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         wxMacConvertNewlines10To13( (char*) data ) ;
 142     }
 143
 144     return data;
 145 }
 146
 147
 148 /*
 149  * Generalized clipboard implementation by Matthew Flatt
 150  */
 151
 152 IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject)
 153
 154 wxClipboard::wxClipboard()
 155 {
 156     m_open = false ;
 157     m_data = NULL ;
 158 }
 159
 160 wxClipboard::~wxClipboard()
 161 {
 162     if (m_data)
 163     {
 164         delete m_data;
 165         m_data = (wxDataObject*) NULL;
 166     }
 167 }
 168
 169 void wxClipboard::Clear()
 170 {
 171     if (m_data)
 172     {
 173         delete m_data;
 174         m_data = (wxDataObject*) NULL;
 175     }
 176 #if TARGET_CARBON
 177     OSStatus err ;
 178     err = ClearCurrentScrap( );
 179 #else
 180     OSErr err ;
 181     err = ZeroScrap( );
 182 #endif
 183     if ( err )
 184     {
 185         wxLogSysError(_("Failed to empty the clipboard."));
 186     }
 187 }
 188
 189 bool wxClipboard::Flush()
 190 {
 191     return FALSE;
 192 }
 193
 194 bool wxClipboard::Open()
 195 {
 196     wxCHECK_MSG( !m_open, FALSE, wxT("clipboard already open") );
 197     m_open = true ;
 198     return true ;
 199 }
 200
 201 bool wxClipboard::IsOpened() const
 202 {
 203     return m_open;
 204 }
 205
 206 bool wxClipboard::SetData( wxDataObject *data )
 207 {
 208     // as we can only store one wxDataObject, this is the same in this
 209     // implementation
 210     return AddData( data );
 211 }
 212
 213 bool wxClipboard::AddData( wxDataObject *data )
 214 {
 215     wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") );
 216
 217     wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
 218
 219     /* we can only store one wxDataObject */
 220     Clear();
 221
 222     m_data = data;
 223
 224     /* get formats from wxDataObjects */
 225     wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
 226     m_data->GetAllFormats( array );
 227
 228     for (size_t i = 0; i < m_data->GetFormatCount(); i++)
 229     {
 230         wxLogTrace( TRACE_CLIPBOARD,
 231                     wxT("wxClipboard now supports atom %s"),
 232                     array[i].GetId().c_str() );
 233
 234 #if !TARGET_CARBON
 235         OSErr err = noErr ;
 236 #else
 237         OSStatus err = noErr ;
 238 #endif
 239
 240        switch ( array[i].GetType() )
 241        {
 242            case wxDF_TEXT:
 243            case wxDF_OEMTEXT:
 244            {
 245                wxTextDataObject* textDataObject = (wxTextDataObject*) data;
 246                wxCharBuffer buf = textDataObject->GetText().mb_str() ;
 247                err = UMAPutScrap( strlen(buf) , kScrapFlavorTypeText , (void*) buf.data()  ) ;
 248            }
 249            break ;
 250 #if wxUSE_UNICODE
 251            case wxDF_UNICODETEXT :
 252            {
 253                wxTextDataObject* textDataObject = (wxTextDataObject*) data;
 254                wxString str(textDataObject->GetText());
 255                err = UMAPutScrap( str.Length() * sizeof(wxChar) , kScrapFlavorTypeUnicode , (void*) str.wc_str()  ) ;
 256            }
 257            break ;
 258 #endif
 259 #if wxUSE_DRAG_AND_DROP
 260         case wxDF_METAFILE:
 261            {
 262                 wxMetafileDataObject* metaFileDataObject =
 263                 (wxMetafileDataObject*) data;
 264                   wxMetafile metaFile = metaFileDataObject->GetMetafile();
 265                 PicHandle pict = (PicHandle) metaFile.GetHMETAFILE() ;
 266                   HLock( (Handle) pict ) ;
 267                   err = UMAPutScrap( GetHandleSize(  (Handle) pict ) , kScrapFlavorTypePicture , *pict ) ;
 268                   HUnlock(  (Handle) pict ) ;
 269            }
 270            break ;
 271 #endif
 272            case wxDF_BITMAP:
 273            case wxDF_DIB:
 274            {
 275                    bool created = false ;
 276                    PicHandle pict = NULL ;
 277
