3 * Combox: A combination of two objects (a button and a browser) is
4 * encapsulated to get a combobox-like object. All XForms
5 * functions are hidden.
7 * GNU Copyleft 1996 Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
10 * Dependencies: Only XForms, but created to be used with LyX.
16 * 2/06/1996, Alejandro Aguilar Sierra
19 * 4/06/1996, Alejandro Aguilar Sierra
20 * Added droplist mode (a button with a black down arrow at right)
21 * and support for middle and right buttons, as XForms choice object.
23 * 6/06/1996, Lars Gullik Bjønnes
24 * Added a combox with an input object. and a pre and a post handle.
26 * 22/07/96, Alejandro Aguilar Sierra
27 * Assigned to the browser its own popup window. No more need of
28 * external pre and post handlers to simulate the wanted behaviour.
35 #pragma implementation
45 // These are C wrappers around static members of Combox, used as
46 // callbacks for xforms.
47 extern "C" void C_Combox_input_cb(FL_OBJECT *ob, long);
48 extern "C" void C_Combox_combo_cb(FL_OBJECT *ob, long data) ;
49 extern "C" int C_Combox_peek_event(FL_FORM * form, void *xev);
51 Combox::Combox(combox_type t)
73 if (browser) fl_clear_browser(browser);
75 if (type == FL_COMBOX_INPUT)
76 fl_set_input(label, "");
78 fl_set_object_label(label, "");
85 lyxerr.debug() << "Button: " << button << endl;
87 fl_delete_object(button);
88 fl_free_object(button);
91 lyxerr.debug() << "Label: " << label << endl;
92 if (label && label!= button) {
93 fl_delete_object(label);
94 fl_free_object(label);
97 lyxerr.debug() << "Form: " << form << endl;
98 lyxerr.debug() << "Browser: " << browser << endl;
99 if (form && browser) {
100 fl_delete_object(browser);
101 fl_free_object(browser);
113 void Combox::addline(string const & text)
115 if (!browser) return;
116 fl_add_browser_line(browser, text.c_str());
118 // By default the first item is selected
121 if (type == FL_COMBOX_INPUT)
122 fl_set_input(label, text.c_str());
124 fl_set_object_label(label, text.c_str());
130 bool Combox::select_text(string const & t)
132 if (!browser || t.empty()) return false;
133 int const maxline = fl_get_browser_maxline(browser);
135 for (int i = 1; i <= maxline; ++i) {
136 if (t == fl_get_browser_line(browser, i)) {
141 return false; // t does not exist in browser
145 void Combox::select(int i)
147 if (!browser || !button) return;
148 if (i > 0 && i <= fl_get_browser_maxline(browser)) sel = i;
149 fl_deactivate_object(button);
151 if (type == FL_COMBOX_INPUT)
152 fl_set_input(label, fl_get_browser_line(browser, sel));
154 fl_set_object_label(label, fl_get_browser_line(browser, sel));
155 fl_activate_object(button);
159 void Combox::add(int x, int y, int w, int hmin, int hmax)
164 case FL_COMBOX_DROPLIST:
166 button = obj = fl_add_button(FL_NORMAL_BUTTON,
167 x+w-22, y, 22, hmin, "@2->");
168 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
169 fl_set_object_dblbuffer(obj, 1);
170 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
171 label = obj = fl_add_button(FL_NORMAL_TEXT, x, y, w-22, hmin, "");
172 fl_set_object_boxtype(obj, FL_DOWN_BOX);
173 fl_set_object_color(obj, FL_MCOL, FL_BLACK);
174 fl_set_object_lalign(obj, FL_ALIGN_CENTER|FL_ALIGN_INSIDE);
175 fl_set_object_dblbuffer(obj, 1);
176 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
179 case FL_COMBOX_NORMAL:
181 button = obj = fl_add_button(FL_NORMAL_BUTTON, x, y, w, hmin, "");
182 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
183 fl_set_object_boxtype(obj, FL_DOWN_BOX);
184 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
185 fl_set_object_color(obj, FL_MCOL, FL_BLACK);
189 case FL_COMBOX_INPUT:
191 button = obj = fl_add_button(FL_NORMAL_BUTTON,
192 x+w-22, y, 22, hmin, "@2->");
193 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
194 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
195 label = obj = fl_add_input(FL_NORMAL_INPUT, x, y, w-22, hmin, "");
196 fl_set_object_boxtype(obj, FL_DOWN_BOX);
197 fl_set_object_return(obj, FL_RETURN_END_CHANGED);
198 fl_set_object_callback(obj, C_Combox_input_cb, 0);
199 //fl_set_object_color(obj, FL_MCOL, FL_BLACK);
200 //fl_set_object_lalign(obj,FL_ALIGN_CENTER|FL_ALIGN_INSIDE);
205 label->u_vdata = this;
206 button->u_vdata = this;
208 // Hmm, it seems fl_create_browser is broken in xforms 0.86.
