src/osx/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/dccg.cpp
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/graphics.h"
  15 #include "wx/private/graphics.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/dcclient.h"
  19     #include "wx/dcmemory.h"
  20     #include "wx/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->Ok() );
 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->Ok() )
 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->Ok() )
 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     // returns the size of the graphics context in device coordinates
1394     virtual void GetSize( wxDouble* width, wxDouble* height);
1395
1396     virtual void StartPage( wxDouble width, wxDouble height );
1397
1398     virtual void EndPage();
1399
1400     virtual void Flush();
1401
1402     // push the current state of the context, ie the transformation matrix on a stack
1403     virtual void PushState();
1404
1405     // pops a stored state from the stack
1406     virtual void PopState();
1407
1408     // clips drawings to the region
1409     virtual void Clip( const wxRegion &region );
1410
1411     // clips drawings to the rect
1412     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1413
1414     // resets the clipping to original extent
1415     virtual void ResetClip();
1416
1417     virtual void * GetNativeContext();
1418
1419     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
1420
1421     virtual bool SetCompositionMode(wxCompositionMode op);
1422
1423     virtual void BeginLayer(wxDouble opacity);
1424
1425     virtual void EndLayer();
1426
1427     //
1428     // transformation
1429     //
1430
1431     // translate
1432     virtual void Translate( wxDouble dx , wxDouble dy );
1433
1434     // scale
1435     virtual void Scale( wxDouble xScale , wxDouble yScale );
1436
1437     // rotate (radians)
1438     virtual void Rotate( wxDouble angle );
1439
1440     // concatenates this transform with the current transform of this context
1441     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1442
1443     // sets the transform of this context
1444     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1445
1446     // gets the matrix of this context
1447     virtual wxGraphicsMatrix GetTransform() const;
1448     //
1449     // setting the paint
1450     //
1451
1452     // strokes along a path with the current pen
1453     virtual void StrokePath( const wxGraphicsPath &path );
1454
1455     // fills a path with the current brush
1456     virtual void FillPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1457
1458     // draws a path by first filling and then stroking
1459     virtual void DrawPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1460
1461     virtual bool ShouldOffset() const
1462     {
1463         int penwidth = 0 ;
1464         if ( !m_pen.IsNull() )
1465         {
1466             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1467             if ( penwidth == 0 )
1468                 penwidth = 1;
1469         }
1470         return ( penwidth % 2 ) == 1;
1471     }
1472     //
1473     // text
1474     //
1475
1476     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1477         wxDouble *descent, wxDouble *externalLeading ) const;
1478
1479     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1480
1481     //
1482     // image support
1483     //
1484
1485     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1486
1487     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1488
1489     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1490
1491     void SetNativeContext( CGContextRef cg );
1492
1493     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsContext)
1494
1495 private:
1496     bool EnsureIsValid();
1497
1498     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
1499     virtual void DoDrawRotatedText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1500
1501     CGContextRef m_cgContext;
1502 #if wxOSX_USE_CARBON
1503     WindowRef m_windowRef;
1504 #else
1505     WXWidget m_view;
1506 #endif
1507     bool m_contextSynthesized;
1508     CGAffineTransform m_windowTransform;
1509     wxDouble m_width;
1510     wxDouble m_height;
1511     bool m_invisible;
1512
1513 #if wxOSX_USE_COCOA_OR_CARBON
1514     wxCFRef<HIShapeRef> m_clipRgn;
1515 #endif
1516 };
1517
1518 //-----------------------------------------------------------------------------
1519 // device context implementation
1520 //
1521 // more and more of the dc functionality should be implemented by calling
1522 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1523 // also coordinate conversions should be moved to native matrix ops
1524 //-----------------------------------------------------------------------------
1525
1526 // we always stock two context states, one at entry, to be able to preserve the
1527 // state we were called with, the other one after changing to HI Graphics orientation
1528 // (this one is used for getting back clippings etc)
1529
1530 //-----------------------------------------------------------------------------
1531 // wxMacCoreGraphicsContext implementation
1532 //-----------------------------------------------------------------------------
1533
1534 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1535
1536 class wxQuartzOffsetHelper
1537 {
1538 public :
1539     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1540     {
1541         m_cg = cg;
1542         m_offset = offset;
1543         if ( m_offset )
1544         {
1545             m_userOffset = CGContextConvertSizeToUserSpace( m_cg, CGSizeMake( 0.5 , 0.5 ) );
1546             CGContextTranslateCTM( m_cg, m_userOffset.width , m_userOffset.height );
1547         }
1548         else
1549         {
1550             m_userOffset = CGSizeMake(0.0, 0.0);
1551         }
1552
1553     }
1554     ~wxQuartzOffsetHelper( )
1555     {
1556         if ( m_offset )
1557             CGContextTranslateCTM( m_cg, -m_userOffset.width , -m_userOffset.height );
1558     }
1559 public :
1560     CGSize m_userOffset;
1561     CGContextRef m_cg;
1562     bool m_offset;
1563 } ;
1564
1565 void wxMacCoreGraphicsContext::Init()
1566 {
1567     m_cgContext = NULL;
1568     m_contextSynthesized = false;
1569     m_width = 0;
1570     m_height = 0;
1571 #if wxOSX_USE_CARBON
1572     m_windowRef = NULL;
1573 #endif
1574 #if wxOSX_USE_COCOA_OR_IPHONE
1575     m_view = NULL;
1576 #endif
1577     m_invisible = false;
1578 }
1579
1580 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1581 {
1582     Init();
1583     SetNativeContext(cgcontext);
1584     m_width = width;
1585     m_height = height;
1586 }
1587
1588 #if wxOSX_USE_CARBON
