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 #if wxUSE_GRAPHICS_CONTEXT && wxMAC_USE_CORE_GRAPHICS
  15
  16 #include "wx/graphics.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/dcclient.h"
  20     #include "wx/log.h"
  21     #include "wx/region.h"
  22 #endif
  23
  24 #include "wx/mac/uma.h"
  25
  26 #ifdef __MSL__
  27     #if __MSL__ >= 0x6000
  28         #include "math.h"
  29         // in case our functions were defined outside std, we make it known all the same
  30         namespace std { }
  31         using namespace std;
  32     #endif
  33 #endif
  34
  35 #include "wx/mac/private.h"
  36
  37 #if MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_4
  38 typedef float CGFloat;
  39 #endif
  40
  41 //-----------------------------------------------------------------------------
  42 // constants
  43 //-----------------------------------------------------------------------------
  44
  45 #if !defined( __DARWIN__ ) || defined(__MWERKS__)
  46 #ifndef M_PI
  47 const double M_PI = 3.14159265358979;
  48 #endif
  49 #endif
  50
  51 static const double RAD2DEG = 180.0 / M_PI;
  52
  53 //
  54 // Pen, Brushes and Fonts
  55 //
  56
  57 #pragma mark -
  58 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
  59
  60 // CGPattern wrapper class: always allocate on heap, never call destructor
  61
  62 class wxMacCoreGraphicsPattern
  63 {
  64 public :
  65     wxMacCoreGraphicsPattern() {}
  66
  67     // is guaranteed to be called only with a non-Null CGContextRef
  68     virtual void Render( CGContextRef ctxRef ) = 0;
  69
  70     operator CGPatternRef() const { return m_patternRef; }
  71
  72 protected :
  73     virtual ~wxMacCoreGraphicsPattern()
  74     {
  75         // as this is called only when the m_patternRef is been released;
  76         // don't release it again
  77     }
  78
  79     static void _Render( void *info, CGContextRef ctxRef )
  80     {
  81         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
  82         if ( self && ctxRef )
  83             self->Render( ctxRef );
  84     }
  85
  86     static void _Dispose( void *info )
  87     {
  88         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
  89         delete self;
  90     }
  91
  92     CGPatternRef m_patternRef;
  93
  94     static const CGPatternCallbacks ms_Callbacks;
  95 };
  96
  97 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
  98
  99 class ImagePattern : public wxMacCoreGraphicsPattern
 100 {
 101 public :
 102     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 103     {
 104         wxASSERT( bmp && bmp->Ok() );
 105
 106         Init( (CGImageRef) bmp->CGImageCreate() , transform );
 107     }
 108
 109     // ImagePattern takes ownership of CGImageRef passed in
 110     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 111     {
 112         if ( image )
 113             CFRetain( image );
 114
 115         Init( image , transform );
 116     }
 117
 118     virtual void Render( CGContextRef ctxRef )
 119     {
 120         if (m_image != NULL)
 121             HIViewDrawCGImage( ctxRef, &m_imageBounds, m_image );
 122     }
 123
 124 protected :
 125     void Init( CGImageRef image, const CGAffineTransform& transform )
 126     {
 127         m_image = image;
 128         if ( m_image )
 129         {
 130             m_imageBounds = CGRectMake( 0.0, 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 131             m_patternRef = CGPatternCreate(
 132                 this , m_imageBounds, transform ,
 133                 m_imageBounds.size.width, m_imageBounds.size.height,
 134                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 135         }
 136     }
 137
 138     virtual ~ImagePattern()
 139     {
 140         if ( m_image )
 141             CGImageRelease( m_image );
 142     }
 143
 144     CGImageRef m_image;
 145     CGRect m_imageBounds;
 146 };
 147
 148 class HatchPattern : public wxMacCoreGraphicsPattern
 149 {
 150 public :
 151     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 152     {
 153         m_hatch = hatchstyle;
 154         m_imageBounds = CGRectMake( 0.0, 0.0, 8.0 , 8.0 );
 155         m_patternRef = CGPatternCreate(
 156             this , m_imageBounds, transform ,
 157             m_imageBounds.size.width, m_imageBounds.size.height,
 158             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 159     }
 160
 161     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 162     {
 163 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
 164         if ( UMAGetSystemVersion() >= 0x1040 )
 165         {
 166             CGContextStrokeLineSegments( ctxRef , pts , count );
 167         }
 168         else
 169 #endif
 170         {
 171             CGContextBeginPath( ctxRef );
 172             for (size_t i = 0; i < count; i += 2)
 173             {
 174                 CGContextMoveToPoint(ctxRef, pts[i].x, pts[i].y);
 175                 CGContextAddLineToPoint(ctxRef, pts[i+1].x, pts[i+1].y);
 176             }
 177             CGContextStrokePath(ctxRef);
 178         }
 179     }
 180
 181     virtual void Render( CGContextRef ctxRef )
 182     {
 183         switch ( m_hatch )
 184         {
 185             case wxBDIAGONAL_HATCH :
 186                 {
 187                     CGPoint pts[] =
 188                     {
 189                     { 8.0 , 0.0 } , { 0.0 , 8.0 }
 190                     };
 191                     StrokeLineSegments( ctxRef , pts , 2 );
 192                 }
 193                 break;
 194
 195             case wxCROSSDIAG_HATCH :
 196                 {
 197                     CGPoint pts[] =
 198                     {
 199                         { 0.0 , 0.0 } , { 8.0 , 8.0 } ,
 200                         { 8.0 , 0.0 } , { 0.0 , 8.0 }
 201                     };
 202                     StrokeLineSegments( ctxRef , pts , 4 );
 203                 }
 204                 break;
 205
 206             case wxFDIAGONAL_HATCH :
 207                 {
 208                     CGPoint pts[] =
 209                     {
 210                     { 0.0 , 0.0 } , { 8.0 , 8.0 }
 211                     };
 212                     StrokeLineSegments( ctxRef , pts , 2 );
 213                 }
 214                 break;
 215
 216             case wxCROSS_HATCH :
 217                 {
 218                     CGPoint pts[] =
 219                     {
 220                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 221                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 222                     };
 223                     StrokeLineSegments( ctxRef , pts , 4 );
 224                 }
 225                 break;
 226
 227             case wxHORIZONTAL_HATCH :
 228                 {
 229                     CGPoint pts[] =
 230                     {
 231                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 232                     };
 233                     StrokeLineSegments( ctxRef , pts , 2 );
 234                 }
 235                 break;
 236
 237             case wxVERTICAL_HATCH :
 238                 {
 239                     CGPoint pts[] =
 240                     {
 241                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 242                     };
 243                     StrokeLineSegments( ctxRef , pts , 2 );
 244                 }
 245                 break;
 246
 247             default:
 248                 break;
 249         }
 250     }
 251
 252 protected :
 253     virtual ~HatchPattern() {}
 254
 255     CGRect      m_imageBounds;
 256     int         m_hatch;
 257 };
 258
 259 class wxMacCoreGraphicsPen : public wxGraphicsPen
 260 {
 261 public:
 262     wxMacCoreGraphicsPen();
 263     wxMacCoreGraphicsPen( wxGraphicsRenderer* renderer, const wxPen &pen );
 264     ~wxMacCoreGraphicsPen();
 265
 266     void Init();
 267     virtual void Apply( wxGraphicsContext* context );
 268     virtual wxDouble GetWidth() { return m_width; }
 269
 270 protected :
 271     CGLineCap m_cap;
 272     wxMacCFRefHolder<CGColorRef> m_color;
 273     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 274
 275     CGLineJoin m_join;
 276     CGFloat m_width;
 277
 278     int m_count;
 279     const CGFloat *m_lengths;
 280     CGFloat *m_userLengths;
 281
 282
