src/frontends/xforms/Menubar_pimpl.C

   1 /* This file is part of
   2 * ======================================================
   3 *
   4 *           LyX, The Document Processor
   5 *
   6 *           Copyright 1999-2001 The LyX Team.
   7 *
   8 * ======================================================*/
   9
  10 #include <config.h>
  11
  12 #include <algorithm>
  13
  14 #ifdef __GNUG__
  15 #pragma implementation
  16 #endif
  17
  18 #include "Menubar_pimpl.h"
  19 #include "MenuBackend.h"
  20 #include "LyXAction.h"
  21 #include "kbmap.h"
  22 #include "buffer.h"
  23 #include "Dialogs.h"
  24 #include "XFormsView.h"
  25 #include "lyxfunc.h"
  26 #include "FloatList.h"
  27 #include "support/lstrings.h"
  28 #include "support/LAssert.h"
  29 #include "gettext.h"
  30 #include "debug.h"
  31
  32 using std::endl;
  33 using std::vector;
  34 using std::max;
  35 using std::min;
  36 using std::for_each;
  37
  38 typedef vector<int>::size_type size_type;
  39
  40 extern boost::scoped_ptr<kb_keymap> toplevel_keymap;
  41 extern LyXAction lyxaction;
  42
  43 namespace {
  44
  45 // Some constants
  46 int const MENU_LABEL_SIZE = FL_NORMAL_SIZE;
  47 int const MENU_LABEL_STYLE = FL_NORMAL_STYLE;
  48 int const mheight = 30;
  49 int const mbheight= 22;
  50 // where to place the menubar?
  51 int const yloc = (mheight - mbheight)/2; //air + bw;
  52 int const mbadd = 20; // menu button add (to width)
  53 // Some space between buttons on the menubar
  54 int const air = 2;
  55 char const * menu_tabstop = "aa";
  56 char const * default_tabstop = "aaaaaaaa";
  57 // We do not want to mix position values in a menu (like the index of
  58 // a submenu) with the action numbers which convey actual information.
  59 // Therefore we offset all the action values by an arbitrary large
  60 // constant.
  61 int const action_offset = 1000;
  62
  63 // This is used a few times below.
  64 inline
  65 int string_width(string const & str)
  66 {
  67         return fl_get_string_widthTAB(MENU_LABEL_STYLE, MENU_LABEL_SIZE,
  68                                       str.c_str(),
  69                                       static_cast<int>(str.length()));
  70 }
  71
  72 } // namespace anon
  73
  74
  75 extern "C" {
  76
  77         //Defined later, used in makeMenubar().
  78         static
  79         void C_Menubar_Pimpl_MenuCallback(FL_OBJECT * ob, long button)
  80         {
  81                 Menubar::Pimpl::MenuCallback(ob, button);
  82         }
  83
  84 }
  85
  86
  87 Menubar::Pimpl::Pimpl(LyXView * view, MenuBackend const & mb)
  88         : owner_(view), menubackend_(&mb), current_group_(0)
  89 {
  90         for (MenuBackend::const_iterator menu = menubackend_->begin();
  91             menu != menubackend_->end() ; ++menu) {
  92                 if (menu->menubar()) {
  93                         FL_OBJECT * group = fl_bgn_group();
  94                         makeMenubar(*menu);
  95                         fl_end_group();
  96                         fl_hide_object(group);
  97                         lyxerr[Debug::GUI]
  98                                 << "Menubar::Pimpl::Pimpl: "
  99                                 << "creating and hiding group " << group
 100                                 << " for menubar " << menu->name() << endl;
 101                         menubarmap_[menu->name()] = group;
 102                 }
 103         }
 104 }
 105
 106
 107 void Menubar::Pimpl::makeMenubar(Menu const & menu)
 108 {
 109         FL_FORM * form = static_cast<XFormsView *>(owner_)->getForm();
 110         int moffset = 0;
 111
 112         // Create menu frame if there is non yet.