1589 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1590 {
1591     Init();
1592     m_windowRef = window;
1593 }
1594 #endif
1595
1596 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1597 {
1598     Init();
1599
1600     wxSize sz = window->GetSize();
1601     m_width = sz.x;
1602     m_height = sz.y;
1603
1604 #if wxOSX_USE_COCOA_OR_IPHONE
1605     m_view = window->GetHandle();
1606
1607 #if wxOSX_USE_COCOA
1608     if ( ! window->GetPeer()->IsFlipped() )
1609     {
1610         m_windowTransform = CGAffineTransformMakeTranslation( 0 , m_height );
1611         m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1612     }
1613     else
1614 #endif
1615     {
1616         m_windowTransform = CGAffineTransformIdentity;
1617     }
1618 #else
1619     int originX , originY;
1620     originX = originY = 0;
1621     Rect bounds = { 0,0,0,0 };
1622     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1623     window->MacWindowToRootWindow( &originX , &originY );
1624     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1625     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1626     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1627     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1628 #endif
1629 }
1630
1631 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1632 {
1633     Init();
1634 }
1635
1636 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1637 {
1638     Init();
1639     wxLogDebug(wxT("Illegal Constructor called"));
1640 }
1641
1642 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1643 {
1644     SetNativeContext(NULL);
1645 }
1646
1647 void wxMacCoreGraphicsContext::GetSize( wxDouble* width, wxDouble* height)
1648 {
1649     *width = m_width;
1650     *height = m_height;
1651 }
1652
1653
1654 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1655 {
1656     CGRect r;
1657     if ( width != 0 && height != 0)
1658         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) width  , (CGFloat) height );
1659     else
1660         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) m_width  , (CGFloat) m_height );
1661
1662     CGContextBeginPage(m_cgContext,  &r );
1663 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1664 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1665 }
1666
1667 void wxMacCoreGraphicsContext::EndPage()
1668 {
1669     CGContextEndPage(m_cgContext);
1670 }
1671
1672 void wxMacCoreGraphicsContext::Flush()
1673 {
1674     CGContextFlush(m_cgContext);
1675 }
1676
1677 bool wxMacCoreGraphicsContext::EnsureIsValid()
1678 {
1679     if ( !m_cgContext )
1680     {
1681         if (m_invisible)
1682             return false;
1683
1684 #if wxOSX_USE_COCOA
1685         if ( wxOSXLockFocus(m_view) )
1686         {
1687             m_cgContext = wxOSXGetContextFromCurrentContext();
1688             wxASSERT_MSG( m_cgContext != NULL, wxT("Unable to retrieve drawing context from View"));
1689         }
1690         else
1691         {
1692             m_invisible = true;
1693         }
1694 #endif
1695 #if wxOSX_USE_IPHONE
1696         m_cgContext = wxOSXGetContextFromCurrentContext();
1697         if ( m_cgContext == NULL )
1698         {
1699             m_invisible = true;
1700         }
1701 #endif
1702 #if wxOSX_USE_CARBON
1703         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1704         if ( status != noErr )
1705         {
1706             wxFAIL_MSG("Cannot nest wxDCs on the same window");
1707         }
1708 #endif
1709         if ( m_cgContext )
1710         {
1711             CGContextSaveGState( m_cgContext );
1712             CGContextConcatCTM( m_cgContext, m_windowTransform );
1713             CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
1714             m_contextSynthesized = true;
1715 #if wxOSX_USE_COCOA_OR_CARBON
1716             if ( m_clipRgn.get() )
1717             {
1718                 // the clip region is in device coordinates, so we convert this again to user coordinates
1719                 wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
1720                 CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1721                 HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1722                 // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1723                 if ( HIShapeIsEmpty(hishape))
1724                 {
1725                     CGRect empty = CGRectMake( 0,0,0,0 );
1726                     CGContextClipToRect( m_cgContext, empty );
1727                 }
1728                 else
1729                 {
1730                     HIShapeReplacePathInCGContext( hishape, m_cgContext );
1731                     CGContextClip( m_cgContext );
1732                 }
1733             }
1734 #endif
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::SetCompositionMode(wxCompositionMode op)
1785 {
1786     if (!EnsureIsValid())
1787         return true;
1788
1789     if ( m_composition == op )
1790         return true;
1791
1792     m_composition = op;
1793
1794     if (m_composition == wxCOMPOSITION_DEST)
1795         return true;
1796
1797 #if wxOSX_USE_COCOA_OR_CARBON
1798     if ( UMAGetSystemVersion() < 0x1060 )
1799     {
1800         CGCompositeOperation cop = kCGCompositeOperationSourceOver;
1801         CGBlendMode mode = kCGBlendModeNormal;
1802         switch( op )
1803         {
1804         case wxCOMPOSITION_CLEAR:
1805             cop = kCGCompositeOperationClear;
1806             break;
1807         case wxCOMPOSITION_SOURCE:
1808             cop = kCGCompositeOperationCopy;
1809             break;
1810         case wxCOMPOSITION_OVER:
1811             mode = kCGBlendModeNormal;
1812             break;
1813         case wxCOMPOSITION_IN:
1814             cop = kCGCompositeOperationSourceIn;
1815             break;
1816         case wxCOMPOSITION_OUT:
1817             cop = kCGCompositeOperationSourceOut;
1818             break;
1819         case wxCOMPOSITION_ATOP:
1820             cop = kCGCompositeOperationSourceAtop;
1821             break;
1822         case wxCOMPOSITION_DEST_OVER:
1823             cop = kCGCompositeOperationDestinationOver;
1824             break;
1825         case wxCOMPOSITION_DEST_IN:
1826             cop = kCGCompositeOperationDestinationIn;
1827             break;
1828         case wxCOMPOSITION_DEST_OUT:
1829             cop = kCGCompositeOperationDestinationOut;
1830             break;
1831         case wxCOMPOSITION_DEST_ATOP:
1832            cop = kCGCompositeOperationDestinationAtop;
1833             break;
1834         case wxCOMPOSITION_XOR:
1835             cop = kCGCompositeOperationXOR;
1836             break;
1837 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1838         case wxCOMPOSITION_ADD:
