src/mac/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/dccg.cpp
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/graphics.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/dcclient.h"
  18     #include "wx/dcmemory.h"
  19     #include "wx/log.h"
  20     #include "wx/region.h"
  21     #include "wx/image.h"
  22 #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_5
  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         CGContextStrokeLineSegments( ctxRef , pts , count );
 164     }
 165
 166     virtual void Render( CGContextRef ctxRef )
 167     {
 168         switch ( m_hatch )
 169         {
 170             case wxBDIAGONAL_HATCH :
 171                 {
 172                     CGPoint pts[] =
 173                     {
 174                     { 8.0 , 0.0 } , { 0.0 , 8.0 }
 175                     };
 176                     StrokeLineSegments( ctxRef , pts , 2 );
 177                 }
 178                 break;
 179
 180             case wxCROSSDIAG_HATCH :
 181                 {
 182                     CGPoint pts[] =
 183                     {
 184                         { 0.0 , 0.0 } , { 8.0 , 8.0 } ,
 185                         { 8.0 , 0.0 } , { 0.0 , 8.0 }
 186                     };
 187                     StrokeLineSegments( ctxRef , pts , 4 );
 188                 }
 189                 break;
 190
 191             case wxFDIAGONAL_HATCH :
 192                 {
 193                     CGPoint pts[] =
 194                     {
 195                     { 0.0 , 0.0 } , { 8.0 , 8.0 }
 196                     };
 197                     StrokeLineSegments( ctxRef , pts , 2 );
 198                 }
 199                 break;
 200
 201             case wxCROSS_HATCH :
 202                 {
 203                     CGPoint pts[] =
 204                     {
 205                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 206                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 207                     };
 208                     StrokeLineSegments( ctxRef , pts , 4 );
 209                 }
 210                 break;
 211
 212             case wxHORIZONTAL_HATCH :
 213                 {
 214                     CGPoint pts[] =
 215                     {
 216                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 217                     };
 218                     StrokeLineSegments( ctxRef , pts , 2 );
 219                 }
 220                 break;
 221
 222             case wxVERTICAL_HATCH :
 223                 {
 224                     CGPoint pts[] =
 225                     {
 226                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 227                     };
 228                     StrokeLineSegments( ctxRef , pts , 2 );
 229                 }
 230                 break;
 231
 232             default:
 233                 break;
 234         }
 235     }
 236
 237 protected :
 238     virtual ~HatchPattern() {}
 239
 240     CGRect      m_imageBounds;
 241     int         m_hatch;
 242 };
 243
 244 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 245 {
 246 public:
 247     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 248     ~wxMacCoreGraphicsPenData();
 249
 250     void Init();
 251     virtual void Apply( wxGraphicsContext* context );
 252     virtual wxDouble GetWidth() { return m_width; }
 253
 254 protected :
 255     CGLineCap m_cap;
 256     wxMacCFRefHolder<CGColorRef> m_color;
 257     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 258
 259     CGLineJoin m_join;
 260     CGFloat m_width;
 261
 262     int m_count;
 263     const CGFloat *m_lengths;
 264     CGFloat *m_userLengths;
 265
 266
 267     bool m_isPattern;
 268     wxMacCFRefHolder<CGPatternRef> m_pattern;
 269     CGFloat* m_patternColorComponents;
 270 };
 271
 272 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 273     wxGraphicsObjectRefData( renderer )
 274 {
 275     Init();
 276
 277     CGFloat components[4] = { pen.GetColour().Red() / 255.0 , pen.GetColour().Green() / 255.0 ,
 278             pen.GetColour().Blue() / 255.0 , pen.GetColour().Alpha() / 255.0 } ;
 279     m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 280
 281     // TODO: * m_dc->m_scaleX
 282     m_width = pen.GetWidth();
 283     if (m_width <= 0.0)
 284         m_width = 0.1;
 285
 286     switch ( pen.GetCap() )
 287     {
 288         case wxCAP_ROUND :
 289             m_cap = kCGLineCapRound;
 290             break;
 291
 292         case wxCAP_PROJECTING :
 293             m_cap = kCGLineCapSquare;
 294             break;
 295
 296         case wxCAP_BUTT :
 297             m_cap = kCGLineCapButt;
 298             break;
 299
 300         default :
 301             m_cap = kCGLineCapButt;
 302             break;
 303     }
 304
 305     switch ( pen.GetJoin() )
 306     {
 307         case wxJOIN_BEVEL :
 308             m_join = kCGLineJoinBevel;
 309             break;
 310
 311         case wxJOIN_MITER :
 312             m_join = kCGLineJoinMiter;
 313             break;
 314
 315         case wxJOIN_ROUND :
 316             m_join = kCGLineJoinRound;
 317             break;
 318
 319         default :
 320             m_join = kCGLineJoinMiter;
 321             break;
 322     }
 323
 324     const CGFloat dashUnit = m_width < 1.0 ? 1.0 : m_width;
 325
 326     const CGFloat dotted[] = { dashUnit , dashUnit + 2.0 };
 327     static const CGFloat short_dashed[] = { 9.0 , 6.0 };
 328     static const CGFloat dashed[] = { 19.0 , 9.0 };
 329     static const CGFloat dotted_dashed[] = { 9.0 , 6.0 , 3.0 , 3.0 };
 330
 331     switch ( pen.GetStyle() )
 332     {
 333         case wxSOLID :
 334             break;
 335
 336         case wxDOT :
 337             m_count = WXSIZEOF(dotted);
 338             m_userLengths = new CGFloat[ m_count ] ;
 339             memcpy( m_userLengths, dotted, sizeof(dotted) );
 340             m_lengths = m_userLengths;
 341             break;
 342
 343         case wxLONG_DASH :
 344             m_count = WXSIZEOF(dashed);
 345             m_lengths = dashed;
 346             break;
 347
 348         case wxSHORT_DASH :
 349             m_count = WXSIZEOF(short_dashed);
 350             m_lengths = short_dashed;
 351             break;
 352
 353         case wxDOT_DASH :
 354             m_count = WXSIZEOF(dotted_dashed);
 355             m_lengths = dotted_dashed;
 356             break;
 357
 358         case wxUSER_DASH :
 359             wxDash *dashes;
 360             m_count = pen.GetDashes( &dashes );
 361             if ((dashes != NULL) && (m_count > 0))
 362             {
 363                 m_userLengths = new CGFloat[m_count];
 364                 for ( int i = 0; i < m_count; ++i )
 365                 {
 366                     m_userLengths[i] = dashes[i] * dashUnit;
 367
 368                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 369                         m_userLengths[i] = dashUnit + 2.0;
 370                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 371                         m_userLengths[i] = dashUnit;
 372                 }
 373             }
 374             m_lengths = m_userLengths;
 375             break;
 376
 377         case wxSTIPPLE :
 378             {
 379                 wxBitmap* bmp = pen.GetStipple();
 380                 if ( bmp && bmp->Ok() )
 381                 {
