src/mac/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/dccg.cpp
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/graphics.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/dcclient.h"
  18     #include "wx/dcmemory.h"
  19     #include "wx/log.h"
  20     #include "wx/region.h"
  21     #include "wx/image.h"
  22     #include "wx/icon.h"
  23 #endif
  24
  25 #include "wx/mac/uma.h"
  26
  27 #ifdef __MSL__
  28     #if __MSL__ >= 0x6000
  29         #include "math.h"
  30         // in case our functions were defined outside std, we make it known all the same
  31         namespace std { }
  32         using namespace std;
  33     #endif
  34 #endif
  35
  36 #include "wx/mac/private.h"
  37
  38 //-----------------------------------------------------------------------------
  39 // constants
  40 //-----------------------------------------------------------------------------
  41
  42 #if !defined( __DARWIN__ ) || defined(__MWERKS__)
  43 #ifndef M_PI
  44 const double M_PI = 3.14159265358979;
  45 #endif
  46 #endif
  47
  48 static const double RAD2DEG = 180.0 / M_PI;
  49
  50 //
  51 // Pen, Brushes and Fonts
  52 //
  53
  54 #pragma mark -
  55 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
  56
  57 OSStatus wxMacDrawCGImage(
  58                   CGContextRef    inContext,
  59                   const HIRect *  inBounds,
  60                   CGImageRef      inImage)
  61 {
  62 #ifdef __LP64__
  63     // todo flip
  64     CGContextDrawImage(inContext, *inBounds, inImage );
  65     return noErr;
  66 #else
  67     return HIViewDrawCGImage( inContext, inBounds, inImage );
  68 #endif
  69 }
  70
  71 // CGPattern wrapper class: always allocate on heap, never call destructor
  72
  73 class wxMacCoreGraphicsPattern
  74 {
  75 public :
  76     wxMacCoreGraphicsPattern() {}
  77
  78     // is guaranteed to be called only with a non-Null CGContextRef
  79     virtual void Render( CGContextRef ctxRef ) = 0;
  80
  81     operator CGPatternRef() const { return m_patternRef; }
  82
  83 protected :
  84     virtual ~wxMacCoreGraphicsPattern()
  85     {
  86         // as this is called only when the m_patternRef is been released;
  87         // don't release it again
  88     }
  89
  90     static void _Render( void *info, CGContextRef ctxRef )
  91     {
  92         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
  93         if ( self && ctxRef )
  94             self->Render( ctxRef );
  95     }
  96
  97     static void _Dispose( void *info )
  98     {
  99         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 100         delete self;
 101     }
 102
 103     CGPatternRef m_patternRef;
 104
 105     static const CGPatternCallbacks ms_Callbacks;
 106 };
 107
 108 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
 109
 110 class ImagePattern : public wxMacCoreGraphicsPattern
 111 {
 112 public :
 113     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 114     {
 115         wxASSERT( bmp && bmp->Ok() );
 116
 117         Init( (CGImageRef) bmp->CreateCGImage() , transform );
 118     }
 119
 120     // ImagePattern takes ownership of CGImageRef passed in
 121     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 122     {
 123         if ( image )
 124             CFRetain( image );
 125
 126         Init( image , transform );
 127     }
 128
 129     virtual void Render( CGContextRef ctxRef )
 130     {
 131         if (m_image != NULL)
 132             wxMacDrawCGImage( ctxRef, &m_imageBounds, m_image );
 133     }
 134
 135 protected :
 136     void Init( CGImageRef image, const CGAffineTransform& transform )
 137     {
 138         m_image = image;
 139         if ( m_image )
 140         {
 141             m_imageBounds = CGRectMake( 0.0, 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 142             m_patternRef = CGPatternCreate(
 143                 this , m_imageBounds, transform ,
 144                 m_imageBounds.size.width, m_imageBounds.size.height,
 145                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 146         }
 147     }
 148
 149     virtual ~ImagePattern()
 150     {
 151         if ( m_image )
 152             CGImageRelease( m_image );
 153     }
 154
 155     CGImageRef m_image;
 156     CGRect m_imageBounds;
 157 };
 158
 159 class HatchPattern : public wxMacCoreGraphicsPattern
 160 {
 161 public :
 162     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 163     {
 164         m_hatch = hatchstyle;
 165         m_imageBounds = CGRectMake( 0.0, 0.0, 8.0 , 8.0 );
 166         m_patternRef = CGPatternCreate(
 167             this , m_imageBounds, transform ,
 168             m_imageBounds.size.width, m_imageBounds.size.height,
 169             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 170     }
 171
 172     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 173     {
 174         CGContextStrokeLineSegments( ctxRef , pts , count );
 175     }
 176
 177     virtual void Render( CGContextRef ctxRef )
 178     {
 179         switch ( m_hatch )
 180         {
 181             case wxBDIAGONAL_HATCH :
 182                 {
 183                     CGPoint pts[] =
 184                     {
 185                     { 8.0 , 0.0 } , { 0.0 , 8.0 }
 186                     };
 187                     StrokeLineSegments( ctxRef , pts , 2 );
 188                 }
 189                 break;
 190
 191             case wxCROSSDIAG_HATCH :
 192                 {
 193                     CGPoint pts[] =
 194                     {
 195                         { 0.0 , 0.0 } , { 8.0 , 8.0 } ,
 196                         { 8.0 , 0.0 } , { 0.0 , 8.0 }
 197                     };
 198                     StrokeLineSegments( ctxRef , pts , 4 );
 199                 }
 200                 break;
 201
 202             case wxFDIAGONAL_HATCH :
 203                 {
 204                     CGPoint pts[] =
 205                     {
 206                     { 0.0 , 0.0 } , { 8.0 , 8.0 }
 207                     };
 208                     StrokeLineSegments( ctxRef , pts , 2 );
 209                 }
 210                 break;
 211
 212             case wxCROSS_HATCH :
 213                 {
 214                     CGPoint pts[] =
 215                     {
 216                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 217                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 218                     };
 219                     StrokeLineSegments( ctxRef , pts , 4 );
 220                 }
 221                 break;
 222
 223             case wxHORIZONTAL_HATCH :
 224                 {
 225                     CGPoint pts[] =
 226                     {
 227                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 228                     };
 229                     StrokeLineSegments( ctxRef , pts , 2 );
 230                 }
 231                 break;
 232
 233             case wxVERTICAL_HATCH :
 234                 {
 235                     CGPoint pts[] =
 236                     {
 237                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 238                     };
 239                     StrokeLineSegments( ctxRef , pts , 2 );
 240                 }
 241                 break;
 242
 243             default:
 244                 break;
 245         }
 246     }
 247
 248 protected :
 249     virtual ~HatchPattern() {}
 250
 251     CGRect      m_imageBounds;
 252     int         m_hatch;
 253 };
 254
 255 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 256 {
 257 public:
 258     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 259     ~wxMacCoreGraphicsPenData();
 260
 261     void Init();
 262     virtual void Apply( wxGraphicsContext* context );
 263     virtual wxDouble GetWidth() { return m_width; }
 264
 265 protected :
 266     CGLineCap m_cap;
 267     wxMacCFRefHolder<CGColorRef> m_color;
 268     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 269
 270     CGLineJoin m_join;
 271     CGFloat m_width;
 272
 273     int m_count;
 274     const CGFloat *m_lengths;
 275     CGFloat *m_userLengths;
 276
 277
 278     bool m_isPattern;
 279     wxMacCFRefHolder<CGPatternRef> m_pattern;
 280     CGFloat* m_patternColorComponents;
 281 };
 282
 283 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 284     wxGraphicsObjectRefData( renderer )
