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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: menu.cpp
3 // Purpose: wxMenu, wxMenuBar, wxMenuItem
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 17/09/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12
13 // ============================================================================
14 // declarations
15 // ============================================================================
16
17 #ifdef __GNUG__
18 #pragma implementation "menu.h"
19 #endif
20
21 // ----------------------------------------------------------------------------
22 // headers
23 // ----------------------------------------------------------------------------
24
25 #include "wx/defs.h"
26
27 #include "wx/menu.h"
28 #include "wx/menuitem.h"
29 #include "wx/log.h"
30 #include "wx/utils.h"
31 #include "wx/app.h"
32 #include "wx/frame.h"
33 #include "wx/settings.h"
34
35 #ifdef __VMS__
36 #pragma message disable nosimpint
37 #define XtDisplay XTDISPLAY
38 #define XtWindow XTWINDOW
39 #endif
40 #include <Xm/Label.h>
41 #include <Xm/LabelG.h>
42 #include <Xm/CascadeBG.h>
43 #include <Xm/CascadeB.h>
44 #include <Xm/SeparatoG.h>
45 #include <Xm/PushBG.h>
46 #include <Xm/ToggleB.h>
47 #include <Xm/ToggleBG.h>
48 #include <Xm/RowColumn.h>
49 #ifdef __VMS__
50 #pragma message enable nosimpint
51 #endif
52
53 #include "wx/motif/private.h"
54
55 // other standard headers
56 #include <string.h>
57
58 IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
59 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxEvtHandler)
60
61 // ============================================================================
62 // implementation
63 // ============================================================================
64
65 // ----------------------------------------------------------------------------
66 // Menus
67 // ----------------------------------------------------------------------------
68
69 // Construct a menu with optional title (then use append)
70 void wxMenu::Init()
71 {
72 // Motif-specific members
73 m_numColumns = 1;
74 m_menuWidget = (WXWidget) NULL;
75 m_popupShell = (WXWidget) NULL;
76 m_buttonWidget = (WXWidget) NULL;
77 m_menuId = 0;
78 m_topLevelMenu = (wxMenu*) NULL;
79 m_ownedByMenuBar = FALSE;
80
81 if ( !!m_title )
82 {
83 Append(wxID_SEPARATOR, m_title) ;
84 AppendSeparator() ;
85 }
86
87 m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_MENU);
88 m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_MENUTEXT);
89 m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
90 }
91
92 // The wxWindow destructor will take care of deleting the submenus.
93 wxMenu::~wxMenu()
94 {
95 if (m_menuWidget)
96 {
97 if (m_menuParent)
98 DestroyMenu(TRUE);
99 else
100 DestroyMenu(FALSE);
101 }
102
103 // Not sure if this is right
104 if (m_menuParent && m_menuBar)
105 {
106 m_menuParent = NULL;
107 // m_menuBar = NULL;
108 }
109 }
110
111 void wxMenu::Break()
112 {
113 m_numColumns++;
114 }
115
116 // function appends a new item or submenu to the menu
117 bool wxMenu::DoAppend(wxMenuItem *pItem)
118 {
119 if (m_menuWidget)
120 {
121 // this is a dynamic Append
122 pItem->CreateItem(m_menuWidget, m_menuBar, m_topLevelMenu);
123 }
124
125 if ( pItem->IsSubMenu() )
126 {
127 pItem->GetSubMenu()->m_topLevelMenu = m_topLevelMenu;
128 }
129
130 return wxMenuBase::DoAppend(pItem);
131 }
132
133 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
134 {
135 item->DestroyItem(TRUE);
136
137 return wxMenuBase::DoRemove(item);
138 }
139
140 bool wxMenu::DoInsert(size_t pos, wxMenuItem *item)
141 {
142 if ( wxMenuBase::DoInsert(pos, item) )
143 return TRUE;
144
145 wxFAIL_MSG(wxT("DoInsert not implemented; or error in wxMenuBase::DoInsert"));
146
147 return FALSE;
148 }
149
150 void wxMenu::SetTitle(const wxString& label)
151 {
152 m_title = label;
153
154 wxMenuItemList::Node *node = GetMenuItems().GetFirst();
155 if ( !node )
