src/osx/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/graphics.cpp
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/graphics.h"
  15 #include "wx/private/graphics.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/dcclient.h"
  19     #include "wx/dcmemory.h"
  20     #include "wx/dcprint.h"
  21     #include "wx/log.h"
  22     #include "wx/region.h"
  23     #include "wx/image.h"
  24     #include "wx/icon.h"
  25 #endif
  26
  27
  28 #ifdef __MSL__
  29     #if __MSL__ >= 0x6000
  30         #include "math.h"
  31         // in case our functions were defined outside std, we make it known all the same
  32         namespace std { }
  33         using namespace std;
  34     #endif
  35 #endif
  36
  37 #ifdef __WXMAC__
  38     #include "wx/osx/private.h"
  39     #include "wx/osx/dcprint.h"
  40     #include "wx/osx/dcclient.h"
  41     #include "wx/osx/dcmemory.h"
  42     #include "wx/osx/private.h"
  43 #else
  44     #include "CoreServices/CoreServices.h"
  45     #include "ApplicationServices/ApplicationServices.h"
  46     #include "wx/osx/core/cfstring.h"
  47     #include "wx/cocoa/dcclient.h"
  48 #endif
  49
  50 #ifdef __WXCOCOA__
  51
  52 CGColorSpaceRef wxMacGetGenericRGBColorSpace()
  53 {
  54     static wxCFRef<CGColorSpaceRef> genericRGBColorSpace;
  55
  56     if (genericRGBColorSpace == NULL)
  57     {
  58         genericRGBColorSpace.reset( CGColorSpaceCreateWithName( kCGColorSpaceGenericRGB ) );
  59     }
  60
  61     return genericRGBColorSpace;
  62 }
  63
  64 int UMAGetSystemVersion()
  65 {
  66     return 0x1050;
  67 }
  68
  69
  70 #define wxOSX_USE_CORE_TEXT 1
  71
  72 #endif
  73
  74 #if wxOSX_USE_COCOA_OR_IPHONE
  75 extern CGContextRef wxOSXGetContextFromCurrentContext() ;
  76 #if wxOSX_USE_COCOA
  77 extern bool wxOSXLockFocus( WXWidget view) ;
  78 extern void wxOSXUnlockFocus( WXWidget view) ;
  79 #endif
  80 #endif
  81
  82 #if 1 // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
  83
  84 // TODO test whether this private API also works under 10.3
  85
  86 // copying values from NSCompositingModes (see also webkit and cairo sources)
  87
  88 typedef enum CGCompositeOperation {
  89    kCGCompositeOperationClear           = 0,
  90    kCGCompositeOperationCopy            = 1,
  91    kCGCompositeOperationSourceOver      = 2,
  92    kCGCompositeOperationSourceIn        = 3,
  93    kCGCompositeOperationSourceOut       = 4,
  94    kCGCompositeOperationSourceAtop      = 5,
  95    kCGCompositeOperationDestinationOver = 6,
  96    kCGCompositeOperationDestinationIn   = 7,
  97    kCGCompositeOperationDestinationOut  = 8,
  98    kCGCompositeOperationDestinationAtop = 9,
  99    kCGCompositeOperationXOR             = 10,
 100    kCGCompositeOperationPlusDarker      = 11,
 101 // NS only, unsupported by CG : Highlight
 102    kCGCompositeOperationPlusLighter     = 12
 103 } CGCompositeOperation ;
 104
 105 extern "C"
 106 {
 107    CG_EXTERN void CGContextSetCompositeOperation (CGContextRef context, int operation);
 108 } ;
 109
 110 #endif
 111
 112 //-----------------------------------------------------------------------------
 113 // constants
 114 //-----------------------------------------------------------------------------
 115
 116 #if !defined( __DARWIN__ ) || defined(__MWERKS__)
 117 #ifndef M_PI
 118 const double M_PI = 3.14159265358979;
 119 #endif
 120 #endif
 121
 122 static const double RAD2DEG = 180.0 / M_PI;
 123
 124 //
 125 // Pen, Brushes and Fonts
 126 //
 127
 128 #pragma mark -
 129 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
 130
 131 OSStatus wxMacDrawCGImage(
 132                   CGContextRef    inContext,
 133                   const CGRect *  inBounds,
 134                   CGImageRef      inImage)
 135 {
 136 #if wxOSX_USE_CARBON
 137     return HIViewDrawCGImage( inContext, inBounds, inImage );
 138 #else
 139     CGContextSaveGState(inContext);
 140     CGContextTranslateCTM(inContext, inBounds->origin.x, inBounds->origin.y + inBounds->size.height);
 141     CGRect r = *inBounds;
 142     r.origin.x = r.origin.y = 0;
 143     CGContextScaleCTM(inContext, 1, -1);
 144     CGContextDrawImage(inContext, r, inImage );
 145     CGContextRestoreGState(inContext);
 146     return noErr;
 147 #endif
 148 }
 149
 150 CGColorRef wxMacCreateCGColor( const wxColour& col )
 151 {
 152     CGColorRef retval = 0;
 153 #ifdef __WXMAC__
 154     retval = col.CreateCGColor();
 155 #else
 156 // TODO add conversion NSColor - CGColorRef (obj-c)
 157 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 158     if ( CGColorCreateGenericRGB )
 159         retval = CGColorCreateGenericRGB( col.Red() / 255.0 , col.Green() / 255.0, col.Blue() / 255.0, col.Alpha() / 255.0 );
 160     else
 161 #endif
 162     {
 163         CGFloat components[4] = { col.Red() / 255.0, col.Green() / 255.0, col.Blue()  / 255.0, col.Alpha() / 255.0 } ;
 164         retval = CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ;
 165     }
 166
 167 #endif
 168     return retval;
 169 }
 170
 171 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 && wxOSX_USE_CORE_TEXT
 172
 173 CTFontRef wxMacCreateCTFont( const wxFont& font )
 174 {
 175 #ifdef __WXMAC__
 176     return wxCFRetain((CTFontRef) font.OSXGetCTFont());
 177 #else
 178     return CTFontCreateWithName( wxCFStringRef( font.GetFaceName(), wxLocale::GetSystemEncoding() ) , font.GetPointSize() , NULL );
 179 #endif
 180 }
 181
 182 #endif
 183
 184 // CGPattern wrapper class: always allocate on heap, never call destructor
 185
 186 class wxMacCoreGraphicsPattern
 187 {
 188 public :
 189     wxMacCoreGraphicsPattern() {}
 190
 191     // is guaranteed to be called only with a non-Null CGContextRef
 192     virtual void Render( CGContextRef ctxRef ) = 0;
 193
 194     operator CGPatternRef() const { return m_patternRef; }
 195
 196 protected :
 197     virtual ~wxMacCoreGraphicsPattern()
 198     {
 199         // as this is called only when the m_patternRef is been released;
 200         // don't release it again
 201     }
 202
 203     static void _Render( void *info, CGContextRef ctxRef )
 204     {
 205         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 206         if ( self && ctxRef )
 207             self->Render( ctxRef );
 208     }
 209
 210     static void _Dispose( void *info )
 211     {
 212         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 213         delete self;
 214     }
 215
 216     CGPatternRef m_patternRef;
 217
 218     static const CGPatternCallbacks ms_Callbacks;
 219 };
 220
 221 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
 222
 223 class ImagePattern : public wxMacCoreGraphicsPattern
 224 {
 225 public :
 226     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 227     {
 228         wxASSERT( bmp && bmp->IsOk() );
 229 #ifdef __WXMAC__
 230         Init( (CGImageRef) bmp->CreateCGImage() , transform );
 231 #endif
 232     }
 233
 234     // ImagePattern takes ownership of CGImageRef passed in
 235     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 236     {
 237         if ( image )
 238             CFRetain( image );
 239
 240         Init( image , transform );
 241     }
 242
 243     virtual void Render( CGContextRef ctxRef )
 244     {
 245         if (m_image != NULL)
 246             wxMacDrawCGImage( ctxRef, &m_imageBounds, m_image );
 247     }
 248
 249 protected :
 250     void Init( CGImageRef image, const CGAffineTransform& transform )
 251     {
 252         m_image = image;
 253         if ( m_image )
 254         {
 255             m_imageBounds = CGRectMake( (CGFloat) 0.0, (CGFloat) 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 256             m_patternRef = CGPatternCreate(
 257                 this , m_imageBounds, transform ,
 258                 m_imageBounds.size.width, m_imageBounds.size.height,
 259                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 260         }
 261     }
 262
 263     virtual ~ImagePattern()
 264     {
 265         if ( m_image )
 266             CGImageRelease( m_image );
 267     }
 268
 269     CGImageRef m_image;
 270     CGRect m_imageBounds;
 271 };
 272
 273 class HatchPattern : public wxMacCoreGraphicsPattern
 274 {
 275 public :
 276     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 277     {
 278         m_hatch = hatchstyle;
 279         m_imageBounds = CGRectMake( (CGFloat) 0.0, (CGFloat) 0.0, (CGFloat) 8.0 , (CGFloat) 8.0 );
 280         m_patternRef = CGPatternCreate(
 281             this , m_imageBounds, transform ,
 282             m_imageBounds.size.width, m_imageBounds.size.height,
 283             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 284     }
 285
 286     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 287     {
 288         CGContextStrokeLineSegments( ctxRef , pts , count );
 289     }
 290
 291     virtual void Render( CGContextRef ctxRef )
 292     {
 293         switch ( m_hatch )
 294         {
 295             case wxBDIAGONAL_HATCH :
 296                 {
 297                     CGPoint pts[] =
 298                     {
 299                     { (CGFloat) 8.0 , (CGFloat) 0.0 } , { (CGFloat) 0.0 , (CGFloat) 8.0 }
 300                     };
 301                     StrokeLineSegments( ctxRef , pts , 2 );
 302                 }
 303                 break;
 304
 305             case wxCROSSDIAG_HATCH :
 306                 {
 307                     CGPoint pts[] =
 308                     {
 309                         { (CGFloat) 0.0 , (CGFloat) 0.0 } , { (CGFloat) 8.0 , (CGFloat) 8.0 } ,
 310                         { (CGFloat) 8.0 , (CGFloat) 0.0 } , { (CGFloat) 0.0 , (CGFloat) 8.0 }
 311                     };
 312                     StrokeLineSegments( ctxRef , pts , 4 );
 313                 }
 314                 break;
 315
 316             case wxFDIAGONAL_HATCH :
 317                 {
 318                     CGPoint pts[] =
 319                     {
 320                     { (CGFloat) 0.0 , (CGFloat) 0.0 } , { (CGFloat) 8.0 , (CGFloat) 8.0 }
 321                     };
 322                     StrokeLineSegments( ctxRef , pts , 2 );
 323                 }
 324                 break;
 325
 326             case wxCROSS_HATCH :
 327                 {
 328                     CGPoint pts[] =
 329                     {
 330                     { (CGFloat) 0.0 , (CGFloat) 4.0 } , { (CGFloat) 8.0 , (CGFloat) 4.0 } ,
 331                     { (CGFloat) 4.0 , (CGFloat) 0.0 } , { (CGFloat) 4.0 , (CGFloat) 8.0 } ,
 332                     };
 333                     StrokeLineSegments( ctxRef , pts , 4 );
 334                 }
 335                 break;
 336
 337             case wxHORIZONTAL_HATCH :
 338                 {
 339                     CGPoint pts[] =
 340                     {
 341                     { (CGFloat) 0.0 , (CGFloat) 4.0 } , { (CGFloat) 8.0 , (CGFloat) 4.0 } ,
 342                     };
 343                     StrokeLineSegments( ctxRef , pts , 2 );
 344                 }
 345                 break;
 346
 347             case wxVERTICAL_HATCH :
 348                 {
 349                     CGPoint pts[] =
 350                     {
 351                     { (CGFloat) 4.0 , (CGFloat) 0.0 } , { (CGFloat) 4.0 , (CGFloat) 8.0 } ,
 352                     };
 353                     StrokeLineSegments( ctxRef , pts , 2 );
 354                 }
 355                 break;
 356
 357             default:
 358                 break;
 359         }
 360     }
 361
 362 protected :
 363     virtual ~HatchPattern() {}
 364
 365     CGRect      m_imageBounds;
 366     int         m_hatch;
 367 };
 368
 369 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 370 {
 371 public:
 372     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 373     ~wxMacCoreGraphicsPenData();
 374
 375     void Init();
 376     virtual void Apply( wxGraphicsContext* context );
 377     virtual wxDouble GetWidth() { return m_width; }
 378
 379 protected :
 380     CGLineCap m_cap;
 381     wxCFRef<CGColorRef> m_color;
 382     wxCFRef<CGColorSpaceRef> m_colorSpace;
 383
 384     CGLineJoin m_join;
 385     CGFloat m_width;
 386
 387     int m_count;
 388     const CGFloat *m_lengths;
 389     CGFloat *m_userLengths;
 390
 391
