src/osx/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/graphics.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/dcprint.h"
  21     #include "wx/log.h"
  22     #include "wx/region.h"
  23     #include "wx/image.h"
  24     #include "wx/icon.h"
  25 #endif
  26
  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 #ifdef __WXMAC__
  38     #include "wx/osx/private.h"
  39     #include "wx/osx/dcprint.h"
  40     #include "wx/osx/dcclient.h"
  41     #include "wx/osx/dcmemory.h"
  42     #include "wx/osx/private.h"
  43 #else
  44     #include "CoreServices/CoreServices.h"
  45     #include "ApplicationServices/ApplicationServices.h"
  46     #include "wx/osx/core/cfstring.h"
  47     #include "wx/cocoa/dcclient.h"
  48 #endif
  49
  50 #ifdef __WXCOCOA__
  51
  52 CGColorSpaceRef wxMacGetGenericRGBColorSpace()
  53 {
  54     static wxCFRef<CGColorSpaceRef> genericRGBColorSpace;
  55
  56     if (genericRGBColorSpace == NULL)
  57     {
  58         genericRGBColorSpace.reset( CGColorSpaceCreateWithName( kCGColorSpaceGenericRGB ) );
  59     }
  60
  61     return genericRGBColorSpace;
  62 }
  63
  64 int UMAGetSystemVersion()
  65 {
  66     return 0x1050;
  67 }
  68
  69
  70 #define wxOSX_USE_CORE_TEXT 1
  71
  72 #endif
  73
  74 #if wxOSX_USE_COCOA_OR_IPHONE
  75 extern CGContextRef wxOSXGetContextFromCurrentContext() ;
  76 #if wxOSX_USE_COCOA
  77 extern bool wxOSXLockFocus( WXWidget view) ;
  78 extern void wxOSXUnlockFocus( WXWidget view) ;
  79 #endif
  80 #endif
  81
  82 #if 1 // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
  83
  84 // TODO test whether this private API also works under 10.3
  85
  86 // copying values from NSCompositingModes (see also webkit and cairo sources)
  87
  88 typedef enum CGCompositeOperation {
  89    kCGCompositeOperationClear           = 0,
  90    kCGCompositeOperationCopy            = 1,
  91    kCGCompositeOperationSourceOver      = 2,
  92    kCGCompositeOperationSourceIn        = 3,
  93    kCGCompositeOperationSourceOut       = 4,
  94    kCGCompositeOperationSourceAtop      = 5,
  95    kCGCompositeOperationDestinationOver = 6,
  96    kCGCompositeOperationDestinationIn   = 7,
  97    kCGCompositeOperationDestinationOut  = 8,
  98    kCGCompositeOperationDestinationAtop = 9,
  99    kCGCompositeOperationXOR             = 10,
 100    kCGCompositeOperationPlusDarker      = 11,
 101 // NS only, unsupported by CG : Highlight
 102    kCGCompositeOperationPlusLighter     = 12
 103 } CGCompositeOperation ;
 104
 105 extern "C"
 106 {
 107    CG_EXTERN void CGContextSetCompositeOperation (CGContextRef context, int operation);
 108 } ;
 109
 110 #endif
 111
 112 //-----------------------------------------------------------------------------
 113 // constants
 114 //-----------------------------------------------------------------------------
 115
 116 #ifndef M_PI
 117 const double M_PI = 3.14159265358979;
 118 #endif
 119
 120 static const double RAD2DEG = 180.0 / M_PI;
 121
 122 //
 123 // Pen, Brushes and Fonts
 124 //
 125
 126 #pragma mark -
 127 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
 128
 129 OSStatus wxMacDrawCGImage(
 130                   CGContextRef    inContext,
 131                   const CGRect *  inBounds,
 132                   CGImageRef      inImage)
 133 {
 134 #if wxOSX_USE_CARBON
 135     return HIViewDrawCGImage( inContext, inBounds, inImage );
 136 #else
 137     CGContextSaveGState(inContext);
 138     CGContextTranslateCTM(inContext, inBounds->origin.x, inBounds->origin.y + inBounds->size.height);
 139     CGRect r = *inBounds;
 140     r.origin.x = r.origin.y = 0;
 141     CGContextScaleCTM(inContext, 1, -1);
 142     CGContextDrawImage(inContext, r, inImage );
 143     CGContextRestoreGState(inContext);
 144     return noErr;
 145 #endif
 146 }
 147
 148 CGColorRef wxMacCreateCGColor( const wxColour& col )
 149 {
 150     CGColorRef retval = col.CreateCGColor();
 151
 152     wxASSERT(retval != NULL);
 153     return retval;
 154 }
 155
 156 #if wxOSX_USE_CORE_TEXT
 157
 158 CTFontRef wxMacCreateCTFont( const wxFont& font )
 159 {
 160 #ifdef __WXMAC__
 161     return wxCFRetain((CTFontRef) font.OSXGetCTFont());
 162 #else
 163     return CTFontCreateWithName( wxCFStringRef( font.GetFaceName(), wxLocale::GetSystemEncoding() ) , font.GetPointSize() , NULL );
 164 #endif
 165 }
 166
 167 #endif
 168
 169 // CGPattern wrapper class: always allocate on heap, never call destructor
 170
 171 class wxMacCoreGraphicsPattern
 172 {
 173 public :
 174     wxMacCoreGraphicsPattern() {}
 175
 176     // is guaranteed to be called only with a non-Null CGContextRef
 177     virtual void Render( CGContextRef ctxRef ) = 0;
 178
 179     operator CGPatternRef() const { return m_patternRef; }
 180
 181 protected :
 182     virtual ~wxMacCoreGraphicsPattern()
 183     {
 184         // as this is called only when the m_patternRef is been released;
 185         // don't release it again
 186     }
 187
 188     static void _Render( void *info, CGContextRef ctxRef )
 189     {
 190         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 191         if ( self && ctxRef )
 192             self->Render( ctxRef );
 193     }
 194
 195     static void _Dispose( void *info )
 196     {
 197         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 198         delete self;
 199     }
 200
 201     CGPatternRef m_patternRef;
 202
 203     static const CGPatternCallbacks ms_Callbacks;
 204 };
 205
 206 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
 207
 208 class ImagePattern : public wxMacCoreGraphicsPattern
 209 {
 210 public :
 211     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 212     {
 213         wxASSERT( bmp && bmp->IsOk() );
 214 #ifdef __WXMAC__
 215         Init( (CGImageRef) bmp->CreateCGImage() , transform );
 216 #endif
 217     }
 218
 219     // ImagePattern takes ownership of CGImageRef passed in
 220     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 221     {
 222         if ( image )
 223             CFRetain( image );
 224
 225         Init( image , transform );
 226     }
 227
 228     virtual void Render( CGContextRef ctxRef )
 229     {
 230         if (m_image != NULL)
 231             wxMacDrawCGImage( ctxRef, &m_imageBounds, m_image );
 232     }
 233
 234 protected :
 235     void Init( CGImageRef image, const CGAffineTransform& transform )
 236     {
 237         m_image = image;
 238         if ( m_image )
 239         {
 240             m_imageBounds = CGRectMake( (CGFloat) 0.0, (CGFloat) 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 241             m_patternRef = CGPatternCreate(
 242                 this , m_imageBounds, transform ,
 243                 m_imageBounds.size.width, m_imageBounds.size.height,
 244                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 245         }
 246     }
 247
 248     virtual ~ImagePattern()
 249     {
 250         if ( m_image )
 251             CGImageRelease( m_image );
 252     }
 253
 254     CGImageRef m_image;
 255     CGRect m_imageBounds;
 256 };
 257
 258 class HatchPattern : public wxMacCoreGraphicsPattern
 259 {
 260 public :
 261     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 262     {
 263         m_hatch = hatchstyle;
 264         m_imageBounds = CGRectMake( (CGFloat) 0.0, (CGFloat) 0.0, (CGFloat) 8.0 , (CGFloat) 8.0 );
 265         m_patternRef = CGPatternCreate(
 266             this , m_imageBounds, transform ,
 267             m_imageBounds.size.width, m_imageBounds.size.height,
 268             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 269     }
 270
 271     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 272     {
 273         CGContextStrokeLineSegments( ctxRef , pts , count );
 274     }
 275
 276     virtual void Render( CGContextRef ctxRef )
 277     {
 278         switch ( m_hatch )
 279         {
 280             case wxBDIAGONAL_HATCH :
 281                 {
 282                     CGPoint pts[] =
 283                     {
 284                     { (CGFloat) 8.0 , (CGFloat) 0.0 } , { (CGFloat) 0.0 , (CGFloat) 8.0 }
 285                     };
 286                     StrokeLineSegments( ctxRef , pts , 2 );
 287                 }
 288                 break;
 289
 290             case wxCROSSDIAG_HATCH :
 291                 {
 292                     CGPoint pts[] =
 293                     {
 294                         { (CGFloat) 0.0 , (CGFloat) 0.0 } , { (CGFloat) 8.0 , (CGFloat) 8.0 } ,
 295                         { (CGFloat) 8.0 , (CGFloat) 0.0 } , { (CGFloat) 0.0 , (CGFloat) 8.0 }
 296                     };
 297                     StrokeLineSegments( ctxRef , pts , 4 );
 298                 }
 299                 break;
 300
 301             case wxFDIAGONAL_HATCH :
 302                 {
 303                     CGPoint pts[] =
 304                     {
 305                     { (CGFloat) 0.0 , (CGFloat) 0.0 } , { (CGFloat) 8.0 , (CGFloat) 8.0 }
 306                     };
 307                     StrokeLineSegments( ctxRef , pts , 2 );
 308                 }
 309                 break;
 310
 311             case wxCROSS_HATCH :
 312                 {
 313                     CGPoint pts[] =
 314                     {
 315                     { (CGFloat) 0.0 , (CGFloat) 4.0 } , { (CGFloat) 8.0 , (CGFloat) 4.0 } ,
 316                     { (CGFloat) 4.0 , (CGFloat) 0.0 } , { (CGFloat) 4.0 , (CGFloat) 8.0 } ,
 317                     };
 318                     StrokeLineSegments( ctxRef , pts , 4 );
 319                 }
 320                 break;
 321
 322             case wxHORIZONTAL_HATCH :
 323                 {
 324                     CGPoint pts[] =
 325                     {
 326                     { (CGFloat) 0.0 , (CGFloat) 4.0 } , { (CGFloat) 8.0 , (CGFloat) 4.0 } ,
 327                     };
 328                     StrokeLineSegments( ctxRef , pts , 2 );
 329                 }
 330                 break;
 331
 332             case wxVERTICAL_HATCH :
 333                 {
 334                     CGPoint pts[] =
 335                     {
 336                     { (CGFloat) 4.0 , (CGFloat) 0.0 } , { (CGFloat) 4.0 , (CGFloat) 8.0 } ,
 337                     };
 338                     StrokeLineSegments( ctxRef , pts , 2 );
 339                 }
 340                 break;
 341
 342             default:
 343                 break;
 344         }
 345     }
 346
 347 protected :
 348     virtual ~HatchPattern() {}
 349
 350     CGRect      m_imageBounds;
 351     int         m_hatch;
 352 };
 353
 354 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 355 {
 356 public:
 357     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 358     ~wxMacCoreGraphicsPenData();
 359
 360     void Init();
 361     virtual void Apply( wxGraphicsContext* context );
 362     virtual wxDouble GetWidth() { return m_width; }
 363
 364 protected :
 365     CGLineCap m_cap;
 366     wxCFRef<CGColorRef> m_color;
 367     wxCFRef<CGColorSpaceRef> m_colorSpace;
 368
 369     CGLineJoin m_join;
 370     CGFloat m_width;
 371
 372     int m_count;
 373     const CGFloat *m_lengths;
 374     CGFloat *m_userLengths;
 375
 376
 377     bool m_isPattern;
 378     wxCFRef<CGPatternRef> m_pattern;
 379     CGFloat* m_patternColorComponents;
 380 };
 381
 382 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 383     wxGraphicsObjectRefData( renderer )
 384 {
 385     Init();
 386
 387     m_color.reset( wxMacCreateCGColor( pen.GetColour() ) ) ;
 388
 389     // TODO: * m_dc->m_scaleX
 390     m_width = pen.GetWidth();
 391     if (m_width <= 0.0)
 392         m_width = (CGFloat) 0.1;
 393
 394     switch ( pen.GetCap() )
 395     {
 396         case wxCAP_ROUND :
 397             m_cap = kCGLineCapRound;
 398             break;
 399
 400         case wxCAP_PROJECTING :
