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