src/osx/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/dccg.cpp
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/graphics.h"
  15 #include "wx/private/graphics.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/dcclient.h"
  19     #include "wx/dcmemory.h"
  20     #include "wx/dcprint.h"
  21     #include "wx/log.h"
  22     #include "wx/region.h"
  23     #include "wx/image.h"
  24     #include "wx/icon.h"
  25 #endif
  26
  27
  28 #ifdef __MSL__
  29     #if __MSL__ >= 0x6000
  30         #include "math.h"
  31         // in case our functions were defined outside std, we make it known all the same
  32         namespace std { }
  33         using namespace std;
  34     #endif
  35 #endif
  36
  37 #ifdef __WXMAC__
  38     #include "wx/osx/private.h"
  39     #include "wx/osx/dcprint.h"
  40     #include "wx/osx/dcclient.h"
  41     #include "wx/osx/dcmemory.h"
  42     #include "wx/osx/private.h"
  43 #else
  44     #include "CoreServices/CoreServices.h"
  45     #include "ApplicationServices/ApplicationServices.h"
  46     #include "wx/osx/core/cfstring.h"
  47     #include "wx/cocoa/dcclient.h"
  48 #endif
  49
  50 #ifdef __WXCOCOA__
  51
  52 CGColorSpaceRef wxMacGetGenericRGBColorSpace()
  53 {
  54     static wxCFRef<CGColorSpaceRef> genericRGBColorSpace;
  55
  56     if (genericRGBColorSpace == NULL)
  57     {
  58         genericRGBColorSpace.reset( CGColorSpaceCreateWithName( kCGColorSpaceGenericRGB ) );
  59     }
  60
  61     return genericRGBColorSpace;
  62 }
  63
  64 int UMAGetSystemVersion()
  65 {
  66     return 0x1050;
  67 }
  68
  69
  70 #define wxOSX_USE_CORE_TEXT 1
  71
  72 #endif
  73
  74 #if wxOSX_USE_COCOA_OR_IPHONE
  75 extern CGContextRef wxOSXGetContextFromCurrentContext() ;
  76 #if wxOSX_USE_COCOA
  77 extern bool wxOSXLockFocus( WXWidget view) ;
  78 extern void wxOSXUnlockFocus( WXWidget view) ;
  79 #endif
  80 #endif
  81
  82 #if 1 // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
  83
  84 // TODO test whether this private API also works under 10.3
  85
  86 // copying values from NSCompositingModes (see also webkit and cairo sources)
  87
  88 typedef enum CGCompositeOperation {
  89    kCGCompositeOperationClear           = 0,
  90    kCGCompositeOperationCopy            = 1,
  91    kCGCompositeOperationSourceOver      = 2,
  92    kCGCompositeOperationSourceIn        = 3,
  93    kCGCompositeOperationSourceOut       = 4,
  94    kCGCompositeOperationSourceAtop      = 5,
  95    kCGCompositeOperationDestinationOver = 6,
  96    kCGCompositeOperationDestinationIn   = 7,
  97    kCGCompositeOperationDestinationOut  = 8,
  98    kCGCompositeOperationDestinationAtop = 9,
  99    kCGCompositeOperationXOR             = 10,
 100    kCGCompositeOperationPlusDarker      = 11,
 101 // NS only, unsupported by CG : Highlight
 102    kCGCompositeOperationPlusLighter     = 12
 103 } CGCompositeOperation ;
 104
 105 extern "C"
 106 {
 107    CG_EXTERN void CGContextSetCompositeOperation (CGContextRef context, int operation);
 108 } ;
 109
 110 #endif
 111
 112 //-----------------------------------------------------------------------------
 113 // constants
 114 //-----------------------------------------------------------------------------
 115
 116 #if !defined( __DARWIN__ ) || defined(__MWERKS__)
 117 #ifndef M_PI
 118 const double M_PI = 3.14159265358979;
 119 #endif
 120 #endif
 121
 122 static const double RAD2DEG = 180.0 / M_PI;
 123
 124 //
 125 // Pen, Brushes and Fonts
 126 //
 127
 128 #pragma mark -
 129 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
 130
 131 OSStatus wxMacDrawCGImage(
 132                   CGContextRef    inContext,
 133                   const CGRect *  inBounds,
 134                   CGImageRef      inImage)
 135 {
 136 #if wxOSX_USE_CARBON
 137     return HIViewDrawCGImage( inContext, inBounds, inImage );
 138 #else
 139     CGContextSaveGState(inContext);
 140     CGContextTranslateCTM(inContext, inBounds->origin.x, inBounds->origin.y + inBounds->size.height);
 141     CGRect r = *inBounds;
 142     r.origin.x = r.origin.y = 0;
 143     CGContextScaleCTM(inContext, 1, -1);
 144     CGContextDrawImage(inContext, r, inImage );
 145     CGContextRestoreGState(inContext);
 146     return noErr;
 147 #endif
 148 }
 149
 150 CGColorRef wxMacCreateCGColor( const wxColour& col )
 151 {
 152     CGColorRef retval = 0;
 153 #ifdef __WXMAC__
 154     retval = col.CreateCGColor();
 155 #else
 156 // TODO add conversion NSColor - CGColorRef (obj-c)
 157 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 158     if ( CGColorCreateGenericRGB )
 159         retval = CGColorCreateGenericRGB( col.Red() / 255.0 , col.Green() / 255.0, col.Blue() / 255.0, col.Alpha() / 255.0 );
 160     else
 161 #endif
 162     {
 163         CGFloat components[4] = { col.Red() / 255.0, col.Green() / 255.0, col.Blue()  / 255.0, col.Alpha() / 255.0 } ;
 164         retval = CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ;
 165     }
 166
 167 #endif
 168     return retval;
 169 }
 170
 171 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 && wxOSX_USE_CORE_TEXT
 172
 173 CTFontRef wxMacCreateCTFont( const wxFont& font )
 174 {
 175 #ifdef __WXMAC__
 176     return wxCFRetain((CTFontRef) font.OSXGetCTFont());
 177 #else
 178     return CTFontCreateWithName( wxCFStringRef( font.GetFaceName(), wxLocale::GetSystemEncoding() ) , font.GetPointSize() , NULL );
 179 #endif
 180 }
 181
 182 #endif
 183
 184 // CGPattern wrapper class: always allocate on heap, never call destructor
 185
 186 class wxMacCoreGraphicsPattern
 187 {
 188 public :
 189     wxMacCoreGraphicsPattern() {}
 190
 191     // is guaranteed to be called only with a non-Null CGContextRef
 192     virtual void Render( CGContextRef ctxRef ) = 0;
 193
 194     operator CGPatternRef() const { return m_patternRef; }
 195
 196 protected :
 197     virtual ~wxMacCoreGraphicsPattern()
 198     {
 199         // as this is called only when the m_patternRef is been released;
 200         // don't release it again
 201     }
 202
 203     static void _Render( void *info, CGContextRef ctxRef )
 204     {
 205         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 206         if ( self && ctxRef )
 207             self->Render( ctxRef );
 208     }
 209
 210     static void _Dispose( void *info )
 211     {
 212         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 213         delete self;
 214     }
 215
 216     CGPatternRef m_patternRef;
 217
 218     static const CGPatternCallbacks ms_Callbacks;
 219 };
 220
 221 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
 222
 223 class ImagePattern : public wxMacCoreGraphicsPattern
 224 {
 225 public :
 226     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 227     {
 228         wxASSERT( bmp && bmp->Ok() );
 229 #ifdef __WXMAC__
 230         Init( (CGImageRef) bmp->CreateCGImage() , transform );
 231 #endif
 232     }
 233
 234     // ImagePattern takes ownership of CGImageRef passed in
 235     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 236     {
 237         if ( image )
 238             CFRetain( image );
 239
 240         Init( image , transform );
 241     }
 242
 243     virtual void Render( CGContextRef ctxRef )
 244     {
 245         if (m_image != NULL)
 246             wxMacDrawCGImage( ctxRef, &m_imageBounds, m_image );
 247     }
 248
 249 protected :
 250     void Init( CGImageRef image, const CGAffineTransform& transform )
 251     {
 252         m_image = image;
 253         if ( m_image )
 254         {
 255             m_imageBounds = CGRectMake( (CGFloat) 0.0, (CGFloat) 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 256             m_patternRef = CGPatternCreate(
 257                 this , m_imageBounds, transform ,
 258                 m_imageBounds.size.width, m_imageBounds.size.height,
 259                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 260         }
 261     }
 262
 263     virtual ~ImagePattern()
 264     {
 265         if ( m_image )
 266             CGImageRelease( m_image );
 267     }
 268
 269     CGImageRef m_image;
 270     CGRect m_imageBounds;
 271 };
 272
 273 class HatchPattern : public wxMacCoreGraphicsPattern
 274 {
 275 public :
 276     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 277     {
 278         m_hatch = hatchstyle;
 279         m_imageBounds = CGRectMake( (CGFloat) 0.0, (CGFloat) 0.0, (CGFloat) 8.0 , (CGFloat) 8.0 );
 280         m_patternRef = CGPatternCreate(
 281             this , m_imageBounds, transform ,
 282             m_imageBounds.size.width, m_imageBounds.size.height,
 283             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 284     }
 285
 286     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 287     {
 288         CGContextStrokeLineSegments( ctxRef , pts , count );
 289     }
 290
 291     virtual void Render( CGContextRef ctxRef )
 292     {
 293         switch ( m_hatch )
 294         {
 295             case wxBDIAGONAL_HATCH :
 296                 {
 297                     CGPoint pts[] =
 298                     {
 299                     { (CGFloat) 8.0 , (CGFloat) 0.0 } , { (CGFloat) 0.0 , (CGFloat) 8.0 }
 300                     };
 301                     StrokeLineSegments( ctxRef , pts , 2 );
 302                 }
 303                 break;
 304
 305             case wxCROSSDIAG_HATCH :
 306                 {
 307                     CGPoint pts[] =
 308                     {
 309                         { (CGFloat) 0.0 , (CGFloat) 0.0 } , { (CGFloat) 8.0 , (CGFloat) 8.0 } ,
 310                         { (CGFloat) 8.0 , (CGFloat) 0.0 } , { (CGFloat) 0.0 , (CGFloat) 8.0 }
 311                     };
 312                     StrokeLineSegments( ctxRef , pts , 4 );
 313                 }
 314                 break;
 315
 316             case wxFDIAGONAL_HATCH :
 317                 {
 318                     CGPoint pts[] =
 319                     {
 320                     { (CGFloat) 0.0 , (CGFloat) 0.0 } , { (CGFloat) 8.0 , (CGFloat) 8.0 }
 321                     };
 322                     StrokeLineSegments( ctxRef , pts , 2 );
 323                 }
 324                 break;
 325
 326             case wxCROSS_HATCH :
 327                 {
 328                     CGPoint pts[] =
 329                     {
 330                     { (CGFloat) 0.0 , (CGFloat) 4.0 } , { (CGFloat) 8.0 , (CGFloat) 4.0 } ,
 331                     { (CGFloat) 4.0 , (CGFloat) 0.0 } , { (CGFloat) 4.0 , (CGFloat) 8.0 } ,
