src/frontends/qt4/GuiView.cpp

   1 /**
   2  * \file GuiView.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 Abdelrazak Younes
   9  * \author Peter Kümmel
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "GuiView.h"
  17
  18 #include "GuiImplementation.h"
  19 #include "GuiWorkArea.h"
  20 #include "GuiKeySymbol.h"
  21 #include "GuiMenubar.h"
  22 #include "GuiToolbar.h"
  23 #include "qt_helpers.h"
  24
  25 #include "frontends/Application.h"
  26 #include "frontends/Dialogs.h"
  27 #include "frontends/Gui.h"
  28 #include "frontends/WorkArea.h"
  29
  30 #include "support/filetools.h"
  31 #include "support/convert.h"
  32 #include "support/lstrings.h"
  33 #include "support/os.h"
  34
  35 #include "Buffer.h"
  36 #include "BufferView.h"
  37 #include "BufferList.h"
  38 #include "callback.h"
  39 #include "debug.h"
  40 #include "FuncRequest.h"
  41 #include "LyX.h"
  42 #include "LyXFunc.h"
  43 #include "LyXRC.h"
  44 #include "MenuBackend.h"
  45 #include "Session.h"
  46 #include "version.h"
  47
  48 #include <QAction>
  49 #include <QApplication>
  50 #include <QCloseEvent>
  51 #include <QDesktopWidget>
  52 #include <QDragEnterEvent>
  53 #include <QDropEvent>
  54 #include <QList>
  55 #include <QMimeData>
  56 #include <QPainter>
  57 #include <QPixmap>
  58 #include <QPushButton>
  59 #include <QStackedWidget>
  60 #include <QStatusBar>
  61 #include <QTabBar>
  62 #include <QToolBar>
  63 #include <QTabWidget>
  64 #include <QUrl>
  65
  66 #include <boost/shared_ptr.hpp>
  67
  68 using std::endl;
  69 using std::string;
  70 using std::vector;
  71
  72 namespace lyx {
  73
  74 using support::FileName;
  75 using support::libFileSearch;
  76 using support::makeDisplayPath;
  77
  78 namespace frontend {
  79
  80 namespace {
  81
  82 int const statusbar_timer_value = 3000;
  83
  84 class BackgroundWidget : public QWidget
  85 {
  86 public:
  87         BackgroundWidget(QString const & file, QString const & text)
  88         {
  89                 splash_ = new QPixmap(file);
  90                 if (!splash_) {
  91                         lyxerr << "could not load splash screen: '" << fromqstr(file) << "'" << endl;
  92                         return;
  93                 }
  94
  95                 QPainter pain(splash_);
  96                 pain.setPen(QColor(255, 255, 0));
  97                 QFont font;
  98                 // The font used to display the version info
  99                 font.setStyleHint(QFont::SansSerif);
 100                 font.setWeight(QFont::Bold);
 101                 font.setPointSize(convert<int>(lyxrc.font_sizes[Font::SIZE_LARGE]));
 102                 pain.setFont(font);
 103                 pain.drawText(260, 270, text);
 104         }
 105
 106         void paintEvent(QPaintEvent *)
 107         {
 108                 if (!splash_)
 109                         return;
 110
 111                 int x = (width() - splash_->width()) / 2;
 112                 int y = (height() - splash_->height()) / 2;
 113                 QPainter pain(this);
 114                 pain.drawPixmap(x, y, *splash_);
 115         }
 116
 117 private:
 118         QPixmap * splash_;
 119 };
 120
 121
 122 class TabWidget : public QTabWidget {
 123 public:
 124         void showBar(bool show) { tabBar()->setVisible(show); }
 125 };
 126
 127
 128 } // namespace anon
 129
 130
 131 struct GuiViewBase::GuiViewPrivate
 132 {
 133         string cur_title;
 134
 135         int posx_offset;
 136         int posy_offset;
 137
 138         TabWidget * tab_widget_;
 139         QStackedWidget * stack_widget_;
 140         BackgroundWidget * bg_widget_;
 141         /// view's menubar
 142         GuiMenubar * menubar_;
 143
 144         GuiViewPrivate() : posx_offset(0), posy_offset(0) {}
