHECK_MSG( src, wxNullImage, wxS("Failed to get Cairo surface data.") );
1548
1549     int stride = cairo_image_surface_get_stride(m_surface);
1550     wxCHECK_MSG( stride > 0, wxNullImage,
1551                  wxS("Failed to get Cairo surface stride.") );
1552
1553     // As we work with wxUint32 pointers and not char ones, we need to adjust
1554     // the stride accordingly. This should be lossless as the stride must be a
1555     // multiple of pixel size.
1556     wxASSERT_MSG( !(stride % sizeof(wxUint32)), wxS("Unexpected stride.") );
1557     stride /= sizeof(wxUint32);
1558
1559     unsigned char* dst = image.GetData();
1560     unsigned char *alpha = image.GetAlpha();
1561     if ( alpha )
1562     {
1563         // We need to also copy alpha and undo the pre-multiplication as Cairo
1564         // stores pre-multiplied values in this format while wxImage does not.
1565         for ( int y = 0; y < m_height; y++ )
1566         {
1567             const wxUint32* const rowStart = src;
1568             for ( int x = 0; x < m_width; x++ )
1569             {
1570                 const wxUint32 argb = *src++;
1571
1572                 *alpha++ = (argb & 0xff000000) >> 24;
1573
1574                 // Copy the RGB data undoing the pre-multiplication.
1575                 *dst++ = Unpremultiply(*alpha, (argb & 0x00ff0000) >> 16);
1576                 *dst++ = Unpremultiply(*alpha, (argb & 0x0000ff00) >>  8);
1577                 *dst++ = Unpremultiply(*alpha, (argb & 0x000000ff));
1578             }
1579
1580             src = rowStart + stride;
1581         }
1582     }
1583     else // RGB
1584     {
1585         // Things are pretty simple in this case, just copy RGB bytes.
1586         for ( int y = 0; y < m_height; y++ )
1587         {
1588             const wxUint32* const rowStart = src;
1589             for ( int x = 0; x < m_width; x++ )
1590             {
1591                 const wxUint32 argb = *src++;
1592
1593                 *dst++ = (argb & 0x00ff0000) >> 16;
1594                 *dst++ = (argb & 0x0000ff00) >>  8;
1595                 *dst++ = (argb & 0x000000ff);
1596             }
1597
1598             src = rowStart + stride;
1599         }
1600     }
1601
1602     return image;
1603 }
1604
1605 #endif // wxUSE_IMAGE
1606
1607 wxCairoBitmapData::~wxCairoBitmapData()
1608 {
1609     if (m_pattern)
1610         cairo_pattern_destroy(m_pattern);
1611
1612     if (m_surface)
1613         cairo_surface_destroy(m_surface);
1614
1615     delete [] m_buffer;
1616 }
1617
1618 //-----------------------------------------------------------------------------
1619 // wxCairoContext implementation
1620 //-----------------------------------------------------------------------------
1621
1622 class wxCairoOffsetHelper
1623 {
1624 public :
1625     wxCairoOffsetHelper( cairo_t* ctx , bool offset )
1626     {
1627         m_ctx = ctx;
1628         m_offset = offset;
1629         if ( m_offset )
1630              cairo_translate( m_ctx, 0.5, 0.5 );
1631     }
1632     ~wxCairoOffsetHelper( )
1633     {
1634         if ( m_offset )
1635             cairo_translate( m_ctx, -0.5, -0.5 );
1636     }
1637 public :
1638     cairo_t* m_ctx;
1639     bool m_offset;
1640 } ;
1641
1642 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
1643 : wxGraphicsContext(renderer)
1644 {
1645 #ifdef __WXMSW__
1646     // wxMSW contexts always use MM_ANISOTROPIC, which messes up
1647     // text rendering when printing using Cairo. Switch it to MM_TEXT
1648     // map mode to avoid this problem.
1649     HDC hdc = (HDC)dc.GetHDC();
1650     ::SetMapMode(hdc, MM_TEXT);
1651     m_mswSurface = cairo_win32_printing_surface_create(hdc);
1652     Init( cairo_create(m_mswSurface) );
1653 #endif
1654
1655 #ifdef __WXGTK20__
1656     const wxDCImpl *impl = dc.GetImpl();
1657     Init( (cairo_t*) impl->GetCairoContext() );
1658 #endif
1659     wxSize sz = dc.GetSize();
1660     m_width = sz.x;
1661     m_height = sz.y;
1662
1663     wxPoint org = dc.GetDeviceOrigin();
1664     cairo_translate( m_context, org.x, org.y );
1665
1666     double sx,sy;
1667     dc.GetUserScale( &sx, &sy );
1668
1669 // TODO: Determine if these fixes are needed on other platforms too.
