src/mac/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/dccg.cpp
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/graphics.h"
  15 #include "wx/private/graphics.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/dcclient.h"
  19     #include "wx/dcmemory.h"
  20     #include "wx/log.h"
  21     #include "wx/region.h"
  22     #include "wx/image.h"
  23     #include "wx/icon.h"
  24 #endif
  25
  26 #include "wx/mac/uma.h"
  27
  28 #ifdef __MSL__
  29     #if __MSL__ >= 0x6000
  30         #include "math.h"
  31         // in case our functions were defined outside std, we make it known all the same
  32         namespace std { }
  33         using namespace std;
  34     #endif
  35 #endif
  36
  37 #include "wx/mac/private.h"
  38
  39 //-----------------------------------------------------------------------------
  40 // constants
  41 //-----------------------------------------------------------------------------
  42
  43 #if !defined( __DARWIN__ ) || defined(__MWERKS__)
  44 #ifndef M_PI
  45 const double M_PI = 3.14159265358979;
  46 #endif
  47 #endif
  48
  49 static const double RAD2DEG = 180.0 / M_PI;
  50
  51 //
  52 // Pen, Brushes and Fonts
  53 //
  54
  55 #pragma mark -
  56 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
  57
  58 OSStatus wxMacDrawCGImage(
  59                   CGContextRef    inContext,
  60                   const HIRect *  inBounds,
  61                   CGImageRef      inImage)
  62 {
  63 #ifdef __LP64__
  64     // todo flip
  65     CGContextDrawImage(inContext, *inBounds, inImage );
  66     return noErr;
  67 #else
  68     return HIViewDrawCGImage( inContext, inBounds, inImage );
  69 #endif
  70 }
  71
  72 // CGPattern wrapper class: always allocate on heap, never call destructor
  73
  74 class wxMacCoreGraphicsPattern
  75 {
  76 public :
  77     wxMacCoreGraphicsPattern() {}
  78
  79     // is guaranteed to be called only with a non-Null CGContextRef
  80     virtual void Render( CGContextRef ctxRef ) = 0;
  81
  82     operator CGPatternRef() const { return m_patternRef; }
  83
  84 protected :
  85     virtual ~wxMacCoreGraphicsPattern()
  86     {
  87         // as this is called only when the m_patternRef is been released;
  88         // don't release it again
  89     }
  90
  91     static void _Render( void *info, CGContextRef ctxRef )
  92     {
  93         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
  94         if ( self && ctxRef )
  95             self->Render( ctxRef );
  96     }
  97
  98     static void _Dispose( void *info )
  99     {
 100         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 101         delete self;
 102     }
 103
 104     CGPatternRef m_patternRef;
 105
 106     static const CGPatternCallbacks ms_Callbacks;
 107 };
 108
 109 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
 110
 111 class ImagePattern : public wxMacCoreGraphicsPattern
 112 {
 113 public :
 114     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 115     {
 116         wxASSERT( bmp && bmp->Ok() );
 117
 118         Init( (CGImageRef) bmp->CreateCGImage() , transform );
 119     }
 120
 121     // ImagePattern takes ownership of CGImageRef passed in
 122     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 123     {
 124         if ( image )
 125             CFRetain( image );
 126
 127         Init( image , transform );
 128     }
 129
 130     virtual void Render( CGContextRef ctxRef )
 131     {
 132         if (m_image != NULL)
 133             wxMacDrawCGImage( ctxRef, &m_imageBounds, m_image );
 134     }
 135
 136 protected :
 137     void Init( CGImageRef image, const CGAffineTransform& transform )
 138     {
 139         m_image = image;
 140         if ( m_image )
 141         {
 142             m_imageBounds = CGRectMake( 0.0, 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 143             m_patternRef = CGPatternCreate(
 144                 this , m_imageBounds, transform ,
 145                 m_imageBounds.size.width, m_imageBounds.size.height,
 146                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 147         }
 148     }
 149
 150     virtual ~ImagePattern()
 151     {
 152         if ( m_image )
 153             CGImageRelease( m_image );
 154     }
 155
 156     CGImageRef m_image;
 157     CGRect m_imageBounds;
 158 };
 159
 160 class HatchPattern : public wxMacCoreGraphicsPattern
 161 {
 162 public :
 163     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 164     {
 165         m_hatch = hatchstyle;
 166         m_imageBounds = CGRectMake( 0.0, 0.0, 8.0 , 8.0 );
 167         m_patternRef = CGPatternCreate(
 168             this , m_imageBounds, transform ,
 169             m_imageBounds.size.width, m_imageBounds.size.height,
 170             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 171     }
 172
 173     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 174     {
 175         CGContextStrokeLineSegments( ctxRef , pts , count );
 176     }
 177
 178     virtual void Render( CGContextRef ctxRef )
 179     {
 180         switch ( m_hatch )
 181         {
 182             case wxBDIAGONAL_HATCH :
 183                 {
 184                     CGPoint pts[] =
 185                     {
 186                     { 8.0 , 0.0 } , { 0.0 , 8.0 }
 187                     };
 188                     StrokeLineSegments( ctxRef , pts , 2 );
 189                 }
 190                 break;
 191
 192             case wxCROSSDIAG_HATCH :
 193                 {
 194                     CGPoint pts[] =
 195                     {
 196                         { 0.0 , 0.0 } , { 8.0 , 8.0 } ,
 197                         { 8.0 , 0.0 } , { 0.0 , 8.0 }
 198                     };
 199                     StrokeLineSegments( ctxRef , pts , 4 );
 200                 }
 201                 break;
 202
 203             case wxFDIAGONAL_HATCH :
 204                 {
 205                     CGPoint pts[] =
 206                     {
 207                     { 0.0 , 0.0 } , { 8.0 , 8.0 }
 208                     };
 209                     StrokeLineSegments( ctxRef , pts , 2 );
 210                 }
 211                 break;
 212
 213             case wxCROSS_HATCH :
 214                 {
 215                     CGPoint pts[] =
 216                     {
 217                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 218                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 219                     };
 220                     StrokeLineSegments( ctxRef , pts , 4 );
 221                 }
 222                 break;
 223
 224             case wxHORIZONTAL_HATCH :
 225                 {
 226                     CGPoint pts[] =
 227                     {
 228                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 229                     };
 230                     StrokeLineSegments( ctxRef , pts , 2 );
 231                 }
 232                 break;
 233
 234             case wxVERTICAL_HATCH :
 235                 {
 236                     CGPoint pts[] =
 237                     {
 238                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 239                     };
 240                     StrokeLineSegments( ctxRef , pts , 2 );
 241                 }
 242                 break;
 243
 244             default:
 245                 break;
 246         }
 247     }
 248
 249 protected :
 250     virtual ~HatchPattern() {}
 251
 252     CGRect      m_imageBounds;
 253     int         m_hatch;
 254 };
 255
 256 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 257 {
 258 public:
 259     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 260     ~wxMacCoreGraphicsPenData();
 261
 262     void Init();
 263     virtual void Apply( wxGraphicsContext* context );
 264     virtual wxDouble GetWidth() { return m_width; }
 265
 266 protected :
 267     CGLineCap m_cap;
 268     wxCFRef<CGColorRef> m_color;
 269     wxCFRef<CGColorSpaceRef> m_colorSpace;
 270
 271     CGLineJoin m_join;
 272     CGFloat m_width;
 273
 274     int m_count;
 275     const CGFloat *m_lengths;
 276     CGFloat *m_userLengths;
 277
 278
 279     bool m_isPattern;
 280     wxCFRef<CGPatternRef> m_pattern;
 281     CGFloat* m_patternColorComponents;
 282 };
 283
 284 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 285     wxGraphicsObjectRefData( renderer )
 286 {
 287     Init();
 288
 289     m_color.reset( pen.GetColour().CreateCGColor() ) ;
