| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: gtk/clipbrd.cpp |
| 3 | // Purpose: |
| 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 "clipbrd.h" |
| 12 | #endif |
| 13 | |
| 14 | #include "wx/clipbrd.h" |
| 15 | |
| 16 | #if wxUSE_CLIPBOARD |
| 17 | |
| 18 | #include "wx/dataobj.h" |
| 19 | #include "wx/utils.h" |
| 20 | #include "wx/log.h" |
| 21 | |
| 22 | #include <glib.h> |
| 23 | #include <gdk/gdk.h> |
| 24 | #include <gtk/gtk.h> |
| 25 | |
| 26 | //----------------------------------------------------------------------------- |
| 27 | // thread system |
| 28 | //----------------------------------------------------------------------------- |
| 29 | |
| 30 | #if wxUSE_THREADS |
| 31 | extern void wxapp_install_thread_wakeup(); |
| 32 | extern void wxapp_uninstall_thread_wakeup(); |
| 33 | #endif |
| 34 | |
| 35 | //----------------------------------------------------------------------------- |
| 36 | // data |
| 37 | //----------------------------------------------------------------------------- |
| 38 | |
| 39 | GdkAtom g_clipboardAtom = 0; |
| 40 | GdkAtom g_targetsAtom = 0; |
| 41 | |
| 42 | // the trace mask we use with wxLogTrace() - call |
| 43 | // wxLog::AddTraceMask(TRACE_CLIPBOARD) to enable the trace messages from here |
| 44 | // (there will be a *lot* of them!) |
| 45 | static const wxChar *TRACE_CLIPBOARD = _T("clipboard"); |
| 46 | |
| 47 | //----------------------------------------------------------------------------- |
| 48 | // reminder |
| 49 | //----------------------------------------------------------------------------- |
| 50 | |
| 51 | /* The contents of a selection are returned in a GtkSelectionData |
| 52 | structure. selection/target identify the request. |
| 53 | type specifies the type of the return; if length < 0, and |
| 54 | the data should be ignored. This structure has object semantics - |
| 55 | no fields should be modified directly, they should not be created |
| 56 | directly, and pointers to them should not be stored beyond the duration of |
| 57 | a callback. (If the last is changed, we'll need to add reference |
| 58 | counting) |
| 59 | |
| 60 | struct _GtkSelectionData |
| 61 | { |
| 62 | GdkAtom selection; |
| 63 | GdkAtom target; |
| 64 | GdkAtom type; |
| 65 | gint format; |
| 66 | guchar *data; |
| 67 | gint length; |
| 68 | }; |
| 69 | |
| 70 | */ |
| 71 | |
| 72 | //----------------------------------------------------------------------------- |
| 73 | // "selection_received" for targets |
| 74 | //----------------------------------------------------------------------------- |
| 75 | |
| 76 | static void |
| 77 | targets_selection_received( GtkWidget *WXUNUSED(widget), |
| 78 | GtkSelectionData *selection_data, |
| 79 | #if (GTK_MINOR_VERSION > 0) |
| 80 | guint32 WXUNUSED(time), |
| 81 | #endif |
| 82 | wxClipboard *clipboard ) |
| 83 | { |
| 84 | if ( wxTheClipboard && selection_data->length > 0 ) |
| 85 | { |
| 86 | /* make sure we got the data in the correct form */ |
| 87 | GdkAtom type = selection_data->type; |
| 88 | if ( type != GDK_SELECTION_TYPE_ATOM ) |
| 89 | { |
| 90 | if ( strcmp(gdk_atom_name(type), "TARGETS") ) |
| 91 | { |
| 92 | wxLogTrace( TRACE_CLIPBOARD, |
| 93 | _T("got unsupported clipboard target") ); |
| 94 | |
| 95 | clipboard->m_waiting = FALSE; |
| 96 | return; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | #ifdef __WXDEBUG__ |
