src/osx/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/graphics.cpp
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/graphics.h"
  15 #include "wx/private/graphics.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/dcclient.h"
  19     #include "wx/dcmemory.h"
  20     #include "wx/dcprint.h"
  21     #include "wx/log.h"
  22     #include "wx/region.h"
  23     #include "wx/image.h"
  24     #include "wx/icon.h"
  25 #endif
  26
  27
  28 #ifdef __MSL__
  29     #if __MSL__ >= 0x6000
  30         #include "math.h"
  31         // in case our functions were defined outside std, we make it known all the same
  32         namespace std { }
  33         using namespace std;
  34     #endif
  35 #endif
  36
  37 #ifdef __WXMAC__
  38     #include "wx/osx/private.h"
  39     #include "wx/osx/dcprint.h"
  40     #include "wx/osx/dcclient.h"
  41     #include "wx/osx/dcmemory.h"
  42     #include "wx/osx/private.h"
  43 #else
  44     #include "CoreServices/CoreServices.h"
  45     #include "ApplicationServices/ApplicationServices.h"
  46     #include "wx/osx/core/cfstring.h"
  47     #include "wx/cocoa/dcclient.h"
  48 #endif
  49
  50 #ifdef __WXCOCOA__
  51
  52 CGColorSpaceRef wxMacGetGenericRGBColorSpace()
  53 {
  54     static wxCFRef<CGColorSpaceRef> genericRGBColorSpace;
  55
  56     if (genericRGBColorSpace == NULL)
  57     {
  58         genericRGBColorSpace.reset( CGColorSpaceCreateWithName( kCGColorSpaceGenericRGB ) );
  59     }
  60
  61     return genericRGBColorSpace;
  62 }
  63
  64 int UMAGetSystemVersion()
  65 {
  66     return 0x1050;
  67 }
  68
  69
  70 #define wxOSX_USE_CORE_TEXT 1
  71
  72 #endif
  73
  74 #if wxOSX_USE_COCOA_OR_IPHONE
  75 extern CGContextRef wxOSXGetContextFromCurrentContext() ;
  76 #if wxOSX_USE_COCOA
  77 extern bool wxOSXLockFocus( WXWidget view) ;
  78 extern void wxOSXUnlockFocus( WXWidget view) ;
  79 #endif
  80 #endif
  81
  82 #if 1 // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
  83
  84 // TODO test whether this private API also works under 10.3
  85
  86 // copying values from NSCompositingModes (see also webkit and cairo sources)
  87
  88 typedef enum CGCompositeOperation {
  89    kCGCompositeOperationClear           = 0,
  90    kCGCompositeOperationCopy            = 1,
  91    kCGCompositeOperationSourceOver      = 2,
  92    kCGCompositeOperationSourceIn        = 3,
  93    kCGCompositeOperationSourceOut       = 4,
  94    kCGCompositeOperationSourceAtop      = 5,
  95    kCGCompositeOperationDestinationOver = 6,
  96    kCGCompositeOperationDestinationIn   = 7,
  97    kCGCompositeOperationDestinationOut  = 8,
  98    kCGCompositeOperationDestinationAtop = 9,
  99    kCGCompositeOperationXOR             = 10,
 100    kCGCompositeOperationPlusDarker      = 11,
 101 // NS only, unsupported by CG : Highlight
 102    kCGCompositeOperationPlusLighter     = 12
 103 } CGCompositeOperation ;
 104
 105 extern "C"
 106 {
 107    CG_EXTERN void CGContextSetCompositeOperation (CGContextRef context, int operation);
 108 } ;
 109
 110 #endif
 111
 112 //-----------------------------------------------------------------------------
 113 // constants
 114 //-----------------------------------------------------------------------------
 115
 116 #ifndef M_PI
 117 const double M_PI = 3.14159265358979;
 118 #endif
 119
 120 static const double RAD2DEG = 180.0 / M_PI;
 121
 122 //
 123 // Pen, Brushes and Fonts
 124 //
 125
 126 #pragma mark -
 127 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
 128
 129 OSStatus wxMacDrawCGImage(
 130                   CGContextRef    inContext,
 131                   const CGRect *  inBounds,
 132                   CGImageRef      inImage)
 133 {
 134 #if wxOSX_USE_CARBON
 135     return HIViewDrawCGImage( inContext, inBounds, inImage );
 136 #else
 137     CGContextSaveGState(inContext);
 138     CGContextTranslateCTM(inContext, inBounds->origin.x, inBounds->origin.y + inBounds->size.height);
 139     CGRect r = *inBounds;
 140     r.origin.x = r.origin.y = 0;
 141     CGContextScaleCTM(inContext, 1, -1);
 142     CGContextDrawImage(inContext, r, inImage );
 143     CGContextRestoreGState(inContext);
 144     return noErr;
 145 #endif
 146 }
 147
 148 CGColorRef wxMacCreateCGColor( const wxColour& col )
 149 {
 150     CGColorRef retval = 0;
 151 #ifdef __WXMAC__
 152     retval = col.CreateCGColor();
 153 #else
 154 // TODO add conversion NSColor - CGColorRef (obj-c)
 155 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 156     if ( CGColorCreateGenericRGB )
 157         retval = CGColorCreateGenericRGB( col.Red() / 255.0 , col.Green() / 255.0, col.Blue() / 255.0, col.Alpha() / 255.0 );
 158     else
 159 #endif
 160     {
 161         CGFloat components[4] = { col.Red() / 255.0, col.Green() / 255.0, col.Blue()  / 255.0, col.Alpha() / 255.0 } ;
 162         retval = CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ;
 163     }
 164
 165 #endif
 166     wxASSERT(retval != NULL);
 167     return retval;
 168 }
 169
 170 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 && wxOSX_USE_CORE_TEXT
 171
 172 CTFontRef wxMacCreateCTFont( const wxFont& font )
 173 {
 174 #ifdef __WXMAC__
 175     return wxCFRetain((CTFontRef) font.OSXGetCTFont());
 176 #else
 177     return CTFontCreateWithName( wxCFStringRef( font.GetFaceName(), wxLocale::GetSystemEncoding() ) , font.GetPointSize() , NULL );
 178 #endif
 179 }
 180
 181 #endif
 182
 183 // CGPattern wrapper class: always allocate on heap, never call destructor
 184
 185 class wxMacCoreGraphicsPattern
 186 {
 187 public :
 188     wxMacCoreGraphicsPattern() {}
 189
 190     // is guaranteed to be called only with a non-Null CGContextRef
 191     virtual void Render( CGContextRef ctxRef ) = 0;
 192
 193     operator CGPatternRef() const { return m_patternRef; }
 194
 195 protected :
 196     virtual ~wxMacCoreGraphicsPattern()
 197     {
 198         // as this is called only when the m_patternRef is been released;
 199         // don't release it again
 200     }
 201
 202     static void _Render( void *info, CGContextRef ctxRef )
 203     {
 204         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 205         if ( self && ctxRef )
 206             self->Render( ctxRef );
 207     }
 208
 209     static void _Dispose( void *info )
 210     {
 211         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 212         delete self;
 213     }
 214
 215     CGPatternRef m_patternRef;
 216
 217     static const CGPatternCallbacks ms_Callbacks;
 218 };
 219
 220 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
 221
 222 class ImagePattern : public wxMacCoreGraphicsPattern
 223 {
 224 public :
 225     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 226     {
 227         wxASSERT( bmp && bmp->IsOk() );
 228 #ifdef __WXMAC__
 229         Init( (CGImageRef) bmp->CreateCGImage() , transform );
 230 #endif
 231     }
 232
 233     // ImagePattern takes ownership of CGImageRef passed in
 234     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 235     {
 236         if ( image )
 237             CFRetain( image );
 238
 239         Init( image , transform );
 240     }
 241
 242     virtual void Render( CGContextRef ctxRef )
 243     {
 244         if (m_image != NULL)
 245             wxMacDrawCGImage( ctxRef, &m_imageBounds, m_image );
 246     }
 247
 248 protected :
 249     void Init( CGImageRef image, const CGAffineTransform& transform )
 250     {
 251         m_image = image;
 252         if ( m_image )
 253         {
 254             m_imageBounds = CGRectMake( (CGFloat) 0.0, (CGFloat) 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 255             m_patternRef = CGPatternCreate(
 256                 this , m_imageBounds, transform ,
 257                 m_imageBounds.size.width, m_imageBounds.size.height,
 258                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 259         }
 260     }
 261
 262     virtual ~ImagePattern()
 263     {
 264         if ( m_image )
 265             CGImageRelease( m_image );
 266     }
 267
 268     CGImageRef m_image;
 269     CGRect m_imageBounds;
 270 };
 271
 272 class HatchPattern : public wxMacCoreGraphicsPattern
 273 {
 274 public :
 275     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 276     {
 277         m_hatch = hatchstyle;
 278         m_imageBounds = CGRectMake( (CGFloat) 0.0, (CGFloat) 0.0, (CGFloat) 8.0 , (CGFloat) 8.0 );
 279         m_patternRef = CGPatternCreate(
 280             this , m_imageBounds, transform ,
 281             m_imageBounds.size.width, m_imageBounds.size.height,
 282             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 283     }
 284
 285     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 286     {
 287         CGContextStrokeLineSegments( ctxRef , pts , count );
 288     }
 289
 290     virtual void Render( CGContextRef ctxRef )
 291     {
 292         switch ( m_hatch )
 293         {
 294             case wxBDIAGONAL_HATCH :
 295                 {
 296                     CGPoint pts[] =
 297                     {
 298                     { (CGFloat) 8.0 , (CGFloat) 0.0 } , { (CGFloat) 0.0 , (CGFloat) 8.0 }
 299                     };
 300                     StrokeLineSegments( ctxRef , pts , 2 );
 301                 }
 302                 break;
 303
 304             case wxCROSSDIAG_HATCH :
 305                 {
 306                     CGPoint pts[] =
 307                     {
 308                         { (CGFloat) 0.0 , (CGFloat) 0.0 } , { (CGFloat) 8.0 , (CGFloat) 8.0 } ,
 309                         { (CGFloat) 8.0 , (CGFloat) 0.0 } , { (CGFloat) 0.0 , (CGFloat) 8.0 }
 310                     };
 311                     StrokeLineSegments( ctxRef , pts , 4 );
 312                 }
 313                 break;
 314
 315             case wxFDIAGONAL_HATCH :
 316                 {
 317                     CGPoint pts[] =
 318                     {
 319                     { (CGFloat) 0.0 , (CGFloat) 0.0 } , { (CGFloat) 8.0 , (CGFloat) 8.0 }
 320                     };
 321                     StrokeLineSegments( ctxRef , pts , 2 );
 322                 }
 323                 break;
 324
 325             case wxCROSS_HATCH :
 326                 {
 327                     CGPoint pts[] =
 328                     {
 329                     { (CGFloat) 0.0 , (CGFloat) 4.0 } , { (CGFloat) 8.0 , (CGFloat) 4.0 } ,
 330                     { (CGFloat) 4.0 , (CGFloat) 0.0 } , { (CGFloat) 4.0 , (CGFloat) 8.0 } ,
 331                     };
 332                     StrokeLineSegments( ctxRef , pts , 4 );
 333                 }
 334                 break;
 335
 336             case wxHORIZONTAL_HATCH :
 337                 {
 338                     CGPoint pts[] =
 339                     {
 340                     { (CGFloat) 0.0 , (CGFloat) 4.0 } , { (CGFloat) 8.0 , (CGFloat) 4.0 } ,
 341                     };
 342                     StrokeLineSegments( ctxRef , pts , 2 );
 343                 }
 344                 break;
 345
 346             case wxVERTICAL_HATCH :
 347                 {
 348                     CGPoint pts[] =
 349                     {
 350                     { (CGFloat) 4.0 , (CGFloat) 0.0 } , { (CGFloat) 4.0 , (CGFloat) 8.0 } ,
 351                     };
 352                     StrokeLineSegments( ctxRef , pts , 2 );
 353                 }
 354                 break;
 355
 356             default:
 357                 break;
 358         }
 359     }
 360
 361 protected :
 362     virtual ~HatchPattern() {}
 363
 364     CGRect      m_imageBounds;
 365     int         m_hatch;
 366 };
 367
 368 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 369 {
 370 public:
 371     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 372     ~wxMacCoreGraphicsPenData();
 373
 374     void Init();
 375     virtual void Apply( wxGraphicsContext* context );
 376     virtual wxDouble GetWidth() { return m_width; }
 377
 378 protected :
 379     CGLineCap m_cap;
 380     wxCFRef<CGColorRef> m_color;
 381     wxCFRef<CGColorSpaceRef> m_colorSpace;
