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 #include "wx/dc.h"
  15
  16 #ifdef __BORLANDC__
  17 #pragma hdrstop
  18 #endif
  19
  20 #ifndef WX_PRECOMP
  21 #include "wx/image.h"
  22 #include "wx/window.h"
  23 #include "wx/dc.h"
  24 #include "wx/utils.h"
  25 #include "wx/dialog.h"
  26 #include "wx/app.h"
  27 #include "wx/bitmap.h"
  28 #include "wx/dcmemory.h"
  29 #include "wx/log.h"
  30 #include "wx/icon.h"
  31 #include "wx/dcprint.h"
  32 #include "wx/module.h"
  33 #endif
  34
  35 #ifdef __WXGTK__
  36 #include "wx/gtk/win_gtk.h"
  37 #endif
  38
  39 #include "wx/graphics.h"
  40
  41 #if wxUSE_GRAPHICS_CONTEXT
  42
  43 #include <vector>
  44
  45 using namespace std;
  46
  47 //-----------------------------------------------------------------------------
  48 // constants
  49 //-----------------------------------------------------------------------------
  50
  51 const double RAD2DEG = 180.0 / M_PI;
  52
  53 //-----------------------------------------------------------------------------
  54 // Local functions
  55 //-----------------------------------------------------------------------------
  56
  57 static inline double dmin(double a, double b)
  58 {
  59     return a < b ? a : b;
  60 }
  61 static inline double dmax(double a, double b)
  62 {
  63     return a > b ? a : b;
  64 }
  65
  66 static inline double DegToRad(double deg)
  67 {
  68     return (deg * M_PI) / 180.0;
  69 }
  70 static inline double RadToDeg(double deg)
  71 {
  72     return (deg * 180.0) / M_PI;
  73 }
  74
  75 //-----------------------------------------------------------------------------
  76 // device context implementation
  77 //
  78 // more and more of the dc functionality should be implemented by calling
  79 // the appropricate wxCairoContext, but we will have to do that step by step
  80 // also coordinate conversions should be moved to native matrix ops
  81 //-----------------------------------------------------------------------------
  82
  83 // we always stock two context states, one at entry, to be able to preserve the
  84 // state we were called with, the other one after changing to HI Graphics orientation
  85 // (this one is used for getting back clippings etc)
  86
  87 //-----------------------------------------------------------------------------
  88 // wxGraphicsPath implementation
  89 //-----------------------------------------------------------------------------
  90
  91 // TODO remove this dependency (gdiplus needs the macros)
  92
  93 #ifndef max
  94 #define max(a,b)            (((a) > (b)) ? (a) : (b))
  95 #endif
  96
  97 #ifndef min
  98 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  99 #endif
 100
 101 #include <cairo.h>
 102 #ifdef __WXGTK__
 103 #include <gtk/gtk.h>
 104 #endif
 105
 106 class WXDLLIMPEXP_CORE wxCairoPath : public wxGraphicsPath
 107 {
 108 public :
 109     wxCairoPath();
 110     wxCairoPath(wxGraphicsRenderer* renderer, cairo_t* pathcontext = NULL);
 111     ~wxCairoPath();
 112
 113     virtual wxGraphicsPath *Clone() const;
 114
 115     //
 116     // These are the path primitives from which everything else can be constructed
 117     //
 118
 119     // begins a new subpath at (x,y)
 120     virtual void MoveToPoint( wxDouble x, wxDouble y );
 121
 122     // adds a straight line from the current point to (x,y)
 123     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 124
 125     // adds a cubic Bezier curve from the current point, using two control points and an end point
 126     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 127
 128
 129     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 130     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 131
 132     // gets the last point of the current path, (0,0) if not yet set
 133     virtual void GetCurrentPoint( wxDouble& x, wxDouble&y) ;
 134
 135     // adds another path
 136     virtual void AddPath( const wxGraphicsPath* path );
 137
 138     // closes the current sub-path
 139     virtual void CloseSubpath();
 140
 141     //
 142     // These are convenience functions which - if not available natively will be assembled
 143     // using the primitives from above
 144     //
 145
 146     /*
 147
 148     // appends a rectangle as a new closed subpath
 149     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 150     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 151     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 152
 153     // 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)
 154     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 155     */
 156
 157     // returns the native path
 158     virtual void * GetNativePath() const ;
 159
 160     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 161     virtual void UnGetNativePath(void *p) ;
 162
 163     // transforms each point of this path by the matrix
 164     virtual void Transform( wxGraphicsMatrix* matrix ) ;
 165
 166     // gets the bounding box enclosing all points (possibly including control points)
 167     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) ;
 168
 169     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxWINDING_RULE) ;
 170
 171 private :
 172     cairo_t* m_pathContext;
 173     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoPath)
 174 };
 175
 176 class WXDLLIMPEXP_CORE wxCairoMatrix : public wxGraphicsMatrix
 177 {
 178 public :
 179     wxCairoMatrix() ;
 180
 181     wxCairoMatrix(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
 182     virtual ~wxCairoMatrix() ;
 183
 184     virtual wxGraphicsMatrix *Clone() const ;
 185
 186     // concatenates the matrix
 187     virtual void Concat( const wxGraphicsMatrix *t );
 188
 189     // copies the passed in matrix
 190     virtual void Copy( const wxGraphicsMatrix *t );
 191
 192     // sets the matrix to the respective values
 193     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 194         wxDouble tx=0.0, wxDouble ty=0.0);
 195
 196     // makes this the inverse matrix
 197     virtual void Invert();
 198
 199     // returns true if the elements of the transformation matrix are equal ?
