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
  37 typedef vector<int>::size_type size_type;
  38
  39 extern boost::scoped_ptr<kb_keymap> toplevel_keymap;
  40 extern LyXAction lyxaction;
  41
  42 namespace {
  43
  44 // Some constants
  45 int const MENU_LABEL_SIZE = FL_NORMAL_SIZE;
  46 int const mheight = 30;
  47 int const mbheight= 22;
  48 // where to place the menubar?
  49 int const yloc = (mheight - mbheight)/2; //air + bw;
  50 int const mbadd = 20; // menu button add (to width)
  51 // Some space between buttons on the menubar
  52 int const air = 2;
  53 char const * menu_tabstop = "aa";
  54 char const * default_tabstop = "aaaaaaaa";
  55 // We do not want to mix position values in a menu (like the index of
  56 // a submenu) with the action numbers which convey actual information.
  57 // Therefore we offset all the action values by an arbitrary large
  58 // constant.
  59 int const action_offset = 1000;
  60
  61 // This is used a few times below.
  62 inline
  63 int string_width(string const & str)
  64 {
  65         return fl_get_string_widthTAB(FL_NORMAL_STYLE, MENU_LABEL_SIZE,
  66                                       str.c_str(),
  67                                       static_cast<int>(str.length()));
  68 }
  69
  70 } // namespace anon
  71
  72
  73 extern "C" {
  74
  75         //Defined later, used in makeMenubar().
  76         static
  77         void C_Menubar_Pimpl_MenuCallback(FL_OBJECT * ob, long button)
  78         {
  79                 Menubar::Pimpl::MenuCallback(ob, button);
  80         }
  81
  82 }
  83
  84
  85 Menubar::Pimpl::Pimpl(LyXView * view, MenuBackend const & mb)
  86         : owner_(view), menubackend_(&mb), current_group_(0)
  87 {
  88         for (MenuBackend::const_iterator menu = menubackend_->begin();
  89             menu != menubackend_->end() ; ++menu) {
  90                 if (menu->menubar()) {
  91                         FL_OBJECT * group = fl_bgn_group();
  92                         makeMenubar(*menu);
  93                         fl_end_group();
  94                         fl_hide_object(group);
  95                         lyxerr[Debug::GUI]
  96                                 << "Menubar::Pimpl::Pimpl: "
  97                                 << "creating and hiding group " << group
  98                                 << " for menubar " << menu->name() << endl;
  99                         menubarmap_[menu->name()] = group;
 100                 }
 101         }
 102 }
 103
 104
 105 void Menubar::Pimpl::makeMenubar(Menu const & menu)
 106 {
 107         FL_FORM * form = static_cast<XFormsView *>(owner_)->getForm();
 108         int moffset = 0;
 109
 110         // Create menu frame if there is non yet.
 111         FL_OBJECT * frame = fl_add_frame(FL_UP_FRAME, 0, 0,
 112                                          form->w, mheight, "");
 113         fl_set_object_resize(frame, FL_RESIZE_ALL);
 114         fl_set_object_gravity(frame, NorthWestGravity,
 115                               NorthEastGravity);
 116
 117         Menu::const_iterator i = menu.begin();
 118         Menu::const_iterator end = menu.end();
 119         for (; i != end; ++i) {
 120                 FL_OBJECT * obj;
 121                 if (i->kind() != MenuItem::Submenu) {
 122                         lyxerr << "ERROR: Menubar::Pimpl::createMenubar:"
 123                                 " only submenus can appear in a menubar";
 124                         break;
 125                 }
 126                 string const label = i->label();
 127                 string const shortcut = "#" + i->shortcut();
 128                 int const width = string_width(label);
 129                 obj = fl_add_button(FL_MENU_BUTTON,
 130                                     air + moffset, yloc,
 131                                     width + mbadd,
 132                                     mbheight,
 133                                     label.c_str());
 134                 fl_set_object_boxtype(obj, FL_FLAT_BOX);
 135                 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 136                 fl_set_object_lsize(obj, MENU_LABEL_SIZE);
 137                 fl_set_object_lstyle(obj, FL_NORMAL_STYLE);