1839             mode = kCGBlendModePlusLighter ;
1840             break;
1841 #endif
1842         default:
1843             return false;
1844         }
1845         if ( cop != kCGCompositeOperationSourceOver )
1846             CGContextSetCompositeOperation(m_cgContext, cop);
1847         else
1848             CGContextSetBlendMode(m_cgContext, mode);
1849     }
1850 #endif
1851 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1852     else
1853     {
1854         CGBlendMode mode = kCGBlendModeNormal;
1855         switch( op )
1856         {
1857         case wxCOMPOSITION_CLEAR:
1858             mode = kCGBlendModeClear;
1859             break;
1860         case wxCOMPOSITION_SOURCE:
1861             mode = kCGBlendModeCopy;
1862             break;
1863         case wxCOMPOSITION_OVER:
1864             mode = kCGBlendModeNormal;
1865             break;
1866         case wxCOMPOSITION_IN:
1867             mode = kCGBlendModeSourceIn;
1868             break;
1869         case wxCOMPOSITION_OUT:
1870             mode = kCGBlendModeSourceOut;
1871             break;
1872         case wxCOMPOSITION_ATOP:
1873             mode = kCGBlendModeSourceAtop;
1874             break;
1875         case wxCOMPOSITION_DEST_OVER:
1876             mode = kCGBlendModeDestinationOver;
1877             break;
1878         case wxCOMPOSITION_DEST_IN:
1879             mode = kCGBlendModeDestinationIn;
1880             break;
1881         case wxCOMPOSITION_DEST_OUT:
1882             mode = kCGBlendModeDestinationOut;
1883             break;
1884         case wxCOMPOSITION_DEST_ATOP:
1885            mode = kCGBlendModeDestinationAtop;
1886             break;
1887         case wxCOMPOSITION_XOR:
1888             mode = kCGBlendModeXOR;
1889             break;
1890
1891         case wxCOMPOSITION_ADD:
1892             mode = kCGBlendModePlusLighter ;
1893             break;
1894         default:
1895             return false;
1896         }
1897         CGContextSetBlendMode(m_cgContext, mode);
1898     }
1899 #endif
1900     return true;
1901 }
1902
1903 void wxMacCoreGraphicsContext::BeginLayer(wxDouble opacity)
1904 {
1905     CGContextSaveGState(m_cgContext);
1906     CGContextSetAlpha(m_cgContext, (CGFloat) opacity);
1907     CGContextBeginTransparencyLayer(m_cgContext, 0);
1908 }
1909
1910 void wxMacCoreGraphicsContext::EndLayer()
1911 {
1912     CGContextEndTransparencyLayer(m_cgContext);
1913     CGContextRestoreGState(m_cgContext);
1914 }
1915
1916 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1917 {
1918 #if wxOSX_USE_COCOA_OR_CARBON
1919     if( m_cgContext )
1920     {
1921         wxCFRef<HIShapeRef> shape = wxCFRefFromGet(region.GetWXHRGN());
1922         // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1923         if ( HIShapeIsEmpty(shape))
1924         {
1925             CGRect empty = CGRectMake( 0,0,0,0 );
1926             CGContextClipToRect( m_cgContext, empty );
1927         }
1928         else
1929         {
1930             HIShapeReplacePathInCGContext( shape, m_cgContext );
1931             CGContextClip( m_cgContext );
1932         }
1933     }
1934     else
1935     {
1936         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1937         // to regions we try at least to have correct translations
1938         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
1939
1940         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1941         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1942         m_clipRgn.reset(mutableShape);
1943     }
1944 #else
1945     // allow usage as measuring context
1946     // wxASSERT_MSG( m_cgContext != NULL, "Needs a valid context for clipping" );
1947 #endif
1948 }
1949
1950 // clips drawings to the rect
1951 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1952 {
1953     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
1954     if ( m_cgContext )
1955     {
1956         CGContextClipToRect( m_cgContext, r );
1957     }
1958     else
1959     {
1960 #if wxOSX_USE_COCOA_OR_CARBON
1961         // the clipping itself must be stored as device coordinates, otherwise
1962         // we cannot apply it back correctly
1963         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1964         m_clipRgn.reset(HIShapeCreateWithRect(&r));
1965 #else
1966     // allow usage as measuring context
1967     // wxFAIL_MSG( "Needs a valid context for clipping" );
1968 #endif
1969     }
1970 }
1971
1972     // resets the clipping to original extent
1973 void wxMacCoreGraphicsContext::ResetClip()
1974 {
1975     if ( m_cgContext )
1976     {
1977         // there is no way for clearing the clip, we can only revert to the stored
1978         // state, but then we have to make sure everything else is NOT restored
1979         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1980         CGContextRestoreGState( m_cgContext );
1981         CGContextSaveGState( m_cgContext );
1982         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1983         transformNew = CGAffineTransformInvert( transformNew ) ;
1984         CGContextConcatCTM( m_cgContext, transformNew);
1985         CGContextConcatCTM( m_cgContext, transform);
1986     }
1987     else
1988     {
1989 #if wxOSX_USE_COCOA_OR_CARBON
1990         m_clipRgn.reset();
1991 #else
1992     // allow usage as measuring context
1993     // wxFAIL_MSG( "Needs a valid context for clipping" );
1994 #endif
1995     }
1996 }
1997
1998 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1999 {
2000     if ( m_pen.IsNull() )
2001         return ;
2002
2003     if (!EnsureIsValid())
2004         return;
2005
2006     if (m_composition == wxCOMPOSITION_DEST)
2007         return;
2008
2009     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2010
2011     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2012     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2013     CGContextStrokePath( m_cgContext );
2014 }
2015
2016 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2017 {
2018     if (!EnsureIsValid())
2019         return;
2020
2021     if (m_composition == wxCOMPOSITION_DEST)
2022         return;
2023
2024     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2025     {
2026         // when using shading, we cannot draw pen and brush at the same time
2027         // revert to the base implementation of first filling and then stroking
2028         wxGraphicsContext::DrawPath( path, fillStyle );
2029         return;
2030     }
2031
2032     CGPathDrawingMode mode = kCGPathFill ;
2033     if ( m_brush.IsNull() )
2034     {
2035         if ( m_pen.IsNull() )
2036             return;
2037         else
2038             mode = kCGPathStroke;
