src/mac/carbon/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/dccg.cpp
   3 // Purpose:     wxDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/graphics.h"
  15 #include "wx/private/graphics.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/dcclient.h"
  19     #include "wx/dcmemory.h"
  20     #include "wx/log.h"
  21     #include "wx/region.h"
  22     #include "wx/image.h"
  23     #include "wx/icon.h"
  24 #endif
  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 #ifdef __WXMAC__
  36     #include "wx/mac/uma.h"
  37 #else
  38     #include "CoreServices/CoreServices.h"
  39     #include "ApplicationServices/ApplicationServices.h"
  40     #include "wx/mac/corefoundation/cfstring.h"
  41     #include "wx/cocoa/dcclient.h"
  42 #endif
  43
  44 #ifdef __WXCOCOA__
  45
  46 CGColorSpaceRef wxMacGetGenericRGBColorSpace()
  47 {
  48     static wxCFRef<CGColorSpaceRef> genericRGBColorSpace;
  49
  50     if (genericRGBColorSpace == NULL)
  51     {
  52         genericRGBColorSpace.reset( CGColorSpaceCreateWithName( kCGColorSpaceGenericRGB ) );
  53     }
  54
  55     return genericRGBColorSpace;
  56 }
  57
  58 int UMAGetSystemVersion()
  59 {
  60     return 0x1050;
  61 }
  62
  63
  64 #define wxMAC_USE_CORE_TEXT 1
  65
  66 #endif
  67
  68 //-----------------------------------------------------------------------------
  69 // constants
  70 //-----------------------------------------------------------------------------
  71
  72 #if !defined( __DARWIN__ ) || defined(__MWERKS__)
  73 #ifndef M_PI
  74 const double M_PI = 3.14159265358979;
  75 #endif
  76 #endif
  77
  78 static const double RAD2DEG = 180.0 / M_PI;
  79
  80 //
  81 // Pen, Brushes and Fonts
  82 //
  83
  84 #pragma mark -
  85 #pragma mark wxMacCoreGraphicsPattern, ImagePattern, HatchPattern classes
  86
  87 OSStatus wxMacDrawCGImage(
  88                   CGContextRef    inContext,
  89                   const CGRect *  inBounds,
  90                   CGImageRef      inImage)
  91 {
  92 #if defined( __LP64__ ) || defined(__WXCOCOA__)
  93     // todo flip
  94     CGContextDrawImage(inContext, *inBounds, inImage );
  95     return noErr;
  96 #else
  97     return HIViewDrawCGImage( inContext, inBounds, inImage );
  98 #endif
  99 }
 100
 101 CGColorRef wxMacCreateCGColor( const wxColour& col )
 102 {
 103     CGColorRef retval = 0;
 104 #ifdef __WXMAC__
 105     retval = col.CreateCGColor();
 106 #else
 107 // TODO add conversion NSColor - CGColorRef (obj-c)
 108 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 109     if ( CGColorCreateGenericRGB )
 110         retval = CGColorCreateGenericRGB( col.Red() / 255.0 , col.Green() / 255.0, col.Blue() / 255.0, col.Alpha() / 255.0 );
 111     else
 112 #endif
 113     {
 114         CGFloat components[4] = { col.Red() / 255.0, col.Green() / 255.0, col.Blue()  / 255.0, col.Alpha() / 255.0 } ;
 115         retval = CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ;
 116     }
 117
 118 #endif
 119     return retval;
 120 }
 121
 122 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 && defined(wxMAC_USE_CORE_TEXT)
 123
 124 CTFontRef wxMacCreateCTFont( const wxFont& font )
 125 {
 126 #ifdef __WXMAC__
 127     return wxCFRetain((CTFontRef) font.MacGetCTFont());
 128 #else
 129     return CTFontCreateWithName( wxCFStringRef( font.GetFaceName(), wxLocale::GetSystemEncoding() ) , font.GetPointSize() , NULL );
 130 #endif
 131 }
 132
 133 #endif
 134
 135 // CGPattern wrapper class: always allocate on heap, never call destructor
 136
 137 class wxMacCoreGraphicsPattern
 138 {
 139 public :
 140     wxMacCoreGraphicsPattern() {}
 141
 142     // is guaranteed to be called only with a non-Null CGContextRef
 143     virtual void Render( CGContextRef ctxRef ) = 0;
 144
 145     operator CGPatternRef() const { return m_patternRef; }
 146
 147 protected :
 148     virtual ~wxMacCoreGraphicsPattern()
 149     {
 150         // as this is called only when the m_patternRef is been released;
 151         // don't release it again
 152     }
 153
 154     static void _Render( void *info, CGContextRef ctxRef )
 155     {
 156         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 157         if ( self && ctxRef )
 158             self->Render( ctxRef );
 159     }
 160
 161     static void _Dispose( void *info )
 162     {
 163         wxMacCoreGraphicsPattern* self = (wxMacCoreGraphicsPattern*) info;
 164         delete self;
 165     }
 166
 167     CGPatternRef m_patternRef;
 168
 169     static const CGPatternCallbacks ms_Callbacks;
 170 };
 171
 172 const CGPatternCallbacks wxMacCoreGraphicsPattern::ms_Callbacks = { 0, &wxMacCoreGraphicsPattern::_Render, &wxMacCoreGraphicsPattern::_Dispose };
 173
 174 class ImagePattern : public wxMacCoreGraphicsPattern
 175 {
 176 public :
 177     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
 178     {
 179         wxASSERT( bmp && bmp->Ok() );
 180 #ifdef __WXMAC__
 181         Init( (CGImageRef) bmp->CreateCGImage() , transform );
 182 #endif
 183     }
 184
 185     // ImagePattern takes ownership of CGImageRef passed in
 186     ImagePattern( CGImageRef image , const CGAffineTransform& transform )
 187     {
 188         if ( image )
 189             CFRetain( image );
 190
 191         Init( image , transform );
 192     }
 193
 194     virtual void Render( CGContextRef ctxRef )
 195     {
 196         if (m_image != NULL)
 197             wxMacDrawCGImage( ctxRef, &m_imageBounds, m_image );
 198     }
 199
 200 protected :
 201     void Init( CGImageRef image, const CGAffineTransform& transform )
 202     {
 203         m_image = image;
 204         if ( m_image )
 205         {
 206             m_imageBounds = CGRectMake( 0.0, 0.0, (CGFloat)CGImageGetWidth( m_image ), (CGFloat)CGImageGetHeight( m_image ) );
 207             m_patternRef = CGPatternCreate(
 208                 this , m_imageBounds, transform ,
 209                 m_imageBounds.size.width, m_imageBounds.size.height,
 210                 kCGPatternTilingNoDistortion, true , &wxMacCoreGraphicsPattern::ms_Callbacks );
 211         }
 212     }
 213
 214     virtual ~ImagePattern()
 215     {
 216         if ( m_image )
 217             CGImageRelease( m_image );
 218     }
 219
 220     CGImageRef m_image;
 221     CGRect m_imageBounds;
 222 };
 223
 224 class HatchPattern : public wxMacCoreGraphicsPattern
 225 {
 226 public :
 227     HatchPattern( int hatchstyle, const CGAffineTransform& transform )
 228     {
 229         m_hatch = hatchstyle;
 230         m_imageBounds = CGRectMake( 0.0, 0.0, 8.0 , 8.0 );
 231         m_patternRef = CGPatternCreate(
 232             this , m_imageBounds, transform ,
 233             m_imageBounds.size.width, m_imageBounds.size.height,
 234             kCGPatternTilingNoDistortion, false , &wxMacCoreGraphicsPattern::ms_Callbacks );
 235     }
 236
 237     void StrokeLineSegments( CGContextRef ctxRef , const CGPoint pts[] , size_t count )
 238     {
 239         CGContextStrokeLineSegments( ctxRef , pts , count );
 240     }
 241
 242     virtual void Render( CGContextRef ctxRef )
 243     {
 244         switch ( m_hatch )
 245         {
 246             case wxBDIAGONAL_HATCH :
 247                 {
 248                     CGPoint pts[] =
 249                     {
 250                     { 8.0 , 0.0 } , { 0.0 , 8.0 }
 251                     };
 252                     StrokeLineSegments( ctxRef , pts , 2 );
 253                 }
 254                 break;
 255
 256             case wxCROSSDIAG_HATCH :
 257                 {
 258                     CGPoint pts[] =
 259                     {
 260                         { 0.0 , 0.0 } , { 8.0 , 8.0 } ,
 261                         { 8.0 , 0.0 } , { 0.0 , 8.0 }
 262                     };
 263                     StrokeLineSegments( ctxRef , pts , 4 );
 264                 }
 265                 break;
 266
 267             case wxFDIAGONAL_HATCH :
 268                 {
 269                     CGPoint pts[] =
 270                     {
 271                     { 0.0 , 0.0 } , { 8.0 , 8.0 }
 272                     };
 273                     StrokeLineSegments( ctxRef , pts , 2 );
 274                 }
 275                 break;
 276
 277             case wxCROSS_HATCH :
 278                 {
 279                     CGPoint pts[] =
 280                     {
 281                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 282                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 283                     };
 284                     StrokeLineSegments( ctxRef , pts , 4 );
 285                 }
 286                 break;
 287
 288             case wxHORIZONTAL_HATCH :
 289                 {
 290                     CGPoint pts[] =
 291                     {
 292                     { 0.0 , 4.0 } , { 8.0 , 4.0 } ,
 293                     };
 294                     StrokeLineSegments( ctxRef , pts , 2 );
 295                 }
 296                 break;
 297
 298             case wxVERTICAL_HATCH :
 299                 {
 300                     CGPoint pts[] =
 301                     {
 302                     { 4.0 , 0.0 } , { 4.0 , 8.0 } ,
 303                     };
 304                     StrokeLineSegments( ctxRef , pts , 2 );
 305                 }
 306                 break;
 307
 308             default:
 309                 break;
 310         }
 311     }
 312
 313 protected :
 314     virtual ~HatchPattern() {}
 315
 316     CGRect      m_imageBounds;
