src/generic/graphicc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/graphicc.cpp
   3 // Purpose:     cairo device context class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     2006-10-03
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2006 Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #if wxUSE_GRAPHICS_CONTEXT
  19
  20 #include "wx/graphics.h"
  21
  22 #if wxUSE_CAIRO
  23
  24 // keep cairo.h from defining dllimport as we're defining the symbols inside
  25 // the wx dll in order to load them dynamically.
  26 #define cairo_public
  27
  28 #include "wx/cairo.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/bitmap.h"
  32     #include "wx/icon.h"
  33     #include "wx/dcclient.h"
  34     #include "wx/dcmemory.h"
  35     #include "wx/dcprint.h"
  36     #ifdef __WXGTK__
  37         #include "wx/window.h"
  38     #endif
  39 #endif
  40
  41 #include "wx/private/graphics.h"
  42 #include "wx/rawbmp.h"
  43 #include "wx/vector.h"
  44
  45 using namespace std;
  46
  47 //-----------------------------------------------------------------------------
  48 // device context implementation
  49 //
  50 // more and more of the dc functionality should be implemented by calling
  51 // the appropricate wxCairoContext, but we will have to do that step by step
  52 // also coordinate conversions should be moved to native matrix ops
  53 //-----------------------------------------------------------------------------
  54
  55 // we always stock two context states, one at entry, to be able to preserve the
  56 // state we were called with, the other one after changing to HI Graphics orientation
  57 // (this one is used for getting back clippings etc)
  58
  59 //-----------------------------------------------------------------------------
  60 // wxGraphicsPath implementation
  61 //-----------------------------------------------------------------------------
  62
  63 // TODO remove this dependency (gdiplus needs the macros)
  64
  65 #ifndef max
  66 #define max(a,b)            (((a) > (b)) ? (a) : (b))
  67 #endif
  68
  69 #ifndef min
  70 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  71 #endif
  72
  73 #include <cairo.h>
  74 #ifdef __WXMSW__
  75 #include <cairo-win32.h>
  76 #endif
  77
  78 #ifdef __WXGTK__
  79 #include <gtk/gtk.h>
  80 #include "wx/fontutil.h"
  81 #include "wx/gtk/dc.h"
  82 #endif
  83
  84 #ifdef __WXMSW__
  85 #include <cairo-win32.h>
  86 #endif
  87
  88 #ifdef __WXMAC__
  89 #include "wx/osx/private.h"
  90 #include <cairo-quartz.h>
  91 #include <cairo-atsui.h>
  92 #endif
  93
  94 class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
  95 {
  96 public :
  97     wxCairoPathData(wxGraphicsRenderer* renderer, cairo_t* path = NULL);
  98     ~wxCairoPathData();
  99
 100     virtual wxGraphicsObjectRefData *Clone() const;
 101
 102     //
 103     // These are the path primitives from which everything else can be constructed
 104     //
 105
 106     // begins a new subpath at (x,y)
 107     virtual void MoveToPoint( wxDouble x, wxDouble y );
 108
 109     // adds a straight line from the current point to (x,y)
 110     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 111
 112     // adds a cubic Bezier curve from the current point, using two control points and an end point
 113     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 114
 115
 116     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 117     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 118
 119     // gets the last point of the current path, (0,0) if not yet set
 120     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 121
 122     // adds another path
 123     virtual void AddPath( const wxGraphicsPathData* path );
 124
 125     // closes the current sub-path
 126     virtual void CloseSubpath();
 127
 128     //
 129     // These are convenience functions which - if not available natively will be assembled
 130     // using the primitives from above
 131     //
 132
 133     /*
 134
 135     // appends a rectangle as a new closed subpath
 136     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 137     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 138     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 139
 140     // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
 141     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 142     */
 143
 144     // returns the native path
 145     virtual void * GetNativePath() const ;
 146
 147     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 148     virtual void UnGetNativePath(void *p) const;
 149
 150     // transforms each point of this path by the matrix
 151     virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
 152
 153     // gets the bounding box enclosing all points (possibly including control points)
 154     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
 155
 156     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxWINDING_RULE) const;
 157
 158 private :
 159     cairo_t* m_pathContext;
 160 };
 161
 162 class WXDLLIMPEXP_CORE wxCairoMatrixData : public wxGraphicsMatrixData
 163 {
 164 public :
 165     wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
 166     virtual ~wxCairoMatrixData() ;
 167
 168     virtual wxGraphicsObjectRefData *Clone() const ;
 169
 170     // concatenates the matrix
 171     virtual void Concat( const wxGraphicsMatrixData *t );
 172
 173     // sets the matrix to the respective values
 174     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 175         wxDouble tx=0.0, wxDouble ty=0.0);
 176
 177     // gets the component valuess of the matrix
 178     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 179                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 180
 181     // makes this the inverse matrix
 182     virtual void Invert();
 183
 184     // returns true if the elements of the transformation matrix are equal ?
 185     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 186
 187     // return true if this is the identity matrix
 188     virtual bool IsIdentity() const;
 189
 190     //
 191     // transformation
 192     //
 193
 194     // add the translation to this matrix
 195     virtual void Translate( wxDouble dx , wxDouble dy );
 196
 197     // add the scale to this matrix
 198     virtual void Scale( wxDouble xScale , wxDouble yScale );
 199
 200     // add the rotation to this matrix (radians)
 201     virtual void Rotate( wxDouble angle );
 202
 203     //
 204     // apply the transforms
 205     //
 206
 207     // applies that matrix to the point
 208     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 209
 210     // applies the matrix except for translations
 211     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 212
 213     // returns the native representation
 214     virtual void * GetNativeMatrix() const;
 215 private:
 216     cairo_matrix_t m_matrix ;
 217 } ;
 218
 219 class WXDLLIMPEXP_CORE wxCairoPenData : public wxGraphicsObjectRefData
 220 {
 221 public:
 222     wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 223     ~wxCairoPenData();
 224
 225     void Init();
 226
 227     virtual void Apply( wxGraphicsContext* context );
 228     virtual wxDouble GetWidth() { return m_width; }
 229
 230 private :
 231     double m_width;
 232
 233     double m_red;
 234     double m_green;
 235     double m_blue;
 236     double m_alpha;
 237
 238     cairo_line_cap_t m_cap;
 239     cairo_line_join_t m_join;
 240
 241     int m_count;
 242     const double *m_lengths;
 243     double *m_userLengths;
 244
 245     wxPen m_pen;
 246
 247     wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
 248 };
 249
 250 class WXDLLIMPEXP_CORE wxCairoBrushData : public wxGraphicsObjectRefData
 251 {
 252 public:
 253     wxCairoBrushData( wxGraphicsRenderer* renderer );
 254     wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 255     ~wxCairoBrushData ();
 256
 257     virtual void Apply( wxGraphicsContext* context );
 258
 259     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 260                                    wxDouble x2, wxDouble y2,
 261                                    const wxGraphicsGradientStops& stops);
 262     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 263                                    wxDouble xc, wxDouble yc, wxDouble radius,
 264                                    const wxGraphicsGradientStops& stops);
 265
 266 protected:
 267     virtual void Init();
 268
 269     // common part of Create{Linear,Radial}GradientBrush()
 270     void AddGradientStops(const wxGraphicsGradientStops& stops);
 271