 113         FL_OBJECT * frame = fl_add_frame(FL_UP_FRAME, 0, 0,
 114                                          form->w, mheight, "");
 115         fl_set_object_resize(frame, FL_RESIZE_ALL);
 116         fl_set_object_gravity(frame, NorthWestGravity,
 117                               NorthEastGravity);
 118
 119         Menu::const_iterator i = menu.begin();
 120         Menu::const_iterator end = menu.end();
 121         for (; i != end; ++i) {
 122                 FL_OBJECT * obj;
 123                 if (i->kind() != MenuItem::Submenu) {
 124                         lyxerr << "ERROR: Menubar::Pimpl::createMenubar:"
 125                                 " only submenus can appear in a menubar"
 126                                << endl;
 127                         continue;
 128                 }
 129                 string const label = i->label();
 130                 string const shortcut = "#" + i->shortcut();
 131                 int const width = string_width(label);
 132                 obj = fl_add_button(FL_MENU_BUTTON,
 133                                     air + moffset, yloc,
 134                                     width + mbadd,
 135                                     mbheight,
 136                                     label.c_str());
 137                 fl_set_object_boxtype(obj, FL_FLAT_BOX);
 138                 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 139                 fl_set_object_lsize(obj, MENU_LABEL_SIZE);
 140                 fl_set_object_lstyle(obj, MENU_LABEL_STYLE);
 141                 fl_set_object_resize(obj, FL_RESIZE_ALL);
 142                 fl_set_object_gravity(obj, NorthWestGravity,
 143                                       NorthWestGravity);
 144                 moffset += obj->w + air;
 145                 fl_set_object_shortcut(obj, shortcut.c_str(), 1);
 146                 fl_set_object_callback(obj, C_Menubar_Pimpl_MenuCallback, 1);
 147
 148                 boost::shared_ptr<ItemInfo>
 149                         iteminfo(new ItemInfo(this, new MenuItem(*i), obj));
 150                 buttonlist_.push_back(iteminfo);
 151                 obj->u_vdata = iteminfo.get();
 152         }
 153
 154 }
 155
 156
 157 void Menubar::Pimpl::set(string const & menu_name)
 158 {
 159         lyxerr[Debug::GUI] << "Entering Menubar::Pimpl::set "
 160                            << "for menu `" << menu_name << "'" << endl;
 161
 162         if (menu_name != current_menu_name_) {
 163                 MenubarMap::iterator mbit = menubarmap_.find(menu_name);
 164
 165                 if (mbit == menubarmap_.end()) {
 166                         lyxerr << "ERROR:set: Unknown menu `" << menu_name
 167                                << "'" << endl;
 168                         return;
 169                 }
 170
 171                 if (current_group_) {
 172                         lyxerr[Debug::GUI] << "  hiding group "
 173                                            << current_group_ << endl;
 174                         fl_hide_object(current_group_);
 175                 }
 176
 177                 lyxerr[Debug::GUI] << "  showing group "
 178                                    << mbit->second << endl;
 179                 fl_show_object(mbit->second);
 180                 current_menu_name_ = menu_name;
 181                 current_group_ = mbit->second;
 182                 lyxerr[Debug::GUI] << "Menubar::Pimpl::set: Menubar set."
 183                                    << endl;
 184         } else
 185                 lyxerr [Debug::GUI] << "Menubar::Pimpl::set: Nothing to do."
