src/mac/clipbrd.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        clipbrd.cpp
   3 // Purpose:     Clipboard functionality
   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 "clipbrd.h"
  14 #endif
  15
  16 #include "wx/app.h"
  17 #include "wx/frame.h"
  18 #include "wx/bitmap.h"
  19 #include "wx/utils.h"
  20 #include "wx/metafile.h"
  21 #include "wx/clipbrd.h"
  22 #include "wx/intl.h"
  23 #include "wx/log.h"
  24
  25 #ifndef __DARWIN__
  26 #include <Scrap.h>
  27 #endif
  28 #include "wx/mac/uma.h"
  29
  30 #define wxUSE_DATAOBJ 1
  31
  32 #include <string.h>
  33
  34 // the trace mask we use with wxLogTrace() - call
  35 // wxLog::AddTraceMask(TRACE_CLIPBOARD) to enable the trace messages from here
  36 // (there will be a *lot* of them!)
  37 static const wxChar *TRACE_CLIPBOARD = _T("clipboard");
  38
  39 void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
  40 {
  41 #if !TARGET_CARBON
  42     OSErr err = noErr ;
  43 #else
  44     OSStatus err = noErr ;
  45 #endif
  46     void * data = NULL ;
  47     Size byteCount;
  48
  49     switch (dataFormat.GetType())
  50     {
  51     case wxDF_OEMTEXT:
  52         dataFormat = wxDF_TEXT;
  53         // fall through
  54
  55     case wxDF_TEXT:
  56         break;
  57     case wxDF_UNICODETEXT:
  58         break;
  59     case wxDF_BITMAP :
  60     case wxDF_METAFILE :
  61         break ;
  62     default:
  63         {
  64             wxLogError(_("Unsupported clipboard format."));
  65             return NULL;
  66         }
  67     }
  68
  69 #if TARGET_CARBON
  70     ScrapRef scrapRef;
  71
  72     err = GetCurrentScrap( &scrapRef );
  73     if ( err != noTypeErr && err != memFullErr )
  74     {
  75         ScrapFlavorFlags    flavorFlags;
  76
  77         if (( err = GetScrapFlavorFlags( scrapRef, dataFormat.GetFormatId(), &flavorFlags )) == noErr)
  78         {
  79             if (( err = GetScrapFlavorSize( scrapRef, dataFormat.GetFormatId(), &byteCount )) == noErr)
  80             {
  81                 Size allocSize = byteCount ;
  82                 if ( dataFormat.GetType() == wxDF_TEXT )
  83                     allocSize += 1 ;
  84                 else if ( dataFormat.GetType() == wxDF_UNICODETEXT )
  85                     allocSize += 2 ;
  86
  87                 data = new char[ allocSize ] ;
  88
  89                 if (( err = GetScrapFlavorData( scrapRef, dataFormat.GetFormatId(), &byteCount , data )) == noErr )
  90                 {
  91                     *len = allocSize ;
  92                     if ( dataFormat.GetType() == wxDF_TEXT )
  93                         ((char*)data)[byteCount] = 0 ;
  94                     if ( dataFormat.GetType() == wxDF_UNICODETEXT )
  95                         ((wxChar*)data)[byteCount/2] = 0 ;
  96                 }
  97                 else
  98                 {
  99                     delete[] ((char *)data) ;
 100                     data = NULL ;
 101                 }
 102             }
 103         }
 104     }
 105
 106 #else
 107     long offset ;
 108     Handle datahandle = NewHandle(0) ;
 109     HLock( datahandle ) ;
 110     GetScrap( datahandle , dataFormat.GetFormatId() , &offset ) ;
 111     HUnlock( datahandle ) ;
 112     if ( GetHandleSize( datahandle ) > 0 )
 113     {
 114         byteCount = GetHandleSize( datahandle ) ;
 115         Size allocSize = byteCount ;
 116         if ( dataFormat.GetType() == wxDF_TEXT )
 117             allocSize += 1 ;
 118         else if ( dataFormat.GetType() == wxDF_UNICODETEXT )
 119             allocSize += 2 ;
 120
 121         data = new char[ allocSize ] ;
 122
 123         memcpy( (char*) data , (char*) *datahandle , byteCount ) ;
 124         if ( dataFormat.GetType() == wxDF_TEXT )
 125             ((char*)data)[byteCount] = 0 ;
 126         if ( dataFormat.GetType() == wxDF_UNICODETEXT )
 127             ((wxChar*)data)[byteCount/2] = 0 ;
 128         *len = byteCount ;
 129     }
 130     DisposeHandle( datahandle ) ;
 131 #endif
 132     if ( err )
 133     {
 134         wxLogSysError(_("Failed to get clipboard data."));
