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): type(t)
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() << "Button: " << button << endl;
86 fl_delete_object(button);
87 fl_free_object(button);
90 lyxerr.debug() << "Label: " << label << endl;
91 if (label && label!= button) {
92 fl_delete_object(label);
93 fl_free_object(label);
96 lyxerr.debug() << "Form: " << form << endl;
97 lyxerr.debug() << "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)
163 case FL_COMBOX_DROPLIST:
165 button = obj = fl_add_button(FL_NORMAL_BUTTON,
166 x+w-22, y, 22, hmin, "@2->");
167 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
168 fl_set_object_dblbuffer(obj, 1);
169 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
170 label = obj = fl_add_button(FL_NORMAL_TEXT, x, y, w-22, hmin, "");
171 fl_set_object_boxtype(obj, FL_DOWN_BOX);
172 fl_set_object_color(obj, FL_MCOL, FL_BLACK);
173 fl_set_object_lalign(obj, FL_ALIGN_CENTER|FL_ALIGN_INSIDE);
174 fl_set_object_dblbuffer(obj, 1);
175 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
178 case FL_COMBOX_NORMAL:
180 button = obj = fl_add_button(FL_NORMAL_BUTTON, x, y, w, hmin, "");
181 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
182 fl_set_object_boxtype(obj, FL_DOWN_BOX);
183 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
184 fl_set_object_color(obj, FL_MCOL, FL_BLACK);
188 case FL_COMBOX_INPUT:
190 button = obj = fl_add_button(FL_NORMAL_BUTTON,
191 x+w-22, y, 22, hmin, "@2->");
192 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
193 fl_set_object_callback(obj, C_Combox_combo_cb, 0);
194 label = obj = fl_add_input(FL_NORMAL_INPUT, x, y, w-22, hmin, "");
195 fl_set_object_boxtype(obj, FL_DOWN_BOX);
196 fl_set_object_return(obj, FL_RETURN_END_CHANGED);
197 fl_set_object_callback(obj, C_Combox_input_cb, 0);
198 //fl_set_object_color(obj, FL_MCOL, FL_BLACK);
199 //fl_set_object_lalign(obj,FL_ALIGN_CENTER|FL_ALIGN_INSIDE);
204 label->u_vdata = this;
205 button->u_vdata = this;
207 // Hmm, it seems fl_create_browser is broken in xforms 0.86.
208 // We have to work around that by creating the dropped browser form
209 // at this point already. However, this means that we have
210 // to do a little hacking: (Asger)
211 FL_FORM * current_form = fl_current_form;
214 bw = w + 20; bh = hmax - hmin - 12;
216 form = fl_bgn_form(FL_NO_BOX, bw, bh);
217 browser = obj = fl_add_browser(FL_HOLD_BROWSER, 0, 0, bw, bh, "");
218 fl_set_object_boxtype(obj, FL_UP_BOX);
219 fl_set_object_color(obj, FL_MCOL, FL_YELLOW);
220 fl_set_object_gravity(obj, NorthWestGravity, NorthWestGravity);
221 fl_set_object_callback(obj, C_Combox_combo_cb, 2);
223 browser->u_vdata = this;
224 form->u_vdata = browser;
225 fl_register_raw_callback(form,
226 ButtonPressMask|KeyPressMask,
227 C_Combox_peek_event);
229 // And revert to adding to the old form (Asger)
230 fl_addto_form(current_form);
234 static Window save_window;
237 void Combox::Redraw()
239 if (browser) fl_redraw_object(browser);
240 if (button) fl_redraw_object(button);
241 if (label) fl_redraw_object(label);
249 XGetInputFocus(fl_display, &save_window, &tmp); //BUG-Fix Dietmar
251 if (button && type != FL_COMBOX_NORMAL) {
252 fl_set_object_label(button, "@2<-");
253 fl_redraw_object(button);
255 int x = label->form->x + label->x, y = label->form->y + label->y;
256 fl_set_form_position(form, x, y + label->h);
257 fl_show_form(form, FL_PLACE_POSITION, FL_NOBORDER, "");
259 fl_set_browser_topline(browser, sel);
260 fl_select_browser_line(browser, sel);
262 XGrabPointer(fl_display, form->window, false,
263 ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
264 GrabModeAsync, GrabModeAsync,
269 void Combox::Hide(int who)
271 if (!who && browser && label) {
272 sel = fl_get_browser(browser);
274 if (type == FL_COMBOX_INPUT)
275 fl_set_input(label, fl_get_browser_line(browser, sel));
277 fl_set_object_label(label,
278 fl_get_browser_line(browser, sel));
279 // if (callback) callback(sel, cb_arg);
281 XUngrabPointer(fl_display, 0);
283 if (!who && browser && label && callback)
284 callback(sel, cb_arg, this);
287 XSetInputFocus(fl_display, save_window,
288 RevertToParent, CurrentTime); // BUG-FIX-Dietmar
292 if (type != FL_COMBOX_NORMAL){
293 fl_set_object_label(button, "@2->");
294 fl_redraw_object(button);
301 void Combox::activate()
303 if (browser) fl_activate_object(browser);
304 if (button) fl_activate_object(button);
305 if (label) fl_activate_object(label);
309 void Combox::deactivate()
311 if (browser) fl_deactivate_object(browser);
