src/msw/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/graphics.cpp
   3 // Purpose:     wxGCDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     2006-09-30
   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/msw/wrapcdlg.h"
  22 #include "wx/image.h"
  23 #include "wx/window.h"
  24 #include "wx/dc.h"
  25 #include "wx/utils.h"
  26 #include "wx/dialog.h"
  27 #include "wx/app.h"
  28 #include "wx/bitmap.h"
  29 #include "wx/dcmemory.h"
  30 #include "wx/log.h"
  31 #include "wx/icon.h"
  32 #include "wx/dcprint.h"
  33 #include "wx/module.h"
  34 #endif
  35
  36 #include "wx/graphics.h"
  37
  38 #if wxUSE_GRAPHICS_CONTEXT
  39
  40 #include <vector>
  41
  42 using namespace std;
  43
  44 //-----------------------------------------------------------------------------
  45 // constants
  46 //-----------------------------------------------------------------------------
  47
  48 const double RAD2DEG = 180.0 / M_PI;
  49
  50 //-----------------------------------------------------------------------------
  51 // Local functions
  52 //-----------------------------------------------------------------------------
  53
  54 static inline double dmin(double a, double b) { return a < b ? a : b; }
  55 static inline double dmax(double a, double b) { return a > b ? a : b; }
  56
  57 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
  58 static inline double RadToDeg(double deg) { return (deg * 180.0) / M_PI; }
  59
  60 //-----------------------------------------------------------------------------
  61 // device context implementation
  62 //
  63 // more and more of the dc functionality should be implemented by calling
  64 // the appropricate wxGDIPlusContext, but we will have to do that step by step
  65 // also coordinate conversions should be moved to native matrix ops
  66 //-----------------------------------------------------------------------------
  67
  68 // we always stock two context states, one at entry, to be able to preserve the
  69 // state we were called with, the other one after changing to HI Graphics orientation
  70 // (this one is used for getting back clippings etc)
  71
  72 //-----------------------------------------------------------------------------
  73 // wxGraphicsPath implementation
  74 //-----------------------------------------------------------------------------
  75
  76 #include "wx/msw/private.h" // needs to be before #include <commdlg.h>
  77
  78 #if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
  79 #include <commdlg.h>
  80 #endif
  81
  82 // TODO remove this dependency (gdiplus needs the macros)
  83
  84 #ifndef max
  85 #define max(a,b)            (((a) > (b)) ? (a) : (b))
  86 #endif
  87
  88 #ifndef min
  89 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  90 #endif
  91
  92 #include "gdiplus.h"
  93 using namespace Gdiplus;
  94
  95 class WXDLLIMPEXP_CORE wxGDIPlusPathData : public wxGraphicsPathData
  96 {
  97 public :
  98     wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path = NULL);
  99     ~wxGDIPlusPathData();
 100
 101     virtual wxGraphicsObjectRefData *Clone() const;
 102
 103     //
 104     // These are the path primitives from which everything else can be constructed
 105     //
 106
 107     // begins a new subpath at (x,y)
 108     virtual void MoveToPoint( wxDouble x, wxDouble y );
 109
 110     // adds a straight line from the current point to (x,y)
 111     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 112
 113     // adds a cubic Bezier curve from the current point, using two control points and an end point
 114     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 115
 116
 117     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 118     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 119
 120     // gets the last point of the current path, (0,0) if not yet set
 121     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 122
 123     // adds another path
 124     virtual void AddPath( const wxGraphicsPathData* path );
 125
 126     // closes the current sub-path
 127     virtual void CloseSubpath();
 128
 129     //
 130     // These are convenience functions which - if not available natively will be assembled
 131     // using the primitives from above
 132     //
 133
 134     // appends a rectangle as a new closed subpath
 135     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 136     /*
 137
 138     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 139     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 140
 141     // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
 142     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 143 */
 144
 145         // returns the native path
 146         virtual void * GetNativePath() const { return m_path; }
 147
 148         // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 149         virtual void UnGetNativePath(void * WXUNUSED(path)) const {}
 150
 151     // transforms each point of this path by the matrix
 152     virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
 153
 154     // gets the bounding box enclosing all points (possibly including control points)
 155     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
 156
 157     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
 158
 159 private :
 160     GraphicsPath* m_path;
 161 };
 162
 163 class WXDLLIMPEXP_CORE wxGDIPlusMatrixData : public wxGraphicsMatrixData
 164 {
 165 public :
 166     wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix = NULL) ;
 167     virtual ~wxGDIPlusMatrixData() ;
 168
 169     virtual wxGraphicsObjectRefData* Clone() const ;
 170
 171     // concatenates the matrix
 172     virtual void Concat( const wxGraphicsMatrixData *t );
 173
 174     // sets the matrix to the respective values
 175     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 176         wxDouble tx=0.0, wxDouble ty=0.0);
 177
 178     // makes this the inverse matrix
 179     virtual void Invert();
 180
 181     // returns true if the elements of the transformation matrix are equal ?
