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Corrected stupid error.
[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, "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 // "drop_data_available_event"
477 //-----------------------------------------------------------------------------
478
479 static void gtk_target_callback( GtkWidget *widget,
480 GdkEventDropDataAvailable *event,
481 wxDropTarget *target )
482 {
483 if (target)
484 {
485 int x = 0;
486 int y = 0;
487 gdk_window_get_pointer( widget->window, &x, &y, (GdkModifierType *) NULL );
488 /*
489 printf( "Drop data is of type %s.\n", event->data_type );
490 */
491 target->OnDrop( x, y, (const void*)event->data, (size_t)event->data_numbytes );
492 }
493
494 /*
495 g_free (event->data);
496 g_free (event->data_type);
497 */
498 }
499
500 // ----------------------------------------------------------------------------
501 // wxDropTarget
502 // ----------------------------------------------------------------------------
503
504 wxDropTarget::wxDropTarget()
505 {
506 }
507
508 wxDropTarget::~wxDropTarget()
509 {
510 }
511
512 void wxDropTarget::UnregisterWidget( GtkWidget *widget )
513 {
514 if (!widget) return;
515
516 gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
517 GTK_SIGNAL_FUNC(gtk_target_callback), (gpointer) this );
518
519 gtk_widget_dnd_drop_set( widget, FALSE, (gchar **) NULL, 0, FALSE );
520 }
521
522 void wxDropTarget::RegisterWidget( GtkWidget *widget )
523 {
524 wxString formats;
525 int valid = 0;
526
527 for ( size_t i = 0; i < GetFormatCount(); i++ )
528 {
529 wxDataFormat df = GetFormat( i );
530 switch (df)
531 {
532 case wxDF_TEXT:
533 {
534 if (i > 0) formats += ";";
535 formats += "text/plain";
536 valid++;
537 break;
538 }
539 case wxDF_FILENAME:
540 {
541 if (i > 0) formats += ";";
542 formats += "file:ALL";
543 valid++;
544 break;
545 }
546 case wxDF_PRIVATE:
547 {
548 if (i > 0) formats += ";";
549 wxPrivateDropTarget *pdt = (wxPrivateDropTarget *)this;
550 formats += "applications/";
551 formats += pdt->GetId();
552 valid++;
553 break;
554 }
555 default:
556 break;
557 }
558 }
559
560 char *str = WXSTRINGCAST formats;
561
562 gtk_widget_dnd_drop_set( widget, TRUE, &str, valid, FALSE );
563
564 gtk_signal_connect( GTK_OBJECT(widget), "drop_data_available_event",
565 GTK_SIGNAL_FUNC(gtk_target_callback), (gpointer) this );
566 }
567
568 // ----------------------------------------------------------------------------
569 // wxTextDropTarget
570 // ----------------------------------------------------------------------------
571
572 bool wxTextDropTarget::OnDrop( long x, long y, const void *data, size_t WXUNUSED(size) )
573 {
574 OnDropText( x, y, (const char*)data );
575 return TRUE;
576 }
577
578 bool wxTextDropTarget::OnDropText( long x, long y, const char *psz )
579 {
580 /*
581 printf( "Got dropped text: %s.\n", psz );
582 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
583 */
584 return TRUE;
585 }
586
587 size_t wxTextDropTarget::GetFormatCount() const
588 {
589 return 1;
590 }
591
592 wxDataFormat wxTextDropTarget::GetFormat(size_t WXUNUSED(n)) const
593 {
594 return wxDF_TEXT;
595 }
596
597 // ----------------------------------------------------------------------------
598 // wxPrivateDropTarget
599 // ----------------------------------------------------------------------------
600
601 wxPrivateDropTarget::wxPrivateDropTarget()
602 {
603 m_id = wxTheApp->GetAppName();
604 }
605
606 size_t wxPrivateDropTarget::GetFormatCount() const
607 {
608 return 1;
609 }
610
611 wxDataFormat wxPrivateDropTarget::GetFormat(size_t WXUNUSED(n)) const