 285 {
 286     Init();
 287
 288     CGFloat components[4] = { pen.GetColour().Red() / 255.0 , pen.GetColour().Green() / 255.0 ,
 289             pen.GetColour().Blue() / 255.0 , pen.GetColour().Alpha() / 255.0 } ;
 290     m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 291
 292     // TODO: * m_dc->m_scaleX
 293     m_width = pen.GetWidth();
 294     if (m_width <= 0.0)
 295         m_width = 0.1;
 296
 297     switch ( pen.GetCap() )
 298     {
 299         case wxCAP_ROUND :
 300             m_cap = kCGLineCapRound;
 301             break;
 302
 303         case wxCAP_PROJECTING :
 304             m_cap = kCGLineCapSquare;
 305             break;
 306
 307         case wxCAP_BUTT :
 308             m_cap = kCGLineCapButt;
 309             break;
 310
 311         default :
 312             m_cap = kCGLineCapButt;
 313             break;
 314     }
 315
 316     switch ( pen.GetJoin() )
 317     {
 318         case wxJOIN_BEVEL :
 319             m_join = kCGLineJoinBevel;
 320             break;
 321
 322         case wxJOIN_MITER :
 323             m_join = kCGLineJoinMiter;
 324             break;
 325
 326         case wxJOIN_ROUND :
 327             m_join = kCGLineJoinRound;
 328             break;
 329
 330         default :
 331             m_join = kCGLineJoinMiter;
 332             break;
 333     }
 334
 335     const CGFloat dashUnit = m_width < 1.0 ? 1.0 : m_width;
 336
 337     const CGFloat dotted[] = { dashUnit , dashUnit + 2.0 };
 338     static const CGFloat short_dashed[] = { 9.0 , 6.0 };
 339     static const CGFloat dashed[] = { 19.0 , 9.0 };
 340     static const CGFloat dotted_dashed[] = { 9.0 , 6.0 , 3.0 , 3.0 };
 341
 342     switch ( pen.GetStyle() )
 343     {
 344         case wxSOLID :
 345             break;
 346
 347         case wxDOT :
 348             m_count = WXSIZEOF(dotted);
 349             m_userLengths = new CGFloat[ m_count ] ;
 350             memcpy( m_userLengths, dotted, sizeof(dotted) );
 351             m_lengths = m_userLengths;
 352             break;
 353
 354         case wxLONG_DASH :
 355             m_count = WXSIZEOF(dashed);
 356             m_lengths = dashed;
 357             break;
 358
 359         case wxSHORT_DASH :
 360             m_count = WXSIZEOF(short_dashed);
 361             m_lengths = short_dashed;
 362             break;
 363
 364         case wxDOT_DASH :
 365             m_count = WXSIZEOF(dotted_dashed);
 366             m_lengths = dotted_dashed;
 367             break;
 368
 369         case wxUSER_DASH :
 370             wxDash *dashes;
 371             m_count = pen.GetDashes( &dashes );
 372             if ((dashes != NULL) && (m_count > 0))
 373             {
 374                 m_userLengths = new CGFloat[m_count];
 375                 for ( int i = 0; i < m_count; ++i )
 376                 {
 377                     m_userLengths[i] = dashes[i] * dashUnit;
 378
 379                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 380                         m_userLengths[i] = dashUnit + 2.0;
 381                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 382                         m_userLengths[i] = dashUnit;
 383                 }
 384             }
 385             m_lengths = m_userLengths;
 386             break;
 387
 388         case wxSTIPPLE :
 389             {
 390                 wxBitmap* bmp = pen.GetStipple();
 391                 if ( bmp && bmp->Ok() )
 392                 {
 393                     m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 394                     m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 395                     m_patternColorComponents = new CGFloat[1] ;
 396                     m_patternColorComponents[0] = 1.0;
 397                     m_isPattern = true;
 398                 }
 399             }
 400             break;
 401
 402         default :
 403             {
 404                 m_isPattern = true;
 405                 m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 406                 m_pattern.Set( *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 407                 m_patternColorComponents = new CGFloat[4] ;
 408                 m_patternColorComponents[0] = pen.GetColour().Red() / 255.0;
 409                 m_patternColorComponents[1] = pen.GetColour().Green() / 255.0;
 410                 m_patternColorComponents[2] = pen.GetColour().Blue() / 255.0;
 411                 m_patternColorComponents[3] =  pen.GetColour().Alpha() / 255.0;
 412             }
 413             break;
 414     }
 415     if ((m_lengths != NULL) && (m_count > 0))
 416     {
 417         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 418         m_cap = kCGLineCapButt;
 419     }
 420 }
 421
 422 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 423 {
 424     delete[] m_userLengths;
 425     delete[] m_patternColorComponents;
 426 }
 427
 428 void wxMacCoreGraphicsPenData::Init()
 429 {
 430     m_lengths = NULL;
 431     m_userLengths = NULL;
 432     m_width = 0;
 433     m_count = 0;
 434     m_patternColorComponents = NULL;
 435     m_isPattern = false;
 436 }
 437
 438 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 439 {
 440     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 441     CGContextSetLineWidth( cg , m_width );
 442     CGContextSetLineJoin( cg , m_join );
 443
 444     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 445     CGContextSetLineCap( cg , m_cap );
 446
 447     if ( m_isPattern )
 448     {
 449         CGAffineTransform matrix = CGContextGetCTM( cg );
 450         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 451         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 452         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 453     }
 454     else
 455     {
 456         if ( context->GetLogicalFunction() == wxINVERT || context->GetLogicalFunction() == wxXOR )
 457         {
 458             CGContextSetRGBStrokeColor( cg , 1.0, 1.0 , 1.0, 1.0 );
 459         }
 460         else
 461             CGContextSetStrokeColorWithColor( cg , m_color );
 462     }
 463 }
 464
 465 //
 466 // Brush
 467 //
 468
 469 static const char *gs_stripedback_xpm[] = {
 470 /* columns rows colors chars-per-pixel */
 471 "4 4 2 1",
 472 ". c #F0F0F0",
 473 "X c #ECECEC",
 474 /* pixels */
 475 "....",
 476 "....",
 477 "XXXX",
 478 "XXXX"
 479 };
 480
 481 wxBitmap gs_stripedback_bmp( wxImage( (const char* const* ) gs_stripedback_xpm  ), -1 ) ;
 482
 483 // make sure we all use one class for all conversions from wx to native colour
 484
 485 class wxMacCoreGraphicsColour
 486 {
 487     public:
 488         wxMacCoreGraphicsColour();
 489         wxMacCoreGraphicsColour(const wxBrush &brush);
 490         ~wxMacCoreGraphicsColour();
 491
 492         void Apply( CGContextRef cgContext );
 493     protected:
 494         void Init();
 495         wxMacCFRefHolder<CGColorRef> m_color;
 496         wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 497
 498         bool m_isPattern;
 499         wxMacCFRefHolder<CGPatternRef> m_pattern;
 500         CGFloat* m_patternColorComponents;
 501 } ;
 502
 503 wxMacCoreGraphicsColour::~wxMacCoreGraphicsColour()
 504 {
 505     delete[] m_patternColorComponents;
 506 }
 507
 508 void wxMacCoreGraphicsColour::Init()
 509 {
 510     m_isPattern = false;
 511     m_patternColorComponents = NULL;
 512 }
 513
 514 void wxMacCoreGraphicsColour::Apply( CGContextRef cgContext )
 515 {
 516     if ( m_isPattern )
 517     {
 518         CGAffineTransform matrix = CGContextGetCTM( cgContext );
 519         CGContextSetPatternPhase( cgContext, CGSizeMake(matrix.tx, matrix.ty) );
 520         CGContextSetFillColorSpace( cgContext , m_colorSpace );
 521         CGContextSetFillPattern( cgContext, m_pattern , m_patternColorComponents );
 522     }
 523     else
 524     {
 525         CGContextSetFillColorWithColor( cgContext, m_color );
 526     }
 527 }
 528
 529 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour()
 530 {
 531     Init();
 532 }
 533
 534 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
 535 {
 536     Init();
 537     if ( brush.GetStyle() == wxSOLID )
 538     {
 539         m_color.Set( brush.GetColour().CreateCGColor() );
 540     }
 541     else if ( brush.IsHatch() )