1670 // On MSW, without this the printer context will not respect wxDC SetMapMode calls.
1671 // For example, using dc.SetMapMode(wxMM_POINTS) can let us share printer and screen
1672 // drawing code
1673 #ifdef __WXMSW__
1674     double lsx,lsy;
1675     dc.GetLogicalScale( &lsx, &lsy );
1676     sx *= lsx;
1677     sy *= lsy;
1678 #endif
1679     cairo_scale( m_context, sx, sy );
1680
1681     org = dc.GetLogicalOrigin();
1682     cairo_translate( m_context, -org.x, -org.y );
1683 }
1684
1685 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
1686 : wxGraphicsContext(renderer)
1687 {
1688     int width, height;
1689     dc.GetSize( &width, &height );
1690     m_width = width;
1691     m_height = height;
1692
1693     m_enableOffset = true;
1694
1695 #ifdef __WXMSW__
1696     m_mswSurface = cairo_win32_surface_create((HDC)dc.GetHDC());
1697     Init( cairo_create(m_mswSurface) );
1698 #endif
1699
1700 #ifdef __WXGTK3__
1701     cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
1702     if (cr)
1703         Init(cr);
1704 #elif defined __WXGTK20__
1705     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1706     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1707
1708 #if 0
1709     wxGraphicsMatrix matrix = CreateMatrix();
1710
1711     wxPoint org = dc.GetDeviceOrigin();
1712     matrix.Translate( org.x, org.y );
1713
1714     org = dc.GetLogicalOrigin();
1715     matrix.Translate( -org.x, -org.y );
1716
1717     double sx,sy;
1718     dc.GetUserScale( &sx, &sy );
1719     matrix.Scale( sx, sy );
1720
1721     ConcatTransform( matrix );
1722 #endif
1723 #endif
1724
1725 #ifdef __WXMAC__
1726     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1727     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1728     Init( cairo_create( surface ) );
1729     cairo_surface_destroy( surface );
1730 #endif
1731 }
1732
1733 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
1734 : wxGraphicsContext(renderer)
1735 {
1736     int width, height;
1737     dc.GetSize( &width, &height );
1738     m_width = width;
1739     m_height = height;
1740
1741     m_enableOffset = true;
1742
1743 #ifdef __WXMSW__
1744
1745     HDC hdc = (HDC)dc.GetHDC();
1746
1747     HBITMAP bitmap = (HBITMAP)GetCurrentObject(hdc, OBJ_BITMAP);
1748
1749     BITMAP info;
1750     bool hasBitmap = false;
1751
1752     // cairo_win32_surface_create creates a 24-bit bitmap,
1753     // so if we have alpha, we need to create a 32-bit surface instead.
1754     if (!GetObject(bitmap, sizeof(info), &info) || info.bmBitsPixel < 32)
1755         m_mswSurface = cairo_win32_surface_create(hdc);
1756     else {
1757         hasBitmap = true;
1758         m_mswSurface = cairo_image_surface_create_for_data((unsigned char*)info.bmBits,
1759                                                CAIRO_FORMAT_ARGB32,
1760                                                info.bmWidth,
1761                                                info.bmHeight,
1762                                                info.bmWidthBytes);
1763     }
1764
1765     Init( cairo_create(m_mswSurface) );
1766     // If we've created a image surface, we need to flip the Y axis so that
1767     // all drawing will appear right side up.