 332                     };
 333                     StrokeLineSegments( ctxRef , pts , 4 );
 334                 }
 335                 break;
 336
 337             case wxHORIZONTAL_HATCH :
 338                 {
 339                     CGPoint pts[] =
 340                     {
 341                     { (CGFloat) 0.0 , (CGFloat) 4.0 } , { (CGFloat) 8.0 , (CGFloat) 4.0 } ,
 342                     };
 343                     StrokeLineSegments( ctxRef , pts , 2 );
 344                 }
 345                 break;
 346
 347             case wxVERTICAL_HATCH :
 348                 {
 349                     CGPoint pts[] =
 350                     {
 351                     { (CGFloat) 4.0 , (CGFloat) 0.0 } , { (CGFloat) 4.0 , (CGFloat) 8.0 } ,
 352                     };
 353                     StrokeLineSegments( ctxRef , pts , 2 );
 354                 }
 355                 break;
 356
 357             default:
 358                 break;
 359         }
 360     }
 361
 362 protected :
 363     virtual ~HatchPattern() {}
 364
 365     CGRect      m_imageBounds;
 366     int         m_hatch;
 367 };
 368
 369 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 370 {
 371 public:
 372     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 373     ~wxMacCoreGraphicsPenData();
 374
 375     void Init();
 376     virtual void Apply( wxGraphicsContext* context );
 377     virtual wxDouble GetWidth() { return m_width; }
 378
 379 protected :
 380     CGLineCap m_cap;
 381     wxCFRef<CGColorRef> m_color;
 382     wxCFRef<CGColorSpaceRef> m_colorSpace;
 383
 384     CGLineJoin m_join;
 385     CGFloat m_width;
 386
 387     int m_count;
 388     const CGFloat *m_lengths;
 389     CGFloat *m_userLengths;
 390
 391
 392     bool m_isPattern;
 393     wxCFRef<CGPatternRef> m_pattern;
 394     CGFloat* m_patternColorComponents;
 395 };
 396
 397 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 398     wxGraphicsObjectRefData( renderer )
 399 {
 400     Init();
 401
 402     m_color.reset( wxMacCreateCGColor( pen.GetColour() ) ) ;
 403
 404     // TODO: * m_dc->m_scaleX
 405     m_width = pen.GetWidth();
 406     if (m_width <= 0.0)
 407         m_width = (CGFloat) 0.1;
 408
 409     switch ( pen.GetCap() )
 410     {
 411         case wxCAP_ROUND :
 412             m_cap = kCGLineCapRound;
 413             break;
 414
 415         case wxCAP_PROJECTING :
 416             m_cap = kCGLineCapSquare;
 417             break;
 418
 419         case wxCAP_BUTT :
 420             m_cap = kCGLineCapButt;
 421             break;
 422
 423         default :
 424             m_cap = kCGLineCapButt;
 425             break;
 426     }
 427
 428     switch ( pen.GetJoin() )
 429     {
 430         case wxJOIN_BEVEL :
 431             m_join = kCGLineJoinBevel;
 432             break;
 433
 434         case wxJOIN_MITER :
 435             m_join = kCGLineJoinMiter;
 436             break;
 437
 438         case wxJOIN_ROUND :
 439             m_join = kCGLineJoinRound;
 440             break;
 441
 442         default :
 443             m_join = kCGLineJoinMiter;
 444             break;
 445     }
 446
 447     const CGFloat dashUnit = m_width < 1.0 ? (CGFloat) 1.0 : m_width;
 448
 449     const CGFloat dotted[] = { (CGFloat) dashUnit , (CGFloat) (dashUnit + 2.0) };
 450     static const CGFloat short_dashed[] = { (CGFloat) 9.0 , (CGFloat) 6.0 };
 451     static const CGFloat dashed[] = { (CGFloat) 19.0 , (CGFloat) 9.0 };
 452     static const CGFloat dotted_dashed[] = { (CGFloat) 9.0 , (CGFloat) 6.0 , (CGFloat) 3.0 , (CGFloat) 3.0 };
 453
 454     switch ( pen.GetStyle() )
 455     {
 456         case wxPENSTYLE_SOLID:
 457             break;
 458
 459         case wxPENSTYLE_DOT:
 460             m_count = WXSIZEOF(dotted);
 461             m_userLengths = new CGFloat[ m_count ] ;
 462             memcpy( m_userLengths, dotted, sizeof(dotted) );
 463             m_lengths = m_userLengths;
 464             break;
 465
 466         case wxPENSTYLE_LONG_DASH:
 467             m_count = WXSIZEOF(dashed);
 468             m_lengths = dashed;
 469             break;
 470
 471         case wxPENSTYLE_SHORT_DASH:
 472             m_count = WXSIZEOF(short_dashed);
 473             m_lengths = short_dashed;
 474             break;
 475
 476         case wxPENSTYLE_DOT_DASH:
 477             m_count = WXSIZEOF(dotted_dashed);
 478             m_lengths = dotted_dashed;
 479             break;
 480
 481         case wxPENSTYLE_USER_DASH:
 482             wxDash *dashes;
 483             m_count = pen.GetDashes( &dashes );
 484             if ((dashes != NULL) && (m_count > 0))
 485             {
 486                 m_userLengths = new CGFloat[m_count];
 487                 for ( int i = 0; i < m_count; ++i )
 488                 {
 489                     m_userLengths[i] = dashes[i] * dashUnit;
 490
 491                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 492                         m_userLengths[i] = (CGFloat) (dashUnit + 2.0);
 493                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 494                         m_userLengths[i] = dashUnit;
 495                 }
 496             }
 497             m_lengths = m_userLengths;
 498             break;
 499
 500         case wxPENSTYLE_STIPPLE:
 501             {
 502                 wxBitmap* bmp = pen.GetStipple();
 503                 if ( bmp && bmp->Ok() )
 504                 {
 505                     m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 506                     m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 507                     m_patternColorComponents = new CGFloat[1] ;
 508                     m_patternColorComponents[0] = (CGFloat) 1.0;
 509                     m_isPattern = true;
 510                 }
 511             }
 512             break;
 513
 514         default :
 515             {
 516                 m_isPattern = true;
 517                 m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 518                 m_pattern.reset( (CGPatternRef) *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 519                 m_patternColorComponents = new CGFloat[4] ;
 520                 m_patternColorComponents[0] = (CGFloat) (pen.GetColour().Red() / 255.0);
 521                 m_patternColorComponents[1] = (CGFloat) (pen.GetColour().Green() / 255.0);
 522                 m_patternColorComponents[2] = (CGFloat) (pen.GetColour().Blue() / 255.0);
 523                 m_patternColorComponents[3] =  (CGFloat) (pen.GetColour().Alpha() / 255.0);
 524             }
 525             break;
 526     }
 527     if ((m_lengths != NULL) && (m_count > 0))
 528     {
 529         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 530         m_cap = kCGLineCapButt;
 531     }
 532 }
 533
 534 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 535 {
 536     delete[] m_userLengths;
 537     delete[] m_patternColorComponents;
 538 }
 539
 540 void wxMacCoreGraphicsPenData::Init()
 541 {
 542     m_lengths = NULL;
 543     m_userLengths = NULL;
 544     m_width = 0;
 545     m_count = 0;
 546     m_patternColorComponents = NULL;
 547     m_isPattern = false;
 548 }
 549
 550 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 551 {
 552     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 553     CGContextSetLineWidth( cg , m_width );
 554     CGContextSetLineJoin( cg , m_join );
 555
 556     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 557     CGContextSetLineCap( cg , m_cap );
 558
 559     if ( m_isPattern )
 560     {
 561         CGAffineTransform matrix = CGContextGetCTM( cg );
 562         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 563         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 564         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 565     }
 566     else
 567     {
 568         CGContextSetStrokeColorWithColor( cg , m_color );
 569     }
 570 }
 571
 572 //
 573 // Brush
 574 //
 575
 576 // make sure we all use one class for all conversions from wx to native colour
 577
 578 class wxMacCoreGraphicsColour
 579 {
 580     public:
 581         wxMacCoreGraphicsColour();
 582         wxMacCoreGraphicsColour(const wxBrush &brush);
 583         ~wxMacCoreGraphicsColour();
 584
 585         void Apply( CGContextRef cgContext );
 586     protected:
 587         void Init();
 588         wxCFRef<CGColorRef> m_color;
 589         wxCFRef<CGColorSpaceRef> m_colorSpace;
 590
 591         bool m_isPattern;
 592         wxCFRef<CGPatternRef> m_pattern;
 593         CGFloat* m_patternColorComponents;
 594 } ;
 595
 596 wxMacCoreGraphicsColour::~wxMacCoreGraphicsColour()
 597 {
 598     delete[] m_patternColorComponents;
 599 }
 600
 601 void wxMacCoreGraphicsColour::Init()
 602 {
 603     m_isPattern = false;
 604     m_patternColorComponents = NULL;
 605 }
 606
 607 void wxMacCoreGraphicsColour::Apply( CGContextRef cgContext )
 608 {
 609     if ( m_isPattern )
 610     {
 611         CGAffineTransform matrix = CGContextGetCTM( cgContext );
 612         CGContextSetPatternPhase( cgContext, CGSizeMake(matrix.tx, matrix.ty) );
 613         CGContextSetFillColorSpace( cgContext , m_colorSpace );
 614         CGContextSetFillPattern( cgContext, m_pattern , m_patternColorComponents );
 615     }
 616     else
 617     {
 618         CGContextSetFillColorWithColor( cgContext, m_color );
 619     }
 620 }
 621
 622 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour()
 623 {
 624     Init();
 625 }
 626
 627 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
 628 {
 629     Init();
 630     if ( brush.GetStyle() == wxSOLID )
 631     {
 632         m_color.reset( wxMacCreateCGColor( brush.GetColour() ));
 633     }
 634     else if ( brush.IsHatch() )
 635     {
 636         m_isPattern = true;
 637         m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 638         m_pattern.reset( (CGPatternRef) *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 639
 640         m_patternColorComponents = new CGFloat[4] ;
 641         m_patternColorComponents[0] = (CGFloat) (brush.GetColour().Red() / 255.0);
 642         m_patternColorComponents[1] = (CGFloat) (brush.GetColour().Green() / 255.0);
 643         m_patternColorComponents[2] = (CGFloat) (brush.GetColour().Blue() / 255.0);
 644         m_patternColorComponents[3] = (CGFloat) (brush.GetColour().Alpha() / 255.0);
 645     }
 646     else
 647     {
 648         // now brush is a bitmap
 649         wxBitmap* bmp = brush.GetStipple();