 317     int         m_hatch;
 318 };
 319
 320 class wxMacCoreGraphicsPenData : public wxGraphicsObjectRefData
 321 {
 322 public:
 323     wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
 324     ~wxMacCoreGraphicsPenData();
 325
 326     void Init();
 327     virtual void Apply( wxGraphicsContext* context );
 328     virtual wxDouble GetWidth() { return m_width; }
 329
 330 protected :
 331     CGLineCap m_cap;
 332     wxCFRef<CGColorRef> m_color;
 333     wxCFRef<CGColorSpaceRef> m_colorSpace;
 334
 335     CGLineJoin m_join;
 336     CGFloat m_width;
 337
 338     int m_count;
 339     const CGFloat *m_lengths;
 340     CGFloat *m_userLengths;
 341
 342
 343     bool m_isPattern;
 344     wxCFRef<CGPatternRef> m_pattern;
 345     CGFloat* m_patternColorComponents;
 346 };
 347
 348 wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer, const wxPen &pen ) :
 349     wxGraphicsObjectRefData( renderer )
 350 {
 351     Init();
 352
 353     m_color.reset( wxMacCreateCGColor( pen.GetColour() ) ) ;
 354
 355     // TODO: * m_dc->m_scaleX
 356     m_width = pen.GetWidth();
 357     if (m_width <= 0.0)
 358         m_width = 0.1;
 359
 360     switch ( pen.GetCap() )
 361     {
 362         case wxCAP_ROUND :
 363             m_cap = kCGLineCapRound;
 364             break;
 365
 366         case wxCAP_PROJECTING :
 367             m_cap = kCGLineCapSquare;
 368             break;
 369
 370         case wxCAP_BUTT :
 371             m_cap = kCGLineCapButt;
 372             break;
 373
 374         default :
 375             m_cap = kCGLineCapButt;
 376             break;
 377     }
 378
 379     switch ( pen.GetJoin() )
 380     {
 381         case wxJOIN_BEVEL :
 382             m_join = kCGLineJoinBevel;
 383             break;
 384
 385         case wxJOIN_MITER :
 386             m_join = kCGLineJoinMiter;
 387             break;
 388
 389         case wxJOIN_ROUND :
 390             m_join = kCGLineJoinRound;
 391             break;
 392
 393         default :
 394             m_join = kCGLineJoinMiter;
 395             break;
 396     }
 397
 398     const CGFloat dashUnit = m_width < 1.0 ? 1.0 : m_width;
 399
 400     const CGFloat dotted[] = { dashUnit , dashUnit + 2.0 };
 401     static const CGFloat short_dashed[] = { 9.0 , 6.0 };
 402     static const CGFloat dashed[] = { 19.0 , 9.0 };
 403     static const CGFloat dotted_dashed[] = { 9.0 , 6.0 , 3.0 , 3.0 };
 404
 405     switch ( pen.GetStyle() )
 406     {
 407         case wxSOLID :
 408             break;
 409
 410         case wxDOT :
 411             m_count = WXSIZEOF(dotted);
 412             m_userLengths = new CGFloat[ m_count ] ;
 413             memcpy( m_userLengths, dotted, sizeof(dotted) );
 414             m_lengths = m_userLengths;
 415             break;
 416
 417         case wxLONG_DASH :
 418             m_count = WXSIZEOF(dashed);
 419             m_lengths = dashed;
 420             break;
 421
 422         case wxSHORT_DASH :
 423             m_count = WXSIZEOF(short_dashed);
 424             m_lengths = short_dashed;
 425             break;
 426
 427         case wxDOT_DASH :
 428             m_count = WXSIZEOF(dotted_dashed);
 429             m_lengths = dotted_dashed;
 430             break;
 431
 432         case wxUSER_DASH :
 433             wxDash *dashes;
 434             m_count = pen.GetDashes( &dashes );
 435             if ((dashes != NULL) && (m_count > 0))
 436             {
 437                 m_userLengths = new CGFloat[m_count];
 438                 for ( int i = 0; i < m_count; ++i )
 439                 {
 440                     m_userLengths[i] = dashes[i] * dashUnit;
 441
 442                     if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
 443                         m_userLengths[i] = dashUnit + 2.0;
 444                     else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
 445                         m_userLengths[i] = dashUnit;
 446                 }
 447             }
 448             m_lengths = m_userLengths;
 449             break;
 450
 451         case wxSTIPPLE :
 452             {
 453                 wxBitmap* bmp = pen.GetStipple();
 454                 if ( bmp && bmp->Ok() )
 455                 {
 456                     m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 457                     m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 458                     m_patternColorComponents = new CGFloat[1] ;
 459                     m_patternColorComponents[0] = 1.0;
 460                     m_isPattern = true;
 461                 }
 462             }
 463             break;
 464
 465         default :
 466             {
 467                 m_isPattern = true;
 468                 m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 469                 m_pattern.reset( (CGPatternRef) *( new HatchPattern( pen.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 470                 m_patternColorComponents = new CGFloat[4] ;
 471                 m_patternColorComponents[0] = pen.GetColour().Red() / 255.0;
 472                 m_patternColorComponents[1] = pen.GetColour().Green() / 255.0;
 473                 m_patternColorComponents[2] = pen.GetColour().Blue() / 255.0;
 474                 m_patternColorComponents[3] =  pen.GetColour().Alpha() / 255.0;
 475             }
 476             break;
 477     }
 478     if ((m_lengths != NULL) && (m_count > 0))
 479     {
 480         // force the line cap, otherwise we get artifacts (overlaps) and just solid lines
 481         m_cap = kCGLineCapButt;
 482     }
 483 }
 484
 485 wxMacCoreGraphicsPenData::~wxMacCoreGraphicsPenData()
 486 {
 487     delete[] m_userLengths;
 488     delete[] m_patternColorComponents;
 489 }
 490
 491 void wxMacCoreGraphicsPenData::Init()
 492 {
 493     m_lengths = NULL;
 494     m_userLengths = NULL;
 495     m_width = 0;
 496     m_count = 0;
 497     m_patternColorComponents = NULL;
 498     m_isPattern = false;
 499 }
 500
 501 void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 502 {
 503     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 504     CGContextSetLineWidth( cg , m_width );
 505     CGContextSetLineJoin( cg , m_join );
 506
 507     CGContextSetLineDash( cg , 0 , m_lengths , m_count );
 508     CGContextSetLineCap( cg , m_cap );
 509
 510     if ( m_isPattern )
 511     {
 512         CGAffineTransform matrix = CGContextGetCTM( cg );
 513         CGContextSetPatternPhase( cg, CGSizeMake(matrix.tx, matrix.ty) );
 514         CGContextSetStrokeColorSpace( cg , m_colorSpace );
 515         CGContextSetStrokePattern( cg, m_pattern , m_patternColorComponents );
 516     }
 517     else
 518     {
 519         if ( context->GetLogicalFunction() == wxINVERT || context->GetLogicalFunction() == wxXOR )
 520         {
 521             CGContextSetRGBStrokeColor( cg , 1.0, 1.0 , 1.0, 1.0 );
 522         }
 523         else
 524             CGContextSetStrokeColorWithColor( cg , m_color );
 525     }
 526 }
 527
 528 //
 529 // Brush
 530 //
 531
 532 static const char *gs_stripedback_xpm[] = {
 533 /* columns rows colors chars-per-pixel */
 534 "4 4 2 1",
 535 ". c #F0F0F0",
 536 "X c #ECECEC",
 537 /* pixels */
 538 "....",
 539 "....",
 540 "XXXX",
 541 "XXXX"
 542 };
 543
 544 wxBitmap gs_stripedback_bmp( wxImage( (const char* const* ) gs_stripedback_xpm  ), -1 ) ;
 545
 546 // make sure we all use one class for all conversions from wx to native colour
 547
 548 class wxMacCoreGraphicsColour
 549 {
 550     public:
 551         wxMacCoreGraphicsColour();
 552         wxMacCoreGraphicsColour(const wxBrush &brush);
 553         ~wxMacCoreGraphicsColour();
 554
 555         void Apply( CGContextRef cgContext );
 556     protected:
 557         void Init();
 558         wxCFRef<CGColorRef> m_color;
 559         wxCFRef<CGColorSpaceRef> m_colorSpace;
 560
 561         bool m_isPattern;
 562         wxCFRef<CGPatternRef> m_pattern;
 563         CGFloat* m_patternColorComponents;
 564 } ;
 565
 566 wxMacCoreGraphicsColour::~wxMacCoreGraphicsColour()
 567 {
 568     delete[] m_patternColorComponents;
 569 }
 570
 571 void wxMacCoreGraphicsColour::Init()
 572 {
 573     m_isPattern = false;
 574     m_patternColorComponents = NULL;
 575 }
 576
 577 void wxMacCoreGraphicsColour::Apply( CGContextRef cgContext )
 578 {
 579     if ( m_isPattern )
 580     {
 581         CGAffineTransform matrix = CGContextGetCTM( cgContext );
 582         CGContextSetPatternPhase( cgContext, CGSizeMake(matrix.tx, matrix.ty) );
 583         CGContextSetFillColorSpace( cgContext , m_colorSpace );
 584         CGContextSetFillPattern( cgContext, m_pattern , m_patternColorComponents );
 585     }
 586     else
 587     {
 588         CGContextSetFillColorWithColor( cgContext, m_color );
 589     }
 590 }
 591
 592 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour()
 593 {
 594     Init();
 595 }
 596
 597 wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
 598 {
 599     Init();
 600     if ( brush.GetStyle() == wxSOLID )
 601     {
 602         m_color.reset( wxMacCreateCGColor( brush.GetColour() ));
 603     }
 604     else if ( brush.IsHatch() )
 605     {
 606         m_isPattern = true;
 607         m_colorSpace.reset( CGColorSpaceCreatePattern( wxMacGetGenericRGBColorSpace() ) );
 608         m_pattern.reset( (CGPatternRef) *( new HatchPattern( brush.GetStyle() , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 609
 610         m_patternColorComponents = new CGFloat[4] ;
