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 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #include "wx/dc.h"
  19
  20 #if wxUSE_GRAPHICS_CONTEXT
  21
  22 #ifndef WX_PRECOMP
  23     #include "wx/msw/wrapcdlg.h"
  24     #include "wx/image.h"
  25     #include "wx/window.h"
  26     #include "wx/utils.h"
  27     #include "wx/dialog.h"
  28     #include "wx/app.h"
  29     #include "wx/bitmap.h"
  30     #include "wx/log.h"
  31     #include "wx/icon.h"
  32     #include "wx/module.h"
  33     // include all dc types that are used as a param
  34     #include "wx/dc.h"
  35     #include "wx/dcclient.h"
  36     #include "wx/dcmemory.h"
  37     #include "wx/dcprint.h"
  38 #endif
  39
  40 #include "wx/private/graphics.h"
  41 #include "wx/msw/wrapgdip.h"
  42 #include "wx/msw/dc.h"
  43 #if wxUSE_ENH_METAFILE
  44     #include "wx/msw/enhmeta.h"
  45 #endif
  46 #include "wx/dcgraph.h"
  47
  48 #include "wx/msw/private.h" // needs to be before #include <commdlg.h>
  49
  50 #if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
  51 #include <commdlg.h>
  52 #endif
  53
  54 #include "wx/stack.h"
  55
  56 WX_DECLARE_STACK(GraphicsState, GraphicsStates);
  57
  58 namespace
  59 {
  60
  61 //-----------------------------------------------------------------------------
  62 // constants
  63 //-----------------------------------------------------------------------------
  64
  65 const double RAD2DEG = 180.0 / M_PI;
  66
  67 //-----------------------------------------------------------------------------
  68 // Local functions
  69 //-----------------------------------------------------------------------------
  70
  71 inline double dmin(double a, double b) { return a < b ? a : b; }
  72 inline double dmax(double a, double b) { return a > b ? a : b; }
  73
  74 inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
  75 inline double RadToDeg(double deg) { return (deg * 180.0) / M_PI; }
  76
  77 // translate a wxColour to a Color
  78 inline Color wxColourToColor(const wxColour& col)
  79 {
  80     return Color(col.Alpha(), col.Red(), col.Green(), col.Blue());
  81 }
  82
  83 } // anonymous namespace
  84
  85 //-----------------------------------------------------------------------------
  86 // device context implementation
  87 //
  88 // more and more of the dc functionality should be implemented by calling
  89 // the appropricate wxGDIPlusContext, but we will have to do that step by step
  90 // also coordinate conversions should be moved to native matrix ops
  91 //-----------------------------------------------------------------------------
  92
  93 // we always stock two context states, one at entry, to be able to preserve the
  94 // state we were called with, the other one after changing to HI Graphics orientation
  95 // (this one is used for getting back clippings etc)
  96
  97 //-----------------------------------------------------------------------------
  98 // wxGraphicsPath implementation
  99 //-----------------------------------------------------------------------------
 100
 101 class wxGDIPlusContext;
 102
 103 class wxGDIPlusPathData : public wxGraphicsPathData
 104 {
 105 public :
 106     wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path = NULL);
 107     ~wxGDIPlusPathData();
 108
 109     virtual wxGraphicsObjectRefData *Clone() const;
 110
 111     //
 112     // These are the path primitives from which everything else can be constructed
 113     //
 114
 115     // begins a new subpath at (x,y)
 116     virtual void MoveToPoint( wxDouble x, wxDouble y );
 117
 118     // adds a straight line from the current point to (x,y)
 119     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 120
 121     // adds a cubic Bezier curve from the current point, using two control points and an end point
 122     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 123
 124
 125     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 126     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
 127
 128     // gets the last point of the current path, (0,0) if not yet set
 129     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 130
 131     // adds another path
 132     virtual void AddPath( const wxGraphicsPathData* path );
 133
 134     // closes the current sub-path
 135     virtual void CloseSubpath();
 136
 137     //
 138     // These are convenience functions which - if not available natively will be assembled
 139     // using the primitives from above
 140     //
 141
 142     // appends a rectangle as a new closed subpath
 143     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
 144     /*
 145
 146     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 147     virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
 148
 149     // 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)
 150     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )  ;
 151 */
 152
 153     // returns the native path
 154     virtual void * GetNativePath() const { return m_path; }
 155
 156     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 157     virtual void UnGetNativePath(void * WXUNUSED(path)) const {}
 158
 159     // transforms each point of this path by the matrix
 160     virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
 161
 162     // gets the bounding box enclosing all points (possibly including control points)
 163     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
 164
 165     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
 166
 167 private :
 168     GraphicsPath* m_path;
 169 };
 170
 171 class wxGDIPlusMatrixData : public wxGraphicsMatrixData
 172 {
 173 public :
 174     wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix = NULL) ;
 175     virtual ~wxGDIPlusMatrixData() ;
 176
 177     virtual wxGraphicsObjectRefData* Clone() const ;
 178
 179     // concatenates the matrix
 180     virtual void Concat( const wxGraphicsMatrixData *t );
 181
 182     // sets the matrix to the respective values
 183     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 184         wxDouble tx=0.0, wxDouble ty=0.0);
 185
 186     // gets the component valuess of the matrix
 187     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 188                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 189
 190     // makes this the inverse matrix
 191     virtual void Invert();
 192
 193     // returns true if the elements of the transformation matrix are equal ?
 194     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 195
 196     // return true if this is the identity matrix
 197     virtual bool IsIdentity() const;
 198
 199     //
 200     // transformation
 201     //
 202
 203     // add the translation to this matrix
 204     virtual void Translate( wxDouble dx , wxDouble dy );
 205
 206     // add the scale to this matrix
 207     virtual void Scale( wxDouble xScale , wxDouble yScale );
 208
 209     // add the rotation to this matrix (radians)
 210     virtual void Rotate( wxDouble angle );
 211
 212     //
 213     // apply the transforms
 214     //
 215
 216     // applies that matrix to the point
 217     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 218
 219     // applies the matrix except for translations
 220     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 221
 222     // returns the native representation
 223     virtual void * GetNativeMatrix() const;
 224 private:
 225     Matrix* m_matrix ;
 226 } ;
 227
 228 class wxGDIPlusPenData : public wxGraphicsObjectRefData
 229 {
 230 public:
 231     wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 232     ~wxGDIPlusPenData();
 233
 234     void Init();
 235
 236     virtual wxDouble GetWidth() { return m_width; }
 237     virtual Pen* GetGDIPlusPen() { return m_pen; }
 238
 239 protected :
 240     Pen* m_pen;
 241     Image* m_penImage;
 242     Brush* m_penBrush;
 243
 244     wxDouble m_width;
 245 };
 246
 247 class wxGDIPlusBrushData : public wxGraphicsObjectRefData
 248 {
 249 public:
 250     wxGDIPlusBrushData( wxGraphicsRenderer* renderer );
 251     wxGDIPlusBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 252     ~wxGDIPlusBrushData ();
 253
 254     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 255                                    wxDouble x2, wxDouble y2,
 256                                    const wxGraphicsGradientStops& stops);
 257     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 258                                    wxDouble xc, wxDouble yc,
 259                                    wxDouble radius,
 260                                    const wxGraphicsGradientStops& stops);
 261
 262     virtual Brush* GetGDIPlusBrush() { return m_brush; }
 263
 264 protected:
 265     virtual void Init();
 266
 267 private:
 268     // common part of Create{Linear,Radial}GradientBrush()
 269     template <typename T>
 270     void SetGradientStops(T *brush, const wxGraphicsGradientStops& stops);
 271
 272     Brush* m_brush;
 273     Image* m_brushImage;
 274     GraphicsPath* m_brushPath;
 275 };
 276
 277 class WXDLLIMPEXP_CORE wxGDIPlusBitmapData : public wxGraphicsObjectRefData
 278 {
 279 public:
 280     wxGDIPlusBitmapData( wxGraphicsRenderer* renderer, Bitmap* bitmap );
 281     wxGDIPlusBitmapData( wxGraphicsRenderer* renderer, const wxBitmap &bmp );
 282     ~wxGDIPlusBitmapData ();
 283
 284     virtual Bitmap* GetGDIPlusBitmap() { return m_bitmap; }
 285
 286 private :
 287     Bitmap* m_bitmap;
 288     Bitmap* m_helper;
 289 };
 290
 291 class wxGDIPlusFontData : public wxGraphicsObjectRefData
 292 {
 293 public:
