src/mac/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/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
  16 #ifndef WX_PRECOMP
  17     #include "wx/dcclient.h"
  18     #include "wx/dcmemory.h"
  19     #include "wx/log.h"
  20     #include "wx/region.h"
  21     #include "wx/image.h"
  22     #include "wx/icon.h"
  23 #endif
  24
  25 #include "wx/mac/uma.h"
  26
  27 #ifdef __MSL__
  28     #if __MSL__ >= 0x6000
  29         #include "math.h"
  30         // in case our functions were defined outside std, we make it known all the same
  31         namespace std { }
  32         using namespace std;
  33     #endif
  34 #endif
  35
  36 #include "wx/mac/private.h"
  37
  38 #if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5
  39 typedef float CGFloat;
  40 #endif
  41
  42 //-----------------------------------------------------------------------------
  43 // constants
  44 //-----------------------------------------------------------------------------
  45
  46 #if !defined( __DARWIN__ ) || defined(__MWERKS__)
  47 #ifndef M_PI
  48 const double M_PI = 3.14159265358979;
  49 #endif
  50 #endif
  51
  52 static const double RAD2DEG = 180.0 / M_PI;
  53
  54 //
  55 // Pen, Brushes and Fonts
  56 //
  57
  58 #pragma mark -
  59 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
  60
  61 OSStatus wxMacDrawCGImage(
  62                   CGContextRef    inContext,
  63                   const HIRect *  inBounds,
  64                   CGImageRef      inImage)
  65 {
  66 #ifdef __LP64__
  67     // todo flip
  68     CGContextDrawImage(inContext, *inBounds, inImage );
  69 #else
  70     HIViewDrawCGImage( inContext, inBounds, inImage );
  71 #endif
  72 }
  73
  74 // CGPattern wrapper class: always allocate on heap, never call destructor
  75
  76 class wxMacCoreGraphicsPattern
  77 {
  78 public :
  79     wxMacCoreGraphicsPattern() {}
  80
  81     // is guaranteed to be called only with a non-Null CGContextRef
  82     virtual void Render( CGContextRef ctxRef ) = 0;
  83
  84     operator CGPatternRef() const { return m_patternRef; }
  85
  86 protected :
  87     virtual ~wxMacCoreGraphicsPattern()
  88     {
  89         // as this is called only when the m_patternRef is been released;
  90         // don't release it again
  91     }
  92
  93     static void _Render( void *info, CGContextRef ctxRef )
  94     {
  95         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
  96         if ( self && ctxRef )
  97             self->Render( ctxRef );
  98     }
  99
 100     static void _Dispose( void *info )
 101     {
 102         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 103         delete self;
 104     }
 105
 106     CGPatternRef m_patternRef;
 107
 108     static const CGPatternCallbacks ms_Callbacks;
 109 };
 110
 111 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
 112
 113 class ImagePattern : public wxMacCoreGraphicsPattern
 114 {
 115 public :
 116     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 117     {
 118         wxASSERT( bmp && bmp->Ok() );
 119
 120         Init( (CGImageRef) bmp->CGImageCreate() , transform );
 121     }
 122
 123     // ImagePattern takes ownership of CGImageRef passed in
 124     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 125     {
 126         if ( image )
 127             CFRetain( image );
 128
 129         Init( image , transform );
 130     }
 131
 132     virtual void Render( CGContextRef ctxRef )
 133     {
 134         if (m_image != NULL)
 135             wxMacDrawCGImage( ctxRef, &m_imageBounds, m_image );
 136     }
 137
 138 protected :
 139     void Init( CGImageRef image, const CGAffineTransform& transform )
 140     {
 141         m_image = image;
 142         if ( m_image )
 143         {
 144             m_imageBounds = CGRectMake( 0.0, 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 145             m_patternRef = CGPatternCreate(
 146                 this , m_imageBounds, transform ,
 147                 m_imageBounds.size.width, m_imageBounds.size.height,
 148                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 149         }
 150     }
 151
 152     virtual ~ImagePattern()
 153     {
 154         if ( m_image )
 155             CGImageRelease( m_image );
 156     }
 157
 158     CGImageRef m_image;
 159     CGRect m_imageBounds;
 160 };
 161
 162 class HatchPattern : public wxMacCoreGraphicsPattern
 163 {
 164 public :
 165     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 166     {
 167         m_hatch = hatchstyle;
 168         m_imageBounds = CGRectMake( 0.0, 0.0, 8.0 , 8.0 );
 169         m_patternRef = CGPatternCreate(
 170             this , m_imageBounds, transform ,
 171             m_imageBounds.size.width, m_imageBounds.size.height,
 172             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 173     }
 174
 175     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 176     {
 177         CGContextStrokeLineSegments( ctxRef , pts , count );
 178     }
 179
 180     virtual void Render( CGContextRef ctxRef )
 181     {
 182         switch ( m_hatch )
 183         {
 184             case wxBDIAGONAL_HATCH :
 185                 {
 186                     CGPoint pts[] =
 187                     {
 188                     { 8.0 , 0.0 } , { 0.0 , 8.0 }
 189                     };
 190                     StrokeLineSegments( ctxRef , pts , 2 );
 191                 }
 192                 break;
 193
 194             case wxCROSSDIAG_HATCH :
 195                 {
 196                     CGPoint pts[] =
 197                     {
 198                         { 0.0 , 0.0 } , { 8.0 , 8.0 } ,
 199                         { 8.0 , 0.0 } , { 0.0 , 8.0 }
 200                     };
 201                     StrokeLineSegments( ctxRef , pts , 4 );
 202                 }
 203                 break;
 204
 205             case wxFDIAGONAL_HATCH :
 206                 {
 207                     CGPoint pts[] =
 208                     {
 209                     { 0.0 , 0.0 } , { 8.0 , 8.0 }
 210                     };
 211                     StrokeLineSegments( ctxRef , pts , 2 );
 212                 }
 213                 break;
 214
 215             case wxCROSS_HATCH :
 216                 {
 217                     CGPoint pts[] =
 218                     {
 219                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 220                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 221                     };
 222                     StrokeLineSegments( ctxRef , pts , 4 );
 223                 }
 224                 break;
 225
 226             case wxHORIZONTAL_HATCH :
 227                 {
 228                     CGPoint pts[] =
 229                     {
 230                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 231                     };
 232                     StrokeLineSegments( ctxRef , pts , 2 );
 233                 }
 234                 break;
 235
 236             case wxVERTICAL_HATCH :
 237                 {
 238                     CGPoint pts[] =
 239                     {
 240                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 241                     };
 242                     StrokeLineSegments( ctxRef , pts , 2 );
 243                 }
 244                 break;
 245
 246             default:
 247                 break;
 248         }
 249     }
 250
 251 protected :
 252     virtual ~HatchPattern() {}
 253
 254     CGRect      m_imageBounds;
