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 #ifndef wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
  41 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
  42     #define wxMAC_USE_CORE_GRAPHICS_BLEND_MODES 1
  43 #else
  44     #define wxMAC_USE_CORE_GRAPHICS_BLEND_MODES 0
  45 #endif
  46 #endif
  47
  48 //-----------------------------------------------------------------------------
  49 // constants
  50 //-----------------------------------------------------------------------------
  51
  52 #if !defined( __DARWIN__ ) || defined(__MWERKS__)
  53 #ifndef M_PI
  54 const double M_PI = 3.14159265358979;
  55 #endif
  56 #endif
  57
  58 static const double RAD2DEG = 180.0 / M_PI;
  59
  60 //
  61 // Pen, Brushes and Fonts
  62 //
  63
  64 #pragma mark -
  65 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
  66
  67 // CGPattern wrapper class: always allocate on heap, never call destructor
  68
  69 class wxMacCoreGraphicsPattern
  70 {
  71 public :
  72     wxMacCoreGraphicsPattern() {}
  73
  74     // is guaranteed to be called only with a non-Null CGContextRef
  75     virtual void Render( CGContextRef ctxRef ) = 0;
  76
  77     operator CGPatternRef() const { return m_patternRef; }
  78
  79 protected :
  80     virtual ~wxMacCoreGraphicsPattern()
  81     {
  82         // as this is called only when the m_patternRef is been released;
  83         // don't release it again
  84     }
  85
  86     static void _Render( void *info, CGContextRef ctxRef )
  87     {
  88         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
  89         if ( self && ctxRef )
  90             self->Render( ctxRef );
  91     }
  92
  93     static void _Dispose( void *info )
  94     {
  95         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
  96         delete self;
  97     }
  98
  99     CGPatternRef m_patternRef;
 100
 101     static const CGPatternCallbacks ms_Callbacks;
 102 };
 103
 104 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
 105
 106 class ImagePattern : public wxMacCoreGraphicsPattern
 107 {
 108 public :
 109     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 110     {
 111         wxASSERT( bmp && bmp->Ok() );
 112
 113         Init( (CGImageRef) bmp->CGImageCreate() , transform );
 114     }
 115
 116     // ImagePattern takes ownership of CGImageRef passed in
 117     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 118     {
 119         if ( image )
 120             CFRetain( image );
 121
 122         Init( image , transform );
 123     }
 124
 125     virtual void Render( CGContextRef ctxRef )
 126     {
 127         if (m_image != NULL)
 128             HIViewDrawCGImage( ctxRef, &m_imageBounds, m_image );
 129     }
 130
 131 protected :
 132     void Init( CGImageRef image, const CGAffineTransform& transform )
 133     {
 134         m_image = image;
 135         if ( m_image )
 136         {
 137             m_imageBounds = CGRectMake( 0.0, 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 138             m_patternRef = CGPatternCreate(
 139                 this , m_imageBounds, transform ,
 140                 m_imageBounds.size.width, m_imageBounds.size.height,
 141                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 142         }
 143     }
 144
 145     virtual ~ImagePattern()
 146     {
 147         if ( m_image )
 148             CGImageRelease( m_image );
 149     }
 150
 151     CGImageRef m_image;
 152     CGRect m_imageBounds;
 153 };
 154
 155 class HatchPattern : public wxMacCoreGraphicsPattern
 156 {
 157 public :
 158     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 159     {
 160         m_hatch = hatchstyle;
 161         m_imageBounds = CGRectMake( 0.0, 0.0, 8.0 , 8.0 );
 162         m_patternRef = CGPatternCreate(
 163             this , m_imageBounds, transform ,
 164             m_imageBounds.size.width, m_imageBounds.size.height,
 165             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 166     }
 167
 168     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 169     {
 170 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
 171         if ( CGContextStrokeLineSegments!=NULL  )
 172         {
 173             CGContextStrokeLineSegments( ctxRef , pts , count );
 174         }
 175         else
 176 #endif
 177         {
 178             CGContextBeginPath( ctxRef );
 179             for (size_t i = 0; i < count; i += 2)
 180             {
 181                 CGContextMoveToPoint(ctxRef, pts[i].x, pts[i].y);
 182                 CGContextAddLineToPoint(ctxRef, pts[i+1].x, pts[i+1].y);
 183             }
 184             CGContextStrokePath(ctxRef);
 185         }
 186     }
 187
 188     virtual void Render( CGContextRef ctxRef )
 189     {
 190         switch ( m_hatch )
 191         {
 192             case wxBDIAGONAL_HATCH :
 193                 {
 194                     CGPoint pts[] =
 195                     {
 196                     { 8.0 , 0.0 } , { 0.0 , 8.0 }
 197                     };
 198                     StrokeLineSegments( ctxRef , pts , 2 );
 199                 }
 200                 break;
 201
 202             case wxCROSSDIAG_HATCH :
 203                 {
 204                     CGPoint pts[] =
 205                     {
 206                         { 0.0 , 0.0 } , { 8.0 , 8.0 } ,
 207                         { 8.0 , 0.0 } , { 0.0 , 8.0 }
 208                     };
 209                     StrokeLineSegments( ctxRef , pts , 4 );
 210                 }
 211                 break;
 212
 213             case wxFDIAGONAL_HATCH :
 214                 {
 215                     CGPoint pts[] =
 216                     {
 217                     { 0.0 , 0.0 } , { 8.0 , 8.0 }
 218                     };
 219                     StrokeLineSegments( ctxRef , pts , 2 );
 220                 }
 221                 break;
 222
 223             case wxCROSS_HATCH :
 224                 {
 225                     CGPoint pts[] =
 226                     {
 227                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 228                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 229                     };
 230                     StrokeLineSegments( ctxRef , pts , 4 );
 231                 }
 232                 break;
 233
 234             case wxHORIZONTAL_HATCH :
 235                 {
 236                     CGPoint pts[] =
 237                     {
 238                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 239                     };
 240                     StrokeLineSegments( ctxRef , pts , 2 );
 241                 }
 242                 break;
 243
 244             case wxVERTICAL_HATCH :
 245                 {
 246                     CGPoint pts[] =
 247                     {
 248                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 249                     };
 250                     StrokeLineSegments( ctxRef , pts , 2 );
 251                 }
 252                 break;
 253
 254             default:
 255                 break;
 256         }
 257     }
 258
 259 protected :
 260     virtual ~HatchPattern() {}
 261
 262     CGRect      m_imageBounds;
 263     int         m_hatch;
 264 };
 265
 266 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 267 {
 268 public:
 269     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 270     ~wxMacCoreGraphicsPenData();
 271