 290
 291     // TODO: * m_dc->m_scaleX
 292     m_width = pen.GetWidth();
 293     if (m_width <= 0.0)
 294         m_width = 0.1;
 295
 296     switch ( pen.GetCap() )
 297     {
 298         case wxCAP_ROUND :
 299             m_cap = kCGLineCapRound;
 300             break;
 301
 302         case wxCAP_PROJECTING :
 303             m_cap = kCGLineCapSquare;
 304             break;
 305
 306         case wxCAP_BUTT :
 307             m_cap = kCGLineCapButt;
 308             break;
 309
 310         default :
 311             m_cap = kCGLineCapButt;
 312             break;
 313     }
 314
 315     switch ( pen.GetJoin() )
 316     {
 317         case wxJOIN_BEVEL :
 318             m_join = kCGLineJoinBevel;
 319             break;
 320
 321         case wxJOIN_MITER :
 322             m_join = kCGLineJoinMiter;
 323             break;
 324
 325         case wxJOIN_ROUND :
 326             m_join = kCGLineJoinRound;
 327             break;
 328
 329         default :
 330             m_join = kCGLineJoinMiter;
 331             break;
 332     }
 333
 334     const CGFloat dashUnit = m_width < 1.0 ? 1.0 : m_width;
 335
 336     const CGFloat dotted[] = { dashUnit , dashUnit + 2.0 };
 337     static const CGFloat short_dashed[] = { 9.0 , 6.0 };
 338     static const CGFloat dashed[] = { 19.0 , 9.0 };
 339     static const CGFloat dotted_dashed[] = { 9.0 , 6.0 , 3.0 , 3.0 };
 340
 341     switch ( pen.GetStyle() )
 342     {
 343         case wxSOLID :
 344             break;
 345
 346         case wxDOT :
 347             m_count = WXSIZEOF(dotted);
 348             m_userLengths = new CGFloat[ m_count ] ;
 349             memcpy( m_userLengths, dotted, sizeof(dotted) );
 350             m_lengths = m_userLengths;
 351             break;
 352
 353         case wxLONG_DASH :
 354             m_count = WXSIZEOF(dashed);
 355             m_lengths = dashed;
 356             break;
 357
 358         case wxSHORT_DASH :
 359             m_count = WXSIZEOF(short_dashed);
 360             m_lengths = short_dashed;
 361             break;
 362
 363         case wxDOT_DASH :
 364             m_count = WXSIZEOF(dotted_dashed);
 365             m_lengths = dotted_dashed;
 366             break;
 367
 368         case wxUSER_DASH :
 369             wxDash *dashes;
 370             m_count = pen.GetDashes( &dashes );
 371             if ((dashes != NULL) && (m_count > 0))
 372             {
 373                 m_userLengths = new CGFloat[m_count];
 374                 for ( int i = 0; i < m_count; ++i )
 375                 {
 376                     m_userLengths[i] = dashes[i] * dashUnit;
 377
 378                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 379                         m_userLengths[i] = dashUnit + 2.0;
 380                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 381                         m_userLengths[i] = dashUnit;
 382                 }
 383             }
 384             m_lengths = m_userLengths;
 385             break;
 386
 387         case wxSTIPPLE :
 388             {
 389                 wxBitmap* bmp = pen.GetStipple();
 390                 if ( bmp && bmp->Ok() )
 391                 {
 392                     m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 393                     m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 394                     m_patternColorComponents = new CGFloat[1] ;
 395                     m_patternColorComponents[0] = 1.0;
 396                     m_isPattern = true;
 397                 }
 398             }
 399             break;
 400
 401         default :
 402             {
 403                 m_isPattern = true;
 404                 m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 405                 m_pattern.reset( (CGPatternRef) *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 406                 m_patternColorComponents = new CGFloat[4] ;
 407                 m_patternColorComponents[0] = pen.GetColour().Red() / 255.0;
 408                 m_patternColorComponents[1] = pen.GetColour().Green() / 255.0;
 409                 m_patternColorComponents[2] = pen.GetColour().Blue() / 255.0;
 410                 m_patternColorComponents[3] =  pen.GetColour().Alpha() / 255.0;
 411             }
 412             break;
 413     }
 414     if ((m_lengths != NULL) && (m_count > 0))
 415     {
 416         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 417         m_cap = kCGLineCapButt;
 418     }
 419 }
 420
 421 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 422 {
 423     delete[] m_userLengths;
 424     delete[] m_patternColorComponents;
 425 }
 426
 427 void wxMacCoreGraphicsPenData::Init()
 428 {
 429     m_lengths = NULL;
 430     m_userLengths = NULL;
 431     m_width = 0;
 432     m_count = 0;
 433     m_patternColorComponents = NULL;
 434     m_isPattern = false;
 435 }
 436
 437 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 438 {
 439     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 440     CGContextSetLineWidth( cg , m_width );
 441     CGContextSetLineJoin( cg , m_join );
 442
 443     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 444     CGContextSetLineCap( cg , m_cap );
 445
 446     if ( m_isPattern )
 447     {
 448         CGAffineTransform matrix = CGContextGetCTM( cg );
 449         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 450         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 451         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 452     }
 453     else
 454     {
 455         if ( context->GetLogicalFunction() == wxINVERT || context->GetLogicalFunction() == wxXOR )
 456         {
 457             CGContextSetRGBStrokeColor( cg , 1.0, 1.0 , 1.0, 1.0 );
 458         }
 459         else
 460             CGContextSetStrokeColorWithColor( cg , m_color );
 461     }
 462 }
 463
 464 //
 465 // Brush
 466 //
 467
 468 static const char *gs_stripedback_xpm[] = {
 469 /* columns rows colors chars-per-pixel */
 470 "4 4 2 1",
 471 ". c #F0F0F0",
 472 "X c #ECECEC",
 473 /* pixels */
 474 "....",
 475 "....",
 476 "XXXX",
 477 "XXXX"
 478 };
 479
 480 wxBitmap gs_stripedback_bmp( wxImage( (const char* const* ) gs_stripedback_xpm  ), -1 ) ;
 481
 482 // make sure we all use one class for all conversions from wx to native colour
 483
 484 class wxMacCoreGraphicsColour
 485 {
 486     public:
 487         wxMacCoreGraphicsColour();
 488         wxMacCoreGraphicsColour(const wxBrush &brush);
 489         ~wxMacCoreGraphicsColour();
 490
 491         void Apply( CGContextRef cgContext );
 492     protected:
 493         void Init();
 494         wxCFRef<CGColorRef> m_color;
 495         wxCFRef<CGColorSpaceRef> m_colorSpace;
 496
 497         bool m_isPattern;
 498         wxCFRef<CGPatternRef> m_pattern;
 499         CGFloat* m_patternColorComponents;
 500 } ;
 501
 502 wxMacCoreGraphicsColour::~wxMacCoreGraphicsColour()
 503 {
 504     delete[] m_patternColorComponents;
 505 }
 506
 507 void wxMacCoreGraphicsColour::Init()
 508 {
 509     m_isPattern = false;
 510     m_patternColorComponents = NULL;
 511 }
 512
 513 void wxMacCoreGraphicsColour::Apply( CGContextRef cgContext )
 514 {
 515     if ( m_isPattern )
 516     {
 517         CGAffineTransform matrix = CGContextGetCTM( cgContext );
 518         CGContextSetPatternPhase( cgContext, CGSizeMake(matrix.tx, matrix.ty) );
 519         CGContextSetFillColorSpace( cgContext , m_colorSpace );
 520         CGContextSetFillPattern( cgContext, m_pattern , m_patternColorComponents );
 521     }
 522     else
 523     {
 524         CGContextSetFillColorWithColor( cgContext, m_color );
 525     }
 526 }
 527
 528 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour()
 529 {
 530     Init();
 531 }
 532
 533 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
 534 {
 535     Init();
 536     if ( brush.GetStyle() == wxSOLID )
 537     {
 538         m_color.reset( brush.GetColour().CreateCGColor() );
 539     }
 540     else if ( brush.IsHatch() )
 541     {
 542         m_isPattern = true;
 543         m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 544         m_pattern.reset( (CGPatternRef) *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 545
 546         m_patternColorComponents = new CGFloat[4] ;
 547         m_patternColorComponents[0] = brush.GetColour().Red() / 255.0;
 548         m_patternColorComponents[1] = brush.GetColour().Green() / 255.0;
 549         m_patternColorComponents[2] = brush.GetColour().Blue() / 255.0;
