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[wxWidgets.git] / src / gtk1 / dnd.cpp
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: dnd.cpp
3 // Purpose: wxDropTarget 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 "dnd.h"
12 #endif
13
14 #include "wx/dnd.h"
15
16 #if wxUSE_DRAG_AND_DROP
17
18 #include "wx/window.h"
19 #include "wx/app.h"
20 #include "wx/gdicmn.h"
21 #include "wx/intl.h"
22 #include "wx/utils.h"
23
24 #include "gdk/gdk.h"
25 #include "gtk/gtk.h"
26 #include "gdk/gdkprivate.h"
27
28 #include <X11/Xlib.h>
29
30 // ----------------------------------------------------------------------------
31 // global
32 // ----------------------------------------------------------------------------
33
34 extern bool g_blockEventsOnDrag;
35
36 #ifdef NEW_GTK_DND_CODE
37
38 #include "gtk/gtkdnd.h"
39 #include "gtk/gtkselection.h"
40
41 // ----------------------------------------------------------------------------
42 // "drag_leave"
43 // ----------------------------------------------------------------------------
44
45 static void target_drag_leave( GtkWidget *WXUNUSED(widget),
46 GdkDragContext *WXUNUSED(context),
47 guint WXUNUSED(time) )
48 {
49 printf( "leave.\n" );
50 }
51
52 // ----------------------------------------------------------------------------
53 // "drag_motion"
54 // ----------------------------------------------------------------------------
55
56 static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
57 GdkDragContext *context,
58 gint WXUNUSED(x),
59 gint WXUNUSED(y),
60 guint time )
61 {
62 printf( "motion.\n" );
63 gdk_drag_status( context, context->suggested_action, time );
64 return TRUE;
65 }
66
67 // ----------------------------------------------------------------------------
68 // "drag_drop"
69 // ----------------------------------------------------------------------------
70
71 static gboolean target_drag_drop( GtkWidget *widget,
72 GdkDragContext *context,
73 gint x,
74 gint y,
75 guint time )
76 {
77 printf( "drop at: %d,%d.\n", x, y );
78
79 if (context->targets)
80 {
81 gtk_drag_get_data( widget,
82 context,
83 GPOINTER_TO_INT (context->targets->data),
84 time );
85 }
86 return FALSE;
87 }
88
89 // ----------------------------------------------------------------------------
90 // "drag_data_received"
91 // ----------------------------------------------------------------------------
92
93 static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
94 GdkDragContext *context,
95 gint x,
96 gint y,
97 GtkSelectionData *data,
98 guint WXUNUSED(info),
99 guint time )
100 {
101 printf( "data receive at: %d,%d.\n", x, y );
102
103 if ((data->length >= 0) && (data->format == 8))
104 {
105 wxString str = (const char*)data->data;
106 printf( "Received %s\n.", WXSTRINGCAST str );
107 gtk_drag_finish( context, TRUE, FALSE, time );
108 return;
109 }
110
111 gtk_drag_finish (context, FALSE, FALSE, time);
112 }
113
114 // ----------------------------------------------------------------------------
115 // wxDropTarget
116 // ----------------------------------------------------------------------------
117
118 wxDropTarget::wxDropTarget()
119 {
120 }
121
122 wxDropTarget::~wxDropTarget()
123 {
124 }
125
126 void wxDropTarget::UnregisterWidget( GtkWidget *widget )
127 {
128 wxCHECK_RET( widget != NULL, "unregister widget is NULL" );
129
130 gtk_drag_dest_set( widget,
131 (GtkDestDefaults) 0,
132 (GtkTargetEntry*) NULL,
133 0,
134 (GdkDragAction) 0 );
135
136 gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
137 GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
138
139 gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
140 GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
141
142 gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
143 GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
144
145 gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
146 GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