 401             m_cap = kCGLineCapSquare;
 402             break;
 403
 404         case wxCAP_BUTT :
 405             m_cap = kCGLineCapButt;
 406             break;
 407
 408         default :
 409             m_cap = kCGLineCapButt;
 410             break;
 411     }
 412
 413     switch ( pen.GetJoin() )
 414     {
 415         case wxJOIN_BEVEL :
 416             m_join = kCGLineJoinBevel;
 417             break;
 418
 419         case wxJOIN_MITER :
 420             m_join = kCGLineJoinMiter;
 421             break;
 422
 423         case wxJOIN_ROUND :
 424             m_join = kCGLineJoinRound;
 425             break;
 426
 427         default :
 428             m_join = kCGLineJoinMiter;
 429             break;
 430     }
 431
 432     const CGFloat dashUnit = m_width < 1.0 ? (CGFloat) 1.0 : m_width;
 433
 434     const CGFloat dotted[] = { (CGFloat) dashUnit , (CGFloat) (dashUnit + 2.0) };
 435     static const CGFloat short_dashed[] = { (CGFloat) 9.0 , (CGFloat) 6.0 };
 436     static const CGFloat dashed[] = { (CGFloat) 19.0 , (CGFloat) 9.0 };
 437     static const CGFloat dotted_dashed[] = { (CGFloat) 9.0 , (CGFloat) 6.0 , (CGFloat) 3.0 , (CGFloat) 3.0 };
 438
 439     switch ( pen.GetStyle() )
 440     {
 441         case wxPENSTYLE_SOLID:
 442             break;
 443
 444         case wxPENSTYLE_DOT:
 445             m_count = WXSIZEOF(dotted);
 446             m_userLengths = new CGFloat[ m_count ] ;
 447             memcpy( m_userLengths, dotted, sizeof(dotted) );
 448             m_lengths = m_userLengths;
 449             break;
 450
 451         case wxPENSTYLE_LONG_DASH:
 452             m_count = WXSIZEOF(dashed);
 453             m_lengths = dashed;
 454             break;
 455
 456         case wxPENSTYLE_SHORT_DASH:
 457             m_count = WXSIZEOF(short_dashed);
 458             m_lengths = short_dashed;
 459             break;
 460
 461         case wxPENSTYLE_DOT_DASH:
 462             m_count = WXSIZEOF(dotted_dashed);
 463             m_lengths = dotted_dashed;
 464             break;
 465
 466         case wxPENSTYLE_USER_DASH:
 467             wxDash *dashes;
 468             m_count = pen.GetDashes( &dashes );
 469             if ((dashes != NULL) && (m_count > 0))
 470             {
 471                 m_userLengths = new CGFloat[m_count];
 472                 for ( int i = 0; i < m_count; ++i )
 473                 {
 474                     m_userLengths[i] = dashes[i] * dashUnit;
 475
 476                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 477                         m_userLengths[i] = (CGFloat) (dashUnit + 2.0);
 478                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 479                         m_userLengths[i] = dashUnit;
 480                 }
 481             }
 482             m_lengths = m_userLengths;
 483             break;
 484
 485         case wxPENSTYLE_STIPPLE:
 486             {
 487                 wxBitmap* bmp = pen.GetStipple();
 488                 if ( bmp && bmp->IsOk() )
 489                 {
 490                     m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 491                     m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 492                     m_patternColorComponents = new CGFloat[1] ;
 493                     m_patternColorComponents[0] = (CGFloat) 1.0;
 494                     m_isPattern = true;
 495                 }
 496             }
 497             break;
 498
 499         default :
 500             {
 501                 m_isPattern = true;
 502                 m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 503                 m_pattern.reset( (CGPatternRef) *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 504                 m_patternColorComponents = new CGFloat[4] ;
 505                 m_patternColorComponents[0] = (CGFloat) (pen.GetColour().Red() / 255.0);
 506                 m_patternColorComponents[1] = (CGFloat) (pen.GetColour().Green() / 255.0);
 507                 m_patternColorComponents[2] = (CGFloat) (pen.GetColour().Blue() / 255.0);
 508                 m_patternColorComponents[3] =  (CGFloat) (pen.GetColour().Alpha() / 255.0);
 509             }
 510             break;
 511     }
 512     if ((m_lengths != NULL) && (m_count > 0))
 513     {
 514         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 515         m_cap = kCGLineCapButt;
 516     }
 517 }
 518
 519 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 520 {
 521     delete[] m_userLengths;
 522     delete[] m_patternColorComponents;
 523 }
 524
 525 void wxMacCoreGraphicsPenData::Init()
 526 {
 527     m_lengths = NULL;
 528     m_userLengths = NULL;
 529     m_width = 0;
 530     m_count = 0;
 531     m_patternColorComponents = NULL;
 532     m_isPattern = false;
 533 }
 534
 535 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 536 {
 537     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 538     CGContextSetLineWidth( cg , m_width );
 539     CGContextSetLineJoin( cg , m_join );
 540
 541     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 542     CGContextSetLineCap( cg , m_cap );
 543
 544     if ( m_isPattern )
 545     {
 546         CGAffineTransform matrix = CGContextGetCTM( cg );
 547         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 548         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 549         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 550     }
 551     else
 552     {
 553         CGContextSetStrokeColorWithColor( cg , m_color );
 554     }
 555 }
 556
 557 //
 558 // Brush
 559 //
 560
 561 // make sure we all use one class for all conversions from wx to native colour
 562
 563 class wxMacCoreGraphicsColour
 564 {
 565     public:
 566         wxMacCoreGraphicsColour();
 567         wxMacCoreGraphicsColour(const wxBrush &brush);
 568         ~wxMacCoreGraphicsColour();
 569
 570         void Apply( CGContextRef cgContext );
 571     protected:
 572         void Init();
 573         wxCFRef<CGColorRef> m_color;
 574         wxCFRef<CGColorSpaceRef> m_colorSpace;
 575
 576         bool m_isPattern;
 577         wxCFRef<CGPatternRef> m_pattern;
 578         CGFloat* m_patternColorComponents;
 579 } ;
 580
 581 wxMacCoreGraphicsColour::~wxMacCoreGraphicsColour()
 582 {
 583     delete[] m_patternColorComponents;
 584 }
 585
 586 void wxMacCoreGraphicsColour::Init()
 587 {
 588     m_isPattern = false;
 589     m_patternColorComponents = NULL;
 590 }
 591
 592 void wxMacCoreGraphicsColour::Apply( CGContextRef cgContext )
 593 {
 594     if ( m_isPattern )
 595     {
 596         CGAffineTransform matrix = CGContextGetCTM( cgContext );
 597         CGContextSetPatternPhase( cgContext, CGSizeMake(matrix.tx, matrix.ty) );
 598         CGContextSetFillColorSpace( cgContext , m_colorSpace );
 599         CGContextSetFillPattern( cgContext, m_pattern , m_patternColorComponents );
 600     }
 601     else
 602     {
 603         CGContextSetFillColorWithColor( cgContext, m_color );
 604     }
 605 }
 606
 607 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour()
 608 {
 609     Init();
 610 }
 611
 612 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
 613 {
 614     Init();
 615     if ( brush.GetStyle() == wxSOLID )
 616     {
 617         m_color.reset( wxMacCreateCGColor( brush.GetColour() ));
 618     }
 619     else if ( brush.IsHatch() )
 620     {
 621         m_isPattern = true;
 622         m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 623         m_pattern.reset( (CGPatternRef) *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 624
 625         m_patternColorComponents = new CGFloat[4] ;
 626         m_patternColorComponents[0] = (CGFloat) (brush.GetColour().Red() / 255.0);
 627         m_patternColorComponents[1] = (CGFloat) (brush.GetColour().Green() / 255.0);
 628         m_patternColorComponents[2] = (CGFloat) (brush.GetColour().Blue() / 255.0);
 629         m_patternColorComponents[3] = (CGFloat) (brush.GetColour().Alpha() / 255.0);
 630     }
 631     else
 632     {
 633         // now brush is a bitmap
 634         wxBitmap* bmp = brush.GetStipple();
 635         if ( bmp && bmp->IsOk() )
 636         {
 637             m_isPattern = true;
 638             m_patternColorComponents = new CGFloat[1] ;
 639             m_patternColorComponents[0] = (CGFloat) 1.0;
 640             m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 641             m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 642         }
 643     }
 644 }
 645
 646 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 647 {
 648 public:
 649     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 650     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 651     ~wxMacCoreGraphicsBrushData ();
 652
 653     virtual void Apply( wxGraphicsContext* context );
 654     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 655                                    wxDouble x2, wxDouble y2,
 656                                    const wxGraphicsGradientStops& stops);
 657     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 658                                    wxDouble xc, wxDouble yc, wxDouble radius,
 659                                    const wxGraphicsGradientStops& stops);
 660
 661     virtual bool IsShading() { return m_isShading; }
 662     CGShadingRef GetShading() { return m_shading; }
 663 protected:
 664     CGFunctionRef CreateGradientFunction(const wxGraphicsGradientStops& stops);
 665
 666     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 667     virtual void Init();
 668
 669     wxMacCoreGraphicsColour m_cgColor;
 670
 671     bool m_isShading;
 672     CGFunctionRef m_gradientFunction;
 673     CGShadingRef m_shading;
 674
 675     // information about a single gradient component
 676     struct GradientComponent
 677     {
 678         CGFloat pos;
 679         CGFloat red;
 680         CGFloat green;
 681         CGFloat blue;
 682         CGFloat alpha;
 683     };
 684
 685     // and information about all of them
 686     struct GradientComponents
 687     {
 688         GradientComponents()
 689         {
 690             count = 0;
 691             comps = NULL;
 692         }
 693
 694         void Init(unsigned count_)
 695         {
 696             count = count_;
 697             comps = new GradientComponent[count];
 698         }
 699
 700         ~GradientComponents()
 701         {
 702             delete [] comps;
 703         }
 704
 705         unsigned count;
 706         GradientComponent *comps;
 707     };
 708
 709     GradientComponents m_gradientComponents;
 710 };
 711
 712 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 713 {
 714     Init();
 715 }
 716
 717 void
 718 wxMacCoreGraphicsBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 719                                                       wxDouble x2, wxDouble y2,
 720                                                       const wxGraphicsGradientStops& stops)
 721 {
 722     m_gradientFunction = CreateGradientFunction(stops);
 723     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) x1, (CGFloat) y1),
 724                                         CGPointMake((CGFloat) x2,(CGFloat) y2), m_gradientFunction, true, true ) ;
 725     m_isShading = true ;
 726 }
 727
 728 void
 729 wxMacCoreGraphicsBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 730                                                       wxDouble xc, wxDouble yc,
 731                                                       wxDouble radius,
 732                                                       const wxGraphicsGradientStops& stops)
 733 {
 734     m_gradientFunction = CreateGradientFunction(stops);
 735     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) xo,(CGFloat) yo), 0,