1768     if (hasBitmap) {
1769         cairo_matrix_t matrix;
1770         cairo_matrix_init(&matrix, 1.0, 0.0, 0.0, -1.0, 0.0, height);
1771         cairo_set_matrix(m_context, &matrix);
1772     }
1773 #endif
1774
1775 #ifdef __WXGTK3__
1776     cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
1777     if (cr)
1778         Init(cr);
1779 #elif defined __WXGTK20__
1780     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1781     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1782
1783 #if 0
1784     wxGraphicsMatrix matrix = CreateMatrix();
1785
1786     wxPoint org = dc.GetDeviceOrigin();
1787     matrix.Translate( org.x, org.y );
1788
1789     org = dc.GetLogicalOrigin();
1790     matrix.Translate( -org.x, -org.y );
1791
1792     double sx,sy;
1793     dc.GetUserScale( &sx, &sy );
1794     matrix.Scale( sx, sy );
1795
1796     ConcatTransform( matrix );
1797 #endif
1798 #endif
1799
1800 #ifdef __WXMAC__
1801     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1802     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1803     Init( cairo_create( surface ) );
1804     cairo_surface_destroy( surface );
1805 #endif
1806 }
1807
1808 #ifdef __WXGTK20__
1809 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window )
1810 : wxGraphicsContext(renderer)
1811 {
1812     Init( gdk_cairo_create( window ) );
1813
1814 #ifdef __WXGTK3__
1815     m_width = gdk_window_get_width(window);
1816     m_height = gdk_window_get_height(window);
1817 #else
1818     int width, height;
1819     gdk_drawable_get_size(window, &width, &height);
1820     m_width = width;
1821     m_height = height;
1822 #endif
1823 }
1824 #endif
1825
1826 #ifdef __WXMSW__
1827 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
1828 : wxGraphicsContext(renderer)
1829 {
1830     m_mswSurface = cairo_win32_surface_create(handle);
1831     Init( cairo_create(m_mswSurface) );
1832     m_width =
1833     m_height = 0;
1834 }
1835 #endif
1836
1837
1838 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1839 : wxGraphicsContext(renderer)
1840 {
1841     Init( context );
1842     m_width =
1843     m_height = 0;
1844 }
1845
1846 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1847     : wxGraphicsContext(renderer)
1848 #ifdef __WXMSW__
1849     , m_mswWindowHDC(GetHwndOf(window))
1850 #endif
1851 {
1852     m_enableOffset = true;
1853 #ifdef __WXGTK__
1854     // something along these lines (copied from dcclient)
1855
1856     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1857     // code should still be able to create wxClientDCs for them, so we will
1858     // use the parent window here then.
1859     if (window->m_wxwindow == NULL)
1860     {
1861         window = window->GetParent();
1862     }
1863
1864     wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
1865
1866     Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
1867
1868     wxSize sz = window->GetSize();
1869     m_width = sz.x;
1870     m_height = sz.y;
1871 #endif
1872
1873 #ifdef __WXMSW__
1874     m_mswSurface = cairo_win32_surface_create((HDC)m_mswWindowHDC);
1875     Init(cairo_create(m_mswSurface));
1876 #endif
1877
1878 }
1879
1880 wxCairoContext::wxCairoContext(wxGraphicsRenderer* renderer) :
1881     wxGraphicsContext(renderer)
1882 {
1883     m_context = NULL;
1884 }
1885
1886 wxCairoContext::~wxCairoContext()
1887 {
1888     if ( m_context )
1889     {
1890         PopState();
1891         PopState();
1892         cairo_destroy(m_context);
1893     }
1894 #ifdef __WXMSW__
1895     if ( m_mswSurface )
1896         cairo_surface_destroy(m_mswSurface);
1897 #endif
1898 }
1899
1900 void wxCairoContext::Init(cairo_t *context)
1901 {
1902     m_context = context ;
1903     PushState();
1904     PushState();
1905 }
1906
1907
1908 void wxCairoContext::Clip( const wxRegion& region )
1909 {
1910     // Create a path with all the rectangles in the region
1911     wxGraphicsPath path = GetRenderer()->CreatePath();
1912     wxRegionIterator ri(region);
1913     while (ri)
1914     {
1915         path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
1916         ++ri;
1917     }
1918
1919     // Put it in the context
1920     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1921     cairo_append_path(m_context, cp);
1922
1923     // clip to that path
1924     cairo_clip(m_context);
1925     path.UnGetNativePath(cp);
1926 }
1927
1928 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1929 {
1930     // Create a path with this rectangle
1931     wxGraphicsPath path = GetRenderer()->CreatePath();
1932     path.AddRectangle(x,y,w,h);
1933
1934     // Put it in the context
1935     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1936     cairo_append_path(m_context, cp);
1937
1938     // clip to that path
1939     cairo_clip(m_context);
1940     path.UnGetNativePath(cp);
1941 }
1942
1943 void wxCairoContext::ResetClip()
1944 {
1945     cairo_reset_clip(m_context);