| 101 | wxDataFormat clip( selection_data->selection ); |
| 102 | wxLogTrace( TRACE_CLIPBOARD, |
| 103 | wxT("selection received for targets, clipboard %s"), |
| 104 | clip.GetId().c_str() ); |
| 105 | #endif // __WXDEBUG__ |
| 106 | |
| 107 | // the atoms we received, holding a list of targets (= formats) |
| 108 | GdkAtom *atoms = (GdkAtom *)selection_data->data; |
| 109 | |
| 110 | for (unsigned int i=0; i<selection_data->length/sizeof(GdkAtom); i++) |
| 111 | { |
| 112 | wxDataFormat format( atoms[i] ); |
| 113 | |
| 114 | wxLogTrace( TRACE_CLIPBOARD, |
| 115 | wxT("selection received for targets, format %s"), |
| 116 | format.GetId().c_str() ); |
| 117 | |
| 118 | if (format == clipboard->m_targetRequested) |
| 119 | { |
| 120 | clipboard->m_waiting = FALSE; |
| 121 | clipboard->m_formatSupported = TRUE; |
| 122 | return; |
| 123 | } |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | clipboard->m_waiting = FALSE; |
| 128 | } |
| 129 | |
| 130 | //----------------------------------------------------------------------------- |
| 131 | // "selection_received" for the actual data |
| 132 | //----------------------------------------------------------------------------- |
| 133 | |
| 134 | static void |
| 135 | selection_received( GtkWidget *WXUNUSED(widget), |
| 136 | GtkSelectionData *selection_data, |
| 137 | #if (GTK_MINOR_VERSION > 0) |
| 138 | guint32 WXUNUSED(time), |
| 139 | #endif |
| 140 | wxClipboard *clipboard ) |
| 141 | { |
| 142 | if (!wxTheClipboard) |
| 143 | { |
| 144 | clipboard->m_waiting = FALSE; |
| 145 | return; |
| 146 | } |
| 147 | |
| 148 | wxDataObject *data_object = clipboard->m_receivedData; |
| 149 | |
| 150 | if (!data_object) |
| 151 | { |
| 152 | clipboard->m_waiting = FALSE; |
| 153 | return; |
| 154 | } |
| 155 | |
| 156 | if (selection_data->length <= 0) |
| 157 | { |
| 158 | clipboard->m_waiting = FALSE; |
| 159 | return; |
| 160 | } |
| 161 | |
| 162 | wxDataFormat format( selection_data->target ); |
| 163 | |
| 164 | /* make sure we got the data in the correct format */ |
| 165 | if (!data_object->IsSupportedFormat( format ) ) |
| 166 | { |
| 167 | clipboard->m_waiting = FALSE; |
| 168 | return; |
| 169 | } |
| 170 | |
| 171 | /* make sure we got the data in the correct form (selection type). |
| 172 | if so, copy data to target object */ |
| 173 | if (selection_data->type != GDK_SELECTION_TYPE_STRING) |
| 174 | { |
| 175 | clipboard->m_waiting = FALSE; |
| 176 | return; |
| 177 | } |
| 178 | |
| 179 | data_object->SetData( format, (size_t) selection_data->length, (const char*) selection_data->data ); |
| 180 | |
| 181 | wxTheClipboard->m_formatSupported = TRUE; |
| 182 | clipboard->m_waiting = FALSE; |
| 183 | } |
| 184 | |
| 185 | //----------------------------------------------------------------------------- |
| 186 | // "selection_clear" |
| 187 | //----------------------------------------------------------------------------- |
| 188 | |
| 189 | static gint |
| 190 | selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event ) |
| 191 | { |
| 192 | if (!wxTheClipboard) return TRUE; |
| 193 | |
| 194 | if (event->selection == GDK_SELECTION_PRIMARY) |
| 195 | { |
| 196 | wxTheClipboard->m_ownsPrimarySelection = FALSE; |
| 197 | } |
| 198 | else |
| 199 | if (event->selection == g_clipboardAtom) |
| 200 | { |
| 201 | wxTheClipboard->m_ownsClipboard = FALSE; |
| 202 | } |
| 203 | else |
| 204 | { |
