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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, "applications/" );
175 strcat( buf, WXSTRINGCAST pdt->GetID() );
176 format.target = buf;
177 valid++;
178 default:
179 break;
180 }
181 }
182
183 wxASSERT_MSG( valid != 0, "No valid DnD format supported." );
184
185 gtk_drag_dest_set( widget,
186 GTK_DEST_DEFAULT_ALL,
187 &format,
188 1,
189 (GdkDragAction)(GDK_ACTION_COPY | GDK_ACTION_MOVE) );
190
191 gtk_signal_connect( GTK_OBJECT(widget), "drag_leave",
192 GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
193
194 gtk_signal_connect( GTK_OBJECT(widget), "drag_motion",
195 GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
196
197 gtk_signal_connect( GTK_OBJECT(widget), "drag_drop",
198 GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
199
200 gtk_signal_connect( GTK_OBJECT(widget), "drag_data_received",
201 GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
202 }
203
204 // ----------------------------------------------------------------------------
205 // wxTextDropTarget
206 // ----------------------------------------------------------------------------
207
208 bool wxTextDropTarget::OnDrop( long x, long y, const void *data, size_t WXUNUSED(size) )
209 {
210 OnDropText( x, y, (const char*)data );
211 return TRUE;
212 }
213
214 bool wxTextDropTarget::OnDropText( long x, long y, const char *psz )
215 {
216 printf( "Got dropped text: %s.\n", psz );
217 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
218 return TRUE;
219 }
220
221 size_t wxTextDropTarget::GetFormatCount() const
222 {
223 return 1;
224 }
225
226 wxDataFormat wxTextDropTarget::GetFormat(size_t WXUNUSED(n)) const
227 {
228 return wxDF_TEXT;
229 }
230
231 // ----------------------------------------------------------------------------
232 // wxFileDropTarget
233 // ----------------------------------------------------------------------------
234
235 bool wxFileDropTarget::OnDropFiles( long x, long y, size_t nFiles, const char * const aszFiles[] )
236 {
237 printf( "Got %d dropped files.\n", (int)nFiles );
238 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
239 for (size_t i = 0; i < nFiles; i++)
240 {
241 printf( aszFiles[i] );
242 printf( "\n" );
243 }
244 return TRUE;
245 }
246
247 bool wxFileDropTarget::OnDrop(long x, long y, const void *data, size_t size )
248 {
249 size_t number = 0;
250 char *text = (char*) data;
251 for (size_t 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 (size_t 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 }
537
538 wxDropTarget::~wxDropTarget()
539 {
540 }
541
542 void wxDropTarget::UnregisterWidget( GtkWidget *widget )
543 {
544 if (!widget) return;
545
546 gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
547 GTK_SIGNAL_FUNC(gtk_target_callback), (gpointer) this );
548
549 gtk_widget_dnd_drop_set( widget, FALSE, (gchar **) NULL, 0, FALSE );
550 }
551
552 void wxDropTarget::RegisterWidget( GtkWidget *widget )
553 {
554 wxString formats;
555 int valid = 0;
556
557 for ( size_t i = 0; i < GetFormatCount(); i++ )
558 {
559 wxDataFormat df = GetFormat( i );
560 switch (df)
561 {
562 case wxDF_TEXT:
563 {
564 if (i > 0) formats += ";";
565 formats += "text/plain";
566 valid++;
567 break;
568 }
569 case wxDF_FILENAME:
570 {
571 if (i > 0) formats += ";";
572 formats += "file:ALL";
573 valid++;
574 break;
575 }
576 case wxDF_PRIVATE:
577 {
578 if (i > 0) formats += ";";
579 wxPrivateDropTarget *pdt = (wxPrivateDropTarget *)this;
580 formats += "applications/";
581 formats += pdt->GetId();