 542     {
 543         m_isPattern = true;
 544         m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 545         m_pattern.Set( *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 546
 547         m_patternColorComponents = new CGFloat[4] ;
 548         m_patternColorComponents[0] = brush.GetColour().Red() / 255.0;
 549         m_patternColorComponents[1] = brush.GetColour().Green() / 255.0;
 550         m_patternColorComponents[2] = brush.GetColour().Blue() / 255.0;
 551         m_patternColorComponents[3] = brush.GetColour().Alpha() / 255.0;
 552     }
 553     else
 554     {
 555         // now brush is a bitmap
 556         wxBitmap* bmp = brush.GetStipple();
 557         if ( bmp && bmp->Ok() )
 558         {
 559             m_isPattern = true;
 560             m_patternColorComponents = new CGFloat[1] ;
 561             m_patternColorComponents[0] = 1.0;
 562             m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 563             m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 564         }
 565     }
 566 }
 567
 568 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 569 {
 570 public:
 571     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 572     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 573     ~wxMacCoreGraphicsBrushData ();
 574
 575     virtual void Apply( wxGraphicsContext* context );
 576     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 577         const wxColour&c1, const wxColour&c2 );
 578     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 579     const wxColour &oColor, const wxColour &cColor );
 580
 581     virtual bool IsShading() { return m_isShading; }
 582     CGShadingRef GetShading() { return m_shading; }
 583 protected:
 584     CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
 585     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 586     virtual void Init();
 587
 588     wxMacCoreGraphicsColour m_cgColor;
 589
 590     bool m_isShading;
 591     CGFunctionRef m_gradientFunction;
 592     CGShadingRef m_shading;
 593     CGFloat *m_gradientComponents;
 594 };
 595
 596 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 597 {
 598     Init();
 599 }
 600
 601 void wxMacCoreGraphicsBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 602         const wxColour&c1, const wxColour&c2 )
 603 {
 604     m_gradientFunction = CreateGradientFunction( c1, c2 );
 605     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake(x1,y1), CGPointMake(x2,y2), m_gradientFunction, true, true ) ;
 606     m_isShading = true ;
 607 }
 608
 609 void wxMacCoreGraphicsBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 610     const wxColour &oColor, const wxColour &cColor )
 611 {
 612     m_gradientFunction = CreateGradientFunction( oColor, cColor );
 613     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake(xo,yo), 0, CGPointMake(xc,yc), radius, m_gradientFunction, true, true ) ;
 614     m_isShading = true ;
 615 }
 616
 617 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer ),
 618     m_cgColor( brush )
 619 {
 620     Init();
 621
 622 }
 623
 624 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 625 {
 626     if ( m_shading )
 627         CGShadingRelease(m_shading);
 628
 629     if( m_gradientFunction )
 630         CGFunctionRelease(m_gradientFunction);
 631
 632     delete[] m_gradientComponents;
 633 }
 634
 635 void wxMacCoreGraphicsBrushData::Init()
 636 {
 637     m_gradientFunction = NULL;
 638     m_shading = NULL;
 639     m_gradientComponents = NULL;
 640     m_isShading = false;
 641 }
 642
 643 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 644 {
 645     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 646
 647     if ( m_isShading )
 648     {
 649         // nothing to set as shades are processed by clipping using the path and filling
 650     }
 651     else
 652     {
 653         m_cgColor.Apply( cg );
 654     }
 655 }
 656
 657 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 658 {
 659     CGFloat* colors = (CGFloat*) info ;
 660     CGFloat f = *in;
 661     for( int i = 0 ; i < 4 ; ++i )
 662     {
 663         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 664     }
 665 }
 666
 667 CGFunctionRef wxMacCoreGraphicsBrushData::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
 668 {
 669     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 670     static const CGFloat input_value_range [2] = { 0, 1 };
 671     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 672     m_gradientComponents = new CGFloat[8] ;
 673     m_gradientComponents[0] = c1.Red() / 255.0;
 674     m_gradientComponents[1] = c1.Green() / 255.0;
 675     m_gradientComponents[2] = c1.Blue() / 255.0;
 676     m_gradientComponents[3] = c1.Alpha() / 255.0;
 677     m_gradientComponents[4] = c2.Red() / 255.0;
 678     m_gradientComponents[5] = c2.Green() / 255.0;
 679     m_gradientComponents[6] = c2.Blue() / 255.0;
 680     m_gradientComponents[7] = c2.Alpha() / 255.0;
 681
 682     return CGFunctionCreate ( m_gradientComponents,  1,
 683                             input_value_range,
 684                             4,
 685                             output_value_ranges,
 686                             &callbacks);
 687 }
 688
 689 //
 690 // Font
 691 //
 692
 693 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 694 {
 695 public:
 696     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 697     ~wxMacCoreGraphicsFontData();
 698
 699     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 700 private :
 701     ATSUStyle m_macATSUIStyle;
 702 };
 703
 704 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 705 {
 706     m_macATSUIStyle = NULL;
 707
 708 #ifdef wxMAC_USE_CORE_TEXT
 709 #elif defined(wxMAC_USE_ATSU_TEXT)
 710     OSStatus status;
 711
 712     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 713
 714     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 715
 716     // we need the scale here ...
 717
 718     Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
 719     RGBColor atsuColor ;
 720     col.GetRGBColor( &atsuColor );
 721     ATSUAttributeTag atsuTags[] =
 722     {
 723             kATSUSizeTag ,
 724             kATSUColorTag ,
 725     };
 726     ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 727     {
 728             sizeof( Fixed ) ,
 729             sizeof( RGBColor ) ,
 730     };
 731     ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 732     {
 733             &atsuSize ,
 734             &atsuColor ,
 735     };
 736
 737     status = ::ATSUSetAttributes(
 738         m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
 739         atsuTags, atsuSizes, atsuValues);
 740
 741     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 742 #elif defined(WXMAC_USE_CG_TEXT)
 743 #endif
 744 }
 745
 746 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 747 {
 748 #ifdef wxMAC_USE_CORE_TEXT
 749 #elif defined(wxMAC_USE_ATSU_TEXT)
 750     if ( m_macATSUIStyle )
 751     {
 752         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 753         m_macATSUIStyle = NULL;
 754     }
 755 #elif defined(WXMAC_USE_CG_TEXT)
 756 #endif
 757 }
 758
 759 //
 760 // Graphics Matrix
 761 //
 762
 763 //-----------------------------------------------------------------------------
 764 // wxMacCoreGraphicsMatrix declaration
 765 //-----------------------------------------------------------------------------
 766
 767 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
 768 {
 769 public :
 770     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
 771
 772     virtual ~wxMacCoreGraphicsMatrixData() ;
 773
 774     virtual wxGraphicsObjectRefData *Clone() const ;
 775
 776     // concatenates the matrix
 777     virtual void Concat( const wxGraphicsMatrixData *t );
 778
 779     // sets the matrix to the respective values
 780     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 781         wxDouble tx=0.0, wxDouble ty=0.0);
 782
 783     // gets the component valuess of the matrix
 784     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 785                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 786
 787     // makes this the inverse matrix
 788     virtual void Invert();
 789
 790     // returns true if the elements of the transformation matrix are equal ?
