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 wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 260 {
 261 public:
 262     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 263     ~wxMacCoreGraphicsPenData();
 264
 265     void Init();
 266     virtual void Apply( wxGraphicsContext* context );
 267     virtual wxDouble GetWidth() { return m_width; }
 268
 269 protected :
 270     CGLineCap m_cap;
 271     wxMacCFRefHolder<CGColorRef> m_color;
 272     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 273
 274     CGLineJoin m_join;
 275     CGFloat m_width;
 276
 277     int m_count;
 278     const CGFloat *m_lengths;
 279     CGFloat *m_userLengths;
 280
 281
 282     bool m_isPattern;
 283     wxMacCFRefHolder<CGPatternRef> m_pattern;
 284     CGFloat* m_patternColorComponents;
 285 };
 286
 287 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 288     wxGraphicsObjectRefData( renderer )
 289 {
 290     Init();
 291
 292     float components[4] = { pen.GetColour().Red() / 255.0 , pen.GetColour().Green() / 255.0 ,
 293             pen.GetColour().Blue() / 255.0 , pen.GetColour().Alpha() / 255.0 } ;
 294     m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 295
 296     // TODO: * m_dc->m_scaleX
 297     m_width = pen.GetWidth();
 298     if (m_width <= 0.0)
 299         m_width = 0.1;
 300
 301     switch ( pen.GetCap() )
 302     {
 303         case wxCAP_ROUND :
 304             m_cap = kCGLineCapRound;
 305             break;
 306
 307         case wxCAP_PROJECTING :
 308             m_cap = kCGLineCapSquare;
 309             break;
 310
 311         case wxCAP_BUTT :
 312             m_cap = kCGLineCapButt;
 313             break;
 314
 315         default :
 316             m_cap = kCGLineCapButt;
 317             break;
 318     }
 319
 320     switch ( pen.GetJoin() )
 321     {
 322         case wxJOIN_BEVEL :
 323             m_join = kCGLineJoinBevel;
 324             break;
 325
 326         case wxJOIN_MITER :
 327             m_join = kCGLineJoinMiter;
 328             break;
 329
 330         case wxJOIN_ROUND :
 331             m_join = kCGLineJoinRound;
 332             break;
 333
 334         default :
 335             m_join = kCGLineJoinMiter;
 336             break;
 337     }
 338
 339     const CGFloat dashUnit = m_width < 1.0 ? 1.0 : m_width;
 340
 341     const CGFloat dotted[] = { dashUnit , dashUnit + 2.0 };
 342     static const CGFloat short_dashed[] = { 9.0 , 6.0 };
 343     static const CGFloat dashed[] = { 19.0 , 9.0 };
 344     static const CGFloat dotted_dashed[] = { 9.0 , 6.0 , 3.0 , 3.0 };
 345
 346     switch ( pen.GetStyle() )
 347     {
 348         case wxSOLID :
 349             break;
 350
 351         case wxDOT :
 352             m_count = WXSIZEOF(dotted);
 353             m_userLengths = new CGFloat[ m_count ] ;
 354             memcpy( m_userLengths, dotted, sizeof(dotted) );
 355             m_lengths = m_userLengths;
 356             break;
 357
 358         case wxLONG_DASH :
 359             m_count = WXSIZEOF(dashed);
 360             m_lengths = dashed;
 361             break;
 362
 363         case wxSHORT_DASH :
 364             m_count = WXSIZEOF(short_dashed);
 365             m_lengths = short_dashed;
 366             break;
 367
 368         case wxDOT_DASH :
 369             m_count = WXSIZEOF(dotted_dashed);
 370             m_lengths = dotted_dashed;
 371             break;
 372
 373         case wxUSER_DASH :
 374             wxDash *dashes;
 375             m_count = pen.GetDashes( &dashes );
 376             if ((dashes != NULL) && (m_count > 0))
 377             {
 378                 m_userLengths = new CGFloat[m_count];
 379                 for ( int i = 0; i < m_count; ++i )
 380                 {
 381                     m_userLengths[i] = dashes[i] * dashUnit;
 382
 383                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 384                         m_userLengths[i] = dashUnit + 2.0;
 385                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 386                         m_userLengths[i] = dashUnit;
 387                 }
 388             }
 389             m_lengths = m_userLengths;
 390             break;
 391
 392         case wxSTIPPLE :
 393             {
 394                 wxBitmap* bmp = pen.GetStipple();
 395                 if ( bmp && bmp->Ok() )
 396                 {
 397                     m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 398                     m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 399                     m_patternColorComponents = new CGFloat[1] ;
 400                     m_patternColorComponents[0] = 1.0;
 401                     m_isPattern = true;
 402                 }
 403             }
 404             break;
 405
 406         default :
 407             {
 408                 m_isPattern = true;
 409                 m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 410                 m_pattern.Set( *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 411                 m_patternColorComponents = new CGFloat[4] ;
 412                 m_patternColorComponents[0] = pen.GetColour().Red() / 255.0;
 413                 m_patternColorComponents[1] = pen.GetColour().Green() / 255.0;
 414                 m_patternColorComponents[2] = pen.GetColour().Blue() / 255.0;
 415                 m_patternColorComponents[3] =  pen.GetColour().Alpha() / 255.0;
 416             }
 417             break;
 418     }
 419     if ((m_lengths != NULL) && (m_count > 0))
 420     {
 421         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 422         m_cap = kCGLineCapButt;
 423     }
 424 }
 425
 426 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 427 {
 428     delete[] m_userLengths;
 429     delete[] m_patternColorComponents;
 430 }
 431
 432 void wxMacCoreGraphicsPenData::Init()
 433 {
 434     m_lengths = NULL;
 435     m_userLengths = NULL;
 436     m_width = 0;
 437     m_count = 0;
 438     m_patternColorComponents = NULL;
 439     m_isPattern = false;
 440 }
 441
 442 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 443 {
 444     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 445     CGContextSetLineWidth( cg , m_width );
 446     CGContextSetLineJoin( cg , m_join );
 447
 448     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 449     CGContextSetLineCap( cg , m_cap );
 450
 451     if ( m_isPattern )
 452     {
 453         CGAffineTransform matrix = CGContextGetCTM( cg );
 454         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 455         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 456         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 457     }
 458     else
 459     {
 460         CGContextSetStrokeColorWithColor( cg , m_color );
 461     }
 462 }
 463
 464 //
 465 // Brush
 466 //
 467
 468 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 469 {