 736                                         CGPointMake((CGFloat) xc,(CGFloat) yc), (CGFloat) radius, m_gradientFunction, true, true ) ;
 737     m_isShading = true ;
 738 }
 739
 740 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer ),
 741     m_cgColor( brush )
 742 {
 743     Init();
 744
 745 }
 746
 747 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 748 {
 749     if ( m_shading )
 750         CGShadingRelease(m_shading);
 751
 752     if( m_gradientFunction )
 753         CGFunctionRelease(m_gradientFunction);
 754 }
 755
 756 void wxMacCoreGraphicsBrushData::Init()
 757 {
 758     m_gradientFunction = NULL;
 759     m_shading = NULL;
 760     m_isShading = false;
 761 }
 762
 763 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 764 {
 765     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 766
 767     if ( m_isShading )
 768     {
 769         // nothing to set as shades are processed by clipping using the path and filling
 770     }
 771     else
 772     {
 773         m_cgColor.Apply( cg );
 774     }
 775 }
 776
 777 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 778 {
 779     const GradientComponents& stops = *(GradientComponents*) info ;
 780
 781     CGFloat f = *in;
 782     if (f <= 0.0)
 783     {
 784         // Start
 785         out[0] = stops.comps[0].red;
 786         out[1] = stops.comps[0].green;
 787         out[2] = stops.comps[0].blue;
 788         out[3] = stops.comps[0].alpha;
 789     }
 790     else if (f >= 1.0)
 791     {
 792         // end
 793         out[0] = stops.comps[stops.count - 1].red;
 794         out[1] = stops.comps[stops.count - 1].green;
 795         out[2] = stops.comps[stops.count - 1].blue;
 796         out[3] = stops.comps[stops.count - 1].alpha;
 797     }
 798     else
 799     {
 800         // Find first component with position greater than f
 801         unsigned i;
 802         for ( i = 0; i < stops.count; i++ )
 803         {
 804             if (stops.comps[i].pos > f)
 805                 break;
 806         }
 807
 808         // Interpolated between stops
 809         CGFloat diff = (f - stops.comps[i-1].pos);
 810         CGFloat range = (stops.comps[i].pos - stops.comps[i-1].pos);
 811         CGFloat fact = diff / range;
 812
 813         out[0] = stops.comps[i - 1].red + (stops.comps[i].red - stops.comps[i - 1].red) * fact;
 814         out[1] = stops.comps[i - 1].green + (stops.comps[i].green - stops.comps[i - 1].green) * fact;
 815         out[2] = stops.comps[i - 1].blue + (stops.comps[i].blue - stops.comps[i - 1].blue) * fact;
 816         out[3] = stops.comps[i - 1].alpha + (stops.comps[i].alpha - stops.comps[i - 1].alpha) * fact;
 817     }
 818 }
 819
 820 CGFunctionRef
 821 wxMacCoreGraphicsBrushData::CreateGradientFunction(const wxGraphicsGradientStops& stops)
 822 {
 823
 824     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 825     static const CGFloat input_value_range [2] = { 0, 1 };
 826     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 827
 828     m_gradientComponents.Init(stops.GetCount());
 829     for ( unsigned i = 0; i < m_gradientComponents.count; i++ )
 830     {
 831         const wxGraphicsGradientStop stop = stops.Item(i);
 832
 833         m_gradientComponents.comps[i].pos = stop.GetPosition();
 834
 835         const wxColour col = stop.GetColour();
 836         m_gradientComponents.comps[i].red = (CGFloat) (col.Red() / 255.0);
 837         m_gradientComponents.comps[i].green = (CGFloat) (col.Green() / 255.0);
 838         m_gradientComponents.comps[i].blue = (CGFloat) (col.Blue() / 255.0);
 839         m_gradientComponents.comps[i].alpha = (CGFloat) (col.Alpha() / 255.0);
 840     }
 841
 842     return CGFunctionCreate ( &m_gradientComponents,  1,
 843                             input_value_range,
 844                             4,
 845                             output_value_ranges,
 846                             &callbacks);
 847 }
 848
 849 //
 850 // Font
 851 //
 852
 853 #if wxOSX_USE_IPHONE
 854
 855 extern UIFont* CreateUIFont( const wxFont& font );
 856 extern void DrawTextInContext( CGContextRef context, CGPoint where, UIFont *font, NSString* text );
 857 extern CGSize MeasureTextInContext( UIFont *font, NSString* text );
 858
 859 #endif
 860
 861 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 862 {
 863 public:
 864     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 865     ~wxMacCoreGraphicsFontData();
 866
 867 #if wxOSX_USE_ATSU_TEXT
 868     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 869 #endif
 870 #if wxOSX_USE_CORE_TEXT
 871     CTFontRef OSXGetCTFont() const { return m_ctFont ; }
 872 #endif
 873     wxColour GetColour() const { return m_colour ; }
 874
 875     bool GetUnderlined() const { return m_underlined ; }
 876 #if wxOSX_USE_IPHONE
 877     UIFont* GetUIFont() const { return m_uiFont; }
 878 #endif
 879 private :
 880     wxColour m_colour;
 881     bool m_underlined;
 882 #if wxOSX_USE_ATSU_TEXT
 883     ATSUStyle m_macATSUIStyle;
 884 #endif
 885 #if wxOSX_USE_CORE_TEXT
 886     wxCFRef< CTFontRef > m_ctFont;
 887 #endif
 888 #if wxOSX_USE_IPHONE
 889     UIFont*  m_uiFont;
 890 #endif
 891 };
 892
 893 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 894 {
 895     m_colour = col;
 896     m_underlined = font.GetUnderlined();
 897
 898 #if wxOSX_USE_CORE_TEXT
 899     m_ctFont.reset( wxMacCreateCTFont( font ) );
 900 #endif
 901 #if wxOSX_USE_IPHONE
 902     m_uiFont = CreateUIFont(font);
 903     wxMacCocoaRetain( m_uiFont );
 904 #endif
 905 #if wxOSX_USE_ATSU_TEXT
 906     OSStatus status = noErr;
 907     m_macATSUIStyle = NULL;
 908
 909     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 910
 911     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 912
 913     // we need the scale here ...
 914
 915     Fixed atsuSize = IntToFixed( int( 1 * font.GetPointSize()) );
 916     RGBColor atsuColor ;
 917     col.GetRGBColor( &atsuColor );
 918     ATSUAttributeTag atsuTags[] =
 919     {
 920             kATSUSizeTag ,
 921             kATSUColorTag ,
 922     };
 923     ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
 924     {
 925             sizeof( Fixed ) ,
 926             sizeof( RGBColor ) ,
 927     };
 928     ATSUAttributeValuePtr atsuValues[WXSIZEOF(atsuTags)] =
 929     {
 930             &atsuSize ,
 931             &atsuColor ,
 932     };
 933
 934     status = ::ATSUSetAttributes(
 935         m_macATSUIStyle, WXSIZEOF(atsuTags),
 936         atsuTags, atsuSizes, atsuValues);
 937
 938     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 939 #endif
 940 }
 941
 942 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 943 {
 944 #if wxOSX_USE_CORE_TEXT
 945 #endif
 946 #if wxOSX_USE_ATSU_TEXT
 947     if ( m_macATSUIStyle )
 948     {
 949         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 950         m_macATSUIStyle = NULL;
 951     }
 952 #endif
 953 #if wxOSX_USE_IPHONE
 954     wxMacCocoaRelease( m_uiFont );
 955 #endif
 956 }
 957
 958 class wxMacCoreGraphicsBitmapData : public wxGraphicsBitmapData
 959 {
 960 public:
 961     wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome );
 962     ~wxMacCoreGraphicsBitmapData();
 963
 964     virtual CGImageRef GetBitmap() { return m_bitmap; }
 965     virtual void* GetNativeBitmap() const { return m_bitmap; }
 966     bool IsMonochrome() { return m_monochrome; }
 967
 968 #if wxUSE_IMAGE
 969     wxImage ConvertToImage() const
 970     {
 971         return wxBitmap(m_bitmap).ConvertToImage();
 972     }
 973 #endif // wxUSE_IMAGE
 974
 975 private :
 976     CGImageRef m_bitmap;
 977     bool m_monochrome;
 978 };
 979
 980 wxMacCoreGraphicsBitmapData::wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome ) : wxGraphicsBitmapData( renderer ),
 981     m_bitmap(bitmap), m_monochrome(monochrome)
 982 {
 983 }
 984
 985 wxMacCoreGraphicsBitmapData::~wxMacCoreGraphicsBitmapData()
 986 {
 987     CGImageRelease( m_bitmap );
 988 }
 989
 990
 991 //
 992 // Graphics Matrix
 993 //
 994
 995 //-----------------------------------------------------------------------------
 996 // wxMacCoreGraphicsMatrix declaration
 997 //-----------------------------------------------------------------------------
 998
 999 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
1000 {
1001 public :
1002     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
1003
1004     virtual ~wxMacCoreGraphicsMatrixData() ;
1005
1006     virtual wxGraphicsObjectRefData *Clone() const ;
1007
1008     // concatenates the matrix
1009     virtual void Concat( const wxGraphicsMatrixData *t );
1010
1011     // sets the matrix to the respective values
1012     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1013         wxDouble tx=0.0, wxDouble ty=0.0);
1014
1015     // gets the component valuess of the matrix
1016     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
1017                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
1018
1019     // makes this the inverse matrix
1020     virtual void Invert();
1021
1022     // returns true if the elements of the transformation matrix are equal ?
1023     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
1024
1025     // return true if this is the identity matrix
1026     virtual bool IsIdentity() const;
1027
1028     //
1029     // transformation
1030     //
1031
1032     // add the translation to this matrix
1033     virtual void Translate( wxDouble dx , wxDouble dy );
1034
1035     // add the scale to this matrix
1036     virtual void Scale( wxDouble xScale , wxDouble yScale );
1037
1038     // add the rotation to this matrix (radians)
1039     virtual void Rotate( wxDouble angle );
1040
1041     //
1042     // apply the transforms
1043     //
1044
1045     // applies that matrix to the point
1046     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
1047
1048     // applies the matrix except for translations
1049     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
1050
1051     // returns the native representation
1052     virtual void * GetNativeMatrix() const;
1053
1054 private :
1055     CGAffineTransform m_matrix;
1056 } ;
1057
1058 //-----------------------------------------------------------------------------
1059 // wxMacCoreGraphicsMatrix implementation
1060 //-----------------------------------------------------------------------------
1061
1062 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
1063 {
1064 }
1065
1066 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
1067 {
1068 }
1069
1070 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
1071 {
1072     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
1073     m->m_matrix = m_matrix ;
1074     return m;
1075 }
1076
1077 // concatenates the matrix
1078 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
1079 {
1080     m_matrix = CGAffineTransformConcat(*((CGAffineTransform*) t->GetNativeMatrix()), m_matrix );
1081 }
1082
1083 // sets the matrix to the respective values
1084 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1085     wxDouble tx, wxDouble ty)
1086 {
1087     m_matrix = CGAffineTransformMake((CGFloat) a,(CGFloat) b,(CGFloat) c,(CGFloat) d,(CGFloat) tx,(CGFloat) ty);
1088 }
1089
1090 // gets the component valuess of the matrix
1091 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
1092                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
1093 {
1094     if (a)  *a = m_matrix.a;
1095     if (b)  *b = m_matrix.b;
1096     if (c)  *c = m_matrix.c;
1097     if (d)  *d = m_matrix.d;
1098     if (tx) *tx= m_matrix.tx;
1099     if (ty) *ty= m_matrix.ty;
1100 }
1101
1102 // makes this the inverse matrix
1103 void wxMacCoreGraphicsMatrixData::Invert()
1104 {
1105     m_matrix = CGAffineTransformInvert( m_matrix );
1106 }
1107
1108 // returns true if the elements of the transformation matrix are equal ?