 611         m_patternColorComponents[0] = brush.GetColour().Red() / 255.0;
 612         m_patternColorComponents[1] = brush.GetColour().Green() / 255.0;
 613         m_patternColorComponents[2] = brush.GetColour().Blue() / 255.0;
 614         m_patternColorComponents[3] = brush.GetColour().Alpha() / 255.0;
 615     }
 616     else
 617     {
 618         // now brush is a bitmap
 619         wxBitmap* bmp = brush.GetStipple();
 620         if ( bmp && bmp->Ok() )
 621         {
 622             m_isPattern = true;
 623             m_patternColorComponents = new CGFloat[1] ;
 624             m_patternColorComponents[0] = 1.0;
 625             m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
 626             m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
 627         }
 628     }
 629 }
 630
 631 class wxMacCoreGraphicsBrushData : public wxGraphicsObjectRefData
 632 {
 633 public:
 634     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer );
 635     wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
 636     ~wxMacCoreGraphicsBrushData ();
 637
 638     virtual void Apply( wxGraphicsContext* context );
 639     void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 640         const wxColour&c1, const wxColour&c2 );
 641     void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 642     const wxColour &oColor, const wxColour &cColor );
 643
 644     virtual bool IsShading() { return m_isShading; }
 645     CGShadingRef GetShading() { return m_shading; }
 646 protected:
 647     CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
 648     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
 649     virtual void Init();
 650
 651     wxMacCoreGraphicsColour m_cgColor;
 652
 653     bool m_isShading;
 654     CGFunctionRef m_gradientFunction;
 655     CGShadingRef m_shading;
 656     CGFloat *m_gradientComponents;
 657 };
 658
 659 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 660 {
 661     Init();
 662 }
 663
 664 void wxMacCoreGraphicsBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
 665         const wxColour&c1, const wxColour&c2 )
 666 {
 667     m_gradientFunction = CreateGradientFunction( c1, c2 );
 668     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake(x1,y1), CGPointMake(x2,y2), m_gradientFunction, true, true ) ;
 669     m_isShading = true ;
 670 }
 671
 672 void wxMacCoreGraphicsBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
 673     const wxColour &oColor, const wxColour &cColor )
 674 {
 675     m_gradientFunction = CreateGradientFunction( oColor, cColor );
 676     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake(xo,yo), 0, CGPointMake(xc,yc), radius, m_gradientFunction, true, true ) ;
 677     m_isShading = true ;
 678 }
 679
 680 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData(wxGraphicsRenderer* renderer, const wxBrush &brush) : wxGraphicsObjectRefData( renderer ),
 681     m_cgColor( brush )
 682 {
 683     Init();
 684
 685 }
 686
 687 wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 688 {
 689     if ( m_shading )
 690         CGShadingRelease(m_shading);
 691
 692     if( m_gradientFunction )
 693         CGFunctionRelease(m_gradientFunction);
 694
 695     delete[] m_gradientComponents;
 696 }
 697
 698 void wxMacCoreGraphicsBrushData::Init()
 699 {
 700     m_gradientFunction = NULL;
 701     m_shading = NULL;
 702     m_gradientComponents = NULL;
 703     m_isShading = false;
 704 }
 705
 706 void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 707 {
 708     CGContextRef cg = (CGContextRef) context->GetNativeContext();
 709
 710     if ( m_isShading )
 711     {
 712         // nothing to set as shades are processed by clipping using the path and filling
 713     }
 714     else
 715     {
 716         m_cgColor.Apply( cg );
 717     }
 718 }
 719
 720 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 721 {
 722     CGFloat* colors = (CGFloat*) info ;
 723     CGFloat f = *in;
 724     for( int i = 0 ; i < 4 ; ++i )
 725     {
 726         out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
 727     }
 728 }
 729
 730 CGFunctionRef wxMacCoreGraphicsBrushData::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
 731 {
 732     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
 733     static const CGFloat input_value_range [2] = { 0, 1 };
 734     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
 735     m_gradientComponents = new CGFloat[8] ;
 736     m_gradientComponents[0] = c1.Red() / 255.0;
 737     m_gradientComponents[1] = c1.Green() / 255.0;
 738     m_gradientComponents[2] = c1.Blue() / 255.0;
 739     m_gradientComponents[3] = c1.Alpha() / 255.0;
 740     m_gradientComponents[4] = c2.Red() / 255.0;
 741     m_gradientComponents[5] = c2.Green() / 255.0;
 742     m_gradientComponents[6] = c2.Blue() / 255.0;
 743     m_gradientComponents[7] = c2.Alpha() / 255.0;
 744
 745     return CGFunctionCreate ( m_gradientComponents,  1,
 746                             input_value_range,
 747                             4,
 748                             output_value_ranges,
 749                             &callbacks);
 750 }
 751
 752 //
 753 // Font
 754 //
 755
 756 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 757 {
 758 public:
 759     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
 760     ~wxMacCoreGraphicsFontData();
 761
 762 #if wxMAC_USE_ATSU_TEXT
 763     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 764 #endif
 765 #if wxMAC_USE_CORE_TEXT
 766     CTFontRef GetCTFont() const { return m_ctFont ; }
 767 #endif
 768     wxColour GetColour() const { return m_colour ; }
 769
 770     bool GetUnderlined() const { return m_underlined ; }
 771 private :
 772     wxColour m_colour;
 773     bool m_underlined;
 774 #if wxMAC_USE_ATSU_TEXT
 775     ATSUStyle m_macATSUIStyle;
 776 #endif
 777 #if wxMAC_USE_CORE_TEXT
 778     wxCFRef< CTFontRef > m_ctFont;
 779 #endif
 780 };
 781
 782 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 783 {
 784     m_colour = col;
 785     m_underlined = font.GetUnderlined();
 786
 787 #if wxMAC_USE_CORE_TEXT
 788     m_ctFont.reset( wxMacCreateCTFont( font ) );
 789 #endif
 790 #if wxMAC_USE_ATSU_TEXT
 791     OSStatus status = noErr;
 792     m_macATSUIStyle = NULL;
 793
 794     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 795
 796     wxASSERT_MSG( status == noErr, wxT("couldn't create ATSU style") );
 797
 798     // we need the scale here ...
 799
 800     Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
 801     RGBColor atsuColor ;
 802     col.GetRGBColor( &atsuColor );
 803     ATSUAttributeTag atsuTags[] =
 804     {
 805             kATSUSizeTag ,
 806             kATSUColorTag ,
 807     };
 808     ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 809     {
 810             sizeof( Fixed ) ,
 811             sizeof( RGBColor ) ,
 812     };
 813     ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
 814     {
 815             &atsuSize ,
 816             &atsuColor ,
 817     };
 818
 819     status = ::ATSUSetAttributes(
 820         m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
 821         atsuTags, atsuSizes, atsuValues);
 822
 823     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 824 #endif
 825 #if wxMAC_USE_CG_TEXT
 826 #endif
 827 }
 828
 829 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 830 {
 831 #if wxMAC_USE_CORE_TEXT
 832 #endif
 833 #if wxMAC_USE_ATSU_TEXT
 834     if ( m_macATSUIStyle )
 835     {
 836         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
 837         m_macATSUIStyle = NULL;
 838     }
 839 #endif
 840 #if wxMAC_USE_CG_TEXT
 841 #endif
 842 }
 843
 844 class wxMacCoreGraphicsBitmapData : public wxGraphicsObjectRefData
 845 {
 846 public:
 847     wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap );
 848     ~wxMacCoreGraphicsBitmapData();
 849
 850     virtual CGImageRef GetBitmap() { return m_bitmap; }
 851 private :
 852     CGImageRef m_bitmap;
 853 };
 854
 855 wxMacCoreGraphicsBitmapData::wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap ) : wxGraphicsObjectRefData( renderer )
 856 {
 857     m_bitmap = bitmap;
 858 }
 859
 860 wxMacCoreGraphicsBitmapData::~wxMacCoreGraphicsBitmapData()
 861 {
 862     CGImageRelease( m_bitmap );
 863 }
 864
 865 //
 866 // Graphics Matrix
 867 //
 868
 869 //-----------------------------------------------------------------------------
 870 // wxMacCoreGraphicsMatrix declaration
 871 //-----------------------------------------------------------------------------
 872
 873 class WXDLLIMPEXP_CORE wxMacCoreGraphicsMatrixData : public wxGraphicsMatrixData
 874 {
 875 public :
 876     wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) ;
 877
 878     virtual ~wxMacCoreGraphicsMatrixData() ;
 879
 880     virtual wxGraphicsObjectRefData *Clone() const ;
 881
 882     // concatenates the matrix
 883     virtual void Concat( const wxGraphicsMatrixData *t );
 884
 885     // sets the matrix to the respective values
 886     virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
 887         wxDouble tx=0.0, wxDouble ty=0.0);
 888
 889     // gets the component valuess of the matrix
 890     virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
 891                      wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
 892
 893     // makes this the inverse matrix
 894     virtual void Invert();
 895
 896     // returns true if the elements of the transformation matrix are equal ?
