src/frontends/qt4/GuiToolbar.cpp

   1 /**
   2  * \file qt4/GuiToolbar.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author John Levon
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author Stefan Schimanski
  11  * \author Abdelrazak Younes
  12  *
  13  * Full author contact details are available in file CREDITS.
  14  */
  15
  16 #include <config.h>
  17
  18 #include "GuiView.h"
  19 #include "GuiCommandBuffer.h"
  20 #include "GuiToolbar.h"
  21 #include "LyXAction.h"
  22 #include "Action.h"
  23 #include "qt_helpers.h"
  24 #include "InsertTableWidget.h"
  25
  26 #include "Buffer.h"
  27 #include "BufferParams.h"
  28 #include "BufferView.h"
  29 #include "Cursor.h"
  30 #include "FuncRequest.h"
  31 #include "FuncStatus.h"
  32 #include "IconPalette.h"
  33 #include "Layout.h"
  34 #include "LyXFunc.h"
  35 #include "LyXRC.h"
  36 #include "Paragraph.h"
  37 #include "TextClass.h"
  38 #include "ToolbarBackend.h"
  39
  40 #include "support/debug.h"
  41 #include "support/filetools.h"
  42 #include "support/gettext.h"
  43 #include "support/lstrings.h"
  44 #include "support/lyxalgo.h" // sorted
  45
  46 #include <QAbstractItemDelegate>
  47 #include <QAbstractTextDocumentLayout>
  48 #include <QApplication>
  49 #include <QComboBox>
  50 #include <QFontMetrics>
  51 #include <QHeaderView>
  52 #include <QKeyEvent>
  53 #include <QList>
  54 #include <QListView>
  55 #include <QPainter>
  56 #include <QPixmap>
  57 #include <QSortFilterProxyModel>
  58 #include <QStandardItem>
  59 #include <QStandardItemModel>
  60 #include <QTextDocument>
  61 #include <QTextFrame>
  62 #include <QToolBar>
  63 #include <QToolButton>
  64 #include <QVariant>
  65
  66 #include <boost/assert.hpp>
  67
  68 #include <map>
  69 #include <vector>
  70
  71 using namespace std;
  72 using namespace lyx::support;
  73
  74 static void initializeResources()
  75 {
  76         static bool initialized = false;
  77         if (!initialized) {
  78                 Q_INIT_RESOURCE(Resources);
  79                 initialized = true;
  80         }
  81 }
  82
  83
  84 namespace lyx {
  85 namespace frontend {
  86
  87 namespace {
  88
  89 struct PngMap {
  90         QString key;
  91         QString value;
  92 };
  93
  94
  95 bool operator<(PngMap const & lhs, PngMap const & rhs)
  96 {
  97                 return lhs.key < rhs.key;
  98 }
  99
 100
 101 class CompareKey {
 102 public:
 103         CompareKey(QString const & name) : name_(name) {}
 104         bool operator()(PngMap const & other) const { return other.key == name_; }
 105 private:
 106         QString const name_;
 107 };
 108
 109
 110 PngMap sorted_png_map[] = {
 111         { "Bumpeq", "bumpeq2" },
 112         { "Cap", "cap2" },
 113         { "Cup", "cup2" },
 114         { "Delta", "delta2" },
 115         { "Downarrow", "downarrow2" },
 116         { "Gamma", "gamma2" },
 117         { "Lambda", "lambda2" },
 118         { "Leftarrow", "leftarrow2" },
 119         { "Leftrightarrow", "leftrightarrow2" },
 120         { "Longleftarrow", "longleftarrow2" },
 121         { "Longleftrightarrow", "longleftrightarrow2" },
 122         { "Longrightarrow", "longrightarrow2" },
 123         { "Omega", "omega2" },
 124         { "Phi", "phi2" },
 125         { "Pi", "pi2" },
 126         { "Psi", "psi2" },
 127         { "Rightarrow", "rightarrow2" },
 128         { "Sigma", "sigma2" },
 129         { "Subset", "subset2" },
 130         { "Supset", "supset2" },
 131         { "Theta", "theta2" },
 132         { "Uparrow", "uparrow2" },
 133         { "Updownarrow", "updownarrow2" },
 134         { "Upsilon", "upsilon2" },
 135         { "Vdash", "vdash3" },
 136         { "Xi", "xi2" },
 137         { "nLeftarrow", "nleftarrow2" },
 138         { "nLeftrightarrow", "nleftrightarrow2" },
 139         { "nRightarrow", "nrightarrow2" },
 140         { "nVDash", "nvdash3" },
 141         { "nvDash", "nvdash2" },
 142         { "textrm \\AA", "textrm_AA"},
 143         { "textrm \\O", "textrm_O"},
 144         { "vDash", "vdash2" }
 145 };
 146
 147 size_t const nr_sorted_png_map = sizeof(sorted_png_map) / sizeof(PngMap);
 148
 149
 150 QString findPng(QString const & name)
 151 {
 152         PngMap const * const begin = sorted_png_map;
 153         PngMap const * const end = begin + nr_sorted_png_map;
 154         BOOST_ASSERT(sorted(begin, end));
 155
 156         PngMap const * const it = find_if(begin, end, CompareKey(name));
 157
 158         QString png_name;
 159         if (it != end) {
 160                 png_name = it->value;
 161         } else {
 162                 png_name = name;
 163                 png_name.replace('_', "underscore");
 164                 png_name.replace(' ', '_');
 165
 166                 // This way we can have "math-delim { }" on the toolbar.
