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