 650         if ( bmp && bmp->Ok() )
 651         {
 652             m_isPattern = true;
 653             m_patternColorComponents = new CGFloat[1] ;
 654             m_patternColorComponents[0] = (CGFloat) 1.0;
 655             m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 656             m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 657         }
 658     }
 659 }
 660
 661 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 662 {
 663 public:
 664     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 665     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 666     ~wxMacCoreGraphicsBrushData ();
 667
 668     virtual void Apply( wxGraphicsContext* context );
 669     void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 670                                    wxDouble x2, wxDouble y2,
 671                                    const wxGraphicsGradientStops& stops);
 672     void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 673                                    wxDouble xc, wxDouble yc, wxDouble radius,
 674                                    const wxGraphicsGradientStops& stops);
 675
 676     virtual bool IsShading() { return m_isShading; }
 677     CGShadingRef GetShading() { return m_shading; }
 678 protected:
 679     CGFunctionRef CreateGradientFunction(const wxGraphicsGradientStops& stops);
 680
 681     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 682     virtual void Init();
 683
 684     wxMacCoreGraphicsColour m_cgColor;
 685
 686     bool m_isShading;
 687     CGFunctionRef m_gradientFunction;
 688     CGShadingRef m_shading;
 689     CGFloat *m_gradientComponents;
 690 };
 691
 692 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 693 {
 694     Init();
 695 }
 696
 697 void
 698 wxMacCoreGraphicsBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
 699                                                       wxDouble x2, wxDouble y2,
 700                                                       const wxGraphicsGradientStops& stops)
 701 {
 702     m_gradientFunction = CreateGradientFunction(stops);
 703     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) x1, (CGFloat) y1),
 704                                         CGPointMake((CGFloat) x2,(CGFloat) y2), m_gradientFunction, true, true ) ;
 705     m_isShading = true ;
 706 }
 707
 708 void
 709 wxMacCoreGraphicsBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
 710                                                       wxDouble xc, wxDouble yc,
 711                                                       wxDouble radius,
 712                                                       const wxGraphicsGradientStops& stops)
 713 {
 714     m_gradientFunction = CreateGradientFunction(stops);
 715     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) xo,(CGFloat) yo), 0,
 716                                         CGPointMake((CGFloat) xc,(CGFloat) yc), (CGFloat) radius, m_gradientFunction, true, true ) ;
 717     m_isShading = true ;
 718 }
 719
 720 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer ),
 721     m_cgColor( brush )
 722 {
 723     Init();
 724
 725 }
 726
 727 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 728 {
 729     if ( m_shading )
 730         CGShadingRelease(m_shading);
 731
 732     if( m_gradientFunction )
 733         CGFunctionRelease(m_gradientFunction);
 734
 735     delete[] m_gradientComponents;
 736 }
 737
 738 void wxMacCoreGraphicsBrushData::Init()
 739 {
 740     m_gradientFunction = NULL;
 741     m_shading = NULL;
 742     m_gradientComponents = NULL;
 743     m_isShading = false;
 744 }
 745
 746 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 747 {
 748     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 749
 750     if ( m_isShading )
 751     {
 752         // nothing to set as shades are processed by clipping using the path and filling
 753     }
 754     else
 755     {
 756         m_cgColor.Apply( cg );
 757     }
 758 }
 759
 760 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 761 {
 762     CGFloat* colors = (CGFloat*) info ;
 763     CGFloat f = *in;
 764     for( int i = 0 ; i < 4 ; ++i )
 765     {
 766         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 767     }
 768 }
 769
 770 CGFunctionRef
 771 wxMacCoreGraphicsBrushData::CreateGradientFunction(const wxGraphicsGradientStops& stops)
 772 {
 773     // TODO: implement support for intermediate gradient stops
 774     const wxColour c1 = stops.GetStartColour();
 775     const wxColour c2 = stops.GetEndColour();
 776
 777     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 778     static const CGFloat input_value_range [2] = { 0, 1 };
 779     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 780     m_gradientComponents = new CGFloat[8] ;
 781     m_gradientComponents[0] = (CGFloat) (c1.Red() / 255.0);
 782     m_gradientComponents[1] = (CGFloat) (c1.Green() / 255.0);
 783     m_gradientComponents[2] = (CGFloat) (c1.Blue() / 255.0);
 784     m_gradientComponents[3] = (CGFloat) (c1.Alpha() / 255.0);
 785     m_gradientComponents[4] = (CGFloat) (c2.Red() / 255.0);
 786     m_gradientComponents[5] = (CGFloat) (c2.Green() / 255.0);
 787     m_gradientComponents[6] = (CGFloat) (c2.Blue() / 255.0);
 788     m_gradientComponents[7] = (CGFloat) (c2.Alpha() / 255.0);
 789
 790     return CGFunctionCreate ( m_gradientComponents,  1,
 791                             input_value_range,
 792                             4,
 793                             output_value_ranges,
 794                             &callbacks);
 795 }
 796
 797 //
 798 // Font
 799 //
 800
 801 #if wxOSX_USE_IPHONE
 802
 803 extern UIFont* CreateUIFont( const wxFont& font );
 804 extern void DrawTextInContext( CGContextRef context, CGPoint where, UIFont *font, NSString* text );
 805 extern CGSize MeasureTextInContext( UIFont *font, NSString* text );
 806
 807 #endif
 808
 809 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 810 {
 811 public:
 812     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 813     ~wxMacCoreGraphicsFontData();
 814
 815 #if wxOSX_USE_ATSU_TEXT
 816     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 817 #endif
 818 #if wxOSX_USE_CORE_TEXT
 819     CTFontRef OSXGetCTFont() const { return m_ctFont ; }
 820 #endif
 821     wxColour GetColour() const { return m_colour ; }
 822
 823     bool GetUnderlined() const { return m_underlined ; }
 824 #if wxOSX_USE_IPHONE
 825     UIFont* GetUIFont() const { return m_uiFont; }
 826 #endif
 827 private :
 828     wxColour m_colour;
 829     bool m_underlined;
 830 #if wxOSX_USE_ATSU_TEXT
 831     ATSUStyle m_macATSUIStyle;
 832 #endif
 833 #if wxOSX_USE_CORE_TEXT
 834     wxCFRef< CTFontRef > m_ctFont;
 835 #endif
 836 #if wxOSX_USE_IPHONE
 837     UIFont*  m_uiFont;
 838 #endif
 839 };
 840
 841 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 842 {
 843     m_colour = col;
 844     m_underlined = font.GetUnderlined();
 845
 846 #if wxOSX_USE_CORE_TEXT
 847     m_ctFont.reset( wxMacCreateCTFont( font ) );
 848 #endif
 849 #if wxOSX_USE_IPHONE
 850     m_uiFont = CreateUIFont(font);
 851     wxMacCocoaRetain( m_uiFont );
 852 #endif
 853 #if wxOSX_USE_ATSU_TEXT
 854     OSStatus status = noErr;
 855     m_macATSUIStyle = NULL;
 856
 857     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 858
 859     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 860
 861     // we need the scale here ...
 862
 863     Fixed atsuSize = IntToFixed( int( 1 * font.GetPointSize()) );
 864     RGBColor atsuColor ;
 865     col.GetRGBColor( &atsuColor );
 866     ATSUAttributeTag atsuTags[] =
 867     {
 868             kATSUSizeTag ,
 869             kATSUColorTag ,
 870     };
 871     ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
 872     {
 873             sizeof( Fixed ) ,
 874             sizeof( RGBColor ) ,
 875     };
 876     ATSUAttributeValuePtr atsuValues[WXSIZEOF(atsuTags)] =
 877     {
 878             &atsuSize ,
 879             &atsuColor ,
 880     };
 881
 882     status = ::ATSUSetAttributes(
 883         m_macATSUIStyle, WXSIZEOF(atsuTags),
 884         atsuTags, atsuSizes, atsuValues);
 885
 886     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 887 #endif
 888 }
 889
 890 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 891 {
 892 #if wxOSX_USE_CORE_TEXT
 893 #endif
 894 #if wxOSX_USE_ATSU_TEXT
 895     if ( m_macATSUIStyle )
 896     {
 897         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 898         m_macATSUIStyle = NULL;
 899     }
 900 #endif
 901 #if wxOSX_USE_IPHONE
 902     wxMacCocoaRelease( m_uiFont );
 903 #endif
 904 }
 905
 906 class wxMacCoreGraphicsBitmapData : public wxGraphicsObjectRefData
 907 {
 908 public:
 909     wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome );
 910     ~wxMacCoreGraphicsBitmapData();
 911
 912     virtual CGImageRef GetBitmap() { return m_bitmap; }
 913     bool IsMonochrome() { return m_monochrome; }
 914 private :
 915     CGImageRef m_bitmap;
 916     bool m_monochrome;
 917 };
 918
 919 wxMacCoreGraphicsBitmapData::wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome ) : wxGraphicsObjectRefData( renderer ),
 920     m_bitmap(bitmap), m_monochrome(monochrome)
 921 {
 922 }
 923
 924 wxMacCoreGraphicsBitmapData::~wxMacCoreGraphicsBitmapData()
 925 {
 926     CGImageRelease( m_bitmap );
 927 }
 928
 929 //
 930 // Graphics Matrix
 931 //
 932
 933 //-----------------------------------------------------------------------------
 934 // wxMacCoreGraphicsMatrix declaration
 935 //-----------------------------------------------------------------------------
 936
 937 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
 938 {
 939 public :
 940     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
 941
 942     virtual ~wxMacCoreGraphicsMatrixData() ;
 943
 944     virtual wxGraphicsObjectRefData *Clone() const ;
 945
 946     // concatenates the matrix
 947     virtual void Concat( const wxGraphicsMatrixData *t );
 948
 949     // sets the matrix to the respective values
 950     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 951         wxDouble tx=0.0, wxDouble ty=0.0);
 952
 953     // gets the component valuess of the matrix
 954     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 955                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 956
 957     // makes this the inverse matrix
 958     virtual void Invert();
 959
 960     // returns true if the elements of the transformation matrix are equal ?