209 // We have to work around that by creating the dropped browser form
210 // at this point already. However, this means that we have
211 // to do a little hacking: (Asger)
212 FL_FORM * current_form = fl_current_form;
215 bw = w + 20; bh = hmax - hmin - 12;
217 form = fl_bgn_form(FL_NO_BOX, bw, bh);
218 browser = obj = fl_add_browser(FL_HOLD_BROWSER, 0, 0, bw, bh, "");
219 fl_set_object_boxtype(obj, FL_UP_BOX);
220 fl_set_object_color(obj, FL_MCOL, FL_YELLOW);
221 fl_set_object_gravity(obj, NorthWestGravity, NorthWestGravity);
222 fl_set_object_callback(obj, C_Combox_combo_cb, 2);
224 browser->u_vdata = this;
225 form->u_vdata = browser;
226 fl_register_raw_callback(form,
227 ButtonPressMask|KeyPressMask,
228 C_Combox_peek_event);
230 // And revert to adding to the old form (Asger)
231 fl_addto_form(current_form);
235 static Window save_window;
238 void Combox::Redraw()
240 if (browser) fl_redraw_object(browser);
241 if (button) fl_redraw_object(button);
242 if (label) fl_redraw_object(label);
250 XGetInputFocus(fl_get_display(), &save_window, &tmp); //BUG-Fix Dietmar
251 XFlush(fl_get_display());
252 if (button && type != FL_COMBOX_NORMAL) {
253 fl_set_object_label(button, "@2<-");
254 fl_redraw_object(button);
256 int x = label->form->x + label->x, y = label->form->y + label->y;
257 fl_set_form_position(form, x, y + label->h);
258 fl_show_form(form, FL_PLACE_POSITION, FL_NOBORDER, "");
260 fl_set_browser_topline(browser, sel);
261 fl_select_browser_line(browser, sel);
263 XGrabPointer(fl_get_display(), form->window, false,
264 ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
265 GrabModeAsync, GrabModeAsync,
267 XFlush(fl_get_display());
270 void Combox::Hide(int who)
272 if (!who && browser && label) {
273 sel = fl_get_browser(browser);
275 if (type == FL_COMBOX_INPUT)
276 fl_set_input(label, fl_get_browser_line(browser, sel));
278 fl_set_object_label(label,
279 fl_get_browser_line(browser, sel));
280 // if (callback) callback(sel, cb_arg);
282 XUngrabPointer(fl_get_display(), 0);
283 XFlush(fl_get_display());
284 if (!who && browser && label && callback)
285 callback(sel, cb_arg, this);
288 XSetInputFocus(fl_get_display(), save_window,
289 RevertToParent, CurrentTime); // BUG-FIX-Dietmar
290 XFlush(fl_get_display());
293 if (type != FL_COMBOX_NORMAL){
294 fl_set_object_label(button, "@2->");
295 fl_redraw_object(button);
302 void Combox::activate()
304 if (browser) fl_activate_object(browser);
305 if (button) fl_activate_object(button);
306 if (label) fl_activate_object(label);
310 void Combox::deactivate()
312 if (browser) fl_deactivate_object(browser);
313 if (button) fl_deactivate_object(button);
314 if (label) fl_deactivate_object(label);
318 void Combox::input_cb(FL_OBJECT * ob, long)
320 Combox * combo = static_cast<Combox*>(ob->u_vdata);
322 char const * text = fl_get_input(ob);
324 combo->addto(text ? text : string());
325 combo->is_empty = false;
329 extern "C" void C_Combox_input_cb(FL_OBJECT * ob, long data)
331 Combox::input_cb(ob, data);
335 void Combox::combo_cb(FL_OBJECT * ob, long data)
337 Combox * combo = static_cast<Combox*>(ob->u_vdata);
341 int const i = combo->get();
342 switch (fl_get_button_numb(ob)) {
345 combo->select(i - 1);
347 combo->callback(combo->sel,
348 combo->cb_arg, combo);
353 combo->select(i + 1);
355 combo->callback(combo->sel,
356 combo->cb_arg, combo);
359 default: combo->Show(); break;
369 extern "C" void C_Combox_combo_cb(FL_OBJECT * ob, long data)
371 Combox::combo_cb(ob, data);
375 int Combox::peek_event(FL_FORM * form, void * xev)
377 FL_OBJECT * ob = static_cast<FL_OBJECT *>(form->u_vdata);