 294     wxGDIPlusFontData( wxGraphicsRenderer* renderer,
 295                        const wxGDIPlusContext* gc,
 296                        const wxFont &font,
 297                        const wxColour& col );
 298     ~wxGDIPlusFontData();
 299
 300     virtual Brush* GetGDIPlusBrush() { return m_textBrush; }
 301     virtual Font* GetGDIPlusFont() { return m_font; }
 302 private :
 303     Brush* m_textBrush;
 304     Font* m_font;
 305 };
 306
 307 class wxGDIPlusContext : public wxGraphicsContext
 308 {
 309 public:
 310     wxGDIPlusContext( wxGraphicsRenderer* renderer, const wxDC& dc );
 311     wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc, wxDouble width, wxDouble height );
 312     wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd );
 313     wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr);
 314     wxGDIPlusContext();
 315
 316     virtual ~wxGDIPlusContext();
 317
 318     virtual void Clip( const wxRegion &region );
 319     // clips drawings to the rect
 320     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 321
 322     // resets the clipping to original extent
 323     virtual void ResetClip();
 324
 325     virtual void * GetNativeContext();
 326
 327     virtual void StrokePath( const wxGraphicsPath& p );
 328     virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
 329
 330     // stroke lines connecting each of the points
 331     virtual void StrokeLines( size_t n, const wxPoint2DDouble *points);
 332
 333     // draws a polygon
 334     virtual void DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
 335
 336     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 337
 338     virtual bool SetCompositionMode(wxCompositionMode op);
 339
 340     virtual void BeginLayer(wxDouble opacity);
 341
 342     virtual void EndLayer();
 343
 344     virtual void Translate( wxDouble dx , wxDouble dy );
 345     virtual void Scale( wxDouble xScale , wxDouble yScale );
 346     virtual void Rotate( wxDouble angle );
 347
 348     // concatenates this transform with the current transform of this context
 349     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
 350
 351     // sets the transform of this context
 352     virtual void SetTransform( const wxGraphicsMatrix& matrix );
 353
 354     // gets the matrix of this context
 355     virtual wxGraphicsMatrix GetTransform() const;
 356
 357     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 358     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 359     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 360     virtual void PushState();
 361     virtual void PopState();
 362
 363     // sets the font of this context
 364     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const;
 365
 366     virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 367         wxDouble *descent, wxDouble *externalLeading ) const;
 368     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
 369     virtual bool ShouldOffset() const;
 370     virtual void GetSize( wxDouble* width, wxDouble *height );
 371
 372     Graphics* GetGraphics() const { return m_context; }
 373
 374 protected:
 375
 376     wxDouble m_fontScaleRatio;
 377
 378 private:
 379     void    Init();
 380     void    SetDefaults();
 381
 382     virtual void DoDrawText(const wxString& str, wxDouble x, wxDouble y)
 383         { DoDrawFilledText(str, x, y, wxNullGraphicsBrush); }
 384     virtual void DoDrawFilledText(const wxString& str, wxDouble x, wxDouble y,
 385                                   const wxGraphicsBrush& backgroundBrush);
 386
 387     Graphics* m_context;
 388     GraphicsStates m_stateStack;
 389     GraphicsState m_state1;
 390     GraphicsState m_state2;
 391
 392     wxDouble m_width;
 393     wxDouble m_height;
 394
 395     DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusContext)
 396 };
 397
 398 class wxGDIPlusMeasuringContext : public wxGDIPlusContext
 399 {
 400 public:
 401     wxGDIPlusMeasuringContext( wxGraphicsRenderer* renderer ) : wxGDIPlusContext( renderer , m_hdc = GetDC(NULL), 1000, 1000 )
 402     {
 403     }
 404     wxGDIPlusMeasuringContext()
 405     {
 406     }
 407
 408     virtual ~wxGDIPlusMeasuringContext()
 409     {
 410         ReleaseDC( NULL, m_hdc );
 411     }
 412
 413 private:
 414     HDC m_hdc ;
 415     DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusMeasuringContext)
 416 } ;
 417
 418 class wxGDIPlusPrintingContext : public wxGDIPlusContext
 419 {
 420 public:
 421     wxGDIPlusPrintingContext( wxGraphicsRenderer* renderer, const wxDC& dc );
 422     virtual ~wxGDIPlusPrintingContext() { }
 423 protected:
 424 };
 425
 426 //-----------------------------------------------------------------------------
 427 // wxGDIPlusRenderer declaration
 428 //-----------------------------------------------------------------------------
 429
 430 class wxGDIPlusRenderer : public wxGraphicsRenderer
 431 {
 432 public :
 433     wxGDIPlusRenderer()
 434     {
 435         m_loaded = -1;
 436         m_gditoken = 0;
 437     }
 438
 439     virtual ~wxGDIPlusRenderer()
 440     {
 441         if ( m_loaded == 1 )
 442         {
 443             Unload();
 444         }
 445     }
 446
 447     // Context
 448
 449     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
 450
 451     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
 452
 453 #if wxUSE_PRINTING_ARCHITECTURE
 454     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
 455 #endif
 456
 457 #if wxUSE_ENH_METAFILE
 458     virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
 459 #endif
 460
 461     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
 462
 463     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
 464
 465     virtual wxGraphicsContext * CreateContext( wxWindow* window );
 466
 467     virtual wxGraphicsContext * CreateMeasuringContext();
 468
 469     // Path
 470
 471     virtual wxGraphicsPath CreatePath();
 472
 473     // Matrix
 474
 475     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 476         wxDouble tx=0.0, wxDouble ty=0.0);
 477
 478
 479     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
 480
 481     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
 482
 483     virtual wxGraphicsBrush
 484     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 485                               wxDouble x2, wxDouble y2,
 486                               const wxGraphicsGradientStops& stops);
 487
 488     virtual wxGraphicsBrush
 489     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 490                               wxDouble xc, wxDouble yc,
 491                               wxDouble radius,
 492                               const wxGraphicsGradientStops& stops);
 493
 494     // create a native bitmap representation
 495     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
 496
 497     // stub: should not be called directly
 498     virtual wxGraphicsFont CreateFont( const wxFont& WXUNUSED(font),
 499                                        const wxColour& WXUNUSED(col) )
 500         { wxFAIL; return wxNullGraphicsFont; }
 501
 502     // this is used to really create the font
 503     wxGraphicsFont CreateGDIPlusFont( const wxGDIPlusContext* gc,
 504                                       const wxFont &font,
 505                                       const wxColour &col );
 506
 507     // create a graphics bitmap from a native bitmap
 508     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
 509
 510     // create a subimage from a native image representation
 511     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
 512
 513 protected :
 514     bool EnsureIsLoaded();
 515     void Load();
 516     void Unload();
 517     friend class wxGDIPlusRendererModule;
 518
 519 private :
 520     int m_loaded;
 521     ULONG_PTR m_gditoken;
 522
 523     DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusRenderer)
 524 } ;
 525
 526 //-----------------------------------------------------------------------------
 527 // wxGDIPlusPen implementation
 528 //-----------------------------------------------------------------------------
 529
 530 wxGDIPlusPenData::~wxGDIPlusPenData()
 531 {
 532     delete m_pen;
 533     delete m_penImage;
 534     delete m_penBrush;
 535 }
 536
 537 void wxGDIPlusPenData::Init()
 538 {
 539     m_pen = NULL ;
 540     m_penImage = NULL;
 541     m_penBrush = NULL;
 542 }
 543
 544 wxGDIPlusPenData::wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
 545 : wxGraphicsObjectRefData(renderer)
 546 {
 547     Init();
 548     m_width = pen.GetWidth();
 549     if (m_width <= 0.0)
 550         m_width = 0.1;
 551
 552     m_pen = new Pen(wxColourToColor(pen.GetColour()), m_width );
 553
 554     LineCap cap;
 555     switch ( pen.GetCap() )
 556     {
 557     case wxCAP_ROUND :
 558         cap = LineCapRound;
 559         break;
 560
 561     case wxCAP_PROJECTING :
 562         cap = LineCapSquare;
 563         break;
 564
 565     case wxCAP_BUTT :
 566         cap = LineCapFlat; // TODO verify
 567         break;
 568
 569     default :
 570         cap = LineCapFlat;
 571         break;
 572     }
 573     m_pen->SetLineCap(cap,cap, DashCapFlat);
 574
 575     LineJoin join;
 576     switch ( pen.GetJoin() )
 577     {
 578     case wxJOIN_BEVEL :
 579         join = LineJoinBevel;
 580         break;
 581
 582     case wxJOIN_MITER :
 583         join = LineJoinMiter;
 584         break;
 585
 586     case wxJOIN_ROUND :
 587         join = LineJoinRound;
 588         break;
 589
 590     default :
 591         join = LineJoinMiter;
 592         break;