 392     bool m_isPattern;
 393     wxCFRef<CGPatternRef> m_pattern;
 394     CGFloat* m_patternColorComponents;
 395 };
 396
 397 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 398     wxGraphicsObjectRefData( renderer )
 399 {
 400     Init();
 401
 402     m_color.reset( wxMacCreateCGColor( pen.GetColour() ) ) ;
 403
 404     // TODO: * m_dc->m_scaleX
 405     m_width = pen.GetWidth();
 406     if (m_width <= 0.0)
 407         m_width = (CGFloat) 0.1;
 408
 409     switch ( pen.GetCap() )
 410     {
 411         case wxCAP_ROUND :
 412             m_cap = kCGLineCapRound;
 413             break;
 414
 415         case wxCAP_PROJECTING :
 416             m_cap = kCGLineCapSquare;
 417             break;
 418
 419         case wxCAP_BUTT :
 420             m_cap = kCGLineCapButt;
 421             break;
 422
 423         default :
 424             m_cap = kCGLineCapButt;
 425             break;
 426     }
 427
 428     switch ( pen.GetJoin() )
 429     {
 430         case wxJOIN_BEVEL :
 431             m_join = kCGLineJoinBevel;
 432             break;
 433
 434         case wxJOIN_MITER :
 435             m_join = kCGLineJoinMiter;
 436             break;
 437
 438         case wxJOIN_ROUND :
 439             m_join = kCGLineJoinRound;
 440             break;
 441
 442         default :
 443             m_join = kCGLineJoinMiter;
 444             break;
 445     }
 446
 447     const CGFloat dashUnit = m_width < 1.0 ? (CGFloat) 1.0 : m_width;
 448
 449     const CGFloat dotted[] = { (CGFloat) dashUnit , (CGFloat) (dashUnit + 2.0) };
 450     static const CGFloat short_dashed[] = { (CGFloat) 9.0 , (CGFloat) 6.0 };
 451     static const CGFloat dashed[] = { (CGFloat) 19.0 , (CGFloat) 9.0 };
 452     static const CGFloat dotted_dashed[] = { (CGFloat) 9.0 , (CGFloat) 6.0 , (CGFloat) 3.0 , (CGFloat) 3.0 };
 453
 454     switch ( pen.GetStyle() )
 455     {
 456         case wxPENSTYLE_SOLID:
 457             break;
 458
 459         case wxPENSTYLE_DOT:
 460             m_count = WXSIZEOF(dotted);
 461             m_userLengths = new CGFloat[ m_count ] ;
 462             memcpy( m_userLengths, dotted, sizeof(dotted) );
 463             m_lengths = m_userLengths;
 464             break;
 465
 466         case wxPENSTYLE_LONG_DASH:
 467             m_count = WXSIZEOF(dashed);
 468             m_lengths = dashed;
 469             break;
 470
 471         case wxPENSTYLE_SHORT_DASH:
 472             m_count = WXSIZEOF(short_dashed);
 473             m_lengths = short_dashed;
 474             break;
 475
 476         case wxPENSTYLE_DOT_DASH:
 477             m_count = WXSIZEOF(dotted_dashed);
 478             m_lengths = dotted_dashed;
 479             break;
 480
 481         case wxPENSTYLE_USER_DASH:
 482             wxDash *dashes;
 483             m_count = pen.GetDashes( &dashes );
 484             if ((dashes != NULL) && (m_count > 0))
 485             {
 486                 m_userLengths = new CGFloat[m_count];
 487                 for ( int i = 0; i < m_count; ++i )
 488                 {
 489                     m_userLengths[i] = dashes[i] * dashUnit;
 490
 491                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 492                         m_userLengths[i] = (CGFloat) (dashUnit + 2.0);
 493                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 494                         m_userLengths[i] = dashUnit;
 495                 }
 496             }
 497             m_lengths = m_userLengths;
 498             break;
 499
 500         case wxPENSTYLE_STIPPLE:
 501             {
 502                 wxBitmap* bmp = pen.GetStipple();
 503                 if ( bmp && bmp->IsOk() )
 504                 {
 505                     m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 506                     m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 507                     m_patternColorComponents = new CGFloat[1] ;
 508                     m_patternColorComponents[0] = (CGFloat) 1.0;
 509                     m_isPattern = true;
 510                 }
 511             }
 512             break;
 513
 514         default :
 515             {
 516                 m_isPattern = true;
 517                 m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 518                 m_pattern.reset( (CGPatternRef) *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 519                 m_patternColorComponents = new CGFloat[4] ;
 520                 m_patternColorComponents[0] = (CGFloat) (pen.GetColour().Red() / 255.0);
 521                 m_patternColorComponents[1] = (CGFloat) (pen.GetColour().Green() / 255.0);
 522                 m_patternColorComponents[2] = (CGFloat) (pen.GetColour().Blue() / 255.0);
 523                 m_patternColorComponents[3] =  (CGFloat) (pen.GetColour().Alpha() / 255.0);
 524             }
 525             break;
 526     }
 527     if ((m_lengths != NULL) && (m_count > 0))
 528     {
 529         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 530         m_cap = kCGLineCapButt;
 531     }
 532 }
 533
 534 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 535 {
 536     delete[] m_userLengths;
 537     delete[] m_patternColorComponents;
 538 }
 539
 540 void wxMacCoreGraphicsPenData::Init()
 541 {
 542     m_lengths = NULL;
 543     m_userLengths = NULL;
 544     m_width = 0;
 545     m_count = 0;
 546     m_patternColorComponents = NULL;
 547     m_isPattern = false;
 548 }
 549
 550 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 551 {
 552     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 553     CGContextSetLineWidth( cg , m_width );
 554     CGContextSetLineJoin( cg , m_join );
 555
 556     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 557     CGContextSetLineCap( cg , m_cap );
 558
 559     if ( m_isPattern )
 560     {
 561         CGAffineTransform matrix = CGContextGetCTM( cg );
 562         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 563         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 564         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 565     }
 566     else
 567     {
 568         CGContextSetStrokeColorWithColor( cg , m_color );
 569     }
 570 }
 571
 572 //
 573 // Brush
 574 //
 575
 576 // make sure we all use one class for all conversions from wx to native colour
 577
 578 class wxMacCoreGraphicsColour
 579 {
 580     public:
 581         wxMacCoreGraphicsColour();
 582         wxMacCoreGraphicsColour(const wxBrush &brush);
 583         ~wxMacCoreGraphicsColour();
 584
 585         void Apply( CGContextRef cgContext );
 586     protected:
 587         void Init();
 588         wxCFRef<CGColorRef> m_color;
 589         wxCFRef<CGColorSpaceRef> m_colorSpace;
 590
 591         bool m_isPattern;
 592         wxCFRef<CGPatternRef> m_pattern;
 593         CGFloat* m_patternColorComponents;
 594 } ;
 595
 596 wxMacCoreGraphicsColour::~wxMacCoreGraphicsColour()
 597 {
 598     delete[] m_patternColorComponents;
 599 }
 600
 601 void wxMacCoreGraphicsColour::Init()
 602 {
 603     m_isPattern = false;
 604     m_patternColorComponents = NULL;
 605 }
 606
 607 void wxMacCoreGraphicsColour::Apply( CGContextRef cgContext )
 608 {
 609     if ( m_isPattern )
 610     {
 611         CGAffineTransform matrix = CGContextGetCTM( cgContext );
 612         CGContextSetPatternPhase( cgContext, CGSizeMake(matrix.tx, matrix.ty) );
 613         CGContextSetFillColorSpace( cgContext , m_colorSpace );
 614         CGContextSetFillPattern( cgContext, m_pattern , m_patternColorComponents );
 615     }
 616     else
 617     {
 618         CGContextSetFillColorWithColor( cgContext, m_color );
 619     }
 620 }
 621
 622 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour()
 623 {
 624     Init();
 625 }
 626
 627 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
 628 {
 629     Init();
 630     if ( brush.GetStyle() == wxSOLID )
 631     {
 632         m_color.reset( wxMacCreateCGColor( brush.GetColour() ));
 633     }
 634     else if ( brush.IsHatch() )
 635     {
 636         m_isPattern = true;
 637         m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 638         m_pattern.reset( (CGPatternRef) *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 639
 640         m_patternColorComponents = new CGFloat[4] ;
 641         m_patternColorComponents[0] = (CGFloat) (brush.GetColour().Red() / 255.0);
 642         m_patternColorComponents[1] = (CGFloat) (brush.GetColour().Green() / 255.0);
 643         m_patternColorComponents[2] = (CGFloat) (brush.GetColour().Blue() / 255.0);
 644         m_patternColorComponents[3] = (CGFloat) (brush.GetColour().Alpha() / 255.0);
 645     }
 646     else
 647     {
 648         // now brush is a bitmap
 649         wxBitmap* bmp = brush.GetStipple();
 650         if ( bmp && bmp->IsOk() )
 651         {
 652             m_isPattern = true;
 653             m_patternColorComponents = new CGFloat[1] ;
 654             m_patternColorComponents[0] = (CGFloat) 1.0;
 655             m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 656             m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 657         }
 658     }
 659 }
 660
 661 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 662 {
 663 public:
 664     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 665     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 666     ~wxMacCoreGraphicsBrushData ();
 667
 668     virtual void Apply( wxGraphicsContext* context );
 669     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 670                                    wxDouble x2, wxDouble y2,
 671                                    const wxGraphicsGradientStops& stops);
 672     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 673                                    wxDouble xc, wxDouble yc, wxDouble radius,
 674                                    const wxGraphicsGradientStops& stops);
 675
 676     virtual bool IsShading() { return m_isShading; }
 677     CGShadingRef GetShading() { return m_shading; }
 678 protected:
 679     CGFunctionRef CreateGradientFunction(const wxGraphicsGradientStops& stops);
 680
 681     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 682     virtual void Init();
 683
 684     wxMacCoreGraphicsColour m_cgColor;
 685
 686     bool m_isShading;
 687     CGFunctionRef m_gradientFunction;
 688     CGShadingRef m_shading;
 689
 690     // information about a single gradient component
 691     struct GradientComponent
 692     {
 693         CGFloat pos;
 694         CGFloat red;
 695         CGFloat green;
 696         CGFloat blue;
 697         CGFloat alpha;
 698     };
 699
 700     // and information about all of them
 701     struct GradientComponents
 702     {
 703         GradientComponents()
 704         {
 705             count = 0;
 706             comps = NULL;
 707         }
 708
 709         void Init(unsigned count_)
 710         {
 711             count = count_;
 712             comps = new GradientComponent[count];
 713         }
 714
 715         ~GradientComponents()
 716         {
 717             delete [] comps;
 718         }
 719
 720         unsigned count;
 721         GradientComponent *comps;
 722     };
 723
 724     GradientComponents m_gradientComponents;
 725 };
 726
 727 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 728 {
 729     Init();
 730 }
 731
 732 void
 733 wxMacCoreGraphicsBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 734                                                       wxDouble x2, wxDouble y2,
 735                                                       const wxGraphicsGradientStops& stops)
 736 {
 737     m_gradientFunction = CreateGradientFunction(stops);
 738     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) x1, (CGFloat) y1),
 739                                         CGPointMake((CGFloat) x2,(CGFloat) y2), m_gradientFunction, true, true ) ;
 740     m_isShading = true ;
 741 }
 742
 743 void
 744 wxMacCoreGraphicsBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 745                                                       wxDouble xc, wxDouble yc,
 746                                                       wxDouble radius,
 747                                                       const wxGraphicsGradientStops& stops)