 382
 383     CGLineJoin m_join;
 384     CGFloat m_width;
 385
 386     int m_count;
 387     const CGFloat *m_lengths;
 388     CGFloat *m_userLengths;
 389
 390
 391     bool m_isPattern;
 392     wxCFRef<CGPatternRef> m_pattern;
 393     CGFloat* m_patternColorComponents;
 394 };
 395
 396 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 397     wxGraphicsObjectRefData( renderer )
 398 {
 399     Init();
 400
 401     m_color.reset( wxMacCreateCGColor( pen.GetColour() ) ) ;
 402
 403     // TODO: * m_dc->m_scaleX
 404     m_width = pen.GetWidth();
 405     if (m_width <= 0.0)
 406         m_width = (CGFloat) 0.1;
 407
 408     switch ( pen.GetCap() )
 409     {
 410         case wxCAP_ROUND :
 411             m_cap = kCGLineCapRound;
 412             break;
 413
 414         case wxCAP_PROJECTING :
 415             m_cap = kCGLineCapSquare;
 416             break;
 417
 418         case wxCAP_BUTT :
 419             m_cap = kCGLineCapButt;
 420             break;
 421
 422         default :
 423             m_cap = kCGLineCapButt;
 424             break;
 425     }
 426
 427     switch ( pen.GetJoin() )
 428     {
 429         case wxJOIN_BEVEL :
 430             m_join = kCGLineJoinBevel;
 431             break;
 432
 433         case wxJOIN_MITER :
 434             m_join = kCGLineJoinMiter;
 435             break;
 436
 437         case wxJOIN_ROUND :
 438             m_join = kCGLineJoinRound;
 439             break;
 440
 441         default :
 442             m_join = kCGLineJoinMiter;
 443             break;
 444     }
 445
 446     const CGFloat dashUnit = m_width < 1.0 ? (CGFloat) 1.0 : m_width;
 447
 448     const CGFloat dotted[] = { (CGFloat) dashUnit , (CGFloat) (dashUnit + 2.0) };
 449     static const CGFloat short_dashed[] = { (CGFloat) 9.0 , (CGFloat) 6.0 };
 450     static const CGFloat dashed[] = { (CGFloat) 19.0 , (CGFloat) 9.0 };
 451     static const CGFloat dotted_dashed[] = { (CGFloat) 9.0 , (CGFloat) 6.0 , (CGFloat) 3.0 , (CGFloat) 3.0 };
 452
 453     switch ( pen.GetStyle() )
 454     {
 455         case wxPENSTYLE_SOLID:
 456             break;
 457
 458         case wxPENSTYLE_DOT:
 459             m_count = WXSIZEOF(dotted);
 460             m_userLengths = new CGFloat[ m_count ] ;
 461             memcpy( m_userLengths, dotted, sizeof(dotted) );
 462             m_lengths = m_userLengths;
 463             break;
 464
 465         case wxPENSTYLE_LONG_DASH:
 466             m_count = WXSIZEOF(dashed);
 467             m_lengths = dashed;
 468             break;
 469
 470         case wxPENSTYLE_SHORT_DASH:
 471             m_count = WXSIZEOF(short_dashed);
 472             m_lengths = short_dashed;
 473             break;
 474
 475         case wxPENSTYLE_DOT_DASH:
 476             m_count = WXSIZEOF(dotted_dashed);
 477             m_lengths = dotted_dashed;
 478             break;
 479
 480         case wxPENSTYLE_USER_DASH:
 481             wxDash *dashes;
 482             m_count = pen.GetDashes( &dashes );
 483             if ((dashes != NULL) && (m_count > 0))
 484             {
 485                 m_userLengths = new CGFloat[m_count];
 486                 for ( int i = 0; i < m_count; ++i )
 487                 {
 488                     m_userLengths[i] = dashes[i] * dashUnit;
 489
 490                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 491                         m_userLengths[i] = (CGFloat) (dashUnit + 2.0);
 492                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 493                         m_userLengths[i] = dashUnit;
 494                 }
 495             }
 496             m_lengths = m_userLengths;
 497             break;
 498
 499         case wxPENSTYLE_STIPPLE:
 500             {
 501                 wxBitmap* bmp = pen.GetStipple();
 502                 if ( bmp && bmp->IsOk() )
 503                 {
 504                     m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 505                     m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 506                     m_patternColorComponents = new CGFloat[1] ;
 507                     m_patternColorComponents[0] = (CGFloat) 1.0;
 508                     m_isPattern = true;
 509                 }
 510             }
 511             break;
 512
 513         default :
 514             {
 515                 m_isPattern = true;
 516                 m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 517                 m_pattern.reset( (CGPatternRef) *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 518                 m_patternColorComponents = new CGFloat[4] ;
 519                 m_patternColorComponents[0] = (CGFloat) (pen.GetColour().Red() / 255.0);
 520                 m_patternColorComponents[1] = (CGFloat) (pen.GetColour().Green() / 255.0);
 521                 m_patternColorComponents[2] = (CGFloat) (pen.GetColour().Blue() / 255.0);
 522                 m_patternColorComponents[3] =  (CGFloat) (pen.GetColour().Alpha() / 255.0);
 523             }
 524             break;
 525     }
 526     if ((m_lengths != NULL) && (m_count > 0))
 527     {
 528         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 529         m_cap = kCGLineCapButt;
 530     }
 531 }
 532
 533 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 534 {
 535     delete[] m_userLengths;
 536     delete[] m_patternColorComponents;
 537 }
 538
 539 void wxMacCoreGraphicsPenData::Init()
 540 {
 541     m_lengths = NULL;
 542     m_userLengths = NULL;
 543     m_width = 0;
 544     m_count = 0;
 545     m_patternColorComponents = NULL;
 546     m_isPattern = false;
 547 }
 548
 549 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 550 {
 551     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 552     CGContextSetLineWidth( cg , m_width );
 553     CGContextSetLineJoin( cg , m_join );
 554
 555     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 556     CGContextSetLineCap( cg , m_cap );
 557
 558     if ( m_isPattern )
 559     {
 560         CGAffineTransform matrix = CGContextGetCTM( cg );
 561         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 562         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 563         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 564     }
 565     else
 566     {
 567         CGContextSetStrokeColorWithColor( cg , m_color );
 568     }
 569 }
 570
 571 //
 572 // Brush
 573 //
 574
 575 // make sure we all use one class for all conversions from wx to native colour
 576
 577 class wxMacCoreGraphicsColour
 578 {
 579     public:
 580         wxMacCoreGraphicsColour();
 581         wxMacCoreGraphicsColour(const wxBrush &brush);
 582         ~wxMacCoreGraphicsColour();
 583
 584         void Apply( CGContextRef cgContext );
 585     protected:
 586         void Init();
 587         wxCFRef<CGColorRef> m_color;
 588         wxCFRef<CGColorSpaceRef> m_colorSpace;
 589
 590         bool m_isPattern;
 591         wxCFRef<CGPatternRef> m_pattern;
 592         CGFloat* m_patternColorComponents;
 593 } ;
 594
 595 wxMacCoreGraphicsColour::~wxMacCoreGraphicsColour()
 596 {
 597     delete[] m_patternColorComponents;
 598 }
 599
 600 void wxMacCoreGraphicsColour::Init()
 601 {
 602     m_isPattern = false;
 603     m_patternColorComponents = NULL;
 604 }
 605
 606 void wxMacCoreGraphicsColour::Apply( CGContextRef cgContext )
 607 {
 608     if ( m_isPattern )
 609     {
 610         CGAffineTransform matrix = CGContextGetCTM( cgContext );
 611         CGContextSetPatternPhase( cgContext, CGSizeMake(matrix.tx, matrix.ty) );
 612         CGContextSetFillColorSpace( cgContext , m_colorSpace );
 613         CGContextSetFillPattern( cgContext, m_pattern , m_patternColorComponents );
 614     }
 615     else
 616     {
 617         CGContextSetFillColorWithColor( cgContext, m_color );
 618     }
 619 }
 620
 621 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour()
 622 {
 623     Init();
 624 }
 625
 626 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
 627 {
 628     Init();
 629     if ( brush.GetStyle() == wxSOLID )
 630     {
 631         m_color.reset( wxMacCreateCGColor( brush.GetColour() ));
 632     }
 633     else if ( brush.IsHatch() )
 634     {
 635         m_isPattern = true;
 636         m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 637         m_pattern.reset( (CGPatternRef) *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 638
 639         m_patternColorComponents = new CGFloat[4] ;
 640         m_patternColorComponents[0] = (CGFloat) (brush.GetColour().Red() / 255.0);
 641         m_patternColorComponents[1] = (CGFloat) (brush.GetColour().Green() / 255.0);
 642         m_patternColorComponents[2] = (CGFloat) (brush.GetColour().Blue() / 255.0);
 643         m_patternColorComponents[3] = (CGFloat) (brush.GetColour().Alpha() / 255.0);
 644     }
 645     else
 646     {
 647         // now brush is a bitmap
 648         wxBitmap* bmp = brush.GetStipple();
 649         if ( bmp && bmp->IsOk() )
 650         {
 651             m_isPattern = true;
 652             m_patternColorComponents = new CGFloat[1] ;
 653             m_patternColorComponents[0] = (CGFloat) 1.0;
 654             m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 655             m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 656         }
 657     }
 658 }
 659
 660 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 661 {
 662 public:
 663     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 664     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 665     ~wxMacCoreGraphicsBrushData ();
 666
 667     virtual void Apply( wxGraphicsContext* context );
 668     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 669                                    wxDouble x2, wxDouble y2,
 670                                    const wxGraphicsGradientStops& stops);
 671     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 672                                    wxDouble xc, wxDouble yc, wxDouble radius,
 673                                    const wxGraphicsGradientStops& stops);
 674
 675     virtual bool IsShading() { return m_isShading; }
 676     CGShadingRef GetShading() { return m_shading; }
 677 protected:
 678     CGFunctionRef CreateGradientFunction(const wxGraphicsGradientStops& stops);
 679
 680     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 681     virtual void Init();
 682
 683     wxMacCoreGraphicsColour m_cgColor;
 684
 685     bool m_isShading;
 686     CGFunctionRef m_gradientFunction;
 687     CGShadingRef m_shading;
 688
 689     // information about a single gradient component
 690     struct GradientComponent
 691     {
 692         CGFloat pos;
 693         CGFloat red;
 694         CGFloat green;
 695         CGFloat blue;
 696         CGFloat alpha;
 697     };
 698
 699     // and information about all of them
 700     struct GradientComponents
 701     {
 702         GradientComponents()
 703         {
 704             count = 0;
 705             comps = NULL;
 706         }
 707
 708         void Init(unsigned count_)
 709         {
 710             count = count_;
 711             comps = new GradientComponent[count];
 712         }
 713
 714         ~GradientComponents()
 715         {
 716             delete [] comps;
 717         }
 718
 719         unsigned count;
 720         GradientComponent *comps;
 721     };
 722
 723     GradientComponents m_gradientComponents;
 724 };
 725
 726 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 727 {
 728     Init();
 729 }
 730
 731 void
 732 wxMacCoreGraphicsBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 733                                                       wxDouble x2, wxDouble y2,
 734                                                       const wxGraphicsGradientStops& stops)
 735 {
 736     m_gradientFunction = CreateGradientFunction(stops);
 737     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) x1, (CGFloat) y1),
 738                                         CGPointMake((CGFloat) x2,(CGFloat) y2), m_gradientFunction, true, true ) ;