1946 }
1947
1948
1949 void wxCairoContext::StrokePath( const wxGraphicsPath& path )
1950 {
1951     if ( !m_pen.IsNull() )
1952     {
1953         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1954         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1955         cairo_append_path(m_context,cp);
1956         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1957         cairo_stroke(m_context);
1958         path.UnGetNativePath(cp);
1959     }
1960 }
1961
1962 void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1963 {
1964     if ( !m_brush.IsNull() )
1965     {
1966         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1967         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1968         cairo_append_path(m_context,cp);
1969         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1970         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1971         cairo_fill(m_context);
1972         path.UnGetNativePath(cp);
1973     }
1974 }
1975
1976 void wxCairoContext::Rotate( wxDouble angle )
1977 {
1978     cairo_rotate(m_context,angle);
1979 }
1980
1981 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1982 {
1983     cairo_translate(m_context,dx,dy);
1984 }
1985
1986 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1987 {
1988     cairo_scale(m_context,xScale,yScale);
1989 }
1990
1991 // concatenates this transform with the current transform of this context
1992 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1993 {
1994     cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
1995 }
1996
1997 // sets the transform of this context
1998 void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
1999 {
2000     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
2001 }
2002
2003 // gets the matrix of this context
2004 wxGraphicsMatrix wxCairoContext::GetTransform() const
2005 {
2006     wxGraphicsMatrix matrix = CreateMatrix();
2007     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
2008     return matrix;
2009 }
2010
2011
2012
2013 void wxCairoContext::PushState()
2014 {
2015     cairo_save(m_context);
2016 }
2017
2018 void wxCairoContext::PopState()
2019 {
2020     cairo_restore(m_context);
2021 }
2022
2023 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2024 {
2025     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
2026     DrawBitmap(bitmap, x, y, w, h);
2027
2028 }
2029
2030 void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2031 {
2032     PushState();
2033
2034     // In case we're scaling the image by using a width and height different
2035     // than the bitmap's size create a pattern transformation on the surface and
2036     // draw the transformed pattern.
2037     wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
2038     cairo_pattern_t* pattern = data->GetCairoPattern();
2039     wxSize size = data->GetSize();
2040
2041     wxDouble scaleX = w / size.GetWidth();
2042     wxDouble scaleY = h / size.GetHeight();
2043
2044     // prepare to draw the image
2045     cairo_translate(m_context, x, y);
2046     cairo_scale(m_context, scaleX, scaleY);
2047     cairo_set_source(m_context, pattern);
2048     // use the original size here since the context is scaled already...
2049     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
2050     // fill the rectangle using the pattern
2051     cairo_fill(m_context);
2052
2053     PopState();
2054 }
2055
2056 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2057 {
2058     // An icon is a bitmap on wxGTK, so do this the easy way.  When we want to
2059     // start using the Cairo backend on other platforms then we may need to
2060     // fiddle with this...
2061     DrawBitmap(icon, x, y, w, h);
2062 }
2063
2064
2065 void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
2066 {
2067     wxCHECK_RET( !m_font.IsNull(),
2068                  wxT("wxCairoContext::DrawText - no valid font set") );
2069
2070     if ( str.empty())
2071         return;
2072
2073     const wxCharBuffer data = str.utf8_str();
2074     if ( !data )
2075         return;
2076
2077     if ( ((wxCairoFontData*)m_font.GetRefData())->Apply(this) )
2078     {
2079 #ifdef __WXGTK__
2080         PangoLayout *layout = pango_cairo_create_layout (m_context);
2081         const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
2082         pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
2083         pango_layout_set_text(layout, data, data.length());
2084         font.GTKSetPangoAttrs(layout);
2085
2086         cairo_move_to(m_context, x, y);
2087         pango_cairo_show_layout (m_context, layout);
2088
2089         g_object_unref (layout);
2090
2091         // Don't use Cairo text API, we already did everything.
2092         return;
2093 #endif
2094     }
2095
2096     // Cairo's x,y for drawing text is at the baseline, so we need to adjust
2097     // the position we move to by the ascent.
