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 "Dialogs.h"
  25 #include "LyXView.h"
  26 #include "MenuBackend.h"
  27 #include "Menubar_pimpl.h"
  28
  29 using std::endl;
  30 using std::vector;
  31 using std::max;
  32 using std::min;
  33
  34 typedef vector<int>::size_type size_type;
  35
  36 extern boost::scoped_ptr<kb_keymap> toplevel_keymap;
  37 extern LyXAction lyxaction;
  38
  39 // Some constants
  40 static const int MENU_LABEL_SIZE = FL_NORMAL_SIZE;
  41 static const int mheight = 30;
  42 static const int mbheight= 22;
  43 // where to place the menubar?
  44 static const int yloc = (mheight - mbheight)/2; //air + bw;
  45 static const int mbadd = 20; // menu button add (to width)
  46 // Some space between buttons on the menubar
  47 static const int air = 2;
  48 static char const * menu_tabstop = "aa";
  49 static char const * default_tabstop = "aaaaaaaa";
  50 // We do not want to mix position values in a menu (like the index of
  51 // a submenu) with the action numbers which convey actual information.
  52 // Therefore we offset all the action values by an arbitrary large
  53 // constant.
  54 static const int action_offset = 1000;
  55
  56
  57 //Defined later, used in makeMenubar().
  58 extern "C"
  59 void C_Menubar_Pimpl_MenuCallback(FL_OBJECT * ob, long button);
  60
  61 // This is used a few times below.
  62 static 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
  71 Menubar::Pimpl::Pimpl(LyXView * view, MenuBackend const & mb)
  72         : owner_(view), menubackend_(&mb), current_group_(0)
  73 {
  74         for (MenuBackend::const_iterator menu = menubackend_->begin();
  75             menu != menubackend_->end() ; ++menu) {
  76                 if (menu->menubar()) {
  77                         FL_OBJECT * group = fl_bgn_group();
  78                         makeMenubar(*menu);
  79                         fl_end_group();
  80                         fl_hide_object(group);
  81                         lyxerr[Debug::GUI]
  82                                 << "Menubar::Pimpl::Pimpl: "
  83                                 << "creating and hiding group " << group
  84                                 << " for menubar " << menu->name() << endl;
  85                         menubarmap_[menu->name()] = group;
  86                 }
  87         }
  88 }
  89
  90
  91 void Menubar::Pimpl::makeMenubar(Menu const &menu)
  92 {
  93         FL_FORM * form = owner_->getForm();
  94         int moffset = 0;
  95
  96         // Create menu frame if there is non yet.
  97         FL_OBJECT * frame = fl_add_frame(FL_UP_FRAME, 0, 0,
  98                                          form->w, mheight, "");
  99         fl_set_object_resize(frame, FL_RESIZE_ALL);
 100         fl_set_object_gravity(frame, NorthWestGravity,
 101                               NorthEastGravity);
 102
 103         for (Menu::const_iterator i = menu.begin();
 104              i != menu.end(); ++i) {
 105                 FL_OBJECT * obj;
 106                 if (i->kind() != MenuItem::Submenu) {
 107                         lyxerr << "ERROR: Menubar::Pimpl::createMenubar:"
 108                                 " only submenus can appear in a menubar";
 109                         break;
 110                 }
 111                 string label = i->label();
 112                 string shortcut = "#" + i->shortcut();
 113                 int width = string_width(label);
 114                 obj = fl_add_button(FL_MENU_BUTTON,
 115                                     air + moffset, yloc,
 116                                     width + mbadd,
 117                                     mbheight,
 118                                     label.c_str());
 119                 fl_set_object_boxtype(obj, FL_FLAT_BOX);
 120                 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 121                 fl_set_object_lsize(obj, MENU_LABEL_SIZE);
 122                 fl_set_object_lstyle(obj, FL_NORMAL_STYLE);
 123                 fl_set_object_resize(obj, FL_RESIZE_ALL);
 124                 fl_set_object_gravity(obj, NorthWestGravity,