612 {
613 return wxDF_PRIVATE;
614 }
615
616 // ----------------------------------------------------------------------------
617 // wxFileDropTarget
618 // ----------------------------------------------------------------------------
619
620 bool wxFileDropTarget::OnDropFiles( long x, long y, size_t nFiles, const char * const aszFiles[] )
621 {
622 printf( "Got %d dropped files.\n", (int)nFiles );
623 printf( "At x: %d, y: %d.\n", (int)x, (int)y );
624
625 for (size_t i = 0; i < nFiles; i++)
626 {
627 printf( aszFiles[i] );
628 printf( "\n" );
629 }
630
631 return TRUE;
632 }
633
634 bool wxFileDropTarget::OnDrop(long x, long y, const void *data, size_t size )
635 {
636 size_t number = 0;
637 char *text = (char*) data;
638 for (size_t i = 0; i < size; i++)
639 if (text[i] == 0) number++;
640
641 if (number == 0) return TRUE;
642
643 char **files = new char*[number];
644
645 text = (char*) data;
646 for (size_t i = 0; i < number; i++)
647 {
648 files[i] = text;
649 int len = strlen( text );
650 text += len+1;
651 }
652
653 bool ret = OnDropFiles( x, y, 1, files );
654
655 free( files );
656
657 return ret;
658 }
659
660 size_t wxFileDropTarget::GetFormatCount() const
661 {
662 return 1;
663 }
664
665 wxDataFormat wxFileDropTarget::GetFormat(size_t WXUNUSED(n)) const
666 {
667 return wxDF_FILENAME;
668 }
669
670 //-------------------------------------------------------------------------
671 // wxDropSource
672 //-------------------------------------------------------------------------
673
674 static void
675 shape_motion (GtkWidget *widget,
676 GdkEventMotion */*event*/);
677
678 //-----------------------------------------------------------------------------
679 // drag request
680
681 void gtk_drag_callback( GtkWidget *widget, GdkEvent *event, wxDropSource *source )
682 {
683 wxDataObject *data = source->m_data;
684
685 switch (data->GetFormat())
686 {
687 case wxDF_PRIVATE:
688 {
689 wxPrivateDataObject *pdo = (wxPrivateDataObject*) data;
690
691 gtk_widget_dnd_data_set( widget,
692 event,
693 (unsigned char*) pdo->GetData(),
694 (int) pdo->GetDataSize() );
695
696 break;
697 }
698 case wxDF_TEXT:
699 {
700 wxTextDataObject *text_object = (wxTextDataObject*) data;
701
702 wxString text = text_object->GetText();
703
704 char *s = WXSTRINGCAST text;
705
706 gtk_widget_dnd_data_set( widget,
707 event,
708 (unsigned char*) s,
709 (int) text.Length()+1 );
710
711 break;
712 }
713
714 case wxDF_FILENAME:
715 {
716 wxFileDataObject *file_object = (wxFileDataObject*) data;
717
718 wxString text = file_object->GetFiles();
719
720 char *s = WXSTRINGCAST text;
721
722 gtk_widget_dnd_data_set( widget,
723 event,
724 (unsigned char*) s,
725 (int) text.Length()+1 );
726
727 break;
728 }
729
730 default:
731 {
732 return;
733 }
734 }
735
736 source->m_retValue = wxDragCopy;
737 }
738
739 wxDropSource::wxDropSource( wxWindow *win )
740 {
741 g_blockEventsOnDrag = TRUE;
742
743 m_window = win;
744 m_widget = win->m_widget;
745 if (win->m_wxwindow) m_widget = win->m_wxwindow;
746
747 m_data = (wxDataObject *) NULL;
748 m_retValue = wxDragCancel;
749
750 m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
751 m_goaheadCursor = wxCursor( wxCURSOR_HAND );
752 }
753
754 wxDropSource::wxDropSource( wxDataObject &data, wxWindow *win )
755 {
756 g_blockEventsOnDrag = TRUE;
757
758 m_window = win;
759 m_widget = win->m_widget;
760 if (win->m_wxwindow) m_widget = win->m_wxwindow;
761 m_retValue = wxDragCancel;
762
763 m_data = &data;
764
765 m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
766 m_goaheadCursor = wxCursor( wxCURSOR_HAND );
767 }
768