 272     void Init();
 273     virtual void Apply( wxGraphicsContext* context );
 274     virtual wxDouble GetWidth() { return m_width; }
 275
 276 protected :
 277     CGLineCap m_cap;
 278     wxMacCFRefHolder<CGColorRef> m_color;
 279     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 280
 281     CGLineJoin m_join;
 282     CGFloat m_width;
 283
 284     int m_count;
 285     const CGFloat *m_lengths;
 286     CGFloat *m_userLengths;
 287
 288
 289     bool m_isPattern;
 290     wxMacCFRefHolder<CGPatternRef> m_pattern;
 291     CGFloat* m_patternColorComponents;
 292 };
 293
 294 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 295     wxGraphicsObjectRefData( renderer )
 296 {
 297     Init();
 298
 299     float components[4] = { pen.GetColour().Red() / 255.0 , pen.GetColour().Green() / 255.0 ,
 300             pen.GetColour().Blue() / 255.0 , pen.GetColour().Alpha() / 255.0 } ;
 301     m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 302
 303     // TODO: * m_dc->m_scaleX
 304     m_width = pen.GetWidth();
 305     if (m_width <= 0.0)
 306         m_width = 0.1;
 307
 308     switch ( pen.GetCap() )
 309     {
 310         case wxCAP_ROUND :
 311             m_cap = kCGLineCapRound;
 312             break;
 313
 314         case wxCAP_PROJECTING :
 315             m_cap = kCGLineCapSquare;
 316             break;
 317
 318         case wxCAP_BUTT :
 319             m_cap = kCGLineCapButt;
 320             break;
 321
 322         default :
 323             m_cap = kCGLineCapButt;
 324             break;
 325     }
 326
 327     switch ( pen.GetJoin() )
 328     {
 329         case wxJOIN_BEVEL :
 330             m_join = kCGLineJoinBevel;
 331             break;
 332
 333         case wxJOIN_MITER :
 334             m_join = kCGLineJoinMiter;
 335             break;
 336
 337         case wxJOIN_ROUND :
 338             m_join = kCGLineJoinRound;
 339             break;
 340
 341         default :
 342             m_join = kCGLineJoinMiter;
 343             break;
 344     }
 345
 346     const CGFloat dashUnit = m_width < 1.0 ? 1.0 : m_width;
 347
 348     const CGFloat dotted[] = { dashUnit , dashUnit + 2.0 };
 349     static const CGFloat short_dashed[] = { 9.0 , 6.0 };
 350     static const CGFloat dashed[] = { 19.0 , 9.0 };
 351     static const CGFloat dotted_dashed[] = { 9.0 , 6.0 , 3.0 , 3.0 };
 352
 353     switch ( pen.GetStyle() )
 354     {
 355         case wxSOLID :
 356             break;
 357
 358         case wxDOT :
 359             m_count = WXSIZEOF(dotted);
 360             m_userLengths = new CGFloat[ m_count ] ;
 361             memcpy( m_userLengths, dotted, sizeof(dotted) );
 362             m_lengths = m_userLengths;
 363             break;
 364
 365         case wxLONG_DASH :
 366             m_count = WXSIZEOF(dashed);
 367             m_lengths = dashed;
 368             break;
 369
 370         case wxSHORT_DASH :
 371             m_count = WXSIZEOF(short_dashed);
 372             m_lengths = short_dashed;
 373             break;
 374
 375         case wxDOT_DASH :
 376             m_count = WXSIZEOF(dotted_dashed);
 377             m_lengths = dotted_dashed;
 378             break;
 379
 380         case wxUSER_DASH :
 381             wxDash *dashes;
 382             m_count = pen.GetDashes( &dashes );
 383             if ((dashes != NULL) && (m_count > 0))
 384             {
 385                 m_userLengths = new CGFloat[m_count];
 386                 for ( int i = 0; i < m_count; ++i )
 387                 {
 388                     m_userLengths[i] = dashes[i] * dashUnit;
 389
 390                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 391                         m_userLengths[i] = dashUnit + 2.0;
 392                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 393                         m_userLengths[i] = dashUnit;
 394                 }
 395             }
 396             m_lengths = m_userLengths;
 397             break;
 398
 399         case wxSTIPPLE :
 400             {
 401                 wxBitmap* bmp = pen.GetStipple();
 402                 if ( bmp && bmp->Ok() )
 403                 {
 404                     m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 405                     m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 406                     m_patternColorComponents = new CGFloat[1] ;
 407                     m_patternColorComponents[0] = 1.0;
 408                     m_isPattern = true;
 409                 }
 410             }
 411             break;
 412
 413         default :
 414             {
 415                 m_isPattern = true;
 416                 m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 417                 m_pattern.Set( *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 418                 m_patternColorComponents = new CGFloat[4] ;
 419                 m_patternColorComponents[0] = pen.GetColour().Red() / 255.0;
 420                 m_patternColorComponents[1] = pen.GetColour().Green() / 255.0;
 421                 m_patternColorComponents[2] = pen.GetColour().Blue() / 255.0;
 422                 m_patternColorComponents[3] =  pen.GetColour().Alpha() / 255.0;
 423             }
 424             break;
 425     }
 426     if ((m_lengths != NULL) && (m_count > 0))
 427     {
 428         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 429         m_cap = kCGLineCapButt;
 430     }
 431 }
 432
 433 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 434 {
 435     delete[] m_userLengths;
 436     delete[] m_patternColorComponents;
 437 }
 438
 439 void wxMacCoreGraphicsPenData::Init()
 440 {
 441     m_lengths = NULL;
 442     m_userLengths = NULL;
 443     m_width = 0;
 444     m_count = 0;
 445     m_patternColorComponents = NULL;
 446     m_isPattern = false;
 447 }
 448
 449 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 450 {
 451     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 452     CGContextSetLineWidth( cg , m_width );
 453     CGContextSetLineJoin( cg , m_join );
 454
 455     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 456     CGContextSetLineCap( cg , m_cap );
 457
 458     if ( m_isPattern )
 459     {
 460         CGAffineTransform matrix = CGContextGetCTM( cg );
 461         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 462         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 463         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 464     }
 465     else
 466     {
 467         if ( context->GetLogicalFunction() == wxINVERT || context->GetLogicalFunction() == wxXOR )
 468         {
 469             CGContextSetRGBStrokeColor( cg , 1.0, 1.0 , 1.0, 1.0 );
 470         }
 471         else
 472             CGContextSetStrokeColorWithColor( cg , m_color );
 473     }
 474 }
 475
 476 //
 477 // Brush
 478 //
 479
 480 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 481 {
 482 public:
 483     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 484     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 485     ~wxMacCoreGraphicsBrushData ();
 486
 487     virtual void Apply( wxGraphicsContext* context );
 488     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 489         const wxColour&c1, const wxColour&c2 );
 490     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 491     const wxColour &oColor, const wxColour &cColor );
 492
 493     virtual bool IsShading() { return m_isShading; }
