src/mac/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/dccg.cpp
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_GRAPHICS_CONTEXT && wxMAC_USE_CORE_GRAPHICS
  15
  16 #include "wx/graphics.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/dcclient.h"
  20     #include "wx/log.h"
  21     #include "wx/region.h"
  22 #endif
  23
  24 #include "wx/mac/uma.h"
  25
  26 #ifdef __MSL__
  27     #if __MSL__ >= 0x6000
  28         #include "math.h"
  29         // in case our functions were defined outside std, we make it known all the same
  30         namespace std { }
  31         using namespace std;
  32     #endif
  33 #endif
  34
  35 #include "wx/mac/private.h"
  36
  37 #if MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_4
  38 typedef float CGFloat;
  39 #endif
  40
  41 //-----------------------------------------------------------------------------
  42 // constants
  43 //-----------------------------------------------------------------------------
  44
  45 #if !defined( __DARWIN__ ) || defined(__MWERKS__)
  46 #ifndef M_PI
  47 const double M_PI = 3.14159265358979;
  48 #endif
  49 #endif
  50
  51 static const double RAD2DEG = 180.0 / M_PI;
  52
  53 //
  54 // Pen, Brushes and Fonts
  55 //
  56
  57 #pragma mark -
  58 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
  59
  60 // CGPattern wrapper class: always allocate on heap, never call destructor
  61
  62 class wxMacCoreGraphicsPattern
  63 {
  64 public :
  65     wxMacCoreGraphicsPattern() {}
  66
  67     // is guaranteed to be called only with a non-Null CGContextRef
  68     virtual void Render( CGContextRef ctxRef ) = 0;
  69
  70     operator CGPatternRef() const { return m_patternRef; }
  71
  72 protected :
  73     virtual ~wxMacCoreGraphicsPattern()
  74     {
  75         // as this is called only when the m_patternRef is been released;
  76         // don't release it again
  77     }
  78
  79     static void _Render( void *info, CGContextRef ctxRef )
  80     {
  81         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
  82         if ( self && ctxRef )
  83             self->Render( ctxRef );
  84     }
  85
  86     static void _Dispose( void *info )
  87     {
  88         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
  89         delete self;
  90     }
  91
  92     CGPatternRef m_patternRef;
  93
  94     static const CGPatternCallbacks ms_Callbacks;
  95 };
  96
  97 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
  98
  99 class ImagePattern : public wxMacCoreGraphicsPattern
 100 {
 101 public :
 102     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 103     {
 104         wxASSERT( bmp && bmp->Ok() );
 105
 106         Init( (CGImageRef) bmp->CGImageCreate() , transform );
 107     }
 108
 109     // ImagePattern takes ownership of CGImageRef passed in
 110     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 111     {
 112         if ( image )
 113             CFRetain( image );
 114
 115         Init( image , transform );
 116     }
 117
 118     virtual void Render( CGContextRef ctxRef )
 119     {
 120         if (m_image != NULL)
 121             HIViewDrawCGImage( ctxRef, &m_imageBounds, m_image );
 122     }
 123
 124 protected :
 125     void Init( CGImageRef image, const CGAffineTransform& transform )
 126     {
 127         m_image = image;
 128         if ( m_image )
 129         {
 130             m_imageBounds = CGRectMake( 0.0, 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 131             m_patternRef = CGPatternCreate(
 132                 this , m_imageBounds, transform ,
 133                 m_imageBounds.size.width, m_imageBounds.size.height,
 134                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 135         }
 136     }
 137
 138     virtual ~ImagePattern()
 139     {
 140         if ( m_image )
 141             CGImageRelease( m_image );
 142     }
 143
 144     CGImageRef m_image;
 145     CGRect m_imageBounds;
 146 };
 147
 148 class HatchPattern : public wxMacCoreGraphicsPattern
 149 {
 150 public :
 151     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 152     {
 153         m_hatch = hatchstyle;
 154         m_imageBounds = CGRectMake( 0.0, 0.0, 8.0 , 8.0 );
 155         m_patternRef = CGPatternCreate(
 156             this , m_imageBounds, transform ,
 157             m_imageBounds.size.width, m_imageBounds.size.height,
 158             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 159     }
 160
 161     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 162     {
 163 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
 164         if ( UMAGetSystemVersion() >= 0x1040 )
 165         {
 166             CGContextStrokeLineSegments( ctxRef , pts , count );
 167         }
 168         else
 169 #endif
 170         {
 171             CGContextBeginPath( ctxRef );
 172             for (size_t i = 0; i < count; i += 2)
 173             {
 174                 CGContextMoveToPoint(ctxRef, pts[i].x, pts[i].y);
 175                 CGContextAddLineToPoint(ctxRef, pts[i+1].x, pts[i+1].y);
 176             }
 177             CGContextStrokePath(ctxRef);
 178         }
 179     }
 180
 181     virtual void Render( CGContextRef ctxRef )
 182     {
 183         switch ( m_hatch )
 184         {
 185             case wxBDIAGONAL_HATCH :
 186                 {
 187                     CGPoint pts[] =
 188                     {
 189                     { 8.0 , 0.0 } , { 0.0 , 8.0 }
 190                     };
 191                     StrokeLineSegments( ctxRef , pts , 2 );
 192                 }
 193                 break;
 194
 195             case wxCROSSDIAG_HATCH :
 196                 {
 197                     CGPoint pts[] =
 198                     {
 199                         { 0.0 , 0.0 } , { 8.0 , 8.0 } ,
 200                         { 8.0 , 0.0 } , { 0.0 , 8.0 }
 201                     };
 202                     StrokeLineSegments( ctxRef , pts , 4 );
 203                 }
 204                 break;
 205
 206             case wxFDIAGONAL_HATCH :
 207                 {
 208                     CGPoint pts[] =
 209                     {
 210                     { 0.0 , 0.0 } , { 8.0 , 8.0 }
 211                     };
 212                     StrokeLineSegments( ctxRef , pts , 2 );
 213                 }
 214                 break;
 215
 216             case wxCROSS_HATCH :
 217                 {
 218                     CGPoint pts[] =
 219                     {
 220                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 221                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 222                     };
 223                     StrokeLineSegments( ctxRef , pts , 4 );
 224                 }
 225                 break;
 226
 227             case wxHORIZONTAL_HATCH :
 228                 {
 229                     CGPoint pts[] =
 230                     {
 231                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 232                     };
 233                     StrokeLineSegments( ctxRef , pts , 2 );
 234                 }
 235                 break;
 236
 237             case wxVERTICAL_HATCH :
 238                 {
 239                     CGPoint pts[] =
 240                     {
 241                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 242                     };
 243                     StrokeLineSegments( ctxRef , pts , 2 );
 244                 }
 245                 break;
 246
