src/cocoa/cursor.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/cursor.mm
   3 // Purpose:     wxCursor class for wxCocoa
   4 // Author:      Ryan Norton
   5 //              David Elliott
   6 // Modified by:
   7 // Created:     2004-10-05
   8 // Copyright:   (c) Ryan Norton
   9 //              2007, Software 2000 Ltd.
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #include "wx/wxprec.h"
  14
  15 #include "wx/cursor.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/icon.h"
  19     #include "wx/log.h"
  20 #endif //WX_PRECOMP
  21
  22 #import <AppKit/NSCursor.h>
  23 #import <AppKit/NSImage.h>
  24 #include "wx/cocoa/string.h"
  25 #include "wx/cocoa/autorelease.h"
  26
  27 IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxBitmap)
  28
  29 typedef struct tagClassicCursor
  30 {
  31     wxUint16 bits[16];
  32     wxUint16 mask[16];
  33     wxInt16 hotspot[2];
  34 }ClassicCursor;
  35
  36 ///////////////////////////////////////////////////////////////////////////
  37 // This is a direct copy from src/osx/carbon/cursor.cpp and should be
  38 // changed to use common code if we plan on keeping it this way.
  39 // Note that this is basically an array of classic 'CURS' resources.
  40
  41 const short kwxCursorBullseye = 0 ;
  42 const short kwxCursorBlank = 1 ;
  43 const short kwxCursorPencil = 2 ;
  44 const short kwxCursorMagnifier = 3 ;
  45 const short kwxCursorNoEntry = 4 ;
  46 const short kwxCursorPaintBrush = 5 ;
  47 const short kwxCursorPointRight = 6 ;
  48 const short kwxCursorPointLeft = 7 ;
  49 const short kwxCursorQuestionArrow = 8 ;
  50 const short kwxCursorRightArrow = 9 ;
  51 const short kwxCursorSizeNS = 10 ;
  52 const short kwxCursorSize = 11 ;
  53 const short kwxCursorSizeNESW = 12 ;
  54 const short kwxCursorSizeNWSE = 13 ;
  55 const short kwxCursorRoller = 14 ;
  56 const short kwxCursorLast = kwxCursorRoller ;
  57
  58 ClassicCursor gMacCursors[kwxCursorLast+1] =
  59 {
  60
  61 {
  62 {0x0000, 0x03E0, 0x0630, 0x0808, 0x1004, 0x31C6, 0x2362, 0x2222,
  63 0x2362, 0x31C6, 0x1004, 0x0808, 0x0630, 0x03E0, 0x0000, 0x0000},
  64 {0x0000, 0x03E0, 0x07F0, 0x0FF8, 0x1FFC, 0x3FFE, 0x3FFE, 0x3FFE,
  65 0x3FFE, 0x3FFE, 0x1FFC, 0x0FF8, 0x07F0, 0x03E0, 0x0000, 0x0000},
  66 {0x0007, 0x0008}
  67 },
  68
  69 {
  70 {0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
  71 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000},
  72 {0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
  73 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000},
  74 {0x0000, 0x0000}
  75 },
  76
  77 {
  78 {0x00F0, 0x0088, 0x0108, 0x0190, 0x0270, 0x0220, 0x0440, 0x0440,
  79 0x0880, 0x0880, 0x1100, 0x1E00, 0x1C00, 0x1800, 0x1000, 0x0000},
  80 {0x00F0, 0x00F8, 0x01F8, 0x01F0, 0x03F0, 0x03E0, 0x07C0, 0x07C0,