 791     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 792
 793     // return true if this is the identity matrix
 794     virtual bool IsIdentity() const;
 795
 796     //
 797     // transformation
 798     //
 799
 800     // add the translation to this matrix
 801     virtual void Translate( wxDouble dx , wxDouble dy );
 802
 803     // add the scale to this matrix
 804     virtual void Scale( wxDouble xScale , wxDouble yScale );
 805
 806     // add the rotation to this matrix (radians)
 807     virtual void Rotate( wxDouble angle );
 808
 809     //
 810     // apply the transforms
 811     //
 812
 813     // applies that matrix to the point
 814     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 815
 816     // applies the matrix except for translations
 817     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 818
 819     // returns the native representation
 820     virtual void * GetNativeMatrix() const;
 821
 822 private :
 823     CGAffineTransform m_matrix;
 824 } ;
 825
 826 //-----------------------------------------------------------------------------
 827 // wxMacCoreGraphicsMatrix implementation
 828 //-----------------------------------------------------------------------------
 829
 830 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
 831 {
 832 }
 833
 834 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
 835 {
 836 }
 837
 838 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 839 {
 840     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
 841     m->m_matrix = m_matrix ;
 842     return m;
 843 }
 844
 845 // concatenates the matrix
 846 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 847 {
 848     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 849 }
 850
 851 // sets the matrix to the respective values
 852 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 853     wxDouble tx, wxDouble ty)
 854 {
 855     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 856 }
 857
 858 // gets the component valuess of the matrix
 859 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 860                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
 861 {
 862     if (a)  *a = m_matrix.a;
 863     if (b)  *b = m_matrix.b;
 864     if (c)  *c = m_matrix.c;
 865     if (d)  *d = m_matrix.d;
 866     if (tx) *tx= m_matrix.tx;
 867     if (ty) *ty= m_matrix.ty;
 868 }
 869
 870 // makes this the inverse matrix
 871 void wxMacCoreGraphicsMatrixData::Invert()
 872 {
 873     m_matrix = CGAffineTransformInvert( m_matrix );
 874 }
 875
 876 // returns true if the elements of the transformation matrix are equal ?
 877 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 878 {
 879     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 880 }
 881
 882 // return true if this is the identity matrix
 883 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
 884 {
 885     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
 886         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
 887 }
 888
 889 //
 890 // transformation
 891 //
 892
 893 // add the translation to this matrix
 894 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
 895 {
 896     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
 897 }
 898
 899 // add the scale to this matrix
 900 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 901 {
 902     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
 903 }
 904
 905 // add the rotation to this matrix (radians)
 906 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
 907 {
 908     m_matrix = CGAffineTransformRotate( m_matrix, angle);
 909 }
 910
 911 //
 912 // apply the transforms
 913 //
 914
 915 // applies that matrix to the point
 916 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
 917 {
 918     CGPoint pt = CGPointApplyAffineTransform( CGPointMake(*x,*y), m_matrix);
 919
 920     *x = pt.x;
 921     *y = pt.y;
 922 }
 923
 924 // applies the matrix except for translations
 925 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
 926 {
 927     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake(*dx,*dy) , m_matrix );
 928     *dx = sz.width;
 929     *dy = sz.height;
 930 }
 931
 932 // returns the native representation
 933 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
 934 {
 935     return (void*) &m_matrix;
 936 }
 937
 938 //
 939 // Graphics Path
 940 //
 941
 942 //-----------------------------------------------------------------------------
 943 // wxMacCoreGraphicsPath declaration
 944 //-----------------------------------------------------------------------------
 945
 946 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
 947 {
 948 public :
 949     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
 950
 951     ~wxMacCoreGraphicsPathData();
 952
 953     virtual wxGraphicsObjectRefData *Clone() const;
 954
 955     // begins a new subpath at (x,y)
 956     virtual void MoveToPoint( wxDouble x, wxDouble y );
 957
 958     // adds a straight line from the current point to (x,y)
 959     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 960
 961     // adds a cubic Bezier curve from the current point, using two control points and an end point
 962     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 963
 964     // closes the current sub-path
 965     virtual void CloseSubpath();
 966
 967     // gets the last point of the current path, (0,0) if not yet set
 968     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 969
 970     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 971     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
 972
 973     //
 974     // These are convenience functions which - if not available natively will be assembled
 975     // using the primitives from above
 976     //
 977
 978     // adds a quadratic Bezier curve from the current point, using a control point and an end point
 979     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
 980
 981     // appends a rectangle as a new closed subpath
 982     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 983
 984     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 985     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 986
 987     // 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)
 988     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 989
 990     // adds another path
 991     virtual void AddPath( const wxGraphicsPathData* path );
 992
 993     // returns the native path
 994     virtual void * GetNativePath() const { return m_path; }
 995
 996     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 997     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
 998
 999     // transforms each point of this path by the matrix
1000     virtual void Transform( const wxGraphicsMatrixData* matrix );
1001
1002     // gets the bounding box enclosing all points (possibly including control points)
1003     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
1004
1005     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
1006 private :
1007     CGMutablePathRef m_path;
1008 };
1009
1010 //-----------------------------------------------------------------------------
1011 // wxMacCoreGraphicsPath implementation
1012 //-----------------------------------------------------------------------------
1013
1014 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1015 {
1016     if ( path )
1017         m_path = path;
1018     else
1019         m_path = CGPathCreateMutable();
1020 }
1021
1022 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1023 {
1024     CGPathRelease( m_path );
1025 }
1026
1027 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1028 {
1029     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1030     return clone ;
1031 }
1032
1033
1034 // opens (starts) a new subpath
1035 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1036 {
1037     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
1038 }
1039
1040 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1041 {
1042     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
1043 }
1044
1045 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1046 {
1047     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
1048 }
1049
1050 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1051 {
1052     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
1053 }
1054
1055 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1056 {
1057     CGRect cgRect = { { x , y } , { w , h } };
1058     CGPathAddRect( m_path , NULL , cgRect );
1059 }
1060
1061 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1062 {
1063     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1064 }
1065
1066 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1067 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1068 {