 186                                     << endl;
 187 }
 188
 189
 190 void Menubar::Pimpl::openByName(string const & name)
 191 {
 192         if (menubackend_->getMenu(current_menu_name_).hasSubmenu(name)) {
 193                 for (ButtonList::const_iterator cit = buttonlist_.begin();
 194                      cit != buttonlist_.end(); ++cit) {
 195                         if ((*cit)->item_->submenu() == name) {
 196                                 MenuCallback((*cit)->obj_, 1);
 197                                 return;
 198                         }
 199                 }
 200         }
 201         lyxerr << "Menubar::Pimpl::openByName: menu "
 202                << name << " not found" << endl;
 203 }
 204
 205
 206 namespace {
 207
 208 inline
 209 string const limit_string_length(string const & str)
 210 {
 211         string::size_type const max_item_length = 45;
 212
 213         if (str.size() > max_item_length)
 214                 return str.substr(0, max_item_length - 3) + "...";
 215         else
 216                 return str;
 217 }
 218
 219
 220 int get_new_submenu(vector<int> & smn, Window win)
 221 {
 222         static size_type max_number_of_menus = 32;
 223         if (smn.size() >= max_number_of_menus)
 224                 max_number_of_menus =
 225                     fl_setpup_maxpup(static_cast<int>(2*smn.size()));
 226         int menu = fl_newpup(win);
 227         smn.push_back(menu);
 228         return menu;
 229 }
 230
 231
 232 size_type const max_number_of_items = 25;
 233
 234 inline
 235 string const fixlabel(string const & str)
 236 {
 237 #if FL_REVISION < 89
 238         return subst(str, '%', '?');
 239 #else
 240         return subst(str, "%", "%%");
 241 #endif
 242 }
 243
 244
 245
 246 void add_toc2(int menu, string const & extra_label,
 247               vector<int> & smn, Window win,
 248               vector<Buffer::TocItem> const & toc_list,
 249               size_type from, size_type to, int depth)
 250 {
 251         int shortcut_count = 0;
 252         if (to - from <= max_number_of_items) {
 253                 for (size_type i = from; i < to; ++i) {
 254                         int const action = lyxaction.
 255                                 getPseudoAction(LFUN_GOTO_PARAGRAPH,
 256                                                 tostr(toc_list[i].par->id()));
 257                         string label(4 * max(0, toc_list[i].depth - depth),' ');
 258                         label += fixlabel(toc_list[i].str);
 259                         label = limit_string_length(label);
 260                         label += "%x" + tostr(action + action_offset);
 261                         if (i == to - 1 && depth == 0)
 262                                 label += extra_label;
 263                         if (toc_list[i].depth == depth
 264                             && ++shortcut_count <= 9) {
 265                                 label += "%h";
 266                                 fl_addtopup(menu, label.c_str(),
 267                                             tostr(shortcut_count).c_str());
 268                         } else
 269                                 fl_addtopup(menu, label.c_str());
 270                 }
 271         } else {
 272                 size_type pos = from;
 273                 size_type count = 0;
 274                 while (pos < to) {
 275                         ++count;
 276                         if (count > max_number_of_items) {
 277                                 int menu2 = get_new_submenu(smn, win);
 278                                 add_toc2(menu2, extra_label, smn, win,
 279                                          toc_list, pos, to, depth);
 280                                 string label = _("More");
 281                                 label += "...%m";
 282                                 if (depth == 0)
 283                                         label += extra_label;
 284                                 fl_addtopup(menu, label.c_str(), menu2);
 285                                 break;
 286                         }
 287                         size_type new_pos = pos+1;
 288                         while (new_pos < to &&
 289                                toc_list[new_pos].depth > depth)
 290                                 ++new_pos;
 291
 292                         int const action = lyxaction.
