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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: dialog.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // Id: $Id$
6 // Copyright: (c) 1998 Robert Roebling
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 #ifdef __GNUG__
11 #pragma implementation "dialog.h"
12 #endif
13
14 #include "wx/dialog.h"
15 #include "wx/frame.h"
16 #include "wx/app.h"
17 #include "wx/cursor.h"
18
19 #include <gdk/gdk.h>
20 #include <gtk/gtk.h>
21 #include <gdk/gdkkeysyms.h>
22
23 #include "wx/gtk/win_gtk.h"
24
25 //-----------------------------------------------------------------------------
26 // idle system
27 //-----------------------------------------------------------------------------
28
29 extern void wxapp_install_idle_handler();
30 extern bool g_isIdle;
31 extern int g_openDialogs;
32
33 //-----------------------------------------------------------------------------
34 // data
35 //-----------------------------------------------------------------------------
36
37 extern wxList wxPendingDelete;
38
39 //-----------------------------------------------------------------------------
40 // "focus" from m_window
41 //-----------------------------------------------------------------------------
42
43 static gint gtk_dialog_focus_callback( GtkWidget *widget, GtkDirectionType WXUNUSED(d), wxWindow *WXUNUSED(win) )
44 {
45 if (g_isIdle)
46 wxapp_install_idle_handler();
47
48 // This disables GTK's tab traversal
49 gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus" );
50 return TRUE;
51 }
52
53 //-----------------------------------------------------------------------------
54 // "delete_event"
55 //-----------------------------------------------------------------------------
56
57 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxDialog *win )
58 {
59 if (g_isIdle)
60 wxapp_install_idle_handler();
61
62 if (win->IsEnabled())
63 win->Close();
64
65 return TRUE;
66 }
67
68 //-----------------------------------------------------------------------------
69 // "size_allocate"
70 //-----------------------------------------------------------------------------
71
72 static void gtk_dialog_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxDialog *win )
73 {
74 if (g_isIdle)
75 wxapp_install_idle_handler();
76
77 if (!win->m_hasVMT) return;
78
79 if ((win->m_width != alloc->width) || (win->m_height != alloc->height))
80 {
81 win->m_width = alloc->width;
82 win->m_height = alloc->height;
83 win->GtkUpdateSize();
84 }
85 }
86
87 //-----------------------------------------------------------------------------
88 // "configure_event"
89 //-----------------------------------------------------------------------------
90
91 static gint
92 #if (GTK_MINOR_VERSION > 0)
93 gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDialog *win )
94 #else
95 gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *event, wxDialog *win )
96 #endif
97 {
98 if (g_isIdle)
99 wxapp_install_idle_handler();
100
101 if (!win->m_hasVMT) return FALSE;
102
103 #if (GTK_MINOR_VERSION > 0)
104 int x = 0;
105 int y = 0;
106 gdk_window_get_root_origin( win->m_widget->window, &x, &y );
107 win->m_x = x;
108 win->m_y = y;
109 #else
110 win->m_x = event->x;
111 win->m_y = event->y;
112 #endif
113
114 wxMoveEvent mevent( wxPoint(win->m_x,win->m_y), win->GetId() );
115 mevent.SetEventObject( win );
116 win->GetEventHandler()->ProcessEvent( mevent );
117
118 return FALSE;
119 }
120
121 //-----------------------------------------------------------------------------
122 // "realize" from m_widget
123 //-----------------------------------------------------------------------------
124
125 /* we cannot MWM hints and icons before the widget has been realized,
126 so we do this directly after realization */
127
128 static gint
129 gtk_dialog_realized_callback( GtkWidget *widget, wxDialog *win )
130 {
131 if (g_isIdle)
132 wxapp_install_idle_handler();
133
134 /* I haven't been able to set the position of
135 the dialog before it is shown, so I set the
136 position in "realize" */
137 gtk_widget_set_uposition( widget, win->m_x, win->m_y );
138
139 /* all this is for Motif Window Manager "hints" and is supposed to be
140 recognized by other WM as well. not tested. */
141 long decor = (long) GDK_DECOR_BORDER;
142 long func = (long) GDK_FUNC_MOVE ;
143
144 /* Some WM don't display any border around the frame contents if
145 used with these hints, so we add a resize border around it,
146 without automatically allowinng it to be resized though.