 283     bool m_isPattern;
 284     wxMacCFRefHolder<CGPatternRef> m_pattern;
 285     CGFloat* m_patternColorComponents;
 286 private :
 287 DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsPen)
 288 };
 289
 290 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsPen,wxGraphicsPen)
 291
 292 wxMacCoreGraphicsPen::wxMacCoreGraphicsPen() : wxGraphicsPen( NULL )
 293 {
 294     wxLogDebug(wxT("Illegal Constructor called"));
 295 }
 296
 297 wxMacCoreGraphicsPen::wxMacCoreGraphicsPen( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 298     wxGraphicsPen( renderer )
 299 {
 300     Init();
 301
 302     float components[4] = { pen.GetColour().Red() / 255.0 , pen.GetColour().Green() / 255.0 ,
 303             pen.GetColour().Blue() / 255.0 , pen.GetColour().Alpha() / 255.0 } ;
 304     m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 305
 306     // TODO: * m_dc->m_scaleX
 307     m_width = pen.GetWidth();
 308     if (m_width <= 0.0)
 309         m_width = 0.1;
 310
 311     switch ( pen.GetCap() )
 312     {
 313         case wxCAP_ROUND :
 314             m_cap = kCGLineCapRound;
 315             break;
 316
 317         case wxCAP_PROJECTING :
 318             m_cap = kCGLineCapSquare;
 319             break;
 320
 321         case wxCAP_BUTT :
 322             m_cap = kCGLineCapButt;
 323             break;
 324
 325         default :
 326             m_cap = kCGLineCapButt;
 327             break;
 328     }
 329
 330     switch ( pen.GetJoin() )
 331     {
 332         case wxJOIN_BEVEL :
 333             m_join = kCGLineJoinBevel;
 334             break;
 335
 336         case wxJOIN_MITER :
 337             m_join = kCGLineJoinMiter;
 338             break;
 339
 340         case wxJOIN_ROUND :
 341             m_join = kCGLineJoinRound;
 342             break;
 343
 344         default :
 345             m_join = kCGLineJoinMiter;
 346             break;
 347     }
 348
 349     const CGFloat dashUnit = m_width < 1.0 ? 1.0 : m_width;
 350
 351     const CGFloat dotted[] = { dashUnit , dashUnit + 2.0 };
 352     static const CGFloat short_dashed[] = { 9.0 , 6.0 };
 353     static const CGFloat dashed[] = { 19.0 , 9.0 };
 354     static const CGFloat dotted_dashed[] = { 9.0 , 6.0 , 3.0 , 3.0 };
 355
 356     switch ( pen.GetStyle() )
 357     {
 358         case wxSOLID :
 359             break;
 360
 361         case wxDOT :
 362             m_count = WXSIZEOF(dotted);
 363             m_userLengths = new CGFloat[ m_count ] ;
 364             memcpy( m_userLengths, dotted, sizeof(dotted) );
 365             m_lengths = m_userLengths;
 366             break;
 367
 368         case wxLONG_DASH :
 369             m_count = WXSIZEOF(dashed);
 370             m_lengths = dashed;
 371             break;
 372
 373         case wxSHORT_DASH :
 374             m_count = WXSIZEOF(short_dashed);
 375             m_lengths = short_dashed;
 376             break;
 377
 378         case wxDOT_DASH :
 379             m_count = WXSIZEOF(dotted_dashed);
 380             m_lengths = dotted_dashed;
 381             break;
 382
 383         case wxUSER_DASH :
 384             wxDash *dashes;
 385             m_count = pen.GetDashes( &dashes );
 386             if ((dashes != NULL) && (m_count > 0))
 387             {
 388                 m_userLengths = new CGFloat[m_count];
 389                 for ( int i = 0; i < m_count; ++i )
 390                 {
 391                     m_userLengths[i] = dashes[i] * dashUnit;
 392
 393                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 394                         m_userLengths[i] = dashUnit + 2.0;
 395                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 396                         m_userLengths[i] = dashUnit;
 397                 }
 398             }
 399             m_lengths = m_userLengths;
 400             break;
 401
 402         case wxSTIPPLE :
 403             {
 404                 wxBitmap* bmp = pen.GetStipple();
 405                 if ( bmp && bmp->Ok() )
 406                 {
 407                     m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 408                     m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeTranslation( 0,0 ) ) ) );
 409                     m_patternColorComponents = new CGFloat[1] ;
 410                     m_patternColorComponents[0] = 1.0;
 411                     m_isPattern = true;
 412                 }
 413             }
 414             break;
 415
 416         default :
 417             {
 418                 m_isPattern = true;
 419                 m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 420                 m_pattern.Set( *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeTranslation( 0,0 ) ) ) );
 421                 m_patternColorComponents = new CGFloat[4] ;
 422                 m_patternColorComponents[0] = pen.GetColour().Red() / 255.0;
 423                 m_patternColorComponents[1] = pen.GetColour().Green() / 255.0;
 424                 m_patternColorComponents[2] = pen.GetColour().Blue() / 255.0;
 425                 m_patternColorComponents[3] =  pen.GetColour().Alpha() / 255.0;
 426             }
 427             break;
 428     }
 429     if ((m_lengths != NULL) && (m_count > 0))
 430     {
 431         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 432         m_cap = kCGLineCapButt;
 433     }
 434 }
 435
 436 wxMacCoreGraphicsPen::~wxMacCoreGraphicsPen()
 437 {
 438     delete[] m_userLengths;
 439     delete[] m_patternColorComponents;
 440 }
 441
 442 void wxMacCoreGraphicsPen::Init()
 443 {
 444     m_lengths = NULL;
 445     m_userLengths = NULL;
 446     m_width = NULL;
 447     m_count = 0;
 448     m_patternColorComponents = NULL;
 449     m_isPattern = false;
 450 }
 451
 452 void wxMacCoreGraphicsPen::Apply( wxGraphicsContext* context )
 453 {
 454     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 455     CGContextSetLineWidth( cg , m_width );
 456     CGContextSetLineJoin( cg , m_join );
 457
 458     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 459     CGContextSetLineCap( cg , m_cap );
 460
 461     if ( m_isPattern )
 462     {
 463         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 464         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 465     }
 466     else
 467     {
 468         CGContextSetStrokeColorWithColor( cg , m_color );
 469     }
 470 }
 471
 472 //
 473 // Brush
 474 //
 475
 476 class wxMacCoreGraphicsBrush : public wxGraphicsBrush
 477 {
 478 public:
 479     wxMacCoreGraphicsBrush();
 480     wxMacCoreGraphicsBrush( wxGraphicsRenderer* renderer );
 481     wxMacCoreGraphicsBrush( wxGraphicsRenderer* renderer, const wxBrush &brush );
 482     ~wxMacCoreGraphicsBrush ();
 483
 484     virtual void Apply( wxGraphicsContext* context );
 485     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 486         const wxColour&c1, const wxColour&c2 );
 487     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 488     const wxColour &oColor, const wxColour &cColor );
 489
 490     virtual bool IsShading() { return m_isShading; }
 491     CGShadingRef GetShading() { return m_shading; }
 492 protected:
 493     CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
 494     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 495     virtual void Init();
 496
 497     wxMacCFRefHolder<CGColorRef> m_color;
 498     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 499
 500     bool m_isPattern;
 501     wxMacCFRefHolder<CGPatternRef> m_pattern;
 502     CGFloat* m_patternColorComponents;
 503
 504     bool m_isShading;
 505     CGFunctionRef m_gradientFunction;
 506     CGShadingRef m_shading;
 507     CGFloat *m_gradientComponents;
 508 private :
 509 DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsBrush)
 510 };
 511
 512 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsBrush,wxGraphicsBrush)
 513
 514 wxMacCoreGraphicsBrush::wxMacCoreGraphicsBrush() : wxGraphicsBrush( NULL )
 515 {
 516     wxLogDebug(wxT("Illegal Constructor called"));
 517 }
 518
 519 wxMacCoreGraphicsBrush::wxMacCoreGraphicsBrush( wxGraphicsRenderer* renderer) : wxGraphicsBrush( renderer )
 520 {
 521     Init();
 522 }
 523
 524 void wxMacCoreGraphicsBrush::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 525         const wxColour&c1, const wxColour&c2 )
 526 {