 272 private :
 273     double m_red;
 274     double m_green;
 275     double m_blue;
 276     double m_alpha;
 277
 278     cairo_pattern_t* m_brushPattern;
 279 };
 280
 281 class wxCairoFontData : public wxGraphicsObjectRefData
 282 {
 283 public:
 284     wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 285     ~wxCairoFontData();
 286
 287     virtual void Apply( wxGraphicsContext* context );
 288 #ifdef __WXGTK__
 289     const PangoFontDescription* GetFont() const { return m_font; }
 290     bool GetUnderlined() const { return m_underlined; }
 291 #endif
 292 private :
 293     double m_size;
 294     bool m_underlined;
 295     double m_red;
 296     double m_green;
 297     double m_blue;
 298     double m_alpha;
 299 #ifdef __WXMAC__
 300     cairo_font_face_t *m_font;
 301 #elif defined(__WXGTK__)
 302     PangoFontDescription* m_font;
 303 #else
 304     wxCharBuffer m_fontName;
 305     cairo_font_slant_t m_slant;
 306     cairo_font_weight_t m_weight;
 307 #endif
 308 };
 309
 310 class wxCairoBitmapData : public wxGraphicsObjectRefData
 311 {
 312 public:
 313     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
 314     wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
 315     ~wxCairoBitmapData();
 316
 317     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
 318     virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
 319     virtual wxSize GetSize() { return wxSize(m_width, m_height); }
 320 private :
 321     cairo_surface_t* m_surface;
 322     cairo_pattern_t* m_pattern;
 323     int m_width;
 324     int m_height;
 325     unsigned char* m_buffer;
 326 };
 327
 328 class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
 329 {
 330 public:
 331     wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
 332     wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
 333     wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
 334 #ifdef __WXGTK__
 335     wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable );
 336 #endif
 337 #ifdef __WXMSW__
 338     wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
 339 #endif
 340     wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
 341     wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
 342     wxCairoContext();
 343     virtual ~wxCairoContext();
 344
 345     virtual bool ShouldOffset() const
 346     {
 347         if ( !m_enableOffset )
 348             return false;
 349
 350         int penwidth = 0 ;
 351         if ( !m_pen.IsNull() )
 352         {
 353             penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
 354             if ( penwidth == 0 )
 355                 penwidth = 1;
 356         }
 357         return ( penwidth % 2 ) == 1;
 358     }
 359
 360     virtual void Clip( const wxRegion &region );
 361 #ifdef __WXMSW__
 362     cairo_surface_t* m_mswSurface;
 363 #endif
 364
 365     // clips drawings to the rect
 366     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 367
 368     // resets the clipping to original extent
 369     virtual void ResetClip();
 370
 371     virtual void * GetNativeContext();
 372
 373     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 374
 375     virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
 376
 377     virtual bool SetCompositionMode(wxCompositionMode op);
 378
 379     virtual void BeginLayer(wxDouble opacity);
 380
 381     virtual void EndLayer();
 382
 383     virtual void StrokePath( const wxGraphicsPath& p );
 384     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
 385
 386     virtual void Translate( wxDouble dx , wxDouble dy );
 387     virtual void Scale( wxDouble xScale , wxDouble yScale );
 388     virtual void Rotate( wxDouble angle );
 389
 390     // concatenates this transform with the current transform of this context
 391     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 392
 393     // sets the transform of this context
 394     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 395
 396     // gets the matrix of this context
 397     virtual wxGraphicsMatrix GetTransform() const;
 398
 399     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 400     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 401     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 402     virtual void PushState();
 403     virtual void PopState();
 404
 405     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 406                                 wxDouble *descent, wxDouble *externalLeading ) const;
 407     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 408
 409 protected:
 410     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
 411
 412 private:
 413     void Init(cairo_t *context);
 414
 415     cairo_t* m_context;
 416
 417     wxVector<float> m_layerOpacities;
 418
 419     wxDECLARE_NO_COPY_CLASS(wxCairoContext);
 420 };
 421
 422 //-----------------------------------------------------------------------------
 423 // wxCairoPenData implementation
 424 //-----------------------------------------------------------------------------
 425
 426 wxCairoPenData::~wxCairoPenData()
 427 {
 428     delete[] m_userLengths;
 429 }
 430
 431 void wxCairoPenData::Init()
 432 {
 433     m_lengths = NULL;
 434     m_userLengths = NULL;
 435     m_width = 0;
 436     m_count = 0;
 437 }
 438
 439 wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 440 : wxGraphicsObjectRefData(renderer)
 441 {
 442     Init();
 443     m_pen = pen;
 444     m_width = m_pen.GetWidth();
 445     if (m_width <= 0.0)
 446         m_width = 0.1;
 447
 448     m_red = m_pen.GetColour().Red()/255.0;
 449     m_green = m_pen.GetColour().Green()/255.0;
 450     m_blue = m_pen.GetColour().Blue()/255.0;
 451     m_alpha = m_pen.GetColour().Alpha()/255.0;
 452
 453     switch ( m_pen.GetCap() )
 454     {
 455     case wxCAP_ROUND :
 456         m_cap = CAIRO_LINE_CAP_ROUND;
 457         break;
 458
 459     case wxCAP_PROJECTING :
 460         m_cap = CAIRO_LINE_CAP_SQUARE;
 461         break;
 462
 463     case wxCAP_BUTT :
 464         m_cap = CAIRO_LINE_CAP_BUTT;
 465         break;
 466
 467     default :
 468         m_cap = CAIRO_LINE_CAP_BUTT;
 469         break;
 470     }
 471
 472     switch ( m_pen.GetJoin() )
 473     {
 474     case wxJOIN_BEVEL :
 475         m_join = CAIRO_LINE_JOIN_BEVEL;
 476         break;
 477
 478     case wxJOIN_MITER :
 479         m_join = CAIRO_LINE_JOIN_MITER;
 480         break;
 481
 482     case wxJOIN_ROUND :
 483         m_join = CAIRO_LINE_JOIN_ROUND;
 484         break;
 485
 486     default :
 487         m_join = CAIRO_LINE_JOIN_MITER;
 488         break;
 489     }
 490
 491     const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
 492     const double dotted[] =
 493     {
 494         dashUnit , dashUnit + 2.0
 495     };
 496     static const double short_dashed[] =
 497     {
 498         9.0 , 6.0
 499     };
 500     static const double dashed[] =
 501     {
 502         19.0 , 9.0
 503     };
 504     static const double dotted_dashed[] =
 505     {
 506         9.0 , 6.0 , 3.0 , 3.0
 507     };
 508
 509     switch ( m_pen.GetStyle() )
 510     {
 511     case wxPENSTYLE_SOLID :
 512         break;
 513
 514     case wxPENSTYLE_DOT :
 515         m_count = WXSIZEOF(dotted);
 516         m_userLengths = new double[ m_count ] ;
 517         memcpy( m_userLengths, dotted, sizeof(dotted) );
 518         m_lengths = m_userLengths;
 519         break;
 520
 521     case wxPENSTYLE_LONG_DASH :
 522         m_lengths = dashed ;
 523         m_count = WXSIZEOF(dashed);
 524         break;
 525
 526     case wxPENSTYLE_SHORT_DASH :
 527         m_lengths = short_dashed ;
 528         m_count = WXSIZEOF(short_dashed);
 529         break;
 530
 531     case wxPENSTYLE_DOT_DASH :
 532         m_lengths = dotted_dashed ;
 533         m_count = WXSIZEOF(dotted_dashed);
 534         break;
 535
 536     case wxPENSTYLE_USER_DASH :
 537         {
 538             wxDash *wxdashes ;
 539             m_count = m_pen.GetDashes( &wxdashes ) ;
 540             if ((wxdashes != NULL) && (m_count > 0))
 541             {
 542                 m_userLengths = new double[m_count] ;
 543                 for ( int i = 0 ; i < m_count ; ++i )
 544                 {
 545                     m_userLengths[i] = wxdashes[i] * dashUnit ;
 546
 547                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 548                         m_userLengths[i] = dashUnit + 2.0 ;
 549                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 550                         m_userLengths[i] = dashUnit ;
 551                 }
 552             }