| 205 | wxTheClipboard->m_waiting = FALSE; |
| 206 | return FALSE; |
| 207 | } |
| 208 | |
| 209 | if ((!wxTheClipboard->m_ownsPrimarySelection) && |
| 210 | (!wxTheClipboard->m_ownsClipboard)) |
| 211 | { |
| 212 | /* the clipboard is no longer in our hands. we can the delete clipboard data. */ |
| 213 | if (wxTheClipboard->m_data) |
| 214 | { |
| 215 | wxLogDebug( wxT("wxClipboard will get cleared" ) ); |
| 216 | |
| 217 | delete wxTheClipboard->m_data; |
| 218 | wxTheClipboard->m_data = (wxDataObject*) NULL; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | wxTheClipboard->m_waiting = FALSE; |
| 223 | return TRUE; |
| 224 | } |
| 225 | |
| 226 | //----------------------------------------------------------------------------- |
| 227 | // selection handler for supplying data |
| 228 | //----------------------------------------------------------------------------- |
| 229 | |
| 230 | static void |
| 231 | selection_handler( GtkWidget *WXUNUSED(widget), |
| 232 | GtkSelectionData *selection_data, |
| 233 | guint WXUNUSED(info), |
| 234 | guint WXUNUSED(time), |
| 235 | gpointer WXUNUSED(data) ) |
| 236 | { |
| 237 | if (!wxTheClipboard) return; |
| 238 | |
| 239 | if (!wxTheClipboard->m_data) return; |
| 240 | |
| 241 | wxDataObject *data = wxTheClipboard->m_data; |
| 242 | |
| 243 | wxDataFormat format( selection_data->target ); |
| 244 | |
| 245 | if (!data->IsSupportedFormat( format )) return; |
| 246 | |
| 247 | /* this will fail for composite formats */ |
| 248 | if (format.GetType() == wxDF_TEXT) |
| 249 | { |
| 250 | wxTextDataObject *text_object = (wxTextDataObject*) data; |
| 251 | wxString text( text_object->GetText() ); |
| 252 | |
| 253 | #if wxUSE_UNICODE |
| 254 | const wxWX2MBbuf s = text.mbc_str(); |
| 255 | int len = strlen(s); |
| 256 | #else // more efficient in non-Unicode |
| 257 | const char *s = text.c_str(); |
| 258 | int len = (int) text.Length(); |
| 259 | #endif |
| 260 | gtk_selection_data_set( |
| 261 | selection_data, |
| 262 | GDK_SELECTION_TYPE_STRING, |
| 263 | 8*sizeof(gchar), |
| 264 | (unsigned char*) (const char*) s, |
| 265 | len ); |
| 266 | |
| 267 | return; |
| 268 | } |
| 269 | |
| 270 | int size = data->GetDataSize( format ); |
| 271 | |
| 272 | if (size == 0) return; |
| 273 | |
| 274 | char *d = new char[size]; |
| 275 | |
| 276 | data->GetDataHere( selection_data->target, (void*) d ); |
| 277 | |
| 278 | gtk_selection_data_set( |
| 279 | selection_data, |
| 280 | GDK_SELECTION_TYPE_STRING, |
| 281 | 8*sizeof(gchar), |
| 282 | (unsigned char*) d, |
| 283 | size ); |
| 284 | } |
| 285 | |
| 286 | //----------------------------------------------------------------------------- |
| 287 | // wxClipboard |
| 288 | //----------------------------------------------------------------------------- |
| 289 | |
| 290 | IMPLEMENT_DYNAMIC_CLASS(wxClipboard,wxObject) |
| 291 | |
| 292 | wxClipboard::wxClipboard() |
| 293 | { |
| 294 | m_open = FALSE; |
| 295 | |
| 296 | m_ownsClipboard = FALSE; |
| 297 | m_ownsPrimarySelection = FALSE; |
| 298 | |
| 299 | m_data = (wxDataObject*) NULL; |
| 300 | m_receivedData = (wxDataObject*) NULL; |
| 301 | |
| 302 | /* we use m_targetsWidget to query what formats are available */ |
| 303 | |
| 304 | m_targetsWidget = gtk_window_new( GTK_WINDOW_POPUP ); |
| 305 | gtk_widget_realize( m_targetsWidget ); |
| 306 | |
| 307 | gtk_signal_connect( GTK_OBJECT(m_targetsWidget), |