 961     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 962
 963     // return true if this is the identity matrix
 964     virtual bool IsIdentity() const;
 965
 966     //
 967     // transformation
 968     //
 969
 970     // add the translation to this matrix
 971     virtual void Translate( wxDouble dx , wxDouble dy );
 972
 973     // add the scale to this matrix
 974     virtual void Scale( wxDouble xScale , wxDouble yScale );
 975
 976     // add the rotation to this matrix (radians)
 977     virtual void Rotate( wxDouble angle );
 978
 979     //
 980     // apply the transforms
 981     //
 982
 983     // applies that matrix to the point
 984     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 985
 986     // applies the matrix except for translations
 987     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 988
 989     // returns the native representation
 990     virtual void * GetNativeMatrix() const;
 991
 992 private :
 993     CGAffineTransform m_matrix;
 994 } ;
 995
 996 //-----------------------------------------------------------------------------
 997 // wxMacCoreGraphicsMatrix implementation
 998 //-----------------------------------------------------------------------------
 999
1000 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
1001 {
1002 }
1003
1004 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
1005 {
1006 }
1007
1008 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
1009 {
1010     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
1011     m->m_matrix = m_matrix ;
1012     return m;
1013 }
1014
1015 // concatenates the matrix
1016 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
1017 {
1018     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
1019 }
1020
1021 // sets the matrix to the respective values
1022 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1023     wxDouble tx, wxDouble ty)
1024 {
1025     m_matrix = CGAffineTransformMake((CGFloat) a,(CGFloat) b,(CGFloat) c,(CGFloat) d,(CGFloat) tx,(CGFloat) ty);
1026 }
1027
1028 // gets the component valuess of the matrix
1029 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
1030                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
1031 {
1032     if (a)  *a = m_matrix.a;
1033     if (b)  *b = m_matrix.b;
1034     if (c)  *c = m_matrix.c;
1035     if (d)  *d = m_matrix.d;
1036     if (tx) *tx= m_matrix.tx;
1037     if (ty) *ty= m_matrix.ty;
1038 }
1039
1040 // makes this the inverse matrix
1041 void wxMacCoreGraphicsMatrixData::Invert()
1042 {
1043     m_matrix = CGAffineTransformInvert( m_matrix );
1044 }
1045
1046 // returns true if the elements of the transformation matrix are equal ?
1047 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1048 {
1049     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
1050 }
1051
1052 // return true if this is the identity matrix
1053 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
1054 {
1055     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
1056         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
1057 }
1058
1059 //
1060 // transformation
1061 //
1062
1063 // add the translation to this matrix
1064 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
1065 {
1066     m_matrix = CGAffineTransformTranslate( m_matrix, (CGFloat) dx, (CGFloat) dy);
1067 }
1068
1069 // add the scale to this matrix
1070 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1071 {
1072     m_matrix = CGAffineTransformScale( m_matrix, (CGFloat) xScale, (CGFloat) yScale);
1073 }
1074
1075 // add the rotation to this matrix (radians)
1076 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
1077 {
1078     m_matrix = CGAffineTransformRotate( m_matrix, (CGFloat) angle);
1079 }
1080
1081 //
1082 // apply the transforms
1083 //
1084
1085 // applies that matrix to the point
1086 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1087 {
1088     CGPoint pt = CGPointApplyAffineTransform( CGPointMake((CGFloat) *x,(CGFloat) *y), m_matrix);
1089
1090     *x = pt.x;
1091     *y = pt.y;
1092 }
1093
1094 // applies the matrix except for translations
1095 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1096 {
1097     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake((CGFloat) *dx,(CGFloat) *dy) , m_matrix );
1098     *dx = sz.width;
1099     *dy = sz.height;
1100 }
1101
1102 // returns the native representation
1103 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
1104 {
1105     return (void*) &m_matrix;
1106 }
1107
1108 //
1109 // Graphics Path
1110 //
1111
1112 //-----------------------------------------------------------------------------
1113 // wxMacCoreGraphicsPath declaration
1114 //-----------------------------------------------------------------------------
1115
1116 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
1117 {
1118 public :
1119     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
1120
1121     ~wxMacCoreGraphicsPathData();
1122
1123     virtual wxGraphicsObjectRefData *Clone() const;
1124
1125     // begins a new subpath at (x,y)
1126     virtual void MoveToPoint( wxDouble x, wxDouble y );
1127
1128     // adds a straight line from the current point to (x,y)
1129     virtual void AddLineToPoint( wxDouble x, wxDouble y );
1130
1131     // adds a cubic Bezier curve from the current point, using two control points and an end point
1132     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
1133
1134     // closes the current sub-path
1135     virtual void CloseSubpath();
1136
1137     // gets the last point of the current path, (0,0) if not yet set
1138     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
1139
1140     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1141     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
1142
1143     //
1144     // These are convenience functions which - if not available natively will be assembled
1145     // using the primitives from above
1146     //
1147
1148     // adds a quadratic Bezier curve from the current point, using a control point and an end point
1149     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
1150
1151     // appends a rectangle as a new closed subpath
1152     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1153
1154     // appends a circle as a new closed subpath
1155     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
1156
1157     // appends an ellipsis as a new closed subpath fitting the passed rectangle
1158     virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
1159
1160     // 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)
1161     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
1162
1163     // adds another path
1164     virtual void AddPath( const wxGraphicsPathData* path );
1165
1166     // returns the native path
1167     virtual void * GetNativePath() const { return m_path; }
1168
1169     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
1170     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
1171
1172     // transforms each point of this path by the matrix
1173     virtual void Transform( const wxGraphicsMatrixData* matrix );
1174
1175     // gets the bounding box enclosing all points (possibly including control points)
1176     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
1177
1178     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
1179 private :
1180     CGMutablePathRef m_path;
1181 };
1182
1183 //-----------------------------------------------------------------------------
1184 // wxMacCoreGraphicsPath implementation
1185 //-----------------------------------------------------------------------------
1186
1187 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1188 {
1189     if ( path )
1190         m_path = path;
1191     else
1192         m_path = CGPathCreateMutable();
1193 }
1194
1195 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1196 {
1197     CGPathRelease( m_path );
1198 }
1199
1200 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1201 {
1202     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1203     return clone ;
1204 }
1205
1206
1207 // opens (starts) a new subpath
1208 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1209 {
1210     CGPathMoveToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1211 }
1212
1213 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1214 {
1215     CGPathAddLineToPoint( m_path , NULL , (CGFloat) x1 , (CGFloat) y1 );
1216 }
1217
1218 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1219 {
1220     CGPathAddCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) cx2, (CGFloat) cy2, (CGFloat) x , (CGFloat) y );
1221 }
1222
1223 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1224 {
1225     CGPathAddQuadCurveToPoint( m_path , NULL , (CGFloat) cx1 , (CGFloat) cy1 , (CGFloat) x , (CGFloat) y );
1226 }
1227
1228 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1229 {
1230     CGRect cgRect = { { (CGFloat) x , (CGFloat) y } , { (CGFloat) w , (CGFloat) h } };
1231     CGPathAddRect( m_path , NULL , cgRect );
1232 }
1233
1234 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1235 {
1236     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x-r,y-r,2*r,2*r));
1237 }
1238
1239 void wxMacCoreGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1240 {
1241     CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x,y,w,h));
1242 }
1243
1244 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1245 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1246 {
1247     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1248     CGPathAddArc( m_path, NULL , (CGFloat) x, (CGFloat) y, (CGFloat) r, (CGFloat) startAngle, (CGFloat) endAngle, !clockwise);
1249 }
1250
1251 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1252 {
1253     CGPathAddArcToPoint( m_path, NULL , (CGFloat) x1, (CGFloat) y1, (CGFloat) x2, (CGFloat) y2, (CGFloat) r);
1254 }
1255
1256 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1257 {
1258     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1259 }
1260
1261 // closes the current subpath
1262 void wxMacCoreGraphicsPathData::CloseSubpath()
1263 {
1264     CGPathCloseSubpath( m_path );
1265 }
1266
1267 // gets the last point of the current path, (0,0) if not yet set
1268 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1269 {
1270     CGPoint p = CGPathGetCurrentPoint( m_path );
1271     *x = p.x;
1272     *y = p.y;
1273 }
1274
1275 // transforms each point of this path by the matrix
1276 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1277 {
1278     CGMutablePathRef p = CGPathCreateMutable() ;
1279     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1280     CGPathRelease( m_path );
1281     m_path = p;
1282 }
1283
1284 // gets the bounding box enclosing all points (possibly including control points)
1285 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1286 {
1287     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1288     *x = bounds.origin.x;
1289     *y = bounds.origin.y;
1290     *w = bounds.size.width;
1291     *h = bounds.size.height;
1292 }
1293
1294 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle) const
1295 {
1296     return CGPathContainsPoint( m_path, NULL, CGPointMake((CGFloat) x,(CGFloat) y), fillStyle == wxODDEVEN_RULE );
1297 }
1298
1299 //
1300 // Graphics Context
1301 //
1302
1303 //-----------------------------------------------------------------------------
1304 // wxMacCoreGraphicsContext declaration
1305 //-----------------------------------------------------------------------------
1306
1307 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1308 {
1309 public:
1310     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1311
1312 #if wxOSX_USE_CARBON
1313     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1314 #endif
1315
1316     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1317
1318     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1319
1320     wxMacCoreGraphicsContext();
1321