 145
 146         unsigned int smallIconSize;
 147         unsigned int normalIconSize;
 148         unsigned int bigIconSize;
 149         // static needed by "New Window"
 150         static unsigned int lastIconSize;
 151
 152         QMenu * toolBarPopup(GuiViewBase * parent)
 153         {
 154                 // FIXME: translation
 155                 QMenu * menu = new QMenu(parent);
 156                 QActionGroup * iconSizeGroup = new QActionGroup(parent);
 157
 158                 QAction * smallIcons = new QAction(iconSizeGroup);
 159                 smallIcons->setText(qt_("Small-sized icons"));
 160                 smallIcons->setCheckable(true);
 161                 QObject::connect(smallIcons, SIGNAL(triggered()), parent, SLOT(smallSizedIcons()));
 162                 menu->addAction(smallIcons);
 163
 164                 QAction * normalIcons = new QAction(iconSizeGroup);
 165                 normalIcons->setText(qt_("Normal-sized icons"));
 166                 normalIcons->setCheckable(true);
 167                 QObject::connect(normalIcons, SIGNAL(triggered()), parent, SLOT(normalSizedIcons()));
 168                 menu->addAction(normalIcons);
 169
 170                 QAction * bigIcons = new QAction(iconSizeGroup);
 171                 bigIcons->setText(qt_("Big-sized icons"));
 172                 bigIcons->setCheckable(true);
 173                 QObject::connect(bigIcons, SIGNAL(triggered()), parent, SLOT(bigSizedIcons()));
 174                 menu->addAction(bigIcons);
 175
 176                 unsigned int cur = parent->iconSize().width();
 177                 if ( cur == parent->d.smallIconSize)
 178                         smallIcons->setChecked(true);
 179                 else if (cur == parent->d.normalIconSize)
 180                         normalIcons->setChecked(true);
 181                 else if (cur == parent->d.bigIconSize)
 182                         bigIcons->setChecked(true);
 183
 184                 return menu;
 185         }
 186
 187         void initBackground()
 188         {
 189                 bg_widget_ = 0;
 190                 LYXERR(Debug::GUI) << "show banner: " << lyxrc.show_banner << endl;
 191                 /// The text to be written on top of the pixmap
 192                 QString const text = lyx_version ? QString(lyx_version) : qt_("unknown version");
 193                 FileName const file = support::libFileSearch("images", "banner", "png");
 194                 if (file.empty())
 195                         return;
 196
 197                 bg_widget_ = new BackgroundWidget(toqstr(file.absFilename()), text);
 198         }
 199
 200         void setBackground()
 201         {
 202                 if (!bg_widget_)
 203                         return;
 204
 205                 stack_widget_->setCurrentWidget(bg_widget_);
 206                 bg_widget_->setUpdatesEnabled(true);
 207         }
 208 };
 209
 210
 211 unsigned int GuiViewBase::GuiViewPrivate::lastIconSize = 0;
 212
 213
 214 GuiViewBase::GuiViewBase(int id)
 215         : QMainWindow(), LyXView(id), quitting_by_menu_(false),
 216           d(*new GuiViewPrivate)
 217 {
 218         // Qt bug? signal lastWindowClosed does not work
 219         setAttribute(Qt::WA_QuitOnClose, false);
 220         setAttribute(Qt::WA_DeleteOnClose, true);
 221
 222         // hardcode here the platform specific icon size
 223         d.smallIconSize = 14;   // scaling problems
 224         d.normalIconSize = 20;  // ok, default
 225         d.bigIconSize = 26;             // better for some math icons
 226
 227 #ifndef Q_WS_MACX
 228         // assign an icon to main form. We do not do it under Qt/Mac,
 229         // since the icon is provided in the application bundle.