147 }
148
149 void wxDropTarget::RegisterWidget( GtkWidget *widget )
150 {
151 wxCHECK_RET( widget != NULL, "register widget is NULL" );
152
153 GtkTargetEntry format;
154 format.info = 0;
155 format.flags = 0;
156 char buf[100];
157
158 int valid = 0;
159 for ( size_t i = 0; i < GetFormatCount(); i++ )
160 {
161 wxDataFormat df = GetFormat( i );
162 switch (df)
163 {
164 case wxDF_TEXT:
165 format.target = "text/plain";
166 valid++;
167 break;
168 case wxDF_FILENAME:
169 format.target = "file:ALL";
170 valid++;
171 break;
172 case wxDF_PRIVATE:
173 wxPrivateDropTarget *pdt = (wxPrivateDropTarget *)this;
174 strcpy( buf, WXSTRINGCAST pdt->GetID() );
175 format.target = buf;
176 valid++;
177 default:
178 break;
179 }
180 }
181
182 wxASSERT_MSG( valid != 0, "No valid DnD format supported." );
183
184 gtk_drag_dest_set( widget,
185 GTK_DEST_DEFAULT_ALL,
186 &format,
187 1,
188 (GdkDragAction)(GDK_ACTION_COPY | GDK_ACTION_MOVE) );
189
190 gtk_signal_connect( GTK_OBJECT(widget), "drag_leave",
191 GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
192
193 gtk_signal_connect( GTK_OBJECT(widget), "drag_motion",
194 GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
195
196 gtk_signal_connect( GTK_OBJECT(widget), "drag_drop",
197 GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
198
199 gtk_signal_connect( GTK_OBJECT(widget), "drag_data_received",
200 GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
201 }
202
203 // ----------------------------------------------------------------------------
204 // wxTextDropTarget
205 // ----------------------------------------------------------------------------
206
207 bool wxTextDropTarget::OnDrop( long x, long y, const void *data, size_t WXUNUSED(size) )
208 {
209 OnDropText( x, y, (const char*)data );
210 return TRUE;
211 }
212
213 bool wxTextDropTarget::OnDropText( long x, long y, const char *psz )
214 {
215 printf( "Got dropped text: %s.\n", psz );
216 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
217 return TRUE;
218 }
219
220 size_t wxTextDropTarget::GetFormatCount() const
221 {
222 return 1;
223 }
224
225 wxDataFormat wxTextDropTarget::GetFormat(size_t WXUNUSED(n)) const
226 {
227 return wxDF_TEXT;
228 }
229
230 // ----------------------------------------------------------------------------
231 // wxFileDropTarget
232 // ----------------------------------------------------------------------------
233
234 bool wxFileDropTarget::OnDropFiles( long x, long y, size_t nFiles, const char * const aszFiles[] )
235 {
236 printf( "Got %d dropped files.\n", (int)nFiles );
237 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
238 for (size_t i = 0; i < nFiles; i++)
239 {
240 printf( aszFiles[i] );
241 printf( "\n" );
242 }
243 return TRUE;
244 }
245
246 bool wxFileDropTarget::OnDrop(long x, long y, const void *data, size_t size )
247 {
248 size_t number = 0;
249 size_t i;
250 char *text = (char*) data;
251 for (i = 0; i < size; i++)
252 if (text[i] == 0) number++;
253
254 if (number == 0) return TRUE;
255
256 char **files = new char*[number];
257
258 text = (char*) data;
259 for (i = 0; i < number; i++)
260 {
261 files[i] = text;
262 int len = strlen( text );
263 text += len+1;
264 }
265
266 bool ret = OnDropFiles( x, y, 1, files );
267
268 free( files );
269
270 return ret;
271 }
272
273 size_t wxFileDropTarget::GetFormatCount() const
274 {
275 return 1;
276 }
277
278 wxDataFormat wxFileDropTarget::GetFormat(size_t WXUNUSED(n)) const
279 {
280 return wxDF_FILENAME;
281 }
282
283 //-------------------------------------------------------------------------
284 // wxDropSource
285 //-------------------------------------------------------------------------
286
287 wxDropSource::wxDropSource( wxWindow *win )
288 {
289 g_blockEventsOnDrag = TRUE;
290
291 m_window = win;
292 m_widget = win->m_widget;
293 if (win->m_wxwindow) m_widget = win->m_wxwindow;
294
295 m_data = (wxDataObject *) NULL;
296 m_retValue = wxDragCancel;