  81 0x0F80, 0x0F80, 0x1F00, 0x1E00, 0x1C00, 0x1800, 0x1000, 0x0000},
  82 {0x000E, 0x0003}
  83 },
  84
  85 {
  86 {0x0000, 0x1E00, 0x2100, 0x4080, 0x4080, 0x4080, 0x4080, 0x2180,
  87 0x1FC0, 0x00E0, 0x0070, 0x0038, 0x001C, 0x000E, 0x0006, 0x0000},
  88 {0x3F00, 0x7F80, 0xFFC0, 0xFFC0, 0xFFC0, 0xFFC0, 0xFFC0, 0x7FC0,
  89 0x3FE0, 0x1FF0, 0x00F8, 0x007C, 0x003E, 0x001F, 0x000F, 0x0007},
  90 {0x0004, 0x0004}
  91 },
  92
  93 {
  94 {0x0000, 0x07E0, 0x1FF0, 0x3838, 0x3C0C, 0x6E0E, 0x6706, 0x6386,
  95 0x61C6, 0x60E6, 0x7076, 0x303C, 0x1C1C, 0x0FF8, 0x07E0, 0x0000},
  96 {0x0540, 0x0FF0, 0x3FF8, 0x3C3C, 0x7E0E, 0xFF0F, 0x6F86, 0xE7C7,
  97 0x63E6, 0xE1F7, 0x70FE, 0x707E, 0x3C3C, 0x1FFC, 0x0FF0, 0x0540},
  98 {0x0007, 0x0007}
  99 },
 100
 101 {
 102 {0x0000, 0x0380, 0x0380, 0x0380, 0x0380, 0x0380, 0x0380, 0x0FE0,
 103 0x1FF0, 0x1FF0, 0x0000, 0x1FF0, 0x1FF0, 0x1550, 0x1550, 0x1550},
 104 {0x07C0, 0x07C0, 0x07C0, 0x07C0, 0x07C0, 0x07C0, 0x0FE0, 0x1FF0,
 105 0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8},
 106 {0x000B, 0x0007}
 107 },
 108
 109 {
 110 {0x00C0, 0x0140, 0x0640, 0x08C0, 0x3180, 0x47FE, 0x8001, 0x8001,
 111 0x81FE, 0x8040, 0x01C0, 0x0040, 0x03C0, 0xC080, 0x3F80, 0x0000},
 112 {0x00C0, 0x01C0, 0x07C0, 0x0FC0, 0x3F80, 0x7FFE, 0xFFFF, 0xFFFF,
 113 0xFFFE, 0xFFC0, 0xFFC0, 0xFFC0, 0xFFC0, 0xFF80, 0x3F80, 0x0000},
 114 {0x0006, 0x000F}
 115 },
 116
 117 {
 118 {0x0100, 0x0280, 0x0260, 0x0310, 0x018C, 0x7FE3, 0x8000, 0x8000,
 119 0x7F80, 0x0200, 0x0380, 0x0200, 0x03C0, 0x0107, 0x01F8, 0x0000},
 120 {0x0100, 0x0380, 0x03E0, 0x03F0, 0x01FC, 0x7FFF, 0xFFFF, 0xFFFF,
 121 0xFFFF, 0x03FF, 0x03FF, 0x03FF, 0x03FF, 0x01FF, 0x01F8, 0x0000},
 122 {0x0006, 0x0000}
 123 },
 124
 125 {
 126 {0x0000, 0x4078, 0x60FC, 0x71CE, 0x7986, 0x7C06, 0x7E0E, 0x7F1C,
 127 0x7FB8, 0x7C30, 0x6C30, 0x4600, 0x0630, 0x0330, 0x0300, 0x0000},
 128 {0xC078, 0xE0FC, 0xF1FE, 0xFBFF, 0xFFCF, 0xFF8F, 0xFF1F, 0xFFBE,
 129 0xFFFC, 0xFE78, 0xFF78, 0xEFF8, 0xCFF8, 0x87F8, 0x07F8, 0x0300},
 130 {0x0001, 0x0001}
 131 },
 132
 133 {
 134 {0x0000, 0x0002, 0x0006, 0x000E, 0x001E, 0x003E, 0x007E, 0x00FE,
 135 0x01FE, 0x003E, 0x0036, 0x0062, 0x0060, 0x00C0, 0x00C0, 0x0000},
 136 {0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF,
 137 0x03FF, 0x07FF, 0x007F, 0x00F7, 0x00F3, 0x01E1, 0x01E0, 0x01C0},
 138 {0x0001, 0x000E}
 139 },
 140
 141 {
 142 {0x0000, 0x0080, 0x01C0, 0x03E0, 0x0080, 0x0080, 0x0080, 0x1FFC,
 143 0x1FFC, 0x0080, 0x0080, 0x0080, 0x03E0, 0x01C0, 0x0080, 0x0000},
 144 {0x0080, 0x01C0, 0x03E0, 0x07F0, 0x0FF8, 0x01C0, 0x3FFE, 0x3FFE,
 145 0x3FFE, 0x3FFE, 0x01C0, 0x0FF8, 0x07F0, 0x03E0, 0x01C0, 0x0080},
 146 {0x0007, 0x0008}
 147 },
 148
 149 {
 150 {0x0000, 0x0080, 0x01C0, 0x03E0, 0x0080, 0x0888, 0x188C, 0x3FFE,
 151 0x188C, 0x0888, 0x0080, 0x03E0, 0x01C0, 0x0080, 0x0000, 0x0000},
