src/gtk/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        dataobj.cpp
   3 // Purpose:     wxDataObject class
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11     #pragma implementation "dataobj.h"
  12 #endif
  13
  14 #include "wx/dataobj.h"
  15 #include "wx/app.h"
  16 #include "wx/debug.h"
  17
  18 #include "gdk/gdk.h"
  19
  20
  21 //-------------------------------------------------------------------------
  22 // global data
  23 //-------------------------------------------------------------------------
  24
  25 GdkAtom  g_textAtom        = 0;
  26
  27 //-------------------------------------------------------------------------
  28 // wxDataFormat
  29 //-------------------------------------------------------------------------
  30
  31 IMPLEMENT_CLASS(wxDataFormat, wxObject)
  32
  33 wxDataFormat::wxDataFormat()
  34 {
  35     if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE );
  36     m_type = wxDF_INVALID;
  37     m_hasAtom = FALSE;
  38     m_atom = (GdkAtom) 0;
  39 }
  40
  41 wxDataFormat::wxDataFormat( wxDataFormatId type )
  42 {
  43     if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE );
  44     SetType( type );
  45 }
  46
  47 wxDataFormat::wxDataFormat( const wxChar *id )
  48 {
  49     if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE );
  50     SetId( id );
  51 }
  52
  53 wxDataFormat::wxDataFormat( const wxString &id )
  54 {
  55     if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE );
  56     SetId( id );
  57 }
  58
  59 wxDataFormat::wxDataFormat( const wxDataFormat &format )
  60 {
  61     if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE );
  62     m_type = format.GetType();
  63     m_id = format.GetId();
  64     m_hasAtom = TRUE;
  65     m_atom = ((wxDataFormat &)format).GetAtom();    // const_cast
  66 }
  67
  68 wxDataFormat::wxDataFormat( const GdkAtom atom )
  69 {
  70     if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE );
  71     m_hasAtom = TRUE;
  72
  73     m_atom = atom;
  74
  75     if (m_atom == g_textAtom)
  76     {
  77         m_type = wxDF_TEXT;
  78     } else
  79     if (m_atom == GDK_TARGET_BITMAP)
  80     {
  81         m_type = wxDF_BITMAP;
  82     } else
  83     {
  84         m_type = wxDF_PRIVATE;
  85         m_id = gdk_atom_name( m_atom );
  86
  87         if (m_id == _T("file:ALL"))
  88         {
  89             m_type = wxDF_FILENAME;
  90         }
  91     }
  92 }
  93
  94 void wxDataFormat::SetType( wxDataFormatId type )
  95 {
  96     m_type = type;
  97
  98     if (m_type == wxDF_TEXT)
  99     {
 100         m_id = _T("STRING");
 101     }
 102     else
 103     if (m_type == wxDF_BITMAP)
 104     {
 105         m_id = _T("BITMAP");
 106     }
 107     else
 108     if (m_type == wxDF_FILENAME)
 109     {
 110         m_id = _T("file:ALL");
 111     }
 112     else
 113     {
 114        wxFAIL_MSG( _T("invalid dataformat") );
 115     }
 116
 117     m_hasAtom = FALSE;
 118 }
 119
 120 wxDataFormatId wxDataFormat::GetType() const
 121 {
 122     return m_type;
 123 }
 124
 125 wxString wxDataFormat::GetId() const
 126 {
 127     return m_id;
 128 }
 129
 130 void wxDataFormat::SetId( const wxChar *id )
 131 {
 132     m_type = wxDF_PRIVATE;
 133     m_id = id;
 134     m_hasAtom = FALSE;
 135 }
 136
 137 GdkAtom wxDataFormat::GetAtom()
 138 {
 139     if (!m_hasAtom)
 140     {
 141         m_hasAtom = TRUE;
 142
 143         if (m_type == wxDF_TEXT)
 144         {
 145             m_atom = g_textAtom;
 146         }
 147         else
 148         if (m_type == wxDF_BITMAP)
 149         {
 150             m_atom = GDK_TARGET_BITMAP;
 151         }
 152         else
 153         if (m_type == wxDF_PRIVATE)
 154         {
 155             m_atom = gdk_atom_intern( MBSTRINGCAST m_id.mbc_str(), FALSE );
 156         }
 157         else
 158         if (m_type == wxDF_FILENAME)
 159         {