| 308 | "selection_received", |
| 309 | GTK_SIGNAL_FUNC( targets_selection_received ), |
| 310 | (gpointer) this ); |
| 311 | |
| 312 | /* we use m_clipboardWidget to get and to offer data */ |
| 313 | |
| 314 | m_clipboardWidget = gtk_window_new( GTK_WINDOW_POPUP ); |
| 315 | gtk_widget_realize( m_clipboardWidget ); |
| 316 | |
| 317 | gtk_signal_connect( GTK_OBJECT(m_clipboardWidget), |
| 318 | "selection_received", |
| 319 | GTK_SIGNAL_FUNC( selection_received ), |
| 320 | (gpointer) this ); |
| 321 | |
| 322 | gtk_signal_connect( GTK_OBJECT(m_clipboardWidget), |
| 323 | "selection_clear_event", |
| 324 | GTK_SIGNAL_FUNC( selection_clear_clip ), |
| 325 | (gpointer) NULL ); |
| 326 | |
| 327 | if (!g_clipboardAtom) g_clipboardAtom = gdk_atom_intern( "CLIPBOARD", FALSE ); |
| 328 | if (!g_targetsAtom) g_targetsAtom = gdk_atom_intern ("TARGETS", FALSE); |
| 329 | |
| 330 | m_formatSupported = FALSE; |
| 331 | m_targetRequested = 0; |
| 332 | |
| 333 | m_usePrimary = FALSE; |
| 334 | } |
| 335 | |
| 336 | wxClipboard::~wxClipboard() |
| 337 | { |
| 338 | Clear(); |
| 339 | |
| 340 | if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget ); |
| 341 | if (m_targetsWidget) gtk_widget_destroy( m_targetsWidget ); |
| 342 | } |
| 343 | |
| 344 | void wxClipboard::Clear() |
| 345 | { |
| 346 | if (m_data) |
| 347 | { |
| 348 | #if wxUSE_THREADS |
| 349 | /* disable GUI threads */ |
| 350 | wxapp_uninstall_thread_wakeup(); |
| 351 | #endif |
| 352 | |
| 353 | /* As we have data we also own the clipboard. Once we no longer own |
| 354 | it, clear_selection is called which will set m_data to zero */ |
| 355 | if (gdk_selection_owner_get( g_clipboardAtom ) == m_clipboardWidget->window) |
| 356 | { |
| 357 | m_waiting = TRUE; |
| 358 | |
| 359 | gtk_selection_owner_set( (GtkWidget*) NULL, g_clipboardAtom, |
| 360 | (guint32) GDK_CURRENT_TIME ); |
| 361 | |
| 362 | while (m_waiting) gtk_main_iteration(); |
| 363 | } |
| 364 | |
| 365 | if (gdk_selection_owner_get( GDK_SELECTION_PRIMARY ) == m_clipboardWidget->window) |
| 366 | { |
| 367 | m_waiting = TRUE; |
| 368 | |
| 369 | gtk_selection_owner_set( (GtkWidget*) NULL, GDK_SELECTION_PRIMARY, |
| 370 | (guint32) GDK_CURRENT_TIME ); |
| 371 | |
| 372 | while (m_waiting) gtk_main_iteration(); |
| 373 | } |
| 374 | |
| 375 | if (m_data) |
| 376 | { |
| 377 | delete m_data; |
| 378 | m_data = (wxDataObject*) NULL; |
| 379 | } |
| 380 | |
| 381 | #if wxUSE_THREADS |
| 382 | /* re-enable GUI threads */ |
| 383 | wxapp_install_thread_wakeup(); |
| 384 | #endif |
| 385 | } |
| 386 | |
| 387 | m_targetRequested = 0; |
| 388 | m_formatSupported = FALSE; |
| 389 | } |
| 390 | |
| 391 | bool wxClipboard::Open() |
| 392 | { |
| 393 | wxCHECK_MSG( !m_open, FALSE, wxT("clipboard already open") ); |
| 394 | |
| 395 | m_open = TRUE; |
| 396 | |
| 397 | return TRUE; |
| 398 | } |
| 399 | |
| 400 | bool wxClipboard::SetData( wxDataObject *data ) |
| 401 | { |
| 402 | wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") ); |
| 403 | |
| 404 | wxCHECK_MSG( data, FALSE, wxT("data is invalid") ); |
| 405 | |
| 406 | Clear(); |
| 407 | |
| 408 | return AddData( data ); |
| 409 | } |
| 410 | |
| 411 | bool wxClipboard::AddData( wxDataObject *data ) |
| 412 | { |
| 413 | wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") ); |
| 414 | |
| 415 | wxCHECK_MSG( data, FALSE, wxT("data is invalid") ); |
| 416 | |