 382                     m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 383                     m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 384                     m_patternColorComponents = new CGFloat[1] ;
 385                     m_patternColorComponents[0] = 1.0;
 386                     m_isPattern = true;
 387                 }
 388             }
 389             break;
 390
 391         default :
 392             {
 393                 m_isPattern = true;
 394                 m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 395                 m_pattern.Set( *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 396                 m_patternColorComponents = new CGFloat[4] ;
 397                 m_patternColorComponents[0] = pen.GetColour().Red() / 255.0;
 398                 m_patternColorComponents[1] = pen.GetColour().Green() / 255.0;
 399                 m_patternColorComponents[2] = pen.GetColour().Blue() / 255.0;
 400                 m_patternColorComponents[3] =  pen.GetColour().Alpha() / 255.0;
 401             }
 402             break;
 403     }
 404     if ((m_lengths != NULL) && (m_count > 0))
 405     {
 406         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 407         m_cap = kCGLineCapButt;
 408     }
 409 }
 410
 411 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 412 {
 413     delete[] m_userLengths;
 414     delete[] m_patternColorComponents;
 415 }
 416
 417 void wxMacCoreGraphicsPenData::Init()
 418 {
 419     m_lengths = NULL;
 420     m_userLengths = NULL;
 421     m_width = 0;
 422     m_count = 0;
 423     m_patternColorComponents = NULL;
 424     m_isPattern = false;
 425 }
 426
 427 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 428 {
 429     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 430     CGContextSetLineWidth( cg , m_width );
 431     CGContextSetLineJoin( cg , m_join );
 432
 433     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 434     CGContextSetLineCap( cg , m_cap );
 435
 436     if ( m_isPattern )
 437     {
 438         CGAffineTransform matrix = CGContextGetCTM( cg );
 439         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 440         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 441         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 442     }
 443     else
 444     {
 445         if ( context->GetLogicalFunction() == wxINVERT || context->GetLogicalFunction() == wxXOR )
 446         {
 447             CGContextSetRGBStrokeColor( cg , 1.0, 1.0 , 1.0, 1.0 );
 448         }
 449         else
 450             CGContextSetStrokeColorWithColor( cg , m_color );
 451     }
 452 }
 453
 454 //
 455 // Brush
 456 //
 457
 458 static const char *gs_stripedback_xpm[] = {
 459 /* columns rows colors chars-per-pixel */
 460 "4 4 2 1",
 461 ". c #F0F0F0",
 462 "X c #ECECEC",
 463 /* pixels */
 464 "....",
 465 "....",
 466 "XXXX",
 467 "XXXX"
 468 };
 469
 470 wxBitmap gs_stripedback_bmp( wxImage( (const char* const* ) gs_stripedback_xpm  ), -1 ) ;
 471
 472 wxMacCoreGraphicsColour::~wxMacCoreGraphicsColour()
 473 {
 474     delete[] m_patternColorComponents;
 475 }
 476
 477 void wxMacCoreGraphicsColour::Init()
 478 {
 479     m_isPattern = false;
 480     m_patternColorComponents = NULL;
 481 }
 482
 483 void wxMacCoreGraphicsColour::Apply( CGContextRef cgContext )
 484 {
 485     if ( m_isPattern )
 486     {
 487         CGAffineTransform matrix = CGContextGetCTM( cgContext );
 488         CGContextSetPatternPhase( cgContext, CGSizeMake(matrix.tx, matrix.ty) );
 489         CGContextSetFillColorSpace( cgContext , m_colorSpace );
 490         CGContextSetFillPattern( cgContext, m_pattern , m_patternColorComponents );
 491     }
 492     else
 493     {
 494         CGContextSetFillColorWithColor( cgContext, m_color );
 495     }
 496 }
 497
 498 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour()
 499 {
 500     Init();
 501 }
 502
 503 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
 504 {
 505     Init();
 506     if ( brush.GetStyle() == wxSOLID )
 507     {
 508         if ( brush.MacGetBrushKind() == kwxMacBrushTheme )
 509         {
 510             CGColorRef color ;
 511             HIThemeBrushCreateCGColor( brush.MacGetTheme(), &color );
 512             m_color.Set( color ) ;
 513         }
 514         else
 515         {
 516             CGFloat components[4] = { brush.GetColour().Red() / 255.0 , brush.GetColour().Green() / 255.0 ,
 517                 brush.GetColour().Blue() / 255.0 , brush.GetColour().Alpha() / 255.0 } ;
 518             m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 519         }
 520     }
 521     else if ( brush.IsHatch() )
 522     {
 523         m_isPattern = true;
 524         m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 525         m_pattern.Set( *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 526
 527         m_patternColorComponents = new CGFloat[4] ;
 528         m_patternColorComponents[0] = brush.GetColour().Red() / 255.0;
 529         m_patternColorComponents[1] = brush.GetColour().Green() / 255.0;
 530         m_patternColorComponents[2] = brush.GetColour().Blue() / 255.0;
 531         m_patternColorComponents[3] = brush.GetColour().Alpha() / 255.0;
 532     }
 533     else
 534     {
 535         // now brush is a bitmap
 536         wxBitmap* bmp = brush.GetStipple();
 537         if ( bmp && bmp->Ok() )
 538         {
 539             m_isPattern = true;
 540             m_patternColorComponents = new CGFloat[1] ;
 541             m_patternColorComponents[0] = 1.0;
 542             m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 543             m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 544         }
 545     }
 546 }
 547
 548 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 549 {
 550 public:
 551     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 552     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 553     ~wxMacCoreGraphicsBrushData ();
 554
 555     virtual void Apply( wxGraphicsContext* context );
 556     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 557         const wxColour&c1, const wxColour&c2 );
 558     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 559     const wxColour &oColor, const wxColour &cColor );
 560
 561     virtual bool IsShading() { return m_isShading; }
 562     CGShadingRef GetShading() { return m_shading; }
 563 protected:
 564     CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
 565     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 566     virtual void Init();
 567
 568     wxMacCoreGraphicsColour m_cgColor;
 569
 570     bool m_isShading;
 571     CGFunctionRef m_gradientFunction;
 572     CGShadingRef m_shading;
 573     CGFloat *m_gradientComponents;
 574 };
 575
 576 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 577 {
 578     Init();
 579 }
 580
 581 void wxMacCoreGraphicsBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 582         const wxColour&c1, const wxColour&c2 )
 583 {
 584     m_gradientFunction = CreateGradientFunction( c1, c2 );
 585     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake(x1,y1), CGPointMake(x2,y2), m_gradientFunction, true, true ) ;
 586     m_isShading = true ;
 587 }
 588
 589 void wxMacCoreGraphicsBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 590     const wxColour &oColor, const wxColour &cColor )
