The Return of WM Size Hints Part IV.
[wxWidgets.git] / src / gtk1 / dialog.cpp
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 /* all this is for Motif Window Manager "hints" and is supposed to be
135 recognized by other WM as well. not tested. */
136 long decor = (long) GDK_DECOR_BORDER;
137 long func = (long) GDK_FUNC_MOVE ;
138
139 /* Some WM don't display any border around the frame contents if
140 used with these hints, so we add a resize border around it,
141 without automatically allowinng it to be resized though.
142
143 This avoids the problem, but looks odd. What shall we do?
144 */
145 decor |= GDK_DECOR_RESIZEH;
146
147 if ((win->GetWindowStyle() & wxCAPTION) != 0)
148 decor |= GDK_DECOR_TITLE;
149 if ((win->GetWindowStyle() & wxSYSTEM_MENU) != 0)
150 {
151 decor |= GDK_DECOR_MENU;
152 func |= GDK_FUNC_CLOSE;
153 }
154 if ((win->GetWindowStyle() & wxMINIMIZE_BOX) != 0)
155 {
156 func |= GDK_FUNC_MINIMIZE;
157 decor |= GDK_DECOR_MINIMIZE;
158 }
159 if ((win->GetWindowStyle() & wxMAXIMIZE_BOX) != 0)
160 {
161 decor |= GDK_DECOR_MAXIMIZE;
162 func |= GDK_FUNC_MAXIMIZE;
163 }
164 if ((win->GetWindowStyle() & wxRESIZE_BORDER) != 0)
165 {
166 func |= GDK_FUNC_RESIZE;
167 decor |= GDK_DECOR_RESIZEH;
168 }
169 gdk_window_set_decorations( win->m_widget->window, (GdkWMDecoration)decor);
170 gdk_window_set_functions( win->m_widget->window, (GdkWMFunction)func);
171
172 /* GTK's shrinking/growing policy */
173 if ((win->GetWindowStyle() & wxRESIZE_BORDER) == 0)
174 gtk_window_set_policy(GTK_WINDOW(win->m_widget), 0, 0, 1);
175 else
176 gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
177
178 /* reset the icon */
179 if (win->m_icon != wxNullIcon)
180 {
181 wxIcon icon( win->m_icon );
182 win->m_icon = wxNullIcon;
183 win->SetIcon( icon );
184 }
185
186 return FALSE;
187 }
188
189 //-----------------------------------------------------------------------------
190 // InsertChild for wxDialog
191 //-----------------------------------------------------------------------------
192
193 /* Callback for wxFrame. This very strange beast has to be used because
194 * C++ has no virtual methods in a constructor. We have to emulate a
195 * virtual function here as wxWindows requires different ways to insert
196 * a child in container classes. */
197
198 static void wxInsertChildInDialog( wxDialog* parent, wxWindow* child )
199 {
200 gtk_pizza_put( GTK_PIZZA(parent->m_wxwindow),
201 GTK_WIDGET(child->m_widget),
202 child->m_x,
203 child->m_y,
204 child->m_width,
205 child->m_height );
206
207 if (parent->HasFlag(wxTAB_TRAVERSAL))
208 {
209 /* we now allow a window to get the focus as long as it
210 doesn't have any children. */
211 GTK_WIDGET_UNSET_FLAGS( parent->m_wxwindow, GTK_CAN_FOCUS );
212 }
213 }
214
215 //-----------------------------------------------------------------------------
216 // wxDialog
217 //-----------------------------------------------------------------------------
218
219 BEGIN_EVENT_TABLE(wxDialog,wxPanel)
220 EVT_BUTTON (wxID_OK, wxDialog::OnOK)
221 EVT_BUTTON (wxID_CANCEL, wxDialog::OnCancel)
222 EVT_BUTTON (wxID_APPLY, wxDialog::OnApply)
223 EVT_SIZE (wxDialog::OnSize)
224 EVT_CLOSE (wxDialog::OnCloseWindow)
225 END_EVENT_TABLE()
226
227 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxPanel)
228
229 void wxDialog::Init()
230 {
231 m_returnCode = 0;
232 m_sizeSet = FALSE;
233 m_modalShowing = FALSE;
234 m_isFrame = TRUE;
235 }
236
237 wxDialog::wxDialog( wxWindow *parent,
238 wxWindowID id, const wxString &title,
239 const wxPoint &pos, const wxSize &size,
240 long style, const wxString &name )
241 {
242 Init();
243
244 Create( parent, id, title, pos, size, style, name );
245 }
246
247 bool wxDialog::Create( wxWindow *parent,
248 wxWindowID id, const wxString &title,
249 const wxPoint &pos, const wxSize &size,
250 long style, const wxString &name )
251 {
252 wxTopLevelWindows.Append( this );
253
254 m_needParent = FALSE;
255
256 if (!PreCreation( parent, pos, size ) ||
257 !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
258 {
259 wxFAIL_MSG( wxT("wxDialog creation failed") );
260 return FALSE;
261 }
262
263 // All dialogs should really have this style
264 m_windowStyle |= wxTAB_TRAVERSAL;
265
266 m_insertCallback = (wxInsertChildFunction) wxInsertChildInDialog;
267
268 m_widget = gtk_window_new( GTK_WINDOW_DIALOG );
269
270 if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
271 gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
272
273 if (!name.IsEmpty())
274 gtk_window_set_wmclass( GTK_WINDOW(m_widget), name.mb_str(), name.mb_str() );
275
276 GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
277
278 gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
279 GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
280
281 m_wxwindow = gtk_pizza_new();
282 gtk_widget_show( m_wxwindow );
283 GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