 470 public:
 471     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 472     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 473     ~wxMacCoreGraphicsBrushData ();
 474
 475     virtual void Apply( wxGraphicsContext* context );
 476     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 477         const wxColour&c1, const wxColour&c2 );
 478     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 479     const wxColour &oColor, const wxColour &cColor );
 480
 481     virtual bool IsShading() { return m_isShading; }
 482     CGShadingRef GetShading() { return m_shading; }
 483 protected:
 484     CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
 485     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 486     virtual void Init();
 487
 488     wxMacCFRefHolder<CGColorRef> m_color;
 489     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 490
 491     bool m_isPattern;
 492     wxMacCFRefHolder<CGPatternRef> m_pattern;
 493     CGFloat* m_patternColorComponents;
 494
 495     bool m_isShading;
 496     CGFunctionRef m_gradientFunction;
 497     CGShadingRef m_shading;
 498     CGFloat *m_gradientComponents;
 499 };
 500
 501 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 502 {
 503     Init();
 504 }
 505
 506 void wxMacCoreGraphicsBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 507         const wxColour&c1, const wxColour&c2 )
 508 {
 509     m_gradientFunction = CreateGradientFunction( c1, c2 );
 510     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake(x1,y1), CGPointMake(x2,y2), m_gradientFunction, true, true ) ;
 511     m_isShading = true ;
 512 }
 513
 514 void wxMacCoreGraphicsBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 515     const wxColour &oColor, const wxColour &cColor )
 516 {
 517     m_gradientFunction = CreateGradientFunction( oColor, cColor );
 518     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake(xo,yo), 0, CGPointMake(xc,yc), radius, m_gradientFunction, true, true ) ;
 519     m_isShading = true ;
 520 }
 521
 522 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer )
 523 {
 524     Init();
 525
 526     if ( brush.GetStyle() == wxSOLID )
 527     {
 528         float components[4] = { brush.GetColour().Red() / 255.0 , brush.GetColour().Green() / 255.0 ,
 529                 brush.GetColour().Blue() / 255.0 , brush.GetColour().Alpha() / 255.0 } ;
 530         m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 531     }
 532     else if ( brush.IsHatch() )
 533     {
 534         m_isPattern = true;
 535         m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 536         m_pattern.Set( *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 537
 538         m_patternColorComponents = new CGFloat[4] ;
 539         m_patternColorComponents[0] = brush.GetColour().Red() / 255.0;
 540         m_patternColorComponents[1] = brush.GetColour().Green() / 255.0;
 541         m_patternColorComponents[2] = brush.GetColour().Blue() / 255.0;
 542         m_patternColorComponents[3] = brush.GetColour().Alpha() / 255.0;
 543     }
 544     else
 545     {
 546         // now brush is a bitmap
 547         wxBitmap* bmp = brush.GetStipple();
 548         if ( bmp && bmp->Ok() )
 549         {
 550             m_isPattern = true;
 551             m_patternColorComponents = new CGFloat[1] ;
 552             m_patternColorComponents[0] = 1.0;
 553             m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 554             m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 555         }
 556     }
 557 }
 558
 559 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 560 {
 561     if ( m_shading )
 562         CGShadingRelease(m_shading);
 563
 564     if( m_gradientFunction )
 565         CGFunctionRelease(m_gradientFunction);
 566
 567     delete[] m_gradientComponents;
 568     delete[] m_patternColorComponents;
 569 }
 570
 571 void wxMacCoreGraphicsBrushData::Init()
 572 {
 573     m_patternColorComponents = NULL;
 574     m_gradientFunction = NULL;
 575     m_shading = NULL;
 576     m_isPattern = false;
 577     m_gradientComponents = NULL;
 578     m_isShading = false;
 579 }
 580
 581 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 582 {
 583     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 584
 585     if ( m_isShading )
 586     {
 587         // nothing to set as shades are processed by clipping using the path and filling
 588     }
 589     else
 590     {
 591         if ( m_isPattern )
 592         {
 593             CGAffineTransform matrix = CGContextGetCTM( cg );
 594             CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 595             CGContextSetFillColorSpace( cg , m_colorSpace );
 596             CGContextSetFillPattern( cg, m_pattern , m_patternColorComponents );
 597         }
 598         else
 599         {
 600             CGContextSetFillColorWithColor( cg, m_color );
 601         }
 602     }
 603 }
 604
 605 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 606 {
 607     CGFloat* colors = (CGFloat*) info ;
 608     CGFloat f = *in;
 609     for( int i = 0 ; i < 4 ; ++i )
 610     {
 611         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 612     }
 613 }
 614
 615 CGFunctionRef wxMacCoreGraphicsBrushData::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
 616 {
 617     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 618     static const CGFloat input_value_range [2] = { 0, 1 };
 619     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 620     m_gradientComponents = new CGFloat[8] ;
 621     m_gradientComponents[0] = c1.Red() / 255.0;
 622     m_gradientComponents[1] = c1.Green() / 255.0;
 623     m_gradientComponents[2] = c1.Blue() / 255.0;
 624     m_gradientComponents[3] = c1.Alpha() / 255.0;
 625     m_gradientComponents[4] = c2.Red() / 255.0;
 626     m_gradientComponents[5] = c2.Green() / 255.0;
 627     m_gradientComponents[6] = c2.Blue() / 255.0;
 628     m_gradientComponents[7] = c2.Alpha() / 255.0;
 629
 630     return CGFunctionCreate ( m_gradientComponents,  1,
 631                             input_value_range,
 632                             4,
 633                             output_value_ranges,
 634                             &callbacks);
 635 }
 636
 637 //
 638 // Font
 639 //
 640
 641 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 642 {
 643 public:
 644     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 645     ~wxMacCoreGraphicsFontData();
 646
 647     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 648 private :
 649     ATSUStyle m_macATSUIStyle;
 650 };
 651
 652 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 653 {
 654     m_macATSUIStyle = NULL;
 655
 656     OSStatus status;
 657
 658     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 659
 660     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 661
 662     // we need the scale here ...