 182     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 183
 184     // return true if this is the identity matrix
 185     virtual bool IsIdentity() const;
 186
 187     //
 188     // transformation
 189     //
 190
 191     // add the translation to this matrix
 192     virtual void Translate( wxDouble dx , wxDouble dy );
 193
 194     // add the scale to this matrix
 195     virtual void Scale( wxDouble xScale , wxDouble yScale );
 196
 197     // add the rotation to this matrix (radians)
 198     virtual void Rotate( wxDouble angle );
 199
 200     //
 201     // apply the transforms
 202     //
 203
 204     // applies that matrix to the point
 205     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 206
 207     // applies the matrix except for translations
 208     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 209
 210     // returns the native representation
 211     virtual void * GetNativeMatrix() const;
 212 private:
 213     Matrix* m_matrix ;
 214 } ;
 215
 216 class WXDLLIMPEXP_CORE wxGDIPlusPenData : public wxGraphicsObjectRefData
 217 {
 218 public:
 219     wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 220     ~wxGDIPlusPenData();
 221
 222     void Init();
 223
 224     virtual wxDouble GetWidth() { return m_width; }
 225     virtual Pen* GetGDIPlusPen() { return m_pen; }
 226
 227 protected :
 228     Pen* m_pen;
 229     Image* m_penImage;
 230     Brush* m_penBrush;
 231
 232     wxDouble m_width;
 233 };
 234
 235 class WXDLLIMPEXP_CORE wxGDIPlusBrushData : public wxGraphicsObjectRefData
 236 {
 237 public:
 238     wxGDIPlusBrushData( wxGraphicsRenderer* renderer );
 239     wxGDIPlusBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 240     ~wxGDIPlusBrushData ();
 241
 242     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 243         const wxColour&c1, const wxColour&c2 );
 244     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 245         const wxColour &oColor, const wxColour &cColor );
 246     virtual Brush* GetGDIPlusBrush() { return m_brush; }
 247
 248 protected:
 249     virtual void Init();
 250
 251 private :
 252     Brush* m_brush;
 253     Image* m_brushImage;
 254     GraphicsPath* m_brushPath;
 255 };
 256
 257 class WXDLLIMPEXP_CORE wxGDIPlusFontData : public wxGraphicsObjectRefData
 258 {
 259 public:
 260     wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 261     ~wxGDIPlusFontData();
 262
 263     virtual Brush* GetGDIPlusBrush() { return m_textBrush; }
 264     virtual Font* GetGDIPlusFont() { return m_font; }
 265 private :
 266     Brush* m_textBrush;
 267     Font* m_font;
 268 };
 269
 270 class WXDLLIMPEXP_CORE wxGDIPlusContext : public wxGraphicsContext
 271 {
 272 public:
 273     wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc );
 274     wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd );
 275     wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr);
 276     wxGDIPlusContext();
 277
 278     virtual ~wxGDIPlusContext();
 279
 280     virtual void Clip( const wxRegion &region );
 281     // clips drawings to the rect
 282     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 283
 284         // resets the clipping to original extent
 285         virtual void ResetClip();
 286
 287         virtual void * GetNativeContext();
 288
 289     virtual void StrokePath( const wxGraphicsPath& p );
 290     virtual void FillPath( const wxGraphicsPath& p , int fillStyle = wxODDEVEN_RULE );
 291
 292     virtual void Translate( wxDouble dx , wxDouble dy );
 293     virtual void Scale( wxDouble xScale , wxDouble yScale );
 294     virtual void Rotate( wxDouble angle );
 295
 296     // concatenates this transform with the current transform of this context
 297     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 298
 299     // sets the transform of this context
 300     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 301
 302     // gets the matrix of this context
 303     virtual wxGraphicsMatrix GetTransform() const;
 304
 305     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 306     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 307     virtual void PushState();
 308     virtual void PopState();
 309
 310     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y);
 311     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 312         wxDouble *descent, wxDouble *externalLeading ) const;
 313     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 314
 315 private:
 316     void    Init();
 317     void    SetDefaults();
 318
 319     Graphics* m_context;
 320     vector<GraphicsState> m_stateStack;
 321     GraphicsState m_state1;
 322     GraphicsState m_state2;
 323
 324     DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusContext)
 325 };
 326
 327 //-----------------------------------------------------------------------------
 328 // wxGDIPlusPen implementation
 329 //-----------------------------------------------------------------------------
 330
 331 wxGDIPlusPenData::~wxGDIPlusPenData()
 332 {
 333     delete m_pen;
 334     delete m_penImage;
 335     delete m_penBrush;
 336 }
 337
 338 void wxGDIPlusPenData::Init()
 339 {
 340     m_pen = NULL ;
 341     m_penImage = NULL;
 342     m_penBrush = NULL;
 343 }
 344
 345 wxGDIPlusPenData::wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 346 : wxGraphicsObjectRefData(renderer)
 347 {
 348     Init();
 349     m_width = pen.GetWidth();
 350     if (m_width <= 0.0)
 351         m_width = 0.1;
 352
 353     m_pen = new Pen(Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 354         pen.GetColour().Green() , pen.GetColour().Blue() ), m_width );
 355
 356     LineCap cap;
 357     switch ( pen.GetCap() )
 358     {
 359     case wxCAP_ROUND :
 360         cap = LineCapRound;
 361         break;
 362
 363     case wxCAP_PROJECTING :
 364         cap = LineCapSquare;
 365         break;
 366
 367     case wxCAP_BUTT :
 368         cap = LineCapFlat; // TODO verify
 369         break;
 370
 371     default :
 372         cap = LineCapFlat;
 373         break;
 374     }
 375     m_pen->SetLineCap(cap,cap, DashCapFlat);
 376
 377     LineJoin join;
 378     switch ( pen.GetJoin() )
 379     {
 380     case wxJOIN_BEVEL :