 897     virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
 898
 899     // return true if this is the identity matrix
 900     virtual bool IsIdentity() const;
 901
 902     //
 903     // transformation
 904     //
 905
 906     // add the translation to this matrix
 907     virtual void Translate( wxDouble dx , wxDouble dy );
 908
 909     // add the scale to this matrix
 910     virtual void Scale( wxDouble xScale , wxDouble yScale );
 911
 912     // add the rotation to this matrix (radians)
 913     virtual void Rotate( wxDouble angle );
 914
 915     //
 916     // apply the transforms
 917     //
 918
 919     // applies that matrix to the point
 920     virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
 921
 922     // applies the matrix except for translations
 923     virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
 924
 925     // returns the native representation
 926     virtual void * GetNativeMatrix() const;
 927
 928 private :
 929     CGAffineTransform m_matrix;
 930 } ;
 931
 932 //-----------------------------------------------------------------------------
 933 // wxMacCoreGraphicsMatrix implementation
 934 //-----------------------------------------------------------------------------
 935
 936 wxMacCoreGraphicsMatrixData::wxMacCoreGraphicsMatrixData(wxGraphicsRenderer* renderer) : wxGraphicsMatrixData(renderer)
 937 {
 938 }
 939
 940 wxMacCoreGraphicsMatrixData::~wxMacCoreGraphicsMatrixData()
 941 {
 942 }
 943
 944 wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 945 {
 946     wxMacCoreGraphicsMatrixData* m = new wxMacCoreGraphicsMatrixData(GetRenderer()) ;
 947     m->m_matrix = m_matrix ;
 948     return m;
 949 }
 950
 951 // concatenates the matrix
 952 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 953 {
 954     m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
 955 }
 956
 957 // sets the matrix to the respective values
 958 void wxMacCoreGraphicsMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
 959     wxDouble tx, wxDouble ty)
 960 {
 961     m_matrix = CGAffineTransformMake(a,b,c,d,tx,ty);
 962 }
 963
 964 // gets the component valuess of the matrix
 965 void wxMacCoreGraphicsMatrixData::Get(wxDouble* a, wxDouble* b,  wxDouble* c,
 966                                       wxDouble* d, wxDouble* tx, wxDouble* ty) const
 967 {
 968     if (a)  *a = m_matrix.a;
 969     if (b)  *b = m_matrix.b;
 970     if (c)  *c = m_matrix.c;
 971     if (d)  *d = m_matrix.d;
 972     if (tx) *tx= m_matrix.tx;
 973     if (ty) *ty= m_matrix.ty;
 974 }
 975
 976 // makes this the inverse matrix
 977 void wxMacCoreGraphicsMatrixData::Invert()
 978 {
 979     m_matrix = CGAffineTransformInvert( m_matrix );
 980 }
 981
 982 // returns true if the elements of the transformation matrix are equal ?
 983 bool wxMacCoreGraphicsMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
 984 {
 985     return CGAffineTransformEqualToTransform(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()));
 986 }
 987
 988 // return true if this is the identity matrix
 989 bool wxMacCoreGraphicsMatrixData::IsIdentity() const
 990 {
 991     return ( m_matrix.a == 1 && m_matrix.d == 1 &&
 992         m_matrix.b == 0 && m_matrix.d == 0 && m_matrix.tx == 0 && m_matrix.ty == 0);
 993 }
 994
 995 //
 996 // transformation
 997 //
 998
 999 // add the translation to this matrix
1000 void wxMacCoreGraphicsMatrixData::Translate( wxDouble dx , wxDouble dy )
1001 {
1002     m_matrix = CGAffineTransformTranslate( m_matrix, dx, dy);
1003 }
1004
1005 // add the scale to this matrix
1006 void wxMacCoreGraphicsMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1007 {
1008     m_matrix = CGAffineTransformScale( m_matrix, xScale, yScale);
1009 }
1010
1011 // add the rotation to this matrix (radians)
1012 void wxMacCoreGraphicsMatrixData::Rotate( wxDouble angle )
1013 {
1014     m_matrix = CGAffineTransformRotate( m_matrix, angle);
1015 }
1016
1017 //
1018 // apply the transforms
1019 //
1020
1021 // applies that matrix to the point
1022 void wxMacCoreGraphicsMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1023 {
1024     CGPoint pt = CGPointApplyAffineTransform( CGPointMake(*x,*y), m_matrix);
1025
1026     *x = pt.x;
1027     *y = pt.y;
1028 }
1029
1030 // applies the matrix except for translations
1031 void wxMacCoreGraphicsMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1032 {
1033     CGSize sz = CGSizeApplyAffineTransform( CGSizeMake(*dx,*dy) , m_matrix );
1034     *dx = sz.width;
1035     *dy = sz.height;
1036 }
1037
1038 // returns the native representation
1039 void * wxMacCoreGraphicsMatrixData::GetNativeMatrix() const
1040 {
1041     return (void*) &m_matrix;
1042 }
1043
1044 //
1045 // Graphics Path
1046 //
1047
1048 //-----------------------------------------------------------------------------
1049 // wxMacCoreGraphicsPath declaration
1050 //-----------------------------------------------------------------------------
1051
1052 class WXDLLEXPORT wxMacCoreGraphicsPathData : public wxGraphicsPathData
1053 {
1054 public :
1055     wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path = NULL);
1056
1057     ~wxMacCoreGraphicsPathData();
1058
1059     virtual wxGraphicsObjectRefData *Clone() const;
1060
1061     // begins a new subpath at (x,y)
1062     virtual void MoveToPoint( wxDouble x, wxDouble y );
1063
1064     // adds a straight line from the current point to (x,y)
1065     virtual void AddLineToPoint( wxDouble x, wxDouble y );
1066
1067     // adds a cubic Bezier curve from the current point, using two control points and an end point
1068     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
1069
1070     // closes the current sub-path
1071     virtual void CloseSubpath();
1072
1073     // gets the last point of the current path, (0,0) if not yet set
1074     virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
1075
1076     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1077     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise );
1078
1079     //
1080     // These are convenience functions which - if not available natively will be assembled
1081     // using the primitives from above
1082     //
1083
1084     // adds a quadratic Bezier curve from the current point, using a control point and an end point
1085     virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
1086
1087     // appends a rectangle as a new closed subpath
1088     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1089
1090     // appends an ellipsis as a new closed subpath fitting the passed rectangle
1091     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
1092
1093     // 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)
1094     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
1095
1096     // adds another path
1097     virtual void AddPath( const wxGraphicsPathData* path );
1098
1099     // returns the native path
1100     virtual void * GetNativePath() const { return m_path; }
1101
1102     // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
1103     virtual void UnGetNativePath(void *WXUNUSED(p)) const {}
1104
1105     // transforms each point of this path by the matrix
1106     virtual void Transform( const wxGraphicsMatrixData* matrix );
1107
1108     // gets the bounding box enclosing all points (possibly including control points)
1109     virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
1110
1111     virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
1112 private :
1113     CGMutablePathRef m_path;
1114 };
1115
1116 //-----------------------------------------------------------------------------
1117 // wxMacCoreGraphicsPath implementation
1118 //-----------------------------------------------------------------------------
1119
1120 wxMacCoreGraphicsPathData::wxMacCoreGraphicsPathData( wxGraphicsRenderer* renderer, CGMutablePathRef path) : wxGraphicsPathData(renderer)
1121 {
1122     if ( path )
1123         m_path = path;
1124     else
1125         m_path = CGPathCreateMutable();
1126 }
1127
1128 wxMacCoreGraphicsPathData::~wxMacCoreGraphicsPathData()
1129 {
1130     CGPathRelease( m_path );
1131 }
1132
1133 wxGraphicsObjectRefData* wxMacCoreGraphicsPathData::Clone() const
1134 {
1135     wxMacCoreGraphicsPathData* clone = new wxMacCoreGraphicsPathData(GetRenderer(),CGPathCreateMutableCopy(m_path));
1136     return clone ;
1137 }
1138
1139
1140 // opens (starts) a new subpath
1141 void wxMacCoreGraphicsPathData::MoveToPoint( wxDouble x1 , wxDouble y1 )
1142 {
1143     CGPathMoveToPoint( m_path , NULL , x1 , y1 );
1144 }
1145
1146 void wxMacCoreGraphicsPathData::AddLineToPoint( wxDouble x1 , wxDouble y1 )
1147 {
1148     CGPathAddLineToPoint( m_path , NULL , x1 , y1 );
1149 }
1150
1151 void wxMacCoreGraphicsPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1152 {
1153     CGPathAddCurveToPoint( m_path , NULL , cx1 , cy1 , cx2, cy2, x , y );
1154 }
1155
1156 void wxMacCoreGraphicsPathData::AddQuadCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble x, wxDouble y )
1157 {
1158     CGPathAddQuadCurveToPoint( m_path , NULL , cx1 , cy1 , x , y );
1159 }
1160
1161 void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1162 {
1163     CGRect cgRect = { { x , y } , { w , h } };
1164     CGPathAddRect( m_path , NULL , cgRect );
1165 }
1166
1167 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
1168 {
1169     CGPathAddArc( m_path , NULL , x , y , r , 0.0 , 2 * M_PI , true );
1170 }
1171
1172 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
1173 void wxMacCoreGraphicsPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise )
1174 {
1175     // inverse direction as we the 'normal' state is a y axis pointing down, ie mirrored to the standard core graphics setup