 494     CGShadingRef GetShading() { return m_shading; }
 495 protected:
 496     CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
 497     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 498     virtual void Init();
 499
 500     wxMacCFRefHolder<CGColorRef> m_color;
 501     wxMacCFRefHolder<CGColorSpaceRef> m_colorSpace;
 502
 503     bool m_isPattern;
 504     wxMacCFRefHolder<CGPatternRef> m_pattern;
 505     CGFloat* m_patternColorComponents;
 506
 507     bool m_isShading;
 508     CGFunctionRef m_gradientFunction;
 509     CGShadingRef m_shading;
 510     CGFloat *m_gradientComponents;
 511 };
 512
 513 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 514 {
 515     Init();
 516 }
 517
 518 void wxMacCoreGraphicsBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 519         const wxColour&c1, const wxColour&c2 )
 520 {
 521     m_gradientFunction = CreateGradientFunction( c1, c2 );
 522     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake(x1,y1), CGPointMake(x2,y2), m_gradientFunction, true, true ) ;
 523     m_isShading = true ;
 524 }
 525
 526 void wxMacCoreGraphicsBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 527     const wxColour &oColor, const wxColour &cColor )
 528 {
 529     m_gradientFunction = CreateGradientFunction( oColor, cColor );
 530     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake(xo,yo), 0, CGPointMake(xc,yc), radius, m_gradientFunction, true, true ) ;
 531     m_isShading = true ;
 532 }
 533
 534 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer )
 535 {
 536     Init();
 537
 538     if ( brush.GetStyle() == wxSOLID )
 539     {
 540         if ( brush.MacGetBrushKind() == kwxMacBrushTheme )
 541         {
 542 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
 543             if ( HIThemeBrushCreateCGColor != 0 )
 544             {
 545                 CGColorRef color ;
 546                 HIThemeBrushCreateCGColor( brush.MacGetTheme(), &color );
 547                 m_color.Set( color ) ;
 548             }
 549             else
 550 #endif
 551             {
 552                 // as close as we can get, unfortunately < 10.4 things get difficult
 553                 RGBColor color;
 554                 GetThemeBrushAsColor( brush.MacGetTheme(), 32, true, &color );
 555                 float components[4] = {  (CGFloat) color.red / 65536,
 556                     (CGFloat) color.green / 65536, (CGFloat) color.blue / 65536, 1 } ;
 557                 m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 558             }
 559         }
 560         else
 561         {
 562             float components[4] = { brush.GetColour().Red() / 255.0 , brush.GetColour().Green() / 255.0 ,
 563                 brush.GetColour().Blue() / 255.0 , brush.GetColour().Alpha() / 255.0 } ;
 564             m_color.Set( CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ) ;
 565         }
 566     }
 567     else if ( brush.IsHatch() )
 568     {
 569         m_isPattern = true;
 570         m_colorSpace.Set( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 571         m_pattern.Set( *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 572
 573         m_patternColorComponents = new CGFloat[4] ;
 574         m_patternColorComponents[0] = brush.GetColour().Red() / 255.0;
 575         m_patternColorComponents[1] = brush.GetColour().Green() / 255.0;
 576         m_patternColorComponents[2] = brush.GetColour().Blue() / 255.0;
 577         m_patternColorComponents[3] = brush.GetColour().Alpha() / 255.0;
 578     }
 579     else
 580     {
 581         // now brush is a bitmap
 582         wxBitmap* bmp = brush.GetStipple();
 583         if ( bmp && bmp->Ok() )
 584         {
 585             m_isPattern = true;
 586             m_patternColorComponents = new CGFloat[1] ;
 587             m_patternColorComponents[0] = 1.0;
 588             m_colorSpace.Set( CGColorSpaceCreatePattern( NULL ) );
 589             m_pattern.Set( *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 590         }
 591     }
 592 }
 593
 594 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 595 {
 596     if ( m_shading )
 597         CGShadingRelease(m_shading);
 598
 599     if( m_gradientFunction )
 600         CGFunctionRelease(m_gradientFunction);
 601
 602     delete[] m_gradientComponents;
 603     delete[] m_patternColorComponents;
 604 }
 605
 606 void wxMacCoreGraphicsBrushData::Init()
 607 {
 608     m_patternColorComponents = NULL;
 609     m_gradientFunction = NULL;
 610     m_shading = NULL;
 611     m_isPattern = false;
 612     m_gradientComponents = NULL;
 613     m_isShading = false;
 614 }
 615
 616 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 617 {
 618     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 619
 620     if ( m_isShading )
 621     {
 622         // nothing to set as shades are processed by clipping using the path and filling
 623     }
 624     else
 625     {
 626         if ( m_isPattern )
 627         {
 628             CGAffineTransform matrix = CGContextGetCTM( cg );
 629             CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 630             CGContextSetFillColorSpace( cg , m_colorSpace );
 631             CGContextSetFillPattern( cg, m_pattern , m_patternColorComponents );
 632         }
 633         else
 634         {
 635             CGContextSetFillColorWithColor( cg, m_color );
 636         }
 637     }
 638 }
 639
 640 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 641 {
 642     CGFloat* colors = (CGFloat*) info ;
 643     CGFloat f = *in;
 644     for( int i = 0 ; i < 4 ; ++i )
 645     {
 646         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 647     }
 648 }
 649
 650 CGFunctionRef wxMacCoreGraphicsBrushData::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
 651 {
 652     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 653     static const CGFloat input_value_range [2] = { 0, 1 };
 654     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 655     m_gradientComponents = new CGFloat[8] ;
 656     m_gradientComponents[0] = c1.Red() / 255.0;
 657     m_gradientComponents[1] = c1.Green() / 255.0;
 658     m_gradientComponents[2] = c1.Blue() / 255.0;
 659     m_gradientComponents[3] = c1.Alpha() / 255.0;
 660     m_gradientComponents[4] = c2.Red() / 255.0;
 661     m_gradientComponents[5] = c2.Green() / 255.0;
 662     m_gradientComponents[6] = c2.Blue() / 255.0;
 663     m_gradientComponents[7] = c2.Alpha() / 255.0;
 664
 665     return CGFunctionCreate ( m_gradientComponents,  1,
 666                             input_value_range,
 667                             4,
 668                             output_value_ranges,
 669                             &callbacks);
 670 }
 671
 672 //
 673 // Font
 674 //
 675
 676 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 677 {
 678 public:
 679     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 680     ~wxMacCoreGraphicsFontData();
 681
 682     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 683 private :
 684     ATSUStyle m_macATSUIStyle;
 685 };
 686
 687 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 688 {
 689     m_macATSUIStyle = NULL;
 690
 691     OSStatus status;
 692
 693     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 694
 695     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 696
 697     // we need the scale here ...