1069     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1070     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1071 }
1072
1073 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1074 {
1075     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1076 }
1077
1078 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1079 {
1080     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1081 }
1082
1083 // closes the current subpath
1084 void wxMacCoreGraphicsPathData::CloseSubpath()
1085 {
1086     CGPathCloseSubpath( m_path );
1087 }
1088
1089 // gets the last point of the current path, (0,0) if not yet set
1090 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1091 {
1092     CGPoint p = CGPathGetCurrentPoint( m_path );
1093     *x = p.x;
1094     *y = p.y;
1095 }
1096
1097 // transforms each point of this path by the matrix
1098 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1099 {
1100     CGMutablePathRef p = CGPathCreateMutable() ;
1101     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1102     CGPathRelease( m_path );
1103     m_path = p;
1104 }
1105
1106 // gets the bounding box enclosing all points (possibly including control points)
1107 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1108 {
1109     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1110     *x = bounds.origin.x;
1111     *y = bounds.origin.y;
1112     *w = bounds.size.width;
1113     *h = bounds.size.height;
1114 }
1115
1116 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, int fillStyle) const
1117 {
1118     return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1119 }
1120
1121 //
1122 // Graphics Context
1123 //
1124
1125 //-----------------------------------------------------------------------------
1126 // wxMacCoreGraphicsContext declaration
1127 //-----------------------------------------------------------------------------
1128
1129 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1130 {
1131 public:
1132     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1133
1134     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1135
1136     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1137
1138     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1139
1140     wxMacCoreGraphicsContext();
1141
1142     ~wxMacCoreGraphicsContext();
1143
1144     void Init();
1145
1146     // returns the size of the graphics context in device coordinates
1147     virtual void GetSize( wxDouble* width, wxDouble* height);
1148
1149     virtual void StartPage( wxDouble width, wxDouble height );
1150
1151     virtual void EndPage();
1152
1153     virtual void Flush();
1154
1155     // push the current state of the context, ie the transformation matrix on a stack
1156     virtual void PushState();
1157
1158     // pops a stored state from the stack
1159     virtual void PopState();
1160
1161     // clips drawings to the region
1162     virtual void Clip( const wxRegion &region );
1163
1164     // clips drawings to the rect
1165     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1166
1167     // resets the clipping to original extent
1168     virtual void ResetClip();
1169
1170     virtual void * GetNativeContext();
1171
1172     bool SetLogicalFunction( int function );
1173     //
1174     // transformation
1175     //
1176
1177     // translate
1178     virtual void Translate( wxDouble dx , wxDouble dy );
1179
1180     // scale
1181     virtual void Scale( wxDouble xScale , wxDouble yScale );
1182
1183     // rotate (radians)
1184     virtual void Rotate( wxDouble angle );
1185
1186     // concatenates this transform with the current transform of this context
1187     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1188
1189     // sets the transform of this context
1190     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1191
1192     // gets the matrix of this context
1193     virtual wxGraphicsMatrix GetTransform() const;
1194     //
1195     // setting the paint
1196     //
1197
1198     // strokes along a path with the current pen
1199     virtual void StrokePath( const wxGraphicsPath &path );
1200
1201     // fills a path with the current brush
1202     virtual void FillPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1203
1204     // draws a path by first filling and then stroking
1205     virtual void DrawPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1206
1207     virtual bool ShouldOffset() const
1208     {
1209         int penwidth = 0 ;
1210         if ( !m_pen.IsNull() )
1211         {
1212             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1213             if ( penwidth == 0 )
1214                 penwidth = 1;
1215         }
1216         return ( penwidth % 2 ) == 1;
1217     }
1218     //
1219     // text
1220     //
1221
1222     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1223
1224     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1225
1226     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1227         wxDouble *descent, wxDouble *externalLeading ) const;
1228
1229     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1230
1231     //
1232     // image support
1233     //
1234
1235     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1236
1237     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1238
1239     void SetNativeContext( CGContextRef cg );
1240
1241     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1242     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1243
1244 private:
1245     void EnsureIsValid();
1246
1247     CGContextRef m_cgContext;
1248     WindowRef m_windowRef;
1249     bool m_releaseContext;
1250     CGAffineTransform m_windowTransform;
1251     wxDouble m_width;
1252     wxDouble m_height;
1253
1254     wxMacCFRefHolder<HIShapeRef> m_clipRgn;
1255 };
1256
1257 //-----------------------------------------------------------------------------
1258 // device context implementation
1259 //
1260 // more and more of the dc functionality should be implemented by calling
1261 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1262 // also coordinate conversions should be moved to native matrix ops
1263 //-----------------------------------------------------------------------------
1264
1265 // we always stock two context states, one at entry, to be able to preserve the
1266 // state we were called with, the other one after changing to HI Graphics orientation
1267 // (this one is used for getting back clippings etc)
1268
1269 //-----------------------------------------------------------------------------
1270 // wxMacCoreGraphicsContext implementation
1271 //-----------------------------------------------------------------------------
1272
1273 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1274
1275 class wxQuartzOffsetHelper
1276 {
1277 public :
1278     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1279     {
1280         m_cg = cg;
1281         m_offset = offset;
1282         if ( m_offset )
1283             CGContextTranslateCTM( m_cg, 0.5, 0.5 );
1284     }
1285     ~wxQuartzOffsetHelper( )
1286     {
1287         if ( m_offset )
1288             CGContextTranslateCTM( m_cg, -0.5, -0.5 );
1289     }
1290 public :
1291     CGContextRef m_cg;
1292     bool m_offset;
1293 } ;
1294
1295 void wxMacCoreGraphicsContext::Init()
1296 {
1297     m_cgContext = NULL;
1298     m_releaseContext = false;
1299     m_windowRef = NULL;
1300     m_width = 0;
1301     m_height = 0;
1302
1303     HIRect r = CGRectMake(0,0,0,0);
1304     m_clipRgn.Set(HIShapeCreateWithRect(&r));
1305 }
1306
1307 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1308 {
1309     Init();
1310     SetNativeContext(cgcontext);
1311     m_width = width;
1312     m_height = height;
1313 }
1314
1315 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1316 {
1317     Init();
1318     m_windowRef = window;
1319 }
1320
1321 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1322 {
1323     Init();
1324     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1325     int originX , originY;
1326     originX = originY = 0;
1327     window->MacWindowToRootWindow( &originX , &originY );
1328
1329     Rect bounds = { 0,0,0,0 };
1330 #ifdef __LP64__
1331 #else
1332     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1333 #endif
1334     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1335     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1336     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1337 }
1338
1339 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1340 {
1341     Init();
1342 }
1343
1344 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1345 {
1346     Init();
1347     wxLogDebug(wxT("Illegal Constructor called"));
1348 }
1349
1350 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1351 {
1352     SetNativeContext(NULL);
1353 }
1354
