src/osx/carbon/icon.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/icon.cpp
   3 // Purpose:     wxIcon 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 #include "wx/wxprec.h"
  13
  14 #if wxOSX_USE_COCOA_OR_CARBON
  15
  16 #include "wx/icon.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/image.h"
  20 #endif
  21
  22 #include "wx/osx/private.h"
  23
  24 IMPLEMENT_DYNAMIC_CLASS(wxIcon, wxGDIObject)
  25
  26 #define M_ICONDATA ((wxIconRefData *)m_refData)
  27
  28 class WXDLLEXPORT wxIconRefData : public wxGDIRefData
  29 {
  30 public:
  31     wxIconRefData() { Init(); }
  32     wxIconRefData( WXHICON iconref, int desiredWidth, int desiredHeight );
  33     virtual ~wxIconRefData() { Free(); }
  34
  35     virtual bool IsOk() const { return m_iconRef != NULL; }
  36
  37     virtual void Free();
  38
  39     void SetWidth( int width ) { m_width = width; }
  40     void SetHeight( int height ) { m_height = height; }
  41
  42     int GetWidth() const { return m_width; }
  43     int GetHeight() const { return m_height; }
  44
  45     WXHICON GetHICON() const { return (WXHICON) m_iconRef; }
  46
  47 private:
  48     void Init();
  49
  50     IconRef m_iconRef;
  51     int m_width;
  52     int m_height;
  53
  54     // We can (easily) copy m_iconRef so we don't implement the copy ctor.
  55     wxDECLARE_NO_COPY_CLASS(wxIconRefData);
  56 };
  57
  58
  59 wxIconRefData::wxIconRefData( WXHICON icon, int desiredWidth, int desiredHeight )
  60 {
  61     m_iconRef = (IconRef)( icon ) ;
  62
  63     // Standard sizes
  64     SetWidth( desiredWidth == -1 ? 32 : desiredWidth ) ;
  65     SetHeight( desiredHeight == -1 ? 32 : desiredHeight ) ;
  66 }
  67
  68 void wxIconRefData::Init()
  69 {
  70     m_iconRef = NULL ;
  71     m_width =
  72     m_height = 0;
  73 }
  74
  75 void wxIconRefData::Free()
  76 {
  77     if ( m_iconRef )
  78     {
  79         ReleaseIconRef( m_iconRef ) ;
  80         m_iconRef = NULL ;
  81     }
  82 }
  83
  84 //
  85 //
  86 //
  87
  88 wxIcon::wxIcon()
  89 {
  90 }
  91
  92 wxIcon::wxIcon( const char bits[], int width, int height )
  93 {
  94     wxBitmap bmp( bits, width, height ) ;
  95     CopyFromBitmap( bmp ) ;
  96 }
  97
  98 wxIcon::wxIcon(const char* const* bits)
  99 {
 100     wxBitmap bmp( bits ) ;
 101     CopyFromBitmap( bmp ) ;
 102 }
 103
 104 wxIcon::wxIcon(
 105     const wxString& icon_file, wxBitmapType flags,
 106     int desiredWidth, int desiredHeight )
 107 {
 108     LoadFile( icon_file, flags, desiredWidth, desiredHeight );
 109 }
 110
 111 wxIcon::wxIcon(WXHICON icon, const wxSize& size)
 112       : wxGDIObject()
 113 {
 114     // as the icon owns that ref, we have to acquire it as well
 115     if (icon)
 116         AcquireIconRef( (IconRef) icon ) ;
 117
 118     m_refData = new wxIconRefData( icon, size.x, size.y ) ;
 119 }
 120
 121 wxIcon::~wxIcon()
 122 {
 123 }
 124
 125 wxGDIRefData *wxIcon::CreateGDIRefData() const
 126 {
 127     return new wxIconRefData;
 128 }
 129
 130 wxGDIRefData *
 131 wxIcon::CloneGDIRefData(const wxGDIRefData * WXUNUSED(data)) const
 132 {
 133     wxFAIL_MSG( wxS("Cloning icons is not implemented in wxCarbon.") );
 134
 135     return new wxIconRefData;
 136 }
 137
 138 WXHICON wxIcon::GetHICON() const
 139 {
 140     wxASSERT( IsOk() ) ;
 141
 142     return (WXHICON) ((wxIconRefData*)m_refData)->GetHICON() ;
 143 }
 144
 145 int wxIcon::GetWidth() const
 146 {