 739     m_isShading = true ;
 740 }
 741
 742 void
 743 wxMacCoreGraphicsBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 744                                                       wxDouble xc, wxDouble yc,
 745                                                       wxDouble radius,
 746                                                       const wxGraphicsGradientStops& stops)
 747 {
 748     m_gradientFunction = CreateGradientFunction(stops);
 749     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) xo,(CGFloat) yo), 0,
 750                                         CGPointMake((CGFloat) xc,(CGFloat) yc), (CGFloat) radius, m_gradientFunction, true, true ) ;
 751     m_isShading = true ;
 752 }
 753
 754 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer ),
 755     m_cgColor( brush )
 756 {
 757     Init();
 758
 759 }
 760
 761 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 762 {
 763     if ( m_shading )
 764         CGShadingRelease(m_shading);
 765
 766     if( m_gradientFunction )
 767         CGFunctionRelease(m_gradientFunction);
 768 }
 769
 770 void wxMacCoreGraphicsBrushData::Init()
 771 {
 772     m_gradientFunction = NULL;
 773     m_shading = NULL;
 774     m_isShading = false;
 775 }
 776
 777 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 778 {
 779     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 780
 781     if ( m_isShading )
 782     {
 783         // nothing to set as shades are processed by clipping using the path and filling
 784     }
 785     else
 786     {
 787         m_cgColor.Apply( cg );
 788     }
 789 }
 790
 791 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 792 {
 793     const GradientComponents& stops = *(GradientComponents*) info ;
 794
 795     CGFloat f = *in;
 796     if (f <= 0.0)
 797     {
 798         // Start
 799         out[0] = stops.comps[0].red;
 800         out[1] = stops.comps[0].green;
 801         out[2] = stops.comps[0].blue;
 802         out[3] = stops.comps[0].alpha;
 803     }
 804     else if (f >= 1.0)
 805     {
 806         // end
 807         out[0] = stops.comps[stops.count - 1].red;
 808         out[1] = stops.comps[stops.count - 1].green;
 809         out[2] = stops.comps[stops.count - 1].blue;
 810         out[3] = stops.comps[stops.count - 1].alpha;
 811     }
 812     else
 813     {
 814         // Find first component with position greater than f
 815         unsigned i;
 816         for ( i = 0; i < stops.count; i++ )
 817         {
 818             if (stops.comps[i].pos > f)
 819                 break;
 820         }
 821
 822         // Interpolated between stops
 823         CGFloat diff = (f - stops.comps[i-1].pos);
 824         CGFloat range = (stops.comps[i].pos - stops.comps[i-1].pos);
 825         CGFloat fact = diff / range;
 826
 827         out[0] = stops.comps[i - 1].red + (stops.comps[i].red - stops.comps[i - 1].red) * fact;
 828         out[1] = stops.comps[i - 1].green + (stops.comps[i].green - stops.comps[i - 1].green) * fact;
 829         out[2] = stops.comps[i - 1].blue + (stops.comps[i].blue - stops.comps[i - 1].blue) * fact;
 830         out[3] = stops.comps[i - 1].alpha + (stops.comps[i].alpha - stops.comps[i - 1].alpha) * fact;
 831     }
 832 }
 833
 834 CGFunctionRef
 835 wxMacCoreGraphicsBrushData::CreateGradientFunction(const wxGraphicsGradientStops& stops)
 836 {
 837
 838     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 839     static const CGFloat input_value_range [2] = { 0, 1 };
 840     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 841
 842     m_gradientComponents.Init(stops.GetCount());
 843     for ( unsigned i = 0; i < m_gradientComponents.count; i++ )
 844     {
 845         const wxGraphicsGradientStop stop = stops.Item(i);
 846
 847         m_gradientComponents.comps[i].pos = stop.GetPosition();
 848
 849         const wxColour col = stop.GetColour();
 850         m_gradientComponents.comps[i].red = (CGFloat) (col.Red() / 255.0);
 851         m_gradientComponents.comps[i].green = (CGFloat) (col.Green() / 255.0);
 852         m_gradientComponents.comps[i].blue = (CGFloat) (col.Blue() / 255.0);
 853         m_gradientComponents.comps[i].alpha = (CGFloat) (col.Alpha() / 255.0);
 854     }
 855
 856     return CGFunctionCreate ( &m_gradientComponents,  1,
 857                             input_value_range,
 858                             4,
 859                             output_value_ranges,
 860                             &callbacks);
 861 }
 862
 863 //
 864 // Font
 865 //
 866
 867 #if wxOSX_USE_IPHONE
 868
 869 extern UIFont* CreateUIFont( const wxFont& font );
 870 extern void DrawTextInContext( CGContextRef context, CGPoint where, UIFont *font, NSString* text );
 871 extern CGSize MeasureTextInContext( UIFont *font, NSString* text );
 872
 873 #endif
 874
 875 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 876 {
 877 public:
 878     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 879     ~wxMacCoreGraphicsFontData();
 880
 881 #if wxOSX_USE_ATSU_TEXT
 882     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 883 #endif
 884 #if wxOSX_USE_CORE_TEXT
 885     CTFontRef OSXGetCTFont() const { return m_ctFont ; }
 886 #endif
 887     wxColour GetColour() const { return m_colour ; }
 888
 889     bool GetUnderlined() const { return m_underlined ; }
 890 #if wxOSX_USE_IPHONE
 891     UIFont* GetUIFont() const { return m_uiFont; }
 892 #endif
 893 private :
 894     wxColour m_colour;
 895     bool m_underlined;
 896 #if wxOSX_USE_ATSU_TEXT
 897     ATSUStyle m_macATSUIStyle;
 898 #endif
 899 #if wxOSX_USE_CORE_TEXT
 900     wxCFRef< CTFontRef > m_ctFont;
 901 #endif
 902 #if wxOSX_USE_IPHONE
 903     UIFont*  m_uiFont;
 904 #endif
 905 };
 906
 907 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 908 {
 909     m_colour = col;
 910     m_underlined = font.GetUnderlined();
 911
 912 #if wxOSX_USE_CORE_TEXT
 913     m_ctFont.reset( wxMacCreateCTFont( font ) );
 914 #endif
 915 #if wxOSX_USE_IPHONE
 916     m_uiFont = CreateUIFont(font);
 917     wxMacCocoaRetain( m_uiFont );
 918 #endif
 919 #if wxOSX_USE_ATSU_TEXT
 920     OSStatus status = noErr;
 921     m_macATSUIStyle = NULL;
 922
 923     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 924
 925     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 926
 927     // we need the scale here ...
 928
 929     Fixed atsuSize = IntToFixed( int( 1 * font.GetPointSize()) );
 930     RGBColor atsuColor ;
 931     col.GetRGBColor( &atsuColor );
 932     ATSUAttributeTag atsuTags[] =
 933     {
 934             kATSUSizeTag ,
 935             kATSUColorTag ,
 936     };
 937     ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
 938     {
 939             sizeof( Fixed ) ,
 940             sizeof( RGBColor ) ,
 941     };
 942     ATSUAttributeValuePtr atsuValues[WXSIZEOF(atsuTags)] =
 943     {
 944             &atsuSize ,
 945             &atsuColor ,
 946     };
 947
 948     status = ::ATSUSetAttributes(
 949         m_macATSUIStyle, WXSIZEOF(atsuTags),
 950         atsuTags, atsuSizes, atsuValues);
 951
 952     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 953 #endif
 954 }
 955
 956 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 957 {
 958 #if wxOSX_USE_CORE_TEXT
 959 #endif
 960 #if wxOSX_USE_ATSU_TEXT
 961     if ( m_macATSUIStyle )
 962     {
 963         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 964         m_macATSUIStyle = NULL;
 965     }
 966 #endif
 967 #if wxOSX_USE_IPHONE
 968     wxMacCocoaRelease( m_uiFont );
 969 #endif
 970 }
 971
 972 class wxMacCoreGraphicsBitmapData : public wxGraphicsBitmapData
 973 {
 974 public:
 975     wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome );
 976     ~wxMacCoreGraphicsBitmapData();
 977
 978     virtual CGImageRef GetBitmap() { return m_bitmap; }
 979     virtual void* GetNativeBitmap() const { 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 ) : wxGraphicsBitmapData( renderer ),
 995     m_bitmap(bitmap), m_monochrome(monochrome)
 996 {
 997 }
 998
 999 wxMacCoreGraphicsBitmapData::~wxMacCoreGraphicsBitmapData()
1000 {
1001     CGImageRelease( m_bitmap );
1002 }
1003
1004
1005 //
1006 // Graphics Matrix
1007 //
1008
1009 //-----------------------------------------------------------------------------
1010 // wxMacCoreGraphicsMatrix declaration
1011 //-----------------------------------------------------------------------------
1012
1013 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
1014 {
1015 public :
1016     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
1017
1018     virtual ~wxMacCoreGraphicsMatrixData() ;
1019
1020     virtual wxGraphicsObjectRefData *Clone() const ;
1021
1022     // concatenates the matrix
1023     virtual void Concat( const wxGraphicsMatrixData *t );
1024
1025     // sets the matrix to the respective values
1026     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1027         wxDouble tx=0.0, wxDouble ty=0.0);
1028
1029     // gets the component valuess of the matrix
1030     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
1031                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
1032
1033     // makes this the inverse matrix
1034     virtual void Invert();
1035
1036     // returns true if the elements of the transformation matrix are equal ?
1037     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
1038
1039     // return true if this is the identity matrix
1040     virtual bool IsIdentity() const;
1041
1042     //
1043     // transformation
1044     //
1045
1046     // add the translation to this matrix
1047     virtual void Translate( wxDouble dx , wxDouble dy );
1048
1049     // add the scale to this matrix
1050     virtual void Scale( wxDouble xScale , wxDouble yScale );
1051
1052     // add the rotation to this matrix (radians)
1053     virtual void Rotate( wxDouble angle );
1054
1055     //
1056     // apply the transforms
1057     //
1058
1059     // applies that matrix to the point
1060     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
1061
1062     // applies the matrix except for translations
1063     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
1064
1065     // returns the native representation
1066     virtual void * GetNativeMatrix() const;
1067
1068 private :
1069     CGAffineTransform m_matrix;
1070 } ;
1071
1072 //-----------------------------------------------------------------------------
1073 // wxMacCoreGraphicsMatrix implementation
1074 //-----------------------------------------------------------------------------
1075
1076 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
1077 {
1078 }
1079
1080 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
1081 {
1082 }
1083
1084 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
1085 {
1086     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
1087     m->m_matrix = m_matrix ;
1088     return m;
1089 }
1090
1091 // concatenates the matrix
1092 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
1093 {
1094     m_matrix = CGAffineTransformConcat(*((CGAffineTransform*) t->GetNativeMatrix()), m_matrix );
1095 }
1096
1097 // sets the matrix to the respective values
1098 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1099     wxDouble tx, wxDouble ty)
1100 {
1101     m_matrix = CGAffineTransformMake((CGFloat) a,(CGFloat) b,(CGFloat) c,(CGFloat) d,(CGFloat) tx,(CGFloat) ty);
1102 }
1103
1104 // gets the component valuess of the matrix
1105 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
1106                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
1107 {
1108     if (a)  *a = m_matrix.a;
1109     if (b)  *b = m_matrix.b;
1110     if (c)  *c = m_matrix.c;
1111     if (d)  *d = m_matrix.d;
1112     if (tx) *tx= m_matrix.tx;
1113     if (ty) *ty= m_matrix.ty;
1114 }
1115
1116 // makes this the inverse matrix
1117 void wxMacCoreGraphicsMatrixData::Invert()
1118 {
1119     m_matrix = CGAffineTransformInvert( m_matrix );
1120 }
1121
1122 // returns true if the elements of the transformation matrix are equal ?