 255     int         m_hatch;
 256 };
 257
 258 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 259 {
 260 public:
 261     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 262     ~wxMacCoreGraphicsPenData();
 263
 264     void Init();
 265     virtual void Apply( wxGraphicsContext* context );
 266     virtual wxDouble GetWidth() { return m_width; }
 267
 268 protected :
 269     CGLineCap m_cap;
 270     wxMacCFRefHolder<CGColorRef> m_color;
 271     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 272
 273     CGLineJoin m_join;
 274     CGFloat m_width;
 275
 276     int m_count;
 277     const CGFloat *m_lengths;
 278     CGFloat *m_userLengths;
 279
 280
 281     bool m_isPattern;
 282     wxMacCFRefHolder<CGPatternRef> m_pattern;
 283     CGFloat* m_patternColorComponents;
 284 };
 285
 286 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 287     wxGraphicsObjectRefData( renderer )
 288 {
 289     Init();
 290
 291     CGFloat components[4] = { pen.GetColour().Red() / 255.0 , pen.GetColour().Green() / 255.0 ,
 292             pen.GetColour().Blue() / 255.0 , pen.GetColour().Alpha() / 255.0 } ;
 293     m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 294
 295     // TODO: * m_dc->m_scaleX
 296     m_width = pen.GetWidth();
 297     if (m_width <= 0.0)
 298         m_width = 0.1;
 299
 300     switch ( pen.GetCap() )
 301     {
 302         case wxCAP_ROUND :
 303             m_cap = kCGLineCapRound;
 304             break;
 305
 306         case wxCAP_PROJECTING :
 307             m_cap = kCGLineCapSquare;
 308             break;
 309
 310         case wxCAP_BUTT :
 311             m_cap = kCGLineCapButt;
 312             break;
 313
 314         default :
 315             m_cap = kCGLineCapButt;
 316             break;
 317     }
 318
 319     switch ( pen.GetJoin() )
 320     {
 321         case wxJOIN_BEVEL :
 322             m_join = kCGLineJoinBevel;
 323             break;
 324
 325         case wxJOIN_MITER :
 326             m_join = kCGLineJoinMiter;
 327             break;
 328
 329         case wxJOIN_ROUND :
 330             m_join = kCGLineJoinRound;
 331             break;
 332
 333         default :
 334             m_join = kCGLineJoinMiter;
 335             break;
 336     }
 337
 338     const CGFloat dashUnit = m_width < 1.0 ? 1.0 : m_width;
 339
 340     const CGFloat dotted[] = { dashUnit , dashUnit + 2.0 };
 341     static const CGFloat short_dashed[] = { 9.0 , 6.0 };
 342     static const CGFloat dashed[] = { 19.0 , 9.0 };
 343     static const CGFloat dotted_dashed[] = { 9.0 , 6.0 , 3.0 , 3.0 };
 344
 345     switch ( pen.GetStyle() )
 346     {
 347         case wxSOLID :
 348             break;
 349
 350         case wxDOT :
 351             m_count = WXSIZEOF(dotted);
 352             m_userLengths = new CGFloat[ m_count ] ;
 353             memcpy( m_userLengths, dotted, sizeof(dotted) );
 354             m_lengths = m_userLengths;
 355             break;
 356
 357         case wxLONG_DASH :
 358             m_count = WXSIZEOF(dashed);
 359             m_lengths = dashed;
 360             break;
 361
 362         case wxSHORT_DASH :
 363             m_count = WXSIZEOF(short_dashed);
 364             m_lengths = short_dashed;
 365             break;
 366
 367         case wxDOT_DASH :
 368             m_count = WXSIZEOF(dotted_dashed);
 369             m_lengths = dotted_dashed;
 370             break;
 371
 372         case wxUSER_DASH :
 373             wxDash *dashes;
 374             m_count = pen.GetDashes( &dashes );
 375             if ((dashes != NULL) && (m_count > 0))
 376             {
 377                 m_userLengths = new CGFloat[m_count];
 378                 for ( int i = 0; i < m_count; ++i )
 379                 {
 380                     m_userLengths[i] = dashes[i] * dashUnit;
 381
 382                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 383                         m_userLengths[i] = dashUnit + 2.0;
 384                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 385                         m_userLengths[i] = dashUnit;
 386                 }
 387             }
 388             m_lengths = m_userLengths;
 389             break;
 390
 391         case wxSTIPPLE :
 392             {
 393                 wxBitmap* bmp = pen.GetStipple();
 394                 if ( bmp && bmp->Ok() )
 395                 {
 396                     m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 397                     m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 398                     m_patternColorComponents = new CGFloat[1] ;
 399                     m_patternColorComponents[0] = 1.0;
 400                     m_isPattern = true;
 401                 }
 402             }
 403             break;
 404
 405         default :
 406             {
 407                 m_isPattern = true;
 408                 m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 409                 m_pattern.Set( *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 410                 m_patternColorComponents = new CGFloat[4] ;
 411                 m_patternColorComponents[0] = pen.GetColour().Red() / 255.0;
 412                 m_patternColorComponents[1] = pen.GetColour().Green() / 255.0;
 413                 m_patternColorComponents[2] = pen.GetColour().Blue() / 255.0;
 414                 m_patternColorComponents[3] =  pen.GetColour().Alpha() / 255.0;
 415             }
 416             break;
 417     }
 418     if ((m_lengths != NULL) && (m_count > 0))
 419     {
 420         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 421         m_cap = kCGLineCapButt;
 422     }
 423 }
 424
 425 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 426 {
 427     delete[] m_userLengths;
 428     delete[] m_patternColorComponents;
 429 }
 430
 431 void wxMacCoreGraphicsPenData::Init()
 432 {
 433     m_lengths = NULL;
 434     m_userLengths = NULL;
 435     m_width = 0;
 436     m_count = 0;
 437     m_patternColorComponents = NULL;
 438     m_isPattern = false;
 439 }
 440
 441 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 442 {
 443     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 444     CGContextSetLineWidth( cg , m_width );
 445     CGContextSetLineJoin( cg , m_join );
 446
 447     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 448     CGContextSetLineCap( cg , m_cap );
 449
 450     if ( m_isPattern )
 451     {
 452         CGAffineTransform matrix = CGContextGetCTM( cg );
 453         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 454         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 455         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 456     }
 457     else
 458     {
 459         if ( context->GetLogicalFunction() == wxINVERT || context->GetLogicalFunction() == wxXOR )
 460         {
 461             CGContextSetRGBStrokeColor( cg , 1.0, 1.0 , 1.0, 1.0 );
 462         }
 463         else
 464             CGContextSetStrokeColorWithColor( cg , m_color );
 465     }
 466 }
 467
 468 //
 469 // Brush
 470 //
 471
 472 static const char *gs_stripedback_xpm[] = {
 473 /* columns rows colors chars-per-pixel */
 474 "4 4 2 1",
 475 ". c #F0F0F0",
 476 "X c #ECECEC",
 477 /* pixels */
 478 "....",
 479 "....",
 480 "XXXX",
 481 "XXXX"
 482 };
 483
 484 wxBitmap gs_stripedback_bmp( wxImage( (const char* const* ) gs_stripedback_xpm  ), -1 ) ;
 485
 486 wxMacCoreGraphicsColour::~wxMacCoreGraphicsColour()
 487 {