 591 {
 592     m_gradientFunction = CreateGradientFunction( oColor, cColor );
 593     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake(xo,yo), 0, CGPointMake(xc,yc), radius, m_gradientFunction, true, true ) ;
 594     m_isShading = true ;
 595 }
 596
 597 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer ),
 598     m_cgColor( brush )
 599 {
 600     Init();
 601
 602 }
 603
 604 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 605 {
 606     if ( m_shading )
 607         CGShadingRelease(m_shading);
 608
 609     if( m_gradientFunction )
 610         CGFunctionRelease(m_gradientFunction);
 611
 612     delete[] m_gradientComponents;
 613 }
 614
 615 void wxMacCoreGraphicsBrushData::Init()
 616 {
 617     m_gradientFunction = NULL;
 618     m_shading = NULL;
 619     m_gradientComponents = NULL;
 620     m_isShading = false;
 621 }
 622
 623 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 624 {
 625     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 626
 627     if ( m_isShading )
 628     {
 629         // nothing to set as shades are processed by clipping using the path and filling
 630     }
 631     else
 632     {
 633         m_cgColor.Apply( cg );
 634     }
 635 }
 636
 637 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 638 {
 639     CGFloat* colors = (CGFloat*) info ;
 640     CGFloat f = *in;
 641     for( int i = 0 ; i < 4 ; ++i )
 642     {
 643         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 644     }
 645 }
 646
 647 CGFunctionRef wxMacCoreGraphicsBrushData::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
 648 {
 649     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 650     static const CGFloat input_value_range [2] = { 0, 1 };
 651     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 652     m_gradientComponents = new CGFloat[8] ;
 653     m_gradientComponents[0] = c1.Red() / 255.0;
 654     m_gradientComponents[1] = c1.Green() / 255.0;
 655     m_gradientComponents[2] = c1.Blue() / 255.0;
 656     m_gradientComponents[3] = c1.Alpha() / 255.0;
 657     m_gradientComponents[4] = c2.Red() / 255.0;
 658     m_gradientComponents[5] = c2.Green() / 255.0;
 659     m_gradientComponents[6] = c2.Blue() / 255.0;
 660     m_gradientComponents[7] = c2.Alpha() / 255.0;
 661
 662     return CGFunctionCreate ( m_gradientComponents,  1,
 663                             input_value_range,
 664                             4,
 665                             output_value_ranges,
 666                             &callbacks);
 667 }
 668
 669 //
 670 // Font
 671 //
 672
 673 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 674 {
 675 public:
 676     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 677     ~wxMacCoreGraphicsFontData();
 678
 679     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 680 private :
 681     ATSUStyle m_macATSUIStyle;
 682 };
 683
 684 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 685 {
 686     m_macATSUIStyle = NULL;
 687
 688     OSStatus status;
 689
 690     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 691
 692     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 693
 694     // we need the scale here ...
 695
 696     Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
 697     RGBColor atsuColor = MAC_WXCOLORREF( col.GetPixel() );
 698     ATSUAttributeTag atsuTags[] =
 699     {
 700             kATSUSizeTag ,
 701             kATSUColorTag ,
 702     };
 703     ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 704     {
 705             sizeof( Fixed ) ,
 706             sizeof( RGBColor ) ,
 707     };
 708     ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 709     {
 710             &atsuSize ,
 711             &atsuColor ,
 712     };
 713
 714     status = ::ATSUSetAttributes(
 715         m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
 716         atsuTags, atsuSizes, atsuValues);
 717
 718     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 719 }
 720
 721 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 722 {
 723     if ( m_macATSUIStyle )
 724     {
 725         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 726         m_macATSUIStyle = NULL;
 727     }
 728 }
 729
 730 //
 731 // Graphics Matrix
 732 //
 733
 734 //-----------------------------------------------------------------------------
 735 // wxMacCoreGraphicsMatrix declaration
 736 //-----------------------------------------------------------------------------
 737
 738 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
 739 {
 740 public :
 741     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
 742
 743     virtual ~wxMacCoreGraphicsMatrixData() ;
 744
 745     virtual wxGraphicsObjectRefData *Clone() const ;
 746
 747     // concatenates the matrix
 748     virtual void Concat( const wxGraphicsMatrixData *t );
 749
 750     // sets the matrix to the respective values
 751     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 752         wxDouble tx=0.0, wxDouble ty=0.0);
 753
 754     // gets the component valuess of the matrix
 755     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 756                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 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 wxGraphicsMatrixData* t) const ;
 763
 764     // return true if this is the identity matrix
 765     virtual bool IsIdentity() const;
 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 ) const;
 786
 787     // applies the matrix except for translations
 788     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 789
 790     // returns the native representation
 791     virtual void * GetNativeMatrix() const;
 792
 793 private :
 794     CGAffineTransform m_matrix;
 795 } ;
 796
 797 //-----------------------------------------------------------------------------
 798 // wxMacCoreGraphicsMatrix implementation
 799 //-----------------------------------------------------------------------------
 800
 801 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
 802 {
 803 }
 804
 805 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
 806 {
 807 }
 808
 809 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 810 {
 811     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
 812     m->m_matrix = m_matrix ;
 813     return m;
 814 }
 815
 816 // concatenates the matrix
 817 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 818 {
 819     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 820 }
 821
 822 // sets the matrix to the respective values
 823 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 824     wxDouble tx, wxDouble ty)
 825 {
 826     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 827 }
 828
 829 // gets the component valuess of the matrix
 830 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 831                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
 832 {
 833     if (a)  *a = m_matrix.a;
 834     if (b)  *b = m_matrix.b;
 835     if (c)  *c = m_matrix.c;
 836     if (d)  *d = m_matrix.d;
 837     if (tx) *tx= m_matrix.tx;
 838     if (ty) *ty= m_matrix.ty;
 839 }
 840
 841 // makes this the inverse matrix
 842 void wxMacCoreGraphicsMatrixData::Invert()
 843 {
 844     m_matrix = CGAffineTransformInvert( m_matrix );
 845 }
 846
 847 // returns true if the elements of the transformation matrix are equal ?
