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     // gets the component valuess of the matrix
 758     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 759                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 760
 761     // makes this the inverse matrix
 762     virtual void Invert();
 763
 764     // returns true if the elements of the transformation matrix are equal ?
 765     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 766
 767     // return true if this is the identity matrix
 768     virtual bool IsIdentity() const;
 769
 770     //
 771     // transformation
 772     //
 773
 774     // add the translation to this matrix
 775     virtual void Translate( wxDouble dx , wxDouble dy );
 776
 777     // add the scale to this matrix
 778     virtual void Scale( wxDouble xScale , wxDouble yScale );
 779
 780     // add the rotation to this matrix (radians)
 781     virtual void Rotate( wxDouble angle );
 782
 783     //
 784     // apply the transforms
 785     //
 786
 787     // applies that matrix to the point
 788     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 789
 790     // applies the matrix except for translations
 791     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 792
 793     // returns the native representation
 794     virtual void * GetNativeMatrix() const;
 795
 796 private :
 797     CGAffineTransform m_matrix;
 798 } ;
 799
 800 //-----------------------------------------------------------------------------
 801 // wxMacCoreGraphicsMatrix implementation
 802 //-----------------------------------------------------------------------------
 803
 804 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
 805 {
 806 }
 807
 808 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
 809 {
 810 }
 811
 812 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 813 {
 814     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
 815     m->m_matrix = m_matrix ;
 816     return m;
 817 }
 818
 819 // concatenates the matrix
 820 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 821 {
 822     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 823 }
 824
 825 // sets the matrix to the respective values
 826 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 827     wxDouble tx, wxDouble ty)
 828 {
 829     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 830 }
 831
 832 // gets the component valuess of the matrix
 833 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 834                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
 835 {
 836     if (a)  *a = m_matrix.a;
 837     if (b)  *b = m_matrix.b;
 838     if (c)  *c = m_matrix.c;
 839     if (d)  *d = m_matrix.d;
 840     if (tx) *tx= m_matrix.tx;
 841     if (ty) *ty= m_matrix.ty;
 842 }
 843
 844 // makes this the inverse matrix
 845 void wxMacCoreGraphicsMatrixData::Invert()
 846 {
 847     m_matrix = CGAffineTransformInvert( m_matrix );
 848 }
 849
 850 // returns true if the elements of the transformation matrix are equal ?
 851 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 852 {
 853     const CGAffineTransform* tm = (CGAffineTransform*) t->GetNativeMatrix();
 854 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
 855     if ( CGAffineTransformEqualToTransform!=NULL )
 856     {
 857         return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 858     }
 859     else
 860 #endif
 861     {
 862         return (
 863             m_matrix.a == tm->a &&
 864             m_matrix.b == tm->b &&
 865             m_matrix.c == tm->c &&
 866             m_matrix.d == tm->d &&
 867             m_matrix.tx == tm->tx &&
 868             m_matrix.ty == tm->ty ) ;
 869     }
 870 }
 871
 872 // return true if this is the identity matrix
 873 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
 874 {
 875     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
 876         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
 877 }
 878
 879 //
 880 // transformation
 881 //
 882
 883 // add the translation to this matrix
 884 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
 885 {
 886     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
 887 }
 888
 889 // add the scale to this matrix
 890 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
 891 {
 892     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
 893 }
 894
 895 // add the rotation to this matrix (radians)
 896 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
 897 {
 898     m_matrix = CGAffineTransformRotate( m_matrix, angle);
 899 }
 900
 901 //
 902 // apply the transforms
 903 //
 904
 905 // applies that matrix to the point
 906 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
 907 {
 908     CGPoint pt = CGPointApplyAffineTransform( CGPointMake(*x,*y), m_matrix);
 909
 910     *x = pt.x;
 911     *y = pt.y;
 912 }
 913
 914 // applies the matrix except for translations
 915 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
 916 {
 917     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake(*dx,*dy) , m_matrix );
 918     *dx = sz.width;
 919     *dy = sz.height;
 920 }
 921
 922 // returns the native representation
 923 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
 924 {
 925     return (void*) &m_matrix;
 926 }
 927
 928 //
 929 // Graphics Path
 930 //
 931
 932 //-----------------------------------------------------------------------------
 933 // wxMacCoreGraphicsPath declaration
 934 //-----------------------------------------------------------------------------
 935
 936 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