 748 {
 749     m_gradientFunction = CreateGradientFunction(stops);
 750     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) xo,(CGFloat) yo), 0,
 751                                         CGPointMake((CGFloat) xc,(CGFloat) yc), (CGFloat) radius, m_gradientFunction, true, true ) ;
 752     m_isShading = true ;
 753 }
 754
 755 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer ),
 756     m_cgColor( brush )
 757 {
 758     Init();
 759
 760 }
 761
 762 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 763 {
 764     if ( m_shading )
 765         CGShadingRelease(m_shading);
 766
 767     if( m_gradientFunction )
 768         CGFunctionRelease(m_gradientFunction);
 769 }
 770
 771 void wxMacCoreGraphicsBrushData::Init()
 772 {
 773     m_gradientFunction = NULL;
 774     m_shading = NULL;
 775     m_isShading = false;
 776 }
 777
 778 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 779 {
 780     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 781
 782     if ( m_isShading )
 783     {
 784         // nothing to set as shades are processed by clipping using the path and filling
 785     }
 786     else
 787     {
 788         m_cgColor.Apply( cg );
 789     }
 790 }
 791
 792 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 793 {
 794     const GradientComponents& stops = *(GradientComponents*) info ;
 795
 796     CGFloat f = *in;
 797     if (f <= 0.0)
 798     {
 799         // Start
 800         out[0] = stops.comps[0].red;
 801         out[1] = stops.comps[0].green;
 802         out[2] = stops.comps[0].blue;
 803         out[3] = stops.comps[0].alpha;
 804     }
 805     else if (f >= 1.0)
 806     {
 807         // end
 808         out[0] = stops.comps[stops.count - 1].red;
 809         out[1] = stops.comps[stops.count - 1].green;
 810         out[2] = stops.comps[stops.count - 1].blue;
 811         out[3] = stops.comps[stops.count - 1].alpha;
 812     }
 813     else
 814     {
 815         // Find first component with position greater than f
 816         unsigned i;
 817         for ( i = 0; i < stops.count; i++ )
 818         {
 819             if (stops.comps[i].pos > f)
 820                 break;
 821         }
 822
 823         // Interpolated between stops
 824         CGFloat diff = (f - stops.comps[i-1].pos);
 825         CGFloat range = (stops.comps[i].pos - stops.comps[i-1].pos);
 826         CGFloat fact = diff / range;
 827
 828         out[0] = stops.comps[i - 1].red + (stops.comps[i].red - stops.comps[i - 1].red) * fact;
 829         out[1] = stops.comps[i - 1].green + (stops.comps[i].green - stops.comps[i - 1].green) * fact;
 830         out[2] = stops.comps[i - 1].blue + (stops.comps[i].blue - stops.comps[i - 1].blue) * fact;
 831         out[3] = stops.comps[i - 1].alpha + (stops.comps[i].alpha - stops.comps[i - 1].alpha) * fact;
 832     }
 833 }
 834
 835 CGFunctionRef
 836 wxMacCoreGraphicsBrushData::CreateGradientFunction(const wxGraphicsGradientStops& stops)
 837 {
 838
 839     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 840     static const CGFloat input_value_range [2] = { 0, 1 };
 841     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 842
 843     m_gradientComponents.Init(stops.GetCount());
 844     for ( unsigned i = 0; i < m_gradientComponents.count; i++ )
 845     {
 846         const wxGraphicsGradientStop stop = stops.Item(i);
 847
 848         m_gradientComponents.comps[i].pos = stop.GetPosition();
 849
 850         const wxColour col = stop.GetColour();
 851         m_gradientComponents.comps[i].red = (CGFloat) (col.Red() / 255.0);
 852         m_gradientComponents.comps[i].green = (CGFloat) (col.Green() / 255.0);
 853         m_gradientComponents.comps[i].blue = (CGFloat) (col.Blue() / 255.0);
 854         m_gradientComponents.comps[i].alpha = (CGFloat) (col.Alpha() / 255.0);
 855     }
 856
 857     return CGFunctionCreate ( &m_gradientComponents,  1,
 858                             input_value_range,
 859                             4,
 860                             output_value_ranges,
 861                             &callbacks);
 862 }
 863
 864 //
 865 // Font
 866 //
 867
 868 #if wxOSX_USE_IPHONE
 869
 870 extern UIFont* CreateUIFont( const wxFont& font );
 871 extern void DrawTextInContext( CGContextRef context, CGPoint where, UIFont *font, NSString* text );
 872 extern CGSize MeasureTextInContext( UIFont *font, NSString* text );
 873
 874 #endif
 875
 876 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 877 {
 878 public:
 879     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 880     ~wxMacCoreGraphicsFontData();
 881
 882 #if wxOSX_USE_ATSU_TEXT
 883     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 884 #endif
 885 #if wxOSX_USE_CORE_TEXT
 886     CTFontRef OSXGetCTFont() const { return m_ctFont ; }
 887 #endif
 888     wxColour GetColour() const { return m_colour ; }
 889
 890     bool GetUnderlined() const { return m_underlined ; }
 891 #if wxOSX_USE_IPHONE
 892     UIFont* GetUIFont() const { return m_uiFont; }
 893 #endif
 894 private :
 895     wxColour m_colour;
 896     bool m_underlined;
 897 #if wxOSX_USE_ATSU_TEXT
 898     ATSUStyle m_macATSUIStyle;
 899 #endif
 900 #if wxOSX_USE_CORE_TEXT
 901     wxCFRef< CTFontRef > m_ctFont;
 902 #endif
 903 #if wxOSX_USE_IPHONE
 904     UIFont*  m_uiFont;
 905 #endif
 906 };
 907
 908 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 909 {
 910     m_colour = col;
 911     m_underlined = font.GetUnderlined();
 912
 913 #if wxOSX_USE_CORE_TEXT
 914     m_ctFont.reset( wxMacCreateCTFont( font ) );
 915 #endif
 916 #if wxOSX_USE_IPHONE
 917     m_uiFont = CreateUIFont(font);
 918     wxMacCocoaRetain( m_uiFont );
 919 #endif
 920 #if wxOSX_USE_ATSU_TEXT
 921     OSStatus status = noErr;
 922     m_macATSUIStyle = NULL;
 923
 924     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 925
 926     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 927
 928     // we need the scale here ...
 929
 930     Fixed atsuSize = IntToFixed( int( 1 * font.GetPointSize()) );
 931     RGBColor atsuColor ;
 932     col.GetRGBColor( &atsuColor );
 933     ATSUAttributeTag atsuTags[] =
 934     {
 935             kATSUSizeTag ,
 936             kATSUColorTag ,
 937     };
 938     ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
 939     {
 940             sizeof( Fixed ) ,
 941             sizeof( RGBColor ) ,
 942     };
 943     ATSUAttributeValuePtr atsuValues[WXSIZEOF(atsuTags)] =
 944     {
 945             &atsuSize ,
 946             &atsuColor ,
 947     };
 948
 949     status = ::ATSUSetAttributes(
 950         m_macATSUIStyle, WXSIZEOF(atsuTags),
 951         atsuTags, atsuSizes, atsuValues);
 952
 953     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 954 #endif
 955 }
 956
 957 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 958 {
 959 #if wxOSX_USE_CORE_TEXT
 960 #endif
 961 #if wxOSX_USE_ATSU_TEXT
 962     if ( m_macATSUIStyle )
 963     {
 964         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 965         m_macATSUIStyle = NULL;
 966     }
 967 #endif
 968 #if wxOSX_USE_IPHONE
 969     wxMacCocoaRelease( m_uiFont );
 970 #endif
 971 }
 972
 973 class wxMacCoreGraphicsBitmapData : public wxGraphicsObjectRefData
 974 {
 975 public:
 976     wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome );
 977     ~wxMacCoreGraphicsBitmapData();
 978
 979     virtual CGImageRef GetBitmap() { return m_bitmap; }
 980     bool IsMonochrome() { return m_monochrome; }
 981
 982 #if wxUSE_IMAGE
 983     wxImage ConvertToImage() const
 984     {
 985         return wxBitmap(m_bitmap).ConvertToImage();
 986     }
 987 #endif // wxUSE_IMAGE
 988
 989 private :
 990     CGImageRef m_bitmap;
 991     bool m_monochrome;
 992 };
 993
 994 wxMacCoreGraphicsBitmapData::wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome ) : wxGraphicsObjectRefData( renderer ),
 995     m_bitmap(bitmap), m_monochrome(monochrome)
 996 {
 997 }
 998
 999 wxMacCoreGraphicsBitmapData::~wxMacCoreGraphicsBitmapData()
1000 {
1001     CGImageRelease( m_bitmap );
1002 }
1003
1004 #if wxUSE_IMAGE
1005
1006 wxImage wxGraphicsBitmap::ConvertToImage() const
1007 {
1008     wxMacCoreGraphicsBitmapData* const
1009         data = static_cast<wxMacCoreGraphicsBitmapData*>(GetRefData());
1010
1011     return data ? data->ConvertToImage() : wxNullImage;
1012 }
1013
1014 #endif // wxUSE_IMAGE
1015
1016 //
1017 // Graphics Matrix
1018 //
1019
1020 //-----------------------------------------------------------------------------
1021 // wxMacCoreGraphicsMatrix declaration
1022 //-----------------------------------------------------------------------------
1023
1024 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
1025 {
1026 public :
1027     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
1028
1029     virtual ~wxMacCoreGraphicsMatrixData() ;
1030
1031     virtual wxGraphicsObjectRefData *Clone() const ;
1032
1033     // concatenates the matrix
1034     virtual void Concat( const wxGraphicsMatrixData *t );
1035
1036     // sets the matrix to the respective values
1037     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1038         wxDouble tx=0.0, wxDouble ty=0.0);
1039
1040     // gets the component valuess of the matrix
1041     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
1042                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
1043
1044     // makes this the inverse matrix
1045     virtual void Invert();
1046
1047     // returns true if the elements of the transformation matrix are equal ?
1048     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
1049
1050     // return true if this is the identity matrix
1051     virtual bool IsIdentity() const;
1052
1053     //
1054     // transformation
1055     //
1056
1057     // add the translation to this matrix
1058     virtual void Translate( wxDouble dx , wxDouble dy );
1059
1060     // add the scale to this matrix
1061     virtual void Scale( wxDouble xScale , wxDouble yScale );
1062
1063     // add the rotation to this matrix (radians)
1064     virtual void Rotate( wxDouble angle );
1065
1066     //
1067     // apply the transforms
1068     //
1069
1070     // applies that matrix to the point
1071     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
1072
1073     // applies the matrix except for translations
1074     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
1075
1076     // returns the native representation
1077     virtual void * GetNativeMatrix() const;
1078
1079 private :
1080     CGAffineTransform m_matrix;
1081 } ;
1082
1083 //-----------------------------------------------------------------------------
1084 // wxMacCoreGraphicsMatrix implementation
1085 //-----------------------------------------------------------------------------
1086
1087 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
1088 {
1089 }
1090
1091 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
1092 {
1093 }
1094
1095 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
1096 {
1097     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
1098     m->m_matrix = m_matrix ;
1099     return m;
1100 }
1101
1102 // concatenates the matrix
1103 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
1104 {
1105     m_matrix = CGAffineTransformConcat(*((CGAffineTransform*) t->GetNativeMatrix()), m_matrix );
1106 }
1107
1108 // sets the matrix to the respective values
1109 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1110     wxDouble tx, wxDouble ty)
1111 {
1112     m_matrix = CGAffineTransformMake((CGFloat) a,(CGFloat) b,(CGFloat) c,(CGFloat) d,(CGFloat) tx,(CGFloat) ty);
1113 }
1114
1115 // gets the component valuess of the matrix
1116 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
1117                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
1118 {
1119     if (a)  *a = m_matrix.a;
1120     if (b)  *b = m_matrix.b;
1121     if (c)  *c = m_matrix.c;
1122     if (d)  *d = m_matrix.d;
1123     if (tx) *tx= m_matrix.tx;
1124     if (ty) *ty= m_matrix.ty;
1125 }
1126
1127 // makes this the inverse matrix
1128 void wxMacCoreGraphicsMatrixData::Invert()
1129 {
1130     m_matrix = CGAffineTransformInvert( m_matrix );
1131 }
1132
1133 // returns true if the elements of the transformation matrix are equal ?