1176     CGPathAddArc( m_path, NULL , x, y, r, startAngle, endAngle, !clockwise);
1177 }
1178
1179 void wxMacCoreGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
1180 {
1181     CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
1182 }
1183
1184 void wxMacCoreGraphicsPathData::AddPath( const wxGraphicsPathData* path )
1185 {
1186     CGPathAddPath( m_path , NULL, (CGPathRef) path->GetNativePath() );
1187 }
1188
1189 // closes the current subpath
1190 void wxMacCoreGraphicsPathData::CloseSubpath()
1191 {
1192     CGPathCloseSubpath( m_path );
1193 }
1194
1195 // gets the last point of the current path, (0,0) if not yet set
1196 void wxMacCoreGraphicsPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1197 {
1198     CGPoint p = CGPathGetCurrentPoint( m_path );
1199     *x = p.x;
1200     *y = p.y;
1201 }
1202
1203 // transforms each point of this path by the matrix
1204 void wxMacCoreGraphicsPathData::Transform( const wxGraphicsMatrixData* matrix )
1205 {
1206     CGMutablePathRef p = CGPathCreateMutable() ;
1207     CGPathAddPath( p, (CGAffineTransform*) matrix->GetNativeMatrix() , m_path );
1208     CGPathRelease( m_path );
1209     m_path = p;
1210 }
1211
1212 // gets the bounding box enclosing all points (possibly including control points)
1213 void wxMacCoreGraphicsPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1214 {
1215     CGRect bounds = CGPathGetBoundingBox( m_path ) ;
1216     *x = bounds.origin.x;
1217     *y = bounds.origin.y;
1218     *w = bounds.size.width;
1219     *h = bounds.size.height;
1220 }
1221
1222 bool wxMacCoreGraphicsPathData::Contains( wxDouble x, wxDouble y, int fillStyle) const
1223 {
1224     return CGPathContainsPoint( m_path, NULL, CGPointMake(x,y), fillStyle == wxODDEVEN_RULE );
1225 }
1226
1227 //
1228 // Graphics Context
1229 //
1230
1231 //-----------------------------------------------------------------------------
1232 // wxMacCoreGraphicsContext declaration
1233 //-----------------------------------------------------------------------------
1234
1235 class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
1236 {
1237 public:
1238     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width = 0, wxDouble height = 0 );
1239
1240     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window );
1241
1242     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window );
1243
1244     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
1245
1246     wxMacCoreGraphicsContext();
1247
1248     ~wxMacCoreGraphicsContext();
1249
1250     void Init();
1251
1252     // returns the size of the graphics context in device coordinates
1253     virtual void GetSize( wxDouble* width, wxDouble* height);
1254
1255     virtual void StartPage( wxDouble width, wxDouble height );
1256
1257     virtual void EndPage();
1258
1259     virtual void Flush();
1260
1261     // push the current state of the context, ie the transformation matrix on a stack
1262     virtual void PushState();
1263
1264     // pops a stored state from the stack
1265     virtual void PopState();
1266
1267     // clips drawings to the region
1268     virtual void Clip( const wxRegion &region );
1269
1270     // clips drawings to the rect
1271     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1272
1273     // resets the clipping to original extent
1274     virtual void ResetClip();
1275
1276     virtual void * GetNativeContext();
1277
1278     bool SetLogicalFunction( int function );
1279     //
1280     // transformation
1281     //
1282
1283     // translate
1284     virtual void Translate( wxDouble dx , wxDouble dy );
1285
1286     // scale
1287     virtual void Scale( wxDouble xScale , wxDouble yScale );
1288
1289     // rotate (radians)
1290     virtual void Rotate( wxDouble angle );
1291
1292     // concatenates this transform with the current transform of this context
1293     virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
1294
1295     // sets the transform of this context
1296     virtual void SetTransform( const wxGraphicsMatrix& matrix );
1297
1298     // gets the matrix of this context
1299     virtual wxGraphicsMatrix GetTransform() const;
1300     //
1301     // setting the paint
1302     //
1303
1304     // strokes along a path with the current pen
1305     virtual void StrokePath( const wxGraphicsPath &path );
1306
1307     // fills a path with the current brush
1308     virtual void FillPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1309
1310     // draws a path by first filling and then stroking
1311     virtual void DrawPath( const wxGraphicsPath &path, int fillStyle = wxODDEVEN_RULE );
1312
1313     virtual bool ShouldOffset() const
1314     {
1315         int penwidth = 0 ;
1316         if ( !m_pen.IsNull() )
1317         {
1318             penwidth = (int)((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->GetWidth();
1319             if ( penwidth == 0 )
1320                 penwidth = 1;
1321         }
1322         return ( penwidth % 2 ) == 1;
1323     }
1324     //
1325     // text
1326     //
1327
1328     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y );
1329
1330     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
1331
1332     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
1333         wxDouble *descent, wxDouble *externalLeading ) const;
1334
1335     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
1336
1337     //
1338     // image support
1339     //
1340
1341     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1342
1343     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1344
1345     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
1346
1347     void SetNativeContext( CGContextRef cg );
1348
1349     DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
1350     DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
1351
1352 private:
1353     void EnsureIsValid();
1354
1355     CGContextRef m_cgContext;
1356     WindowRef m_windowRef;
1357     bool m_releaseContext;
1358     CGAffineTransform m_windowTransform;
1359     wxDouble m_width;
1360     wxDouble m_height;
1361
1362     wxCFRef<HIShapeRef> m_clipRgn;
1363 };
1364
1365 //-----------------------------------------------------------------------------
1366 // device context implementation
1367 //
1368 // more and more of the dc functionality should be implemented by calling
1369 // the appropricate wxMacCoreGraphicsContext, but we will have to do that step by step
1370 // also coordinate conversions should be moved to native matrix ops
1371 //-----------------------------------------------------------------------------
1372
1373 // we always stock two context states, one at entry, to be able to preserve the
1374 // state we were called with, the other one after changing to HI Graphics orientation
1375 // (this one is used for getting back clippings etc)
1376
1377 //-----------------------------------------------------------------------------
1378 // wxMacCoreGraphicsContext implementation
1379 //-----------------------------------------------------------------------------
1380
1381 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
1382
1383 class wxQuartzOffsetHelper
1384 {
1385 public :
1386     wxQuartzOffsetHelper( CGContextRef cg , bool offset )
1387     {
1388         m_cg = cg;
1389         m_offset = offset;
1390         if ( m_offset )
1391             CGContextTranslateCTM( m_cg, 0.5, 0.5 );
1392     }
1393     ~wxQuartzOffsetHelper( )
1394     {
1395         if ( m_offset )
1396             CGContextTranslateCTM( m_cg, -0.5, -0.5 );
1397     }
1398 public :
1399     CGContextRef m_cg;
1400     bool m_offset;
1401 } ;
1402
1403 void wxMacCoreGraphicsContext::Init()
1404 {
1405     m_cgContext = NULL;
1406     m_releaseContext = false;
1407     m_windowRef = NULL;
1408     m_width = 0;
1409     m_height = 0;
1410     CGRect r = CGRectMake(0,0,0,0);
1411     m_clipRgn.reset(HIShapeCreateWithRect(&r));
1412 }
1413
1414 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
1415 {
1416     Init();
1417     SetNativeContext(cgcontext);
1418     m_width = width;
1419     m_height = height;
1420 }
1421
1422 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, WindowRef window ): wxGraphicsContext(renderer)
1423 {
1424     Init();
1425     m_windowRef = window;
1426 }
1427
1428 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, wxWindow* window ): wxGraphicsContext(renderer)
1429 {
1430     Init();
1431
1432     int originX , originY;
1433     originX = originY = 0;
1434
1435     Rect bounds = { 0,0,0,0 };
1436 #if defined( __LP64__ ) || defined(__WXCOCOA__)
1437 #else
1438     m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
1439     window->MacWindowToRootWindow( &originX , &originY );
1440     GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
1441 #endif
1442     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
1443     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
1444     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
1445 }
1446
1447 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsContext(renderer)
1448 {
1449     Init();
1450 }
1451
1452 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
1453 {
1454     Init();
1455     wxLogDebug(wxT("Illegal Constructor called"));
1456 }
1457
1458 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
1459 {
1460     SetNativeContext(NULL);
1461 }
1462
1463 void wxMacCoreGraphicsContext::GetSize( wxDouble* width, wxDouble* height)
1464 {
1465     *width = m_width;
1466     *height = m_height;
1467 }
1468
1469
1470 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
1471 {
1472     CGRect r;
1473     if ( width != 0 && height != 0)
1474         r = CGRectMake( 0 , 0 , width  , height );
