src/frontends/xforms/Menubar_pimpl.C

   1 /**
   2  * \file Menubar_pimpl.C
   3  * Copyright 1999-2001 The LyX Team.
   4  * See the file COPYING.
   5  *
   6  * \author  Lars Gullik Bjønnes, larsbj@lyx.org
   7  */
   8
   9 #include <config.h>
  10
  11 #ifdef __GNUG__
  12 #pragma implementation
  13 #endif
  14
  15 #include "Menubar_pimpl.h"
  16 #include "MenuBackend.h"
  17 #include "LyXAction.h"
  18 #include "kbmap.h"
  19 #include "Dialogs.h"
  20 #include "XFormsView.h"
  21 #include "lyxfunc.h"
  22 #include "support/lstrings.h"
  23 #include "support/LAssert.h"
  24 #include "gettext.h"
  25 #include "debug.h"
  26 #include FORMS_H_LOCATION
  27
  28 #include <boost/scoped_ptr.hpp>
  29
  30 #include <algorithm>
  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
  42 namespace {
  43
  44 // Some constants
  45 int const MENU_LABEL_SIZE = FL_NORMAL_SIZE;
  46 int const MENU_LABEL_STYLE = FL_NORMAL_STYLE;
  47 int const mheight = 30;
  48 int const mbheight= 22;
  49 // where to place the menubar?
  50 int const yloc = (mheight - mbheight)/2; //air + bw;
  51 int const mbadd = 20; // menu button add (to width)
  52 // Some space between buttons on the menubar
  53 int const air = 2;
  54 char const * menu_tabstop = "aa";
  55 char const * default_tabstop = "aaaaaaaa";
  56 // We do not want to mix position values in a menu (like the index of
  57 // a submenu) with the action numbers which convey actual information.
  58 // Therefore we offset all the action values by an arbitrary large
  59 // constant.
  60 int const action_offset = 1000;
  61
  62 // This is used a few times below.
  63 inline
  64 int string_width(string const & str)
  65 {
  66         return fl_get_string_widthTAB(MENU_LABEL_STYLE, MENU_LABEL_SIZE,
  67                                       str.c_str(),
  68                                       static_cast<int>(str.length()));
  69 }
  70
  71 } // namespace anon
  72
  73
  74 extern "C" {
  75
  76         //Defined later, used in makeMenubar().
  77         static
  78         void C_Menubar_Pimpl_MenuCallback(FL_OBJECT * ob, long button)
  79         {
  80                 Menubar::Pimpl::MenuCallback(ob, button);
  81         }
  82
  83 }
  84
  85
  86 Menubar::Pimpl::Pimpl(LyXView * view, MenuBackend const & mb)
  87         : owner_(static_cast<XFormsView*>(view)), menubackend_(&mb)
  88 {
  89         makeMenubar(menubackend_->getMenubar());
  90 }
  91
  92
  93 void Menubar::Pimpl::makeMenubar(Menu const & menu)
  94 {
  95         FL_FORM * form = owner_->getForm();
  96         int moffset = 0;
  97
  98         // Create menu frame if there is non yet.