 138                 fl_set_object_resize(obj, FL_RESIZE_ALL);
 139                 fl_set_object_gravity(obj, NorthWestGravity,
 140                                       NorthWestGravity);
 141                 moffset += obj->w + air;
 142                 fl_set_object_shortcut(obj, shortcut.c_str(), 1);
 143                 fl_set_object_callback(obj, C_Menubar_Pimpl_MenuCallback, 1);
 144
 145                 boost::shared_ptr<ItemInfo>
 146                         iteminfo(new ItemInfo(this, new MenuItem(*i), obj));
 147                 buttonlist_.push_back(iteminfo);
 148                 obj->u_vdata = iteminfo.get();
 149         }
 150
 151 }
 152
 153
 154 void Menubar::Pimpl::set(string const & menu_name)
 155 {
 156         lyxerr[Debug::GUI] << "Entering Menubar::Pimpl::set "
 157                            << "for menu `" << menu_name << "'" << endl;
 158
 159         if (menu_name != current_menu_name_) {
 160                 MenubarMap::iterator mbit = menubarmap_.find(menu_name);
 161
 162                 if (mbit == menubarmap_.end()) {
 163                         lyxerr << "ERROR:set: Unknown menu `" << menu_name
 164                                << "'" << endl;
 165                         return;
 166                 }
 167
 168                 if (current_group_) {
 169                         lyxerr[Debug::GUI] << "  hiding group "
 170                                            << current_group_ << endl;
 171                         fl_hide_object(current_group_);
 172                 }
 173
 174                 lyxerr[Debug::GUI] << "  showing group "
 175                                    << mbit->second << endl;
 176                 fl_show_object(mbit->second);
 177                 current_menu_name_ = menu_name;
 178                 current_group_ = mbit->second;
 179                 lyxerr[Debug::GUI] << "Menubar::Pimpl::set: Menubar set."
 180                                    << endl;
 181         } else
 182                 lyxerr [Debug::GUI] << "Menubar::Pimpl::set: Nothing to do."
 183                                     << endl;
 184 }
 185
 186
 187 void Menubar::Pimpl::openByName(string const & name)
 188 {
 189         if (menubackend_->getMenu(current_menu_name_).hasSubmenu(name)) {
 190                 for (ButtonList::const_iterator cit = buttonlist_.begin();
 191                      cit != buttonlist_.end(); ++cit) {
 192                         if ((*cit)->item_->submenu() == name) {
 193                                 MenuCallback((*cit)->obj_, 1);
 194                                 return;
 195                         }
 196                 }
 197         }
 198         lyxerr << "Menubar::Pimpl::openByName: menu "
 199                << name << " not found" << endl;
 200 }
 201
 202
 203 namespace {
 204
 205 inline
 206 string const limit_string_length(string const & str)
 207 {
 208         string::size_type const max_item_length = 45;
 209
 210         if (str.size() > max_item_length)
 211                 return str.substr(0, max_item_length - 3) + "...";
 212         else
 213                 return str;
 214 }
 215
 216
 217 int get_new_submenu(vector<int> & smn, Window win)
 218 {
 219         static size_type max_number_of_menus = 32;
 220         if (smn.size() >= max_number_of_menus)
 221                 max_number_of_menus =
 222                     fl_setpup_maxpup(static_cast<int>(2*smn.size()));
 223         int menu = fl_newpup(win);
 224         smn.push_back(menu);
 225         return menu;
 226 }
 227
 228
 229 size_type const max_number_of_items = 25;
 230
 231 inline
 232 string const fixlabel(string const & str)
 233 {
 234 #if FL_REVISION < 89
 235         return subst(str, '%', '?');
 236 #else
 237         return subst(str, "%", "%%");
 238 #endif
 239 }
 240
 241
 242
 243 void add_toc2(int menu, string const & extra_label,
 244               vector<int> & smn, Window win,
 245               vector<Buffer::TocItem> const & toc_list,
 246               size_type from, size_type to, int depth)
 247 {
 248         int shortcut_count = 0;
 249         if (to - from <= max_number_of_items) {
 250                 for (size_type i = from; i < to; ++i) {
 251                         int const action = lyxaction.