 593     }
 594
 595     m_pen->SetLineJoin(join);
 596
 597     m_pen->SetDashStyle(DashStyleSolid);
 598
 599     DashStyle dashStyle = DashStyleSolid;
 600     switch ( pen.GetStyle() )
 601     {
 602     case wxSOLID :
 603         break;
 604
 605     case wxDOT :
 606         dashStyle = DashStyleDot;
 607         break;
 608
 609     case wxLONG_DASH :
 610         dashStyle = DashStyleDash; // TODO verify
 611         break;
 612
 613     case wxSHORT_DASH :
 614         dashStyle = DashStyleDash;
 615         break;
 616
 617     case wxDOT_DASH :
 618         dashStyle = DashStyleDashDot;
 619         break;
 620     case wxUSER_DASH :
 621         {
 622             dashStyle = DashStyleCustom;
 623             wxDash *dashes;
 624             int count = pen.GetDashes( &dashes );
 625             if ((dashes != NULL) && (count > 0))
 626             {
 627                 REAL *userLengths = new REAL[count];
 628                 for ( int i = 0; i < count; ++i )
 629                 {
 630                     userLengths[i] = dashes[i];
 631                 }
 632                 m_pen->SetDashPattern( userLengths, count);
 633                 delete[] userLengths;
 634             }
 635         }
 636         break;
 637     case wxSTIPPLE :
 638         {
 639             wxBitmap* bmp = pen.GetStipple();
 640             if ( bmp && bmp->Ok() )
 641             {
 642                 m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),
 643 #if wxUSE_PALETTE
 644                     (HPALETTE)bmp->GetPalette()->GetHPALETTE()
 645 #else
 646                     NULL
 647 #endif
 648                 );
 649                 m_penBrush = new TextureBrush(m_penImage);
 650                 m_pen->SetBrush( m_penBrush );
 651             }
 652
 653         }
 654         break;
 655     default :
 656         if ( pen.GetStyle() >= wxFIRST_HATCH && pen.GetStyle() <= wxLAST_HATCH )
 657         {
 658             HatchStyle style = HatchStyleHorizontal;
 659             switch( pen.GetStyle() )
 660             {
 661             case wxBDIAGONAL_HATCH :
 662                 style = HatchStyleBackwardDiagonal;
 663                 break ;
 664             case wxCROSSDIAG_HATCH :
 665                 style = HatchStyleDiagonalCross;
 666                 break ;
 667             case wxFDIAGONAL_HATCH :
 668                 style = HatchStyleForwardDiagonal;
 669                 break ;
 670             case wxCROSS_HATCH :
 671                 style = HatchStyleCross;
 672                 break ;
 673             case wxHORIZONTAL_HATCH :
 674                 style = HatchStyleHorizontal;
 675                 break ;
 676             case wxVERTICAL_HATCH :
 677                 style = HatchStyleVertical;
 678                 break ;
 679
 680             }
 681             m_penBrush = new HatchBrush
 682                              (
 683                                 style,
 684                                 wxColourToColor(pen.GetColour()),
 685                                 Color::Transparent
 686                              );
 687             m_pen->SetBrush( m_penBrush );
 688         }
 689         break;
 690     }
 691     if ( dashStyle != DashStyleSolid )
 692         m_pen->SetDashStyle(dashStyle);
 693 }
 694
 695 //-----------------------------------------------------------------------------
 696 // wxGDIPlusBrush implementation
 697 //-----------------------------------------------------------------------------
 698
 699 wxGDIPlusBrushData::wxGDIPlusBrushData( wxGraphicsRenderer* renderer )
 700 : wxGraphicsObjectRefData(renderer)
 701 {
 702     Init();
 703 }
 704
 705 wxGDIPlusBrushData::wxGDIPlusBrushData( wxGraphicsRenderer* renderer , const wxBrush &brush )
 706 : wxGraphicsObjectRefData(renderer)
 707 {
 708     Init();
 709     if ( brush.GetStyle() == wxSOLID)
 710     {
 711         m_brush = new SolidBrush(wxColourToColor( brush.GetColour()));
 712     }
 713     else if ( brush.IsHatch() )
 714     {
 715         HatchStyle style = HatchStyleHorizontal;
 716         switch( brush.GetStyle() )
 717         {
 718         case wxBDIAGONAL_HATCH :
 719             style = HatchStyleBackwardDiagonal;
 720             break ;
 721         case wxCROSSDIAG_HATCH :
 722             style = HatchStyleDiagonalCross;
 723             break ;
 724         case wxFDIAGONAL_HATCH :
 725             style = HatchStyleForwardDiagonal;
 726             break ;
 727         case wxCROSS_HATCH :
 728             style = HatchStyleCross;
 729             break ;
 730         case wxHORIZONTAL_HATCH :
 731             style = HatchStyleHorizontal;
 732             break ;
 733         case wxVERTICAL_HATCH :
 734             style = HatchStyleVertical;
 735             break ;
 736
 737         }
 738         m_brush = new HatchBrush
 739                       (
 740                         style,
 741                         wxColourToColor(brush.GetColour()),
 742                         Color::Transparent
 743                       );
 744     }
 745     else
 746     {
 747         wxBitmap* bmp = brush.GetStipple();
 748         if ( bmp && bmp->Ok() )
 749         {
 750             wxDELETE( m_brushImage );
 751             m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),
 752 #if wxUSE_PALETTE
 753                 (HPALETTE)bmp->GetPalette()->GetHPALETTE()
 754 #else
 755                 NULL
 756 #endif
 757             );
 758             m_brush = new TextureBrush(m_brushImage);
 759         }
 760     }
 761 }
 762
 763 wxGDIPlusBrushData::~wxGDIPlusBrushData()
 764 {
 765     delete m_brush;
 766     delete m_brushImage;
 767     delete m_brushPath;
 768 };
 769
 770 void wxGDIPlusBrushData::Init()
 771 {
 772     m_brush = NULL;
 773     m_brushImage= NULL;
 774     m_brushPath= NULL;
 775 }
 776
 777 template <typename T>
 778 void
 779 wxGDIPlusBrushData::SetGradientStops(T *brush,
 780         const wxGraphicsGradientStops& stops)
 781 {
 782     const unsigned numStops = stops.GetCount();
 783     if ( numStops <= 2 )
 784     {
 785         // initial and final colours are set during the brush creation, nothing
 786         // more to do
 787         return;
 788     }
 789
 790     wxVector<Color> colors(numStops);
 791     wxVector<REAL> positions(numStops);
 792
 793     for ( unsigned i = 0; i < numStops; i++ )
 794     {
 795         wxGraphicsGradientStop stop = stops.Item(i);
 796
 797         colors[i] = wxColourToColor(stop.GetColour());
 798         positions[i] = stop.GetPosition();
 799     }
 800
 801     brush->SetInterpolationColors(&colors[0], &positions[0], numStops);
 802 }
 803
 804 void
 805 wxGDIPlusBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 806                                               wxDouble x2, wxDouble y2,
 807                                               const wxGraphicsGradientStops& stops)
 808 {
 809     LinearGradientBrush * const
 810         brush = new LinearGradientBrush(PointF(x1, y1) , PointF(x2, y2),
 811                                         wxColourToColor(stops.GetStartColour()),
 812                                         wxColourToColor(stops.GetEndColour()));
 813     m_brush =  brush;
 814
 815     SetGradientStops(brush, stops);
 816 }
 817
 818 void
 819 wxGDIPlusBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 820                                               wxDouble xc, wxDouble yc,
 821                                               wxDouble radius,
 822                                               const wxGraphicsGradientStops& stops)
 823 {
 824     m_brushPath = new GraphicsPath();
 825     m_brushPath->AddEllipse( (REAL)(xc-radius), (REAL)(yc-radius),
 826                              (REAL)(2*radius), (REAL)(2*radius));
 827
 828     PathGradientBrush * const brush = new PathGradientBrush(m_brushPath);
 829     m_brush = brush;
 830     brush->SetCenterPoint(PointF(xo, yo));
 831     brush->SetCenterColor(wxColourToColor(stops.GetStartColour()));
 832
 833     const Color col(wxColourToColor(stops.GetEndColour()));
 834     int count = 1;
 835     brush->SetSurroundColors(&col, &count);
 836
 837     SetGradientStops(brush, stops);
 838 }
 839
 840 //-----------------------------------------------------------------------------
 841 // wxGDIPlusFont implementation
 842 //-----------------------------------------------------------------------------
 843
 844 wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer,
 845                                       const wxGDIPlusContext* gc,
 846                                       const wxFont &font,
 847                                       const wxColour& col )
 848     : wxGraphicsObjectRefData( renderer )
 849 {
 850     wxWCharBuffer s = font.GetFaceName().wc_str( *wxConvUI );
 851     int style = FontStyleRegular;
 852     if ( font.GetStyle() == wxFONTSTYLE_ITALIC )
 853         style |= FontStyleItalic;
 854     if ( font.GetUnderlined() )
 855         style |= FontStyleUnderline;
 856     if ( font.GetWeight() == wxFONTWEIGHT_BOLD )
 857         style |= FontStyleBold;
 858
 859     Graphics* context = gc->GetGraphics();
 860
 861     Unit fontUnit = context->GetPageUnit();
 862     // if fontUnit is UnitDisplay, then specify UnitPixel, otherwise
 863     // you'll get a "InvalidParameter" from GDI+
 864     if ( fontUnit == UnitDisplay )
 865         fontUnit = UnitPixel;
 866
 867     REAL points = font.GetPointSize();
 868
 869     // This scaling is needed when we use unit other than the
 870     // default UnitPoint. It works for both display and printing.