1123 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1124 {
1125     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
1126 }
1127
1128 // return true if this is the identity matrix
1129 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
1130 {
1131     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
1132         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
1133 }
1134
1135 //
1136 // transformation
1137 //
1138
1139 // add the translation to this matrix
1140 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
1141 {
1142     m_matrix = CGAffineTransformTranslate( m_matrix, (CGFloat) dx, (CGFloat) dy);
1143 }
1144
1145 // add the scale to this matrix
1146 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1147 {
1148     m_matrix = CGAffineTransformScale( m_matrix, (CGFloat) xScale, (CGFloat) yScale);
1149 }
1150
1151 // add the rotation to this matrix (radians)
1152 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
1153 {
1154     m_matrix = CGAffineTransformRotate( m_matrix, (CGFloat) angle);
1155 }
1156
1157 //
1158 // apply the transforms
1159 //
1160
1161 // applies that matrix to the point
1162 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1163 {
1164     CGPoint pt = CGPointApplyAffineTransform( CGPointMake((CGFloat) *x,(CGFloat) *y), m_matrix);
1165
1166     *x = pt.x;
1167     *y = pt.y;
1168 }
1169
1170 // applies the matrix except for translations
1171 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1172 {
1173     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake((CGFloat) *dx,(CGFloat) *dy) , m_matrix );
1174     *dx = sz.width;
1175     *dy = sz.height;
1176 }
1177
1178 // returns the native representation
1179 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
1180 {
1181     return (void*) &m_matrix;
1182 }
1183
1184 //
1185 // Graphics Path
1186 //
1187
1188 //-----------------------------------------------------------------------------
1189 // wxMacCoreGraphicsPath declaration
1190 //-----------------------------------------------------------------------------
1191
1192 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
1193 {
1194 public :
1195     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
1196
1197     ~wxMacCoreGraphicsPathData();
1198
1199     virtual wxGraphicsObjectRefData *Clone() const;
1200
1201     // begins a new subpath at (x,y)
1202     virtual void MoveToPoint( wxDouble x, wxDouble y );
1203
1204     // adds a straight line from the current point to (x,y)
1205     virtual void AddLineToPoint( wxDouble x, wxDouble y );
1206
1207     // adds a cubic Bezier curve from the current point, using two control points and an end point
1208     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
1209
1210     // closes the current sub-path
1211     virtual void CloseSubpath();
1212
1213     // gets the last point of the current path, (0,0) if not yet set
1214     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
1215
1216     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1217     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
1218
1219     //
1220     // These are convenience functions which - if not available natively will be assembled
1221     // using the primitives from above
1222     //
1223
1224     // adds a quadratic Bezier curve from the current point, using a control point and an end point
1225     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
1226
1227     // appends a rectangle as a new closed subpath
1228     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1229
1230     // appends a circle as a new closed subpath
1231     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
1232
1233     // appends an ellipsis as a new closed subpath fitting the passed rectangle
1234     virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
1235
1236     // 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)
1237     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
1238
1239     // adds another path
1240     virtual void AddPath( const wxGraphicsPathData* path );
1241
1242     // returns the native path
1243     virtual void * GetNativePath() const { return m_path; }
1244
1245     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
1246     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
1247
1248     // transforms each point of this path by the matrix
1249     virtual void Transform( const wxGraphicsMatrixData* matrix );
1250
1251     // gets the bounding box enclosing all points (possibly including control points)
1252     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
1253
1254     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
1255 private :
1256     CGMutablePathRef m_path;
1257 };
1258
1259 //-----------------------------------------------------------------------------
1260 // wxMacCoreGraphicsPath implementation
1261 //-----------------------------------------------------------------------------
1262
1263 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1264 {
1265     if ( path )
1266         m_path = path;
1267     else
1268         m_path = CGPathCreateMutable();
1269 }
1270
1271 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1272 {
1273     CGPathRelease( m_path );
1274 }
1275
1276 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1277 {
1278     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1279     return clone ;
1280 }
1281
1282
1283 // opens (starts) a new subpath
1284 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1285 {
1286     CGPathMoveToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1287 }
1288
1289 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1290 {
1291     CGPathAddLineToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1292 }
1293
1294 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1295 {
1296     CGPathAddCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) cx2, (CGFloat) cy2, (CGFloat) x , (CGFloat) y );
1297 }
1298
1299 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1300 {
1301     CGPathAddQuadCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) x , (CGFloat) y );
1302 }
1303
1304 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1305 {
1306     CGRect cgRect = { { (CGFloat) x , (CGFloat) y } , { (CGFloat) w , (CGFloat) h } };
1307     CGPathAddRect( m_path , NULL , cgRect );
1308 }
1309
1310 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1311 {
1312     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x-r,y-r,2*r,2*r));
1313 }
1314
1315 void wxMacCoreGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1316 {
1317     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x,y,w,h));
1318 }
1319
1320 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1321 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1322 {
1323     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1324     CGPathAddArc( m_path, NULL , (CGFloat) x, (CGFloat) y, (CGFloat) r, (CGFloat) startAngle, (CGFloat) endAngle, !clockwise);
1325 }
1326
1327 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1328 {
1329     CGPathAddArcToPoint( m_path, NULL , (CGFloat) x1, (CGFloat) y1, (CGFloat) x2, (CGFloat) y2, (CGFloat) r);
1330 }
1331
1332 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1333 {
1334     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1335 }
1336
1337 // closes the current subpath
1338 void wxMacCoreGraphicsPathData::CloseSubpath()
1339 {
1340     CGPathCloseSubpath( m_path );
1341 }
1342
1343 // gets the last point of the current path, (0,0) if not yet set
1344 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1345 {
1346     CGPoint p = CGPathGetCurrentPoint( m_path );
1347     *x = p.x;
1348     *y = p.y;
1349 }
1350
1351 // transforms each point of this path by the matrix
1352 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1353 {
1354     CGMutablePathRef p = CGPathCreateMutable() ;
1355     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1356     CGPathRelease( m_path );
1357     m_path = p;
1358 }
1359
1360 // gets the bounding box enclosing all points (possibly including control points)
1361 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1362 {
1363     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1364     *x = bounds.origin.x;
1365     *y = bounds.origin.y;
1366     *w = bounds.size.width;
1367     *h = bounds.size.height;
1368 }
1369
1370 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle) const
1371 {
1372     return CGPathContainsPoint( m_path, NULL, CGPointMake((CGFloat) x,(CGFloat) y), fillStyle == wxODDEVEN_RULE );
1373 }
1374
1375 //
1376 // Graphics Context
1377 //
1378
1379 //-----------------------------------------------------------------------------
1380 // wxMacCoreGraphicsContext declaration
1381 //-----------------------------------------------------------------------------
1382
1383 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1384 {
1385 public:
1386     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1387
1388 #if wxOSX_USE_CARBON
1389     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1390 #endif
1391
1392     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1393
1394     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1395
1396     ~wxMacCoreGraphicsContext();
1397
1398     void Init();
1399
1400     virtual void StartPage( wxDouble width, wxDouble height );
1401
1402     virtual void EndPage();
1403
1404     virtual void Flush();
1405
1406     // push the current state of the context, ie the transformation matrix on a stack
1407     virtual void PushState();
1408
1409     // pops a stored state from the stack
1410     virtual void PopState();
1411
1412     // clips drawings to the region
1413     virtual void Clip( const wxRegion &region );
1414
1415     // clips drawings to the rect
1416     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1417
1418     // resets the clipping to original extent
1419     virtual void ResetClip();
1420
1421     virtual void * GetNativeContext();
1422
1423     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
1424
1425     virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
1426
1427     virtual bool SetCompositionMode(wxCompositionMode op);
1428
1429     virtual void BeginLayer(wxDouble opacity);
1430
1431     virtual void EndLayer();
1432
1433     //
1434     // transformation
1435     //
1436
1437     // translate
1438     virtual void Translate( wxDouble dx , wxDouble dy );
1439
1440     // scale
1441     virtual void Scale( wxDouble xScale , wxDouble yScale );
1442
1443     // rotate (radians)
1444     virtual void Rotate( wxDouble angle );
1445
1446     // concatenates this transform with the current transform of this context
1447     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1448
1449     // sets the transform of this context
1450     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1451
1452     // gets the matrix of this context
1453     virtual wxGraphicsMatrix GetTransform() const;
1454     //
1455     // setting the paint
1456     //
1457
1458     // strokes along a path with the current pen
1459     virtual void StrokePath( const wxGraphicsPath &path );
1460
1461     // fills a path with the current brush
1462     virtual void FillPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1463
1464     // draws a path by first filling and then stroking
1465     virtual void DrawPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1466
1467     virtual bool ShouldOffset() const
1468     {
1469         if ( !m_enableOffset )
1470             return false;
1471
1472         int penwidth = 0 ;
1473         if ( !m_pen.IsNull() )
1474         {
1475             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1476             if ( penwidth == 0 )
1477                 penwidth = 1;
1478         }
1479         return ( penwidth % 2 ) == 1;
1480     }
1481     //
1482     // text
1483     //
1484
1485     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1486         wxDouble *descent, wxDouble *externalLeading ) const;
1487
1488     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1489
1490     //
1491     // image support
1492     //
1493
1494     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1495
1496     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1497
1498     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1499
1500     // fast convenience methods
1501
1502
1503     virtual void DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1504
1505     void SetNativeContext( CGContextRef cg );
1506
1507     wxDECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext);
1508
1509 private:
1510     bool EnsureIsValid();
1511     void CheckInvariants() const;
1512
1513     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
1514     virtual void DoDrawRotatedText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1515
1516     CGContextRef m_cgContext;
1517 #if wxOSX_USE_CARBON
1518     WindowRef m_windowRef;
1519 #else
1520     WXWidget m_view;
1521 #endif
1522     bool m_contextSynthesized;
1523     CGAffineTransform m_windowTransform;
1524     bool m_invisible;
1525
1526 #if wxOSX_USE_COCOA_OR_CARBON
1527     wxCFRef<HIShapeRef> m_clipRgn;
1528 #endif
1529 };
1530
1531 //-----------------------------------------------------------------------------
1532 // device context implementation
1533 //
1534 // more and more of the dc functionality should be implemented by calling
1535 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1536 // also coordinate conversions should be moved to native matrix ops
1537 //-----------------------------------------------------------------------------
1538
1539 // we always stock two context states, one at entry, to be able to preserve the
1540 // state we were called with, the other one after changing to HI Graphics orientation
1541 // (this one is used for getting back clippings etc)
1542
1543 //-----------------------------------------------------------------------------
1544 // wxMacCoreGraphicsContext implementation
1545 //-----------------------------------------------------------------------------
1546
1547 class wxQuartzOffsetHelper
1548 {
1549 public :
1550     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1551     {
1552         m_cg = cg;
1553         m_offset = offset;
1554         if ( m_offset )
1555         {
1556             m_userOffset = CGContextConvertSizeToUserSpace( m_cg, CGSizeMake( 0.5 , 0.5 ) );
1557             CGContextTranslateCTM( m_cg, m_userOffset.width , m_userOffset.height );
1558         }
1559         else
1560         {
1561             m_userOffset = CGSizeMake(0.0, 0.0);
1562         }
1563
1564     }
1565     ~wxQuartzOffsetHelper( )
1566     {
1567         if ( m_offset )
1568             CGContextTranslateCTM( m_cg, -m_userOffset.width , -m_userOffset.height );
1569     }
1570 public :
1571     CGSize m_userOffset;
1572     CGContextRef m_cg;
1573     bool m_offset;
1574 } ;
1575
1576 void wxMacCoreGraphicsContext::Init()
1577 {
1578     m_cgContext = NULL;
1579     m_contextSynthesized = false;
1580     m_width = 0;
1581     m_height = 0;
1582 #if wxOSX_USE_CARBON
1583     m_windowRef = NULL;
1584 #endif
1585 #if wxOSX_USE_COCOA_OR_IPHONE
1586     m_view = NULL;
1587 #endif
1588     m_invisible = false;
1589     m_antialias = wxANTIALIAS_DEFAULT;
1590     m_interpolation = wxINTERPOLATION_DEFAULT;
1591 }
1592
1593 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1594 {
1595     Init();
1596     SetNativeContext(cgcontext);
1597     m_width = width;
1598     m_height = height;
1599 }
1600
1601 #if wxOSX_USE_CARBON
1602 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1603 {
1604     Init();
1605     m_windowRef = window;
1606     m_enableOffset = true;
1607 }
1608 #endif
1609
1610 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1611 {
1612     Init();
1613
1614     m_enableOffset = true;
1615     wxSize sz = window->GetSize();
1616     m_width = sz.x;
1617     m_height = sz.y;
1618
1619 #if wxOSX_USE_COCOA_OR_IPHONE
1620     m_view = window->GetHandle();
1621
1622 #if wxOSX_USE_COCOA
1623     if ( ! window->GetPeer()->IsFlipped() )
1624     {
1625         m_windowTransform = CGAffineTransformMakeTranslation( 0 , m_height );
1626         m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1627     }
1628     else
1629 #endif
1630     {
1631         m_windowTransform = CGAffineTransformIdentity;
1632     }
1633 #else
1634     int originX , originY;
1635     originX = originY = 0;
1636     Rect bounds = { 0,0,0,0 };
1637     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1638     window->MacWindowToRootWindow( &originX , &originY );
1639     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1640     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1641     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1642     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1643 #endif
1644 }
1645
1646 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1647 {
1648     Init();
1649 }
1650
1651 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1652 {
1653     SetNativeContext(NULL);
1654 }
1655
1656
1657 void wxMacCoreGraphicsContext::CheckInvariants() const
1658 {
1659     // check invariants here for debugging ...