 937 {
 938 public :
 939     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
 940
 941     ~wxMacCoreGraphicsPathData();
 942
 943     virtual wxGraphicsObjectRefData *Clone() const;
 944
 945     // begins a new subpath at (x,y)
 946     virtual void MoveToPoint( wxDouble x, wxDouble y );
 947
 948     // adds a straight line from the current point to (x,y)
 949     virtual void AddLineToPoint( wxDouble x, wxDouble y );
 950
 951     // adds a cubic Bezier curve from the current point, using two control points and an end point
 952     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
 953
 954     // closes the current sub-path
 955     virtual void CloseSubpath();
 956
 957     // gets the last point of the current path, (0,0) if not yet set
 958     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
 959
 960     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 961     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
 962
 963     //
 964     // These are convenience functions which - if not available natively will be assembled
 965     // using the primitives from above
 966     //
 967
 968     // adds a quadratic Bezier curve from the current point, using a control point and an end point
 969     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
 970
 971     // appends a rectangle as a new closed subpath
 972     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 973
 974     // appends an ellipsis as a new closed subpath fitting the passed rectangle
 975     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 976
 977     // 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)
 978     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 979
 980     // adds another path
 981     virtual void AddPath( const wxGraphicsPathData* path );
 982
 983     // returns the native path
 984     virtual void * GetNativePath() const { return m_path; }
 985
 986     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
 987     virtual void UnGetNativePath(void *p) const {}
 988
 989     // transforms each point of this path by the matrix
 990     virtual void Transform( const wxGraphicsMatrixData* matrix );
 991
 992     // gets the bounding box enclosing all points (possibly including control points)
 993     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
 994
 995     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
 996 private :
 997     CGMutablePathRef m_path;
 998 };
 999
1000 //-----------------------------------------------------------------------------
1001 // wxMacCoreGraphicsPath implementation
1002 //-----------------------------------------------------------------------------
1003
1004 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1005 {
1006     if ( path )
1007         m_path = path;
1008     else
1009         m_path = CGPathCreateMutable();
1010 }
1011
1012 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1013 {
1014     CGPathRelease( m_path );
1015 }
1016
1017 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1018 {
1019     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1020     return clone ;
1021 }
1022
1023
1024 // opens (starts) a new subpath
1025 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1026 {
1027     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
1028 }
1029
1030 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1031 {
1032     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
1033 }
1034
1035 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1036 {
1037     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
1038 }
1039
1040 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1041 {
1042     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
1043 }
1044
1045 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1046 {
1047     CGRect cgRect = { { x , y } , { w , h } };
1048     CGPathAddRect( m_path , NULL , cgRect );
1049 }
1050
1051 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1052 {
1053     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1054 }
1055
1056 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1057 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1058 {
1059     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1060     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1061 }
1062
1063 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1064 {
1065     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1066 }
1067
1068 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1069 {
1070     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1071 }
1072
1073 // closes the current subpath
1074 void wxMacCoreGraphicsPathData::CloseSubpath()
1075 {
1076     CGPathCloseSubpath( m_path );
1077 }
1078
1079 // gets the last point of the current path, (0,0) if not yet set
1080 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1081 {
1082     CGPoint p = CGPathGetCurrentPoint( m_path );
1083     *x = p.x;
1084     *y = p.y;
1085 }
1086
1087 // transforms each point of this path by the matrix
1088 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1089 {
1090     CGMutablePathRef p = CGPathCreateMutable() ;
1091     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1092     CGPathRelease( m_path );
1093     m_path = p;
1094 }
1095
1096 // gets the bounding box enclosing all points (possibly including control points)
1097 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1098 {
1099     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1100     *x = bounds.origin.x;
1101     *y = bounds.origin.y;