 488     delete[] m_patternColorComponents;
 489 }
 490
 491 void wxMacCoreGraphicsColour::Init()
 492 {
 493     m_isPattern = false;
 494     m_patternColorComponents = NULL;
 495 }
 496
 497 void wxMacCoreGraphicsColour::Apply( CGContextRef cgContext )
 498 {
 499     if ( m_isPattern )
 500     {
 501         CGAffineTransform matrix = CGContextGetCTM( cgContext );
 502         CGContextSetPatternPhase( cgContext, CGSizeMake(matrix.tx, matrix.ty) );
 503         CGContextSetFillColorSpace( cgContext , m_colorSpace );
 504         CGContextSetFillPattern( cgContext, m_pattern , m_patternColorComponents );
 505     }
 506     else
 507     {
 508         CGContextSetFillColorWithColor( cgContext, m_color );
 509     }
 510 }
 511
 512 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour()
 513 {
 514     Init();
 515 }
 516
 517 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
 518 {
 519     Init();
 520     if ( brush.GetStyle() == wxSOLID )
 521     {
 522         if ( brush.MacGetBrushKind() == kwxMacBrushTheme )
 523         {
 524             CGColorRef color ;
 525             HIThemeBrushCreateCGColor( brush.MacGetTheme(), &color );
 526             m_color.Set( color ) ;
 527         }
 528         else
 529         {
 530             CGFloat components[4] = { brush.GetColour().Red() / 255.0 , brush.GetColour().Green() / 255.0 ,
 531                 brush.GetColour().Blue() / 255.0 , brush.GetColour().Alpha() / 255.0 } ;
 532             m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 533         }
 534     }
 535     else if ( brush.IsHatch() )
 536     {
 537         m_isPattern = true;
 538         m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 539         m_pattern.Set( *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 540
 541         m_patternColorComponents = new CGFloat[4] ;
 542         m_patternColorComponents[0] = brush.GetColour().Red() / 255.0;
 543         m_patternColorComponents[1] = brush.GetColour().Green() / 255.0;
 544         m_patternColorComponents[2] = brush.GetColour().Blue() / 255.0;
 545         m_patternColorComponents[3] = brush.GetColour().Alpha() / 255.0;
 546     }
 547     else
 548     {
 549         // now brush is a bitmap
 550         wxBitmap* bmp = brush.GetStipple();
 551         if ( bmp && bmp->Ok() )
 552         {
 553             m_isPattern = true;
 554             m_patternColorComponents = new CGFloat[1] ;
 555             m_patternColorComponents[0] = 1.0;
 556             m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 557             m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 558         }
 559     }
 560 }
 561
 562 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 563 {
 564 public:
 565     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 566     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 567     ~wxMacCoreGraphicsBrushData ();
 568
 569     virtual void Apply( wxGraphicsContext* context );
 570     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 571         const wxColour&c1, const wxColour&c2 );
 572     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 573     const wxColour &oColor, const wxColour &cColor );
 574
 575     virtual bool IsShading() { return m_isShading; }
 576     CGShadingRef GetShading() { return m_shading; }
 577 protected:
 578     CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
 579     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 580     virtual void Init();
 581
 582     wxMacCoreGraphicsColour m_cgColor;
 583
 584     bool m_isShading;
 585     CGFunctionRef m_gradientFunction;
 586     CGShadingRef m_shading;
 587     CGFloat *m_gradientComponents;
 588 };
 589
 590 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 591 {
 592     Init();
 593 }
 594
 595 void wxMacCoreGraphicsBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 596         const wxColour&c1, const wxColour&c2 )
 597 {
 598     m_gradientFunction = CreateGradientFunction( c1, c2 );
 599     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake(x1,y1), CGPointMake(x2,y2), m_gradientFunction, true, true ) ;
 600     m_isShading = true ;
 601 }
 602
 603 void wxMacCoreGraphicsBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 604     const wxColour &oColor, const wxColour &cColor )
 605 {
 606     m_gradientFunction = CreateGradientFunction( oColor, cColor );
 607     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake(xo,yo), 0, CGPointMake(xc,yc), radius, m_gradientFunction, true, true ) ;
 608     m_isShading = true ;
 609 }
 610
 611 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer ),
 612     m_cgColor( brush )
 613 {
 614     Init();
 615
 616 }
 617
 618 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 619 {
 620     if ( m_shading )
 621         CGShadingRelease(m_shading);
 622
 623     if( m_gradientFunction )
 624         CGFunctionRelease(m_gradientFunction);
 625
 626     delete[] m_gradientComponents;
 627 }
 628
 629 void wxMacCoreGraphicsBrushData::Init()
 630 {
 631     m_gradientFunction = NULL;
 632     m_shading = NULL;
 633     m_gradientComponents = NULL;
 634     m_isShading = false;
 635 }
 636
 637 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 638 {
 639     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 640
 641     if ( m_isShading )
 642     {
 643         // nothing to set as shades are processed by clipping using the path and filling
 644     }
 645     else
 646     {
 647         m_cgColor.Apply( cg );
 648     }
 649 }
 650
 651 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 652 {
 653     CGFloat* colors = (CGFloat*) info ;
 654     CGFloat f = *in;
 655     for( int i = 0 ; i < 4 ; ++i )
 656     {
 657         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 658     }
 659 }
 660
 661 CGFunctionRef wxMacCoreGraphicsBrushData::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
 662 {
 663     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 664     static const CGFloat input_value_range [2] = { 0, 1 };
 665     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 666     m_gradientComponents = new CGFloat[8] ;
 667     m_gradientComponents[0] = c1.Red() / 255.0;
 668     m_gradientComponents[1] = c1.Green() / 255.0;
 669     m_gradientComponents[2] = c1.Blue() / 255.0;
 670     m_gradientComponents[3] = c1.Alpha() / 255.0;
 671     m_gradientComponents[4] = c2.Red() / 255.0;
 672     m_gradientComponents[5] = c2.Green() / 255.0;
 673     m_gradientComponents[6] = c2.Blue() / 255.0;
 674     m_gradientComponents[7] = c2.Alpha() / 255.0;
 675
 676     return CGFunctionCreate ( m_gradientComponents,  1,
 677                             input_value_range,
 678                             4,
 679                             output_value_ranges,
 680                             &callbacks);
 681 }
 682
 683 //
 684 // Font
 685 //
 686
 687 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 688 {
 689 public:
 690     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 691     ~wxMacCoreGraphicsFontData();
 692
 693     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 694 private :
 695     ATSUStyle m_macATSUIStyle;
 696 };
 697
 698 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 699 {
 700     m_macATSUIStyle = NULL;
 701
 702     OSStatus status;
 703
 704     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 705
 706     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 707
 708     // we need the scale here ...