147
148 This avoids the problem, but looks odd. What shall we do?
149 */
150 decor |= GDK_DECOR_RESIZEH;
151
152 if ((win->GetWindowStyle() & wxCAPTION) != 0)
153 decor |= GDK_DECOR_TITLE;
154 if ((win->GetWindowStyle() & wxSYSTEM_MENU) != 0)
155 {
156 decor |= GDK_DECOR_MENU;
157 func |= GDK_FUNC_CLOSE;
158 }
159 if ((win->GetWindowStyle() & wxMINIMIZE_BOX) != 0)
160 {
161 func |= GDK_FUNC_MINIMIZE;
162 decor |= GDK_DECOR_MINIMIZE;
163 }
164 if ((win->GetWindowStyle() & wxMAXIMIZE_BOX) != 0)
165 {
166 decor |= GDK_DECOR_MAXIMIZE;
167 func |= GDK_FUNC_MAXIMIZE;
168 }
169 if ((win->GetWindowStyle() & wxRESIZE_BORDER) != 0)
170 {
171 func |= GDK_FUNC_RESIZE;
172 decor |= GDK_DECOR_RESIZEH;
173 }
174 gdk_window_set_decorations( win->m_widget->window, (GdkWMDecoration)decor);
175 gdk_window_set_functions( win->m_widget->window, (GdkWMFunction)func);
176
177 /* GTK's shrinking/growing policy */
178 if ((win->GetWindowStyle() & wxRESIZE_BORDER) == 0)
179 gtk_window_set_policy(GTK_WINDOW(win->m_widget), 0, 0, 1);
180 else
181 gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
182
183 /* set size hints */
184 gint flag = 0; // GDK_HINT_POS;
185 if ((win->GetMinWidth() != -1) || (win->GetMinHeight() != -1)) flag |= GDK_HINT_MIN_SIZE;
186 if ((win->GetMaxWidth() != -1) || (win->GetMaxHeight() != -1)) flag |= GDK_HINT_MAX_SIZE;
187 if (flag)
188 {
189 gdk_window_set_hints( win->m_widget->window,
190 win->m_x, win->m_y,
191 win->GetMinWidth(), win->GetMinHeight(),
192 win->GetMaxWidth(), win->GetMaxHeight(),
193 flag );
194 }
195
196 /* reset the icon */
197 if (win->m_icon != wxNullIcon)
198 {
199 wxIcon icon( win->m_icon );
200 win->m_icon = wxNullIcon;
201 win->SetIcon( icon );
202 }
203
204 return FALSE;
205 }
206
207 //-----------------------------------------------------------------------------
208 // InsertChild for wxDialog
209 //-----------------------------------------------------------------------------
210
211 /* Callback for wxFrame. This very strange beast has to be used because
212 * C++ has no virtual methods in a constructor. We have to emulate a
213 * virtual function here as wxWindows requires different ways to insert
214 * a child in container classes. */
215
216 static void wxInsertChildInDialog( wxDialog* parent, wxWindow* child )
217 {
218 gtk_pizza_put( GTK_PIZZA(parent->m_wxwindow),
219 GTK_WIDGET(child->m_widget),
220 child->m_x,
221 child->m_y,
222 child->m_width,
223 child->m_height );
224
225 if (parent->HasFlag(wxTAB_TRAVERSAL))
226 {
227 /* we now allow a window to get the focus as long as it
228 doesn't have any children. */
229 GTK_WIDGET_UNSET_FLAGS( parent->m_wxwindow, GTK_CAN_FOCUS );
230 }
231 }
232
233 //-----------------------------------------------------------------------------
234 // wxDialog
235 //-----------------------------------------------------------------------------
236
237 BEGIN_EVENT_TABLE(wxDialog,wxPanel)
238 EVT_BUTTON (wxID_OK, wxDialog::OnOK)
239 EVT_BUTTON (wxID_CANCEL, wxDialog::OnCancel)
240 EVT_BUTTON (wxID_APPLY, wxDialog::OnApply)
241 EVT_SIZE (wxDialog::OnSize)
242 EVT_CLOSE (wxDialog::OnCloseWindow)
243 END_EVENT_TABLE()
244
245 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxPanel)
246
247 void wxDialog::Init()
248 {
249 m_returnCode = 0;
250 m_sizeSet = FALSE;
251 m_modalShowing = FALSE;
252 m_isFrame = TRUE;
253 }
254
255 wxDialog::wxDialog( wxWindow *parent,
256 wxWindowID id, const wxString &title,
257 const wxPoint &pos, const wxSize &size,
258 long style, const wxString &name )
259 {
260 Init();
261
262 Create( parent, id, title, pos, size, style, name );
263 }
264
265 bool wxDialog::Create( wxWindow *parent,
266 wxWindowID id, const wxString &title,
267 const wxPoint &pos, const wxSize &size,
268 long style, const wxString &name )
269 {
270 g_openDialogs++;
271
272 wxTopLevelWindows.Append( this );
273
274 m_needParent = FALSE;
275