 200     virtual bool IsEqual( const wxGraphicsMatrix* t) const ;
 201
 202     // return true if this is the identity matrix
 203     virtual bool IsIdentity();
 204
 205     //
 206     // transformation
 207     //
 208
 209     // add the translation to this matrix
 210     virtual void Translate( wxDouble dx , wxDouble dy );
 211
 212     // add the scale to this matrix
 213     virtual void Scale( wxDouble xScale , wxDouble yScale );
 214
 215     // add the rotation to this matrix (radians)
 216     virtual void Rotate( wxDouble angle );
 217
 218     //
 219     // apply the transforms
 220     //
 221
 222     // applies that matrix to the point
 223     virtual void TransformPoint( wxDouble *x, wxDouble *y );
 224
 225     // applies the matrix except for translations
 226     virtual void TransformDistance( wxDouble *dx, wxDouble *dy );
 227
 228     // returns the native representation
 229     virtual void * GetNativeMatrix() const;
 230 private:
 231     cairo_matrix_t m_matrix ;
 232
 233     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoMatrix)
 234 } ;
 235
 236 class WXDLLIMPEXP_CORE wxCairoPen : public wxGraphicsPen
 237 {
 238 public:
 239     wxCairoPen();
 240     wxCairoPen( wxGraphicsRenderer* renderer, const wxPen &pen );
 241     ~wxCairoPen();
 242
 243     void Init();
 244
 245     virtual void Apply( wxGraphicsContext* context );
 246     virtual wxDouble GetWidth() { return m_width; }
 247
 248 private :
 249     double m_width;
 250
 251     double m_red;
 252     double m_green;
 253     double m_blue;
 254     double m_alpha;
 255
 256     cairo_line_cap_t m_cap;
 257     cairo_line_join_t m_join;
 258
 259     int m_count;
 260     const double *m_lengths;
 261     double *m_userLengths;
 262
 263     wxPen m_pen;
 264     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoPen)
 265 };
 266
 267 class WXDLLIMPEXP_CORE wxCairoBrush : public wxGraphicsBrush
 268 {
 269 public:
 270     wxCairoBrush();
 271     wxCairoBrush( wxGraphicsRenderer* renderer );
 272     wxCairoBrush( wxGraphicsRenderer* renderer, const wxBrush &brush );
 273     ~wxCairoBrush ();
 274
 275     virtual void Apply( wxGraphicsContext* context );
 276     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 277         const wxColour&c1, const wxColour&c2 );
 278     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 279         const wxColour &oColor, const wxColour &cColor );
 280
 281 protected:
 282     virtual void Init();
 283
 284 private :
 285     double m_red;
 286     double m_green;
 287     double m_blue;
 288     double m_alpha;
 289
 290     cairo_pattern_t* m_brushPattern;
 291
 292     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoBrush)
 293 };
 294
 295 class wxCairoFont : public wxGraphicsFont
 296 {
 297 public:
 298     wxCairoFont();
 299     wxCairoFont( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 300     ~wxCairoFont();
 301
 302     virtual void Apply( wxGraphicsContext* context );
 303 private :
 304     wxCharBuffer m_fontName;
 305     double m_size;
 306     cairo_font_slant_t m_slant;
 307     cairo_font_weight_t m_weight;
 308     double m_red;
 309     double m_green;
 310     double m_blue;
 311     double m_alpha;
 312     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoFont)
 313 };
 314
 315 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 316 {
 317     DECLARE_NO_COPY_CLASS(wxCairoContext)
 318
 319 public:
 320     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 321 #ifdef __WXGTK__
 322     wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable );
 323 #endif
 324     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 325     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 326     wxCairoContext();
 327     virtual ~wxCairoContext();
 328
 329     virtual void Clip( const wxRegion &region );
 330
 331     // clips drawings to the rect
 332     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 333
 334     // resets the clipping to original extent
 335     virtual void ResetClip();
 336
 337     virtual void * GetNativeContext();
 338
 339     virtual void StrokePath( const wxGraphicsPath *p );
 340     virtual void FillPath( const wxGraphicsPath *p , int fillStyle = wxWINDING_RULE );
 341
 342     virtual void Translate( wxDouble dx , wxDouble dy );
 343     virtual void Scale( wxDouble xScale , wxDouble yScale );
 344     virtual void Rotate( wxDouble angle );
 345
 346     // concatenates this transform with the current transform of this context
 347     virtual void ConcatTransform( const wxGraphicsMatrix* matrix );
 348
 349     // sets the transform of this context
 350     virtual void SetTransform( const wxGraphicsMatrix* matrix );
 351
 352     // gets the matrix of this context
 353     virtual void GetTransform( wxGraphicsMatrix* matrix );
 354
 355     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 356     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 357     virtual void PushState();