 252                                 getPseudoAction(LFUN_GOTO_PARAGRAPH,
 253                                                 tostr(toc_list[i].par->id()));
 254                         string label(4 * max(0, toc_list[i].depth - depth),' ');
 255                         label += fixlabel(toc_list[i].str);
 256                         label = limit_string_length(label);
 257                         label += "%x" + tostr(action + action_offset);
 258                         if (i == to - 1 && depth == 0)
 259                                 label += extra_label;
 260                         if (toc_list[i].depth == depth
 261                             && ++shortcut_count <= 9) {
 262                                 label += "%h";
 263                                 fl_addtopup(menu, label.c_str(),
 264                                             tostr(shortcut_count).c_str());
 265                         } else
 266                                 fl_addtopup(menu, label.c_str());
 267                 }
 268         } else {
 269                 size_type pos = from;
 270                 size_type count = 0;
 271                 while (pos < to) {
 272                         ++count;
 273                         if (count > max_number_of_items) {
 274                                 int menu2 = get_new_submenu(smn, win);
 275                                 add_toc2(menu2, extra_label, smn, win,
 276                                          toc_list, pos, to, depth);
 277                                 string label = _("More");
 278                                 label += "...%m";
 279                                 if (depth == 0)
 280                                         label += extra_label;
 281                                 fl_addtopup(menu, label.c_str(), menu2);
 282                                 break;
 283                         }
 284                         size_type new_pos = pos+1;
 285                         while (new_pos < to &&
 286                                toc_list[new_pos].depth > depth)
 287                                 ++new_pos;
 288
 289                         int const action = lyxaction.
 290                                 getPseudoAction(LFUN_GOTO_PARAGRAPH,
 291                                                 tostr(toc_list[pos].par->id()));
 292                         string label(4 * max(0, toc_list[pos].depth - depth), ' ');
 293                         label += fixlabel(toc_list[pos].str);
 294                         label = limit_string_length(label);
 295                         if (new_pos == to && depth == 0)
 296                                 label += extra_label;
 297                         string shortcut;
 298                         if (toc_list[pos].depth == depth &&
 299                             ++shortcut_count <= 9)
 300                                 shortcut = tostr(shortcut_count);
 301
 302                         if (new_pos == pos + 1) {
 303                                 label += "%x" + tostr(action + action_offset);
 304                                 if (!shortcut.empty()) {
 305                                         label += "%h";
 306                                         fl_addtopup(menu, label.c_str(),
 307                                                     shortcut.c_str());
 308                                 } else
 309                                         fl_addtopup(menu, label.c_str());
 310                         } else {
 311                                 int menu2 = get_new_submenu(smn, win);
 312                                 add_toc2(menu2, extra_label, smn, win,
 313                                          toc_list, pos, new_pos, depth+1);
 314                                 label += "%m";
 315                                 if (!shortcut.empty()) {
 316                                         label += "%h";
 317                                         fl_addtopup(menu, label.c_str(), menu2,
 318                                                     shortcut.c_str());
 319                                 } else
 320                                         fl_addtopup(menu, label.c_str(), menu2);
 321                         }
 322                         pos = new_pos;
 323                 }
 324         }
 325 }
 326
 327 } // namespace anon
 328
 329 void Menubar::Pimpl::add_toc(int menu, string const & extra_label,
 330                              vector<int> & smn, Window win)
 331 {
 332         Buffer::Lists toc_list = owner_->buffer()->getLists();
 333         Buffer::Lists::const_iterator cit = toc_list.begin();
 334         Buffer::Lists::const_iterator end = toc_list.end();
 335         for (; cit != end; ++cit) {
 336                 // Handle this elsewhere
 337                 if (cit->first == "TOC") continue;
 338
 339                 // All the rest is for floats
 340                 int menu_first_sub = get_new_submenu(smn, win);
 341                 int menu_current = menu_first_sub;
 342                 Buffer::SingleList::const_iterator ccit = cit->second.begin();
 343                 Buffer::SingleList::const_iterator eend = cit->second.end();
 344                 size_type count = 0;
 345                 for (; ccit != eend; ++ccit) {
 346                         ++count;
 347                         if (count > max_number_of_items) {
 348                                 int menu_tmp = get_new_submenu(smn, win);
 349                                 string label = _("More");
 350                                 label += "...%m";
 351                                 fl_addtopup(menu_current, label.c_str(), menu_tmp);
 352                                 count = 1;
 353                                 menu_current = menu_tmp;
 354                         }
 355                         int const action =
 356                                 lyxaction
 357                                 .getPseudoAction(LFUN_GOTO_PARAGRAPH,
 358                                                  tostr(ccit->par->id()));
 359                         string label = fixlabel(ccit->str);
 360                         label = limit_string_length(label);
 361                         label += "%x" + tostr(action + action_offset);
 362                         fl_addtopup(menu_current, label.c_str());
 363                 }
 364                 string const m = floatList[cit->first]->second.name() + "%m";
 365                 fl_addtopup(menu, m.c_str(), menu_first_sub);
 366         }
 367
 368
 369         // Handle normal TOC
 370         cit = toc_list.find("TOC");
 371         if (cit == end) {
 372                 string const tmp = _("No Table of contents%i") + extra_label;
 373                 fl_addtopup(menu, tmp.c_str());
 374                 return;
 375         } else {
 376                 add_toc2(menu, extra_label, smn, win,
 377                          cit->second, 0, cit->second.size(), 0);
 378         }
 379 }
 380
 381
 382 int Menubar::Pimpl::create_submenu(Window win, LyXView * view,
 383                                    string const & menu_name,
 384                                    vector<int> & smn)
 385 {
 386         if (!menubackend_->hasMenu(menu_name)){
 387                 lyxerr << "ERROR:create_submenu: Unknown menu `"
 388                        << menu_name << "'" << endl;
 389                 return -1;
 390         }
 391         Menu md;
 392         menubackend_->getMenu(menu_name).expand(md, owner_->buffer());
 393
 394         int const menu = get_new_submenu(smn, win);
 395         fl_setpup_softedge(menu, true);
 396         fl_setpup_bw(menu, -1);
 397         lyxerr[Debug::GUI] << "Adding menu " << menu
 398                            << " in deletion list" << endl;
 399
 400         // Compute the size of the largest label (because xforms is
 401         // not able to support shortcuts correctly...)