156 return;
157
158 wxMenuItem *item = node->GetData ();
159 Widget widget = (Widget) item->GetButtonWidget();
160 if ( !widget )
161 return;
162
163 wxXmString title_str(label);
164 XtVaSetValues(widget,
165 XmNlabelString, title_str(),
166 NULL);
167 }
168
169 bool wxMenu::ProcessCommand(wxCommandEvent & event)
170 {
171 bool processed = FALSE;
172
173 #if wxUSE_MENU_CALLBACK
174 // Try a callback
175 if (m_callback)
176 {
177 (void) (*(m_callback)) (*this, event);
178 processed = TRUE;
179 }
180 #endif // wxUSE_MENU_CALLBACK
181
182 // Try the menu's event handler
183 if ( !processed && GetEventHandler())
184 {
185 processed = GetEventHandler()->ProcessEvent(event);
186 }
187 // Try the window the menu was popped up from (and up
188 // through the hierarchy)
189 if ( !processed && GetInvokingWindow())
190 processed = GetInvokingWindow()->ProcessEvent(event);
191
192 return processed;
193 }
194
195 // ----------------------------------------------------------------------------
196 // Menu Bar
197 // ----------------------------------------------------------------------------
198
199 void wxMenuBar::Init()
200 {
201 m_eventHandler = this;
202 m_menuBarFrame = NULL;
203 m_mainWidget = (WXWidget) NULL;
204 m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_MENU);
205 m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_MENUTEXT);
206 m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
207 }
208
209 wxMenuBar::wxMenuBar(int n, wxMenu *menus[], const wxString titles[])
210 {
211 Init();
212
213 for ( int i = 0; i < n; i++ )
214 {
215 m_menus.Append(menus[i]);
216 m_titles.Add(titles[i]);
217 }
218 }
219
220 wxMenuBar::~wxMenuBar()
221 {
222 // nothing to do: wxMenuBarBase will delete the menus
223 }
224
225 void wxMenuBar::EnableTop(size_t WXUNUSED(pos), bool WXUNUSED(flag))
226 {
227 // wxFAIL_MSG("TODO");
228 // wxLogWarning("wxMenuBar::EnableTop not yet implemented.");
229 }
230
231 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
232 {
233 wxMenu *menu = GetMenu(pos);
234 if ( !menu )
235 return;
236
237 Widget w = (Widget)menu->GetButtonWidget();
238 if (w)
239 {
240 wxXmString label_str(label);
241
242 XtVaSetValues(w,
243 XmNlabelString, label_str(),
244 NULL);
245 }
246 }
247
248 wxString wxMenuBar::GetLabelTop(size_t pos) const
249 {
250 wxMenu *menu = GetMenu(pos);
251 if ( menu )
252 {
253 Widget w = (Widget)menu->GetButtonWidget();
254 if (w)
255 {
256 XmString text;
257 XtVaGetValues(w,
258 XmNlabelString, &text,
259 NULL);
260
261 return wxXmStringToString( text );
262 }
263 }
264
265 return wxEmptyString;
266 }
267
268 bool wxMenuBar::Append(wxMenu * menu, const wxString& title)
269 {
270 wxCHECK_MSG( menu, FALSE, wxT("invalid menu") );
271 wxCHECK_MSG( !menu->GetParent() && !menu->GetButtonWidget(), FALSE,
272 wxT("menu already appended") );
273
274 if ( m_menuBarFrame )
275 {
276 WXWidget w = menu->CreateMenu(this, GetMainWidget(), menu, title, TRUE);
277 wxCHECK_MSG( w, FALSE, wxT("failed to create menu") );
278 menu->SetButtonWidget(w);
279 }
280
281 //menu->SetMenuBar(this);
282
283 m_titles.Add(title);
284
285 return wxMenuBarBase::Append(menu, title);
286 }
287
288 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
289 {
290 if ( !wxMenuBarBase::Insert(pos, menu, title) )
291 return FALSE;
292
293 wxFAIL_MSG(wxT("TODO"));
294
295 return FALSE;
296 }
297
298 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
299 {
300 if ( !wxMenuBarBase::Replace(pos, menu, title) )
301 return NULL;
302
303 wxFAIL_MSG(wxT("TODO"));
304
305 return NULL;
306 }
307
308 wxMenu *wxMenuBar::Remove(size_t pos)
309 {
310 wxMenu *menu = wxMenuBarBase::Remove(pos);
311 if ( !menu )
312 return NULL;
313
314 if ( m_menuBarFrame )
315 menu->DestroyMenu(TRUE);
316
317 menu->SetMenuBar(NULL);
318
319 m_titles.RemoveAt(pos);
320
321 return menu;
322 }
323
324 // Find the menu menuString, item itemString, and return the item id.
325 // Returns -1 if none found.