1475     else
1476         r = CGRectMake( 0 , 0 , m_width  , m_height );
1477
1478     CGContextBeginPage(m_cgContext,  &r );
1479 //    CGContextTranslateCTM( m_cgContext , 0 ,  height == 0 ? m_height : height );
1480 //    CGContextScaleCTM( m_cgContext , 1 , -1 );
1481 }
1482
1483 void wxMacCoreGraphicsContext::EndPage()
1484 {
1485     CGContextEndPage(m_cgContext);
1486 }
1487
1488 void wxMacCoreGraphicsContext::Flush()
1489 {
1490     CGContextFlush(m_cgContext);
1491 }
1492
1493 void wxMacCoreGraphicsContext::EnsureIsValid()
1494 {
1495     if ( !m_cgContext )
1496     {
1497         OSStatus status =
1498 #if ! ( defined( __LP64__ ) || defined(__WXCOCOA__) )
1499             QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
1500 #else
1501             paramErr;
1502 #endif
1503         if ( status != noErr )
1504         {
1505             wxFAIL_MSG("Cannot nest wxDCs on the same window");
1506         }
1507
1508         CGContextConcatCTM( m_cgContext, m_windowTransform );
1509         CGContextSaveGState( m_cgContext );
1510         m_releaseContext = true;
1511         if ( !HIShapeIsEmpty(m_clipRgn) )
1512         {
1513             // the clip region is in device coordinates, so we convert this again to user coordinates
1514             wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
1515             CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
1516             HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
1517             HIShapeReplacePathInCGContext( hishape, m_cgContext );
1518             CGContextClip( m_cgContext );
1519         }
1520         CGContextSaveGState( m_cgContext );
1521     }
1522 }
1523
1524 // TODO test whether the private CGContextSetCompositeOperation works under 10.3 (using NSCompositingModes)
1525
1526 bool wxMacCoreGraphicsContext::SetLogicalFunction( int function )
1527 {
1528     if (m_logicalFunction == function)
1529         return true;
1530
1531     EnsureIsValid();
1532
1533     bool retval = false;
1534     bool shouldAntiAlias = true;
1535     CGBlendMode mode = kCGBlendModeNormal;
1536
1537 #if defined(__WXMAC__) && ( MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 )
1538     if ( UMAGetSystemVersion() >= 0x1050 )
1539     {
1540         retval = true;
1541         switch ( function )
1542         {
1543             // TODO find best corresponding porter duff modes
1544             case wxCOPY :
1545                 mode = kCGBlendModeCopy;
1546                 break;
1547             case wxCLEAR :
1548                 mode = kCGBlendModeClear;
1549                 break;
1550             case wxXOR :
1551                 mode = kCGBlendModeXOR;
1552                 shouldAntiAlias = false;
1553                 break;
1554             default :
1555                 retval = false;
1556                 break;
1557         }
1558     }
1559     else
1560 #endif
1561     {
1562         if ( function == wxCOPY )
1563         {
1564             retval = true;
1565         }
1566         else if ( function == wxINVERT || function == wxXOR )
1567         {
1568             // change color to white
1569             mode = kCGBlendModeExclusion;
1570             shouldAntiAlias = false;
1571             retval = true;
1572         }
1573     }
1574
1575     if (retval)
1576     {
1577         m_logicalFunction = function;
1578         CGContextSetBlendMode( m_cgContext, mode );
1579         CGContextSetShouldAntialias(m_cgContext, shouldAntiAlias);
1580     }
1581     return retval ;
1582 }
1583
1584 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
1585 {
1586 #ifdef __WXMAC__
1587     if( m_cgContext )
1588     {
1589         HIShapeReplacePathInCGContext( region.GetWXHRGN() , m_cgContext );
1590         CGContextClip( m_cgContext );
1591     }
1592     else
1593     {
1594         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
1595         // to regions we try at least to have correct translations
1596         HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
1597
1598         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
1599         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
1600         m_clipRgn.reset(mutableShape);
1601     }
1602 #endif
1603 }
1604
1605 // clips drawings to the rect
1606 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1607 {
1608     CGRect r = CGRectMake( x , y , w , h );
1609     if ( m_cgContext )
1610     {
1611         CGContextClipToRect( m_cgContext, r );
1612     }
1613     else
1614     {
1615         // the clipping itself must be stored as device coordinates, otherwise
1616         // we cannot apply it back correctly
1617         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
1618         m_clipRgn.reset(HIShapeCreateWithRect(&r));
1619     }
1620 }
1621
1622     // resets the clipping to original extent
1623 void wxMacCoreGraphicsContext::ResetClip()
1624 {
1625     if ( m_cgContext )
1626     {
1627         // there is no way for clearing the clip, we can only revert to the stored
1628         // state, but then we have to make sure everything else is NOT restored
1629         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
1630         CGContextRestoreGState( m_cgContext );
1631         CGContextSaveGState( m_cgContext );
1632         CGAffineTransform transformNew = CGContextGetCTM( m_cgContext );
1633         transformNew = CGAffineTransformInvert( transformNew ) ;
1634         CGContextConcatCTM( m_cgContext, transformNew);
1635         CGContextConcatCTM( m_cgContext, transform);
1636     }
1637     else
1638     {
1639         CGRect r = CGRectMake(0,0,0,0);
1640         m_clipRgn.reset(HIShapeCreateWithRect(&r));
1641     }
1642 }
1643
1644 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
1645 {
1646     if ( m_pen.IsNull() )
1647         return ;
1648
1649     EnsureIsValid();
1650
1651     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1652
1653     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1654     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1655     CGContextStrokePath( m_cgContext );
1656 }
1657
1658 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , int fillStyle )
1659 {
1660     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1661     {
1662         // when using shading, we cannot draw pen and brush at the same time
1663         // revert to the base implementation of first filling and then stroking
1664         wxGraphicsContext::DrawPath( path, fillStyle );
1665         return;
1666     }
1667
1668     CGPathDrawingMode mode = kCGPathFill ;
1669     if ( m_brush.IsNull() )
1670     {
1671         if ( m_pen.IsNull() )
1672             return;
1673         else
1674             mode = kCGPathStroke;
1675     }
1676     else
1677     {
1678         if ( m_pen.IsNull() )
1679         {
1680             if ( fillStyle == wxODDEVEN_RULE )
1681                 mode = kCGPathEOFill;
1682             else
1683                 mode = kCGPathFill;
1684         }
1685         else
1686         {
1687             if ( fillStyle == wxODDEVEN_RULE )
1688                 mode = kCGPathEOFillStroke;
1689             else
1690                 mode = kCGPathFillStroke;
1691         }
1692     }
1693
1694     EnsureIsValid();
1695
1696     if ( !m_brush.IsNull() )
1697         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1698     if ( !m_pen.IsNull() )
1699         ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
1700
1701     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
1702
1703     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1704     CGContextDrawPath( m_cgContext , mode );
1705 }
1706
1707 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , int fillStyle )
1708 {
1709     if ( m_brush.IsNull() )
1710         return;
1711
1712     EnsureIsValid();
1713
1714     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1715     {
1716         CGContextSaveGState( m_cgContext );
1717         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1718         CGContextClip( m_cgContext );
1719         CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1720         CGContextRestoreGState( m_cgContext);
1721     }
1722     else
1723     {
1724         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1725         CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1726         if ( fillStyle == wxODDEVEN_RULE )
1727             CGContextEOFillPath( m_cgContext );
1728         else
1729             CGContextFillPath( m_cgContext );
1730     }
1731 }
1732
1733 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
1734 {
1735     // we allow either setting or clearing but not replacing
1736     wxASSERT( m_cgContext == NULL || cg == NULL );
1737
1738     if ( m_cgContext )
1739     {
1740         // TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
1741         CGContextRestoreGState( m_cgContext );
1742         CGContextRestoreGState( m_cgContext );
1743         if ( m_releaseContext )
1744         {
1745 #if ! ( defined( __LP64__ ) || defined(__WXCOCOA__) )
1746             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
1747 #endif
1748         }
1749         else
1750             CGContextRelease(m_cgContext);
1751     }
1752
1753
1754     m_cgContext = cg;
1755
1756     // FIXME: This check is needed because currently we need to use a DC/GraphicsContext
1757     // in order to get font properties, like wxFont::GetPixelSize, but since we don't have
1758     // a native window attached to use, I create a wxGraphicsContext with a NULL CGContextRef
1759     // for this one operation.
1760
1761     // When wxFont::GetPixelSize on Mac no longer needs a graphics context, this check
1762     // can be removed.