 293                                 getPseudoAction(LFUN_GOTO_PARAGRAPH,
 294                                                 tostr(toc_list[pos].par->id()));
 295                         string label(4 * max(0, toc_list[pos].depth - depth), ' ');
 296                         label += fixlabel(toc_list[pos].str);
 297                         label = limit_string_length(label);
 298                         if (new_pos == to && depth == 0)
 299                                 label += extra_label;
 300                         string shortcut;
 301                         if (toc_list[pos].depth == depth &&
 302                             ++shortcut_count <= 9)
 303                                 shortcut = tostr(shortcut_count);
 304
 305                         if (new_pos == pos + 1) {
 306                                 label += "%x" + tostr(action + action_offset);
 307                                 if (!shortcut.empty()) {
 308                                         label += "%h";
 309                                         fl_addtopup(menu, label.c_str(),
 310                                                     shortcut.c_str());
 311                                 } else
 312                                         fl_addtopup(menu, label.c_str());
 313                         } else {
 314                                 int menu2 = get_new_submenu(smn, win);
 315                                 add_toc2(menu2, extra_label, smn, win,
 316                                          toc_list, pos, new_pos, depth+1);
 317                                 label += "%m";
 318                                 if (!shortcut.empty()) {
 319                                         label += "%h";
 320                                         fl_addtopup(menu, label.c_str(), menu2,
 321                                                     shortcut.c_str());
 322                                 } else
 323                                         fl_addtopup(menu, label.c_str(), menu2);
 324                         }
 325                         pos = new_pos;
 326                 }
 327         }
 328 }
 329
 330 } // namespace anon
 331
 332 void Menubar::Pimpl::add_toc(int menu, string const & extra_label,
 333                              vector<int> & smn, Window win)
 334 {
 335         Buffer::Lists toc_list = owner_->buffer()->getLists();
 336         Buffer::Lists::const_iterator cit = toc_list.begin();
 337         Buffer::Lists::const_iterator end = toc_list.end();
 338         for (; cit != end; ++cit) {
 339                 // Handle this elsewhere
 340                 if (cit->first == "TOC") continue;
 341
 342                 // All the rest is for floats
 343                 int menu_first_sub = get_new_submenu(smn, win);
 344                 int menu_current = menu_first_sub;
 345                 Buffer::SingleList::const_iterator ccit = cit->second.begin();
 346                 Buffer::SingleList::const_iterator eend = cit->second.end();
 347                 size_type count = 0;
 348                 for (; ccit != eend; ++ccit) {
 349                         ++count;
 350                         if (count > max_number_of_items) {
 351                                 int menu_tmp = get_new_submenu(smn, win);
 352                                 string label = _("More");
 353                                 label += "...%m";
 354                                 fl_addtopup(menu_current, label.c_str(), menu_tmp);
 355                                 count = 1;
 356                                 menu_current = menu_tmp;
 357                         }
 358                         int const action =
 359                                 lyxaction
 360                                 .getPseudoAction(LFUN_GOTO_PARAGRAPH,
 361                                                  tostr(ccit->par->id()));
 362                         string label = fixlabel(ccit->str);
 363                         label = limit_string_length(label);
 364                         label += "%x" + tostr(action + action_offset);
 365                         fl_addtopup(menu_current, label.c_str());
 366                 }
 367                 string const m = floatList[cit->first]->second.name() + "%m";
 368                 fl_addtopup(menu, m.c_str(), menu_first_sub);
 369         }
 370
 371
 372         // Handle normal TOC
 373         cit = toc_list.find("TOC");
 374         if (cit == end) {
 375                 string const tmp = _("No Table of contents%i") + extra_label;
 376                 fl_addtopup(menu, tmp.c_str());
 377                 return;
 378         } else {
 379                 add_toc2(menu, extra_label, smn, win,
 380                          cit->second, 0, cit->second.size(), 0);
 381         }
 382 }
 383
 384
 385 int Menubar::Pimpl::create_submenu(Window win, LyXView * view,
 386                                    string const & menu_name,
 387                                    vector<int> & smn)
 388 {
 389         if (!menubackend_->hasMenu(menu_name)) {
 390                 lyxerr << "ERROR:create_submenu: Unknown menu `"
 391                        << menu_name << "'" << endl;
 392                 return -1;
 393         }
 394         Menu md;
 395         menubackend_->getMenu(menu_name).expand(md, owner_->buffer());
 396
 397         int const menu = get_new_submenu(smn, win);
 398         fl_setpup_softedge(menu, true);
 399         fl_setpup_bw(menu, -1);
 400         lyxerr[Debug::GUI] << "Adding menu " << menu
 401                            << " in deletion list" << endl;
 402
 403         // Compute the size of the largest label (because xforms is
 404         // not able to support shortcuts correctly...)