1134 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1135 {
1136     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
1137 }
1138
1139 // return true if this is the identity matrix
1140 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
1141 {
1142     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
1143         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
1144 }
1145
1146 //
1147 // transformation
1148 //
1149
1150 // add the translation to this matrix
1151 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
1152 {
1153     m_matrix = CGAffineTransformTranslate( m_matrix, (CGFloat) dx, (CGFloat) dy);
1154 }
1155
1156 // add the scale to this matrix
1157 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1158 {
1159     m_matrix = CGAffineTransformScale( m_matrix, (CGFloat) xScale, (CGFloat) yScale);
1160 }
1161
1162 // add the rotation to this matrix (radians)
1163 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
1164 {
1165     m_matrix = CGAffineTransformRotate( m_matrix, (CGFloat) angle);
1166 }
1167
1168 //
1169 // apply the transforms
1170 //
1171
1172 // applies that matrix to the point
1173 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1174 {
1175     CGPoint pt = CGPointApplyAffineTransform( CGPointMake((CGFloat) *x,(CGFloat) *y), m_matrix);
1176
1177     *x = pt.x;
1178     *y = pt.y;
1179 }
1180
1181 // applies the matrix except for translations
1182 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1183 {
1184     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake((CGFloat) *dx,(CGFloat) *dy) , m_matrix );
1185     *dx = sz.width;
1186     *dy = sz.height;
1187 }
1188
1189 // returns the native representation
1190 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
1191 {
1192     return (void*) &m_matrix;
1193 }
1194
1195 //
1196 // Graphics Path
1197 //
1198
1199 //-----------------------------------------------------------------------------
1200 // wxMacCoreGraphicsPath declaration
1201 //-----------------------------------------------------------------------------
1202
1203 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
1204 {
1205 public :
1206     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
1207
1208     ~wxMacCoreGraphicsPathData();
1209
1210     virtual wxGraphicsObjectRefData *Clone() const;
1211
1212     // begins a new subpath at (x,y)
1213     virtual void MoveToPoint( wxDouble x, wxDouble y );
1214
1215     // adds a straight line from the current point to (x,y)
1216     virtual void AddLineToPoint( wxDouble x, wxDouble y );
1217
1218     // adds a cubic Bezier curve from the current point, using two control points and an end point
1219     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
1220
1221     // closes the current sub-path
1222     virtual void CloseSubpath();
1223
1224     // gets the last point of the current path, (0,0) if not yet set
1225     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
1226
1227     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1228     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
1229
1230     //
1231     // These are convenience functions which - if not available natively will be assembled
1232     // using the primitives from above
1233     //
1234
1235     // adds a quadratic Bezier curve from the current point, using a control point and an end point
1236     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
1237
1238     // appends a rectangle as a new closed subpath
1239     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1240
1241     // appends a circle as a new closed subpath
1242     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
1243
1244     // appends an ellipsis as a new closed subpath fitting the passed rectangle
1245     virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
1246
1247     // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
1248     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
1249
1250     // adds another path
1251     virtual void AddPath( const wxGraphicsPathData* path );
1252
1253     // returns the native path
1254     virtual void * GetNativePath() const { return m_path; }
1255
1256     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
1257     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
1258
1259     // transforms each point of this path by the matrix
1260     virtual void Transform( const wxGraphicsMatrixData* matrix );
1261
1262     // gets the bounding box enclosing all points (possibly including control points)
1263     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
1264
1265     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
1266 private :
1267     CGMutablePathRef m_path;
1268 };
1269
1270 //-----------------------------------------------------------------------------
1271 // wxMacCoreGraphicsPath implementation
1272 //-----------------------------------------------------------------------------
1273
1274 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1275 {
1276     if ( path )
1277         m_path = path;
1278     else
1279         m_path = CGPathCreateMutable();
1280 }
1281
1282 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1283 {
1284     CGPathRelease( m_path );
1285 }
1286
1287 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1288 {
1289     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1290     return clone ;
1291 }
1292
1293
1294 // opens (starts) a new subpath
1295 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1296 {
1297     CGPathMoveToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1298 }
1299
1300 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1301 {
1302     CGPathAddLineToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1303 }
1304
1305 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1306 {
1307     CGPathAddCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) cx2, (CGFloat) cy2, (CGFloat) x , (CGFloat) y );
1308 }
1309
1310 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1311 {
1312     CGPathAddQuadCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) x , (CGFloat) y );
1313 }
1314
1315 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1316 {
1317     CGRect cgRect = { { (CGFloat) x , (CGFloat) y } , { (CGFloat) w , (CGFloat) h } };
1318     CGPathAddRect( m_path , NULL , cgRect );
1319 }
1320
1321 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1322 {
1323     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x-r,y-r,2*r,2*r));
1324 }
1325
1326 void wxMacCoreGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1327 {
1328     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x,y,w,h));
1329 }
1330
1331 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1332 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1333 {
1334     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1335     CGPathAddArc( m_path, NULL , (CGFloat) x, (CGFloat) y, (CGFloat) r, (CGFloat) startAngle, (CGFloat) endAngle, !clockwise);
1336 }
1337
1338 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1339 {
1340     CGPathAddArcToPoint( m_path, NULL , (CGFloat) x1, (CGFloat) y1, (CGFloat) x2, (CGFloat) y2, (CGFloat) r);
1341 }
1342
1343 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1344 {
1345     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1346 }
1347
1348 // closes the current subpath
1349 void wxMacCoreGraphicsPathData::CloseSubpath()
1350 {
1351     CGPathCloseSubpath( m_path );
1352 }
1353
1354 // gets the last point of the current path, (0,0) if not yet set
1355 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1356 {
1357     CGPoint p = CGPathGetCurrentPoint( m_path );
1358     *x = p.x;
1359     *y = p.y;
1360 }
1361
1362 // transforms each point of this path by the matrix
1363 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1364 {
1365     CGMutablePathRef p = CGPathCreateMutable() ;
1366     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1367     CGPathRelease( m_path );
1368     m_path = p;
1369 }
1370
1371 // gets the bounding box enclosing all points (possibly including control points)
1372 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1373 {
1374     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1375     *x = bounds.origin.x;
1376     *y = bounds.origin.y;
1377     *w = bounds.size.width;
1378     *h = bounds.size.height;
1379 }
1380
1381 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle) const
1382 {
1383     return CGPathContainsPoint( m_path, NULL, CGPointMake((CGFloat) x,(CGFloat) y), fillStyle == wxODDEVEN_RULE );
1384 }
1385
1386 //
1387 // Graphics Context
1388 //
1389
1390 //-----------------------------------------------------------------------------
1391 // wxMacCoreGraphicsContext declaration
1392 //-----------------------------------------------------------------------------
1393
1394 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1395 {
1396 public:
1397     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1398
1399 #if wxOSX_USE_CARBON
1400     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1401 #endif
1402
1403     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1404
1405     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1406
1407     ~wxMacCoreGraphicsContext();
1408
1409     void Init();
1410
1411     virtual void StartPage( wxDouble width, wxDouble height );
1412
1413     virtual void EndPage();
1414
1415     virtual void Flush();
1416
1417     // push the current state of the context, ie the transformation matrix on a stack
1418     virtual void PushState();
1419
1420     // pops a stored state from the stack
1421     virtual void PopState();
1422
1423     // clips drawings to the region
1424     virtual void Clip( const wxRegion &region );
1425
1426     // clips drawings to the rect
1427     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1428
1429     // resets the clipping to original extent
1430     virtual void ResetClip();
1431
1432     virtual void * GetNativeContext();
1433
1434     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
1435
1436     virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
1437
1438     virtual bool SetCompositionMode(wxCompositionMode op);
1439
1440     virtual void BeginLayer(wxDouble opacity);
1441
1442     virtual void EndLayer();
1443
1444     //
1445     // transformation
1446     //
1447
1448     // translate
1449     virtual void Translate( wxDouble dx , wxDouble dy );
1450
1451     // scale
1452     virtual void Scale( wxDouble xScale , wxDouble yScale );
1453
1454     // rotate (radians)
1455     virtual void Rotate( wxDouble angle );
1456
1457     // concatenates this transform with the current transform of this context
1458     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1459
1460     // sets the transform of this context
1461     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1462
1463     // gets the matrix of this context
1464     virtual wxGraphicsMatrix GetTransform() const;
1465     //
1466     // setting the paint
1467     //
1468
1469     // strokes along a path with the current pen
1470     virtual void StrokePath( const wxGraphicsPath &path );
1471
1472     // fills a path with the current brush
1473     virtual void FillPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1474
1475     // draws a path by first filling and then stroking
1476     virtual void DrawPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1477
1478     virtual bool ShouldOffset() const
1479     {
1480         if ( !m_enableOffset )
1481             return false;
1482
1483         int penwidth = 0 ;
1484         if ( !m_pen.IsNull() )
1485         {
1486             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1487             if ( penwidth == 0 )
1488                 penwidth = 1;
1489         }
1490         return ( penwidth % 2 ) == 1;
1491     }
1492     //
1493     // text
1494     //
1495
1496     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1497         wxDouble *descent, wxDouble *externalLeading ) const;
1498
1499     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1500
1501     //
1502     // image support
1503     //
1504
1505     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1506
1507     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1508
1509     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1510
1511     // fast convenience methods
1512
1513
1514     virtual void DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1515
1516     void SetNativeContext( CGContextRef cg );
1517
1518     wxDECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext);
1519
1520 private:
1521     bool EnsureIsValid();
1522
1523     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
1524     virtual void DoDrawRotatedText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1525
1526     CGContextRef m_cgContext;
1527 #if wxOSX_USE_CARBON
1528     WindowRef m_windowRef;
1529 #else
1530     WXWidget m_view;
1531 #endif
1532     bool m_contextSynthesized;
1533     CGAffineTransform m_windowTransform;
1534     bool m_invisible;
1535
1536 #if wxOSX_USE_COCOA_OR_CARBON
1537     wxCFRef<HIShapeRef> m_clipRgn;
1538 #endif
1539 };
1540
1541 //-----------------------------------------------------------------------------
1542 // device context implementation
1543 //
1544 // more and more of the dc functionality should be implemented by calling
1545 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1546 // also coordinate conversions should be moved to native matrix ops
1547 //-----------------------------------------------------------------------------
1548
1549 // we always stock two context states, one at entry, to be able to preserve the