 167                 png_name.replace('(', "lparen");
 168                 png_name.replace(')', "rparen");
 169                 png_name.replace('[', "lbracket");
 170                 png_name.replace(']', "rbracket");
 171                 png_name.replace('{', "lbrace");
 172                 png_name.replace('}', "rbrace");
 173                 png_name.replace('|', "bars");
 174                 png_name.replace(',', "thinspace");
 175                 png_name.replace(':', "mediumspace");
 176                 png_name.replace(';', "thickspace");
 177                 png_name.replace('!', "negthinspace");
 178         }
 179
 180         LYXERR(Debug::GUI, "findPng(" << fromqstr(name) << ")\n"
 181                 << "Looking for math PNG called \"" << fromqstr(png_name) << '"');
 182         return png_name;
 183 }
 184
 185 } // namespace anon
 186
 187
 188 /// return a icon for the given action
 189 static QIcon getIcon(FuncRequest const & f, bool unknown)
 190 {
 191         initializeResources();
 192         QPixmap pm;
 193         QString name1;
 194         QString name2;
 195         QString path;
 196         switch (f.action) {
 197         case LFUN_MATH_INSERT:
 198                 if (!f.argument().empty()) {
 199                         path = "math/";
 200                         name1 = findPng(toqstr(f.argument()).mid(1));
 201                 }
 202                 break;
 203         case LFUN_MATH_DELIM:
 204         case LFUN_MATH_BIGDELIM:
 205                 path = "math/";
 206                 name1 = findPng(toqstr(f.argument()));
 207                 break;
 208         case LFUN_CALL:
 209                 path = "commands/";
 210                 name1 = toqstr(f.argument());
 211                 break;
 212         default:
 213                 name2 = toqstr(lyxaction.getActionName(f.action));
 214                 name1 = name2;
 215
 216                 if (!f.argument().empty()) {
 217                         name1 = name2 + ' ' + toqstr(f.argument());
 218                         name1.replace(' ', '_');
 219                 }
 220         }
 221
 222         string fullname = libFileSearch("images/" + path, name1, "png").absFilename();
 223         if (pm.load(toqstr(fullname)))
 224                 return pm;
 225
 226         fullname = libFileSearch("images/" + path, name2, "png").absFilename();
 227         if (pm.load(toqstr(fullname)))
 228                 return pm;
 229
 230         if (pm.load(":/images/" + path + name1 + ".png"))
 231                 return pm;
 232
 233         if (pm.load(":/images/" + path + name2 + ".png"))
 234                 return pm;
 235
 236         LYXERR(Debug::GUI, "Cannot find icon for command \""
 237                            << lyxaction.getActionName(f.action)
 238                            << '(' << to_utf8(f.argument()) << ")\"");
 239         if (unknown)
 240                 pm.load(":/images/unknown.png");
 241
 242         return pm;
 243 }
 244
 245
 246 /////////////////////////////////////////////////////////////////////
 247 //
 248 // GuiLayoutBox
 249 //
 250 /////////////////////////////////////////////////////////////////////
 251
 252 class LayoutItemDelegate : public QAbstractItemDelegate {
 253 public:
 254         ///
 255         explicit LayoutItemDelegate(QObject * parent = 0)
 256                 : QAbstractItemDelegate(parent)
 257         {}
 258
 259         ///
 260         void paint(QPainter * painter, QStyleOptionViewItem const & option,
 261                 QModelIndex const & index) const
 262         {
 263                 QComboBox * combo = static_cast<QComboBox *>(parent());
 264                 QSortFilterProxyModel const * model
 265                 = static_cast<QSortFilterProxyModel const *>(index.model());
 266                 QStyleOptionMenuItem opt = getStyleOption(option, index);
 267
 268                 painter->eraseRect(opt.rect);
 269
 270                 QFontMetrics fm(opt.font);
 271                 QString text = underlineFilter(opt.text);
 272                 opt.text = QString();
 273
 274                 // category header?
 275                 if (lyxrc.group_layouts) {
 276                         QString stdCat = category(*model->sourceModel(), 0);
 277                         QString cat = category(*index.model(), index.row());
 278
 279                         // not the standard layout and not the same as in the previous line?
 280                         if (stdCat != cat
 281                             && (index.row() == 0 || cat != category(*index.model(), index.row() - 1))) {
 282                                 // draw category header
 283                                 paintBackground(painter, opt);
 284                                 paintCategoryHeader(painter, opt,
 285                                         category(*index.model(), index.row()));
 286
 287                                 opt.rect.setTop(opt.rect.top() + headerHeight(opt));
 288                                 opt.menuRect = opt.rect;
 289                         }
 290                 }
 291
 292                 // Draw using the menu item style (this is how QComboBox does it).
 293                 // But for the rich text drawing below we will call it with an
 294                 // empty string, and later then draw over it the real string.