1109 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1110 {
1111     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
1112 }
1113
1114 // return true if this is the identity matrix
1115 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
1116 {
1117     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
1118         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
1119 }
1120
1121 //
1122 // transformation
1123 //
1124
1125 // add the translation to this matrix
1126 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
1127 {
1128     m_matrix = CGAffineTransformTranslate( m_matrix, (CGFloat) dx, (CGFloat) dy);
1129 }
1130
1131 // add the scale to this matrix
1132 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1133 {
1134     m_matrix = CGAffineTransformScale( m_matrix, (CGFloat) xScale, (CGFloat) yScale);
1135 }
1136
1137 // add the rotation to this matrix (radians)
1138 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
1139 {
1140     m_matrix = CGAffineTransformRotate( m_matrix, (CGFloat) angle);
1141 }
1142
1143 //
1144 // apply the transforms
1145 //
1146
1147 // applies that matrix to the point
1148 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1149 {
1150     CGPoint pt = CGPointApplyAffineTransform( CGPointMake((CGFloat) *x,(CGFloat) *y), m_matrix);
1151
1152     *x = pt.x;
1153     *y = pt.y;
1154 }
1155
1156 // applies the matrix except for translations
1157 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1158 {
1159     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake((CGFloat) *dx,(CGFloat) *dy) , m_matrix );
1160     *dx = sz.width;
1161     *dy = sz.height;
1162 }
1163
1164 // returns the native representation
1165 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
1166 {
1167     return (void*) &m_matrix;
1168 }
1169
1170 //
1171 // Graphics Path
1172 //
1173
1174 //-----------------------------------------------------------------------------
1175 // wxMacCoreGraphicsPath declaration
1176 //-----------------------------------------------------------------------------
1177
1178 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
1179 {
1180 public :
1181     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
1182
1183     ~wxMacCoreGraphicsPathData();
1184
1185     virtual wxGraphicsObjectRefData *Clone() const;
1186
1187     // begins a new subpath at (x,y)
1188     virtual void MoveToPoint( wxDouble x, wxDouble y );
1189
1190     // adds a straight line from the current point to (x,y)
1191     virtual void AddLineToPoint( wxDouble x, wxDouble y );
1192
1193     // adds a cubic Bezier curve from the current point, using two control points and an end point
1194     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
1195
1196     // closes the current sub-path
1197     virtual void CloseSubpath();
1198
1199     // gets the last point of the current path, (0,0) if not yet set
1200     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
1201
1202     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1203     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
1204
1205     //
1206     // These are convenience functions which - if not available natively will be assembled
1207     // using the primitives from above
1208     //
1209
1210     // adds a quadratic Bezier curve from the current point, using a control point and an end point
1211     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
1212
1213     // appends a rectangle as a new closed subpath
1214     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1215
1216     // appends a circle as a new closed subpath
1217     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
1218
1219     // appends an ellipsis as a new closed subpath fitting the passed rectangle
1220     virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
1221
1222     // 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)
1223     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
1224
1225     // adds another path
1226     virtual void AddPath( const wxGraphicsPathData* path );
1227
1228     // returns the native path
1229     virtual void * GetNativePath() const { return m_path; }
1230
1231     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
1232     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
1233
1234     // transforms each point of this path by the matrix
1235     virtual void Transform( const wxGraphicsMatrixData* matrix );
1236
1237     // gets the bounding box enclosing all points (possibly including control points)
1238     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
1239
1240     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
1241 private :
1242     CGMutablePathRef m_path;
1243 };
1244
1245 //-----------------------------------------------------------------------------
1246 // wxMacCoreGraphicsPath implementation
1247 //-----------------------------------------------------------------------------
1248
1249 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1250 {
1251     if ( path )
1252         m_path = path;
1253     else
1254         m_path = CGPathCreateMutable();
1255 }
1256
1257 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1258 {
1259     CGPathRelease( m_path );
1260 }
1261
1262 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1263 {
1264     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1265     return clone ;
1266 }
1267
1268
1269 // opens (starts) a new subpath
1270 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1271 {
1272     CGPathMoveToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1273 }
1274
1275 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1276 {
1277     CGPathAddLineToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1278 }
1279
1280 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1281 {
1282     CGPathAddCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) cx2, (CGFloat) cy2, (CGFloat) x , (CGFloat) y );
1283 }
1284
1285 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1286 {
1287     CGPathAddQuadCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) x , (CGFloat) y );
1288 }
1289
1290 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1291 {
1292     CGRect cgRect = { { (CGFloat) x , (CGFloat) y } , { (CGFloat) w , (CGFloat) h } };
1293     CGPathAddRect( m_path , NULL , cgRect );
1294 }
1295
1296 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1297 {
1298     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x-r,y-r,2*r,2*r));
1299 }
1300
1301 void wxMacCoreGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1302 {
1303     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x,y,w,h));
1304 }
1305
1306 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1307 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1308 {
1309     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1310     CGPathAddArc( m_path, NULL , (CGFloat) x, (CGFloat) y, (CGFloat) r, (CGFloat) startAngle, (CGFloat) endAngle, !clockwise);
1311 }
1312
1313 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1314 {
1315     CGPathAddArcToPoint( m_path, NULL , (CGFloat) x1, (CGFloat) y1, (CGFloat) x2, (CGFloat) y2, (CGFloat) r);
1316 }
1317
1318 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1319 {
1320     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1321 }
1322
1323 // closes the current subpath
1324 void wxMacCoreGraphicsPathData::CloseSubpath()
1325 {
1326     CGPathCloseSubpath( m_path );
1327 }
1328
1329 // gets the last point of the current path, (0,0) if not yet set
1330 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1331 {
1332     CGPoint p = CGPathGetCurrentPoint( m_path );
1333     *x = p.x;
1334     *y = p.y;
1335 }
1336
1337 // transforms each point of this path by the matrix
1338 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1339 {
1340     CGMutablePathRef p = CGPathCreateMutable() ;
1341     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1342     CGPathRelease( m_path );
1343     m_path = p;
1344 }
1345
1346 // gets the bounding box enclosing all points (possibly including control points)
1347 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1348 {
1349     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1350     *x = bounds.origin.x;
1351     *y = bounds.origin.y;
1352     *w = bounds.size.width;
1353     *h = bounds.size.height;
1354 }
1355
1356 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle) const
1357 {
1358     return CGPathContainsPoint( m_path, NULL, CGPointMake((CGFloat) x,(CGFloat) y), fillStyle == wxODDEVEN_RULE );
1359 }
1360
1361 //
1362 // Graphics Context
1363 //
1364
1365 //-----------------------------------------------------------------------------
1366 // wxMacCoreGraphicsContext declaration
1367 //-----------------------------------------------------------------------------
1368
1369 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1370 {
1371 public:
1372     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1373
1374 #if wxOSX_USE_CARBON
1375     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1376 #endif
1377
1378     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1379
1380     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1381
1382     ~wxMacCoreGraphicsContext();
1383
1384     void Init();
1385
1386     virtual void StartPage( wxDouble width, wxDouble height );
1387
1388     virtual void EndPage();
1389
1390     virtual void Flush();
1391
1392     // push the current state of the context, ie the transformation matrix on a stack
1393     virtual void PushState();
1394
1395     // pops a stored state from the stack
1396     virtual void PopState();
1397
1398     // clips drawings to the region
1399     virtual void Clip( const wxRegion &region );
1400
1401     // clips drawings to the rect
1402     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1403
1404     // resets the clipping to original extent
1405     virtual void ResetClip();
1406
1407     virtual void * GetNativeContext();
1408
1409     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
1410
1411     virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
1412
1413     virtual bool SetCompositionMode(wxCompositionMode op);
1414
1415     virtual void BeginLayer(wxDouble opacity);
1416
1417     virtual void EndLayer();
1418
1419     //
1420     // transformation
1421     //
1422
1423     // translate
1424     virtual void Translate( wxDouble dx , wxDouble dy );
1425
1426     // scale
1427     virtual void Scale( wxDouble xScale , wxDouble yScale );
1428
1429     // rotate (radians)
1430     virtual void Rotate( wxDouble angle );
1431
1432     // concatenates this transform with the current transform of this context
1433     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1434
1435     // sets the transform of this context
1436     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1437
1438     // gets the matrix of this context
1439     virtual wxGraphicsMatrix GetTransform() const;
1440     //
1441     // setting the paint
1442     //
1443
1444     // strokes along a path with the current pen
1445     virtual void StrokePath( const wxGraphicsPath &path );
1446
1447     // fills a path with the current brush
1448     virtual void FillPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1449
1450     // draws a path by first filling and then stroking
1451     virtual void DrawPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1452
1453     virtual bool ShouldOffset() const
1454     {
1455         if ( !m_enableOffset )
1456             return false;
1457
1458         int penwidth = 0 ;
1459         if ( !m_pen.IsNull() )
1460         {
1461             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1462             if ( penwidth == 0 )
1463                 penwidth = 1;
1464         }
1465         return ( penwidth % 2 ) == 1;
1466     }
1467     //
1468     // text
1469     //
1470
1471     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1472         wxDouble *descent, wxDouble *externalLeading ) const;
1473
1474     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1475
1476     //
1477     // image support
1478     //
1479
1480     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1481
1482     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1483
1484     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1485
1486     // fast convenience methods
1487
1488
1489     virtual void DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1490
1491     void SetNativeContext( CGContextRef cg );
1492
1493     wxDECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext);
1494
1495 private:
1496     bool EnsureIsValid();
1497     void CheckInvariants() const;
1498
1499     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
1500     virtual void DoDrawRotatedText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1501
1502     CGContextRef m_cgContext;
1503 #if wxOSX_USE_CARBON
1504     WindowRef m_windowRef;
1505 #else
1506     WXWidget m_view;
1507 #endif
1508     bool m_contextSynthesized;
1509     CGAffineTransform m_windowTransform;
1510     bool m_invisible;
1511
1512 #if wxOSX_USE_COCOA_OR_CARBON
1513     wxCFRef<HIShapeRef> m_clipRgn;
1514 #endif
1515 };
1516
1517 //-----------------------------------------------------------------------------
1518 // device context implementation
1519 //
1520 // more and more of the dc functionality should be implemented by calling
1521 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1522 // also coordinate conversions should be moved to native matrix ops
1523 //-----------------------------------------------------------------------------
1524
1525 // we always stock two context states, one at entry, to be able to preserve the
1526 // state we were called with, the other one after changing to HI Graphics orientation
1527 // (this one is used for getting back clippings etc)
1528
1529 //-----------------------------------------------------------------------------
1530 // wxMacCoreGraphicsContext implementation
1531 //-----------------------------------------------------------------------------
1532
1533 class wxQuartzOffsetHelper
1534 {
1535 public :
1536     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1537     {
1538         m_cg = cg;
1539         m_offset = offset;
1540         if ( m_offset )
1541         {
1542             m_userOffset = CGContextConvertSizeToUserSpace( m_cg, CGSizeMake( 0.5 , 0.5 ) );
1543             CGContextTranslateCTM( m_cg, m_userOffset.width , m_userOffset.height );
1544         }
1545         else
1546         {
1547             m_userOffset = CGSizeMake(0.0, 0.0);
1548         }
1549
1550     }
1551     ~wxQuartzOffsetHelper( )
1552     {
1553         if ( m_offset )
1554             CGContextTranslateCTM( m_cg, -m_userOffset.width , -m_userOffset.height );
1555     }
1556 public :
1557     CGSize m_userOffset;
1558     CGContextRef m_cg;
1559     bool m_offset;
1560 } ;
1561
1562 void wxMacCoreGraphicsContext::Init()
1563 {
1564     m_cgContext = NULL;
1565     m_contextSynthesized = false;
1566     m_width = 0;
1567     m_height = 0;
1568 #if wxOSX_USE_CARBON
1569     m_windowRef = NULL;
1570 #endif
1571 #if wxOSX_USE_COCOA_OR_IPHONE
1572     m_view = NULL;
1573 #endif
1574     m_invisible = false;
1575     m_antialias = wxANTIALIAS_DEFAULT;
1576     m_interpolation = wxINTERPOLATION_DEFAULT;
1577 }
1578
1579 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1580 {
1581     Init();
1582     SetNativeContext(cgcontext);
1583     m_width = width;
1584     m_height = height;
1585 }
1586
1587 #if wxOSX_USE_CARBON
1588 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1589 {
1590     Init();
1591     m_windowRef = window;
1592     m_enableOffset = true;
1593 }
1594 #endif
1595
1596 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1597 {
1598     Init();
1599
1600     m_enableOffset = true;
1601     wxSize sz = window->GetSize();
1602     m_width = sz.x;
1603     m_height = sz.y;
1604
1605 #if wxOSX_USE_COCOA_OR_IPHONE
1606     m_view = window->GetHandle();
1607
1608 #if wxOSX_USE_COCOA
1609     if ( ! window->GetPeer()->IsFlipped() )
1610     {
1611         m_windowTransform = CGAffineTransformMakeTranslation( 0 , m_height );
1612         m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1613     }
1614     else
1615 #endif
1616     {
1617         m_windowTransform = CGAffineTransformIdentity;
1618     }
1619 #else
1620     int originX , originY;
1621     originX = originY = 0;
1622     Rect bounds = { 0,0,0,0 };
1623     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1624     window->MacWindowToRootWindow( &originX , &originY );
1625     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1626     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1627     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1628     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1629 #endif
1630 }
1631
1632 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1633 {
1634     Init();
1635 }
1636
1637 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1638 {
1639     SetNativeContext(NULL);
1640 }
1641
1642
1643 void wxMacCoreGraphicsContext::CheckInvariants() const
1644 {
1645     // check invariants here for debugging ...