 848 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 849 {
 850     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 851 }
 852
 853 // return true if this is the identity matrix
 854 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
 855 {
 856     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
 857         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
 858 }
 859
 860 //
 861 // transformation
 862 //
 863
 864 // add the translation to this matrix
 865 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
 866 {
 867     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
 868 }
 869
 870 // add the scale to this matrix
 871 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 872 {
 873     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
 874 }
 875
 876 // add the rotation to this matrix (radians)
 877 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
 878 {
 879     m_matrix = CGAffineTransformRotate( m_matrix, angle);
 880 }
 881
 882 //
 883 // apply the transforms
 884 //
 885
 886 // applies that matrix to the point
 887 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
 888 {
 889     CGPoint pt = CGPointApplyAffineTransform( CGPointMake(*x,*y), m_matrix);
 890
 891     *x = pt.x;
 892     *y = pt.y;
 893 }
 894
 895 // applies the matrix except for translations
 896 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
 897 {
 898     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake(*dx,*dy) , m_matrix );
 899     *dx = sz.width;
 900     *dy = sz.height;
 901 }
 902
 903 // returns the native representation
 904 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
 905 {
 906     return (void*) &m_matrix;
 907 }
 908
 909 //
 910 // Graphics Path
 911 //
 912
 913 //-----------------------------------------------------------------------------
 914 // wxMacCoreGraphicsPath declaration
 915 //-----------------------------------------------------------------------------
 916
 917 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
 918 {
 919 public :
 920     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
 921
 922     ~wxMacCoreGraphicsPathData();
 923
 924     virtual wxGraphicsObjectRefData *Clone() const;
 925
 926     // begins a new subpath at (x,y)
 927     virtual void MoveToPoint( wxDouble x, wxDouble y );
 928
 929     // adds a straight line from the current point to (x,y)
 930     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 931
 932     // adds a cubic Bezier curve from the current point, using two control points and an end point
 933     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 934
 935     // closes the current sub-path
 936     virtual void CloseSubpath();
 937
 938     // gets the last point of the current path, (0,0) if not yet set
 939     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 940
 941     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 942     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
 943
 944     //
 945     // These are convenience functions which - if not available natively will be assembled
 946     // using the primitives from above
 947     //
 948
 949     // adds a quadratic Bezier curve from the current point, using a control point and an end point
 950     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
 951
 952     // appends a rectangle as a new closed subpath
 953     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 954
 955     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 956     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 957
 958     // 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)
 959     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 960
 961     // adds another path
 962     virtual void AddPath( const wxGraphicsPathData* path );
 963
 964     // returns the native path
 965     virtual void * GetNativePath() const { return m_path; }
 966
 967     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 968     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
 969
 970     // transforms each point of this path by the matrix
 971     virtual void Transform( const wxGraphicsMatrixData* matrix );
 972
 973     // gets the bounding box enclosing all points (possibly including control points)
 974     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
 975
 976     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
 977 private :
 978     CGMutablePathRef m_path;
 979 };
 980
 981 //-----------------------------------------------------------------------------
 982 // wxMacCoreGraphicsPath implementation
 983 //-----------------------------------------------------------------------------
 984
 985 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
 986 {
 987     if ( path )
 988         m_path = path;
 989     else
 990         m_path = CGPathCreateMutable();
 991 }
 992
 993 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
 994 {
 995     CGPathRelease( m_path );
 996 }
 997
 998 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
 999 {
1000     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1001     return clone ;
1002 }
1003
1004
1005 // opens (starts) a new subpath
1006 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1007 {
1008     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
1009 }
1010
1011 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1012 {
1013     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
1014 }
1015
1016 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1017 {
1018     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
1019 }
1020
1021 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1022 {
1023     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
1024 }
1025
1026 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1027 {
1028     CGRect cgRect = { { x , y } , { w , h } };
1029     CGPathAddRect( m_path , NULL , cgRect );
1030 }
1031
1032 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1033 {
1034     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1035 }
1036
1037 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1038 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1039 {
1040     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1041     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1042 }
1043
1044 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1045 {
1046     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1047 }
1048
1049 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1050 {
1051     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1052 }
1053
1054 // closes the current subpath
1055 void wxMacCoreGraphicsPathData::CloseSubpath()
1056 {
1057     CGPathCloseSubpath( m_path );
1058 }
1059
1060 // gets the last point of the current path, (0,0) if not yet set
1061 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1062 {
1063     CGPoint p = CGPathGetCurrentPoint( m_path );
1064     *x = p.x;
1065     *y = p.y;
1066 }
1067
1068 // transforms each point of this path by the matrix
1069 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1070 {
1071     CGMutablePathRef p = CGPathCreateMutable() ;
1072     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1073     CGPathRelease( m_path );
1074     m_path = p;
1075 }
1076
1077 // gets the bounding box enclosing all points (possibly including control points)
1078 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1079 {
1080     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1081     *x = bounds.origin.x;
1082     *y = bounds.origin.y;
1083     *w = bounds.size.width;
1084     *h = bounds.size.height;
1085 }
1086
1087 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, int fillStyle) const
1088 {
1089     return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1090 }
1091
1092 //
1093 // Graphics Context
1094 //
1095
1096 //-----------------------------------------------------------------------------
1097 // wxMacCoreGraphicsContext declaration