 295                 painter->save();
 296                 combo->style()->drawControl(QStyle::CE_MenuItem, &opt, painter, combo->view());
 297                 painter->restore();
 298
 299                 // Draw the rich text.
 300                 painter->save();
 301                 QColor col = opt.palette.text().color();
 302                 if (opt.state & QStyle::State_Selected)
 303                         col = opt.palette.highlightedText().color();
 304                 QAbstractTextDocumentLayout::PaintContext context;
 305                 context.palette.setColor(QPalette::Text, col);
 306
 307                 QTextDocument doc;
 308                 doc.setDefaultFont(opt.font);
 309                 doc.setHtml(text);
 310
 311                 QTextFrameFormat fmt = doc.rootFrame()->frameFormat();
 312                 fmt.setMargin(0);
 313                 doc.rootFrame()->setFrameFormat(fmt);
 314
 315                 painter->translate(opt.rect.x() + 5,
 316                         opt.rect.y() + (opt.rect.height() - fm.height()) / 2);
 317                 doc.documentLayout()->draw(painter, context);
 318                 painter->restore();
 319         }
 320
 321         ///
 322         QSize sizeHint(QStyleOptionViewItem const & option,
 323                 QModelIndex const & index) const
 324         {
 325                 GuiLayoutBox * combo = static_cast<GuiLayoutBox *>(parent());
 326                 QSortFilterProxyModel const * model
 327                 = static_cast<QSortFilterProxyModel const *>(index.model());
 328                 QStyleOptionMenuItem opt = getStyleOption(option, index);
 329                 QSize size = combo->style()->sizeFromContents(
 330                          QStyle::CT_MenuItem, &opt, option.rect.size(), combo);
 331
 332                 /// QComboBox uses the first row height to estimate the
 333                 /// complete popup height during QComboBox::showPopup().
 334                 /// To avoid scrolling we have to sneak in space for the headers.
 335                 /// So we tweak this value accordingly. It's not nice, but the
 336                 /// only possible way it seems.
 337                 if (lyxrc.group_layouts && index.row() == 0 && combo->inShowPopup_) {
 338                         int itemHeight = size.height();
 339
 340                         // we have to show \c cats many headers:
 341                         unsigned cats = combo->visibleCategories_;
 342
 343                         // and we have \c n items to distribute the needed space over
 344                         unsigned n = combo->model()->rowCount();
 345
 346                         // so the needed average height (rounded upwards) is:
 347                         size.setHeight((headerHeight(opt) * cats + itemHeight * n + n - 1) / n);
 348                         return size;
 349                 }
 350
 351                 // Add space for the category headers here?
 352                 // Not for the standard layout though.
 353                 QString stdCat = category(*model->sourceModel(), 0);
 354                 QString cat = category(*index.model(), index.row());
 355                 if (lyxrc.group_layouts && stdCat != cat
 356                     && (index.row() == 0 || cat != category(*index.model(), index.row() - 1))) {
 357                         size.setHeight(size.height() + headerHeight(opt));
 358                 }
 359
 360                 return size;
 361         }
 362
 363 private:
 364         ///
 365         QString category(QAbstractItemModel const & model, int row) const
 366         {
 367                 return model.data(model.index(row, 2), Qt::DisplayRole).toString();
 368         }
 369
 370         ///
 371         void paintBackground(QPainter * painter, QStyleOptionMenuItem const & opt) const
 372         {
 373                 QComboBox * combo = static_cast<QComboBox *>(parent());
 374
 375                 // we only want to paint a background using the style, so
 376                 // disable every thing else
 377                 QStyleOptionMenuItem sopt = opt;
 378                 sopt.menuRect = sopt.rect;
 379                 sopt.state = QStyle::State_Active | QStyle::State_Enabled;
 380                 sopt.checked = false;
 381                 sopt.text = QString();
 382
 383                 painter->save();
 384                 combo->style()->drawControl(QStyle::CE_MenuItem, &sopt,
 385                         painter, combo->view());
 386                 painter->restore();
 387         }
 388
 389         ///
 390         int headerHeight(QStyleOptionMenuItem const & opt) const
 391         {
 392                 QFontMetrics fm(opt.font);
 393                 return fm.height() * 8 / 10;
 394         }
 395         ///
 396         void paintCategoryHeader(QPainter * painter, QStyleOptionMenuItem const & opt,
 397                 QString const & category) const
 398         {
 399                 painter->save();
 400
 401                 // slightly blended color
 402                 QColor lcol = opt.palette.text().color();
 403                 lcol.setAlpha(127);
 404                 painter->setPen(lcol);
 405
 406                 // set 80% scaled, bold font
 407                 QFont font = opt.font;
 408                 font.setBold(true);
 409                 font.setWeight(QFont::Black);
 410                 font.setPointSize(opt.font.pointSize() * 8 / 10);
 411                 painter->setFont(font);
 412
 413                 // draw the centered text
 414                 QFontMetrics fm(font);
 415                 int w = fm.width(category);
 416                 int x = opt.rect.x() + (opt.rect.width() - w) / 2;
 417                 int y = opt.rect.y() + fm.ascent();
 418                 int left = x;
 419                 int right = x + w;
 420                 painter->drawText(x, y, category);
 421
 422                 // the vertical position of the line: middle of lower case chars
 423                 int ymid = y - 1 - fm.xHeight() / 2; // -1 for the baseline