1763     if (m_cgContext)
1764     {
1765         CGContextRetain(m_cgContext);
1766         CGContextSaveGState( m_cgContext );
1767         CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
1768         CGContextSaveGState( m_cgContext );
1769         m_releaseContext = false;
1770     }
1771 }
1772
1773 void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
1774 {
1775     if ( m_cgContext )
1776         CGContextTranslateCTM( m_cgContext, dx, dy );
1777     else
1778         m_windowTransform = CGAffineTransformTranslate(m_windowTransform,dx,dy);
1779 }
1780
1781 void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
1782 {
1783     if ( m_cgContext )
1784         CGContextScaleCTM( m_cgContext , xScale , yScale );
1785     else
1786         m_windowTransform = CGAffineTransformScale(m_windowTransform,xScale,yScale);
1787 }
1788
1789 void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
1790 {
1791     if ( m_cgContext )
1792         CGContextRotateCTM( m_cgContext , angle );
1793     else
1794         m_windowTransform = CGAffineTransformRotate(m_windowTransform,angle);
1795 }
1796
1797 void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1798 {
1799     wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1800     DrawBitmap(bitmap, x, y, w, h);
1801 }
1802
1803 void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1804 {
1805     EnsureIsValid();
1806 #ifdef __WXMAC__
1807     CGImageRef image = static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData())->GetBitmap();
1808     CGRect r = CGRectMake( x , y , w , h );
1809     // if ( bmp.GetDepth() == 1 )
1810     {
1811         // is is a mask, the '1' in the mask tell where to draw the current brush
1812         if (  !m_brush.IsNull() )
1813         {
1814             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
1815             {
1816                 // TODO clip to mask
1817             /*
1818                 CGContextSaveGState( m_cgContext );
1819                 CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
1820                 CGContextClip( m_cgContext );
1821                 CGContextDrawShading( m_cgContext, ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->GetShading() );
1822                 CGContextRestoreGState( m_cgContext);
1823             */
1824             }
1825             else
1826             {
1827                 ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
1828                 wxMacDrawCGImage( m_cgContext , &r , image );
1829             }
1830         }
1831     }
1832     /*
1833     else
1834     {
1835         wxMacDrawCGImage( m_cgContext , &r , image );
1836     }
1837     CGImageRelease( image );
1838     */
1839 #endif
1840 }
1841
1842 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1843 {
1844     EnsureIsValid();
1845
1846     CGRect r = CGRectMake( 00 , 00 , w , h );
1847     CGContextSaveGState( m_cgContext );
1848     CGContextTranslateCTM( m_cgContext, x , y + h );
1849     CGContextScaleCTM( m_cgContext, 1, -1 );
1850 #ifdef __WXMAC__
1851     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
1852         NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
1853 #endif
1854     CGContextRestoreGState( m_cgContext );
1855 }
1856
1857 void wxMacCoreGraphicsContext::PushState()
1858 {
1859     EnsureIsValid();
1860
1861     CGContextSaveGState( m_cgContext );
1862 }
1863
1864 void wxMacCoreGraphicsContext::PopState()
1865 {
1866     EnsureIsValid();
1867
1868     CGContextRestoreGState( m_cgContext );
1869 }
1870
1871 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
1872 {
1873     if ( m_font.IsNull() )
1874         return;
1875
1876     EnsureIsValid();
1877 #if wxMAC_USE_CORE_TEXT
1878     if ( UMAGetSystemVersion() >= 0x1050 )
1879     {
1880         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
1881         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
1882         CTFontRef font = fref->GetCTFont();
1883         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
1884         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
1885         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
1886          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
1887         CFTypeRef values[] = { font, col, underlined };
1888         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
1889                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
1890         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
1891         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
1892
1893         y += CTFontGetAscent(font);
1894
1895         CGContextSaveGState(m_cgContext);
1896         CGContextTranslateCTM(m_cgContext, x, y);
1897         CGContextScaleCTM(m_cgContext, 1, -1);
1898         CGContextSetTextPosition(m_cgContext, 0, 0);
1899         CTLineDraw( line, m_cgContext );
1900         CGContextRestoreGState(m_cgContext);
1901         CFRelease( col );
1902         return;
1903     }
1904 #endif
1905 #if wxMAC_USE_ATSU_TEXT
1906     {
1907         DrawText(str, x, y, 0.0);
1908         return;
1909     }
1910 #endif
1911 #if wxMAC_USE_CG_TEXT
1912     // TODO core graphics text implementation here
1913 #endif
1914 }
1915
1916 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
1917 {
1918     if ( m_font.IsNull() )
1919         return;
1920
1921     EnsureIsValid();
1922 #if wxMAC_USE_CORE_TEXT
1923     if ( UMAGetSystemVersion() >= 0x1050 )
1924     {
1925         // default implementation takes care of rotation and calls non rotated DrawText afterwards
1926         wxGraphicsContext::DrawText( str, x, y, angle );
1927         return;
1928     }
1929 #endif
1930 #if wxMAC_USE_ATSU_TEXT
1931     {
1932         OSStatus status = noErr;
1933         ATSUTextLayout atsuLayout;
1934         wxMacUniCharBuffer unibuf( str );
1935         UniCharCount chars = unibuf.GetChars();
1936
1937         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
1938         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
1939                                                    &chars , &style , &atsuLayout );
1940
1941         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
1942
1943         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
1944         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
1945
1946         int iAngle = int( angle * RAD2DEG );
1947         if ( abs(iAngle) > 0 )
1948         {
1949             Fixed atsuAngle = IntToFixed( iAngle );
1950             ATSUAttributeTag atsuTags[] =
1951             {
1952                 kATSULineRotationTag ,
1953             };
1954             ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1955             {
1956                 sizeof( Fixed ) ,
1957             };
1958             ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1959             {
1960                 &atsuAngle ,
1961             };
1962             status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1963                                              atsuTags, atsuSizes, atsuValues );
1964         }
1965
1966         {
1967             ATSUAttributeTag atsuTags[] =
1968             {
1969                 kATSUCGContextTag ,
1970             };
1971             ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1972             {
1973                 sizeof( CGContextRef ) ,
1974             };
1975             ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
1976             {
1977                 &m_cgContext ,
1978             };
1979             status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
1980                                              atsuTags, atsuSizes, atsuValues );
1981         }
1982
1983         ATSUTextMeasurement textBefore, textAfter;
1984         ATSUTextMeasurement ascent, descent;
1985
1986         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1987                                             &textBefore , &textAfter, &ascent , &descent );
1988
1989         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1990
1991         Rect rect;
1992         x += (int)(sin(angle) * FixedToInt(ascent));
1993         y += (int)(cos(angle) * FixedToInt(ascent));
1994
1995         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
1996                                         IntToFixed(x) , IntToFixed(y) , &rect );
1997         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
1998
1999         CGContextSaveGState(m_cgContext);
2000         CGContextTranslateCTM(m_cgContext, x, y);
2001         CGContextScaleCTM(m_cgContext, 1, -1);
2002         status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2003                                 IntToFixed(0) , IntToFixed(0) );
2004
2005         wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
2006
2007         CGContextRestoreGState(m_cgContext);
2008
2009         ::ATSUDisposeTextLayout(atsuLayout);
2010
2011         return;
2012     }
2013 #endif
2014 #if wxMAC_USE_CG_TEXT
2015     // default implementation takes care of rotation and calls non rotated DrawText afterwards
2016     wxGraphicsContext::DrawText( str, x, y, angle );
2017 #endif
2018 }
2019
2020 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
2021                             wxDouble *descent, wxDouble *externalLeading ) const
2022 {
2023     wxCHECK_RET( !m_font.IsNull(), wxT("wxDC(cg)::DoGetTextExtent - no valid font set") );
2024
2025     if ( width )
2026         *width = 0;
2027     if ( height )
2028         *height = 0;
2029     if ( descent )
2030         *descent = 0;
2031     if ( externalLeading )
2032         *externalLeading = 0;
2033
2034     if (str.empty())
2035         return;
2036
2037 #if wxMAC_USE_CORE_TEXT
2038     if ( UMAGetSystemVersion() >= 0x1050 )
2039     {
2040         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2041         CTFontRef font = fref->GetCTFont();
2042
2043         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
2044         CFStringRef keys[] = { kCTFontAttributeName  };
2045         CFTypeRef values[] = { font };
2046         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2047                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2048         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
2049         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2050
2051         CGFloat w, a, d, l;
2052
2053         w = CTLineGetTypographicBounds(line, &a, &d, &l) ;
2054
2055         if ( height )
2056             *height = a+d+l;
2057         if ( descent )
2058             *descent = d;
2059         if ( externalLeading )
2060             *externalLeading = l;
2061         if ( width )
2062             *width = w;
2063         return;
2064     }
2065 #endif
2066 #if wxMAC_USE_ATSU_TEXT
2067     {
2068         OSStatus status = noErr;
2069
2070         ATSUTextLayout atsuLayout;
2071         wxMacUniCharBuffer unibuf( str );
2072         UniCharCount chars = unibuf.GetChars();
2073
2074         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2075         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2076                                                    &chars , &style , &atsuLayout );
2077
2078         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2079
2080         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2081         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2082
2083         ATSUTextMeasurement textBefore, textAfter;
2084         ATSUTextMeasurement textAscent, textDescent;
2085
2086         status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
2087                                             &textBefore , &textAfter, &textAscent , &textDescent );
2088
2089         if ( height )
2090             *height = FixedToInt(textAscent + textDescent);
2091         if ( descent )
2092             *descent = FixedToInt(textDescent);
2093         if ( externalLeading )
2094             *externalLeading = 0;
2095         if ( width )
2096             *width = FixedToInt(textAfter - textBefore);
2097
2098         ::ATSUDisposeTextLayout(atsuLayout);
2099
2100         return;
2101     }
2102 #endif
2103 #if wxMAC_USE_CG_TEXT
2104     // TODO core graphics text implementation here
2105 #endif
2106 }
2107
2108 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
2109 {
2110     widths.Empty();
2111     widths.Add(0, text.length());
2112
2113     if (text.empty())
2114         return;
2115
2116 #if wxMAC_USE_CORE_TEXT
2117     {
2118         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
2119         CTFontRef font = fref->GetCTFont();
2120
2121         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
2122         CFStringRef keys[] = { kCTFontAttributeName  };
2123         CFTypeRef values[] = { font };
2124         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
2125                                                                 WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