 358     virtual void PopState();
 359
 360     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y);
 361     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 362                                 wxDouble *descent, wxDouble *externalLeading ) const;
 363     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 364
 365 private:
 366     cairo_t* m_context;
 367 };
 368
 369 //-----------------------------------------------------------------------------
 370 // wxCairoPen implementation
 371 //-----------------------------------------------------------------------------
 372
 373 IMPLEMENT_DYNAMIC_CLASS(wxCairoPen,wxGraphicsPen)
 374
 375 wxCairoPen::wxCairoPen() : wxGraphicsPen(NULL)
 376 {
 377     wxLogDebug(wxT("Illegal Constructor called"));
 378 }
 379
 380 wxCairoPen::~wxCairoPen()
 381 {
 382     delete[] m_userLengths;
 383 }
 384
 385 void wxCairoPen::Init()
 386 {
 387     m_lengths = NULL;
 388     m_userLengths = NULL;
 389     m_width = 0;
 390     m_count = 0;
 391 }
 392
 393 wxCairoPen::wxCairoPen( wxGraphicsRenderer* renderer, const wxPen &pen )
 394 : wxGraphicsPen(renderer)
 395 {
 396     Init();
 397     m_width = pen.GetWidth();
 398     if (m_width <= 0.0)
 399         m_width = 0.1;
 400
 401     m_red = m_pen.GetColour().Red()/255.0;
 402     m_green = m_pen.GetColour().Green()/255.0;
 403     m_blue = m_pen.GetColour().Blue()/255.0;
 404     m_alpha = m_pen.GetColour().Alpha()/255.0;
 405
 406     switch ( m_pen.GetCap() )
 407     {
 408     case wxCAP_ROUND :
 409         m_cap = CAIRO_LINE_CAP_ROUND;
 410         break;
 411
 412     case wxCAP_PROJECTING :
 413         m_cap = CAIRO_LINE_CAP_SQUARE;
 414         break;
 415
 416     case wxCAP_BUTT :
 417         m_cap = CAIRO_LINE_CAP_BUTT;
 418         break;
 419
 420     default :
 421         m_cap = CAIRO_LINE_CAP_BUTT;
 422         break;
 423     }
 424
 425     switch ( m_pen.GetJoin() )
 426     {
 427     case wxJOIN_BEVEL :
 428         m_join = CAIRO_LINE_JOIN_BEVEL;
 429         break;
 430
 431     case wxJOIN_MITER :
 432         m_join = CAIRO_LINE_JOIN_MITER;
 433         break;
 434
 435     case wxJOIN_ROUND :
 436         m_join = CAIRO_LINE_JOIN_ROUND;
 437         break;
 438
 439     default :
 440         m_join = CAIRO_LINE_JOIN_MITER;
 441         break;
 442     }
 443
 444     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 445     const double dotted[] =
 446     {
 447         dashUnit , dashUnit + 2.0
 448     };
 449     static const double short_dashed[] =
 450     {
 451         9.0 , 6.0
 452     };
 453     static const double dashed[] =
 454     {
 455         19.0 , 9.0
 456     };
 457     static const double dotted_dashed[] =
 458     {
 459         9.0 , 6.0 , 3.0 , 3.0
 460     };
 461
 462     switch ( m_pen.GetStyle() )
 463     {
 464     case wxSOLID :
 465         break;
 466
 467     case wxDOT :
 468         m_count = WXSIZEOF(dotted);
 469         m_userLengths = new double[ m_count ] ;
 470         memcpy( m_userLengths, dotted, sizeof(dotted) );
 471         m_lengths = m_userLengths;
 472         break;
 473
 474     case wxLONG_DASH :
 475         m_lengths = dotted ;
 476         m_count = WXSIZEOF(dashed);
 477         break;
 478
 479     case wxSHORT_DASH :
 480         m_lengths = dotted ;
 481         m_count = WXSIZEOF(short_dashed);
 482         break;
 483
 484     case wxDOT_DASH :
 485         m_lengths = dotted ;
 486         m_count = WXSIZEOF(dotted_dashed);
 487         break;
 488
 489     case wxUSER_DASH :
 490         {
 491             wxDash *wxdashes ;
 492             m_count = m_pen.GetDashes( &wxdashes ) ;
 493             if ((wxdashes != NULL) && (m_count > 0))
 494             {
 495                 m_userLengths = new double[m_count] ;
 496                 for ( int i = 0 ; i < m_count ; ++i )
 497                 {
 498                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 499
 500                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 501                         m_userLengths[i] = dashUnit + 2.0 ;
 502                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 503                         m_userLengths[i] = dashUnit ;
 504                 }
 505             }
 506             m_lengths = m_userLengths ;
 507         }
 508         break;
 509     case wxSTIPPLE :
 510         {
 511             /*
 512             wxBitmap* bmp = pen.GetStipple();
 513             if ( bmp && bmp->Ok() )
 514             {
 515             wxDELETE( m_penImage );
 516             wxDELETE( m_penBrush );
 517             m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 518             m_penBrush = new TextureBrush(m_penImage);
 519             m_pen->SetBrush( m_penBrush );
 520             }
 521             */
 522         }
 523         break;
 524     default :
 525         if ( m_pen.GetStyle() >= wxFIRST_HATCH && m_pen.GetStyle() <= wxLAST_HATCH )
 526         {
 527             /*
 528             wxDELETE( m_penBrush );