 424
 425                 // draw the horizontal line
 426                 if (!category.isEmpty()) {
 427                         painter->drawLine(opt.rect.x(), ymid, left - 1, ymid);
 428                         painter->drawLine(right + 1, ymid, opt.rect.right(), ymid);
 429                 } else
 430                         painter->drawLine(opt.rect.x(), ymid, opt.rect.right(), ymid);
 431
 432                 painter->restore();
 433         }
 434
 435
 436         ///
 437         QString underlineFilter(QString const & s) const
 438         {
 439                 // get filter
 440                 GuiLayoutBox * p = static_cast<GuiLayoutBox *>(parent());
 441                 QString const & f = p->filter();
 442                 if (f.isEmpty())
 443                         return s;
 444
 445                 // step through data item and put "(x)" for every matching character
 446                 QString r;
 447                 int lastp = -1;
 448                 p->filter();
 449                 for (int i = 0; i < f.length(); ++i) {
 450                         int p = s.indexOf(f[i], lastp + 1, Qt::CaseInsensitive);
 451                         BOOST_ASSERT(p != -1);
 452                         if (lastp == p - 1 && lastp != -1) {
 453                                 // remove ")" and append "x)"
 454                                 r = r.left(r.length() - 4) + s[p] + "</u>";
 455                         } else {
 456                                 // append "(x)"
 457                                 r += s.mid(lastp + 1, p - lastp - 1);
 458                                 r += QString("<u>") + s[p] + "</u>";
 459                         }
 460                         lastp = p;
 461                 }
 462                 r += s.mid(lastp + 1);
 463                 return r;
 464         }
 465
 466         ///
 467         QStyleOptionMenuItem getStyleOption(QStyleOptionViewItem const & option,
 468                 QModelIndex const & index) const
 469         {
 470                 QComboBox * combo = static_cast<QComboBox *>(parent());
 471
 472                 // create the options for a menu item
 473                 QStyleOptionMenuItem menuOption;
 474                 menuOption.palette = QApplication::palette("QMenu");
 475                 menuOption.state = QStyle::State_Active | QStyle::State_Enabled;
 476                 menuOption.menuRect = option.rect;
 477                 menuOption.rect = option.rect;
 478                 menuOption.font = combo->font();
 479                 menuOption.fontMetrics = QFontMetrics(menuOption.font);
 480                 menuOption.tabWidth = 0;
 481                 menuOption.text = index.model()->data(index, Qt::DisplayRole).toString()
 482                         .replace(QLatin1Char('&'), QLatin1String("&&"));
 483                 menuOption.menuItemType = QStyleOptionMenuItem::Normal;
 484                 if (option.state & QStyle::State_Selected)
 485                         menuOption.state |= QStyle::State_Selected;
 486                 menuOption.checkType = QStyleOptionMenuItem::NotCheckable;
 487                 menuOption.checked = false;
 488                 return menuOption;
 489         }
 490 };
 491
 492
 493 class GuiLayoutFilterModel : public QSortFilterProxyModel {
 494 public:
 495         ///
 496         GuiLayoutFilterModel(QObject * parent = 0)
 497                 : QSortFilterProxyModel(parent)
 498         {}
 499
 500         ///
 501         void triggerLayoutChange()
 502         {
 503                 layoutAboutToBeChanged();
 504                 layoutChanged();
 505         }
 506 };
 507
 508
 509 GuiLayoutBox::GuiLayoutBox(GuiView & owner)
 510         : owner_(owner), lastSel_(-1), layoutItemDelegate_(new LayoutItemDelegate(this)),
 511           visibleCategories_(0), inShowPopup_(false)
 512 {
 513         setSizeAdjustPolicy(QComboBox::AdjustToContents);
 514         setFocusPolicy(Qt::ClickFocus);
 515         setMinimumWidth(sizeHint().width());
 516         setMaxVisibleItems(100);
 517
 518         // set the layout model with two columns
 519         // 1st: translated layout names
 520         // 2nd: raw layout names
 521         model_ = new QStandardItemModel(0, 2, this);
 522         filterModel_ = new GuiLayoutFilterModel(this);
 523         filterModel_->setSourceModel(model_);
 524         setModel(filterModel_);
 525
 526         // for the filtering we have to intercept characters
 527         view()->installEventFilter(this);
 528         view()->setItemDelegateForColumn(0, layoutItemDelegate_);
 529
 530         QObject::connect(this, SIGNAL(activated(int)),
 531                          this, SLOT(selected(int)));
 532         owner_.setLayoutDialog(this);
 533         updateContents(true);
 534 }
 535
 536
 537 void GuiLayoutBox::setFilter(QString const & s)
 538 {
 539         if (!s.isEmpty())
 540                 owner_.message(_("Filtering layouts with \"" + fromqstr(s) + "\". "
 541                         "Press ESC to remove filter."));
 542         else
 543                 owner_.message(_("Enter characters to filter the layout list."));
 544
 545         bool enabled = view()->updatesEnabled();
 546         view()->setUpdatesEnabled(false);
 547
 548         // remember old selection
 549         int sel = currentIndex();
 550         if (sel != -1)
 551                 lastSel_ = filterModel_->mapToSource(filterModel_->index(sel, 0)).row();
 552
 553         filter_ = s;
 554         filterModel_->setFilterRegExp(charFilterRegExp(filter_));
 555         countCategories();
 556
 557         // restore old selection
 558         if (lastSel_ != -1) {
 559                 QModelIndex i = filterModel_->mapFromSource(model_->index(lastSel_, 0));
 560                 if (i.isValid())
 561                         setCurrentIndex(i.row());
 562         }
 563
 564         // Workaround to resize to content size
 565         // FIXME: There must be a better way. The QComboBox::AdjustToContents)
 566         //        does not help.