 709
 710     Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
 711     RGBColor atsuColor ;
 712     col.GetRGBColor( &atsuColor );
 713     ATSUAttributeTag atsuTags[] =
 714     {
 715             kATSUSizeTag ,
 716             kATSUColorTag ,
 717     };
 718     ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 719     {
 720             sizeof( Fixed ) ,
 721             sizeof( RGBColor ) ,
 722     };
 723     ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 724     {
 725             &atsuSize ,
 726             &atsuColor ,
 727     };
 728
 729     status = ::ATSUSetAttributes(
 730         m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
 731         atsuTags, atsuSizes, atsuValues);
 732
 733     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 734 }
 735
 736 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 737 {
 738     if ( m_macATSUIStyle )
 739     {
 740         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 741         m_macATSUIStyle = NULL;
 742     }
 743 }
 744
 745 //
 746 // Graphics Matrix
 747 //
 748
 749 //-----------------------------------------------------------------------------
 750 // wxMacCoreGraphicsMatrix declaration
 751 //-----------------------------------------------------------------------------
 752
 753 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
 754 {
 755 public :
 756     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
 757
 758     virtual ~wxMacCoreGraphicsMatrixData() ;
 759
 760     virtual wxGraphicsObjectRefData *Clone() const ;
 761
 762     // concatenates the matrix
 763     virtual void Concat( const wxGraphicsMatrixData *t );
 764
 765     // sets the matrix to the respective values
 766     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 767         wxDouble tx=0.0, wxDouble ty=0.0);
 768
 769     // gets the component valuess of the matrix
 770     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 771                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 772
 773     // makes this the inverse matrix
 774     virtual void Invert();
 775
 776     // returns true if the elements of the transformation matrix are equal ?
 777     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 778
 779     // return true if this is the identity matrix
 780     virtual bool IsIdentity() const;
 781
 782     //
 783     // transformation
 784     //
 785
 786     // add the translation to this matrix
 787     virtual void Translate( wxDouble dx , wxDouble dy );
 788
 789     // add the scale to this matrix
 790     virtual void Scale( wxDouble xScale , wxDouble yScale );
 791
 792     // add the rotation to this matrix (radians)
 793     virtual void Rotate( wxDouble angle );
 794
 795     //
 796     // apply the transforms
 797     //
 798
 799     // applies that matrix to the point
 800     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 801
 802     // applies the matrix except for translations
 803     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 804
 805     // returns the native representation
 806     virtual void * GetNativeMatrix() const;
 807
 808 private :
 809     CGAffineTransform m_matrix;
 810 } ;
 811
 812 //-----------------------------------------------------------------------------
 813 // wxMacCoreGraphicsMatrix implementation
 814 //-----------------------------------------------------------------------------
 815
 816 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
 817 {
 818 }
 819
 820 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
 821 {
 822 }
 823
 824 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 825 {
 826     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
 827     m->m_matrix = m_matrix ;
 828     return m;
 829 }
 830
 831 // concatenates the matrix
 832 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 833 {
 834     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 835 }
 836
 837 // sets the matrix to the respective values
 838 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 839     wxDouble tx, wxDouble ty)
 840 {
 841     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 842 }
 843
 844 // gets the component valuess of the matrix
 845 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 846                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
 847 {
 848     if (a)  *a = m_matrix.a;
 849     if (b)  *b = m_matrix.b;
 850     if (c)  *c = m_matrix.c;
 851     if (d)  *d = m_matrix.d;
 852     if (tx) *tx= m_matrix.tx;
 853     if (ty) *ty= m_matrix.ty;
 854 }
 855
 856 // makes this the inverse matrix
 857 void wxMacCoreGraphicsMatrixData::Invert()
 858 {
 859     m_matrix = CGAffineTransformInvert( m_matrix );
 860 }
 861
 862 // returns true if the elements of the transformation matrix are equal ?
 863 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 864 {
 865     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 866 }
 867
 868 // return true if this is the identity matrix
 869 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
 870 {
 871     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
 872         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
 873 }
 874
 875 //
 876 // transformation
 877 //
 878
 879 // add the translation to this matrix
 880 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
 881 {
 882     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
 883 }
 884
 885 // add the scale to this matrix
 886 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 887 {
 888     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
 889 }
 890
 891 // add the rotation to this matrix (radians)
 892 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
 893 {
 894     m_matrix = CGAffineTransformRotate( m_matrix, angle);
 895 }
 896
 897 //
 898 // apply the transforms
 899 //
 900
 901 // applies that matrix to the point
 902 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
 903 {
 904     CGPoint pt = CGPointApplyAffineTransform( CGPointMake(*x,*y), m_matrix);
 905
 906     *x = pt.x;
 907     *y = pt.y;
 908 }
 909
 910 // applies the matrix except for translations
 911 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
 912 {
 913     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake(*dx,*dy) , m_matrix );
 914     *dx = sz.width;
 915     *dy = sz.height;
 916 }
 917
 918 // returns the native representation
 919 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
 920 {
 921     return (void*) &m_matrix;
 922 }
 923
 924 //
 925 // Graphics Path
 926 //
 927
 928 //-----------------------------------------------------------------------------
 929 // wxMacCoreGraphicsPath declaration
 930 //-----------------------------------------------------------------------------
 931
 932 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
 933 {
 934 public :
 935     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
 936
 937     ~wxMacCoreGraphicsPathData();
 938
 939     virtual wxGraphicsObjectRefData *Clone() const;
 940
 941     // begins a new subpath at (x,y)
 942     virtual void MoveToPoint( wxDouble x, wxDouble y );
 943
 944     // adds a straight line from the current point to (x,y)
 945     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 946
 947     // adds a cubic Bezier curve from the current point, using two control points and an end point
 948     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 949
 950     // closes the current sub-path
 951     virtual void CloseSubpath();
 952
 953     // gets the last point of the current path, (0,0) if not yet set
 954     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 955
 956     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 957     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
 958
 959     //
 960     // These are convenience functions which - if not available natively will be assembled
 961     // using the primitives from above
 962     //
 963
 964     // adds a quadratic Bezier curve from the current point, using a control point and an end point
 965     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
 966
 967     // appends a rectangle as a new closed subpath
 968     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 969
 970     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 971     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 972
 973     // 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)
 974     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 975
 976     // adds another path
 977     virtual void AddPath( const wxGraphicsPathData* path );
 978
 979     // returns the native path
 980     virtual void * GetNativePath() const { return m_path; }
 981
 982     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 983     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
 984
 985     // transforms each point of this path by the matrix
 986     virtual void Transform( const wxGraphicsMatrixData* matrix );
 987
 988     // gets the bounding box enclosing all points (possibly including control points)
 989     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
 990
 991     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
 992 private :
 993     CGMutablePathRef m_path;
 994 };
 995
 996 //-----------------------------------------------------------------------------
 997 // wxMacCoreGraphicsPath implementation
 998 //-----------------------------------------------------------------------------
 999
1000 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1001 {
1002     if ( path )
1003         m_path = path;
1004     else
