src/frontends/xforms/Menubar_pimpl.C

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