582 valid++;
583 break;
584 }
585 default:
586 break;
587 }
588 }
589
590 char *str = WXSTRINGCAST formats;
591
592 gtk_widget_dnd_drop_set( widget, TRUE, &str, valid, FALSE );
593
594 gtk_signal_connect( GTK_OBJECT(widget), "drop_data_available_event",
595 GTK_SIGNAL_FUNC(gtk_target_callback), (gpointer) this );
596
597 gtk_signal_connect( GTK_OBJECT(widget), "drop_enter_event",
598 GTK_SIGNAL_FUNC(gtk_target_enter_callback), (gpointer) this );
599
600 gtk_signal_connect( GTK_OBJECT(widget), "drop_leave_event",
601 GTK_SIGNAL_FUNC(gtk_target_leave_callback), (gpointer) this );
602 }
603
604 // ----------------------------------------------------------------------------
605 // wxTextDropTarget
606 // ----------------------------------------------------------------------------
607
608 bool wxTextDropTarget::OnDrop( long x, long y, const void *data, size_t WXUNUSED(size) )
609 {
610 OnDropText( x, y, (const char*)data );
611 return TRUE;
612 }
613
614 bool wxTextDropTarget::OnDropText( long x, long y, const char *psz )
615 {
616 /*
617 printf( "Got dropped text: %s.\n", psz );
618 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
619 */
620 return TRUE;
621 }
622
623 size_t wxTextDropTarget::GetFormatCount() const
624 {
625 return 1;
626 }
627
628 wxDataFormat wxTextDropTarget::GetFormat(size_t WXUNUSED(n)) const
629 {
630 return wxDF_TEXT;
631 }
632
633 // ----------------------------------------------------------------------------
634 // wxPrivateDropTarget
635 // ----------------------------------------------------------------------------
636
637 wxPrivateDropTarget::wxPrivateDropTarget()
638 {
639 m_id = wxTheApp->GetAppName();
640 }
641
642 size_t wxPrivateDropTarget::GetFormatCount() const
643 {
644 return 1;
645 }
646
647 wxDataFormat wxPrivateDropTarget::GetFormat(size_t WXUNUSED(n)) const
648 {
649 return wxDF_PRIVATE;
650 }
651
652 // ----------------------------------------------------------------------------
653 // wxFileDropTarget
654 // ----------------------------------------------------------------------------
655
656 bool wxFileDropTarget::OnDropFiles( long x, long y, size_t nFiles, const char * const aszFiles[] )
657 {
658 printf( "Got %d dropped files.\n", (int)nFiles );
659 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
660
661 for (size_t i = 0; i < nFiles; i++)
662 {
663 printf( aszFiles[i] );
664 printf( "\n" );
665 }
666
667 return TRUE;
668 }
669
670 bool wxFileDropTarget::OnDrop(long x, long y, const void *data, size_t size )
671 {
672 size_t number = 0;
673 char *text = (char*) data;
674 for (size_t i = 0; i < size; i++)
675 if (text[i] == 0) number++;
676
677 if (number == 0) return TRUE;
678
679 char **files = new char*[number];
680
681 text = (char*) data;
682 for (size_t i = 0; i < number; i++)
683 {
684 files[i] = text;
685 int len = strlen( text );
686 text += len+1;
687 }
688
689 bool ret = OnDropFiles( x, y, 1, files );
690
691 free( files );
692
693 return ret;
694 }
695
696 size_t wxFileDropTarget::GetFormatCount() const
697 {
698 return 1;
699 }
700
701 wxDataFormat wxFileDropTarget::GetFormat(size_t WXUNUSED(n)) const
702 {
703 return wxDF_FILENAME;
704 }
705
706 //-------------------------------------------------------------------------
707 // wxDropSource
708 //-------------------------------------------------------------------------
709
710 static void
711 shape_motion (GtkWidget *widget,
712 GdkEventMotion * /*event*/);
713
714 //-----------------------------------------------------------------------------
715 // drag request
716