1322     ~wxMacCoreGraphicsContext();
1323
1324     void Init();
1325
1326     // returns the size of the graphics context in device coordinates
1327     virtual void GetSize( wxDouble* width, wxDouble* height);
1328
1329     virtual void StartPage( wxDouble width, wxDouble height );
1330
1331     virtual void EndPage();
1332
1333     virtual void Flush();
1334
1335     // push the current state of the context, ie the transformation matrix on a stack
1336     virtual void PushState();
1337
1338     // pops a stored state from the stack
1339     virtual void PopState();
1340
1341     // clips drawings to the region
1342     virtual void Clip( const wxRegion &region );
1343
1344     // clips drawings to the rect
1345     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1346
1347     // resets the clipping to original extent
1348     virtual void ResetClip();
1349
1350     virtual void * GetNativeContext();
1351
1352     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
1353
1354     virtual bool SetCompositionMode(wxCompositionMode op);
1355
1356     virtual void BeginLayer(wxDouble opacity);
1357
1358     virtual void EndLayer();
1359
1360     //
1361     // transformation
1362     //
1363
1364     // translate
1365     virtual void Translate( wxDouble dx , wxDouble dy );
1366
1367     // scale
1368     virtual void Scale( wxDouble xScale , wxDouble yScale );
1369
1370     // rotate (radians)
1371     virtual void Rotate( wxDouble angle );
1372
1373     // concatenates this transform with the current transform of this context
1374     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1375
1376     // sets the transform of this context
1377     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1378
1379     // gets the matrix of this context
1380     virtual wxGraphicsMatrix GetTransform() const;
1381     //
1382     // setting the paint
1383     //
1384
1385     // strokes along a path with the current pen
1386     virtual void StrokePath( const wxGraphicsPath &path );
1387
1388     // fills a path with the current brush
1389     virtual void FillPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1390
1391     // draws a path by first filling and then stroking
1392     virtual void DrawPath( const wxGraphicsPath &path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
1393
1394     virtual bool ShouldOffset() const
1395     {
1396         int penwidth = 0 ;
1397         if ( !m_pen.IsNull() )
1398         {
1399             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1400             if ( penwidth == 0 )
1401                 penwidth = 1;
1402         }
1403         return ( penwidth % 2 ) == 1;
1404     }
1405     //
1406     // text
1407     //
1408
1409     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1410         wxDouble *descent, wxDouble *externalLeading ) const;
1411
1412     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1413
1414     //
1415     // image support
1416     //
1417
1418     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1419
1420     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1421
1422     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1423
1424     void SetNativeContext( CGContextRef cg );
1425
1426     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsContext)
1427
1428 private:
1429     bool EnsureIsValid();
1430
1431     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
1432     virtual void DoDrawRotatedText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1433
1434     CGContextRef m_cgContext;
1435 #if wxOSX_USE_CARBON
1436     WindowRef m_windowRef;
1437 #else
1438     WXWidget m_view;
1439 #endif
1440     bool m_contextSynthesized;
1441     CGAffineTransform m_windowTransform;
1442     wxDouble m_width;
1443     wxDouble m_height;
1444     bool m_invisible;
1445
1446 #if wxOSX_USE_COCOA_OR_CARBON
1447     wxCFRef<HIShapeRef> m_clipRgn;
1448 #endif
1449 };
1450
1451 //-----------------------------------------------------------------------------
1452 // device context implementation
1453 //
1454 // more and more of the dc functionality should be implemented by calling
1455 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1456 // also coordinate conversions should be moved to native matrix ops
1457 //-----------------------------------------------------------------------------
1458
1459 // we always stock two context states, one at entry, to be able to preserve the
1460 // state we were called with, the other one after changing to HI Graphics orientation
1461 // (this one is used for getting back clippings etc)
1462
1463 //-----------------------------------------------------------------------------
1464 // wxMacCoreGraphicsContext implementation
1465 //-----------------------------------------------------------------------------
1466
1467 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1468
1469 class wxQuartzOffsetHelper
1470 {
1471 public :
1472     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1473     {
1474         m_cg = cg;
1475         m_offset = offset;
1476         if ( m_offset )
1477         {
1478             m_userOffset = CGContextConvertSizeToUserSpace( m_cg, CGSizeMake( 0.5 , 0.5 ) );
1479             CGContextTranslateCTM( m_cg, m_userOffset.width , m_userOffset.height );
1480         }
1481     }
1482     ~wxQuartzOffsetHelper( )
1483     {
1484         if ( m_offset )
1485             CGContextTranslateCTM( m_cg, -m_userOffset.width , -m_userOffset.height );
1486     }
1487 public :
1488     CGSize m_userOffset;
1489     CGContextRef m_cg;
1490     bool m_offset;
1491 } ;
1492
1493 void wxMacCoreGraphicsContext::Init()
1494 {
1495     m_cgContext = NULL;
1496     m_contextSynthesized = false;
1497     m_width = 0;
1498     m_height = 0;
1499 #if wxOSX_USE_CARBON
1500     m_windowRef = NULL;
1501 #endif
1502 #if wxOSX_USE_COCOA_OR_IPHONE
1503     m_view = NULL;
1504 #endif
1505     m_invisible = false;
1506 }
1507
1508 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1509 {
1510     Init();
1511     SetNativeContext(cgcontext);
1512     m_width = width;
1513     m_height = height;
1514 }
1515
1516 #if wxOSX_USE_CARBON
1517 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1518 {
1519     Init();
1520     m_windowRef = window;
1521 }
1522 #endif
1523
1524 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1525 {
1526     Init();
1527
1528     wxSize sz = window->GetSize();
1529     m_width = sz.x;
1530     m_height = sz.y;
1531
1532 #if wxOSX_USE_COCOA_OR_IPHONE
1533     m_view = window->GetHandle();
1534
1535 #if wxOSX_USE_COCOA
1536     if ( ! window->GetPeer()->IsFlipped() )
1537     {
1538         m_windowTransform = CGAffineTransformMakeTranslation( 0 , m_height );
1539         m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1540     }
1541     else
1542 #endif
1543     {
1544         m_windowTransform = CGAffineTransformIdentity;
1545     }
1546 #else
1547     int originX , originY;
1548     originX = originY = 0;
1549     Rect bounds = { 0,0,0,0 };
1550     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1551     window->MacWindowToRootWindow( &originX , &originY );
1552     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1553     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1554     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1555     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1556 #endif
1557 }
1558
1559 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1560 {
1561     Init();
1562 }
1563
1564 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1565 {
1566     Init();
1567     wxLogDebug(wxT("Illegal Constructor called"));
1568 }
1569
1570 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1571 {
1572     SetNativeContext(NULL);
1573 }
1574
1575 void wxMacCoreGraphicsContext::GetSize( wxDouble* width, wxDouble* height)
1576 {
1577     *width = m_width;
1578     *height = m_height;
1579 }
1580
1581
1582 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1583 {
1584     CGRect r;
1585     if ( width != 0 && height != 0)
1586         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) width  , (CGFloat) height );
1587     else
1588         r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) m_width  , (CGFloat) m_height );
1589
1590     CGContextBeginPage(m_cgContext,  &r );
1591 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1592 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1593 }
1594
1595 void wxMacCoreGraphicsContext::EndPage()
1596 {
1597     CGContextEndPage(m_cgContext);
1598 }
1599
1600 void wxMacCoreGraphicsContext::Flush()
1601 {
1602     CGContextFlush(m_cgContext);
1603 }
1604
1605 bool wxMacCoreGraphicsContext::EnsureIsValid()
1606 {
1607     if ( !m_cgContext )
1608     {
1609         if (m_invisible)
1610             return false;
1611
1612 #if wxOSX_USE_COCOA
1613         if ( wxOSXLockFocus(m_view) )
1614         {
1615             m_cgContext = wxOSXGetContextFromCurrentContext();
1616             wxASSERT_MSG( m_cgContext != NULL, wxT("Unable to retrieve drawing context from View"));
1617         }
1618         else
1619         {
1620             m_invisible = true;
1621         }
1622 #endif
1623 #if wxOSX_USE_IPHONE
1624         m_cgContext = wxOSXGetContextFromCurrentContext();
1625         if ( m_cgContext == NULL )
1626         {
1627             m_invisible = true;
1628         }
1629 #endif
1630 #if wxOSX_USE_CARBON
1631         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1632         if ( status != noErr )
1633         {
1634             wxFAIL_MSG("Cannot nest wxDCs on the same window");
1635         }
1636 #endif
1637         if ( m_cgContext )
1638         {
1639             CGContextSaveGState( m_cgContext );
1640             CGContextConcatCTM( m_cgContext, m_windowTransform );
1641             CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
1642             m_contextSynthesized = true;
1643 #if wxOSX_USE_COCOA_OR_CARBON
1644             if ( m_clipRgn.get() )
1645             {
1646                 // the clip region is in device coordinates, so we convert this again to user coordinates
1647                 wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
1648                 CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1649                 HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1650                 // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1651                 if ( HIShapeIsEmpty(hishape))
1652                 {
1653                     CGRect empty = CGRectMake( 0,0,0,0 );
1654                     CGContextClipToRect( m_cgContext, empty );
1655                 }
1656                 else
1657                 {
1658                     HIShapeReplacePathInCGContext( hishape, m_cgContext );
1659                     CGContextClip( m_cgContext );
1660                 }
1661             }
1662 #endif
1663             CGContextSaveGState( m_cgContext );
1664
1665 #if 0 // turn on for debugging of clientdc
1666             static float color = 0.5 ;
1667             static int channel = 0 ;
1668             CGRect bounds = CGRectMake(-1000,-1000,2000,2000);
1669             CGContextSetRGBFillColor( m_cgContext, channel == 0 ? color : 0.5 ,
1670                 channel == 1 ? color : 0.5 , channel == 2 ? color : 0.5 , 1 );
1671             CGContextFillRect( m_cgContext, bounds );
1672             color += 0.1 ;
1673             if ( color > 0.9 )
1674             {
1675                 color = 0.5 ;
1676                 channel++ ;
1677                 if ( channel == 3 )
1678                     channel = 0 ;
1679             }
1680 #endif
1681         }
1682     }
1683     return m_cgContext != NULL;
1684 }
1685
1686 bool wxMacCoreGraphicsContext::SetAntialiasMode(wxAntialiasMode antialias)
1687 {
1688     if (!EnsureIsValid())
1689         return true;
1690
1691     if (m_antialias == antialias)
1692         return true;
1693
1694     m_antialias = antialias;