1550 // state we were called with, the other one after changing to HI Graphics orientation
1551 // (this one is used for getting back clippings etc)
1552
1553 //-----------------------------------------------------------------------------
1554 // wxMacCoreGraphicsContext implementation
1555 //-----------------------------------------------------------------------------
1556
1557 class wxQuartzOffsetHelper
1558 {
1559 public :
1560     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1561     {
1562         m_cg = cg;
1563         m_offset = offset;
1564         if ( m_offset )
1565         {
1566             m_userOffset = CGContextConvertSizeToUserSpace( m_cg, CGSizeMake( 0.5 , 0.5 ) );
1567             CGContextTranslateCTM( m_cg, m_userOffset.width , m_userOffset.height );
1568         }
1569         else
1570         {
1571             m_userOffset = CGSizeMake(0.0, 0.0);
1572         }
1573
1574     }
1575     ~wxQuartzOffsetHelper( )
1576     {
1577         if ( m_offset )
1578             CGContextTranslateCTM( m_cg, -m_userOffset.width , -m_userOffset.height );
1579     }
1580 public :
1581     CGSize m_userOffset;
1582     CGContextRef m_cg;
1583     bool m_offset;
1584 } ;
1585
1586 void wxMacCoreGraphicsContext::Init()
1587 {
1588     m_cgContext = NULL;
1589     m_contextSynthesized = false;
1590     m_width = 0;
1591     m_height = 0;
1592 #if wxOSX_USE_CARBON
1593     m_windowRef = NULL;
1594 #endif
1595 #if wxOSX_USE_COCOA_OR_IPHONE
1596     m_view = NULL;
1597 #endif
1598     m_invisible = false;
1599     m_antialias = wxANTIALIAS_DEFAULT;
1600     m_interpolation = wxINTERPOLATION_DEFAULT;
1601 }
1602
1603 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1604 {
1605     Init();
1606     SetNativeContext(cgcontext);
1607     m_width = width;
1608     m_height = height;
1609 }
1610
1611 #if wxOSX_USE_CARBON
1612 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1613 {
1614     Init();
1615     m_windowRef = window;
1616     m_enableOffset = true;
1617 }
1618 #endif
1619
1620 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1621 {
1622     Init();
1623
1624     m_enableOffset = true;
1625     wxSize sz = window->GetSize();
1626     m_width = sz.x;
1627     m_height = sz.y;
1628
1629 #if wxOSX_USE_COCOA_OR_IPHONE
1630     m_view = window->GetHandle();
1631
1632 #if wxOSX_USE_COCOA
1633     if ( ! window->GetPeer()->IsFlipped() )
1634     {
1635         m_windowTransform = CGAffineTransformMakeTranslation( 0 , m_height );
1636         m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1637     }
1638     else
1639 #endif
1640     {
1641         m_windowTransform = CGAffineTransformIdentity;
1642     }
1643 #else
1644     int originX , originY;
1645     originX = originY = 0;
1646     Rect bounds = { 0,0,0,0 };
1647     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1648     window->MacWindowToRootWindow( &originX , &originY );
1649     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1650     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1651     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1652     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1653 #endif
1654 }
1655
1656 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1657 {
1658     Init();
1659 }
1660
1661 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1662 {
1663     SetNativeContext(NULL);
1664 }
1665
1666
1667 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1668 {
1669     CGRect r;
1670     if ( width != 0 && height != 0)
1671         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) width  , (CGFloat) height );
1672     else
1673         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) m_width  , (CGFloat) m_height );
1674
1675     CGContextBeginPage(m_cgContext,  &r );
1676 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1677 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1678 }
1679
1680 void wxMacCoreGraphicsContext::EndPage()
1681 {
1682     CGContextEndPage(m_cgContext);
1683 }
1684
1685 void wxMacCoreGraphicsContext::Flush()
1686 {
1687     CGContextFlush(m_cgContext);
1688 }
1689
1690 bool wxMacCoreGraphicsContext::EnsureIsValid()
1691 {
1692     if ( !m_cgContext )
1693     {
1694         if (m_invisible)
1695             return false;
1696
1697 #if wxOSX_USE_COCOA
1698         if ( wxOSXLockFocus(m_view) )
1699         {
1700             m_cgContext = wxOSXGetContextFromCurrentContext();
1701             wxASSERT_MSG( m_cgContext != NULL, wxT("Unable to retrieve drawing context from View"));
1702         }
1703         else
1704         {
1705             m_invisible = true;
1706         }
1707 #endif
1708 #if wxOSX_USE_IPHONE
1709         m_cgContext = wxOSXGetContextFromCurrentContext();
1710         if ( m_cgContext == NULL )
1711         {
1712             m_invisible = true;
1713         }
1714 #endif
1715 #if wxOSX_USE_CARBON
1716         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1717         if ( status != noErr )
1718         {
1719             wxFAIL_MSG("Cannot nest wxDCs on the same window");
1720         }
1721 #endif
1722         if ( m_cgContext )
1723         {
1724             CGContextSaveGState( m_cgContext );
1725 #if wxOSX_USE_COCOA_OR_CARBON
1726             if ( m_clipRgn.get() )
1727             {
1728                 wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
1729                 // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1730                 if ( HIShapeIsEmpty(hishape))
1731                 {
1732                     CGRect empty = CGRectMake( 0,0,0,0 );
1733                     CGContextClipToRect( m_cgContext, empty );
1734                 }
1735                 else
1736                 {
1737                     HIShapeReplacePathInCGContext( hishape, m_cgContext );
1738                     CGContextClip( m_cgContext );
1739                 }
1740             }
1741 #endif
1742             CGContextConcatCTM( m_cgContext, m_windowTransform );
1743             CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
1744             m_contextSynthesized = true;
1745             CGContextSaveGState( m_cgContext );
1746
1747 #if 0 // turn on for debugging of clientdc
1748             static float color = 0.5 ;
1749             static int channel = 0 ;
1750             CGRect bounds = CGRectMake(-1000,-1000,2000,2000);
1751             CGContextSetRGBFillColor( m_cgContext, channel == 0 ? color : 0.5 ,
1752                 channel == 1 ? color : 0.5 , channel == 2 ? color : 0.5 , 1 );
1753             CGContextFillRect( m_cgContext, bounds );
1754             color += 0.1 ;
1755             if ( color > 0.9 )
1756             {
1757                 color = 0.5 ;
1758                 channel++ ;
1759                 if ( channel == 3 )
1760                     channel = 0 ;
1761             }
1762 #endif
1763         }
1764     }
1765     return m_cgContext != NULL;
1766 }
1767
1768 bool wxMacCoreGraphicsContext::SetAntialiasMode(wxAntialiasMode antialias)
1769 {
1770     if (!EnsureIsValid())
1771         return true;
1772
1773     if (m_antialias == antialias)
1774         return true;
1775
1776     m_antialias = antialias;
1777
1778     bool antialiasMode;
1779     switch (antialias)
1780     {
1781         case wxANTIALIAS_DEFAULT:
1782             antialiasMode = true;
1783             break;
1784         case wxANTIALIAS_NONE:
1785             antialiasMode = false;
1786             break;
1787         default:
1788             return false;
1789     }
1790     CGContextSetShouldAntialias(m_cgContext, antialiasMode);
1791     return true;
1792 }
1793
1794 bool wxMacCoreGraphicsContext::SetInterpolationQuality(wxInterpolationQuality interpolation)
1795 {
1796     if (!EnsureIsValid())
1797         return true;
1798
1799     if (m_interpolation == interpolation)
1800         return true;
1801
1802     m_interpolation = interpolation;
1803     CGInterpolationQuality quality;
1804
1805     switch (interpolation)
1806     {
1807         case wxINTERPOLATION_DEFAULT:
1808             quality = kCGInterpolationDefault;
1809             break;
1810         case wxINTERPOLATION_NONE:
1811             quality = kCGInterpolationNone;
1812             break;
1813         case wxINTERPOLATION_FAST:
1814             quality = kCGInterpolationLow;
1815             break;
1816         case wxINTERPOLATION_GOOD:
1817 #if wxOSX_USE_COCOA_OR_CARBON
1818             quality = UMAGetSystemVersion() < 0x1060 ? kCGInterpolationHigh : (CGInterpolationQuality) 4 /*kCGInterpolationMedium only on 10.6*/;
1819 #else
1820             quality = kCGInterpolationMedium;
1821 #endif
1822             break;
1823         case wxINTERPOLATION_BEST:
1824             quality = kCGInterpolationHigh;
1825             break;
1826         default:
1827             return false;
1828     }
1829     CGContextSetInterpolationQuality(m_cgContext, quality);
1830     return true;
1831 }
1832
1833 bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
1834 {
1835     if (!EnsureIsValid())
1836         return true;
1837
1838     if ( m_composition == op )
1839         return true;
1840
1841     m_composition = op;
1842
1843     if (m_composition == wxCOMPOSITION_DEST)
1844         return true;
1845
1846 #if wxOSX_USE_COCOA_OR_CARBON
1847     if ( UMAGetSystemVersion() < 0x1060 )
1848     {
1849         CGCompositeOperation cop = kCGCompositeOperationSourceOver;
1850         CGBlendMode mode = kCGBlendModeNormal;
1851         switch( op )
1852         {
1853         case wxCOMPOSITION_CLEAR:
1854             cop = kCGCompositeOperationClear;
1855             break;
1856         case wxCOMPOSITION_SOURCE:
1857             cop = kCGCompositeOperationCopy;
1858             break;
1859         case wxCOMPOSITION_OVER:
1860             mode = kCGBlendModeNormal;
1861             break;
1862         case wxCOMPOSITION_IN:
1863             cop = kCGCompositeOperationSourceIn;
1864             break;
1865         case wxCOMPOSITION_OUT:
1866             cop = kCGCompositeOperationSourceOut;
1867             break;
1868         case wxCOMPOSITION_ATOP:
1869             cop = kCGCompositeOperationSourceAtop;
1870             break;
1871         case wxCOMPOSITION_DEST_OVER:
1872             cop = kCGCompositeOperationDestinationOver;
1873             break;
1874         case wxCOMPOSITION_DEST_IN:
1875             cop = kCGCompositeOperationDestinationIn;
1876             break;
1877         case wxCOMPOSITION_DEST_OUT:
1878             cop = kCGCompositeOperationDestinationOut;
1879             break;
1880         case wxCOMPOSITION_DEST_ATOP:
1881            cop = kCGCompositeOperationDestinationAtop;
1882             break;
1883         case wxCOMPOSITION_XOR:
1884             cop = kCGCompositeOperationXOR;
1885             break;
1886 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1887         case wxCOMPOSITION_ADD:
1888             mode = kCGBlendModePlusLighter ;
1889             break;
1890 #endif
1891         default:
1892             return false;
1893         }
1894         if ( cop != kCGCompositeOperationSourceOver )
1895             CGContextSetCompositeOperation(m_cgContext, cop);
1896         else
1897             CGContextSetBlendMode(m_cgContext, mode);
1898     }
1899 #endif
1900 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1901     else
1902     {
1903         CGBlendMode mode = kCGBlendModeNormal;
1904         switch( op )
1905         {
1906         case wxCOMPOSITION_CLEAR:
1907             mode = kCGBlendModeClear;
1908             break;
1909         case wxCOMPOSITION_SOURCE:
1910             mode = kCGBlendModeCopy;
1911             break;
1912         case wxCOMPOSITION_OVER:
1913             mode = kCGBlendModeNormal;
1914             break;
1915         case wxCOMPOSITION_IN:
1916             mode = kCGBlendModeSourceIn;
1917             break;
1918         case wxCOMPOSITION_OUT:
1919             mode = kCGBlendModeSourceOut;
1920             break;
1921         case wxCOMPOSITION_ATOP:
1922             mode = kCGBlendModeSourceAtop;
1923             break;
1924         case wxCOMPOSITION_DEST_OVER:
1925             mode = kCGBlendModeDestinationOver;
1926             break;
1927         case wxCOMPOSITION_DEST_IN:
1928             mode = kCGBlendModeDestinationIn;
1929             break;
1930         case wxCOMPOSITION_DEST_OUT:
1931             mode = kCGBlendModeDestinationOut;
1932             break;
1933         case wxCOMPOSITION_DEST_ATOP:
1934            mode = kCGBlendModeDestinationAtop;
1935             break;
1936         case wxCOMPOSITION_XOR:
1937             mode = kCGBlendModeXOR;
1938             break;
1939
1940         case wxCOMPOSITION_ADD:
1941             mode = kCGBlendModePlusLighter ;
1942             break;
1943         default:
1944             return false;
1945         }
1946         CGContextSetBlendMode(m_cgContext, mode);
1947     }
1948 #endif
1949     return true;
1950 }
1951
1952 void wxMacCoreGraphicsContext::BeginLayer(wxDouble opacity)
1953 {
1954     CGContextSaveGState(m_cgContext);
1955     CGContextSetAlpha(m_cgContext, (CGFloat) opacity);
1956     CGContextBeginTransparencyLayer(m_cgContext, 0);
1957 }
1958
1959 void wxMacCoreGraphicsContext::EndLayer()
1960 {
1961     CGContextEndTransparencyLayer(m_cgContext);
1962     CGContextRestoreGState(m_cgContext);
1963 }
1964
1965 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1966 {
1967 #if wxOSX_USE_COCOA_OR_CARBON
1968     if( m_cgContext )
1969     {
1970         wxCFRef<HIShapeRef> shape = wxCFRefFromGet(region.GetWXHRGN());
1971         // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1972         if ( HIShapeIsEmpty(shape))
1973         {