1646 }
1647
1648
1649
1650 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1651 {
1652     CGRect r;
1653     if ( width != 0 && height != 0)
1654         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) width  , (CGFloat) height );
1655     else
1656         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) m_width  , (CGFloat) m_height );
1657
1658     CGContextBeginPage(m_cgContext,  &r );
1659 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1660 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1661 }
1662
1663 void wxMacCoreGraphicsContext::EndPage()
1664 {
1665     CGContextEndPage(m_cgContext);
1666 }
1667
1668 void wxMacCoreGraphicsContext::Flush()
1669 {
1670     CGContextFlush(m_cgContext);
1671 }
1672
1673 bool wxMacCoreGraphicsContext::EnsureIsValid()
1674 {
1675     CheckInvariants();
1676
1677     if ( !m_cgContext )
1678     {
1679         if (m_invisible)
1680             return false;
1681
1682 #if wxOSX_USE_COCOA
1683         if ( wxOSXLockFocus(m_view) )
1684         {
1685             m_cgContext = wxOSXGetContextFromCurrentContext();
1686             wxASSERT_MSG( m_cgContext != NULL, wxT("Unable to retrieve drawing context from View"));
1687         }
1688         else
1689         {
1690             m_invisible = true;
1691         }
1692 #endif
1693 #if wxOSX_USE_IPHONE
1694         m_cgContext = wxOSXGetContextFromCurrentContext();
1695         if ( m_cgContext == NULL )
1696         {
1697             m_invisible = true;
1698         }
1699 #endif
1700 #if wxOSX_USE_CARBON
1701         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1702         if ( status != noErr )
1703         {
1704             wxFAIL_MSG("Cannot nest wxDCs on the same window");
1705         }
1706 #endif
1707         if ( m_cgContext )
1708         {
1709             CGContextSaveGState( m_cgContext );
1710 #if wxOSX_USE_COCOA_OR_CARBON
1711             if ( m_clipRgn.get() )
1712             {
1713                 wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
1714                 // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1715                 if ( HIShapeIsEmpty(hishape))
1716                 {
1717                     CGRect empty = CGRectMake( 0,0,0,0 );
1718                     CGContextClipToRect( m_cgContext, empty );
1719                 }
1720                 else
1721                 {
1722                     HIShapeReplacePathInCGContext( hishape, m_cgContext );
1723                     CGContextClip( m_cgContext );
1724                 }
1725             }
1726 #endif
1727             CGContextConcatCTM( m_cgContext, m_windowTransform );
1728             CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
1729             m_contextSynthesized = true;
1730             CGContextSaveGState( m_cgContext );
1731
1732 #if 0 // turn on for debugging of clientdc
1733             static float color = 0.5 ;
1734             static int channel = 0 ;
1735             CGRect bounds = CGRectMake(-1000,-1000,2000,2000);
1736             CGContextSetRGBFillColor( m_cgContext, channel == 0 ? color : 0.5 ,
1737                 channel == 1 ? color : 0.5 , channel == 2 ? color : 0.5 , 1 );
1738             CGContextFillRect( m_cgContext, bounds );
1739             color += 0.1 ;
1740             if ( color > 0.9 )
1741             {
1742                 color = 0.5 ;
1743                 channel++ ;
1744                 if ( channel == 3 )
1745                     channel = 0 ;
1746             }
1747 #endif
1748         }
1749     }
1750     CheckInvariants();
1751
1752     return m_cgContext != NULL;
1753 }
1754
1755 bool wxMacCoreGraphicsContext::SetAntialiasMode(wxAntialiasMode antialias)
1756 {
1757     if (!EnsureIsValid())
1758         return true;
1759
1760     if (m_antialias == antialias)
1761         return true;
1762
1763     m_antialias = antialias;
1764
1765     bool antialiasMode;
1766     switch (antialias)
1767     {
1768         case wxANTIALIAS_DEFAULT:
1769             antialiasMode = true;
1770             break;
1771         case wxANTIALIAS_NONE:
1772             antialiasMode = false;
1773             break;
1774         default:
1775             return false;
1776     }
1777     CGContextSetShouldAntialias(m_cgContext, antialiasMode);
1778     CheckInvariants();
1779     return true;
1780 }
1781
1782 bool wxMacCoreGraphicsContext::SetInterpolationQuality(wxInterpolationQuality interpolation)
1783 {
1784     if (!EnsureIsValid())
1785         return true;
1786
1787     if (m_interpolation == interpolation)
1788         return true;
1789
1790     m_interpolation = interpolation;
1791     CGInterpolationQuality quality;
1792
1793     switch (interpolation)
1794     {
1795         case wxINTERPOLATION_DEFAULT:
1796             quality = kCGInterpolationDefault;
1797             break;
1798         case wxINTERPOLATION_NONE:
1799             quality = kCGInterpolationNone;
1800             break;
1801         case wxINTERPOLATION_FAST:
1802             quality = kCGInterpolationLow;
1803             break;
1804         case wxINTERPOLATION_GOOD:
1805 #if wxOSX_USE_COCOA_OR_CARBON
1806             quality = UMAGetSystemVersion() < 0x1060 ? kCGInterpolationHigh : (CGInterpolationQuality) 4 /*kCGInterpolationMedium only on 10.6*/;
1807 #else
1808             quality = kCGInterpolationMedium;
1809 #endif
1810             break;
1811         case wxINTERPOLATION_BEST:
1812             quality = kCGInterpolationHigh;
1813             break;
1814         default:
1815             return false;
1816     }
1817     CGContextSetInterpolationQuality(m_cgContext, quality);
1818     CheckInvariants();
1819     return true;
1820 }
1821
1822 bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
1823 {
1824     if (!EnsureIsValid())
1825         return true;
1826
1827     if ( m_composition == op )
1828         return true;
1829
1830     m_composition = op;
1831
1832     if (m_composition == wxCOMPOSITION_DEST)
1833         return true;
1834
1835     // TODO REMOVE if we don't need it because of bugs in 10.5
1836 #if 0
1837     {
1838         CGCompositeOperation cop = kCGCompositeOperationSourceOver;
1839         CGBlendMode mode = kCGBlendModeNormal;
1840         switch( op )
1841         {
1842         case wxCOMPOSITION_CLEAR:
1843             cop = kCGCompositeOperationClear;
1844             break;
1845         case wxCOMPOSITION_SOURCE:
1846             cop = kCGCompositeOperationCopy;
1847             break;
1848         case wxCOMPOSITION_OVER:
1849             mode = kCGBlendModeNormal;
1850             break;
1851         case wxCOMPOSITION_IN:
1852             cop = kCGCompositeOperationSourceIn;
1853             break;
1854         case wxCOMPOSITION_OUT:
1855             cop = kCGCompositeOperationSourceOut;
1856             break;
1857         case wxCOMPOSITION_ATOP:
1858             cop = kCGCompositeOperationSourceAtop;
1859             break;
1860         case wxCOMPOSITION_DEST_OVER:
1861             cop = kCGCompositeOperationDestinationOver;
1862             break;
1863         case wxCOMPOSITION_DEST_IN:
1864             cop = kCGCompositeOperationDestinationIn;
1865             break;
1866         case wxCOMPOSITION_DEST_OUT:
1867             cop = kCGCompositeOperationDestinationOut;
1868             break;
1869         case wxCOMPOSITION_DEST_ATOP:
1870            cop = kCGCompositeOperationDestinationAtop;
1871             break;
1872         case wxCOMPOSITION_XOR:
1873             cop = kCGCompositeOperationXOR;
1874             break;
1875         case wxCOMPOSITION_ADD:
1876             mode = kCGBlendModePlusLighter ;
1877             break;
1878         default:
1879             return false;
1880         }
1881         if ( cop != kCGCompositeOperationSourceOver )
1882             CGContextSetCompositeOperation(m_cgContext, cop);
1883         else
1884             CGContextSetBlendMode(m_cgContext, mode);
1885     }
1886 #endif
1887     {
1888         CGBlendMode mode = kCGBlendModeNormal;
1889         switch( op )
1890         {
1891         case wxCOMPOSITION_CLEAR:
1892             mode = kCGBlendModeClear;
1893             break;
1894         case wxCOMPOSITION_SOURCE:
1895             mode = kCGBlendModeCopy;
1896             break;
1897         case wxCOMPOSITION_OVER:
1898             mode = kCGBlendModeNormal;
1899             break;
1900         case wxCOMPOSITION_IN:
1901             mode = kCGBlendModeSourceIn;
1902             break;
1903         case wxCOMPOSITION_OUT:
1904             mode = kCGBlendModeSourceOut;
1905             break;
1906         case wxCOMPOSITION_ATOP:
1907             mode = kCGBlendModeSourceAtop;
1908             break;
1909         case wxCOMPOSITION_DEST_OVER:
1910             mode = kCGBlendModeDestinationOver;
1911             break;
1912         case wxCOMPOSITION_DEST_IN:
1913             mode = kCGBlendModeDestinationIn;
1914             break;
1915         case wxCOMPOSITION_DEST_OUT:
1916             mode = kCGBlendModeDestinationOut;
1917             break;
1918         case wxCOMPOSITION_DEST_ATOP:
1919            mode = kCGBlendModeDestinationAtop;
1920             break;
1921         case wxCOMPOSITION_XOR:
1922             mode = kCGBlendModeExclusion; // Not kCGBlendModeXOR!