297
298 m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
299 m_goaheadCursor = wxCursor( wxCURSOR_HAND );
300 }
301
302 wxDropSource::wxDropSource( wxDataObject &data, wxWindow *win )
303 {
304 g_blockEventsOnDrag = TRUE;
305
306 m_window = win;
307 m_widget = win->m_widget;
308 if (win->m_wxwindow) m_widget = win->m_wxwindow;
309 m_retValue = wxDragCancel;
310
311 m_data = &data;
312
313 m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
314 m_goaheadCursor = wxCursor( wxCURSOR_HAND );
315 }
316
317 void wxDropSource::SetData( wxDataObject &data )
318 {
319 m_data = &data;
320 }
321
322 wxDropSource::~wxDropSource(void)
323 {
324 // if (m_data) delete m_data;
325
326 g_blockEventsOnDrag = FALSE;
327 }
328
329 wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
330 {
331 wxASSERT_MSG( m_data, "wxDragSource: no data" );
332
333 if (!m_data) return (wxDragResult) wxDragNone;
334 if (m_data->GetDataSize() == 0) return (wxDragResult) wxDragNone;
335
336 RegisterWindow();
337
338 // TODO
339
340 UnregisterWindow();
341
342 g_blockEventsOnDrag = FALSE;
343
344 return m_retValue;
345 }
346
347 void wxDropSource::RegisterWindow(void)
348 {
349 if (!m_data) return;
350
351 wxString formats;
352
353 wxDataFormat df = m_data->GetPreferredFormat();
354
355 switch (df)
356 {
357 case wxDF_TEXT:
358 formats += "text/plain";
359 break;
360 case wxDF_FILENAME:
361 formats += "file:ALL";
362 break;
363 default:
364 break;
365 }
366
367 char *str = WXSTRINGCAST formats;
368
369 // TODO
370 }
371
372 void wxDropSource::UnregisterWindow(void)
373 {
374 if (!m_widget) return;
375
376 // TODO
377 }
378
379
380 #else // NEW_CODE
381
382 GtkWidget *shape_create_icon (char **data,
383 gint x,
384 gint y,
385 gint px,
386 gint py,
387 gint window_type);
388
389 /* XPM */
390 static char * gv_xpm[] = {
391 "40 34 3 1",
392 " s None c None",
393 ". c black",
394 "X c white",
395 " ",
396 " ",
397 " ...... ",
398 " ..XXXXXX.. ",
399 " .XXXXXXXXXX. ",
400 " .XXXXXXXXXXXX. ",
401 " .XXXXXXXXXXXX. ",
402 " .XXXXXXXXXXXXXX. ",
403 " .XXX..XXXX..XXX. ",
404 " ....XX....XX....XX. ",
405 " .XXX.XXX..XXXX..XXX.... ",
406 " .XXXXXXXXXXXXXXXXXXX.XXX. ",
407 " .XXXXXXXXXXXXXXXXXXXXXXXX. ",
408 " .XXXXXXXXXXXXXXXXXXXXXXXX. ",
409 " ..XXXXXXXXXXXXXXXXXXXXXX. ",
410 " .XXXXXXXXXXXXXXXXXX... ",
411 " ..XXXXXXXXXXXXXXXX. ",
412 " .XXXXXXXXXXXXXXXX. ",
413 " .XXXXXXXXXXXXXXXX. ",
414 " .XXXXXXXXXXXXXXXXX. ",
415 " .XXXXXXXXXXXXXXXXX. ",
416 " .XXXXXXXXXXXXXXXXXX. ",
417 " .XXXXXXXXXXXXXXXXXXX. ",
418 " .XXXXXXXXXXXXXXXXXXXXX. ",
419 " .XXXXXXXXXXXXXX.XXXXXXX. ",
420 " .XXXXXXX.XXXXXXX.XXXXXXX. ",
421 " .XXXXXXXX.XXXXXXX.XXXXXXX. ",
422 " .XXXXXXX...XXXXX...XXXXX. ",
423 " .XXXXXXX. ..... ..... ",
424 " ..XXXX.. ",
425 " .... ",
426 " ",
427 " ",
428 " "};
429
430 /* XPM */
431 static char * page_xpm[] = {
432 /* width height ncolors chars_per_pixel */
433 "32 32 5 1",
434 /* colors */
435 " s None c None",
436 ". c black",
437 "X c wheat",
438 "o c tan",
439 "O c #6699FF",
440 /* pixels */
441 " ................... ",
442 " .XXXXXXXXXXXXXXXXX.. ",
443 " .XXXXXXXXXXXXXXXXX.o. ",
444 " .XXXXXXXXXXXXXXXXX.oo. ",
445 " .XXXXXXXXXXXXXXXXX.ooo. ",
446 " .XXXXXXXXXXXXXXXXX.oooo. ",
447 " .XXXXXXXXXXXXXXXXX....... ",
448 " .XXXXXOOOOOOOOOOXXXooooo. ",
449 " .XXXXXXXXXXXXXXXXXXooooo. ",
450 " .XXXXXOOOOOOOOOOXXXXXXXX. ",
451 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
452 " .XXXXXXXOOOOOOOOOXXXXXXX. ",
453 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
454 " .XXXXXXOOOOOOOOOOXXXXXXX. ",
455 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
456 " .XXXXXOOOOOOOOOOXXXXXXXX. ",
457 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
458 " .XXXXXXXOOOOOOOOOXXXXXXX. ",
459 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
460 " .XXXXXXOOOOOOOOOOXXXXXXX. ",
461 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
462 " .XXXXXOOOOOOOOOOXXXXXXXX. ",
463 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