 567         if (view()->isVisible()) {
 568                 // call QComboBox::showPopup. But set the inShowPopup_ flag to switch on
 569                 // the hack in the item delegate to make space for the headers.
 570                 // We do not call our implementation of showPopup because that
 571                 // would reset the filter again. This is only needed if the user clicks
 572                 // on the QComboBox.
 573                 BOOST_ASSERT(!inShowPopup_);
 574                 inShowPopup_ = true;
 575                 QComboBox::showPopup();
 576                 inShowPopup_ = false;
 577
 578                 // The item delegate hack is off again. So trigger a relayout of the popup.
 579                 filterModel_->triggerLayoutChange();
 580         }
 581
 582         view()->setUpdatesEnabled(enabled);
 583 }
 584
 585
 586 void GuiLayoutBox::countCategories()
 587 {
 588         int n = filterModel_->rowCount();
 589         visibleCategories_ = 0;
 590         if (n == 0 || !lyxrc.group_layouts)
 591                 return;
 592
 593         // skip the "Standard" category
 594         QString prevCat = model_->index(0, 2).data().toString();
 595
 596         // count categories
 597         for (int i = 0; i < n; ++i) {
 598                 QString cat = filterModel_->index(i, 2).data().toString();
 599                 if (cat != prevCat)
 600                         ++visibleCategories_;
 601                 prevCat = cat;
 602         }
 603 }
 604
 605
 606 QString GuiLayoutBox::charFilterRegExp(QString const & filter)
 607 {
 608         QString re;
 609         for (int i = 0; i < filter.length(); ++i) {
 610                 QChar c = filter[i];
 611                 if (c.isLower())
 612                         re += ".*[" + QRegExp::escape(c) + QRegExp::escape(c.toUpper()) + "]";
 613                 else
 614                         re += ".*" + QRegExp::escape(c);
 615         }
 616         return re;
 617 }
 618
 619
 620 void GuiLayoutBox::resetFilter()
 621 {
 622         setFilter(QString());
 623 }
 624
 625
 626 void GuiLayoutBox::showPopup()
 627 {
 628         owner_.message(_("Enter characters to filter the layout list."));
 629
 630         bool enabled = view()->updatesEnabled();
 631         view()->setUpdatesEnabled(false);
 632
 633         resetFilter();
 634
 635         // call QComboBox::showPopup. But set the inShowPopup_ flag to switch on
 636         // the hack in the item delegate to make space for the headers.
 637         BOOST_ASSERT(!inShowPopup_);
 638         inShowPopup_ = true;
 639         QComboBox::showPopup();
 640         inShowPopup_ = false;
 641
 642         // The item delegate hack is off again. So trigger a relayout of the popup.
 643         filterModel_->triggerLayoutChange();
 644
 645         view()->setUpdatesEnabled(enabled);
 646 }
 647
 648
 649 bool GuiLayoutBox::eventFilter(QObject * o, QEvent * e)
 650 {
 651         if (e->type() != QEvent::KeyPress)
 652                 return QComboBox::eventFilter(o, e);
 653
 654         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 655         bool modified = (ke->modifiers() == Qt::ControlModifier)
 656                 || (ke->modifiers() == Qt::AltModifier)
 657                 || (ke->modifiers() == Qt::MetaModifier);
 658
 659         switch (ke->key()) {
 660         case Qt::Key_Escape:
 661                 if (!modified && !filter_.isEmpty()) {
 662                         resetFilter();
 663                         return true;
 664                 }
 665                 break;
 666         case Qt::Key_Backspace:
 667                 if (!modified) {
 668                         // cut off one character
 669                         setFilter(filter_.left(filter_.length() - 1));
 670                 }
 671                 break;
 672         default:
 673                 if (modified || ke->text().isEmpty())
 674                         break;
 675                 // find chars for the filter string
 676                 QString s;
 677                 for (int i = 0; i < ke->text().length(); ++i) {
 678                         QChar c = ke->text()[i];
 679                         if (c.isLetterOrNumber()
 680                             || c.isSymbol()
 681                             || c.isPunct()
 682                             || c.category() == QChar::Separator_Space) {
 683                                 s += c;
 684                         }
 685                 }
 686                 if (!s.isEmpty()) {
 687                         // append new chars to the filter string
 688                         setFilter(filter_ + s);
 689                         return true;
 690                 }
 691                 break;
 692         }
 693
 694         return QComboBox::eventFilter(o, e);
 695 }
 696
 697
 698 void GuiLayoutBox::set(docstring const & layout)
 699 {
 700         resetFilter();
 701
 702         if (!text_class_)
 703                 return;
 704
 705         QString const & name = toqstr((*text_class_)[layout].name());
 706         if (name == currentText())
 707                 return;
 708
 709         QList<QStandardItem *> r = model_->findItems(name, Qt::MatchExactly, 1);