 247             default:
 248                 break;
 249         }
 250     }
 251
 252 protected :
 253     virtual ~HatchPattern() {}
 254
 255     CGRect      m_imageBounds;
 256     int         m_hatch;
 257 };
 258
 259 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 260 {
 261 public:
 262     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 263     ~wxMacCoreGraphicsPenData();
 264
 265     void Init();
 266     virtual void Apply( wxGraphicsContext* context );
 267     virtual wxDouble GetWidth() { return m_width; }
 268
 269 protected :
 270     CGLineCap m_cap;
 271     wxMacCFRefHolder<CGColorRef> m_color;
 272     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 273
 274     CGLineJoin m_join;
 275     CGFloat m_width;
 276
 277     int m_count;
 278     const CGFloat *m_lengths;
 279     CGFloat *m_userLengths;
 280
 281
 282     bool m_isPattern;
 283     wxMacCFRefHolder<CGPatternRef> m_pattern;
 284     CGFloat* m_patternColorComponents;
 285 };
 286
 287 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 288     wxGraphicsObjectRefData( renderer )
 289 {
 290     Init();
 291
 292     float components[4] = { pen.GetColour().Red() / 255.0 , pen.GetColour().Green() / 255.0 ,
 293             pen.GetColour().Blue() / 255.0 , pen.GetColour().Alpha() / 255.0 } ;
 294     m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 295
 296     // TODO: * m_dc->m_scaleX
 297     m_width = pen.GetWidth();
 298     if (m_width <= 0.0)
 299         m_width = 0.1;
 300
 301     switch ( pen.GetCap() )
 302     {
 303         case wxCAP_ROUND :
 304             m_cap = kCGLineCapRound;
 305             break;
 306
 307         case wxCAP_PROJECTING :
 308             m_cap = kCGLineCapSquare;
 309             break;
 310
 311         case wxCAP_BUTT :
 312             m_cap = kCGLineCapButt;
 313             break;
 314
 315         default :
 316             m_cap = kCGLineCapButt;
 317             break;
 318     }
 319
 320     switch ( pen.GetJoin() )
 321     {
 322         case wxJOIN_BEVEL :
 323             m_join = kCGLineJoinBevel;
 324             break;
 325
 326         case wxJOIN_MITER :
 327             m_join = kCGLineJoinMiter;
 328             break;
 329
 330         case wxJOIN_ROUND :
 331             m_join = kCGLineJoinRound;
 332             break;
 333
 334         default :
 335             m_join = kCGLineJoinMiter;
 336             break;
 337     }
 338
 339     const CGFloat dashUnit = m_width < 1.0 ? 1.0 : m_width;
 340
 341     const CGFloat dotted[] = { dashUnit , dashUnit + 2.0 };
 342     static const CGFloat short_dashed[] = { 9.0 , 6.0 };
 343     static const CGFloat dashed[] = { 19.0 , 9.0 };
 344     static const CGFloat dotted_dashed[] = { 9.0 , 6.0 , 3.0 , 3.0 };
 345
 346     switch ( pen.GetStyle() )
 347     {
 348         case wxSOLID :
 349             break;
 350
 351         case wxDOT :
 352             m_count = WXSIZEOF(dotted);
 353             m_userLengths = new CGFloat[ m_count ] ;
 354             memcpy( m_userLengths, dotted, sizeof(dotted) );
 355             m_lengths = m_userLengths;
 356             break;
 357
 358         case wxLONG_DASH :
 359             m_count = WXSIZEOF(dashed);
 360             m_lengths = dashed;
 361             break;
 362
 363         case wxSHORT_DASH :
 364             m_count = WXSIZEOF(short_dashed);
 365             m_lengths = short_dashed;
 366             break;
 367
 368         case wxDOT_DASH :
 369             m_count = WXSIZEOF(dotted_dashed);
 370             m_lengths = dotted_dashed;
 371             break;
 372
 373         case wxUSER_DASH :
 374             wxDash *dashes;
 375             m_count = pen.GetDashes( &dashes );
 376             if ((dashes != NULL) && (m_count > 0))
 377             {
 378                 m_userLengths = new CGFloat[m_count];
 379                 for ( int i = 0; i < m_count; ++i )
 380                 {
 381                     m_userLengths[i] = dashes[i] * dashUnit;
 382
 383                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 384                         m_userLengths[i] = dashUnit + 2.0;
 385                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 386                         m_userLengths[i] = dashUnit;
 387                 }
 388             }
 389             m_lengths = m_userLengths;
 390             break;
 391
 392         case wxSTIPPLE :
 393             {
 394                 wxBitmap* bmp = pen.GetStipple();
 395                 if ( bmp && bmp->Ok() )
 396                 {
 397                     m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 398                     m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 399                     m_patternColorComponents = new CGFloat[1] ;
 400                     m_patternColorComponents[0] = 1.0;
 401                     m_isPattern = true;
 402                 }
 403             }
 404             break;
 405
 406         default :
 407             {
 408                 m_isPattern = true;
 409                 m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 410                 m_pattern.Set( *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 411                 m_patternColorComponents = new CGFloat[4] ;
 412                 m_patternColorComponents[0] = pen.GetColour().Red() / 255.0;
 413                 m_patternColorComponents[1] = pen.GetColour().Green() / 255.0;
 414                 m_patternColorComponents[2] = pen.GetColour().Blue() / 255.0;
 415                 m_patternColorComponents[3] =  pen.GetColour().Alpha() / 255.0;
 416             }
 417             break;
 418     }
 419     if ((m_lengths != NULL) && (m_count > 0))
 420     {
 421         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 422         m_cap = kCGLineCapButt;
 423     }
 424 }
 425
 426 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 427 {
 428     delete[] m_userLengths;
 429     delete[] m_patternColorComponents;
 430 }
 431
 432 void wxMacCoreGraphicsPenData::Init()
 433 {
 434     m_lengths = NULL;
 435     m_userLengths = NULL;
 436     m_width = 0;
 437     m_count = 0;
 438     m_patternColorComponents = NULL;
 439     m_isPattern = false;
 440 }
 441
 442 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 443 {
 444     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 445     CGContextSetLineWidth( cg , m_width );
 446     CGContextSetLineJoin( cg , m_join );
 447
 448     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 449     CGContextSetLineCap( cg , m_cap );
 450
 451     if ( m_isPattern )
 452     {
 453         CGAffineTransform matrix = CGContextGetCTM( cg );
 454         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 455         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 456         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 457     }
 458     else
 459     {
 460         CGContextSetStrokeColorWithColor( cg , m_color );
 461     }
 462 }
 463
 464 //
 465 // Brush
 466 //
 467
 468 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 469 {
 470 public:
 471     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 472     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 473     ~wxMacCoreGraphicsBrushData ();
 474
 475     virtual void Apply( wxGraphicsContext* context );
 476     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 477         const wxColour&c1, const wxColour&c2 );