1098 //-----------------------------------------------------------------------------
1099
1100 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1101 {
1102 public:
1103     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1104
1105     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1106
1107     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1108
1109     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1110
1111     wxMacCoreGraphicsContext();
1112
1113     ~wxMacCoreGraphicsContext();
1114
1115     void Init();
1116
1117     // returns the size of the graphics context in device coordinates
1118     virtual void GetSize( wxDouble* width, wxDouble* height);
1119
1120     virtual void StartPage( wxDouble width, wxDouble height );
1121
1122     virtual void EndPage();
1123
1124     virtual void Flush();
1125
1126     // push the current state of the context, ie the transformation matrix on a stack
1127     virtual void PushState();
1128
1129     // pops a stored state from the stack
1130     virtual void PopState();
1131
1132     // clips drawings to the region
1133     virtual void Clip( const wxRegion &region );
1134
1135     // clips drawings to the rect
1136     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1137
1138     // resets the clipping to original extent
1139     virtual void ResetClip();
1140
1141     virtual void * GetNativeContext();
1142
1143     bool SetLogicalFunction( int function );
1144     //
1145     // transformation
1146     //
1147
1148     // translate
1149     virtual void Translate( wxDouble dx , wxDouble dy );
1150
1151     // scale
1152     virtual void Scale( wxDouble xScale , wxDouble yScale );
1153
1154     // rotate (radians)
1155     virtual void Rotate( wxDouble angle );
1156
1157     // concatenates this transform with the current transform of this context
1158     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1159
1160     // sets the transform of this context
1161     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1162
1163     // gets the matrix of this context
1164     virtual wxGraphicsMatrix GetTransform() const;
1165     //
1166     // setting the paint
1167     //
1168
1169     // strokes along a path with the current pen
1170     virtual void StrokePath( const wxGraphicsPath &path );
1171
1172     // fills a path with the current brush
1173     virtual void FillPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1174
1175     // draws a path by first filling and then stroking
1176     virtual void DrawPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1177
1178     virtual bool ShouldOffset() const
1179     {
1180         int penwidth = 0 ;
1181         if ( !m_pen.IsNull() )
1182         {
1183             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1184             if ( penwidth == 0 )
1185                 penwidth = 1;
1186         }
1187         return ( penwidth % 2 ) == 1;
1188     }
1189     //
1190     // text
1191     //
1192
1193     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1194
1195     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1196
1197     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1198         wxDouble *descent, wxDouble *externalLeading ) const;
1199
1200     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1201
1202     //
1203     // image support
1204     //
1205
1206     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1207
1208     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1209
1210     void SetNativeContext( CGContextRef cg );
1211
1212     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1213     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1214
1215 private:
1216     void EnsureIsValid();
1217
1218     CGContextRef m_cgContext;
1219     WindowRef m_windowRef;
1220     bool m_releaseContext;
1221     CGAffineTransform m_windowTransform;
1222     wxDouble m_width;
1223     wxDouble m_height;
1224
1225     wxMacCFRefHolder<HIShapeRef> m_clipRgn;
1226 };
1227
1228 //-----------------------------------------------------------------------------
1229 // device context implementation
1230 //
1231 // more and more of the dc functionality should be implemented by calling
1232 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1233 // also coordinate conversions should be moved to native matrix ops
1234 //-----------------------------------------------------------------------------
1235
1236 // we always stock two context states, one at entry, to be able to preserve the
1237 // state we were called with, the other one after changing to HI Graphics orientation
1238 // (this one is used for getting back clippings etc)
1239
1240 //-----------------------------------------------------------------------------
1241 // wxMacCoreGraphicsContext implementation
1242 //-----------------------------------------------------------------------------
1243
1244 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1245
1246 class wxQuartzOffsetHelper
1247 {
1248 public :
1249     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1250     {
1251         m_cg = cg;
1252         m_offset = offset;
1253         if ( m_offset )
1254             CGContextTranslateCTM( m_cg, 0.5, 0.5 );
1255     }
1256     ~wxQuartzOffsetHelper( )
1257     {
1258         if ( m_offset )
1259             CGContextTranslateCTM( m_cg, -0.5, -0.5 );
1260     }
1261 public :
1262     CGContextRef m_cg;
1263     bool m_offset;
1264 } ;
1265
1266 void wxMacCoreGraphicsContext::Init()
1267 {
1268     m_cgContext = NULL;
1269     m_releaseContext = false;
1270     m_windowRef = NULL;
1271     m_width = 0;
1272     m_height = 0;
1273
1274     HIRect r = CGRectMake(0,0,0,0);
1275     m_clipRgn.Set(HIShapeCreateWithRect(&r));
1276 }
1277
1278 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1279 {
1280     Init();
1281     SetNativeContext(cgcontext);
1282     m_width = width;
1283     m_height = height;
1284 }
1285
1286 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1287 {
1288     Init();
1289     m_windowRef = window;
1290 }
1291
1292 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1293 {
1294     Init();
1295     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1296     int originX , originY;
1297     originX = originY = 0;
1298     window->MacWindowToRootWindow( &originX , &originY );
1299     Rect bounds;
1300     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1301
1302     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1303     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1304     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1305 }
1306
1307 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1308 {
1309     Init();
1310 }
1311
1312 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1313 {
1314     Init();
1315     wxLogDebug(wxT("Illegal Constructor called"));
1316 }
1317
1318 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1319 {
1320     SetNativeContext(NULL);
1321 }
1322
1323 void wxMacCoreGraphicsContext::GetSize( wxDouble* width, wxDouble* height)
1324 {
1325     *width = m_width;
1326     *height = m_height;
1327 }
1328
1329
1330 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1331 {
1332     CGRect r;
1333     if ( width != 0 && height != 0)
1334         r = CGRectMake( 0 , 0 , width  , height );
1335     else
1336         r = CGRectMake( 0 , 0 , m_width  , m_height );
1337
1338     CGContextBeginPage(m_cgContext,  &r );
1339 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1340 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1341 }
1342
1343 void wxMacCoreGraphicsContext::EndPage()
1344 {
1345     CGContextEndPage(m_cgContext);
1346 }
1347
1348 void wxMacCoreGraphicsContext::Flush()
1349 {
1350     CGContextFlush(m_cgContext);
1351 }
1352
1353 void wxMacCoreGraphicsContext::EnsureIsValid()
1354 {
1355     if ( !m_cgContext )
1356     {
1357         OSStatus status =
1358 #ifndef __LP64__
1359             QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1360 #else
1361             paramErr;
1362 #endif