1102     *w = bounds.size.width;
1103     *h = bounds.size.height;
1104 }
1105
1106 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, int fillStyle) const
1107 {
1108 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
1109     if ( CGPathContainsPoint!=NULL )
1110     {
1111         return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1112     }
1113     else
1114 #endif
1115     {
1116         // TODO : implementation for 10.3
1117         CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1118         return CGRectContainsPoint( bounds, CGPointMake(x,y) ) == 1;
1119     }
1120 }
1121
1122 //
1123 // Graphics Context
1124 //
1125
1126 //-----------------------------------------------------------------------------
1127 // wxMacCoreGraphicsContext declaration
1128 //-----------------------------------------------------------------------------
1129
1130 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1131 {
1132 public:
1133     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext );
1134
1135     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1136
1137     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1138
1139     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1140
1141     wxMacCoreGraphicsContext();
1142
1143     ~wxMacCoreGraphicsContext();
1144
1145     void Init();
1146
1147     // push the current state of the context, ie the transformation matrix on a stack
1148     virtual void PushState();
1149
1150     // pops a stored state from the stack
1151     virtual void PopState();
1152
1153     // clips drawings to the region
1154     virtual void Clip( const wxRegion &region );
1155
1156     // clips drawings to the rect
1157     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1158
1159     // resets the clipping to original extent
1160     virtual void ResetClip();
1161
1162     virtual void * GetNativeContext();
1163
1164     bool SetLogicalFunction( int function );
1165     //
1166     // transformation
1167     //
1168
1169     // translate
1170     virtual void Translate( wxDouble dx , wxDouble dy );
1171
1172     // scale
1173     virtual void Scale( wxDouble xScale , wxDouble yScale );
1174
1175     // rotate (radians)
1176     virtual void Rotate( wxDouble angle );
1177
1178     // concatenates this transform with the current transform of this context
1179     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1180
1181     // sets the transform of this context
1182     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1183
1184     // gets the matrix of this context
1185     virtual wxGraphicsMatrix GetTransform() const;
1186     //
1187     // setting the paint
1188     //
1189
1190     // strokes along a path with the current pen
1191     virtual void StrokePath( const wxGraphicsPath &path );
1192
1193     // fills a path with the current brush
1194     virtual void FillPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1195
1196     // draws a path by first filling and then stroking
1197     virtual void DrawPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1198
1199     virtual bool ShouldOffset() const
1200     {
1201         int penwidth = 0 ;
1202         if ( !m_pen.IsNull() )
1203         {
1204             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1205             if ( penwidth == 0 )
1206                 penwidth = 1;
1207         }
1208         return ( penwidth % 2 ) == 1;
1209     }
1210     //
1211     // text
1212     //
1213
1214     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1215
1216     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1217
1218     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1219         wxDouble *descent, wxDouble *externalLeading ) const;
1220
1221     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1222
1223     //
1224     // image support
1225     //
1226
1227     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1228
1229     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1230
1231     void SetNativeContext( CGContextRef cg );
1232
1233     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1234     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1235
1236 private:
1237     void EnsureIsValid();
1238
1239     CGContextRef m_cgContext;
1240     WindowRef m_windowRef;
1241     bool m_releaseContext;
1242     CGAffineTransform m_windowTransform;
1243
1244     wxMacCFRefHolder<HIShapeRef> m_clipRgn;
1245 };
1246
1247 //-----------------------------------------------------------------------------
1248 // device context implementation
1249 //
1250 // more and more of the dc functionality should be implemented by calling
1251 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1252 // also coordinate conversions should be moved to native matrix ops
1253 //-----------------------------------------------------------------------------
1254
1255 // we always stock two context states, one at entry, to be able to preserve the
1256 // state we were called with, the other one after changing to HI Graphics orientation
1257 // (this one is used for getting back clippings etc)
1258
1259 //-----------------------------------------------------------------------------
1260 // wxMacCoreGraphicsContext implementation
1261 //-----------------------------------------------------------------------------
1262
1263 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1264
1265 void wxMacCoreGraphicsContext::Init()
1266 {
1267     m_cgContext = NULL;
1268     m_releaseContext = false;
1269     m_windowRef = NULL;
1270
1271     HIRect r = CGRectMake(0,0,0,0);