1355 void wxMacCoreGraphicsContext::GetSize( wxDouble* width, wxDouble* height)
1356 {
1357     *width = m_width;
1358     *height = m_height;
1359 }
1360
1361
1362 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1363 {
1364     CGRect r;
1365     if ( width != 0 && height != 0)
1366         r = CGRectMake( 0 , 0 , width  , height );
1367     else
1368         r = CGRectMake( 0 , 0 , m_width  , m_height );
1369
1370     CGContextBeginPage(m_cgContext,  &r );
1371 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1372 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1373 }
1374
1375 void wxMacCoreGraphicsContext::EndPage()
1376 {
1377     CGContextEndPage(m_cgContext);
1378 }
1379
1380 void wxMacCoreGraphicsContext::Flush()
1381 {
1382     CGContextFlush(m_cgContext);
1383 }
1384
1385 void wxMacCoreGraphicsContext::EnsureIsValid()
1386 {
1387     if ( !m_cgContext )
1388     {
1389         OSStatus status =
1390 #ifndef __LP64__
1391             QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1392 #else
1393             paramErr;
1394 #endif
1395         wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
1396
1397         CGContextConcatCTM( m_cgContext, m_windowTransform );
1398                 CGContextSaveGState( m_cgContext );
1399                 m_releaseContext = true;
1400                 if ( !HIShapeIsEmpty(m_clipRgn) )
1401                 {
1402             // the clip region is in device coordinates, so we convert this again to user coordinates
1403             wxMacCFRefHolder<HIMutableShapeRef> hishape ;
1404             hishape.Set( HIShapeCreateMutableCopy( m_clipRgn ) );
1405             CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1406             HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1407                         HIShapeReplacePathInCGContext( hishape, m_cgContext );
1408                         CGContextClip( m_cgContext );
1409                 }
1410                 CGContextSaveGState( m_cgContext );
1411         }
1412 }
1413
1414 // TODO test whether the private CGContextSetCompositeOperation works under 10.3 (using NSCompositingModes)
1415
1416 bool wxMacCoreGraphicsContext::SetLogicalFunction( int function )
1417 {
1418     if (m_logicalFunction == function)
1419         return true;
1420
1421     EnsureIsValid();
1422
1423     bool retval = false;
1424
1425     if ( function == wxCOPY )
1426     {
1427         retval = true;
1428         CGContextSetBlendMode( m_cgContext, kCGBlendModeNormal );
1429     }
1430     else if ( function == wxINVERT || function == wxXOR )
1431     {
1432         // change color to white
1433         CGContextSetBlendMode( m_cgContext, kCGBlendModeExclusion );
1434         CGContextSetShouldAntialias( m_cgContext, false );
1435         retval = true;
1436     }
1437
1438     if (retval)
1439         m_logicalFunction = function;
1440     return retval ;
1441 }
1442
1443 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1444 {
1445     if( m_cgContext )
1446     {
1447         HIShapeReplacePathInCGContext( region.GetWXHRGN() , m_cgContext );
1448         CGContextClip( m_cgContext );
1449     }
1450     else
1451     {
1452         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1453         // to regions we try at least to have correct translations
1454         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
1455
1456         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1457         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1458         m_clipRgn.Set(mutableShape);
1459     }
1460 }
1461
1462 // clips drawings to the rect
1463 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1464 {
1465     HIRect r = CGRectMake( x , y , w , h );
1466     if ( m_cgContext )
1467     {
1468         CGContextClipToRect( m_cgContext, r );
1469     }
1470     else
1471     {
1472         // the clipping itself must be stored as device coordinates, otherwise
1473         // we cannot apply it back correctly
1474         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1475         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1476     }
1477 }
1478
1479     // resets the clipping to original extent
1480 void wxMacCoreGraphicsContext::ResetClip()
1481 {
1482     if ( m_cgContext )
1483     {
1484         // there is no way for clearing the clip, we can only revert to the stored
1485         // state, but then we have to make sure everything else is NOT restored
1486         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1487         CGContextRestoreGState( m_cgContext );
1488         CGContextSaveGState( m_cgContext );
1489         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1490         transformNew = CGAffineTransformInvert( transformNew ) ;
1491         CGContextConcatCTM( m_cgContext, transformNew);
1492         CGContextConcatCTM( m_cgContext, transform);
1493     }
1494     else
1495     {
1496         HIRect r = CGRectMake(0,0,0,0);
1497         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1498     }
1499 }
1500
1501 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1502 {
1503     if ( m_pen.IsNull() )
1504         return ;
1505
1506     EnsureIsValid();
1507
1508     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1509
1510     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1511     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1512     CGContextStrokePath( m_cgContext );
1513 }
1514
1515 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , int fillStyle )
1516 {
1517     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1518     {
1519         // when using shading, we cannot draw pen and brush at the same time
1520         // revert to the base implementation of first filling and then stroking
1521         wxGraphicsContext::DrawPath( path, fillStyle );
1522         return;
1523     }
1524
1525     CGPathDrawingMode mode = kCGPathFill ;
1526     if ( m_brush.IsNull() )
1527     {
1528         if ( m_pen.IsNull() )
1529             return;
1530         else
1531             mode = kCGPathStroke;
1532     }
1533     else
1534     {
1535         if ( m_pen.IsNull() )
1536         {
1537             if ( fillStyle == wxODDEVEN_RULE )
1538                 mode = kCGPathEOFill;
1539             else
1540                 mode = kCGPathFill;
1541         }
1542         else
1543         {
1544             if ( fillStyle == wxODDEVEN_RULE )
1545                 mode = kCGPathEOFillStroke;
1546             else
1547                 mode = kCGPathFillStroke;
1548         }
1549     }
1550
1551     EnsureIsValid();
1552
1553     if ( !m_brush.IsNull() )
1554         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1555     if ( !m_pen.IsNull() )
1556         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1557
1558     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1559
1560     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1561     CGContextDrawPath( m_cgContext , mode );
1562 }
1563
1564 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , int fillStyle )
1565 {
1566     if ( m_brush.IsNull() )
1567         return;
1568
1569     EnsureIsValid();
1570
1571     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1572     {
1573         CGContextSaveGState( m_cgContext );
1574         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1575         CGContextClip( m_cgContext );
1576         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1577         CGContextRestoreGState( m_cgContext);
1578     }
1579     else
1580     {
1581         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1582         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1583         if ( fillStyle == wxODDEVEN_RULE )
1584             CGContextEOFillPath( m_cgContext );
1585         else
1586             CGContextFillPath( m_cgContext );
1587     }
1588 }
1589
1590 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1591 {
1592     // we allow either setting or clearing but not replacing
1593     wxASSERT( m_cgContext == NULL || cg == NULL );
1594
1595     if ( m_cgContext )
1596     {
1597         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1598         CGContextRestoreGState( m_cgContext );
1599         CGContextRestoreGState( m_cgContext );
1600         if ( m_releaseContext )
1601         {
1602 #ifndef __LP64__
1603             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1604 #endif
1605         }
1606         else
1607             CGContextRelease(m_cgContext);
1608     }
1609
1610
1611     m_cgContext = cg;
1612
1613     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1614     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1615     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1616     // for this one operation.
1617
1618     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1619     // can be removed.