 125                                       NorthWestGravity);
 126                 moffset += obj->w + air;
 127                 fl_set_object_shortcut(obj, shortcut.c_str(), 1);
 128                 fl_set_object_callback(obj, C_Menubar_Pimpl_MenuCallback, 1);
 129
 130                 boost::shared_ptr<ItemInfo> iteminfo(new ItemInfo(this,
 131                                                    new MenuItem(*i), obj));
 132                 buttonlist_.push_back(iteminfo);
 133                 obj->u_vdata = iteminfo.get();
 134         }
 135
 136 }
 137
 138 void Menubar::Pimpl::set(string const & menu_name)
 139 {
 140         lyxerr[Debug::GUI] << "Entering Menubar::Pimpl::set "
 141                            << "for menu `" << menu_name << "'" << endl;
 142
 143         if (menu_name != current_menu_name_) {
 144                 MenubarMap::iterator mbit = menubarmap_.find(menu_name);
 145
 146                 if (mbit == menubarmap_.end()) {
 147                         lyxerr << "ERROR:set: Unknown menu `" << menu_name
 148                                << "'" << endl;
 149                         return;
 150                 }
 151
 152                 if (current_group_) {
 153                         lyxerr[Debug::GUI] << "  hiding group "
 154                                            << current_group_ << endl;
 155                         fl_hide_object(current_group_);
 156                 }
 157
 158                 lyxerr[Debug::GUI] << "  showing group "
 159                                    << mbit->second << endl;
 160                 fl_show_object(mbit->second);
 161                 current_menu_name_ = menu_name;
 162                 current_group_ = mbit->second;
 163                 lyxerr[Debug::GUI] << "Menubar::Pimpl::set: Menubar set."
 164                                    << endl;
 165         }
 166         else
 167                 lyxerr [Debug::GUI] << "Menubar::Pimpl::set: Nothing to do."
 168                                     << endl;
 169 }
 170
 171 void Menubar::Pimpl::openByName(string const & name)
 172 {
 173         if (menubackend_->getMenu(current_menu_name_).hasSubmenu(name)) {
 174                 for (ButtonList::const_iterator cit = buttonlist_.begin();
 175                      cit != buttonlist_.end(); ++cit) {
 176                         if ((*cit)->item_->submenu() == name) {
 177                                 MenuCallback((*cit)->obj_, 1);
 178                                 return;
 179                         }
 180                 }
 181         }
 182         lyxerr << "Menubar::Pimpl::openByName: menu "
 183                << name << " not found" << endl;
 184 }
 185
 186
 187 static inline
 188 string const limit_string_length(string const & str)
 189 {
 190         string::size_type const max_item_length = 45;
 191
 192         if (str.size() > max_item_length)
 193                 return str.substr(0, max_item_length - 3) + "...";
 194         else
 195                 return str;
 196 }
 197
 198
 199 static
 200 int get_new_submenu(vector<int> & smn, Window win)
 201 {
 202         static size_type max_number_of_menus = 32;
 203         if (smn.size() >= max_number_of_menus)
 204                 max_number_of_menus =
 205                     fl_setpup_maxpup(static_cast<int>(2*smn.size()));
 206         int menu = fl_newpup(win);
 207         smn.push_back(menu);
 208         return menu;
 209 }
 210
 211
 212 size_type const max_number_of_items = 25;
 213
 214 static inline
 215 string const fixlabel(string const & str)
 216 {
 217 #if FL_REVISION < 89
 218         return subst(str, '%', '?');
 219 #else
 220         return subst(str, "%", "%%");
 221 #endif
 222 }
 223
 224
 225 void add_toc2(int menu, string const & extra_label,
 226               vector<int> & smn, Window win,
 227               vector<Buffer::TocItem> const & toc_list,
 228               size_type from, size_type to, int depth)
 229 {
 230         int shortcut_count = 0;
 231         if (to - from <= max_number_of_items) {
 232                 for (size_type i = from; i < to; ++i) {
 233                         int const action = lyxaction.