2098     cairo_font_extents_t fe;
2099     cairo_font_extents(m_context, &fe);
2100     cairo_move_to(m_context, x, y+fe.ascent);
2101
2102     cairo_show_text(m_context, data);
2103 }
2104
2105 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2106                                     wxDouble *descent, wxDouble *externalLeading ) const
2107 {
2108     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
2109
2110     if ( width )
2111         *width = 0;
2112     if ( height )
2113         *height = 0;
2114     if ( descent )
2115         *descent = 0;
2116     if ( externalLeading )
2117         *externalLeading = 0;
2118
2119     if ( str.empty())
2120         return;
2121
2122     if ( ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this) )
2123     {
2124 #ifdef __WXGTK__
2125         int w, h;
2126
2127         PangoLayout *layout = pango_cairo_create_layout (m_context);
2128         const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
2129         pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
2130         const wxCharBuffer data = str.utf8_str();
2131         if ( !data )
2132         {
2133             return;
2134         }
2135         pango_layout_set_text(layout, data, data.length());
2136         pango_layout_get_pixel_size (layout, &w, &h);
2137         if ( width )
2138             *width = w;
2139         if ( height )
2140             *height = h;
2141         if (descent)
2142         {
2143             PangoLayoutIter *iter = pango_layout_get_iter(layout);
2144             int baseline = pango_layout_iter_get_baseline(iter);
2145             pango_layout_iter_free(iter);
2146             *descent = h - PANGO_PIXELS(baseline);
2147         }
2148         g_object_unref (layout);
2149         return;
2150 #endif
2151     }
2152
2153     if (width)
2154     {
2155         const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
2156         cairo_text_extents_t te;
2157         cairo_text_extents(m_context, buf, &te);
2158         *width = te.width;
2159     }
2160
2161     if (height || descent || externalLeading)
2162     {
2163         cairo_font_extents_t fe;
2164         cairo_font_extents(m_context, &fe);
2165
2166         // some backends have negative descents
2167
2168         if ( fe.descent < 0 )
2169             fe.descent = -fe.descent;
2170
2171         if ( fe.height < (fe.ascent + fe.descent ) )
2172         {
2173             // some backends are broken re height ... (eg currently ATSUI)
2174             fe.height = fe.ascent + fe.descent;
2175         }
2176
2177         if (height)
2178             *height = fe.height;
2179         if ( descent )
2180             *descent = fe.descent;
2181         if ( externalLeading )
2182             *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
2183     }
2184 }
2185
2186 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2187 {
2188     widths.Empty();
2189     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
2190 #ifdef __WXGTK__
2191     const wxCharBuffer data = text.utf8_str();
2192     int w = 0;
2193     if (data.length())
2194     {
2195         PangoLayout* layout = pango_cairo_create_layout(m_context);
2196         const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
2197         pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
2198         pango_layout_set_text(layout, data, data.length());
2199         PangoLayoutIter* iter = pango_layout_get_iter(layout);
2200         PangoRectangle rect;
2201         do {
2202             pango_layout_iter_get_cluster_extents(iter, NULL, &rect);
2203             w += rect.width;
2204             widths.Add(PANGO_PIXELS(w));
2205         } while (pango_layout_iter_next_cluster(iter));
2206         pango_layout_iter_free(iter);
2207         g_object_unref(layout);
2208     }
2209     size_t i = widths.GetCount();
2210     const size_t len = text.length();
2211     while (i++ < len)
2212         widths.Add(PANGO_PIXELS(w));
2213 #else
2214     // TODO
2215 #endif
2216 }
2217
2218 void * wxCairoContext::GetNativeContext()
2219 {
2220     return m_context;
2221 }
2222
2223 bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
2224 {
2225     if (m_antialias == antialias)
2226         return true;
2227
2228     m_antialias = antialias;
2229
2230     cairo_antialias_t antialiasMode;
2231     switch (antialias)
2232     {
2233         case wxANTIALIAS_DEFAULT:
2234             antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
2235             break;