769 void wxDropSource::SetData( wxDataObject &data )
770 {
771 m_data = &data;
772 }
773
774 wxDropSource::~wxDropSource(void)
775 {
776 // if (m_data) delete m_data;
777
778 g_blockEventsOnDrag = FALSE;
779 }
780
781 wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
782 {
783 if (gdk_dnd.dnd_grabbed) return (wxDragResult) wxDragNone;
784 if (gdk_dnd.drag_really) return (wxDragResult) wxDragNone;
785
786 wxASSERT_MSG( m_data, "wxDragSource: no data" );
787
788 if (!m_data) return (wxDragResult) wxDragNone;
789
790 static GtkWidget *drag_icon = (GtkWidget*) NULL;
791 static GtkWidget *drop_icon = (GtkWidget*) NULL;
792
793 GdkPoint hotspot_1 = {0,-5 };
794
795 if (!drag_icon)
796 {
797 drag_icon = shape_create_icon ( gv_xpm,
798 440, 140, 0,0, GTK_WINDOW_POPUP);
799
800 gtk_signal_connect (GTK_OBJECT (drag_icon), "destroy",
801 GTK_SIGNAL_FUNC(gtk_widget_destroyed),
802 &drag_icon);
803
804 gtk_widget_hide (drag_icon);
805 }
806
807 GdkPoint hotspot_2 = {-5,-5};
808
809 if (!drop_icon)
810 {
811 drop_icon = shape_create_icon ( page_xpm,
812 440, 140, 0,0, GTK_WINDOW_POPUP);
813
814 gtk_signal_connect (GTK_OBJECT (drop_icon), "destroy",
815 GTK_SIGNAL_FUNC(gtk_widget_destroyed),
816 &drop_icon);
817
818 gtk_widget_hide (drop_icon);
819 }
820
821
822 gdk_dnd_set_drag_shape( drag_icon->window,
823 &hotspot_1,
824 drop_icon->window,
825 &hotspot_2);
826
827
828 GdkWindowPrivate *wp = (GdkWindowPrivate*) m_widget->window;
829
830 RegisterWindow();
831
832 gdk_dnd.drag_perhaps = TRUE;
833
834 gdk_dnd.dnd_drag_start.x = 5;
835 gdk_dnd.dnd_drag_start.y = 5;
836 gdk_dnd.real_sw = wp;
837
838 if (gdk_dnd.drag_startwindows)
839 {
840 g_free( gdk_dnd.drag_startwindows );
841 gdk_dnd.drag_startwindows = (GdkWindow **) NULL;
842 }
843 gdk_dnd.drag_numwindows = gdk_dnd.drag_really = 0;
844
845 XWindowAttributes dnd_winattr;
846 XGetWindowAttributes( gdk_display, wp->xwindow, &dnd_winattr );
847 wp->dnd_drag_savedeventmask = dnd_winattr.your_event_mask;
848
849 gdk_dnd_drag_addwindow( m_widget->window );
850
851 GdkEventDragBegin ev;
852 ev.type = GDK_DRAG_BEGIN;
853 ev.window = m_widget->window;
854 ev.u.allflags = 0;
855 ev.u.flags.protocol_version = DND_PROTOCOL_VERSION;
856
857 gdk_event_put( (GdkEvent*)&ev );
858
859 XGrabPointer( gdk_display, wp->xwindow, False,
860 ButtonMotionMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
861 GrabModeAsync, GrabModeAsync, gdk_root_window, None, CurrentTime );
862
863 gdk_dnd_set_drag_cursors( m_defaultCursor.GetCursor(), m_goaheadCursor.GetCursor() );
864
865 gdk_dnd.dnd_grabbed = TRUE;
866 gdk_dnd.drag_really = 1;
867
868 int x = 0;
869 int y = 0;
870 wxGetMousePosition( &x, &y );
871
872 gdk_dnd_display_drag_cursor( x, y, FALSE, TRUE );
873
874 while (gdk_dnd.drag_really || gdk_dnd.drag_perhaps) wxYield();
875
876 UnregisterWindow();
877
878 g_blockEventsOnDrag = FALSE;
879
880 return m_retValue;
881 }
882
883 void wxDropSource::RegisterWindow(void)
884 {
885 if (!m_data) return;
886
887 wxString formats;
888
889 wxDataFormat df = m_data->GetFormat();
890
891 switch (df)
892 {
893 case wxDF_TEXT:
894 {
895 formats += "text/plain";
896 break;
897 }
898 case wxDF_FILENAME:
899 {
900 formats += "file:ALL";
901 break;
902 }
903 case wxDF_PRIVATE:
904 {
905 wxPrivateDataObject* pdo = (wxPrivateDataObject*) m_data;
906 formats += "applications/";
907 formats += pdo->GetId();
908 break;
909 }
910 default:
911 break;
912 }
913
914 char *str = WXSTRINGCAST formats;
915
916 gtk_widget_dnd_drag_set( m_widget, TRUE, &str, 1 );
917
918 gtk_signal_connect( GTK_OBJECT(m_widget), "drag_request_event",
