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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: choice.cpp | |
3 | // Purpose: wxChoice | |
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 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
13 | #pragma implementation "choice.h" | |
14 | #endif | |
15 | ||
16 | // For compilers that support precompilation, includes "wx.h". | |
17 | #include "wx/wxprec.h" | |
18 | ||
19 | #ifdef __VMS | |
20 | #define XtDisplay XTDISPLAY | |
21 | #define XtParent XTPARENT | |
22 | #endif | |
23 | ||
24 | #include "wx/defs.h" | |
25 | ||
26 | #include "wx/choice.h" | |
27 | #include "wx/utils.h" | |
28 | #include "wx/arrstr.h" | |
29 | ||
30 | #ifdef __VMS__ | |
31 | #pragma message disable nosimpint | |
32 | #endif | |
33 | #include <Xm/Xm.h> | |
34 | #include <Xm/PushBG.h> | |
35 | #include <Xm/PushB.h> | |
36 | #include <Xm/RowColumn.h> | |
37 | #ifdef __VMS__ | |
38 | #pragma message enable nosimpint | |
39 | #endif | |
40 | ||
41 | #include "wx/motif/private.h" | |
42 | ||
43 | #define WIDTH_OVERHEAD 48 | |
44 | #define WIDTH_OVERHEAD_SUBTRACT 40 | |
45 | #define HEIGHT_OVERHEAD 15 | |
46 | ||
47 | IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl) | |
48 | ||
49 | void wxChoiceCallback (Widget w, XtPointer clientData, | |
50 | XtPointer ptr); | |
51 | ||
52 | wxChoice::wxChoice() | |
53 | { | |
54 | Init(); | |
55 | } | |
56 | ||
57 | void wxChoice::Init() | |
58 | { | |
59 | m_noStrings = 0; | |
60 | m_buttonWidget = (WXWidget) 0; | |
61 | m_menuWidget = (WXWidget) 0; | |
62 | m_formWidget = (WXWidget) 0; | |
63 | } | |
64 | ||
65 | bool wxChoice::Create(wxWindow *parent, wxWindowID id, | |
66 | const wxPoint& pos, | |
67 | const wxSize& size, | |
68 | int n, const wxString choices[], | |
69 | long style, | |
70 | const wxValidator& validator, | |
71 | const wxString& name) | |
72 | { | |
73 | if ( !CreateControl(parent, id, pos, size, style, validator, name) ) | |
74 | return FALSE; | |
75 | ||
76 | Widget parentWidget = (Widget) parent->GetClientWidget(); | |
77 | ||
78 | m_formWidget = (WXWidget) XtVaCreateManagedWidget(name.c_str(), | |
79 | xmRowColumnWidgetClass, parentWidget, | |
80 | XmNmarginHeight, 0, | |
81 | XmNmarginWidth, 0, | |
82 | XmNpacking, XmPACK_TIGHT, | |
83 | XmNorientation, XmHORIZONTAL, | |
84 | XmNresizeWidth, False, | |
85 | XmNresizeHeight, False, | |
86 | NULL); | |
87 | ||
88 | XtVaSetValues ((Widget) m_formWidget, XmNspacing, 0, NULL); | |
89 | ||
90 | /* | |
91 | * Create the popup menu | |
92 | */ | |
93 | m_menuWidget = (WXWidget) XmCreatePulldownMenu ((Widget) m_formWidget, | |
94 | "choiceMenu", NULL, 0); | |
95 | ||
96 | if (n > 0) | |
97 | { | |
98 | int i; | |
99 | for (i = 0; i < n; i++) | |
100 | Append (choices[i]); | |
101 | } | |
102 | ||
103 | /* | |
104 | * Create button | |
105 | */ | |
106 | Arg args[10]; | |
107 | Cardinal argcnt = 0; | |
108 | ||
109 | XtSetArg (args[argcnt], XmNsubMenuId, (Widget) m_menuWidget); ++argcnt; | |
110 | XtSetArg (args[argcnt], XmNmarginWidth, 0); ++argcnt; | |
111 | XtSetArg (args[argcnt], XmNmarginHeight, 0); ++argcnt; | |
112 | XtSetArg (args[argcnt], XmNpacking, XmPACK_TIGHT); ++argcnt; | |
113 | m_buttonWidget = (WXWidget) XmCreateOptionMenu ((Widget) m_formWidget, | |
114 | "choiceButton", | |
115 | args, argcnt); | |
116 | ||
117 | m_mainWidget = m_buttonWidget; | |
118 | ||
119 | XtManageChild ((Widget) m_buttonWidget); | |
120 | ||
121 | // New code from Roland Haenel (roland_haenel@ac.cybercity.de) | |
122 | // Some time ago, I reported a problem with wxChoice-items under | |