1005         m_path = CGPathCreateMutable();
1006 }
1007
1008 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1009 {
1010     CGPathRelease( m_path );
1011 }
1012
1013 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1014 {
1015     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1016     return clone ;
1017 }
1018
1019
1020 // opens (starts) a new subpath
1021 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1022 {
1023     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
1024 }
1025
1026 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1027 {
1028     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
1029 }
1030
1031 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1032 {
1033     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
1034 }
1035
1036 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1037 {
1038     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
1039 }
1040
1041 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1042 {
1043     CGRect cgRect = { { x , y } , { w , h } };
1044     CGPathAddRect( m_path , NULL , cgRect );
1045 }
1046
1047 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1048 {
1049     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1050 }
1051
1052 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1053 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1054 {
1055     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1056     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1057 }
1058
1059 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1060 {
1061     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1062 }
1063
1064 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1065 {
1066     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1067 }
1068
1069 // closes the current subpath
1070 void wxMacCoreGraphicsPathData::CloseSubpath()
1071 {
1072     CGPathCloseSubpath( m_path );
1073 }
1074
1075 // gets the last point of the current path, (0,0) if not yet set
1076 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1077 {
1078     CGPoint p = CGPathGetCurrentPoint( m_path );
1079     *x = p.x;
1080     *y = p.y;
1081 }
1082
1083 // transforms each point of this path by the matrix
1084 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1085 {
1086     CGMutablePathRef p = CGPathCreateMutable() ;
1087     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1088     CGPathRelease( m_path );
1089     m_path = p;
1090 }
1091
1092 // gets the bounding box enclosing all points (possibly including control points)
1093 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1094 {
1095     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1096     *x = bounds.origin.x;
1097     *y = bounds.origin.y;
1098     *w = bounds.size.width;
1099     *h = bounds.size.height;
1100 }
1101
1102 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, int fillStyle) const
1103 {
1104     return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1105 }
1106
1107 //
1108 // Graphics Context
1109 //
1110
1111 //-----------------------------------------------------------------------------
1112 // wxMacCoreGraphicsContext declaration
1113 //-----------------------------------------------------------------------------
1114
1115 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1116 {
1117 public:
1118     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1119
1120     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1121
1122     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1123
1124     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1125
1126     wxMacCoreGraphicsContext();
1127
1128     ~wxMacCoreGraphicsContext();
1129
1130     void Init();
1131
1132     // returns the size of the graphics context in device coordinates
1133     virtual void GetSize( wxDouble* width, wxDouble* height);
1134
1135     virtual void StartPage( wxDouble width, wxDouble height );
1136
1137     virtual void EndPage();
1138
1139     virtual void Flush();
1140
1141     // push the current state of the context, ie the transformation matrix on a stack
1142     virtual void PushState();
1143
1144     // pops a stored state from the stack
1145     virtual void PopState();
1146
1147     // clips drawings to the region
1148     virtual void Clip( const wxRegion &region );
1149
1150     // clips drawings to the rect
1151     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1152
1153     // resets the clipping to original extent
1154     virtual void ResetClip();
1155
1156     virtual void * GetNativeContext();
1157
1158     bool SetLogicalFunction( int function );
1159     //
1160     // transformation
1161     //
1162
1163     // translate
1164     virtual void Translate( wxDouble dx , wxDouble dy );
1165
1166     // scale
1167     virtual void Scale( wxDouble xScale , wxDouble yScale );
1168
1169     // rotate (radians)
1170     virtual void Rotate( wxDouble angle );
1171
1172     // concatenates this transform with the current transform of this context
1173     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1174
1175     // sets the transform of this context
1176     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1177
1178     // gets the matrix of this context
1179     virtual wxGraphicsMatrix GetTransform() const;
1180     //
1181     // setting the paint
1182     //
1183
1184     // strokes along a path with the current pen
1185     virtual void StrokePath( const wxGraphicsPath &path );
1186
1187     // fills a path with the current brush
1188     virtual void FillPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1189
1190     // draws a path by first filling and then stroking
1191     virtual void DrawPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1192
1193     virtual bool ShouldOffset() const
1194     {
1195         int penwidth = 0 ;
1196         if ( !m_pen.IsNull() )
1197         {
1198             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1199             if ( penwidth == 0 )
1200                 penwidth = 1;
1201         }
1202         return ( penwidth % 2 ) == 1;
1203     }
1204     //
1205     // text
1206     //
1207
1208     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1209
1210     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1211
1212     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1213         wxDouble *descent, wxDouble *externalLeading ) const;
1214
1215     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1216
1217     //
1218     // image support
1219     //
1220
1221     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1222
1223     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1224
1225     void SetNativeContext( CGContextRef cg );
1226
1227     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1228     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1229
1230 private:
1231     void EnsureIsValid();
1232
1233     CGContextRef m_cgContext;
1234     WindowRef m_windowRef;
1235     bool m_releaseContext;
1236     CGAffineTransform m_windowTransform;
1237     wxDouble m_width;
1238     wxDouble m_height;
1239
1240     wxMacCFRefHolder<HIShapeRef> m_clipRgn;
1241 };
1242
1243 //-----------------------------------------------------------------------------
1244 // device context implementation
1245 //
1246 // more and more of the dc functionality should be implemented by calling
1247 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1248 // also coordinate conversions should be moved to native matrix ops
1249 //-----------------------------------------------------------------------------
1250
1251 // we always stock two context states, one at entry, to be able to preserve the
1252 // state we were called with, the other one after changing to HI Graphics orientation
1253 // (this one is used for getting back clippings etc)
1254
1255 //-----------------------------------------------------------------------------
1256 // wxMacCoreGraphicsContext implementation
1257 //-----------------------------------------------------------------------------
1258
1259 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1260
1261 class wxQuartzOffsetHelper
1262 {
1263 public :
1264     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1265     {
1266         m_cg = cg;
1267         m_offset = offset;
1268         if ( m_offset )
1269             CGContextTranslateCTM( m_cg, 0.5, 0.5 );
1270     }
1271     ~wxQuartzOffsetHelper( )
1272     {
1273         if ( m_offset )
1274             CGContextTranslateCTM( m_cg, -0.5, -0.5 );
1275     }
1276 public :
1277     CGContextRef m_cg;
1278     bool m_offset;
1279 } ;
1280
1281 void wxMacCoreGraphicsContext::Init()
1282 {
1283     m_cgContext = NULL;
1284     m_releaseContext = false;
1285     m_windowRef = NULL;
1286     m_width = 0;
1287     m_height = 0;
1288
1289     HIRect r = CGRectMake(0,0,0,0);
1290     m_clipRgn.Set(HIShapeCreateWithRect(&r));
1291 }
1292
1293 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1294 {
1295     Init();
1296     SetNativeContext(cgcontext);
1297     m_width = width;
1298     m_height = height;
1299 }
1300
1301 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1302 {
1303     Init();
1304     m_windowRef = window;
1305 }
1306
1307 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1308 {
1309     Init();
1310     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1311     int originX , originY;
1312     originX = originY = 0;
1313     window->MacWindowToRootWindow( &originX , &originY );
1314     Rect bounds;
1315     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1316