464 " .XXXXXXOOOOOOOOOOXXXXXXX. ",
465 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
466 " .XXXXXOOOOOOOXXXXXXXXXXX. ",
467 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
468 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
469 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
470 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
471 " .XXXXXXXXXXXXXXXXXXXXXXX. ",
472 " ......................... "};
473
474
475 //-----------------------------------------------------------------------------
476 // globals
477 //-----------------------------------------------------------------------------
478
479 wxDropSource *gs_currentDropSource = (wxDropSource*) NULL;
480
481 //-----------------------------------------------------------------------------
482 // "drop_enter_event"
483 //-----------------------------------------------------------------------------
484
485 static void gtk_target_enter_callback( GtkWidget *WXUNUSED(widget),
486 GdkEventDropEnter *WXUNUSED(event),
487 wxDropTarget *target )
488 {
489 if (target)
490 target->OnEnter();
491 }
492
493 //-----------------------------------------------------------------------------
494 // "drop_leave_event"
495 //-----------------------------------------------------------------------------
496
497 static void gtk_target_leave_callback( GtkWidget *WXUNUSED(widget),
498 GdkEventDropLeave *WXUNUSED(event),
499 wxDropTarget *target )
500 {
501 if (target)
502 target->OnLeave();
503 }
504
505 //-----------------------------------------------------------------------------
506 // "drop_data_available_event"
507 //-----------------------------------------------------------------------------
508
509 static void gtk_target_callback( GtkWidget *widget,
510 GdkEventDropDataAvailable *event,
511 wxDropTarget *target )
512 {
513 if (target)
514 {
515 int x = 0;
516 int y = 0;
517 gdk_window_get_pointer( widget->window, &x, &y, (GdkModifierType *) NULL );
518 /*
519 printf( "Drop data is of type %s.\n", event->data_type );
520 */
521 target->OnDrop( x, y, (const void*)event->data, (size_t)event->data_numbytes );
522 }
523
524 /*
525 g_free (event->data);
526 g_free (event->data_type);
527 */
528 }
529
530 // ----------------------------------------------------------------------------
531 // wxDropTarget
532 // ----------------------------------------------------------------------------
533
534 wxDropTarget::wxDropTarget()
535 {
536 m_format = (wxDataFormat*) NULL;
537 }
538
539 wxDropTarget::~wxDropTarget()
540 {
541 if (m_format) delete m_format;
542 }
543
544 wxDataFormat &wxDropTarget::GetFormat(size_t n) const
545 {
546 return (*m_format);
547 }
548
549 void wxDropTarget::UnregisterWidget( GtkWidget *widget )
550 {
551 if (!widget) return;
552
553 gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
554 GTK_SIGNAL_FUNC(gtk_target_callback), (gpointer) this );
555
556 gtk_widget_dnd_drop_set( widget, FALSE, (gchar **) NULL, 0, FALSE );
557 }
558
559 void wxDropTarget::RegisterWidget( GtkWidget *widget )
560 {
561 wxString formats;
562 int valid = 0;
563
564 for ( size_t i = 0; i < GetFormatCount(); i++ )
565 {
566 switch (GetFormat(i).GetType())
567 {
568 case wxDF_TEXT:
569 {
570 if (i > 0) formats += ";";
571 formats += "text/plain";
572 valid++;
573 break;
574 }
575 case wxDF_FILENAME:
576 {
577 if (i > 0) formats += ";";
578 formats += "file:ALL";
579 valid++;
580 break;
581 }
582 case wxDF_PRIVATE:
583 {
584 if (i > 0) formats += ";";
585 wxPrivateDropTarget *pdt = (wxPrivateDropTarget *)this;
586 formats += pdt->GetId();
587 valid++;
588 break;
589 }
590 default:
591 break;
592 }
593 }
594
595 char *str = WXSTRINGCAST formats;
596
597 gtk_widget_dnd_drop_set( widget, TRUE, &str, valid, FALSE );
598
599 gtk_signal_connect( GTK_OBJECT(widget), "drop_data_available_event",
600 GTK_SIGNAL_FUNC(gtk_target_callback), (gpointer) this );
601
602 gtk_signal_connect( GTK_OBJECT(widget), "drop_enter_event",
