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 private :
 982     CGImageRef m_bitmap;
 983     bool m_monochrome;
 984 };
 985
 986 wxMacCoreGraphicsBitmapData::wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome ) : wxGraphicsObjectRefData( renderer ),
 987     m_bitmap(bitmap), m_monochrome(monochrome)
 988 {
 989 }
 990
 991 wxMacCoreGraphicsBitmapData::~wxMacCoreGraphicsBitmapData()
 992 {
 993     CGImageRelease( m_bitmap );
 994 }
 995
 996 //
 997 // Graphics Matrix
 998 //
 999
1000 //-----------------------------------------------------------------------------
1001 // wxMacCoreGraphicsMatrix declaration
1002 //-----------------------------------------------------------------------------
1003
1004 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
1005 {
1006 public :
1007     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
1008
1009     virtual ~wxMacCoreGraphicsMatrixData() ;
1010
1011     virtual wxGraphicsObjectRefData *Clone() const ;
1012
1013     // concatenates the matrix
1014     virtual void Concat( const wxGraphicsMatrixData *t );
1015
1016     // sets the matrix to the respective values
1017     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1018         wxDouble tx=0.0, wxDouble ty=0.0);
1019
1020     // gets the component valuess of the matrix
1021     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
1022                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
1023
1024     // makes this the inverse matrix
1025     virtual void Invert();
1026
1027     // returns true if the elements of the transformation matrix are equal ?
1028     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
1029
1030     // return true if this is the identity matrix
1031     virtual bool IsIdentity() const;
1032
1033     //
1034     // transformation
1035     //
1036
1037     // add the translation to this matrix
1038     virtual void Translate( wxDouble dx , wxDouble dy );
1039
1040     // add the scale to this matrix
1041     virtual void Scale( wxDouble xScale , wxDouble yScale );
1042
1043     // add the rotation to this matrix (radians)
1044     virtual void Rotate( wxDouble angle );
1045
1046     //
1047     // apply the transforms
1048     //
1049
1050     // applies that matrix to the point
1051     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
1052
1053     // applies the matrix except for translations
1054     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
1055
1056     // returns the native representation
1057     virtual void * GetNativeMatrix() const;
1058
1059 private :
1060     CGAffineTransform m_matrix;
1061 } ;
1062
1063 //-----------------------------------------------------------------------------
1064 // wxMacCoreGraphicsMatrix implementation
1065 //-----------------------------------------------------------------------------
1066
1067 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
1068 {
1069 }
1070
1071 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
1072 {
1073 }
1074
1075 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
1076 {
1077     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
1078     m->m_matrix = m_matrix ;
1079     return m;
1080 }
1081
1082 // concatenates the matrix
1083 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
1084 {
1085     m_matrix = CGAffineTransformConcat(*((CGAffineTransform*) t->GetNativeMatrix()), m_matrix );
1086 }
1087
1088 // sets the matrix to the respective values
1089 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1090     wxDouble tx, wxDouble ty)
1091 {
1092     m_matrix = CGAffineTransformMake((CGFloat) a,(CGFloat) b,(CGFloat) c,(CGFloat) d,(CGFloat) tx,(CGFloat) ty);
1093 }
1094
1095 // gets the component valuess of the matrix
1096 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
1097                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
1098 {
1099     if (a)  *a = m_matrix.a;
1100     if (b)  *b = m_matrix.b;
1101     if (c)  *c = m_matrix.c;
1102     if (d)  *d = m_matrix.d;
1103     if (tx) *tx= m_matrix.tx;
1104     if (ty) *ty= m_matrix.ty;
1105 }
1106
1107 // makes this the inverse matrix
1108 void wxMacCoreGraphicsMatrixData::Invert()
1109 {
1110     m_matrix = CGAffineTransformInvert( m_matrix );
1111 }
1112
1113 // returns true if the elements of the transformation matrix are equal ?
1114 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1115 {
1116     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
1117 }
1118
1119 // return true if this is the identity matrix
1120 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
1121 {
1122     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
1123         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
1124 }
1125
1126 //
1127 // transformation
1128 //
1129
1130 // add the translation to this matrix
1131 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
1132 {
1133     m_matrix = CGAffineTransformTranslate( m_matrix, (CGFloat) dx, (CGFloat) dy);
1134 }
1135
1136 // add the scale to this matrix
1137 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1138 {
1139     m_matrix = CGAffineTransformScale( m_matrix, (CGFloat) xScale, (CGFloat) yScale);
1140 }
1141
1142 // add the rotation to this matrix (radians)
1143 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
1144 {
1145     m_matrix = CGAffineTransformRotate( m_matrix, (CGFloat) angle);
1146 }
1147
1148 //
1149 // apply the transforms
1150 //
1151
1152 // applies that matrix to the point
1153 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1154 {
1155     CGPoint pt = CGPointApplyAffineTransform( CGPointMake((CGFloat) *x,(CGFloat) *y), m_matrix);
1156
1157     *x = pt.x;
1158     *y = pt.y;
1159 }
1160
1161 // applies the matrix except for translations
1162 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1163 {
1164     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake((CGFloat) *dx,(CGFloat) *dy) , m_matrix );
1165     *dx = sz.width;
1166     *dy = sz.height;
1167 }
1168
1169 // returns the native representation
1170 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
1171 {
1172     return (void*) &m_matrix;
1173 }
1174
1175 //
1176 // Graphics Path
1177 //
1178
1179 //-----------------------------------------------------------------------------
1180 // wxMacCoreGraphicsPath declaration
1181 //-----------------------------------------------------------------------------
1182
1183 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
1184 {
1185 public :
1186     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
1187
1188     ~wxMacCoreGraphicsPathData();
1189
1190     virtual wxGraphicsObjectRefData *Clone() const;
1191
1192     // begins a new subpath at (x,y)
1193     virtual void MoveToPoint( wxDouble x, wxDouble y );
1194
1195     // adds a straight line from the current point to (x,y)
1196     virtual void AddLineToPoint( wxDouble x, wxDouble y );
1197
1198     // adds a cubic Bezier curve from the current point, using two control points and an end point
1199     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
1200
1201     // closes the current sub-path
1202     virtual void CloseSubpath();
1203
1204     // gets the last point of the current path, (0,0) if not yet set
1205     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
1206
1207     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1208     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
1209
1210     //
1211     // These are convenience functions which - if not available natively will be assembled
1212     // using the primitives from above
1213     //
1214
1215     // adds a quadratic Bezier curve from the current point, using a control point and an end point
1216     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
1217
1218     // appends a rectangle as a new closed subpath
1219     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1220
1221     // appends a circle as a new closed subpath
1222     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
1223
1224     // appends an ellipsis as a new closed subpath fitting the passed rectangle
1225     virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
1226
1227     // 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)
1228     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
1229
1230     // adds another path
1231     virtual void AddPath( const wxGraphicsPathData* path );
1232
1233     // returns the native path
1234     virtual void * GetNativePath() const { return m_path; }
1235
1236     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
1237     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
1238
1239     // transforms each point of this path by the matrix
1240     virtual void Transform( const wxGraphicsMatrixData* matrix );
1241