 529             HatchStyle style = HatchStyleHorizontal;
 530             switch( pen.GetStyle() )
 531             {
 532             case wxBDIAGONAL_HATCH :
 533             style = HatchStyleBackwardDiagonal;
 534             break ;
 535             case wxCROSSDIAG_HATCH :
 536             style = HatchStyleDiagonalCross;
 537             break ;
 538             case wxFDIAGONAL_HATCH :
 539             style = HatchStyleForwardDiagonal;
 540             break ;
 541             case wxCROSS_HATCH :
 542             style = HatchStyleCross;
 543             break ;
 544             case wxHORIZONTAL_HATCH :
 545             style = HatchStyleHorizontal;
 546             break ;
 547             case wxVERTICAL_HATCH :
 548             style = HatchStyleVertical;
 549             break ;
 550
 551             }
 552             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 553             pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
 554             m_pen->SetBrush( m_penBrush )
 555             */
 556         }
 557         break;
 558     }
 559 }
 560
 561 void wxCairoPen::Apply( wxGraphicsContext* context )
 562 {
 563     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 564     cairo_set_line_width(ctext,m_width);
 565     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 566     cairo_set_line_cap(ctext,m_cap);
 567     cairo_set_line_join(ctext,m_join);
 568     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 569 }
 570
 571 //-----------------------------------------------------------------------------
 572 // wxCairoBrush implementation
 573 //-----------------------------------------------------------------------------
 574
 575 IMPLEMENT_DYNAMIC_CLASS(wxCairoBrush,wxGraphicsBrush)
 576
 577 wxCairoBrush::wxCairoBrush() : wxGraphicsBrush( NULL )
 578 {
 579     wxLogDebug(wxT("Illegal Constructor called"));
 580 }
 581
 582 wxCairoBrush::wxCairoBrush( wxGraphicsRenderer* renderer ) : wxGraphicsBrush( renderer )
 583 {
 584     Init();
 585 }
 586
 587 wxCairoBrush::wxCairoBrush( wxGraphicsRenderer* renderer, const wxBrush &brush )
 588 : wxGraphicsBrush(renderer)
 589 {
 590     m_red = brush.GetColour().Red()/255.0;
 591     m_green = brush.GetColour().Green()/255.0;
 592     m_blue = brush.GetColour().Blue()/255.0;
 593     m_alpha = brush.GetColour().Alpha()/255.0;
 594     /*
 595     if ( brush.GetStyle() == wxSOLID)
 596     {
 597     m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 598     brush.GetColour().Green() , brush.GetColour().Blue() ) );
 599     }
 600     else if ( brush.IsHatch() )
 601     {
 602     HatchStyle style = HatchStyleHorizontal;
 603     switch( brush.GetStyle() )
 604     {
 605     case wxBDIAGONAL_HATCH :
 606     style = HatchStyleBackwardDiagonal;
 607     break ;
 608     case wxCROSSDIAG_HATCH :
 609     style = HatchStyleDiagonalCross;
 610     break ;
 611     case wxFDIAGONAL_HATCH :
 612     style = HatchStyleForwardDiagonal;
 613     break ;
 614     case wxCROSS_HATCH :
 615     style = HatchStyleCross;
 616     break ;
 617     case wxHORIZONTAL_HATCH :
 618     style = HatchStyleHorizontal;
 619     break ;
 620     case wxVERTICAL_HATCH :
 621     style = HatchStyleVertical;
 622     break ;
 623
 624     }
 625     m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 626     brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
 627     }
 628     else
 629     {
 630     wxBitmap* bmp = brush.GetStipple();
 631     if ( bmp && bmp->Ok() )
 632     {
 633     wxDELETE( m_brushImage );
 634     m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 635     m_brush = new TextureBrush(m_brushImage);
 636     }
 637     }
 638     */
 639 }
 640
 641 wxCairoBrush::~wxCairoBrush ()
 642 {
 643     if (m_brushPattern)
 644         cairo_pattern_destroy(m_brushPattern);
 645 }
 646
 647 void wxCairoBrush::Apply( wxGraphicsContext* context )
 648 {
 649     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 650     if ( m_brushPattern )
 651     {
 652         cairo_set_source(ctext,m_brushPattern);
 653     }
 654     else
 655     {
 656         cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 657     }
 658 }
 659
 660 void wxCairoBrush::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 661         const wxColour&c1, const wxColour&c2 )
 662 {
 663     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 664     cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,c1.Red()/255.0,
 665         c1.Green()/255.0, c1.Blue()/255.0,c1.Alpha()/255.0);
 666     cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,c2.Red()/255.0,
 667         c2.Green()/255.0, c2.Blue()/255.0,c2.Alpha()/255.0);
 668     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
 669 }
 670
 671 void wxCairoBrush::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 672         const wxColour &oColor, const wxColour &cColor )
 673 {
 674     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 675     cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,oColor.Red()/255.0,