 710         if (r.empty()) {
 711                 lyxerr << "Trying to select non existent layout type "
 712                         << fromqstr(name) << endl;
 713                 return;
 714         }
 715
 716         setCurrentIndex(filterModel_->mapFromSource(r.first()->index()).row());
 717 }
 718
 719
 720 void GuiLayoutBox::addItemSort(docstring const & item, docstring const & category,
 721         bool sorted, bool sortedByCat)
 722 {
 723         QString qitem = toqstr(item);
 724         QString titem = toqstr(translateIfPossible(item));
 725         QString qcat = toqstr(translateIfPossible(category));
 726
 727         QList<QStandardItem *> row;
 728         row.append(new QStandardItem(titem));
 729         row.append(new QStandardItem(qitem));
 730         row.append(new QStandardItem(qcat));
 731
 732         // the first entry is easy
 733         int const end = model_->rowCount();
 734         if (end == 0) {
 735                 model_->appendRow(row);
 736                 return;
 737         }
 738
 739         // find category
 740         int i = 0;
 741         if (sortedByCat) {
 742                 while (i < end && model_->item(i, 2)->text() != qcat)
 743                         ++i;
 744         }
 745
 746         // skip the Standard layout
 747         if (i == 0)
 748                 ++i;
 749
 750         // the simple unsorted case
 751         if (!sorted) {
 752                 if (sortedByCat) {
 753                         // jump to the end of the category group
 754                         while (i < end && model_->item(i, 2)->text() == qcat)
 755                                 ++i;
 756                         model_->insertRow(i, row);
 757                 } else
 758                         model_->appendRow(row);
 759                 return;
 760         }
 761
 762         // find row to insert the item, after the separator if it exists
 763         if (i < end) {
 764                 // find alphabetic position
 765                 while (i != end
 766                        && model_->item(i, 0)->text().compare(titem) < 0
 767                        && (!sortedByCat || model_->item(i, 2)->text() == qcat))
 768                         ++i;
 769         }
 770
 771         model_->insertRow(i, row);
 772 }
 773
 774
 775 void GuiLayoutBox::updateContents(bool reset)
 776 {
 777         resetFilter();
 778
 779         Buffer const * buffer = owner_.buffer();
 780         if (!buffer) {
 781                 model_->clear();
 782                 setEnabled(false);
 783                 text_class_ = 0;
 784                 inset_ = 0;
 785                 return;
 786         }
 787
 788         // we'll only update the layout list if the text class has changed
 789         // or we've moved from one inset to another
 790         DocumentClass const * text_class = &buffer->params().documentClass();
 791         Inset const * inset =
 792         owner_.view()->cursor().innerParagraph().inInset();
 793         if (!reset && text_class_ == text_class && inset_ == inset) {
 794                 set(owner_.view()->cursor().innerParagraph().layout().name());
 795                 return;
 796         }
 797
 798         inset_ = inset;
 799         text_class_ = text_class;
 800
 801         model_->clear();
 802         DocumentClass::const_iterator lit = text_class_->begin();
 803         DocumentClass::const_iterator len = text_class_->end();
 804         for (; lit != len; ++lit) {
 805                 docstring const & name = lit->name();
 806                 // if this inset requires the empty layout, we skip the default
 807                 // layout
 808                 if (name == text_class_->defaultLayoutName() && inset &&
 809                     (inset->forceEmptyLayout() || inset->useEmptyLayout()))
 810                         continue;
 811                 // if it doesn't require the empty layout, we skip it
 812                 if (name == text_class_->emptyLayoutName() && inset &&
 813                     !inset->forceEmptyLayout() && !inset->useEmptyLayout())
 814                         continue;
 815                 addItemSort(name, lit->category(), lyxrc.sort_layouts, lyxrc.group_layouts);
 816         }
 817
 818         set(owner_.view()->cursor().innerParagraph().layout().name());
 819         countCategories();
 820
 821         // needed to recalculate size hint
 822         hide();
 823         setMinimumWidth(sizeHint().width());
 824         setEnabled(!buffer->isReadonly());
 825         show();
 826 }
 827
 828
 829 void GuiLayoutBox::selected(int index)
 830 {
 831         // get selection
 832         QModelIndex mindex = filterModel_->mapToSource(filterModel_->index(index, 1));
 833         docstring const layoutName =
 834                 qstring_to_ucs4(model_->itemFromIndex(mindex)->text());
 835
 836         owner_.setFocus();
 837
 838         if (!text_class_) {
 839                 updateContents(false);
 840                 resetFilter();
 841                 return;
 842         }
 843
 844         // find corresponding text class
 845         if (text_class_->hasLayout(layoutName)) {