 698
 699     Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
 700     RGBColor atsuColor = MAC_WXCOLORREF( col.GetPixel() );
 701     ATSUAttributeTag atsuTags[] =
 702     {
 703             kATSUSizeTag ,
 704             kATSUColorTag ,
 705     };
 706     ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 707     {
 708             sizeof( Fixed ) ,
 709             sizeof( RGBColor ) ,
 710     };
 711     ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 712     {
 713             &atsuSize ,
 714             &atsuColor ,
 715     };
 716
 717     status = ::ATSUSetAttributes(
 718         m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
 719         atsuTags, atsuSizes, atsuValues);
 720
 721     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 722 }
 723
 724 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 725 {
 726     if ( m_macATSUIStyle )
 727     {
 728         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 729         m_macATSUIStyle = NULL;
 730     }
 731 }
 732
 733 //
 734 // Graphics Matrix
 735 //
 736
 737 //-----------------------------------------------------------------------------
 738 // wxMacCoreGraphicsMatrix declaration
 739 //-----------------------------------------------------------------------------
 740
 741 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
 742 {
 743 public :
 744     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
 745
 746     virtual ~wxMacCoreGraphicsMatrixData() ;
 747
 748     virtual wxGraphicsObjectRefData *Clone() const ;
 749
 750     // concatenates the matrix
 751     virtual void Concat( const wxGraphicsMatrixData *t );
 752
 753     // sets the matrix to the respective values
 754     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 755         wxDouble tx=0.0, wxDouble ty=0.0);
 756
 757     // makes this the inverse matrix
 758     virtual void Invert();
 759
 760     // returns true if the elements of the transformation matrix are equal ?
 761     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 762
 763     // return true if this is the identity matrix
 764     virtual bool IsIdentity() const;
 765
 766     //
 767     // transformation
 768     //
 769
 770     // add the translation to this matrix
 771     virtual void Translate( wxDouble dx , wxDouble dy );
 772
 773     // add the scale to this matrix
 774     virtual void Scale( wxDouble xScale , wxDouble yScale );
 775
 776     // add the rotation to this matrix (radians)
 777     virtual void Rotate( wxDouble angle );
 778
 779     //
 780     // apply the transforms
 781     //
 782
 783     // applies that matrix to the point
 784     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 785
 786     // applies the matrix except for translations
 787     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 788
 789     // returns the native representation
 790     virtual void * GetNativeMatrix() const;
 791
 792 private :
 793     CGAffineTransform m_matrix;
 794 } ;
 795
 796 //-----------------------------------------------------------------------------
 797 // wxMacCoreGraphicsMatrix implementation
 798 //-----------------------------------------------------------------------------
 799
 800 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
 801 {
 802 }
 803
 804 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
 805 {
 806 }
 807
 808 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 809 {
 810     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
 811     m->m_matrix = m_matrix ;
 812     return m;
 813 }
 814
 815 // concatenates the matrix
 816 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 817 {
 818     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 819 }
 820
 821 // sets the matrix to the respective values
 822 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 823     wxDouble tx, wxDouble ty)
 824 {
 825     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 826 }
 827
 828 // makes this the inverse matrix
 829 void wxMacCoreGraphicsMatrixData::Invert()
 830 {
 831     m_matrix = CGAffineTransformInvert( m_matrix );
 832 }
 833
 834 // returns true if the elements of the transformation matrix are equal ?
 835 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 836 {
 837     const CGAffineTransform* tm = (CGAffineTransform*) t->GetNativeMatrix();
 838 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
 839     if ( CGAffineTransformEqualToTransform!=NULL )
 840     {
 841         return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 842     }
 843     else
 844 #endif
 845     {
 846         return (
 847             m_matrix.a == tm->a &&
 848             m_matrix.b == tm->b &&
 849             m_matrix.c == tm->c &&
 850             m_matrix.d == tm->d &&
 851             m_matrix.tx == tm->tx &&
 852             m_matrix.ty == tm->ty ) ;
 853     }
 854 }
 855
 856 // return true if this is the identity matrix
 857 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
 858 {
 859     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
 860         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
 861 }
 862
 863 //
 864 // transformation
 865 //
 866
 867 // add the translation to this matrix
 868 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
 869 {
 870     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
 871 }
 872
 873 // add the scale to this matrix
 874 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 875 {
 876     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
 877 }
 878
 879 // add the rotation to this matrix (radians)
 880 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
 881 {
 882     m_matrix = CGAffineTransformRotate( m_matrix, angle);
 883 }
 884
 885 //
 886 // apply the transforms
 887 //
 888
 889 // applies that matrix to the point
 890 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
 891 {
 892     CGPoint pt = CGPointApplyAffineTransform( CGPointMake(*x,*y), m_matrix);
 893
 894     *x = pt.x;
 895     *y = pt.y;
 896 }
 897
 898 // applies the matrix except for translations
 899 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
 900 {
 901     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake(*dx,*dy) , m_matrix );
 902     *dx = sz.width;
 903     *dy = sz.height;
 904 }
 905
 906 // returns the native representation
 907 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
 908 {
 909     return (void*) &m_matrix;
 910 }
 911
 912 //
 913 // Graphics Path
 914 //
 915
 916 //-----------------------------------------------------------------------------
 917 // wxMacCoreGraphicsPath declaration
 918 //-----------------------------------------------------------------------------
 919
 920 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
 921 {
 922 public :
 923     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
 924
 925     ~wxMacCoreGraphicsPathData();
 926
 927     virtual wxGraphicsObjectRefData *Clone() const;
 928
 929     // begins a new subpath at (x,y)
 930     virtual void MoveToPoint( wxDouble x, wxDouble y );
 931
 932     // adds a straight line from the current point to (x,y)
 933     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 934
 935     // adds a cubic Bezier curve from the current point, using two control points and an end point
 936     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 937
 938     // closes the current sub-path
 939     virtual void CloseSubpath();
 940
 941     // gets the last point of the current path, (0,0) if not yet set
 942     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 943
 944     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 945     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
 946
 947     //
 948     // These are convenience functions which - if not available natively will be assembled
 949     // using the primitives from above
 950     //
 951
 952     // adds a quadratic Bezier curve from the current point, using a control point and an end point
 953     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
 954
 955     // appends a rectangle as a new closed subpath
 956     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 957
 958     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 959     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 960
 961     // 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)
 962     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 963
 964     // adds another path
 965     virtual void AddPath( const wxGraphicsPathData* path );
 966
 967     // returns the native path
 968     virtual void * GetNativePath() const { return m_path; }
 969
 970     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 971     virtual void UnGetNativePath(void *p) const {}
 972
 973     // transforms each point of this path by the matrix
 974     virtual void Transform( const wxGraphicsMatrixData* matrix );
 975
 976     // gets the bounding box enclosing all points (possibly including control points)
 977     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
 978
 979     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
 980 private :
 981     CGMutablePathRef m_path;
 982 };
 983
 984 //-----------------------------------------------------------------------------
