src/mac/carbon/cursor.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        cursor.cpp
   3 // Purpose:     wxCursor class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "cursor.h"
  14 #endif
  15
  16 #include "wx/defs.h"
  17
  18 #include "wx/app.h"
  19 #include "wx/cursor.h"
  20 #include "wx/icon.h"
  21 #include "wx/image.h"
  22 #include "wx/xpmdecod.h"
  23
  24 #include "wx/mac/private.h"
  25
  26 #if !USE_SHARED_LIBRARIES
  27 IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxBitmap)
  28 #endif
  29
  30 const short kwxCursorBullseye = 10 ;
  31 const short kwxCursorBlank = 11 ;
  32 const short kwxCursorPencil = 12 ;
  33 const short kwxCursorMagnifier = 13 ;
  34 const short kwxCursorNoEntry = 14 ;
  35 const short kwxCursorPaintBrush = 15 ;
  36 const short kwxCursorPointRight = 16 ;
  37 const short kwxCursorPointLeft = 17 ;
  38 const short kwxCursorQuestionArrow = 18 ;
  39 const short kwxCursorRightArrow = 19 ;
  40 const short kwxCursorSizeNS = 20 ;
  41 const short kwxCursorSize = 21 ;
  42 const short kwxCursorSizeNESW = 22 ;
  43 const short kwxCursorSizeNWSE = 23 ;
  44 const short kwxCursorRoller = 24 ;
  45
  46 wxCursor    gMacCurrentCursor ;
  47
  48 wxCursorRefData::wxCursorRefData()
  49 {
  50     m_width = 16;
  51     m_height = 16;
  52     m_hCursor = NULL ;
  53     m_disposeHandle = false ;
  54     m_releaseHandle = false ;
  55     m_isColorCursor = false ;
  56     m_themeCursor = -1 ;
  57 }
  58
  59 wxCursorRefData::~wxCursorRefData()
  60 {
  61     if ( m_isColorCursor )
  62     {
  63         ::DisposeCCursor( (CCrsrHandle) m_hCursor ) ;
  64     }
  65     else if ( m_disposeHandle )
  66     {
  67         ::DisposeHandle( (Handle ) m_hCursor ) ;
  68     }
  69     else if ( m_releaseHandle )
  70     {
  71         // we don't release the resource since it may already
  72         // be in use again
  73     }
  74 }
  75
  76 // Cursors
  77 wxCursor::wxCursor()
  78 {
  79 }
  80
  81 wxCursor::wxCursor(const char WXUNUSED(bits)[], int WXUNUSED(width), int WXUNUSED(height),
  82     int WXUNUSED(hotSpotX), int WXUNUSED(hotSpotY), const char WXUNUSED(maskBits)[])
  83 {
  84 }
  85
  86 wxCursor::wxCursor( const wxImage &image )
  87 {
  88     CreateFromImage( image ) ;
  89 }
  90
  91 wxCursor::wxCursor(const char **bits)
  92 {
  93     (void) CreateFromXpm(bits);
  94 }
  95
  96 wxCursor::wxCursor(char **bits)
  97 {
  98     (void) CreateFromXpm((const char **)bits);
  99 }
 100
 101 bool wxCursor::CreateFromXpm(const char **bits)
 102 {
 103     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid cursor data") )
 104     wxXPMDecoder decoder;
 105     wxImage img = decoder.ReadData(bits);
 106     wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid cursor data") )
 107         CreateFromImage( img ) ;
 108     return TRUE;
 109 }
 110
 111 short GetCTabIndex( CTabHandle colors , RGBColor *col )
 112 {
 113     short retval = 0 ;
 114     unsigned long bestdiff = 0xFFFF ;
 115     for ( int i = 0 ; i < (**colors).ctSize ; ++i )
 116     {
 117         unsigned long diff = abs(col->red -  (**colors).ctTable[i].rgb.red ) +
 118             abs(col->green -  (**colors).ctTable[i].rgb.green ) +
 119             abs(col->blue -  (**colors).ctTable[i].rgb.blue ) ;
 120         if ( diff < bestdiff )
 121         {
 122             bestdiff = diff ;
 123             retval = (**colors).ctTable[i].value ;
 124         }
 125     }
 126     return retval ;
 127 }
 128
 129 void wxCursor::CreateFromImage(const wxImage & image)
 130 {
 131     m_refData = new wxCursorRefData;
 132
 133     wxImage image16 = image.Scale(16,16) ;
 134        unsigned char * rgbBits = image16.GetData();
 135
 136
 137     int w = image16.GetWidth()  ;
 138     int h = image16.GetHeight() ;
 139     bool bHasMask = image16.HasMask() ;
 140
 141        int hotSpotX = image16.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
 142     int hotSpotY = image16.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
 143     if (hotSpotX < 0 || hotSpotX >= w)
 144             hotSpotX = 0;
 145     if (hotSpotY < 0 || hotSpotY >= h)