 846                 FuncRequest const func(LFUN_LAYOUT, layoutName, FuncRequest::TOOLBAR);
 847                 theLyXFunc().setLyXView(&owner_);
 848                 lyx::dispatch(func);
 849                 updateContents(false);
 850                 resetFilter();
 851                 return;
 852         }
 853         lyxerr << "ERROR (layoutSelected): layout not found!" << endl;
 854 }
 855
 856
 857
 858 /////////////////////////////////////////////////////////////////////
 859 //
 860 // GuiToolbar
 861 //
 862 /////////////////////////////////////////////////////////////////////
 863
 864
 865 GuiToolbar::GuiToolbar(ToolbarInfo const & tbinfo, GuiView & owner)
 866         : QToolBar(qt_(tbinfo.gui_name), &owner), owner_(owner),
 867           layout_(0), command_buffer_(0)
 868 {
 869         // give visual separation between adjacent toolbars
 870         addSeparator();
 871
 872         // TODO: save toolbar position
 873         setMovable(true);
 874
 875         ToolbarInfo::item_iterator it = tbinfo.items.begin();
 876         ToolbarInfo::item_iterator end = tbinfo.items.end();
 877         for (; it != end; ++it)
 878                 add(*it);
 879 }
 880
 881
 882 Action * GuiToolbar::addItem(ToolbarItem const & item)
 883 {
 884         Action * act = new Action(owner_,
 885                 getIcon(item.func_, false),
 886           toqstr(item.label_), item.func_, toqstr(item.label_));
 887         actions_.append(act);
 888         return act;
 889 }
 890
 891 namespace {
 892
 893 class PaletteButton : public QToolButton
 894 {
 895 private:
 896         GuiToolbar * bar_;
 897         ToolbarItem const & tbitem_;
 898         bool initialized_;
 899 public:
 900         PaletteButton(GuiToolbar * bar, ToolbarItem const & item)
 901                 : QToolButton(bar), bar_(bar), tbitem_(item), initialized_(false)
 902         {
 903                 QString const label = qt_(to_ascii(tbitem_.label_));
 904                 setToolTip(label);
 905                 setStatusTip(label);
 906                 setText(label);
 907                 connect(bar_, SIGNAL(iconSizeChanged(QSize)),
 908                         this, SLOT(setIconSize(QSize)));
 909                 setCheckable(true);
 910                 ToolbarInfo const * tbinfo =
 911                         toolbarbackend.getDefinedToolbarInfo(tbitem_.name_);
 912                 if (tbinfo)
 913                         // use the icon of first action for the toolbar button
 914                         setIcon(getIcon(tbinfo->items.begin()->func_, true));
 915         }
 916
 917         void mousePressEvent(QMouseEvent * e)
 918         {
 919                 if (initialized_) {
 920                         QToolButton::mousePressEvent(e);
 921                         return;
 922                 }
 923
 924                 initialized_ = true;
 925
 926                 ToolbarInfo const * tbinfo =
 927                         toolbarbackend.getDefinedToolbarInfo(tbitem_.name_);
 928                 if (!tbinfo) {
 929                         lyxerr << "Unknown toolbar " << tbitem_.name_ << endl;
 930                         return;
 931                 }
 932                 IconPalette * panel = new IconPalette(this);
 933                 QString const label = qt_(to_ascii(tbitem_.label_));
 934                 panel->setWindowTitle(label);
 935                 connect(this, SIGNAL(clicked(bool)), panel, SLOT(setVisible(bool)));
 936                 connect(panel, SIGNAL(visible(bool)), this, SLOT(setChecked(bool)));
 937                 ToolbarInfo::item_iterator it = tbinfo->items.begin();
 938                 ToolbarInfo::item_iterator const end = tbinfo->items.end();
 939                 for (; it != end; ++it)
 940                         if (!getStatus(it->func_).unknown())
 941                                 panel->addButton(bar_->addItem(*it));
 942
 943                 QToolButton::mousePressEvent(e);
 944         }
 945 };
 946
 947 class MenuButton : public QToolButton
 948 {
 949 private:
 950         GuiToolbar * bar_;
 951         ToolbarItem const & tbitem_;
 952         bool initialized_;
 953 public:
 954         MenuButton(GuiToolbar * bar, ToolbarItem const & item)
 955                 : QToolButton(bar), bar_(bar), tbitem_(item), initialized_(false)
 956         {
 957                 setPopupMode(QToolButton::InstantPopup);
 958                 QString const label = qt_(to_ascii(tbitem_.label_));
 959                 setToolTip(label);
 960                 setStatusTip(label);
 961                 setText(label);
 962                 setIcon(QPixmap(":images/math/" + toqstr(tbitem_.name_) + ".png"));
 963                 connect(bar, SIGNAL(iconSizeChanged(QSize)),
 964                         this, SLOT(setIconSize(QSize)));
 965         }
 966
 967         void mousePressEvent(QMouseEvent * e)
 968         {
 969                 if (initialized_) {
 970                         QToolButton::mousePressEvent(e);
 971                         return;
 972                 }
 973
 974                 initialized_ = true;
 975
 976                 QString const label = qt_(to_ascii(tbitem_.label_));
 977                 ButtonMenu * m = new ButtonMenu(label, this);