1317     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1318     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1319     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1320 }
1321
1322 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1323 {
1324     Init();
1325 }
1326
1327 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1328 {
1329     Init();
1330     wxLogDebug(wxT("Illegal Constructor called"));
1331 }
1332
1333 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1334 {
1335     SetNativeContext(NULL);
1336 }
1337
1338 void wxMacCoreGraphicsContext::GetSize( wxDouble* width, wxDouble* height)
1339 {
1340     *width = m_width;
1341     *height = m_height;
1342 }
1343
1344
1345 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1346 {
1347     CGRect r;
1348     if ( width != 0 && height != 0)
1349         r = CGRectMake( 0 , 0 , width  , height );
1350     else
1351         r = CGRectMake( 0 , 0 , m_width  , m_height );
1352
1353     CGContextBeginPage(m_cgContext,  &r );
1354 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1355 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1356 }
1357
1358 void wxMacCoreGraphicsContext::EndPage()
1359 {
1360     CGContextEndPage(m_cgContext);
1361 }
1362
1363 void wxMacCoreGraphicsContext::Flush()
1364 {
1365     CGContextFlush(m_cgContext);
1366 }
1367
1368 void wxMacCoreGraphicsContext::EnsureIsValid()
1369 {
1370     if ( !m_cgContext )
1371     {
1372         OSStatus status =
1373 #ifndef __LP64__
1374             QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1375 #else
1376             paramErr;
1377 #endif
1378         wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
1379
1380         CGContextConcatCTM( m_cgContext, m_windowTransform );
1381                 CGContextSaveGState( m_cgContext );
1382                 m_releaseContext = true;
1383                 if ( !HIShapeIsEmpty(m_clipRgn) )
1384                 {
1385             // the clip region is in device coordinates, so we convert this again to user coordinates
1386             wxMacCFRefHolder<HIMutableShapeRef> hishape ;
1387             hishape.Set( HIShapeCreateMutableCopy( m_clipRgn ) );
1388             CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1389             HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1390                         HIShapeReplacePathInCGContext( hishape, m_cgContext );
1391                         CGContextClip( m_cgContext );
1392                 }
1393                 CGContextSaveGState( m_cgContext );
1394         }
1395 }
1396
1397 // TODO test whether the private CGContextSetCompositeOperation works under 10.3 (using NSCompositingModes)
1398
1399 bool wxMacCoreGraphicsContext::SetLogicalFunction( int function )
1400 {
1401     if (m_logicalFunction == function)
1402         return true;
1403
1404     EnsureIsValid();
1405
1406     bool retval = false;
1407
1408     if ( function == wxCOPY )
1409     {
1410         retval = true;
1411         CGContextSetBlendMode( m_cgContext, kCGBlendModeNormal );
1412     }
1413     else if ( function == wxINVERT || function == wxXOR )
1414     {
1415         // change color to white
1416         CGContextSetBlendMode( m_cgContext, kCGBlendModeExclusion );
1417         CGContextSetShouldAntialias( m_cgContext, false );
1418         retval = true;
1419     }
1420
1421     if (retval)
1422         m_logicalFunction = function;
1423     return retval ;
1424 }
1425
1426 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1427 {
1428     if( m_cgContext )
1429     {
1430         HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
1431         HIShapeReplacePathInCGContext( shape, m_cgContext );
1432         CGContextClip( m_cgContext );
1433         CFRelease( shape );
1434     }
1435     else
1436     {
1437         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1438         // to regions we try at least to have correct translations
1439         wxMacCFRefHolder<HIShapeRef> hishape ;
1440         hishape.Set( HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() ));
1441         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( hishape );
1442
1443         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1444         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1445         m_clipRgn.Set(mutableShape);
1446     }
1447 }
1448
1449 // clips drawings to the rect
1450 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1451 {
1452     HIRect r = CGRectMake( x , y , w , h );
1453     if ( m_cgContext )
1454     {
1455         CGContextClipToRect( m_cgContext, r );
1456     }
1457     else
1458     {
1459         // the clipping itself must be stored as device coordinates, otherwise
1460         // we cannot apply it back correctly
1461         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1462         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1463     }
1464 }
1465
1466     // resets the clipping to original extent
1467 void wxMacCoreGraphicsContext::ResetClip()
1468 {
1469     if ( m_cgContext )
1470     {
1471         // there is no way for clearing the clip, we can only revert to the stored
1472         // state, but then we have to make sure everything else is NOT restored
1473         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1474         CGContextRestoreGState( m_cgContext );
1475         CGContextSaveGState( m_cgContext );
1476         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1477         transformNew = CGAffineTransformInvert( transformNew ) ;
1478         CGContextConcatCTM( m_cgContext, transformNew);
1479         CGContextConcatCTM( m_cgContext, transform);
1480     }
1481     else
1482     {
1483         HIRect r = CGRectMake(0,0,0,0);
1484         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1485     }
1486 }
1487
1488 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1489 {
1490     if ( m_pen.IsNull() )
1491         return ;
1492
1493     EnsureIsValid();
1494
1495     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1496
1497     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1498     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1499     CGContextStrokePath( m_cgContext );
1500 }
1501
1502 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , int fillStyle )
1503 {
1504     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1505     {
1506         // when using shading, we cannot draw pen and brush at the same time
1507         // revert to the base implementation of first filling and then stroking
1508         wxGraphicsContext::DrawPath( path, fillStyle );
1509         return;
1510     }
1511
1512     CGPathDrawingMode mode = kCGPathFill ;
1513     if ( m_brush.IsNull() )
1514     {
1515         if ( m_pen.IsNull() )
1516             return;
1517         else
1518             mode = kCGPathStroke;
1519     }
1520     else
1521     {
1522         if ( m_pen.IsNull() )
1523         {
1524             if ( fillStyle == wxODDEVEN_RULE )
1525                 mode = kCGPathEOFill;
1526             else
1527                 mode = kCGPathFill;
1528         }
1529         else
1530         {
1531             if ( fillStyle == wxODDEVEN_RULE )
1532                 mode = kCGPathEOFillStroke;
1533             else
1534                 mode = kCGPathFillStroke;
1535         }
1536     }
1537
1538     EnsureIsValid();
1539
1540     if ( !m_brush.IsNull() )
1541         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1542     if ( !m_pen.IsNull() )
1543         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1544
1545     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1546
1547     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1548     CGContextDrawPath( m_cgContext , mode );
1549 }
1550
1551 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , int fillStyle )
1552 {
1553     if ( m_brush.IsNull() )
1554         return;
1555
1556     EnsureIsValid();
1557
1558     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1559     {
1560         CGContextSaveGState( m_cgContext );
1561         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1562         CGContextClip( m_cgContext );
1563         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1564         CGContextRestoreGState( m_cgContext);
1565     }
1566     else
1567     {
1568         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1569         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1570         if ( fillStyle == wxODDEVEN_RULE )
1571             CGContextEOFillPath( m_cgContext );
1572         else
1573             CGContextFillPath( m_cgContext );
1574     }
1575 }
1576
1577 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1578 {
1579     // we allow either setting or clearing but not replacing
1580     wxASSERT( m_cgContext == NULL || cg == NULL );
1581
1582     if ( m_cgContext )
1583     {
1584         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1585         CGContextRestoreGState( m_cgContext );
1586         CGContextRestoreGState( m_cgContext );
1587         if ( m_releaseContext )
1588         {
1589 #ifndef __LP64__
1590             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1591 #endif
1592         }
1593         else
1594             CGContextRelease(m_cgContext);
1595     }
1596
1597
1598     m_cgContext = cg;
1599
1600     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1601     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1602     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1603     // for this one operation.
1604
1605     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1606     // can be removed.