603 GTK_SIGNAL_FUNC(gtk_target_enter_callback), (gpointer) this );
604
605 gtk_signal_connect( GTK_OBJECT(widget), "drop_leave_event",
606 GTK_SIGNAL_FUNC(gtk_target_leave_callback), (gpointer) this );
607 }
608
609 // ----------------------------------------------------------------------------
610 // wxTextDropTarget
611 // ----------------------------------------------------------------------------
612
613 wxTextDropTarget::wxTextDropTarget()
614 {
615 m_format = new wxDataFormat( wxDF_TEXT );
616 }
617
618 bool wxTextDropTarget::OnDrop( long x, long y, const void *data, size_t WXUNUSED(size) )
619 {
620 OnDropText( x, y, (const char*)data );
621 return TRUE;
622 }
623
624 bool wxTextDropTarget::OnDropText( long x, long y, const char *psz )
625 {
626 /*
627 printf( "Got dropped text: %s.\n", psz );
628 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
629 */
630 return TRUE;
631 }
632
633 size_t wxTextDropTarget::GetFormatCount() const
634 {
635 return 1;
636 }
637
638 // ----------------------------------------------------------------------------
639 // wxPrivateDropTarget
640 // ----------------------------------------------------------------------------
641
642 wxPrivateDropTarget::wxPrivateDropTarget()
643 {
644 m_id = wxTheApp->GetAppName();
645 m_format = new wxDataFormat( m_id );
646 }
647
648 void wxPrivateDropTarget::SetId( const wxString& id )
649 {
650 m_id = id;
651 m_format->SetId( id );
652 }
653
654 size_t wxPrivateDropTarget::GetFormatCount() const
655 {
656 return 1;
657 }
658
659 // ----------------------------------------------------------------------------
660 // wxFileDropTarget
661 // ----------------------------------------------------------------------------
662
663 wxFileDropTarget::wxFileDropTarget()
664 {
665 m_format = new wxDataFormat( wxDF_FILENAME );
666 }
667
668 bool wxFileDropTarget::OnDropFiles( long x, long y, size_t nFiles, const char * const aszFiles[] )
669 {
670 printf( "Got %d dropped files.\n", (int)nFiles );
671 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
672
673 for (size_t i = 0; i < nFiles; i++)
674 {
675 printf( aszFiles[i] );
676 printf( "\n" );
677 }
678
679 return TRUE;
680 }
681
682 bool wxFileDropTarget::OnDrop(long x, long y, const void *data, size_t size )
683 {
684 size_t number = 0;
685 size_t i;
686 char *text = (char*) data;
687 for ( i = 0; i < size; i++)
688 if (text[i] == 0) number++;
689
690 if (number == 0) return TRUE;
691
692 char **files = new char*[number];
693
694 text = (char*) data;
695 for (i = 0; i < number; i++)
696 {
697 files[i] = text;
698 int len = strlen( text );
699 text += len+1;
700 }
701
702 bool ret = OnDropFiles( x, y, 1, files );
703
704 free( files );
705
706 return ret;
707 }
708
709 size_t wxFileDropTarget::GetFormatCount() const
710 {
711 return 1;
712 }
713
714 //-------------------------------------------------------------------------
715 // wxDropSource
716 //-------------------------------------------------------------------------
717
718 static void
719 shape_motion (GtkWidget *widget,
720 GdkEventMotion * /*event*/);
721
722 //-----------------------------------------------------------------------------
723 // "drag_request_event"
724 //-----------------------------------------------------------------------------
725
726 void gtk_drag_callback( GtkWidget *widget, GdkEventDragRequest *event, wxDropSource *source )
727 {
728 wxDataBroker *data = source->m_data;
729
730 if (!data) return;
731
732 wxNode *node = data->m_dataObjects.First();
733 {
734 wxDataObject *dobj = (wxDataObject*) node->Data();
735
736 if ((strcmp(event->data_type,"file:ALL") == 0) &&
737 (dobj->GetFormat().GetType() == wxDF_FILENAME))
738 {
739 wxFileDataObject *file_object = (wxFileDataObject*) dobj;
740
741 wxString text = file_object->GetFiles();
742
743 char *s = WXSTRINGCAST text;
744
745 gtk_widget_dnd_data_set( widget,
746 (GdkEvent*)event,
747 (unsigned char*) s,