1272     m_clipRgn.Set(HIShapeCreateWithRect(&r));
1273 }
1274
1275 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext ) : wxGraphicsContext(renderer)
1276 {
1277     Init();
1278     SetNativeContext(cgcontext);
1279 }
1280
1281 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1282 {
1283     Init();
1284     m_windowRef = window;
1285 }
1286
1287 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1288 {
1289     Init();
1290     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1291     int originX , originY;
1292     originX = originY = 0;
1293     window->MacWindowToRootWindow( &originX , &originY );
1294     Rect bounds;
1295     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1296
1297     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1298     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1299     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1300 }
1301
1302 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1303 {
1304     Init();
1305 }
1306
1307 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1308 {
1309     Init();
1310     wxLogDebug(wxT("Illegal Constructor called"));
1311 }
1312
1313 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1314 {
1315     SetNativeContext(NULL);
1316 }
1317
1318 void wxMacCoreGraphicsContext::EnsureIsValid()
1319 {
1320     if ( !m_cgContext )
1321     {
1322         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1323         wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
1324
1325         CGContextConcatCTM( m_cgContext, m_windowTransform );
1326                 CGContextSaveGState( m_cgContext );
1327                 m_releaseContext = true;
1328                 if ( !HIShapeIsEmpty(m_clipRgn) )
1329                 {
1330             // the clip region is in device coordinates, so we convert this again to user coordinates
1331             wxMacCFRefHolder<HIMutableShapeRef> hishape ;
1332             hishape.Set( HIShapeCreateMutableCopy( m_clipRgn ) );
1333             CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1334             HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1335                         HIShapeReplacePathInCGContext( hishape, m_cgContext );
1336                         CGContextClip( m_cgContext );
1337                 }
1338                 CGContextSaveGState( m_cgContext );
1339         }
1340 }
1341
1342 bool wxMacCoreGraphicsContext::SetLogicalFunction( int function )
1343 {
1344     if (m_logicalFunction == function)
1345         return true;
1346
1347     EnsureIsValid();
1348
1349     bool retval = false;
1350
1351     if ( function == wxCOPY )
1352     {
1353         retval = true;
1354 #if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
1355         if ( CGContextSetBlendMode != NULL )
1356         {
1357             CGContextSetBlendMode( m_cgContext, kCGBlendModeNormal );
1358             CGContextSetShouldAntialias( m_cgContext, true );
1359         }
1360 #endif
1361     }
1362     else if ( function == wxINVERT || function == wxXOR )
1363     {
1364 #if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
1365         if ( CGContextSetBlendMode != NULL )
1366         {
1367             // change color to white
1368             CGContextSetBlendMode( m_cgContext, kCGBlendModeExclusion );
1369             CGContextSetShouldAntialias( m_cgContext, false );
1370             retval = true;
1371         }
1372 #endif
1373     }
1374
1375     if (retval)
1376         m_logicalFunction = function;
1377     return retval ;
1378 }
1379
1380 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1381 {
1382     if( m_cgContext )
1383     {
1384         HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
1385         HIShapeReplacePathInCGContext( shape, m_cgContext );
1386         CGContextClip( m_cgContext );
1387         CFRelease( shape );
1388     }
1389     else
1390     {
1391         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1392         // to regions we try at least to have correct translations
1393         wxMacCFRefHolder<HIShapeRef> hishape ;
1394         hishape.Set( HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() ));
1395         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( hishape );
1396
1397         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1398         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1399         m_clipRgn.Set(mutableShape);
1400     }
1401 }
1402
1403 // clips drawings to the rect
1404 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1405 {
1406     HIRect r = CGRectMake( x , y , w , h );
1407     if ( m_cgContext )
1408     {
1409         CGContextClipToRect( m_cgContext, r );
1410     }
1411     else
1412     {
1413         // the clipping itself must be stored as device coordinates, otherwise
1414         // we cannot apply it back correctly
1415         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1416         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1417     }
1418 }
1419
1420     // resets the clipping to original extent
1421 void wxMacCoreGraphicsContext::ResetClip()
1422 {
1423     if ( m_cgContext )
1424     {
1425         // there is no way for clearing the clip, we can only revert to the stored
1426         // state, but then we have to make sure everything else is NOT restored
1427         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1428         CGContextRestoreGState( m_cgContext );
1429         CGContextSaveGState( m_cgContext );