 550         m_patternColorComponents[3] = brush.GetColour().Alpha() / 255.0;
 551     }
 552     else
 553     {
 554         // now brush is a bitmap
 555         wxBitmap* bmp = brush.GetStipple();
 556         if ( bmp && bmp->Ok() )
 557         {
 558             m_isPattern = true;
 559             m_patternColorComponents = new CGFloat[1] ;
 560             m_patternColorComponents[0] = 1.0;
 561             m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 562             m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 563         }
 564     }
 565 }
 566
 567 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 568 {
 569 public:
 570     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 571     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 572     ~wxMacCoreGraphicsBrushData ();
 573
 574     virtual void Apply( wxGraphicsContext* context );
 575     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 576         const wxColour&c1, const wxColour&c2 );
 577     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 578     const wxColour &oColor, const wxColour &cColor );
 579
 580     virtual bool IsShading() { return m_isShading; }
 581     CGShadingRef GetShading() { return m_shading; }
 582 protected:
 583     CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
 584     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 585     virtual void Init();
 586
 587     wxMacCoreGraphicsColour m_cgColor;
 588
 589     bool m_isShading;
 590     CGFunctionRef m_gradientFunction;
 591     CGShadingRef m_shading;
 592     CGFloat *m_gradientComponents;
 593 };
 594
 595 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 596 {
 597     Init();
 598 }
 599
 600 void wxMacCoreGraphicsBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 601         const wxColour&c1, const wxColour&c2 )
 602 {
 603     m_gradientFunction = CreateGradientFunction( c1, c2 );
 604     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake(x1,y1), CGPointMake(x2,y2), m_gradientFunction, true, true ) ;
 605     m_isShading = true ;
 606 }
 607
 608 void wxMacCoreGraphicsBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 609     const wxColour &oColor, const wxColour &cColor )
 610 {
 611     m_gradientFunction = CreateGradientFunction( oColor, cColor );
 612     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake(xo,yo), 0, CGPointMake(xc,yc), radius, m_gradientFunction, true, true ) ;
 613     m_isShading = true ;
 614 }
 615
 616 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer ),
 617     m_cgColor( brush )
 618 {
 619     Init();
 620
 621 }
 622
 623 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 624 {
 625     if ( m_shading )
 626         CGShadingRelease(m_shading);
 627
 628     if( m_gradientFunction )
 629         CGFunctionRelease(m_gradientFunction);
 630
 631     delete[] m_gradientComponents;
 632 }
 633
 634 void wxMacCoreGraphicsBrushData::Init()
 635 {
 636     m_gradientFunction = NULL;
 637     m_shading = NULL;
 638     m_gradientComponents = NULL;
 639     m_isShading = false;
 640 }
 641
 642 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 643 {
 644     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 645
 646     if ( m_isShading )
 647     {
 648         // nothing to set as shades are processed by clipping using the path and filling
 649     }
 650     else
 651     {
 652         m_cgColor.Apply( cg );
 653     }
 654 }
 655
 656 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 657 {
 658     CGFloat* colors = (CGFloat*) info ;
 659     CGFloat f = *in;
 660     for( int i = 0 ; i < 4 ; ++i )
 661     {
 662         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 663     }
 664 }
 665
 666 CGFunctionRef wxMacCoreGraphicsBrushData::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
 667 {
 668     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 669     static const CGFloat input_value_range [2] = { 0, 1 };
 670     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 671     m_gradientComponents = new CGFloat[8] ;
 672     m_gradientComponents[0] = c1.Red() / 255.0;
 673     m_gradientComponents[1] = c1.Green() / 255.0;
 674     m_gradientComponents[2] = c1.Blue() / 255.0;
 675     m_gradientComponents[3] = c1.Alpha() / 255.0;
 676     m_gradientComponents[4] = c2.Red() / 255.0;
 677     m_gradientComponents[5] = c2.Green() / 255.0;
 678     m_gradientComponents[6] = c2.Blue() / 255.0;
 679     m_gradientComponents[7] = c2.Alpha() / 255.0;
 680
 681     return CGFunctionCreate ( m_gradientComponents,  1,
 682                             input_value_range,
 683                             4,
 684                             output_value_ranges,
 685                             &callbacks);
 686 }
 687
 688 //
 689 // Font
 690 //
 691
 692 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 693 {
 694 public:
 695     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 696     ~wxMacCoreGraphicsFontData();
 697
 698 #if wxMAC_USE_ATSU_TEXT
 699     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 700 #endif
 701 #if wxMAC_USE_CORE_TEXT
 702     CTFontRef GetCTFont() const { return m_ctFont ; }
 703 #endif
 704     wxColour GetColour() const { return m_colour ; }
 705
 706     bool GetUnderlined() const { return m_underlined ; }
 707 private :
 708     wxColour m_colour;
 709     bool m_underlined;
 710 #if wxMAC_USE_ATSU_TEXT
 711     ATSUStyle m_macATSUIStyle;
 712 #endif
 713 #if wxMAC_USE_CORE_TEXT
 714     wxCFRef< CTFontRef > m_ctFont;
 715 #endif
 716 };
 717
 718 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 719 {
 720     m_colour = col;
 721     m_underlined = font.GetUnderlined();
 722
 723 #if wxMAC_USE_CORE_TEXT
 724     m_ctFont.reset( wxCFRetain((CTFontRef) font.MacGetCTFont()) );
 725 #endif
 726 #if wxMAC_USE_ATSU_TEXT
 727     OSStatus status = noErr;
 728     m_macATSUIStyle = NULL;
 729
 730     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 731
 732     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 733
 734     // we need the scale here ...
 735
 736     Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
 737     RGBColor atsuColor ;
 738     col.GetRGBColor( &atsuColor );
 739     ATSUAttributeTag atsuTags[] =
 740     {
 741             kATSUSizeTag ,
 742             kATSUColorTag ,
 743     };
 744     ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 745     {
 746             sizeof( Fixed ) ,
 747             sizeof( RGBColor ) ,
 748     };
 749     ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 750     {
 751             &atsuSize ,
 752             &atsuColor ,
 753     };
 754
 755     status = ::ATSUSetAttributes(
 756         m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
 757         atsuTags, atsuSizes, atsuValues);
 758
 759     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 760 #endif
 761 #if wxMAC_USE_CG_TEXT
 762 #endif
 763 }
 764
 765 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 766 {
 767 #if wxMAC_USE_CORE_TEXT
 768 #endif
 769 #if wxMAC_USE_ATSU_TEXT
 770     if ( m_macATSUIStyle )
 771     {
 772         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 773         m_macATSUIStyle = NULL;
 774     }
 775 #endif
 776 #if wxMAC_USE_CG_TEXT
 777 #endif
 778 }
 779
 780 //
 781 // Graphics Matrix
 782 //
 783
 784 //-----------------------------------------------------------------------------
 785 // wxMacCoreGraphicsMatrix declaration
 786 //-----------------------------------------------------------------------------
 787
 788 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
 789 {
 790 public :
 791     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
 792
 793     virtual ~wxMacCoreGraphicsMatrixData() ;
 794
 795     virtual wxGraphicsObjectRefData *Clone() const ;
 796
 797     // concatenates the matrix
 798     virtual void Concat( const wxGraphicsMatrixData *t );
 799
 800     // sets the matrix to the respective values
 801     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 802         wxDouble tx=0.0, wxDouble ty=0.0);
 803
 804     // gets the component valuess of the matrix
 805     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 806                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 807
 808     // makes this the inverse matrix
 809     virtual void Invert();
 810
 811     // returns true if the elements of the transformation matrix are equal ?