 152 {0x0080, 0x01C0, 0x03E0, 0x07F0, 0x0BE8, 0x1DDC, 0x3FFE, 0x7FFF,
 153 0x3FFE, 0x1DDC, 0x0BE8, 0x07F0, 0x03E0, 0x01C0, 0x0080, 0x0000},
 154 {0x0007, 0x0008}
 155 },
 156
 157 {
 158 {0x0000, 0x001E, 0x000E, 0x060E, 0x0712, 0x03A0, 0x01C0, 0x00E0,
 159 0x0170, 0x1238, 0x1C18, 0x1C00, 0x1E00, 0x0000, 0x0000, 0x0000},
 160 {0x007F, 0x003F, 0x0E1F, 0x0F0F, 0x0F97, 0x07E3, 0x03E1, 0x21F0,
 161 0x31F8, 0x3A7C, 0x3C3C, 0x3E1C, 0x3F00, 0x3F80, 0x0000, 0x0000},
 162 {0x0006, 0x0009}
 163 },
 164
 165 {
 166 {0x0000, 0x7800, 0x7000, 0x7060, 0x48E0, 0x05C0, 0x0380, 0x0700,
 167 0x0E80, 0x1C48, 0x1838, 0x0038, 0x0078, 0x0000, 0x0000, 0x0000},
 168 {0xFE00, 0xFC00, 0xF870, 0xF0F0, 0xE9F0, 0xC7E0, 0x87C0, 0x0F84,
 169 0x1F8C, 0x3E5C, 0x3C3C, 0x387C, 0x00FC, 0x01FC, 0x0000, 0x0000},
 170 {0x0006, 0x0006}
 171 },
 172
 173 {
 174 {0x0006, 0x000E, 0x001C, 0x0018, 0x0020, 0x0040, 0x00F8, 0x0004,
 175 0x1FF4, 0x200C, 0x2AA8, 0x1FF0, 0x1F80, 0x3800, 0x6000, 0x8000},
 176 {0x000F, 0x001F, 0x003E, 0x007C, 0x0070, 0x00E0, 0x01FC, 0x3FF6,
 177 0x7FF6, 0x7FFE, 0x7FFC, 0x7FF8, 0x3FF0, 0x7FC0, 0xF800, 0xE000},
 178 {0x000A, 0x0006}
 179 },
 180
 181 } ;
 182
 183 // End of data copied from src/osx/carbon/cursor.cpp
 184 ///////////////////////////////////////////////////////////////////////////
 185
 186 /* NSCursorCreateWithPrivateId
 187  * Returns a newly allocated (i.e. retainCount == 1) NSCursor based on the
 188  * classic Mac OS cursor data in this source file.  This allows us to
 189  * implement the "stock" wxWidgets cursors which aren't present in Cocoa.
 190  */
 191 static inline NSCursor* NSCursorCreateWithPrivateId(short sIndex)
 192 {
 193     ClassicCursor* pCursor = &gMacCursors[sIndex];
 194
 195     //Classic mac cursors are 1bps 16x16 black and white with a
 196     //identical mask that is 1 for on and 0 for off
 197     NSImage *theImage = [[NSImage alloc] initWithSize:NSMakeSize(16.0,16.0)];
 198
 199     NSBitmapImageRep *theRep = [[NSBitmapImageRep alloc]
 200         initWithBitmapDataPlanes: NULL  // Tell Cocoa to allocate the planes for us.
 201         pixelsWide: 16      // All classic cursors are 16x16
 202         pixelsHigh: 16
 203         bitsPerSample: 1    // All classic cursors are bitmaps with bitmasks
 204         samplesPerPixel: 2  // Sample 0:image 1:mask
 205         hasAlpha: YES       // Identify last sample as a mask
 206         isPlanar: YES       // Use a separate array for each sample
 207         colorSpaceName: NSCalibratedWhiteColorSpace // 0.0=black 1.0=white
 208         bytesPerRow: 2      // Rows in each plane are on 2-byte boundaries (no pad)
 209         bitsPerPixel: 1];   // same as bitsPerSample since data is planar
 210     // XXX: Should we use NSDeviceWhiteColorSpace? Does it matter?