 381         join = LineJoinBevel;
 382         break;
 383
 384     case wxJOIN_MITER :
 385         join = LineJoinMiter;
 386         break;
 387
 388     case wxJOIN_ROUND :
 389         join = LineJoinRound;
 390         break;
 391
 392     default :
 393         join = LineJoinMiter;
 394         break;
 395     }
 396
 397     m_pen->SetLineJoin(join);
 398
 399     m_pen->SetDashStyle(DashStyleSolid);
 400
 401     DashStyle dashStyle = DashStyleSolid;
 402     switch ( pen.GetStyle() )
 403     {
 404     case wxSOLID :
 405         break;
 406
 407     case wxDOT :
 408         dashStyle = DashStyleDot;
 409         break;
 410
 411     case wxLONG_DASH :
 412         dashStyle = DashStyleDash; // TODO verify
 413         break;
 414
 415     case wxSHORT_DASH :
 416         dashStyle = DashStyleDash;
 417         break;
 418
 419     case wxDOT_DASH :
 420         dashStyle = DashStyleDashDot;
 421         break;
 422     case wxUSER_DASH :
 423         {
 424             dashStyle = DashStyleCustom;
 425             wxDash *dashes;
 426             int count = pen.GetDashes( &dashes );
 427             if ((dashes != NULL) && (count > 0))
 428             {
 429                 REAL *userLengths = new REAL[count];
 430                 for ( int i = 0; i < count; ++i )
 431                 {
 432                     userLengths[i] = dashes[i];
 433                 }
 434                 m_pen->SetDashPattern( userLengths, count);
 435                 delete[] userLengths;
 436             }
 437         }
 438         break;
 439     case wxSTIPPLE :
 440         {
 441             wxBitmap* bmp = pen.GetStipple();
 442             if ( bmp && bmp->Ok() )
 443             {
 444                 m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 445                 m_penBrush = new TextureBrush(m_penImage);
 446                 m_pen->SetBrush( m_penBrush );
 447             }
 448
 449         }
 450         break;
 451     default :
 452         if ( pen.GetStyle() >= wxFIRST_HATCH && pen.GetStyle() <= wxLAST_HATCH )
 453         {
 454             HatchStyle style = HatchStyleHorizontal;
 455             switch( pen.GetStyle() )
 456             {
 457             case wxBDIAGONAL_HATCH :
 458                 style = HatchStyleBackwardDiagonal;
 459                 break ;
 460             case wxCROSSDIAG_HATCH :
 461                 style = HatchStyleDiagonalCross;
 462                 break ;
 463             case wxFDIAGONAL_HATCH :
 464                 style = HatchStyleForwardDiagonal;
 465                 break ;
 466             case wxCROSS_HATCH :
 467                 style = HatchStyleCross;
 468                 break ;
 469             case wxHORIZONTAL_HATCH :
 470                 style = HatchStyleHorizontal;
 471                 break ;
 472             case wxVERTICAL_HATCH :
 473                 style = HatchStyleVertical;
 474                 break ;
 475
 476             }
 477             m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
 478                 pen.GetColour().Green() , pen.GetColour().Blue() ), Color::Transparent );
 479             m_pen->SetBrush( m_penBrush );
 480         }
 481         break;
 482     }
 483     if ( dashStyle != DashStyleSolid )
 484         m_pen->SetDashStyle(dashStyle);
 485 }
 486
 487 //-----------------------------------------------------------------------------
 488 // wxGDIPlusBrush implementation
 489 //-----------------------------------------------------------------------------
 490
 491 wxGDIPlusBrushData::wxGDIPlusBrushData( wxGraphicsRenderer* renderer )
 492 : wxGraphicsObjectRefData(renderer)
 493 {
 494     Init();
 495 }
 496
 497 wxGDIPlusBrushData::wxGDIPlusBrushData( wxGraphicsRenderer* renderer , const wxBrush &brush )
 498 : wxGraphicsObjectRefData(renderer)
 499 {
 500     Init();
 501     if ( brush.GetStyle() == wxSOLID)
 502     {
 503         m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 504             brush.GetColour().Green() , brush.GetColour().Blue() ) );
 505     }
 506     else if ( brush.IsHatch() )
 507     {
 508         HatchStyle style = HatchStyleHorizontal;
 509         switch( brush.GetStyle() )
 510         {
 511         case wxBDIAGONAL_HATCH :
 512             style = HatchStyleBackwardDiagonal;
 513             break ;
 514         case wxCROSSDIAG_HATCH :
 515             style = HatchStyleDiagonalCross;
 516             break ;
 517         case wxFDIAGONAL_HATCH :
 518             style = HatchStyleForwardDiagonal;
 519             break ;
 520         case wxCROSS_HATCH :
 521             style = HatchStyleCross;
 522             break ;
 523         case wxHORIZONTAL_HATCH :
 524             style = HatchStyleHorizontal;
 525             break ;
 526         case wxVERTICAL_HATCH :
 527             style = HatchStyleVertical;
 528             break ;
 529
 530         }
 531         m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
 532             brush.GetColour().Green() , brush.GetColour().Blue() ), Color::Transparent );
 533     }
 534     else
 535     {
 536         wxBitmap* bmp = brush.GetStipple();
 537         if ( bmp && bmp->Ok() )
 538         {
 539             wxDELETE( m_brushImage );
 540             m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
 541             m_brush = new TextureBrush(m_brushImage);
 542         }
 543     }
 544 }
 545
 546 wxGDIPlusBrushData::~wxGDIPlusBrushData()
 547 {
 548     delete m_brush;
 549     delete m_brushImage;
 550     delete m_brushPath;
 551 };
 552
 553 void wxGDIPlusBrushData::Init()
 554 {
 555     m_brush = NULL;
 556     m_brushImage= NULL;
 557     m_brushPath= NULL;
 558 }
 559
 560 void wxGDIPlusBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, const wxColour&c1, const wxColour&c2)
 561 {
 562     m_brush = new LinearGradientBrush( PointF( x1,y1) , PointF( x2,y2),
 563         Color( c1.Alpha(), c1.Red(),c1.Green() , c1.Blue() ),
 564         Color( c2.Alpha(), c2.Red(),c2.Green() , c2.Blue() ));
 565 }
 566
 567 void wxGDIPlusBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 568                                                const wxColour &oColor, const wxColour &cColor)
 569 {
 570     // Create a path that consists of a single circle.