1923             break;
1924
1925         case wxCOMPOSITION_ADD:
1926             mode = kCGBlendModePlusLighter ;
1927             break;
1928         default:
1929             return false;
1930         }
1931         CGContextSetBlendMode(m_cgContext, mode);
1932     }
1933
1934     CheckInvariants();
1935     return true;
1936 }
1937
1938 void wxMacCoreGraphicsContext::BeginLayer(wxDouble opacity)
1939 {
1940     CheckInvariants();
1941     CGContextSaveGState(m_cgContext);
1942     CGContextSetAlpha(m_cgContext, (CGFloat) opacity);
1943     CGContextBeginTransparencyLayer(m_cgContext, 0);
1944     CheckInvariants();
1945 }
1946
1947 void wxMacCoreGraphicsContext::EndLayer()
1948 {
1949     CheckInvariants();
1950     CGContextEndTransparencyLayer(m_cgContext);
1951     CGContextRestoreGState(m_cgContext);
1952     CheckInvariants();
1953 }
1954
1955 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1956 {
1957     CheckInvariants();
1958 #if wxOSX_USE_COCOA_OR_CARBON
1959     if( m_cgContext )
1960     {
1961         wxCFRef<HIShapeRef> shape = wxCFRefFromGet(region.GetWXHRGN());
1962         // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1963         if ( HIShapeIsEmpty(shape))
1964         {
1965             CGRect empty = CGRectMake( 0,0,0,0 );
1966             CGContextClipToRect( m_cgContext, empty );
1967         }
1968         else
1969         {
1970             HIShapeReplacePathInCGContext( shape, m_cgContext );
1971             CGContextClip( m_cgContext );
1972         }
1973     }
1974     else
1975     {
1976         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1977         // to regions we try at least to have correct translations
1978         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
1979
1980         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1981         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1982         m_clipRgn.reset(mutableShape);
1983     }
1984 #else
1985     // allow usage as measuring context
1986     // wxASSERT_MSG( m_cgContext != NULL, "Needs a valid context for clipping" );
1987 #endif
1988     CheckInvariants();
1989 }
1990
1991 // clips drawings to the rect
1992 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1993 {
1994     CheckInvariants();
1995     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
1996     if ( m_cgContext )
1997     {
1998         CGContextClipToRect( m_cgContext, r );
1999     }
2000     else
2001     {
2002 #if wxOSX_USE_COCOA_OR_CARBON
2003         // the clipping itself must be stored as device coordinates, otherwise
2004         // we cannot apply it back correctly
2005         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
2006         r.size= CGSizeApplyAffineTransform(r.size, m_windowTransform);
2007         m_clipRgn.reset(HIShapeCreateWithRect(&r));
2008 #else
2009     // allow usage as measuring context
2010     // wxFAIL_MSG( "Needs a valid context for clipping" );
2011 #endif
2012     }
2013     CheckInvariants();
2014 }
2015
2016     // resets the clipping to original extent
2017 void wxMacCoreGraphicsContext::ResetClip()
2018 {
2019     if ( m_cgContext )
2020     {
2021         // there is no way for clearing the clip, we can only revert to the stored
2022         // state, but then we have to make sure everything else is NOT restored
2023         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2024         CGContextRestoreGState( m_cgContext );
2025         CGContextSaveGState( m_cgContext );
2026         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
2027         transformNew = CGAffineTransformInvert( transformNew ) ;
2028         CGContextConcatCTM( m_cgContext, transformNew);
2029         CGContextConcatCTM( m_cgContext, transform);
2030     }
2031     else
2032     {
2033 #if wxOSX_USE_COCOA_OR_CARBON
2034         m_clipRgn.reset();
2035 #else
2036     // allow usage as measuring context
2037     // wxFAIL_MSG( "Needs a valid context for clipping" );
2038 #endif
2039     }
2040     CheckInvariants();
2041 }
2042
2043 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
2044 {
2045     if ( m_pen.IsNull() )
2046         return ;
2047
2048     if (!EnsureIsValid())
2049         return;
2050
2051     if (m_composition == wxCOMPOSITION_DEST)
2052         return;
2053
2054     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2055
2056     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2057     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2058     CGContextStrokePath( m_cgContext );
2059
2060     CheckInvariants();
2061 }
2062
2063 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2064 {
2065     if (!EnsureIsValid())
2066         return;
2067
2068     if (m_composition == wxCOMPOSITION_DEST)
2069         return;
2070
2071     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2072     {
2073         // when using shading, we cannot draw pen and brush at the same time
2074         // revert to the base implementation of first filling and then stroking
2075         wxGraphicsContext::DrawPath( path, fillStyle );
2076         return;
2077     }
2078
2079     CGPathDrawingMode mode = kCGPathFill ;
2080     if ( m_brush.IsNull() )
2081     {
2082         if ( m_pen.IsNull() )
2083             return;
2084         else
2085             mode = kCGPathStroke;
2086     }
2087     else
2088     {
2089         if ( m_pen.IsNull() )
2090         {
2091             if ( fillStyle == wxODDEVEN_RULE )
2092                 mode = kCGPathEOFill;
2093             else
2094                 mode = kCGPathFill;
2095         }
2096         else
2097         {
2098             if ( fillStyle == wxODDEVEN_RULE )
2099                 mode = kCGPathEOFillStroke;
2100             else
2101                 mode = kCGPathFillStroke;
2102         }
2103     }
2104
2105     if ( !m_brush.IsNull() )
2106         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2107     if ( !m_pen.IsNull() )
2108         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2109
2110     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2111
2112     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2113     CGContextDrawPath( m_cgContext , mode );
2114
2115     CheckInvariants();
2116 }
2117
2118 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2119 {
2120     if ( m_brush.IsNull() )
2121         return;
2122
2123     if (!EnsureIsValid())
2124         return;
2125
2126     if (m_composition == wxCOMPOSITION_DEST)
2127         return;
2128
2129     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2130     {
2131         CGContextSaveGState( m_cgContext );
2132         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2133         CGContextClip( m_cgContext );
2134         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2135         CGContextRestoreGState( m_cgContext);
2136     }
2137     else
2138     {
2139         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2140         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2141         if ( fillStyle == wxODDEVEN_RULE )
2142             CGContextEOFillPath( m_cgContext );
2143         else
2144             CGContextFillPath( m_cgContext );
2145     }
2146
2147     CheckInvariants();
2148 }
2149
2150 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
2151 {
2152     // we allow either setting or clearing but not replacing
2153     wxASSERT( m_cgContext == NULL || cg == NULL );
2154
2155     if ( m_cgContext )
2156     {
2157         CheckInvariants();
2158         CGContextRestoreGState( m_cgContext );
2159         CGContextRestoreGState( m_cgContext );
2160         if ( m_contextSynthesized )
2161         {
2162 #if wxOSX_USE_CARBON
2163             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
2164 #endif
2165 #if wxOSX_USE_COCOA
2166             wxOSXUnlockFocus(m_view);
2167 #endif
2168         }
2169         else
2170             CGContextRelease(m_cgContext);
2171     }
2172
2173     m_cgContext = cg;
2174
2175     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
2176     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
2177     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
2178     // for this one operation.
2179
2180     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
2181     // can be removed.
2182     if (m_cgContext)
2183     {
2184         CGContextRetain(m_cgContext);
2185         CGContextSaveGState( m_cgContext );
2186         CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
2187         CGContextSaveGState( m_cgContext );
2188         m_contextSynthesized = false;
2189     }
2190 }
2191
2192 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
2193 {
2194     if ( m_cgContext )
2195         CGContextTranslateCTM( m_cgContext, (CGFloat) dx, (CGFloat) dy );
2196     else
2197         m_windowTransform = CGAffineTransformTranslate(m_windowTransform, (CGFloat) dx, (CGFloat) dy);
2198 }
2199
2200 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
2201 {
2202     if ( m_cgContext )
2203         CGContextScaleCTM( m_cgContext , (CGFloat) xScale , (CGFloat) yScale );
2204     else
2205         m_windowTransform = CGAffineTransformScale(m_windowTransform, (CGFloat) xScale, (CGFloat) yScale);
2206 }
2207
2208 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
2209 {
2210     if ( m_cgContext )
2211         CGContextRotateCTM( m_cgContext , (CGFloat) angle );
2212     else
2213         m_windowTransform = CGAffineTransformRotate(m_windowTransform, (CGFloat) angle);
2214 }
2215
2216 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2217 {
2218     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
2219     DrawBitmap(bitmap, x, y, w, h);
2220 }
2221
2222 void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2223 {
2224     if (!EnsureIsValid())
2225         return;
2226
2227     if (m_composition == wxCOMPOSITION_DEST)
2228         return;
2229
2230 #ifdef __WXMAC__
2231     wxMacCoreGraphicsBitmapData* refdata = static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
2232     CGImageRef image = refdata->GetBitmap();
2233     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2234     if ( refdata->IsMonochrome() == 1 )
2235     {
2236         // is a mask, the '1' in the mask tell where to draw the current brush
2237         if (  !m_brush.IsNull() )
2238         {
2239             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2240             {
2241                 // TODO clip to mask
2242             /*
2243                 CGContextSaveGState( m_cgContext );
2244                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2245                 CGContextClip( m_cgContext );
2246                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2247                 CGContextRestoreGState( m_cgContext);
2248             */
2249             }
2250             else
2251             {
2252                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2253                 wxMacDrawCGImage( m_cgContext , &r , image );
2254             }
2255         }
2256     }
2257     else
2258     {
2259         wxMacDrawCGImage( m_cgContext , &r , image );
2260     }
2261 #endif
2262
2263     CheckInvariants();
2264 }
2265
2266 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2267 {
2268     if (!EnsureIsValid())
2269         return;
2270
2271     if (m_composition == wxCOMPOSITION_DEST)
2272         return;
2273
2274     CGContextSaveGState( m_cgContext );
2275     CGContextTranslateCTM( m_cgContext,(CGFloat) x ,(CGFloat) (y + h) );
2276     CGContextScaleCTM( m_cgContext, 1, -1 );
2277 #if wxOSX_USE_COCOA_OR_CARBON
2278     CGRect r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) w , (CGFloat) h );
2279     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
2280         NULL , kPlotIconRefNormalFlags , icon.GetHICON() );
2281 #endif
2282     CGContextRestoreGState( m_cgContext );
2283
2284     CheckInvariants();
2285 }
2286
2287 void wxMacCoreGraphicsContext::PushState()
2288 {
2289     if (!EnsureIsValid())
2290         return;
2291
2292     CGContextSaveGState( m_cgContext );
2293 }
2294
2295 void wxMacCoreGraphicsContext::PopState()
2296 {
2297     if (!EnsureIsValid())
2298         return;
2299
2300     CGContextRestoreGState( m_cgContext );
2301 }
2302
2303 void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDouble y )
2304 {
2305     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2306
2307     if (!EnsureIsValid())
2308         return;
2309
2310     if (m_composition == wxCOMPOSITION_DEST)
2311         return;
2312
2313 #if wxOSX_USE_CORE_TEXT
2314     {
2315         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2316         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2317         CTFontRef font = fref->OSXGetCTFont();
2318         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2319 #if 0
2320         // right now there's no way to get continuous underlines, only words, so we emulate it
2321         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
2322         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
2323          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
2324         CFTypeRef values[] = { font, col, underlined };
2325 #else
2326         CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName };
2327         CFTypeRef values[] = { font, col };
2328 #endif
2329         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2330                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2331         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2332         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2333
2334         y += CTFontGetAscent(font);
2335
2336         CGContextSaveGState(m_cgContext);
2337         CGAffineTransform textMatrix = CGContextGetTextMatrix(m_cgContext);
2338
2339         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2340         CGContextScaleCTM(m_cgContext, 1, -1);
2341         CGContextSetTextMatrix(m_cgContext, CGAffineTransformIdentity);
2342
2343         CTLineDraw( line, m_cgContext );
2344
2345         if ( fref->GetUnderlined() ) {
2346             //AKT: draw horizontal line 1 pixel thick and with 1 pixel gap under baseline
2347             CGFloat width = CTLineGetTypographicBounds(line, NULL, NULL, NULL);
2348
2349             CGPoint points[] = { {0.0, -2.0},  {width, -2.0} };
2350
2351             CGContextSetStrokeColorWithColor(m_cgContext, col);
2352             CGContextSetShouldAntialias(m_cgContext, false);
2353             CGContextSetLineWidth(m_cgContext, 1.0);
2354             CGContextStrokeLineSegments(m_cgContext, points, 2);
2355         }
2356
2357         CGContextRestoreGState(m_cgContext);
2358         CGContextSetTextMatrix(m_cgContext, textMatrix);
2359         CGColorRelease( col );
2360         CheckInvariants();
2361         return;
2362     }
2363 #endif
2364 #if wxOSX_USE_ATSU_TEXT
2365     {
2366         DrawText(str, x, y, 0.0);
2367         return;
2368     }
2369 #endif
2370 #if wxOSX_USE_IPHONE