 135
 136         return NULL ;
 137     }
 138
 139     if ( dataFormat.GetType() == wxDF_TEXT )
 140     {
 141         char * buf = (char*) data ;
 142         while( (buf=strchr(buf,0x0a)) != NULL )
 143         {
 144             *buf = 13 ;
 145             buf++ ;
 146         }
 147     }
 148
 149     return data;
 150 }
 151
 152
 153 /*
 154  * Generalized clipboard implementation by Matthew Flatt
 155  */
 156
 157 IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject)
 158
 159 wxClipboard::wxClipboard()
 160 {
 161     m_open = false ;
 162     m_data = NULL ;
 163 }
 164
 165 wxClipboard::~wxClipboard()
 166 {
 167     if (m_data)
 168     {
 169         delete m_data;
 170         m_data = (wxDataObject*) NULL;
 171     }
 172 }
 173
 174 void wxClipboard::Clear()
 175 {
 176     if (m_data)
 177     {
 178         delete m_data;
 179         m_data = (wxDataObject*) NULL;
 180     }
 181 #if TARGET_CARBON
 182     OSStatus err ;
 183     err = ClearCurrentScrap( );
 184 #else
 185     OSErr err ;
 186     err = ZeroScrap( );
 187 #endif
 188     if ( err )
 189     {
 190         wxLogSysError(_("Failed to empty the clipboard."));
 191     }
 192 }
 193
 194 bool wxClipboard::Flush()
 195 {
 196     return FALSE;
 197 }
 198
 199 bool wxClipboard::Open()
 200 {
 201     wxCHECK_MSG( !m_open, FALSE, wxT("clipboard already open") );
 202     m_open = true ;
 203     return true ;
 204 }
 205
 206 bool wxClipboard::IsOpened() const
 207 {
 208     return m_open;
 209 }
 210
 211 bool wxClipboard::SetData( wxDataObject *data )
 212 {
 213     // as we can only store one wxDataObject, this is the same in this
 214     // implementation
 215     return AddData( data );
 216 }
 217
 218 bool wxClipboard::AddData( wxDataObject *data )
 219 {
 220     wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") );
 221
 222     wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
 223
 224     /* we can only store one wxDataObject */
 225     Clear();
 226
 227     m_data = data;
 228
 229     /* get formats from wxDataObjects */
 230     wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
 231     m_data->GetAllFormats( array );
 232
 233     for (size_t i = 0; i < m_data->GetFormatCount(); i++)
 234     {
 235         wxLogTrace( TRACE_CLIPBOARD,
 236                     wxT("wxClipboard now supports atom %s"),
 237                     array[i].GetId().c_str() );
 238
 239 #if !TARGET_CARBON
 240         OSErr err = noErr ;
 241 #else
 242         OSStatus err = noErr ;
 243 #endif
 244
 245        switch ( array[i].GetType() )
 246        {
 247            case wxDF_TEXT:
 248            case wxDF_OEMTEXT:
 249            {
 250                wxTextDataObject* textDataObject = (wxTextDataObject*) data;
 251                wxCharBuffer buf = textDataObject->GetText().mb_str() ;
 252                err = UMAPutScrap( strlen(buf) , kScrapFlavorTypeText , (void*) buf.data()  ) ;
 253            }
 254            break ;
 255 #if wxUSE_UNICODE
 256            case wxDF_UNICODETEXT :
 257            {
 258                wxTextDataObject* textDataObject = (wxTextDataObject*) data;
 259                wxString str(textDataObject->GetText());
 260                err = UMAPutScrap( str.Length() * sizeof(wxChar) , kScrapFlavorTypeUnicode , (void*) str.wc_str()  ) ;
 261            }
 262            break ;
 263 #endif
 264 #if wxUSE_DRAG_AND_DROP
 265         case wxDF_METAFILE:
 266            {
 267                 wxMetafileDataObject* metaFileDataObject =
 268                 (wxMetafileDataObject*) data;
 269                   wxMetafile metaFile = metaFileDataObject->GetMetafile();
 270                 PicHandle pict = (PicHandle) metaFile.GetHMETAFILE() ;
 271                   HLock( (Handle) pict ) ;
 272                   err = UMAPutScrap( GetHandleSize(  (Handle) pict ) , kScrapFlavorTypePicture , *pict ) ;
 273                   HUnlock(  (Handle) pict ) ;
 274            }
 275            break ;
 276 #endif
 277            case wxDF_BITMAP:
 278            case wxDF_DIB:
 279            {
 280                    bool created = false ;