 663
 664     Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
 665     RGBColor atsuColor = MAC_WXCOLORREF( col.GetPixel() );
 666     ATSUAttributeTag atsuTags[] =
 667     {
 668             kATSUSizeTag ,
 669             kATSUColorTag ,
 670     };
 671     ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 672     {
 673             sizeof( Fixed ) ,
 674             sizeof( RGBColor ) ,
 675     };
 676     ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 677     {
 678             &atsuSize ,
 679             &atsuColor ,
 680     };
 681
 682     status = ::ATSUSetAttributes(
 683         m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
 684         atsuTags, atsuSizes, atsuValues);
 685
 686     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 687 }
 688
 689 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 690 {
 691     if ( m_macATSUIStyle )
 692     {
 693         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 694         m_macATSUIStyle = NULL;
 695     }
 696 }
 697
 698 //
 699 // Graphics Matrix
 700 //
 701
 702 //-----------------------------------------------------------------------------
 703 // wxMacCoreGraphicsMatrix declaration
 704 //-----------------------------------------------------------------------------
 705
 706 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
 707 {
 708 public :
 709     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
 710
 711     virtual ~wxMacCoreGraphicsMatrixData() ;
 712
 713     virtual wxGraphicsObjectRefData *Clone() const ;
 714
 715     // concatenates the matrix
 716     virtual void Concat( const wxGraphicsMatrixData *t );
 717
 718     // sets the matrix to the respective values
 719     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 720         wxDouble tx=0.0, wxDouble ty=0.0);
 721
 722     // makes this the inverse matrix
 723     virtual void Invert();
 724
 725     // returns true if the elements of the transformation matrix are equal ?
 726     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 727
 728     // return true if this is the identity matrix
 729     virtual bool IsIdentity() const;
 730
 731     //
 732     // transformation
 733     //
 734
 735     // add the translation to this matrix
 736     virtual void Translate( wxDouble dx , wxDouble dy );
 737
 738     // add the scale to this matrix
 739     virtual void Scale( wxDouble xScale , wxDouble yScale );
 740
 741     // add the rotation to this matrix (radians)
 742     virtual void Rotate( wxDouble angle );
 743
 744     //
 745     // apply the transforms
 746     //
 747
 748     // applies that matrix to the point
 749     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 750
 751     // applies the matrix except for translations
 752     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 753
 754     // returns the native representation
 755     virtual void * GetNativeMatrix() const;
 756
 757 private :
 758     CGAffineTransform m_matrix;
 759 } ;
 760
 761 //-----------------------------------------------------------------------------
 762 // wxMacCoreGraphicsMatrix implementation
 763 //-----------------------------------------------------------------------------
 764
 765 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
 766 {
 767 }
 768
 769 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
 770 {
 771 }
 772
 773 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 774 {
 775     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
 776     m->m_matrix = m_matrix ;
 777     return m;
 778 }
 779
 780 // concatenates the matrix
 781 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 782 {
 783     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 784 }
 785
 786 // sets the matrix to the respective values
 787 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 788     wxDouble tx, wxDouble ty)
 789 {
 790     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 791 }
 792
 793 // makes this the inverse matrix
 794 void wxMacCoreGraphicsMatrixData::Invert()
 795 {
 796     m_matrix = CGAffineTransformInvert( m_matrix );
 797 }
 798
 799 // returns true if the elements of the transformation matrix are equal ?