 812     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 813
 814     // return true if this is the identity matrix
 815     virtual bool IsIdentity() const;
 816
 817     //
 818     // transformation
 819     //
 820
 821     // add the translation to this matrix
 822     virtual void Translate( wxDouble dx , wxDouble dy );
 823
 824     // add the scale to this matrix
 825     virtual void Scale( wxDouble xScale , wxDouble yScale );
 826
 827     // add the rotation to this matrix (radians)
 828     virtual void Rotate( wxDouble angle );
 829
 830     //
 831     // apply the transforms
 832     //
 833
 834     // applies that matrix to the point
 835     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 836
 837     // applies the matrix except for translations
 838     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 839
 840     // returns the native representation
 841     virtual void * GetNativeMatrix() const;
 842
 843 private :
 844     CGAffineTransform m_matrix;
 845 } ;
 846
 847 //-----------------------------------------------------------------------------
 848 // wxMacCoreGraphicsMatrix implementation
 849 //-----------------------------------------------------------------------------
 850
 851 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
 852 {
 853 }
 854
 855 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
 856 {
 857 }
 858
 859 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 860 {
 861     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
 862     m->m_matrix = m_matrix ;
 863     return m;
 864 }
 865
 866 // concatenates the matrix
 867 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 868 {
 869     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 870 }
 871
 872 // sets the matrix to the respective values
 873 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 874     wxDouble tx, wxDouble ty)
 875 {
 876     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 877 }
 878
 879 // gets the component valuess of the matrix
 880 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 881                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
 882 {
 883     if (a)  *a = m_matrix.a;
 884     if (b)  *b = m_matrix.b;
 885     if (c)  *c = m_matrix.c;
 886     if (d)  *d = m_matrix.d;
 887     if (tx) *tx= m_matrix.tx;
 888     if (ty) *ty= m_matrix.ty;
 889 }
 890
 891 // makes this the inverse matrix
 892 void wxMacCoreGraphicsMatrixData::Invert()
 893 {
 894     m_matrix = CGAffineTransformInvert( m_matrix );
 895 }
 896
 897 // returns true if the elements of the transformation matrix are equal ?
 898 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 899 {
 900     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 901 }
 902
 903 // return true if this is the identity matrix
 904 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
 905 {
 906     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
 907         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
 908 }
 909
 910 //
 911 // transformation
 912 //
 913
 914 // add the translation to this matrix
 915 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
 916 {
 917     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
 918 }
 919
 920 // add the scale to this matrix
 921 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 922 {
 923     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
 924 }
 925
 926 // add the rotation to this matrix (radians)
 927 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
 928 {
 929     m_matrix = CGAffineTransformRotate( m_matrix, angle);
 930 }
 931
 932 //
 933 // apply the transforms
 934 //
 935
 936 // applies that matrix to the point
 937 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
 938 {
 939     CGPoint pt = CGPointApplyAffineTransform( CGPointMake(*x,*y), m_matrix);
 940
 941     *x = pt.x;
 942     *y = pt.y;
 943 }
 944
 945 // applies the matrix except for translations
 946 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
 947 {
 948     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake(*dx,*dy) , m_matrix );
 949     *dx = sz.width;
 950     *dy = sz.height;
 951 }
 952
 953 // returns the native representation
 954 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
 955 {
 956     return (void*) &m_matrix;
 957 }
 958
 959 //
 960 // Graphics Path
 961 //
 962
 963 //-----------------------------------------------------------------------------
 964 // wxMacCoreGraphicsPath declaration
 965 //-----------------------------------------------------------------------------
 966
 967 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
 968 {
 969 public :
 970     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
 971
 972     ~wxMacCoreGraphicsPathData();
 973
 974     virtual wxGraphicsObjectRefData *Clone() const;
 975
 976     // begins a new subpath at (x,y)
 977     virtual void MoveToPoint( wxDouble x, wxDouble y );
 978
 979     // adds a straight line from the current point to (x,y)
 980     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 981
 982     // adds a cubic Bezier curve from the current point, using two control points and an end point
 983     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 984
 985     // closes the current sub-path
 986     virtual void CloseSubpath();
 987
 988     // gets the last point of the current path, (0,0) if not yet set
 989     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 990
 991     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 992     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
 993
 994     //
 995     // These are convenience functions which - if not available natively will be assembled
 996     // using the primitives from above
 997     //
 998
 999     // adds a quadratic Bezier curve from the current point, using a control point and an end point
1000     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
1001
1002     // appends a rectangle as a new closed subpath
1003     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1004
1005     // appends an ellipsis as a new closed subpath fitting the passed rectangle
1006     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
1007
1008     // 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)
1009     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
1010
1011     // adds another path
1012     virtual void AddPath( const wxGraphicsPathData* path );
1013
1014     // returns the native path
1015     virtual void * GetNativePath() const { return m_path; }
1016
1017     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
1018     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
1019
1020     // transforms each point of this path by the matrix
1021     virtual void Transform( const wxGraphicsMatrixData* matrix );
1022
1023     // gets the bounding box enclosing all points (possibly including control points)
1024     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
1025
1026     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
1027 private :
1028     CGMutablePathRef m_path;
1029 };
1030
1031 //-----------------------------------------------------------------------------
1032 // wxMacCoreGraphicsPath implementation
1033 //-----------------------------------------------------------------------------
1034
1035 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1036 {
1037     if ( path )
1038         m_path = path;
1039     else
1040         m_path = CGPathCreateMutable();
1041 }
1042
1043 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1044 {
1045     CGPathRelease( m_path );
1046 }
1047
1048 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1049 {
1050     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1051     return clone ;
1052 }
1053
1054
1055 // opens (starts) a new subpath
1056 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1057 {
1058     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
1059 }
1060
1061 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1062 {
1063     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
1064 }
1065
1066 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1067 {
1068     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
1069 }
1070
1071 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1072 {
1073     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
1074 }
1075
1076 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1077 {
1078     CGRect cgRect = { { x , y } , { w , h } };
1079     CGPathAddRect( m_path , NULL , cgRect );
1080 }
1081
1082 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1083 {
1084     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1085 }
1086
1087 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1088 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1089 {
1090     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1091     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1092 }
1093
1094 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1095 {
1096     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1097 }
1098
1099 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1100 {
1101     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1102 }
1103
1104 // closes the current subpath
1105 void wxMacCoreGraphicsPathData::CloseSubpath()
1106 {
1107     CGPathCloseSubpath( m_path );
1108 }
1109
1110 // gets the last point of the current path, (0,0) if not yet set
1111 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1112 {
1113     CGPoint p = CGPathGetCurrentPoint( m_path );
1114     *x = p.x;
1115     *y = p.y;
1116 }
1117
1118 // transforms each point of this path by the matrix
1119 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1120 {
1121     CGMutablePathRef p = CGPathCreateMutable() ;
1122     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1123     CGPathRelease( m_path );
1124     m_path = p;
1125 }
1126
1127 // gets the bounding box enclosing all points (possibly including control points)
1128 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1129 {