123 | // Linux and Motif 2.0 (they caused sporadic GPFs). Now it seems | |
124 | // that I have found the code responsible for this behaviour. | |
125 | #if XmVersion >= 1002 | |
126 | #if XmVersion < 2000 | |
127 | // JACS, 24/1/99: this seems to cause a malloc crash later on, e.g. | |
128 | // in controls sample. | |
129 | // | |
130 | // Widget optionLabel = XmOptionLabelGadget ((Widget) m_buttonWidget); | |
131 | // XtUnmanageChild (optionLabel); | |
132 | #endif | |
133 | #endif | |
134 | ||
135 | wxSize bestSize = GetBestSize(); | |
136 | if( size.x > 0 ) bestSize.x = size.x; | |
137 | if( size.y > 0 ) bestSize.y = size.y; | |
138 | ||
139 | XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL); | |
140 | ||
141 | ChangeFont(FALSE); | |
142 | ChangeBackgroundColour(); | |
143 | ||
144 | AttachWidget (parent, m_buttonWidget, m_formWidget, | |
145 | pos.x, pos.y, bestSize.x, bestSize.y); | |
146 | ||
147 | return TRUE; | |
148 | } | |
149 | ||
150 | bool wxChoice::Create(wxWindow *parent, wxWindowID id, | |
151 | const wxPoint& pos, | |
152 | const wxSize& size, | |
153 | const wxArrayString& choices, | |
154 | long style, | |
155 | const wxValidator& validator, | |
156 | const wxString& name) | |
157 | { | |
158 | wxCArrayString chs(choices); | |
159 | return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(), | |
160 | style, validator, name); | |
161 | } | |
162 | ||
163 | wxChoice::~wxChoice() | |
164 | { | |
165 | // For some reason destroying the menuWidget | |
166 | // can cause crashes on some machines. It will | |
167 | // be deleted implicitly by deleting the parent form | |
168 | // anyway. | |
169 | // XtDestroyWidget (menuWidget); | |
170 | ||
171 | if (GetMainWidget()) | |
172 | { | |
173 | DetachWidget(GetMainWidget()); // Removes event handlers | |
174 | DetachWidget(m_formWidget); | |
175 | ||
176 | XtDestroyWidget((Widget) m_formWidget); | |
177 | m_formWidget = (WXWidget) 0; | |
178 | ||
179 | // Presumably the other widgets have been deleted now, via the form | |
180 | m_mainWidget = (WXWidget) 0; | |
181 | m_buttonWidget = (WXWidget) 0; | |
182 | } | |
183 | if ( HasClientObjectData() ) | |
184 | m_clientDataDict.DestroyData(); | |
185 | } | |
186 | ||
187 | int wxChoice::DoAppend(const wxString& item) | |
188 | { | |
189 | Widget w = XtVaCreateManagedWidget (wxStripMenuCodes(item), | |
190 | #if USE_GADGETS | |
191 | xmPushButtonGadgetClass, (Widget) m_menuWidget, | |
192 | #else | |
193 | xmPushButtonWidgetClass, (Widget) m_menuWidget, | |
194 | #endif | |
195 | NULL); | |
196 | ||
197 | wxDoChangeBackgroundColour((WXWidget) w, m_backgroundColour); | |
198 | ||
199 | if( m_font.Ok() ) | |
200 | wxDoChangeFont( w, m_font ); | |
201 | ||
202 | m_widgetArray.Add(w); | |
203 | ||
204 | char mnem = wxFindMnemonic (item); | |
205 | if (mnem != 0) | |
206 | XtVaSetValues (w, XmNmnemonic, mnem, NULL); | |
207 | ||
208 | XtAddCallback (w, XmNactivateCallback, | |
209 | (XtCallbackProc) wxChoiceCallback, | |
210 | (XtPointer) this); | |
211 | ||
212 | if (m_noStrings == 0 && m_buttonWidget) | |
213 | { | |
214 | XtVaSetValues ((Widget) m_buttonWidget, XmNmenuHistory, w, NULL); | |
215 | Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget); | |
216 | wxXmString text( item ); | |
217 | XtVaSetValues (label, | |
218 | XmNlabelString, text(), | |
219 | NULL); | |
220 | } | |
221 | m_stringList.Add(item); | |
222 | m_noStrings ++; | |
223 | ||
224 | return GetCount() - 1; | |
225 | } | |
226 | ||
227 | int wxChoice::DoInsert(const wxString& item, int pos) | |