 571     m_brushPath = new GraphicsPath();
 572     m_brushPath->AddEllipse( (REAL)(xc-radius), (REAL)(yc-radius), (REAL)(2*radius), (REAL)(2*radius));
 573
 574     PathGradientBrush *b = new PathGradientBrush(m_brushPath);
 575     m_brush = b;
 576     b->SetCenterPoint( PointF(xo,yo));
 577     b->SetCenterColor(Color( oColor.Alpha(), oColor.Red(),oColor.Green() , oColor.Blue() ));
 578
 579     Color colors[] = {Color( cColor.Alpha(), cColor.Red(),cColor.Green() , cColor.Blue() )};
 580     int count = 1;
 581     b->SetSurroundColors(colors, &count);
 582 }
 583
 584 //-----------------------------------------------------------------------------
 585 // wxGDIPlusFont implementation
 586 //-----------------------------------------------------------------------------
 587
 588 wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font,
 589                              const wxColour& col ) : wxGraphicsObjectRefData( renderer )
 590 {
 591     m_textBrush = NULL;
 592     m_font = NULL;
 593
 594     wxWCharBuffer s = font.GetFaceName().wc_str( *wxConvUI );
 595     int size = font.GetPointSize();
 596     int style = FontStyleRegular;
 597     if ( font.GetStyle() == wxFONTSTYLE_ITALIC )
 598         style |= FontStyleItalic;
 599     if ( font.GetUnderlined() )
 600         style |= FontStyleUnderline;
 601     if ( font.GetWeight() == wxFONTWEIGHT_BOLD )
 602         style |= FontStyleBold;
 603     m_font = new Font( s , size , style );
 604     m_textBrush = new SolidBrush( Color( col.Alpha() , col.Red() ,
 605         col.Green() , col.Blue() ));
 606 }
 607
 608 wxGDIPlusFontData::~wxGDIPlusFontData()
 609 {
 610     delete m_textBrush;
 611     delete m_font;
 612 }
 613
 614 //-----------------------------------------------------------------------------
 615 // wxGDIPlusPath implementation
 616 //-----------------------------------------------------------------------------
 617
 618 wxGDIPlusPathData::wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path ) : wxGraphicsPathData(renderer)
 619 {
 620     if ( path )
 621         m_path = path;
 622     else
 623         m_path = new GraphicsPath();
 624 }
 625
 626 wxGDIPlusPathData::~wxGDIPlusPathData()
 627 {
 628     delete m_path;
 629 }
 630
 631 wxGraphicsObjectRefData* wxGDIPlusPathData::Clone() const
 632 {
 633     return new wxGDIPlusPathData( GetRenderer() , m_path->Clone());
 634 }
 635
 636 //
 637 // The Primitives
 638 //
 639
 640 void wxGDIPlusPathData::MoveToPoint( wxDouble x , wxDouble y )
 641 {
 642     m_path->StartFigure();
 643     m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
 644 }
 645
 646 void wxGDIPlusPathData::AddLineToPoint( wxDouble x , wxDouble y )
 647 {
 648     m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
 649 }
 650
 651 void wxGDIPlusPathData::CloseSubpath()
 652 {
 653     m_path->CloseFigure();
 654 }
 655
 656 void wxGDIPlusPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 657 {
 658     PointF c1(cx1,cy1);
 659     PointF c2(cx2,cy2);
 660     PointF end(x,y);
 661     PointF start;
 662     m_path->GetLastPoint(&start);
 663     m_path->AddBezier(start,c1,c2,end);
 664 }
 665
 666 // gets the last point of the current path, (0,0) if not yet set
 667 void wxGDIPlusPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
 668 {
 669     PointF start;
 670     m_path->GetLastPoint(&start);
 671     *x = start.X ;
 672     *y = start.Y ;
 673 }
 674
 675 void wxGDIPlusPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
 676 {
 677     double sweepAngle = endAngle - startAngle ;
 678     if( abs(sweepAngle) >= 2*M_PI)
 679     {
 680         sweepAngle = 2 * M_PI;
 681     }
 682     else
 683     {
 684         if ( clockwise )
 685         {
 686             if( sweepAngle < 0 )
 687                 sweepAngle += 2 * M_PI;
 688         }
 689         else
 690         {
 691             if( sweepAngle > 0 )
 692                 sweepAngle -= 2 * M_PI;
 693
 694         }
 695    }
 696    m_path->AddArc((REAL) (x-r),(REAL) (y-r),(REAL) (2*r),(REAL) (2*r),RadToDeg(startAngle),RadToDeg(sweepAngle));
 697 }
 698
 699 void wxGDIPlusPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 700 {
 701     m_path->AddRectangle(RectF(x,y,w,h));
 702 }
 703
 704 void wxGDIPlusPathData::AddPath( const wxGraphicsPathData* path )
 705 {
 706     m_path->AddPath( (GraphicsPath*) path->GetNativePath(), FALSE);
 707 }
 708
 709
 710 // transforms each point of this path by the matrix
 711 void wxGDIPlusPathData::Transform( const wxGraphicsMatrixData* matrix )
 712 {
 713     m_path->Transform( (Matrix*) matrix->GetNativeMatrix() );
 714 }
 715
 716 // gets the bounding box enclosing all points (possibly including control points)
 717 void wxGDIPlusPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
 718 {
 719     RectF bounds;
 720     m_path->GetBounds( &bounds, NULL, NULL) ;
 721     *x = bounds.X;
 722     *y = bounds.Y;
 723     *w = bounds.Width;
 724     *h = bounds.Height;
 725 }
 726
 727 bool wxGDIPlusPathData::Contains( wxDouble x, wxDouble y, int fillStyle ) const
 728 {
 729     m_path->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
 730     return m_path->IsVisible( (FLOAT) x,(FLOAT) y) == TRUE ;
 731 }
 732
 733 //-----------------------------------------------------------------------------
 734 // wxGDIPlusMatrixData implementation
 735 //-----------------------------------------------------------------------------