717 void gtk_drag_callback( GtkWidget *widget, GdkEvent *event, wxDropSource *source )
718 {
719 wxDataObject *data = source->m_data;
720
721 switch (data->GetFormat())
722 {
723 case wxDF_PRIVATE:
724 {
725 wxPrivateDataObject *pdo = (wxPrivateDataObject*) data;
726
727 gtk_widget_dnd_data_set( widget,
728 event,
729 (unsigned char*) pdo->GetData(),
730 (int) pdo->GetDataSize() );
731
732 break;
733 }
734 case wxDF_TEXT:
735 {
736 wxTextDataObject *text_object = (wxTextDataObject*) data;
737
738 wxString text = text_object->GetText();
739
740 char *s = WXSTRINGCAST text;
741
742 gtk_widget_dnd_data_set( widget,
743 event,
744 (unsigned char*) s,
745 (int) text.Length()+1 );
746
747 break;
748 }
749
750 case wxDF_FILENAME:
751 {
752 wxFileDataObject *file_object = (wxFileDataObject*) data;
753
754 wxString text = file_object->GetFiles();
755
756 char *s = WXSTRINGCAST text;
757
758 gtk_widget_dnd_data_set( widget,
759 event,
760 (unsigned char*) s,
761 (int) text.Length()+1 );
762
763 break;
764 }
765
766 default:
767 {
768 return;
769 }
770 }
771
772 source->m_retValue = wxDragCopy;
773 }
774
775 wxDropSource::wxDropSource( wxWindow *win )
776 {
777 g_blockEventsOnDrag = TRUE;
778
779 m_window = win;
780 m_widget = win->m_widget;
781 if (win->m_wxwindow) m_widget = win->m_wxwindow;
782
783 m_data = (wxDataObject *) NULL;
784 m_retValue = wxDragCancel;
785
786 m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
787 m_goaheadCursor = wxCursor( wxCURSOR_HAND );
788 }
789
790 wxDropSource::wxDropSource( wxDataObject &data, wxWindow *win )
791 {
792 g_blockEventsOnDrag = TRUE;
793
794 m_window = win;
795 m_widget = win->m_widget;
796 if (win->m_wxwindow) m_widget = win->m_wxwindow;
797 m_retValue = wxDragCancel;
798
799 m_data = &data;
800
801 m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
802 m_goaheadCursor = wxCursor( wxCURSOR_HAND );
803 }
804
805 void wxDropSource::SetData( wxDataObject &data )
806 {
807 m_data = &data;
808 }
809
810 wxDropSource::~wxDropSource(void)
811 {
812 // if (m_data) delete m_data;
813
814 g_blockEventsOnDrag = FALSE;
815 }
816
817 wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
818 {
819 if (gdk_dnd.dnd_grabbed) return (wxDragResult) wxDragNone;
820 if (gdk_dnd.drag_really) return (wxDragResult) wxDragNone;
821
822 wxASSERT_MSG( m_data, "wxDragSource: no data" );
823
824 if (!m_data) return (wxDragResult) wxDragNone;
825
826 static GtkWidget *drag_icon = (GtkWidget*) NULL;
827 static GtkWidget *drop_icon = (GtkWidget*) NULL;
828
829 GdkPoint hotspot_1 = {0,-5 };
830
831 if (!drag_icon)
832 {
833 drag_icon = shape_create_icon ( gv_xpm,
834 440, 140, 0,0, GTK_WINDOW_POPUP);
835
836 gtk_signal_connect (GTK_OBJECT (drag_icon), "destroy",
837 GTK_SIGNAL_FUNC(gtk_widget_destroyed),
838 &drag_icon);
839
840 gtk_widget_hide (drag_icon);
841 }
842
843 GdkPoint hotspot_2 = {-5,-5};
844
845 if (!drop_icon)
846 {
847 drop_icon = shape_create_icon ( page_xpm,
848 440, 140, 0,0, GTK_WINDOW_POPUP);
849
850 gtk_signal_connect (GTK_OBJECT (drop_icon), "destroy",
851 GTK_SIGNAL_FUNC(gtk_widget_destroyed),
852 &drop_icon);
853
854 gtk_widget_hide (drop_icon);
855 }
856
857
858 gdk_dnd_set_drag_shape( drag_icon->window,
859 &hotspot_1,
860 drop_icon->window,
861 &hotspot_2);
862
863
864 GdkWindowPrivate *wp = (GdkWindowPrivate*) m_widget->window;
865
866 RegisterWindow();
867
868 gdk_dnd.drag_perhaps = TRUE;
869
870 gdk_dnd.dnd_drag_start.x = 5;
871 gdk_dnd.dnd_drag_start.y = 5;
872 gdk_dnd.real_sw = wp;
873
874 if (gdk_dnd.drag_startwindows)
875 {