 676         oColor.Green()/255.0, oColor.Blue()/255.0,oColor.Alpha()/255.0);
 677     cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,cColor.Red()/255.0,
 678         cColor.Green()/255.0, cColor.Blue()/255.0,cColor.Alpha()/255.0);
 679     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
 680 }
 681
 682 void wxCairoBrush::Init()
 683 {
 684     m_brushPattern = NULL;
 685 }
 686
 687 //-----------------------------------------------------------------------------
 688 // wxCairoFont implementation
 689 //-----------------------------------------------------------------------------
 690
 691 wxCairoFont::wxCairoFont() : wxGraphicsFont(NULL)
 692 {
 693     wxLogDebug(wxT("Illegal Constructor called"));
 694 }
 695
 696 wxCairoFont::wxCairoFont( wxGraphicsRenderer* renderer, const wxFont &font,
 697                          const wxColour& col ) : wxGraphicsFont(renderer)
 698 {
 699     m_red = col.Red()/255.0;
 700     m_green = col.Green()/255.0;
 701     m_blue = col.Blue()/255.0;
 702     m_alpha = col.Alpha()/255.0;
 703
 704     m_size = font.GetPointSize();
 705     m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
 706     m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
 707     m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
 708 }
 709
 710 wxCairoFont::~wxCairoFont()
 711 {
 712 }
 713
 714 void wxCairoFont::Apply( wxGraphicsContext* context )
 715 {
 716     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 717     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 718     cairo_select_font_face(ctext,m_fontName,m_slant,m_weight);
 719     cairo_set_font_size(ctext,m_size);
 720     // TODO UNDERLINE
 721     // TODO FIX SIZE
 722 }
 723
 724 //-----------------------------------------------------------------------------
 725 // wxCairoPath implementation
 726 //-----------------------------------------------------------------------------
 727
 728 wxCairoPath::wxCairoPath() : wxGraphicsPath(NULL)
 729 {
 730     wxLogDebug(wxT("Illegal Constructor called"));
 731 }
 732
 733 wxCairoPath::wxCairoPath( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
 734     : wxGraphicsPath(renderer)
 735 {
 736     if (pathcontext)
 737     {
 738         m_pathContext = pathcontext;
 739     }
 740     else
 741     {
 742         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 743         m_pathContext = cairo_create(surface);
 744         cairo_surface_destroy (surface);
 745     }
 746 }
 747
 748 wxCairoPath::~wxCairoPath()
 749 {
 750     cairo_destroy(m_pathContext);
 751 }
 752
 753 wxGraphicsPath *wxCairoPath::Clone() const
 754 {
 755     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 756     cairo_t* pathcontext = cairo_create(surface);
 757     cairo_surface_destroy (surface);
 758
 759     cairo_path_t* path = cairo_copy_path(m_pathContext);
 760     cairo_append_path(pathcontext, path);
 761     cairo_path_destroy(path);
 762     return new wxCairoPath( GetRenderer() ,pathcontext);
 763 }
 764
 765
 766 void* wxCairoPath::GetNativePath() const
 767 {
 768     return cairo_copy_path(m_pathContext) ;
 769 }
 770
 771 void wxCairoPath::UnGetNativePath(void *p)
 772 {
 773     cairo_path_destroy((cairo_path_t*)p);
 774 }
 775
 776 //
 777 // The Primitives
 778 //
 779
 780 void wxCairoPath::MoveToPoint( wxDouble x , wxDouble y )
 781 {
 782     cairo_move_to(m_pathContext,x,y);
 783 }
 784
 785 void wxCairoPath::AddLineToPoint( wxDouble x , wxDouble y )
 786 {
 787     cairo_line_to(m_pathContext,x,y);
 788 }
 789
 790 void wxCairoPath::CloseSubpath()
 791 {
 792     cairo_close_path(m_pathContext);
 793 }
 794
 795 void wxCairoPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 796 {
 797     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
 798 }
 799
 800 // gets the last point of the current path, (0,0) if not yet set
 801 void wxCairoPath::GetCurrentPoint( wxDouble& x, wxDouble&y)
 802 {
 803     double dx,dy;
 804     cairo_get_current_point(m_pathContext,&dx,&dy);
 805     x = dx;
 806     y = dy;
 807 }
 808
 809 void wxCairoPath::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 810 {
 811     // as clockwise means positive in our system (y pointing downwards)
 812     // TODO make this interpretation dependent of the
 813     // real device trans
 814     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
 815         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
 816     else
 817         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
 818 }
 819
 820 // transforms each point of this path by the matrix
 821 void wxCairoPath::Transform( wxGraphicsMatrix* matrix )
 822 {
 823     // as we don't have a true path object, we have to apply the inverse
 824     // matrix to the context
 825     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
 826     cairo_matrix_invert( &m );
 827     cairo_transform(m_pathContext,&m);
 828 }
 829
 830 // gets the bounding box enclosing all points (possibly including control points)