 146             hotSpotY = 0;
 147
 148 #if 0
 149     // monochrome implementation
 150     M_CURSORDATA->m_hCursor = NewHandle( sizeof( Cursor ) ) ;
 151     M_CURSORDATA->m_disposeHandle = true ;
 152     HLock( (Handle) M_CURSORDATA->m_hCursor ) ;
 153     CursPtr cp = *(CursHandle)M_CURSORDATA->m_hCursor ;
 154     memset( cp->data , 0 , sizeof( Bits16 ) ) ;
 155     memset( cp->mask , 0 , sizeof( Bits16 ) ) ;
 156
 157     unsigned char mr = image16.GetMaskRed() ;
 158     unsigned char mg = image16.GetMaskGreen() ;
 159     unsigned char mb = image16.GetMaskBlue() ;
 160     for ( int y = 0 ; y < h ; ++y )
 161     {
 162         short rowbits = 0 ;
 163         short maskbits = 0 ;
 164
 165         for ( int x = 0 ; x < w ; ++x )
 166         {
 167             long pos = (y * w + x) * 3;
 168
 169             unsigned char r = rgbBits[pos] ;
 170             unsigned char g = rgbBits[pos+1] ;
 171             unsigned char b = rgbBits[pos+2] ;
 172             if ( bHasMask && r==mr && g==mg && b==mb )
 173             {
 174                 // masked area, does not appear anywhere
 175             }
 176             else
 177             {
 178                 if ( (int)r + (int)g + (int)b < 0x0200 )
 179                 {
 180                     rowbits |= ( 1 << (15-x) ) ;
 181                 }
 182                 maskbits |= ( 1 << (15-x) ) ;
 183             }
 184         }
 185         cp->data[y] = rowbits ;
 186         cp->mask[y] = maskbits ;
 187     }
 188     if ( !bHasMask )
 189     {
 190         memcpy( cp->mask , cp->data , sizeof( Bits16) ) ;
 191     }
 192     cp->hotSpot.h = hotSpotX ;
 193     cp->hotSpot.v = hotSpotY ;
 194     HUnlock( (Handle) M_CURSORDATA->m_hCursor ) ;
 195 #else
 196     PixMapHandle pm = (PixMapHandle) NewHandleClear( sizeof (PixMap))  ;
 197     short extent = 16 ;
 198     short bytesPerPixel = 1 ;
 199     short depth = 8 ;
 200     Rect bounds = { 0 , 0 , extent , extent } ;
 201     CCrsrHandle ch = (CCrsrHandle) NewHandleClear ( sizeof( CCrsr ) ) ;
 202     CTabHandle newColors = GetCTable( 8 ) ;
 203     HandToHand((Handle *) &newColors);
 204     // set the values to the indices
 205     for ( int i = 0 ; i < (**newColors).ctSize ; ++i )
 206     {
 207         (**newColors).ctTable[i].value = i ;
 208     }
 209     HLock( (Handle) ch) ;
 210     (**ch).crsrType = 0x8001 ; // color cursors
 211     (**ch).crsrMap = pm ;
 212     short bytesPerRow = bytesPerPixel * extent ;
 213
 214     (**pm).baseAddr = 0;
 215     (**pm).rowBytes = bytesPerRow | 0x8000;
 216     (**pm).bounds = bounds;
 217     (**pm).pmVersion = 0;
 218     (**pm).packType = 0;
 219     (**pm).packSize = 0;
 220     (**pm).hRes = 0x00480000; /* 72 DPI default res */
 221     (**pm).vRes = 0x00480000; /* 72 DPI default res */
 222     (**pm).pixelSize = depth;
 223     (**pm).pixelType = 0;
 224     (**pm).cmpCount = 1;
 225     (**pm).cmpSize = depth;
 226     (**pm).pmTable = newColors;
 227
 228     (**ch).crsrData = NewHandleClear( extent * bytesPerRow ) ;
 229     (**ch).crsrXData = NULL ;
 230     (**ch).crsrXValid = 0;
 231     (**ch).crsrXHandle = NULL;
 232
 233     (**ch).crsrHotSpot.h = hotSpotX ;
 234     (**ch).crsrHotSpot.v = hotSpotY ;
 235     (**ch).crsrXTable = NULL ;
 236     (**ch).crsrID = GetCTSeed() ;
 237
 238     memset( (**ch).crsr1Data  , 0 , sizeof( Bits16 ) ) ;
 239     memset( (**ch).crsrMask , 0 , sizeof( Bits16 ) ) ;
 240
 241     unsigned char mr = image16.GetMaskRed() ;
 242     unsigned char mg = image16.GetMaskGreen() ;
 243     unsigned char mb = image16.GetMaskBlue() ;
 244     for ( int y = 0 ; y < h ; ++y )
 245     {
 246         short rowbits = 0 ;
 247         short maskbits = 0 ;
 248
 249         for ( int x = 0 ; x < w ; ++x )
 250         {
 251             long pos = (y * w + x) * 3;
 252
 253             unsigned char r = rgbBits[pos] ;
 254             unsigned char g = rgbBits[pos+1] ;
 255             unsigned char b = rgbBits[pos+2] ;
 256             RGBColor col = { 0xFFFF ,0xFFFF, 0xFFFF } ;
 257
 258             if ( bHasMask && r==mr && g==mg && b==mb )