326 int wxMenuBar::FindMenuItem (const wxString& menuString, const wxString& itemString) const
327 {
328 char buf1[200];
329 char buf2[200];
330 wxStripMenuCodes (wxConstCast(menuString.c_str(), char), buf1);
331
332 size_t menuCount = GetMenuCount();
333 for (size_t i = 0; i < menuCount; i++)
334 {
335 wxStripMenuCodes (wxConstCast(m_titles[i].c_str(), char), buf2);
336 if (strcmp (buf1, buf2) == 0)
337 return m_menus[i]->FindItem (itemString);
338 }
339 return -1;
340 }
341
342 wxMenuItem *wxMenuBar::FindItem(int id, wxMenu ** itemMenu) const
343 {
344 if (itemMenu)
345 *itemMenu = NULL;
346
347 wxMenuItem *item = NULL;
348 size_t menuCount = GetMenuCount();
349 for (size_t i = 0; i < menuCount; i++)
350 if ((item = m_menus[i]->FindItem(id, itemMenu)))
351 return item;
352 return NULL;
353 }
354
355 // Create menubar
356 bool wxMenuBar::CreateMenuBar(wxFrame* parent)
357 {
358 if (m_mainWidget)
359 {
360 XtVaSetValues((Widget) parent->GetMainWidget(), XmNmenuBar, (Widget) m_mainWidget, NULL);
361 /*
362 if (!XtIsManaged((Widget) m_mainWidget))
363 XtManageChild((Widget) m_mainWidget);
364 */
365 XtMapWidget((Widget) m_mainWidget);
366 return TRUE;
367 }
368
369 Widget menuBarW = XmCreateMenuBar ((Widget) parent->GetMainWidget(), "MenuBar", NULL, 0);
370 m_mainWidget = (WXWidget) menuBarW;
371
372 size_t menuCount = GetMenuCount();
373 for (size_t i = 0; i < menuCount; i++)
374 {
375 wxMenu *menu = GetMenu(i);
376 wxString title(m_titles[i]);
377 menu->SetButtonWidget(menu->CreateMenu (this, menuBarW, menu, title, TRUE));
378
379 if (strcmp (wxStripMenuCodes(title), "Help") == 0)
380 XtVaSetValues ((Widget) menuBarW, XmNmenuHelpWidget, (Widget) menu->GetButtonWidget(), NULL);
381
382 // tear off menu support
383 #if (XmVersion >= 1002)
384 if ( menu->IsTearOff() )
385 {
386 XtVaSetValues(GetWidget(menu),
387 XmNtearOffModel, XmTEAR_OFF_ENABLED,
388 NULL);
389 Widget tearOff = XmGetTearOffControl(GetWidget(menu));
390 wxDoChangeForegroundColour((Widget) tearOff, m_foregroundColour);
391 wxDoChangeBackgroundColour((Widget) tearOff, m_backgroundColour, TRUE);
392 #endif
393 }
394 }
395
396 SetBackgroundColour(m_backgroundColour);
397 SetForegroundColour(m_foregroundColour);
398 SetFont(m_font);
399
400 XtVaSetValues((Widget) parent->GetMainWidget(), XmNmenuBar, (Widget) m_mainWidget, NULL);
401 XtRealizeWidget ((Widget) menuBarW);
402 XtManageChild ((Widget) menuBarW);
403 SetMenuBarFrame(parent);
404
405 return TRUE;
406 }
407
408 // Destroy menubar, but keep data structures intact so we can recreate it.
409 bool wxMenuBar::DestroyMenuBar()
410 {
411 if (!m_mainWidget)
412 {
413 SetMenuBarFrame((wxFrame*) NULL);
414 return FALSE;
415 }
416
417 XtUnmanageChild ((Widget) m_mainWidget);
418 XtUnrealizeWidget ((Widget) m_mainWidget);
419
420 size_t menuCount = GetMenuCount();
421 for (size_t i = 0; i < menuCount; i++)
422 {
423 wxMenu *menu = GetMenu(i);
424 menu->DestroyMenu(TRUE);
425
426 }
427 XtDestroyWidget((Widget) m_mainWidget);
428 m_mainWidget = (WXWidget) 0;
429
430 SetMenuBarFrame((wxFrame*) NULL);
431
432 return TRUE;
433 }
434
435 // Since PopupMenu under Motif stills grab right mouse button events
436 // after it was closed, we need to delete the associated widgets to
437 // allow next PopUpMenu to appear...