748 (int) text.Length()+1 );
749
750 source->m_retValue = wxDragCopy;
751
752 return;
753 }
754
755 if ((strcmp(event->data_type,"text/plain") == 0) &&
756 (dobj->GetFormat().GetType() == wxDF_TEXT))
757 {
758 wxTextDataObject *text_object = (wxTextDataObject*) dobj;
759
760 wxString text = text_object->GetText();
761
762 char *s = WXSTRINGCAST text;
763
764 gtk_widget_dnd_data_set( widget,
765 (GdkEvent*)event,
766 (unsigned char*) s,
767 (int) text.Length()+1 );
768
769 source->m_retValue = wxDragCopy;
770
771 return;
772 }
773
774 if (dobj->GetFormat().GetType() == wxDF_PRIVATE)
775 {
776 wxPrivateDataObject *pdo = (wxPrivateDataObject*) dobj;
777
778 if (pdo->GetId() == event->data_type)
779 {
780 gtk_widget_dnd_data_set( widget,
781 (GdkEvent*)event,
782 (unsigned char*) pdo->GetData(),
783 (int) pdo->GetSize() );
784
785 source->m_retValue = wxDragCopy;
786
787 return;
788 }
789 }
790
791 node = node->Next();
792 }
793 }
794
795 wxDropSource::wxDropSource( wxWindow *win )
796 {
797 g_blockEventsOnDrag = TRUE;
798
799 m_window = win;
800 m_widget = win->m_widget;
801 if (win->m_wxwindow) m_widget = win->m_wxwindow;
802
803 m_data = (wxDataBroker*) NULL;
804 m_retValue = wxDragCancel;
805
806 m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
807 m_goaheadCursor = wxCursor( wxCURSOR_HAND );
808 }
809
810 wxDropSource::wxDropSource( wxDataObject *data, wxWindow *win )
811 {
812 g_blockEventsOnDrag = TRUE;
813
814 m_window = win;
815 m_widget = win->m_widget;
816 if (win->m_wxwindow) m_widget = win->m_wxwindow;
817 m_retValue = wxDragCancel;
818
819 if (data)
820 {
821 m_data = new wxDataBroker();
822 m_data->Add( data );
823 }
824 else
825 {
826 m_data = (wxDataBroker*) NULL;
827 }
828
829 m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
830 m_goaheadCursor = wxCursor( wxCURSOR_HAND );
831 }
832
833 wxDropSource::wxDropSource( wxDataBroker *data, wxWindow *win )
834 {
835 g_blockEventsOnDrag = TRUE;
836
837 m_window = win;
838 m_widget = win->m_widget;
839 if (win->m_wxwindow) m_widget = win->m_wxwindow;
840 m_retValue = wxDragCancel;
841
842 m_data = data;
843
844 m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
845 m_goaheadCursor = wxCursor( wxCURSOR_HAND );
846 }
847
848 void wxDropSource::SetData( wxDataObject *data )
849 {
850 if (m_data) delete m_data;
851
852 if (data)
853 {
854 m_data = new wxDataBroker();
855 m_data->Add( data );
856 }
857 else
858 {
859 m_data = (wxDataBroker*) NULL;
860 }
861 }
862
863 void wxDropSource::SetData( wxDataBroker *data )
864 {
865 if (m_data) delete m_data;
866
867 m_data = data;
868 }
869
870 wxDropSource::~wxDropSource(void)
871 {
872 if (m_data) delete m_data;
873
874 g_blockEventsOnDrag = FALSE;
875 }
876
877 wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
878 {
879 if (gdk_dnd.dnd_grabbed) return (wxDragResult) wxDragNone;
880 if (gdk_dnd.drag_really) return (wxDragResult) wxDragNone;
881
882 wxASSERT_MSG( m_data, "wxDragSource: no data" );
883
884 if (!m_data) return (wxDragResult) wxDragNone;
885
886 static GtkWidget *drag_icon = (GtkWidget*) NULL;
887 static GtkWidget *drop_icon = (GtkWidget*) NULL;
888
889 GdkPoint hotspot_1 = {0,-5 };
890
891 if (!drag_icon)
892 {
893 drag_icon = shape_create_icon ( gv_xpm,
894 440, 140, 0,0, GTK_WINDOW_POPUP);
895
896 gtk_signal_connect (GTK_OBJECT (drag_icon), "destroy",
897 GTK_SIGNAL_FUNC(gtk_widget_destroyed),
898 &drag_icon);
899
900 gtk_widget_hide (drag_icon);
901 }
902
903 GdkPoint hotspot_2 = {-5,-5};
904
905 if (!drop_icon)
906 {
907 drop_icon = shape_create_icon ( page_xpm,
908 440, 140, 0,0, GTK_WINDOW_POPUP);
909
910 gtk_signal_connect (GTK_OBJECT (drop_icon), "destroy",
911 GTK_SIGNAL_FUNC(gtk_widget_destroyed),
912 &drop_icon);
913
914 gtk_widget_hide (drop_icon);
915 }
916
917
918 gdk_dnd_set_drag_shape( drag_icon->window,
919 &hotspot_1,
920 drop_icon->window,
921 &hotspot_2);
922
923
924 GdkWindowPrivate *wp = (GdkWindowPrivate*) m_widget->window;