 211
 212     // Ensure that Cocoa allocated 2 and only 2 of the 5 possible planes
 213     unsigned char *planes[5];
 214     [theRep getBitmapDataPlanes:planes];
 215     wxASSERT(planes[0] != NULL);
 216     wxASSERT(planes[1] != NULL);
 217     wxASSERT(planes[2] == NULL);
 218     wxASSERT(planes[3] == NULL);
 219     wxASSERT(planes[4] == NULL);
 220
 221     // NOTE1: The Cursor's bits field is white=0 black=1.. thus the bitwise-not
 222     // Why not use NSCalibratedBlackColorSpace?  Because that reverses the
 223     // sense of the alpha (mask) plane.
 224     // NOTE2: The mask data is 0=off 1=on
 225     // NOTE3: Cocoa asks for "premultiplied" color planes.  Since we have a
 226     // 1-bit color plane and a 1-bit alpha plane we can just do a bitwise-and
 227     // on the two.  The original cursor bitmaps have 0 (white actually) for
 228     // any masked-off pixels.  Therefore every masked-off pixel would be wrong
 229     // since we bit-flip all of the picture bits.  In practice, Cocoa doesn't
 230     // seem to care, but we are following the documentation.
 231
 232     // Fill in the color (black/white) plane
 233     for(int i=0; i<16; ++i)
 234     {
 235         planes[0][2*i  ] = (~pCursor->bits[i] & pCursor->mask[i]) >> 8 & 0xff;
 236         planes[0][2*i+1] = (~pCursor->bits[i] & pCursor->mask[i]) & 0xff;
 237     }
 238     // Fill in the alpha (i.e. mask) plane
 239     for(int i=0; i<16; ++i)
 240     {
 241         planes[1][2*i  ] = pCursor->mask[i] >> 8 & 0xff;
 242         planes[1][2*i+1] = pCursor->mask[i] & 0xff;
 243     }
 244
 245     //add the representation (data) to the image
 246     [theImage addRepresentation:theRep];
 247
 248     //create the new cursor
 249     NSCursor* theCursor =  [[NSCursor alloc]  initWithImage:theImage
 250                                     hotSpot:NSMakePoint(pCursor->hotspot[1], pCursor->hotspot[0])
 251                             ];
 252
 253     //do the usual cleanups
 254     [theRep release];
 255     [theImage release];
 256
 257     //return the new cursor
 258     return theCursor;
 259 }
 260
 261 wxCursorRefData::wxCursorRefData() :
 262     m_width(32), m_height(32), m_hCursor(nil)
 263 {
 264 }
 265
 266 wxCursorRefData::~wxCursorRefData()
 267 {
 268     if (m_hCursor)
 269         [m_hCursor release];
 270 }
 271
 272 // Cursors
 273 wxCursor::wxCursor()
 274 {
 275 }
 276
 277 wxCursor::wxCursor(const char WXUNUSED(bits)[], int WXUNUSED(width), int WXUNUSED(height),
 278     int WXUNUSED(hotSpotX), int WXUNUSED(hotSpotY), const char WXUNUSED(maskBits)[])
 279 {
 280 }
 281
 282 wxCursor::wxCursor(const wxString& cursor_file, long flags, int hotSpotX, int hotSpotY)
 283 {
 284     m_refData = new wxCursorRefData;
 285
 286     //TODO:  Not sure if this works or not
 287     NSImage* theImage;
 288
 289     if (flags & wxBITMAP_TYPE_MACCURSOR_RESOURCE)
 290     {
 291         //[NSBundle bundleForClass:[self class]]?
 292         theImage = [[NSImage alloc]
 293                         initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:wxNSStringWithWxString(cursor_file) ofType:nil]
 294                     ];
 295
 296     }
 297     else
 298         theImage = [[NSImage alloc] initByReferencingFile:wxNSStringWithWxString(cursor_file)
 299                 ];
 300
 301     wxASSERT(theImage);
 302
 303     M_CURSORDATA->m_hCursor = [[NSCursor alloc] initWithImage:theImage
 304                                         hotSpot:NSMakePoint(hotSpotX, hotSpotY)
 305                                 ];
 306
 307     [theImage release];
 308 }
 309
 310 // Returns a system cursor given the NSCursor class method selector or
 311 // nil if NSCursor does not respond to the message.
 312 // For example, OS X before 10.3 won't respond to pointingHandCursor.