 230         FileName const iconname = libFileSearch("images", "lyx", "png");
 231         if (!iconname.empty())
 232                 setWindowIcon(QPixmap(toqstr(iconname.absFilename())));
 233 #endif
 234
 235         d.tab_widget_ = new TabWidget;
 236
 237         QPushButton * closeTabButton = new QPushButton(this);
 238         FileName const file = support::libFileSearch("images", "closetab", "png");
 239         if (!file.empty()) {
 240                 QPixmap pm(toqstr(file.absFilename()));
 241                 closeTabButton->setIcon(QIcon(pm));
 242                 closeTabButton->setMaximumSize(pm.size());
 243                 closeTabButton->setFlat(true);
 244         } else {
 245                 closeTabButton->setText("Close");
 246         }
 247         closeTabButton->setCursor(Qt::ArrowCursor);
 248         closeTabButton->setToolTip(tr("Close tab"));
 249         closeTabButton->setEnabled(true);
 250
 251         QObject::connect(d.tab_widget_, SIGNAL(currentChanged(int)),
 252                         this, SLOT(currentTabChanged(int)));
 253         QObject::connect(closeTabButton, SIGNAL(clicked()),
 254                         this, SLOT(closeCurrentTab()));
 255
 256         d.tab_widget_->setCornerWidget(closeTabButton);
 257 #if QT_VERSION >= 0x040200
 258         d.tab_widget_->setUsesScrollButtons(true);
 259 #endif
 260
 261         d.initBackground();
 262         if (d.bg_widget_) {
 263                 LYXERR(Debug::GUI) << "stack widget!" << endl;
 264                 d.stack_widget_ = new QStackedWidget;
 265                 d.stack_widget_->addWidget(d.bg_widget_);
 266                 d.stack_widget_->addWidget(d.tab_widget_);
 267                 setCentralWidget(d.stack_widget_);
 268         } else {
 269                 d.stack_widget_ = 0;
 270                 setCentralWidget(d.tab_widget_);
 271         }
 272
 273         // For Drag&Drop.
 274         setAcceptDrops(true);
 275 }
 276
 277
 278 GuiViewBase::~GuiViewBase()
 279 {
 280         delete d.menubar_;
 281         delete &d;
 282 }
 283
 284
 285 void GuiViewBase::close()
 286 {
 287         quitting_by_menu_ = true;
 288         QMainWindow::close();
 289         quitting_by_menu_ = false;
 290 }
 291
 292
 293 void GuiViewBase::setFocus()
 294 {
 295         if (d.tab_widget_->count())
 296                 d.tab_widget_->currentWidget()->setFocus();
 297 }
 298
 299
 300 QMenu* GuiViewBase::createPopupMenu()
 301 {
 302         return d.toolBarPopup(this);
 303 }
 304
 305
 306 void GuiViewBase::init()
 307 {
 308         d.menubar_ = new GuiMenubar(this, menubackend);
 309
 310         toolbars_->init();
 311
 312         statusBar()->setSizeGripEnabled(true);
 313
 314         QObject::connect(&statusbar_timer_, SIGNAL(timeout()),
 315                 this, SLOT(update_view_state_qt()));
 316
 317         if (d.stack_widget_)
 318                 d.stack_widget_->setCurrentWidget(d.bg_widget_);
 319 }
 320
 321
 322 void GuiViewBase::closeEvent(QCloseEvent * close_event)
 323 {
 324         // we may have been called through the close window button
 325         // which bypasses the LFUN machinery.
 326         if (!quitting_by_menu_ && theApp()->gui().viewIds().size() == 1) {
 327                 if (!theBufferList().quitWriteAll()) {
 328                         close_event->ignore();
 329                         return;
 330                 }
 331         }
 332
 333         // Make sure that no LFUN use this close to be closed View.
 334         theLyXFunc().setLyXView(0);
 335         // Make sure the timer time out will not trigger a statusbar update.
 336         statusbar_timer_.stop();
 337
 338         theApp()->gui().unregisterView(id());
 339         if (!theApp()->gui().viewIds().empty()) {
 340                 // Just close the window and do nothing else if this is not the
 341                 // last window.
 342                 close_event->accept();
 343                 return;
 344         }
 345
 346         quitting = true;
 347
 348         // this is the place where we leave the frontend.
 349         // it is the only point at which we start quitting.