2039     }
2040     else
2041     {
2042         if ( m_pen.IsNull() )
2043         {
2044             if ( fillStyle == wxODDEVEN_RULE )
2045                 mode = kCGPathEOFill;
2046             else
2047                 mode = kCGPathFill;
2048         }
2049         else
2050         {
2051             if ( fillStyle == wxODDEVEN_RULE )
2052                 mode = kCGPathEOFillStroke;
2053             else
2054                 mode = kCGPathFillStroke;
2055         }
2056     }
2057
2058     if ( !m_brush.IsNull() )
2059         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2060     if ( !m_pen.IsNull() )
2061         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2062
2063     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2064
2065     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2066     CGContextDrawPath( m_cgContext , mode );
2067 }
2068
2069 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2070 {
2071     if ( m_brush.IsNull() )
2072         return;
2073
2074     if (!EnsureIsValid())
2075         return;
2076
2077     if (m_composition == wxCOMPOSITION_DEST)
2078         return;
2079
2080     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2081     {
2082         CGContextSaveGState( m_cgContext );
2083         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2084         CGContextClip( m_cgContext );
2085         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2086         CGContextRestoreGState( m_cgContext);
2087     }
2088     else
2089     {
2090         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2091         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2092         if ( fillStyle == wxODDEVEN_RULE )
2093             CGContextEOFillPath( m_cgContext );
2094         else
2095             CGContextFillPath( m_cgContext );
2096     }
2097 }
2098
2099 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
2100 {
2101     // we allow either setting or clearing but not replacing
2102     wxASSERT( m_cgContext == NULL || cg == NULL );
2103
2104     if ( m_cgContext )
2105     {
2106         CGContextRestoreGState( m_cgContext );
2107         CGContextRestoreGState( m_cgContext );
2108         if ( m_contextSynthesized )
2109         {
2110 #if wxOSX_USE_CARBON
2111             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
2112 #endif
2113 #if wxOSX_USE_COCOA
2114             wxOSXUnlockFocus(m_view);
2115 #endif
2116         }
2117         else
2118             CGContextRelease(m_cgContext);
2119     }
2120
2121     m_cgContext = cg;
2122
2123     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
2124     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
2125     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
2126     // for this one operation.
2127
2128     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
2129     // can be removed.
2130     if (m_cgContext)
2131     {
2132         CGContextRetain(m_cgContext);
2133         CGContextSaveGState( m_cgContext );
2134         CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
2135         CGContextSaveGState( m_cgContext );
2136         m_contextSynthesized = false;
2137     }
2138 }
2139
2140 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
2141 {
2142     if ( m_cgContext )
2143         CGContextTranslateCTM( m_cgContext, (CGFloat) dx, (CGFloat) dy );
2144     else
2145         m_windowTransform = CGAffineTransformTranslate(m_windowTransform, (CGFloat) dx, (CGFloat) dy);
2146 }
2147
2148 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
2149 {
2150     if ( m_cgContext )
2151         CGContextScaleCTM( m_cgContext , (CGFloat) xScale , (CGFloat) yScale );
2152     else
2153         m_windowTransform = CGAffineTransformScale(m_windowTransform, (CGFloat) xScale, (CGFloat) yScale);
2154 }
2155
2156 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
2157 {
2158     if ( m_cgContext )
2159         CGContextRotateCTM( m_cgContext , (CGFloat) angle );
2160     else
2161         m_windowTransform = CGAffineTransformRotate(m_windowTransform, (CGFloat) angle);
2162 }
2163
2164 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2165 {
2166     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
2167     DrawBitmap(bitmap, x, y, w, h);
2168 }
2169
2170 void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2171 {
2172     if (!EnsureIsValid())
2173         return;
2174
2175     if (m_composition == wxCOMPOSITION_DEST)
2176         return;
2177
2178 #ifdef __WXMAC__
2179     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
2180     CGImageRef image = refdata->GetBitmap();
2181     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2182     if ( refdata->IsMonochrome() == 1 )
2183     {
2184         // is is a mask, the '1' in the mask tell where to draw the current brush
2185         if (  !m_brush.IsNull() )
2186         {
2187             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2188             {
2189                 // TODO clip to mask
2190             /*
2191                 CGContextSaveGState( m_cgContext );
2192                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2193                 CGContextClip( m_cgContext );
2194                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2195                 CGContextRestoreGState( m_cgContext);
2196             */
2197             }
2198             else
2199             {
2200                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2201                 wxMacDrawCGImage( m_cgContext , &r , image );
2202             }
2203         }
2204     }
2205     else
2206     {
2207         wxMacDrawCGImage( m_cgContext , &r , image );
2208     }
2209 #endif
2210 }
2211
2212 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2213 {
2214     if (!EnsureIsValid())
2215         return;
2216
2217     if (m_composition == wxCOMPOSITION_DEST)
2218         return;
2219
2220     CGRect r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) w , (CGFloat) h );
2221     CGContextSaveGState( m_cgContext );
2222     CGContextTranslateCTM( m_cgContext,(CGFloat) x ,(CGFloat) (y + h) );
2223     CGContextScaleCTM( m_cgContext, 1, -1 );
2224 #if wxOSX_USE_COCOA_OR_CARBON
2225     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
2226         NULL , kPlotIconRefNormalFlags , icon.GetHICON() );
2227 #endif
2228     CGContextRestoreGState( m_cgContext );
2229 }
2230
2231 void wxMacCoreGraphicsContext::PushState()
2232 {
2233     if (!EnsureIsValid())
2234         return;
2235
2236     CGContextSaveGState( m_cgContext );
2237 }
2238
2239 void wxMacCoreGraphicsContext::PopState()
2240 {
2241     if (!EnsureIsValid())
2242         return;