 478     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 479     const wxColour &oColor, const wxColour &cColor );
 480
 481     virtual bool IsShading() { return m_isShading; }
 482     CGShadingRef GetShading() { return m_shading; }
 483 protected:
 484     CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
 485     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 486     virtual void Init();
 487
 488     wxMacCFRefHolder<CGColorRef> m_color;
 489     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 490
 491     bool m_isPattern;
 492     wxMacCFRefHolder<CGPatternRef> m_pattern;
 493     CGFloat* m_patternColorComponents;
 494
 495     bool m_isShading;
 496     CGFunctionRef m_gradientFunction;
 497     CGShadingRef m_shading;
 498     CGFloat *m_gradientComponents;
 499 };
 500
 501 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 502 {
 503     Init();
 504 }
 505
 506 void wxMacCoreGraphicsBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 507         const wxColour&c1, const wxColour&c2 )
 508 {
 509     m_gradientFunction = CreateGradientFunction( c1, c2 );
 510     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake(x1,y1), CGPointMake(x2,y2), m_gradientFunction, true, true ) ;
 511     m_isShading = true ;
 512 }
 513
 514 void wxMacCoreGraphicsBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 515     const wxColour &oColor, const wxColour &cColor )
 516 {
 517     m_gradientFunction = CreateGradientFunction( oColor, cColor );
 518     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake(xo,yo), 0, CGPointMake(xc,yc), radius, m_gradientFunction, true, true ) ;
 519     m_isShading = true ;
 520 }
 521
 522 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer )
 523 {
 524     Init();
 525
 526     if ( brush.GetStyle() == wxSOLID )
 527     {
 528         if ( brush.MacGetBrushKind() == kwxMacBrushTheme )
 529         {
 530 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
 531             if ( HIThemeBrushCreateCGColor != 0 )
 532             {
 533                 CGColorRef color ;
 534                 HIThemeBrushCreateCGColor( brush.MacGetTheme(), &color );
 535                 m_color.Set( color ) ;
 536             }
 537             else
 538 #endif
 539             {
 540                 // as close as we can get, unfortunately < 10.4 things get difficult
 541                 RGBColor color;
 542                 GetThemeBrushAsColor( brush.MacGetTheme(), 32, true, &color );
 543                 float components[4] = {  (CGFloat) color.red / 65536,
 544                     (CGFloat) color.green / 65536, (CGFloat) color.blue / 65536, 1 } ;
 545                 m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 546             }
 547         }
 548         else
 549         {
 550             float components[4] = { brush.GetColour().Red() / 255.0 , brush.GetColour().Green() / 255.0 ,
 551                 brush.GetColour().Blue() / 255.0 , brush.GetColour().Alpha() / 255.0 } ;
 552             m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 553         }
 554     }
 555     else if ( brush.IsHatch() )
 556     {
 557         m_isPattern = true;
 558         m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 559         m_pattern.Set( *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 560
 561         m_patternColorComponents = new CGFloat[4] ;
 562         m_patternColorComponents[0] = brush.GetColour().Red() / 255.0;
 563         m_patternColorComponents[1] = brush.GetColour().Green() / 255.0;
 564         m_patternColorComponents[2] = brush.GetColour().Blue() / 255.0;
 565         m_patternColorComponents[3] = brush.GetColour().Alpha() / 255.0;
 566     }
 567     else
 568     {
 569         // now brush is a bitmap
 570         wxBitmap* bmp = brush.GetStipple();
 571         if ( bmp && bmp->Ok() )
 572         {
 573             m_isPattern = true;
 574             m_patternColorComponents = new CGFloat[1] ;
 575             m_patternColorComponents[0] = 1.0;
 576             m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 577             m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 578         }
 579     }
 580 }
 581
 582 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 583 {
 584     if ( m_shading )
 585         CGShadingRelease(m_shading);
 586
 587     if( m_gradientFunction )
 588         CGFunctionRelease(m_gradientFunction);
 589
 590     delete[] m_gradientComponents;
 591     delete[] m_patternColorComponents;
 592 }
 593
 594 void wxMacCoreGraphicsBrushData::Init()
 595 {
 596     m_patternColorComponents = NULL;
 597     m_gradientFunction = NULL;
 598     m_shading = NULL;
 599     m_isPattern = false;
 600     m_gradientComponents = NULL;
 601     m_isShading = false;
 602 }
 603
 604 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 605 {
 606     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 607
 608     if ( m_isShading )
 609     {
 610         // nothing to set as shades are processed by clipping using the path and filling
 611     }
 612     else
 613     {
 614         if ( m_isPattern )
 615         {
 616             CGAffineTransform matrix = CGContextGetCTM( cg );
 617             CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 618             CGContextSetFillColorSpace( cg , m_colorSpace );
 619             CGContextSetFillPattern( cg, m_pattern , m_patternColorComponents );
 620         }
 621         else
 622         {
 623             CGContextSetFillColorWithColor( cg, m_color );
 624         }
 625     }
 626 }
 627
 628 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 629 {
 630     CGFloat* colors = (CGFloat*) info ;
 631     CGFloat f = *in;
 632     for( int i = 0 ; i < 4 ; ++i )
 633     {
 634         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 635     }
 636 }
 637
 638 CGFunctionRef wxMacCoreGraphicsBrushData::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
 639 {
 640     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 641     static const CGFloat input_value_range [2] = { 0, 1 };
 642     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 643     m_gradientComponents = new CGFloat[8] ;
 644     m_gradientComponents[0] = c1.Red() / 255.0;
 645     m_gradientComponents[1] = c1.Green() / 255.0;
 646     m_gradientComponents[2] = c1.Blue() / 255.0;
 647     m_gradientComponents[3] = c1.Alpha() / 255.0;
 648     m_gradientComponents[4] = c2.Red() / 255.0;
 649     m_gradientComponents[5] = c2.Green() / 255.0;
 650     m_gradientComponents[6] = c2.Blue() / 255.0;
 651     m_gradientComponents[7] = c2.Alpha() / 255.0;
 652
 653     return CGFunctionCreate ( m_gradientComponents,  1,
 654                             input_value_range,
 655                             4,
 656                             output_value_ranges,
 657                             &callbacks);
 658 }
 659
 660 //
 661 // Font
 662 //
 663
 664 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 665 {
 666 public:
 667     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 668     ~wxMacCoreGraphicsFontData();
 669
 670     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 671 private :
 672     ATSUStyle m_macATSUIStyle;
 673 };
 674
 675 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 676 {
 677     m_macATSUIStyle = NULL;
 678
 679     OSStatus status;
 680
 681     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 682
 683     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 684
 685     // we need the scale here ...