1242     // gets the bounding box enclosing all points (possibly including control points)
1243     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
1244
1245     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
1246 private :
1247     CGMutablePathRef m_path;
1248 };
1249
1250 //-----------------------------------------------------------------------------
1251 // wxMacCoreGraphicsPath implementation
1252 //-----------------------------------------------------------------------------
1253
1254 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1255 {
1256     if ( path )
1257         m_path = path;
1258     else
1259         m_path = CGPathCreateMutable();
1260 }
1261
1262 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1263 {
1264     CGPathRelease( m_path );
1265 }
1266
1267 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1268 {
1269     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1270     return clone ;
1271 }
1272
1273
1274 // opens (starts) a new subpath
1275 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1276 {
1277     CGPathMoveToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1278 }
1279
1280 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1281 {
1282     CGPathAddLineToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1283 }
1284
1285 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1286 {
1287     CGPathAddCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) cx2, (CGFloat) cy2, (CGFloat) x , (CGFloat) y );
1288 }
1289
1290 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1291 {
1292     CGPathAddQuadCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) x , (CGFloat) y );
1293 }
1294
1295 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1296 {
1297     CGRect cgRect = { { (CGFloat) x , (CGFloat) y } , { (CGFloat) w , (CGFloat) h } };
1298     CGPathAddRect( m_path , NULL , cgRect );
1299 }
1300
1301 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1302 {
1303     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x-r,y-r,2*r,2*r));
1304 }
1305
1306 void wxMacCoreGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1307 {
1308     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x,y,w,h));
1309 }
1310
1311 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1312 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1313 {
1314     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1315     CGPathAddArc( m_path, NULL , (CGFloat) x, (CGFloat) y, (CGFloat) r, (CGFloat) startAngle, (CGFloat) endAngle, !clockwise);
1316 }
1317
1318 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1319 {
1320     CGPathAddArcToPoint( m_path, NULL , (CGFloat) x1, (CGFloat) y1, (CGFloat) x2, (CGFloat) y2, (CGFloat) r);
1321 }
1322
1323 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1324 {
1325     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1326 }
1327
1328 // closes the current subpath
1329 void wxMacCoreGraphicsPathData::CloseSubpath()
1330 {
1331     CGPathCloseSubpath( m_path );
1332 }
1333
1334 // gets the last point of the current path, (0,0) if not yet set
1335 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1336 {
1337     CGPoint p = CGPathGetCurrentPoint( m_path );
1338     *x = p.x;
1339     *y = p.y;
1340 }
1341
1342 // transforms each point of this path by the matrix
1343 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1344 {
1345     CGMutablePathRef p = CGPathCreateMutable() ;
1346     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1347     CGPathRelease( m_path );
1348     m_path = p;
1349 }
1350
1351 // gets the bounding box enclosing all points (possibly including control points)
1352 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1353 {
1354     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1355     *x = bounds.origin.x;
1356     *y = bounds.origin.y;
1357     *w = bounds.size.width;
1358     *h = bounds.size.height;
1359 }
1360
1361 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle) const
1362 {
1363     return CGPathContainsPoint( m_path, NULL, CGPointMake((CGFloat) x,(CGFloat) y), fillStyle == wxODDEVEN_RULE );
1364 }
1365
1366 //
1367 // Graphics Context
1368 //
1369
1370 //-----------------------------------------------------------------------------
1371 // wxMacCoreGraphicsContext declaration
1372 //-----------------------------------------------------------------------------
1373
1374 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1375 {
1376 public:
1377     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1378
1379 #if wxOSX_USE_CARBON
1380     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1381 #endif
1382
1383     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1384
1385     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1386
1387     wxMacCoreGraphicsContext();
1388
1389     ~wxMacCoreGraphicsContext();
1390
1391     void Init();
1392
1393     virtual void StartPage( wxDouble width, wxDouble height );
1394
1395     virtual void EndPage();
1396
1397     virtual void Flush();
1398
1399     // push the current state of the context, ie the transformation matrix on a stack
1400     virtual void PushState();
1401
1402     // pops a stored state from the stack
1403     virtual void PopState();
1404
1405     // clips drawings to the region
1406     virtual void Clip( const wxRegion &region );
1407
1408     // clips drawings to the rect
1409     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1410
1411     // resets the clipping to original extent
1412     virtual void ResetClip();
1413
1414     virtual void * GetNativeContext();
1415
1416     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
1417
1418     virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
1419
1420     virtual bool SetCompositionMode(wxCompositionMode op);
1421
1422     virtual void BeginLayer(wxDouble opacity);
1423
1424     virtual void EndLayer();
1425
1426     //
1427     // transformation
1428     //
1429
1430     // translate
1431     virtual void Translate( wxDouble dx , wxDouble dy );
1432
1433     // scale
1434     virtual void Scale( wxDouble xScale , wxDouble yScale );
1435
1436     // rotate (radians)
1437     virtual void Rotate( wxDouble angle );
1438
1439     // concatenates this transform with the current transform of this context
1440     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1441
1442     // sets the transform of this context
1443     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1444
1445     // gets the matrix of this context
1446     virtual wxGraphicsMatrix GetTransform() const;
1447     //
1448     // setting the paint
1449     //
1450
1451     // strokes along a path with the current pen
1452     virtual void StrokePath( const wxGraphicsPath &path );
1453
1454     // fills a path with the current brush
1455     virtual void FillPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1456
1457     // draws a path by first filling and then stroking
1458     virtual void DrawPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1459
1460     virtual bool ShouldOffset() const
1461     {
1462         if ( !m_enableOffset )
1463             return false;
1464
1465         int penwidth = 0 ;
1466         if ( !m_pen.IsNull() )
1467         {
1468             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1469             if ( penwidth == 0 )
1470                 penwidth = 1;
1471         }
1472         return ( penwidth % 2 ) == 1;
1473     }
1474     //
1475     // text
1476     //
1477
1478     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1479         wxDouble *descent, wxDouble *externalLeading ) const;
1480
1481     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1482
1483     //
1484     // image support
1485     //
1486
1487     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1488
1489     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1490
1491     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1492
1493     // fast convenience methods
1494
1495
1496     virtual void DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1497
1498     void SetNativeContext( CGContextRef cg );
1499
1500     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsContext)
1501
1502 private:
1503     bool EnsureIsValid();
1504
1505     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
1506     virtual void DoDrawRotatedText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1507
1508     CGContextRef m_cgContext;
1509 #if wxOSX_USE_CARBON
1510     WindowRef m_windowRef;
1511 #else
1512     WXWidget m_view;
1513 #endif
1514     bool m_contextSynthesized;
1515     CGAffineTransform m_windowTransform;
1516     bool m_invisible;
1517
1518 #if wxOSX_USE_COCOA_OR_CARBON
1519     wxCFRef<HIShapeRef> m_clipRgn;
1520 #endif
1521 };
1522