  99         FL_OBJECT * frame = fl_add_frame(FL_UP_FRAME, 0, 0,
 100                                          form->w, mheight, "");
 101         fl_set_object_resize(frame, FL_RESIZE_ALL);
 102         fl_set_object_gravity(frame, NorthWestGravity,
 103                               NorthEastGravity);
 104
 105         Menu::const_iterator i = menu.begin();
 106         Menu::const_iterator end = menu.end();
 107         for (; i != end; ++i) {
 108                 FL_OBJECT * obj;
 109                 if (i->kind() != MenuItem::Submenu) {
 110                         lyxerr << "ERROR: Menubar::Pimpl::createMenubar:"
 111                                 " only submenus can appear in a menubar"
 112                                << endl;
 113                         continue;
 114                 }
 115                 string const label = i->label();
 116                 string const shortcut = "#" + i->shortcut();
 117                 int const width = string_width(label);
 118                 obj = fl_add_button(FL_MENU_BUTTON,
 119                                     air + moffset, yloc,
 120                                     width + mbadd,
 121                                     mbheight,
 122                                     label.c_str());
 123                 fl_set_object_boxtype(obj, FL_FLAT_BOX);
 124                 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 125                 fl_set_object_lsize(obj, MENU_LABEL_SIZE);
 126                 fl_set_object_lstyle(obj, MENU_LABEL_STYLE);
 127                 fl_set_object_resize(obj, FL_RESIZE_ALL);
 128                 fl_set_object_gravity(obj, NorthWestGravity,
 129                                       NorthWestGravity);
 130                 moffset += obj->w + air;
 131                 fl_set_object_shortcut(obj, shortcut.c_str(), 1);
 132                 fl_set_object_callback(obj, C_Menubar_Pimpl_MenuCallback, 1);
 133
 134                 boost::shared_ptr<ItemInfo>
 135                         iteminfo(new ItemInfo(this, new MenuItem(*i), obj));
 136                 buttonlist_.push_back(iteminfo);
 137                 obj->u_vdata = iteminfo.get();
 138         }
 139
 140 }
 141
 142
 143 void Menubar::Pimpl::update()
 144 {
 145         // nothing yet
 146 }
 147
 148
 149 void Menubar::Pimpl::openByName(string const & name)
 150 {
 151         for (ButtonList::const_iterator cit = buttonlist_.begin();
 152              cit != buttonlist_.end(); ++cit) {
 153                 if ((*cit)->item_->submenuname() == name) {
 154                         MenuCallback((*cit)->obj_, 1);
 155                         return;
 156                 }
 157         }
 158
 159         lyxerr << "Menubar::Pimpl::openByName: menu "
 160                << name << " not found" << endl;
 161 }
 162
 163
 164 namespace {
 165
 166 Menu::size_type const max_number_of_items = 25;
 167
 168 int get_new_submenu(vector<int> & smn, Window win)
 169 {
 170         static size_type max_number_of_menus = 32;
 171         if (smn.size() >= max_number_of_menus)
 172                 max_number_of_menus =
 173                     fl_setpup_maxpup(static_cast<int>(2*smn.size()));
 174         int menu = fl_newpup(win);
 175         fl_setpup_softedge(menu, true);
 176         fl_setpup_bw(menu, -1);
 177         lyxerr[Debug::GUI] << "Adding menu " << menu
 178                            << " in deletion list" << endl;
 179         smn.push_back(menu);
 180         return menu;
 181 }
 182
 183
 184 string const fixlabel(string const & str)
 185 {
 186 #if FL_VERSION < 1 && FL_REVISION < 89
 187         return subst(str, '%', '?');
 188 #else
 189         return subst(str, "%", "%%");
 190 #endif
 191 }
 192
 193
 194
 195 } // namespace anon
 196
 197
 198
 199 int Menubar::Pimpl::create_submenu(Window win, XFormsView * view,
 200                                    Menu const & menu, vector<int> & smn,
 201                                    bool & all_disabled)
 202 {
 203         const int menuid = get_new_submenu(smn, win);
 204         lyxerr[Debug::GUI] << "Menubar::Pimpl::create_submenu: creating "
 205                            << menu.name() << " as menuid=" << menuid << endl;
 206
 207         // Compute the size of the largest label (because xforms is
 208         // not able to support shortcuts correctly...)