 553             m_lengths = m_userLengths ;
 554         }
 555         break;
 556     case wxPENSTYLE_STIPPLE :
 557         {
 558             /*
 559             wxBitmap* bmp = pen.GetStipple();
 560             if ( bmp && bmp->IsOk() )
 561             {
 562             wxDELETE( m_penImage );
 563             wxDELETE( m_penBrush );
 564             m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 565             m_penBrush = new TextureBrush(m_penImage);
 566             m_pen->SetBrush( m_penBrush );
 567             }
 568             */
 569         }
 570         break;
 571     default :
 572         if ( m_pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
 573             && m_pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
 574         {
 575             /*
 576             wxDELETE( m_penBrush );
 577             HatchStyle style = HatchStyleHorizontal;
 578             switch( pen.GetStyle() )
 579             {
 580             case wxPENSTYLE_BDIAGONAL_HATCH :
 581             style = HatchStyleBackwardDiagonal;
 582             break ;
 583             case wxPENSTYLE_CROSSDIAG_HATCH :
 584             style = HatchStyleDiagonalCross;
 585             break ;
 586             case wxPENSTYLE_FDIAGONAL_HATCH :
 587             style = HatchStyleForwardDiagonal;
 588             break ;
 589             case wxPENSTYLE_CROSS_HATCH :
 590             style = HatchStyleCross;
 591             break ;
 592             case wxPENSTYLE_HORIZONTAL_HATCH :
 593             style = HatchStyleHorizontal;
 594             break ;
 595             case wxPENSTYLE_VERTICAL_HATCH :
 596             style = HatchStyleVertical;
 597             break ;
 598
 599             }
 600             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 601             pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
 602             m_pen->SetBrush( m_penBrush )
 603             */
 604         }
 605         break;
 606     }
 607 }
 608
 609 void wxCairoPenData::Apply( wxGraphicsContext* context )
 610 {
 611     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 612     cairo_set_line_width(ctext,m_width);
 613     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 614     cairo_set_line_cap(ctext,m_cap);
 615     cairo_set_line_join(ctext,m_join);
 616     cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
 617 }
 618
 619 //-----------------------------------------------------------------------------
 620 // wxCairoBrushData implementation
 621 //-----------------------------------------------------------------------------
 622
 623 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
 624   : wxGraphicsObjectRefData( renderer )
 625 {
 626     Init();
 627 }
 628
 629 wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush )
 630   : wxGraphicsObjectRefData(renderer)
 631 {
 632     Init();
 633
 634     m_red = brush.GetColour().Red()/255.0;
 635     m_green = brush.GetColour().Green()/255.0;
 636     m_blue = brush.GetColour().Blue()/255.0;
 637     m_alpha = brush.GetColour().Alpha()/255.0;
 638     /*
 639     if ( brush.GetStyle() == wxBRUSHSTYLE_SOLID)
 640     {
 641     m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 642     brush.GetColour().Green() , brush.GetColour().Blue() ) );
 643     }
 644     else if ( brush.IsHatch() )
 645     {
 646     HatchStyle style = HatchStyleHorizontal;
 647     switch( brush.GetStyle() )
 648     {
 649     case wxBRUSHSTYLE_BDIAGONAL_HATCH :
 650     style = HatchStyleBackwardDiagonal;
 651     break ;
 652     case wxBRUSHSTYLE_CROSSDIAG_HATCH :
 653     style = HatchStyleDiagonalCross;
 654     break ;
 655     case wxBRUSHSTYLE_FDIAGONAL_HATCH :
 656     style = HatchStyleForwardDiagonal;
 657     break ;
 658     case wxBRUSHSTYLE_CROSS_HATCH :
 659     style = HatchStyleCross;
 660     break ;
 661     case wxBRUSHSTYLE_HORIZONTAL_HATCH :
 662     style = HatchStyleHorizontal;
 663     break ;
 664     case wxBRUSHSTYLE_VERTICAL_HATCH :
 665     style = HatchStyleVertical;
 666     break ;
 667
 668     }
 669     m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 670     brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
 671     }
 672     else
 673     {
 674     wxBitmap* bmp = brush.GetStipple();
 675     if ( bmp && bmp->IsOk() )
 676     {
 677     wxDELETE( m_brushImage );
 678     m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 679     m_brush = new TextureBrush(m_brushImage);
 680     }
 681     }
 682     */
 683 }
 684
 685 wxCairoBrushData::~wxCairoBrushData ()
 686 {
 687     if (m_brushPattern)
 688         cairo_pattern_destroy(m_brushPattern);
 689 }
 690
 691 void wxCairoBrushData::Apply( wxGraphicsContext* context )
 692 {
 693     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 694     if ( m_brushPattern )
 695     {
 696         cairo_set_source(ctext,m_brushPattern);
 697     }
 698     else
 699     {
 700         cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 701     }
 702 }
 703
 704 void wxCairoBrushData::AddGradientStops(const wxGraphicsGradientStops& stops)
 705 {
 706     // loop over all the stops, they include the beginning and ending ones
 707     const unsigned numStops = stops.GetCount();
 708     for ( unsigned n = 0; n < numStops; n++ )
 709     {
 710         const wxGraphicsGradientStop stop = stops.Item(n);
 711
 712         const wxColour col = stop.GetColour();
 713
 714         cairo_pattern_add_color_stop_rgba
 715         (
 716             m_brushPattern,
 717             stop.GetPosition(),
 718             col.Red()/255.0,
 719             col.Green()/255.0,
 720             col.Blue()/255.0,
 721             col.Alpha()/255.0
 722         );
 723     }
 724
 725     wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS,
 726                  wxT("Couldn't create cairo pattern"));
 727 }
 728
 729 void
 730 wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 731                                             wxDouble x2, wxDouble y2,
 732                                             const wxGraphicsGradientStops& stops)
 733 {
 734     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 735
 736     AddGradientStops(stops);
 737 }
 738
 739 void
 740 wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 741                                             wxDouble xc, wxDouble yc,
 742                                             wxDouble radius,
 743                                             const wxGraphicsGradientStops& stops)
 744 {
 745     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 746
 747     AddGradientStops(stops);
 748 }
 749
 750 void wxCairoBrushData::Init()
 751 {
 752     m_brushPattern = NULL;
 753 }
 754
 755 //-----------------------------------------------------------------------------
 756 // wxCairoFontData implementation
 757 //-----------------------------------------------------------------------------
 758
 759 wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 760                          const wxColour& col ) : wxGraphicsObjectRefData(renderer)
 761 {
 762     m_red = col.Red()/255.0;
 763     m_green = col.Green()/255.0;
 764     m_blue = col.Blue()/255.0;
 765     m_alpha = col.Alpha()/255.0;
 766     m_size = font.GetPointSize();
 767     m_underlined = font.GetUnderlined();
 768
 769 #ifdef __WXMAC__
 770     m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
 771 #elif defined(__WXGTK__)
 772     m_font = pango_font_description_copy( font.GetNativeFontInfo()->description );
 773 #else
 774     m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
 775     m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
 776     m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
 777 #endif
 778 }
 779
 780 wxCairoFontData::~wxCairoFontData()
 781 {
 782 #ifdef __WXMAC__
 783     cairo_font_face_destroy( m_font );
 784 #elif defined(__WXGTK__)
 785     pango_font_description_free( m_font );
 786 #else
 787 #endif
 788 }
 789
 790 void wxCairoFontData::Apply( wxGraphicsContext* context )
 791 {
 792     cairo_t * ctext = (cairo_t*) context->GetNativeContext();
 793     cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
 794 #ifdef __WXGTK__
 795     // the rest is done using Pango layouts
 796 #elif defined(__WXMAC__)
 797     cairo_set_font_face(ctext, m_font);
 798     cairo_set_font_size(ctext, m_size );
 799 #else
 800     cairo_select_font_face(ctext, m_fontName, m_slant, m_weight );
 801     cairo_set_font_size(ctext, m_size );
 802 #endif
 803 }
 804
 805 //-----------------------------------------------------------------------------
 806 // wxCairoPathData implementation