1523 //-----------------------------------------------------------------------------
1524 // device context implementation
1525 //
1526 // more and more of the dc functionality should be implemented by calling
1527 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1528 // also coordinate conversions should be moved to native matrix ops
1529 //-----------------------------------------------------------------------------
1530
1531 // we always stock two context states, one at entry, to be able to preserve the
1532 // state we were called with, the other one after changing to HI Graphics orientation
1533 // (this one is used for getting back clippings etc)
1534
1535 //-----------------------------------------------------------------------------
1536 // wxMacCoreGraphicsContext implementation
1537 //-----------------------------------------------------------------------------
1538
1539 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1540
1541 class wxQuartzOffsetHelper
1542 {
1543 public :
1544     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1545     {
1546         m_cg = cg;
1547         m_offset = offset;
1548         if ( m_offset )
1549         {
1550             m_userOffset = CGContextConvertSizeToUserSpace( m_cg, CGSizeMake( 0.5 , 0.5 ) );
1551             CGContextTranslateCTM( m_cg, m_userOffset.width , m_userOffset.height );
1552         }
1553         else
1554         {
1555             m_userOffset = CGSizeMake(0.0, 0.0);
1556         }
1557
1558     }
1559     ~wxQuartzOffsetHelper( )
1560     {
1561         if ( m_offset )
1562             CGContextTranslateCTM( m_cg, -m_userOffset.width , -m_userOffset.height );
1563     }
1564 public :
1565     CGSize m_userOffset;
1566     CGContextRef m_cg;
1567     bool m_offset;
1568 } ;
1569
1570 void wxMacCoreGraphicsContext::Init()
1571 {
1572     m_cgContext = NULL;
1573     m_contextSynthesized = false;
1574     m_width = 0;
1575     m_height = 0;
1576 #if wxOSX_USE_CARBON
1577     m_windowRef = NULL;
1578 #endif
1579 #if wxOSX_USE_COCOA_OR_IPHONE
1580     m_view = NULL;
1581 #endif
1582     m_invisible = false;
1583     m_antialias = wxANTIALIAS_DEFAULT;
1584     m_interpolation = wxINTERPOLATION_DEFAULT;
1585 }
1586
1587 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1588 {
1589     Init();
1590     SetNativeContext(cgcontext);
1591     m_width = width;
1592     m_height = height;
1593 }
1594
1595 #if wxOSX_USE_CARBON
1596 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1597 {
1598     Init();
1599     m_windowRef = window;
1600     m_enableOffset = true;
1601 }
1602 #endif
1603
1604 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1605 {
1606     Init();
1607
1608     m_enableOffset = true;
1609     wxSize sz = window->GetSize();
1610     m_width = sz.x;
1611     m_height = sz.y;
1612
1613 #if wxOSX_USE_COCOA_OR_IPHONE
1614     m_view = window->GetHandle();
1615
1616 #if wxOSX_USE_COCOA
1617     if ( ! window->GetPeer()->IsFlipped() )
1618     {
1619         m_windowTransform = CGAffineTransformMakeTranslation( 0 , m_height );
1620         m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1621     }
1622     else
1623 #endif
1624     {
1625         m_windowTransform = CGAffineTransformIdentity;
1626     }
1627 #else
1628     int originX , originY;
1629     originX = originY = 0;
1630     Rect bounds = { 0,0,0,0 };
1631     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1632     window->MacWindowToRootWindow( &originX , &originY );
1633     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1634     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1635     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1636     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1637 #endif
1638 }
1639
1640 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1641 {
1642     Init();
1643 }
1644
1645 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1646 {
1647     Init();
1648     wxLogDebug(wxT("Illegal Constructor called"));
1649 }
1650
1651 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1652 {
1653     SetNativeContext(NULL);
1654 }
1655
1656
1657 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1658 {
1659     CGRect r;
1660     if ( width != 0 && height != 0)
1661         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) width  , (CGFloat) height );
1662     else
1663         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) m_width  , (CGFloat) m_height );
1664
1665     CGContextBeginPage(m_cgContext,  &r );
1666 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1667 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1668 }
1669
1670 void wxMacCoreGraphicsContext::EndPage()
1671 {
1672     CGContextEndPage(m_cgContext);
1673 }
1674
1675 void wxMacCoreGraphicsContext::Flush()
1676 {
1677     CGContextFlush(m_cgContext);
1678 }
1679
1680 bool wxMacCoreGraphicsContext::EnsureIsValid()
1681 {
1682     if ( !m_cgContext )
1683     {
1684         if (m_invisible)
1685             return false;
1686
1687 #if wxOSX_USE_COCOA
1688         if ( wxOSXLockFocus(m_view) )
1689         {
1690             m_cgContext = wxOSXGetContextFromCurrentContext();
1691             wxASSERT_MSG( m_cgContext != NULL, wxT("Unable to retrieve drawing context from View"));
1692         }
1693         else
1694         {
1695             m_invisible = true;
1696         }
1697 #endif
1698 #if wxOSX_USE_IPHONE
1699         m_cgContext = wxOSXGetContextFromCurrentContext();
1700         if ( m_cgContext == NULL )
1701         {
1702             m_invisible = true;
1703         }
1704 #endif
1705 #if wxOSX_USE_CARBON
1706         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1707         if ( status != noErr )
1708         {
1709             wxFAIL_MSG("Cannot nest wxDCs on the same window");
1710         }
1711 #endif
1712         if ( m_cgContext )
1713         {
1714             CGContextSaveGState( m_cgContext );
1715 #if wxOSX_USE_COCOA_OR_CARBON
1716             if ( m_clipRgn.get() )
1717             {
1718                 wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
1719                 // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1720                 if ( HIShapeIsEmpty(hishape))
1721                 {
1722                     CGRect empty = CGRectMake( 0,0,0,0 );
1723                     CGContextClipToRect( m_cgContext, empty );
1724                 }
1725                 else
1726                 {
1727                     HIShapeReplacePathInCGContext( hishape, m_cgContext );
1728                     CGContextClip( m_cgContext );
1729                 }
1730             }
1731 #endif
1732             CGContextConcatCTM( m_cgContext, m_windowTransform );
1733             CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
1734             m_contextSynthesized = true;
1735             CGContextSaveGState( m_cgContext );
1736
1737 #if 0 // turn on for debugging of clientdc
1738             static float color = 0.5 ;
1739             static int channel = 0 ;
1740             CGRect bounds = CGRectMake(-1000,-1000,2000,2000);
1741             CGContextSetRGBFillColor( m_cgContext, channel == 0 ? color : 0.5 ,
1742                 channel == 1 ? color : 0.5 , channel == 2 ? color : 0.5 , 1 );
1743             CGContextFillRect( m_cgContext, bounds );
1744             color += 0.1 ;
1745             if ( color > 0.9 )
1746             {
1747                 color = 0.5 ;
1748                 channel++ ;
1749                 if ( channel == 3 )
1750                     channel = 0 ;
1751             }
1752 #endif
1753         }
1754     }
1755     return m_cgContext != NULL;
1756 }
1757
1758 bool wxMacCoreGraphicsContext::SetAntialiasMode(wxAntialiasMode antialias)
1759 {
1760     if (!EnsureIsValid())
1761         return true;
1762
1763     if (m_antialias == antialias)
1764         return true;
1765
1766     m_antialias = antialias;
1767
1768     bool antialiasMode;
1769     switch (antialias)
1770     {
1771         case wxANTIALIAS_DEFAULT:
1772             antialiasMode = true;
1773             break;
1774         case wxANTIALIAS_NONE:
1775             antialiasMode = false;
1776             break;
1777         default:
1778             return false;
1779     }
1780     CGContextSetShouldAntialias(m_cgContext, antialiasMode);
1781     return true;
1782 }
1783
1784 bool wxMacCoreGraphicsContext::SetInterpolationQuality(wxInterpolationQuality interpolation)
1785 {
1786     if (!EnsureIsValid())
1787         return true;
1788
1789     if (m_interpolation == interpolation)
1790         return true;
1791
1792     m_interpolation = interpolation;
1793     CGInterpolationQuality quality;
1794
1795     switch (interpolation)
1796     {
1797         case wxINTERPOLATION_DEFAULT:
1798             quality = kCGInterpolationDefault;