 350         saveGeometry();
 351         close_event->accept();
 352         // quit the event loop
 353         qApp->quit();
 354 }
 355
 356
 357 void GuiViewBase::dragEnterEvent(QDragEnterEvent * event)
 358 {
 359         if (event->mimeData()->hasUrls())
 360                 event->accept();
 361         /// \todo Ask lyx-devel is this is enough:
 362         /// if (event->mimeData()->hasFormat("text/plain"))
 363         ///     event->acceptProposedAction();
 364 }
 365
 366
 367 void GuiViewBase::dropEvent(QDropEvent* event)
 368 {
 369         QList<QUrl> files = event->mimeData()->urls();
 370         if (files.isEmpty())
 371                 return;
 372
 373         LYXERR(Debug::GUI) << BOOST_CURRENT_FUNCTION
 374                 << " got URLs!" << endl;
 375         for (int i = 0; i != files.size(); ++i) {
 376                 string const file = support::os::internal_path(fromqstr(
 377                         files.at(i).toLocalFile()));
 378                 if (!file.empty())
 379                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
 380         }
 381 }
 382
 383
 384 void GuiViewBase::saveGeometry()
 385 {
 386         static bool done = false;
 387         if (done)
 388                 return;
 389         else
 390                 done = true;
 391
 392         // FIXME:
 393         // change the ifdef to 'geometry = normalGeometry();' only
 394         // when Trolltech has fixed the broken normalGeometry on X11:
 395         // http://www.trolltech.com/developer/task-tracker/index_html?id=119684+&method=entry
 396         // Then also the moveEvent, resizeEvent, and the
 397         // code for floatingGeometry_ can be removed;
 398         // adjust GuiViewBase::setGeometry()
 399
 400         QRect normal_geometry;
 401         int maximized;
 402 #ifdef Q_WS_WIN
 403         normal_geometry = normalGeometry();
 404         if (isMaximized()) {
 405                 maximized = CompletelyMaximized;
 406         } else {
 407                 maximized = NotMaximized;
 408         }
 409 #else
 410         normal_geometry = updateFloatingGeometry();
 411
 412         QDesktopWidget& dw = *qApp->desktop();
 413         QRect desk = dw.availableGeometry(dw.primaryScreen());
 414         // Qt bug on Linux: load completely maximized, vert max. save-> frameGeometry().height() is wrong
 415         if (isMaximized() && desk.width() <= frameGeometry().width() && desk.height() <= frameGeometry().height()) {
 416                 maximized = CompletelyMaximized;
 417                 // maximizing does not work when the window is allready hor. or vert. maximized
 418                 // Tested only on KDE
 419                 int dh = frameGeometry().height() - height();
 420                 if (desk.height() <= normal_geometry.height() + dh)
 421                         normal_geometry.setHeight(normal_geometry.height() - 1);
 422                 int dw = frameGeometry().width() - width();
 423                 if (desk.width() <= normal_geometry.width() + dw)
 424                         normal_geometry.setWidth(normal_geometry.width() - 1);
 425         } else if (desk.height() <= frameGeometry().height()) {
 426                 maximized = VerticallyMaximized;
 427         } else if (desk.width() <= frameGeometry().width()) {
 428                 maximized = HorizontallyMaximized;
 429         } else {
 430                 maximized = NotMaximized;
 431         }
 432
 433
 434 #endif
 435         // save windows size and position
 436         Session & session = LyX::ref().session();
 437         session.sessionInfo().save("WindowWidth", convert<string>(normal_geometry.width()));
 438         session.sessionInfo().save("WindowHeight", convert<string>(normal_geometry.height()));
 439         session.sessionInfo().save("WindowMaximized", convert<string>(maximized));
 440         session.sessionInfo().save("IconSizeXY", convert<string>(iconSize().width()));
 441         if (lyxrc.geometry_xysaved) {
 442                 session.sessionInfo().save("WindowPosX", convert<string>(normal_geometry.x() + d.posx_offset));
 443                 session.sessionInfo().save("WindowPosY", convert<string>(normal_geometry.y() + d.posy_offset));
 444         }
 445         toolbars_->saveToolbarInfo();
 446 }
 447
 448
 449 void GuiViewBase::setGeometry(unsigned int width,
 450                           unsigned int height,
 451                           int posx, int posy,
 452                           int maximized,
 453                           unsigned int iconSizeXY,
 454                           const string & geometryArg)
 455 {
 456         // use last value (not at startup)
 457         if (d.lastIconSize != 0)
 458                 setIconSize(d.lastIconSize);
 459         else if (iconSizeXY != 0)
 460                 setIconSize(iconSizeXY);
 461         else
 462                 setIconSize(d.normalIconSize);
 463
 464         // only true when the -geometry option was NOT used
 465         if (width != 0 && height != 0) {
 466                 if (posx != -1 && posy != -1) {
 467                         // if there are startup positioning problems:
 468                         // http://doc.trolltech.com/4.2/qdesktopwidget.html
 469                         QDesktopWidget& dw = *qApp->desktop();
 470                         if (dw.isVirtualDesktop()) {
 471                                 if(!dw.geometry().contains(posx, posy)) {
 472                                         posx = 50;
 473                                         posy = 50;
 474                                 }
 475                         } else {
 476                                 // Which system doesn't use a virtual desktop?