1620     if (m_cgContext)
1621     {
1622         CGContextRetain(m_cgContext);
1623         CGContextSaveGState( m_cgContext );
1624         CGContextSaveGState( m_cgContext );
1625         m_releaseContext = false;
1626     }
1627 }
1628
1629 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1630 {
1631     if ( m_cgContext )
1632         CGContextTranslateCTM( m_cgContext, dx, dy );
1633     else
1634         m_windowTransform = CGAffineTransformTranslate(m_windowTransform,dx,dy);
1635 }
1636
1637 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1638 {
1639     if ( m_cgContext )
1640         CGContextScaleCTM( m_cgContext , xScale , yScale );
1641     else
1642         m_windowTransform = CGAffineTransformScale(m_windowTransform,xScale,yScale);
1643 }
1644
1645 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1646 {
1647     if ( m_cgContext )
1648         CGContextRotateCTM( m_cgContext , angle );
1649     else
1650         m_windowTransform = CGAffineTransformRotate(m_windowTransform,angle);
1651 }
1652
1653 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1654 {
1655     EnsureIsValid();
1656
1657     CGImageRef image = (CGImageRef)( bmp.CreateCGImage() );
1658     HIRect r = CGRectMake( x , y , w , h );
1659     if ( bmp.GetDepth() == 1 )
1660     {
1661         // is is a mask, the '1' in the mask tell where to draw the current brush
1662         if (  !m_brush.IsNull() )
1663         {
1664             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1665             {
1666                 // TODO clip to mask
1667             /*
1668                 CGContextSaveGState( m_cgContext );
1669                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1670                 CGContextClip( m_cgContext );
1671                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1672                 CGContextRestoreGState( m_cgContext);
1673             */
1674             }
1675             else
1676             {
1677                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1678                 wxMacDrawCGImage( m_cgContext , &r , image );
1679             }
1680         }
1681     }
1682     else
1683     {
1684         wxMacDrawCGImage( m_cgContext , &r , image );
1685     }
1686     CGImageRelease( image );
1687 }
1688
1689 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1690 {
1691     EnsureIsValid();
1692
1693     CGRect r = CGRectMake( 00 , 00 , w , h );
1694     CGContextSaveGState( m_cgContext );
1695     CGContextTranslateCTM( m_cgContext, x , y + h );
1696     CGContextScaleCTM( m_cgContext, 1, -1 );
1697     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1698         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1699     CGContextRestoreGState( m_cgContext );
1700 }
1701
1702 void wxMacCoreGraphicsContext::PushState()
1703 {
1704     EnsureIsValid();
1705
1706     CGContextSaveGState( m_cgContext );
1707 }
1708
1709 void wxMacCoreGraphicsContext::PopState()
1710 {
1711     EnsureIsValid();
1712
1713     CGContextRestoreGState( m_cgContext );
1714 }
1715
1716 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1717 {
1718     if ( m_font.IsNull() )
1719         return;
1720
1721     EnsureIsValid();
1722 #ifdef wxMAC_USE_CORE_TEXT
1723     // TODO core text implementation here
1724 #elif defined(wxMAC_USE_ATSU_TEXT)
1725     DrawText(str, x, y, 0.0);
1726 #elif defined(WXMAC_USE_CG_TEXT)
1727     // TODO core graphics text implementation here
1728 #endif
1729 }
1730
1731 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1732 {
1733     if ( m_font.IsNull() )
1734         return;
1735
1736     EnsureIsValid();
1737 #ifdef wxMAC_USE_CORE_TEXT
1738     // default implementation takes care of rotation and calls non rotated DrawText afterwards
1739     wxGraphicsContext::DrawText( str, x, y, angle );
1740 #elif defined(wxMAC_USE_ATSU_TEXT)
1741     OSStatus status = noErr;
1742     ATSUTextLayout atsuLayout;
1743     UniCharCount chars = str.length();
1744     UniChar* ubuf = NULL;
1745
1746 #if SIZEOF_WCHAR_T == 4
1747     wxMBConvUTF16 converter;
1748 #if wxUSE_UNICODE
1749     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1750     ubuf = (UniChar*) malloc( unicharlen + 2 );
1751     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1752 #else
1753     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1754     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1755     ubuf = (UniChar*) malloc( unicharlen + 2 );
1756     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1757 #endif
1758     chars = unicharlen / 2;
1759 #else
1760 #if wxUSE_UNICODE
1761     ubuf = (UniChar*) str.wc_str();
1762 #else
1763     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1764     chars = wxWcslen( wchar.data() );
1765     ubuf = (UniChar*) wchar.data();
1766 #endif
1767 #endif
1768
1769     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1770     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1771         &chars , &style , &atsuLayout );
1772
1773     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
1774
1775     status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1776     wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1777
1778     int iAngle = int( angle * RAD2DEG );
1779     if ( abs(iAngle) > 0 )
1780     {
1781         Fixed atsuAngle = IntToFixed( iAngle );
1782         ATSUAttributeTag atsuTags[] =
1783         {
1784             kATSULineRotationTag ,
1785         };
1786         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1787         {
1788             sizeof( Fixed ) ,
1789         };
1790         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1791         {
1792             &atsuAngle ,
1793         };
1794         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1795             atsuTags, atsuSizes, atsuValues );
1796     }
1797
1798     {
1799         ATSUAttributeTag atsuTags[] =
1800         {
1801             kATSUCGContextTag ,
1802         };
1803         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1804         {
1805             sizeof( CGContextRef ) ,
1806         };
1807         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1808         {
1809             &m_cgContext ,
1810         };
1811         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1812             atsuTags, atsuSizes, atsuValues );
1813     }
1814
1815     ATSUTextMeasurement textBefore, textAfter;
1816     ATSUTextMeasurement ascent, descent;
1817
1818     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1819         &textBefore , &textAfter, &ascent , &descent );
1820
1821     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1822
1823     Rect rect;
1824     x += (int)(sin(angle) * FixedToInt(ascent));
1825     y += (int)(cos(angle) * FixedToInt(ascent));
1826
1827     status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1828         IntToFixed(x) , IntToFixed(y) , &rect );
1829     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1830
1831     CGContextSaveGState(m_cgContext);
1832     CGContextTranslateCTM(m_cgContext, x, y);
1833     CGContextScaleCTM(m_cgContext, 1, -1);
1834     status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1835         IntToFixed(0) , IntToFixed(0) );
1836
1837     wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
1838
1839     CGContextRestoreGState(m_cgContext);
1840
1841     ::ATSUDisposeTextLayout(atsuLayout);
1842
1843 #if SIZEOF_WCHAR_T == 4
1844     free( ubuf );
1845 #endif
1846 #elif defined(WXMAC_USE_CG_TEXT)
1847     // default implementation takes care of rotation and calls non rotated DrawText afterwards
1848     wxGraphicsContext::DrawText( str, x, y, angle );
1849 #endif
1850 }
1851
1852 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1853                             wxDouble *descent, wxDouble *externalLeading ) const
1854 {
1855     wxCHECK_RET( !m_font.IsNull(), wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
1856
1857     if ( width )
1858         *width = 0;
1859     if ( height )
1860         *height = 0;
1861     if ( descent )
1862         *descent = 0;
1863     if ( externalLeading )
1864         *externalLeading = 0;
1865
1866     if (str.empty())
1867         return;
1868
1869 #ifdef wxMAC_USE_CORE_TEXT
1870     // TODO core text implementation here
1871 #elif defined(wxMAC_USE_ATSU_TEXT)
1872     OSStatus status = noErr;
1873
1874     ATSUTextLayout atsuLayout;
1875     UniCharCount chars = str.length();
1876     UniChar* ubuf = NULL;
1877
1878 #if SIZEOF_WCHAR_T == 4
1879     wxMBConvUTF16 converter;
1880 #if wxUSE_UNICODE
1881     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1882     ubuf = (UniChar*) malloc( unicharlen + 2 );
1883     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1884 #else
1885     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1886     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1887     ubuf = (UniChar*) malloc( unicharlen + 2 );
1888     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1889 #endif
1890     chars = unicharlen / 2;
1891 #else
1892 #if wxUSE_UNICODE
1893     ubuf = (UniChar*) str.wc_str();
1894 #else
1895     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1896     chars = wxWcslen( wchar.data() );
1897     ubuf = (UniChar*) wchar.data();
1898 #endif
1899 #endif
1900
1901     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1902     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1903         &chars , &style , &atsuLayout );
1904
1905     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
1906
1907     ATSUTextMeasurement textBefore, textAfter;
1908     ATSUTextMeasurement textAscent, textDescent;
1909