 871     REAL size = points * (100.0 / 72.0);
 872
 873     // NB: font unit should match context's unit. We can use UnitPixel,
 874     //     as that is what the print context should use.
 875     m_font = new Font( s, size, style, fontUnit );
 876
 877     m_textBrush = new SolidBrush(wxColourToColor(col));
 878 }
 879
 880 wxGDIPlusFontData::~wxGDIPlusFontData()
 881 {
 882     delete m_textBrush;
 883     delete m_font;
 884 }
 885
 886 // the built-in conversions functions create non-premultiplied bitmaps, while GDIPlus needs them in the
 887 // premultiplied format, therefore in the failing cases we create a new bitmap using the non-premultiplied
 888 // bytes as parameter, since there is no real copying of the data going in, only references are stored
 889 // m_helper has to be kept alive as well
 890
 891 //-----------------------------------------------------------------------------
 892 // wxGDIPlusBitmapData implementation
 893 //-----------------------------------------------------------------------------
 894
 895 wxGDIPlusBitmapData::wxGDIPlusBitmapData( wxGraphicsRenderer* renderer, Bitmap* bitmap ) :
 896     wxGraphicsObjectRefData( renderer ), m_bitmap( bitmap )
 897 {
 898     m_helper = NULL;
 899 }
 900
 901 wxGDIPlusBitmapData::wxGDIPlusBitmapData( wxGraphicsRenderer* renderer,
 902                         const wxBitmap &bmp) : wxGraphicsObjectRefData( renderer )
 903 {
 904     m_bitmap = NULL;
 905     m_helper = NULL;
 906
 907     Bitmap* image = NULL;
 908     if ( bmp.GetMask() )
 909     {
 910         Bitmap interim((HBITMAP)bmp.GetHBITMAP(),
 911 #if wxUSE_PALETTE
 912             (HPALETTE)bmp.GetPalette()->GetHPALETTE()
 913 #else
 914             NULL
 915 #endif
 916         );
 917
 918         size_t width = interim.GetWidth();
 919         size_t height = interim.GetHeight();
 920         Rect bounds(0,0,width,height);
 921
 922         image = new Bitmap(width,height,PixelFormat32bppPARGB) ;
 923
 924         Bitmap interimMask((HBITMAP)bmp.GetMask()->GetMaskBitmap(),NULL);
 925         wxASSERT(interimMask.GetPixelFormat() == PixelFormat1bppIndexed);
 926
 927         BitmapData dataMask ;
 928         interimMask.LockBits(&bounds,ImageLockModeRead,
 929             interimMask.GetPixelFormat(),&dataMask);
 930
 931
 932         BitmapData imageData ;
 933         image->LockBits(&bounds,ImageLockModeWrite, PixelFormat32bppPARGB, &imageData);
 934
 935         BYTE maskPattern = 0 ;
 936         BYTE maskByte = 0;
 937         size_t maskIndex ;
 938
 939         for ( size_t y = 0 ; y < height ; ++y)
 940         {
 941             maskIndex = 0 ;
 942             for( size_t x = 0 ; x < width; ++x)
 943             {
 944                 if ( x % 8 == 0)
 945                 {
 946                     maskPattern = 0x80;
 947                     maskByte = *((BYTE*)dataMask.Scan0 + dataMask.Stride*y + maskIndex);
 948                     maskIndex++;
 949                 }
 950                 else
 951                     maskPattern = maskPattern >> 1;
 952
 953                 ARGB *dest = (ARGB*)((BYTE*)imageData.Scan0 + imageData.Stride*y + x*4);
 954                 if ( (maskByte & maskPattern) == 0 )
 955                     *dest = 0x00000000;
 956                 else
 957                 {
 958                     Color c ;
 959                     interim.GetPixel(x,y,&c) ;
 960                     *dest = (c.GetValue() | Color::AlphaMask);
 961                 }
 962             }
 963         }
 964
 965         image->UnlockBits(&imageData);
 966
 967         interimMask.UnlockBits(&dataMask);
 968         interim.UnlockBits(&dataMask);
 969     }
 970     else
 971     {
 972         image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),
 973 #if wxUSE_PALETTE
 974             (HPALETTE)bmp.GetPalette()->GetHPALETTE()
 975 #else
 976             NULL
 977 #endif
 978         );
 979         if ( bmp.HasAlpha() && GetPixelFormatSize(image->GetPixelFormat()) == 32 )
 980         {
 981             size_t width = image->GetWidth();
 982             size_t height = image->GetHeight();
 983             Rect bounds(0,0,width,height);
 984             static BitmapData data ;
 985
 986             m_helper = image ;
 987             image = NULL ;
 988             m_helper->LockBits(&bounds, ImageLockModeRead,
 989                 m_helper->GetPixelFormat(),&data);
 990
 991             image = new Bitmap(data.Width, data.Height, data.Stride,
 992                 PixelFormat32bppPARGB , (BYTE*) data.Scan0);
 993
 994             m_helper->UnlockBits(&data);
 995         }
 996     }
 997     if ( image )
 998         m_bitmap = image;
 999 }
1000
1001 wxGDIPlusBitmapData::~wxGDIPlusBitmapData()
1002 {
1003     delete m_bitmap;
1004     delete m_helper;
1005 }
1006
1007 //-----------------------------------------------------------------------------
1008 // wxGDIPlusPath implementation
1009 //-----------------------------------------------------------------------------
1010
1011 wxGDIPlusPathData::wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path ) : wxGraphicsPathData(renderer)
1012 {
1013     if ( path )
1014         m_path = path;
1015     else
1016         m_path = new GraphicsPath();
1017 }
1018
1019 wxGDIPlusPathData::~wxGDIPlusPathData()
1020 {
1021     delete m_path;
1022 }
1023
1024 wxGraphicsObjectRefData* wxGDIPlusPathData::Clone() const
1025 {
1026     return new wxGDIPlusPathData( GetRenderer() , m_path->Clone());
1027 }
1028
1029 //
1030 // The Primitives
1031 //
1032
1033 void wxGDIPlusPathData::MoveToPoint( wxDouble x , wxDouble y )
1034 {
1035     m_path->StartFigure();
1036     m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
1037 }
1038
1039 void wxGDIPlusPathData::AddLineToPoint( wxDouble x , wxDouble y )
1040 {
1041     m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
1042 }
1043
1044 void wxGDIPlusPathData::CloseSubpath()
1045 {
1046     m_path->CloseFigure();
1047 }
1048
1049 void wxGDIPlusPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1050 {
1051     PointF c1(cx1,cy1);
1052     PointF c2(cx2,cy2);
1053     PointF end(x,y);
1054     PointF start;
1055     m_path->GetLastPoint(&start);
1056     m_path->AddBezier(start,c1,c2,end);
1057 }
1058
1059 // gets the last point of the current path, (0,0) if not yet set
1060 void wxGDIPlusPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1061 {
1062     PointF start;
1063     m_path->GetLastPoint(&start);
1064     *x = start.X ;
1065     *y = start.Y ;
1066 }
1067
1068 void wxGDIPlusPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
1069 {
1070     double sweepAngle = endAngle - startAngle ;
1071     if( fabs(sweepAngle) >= 2*M_PI)
1072     {
1073         sweepAngle = 2 * M_PI;
1074     }
1075     else
1076     {
1077         if ( clockwise )
1078         {
1079             if( sweepAngle < 0 )
1080                 sweepAngle += 2 * M_PI;
1081         }
1082         else
1083         {
1084             if( sweepAngle > 0 )
1085                 sweepAngle -= 2 * M_PI;
1086
1087         }
1088    }
1089    m_path->AddArc((REAL) (x-r),(REAL) (y-r),(REAL) (2*r),(REAL) (2*r),RadToDeg(startAngle),RadToDeg(sweepAngle));
1090 }
1091
1092 void wxGDIPlusPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1093 {
1094     m_path->AddRectangle(RectF(x,y,w,h));
1095 }
1096
1097 void wxGDIPlusPathData::AddPath( const wxGraphicsPathData* path )
1098 {
1099     m_path->AddPath( (GraphicsPath*) path->GetNativePath(), FALSE);
1100 }
1101
1102
1103 // transforms each point of this path by the matrix
1104 void wxGDIPlusPathData::Transform( const wxGraphicsMatrixData* matrix )
1105 {
1106     m_path->Transform( (Matrix*) matrix->GetNativeMatrix() );