 527     m_gradientFunction = CreateGradientFunction( c1, c2 );
 528     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake(x1,y1), CGPointMake(x2,y2), m_gradientFunction, true, true ) ;
 529     m_isShading = true ;
 530 }
 531
 532 void wxMacCoreGraphicsBrush::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 533     const wxColour &oColor, const wxColour &cColor )
 534 {
 535     m_gradientFunction = CreateGradientFunction( oColor, cColor );
 536     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake(xo,yo), 0, CGPointMake(xc,yc), radius, m_gradientFunction, true, true ) ;
 537     m_isShading = true ;
 538 }
 539
 540 wxMacCoreGraphicsBrush::wxMacCoreGraphicsBrush(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsBrush( renderer )
 541 {
 542     Init();
 543
 544     if ( brush.GetStyle() == wxSOLID )
 545     {
 546         float components[4] = { brush.GetColour().Red() / 255.0 , brush.GetColour().Green() / 255.0 ,
 547                 brush.GetColour().Blue() / 255.0 , brush.GetColour().Alpha() / 255.0 } ;
 548         m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 549     }
 550     else if ( brush.IsHatch() )
 551     {
 552         m_isPattern = true;
 553         m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 554         m_pattern.Set( *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeTranslation( 0,0 ) ) ) );
 555
 556         m_patternColorComponents = new CGFloat[4] ;
 557         m_patternColorComponents[0] = brush.GetColour().Red() / 255.0;
 558         m_patternColorComponents[1] = brush.GetColour().Green() / 255.0;
 559         m_patternColorComponents[2] = brush.GetColour().Blue() / 255.0;
 560         m_patternColorComponents[3] = brush.GetColour().Alpha() / 255.0;
 561     }
 562     else
 563     {
 564         // now brush is a bitmap
 565         wxBitmap* bmp = brush.GetStipple();
 566         if ( bmp && bmp->Ok() )
 567         {
 568             m_isPattern = true;
 569             m_patternColorComponents = new CGFloat[1] ;
 570             m_patternColorComponents[0] = 1.0;
 571             m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 572             m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeTranslation( 0,0 ) ) ) );
 573         }
 574     }
 575 }
 576
 577 wxMacCoreGraphicsBrush::~wxMacCoreGraphicsBrush()
 578 {
 579     if ( m_shading )
 580         CGShadingRelease(m_shading);
 581
 582     if( m_gradientFunction )
 583         CGFunctionRelease(m_gradientFunction);
 584
 585     delete[] m_gradientComponents;
 586     delete[] m_patternColorComponents;
 587 }
 588
 589 void wxMacCoreGraphicsBrush::Init()
 590 {
 591     m_patternColorComponents = NULL;
 592     m_gradientFunction = NULL;
 593     m_shading = NULL;
 594     m_isPattern = false;
 595     m_gradientComponents = NULL;
 596     m_isShading = false;
 597 }
 598
 599 void wxMacCoreGraphicsBrush::Apply( wxGraphicsContext* context )
 600 {
 601     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 602
 603     if ( m_isShading )
 604     {
 605     }
 606     else
 607     {
 608         if ( m_isPattern )
 609         {
 610             CGContextSetFillColorSpace( cg , m_colorSpace );
 611             CGContextSetFillPattern( cg, m_pattern , m_patternColorComponents );
 612         }
 613         else
 614         {
 615             CGContextSetFillColorWithColor( cg, m_color );
 616         }
 617     }
 618 }
 619
 620 void wxMacCoreGraphicsBrush::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 621 {
 622     CGFloat* colors = (CGFloat*) info ;
 623     CGFloat f = *in;
 624     for( int i = 0 ; i < 4 ; ++i )
 625     {
 626         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 627     }
 628 }
 629
 630 CGFunctionRef wxMacCoreGraphicsBrush::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
 631 {
 632     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 633     static const CGFloat input_value_range [2] = { 0, 1 };
 634     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 635     m_gradientComponents = new CGFloat[8] ;
 636     m_gradientComponents[0] = c1.Red() / 255.0;
 637     m_gradientComponents[1] = c1.Green() / 255.0;
 638     m_gradientComponents[2] = c1.Blue() / 255.0;
 639     m_gradientComponents[3] = c1.Alpha() / 255.0;
 640     m_gradientComponents[4] = c2.Red() / 255.0;
 641     m_gradientComponents[5] = c2.Green() / 255.0;
 642     m_gradientComponents[6] = c2.Blue() / 255.0;
 643     m_gradientComponents[7] = c2.Alpha() / 255.0;
 644
 645     return CGFunctionCreate ( m_gradientComponents,  1,
 646                             input_value_range,
 647                             4,
 648                             output_value_ranges,
 649                             &callbacks);
 650 }
 651
 652 //
 653 // Font
 654 //
 655
 656 class wxMacCoreGraphicsFont : public wxGraphicsFont
 657 {
 658 public:
 659     wxMacCoreGraphicsFont();
 660     wxMacCoreGraphicsFont( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 661     ~wxMacCoreGraphicsFont();
 662
 663     virtual void Apply( wxGraphicsContext* context );
 664     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 665 private :
 666     ATSUStyle m_macATSUIStyle;
 667 DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsFont)
 668 };
 669
 670 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsFont,wxGraphicsFont)
 671
 672 wxMacCoreGraphicsFont::wxMacCoreGraphicsFont() : wxGraphicsFont( NULL )
 673 {
 674     wxLogDebug(wxT("Illegal Constructor called"));
 675 }
 676
 677 wxMacCoreGraphicsFont::wxMacCoreGraphicsFont(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsFont( renderer )
 678 {
 679     m_macATSUIStyle = NULL;
 680
 681     OSStatus status;
 682
 683     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 684
 685     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 686
 687     // we need the scale here ...
 688
 689     Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
 690     RGBColor atsuColor = MAC_WXCOLORREF( col.GetPixel() );
 691     ATSUAttributeTag atsuTags[] =
 692     {
 693             kATSUSizeTag ,
 694             kATSUColorTag ,
 695     };
 696     ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 697     {
 698             sizeof( Fixed ) ,
 699             sizeof( RGBColor ) ,
 700     };
 701     ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 702     {
 703             &atsuSize ,
 704             &atsuColor ,
 705     };
 706
 707     status = ::ATSUSetAttributes(
 708         m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
 709         atsuTags, atsuSizes, atsuValues);
 710
 711     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 712 }
 713
 714 wxMacCoreGraphicsFont::~wxMacCoreGraphicsFont()
 715 {
 716     if ( m_macATSUIStyle )
 717     {
 718         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 719         m_macATSUIStyle = NULL;
 720     }
 721 }
 722
 723 void wxMacCoreGraphicsFont::Apply( wxGraphicsContext* WXUNUSED(context) )
 724 {
 725     // nothing to do here
 726 }
 727
 728 //
 729 // Graphics Matrix
 730 //
 731
 732 //-----------------------------------------------------------------------------
 733 // wxMacCoreGraphicsMatrix declaration
 734 //-----------------------------------------------------------------------------
 735
 736 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrix : public wxGraphicsMatrix
 737 {
 738 public :
 739     wxMacCoreGraphicsMatrix() ;
 740
 741         wxMacCoreGraphicsMatrix(wxGraphicsRenderer* renderer, wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 742                 wxDouble tx=0.0, wxDouble ty=0.0) ;
 743
 744         virtual ~wxMacCoreGraphicsMatrix() ;
 745
 746     virtual wxGraphicsMatrix *Clone() const ;
 747
 748         // concatenates the matrix
 749         virtual void Concat( const wxGraphicsMatrix *t );
 750
 751         // copies the passed in matrix
 752         virtual void Copy( const wxGraphicsMatrix *t );
 753
 754         // sets the matrix to the respective values
 755         virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 756                 wxDouble tx=0.0, wxDouble ty=0.0);
 757
 758         // makes this the inverse matrix
 759         virtual void Invert();
 760
 761         // returns true if the elements of the transformation matrix are equal ?