1799             break;
1800         case wxINTERPOLATION_NONE:
1801             quality = kCGInterpolationNone;
1802             break;
1803         case wxINTERPOLATION_FAST:
1804             quality = kCGInterpolationLow;
1805             break;
1806         case wxINTERPOLATION_GOOD:
1807             quality = UMAGetSystemVersion() < 0x1060 ? kCGInterpolationHigh : (CGInterpolationQuality) 4 /*kCGInterpolationMedium only on 10.6*/;
1808             break;
1809         case wxINTERPOLATION_BEST:
1810             quality = kCGInterpolationHigh;
1811             break;
1812         default:
1813             return false;
1814     }
1815     CGContextSetInterpolationQuality(m_cgContext, quality);
1816     return true;
1817 }
1818
1819 bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
1820 {
1821     if (!EnsureIsValid())
1822         return true;
1823
1824     if ( m_composition == op )
1825         return true;
1826
1827     m_composition = op;
1828
1829     if (m_composition == wxCOMPOSITION_DEST)
1830         return true;
1831
1832 #if wxOSX_USE_COCOA_OR_CARBON
1833     if ( UMAGetSystemVersion() < 0x1060 )
1834     {
1835         CGCompositeOperation cop = kCGCompositeOperationSourceOver;
1836         CGBlendMode mode = kCGBlendModeNormal;
1837         switch( op )
1838         {
1839         case wxCOMPOSITION_CLEAR:
1840             cop = kCGCompositeOperationClear;
1841             break;
1842         case wxCOMPOSITION_SOURCE:
1843             cop = kCGCompositeOperationCopy;
1844             break;
1845         case wxCOMPOSITION_OVER:
1846             mode = kCGBlendModeNormal;
1847             break;
1848         case wxCOMPOSITION_IN:
1849             cop = kCGCompositeOperationSourceIn;
1850             break;
1851         case wxCOMPOSITION_OUT:
1852             cop = kCGCompositeOperationSourceOut;
1853             break;
1854         case wxCOMPOSITION_ATOP:
1855             cop = kCGCompositeOperationSourceAtop;
1856             break;
1857         case wxCOMPOSITION_DEST_OVER:
1858             cop = kCGCompositeOperationDestinationOver;
1859             break;
1860         case wxCOMPOSITION_DEST_IN:
1861             cop = kCGCompositeOperationDestinationIn;
1862             break;
1863         case wxCOMPOSITION_DEST_OUT:
1864             cop = kCGCompositeOperationDestinationOut;
1865             break;
1866         case wxCOMPOSITION_DEST_ATOP:
1867            cop = kCGCompositeOperationDestinationAtop;
1868             break;
1869         case wxCOMPOSITION_XOR:
1870             cop = kCGCompositeOperationXOR;
1871             break;
1872 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1873         case wxCOMPOSITION_ADD:
1874             mode = kCGBlendModePlusLighter ;
1875             break;
1876 #endif
1877         default:
1878             return false;
1879         }
1880         if ( cop != kCGCompositeOperationSourceOver )
1881             CGContextSetCompositeOperation(m_cgContext, cop);
1882         else
1883             CGContextSetBlendMode(m_cgContext, mode);
1884     }
1885 #endif
1886 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1887     else
1888     {
1889         CGBlendMode mode = kCGBlendModeNormal;
1890         switch( op )
1891         {
1892         case wxCOMPOSITION_CLEAR:
1893             mode = kCGBlendModeClear;
1894             break;
1895         case wxCOMPOSITION_SOURCE:
1896             mode = kCGBlendModeCopy;
1897             break;
1898         case wxCOMPOSITION_OVER:
1899             mode = kCGBlendModeNormal;
1900             break;
1901         case wxCOMPOSITION_IN:
1902             mode = kCGBlendModeSourceIn;
1903             break;
1904         case wxCOMPOSITION_OUT:
1905             mode = kCGBlendModeSourceOut;
1906             break;
1907         case wxCOMPOSITION_ATOP:
1908             mode = kCGBlendModeSourceAtop;
1909             break;
1910         case wxCOMPOSITION_DEST_OVER:
1911             mode = kCGBlendModeDestinationOver;
1912             break;
1913         case wxCOMPOSITION_DEST_IN:
1914             mode = kCGBlendModeDestinationIn;
1915             break;
1916         case wxCOMPOSITION_DEST_OUT:
1917             mode = kCGBlendModeDestinationOut;
1918             break;
1919         case wxCOMPOSITION_DEST_ATOP:
1920            mode = kCGBlendModeDestinationAtop;
1921             break;
1922         case wxCOMPOSITION_XOR:
1923             mode = kCGBlendModeXOR;
1924             break;
1925
1926         case wxCOMPOSITION_ADD:
1927             mode = kCGBlendModePlusLighter ;
1928             break;
1929         default:
1930             return false;
1931         }
1932         CGContextSetBlendMode(m_cgContext, mode);
1933     }
1934 #endif
1935     return true;
1936 }
1937
1938 void wxMacCoreGraphicsContext::BeginLayer(wxDouble opacity)
1939 {
1940     CGContextSaveGState(m_cgContext);
1941     CGContextSetAlpha(m_cgContext, (CGFloat) opacity);
1942     CGContextBeginTransparencyLayer(m_cgContext, 0);
1943 }
1944
1945 void wxMacCoreGraphicsContext::EndLayer()
1946 {
1947     CGContextEndTransparencyLayer(m_cgContext);
1948     CGContextRestoreGState(m_cgContext);
1949 }
1950
1951 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1952 {
1953 #if wxOSX_USE_COCOA_OR_CARBON
1954     if( m_cgContext )
1955     {
1956         wxCFRef<HIShapeRef> shape = wxCFRefFromGet(region.GetWXHRGN());
1957         // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1958         if ( HIShapeIsEmpty(shape))
1959         {
1960             CGRect empty = CGRectMake( 0,0,0,0 );
1961             CGContextClipToRect( m_cgContext, empty );
1962         }
1963         else
1964         {
1965             HIShapeReplacePathInCGContext( shape, m_cgContext );
1966             CGContextClip( m_cgContext );
1967         }
1968     }
1969     else
1970     {
1971         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1972         // to regions we try at least to have correct translations
1973         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
1974
1975         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1976         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1977         m_clipRgn.reset(mutableShape);
1978     }
1979 #else
1980     // allow usage as measuring context
1981     // wxASSERT_MSG( m_cgContext != NULL, "Needs a valid context for clipping" );
1982 #endif
1983 }
1984
1985 // clips drawings to the rect
1986 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1987 {
1988     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
1989     if ( m_cgContext )
1990     {
1991         CGContextClipToRect( m_cgContext, r );
1992     }
1993     else
1994     {
1995 #if wxOSX_USE_COCOA_OR_CARBON
1996         // the clipping itself must be stored as device coordinates, otherwise
1997         // we cannot apply it back correctly
1998         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1999         r.size= CGSizeApplyAffineTransform(r.size, m_windowTransform);
2000         m_clipRgn.reset(HIShapeCreateWithRect(&r));
2001 #else
2002     // allow usage as measuring context
2003     // wxFAIL_MSG( "Needs a valid context for clipping" );
2004 #endif
2005     }
2006 }
2007
2008     // resets the clipping to original extent
2009 void wxMacCoreGraphicsContext::ResetClip()
2010 {
2011     if ( m_cgContext )
2012     {
2013         // there is no way for clearing the clip, we can only revert to the stored
2014         // state, but then we have to make sure everything else is NOT restored
2015         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2016         CGContextRestoreGState( m_cgContext );
2017         CGContextSaveGState( m_cgContext );
2018         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
2019         transformNew = CGAffineTransformInvert( transformNew ) ;
2020         CGContextConcatCTM( m_cgContext, transformNew);
2021         CGContextConcatCTM( m_cgContext, transform);
2022     }
2023     else
2024     {
2025 #if wxOSX_USE_COCOA_OR_CARBON
2026         m_clipRgn.reset();
2027 #else
2028     // allow usage as measuring context
2029     // wxFAIL_MSG( "Needs a valid context for clipping" );
2030 #endif
2031     }
2032 }
2033
2034 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
2035 {
2036     if ( m_pen.IsNull() )
2037         return ;
2038
2039     if (!EnsureIsValid())
2040         return;
2041
2042     if (m_composition == wxCOMPOSITION_DEST)
2043         return;
2044
2045     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2046
2047     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2048     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2049     CGContextStrokePath( m_cgContext );
2050 }
2051
2052 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2053 {
