2 * Combox: A combination of two objects (a button and a browser) is
3 * encapsulated to get a combobox-like object. All XForms
4 * functions are hidden.
6 * GNU Copyleft 1996 Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
9 * Dependencies: Only XForms, but created to be used with LyX.
15 * 2/06/1996, Alejandro Aguilar Sierra
18 * 4/06/1996, Alejandro Aguilar Sierra
19 * Added droplist mode (a button with a black down arrow at right)
20 * and support for middle and right buttons, as XForms choice object.
22 * 6/06/1996, Lars Gullik Bjønnes
23 * Added a combox with an input object. and a pre and a post handle.
25 * 22/07/96, Alejandro Aguilar Sierra
26 * Assigned to the browser its own popup window. No more need of
27 * external pre and post handlers to simulate the wanted behaviour.
34 #pragma implementation
44 // These are C wrappers around static members of Combox, used as
45 // callbacks for xforms.
46 extern "C" void C_Combox_input_cb(FL_OBJECT *ob, long);
47 extern "C" void C_Combox_combo_cb(FL_OBJECT *ob, long data) ;
48 extern "C" int C_Combox_peek_event(FL_FORM * form, void *xev);
50 Combox::Combox(combox_type t)
51 : type(t), tabfolder1(0), tabfolder2(0)
72 if (browser) fl_clear_browser(browser);
74 if (type == FL_COMBOX_INPUT)
75 fl_set_input(label, "");
77 fl_set_object_label(label, "");
84 lyxerr[Debug::GUI] << "Button: " << button << endl;
86 fl_delete_object(button);
87 fl_free_object(button);
90 lyxerr[Debug::GUI] << "Label: " << label << endl;
91 if (label && label != button) {
92 fl_delete_object(label);
93 fl_free_object(label);
96 lyxerr[Debug::GUI] << "Form: " << form << endl;
97 lyxerr[Debug::GUI] << "Browser: " << browser << endl;
98 if (form && browser) {
99 fl_delete_object(browser);
100 fl_free_object(browser);
112 void Combox::addline(string const & text)
114 if (!browser) return;
115 fl_add_browser_line(browser, text.c_str());
117 // By default the first item is selected
120 if (type == FL_COMBOX_INPUT)
121 fl_set_input(label, text.c_str());
123 fl_set_object_label(label, text.c_str());
129 bool Combox::select_text(string const & t)
131 if (!browser || t.empty()) return false;
132 int const maxline = fl_get_browser_maxline(browser);
134 for (int i = 1; i <= maxline; ++i) {
135 if (t == fl_get_browser_line(browser, i)) {
140 return false; // t does not exist in browser
144 void Combox::select(int i)
146 if (!browser || !button) return;
147 if (i > 0 && i <= fl_get_browser_maxline(browser)) sel = i;
148 fl_deactivate_object(button);
150 if (type == FL_COMBOX_INPUT)
151 fl_set_input(label, fl_get_browser_line(browser, sel));
153 fl_set_object_label(label, fl_get_browser_line(browser, sel));
154 fl_activate_object(button);
158 void Combox::add(int x, int y, int w, int hmin, int hmax,
159 FL_OBJECT * tabfolder1_, FL_OBJECT * tabfolder2_)
161 // Store these for later use in working round an xforms bug in Show()
162 tabfolder1 = tabfolder1_;
163 tabfolder2 = tabfolder2_;
168 case FL_COMBOX_DROPLIST:
170 button = obj = fl_add_button(FL_NORMAL_BUTTON,
171 x+w-22, y, 22, hmin, "@2->");
172 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
173 fl_set_object_dblbuffer(obj, 1);
174 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
175 label = obj = fl_add_button(FL_NORMAL_TEXT, x, y, w-22, hmin, "");
176 fl_set_object_boxtype(obj, FL_DOWN_BOX);
177 fl_set_object_color(obj, FL_MCOL, FL_BLACK);
178 fl_set_object_lalign(obj, FL_ALIGN_CENTER|FL_ALIGN_INSIDE);
179 fl_set_object_dblbuffer(obj, 1);
180 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
183 case FL_COMBOX_NORMAL:
185 button = obj = fl_add_button(FL_NORMAL_BUTTON, x, y, w, hmin, "");
186 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
187 fl_set_object_boxtype(obj, FL_DOWN_BOX);
188 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
189 fl_set_object_color(obj, FL_MCOL, FL_BLACK);
193 case FL_COMBOX_INPUT:
195 button = obj = fl_add_button(FL_NORMAL_BUTTON,
196 x+w-22, y, 22, hmin, "@2->");
197 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
198 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
199 label = obj = fl_add_input(FL_NORMAL_INPUT, x, y, w-22, hmin, "");
200 fl_set_object_boxtype(obj, FL_DOWN_BOX);
201 fl_set_object_return(obj, FL_RETURN_END_CHANGED);
202 fl_set_object_callback(obj, C_Combox_input_cb, 0);
203 //fl_set_object_color(obj, FL_MCOL, FL_BLACK);
204 //fl_set_object_lalign(obj,FL_ALIGN_CENTER|FL_ALIGN_INSIDE);
209 label->u_vdata = this;
210 button->u_vdata = this;
212 // Hmm, it seems fl_create_browser is broken in xforms 0.86.