 736
 737 wxGDIPlusMatrixData::wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix )
 738     : wxGraphicsMatrixData(renderer)
 739 {
 740     if ( matrix )
 741         m_matrix = matrix ;
 742     else
 743         m_matrix = new Matrix();
 744 }
 745
 746 wxGDIPlusMatrixData::~wxGDIPlusMatrixData()
 747 {
 748     delete m_matrix;
 749 }
 750
 751 wxGraphicsObjectRefData *wxGDIPlusMatrixData::Clone() const
 752 {
 753     return new wxGDIPlusMatrixData( GetRenderer(), m_matrix->Clone());
 754 }
 755
 756 // concatenates the matrix
 757 void wxGDIPlusMatrixData::Concat( const wxGraphicsMatrixData *t )
 758 {
 759     m_matrix->Multiply( (Matrix*) t->GetNativeMatrix());
 760 }
 761
 762 // sets the matrix to the respective values
 763 void wxGDIPlusMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 764                  wxDouble tx, wxDouble ty)
 765 {
 766     m_matrix->SetElements(a,b,c,d,tx,ty);
 767 }
 768
 769 // makes this the inverse matrix
 770 void wxGDIPlusMatrixData::Invert()
 771 {
 772     m_matrix->Invert();
 773 }
 774
 775 // returns true if the elements of the transformation matrix are equal ?
 776 bool wxGDIPlusMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 777 {
 778     return m_matrix->Equals((Matrix*) t->GetNativeMatrix())== TRUE ;
 779 }
 780
 781 // return true if this is the identity matrix
 782 bool wxGDIPlusMatrixData::IsIdentity() const
 783 {
 784     return m_matrix->IsIdentity() == TRUE ;
 785 }
 786
 787 //
 788 // transformation
 789 //
 790
 791 // add the translation to this matrix
 792 void wxGDIPlusMatrixData::Translate( wxDouble dx , wxDouble dy )
 793 {
 794     m_matrix->Translate(dx,dy);
 795 }
 796
 797 // add the scale to this matrix
 798 void wxGDIPlusMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 799 {
 800     m_matrix->Scale(xScale,yScale);
 801 }
 802
 803 // add the rotation to this matrix (radians)
 804 void wxGDIPlusMatrixData::Rotate( wxDouble angle )
 805 {
 806     m_matrix->Rotate( angle );
 807 }
 808
 809 //
 810 // apply the transforms
 811 //
 812
 813 // applies that matrix to the point
 814 void wxGDIPlusMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
 815 {
 816     PointF pt(*x,*y);
 817     m_matrix->TransformPoints(&pt);
 818     *x = pt.X;
 819     *y = pt.Y;
 820 }
 821
 822 // applies the matrix except for translations
 823 void wxGDIPlusMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
 824 {
 825     PointF pt(*dx,*dy);
 826     m_matrix->TransformVectors(&pt);
 827     *dx = pt.X;
 828     *dy = pt.Y;
 829 }
 830
 831 // returns the native representation
 832 void * wxGDIPlusMatrixData::GetNativeMatrix() const
 833 {
 834     return m_matrix;
 835 }
 836
 837 //-----------------------------------------------------------------------------
 838 // wxGDIPlusContext implementation
 839 //-----------------------------------------------------------------------------
 840
 841 IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusContext,wxGraphicsContext)
 842
 843 wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc  )
 844     : wxGraphicsContext(renderer)
 845 {
 846     Init();
 847     m_context = new Graphics( hdc);
 848     SetDefaults();
 849 }
 850
 851 wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd  )
 852     : wxGraphicsContext(renderer)
 853 {
 854     Init();
 855     m_context = new Graphics( hwnd);
 856     SetDefaults();
 857 }
 858
 859 wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr  )
 860     : wxGraphicsContext(renderer)
 861 {
 862     Init();
 863     m_context = gr;
 864     SetDefaults();
 865 }
 866
 867 wxGDIPlusContext::wxGDIPlusContext() : wxGraphicsContext(NULL)
 868 {
 869     Init();
 870 }
 871
 872 void wxGDIPlusContext::Init()
 873 {
 874     m_context = NULL;
 875     m_state1 = 0;
 876     m_state2= 0;
 877 }
 878
 879 void wxGDIPlusContext::SetDefaults()
 880 {
 881     m_context->SetSmoothingMode(SmoothingModeHighQuality);
 882     m_state1 = m_context->Save();
 883     m_state2 = m_context->Save();
 884 }
 885
 886 wxGDIPlusContext::~wxGDIPlusContext()
 887 {
 888     if ( m_context )
 889     {
 890         m_context->Restore( m_state2 );
 891         m_context->Restore( m_state1 );
 892         delete m_context;
 893     }
 894 }
 895
 896
 897 void wxGDIPlusContext::Clip( const wxRegion &region )
 898 {
 899     m_context->SetClip((HRGN)region.GetHRGN(),CombineModeIntersect);
 900 }
 901
 902 void wxGDIPlusContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 903 {
 904     m_context->SetClip(RectF(x,y,w,h),CombineModeIntersect);
 905 }
 906
 907 void wxGDIPlusContext::ResetClip()
 908 {
 909     m_context->ResetClip();
 910 }
 911
 912 void wxGDIPlusContext::StrokePath( const wxGraphicsPath& path )
 913 {
 914     if ( !m_pen.IsNull() )
 915     {
 916         m_context->DrawPath( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , (GraphicsPath*) path.GetNativePath() );
 917     }
 918 }
 919
 920 void wxGDIPlusContext::FillPath( const wxGraphicsPath& path , int fillStyle )
 921 {
 922     if ( !m_brush.IsNull() )
 923     {
 924         ((GraphicsPath*) path.GetNativePath())->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
 925         m_context->FillPath( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() ,
 926             (GraphicsPath*) path.GetNativePath());
 927     }
 928 }
 929
 930 void wxGDIPlusContext::Rotate( wxDouble angle )
 931 {