 807 //-----------------------------------------------------------------------------
 808
 809 wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
 810     : wxGraphicsPathData(renderer)
 811 {
 812     if (pathcontext)
 813     {
 814         m_pathContext = pathcontext;
 815     }
 816     else
 817     {
 818         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 819         m_pathContext = cairo_create(surface);
 820         cairo_surface_destroy (surface);
 821     }
 822 }
 823
 824 wxCairoPathData::~wxCairoPathData()
 825 {
 826     cairo_destroy(m_pathContext);
 827 }
 828
 829 wxGraphicsObjectRefData *wxCairoPathData::Clone() const
 830 {
 831     cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
 832     cairo_t* pathcontext = cairo_create(surface);
 833     cairo_surface_destroy (surface);
 834
 835     cairo_path_t* path = cairo_copy_path(m_pathContext);
 836     cairo_append_path(pathcontext, path);
 837     cairo_path_destroy(path);
 838     return new wxCairoPathData( GetRenderer() ,pathcontext);
 839 }
 840
 841
 842 void* wxCairoPathData::GetNativePath() const
 843 {
 844     return cairo_copy_path(m_pathContext) ;
 845 }
 846
 847 void wxCairoPathData::UnGetNativePath(void *p) const
 848 {
 849     cairo_path_destroy((cairo_path_t*)p);
 850 }
 851
 852 //
 853 // The Primitives
 854 //
 855
 856 void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
 857 {
 858     cairo_move_to(m_pathContext,x,y);
 859 }
 860
 861 void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
 862 {
 863     cairo_line_to(m_pathContext,x,y);
 864 }
 865
 866 void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
 867 {
 868     cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
 869     cairo_append_path(m_pathContext, p);
 870     UnGetNativePath(p);
 871 }
 872
 873 void wxCairoPathData::CloseSubpath()
 874 {
 875     cairo_close_path(m_pathContext);
 876 }
 877
 878 void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 879 {
 880     cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
 881 }
 882
 883 // gets the last point of the current path, (0,0) if not yet set
 884 void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
 885 {
 886     double dx,dy;
 887     cairo_get_current_point(m_pathContext,&dx,&dy);
 888     if (x)
 889         *x = dx;
 890     if (y)
 891         *y = dy;
 892 }
 893
 894 void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 895 {
 896     // as clockwise means positive in our system (y pointing downwards)
 897     // TODO make this interpretation dependent of the
 898     // real device trans
 899     if ( clockwise||(endAngle-startAngle)>=2*M_PI)
 900         cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
 901     else
 902         cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
 903 }
 904
 905 // transforms each point of this path by the matrix
 906 void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
 907 {
 908     // as we don't have a true path object, we have to apply the inverse
 909     // matrix to the context
 910     cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
 911     cairo_matrix_invert( &m );
 912     cairo_transform(m_pathContext,&m);
 913 }
 914
 915 // gets the bounding box enclosing all points (possibly including control points)
 916 void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
 917 {
 918     double x1,y1,x2,y2;
 919
 920     cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
 921     if ( x2 < x1 )
 922     {
 923         *x = x2;
 924         *w = x1-x2;
 925     }
 926     else
 927     {
 928         *x = x1;
 929         *w = x2-x1;
 930     }
 931
 932     if( y2 < y1 )
 933     {
 934         *y = y2;
 935         *h = y1-y2;
 936     }
 937     else
 938     {
 939         *y = y1;
 940         *h = y2-y1;
 941     }
 942 }
 943
 944 bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
 945 {
 946     cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
 947     return cairo_in_fill( m_pathContext, x, y) != 0;
 948 }
 949
 950 //-----------------------------------------------------------------------------
 951 // wxCairoMatrixData implementation
 952 //-----------------------------------------------------------------------------
 953
 954 wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
 955     : wxGraphicsMatrixData(renderer)
 956 {
 957     if ( matrix )
 958         m_matrix = *matrix;
 959 }
 960
 961 wxCairoMatrixData::~wxCairoMatrixData()
 962 {
 963     // nothing to do
 964 }
 965
 966 wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
 967 {
 968     return new wxCairoMatrixData(GetRenderer(),&m_matrix);
 969 }
 970
 971 // concatenates the matrix
 972 void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
 973 {
 974     cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
 975 }
 976
 977 // sets the matrix to the respective values
 978 void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 979                         wxDouble tx, wxDouble ty)
 980 {
 981     cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
 982 }
 983
 984 // gets the component valuess of the matrix
 985 void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 986                             wxDouble* d, wxDouble* tx, wxDouble* ty) const
 987 {
 988     if (a)  *a = m_matrix.xx;
 989     if (b)  *b = m_matrix.yx;
 990     if (c)  *c = m_matrix.xy;
 991     if (d)  *d = m_matrix.yy;
 992     if (tx) *tx= m_matrix.x0;
 993     if (ty) *ty= m_matrix.y0;
 994 }
 995
 996 // makes this the inverse matrix
 997 void wxCairoMatrixData::Invert()
 998 {
 999     cairo_matrix_invert( &m_matrix );
1000 }
1001
1002 // returns true if the elements of the transformation matrix are equal ?
1003 bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1004 {
1005     const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
1006     return (
1007         m_matrix.xx == tm->xx &&
1008         m_matrix.yx == tm->yx &&
1009         m_matrix.xy == tm->xy &&
1010         m_matrix.yy == tm->yy &&
1011         m_matrix.x0 == tm->x0 &&
1012         m_matrix.y0 == tm->y0 ) ;
1013 }
1014
1015 // return true if this is the identity matrix
1016 bool wxCairoMatrixData::IsIdentity() const
1017 {
1018     return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
1019         m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
1020 }
1021
1022 //
1023 // transformation
1024 //
1025
1026 // add the translation to this matrix
1027 void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
1028 {
1029     cairo_matrix_translate( &m_matrix, dx, dy) ;
1030 }
1031
1032 // add the scale to this matrix
1033 void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1034 {
1035     cairo_matrix_scale( &m_matrix, xScale, yScale) ;
1036 }
1037
1038 // add the rotation to this matrix (radians)
1039 void wxCairoMatrixData::Rotate( wxDouble angle )
1040 {
1041     cairo_matrix_rotate( &m_matrix, angle) ;
1042 }
1043
1044 //
1045 // apply the transforms
1046 //
1047
1048 // applies that matrix to the point
1049 void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1050 {
1051     double lx = *x, ly = *y ;
1052     cairo_matrix_transform_point( &m_matrix, &lx, &ly);
1053     *x = lx;
1054     *y = ly;
1055 }
1056
1057 // applies the matrix except for translations
1058 void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1059 {
1060     double lx = *dx, ly = *dy ;
1061     cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
1062     *dx = lx;
1063     *dy = ly;
1064 }
1065
1066 // returns the native representation
1067 void * wxCairoMatrixData::GetNativeMatrix() const
1068 {
1069     return (void*) &m_matrix;
1070 }
1071
1072 // wxCairoBitmap implementation
1073 //-----------------------------------------------------------------------------
1074
1075 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
1076     wxGraphicsObjectRefData( renderer )
1077 {
1078     m_surface = bitmap;
1079     m_pattern = cairo_pattern_create_for_surface(m_surface);
1080 }
1081
1082 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
1083 {
1084     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
1085
1086 #ifdef wxHAS_RAW_BITMAP
1087     int bw = m_width = bmp.GetWidth();
1088     int bh = m_height = bmp.GetHeight();
1089     wxBitmap bmpSource = bmp;  // we need a non-const instance
1090     m_buffer = new unsigned char[bw*bh*4];
1091     wxUint32* data = (wxUint32*)m_buffer;
1092     cairo_format_t bufferFormat;
1093
1094     // Create a surface object and copy the bitmap pixel data to it.  if the
1095     // image has alpha (or a mask represented as alpha) then we'll use a
1096     // different format and iterator than if it doesn't...