 209         int max_width = 0;
 210         string widest_label;
 211         Menu::const_iterator end = menu.end();
 212         for (Menu::const_iterator i = menu.begin(); i != end; ++i) {
 213                 MenuItem const & item = (*i);
 214                 if (item.kind() == MenuItem::Command) {
 215                         string const label = item.label() + '\t';
 216                         int const width = string_width(label);
 217                         if (width > max_width) {
 218                                 max_width = width;
 219                                 widest_label = label;
 220                         }
 221                 }
 222         }
 223         lyxerr[Debug::GUI] << "max_width=" << max_width
 224                            << ", widest_label=`" << widest_label
 225                            << "'" << endl;
 226
 227         // Compute where to put separators
 228         vector<string> extra_labels(menu.size());
 229         vector<string>::iterator it = extra_labels.begin();
 230         vector<string>::iterator last = it;
 231         for (Menu::const_iterator i = menu.begin(); i != end; ++i, ++it)
 232                 if (i->kind() == MenuItem::Separator)
 233                         *last = "%l";
 234                 else if (!i->optional() ||
 235                          !(view->getLyXFunc()->getStatus(i->action()).disabled()))
 236                         last = it;
 237
 238         it = extra_labels.begin();
 239         size_type count = 0;
 240         all_disabled = true;
 241         int curmenuid = menuid;
 242         for (Menu::const_iterator i = menu.begin(); i != end; ++i, ++it) {
 243                 MenuItem const & item = (*i);
 244                 string & extra_label = *it;
 245
 246                 ++count;
 247                 if (count > max_number_of_items) {
 248                         int tmpmenuid = get_new_submenu(smn, win);
 249                         lyxerr[Debug::GUI] << "Too many items, creating "
 250                                            << "new menu " << tmpmenuid << endl;
 251                         string label = _("More");
 252                         label += "...%m";
 253                         fl_addtopup(curmenuid, label.c_str(), tmpmenuid);
 254                         count = 1;
 255                         curmenuid = tmpmenuid;
 256                 }
 257
 258                 switch (item.kind()) {
 259                 case MenuItem::Command: {
 260                         FuncStatus const flag =
 261                                 view->getLyXFunc()->getStatus(item.action());
 262                         // handle optional entries.
 263                         if (item.optional()
 264                             && (flag.disabled())) {
 265                                 lyxerr[Debug::GUI]
 266                                         << "Skipping optional item "
 267                                         << item.label() << endl;
 268                                 break;
 269                         }
 270
 271                         // Get the keys bound to this action, but keep only the
 272                         // first one later
 273                         string const accel =
 274                                 toplevel_keymap->findbinding(item.action());
 275                         // Build the menu label from all the info
 276                         string label = fixlabel(item.label());
 277
 278                         if (!accel.empty()) {
 279                                 // Try to be clever and add  just enough
 280                                 // tabs to align shortcuts.
 281                                 do
 282                                         label += '\t';
 283                                 while (string_width(label) < max_width + 5);
 284                                 label += accel.substr(1,accel.find(']') - 1);
 285                         }
 286                         label += "%x" + tostr(item.action() + action_offset)
 287                                 + extra_label;
 288
 289                         // Modify the entry using the function status
 290                         string pupmode;
 291                         if (flag.onoff(true))
 292                                 pupmode += "%B";
 293                         if (flag.onoff(false))
 294                                 pupmode += "%b";
 295                         if (flag.disabled() || flag.unknown())
 296                                 pupmode += "%i";
 297                         else
 298                                 all_disabled = false;
 299                         label += pupmode;
 300
 301                         // Finally the menu shortcut
 302                         string shortcut = item.shortcut();
 303
 304                         if (!shortcut.empty()) {
 305                                 shortcut += lowercase(shortcut[0]);
 306                                 label += "%h";
 307                                 fl_addtopup(curmenuid, label.c_str(),