1430         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1431         transformNew = CGAffineTransformInvert( transformNew ) ;
1432         CGContextConcatCTM( m_cgContext, transformNew);
1433         CGContextConcatCTM( m_cgContext, transform);
1434     }
1435     else
1436     {
1437         HIRect r = CGRectMake(0,0,0,0);
1438         m_clipRgn.Set(HIShapeCreateWithRect(&r));
1439     }
1440 }
1441
1442 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1443 {
1444     if ( m_pen.IsNull() )
1445         return ;
1446
1447     EnsureIsValid();
1448
1449     bool offset = ShouldOffset();
1450     if ( offset )
1451         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1452
1453     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1454     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1455     CGContextStrokePath( m_cgContext );
1456
1457     if ( offset )
1458         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1459 }
1460
1461 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , int fillStyle )
1462 {
1463     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1464     {
1465         // when using shading, we cannot draw pen and brush at the same time
1466         // revert to the base implementation of first filling and then stroking
1467         wxGraphicsContext::DrawPath( path, fillStyle );
1468         return;
1469     }
1470
1471     CGPathDrawingMode mode = kCGPathFill ;
1472     if ( m_brush.IsNull() )
1473     {
1474         if ( m_pen.IsNull() )
1475             return;
1476         else
1477             mode = kCGPathStroke;
1478     }
1479     else
1480     {
1481         if ( m_pen.IsNull() )
1482         {
1483             if ( fillStyle == wxODDEVEN_RULE )
1484                 mode = kCGPathEOFill;
1485             else
1486                 mode = kCGPathFill;
1487         }
1488         else
1489         {
1490             if ( fillStyle == wxODDEVEN_RULE )
1491                 mode = kCGPathEOFillStroke;
1492             else
1493                 mode = kCGPathFillStroke;
1494         }
1495     }
1496
1497     EnsureIsValid();
1498
1499     if ( !m_brush.IsNull() )
1500         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1501     if ( !m_pen.IsNull() )
1502         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1503
1504     bool offset = ShouldOffset();
1505
1506     if ( offset )
1507         CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
1508
1509     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1510     CGContextDrawPath( m_cgContext , mode );
1511
1512     if ( offset )
1513         CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
1514 }
1515
1516 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , int fillStyle )
1517 {
1518     if ( m_brush.IsNull() )
1519         return;
1520
1521     EnsureIsValid();
1522
1523     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1524     {
1525         CGContextSaveGState( m_cgContext );
1526         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1527         CGContextClip( m_cgContext );
1528         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1529         CGContextRestoreGState( m_cgContext);
1530     }
1531     else
1532     {
1533         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1534         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1535         if ( fillStyle == wxODDEVEN_RULE )
1536             CGContextEOFillPath( m_cgContext );
1537         else
1538             CGContextFillPath( m_cgContext );
1539     }
1540 }
1541
1542 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1543 {
1544     // we allow either setting or clearing but not replacing
1545     wxASSERT( m_cgContext == NULL || cg == NULL );
1546
1547     if ( m_cgContext )
1548     {
1549         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1550         CGContextRestoreGState( m_cgContext );
1551         CGContextRestoreGState( m_cgContext );
1552         if ( m_releaseContext )
1553             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1554         else
1555             CGContextRelease(m_cgContext);
1556     }
1557
1558
1559     m_cgContext = cg;
1560
1561     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1562     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1563     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1564     // for this one operation.
1565
1566     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1567     // can be removed.
1568     if (m_cgContext)
1569     {
1570         CGContextRetain(m_cgContext);
1571         CGContextSaveGState( m_cgContext );
1572         CGContextSaveGState( m_cgContext );
1573         m_releaseContext = false;
1574     }
1575 }
1576
1577 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1578 {
1579     if ( m_cgContext )
1580         CGContextTranslateCTM( m_cgContext, dx, dy );
1581     else
1582         m_windowTransform = CGAffineTransformTranslate(m_windowTransform,dx,dy);
1583 }
1584
1585 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1586 {
1587     if ( m_cgContext )
1588         CGContextScaleCTM( m_cgContext , xScale , yScale );
1589     else
1590         m_windowTransform = CGAffineTransformScale(m_windowTransform,xScale,yScale);
1591 }
1592
1593 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1594 {
1595     if ( m_cgContext )
1596         CGContextRotateCTM( m_cgContext , angle );
1597     else
1598         m_windowTransform = CGAffineTransformRotate(m_windowTransform,angle);
1599 }
1600
1601 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1602 {
1603     EnsureIsValid();
1604