312 if (button) fl_deactivate_object(button);
313 if (label) fl_deactivate_object(label);
316 void Combox::input_cb(FL_OBJECT * ob, long)
318 Combox * combo = static_cast<Combox*>(ob->u_vdata);
320 char const * text = fl_get_input(ob);
323 combo->is_empty = false;
326 extern "C" void C_Combox_input_cb(FL_OBJECT * ob, long data)
328 Combox::input_cb(ob, data);
332 void Combox::combo_cb(FL_OBJECT * ob, long data)
334 Combox * combo = static_cast<Combox*>(ob->u_vdata);
338 int i = combo->get();
339 switch (fl_get_button_numb(ob)) {
344 combo->callback(combo->sel,
345 combo->cb_arg, combo);
352 combo->callback(combo->sel,
353 combo->cb_arg, combo);
356 default: combo->Show(); break;
366 extern "C" void C_Combox_combo_cb(FL_OBJECT * ob, long data)
368 Combox::combo_cb(ob, data);
372 int Combox::peek_event(FL_FORM * form, void * xev)
374 FL_OBJECT * ob = static_cast<FL_OBJECT *>(form->u_vdata);
375 Combox * combo = static_cast<Combox*>(ob->u_vdata);
377 // I don't know why belowmouse does not work, but it doesn't. (Asger)
378 // Are we sure? Please verify. (Lgb)
379 if (static_cast<XEvent *>(xev)->type == ButtonPress && (
380 static_cast<XEvent *>(xev)->xbutton.x - ob->x < 0 ||
381 static_cast<XEvent *>(xev)->xbutton.x - ob->x > ob->w ||
382 static_cast<XEvent *>(xev)->xbutton.y - ob->y < 0 ||
383 static_cast<XEvent *>(xev)->xbutton.y - ob->y > ob->h)) {
388 if (static_cast<XEvent*>(xev)->type != KeyPress) return 0;
390 char s_r[10]; s_r[9] = '\0';
391 static int num_bytes;
392 KeySym keysym_return;
393 num_bytes = XLookupString(&static_cast<XEvent*>(xev)->xkey, s_r, 10,
396 switch (keysym_return) {
398 if (fl_get_browser(combo->browser) <
399 fl_get_browser_maxline(combo->browser))
400 fl_select_browser_line(combo->browser,
401 fl_get_browser(combo->browser)+1);
402 if (fl_get_browser(combo->browser)>=
403 fl_get_browser_topline(combo->browser) +
404 fl_get_browser_screenlines(combo->browser))
405 fl_set_browser_topline(combo->browser,
406 fl_get_browser(combo->browser)
407 - fl_get_browser_screenlines(combo->browser)+1);
408 if (fl_get_browser(combo->browser)<
409 fl_get_browser_topline(combo->browser))
410 fl_set_browser_topline(combo->browser,
411 fl_get_browser(combo->browser));
414 if (fl_get_browser(combo->browser) > 1)
415 fl_select_browser_line(combo->browser,
416 fl_get_browser(combo->browser)-1);
417 if (fl_get_browser(combo->browser)>=
418 fl_get_browser_topline(combo->browser) +
419 fl_get_browser_screenlines(combo->browser))
420 fl_set_browser_topline(combo->browser,
421 fl_get_browser(combo->browser)
422 - fl_get_browser_screenlines(combo->browser)+1);
423 if (fl_get_browser(combo->browser) <
424 fl_get_browser_topline(combo->browser))
425 fl_set_browser_topline(combo->browser,
426 fl_get_browser(combo->browser));
438 extern "C" int C_Combox_peek_event(FL_FORM * form, void *xev)
440 return Combox::peek_event(form, xev);
452 //Combox combo(FL_COMBOX_DROPLIST);
453 Combox combo(FL_COMBOX_INPUT);
457 FD_test *create_form_test(void)
460 FD_test *fdui = (FD_test *) fl_calloc(1, sizeof(*fdui));
462 fdui->test = fl_bgn_form(FL_NO_BOX, 320, 190);
463 obj = fl_add_box(FL_UP_BOX, 0, 0, 320, 190, "");
464 obj = fl_add_box(FL_DOWN_BOX, 10, 50, 300, 110, "");
465 obj = fl_add_button(FL_NORMAL_BUTTON, 250, 10, 50, 30, _("Done"));
466 combo.add(10, 15, 120, 25, 135);
474 fprintf(stderr, "selected %d:%s\n", i, combo.getline());
477 int main(int argc, char *argv[])
481 // Same defaults as in lyx
483 cntl.buttonFontSize = FL_NORMAL_SIZE;
484 cntl.browserFontSize = FL_NORMAL_SIZE;
485 cntl.labelFontSize = FL_NORMAL_SIZE;
486 cntl.choiceFontSize = FL_NORMAL_SIZE;
487 cntl.inputFontSize = FL_NORMAL_SIZE;
488 cntl.borderWidth = -2;
489 fl_set_defaults(FL_PDButtonFontSize, &cntl);
490 fl_set_defaults(FL_PDBrowserFontSize, &cntl);
491 fl_set_defaults(FL_PDLabelFontSize, &cntl);
492 fl_set_defaults(FL_PDChoiceFontSize, &cntl);
493 fl_set_defaults(FL_PDInputFontSize, &cntl);
494 fl_set_defaults(FL_PDBorderWidth, &cntl);
495 fl_initialize(&argc, argv, 0, 0, 0);
497 fd_test = create_form_test();
499 /* fill-in form initialization code */
500 combo.addline("Title");
501 combo.addline("Author");
502 combo.addline("Date");
503 combo.addline("Abstract");
504 combo.addline("Chapter");
505 combo.addline("Section");
506 combo.addline("Subsection");
507 combo.addline("List");
508 combo.addline("Description");
509 combo.addline("Verse");
510 combo.addline("Verbatim");
511 combo.setcallback(combo_cb);
514 /* show the first form */
515 fl_show_form(fd_test->test, FL_PLACE_CENTER, FL_FULLBORDER, "test");