 147    wxCHECK_MSG( IsOk(), -1, wxT("invalid icon") );
 148
 149    return M_ICONDATA->GetWidth();
 150 }
 151
 152 int wxIcon::GetHeight() const
 153 {
 154    wxCHECK_MSG( IsOk(), -1, wxT("invalid icon") );
 155
 156    return M_ICONDATA->GetHeight();
 157 }
 158
 159 int wxIcon::GetDepth() const
 160 {
 161     return 32;
 162 }
 163
 164 void wxIcon::SetDepth( int WXUNUSED(depth) )
 165 {
 166 }
 167
 168 void wxIcon::SetWidth( int WXUNUSED(width) )
 169 {
 170 }
 171
 172 void wxIcon::SetHeight( int WXUNUSED(height) )
 173 {
 174 }
 175
 176 // Load an icon based on resource name or filel name
 177 // Return true on success, false otherwise
 178 bool wxIcon::LoadFile(
 179     const wxString& filename, wxBitmapType type,
 180     int desiredWidth, int desiredHeight )
 181 {
 182     if( type == wxBITMAP_TYPE_ICON_RESOURCE )
 183     {
 184         if( LoadIconFromSystemResource( filename, desiredWidth, desiredHeight ) )
 185             return true;
 186         else
 187             return LoadIconFromBundleResource( filename, desiredWidth, desiredHeight );
 188     }
 189     else  if( type == wxBITMAP_TYPE_ICON )
 190     {
 191         return LoadIconFromFile( filename, desiredWidth, desiredHeight );
 192     }
 193     else
 194     {
 195         return LoadIconAsBitmap( filename, type, desiredWidth, desiredHeight );
 196     }
 197 }
 198
 199 // Load a well known system icon by its wxWidgets identifier
 200 // Returns true on success, false otherwise
 201 bool wxIcon::LoadIconFromSystemResource(const wxString& resourceName, int desiredWidth, int desiredHeight)
 202 {
 203     UnRef();
 204
 205     OSType theId = 0 ;
 206
 207     if ( resourceName == wxT("wxICON_INFORMATION") )
 208     {
 209         theId = kAlertNoteIcon ;
 210     }
 211     else if ( resourceName == wxT("wxICON_QUESTION") )
 212     {
 213         theId = kAlertCautionIcon ;
 214     }
 215     else if ( resourceName == wxT("wxICON_WARNING") )
 216     {
 217         theId = kAlertCautionIcon ;
 218     }
 219     else if ( resourceName == wxT("wxICON_ERROR") )
 220     {
 221         theId = kAlertStopIcon ;
 222     }
 223     else if ( resourceName == wxT("wxICON_FOLDER") )
 224     {
 225         theId = kGenericFolderIcon ;
 226     }
 227     else if ( resourceName == wxT("wxICON_FOLDER_OPEN") )
 228     {
 229         theId = kOpenFolderIcon ;
 230     }
 231     else if ( resourceName == wxT("wxICON_NORMAL_FILE") )
 232     {
 233         theId = kGenericDocumentIcon ;
 234     }
 235     else if ( resourceName == wxT("wxICON_EXECUTABLE_FILE") )
 236     {
 237         theId = kGenericApplicationIcon ;
 238     }
 239     else if ( resourceName == wxT("wxICON_CDROM") )
 240     {
 241         theId = kGenericCDROMIcon ;
 242     }
 243     else if ( resourceName == wxT("wxICON_FLOPPY") )
 244     {
 245         theId = kGenericFloppyIcon ;
 246     }
 247     else if ( resourceName == wxT("wxICON_HARDDISK") )
 248     {
 249         theId = kGenericHardDiskIcon ;
 250     }
 251     else if ( resourceName == wxT("wxICON_REMOVABLE") )
 252     {
 253         theId = kGenericRemovableMediaIcon ;
 254     }
 255     else if ( resourceName == wxT("wxICON_DELETE") )
 256     {
 257         theId = kToolbarDeleteIcon ;
 258     }
 259     else if ( resourceName == wxT("wxICON_GO_BACK") )
 260     {
 261         theId = kBackwardArrowIcon ;
 262     }
 263     else if ( resourceName == wxT("wxICON_GO_FORWARD") )
 264     {