 985 // wxMacCoreGraphicsPath implementation
 986 //-----------------------------------------------------------------------------
 987
 988 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
 989 {
 990     if ( path )
 991         m_path = path;
 992     else
 993         m_path = CGPathCreateMutable();
 994 }
 995
 996 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
 997 {
 998     CGPathRelease( m_path );
 999 }
1000
1001 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1002 {
1003     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1004     return clone ;
1005 }
1006
1007
1008 // opens (starts) a new subpath
1009 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1010 {
1011     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
1012 }
1013
1014 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1015 {
1016     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
1017 }
1018
1019 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1020 {
1021     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
1022 }
1023
1024 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1025 {
1026     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
1027 }
1028
1029 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1030 {
1031     CGRect cgRect = { { x , y } , { w , h } };
1032     CGPathAddRect( m_path , NULL , cgRect );
1033 }
1034
1035 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1036 {
1037     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1038 }
1039
1040 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1041 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1042 {
1043     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1044     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1045 }
1046
1047 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1048 {
1049     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1050 }
1051
1052 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1053 {
1054     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1055 }
1056
1057 // closes the current subpath
1058 void wxMacCoreGraphicsPathData::CloseSubpath()
1059 {
1060     CGPathCloseSubpath( m_path );
1061 }
1062
1063 // gets the last point of the current path, (0,0) if not yet set
1064 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1065 {
1066     CGPoint p = CGPathGetCurrentPoint( m_path );
1067     *x = p.x;
1068     *y = p.y;
1069 }
1070
1071 // transforms each point of this path by the matrix
1072 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1073 {
1074     CGMutablePathRef p = CGPathCreateMutable() ;
1075     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1076     CGPathRelease( m_path );
1077     m_path = p;
1078 }
1079
1080 // gets the bounding box enclosing all points (possibly including control points)
1081 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1082 {
1083     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1084     *x = bounds.origin.x;
1085     *y = bounds.origin.y;
1086     *w = bounds.size.width;
1087     *h = bounds.size.height;
1088 }
1089
1090 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, int fillStyle) const
1091 {
1092 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
1093     if ( CGPathContainsPoint!=NULL )
1094     {
1095         return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1096     }
1097     else
1098 #endif
1099     {
1100         // TODO : implementation for 10.3
1101         CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1102         return CGRectContainsPoint( bounds, CGPointMake(x,y) ) == 1;
1103     }
1104 }
1105
1106 //
1107 // Graphics Context
1108 //
1109
1110 //-----------------------------------------------------------------------------
1111 // wxMacCoreGraphicsContext declaration
1112 //-----------------------------------------------------------------------------
1113
1114 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1115 {
1116 public:
1117     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext );
1118
1119     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1120
1121     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1122
1123     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1124
1125     wxMacCoreGraphicsContext();
1126
1127     ~wxMacCoreGraphicsContext();
1128
1129     void Init();
1130
1131     // push the current state of the context, ie the transformation matrix on a stack
1132     virtual void PushState();
1133
1134     // pops a stored state from the stack
1135     virtual void PopState();
1136
1137     // clips drawings to the region
1138     virtual void Clip( const wxRegion &region );
1139
1140     // clips drawings to the rect
1141     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1142
1143     // resets the clipping to original extent
1144     virtual void ResetClip();
1145
1146     virtual void * GetNativeContext();
1147
1148     bool SetLogicalFunction( int function );
1149     //
1150     // transformation
1151     //
1152
1153     // translate
1154     virtual void Translate( wxDouble dx , wxDouble dy );
1155
1156     // scale
1157     virtual void Scale( wxDouble xScale , wxDouble yScale );
1158
1159     // rotate (radians)
1160     virtual void Rotate( wxDouble angle );
1161
1162     // concatenates this transform with the current transform of this context
1163     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1164
1165     // sets the transform of this context
1166     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1167
1168     // gets the matrix of this context
1169     virtual wxGraphicsMatrix GetTransform() const;
1170     //
1171     // setting the paint
1172     //
1173
1174     // strokes along a path with the current pen
1175     virtual void StrokePath( const wxGraphicsPath &path );
1176
1177     // fills a path with the current brush
1178     virtual void FillPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1179
1180     // draws a path by first filling and then stroking
1181     virtual void DrawPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1182
1183     virtual bool ShouldOffset() const
1184     {
1185         int penwidth = 0 ;
1186         if ( !m_pen.IsNull() )
1187         {
1188             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1189             if ( penwidth == 0 )
1190                 penwidth = 1;
1191         }
1192         return ( penwidth % 2 ) == 1;
1193     }
1194     //
1195     // text
1196     //
1197
1198     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1199
1200     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1201
1202     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1203         wxDouble *descent, wxDouble *externalLeading ) const;
1204
1205     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1206
1207     //
1208     // image support
1209     //
1210
1211     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1212
1213     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1214
1215     void SetNativeContext( CGContextRef cg );
1216
1217     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1218     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1219
1220 private:
1221     void EnsureIsValid();
1222
1223     CGContextRef m_cgContext;
1224     WindowRef m_windowRef;
1225     bool m_releaseContext;
1226     CGAffineTransform m_windowTransform;
1227
1228     wxMacCFRefHolder<HIShapeRef> m_clipRgn;
1229 };
1230
1231 //-----------------------------------------------------------------------------
1232 // device context implementation
1233 //
1234 // more and more of the dc functionality should be implemented by calling
1235 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1236 // also coordinate conversions should be moved to native matrix ops
1237 //-----------------------------------------------------------------------------
1238
1239 // we always stock two context states, one at entry, to be able to preserve the
1240 // state we were called with, the other one after changing to HI Graphics orientation
1241 // (this one is used for getting back clippings etc)
1242
1243 //-----------------------------------------------------------------------------
1244 // wxMacCoreGraphicsContext implementation
1245 //-----------------------------------------------------------------------------
1246
1247 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1248
1249 void wxMacCoreGraphicsContext::Init()
1250 {
1251     m_cgContext = NULL;
1252     m_releaseContext = false;
1253     m_windowRef = NULL;
1254
1255     HIRect r = CGRectMake(0,0,0,0);
1256     m_clipRgn.Set(HIShapeCreateWithRect(&r));
1257 }
1258
1259 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext ) : wxGraphicsContext(renderer)
1260 {
1261     Init();
1262     SetNativeContext(cgcontext);
1263 }
1264
1265 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1266 {
1267     Init();
1268     m_windowRef = window;
1269 }
1270
1271 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1272 {
1273     Init();
1274     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1275     int originX , originY;
1276     originX = originY = 0;
1277     window->MacWindowToRootWindow( &originX , &originY );
1278     Rect bounds;
1279     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1280