 234                                 getPseudoAction(LFUN_GOTO_PARAGRAPH,
 235                                                 tostr(toc_list[i].par->id()));
 236                         string label(4 * max(0, toc_list[i].depth - depth),' ');
 237                         label += fixlabel(toc_list[i].str);
 238                         label = limit_string_length(label);
 239                         label += "%x" + tostr(action + action_offset);
 240                         if (i == to - 1 && depth == 0)
 241                                 label += extra_label;
 242                         if (toc_list[i].depth == depth
 243                             && ++shortcut_count <= 9) {
 244                                 label += "%h";
 245                                 fl_addtopup(menu, label.c_str(),
 246                                             tostr(shortcut_count).c_str());
 247                         } else
 248                                 fl_addtopup(menu, label.c_str());
 249                 }
 250         } else {
 251                 size_type pos = from;
 252                 size_type count = 0;
 253                 while (pos < to) {
 254                         ++count;
 255                         if (count > max_number_of_items) {
 256                                 int menu2 = get_new_submenu(smn, win);
 257                                 add_toc2(menu2, extra_label, smn, win,
 258                                          toc_list, pos, to, depth);
 259                                 string label = _("More");
 260                                 label += "...%m";
 261                                 if (depth == 0)
 262                                         label += extra_label;
 263                                 fl_addtopup(menu, label.c_str(), menu2);
 264                                 break;
 265                         }
 266                         size_type new_pos = pos+1;
 267                         while (new_pos < to &&
 268                                toc_list[new_pos].depth > depth)
 269                                 ++new_pos;
 270
 271                         int const action = lyxaction.
 272                                 getPseudoAction(LFUN_GOTO_PARAGRAPH,
 273                                                 tostr(toc_list[pos].par->id()));
 274                         string label(4 * max(0, toc_list[pos].depth - depth), ' ');
 275                         label += fixlabel(toc_list[pos].str);
 276                         label = limit_string_length(label);
 277                         if (new_pos == to && depth == 0)
 278                                 label += extra_label;
 279                         string shortcut;
 280                         if (toc_list[pos].depth == depth &&
 281                             ++shortcut_count <= 9)
 282                                 shortcut = tostr(shortcut_count);
 283
 284                         if (new_pos == pos + 1) {
 285                                 label += "%x" + tostr(action + action_offset);
 286                                 if (!shortcut.empty()) {
 287                                         label += "%h";
 288                                         fl_addtopup(menu, label.c_str(),
 289                                                     shortcut.c_str());
 290                                 } else
 291                                         fl_addtopup(menu, label.c_str());
 292                         } else {
 293                                 int menu2 = get_new_submenu(smn, win);
 294                                 add_toc2(menu2, extra_label, smn, win,
 295                                          toc_list, pos, new_pos, depth+1);
 296                                 label += "%m";
 297                                 if (!shortcut.empty()) {
 298                                         label += "%h";
 299                                         fl_addtopup(menu, label.c_str(), menu2,
 300                                                     shortcut.c_str());
 301                                 } else
 302                                         fl_addtopup(menu, label.c_str(), menu2);
 303                         }
 304                         pos = new_pos;
 305                 }
 306         }
 307 }
 308
 309
 310 void Menubar::Pimpl::add_toc(int menu, string const & extra_label,
 311                              vector<int> & smn, Window win)
 312 {
 313 #if 0
 314         //xgettext:no-c-format
 315         static char const * MenuNames[3] = { N_("List of Figures%m"),
 316         //xgettext:no-c-format
 317                                              N_("List of Tables%m"),
 318         //xgettext:no-c-format
 319                                              N_("List of Algorithms%m") };
 320
 321         vector<vector<Buffer::TocItem> > toc_list =
 322                 owner_->buffer()->getTocList();
 323
 324         // Handle LOF/LOT/LOA
 325         int max_nonempty = 0;
 326         for (int i = 1; i <= 3; ++i)
 327                 if (!toc_list[i].empty())
 328                         max_nonempty = i;
 329
 330         for (int j = 1; j <= 3; ++j)
 331                 if (!toc_list[j].empty()) {
 332                         int menu2 = get_new_submenu(smn, win);
 333                         for (size_type i = 0; i < toc_list[j].size(); ++i) {
 334                                 if (i > max_number_of_items) {
 335                                         fl_addtopup(menu2, ". . .%d");
 336                                         break;
 337                                 }
 338                                 int const action = lyxaction.