 278                    wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject*) data ;
 279                    pict = (PicHandle) bitmapDataObject->GetBitmap().GetPict( &created ) ;
 280
 281                   HLock( (Handle) pict ) ;
 282                   err = UMAPutScrap( GetHandleSize(  (Handle) pict ) , kScrapFlavorTypePicture , *pict ) ;
 283                   HUnlock(  (Handle) pict ) ;
 284                   if ( created )
 285                       KillPicture( pict ) ;
 286            }
 287            default:
 288                 break ;
 289        }
 290
 291     }
 292
 293     delete[] array;
 294
 295     return true ;
 296 }
 297
 298 void wxClipboard::Close()
 299 {
 300     m_open = false ;
 301 }
 302
 303 bool wxClipboard::IsSupported( const wxDataFormat &dataFormat )
 304 {
 305   if ( m_data )
 306   {
 307     return m_data->IsSupported( dataFormat ) ;
 308   }
 309 #if TARGET_CARBON
 310     OSStatus err = noErr;
 311     ScrapRef scrapRef;
 312
 313     err = GetCurrentScrap( &scrapRef );
 314     if ( err != noTypeErr && err != memFullErr )
 315     {
 316         ScrapFlavorFlags    flavorFlags;
 317         Size                byteCount;
 318
 319         if (( err = GetScrapFlavorFlags( scrapRef, dataFormat.GetFormatId(), &flavorFlags )) == noErr)
 320         {
 321             if (( err = GetScrapFlavorSize( scrapRef, dataFormat.GetFormatId(), &byteCount )) == noErr)
 322             {
 323                 return TRUE ;
 324             }
 325         }
 326     }
 327     return FALSE;
 328
 329 #else
 330     long offset ;
 331     Handle datahandle = NewHandle(0) ;
 332     HLock( datahandle ) ;
 333     GetScrap( datahandle , dataFormat.GetFormatId() , &offset ) ;
 334     HUnlock( datahandle ) ;
 335     bool hasData = GetHandleSize( datahandle ) > 0 ;
 336     DisposeHandle( datahandle ) ;
 337     return hasData ;
 338 #endif
 339 }
 340
 341 bool wxClipboard::GetData( wxDataObject& data )
 342 {
 343     wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") );
 344
 345     size_t formatcount = data.GetFormatCount() + 1 ;
 346     wxDataFormat *array = new wxDataFormat[ formatcount  ];
 347     array[0] = data.GetPreferredFormat();
 348     data.GetAllFormats( &array[1] );
 349
 350     bool transferred = false ;
 351
 352     if ( m_data )
 353     {
 354       for (size_t i = 0; !transferred && i < formatcount ; i++)
 355       {
 356           wxDataFormat format = array[i] ;
 357           if ( m_data->IsSupported( format ) )
 358           {
 359             int size = m_data->GetDataSize( format );
 360             transferred = true ;
 361
 362             if (size == 0)
 363             {
 364               data.SetData(format , 0 , 0 ) ;
 365             }
 366             else
 367             {
 368               char *d = new char[size];
 369               m_data->GetDataHere( format , (void*) d );
 370               data.SetData( format , size , d ) ;
 371               delete[] d ;
 372             }
 373           }
 374        }
 375     }
 376     /* get formats from wxDataObjects */
 377     if ( !transferred )
 378     {
 379       for (size_t i = 0; !transferred && i < formatcount ; i++)
 380       {
 381           wxDataFormat format = array[i] ;
 382
 383           switch ( format.GetType() )
 384           {
 385               case wxDF_TEXT :
 386               case wxDF_OEMTEXT :
 387               case wxDF_BITMAP :
 388               case wxDF_METAFILE :
 389               {
 390                   long len ;
 391                   char* s = (char*)wxGetClipboardData(format, &len );
 392                   if ( s )
 393                   {
 394                     data.SetData( format , len , s ) ;
 395                     delete [] s;
 396
 397                     transferred = true ;
 398                   }
 399               }
 400                             break ;
 401
 402               default :
 403                 break ;
 404           }
 405        }
 406     }
 407
 408     delete[] array ;
 409     return transferred ;
 410 }