2371     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2372
2373     CGContextSaveGState(m_cgContext);
2374
2375     CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2376     CGContextSetTextDrawingMode (m_cgContext, kCGTextFill);
2377     CGContextSetFillColorWithColor( m_cgContext, col );
2378
2379     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2380     DrawTextInContext( m_cgContext, CGPointMake( x, y ), fref->GetUIFont() , text.AsNSString() );
2381
2382     CGContextRestoreGState(m_cgContext);
2383     CFRelease( col );
2384 #endif
2385
2386     CheckInvariants();
2387 }
2388
2389 void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
2390                                                  wxDouble x, wxDouble y,
2391                                                  wxDouble angle)
2392 {
2393     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2394
2395     if (!EnsureIsValid())
2396         return;
2397
2398     if (m_composition == wxCOMPOSITION_DEST)
2399         return;
2400
2401 #if wxOSX_USE_CORE_TEXT
2402     {
2403         // default implementation takes care of rotation and calls non rotated DrawText afterwards
2404         wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2405         return;
2406     }
2407 #endif
2408 #if wxOSX_USE_ATSU_TEXT
2409     {
2410         OSStatus status = noErr;
2411         ATSUTextLayout atsuLayout;
2412         wxMacUniCharBuffer unibuf( str );
2413         UniCharCount chars = unibuf.GetChars();
2414
2415         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2416         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2417                                                    &chars , &style , &atsuLayout );
2418
2419         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
2420
2421         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2422         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2423
2424         int iAngle = int( angle * RAD2DEG );
2425         if ( abs(iAngle) > 0 )
2426         {
2427             Fixed atsuAngle = IntToFixed( iAngle );
2428             ATSUAttributeTag atsuTags[] =
2429             {
2430                 kATSULineRotationTag ,
2431             };
2432             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2433             {
2434                 sizeof( Fixed ) ,
2435             };
2436             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2437             {
2438                 &atsuAngle ,
2439             };
2440             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2441                                              atsuTags, atsuSizes, atsuValues );
2442         }
2443
2444         {
2445             ATSUAttributeTag atsuTags[] =
2446             {
2447                 kATSUCGContextTag ,
2448             };
2449             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2450             {
2451                 sizeof( CGContextRef ) ,
2452             };
2453             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2454             {
2455                 &m_cgContext ,
2456             };
2457             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2458                                              atsuTags, atsuSizes, atsuValues );
2459         }
2460
2461         ATSUTextMeasurement textBefore, textAfter;
2462         ATSUTextMeasurement ascent, descent;
2463
2464         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2465                                             &textBefore , &textAfter, &ascent , &descent );
2466
2467         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2468
2469         Rect rect;
2470         x += (int)(sin(angle) * FixedToFloat(ascent));
2471         y += (int)(cos(angle) * FixedToFloat(ascent));
2472
2473         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2474                                         IntToFixed(x) , IntToFixed(y) , &rect );
2475         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2476
2477         CGContextSaveGState(m_cgContext);
2478         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2479         CGContextScaleCTM(m_cgContext, 1, -1);
2480         status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2481                                 IntToFixed(0) , IntToFixed(0) );
2482
2483         wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
2484
2485         CGContextRestoreGState(m_cgContext);
2486
2487         ::ATSUDisposeTextLayout(atsuLayout);
2488         CheckInvariants();
2489
2490         return;
2491     }
2492 #endif
2493 #if wxOSX_USE_IPHONE
2494     // default implementation takes care of rotation and calls non rotated DrawText afterwards
2495     wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2496 #endif
2497
2498     CheckInvariants();
2499 }
2500
2501 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2502                             wxDouble *descent, wxDouble *externalLeading ) const
2503 {
2504     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::GetTextExtent - no valid font set") );
2505
2506     if ( width )
2507         *width = 0;
2508     if ( height )
2509         *height = 0;
2510     if ( descent )
2511         *descent = 0;
2512     if ( externalLeading )
2513         *externalLeading = 0;
2514
2515     if (str.empty())
2516         return;
2517
2518 #if wxOSX_USE_CORE_TEXT
2519     {
2520         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2521         CTFontRef font = fref->OSXGetCTFont();
2522
2523         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2524         CFStringRef keys[] = { kCTFontAttributeName  };
2525         CFTypeRef values[] = { font };
2526         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2527                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2528         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2529         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2530
2531         CGFloat a, d, l, w;
2532         w = CTLineGetTypographicBounds(line, &a, &d, &l);
2533
2534         if ( height )
2535             *height = a+d+l;
2536         if ( descent )
2537             *descent = d;
2538         if ( externalLeading )
2539             *externalLeading = l;
2540         if ( width )
2541             *width = w;
2542         return;
2543     }
2544 #endif
2545 #if wxOSX_USE_ATSU_TEXT
2546     {
2547         OSStatus status = noErr;
2548
2549         ATSUTextLayout atsuLayout;
2550         wxMacUniCharBuffer unibuf( str );
2551         UniCharCount chars = unibuf.GetChars();
2552
2553         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2554         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2555                                                    &chars , &style , &atsuLayout );
2556
2557         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2558
2559         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2560         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2561
2562         ATSUTextMeasurement textBefore, textAfter;
2563         ATSUTextMeasurement textAscent, textDescent;
2564
2565         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2566                                             &textBefore , &textAfter, &textAscent , &textDescent );
2567
2568         if ( height )
2569             *height = FixedToFloat(textAscent + textDescent);
2570         if ( descent )
2571             *descent = FixedToFloat(textDescent);
2572         if ( externalLeading )
2573             *externalLeading = 0;
2574         if ( width )
2575             *width = FixedToFloat(textAfter - textBefore);
2576
2577         ::ATSUDisposeTextLayout(atsuLayout);
2578
2579         return;
2580     }
2581 #endif
2582 #if wxOSX_USE_IPHONE
2583     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2584
2585     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2586     CGSize sz = MeasureTextInContext( fref->GetUIFont() , text.AsNSString() );
2587
2588     if ( height )
2589         *height = sz.height;
2590         /*
2591     if ( descent )
2592         *descent = FixedToFloat(textDescent);
2593     if ( externalLeading )
2594         *externalLeading = 0;
2595         */
2596     if ( width )
2597         *width = sz.width;
2598 #endif
2599
2600     CheckInvariants();
2601 }
2602
2603 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2604 {
2605     widths.Empty();
2606     widths.Add(0, text.length());
2607
2608     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2609
2610     if (text.empty())
2611         return;
2612
2613 #if wxOSX_USE_CORE_TEXT
2614     {
2615         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2616         CTFontRef font = fref->OSXGetCTFont();
2617
2618         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
2619         CFStringRef keys[] = { kCTFontAttributeName  };
2620         CFTypeRef values[] = { font };
2621         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2622                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2623         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, t, attributes) );
2624         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2625
2626         int chars = text.length();
2627         for ( int pos = 0; pos < (int)chars; pos ++ )
2628         {
2629             widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL );
2630         }
2631
2632         return;
2633     }
2634 #endif
2635 #if wxOSX_USE_ATSU_TEXT
2636     {
2637         OSStatus status = noErr;
2638         ATSUTextLayout atsuLayout;
2639         wxMacUniCharBuffer unibuf( text );
2640         UniCharCount chars = unibuf.GetChars();
2641
2642         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2643         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2644                                           &chars , &style , &atsuLayout );
2645
2646         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2647
2648         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2649         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2650
2651 // new implementation from JS, keep old one just in case
2652 #if 0
2653         for ( int pos = 0; pos < (int)chars; pos ++ )
2654         {
2655             unsigned long actualNumberOfBounds = 0;
2656             ATSTrapezoid glyphBounds;
2657
2658             // We get a single bound, since the text should only require one. If it requires more, there is an issue
2659             OSStatus result;
2660             result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
2661                                         kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
2662             if (result != noErr || actualNumberOfBounds != 1 )
2663                 return;
2664
2665             widths[pos] = FixedToFloat( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
2666             //unsigned char uch = s[i];
2667         }
2668 #else
2669         ATSLayoutRecord *layoutRecords = NULL;
2670         ItemCount glyphCount = 0;
2671
2672         // Get the glyph extents
2673         OSStatus err = ::ATSUDirectGetLayoutDataArrayPtrFromTextLayout(atsuLayout,
2674                                                                        0,
2675                                                                        kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2676                                                                        (void **)
2677                                                                        &layoutRecords,
2678                                                                        &glyphCount);
2679         wxASSERT(glyphCount == (text.length()+1));
2680
2681         if ( err == noErr && glyphCount == (text.length()+1))
2682         {
2683             for ( int pos = 1; pos < (int)glyphCount ; pos ++ )
2684             {
2685                 widths[pos-1] = FixedToFloat( layoutRecords[pos].realPos );
2686             }
2687         }
2688
2689         ::ATSUDirectReleaseLayoutDataArrayPtr(NULL,
2690                                               kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2691                                               (void **) &layoutRecords);
2692 #endif
2693         ::ATSUDisposeTextLayout(atsuLayout);
2694     }
2695 #endif
2696 #if wxOSX_USE_IPHONE
2697     // TODO core graphics text implementation here
2698 #endif
2699
2700     CheckInvariants();
2701 }
2702
2703 void * wxMacCoreGraphicsContext::GetNativeContext()
2704 {
2705     return m_cgContext;
2706 }
2707
2708
2709 void wxMacCoreGraphicsContext::DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2710 {
2711     if (m_composition == wxCOMPOSITION_DEST)
2712         return;
2713
2714     CGRect rect = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2715     if ( !m_brush.IsNull() )
2716     {
2717         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2718         CGContextFillRect(m_cgContext, rect);
2719     }
2720
2721     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2722     if ( !m_pen.IsNull() )
2723     {
2724         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2725         CGContextStrokeRect(m_cgContext, rect);
2726     }
2727 }
2728
2729 // concatenates this transform with the current transform of this context
2730 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
2731 {
2732     if ( m_cgContext )
2733         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2734     else
2735         m_windowTransform = CGAffineTransformConcat(*(CGAffineTransform*) matrix.GetNativeMatrix(), m_windowTransform);
2736 }
2737
2738 // sets the transform of this context
2739 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
2740 {
2741     CheckInvariants();
2742     if ( m_cgContext )
2743     {
2744         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2745         transform = CGAffineTransformInvert( transform ) ;
2746         CGContextConcatCTM( m_cgContext, transform);
2747         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2748     }
2749     else
2750     {
2751         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
2752     }
2753     CheckInvariants();
2754 }
2755
2756 // gets the matrix of this context
2757 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
2758 {
2759     wxGraphicsMatrix m = CreateMatrix();
2760     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
2761         CGContextGetCTM( m_cgContext ));
2762     return m;
2763 }
2764
2765
2766 #if wxUSE_IMAGE
2767
2768 // ----------------------------------------------------------------------------
2769 // wxMacCoreGraphicsImageContext
2770 // ----------------------------------------------------------------------------
2771
2772 // This is a GC that can be used to draw on wxImage. In this implementation we
2773 // simply draw on a wxBitmap using wxMemoryDC and then convert it to wxImage in
2774 // the end so it's not especially interesting and exists mainly for
2775 // compatibility with the other platforms.