| 417 | /* we can only store one wxDataObject */ |
| 418 | Clear(); |
| 419 | |
| 420 | m_data = data; |
| 421 | |
| 422 | /* get formats from wxDataObjects */ |
| 423 | wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ]; |
| 424 | m_data->GetAllFormats( array ); |
| 425 | |
| 426 | /* primary selection or clipboard */ |
| 427 | GdkAtom clipboard = m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY |
| 428 | : g_clipboardAtom; |
| 429 | |
| 430 | |
| 431 | for (size_t i = 0; i < m_data->GetFormatCount(); i++) |
| 432 | { |
| 433 | wxLogTrace( TRACE_CLIPBOARD, |
| 434 | wxT("wxClipboard now supports atom %s"), |
| 435 | array[i].GetId().c_str() ); |
| 436 | |
| 437 | gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget), |
| 438 | clipboard, |
| 439 | array[i], |
| 440 | 0 ); /* what is info ? */ |
| 441 | } |
| 442 | |
| 443 | delete[] array; |
| 444 | |
| 445 | gtk_signal_connect( GTK_OBJECT(m_clipboardWidget), |
| 446 | "selection_get", |
| 447 | GTK_SIGNAL_FUNC(selection_handler), |
| 448 | (gpointer) NULL ); |
| 449 | |
| 450 | #if wxUSE_THREADS |
| 451 | /* disable GUI threads */ |
| 452 | wxapp_uninstall_thread_wakeup(); |
| 453 | #endif |
| 454 | |
| 455 | /* Tell the world we offer clipboard data */ |
| 456 | bool res = (gtk_selection_owner_set( m_clipboardWidget, |
| 457 | clipboard, |
| 458 | (guint32) GDK_CURRENT_TIME )); |
| 459 | |
| 460 | if (m_usePrimary) |
| 461 | m_ownsPrimarySelection = res; |
| 462 | else |
| 463 | m_ownsClipboard = res; |
| 464 | |
| 465 | #if wxUSE_THREADS |
| 466 | /* re-enable GUI threads */ |
| 467 | wxapp_install_thread_wakeup(); |
| 468 | #endif |
| 469 | |
| 470 | return res; |
| 471 | } |
| 472 | |
| 473 | void wxClipboard::Close() |
| 474 | { |
| 475 | wxCHECK_RET( m_open, wxT("clipboard not open") ); |
| 476 | |
| 477 | m_open = FALSE; |
| 478 | } |
| 479 | |
| 480 | bool wxClipboard::IsOpened() const |
| 481 | { |
| 482 | return m_open; |
| 483 | } |
| 484 | |
| 485 | bool wxClipboard::IsSupported( const wxDataFormat& format ) |
| 486 | { |
| 487 | /* reentrance problems */ |
| 488 | if (m_waiting) return FALSE; |
| 489 | |
| 490 | /* store requested format to be asked for by callbacks */ |
| 491 | m_targetRequested = format; |
| 492 | |
| 493 | #if 0 |
| 494 | wxLogTrace( TRACE_CLIPBOARD, |
| 495 | wxT("wxClipboard:IsSupported: requested format: %s"), |
| 496 | format.GetId().c_str() ); |
| 497 | #endif |
| 498 | |
| 499 | wxCHECK_MSG( m_targetRequested, FALSE, wxT("invalid clipboard format") ); |
| 500 | |
| 501 | m_formatSupported = FALSE; |
| 502 | |
| 503 | /* perform query. this will set m_formatSupported to |
| 504 | TRUE if m_targetRequested is supported. |
| 505 | also, we have to wait for the "answer" from the |
| 506 | clipboard owner which is an asynchronous process. |
| 507 | therefore we set m_waiting = TRUE here and wait |
| 508 | until the callback "targets_selection_received" |
| 509 | sets it to FALSE */ |
| 510 | |
| 511 | m_waiting = TRUE; |
| 512 | |
| 513 | gtk_selection_convert( m_targetsWidget, |
| 514 | m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY |
| 515 | : g_clipboardAtom, |
| 516 | g_targetsAtom, |
| 517 | (guint32) GDK_CURRENT_TIME ); |
| 518 | |
| 519 | while (m_waiting) gtk_main_iteration(); |
| 520 | |
| 521 | if (!m_formatSupported) return FALSE; |
| 522 | |
| 523 | return TRUE; |
| 524 | } |
| 525 | |
| 526 | bool wxClipboard::GetData( wxDataObject& data ) |