 762     virtual bool IsEqual( const wxGraphicsMatrix* t) const ;
 763
 764         // return true if this is the identity matrix
 765         virtual bool IsIdentity();
 766
 767     //
 768     // transformation
 769     //
 770
 771     // add the translation to this matrix
 772     virtual void Translate( wxDouble dx , wxDouble dy );
 773
 774     // add the scale to this matrix
 775     virtual void Scale( wxDouble xScale , wxDouble yScale );
 776
 777     // add the rotation to this matrix (radians)
 778     virtual void Rotate( wxDouble angle );
 779
 780     //
 781     // apply the transforms
 782     //
 783
 784         // applies that matrix to the point
 785         virtual void TransformPoint( wxDouble *x, wxDouble *y );
 786
 787         // applies the matrix except for translations
 788         virtual void TransformDistance( wxDouble *dx, wxDouble *dy );
 789
 790         // returns the native representation
 791         virtual void * GetNativeMatrix() const;
 792
 793 private :
 794     CGAffineTransform m_matrix;
 795
 796     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsMatrix)
 797 } ;
 798
 799 //-----------------------------------------------------------------------------
 800 // wxMacCoreGraphicsMatrix implementation
 801 //-----------------------------------------------------------------------------
 802
 803 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsMatrix, wxGraphicsMatrix)
 804
 805 wxMacCoreGraphicsMatrix::wxMacCoreGraphicsMatrix() : wxGraphicsMatrix(NULL)
 806 {
 807     wxLogDebug(wxT("Illegal Constructor called"));
 808 }
 809
 810 wxMacCoreGraphicsMatrix::wxMacCoreGraphicsMatrix(wxGraphicsRenderer* renderer, wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 811     wxDouble tx, wxDouble ty) : wxGraphicsMatrix(renderer)
 812 {
 813     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 814 }
 815
 816 wxMacCoreGraphicsMatrix::~wxMacCoreGraphicsMatrix()
 817 {
 818 }
 819
 820 wxGraphicsMatrix *wxMacCoreGraphicsMatrix::Clone() const
 821 {
 822     wxMacCoreGraphicsMatrix* m = new wxMacCoreGraphicsMatrix(GetRenderer()) ;
 823     m->m_matrix = m_matrix ;
 824     return m;
 825 }
 826
 827 // concatenates the matrix
 828 void wxMacCoreGraphicsMatrix::Concat( const wxGraphicsMatrix *t )
 829 {
 830     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 831 }
 832
 833 // copies the passed in matrix
 834 void wxMacCoreGraphicsMatrix::Copy( const wxGraphicsMatrix *t )
 835 {
 836     m_matrix = *((CGAffineTransform*) t->GetNativeMatrix());
 837 }
 838
 839 // sets the matrix to the respective values
 840 void wxMacCoreGraphicsMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 841     wxDouble tx, wxDouble ty)
 842 {
 843     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 844 }
 845
 846 // makes this the inverse matrix
 847 void wxMacCoreGraphicsMatrix::Invert()
 848 {
 849     m_matrix = CGAffineTransformInvert( m_matrix );
 850 }
 851
 852 // returns true if the elements of the transformation matrix are equal ?
 853 bool wxMacCoreGraphicsMatrix::IsEqual( const wxGraphicsMatrix* t) const
 854 {
 855     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 856 }
 857
 858 // return true if this is the identity matrix
 859 bool wxMacCoreGraphicsMatrix::IsIdentity()
 860 {
 861     return CGAffineTransformIsIdentity(m_matrix);
 862 }
 863
 864 //
 865 // transformation
 866 //
 867
 868 // add the translation to this matrix
 869 void wxMacCoreGraphicsMatrix::Translate( wxDouble dx , wxDouble dy )
 870 {
 871     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
 872 }
 873
 874 // add the scale to this matrix
 875 void wxMacCoreGraphicsMatrix::Scale( wxDouble xScale , wxDouble yScale )
 876 {
 877     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
 878 }
 879
 880 // add the rotation to this matrix (radians)
 881 void wxMacCoreGraphicsMatrix::Rotate( wxDouble angle )
 882 {
 883     m_matrix = CGAffineTransformRotate( m_matrix, angle);
 884 }
 885
 886 //
 887 // apply the transforms
 888 //
 889
 890 // applies that matrix to the point
 891 void wxMacCoreGraphicsMatrix::TransformPoint( wxDouble *x, wxDouble *y )
 892 {
 893     wxDouble x1, y1 ;
 894
 895     x1 = m_matrix.a * (*x) + m_matrix.c * (*y) + m_matrix.tx ;
 896     y1 = m_matrix.b * (*x) + m_matrix.d * (*y) + m_matrix.ty ;
 897
 898     *x = x1;
 899     *y = y1;
 900 }
 901
 902 // applies the matrix except for translations
 903 void wxMacCoreGraphicsMatrix::TransformDistance( wxDouble *dx, wxDouble *dy )
 904 {
 905     wxDouble x1, y1 ;
 906
 907     x1 = m_matrix.a * (*dx) + m_matrix.c * (*dy);
 908     y1 = m_matrix.b * (*dx) + m_matrix.d * (*dy);
 909
 910     *dx = x1;
 911     *dy = y1;
 912 }
 913
 914 // returns the native representation
 915 void * wxMacCoreGraphicsMatrix::GetNativeMatrix() const
 916 {
 917     return (void*) &m_matrix;
 918 }
 919
 920 //
 921 // Graphics Path
 922 //
 923
 924 //-----------------------------------------------------------------------------
 925 // wxMacCoreGraphicsPath declaration
 926 //-----------------------------------------------------------------------------
 927
 928 class WXDLLEXPORT wxMacCoreGraphicsPath : public wxGraphicsPath
 929 {
 930 public :
 931     wxMacCoreGraphicsPath( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
 932
 933     wxMacCoreGraphicsPath();
 934
 935     ~wxMacCoreGraphicsPath();
 936
 937     virtual wxGraphicsPath *Clone() const;
 938
 939     // begins a new subpath at (x,y)
 940     virtual void MoveToPoint( wxDouble x, wxDouble y );
 941
 942     // adds a straight line from the current point to (x,y)
 943     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 944
 945     // adds a cubic Bezier curve from the current point, using two control points and an end point
 946     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 947
 948     // closes the current sub-path
 949     virtual void CloseSubpath();
 950
 951     // gets the last point of the current path, (0,0) if not yet set
 952     virtual void GetCurrentPoint( wxDouble& x, wxDouble&y);
 953
 954     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 955     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
 956
 957     //
 958     // These are convenience functions which - if not available natively will be assembled
 959     // using the primitives from above
 960     //
 961
 962     // adds a quadratic Bezier curve from the current point, using a control point and an end point
 963     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
 964
 965     // appends a rectangle as a new closed subpath
 966     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 967
 968     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 969     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 970
 971     // 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)
 972     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 973
 974         // adds another path
 975         virtual void AddPath( const wxGraphicsPath* path );
 976
 977         // returns the native path
 978         virtual void * GetNativePath() const { return m_path; }
 979
 980         // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 981         virtual void UnGetNativePath(void *p) {}
 982
 983         // transforms each point of this path by the matrix
 984         virtual void Transform( wxGraphicsMatrix* matrix );
 985
 986         // gets the bounding box enclosing all points (possibly including control points)
 987         virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y);
 988
 989         virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxWINDING_RULE);
 990     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsPath)
 991 private :
 992     CGMutablePathRef m_path;
 993 };
 994
 995 //-----------------------------------------------------------------------------
 996 // wxMacCoreGraphicsPath implementation
 997 //-----------------------------------------------------------------------------
 998
 999 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsPath, wxGraphicsPath)
1000
1001 wxMacCoreGraphicsPath::wxMacCoreGraphicsPath() :  wxGraphicsPath(NULL)
1002 {
1003     wxLogDebug(wxT("Illegal Constructor called"));
1004 }
1005
1006
1007 wxMacCoreGraphicsPath::wxMacCoreGraphicsPath( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPath(renderer)
1008 {
1009         if ( path )
1010                 m_path = path;
1011         else
1012                 m_path = CGPathCreateMutable();
1013 }
1014
1015 wxMacCoreGraphicsPath::~wxMacCoreGraphicsPath()
1016 {
1017     CGPathRelease( m_path );
1018 }
1019
1020 wxGraphicsPath* wxMacCoreGraphicsPath::Clone() const
1021 {
1022         wxMacCoreGraphicsPath* clone = new wxMacCoreGraphicsPath(GetRenderer(),CGPathCreateMutableCopy(m_path));
1023         return clone ;
1024 }
1025
1026
1027 // opens (starts) a new subpath
1028 void wxMacCoreGraphicsPath::MoveToPoint( wxDouble x1 , wxDouble y1 )