1607     if (m_cgContext)
1608     {
1609         CGContextRetain(m_cgContext);
1610         CGContextSaveGState( m_cgContext );
1611         CGContextSaveGState( m_cgContext );
1612         m_releaseContext = false;
1613     }
1614 }
1615
1616 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1617 {
1618     if ( m_cgContext )
1619         CGContextTranslateCTM( m_cgContext, dx, dy );
1620     else
1621         m_windowTransform = CGAffineTransformTranslate(m_windowTransform,dx,dy);
1622 }
1623
1624 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1625 {
1626     if ( m_cgContext )
1627         CGContextScaleCTM( m_cgContext , xScale , yScale );
1628     else
1629         m_windowTransform = CGAffineTransformScale(m_windowTransform,xScale,yScale);
1630 }
1631
1632 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1633 {
1634     if ( m_cgContext )
1635         CGContextRotateCTM( m_cgContext , angle );
1636     else
1637         m_windowTransform = CGAffineTransformRotate(m_windowTransform,angle);
1638 }
1639
1640 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1641 {
1642     EnsureIsValid();
1643
1644     CGImageRef image = (CGImageRef)( bmp.CGImageCreate() );
1645     HIRect r = CGRectMake( x , y , w , h );
1646     if ( bmp.GetDepth() == 1 )
1647     {
1648         // is is a mask, the '1' in the mask tell where to draw the current brush
1649         if (  !m_brush.IsNull() )
1650         {
1651             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1652             {
1653                 // TODO clip to mask
1654             /*
1655                 CGContextSaveGState( m_cgContext );
1656                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1657                 CGContextClip( m_cgContext );
1658                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1659                 CGContextRestoreGState( m_cgContext);
1660             */
1661             }
1662             else
1663             {
1664                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1665                 wxMacDrawCGImage( m_cgContext , &r , image );
1666             }
1667         }
1668     }
1669     else
1670     {
1671         wxMacDrawCGImage( m_cgContext , &r , image );
1672     }
1673     CGImageRelease( image );
1674 }
1675
1676 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1677 {
1678     EnsureIsValid();
1679
1680     CGRect r = CGRectMake( 00 , 00 , w , h );
1681     CGContextSaveGState( m_cgContext );
1682     CGContextTranslateCTM( m_cgContext, x , y + h );
1683     CGContextScaleCTM( m_cgContext, 1, -1 );
1684     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1685         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1686     CGContextRestoreGState( m_cgContext );
1687 }
1688
1689 void wxMacCoreGraphicsContext::PushState()
1690 {
1691     EnsureIsValid();
1692
1693     CGContextSaveGState( m_cgContext );
1694 }
1695
1696 void wxMacCoreGraphicsContext::PopState()
1697 {
1698     EnsureIsValid();
1699
1700     CGContextRestoreGState( m_cgContext );
1701 }
1702
1703 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1704 {
1705     DrawText(str, x, y, 0.0);
1706 }
1707
1708 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1709 {
1710     if ( m_font.IsNull() )
1711         return;
1712
1713     EnsureIsValid();
1714
1715     OSStatus status = noErr;
1716     ATSUTextLayout atsuLayout;
1717     UniCharCount chars = str.length();
1718     UniChar* ubuf = NULL;
1719
1720 #if SIZEOF_WCHAR_T == 4
1721     wxMBConvUTF16 converter;
1722 #if wxUSE_UNICODE
1723     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1724     ubuf = (UniChar*) malloc( unicharlen + 2 );
1725     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1726 #else
1727     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1728     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1729     ubuf = (UniChar*) malloc( unicharlen + 2 );
1730     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1731 #endif
1732     chars = unicharlen / 2;
1733 #else
1734 #if wxUSE_UNICODE
1735     ubuf = (UniChar*) str.wc_str();
1736 #else
1737     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1738     chars = wxWcslen( wchar.data() );
1739     ubuf = (UniChar*) wchar.data();
1740 #endif
1741 #endif
1742
1743     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1744     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1745         &chars , &style , &atsuLayout );
1746
1747     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
1748
1749     status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1750     wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1751
1752     int iAngle = int( angle * RAD2DEG );
1753     if ( abs(iAngle) > 0 )
1754     {
1755         Fixed atsuAngle = IntToFixed( iAngle );
1756         ATSUAttributeTag atsuTags[] =
1757         {
1758             kATSULineRotationTag ,
1759         };
1760         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1761         {
1762             sizeof( Fixed ) ,
1763         };
1764         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1765         {
1766             &atsuAngle ,
1767         };
1768         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1769             atsuTags, atsuSizes, atsuValues );
1770     }
1771
1772     {
1773         ATSUAttributeTag atsuTags[] =
1774         {
1775             kATSUCGContextTag ,
1776         };
1777         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1778         {
1779             sizeof( CGContextRef ) ,
1780         };
1781         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1782         {
1783             &m_cgContext ,
1784         };
1785         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1786             atsuTags, atsuSizes, atsuValues );
1787     }
1788
1789     ATSUTextMeasurement textBefore, textAfter;
1790     ATSUTextMeasurement ascent, descent;
1791
1792     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1793         &textBefore , &textAfter, &ascent , &descent );
1794
1795     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1796
1797     Rect rect;
1798     x += (int)(sin(angle) * FixedToInt(ascent));
1799     y += (int)(cos(angle) * FixedToInt(ascent));
1800
1801     status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1802         IntToFixed(x) , IntToFixed(y) , &rect );
1803     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1804
1805     CGContextSaveGState(m_cgContext);
1806     CGContextTranslateCTM(m_cgContext, x, y);
1807     CGContextScaleCTM(m_cgContext, 1, -1);
1808     status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1809         IntToFixed(0) , IntToFixed(0) );
1810
1811     wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
1812
1813     CGContextRestoreGState(m_cgContext);
1814
1815     ::ATSUDisposeTextLayout(atsuLayout);
1816
1817 #if SIZEOF_WCHAR_T == 4
1818     free( ubuf );
1819 #endif
1820 }
1821
1822 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1823                             wxDouble *descent, wxDouble *externalLeading ) const
1824 {
1825     wxCHECK_RET( !m_font.IsNull(), wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
1826
1827     if ( width )
1828         *width = 0;
1829     if ( height )
1830         *height = 0;
1831     if ( descent )
1832         *descent = 0;
1833     if ( externalLeading )
1834         *externalLeading = 0;
1835
1836     if (str.empty())
1837         return;
1838
1839     OSStatus status = noErr;
1840
1841     ATSUTextLayout atsuLayout;
1842     UniCharCount chars = str.length();
1843     UniChar* ubuf = NULL;
1844
1845 #if SIZEOF_WCHAR_T == 4
1846     wxMBConvUTF16 converter;
1847 #if wxUSE_UNICODE
1848     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1849     ubuf = (UniChar*) malloc( unicharlen + 2 );
1850     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1851 #else
1852     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1853     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1854     ubuf = (UniChar*) malloc( unicharlen + 2 );
1855     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1856 #endif
1857     chars = unicharlen / 2;
1858 #else
1859 #if wxUSE_UNICODE
1860     ubuf = (UniChar*) str.wc_str();
1861 #else
1862     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1863     chars = wxWcslen( wchar.data() );
1864     ubuf = (UniChar*) wchar.data();
1865 #endif
1866 #endif
1867
1868     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1869     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1870         &chars , &style , &atsuLayout );
1871
1872     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
1873
1874     ATSUTextMeasurement textBefore, textAfter;
1875     ATSUTextMeasurement textAscent, textDescent;
1876
1877     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1878         &textBefore , &textAfter, &textAscent , &textDescent );
1879
1880     if ( height )
1881         *height = FixedToInt(textAscent + textDescent);
1882     if ( descent )
1883         *descent = FixedToInt(textDescent);
1884     if ( externalLeading )