1974             CGRect empty = CGRectMake( 0,0,0,0 );
1975             CGContextClipToRect( m_cgContext, empty );
1976         }
1977         else
1978         {
1979             HIShapeReplacePathInCGContext( shape, m_cgContext );
1980             CGContextClip( m_cgContext );
1981         }
1982     }
1983     else
1984     {
1985         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1986         // to regions we try at least to have correct translations
1987         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
1988
1989         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1990         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1991         m_clipRgn.reset(mutableShape);
1992     }
1993 #else
1994     // allow usage as measuring context
1995     // wxASSERT_MSG( m_cgContext != NULL, "Needs a valid context for clipping" );
1996 #endif
1997 }
1998
1999 // clips drawings to the rect
2000 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2001 {
2002     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2003     if ( m_cgContext )
2004     {
2005         CGContextClipToRect( m_cgContext, r );
2006     }
2007     else
2008     {
2009 #if wxOSX_USE_COCOA_OR_CARBON
2010         // the clipping itself must be stored as device coordinates, otherwise
2011         // we cannot apply it back correctly
2012         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
2013         r.size= CGSizeApplyAffineTransform(r.size, m_windowTransform);
2014         m_clipRgn.reset(HIShapeCreateWithRect(&r));
2015 #else
2016     // allow usage as measuring context
2017     // wxFAIL_MSG( "Needs a valid context for clipping" );
2018 #endif
2019     }
2020 }
2021
2022     // resets the clipping to original extent
2023 void wxMacCoreGraphicsContext::ResetClip()
2024 {
2025     if ( m_cgContext )
2026     {
2027         // there is no way for clearing the clip, we can only revert to the stored
2028         // state, but then we have to make sure everything else is NOT restored
2029         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2030         CGContextRestoreGState( m_cgContext );
2031         CGContextSaveGState( m_cgContext );
2032         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
2033         transformNew = CGAffineTransformInvert( transformNew ) ;
2034         CGContextConcatCTM( m_cgContext, transformNew);
2035         CGContextConcatCTM( m_cgContext, transform);
2036     }
2037     else
2038     {
2039 #if wxOSX_USE_COCOA_OR_CARBON
2040         m_clipRgn.reset();
2041 #else
2042     // allow usage as measuring context
2043     // wxFAIL_MSG( "Needs a valid context for clipping" );
2044 #endif
2045     }
2046 }
2047
2048 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
2049 {
2050     if ( m_pen.IsNull() )
2051         return ;
2052
2053     if (!EnsureIsValid())
2054         return;
2055
2056     if (m_composition == wxCOMPOSITION_DEST)
2057         return;
2058
2059     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2060
2061     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2062     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2063     CGContextStrokePath( m_cgContext );
2064 }
2065
2066 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2067 {
2068     if (!EnsureIsValid())
2069         return;
2070
2071     if (m_composition == wxCOMPOSITION_DEST)
2072         return;
2073
2074     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2075     {
2076         // when using shading, we cannot draw pen and brush at the same time
2077         // revert to the base implementation of first filling and then stroking
2078         wxGraphicsContext::DrawPath( path, fillStyle );
2079         return;
2080     }
2081
2082     CGPathDrawingMode mode = kCGPathFill ;
2083     if ( m_brush.IsNull() )
2084     {
2085         if ( m_pen.IsNull() )
2086             return;
2087         else
2088             mode = kCGPathStroke;
2089     }
2090     else
2091     {
2092         if ( m_pen.IsNull() )
2093         {
2094             if ( fillStyle == wxODDEVEN_RULE )
2095                 mode = kCGPathEOFill;
2096             else
2097                 mode = kCGPathFill;
2098         }
2099         else
2100         {
2101             if ( fillStyle == wxODDEVEN_RULE )
2102                 mode = kCGPathEOFillStroke;
2103             else
2104                 mode = kCGPathFillStroke;
2105         }
2106     }
2107
2108     if ( !m_brush.IsNull() )
2109         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2110     if ( !m_pen.IsNull() )
2111         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2112
2113     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2114
2115     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2116     CGContextDrawPath( m_cgContext , mode );
2117 }
2118
2119 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2120 {
2121     if ( m_brush.IsNull() )
2122         return;
2123
2124     if (!EnsureIsValid())
2125         return;
2126
2127     if (m_composition == wxCOMPOSITION_DEST)
2128         return;
2129
2130     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2131     {
2132         CGContextSaveGState( m_cgContext );
2133         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2134         CGContextClip( m_cgContext );
2135         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2136         CGContextRestoreGState( m_cgContext);
2137     }
2138     else
2139     {
2140         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2141         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2142         if ( fillStyle == wxODDEVEN_RULE )
2143             CGContextEOFillPath( m_cgContext );
2144         else
2145             CGContextFillPath( m_cgContext );
2146     }
2147 }
2148
2149 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
2150 {
2151     // we allow either setting or clearing but not replacing
2152     wxASSERT( m_cgContext == NULL || cg == NULL );
2153
2154     if ( m_cgContext )
2155     {
2156         CGContextRestoreGState( m_cgContext );
2157         CGContextRestoreGState( m_cgContext );
2158         if ( m_contextSynthesized )
2159         {
2160 #if wxOSX_USE_CARBON
2161             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
2162 #endif
2163 #if wxOSX_USE_COCOA
2164             wxOSXUnlockFocus(m_view);
2165 #endif
2166         }
2167         else
2168             CGContextRelease(m_cgContext);
2169     }
2170
2171     m_cgContext = cg;
2172
2173     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
2174     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
2175     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
2176     // for this one operation.
2177
2178     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
2179     // can be removed.
2180     if (m_cgContext)
2181     {
2182         CGContextRetain(m_cgContext);
2183         CGContextSaveGState( m_cgContext );
2184         CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
2185         CGContextSaveGState( m_cgContext );
2186         m_contextSynthesized = false;
2187     }
2188 }
2189
2190 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
2191 {
2192     if ( m_cgContext )
2193         CGContextTranslateCTM( m_cgContext, (CGFloat) dx, (CGFloat) dy );
2194     else
2195         m_windowTransform = CGAffineTransformTranslate(m_windowTransform, (CGFloat) dx, (CGFloat) dy);
2196 }
2197
2198 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
2199 {
2200     if ( m_cgContext )
2201         CGContextScaleCTM( m_cgContext , (CGFloat) xScale , (CGFloat) yScale );
2202     else
2203         m_windowTransform = CGAffineTransformScale(m_windowTransform, (CGFloat) xScale, (CGFloat) yScale);
2204 }
2205
2206 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
2207 {
2208     if ( m_cgContext )
2209         CGContextRotateCTM( m_cgContext , (CGFloat) angle );
2210     else
2211         m_windowTransform = CGAffineTransformRotate(m_windowTransform, (CGFloat) angle);
2212 }
2213
2214 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2215 {
2216     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
2217     DrawBitmap(bitmap, x, y, w, h);
2218 }
2219
2220 void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2221 {
2222     if (!EnsureIsValid())
2223         return;
2224
2225     if (m_composition == wxCOMPOSITION_DEST)
2226         return;
2227
2228 #ifdef __WXMAC__
2229     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
2230     CGImageRef image = refdata->GetBitmap();
2231     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2232     if ( refdata->IsMonochrome() == 1 )
2233     {
2234         // is a mask, the '1' in the mask tell where to draw the current brush
2235         if (  !m_brush.IsNull() )
2236         {
2237             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2238             {
2239                 // TODO clip to mask
2240             /*
2241                 CGContextSaveGState( m_cgContext );
2242                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2243                 CGContextClip( m_cgContext );
2244                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2245                 CGContextRestoreGState( m_cgContext);
2246             */
2247             }
2248             else
2249             {
2250                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2251                 wxMacDrawCGImage( m_cgContext , &r , image );
2252             }
2253         }
2254     }
2255     else
2256     {
2257         wxMacDrawCGImage( m_cgContext , &r , image );
2258     }
2259 #endif
2260 }
2261
2262 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2263 {
2264     if (!EnsureIsValid())
2265         return;
2266
2267     if (m_composition == wxCOMPOSITION_DEST)
2268         return;
2269
2270     CGRect r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) w , (CGFloat) h );
2271     CGContextSaveGState( m_cgContext );
2272     CGContextTranslateCTM( m_cgContext,(CGFloat) x ,(CGFloat) (y + h) );
2273     CGContextScaleCTM( m_cgContext, 1, -1 );
2274 #if wxOSX_USE_COCOA_OR_CARBON
2275     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
2276         NULL , kPlotIconRefNormalFlags , icon.GetHICON() );
2277 #endif
2278     CGContextRestoreGState( m_cgContext );
2279 }
2280
2281 void wxMacCoreGraphicsContext::PushState()
2282 {
2283     if (!EnsureIsValid())
2284         return;
2285
2286     CGContextSaveGState( m_cgContext );
2287 }
2288
2289 void wxMacCoreGraphicsContext::PopState()
2290 {
2291     if (!EnsureIsValid())
2292         return;
2293
2294     CGContextRestoreGState( m_cgContext );
2295 }
2296
2297 void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDouble y )
2298 {
2299     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2300
2301     if (!EnsureIsValid())
2302         return;
2303
2304     if (m_composition == wxCOMPOSITION_DEST)
2305         return;
2306
2307 #if wxOSX_USE_CORE_TEXT
2308     if ( UMAGetSystemVersion() >= 0x1050 )
2309     {
2310         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2311         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2312         CTFontRef font = fref->OSXGetCTFont();
2313         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2314         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
2315         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
2316          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
2317         CFTypeRef values[] = { font, col, underlined };
2318         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2319                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2320         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2321         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2322
2323         y += CTFontGetAscent(font);
2324
2325         CGContextSaveGState(m_cgContext);
2326         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2327         CGContextScaleCTM(m_cgContext, 1, -1);
2328         CGContextSetTextPosition(m_cgContext, 0, 0);
2329         CTLineDraw( line, m_cgContext );
2330         CGContextRestoreGState(m_cgContext);
2331         CFRelease( col );
2332         return;
2333     }
2334 #endif
2335 #if wxOSX_USE_ATSU_TEXT
2336     {
2337         DrawText(str, x, y, 0.0);
2338         return;
2339     }
2340 #endif
2341 #if wxOSX_USE_IPHONE
2342     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2343
2344     CGContextSaveGState(m_cgContext);
2345
2346     CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2347     CGContextSetTextDrawingMode (m_cgContext, kCGTextFill);
2348     CGContextSetFillColorWithColor( m_cgContext, col );
2349
2350     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2351     DrawTextInContext( m_cgContext, CGPointMake( x, y ), fref->GetUIFont() , text.AsNSString() );
2352
2353     CGContextRestoreGState(m_cgContext);
2354     CFRelease( col );
2355 #endif
2356 }
2357
2358 void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
2359                                                  wxDouble x, wxDouble y,
2360                                                  wxDouble angle)
2361 {
2362     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2363
2364     if (!EnsureIsValid())
2365         return;
2366
2367     if (m_composition == wxCOMPOSITION_DEST)
2368         return;
2369
2370 #if wxOSX_USE_CORE_TEXT
2371     if ( UMAGetSystemVersion() >= 0x1050 )
2372     {
2373         // default implementation takes care of rotation and calls non rotated DrawText afterwards
2374         wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2375         return;
