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