1605     CGImageRef image = (CGImageRef)( bmp.CGImageCreate() );
1606     HIRect r = CGRectMake( x , y , w , h );
1607     if ( bmp.GetDepth() == 1 )
1608     {
1609         // is is a mask, the '1' in the mask tell where to draw the current brush
1610         if (  !m_brush.IsNull() )
1611         {
1612             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1613             {
1614                 // TODO clip to mask
1615             /*
1616                 CGContextSaveGState( m_cgContext );
1617                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1618                 CGContextClip( m_cgContext );
1619                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1620                 CGContextRestoreGState( m_cgContext);
1621             */
1622             }
1623             else
1624             {
1625                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1626                 HIViewDrawCGImage( m_cgContext , &r , image );
1627             }
1628         }
1629     }
1630     else
1631     {
1632         HIViewDrawCGImage( m_cgContext , &r , image );
1633     }
1634     CGImageRelease( image );
1635 }
1636
1637 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1638 {
1639     EnsureIsValid();
1640
1641     CGRect r = CGRectMake( 00 , 00 , w , h );
1642     CGContextSaveGState( m_cgContext );
1643     CGContextTranslateCTM( m_cgContext, x , y + h );
1644     CGContextScaleCTM( m_cgContext, 1, -1 );
1645     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1646         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1647     CGContextRestoreGState( m_cgContext );
1648 }
1649
1650 void wxMacCoreGraphicsContext::PushState()
1651 {
1652     EnsureIsValid();
1653
1654     CGContextSaveGState( m_cgContext );
1655 }
1656
1657 void wxMacCoreGraphicsContext::PopState()
1658 {
1659     EnsureIsValid();
1660
1661     CGContextRestoreGState( m_cgContext );
1662 }
1663
1664 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1665 {
1666     DrawText(str, x, y, 0.0);
1667 }
1668
1669 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1670 {
1671     if ( m_font.IsNull() )
1672         return;
1673
1674     EnsureIsValid();
1675
1676     OSStatus status = noErr;
1677     ATSUTextLayout atsuLayout;
1678     UniCharCount chars = str.length();
1679     UniChar* ubuf = NULL;
1680
1681 #if SIZEOF_WCHAR_T == 4
1682     wxMBConvUTF16 converter;
1683 #if wxUSE_UNICODE
1684     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1685     ubuf = (UniChar*) malloc( unicharlen + 2 );
1686     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1687 #else
1688     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1689     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1690     ubuf = (UniChar*) malloc( unicharlen + 2 );
1691     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1692 #endif
1693     chars = unicharlen / 2;
1694 #else
1695 #if wxUSE_UNICODE
1696     ubuf = (UniChar*) str.wc_str();
1697 #else
1698     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1699     chars = wxWcslen( wchar.data() );
1700     ubuf = (UniChar*) wchar.data();
1701 #endif
1702 #endif
1703
1704     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1705     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1706         &chars , &style , &atsuLayout );
1707
1708     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
1709
1710     status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1711     wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1712
1713     int iAngle = int( angle * RAD2DEG );
1714     if ( abs(iAngle) > 0 )
1715     {
1716         Fixed atsuAngle = IntToFixed( iAngle );
1717         ATSUAttributeTag atsuTags[] =
1718         {
1719             kATSULineRotationTag ,
1720         };
1721         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1722         {
1723             sizeof( Fixed ) ,
1724         };
1725         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1726         {
1727             &atsuAngle ,
1728         };
1729         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1730             atsuTags, atsuSizes, atsuValues );
1731     }
1732
1733     {
1734         ATSUAttributeTag atsuTags[] =
1735         {
1736             kATSUCGContextTag ,
1737         };
1738         ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1739         {
1740             sizeof( CGContextRef ) ,
1741         };
1742         ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1743         {
1744             &m_cgContext ,
1745         };
1746         status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1747             atsuTags, atsuSizes, atsuValues );
1748     }
1749
1750     ATSUTextMeasurement textBefore, textAfter;
1751     ATSUTextMeasurement ascent, descent;
1752
1753     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1754         &textBefore , &textAfter, &ascent , &descent );
1755
1756     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1757
1758     Rect rect;
1759     x += (int)(sin(angle) * FixedToInt(ascent));
1760     y += (int)(cos(angle) * FixedToInt(ascent));
1761
1762     status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1763         IntToFixed(x) , IntToFixed(y) , &rect );
1764     wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1765
1766     CGContextSaveGState(m_cgContext);
1767     CGContextTranslateCTM(m_cgContext, x, y);
1768     CGContextScaleCTM(m_cgContext, 1, -1);
1769     status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1770         IntToFixed(0) , IntToFixed(0) );