1281     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1282     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1283     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1284 }
1285
1286 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1287 {
1288     Init();
1289 }
1290
1291 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1292 {
1293     Init();
1294     wxLogDebug(wxT("Illegal Constructor called"));
1295 }
1296
1297 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1298 {
1299     SetNativeContext(NULL);
1300 }
1301
1302 void wxMacCoreGraphicsContext::EnsureIsValid()
1303 {
1304     if ( !m_cgContext )
1305     {
1306         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1307         wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
1308
1309         CGContextConcatCTM( m_cgContext, m_windowTransform );
1310                 CGContextSaveGState( m_cgContext );
1311                 m_releaseContext = true;
1312                 if ( !HIShapeIsEmpty(m_clipRgn) )
1313                 {
1314             // the clip region is in device coordinates, so we convert this again to user coordinates
1315             wxMacCFRefHolder<HIMutableShapeRef> hishape ;
1316             hishape.Set( HIShapeCreateMutableCopy( m_clipRgn ) );
1317             CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1318             HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1319                         HIShapeReplacePathInCGContext( hishape, m_cgContext );
1320                         CGContextClip( m_cgContext );
1321                 }
1322                 CGContextSaveGState( m_cgContext );
1323         }
1324 }
1325
1326 bool wxMacCoreGraphicsContext::SetLogicalFunction( int function )
1327 {
1328     if (m_logicalFunction == function)
1329         return true;
1330
1331     EnsureIsValid();
1332
1333     bool retval = false;
1334
1335     if ( function == wxCOPY )
1336     {
1337         retval = true;
1338 #if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
1339         if ( CGContextSetBlendMode != NULL )
1340         {
1341             CGContextSetBlendMode( m_cgContext, kCGBlendModeNormal );
1342             CGContextSetShouldAntialias( m_cgContext, true );
1343         }
1344 #endif
1345     }
1346     else if ( function == wxINVERT || function == wxXOR )
1347     {
1348 #if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
1349         if ( CGContextSetBlendMode != NULL )
1350         {
1351             // change color to white
1352             CGContextSetBlendMode( m_cgContext, kCGBlendModeExclusion );
1353             CGContextSetShouldAntialias( m_cgContext, false );
1354             retval = true;
1355         }
1356 #endif
1357     }
1358
1359     if (retval)
1360         m_logicalFunction = function;
1361     return retval ;
1362 }
1363
1364 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1365 {
1366     if( m_cgContext )
1367     {
1368         HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
1369         HIShapeReplacePathInCGContext( shape, m_cgContext );
1370         CGContextClip( m_cgContext );
1371         CFRelease( shape );
1372     }
1373     else
1374     {
1375         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1376         // to regions we try at least to have correct translations
1377         wxMacCFRefHolder<HIShapeRef> hishape ;
1378         hishape.Set( HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() ));
1379         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( hishape );
1380
1381         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1382         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1383         m_clipRgn.Set(mutableShape);
1384     }
1385 }
1386
1387 // clips drawings to the rect
1388 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1389 {
1390     HIRect r = CGRectMake( x , y , w , h );
1391     if ( m_cgContext )
1392     {
1393         CGContextClipToRect( m_cgContext, r );
1394     }
1395     else
1396     {
1397         // the clipping itself must be stored as device coordinates, otherwise
1398         // we cannot apply it back correctly
1399         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1400         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1401     }
1402 }
1403
1404     // resets the clipping to original extent
1405 void wxMacCoreGraphicsContext::ResetClip()
1406 {
1407     if ( m_cgContext )
1408     {
1409         // there is no way for clearing the clip, we can only revert to the stored
1410         // state, but then we have to make sure everything else is NOT restored
1411         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1412         CGContextRestoreGState( m_cgContext );
1413         CGContextSaveGState( m_cgContext );
1414         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1415         transformNew = CGAffineTransformInvert( transformNew ) ;
1416         CGContextConcatCTM( m_cgContext, transformNew);
1417         CGContextConcatCTM( m_cgContext, transform);
1418     }
1419     else
1420     {
1421         HIRect r = CGRectMake(0,0,0,0);
1422         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1423     }
1424 }
1425
1426 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1427 {
1428     if ( m_pen.IsNull() )
1429         return ;
1430
1431     EnsureIsValid();
1432
1433     bool offset = ShouldOffset();
1434     if ( offset )
1435         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1436
1437     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1438     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1439     CGContextStrokePath( m_cgContext );
1440
1441     if ( offset )
1442         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1443 }
1444
1445 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , int fillStyle )
1446 {
1447     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1448     {
1449         // when using shading, we cannot draw pen and brush at the same time
1450         // revert to the base implementation of first filling and then stroking
1451         wxGraphicsContext::DrawPath( path, fillStyle );
1452         return;
1453     }
1454
1455     CGPathDrawingMode mode = kCGPathFill ;
1456     if ( m_brush.IsNull() )
1457     {
1458         if ( m_pen.IsNull() )
1459             return;
1460         else
1461             mode = kCGPathStroke;
1462     }
1463     else
1464     {
1465         if ( m_pen.IsNull() )
1466         {
1467             if ( fillStyle == wxODDEVEN_RULE )
1468                 mode = kCGPathEOFill;
1469             else
1470                 mode = kCGPathFill;
1471         }
1472         else
1473         {
1474             if ( fillStyle == wxODDEVEN_RULE )
1475                 mode = kCGPathEOFillStroke;
1476             else
1477                 mode = kCGPathFillStroke;
1478         }
1479     }
1480
1481     EnsureIsValid();
1482
1483     if ( !m_brush.IsNull() )
1484         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1485     if ( !m_pen.IsNull() )
1486         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1487
1488     bool offset = ShouldOffset();
1489
1490     if ( offset )
1491         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1492
1493     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1494     CGContextDrawPath( m_cgContext , mode );
1495
1496     if ( offset )
1497         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1498 }
1499
1500 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , int fillStyle )
1501 {
1502     if ( m_brush.IsNull() )
1503         return;
1504
1505     EnsureIsValid();
1506
1507     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1508     {
1509         CGContextSaveGState( m_cgContext );
1510         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1511         CGContextClip( m_cgContext );
1512         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1513         CGContextRestoreGState( m_cgContext);
1514     }
1515     else
1516     {
1517         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1518         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1519         if ( fillStyle == wxODDEVEN_RULE )
1520             CGContextEOFillPath( m_cgContext );
1521         else
1522             CGContextFillPath( m_cgContext );
1523     }
1524 }
1525
1526 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1527 {
1528     // we allow either setting or clearing but not replacing
1529     wxASSERT( m_cgContext == NULL || cg == NULL );
1530
1531     if ( m_cgContext )
1532     {
1533         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1534         CGContextRestoreGState( m_cgContext );
1535         CGContextRestoreGState( m_cgContext );
1536         if ( m_releaseContext )
1537             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1538         else
1539             CGContextRelease(m_cgContext);
1540     }
1541
1542
1543     m_cgContext = cg;
1544
1545     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1546     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1547     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1548     // for this one operation.
1549
1550     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1551     // can be removed.