 405         int max_width = 0;
 406         string widest_label;
 407         Menu::const_iterator end = md.end();
 408         for (Menu::const_iterator i = md.begin(); i != end; ++i) {
 409                 MenuItem const & item = (*i);
 410                 if (item.kind() == MenuItem::Command) {
 411                         string const label = item.label() + '\t';
 412                         int const width = string_width(label);
 413                         if (width > max_width) {
 414                                 max_width = width;
 415                                 widest_label = label;
 416                         }
 417                 }
 418         }
 419         lyxerr[Debug::GUI] << "max_width=" << max_width
 420                            << ", widest_label=`" << widest_label
 421                            << "'" << endl;
 422
 423         // Compute where to put separators
 424         vector<string> extra_labels(md.size());
 425         vector<string>::iterator it = extra_labels.begin();
 426         vector<string>::iterator last = it;
 427         for (Menu::const_iterator i = md.begin(); i != end; ++i, ++it)
 428                 if (i->kind() == MenuItem::Separator)
 429                         *last = "%l";
 430                 else if (!i->optional() ||
 431                          !(view->getLyXFunc()->getStatus(i->action()).disabled()))
 432                         last = it;
 433
 434         it = extra_labels.begin();
 435         for (Menu::const_iterator i = md.begin(); i != end; ++i, ++it) {
 436                 MenuItem const & item = (*i);
 437                 string & extra_label = *it;
 438
 439                 switch (item.kind()) {
 440                 case MenuItem::Command: {
 441                         FuncStatus const flag =
 442                                 view->getLyXFunc()->getStatus(item.action());
 443                         // handle optional entries.
 444                         if (item.optional()
 445                             && (flag.disabled())) {
 446                                 lyxerr[Debug::GUI]
 447                                         << "Skipping optional item "
 448                                         << item.label() << endl;
 449                                 break;
 450                         }
 451
 452                         // Get the keys bound to this action, but keep only the
 453                         // first one later
 454                         string const accel = toplevel_keymap->findbinding(kb_action(item.action()));
 455                         // Build the menu label from all the info
 456                         string label = item.label();
 457
 458                         if (!accel.empty()) {
 459                                 // Try to be clever and add  just enough
 460                                 // tabs to align shortcuts.
 461                                 do
 462                                         label += '\t';
 463                                 while (string_width(label) < max_width + 5);
 464                                 label += accel.substr(1,accel.find(']') - 1);
 465                         }
 466                         label += "%x" + tostr(item.action() + action_offset)
 467                                 + extra_label;
 468
 469                         // Modify the entry using the function status
 470                         string pupmode;
 471                         if (flag.onoff(true))
 472                                 pupmode += "%B";
 473                         if (flag.onoff(false))
 474                                 pupmode += "%b";
 475                         if (flag.disabled() || flag.unknown())
 476                                 pupmode += "%i";
 477                         label += pupmode;
 478
 479                         // Finally the menu shortcut
 480                         string shortcut = item.shortcut();
 481
 482                         if (!shortcut.empty()) {
 483                                 shortcut += lowercase(shortcut[0]);
 484                                 label += "%h";
 485                                 fl_addtopup(menu, label.c_str(),
 486                                             shortcut.c_str());
 487                         } else
 488                                 fl_addtopup(menu, label.c_str());
 489
 490                         lyxerr[Debug::GUI] << "Command: \""
 491                                            << lyxaction.getActionName(item.action())
 492                                            << "\", binding \"" << accel
 493                                            << "\", shortcut \"" << shortcut
 494                                            << "\"" << endl;
 495                         break;
 496                 }
 497
 498                 case MenuItem::Submenu: {
 499                         int submenu = create_submenu(win, view,
 500                                                      item.submenu(), smn);
 501                         if (submenu == -1)
 502                                 return -1;
 503                         string label = item.label();
 504                         label += extra_label + "%m";
 505                         string shortcut = item.shortcut();
 506                         if (!shortcut.empty()) {
 507                                 shortcut += lowercase(shortcut[0]);
 508                                 label += "%h";
 509                                 fl_addtopup(menu, label.c_str(),
 510                                             submenu, shortcut.c_str());
 511                         } else {
 512                                 fl_addtopup(menu, label.c_str(), submenu);
 513                         }
 514                         break;
 515                 }
 516
 517                 case MenuItem::Separator:
 518                         // already done, and if it was the first one,
 519                         // we just ignore it.