 800 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 801 {
 802     const CGAffineTransform* tm = (CGAffineTransform*) t->GetNativeMatrix();
 803 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
 804     if ( CGAffineTransformEqualToTransform!=NULL )
 805     {
 806         return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 807     }
 808     else
 809 #endif
 810     {
 811         return (
 812             m_matrix.a == tm->a &&
 813             m_matrix.b == tm->b &&
 814             m_matrix.c == tm->c &&
 815             m_matrix.d == tm->d &&
 816             m_matrix.tx == tm->tx &&
 817             m_matrix.ty == tm->ty ) ;
 818     }
 819 }
 820
 821 // return true if this is the identity matrix
 822 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
 823 {
 824     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
 825         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
 826 }
 827
 828 //
 829 // transformation
 830 //
 831
 832 // add the translation to this matrix
 833 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
 834 {
 835     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
 836 }
 837
 838 // add the scale to this matrix
 839 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 840 {
 841     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
 842 }
 843
 844 // add the rotation to this matrix (radians)
 845 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
 846 {
 847     m_matrix = CGAffineTransformRotate( m_matrix, angle);
 848 }
 849
 850 //
 851 // apply the transforms
 852 //
 853
 854 // applies that matrix to the point
 855 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
 856 {
 857     CGPoint pt = CGPointApplyAffineTransform( CGPointMake(*x,*y), m_matrix);
 858
 859     *x = pt.x;
 860     *y = pt.y;
 861 }
 862
 863 // applies the matrix except for translations
 864 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
 865 {
 866     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake(*dx,*dy) , m_matrix );
 867     *dx = sz.width;
 868     *dy = sz.height;
 869 }
 870
 871 // returns the native representation
 872 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
 873 {
 874     return (void*) &m_matrix;
 875 }
 876
 877 //
 878 // Graphics Path
 879 //
 880
 881 //-----------------------------------------------------------------------------
 882 // wxMacCoreGraphicsPath declaration
 883 //-----------------------------------------------------------------------------
 884
 885 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
 886 {
 887 public :
 888     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
 889
 890     ~wxMacCoreGraphicsPathData();
 891
 892     virtual wxGraphicsObjectRefData *Clone() const;
 893
 894     // begins a new subpath at (x,y)
 895     virtual void MoveToPoint( wxDouble x, wxDouble y );
 896
 897     // adds a straight line from the current point to (x,y)
 898     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 899
 900     // adds a cubic Bezier curve from the current point, using two control points and an end point
 901     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 902
 903     // closes the current sub-path
 904     virtual void CloseSubpath();
 905
 906     // gets the last point of the current path, (0,0) if not yet set
 907     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 908
 909     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 910     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
 911
 912     //
 913     // These are convenience functions which - if not available natively will be assembled
 914     // using the primitives from above
 915     //
 916
 917     // adds a quadratic Bezier curve from the current point, using a control point and an end point
 918     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
 919
 920     // appends a rectangle as a new closed subpath
 921     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 922
 923     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 924     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 925
 926     // 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)
 927     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 928
 929     // adds another path
 930     virtual void AddPath( const wxGraphicsPathData* path );
 931
 932     // returns the native path
 933     virtual void * GetNativePath() const { return m_path; }
 934
 935     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 936     virtual void UnGetNativePath(void *p) const {}
 937
 938     // transforms each point of this path by the matrix
 939     virtual void Transform( const wxGraphicsMatrixData* matrix );
 940
 941     // gets the bounding box enclosing all points (possibly including control points)
 942     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
 943
 944     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
 945 private :
 946     CGMutablePathRef m_path;
 947 };
 948
 949 //-----------------------------------------------------------------------------
 950 // wxMacCoreGraphicsPath implementation
 951 //-----------------------------------------------------------------------------
 952
 953 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
 954 {
 955     if ( path )
 956         m_path = path;
 957     else
 958         m_path = CGPathCreateMutable();
 959 }
 960
 961 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
 962 {
 963     CGPathRelease( m_path );
 964 }
 965
 966 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
 967 {
 968     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
 969     return clone ;
 970 }
 971
 972
 973 // opens (starts) a new subpath
 974 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
 975 {
 976     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
 977 }
 978
 979 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
 980 {
 981     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
 982 }
 983
 984 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
 985 {
 986     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
 987 }
 988
 989 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
 990 {
 991     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
 992 }
 993
 994 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 995 {
 996     CGRect cgRect = { { x , y } , { w , h } };
 997     CGPathAddRect( m_path , NULL , cgRect );
 998 }
 999
1000 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1001 {
1002     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1003 }
1004
1005 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1006 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1007 {
1008     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1009     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1010 }
1011
1012 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1013 {
1014     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1015 }
1016
1017 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1018 {
1019     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1020 }
1021
1022 // closes the current subpath
1023 void wxMacCoreGraphicsPathData::CloseSubpath()
1024 {
1025     CGPathCloseSubpath( m_path );
1026 }
1027
1028 // gets the last point of the current path, (0,0) if not yet set
1029 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1030 {
1031     CGPoint p = CGPathGetCurrentPoint( m_path );
1032     *x = p.x;
1033     *y = p.y;
1034 }
1035
1036 // transforms each point of this path by the matrix
1037 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1038 {
1039     CGMutablePathRef p = CGPathCreateMutable() ;
1040     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1041     CGPathRelease( m_path );
1042     m_path = p;
1043 }
1044
1045 // gets the bounding box enclosing all points (possibly including control points)
1046 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1047 {
1048     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1049     *x = bounds.origin.x;