1552     if (m_cgContext)
1553     {
1554         CGContextRetain(m_cgContext);
1555         CGContextSaveGState( m_cgContext );
1556         CGContextSaveGState( m_cgContext );
1557         m_releaseContext = false;
1558     }
1559 }
1560
1561 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1562 {
1563     if ( m_cgContext )
1564         CGContextTranslateCTM( m_cgContext, dx, dy );
1565     else
1566         m_windowTransform = CGAffineTransformTranslate(m_windowTransform,dx,dy);
1567 }
1568
1569 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1570 {
1571     if ( m_cgContext )
1572         CGContextScaleCTM( m_cgContext , xScale , yScale );
1573     else
1574         m_windowTransform = CGAffineTransformScale(m_windowTransform,xScale,yScale);
1575 }
1576
1577 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1578 {
1579     if ( m_cgContext )
1580         CGContextRotateCTM( m_cgContext , angle );
1581     else
1582         m_windowTransform = CGAffineTransformRotate(m_windowTransform,angle);
1583 }
1584
1585 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1586 {
1587     EnsureIsValid();
1588
1589     CGImageRef image = (CGImageRef)( bmp.CGImageCreate() );
1590     HIRect r = CGRectMake( x , y , w , h );
1591     if ( bmp.GetDepth() == 1 )
1592     {
1593         // is is a mask, the '1' in the mask tell where to draw the current brush
1594         if (  !m_brush.IsNull() )
1595         {
1596             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1597             {
1598                 // TODO clip to mask
1599             /*
1600                 CGContextSaveGState( m_cgContext );
1601                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1602                 CGContextClip( m_cgContext );
1603                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1604                 CGContextRestoreGState( m_cgContext);
1605             */
1606             }
1607             else
1608             {
1609                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1610                 HIViewDrawCGImage( m_cgContext , &r , image );
1611             }
1612         }
1613     }
1614     else
1615     {
1616         HIViewDrawCGImage( m_cgContext , &r , image );
1617     }
1618     CGImageRelease( image );
1619 }
1620
1621 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1622 {
1623     EnsureIsValid();
1624
1625     CGRect r = CGRectMake( 00 , 00 , w , h );
1626     CGContextSaveGState( m_cgContext );
1627     CGContextTranslateCTM( m_cgContext, x , y + h );
1628     CGContextScaleCTM( m_cgContext, 1, -1 );
1629     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1630         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1631     CGContextRestoreGState( m_cgContext );
1632 }
1633
1634 void wxMacCoreGraphicsContext::PushState()
1635 {
1636     EnsureIsValid();
1637
1638     CGContextSaveGState( m_cgContext );
1639 }
1640
1641 void wxMacCoreGraphicsContext::PopState()
1642 {
1643     EnsureIsValid();
1644
1645     CGContextRestoreGState( m_cgContext );
1646 }
1647
1648 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1649 {
1650     DrawText(str, x, y, 0.0);
1651 }
1652
1653 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1654 {
1655     if ( m_font.IsNull() )
1656         return;
1657
1658     EnsureIsValid();
1659
1660     OSStatus status = noErr;
1661     ATSUTextLayout atsuLayout;
1662     UniCharCount chars = str.length();
1663     UniChar* ubuf = NULL;
1664
1665 #if SIZEOF_WCHAR_T == 4
1666     wxMBConvUTF16 converter;
1667 #if wxUSE_UNICODE
1668     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1669     ubuf = (UniChar*) malloc( unicharlen + 2 );
1670     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1671 #else
1672     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1673     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1674     ubuf = (UniChar*) malloc( unicharlen + 2 );
1675     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1676 #endif
1677     chars = unicharlen / 2;
1678 #else
1679 #if wxUSE_UNICODE
1680     ubuf = (UniChar*) str.wc_str();
1681 #else
1682     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1683     chars = wxWcslen( wchar.data() );
1684     ubuf = (UniChar*) wchar.data();
1685 #endif
1686 #endif
1687
1688     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1689     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1690         &chars , &style , &atsuLayout );
1691
1692     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
1693
1694     status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1695     wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1696
1697     int iAngle = int( angle * RAD2DEG );
1698     if ( abs(iAngle) > 0 )
1699     {
1700         Fixed atsuAngle = IntToFixed( iAngle );
1701         ATSUAttributeTag atsuTags[] =
1702         {
1703             kATSULineRotationTag ,
1704         };
1705         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1706         {
1707             sizeof( Fixed ) ,
1708         };
1709         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1710         {
1711             &atsuAngle ,
1712         };
1713         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1714             atsuTags, atsuSizes, atsuValues );
1715     }
1716
1717     {
1718         ATSUAttributeTag atsuTags[] =
1719         {
1720             kATSUCGContextTag ,
1721         };
1722         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1723         {
1724             sizeof( CGContextRef ) ,
1725         };
1726         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1727         {
1728             &m_cgContext ,
1729         };
1730         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1731             atsuTags, atsuSizes, atsuValues );
1732     }
1733
1734     ATSUTextMeasurement textBefore, textAfter;
1735     ATSUTextMeasurement ascent, descent;
1736
1737     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1738         &textBefore , &textAfter, &ascent , &descent );
1739
1740     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1741
1742     Rect rect;
1743     x += (int)(sin(angle) * FixedToInt(ascent));
1744     y += (int)(cos(angle) * FixedToInt(ascent));
1745
1746     status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1747         IntToFixed(x) , IntToFixed(y) , &rect );
1748     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1749
1750     CGContextSaveGState(m_cgContext);
1751     CGContextTranslateCTM(m_cgContext, x, y);
1752     CGContextScaleCTM(m_cgContext, 1, -1);
1753     status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1754         IntToFixed(0) , IntToFixed(0) );
1755
1756     wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
1757
1758     CGContextRestoreGState(m_cgContext);
1759
1760     ::ATSUDisposeTextLayout(atsuLayout);
1761
1762 #if SIZEOF_WCHAR_T == 4
1763     free( ubuf );
1764 #endif
1765 }
1766
1767 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1768                             wxDouble *descent, wxDouble *externalLeading ) const
1769 {
1770     wxCHECK_RET( !m_font.IsNull(), wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
1771
1772     OSStatus status = noErr;
1773
1774     ATSUTextLayout atsuLayout;
1775     UniCharCount chars = str.length();
1776     UniChar* ubuf = NULL;
1777
1778 #if SIZEOF_WCHAR_T == 4
1779     wxMBConvUTF16 converter;
1780 #if wxUSE_UNICODE
1781     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1782     ubuf = (UniChar*) malloc( unicharlen + 2 );
1783     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1784 #else
1785     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1786     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1787     ubuf = (UniChar*) malloc( unicharlen + 2 );
1788     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1789 #endif
1790     chars = unicharlen / 2;
1791 #else
1792 #if wxUSE_UNICODE
1793     ubuf = (UniChar*) str.wc_str();
1794 #else
1795     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1796     chars = wxWcslen( wchar.data() );
1797     ubuf = (UniChar*) wchar.data();
1798 #endif
1799 #endif
1800
1801     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1802     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1803         &chars , &style , &atsuLayout );
1804
1805     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
1806
1807     ATSUTextMeasurement textBefore, textAfter;
1808     ATSUTextMeasurement textAscent, textDescent;
1809
1810     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1811         &textBefore , &textAfter, &textAscent , &textDescent );
1812
1813     if ( height )
1814         *height = FixedToInt(textAscent + textDescent);
1815     if ( descent )
1816         *descent = FixedToInt(textDescent);