2054     if (!EnsureIsValid())
2055         return;
2056
2057     if (m_composition == wxCOMPOSITION_DEST)
2058         return;
2059
2060     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2061     {
2062         // when using shading, we cannot draw pen and brush at the same time
2063         // revert to the base implementation of first filling and then stroking
2064         wxGraphicsContext::DrawPath( path, fillStyle );
2065         return;
2066     }
2067
2068     CGPathDrawingMode mode = kCGPathFill ;
2069     if ( m_brush.IsNull() )
2070     {
2071         if ( m_pen.IsNull() )
2072             return;
2073         else
2074             mode = kCGPathStroke;
2075     }
2076     else
2077     {
2078         if ( m_pen.IsNull() )
2079         {
2080             if ( fillStyle == wxODDEVEN_RULE )
2081                 mode = kCGPathEOFill;
2082             else
2083                 mode = kCGPathFill;
2084         }
2085         else
2086         {
2087             if ( fillStyle == wxODDEVEN_RULE )
2088                 mode = kCGPathEOFillStroke;
2089             else
2090                 mode = kCGPathFillStroke;
2091         }
2092     }
2093
2094     if ( !m_brush.IsNull() )
2095         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2096     if ( !m_pen.IsNull() )
2097         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2098
2099     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2100
2101     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2102     CGContextDrawPath( m_cgContext , mode );
2103 }
2104
2105 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2106 {
2107     if ( m_brush.IsNull() )
2108         return;
2109
2110     if (!EnsureIsValid())
2111         return;
2112
2113     if (m_composition == wxCOMPOSITION_DEST)
2114         return;
2115
2116     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2117     {
2118         CGContextSaveGState( m_cgContext );
2119         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2120         CGContextClip( m_cgContext );
2121         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2122         CGContextRestoreGState( m_cgContext);
2123     }
2124     else
2125     {
2126         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2127         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2128         if ( fillStyle == wxODDEVEN_RULE )
2129             CGContextEOFillPath( m_cgContext );
2130         else
2131             CGContextFillPath( m_cgContext );
2132     }
2133 }
2134
2135 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
2136 {
2137     // we allow either setting or clearing but not replacing
2138     wxASSERT( m_cgContext == NULL || cg == NULL );
2139
2140     if ( m_cgContext )
2141     {
2142         CGContextRestoreGState( m_cgContext );
2143         CGContextRestoreGState( m_cgContext );
2144         if ( m_contextSynthesized )
2145         {
2146 #if wxOSX_USE_CARBON
2147             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
2148 #endif
2149 #if wxOSX_USE_COCOA
2150             wxOSXUnlockFocus(m_view);
2151 #endif
2152         }
2153         else
2154             CGContextRelease(m_cgContext);
2155     }
2156
2157     m_cgContext = cg;
2158
2159     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
2160     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
2161     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
2162     // for this one operation.
2163
2164     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
2165     // can be removed.
2166     if (m_cgContext)
2167     {
2168         CGContextRetain(m_cgContext);
2169         CGContextSaveGState( m_cgContext );
2170         CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
2171         CGContextSaveGState( m_cgContext );
2172         m_contextSynthesized = false;
2173     }
2174 }
2175
2176 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
2177 {
2178     if ( m_cgContext )
2179         CGContextTranslateCTM( m_cgContext, (CGFloat) dx, (CGFloat) dy );
2180     else
2181         m_windowTransform = CGAffineTransformTranslate(m_windowTransform, (CGFloat) dx, (CGFloat) dy);
2182 }
2183
2184 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
2185 {
2186     if ( m_cgContext )
2187         CGContextScaleCTM( m_cgContext , (CGFloat) xScale , (CGFloat) yScale );
2188     else
2189         m_windowTransform = CGAffineTransformScale(m_windowTransform, (CGFloat) xScale, (CGFloat) yScale);
2190 }
2191
2192 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
2193 {
2194     if ( m_cgContext )
2195         CGContextRotateCTM( m_cgContext , (CGFloat) angle );
2196     else
2197         m_windowTransform = CGAffineTransformRotate(m_windowTransform, (CGFloat) angle);
2198 }
2199
2200 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2201 {
2202     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
2203     DrawBitmap(bitmap, x, y, w, h);
2204 }
2205
2206 void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2207 {
2208     if (!EnsureIsValid())
2209         return;
2210
2211     if (m_composition == wxCOMPOSITION_DEST)
2212         return;
2213
2214 #ifdef __WXMAC__
2215     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
2216     CGImageRef image = refdata->GetBitmap();
2217     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2218     if ( refdata->IsMonochrome() == 1 )
2219     {
2220         // is a mask, the '1' in the mask tell where to draw the current brush
2221         if (  !m_brush.IsNull() )
2222         {
2223             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2224             {
2225                 // TODO clip to mask
2226             /*
2227                 CGContextSaveGState( m_cgContext );
2228                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2229                 CGContextClip( m_cgContext );
2230                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2231                 CGContextRestoreGState( m_cgContext);
2232             */
2233             }
2234             else
2235             {
2236                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2237                 wxMacDrawCGImage( m_cgContext , &r , image );
2238             }
2239         }
2240     }
2241     else
2242     {
2243         wxMacDrawCGImage( m_cgContext , &r , image );
2244     }
2245 #endif
2246 }
2247
2248 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2249 {
2250     if (!EnsureIsValid())
2251         return;
2252
2253     if (m_composition == wxCOMPOSITION_DEST)
2254         return;
2255
2256     CGRect r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) w , (CGFloat) h );
2257     CGContextSaveGState( m_cgContext );
2258     CGContextTranslateCTM( m_cgContext,(CGFloat) x ,(CGFloat) (y + h) );
2259     CGContextScaleCTM( m_cgContext, 1, -1 );
2260 #if wxOSX_USE_COCOA_OR_CARBON
2261     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
2262         NULL , kPlotIconRefNormalFlags , icon.GetHICON() );
2263 #endif
2264     CGContextRestoreGState( m_cgContext );
2265 }
2266
2267 void wxMacCoreGraphicsContext::PushState()
2268 {
2269     if (!EnsureIsValid())
2270         return;
2271
2272     CGContextSaveGState( m_cgContext );
2273 }
2274
2275 void wxMacCoreGraphicsContext::PopState()
2276 {
2277     if (!EnsureIsValid())
2278         return;
2279
2280     CGContextRestoreGState( m_cgContext );
2281 }
2282
2283 void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDouble y )
2284 {
2285     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2286
2287     if (!EnsureIsValid())
2288         return;
2289
2290     if (m_composition == wxCOMPOSITION_DEST)
2291         return;
2292
2293 #if wxOSX_USE_CORE_TEXT
2294     if ( UMAGetSystemVersion() >= 0x1050 )
2295     {
2296         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2297         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2298         CTFontRef font = fref->OSXGetCTFont();
2299         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2300         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
2301         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
2302          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
2303         CFTypeRef values[] = { font, col, underlined };
2304         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2305                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2306         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2307         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2308
2309         y += CTFontGetAscent(font);
2310
2311         CGContextSaveGState(m_cgContext);
2312         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2313         CGContextScaleCTM(m_cgContext, 1, -1);