228 | { | |
229 | wxCHECK_MSG(FALSE, -1, wxT("insert not implemented")); | |
230 | ||
231 | // wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index")); | |
232 | // if (pos == GetCount()) return DoAppend(item); | |
233 | } | |
234 | ||
235 | void wxChoice::Delete(int n) | |
236 | { | |
237 | Widget w = (Widget)m_widgetArray[n]; | |
238 | XtRemoveCallback(w, XmNactivateCallback, (XtCallbackProc)wxChoiceCallback, | |
239 | (XtPointer)this); | |
240 | m_stringList.Erase(m_stringList.Item(n)); | |
241 | m_widgetArray.RemoveAt(size_t(n)); | |
242 | m_clientDataDict.Delete(n, HasClientObjectData()); | |
243 | ||
244 | XtDestroyWidget(w); | |
245 | m_noStrings --; | |
246 | } | |
247 | ||
248 | void wxChoice::Clear() | |
249 | { | |
250 | m_stringList.Clear (); | |
251 | size_t i; | |
252 | for (i = 0; i < m_noStrings; i++) | |
253 | { | |
254 | XtRemoveCallback((Widget) m_widgetArray[i], | |
255 | XmNactivateCallback, (XtCallbackProc)wxChoiceCallback, | |
256 | (XtPointer)this); | |
257 | XtUnmanageChild ((Widget) m_widgetArray[i]); | |
258 | XtDestroyWidget ((Widget) m_widgetArray[i]); | |
259 | } | |
260 | m_widgetArray.Clear(); | |
261 | if (m_buttonWidget) | |
262 | XtVaSetValues ((Widget) m_buttonWidget, | |
263 | XmNmenuHistory, (Widget) NULL, | |
264 | NULL); | |
265 | ||
266 | if ( HasClientObjectData() ) | |
267 | m_clientDataDict.DestroyData(); | |
268 | ||
269 | m_noStrings = 0; | |
270 | } | |
271 | ||
272 | int wxChoice::GetSelection() const | |
273 | { | |
274 | XmString text; | |
275 | Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget); | |
276 | XtVaGetValues (label, | |
277 | XmNlabelString, &text, | |
278 | NULL); | |
279 | wxXmString freeMe(text); | |
280 | wxString s = wxXmStringToString( text ); | |
281 | ||
282 | if (!s.IsEmpty()) | |
283 | { | |
284 | int i = 0; | |
285 | for (wxStringList::compatibility_iterator node = m_stringList.GetFirst (); | |
286 | node; node = node->GetNext ()) | |
287 | { | |
288 | if (wxStrcmp(node->GetData(), s.c_str()) == 0) | |
289 | { | |
290 | return i; | |
291 | } | |
292 | else | |
293 | i++; | |
294 | } // for() | |
295 | ||
296 | return -1; | |
297 | } | |
298 | return -1; | |
299 | } | |
300 | ||
301 | void wxChoice::SetSelection(int n) | |
302 | { | |
303 | m_inSetValue = TRUE; | |
304 | ||
305 | wxStringList::compatibility_iterator node = m_stringList.Item(n); | |
306 | if (node) | |
307 | { | |
308 | #if 0 | |
309 | Dimension selectionWidth, selectionHeight; | |
310 | #endif | |
311 | wxXmString text( node->GetData() ); | |
312 | // MBN: this seems silly, at best, and causes wxChoices to be clipped: | |
313 | // will remove "soon" | |
314 | #if 0 | |
315 | XtVaGetValues ((Widget) m_widgetArray[n], | |
316 | XmNwidth, &selectionWidth, | |
317 | XmNheight, &selectionHeight, | |
318 | NULL); | |
319 | #endif | |
320 | Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget); | |
321 | XtVaSetValues (label, | |
322 | XmNlabelString, text(), | |
323 | NULL); | |
324 | #if 0 | |
325 | XtVaSetValues ((Widget) m_buttonWidget, | |
326 | XmNwidth, selectionWidth, XmNheight, selectionHeight, | |
327 | XmNmenuHistory, (Widget) m_widgetArray[n], NULL); | |
328 | #endif | |
329 | } | |
330 | m_inSetValue = FALSE; | |
331 | } | |
332 | ||
333 | int wxChoice::FindString(const wxString& s) const | |
334 | { | |
335 | int i = 0; | |
336 | for (wxStringList::compatibility_iterator node = m_stringList.GetFirst(); | |
337 | node; node = node->GetNext ()) | |
338 | { | |
339 | if (s == node->GetData()) | |
340 | return i; | |
341 | ||