1660 }
1661
1662
1663
1664 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1665 {
1666     CGRect r;
1667     if ( width != 0 && height != 0)
1668         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) width  , (CGFloat) height );
1669     else
1670         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) m_width  , (CGFloat) m_height );
1671
1672     CGContextBeginPage(m_cgContext,  &r );
1673 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1674 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1675 }
1676
1677 void wxMacCoreGraphicsContext::EndPage()
1678 {
1679     CGContextEndPage(m_cgContext);
1680 }
1681
1682 void wxMacCoreGraphicsContext::Flush()
1683 {
1684     CGContextFlush(m_cgContext);
1685 }
1686
1687 bool wxMacCoreGraphicsContext::EnsureIsValid()
1688 {
1689     CheckInvariants();
1690
1691     if ( !m_cgContext )
1692     {
1693         if (m_invisible)
1694             return false;
1695
1696 #if wxOSX_USE_COCOA
1697         if ( wxOSXLockFocus(m_view) )
1698         {
1699             m_cgContext = wxOSXGetContextFromCurrentContext();
1700             wxASSERT_MSG( m_cgContext != NULL, wxT("Unable to retrieve drawing context from View"));
1701         }
1702         else
1703         {
1704             m_invisible = true;
1705         }
1706 #endif
1707 #if wxOSX_USE_IPHONE
1708         m_cgContext = wxOSXGetContextFromCurrentContext();
1709         if ( m_cgContext == NULL )
1710         {
1711             m_invisible = true;
1712         }
1713 #endif
1714 #if wxOSX_USE_CARBON
1715         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1716         if ( status != noErr )
1717         {
1718             wxFAIL_MSG("Cannot nest wxDCs on the same window");
1719         }
1720 #endif
1721         if ( m_cgContext )
1722         {
1723             CGContextSaveGState( m_cgContext );
1724 #if wxOSX_USE_COCOA_OR_CARBON
1725             if ( m_clipRgn.get() )
1726             {
1727                 wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
1728                 // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1729                 if ( HIShapeIsEmpty(hishape))
1730                 {
1731                     CGRect empty = CGRectMake( 0,0,0,0 );
1732                     CGContextClipToRect( m_cgContext, empty );
1733                 }
1734                 else
1735                 {
1736                     HIShapeReplacePathInCGContext( hishape, m_cgContext );
1737                     CGContextClip( m_cgContext );
1738                 }
1739             }
1740 #endif
1741             CGContextConcatCTM( m_cgContext, m_windowTransform );
1742             CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
1743             m_contextSynthesized = true;
1744             CGContextSaveGState( m_cgContext );
1745
1746 #if 0 // turn on for debugging of clientdc
1747             static float color = 0.5 ;
1748             static int channel = 0 ;
1749             CGRect bounds = CGRectMake(-1000,-1000,2000,2000);
1750             CGContextSetRGBFillColor( m_cgContext, channel == 0 ? color : 0.5 ,
1751                 channel == 1 ? color : 0.5 , channel == 2 ? color : 0.5 , 1 );
1752             CGContextFillRect( m_cgContext, bounds );
1753             color += 0.1 ;
1754             if ( color > 0.9 )
1755             {
1756                 color = 0.5 ;
1757                 channel++ ;
1758                 if ( channel == 3 )
1759                     channel = 0 ;
1760             }
1761 #endif
1762         }
1763     }
1764     CheckInvariants();
1765
1766     return m_cgContext != NULL;
1767 }
1768
1769 bool wxMacCoreGraphicsContext::SetAntialiasMode(wxAntialiasMode antialias)
1770 {
1771     if (!EnsureIsValid())
1772         return true;
1773
1774     if (m_antialias == antialias)
1775         return true;
1776
1777     m_antialias = antialias;
1778
1779     bool antialiasMode;
1780     switch (antialias)
1781     {
1782         case wxANTIALIAS_DEFAULT:
1783             antialiasMode = true;
1784             break;
1785         case wxANTIALIAS_NONE:
1786             antialiasMode = false;
1787             break;
1788         default:
1789             return false;
1790     }
1791     CGContextSetShouldAntialias(m_cgContext, antialiasMode);
1792     CheckInvariants();
1793     return true;
1794 }
1795
1796 bool wxMacCoreGraphicsContext::SetInterpolationQuality(wxInterpolationQuality interpolation)
1797 {
1798     if (!EnsureIsValid())
1799         return true;
1800
1801     if (m_interpolation == interpolation)
1802         return true;
1803
1804     m_interpolation = interpolation;
1805     CGInterpolationQuality quality;
1806
1807     switch (interpolation)
1808     {
1809         case wxINTERPOLATION_DEFAULT:
1810             quality = kCGInterpolationDefault;
1811             break;
1812         case wxINTERPOLATION_NONE:
1813             quality = kCGInterpolationNone;
1814             break;
1815         case wxINTERPOLATION_FAST:
1816             quality = kCGInterpolationLow;
1817             break;
1818         case wxINTERPOLATION_GOOD:
1819 #if wxOSX_USE_COCOA_OR_CARBON
1820             quality = UMAGetSystemVersion() < 0x1060 ? kCGInterpolationHigh : (CGInterpolationQuality) 4 /*kCGInterpolationMedium only on 10.6*/;
1821 #else
1822             quality = kCGInterpolationMedium;
1823 #endif
1824             break;
1825         case wxINTERPOLATION_BEST:
1826             quality = kCGInterpolationHigh;
1827             break;
1828         default:
1829             return false;
1830     }
1831     CGContextSetInterpolationQuality(m_cgContext, quality);
1832     CheckInvariants();
1833     return true;
1834 }
1835
1836 bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
1837 {
1838     if (!EnsureIsValid())
1839         return true;
1840
1841     if ( m_composition == op )
1842         return true;
1843
1844     m_composition = op;
1845
1846     if (m_composition == wxCOMPOSITION_DEST)
1847         return true;
1848
1849 #if wxOSX_USE_COCOA_OR_CARBON
1850     if ( UMAGetSystemVersion() < 0x1060 )
1851     {
1852         CGCompositeOperation cop = kCGCompositeOperationSourceOver;
1853         CGBlendMode mode = kCGBlendModeNormal;
1854         switch( op )
1855         {
1856         case wxCOMPOSITION_CLEAR:
1857             cop = kCGCompositeOperationClear;
1858             break;
1859         case wxCOMPOSITION_SOURCE:
1860             cop = kCGCompositeOperationCopy;
1861             break;
1862         case wxCOMPOSITION_OVER:
1863             mode = kCGBlendModeNormal;
1864             break;
1865         case wxCOMPOSITION_IN:
1866             cop = kCGCompositeOperationSourceIn;
1867             break;
1868         case wxCOMPOSITION_OUT:
1869             cop = kCGCompositeOperationSourceOut;
1870             break;
1871         case wxCOMPOSITION_ATOP:
1872             cop = kCGCompositeOperationSourceAtop;
1873             break;
1874         case wxCOMPOSITION_DEST_OVER:
1875             cop = kCGCompositeOperationDestinationOver;
1876             break;
1877         case wxCOMPOSITION_DEST_IN:
1878             cop = kCGCompositeOperationDestinationIn;
1879             break;
1880         case wxCOMPOSITION_DEST_OUT:
1881             cop = kCGCompositeOperationDestinationOut;
1882             break;
1883         case wxCOMPOSITION_DEST_ATOP:
1884            cop = kCGCompositeOperationDestinationAtop;
1885             break;
1886         case wxCOMPOSITION_XOR:
1887             cop = kCGCompositeOperationXOR;
1888             break;
1889 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1890         case wxCOMPOSITION_ADD:
1891             mode = kCGBlendModePlusLighter ;
1892             break;
1893 #endif
1894         default:
1895             return false;
1896         }
1897         if ( cop != kCGCompositeOperationSourceOver )
1898             CGContextSetCompositeOperation(m_cgContext, cop);
1899         else
1900             CGContextSetBlendMode(m_cgContext, mode);
1901     }
1902 #endif
1903 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1904     else
1905     {
1906         CGBlendMode mode = kCGBlendModeNormal;
1907         switch( op )
1908         {
1909         case wxCOMPOSITION_CLEAR:
1910             mode = kCGBlendModeClear;
1911             break;
1912         case wxCOMPOSITION_SOURCE:
1913             mode = kCGBlendModeCopy;
1914             break;
1915         case wxCOMPOSITION_OVER:
1916             mode = kCGBlendModeNormal;
1917             break;
1918         case wxCOMPOSITION_IN:
1919             mode = kCGBlendModeSourceIn;
1920             break;
1921         case wxCOMPOSITION_OUT:
1922             mode = kCGBlendModeSourceOut;
1923             break;
1924         case wxCOMPOSITION_ATOP:
1925             mode = kCGBlendModeSourceAtop;
1926             break;
1927         case wxCOMPOSITION_DEST_OVER:
1928             mode = kCGBlendModeDestinationOver;
1929             break;
1930         case wxCOMPOSITION_DEST_IN:
1931             mode = kCGBlendModeDestinationIn;
1932             break;
1933         case wxCOMPOSITION_DEST_OUT:
1934             mode = kCGBlendModeDestinationOut;
1935             break;
1936         case wxCOMPOSITION_DEST_ATOP:
1937            mode = kCGBlendModeDestinationAtop;
1938             break;
1939         case wxCOMPOSITION_XOR:
1940             mode = kCGBlendModeXOR;
1941             break;
1942
1943         case wxCOMPOSITION_ADD:
1944             mode = kCGBlendModePlusLighter ;
1945             break;
1946         default:
1947             return false;
1948         }
1949         CGContextSetBlendMode(m_cgContext, mode);
1950     }
1951 #endif
1952     CheckInvariants();
1953     return true;
1954 }
1955
1956 void wxMacCoreGraphicsContext::BeginLayer(wxDouble opacity)
1957 {
1958     CheckInvariants();
1959     CGContextSaveGState(m_cgContext);
1960     CGContextSetAlpha(m_cgContext, (CGFloat) opacity);
1961     CGContextBeginTransparencyLayer(m_cgContext, 0);
1962     CheckInvariants();
1963 }
1964
1965 void wxMacCoreGraphicsContext::EndLayer()
1966 {
1967     CheckInvariants();
1968     CGContextEndTransparencyLayer(m_cgContext);
1969     CGContextRestoreGState(m_cgContext);
1970     CheckInvariants();
1971 }
1972
1973 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1974 {
1975     CheckInvariants();
1976 #if wxOSX_USE_COCOA_OR_CARBON
1977     if( m_cgContext )
1978     {
1979         wxCFRef<HIShapeRef> shape = wxCFRefFromGet(region.GetWXHRGN());
1980         // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1981         if ( HIShapeIsEmpty(shape))
1982         {
1983             CGRect empty = CGRectMake( 0,0,0,0 );
1984             CGContextClipToRect( m_cgContext, empty );
1985         }
1986         else
1987         {
1988             HIShapeReplacePathInCGContext( shape, m_cgContext );
1989             CGContextClip( m_cgContext );
1990         }
1991     }
1992     else
1993     {
1994         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1995         // to regions we try at least to have correct translations
1996         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
1997
1998         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1999         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
2000         m_clipRgn.reset(mutableShape);
2001     }
2002 #else
2003     // allow usage as measuring context
2004     // wxASSERT_MSG( m_cgContext != NULL, "Needs a valid context for clipping" );
2005 #endif
2006     CheckInvariants();
2007 }
2008
2009 // clips drawings to the rect
2010 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2011 {
2012     CheckInvariants();
2013     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2014     if ( m_cgContext )
2015     {
2016         CGContextClipToRect( m_cgContext, r );
2017     }
2018     else
2019     {
2020 #if wxOSX_USE_COCOA_OR_CARBON
2021         // the clipping itself must be stored as device coordinates, otherwise
2022         // we cannot apply it back correctly
2023         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
2024         r.size= CGSizeApplyAffineTransform(r.size, m_windowTransform);
2025         m_clipRgn.reset(HIShapeCreateWithRect(&r));
2026 #else
2027     // allow usage as measuring context
2028     // wxFAIL_MSG( "Needs a valid context for clipping" );
2029 #endif
2030     }
2031     CheckInvariants();
2032 }
2033
2034     // resets the clipping to original extent
2035 void wxMacCoreGraphicsContext::ResetClip()
2036 {
2037     if ( m_cgContext )
2038     {
2039         // there is no way for clearing the clip, we can only revert to the stored
2040         // state, but then we have to make sure everything else is NOT restored
2041         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2042         CGContextRestoreGState( m_cgContext );
2043         CGContextSaveGState( m_cgContext );
2044         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
2045         transformNew = CGAffineTransformInvert( transformNew ) ;
2046         CGContextConcatCTM( m_cgContext, transformNew);
2047         CGContextConcatCTM( m_cgContext, transform);
2048     }
2049     else
2050     {
2051 #if wxOSX_USE_COCOA_OR_CARBON