1029 {
1030     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
1031 }
1032
1033 void wxMacCoreGraphicsPath::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1034 {
1035     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
1036 }
1037
1038 void wxMacCoreGraphicsPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1039 {
1040     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
1041 }
1042
1043 void wxMacCoreGraphicsPath::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1044 {
1045     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
1046 }
1047
1048 void wxMacCoreGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1049 {
1050     CGRect cgRect = { { x , y } , { w , h } };
1051     CGPathAddRect( m_path , NULL , cgRect );
1052 }
1053
1054 void wxMacCoreGraphicsPath::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1055 {
1056     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1057 }
1058
1059 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1060 void wxMacCoreGraphicsPath::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1061 {
1062     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1063     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1064 }
1065
1066 void wxMacCoreGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1067 {
1068     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1069 }
1070
1071 void wxMacCoreGraphicsPath::AddPath( const wxGraphicsPath* path )
1072 {
1073         CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1074 }
1075
1076 // closes the current subpath
1077 void wxMacCoreGraphicsPath::CloseSubpath()
1078 {
1079     CGPathCloseSubpath( m_path );
1080 }
1081
1082 // gets the last point of the current path, (0,0) if not yet set
1083 void wxMacCoreGraphicsPath::GetCurrentPoint( wxDouble& x, wxDouble&y)
1084 {
1085     CGPoint p = CGPathGetCurrentPoint( m_path );
1086     x = p.x;
1087     y = p.y;
1088 }
1089
1090 // transforms each point of this path by the matrix
1091 void wxMacCoreGraphicsPath::Transform( wxGraphicsMatrix* matrix )
1092 {
1093         CGMutablePathRef p = CGPathCreateMutable() ;
1094         CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1095         CGPathRelease( m_path );
1096         m_path = p;
1097 }
1098
1099 // gets the bounding box enclosing all points (possibly including control points)
1100 void wxMacCoreGraphicsPath::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h)
1101 {
1102         CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1103         *x = bounds.origin.x;
1104         *y = bounds.origin.y;
1105         *w = bounds.size.width;
1106         *h = bounds.size.height;
1107 }
1108
1109 bool wxMacCoreGraphicsPath::Contains( wxDouble x, wxDouble y, int fillStyle)
1110 {
1111         return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1112 }
1113
1114
1115 //
1116 // Graphics Pen
1117 //
1118
1119 //-----------------------------------------------------------------------------
1120 // wxMacCoreGraphicsPen declaration
1121 //-----------------------------------------------------------------------------
1122
1123
1124 //
1125 // Graphics Context
1126 //
1127
1128 //-----------------------------------------------------------------------------
1129 // wxMacCoreGraphicsContext declaration
1130 //-----------------------------------------------------------------------------
1131
1132 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1133 {
1134 public:
1135     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext );
1136
1137     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1138
1139     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1140
1141     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1142
1143     wxMacCoreGraphicsContext();
1144
1145     ~wxMacCoreGraphicsContext();
1146
1147         void Init();
1148
1149     // push the current state of the context, ie the transformation matrix on a stack
1150     virtual void PushState();
1151
1152     // pops a stored state from the stack
1153     virtual void PopState();
1154
1155     // clips drawings to the region
1156     virtual void Clip( const wxRegion &region );
1157
1158     // clips drawings to the rect
1159     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1160
1161     // resets the clipping to original extent
1162     virtual void ResetClip();
1163
1164     virtual void * GetNativeContext();
1165
1166     //
1167     // transformation
1168     //
1169
1170     // translate
1171     virtual void Translate( wxDouble dx , wxDouble dy );
1172
1173     // scale
1174     virtual void Scale( wxDouble xScale , wxDouble yScale );
1175
1176     // rotate (radians)
1177     virtual void Rotate( wxDouble angle );
1178
1179         // concatenates this transform with the current transform of this context
1180         virtual void ConcatTransform( const wxGraphicsMatrix* matrix );
1181
1182         // sets the transform of this context
1183         virtual void SetTransform( const wxGraphicsMatrix* matrix );
1184
1185         // gets the matrix of this context
1186         virtual void GetTransform( wxGraphicsMatrix* matrix );
1187     //
1188     // setting the paint
1189     //
1190
1191     // sets the pen
1192     virtual void SetPen( wxGraphicsPen* pen , bool release = true );
1193
1194     // sets the brush for filling
1195     virtual void SetBrush( wxGraphicsBrush* brush , bool release = true );
1196
1197     // sets the font
1198     virtual void SetFont( wxGraphicsFont* font, bool release = true );
1199
1200     // strokes along a path with the current pen
1201     virtual void StrokePath( const wxGraphicsPath *path );
1202
1203     // fills a path with the current brush
1204     virtual void FillPath( const wxGraphicsPath *path, int fillStyle = wxWINDING_RULE );
1205
1206     // draws a path by first filling and then stroking
1207     virtual void DrawPath( const wxGraphicsPath *path, int fillStyle = wxWINDING_RULE );
1208
1209     virtual bool ShouldOffset() const
1210     {
1211         int penwidth = 0 ;
1212         if ( m_pen )
1213         {
1214             penwidth = m_pen->GetWidth();
1215             if ( penwidth == 0 )
1216                 penwidth = 1;
1217         }
1218         return ( penwidth % 2 ) == 1;
1219     }
1220     //
1221     // text
1222     //
1223
1224     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1225
1226     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1227
1228     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1229         wxDouble *descent, wxDouble *externalLeading ) const;
1230
1231     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1232
1233     //
1234     // image support
1235     //
1236
1237     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1238
1239     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1240
1241     void SetNativeContext( CGContextRef cg );
1242
1243     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1244     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1245
1246 private:
1247     void EnsureIsValid();
1248
1249     CGContextRef m_cgContext;
1250         WindowRef m_windowRef;
1251         int m_originX;
1252         int m_originY;
1253         wxMacCFRefHolder<HIShapeRef> m_clipRgn;
1254         bool m_releaseContext;
1255 };
1256
1257 //-----------------------------------------------------------------------------
1258 // device context implementation
1259 //
1260 // more and more of the dc functionality should be implemented by calling
1261 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1262 // also coordinate conversions should be moved to native matrix ops
1263 //-----------------------------------------------------------------------------
1264
1265 // we always stock two context states, one at entry, to be able to preserve the
1266 // state we were called with, the other one after changing to HI Graphics orientation
1267 // (this one is used for getting back clippings etc)
1268
1269 //-----------------------------------------------------------------------------
1270 // wxMacCoreGraphicsContext implementation
1271 //-----------------------------------------------------------------------------
1272
1273 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1274
1275 void wxMacCoreGraphicsContext::Init()
1276 {
1277     m_cgContext = NULL;
1278         m_releaseContext = false;
1279     m_windowRef = NULL;
1280         m_originX = 0;
1281         m_originY = 0;
1282     HIRect r = CGRectMake(0,0,0,0);
1283     m_clipRgn.Set(HIShapeCreateWithRect(&r));
1284 }
1285
1286 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext ) : wxGraphicsContext(renderer)
1287 {
1288         Init();
1289         m_cgContext = cgcontext;
1290     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1291     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1292     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1293     // for this one operation.