2243
2244     CGContextRestoreGState( m_cgContext );
2245 }
2246
2247 void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDouble y )
2248 {
2249     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2250
2251     if (!EnsureIsValid())
2252         return;
2253
2254     if (m_composition == wxCOMPOSITION_DEST)
2255         return;
2256
2257 #if wxOSX_USE_CORE_TEXT
2258     if ( UMAGetSystemVersion() >= 0x1050 )
2259     {
2260         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2261         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2262         CTFontRef font = fref->OSXGetCTFont();
2263         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2264         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
2265         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
2266          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
2267         CFTypeRef values[] = { font, col, underlined };
2268         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2269                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2270         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2271         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2272
2273         y += CTFontGetAscent(font);
2274
2275         CGContextSaveGState(m_cgContext);
2276         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2277         CGContextScaleCTM(m_cgContext, 1, -1);
2278         CGContextSetTextPosition(m_cgContext, 0, 0);
2279         CTLineDraw( line, m_cgContext );
2280         CGContextRestoreGState(m_cgContext);
2281         CFRelease( col );
2282         return;
2283     }
2284 #endif
2285 #if wxOSX_USE_ATSU_TEXT
2286     {
2287         DrawText(str, x, y, 0.0);
2288         return;
2289     }
2290 #endif
2291 #if wxOSX_USE_IPHONE
2292     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2293
2294     CGContextSaveGState(m_cgContext);
2295
2296     CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2297     CGContextSetTextDrawingMode (m_cgContext, kCGTextFill);
2298     CGContextSetFillColorWithColor( m_cgContext, col );
2299
2300     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2301     DrawTextInContext( m_cgContext, CGPointMake( x, y ), fref->GetUIFont() , text.AsNSString() );
2302
2303     CGContextRestoreGState(m_cgContext);
2304     CFRelease( col );
2305 #endif
2306 }
2307
2308 void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
2309                                                  wxDouble x, wxDouble y,
2310                                                  wxDouble angle)
2311 {
2312     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2313
2314     if (!EnsureIsValid())
2315         return;
2316
2317     if (m_composition == wxCOMPOSITION_DEST)
2318         return;
2319
2320 #if wxOSX_USE_CORE_TEXT
2321     if ( UMAGetSystemVersion() >= 0x1050 )
2322     {
2323         // default implementation takes care of rotation and calls non rotated DrawText afterwards
2324         wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2325         return;
2326     }
2327 #endif
2328 #if wxOSX_USE_ATSU_TEXT
2329     {
2330         OSStatus status = noErr;
2331         ATSUTextLayout atsuLayout;
2332         wxMacUniCharBuffer unibuf( str );
2333         UniCharCount chars = unibuf.GetChars();
2334
2335         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2336         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2337                                                    &chars , &style , &atsuLayout );
2338
2339         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
2340
2341         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2342         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2343
2344         int iAngle = int( angle * RAD2DEG );
2345         if ( abs(iAngle) > 0 )
2346         {
2347             Fixed atsuAngle = IntToFixed( iAngle );
2348             ATSUAttributeTag atsuTags[] =
2349             {
2350                 kATSULineRotationTag ,
2351             };
2352             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2353             {
2354                 sizeof( Fixed ) ,
2355             };
2356             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2357             {
2358                 &atsuAngle ,
2359             };
2360             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2361                                              atsuTags, atsuSizes, atsuValues );
2362         }
2363
2364         {
2365             ATSUAttributeTag atsuTags[] =
2366             {
2367                 kATSUCGContextTag ,
2368             };
2369             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2370             {
2371                 sizeof( CGContextRef ) ,
2372             };
2373             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2374             {
2375                 &m_cgContext ,
2376             };
2377             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2378                                              atsuTags, atsuSizes, atsuValues );
2379         }
2380
2381         ATSUTextMeasurement textBefore, textAfter;
2382         ATSUTextMeasurement ascent, descent;
2383
2384         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2385                                             &textBefore , &textAfter, &ascent , &descent );
2386
2387         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2388
2389         Rect rect;
2390         x += (int)(sin(angle) * FixedToFloat(ascent));
2391         y += (int)(cos(angle) * FixedToFloat(ascent));
2392
2393         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2394                                         IntToFixed(x) , IntToFixed(y) , &rect );
2395         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2396
2397         CGContextSaveGState(m_cgContext);
2398         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2399         CGContextScaleCTM(m_cgContext, 1, -1);
2400         status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2401                                 IntToFixed(0) , IntToFixed(0) );
2402
2403         wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
2404
2405         CGContextRestoreGState(m_cgContext);
2406
2407         ::ATSUDisposeTextLayout(atsuLayout);
2408
2409         return;
2410     }
2411 #endif
2412 #if wxOSX_USE_IPHONE
2413     // default implementation takes care of rotation and calls non rotated DrawText afterwards
2414     wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2415 #endif
2416 }
2417
2418 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2419                             wxDouble *descent, wxDouble *externalLeading ) const