2376     }
2377 #endif
2378 #if wxOSX_USE_ATSU_TEXT
2379     {
2380         OSStatus status = noErr;
2381         ATSUTextLayout atsuLayout;
2382         wxMacUniCharBuffer unibuf( str );
2383         UniCharCount chars = unibuf.GetChars();
2384
2385         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2386         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2387                                                    &chars , &style , &atsuLayout );
2388
2389         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
2390
2391         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2392         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2393
2394         int iAngle = int( angle * RAD2DEG );
2395         if ( abs(iAngle) > 0 )
2396         {
2397             Fixed atsuAngle = IntToFixed( iAngle );
2398             ATSUAttributeTag atsuTags[] =
2399             {
2400                 kATSULineRotationTag ,
2401             };
2402             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2403             {
2404                 sizeof( Fixed ) ,
2405             };
2406             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2407             {
2408                 &atsuAngle ,
2409             };
2410             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2411                                              atsuTags, atsuSizes, atsuValues );
2412         }
2413
2414         {
2415             ATSUAttributeTag atsuTags[] =
2416             {
2417                 kATSUCGContextTag ,
2418             };
2419             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2420             {
2421                 sizeof( CGContextRef ) ,
2422             };
2423             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2424             {
2425                 &m_cgContext ,
2426             };
2427             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2428                                              atsuTags, atsuSizes, atsuValues );
2429         }
2430
2431         ATSUTextMeasurement textBefore, textAfter;
2432         ATSUTextMeasurement ascent, descent;
2433
2434         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2435                                             &textBefore , &textAfter, &ascent , &descent );
2436
2437         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2438
2439         Rect rect;
2440         x += (int)(sin(angle) * FixedToFloat(ascent));
2441         y += (int)(cos(angle) * FixedToFloat(ascent));
2442
2443         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2444                                         IntToFixed(x) , IntToFixed(y) , &rect );
2445         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2446
2447         CGContextSaveGState(m_cgContext);
2448         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2449         CGContextScaleCTM(m_cgContext, 1, -1);
2450         status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2451                                 IntToFixed(0) , IntToFixed(0) );
2452
2453         wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
2454
2455         CGContextRestoreGState(m_cgContext);
2456
2457         ::ATSUDisposeTextLayout(atsuLayout);
2458
2459         return;
2460     }
2461 #endif
2462 #if wxOSX_USE_IPHONE
2463     // default implementation takes care of rotation and calls non rotated DrawText afterwards
2464     wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2465 #endif
2466 }
2467
2468 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2469                             wxDouble *descent, wxDouble *externalLeading ) const
2470 {
2471     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::GetTextExtent - no valid font set") );
2472
2473     if ( width )
2474         *width = 0;
2475     if ( height )
2476         *height = 0;
2477     if ( descent )
2478         *descent = 0;
2479     if ( externalLeading )
2480         *externalLeading = 0;
2481
2482     if (str.empty())
2483         return;
2484
2485 #if wxOSX_USE_CORE_TEXT
2486     if ( UMAGetSystemVersion() >= 0x1050 )
2487     {
2488         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2489         CTFontRef font = fref->OSXGetCTFont();
2490
2491         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2492         CFStringRef keys[] = { kCTFontAttributeName  };
2493         CFTypeRef values[] = { font };
2494         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2495                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2496         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2497         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2498
2499         CGFloat a, d, l, w;
2500         w = CTLineGetTypographicBounds(line, &a, &d, &l);
2501
2502         if ( height )
2503             *height = a+d+l;
2504         if ( descent )
2505             *descent = d;
2506         if ( externalLeading )
2507             *externalLeading = l;
2508         if ( width )
2509             *width = w;
2510         return;
2511     }
2512 #endif
2513 #if wxOSX_USE_ATSU_TEXT
2514     {
2515         OSStatus status = noErr;
2516
2517         ATSUTextLayout atsuLayout;
2518         wxMacUniCharBuffer unibuf( str );
2519         UniCharCount chars = unibuf.GetChars();
2520
2521         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2522         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2523                                                    &chars , &style , &atsuLayout );
2524
2525         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2526
2527         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2528         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2529
2530         ATSUTextMeasurement textBefore, textAfter;
2531         ATSUTextMeasurement textAscent, textDescent;
2532
2533         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2534                                             &textBefore , &textAfter, &textAscent , &textDescent );
2535
2536         if ( height )
2537             *height = FixedToFloat(textAscent + textDescent);
2538         if ( descent )
2539             *descent = FixedToFloat(textDescent);
2540         if ( externalLeading )
2541             *externalLeading = 0;
2542         if ( width )
2543             *width = FixedToFloat(textAfter - textBefore);
2544
2545         ::ATSUDisposeTextLayout(atsuLayout);
2546
2547         return;
2548     }
2549 #endif
2550 #if wxOSX_USE_IPHONE
2551     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2552
2553     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2554     CGSize sz = MeasureTextInContext( fref->GetUIFont() , text.AsNSString() );
2555
2556     if ( height )
2557         *height = sz.height;
2558         /*
2559     if ( descent )
2560         *descent = FixedToFloat(textDescent);
2561     if ( externalLeading )
2562         *externalLeading = 0;
2563         */
2564     if ( width )
2565         *width = sz.width;
2566 #endif
2567 }
2568
2569 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2570 {
2571     widths.Empty();
2572     widths.Add(0, text.length());
2573
2574     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2575
2576     if (text.empty())
2577         return;
2578
2579 #if wxOSX_USE_CORE_TEXT
2580     {
2581         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2582         CTFontRef font = fref->OSXGetCTFont();
2583
2584         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
2585         CFStringRef keys[] = { kCTFontAttributeName  };
2586         CFTypeRef values[] = { font };
2587         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2588                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2589         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, t, attributes) );
2590         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2591
2592         int chars = text.length();
2593         for ( int pos = 0; pos < (int)chars; pos ++ )
2594         {
2595             widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL );
2596         }
2597
2598         return;
2599     }
2600 #endif
2601 #if wxOSX_USE_ATSU_TEXT
2602     {
2603         OSStatus status = noErr;
2604         ATSUTextLayout atsuLayout;
2605         wxMacUniCharBuffer unibuf( text );
2606         UniCharCount chars = unibuf.GetChars();
2607
2608         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2609         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2610                                           &chars , &style , &atsuLayout );
2611
2612         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2613
2614         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2615         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2616
2617 // new implementation from JS, keep old one just in case
2618 #if 0
2619         for ( int pos = 0; pos < (int)chars; pos ++ )
2620         {
2621             unsigned long actualNumberOfBounds = 0;
2622             ATSTrapezoid glyphBounds;
2623
2624             // We get a single bound, since the text should only require one. If it requires more, there is an issue
2625             OSStatus result;
2626             result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
2627                                         kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
2628             if (result != noErr || actualNumberOfBounds != 1 )
2629                 return;
2630
2631             widths[pos] = FixedToFloat( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
2632             //unsigned char uch = s[i];
2633         }
2634 #else
2635         ATSLayoutRecord *layoutRecords = NULL;
2636         ItemCount glyphCount = 0;
2637
2638         // Get the glyph extents
2639         OSStatus err = ::ATSUDirectGetLayoutDataArrayPtrFromTextLayout(atsuLayout,
2640                                                                        0,
2641                                                                        kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2642                                                                        (void **)
2643                                                                        &layoutRecords,
2644                                                                        &glyphCount);
2645         wxASSERT(glyphCount == (text.length()+1));
2646
2647         if ( err == noErr && glyphCount == (text.length()+1))
2648         {
2649             for ( int pos = 1; pos < (int)glyphCount ; pos ++ )
2650             {
2651                 widths[pos-1] = FixedToFloat( layoutRecords[pos].realPos );
2652             }
2653         }
2654
2655         ::ATSUDirectReleaseLayoutDataArrayPtr(NULL,
2656                                               kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2657                                               (void **) &layoutRecords);
2658 #endif
2659         ::ATSUDisposeTextLayout(atsuLayout);
2660     }
2661 #endif
2662 #if wxOSX_USE_IPHONE
2663     // TODO core graphics text implementation here
2664 #endif
2665 }
2666
2667 void * wxMacCoreGraphicsContext::GetNativeContext()
2668 {
2669     return m_cgContext;
2670 }
2671
2672
2673 void wxMacCoreGraphicsContext::DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2674 {
2675     if (m_composition == wxCOMPOSITION_DEST)
2676         return;
2677
2678     CGRect rect = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2679     if ( !m_brush.IsNull() )
2680     {
2681         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2682         CGContextFillRect(m_cgContext, rect);
2683     }
2684
2685     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2686     if ( !m_pen.IsNull() )
2687     {
2688         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2689         CGContextStrokeRect(m_cgContext, rect);
2690     }
2691 }
2692
2693 // concatenates this transform with the current transform of this context
2694 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
2695 {
2696     if ( m_cgContext )
2697         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2698     else
2699         m_windowTransform = CGAffineTransformConcat(*(CGAffineTransform*) matrix.GetNativeMatrix(), m_windowTransform);
2700 }
2701
2702 // sets the transform of this context
2703 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
2704 {
2705     if ( m_cgContext )
2706     {
2707         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2708         transform = CGAffineTransformInvert( transform ) ;
2709         CGContextConcatCTM( m_cgContext, transform);
2710         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2711     }
2712     else
2713     {
2714         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
2715     }
2716 }
2717
2718 // gets the matrix of this context
2719 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
2720 {
2721     wxGraphicsMatrix m = CreateMatrix();
2722     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
2723         CGContextGetCTM( m_cgContext ));
2724     return m;
2725 }
2726
2727
2728 #if wxUSE_IMAGE
2729
2730 // ----------------------------------------------------------------------------
2731 // wxMacCoreGraphicsImageContext
2732 // ----------------------------------------------------------------------------
2733
2734 // This is a GC that can be used to draw on wxImage. In this implementation we
2735 // simply draw on a wxBitmap using wxMemoryDC and then convert it to wxImage in
2736 // the end so it's not especially interesting and exists mainly for
2737 // compatibility with the other platforms.