 313 static inline NSCursor* GetSystemCursorWithSelector(SEL cursorSelector)
 314 {
 315     if([NSCursor respondsToSelector: cursorSelector])
 316         return [NSCursor performSelector: cursorSelector];
 317     else
 318         return nil;
 319 }
 320
 321 // Please maintain order as if this were an array keyed on wxStockCursor
 322 static inline SEL GetCursorSelectorForStockCursor(int stock_cursor_id)
 323 {
 324     switch(stock_cursor_id)
 325     {
 326     case wxCURSOR_ARROW:            return @selector(arrowCursor);
 327     case wxCURSOR_RIGHT_ARROW:      break;
 328     case wxCURSOR_BULLSEYE:         break;
 329     case wxCURSOR_CHAR:             break;
 330     case wxCURSOR_CROSS:            return @selector(crosshairCursor);
 331     case wxCURSOR_HAND:             return @selector(pointingHandCursor);
 332     case wxCURSOR_IBEAM:            return @selector(IBeamCursor);
 333     case wxCURSOR_LEFT_BUTTON:      break;
 334     case wxCURSOR_MAGNIFIER:        break;
 335     case wxCURSOR_MIDDLE_BUTTON:    break;
 336     case wxCURSOR_NO_ENTRY:         break;
 337     case wxCURSOR_PAINT_BRUSH:      break;
 338     case wxCURSOR_PENCIL:           break;
 339     case wxCURSOR_POINT_LEFT:       break;
 340     case wxCURSOR_POINT_RIGHT:      break;
 341     case wxCURSOR_QUESTION_ARROW:   break;
 342     case wxCURSOR_RIGHT_BUTTON:     break;
 343     case wxCURSOR_SIZENESW:         break;
 344     case wxCURSOR_SIZENS:           return @selector(resizeUpDownCursor);
 345     case wxCURSOR_SIZENWSE:         break;
 346     case wxCURSOR_SIZEWE:           return @selector(resizeLeftRightCursor);
 347     case wxCURSOR_SIZING:           break;
 348     case wxCURSOR_SPRAYCAN:         break;
 349     case wxCURSOR_WAIT:             break;
 350     case wxCURSOR_WATCH:            break;
 351     case wxCURSOR_BLANK:            break;
 352     case wxCURSOR_ARROWWAIT:        break;
 353     default:                        break;
 354     }
 355     return NULL;
 356 }
 357
 358 // Please maintain order as if this were an array keyed on wxStockCursor
 359 static inline int GetPrivateCursorIdForStockCursor(int stock_cursor_id)
 360 {
 361     switch(stock_cursor_id)
 362     {
 363     case wxCURSOR_ARROW:            break;  // NSCursor
 364     case wxCURSOR_RIGHT_ARROW:      return kwxCursorRightArrow;
 365     case wxCURSOR_BULLSEYE:         return kwxCursorBullseye;
 366     case wxCURSOR_CHAR:             break;
 367     case wxCURSOR_CROSS:            break;  // NSCursor
 368     case wxCURSOR_HAND:             break;  // NSCursor (OS X >= 10.3)
 369     case wxCURSOR_IBEAM:            break;  // NSCursor
 370     case wxCURSOR_LEFT_BUTTON:      break;
 371     case wxCURSOR_MAGNIFIER:        return kwxCursorMagnifier;
 372     case wxCURSOR_MIDDLE_BUTTON:    break;
 373     case wxCURSOR_NO_ENTRY:         return kwxCursorNoEntry;
 374     case wxCURSOR_PAINT_BRUSH:      return kwxCursorPaintBrush;
 375     case wxCURSOR_PENCIL:           return kwxCursorPencil;
 376     case wxCURSOR_POINT_LEFT:       return kwxCursorPointLeft;
 377     case wxCURSOR_POINT_RIGHT:      return kwxCursorPointRight;
 378     case wxCURSOR_QUESTION_ARROW:   return kwxCursorQuestionArrow;
 379     case wxCURSOR_RIGHT_BUTTON:     break;
 380     case wxCURSOR_SIZENESW:         return kwxCursorSizeNESW;
 381     case wxCURSOR_SIZENS:           return kwxCursorSizeNS;  // also NSCursor
 382     case wxCURSOR_SIZENWSE:         return kwxCursorSizeNWSE;
 383     case wxCURSOR_SIZEWE:           break;  // NSCursor
 384     case wxCURSOR_SIZING:           return kwxCursorSize;
 385     case wxCURSOR_SPRAYCAN:         return kwxCursorRoller;
 386     case wxCURSOR_WAIT:             break;
 387     case wxCURSOR_WATCH:            break;
 388     case wxCURSOR_BLANK:            return kwxCursorBlank;
 389     case wxCURSOR_ARROWWAIT:        break;
 390     default:                        break;
 391     }
 392     return -1;
 393 }
 394
 395 // Keep an array of stock cursors so they can share wxCursorRefData and thus
 396 // wxObject::IsSameAs will return true.