1107 }
1108
1109 // gets the bounding box enclosing all points (possibly including control points)
1110 void wxGDIPlusPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1111 {
1112     RectF bounds;
1113     m_path->GetBounds( &bounds, NULL, NULL) ;
1114     *x = bounds.X;
1115     *y = bounds.Y;
1116     *w = bounds.Width;
1117     *h = bounds.Height;
1118 }
1119
1120 bool wxGDIPlusPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
1121 {
1122     m_path->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
1123     return m_path->IsVisible( (FLOAT) x,(FLOAT) y) == TRUE ;
1124 }
1125
1126 //-----------------------------------------------------------------------------
1127 // wxGDIPlusMatrixData implementation
1128 //-----------------------------------------------------------------------------
1129
1130 wxGDIPlusMatrixData::wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix )
1131     : wxGraphicsMatrixData(renderer)
1132 {
1133     if ( matrix )
1134         m_matrix = matrix ;
1135     else
1136         m_matrix = new Matrix();
1137 }
1138
1139 wxGDIPlusMatrixData::~wxGDIPlusMatrixData()
1140 {
1141     delete m_matrix;
1142 }
1143
1144 wxGraphicsObjectRefData *wxGDIPlusMatrixData::Clone() const
1145 {
1146     return new wxGDIPlusMatrixData( GetRenderer(), m_matrix->Clone());
1147 }
1148
1149 // concatenates the matrix
1150 void wxGDIPlusMatrixData::Concat( const wxGraphicsMatrixData *t )
1151 {
1152     m_matrix->Multiply( (Matrix*) t->GetNativeMatrix());
1153 }
1154
1155 // sets the matrix to the respective values
1156 void wxGDIPlusMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1157                  wxDouble tx, wxDouble ty)
1158 {
1159     m_matrix->SetElements(a,b,c,d,tx,ty);
1160 }
1161
1162 // gets the component valuess of the matrix
1163 void wxGDIPlusMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
1164                               wxDouble* d, wxDouble* tx, wxDouble* ty) const
1165 {
1166     REAL elements[6];
1167     m_matrix->GetElements(elements);
1168     if (a)  *a = elements[0];
1169     if (b)  *b = elements[1];
1170     if (c)  *c = elements[2];
1171     if (d)  *d = elements[3];
1172     if (tx) *tx= elements[4];
1173     if (ty) *ty= elements[5];
1174 }
1175
1176 // makes this the inverse matrix
1177 void wxGDIPlusMatrixData::Invert()
1178 {
1179     m_matrix->Invert();
1180 }
1181
1182 // returns true if the elements of the transformation matrix are equal ?
1183 bool wxGDIPlusMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1184 {
1185     return m_matrix->Equals((Matrix*) t->GetNativeMatrix())== TRUE ;
1186 }
1187
1188 // return true if this is the identity matrix
1189 bool wxGDIPlusMatrixData::IsIdentity() const
1190 {
1191     return m_matrix->IsIdentity() == TRUE ;
1192 }
1193
1194 //
1195 // transformation
1196 //
1197
1198 // add the translation to this matrix
1199 void wxGDIPlusMatrixData::Translate( wxDouble dx , wxDouble dy )
1200 {
1201     m_matrix->Translate(dx,dy);
1202 }
1203
1204 // add the scale to this matrix
1205 void wxGDIPlusMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1206 {
1207     m_matrix->Scale(xScale,yScale);
1208 }
1209
1210 // add the rotation to this matrix (radians)
1211 void wxGDIPlusMatrixData::Rotate( wxDouble angle )
1212 {
1213     m_matrix->Rotate( RadToDeg(angle) );
1214 }
1215
1216 //
1217 // apply the transforms
1218 //
1219
1220 // applies that matrix to the point
1221 void wxGDIPlusMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1222 {
1223     PointF pt(*x,*y);
1224     m_matrix->TransformPoints(&pt);
1225     *x = pt.X;
1226     *y = pt.Y;
1227 }
1228
1229 // applies the matrix except for translations
1230 void wxGDIPlusMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1231 {
1232     PointF pt(*dx,*dy);
1233     m_matrix->TransformVectors(&pt);
1234     *dx = pt.X;
1235     *dy = pt.Y;
1236 }
1237
1238 // returns the native representation
1239 void * wxGDIPlusMatrixData::GetNativeMatrix() const
1240 {
1241     return m_matrix;
1242 }
1243
1244 //-----------------------------------------------------------------------------
1245 // wxGDIPlusContext implementation
1246 //-----------------------------------------------------------------------------
1247
1248 IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusContext,wxGraphicsContext)
1249 IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusMeasuringContext,wxGDIPlusContext)
1250
1251 class wxGDIPlusOffsetHelper
1252 {
1253 public :
1254     wxGDIPlusOffsetHelper( Graphics* gr , bool offset )
1255     {
1256         m_gr = gr;
1257         m_offset = offset;
1258         if ( m_offset )
1259             m_gr->TranslateTransform( 0.5, 0.5 );
1260     }
1261     ~wxGDIPlusOffsetHelper( )
1262     {
1263         if ( m_offset )
1264             m_gr->TranslateTransform( -0.5, -0.5 );
1265     }
1266 public :
1267     Graphics* m_gr;
1268     bool m_offset;
1269 } ;
1270
1271 wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc, wxDouble width, wxDouble height   )
1272     : wxGraphicsContext(renderer)
1273 {
1274     Init();
1275     m_context = new Graphics( hdc);
1276     m_width = width;
1277     m_height = height;
1278     SetDefaults();
1279 }
1280
1281 wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, const wxDC& dc )
1282     : wxGraphicsContext(renderer)
1283 {
1284     Init();
1285
1286     wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
1287     HDC hdc = (HDC) msw->GetHDC();
1288
1289     m_context = new Graphics(hdc);
1290     wxSize sz = dc.GetSize();
1291     m_width = sz.x;
1292     m_height = sz.y;
1293
1294     SetDefaults();
1295 }
1296
1297 wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd  )
1298     : wxGraphicsContext(renderer)
1299 {
1300     Init();
1301     m_context = new Graphics( hwnd);
1302     RECT rect = wxGetWindowRect(hwnd);
1303     m_width = rect.right - rect.left;
1304     m_height = rect.bottom - rect.top;
1305     SetDefaults();
1306 }
1307
1308 wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr  )
1309     : wxGraphicsContext(renderer)
1310 {
1311     Init();
1312     m_context = gr;
1313     SetDefaults();
1314 }
1315
1316 wxGDIPlusContext::wxGDIPlusContext() : wxGraphicsContext(NULL)
1317 {
1318     Init();
1319 }
1320
1321 void wxGDIPlusContext::Init()
1322 {
1323     m_context = NULL;
1324     m_state1 = 0;
1325     m_state2= 0;
1326     m_height = 0;
1327     m_width = 0;
1328     m_fontScaleRatio = 1.0;
1329 }
1330
1331 void wxGDIPlusContext::SetDefaults()
1332 {
1333     m_context->SetTextRenderingHint(TextRenderingHintSystemDefault);
1334     m_context->SetPixelOffsetMode(PixelOffsetModeHalf);
1335     m_context->SetSmoothingMode(SmoothingModeHighQuality);
1336     m_state1 = m_context->Save();
1337     m_state2 = m_context->Save();
1338 }
1339
1340 wxGDIPlusContext::~wxGDIPlusContext()
1341 {
1342     if ( m_context )
1343     {
1344         m_context->Restore( m_state2 );
1345         m_context->Restore( m_state1 );
1346         delete m_context;
1347     }
1348 }
1349
1350
1351 void wxGDIPlusContext::Clip( const wxRegion &region )
1352 {
1353     Region rgn((HRGN)region.GetHRGN());
1354     m_context->SetClip(&rgn,CombineModeIntersect);
1355 }
1356
1357 void wxGDIPlusContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1358 {
1359     m_context->SetClip(RectF(x,y,w,h),CombineModeIntersect);
1360 }
1361
1362 void wxGDIPlusContext::ResetClip()
1363 {
1364     m_context->ResetClip();
1365 }
1366
1367 void wxGDIPlusContext::StrokeLines( size_t n, const wxPoint2DDouble *points)
1368 {
1369    if (m_composition == wxCOMPOSITION_DEST)
1370         return;
1371
1372    if ( !m_pen.IsNull() )
1373    {