2738 class wxMacCoreGraphicsImageContext : public wxMacCoreGraphicsContext
2739 {
2740 public:
2741     wxMacCoreGraphicsImageContext(wxGraphicsRenderer* renderer,
2742                                   wxImage& image) :
2743         wxMacCoreGraphicsContext(renderer),
2744         m_image(image),
2745         m_bitmap(image),
2746         m_memDC(m_bitmap)
2747     {
2748         SetNativeContext
2749         (
2750             (CGContextRef)(m_memDC.GetGraphicsContext()->GetNativeContext())
2751         );
2752         m_width = image.GetWidth();
2753         m_height = image.GetHeight();
2754     }
2755
2756     virtual ~wxMacCoreGraphicsImageContext()
2757     {
2758         m_memDC.SelectObject(wxNullBitmap);
2759         m_image = m_bitmap.ConvertToImage();
2760     }
2761
2762 private:
2763     wxImage& m_image;
2764     wxBitmap m_bitmap;
2765     wxMemoryDC m_memDC;
2766 };
2767
2768 #endif // wxUSE_IMAGE
2769
2770 //
2771 // Renderer
2772 //
2773
2774 //-----------------------------------------------------------------------------
2775 // wxMacCoreGraphicsRenderer declaration
2776 //-----------------------------------------------------------------------------
2777
2778 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2779 {
2780 public :
2781     wxMacCoreGraphicsRenderer() {}
2782
2783     virtual ~wxMacCoreGraphicsRenderer() {}
2784
2785     // Context
2786
2787     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2788     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2789 #if wxUSE_PRINTING_ARCHITECTURE
2790     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
2791 #endif
2792
2793     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2794
2795     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2796
2797     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2798
2799 #if wxUSE_IMAGE
2800     virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
2801 #endif // wxUSE_IMAGE
2802
2803     virtual wxGraphicsContext * CreateMeasuringContext();
2804
2805     // Path
2806
2807     virtual wxGraphicsPath CreatePath();
2808
2809     // Matrix
2810
2811     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2812         wxDouble tx=0.0, wxDouble ty=0.0);
2813
2814
2815     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2816
2817     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2818
2819     virtual wxGraphicsBrush
2820     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2821                               wxDouble x2, wxDouble y2,
2822                               const wxGraphicsGradientStops& stops);
2823
2824     virtual wxGraphicsBrush
2825     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2826                               wxDouble xc, wxDouble yc,
2827                               wxDouble radius,
2828                               const wxGraphicsGradientStops& stops);
2829
2830    // sets the font
2831     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2832     virtual wxGraphicsFont CreateFont(double sizeInPixels,
2833                                       const wxString& facename,
2834                                       int flags = wxFONTFLAG_DEFAULT,
2835                                       const wxColour& col = *wxBLACK);
2836
2837     // create a native bitmap representation
2838     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
2839
2840 #if wxUSE_IMAGE
2841     virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
2842 #endif // wxUSE_IMAGE
2843
2844     // create a graphics bitmap from a native bitmap
2845     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
2846
2847     // create a native bitmap representation
2848     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) ;
2849 private :
2850     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2851 } ;
2852
2853 //-----------------------------------------------------------------------------
2854 // wxMacCoreGraphicsRenderer implementation
2855 //-----------------------------------------------------------------------------
2856
2857 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2858
2859 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2860
2861 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2862 {
2863     return &gs_MacCoreGraphicsRenderer;
2864 }
2865
2866 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc )
2867 {
2868     const wxDCImpl* impl = dc.GetImpl();
2869     wxWindowDCImpl *win_impl = wxDynamicCast( impl, wxWindowDCImpl );
2870     if (win_impl)
2871     {
2872         int w, h;
2873         win_impl->GetSize( &w, &h );
2874         CGContextRef cgctx = 0;
2875
2876         wxASSERT_MSG(win_impl->GetWindow(), "Invalid wxWindow in wxMacCoreGraphicsRenderer::CreateContext");
2877         if (win_impl->GetWindow())
2878             cgctx =  (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef());
2879
2880         // having a cgctx being NULL is fine (will be created on demand)
2881         // this is the case for all wxWindowDCs except wxPaintDC
2882         wxMacCoreGraphicsContext *context =
2883             new wxMacCoreGraphicsContext( this, cgctx, (wxDouble) w, (wxDouble) h );
2884         context->EnableOffset(true);
2885         return context;
2886     }
2887     return NULL;
2888 }
2889
2890 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC& dc )
2891 {
2892 #ifdef __WXMAC__
2893     const wxDCImpl* impl = dc.GetImpl();
2894     wxMemoryDCImpl *mem_impl = wxDynamicCast( impl, wxMemoryDCImpl );
2895     if (mem_impl)
2896     {
2897         int w, h;
2898         mem_impl->GetSize( &w, &h );
2899         wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext( this,
2900             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2901         context->EnableOffset(true);
2902         return context;
2903     }
2904 #endif
2905     return NULL;
2906 }
2907
2908 #if wxUSE_PRINTING_ARCHITECTURE
2909 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxPrinterDC& dc )
2910 {
2911 #ifdef __WXMAC__
2912     const wxDCImpl* impl = dc.GetImpl();
2913     wxPrinterDCImpl *print_impl = wxDynamicCast( impl, wxPrinterDCImpl );
2914     if (print_impl)
2915     {
2916         int w, h;
2917         print_impl->GetSize( &w, &h );
2918         return new wxMacCoreGraphicsContext( this,
2919             (CGContextRef)(print_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2920     }
2921 #endif
2922     return NULL;
2923 }
2924 #endif
2925
2926 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2927 {
2928     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2929 }
2930
2931 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2932 {
2933 #if wxOSX_USE_CARBON
2934     wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext(this,(WindowRef)window);
2935     context->EnableOffset(true);
2936     return context;
2937 #else
2938     wxUnusedVar(window);
2939     return NULL;
2940 #endif
2941 }
2942
2943 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2944 {
2945     return new wxMacCoreGraphicsContext(this, window );
2946 }
2947
2948 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2949 {
2950     return new wxMacCoreGraphicsContext(this);
2951 }
2952
2953 #if wxUSE_IMAGE
2954
2955 wxGraphicsContext*
2956 wxMacCoreGraphicsRenderer::CreateContextFromImage(wxImage& image)
2957 {
2958     return new wxMacCoreGraphicsImageContext(this, image);
2959 }
2960
2961 #endif // wxUSE_IMAGE
2962
2963 // Path
2964
2965 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2966 {
2967     wxGraphicsPath m;
2968     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2969     return m;
2970 }
2971
2972
2973 // Matrix
2974
2975 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2976     wxDouble tx, wxDouble ty)
2977 {
2978     wxGraphicsMatrix m;
2979     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2980     data->Set( a,b,c,d,tx,ty ) ;
2981     m.SetRefData(data);
2982     return m;
2983 }
2984
2985 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2986 {
2987     if ( !pen.IsOk() || pen.GetStyle() == wxTRANSPARENT )
2988         return wxNullGraphicsPen;
2989     else
2990     {
2991         wxGraphicsPen p;
2992         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2993         return p;
2994     }
2995 }
2996
2997 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2998 {
2999     if ( !brush.IsOk() || brush.GetStyle() == wxTRANSPARENT )
3000         return wxNullGraphicsBrush;
3001     else
3002     {
3003         wxGraphicsBrush p;
3004         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
3005         return p;
3006     }
3007 }
3008
3009 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
3010 {
3011     if ( bmp.IsOk() )
3012     {
3013         wxGraphicsBitmap p;
3014         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );
3015         return p;
3016     }
3017     else
3018         return wxNullGraphicsBitmap;
3019 }
3020
3021 #if wxUSE_IMAGE
3022
3023 wxGraphicsBitmap
3024 wxMacCoreGraphicsRenderer::CreateBitmapFromImage(const wxImage& image)
3025 {
3026     // We don't have any direct way to convert wxImage to CGImage so pass by
3027     // wxBitmap. This makes this function pretty useless in this implementation
3028     // but it allows to have the same API as with Cairo backend where we can
3029     // convert wxImage to a Cairo surface directly, bypassing wxBitmap.
3030     return CreateBitmap(wxBitmap(image));
3031 }
3032
3033 #endif // wxUSE_IMAGE
3034
3035 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
3036 {
3037     if ( bitmap != NULL )
3038     {
3039         wxGraphicsBitmap p;
3040         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , (CGImageRef) bitmap, false ));
3041         return p;
3042     }
3043     else
3044         return wxNullGraphicsBitmap;
3045 }
3046
3047 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h  )
3048 {
3049     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
3050     CGImageRef img = refdata->GetBitmap();
3051     if ( img )
3052     {
3053         wxGraphicsBitmap p;
3054         CGImageRef subimg = CGImageCreateWithImageInRect(img,CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h ));
3055         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , subimg, refdata->IsMonochrome() ) );
3056         return p;
3057     }
3058     else
3059         return wxNullGraphicsBitmap;
3060 }
3061
3062 wxGraphicsBrush
3063 wxMacCoreGraphicsRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
3064                                                      wxDouble x2, wxDouble y2,
3065                                                      const wxGraphicsGradientStops& stops)
3066 {
3067     wxGraphicsBrush p;
3068     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
3069     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
3070     p.SetRefData(d);
3071     return p;
3072 }
3073
3074 wxGraphicsBrush
3075 wxMacCoreGraphicsRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
3076                                                      wxDouble xc, wxDouble yc,
3077                                                      wxDouble radius,
3078                                                      const wxGraphicsGradientStops& stops)
3079 {
3080     wxGraphicsBrush p;
3081     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
3082     d->CreateRadialGradientBrush(xo, yo, xc, yc, radius, stops);
3083     p.SetRefData(d);
3084     return p;
3085 }
3086
3087 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
3088 {
3089     if ( font.IsOk() )
3090     {
3091         wxGraphicsFont p;
3092         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
3093         return p;
3094     }
3095     else
3096         return wxNullGraphicsFont;
3097 }
3098
3099 wxGraphicsFont
3100 wxMacCoreGraphicsRenderer::CreateFont(double sizeInPixels,
3101                                       const wxString& facename,
3102                                       int flags,
3103                                       const wxColour& col)
3104 {
3105     // This implementation is not ideal as we don't support fractional font
3106     // sizes right now, but it's the simplest one.
3107     //
3108     // Notice that under Mac we always use 72 DPI so the font size in pixels is
3109     // the same as the font size in points and we can pass it directly to wxFont
3110     // ctor.
3111     wxFont font(wxRound(sizeInPixels),
3112                 wxFONTFAMILY_DEFAULT,
3113                 flags & wxFONTFLAG_ITALIC ? wxFONTSTYLE_ITALIC
3114                                           : wxFONTSTYLE_NORMAL,
3115                 flags & wxFONTFLAG_BOLD ? wxFONTWEIGHT_BOLD
3116                                         : wxFONTWEIGHT_NORMAL,
3117                 (flags & wxFONTFLAG_UNDERLINED) != 0,
3118                 facename);
3119
3120     wxGraphicsFont f;
3121     f.SetRefData(new wxMacCoreGraphicsFontData(this, font, col));
3122     return f;
3123 }
3124
3125 //
3126 // CoreGraphics Helper Methods
3127 //
3128
3129 // Data Providers and Consumers
3130
3131 size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
3132 {
3133     CFMutableDataRef data = (CFMutableDataRef) info;
3134     if ( data )
3135     {
3136         CFDataAppendBytes( data, (const UInt8*) bytes, count );
3137     }
3138     return count;
3139 }
3140
3141 void wxMacReleaseCFDataProviderCallback(void *info,
3142                                       const void *WXUNUSED(data),
3143                                       size_t WXUNUSED(count))
3144 {
3145     if ( info )
3146         CFRelease( (CFDataRef) info );
3147 }
3148
3149 void wxMacReleaseCFDataConsumerCallback( void *info )
3150 {
3151     if ( info )
3152         CFRelease( (CFDataRef) info );
3153 }
3154
3155 CGDataProviderRef wxMacCGDataProviderCreateWithCFData( CFDataRef data )
3156 {
3157     if ( data == NULL )
3158         return NULL;
3159
3160     return CGDataProviderCreateWithCFData( data );
3161 }
3162
3163 CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data )
3164 {
3165     if ( data == NULL )
3166         return NULL;
3167
3168     return CGDataConsumerCreateWithCFData( data );
3169 }
3170
3171 void
3172 wxMacReleaseMemoryBufferProviderCallback(void *info,
3173                                          const void * WXUNUSED_UNLESS_DEBUG(data),
3174                                          size_t WXUNUSED(size))
3175 {
3176     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
3177
3178     wxASSERT( data == membuf->GetData() ) ;
3179
3180     delete membuf ;
3181 }
3182
3183 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf )
3184 {
3185     wxMemoryBuffer* b = new wxMemoryBuffer( buf );
3186     if ( b->GetDataLen() == 0 )
3187         return NULL;
3188
3189     return CGDataProviderCreateWithData( b , (const void *) b->GetData() , b->GetDataLen() ,
3190                                                  wxMacReleaseMemoryBufferProviderCallback );
3191 }