378 Combox * combo = static_cast<Combox*>(ob->u_vdata);
380 // I don't know why belowmouse does not work, but it doesn't. (Asger)
381 // Are we sure? Please verify. (Lgb)
382 if (static_cast<XEvent *>(xev)->type == ButtonPress && (
383 static_cast<XEvent *>(xev)->xbutton.x - ob->x < 0 ||
384 static_cast<XEvent *>(xev)->xbutton.x - ob->x > ob->w ||
385 static_cast<XEvent *>(xev)->xbutton.y - ob->y < 0 ||
386 static_cast<XEvent *>(xev)->xbutton.y - ob->y > ob->h)) {
391 if (static_cast<XEvent*>(xev)->type != KeyPress) return 0;
393 char s_r[10]; s_r[9] = '\0';
394 KeySym keysym_return;
395 XLookupString(&static_cast<XEvent*>(xev)->xkey, s_r, 10,
397 XFlush(fl_get_display());
398 switch (keysym_return) {
400 if (fl_get_browser(combo->browser) <
401 fl_get_browser_maxline(combo->browser))
402 fl_select_browser_line(combo->browser,
403 fl_get_browser(combo->browser)+1);
404 if (fl_get_browser(combo->browser)>=
405 fl_get_browser_topline(combo->browser) +
406 fl_get_browser_screenlines(combo->browser))
407 fl_set_browser_topline(combo->browser,
408 fl_get_browser(combo->browser)
409 - fl_get_browser_screenlines(combo->browser)+1);
410 if (fl_get_browser(combo->browser)<
411 fl_get_browser_topline(combo->browser))
412 fl_set_browser_topline(combo->browser,
413 fl_get_browser(combo->browser));
416 if (fl_get_browser(combo->browser) > 1)
417 fl_select_browser_line(combo->browser,
418 fl_get_browser(combo->browser)-1);
419 if (fl_get_browser(combo->browser)>=
420 fl_get_browser_topline(combo->browser) +
421 fl_get_browser_screenlines(combo->browser))
422 fl_set_browser_topline(combo->browser,
423 fl_get_browser(combo->browser)
424 - fl_get_browser_screenlines(combo->browser)+1);
425 if (fl_get_browser(combo->browser) <
426 fl_get_browser_topline(combo->browser))
427 fl_set_browser_topline(combo->browser,
428 fl_get_browser(combo->browser));
440 extern "C" int C_Combox_peek_event(FL_FORM * form, void *xev)
442 return Combox::peek_event(form, xev);
454 //Combox combo(FL_COMBOX_DROPLIST);
455 Combox combo(FL_COMBOX_INPUT);
459 FD_test *create_form_test(void)
462 FD_test *fdui = (FD_test *) fl_calloc(1, sizeof(*fdui));
464 fdui->test = fl_bgn_form(FL_NO_BOX, 320, 190);
465 obj = fl_add_box(FL_UP_BOX, 0, 0, 320, 190, "");
466 obj = fl_add_box(FL_DOWN_BOX, 10, 50, 300, 110, "");
467 obj = fl_add_button(FL_NORMAL_BUTTON, 250, 10, 50, 30, _("Done"));
468 combo.add(10, 15, 120, 25, 135);
476 fprintf(stderr, "selected %d:%s\n", i, combo.getline());
479 int main(int argc, char *argv[])
483 // Same defaults as in lyx
485 cntl.buttonFontSize = FL_NORMAL_SIZE;
486 cntl.browserFontSize = FL_NORMAL_SIZE;
487 cntl.labelFontSize = FL_NORMAL_SIZE;
488 cntl.choiceFontSize = FL_NORMAL_SIZE;
489 cntl.inputFontSize = FL_NORMAL_SIZE;
490 cntl.borderWidth = -2;
491 fl_set_defaults(FL_PDButtonFontSize, &cntl);
492 fl_set_defaults(FL_PDBrowserFontSize, &cntl);
493 fl_set_defaults(FL_PDLabelFontSize, &cntl);
494 fl_set_defaults(FL_PDChoiceFontSize, &cntl);
495 fl_set_defaults(FL_PDInputFontSize, &cntl);
496 fl_set_defaults(FL_PDBorderWidth, &cntl);
497 fl_initialize(&argc, argv, 0, 0, 0);
499 fd_test = create_form_test();
501 /* fill-in form initialization code */
502 combo.addline("Title");
503 combo.addline("Author");
504 combo.addline("Date");
505 combo.addline("Abstract");
506 combo.addline("Chapter");
507 combo.addline("Section");
508 combo.addline("Subsection");
509 combo.addline("List");
510 combo.addline("Description");
511 combo.addline("Verse");
512 combo.addline("Verbatim");
513 combo.setcallback(combo_cb);
516 /* show the first form */
517 fl_show_form(fd_test->test, FL_PLACE_CENTER, FL_FULLBORDER, "test");