2776 class wxMacCoreGraphicsImageContext : public wxMacCoreGraphicsContext
2777 {
2778 public:
2779     wxMacCoreGraphicsImageContext(wxGraphicsRenderer* renderer,
2780                                   wxImage& image) :
2781         wxMacCoreGraphicsContext(renderer),
2782         m_image(image),
2783         m_bitmap(image),
2784         m_memDC(m_bitmap)
2785     {
2786         SetNativeContext
2787         (
2788             (CGContextRef)(m_memDC.GetGraphicsContext()->GetNativeContext())
2789         );
2790         m_width = image.GetWidth();
2791         m_height = image.GetHeight();
2792     }
2793
2794     virtual ~wxMacCoreGraphicsImageContext()
2795     {
2796         m_memDC.SelectObject(wxNullBitmap);
2797         m_image = m_bitmap.ConvertToImage();
2798     }
2799
2800 private:
2801     wxImage& m_image;
2802     wxBitmap m_bitmap;
2803     wxMemoryDC m_memDC;
2804 };
2805
2806 #endif // wxUSE_IMAGE
2807
2808 //
2809 // Renderer
2810 //
2811
2812 //-----------------------------------------------------------------------------
2813 // wxMacCoreGraphicsRenderer declaration
2814 //-----------------------------------------------------------------------------
2815
2816 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2817 {
2818 public :
2819     wxMacCoreGraphicsRenderer() {}
2820
2821     virtual ~wxMacCoreGraphicsRenderer() {}
2822
2823     // Context
2824
2825     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2826     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2827 #if wxUSE_PRINTING_ARCHITECTURE
2828     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
2829 #endif
2830
2831     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2832
2833     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2834
2835     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2836
2837 #if wxUSE_IMAGE
2838     virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
2839 #endif // wxUSE_IMAGE
2840
2841     virtual wxGraphicsContext * CreateMeasuringContext();
2842
2843     // Path
2844
2845     virtual wxGraphicsPath CreatePath();
2846
2847     // Matrix
2848
2849     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2850         wxDouble tx=0.0, wxDouble ty=0.0);
2851
2852
2853     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2854
2855     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2856
2857     virtual wxGraphicsBrush
2858     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2859                               wxDouble x2, wxDouble y2,
2860                               const wxGraphicsGradientStops& stops);
2861
2862     virtual wxGraphicsBrush
2863     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2864                               wxDouble xc, wxDouble yc,
2865                               wxDouble radius,
2866                               const wxGraphicsGradientStops& stops);
2867
2868    // sets the font
2869     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2870     virtual wxGraphicsFont CreateFont(double sizeInPixels,
2871                                       const wxString& facename,
2872                                       int flags = wxFONTFLAG_DEFAULT,
2873                                       const wxColour& col = *wxBLACK);
2874
2875     // create a native bitmap representation
2876     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
2877
2878 #if wxUSE_IMAGE
2879     virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
2880     virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp);
2881 #endif // wxUSE_IMAGE
2882
2883     // create a graphics bitmap from a native bitmap
2884     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
2885
2886     // create a native bitmap representation
2887     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) ;
2888 private :
2889     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2890 } ;
2891
2892 //-----------------------------------------------------------------------------
2893 // wxMacCoreGraphicsRenderer implementation
2894 //-----------------------------------------------------------------------------
2895
2896 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2897
2898 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2899
2900 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2901 {
2902     return &gs_MacCoreGraphicsRenderer;
2903 }
2904
2905 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc )
2906 {
2907     const wxDCImpl* impl = dc.GetImpl();
2908     wxWindowDCImpl *win_impl = wxDynamicCast( impl, wxWindowDCImpl );
2909     if (win_impl)
2910     {
2911         int w, h;
2912         win_impl->GetSize( &w, &h );
2913         CGContextRef cgctx = 0;
2914
2915         wxASSERT_MSG(win_impl->GetWindow(), "Invalid wxWindow in wxMacCoreGraphicsRenderer::CreateContext");
2916         if (win_impl->GetWindow())
2917             cgctx =  (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef());
2918
2919         // having a cgctx being NULL is fine (will be created on demand)
2920         // this is the case for all wxWindowDCs except wxPaintDC
2921         wxMacCoreGraphicsContext *context =
2922             new wxMacCoreGraphicsContext( this, cgctx, (wxDouble) w, (wxDouble) h );
2923         context->EnableOffset(true);
2924         return context;
2925     }
2926     return NULL;
2927 }
2928
2929 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC& dc )
2930 {
2931 #ifdef __WXMAC__
2932     const wxDCImpl* impl = dc.GetImpl();
2933     wxMemoryDCImpl *mem_impl = wxDynamicCast( impl, wxMemoryDCImpl );
2934     if (mem_impl)
2935     {
2936         int w, h;
2937         mem_impl->GetSize( &w, &h );
2938         wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext( this,
2939             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2940         context->EnableOffset(true);
2941         return context;
2942     }
2943 #endif
2944     return NULL;
2945 }
2946
2947 #if wxUSE_PRINTING_ARCHITECTURE
2948 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxPrinterDC& dc )
2949 {
2950 #ifdef __WXMAC__
2951     const wxDCImpl* impl = dc.GetImpl();
2952     wxPrinterDCImpl *print_impl = wxDynamicCast( impl, wxPrinterDCImpl );
2953     if (print_impl)
2954     {
2955         int w, h;
2956         print_impl->GetSize( &w, &h );
2957         return new wxMacCoreGraphicsContext( this,
2958             (CGContextRef)(print_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2959     }
2960 #endif
2961     return NULL;
2962 }
2963 #endif
2964
2965 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2966 {
2967     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2968 }
2969
2970 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2971 {
2972 #if wxOSX_USE_CARBON
2973     wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext(this,(WindowRef)window);
2974     context->EnableOffset(true);
2975     return context;
2976 #else
2977     wxUnusedVar(window);
2978     return NULL;
2979 #endif
2980 }
2981
2982 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2983 {
2984     return new wxMacCoreGraphicsContext(this, window );
2985 }
2986
2987 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2988 {
2989     return new wxMacCoreGraphicsContext(this);
2990 }
2991
2992 #if wxUSE_IMAGE
2993
2994 wxGraphicsContext*
2995 wxMacCoreGraphicsRenderer::CreateContextFromImage(wxImage& image)
2996 {
2997     return new wxMacCoreGraphicsImageContext(this, image);
2998 }
2999
3000 #endif // wxUSE_IMAGE
3001
3002 // Path
3003
3004 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
3005 {
3006     wxGraphicsPath m;
3007     m.SetRefData( new wxMacCoreGraphicsPathData(this));
3008     return m;
3009 }
3010
3011
3012 // Matrix
3013
3014 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
3015     wxDouble tx, wxDouble ty)
3016 {
3017     wxGraphicsMatrix m;
3018     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
3019     data->Set( a,b,c,d,tx,ty ) ;
3020     m.SetRefData(data);
3021     return m;
3022 }
3023
3024 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
3025 {
3026     if ( !pen.IsOk() || pen.GetStyle() == wxTRANSPARENT )
3027         return wxNullGraphicsPen;
3028     else
3029     {
3030         wxGraphicsPen p;
3031         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
3032         return p;
3033     }
3034 }
3035
3036 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
3037 {
3038     if ( !brush.IsOk() || brush.GetStyle() == wxTRANSPARENT )
3039         return wxNullGraphicsBrush;
3040     else
3041     {
3042         wxGraphicsBrush p;
3043         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
3044         return p;
3045     }
3046 }
3047
3048 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
3049 {
3050     if ( bmp.IsOk() )
3051     {
3052         wxGraphicsBitmap p;
3053         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );
3054         return p;
3055     }
3056     else
3057         return wxNullGraphicsBitmap;
3058 }
3059
3060 #if wxUSE_IMAGE
3061
3062 wxGraphicsBitmap
3063 wxMacCoreGraphicsRenderer::CreateBitmapFromImage(const wxImage& image)
3064 {
3065     // We don't have any direct way to convert wxImage to CGImage so pass by
3066     // wxBitmap. This makes this function pretty useless in this implementation
3067     // but it allows to have the same API as with Cairo backend where we can
3068     // convert wxImage to a Cairo surface directly, bypassing wxBitmap.
3069     return CreateBitmap(wxBitmap(image));
3070 }
3071
3072 wxImage wxMacCoreGraphicsRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
3073 {
3074     wxMacCoreGraphicsBitmapData* const
3075         data = static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
3076
3077     return data ? data->ConvertToImage() : wxNullImage;
3078 }
3079
3080 #endif // wxUSE_IMAGE
3081
3082 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
3083 {
3084     if ( bitmap != NULL )
3085     {
3086         wxGraphicsBitmap p;
3087         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , (CGImageRef) bitmap, false ));
3088         return p;
3089     }
3090     else
3091         return wxNullGraphicsBitmap;
3092 }
3093
3094 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h  )
3095 {
3096     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
3097     CGImageRef img = refdata->GetBitmap();
3098     if ( img )
3099     {
3100         wxGraphicsBitmap p;
3101         CGImageRef subimg = CGImageCreateWithImageInRect(img,CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h ));
3102         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , subimg, refdata->IsMonochrome() ) );
3103         return p;
3104     }
3105     else
3106         return wxNullGraphicsBitmap;
3107 }
3108
3109 wxGraphicsBrush
3110 wxMacCoreGraphicsRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
3111                                                      wxDouble x2, wxDouble y2,
3112                                                      const wxGraphicsGradientStops& stops)
3113 {
3114     wxGraphicsBrush p;
3115     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
3116     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
3117     p.SetRefData(d);
3118     return p;
3119 }
3120
3121 wxGraphicsBrush
3122 wxMacCoreGraphicsRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
3123                                                      wxDouble xc, wxDouble yc,
3124                                                      wxDouble radius,
3125                                                      const wxGraphicsGradientStops& stops)
3126 {
3127     wxGraphicsBrush p;
3128     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
3129     d->CreateRadialGradientBrush(xo, yo, xc, yc, radius, stops);
3130     p.SetRefData(d);
3131     return p;
3132 }
3133
3134 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
3135 {
3136     if ( font.IsOk() )
3137     {
3138         wxGraphicsFont p;
3139         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
3140         return p;
3141     }
3142     else
3143         return wxNullGraphicsFont;
3144 }
3145
3146 wxGraphicsFont
3147 wxMacCoreGraphicsRenderer::CreateFont(double sizeInPixels,
3148                                       const wxString& facename,
3149                                       int flags,
3150                                       const wxColour& col)
3151 {
3152     // This implementation is not ideal as we don't support fractional font
3153     // sizes right now, but it's the simplest one.
3154     //
3155     // Notice that under Mac we always use 72 DPI so the font size in pixels is
3156     // the same as the font size in points and we can pass it directly to wxFont
3157     // ctor.
3158     wxFont font(wxRound(sizeInPixels),
3159                 wxFONTFAMILY_DEFAULT,
3160                 flags & wxFONTFLAG_ITALIC ? wxFONTSTYLE_ITALIC
3161                                           : wxFONTSTYLE_NORMAL,
3162                 flags & wxFONTFLAG_BOLD ? wxFONTWEIGHT_BOLD
3163                                         : wxFONTWEIGHT_NORMAL,
3164                 (flags & wxFONTFLAG_UNDERLINED) != 0,
3165                 facename);
3166
3167     wxGraphicsFont f;
3168     f.SetRefData(new wxMacCoreGraphicsFontData(this, font, col));
3169     return f;
3170 }
3171
3172 //
3173 // CoreGraphics Helper Methods
3174 //
3175
3176 // Data Providers and Consumers
3177
3178 size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
3179 {
3180     CFMutableDataRef data = (CFMutableDataRef) info;
3181     if ( data )
3182     {
3183         CFDataAppendBytes( data, (const UInt8*) bytes, count );
3184     }
3185     return count;
3186 }
3187
3188 void wxMacReleaseCFDataProviderCallback(void *info,
3189                                       const void *WXUNUSED(data),
3190                                       size_t WXUNUSED(count))
3191 {
3192     if ( info )
3193         CFRelease( (CFDataRef) info );
3194 }
3195
3196 void wxMacReleaseCFDataConsumerCallback( void *info )
3197 {
3198     if ( info )
3199         CFRelease( (CFDataRef) info );
3200 }
3201
3202 CGDataProviderRef wxMacCGDataProviderCreateWithCFData( CFDataRef data )
3203 {
3204     if ( data == NULL )
3205         return NULL;
3206
3207     return CGDataProviderCreateWithCFData( data );
3208 }
3209
3210 CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data )
3211 {
3212     if ( data == NULL )
3213         return NULL;
3214
3215     return CGDataConsumerCreateWithCFData( data );
3216 }
3217
3218 void
3219 wxMacReleaseMemoryBufferProviderCallback(void *info,
3220                                          const void * WXUNUSED_UNLESS_DEBUG(data),
3221                                          size_t WXUNUSED(size))
3222 {
3223     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
3224
3225     wxASSERT( data == membuf->GetData() ) ;
3226
3227     delete membuf ;
3228 }
3229
3230 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf )
3231 {
3232     wxMemoryBuffer* b = new wxMemoryBuffer( buf );
3233     if ( b->GetDataLen() == 0 )
3234         return NULL;
3235
3236     return CGDataProviderCreateWithData( b , (const void *) b->GetData() , b->GetDataLen() ,
3237                                                  wxMacReleaseMemoryBufferProviderCallback );
3238 }