1771
1772     wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
1773
1774     CGContextRestoreGState(m_cgContext);
1775
1776     ::ATSUDisposeTextLayout(atsuLayout);
1777
1778 #if SIZEOF_WCHAR_T == 4
1779     free( ubuf );
1780 #endif
1781 }
1782
1783 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1784                             wxDouble *descent, wxDouble *externalLeading ) const
1785 {
1786     wxCHECK_RET( !m_font.IsNull(), wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
1787
1788     OSStatus status = noErr;
1789
1790     ATSUTextLayout atsuLayout;
1791     UniCharCount chars = str.length();
1792     UniChar* ubuf = NULL;
1793
1794 #if SIZEOF_WCHAR_T == 4
1795     wxMBConvUTF16 converter;
1796 #if wxUSE_UNICODE
1797     size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
1798     ubuf = (UniChar*) malloc( unicharlen + 2 );
1799     converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
1800 #else
1801     const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1802     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1803     ubuf = (UniChar*) malloc( unicharlen + 2 );
1804     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1805 #endif
1806     chars = unicharlen / 2;
1807 #else
1808 #if wxUSE_UNICODE
1809     ubuf = (UniChar*) str.wc_str();
1810 #else
1811     wxWCharBuffer wchar = str.wc_str( wxConvLocal );
1812     chars = wxWcslen( wchar.data() );
1813     ubuf = (UniChar*) wchar.data();
1814 #endif
1815 #endif
1816
1817     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1818     status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1819         &chars , &style , &atsuLayout );
1820
1821     wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
1822
1823     ATSUTextMeasurement textBefore, textAfter;
1824     ATSUTextMeasurement textAscent, textDescent;
1825
1826     status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1827         &textBefore , &textAfter, &textAscent , &textDescent );
1828
1829     if ( height )
1830         *height = FixedToInt(textAscent + textDescent);
1831     if ( descent )
1832         *descent = FixedToInt(textDescent);
1833     if ( externalLeading )
1834         *externalLeading = 0;
1835     if ( width )
1836         *width = FixedToInt(textAfter - textBefore);
1837
1838     ::ATSUDisposeTextLayout(atsuLayout);
1839 #if SIZEOF_WCHAR_T == 4
1840     free( ubuf ) ;
1841 #endif
1842 }
1843
1844 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1845 {
1846     widths.Empty();
1847     widths.Add(0, text.length());
1848
1849     if (text.empty())
1850         return;
1851
1852     ATSUTextLayout atsuLayout;
1853     UniCharCount chars = text.length();
1854     UniChar* ubuf = NULL;
1855
1856 #if SIZEOF_WCHAR_T == 4
1857     wxMBConvUTF16 converter;
1858 #if wxUSE_UNICODE
1859     size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
1860     ubuf = (UniChar*) malloc( unicharlen + 2 );
1861     converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );
1862 #else
1863     const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1864     size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
1865     ubuf = (UniChar*) malloc( unicharlen + 2 );
1866     converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
1867 #endif
1868     chars = unicharlen / 2;
1869 #else
1870 #if wxUSE_UNICODE
1871     ubuf = (UniChar*) text.wc_str();
1872 #else
1873     wxWCharBuffer wchar = text.wc_str( wxConvLocal );
1874     chars = wxWcslen( wchar.data() );
1875     ubuf = (UniChar*) wchar.data();
1876 #endif
1877 #endif
1878
1879     ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1880     ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
1881         &chars , &style , &atsuLayout );
1882
1883     for ( int pos = 0; pos < (int)chars; pos ++ )
1884     {
1885         unsigned long actualNumberOfBounds = 0;
1886         ATSTrapezoid glyphBounds;
1887
1888         // We get a single bound, since the text should only require one. If it requires more, there is an issue
1889         OSStatus result;
1890         result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
1891             kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
1892         if (result != noErr || actualNumberOfBounds != 1 )
1893             return;
1894
1895         widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
1896         //unsigned char uch = s[i];
1897     }
1898
1899     ::ATSUDisposeTextLayout(atsuLayout);
1900 #if SIZEOF_WCHAR_T == 4
1901     free( ubuf ) ;
1902 #endif
1903 }
1904
1905 void * wxMacCoreGraphicsContext::GetNativeContext()
1906 {
1907     return m_cgContext;
1908 }
1909
1910 // concatenates this transform with the current transform of this context
1911 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1912 {
1913     if ( m_cgContext )
1914         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1915     else
1916         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
1917 }
1918
1919 // sets the transform of this context
1920 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
1921 {
1922     if ( m_cgContext )
1923     {
1924         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1925         transform = CGAffineTransformInvert( transform ) ;
1926         CGContextConcatCTM( m_cgContext, transform);
1927         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
1928     }
1929     else
1930     {
1931         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
1932     }
1933 }
1934
1935 // gets the matrix of this context