 397 // They will obviously be destroyed at static destruction time which should
 398 // theoretically be fine.
 399 static wxCursor s_stockCursors[wxCURSOR_MAX];
 400
 401 // Cursors by stock number (enum wxStockCursor)
 402 wxCursor::wxCursor(int stock_cursor_id)
 403 {
 404     // We default-constructed wxObject so our m_refData == NULL
 405     if(stock_cursor_id >= 0 && stock_cursor_id < wxCURSOR_MAX)
 406     {
 407         // Attempt to reference an existing stock cursor
 408         Ref(s_stockCursors[stock_cursor_id]);
 409     }
 410     // If we succeeded in getting an existing stock cursor, we're done.
 411     if(m_refData != NULL)
 412         return;
 413
 414     m_refData = new wxCursorRefData;
 415
 416     M_CURSORDATA->m_hCursor = nil;
 417
 418     wxCHECK_RET( stock_cursor_id > wxCURSOR_NONE && stock_cursor_id < wxCURSOR_MAX,
 419             wxT("invalid cursor id in wxCursor() ctor") );
 420
 421     // Stage 1: Try a system cursor
 422     SEL cursorSelector;
 423     if( (cursorSelector = GetCursorSelectorForStockCursor(stock_cursor_id)) != NULL)
 424     {
 425         M_CURSORDATA->m_hCursor = [GetSystemCursorWithSelector(cursorSelector) retain];
 426     }
 427
 428     // TODO: Provide a pointing hand for OS X < 10.3 if desired
 429
 430     // Stage 2: Try one of the 'CURS'-style cursors
 431     if(M_CURSORDATA->m_hCursor == nil)
 432     {
 433         int privateId;
 434         if( (privateId = GetPrivateCursorIdForStockCursor(stock_cursor_id)) >= 0)
 435         {
 436             M_CURSORDATA->m_hCursor = NSCursorCreateWithPrivateId(privateId);
 437         }
 438     }
 439
 440     // Stage 3: Give up, complain, and use a normal arrow
 441     if(M_CURSORDATA->m_hCursor == nil)
 442     {
 443         wxLogDebug(wxT("Could not find suitable cursor for wxStockCursor = %d.  Using normal pointer."), stock_cursor_id);
 444         M_CURSORDATA->m_hCursor = [[NSCursor arrowCursor] retain];
 445     }
 446
 447     // This should never happen as the arrowCursor should always exist.
 448     wxASSERT(M_CURSORDATA->m_hCursor != nil);
 449
 450     // Store ourself as the new stock cursor for this ID so that future
 451     // calls will share the same ref data.
 452     if(stock_cursor_id >= 0 && stock_cursor_id < wxCURSOR_MAX)
 453     {
 454         s_stockCursors[stock_cursor_id] = *this;
 455     }
 456 }
 457
 458 wxCursor::~wxCursor()
 459 {
 460 }
 461
 462 // Global cursor setting
 463 void wxSetCursor(const wxCursor& cursor)
 464 {
 465     if (cursor.GetNSCursor())
 466         [cursor.GetNSCursor() push];
 467 }
 468
 469 static int wxBusyCursorCount = 0;
 470
 471 // Set the cursor to the busy cursor for all windows
 472 void wxBeginBusyCursor(const wxCursor *cursor)
 473 {
 474     wxBusyCursorCount ++;
 475     if (wxBusyCursorCount == 1)
 476     {
 477         // TODO
 478     }
 479     else
 480     {
 481         // TODO
 482     }
 483 }
 484
 485 // Restore cursor to normal
 486 void wxEndBusyCursor()
 487 {
 488     if (wxBusyCursorCount == 0)
 489         return;
 490
 491     wxBusyCursorCount --;
 492     if (wxBusyCursorCount == 0)
 493     {
 494         // TODO
 495     }
 496 }
 497
 498 // true if we're between the above two calls
 499 bool wxIsBusy()
 500 {
 501   return (wxBusyCursorCount > 0);
 502 }