1885         *externalLeading = 0;
1886     if ( width )
1887         *width = FixedToInt(textAfter - textBefore);
1888
1889     ::ATSUDisposeTextLayout(atsuLayout);
1890 #if SIZEOF_WCHAR_T == 4
1891     free( ubuf ) ;
1892 #endif
1893 }
1894
1895 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1896 {
1897     widths.Empty();
1898     widths.Add(0, text.length());
1899
1900     if (text.empty())
1901         return;
1902
1903     ATSUTextLayout atsuLayout;
1904     UniCharCount chars = text.length();
1905     UniChar* ubuf = NULL;
1906
1907 #if SIZEOF_WCHAR_T == 4
1908     wxMBConvUTF16 converter;
1909 #if wxUSE_UNICODE
1910     size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
1911     ubuf = (UniChar*) malloc( unicharlen + 2 );
1912     converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );
1913 #else
1914     const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1915     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1916     ubuf = (UniChar*) malloc( unicharlen + 2 );
1917     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1918 #endif
1919     chars = unicharlen / 2;
1920 #else
1921 #if wxUSE_UNICODE
1922     ubuf = (UniChar*) text.wc_str();
1923 #else
1924     wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1925     chars = wxWcslen( wchar.data() );
1926     ubuf = (UniChar*) wchar.data();
1927 #endif
1928 #endif
1929
1930     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1931     ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1932         &chars , &style , &atsuLayout );
1933
1934     for ( int pos = 0; pos < (int)chars; pos ++ )
1935     {
1936         unsigned long actualNumberOfBounds = 0;
1937         ATSTrapezoid glyphBounds;
1938
1939         // We get a single bound, since the text should only require one. If it requires more, there is an issue
1940         OSStatus result;
1941         result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
1942             kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
1943         if (result != noErr || actualNumberOfBounds != 1 )
1944             return;
1945
1946         widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
1947         //unsigned char uch = s[i];
1948     }
1949
1950     ::ATSUDisposeTextLayout(atsuLayout);
1951 #if SIZEOF_WCHAR_T == 4
1952     free( ubuf ) ;
1953 #endif
1954 }
1955
1956 void * wxMacCoreGraphicsContext::GetNativeContext()
1957 {
1958     return m_cgContext;
1959 }
1960
1961 // concatenates this transform with the current transform of this context
1962 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1963 {
1964     if ( m_cgContext )
1965         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1966     else
1967         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
1968 }
1969
1970 // sets the transform of this context
1971 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
1972 {
1973     if ( m_cgContext )
1974     {
1975         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1976         transform = CGAffineTransformInvert( transform ) ;
1977         CGContextConcatCTM( m_cgContext, transform);
1978         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1979     }
1980     else
1981     {
1982         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
1983     }
1984 }
1985
1986 // gets the matrix of this context
1987 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
1988 {
1989     wxGraphicsMatrix m = CreateMatrix();
1990     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
1991         CGContextGetCTM( m_cgContext ));
1992     return m;
1993 }
1994
1995 //
1996 // Renderer
1997 //
1998
1999 //-----------------------------------------------------------------------------
2000 // wxMacCoreGraphicsRenderer declaration
2001 //-----------------------------------------------------------------------------
2002
2003 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2004 {
2005 public :
2006     wxMacCoreGraphicsRenderer() {}
2007
2008     virtual ~wxMacCoreGraphicsRenderer() {}
2009
2010     // Context
2011
2012     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2013
2014     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2015
2016     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2017
2018     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2019
2020     virtual wxGraphicsContext * CreateMeasuringContext();
2021
2022     // Path
2023
2024     virtual wxGraphicsPath CreatePath();
2025
2026     // Matrix
2027
2028     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2029         wxDouble tx=0.0, wxDouble ty=0.0);
2030
2031
2032     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2033
2034     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2035
2036     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2037     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2038         const wxColour&c1, const wxColour&c2) ;
2039
2040     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2041     // with radius r and color cColor
2042     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2043         const wxColour &oColor, const wxColour &cColor) ;
2044
2045    // sets the font
2046     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2047
2048 private :
2049     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2050 } ;
2051
2052 //-----------------------------------------------------------------------------
2053 // wxMacCoreGraphicsRenderer implementation
2054 //-----------------------------------------------------------------------------
2055
2056 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2057
2058 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2059
2060 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2061 {
2062     return &gs_MacCoreGraphicsRenderer;
2063 }
2064
2065 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc)
2066 {
2067     wxMemoryDC* mdc = wxDynamicCast(&dc, wxMemoryDC);
2068     if ( mdc )
2069     {
2070         return new wxMacCoreGraphicsContext(this,
2071             (CGContextRef)mdc->GetGraphicsContext()->GetNativeContext());
2072     }
2073     else
2074     {
2075         return new wxMacCoreGraphicsContext(this,(CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
2076     }
2077 }
2078
2079 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2080 {
2081     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2082 }
2083
2084
2085 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2086 {
2087     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
2088 }
2089
2090 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2091 {
2092     return new wxMacCoreGraphicsContext(this, window );
2093 }
2094
2095 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2096 {
2097     return new wxMacCoreGraphicsContext(this);
2098 }
2099
2100 // Path
2101
2102 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2103 {
2104     wxGraphicsPath m;
2105     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2106     return m;
2107 }
2108
2109
2110 // Matrix
2111
2112 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2113     wxDouble tx, wxDouble ty)
2114 {
2115     wxGraphicsMatrix m;
2116     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2117     data->Set( a,b,c,d,tx,ty ) ;
2118     m.SetRefData(data);
2119     return m;
2120 }
2121
2122 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2123 {
2124     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
2125         return wxNullGraphicsPen;
2126     else
2127     {
2128         wxGraphicsPen p;
2129         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2130         return p;
2131     }
2132 }
2133
2134 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2135 {
2136     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2137         return wxNullGraphicsBrush;
2138     else
2139     {
2140         wxGraphicsBrush p;
2141         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2142         return p;
2143     }
2144 }
2145
2146 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2147 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2148     const wxColour&c1, const wxColour&c2)
2149 {
2150     wxGraphicsBrush p;
2151     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2152     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
2153     p.SetRefData(d);
2154     return p;
2155 }
2156
2157 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2158 // with radius r and color cColor
2159 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2160     const wxColour &oColor, const wxColour &cColor)
2161 {
2162     wxGraphicsBrush p;
2163     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2164     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2165     p.SetRefData(d);
2166     return p;
2167 }
2168
2169 // sets the font
2170 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2171 {
2172     if ( font.Ok() )
2173     {
2174         wxGraphicsFont p;
2175         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2176         return p;
2177     }
2178     else
2179         return wxNullGraphicsFont;
2180 }
2181