| 527 | { |
| 528 | wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") ); |
| 529 | |
| 530 | /* get formats from wxDataObjects */ |
| 531 | wxDataFormat *array = new wxDataFormat[ data.GetFormatCount() ]; |
| 532 | data.GetAllFormats( array ); |
| 533 | |
| 534 | for (size_t i = 0; i < data.GetFormatCount(); i++) |
| 535 | { |
| 536 | wxDataFormat format( array[i] ); |
| 537 | |
| 538 | wxLogTrace( TRACE_CLIPBOARD, |
| 539 | wxT("wxClipboard::GetData: requested format: %s"), |
| 540 | format.GetId().c_str() ); |
| 541 | |
| 542 | /* is data supported by clipboard ? */ |
| 543 | |
| 544 | /* store requested format to be asked for by callbacks */ |
| 545 | m_targetRequested = format; |
| 546 | |
| 547 | wxCHECK_MSG( m_targetRequested, FALSE, wxT("invalid clipboard format") ); |
| 548 | |
| 549 | m_formatSupported = FALSE; |
| 550 | |
| 551 | /* perform query. this will set m_formatSupported to |
| 552 | TRUE if m_targetRequested is supported. |
| 553 | also, we have to wait for the "answer" from the |
| 554 | clipboard owner which is an asynchronous process. |
| 555 | therefore we set m_waiting = TRUE here and wait |
| 556 | until the callback "targets_selection_received" |
| 557 | sets it to FALSE */ |
| 558 | |
| 559 | m_waiting = TRUE; |
| 560 | |
| 561 | gtk_selection_convert( m_targetsWidget, |
| 562 | m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY |
| 563 | : g_clipboardAtom, |
| 564 | g_targetsAtom, |
| 565 | (guint32) GDK_CURRENT_TIME ); |
| 566 | |
| 567 | while (m_waiting) gtk_main_iteration(); |
| 568 | |
| 569 | if (!m_formatSupported) continue; |
| 570 | |
| 571 | /* store pointer to data object to be filled up by callbacks */ |
| 572 | m_receivedData = &data; |
| 573 | |
| 574 | /* store requested format to be asked for by callbacks */ |
| 575 | m_targetRequested = format; |
| 576 | |
| 577 | wxCHECK_MSG( m_targetRequested, FALSE, wxT("invalid clipboard format") ); |
| 578 | |
| 579 | /* start query */ |
| 580 | m_formatSupported = FALSE; |
| 581 | |
| 582 | /* ask for clipboard contents. this will set |
| 583 | m_formatSupported to TRUE if m_targetRequested |
| 584 | is supported. |
| 585 | also, we have to wait for the "answer" from the |
| 586 | clipboard owner which is an asynchronous process. |
| 587 | therefore we set m_waiting = TRUE here and wait |
| 588 | until the callback "targets_selection_received" |
| 589 | sets it to FALSE */ |
| 590 | |
| 591 | m_waiting = TRUE; |
| 592 | |
| 593 | wxLogDebug( wxT("wxClipboard::GetData: format found, start convert") ); |
| 594 | |
| 595 | gtk_selection_convert( m_clipboardWidget, |
| 596 | m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY |
| 597 | : g_clipboardAtom, |
| 598 | m_targetRequested, |
| 599 | (guint32) GDK_CURRENT_TIME ); |
| 600 | |
| 601 | while (m_waiting) gtk_main_iteration(); |
| 602 | |
| 603 | /* this is a true error as we checked for the presence of such data before */ |
| 604 | wxCHECK_MSG( m_formatSupported, FALSE, wxT("error retrieving data from clipboard") ); |
| 605 | |
| 606 | /* return success */ |
| 607 | delete[] array; |
| 608 | return TRUE; |
| 609 | } |
| 610 | |
| 611 | wxLogDebug( wxT("wxClipboard::GetData: format not found") ); |
| 612 | |
| 613 | /* return failure */ |
| 614 | delete[] array; |
| 615 | return FALSE; |
| 616 | } |
| 617 | |
| 618 | #endif |
| 619 | // wxUSE_CLIPBOARD |
| 620 | |