 686
 687     Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
 688     RGBColor atsuColor = MAC_WXCOLORREF( col.GetPixel() );
 689     ATSUAttributeTag atsuTags[] =
 690     {
 691             kATSUSizeTag ,
 692             kATSUColorTag ,
 693     };
 694     ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 695     {
 696             sizeof( Fixed ) ,
 697             sizeof( RGBColor ) ,
 698     };
 699     ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 700     {
 701             &atsuSize ,
 702             &atsuColor ,
 703     };
 704
 705     status = ::ATSUSetAttributes(
 706         m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
 707         atsuTags, atsuSizes, atsuValues);
 708
 709     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 710 }
 711
 712 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 713 {
 714     if ( m_macATSUIStyle )
 715     {
 716         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 717         m_macATSUIStyle = NULL;
 718     }
 719 }
 720
 721 //
 722 // Graphics Matrix
 723 //
 724
 725 //-----------------------------------------------------------------------------
 726 // wxMacCoreGraphicsMatrix declaration
 727 //-----------------------------------------------------------------------------
 728
 729 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
 730 {
 731 public :
 732     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
 733
 734     virtual ~wxMacCoreGraphicsMatrixData() ;
 735
 736     virtual wxGraphicsObjectRefData *Clone() const ;
 737
 738     // concatenates the matrix
 739     virtual void Concat( const wxGraphicsMatrixData *t );
 740
 741     // sets the matrix to the respective values
 742     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 743         wxDouble tx=0.0, wxDouble ty=0.0);
 744
 745     // makes this the inverse matrix
 746     virtual void Invert();
 747
 748     // returns true if the elements of the transformation matrix are equal ?
 749     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 750
 751     // return true if this is the identity matrix
 752     virtual bool IsIdentity() const;
 753
 754     //
 755     // transformation
 756     //
 757
 758     // add the translation to this matrix
 759     virtual void Translate( wxDouble dx , wxDouble dy );
 760
 761     // add the scale to this matrix
 762     virtual void Scale( wxDouble xScale , wxDouble yScale );
 763
 764     // add the rotation to this matrix (radians)
 765     virtual void Rotate( wxDouble angle );
 766
 767     //
 768     // apply the transforms
 769     //
 770
 771     // applies that matrix to the point
 772     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 773
 774     // applies the matrix except for translations
 775     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 776
 777     // returns the native representation
 778     virtual void * GetNativeMatrix() const;
 779
 780 private :
 781     CGAffineTransform m_matrix;
 782 } ;
 783
 784 //-----------------------------------------------------------------------------
 785 // wxMacCoreGraphicsMatrix implementation
 786 //-----------------------------------------------------------------------------
 787
 788 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
 789 {
 790 }
 791
 792 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
 793 {
 794 }
 795
 796 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 797 {
 798     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
 799     m->m_matrix = m_matrix ;
 800     return m;
 801 }
 802
 803 // concatenates the matrix
 804 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 805 {
 806     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 807 }
 808
 809 // sets the matrix to the respective values
 810 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 811     wxDouble tx, wxDouble ty)
 812 {
 813     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 814 }
 815
 816 // makes this the inverse matrix
 817 void wxMacCoreGraphicsMatrixData::Invert()
 818 {
 819     m_matrix = CGAffineTransformInvert( m_matrix );
 820 }
 821
 822 // returns true if the elements of the transformation matrix are equal ?
 823 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 824 {
 825     const CGAffineTransform* tm = (CGAffineTransform*) t->GetNativeMatrix();
 826 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
 827     if ( CGAffineTransformEqualToTransform!=NULL )
 828     {
 829         return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 830     }
 831     else
 832 #endif
 833     {
 834         return (
 835             m_matrix.a == tm->a &&
 836             m_matrix.b == tm->b &&
 837             m_matrix.c == tm->c &&
 838             m_matrix.d == tm->d &&
 839             m_matrix.tx == tm->tx &&
 840             m_matrix.ty == tm->ty ) ;
 841     }
 842 }
 843
 844 // return true if this is the identity matrix
 845 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
 846 {
 847     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
 848         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
 849 }
 850
 851 //
 852 // transformation
 853 //
 854
 855 // add the translation to this matrix
 856 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
 857 {
 858     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
 859 }
 860
 861 // add the scale to this matrix
 862 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 863 {
 864     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
 865 }
 866
 867 // add the rotation to this matrix (radians)
 868 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
 869 {
 870     m_matrix = CGAffineTransformRotate( m_matrix, angle);
 871 }
 872
 873 //
 874 // apply the transforms
 875 //
 876
 877 // applies that matrix to the point
 878 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
 879 {
 880     CGPoint pt = CGPointApplyAffineTransform( CGPointMake(*x,*y), m_matrix);
 881
 882     *x = pt.x;
 883     *y = pt.y;
 884 }
 885
 886 // applies the matrix except for translations
 887 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
 888 {
 889     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake(*dx,*dy) , m_matrix );
 890     *dx = sz.width;
 891     *dy = sz.height;
 892 }
 893
 894 // returns the native representation
 895 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
 896 {
 897     return (void*) &m_matrix;
 898 }
 899
 900 //
 901 // Graphics Path
 902 //
 903
 904 //-----------------------------------------------------------------------------
 905 // wxMacCoreGraphicsPath declaration
 906 //-----------------------------------------------------------------------------
 907
 908 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
 909 {
 910 public :
 911     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
 912
 913     ~wxMacCoreGraphicsPathData();
 914
 915     virtual wxGraphicsObjectRefData *Clone() const;
 916
 917     // begins a new subpath at (x,y)
 918     virtual void MoveToPoint( wxDouble x, wxDouble y );
 919
 920     // adds a straight line from the current point to (x,y)
 921     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 922
 923     // adds a cubic Bezier curve from the current point, using two control points and an end point
 924     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 925
 926     // closes the current sub-path
 927     virtual void CloseSubpath();
 928
 929     // gets the last point of the current path, (0,0) if not yet set
 930     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 931
 932     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 933     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
 934
 935     //
 936     // These are convenience functions which - if not available natively will be assembled
 937     // using the primitives from above
 938     //
 939
 940     // adds a quadratic Bezier curve from the current point, using a control point and an end point
 941     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
 942
 943     // appends a rectangle as a new closed subpath
 944     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 945
 946     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 947     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 948
 949     // 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)
 950     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 951
 952     // adds another path
 953     virtual void AddPath( const wxGraphicsPathData* path );
 954
 955     // returns the native path
 956     virtual void * GetNativePath() const { return m_path; }
 957
 958     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 959     virtual void UnGetNativePath(void *p) const {}
 960
 961     // transforms each point of this path by the matrix
 962     virtual void Transform( const wxGraphicsMatrixData* matrix );