284
285 gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
286
287 SetTitle( title );
288
289 if (m_parent) m_parent->AddChild( this );
290
291 PostCreation();
292
293 if ((m_x != -1) || (m_y != -1))
294 gtk_widget_set_uposition( m_widget, m_x, m_y );
295 gtk_widget_set_usize( m_widget, m_width, m_height );
296
297 /* we cannot set MWM hints before the widget has
298 been realized, so we do this directly after realization */
299 gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
300 GTK_SIGNAL_FUNC(gtk_dialog_realized_callback), (gpointer) this );
301
302 /* the user resized the frame by dragging etc. */
303 gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
304 GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
305
306 gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
307 GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
308
309 /* disable native tab traversal */
310 gtk_signal_connect( GTK_OBJECT(m_widget), "focus",
311 GTK_SIGNAL_FUNC(gtk_dialog_focus_callback), (gpointer)this );
312
313 return TRUE;
314 }
315
316 wxDialog::~wxDialog()
317 {
318 m_isBeingDeleted = TRUE;
319
320 wxTopLevelWindows.DeleteObject( this );
321
322 if (wxTheApp->GetTopWindow() == this)
323 {
324 wxTheApp->SetTopWindow( (wxWindow*) NULL );
325 }
326
327 if ((wxTopLevelWindows.Number() == 0) &&
328 (wxTheApp->GetExitOnFrameDelete()))
329 {
330 wxTheApp->ExitMainLoop();
331 }
332 }
333
334 void wxDialog::SetTitle( const wxString& title )
335 {
336 m_title = title;
337 if (m_title.IsNull()) m_title = wxT("");
338 gtk_window_set_title( GTK_WINDOW(m_widget), m_title.mbc_str() );
339 }
340
341 wxString wxDialog::GetTitle() const
342 {
343 return (wxString&)m_title;
344 }
345
346 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
347 {
348 if (Validate()) TransferDataFromWindow();
349 }
350
351 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
352 {
353 if (IsModal())
354 {
355 EndModal(wxID_CANCEL);
356 }
357 else
358 {
359 SetReturnCode(wxID_CANCEL);
360 Show(FALSE);
361 }
362 }
363
364 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
365 {
366 if (Validate() && TransferDataFromWindow())
367 {
368 if (IsModal())
369 {
370 EndModal(wxID_OK);
371 }
372 else
373 {
374 SetReturnCode(wxID_OK);
375 this->Show(FALSE);
376 }
377 }
378 }
379
380 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
381 {
382 // yes
383 }
384
385 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
386 {
387 // We'll send a Cancel message by default,
388 // which may close the dialog.
389 // Check for looping if the Cancel event handler calls Close().
390
391 // Note that if a cancel button and handler aren't present in the dialog,
392 // nothing will happen when you close the dialog via the window manager, or
393 // via Close().
394 // We wouldn't want to destroy the dialog by default, since the dialog may have been
395 // created on the stack.
396 // However, this does mean that calling dialog->Close() won't delete the dialog
397 // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
398 // sure to destroy the dialog.
399 // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
400
401 static wxList s_closing;
402
403 if (s_closing.Member(this))
404 return; // no loops
405
406 s_closing.Append(this);
407
408 wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
409 cancelEvent.SetEventObject( this );
410 GetEventHandler()->ProcessEvent(cancelEvent);
411 s_closing.DeleteObject(this);
412 }
413
414 bool wxDialog::Destroy()
415 {
416 if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
417
418 return TRUE;
419 }
420
421 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
422 {
423 wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
424
425 #if wxUSE_CONSTRAINTS
426 if (GetAutoLayout())
427 {
428 Layout();
429 }
430 else
431 #endif // wxUSE_CONSTRAINTS
432 {
433 /* no child: go out ! */
434 if (!GetChildren().First()) return;
435
436 /* do we have exactly one child? */
437 wxWindow *child = (wxWindow *) NULL;
438 for(wxNode *node = GetChildren().First(); node; node = node->Next())
439 {
440 wxWindow *win = (wxWindow *)node->Data();
441 if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
442 {
443 /* it's the second one: do nothing */
444 if (child) return;
445 child = win;
446 }
447 }
448
449 /* yes: set it's size to fill all the frame */
450 int client_x, client_y;
451 GetClientSize( &client_x, &client_y );
452 child->SetSize( 1, 1, client_x-2, client_y);
453 }
454 }
455
456 void wxDialog::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
457 {
458 wxFAIL_MSG( wxT("DoMoveWindow called for wxDialog") );
459 }
460
461 void wxDialog::DoSetSize( int x, int y, int width, int height, int sizeFlags )
462 {
463 wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
464 wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
465
466 if (m_resizing) return; /* I don't like recursions */