2420 {
2421     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::GetTextExtent - no valid font set") );
2422
2423     if ( width )
2424         *width = 0;
2425     if ( height )
2426         *height = 0;
2427     if ( descent )
2428         *descent = 0;
2429     if ( externalLeading )
2430         *externalLeading = 0;
2431
2432     if (str.empty())
2433         return;
2434
2435 #if wxOSX_USE_CORE_TEXT
2436     if ( UMAGetSystemVersion() >= 0x1050 )
2437     {
2438         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2439         CTFontRef font = fref->OSXGetCTFont();
2440
2441         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2442         CFStringRef keys[] = { kCTFontAttributeName  };
2443         CFTypeRef values[] = { font };
2444         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2445                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2446         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2447         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2448
2449         CGFloat a, d, l, w;
2450         w = CTLineGetTypographicBounds(line, &a, &d, &l);
2451
2452         if ( height )
2453             *height = a+d+l;
2454         if ( descent )
2455             *descent = d;
2456         if ( externalLeading )
2457             *externalLeading = l;
2458         if ( width )
2459             *width = w;
2460         return;
2461     }
2462 #endif
2463 #if wxOSX_USE_ATSU_TEXT
2464     {
2465         OSStatus status = noErr;
2466
2467         ATSUTextLayout atsuLayout;
2468         wxMacUniCharBuffer unibuf( str );
2469         UniCharCount chars = unibuf.GetChars();
2470
2471         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2472         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2473                                                    &chars , &style , &atsuLayout );
2474
2475         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2476
2477         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2478         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2479
2480         ATSUTextMeasurement textBefore, textAfter;
2481         ATSUTextMeasurement textAscent, textDescent;
2482
2483         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2484                                             &textBefore , &textAfter, &textAscent , &textDescent );
2485
2486         if ( height )
2487             *height = FixedToFloat(textAscent + textDescent);
2488         if ( descent )
2489             *descent = FixedToFloat(textDescent);
2490         if ( externalLeading )
2491             *externalLeading = 0;
2492         if ( width )
2493             *width = FixedToFloat(textAfter - textBefore);
2494
2495         ::ATSUDisposeTextLayout(atsuLayout);
2496
2497         return;
2498     }
2499 #endif
2500 #if wxOSX_USE_IPHONE
2501     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2502
2503     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2504     CGSize sz = MeasureTextInContext( fref->GetUIFont() , text.AsNSString() );
2505
2506     if ( height )
2507         *height = sz.height;
2508         /*
2509     if ( descent )
2510         *descent = FixedToFloat(textDescent);
2511     if ( externalLeading )
2512         *externalLeading = 0;
2513         */
2514     if ( width )
2515         *width = sz.width;
2516 #endif
2517 }
2518
2519 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2520 {
2521     widths.Empty();
2522     widths.Add(0, text.length());
2523
2524     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2525
2526     if (text.empty())
2527         return;
2528
2529 #if wxOSX_USE_CORE_TEXT
2530     {
2531         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2532         CTFontRef font = fref->OSXGetCTFont();
2533
2534         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
2535         CFStringRef keys[] = { kCTFontAttributeName  };
2536         CFTypeRef values[] = { font };
2537         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2538                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2539         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, t, attributes) );
2540         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2541
2542         int chars = text.length();
2543         for ( int pos = 0; pos < (int)chars; pos ++ )
2544         {
2545             widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL );
2546         }
2547
2548         return;
2549     }
2550 #endif
2551 #if wxOSX_USE_ATSU_TEXT
2552     {
2553         OSStatus status = noErr;
2554         ATSUTextLayout atsuLayout;
2555         wxMacUniCharBuffer unibuf( text );
2556         UniCharCount chars = unibuf.GetChars();
2557
2558         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2559         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2560                                           &chars , &style , &atsuLayout );
2561
2562         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2563
2564         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2565         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2566
2567 // new implementation from JS, keep old one just in case
2568 #if 0
2569         for ( int pos = 0; pos < (int)chars; pos ++ )
2570         {
2571             unsigned long actualNumberOfBounds = 0;
2572             ATSTrapezoid glyphBounds;
2573
2574             // We get a single bound, since the text should only require one. If it requires more, there is an issue
2575             OSStatus result;
2576             result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
2577                                         kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
2578             if (result != noErr || actualNumberOfBounds != 1 )
2579                 return;
2580
2581             widths[pos] = FixedToFloat( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
2582             //unsigned char uch = s[i];
2583         }
2584 #else
2585         ATSLayoutRecord *layoutRecords = NULL;
2586         ItemCount glyphCount = 0;
2587
2588         // Get the glyph extents
2589         OSStatus err = ::ATSUDirectGetLayoutDataArrayPtrFromTextLayout(atsuLayout,
2590                                                                        0,
2591                                                                        kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2592                                                                        (void **)
2593                                                                        &layoutRecords,