 339                                         getPseudoAction(LFUN_GOTO_PARAGRAPH,
 340                                                         tostr(toc_list[j][i].par->id()));
 341                                 string label = fixlabel(toc_list[j][i].str);
 342                                 label = limit_string_length(label);
 343                                 label += "%x" + tostr(action + action_offset);
 344                                 fl_addtopup(menu2, label.c_str());
 345                         }
 346                         if (j == max_nonempty) {
 347                                 string label = _(MenuNames[j - 1]);
 348                                 label += "%l";
 349                                 fl_addtopup(menu, label.c_str(), menu2);
 350                         } else
 351                                 fl_addtopup(menu, _(MenuNames[j - 1]), menu2);
 352                 }
 353
 354         // Handle normal TOC
 355         if (max_nonempty == 0 && toc_list[0].empty()) {
 356                 fl_addtopup(menu, (_("No Table of Contents%i")
 357                                    + extra_label).c_str());
 358                 return;
 359         }
 360
 361         add_toc2(menu, extra_label, smn, win,
 362                  toc_list[0], 0, toc_list[0].size(), 0);
 363 #else
 364 #warning Fix Me! (Lgb)
 365         Buffer::Lists toc_list = owner_->buffer()->getLists();
 366         Buffer::Lists::const_iterator cit = toc_list.begin();
 367         Buffer::Lists::const_iterator end = toc_list.end();
 368         for (; cit != end; ++cit) {
 369                 // Handle this elsewhere
 370                 if (cit->first == "TOC") continue;
 371
 372                 int menu2 = get_new_submenu(smn, win);
 373                 Buffer::SingleList::const_iterator ccit = cit->second.begin();
 374                 Buffer::SingleList::const_iterator eend = cit->second.end();
 375                 for (; ccit != eend; ++ccit) {
 376                         int const action =
 377                                 lyxaction
 378                                 .getPseudoAction(LFUN_GOTO_PARAGRAPH,
 379                                                  tostr(ccit->par->id()));
 380                         string label = fixlabel(ccit->str);
 381                         label = limit_string_length(label);
 382                         label += "%x" + tostr(action + action_offset);
 383                         fl_addtopup(menu2, label.c_str());
 384                 }
 385                 string const m = cit->first + "%m";
 386                 fl_addtopup(menu, m.c_str(), menu2);
 387         }
 388
 389
 390         // Handle normal TOC
 391         cit = toc_list.find("TOC");
 392         if (cit == end) {
 393                 string const tmp = _("No Table of contents%i") + extra_label;
 394                 fl_addtopup(menu, tmp.c_str());
 395                 return;
 396         } else {
 397                 add_toc2(menu, extra_label, smn, win,
 398                          cit->second, 0, cit->second.size(), 0);
 399         }
 400
 401 #endif
 402 }
 403
 404 int Menubar::Pimpl::create_submenu(Window win, LyXView * view,
 405                                    string const & menu_name,
 406                                    vector<int> & smn)
 407 {
 408         if (!menubackend_->hasMenu(menu_name)){
 409                 lyxerr << "ERROR:create_submenu: Unknown menu `"
 410                        << menu_name << "'" << endl;
 411                 return -1;
 412         }
 413         Menu md = Menu();
 414         menubackend_->getMenu(menu_name).expand(md, owner_->buffer());
 415
 416         int menu = get_new_submenu(smn, win);
 417         fl_setpup_softedge(menu, true);
 418         fl_setpup_bw(menu, -1);
 419         lyxerr[Debug::GUI] << "Adding menu " << menu
 420                            << " in deletion list" << endl;
 421
 422         // Compute the size of the largest label (because xforms is
 423         // not able to support shortcuts correctly...)