1936 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
1937 {
1938     wxGraphicsMatrix m = CreateMatrix();
1939     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
1940         CGContextGetCTM( m_cgContext ));
1941     return m;
1942 }
1943
1944 //
1945 // Renderer
1946 //
1947
1948 //-----------------------------------------------------------------------------
1949 // wxMacCoreGraphicsRenderer declaration
1950 //-----------------------------------------------------------------------------
1951
1952 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
1953 {
1954 public :
1955     wxMacCoreGraphicsRenderer() {}
1956
1957     virtual ~wxMacCoreGraphicsRenderer() {}
1958
1959     // Context
1960
1961     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
1962
1963     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
1964
1965     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
1966
1967     virtual wxGraphicsContext * CreateContext( wxWindow* window );
1968
1969     virtual wxGraphicsContext * CreateMeasuringContext();
1970
1971     // Path
1972
1973     virtual wxGraphicsPath CreatePath();
1974
1975     // Matrix
1976
1977     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
1978         wxDouble tx=0.0, wxDouble ty=0.0);
1979
1980
1981     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
1982
1983     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
1984
1985     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
1986     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
1987         const wxColour&c1, const wxColour&c2) ;
1988
1989     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
1990     // with radius r and color cColor
1991     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
1992         const wxColour &oColor, const wxColour &cColor) ;
1993
1994    // sets the font
1995     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
1996
1997 private :
1998     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
1999 } ;
2000
2001 //-----------------------------------------------------------------------------
2002 // wxMacCoreGraphicsRenderer implementation
2003 //-----------------------------------------------------------------------------
2004
2005 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2006
2007 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2008
2009 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2010 {
2011     return &gs_MacCoreGraphicsRenderer;
2012 }
2013
2014 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc)
2015 {
2016    return new wxMacCoreGraphicsContext(this,(CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
2017 }
2018
2019 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2020 {
2021     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2022 }
2023
2024
2025 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2026 {
2027     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
2028 }
2029
2030 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2031 {
2032     return new wxMacCoreGraphicsContext(this, window );
2033 }
2034
2035 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2036 {
2037     return new wxMacCoreGraphicsContext(this);
2038 }
2039
2040 // Path
2041
2042 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2043 {
2044     wxGraphicsPath m;
2045     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2046     return m;
2047 }
2048
2049
2050 // Matrix
2051
2052 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2053     wxDouble tx, wxDouble ty)
2054 {
2055     wxGraphicsMatrix m;
2056     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2057     data->Set( a,b,c,d,tx,ty ) ;
2058     m.SetRefData(data);
2059     return m;
2060 }
2061
2062 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2063 {
2064     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
2065         return wxNullGraphicsPen;
2066     else
2067     {
2068         wxGraphicsPen p;
2069         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2070         return p;
2071     }
2072 }
2073
2074 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2075 {
2076     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2077         return wxNullGraphicsBrush;
2078     else
2079     {
2080         wxGraphicsBrush p;
2081         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2082         return p;
2083     }
2084 }
2085
2086 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2087 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2088     const wxColour&c1, const wxColour&c2)
2089 {
2090     wxGraphicsBrush p;
2091     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2092     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
2093     p.SetRefData(d);
2094     return p;
2095 }
2096
2097 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2098 // with radius r and color cColor
2099 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2100     const wxColour &oColor, const wxColour &cColor)
2101 {
2102     wxGraphicsBrush p;
2103     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2104     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2105     p.SetRefData(d);
2106     return p;
2107 }
2108
2109 // sets the font
2110 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2111 {
2112     if ( font.Ok() )
2113     {
2114         wxGraphicsFont p;
2115         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2116         return p;
2117     }
2118     else
2119         return wxNullGraphicsFont;
2120 }
2121
2122
2123
2124 #endif // wxMAC_USE_CORE_GRAPHICS