 259             {
 260                 // masked area, does not appear anywhere
 261             }
 262             else
 263             {
 264                 if ( (int)r + (int)g + (int)b < 0x0200 )
 265                 {
 266                     rowbits |= ( 1 << (15-x) ) ;
 267                 }
 268                 maskbits |= ( 1 << (15-x) ) ;
 269
 270                 col = *((RGBColor*) wxColor( r , g , b ).GetPixel()) ;
 271             }
 272             *((*(**ch).crsrData) + y * bytesPerRow + x) =
 273                 GetCTabIndex( newColors , &col) ;
 274         }
 275         (**ch).crsr1Data[y] = rowbits ;
 276         (**ch).crsrMask[y] = maskbits ;
 277     }
 278     if ( !bHasMask )
 279     {
 280         memcpy( (**ch).crsrMask , (**ch).crsr1Data , sizeof( Bits16) ) ;
 281     }
 282
 283     HUnlock((Handle) ch) ;
 284     M_CURSORDATA->m_hCursor = ch ;
 285     M_CURSORDATA->m_isColorCursor = true ;
 286 #endif
 287 }
 288
 289 wxCursor::wxCursor(const wxString& cursor_file, long flags, int hotSpotX, int hotSpotY)
 290 {
 291     m_refData = new wxCursorRefData;
 292     if ( flags == wxBITMAP_TYPE_MACCURSOR_RESOURCE )
 293     {
 294         Str255 theName ;
 295                 wxMacStringToPascal( cursor_file , theName ) ;
 296
 297         wxStAppResource resload ;
 298         Handle resHandle = ::GetNamedResource( 'crsr' , theName ) ;
 299         if ( resHandle )
 300         {
 301             short theId = -1 ;
 302             OSType theType ;
 303             GetResInfo( resHandle , &theId , &theType , theName ) ;
 304             ReleaseResource( resHandle ) ;
 305             M_CURSORDATA->m_hCursor = GetCCursor( theId ) ;
 306             if ( M_CURSORDATA->m_hCursor )
 307                 M_CURSORDATA->m_isColorCursor = true ;
 308         }
 309         else
 310         {
 311             Handle resHandle = ::GetNamedResource( 'CURS' , theName ) ;
 312             if ( resHandle )
 313             {
 314                 short theId = -1 ;
 315                 OSType theType ;
 316                 GetResInfo( resHandle , &theId , &theType , theName ) ;
 317                 ReleaseResource( resHandle ) ;
 318                  M_CURSORDATA->m_hCursor = GetCursor( theId ) ;
 319                 if ( M_CURSORDATA->m_hCursor )
 320                     M_CURSORDATA->m_releaseHandle = true ;
 321             }
 322         }
 323     }
 324     else
 325     {
 326         wxImage image ;
 327         image.LoadFile( cursor_file , flags ) ;
 328         if( image.Ok() )
 329         {
 330             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X,hotSpotX ) ;
 331             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y,hotSpotY ) ;
 332             delete m_refData ;
 333             CreateFromImage(image) ;
 334         }
 335     }
 336 }
 337
 338 // Cursors by stock number
 339 wxCursor::wxCursor(int cursor_type)
 340 {
 341     m_refData = new wxCursorRefData;
 342
 343     switch (cursor_type)
 344     {
 345     case wxCURSOR_COPY_ARROW:
 346         M_CURSORDATA->m_themeCursor = kThemeCopyArrowCursor ;
 347         break;
 348     case wxCURSOR_WAIT:
 349         M_CURSORDATA->m_themeCursor = kThemeWatchCursor ;
 350         break;
 351     case wxCURSOR_IBEAM:
 352         M_CURSORDATA->m_themeCursor = kThemeIBeamCursor ;
 353         break;
 354     case wxCURSOR_CROSS:
 355         M_CURSORDATA->m_themeCursor = kThemeCrossCursor;
 356         break;
 357     case wxCURSOR_SIZENWSE:
 358         {
 359             wxStAppResource resload ;
 360             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorSizeNWSE);
 361         }
 362         break;
 363     case wxCURSOR_SIZENESW:
 364         {
 365             wxStAppResource resload ;
 366             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorSizeNESW);
 367         }
 368         break;
 369     case wxCURSOR_SIZEWE:
 370         {
 371             M_CURSORDATA->m_themeCursor = kThemeResizeLeftRightCursor;
 372         }
 373         break;
 374     case wxCURSOR_SIZENS:
 375         {
 376             wxStAppResource resload ;