1050     *y = bounds.origin.y;
1051     *w = bounds.size.width;
1052     *h = bounds.size.height;
1053 }
1054
1055 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, int fillStyle) const
1056 {
1057 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
1058     if ( CGPathContainsPoint!=NULL )
1059     {
1060         return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1061     }
1062     else
1063 #endif
1064     {
1065         // TODO : implementation for 10.3
1066         CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1067         return CGRectContainsPoint( bounds, CGPointMake(x,y) ) == 1;
1068     }
1069 }
1070
1071 //
1072 // Graphics Context
1073 //
1074
1075 //-----------------------------------------------------------------------------
1076 // wxMacCoreGraphicsContext declaration
1077 //-----------------------------------------------------------------------------
1078
1079 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1080 {
1081 public:
1082     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext );
1083
1084     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1085
1086     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1087
1088     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1089
1090     wxMacCoreGraphicsContext();
1091
1092     ~wxMacCoreGraphicsContext();
1093
1094     void Init();
1095
1096     // push the current state of the context, ie the transformation matrix on a stack
1097     virtual void PushState();
1098
1099     // pops a stored state from the stack
1100     virtual void PopState();
1101
1102     // clips drawings to the region
1103     virtual void Clip( const wxRegion &region );
1104
1105     // clips drawings to the rect
1106     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1107
1108     // resets the clipping to original extent
1109     virtual void ResetClip();
1110
1111     virtual void * GetNativeContext();
1112
1113     //
1114     // transformation
1115     //
1116
1117     // translate
1118     virtual void Translate( wxDouble dx , wxDouble dy );
1119
1120     // scale
1121     virtual void Scale( wxDouble xScale , wxDouble yScale );
1122
1123     // rotate (radians)
1124     virtual void Rotate( wxDouble angle );
1125
1126     // concatenates this transform with the current transform of this context
1127     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1128
1129     // sets the transform of this context
1130     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1131
1132     // gets the matrix of this context
1133     virtual wxGraphicsMatrix GetTransform() const;
1134     //
1135     // setting the paint
1136     //
1137
1138     // strokes along a path with the current pen
1139     virtual void StrokePath( const wxGraphicsPath &path );
1140
1141     // fills a path with the current brush
1142     virtual void FillPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1143
1144     // draws a path by first filling and then stroking
1145     virtual void DrawPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1146
1147     virtual bool ShouldOffset() const
1148     {
1149         int penwidth = 0 ;
1150         if ( !m_pen.IsNull() )
1151         {
1152             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1153             if ( penwidth == 0 )
1154                 penwidth = 1;
1155         }
1156         return ( penwidth % 2 ) == 1;
1157     }
1158     //
1159     // text
1160     //
1161
1162     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1163
1164     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1165
1166     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1167         wxDouble *descent, wxDouble *externalLeading ) const;
1168
1169     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1170
1171     //
1172     // image support
1173     //
1174
1175     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1176
1177     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1178
1179     void SetNativeContext( CGContextRef cg );
1180
1181     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1182     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1183
1184 private:
1185     void EnsureIsValid();
1186
1187     CGContextRef m_cgContext;
1188     WindowRef m_windowRef;
1189     bool m_releaseContext;
1190     CGAffineTransform m_windowTransform;
1191
1192     wxMacCFRefHolder<HIShapeRef> m_clipRgn;
1193 };
1194
1195 //-----------------------------------------------------------------------------
1196 // device context implementation
1197 //
1198 // more and more of the dc functionality should be implemented by calling
1199 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1200 // also coordinate conversions should be moved to native matrix ops
1201 //-----------------------------------------------------------------------------
1202
1203 // we always stock two context states, one at entry, to be able to preserve the
1204 // state we were called with, the other one after changing to HI Graphics orientation
1205 // (this one is used for getting back clippings etc)
1206
1207 //-----------------------------------------------------------------------------
1208 // wxMacCoreGraphicsContext implementation
1209 //-----------------------------------------------------------------------------
1210
1211 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1212
1213 void wxMacCoreGraphicsContext::Init()
1214 {
1215     m_cgContext = NULL;
1216     m_releaseContext = false;
1217     m_windowRef = NULL;
1218
1219     HIRect r = CGRectMake(0,0,0,0);
1220     m_clipRgn.Set(HIShapeCreateWithRect(&r));
1221 }
1222
1223 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext ) : wxGraphicsContext(renderer)
1224 {
1225     Init();
1226     SetNativeContext(cgcontext);
1227 }
1228
1229 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1230 {
1231     Init();
1232     m_windowRef = window;
1233 }
1234
1235 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1236 {
1237     Init();
1238     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1239     int originX , originY;
1240     originX = originY = 0;
1241     window->MacWindowToRootWindow( &originX , &originY );
1242     Rect bounds;
1243     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1244
1245     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1246     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1247     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1248 }
1249
1250 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1251 {
1252     Init();
1253 }
1254
1255 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1256 {
1257     Init();
1258     wxLogDebug(wxT("Illegal Constructor called"));
1259 }
1260
1261 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1262 {
1263     SetNativeContext(NULL);
1264 }
1265
1266 void wxMacCoreGraphicsContext::EnsureIsValid()
1267 {
1268     if ( !m_cgContext )
1269     {
1270         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1271         wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
1272
1273         CGContextConcatCTM( m_cgContext, m_windowTransform );
1274                 CGContextSaveGState( m_cgContext );
1275                 m_releaseContext = true;
1276                 if ( !HIShapeIsEmpty(m_clipRgn) )
1277                 {
1278             // the clip region is in device coordinates, so we convert this again to user coordinates
1279             wxMacCFRefHolder<HIMutableShapeRef> hishape ;
1280             hishape.Set( HIShapeCreateMutableCopy( m_clipRgn ) );
1281             CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1282             HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1283                         HIShapeReplacePathInCGContext( hishape, m_cgContext );
1284                         CGContextClip( m_cgContext );
1285                 }
1286                 CGContextSaveGState( m_cgContext );
1287         }
1288 }
1289
1290
1291 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1292 {