342 | i++; | |
343 | } | |
344 | ||
345 | return -1; | |
346 | } | |
347 | ||
348 | wxString wxChoice::GetString(int n) const | |
349 | { | |
350 | wxStringList::compatibility_iterator node = m_stringList.Item(n); | |
351 | if (node) | |
352 | return node->GetData(); | |
353 | else | |
354 | return wxEmptyString; | |
355 | } | |
356 | ||
357 | void wxChoice::SetColumns(int n) | |
358 | { | |
359 | if (n<1) n = 1 ; | |
360 | ||
361 | short numColumns = n ; | |
362 | Arg args[3]; | |
363 | ||
364 | XtSetArg(args[0], XmNnumColumns, numColumns); | |
365 | XtSetArg(args[1], XmNpacking, XmPACK_COLUMN); | |
366 | XtSetValues((Widget) m_menuWidget,args,2) ; | |
367 | } | |
368 | ||
369 | int wxChoice::GetColumns(void) const | |
370 | { | |
371 | short numColumns ; | |
372 | ||
373 | XtVaGetValues((Widget) m_menuWidget,XmNnumColumns,&numColumns,NULL) ; | |
374 | return numColumns ; | |
375 | } | |
376 | ||
377 | void wxChoice::SetFocus() | |
378 | { | |
379 | XmProcessTraversal(XtParent((Widget)m_mainWidget), XmTRAVERSE_CURRENT); | |
380 | } | |
381 | ||
382 | void wxChoice::DoSetSize(int x, int y, int width, int height, int sizeFlags) | |
383 | { | |
384 | XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_ANY, NULL); | |
385 | bool managed = XtIsManaged((Widget) m_formWidget); | |
386 | ||
387 | if (managed) | |
388 | XtUnmanageChild ((Widget) m_formWidget); | |
389 | ||
390 | int actualWidth = width - WIDTH_OVERHEAD_SUBTRACT, | |
391 | actualHeight = height - HEIGHT_OVERHEAD; | |
392 | ||
393 | if (width > -1) | |
394 | { | |
395 | size_t i; | |
396 | for (i = 0; i < m_noStrings; i++) | |
397 | XtVaSetValues ((Widget) m_widgetArray[i], | |
398 | XmNwidth, actualWidth, | |
399 | NULL); | |
400 | XtVaSetValues ((Widget) m_buttonWidget, XmNwidth, actualWidth, | |
401 | NULL); | |
402 | } | |
403 | if (height > -1) | |
404 | { | |
405 | #if 0 | |
406 | size_t i; | |
407 | for (i = 0; i < m_noStrings; i++) | |
408 | XtVaSetValues ((Widget) m_widgetArray[i], | |
409 | XmNheight, actualHeight, | |
410 | NULL); | |
411 | #endif | |
412 | XtVaSetValues ((Widget) m_buttonWidget, XmNheight, actualHeight, | |
413 | NULL); | |
414 | } | |
415 | ||
416 | if (managed) | |
417 | XtManageChild ((Widget) m_formWidget); | |
418 | XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL); | |
419 | ||
420 | wxControl::DoSetSize (x, y, width, height, sizeFlags); | |
421 | } | |
422 | ||
423 | void wxChoice::Command(wxCommandEvent & event) | |
424 | { | |
425 | SetSelection (event.GetInt()); | |
426 | ProcessCommand (event); | |
427 | } | |
428 | ||
429 | void wxChoiceCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr)) | |
430 | { | |
431 | wxChoice *item = (wxChoice *) clientData; | |
432 | if (item) | |
433 | { | |
434 | if (item->InSetValue()) | |
435 | return; | |
436 | ||
437 | int n = item->GetWidgets().Index(w); | |
438 | if (n != wxNOT_FOUND) | |
439 | { | |
440 | wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, item->GetId()); | |
441 | event.SetEventObject(item); | |
442 | event.m_commandInt = n; | |
443 | event.m_commandString = item->GetStrings().Item(n)->GetData(); | |
444 | if ( item->HasClientObjectData() ) | |
445 | event.SetClientObject( item->GetClientObject(n) ); | |
446 | else if ( item->HasClientUntypedData() ) | |
447 | event.SetClientData( item->GetClientData(n) ); | |
448 | item->ProcessCommand (event); | |
449 | } | |
450 | } | |
451 | } | |
452 | ||
453 | void wxChoice::ChangeFont(bool keepOriginalSize) | |
454 | { | |
455 | // Note that this causes the widget to be resized back | |