1130     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1131     *x = bounds.origin.x;
1132     *y = bounds.origin.y;
1133     *w = bounds.size.width;
1134     *h = bounds.size.height;
1135 }
1136
1137 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, int fillStyle) const
1138 {
1139     return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1140 }
1141
1142 //
1143 // Graphics Context
1144 //
1145
1146 //-----------------------------------------------------------------------------
1147 // wxMacCoreGraphicsContext declaration
1148 //-----------------------------------------------------------------------------
1149
1150 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1151 {
1152 public:
1153     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1154
1155     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1156
1157     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1158
1159     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1160
1161     wxMacCoreGraphicsContext();
1162
1163     ~wxMacCoreGraphicsContext();
1164
1165     void Init();
1166
1167     // returns the size of the graphics context in device coordinates
1168     virtual void GetSize( wxDouble* width, wxDouble* height);
1169
1170     virtual void StartPage( wxDouble width, wxDouble height );
1171
1172     virtual void EndPage();
1173
1174     virtual void Flush();
1175
1176     // push the current state of the context, ie the transformation matrix on a stack
1177     virtual void PushState();
1178
1179     // pops a stored state from the stack
1180     virtual void PopState();
1181
1182     // clips drawings to the region
1183     virtual void Clip( const wxRegion &region );
1184
1185     // clips drawings to the rect
1186     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1187
1188     // resets the clipping to original extent
1189     virtual void ResetClip();
1190
1191     virtual void * GetNativeContext();
1192
1193     bool SetLogicalFunction( int function );
1194     //
1195     // transformation
1196     //
1197
1198     // translate
1199     virtual void Translate( wxDouble dx , wxDouble dy );
1200
1201     // scale
1202     virtual void Scale( wxDouble xScale , wxDouble yScale );
1203
1204     // rotate (radians)
1205     virtual void Rotate( wxDouble angle );
1206
1207     // concatenates this transform with the current transform of this context
1208     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1209
1210     // sets the transform of this context
1211     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1212
1213     // gets the matrix of this context
1214     virtual wxGraphicsMatrix GetTransform() const;
1215     //
1216     // setting the paint
1217     //
1218
1219     // strokes along a path with the current pen
1220     virtual void StrokePath( const wxGraphicsPath &path );
1221
1222     // fills a path with the current brush
1223     virtual void FillPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1224
1225     // draws a path by first filling and then stroking
1226     virtual void DrawPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1227
1228     virtual bool ShouldOffset() const
1229     {
1230         int penwidth = 0 ;
1231         if ( !m_pen.IsNull() )
1232         {
1233             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1234             if ( penwidth == 0 )
1235                 penwidth = 1;
1236         }
1237         return ( penwidth % 2 ) == 1;
1238     }
1239     //
1240     // text
1241     //
1242
1243     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1244
1245     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1246
1247     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1248         wxDouble *descent, wxDouble *externalLeading ) const;
1249
1250     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1251
1252     //
1253     // image support
1254     //
1255
1256     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1257
1258     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1259
1260     void SetNativeContext( CGContextRef cg );
1261
1262     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1263     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1264
1265 private:
1266     void EnsureIsValid();
1267
1268     CGContextRef m_cgContext;
1269     WindowRef m_windowRef;
1270     bool m_releaseContext;
1271     CGAffineTransform m_windowTransform;
1272     wxDouble m_width;
1273     wxDouble m_height;
1274
1275     wxCFRef<HIShapeRef> m_clipRgn;
1276 };
1277
1278 //-----------------------------------------------------------------------------
1279 // device context implementation
1280 //
1281 // more and more of the dc functionality should be implemented by calling
1282 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1283 // also coordinate conversions should be moved to native matrix ops
1284 //-----------------------------------------------------------------------------
1285
1286 // we always stock two context states, one at entry, to be able to preserve the
1287 // state we were called with, the other one after changing to HI Graphics orientation
1288 // (this one is used for getting back clippings etc)
1289
1290 //-----------------------------------------------------------------------------
1291 // wxMacCoreGraphicsContext implementation
1292 //-----------------------------------------------------------------------------
1293
1294 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1295
1296 class wxQuartzOffsetHelper
1297 {
1298 public :
1299     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1300     {
1301         m_cg = cg;
1302         m_offset = offset;
1303         if ( m_offset )
1304             CGContextTranslateCTM( m_cg, 0.5, 0.5 );
1305     }
1306     ~wxQuartzOffsetHelper( )
1307     {
1308         if ( m_offset )
1309             CGContextTranslateCTM( m_cg, -0.5, -0.5 );
1310     }
1311 public :
1312     CGContextRef m_cg;
1313     bool m_offset;
1314 } ;
1315
1316 void wxMacCoreGraphicsContext::Init()
1317 {
1318     m_cgContext = NULL;
1319     m_releaseContext = false;
1320     m_windowRef = NULL;
1321     m_width = 0;
1322     m_height = 0;
1323
1324     HIRect r = CGRectMake(0,0,0,0);
1325     m_clipRgn.reset(HIShapeCreateWithRect(&r));
1326 }
1327
1328 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1329 {
1330     Init();
1331     SetNativeContext(cgcontext);
1332     m_width = width;
1333     m_height = height;
1334 }
1335
1336 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1337 {
1338     Init();
1339     m_windowRef = window;
1340 }
1341
1342 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1343 {
1344     Init();
1345     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1346     int originX , originY;
1347     originX = originY = 0;
1348     window->MacWindowToRootWindow( &originX , &originY );
1349
1350     Rect bounds = { 0,0,0,0 };
1351 #ifdef __LP64__
1352 #else
1353     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1354 #endif
1355     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1356     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1357     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1358 }
1359
1360 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1361 {
1362     Init();
1363 }
1364
1365 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1366 {
1367     Init();
1368     wxLogDebug(wxT("Illegal Constructor called"));
1369 }
1370
1371 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1372 {
1373     SetNativeContext(NULL);
1374 }
1375
1376 void wxMacCoreGraphicsContext::GetSize( wxDouble* width, wxDouble* height)
1377 {
1378     *width = m_width;
1379     *height = m_height;
1380 }
1381
1382
1383 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1384 {
1385     CGRect r;
1386     if ( width != 0 && height != 0)
1387         r = CGRectMake( 0 , 0 , width  , height );
1388     else
1389         r = CGRectMake( 0 , 0 , m_width  , m_height );
1390
1391     CGContextBeginPage(m_cgContext,  &r );
1392 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1393 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1394 }
1395
1396 void wxMacCoreGraphicsContext::EndPage()
1397 {
1398     CGContextEndPage(m_cgContext);
1399 }
1400
1401 void wxMacCoreGraphicsContext::Flush()
1402 {
1403     CGContextFlush(m_cgContext);
1404 }
1405
1406 void wxMacCoreGraphicsContext::EnsureIsValid()
1407 {
1408     if ( !m_cgContext )
1409     {
1410         OSStatus status =
1411 #ifndef __LP64__
1412             QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1413 #else
1414             paramErr;
1415 #endif
1416         wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
1417
1418         CGContextConcatCTM( m_cgContext, m_windowTransform );
1419                 CGContextSaveGState( m_cgContext );
1420                 m_releaseContext = true;
1421                 if ( !HIShapeIsEmpty(m_clipRgn) )
1422                 {
1423             // the clip region is in device coordinates, so we convert this again to user coordinates
1424             wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
1425             CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1426             HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1427                         HIShapeReplacePathInCGContext( hishape, m_cgContext );
1428                         CGContextClip( m_cgContext );
1429                 }
1430                 CGContextSaveGState( m_cgContext );
1431         }
1432 }
1433
1434 // TODO test whether the private CGContextSetCompositeOperation works under 10.3 (using NSCompositingModes)
1435
1436 bool wxMacCoreGraphicsContext::SetLogicalFunction( int function )
1437 {
1438     if (m_logicalFunction == function)
1439         return true;
1440
1441     EnsureIsValid();
1442
1443     bool retval = false;
1444     bool shouldAntiAlias = true;
1445     CGBlendMode mode = kCGBlendModeNormal;
1446
1447 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
1448     if ( UMAGetSystemVersion() >= 0x1050 )
1449     {