925
926 RegisterWindow();
927
928 gdk_dnd.drag_perhaps = TRUE;
929
930 gdk_dnd.dnd_drag_start.x = 5;
931 gdk_dnd.dnd_drag_start.y = 5;
932 gdk_dnd.real_sw = wp;
933
934 if (gdk_dnd.drag_startwindows)
935 {
936 g_free( gdk_dnd.drag_startwindows );
937 gdk_dnd.drag_startwindows = (GdkWindow **) NULL;
938 }
939 gdk_dnd.drag_numwindows = gdk_dnd.drag_really = 0;
940
941 XWindowAttributes dnd_winattr;
942 XGetWindowAttributes( gdk_display, wp->xwindow, &dnd_winattr );
943 wp->dnd_drag_savedeventmask = dnd_winattr.your_event_mask;
944
945 gdk_dnd_drag_addwindow( m_widget->window );
946
947 GdkEventDragBegin ev;
948 ev.type = GDK_DRAG_BEGIN;
949 ev.window = m_widget->window;
950 ev.u.allflags = 0;
951 ev.u.flags.protocol_version = DND_PROTOCOL_VERSION;
952
953 gdk_event_put( (GdkEvent*)&ev );
954
955 XGrabPointer( gdk_display, wp->xwindow, False,
956 ButtonMotionMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
957 GrabModeAsync, GrabModeAsync, gdk_root_window, None, CurrentTime );
958
959 gdk_dnd_set_drag_cursors( m_defaultCursor.GetCursor(), m_goaheadCursor.GetCursor() );
960
961 gdk_dnd.dnd_grabbed = TRUE;
962 gdk_dnd.drag_really = 1;
963
964 int x = 0;
965 int y = 0;
966 wxGetMousePosition( &x, &y );
967
968 gdk_dnd_display_drag_cursor( x, y, FALSE, TRUE );
969
970 gs_currentDropSource = this;
971
972 while (gdk_dnd.drag_really || gdk_dnd.drag_perhaps) wxYield();
973
974 gs_currentDropSource = (wxDropSource*) NULL;
975
976 UnregisterWindow();
977
978 g_blockEventsOnDrag = FALSE;
979
980 return m_retValue;
981 }
982
983 void wxDropSource::RegisterWindow(void)
984 {
985 if (!m_data) return;
986
987 wxString formats;
988
989 wxNode *node = m_data->m_dataObjects.First();
990 while (node)
991 {
992 wxDataObject* dobj = (wxDataObject*) node->Data();
993
994 switch (dobj->GetFormat().GetType())
995 {
996 case wxDF_TEXT:
997 {
998 formats += "text/plain";
999 break;
1000 }
1001 case wxDF_FILENAME:
1002 {
1003 formats += "file:ALL";
1004 break;
1005 }
1006 case wxDF_PRIVATE:
1007 {
1008 wxPrivateDataObject* pdo = (wxPrivateDataObject*) m_data;
1009 formats += pdo->GetId();
1010 break;
1011 }
1012 default:
1013 break;
1014 }
1015 node = node->Next();
1016 }
1017
1018 char *str = WXSTRINGCAST formats;
1019
1020 gtk_widget_dnd_drag_set( m_widget, TRUE, &str, 1 );
1021
1022 gtk_signal_connect( GTK_OBJECT(m_widget), "drag_request_event",
1023 GTK_SIGNAL_FUNC(gtk_drag_callback), (gpointer)this );
1024 }
1025
1026 void wxDropSource::UnregisterWindow(void)
1027 {
1028 if (!m_widget) return;
1029
1030 gtk_widget_dnd_drag_set( m_widget, FALSE, (gchar **) NULL, 0 );
1031
1032 gtk_signal_disconnect_by_data( GTK_OBJECT(m_widget), (gpointer)this );
1033 }
1034
1035
1036 /*
1037 * Shaped Windows
1038 */
1039 static GdkWindow *root_win = (GdkWindow*) NULL;
1040
1041 typedef struct _cursoroffset {gint x,y;} CursorOffset;
1042
1043 static void
1044 shape_pressed (GtkWidget *widget, GdkEventButton *event)
1045 {
1046 CursorOffset *p;
1047
1048 /* ignore double and triple click */
1049 if (event->type != GDK_BUTTON_PRESS)
1050 return;
1051
1052 p = (CursorOffset *)gtk_object_get_user_data (GTK_OBJECT(widget));
1053 p->x = (int) event->x;
1054 p->y = (int) event->y;
1055
1056 gtk_grab_add (widget);
1057 gdk_pointer_grab (widget->window, TRUE,
1058 (GdkEventMask)
1059 (GDK_BUTTON_RELEASE_MASK |
1060 GDK_BUTTON_MOTION_MASK |
1061 GDK_POINTER_MOTION_HINT_MASK),
1062 (GdkWindow*)NULL,
1063 (GdkCursor*) NULL, 0);
1064 }
1065
1066
1067 static void
1068 shape_released (GtkWidget *widget)
1069 {
1070 gtk_grab_remove (widget);
1071 gdk_pointer_ungrab (0);
1072 }
1073
1074 static void
1075 shape_motion (GtkWidget *widget,
1076 GdkEventMotion * /*event*/ )
1077 {
1078 gint xp, yp;
1079 CursorOffset * p;
1080 GdkModifierType mask;
1081
1082 p = (CursorOffset *)gtk_object_get_user_data (GTK_OBJECT (widget));
1083
1084 /*
1085 * Can't use event->x / event->y here
1086 * because I need absolute coordinates.