1363         wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
1364
1365         CGContextConcatCTM( m_cgContext, m_windowTransform );
1366                 CGContextSaveGState( m_cgContext );
1367                 m_releaseContext = true;
1368                 if ( !HIShapeIsEmpty(m_clipRgn) )
1369                 {
1370             // the clip region is in device coordinates, so we convert this again to user coordinates
1371             wxMacCFRefHolder<HIMutableShapeRef> hishape ;
1372             hishape.Set( HIShapeCreateMutableCopy( m_clipRgn ) );
1373             CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1374             HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1375                         HIShapeReplacePathInCGContext( hishape, m_cgContext );
1376                         CGContextClip( m_cgContext );
1377                 }
1378                 CGContextSaveGState( m_cgContext );
1379         }
1380 }
1381
1382 // TODO test whether the private CGContextSetCompositeOperation works under 10.3 (using NSCompositingModes)
1383
1384 bool wxMacCoreGraphicsContext::SetLogicalFunction( int function )
1385 {
1386     if (m_logicalFunction == function)
1387         return true;
1388
1389     EnsureIsValid();
1390
1391     bool retval = false;
1392
1393     if ( function == wxCOPY )
1394     {
1395         retval = true;
1396         CGContextSetBlendMode( m_cgContext, kCGBlendModeNormal );
1397     }
1398     else if ( function == wxINVERT || function == wxXOR )
1399     {
1400         // change color to white
1401         CGContextSetBlendMode( m_cgContext, kCGBlendModeExclusion );
1402         CGContextSetShouldAntialias( m_cgContext, false );
1403         retval = true;
1404     }
1405
1406     if (retval)
1407         m_logicalFunction = function;
1408     return retval ;
1409 }
1410
1411 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1412 {
1413     if( m_cgContext )
1414     {
1415         HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
1416         HIShapeReplacePathInCGContext( shape, m_cgContext );
1417         CGContextClip( m_cgContext );
1418         CFRelease( shape );
1419     }
1420     else
1421     {
1422         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1423         // to regions we try at least to have correct translations
1424         wxMacCFRefHolder<HIShapeRef> hishape ;
1425         hishape.Set( HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() ));
1426         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( hishape );
1427
1428         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1429         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1430         m_clipRgn.Set(mutableShape);
1431     }
1432 }
1433
1434 // clips drawings to the rect
1435 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1436 {
1437     HIRect r = CGRectMake( x , y , w , h );
1438     if ( m_cgContext )
1439     {
1440         CGContextClipToRect( m_cgContext, r );
1441     }
1442     else
1443     {
1444         // the clipping itself must be stored as device coordinates, otherwise
1445         // we cannot apply it back correctly
1446         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1447         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1448     }
1449 }
1450
1451     // resets the clipping to original extent
1452 void wxMacCoreGraphicsContext::ResetClip()
1453 {
1454     if ( m_cgContext )
1455     {
1456         // there is no way for clearing the clip, we can only revert to the stored
1457         // state, but then we have to make sure everything else is NOT restored
1458         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1459         CGContextRestoreGState( m_cgContext );
1460         CGContextSaveGState( m_cgContext );
1461         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1462         transformNew = CGAffineTransformInvert( transformNew ) ;
1463         CGContextConcatCTM( m_cgContext, transformNew);
1464         CGContextConcatCTM( m_cgContext, transform);
1465     }
1466     else
1467     {
1468         HIRect r = CGRectMake(0,0,0,0);
1469         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1470     }
1471 }
1472
1473 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1474 {
1475     if ( m_pen.IsNull() )
1476         return ;
1477
1478     EnsureIsValid();
1479
1480     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1481
1482     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1483     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1484     CGContextStrokePath( m_cgContext );
1485 }
1486
1487 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , int fillStyle )
1488 {
1489     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1490     {
1491         // when using shading, we cannot draw pen and brush at the same time
1492         // revert to the base implementation of first filling and then stroking
1493         wxGraphicsContext::DrawPath( path, fillStyle );
1494         return;
1495     }
1496
1497     CGPathDrawingMode mode = kCGPathFill ;
1498     if ( m_brush.IsNull() )
1499     {
1500         if ( m_pen.IsNull() )
1501             return;
1502         else
1503             mode = kCGPathStroke;
1504     }
1505     else
1506     {
1507         if ( m_pen.IsNull() )
1508         {
1509             if ( fillStyle == wxODDEVEN_RULE )
1510                 mode = kCGPathEOFill;
1511             else
1512                 mode = kCGPathFill;
1513         }
1514         else
1515         {
1516             if ( fillStyle == wxODDEVEN_RULE )
1517                 mode = kCGPathEOFillStroke;
1518             else
1519                 mode = kCGPathFillStroke;
1520         }
1521     }
1522
1523     EnsureIsValid();
1524
1525     if ( !m_brush.IsNull() )
1526         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1527     if ( !m_pen.IsNull() )
1528         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1529
1530     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1531
1532     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1533     CGContextDrawPath( m_cgContext , mode );
1534 }
1535
1536 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , int fillStyle )
1537 {
1538     if ( m_brush.IsNull() )
1539         return;
1540
1541     EnsureIsValid();
1542
1543     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1544     {
1545         CGContextSaveGState( m_cgContext );
1546         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1547         CGContextClip( m_cgContext );
1548         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1549         CGContextRestoreGState( m_cgContext);
1550     }
1551     else
1552     {
1553         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1554         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1555         if ( fillStyle == wxODDEVEN_RULE )
1556             CGContextEOFillPath( m_cgContext );
1557         else
1558             CGContextFillPath( m_cgContext );
1559     }
1560 }
1561
1562 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1563 {
1564     // we allow either setting or clearing but not replacing
1565     wxASSERT( m_cgContext == NULL || cg == NULL );
1566
1567     if ( m_cgContext )
1568     {
1569         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1570         CGContextRestoreGState( m_cgContext );
1571         CGContextRestoreGState( m_cgContext );
1572         if ( m_releaseContext )
1573         {
1574 #ifndef __LP64__
1575             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1576 #endif
1577         }
1578         else
1579             CGContextRelease(m_cgContext);
1580     }
1581
1582
1583     m_cgContext = cg;
1584
1585     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1586     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1587     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1588     // for this one operation.
1589
1590     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1591     // can be removed.