1374        wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
1375        Point *cpoints = new Point[n];
1376        for (size_t i = 0; i < n; i++)
1377        {
1378            cpoints[i].X = (int)(points[i].m_x );
1379            cpoints[i].Y = (int)(points[i].m_y );
1380
1381        } // for (size_t i = 0; i < n; i++)
1382        m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ;
1383        delete[] cpoints;
1384    }
1385 }
1386
1387 void wxGDIPlusContext::DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode WXUNUSED(fillStyle) )
1388 {
1389    if (m_composition == wxCOMPOSITION_DEST)
1390         return;
1391
1392     wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
1393     Point *cpoints = new Point[n];
1394     for (size_t i = 0; i < n; i++)
1395     {
1396         cpoints[i].X = (int)(points[i].m_x );
1397         cpoints[i].Y = (int)(points[i].m_y );
1398
1399     } // for (int i = 0; i < n; i++)
1400     if ( !m_brush.IsNull() )
1401         m_context->FillPolygon( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() , cpoints , n ) ;
1402     if ( !m_pen.IsNull() )
1403         m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ;
1404     delete[] cpoints;
1405 }
1406
1407 void wxGDIPlusContext::StrokePath( const wxGraphicsPath& path )
1408 {
1409    if (m_composition == wxCOMPOSITION_DEST)
1410         return;
1411
1412     if ( !m_pen.IsNull() )
1413     {
1414         wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
1415         m_context->DrawPath( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , (GraphicsPath*) path.GetNativePath() );
1416     }
1417 }
1418
1419 void wxGDIPlusContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1420 {
1421    if (m_composition == wxCOMPOSITION_DEST)
1422         return;
1423
1424     if ( !m_brush.IsNull() )
1425     {
1426         wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
1427         ((GraphicsPath*) path.GetNativePath())->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
1428         m_context->FillPath( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() ,
1429             (GraphicsPath*) path.GetNativePath());
1430     }
1431 }
1432
1433 bool wxGDIPlusContext::SetAntialiasMode(wxAntialiasMode antialias)
1434 {
1435     if (m_antialias == antialias)
1436         return true;
1437
1438     m_antialias = antialias;
1439
1440     SmoothingMode antialiasMode;
1441     switch (antialias)
1442     {
1443         case wxANTIALIAS_DEFAULT:
1444             antialiasMode = SmoothingModeHighQuality;
1445             break;
1446         case wxANTIALIAS_NONE:
1447             antialiasMode = SmoothingModeNone;
1448             break;
1449         default:
1450             return false;
1451     }
1452     m_context->SetSmoothingMode(antialiasMode);
1453     return true;
1454 }
1455
1456 bool wxGDIPlusContext::SetCompositionMode(wxCompositionMode op)
1457 {
1458     if ( m_composition == op )
1459         return true;
1460
1461     m_composition = op;
1462
1463     if (m_composition == wxCOMPOSITION_DEST)
1464         return true;
1465
1466     CompositingMode cop;
1467     switch (op)
1468     {
1469         case wxCOMPOSITION_SOURCE:
1470             cop = CompositingModeSourceCopy;
1471             break;
1472         case wxCOMPOSITION_OVER:
1473             cop = CompositingModeSourceOver;
1474             break;
1475         default:
1476             return false;
1477     }
1478
1479     m_context->SetCompositingMode(cop);
1480     return true;
1481 }
1482
1483 void wxGDIPlusContext::BeginLayer(wxDouble /* opacity */)
1484 {
1485     // TODO
1486 }
1487
1488 void wxGDIPlusContext::EndLayer()
1489 {
1490     // TODO
1491 }
1492
1493 void wxGDIPlusContext::Rotate( wxDouble angle )
1494 {
1495     m_context->RotateTransform( RadToDeg(angle) );
1496 }
1497
1498 void wxGDIPlusContext::Translate( wxDouble dx , wxDouble dy )
1499 {
1500     m_context->TranslateTransform( dx , dy );
1501 }
1502
1503 void wxGDIPlusContext::Scale( wxDouble xScale , wxDouble yScale )
1504 {
1505     m_context->ScaleTransform(xScale,yScale);
1506 }
1507
1508 void wxGDIPlusContext::PushState()
1509 {
1510     GraphicsState state = m_context->Save();
1511     m_stateStack.push(state);
1512 }
1513
1514 void wxGDIPlusContext::PopState()
1515 {
1516     GraphicsState state = m_stateStack.top();
1517     m_stateStack.pop();
1518     m_context->Restore(state);
1519 }
1520
1521 void wxGDIPlusContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1522 {
1523    if (m_composition == wxCOMPOSITION_DEST)
1524         return;
1525
1526     Bitmap* image = static_cast<wxGDIPlusBitmapData*>(bmp.GetRefData())->GetGDIPlusBitmap();
1527     if ( image )
1528     {
1529         if( image->GetWidth() != (UINT) w || image->GetHeight() != (UINT) h )
1530         {
1531             Rect drawRect((REAL) x, (REAL)y, (REAL)w, (REAL)h);
1532             m_context->SetPixelOffsetMode( PixelOffsetModeNone );
1533             m_context->DrawImage(image, drawRect, 0 , 0 , image->GetWidth()-1, image->GetHeight()-1, UnitPixel ) ;
1534             m_context->SetPixelOffsetMode( PixelOffsetModeHalf );
1535         }
1536         else
1537             m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1538     }
1539 }
1540
1541 void wxGDIPlusContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1542 {
1543     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1544     DrawBitmap(bitmap, x, y, w, h);
1545 }
1546
1547 void wxGDIPlusContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1548 {
1549    if (m_composition == wxCOMPOSITION_DEST)
1550         return;
1551
1552     // the built-in conversion fails when there is alpha in the HICON (eg XP style icons), we can only
1553     // find out by looking at the bitmap data whether there really was alpha in it
1554     HICON hIcon = (HICON)icon.GetHICON();
1555     ICONINFO iconInfo ;
1556     // IconInfo creates the bitmaps for color and mask, we must dispose of them after use
1557     if (!GetIconInfo(hIcon,&iconInfo))
1558         return;
1559
1560     Bitmap interim(iconInfo.hbmColor,NULL);
1561
1562     Bitmap* image = NULL ;
1563
1564     // if it's not 32 bit, it doesn't have an alpha channel, note that since the conversion doesn't
1565     // work correctly, asking IsAlphaPixelFormat at this point fails as well
1566     if( GetPixelFormatSize(interim.GetPixelFormat())!= 32 )
1567     {
1568         image = Bitmap::FromHICON(hIcon);
1569     }
1570     else
1571     {
1572         size_t width = interim.GetWidth();
1573         size_t height = interim.GetHeight();
1574         Rect bounds(0,0,width,height);
1575         BitmapData data ;
1576
1577         interim.LockBits(&bounds, ImageLockModeRead,
1578             interim.GetPixelFormat(),&data);
1579
1580         bool hasAlpha = false;
1581         for ( size_t y = 0 ; y < height && !hasAlpha ; ++y)
1582         {
1583             for( size_t x = 0 ; x < width && !hasAlpha; ++x)
1584             {
1585                 ARGB *dest = (ARGB*)((BYTE*)data.Scan0 + data.Stride*y + x*4);
1586                 if ( ( *dest & Color::AlphaMask ) != 0 )
1587                     hasAlpha = true;
1588             }
1589         }
1590
1591         if ( hasAlpha )
1592         {
1593         image = new Bitmap(data.Width, data.Height, data.Stride,
1594             PixelFormat32bppARGB , (BYTE*) data.Scan0);
1595         }
1596         else
1597         {
1598             image = Bitmap::FromHICON(hIcon);
1599         }
1600
1601         interim.UnlockBits(&data);
1602     }
1603
1604     m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1605
1606     delete image ;
1607     DeleteObject(iconInfo.hbmColor);
1608     DeleteObject(iconInfo.hbmMask);