 377             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorSizeNS);
 378         }
 379         break;
 380     case wxCURSOR_SIZING:
 381         {
 382             wxStAppResource resload ;
 383             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorSize);
 384         }
 385         break;
 386     case wxCURSOR_HAND:
 387         {
 388             M_CURSORDATA->m_themeCursor = kThemePointingHandCursor;
 389         }
 390         break;
 391     case wxCURSOR_BULLSEYE:
 392         {
 393             wxStAppResource resload ;
 394             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorBullseye);
 395         }
 396         break;
 397     case wxCURSOR_PENCIL:
 398         {
 399             wxStAppResource resload ;
 400             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorPencil);
 401         }
 402         break;
 403     case wxCURSOR_MAGNIFIER:
 404         {
 405             wxStAppResource resload ;
 406             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorMagnifier);
 407         }
 408         break;
 409     case wxCURSOR_NO_ENTRY:
 410         {
 411             wxStAppResource resload ;
 412             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorNoEntry);
 413         }
 414         break;
 415     case wxCURSOR_WATCH:
 416         {
 417             M_CURSORDATA->m_themeCursor = kThemeWatchCursor;
 418             break;
 419         }
 420     case wxCURSOR_PAINT_BRUSH:
 421         {
 422             wxStAppResource resload ;
 423             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorPaintBrush);
 424             break;
 425         }
 426     case wxCURSOR_POINT_LEFT:
 427         {
 428             wxStAppResource resload ;
 429             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorPointLeft);
 430             break;
 431         }
 432     case wxCURSOR_POINT_RIGHT:
 433         {
 434             wxStAppResource resload ;
 435             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorPointRight);
 436             break;
 437         }
 438     case wxCURSOR_QUESTION_ARROW:
 439         {
 440             wxStAppResource resload ;
 441             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorQuestionArrow);
 442             break;
 443         }
 444     case wxCURSOR_BLANK:
 445         {
 446             wxStAppResource resload ;
 447             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorBlank);
 448             break;
 449         }
 450     case wxCURSOR_RIGHT_ARROW:
 451         {
 452             wxStAppResource resload ;
 453             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorRightArrow);
 454             break;
 455         }
 456     case wxCURSOR_SPRAYCAN:
 457         {
 458             wxStAppResource resload ;
 459             M_CURSORDATA->m_hCursor = ::GetCursor(kwxCursorRoller);
 460             break;
 461         }
 462     case wxCURSOR_CHAR:
 463     case wxCURSOR_ARROW:
 464     case wxCURSOR_LEFT_BUTTON:
 465     case wxCURSOR_RIGHT_BUTTON:
 466     case wxCURSOR_MIDDLE_BUTTON:
 467     default:
 468         M_CURSORDATA->m_themeCursor = kThemeArrowCursor ;
 469         break;
 470     }
 471     if ( M_CURSORDATA->m_themeCursor == -1 )
 472         M_CURSORDATA->m_releaseHandle = true ;
 473 }
 474
 475 void wxCursor::MacInstall() const
 476 {
 477     gMacCurrentCursor = *this ;
 478     if ( m_refData && M_CURSORDATA->m_themeCursor != -1 )
 479     {
 480         SetThemeCursor( M_CURSORDATA->m_themeCursor ) ;
 481     }
 482     else if ( m_refData && M_CURSORDATA->m_hCursor )
 483     {
 484         if ( M_CURSORDATA->m_isColorCursor )
 485             ::SetCCursor( (CCrsrHandle) M_CURSORDATA->m_hCursor ) ;
 486         else
 487             ::SetCursor( * (CursHandle) M_CURSORDATA->m_hCursor ) ;
 488     }
 489     else
 490     {
 491         SetThemeCursor( kThemeArrowCursor ) ;
 492     }
 493 }
 494
 495 wxCursor::~wxCursor()
 496 {
 497 }
 498
 499 // Global cursor setting
 500 void wxSetCursor(const wxCursor& cursor)
 501 {
 502     cursor.MacInstall() ;
 503 }
 504
 505