 932     m_context->RotateTransform( RadToDeg(angle) );
 933 }
 934
 935 void wxGDIPlusContext::Translate( wxDouble dx , wxDouble dy )
 936 {
 937     m_context->TranslateTransform( dx , dy );
 938 }
 939
 940 void wxGDIPlusContext::Scale( wxDouble xScale , wxDouble yScale )
 941 {
 942     m_context->ScaleTransform(xScale,yScale);
 943 }
 944
 945 void wxGDIPlusContext::PushState()
 946 {
 947     GraphicsState state = m_context->Save();
 948     m_stateStack.push_back(state);
 949 }
 950
 951 void wxGDIPlusContext::PopState()
 952 {
 953     GraphicsState state = m_stateStack.back();
 954     m_stateStack.pop_back();
 955     m_context->Restore(state);
 956 }
 957
 958 // the built-in conversions functions create non-premultiplied bitmaps, while GDIPlus needs them in the
 959 // premultiplied format, therefore in the failing cases we create a new bitmap using the non-premultiplied
 960 // bytes as parameter
 961
 962 void wxGDIPlusContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 963 {
 964     Bitmap* image = NULL;
 965     Bitmap* helper = NULL;
 966     if ( bmp.GetMask() )
 967     {
 968         Bitmap interim((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE()) ;
 969
 970         size_t width = interim.GetWidth();
 971         size_t height = interim.GetHeight();
 972         Rect bounds(0,0,width,height);
 973
 974         image = new Bitmap(width,height,PixelFormat32bppPARGB) ;
 975
 976         Bitmap interimMask((HBITMAP)bmp.GetMask()->GetMaskBitmap(),NULL);
 977         wxASSERT(interimMask.GetPixelFormat() == PixelFormat1bppIndexed);
 978
 979         BitmapData dataMask ;
 980         interimMask.LockBits(&bounds,ImageLockModeRead,
 981             interimMask.GetPixelFormat(),&dataMask);
 982
 983
 984         BitmapData imageData ;
 985         image->LockBits(&bounds,ImageLockModeWrite, PixelFormat32bppPARGB, &imageData);
 986
 987         BYTE maskPattern = 0 ;
 988         BYTE maskByte = 0;
 989         size_t maskIndex ;
 990
 991         for ( size_t y = 0 ; y < height ; ++y)
 992         {
 993             maskIndex = 0 ;
 994             for( size_t x = 0 ; x < width; ++x)
 995             {
 996                 if ( x % 8 == 0)
 997                 {
 998                     maskPattern = 0x80;
 999                     maskByte = *((BYTE*)dataMask.Scan0 + dataMask.Stride*y + maskIndex);
1000                     maskIndex++;
1001                 }
1002                 else
1003                     maskPattern = maskPattern >> 1;
1004
1005                 ARGB *dest = (ARGB*)((BYTE*)imageData.Scan0 + imageData.Stride*y + x*4);
1006                 if ( (maskByte & maskPattern) == 0 )
1007                     *dest = 0x00000000;
1008                 else
1009                 {
1010                     Color c ;
1011                     interim.GetPixel(x,y,&c) ;
1012                     *dest = (c.GetValue() | Color::AlphaMask);
1013                 }
1014             }
1015         }
1016
1017         image->UnlockBits(&imageData);
1018
1019         interimMask.UnlockBits(&dataMask);
1020         interim.UnlockBits(&dataMask);
1021     }
1022     else
1023     {
1024         image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());
1025         if ( GetPixelFormatSize(image->GetPixelFormat()) == 32 )
1026         {
1027             size_t width = image->GetWidth();
1028             size_t height = image->GetHeight();
1029             Rect bounds(0,0,width,height);
1030             BitmapData data ;
1031
1032             helper = image ;
1033             image = NULL ;
1034             helper->LockBits(&bounds, ImageLockModeRead,
1035                 helper->GetPixelFormat(),&data);
1036
1037             image = new Bitmap(data.Width, data.Height, data.Stride,
1038                 PixelFormat32bppARGB , (BYTE*) data.Scan0);
1039
1040             helper->UnlockBits(&data);
1041         }
1042     }
1043     if ( image )
1044         m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1045     delete image ;
1046     delete helper ;
1047 }
1048
1049 void wxGDIPlusContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1050 {
1051     HICON hIcon = (HICON)icon.GetHICON();
1052     ICONINFO iconInfo ;
1053     // IconInfo creates the bitmaps for color and mask, we must dispose of them after use
1054     if (!GetIconInfo(hIcon,&iconInfo))
1055         return;
1056
1057     BITMAP iconBmpData ;
1058     GetObject(iconInfo.hbmColor,sizeof(BITMAP),&iconBmpData);
1059     Bitmap interim(iconInfo.hbmColor,NULL);
1060
1061     Bitmap* image = NULL ;
1062
1063     if( GetPixelFormatSize(interim.GetPixelFormat())!= 32 )
1064     {
1065         image = Bitmap::FromHICON(hIcon);
1066     }
1067     else
1068     {
1069         size_t width = interim.GetWidth();
1070         size_t height = interim.GetHeight();
1071         Rect bounds(0,0,width,height);
1072         BitmapData data ;
1073
1074         interim.LockBits(&bounds, ImageLockModeRead,
1075             interim.GetPixelFormat(),&data);
1076         image = new Bitmap(data.Width, data.Height, data.Stride,
1077             PixelFormat32bppARGB , (BYTE*) data.Scan0);
1078         interim.UnlockBits(&data);
1079     }
1080
1081     m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1082
1083     delete image ;
1084     DeleteObject(iconInfo.hbmColor);
1085     DeleteObject(iconInfo.hbmMask);
1086 }
1087
1088 void wxGDIPlusContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1089 {