1450         retval = true;
1451         switch ( function )
1452         {
1453             // TODO find best corresponding porter duff modes
1454             case wxCOPY :
1455                 mode = kCGBlendModeCopy;
1456                 break;
1457             case wxCLEAR :
1458                 mode = kCGBlendModeClear;
1459                 break;
1460             case wxXOR :
1461                 mode = kCGBlendModeXOR;
1462                 shouldAntiAlias = false;
1463                 break;
1464             default :
1465                 retval = false;
1466                 break;
1467         }
1468     }
1469     else
1470 #endif
1471     {
1472         if ( function == wxCOPY )
1473         {
1474             retval = true;
1475         }
1476         else if ( function == wxINVERT || function == wxXOR )
1477         {
1478             // change color to white
1479             mode = kCGBlendModeExclusion;
1480             shouldAntiAlias = false;
1481             retval = true;
1482         }
1483     }
1484
1485     if (retval)
1486     {
1487         m_logicalFunction = function;
1488         CGContextSetBlendMode( m_cgContext, mode );
1489         CGContextSetShouldAntialias(m_cgContext, shouldAntiAlias);
1490     }
1491     return retval ;
1492 }
1493
1494 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1495 {
1496     if( m_cgContext )
1497     {
1498         HIShapeReplacePathInCGContext( region.GetWXHRGN() , m_cgContext );
1499         CGContextClip( m_cgContext );
1500     }
1501     else
1502     {
1503         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1504         // to regions we try at least to have correct translations
1505         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
1506
1507         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1508         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1509         m_clipRgn.reset(mutableShape);
1510     }
1511 }
1512
1513 // clips drawings to the rect
1514 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1515 {
1516     HIRect r = CGRectMake( x , y , w , h );
1517     if ( m_cgContext )
1518     {
1519         CGContextClipToRect( m_cgContext, r );
1520     }
1521     else
1522     {
1523         // the clipping itself must be stored as device coordinates, otherwise
1524         // we cannot apply it back correctly
1525         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1526         m_clipRgn.reset(HIShapeCreateWithRect(&r));
1527     }
1528 }
1529
1530     // resets the clipping to original extent
1531 void wxMacCoreGraphicsContext::ResetClip()
1532 {
1533     if ( m_cgContext )
1534     {
1535         // there is no way for clearing the clip, we can only revert to the stored
1536         // state, but then we have to make sure everything else is NOT restored
1537         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1538         CGContextRestoreGState( m_cgContext );
1539         CGContextSaveGState( m_cgContext );
1540         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1541         transformNew = CGAffineTransformInvert( transformNew ) ;
1542         CGContextConcatCTM( m_cgContext, transformNew);
1543         CGContextConcatCTM( m_cgContext, transform);
1544     }
1545     else
1546     {
1547         HIRect r = CGRectMake(0,0,0,0);
1548         m_clipRgn.reset(HIShapeCreateWithRect(&r));
1549     }
1550 }
1551
1552 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1553 {
1554     if ( m_pen.IsNull() )
1555         return ;
1556
1557     EnsureIsValid();
1558
1559     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1560
1561     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1562     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1563     CGContextStrokePath( m_cgContext );
1564 }
1565
1566 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , int fillStyle )
1567 {
1568     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1569     {
1570         // when using shading, we cannot draw pen and brush at the same time
1571         // revert to the base implementation of first filling and then stroking
1572         wxGraphicsContext::DrawPath( path, fillStyle );
1573         return;
1574     }
1575
1576     CGPathDrawingMode mode = kCGPathFill ;
1577     if ( m_brush.IsNull() )
1578     {
1579         if ( m_pen.IsNull() )
1580             return;
1581         else
1582             mode = kCGPathStroke;
1583     }
1584     else
1585     {
1586         if ( m_pen.IsNull() )
1587         {
1588             if ( fillStyle == wxODDEVEN_RULE )
1589                 mode = kCGPathEOFill;
1590             else
1591                 mode = kCGPathFill;
1592         }
1593         else
1594         {
1595             if ( fillStyle == wxODDEVEN_RULE )
1596                 mode = kCGPathEOFillStroke;
1597             else
1598                 mode = kCGPathFillStroke;
1599         }
1600     }
1601
1602     EnsureIsValid();
1603
1604     if ( !m_brush.IsNull() )
1605         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1606     if ( !m_pen.IsNull() )
1607         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1608
1609     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1610
1611     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1612     CGContextDrawPath( m_cgContext , mode );
1613 }
1614
1615 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , int fillStyle )
1616 {
1617     if ( m_brush.IsNull() )
1618         return;
1619
1620     EnsureIsValid();
1621
1622     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1623     {
1624         CGContextSaveGState( m_cgContext );
1625         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1626         CGContextClip( m_cgContext );
1627         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1628         CGContextRestoreGState( m_cgContext);
1629     }
1630     else
1631     {
1632         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1633         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1634         if ( fillStyle == wxODDEVEN_RULE )
1635             CGContextEOFillPath( m_cgContext );
1636         else
1637             CGContextFillPath( m_cgContext );
1638     }
1639 }
1640
1641 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1642 {
1643     // we allow either setting or clearing but not replacing
1644     wxASSERT( m_cgContext == NULL || cg == NULL );
1645
1646     if ( m_cgContext )
1647     {
1648         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1649         CGContextRestoreGState( m_cgContext );
1650         CGContextRestoreGState( m_cgContext );
1651         if ( m_releaseContext )
1652         {
1653 #ifndef __LP64__
1654             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1655 #endif
1656         }
1657         else
1658             CGContextRelease(m_cgContext);
1659     }
1660
1661
1662     m_cgContext = cg;
1663
1664     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1665     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1666     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1667     // for this one operation.
1668
1669     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1670     // can be removed.
1671     if (m_cgContext)
1672     {
1673         CGContextRetain(m_cgContext);
1674         CGContextSaveGState( m_cgContext );
1675         CGContextSaveGState( m_cgContext );
1676         m_releaseContext = false;
1677     }
1678 }
1679
1680 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1681 {
1682     if ( m_cgContext )
1683         CGContextTranslateCTM( m_cgContext, dx, dy );
1684     else
1685         m_windowTransform = CGAffineTransformTranslate(m_windowTransform,dx,dy);
1686 }
1687
1688 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1689 {
1690     if ( m_cgContext )
1691         CGContextScaleCTM( m_cgContext , xScale , yScale );
1692     else
1693         m_windowTransform = CGAffineTransformScale(m_windowTransform,xScale,yScale);
1694 }
1695
1696 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1697 {
1698     if ( m_cgContext )
1699         CGContextRotateCTM( m_cgContext , angle );
1700     else
1701         m_windowTransform = CGAffineTransformRotate(m_windowTransform,angle);
1702 }
1703
1704 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1705 {
1706     EnsureIsValid();
1707
1708     CGImageRef image = (CGImageRef)( bmp.CreateCGImage() );
1709     HIRect r = CGRectMake( x , y , w , h );
1710     if ( bmp.GetDepth() == 1 )
1711     {
1712         // is is a mask, the '1' in the mask tell where to draw the current brush
1713         if (  !m_brush.IsNull() )
1714         {
1715             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1716             {
1717                 // TODO clip to mask
1718             /*
1719                 CGContextSaveGState( m_cgContext );
1720                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1721                 CGContextClip( m_cgContext );
1722                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1723                 CGContextRestoreGState( m_cgContext);
1724             */
1725             }
1726             else
1727             {
1728                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1729                 wxMacDrawCGImage( m_cgContext , &r , image );
1730             }
1731         }
1732     }
1733     else
1734     {
1735         wxMacDrawCGImage( m_cgContext , &r , image );
1736     }
1737     CGImageRelease( image );
1738 }
1739
1740 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1741 {
1742     EnsureIsValid();
1743
1744     CGRect r = CGRectMake( 00 , 00 , w , h );
1745     CGContextSaveGState( m_cgContext );
1746     CGContextTranslateCTM( m_cgContext, x , y + h );
1747     CGContextScaleCTM( m_cgContext, 1, -1 );
1748     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1749         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1750     CGContextRestoreGState( m_cgContext );
1751 }
1752
1753 void wxMacCoreGraphicsContext::PushState()
1754 {
1755     EnsureIsValid();