1293     if( m_cgContext )
1294     {
1295         HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
1296         HIShapeReplacePathInCGContext( shape, m_cgContext );
1297         CGContextClip( m_cgContext );
1298         CFRelease( shape );
1299     }
1300     else
1301     {
1302         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1303         // to regions we try at least to have correct translations
1304         wxMacCFRefHolder<HIShapeRef> hishape ;
1305         hishape.Set( HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() ));
1306         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( hishape );
1307
1308         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1309         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1310         m_clipRgn.Set(mutableShape);
1311     }
1312 }
1313
1314 // clips drawings to the rect
1315 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1316 {
1317     HIRect r = CGRectMake( x , y , w , h );
1318     if ( m_cgContext )
1319     {
1320         CGContextClipToRect( m_cgContext, r );
1321     }
1322     else
1323     {
1324         // the clipping itself must be stored as device coordinates, otherwise
1325         // we cannot apply it back correctly
1326         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1327         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1328     }
1329 }
1330
1331     // resets the clipping to original extent
1332 void wxMacCoreGraphicsContext::ResetClip()
1333 {
1334     if ( m_cgContext )
1335     {
1336         // there is no way for clearing the clip, we can only revert to the stored
1337         // state, but then we have to make sure everything else is NOT restored
1338         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1339         CGContextRestoreGState( m_cgContext );
1340         CGContextSaveGState( m_cgContext );
1341         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1342         transformNew = CGAffineTransformInvert( transformNew ) ;
1343         CGContextConcatCTM( m_cgContext, transformNew);
1344         CGContextConcatCTM( m_cgContext, transform);
1345     }
1346     else
1347     {
1348         HIRect r = CGRectMake(0,0,0,0);
1349         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1350     }
1351 }
1352
1353 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1354 {
1355     if ( m_pen.IsNull() )
1356         return ;
1357
1358     EnsureIsValid();
1359
1360     bool offset = ShouldOffset();
1361     if ( offset )
1362         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1363
1364     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1365     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1366     CGContextStrokePath( m_cgContext );
1367
1368     if ( offset )
1369         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1370 }
1371
1372 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , int fillStyle )
1373 {
1374     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1375     {
1376         // when using shading, we cannot draw pen and brush at the same time
1377         // revert to the base implementation of first filling and then stroking
1378         wxGraphicsContext::DrawPath( path, fillStyle );
1379         return;
1380     }
1381
1382     CGPathDrawingMode mode = kCGPathFill ;
1383     if ( m_brush.IsNull() )
1384     {
1385         if ( m_pen.IsNull() )
1386             return;
1387         else
1388             mode = kCGPathStroke;
1389     }
1390     else
1391     {
1392         if ( m_pen.IsNull() )
1393         {
1394             if ( fillStyle == wxODDEVEN_RULE )
1395                 mode = kCGPathEOFill;
1396             else
1397                 mode = kCGPathFill;
1398         }
1399         else
1400         {
1401             if ( fillStyle == wxODDEVEN_RULE )
1402                 mode = kCGPathEOFillStroke;
1403             else
1404                 mode = kCGPathFillStroke;
1405         }
1406     }
1407
1408     EnsureIsValid();
1409
1410     if ( !m_brush.IsNull() )
1411         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1412     if ( !m_pen.IsNull() )
1413         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1414
1415     bool offset = ShouldOffset();
1416
1417     if ( offset )
1418         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1419
1420     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1421     CGContextDrawPath( m_cgContext , mode );
1422
1423     if ( offset )
1424         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1425 }
1426
1427 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , int fillStyle )
1428 {
1429     if ( m_brush.IsNull() )
1430         return;
1431
1432     EnsureIsValid();
1433
1434     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1435     {
1436         CGContextSaveGState( m_cgContext );
1437         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1438         CGContextClip( m_cgContext );
1439         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1440         CGContextRestoreGState( m_cgContext);
1441     }
1442     else
1443     {
1444         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1445         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1446         if ( fillStyle == wxODDEVEN_RULE )
1447             CGContextEOFillPath( m_cgContext );
1448         else
1449             CGContextFillPath( m_cgContext );
1450     }
1451 }
1452
1453 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1454 {
1455     // we allow either setting or clearing but not replacing
1456     wxASSERT( m_cgContext == NULL || cg == NULL );
1457
1458     if ( m_cgContext )
1459     {
1460         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1461         CGContextRestoreGState( m_cgContext );
1462         CGContextRestoreGState( m_cgContext );
1463         if ( m_releaseContext )
1464             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1465         else
1466             CGContextRelease(m_cgContext);
1467     }
1468
1469
1470     m_cgContext = cg;
1471
1472     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1473     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1474     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1475     // for this one operation.
1476
1477     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1478     // can be removed.
1479     if (m_cgContext)
1480     {
1481         CGContextRetain(m_cgContext);
1482         CGContextSaveGState( m_cgContext );
1483         CGContextSaveGState( m_cgContext );
1484         m_releaseContext = false;
1485     }
1486 }
1487
1488 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1489 {
1490     if ( m_cgContext )
1491         CGContextTranslateCTM( m_cgContext, dx, dy );
1492     else
1493         m_windowTransform = CGAffineTransformTranslate(m_windowTransform,dx,dy);
1494 }
1495
1496 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1497 {
1498     if ( m_cgContext )
1499         CGContextScaleCTM( m_cgContext , xScale , yScale );
1500     else
1501         m_windowTransform = CGAffineTransformScale(m_windowTransform,xScale,yScale);
1502 }
1503
1504 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1505 {
1506     if ( m_cgContext )
1507         CGContextRotateCTM( m_cgContext , angle );
1508     else
1509         m_windowTransform = CGAffineTransformRotate(m_windowTransform,angle);
1510 }
1511
1512 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1513 {
1514     EnsureIsValid();
1515
1516     CGImageRef image = (CGImageRef)( bmp.CGImageCreate() );
1517     HIRect r = CGRectMake( x , y , w , h );
1518     if ( bmp.GetDepth() == 1 )
1519     {
1520         // is is a mask, the '1' in the mask tell where to draw the current brush
1521         if (  !m_brush.IsNull() )
1522         {
1523             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1524             {
1525                 // TODO clip to mask
1526             /*
1527                 CGContextSaveGState( m_cgContext );