1817     if ( externalLeading )
1818         *externalLeading = 0;
1819     if ( width )
1820         *width = FixedToInt(textAfter - textBefore);
1821
1822     ::ATSUDisposeTextLayout(atsuLayout);
1823 }
1824
1825 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1826 {
1827     widths.Empty();
1828     widths.Add(0, text.length());
1829
1830     if (text.empty())
1831         return;
1832
1833     ATSUTextLayout atsuLayout;
1834     UniCharCount chars = text.length();
1835     UniChar* ubuf = NULL;
1836
1837 #if SIZEOF_WCHAR_T == 4
1838     wxMBConvUTF16 converter;
1839 #if wxUSE_UNICODE
1840     size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
1841     ubuf = (UniChar*) malloc( unicharlen + 2 );
1842     converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );
1843 #else
1844     const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1845     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1846     ubuf = (UniChar*) malloc( unicharlen + 2 );
1847     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1848 #endif
1849     chars = unicharlen / 2;
1850 #else
1851 #if wxUSE_UNICODE
1852     ubuf = (UniChar*) text.wc_str();
1853 #else
1854     wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1855     chars = wxWcslen( wchar.data() );
1856     ubuf = (UniChar*) wchar.data();
1857 #endif
1858 #endif
1859
1860     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1861     ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1862         &chars , &style , &atsuLayout );
1863
1864     for ( int pos = 0; pos < (int)chars; pos ++ )
1865     {
1866         unsigned long actualNumberOfBounds = 0;
1867         ATSTrapezoid glyphBounds;
1868
1869         // We get a single bound, since the text should only require one. If it requires more, there is an issue
1870         OSStatus result;
1871         result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
1872             kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
1873         if (result != noErr || actualNumberOfBounds != 1 )
1874             return;
1875
1876         widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
1877         //unsigned char uch = s[i];
1878     }
1879
1880     ::ATSUDisposeTextLayout(atsuLayout);
1881 }
1882
1883 void * wxMacCoreGraphicsContext::GetNativeContext()
1884 {
1885     return m_cgContext;
1886 }
1887
1888 // concatenates this transform with the current transform of this context
1889 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1890 {
1891     if ( m_cgContext )
1892         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1893     else
1894         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
1895 }
1896
1897 // sets the transform of this context
1898 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
1899 {
1900     if ( m_cgContext )
1901     {
1902         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1903         transform = CGAffineTransformInvert( transform ) ;
1904         CGContextConcatCTM( m_cgContext, transform);
1905         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1906     }
1907     else
1908     {
1909         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
1910     }
1911 }
1912
1913 // gets the matrix of this context
1914 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
1915 {
1916     wxGraphicsMatrix m = CreateMatrix();
1917     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
1918         CGContextGetCTM( m_cgContext ));
1919     return m;
1920 }
1921
1922 //
1923 // Renderer
1924 //
1925
1926 //-----------------------------------------------------------------------------
1927 // wxMacCoreGraphicsRenderer declaration
1928 //-----------------------------------------------------------------------------
1929
1930 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
1931 {
1932 public :
1933     wxMacCoreGraphicsRenderer() {}
1934
1935     virtual ~wxMacCoreGraphicsRenderer() {}
1936
1937     // Context
1938
1939     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1940
1941     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1942
1943     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1944
1945     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1946
1947     virtual wxGraphicsContext * CreateMeasuringContext();
1948
1949     // Path
1950
1951     virtual wxGraphicsPath CreatePath();
1952
1953     // Matrix
1954
1955     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1956         wxDouble tx=0.0, wxDouble ty=0.0);
1957
1958
1959     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1960
1961     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1962
1963     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1964     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1965         const wxColour&c1, const wxColour&c2) ;
1966
1967     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1968     // with radius r and color cColor
1969     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1970         const wxColour &oColor, const wxColour &cColor) ;
1971
1972    // sets the font
1973     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1974
1975 private :
1976     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
1977 } ;
1978
1979 //-----------------------------------------------------------------------------
1980 // wxMacCoreGraphicsRenderer implementation
1981 //-----------------------------------------------------------------------------
1982
1983 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
1984
1985 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
1986
1987 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1988 {
1989     return &gs_MacCoreGraphicsRenderer;
1990 }
1991
1992 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc)
1993 {
1994    return new wxMacCoreGraphicsContext(this,(CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
1995 }
1996
1997 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
1998 {
1999     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2000 }
2001
2002
2003 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2004 {
2005     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
2006 }
2007
2008 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2009 {
2010     return new wxMacCoreGraphicsContext(this, window );
2011 }
2012
2013 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2014 {
2015     return new wxMacCoreGraphicsContext(this);
2016 }
2017
2018 // Path
2019
2020 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2021 {
2022     wxGraphicsPath m;
2023     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2024     return m;
2025 }
2026
2027
2028 // Matrix
2029
2030 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2031     wxDouble tx, wxDouble ty)
2032 {
2033     wxGraphicsMatrix m;
2034     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2035     data->Set( a,b,c,d,tx,ty ) ;
2036     m.SetRefData(data);
2037     return m;
2038 }
2039
2040 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2041 {
2042     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
2043         return wxNullGraphicsPen;
2044     else
2045     {
2046         wxGraphicsPen p;
2047         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2048         return p;
2049     }
2050 }
2051
2052 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2053 {
2054     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2055         return wxNullGraphicsBrush;
2056     else
2057     {
2058         wxGraphicsBrush p;
2059         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2060         return p;
2061     }
2062 }
2063
2064 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2065 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2066     const wxColour&c1, const wxColour&c2)
2067 {
2068     wxGraphicsBrush p;
2069     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2070     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
2071     p.SetRefData(d);
2072     return p;
2073 }
2074
2075 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2076 // with radius r and color cColor
2077 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2078     const wxColour &oColor, const wxColour &cColor)
2079 {
2080     wxGraphicsBrush p;
2081     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2082     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2083     p.SetRefData(d);
2084     return p;
2085 }
2086
2087 // sets the font
2088 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2089 {
2090     if ( font.Ok() )
2091     {
2092         wxGraphicsFont p;
2093         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2094         return p;
2095     }
2096     else
2097         return wxNullGraphicsFont;
2098 }
2099
2100
2101
2102 #endif // wxMAC_USE_CORE_GRAPHICS