 402         int max_width = 0;
 403         string widest_label;
 404         Menu::const_iterator end = md.end();
 405         for (Menu::const_iterator i = md.begin(); i != end; ++i) {
 406                 MenuItem const & item = (*i);
 407                 if (item.kind() == MenuItem::Command) {
 408                         string const label = item.label() + '\t';
 409                         int const width = string_width(label);
 410                         if (width > max_width) {
 411                                 max_width = width;
 412                                 widest_label = label;
 413                         }
 414                 }
 415         }
 416         lyxerr[Debug::GUI] << "max_width=" << max_width
 417                            << ", widest_label=`" << widest_label
 418                            << "'" << endl;
 419
 420         // Compute where to put separators
 421         vector<string> extra_labels(md.size());
 422         vector<string>::iterator it = extra_labels.begin();
 423         vector<string>::iterator last = it;
 424         for (Menu::const_iterator i = md.begin(); i != end; ++i, ++it)
 425                 if (i->kind() == MenuItem::Separator)
 426                         *last = "%l";
 427                 else if (!i->optional() ||
 428                          !(view->getLyXFunc()->getStatus(i->action())
 429                            & func_status::Disabled))
 430                         last = it;
 431
 432         it = extra_labels.begin();
 433         for (Menu::const_iterator i = md.begin(); i != end; ++i, ++it) {
 434                 MenuItem const & item = (*i);
 435                 string & extra_label = *it;
 436
 437                 switch (item.kind()) {
 438                 case MenuItem::Command: {
 439                         func_status::value_type flag =
 440                                 view->getLyXFunc()->getStatus(item.action());
 441
 442                         // handle optional entries.
 443                         if (item.optional()
 444                             && (flag & func_status::Disabled)) {
 445                                 lyxerr[Debug::GUI]
 446                                         << "Skipping optional item "
 447                                         << item.label() << endl;
 448                                 break;
 449                         }
 450
 451                         // Get the keys bound to this action, but keep only the
 452                         // first one later
 453                         string const accel = toplevel_keymap->findbinding(kb_action(item.action()));
 454                         // Build the menu label from all the info
 455                         string label = item.label();
 456
 457                         if (!accel.empty()) {
 458                                 // Try to be clever and add  just enough
 459                                 // tabs to align shortcuts.
 460                                 do
 461                                         label += '\t';
 462                                 while (string_width(label) < max_width + 5);
 463                                 label += accel.substr(1,accel.find(']') - 1);
 464                         }
 465                         label += "%x" + tostr(item.action() + action_offset)
 466                                 + extra_label;
 467
 468                         // Modify the entry using the function status
 469                         string pupmode;
 470                         if (flag & (func_status::Disabled
 471                                     | func_status::Unknown))
 472                                 pupmode += "%i";
 473                         if (flag & func_status::ToggleOn)
 474                                 pupmode += "%B";
 475                         if (flag & func_status::ToggleOff)
 476                                 pupmode += "%b";
 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()->dispatch(choice - action_offset);
 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         std::for_each(submenus.begin(), submenus.end(), fl_freepup);
 597         // restore tabstop length
 598         fl_set_tabstop(default_tabstop);
 599
 600 }