1609 }
1610
1611 wxGraphicsFont wxGDIPlusContext::CreateFont( const wxFont &font,
1612                                              const wxColour &col ) const
1613 {
1614     wxGDIPlusRenderer* renderer =
1615         static_cast<wxGDIPlusRenderer*>(GetRenderer());
1616     return renderer->CreateGDIPlusFont(this, font, col);
1617 }
1618
1619 void wxGDIPlusContext::DoDrawFilledText(const wxString& str,
1620                                         wxDouble x, wxDouble y,
1621                                         const wxGraphicsBrush& brush)
1622 {
1623    if (m_composition == wxCOMPOSITION_DEST)
1624         return;
1625
1626     wxCHECK_RET( !m_font.IsNull(),
1627                  wxT("wxGDIPlusContext::DrawText - no valid font set") );
1628
1629     if ( str.IsEmpty())
1630         return ;
1631
1632     wxGDIPlusFontData * const
1633         fontData = (wxGDIPlusFontData *)m_font.GetRefData();
1634     wxGDIPlusBrushData * const
1635         brushData = (wxGDIPlusBrushData *)brush.GetRefData();
1636
1637     m_context->DrawString
1638                (
1639                     str.wc_str(*wxConvUI),  // string to draw, always Unicode
1640                     -1,                     // length: string is NUL-terminated
1641                     fontData->GetGDIPlusFont(),
1642                     PointF(x, y),
1643                     StringFormat::GenericTypographic(),
1644                     brushData ? brushData->GetGDIPlusBrush()
1645                               : fontData->GetGDIPlusBrush()
1646                );
1647 }
1648
1649 void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1650                                      wxDouble *descent, wxDouble *externalLeading ) const
1651 {
1652     wxCHECK_RET( !m_font.IsNull(), wxT("wxGDIPlusContext::GetTextExtent - no valid font set") );
1653
1654     wxWCharBuffer s = str.wc_str( *wxConvUI );
1655     FontFamily ffamily ;
1656     Font* f = ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont();
1657
1658     f->GetFamily(&ffamily) ;
1659
1660     REAL factorY = m_fontScaleRatio;
1661
1662     REAL rDescent = ffamily.GetCellDescent(FontStyleRegular) *
1663         f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
1664     REAL rAscent = ffamily.GetCellAscent(FontStyleRegular) *
1665         f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
1666     REAL rHeight = ffamily.GetLineSpacing(FontStyleRegular) *
1667         f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
1668
1669     if ( height )
1670         *height = rHeight * factorY;
1671     if ( descent )
1672         *descent = rDescent * factorY;
1673     if ( externalLeading )
1674         *externalLeading = (rHeight - rAscent - rDescent) * factorY;
1675     // measuring empty strings is not guaranteed, so do it by hand
1676     if ( str.IsEmpty())
1677     {
1678         if ( width )
1679             *width = 0 ;
1680     }
1681     else
1682     {
1683         RectF layoutRect(0,0, 100000.0f, 100000.0f);
1684         StringFormat strFormat( StringFormat::GenericTypographic() );
1685         strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() );
1686
1687         RectF bounds ;
1688         m_context->MeasureString((const wchar_t *) s , wcslen(s) , f, layoutRect, &strFormat, &bounds ) ;
1689         if ( width )
1690             *width = bounds.Width;
1691         if ( height )
1692             *height = bounds.Height;
1693     }
1694 }
1695
1696 void wxGDIPlusContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1697 {
1698     widths.Empty();
1699     widths.Add(0, text.length());
1700
1701     wxCHECK_RET( !m_font.IsNull(), wxT("wxGDIPlusContext::GetPartialTextExtents - no valid font set") );
1702
1703     if (text.empty())
1704         return;
1705
1706     Font* f = ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont();
1707     wxWCharBuffer ws = text.wc_str( *wxConvUI );
1708     size_t len = wcslen( ws ) ;
1709     wxASSERT_MSG(text.length() == len , wxT("GetPartialTextExtents not yet implemented for multichar situations"));
1710
1711     RectF layoutRect(0,0, 100000.0f, 100000.0f);
1712     StringFormat strFormat( StringFormat::GenericTypographic() );
1713
1714     size_t startPosition = 0;
1715     size_t remainder = len;
1716     const size_t maxSpan = 32;
1717     CharacterRange* ranges = new CharacterRange[maxSpan] ;
1718     Region* regions = new Region[maxSpan];
1719
1720     while( remainder > 0 )
1721     {
1722         size_t span = wxMin( maxSpan, remainder );
1723
1724         for( size_t i = 0 ; i < span ; ++i)
1725         {
1726             ranges[i].First = 0 ;
1727             ranges[i].Length = startPosition+i+1 ;
1728         }
1729         strFormat.SetMeasurableCharacterRanges(span,ranges);
1730         strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() );
1731         m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,span,regions) ;
1732
1733         RectF bbox ;
1734         for ( size_t i = 0 ; i < span ; ++i)
1735         {
1736             regions[i].GetBounds(&bbox,m_context);
1737             widths[startPosition+i] = bbox.Width;
1738         }
1739         remainder -= span;
1740         startPosition += span;
1741     }
1742
1743     delete[] ranges;
1744     delete[] regions;
1745 }
1746
1747 bool wxGDIPlusContext::ShouldOffset() const
1748 {
1749     int penwidth = 0 ;
1750     if ( !m_pen.IsNull() )
1751     {
1752         penwidth = (int)((wxGDIPlusPenData*)m_pen.GetRefData())->GetWidth();
1753         if ( penwidth == 0 )
1754             penwidth = 1;
1755     }
1756     return ( penwidth % 2 ) == 1;
1757 }
1758
1759 void* wxGDIPlusContext::GetNativeContext()
1760 {
1761     return m_context;
1762 }
1763
1764 // concatenates this transform with the current transform of this context
1765 void wxGDIPlusContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1766 {
1767     m_context->MultiplyTransform((Matrix*) matrix.GetNativeMatrix());
1768 }
1769
1770 // sets the transform of this context
1771 void wxGDIPlusContext::SetTransform( const wxGraphicsMatrix& matrix )
1772 {
1773     m_context->SetTransform((Matrix*) matrix.GetNativeMatrix());
1774 }
1775
1776 // gets the matrix of this context
1777 wxGraphicsMatrix wxGDIPlusContext::GetTransform() const
1778 {
1779     wxGraphicsMatrix matrix = CreateMatrix();
1780     m_context->GetTransform((Matrix*) matrix.GetNativeMatrix());
1781     return matrix;
1782 }
1783
1784 void wxGDIPlusContext::GetSize( wxDouble* width, wxDouble *height )
1785 {
1786     *width = m_width;
1787     *height = m_height;
1788 }
1789
1790 //-----------------------------------------------------------------------------
1791 // wxGDIPlusPrintingContext implementation
1792 //-----------------------------------------------------------------------------
1793
1794 wxGDIPlusPrintingContext::wxGDIPlusPrintingContext( wxGraphicsRenderer* renderer,
1795                                                     const wxDC& dc )
1796     : wxGDIPlusContext(renderer, dc)
1797 {
1798     Graphics* context = GetGraphics();
1799
1800     //m_context->SetPageUnit(UnitDocument);
1801
1802     // Setup page scale, based on DPI ratio.
1803     // Antecedent should be 100dpi when the default page unit
1804     // (UnitDisplay) is used. Page unit UnitDocument would require 300dpi
1805     // instead. Note that calling SetPageScale() does not have effect on
1806     // non-printing DCs (that is, any other than wxPrinterDC or
1807     // wxEnhMetaFileDC).
1808     REAL dpiRatio = 100.0 / context->GetDpiY();
1809     context->SetPageScale(dpiRatio);
1810
1811     // We use this modifier when measuring fonts. It is needed because the
1812     // page scale is modified above.