1910     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1911         &textBefore , &textAfter, &textAscent , &textDescent );
1912
1913     if ( height )
1914         *height = FixedToInt(textAscent + textDescent);
1915     if ( descent )
1916         *descent = FixedToInt(textDescent);
1917     if ( externalLeading )
1918         *externalLeading = 0;
1919     if ( width )
1920         *width = FixedToInt(textAfter - textBefore);
1921
1922     ::ATSUDisposeTextLayout(atsuLayout);
1923 #if SIZEOF_WCHAR_T == 4
1924     free( ubuf ) ;
1925 #endif
1926 #elif defined(WXMAC_USE_CG_TEXT)
1927     // TODO core graphics text implementation here
1928 #endif
1929 }
1930
1931 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1932 {
1933     widths.Empty();
1934     widths.Add(0, text.length());
1935
1936     if (text.empty())
1937         return;
1938
1939 #ifdef wxMAC_USE_CORE_TEXT
1940     // TODO core text implementation here
1941 #elif defined(wxMAC_USE_ATSU_TEXT)
1942     ATSUTextLayout atsuLayout;
1943     UniCharCount chars = text.length();
1944     UniChar* ubuf = NULL;
1945
1946 #if SIZEOF_WCHAR_T == 4
1947     wxMBConvUTF16 converter;
1948 #if wxUSE_UNICODE
1949     size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
1950     ubuf = (UniChar*) malloc( unicharlen + 2 );
1951     converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );
1952 #else
1953     const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1954     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1955     ubuf = (UniChar*) malloc( unicharlen + 2 );
1956     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1957 #endif
1958     chars = unicharlen / 2;
1959 #else
1960 #if wxUSE_UNICODE
1961     ubuf = (UniChar*) text.wc_str();
1962 #else
1963     wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1964     chars = wxWcslen( wchar.data() );
1965     ubuf = (UniChar*) wchar.data();
1966 #endif
1967 #endif
1968
1969     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1970     ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1971         &chars , &style , &atsuLayout );
1972
1973     for ( int pos = 0; pos < (int)chars; pos ++ )
1974     {
1975         unsigned long actualNumberOfBounds = 0;
1976         ATSTrapezoid glyphBounds;
1977
1978         // We get a single bound, since the text should only require one. If it requires more, there is an issue
1979         OSStatus result;
1980         result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
1981             kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
1982         if (result != noErr || actualNumberOfBounds != 1 )
1983             return;
1984
1985         widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
1986         //unsigned char uch = s[i];
1987     }
1988
1989     ::ATSUDisposeTextLayout(atsuLayout);
1990 #if SIZEOF_WCHAR_T == 4
1991     free( ubuf ) ;
1992 #endif
1993 #elif defined(WXMAC_USE_CG_TEXT)
1994     // TODO core graphics text implementation here
1995 #endif
1996 }
1997
1998 void * wxMacCoreGraphicsContext::GetNativeContext()
1999 {
2000     return m_cgContext;
2001 }
2002
2003 // concatenates this transform with the current transform of this context
2004 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
2005 {
2006     if ( m_cgContext )
2007         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2008     else
2009         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
2010 }
2011
2012 // sets the transform of this context
2013 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
2014 {
2015     if ( m_cgContext )
2016     {
2017         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2018         transform = CGAffineTransformInvert( transform ) ;
2019         CGContextConcatCTM( m_cgContext, transform);
2020         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2021     }
2022     else
2023     {
2024         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
2025     }
2026 }
2027
2028 // gets the matrix of this context
2029 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
2030 {
2031     wxGraphicsMatrix m = CreateMatrix();
2032     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
2033         CGContextGetCTM( m_cgContext ));
2034     return m;
2035 }
2036
2037 //
2038 // Renderer
2039 //
2040
2041 //-----------------------------------------------------------------------------
2042 // wxMacCoreGraphicsRenderer declaration
2043 //-----------------------------------------------------------------------------
2044
2045 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2046 {
2047 public :
2048     wxMacCoreGraphicsRenderer() {}
2049
2050     virtual ~wxMacCoreGraphicsRenderer() {}
2051
2052     // Context
2053
2054     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2055
2056     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2057
2058     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2059
2060     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2061
2062     virtual wxGraphicsContext * CreateMeasuringContext();
2063
2064     // Path
2065
2066     virtual wxGraphicsPath CreatePath();
2067
2068     // Matrix
2069
2070     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2071         wxDouble tx=0.0, wxDouble ty=0.0);
2072
2073
2074     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2075
2076     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2077
2078     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2079     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2080         const wxColour&c1, const wxColour&c2) ;
2081
2082     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2083     // with radius r and color cColor
2084     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2085         const wxColour &oColor, const wxColour &cColor) ;
2086
2087    // sets the font
2088     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2089
2090 private :
2091     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2092 } ;
2093
2094 //-----------------------------------------------------------------------------
2095 // wxMacCoreGraphicsRenderer implementation
2096 //-----------------------------------------------------------------------------
2097
2098 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2099
2100 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2101
2102 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2103 {
2104     return &gs_MacCoreGraphicsRenderer;
2105 }
2106
2107 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc)
2108 {
2109     wxMemoryDC* mdc = wxDynamicCast(&dc, wxMemoryDC);
2110     if ( mdc )
2111     {
2112         return new wxMacCoreGraphicsContext(this,
2113             (CGContextRef)mdc->GetGraphicsContext()->GetNativeContext());
2114     }
2115     else
2116     {
2117         return new wxMacCoreGraphicsContext(this,(CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
2118     }
2119 }
2120
2121 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2122 {
2123     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2124 }
2125
2126
2127 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2128 {
2129     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
2130 }
2131
2132 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2133 {
2134     return new wxMacCoreGraphicsContext(this, window );
2135 }
2136
2137 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2138 {
2139     return new wxMacCoreGraphicsContext(this);
2140 }
2141
2142 // Path
2143
2144 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2145 {
2146     wxGraphicsPath m;
2147     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2148     return m;
2149 }
2150
2151
2152 // Matrix
2153
2154 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2155     wxDouble tx, wxDouble ty)
2156 {
2157     wxGraphicsMatrix m;
2158     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2159     data->Set( a,b,c,d,tx,ty ) ;
2160     m.SetRefData(data);
2161     return m;
2162 }
2163
2164 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2165 {
2166     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
2167         return wxNullGraphicsPen;
2168     else
2169     {
2170         wxGraphicsPen p;
2171         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2172         return p;
2173     }
2174 }
2175
2176 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2177 {
2178     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2179         return wxNullGraphicsBrush;
2180     else
2181     {
2182         wxGraphicsBrush p;
2183         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2184         return p;
2185     }
2186 }
2187
2188 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2189 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2190     const wxColour&c1, const wxColour&c2)
2191 {
2192     wxGraphicsBrush p;
2193     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2194     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
2195     p.SetRefData(d);
2196     return p;
2197 }
2198
2199 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2200 // with radius r and color cColor
2201 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2202     const wxColour &oColor, const wxColour &cColor)
2203 {
2204     wxGraphicsBrush p;
2205     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2206     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2207     p.SetRefData(d);
2208     return p;
2209 }
2210
2211 // sets the font
2212 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2213 {
2214     if ( font.Ok() )
2215     {
2216         wxGraphicsFont p;
2217         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2218         return p;
2219     }
2220     else
2221         return wxNullGraphicsFont;
2222 }
2223