1097     if (bmpSource.GetDepth() == 32
1098 #ifdef __WXGTK__
1099             || bmpSource.GetMask()
1100 #endif
1101     )
1102     {   // use the bitmap's alpha
1103         bufferFormat = CAIRO_FORMAT_ARGB32;
1104         wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1105         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1106
1107         wxAlphaPixelData::Iterator p(pixData);
1108         for (int y=0; y<bh; y++)
1109         {
1110             wxAlphaPixelData::Iterator rowStart = p;
1111             for (int x=0; x<bw; x++)
1112             {
1113                 // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
1114                 // with alpha in the upper 8 bits, then red, then green, then
1115                 // blue. The 32-bit quantities are stored native-endian.
1116                 // Pre-multiplied alpha is used.
1117                 unsigned char alpha = p.Alpha();
1118                 if (alpha == 0)
1119                     *data = 0;
1120                 else
1121                     *data = ( alpha                      << 24
1122                               | (p.Red() * alpha/255)    << 16
1123                               | (p.Green() * alpha/255)  <<  8
1124                               | (p.Blue() * alpha/255) );
1125                 ++data;
1126                 ++p;
1127             }
1128             p = rowStart;
1129             p.OffsetY(pixData, 1);
1130         }
1131     }
1132     else  // no alpha
1133     {
1134         bufferFormat = CAIRO_FORMAT_RGB24;
1135         wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
1136         wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
1137
1138         wxNativePixelData::Iterator p(pixData);
1139         for (int y=0; y<bh; y++)
1140         {
1141             wxNativePixelData::Iterator rowStart = p;
1142             for (int x=0; x<bw; x++)
1143             {
1144                 // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
1145                 // the upper 8 bits unused. Red, Green, and Blue are stored in
1146                 // the remaining 24 bits in that order.  The 32-bit quantities
1147                 // are stored native-endian.
1148                 *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
1149                 ++data;
1150                 ++p;
1151             }
1152             p = rowStart;
1153             p.OffsetY(pixData, 1);
1154         }
1155     }
1156 #ifdef __WXMSW__
1157     // if there is a mask, set the alpha bytes in the target buffer to
1158     // fully transparent or fully opaque
1159     if (bmpSource.GetMask())
1160     {
1161         wxBitmap bmpMask = bmpSource.GetMaskBitmap();
1162         bufferFormat = CAIRO_FORMAT_ARGB32;
1163         data = (wxUint32*)m_buffer;
1164         wxNativePixelData pixData(bmpMask, wxPoint(0,0), wxSize(bw, bh));
1165         wxCHECK_RET( pixData, wxT("Failed to gain raw access to mask bitmap data."));
1166
1167         wxNativePixelData::Iterator p(pixData);
1168         for (int y=0; y<bh; y++)
1169         {
1170             wxNativePixelData::Iterator rowStart = p;
1171             for (int x=0; x<bw; x++)
1172             {
1173                 if (p.Red()+p.Green()+p.Blue() == 0)
1174                     *data = 0;
1175                 else
1176                     *data = (wxALPHA_OPAQUE << 24) | (*data & 0x00FFFFFF);
1177                 ++data;
1178                 ++p;
1179             }
1180             p = rowStart;
1181             p.OffsetY(pixData, 1);
1182         }
1183     }
1184 #endif
1185
1186     m_surface = cairo_image_surface_create_for_data(
1187                             m_buffer, bufferFormat, bw, bh, bw*4);
1188     m_pattern = cairo_pattern_create_for_surface(m_surface);
1189 #endif // wxHAS_RAW_BITMAP
1190 }
1191
1192 wxCairoBitmapData::~wxCairoBitmapData()
1193 {
1194     if (m_pattern)
1195         cairo_pattern_destroy(m_pattern);
1196
1197     if (m_surface)
1198         cairo_surface_destroy(m_surface);
1199
1200     delete [] m_buffer;
1201 }
1202
1203
1204
1205 //-----------------------------------------------------------------------------
1206 // wxCairoContext implementation
1207 //-----------------------------------------------------------------------------
1208
1209 class wxCairoOffsetHelper
1210 {
1211 public :
1212     wxCairoOffsetHelper( cairo_t* ctx , bool offset )
1213     {
1214         m_ctx = ctx;
1215         m_offset = offset;
1216         if ( m_offset )
1217              cairo_translate( m_ctx, 0.5, 0.5 );
1218     }
1219     ~wxCairoOffsetHelper( )
1220     {
1221         if ( m_offset )
1222             cairo_translate( m_ctx, -0.5, -0.5 );
1223     }
1224 public :
1225     cairo_t* m_ctx;
1226     bool m_offset;
1227 } ;
1228
1229 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
1230 : wxGraphicsContext(renderer)
1231 {
1232 #ifdef __WXMSW__
1233     // wxMSW contexts always use MM_ANISOTROPIC, which messes up
1234     // text rendering when printing using Cairo. Switch it to MM_TEXT
1235     // map mode to avoid this problem.
1236     HDC hdc = (HDC)dc.GetHDC();
1237     ::SetMapMode(hdc, MM_TEXT);
1238     m_mswSurface = cairo_win32_printing_surface_create(hdc);
1239     Init( cairo_create(m_mswSurface) );
1240 #endif
1241
1242 #ifdef __WXGTK20__
1243     const wxDCImpl *impl = dc.GetImpl();
1244     Init( (cairo_t*) impl->GetCairoContext() );
1245 #endif
1246     wxSize sz = dc.GetSize();
1247     m_width = sz.x;
1248     m_height = sz.y;
1249
1250     wxPoint org = dc.GetDeviceOrigin();
1251     cairo_translate( m_context, org.x, org.y );
1252
1253     double sx,sy;
1254     dc.GetUserScale( &sx, &sy );
1255
1256 // TODO: Determine if these fixes are needed on other platforms too.
1257 // On MSW, without this the printer context will not respect wxDC SetMapMode calls.
1258 // For example, using dc.SetMapMode(wxMM_POINTS) can let us share printer and screen
1259 // drawing code
1260 #ifdef __WXMSW__
1261     double lsx,lsy;
1262     dc.GetLogicalScale( &lsx, &lsy );
1263     sx *= lsx;
1264     sy *= lsy;
1265 #endif
1266     cairo_scale( m_context, sx, sy );
1267
1268     org = dc.GetLogicalOrigin();
1269     cairo_translate( m_context, -org.x, -org.y );
1270 }
1271
1272 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
1273 : wxGraphicsContext(renderer)
1274 {
1275     int width, height;
1276     dc.GetSize( &width, &height );
1277     m_width = width;
1278     m_height = height;
1279
1280     m_enableOffset = true;
1281
1282 #ifdef __WXMSW__
1283     m_mswSurface = cairo_win32_surface_create((HDC)dc.GetHDC());
1284     Init( cairo_create(m_mswSurface) );
1285 #endif
1286
1287 #ifdef __WXGTK20__
1288     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1289     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1290
1291 #if 0
1292     wxGraphicsMatrix matrix = CreateMatrix();
1293
1294     wxPoint org = dc.GetDeviceOrigin();
1295     matrix.Translate( org.x, org.y );
1296
1297     org = dc.GetLogicalOrigin();
1298     matrix.Translate( -org.x, -org.y );
1299
1300     double sx,sy;
1301     dc.GetUserScale( &sx, &sy );
1302     matrix.Scale( sx, sy );
1303
1304     ConcatTransform( matrix );
1305 #endif
1306 #endif
1307
1308 #ifdef __WXMAC__
1309     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1310     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1311     Init( cairo_create( surface ) );
1312     cairo_surface_destroy( surface );
1313 #endif
1314 }
1315
1316 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
1317 : wxGraphicsContext(renderer)
1318 {
1319     int width, height;
1320     dc.GetSize( &width, &height );
1321     m_width = width;
1322     m_height = height;
1323
1324     m_enableOffset = true;
1325
1326 #ifdef __WXMSW__
1327     m_mswSurface = cairo_win32_surface_create((HDC)dc.GetHDC());
1328     Init( cairo_create(m_mswSurface) );
1329 #endif
1330
1331 #ifdef __WXGTK20__
1332     wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
1333     Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
1334
1335 #if 0
1336     wxGraphicsMatrix matrix = CreateMatrix();
1337
1338     wxPoint org = dc.GetDeviceOrigin();
1339     matrix.Translate( org.x, org.y );
1340
1341     org = dc.GetLogicalOrigin();
1342     matrix.Translate( -org.x, -org.y );
1343
1344     double sx,sy;
1345     dc.GetUserScale( &sx, &sy );
1346     matrix.Scale( sx, sy );
1347
1348     ConcatTransform( matrix );
1349 #endif
1350 #endif
1351
1352 #ifdef __WXMAC__
1353     CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
1354     cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
1355     Init( cairo_create( surface ) );
1356     cairo_surface_destroy( surface );
1357 #endif
1358 }
1359
1360 #ifdef __WXGTK20__
1361 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
1362 : wxGraphicsContext(renderer)
1363 {
1364     Init( gdk_cairo_create( drawable ) );
1365
1366     int width, height;
1367     gdk_drawable_get_size( drawable, &width, &height );
1368     m_width = width;
1369     m_height = height;
1370 }
1371 #endif
1372
1373 #ifdef __WXMSW__
1374 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
1375 : wxGraphicsContext(renderer)
1376 {
1377     m_mswSurface = cairo_win32_surface_create(handle);
1378     Init( cairo_create(m_mswSurface) );
1379     m_width =
1380     m_height = 0;
1381 }
1382 #endif
1383
1384
1385 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
1386 : wxGraphicsContext(renderer)
1387 {
1388     Init( context );
1389     m_width =
1390     m_height = 0;
1391 }
1392
1393 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
1394 : wxGraphicsContext(renderer)
1395 {
1396     m_enableOffset = true;
1397 #ifdef __WXGTK__
1398     // something along these lines (copied from dcclient)
1399
1400     // Some controls don't have m_wxwindow - like wxStaticBox, but the user
1401     // code should still be able to create wxClientDCs for them, so we will
1402     // use the parent window here then.