1528                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1529                 CGContextClip( m_cgContext );
1530                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1531                 CGContextRestoreGState( m_cgContext);
1532             */
1533             }
1534             else
1535             {
1536                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1537                 HIViewDrawCGImage( m_cgContext , &r , image );
1538             }
1539         }
1540     }
1541     else
1542     {
1543         HIViewDrawCGImage( m_cgContext , &r , image );
1544     }
1545     CGImageRelease( image );
1546 }
1547
1548 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1549 {
1550     EnsureIsValid();
1551
1552     CGRect r = CGRectMake( 00 , 00 , w , h );
1553     CGContextSaveGState( m_cgContext );
1554     CGContextTranslateCTM( m_cgContext, x , y + h );
1555     CGContextScaleCTM( m_cgContext, 1, -1 );
1556     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1557         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1558     CGContextRestoreGState( m_cgContext );
1559 }
1560
1561 void wxMacCoreGraphicsContext::PushState()
1562 {
1563     EnsureIsValid();
1564
1565     CGContextSaveGState( m_cgContext );
1566 }
1567
1568 void wxMacCoreGraphicsContext::PopState()
1569 {
1570     EnsureIsValid();
1571
1572     CGContextRestoreGState( m_cgContext );
1573 }
1574
1575 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1576 {
1577     DrawText(str, x, y, 0.0);
1578 }
1579
1580 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1581 {
1582     if ( m_font.IsNull() )
1583         return;
1584
1585     EnsureIsValid();
1586
1587     OSStatus status = noErr;
1588     ATSUTextLayout atsuLayout;
1589     UniCharCount chars = str.length();
1590     UniChar* ubuf = NULL;
1591
1592 #if SIZEOF_WCHAR_T == 4
1593     wxMBConvUTF16 converter;
1594 #if wxUSE_UNICODE
1595     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1596     ubuf = (UniChar*) malloc( unicharlen + 2 );
1597     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1598 #else
1599     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1600     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1601     ubuf = (UniChar*) malloc( unicharlen + 2 );
1602     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1603 #endif
1604     chars = unicharlen / 2;
1605 #else
1606 #if wxUSE_UNICODE
1607     ubuf = (UniChar*) str.wc_str();
1608 #else
1609     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1610     chars = wxWcslen( wchar.data() );
1611     ubuf = (UniChar*) wchar.data();
1612 #endif
1613 #endif
1614
1615     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1616     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1617         &chars , &style , &atsuLayout );
1618
1619     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
1620
1621     status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1622     wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1623
1624     int iAngle = int( angle * RAD2DEG );
1625     if ( abs(iAngle) > 0 )
1626     {
1627         Fixed atsuAngle = IntToFixed( iAngle );
1628         ATSUAttributeTag atsuTags[] =
1629         {
1630             kATSULineRotationTag ,
1631         };
1632         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1633         {
1634             sizeof( Fixed ) ,
1635         };
1636         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1637         {
1638             &atsuAngle ,
1639         };
1640         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1641             atsuTags, atsuSizes, atsuValues );
1642     }
1643
1644     {
1645         ATSUAttributeTag atsuTags[] =
1646         {
1647             kATSUCGContextTag ,
1648         };
1649         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1650         {
1651             sizeof( CGContextRef ) ,
1652         };
1653         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1654         {
1655             &m_cgContext ,
1656         };
1657         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1658             atsuTags, atsuSizes, atsuValues );
1659     }
1660
1661     ATSUTextMeasurement textBefore, textAfter;
1662     ATSUTextMeasurement ascent, descent;
1663
1664     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1665         &textBefore , &textAfter, &ascent , &descent );
1666
1667     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1668
1669     Rect rect;
1670     x += (int)(sin(angle) * FixedToInt(ascent));
1671     y += (int)(cos(angle) * FixedToInt(ascent));
1672
1673     status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1674         IntToFixed(x) , IntToFixed(y) , &rect );
1675     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1676
1677     CGContextSaveGState(m_cgContext);
1678     CGContextTranslateCTM(m_cgContext, x, y);
1679     CGContextScaleCTM(m_cgContext, 1, -1);
1680     status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1681         IntToFixed(0) , IntToFixed(0) );
1682
1683     wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
1684
1685     CGContextRestoreGState(m_cgContext);
1686
1687     ::ATSUDisposeTextLayout(atsuLayout);
1688
1689 #if SIZEOF_WCHAR_T == 4
1690     free( ubuf );
1691 #endif
1692 }
1693
1694 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1695                             wxDouble *descent, wxDouble *externalLeading ) const
1696 {
1697     wxCHECK_RET( !m_font.IsNull(), wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
1698
1699     OSStatus status = noErr;
1700
1701     ATSUTextLayout atsuLayout;
1702     UniCharCount chars = str.length();
1703     UniChar* ubuf = NULL;
1704
1705 #if SIZEOF_WCHAR_T == 4
1706     wxMBConvUTF16 converter;
1707 #if wxUSE_UNICODE
1708     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1709     ubuf = (UniChar*) malloc( unicharlen + 2 );
1710     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1711 #else
1712     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1713     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1714     ubuf = (UniChar*) malloc( unicharlen + 2 );
1715     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1716 #endif
1717     chars = unicharlen / 2;
1718 #else
1719 #if wxUSE_UNICODE
1720     ubuf = (UniChar*) str.wc_str();
1721 #else
1722     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1723     chars = wxWcslen( wchar.data() );
1724     ubuf = (UniChar*) wchar.data();
1725 #endif
1726 #endif
1727
1728     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1729     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1730         &chars , &style , &atsuLayout );
1731
1732     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
1733
1734     ATSUTextMeasurement textBefore, textAfter;
1735     ATSUTextMeasurement textAscent, textDescent;
1736
1737     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1738         &textBefore , &textAfter, &textAscent , &textDescent );
1739
1740     if ( height )
1741         *height = FixedToInt(textAscent + textDescent);
1742     if ( descent )
1743         *descent = FixedToInt(textDescent);
1744     if ( externalLeading )
1745         *externalLeading = 0;
1746     if ( width )
1747         *width = FixedToInt(textAfter - textBefore);
1748
1749     ::ATSUDisposeTextLayout(atsuLayout);
1750 }
1751
1752 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1753 {
1754     widths.Empty();
1755     widths.Add(0, text.length());
1756
1757     if (text.empty())
1758         return;
1759
1760     ATSUTextLayout atsuLayout;
1761     UniCharCount chars = text.length();
1762     UniChar* ubuf = NULL;
1763
1764 #if SIZEOF_WCHAR_T == 4
1765     wxMBConvUTF16 converter;
1766 #if wxUSE_UNICODE
1767     size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
1768     ubuf = (UniChar*) malloc( unicharlen + 2 );
1769     converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );
1770 #else