1756
1757     CGContextSaveGState( m_cgContext );
1758 }
1759
1760 void wxMacCoreGraphicsContext::PopState()
1761 {
1762     EnsureIsValid();
1763
1764     CGContextRestoreGState( m_cgContext );
1765 }
1766
1767 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1768 {
1769     if ( m_font.IsNull() )
1770         return;
1771
1772     EnsureIsValid();
1773 #if wxMAC_USE_CORE_TEXT
1774     if ( UMAGetSystemVersion() >= 0x1050 )
1775     {
1776         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
1777         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
1778         CTFontRef font = fref->GetCTFont();
1779         CGColorRef col = fref->GetColour().GetPixel();
1780         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
1781         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
1782          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
1783         CFTypeRef values[] = { font, col, underlined };
1784         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
1785                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
1786         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
1787         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
1788
1789         y += CTFontGetAscent(font);
1790
1791         CGContextSaveGState(m_cgContext);
1792         CGContextTranslateCTM(m_cgContext, x, y);
1793         CGContextScaleCTM(m_cgContext, 1, -1);
1794         CGContextSetTextPosition(m_cgContext, 0, 0);
1795         CTLineDraw( line, m_cgContext );
1796         CGContextRestoreGState(m_cgContext);
1797         return;
1798     }
1799 #endif
1800 #if wxMAC_USE_ATSU_TEXT
1801     {
1802         DrawText(str, x, y, 0.0);
1803         return;
1804     }
1805 #endif
1806 #if wxMAC_USE_CG_TEXT
1807     // TODO core graphics text implementation here
1808 #endif
1809 }
1810
1811 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1812 {
1813     if ( m_font.IsNull() )
1814         return;
1815
1816     EnsureIsValid();
1817 #if wxMAC_USE_CORE_TEXT
1818     if ( UMAGetSystemVersion() >= 0x1050 )
1819     {
1820         // default implementation takes care of rotation and calls non rotated DrawText afterwards
1821         wxGraphicsContext::DrawText( str, x, y, angle );
1822         return;
1823     }
1824 #endif
1825 #if wxMAC_USE_ATSU_TEXT
1826     {
1827         OSStatus status = noErr;
1828         ATSUTextLayout atsuLayout;
1829         wxMacUniCharBuffer unibuf( str );
1830         UniCharCount chars = unibuf.GetChars();
1831
1832         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1833         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
1834                                                    &chars , &style , &atsuLayout );
1835
1836         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
1837
1838         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1839         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1840
1841         int iAngle = int( angle * RAD2DEG );
1842         if ( abs(iAngle) > 0 )
1843         {
1844             Fixed atsuAngle = IntToFixed( iAngle );
1845             ATSUAttributeTag atsuTags[] =
1846             {
1847                 kATSULineRotationTag ,
1848             };
1849             ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1850             {
1851                 sizeof( Fixed ) ,
1852             };
1853             ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1854             {
1855                 &atsuAngle ,
1856             };
1857             status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1858                                              atsuTags, atsuSizes, atsuValues );
1859         }
1860
1861         {
1862             ATSUAttributeTag atsuTags[] =
1863             {
1864                 kATSUCGContextTag ,
1865             };
1866             ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1867             {
1868                 sizeof( CGContextRef ) ,
1869             };
1870             ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1871             {
1872                 &m_cgContext ,
1873             };
1874             status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1875                                              atsuTags, atsuSizes, atsuValues );
1876         }
1877
1878         ATSUTextMeasurement textBefore, textAfter;
1879         ATSUTextMeasurement ascent, descent;
1880
1881         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1882                                             &textBefore , &textAfter, &ascent , &descent );
1883
1884         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1885
1886         Rect rect;
1887         x += (int)(sin(angle) * FixedToInt(ascent));
1888         y += (int)(cos(angle) * FixedToInt(ascent));
1889
1890         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1891                                         IntToFixed(x) , IntToFixed(y) , &rect );
1892         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1893
1894         CGContextSaveGState(m_cgContext);
1895         CGContextTranslateCTM(m_cgContext, x, y);
1896         CGContextScaleCTM(m_cgContext, 1, -1);
1897         status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1898                                 IntToFixed(0) , IntToFixed(0) );
1899
1900         wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
1901
1902         CGContextRestoreGState(m_cgContext);
1903
1904         ::ATSUDisposeTextLayout(atsuLayout);
1905
1906         return;
1907     }
1908 #endif
1909 #if wxMAC_USE_CG_TEXT
1910     // default implementation takes care of rotation and calls non rotated DrawText afterwards
1911     wxGraphicsContext::DrawText( str, x, y, angle );
1912 #endif
1913 }
1914
1915 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1916                             wxDouble *descent, wxDouble *externalLeading ) const
1917 {
1918     wxCHECK_RET( !m_font.IsNull(), wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
1919
1920     if ( width )
1921         *width = 0;
1922     if ( height )
1923         *height = 0;
1924     if ( descent )
1925         *descent = 0;
1926     if ( externalLeading )
1927         *externalLeading = 0;
1928
1929     if (str.empty())
1930         return;
1931
1932 #if wxMAC_USE_CORE_TEXT
1933     if ( UMAGetSystemVersion() >= 0x1050 )
1934     {
1935         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
1936         CTFontRef font = fref->GetCTFont();
1937
1938         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
1939         CFStringRef keys[] = { kCTFontAttributeName  };
1940         CFTypeRef values[] = { font };
1941         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
1942                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
1943         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
1944         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
1945
1946         CGFloat w, a, d, l;
1947
1948         w = CTLineGetTypographicBounds(line, &a, &d, &l) ;
1949
1950         if ( height )
1951             *height = a+d+l;
1952         if ( descent )
1953             *descent = d;
1954         if ( externalLeading )
1955             *externalLeading = l;
1956         if ( width )
1957             *width = w;
1958         return;
1959     }
1960 #endif
1961 #if wxMAC_USE_ATSU_TEXT
1962     {
1963         OSStatus status = noErr;
1964
1965         ATSUTextLayout atsuLayout;
1966         wxMacUniCharBuffer unibuf( str );
1967         UniCharCount chars = unibuf.GetChars();
1968
1969         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1970         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
1971                                                    &chars , &style , &atsuLayout );
1972
1973         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
1974
1975         ATSUTextMeasurement textBefore, textAfter;
1976         ATSUTextMeasurement textAscent, textDescent;
1977
1978         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1979                                             &textBefore , &textAfter, &textAscent , &textDescent );
1980
1981         if ( height )
1982             *height = FixedToInt(textAscent + textDescent);
1983         if ( descent )
1984             *descent = FixedToInt(textDescent);
1985         if ( externalLeading )
1986             *externalLeading = 0;
1987         if ( width )
1988             *width = FixedToInt(textAfter - textBefore);
1989
1990         ::ATSUDisposeTextLayout(atsuLayout);
1991
1992         return;
1993     }
1994 #endif
1995 #if wxMAC_USE_CG_TEXT
1996     // TODO core graphics text implementation here
1997 #endif
1998 }
1999
2000 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2001 {
2002     widths.Empty();
2003     widths.Add(0, text.length());
2004
2005     if (text.empty())
2006         return;
2007
2008 #if wxMAC_USE_CORE_TEXT
2009     {
2010         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2011         CTFontRef font = fref->GetCTFont();
2012
2013         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
2014         CFStringRef keys[] = { kCTFontAttributeName  };
2015         CFTypeRef values[] = { font };
2016         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2017                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2018         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, t, attributes) );
2019         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2020
2021         int chars = text.length();
2022         for ( int pos = 0; pos < (int)chars; pos ++ )
2023         {
2024             widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL )+0.5;
2025         }
2026
2027         return;
2028     }
2029 #endif
2030 #if wxMAC_USE_ATSU_TEXT
2031     {
2032         ATSUTextLayout atsuLayout;
2033         wxMacUniCharBuffer unibuf( text );
2034         UniCharCount chars = unibuf.GetChars();
2035