2052         m_clipRgn.reset();
2053 #else
2054     // allow usage as measuring context
2055     // wxFAIL_MSG( "Needs a valid context for clipping" );
2056 #endif
2057     }
2058     CheckInvariants();
2059 }
2060
2061 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
2062 {
2063     if ( m_pen.IsNull() )
2064         return ;
2065
2066     if (!EnsureIsValid())
2067         return;
2068
2069     if (m_composition == wxCOMPOSITION_DEST)
2070         return;
2071
2072     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2073
2074     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2075     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2076     CGContextStrokePath( m_cgContext );
2077
2078     CheckInvariants();
2079 }
2080
2081 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2082 {
2083     if (!EnsureIsValid())
2084         return;
2085
2086     if (m_composition == wxCOMPOSITION_DEST)
2087         return;
2088
2089     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2090     {
2091         // when using shading, we cannot draw pen and brush at the same time
2092         // revert to the base implementation of first filling and then stroking
2093         wxGraphicsContext::DrawPath( path, fillStyle );
2094         return;
2095     }
2096
2097     CGPathDrawingMode mode = kCGPathFill ;
2098     if ( m_brush.IsNull() )
2099     {
2100         if ( m_pen.IsNull() )
2101             return;
2102         else
2103             mode = kCGPathStroke;
2104     }
2105     else
2106     {
2107         if ( m_pen.IsNull() )
2108         {
2109             if ( fillStyle == wxODDEVEN_RULE )
2110                 mode = kCGPathEOFill;
2111             else
2112                 mode = kCGPathFill;
2113         }
2114         else
2115         {
2116             if ( fillStyle == wxODDEVEN_RULE )
2117                 mode = kCGPathEOFillStroke;
2118             else
2119                 mode = kCGPathFillStroke;
2120         }
2121     }
2122
2123     if ( !m_brush.IsNull() )
2124         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2125     if ( !m_pen.IsNull() )
2126         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2127
2128     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2129
2130     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2131     CGContextDrawPath( m_cgContext , mode );
2132
2133     CheckInvariants();
2134 }
2135
2136 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
2137 {
2138     if ( m_brush.IsNull() )
2139         return;
2140
2141     if (!EnsureIsValid())
2142         return;
2143
2144     if (m_composition == wxCOMPOSITION_DEST)
2145         return;
2146
2147     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2148     {
2149         CGContextSaveGState( m_cgContext );
2150         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2151         CGContextClip( m_cgContext );
2152         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2153         CGContextRestoreGState( m_cgContext);
2154     }
2155     else
2156     {
2157         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2158         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2159         if ( fillStyle == wxODDEVEN_RULE )
2160             CGContextEOFillPath( m_cgContext );
2161         else
2162             CGContextFillPath( m_cgContext );
2163     }
2164
2165     CheckInvariants();
2166 }
2167
2168 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
2169 {
2170     // we allow either setting or clearing but not replacing
2171     wxASSERT( m_cgContext == NULL || cg == NULL );
2172
2173     if ( m_cgContext )
2174     {
2175         CheckInvariants();
2176         CGContextRestoreGState( m_cgContext );
2177         CGContextRestoreGState( m_cgContext );
2178         if ( m_contextSynthesized )
2179         {
2180 #if wxOSX_USE_CARBON
2181             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
2182 #endif
2183 #if wxOSX_USE_COCOA
2184             wxOSXUnlockFocus(m_view);
2185 #endif
2186         }
2187         else
2188             CGContextRelease(m_cgContext);
2189     }
2190
2191     m_cgContext = cg;
2192
2193     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
2194     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
2195     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
2196     // for this one operation.
2197
2198     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
2199     // can be removed.
2200     if (m_cgContext)
2201     {
2202         CGContextRetain(m_cgContext);
2203         CGContextSaveGState( m_cgContext );
2204         CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
2205         CGContextSaveGState( m_cgContext );
2206         m_contextSynthesized = false;
2207     }
2208 }
2209
2210 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
2211 {
2212     if ( m_cgContext )
2213         CGContextTranslateCTM( m_cgContext, (CGFloat) dx, (CGFloat) dy );
2214     else
2215         m_windowTransform = CGAffineTransformTranslate(m_windowTransform, (CGFloat) dx, (CGFloat) dy);
2216 }
2217
2218 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
2219 {
2220     if ( m_cgContext )
2221         CGContextScaleCTM( m_cgContext , (CGFloat) xScale , (CGFloat) yScale );
2222     else
2223         m_windowTransform = CGAffineTransformScale(m_windowTransform, (CGFloat) xScale, (CGFloat) yScale);
2224 }
2225
2226 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
2227 {
2228     if ( m_cgContext )
2229         CGContextRotateCTM( m_cgContext , (CGFloat) angle );
2230     else
2231         m_windowTransform = CGAffineTransformRotate(m_windowTransform, (CGFloat) angle);
2232 }
2233
2234 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2235 {
2236     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
2237     DrawBitmap(bitmap, x, y, w, h);
2238 }
2239
2240 void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2241 {
2242     if (!EnsureIsValid())
2243         return;
2244
2245     if (m_composition == wxCOMPOSITION_DEST)
2246         return;
2247
2248 #ifdef __WXMAC__
2249     wxMacCoreGraphicsBitmapData* refdata = static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
2250     CGImageRef image = refdata->GetBitmap();
2251     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2252     if ( refdata->IsMonochrome() == 1 )
2253     {
2254         // is a mask, the '1' in the mask tell where to draw the current brush
2255         if (  !m_brush.IsNull() )
2256         {
2257             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2258             {
2259                 // TODO clip to mask
2260             /*
2261                 CGContextSaveGState( m_cgContext );
2262                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2263                 CGContextClip( m_cgContext );
2264                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2265                 CGContextRestoreGState( m_cgContext);
2266             */
2267             }
2268             else
2269             {
2270                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2271                 wxMacDrawCGImage( m_cgContext , &r , image );
2272             }
2273         }
2274     }
2275     else
2276     {
2277         wxMacDrawCGImage( m_cgContext , &r , image );
2278     }
2279 #endif
2280
2281     CheckInvariants();
2282 }
2283
2284 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2285 {
2286     if (!EnsureIsValid())
2287         return;
2288
2289     if (m_composition == wxCOMPOSITION_DEST)
2290         return;
2291
2292     CGRect r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) w , (CGFloat) h );
2293     CGContextSaveGState( m_cgContext );
2294     CGContextTranslateCTM( m_cgContext,(CGFloat) x ,(CGFloat) (y + h) );
2295     CGContextScaleCTM( m_cgContext, 1, -1 );
2296 #if wxOSX_USE_COCOA_OR_CARBON
2297     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
2298         NULL , kPlotIconRefNormalFlags , icon.GetHICON() );
2299 #endif
2300     CGContextRestoreGState( m_cgContext );
2301
2302     CheckInvariants();
2303 }
2304
2305 void wxMacCoreGraphicsContext::PushState()
2306 {
2307     if (!EnsureIsValid())
2308         return;
2309
2310     CGContextSaveGState( m_cgContext );
2311 }
2312
2313 void wxMacCoreGraphicsContext::PopState()
2314 {
2315     if (!EnsureIsValid())
2316         return;
2317
2318     CGContextRestoreGState( m_cgContext );
2319 }
2320
2321 void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDouble y )
2322 {
2323     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2324
2325     if (!EnsureIsValid())
2326         return;
2327
2328     if (m_composition == wxCOMPOSITION_DEST)
2329         return;
2330
2331 #if wxOSX_USE_CORE_TEXT
2332     if ( UMAGetSystemVersion() >= 0x1050 )
2333     {
2334         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2335         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2336         CTFontRef font = fref->OSXGetCTFont();
2337         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2338 #if 0
2339         // right now there's no way to get continuous underlines, only words, so we emulate it
2340         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
2341         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
2342          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
2343         CFTypeRef values[] = { font, col, underlined };
2344 #else
2345         CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName };
2346         CFTypeRef values[] = { font, col };
2347 #endif
2348         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2349                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2350         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2351         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2352
2353         y += CTFontGetAscent(font);
2354
2355         CGContextSaveGState(m_cgContext);
2356         CGAffineTransform textMatrix = CGContextGetTextMatrix(m_cgContext);
2357
2358         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2359         CGContextScaleCTM(m_cgContext, 1, -1);
2360         CGContextSetTextMatrix(m_cgContext, CGAffineTransformIdentity);
2361
2362         CTLineDraw( line, m_cgContext );
2363
2364         if ( fref->GetUnderlined() ) {
2365             //AKT: draw horizontal line 1 pixel thick and with 1 pixel gap under baseline
2366             CGFloat width = CTLineGetTypographicBounds(line, NULL, NULL, NULL);
2367
2368             CGPoint points[] = { {0.0, -2.0},  {width, -2.0} };
2369
2370             CGContextSetStrokeColorWithColor(m_cgContext, col);
2371             CGContextSetShouldAntialias(m_cgContext, false);
2372             CGContextSetLineWidth(m_cgContext, 1.0);
2373             CGContextStrokeLineSegments(m_cgContext, points, 2);
2374         }
2375
2376         CGContextRestoreGState(m_cgContext);
2377         CGContextSetTextMatrix(m_cgContext, textMatrix);
2378         CFRelease( col );
2379         CheckInvariants();
2380         return;
2381     }
2382 #endif
2383 #if wxOSX_USE_ATSU_TEXT
2384     {
2385         DrawText(str, x, y, 0.0);
2386         return;
2387     }
2388 #endif
2389 #if wxOSX_USE_IPHONE
2390     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2391
2392     CGContextSaveGState(m_cgContext);
2393
2394     CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2395     CGContextSetTextDrawingMode (m_cgContext, kCGTextFill);
2396     CGContextSetFillColorWithColor( m_cgContext, col );
2397
2398     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2399     DrawTextInContext( m_cgContext, CGPointMake( x, y ), fref->GetUIFont() , text.AsNSString() );
2400
2401     CGContextRestoreGState(m_cgContext);
2402     CFRelease( col );
2403 #endif
2404
2405     CheckInvariants();
2406 }
2407
2408 void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
2409                                                  wxDouble x, wxDouble y,
2410                                                  wxDouble angle)
2411 {
2412     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2413
2414     if (!EnsureIsValid())
2415         return;
2416
2417     if (m_composition == wxCOMPOSITION_DEST)
2418         return;
2419
2420 #if wxOSX_USE_CORE_TEXT
2421     if ( UMAGetSystemVersion() >= 0x1050 )
2422     {
2423         // default implementation takes care of rotation and calls non rotated DrawText afterwards
2424         wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2425         return;
2426     }
2427 #endif
2428 #if wxOSX_USE_ATSU_TEXT
2429     {
2430         OSStatus status = noErr;
2431         ATSUTextLayout atsuLayout;
2432         wxMacUniCharBuffer unibuf( str );
2433         UniCharCount chars = unibuf.GetChars();
2434
2435         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2436         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2437                                                    &chars , &style , &atsuLayout );
2438
2439         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
2440
2441         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2442         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2443