2126         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, t, attributes) );
2127         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
2128
2129         int chars = text.length();
2130         for ( int pos = 0; pos < (int)chars; pos ++ )
2131         {
2132             widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL )+0.5;
2133         }
2134
2135         return;
2136     }
2137 #endif
2138 #if wxMAC_USE_ATSU_TEXT
2139     {
2140         OSStatus status = noErr;
2141         ATSUTextLayout atsuLayout;
2142         wxMacUniCharBuffer unibuf( text );
2143         UniCharCount chars = unibuf.GetChars();
2144
2145         ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
2146         status = ::ATSUCreateTextLayoutWithTextPtr( unibuf.GetBuffer() , 0 , chars , chars , 1 ,
2147                                           &chars , &style , &atsuLayout );
2148
2149         wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
2150
2151         status = ::ATSUSetTransientFontMatching( atsuLayout , true );
2152         wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
2153
2154         for ( int pos = 0; pos < (int)chars; pos ++ )
2155         {
2156             unsigned long actualNumberOfBounds = 0;
2157             ATSTrapezoid glyphBounds;
2158
2159             // We get a single bound, since the text should only require one. If it requires more, there is an issue
2160             OSStatus result;
2161             result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
2162                                         kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
2163             if (result != noErr || actualNumberOfBounds != 1 )
2164                 return;
2165
2166             widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
2167             //unsigned char uch = s[i];
2168         }
2169
2170         ::ATSUDisposeTextLayout(atsuLayout);
2171     }
2172 #endif
2173 #if wxMAC_USE_CG_TEXT
2174     // TODO core graphics text implementation here
2175 #endif
2176 }
2177
2178 void * wxMacCoreGraphicsContext::GetNativeContext()
2179 {
2180     return m_cgContext;
2181 }
2182
2183 // concatenates this transform with the current transform of this context
2184 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
2185 {
2186     if ( m_cgContext )
2187         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2188     else
2189         m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
2190 }
2191
2192 // sets the transform of this context
2193 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
2194 {
2195     if ( m_cgContext )
2196     {
2197         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
2198         transform = CGAffineTransformInvert( transform ) ;
2199         CGContextConcatCTM( m_cgContext, transform);
2200         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
2201     }
2202     else
2203     {
2204         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
2205     }
2206 }
2207
2208 // gets the matrix of this context
2209 wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
2210 {
2211     wxGraphicsMatrix m = CreateMatrix();
2212     *((CGAffineTransform*) m.GetNativeMatrix()) = ( m_cgContext == NULL ? m_windowTransform :
2213         CGContextGetCTM( m_cgContext ));
2214     return m;
2215 }
2216
2217 //
2218 // Renderer
2219 //
2220
2221 //-----------------------------------------------------------------------------
2222 // wxMacCoreGraphicsRenderer declaration
2223 //-----------------------------------------------------------------------------
2224
2225 class WXDLLIMPEXP_CORE wxMacCoreGraphicsRenderer : public wxGraphicsRenderer
2226 {
2227 public :
2228     wxMacCoreGraphicsRenderer() {}
2229
2230     virtual ~wxMacCoreGraphicsRenderer() {}
2231
2232     // Context
2233
2234     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
2235     virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
2236
2237     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
2238
2239     virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
2240
2241     virtual wxGraphicsContext * CreateContext( wxWindow* window );
2242
2243     virtual wxGraphicsContext * CreateMeasuringContext();
2244
2245     // Path
2246
2247     virtual wxGraphicsPath CreatePath();
2248
2249     // Matrix
2250
2251     virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
2252         wxDouble tx=0.0, wxDouble ty=0.0);
2253
2254
2255     virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
2256
2257     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
2258
2259     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2260     virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2261         const wxColour&c1, const wxColour&c2) ;
2262
2263     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2264     // with radius r and color cColor
2265     virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2266         const wxColour &oColor, const wxColour &cColor) ;
2267
2268    // sets the font
2269     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
2270
2271     // create a native bitmap representation
2272     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
2273
2274     // create a native bitmap representation
2275     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) ;
2276 private :
2277     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
2278 } ;
2279
2280 //-----------------------------------------------------------------------------
2281 // wxMacCoreGraphicsRenderer implementation
2282 //-----------------------------------------------------------------------------
2283
2284 IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsRenderer,wxGraphicsRenderer)
2285
2286 static wxMacCoreGraphicsRenderer gs_MacCoreGraphicsRenderer;
2287
2288 wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
2289 {
2290     return &gs_MacCoreGraphicsRenderer;
2291 }
2292
2293 #ifdef __WXCOCOA__
2294 extern CGContextRef wxMacGetContextFromCurrentNSContext() ;
2295 #endif
2296
2297 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc )
2298 {
2299     const wxDCImpl* impl = dc.GetImpl();
2300     wxWindowDCImpl *win_impl = wxDynamicCast( impl, wxWindowDCImpl );
2301     if (win_impl)
2302     {
2303         int w, h;
2304         win_impl->GetSize( &w, &h );
2305         CGContextRef cgctx = 0;
2306 #ifdef __WXMAC__
2307         cgctx =  (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef());
2308 #else
2309         cgctx = wxMacGetContextFromCurrentNSContext() ;
2310 #endif
2311         return new wxMacCoreGraphicsContext( this, cgctx, (wxDouble) w, (wxDouble) h );
2312     }
2313     return NULL;
2314 }
2315
2316 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC& dc )
2317 {
2318 #ifdef __WXMAC__
2319     const wxDCImpl* impl = dc.GetImpl();
2320     wxMemoryDCImpl *mem_impl = wxDynamicCast( impl, wxMemoryDCImpl );
2321     if (mem_impl)
2322     {
2323         int w, h;
2324         mem_impl->GetSize( &w, &h );
2325         return new wxMacCoreGraphicsContext( this,
2326             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
2327     }
2328 #endif
2329     return NULL;
2330 }
2331
2332 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
2333 {
2334     return new wxMacCoreGraphicsContext(this,(CGContextRef)context);
2335 }
2336
2337
2338 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
2339 {
2340     return new wxMacCoreGraphicsContext(this,(WindowRef)window);
2341 }
2342
2343 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( wxWindow* window )
2344 {
2345     return new wxMacCoreGraphicsContext(this, window );
2346 }
2347
2348 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
2349 {
2350     return new wxMacCoreGraphicsContext(this);
2351 }
2352
2353 // Path
2354
2355 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
2356 {
2357     wxGraphicsPath m;
2358     m.SetRefData( new wxMacCoreGraphicsPathData(this));
2359     return m;
2360 }
2361
2362
2363 // Matrix
2364
2365 wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2366     wxDouble tx, wxDouble ty)
2367 {
2368     wxGraphicsMatrix m;
2369     wxMacCoreGraphicsMatrixData* data = new wxMacCoreGraphicsMatrixData( this );
2370     data->Set( a,b,c,d,tx,ty ) ;
2371     m.SetRefData(data);
2372     return m;
2373 }
2374
2375 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
2376 {
2377     if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
2378         return wxNullGraphicsPen;
2379     else
2380     {
2381         wxGraphicsPen p;
2382         p.SetRefData(new wxMacCoreGraphicsPenData( this, pen ));
2383         return p;
2384     }
2385 }
2386
2387 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
2388 {
2389     if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
2390         return wxNullGraphicsBrush;
2391     else
2392     {
2393         wxGraphicsBrush p;
2394         p.SetRefData(new wxMacCoreGraphicsBrushData( this, brush ));
2395         return p;
2396     }
2397 }
2398
2399 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
2400 {
2401     if ( bmp.Ok() )
2402     {
2403         wxGraphicsBitmap p;
2404 #ifdef __WXMAC__
2405         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage() ) );
2406 #endif
2407         return p;
2408     }
2409     else
2410         return wxNullGraphicsBitmap;
2411 }
2412
2413 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h  )
2414 {
2415     CGImageRef img = static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData())->GetBitmap();
2416     if ( img )
2417     {
2418         wxGraphicsBitmap p;
2419         CGImageRef subimg = CGImageCreateWithImageInRect(img,CGRectMake( x , y , w , h ));
2420         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , subimg ) );
2421         return p;
2422     }
2423     else
2424         return wxNullGraphicsBitmap;
2425 }
2426
2427 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
2428 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
2429     const wxColour&c1, const wxColour&c2)
2430 {
2431     wxGraphicsBrush p;
2432     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2433     d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
2434     p.SetRefData(d);
2435     return p;
2436 }
2437
2438 // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
2439 // with radius r and color cColor
2440 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
2441     const wxColour &oColor, const wxColour &cColor)
2442 {
2443     wxGraphicsBrush p;
2444     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
2445     d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
2446     p.SetRefData(d);
2447     return p;
2448 }
2449
2450 // sets the font
2451 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
2452 {
2453     if ( font.Ok() )
2454     {
2455         wxGraphicsFont p;
2456         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
2457         return p;
2458     }
2459     else
2460         return wxNullGraphicsFont;
2461 }
2462
2463 //
2464 // CoreGraphics Helper Methods
2465 //
2466
2467 // Data Providers and Consumers
2468
2469 size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
2470 {
2471     CFMutableDataRef data = (CFMutableDataRef) info;
2472     if ( data )
2473     {
2474         CFDataAppendBytes( data, (const UInt8*) bytes, count );
2475     }
2476     return count;
2477 }
2478
2479 void wxMacReleaseCFDataProviderCallback(void *info,
2480                                       const void *WXUNUSED(data),
2481                                       size_t WXUNUSED(count))
2482 {
2483     if ( info )
2484         CFRelease( (CFDataRef) info );
2485 }
2486
2487 void wxMacReleaseCFDataConsumerCallback( void *info )
2488 {
2489     if ( info )
2490         CFRelease( (CFDataRef) info );
2491 }
2492
2493 CGDataProviderRef wxMacCGDataProviderCreateWithCFData( CFDataRef data )
2494 {
2495     if ( data == NULL )
2496         return NULL;
2497
2498     return CGDataProviderCreateWithCFData( data );
2499 }
2500
2501 CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data )
2502 {
2503     if ( data == NULL )
2504         return NULL;
2505
2506     return CGDataConsumerCreateWithCFData( data );
2507 }
2508
2509 void
2510 wxMacReleaseMemoryBufferProviderCallback(void *info,
2511                                          const void * WXUNUSED_UNLESS_DEBUG(data),
2512                                          size_t WXUNUSED(size))
2513 {
2514     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
2515
2516     wxASSERT( data == membuf->GetData() ) ;
2517
2518     delete membuf ;
2519 }
2520
2521 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf )
2522 {
2523     wxMemoryBuffer* b = new wxMemoryBuffer( buf );
2524     if ( b->GetDataLen() == 0 )
2525         return NULL;
2526
2527     return CGDataProviderCreateWithData( b , (const void *) b->GetData() , b->GetDataLen() ,
2528                                                  wxMacReleaseMemoryBufferProviderCallback );
2529 }