 831 void wxCairoPath::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h)
 832 {
 833     double x1,y1,x2,y2;
 834
 835     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
 836     if ( x2 < x1 )
 837     {
 838         *x = x2;
 839         *w = x1-x2;
 840     }
 841     else
 842     {
 843         *x = x1;
 844         *w = x2-x1;
 845     }
 846
 847     if( y2 < y1 )
 848     {
 849         *y = y2;
 850         *h = y1-y2;
 851     }
 852     else
 853     {
 854         *y = y1;
 855         *h = y2-y1;
 856     }
 857 }
 858
 859 bool wxCairoPath::Contains( wxDouble x, wxDouble y, int fillStyle )
 860 {
 861     return cairo_in_stroke( m_pathContext, x, y) != NULL;
 862 }
 863
 864 //-----------------------------------------------------------------------------
 865 // wxCairoMatrix implementation
 866 //-----------------------------------------------------------------------------
 867
 868 IMPLEMENT_DYNAMIC_CLASS(wxCairoMatrix,wxGraphicsMatrix)
 869
 870 wxCairoMatrix::wxCairoMatrix() : wxGraphicsMatrix(NULL)
 871 {
 872     wxLogDebug(wxT("Illegal Constructor called"));
 873 }
 874
 875 wxCairoMatrix::wxCairoMatrix(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
 876     : wxGraphicsMatrix(renderer)
 877 {
 878     if ( matrix )
 879         m_matrix = *matrix;
 880 }
 881
 882 wxCairoMatrix::~wxCairoMatrix()
 883 {
 884     // nothing to do
 885 }
 886
 887 wxGraphicsMatrix *wxCairoMatrix::Clone() const
 888 {
 889     return new wxCairoMatrix(GetRenderer(),&m_matrix);
 890 }
 891
 892 // concatenates the matrix
 893 void wxCairoMatrix::Concat( const wxGraphicsMatrix *t )
 894 {
 895     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
 896 }
 897
 898 // copies the passed in matrix
 899 void wxCairoMatrix::Copy( const wxGraphicsMatrix *t )
 900 {
 901     m_matrix = *((cairo_matrix_t*) t->GetNativeMatrix());
 902 }
 903
 904 // sets the matrix to the respective values
 905 void wxCairoMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 906                         wxDouble tx, wxDouble ty)
 907 {
 908     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
 909 }
 910
 911 // makes this the inverse matrix
 912 void wxCairoMatrix::Invert()
 913 {
 914     cairo_matrix_invert( &m_matrix );
 915 }
 916
 917 // returns true if the elements of the transformation matrix are equal ?
 918 bool wxCairoMatrix::IsEqual( const wxGraphicsMatrix* t) const
 919 {
 920     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
 921     return (
 922         m_matrix.xx == tm->xx &&
 923         m_matrix.yx == tm->yx &&
 924         m_matrix.xy == tm->xy &&
 925         m_matrix.yy == tm->yy &&
 926         m_matrix.x0 == tm->x0 &&
 927         m_matrix.y0 == tm->y0 ) ;
 928 }
 929
 930 // return true if this is the identity matrix
 931 bool wxCairoMatrix::IsIdentity()
 932 {
 933     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
 934         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
 935 }
 936
 937 //
 938 // transformation
 939 //
 940
 941 // add the translation to this matrix
 942 void wxCairoMatrix::Translate( wxDouble dx , wxDouble dy )
 943 {
 944     cairo_matrix_translate( &m_matrix, dx, dy) ;
 945 }
 946
 947 // add the scale to this matrix
 948 void wxCairoMatrix::Scale( wxDouble xScale , wxDouble yScale )
 949 {
 950     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
 951 }
 952
 953 // add the rotation to this matrix (radians)
 954 void wxCairoMatrix::Rotate( wxDouble angle )
 955 {
 956     cairo_matrix_rotate( &m_matrix, angle) ;
 957 }
 958
 959 //
 960 // apply the transforms
 961 //
 962
 963 // applies that matrix to the point
 964 void wxCairoMatrix::TransformPoint( wxDouble *x, wxDouble *y )
 965 {
 966     double lx = *x, ly = *y ;
 967     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
 968     *x = lx;
 969     *y = ly;
 970 }
 971
 972 // applies the matrix except for translations
 973 void wxCairoMatrix::TransformDistance( wxDouble *dx, wxDouble *dy )
 974 {
 975     double lx = *dx, ly = *dy ;
 976     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
 977     *dx = lx;
 978     *dy = ly;
 979 }
 980
 981 // returns the native representation
 982 void * wxCairoMatrix::GetNativeMatrix() const
 983 {
 984     return (void*) &m_matrix;
 985 }
 986
 987 //-----------------------------------------------------------------------------
 988 // wxCairoContext implementation
 989 //-----------------------------------------------------------------------------
 990
 991 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
 992 : wxGraphicsContext(renderer)
 993 {
 994 #ifdef __WXGTK__
 995     m_context = gdk_cairo_create( dc.m_window ) ;
 996 #endif
 997     PushState();
 998     PushState();
 999 }
1000
1001 #ifdef __WXGTK__
1002 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
1003 : wxGraphicsContext(renderer)
1004 {
1005     m_context = gdk_cairo_create( drawable ) ;
1006     PushState();
1007     PushState();