2444         int iAngle = int( angle * RAD2DEG );
2445         if ( abs(iAngle) > 0 )
2446         {
2447             Fixed atsuAngle = IntToFixed( iAngle );
2448             ATSUAttributeTag atsuTags[] =
2449             {
2450                 kATSULineRotationTag ,
2451             };
2452             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2453             {
2454                 sizeof( Fixed ) ,
2455             };
2456             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2457             {
2458                 &atsuAngle ,
2459             };
2460             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2461                                              atsuTags, atsuSizes, atsuValues );
2462         }
2463
2464         {
2465             ATSUAttributeTag atsuTags[] =
2466             {
2467                 kATSUCGContextTag ,
2468             };
2469             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2470             {
2471                 sizeof( CGContextRef ) ,
2472             };
2473             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2474             {
2475                 &m_cgContext ,
2476             };
2477             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2478                                              atsuTags, atsuSizes, atsuValues );
2479         }
2480
2481         ATSUTextMeasurement textBefore, textAfter;
2482         ATSUTextMeasurement ascent, descent;
2483
2484         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2485                                             &textBefore , &textAfter, &ascent , &descent );
2486
2487         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2488
2489         Rect rect;
2490         x += (int)(sin(angle) * FixedToFloat(ascent));
2491         y += (int)(cos(angle) * FixedToFloat(ascent));
2492
2493         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2494                                         IntToFixed(x) , IntToFixed(y) , &rect );
2495         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2496
2497         CGContextSaveGState(m_cgContext);
2498         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2499         CGContextScaleCTM(m_cgContext, 1, -1);
2500         status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2501                                 IntToFixed(0) , IntToFixed(0) );
2502
2503         wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
2504
2505         CGContextRestoreGState(m_cgContext);
2506
2507         ::ATSUDisposeTextLayout(atsuLayout);
2508         CheckInvariants();
2509
2510         return;
2511     }
2512 #endif
2513 #if wxOSX_USE_IPHONE
2514     // default implementation takes care of rotation and calls non rotated DrawText afterwards
2515     wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2516 #endif
2517
2518     CheckInvariants();
2519 }
2520
2521 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2522                             wxDouble *descent, wxDouble *externalLeading ) const
2523 {
2524     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::GetTextExtent - no valid font set") );
2525
2526     if ( width )
2527         *width = 0;
2528     if ( height )
2529         *height = 0;
2530     if ( descent )
2531         *descent = 0;
2532     if ( externalLeading )
2533         *externalLeading = 0;
2534
2535     if (str.empty())
2536         return;
2537
2538 #if wxOSX_USE_CORE_TEXT
2539     if ( UMAGetSystemVersion() >= 0x1050 )
2540     {
2541         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2542         CTFontRef font = fref->OSXGetCTFont();
2543
2544         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2545         CFStringRef keys[] = { kCTFontAttributeName  };
2546         CFTypeRef values[] = { font };
2547         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2548                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2549         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2550         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2551
2552         CGFloat a, d, l, w;
2553         w = CTLineGetTypographicBounds(line, &a, &d, &l);
2554
2555         if ( height )
2556             *height = a+d+l;
2557         if ( descent )
2558             *descent = d;
2559         if ( externalLeading )
2560             *externalLeading = l;
2561         if ( width )
2562             *width = w;
2563         return;
2564     }
2565 #endif
2566 #if wxOSX_USE_ATSU_TEXT
2567     {
2568         OSStatus status = noErr;
2569
2570         ATSUTextLayout atsuLayout;
2571         wxMacUniCharBuffer unibuf( str );
2572         UniCharCount chars = unibuf.GetChars();
2573
2574         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2575         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2576                                                    &chars , &style , &atsuLayout );
2577
2578         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2579
2580         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2581         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2582
2583         ATSUTextMeasurement textBefore, textAfter;
2584         ATSUTextMeasurement textAscent, textDescent;
2585
2586         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2587                                             &textBefore , &textAfter, &textAscent , &textDescent );
2588
2589         if ( height )
2590             *height = FixedToFloat(textAscent + textDescent);
2591         if ( descent )
2592             *descent = FixedToFloat(textDescent);
2593         if ( externalLeading )
2594             *externalLeading = 0;
2595         if ( width )
2596             *width = FixedToFloat(textAfter - textBefore);
2597
2598         ::ATSUDisposeTextLayout(atsuLayout);
2599
2600         return;
2601     }
2602 #endif
2603 #if wxOSX_USE_IPHONE
2604     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2605
2606     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2607     CGSize sz = MeasureTextInContext( fref->GetUIFont() , text.AsNSString() );
2608
2609     if ( height )
2610         *height = sz.height;
2611         /*
2612     if ( descent )
2613         *descent = FixedToFloat(textDescent);
2614     if ( externalLeading )
2615         *externalLeading = 0;
2616         */
2617     if ( width )
2618         *width = sz.width;
2619 #endif
2620
2621     CheckInvariants();
2622 }
2623
2624 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2625 {
2626     widths.Empty();
2627     widths.Add(0, text.length());
2628
2629     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2630
2631     if (text.empty())
2632         return;
2633
2634 #if wxOSX_USE_CORE_TEXT
2635     {
2636         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2637         CTFontRef font = fref->OSXGetCTFont();
2638
2639         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
2640         CFStringRef keys[] = { kCTFontAttributeName  };
2641         CFTypeRef values[] = { font };
2642         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2643                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2644         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, t, attributes) );
2645         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2646
2647         int chars = text.length();
2648         for ( int pos = 0; pos < (int)chars; pos ++ )
2649         {
2650             widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL );
2651         }
2652
2653         return;
2654     }
2655 #endif
2656 #if wxOSX_USE_ATSU_TEXT
2657     {
2658         OSStatus status = noErr;
2659         ATSUTextLayout atsuLayout;
2660         wxMacUniCharBuffer unibuf( text );
2661         UniCharCount chars = unibuf.GetChars();
2662
2663         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2664         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2665                                           &chars , &style , &atsuLayout );
2666
2667         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2668
2669         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2670         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2671
2672 // new implementation from JS, keep old one just in case
2673 #if 0
2674         for ( int pos = 0; pos < (int)chars; pos ++ )
2675         {
2676             unsigned long actualNumberOfBounds = 0;
2677             ATSTrapezoid glyphBounds;
2678
2679             // We get a single bound, since the text should only require one. If it requires more, there is an issue
2680             OSStatus result;
2681             result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
2682                                         kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
2683             if (result != noErr || actualNumberOfBounds != 1 )
2684                 return;
2685
2686             widths[pos] = FixedToFloat( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
2687             //unsigned char uch = s[i];
2688         }
2689 #else
2690         ATSLayoutRecord *layoutRecords = NULL;
2691         ItemCount glyphCount = 0;
2692
2693         // Get the glyph extents
2694         OSStatus err = ::ATSUDirectGetLayoutDataArrayPtrFromTextLayout(atsuLayout,
2695                                                                        0,
2696                                                                        kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2697                                                                        (void **)
2698                                                                        &layoutRecords,
2699                                                                        &glyphCount);
2700         wxASSERT(glyphCount == (text.length()+1));
2701
2702         if ( err == noErr && glyphCount == (text.length()+1))
2703         {
2704             for ( int pos = 1; pos < (int)glyphCount ; pos ++ )
2705             {
2706                 widths[pos-1] = FixedToFloat( layoutRecords[pos].realPos );
2707             }
2708         }
2709
2710         ::ATSUDirectReleaseLayoutDataArrayPtr(NULL,
2711                                               kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2712                                               (void **) &layoutRecords);
2713 #endif
2714         ::ATSUDisposeTextLayout(atsuLayout);
2715     }
2716 #endif
2717 #if wxOSX_USE_IPHONE
2718     // TODO core graphics text implementation here
2719 #endif
2720
2721     CheckInvariants();
2722 }
2723
2724 void * wxMacCoreGraphicsContext::GetNativeContext()
2725 {
2726     return m_cgContext;
2727 }
2728
2729
2730 void wxMacCoreGraphicsContext::DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2731 {
2732     if (m_composition == wxCOMPOSITION_DEST)
2733         return;
2734
2735     CGRect rect = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2736     if ( !m_brush.IsNull() )
2737     {
2738         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2739         CGContextFillRect(m_cgContext, rect);
2740     }
2741
2742     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
2743     if ( !m_pen.IsNull() )
2744     {
2745         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
2746         CGContextStrokeRect(m_cgContext, rect);
2747     }
2748 }
2749
2750 // concatenates this transform with the current transform of this context
2751 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
2752 {
2753     if ( m_cgContext )
2754         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2755     else
2756         m_windowTransform = CGAffineTransformConcat(*(CGAffineTransform*) matrix.GetNativeMatrix(), m_windowTransform);
2757 }
2758
2759 // sets the transform of this context
2760 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
2761 {
2762     CheckInvariants();
2763     if ( m_cgContext )
2764     {
2765         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2766         transform = CGAffineTransformInvert( transform ) ;
2767         CGContextConcatCTM( m_cgContext, transform);
2768         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2769     }
2770     else
2771     {
2772         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
2773     }
2774     CheckInvariants();
2775 }
2776
2777 // gets the matrix of this context
2778 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
2779 {
2780     wxGraphicsMatrix m = CreateMatrix();
2781     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
2782         CGContextGetCTM( m_cgContext ));
2783     return m;
2784 }
2785
2786
2787 #if wxUSE_IMAGE
2788
2789 // ----------------------------------------------------------------------------
2790 // wxMacCoreGraphicsImageContext
2791 // ----------------------------------------------------------------------------
2792
2793 // This is a GC that can be used to draw on wxImage. In this implementation we
2794 // simply draw on a wxBitmap using wxMemoryDC and then convert it to wxImage in
2795 // the end so it's not especially interesting and exists mainly for
2796 // compatibility with the other platforms.