 477                                 // TODO save also last screen number and check if it is still availabe.
 478                         }
 479 #ifdef Q_WS_WIN
 480                         // FIXME: use setGeometry only when Trolltech has fixed the qt4/X11 bug
 481                         QWidget::setGeometry(posx, posy, width, height);
 482 #else
 483                         resize(width, height);
 484                         move(posx, posy);
 485 #endif
 486                 } else {
 487                         resize(width, height);
 488                 }
 489
 490                 // remember original size
 491                 floatingGeometry_ = QRect(posx, posy, width, height);
 492
 493                 if (maximized != NotMaximized) {
 494                         if (maximized == CompletelyMaximized) {
 495                                 setWindowState(Qt::WindowMaximized);
 496                         } else {
 497 #ifndef Q_WS_WIN
 498                                 // TODO How to set by the window manager?
 499                                 //      setWindowState(Qt::WindowVerticallyMaximized);
 500                                 //      is not possible
 501                                 QDesktopWidget& dw = *qApp->desktop();
 502                                 QRect desk = dw.availableGeometry(dw.primaryScreen());
 503                                 if (maximized == VerticallyMaximized)
 504                                         resize(width, desk.height());
 505                                 if (maximized == HorizontallyMaximized)
 506                                         resize(desk.width(), height);
 507 #endif
 508                         }
 509                 }
 510         }
 511         else
 512         {
 513                 // FIXME: move this code into parse_geometry() (LyX.cpp)
 514 #ifdef Q_WS_WIN
 515                 int x, y;
 516                 int w, h;
 517                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 518                 re.indexIn(toqstr(geometryArg.c_str()));
 519                 w = re.cap(1).toInt();
 520                 h = re.cap(2).toInt();
 521                 x = re.cap(3).toInt();
 522                 y = re.cap(4).toInt();
 523                 QWidget::setGeometry( x, y, w, h );
 524 #else
 525                 // silence warning
 526                 (void)geometryArg;
 527 #endif
 528         }
 529
 530         d.setBackground();
 531
 532         show();
 533
 534         // For an unknown reason, the Window title update is not effective for
 535         // the second windows up until it is shown on screen (Qt bug?).
 536         updateWindowTitle();
 537
 538         // after show geometry() has changed (Qt bug?)