1592     if (m_cgContext)
1593     {
1594         CGContextRetain(m_cgContext);
1595         CGContextSaveGState( m_cgContext );
1596         CGContextSaveGState( m_cgContext );
1597         m_releaseContext = false;
1598     }
1599 }
1600
1601 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1602 {
1603     if ( m_cgContext )
1604         CGContextTranslateCTM( m_cgContext, dx, dy );
1605     else
1606         m_windowTransform = CGAffineTransformTranslate(m_windowTransform,dx,dy);
1607 }
1608
1609 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1610 {
1611     if ( m_cgContext )
1612         CGContextScaleCTM( m_cgContext , xScale , yScale );
1613     else
1614         m_windowTransform = CGAffineTransformScale(m_windowTransform,xScale,yScale);
1615 }
1616
1617 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1618 {
1619     if ( m_cgContext )
1620         CGContextRotateCTM( m_cgContext , angle );
1621     else
1622         m_windowTransform = CGAffineTransformRotate(m_windowTransform,angle);
1623 }
1624
1625 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1626 {
1627     EnsureIsValid();
1628
1629     CGImageRef image = (CGImageRef)( bmp.CGImageCreate() );
1630     HIRect r = CGRectMake( x , y , w , h );
1631     if ( bmp.GetDepth() == 1 )
1632     {
1633         // is is a mask, the '1' in the mask tell where to draw the current brush
1634         if (  !m_brush.IsNull() )
1635         {
1636             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1637             {
1638                 // TODO clip to mask
1639             /*
1640                 CGContextSaveGState( m_cgContext );
1641                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1642                 CGContextClip( m_cgContext );
1643                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1644                 CGContextRestoreGState( m_cgContext);
1645             */
1646             }
1647             else
1648             {
1649                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1650                 HIViewDrawCGImage( m_cgContext , &r , image );
1651             }
1652         }
1653     }
1654     else
1655     {
1656         HIViewDrawCGImage( m_cgContext , &r , image );
1657     }
1658     CGImageRelease( image );
1659 }
1660
1661 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1662 {
1663     EnsureIsValid();
1664
1665     CGRect r = CGRectMake( 00 , 00 , w , h );
1666     CGContextSaveGState( m_cgContext );
1667     CGContextTranslateCTM( m_cgContext, x , y + h );
1668     CGContextScaleCTM( m_cgContext, 1, -1 );
1669     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1670         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1671     CGContextRestoreGState( m_cgContext );
1672 }
1673
1674 void wxMacCoreGraphicsContext::PushState()
1675 {
1676     EnsureIsValid();
1677
1678     CGContextSaveGState( m_cgContext );
1679 }
1680
1681 void wxMacCoreGraphicsContext::PopState()
1682 {
1683     EnsureIsValid();
1684
1685     CGContextRestoreGState( m_cgContext );
1686 }
1687
1688 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1689 {
1690     DrawText(str, x, y, 0.0);
1691 }
1692
1693 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1694 {
1695     if ( m_font.IsNull() )
1696         return;
1697
1698     EnsureIsValid();
1699
1700     OSStatus status = noErr;
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 rotated text") );
1733
1734     status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1735     wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1736
1737     int iAngle = int( angle * RAD2DEG );
1738     if ( abs(iAngle) > 0 )
1739     {
1740         Fixed atsuAngle = IntToFixed( iAngle );
1741         ATSUAttributeTag atsuTags[] =
1742         {
1743             kATSULineRotationTag ,
1744         };
1745         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1746         {
1747             sizeof( Fixed ) ,
1748         };
1749         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1750         {
1751             &atsuAngle ,
1752         };
1753         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1754             atsuTags, atsuSizes, atsuValues );
1755     }
1756
1757     {
1758         ATSUAttributeTag atsuTags[] =
1759         {
1760             kATSUCGContextTag ,
1761         };
1762         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1763         {
1764             sizeof( CGContextRef ) ,
1765         };
1766         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1767         {
1768             &m_cgContext ,
1769         };
1770         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1771             atsuTags, atsuSizes, atsuValues );
1772     }
1773
1774     ATSUTextMeasurement textBefore, textAfter;
1775     ATSUTextMeasurement ascent, descent;
1776
1777     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1778         &textBefore , &textAfter, &ascent , &descent );
1779
1780     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1781
1782     Rect rect;
1783     x += (int)(sin(angle) * FixedToInt(ascent));
1784     y += (int)(cos(angle) * FixedToInt(ascent));
1785
1786     status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1787         IntToFixed(x) , IntToFixed(y) , &rect );
1788     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1789
1790     CGContextSaveGState(m_cgContext);
1791     CGContextTranslateCTM(m_cgContext, x, y);
1792     CGContextScaleCTM(m_cgContext, 1, -1);
1793     status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1794         IntToFixed(0) , IntToFixed(0) );
1795
1796     wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
1797
1798     CGContextRestoreGState(m_cgContext);
1799
1800     ::ATSUDisposeTextLayout(atsuLayout);
1801
1802 #if SIZEOF_WCHAR_T == 4
1803     free( ubuf );
1804 #endif
1805 }
1806
1807 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1808                             wxDouble *descent, wxDouble *externalLeading ) const
1809 {
1810     wxCHECK_RET( !m_font.IsNull(), wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
1811
1812     if ( width )
1813         *width = 0;
1814     if ( height )
1815         *height = 0;
1816     if ( descent )
1817         *descent = 0;
1818     if ( externalLeading )
1819         *externalLeading = 0;
1820
1821     if (str.empty())
1822         return;
1823
1824     OSStatus status = noErr;
1825
1826     ATSUTextLayout atsuLayout;
1827     UniCharCount chars = str.length();
1828     UniChar* ubuf = NULL;
1829
1830 #if SIZEOF_WCHAR_T == 4
1831     wxMBConvUTF16 converter;
1832 #if wxUSE_UNICODE
1833     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1834     ubuf = (UniChar*) malloc( unicharlen + 2 );
1835     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1836 #else
1837     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1838     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1839     ubuf = (UniChar*) malloc( unicharlen + 2 );
1840     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1841 #endif
1842     chars = unicharlen / 2;
1843 #else
1844 #if wxUSE_UNICODE
1845     ubuf = (UniChar*) str.wc_str();
1846 #else
1847     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1848     chars = wxWcslen( wchar.data() );
1849     ubuf = (UniChar*) wchar.data();
1850 #endif
1851 #endif
1852
1853     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1854     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1855         &chars , &style , &atsuLayout );
1856
1857     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
1858
1859     ATSUTextMeasurement textBefore, textAfter;
1860     ATSUTextMeasurement textAscent, textDescent;
1861
1862     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1863         &textBefore , &textAfter, &textAscent , &textDescent );
1864
1865     if ( height )
1866         *height = FixedToInt(textAscent + textDescent);
1867     if ( descent )
1868         *descent = FixedToInt(textDescent);
1869     if ( externalLeading )
1870         *externalLeading = 0;
1871     if ( width )
1872         *width = FixedToInt(textAfter - textBefore);
1873
1874     ::ATSUDisposeTextLayout(atsuLayout);
1875 #if SIZEOF_WCHAR_T == 4
1876     free( ubuf ) ;
1877 #endif
1878 }
1879
1880 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1881 {
1882     widths.Empty();
1883     widths.Add(0, text.length());
1884
1885     if (text.empty())
1886         return;
1887
1888     ATSUTextLayout atsuLayout;
1889     UniCharCount chars = text.length();
1890     UniChar* ubuf = NULL;
1891