 160             m_atom = gdk_atom_intern( "file:ALL", FALSE );
 161         }
 162         else
 163         {
 164             m_hasAtom = FALSE;
 165             m_atom = (GdkAtom) 0;
 166         }
 167     }
 168
 169     return m_atom;
 170 }
 171
 172 //-------------------------------------------------------------------------
 173 // wxDataBroker
 174 //-------------------------------------------------------------------------
 175
 176 IMPLEMENT_CLASS(wxDataBroker,wxObject)
 177
 178 wxDataBroker::wxDataBroker()
 179 {
 180     m_dataObjects.DeleteContents(TRUE);
 181     m_preferred = 0;
 182 }
 183
 184 void wxDataBroker::Add( wxDataObject *dataObject, bool preferred )
 185 {
 186     if (preferred) m_preferred = m_dataObjects.GetCount();
 187     m_dataObjects.Append( dataObject );
 188 }
 189
 190 size_t wxDataBroker::GetFormatCount() const
 191 {
 192     return m_dataObjects.GetCount();
 193 }
 194
 195 wxDataFormatId wxDataBroker::GetPreferredFormat() const
 196 {
 197     wxNode *node = m_dataObjects.Nth( m_preferred );
 198
 199     wxASSERT( node );
 200
 201     wxDataObject* data_obj = (wxDataObject*)node->Data();
 202
 203     return data_obj->GetFormat().GetType();
 204 }
 205
 206 wxDataFormat &wxDataBroker::GetNthFormat( size_t nth ) const
 207 {
 208     wxNode *node = m_dataObjects.Nth( nth );
 209
 210     wxASSERT( node );
 211
 212     wxDataObject* data_obj = (wxDataObject*)node->Data();
 213
 214     return data_obj->GetFormat();
 215 }
 216
 217 bool wxDataBroker::IsSupportedFormat( wxDataFormat &format ) const
 218 {
 219     wxNode *node = m_dataObjects.First();
 220     while (node)
 221     {
 222         wxDataObject *dobj = (wxDataObject*)node->Data();
 223
 224         if (dobj->GetFormat().GetAtom() == format.GetAtom())
 225         {
 226             return TRUE;
 227         }
 228
 229         node = node->Next();
 230     }
 231
 232     return FALSE;
 233 }
 234
 235 size_t wxDataBroker::GetSize( wxDataFormat& format ) const
 236 {
 237     wxNode *node = m_dataObjects.First();
 238     while (node)
 239     {
 240         wxDataObject *dobj = (wxDataObject*)node->Data();
 241
 242         if (dobj->GetFormat().GetAtom() == format.GetAtom())
 243         {
 244             return dobj->GetSize();
 245         }
 246
 247         node = node->Next();
 248     }
 249
 250     return 0;
 251 }
 252
 253 void wxDataBroker::WriteData( wxDataFormat& format, void *dest ) const
 254 {
 255     wxNode *node = m_dataObjects.First();
 256     while (node)
 257     {
 258         wxDataObject *dobj = (wxDataObject*)node->Data();
 259
 260         if (dobj->GetFormat().GetAtom() == format.GetAtom())
 261         {
 262             dobj->WriteData( dest );
 263         }
 264
 265         node = node->Next();
 266     }
 267 }
 268
 269 //-------------------------------------------------------------------------
 270 // wxDataObject
 271 //-------------------------------------------------------------------------
 272
 273 IMPLEMENT_ABSTRACT_CLASS( wxDataObject, wxObject )
 274
 275 wxDataObject::wxDataObject()
 276 {
 277 }
 278
 279 wxDataObject::~wxDataObject()
 280 {
 281 }
 282
 283 wxDataFormat &wxDataObject::GetFormat()
 284 {
 285     return m_format;
 286 }
 287
 288 wxDataFormatId wxDataObject::GetFormatType() const
 289 {
 290     return m_format.GetType();
 291 }
 292
 293 wxString wxDataObject::GetFormatId() const
 294 {
 295     return m_format.GetId();
 296 }
 297
 298 GdkAtom wxDataObject::GetFormatAtom() const
 299 {
 300     GdkAtom ret = ((wxDataObject*) this)->m_format.GetAtom();
 301     return ret;
 302 }
 303
 304 // ----------------------------------------------------------------------------
 305 // wxTextDataObject
 306 // ----------------------------------------------------------------------------
 307
 308 IMPLEMENT_DYNAMIC_CLASS( wxTextDataObject, wxDataObject )
 309
 310 wxTextDataObject::wxTextDataObject()