 963
 964     // gets the bounding box enclosing all points (possibly including control points)
 965     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
 966
 967     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
 968 private :
 969     CGMutablePathRef m_path;
 970 };
 971
 972 //-----------------------------------------------------------------------------
 973 // wxMacCoreGraphicsPath implementation
 974 //-----------------------------------------------------------------------------
 975
 976 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
 977 {
 978     if ( path )
 979         m_path = path;
 980     else
 981         m_path = CGPathCreateMutable();
 982 }
 983
 984 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
 985 {
 986     CGPathRelease( m_path );
 987 }
 988
 989 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
 990 {
 991     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
 992     return clone ;
 993 }
 994
 995
 996 // opens (starts) a new subpath
 997 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
 998 {
 999     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
1000 }
1001
1002 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1003 {
1004     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
1005 }
1006
1007 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1008 {
1009     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
1010 }
1011
1012 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1013 {
1014     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
1015 }
1016
1017 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1018 {
1019     CGRect cgRect = { { x , y } , { w , h } };
1020     CGPathAddRect( m_path , NULL , cgRect );
1021 }
1022
1023 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1024 {
1025     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1026 }
1027
1028 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1029 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1030 {
1031     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1032     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1033 }
1034
1035 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1036 {
1037     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1038 }
1039
1040 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1041 {
1042     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1043 }
1044
1045 // closes the current subpath
1046 void wxMacCoreGraphicsPathData::CloseSubpath()
1047 {
1048     CGPathCloseSubpath( m_path );
1049 }
1050
1051 // gets the last point of the current path, (0,0) if not yet set
1052 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1053 {
1054     CGPoint p = CGPathGetCurrentPoint( m_path );
1055     *x = p.x;
1056     *y = p.y;
1057 }
1058
1059 // transforms each point of this path by the matrix
1060 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1061 {
1062     CGMutablePathRef p = CGPathCreateMutable() ;
1063     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1064     CGPathRelease( m_path );
1065     m_path = p;
1066 }
1067
1068 // gets the bounding box enclosing all points (possibly including control points)
1069 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1070 {
1071     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1072     *x = bounds.origin.x;
1073     *y = bounds.origin.y;
1074     *w = bounds.size.width;
1075     *h = bounds.size.height;
1076 }
1077
1078 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, int fillStyle) const
1079 {
1080 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
1081     if ( CGPathContainsPoint!=NULL )
1082     {
1083         return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1084     }
1085     else
1086 #endif
1087     {
1088         // TODO : implementation for 10.3
1089         CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1090         return CGRectContainsPoint( bounds, CGPointMake(x,y) ) == 1;
1091     }
1092 }
1093
1094 //
1095 // Graphics Context
1096 //
1097
1098 //-----------------------------------------------------------------------------
1099 // wxMacCoreGraphicsContext declaration
1100 //-----------------------------------------------------------------------------
1101
1102 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1103 {
1104 public:
1105     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext );
1106
1107     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1108
1109     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1110
1111     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1112
1113     wxMacCoreGraphicsContext();
1114
1115     ~wxMacCoreGraphicsContext();
1116
1117     void Init();
1118
1119     // push the current state of the context, ie the transformation matrix on a stack
1120     virtual void PushState();
1121
1122     // pops a stored state from the stack
1123     virtual void PopState();
1124
1125     // clips drawings to the region
1126     virtual void Clip( const wxRegion &region );
1127
1128     // clips drawings to the rect
1129     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1130
1131     // resets the clipping to original extent
1132     virtual void ResetClip();
1133
1134     virtual void * GetNativeContext();
1135
1136     //
1137     // transformation
1138     //
1139
1140     // translate
1141     virtual void Translate( wxDouble dx , wxDouble dy );
1142
1143     // scale
1144     virtual void Scale( wxDouble xScale , wxDouble yScale );
1145
1146     // rotate (radians)
1147     virtual void Rotate( wxDouble angle );
1148
1149     // concatenates this transform with the current transform of this context
1150     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1151
1152     // sets the transform of this context
1153     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1154
1155     // gets the matrix of this context
1156     virtual wxGraphicsMatrix GetTransform() const;
1157     //
1158     // setting the paint
1159     //
1160
1161     // strokes along a path with the current pen
1162     virtual void StrokePath( const wxGraphicsPath &path );
1163
1164     // fills a path with the current brush
1165     virtual void FillPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1166
1167     // draws a path by first filling and then stroking
1168     virtual void DrawPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1169
1170     virtual bool ShouldOffset() const
1171     {
1172         int penwidth = 0 ;
1173         if ( !m_pen.IsNull() )
1174         {
1175             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1176             if ( penwidth == 0 )
1177                 penwidth = 1;
1178         }
1179         return ( penwidth % 2 ) == 1;
1180     }
1181     //
1182     // text
1183     //
1184
1185     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1186
1187     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1188
1189     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1190         wxDouble *descent, wxDouble *externalLeading ) const;
1191
1192     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1193
1194     //
1195     // image support
1196     //
1197
1198     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1199
1200     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1201
1202     void SetNativeContext( CGContextRef cg );
1203
1204     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1205     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1206
1207 private:
1208     void EnsureIsValid();
1209
1210     CGContextRef m_cgContext;
1211     WindowRef m_windowRef;
1212     bool m_releaseContext;
1213     CGAffineTransform m_windowTransform;
1214
1215     wxMacCFRefHolder<HIShapeRef> m_clipRgn;
1216 };
1217
1218 //-----------------------------------------------------------------------------
1219 // device context implementation
1220 //
1221 // more and more of the dc functionality should be implemented by calling
1222 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1223 // also coordinate conversions should be moved to native matrix ops
1224 //-----------------------------------------------------------------------------
1225
1226 // we always stock two context states, one at entry, to be able to preserve the
1227 // state we were called with, the other one after changing to HI Graphics orientation
1228 // (this one is used for getting back clippings etc)
1229
1230 //-----------------------------------------------------------------------------
1231 // wxMacCoreGraphicsContext implementation
1232 //-----------------------------------------------------------------------------
1233
1234 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1235
1236 void wxMacCoreGraphicsContext::Init()
1237 {
1238     m_cgContext = NULL;
1239     m_releaseContext = false;
1240     m_windowRef = NULL;