919 GTK_SIGNAL_FUNC(gtk_drag_callback), (gpointer)this );
920 }
921
922 void wxDropSource::UnregisterWindow(void)
923 {
924 if (!m_widget) return;
925
926 gtk_widget_dnd_drag_set( m_widget, FALSE, (gchar **) NULL, 0 );
927
928 gtk_signal_disconnect_by_data( GTK_OBJECT(m_widget), (gpointer)this );
929 }
930
931
932 /*
933 * Shaped Windows
934 */
935 static GdkWindow *root_win = (GdkWindow*) NULL;
936
937 typedef struct _cursoroffset {gint x,y;} CursorOffset;
938
939 static void
940 shape_pressed (GtkWidget *widget, GdkEventButton *event)
941 {
942 CursorOffset *p;
943
944 /* ignore double and triple click */
945 if (event->type != GDK_BUTTON_PRESS)
946 return;
947
948 p = (CursorOffset *)gtk_object_get_user_data (GTK_OBJECT(widget));
949 p->x = (int) event->x;
950 p->y = (int) event->y;
951
952 gtk_grab_add (widget);
953 gdk_pointer_grab (widget->window, TRUE,
954 (GdkEventMask)
955 (GDK_BUTTON_RELEASE_MASK |
956 GDK_BUTTON_MOTION_MASK |
957 GDK_POINTER_MOTION_HINT_MASK),
958 (GdkWindow*)NULL,
959 (GdkCursor*) NULL, 0);
960 }
961
962
963 static void
964 shape_released (GtkWidget *widget)
965 {
966 gtk_grab_remove (widget);
967 gdk_pointer_ungrab (0);
968 }
969
970 static void
971 shape_motion (GtkWidget *widget,
972 GdkEventMotion */*event*/)
973 {
974 gint xp, yp;
975 CursorOffset * p;
976 GdkModifierType mask;
977
978 p = (CursorOffset *)gtk_object_get_user_data (GTK_OBJECT (widget));
979
980 /*
981 * Can't use event->x / event->y here
982 * because I need absolute coordinates.
983 */
984 gdk_window_get_pointer (root_win, &xp, &yp, &mask);
985 gtk_widget_set_uposition (widget, xp - p->x, yp - p->y);
986 }
987
988 GtkWidget *
989 shape_create_icon (char **data,
990 gint x,
991 gint y,
992 gint px,
993 gint py,
994 gint window_type)
995 {
996 GtkWidget *window;
997 GtkWidget *pixmap;
998 GtkWidget *fixed;
999 CursorOffset* icon_pos;
1000 GdkGC* gc;
1001 GdkBitmap *gdk_pixmap_mask;
1002 GdkPixmap *gdk_pixmap;
1003 GtkStyle *style;
1004
1005 style = gtk_widget_get_default_style ();
1006 gc = style->black_gc;
1007
1008 /*
1009 * GDK_WINDOW_TOPLEVEL works also, giving you a title border
1010 */
1011 window = gtk_window_new ((GtkWindowType)window_type);
1012
1013 fixed = gtk_fixed_new ();
1014 gtk_widget_set_usize (fixed, 100,100);
1015 gtk_container_add (GTK_CONTAINER (window), fixed);
1016 gtk_widget_show (fixed);
1017
1018 gtk_widget_set_events (window,
1019 gtk_widget_get_events (window) |
1020 GDK_BUTTON_MOTION_MASK |
1021 GDK_POINTER_MOTION_HINT_MASK |
1022 GDK_BUTTON_PRESS_MASK);
1023
1024 gtk_widget_realize (window);
1025
1026 gdk_pixmap = gdk_pixmap_create_from_xpm_d (window->window, &gdk_pixmap_mask,
1027 &style->bg[GTK_STATE_NORMAL],
1028 (gchar**) data );
1029
1030 pixmap = gtk_pixmap_new (gdk_pixmap, gdk_pixmap_mask);
1031 gtk_fixed_put (GTK_FIXED (fixed), pixmap, px,py);
1032 gtk_widget_show (pixmap);
1033
1034 gtk_widget_shape_combine_mask (window, gdk_pixmap_mask, px,py);
1035
1036
1037 gtk_signal_connect (GTK_OBJECT (window), "button_press_event",
1038 GTK_SIGNAL_FUNC (shape_pressed),NULL);
1039 gtk_signal_connect (GTK_OBJECT (window), "button_release_event",
1040 GTK_SIGNAL_FUNC (shape_released),NULL);
1041 gtk_signal_connect (GTK_OBJECT (window), "motion_notify_event",
1042 GTK_SIGNAL_FUNC (shape_motion),NULL);
1043
1044 icon_pos = g_new (CursorOffset, 1);
1045 gtk_object_set_user_data(GTK_OBJECT(window), icon_pos);
1046
1047 gtk_widget_set_uposition (window, x, y);
1048 gtk_widget_show (window);
1049
1050 return window;
1051 }
1052
1053 #endif
1054 // NEW_GTK_DND_CODE
1055
1056 #endif
1057
1058 // wxUSE_DRAG_AND_DROP
wxWidgets (Impactor)