1087 */
1088
1089 gdk_window_get_pointer (root_win, &xp, &yp, &mask);
1090 gtk_widget_set_uposition (widget, xp - p->x, yp - p->y);
1091
1092 if (gs_currentDropSource) gs_currentDropSource->GiveFeedback( wxDragCopy, FALSE );
1093 }
1094
1095 GtkWidget *
1096 shape_create_icon (char **data,
1097 gint x,
1098 gint y,
1099 gint px,
1100 gint py,
1101 gint window_type)
1102 {
1103 GtkWidget *window;
1104 GtkWidget *pixmap;
1105 GtkWidget *fixed;
1106 CursorOffset* icon_pos;
1107 GdkGC* gc;
1108 GdkBitmap *gdk_pixmap_mask;
1109 GdkPixmap *gdk_pixmap;
1110 GtkStyle *style;
1111
1112 style = gtk_widget_get_default_style ();
1113 gc = style->black_gc;
1114
1115 /*
1116 * GDK_WINDOW_TOPLEVEL works also, giving you a title border
1117 */
1118 window = gtk_window_new ((GtkWindowType)window_type);
1119
1120 fixed = gtk_fixed_new ();
1121 gtk_widget_set_usize (fixed, 100,100);
1122 gtk_container_add (GTK_CONTAINER (window), fixed);
1123 gtk_widget_show (fixed);
1124
1125 gtk_widget_set_events (window,
1126 gtk_widget_get_events (window) |
1127 GDK_BUTTON_MOTION_MASK |
1128 GDK_POINTER_MOTION_HINT_MASK |
1129 GDK_BUTTON_PRESS_MASK);
1130
1131 gtk_widget_realize (window);
1132
1133 gdk_pixmap = gdk_pixmap_create_from_xpm_d (window->window, &gdk_pixmap_mask,
1134 &style->bg[GTK_STATE_NORMAL],
1135 (gchar**) data );
1136
1137 pixmap = gtk_pixmap_new (gdk_pixmap, gdk_pixmap_mask);
1138 gtk_fixed_put (GTK_FIXED (fixed), pixmap, px,py);
1139 gtk_widget_show (pixmap);
1140
1141 gtk_widget_shape_combine_mask (window, gdk_pixmap_mask, px,py);
1142
1143
1144 gtk_signal_connect (GTK_OBJECT (window), "button_press_event",
1145 GTK_SIGNAL_FUNC (shape_pressed),NULL);
1146 gtk_signal_connect (GTK_OBJECT (window), "button_release_event",
1147 GTK_SIGNAL_FUNC (shape_released),NULL);
1148 gtk_signal_connect (GTK_OBJECT (window), "motion_notify_event",
1149 GTK_SIGNAL_FUNC (shape_motion),NULL);
1150
1151 icon_pos = g_new (CursorOffset, 1);
1152 gtk_object_set_user_data(GTK_OBJECT(window), icon_pos);
1153
1154 gtk_widget_set_uposition (window, x, y);
1155 gtk_widget_show (window);
1156
1157 return window;
1158 }
1159
1160 #endif
1161 // NEW_GTK_DND_CODE
1162
1163 #endif
1164
1165 // wxUSE_DRAG_AND_DROP
wxWidgets (Impactor)