 265         theId = kForwardArrowIcon ;
 266     }
 267     else if ( resourceName == wxT("wxICON_GO_HOME") )
 268     {
 269         theId = kToolbarHomeIcon ;
 270     }
 271     else if ( resourceName == wxT("wxICON_HELP_SETTINGS") )
 272     {
 273         theId = kGenericFontIcon ;
 274     }
 275     else if ( resourceName == wxT("wxICON_HELP_PAGE") )
 276     {
 277         theId = kGenericDocumentIcon ;
 278     }
 279
 280     if ( theId != 0 )
 281     {
 282         IconRef iconRef = NULL ;
 283         verify_noerr( GetIconRef( kOnSystemDisk, kSystemIconsCreator, theId, &iconRef ) ) ;
 284         if ( iconRef )
 285         {
 286             m_refData = new wxIconRefData( (WXHICON) iconRef, desiredWidth, desiredHeight ) ;
 287             return true ;
 288         }
 289     }
 290
 291     return false;
 292 }
 293
 294 // Load an icon of type 'icns' by resource by name
 295 // The resource must exist in one of the currently accessible bundles
 296 // (usually this means the application bundle for the current application)
 297 // Return true on success, false otherwise
 298 bool wxIcon::LoadIconFromBundleResource(const wxString& resourceName, int desiredWidth, int desiredHeight)
 299 {
 300     UnRef();
 301
 302     IconRef iconRef = NULL ;
 303
 304     // first look in the resource fork
 305     if ( iconRef == NULL )
 306     {
 307         Str255 theName ;
 308
 309         wxMacStringToPascal( resourceName , theName ) ;
 310         Handle resHandle = GetNamedResource( 'icns' , theName ) ;
 311         if ( resHandle != 0L )
 312         {
 313             IconFamilyHandle iconFamily = (IconFamilyHandle) resHandle ;
 314             OSStatus err = GetIconRefFromIconFamilyPtr( *iconFamily, GetHandleSize((Handle) iconFamily), &iconRef );
 315
 316             if ( err != noErr )
 317             {
 318                 wxFAIL_MSG("Error when constructing icon ref");
 319             }
 320
 321             ReleaseResource( resHandle ) ;
 322         }
 323     }
 324     if ( iconRef == NULL )
 325     {
 326         wxCFStringRef name(resourceName);
 327         FSRef iconFSRef;
 328
 329         wxCFRef<CFURLRef> iconURL(CFBundleCopyResourceURL(CFBundleGetMainBundle(), name, CFSTR("icns"), NULL));
 330
 331         if (CFURLGetFSRef(iconURL, &iconFSRef))
 332         {
 333             // Get a handle on the icon family
 334             IconFamilyHandle iconFamily;
 335             OSStatus err = ReadIconFromFSRef( &iconFSRef, &iconFamily );
 336
 337             if ( err == noErr )
 338             {
 339                 err = GetIconRefFromIconFamilyPtr( *iconFamily, GetHandleSize((Handle) iconFamily), &iconRef );
 340             }
 341             ReleaseResource( (Handle) iconFamily );
 342         }
 343     }
 344
 345     if ( iconRef )
 346     {
 347         m_refData = new wxIconRefData( (WXHICON) iconRef, desiredWidth, desiredHeight );
 348         return true;
 349     }
 350
 351    return false;
 352 }
 353
 354 // Load an icon from an icon file using the underlying OS X API
 355 // The icon file must be in a format understood by the OS
 356 // Return true for success, false otherwise
 357 bool wxIcon::LoadIconFromFile(const wxString& filename, int desiredWidth, int desiredHeight)
 358 {
 359     UnRef();
 360
 361     OSStatus err;
 362     bool result = false;
 363
 364     // Get a file system reference
 365     FSRef fsRef;
 366     err = FSPathMakeRef( (const wxUint8*)filename.utf8_str().data(), &fsRef, NULL );