276 if (!PreCreation( parent, pos, size ) ||
277 !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
278 {
279 wxFAIL_MSG( wxT("wxDialog creation failed") );
280 return FALSE;
281 }
282
283 // All dialogs should really have this style
284 m_windowStyle |= wxTAB_TRAVERSAL;
285
286 m_insertCallback = (wxInsertChildFunction) wxInsertChildInDialog;
287
288 m_widget = gtk_window_new( GTK_WINDOW_DIALOG );
289
290 if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
291 gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
292
293 if (!name.IsEmpty())
294 gtk_window_set_wmclass( GTK_WINDOW(m_widget), name.mb_str(), name.mb_str() );
295
296 GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
297
298 gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
299 GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
300
301 m_wxwindow = gtk_pizza_new();
302 gtk_widget_show( m_wxwindow );
303 GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
304
305 gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
306
307 SetTitle( title );
308
309 if (m_parent) m_parent->AddChild( this );
310
311 PostCreation();
312
313 /* we cannot set MWM hints before the widget has
314 been realized, so we do this directly after realization */
315 gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
316 GTK_SIGNAL_FUNC(gtk_dialog_realized_callback), (gpointer) this );
317
318 /* the user resized the frame by dragging etc. */
319 gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
320 GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
321
322 gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
323 GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
324
325 /* disable native tab traversal */
326 gtk_signal_connect( GTK_OBJECT(m_widget), "focus",
327 GTK_SIGNAL_FUNC(gtk_dialog_focus_callback), (gpointer)this );
328
329 return TRUE;
330 }
331
332 wxDialog::~wxDialog()
333 {
334 m_isBeingDeleted = TRUE;
335
336 wxTopLevelWindows.DeleteObject( this );
337
338 if (wxTheApp->GetTopWindow() == this)
339 {
340 wxTheApp->SetTopWindow( (wxWindow*) NULL );
341 }
342
343 if ((wxTopLevelWindows.Number() == 0) &&
344 (wxTheApp->GetExitOnFrameDelete()))
345 {
346 wxTheApp->ExitMainLoop();
347 }
348
349 g_openDialogs--;
350 }
351
352 void wxDialog::SetTitle( const wxString& title )
353 {
354 m_title = title;
355 if (m_title.IsNull()) m_title = wxT("");
356 gtk_window_set_title( GTK_WINDOW(m_widget), m_title.mbc_str() );
357 }
358
359 wxString wxDialog::GetTitle() const
360 {
361 return (wxString&)m_title;
362 }
363
364 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
365 {
366 if (Validate()) TransferDataFromWindow();
367 }
368
369 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
370 {
371 if (IsModal())
372 {
373 EndModal(wxID_CANCEL);
374 }
375 else
376 {
377 SetReturnCode(wxID_CANCEL);
378 Show(FALSE);
379 }
380 }
381
382 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
383 {
384 if (Validate() && TransferDataFromWindow())
385 {
386 if (IsModal())
387 {
388 EndModal(wxID_OK);
389 }
390 else
391 {
392 SetReturnCode(wxID_OK);
393 this->Show(FALSE);
394 }
395 }
396 }
397
398 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
399 {
400 // yes
401 }
402
403 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
404 {
405 // We'll send a Cancel message by default,
406 // which may close the dialog.
407 // Check for looping if the Cancel event handler calls Close().
408
409 // Note that if a cancel button and handler aren't present in the dialog,
410 // nothing will happen when you close the dialog via the window manager, or
411 // via Close().
412 // We wouldn't want to destroy the dialog by default, since the dialog may have been
413 // created on the stack.
414 // However, this does mean that calling dialog->Close() won't delete the dialog
415 // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
416 // sure to destroy the dialog.