467 m_resizing = TRUE;
468
469 int old_x = m_x;
470 int old_y = m_y;
471
472 int old_width = m_width;
473 int old_height = m_height;
474
475 if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0)
476 {
477 if (x != -1) m_x = x;
478 if (y != -1) m_y = y;
479 if (width != -1) m_width = width;
480 if (height != -1) m_height = height;
481 }
482 else
483 {
484 m_x = x;
485 m_y = y;
486 m_width = width;
487 m_height = height;
488 }
489
490 /*
491 if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
492 {
493 if (width == -1) m_width = 80;
494 }
495
496 if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
497 {
498 if (height == -1) m_height = 26;
499 }
500 */
501
502 if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
503 if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
504 if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
505 if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
506
507 if ((m_x != -1) || (m_y != -1))
508 {
509 if ((m_x != old_x) || (m_y != old_y))
510 {
511 /* we set the position here and when showing the dialog
512 for the first time in idle time */
513 gtk_widget_set_uposition( m_widget, m_x, m_y );
514 }
515 }
516
517 if ((m_width != old_width) || (m_height != old_height))
518 {
519 gtk_widget_set_usize( m_widget, m_width, m_height );
520
521 /* actual resizing is deferred to GtkOnSize in idle time and
522 when showing the dialog */
523 m_sizeSet = FALSE;
524 }
525
526 m_resizing = FALSE;
527 }
528
529 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
530 {
531 // due to a bug in gtk, x,y are always 0
532 // m_x = x;
533 // m_y = y;
534
535 if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
536 if (!m_wxwindow) return;
537
538 m_width = width;
539 m_height = height;
540
541 if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
542 if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
543 if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
544 if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
545
546 /* set size hints */
547 gint flag = 0; // GDK_HINT_POS;
548 if ((m_minWidth != -1) || (m_minHeight != -1)) flag |= GDK_HINT_MIN_SIZE;
549 if ((m_maxWidth != -1) || (m_maxHeight != -1)) flag |= GDK_HINT_MAX_SIZE;
550 GdkGeometry geom;
551 geom.min_width = m_minWidth;
552 geom.min_height = m_minHeight;
553 geom.max_width = m_maxWidth;
554 geom.max_height = m_maxHeight;
555 gtk_window_set_geometry_hints( GTK_WINDOW(m_widget),
556 (GtkWidget*) NULL,
557 &geom,
558 (GdkWindowHints) flag );
559
560 m_sizeSet = TRUE;
561
562 wxSizeEvent event( wxSize(m_width,m_height), GetId() );
563 event.SetEventObject( this );
564 GetEventHandler()->ProcessEvent( event );
565 }
566
567 void wxDialog::OnInternalIdle()
568 {
569 if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
570 GtkOnSize( m_x, m_y, m_width, m_height );
571
572 wxWindow::OnInternalIdle();
573 }
574
575 bool wxDialog::Show( bool show )
576 {
577 if (!show && IsModal())
578 {
579 EndModal( wxID_CANCEL );
580 }
581
582 if (show && !m_sizeSet)
583 {
584 /* by calling GtkOnSize here, we don't have to call
585 either after showing the frame, which would entail
586 much ugly flicker nor from within the size_allocate
587 handler, because GTK 1.1.X forbids that. */
588
589 GtkOnSize( m_x, m_y, m_width, m_height );
590 }
591
592 bool ret = wxWindow::Show( show );
593
594 if (show) InitDialog();
595
596 return ret;
597 }
598
599 bool wxDialog::IsModal() const
600 {
601 return m_modalShowing;
602 }
603
604 void wxDialog::SetModal( bool WXUNUSED(flag) )
605 {
606 /*
607 if (flag)
608 m_windowStyle |= wxDIALOG_MODAL;
609 else
610 if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
611 */
612 wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
613 }
614
615 int wxDialog::ShowModal()
616 {
617 if (IsModal())
618 {
619 wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
620 return GetReturnCode();
621 }
622
623 wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
624
625 Show( TRUE );
626
627 m_modalShowing = TRUE;
628
629 g_openDialogs++;
630
631 gtk_grab_add( m_widget );
632 gtk_main();
633 gtk_grab_remove( m_widget );
634
635 g_openDialogs--;
636
637 return GetReturnCode();
638 }
639
640 void wxDialog::EndModal( int retCode )
641 {
642 SetReturnCode( retCode );
643
644 if (!IsModal())
645 {
646 wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
647 return;
648 }
649
650 m_modalShowing = FALSE;
651
652 gtk_main_quit();
653
654 Show( FALSE );
655 }
656
657 void wxDialog::InitDialog()
658 {
659 wxWindow::InitDialog();
660 }
661
662 void wxDialog::SetIcon( const wxIcon &icon )
663 {
664 m_icon = icon;
665 if (!icon.Ok()) return;
666
667 if (!m_widget->window) return;
668
669 wxMask *mask = icon.GetMask();
670 GdkBitmap *bm = (GdkBitmap *) NULL;
671 if (mask) bm = mask->GetBitmap();
672
673 gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
674 }