 424         int max_width = 0;
 425         string widest_label;
 426         Menu::const_iterator end = md.end();
 427         for (Menu::const_iterator i = md.begin(); i != end; ++i) {
 428                 MenuItem const & item = (*i);
 429                 if (item.kind() == MenuItem::Command) {
 430                         string label = item.label() + '\t';
 431                         int width = string_width(label);
 432                         if (width > max_width) {
 433                                 max_width = width;
 434                                 widest_label = label;
 435                         }
 436                 }
 437         }
 438         lyxerr[Debug::GUI] << "max_width=" << max_width
 439                            << ", widest_label=`" << widest_label
 440                            << "'" << endl;
 441
 442         // Compute where to put separators
 443         vector<string> extra_labels(md.size());
 444         vector<string>::iterator it = extra_labels.begin();
 445         vector<string>::iterator last = it;
 446         for (Menu::const_iterator i = md.begin(); i != end; ++i, ++it)
 447                 if (i->kind() == MenuItem::Separator)
 448                         *last = "%l";
 449                 else if (!i->optional() ||
 450                          !(view->getLyXFunc()->getStatus(i->action()) & LyXFunc::Disabled))
 451                         last = it;
 452
 453         it = extra_labels.begin();
 454         for (Menu::const_iterator i = md.begin(); i != end; ++i, ++it) {
 455                 MenuItem const & item = (*i);
 456                 string & extra_label = *it;
 457
 458                 switch (item.kind()) {
 459                 case MenuItem::Command: {
 460                         LyXFunc::func_status flag =
 461                                 view->getLyXFunc()->getStatus(item.action());
 462
 463                         // handle optional entries.
 464                         if (item.optional() && (flag & LyXFunc::Disabled)) {
 465                                 lyxerr[Debug::GUI]
 466                                         << "Skipping optional item "
 467                                         << item.label() << endl;
 468                                 break;
 469                         }
 470
 471                         // Get the keys bound to this action, but keep only the
 472                         // first one later
 473                         string const accel = toplevel_keymap->findbinding(item.action());
 474                         // Build the menu label from all the info
 475                         string label = item.label();
 476
 477                         if (!accel.empty()) {
 478                                 // Try to be clever and add  just enough
 479                                 // tabs to align shortcuts.
 480                                 do
 481                                         label += '\t';
 482                                 while (string_width(label) < max_width + 5);
 483                                 label += accel.substr(1,accel.find(']') - 1);
 484                         }
 485                         label += "%x" + tostr(item.action() + action_offset)
 486                                 + extra_label;
 487
 488                         // Modify the entry using the function status
 489                         string pupmode;
 490                         if (flag & (LyXFunc::Disabled | LyXFunc::Unknown))
 491                                 pupmode += "%i";
 492                         if (flag & LyXFunc::ToggleOn)
 493                                 pupmode += "%B";
 494                         if (flag & LyXFunc::ToggleOff)
 495                                 pupmode += "%b";
 496                         label += pupmode;
 497
 498                         // Finally the menu shortcut
 499                         string shortcut = item.shortcut();
 500
 501                         if (!shortcut.empty()) {
 502                                 shortcut += lowercase(shortcut[0]);
 503                                 label += "%h";
 504                                 fl_addtopup(menu, label.c_str(),
 505                                             shortcut.c_str());
 506                         } else
 507                                 fl_addtopup(menu, label.c_str());
 508
 509                         lyxerr[Debug::GUI] << "Command: \""
 510                                            << lyxaction.getActionName(item.action())
 511                                            << "\", binding \"" << accel
 512                                            << "\", shortcut \"" << shortcut
 513                                            << "\"" << endl;
 514                         break;
 515                 }
 516
 517                 case MenuItem::Submenu: {
 518                         int submenu = create_submenu(win, view,
 519                                                      item.submenu(), smn);
 520                         if (submenu == -1)
 521                                 return -1;
 522                         string label = item.label();
 523                         label += extra_label + "%m";
 524                         string shortcut = item.shortcut();
 525                         if (!shortcut.empty()) {
 526                                 shortcut += lowercase(shortcut[0]);
 527                                 label += "%h";
 528                                 fl_addtopup(menu, label.c_str(),
 529                                             submenu, shortcut.c_str());
 530                         }
 531                         else {
 532                                 fl_addtopup(menu, label.c_str(), submenu);
 533                         }
 534                         break;
 535                 }
 536
 537                 case MenuItem::Separator:
 538                         // already done, and if it was the first one,
 539                         // we just ignore it.