1090     if ( m_font.IsNull() || str.IsEmpty())
1091         return ;
1092
1093     wxWCharBuffer s = str.wc_str( *wxConvUI );
1094     m_context->DrawString( s , -1 , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont() ,
1095             PointF( x , y ) , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusBrush() );
1096     // TODO m_backgroundMode == wxSOLID
1097 }
1098
1099 void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1100                                      wxDouble *descent, wxDouble *externalLeading ) const
1101 {
1102     wxWCharBuffer s = str.wc_str( *wxConvUI );
1103     FontFamily ffamily ;
1104     Font* f = ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont();
1105
1106     f->GetFamily(&ffamily) ;
1107
1108     REAL factorY = m_context->GetDpiY() / 72.0 ;
1109
1110     REAL rDescent = ffamily.GetCellDescent(FontStyleRegular) *
1111         f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
1112     REAL rAscent = ffamily.GetCellAscent(FontStyleRegular) *
1113         f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
1114     REAL rHeight = ffamily.GetLineSpacing(FontStyleRegular) *
1115         f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
1116
1117     if ( height )
1118         *height = rHeight * factorY + 0.5 ;
1119     if ( descent )
1120         *descent = rDescent * factorY + 0.5 ;
1121     if ( externalLeading )
1122         *externalLeading = (rHeight - rAscent - rDescent) * factorY + 0.5 ;
1123     // measuring empty strings is not guaranteed, so do it by hand
1124     if ( str.IsEmpty())
1125     {
1126         if ( width )
1127             *width = 0 ;
1128     }
1129     else
1130     {
1131         // MeasureString does return a rectangle that is way too large, so it is
1132         // not usable here
1133         RectF layoutRect(0,0, 100000.0f, 100000.0f);
1134         StringFormat strFormat;
1135         CharacterRange strRange(0,wcslen(s));
1136         strFormat.SetMeasurableCharacterRanges(1,&strRange);
1137         Region region ;
1138         m_context->MeasureCharacterRanges(s, -1 , f,layoutRect, &strFormat,1,&region) ;
1139         RectF bbox ;
1140         region.GetBounds(&bbox,m_context);
1141         if ( width )
1142             *width = bbox.GetRight()-bbox.GetLeft()+0.5;
1143     }
1144 }
1145
1146 void wxGDIPlusContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1147 {
1148     widths.Empty();
1149     widths.Add(0, text.length());
1150
1151     if (text.empty())
1152         return;
1153
1154     Font* f = ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont();
1155     wxWCharBuffer ws = text.wc_str( *wxConvUI );
1156     size_t len = wcslen( ws ) ;
1157     wxASSERT_MSG(text.length() == len , wxT("GetPartialTextExtents not yet implemented for multichar situations"));
1158
1159     RectF layoutRect(0,0, 100000.0f, 100000.0f);
1160     StringFormat strFormat;
1161
1162     CharacterRange* ranges = new CharacterRange[len] ;
1163     Region* regions = new Region[len];
1164     for( size_t i = 0 ; i < len ; ++i)
1165     {
1166         ranges[i].First = i ;
1167         ranges[i].Length = 1 ;
1168     }
1169     strFormat.SetMeasurableCharacterRanges(len,ranges);
1170     m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,1,regions) ;
1171
1172     RectF bbox ;
1173     for ( size_t i = 0 ; i < len ; ++i)
1174     {
1175         regions[i].GetBounds(&bbox,m_context);
1176         widths[i] = bbox.GetRight()-bbox.GetLeft();
1177     }
1178 }
1179
1180 void* wxGDIPlusContext::GetNativeContext()
1181 {
1182         return m_context;
1183 }
1184
1185 // concatenates this transform with the current transform of this context
1186 void wxGDIPlusContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1187 {
1188     m_context->MultiplyTransform((Matrix*) matrix.GetNativeMatrix());
1189 }
1190
1191 // sets the transform of this context
1192 void wxGDIPlusContext::SetTransform( const wxGraphicsMatrix& matrix )
1193 {
1194     m_context->SetTransform((Matrix*) matrix.GetNativeMatrix());
1195 }
1196
1197 // gets the matrix of this context
1198 wxGraphicsMatrix wxGDIPlusContext::GetTransform() const
1199 {
1200     wxGraphicsMatrix matrix = CreateMatrix();
1201     m_context->GetTransform((Matrix*) matrix.GetNativeMatrix());
1202     return matrix;
1203 }
1204 //-----------------------------------------------------------------------------
1205 // wxGDIPlusRenderer declaration
1206 //-----------------------------------------------------------------------------
1207
1208 class WXDLLIMPEXP_CORE wxGDIPlusRenderer : public wxGraphicsRenderer
1209 {
1210 public :
1211     wxGDIPlusRenderer()
1212     {
1213         m_loaded = false;
1214         m_gditoken = NULL;
1215     }
1216
1217     virtual ~wxGDIPlusRenderer()
1218     {
1219         if (m_loaded)
1220         {
1221             Unload();
1222         }
1223     }
1224
1225     // Context
1226
1227     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1228
1229     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1230
1231     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1232
1233     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1234
1235     // Path
1236
1237     virtual wxGraphicsPath CreatePath();
1238
1239     // Matrix
1240
1241     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1242         wxDouble tx=0.0, wxDouble ty=0.0);
1243
1244
1245     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1246