1008 }
1009 #endif
1010
1011 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1012 : wxGraphicsContext(renderer)
1013 {
1014     m_context = context ;
1015     PushState();
1016     PushState();
1017 }
1018
1019 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1020 : wxGraphicsContext(renderer)
1021 {
1022 #ifdef __WXGTK__
1023     // something along these lines (copied from dcclient)
1024
1025     GtkWidget *widget = window->m_wxwindow;
1026
1027     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1028     // code should still be able to create wxClientDCs for them, so we will
1029     // use the parent window here then.
1030     if ( !widget )
1031     {
1032         window = window->GetParent();
1033         widget = window->m_wxwindow;
1034     }
1035
1036     wxASSERT_MSG( widget, wxT("wxCairoContext needs a widget") );
1037
1038     GtkPizza *pizza = GTK_PIZZA( widget );
1039     GdkDrawable* drawable = pizza->bin_window;
1040     m_context = gdk_cairo_create( drawable ) ;
1041 #endif
1042     PushState();
1043     PushState();
1044 }
1045
1046 wxCairoContext::~wxCairoContext()
1047 {
1048     SetPen(NULL);
1049     SetBrush(NULL);
1050     SetFont(NULL);
1051
1052     if ( m_context )
1053     {
1054         PopState();
1055         PopState();
1056         cairo_destroy(m_context);
1057     }
1058 }
1059
1060
1061 void wxCairoContext::Clip( const wxRegion & WXUNUSED(region) )
1062 {
1063 // TODO
1064 }
1065
1066 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1067 {
1068 // TODO
1069 }
1070
1071 void wxCairoContext::ResetClip()
1072 {
1073 // TODO
1074 }
1075
1076
1077 void wxCairoContext::StrokePath( const wxGraphicsPath *path )
1078 {
1079     if ( m_pen )
1080     {
1081         cairo_path_t* cp = (cairo_path_t*) path->GetNativePath() ;
1082         cairo_append_path(m_context,cp);
1083         m_pen->Apply(this);
1084         cairo_stroke(m_context);
1085         wxConstCast(path, wxGraphicsPath)->UnGetNativePath(cp);
1086     }
1087 }
1088
1089 void wxCairoContext::FillPath( const wxGraphicsPath *path , int fillStyle )
1090 {
1091     if ( m_brush )
1092     {
1093         cairo_path_t* cp = (cairo_path_t*) path->GetNativePath() ;
1094         cairo_append_path(m_context,cp);
1095         m_brush->Apply(this);
1096         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1097         cairo_fill(m_context);
1098         wxConstCast(path, wxGraphicsPath)->UnGetNativePath(cp);
1099     }
1100 }
1101
1102 void wxCairoContext::Rotate( wxDouble angle )
1103 {
1104     cairo_rotate(m_context,angle);
1105 }
1106
1107 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1108 {
1109     cairo_translate(m_context,dx,dy);
1110 }
1111
1112 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1113 {
1114     cairo_scale(m_context,xScale,yScale);
1115 }
1116
1117 // concatenates this transform with the current transform of this context
1118 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix* matrix )
1119 {
1120     cairo_transform(m_context,(const cairo_matrix_t *) matrix->GetNativeMatrix());
1121 }
1122
1123 // sets the transform of this context
1124 void wxCairoContext::SetTransform( const wxGraphicsMatrix* matrix )
1125 {
1126     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix->GetNativeMatrix());
1127 }
1128
1129 // gets the matrix of this context
1130 void wxCairoContext::GetTransform( wxGraphicsMatrix* matrix )
1131 {
1132     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix->GetNativeMatrix());
1133 }
1134
1135
1136
1137 void wxCairoContext::PushState()
1138 {
1139     cairo_save(m_context);
1140 }
1141
1142 void wxCairoContext::PopState()
1143 {
1144     cairo_restore(m_context);
1145 }
1146
1147 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1148 {
1149     /*
1150         Bitmap* image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());
1151         m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1152         delete image ;
1153     */
1154 }
1155
1156 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1157 {
1158     /*
1159         Bitmap* image = Bitmap::FromHICON((HICON)icon.GetHICON());
1160         m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1161         delete image ;
1162     */
1163 }
1164
1165
1166 void wxCairoContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1167 {
1168     if ( m_font == NULL || str.IsEmpty())
1169         return ;
1170     cairo_move_to(m_context,x,y);
1171     const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
1172     m_font->Apply(this);
1173     cairo_show_text(m_context,buf);
1174 }
1175
1176 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1177                                     wxDouble *descent, wxDouble *externalLeading ) const
1178 {
1179     // TODO
1180 }
1181
1182 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1183 {
1184     widths.Empty();
1185     widths.Add(0, text.length());
1186
1187     if (text.empty())
1188         return;
1189
1190     // TODO
1191 }
1192