1403     if (window->m_wxwindow == NULL)
1404     {
1405         window = window->GetParent();
1406     }
1407
1408     wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
1409
1410     Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
1411
1412     wxSize sz = window->GetSize();
1413     m_width = sz.x;
1414     m_height = sz.y;
1415 #endif
1416
1417 #ifdef __WXMSW__
1418     m_mswSurface = cairo_win32_surface_create((HDC)window->GetHandle());
1419     Init(cairo_create(m_mswSurface));
1420 #endif
1421
1422 }
1423
1424 wxCairoContext::~wxCairoContext()
1425 {
1426     if ( m_context )
1427     {
1428         PopState();
1429         PopState();
1430         cairo_destroy(m_context);
1431     }
1432 #ifdef __WXMSW__
1433     if ( m_mswSurface )
1434         cairo_surface_destroy(m_mswSurface);
1435 #endif
1436 }
1437
1438 void wxCairoContext::Init(cairo_t *context)
1439 {
1440     m_context = context ;
1441     PushState();
1442     PushState();
1443 }
1444
1445
1446 void wxCairoContext::Clip( const wxRegion& region )
1447 {
1448     // Create a path with all the rectangles in the region
1449     wxGraphicsPath path = GetRenderer()->CreatePath();
1450     wxRegionIterator ri(region);
1451     while (ri)
1452     {
1453         path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
1454         ++ri;
1455     }
1456
1457     // Put it in the context
1458     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1459     cairo_append_path(m_context, cp);
1460
1461     // clip to that path
1462     cairo_clip(m_context);
1463     path.UnGetNativePath(cp);
1464 }
1465
1466 void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1467 {
1468     // Create a path with this rectangle
1469     wxGraphicsPath path = GetRenderer()->CreatePath();
1470     path.AddRectangle(x,y,w,h);
1471
1472     // Put it in the context
1473     cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1474     cairo_append_path(m_context, cp);
1475
1476     // clip to that path
1477     cairo_clip(m_context);
1478     path.UnGetNativePath(cp);
1479 }
1480
1481 void wxCairoContext::ResetClip()
1482 {
1483     cairo_reset_clip(m_context);
1484 }
1485
1486
1487 void wxCairoContext::StrokePath( const wxGraphicsPath& path )
1488 {
1489     if ( !m_pen.IsNull() )
1490     {
1491         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1492         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1493         cairo_append_path(m_context,cp);
1494         ((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
1495         cairo_stroke(m_context);
1496         path.UnGetNativePath(cp);
1497     }
1498 }
1499
1500 void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1501 {
1502     if ( !m_brush.IsNull() )
1503     {
1504         wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
1505         cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
1506         cairo_append_path(m_context,cp);
1507         ((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
1508         cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
1509         cairo_fill(m_context);
1510         path.UnGetNativePath(cp);
1511     }
1512 }
1513
1514 void wxCairoContext::Rotate( wxDouble angle )
1515 {
1516     cairo_rotate(m_context,angle);
1517 }
1518
1519 void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
1520 {
1521     cairo_translate(m_context,dx,dy);
1522 }
1523
1524 void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
1525 {
1526     cairo_scale(m_context,xScale,yScale);
1527 }
1528
1529 // concatenates this transform with the current transform of this context
1530 void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1531 {
1532     cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
1533 }
1534
1535 // sets the transform of this context
1536 void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
1537 {
1538     cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
1539 }
1540
1541 // gets the matrix of this context
1542 wxGraphicsMatrix wxCairoContext::GetTransform() const
1543 {
1544     wxGraphicsMatrix matrix = CreateMatrix();
1545     cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
1546     return matrix;
1547 }
1548
1549
1550
1551 void wxCairoContext::PushState()
1552 {
1553     cairo_save(m_context);
1554 }
1555
1556 void wxCairoContext::PopState()
1557 {
1558     cairo_restore(m_context);
1559 }
1560
1561 void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1562 {
1563     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1564     DrawBitmap(bitmap, x, y, w, h);
1565
1566 }
1567
1568 void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1569 {
1570     PushState();
1571
1572     // In case we're scaling the image by using a width and height different
1573     // than the bitmap's size create a pattern transformation on the surface and
1574     // draw the transformed pattern.
1575     wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
1576     cairo_pattern_t* pattern = data->GetCairoPattern();
1577     wxSize size = data->GetSize();
1578
1579     wxDouble scaleX = w / size.GetWidth();
1580     wxDouble scaleY = h / size.GetHeight();
1581
1582     // prepare to draw the image
1583     cairo_translate(m_context, x, y);
1584     cairo_scale(m_context, scaleX, scaleY);
1585     cairo_set_source(m_context, pattern);
1586     // use the original size here since the context is scaled already...
1587     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
1588     // fill the rectangle using the pattern
1589     cairo_fill(m_context);
1590
1591     PopState();
1592 }
1593
1594 void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1595 {
1596     // An icon is a bitmap on wxGTK, so do this the easy way.  When we want to
1597     // start using the Cairo backend on other platforms then we may need to
1598     // fiddle with this...
1599     DrawBitmap(icon, x, y, w, h);
1600 }
1601
1602
1603 void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
1604 {
1605     wxCHECK_RET( !m_font.IsNull(),
1606                  wxT("wxCairoContext::DrawText - no valid font set") );
1607
1608     if ( str.empty())
1609         return;
1610
1611     const wxCharBuffer data = str.utf8_str();
1612     if ( !data )
1613         return;
1614
1615     ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
1616
1617 #ifdef __WXGTK__
1618     size_t datalen = strlen(data);
1619
1620     PangoLayout *layout = pango_cairo_create_layout (m_context);
1621     wxCairoFontData* font_data = (wxCairoFontData*) m_font.GetRefData();
1622     pango_layout_set_font_description( layout, font_data->GetFont());
1623     pango_layout_set_text(layout, data, datalen);
1624
1625     if (font_data->GetUnderlined())
1626     {
1627         PangoAttrList *attrs = pango_attr_list_new();
1628         PangoAttribute *attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1629         pango_attr_list_insert(attrs, attr);
1630         pango_layout_set_attributes(layout, attrs);
1631         pango_attr_list_unref(attrs);
1632     }
1633
1634     cairo_move_to(m_context, x, y);
1635     pango_cairo_show_layout (m_context, layout);
1636
1637     g_object_unref (layout);
1638 #else
1639     // Cairo's x,y for drawing text is at the baseline, so we need to adjust
1640     // the position we move to by the ascent.