2236         case wxANTIALIAS_NONE:
2237             antialiasMode = CAIRO_ANTIALIAS_NONE;
2238             break;
2239         default:
2240             return false;
2241     }
2242     cairo_set_antialias(m_context, antialiasMode);
2243     return true;
2244 }
2245
2246 bool wxCairoContext::SetInterpolationQuality(wxInterpolationQuality WXUNUSED(interpolation))
2247 {
2248     // placeholder
2249     return false;
2250 }
2251
2252 bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
2253 {
2254     if ( m_composition == op )
2255         return true;
2256
2257     m_composition = op;
2258     cairo_operator_t cop;
2259     switch (op)
2260     {
2261         case wxCOMPOSITION_CLEAR:
2262             cop = CAIRO_OPERATOR_CLEAR;
2263             break;
2264         case wxCOMPOSITION_SOURCE:
2265             cop = CAIRO_OPERATOR_SOURCE;
2266             break;
2267         case wxCOMPOSITION_OVER:
2268             cop = CAIRO_OPERATOR_OVER;
2269             break;
2270         case wxCOMPOSITION_IN:
2271             cop = CAIRO_OPERATOR_IN;
2272             break;
2273         case wxCOMPOSITION_OUT:
2274             cop = CAIRO_OPERATOR_OUT;
2275             break;
2276         case wxCOMPOSITION_ATOP:
2277             cop = CAIRO_OPERATOR_ATOP;
2278             break;
2279         case wxCOMPOSITION_DEST:
2280             cop = CAIRO_OPERATOR_DEST;
2281             break;
2282         case wxCOMPOSITION_DEST_OVER:
2283             cop = CAIRO_OPERATOR_DEST_OVER;
2284             break;
2285         case wxCOMPOSITION_DEST_IN:
2286             cop = CAIRO_OPERATOR_DEST_IN;
2287             break;
2288         case wxCOMPOSITION_DEST_OUT:
2289             cop = CAIRO_OPERATOR_DEST_OUT;
2290             break;
2291         case wxCOMPOSITION_DEST_ATOP:
2292             cop = CAIRO_OPERATOR_DEST_ATOP;
2293             break;
2294         case wxCOMPOSITION_XOR:
2295             cop = CAIRO_OPERATOR_XOR;
2296             break;
2297         case wxCOMPOSITION_ADD:
2298             cop = CAIRO_OPERATOR_ADD;
2299             break;
2300         default:
2301             return false;
2302     }
2303     cairo_set_operator(m_context, cop);
2304     return true;
2305 }
2306
2307 void wxCairoContext::BeginLayer(wxDouble opacity)
2308 {
2309     m_layerOpacities.push_back(opacity);
2310     cairo_push_group(m_context);
2311 }
2312
2313 void wxCairoContext::EndLayer()
2314 {
2315     float opacity = m_layerOpacities.back();
2316     m_layerOpacities.pop_back();
2317     cairo_pop_group_to_source(m_context);
2318     cairo_paint_with_alpha(m_context,opacity);
2319 }
2320
2321 //-----------------------------------------------------------------------------
2322 // wxCairoRenderer declaration
2323 //-----------------------------------------------------------------------------
2324
2325 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
2326 {
2327 public :
2328     wxCairoRenderer() {}
2329
2330     virtual ~wxCairoRenderer() {}
2331
2332     // Context
2333
2334     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2335     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2336     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
2337
2338     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2339
2340     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2341 #if wxUSE_IMAGE
2342     virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
2343 #endif // wxUSE_IMAGE
2344
2345     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2346
2347     virtual wxGraphicsContext * CreateMeasuringContext();
2348 #ifdef __WXMSW__
2349 #if wxUSE_ENH_METAFILE
2350     virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
2351 #endif
2352 #endif
2353     // Path
2354
2355     virtual wxGraphicsPath CreatePath();
2356
2357     // Matrix
2358
2359     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2360         wxDouble tx=0.0, wxDouble ty=0.0);
2361
2362
2363     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2364
2365     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2366
2367     virtual wxGraphicsBrush
2368     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2369                               wxDouble x2, wxDouble y2,
2370                               const wxGraphicsGradientStops& stops);
2371
2372     virtual wxGraphicsBrush
2373     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2374                               wxDouble xc, wxDouble yc,
2375                               wxDouble radius,