1771     const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1772     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1773     ubuf = (UniChar*) malloc( unicharlen + 2 );
1774     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1775 #endif
1776     chars = unicharlen / 2;
1777 #else
1778 #if wxUSE_UNICODE
1779     ubuf = (UniChar*) text.wc_str();
1780 #else
1781     wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1782     chars = wxWcslen( wchar.data() );
1783     ubuf = (UniChar*) wchar.data();
1784 #endif
1785 #endif
1786
1787     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1788     ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1789         &chars , &style , &atsuLayout );
1790
1791     for ( int pos = 0; pos < (int)chars; pos ++ )
1792     {
1793         unsigned long actualNumberOfBounds = 0;
1794         ATSTrapezoid glyphBounds;
1795
1796         // We get a single bound, since the text should only require one. If it requires more, there is an issue
1797         OSStatus result;
1798         result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
1799             kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
1800         if (result != noErr || actualNumberOfBounds != 1 )
1801             return;
1802
1803         widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
1804         //unsigned char uch = s[i];
1805     }
1806
1807     ::ATSUDisposeTextLayout(atsuLayout);
1808 }
1809
1810 void * wxMacCoreGraphicsContext::GetNativeContext()
1811 {
1812     return m_cgContext;
1813 }
1814
1815 // concatenates this transform with the current transform of this context
1816 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1817 {
1818     if ( m_cgContext )
1819         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1820     else
1821         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
1822 }
1823
1824 // sets the transform of this context
1825 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
1826 {
1827     if ( m_cgContext )
1828     {
1829         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1830         transform = CGAffineTransformInvert( transform ) ;
1831         CGContextConcatCTM( m_cgContext, transform);
1832         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1833     }
1834     else
1835     {
1836         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
1837     }
1838 }
1839
1840 // gets the matrix of this context
1841 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
1842 {
1843     wxGraphicsMatrix m = CreateMatrix();
1844     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
1845         CGContextGetCTM( m_cgContext ));
1846     return m;
1847 }
1848
1849 //
1850 // Renderer
1851 //
1852
1853 //-----------------------------------------------------------------------------
1854 // wxMacCoreGraphicsRenderer declaration
1855 //-----------------------------------------------------------------------------
1856
1857 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
1858 {
1859 public :
1860     wxMacCoreGraphicsRenderer() {}
1861
1862     virtual ~wxMacCoreGraphicsRenderer() {}
1863
1864     // Context
1865
1866     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1867
1868     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1869
1870     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1871
1872     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1873
1874     virtual wxGraphicsContext * CreateMeasuringContext();
1875
1876     // Path
1877
1878     virtual wxGraphicsPath CreatePath();
1879
1880     // Matrix
1881
1882     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1883         wxDouble tx=0.0, wxDouble ty=0.0);
1884
1885
1886     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1887
1888     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1889
1890     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1891     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1892         const wxColour&c1, const wxColour&c2) ;
1893
1894     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1895     // with radius r and color cColor
1896     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1897         const wxColour &oColor, const wxColour &cColor) ;
1898
1899    // sets the font
1900     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1901
1902 private :
1903     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
1904 } ;
1905
1906 //-----------------------------------------------------------------------------
1907 // wxMacCoreGraphicsRenderer implementation
1908 //-----------------------------------------------------------------------------
1909
1910 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
1911
1912 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
1913
1914 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1915 {
1916     return &gs_MacCoreGraphicsRenderer;
1917 }
1918
1919 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc)
1920 {
1921    return new wxMacCoreGraphicsContext(this,(CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
1922 }
1923
1924 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
1925 {
1926     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
1927 }
1928
1929
1930 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
1931 {
1932     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
1933 }
1934
1935 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
1936 {
1937     return new wxMacCoreGraphicsContext(this, window );
1938 }
1939
1940 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
1941 {
1942     return new wxMacCoreGraphicsContext(this);
1943 }
1944
1945 // Path
1946
1947 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
1948 {
1949     wxGraphicsPath m;
1950     m.SetRefData( new wxMacCoreGraphicsPathData(this));
1951     return m;
1952 }
1953
1954
1955 // Matrix
1956
1957 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1958     wxDouble tx, wxDouble ty)
1959 {
1960     wxGraphicsMatrix m;
1961     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
1962     data->Set( a,b,c,d,tx,ty ) ;
1963     m.SetRefData(data);
1964     return m;
1965 }
1966
1967 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
1968 {
1969     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
1970         return wxNullGraphicsPen;
1971     else
1972     {
1973         wxGraphicsPen p;
1974         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
1975         return p;
1976     }
1977 }
1978
1979 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
1980 {
1981     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
1982         return wxNullGraphicsBrush;
1983     else
1984     {
1985         wxGraphicsBrush p;
1986         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
1987         return p;
1988     }
1989 }
1990
1991 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1992 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1993     const wxColour&c1, const wxColour&c2)
1994 {
1995     wxGraphicsBrush p;
1996     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
1997     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
1998     p.SetRefData(d);
1999     return p;
2000 }
2001
2002 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2003 // with radius r and color cColor
2004 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2005     const wxColour &oColor, const wxColour &cColor)
2006 {
2007     wxGraphicsBrush p;
2008     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2009     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2010     p.SetRefData(d);
2011     return p;
2012 }
2013
2014 // sets the font
2015 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2016 {
2017     if ( font.Ok() )
2018     {
2019         wxGraphicsFont p;
2020         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2021         return p;
2022     }
2023     else
2024         return wxNullGraphicsFont;
2025 }
2026
2027
2028
2029 #endif // wxMAC_USE_CORE_GRAPHICS