417 // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
418
419 static wxList s_closing;
420
421 if (s_closing.Member(this))
422 return; // no loops
423
424 s_closing.Append(this);
425
426 wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
427 cancelEvent.SetEventObject( this );
428 GetEventHandler()->ProcessEvent(cancelEvent);
429 s_closing.DeleteObject(this);
430 }
431
432 bool wxDialog::Destroy()
433 {
434 if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
435
436 return TRUE;
437 }
438
439 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
440 {
441 wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
442
443 #if wxUSE_CONSTRAINTS
444 if (GetAutoLayout())
445 {
446 Layout();
447 }
448 else
449 #endif // wxUSE_CONSTRAINTS
450 {
451 /* no child: go out ! */
452 if (!GetChildren().First()) return;
453
454 /* do we have exactly one child? */
455 wxWindow *child = (wxWindow *) NULL;
456 for(wxNode *node = GetChildren().First(); node; node = node->Next())
457 {
458 wxWindow *win = (wxWindow *)node->Data();
459 if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
460 {
461 /* it's the second one: do nothing */
462 if (child) return;
463 child = win;
464 }
465 }
466
467 /* yes: set it's size to fill all the frame */
468 int client_x, client_y;
469 GetClientSize( &client_x, &client_y );
470 child->SetSize( 1, 1, client_x-2, client_y);
471 }
472 }
473
474 void wxDialog::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
475 {
476 wxFAIL_MSG( wxT("DoMoveWindow called for wxDialog") );
477 }
478
479 void wxDialog::DoSetSize( int x, int y, int width, int height, int sizeFlags )
480 {
481 wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
482 wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
483
484 if (m_resizing) return; /* I don't like recursions */
485 m_resizing = TRUE;
486
487 int old_x = m_x;
488 int old_y = m_y;
489
490 int old_width = m_width;
491 int old_height = m_height;
492
493 if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0)
494 {
495 if (x != -1) m_x = x;
496 if (y != -1) m_y = y;
497 if (width != -1) m_width = width;
498 if (height != -1) m_height = height;
499 }
500 else
501 {
502 m_x = x;
503 m_y = y;
504 m_width = width;
505 m_height = height;
506 }
507
508 /*
509 if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
510 {
511 if (width == -1) m_width = 80;
512 }
513
514 if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
515 {
516 if (height == -1) m_height = 26;
517 }
518 */
519
520 if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
521 if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
522 if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
523 if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
524
525 if ((m_x != -1) || (m_y != -1))
526 {
527 if ((m_x != old_x) || (m_y != old_y))
528 {
529 /* we set the position here and when showing the dialog
530 for the first time in idle time */
531 gtk_widget_set_uposition( m_widget, m_x, m_y );
532 }
533 }
534
535 if ((m_width != old_width) || (m_height != old_height))
536 {
537 /* actual resizing is deferred to GtkOnSize in idle time and
538 when showing the dialog */
539 m_sizeSet = FALSE;
540 }
541
542 m_resizing = FALSE;
543 }
544
545 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
546 {
547 // due to a bug in gtk, x,y are always 0
548 // m_x = x;
549 // m_y = y;
550
551 if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
552 if (!m_wxwindow) return;
553
554 m_width = width;
555 m_height = height;
556
557 if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
558 if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
559 if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
560 if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
561
562 /* we actually set the size of a frame here and no-where else */
563 gtk_widget_set_usize( m_widget, m_width, m_height );
564
565 m_sizeSet = TRUE;
566
567 wxSizeEvent event( wxSize(m_width,m_height), GetId() );
568 event.SetEventObject( this );
569 GetEventHandler()->ProcessEvent( event );
570 }
571
572 void wxDialog::OnInternalIdle()
573 {
574 if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
575 GtkOnSize( m_x, m_y, m_width, m_height );
576
577 wxWindow::OnInternalIdle();
578 }
579
580 bool wxDialog::Show( bool show )
581 {
582 if (!show && IsModal())
583 {
584 EndModal( wxID_CANCEL );
585 }
586
587 if (show && !m_sizeSet)
588 {
589 /* by calling GtkOnSize here, we don't have to call
590 either after showing the frame, which would entail
591 much ugly flicker nor from within the size_allocate
592 handler, because GTK 1.1.X forbids that. */
593
594 GtkOnSize( m_x, m_y, m_width, m_height );
595 }
596
597 bool ret = wxWindow::Show( show );
598
599 if (show) InitDialog();
600
601 return ret;
602 }
603
604 bool wxDialog::IsModal() const
605 {
606 return m_modalShowing;
607 }
608
609 void wxDialog::SetModal( bool WXUNUSED(flag) )
610 {
611 /*
612 if (flag)
613 m_windowStyle |= wxDIALOG_MODAL;
614 else
615 if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
616 */
617 wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
618 }
619
620 int wxDialog::ShowModal()
621 {
622 if (IsModal())
623 {
624 wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
625 return GetReturnCode();
626 }
627
628 wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
629
630 Show( TRUE );
631
632 m_modalShowing = TRUE;
633
634 gtk_grab_add( m_widget );
635 gtk_main();
636 gtk_grab_remove( m_widget );
637
638 return GetReturnCode();
639 }
640
641 void wxDialog::EndModal( int retCode )
642 {
643 SetReturnCode( retCode );
644
645 if (!IsModal())
646 {
647 wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
648 return;
649 }
650
651 m_modalShowing = FALSE;
652
653 gtk_main_quit();
654
655 Show( FALSE );
656 }
657
658 void wxDialog::InitDialog()
659 {
660 wxWindow::InitDialog();
661 }
662
663 void wxDialog::SetIcon( const wxIcon &icon )
664 {
665 m_icon = icon;
666 if (!icon.Ok()) return;
667
668 if (!m_widget->window) return;
669
670 wxMask *mask = icon.GetMask();
671 GdkBitmap *bm = (GdkBitmap *) NULL;
672 if (mask) bm = mask->GetBitmap();
673
674 gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
675 }