 281                    PicHandle pict = NULL ;
 282
 283                    wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject*) data ;
 284                    pict = (PicHandle) bitmapDataObject->GetBitmap().GetPict( &created ) ;
 285
 286                   HLock( (Handle) pict ) ;
 287                   err = UMAPutScrap( GetHandleSize(  (Handle) pict ) , kScrapFlavorTypePicture , *pict ) ;
 288                   HUnlock(  (Handle) pict ) ;
 289                   if ( created )
 290                       KillPicture( pict ) ;
 291            }
 292            default:
 293                 break ;
 294        }
 295
 296     }
 297
 298     delete[] array;
 299
 300     return true ;
 301 }
 302
 303 void wxClipboard::Close()
 304 {
 305     m_open = false ;
 306 }
 307
 308 bool wxClipboard::IsSupported( const wxDataFormat &dataFormat )
 309 {
 310   if ( m_data )
 311   {
 312     return m_data->IsSupported( dataFormat ) ;
 313   }
 314 #if TARGET_CARBON
 315     OSStatus err = noErr;
 316     ScrapRef scrapRef;
 317
 318     err = GetCurrentScrap( &scrapRef );
 319     if ( err != noTypeErr && err != memFullErr )
 320     {
 321         ScrapFlavorFlags    flavorFlags;
 322         Size                byteCount;
 323
 324         if (( err = GetScrapFlavorFlags( scrapRef, dataFormat.GetFormatId(), &flavorFlags )) == noErr)
 325         {
 326             if (( err = GetScrapFlavorSize( scrapRef, dataFormat.GetFormatId(), &byteCount )) == noErr)
 327             {
 328                 return TRUE ;
 329             }
 330         }
 331     }
 332     return FALSE;
 333
 334 #else
 335     long offset ;
 336     Handle datahandle = NewHandle(0) ;
 337     HLock( datahandle ) ;
 338     GetScrap( datahandle , dataFormat.GetFormatId() , &offset ) ;
 339     HUnlock( datahandle ) ;
 340     bool hasData = GetHandleSize( datahandle ) > 0 ;
 341     DisposeHandle( datahandle ) ;
 342     return hasData ;
 343 #endif
 344 }
 345
 346 bool wxClipboard::GetData( wxDataObject& data )
 347 {
 348     wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") );
 349
 350     size_t formatcount = data.GetFormatCount() + 1 ;
 351     wxDataFormat *array = new wxDataFormat[ formatcount  ];
 352     array[0] = data.GetPreferredFormat();
 353     data.GetAllFormats( &array[1] );
 354
 355     bool transferred = false ;
 356
 357     if ( m_data )
 358     {
 359       for (size_t i = 0; !transferred && i < formatcount ; i++)
 360       {
 361           wxDataFormat format = array[i] ;
 362           if ( m_data->IsSupported( format ) )
 363           {
 364             int size = m_data->GetDataSize( format );
 365             transferred = true ;
 366
 367             if (size == 0)
 368             {
 369               data.SetData(format , 0 , 0 ) ;
 370             }
 371             else
 372             {
 373               char *d = new char[size];
 374               m_data->GetDataHere( format , (void*) d );
 375               data.SetData( format , size , d ) ;
 376               delete[] d ;
 377             }
 378           }
 379        }
 380     }
 381     /* get formats from wxDataObjects */
 382     if ( !transferred )
 383     {
 384       for (size_t i = 0; !transferred && i < formatcount ; i++)
 385       {
 386           wxDataFormat format = array[i] ;
 387
 388           switch ( format.GetType() )
 389           {
 390               case wxDF_TEXT :
 391               case wxDF_OEMTEXT :
 392               case wxDF_BITMAP :
 393               case wxDF_METAFILE :
 394               {
 395                   long len ;
 396                   char* s = (char*)wxGetClipboardData(format, &len );
 397                   if ( s )
 398                   {
 399                     data.SetData( format , len , s ) ;
 400                     delete [] s;
 401
 402                     transferred = true ;
 403                   }
 404               }
 405                             break ;
 406
 407               default :
 408                 break ;
 409           }
 410        }
 411     }
 412
 413     delete[] array ;
 414     return transferred ;
 415 }