 367
 368     if( err != noErr )
 369         return false;
 370
 371     // Get a handle on the icon family
 372     IconFamilyHandle iconFamily;
 373     err = ReadIconFromFSRef( &fsRef, &iconFamily );
 374
 375     if( err != noErr )
 376         return false;
 377
 378     // Get the icon reference itself
 379     IconRef iconRef;
 380     err = GetIconRefFromIconFamilyPtr( *iconFamily, GetHandleSize((Handle) iconFamily), &iconRef );
 381
 382     if( err == noErr )
 383     {
 384         // If everything is OK, assign m_refData
 385         m_refData = new wxIconRefData( (WXHICON) iconRef, desiredWidth, desiredHeight );
 386         result = true;
 387     }
 388
 389     // Release the iconFamily before returning
 390     ReleaseResource( (Handle) iconFamily );
 391     return result;
 392 }
 393
 394 // Load an icon from a file using functionality from wxWidgets
 395 // A suitable bitmap handler (or image handler) must be available
 396 // Return true on success, false otherwise
 397 bool wxIcon::LoadIconAsBitmap(const wxString& filename, wxBitmapType type, int desiredWidth, int desiredHeight)
 398 {
 399     UnRef();
 400
 401     wxBitmapHandler *handler = wxBitmap::FindHandler( type );
 402
 403     if ( handler )
 404     {
 405         wxBitmap bmp ;
 406         if ( handler->LoadFile( &bmp , filename, type, desiredWidth, desiredHeight ))
 407         {
 408             CopyFromBitmap( bmp ) ;
 409             return true ;
 410         }
 411     }
 412
 413 #if wxUSE_IMAGE
 414     else
 415     {
 416         wxImage loadimage( filename, type );
 417         if (loadimage.IsOk())
 418         {
 419             if ( desiredWidth == -1 )
 420                 desiredWidth = loadimage.GetWidth() ;
 421             if ( desiredHeight == -1 )
 422                 desiredHeight = loadimage.GetHeight() ;
 423             if ( desiredWidth != loadimage.GetWidth() || desiredHeight != loadimage.GetHeight() )
 424                 loadimage.Rescale( desiredWidth , desiredHeight ) ;
 425
 426             wxBitmap bmp( loadimage );
 427             CopyFromBitmap( bmp ) ;
 428
 429             return true;
 430         }
 431     }
 432 #endif
 433
 434     return false;
 435 }
 436
 437
 438 void wxIcon::CopyFromBitmap( const wxBitmap& bmp )
 439 {
 440     UnRef() ;
 441
 442     // as the bitmap owns that ref, we have to acquire it as well
 443
 444     int w = bmp.GetWidth() ;
 445     int h = bmp.GetHeight() ;
 446     int sz = wxMax( w , h ) ;
 447
 448     if ( sz == 24 || sz == 64 )
 449     {
 450         wxBitmap scaleBmp( bmp.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
 451         m_refData = new wxIconRefData( (WXHICON) scaleBmp.CreateIconRef(), bmp.GetWidth(), bmp.GetHeight()  ) ;
 452     }
 453     else
 454     {
 455         m_refData = new wxIconRefData( (WXHICON) bmp.CreateIconRef() , bmp.GetWidth(), bmp.GetHeight()  ) ;
 456     }
 457
 458 }
 459
 460 IMPLEMENT_DYNAMIC_CLASS(wxICONResourceHandler, wxBitmapHandler)
 461
 462 bool  wxICONResourceHandler::LoadFile(
 463     wxBitmap *bitmap, const wxString& name, wxBitmapType WXUNUSED(flags),
 464     int desiredWidth, int desiredHeight )
 465 {
 466     wxIcon icon ;
 467     if ( icon.LoadFile( name , wxBITMAP_TYPE_ICON_RESOURCE , desiredWidth , desiredHeight ) )
 468     {
 469         bitmap->CopyFromIcon( icon ) ;
 470         return bitmap->IsOk() ;
 471     }
 472     return false;
 473 }
 474
 475 #endif
 476