2797 class wxMacCoreGraphicsImageContext : public wxMacCoreGraphicsContext
2798 {
2799 public:
2800     wxMacCoreGraphicsImageContext(wxGraphicsRenderer* renderer,
2801                                   wxImage& image) :
2802         wxMacCoreGraphicsContext(renderer),
2803         m_image(image),
2804         m_bitmap(image),
2805         m_memDC(m_bitmap)
2806     {
2807         SetNativeContext
2808         (
2809             (CGContextRef)(m_memDC.GetGraphicsContext()->GetNativeContext())
2810         );
2811         m_width = image.GetWidth();
2812         m_height = image.GetHeight();
2813     }
2814
2815     virtual ~wxMacCoreGraphicsImageContext()
2816     {
2817         m_memDC.SelectObject(wxNullBitmap);
2818         m_image = m_bitmap.ConvertToImage();
2819     }
2820
2821 private:
2822     wxImage& m_image;
2823     wxBitmap m_bitmap;
2824     wxMemoryDC m_memDC;
2825 };
2826
2827 #endif // wxUSE_IMAGE
2828
2829 //
2830 // Renderer
2831 //
2832
2833 //-----------------------------------------------------------------------------
2834 // wxMacCoreGraphicsRenderer declaration
2835 //-----------------------------------------------------------------------------
2836
2837 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2838 {
2839 public :
2840     wxMacCoreGraphicsRenderer() {}
2841
2842     virtual ~wxMacCoreGraphicsRenderer() {}
2843
2844     // Context
2845
2846     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2847     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2848 #if wxUSE_PRINTING_ARCHITECTURE
2849     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
2850 #endif
2851
2852     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2853
2854     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2855
2856     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2857
2858 #if wxUSE_IMAGE
2859     virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
2860 #endif // wxUSE_IMAGE
2861
2862     virtual wxGraphicsContext * CreateMeasuringContext();
2863
2864     // Path
2865
2866     virtual wxGraphicsPath CreatePath();
2867
2868     // Matrix
2869
2870     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2871         wxDouble tx=0.0, wxDouble ty=0.0);
2872
2873
2874     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2875
2876     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2877
2878     virtual wxGraphicsBrush
2879     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2880                               wxDouble x2, wxDouble y2,
2881                               const wxGraphicsGradientStops& stops);
2882
2883     virtual wxGraphicsBrush
2884     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2885                               wxDouble xc, wxDouble yc,
2886                               wxDouble radius,
2887                               const wxGraphicsGradientStops& stops);
2888
2889    // sets the font
2890     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2891     virtual wxGraphicsFont CreateFont(double sizeInPixels,
2892                                       const wxString& facename,
2893                                       int flags = wxFONTFLAG_DEFAULT,
2894                                       const wxColour& col = *wxBLACK);
2895
2896     // create a native bitmap representation
2897     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
2898
2899 #if wxUSE_IMAGE
2900     virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
2901     virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp);
2902 #endif // wxUSE_IMAGE
2903
2904     // create a graphics bitmap from a native bitmap
2905     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
2906
2907     // create a native bitmap representation
2908     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) ;
2909 private :
2910     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2911 } ;
2912
2913 //-----------------------------------------------------------------------------
2914 // wxMacCoreGraphicsRenderer implementation
2915 //-----------------------------------------------------------------------------
2916
2917 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2918
2919 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2920
2921 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2922 {
2923     return &gs_MacCoreGraphicsRenderer;
2924 }
2925
2926 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc )
2927 {
2928     const wxDCImpl* impl = dc.GetImpl();
2929     wxWindowDCImpl *win_impl = wxDynamicCast( impl, wxWindowDCImpl );
2930     if (win_impl)
2931     {
2932         int w, h;
2933         win_impl->GetSize( &w, &h );
2934         CGContextRef cgctx = 0;
2935
2936         wxASSERT_MSG(win_impl->GetWindow(), "Invalid wxWindow in wxMacCoreGraphicsRenderer::CreateContext");
2937         if (win_impl->GetWindow())
2938             cgctx =  (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef());
2939
2940         // having a cgctx being NULL is fine (will be created on demand)
2941         // this is the case for all wxWindowDCs except wxPaintDC
2942         wxMacCoreGraphicsContext *context =
2943             new wxMacCoreGraphicsContext( this, cgctx, (wxDouble) w, (wxDouble) h );
2944         context->EnableOffset(true);
2945         return context;
2946     }
2947     return NULL;
2948 }
2949
2950 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC& dc )
2951 {
2952 #ifdef __WXMAC__
2953     const wxDCImpl* impl = dc.GetImpl();
2954     wxMemoryDCImpl *mem_impl = wxDynamicCast( impl, wxMemoryDCImpl );
2955     if (mem_impl)
2956     {
2957         int w, h;
2958         mem_impl->GetSize( &w, &h );
2959         wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext( this,
2960             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2961         context->EnableOffset(true);
2962         return context;
2963     }
2964 #endif
2965     return NULL;
2966 }
2967
2968 #if wxUSE_PRINTING_ARCHITECTURE
2969 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxPrinterDC& dc )
2970 {
2971 #ifdef __WXMAC__
2972     const wxDCImpl* impl = dc.GetImpl();
2973     wxPrinterDCImpl *print_impl = wxDynamicCast( impl, wxPrinterDCImpl );
2974     if (print_impl)
2975     {
2976         int w, h;
2977         print_impl->GetSize( &w, &h );
2978         return new wxMacCoreGraphicsContext( this,
2979             (CGContextRef)(print_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2980     }
2981 #endif
2982     return NULL;
2983 }
2984 #endif
2985
2986 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2987 {
2988     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2989 }
2990
2991 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2992 {
2993 #if wxOSX_USE_CARBON
2994     wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext(this,(WindowRef)window);
2995     context->EnableOffset(true);
2996     return context;
2997 #else
2998     wxUnusedVar(window);
2999     return NULL;
3000 #endif
3001 }
3002
3003 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
3004 {
3005     return new wxMacCoreGraphicsContext(this, window );
3006 }
3007
3008 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
3009 {
3010     return new wxMacCoreGraphicsContext(this);
3011 }
3012
3013 #if wxUSE_IMAGE
3014
3015 wxGraphicsContext*
3016 wxMacCoreGraphicsRenderer::CreateContextFromImage(wxImage& image)
3017 {
3018     return new wxMacCoreGraphicsImageContext(this, image);
3019 }
3020
3021 #endif // wxUSE_IMAGE
3022
3023 // Path
3024
3025 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
3026 {
3027     wxGraphicsPath m;
3028     m.SetRefData( new wxMacCoreGraphicsPathData(this));
3029     return m;
3030 }
3031
3032
3033 // Matrix
3034
3035 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
3036     wxDouble tx, wxDouble ty)
3037 {
3038     wxGraphicsMatrix m;
3039     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
3040     data->Set( a,b,c,d,tx,ty ) ;
3041     m.SetRefData(data);
3042     return m;
3043 }
3044
3045 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
3046 {
3047     if ( !pen.IsOk() || pen.GetStyle() == wxTRANSPARENT )
3048         return wxNullGraphicsPen;
3049     else
3050     {
3051         wxGraphicsPen p;
3052         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
3053         return p;
3054     }
3055 }
3056
3057 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
3058 {
3059     if ( !brush.IsOk() || brush.GetStyle() == wxTRANSPARENT )
3060         return wxNullGraphicsBrush;
3061     else
3062     {
3063         wxGraphicsBrush p;
3064         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
3065         return p;
3066     }
3067 }
3068
3069 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
3070 {
3071     if ( bmp.IsOk() )
3072     {
3073         wxGraphicsBitmap p;
3074         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );
3075         return p;
3076     }
3077     else
3078         return wxNullGraphicsBitmap;
3079 }
3080
3081 #if wxUSE_IMAGE
3082
3083 wxGraphicsBitmap
3084 wxMacCoreGraphicsRenderer::CreateBitmapFromImage(const wxImage& image)
3085 {
3086     // We don't have any direct way to convert wxImage to CGImage so pass by
3087     // wxBitmap. This makes this function pretty useless in this implementation
3088     // but it allows to have the same API as with Cairo backend where we can
3089     // convert wxImage to a Cairo surface directly, bypassing wxBitmap.
3090     return CreateBitmap(wxBitmap(image));
3091 }
3092
3093 wxImage wxMacCoreGraphicsRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
3094 {
3095     wxMacCoreGraphicsBitmapData* const
3096         data = static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
3097
3098     return data ? data->ConvertToImage() : wxNullImage;
3099 }
3100
3101 #endif // wxUSE_IMAGE
3102
3103 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
3104 {
3105     if ( bitmap != NULL )
3106     {
3107         wxGraphicsBitmap p;
3108         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , (CGImageRef) bitmap, false ));
3109         return p;
3110     }
3111     else
3112         return wxNullGraphicsBitmap;
3113 }
3114
3115 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h  )
3116 {
3117     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
3118     CGImageRef img = refdata->GetBitmap();
3119     if ( img )
3120     {
3121         wxGraphicsBitmap p;
3122         CGImageRef subimg = CGImageCreateWithImageInRect(img,CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h ));
3123         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , subimg, refdata->IsMonochrome() ) );
3124         return p;
3125     }
3126     else
3127         return wxNullGraphicsBitmap;
3128 }
3129
3130 wxGraphicsBrush
3131 wxMacCoreGraphicsRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
3132                                                      wxDouble x2, wxDouble y2,
3133                                                      const wxGraphicsGradientStops& stops)
3134 {
3135     wxGraphicsBrush p;
3136     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
3137     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
3138     p.SetRefData(d);
3139     return p;
3140 }
3141
3142 wxGraphicsBrush
3143 wxMacCoreGraphicsRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
3144                                                      wxDouble xc, wxDouble yc,
3145                                                      wxDouble radius,
3146                                                      const wxGraphicsGradientStops& stops)
3147 {
3148     wxGraphicsBrush p;
3149     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
3150     d->CreateRadialGradientBrush(xo, yo, xc, yc, radius, stops);
3151     p.SetRefData(d);
3152     return p;
3153 }
3154
3155 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
3156 {
3157     if ( font.IsOk() )
3158     {
3159         wxGraphicsFont p;
3160         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
3161         return p;
3162     }
3163     else
3164         return wxNullGraphicsFont;
3165 }
3166
3167 wxGraphicsFont
3168 wxMacCoreGraphicsRenderer::CreateFont(double sizeInPixels,
3169                                       const wxString& facename,
3170                                       int flags,
3171                                       const wxColour& col)
3172 {
3173     // This implementation is not ideal as we don't support fractional font
3174     // sizes right now, but it's the simplest one.
3175     //
3176     // Notice that under Mac we always use 72 DPI so the font size in pixels is
3177     // the same as the font size in points and we can pass it directly to wxFont
3178     // ctor.
3179     wxFont font(wxRound(sizeInPixels),
3180                 wxFONTFAMILY_DEFAULT,
3181                 flags & wxFONTFLAG_ITALIC ? wxFONTSTYLE_ITALIC
3182                                           : wxFONTSTYLE_NORMAL,
3183                 flags & wxFONTFLAG_BOLD ? wxFONTWEIGHT_BOLD
3184                                         : wxFONTWEIGHT_NORMAL,
3185                 (flags & wxFONTFLAG_UNDERLINED) != 0,
3186                 facename);
3187
3188     wxGraphicsFont f;
3189     f.SetRefData(new wxMacCoreGraphicsFontData(this, font, col));
3190     return f;
3191 }
3192
3193 //
3194 // CoreGraphics Helper Methods
3195 //
3196
3197 // Data Providers and Consumers
3198
3199 size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
3200 {
3201     CFMutableDataRef data = (CFMutableDataRef) info;
3202     if ( data )
3203     {
3204         CFDataAppendBytes( data, (const UInt8*) bytes, count );
3205     }
3206     return count;
3207 }
3208
3209 void wxMacReleaseCFDataProviderCallback(void *info,
3210                                       const void *WXUNUSED(data),
3211                                       size_t WXUNUSED(count))
3212 {
3213     if ( info )
3214         CFRelease( (CFDataRef) info );
3215 }
3216
3217 void wxMacReleaseCFDataConsumerCallback( void *info )
3218 {
3219     if ( info )
3220         CFRelease( (CFDataRef) info );
3221 }
3222
3223 CGDataProviderRef wxMacCGDataProviderCreateWithCFData( CFDataRef data )
3224 {
3225     if ( data == NULL )
3226         return NULL;
3227
3228     return CGDataProviderCreateWithCFData( data );
3229 }
3230
3231 CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data )
3232 {
3233     if ( data == NULL )
3234         return NULL;
3235
3236     return CGDataConsumerCreateWithCFData( data );
3237 }
3238
3239 void
3240 wxMacReleaseMemoryBufferProviderCallback(void *info,
3241                                          const void * WXUNUSED_UNLESS_DEBUG(data),
3242                                          size_t WXUNUSED(size))
3243 {
3244     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
3245
3246     wxASSERT( data == membuf->GetData() ) ;
3247
3248     delete membuf ;
3249 }
3250
3251 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf )
3252 {
3253     wxMemoryBuffer* b = new wxMemoryBuffer( buf );
3254     if ( b->GetDataLen() == 0 )
3255         return NULL;
3256
3257     return CGDataProviderCreateWithData( b , (const void *) b->GetData() , b->GetDataLen() ,
3258                                                  wxMacReleaseMemoryBufferProviderCallback );
3259 }