 978                 m->setWindowTitle(label);
 979                 m->setTearOffEnabled(true);
 980                 connect(bar_, SIGNAL(updated()), m, SLOT(updateParent()));
 981                 ToolbarInfo const * tbinfo =
 982                         toolbarbackend.getDefinedToolbarInfo(tbitem_.name_);
 983                 if (!tbinfo) {
 984                         lyxerr << "Unknown toolbar " << tbitem_.name_ << endl;
 985                         return;
 986                 }
 987                 ToolbarInfo::item_iterator it = tbinfo->items.begin();
 988                 ToolbarInfo::item_iterator const end = tbinfo->items.end();
 989                 for (; it != end; ++it)
 990                         if (!getStatus(it->func_).unknown())
 991                                 m->add(bar_->addItem(*it));
 992                 setMenu(m);
 993
 994                 QToolButton::mousePressEvent(e);
 995         }
 996 };
 997
 998 }
 999
1000
1001 void GuiToolbar::add(ToolbarItem const & item)
1002 {
1003         switch (item.type_) {
1004         case ToolbarItem::SEPARATOR:
1005                 addSeparator();
1006                 break;
1007         case ToolbarItem::LAYOUTS:
1008                 layout_ = new GuiLayoutBox(owner_);
1009                 addWidget(layout_);
1010                 break;
1011         case ToolbarItem::MINIBUFFER:
1012                 command_buffer_ = new GuiCommandBuffer(&owner_);
1013                 addWidget(command_buffer_);
1014                 /// \todo find a Qt4 equivalent to setHorizontalStretchable(true);
1015                 //setHorizontalStretchable(true);
1016                 break;
1017         case ToolbarItem::TABLEINSERT: {
1018                 QToolButton * tb = new QToolButton;
1019                 tb->setCheckable(true);
1020                 tb->setIcon(getIcon(FuncRequest(LFUN_TABULAR_INSERT), true));
1021                 QString const label = qt_(to_ascii(item.label_));
1022                 tb->setToolTip(label);
1023                 tb->setStatusTip(label);
1024                 tb->setText(label);
1025                 InsertTableWidget * iv = new InsertTableWidget(owner_, tb);
1026                 connect(tb, SIGNAL(clicked(bool)), iv, SLOT(show(bool)));
1027                 connect(iv, SIGNAL(visible(bool)), tb, SLOT(setChecked(bool)));
1028                 connect(this, SIGNAL(updated()), iv, SLOT(updateParent()));
1029                 addWidget(tb);
1030                 break;
1031                 }
1032         case ToolbarItem::ICONPALETTE:
1033                 addWidget(new PaletteButton(this, item));
1034                 break;
1035
1036         case ToolbarItem::POPUPMENU: {
1037                 addWidget(new MenuButton(this, item));
1038                 break;
1039                 }
1040         case ToolbarItem::COMMAND: {
1041                 if (!getStatus(item.func_).unknown())
1042                         addAction(addItem(item));
1043                 break;
1044                 }
1045         default:
1046                 break;
1047         }
1048 }
1049
1050
1051 void GuiToolbar::saveInfo(ToolbarSection::ToolbarInfo & tbinfo)
1052 {
1053         // if tbinfo.state == auto *do not* set on/off
1054         if (tbinfo.state != ToolbarSection::ToolbarInfo::AUTO) {
1055                 if (GuiToolbar::isVisible())
1056                         tbinfo.state = ToolbarSection::ToolbarInfo::ON;
1057                 else
1058                         tbinfo.state = ToolbarSection::ToolbarInfo::OFF;
1059         }
1060         //
1061         // no need to save it here.
1062         Qt::ToolBarArea loc = owner_.toolBarArea(this);
1063
1064         if (loc == Qt::TopToolBarArea)
1065                 tbinfo.location = ToolbarSection::ToolbarInfo::TOP;
1066         else if (loc == Qt::BottomToolBarArea)
1067                 tbinfo.location = ToolbarSection::ToolbarInfo::BOTTOM;
1068         else if (loc == Qt::RightToolBarArea)
1069                 tbinfo.location = ToolbarSection::ToolbarInfo::RIGHT;
1070         else if (loc == Qt::LeftToolBarArea)
1071                 tbinfo.location = ToolbarSection::ToolbarInfo::LEFT;
1072         else
1073                 tbinfo.location = ToolbarSection::ToolbarInfo::NOTSET;
1074
1075         // save toolbar position. They are not used to restore toolbar position
1076         // now because move(x,y) does not work for toolbar.
1077         tbinfo.posx = pos().x();
1078         tbinfo.posy = pos().y();
1079 }
1080
1081
1082 void GuiToolbar::updateContents()
1083 {
1084         // update visible toolbars only
1085         if (!isVisible())
1086                 return;
1087         // This is a speed bottleneck because this is called on every keypress
1088         // and update calls getStatus, which copies the cursor at least two times
1089         for (int i = 0; i < actions_.size(); ++i)
1090                 actions_[i]->update();
1091
1092         if (layout_)
1093                 layout_->setEnabled(lyx::getStatus(FuncRequest(LFUN_LAYOUT)).enabled());
1094
1095         // emit signal
1096         updated();
1097 }
1098
1099
1100 } // namespace frontend
1101 } // namespace lyx
1102
1103 #include "GuiToolbar_moc.cpp"