1241
1242     HIRect r = CGRectMake(0,0,0,0);
1243     m_clipRgn.Set(HIShapeCreateWithRect(&r));
1244 }
1245
1246 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext ) : wxGraphicsContext(renderer)
1247 {
1248     Init();
1249     SetNativeContext(cgcontext);
1250 }
1251
1252 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1253 {
1254     Init();
1255     m_windowRef = window;
1256 }
1257
1258 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1259 {
1260     Init();
1261     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1262     int originX , originY;
1263     originX = originY = 0;
1264     window->MacWindowToRootWindow( &originX , &originY );
1265     Rect bounds;
1266     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1267
1268     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1269     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1270     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1271 }
1272
1273 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1274 {
1275     Init();
1276 }
1277
1278 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1279 {
1280     Init();
1281     wxLogDebug(wxT("Illegal Constructor called"));
1282 }
1283
1284 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1285 {
1286     SetNativeContext(NULL);
1287 }
1288
1289 void wxMacCoreGraphicsContext::EnsureIsValid()
1290 {
1291     if ( !m_cgContext )
1292     {
1293         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1294         wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
1295
1296         CGContextConcatCTM( m_cgContext, m_windowTransform );
1297                 CGContextSaveGState( m_cgContext );
1298                 m_releaseContext = true;
1299                 if ( !HIShapeIsEmpty(m_clipRgn) )
1300                 {
1301             // the clip region is in device coordinates, so we convert this again to user coordinates
1302             wxMacCFRefHolder<HIMutableShapeRef> hishape ;
1303             hishape.Set( HIShapeCreateMutableCopy( m_clipRgn ) );
1304             CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1305             HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1306                         HIShapeReplacePathInCGContext( hishape, m_cgContext );
1307                         CGContextClip( m_cgContext );
1308                 }
1309                 CGContextSaveGState( m_cgContext );
1310         }
1311 }
1312
1313
1314 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1315 {
1316     if( m_cgContext )
1317     {
1318         HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
1319         HIShapeReplacePathInCGContext( shape, m_cgContext );
1320         CGContextClip( m_cgContext );
1321         CFRelease( shape );
1322     }
1323     else
1324     {
1325         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1326         // to regions we try at least to have correct translations
1327         wxMacCFRefHolder<HIShapeRef> hishape ;
1328         hishape.Set( HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() ));
1329         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( hishape );
1330
1331         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1332         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1333         m_clipRgn.Set(mutableShape);
1334     }
1335 }
1336
1337 // clips drawings to the rect
1338 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1339 {
1340     HIRect r = CGRectMake( x , y , w , h );
1341     if ( m_cgContext )
1342     {
1343         CGContextClipToRect( m_cgContext, r );
1344     }
1345     else
1346     {
1347         // the clipping itself must be stored as device coordinates, otherwise
1348         // we cannot apply it back correctly
1349         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1350         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1351     }
1352 }
1353
1354     // resets the clipping to original extent
1355 void wxMacCoreGraphicsContext::ResetClip()
1356 {
1357     if ( m_cgContext )
1358     {
1359         // there is no way for clearing the clip, we can only revert to the stored
1360         // state, but then we have to make sure everything else is NOT restored
1361         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1362         CGContextRestoreGState( m_cgContext );
1363         CGContextSaveGState( m_cgContext );
1364         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1365         transformNew = CGAffineTransformInvert( transformNew ) ;
1366         CGContextConcatCTM( m_cgContext, transformNew);
1367         CGContextConcatCTM( m_cgContext, transform);
1368     }
1369     else
1370     {
1371         HIRect r = CGRectMake(0,0,0,0);
1372         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1373     }
1374 }
1375
1376 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1377 {
1378     if ( m_pen.IsNull() )
1379         return ;
1380
1381     EnsureIsValid();
1382
1383     bool offset = ShouldOffset();
1384     if ( offset )
1385         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1386
1387     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1388     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1389     CGContextStrokePath( m_cgContext );
1390
1391     if ( offset )
1392         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1393 }
1394
1395 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , int fillStyle )
1396 {
1397     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1398     {
1399         // when using shading, we cannot draw pen and brush at the same time
1400         // revert to the base implementation of first filling and then stroking
1401         wxGraphicsContext::DrawPath( path, fillStyle );
1402         return;
1403     }
1404
1405     CGPathDrawingMode mode = kCGPathFill ;
1406     if ( m_brush.IsNull() )
1407     {
1408         if ( m_pen.IsNull() )
1409             return;
1410         else
1411             mode = kCGPathStroke;
1412     }
1413     else
1414     {
1415         if ( m_pen.IsNull() )
1416         {
1417             if ( fillStyle == wxODDEVEN_RULE )
1418                 mode = kCGPathEOFill;
1419             else
1420                 mode = kCGPathFill;
1421         }
1422         else
1423         {
1424             if ( fillStyle == wxODDEVEN_RULE )
1425                 mode = kCGPathEOFillStroke;
1426             else
1427                 mode = kCGPathFillStroke;
1428         }
1429     }
1430
1431     EnsureIsValid();
1432
1433     if ( !m_brush.IsNull() )
1434         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1435     if ( !m_pen.IsNull() )
1436         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1437
1438     bool offset = ShouldOffset();
1439
1440     if ( offset )
1441         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1442
1443     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1444     CGContextDrawPath( m_cgContext , mode );
1445
1446     if ( offset )
1447         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1448 }
1449
1450 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , int fillStyle )
1451 {
1452     if ( m_brush.IsNull() )
1453         return;
1454
1455     EnsureIsValid();
1456
1457     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1458     {
1459         CGContextSaveGState( m_cgContext );
1460         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1461         CGContextClip( m_cgContext );
1462         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1463         CGContextRestoreGState( m_cgContext);
1464     }
1465     else
1466     {
1467         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1468         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1469         if ( fillStyle == wxODDEVEN_RULE )
1470             CGContextEOFillPath( m_cgContext );
1471         else
1472             CGContextFillPath( m_cgContext );
1473     }
1474 }
1475
1476 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1477 {
1478     // we allow either setting or clearing but not replacing
1479     wxASSERT( m_cgContext == NULL || cg == NULL );
1480
1481     if ( m_cgContext )
1482     {
1483         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1484         CGContextRestoreGState( m_cgContext );
1485         CGContextRestoreGState( m_cgContext );
1486         if ( m_releaseContext )
1487             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1488         else
1489             CGContextRelease(m_cgContext);
1490     }
1491
1492
1493     m_cgContext = cg;
1494
1495     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1496     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1497     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1498     // for this one operation.
1499
1500     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1501     // can be removed.