456 | // to its original size! We therefore have to set the size | |
457 | // back again. TODO: a better way in Motif? | |
458 | if (m_font.Ok()) | |
459 | { | |
460 | int width, height, width1, height1; | |
461 | GetSize(& width, & height); | |
462 | ||
463 | WXFontType fontType = | |
464 | m_font.GetFontType(XtDisplay((Widget) m_mainWidget)); | |
465 | WXString fontTag = wxFont::GetFontTag(); | |
466 | ||
467 | XtVaSetValues ((Widget) m_formWidget, fontTag, fontType, NULL); | |
468 | XtVaSetValues ((Widget) m_buttonWidget, fontTag, fontType, NULL); | |
469 | ||
470 | for( size_t i = 0; i < m_noStrings; ++i ) | |
471 | XtVaSetValues( (Widget)m_widgetArray[i], | |
472 | fontTag, fontType, | |
473 | NULL ); | |
474 | ||
475 | GetSize(& width1, & height1); | |
476 | if (keepOriginalSize && (width != width1 || height != height1)) | |
477 | { | |
478 | SetSize(-1, -1, width, height); | |
479 | } | |
480 | } | |
481 | } | |
482 | ||
483 | void wxChoice::ChangeBackgroundColour() | |
484 | { | |
485 | wxDoChangeBackgroundColour(m_formWidget, m_backgroundColour); | |
486 | wxDoChangeBackgroundColour(m_buttonWidget, m_backgroundColour); | |
487 | wxDoChangeBackgroundColour(m_menuWidget, m_backgroundColour); | |
488 | size_t i; | |
489 | for (i = 0; i < m_noStrings; i++) | |
490 | wxDoChangeBackgroundColour(m_widgetArray[i], m_backgroundColour); | |
491 | } | |
492 | ||
493 | void wxChoice::ChangeForegroundColour() | |
494 | { | |
495 | wxDoChangeForegroundColour(m_formWidget, m_foregroundColour); | |
496 | wxDoChangeForegroundColour(m_buttonWidget, m_foregroundColour); | |
497 | wxDoChangeForegroundColour(m_menuWidget, m_foregroundColour); | |
498 | size_t i; | |
499 | for (i = 0; i < m_noStrings; i++) | |
500 | wxDoChangeForegroundColour(m_widgetArray[i], m_foregroundColour); | |
501 | } | |
502 | ||
503 | int wxChoice::GetCount() const | |
504 | { | |
505 | return m_noStrings; | |
506 | } | |
507 | ||
508 | void wxChoice::DoSetItemClientData(int n, void* clientData) | |
509 | { | |
510 | m_clientDataDict.Set(n, (wxClientData*)clientData, FALSE); | |
511 | } | |
512 | ||
513 | void* wxChoice::DoGetItemClientData(int n) const | |
514 | { | |
515 | return (void*)m_clientDataDict.Get(n); | |
516 | } | |
517 | ||
518 | void wxChoice::DoSetItemClientObject(int n, wxClientData* clientData) | |
519 | { | |
520 | // don't delete, wxItemContainer does that for us | |
521 | m_clientDataDict.Set(n, clientData, FALSE); | |
522 | } | |
523 | ||
524 | wxClientData* wxChoice::DoGetItemClientObject(int n) const | |
525 | { | |
526 | return m_clientDataDict.Get(n); | |
527 | } | |
528 | ||
529 | void wxChoice::SetString(int WXUNUSED(n), const wxString& WXUNUSED(s)) | |
530 | { | |
531 | wxFAIL_MSG( wxT("wxChoice::SetString not implemented") ); | |
532 | } | |
533 | ||
534 | wxSize wxChoice::GetItemsSize() const | |
535 | { | |
536 | int x, y, mx = 0, my = 0; | |
537 | ||
538 | // get my | |
539 | GetTextExtent( "|", &x, &my ); | |
540 | ||
541 | wxStringList::compatibility_iterator curr = m_stringList.GetFirst(); | |
542 | while( curr ) | |
543 | { | |
544 | GetTextExtent( curr->GetData(), &x, &y ); | |
545 | mx = wxMax( mx, x ); | |
546 | my = wxMax( my, y ); | |
547 | curr = curr->GetNext(); | |
548 | } | |
549 | ||
550 | return wxSize( mx, my ); | |
551 | } | |
552 | ||
553 | wxSize wxChoice::DoGetBestSize() const | |
554 | { | |
555 | wxSize items = GetItemsSize(); | |
556 | // FIXME arbitrary constants | |
557 | return wxSize( ( items.x ? items.x + WIDTH_OVERHEAD : 120 ), | |
558 | items.y + HEIGHT_OVERHEAD ); | |
559 | } |