 539         // we compensate the drift when storing the position
 540         d.posx_offset = 0;
 541         d.posy_offset = 0;
 542         if (width != 0 && height != 0)
 543                 if (posx != -1 && posy != -1) {
 544 #ifdef Q_WS_WIN
 545                         d.posx_offset = posx - normalGeometry().x();
 546                         d.posy_offset = posy - normalGeometry().y();
 547 #else
 548 #ifndef Q_WS_MACX
 549                         if (maximized == NotMaximized) {
 550                                 d.posx_offset = posx - geometry().x();
 551                                 d.posy_offset = posy - geometry().y();
 552                         }
 553 #endif
 554 #endif
 555                 }
 556 }
 557
 558
 559 void GuiViewBase::setWindowTitle(docstring const & t, docstring const & it)
 560 {
 561         QString title = windowTitle();
 562         QString new_title = toqstr(t);
 563         if (title != new_title) {
 564                 QMainWindow::setWindowTitle(new_title);
 565                 QMainWindow::setWindowIconText(toqstr(it));
 566         }
 567 }
 568
 569
 570 void GuiViewBase::message(docstring const & str)
 571 {
 572         statusBar()->showMessage(toqstr(str));
 573         statusbar_timer_.stop();
 574         statusbar_timer_.start(statusbar_timer_value);
 575 }
 576
 577
 578 void GuiViewBase::clearMessage()
 579 {
 580         update_view_state_qt();
 581 }
 582
 583
 584 void GuiViewBase::setIconSize(unsigned int size)
 585 {
 586         d.lastIconSize = size;
 587         QMainWindow::setIconSize(QSize(size, size));
 588 }
 589
 590
 591 void GuiViewBase::smallSizedIcons()
 592 {
 593         setIconSize(d.smallIconSize);
 594 }
 595
 596
 597 void GuiViewBase::normalSizedIcons()
 598 {
 599         setIconSize(d.normalIconSize);
 600 }
 601
 602
 603 void GuiViewBase::bigSizedIcons()
 604 {
 605         setIconSize(d.bigIconSize);
 606 }
 607
 608
 609 void GuiViewBase::update_view_state_qt()
 610 {
 611         if (!hasFocus())
 612                 return;
 613         theLyXFunc().setLyXView(this);
 614         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 615         statusbar_timer_.stop();
 616 }
 617
 618
 619 void GuiViewBase::closeCurrentTab()
 620 {
 621         dispatch(FuncRequest(LFUN_BUFFER_CLOSE));
 622 }
 623
 624
 625 void GuiViewBase::currentTabChanged(int i)
 626 {
 627         disconnectBuffer();
 628         disconnectBufferView();
 629         GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->widget(i));
 630         BOOST_ASSERT(wa);
 631         BufferView & bv = wa->bufferView();
 632         connectBufferView(bv);
 633         connectBuffer(bv.buffer());
 634         bv.updateMetrics(false);
 635         bv.cursor().fixIfBroken();
 636         wa->setUpdatesEnabled(true);
 637         wa->redraw();
 638         wa->setFocus();
 639
 640         updateToc();
 641         // Buffer-dependent dialogs should be updated or
 642         // hidden. This should go here because some dialogs (eg ToC)
 643         // require bv_->text.
 644         getDialogs().updateBufferDependent(true);
 645         updateToolbars();
 646         updateLayoutChoice();
 647         updateWindowTitle();
 648         updateStatusBar();
 649
 650         LYXERR(Debug::GUI) << "currentTabChanged " << i
 651                 << "File" << bv.buffer().fileName() << endl;
 652 }
 653
 654
 655 void GuiViewBase::updateStatusBar()
 656 {
 657         // let the user see the explicit message
 658         if (statusbar_timer_.isActive())
 659                 return;
 660
 661         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 662 }
 663
 664
 665 void GuiViewBase::activated(FuncRequest const & func)
 666 {
 667         dispatch(func);
 668 }
 669
 670
 671 bool GuiViewBase::hasFocus() const
 672 {
 673         return qApp->activeWindow() == this;
 674 }
 675
 676
 677 QRect  GuiViewBase::updateFloatingGeometry()
 678 {
 679         QDesktopWidget& dw = *qApp->desktop();
 680         QRect desk = dw.availableGeometry(dw.primaryScreen());
 681         // remember only non-maximized sizes
 682         if (!isMaximized() && desk.width() > frameGeometry().width() && desk.height() > frameGeometry().height()) {
 683                 floatingGeometry_ = QRect(x(), y(), width(), height());
 684         }
 685         return floatingGeometry_;
 686 }
 687
 688
 689 void GuiViewBase::resizeEvent(QResizeEvent *)
 690 {
 691         updateFloatingGeometry();
 692 }
 693
 694
 695 void GuiViewBase::moveEvent(QMoveEvent *)
 696 {
 697         updateFloatingGeometry();
 698 }
 699
 700
 701 bool GuiViewBase::event(QEvent * e)
 702 {
 703         switch (e->type())
 704         {
 705         // Useful debug code:
 706         //case QEvent::WindowActivate:
 707         //case QEvent::ActivationChange:
 708         //case QEvent::WindowDeactivate:
 709         //case QEvent::Paint:
 710         //case QEvent::Enter:
 711         //case QEvent::Leave:
 712         //case QEvent::HoverEnter:
 713         //case QEvent::HoverLeave:
 714         //case QEvent::HoverMove:
 715         //case QEvent::StatusTip:
 716         //case QEvent::DragEnter:
 717         //case QEvent::DragLeave:
 718         //case QEvent::Drop:
 719         //      break;
 720
 721         case QEvent::ShortcutOverride: {
 722                 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 723                 if (d.tab_widget_->count() == 0) {
 724                         theLyXFunc().setLyXView(this);
 725                         boost::shared_ptr<GuiKeySymbol> sym(new GuiKeySymbol);
 726                         sym->set(ke);
 727                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 728                         e->accept();
 729                         return true;
 730                 }
 731                 if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
 732                         boost::shared_ptr<GuiKeySymbol> sym(new GuiKeySymbol);
 733                         sym->set(ke);
 734                         currentWorkArea()->processKeySym(sym, key_modifier::none);
 735                         e->accept();
 736                         return true;
 737                 }
 738         }
 739         default:
 740                 return QMainWindow::event(e);
 741         }
 742 }
 743
 744
 745 bool GuiViewBase::focusNextPrevChild(bool /*next*/)
 746 {
 747         setFocus();
 748         return true;
 749 }
 750
 751
 752 void GuiViewBase::showView()
 753 {
 754         QMainWindow::setWindowTitle(qt_("LyX"));
 755         QMainWindow::show();
 756         updateFloatingGeometry();
 757 }
 758
 759
 760 void GuiViewBase::busy(bool yes)
 761 {
 762         if (d.tab_widget_->count()) {
 763                 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget());
 764                 BOOST_ASSERT(wa);
 765                 wa->setUpdatesEnabled(!yes);
 766                 if (yes)
 767                         wa->stopBlinkingCursor();
 768                 else
 769                         wa->startBlinkingCursor();
 770         }
 771
 772         if (yes)
 773                 QApplication::setOverrideCursor(Qt::WaitCursor);
 774         else
 775                 QApplication::restoreOverrideCursor();
 776 }
 777
 778
 779 Toolbars::ToolbarPtr GuiViewBase::makeToolbar(ToolbarInfo const & tbinfo, bool newline)
 780 {
 781         GuiToolbar * toolBar = new GuiToolbar(tbinfo, *this);
 782
 783         if (tbinfo.flags & ToolbarInfo::TOP) {
 784                 if (newline)
 785                         addToolBarBreak(Qt::TopToolBarArea);
 786                 addToolBar(Qt::TopToolBarArea, toolBar);
 787         }
 788
 789         if (tbinfo.flags & ToolbarInfo::BOTTOM) {
 790 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 791 #if (QT_VERSION >= 0x040202)
 792                 if (newline)
 793                         addToolBarBreak(Qt::BottomToolBarArea);
 794 #endif
 795                 addToolBar(Qt::BottomToolBarArea, toolBar);
 796         }
 797
 798         if (tbinfo.flags & ToolbarInfo::LEFT) {
 799 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 800 #if (QT_VERSION >= 0x040202)
 801                 if (newline)
 802                         addToolBarBreak(Qt::LeftToolBarArea);
 803 #endif
 804                 addToolBar(Qt::LeftToolBarArea, toolBar);
 805         }
 806
 807         if (tbinfo.flags & ToolbarInfo::RIGHT) {
 808 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 809 #if (QT_VERSION >= 0x040202)
 810                 if (newline)
 811                         addToolBarBreak(Qt::RightToolBarArea);
 812 #endif
 813                 addToolBar(Qt::RightToolBarArea, toolBar);
 814         }
 815
 816         // The following does not work so I cannot restore to exact toolbar location
 817         /*
 818         ToolbarSection::ToolbarInfo & tbinfo = LyX::ref().session().toolbars().load(tbinfo.name);
 819         toolBar->move(tbinfo.posx, tbinfo.posy);
 820         */
 821
 822         return Toolbars::ToolbarPtr(toolBar);
 823 }
 824
 825
 826 WorkArea * GuiViewBase::workArea(Buffer & buffer)
 827 {
 828         for (int i = 0; i != d.tab_widget_->count(); ++i) {
 829                 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->widget(i));
 830                 BOOST_ASSERT(wa);
 831                 if (&wa->bufferView().buffer() == &buffer)
 832                         return wa;
 833         }
 834         return 0;
 835 }
 836
 837
 838 WorkArea * GuiViewBase::addWorkArea(Buffer & buffer)
 839 {
 840         GuiWorkArea * wa = new GuiWorkArea(buffer, *this);
 841         wa->setUpdatesEnabled(false);
 842         d.tab_widget_->addTab(wa, toqstr(makeDisplayPath(buffer.fileName(), 30)));
 843         wa->bufferView().updateMetrics(false);
 844         if (d.stack_widget_)
 845                 d.stack_widget_->setCurrentWidget(d.tab_widget_);
 846         // Hide tabbar if there's only one tab.