876 g_free( gdk_dnd.drag_startwindows );
877 gdk_dnd.drag_startwindows = (GdkWindow **) NULL;
878 }
879 gdk_dnd.drag_numwindows = gdk_dnd.drag_really = 0;
880
881 XWindowAttributes dnd_winattr;
882 XGetWindowAttributes( gdk_display, wp->xwindow, &dnd_winattr );
883 wp->dnd_drag_savedeventmask = dnd_winattr.your_event_mask;
884
885 gdk_dnd_drag_addwindow( m_widget->window );
886
887 GdkEventDragBegin ev;
888 ev.type = GDK_DRAG_BEGIN;
889 ev.window = m_widget->window;
890 ev.u.allflags = 0;
891 ev.u.flags.protocol_version = DND_PROTOCOL_VERSION;
892
893 gdk_event_put( (GdkEvent*)&ev );
894
895 XGrabPointer( gdk_display, wp->xwindow, False,
896 ButtonMotionMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
897 GrabModeAsync, GrabModeAsync, gdk_root_window, None, CurrentTime );
898
899 gdk_dnd_set_drag_cursors( m_defaultCursor.GetCursor(), m_goaheadCursor.GetCursor() );
900
901 gdk_dnd.dnd_grabbed = TRUE;
902 gdk_dnd.drag_really = 1;
903
904 int x = 0;
905 int y = 0;
906 wxGetMousePosition( &x, &y );
907
908 gdk_dnd_display_drag_cursor( x, y, FALSE, TRUE );
909
910 gs_currentDropSource = this;
911
912 while (gdk_dnd.drag_really || gdk_dnd.drag_perhaps) wxYield();
913
914 gs_currentDropSource = (wxDropSource*) NULL;
915
916 UnregisterWindow();
917
918 g_blockEventsOnDrag = FALSE;
919
920 return m_retValue;
921 }
922
923 void wxDropSource::RegisterWindow(void)
924 {
925 if (!m_data) return;
926
927 wxString formats;
928
929 wxDataFormat df = m_data->GetFormat();
930
931 switch (df)
932 {
933 case wxDF_TEXT:
934 {
935 formats += "text/plain";
936 break;
937 }
938 case wxDF_FILENAME:
939 {
940 formats += "file:ALL";
941 break;
942 }
943 case wxDF_PRIVATE:
944 {
945 wxPrivateDataObject* pdo = (wxPrivateDataObject*) m_data;
946 formats += "applications/";
947 formats += pdo->GetId();
948 break;
949 }
950 default:
951 break;
952 }
953
954 char *str = WXSTRINGCAST formats;
955
956 gtk_widget_dnd_drag_set( m_widget, TRUE, &str, 1 );
957
958 gtk_signal_connect( GTK_OBJECT(m_widget), "drag_request_event",
959 GTK_SIGNAL_FUNC(gtk_drag_callback), (gpointer)this );
960 }
961
962 void wxDropSource::UnregisterWindow(void)
963 {
964 if (!m_widget) return;
965
966 gtk_widget_dnd_drag_set( m_widget, FALSE, (gchar **) NULL, 0 );
967
968 gtk_signal_disconnect_by_data( GTK_OBJECT(m_widget), (gpointer)this );
969 }
970
971
972 /*
973 * Shaped Windows
974 */
975 static GdkWindow *root_win = (GdkWindow*) NULL;
976
977 typedef struct _cursoroffset {gint x,y;} CursorOffset;
978
979 static void
980 shape_pressed (GtkWidget *widget, GdkEventButton *event)
981 {
982 CursorOffset *p;
983
984 /* ignore double and triple click */
985 if (event->type != GDK_BUTTON_PRESS)
986 return;
987
988 p = (CursorOffset *)gtk_object_get_user_data (GTK_OBJECT(widget));
989 p->x = (int) event->x;
990 p->y = (int) event->y;
991
992 gtk_grab_add (widget);
993 gdk_pointer_grab (widget->window, TRUE,
994 (GdkEventMask)
995 (GDK_BUTTON_RELEASE_MASK |
996 GDK_BUTTON_MOTION_MASK |
997 GDK_POINTER_MOTION_HINT_MASK),
998 (GdkWindow*)NULL,
999 (GdkCursor*) NULL, 0);
1000 }
1001
1002
1003 static void
1004 shape_released (GtkWidget *widget)
1005 {
1006 gtk_grab_remove (widget);
1007 gdk_pointer_ungrab (0);
1008 }
1009
1010 static void
1011 shape_motion (GtkWidget *widget,
1012 GdkEventMotion * /*event*/ )
1013 {
1014 gint xp, yp;
1015 CursorOffset * p;
1016 GdkModifierType mask;
1017
1018 p = (CursorOffset *)gtk_object_get_user_data (GTK_OBJECT (widget));
1019
1020 /*
1021 * Can't use event->x / event->y here
1022 * because I need absolute coordinates.