213 // We have to work around that by creating the dropped browser form
214 // at this point already. However, this means that we have
215 // to do a little hacking: (Asger)
216 FL_FORM * current_form = fl_current_form;
219 bw = w + 20; bh = hmax - hmin - 12;
221 form = fl_bgn_form(FL_NO_BOX, bw, bh);
222 browser = obj = fl_add_browser(FL_HOLD_BROWSER, 0, 0, bw, bh, "");
223 fl_set_object_boxtype(obj, FL_UP_BOX);
224 fl_set_object_color(obj, FL_MCOL, FL_YELLOW);
225 fl_set_object_gravity(obj, NorthWestGravity, NorthWestGravity);
226 fl_set_object_callback(obj, C_Combox_combo_cb, 2);
228 browser->u_vdata = this;
229 form->u_vdata = browser;
230 fl_register_raw_callback(form,
231 ButtonPressMask|KeyPressMask,
232 C_Combox_peek_event);
234 // And revert to adding to the old form (Asger)
235 fl_addto_form(current_form);
246 void Combox::Redraw()
248 if (browser) fl_redraw_object(browser);
249 if (button) fl_redraw_object(button);
250 if (label) fl_redraw_object(label);
258 XGetInputFocus(fl_get_display(), &save_window, &tmp); //BUG-Fix Dietmar
259 XFlush(fl_get_display());
260 if (button && type != FL_COMBOX_NORMAL) {
261 fl_set_object_label(button, "@2<-");
262 fl_redraw_object(button);
266 int y = label->y + label->h;
268 // This is a bug work around suggested by Steve Lamont on the
269 // xforms mailing list. It correctly positions the browser form
270 // after the main window has been moved.
271 // The bug only occurs in tabbed folders.
272 int folder_x, folder_y, folder_w, folder_h;
273 fl_get_folder_area( tabfolder1,
274 &folder_x, &folder_y,
275 &folder_w, &folder_h );
280 fl_get_folder_area( tabfolder2,
281 &folder_x, &folder_y,
282 &folder_w, &folder_h );
283 x += tabfolder2->form->x + folder_x;
284 y += tabfolder2->form->y + folder_y;
286 x += tabfolder1->form->x;
287 y += tabfolder1->form->y;
295 fl_set_form_position(form, x, y);
296 fl_show_form(form, FL_PLACE_POSITION, FL_NOBORDER, "");
298 fl_set_browser_topline(browser, sel);
299 fl_select_browser_line(browser, sel);
301 XGrabPointer(fl_get_display(), form->window, false,
302 ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
303 GrabModeAsync, GrabModeAsync,
305 XFlush(fl_get_display());
308 void Combox::Hide(int who)
310 if (!who && browser && label) {
311 sel = fl_get_browser(browser);
313 if (type == FL_COMBOX_INPUT)
314 fl_set_input(label, fl_get_browser_line(browser, sel));
316 fl_set_object_label(label,
317 fl_get_browser_line(browser, sel));
318 // if (callback) callback(sel, cb_arg);
320 XUngrabPointer(fl_get_display(), 0);
321 XFlush(fl_get_display());
322 if (!who && browser && label && callback)
323 callback(sel, cb_arg, this);
326 XSetInputFocus(fl_get_display(), save_window,
327 RevertToParent, CurrentTime); // BUG-FIX-Dietmar
328 XFlush(fl_get_display());
331 if (type != FL_COMBOX_NORMAL){
332 fl_set_object_label(button, "@2->");
333 fl_redraw_object(button);
340 void Combox::activate()
342 if (browser) fl_activate_object(browser);
343 if (button) fl_activate_object(button);
344 if (label) fl_activate_object(label);
348 void Combox::deactivate()
350 if (browser) fl_deactivate_object(browser);
351 if (button) fl_deactivate_object(button);
352 if (label) fl_deactivate_object(label);
356 void Combox::input_cb(FL_OBJECT * ob, long)
358 Combox * combo = static_cast<Combox*>(ob->u_vdata);
360 char const * text = fl_get_input(ob);
362 combo->addto(text ? string(text) : string());
363 combo->is_empty = false;
367 extern "C" void C_Combox_input_cb(FL_OBJECT * ob, long data)
369 Combox::input_cb(ob, data);
373 void Combox::combo_cb(FL_OBJECT * ob, long data)
375 Combox * combo = static_cast<Combox*>(ob->u_vdata);
379 int const i = combo->get();
380 switch (fl_get_button_numb(ob)) {
383 combo->select(i - 1);
385 combo->callback(combo->sel,
386 combo->cb_arg, combo);
391 combo->select(i + 1);
393 combo->callback(combo->sel,
394 combo->cb_arg, combo);