438 void wxMenu::DestroyWidgetAndDetach()
439 {
440 if (GetMainWidget())
441 {
442 wxMenu *menuParent = GetParent();
443 if ( menuParent )
444 {
445 wxMenuItemList::Node *node = menuParent->GetMenuItems().GetFirst();
446 while ( node )
447 {
448 if ( node->GetData()->GetSubMenu() == this )
449 {
450 menuParent->GetMenuItems().DeleteNode(node);
451
452 break;
453 }
454
455 node = node->GetNext();
456 }
457 }
458
459 DestroyMenu(TRUE);
460 }
461
462 // Mark as no longer popped up
463 m_menuId = -1;
464 }
465
466 /*
467 * Create a popup or pulldown menu.
468 * Submenus of a popup will be pulldown.
469 *
470 */
471
472 WXWidget wxMenu::CreateMenu (wxMenuBar * menuBar, WXWidget parent, wxMenu * topMenu, const wxString& title, bool pullDown)
473 {
474 Widget menu = (Widget) 0;
475 Widget buttonWidget = (Widget) 0;
476 Arg args[5];
477 XtSetArg (args[0], XmNnumColumns, m_numColumns);
478 XtSetArg (args[1], XmNpacking, (m_numColumns > 1) ? XmPACK_COLUMN : XmPACK_TIGHT);
479
480 if (!pullDown)
481 {
482 menu = XmCreatePopupMenu ((Widget) parent, "popup", args, 2);
483 #if 0
484 XtAddCallback(menu,
485 XmNunmapCallback,
486 (XtCallbackProc)wxMenuPopdownCallback,
487 (XtPointer)this);
488 #endif
489 }
490 else
491 {
492 char mnem = wxFindMnemonic (title);
493 menu = XmCreatePulldownMenu ((Widget) parent, "pulldown", args, 2);
494
495 wxString title2(wxStripMenuCodes(title));
496 wxXmString label_str(title2);
497 buttonWidget = XtVaCreateManagedWidget(title2,
498 #if wxUSE_GADGETS
499 xmCascadeButtonGadgetClass, (Widget) parent,
500 #else
501 xmCascadeButtonWidgetClass, (Widget) parent,
502 #endif
503 XmNlabelString, label_str(),
504 XmNsubMenuId, menu,
505 NULL);
506
507 if (mnem != 0)
508 XtVaSetValues (buttonWidget, XmNmnemonic, mnem, NULL);
509 }
510
511 m_menuWidget = (WXWidget) menu;
512
513 m_menuBar = menuBar;
514 m_topLevelMenu = topMenu;
515
516 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
517 node;
518 node = node->GetNext() )
519 {
520 wxMenuItem *item = node->GetData();
521
522 item->CreateItem(menu, menuBar, topMenu);
523 }
524
525 SetBackgroundColour(m_backgroundColour);
526 SetForegroundColour(m_foregroundColour);
527 SetFont(m_font);
528
529 return buttonWidget;
530 }
531
532 // Destroys the Motif implementation of the menu,
533 // but maintains the wxWindows data structures so we can
534 // do a CreateMenu again.
535 void wxMenu::DestroyMenu (bool full)
536 {
537 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
538 node;
539 node = node->GetNext() )
540 {
541 wxMenuItem *item = node->GetData();
542 item->SetMenuBar((wxMenuBar*) NULL);
543
544 item->DestroyItem(full);
545 }
546
547 if (m_buttonWidget)
548 {
549 if (full)
550 {
551 XtVaSetValues((Widget) m_buttonWidget, XmNsubMenuId, NULL, NULL);
552 XtDestroyWidget ((Widget) m_buttonWidget);
553 m_buttonWidget = (WXWidget) 0;
554 }
555 }
556 if (m_menuWidget && full)
557 {
558 XtDestroyWidget((Widget) m_menuWidget);
559 m_menuWidget = (WXWidget) NULL;
560 }
561 }
562
563 WXWidget wxMenu::FindMenuItem (int id, wxMenuItem ** it) const
564 {
565 if (id == m_menuId)
566 {
567 if (it)
568 *it = (wxMenuItem*) NULL;
569 return m_buttonWidget;
570 }
571
572 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
573 node;
574 node = node->GetNext() )
575 {
576 wxMenuItem *item = node->GetData ();
577 if (item->GetId() == id)
578 {
579 if (it)
580 *it = item;
581 return item->GetButtonWidget();
582 }
583
584 if (item->GetSubMenu())
585 {
586 WXWidget w = item->GetSubMenu()->FindMenuItem (id, it);
587 if (w)
588 {
589 return w;
590 }
591 }
592 }
593
594 if (it)