2036         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2037         ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2038                                           &chars , &style , &atsuLayout );
2039
2040         for ( int pos = 0; pos < (int)chars; pos ++ )
2041         {
2042             unsigned long actualNumberOfBounds = 0;
2043             ATSTrapezoid glyphBounds;
2044
2045             // We get a single bound, since the text should only require one. If it requires more, there is an issue
2046             OSStatus result;
2047             result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
2048                                         kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
2049             if (result != noErr || actualNumberOfBounds != 1 )
2050                 return;
2051
2052             widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
2053             //unsigned char uch = s[i];
2054         }
2055
2056         ::ATSUDisposeTextLayout(atsuLayout);
2057     }
2058 #endif
2059 #if wxMAC_USE_CG_TEXT
2060     // TODO core graphics text implementation here
2061 #endif
2062 }
2063
2064 void * wxMacCoreGraphicsContext::GetNativeContext()
2065 {
2066     return m_cgContext;
2067 }
2068
2069 // concatenates this transform with the current transform of this context
2070 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
2071 {
2072     if ( m_cgContext )
2073         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2074     else
2075         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
2076 }
2077
2078 // sets the transform of this context
2079 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
2080 {
2081     if ( m_cgContext )
2082     {
2083         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2084         transform = CGAffineTransformInvert( transform ) ;
2085         CGContextConcatCTM( m_cgContext, transform);
2086         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2087     }
2088     else
2089     {
2090         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
2091     }
2092 }
2093
2094 // gets the matrix of this context
2095 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
2096 {
2097     wxGraphicsMatrix m = CreateMatrix();
2098     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
2099         CGContextGetCTM( m_cgContext ));
2100     return m;
2101 }
2102
2103 //
2104 // Renderer
2105 //
2106
2107 //-----------------------------------------------------------------------------
2108 // wxMacCoreGraphicsRenderer declaration
2109 //-----------------------------------------------------------------------------
2110
2111 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2112 {
2113 public :
2114     wxMacCoreGraphicsRenderer() {}
2115
2116     virtual ~wxMacCoreGraphicsRenderer() {}
2117
2118     // Context
2119
2120     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2121     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2122
2123     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2124
2125     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2126
2127     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2128
2129     virtual wxGraphicsContext * CreateMeasuringContext();
2130
2131     // Path
2132
2133     virtual wxGraphicsPath CreatePath();
2134
2135     // Matrix
2136
2137     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2138         wxDouble tx=0.0, wxDouble ty=0.0);
2139
2140
2141     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2142
2143     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2144
2145     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2146     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2147         const wxColour&c1, const wxColour&c2) ;
2148
2149     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2150     // with radius r and color cColor
2151     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2152         const wxColour &oColor, const wxColour &cColor) ;
2153
2154    // sets the font
2155     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2156
2157 private :
2158     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2159 } ;
2160
2161 //-----------------------------------------------------------------------------
2162 // wxMacCoreGraphicsRenderer implementation
2163 //-----------------------------------------------------------------------------
2164
2165 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2166
2167 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2168
2169 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2170 {
2171     return &gs_MacCoreGraphicsRenderer;
2172 }
2173
2174 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc )
2175 {
2176     const wxDCImpl* impl = dc.GetImpl();
2177     wxWindowDCImpl *win_impl = wxDynamicCast( impl, wxWindowDCImpl );
2178     if (win_impl)
2179         return new wxMacCoreGraphicsContext( this,
2180            (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef()) );
2181
2182     return NULL;
2183 }
2184
2185 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC& dc )
2186 {
2187     const wxDCImpl* impl = dc.GetImpl();
2188     wxMemoryDCImpl *mem_impl = wxDynamicCast( impl, wxMemoryDCImpl );
2189     if (mem_impl)
2190         return new wxMacCoreGraphicsContext( this,
2191             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()) );
2192
2193     return NULL;
2194 }
2195
2196 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2197 {
2198     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2199 }
2200
2201
2202 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2203 {
2204     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
2205 }
2206
2207 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2208 {
2209     return new wxMacCoreGraphicsContext(this, window );
2210 }
2211
2212 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2213 {
2214     return new wxMacCoreGraphicsContext(this);
2215 }
2216
2217 // Path
2218
2219 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2220 {
2221     wxGraphicsPath m;
2222     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2223     return m;
2224 }
2225
2226
2227 // Matrix
2228
2229 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2230     wxDouble tx, wxDouble ty)
2231 {
2232     wxGraphicsMatrix m;
2233     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2234     data->Set( a,b,c,d,tx,ty ) ;
2235     m.SetRefData(data);
2236     return m;
2237 }
2238
2239 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2240 {
2241     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
2242         return wxNullGraphicsPen;
2243     else
2244     {
2245         wxGraphicsPen p;
2246         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2247         return p;
2248     }
2249 }
2250
2251 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2252 {
2253     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2254         return wxNullGraphicsBrush;
2255     else
2256     {
2257         wxGraphicsBrush p;
2258         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2259         return p;
2260     }
2261 }
2262
2263 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2264 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2265     const wxColour&c1, const wxColour&c2)
2266 {
2267     wxGraphicsBrush p;
2268     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2269     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
2270     p.SetRefData(d);
2271     return p;
2272 }
2273
2274 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2275 // with radius r and color cColor
2276 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2277     const wxColour &oColor, const wxColour &cColor)
2278 {
2279     wxGraphicsBrush p;
2280     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2281     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2282     p.SetRefData(d);
2283     return p;
2284 }
2285
2286 // sets the font
2287 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2288 {
2289     if ( font.Ok() )
2290     {
2291         wxGraphicsFont p;
2292         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2293         return p;
2294     }
2295     else
2296         return wxNullGraphicsFont;
2297 }
2298
2299 //
2300 // CoreGraphics Helper Methods
2301 //
2302
2303 // Data Providers and Consumers
2304
2305 size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
2306 {
2307     CFMutableDataRef data = (CFMutableDataRef) info;
2308     if ( data )
2309     {
2310         CFDataAppendBytes( data, (const UInt8*) bytes, count );
2311     }
2312     return count;
2313 }
2314
2315 void wxMacReleaseCFDataProviderCallback(void *info,
2316                                       const void *WXUNUSED(data),
2317                                       size_t WXUNUSED(count))
2318 {
2319     if ( info )
2320         CFRelease( (CFDataRef) info );
2321 }
2322
2323 void wxMacReleaseCFDataConsumerCallback( void *info )
2324 {
2325     if ( info )
2326         CFRelease( (CFDataRef) info );
2327 }
2328
2329 CGDataProviderRef wxMacCGDataProviderCreateWithCFData( CFDataRef data )
2330 {
2331     if ( data == NULL )
2332         return NULL;
2333
2334     return CGDataProviderCreateWithCFData( data );
2335 }
2336
2337 CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data )
2338 {
2339     if ( data == NULL )
2340         return NULL;
2341
2342     return CGDataConsumerCreateWithCFData( data );
2343 }
2344
2345 void wxMacReleaseMemoryBufferProviderCallback(void *info, const void *data, size_t WXUNUSED(size))
2346 {
2347     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
2348
2349     wxASSERT( data == membuf->GetData() ) ;
2350
2351     delete membuf ;
2352 }
2353
2354 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf )
2355 {
2356     wxMemoryBuffer* b = new wxMemoryBuffer( buf );
2357     if ( b->GetDataLen() == 0 )
2358         return NULL;
2359
2360     return CGDataProviderCreateWithData( b , (const void *) b->GetData() , b->GetDataLen() ,
2361                                                  wxMacReleaseMemoryBufferProviderCallback );
2362 }