2314         CGContextSetTextPosition(m_cgContext, 0, 0);
2315         CTLineDraw( line, m_cgContext );
2316         CGContextRestoreGState(m_cgContext);
2317         CFRelease( col );
2318         return;
2319     }
2320 #endif
2321 #if wxOSX_USE_ATSU_TEXT
2322     {
2323         DrawText(str, x, y, 0.0);
2324         return;
2325     }
2326 #endif
2327 #if wxOSX_USE_IPHONE
2328     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2329
2330     CGContextSaveGState(m_cgContext);
2331
2332     CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2333     CGContextSetTextDrawingMode (m_cgContext, kCGTextFill);
2334     CGContextSetFillColorWithColor( m_cgContext, col );
2335
2336     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2337     DrawTextInContext( m_cgContext, CGPointMake( x, y ), fref->GetUIFont() , text.AsNSString() );
2338
2339     CGContextRestoreGState(m_cgContext);
2340     CFRelease( col );
2341 #endif
2342 }
2343
2344 void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
2345                                                  wxDouble x, wxDouble y,
2346                                                  wxDouble angle)
2347 {
2348     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2349
2350     if (!EnsureIsValid())
2351         return;
2352
2353     if (m_composition == wxCOMPOSITION_DEST)
2354         return;
2355
2356 #if wxOSX_USE_CORE_TEXT
2357     if ( UMAGetSystemVersion() >= 0x1050 )
2358     {
2359         // default implementation takes care of rotation and calls non rotated DrawText afterwards
2360         wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2361         return;
2362     }
2363 #endif
2364 #if wxOSX_USE_ATSU_TEXT
2365     {
2366         OSStatus status = noErr;
2367         ATSUTextLayout atsuLayout;
2368         wxMacUniCharBuffer unibuf( str );
2369         UniCharCount chars = unibuf.GetChars();
2370
2371         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2372         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2373                                                    &chars , &style , &atsuLayout );
2374
2375         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
2376
2377         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2378         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2379
2380         int iAngle = int( angle * RAD2DEG );
2381         if ( abs(iAngle) > 0 )
2382         {
2383             Fixed atsuAngle = IntToFixed( iAngle );
2384             ATSUAttributeTag atsuTags[] =
2385             {
2386                 kATSULineRotationTag ,
2387             };
2388             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2389             {
2390                 sizeof( Fixed ) ,
2391             };
2392             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2393             {
2394                 &atsuAngle ,
2395             };
2396             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2397                                              atsuTags, atsuSizes, atsuValues );
2398         }
2399
2400         {
2401             ATSUAttributeTag atsuTags[] =
2402             {
2403                 kATSUCGContextTag ,
2404             };
2405             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2406             {
2407                 sizeof( CGContextRef ) ,
2408             };
2409             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2410             {
2411                 &m_cgContext ,
2412             };
2413             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2414                                              atsuTags, atsuSizes, atsuValues );
2415         }
2416
2417         ATSUTextMeasurement textBefore, textAfter;
2418         ATSUTextMeasurement ascent, descent;
2419
2420         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2421                                             &textBefore , &textAfter, &ascent , &descent );
2422
2423         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2424
2425         Rect rect;
2426         x += (int)(sin(angle) * FixedToFloat(ascent));
2427         y += (int)(cos(angle) * FixedToFloat(ascent));
2428
2429         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2430                                         IntToFixed(x) , IntToFixed(y) , &rect );
2431         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2432
2433         CGContextSaveGState(m_cgContext);
2434         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2435         CGContextScaleCTM(m_cgContext, 1, -1);
2436         status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2437                                 IntToFixed(0) , IntToFixed(0) );
2438
2439         wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
2440
2441         CGContextRestoreGState(m_cgContext);
2442
2443         ::ATSUDisposeTextLayout(atsuLayout);
2444
2445         return;
2446     }
2447 #endif
2448 #if wxOSX_USE_IPHONE
2449     // default implementation takes care of rotation and calls non rotated DrawText afterwards
2450     wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2451 #endif
2452 }
2453
2454 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2455                             wxDouble *descent, wxDouble *externalLeading ) const
2456 {
2457     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::GetTextExtent - no valid font set") );
2458
2459     if ( width )
2460         *width = 0;
2461     if ( height )
2462         *height = 0;
2463     if ( descent )
2464         *descent = 0;
2465     if ( externalLeading )
2466         *externalLeading = 0;
2467
2468     if (str.empty())
2469         return;
2470
2471 #if wxOSX_USE_CORE_TEXT
2472     if ( UMAGetSystemVersion() >= 0x1050 )
2473     {
2474         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2475         CTFontRef font = fref->OSXGetCTFont();
2476
2477         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2478         CFStringRef keys[] = { kCTFontAttributeName  };
2479         CFTypeRef values[] = { font };
2480         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2481                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2482         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2483         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2484
2485         CGFloat a, d, l, w;
2486         w = CTLineGetTypographicBounds(line, &a, &d, &l);
2487
2488         if ( height )
2489             *height = a+d+l;
2490         if ( descent )
2491             *descent = d;
2492         if ( externalLeading )
2493             *externalLeading = l;
2494         if ( width )
2495             *width = w;
2496         return;
2497     }
2498 #endif
2499 #if wxOSX_USE_ATSU_TEXT
2500     {
2501         OSStatus status = noErr;
2502
2503         ATSUTextLayout atsuLayout;
2504         wxMacUniCharBuffer unibuf( str );
2505         UniCharCount chars = unibuf.GetChars();
2506
2507         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2508         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2509                                                    &chars , &style , &atsuLayout );
2510
2511         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2512
2513         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2514         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2515
2516         ATSUTextMeasurement textBefore, textAfter;
2517         ATSUTextMeasurement textAscent, textDescent;
2518
2519         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2520                                             &textBefore , &textAfter, &textAscent , &textDescent );
2521
2522         if ( height )
2523             *height = FixedToFloat(textAscent + textDescent);
2524         if ( descent )
2525             *descent = FixedToFloat(textDescent);
2526         if ( externalLeading )
2527             *externalLeading = 0;
2528         if ( width )
2529             *width = FixedToFloat(textAfter - textBefore);
2530
2531         ::ATSUDisposeTextLayout(atsuLayout);
2532
2533         return;
2534     }
2535 #endif
2536 #if wxOSX_USE_IPHONE
2537     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2538
2539     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2540     CGSize sz = MeasureTextInContext( fref->GetUIFont() , text.AsNSString() );
2541
2542     if ( height )
2543         *height = sz.height;
2544         /*
2545     if ( descent )
2546         *descent = FixedToFloat(textDescent);
2547     if ( externalLeading )
2548         *externalLeading = 0;
2549         */
2550     if ( width )
2551         *width = sz.width;
2552 #endif
2553 }
2554
2555 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2556 {