1193 void * wxCairoContext::GetNativeContext()
1194 {
1195     return m_context;
1196 }
1197
1198 //-----------------------------------------------------------------------------
1199 // wxCairoRenderer declaration
1200 //-----------------------------------------------------------------------------
1201
1202 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
1203 {
1204 public :
1205     wxCairoRenderer() {}
1206
1207     virtual ~wxCairoRenderer() {}
1208
1209     // Context
1210
1211     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1212
1213     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1214
1215     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1216
1217     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1218
1219     // Path
1220
1221     virtual wxGraphicsPath * CreatePath();
1222
1223     // Matrix
1224
1225     virtual wxGraphicsMatrix * CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1226         wxDouble tx=0.0, wxDouble ty=0.0);
1227
1228
1229     virtual wxGraphicsPen* CreatePen(const wxPen& pen) ;
1230
1231     virtual wxGraphicsBrush* CreateBrush(const wxBrush& brush ) ;
1232
1233     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1234     virtual wxGraphicsBrush* CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1235         const wxColour&c1, const wxColour&c2) ;
1236
1237     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1238     // with radius r and color cColor
1239     virtual wxGraphicsBrush* CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1240         const wxColour &oColor, const wxColour &cColor) ;
1241
1242     // sets the font
1243     virtual wxGraphicsFont* CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1244
1245 private :
1246     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
1247 } ;
1248
1249 //-----------------------------------------------------------------------------
1250 // wxCairoRenderer implementation
1251 //-----------------------------------------------------------------------------
1252
1253 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
1254
1255 static wxCairoRenderer gs_cairoGraphicsRenderer;
1256
1257 #ifdef __WXGTK__
1258 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1259 {
1260     return &gs_cairoGraphicsRenderer;
1261 }
1262 #endif
1263
1264 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
1265 {
1266     return new wxCairoContext(this,dc);
1267 }
1268
1269 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
1270 {
1271     return new wxCairoContext(this,(cairo_t*)context);
1272 }
1273
1274
1275 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
1276 {
1277 #ifdef __WXGTK__
1278     return new wxCairoContext(this,(GdkDrawable*)window);
1279 #else
1280     return NULL;
1281 #endif
1282 }
1283
1284 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
1285 {
1286     return new wxCairoContext(this, window );
1287 }
1288
1289 // Path
1290
1291 wxGraphicsPath * wxCairoRenderer::CreatePath()
1292 {
1293     return new wxCairoPath( this );
1294 }
1295
1296
1297 // Matrix
1298
1299 wxGraphicsMatrix * wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1300                                                            wxDouble tx, wxDouble ty)
1301
1302 {
1303     wxCairoMatrix* m = new wxCairoMatrix( this );
1304     m->Set( a,b,c,d,tx,ty ) ;
1305     return m;
1306 }
1307
1308 wxGraphicsPen* wxCairoRenderer::CreatePen(const wxPen& pen)
1309 {
1310     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
1311         return NULL;
1312     else
1313         return new wxCairoPen( this, pen );
1314 }
1315
1316 wxGraphicsBrush* wxCairoRenderer::CreateBrush(const wxBrush& brush )
1317 {
1318     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
1319         return NULL;
1320     else
1321         return new wxCairoBrush( this, brush );
1322 }
1323
1324 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1325 wxGraphicsBrush* wxCairoRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1326                                                                       const wxColour&c1, const wxColour&c2)
1327 {
1328     wxCairoBrush* brush = new wxCairoBrush(this);
1329     brush->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
1330     return brush;
1331 }
1332
1333 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1334 // with radius r and color cColor
1335 wxGraphicsBrush* wxCairoRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1336                                                                       const wxColour &oColor, const wxColour &cColor)
1337 {
1338     wxCairoBrush* brush = new wxCairoBrush(this);
1339     brush->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
1340     return brush;
1341 }
1342
1343 // sets the font
1344 wxGraphicsFont* wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
1345 {
1346     if ( font.Ok() )
1347         return new wxCairoFont( this , font, col );
1348     else
1349         return NULL;
1350 }
1351
1352 #endif  // wxUSE_GRAPHICS_CONTEXT