 311 {
 312     m_format.SetType( wxDF_TEXT );
 313 }
 314
 315 wxTextDataObject::wxTextDataObject( const wxString& data )
 316 {
 317     m_format.SetType( wxDF_TEXT );
 318
 319     m_data = data;
 320 }
 321
 322 void wxTextDataObject::SetText( const wxString& data )
 323 {
 324     m_data = data;
 325 }
 326
 327 wxString wxTextDataObject::GetText() const
 328 {
 329     return m_data;
 330 }
 331
 332 void wxTextDataObject::WriteData( void *dest ) const
 333 {
 334     WriteString( m_data, dest );
 335 }
 336
 337 size_t wxTextDataObject::GetSize() const
 338 {
 339     return m_data.Len() + 1;
 340 }
 341
 342 void wxTextDataObject::WriteString( const wxString &str, void *dest ) const
 343 {
 344     memcpy( dest, str.mb_str(), str.Len()+1 );
 345 }
 346
 347 // ----------------------------------------------------------------------------
 348 // wxFileDataObject
 349 // ----------------------------------------------------------------------------
 350
 351 IMPLEMENT_DYNAMIC_CLASS( wxFileDataObject, wxDataObject )
 352
 353 wxFileDataObject::wxFileDataObject()
 354 {
 355     m_format.SetType( wxDF_FILENAME );
 356 }
 357
 358 void wxFileDataObject::AddFile( const wxString &file )
 359 {
 360     m_files += file;
 361     m_files += (wxChar)0;
 362 }
 363
 364 wxString wxFileDataObject::GetFiles() const
 365 {
 366     return m_files;
 367 }
 368
 369 void wxFileDataObject::WriteData( void *dest ) const
 370 {
 371     memcpy( dest, m_files.mbc_str(), GetSize() );
 372 }
 373
 374 size_t wxFileDataObject::GetSize() const
 375 {
 376     return m_files.Len() + 1;
 377 }
 378
 379 // ----------------------------------------------------------------------------
 380 // wxBitmapDataObject
 381 // ----------------------------------------------------------------------------
 382
 383 IMPLEMENT_DYNAMIC_CLASS( wxBitmapDataObject, wxDataObject )
 384
 385 wxBitmapDataObject::wxBitmapDataObject()
 386 {
 387     m_format.SetType( wxDF_BITMAP );
 388 }
 389
 390 wxBitmapDataObject::wxBitmapDataObject( const wxBitmap& bitmap )
 391 {
 392     m_format.SetType( wxDF_BITMAP );
 393
 394     m_bitmap = bitmap;
 395 }
 396
 397 void wxBitmapDataObject::SetBitmap( const wxBitmap &bitmap )
 398 {
 399     m_bitmap = bitmap;
 400 }
 401
 402 wxBitmap wxBitmapDataObject::GetBitmap() const
 403 {
 404     return m_bitmap;
 405 }
 406
 407 void wxBitmapDataObject::WriteData( void *dest ) const
 408 {
 409     WriteBitmap( m_bitmap, dest );
 410 }
 411
 412 size_t wxBitmapDataObject::GetSize() const
 413 {
 414     return 0;
 415 }
 416
 417 void wxBitmapDataObject::WriteBitmap( const wxBitmap &bitmap, void *dest ) const
 418 {
 419     memcpy( dest, m_bitmap.GetPixmap(), GetSize() );
 420 }
 421
 422 // ----------------------------------------------------------------------------
 423 // wxPrivateDataObject
 424 // ----------------------------------------------------------------------------
 425
 426 IMPLEMENT_DYNAMIC_CLASS( wxPrivateDataObject, wxDataObject )
 427
 428 void wxPrivateDataObject::Free()
 429 {
 430     if ( m_data )
 431         free(m_data);
 432 }
 433
 434 wxPrivateDataObject::wxPrivateDataObject()
 435 {
 436     wxString id = _T("application/");
 437     id += wxTheApp->GetAppName();
 438
 439     m_format.SetId( id );
 440
 441     m_size = 0;
 442     m_data = (void *)NULL;
 443 }
 444
 445 void wxPrivateDataObject::SetData( const void *data, size_t size )
 446 {
 447     Free();
 448
 449     m_size = size;
 450     m_data = malloc(size);
 451
 452     memcpy( m_data, data, size );
 453 }
 454
 455 void wxPrivateDataObject::WriteData( void *dest ) const
 456 {
 457     WriteData( m_data, dest );
 458 }
 459
 460 size_t wxPrivateDataObject::GetSize() const
 461 {
 462     return m_size;
 463 }
 464
 465 void wxPrivateDataObject::WriteData( const void *data, void *dest ) const
 466 {
 467     memcpy( dest, data, GetSize() );
 468 }
 469