2594                                                                        &glyphCount);
2595         wxASSERT(glyphCount == (text.length()+1));
2596
2597         if ( err == noErr && glyphCount == (text.length()+1))
2598         {
2599             for ( int pos = 1; pos < (int)glyphCount ; pos ++ )
2600             {
2601                 widths[pos-1] = FixedToFloat( layoutRecords[pos].realPos );
2602             }
2603         }
2604
2605         ::ATSUDirectReleaseLayoutDataArrayPtr(NULL,
2606                                               kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2607                                               (void **) &layoutRecords);
2608 #endif
2609         ::ATSUDisposeTextLayout(atsuLayout);
2610     }
2611 #endif
2612 #if wxOSX_USE_IPHONE
2613     // TODO core graphics text implementation here
2614 #endif
2615 }
2616
2617 void * wxMacCoreGraphicsContext::GetNativeContext()
2618 {
2619     return m_cgContext;
2620 }
2621
2622 // concatenates this transform with the current transform of this context
2623 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
2624 {
2625     if ( m_cgContext )
2626         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2627     else
2628         m_windowTransform = CGAffineTransformConcat(*(CGAffineTransform*) matrix.GetNativeMatrix(), m_windowTransform);
2629 }
2630
2631 // sets the transform of this context
2632 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
2633 {
2634     if ( m_cgContext )
2635     {
2636         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2637         transform = CGAffineTransformInvert( transform ) ;
2638         CGContextConcatCTM( m_cgContext, transform);
2639         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2640     }
2641     else
2642     {
2643         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
2644     }
2645 }
2646
2647 // gets the matrix of this context
2648 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
2649 {
2650     wxGraphicsMatrix m = CreateMatrix();
2651     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
2652         CGContextGetCTM( m_cgContext ));
2653     return m;
2654 }
2655
2656 //
2657 // Renderer
2658 //
2659
2660 //-----------------------------------------------------------------------------
2661 // wxMacCoreGraphicsRenderer declaration
2662 //-----------------------------------------------------------------------------
2663
2664 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2665 {
2666 public :
2667     wxMacCoreGraphicsRenderer() {}
2668
2669     virtual ~wxMacCoreGraphicsRenderer() {}
2670
2671     // Context
2672
2673     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2674     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2675 #if wxUSE_PRINTING_ARCHITECTURE
2676     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
2677 #endif
2678
2679     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2680
2681     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2682
2683     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2684
2685     virtual wxGraphicsContext * CreateMeasuringContext();
2686
2687     // Path
2688
2689     virtual wxGraphicsPath CreatePath();
2690
2691     // Matrix
2692
2693     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2694         wxDouble tx=0.0, wxDouble ty=0.0);
2695
2696
2697     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2698
2699     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2700
2701     virtual wxGraphicsBrush
2702     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2703                               wxDouble x2, wxDouble y2,
2704                               const wxGraphicsGradientStops& stops);
2705
2706     virtual wxGraphicsBrush
2707     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2708                               wxDouble xc, wxDouble yc,
2709                               wxDouble radius,
2710                               const wxGraphicsGradientStops& stops);
2711
2712    // sets the font
2713     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2714
2715     // create a native bitmap representation
2716     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
2717
2718     // create a graphics bitmap from a native bitmap
2719     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
2720
2721     // create a native bitmap representation
2722     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) ;
2723 private :
2724     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2725 } ;
2726
2727 //-----------------------------------------------------------------------------
2728 // wxMacCoreGraphicsRenderer implementation
2729 //-----------------------------------------------------------------------------
2730
2731 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2732
2733 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2734
2735 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2736 {
2737     return &gs_MacCoreGraphicsRenderer;
2738 }
2739
2740 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc )
2741 {
2742     const wxDCImpl* impl = dc.GetImpl();
2743     wxWindowDCImpl *win_impl = wxDynamicCast( impl, wxWindowDCImpl );
2744     if (win_impl)
2745     {
2746         int w, h;
2747         win_impl->GetSize( &w, &h );
2748         CGContextRef cgctx = 0;
2749
2750         wxASSERT_MSG(win_impl->GetWindow(), "Invalid wxWindow in wxMacCoreGraphicsRenderer::CreateContext");
2751         if (win_impl->GetWindow())
2752             cgctx =  (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef());
2753
2754         // having a cgctx being NULL is fine (will be created on demand)
2755         // this is the case for all wxWindowDCs except wxPaintDC
2756         return new wxMacCoreGraphicsContext( this, cgctx, (wxDouble) w, (wxDouble) h );
2757     }
2758     return NULL;
2759 }
2760
2761 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC& dc )
2762 {
2763 #ifdef __WXMAC__
2764     const wxDCImpl* impl = dc.GetImpl();
2765     wxMemoryDCImpl *mem_impl = wxDynamicCast( impl, wxMemoryDCImpl );
2766     if (mem_impl)
2767     {
2768         int w, h;
2769         mem_impl->GetSize( &w, &h );
2770         return new wxMacCoreGraphicsContext( this,
2771             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2772     }
2773 #endif
2774     return NULL;
2775 }
2776
2777 #if wxUSE_PRINTING_ARCHITECTURE
2778 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxPrinterDC& dc )
2779 {
2780 #ifdef __WXMAC__
2781     const wxDCImpl* impl = dc.GetImpl();
2782     wxPrinterDCImpl *print_impl = wxDynamicCast( impl, wxPrinterDCImpl );
2783     if (print_impl)
2784     {
2785         int w, h;