1023 */
1024
1025 gdk_window_get_pointer (root_win, &xp, &yp, &mask);
1026 gtk_widget_set_uposition (widget, xp - p->x, yp - p->y);
1027
1028 if (gs_currentDropSource) gs_currentDropSource->GiveFeedback( wxDragCopy, FALSE );
1029 }
1030
1031 GtkWidget *
1032 shape_create_icon (char **data,
1033 gint x,
1034 gint y,
1035 gint px,
1036 gint py,
1037 gint window_type)
1038 {
1039 GtkWidget *window;
1040 GtkWidget *pixmap;
1041 GtkWidget *fixed;
1042 CursorOffset* icon_pos;
1043 GdkGC* gc;
1044 GdkBitmap *gdk_pixmap_mask;
1045 GdkPixmap *gdk_pixmap;
1046 GtkStyle *style;
1047
1048 style = gtk_widget_get_default_style ();
1049 gc = style->black_gc;
1050
1051 /*
1052 * GDK_WINDOW_TOPLEVEL works also, giving you a title border
1053 */
1054 window = gtk_window_new ((GtkWindowType)window_type);
1055
1056 fixed = gtk_fixed_new ();
1057 gtk_widget_set_usize (fixed, 100,100);
1058 gtk_container_add (GTK_CONTAINER (window), fixed);
1059 gtk_widget_show (fixed);
1060
1061 gtk_widget_set_events (window,
1062 gtk_widget_get_events (window) |
1063 GDK_BUTTON_MOTION_MASK |
1064 GDK_POINTER_MOTION_HINT_MASK |
1065 GDK_BUTTON_PRESS_MASK);
1066
1067 gtk_widget_realize (window);
1068
1069 gdk_pixmap = gdk_pixmap_create_from_xpm_d (window->window, &gdk_pixmap_mask,
1070 &style->bg[GTK_STATE_NORMAL],
1071 (gchar**) data );
1072
1073 pixmap = gtk_pixmap_new (gdk_pixmap, gdk_pixmap_mask);
1074 gtk_fixed_put (GTK_FIXED (fixed), pixmap, px,py);
1075 gtk_widget_show (pixmap);
1076
1077 gtk_widget_shape_combine_mask (window, gdk_pixmap_mask, px,py);
1078
1079
1080 gtk_signal_connect (GTK_OBJECT (window), "button_press_event",
1081 GTK_SIGNAL_FUNC (shape_pressed),NULL);
1082 gtk_signal_connect (GTK_OBJECT (window), "button_release_event",
1083 GTK_SIGNAL_FUNC (shape_released),NULL);
1084 gtk_signal_connect (GTK_OBJECT (window), "motion_notify_event",
1085 GTK_SIGNAL_FUNC (shape_motion),NULL);
1086
1087 icon_pos = g_new (CursorOffset, 1);
1088 gtk_object_set_user_data(GTK_OBJECT(window), icon_pos);
1089
1090 gtk_widget_set_uposition (window, x, y);
1091 gtk_widget_show (window);
1092
1093 return window;
1094 }
1095
1096 #endif
1097 // NEW_GTK_DND_CODE
1098
1099 #endif
1100
1101 // wxUSE_DRAG_AND_DROP
wxWidgets (Impactor)