2376                               const wxGraphicsGradientStops& stops);
2377
2378     // sets the font
2379     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2380     virtual wxGraphicsFont CreateFont(double sizeInPixels,
2381                                       const wxString& facename,
2382                                       int flags = wxFONTFLAG_DEFAULT,
2383                                       const wxColour& col = *wxBLACK);
2384
2385     // create a native bitmap representation
2386     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
2387 #if wxUSE_IMAGE
2388     virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
2389     virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp);
2390 #endif // wxUSE_IMAGE
2391
2392     // create a graphics bitmap from a native bitmap
2393     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
2394
2395     // create a subimage from a native image representation
2396     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
2397
2398     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
2399 } ;
2400
2401 //-----------------------------------------------------------------------------
2402 // wxCairoRenderer implementation
2403 //-----------------------------------------------------------------------------
2404
2405 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
2406
2407 static wxCairoRenderer gs_cairoGraphicsRenderer;
2408
2409 #ifdef __WXGTK__
2410     #define ENSURE_LOADED_OR_RETURN(returnOnFail)
2411 #else
2412     #define ENSURE_LOADED_OR_RETURN(returnOnFail)  \
2413         if (!wxCairoInit())                        \
2414             return returnOnFail
2415 #endif
2416
2417 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
2418 {
2419     ENSURE_LOADED_OR_RETURN(NULL);
2420     return new wxCairoContext(this,dc);
2421 }
2422
2423 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
2424 {
2425     ENSURE_LOADED_OR_RETURN(NULL);
2426     return new wxCairoContext(this,dc);
2427 }
2428
2429 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
2430 {
2431     ENSURE_LOADED_OR_RETURN(NULL);
2432     return new wxCairoContext(this, dc);
2433 }
2434
2435 #ifdef __WXMSW__
2436 #if wxUSE_ENH_METAFILE
2437 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxEnhMetaFileDC& WXUNUSED(dc) )
2438 {
2439     return NULL;
2440 }
2441 #endif
2442 #endif
2443
2444 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
2445 {
2446     ENSURE_LOADED_OR_RETURN(NULL);
2447 #ifdef __WXMSW__
2448     return new wxCairoContext(this,(HDC)context);
2449 #else
2450     return new wxCairoContext(this,(cairo_t*)context);
2451 #endif
2452 }
2453
2454
2455 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
2456 {
2457 #ifdef __WXGTK__
2458     return new wxCairoContext(this, static_cast<GdkWindow*>(window));
2459 #else
2460     wxUnusedVar(window);
2461     return NULL;
2462 #endif
2463 }
2464
2465 #if wxUSE_IMAGE
2466 wxGraphicsContext * wxCairoRenderer::CreateContextFromImage(wxImage& image)
2467 {
2468     ENSURE_LOADED_OR_RETURN(NULL);
2469     return new wxCairoImageContext(this, image);
2470 }
2471 #endif // wxUSE_IMAGE
2472
2473 wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
2474 {
2475 #ifdef __WXGTK__
2476     return CreateContextFromNativeWindow(gdk_get_default_root_window());
2477 #else
2478     return NULL;
2479     // TODO
2480 #endif
2481 }
2482
2483 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
2484 {
2485     ENSURE_LOADED_OR_RETURN(NULL);
2486     return new wxCairoContext(this, window );
2487 }
2488
2489 // Path
2490
2491 wxGraphicsPath wxCairoRenderer::CreatePath()
2492 {
2493     wxGraphicsPath path;
2494     ENSURE_LOADED_OR_RETURN(path);
2495     path.SetRefData( new wxCairoPathData(this) );
2496     return path;
2497 }
2498
2499
2500 // Matrix
2501
2502 wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2503                                                 wxDouble tx, wxDouble ty)
2504
2505 {
2506     wxGraphicsMatrix m;
2507     ENSURE_LOADED_OR_RETURN(m);
2508     wxCairoMatrixData* data = new wxCairoMatrixData( this );
2509     data->Set( a,b,c,d,tx,ty ) ;
2510     m.SetRefData(data);
2511     return m;
2512 }
2513
2514 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
2515 {
2516     wxGraphicsPen p;
2517     ENSURE_LOADED_OR_RETURN(p);
2518     if (pen.IsOk() && pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
2519     {
2520         p.SetRefData(new wxCairoPenData( this, pen ));
2521     }