1892 #if SIZEOF_WCHAR_T == 4
1893     wxMBConvUTF16 converter;
1894 #if wxUSE_UNICODE
1895     size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
1896     ubuf = (UniChar*) malloc( unicharlen + 2 );
1897     converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );
1898 #else
1899     const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1900     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1901     ubuf = (UniChar*) malloc( unicharlen + 2 );
1902     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1903 #endif
1904     chars = unicharlen / 2;
1905 #else
1906 #if wxUSE_UNICODE
1907     ubuf = (UniChar*) text.wc_str();
1908 #else
1909     wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1910     chars = wxWcslen( wchar.data() );
1911     ubuf = (UniChar*) wchar.data();
1912 #endif
1913 #endif
1914
1915     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1916     ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1917         &chars , &style , &atsuLayout );
1918
1919     for ( int pos = 0; pos < (int)chars; pos ++ )
1920     {
1921         unsigned long actualNumberOfBounds = 0;
1922         ATSTrapezoid glyphBounds;
1923
1924         // We get a single bound, since the text should only require one. If it requires more, there is an issue
1925         OSStatus result;
1926         result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
1927             kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
1928         if (result != noErr || actualNumberOfBounds != 1 )
1929             return;
1930
1931         widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
1932         //unsigned char uch = s[i];
1933     }
1934
1935     ::ATSUDisposeTextLayout(atsuLayout);
1936 #if SIZEOF_WCHAR_T == 4
1937     free( ubuf ) ;
1938 #endif
1939 }
1940
1941 void * wxMacCoreGraphicsContext::GetNativeContext()
1942 {
1943     return m_cgContext;
1944 }
1945
1946 // concatenates this transform with the current transform of this context
1947 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1948 {
1949     if ( m_cgContext )
1950         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1951     else
1952         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
1953 }
1954
1955 // sets the transform of this context
1956 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
1957 {
1958     if ( m_cgContext )
1959     {
1960         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1961         transform = CGAffineTransformInvert( transform ) ;
1962         CGContextConcatCTM( m_cgContext, transform);
1963         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1964     }
1965     else
1966     {
1967         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
1968     }
1969 }
1970
1971 // gets the matrix of this context
1972 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
1973 {
1974     wxGraphicsMatrix m = CreateMatrix();
1975     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
1976         CGContextGetCTM( m_cgContext ));
1977     return m;
1978 }
1979
1980 //
1981 // Renderer
1982 //
1983
1984 //-----------------------------------------------------------------------------
1985 // wxMacCoreGraphicsRenderer declaration
1986 //-----------------------------------------------------------------------------
1987
1988 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
1989 {
1990 public :
1991     wxMacCoreGraphicsRenderer() {}
1992
1993     virtual ~wxMacCoreGraphicsRenderer() {}
1994
1995     // Context
1996
1997     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1998
1999     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2000
2001     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2002
2003     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2004
2005     virtual wxGraphicsContext * CreateMeasuringContext();
2006
2007     // Path
2008
2009     virtual wxGraphicsPath CreatePath();
2010
2011     // Matrix
2012
2013     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2014         wxDouble tx=0.0, wxDouble ty=0.0);
2015
2016
2017     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2018
2019     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2020
2021     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2022     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2023         const wxColour&c1, const wxColour&c2) ;
2024
2025     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2026     // with radius r and color cColor
2027     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2028         const wxColour &oColor, const wxColour &cColor) ;
2029
2030    // sets the font
2031     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2032
2033 private :
2034     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2035 } ;
2036
2037 //-----------------------------------------------------------------------------
2038 // wxMacCoreGraphicsRenderer implementation
2039 //-----------------------------------------------------------------------------
2040
2041 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2042
2043 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2044
2045 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2046 {
2047     return &gs_MacCoreGraphicsRenderer;
2048 }
2049
2050 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc)
2051 {
2052     wxMemoryDC* mdc = wxDynamicCast(&dc, wxMemoryDC);
2053     if ( mdc )
2054     {
2055         return new wxMacCoreGraphicsContext(this,
2056             (CGContextRef)mdc->GetGraphicsContext()->GetNativeContext());
2057     }
2058     else
2059     {
2060         return new wxMacCoreGraphicsContext(this,(CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
2061     }
2062 }
2063
2064 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2065 {
2066     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2067 }
2068
2069
2070 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2071 {
2072     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
2073 }
2074
2075 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2076 {
2077     return new wxMacCoreGraphicsContext(this, window );
2078 }
2079
2080 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2081 {
2082     return new wxMacCoreGraphicsContext(this);
2083 }
2084
2085 // Path
2086
2087 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2088 {
2089     wxGraphicsPath m;
2090     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2091     return m;
2092 }
2093
2094
2095 // Matrix
2096
2097 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2098     wxDouble tx, wxDouble ty)
2099 {
2100     wxGraphicsMatrix m;
2101     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2102     data->Set( a,b,c,d,tx,ty ) ;
2103     m.SetRefData(data);
2104     return m;
2105 }
2106
2107 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2108 {
2109     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
2110         return wxNullGraphicsPen;
2111     else
2112     {
2113         wxGraphicsPen p;
2114         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2115         return p;
2116     }
2117 }
2118
2119 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2120 {
2121     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2122         return wxNullGraphicsBrush;
2123     else
2124     {
2125         wxGraphicsBrush p;
2126         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2127         return p;
2128     }
2129 }
2130
2131 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2132 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2133     const wxColour&c1, const wxColour&c2)
2134 {
2135     wxGraphicsBrush p;
2136     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2137     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
2138     p.SetRefData(d);
2139     return p;
2140 }
2141
2142 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2143 // with radius r and color cColor
2144 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2145     const wxColour &oColor, const wxColour &cColor)
2146 {
2147     wxGraphicsBrush p;
2148     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2149     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2150     p.SetRefData(d);
2151     return p;
2152 }
2153
2154 // sets the font
2155 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2156 {
2157     if ( font.Ok() )
2158     {
2159         wxGraphicsFont p;
2160         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2161         return p;
2162     }
2163     else
2164         return wxNullGraphicsFont;
2165 }
2166