1294
1295     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1296     // can be removed.
1297     if (m_cgContext)
1298     {
1299         CGContextSaveGState( m_cgContext );
1300         CGContextSaveGState( m_cgContext );
1301     }
1302 }
1303
1304 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1305 {
1306         Init();
1307         m_windowRef = window;
1308 }
1309
1310 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1311 {
1312         Init();
1313         m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1314     m_originX = m_originY = 0;
1315     window->MacWindowToRootWindow( &m_originX , &m_originY );
1316 }
1317
1318 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1319 {
1320         Init();
1321 }
1322
1323 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1324 {
1325         Init();
1326     wxLogDebug(wxT("Illegal Constructor called"));
1327 }
1328
1329 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1330 {
1331     SetPen(NULL);
1332     SetFont(NULL);
1333     SetBrush(NULL);
1334
1335     if ( m_cgContext )
1336     {
1337         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1338         CGContextRestoreGState( m_cgContext );
1339         CGContextRestoreGState( m_cgContext );
1340     }
1341
1342     if ( m_releaseContext )
1343                 QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1344 }
1345
1346 void wxMacCoreGraphicsContext::EnsureIsValid()
1347 {
1348         if ( !m_cgContext )
1349         {
1350                 OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1351                 wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
1352                 Rect bounds;
1353                 GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1354                 CGContextSaveGState( m_cgContext );
1355                 CGContextTranslateCTM( m_cgContext , 0 , bounds.bottom - bounds.top );
1356                 CGContextScaleCTM( m_cgContext , 1 , -1 );
1357                 CGContextTranslateCTM( m_cgContext, m_originX, m_originY );
1358                 CGContextSaveGState( m_cgContext );
1359                 m_releaseContext = true;
1360                 if ( !HIShapeIsEmpty(m_clipRgn) )
1361                 {
1362                         HIShapeReplacePathInCGContext( m_clipRgn, m_cgContext );
1363                         CGContextClip( m_cgContext );
1364                 }
1365         }
1366 }
1367
1368
1369 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1370 {
1371         if( m_cgContext )
1372         {
1373                 HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
1374                 HIShapeReplacePathInCGContext( shape, m_cgContext );
1375                 CGContextClip( m_cgContext );
1376                 CFRelease( shape );
1377         }
1378         else
1379         {
1380                 m_clipRgn.Set(HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() ));
1381         }
1382 }
1383
1384 // clips drawings to the rect
1385 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1386 {
1387         HIRect r = CGRectMake( x , y , w , h );
1388         if ( m_cgContext )
1389         {
1390                 CGContextClipToRect( m_cgContext, r );
1391         }
1392         else
1393         {
1394                 m_clipRgn.Set(HIShapeCreateWithRect(&r));
1395         }
1396 }
1397
1398         // resets the clipping to original extent
1399 void wxMacCoreGraphicsContext::ResetClip()
1400 {
1401         if ( m_cgContext )
1402         {
1403                 CGContextRestoreGState( m_cgContext );
1404                 CGContextSaveGState( m_cgContext );
1405         }
1406         else
1407         {
1408         HIRect r = CGRectMake(0,0,0,0);
1409         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1410         }
1411 }
1412
1413 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath *path )
1414 {
1415     if ( m_pen == NULL )
1416         return ;
1417
1418         EnsureIsValid();
1419
1420     bool offset = ShouldOffset();
1421     if ( offset )
1422         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1423
1424     m_pen->Apply(this);
1425     CGContextAddPath( m_cgContext , (CGPathRef) path->GetNativePath() );
1426     CGContextStrokePath( m_cgContext );
1427
1428     if ( offset )
1429         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1430 }
1431
1432 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath *path , int fillStyle )
1433 {
1434     if ( m_brush != NULL && ((wxMacCoreGraphicsBrush*)m_brush)->IsShading() )
1435     {
1436         // when using shading, we cannot draw pen and brush at the same time
1437         // revert to the base implementation of first filling and then stroking
1438         wxGraphicsContext::DrawPath( path, fillStyle );
1439         return;
1440     }
1441
1442     CGPathDrawingMode mode = kCGPathFill ;
1443     if ( m_brush == NULL )
1444     {
1445         if ( m_pen == NULL )
1446             return;
1447         else
1448             mode = kCGPathStroke;
1449     }
1450     else
1451     {
1452         if ( m_pen == NULL )
1453         {
1454             if ( fillStyle == wxODDEVEN_RULE )
1455                 mode = kCGPathEOFill;
1456             else
1457                 mode = kCGPathFill;
1458         }
1459         else
1460         {
1461             if ( fillStyle == wxODDEVEN_RULE )
1462                 mode = kCGPathEOFillStroke;
1463             else
1464                 mode = kCGPathFillStroke;
1465         }
1466     }
1467
1468         EnsureIsValid();
1469
1470     if ( m_brush )
1471         m_brush->Apply(this);
1472
1473     bool offset = ShouldOffset();
1474
1475     if ( offset )
1476         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1477
1478     CGContextAddPath( m_cgContext , (CGPathRef) path->GetNativePath() );
1479     CGContextDrawPath( m_cgContext , mode );
1480
1481     if ( offset )
1482         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1483 }
1484
1485 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath *path , int fillStyle )
1486 {
1487     if ( m_brush == NULL )
1488         return;
1489
1490         EnsureIsValid();
1491
1492     if ( ((wxMacCoreGraphicsBrush*)m_brush)->IsShading() )
1493     {
1494         CGContextSaveGState( m_cgContext );
1495         CGContextAddPath( m_cgContext , (CGPathRef) path->GetNativePath() );
1496         CGContextClip( m_cgContext );
1497         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrush*)m_brush)->GetShading() );
1498         CGContextRestoreGState( m_cgContext);
1499     }
1500     else
1501     {
1502         m_brush->Apply(this);
1503         CGContextAddPath( m_cgContext , (CGPathRef) path->GetNativePath() );
1504         if ( fillStyle == wxODDEVEN_RULE )
1505             CGContextEOFillPath( m_cgContext );
1506         else
1507             CGContextFillPath( m_cgContext );
1508     }
1509 }
1510
1511 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1512 {
1513     // we allow either setting or clearing but not replacing
1514     wxASSERT( m_cgContext == NULL || cg == NULL );
1515
1516     if ( cg )
1517         CGContextSaveGState( cg );
1518     m_cgContext = cg;
1519 }
1520
1521 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1522 {
1523         EnsureIsValid();
1524
1525     CGContextTranslateCTM( m_cgContext, dx, dy );
1526 }
1527
1528 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1529 {
1530         EnsureIsValid();
1531
1532     CGContextScaleCTM( m_cgContext , xScale , yScale );
1533 }
1534
1535 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1536 {
1537         EnsureIsValid();
1538
1539     CGContextRotateCTM( m_cgContext , angle );
1540 }
1541
1542 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1543 {
1544         EnsureIsValid();
1545
1546     CGImageRef image = (CGImageRef)( bmp.CGImageCreate() );
1547     HIRect r = CGRectMake( x , y , w , h );
1548     HIViewDrawCGImage( m_cgContext , &r , image );
1549     CGImageRelease( image );