2786         print_impl->GetSize( &w, &h );
2787         return new wxMacCoreGraphicsContext( this,
2788             (CGContextRef)(print_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2789     }
2790 #endif
2791     return NULL;
2792 }
2793 #endif
2794
2795 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2796 {
2797     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2798 }
2799
2800 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2801 {
2802 #if wxOSX_USE_CARBON
2803     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
2804 #else
2805     wxUnusedVar(window);
2806     return NULL;
2807 #endif
2808 }
2809
2810 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2811 {
2812     return new wxMacCoreGraphicsContext(this, window );
2813 }
2814
2815 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2816 {
2817     return new wxMacCoreGraphicsContext(this);
2818 }
2819
2820 // Path
2821
2822 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2823 {
2824     wxGraphicsPath m;
2825     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2826     return m;
2827 }
2828
2829
2830 // Matrix
2831
2832 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2833     wxDouble tx, wxDouble ty)
2834 {
2835     wxGraphicsMatrix m;
2836     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2837     data->Set( a,b,c,d,tx,ty ) ;
2838     m.SetRefData(data);
2839     return m;
2840 }
2841
2842 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2843 {
2844     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
2845         return wxNullGraphicsPen;
2846     else
2847     {
2848         wxGraphicsPen p;
2849         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2850         return p;
2851     }
2852 }
2853
2854 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2855 {
2856     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2857         return wxNullGraphicsBrush;
2858     else
2859     {
2860         wxGraphicsBrush p;
2861         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2862         return p;
2863     }
2864 }
2865
2866 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
2867 {
2868     if ( bmp.Ok() )
2869     {
2870         wxGraphicsBitmap p;
2871         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );
2872         return p;
2873     }
2874     else
2875         return wxNullGraphicsBitmap;
2876 }
2877
2878 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
2879 {
2880     if ( bitmap != NULL )
2881     {
2882         wxGraphicsBitmap p;
2883         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , (CGImageRef) bitmap, false ));
2884         return p;
2885     }
2886     else
2887         return wxNullGraphicsBitmap;
2888 }
2889
2890 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h  )
2891 {
2892     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
2893     CGImageRef img = refdata->GetBitmap();
2894     if ( img )
2895     {
2896         wxGraphicsBitmap p;
2897         CGImageRef subimg = CGImageCreateWithImageInRect(img,CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h ));
2898         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , subimg, refdata->IsMonochrome() ) );
2899         return p;
2900     }
2901     else
2902         return wxNullGraphicsBitmap;
2903 }
2904
2905 wxGraphicsBrush
2906 wxMacCoreGraphicsRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2907                                                      wxDouble x2, wxDouble y2,
2908                                                      const wxGraphicsGradientStops& stops)
2909 {
2910     wxGraphicsBrush p;
2911     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2912     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
2913     p.SetRefData(d);
2914     return p;
2915 }
2916
2917 wxGraphicsBrush
2918 wxMacCoreGraphicsRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2919                                                      wxDouble xc, wxDouble yc,
2920                                                      wxDouble radius,
2921                                                      const wxGraphicsGradientStops& stops)
2922 {
2923     wxGraphicsBrush p;
2924     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2925     d->CreateRadialGradientBrush(xo, yo, xc, yc, radius, stops);
2926     p.SetRefData(d);
2927     return p;
2928 }
2929
2930 // sets the font
2931 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2932 {
2933     if ( font.Ok() )
2934     {
2935         wxGraphicsFont p;
2936         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2937         return p;
2938     }
2939     else
2940         return wxNullGraphicsFont;
2941 }
2942
2943 //
2944 // CoreGraphics Helper Methods
2945 //
2946
2947 // Data Providers and Consumers
2948
2949 size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
2950 {
2951     CFMutableDataRef data = (CFMutableDataRef) info;
2952     if ( data )
2953     {
2954         CFDataAppendBytes( data, (const UInt8*) bytes, count );
2955     }
2956     return count;
2957 }
2958
2959 void wxMacReleaseCFDataProviderCallback(void *info,
2960                                       const void *WXUNUSED(data),
2961                                       size_t WXUNUSED(count))
2962 {
2963     if ( info )
2964         CFRelease( (CFDataRef) info );
2965 }
2966
2967 void wxMacReleaseCFDataConsumerCallback( void *info )
2968 {
2969     if ( info )
2970         CFRelease( (CFDataRef) info );
2971 }
2972
2973 CGDataProviderRef wxMacCGDataProviderCreateWithCFData( CFDataRef data )
2974 {
2975     if ( data == NULL )
2976         return NULL;
2977
2978     return CGDataProviderCreateWithCFData( data );
2979 }
2980
2981 CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data )
2982 {
2983     if ( data == NULL )
2984         return NULL;
2985
2986     return CGDataConsumerCreateWithCFData( data );
2987 }
2988
2989 void
2990 wxMacReleaseMemoryBufferProviderCallback(void *info,
2991                                          const void * WXUNUSED_UNLESS_DEBUG(data),
2992                                          size_t WXUNUSED(size))
2993 {
2994     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
2995
2996     wxASSERT( data == membuf->GetData() ) ;
2997
2998     delete membuf ;
2999 }
3000
3001 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf )
3002 {
3003     wxMemoryBuffer* b = new wxMemoryBuffer( buf );
3004     if ( b->GetDataLen() == 0 )
3005         return NULL;
3006
3007     return CGDataProviderCreateWithData( b , (const void *) b->GetData() , b->GetDataLen() ,
3008                                                  wxMacReleaseMemoryBufferProviderCallback );
3009 }