2557     widths.Empty();
2558     widths.Add(0, text.length());
2559
2560     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2561
2562     if (text.empty())
2563         return;
2564
2565 #if wxOSX_USE_CORE_TEXT
2566     {
2567         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2568         CTFontRef font = fref->OSXGetCTFont();
2569
2570         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
2571         CFStringRef keys[] = { kCTFontAttributeName  };
2572         CFTypeRef values[] = { font };
2573         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2574                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2575         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, t, attributes) );
2576         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2577
2578         int chars = text.length();
2579         for ( int pos = 0; pos < (int)chars; pos ++ )
2580         {
2581             widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL );
2582         }
2583
2584         return;
2585     }
2586 #endif
2587 #if wxOSX_USE_ATSU_TEXT
2588     {
2589         OSStatus status = noErr;
2590         ATSUTextLayout atsuLayout;
2591         wxMacUniCharBuffer unibuf( text );
2592         UniCharCount chars = unibuf.GetChars();
2593
2594         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2595         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2596                                           &chars , &style , &atsuLayout );
2597
2598         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2599
2600         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2601         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2602
2603 // new implementation from JS, keep old one just in case
2604 #if 0
2605         for ( int pos = 0; pos < (int)chars; pos ++ )
2606         {
2607             unsigned long actualNumberOfBounds = 0;
2608             ATSTrapezoid glyphBounds;
2609
2610             // We get a single bound, since the text should only require one. If it requires more, there is an issue
2611             OSStatus result;
2612             result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
2613                                         kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
2614             if (result != noErr || actualNumberOfBounds != 1 )
2615                 return;
2616
2617             widths[pos] = FixedToFloat( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
2618             //unsigned char uch = s[i];
2619         }
2620 #else
2621         ATSLayoutRecord *layoutRecords = NULL;
2622         ItemCount glyphCount = 0;
2623
2624         // Get the glyph extents
2625         OSStatus err = ::ATSUDirectGetLayoutDataArrayPtrFromTextLayout(atsuLayout,
2626                                                                        0,
2627                                                                        kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2628                                                                        (void **)
2629                                                                        &layoutRecords,
2630                                                                        &glyphCount);
2631         wxASSERT(glyphCount == (text.length()+1));
2632
2633         if ( err == noErr && glyphCount == (text.length()+1))
2634         {
2635             for ( int pos = 1; pos < (int)glyphCount ; pos ++ )
2636             {
2637                 widths[pos-1] = FixedToFloat( layoutRecords[pos].realPos );
2638             }
2639         }
2640
2641         ::ATSUDirectReleaseLayoutDataArrayPtr(NULL,
2642                                               kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2643                                               (void **) &layoutRecords);
2644 #endif
2645         ::ATSUDisposeTextLayout(atsuLayout);
2646     }
2647 #endif
2648 #if wxOSX_USE_IPHONE
2649     // TODO core graphics text implementation here
2650 #endif
2651 }
2652
2653 void * wxMacCoreGraphicsContext::GetNativeContext()
2654 {
2655     return m_cgContext;
2656 }
2657
2658
2659 void wxMacCoreGraphicsContext::DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2660 {
2661     if (m_composition == wxCOMPOSITION_DEST)
2662         return;
2663
2664     CGRect rect = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2665     if ( !m_brush.IsNull() )
2666     {
2667         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2668         CGContextFillRect(m_cgContext, rect);
2669     }
2670
2671     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2672     if ( !m_pen.IsNull() )
2673     {
2674         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2675         CGContextStrokeRect(m_cgContext, rect);
2676     }
2677 }
2678
2679 // concatenates this transform with the current transform of this context
2680 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
2681 {
2682     if ( m_cgContext )
2683         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2684     else
2685         m_windowTransform = CGAffineTransformConcat(*(CGAffineTransform*) matrix.GetNativeMatrix(), m_windowTransform);
2686 }
2687
2688 // sets the transform of this context
2689 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
2690 {
2691     if ( m_cgContext )
2692     {
2693         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2694         transform = CGAffineTransformInvert( transform ) ;
2695         CGContextConcatCTM( m_cgContext, transform);
2696         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2697     }
2698     else
2699     {
2700         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
2701     }
2702 }
2703
2704 // gets the matrix of this context
2705 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
2706 {
2707     wxGraphicsMatrix m = CreateMatrix();
2708     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
2709         CGContextGetCTM( m_cgContext ));
2710     return m;
2711 }
2712
2713 //
2714 // Renderer
2715 //
2716
2717 //-----------------------------------------------------------------------------
2718 // wxMacCoreGraphicsRenderer declaration
2719 //-----------------------------------------------------------------------------
2720
2721 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2722 {
2723 public :
2724     wxMacCoreGraphicsRenderer() {}
2725
2726     virtual ~wxMacCoreGraphicsRenderer() {}
2727
2728     // Context
2729
2730     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2731     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2732 #if wxUSE_PRINTING_ARCHITECTURE
2733     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
2734 #endif
2735
2736     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2737
2738     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2739
2740     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2741
2742     virtual wxGraphicsContext * CreateMeasuringContext();
2743
2744     // Path
2745
2746     virtual wxGraphicsPath CreatePath();
2747
2748     // Matrix
2749
2750     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2751         wxDouble tx=0.0, wxDouble ty=0.0);
2752
2753
2754     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2755
2756     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2757
2758     virtual wxGraphicsBrush
2759     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2760                               wxDouble x2, wxDouble y2,
2761                               const wxGraphicsGradientStops& stops);
2762
2763     virtual wxGraphicsBrush
2764     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2765                               wxDouble xc, wxDouble yc,
2766                               wxDouble radius,
2767                               const wxGraphicsGradientStops& stops);
2768
2769    // sets the font
2770     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2771
2772     // create a native bitmap representation
2773     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
2774
2775     // create a graphics bitmap from a native bitmap
2776     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
2777
2778     // create a native bitmap representation
2779     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) ;
2780 private :
2781     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2782 } ;
2783
2784 //-----------------------------------------------------------------------------
2785 // wxMacCoreGraphicsRenderer implementation
2786 //-----------------------------------------------------------------------------
2787
2788 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2789
2790 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2791