 540                         break;
 541
 542                 case MenuItem::Toc:
 543                         add_toc(menu, extra_label, smn, win);
 544                         break;
 545
 546                 case MenuItem::Documents:
 547                 case MenuItem::Lastfiles:
 548                 case MenuItem::ViewFormats:
 549                 case MenuItem::UpdateFormats:
 550                 case MenuItem::ExportFormats:
 551                 case MenuItem::ImportFormats:
 552                         lyxerr << "Menubar::Pimpl::create_submenu: "
 553                                 "this should not happen" << endl;
 554                         break;
 555
 556                 }
 557         }
 558         return menu;
 559 }
 560
 561
 562 extern "C"
 563 void C_Menubar_Pimpl_MenuCallback(FL_OBJECT * ob, long button)
 564 {
 565         Menubar::Pimpl::MenuCallback(ob, button);
 566 }
 567
 568
 569 void Menubar::Pimpl::MenuCallback(FL_OBJECT * ob, long button)
 570 {
 571         ItemInfo * iteminfo = static_cast<ItemInfo *>(ob->u_vdata);
 572 //      lyxerr << "MenuCallback: ItemInfo address=" << iteminfo
 573 //             << "Val=(pimpl_=" << iteminfo->pimpl_
 574 //             << ", item_=" << iteminfo->item_
 575 //             << ", obj_=" << iteminfo->obj_ << ")" <<endl;
 576
 577         LyXView * view = iteminfo->pimpl_->owner_;
 578         MenuItem const * item = iteminfo->item_.get();
 579
 580         /* get the splash out of the way. It would be nicer
 581          * to only have this code at the start, but xforms
 582          * makes it too ugly to do
 583          */
 584         view->getDialogs()->destroySplash();
 585
 586         if (button == 1) {
 587                 // set the pseudo menu-button
 588                 fl_set_object_boxtype(ob, FL_DOWN_BOX);
 589                 fl_set_button(ob, 0);
 590                 fl_redraw_object(ob);
 591         }
 592
 593         // Paranoia check
 594         Assert(item->kind() == MenuItem::Submenu);
 595
 596         // set tabstop length
 597         fl_set_tabstop(menu_tabstop);
 598         vector<int> submenus;
 599         int menu = iteminfo->pimpl_->
 600                 create_submenu(FL_ObjWin(ob), view,
 601                                item->submenu(), submenus);
 602         if (menu != -1) {
 603                 // place popup
 604                 fl_setpup_position(view->getForm()->x + ob->x,
 605                                    view->getForm()->y + ob->y + ob->h + 10);
 606                 int choice = fl_dopup(menu);
 607
 608                 if (button == 1) {
 609                                 // set the pseudo menu-button back
 610                         fl_set_object_boxtype(ob, FL_FLAT_BOX);
 611                         fl_redraw_object(ob);
 612                 }
 613
 614                 // If the action value is too low, then it is not a
 615                 // valid action, but something else.
 616                 if (choice >= action_offset + 1) {
 617                         view->getLyXFunc()->Dispatch(choice - action_offset);
 618                 }
 619                 else {
 620                         lyxerr[Debug::GUI]
 621                                 << "MenuCallback: ignoring bogus action "
 622                                 << choice << endl;
 623                 }
 624         }
 625         else
 626                 lyxerr << "Error in MenuCallback" << endl;
 627
 628         std::for_each(submenus.begin(), submenus.end(), fl_freepup);
 629         // restore tabstop length
 630         fl_set_tabstop(default_tabstop);
 631
 632 }