1695
1696     bool antialiasMode;
1697     switch (antialias)
1698     {
1699         case wxANTIALIAS_DEFAULT:
1700             antialiasMode = true;
1701             break;
1702         case wxANTIALIAS_NONE:
1703             antialiasMode = false;
1704             break;
1705         default:
1706             return false;
1707     }
1708     CGContextSetShouldAntialias(m_cgContext, antialiasMode);
1709     return true;
1710 }
1711
1712 bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
1713 {
1714     if (!EnsureIsValid())
1715         return true;
1716
1717     if ( m_composition == op )
1718         return true;
1719
1720     m_composition = op;
1721
1722     if (m_composition == wxCOMPOSITION_DEST)
1723         return true;
1724
1725 #if wxOSX_USE_COCOA_OR_CARBON
1726     if ( UMAGetSystemVersion() < 0x1060 )
1727     {
1728         CGCompositeOperation cop = kCGCompositeOperationSourceOver;
1729         CGBlendMode mode = kCGBlendModeNormal;
1730         switch( op )
1731         {
1732         case wxCOMPOSITION_CLEAR:
1733             cop = kCGCompositeOperationClear;
1734             break;
1735         case wxCOMPOSITION_SOURCE:
1736             cop = kCGCompositeOperationCopy;
1737             break;
1738         case wxCOMPOSITION_OVER:
1739             mode = kCGBlendModeNormal;
1740             break;
1741         case wxCOMPOSITION_IN:
1742             cop = kCGCompositeOperationSourceIn;
1743             break;
1744         case wxCOMPOSITION_OUT:
1745             cop = kCGCompositeOperationSourceOut;
1746             break;
1747         case wxCOMPOSITION_ATOP:
1748             cop = kCGCompositeOperationSourceAtop;
1749             break;
1750         case wxCOMPOSITION_DEST_OVER:
1751             cop = kCGCompositeOperationDestinationOver;
1752             break;
1753         case wxCOMPOSITION_DEST_IN:
1754             cop = kCGCompositeOperationDestinationIn;
1755             break;
1756         case wxCOMPOSITION_DEST_OUT:
1757             cop = kCGCompositeOperationDestinationOut;
1758             break;
1759         case wxCOMPOSITION_DEST_ATOP:
1760            cop = kCGCompositeOperationDestinationAtop;
1761             break;
1762         case wxCOMPOSITION_XOR:
1763             cop = kCGCompositeOperationXOR;
1764             break;
1765 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1766         case wxCOMPOSITION_ADD:
1767             mode = kCGBlendModePlusLighter ;
1768             break;
1769 #endif
1770         default:
1771             return false;
1772         }
1773         if ( cop != kCGCompositeOperationSourceOver )
1774             CGContextSetCompositeOperation(m_cgContext, cop);
1775         else
1776             CGContextSetBlendMode(m_cgContext, mode);
1777     }
1778 #endif
1779 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
1780     else
1781     {
1782         CGBlendMode mode = kCGBlendModeNormal;
1783         switch( op )
1784         {
1785         case wxCOMPOSITION_CLEAR:
1786             mode = kCGBlendModeClear;
1787             break;
1788         case wxCOMPOSITION_SOURCE:
1789             mode = kCGBlendModeCopy;
1790             break;
1791         case wxCOMPOSITION_OVER:
1792             mode = kCGBlendModeNormal;
1793             break;
1794         case wxCOMPOSITION_IN:
1795             mode = kCGBlendModeSourceIn;
1796             break;
1797         case wxCOMPOSITION_OUT:
1798             mode = kCGBlendModeSourceOut;
1799             break;
1800         case wxCOMPOSITION_ATOP:
1801             mode = kCGBlendModeSourceAtop;
1802             break;
1803         case wxCOMPOSITION_DEST_OVER:
1804             mode = kCGBlendModeDestinationOver;
1805             break;
1806         case wxCOMPOSITION_DEST_IN:
1807             mode = kCGBlendModeDestinationIn;
1808             break;
1809         case wxCOMPOSITION_DEST_OUT:
1810             mode = kCGBlendModeDestinationOut;
1811             break;
1812         case wxCOMPOSITION_DEST_ATOP:
1813            mode = kCGBlendModeDestinationAtop;
1814             break;
1815         case wxCOMPOSITION_XOR:
1816             mode = kCGBlendModeXOR;
1817             break;
1818
1819         case wxCOMPOSITION_ADD:
1820             mode = kCGBlendModePlusLighter ;
1821             break;
1822         default:
1823             return false;
1824         }
1825         CGContextSetBlendMode(m_cgContext, mode);
1826     }
1827 #endif
1828     return true;
1829 }
1830
1831 void wxMacCoreGraphicsContext::BeginLayer(wxDouble opacity)
1832 {
1833     CGContextSaveGState(m_cgContext);
1834     CGContextSetAlpha(m_cgContext, (CGFloat) opacity);
1835     CGContextBeginTransparencyLayer(m_cgContext, 0);
1836 }
1837
1838 void wxMacCoreGraphicsContext::EndLayer()
1839 {
1840     CGContextEndTransparencyLayer(m_cgContext);
1841     CGContextRestoreGState(m_cgContext);
1842 }
1843
1844 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1845 {
1846 #if wxOSX_USE_COCOA_OR_CARBON
1847     if( m_cgContext )
1848     {
1849         wxCFRef<HIShapeRef> shape = wxCFRefFromGet(region.GetWXHRGN());
1850         // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
1851         if ( HIShapeIsEmpty(shape))
1852         {
1853             CGRect empty = CGRectMake( 0,0,0,0 );
1854             CGContextClipToRect( m_cgContext, empty );
1855         }
1856         else
1857         {
1858             HIShapeReplacePathInCGContext( shape, m_cgContext );
1859             CGContextClip( m_cgContext );
1860         }
1861     }
1862     else
1863     {
1864         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1865         // to regions we try at least to have correct translations
1866         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
1867
1868         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1869         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1870         m_clipRgn.reset(mutableShape);
1871     }
1872 #else
1873     // allow usage as measuring context
1874     // wxASSERT_MSG( m_cgContext != NULL, "Needs a valid context for clipping" );
1875 #endif
1876 }
1877
1878 // clips drawings to the rect
1879 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1880 {
1881     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
1882     if ( m_cgContext )
1883     {
1884         CGContextClipToRect( m_cgContext, r );
1885     }
1886     else
1887     {
1888 #if wxOSX_USE_COCOA_OR_CARBON
1889         // the clipping itself must be stored as device coordinates, otherwise
1890         // we cannot apply it back correctly
1891         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1892         m_clipRgn.reset(HIShapeCreateWithRect(&r));
1893 #else
1894     // allow usage as measuring context
1895     // wxFAIL_MSG( "Needs a valid context for clipping" );
1896 #endif
1897     }
1898 }
1899
1900     // resets the clipping to original extent
1901 void wxMacCoreGraphicsContext::ResetClip()
1902 {
1903     if ( m_cgContext )
1904     {
1905         // there is no way for clearing the clip, we can only revert to the stored
1906         // state, but then we have to make sure everything else is NOT restored
1907         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1908         CGContextRestoreGState( m_cgContext );
1909         CGContextSaveGState( m_cgContext );
1910         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1911         transformNew = CGAffineTransformInvert( transformNew ) ;
1912         CGContextConcatCTM( m_cgContext, transformNew);
1913         CGContextConcatCTM( m_cgContext, transform);
1914     }
1915     else
1916     {
1917 #if wxOSX_USE_COCOA_OR_CARBON
1918         m_clipRgn.reset();
1919 #else
1920     // allow usage as measuring context
1921     // wxFAIL_MSG( "Needs a valid context for clipping" );
1922 #endif
1923     }
1924 }
1925
1926 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1927 {
1928     if ( m_pen.IsNull() )
1929         return ;
1930
1931     if (!EnsureIsValid())
1932         return;
1933
1934     if (m_composition == wxCOMPOSITION_DEST)
1935         return;
1936
1937     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1938
1939     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1940     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1941     CGContextStrokePath( m_cgContext );
1942 }
1943
1944 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
1945 {
1946     if (!EnsureIsValid())
1947         return;
1948
1949     if (m_composition == wxCOMPOSITION_DEST)
1950         return;
1951
1952     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1953     {
1954         // when using shading, we cannot draw pen and brush at the same time
1955         // revert to the base implementation of first filling and then stroking
1956         wxGraphicsContext::DrawPath( path, fillStyle );
1957         return;
1958     }
1959
1960     CGPathDrawingMode mode = kCGPathFill ;
1961     if ( m_brush.IsNull() )
1962     {
1963         if ( m_pen.IsNull() )
1964             return;
1965         else
1966             mode = kCGPathStroke;
1967     }
1968     else
1969     {
1970         if ( m_pen.IsNull() )
1971         {
1972             if ( fillStyle == wxODDEVEN_RULE )
1973                 mode = kCGPathEOFill;
1974             else
1975                 mode = kCGPathFill;
1976         }
1977         else
1978         {
1979             if ( fillStyle == wxODDEVEN_RULE )
1980                 mode = kCGPathEOFillStroke;
1981             else
1982                 mode = kCGPathFillStroke;
1983         }
1984     }
1985
1986     if ( !m_brush.IsNull() )
1987         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1988     if ( !m_pen.IsNull() )
1989         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1990
1991     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1992
1993     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1994     CGContextDrawPath( m_cgContext , mode );
1995 }
1996
1997 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
1998 {
1999     if ( m_brush.IsNull() )
2000         return;
2001
2002     if (!EnsureIsValid())
2003         return;
2004
2005     if (m_composition == wxCOMPOSITION_DEST)
2006         return;
2007
2008     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2009     {
2010         CGContextSaveGState( m_cgContext );
2011         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2012         CGContextClip( m_cgContext );
2013         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2014         CGContextRestoreGState( m_cgContext);
2015     }
2016     else
2017     {
2018         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2019         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2020         if ( fillStyle == wxODDEVEN_RULE )
2021             CGContextEOFillPath( m_cgContext );
2022         else
2023             CGContextFillPath( m_cgContext );
2024     }
2025 }
2026
2027 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
2028 {
2029     // we allow either setting or clearing but not replacing
2030     wxASSERT( m_cgContext == NULL || cg == NULL );
2031
2032     if ( m_cgContext )
2033     {
2034         CGContextRestoreGState( m_cgContext );
2035         CGContextRestoreGState( m_cgContext );
2036         if ( m_contextSynthesized )
2037         {
2038 #if wxOSX_USE_CARBON
2039             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
2040 #endif
2041 #if wxOSX_USE_COCOA
2042             wxOSXUnlockFocus(m_view);
2043 #endif
2044         }
2045         else
2046             CGContextRelease(m_cgContext);
2047     }
2048
2049     m_cgContext = cg;
2050
2051     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
2052     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
2053     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
2054     // for this one operation.
2055
2056     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
2057     // can be removed.