1247     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1248
1249     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1250     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1251         const wxColour&c1, const wxColour&c2) ;
1252
1253     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1254     // with radius r and color cColor
1255     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1256         const wxColour &oColor, const wxColour &cColor) ;
1257
1258     // sets the font
1259     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1260 protected :
1261     void EnsureIsLoaded();
1262     void Load();
1263     void Unload();
1264
1265 private :
1266     bool m_loaded;
1267     DWORD m_gditoken;
1268
1269     DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusRenderer)
1270 } ;
1271
1272 //-----------------------------------------------------------------------------
1273 // wxGDIPlusRenderer implementation
1274 //-----------------------------------------------------------------------------
1275
1276 IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusRenderer,wxGraphicsRenderer)
1277
1278 static wxGDIPlusRenderer gs_GDIPlusRenderer;
1279
1280 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1281 {
1282     return &gs_GDIPlusRenderer;
1283 }
1284
1285 void wxGDIPlusRenderer::EnsureIsLoaded()
1286 {
1287     if (!m_loaded)
1288     {
1289         Load();
1290     }
1291 }
1292
1293 void wxGDIPlusRenderer::Load()
1294 {
1295     GdiplusStartupInput input;
1296     GdiplusStartupOutput output;
1297     GdiplusStartup(&m_gditoken,&input,&output);
1298     m_loaded = true;
1299 }
1300
1301 void wxGDIPlusRenderer::Unload()
1302 {
1303     if ( m_gditoken )
1304         GdiplusShutdown(m_gditoken);
1305 }
1306
1307 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxWindowDC& dc)
1308 {
1309     EnsureIsLoaded();
1310     return new wxGDIPlusContext(this,(HDC) dc.GetHDC());
1311 }
1312
1313 wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeContext( void * context )
1314 {
1315     EnsureIsLoaded();
1316     return new wxGDIPlusContext(this,(Graphics*) context);
1317 }
1318
1319
1320 wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeWindow( void * window )
1321 {
1322     EnsureIsLoaded();
1323     return new wxGDIPlusContext(this,(HWND) window);
1324 }
1325
1326 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( wxWindow* window )
1327 {
1328     EnsureIsLoaded();
1329     return new wxGDIPlusContext(this, (HWND) window->GetHWND() );
1330 }
1331
1332 // Path
1333
1334 wxGraphicsPath wxGDIPlusRenderer::CreatePath()
1335 {
1336     EnsureIsLoaded();
1337     wxGraphicsPath m;
1338     m.SetRefData( new wxGDIPlusPathData(this));
1339     return m;
1340 }
1341
1342
1343 // Matrix
1344
1345 wxGraphicsMatrix wxGDIPlusRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1346                                                            wxDouble tx, wxDouble ty)
1347
1348 {
1349     EnsureIsLoaded();
1350     wxGraphicsMatrix m;
1351     wxGDIPlusMatrixData* data = new wxGDIPlusMatrixData( this );
1352     data->Set( a,b,c,d,tx,ty ) ;
1353     m.SetRefData(data);
1354     return m;
1355 }
1356
1357 wxGraphicsPen wxGDIPlusRenderer::CreatePen(const wxPen& pen)
1358 {
1359     EnsureIsLoaded();
1360     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
1361         return wxNullGraphicsPen;
1362     else
1363     {
1364         wxGraphicsPen p;
1365         p.SetRefData(new wxGDIPlusPenData( this, pen ));
1366         return p;
1367     }
1368 }
1369
1370 wxGraphicsBrush wxGDIPlusRenderer::CreateBrush(const wxBrush& brush )
1371 {
1372     EnsureIsLoaded();
1373     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
1374         return wxNullGraphicsBrush;
1375     else
1376     {
1377         wxGraphicsBrush p;
1378         p.SetRefData(new wxGDIPlusBrushData( this, brush ));
1379         return p;
1380     }
1381 }
1382
1383 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1384 wxGraphicsBrush wxGDIPlusRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1385                                                                       const wxColour&c1, const wxColour&c2)
1386 {
1387     EnsureIsLoaded();
1388     wxGraphicsBrush p;
1389     wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
1390     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
1391     p.SetRefData(d);
1392     return p;
1393  }
1394
1395 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1396 // with radius r and color cColor
1397 wxGraphicsBrush wxGDIPlusRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1398                                                                       const wxColour &oColor, const wxColour &cColor)
1399 {
1400     EnsureIsLoaded();
1401     wxGraphicsBrush p;
1402     wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
1403     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
1404     p.SetRefData(d);
1405     return p;
1406 }
1407
1408 // sets the font
1409 wxGraphicsFont wxGDIPlusRenderer::CreateFont( const wxFont &font , const wxColour &col )
1410 {
1411     EnsureIsLoaded();
1412     if ( font.Ok() )
1413     {
1414         wxGraphicsFont p;
1415         p.SetRefData(new wxGDIPlusFontData( this , font, col ));
1416         return p;
1417     }
1418     else
1419         return wxNullGraphicsFont;
1420 }
1421
1422 #endif  // wxUSE_GRAPHICS_CONTEXT