1813     m_fontScaleRatio = context->GetDpiY() / 72.0;
1814 }
1815
1816 //-----------------------------------------------------------------------------
1817 // wxGDIPlusRenderer implementation
1818 //-----------------------------------------------------------------------------
1819
1820 IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusRenderer,wxGraphicsRenderer)
1821
1822 static wxGDIPlusRenderer gs_GDIPlusRenderer;
1823
1824 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1825 {
1826     return &gs_GDIPlusRenderer;
1827 }
1828
1829 bool wxGDIPlusRenderer::EnsureIsLoaded()
1830 {
1831     // load gdiplus.dll if not yet loaded, but don't bother doing it again
1832     // if we already tried and failed (we don't want to spend lot of time
1833     // returning NULL from wxGraphicsContext::Create(), which may be called
1834     // relatively frequently):
1835     if ( m_loaded == -1 )
1836     {
1837         Load();
1838     }
1839
1840     return m_loaded == 1;
1841 }
1842
1843 // call EnsureIsLoaded() and return returnOnFail value if it fails
1844 #define ENSURE_LOADED_OR_RETURN(returnOnFail)  \
1845     if ( !EnsureIsLoaded() )                   \
1846         return (returnOnFail)
1847
1848
1849 void wxGDIPlusRenderer::Load()
1850 {
1851     GdiplusStartupInput input;
1852     GdiplusStartupOutput output;
1853     if ( GdiplusStartup(&m_gditoken,&input,&output) == Gdiplus::Ok )
1854     {
1855         wxLogTrace("gdiplus", "successfully initialized GDI+");
1856         m_loaded = 1;
1857     }
1858     else
1859     {
1860         wxLogTrace("gdiplus", "failed to initialize GDI+, missing gdiplus.dll?");
1861         m_loaded = 0;
1862     }
1863 }
1864
1865 void wxGDIPlusRenderer::Unload()
1866 {
1867     if ( m_gditoken )
1868     {
1869         GdiplusShutdown(m_gditoken);
1870         m_gditoken = NULL;
1871     }
1872     m_loaded = -1; // next Load() will try again
1873 }
1874
1875 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxWindowDC& dc)
1876 {
1877     ENSURE_LOADED_OR_RETURN(NULL);
1878     return new wxGDIPlusContext(this, dc);
1879 }
1880
1881 #if wxUSE_PRINTING_ARCHITECTURE
1882 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxPrinterDC& dc)
1883 {
1884     ENSURE_LOADED_OR_RETURN(NULL);
1885     wxGDIPlusContext* context = new wxGDIPlusPrintingContext(this, dc);
1886     return context;
1887 }
1888 #endif
1889
1890 #if wxUSE_ENH_METAFILE
1891 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxEnhMetaFileDC& dc)
1892 {
1893     ENSURE_LOADED_OR_RETURN(NULL);
1894     wxGDIPlusContext* context = new wxGDIPlusPrintingContext(this, dc);
1895     return context;
1896 }
1897 #endif
1898
1899 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxMemoryDC& dc)
1900 {
1901     ENSURE_LOADED_OR_RETURN(NULL);
1902     return new wxGDIPlusContext(this, dc);
1903 }
1904
1905 wxGraphicsContext * wxGDIPlusRenderer::CreateMeasuringContext()
1906 {
1907     ENSURE_LOADED_OR_RETURN(NULL);
1908     return new wxGDIPlusMeasuringContext(this);
1909 }
1910
1911 wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeContext( void * context )
1912 {
1913     ENSURE_LOADED_OR_RETURN(NULL);
1914     return new wxGDIPlusContext(this,(Graphics*) context);
1915 }
1916
1917
1918 wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeWindow( void * window )
1919 {
1920     ENSURE_LOADED_OR_RETURN(NULL);
1921     return new wxGDIPlusContext(this,(HWND) window);
1922 }
1923
1924 wxGraphicsContext * wxGDIPlusRenderer::CreateContext( wxWindow* window )
1925 {
1926     ENSURE_LOADED_OR_RETURN(NULL);
1927     return new wxGDIPlusContext(this, (HWND) window->GetHWND() );
1928 }
1929
1930 // Path
1931
1932 wxGraphicsPath wxGDIPlusRenderer::CreatePath()
1933 {
1934     ENSURE_LOADED_OR_RETURN(wxNullGraphicsPath);
1935     wxGraphicsPath m;
1936     m.SetRefData( new wxGDIPlusPathData(this));
1937     return m;
1938 }
1939
1940
1941 // Matrix
1942
1943 wxGraphicsMatrix wxGDIPlusRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1944                                                            wxDouble tx, wxDouble ty)
1945
1946 {
1947     ENSURE_LOADED_OR_RETURN(wxNullGraphicsMatrix);
1948     wxGraphicsMatrix m;
1949     wxGDIPlusMatrixData* data = new wxGDIPlusMatrixData( this );
1950     data->Set( a,b,c,d,tx,ty ) ;
1951     m.SetRefData(data);
1952     return m;
1953 }
1954
1955 wxGraphicsPen wxGDIPlusRenderer::CreatePen(const wxPen& pen)
1956 {
1957     ENSURE_LOADED_OR_RETURN(wxNullGraphicsPen);
1958     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
1959         return wxNullGraphicsPen;
1960     else
1961     {
1962         wxGraphicsPen p;
1963         p.SetRefData(new wxGDIPlusPenData( this, pen ));
1964         return p;
1965     }
1966 }
1967
1968 wxGraphicsBrush wxGDIPlusRenderer::CreateBrush(const wxBrush& brush )
1969 {
1970     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
1971     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
1972         return wxNullGraphicsBrush;
1973     else
1974     {
1975         wxGraphicsBrush p;
1976         p.SetRefData(new wxGDIPlusBrushData( this, brush ));
1977         return p;
1978     }
1979 }
1980
1981 wxGraphicsBrush
1982 wxGDIPlusRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
1983                                              wxDouble x2, wxDouble y2,
1984                                              const wxGraphicsGradientStops& stops)
1985 {
1986     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
1987     wxGraphicsBrush p;
1988     wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
1989     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
1990     p.SetRefData(d);
1991     return p;
1992  }
1993
1994 wxGraphicsBrush
1995 wxGDIPlusRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
1996                                              wxDouble xc, wxDouble yc,
1997                                              wxDouble radius,
1998                                              const wxGraphicsGradientStops& stops)
1999 {
2000     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2001     wxGraphicsBrush p;
2002     wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
2003     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,stops);
2004     p.SetRefData(d);
2005     return p;
2006 }
2007
2008 wxGraphicsFont
2009 wxGDIPlusRenderer::CreateGDIPlusFont( const wxGDIPlusContext* gc,
2010                                       const wxFont &font,
2011                                       const wxColour &col )
2012 {
2013     ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
2014     if ( font.Ok() )
2015     {
2016         wxGraphicsFont p;
2017         p.SetRefData(new wxGDIPlusFontData( this, gc, font, col ));
2018         return p;
2019     }
2020     else
2021         return wxNullGraphicsFont;
2022 }
2023
2024 wxGraphicsBitmap wxGDIPlusRenderer::CreateBitmap( const wxBitmap &bitmap )
2025 {
2026     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2027     if ( bitmap.Ok() )
2028     {
2029         wxGraphicsBitmap p;
2030         p.SetRefData(new wxGDIPlusBitmapData( this , bitmap ));
2031         return p;
2032     }
2033     else
2034         return wxNullGraphicsBitmap;
2035 }
2036
2037 wxGraphicsBitmap wxGDIPlusRenderer::CreateBitmapFromNativeBitmap( void *bitmap )
2038 {
2039     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2040     if ( bitmap != NULL )
2041     {
2042         wxGraphicsBitmap p;
2043         p.SetRefData(new wxGDIPlusBitmapData( this , (Bitmap*) bitmap ));
2044         return p;
2045     }
2046     else
2047         return wxNullGraphicsBitmap;
2048 }
2049
2050 wxGraphicsBitmap wxGDIPlusRenderer::CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  )
2051 {
2052     ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2053     Bitmap* image = static_cast<wxGDIPlusBitmapData*>(bitmap.GetRefData())->GetGDIPlusBitmap();
2054     if ( image )
2055     {
2056         wxGraphicsBitmap p;
2057         p.SetRefData(new wxGDIPlusBitmapData( this , image->Clone( (REAL) x , (REAL) y , (REAL) w , (REAL) h , PixelFormat32bppPARGB) ));
2058         return p;
2059     }
2060     else
2061         return wxNullGraphicsBitmap;
2062 }
2063
2064 // Shutdown GDI+ at app exit, before possible dll unload
2065 class wxGDIPlusRendererModule : public wxModule
2066 {
2067 public:
2068     virtual bool OnInit() { return true; }
2069     virtual void OnExit() { gs_GDIPlusRenderer.Unload(); }
2070
2071 private:
2072     DECLARE_DYNAMIC_CLASS(wxGDIPlusRendererModule)
2073 };
2074
2075 IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusRendererModule, wxModule)
2076
2077 // ----------------------------------------------------------------------------
2078 // wxMSW-specific parts of wxGCDC
2079 // ----------------------------------------------------------------------------
2080
2081 WXHDC wxGCDC::AcquireHDC()
2082 {
2083     wxGraphicsContext * const gc = GetGraphicsContext();
2084     if ( !gc )
2085         return NULL;
2086
2087     Graphics * const g = static_cast<Graphics *>(gc->GetNativeContext());
2088     return g ? g->GetHDC() : NULL;
2089 }
2090
2091 void wxGCDC::ReleaseHDC(WXHDC hdc)
2092 {
2093     if ( !hdc )
2094         return;
2095
2096     wxGraphicsContext * const gc = GetGraphicsContext();
2097     wxCHECK_RET( gc, "can't release HDC because there is no wxGraphicsContext" );
2098
2099     Graphics * const g = static_cast<Graphics *>(gc->GetNativeContext());
2100     wxCHECK_RET( g, "can't release HDC because there is no Graphics" );
2101
2102     g->ReleaseHDC((HDC)hdc);
2103 }
2104
2105 #endif  // wxUSE_GRAPHICS_CONTEXT