 520                         break;
 521
 522                 case MenuItem::Toc:
 523                         add_toc(menu, extra_label, smn, win);
 524                         break;
 525
 526                 case MenuItem::Documents:
 527                 case MenuItem::Lastfiles:
 528                 case MenuItem::ViewFormats:
 529                 case MenuItem::UpdateFormats:
 530                 case MenuItem::ExportFormats:
 531                 case MenuItem::ImportFormats:
 532                 case MenuItem::FloatListInsert:
 533                 case MenuItem::FloatInsert:
 534                         lyxerr << "Menubar::Pimpl::create_submenu: "
 535                                 "this should not happen" << endl;
 536                         break;
 537
 538                 }
 539         }
 540         return menu;
 541 }
 542
 543
 544 void Menubar::Pimpl::MenuCallback(FL_OBJECT * ob, long button)
 545 {
 546         ItemInfo * iteminfo = static_cast<ItemInfo *>(ob->u_vdata);
 547 //      lyxerr << "MenuCallback: ItemInfo address=" << iteminfo
 548 //             << "Val=(pimpl_=" << iteminfo->pimpl_
 549 //             << ", item_=" << iteminfo->item_
 550 //             << ", obj_=" << iteminfo->obj_ << ")" <<endl;
 551
 552         LyXView * view = iteminfo->pimpl_->owner_;
 553         MenuItem const * item = iteminfo->item_.get();
 554
 555         if (button == 1) {
 556                 // set the pseudo menu-button
 557                 fl_set_object_boxtype(ob, FL_DOWN_BOX);
 558                 fl_set_button(ob, 0);
 559                 fl_redraw_object(ob);
 560         }
 561
 562         // Paranoia check
 563         lyx::Assert(item->kind() == MenuItem::Submenu);
 564
 565         // set tabstop length
 566         fl_set_tabstop(menu_tabstop);
 567         vector<int> submenus;
 568         int menu = iteminfo->pimpl_->
 569                 create_submenu(FL_ObjWin(ob), view,
 570                                item->submenu(), submenus);
 571         if (menu != -1) {
 572                 // place popup
 573                 fl_setpup_position(static_cast<XFormsView *>(view)->getForm()->x + ob->x,
 574                                    static_cast<XFormsView *>(view)->getForm()->y + ob->y + ob->h + 10);
 575                 int choice = fl_dopup(menu);
 576
 577                 if (button == 1) {
 578                                 // set the pseudo menu-button back
 579                         fl_set_object_boxtype(ob, FL_FLAT_BOX);
 580                         fl_redraw_object(ob);
 581                 }
 582
 583                 // If the action value is too low, then it is not a
 584                 // valid action, but something else.
 585                 if (choice >= action_offset + 1) {
 586                         view->getLyXFunc()->verboseDispatch(choice - action_offset, true);
 587                 } else {
 588                         lyxerr[Debug::GUI]
 589                                 << "MenuCallback: ignoring bogus action "
 590                                 << choice << endl;
 591                 }
 592         } else {
 593                 lyxerr << "Error in MenuCallback" << endl;
 594         }
 595
 596         for_each(submenus.begin(), submenus.end(), fl_freepup);
 597         // restore tabstop length
 598         fl_set_tabstop(default_tabstop);
 599
 600 }