 847         d.tab_widget_->showBar(d.tab_widget_->count() > 1);
 848         return wa;
 849 }
 850
 851
 852 WorkArea * GuiViewBase::currentWorkArea()
 853 {
 854         if (d.tab_widget_->count() == 0)
 855                 return 0;
 856         BOOST_ASSERT(dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget()));
 857         return dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget());
 858 }
 859
 860
 861 WorkArea const * GuiViewBase::currentWorkArea() const
 862 {
 863         if (d.tab_widget_->count() == 0)
 864                 return 0;
 865         BOOST_ASSERT(dynamic_cast<GuiWorkArea const *>(d.tab_widget_->currentWidget()));
 866         return dynamic_cast<GuiWorkArea const *>(d.tab_widget_->currentWidget());
 867 }
 868
 869
 870 void GuiViewBase::setCurrentWorkArea(WorkArea * work_area)
 871 {
 872         BOOST_ASSERT(work_area);
 873
 874         // Changing work area can result from opening a file so
 875         // update the toc in any case.
 876         updateToc();
 877
 878         GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(work_area);
 879         BOOST_ASSERT(wa);
 880         if (wa != d.tab_widget_->currentWidget())
 881                 // Switch to the work area.
 882                 d.tab_widget_->setCurrentWidget(wa);
 883         else
 884                 // Make sure the work area is up to date.
 885                 currentTabChanged(d.tab_widget_->currentIndex());
 886         wa->setFocus();
 887 }
 888
 889
 890 void GuiViewBase::removeWorkArea(WorkArea * work_area)
 891 {
 892         BOOST_ASSERT(work_area);
 893         if (work_area == currentWorkArea()) {
 894                 disconnectBuffer();
 895                 disconnectBufferView();
 896         }
 897
 898         // removing a work area often results from closing a file so
 899         // update the toc in any case.
 900         updateToc();
 901
 902         GuiWorkArea * gwa = dynamic_cast<GuiWorkArea *>(work_area);
 903         gwa->setUpdatesEnabled(false);
 904         BOOST_ASSERT(gwa);
 905         int index = d.tab_widget_->indexOf(gwa);
 906         d.tab_widget_->removeTab(index);
 907
 908         delete gwa;
 909
 910         if (d.tab_widget_->count()) {
 911                 // make sure the next work area is enabled.
 912                 d.tab_widget_->currentWidget()->setUpdatesEnabled(true);
 913                 // Hide tabbar if there's only one tab.
 914                 d.tab_widget_->showBar(d.tab_widget_->count() > 1);
 915                 return;
 916         }
 917
 918         getDialogs().hideBufferDependent();
 919         if (d.stack_widget_) {
 920                 // No more work area, switch to the background widget.
 921                 d.setBackground();
 922         }
 923 }
 924
 925
 926 void GuiViewBase::showMiniBuffer(bool visible)
 927 {
 928         Toolbar * t = toolbars_->display("minibuffer", visible);
 929         if (t)
 930                 t->focusCommandBuffer();
 931 }
 932
 933
 934 void GuiViewBase::openMenu(docstring const & name)
 935 {
 936         d.menubar_->openByName(name);
 937 }
 938
 939 } // namespace frontend
 940 } // namespace lyx
 941
 942 #include "GuiView_moc.cpp"