1502     if (m_cgContext)
1503     {
1504         CGContextRetain(m_cgContext);
1505         CGContextSaveGState( m_cgContext );
1506         CGContextSaveGState( m_cgContext );
1507         m_releaseContext = false;
1508     }
1509 }
1510
1511 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1512 {
1513     if ( m_cgContext )
1514         CGContextTranslateCTM( m_cgContext, dx, dy );
1515     else
1516         m_windowTransform = CGAffineTransformTranslate(m_windowTransform,dx,dy);
1517 }
1518
1519 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1520 {
1521     if ( m_cgContext )
1522         CGContextScaleCTM( m_cgContext , xScale , yScale );
1523     else
1524         m_windowTransform = CGAffineTransformScale(m_windowTransform,xScale,yScale);
1525 }
1526
1527 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1528 {
1529     if ( m_cgContext )
1530         CGContextRotateCTM( m_cgContext , angle );
1531     else
1532         m_windowTransform = CGAffineTransformRotate(m_windowTransform,angle);
1533 }
1534
1535 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1536 {
1537     EnsureIsValid();
1538
1539     CGImageRef image = (CGImageRef)( bmp.CGImageCreate() );
1540     HIRect r = CGRectMake( x , y , w , h );
1541     if ( bmp.GetDepth() == 1 )
1542     {
1543         // is is a mask, the '1' in the mask tell where to draw the current brush
1544         if (  !m_brush.IsNull() )
1545         {
1546             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1547             {
1548                 // TODO clip to mask
1549             /*
1550                 CGContextSaveGState( m_cgContext );
1551                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1552                 CGContextClip( m_cgContext );
1553                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1554                 CGContextRestoreGState( m_cgContext);
1555             */
1556             }
1557             else
1558             {
1559                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1560                 HIViewDrawCGImage( m_cgContext , &r , image );
1561             }
1562         }
1563     }
1564     else
1565     {
1566         HIViewDrawCGImage( m_cgContext , &r , image );
1567     }
1568     CGImageRelease( image );
1569 }
1570
1571 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1572 {
1573     EnsureIsValid();
1574
1575     CGRect r = CGRectMake( 00 , 00 , w , h );
1576     CGContextSaveGState( m_cgContext );
1577     CGContextTranslateCTM( m_cgContext, x , y + h );
1578     CGContextScaleCTM( m_cgContext, 1, -1 );
1579     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1580         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1581     CGContextRestoreGState( m_cgContext );
1582 }
1583
1584 void wxMacCoreGraphicsContext::PushState()
1585 {
1586     EnsureIsValid();
1587
1588     CGContextSaveGState( m_cgContext );
1589 }
1590
1591 void wxMacCoreGraphicsContext::PopState()
1592 {
1593     EnsureIsValid();
1594
1595     CGContextRestoreGState( m_cgContext );
1596 }
1597
1598 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1599 {
1600     DrawText(str, x, y, 0.0);
1601 }
1602
1603 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1604 {
1605     if ( m_font.IsNull() )
1606         return;
1607
1608     EnsureIsValid();
1609
1610     OSStatus status = noErr;
1611     ATSUTextLayout atsuLayout;
1612     UniCharCount chars = str.length();
1613     UniChar* ubuf = NULL;
1614
1615 #if SIZEOF_WCHAR_T == 4
1616     wxMBConvUTF16 converter;
1617 #if wxUSE_UNICODE
1618     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1619     ubuf = (UniChar*) malloc( unicharlen + 2 );
1620     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1621 #else
1622     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1623     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1624     ubuf = (UniChar*) malloc( unicharlen + 2 );
1625     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1626 #endif
1627     chars = unicharlen / 2;
1628 #else
1629 #if wxUSE_UNICODE
1630     ubuf = (UniChar*) str.wc_str();
1631 #else
1632     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1633     chars = wxWcslen( wchar.data() );
1634     ubuf = (UniChar*) wchar.data();
1635 #endif
1636 #endif
1637
1638     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1639     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1640         &chars , &style , &atsuLayout );
1641
1642     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
1643
1644     status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1645     wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1646
1647     int iAngle = int( angle * RAD2DEG );
1648     if ( abs(iAngle) > 0 )
1649     {
1650         Fixed atsuAngle = IntToFixed( iAngle );
1651         ATSUAttributeTag atsuTags[] =
1652         {
1653             kATSULineRotationTag ,
1654         };
1655         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1656         {
1657             sizeof( Fixed ) ,
1658         };
1659         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1660         {
1661             &atsuAngle ,
1662         };
1663         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1664             atsuTags, atsuSizes, atsuValues );
1665     }
1666
1667     {
1668         ATSUAttributeTag atsuTags[] =
1669         {
1670             kATSUCGContextTag ,
1671         };
1672         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1673         {
1674             sizeof( CGContextRef ) ,
1675         };
1676         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1677         {
1678             &m_cgContext ,
1679         };
1680         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1681             atsuTags, atsuSizes, atsuValues );
1682     }
1683
1684     ATSUTextMeasurement textBefore, textAfter;
1685     ATSUTextMeasurement ascent, descent;
1686
1687     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1688         &textBefore , &textAfter, &ascent , &descent );
1689
1690     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1691
1692     Rect rect;
1693     x += (int)(sin(angle) * FixedToInt(ascent));
1694     y += (int)(cos(angle) * FixedToInt(ascent));
1695
1696     status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1697         IntToFixed(x) , IntToFixed(y) , &rect );
1698     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1699
1700     CGContextSaveGState(m_cgContext);
1701     CGContextTranslateCTM(m_cgContext, x, y);
1702     CGContextScaleCTM(m_cgContext, 1, -1);
1703     status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1704         IntToFixed(0) , IntToFixed(0) );
1705
1706     wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
1707
1708     CGContextRestoreGState(m_cgContext);
1709
1710     ::ATSUDisposeTextLayout(atsuLayout);
1711
1712 #if SIZEOF_WCHAR_T == 4
1713     free( ubuf );
1714 #endif
1715 }
1716
1717 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1718                             wxDouble *descent, wxDouble *externalLeading ) const
1719 {
1720     wxCHECK_RET( !m_font.IsNull(), wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
1721
1722     OSStatus status = noErr;
1723
1724     ATSUTextLayout atsuLayout;
1725     UniCharCount chars = str.length();
1726     UniChar* ubuf = NULL;
1727
1728 #if SIZEOF_WCHAR_T == 4
1729     wxMBConvUTF16 converter;
1730 #if wxUSE_UNICODE
1731     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1732     ubuf = (UniChar*) malloc( unicharlen + 2 );
1733     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1734 #else
1735     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1736     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1737     ubuf = (UniChar*) malloc( unicharlen + 2 );
1738     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1739 #endif
1740     chars = unicharlen / 2;
1741 #else
1742 #if wxUSE_UNICODE
1743     ubuf = (UniChar*) str.wc_str();
1744 #else
1745     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1746     chars = wxWcslen( wchar.data() );
1747     ubuf = (UniChar*) wchar.data();
1748 #endif
1749 #endif
1750
1751     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1752     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1753         &chars , &style , &atsuLayout );
1754
1755     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
1756
1757     ATSUTextMeasurement textBefore, textAfter;
1758     ATSUTextMeasurement textAscent, textDescent;
1759
1760     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1761         &textBefore , &textAfter, &textAscent , &textDescent );
1762
1763     if ( height )
1764         *height = FixedToInt(textAscent + textDescent);
1765     if ( descent )