 308                                             shortcut.c_str());
 309                         } else
 310                                 fl_addtopup(curmenuid, label.c_str());
 311
 312                         lyxerr[Debug::GUI] << "Command: \""
 313                                            << lyxaction.getActionName(item.action())
 314                                            << "\", binding \"" << accel
 315                                            << "\", shortcut \"" << shortcut
 316                                            << "\" (added to menu"
 317                                            << curmenuid << ")" << endl;
 318                         break;
 319                 }
 320
 321                 case MenuItem::Submenu: {
 322                         bool sub_all_disabled;
 323                         int submenuid = create_submenu(win, view,
 324                                                        *item.submenu(), smn,
 325                                                        sub_all_disabled);
 326                         all_disabled &= sub_all_disabled;
 327                         if (submenuid == -1)
 328                                 return -1;
 329                         string label = fixlabel(item.label());
 330                         label += extra_label + "%m";
 331                         if (sub_all_disabled)
 332                                 label += "%i";
 333                         string shortcut = item.shortcut();
 334                         if (!shortcut.empty()) {
 335                                 shortcut += lowercase(shortcut[0]);
 336                                 label += "%h";
 337                                 fl_addtopup(curmenuid, label.c_str(),
 338                                             submenuid, shortcut.c_str());
 339                         } else {
 340                                 fl_addtopup(curmenuid, label.c_str(),
 341                                             submenuid);
 342                         }
 343                         break;
 344                 }
 345
 346                 case MenuItem::Separator:
 347                         // already done, and if it was the first one,
 348                         // we just ignore it.
 349                         break;
 350
 351
 352                 default:
 353                         lyxerr << "Menubar::Pimpl::create_submenu: "
 354                                 "this should not happen" << endl;
 355                         break;
 356                 }
 357         }
 358         return menuid;
 359 }
 360
 361
 362 void Menubar::Pimpl::MenuCallback(FL_OBJECT * ob, long button)
 363 {
 364         ItemInfo * iteminfo = static_cast<ItemInfo *>(ob->u_vdata);
 365         XFormsView * view = iteminfo->pimpl_->owner_;
 366         MenuItem const * item = iteminfo->item_.get();
 367
 368         if (button == 1) {
 369                 // set the pseudo menu-button
 370                 fl_set_object_boxtype(ob, FL_DOWN_BOX);
 371                 fl_set_button(ob, 0);
 372                 fl_redraw_object(ob);
 373         }
 374
 375         // Paranoia check
 376         lyx::Assert(item->kind() == MenuItem::Submenu);
 377
 378         // set tabstop length
 379         fl_set_tabstop(menu_tabstop);
 380
 381         MenuBackend const * menubackend_ = iteminfo->pimpl_->menubackend_;
 382         Menu tomenu;
 383         Menu const frommenu = menubackend_->getMenu(item->submenuname());
 384         menubackend_->expand(frommenu, tomenu, view->buffer());
 385         vector<int> submenus;
 386         bool all_disabled = true;
 387         int menu = iteminfo->pimpl_->
 388                 create_submenu(FL_ObjWin(ob), view, tomenu,
 389                                submenus, all_disabled);
 390         if (menu != -1) {
 391                 // place popup
 392                 fl_setpup_position(view->getForm()->x + ob->x,
 393                                    view->getForm()->y + ob->y + ob->h + 10);
 394                 int choice = fl_dopup(menu);
 395
 396                 if (button == 1) {
 397                                 // set the pseudo menu-button back
 398                         fl_set_object_boxtype(ob, FL_FLAT_BOX);
 399                         fl_redraw_object(ob);
 400                 }
 401
 402                 // If the action value is too low, then it is not a
 403                 // valid action, but something else.
 404                 if (choice >= action_offset + 1) {
 405                         view->getLyXFunc()->dispatch(choice - action_offset, true);
 406                 } else {
 407                         lyxerr[Debug::GUI]
 408                                 << "MenuCallback: ignoring bogus action "
 409                                 << choice << endl;
 410                 }
 411         } else {
 412                 lyxerr << "Error in MenuCallback" << endl;
 413         }
 414
 415         for_each(submenus.begin(), submenus.end(), fl_freepup);
 416         // restore tabstop length
 417         fl_set_tabstop(default_tabstop);
 418
 419 }