1641     cairo_font_extents_t fe;
1642     cairo_font_extents(m_context, &fe);
1643     cairo_move_to(m_context, x, y+fe.ascent);
1644
1645     cairo_show_text(m_context, data);
1646 #endif
1647 }
1648
1649 void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1650                                     wxDouble *descent, wxDouble *externalLeading ) const
1651 {
1652     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
1653
1654     if ( width )
1655         *width = 0;
1656     if ( height )
1657         *height = 0;
1658     if ( descent )
1659         *descent = 0;
1660     if ( externalLeading )
1661         *externalLeading = 0;
1662
1663     if ( str.empty())
1664         return;
1665
1666 #ifdef __WXGTK__
1667     int w, h;
1668
1669     PangoLayout *layout = pango_cairo_create_layout (m_context);
1670     pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
1671     const wxCharBuffer data = str.utf8_str();
1672     if ( !data )
1673     {
1674         return;
1675     }
1676     pango_layout_set_text( layout, data, strlen(data) );
1677     pango_layout_get_pixel_size (layout, &w, &h);
1678     if ( width )
1679         *width = w;
1680     if ( height )
1681         *height = h;
1682     if (descent)
1683     {
1684         PangoLayoutIter *iter = pango_layout_get_iter(layout);
1685         int baseline = pango_layout_iter_get_baseline(iter);
1686         pango_layout_iter_free(iter);
1687         *descent = h - PANGO_PIXELS(baseline);
1688     }
1689     g_object_unref (layout);
1690 #else
1691     ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this);
1692
1693     if (width)
1694     {
1695         const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
1696         cairo_text_extents_t te;
1697         cairo_text_extents(m_context, buf, &te);
1698         *width = te.width;
1699     }
1700
1701     if (height || descent || externalLeading)
1702     {
1703         cairo_font_extents_t fe;
1704         cairo_font_extents(m_context, &fe);
1705
1706         // some backends have negative descents
1707
1708         if ( fe.descent < 0 )
1709             fe.descent = -fe.descent;
1710
1711         if ( fe.height < (fe.ascent + fe.descent ) )
1712         {
1713             // some backends are broken re height ... (eg currently ATSUI)
1714             fe.height = fe.ascent + fe.descent;
1715         }
1716
1717         if (height)
1718             *height = fe.height;
1719         if ( descent )
1720             *descent = fe.descent;
1721         if ( externalLeading )
1722             *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
1723     }
1724 #endif
1725 }
1726
1727 void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1728 {
1729     widths.Empty();
1730     widths.Add(0, text.length());
1731
1732     wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
1733
1734     if (text.empty())
1735         return;
1736
1737     // TODO
1738 }
1739
1740 void * wxCairoContext::GetNativeContext()
1741 {
1742     return m_context;
1743 }
1744
1745 bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
1746 {
1747     if (m_antialias == antialias)
1748         return true;
1749
1750     m_antialias = antialias;
1751
1752     cairo_antialias_t antialiasMode;
1753     switch (antialias)
1754     {
1755         case wxANTIALIAS_DEFAULT:
1756             antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
1757             break;
1758         case wxANTIALIAS_NONE:
1759             antialiasMode = CAIRO_ANTIALIAS_NONE;
1760             break;
1761         default:
1762             return false;
1763     }
1764     cairo_set_antialias(m_context, antialiasMode);
1765     return true;
1766 }
1767
1768 bool wxCairoContext::SetInterpolationQuality(wxInterpolationQuality WXUNUSED(interpolation))
1769 {
1770     // placeholder
1771     return false;
1772 }
1773
1774 bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
1775 {
1776     if ( m_composition == op )
1777         return true;
1778
1779     m_composition = op;
1780     cairo_operator_t cop;
1781     switch (op)
1782     {
1783         case wxCOMPOSITION_CLEAR:
1784             cop = CAIRO_OPERATOR_CLEAR;
1785             break;
1786         case wxCOMPOSITION_SOURCE:
1787             cop = CAIRO_OPERATOR_SOURCE;
1788             break;
1789         case wxCOMPOSITION_OVER:
1790             cop = CAIRO_OPERATOR_OVER;
1791             break;
1792         case wxCOMPOSITION_IN:
1793             cop = CAIRO_OPERATOR_IN;
1794             break;
1795         case wxCOMPOSITION_OUT:
1796             cop = CAIRO_OPERATOR_OUT;
1797             break;
1798         case wxCOMPOSITION_ATOP:
1799             cop = CAIRO_OPERATOR_ATOP;
1800             break;
1801         case wxCOMPOSITION_DEST:
1802             cop = CAIRO_OPERATOR_DEST;
1803             break;
1804         case wxCOMPOSITION_DEST_OVER:
1805             cop = CAIRO_OPERATOR_DEST_OVER;
1806             break;
1807         case wxCOMPOSITION_DEST_IN:
1808             cop = CAIRO_OPERATOR_DEST_IN;
1809             break;
1810         case wxCOMPOSITION_DEST_OUT:
1811             cop = CAIRO_OPERATOR_DEST_OUT;
1812             break;
1813         case wxCOMPOSITION_DEST_ATOP:
1814             cop = CAIRO_OPERATOR_DEST_ATOP;
1815             break;
1816         case wxCOMPOSITION_XOR:
1817             cop = CAIRO_OPERATOR_XOR;
1818             break;
1819         case wxCOMPOSITION_ADD:
1820             cop = CAIRO_OPERATOR_ADD;
1821             break;
1822         default:
1823             return false;
1824     }
1825     cairo_set_operator(m_context, cop);
1826     return true;
1827 }
1828
1829 void wxCairoContext::BeginLayer(wxDouble opacity)
1830 {
1831     m_layerOpacities.push_back(opacity);
1832     cairo_push_group(m_context);
1833 }
1834
1835 void wxCairoContext::EndLayer()
1836 {
1837     float opacity = m_layerOpacities.back();
1838     m_layerOpacities.pop_back();
1839     cairo_pop_group_to_source(m_context);
1840     cairo_paint_with_alpha(m_context,opacity);
1841 }
1842
1843 //-----------------------------------------------------------------------------
1844 // wxCairoRenderer declaration
1845 //-----------------------------------------------------------------------------
1846
1847 class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
1848 {
1849 public :
1850     wxCairoRenderer() {}
1851
1852     virtual ~wxCairoRenderer() {}
1853
1854     // Context
1855
1856     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1857     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
1858     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
1859
1860     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1861
1862     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1863
1864     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1865
1866     virtual wxGraphicsContext * CreateMeasuringContext();
1867 #ifdef __WXMSW__
1868 #if wxUSE_ENH_METAFILE
1869     virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
1870 #endif
1871 #endif
1872     // Path
1873
1874     virtual wxGraphicsPath CreatePath();
1875
1876     // Matrix
1877
1878     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1879         wxDouble tx=0.0, wxDouble ty=0.0);
1880
1881
1882     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1883
1884     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1885
1886     virtual wxGraphicsBrush
1887     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
1888                               wxDouble x2, wxDouble y2,
1889                               const wxGraphicsGradientStops& stops);
1890
1891     virtual wxGraphicsBrush
1892     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
1893                               wxDouble xc, wxDouble yc,
1894                               wxDouble radius,
1895                               const wxGraphicsGradientStops& stops);
1896
1897     // sets the font
1898     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1899
1900     // create a native bitmap representation
1901     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
1902
1903     // create a graphics bitmap from a native bitmap
1904     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
1905