1550 }
1551
1552 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1553 {
1554         EnsureIsValid();
1555
1556     CGRect r = CGRectMake( 00 , 00 , w , h );
1557     CGContextSaveGState( m_cgContext );
1558     CGContextTranslateCTM( m_cgContext, x , y + h );
1559     CGContextScaleCTM( m_cgContext, 1, -1 );
1560     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1561         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1562     CGContextRestoreGState( m_cgContext );
1563 }
1564
1565 void wxMacCoreGraphicsContext::PushState()
1566 {
1567         EnsureIsValid();
1568
1569     CGContextSaveGState( m_cgContext );
1570 }
1571
1572 void wxMacCoreGraphicsContext::PopState()
1573 {
1574         EnsureIsValid();
1575
1576     CGContextRestoreGState( m_cgContext );
1577 }
1578
1579 // sets the pen
1580 void wxMacCoreGraphicsContext::SetPen( wxGraphicsPen* pen , bool release )
1581 {
1582     wxGraphicsContext::SetPen( pen, release );
1583 }
1584
1585 // sets the brush for filling
1586 void wxMacCoreGraphicsContext::SetBrush( wxGraphicsBrush* brush , bool release )
1587 {
1588     wxGraphicsContext::SetBrush( brush, release );
1589 }
1590
1591 // sets the font
1592 void wxMacCoreGraphicsContext::SetFont( wxGraphicsFont* font, bool release )
1593 {
1594     wxGraphicsContext::SetFont( font, release );
1595 }
1596
1597 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1598 {
1599     DrawText(str, x, y, 0.0);
1600 }
1601
1602 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1603 {
1604     if ( m_font == NULL )
1605         return;
1606
1607         EnsureIsValid();
1608
1609     OSStatus status = noErr;
1610     ATSUTextLayout atsuLayout;
1611     UniCharCount chars = str.length();
1612     UniChar* ubuf = NULL;
1613
1614 #if SIZEOF_WCHAR_T == 4
1615     wxMBConvUTF16 converter;
1616 #if wxUSE_UNICODE
1617     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1618     ubuf = (UniChar*) malloc( unicharlen + 2 );
1619     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1620 #else
1621     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1622     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1623     ubuf = (UniChar*) malloc( unicharlen + 2 );
1624     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1625 #endif
1626     chars = unicharlen / 2;
1627 #else
1628 #if wxUSE_UNICODE
1629     ubuf = (UniChar*) str.wc_str();
1630 #else
1631     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1632     chars = wxWcslen( wchar.data() );
1633     ubuf = (UniChar*) wchar.data();
1634 #endif
1635 #endif
1636
1637     ATSUStyle style = (((wxMacCoreGraphicsFont*)m_font)->GetATSUStyle());
1638     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1639         &chars , &style , &atsuLayout );
1640
1641     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
1642
1643     status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1644     wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1645
1646     int iAngle = int( angle * RAD2DEG );
1647     if ( abs(iAngle) > 0 )
1648     {
1649         Fixed atsuAngle = IntToFixed( iAngle );
1650         ATSUAttributeTag atsuTags[] =
1651         {
1652             kATSULineRotationTag ,
1653         };
1654         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1655         {
1656             sizeof( Fixed ) ,
1657         };
1658         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1659         {
1660             &atsuAngle ,
1661         };
1662         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1663             atsuTags, atsuSizes, atsuValues );
1664     }
1665
1666     {
1667         ATSUAttributeTag atsuTags[] =
1668         {
1669             kATSUCGContextTag ,
1670         };
1671         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1672         {
1673             sizeof( CGContextRef ) ,
1674         };
1675         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1676         {
1677             &m_cgContext ,
1678         };
1679         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1680             atsuTags, atsuSizes, atsuValues );
1681     }
1682
1683     ATSUTextMeasurement textBefore, textAfter;
1684     ATSUTextMeasurement ascent, descent;
1685
1686     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1687         &textBefore , &textAfter, &ascent , &descent );
1688
1689     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1690
1691     Rect rect;
1692 /*
1693     // TODO
1694     if ( m_backgroundMode == wxSOLID )
1695     {
1696         wxGraphicsPath* path = m_graphicContext->CreatePath();
1697         path->MoveToPoint( drawX , drawY );
1698         path->AddLineToPoint(
1699             (int) (drawX + sin(angle / RAD2DEG) * FixedToInt(ascent + descent)) ,
1700             (int) (drawY + cos(angle / RAD2DEG) * FixedToInt(ascent + descent)) );
1701         path->AddLineToPoint(
1702             (int) (drawX + sin(angle / RAD2DEG) * FixedToInt(ascent + descent ) + cos(angle / RAD2DEG) * FixedToInt(textAfter)) ,
1703             (int) (drawY + cos(angle / RAD2DEG) * FixedToInt(ascent + descent) - sin(angle / RAD2DEG) * FixedToInt(textAfter)) );
1704         path->AddLineToPoint(
1705             (int) (drawX + cos(angle / RAD2DEG) * FixedToInt(textAfter)) ,
1706             (int) (drawY - sin(angle / RAD2DEG) * FixedToInt(textAfter)) );
1707
1708         m_graphicContext->FillPath( path , m_textBackgroundColour );
1709         delete path;
1710     }
1711 */
1712     x += (int)(sin(angle / RAD2DEG) * FixedToInt(ascent));
1713     y += (int)(cos(angle / RAD2DEG) * FixedToInt(ascent));
1714
1715     status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1716         IntToFixed(x) , IntToFixed(y) , &rect );
1717     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1718
1719     CGContextSaveGState(m_cgContext);
1720     CGContextTranslateCTM(m_cgContext, x, y);
1721     CGContextScaleCTM(m_cgContext, 1, -1);
1722     status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1723         IntToFixed(0) , IntToFixed(0) );
1724
1725     wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
1726
1727     CGContextRestoreGState(m_cgContext);
1728
1729     ::ATSUDisposeTextLayout(atsuLayout);
1730
1731 #if SIZEOF_WCHAR_T == 4
1732     free( ubuf );
1733 #endif
1734 }
1735
1736 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1737                             wxDouble *descent, wxDouble *externalLeading ) const
1738 {
1739     wxCHECK_RET( m_font != NULL, wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
1740
1741     OSStatus status = noErr;
1742
1743     ATSUTextLayout atsuLayout;
1744     UniCharCount chars = str.length();
1745     UniChar* ubuf = NULL;
1746
1747 #if SIZEOF_WCHAR_T == 4
1748     wxMBConvUTF16 converter;
1749 #if wxUSE_UNICODE
1750     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1751     ubuf = (UniChar*) malloc( unicharlen + 2 );
1752     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1753 #else
1754     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1755     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1756     ubuf = (UniChar*) malloc( unicharlen + 2 );
1757     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1758 #endif
1759     chars = unicharlen / 2;
1760 #else
1761 #if wxUSE_UNICODE
1762     ubuf = (UniChar*) str.wc_str();
1763 #else
1764     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1765     chars = wxWcslen( wchar.data() );
1766     ubuf = (UniChar*) wchar.data();
1767 #endif
1768 #endif
1769
1770     ATSUStyle style = (((wxMacCoreGraphicsFont*)m_font)->GetATSUStyle());
1771     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1772         &chars , &style , &atsuLayout );
1773
1774     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
1775
1776     ATSUTextMeasurement textBefore, textAfter;
1777     ATSUTextMeasurement textAscent, textDescent;
1778
1779     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1780         &textBefore , &textAfter, &textAscent , &textDescent );