2522     return p;
2523 }
2524
2525 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
2526 {
2527     wxGraphicsBrush p;
2528     ENSURE_LOADED_OR_RETURN(p);
2529     if (brush.IsOk() && brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
2530     {
2531         p.SetRefData(new wxCairoBrushData( this, brush ));
2532     }
2533     return p;
2534 }
2535
2536 wxGraphicsBrush
2537 wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2538                                            wxDouble x2, wxDouble y2,
2539                                            const wxGraphicsGradientStops& stops)
2540 {
2541     wxGraphicsBrush p;
2542     ENSURE_LOADED_OR_RETURN(p);
2543     wxCairoBrushData* d = new wxCairoBrushData( this );
2544     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
2545     p.SetRefData(d);
2546     return p;
2547 }
2548
2549 wxGraphicsBrush
2550 wxCairoRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2551                                            wxDouble xc, wxDouble yc, wxDouble r,
2552                                            const wxGraphicsGradientStops& stops)
2553 {
2554     wxGraphicsBrush p;
2555     ENSURE_LOADED_OR_RETURN(p);
2556     wxCairoBrushData* d = new wxCairoBrushData( this );
2557     d->CreateRadialGradientBrush(xo, yo, xc, yc, r, stops);
2558     p.SetRefData(d);
2559     return p;
2560 }
2561
2562 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
2563 {
2564     wxGraphicsFont p;
2565     ENSURE_LOADED_OR_RETURN(p);
2566     if ( font.IsOk() )
2567     {
2568         p.SetRefData(new wxCairoFontData( this , font, col ));
2569     }
2570     return p;
2571 }
2572
2573 wxGraphicsFont
2574 wxCairoRenderer::CreateFont(double sizeInPixels,
2575                             const wxString& facename,
2576                             int flags,
2577                             const wxColour& col)
2578 {
2579     wxGraphicsFont font;
2580     ENSURE_LOADED_OR_RETURN(font);
2581     font.SetRefData(new wxCairoFontData(this, sizeInPixels, facename, flags, col));
2582     return font;
2583 }
2584
2585 wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
2586 {
2587     wxGraphicsBitmap p;
2588     ENSURE_LOADED_OR_RETURN(p);
2589     if ( bmp.IsOk() )
2590     {
2591         p.SetRefData(new wxCairoBitmapData( this , bmp ));
2592     }
2593     return p;
2594 }
2595
2596 #if wxUSE_IMAGE
2597
2598 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromImage(const wxImage& image)
2599 {
2600     wxGraphicsBitmap bmp;
2601
2602     ENSURE_LOADED_OR_RETURN(bmp);
2603
2604     if ( image.IsOk() )
2605     {
2606         bmp.SetRefData(new wxCairoBitmapData(this, image));
2607     }
2608
2609     return bmp;
2610 }
2611
2612 wxImage wxCairoRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
2613 {
2614     wxImage image;
2615     ENSURE_LOADED_OR_RETURN(image);
2616
2617     const wxCairoBitmapData* const
2618         data = static_cast<wxCairoBitmapData*>(bmp.GetGraphicsData());
2619     if (data)
2620         image = data->ConvertToImage();
2621
2622     return image;
2623 }
2624
2625 #endif // wxUSE_IMAGE
2626
2627
2628 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
2629 {
2630     wxGraphicsBitmap p;
2631     ENSURE_LOADED_OR_RETURN(p);
2632     if ( bitmap != NULL )
2633     {
2634         p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
2635     }
2636     return p;
2637 }
2638
2639 wxGraphicsBitmap
2640 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
2641                                  wxDouble WXUNUSED(x),
2642                                  wxDouble WXUNUSED(y),
2643                                  wxDouble WXUNUSED(w),
2644                                  wxDouble WXUNUSED(h))
2645 {
2646     wxGraphicsBitmap p;
2647     wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
2648     return p;
2649 }
2650
2651 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2652 {
2653     return &gs_cairoGraphicsRenderer;
2654 }
2655
2656 #else // !wxUSE_CAIRO
2657
2658 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2659 {
2660     return NULL;
2661 }
2662
2663 #endif  // wxUSE_CAIRO/!wxUSE_CAIRO
2664
2665 // MSW and OS X have their own native default renderers, but the other ports
2666 // use Cairo by default
2667 #if !(defined(__WXMSW__) || defined(__WXOSX__))
2668 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2669 {
2670     return GetCairoRenderer();
2671 }
2672 #endif // !(__WXMSW__ || __WXOSX__)
2673
2674 #endif // wxUSE_GRAPHICS_CONTEXT