1906     // create a subimage from a native image representation
1907     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
1908
1909 protected :
1910     bool EnsureIsLoaded();
1911     void Load();
1912     void Unload();
1913     friend class wxCairoModule;
1914 private :
1915     int m_loaded;
1916     DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
1917 } ;
1918
1919 //-----------------------------------------------------------------------------
1920 // wxCairoRenderer implementation
1921 //-----------------------------------------------------------------------------
1922
1923 IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
1924
1925 static wxCairoRenderer gs_cairoGraphicsRenderer;
1926 // temporary hack to allow creating a cairo context on any platform
1927 extern wxGraphicsRenderer* gCairoRenderer;
1928 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
1929
1930 bool wxCairoRenderer::EnsureIsLoaded()
1931 {
1932 #ifndef __WXGTK__
1933     Load();
1934     return wxCairoInit();
1935 #else
1936     return true;
1937 #endif
1938 }
1939
1940 void wxCairoRenderer::Load()
1941 {
1942     wxCairoInit();
1943 }
1944
1945 void wxCairoRenderer::Unload()
1946 {
1947     wxCairoCleanUp();
1948 }
1949
1950 // call EnsureIsLoaded() and return returnOnFail value if it fails
1951 #define ENSURE_LOADED_OR_RETURN(returnOnFail)  \
1952     if ( !EnsureIsLoaded() )                   \
1953         return (returnOnFail)
1954
1955 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
1956 {
1957     ENSURE_LOADED_OR_RETURN(NULL);
1958     return new wxCairoContext(this,dc);
1959 }
1960
1961 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
1962 {
1963     ENSURE_LOADED_OR_RETURN(NULL);
1964     return new wxCairoContext(this,dc);
1965 }
1966
1967 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
1968 {
1969     ENSURE_LOADED_OR_RETURN(NULL);
1970 #ifdef __WXGTK20__
1971     const wxDCImpl *impl = dc.GetImpl();
1972     cairo_t* context = (cairo_t*) impl->GetCairoContext();
1973     if (context)
1974        return new wxCairoContext(this,dc);
1975     else
1976 #endif
1977        return new wxCairoContext(this,dc);
1978 }
1979
1980 #ifdef __WXMSW__
1981 #if wxUSE_ENH_METAFILE
1982 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxEnhMetaFileDC& WXUNUSED(dc) )
1983 {
1984     ENSURE_LOADED_OR_RETURN(NULL);
1985     return NULL;
1986 }
1987 #endif
1988 #endif
1989
1990 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
1991 {
1992     ENSURE_LOADED_OR_RETURN(NULL);
1993 #ifdef __WXMSW__
1994     return new wxCairoContext(this,(HDC)context);
1995 #else
1996     return new wxCairoContext(this,(cairo_t*)context);
1997 #endif
1998 }
1999
2000
2001 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
2002 {
2003     ENSURE_LOADED_OR_RETURN(NULL);
2004 #ifdef __WXGTK__
2005     return new wxCairoContext(this,(GdkDrawable*)window);
2006 #else
2007     wxUnusedVar(window);
2008     return NULL;
2009 #endif
2010 }
2011
2012 wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
2013 {
2014     ENSURE_LOADED_OR_RETURN(NULL);
2015 #ifdef __WXGTK__
2016     return CreateContextFromNativeWindow(gdk_get_default_root_window());
2017 #endif
2018     return NULL;
2019     // TODO
2020 }
2021
2022 wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
2023 {
2024     ENSURE_LOADED_OR_RETURN(NULL);
2025     return new wxCairoContext(this, window );
2026 }
2027
2028 // Path
2029
2030 wxGraphicsPath wxCairoRenderer::CreatePath()
2031 {
2032     ENSURE_LOADED_OR_RETURN(wxNullGraphicsPath);
2033     wxGraphicsPath path;
2034     path.SetRefData( new wxCairoPathData(this) );
2035     return path;
2036 }
2037
2038
2039 // Matrix
2040
2041 wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2042                                                 wxDouble tx, wxDouble ty)
2043
2044 {
2045     ENSURE_LOADED_OR_RETURN(wxNullGraphicsMatrix);
2046     wxGraphicsMatrix m;
2047     wxCairoMatrixData* data = new wxCairoMatrixData( this );
2048     data->Set( a,b,c,d,tx,ty ) ;
2049     m.SetRefData(data);
2050     return m;
2051 }
2052
2053 wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
2054 {
2055     ENSURE_LOADED_OR_RETURN(wxNullGraphicsPen);
2056     if ( !pen.IsOk() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT )
2057         return wxNullGraphicsPen;
2058     else
2059     {
2060         wxGraphicsPen p;
2061         p.SetRefData(new wxCairoPenData( this, pen ));
2062         return p;
2063     }
2064 }
2065
2066 wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
2067 {
2068     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2069     if ( !brush.IsOk() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT )
2070         return wxNullGraphicsBrush;
2071     else
2072     {
2073         wxGraphicsBrush p;
2074         p.SetRefData(new wxCairoBrushData( this, brush ));
2075         return p;
2076     }
2077 }
2078
2079 wxGraphicsBrush
2080 wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2081                                            wxDouble x2, wxDouble y2,
2082                                            const wxGraphicsGradientStops& stops)
2083 {
2084     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2085     wxGraphicsBrush p;
2086     wxCairoBrushData* d = new wxCairoBrushData( this );
2087     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
2088     p.SetRefData(d);
2089     return p;
2090 }
2091
2092 wxGraphicsBrush
2093 wxCairoRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2094                                            wxDouble xc, wxDouble yc, wxDouble r,
2095                                            const wxGraphicsGradientStops& stops)
2096 {
2097     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2098     wxGraphicsBrush p;
2099     wxCairoBrushData* d = new wxCairoBrushData( this );
2100     d->CreateRadialGradientBrush(xo, yo, xc, yc, r, stops);
2101     p.SetRefData(d);
2102     return p;
2103 }
2104
2105 // sets the font
2106 wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
2107 {
2108     ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
2109     if ( font.IsOk() )
2110     {
2111         wxGraphicsFont p;
2112         p.SetRefData(new wxCairoFontData( this , font, col ));
2113         return p;
2114     }
2115     else
2116         return wxNullGraphicsFont;
2117 }
2118
2119 wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
2120 {
2121     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2122     if ( bmp.IsOk() )
2123     {
2124         wxGraphicsBitmap p;
2125         p.SetRefData(new wxCairoBitmapData( this , bmp ));
2126         return p;
2127     }
2128     else
2129         return wxNullGraphicsBitmap;
2130 }
2131
2132 wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
2133 {
2134     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2135     if ( bitmap != NULL )
2136     {
2137         wxGraphicsBitmap p;
2138         p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
2139         return p;
2140     }
2141     else
2142         return wxNullGraphicsBitmap;
2143 }
2144
2145 wxGraphicsBitmap
2146 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
2147                                  wxDouble WXUNUSED(x),
2148                                  wxDouble WXUNUSED(y),
2149                                  wxDouble WXUNUSED(w),
2150                                  wxDouble WXUNUSED(h))
2151 {
2152     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2153     wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
2154     return wxNullGraphicsBitmap;
2155 }
2156
2157 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2158 {
2159     return &gs_cairoGraphicsRenderer;
2160 }
2161
2162 #else // !wxUSE_CAIRO
2163
2164 wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
2165 {
2166     return NULL;
2167 }
2168
2169 #endif  // wxUSE_CAIRO/!wxUSE_CAIRO
2170
2171 // MSW and OS X have their own native default renderers, but the other ports
2172 // use Cairo by default
2173 #if !(defined(__WXMSW__) || defined(__WXOSX__))
2174 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2175 {
2176     return GetCairoRenderer();
2177 }
2178 #endif // !(__WXMSW__ || __WXOSX__)
2179
2180 #endif // wxUSE_GRAPHICS_CONTEXT