2792 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2793 {
2794     return &gs_MacCoreGraphicsRenderer;
2795 }
2796
2797 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc )
2798 {
2799     const wxDCImpl* impl = dc.GetImpl();
2800     wxWindowDCImpl *win_impl = wxDynamicCast( impl, wxWindowDCImpl );
2801     if (win_impl)
2802     {
2803         int w, h;
2804         win_impl->GetSize( &w, &h );
2805         CGContextRef cgctx = 0;
2806
2807         wxASSERT_MSG(win_impl->GetWindow(), "Invalid wxWindow in wxMacCoreGraphicsRenderer::CreateContext");
2808         if (win_impl->GetWindow())
2809             cgctx =  (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef());
2810
2811         // having a cgctx being NULL is fine (will be created on demand)
2812         // this is the case for all wxWindowDCs except wxPaintDC
2813         wxMacCoreGraphicsContext *context =
2814             new wxMacCoreGraphicsContext( this, cgctx, (wxDouble) w, (wxDouble) h );
2815         context->EnableOffset(true);
2816         return context;
2817     }
2818     return NULL;
2819 }
2820
2821 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC& dc )
2822 {
2823 #ifdef __WXMAC__
2824     const wxDCImpl* impl = dc.GetImpl();
2825     wxMemoryDCImpl *mem_impl = wxDynamicCast( impl, wxMemoryDCImpl );
2826     if (mem_impl)
2827     {
2828         int w, h;
2829         mem_impl->GetSize( &w, &h );
2830         wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext( this,
2831             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2832         context->EnableOffset(true);
2833         return context;
2834     }
2835 #endif
2836     return NULL;
2837 }
2838
2839 #if wxUSE_PRINTING_ARCHITECTURE
2840 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxPrinterDC& dc )
2841 {
2842 #ifdef __WXMAC__
2843     const wxDCImpl* impl = dc.GetImpl();
2844     wxPrinterDCImpl *print_impl = wxDynamicCast( impl, wxPrinterDCImpl );
2845     if (print_impl)
2846     {
2847         int w, h;
2848         print_impl->GetSize( &w, &h );
2849         return new wxMacCoreGraphicsContext( this,
2850             (CGContextRef)(print_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2851     }
2852 #endif
2853     return NULL;
2854 }
2855 #endif
2856
2857 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2858 {
2859     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2860 }
2861
2862 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2863 {
2864 #if wxOSX_USE_CARBON
2865     wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext(this,(WindowRef)window);
2866     context->EnableOffset(true);
2867     return context;
2868 #else
2869     wxUnusedVar(window);
2870     return NULL;
2871 #endif
2872 }
2873
2874 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2875 {
2876     return new wxMacCoreGraphicsContext(this, window );
2877 }
2878
2879 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2880 {
2881     return new wxMacCoreGraphicsContext(this);
2882 }
2883
2884 // Path
2885
2886 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2887 {
2888     wxGraphicsPath m;
2889     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2890     return m;
2891 }
2892
2893
2894 // Matrix
2895
2896 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2897     wxDouble tx, wxDouble ty)
2898 {
2899     wxGraphicsMatrix m;
2900     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2901     data->Set( a,b,c,d,tx,ty ) ;
2902     m.SetRefData(data);
2903     return m;
2904 }
2905
2906 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2907 {
2908     if ( !pen.IsOk() || pen.GetStyle() == wxTRANSPARENT )
2909         return wxNullGraphicsPen;
2910     else
2911     {
2912         wxGraphicsPen p;
2913         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2914         return p;
2915     }
2916 }
2917
2918 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2919 {
2920     if ( !brush.IsOk() || brush.GetStyle() == wxTRANSPARENT )
2921         return wxNullGraphicsBrush;
2922     else
2923     {
2924         wxGraphicsBrush p;
2925         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2926         return p;
2927     }
2928 }
2929
2930 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
2931 {
2932     if ( bmp.IsOk() )
2933     {
2934         wxGraphicsBitmap p;
2935         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );
2936         return p;
2937     }
2938     else
2939         return wxNullGraphicsBitmap;
2940 }
2941
2942 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
2943 {
2944     if ( bitmap != NULL )
2945     {
2946         wxGraphicsBitmap p;
2947         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , (CGImageRef) bitmap, false ));
2948         return p;
2949     }
2950     else
2951         return wxNullGraphicsBitmap;
2952 }
2953
2954 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h  )
2955 {
2956     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
2957     CGImageRef img = refdata->GetBitmap();
2958     if ( img )
2959     {
2960         wxGraphicsBitmap p;
2961         CGImageRef subimg = CGImageCreateWithImageInRect(img,CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h ));
2962         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , subimg, refdata->IsMonochrome() ) );
2963         return p;
2964     }
2965     else
2966         return wxNullGraphicsBitmap;
2967 }
2968
2969 wxGraphicsBrush
2970 wxMacCoreGraphicsRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2971                                                      wxDouble x2, wxDouble y2,
2972                                                      const wxGraphicsGradientStops& stops)
2973 {
2974     wxGraphicsBrush p;
2975     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2976     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
2977     p.SetRefData(d);
2978     return p;
2979 }
2980
2981 wxGraphicsBrush
2982 wxMacCoreGraphicsRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2983                                                      wxDouble xc, wxDouble yc,
2984                                                      wxDouble radius,
2985                                                      const wxGraphicsGradientStops& stops)
2986 {
2987     wxGraphicsBrush p;
2988     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2989     d->CreateRadialGradientBrush(xo, yo, xc, yc, radius, stops);
2990     p.SetRefData(d);
2991     return p;
2992 }
2993
2994 // sets the font
2995 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2996 {
2997     if ( font.IsOk() )
2998     {
2999         wxGraphicsFont p;
3000         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
3001         return p;
3002     }
3003     else
3004         return wxNullGraphicsFont;
3005 }
3006
3007 //
3008 // CoreGraphics Helper Methods
3009 //
3010
3011 // Data Providers and Consumers
3012
3013 size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
3014 {
3015     CFMutableDataRef data = (CFMutableDataRef) info;
3016     if ( data )
3017     {
3018         CFDataAppendBytes( data, (const UInt8*) bytes, count );
3019     }
3020     return count;
3021 }
3022
3023 void wxMacReleaseCFDataProviderCallback(void *info,
3024                                       const void *WXUNUSED(data),
3025                                       size_t WXUNUSED(count))
3026 {
3027     if ( info )
3028         CFRelease( (CFDataRef) info );
3029 }
3030
3031 void wxMacReleaseCFDataConsumerCallback( void *info )
3032 {
3033     if ( info )
3034         CFRelease( (CFDataRef) info );
3035 }
3036
3037 CGDataProviderRef wxMacCGDataProviderCreateWithCFData( CFDataRef data )
3038 {
3039     if ( data == NULL )
3040         return NULL;
3041
3042     return CGDataProviderCreateWithCFData( data );
3043 }
3044
3045 CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data )
3046 {
3047     if ( data == NULL )
3048         return NULL;
3049
3050     return CGDataConsumerCreateWithCFData( data );
3051 }
3052
3053 void
3054 wxMacReleaseMemoryBufferProviderCallback(void *info,
3055                                          const void * WXUNUSED_UNLESS_DEBUG(data),
3056                                          size_t WXUNUSED(size))
3057 {
3058     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
3059
3060     wxASSERT( data == membuf->GetData() ) ;
3061
3062     delete membuf ;
3063 }
3064
3065 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf )
3066 {
3067     wxMemoryBuffer* b = new wxMemoryBuffer( buf );
3068     if ( b->GetDataLen() == 0 )
3069         return NULL;
3070
3071     return CGDataProviderCreateWithData( b , (const void *) b->GetData() , b->GetDataLen() ,
3072                                                  wxMacReleaseMemoryBufferProviderCallback );
3073 }