397 default: combo->Show(); break;
407 extern "C" void C_Combox_combo_cb(FL_OBJECT * ob, long data)
409 Combox::combo_cb(ob, data);
413 int Combox::peek_event(FL_FORM * form, void * xev)
415 FL_OBJECT * ob = static_cast<FL_OBJECT *>(form->u_vdata);
416 Combox * combo = static_cast<Combox*>(ob->u_vdata);
418 // I don't know why belowmouse does not work, but it doesn't. (Asger)
419 // Are we sure? Please verify. (Lgb)
420 if (static_cast<XEvent *>(xev)->type == ButtonPress && (
421 static_cast<XEvent *>(xev)->xbutton.x - ob->x < 0 ||
422 static_cast<XEvent *>(xev)->xbutton.x - ob->x > ob->w ||
423 static_cast<XEvent *>(xev)->xbutton.y - ob->y < 0 ||
424 static_cast<XEvent *>(xev)->xbutton.y - ob->y > ob->h)) {
429 if (static_cast<XEvent*>(xev)->type != KeyPress) return 0;
431 char s_r[10]; s_r[9] = '\0';
432 KeySym keysym_return;
433 XLookupString(&static_cast<XEvent*>(xev)->xkey, s_r, 10,
435 XFlush(fl_get_display());
436 switch (keysym_return) {
438 if (fl_get_browser(combo->browser) <
439 fl_get_browser_maxline(combo->browser))
440 fl_select_browser_line(combo->browser,
441 fl_get_browser(combo->browser)+1);
442 if (fl_get_browser(combo->browser)>=
443 fl_get_browser_topline(combo->browser) +
444 fl_get_browser_screenlines(combo->browser))
445 fl_set_browser_topline(combo->browser,
446 fl_get_browser(combo->browser)
447 - fl_get_browser_screenlines(combo->browser)+1);
448 if (fl_get_browser(combo->browser)<
449 fl_get_browser_topline(combo->browser))
450 fl_set_browser_topline(combo->browser,
451 fl_get_browser(combo->browser));
454 if (fl_get_browser(combo->browser) > 1)
455 fl_select_browser_line(combo->browser,
456 fl_get_browser(combo->browser)-1);
457 if (fl_get_browser(combo->browser)>=
458 fl_get_browser_topline(combo->browser) +
459 fl_get_browser_screenlines(combo->browser))
460 fl_set_browser_topline(combo->browser,
461 fl_get_browser(combo->browser)
462 - fl_get_browser_screenlines(combo->browser)+1);
463 if (fl_get_browser(combo->browser) <
464 fl_get_browser_topline(combo->browser))
465 fl_set_browser_topline(combo->browser,
466 fl_get_browser(combo->browser));
478 extern "C" int C_Combox_peek_event(FL_FORM * form, void *xev)
480 return Combox::peek_event(form, xev);
492 //Combox combo(FL_COMBOX_DROPLIST);
493 Combox combo(FL_COMBOX_INPUT);
497 FD_test *create_form_test(void)
500 FD_test *fdui = (FD_test *) fl_calloc(1, sizeof(*fdui));
502 fdui->test = fl_bgn_form(FL_NO_BOX, 320, 190);
503 obj = fl_add_box(FL_UP_BOX, 0, 0, 320, 190, "");
504 obj = fl_add_box(FL_DOWN_BOX, 10, 50, 300, 110, "");
505 obj = fl_add_button(FL_NORMAL_BUTTON, 250, 10, 50, 30, _("Done"));
506 combo.add(10, 15, 120, 25, 135);
514 fprintf(stderr, "selected %d:%s\n", i, combo.getline());
517 int main(int argc, char *argv[])
521 // Same defaults as in lyx
523 cntl.buttonFontSize = FL_NORMAL_SIZE;
524 cntl.browserFontSize = FL_NORMAL_SIZE;
525 cntl.labelFontSize = FL_NORMAL_SIZE;
526 cntl.choiceFontSize = FL_NORMAL_SIZE;
527 cntl.inputFontSize = FL_NORMAL_SIZE;
528 cntl.borderWidth = -2;
529 fl_set_defaults(FL_PDButtonFontSize, &cntl);
530 fl_set_defaults(FL_PDBrowserFontSize, &cntl);
531 fl_set_defaults(FL_PDLabelFontSize, &cntl);
532 fl_set_defaults(FL_PDChoiceFontSize, &cntl);
533 fl_set_defaults(FL_PDInputFontSize, &cntl);
534 fl_set_defaults(FL_PDBorderWidth, &cntl);
535 fl_initialize(&argc, argv, 0, 0, 0);
537 fd_test = create_form_test();
539 /* fill-in form initialization code */
540 combo.addline("Title");
541 combo.addline("Author");
542 combo.addline("Date");
543 combo.addline("Abstract");
544 combo.addline("Chapter");
545 combo.addline("Section");
546 combo.addline("Subsection");
547 combo.addline("List");
548 combo.addline("Description");
549 combo.addline("Verse");
550 combo.addline("Verbatim");
551 combo.setcallback(combo_cb);
554 /* show the first form */
555 fl_show_form(fd_test->test, FL_PLACE_CENTER, FL_FULLBORDER, "test");