1766         *descent = FixedToInt(textDescent);
1767     if ( externalLeading )
1768         *externalLeading = 0;
1769     if ( width )
1770         *width = FixedToInt(textAfter - textBefore);
1771
1772     ::ATSUDisposeTextLayout(atsuLayout);
1773 }
1774
1775 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1776 {
1777     widths.Empty();
1778     widths.Add(0, text.length());
1779
1780     if (text.empty())
1781         return;
1782
1783     ATSUTextLayout atsuLayout;
1784     UniCharCount chars = text.length();
1785     UniChar* ubuf = NULL;
1786
1787 #if SIZEOF_WCHAR_T == 4
1788     wxMBConvUTF16 converter;
1789 #if wxUSE_UNICODE
1790     size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
1791     ubuf = (UniChar*) malloc( unicharlen + 2 );
1792     converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );
1793 #else
1794     const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1795     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1796     ubuf = (UniChar*) malloc( unicharlen + 2 );
1797     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1798 #endif
1799     chars = unicharlen / 2;
1800 #else
1801 #if wxUSE_UNICODE
1802     ubuf = (UniChar*) text.wc_str();
1803 #else
1804     wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1805     chars = wxWcslen( wchar.data() );
1806     ubuf = (UniChar*) wchar.data();
1807 #endif
1808 #endif
1809
1810     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1811     ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1812         &chars , &style , &atsuLayout );
1813
1814     for ( int pos = 0; pos < (int)chars; pos ++ )
1815     {
1816         unsigned long actualNumberOfBounds = 0;
1817         ATSTrapezoid glyphBounds;
1818
1819         // We get a single bound, since the text should only require one. If it requires more, there is an issue
1820         OSStatus result;
1821         result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
1822             kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
1823         if (result != noErr || actualNumberOfBounds != 1 )
1824             return;
1825
1826         widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
1827         //unsigned char uch = s[i];
1828     }
1829
1830     ::ATSUDisposeTextLayout(atsuLayout);
1831 }
1832
1833 void * wxMacCoreGraphicsContext::GetNativeContext()
1834 {
1835     return m_cgContext;
1836 }
1837
1838 // concatenates this transform with the current transform of this context
1839 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1840 {
1841     if ( m_cgContext )
1842         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1843     else
1844         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
1845 }
1846
1847 // sets the transform of this context
1848 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
1849 {
1850     if ( m_cgContext )
1851     {
1852         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1853         transform = CGAffineTransformInvert( transform ) ;
1854         CGContextConcatCTM( m_cgContext, transform);
1855         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1856     }
1857     else
1858     {
1859         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
1860     }
1861 }
1862
1863 // gets the matrix of this context
1864 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
1865 {
1866     wxGraphicsMatrix m = CreateMatrix();
1867     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
1868         CGContextGetCTM( m_cgContext ));
1869     return m;
1870 }
1871
1872 //
1873 // Renderer
1874 //
1875
1876 //-----------------------------------------------------------------------------
1877 // wxMacCoreGraphicsRenderer declaration
1878 //-----------------------------------------------------------------------------
1879
1880 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
1881 {
1882 public :
1883     wxMacCoreGraphicsRenderer() {}
1884
1885     virtual ~wxMacCoreGraphicsRenderer() {}
1886
1887     // Context
1888
1889     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1890
1891     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1892
1893     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1894
1895     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1896
1897     virtual wxGraphicsContext * CreateMeasuringContext();
1898
1899     // Path
1900
1901     virtual wxGraphicsPath CreatePath();
1902
1903     // Matrix
1904
1905     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1906         wxDouble tx=0.0, wxDouble ty=0.0);
1907
1908
1909     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1910
1911     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1912
1913     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1914     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1915         const wxColour&c1, const wxColour&c2) ;
1916
1917     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1918     // with radius r and color cColor
1919     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1920         const wxColour &oColor, const wxColour &cColor) ;
1921
1922    // sets the font
1923     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1924
1925 private :
1926     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
1927 } ;
1928
1929 //-----------------------------------------------------------------------------
1930 // wxMacCoreGraphicsRenderer implementation
1931 //-----------------------------------------------------------------------------
1932
1933 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
1934
1935 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
1936
1937 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1938 {
1939     return &gs_MacCoreGraphicsRenderer;
1940 }
1941
1942 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc)
1943 {
1944    return new wxMacCoreGraphicsContext(this,(CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
1945 }
1946
1947 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
1948 {
1949     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
1950 }
1951
1952
1953 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
1954 {
1955     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
1956 }
1957
1958 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
1959 {
1960     return new wxMacCoreGraphicsContext(this, window );
1961 }
1962
1963 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
1964 {
1965     return new wxMacCoreGraphicsContext(this);
1966 }
1967
1968 // Path
1969
1970 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
1971 {
1972     wxGraphicsPath m;
1973     m.SetRefData( new wxMacCoreGraphicsPathData(this));
1974     return m;
1975 }
1976
1977
1978 // Matrix
1979
1980 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1981     wxDouble tx, wxDouble ty)
1982 {
1983     wxGraphicsMatrix m;
1984     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
1985     data->Set( a,b,c,d,tx,ty ) ;
1986     m.SetRefData(data);
1987     return m;
1988 }
1989
1990 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
1991 {
1992     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
1993         return wxNullGraphicsPen;
1994     else
1995     {
1996         wxGraphicsPen p;
1997         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
1998         return p;
1999     }
2000 }
2001
2002 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2003 {
2004     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2005         return wxNullGraphicsBrush;
2006     else
2007     {
2008         wxGraphicsBrush p;
2009         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2010         return p;
2011     }
2012 }
2013
2014 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2015 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2016     const wxColour&c1, const wxColour&c2)
2017 {
2018     wxGraphicsBrush p;
2019     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2020     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
2021     p.SetRefData(d);
2022     return p;
2023 }
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 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2028     const wxColour &oColor, const wxColour &cColor)
2029 {
2030     wxGraphicsBrush p;
2031     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2032     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2033     p.SetRefData(d);
2034     return p;
2035 }
2036
2037 // sets the font
2038 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2039 {
2040     if ( font.Ok() )
2041     {
2042         wxGraphicsFont p;
2043         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2044         return p;
2045     }
2046     else
2047         return wxNullGraphicsFont;
2048 }
2049
2050
2051
2052 #endif // wxMAC_USE_CORE_GRAPHICS