2058     if (m_cgContext)
2059     {
2060         CGContextRetain(m_cgContext);
2061         CGContextSaveGState( m_cgContext );
2062         CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
2063         CGContextSaveGState( m_cgContext );
2064         m_contextSynthesized = false;
2065     }
2066 }
2067
2068 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
2069 {
2070     if ( m_cgContext )
2071         CGContextTranslateCTM( m_cgContext, (CGFloat) dx, (CGFloat) dy );
2072     else
2073         m_windowTransform = CGAffineTransformTranslate(m_windowTransform, (CGFloat) dx, (CGFloat) dy);
2074 }
2075
2076 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
2077 {
2078     if ( m_cgContext )
2079         CGContextScaleCTM( m_cgContext , (CGFloat) xScale , (CGFloat) yScale );
2080     else
2081         m_windowTransform = CGAffineTransformScale(m_windowTransform, (CGFloat) xScale, (CGFloat) yScale);
2082 }
2083
2084 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
2085 {
2086     if ( m_cgContext )
2087         CGContextRotateCTM( m_cgContext , (CGFloat) angle );
2088     else
2089         m_windowTransform = CGAffineTransformRotate(m_windowTransform, (CGFloat) angle);
2090 }
2091
2092 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2093 {
2094     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
2095     DrawBitmap(bitmap, x, y, w, h);
2096 }
2097
2098 void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2099 {
2100     if (!EnsureIsValid())
2101         return;
2102
2103     if (m_composition == wxCOMPOSITION_DEST)
2104         return;
2105
2106 #ifdef __WXMAC__
2107     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
2108     CGImageRef image = refdata->GetBitmap();
2109     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
2110     if ( refdata->IsMonochrome() == 1 )
2111     {
2112         // is is a mask, the '1' in the mask tell where to draw the current brush
2113         if (  !m_brush.IsNull() )
2114         {
2115             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
2116             {
2117                 // TODO clip to mask
2118             /*
2119                 CGContextSaveGState( m_cgContext );
2120                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
2121                 CGContextClip( m_cgContext );
2122                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
2123                 CGContextRestoreGState( m_cgContext);
2124             */
2125             }
2126             else
2127             {
2128                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
2129                 wxMacDrawCGImage( m_cgContext , &r , image );
2130             }
2131         }
2132     }
2133     else
2134     {
2135         wxMacDrawCGImage( m_cgContext , &r , image );
2136     }
2137 #endif
2138 }
2139
2140 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2141 {
2142     if (!EnsureIsValid())
2143         return;
2144
2145     if (m_composition == wxCOMPOSITION_DEST)
2146         return;
2147
2148     CGRect r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) w , (CGFloat) h );
2149     CGContextSaveGState( m_cgContext );
2150     CGContextTranslateCTM( m_cgContext,(CGFloat) x ,(CGFloat) (y + h) );
2151     CGContextScaleCTM( m_cgContext, 1, -1 );
2152 #if wxOSX_USE_COCOA_OR_CARBON
2153     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
2154         NULL , kPlotIconRefNormalFlags , icon.GetHICON() );
2155 #endif
2156     CGContextRestoreGState( m_cgContext );
2157 }
2158
2159 void wxMacCoreGraphicsContext::PushState()
2160 {
2161     if (!EnsureIsValid())
2162         return;
2163
2164     CGContextSaveGState( m_cgContext );
2165 }
2166
2167 void wxMacCoreGraphicsContext::PopState()
2168 {
2169     if (!EnsureIsValid())
2170         return;
2171
2172     CGContextRestoreGState( m_cgContext );
2173 }
2174
2175 void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDouble y )
2176 {
2177     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2178
2179     if (!EnsureIsValid())
2180         return;
2181
2182     if (m_composition == wxCOMPOSITION_DEST)
2183         return;
2184
2185 #if wxOSX_USE_CORE_TEXT
2186     if ( UMAGetSystemVersion() >= 0x1050 )
2187     {
2188         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2189         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2190         CTFontRef font = fref->OSXGetCTFont();
2191         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2192         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
2193         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
2194          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
2195         CFTypeRef values[] = { font, col, underlined };
2196         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2197                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2198         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2199         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2200
2201         y += CTFontGetAscent(font);
2202
2203         CGContextSaveGState(m_cgContext);
2204         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2205         CGContextScaleCTM(m_cgContext, 1, -1);
2206         CGContextSetTextPosition(m_cgContext, 0, 0);
2207         CTLineDraw( line, m_cgContext );
2208         CGContextRestoreGState(m_cgContext);
2209         CFRelease( col );
2210         return;
2211     }
2212 #endif
2213 #if wxOSX_USE_ATSU_TEXT
2214     {
2215         DrawText(str, x, y, 0.0);
2216         return;
2217     }
2218 #endif
2219 #if wxOSX_USE_IPHONE
2220     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2221
2222     CGContextSaveGState(m_cgContext);
2223
2224     CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
2225     CGContextSetTextDrawingMode (m_cgContext, kCGTextFill);
2226     CGContextSetFillColorWithColor( m_cgContext, col );
2227
2228     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2229     DrawTextInContext( m_cgContext, CGPointMake( x, y ), fref->GetUIFont() , text.AsNSString() );
2230
2231     CGContextRestoreGState(m_cgContext);
2232     CFRelease( col );
2233 #endif
2234 }
2235
2236 void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
2237                                                  wxDouble x, wxDouble y,
2238                                                  wxDouble angle)
2239 {
2240     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2241
2242     if (!EnsureIsValid())
2243         return;
2244
2245     if (m_composition == wxCOMPOSITION_DEST)
2246         return;
2247
2248 #if wxOSX_USE_CORE_TEXT
2249     if ( UMAGetSystemVersion() >= 0x1050 )
2250     {
2251         // default implementation takes care of rotation and calls non rotated DrawText afterwards
2252         wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2253         return;
2254     }
2255 #endif
2256 #if wxOSX_USE_ATSU_TEXT
2257     {
2258         OSStatus status = noErr;
2259         ATSUTextLayout atsuLayout;
2260         wxMacUniCharBuffer unibuf( str );
2261         UniCharCount chars = unibuf.GetChars();
2262
2263         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2264         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2265                                                    &chars , &style , &atsuLayout );
2266
2267         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
2268
2269         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2270         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2271
2272         int iAngle = int( angle * RAD2DEG );
2273         if ( abs(iAngle) > 0 )
2274         {
2275             Fixed atsuAngle = IntToFixed( iAngle );
2276             ATSUAttributeTag atsuTags[] =
2277             {
2278                 kATSULineRotationTag ,
2279             };
2280             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2281             {
2282                 sizeof( Fixed ) ,
2283             };
2284             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2285             {
2286                 &atsuAngle ,
2287             };
2288             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2289                                              atsuTags, atsuSizes, atsuValues );
2290         }
2291
2292         {
2293             ATSUAttributeTag atsuTags[] =
2294             {
2295                 kATSUCGContextTag ,
2296             };
2297             ByteCount atsuSizes[WXSIZEOF(atsuTags)] =
2298             {
2299                 sizeof( CGContextRef ) ,
2300             };
2301             ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =
2302             {
2303                 &m_cgContext ,
2304             };
2305             status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),
2306                                              atsuTags, atsuSizes, atsuValues );
2307         }
2308
2309         ATSUTextMeasurement textBefore, textAfter;
2310         ATSUTextMeasurement ascent, descent;
2311
2312         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2313                                             &textBefore , &textAfter, &ascent , &descent );
2314
2315         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2316
2317         Rect rect;
2318         x += (int)(sin(angle) * FixedToInt(ascent));
2319         y += (int)(cos(angle) * FixedToInt(ascent));
2320
2321         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2322                                         IntToFixed(x) , IntToFixed(y) , &rect );
2323         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
2324
2325         CGContextSaveGState(m_cgContext);
2326         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
2327         CGContextScaleCTM(m_cgContext, 1, -1);
2328         status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2329                                 IntToFixed(0) , IntToFixed(0) );
2330
2331         wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
2332
2333         CGContextRestoreGState(m_cgContext);
2334
2335         ::ATSUDisposeTextLayout(atsuLayout);
2336
2337         return;
2338     }
2339 #endif
2340 #if wxOSX_USE_IPHONE
2341     // default implementation takes care of rotation and calls non rotated DrawText afterwards
2342     wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
2343 #endif
2344 }
2345
2346 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2347                             wxDouble *descent, wxDouble *externalLeading ) const
2348 {
2349     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::GetTextExtent - no valid font set") );
2350
2351     if ( width )
2352         *width = 0;
2353     if ( height )
2354         *height = 0;
2355     if ( descent )
2356         *descent = 0;
2357     if ( externalLeading )
2358         *externalLeading = 0;
2359
2360     if (str.empty())
2361         return;
2362
2363 #if wxOSX_USE_CORE_TEXT
2364     if ( UMAGetSystemVersion() >= 0x1050 )
2365     {
2366         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2367         CTFontRef font = fref->OSXGetCTFont();
2368
2369         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2370         CFStringRef keys[] = { kCTFontAttributeName  };
2371         CFTypeRef values[] = { font };
2372         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2373                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2374         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2375         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2376
2377         // round the returned extent: this is probably more correct anyhow but
2378         // we also need to do it to be consistent with GetPartialTextExtents()
2379         // below and avoid strange situation when the last partial extent
2380         // returned by it could have been greater than the full extent returned
2381         // by us
2382         CGFloat a, d, l;
2383         int w = CTLineGetTypographicBounds(line, &a, &d, &l) + 0.5;
2384
2385         if ( height )
2386             *height = a+d+l;
2387         if ( descent )
2388             *descent = d;
2389         if ( externalLeading )
2390             *externalLeading = l;
2391         if ( width )
2392             *width = w;
2393         return;
2394     }
2395 #endif
2396 #if wxOSX_USE_ATSU_TEXT
2397     {
2398         OSStatus status = noErr;
2399
2400         ATSUTextLayout atsuLayout;
2401         wxMacUniCharBuffer unibuf( str );
2402         UniCharCount chars = unibuf.GetChars();
2403
2404         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2405         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2406                                                    &chars , &style , &atsuLayout );
2407
2408         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2409
2410         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2411         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2412
2413         ATSUTextMeasurement textBefore, textAfter;
2414         ATSUTextMeasurement textAscent, textDescent;
2415
2416         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2417                                             &textBefore , &textAfter, &textAscent , &textDescent );
2418
2419         if ( height )
2420             *height = FixedToInt(textAscent + textDescent);
2421         if ( descent )
2422             *descent = FixedToInt(textDescent);
2423         if ( externalLeading )
2424             *externalLeading = 0;
2425         if ( width )
2426             *width = FixedToInt(textAfter - textBefore);
2427
2428         ::ATSUDisposeTextLayout(atsuLayout);
2429
2430         return;
2431     }
2432 #endif
2433 #if wxOSX_USE_IPHONE
2434     wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2435
2436     wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2437     CGSize sz = MeasureTextInContext( fref->GetUIFont() , text.AsNSString() );
2438
2439     if ( height )
2440         *height = sz.height;
2441         /*
2442     if ( descent )
2443         *descent = FixedToInt(textDescent);
2444     if ( externalLeading )
2445         *externalLeading = 0;
2446         */
2447     if ( width )
2448         *width = sz.width;
2449 #endif
2450 }
2451
2452 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2453 {
2454     widths.Empty();
2455     widths.Add(0, text.length());
2456
2457     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
2458
2459     if (text.empty())
2460         return;
2461
2462 #if wxOSX_USE_CORE_TEXT
2463     {
2464         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2465         CTFontRef font = fref->OSXGetCTFont();
2466
2467         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
2468         CFStringRef keys[] = { kCTFontAttributeName  };
2469         CFTypeRef values[] = { font };
2470         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2471                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2472         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, t, attributes) );
2473         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2474
2475         int chars = text.length();
2476         for ( int pos = 0; pos < (int)chars; pos ++ )
2477         {
2478             widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL );
2479         }