595 *it = (wxMenuItem*) NULL;
596 return (WXWidget) NULL;
597 }
598
599 void wxMenu::SetBackgroundColour(const wxColour& col)
600 {
601 m_backgroundColour = col;
602 if (m_menuWidget)
603 wxDoChangeBackgroundColour(m_menuWidget, (wxColour&) col);
604 if (m_buttonWidget)
605 wxDoChangeBackgroundColour(m_buttonWidget, (wxColour&) col, TRUE);
606
607 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
608 node;
609 node = node->GetNext() )
610 {
611 wxMenuItem* item = node->GetData();
612 if (item->GetButtonWidget())
613 {
614 // This crashes because it uses gadgets
615 // wxDoChangeBackgroundColour(item->GetButtonWidget(), (wxColour&) col, TRUE);
616 }
617 if (item->GetSubMenu())
618 item->GetSubMenu()->SetBackgroundColour((wxColour&) col);
619 }
620 }
621
622 void wxMenu::SetForegroundColour(const wxColour& col)
623 {
624 m_foregroundColour = col;
625 if (m_menuWidget)
626 wxDoChangeForegroundColour(m_menuWidget, (wxColour&) col);
627 if (m_buttonWidget)
628 wxDoChangeForegroundColour(m_buttonWidget, (wxColour&) col);
629
630 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
631 node;
632 node = node->GetNext() )
633 {
634 wxMenuItem* item = node->GetData();
635 if (item->GetButtonWidget())
636 {
637 // This crashes because it uses gadgets
638 // wxDoChangeForegroundColour(item->GetButtonWidget(), (wxColour&) col);
639 }
640 if (item->GetSubMenu())
641 item->GetSubMenu()->SetForegroundColour((wxColour&) col);
642 }
643 }
644
645 void wxMenu::ChangeFont(bool keepOriginalSize)
646 {
647 // Lesstif 0.87 hangs here, but 0.93 does not
648 #if !wxCHECK_LESSTIF() || wxCHECK_LESSTIF_VERSION( 0, 93 )
649 if (!m_font.Ok() || !m_menuWidget)
650 return;
651
652 WXFontType fontType = m_font.GetFontType(XtDisplay((Widget) m_menuWidget));
653
654 XtVaSetValues ((Widget) m_menuWidget,
655 wxFont::GetFontTag(), fontType,
656 NULL);
657 if (m_buttonWidget)
658 {
659 XtVaSetValues ((Widget) m_buttonWidget,
660 wxFont::GetFontTag(), fontType,
661 NULL);
662 }
663
664 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
665 node;
666 node = node->GetNext() )
667 {
668 wxMenuItem* item = node->GetData();
669 if (m_menuWidget && item->GetButtonWidget() && m_font.Ok())
670 {
671 XtVaSetValues ((Widget) item->GetButtonWidget(),
672 wxFont::GetFontTag(), fontType,
673 NULL);
674 }
675 if (item->GetSubMenu())
676 item->GetSubMenu()->ChangeFont(keepOriginalSize);
677 }
678 #endif
679 }
680
681 void wxMenu::SetFont(const wxFont& font)
682 {
683 m_font = font;
684 ChangeFont();
685 }
686
687 bool wxMenuBar::SetBackgroundColour(const wxColour& col)
688 {
689 m_backgroundColour = col;
690 if (m_mainWidget)
691 wxDoChangeBackgroundColour(m_mainWidget, (wxColour&) col);
692
693 size_t menuCount = GetMenuCount();
694 for (size_t i = 0; i < menuCount; i++)
695 m_menus[i]->SetBackgroundColour((wxColour&) col);
696
697 return TRUE;
698 }
699
700 bool wxMenuBar::SetForegroundColour(const wxColour& col)
701 {
702 m_foregroundColour = col;
703 if (m_mainWidget)
704 wxDoChangeForegroundColour(m_mainWidget, (wxColour&) col);
705
706 size_t menuCount = GetMenuCount();
707 for (size_t i = 0; i < menuCount; i++)
708 m_menus[i]->SetForegroundColour((wxColour&) col);
709
710 return TRUE;
711 }
712
713 void wxMenuBar::ChangeFont(bool WXUNUSED(keepOriginalSize))
714 {
715 // Nothing to do for menubar, fonts are kept in wxMenus
716 }
717
718 bool wxMenuBar::SetFont(const wxFont& font)
719 {
720 m_font = font;
721 ChangeFont();
722
723 size_t menuCount = GetMenuCount();
724 for (size_t i = 0; i < menuCount; i++)
725 m_menus[i]->SetFont(font);
726
727 return TRUE;
728 }
729