1781
1782     if ( height )
1783         *height = FixedToInt(textAscent + textDescent);
1784     if ( descent )
1785         *descent = FixedToInt(textDescent);
1786     if ( externalLeading )
1787         *externalLeading = 0;
1788     if ( width )
1789         *width = FixedToInt(textAfter - textBefore);
1790
1791     ::ATSUDisposeTextLayout(atsuLayout);
1792 }
1793
1794 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1795 {
1796     widths.Empty();
1797     widths.Add(0, text.length());
1798
1799     if (text.empty())
1800         return;
1801
1802     ATSUTextLayout atsuLayout;
1803     UniCharCount chars = text.length();
1804     UniChar* ubuf = NULL;
1805
1806 #if SIZEOF_WCHAR_T == 4
1807     wxMBConvUTF16 converter;
1808 #if wxUSE_UNICODE
1809     size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
1810     ubuf = (UniChar*) malloc( unicharlen + 2 );
1811     converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );
1812 #else
1813     const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1814     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1815     ubuf = (UniChar*) malloc( unicharlen + 2 );
1816     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1817 #endif
1818     chars = unicharlen / 2;
1819 #else
1820 #if wxUSE_UNICODE
1821     ubuf = (UniChar*) text.wc_str();
1822 #else
1823     wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1824     chars = wxWcslen( wchar.data() );
1825     ubuf = (UniChar*) wchar.data();
1826 #endif
1827 #endif
1828
1829     ATSUStyle style = (((wxMacCoreGraphicsFont*)m_font)->GetATSUStyle());
1830     ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1831         &chars , &style , &atsuLayout );
1832
1833     for ( int pos = 0; pos < (int)chars; pos ++ )
1834     {
1835         unsigned long actualNumberOfBounds = 0;
1836         ATSTrapezoid glyphBounds;
1837
1838         // We get a single bound, since the text should only require one. If it requires more, there is an issue
1839         OSStatus result;
1840         result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
1841             kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
1842         if (result != noErr || actualNumberOfBounds != 1 )
1843             return;
1844
1845         widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
1846         //unsigned char uch = s[i];
1847     }
1848
1849     ::ATSUDisposeTextLayout(atsuLayout);
1850 }
1851
1852 void * wxMacCoreGraphicsContext::GetNativeContext()
1853 {
1854         return m_cgContext;
1855 }
1856
1857 // concatenates this transform with the current transform of this context
1858 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix* matrix )
1859 {
1860 }
1861
1862 // sets the transform of this context
1863 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix* matrix )
1864 {
1865 }
1866
1867 // gets the matrix of this context
1868 void wxMacCoreGraphicsContext::GetTransform( wxGraphicsMatrix* matrix )
1869 {
1870 }
1871
1872 //
1873 // Renderer
1874 //
1875
1876 //-----------------------------------------------------------------------------
1877 // wxMacCoreGraphicsRenderer declaration
1878 //-----------------------------------------------------------------------------
1879
1880 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
1881 {
1882 public :
1883     wxMacCoreGraphicsRenderer() {}
1884
1885     virtual ~wxMacCoreGraphicsRenderer() {}
1886
1887         // Context
1888
1889         virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1890
1891         virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1892
1893         virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1894
1895         virtual wxGraphicsContext * CreateContext( wxWindow* window );
1896
1897         // Path
1898
1899     virtual wxGraphicsPath * CreatePath();
1900
1901         // Matrix
1902
1903         virtual wxGraphicsMatrix * CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1904                 wxDouble tx=0.0, wxDouble ty=0.0);
1905
1906
1907     virtual wxGraphicsPen* CreatePen(const wxPen& pen) ;
1908
1909     virtual wxGraphicsBrush* CreateBrush(const wxBrush& brush ) ;
1910
1911     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1912     virtual wxGraphicsBrush* CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1913         const wxColour&c1, const wxColour&c2) ;
1914
1915     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1916     // with radius r and color cColor
1917     virtual wxGraphicsBrush* CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1918         const wxColour &oColor, const wxColour &cColor) ;
1919
1920    // sets the font
1921     virtual wxGraphicsFont* CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1922
1923 private :
1924     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
1925 } ;
1926
1927 //-----------------------------------------------------------------------------
1928 // wxMacCoreGraphicsRenderer implementation
1929 //-----------------------------------------------------------------------------
1930
1931 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
1932
1933 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
1934
1935 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1936 {
1937         return &gs_MacCoreGraphicsRenderer;
1938 }
1939
1940 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc)
1941 {
1942    return new wxMacCoreGraphicsContext(this,(CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
1943 }
1944
1945 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
1946 {
1947     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
1948 }
1949
1950
1951 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
1952 {
1953     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
1954 }
1955
1956 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
1957 {
1958         return new wxMacCoreGraphicsContext(this, window );
1959 }
1960
1961 // Path
1962
1963 wxGraphicsPath * wxMacCoreGraphicsRenderer::CreatePath()
1964 {
1965         return new wxMacCoreGraphicsPath( this );
1966 }
1967
1968
1969 // Matrix
1970
1971 wxGraphicsMatrix * wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1972         wxDouble tx, wxDouble ty)
1973
1974 {
1975     wxMacCoreGraphicsMatrix* m = new wxMacCoreGraphicsMatrix( this );
1976     m->Set( a,b,c,d,tx,ty ) ;
1977     return m;
1978 }
1979
1980 wxGraphicsPen* wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
1981 {
1982     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
1983         return NULL;
1984     else
1985         return new wxMacCoreGraphicsPen( this, pen );
1986 }
1987
1988 wxGraphicsBrush* wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
1989 {
1990     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
1991         return NULL;
1992     else
1993         return new wxMacCoreGraphicsBrush( this, brush );
1994 }
1995
1996 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1997 wxGraphicsBrush* wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1998     const wxColour&c1, const wxColour&c2)
1999 {
2000     wxMacCoreGraphicsBrush* brush = new wxMacCoreGraphicsBrush(this);
2001     brush->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
2002     return brush;
2003 }
2004
2005 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2006 // with radius r and color cColor
2007 wxGraphicsBrush* wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2008     const wxColour &oColor, const wxColour &cColor)
2009 {
2010     wxMacCoreGraphicsBrush* brush = new wxMacCoreGraphicsBrush(this);
2011     brush->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2012     return brush;
2013 }
2014
2015 // sets the font
2016 wxGraphicsFont* wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2017 {
2018     if ( font.Ok() )
2019         return new wxMacCoreGraphicsFont( this , font, col );
2020     else
2021         return NULL;
2022 }
2023
2024
2025
2026 #endif // wxMAC_USE_CORE_GRAPHICS