2480
2481         return;
2482     }
2483 #endif
2484 #if wxOSX_USE_ATSU_TEXT
2485     {
2486         OSStatus status = noErr;
2487         ATSUTextLayout atsuLayout;
2488         wxMacUniCharBuffer unibuf( text );
2489         UniCharCount chars = unibuf.GetChars();
2490
2491         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2492         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2493                                           &chars , &style , &atsuLayout );
2494
2495         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2496
2497         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2498         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2499
2500 // new implementation from JS, keep old one just in case
2501 #if 0
2502         for ( int pos = 0; pos < (int)chars; pos ++ )
2503         {
2504             unsigned long actualNumberOfBounds = 0;
2505             ATSTrapezoid glyphBounds;
2506
2507             // We get a single bound, since the text should only require one. If it requires more, there is an issue
2508             OSStatus result;
2509             result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
2510                                         kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
2511             if (result != noErr || actualNumberOfBounds != 1 )
2512                 return;
2513
2514             widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
2515             //unsigned char uch = s[i];
2516         }
2517 #else
2518         ATSLayoutRecord *layoutRecords = NULL;
2519         ItemCount glyphCount = 0;
2520
2521         // Get the glyph extents
2522         OSStatus err = ::ATSUDirectGetLayoutDataArrayPtrFromTextLayout(atsuLayout,
2523                                                                        0,
2524                                                                        kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2525                                                                        (void **)
2526                                                                        &layoutRecords,
2527                                                                        &glyphCount);
2528         wxASSERT(glyphCount == (text.length()+1));
2529
2530         if ( err == noErr && glyphCount == (text.length()+1))
2531         {
2532             for ( int pos = 1; pos < (int)glyphCount ; pos ++ )
2533             {
2534                 widths[pos-1] = FixedToInt( layoutRecords[pos].realPos );
2535             }
2536         }
2537
2538         ::ATSUDirectReleaseLayoutDataArrayPtr(NULL,
2539                                               kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,
2540                                               (void **) &layoutRecords);
2541 #endif
2542         ::ATSUDisposeTextLayout(atsuLayout);
2543     }
2544 #endif
2545 #if wxOSX_USE_IPHONE
2546     // TODO core graphics text implementation here
2547 #endif
2548 }
2549
2550 void * wxMacCoreGraphicsContext::GetNativeContext()
2551 {
2552     return m_cgContext;
2553 }
2554
2555 // concatenates this transform with the current transform of this context
2556 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
2557 {
2558     if ( m_cgContext )
2559         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2560     else
2561         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
2562 }
2563
2564 // sets the transform of this context
2565 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
2566 {
2567     if ( m_cgContext )
2568     {
2569         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2570         transform = CGAffineTransformInvert( transform ) ;
2571         CGContextConcatCTM( m_cgContext, transform);
2572         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2573     }
2574     else
2575     {
2576         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
2577     }
2578 }
2579
2580 // gets the matrix of this context
2581 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
2582 {
2583     wxGraphicsMatrix m = CreateMatrix();
2584     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
2585         CGContextGetCTM( m_cgContext ));
2586     return m;
2587 }
2588
2589 //
2590 // Renderer
2591 //
2592
2593 //-----------------------------------------------------------------------------
2594 // wxMacCoreGraphicsRenderer declaration
2595 //-----------------------------------------------------------------------------
2596
2597 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2598 {
2599 public :
2600     wxMacCoreGraphicsRenderer() {}
2601
2602     virtual ~wxMacCoreGraphicsRenderer() {}
2603
2604     // Context
2605
2606     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2607     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2608 #if wxUSE_PRINTING_ARCHITECTURE
2609     virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
2610 #endif
2611
2612     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2613
2614     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2615
2616     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2617
2618     virtual wxGraphicsContext * CreateMeasuringContext();
2619
2620     // Path
2621
2622     virtual wxGraphicsPath CreatePath();
2623
2624     // Matrix
2625
2626     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2627         wxDouble tx=0.0, wxDouble ty=0.0);
2628
2629
2630     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2631
2632     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2633
2634     virtual wxGraphicsBrush
2635     CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2636                               wxDouble x2, wxDouble y2,
2637                               const wxGraphicsGradientStops& stops);
2638
2639     virtual wxGraphicsBrush
2640     CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2641                               wxDouble xc, wxDouble yc,
2642                               wxDouble radius,
2643                               const wxGraphicsGradientStops& stops);
2644
2645    // sets the font
2646     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2647
2648     // create a native bitmap representation
2649     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
2650
2651     // create a graphics bitmap from a native bitmap
2652     virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
2653
2654     // create a native bitmap representation
2655     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) ;
2656 private :
2657     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2658 } ;
2659
2660 //-----------------------------------------------------------------------------
2661 // wxMacCoreGraphicsRenderer implementation
2662 //-----------------------------------------------------------------------------
2663
2664 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2665
2666 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2667
2668 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2669 {
2670     return &gs_MacCoreGraphicsRenderer;
2671 }
2672
2673 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc )
2674 {
2675     const wxDCImpl* impl = dc.GetImpl();
2676     wxWindowDCImpl *win_impl = wxDynamicCast( impl, wxWindowDCImpl );
2677     if (win_impl)
2678     {
2679         int w, h;
2680         win_impl->GetSize( &w, &h );
2681         CGContextRef cgctx = 0;
2682
2683         wxASSERT_MSG(win_impl->GetWindow(), "Invalid wxWindow in wxMacCoreGraphicsRenderer::CreateContext");
2684         if (win_impl->GetWindow())
2685             cgctx =  (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef());
2686
2687         if (cgctx != 0)
2688             return new wxMacCoreGraphicsContext( this, cgctx, (wxDouble) w, (wxDouble) h );
2689     }
2690     return NULL;
2691 }
2692
2693 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC& dc )
2694 {
2695 #ifdef __WXMAC__
2696     const wxDCImpl* impl = dc.GetImpl();
2697     wxMemoryDCImpl *mem_impl = wxDynamicCast( impl, wxMemoryDCImpl );
2698     if (mem_impl)
2699     {
2700         int w, h;
2701         mem_impl->GetSize( &w, &h );
2702         return new wxMacCoreGraphicsContext( this,
2703             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2704     }
2705 #endif
2706     return NULL;
2707 }
2708
2709 #if wxUSE_PRINTING_ARCHITECTURE
2710 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxPrinterDC& dc )
2711 {
2712 #ifdef __WXMAC__
2713     const wxDCImpl* impl = dc.GetImpl();
2714     wxPrinterDCImpl *print_impl = wxDynamicCast( impl, wxPrinterDCImpl );
2715     if (print_impl)
2716     {
2717         int w, h;
2718         print_impl->GetSize( &w, &h );
2719         return new wxMacCoreGraphicsContext( this,
2720             (CGContextRef)(print_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2721     }
2722 #endif
2723     return NULL;
2724 }
2725 #endif
2726
2727 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2728 {
2729     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2730 }
2731
2732 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2733 {
2734 #if wxOSX_USE_CARBON
2735     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
2736 #else
2737     wxUnusedVar(window);
2738     return NULL;
2739 #endif
2740 }
2741
2742 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2743 {
2744     return new wxMacCoreGraphicsContext(this, window );
2745 }
2746
2747 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2748 {
2749     return new wxMacCoreGraphicsContext(this);
2750 }
2751
2752 // Path
2753
2754 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2755 {
2756     wxGraphicsPath m;
2757     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2758     return m;
2759 }
2760
2761
2762 // Matrix
2763
2764 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2765     wxDouble tx, wxDouble ty)
2766 {
2767     wxGraphicsMatrix m;
2768     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2769     data->Set( a,b,c,d,tx,ty ) ;
2770     m.SetRefData(data);
2771     return m;
2772 }
2773
2774 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2775 {
2776     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
2777         return wxNullGraphicsPen;
2778     else
2779     {
2780         wxGraphicsPen p;
2781         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2782         return p;
2783     }
2784 }
2785
2786 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2787 {
2788     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2789         return wxNullGraphicsBrush;
2790     else
2791     {
2792         wxGraphicsBrush p;
2793         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2794         return p;
2795     }
2796 }
2797
2798 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
2799 {
2800     if ( bmp.Ok() )
2801     {
2802         wxGraphicsBitmap p;
2803         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );
2804         return p;
2805     }
2806     else
2807         return wxNullGraphicsBitmap;
2808 }
2809
2810 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
2811 {
2812     if ( bitmap != NULL )
2813     {
2814         wxGraphicsBitmap p;
2815         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , (CGImageRef) bitmap, false ));
2816         return p;
2817     }
2818     else
2819         return wxNullGraphicsBitmap;
2820 }
2821
2822 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h  )
2823 {
2824     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
2825     CGImageRef img = refdata->GetBitmap();
2826     if ( img )
2827     {
2828         wxGraphicsBitmap p;
2829         CGImageRef subimg = CGImageCreateWithImageInRect(img,CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h ));
2830         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , subimg, refdata->IsMonochrome() ) );
2831         return p;
2832     }
2833     else
2834         return wxNullGraphicsBitmap;
2835 }
2836
2837 wxGraphicsBrush
2838 wxMacCoreGraphicsRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2839                                                      wxDouble x2, wxDouble y2,
2840                                                      const wxGraphicsGradientStops& stops)
2841 {
2842     wxGraphicsBrush p;
2843     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2844     d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
2845     p.SetRefData(d);
2846     return p;
2847 }
2848
2849 wxGraphicsBrush
2850 wxMacCoreGraphicsRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2851                                                      wxDouble xc, wxDouble yc,
2852                                                      wxDouble radius,
2853                                                      const wxGraphicsGradientStops& stops)
2854 {
2855     wxGraphicsBrush p;
2856     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2857     d->CreateRadialGradientBrush(xo, yo, xc, yc, radius, stops);
2858     p.SetRefData(d);
2859     return p;
2860 }
2861
2862 // sets the font
2863 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2864 {
2865     if ( font.Ok() )
2866     {
2867         wxGraphicsFont p;
2868         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2869         return p;
2870     }
2871     else
2872         return wxNullGraphicsFont;
2873 }
2874
2875 //
2876 // CoreGraphics Helper Methods
2877 //
2878
2879 // Data Providers and Consumers
2880
2881 size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
2882 {
2883     CFMutableDataRef data = (CFMutableDataRef) info;
2884     if ( data )
2885     {
2886         CFDataAppendBytes( data, (const UInt8*) bytes, count );
2887     }
2888     return count;
2889 }
2890
2891 void wxMacReleaseCFDataProviderCallback(void *info,
2892                                       const void *WXUNUSED(data),
2893                                       size_t WXUNUSED(count))
2894 {
2895     if ( info )
2896         CFRelease( (CFDataRef) info );
2897 }
2898
2899 void wxMacReleaseCFDataConsumerCallback( void *info )
2900 {
2901     if ( info )
2902         CFRelease( (CFDataRef) info );
2903 }
2904
2905 CGDataProviderRef wxMacCGDataProviderCreateWithCFData( CFDataRef data )
2906 {
2907     if ( data == NULL )
2908         return NULL;
2909
2910     return CGDataProviderCreateWithCFData( data );
2911 }
2912
2913 CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data )
2914 {
2915     if ( data == NULL )
2916         return NULL;
2917
2918     return CGDataConsumerCreateWithCFData( data );
2919 }
2920
2921 void
2922 wxMacReleaseMemoryBufferProviderCallback(void *info,
2923                                          const void * WXUNUSED_UNLESS_DEBUG(data),
2924                                          size_t WXUNUSED(size))
2925 {
2926     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
2927
2928     wxASSERT( data == membuf->GetData() ) ;
2929
2930     delete membuf ;
2931 }
2932
2933 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf )
2934 {
2935     wxMemoryBuffer* b = new wxMemoryBuffer( buf );
2936     if ( b->GetDataLen() == 0 )
2937         return NULL;
2938
2939     return CGDataProviderCreateWithData( b , (const void *) b->GetData() , b->GetDataLen() ,
2940                                                  wxMacReleaseMemoryBufferProviderCallback );
2941 }