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 "GuiToolbars.h"
  24 #include "qt_helpers.h"
  25
  26 #include "frontends/Application.h"
  27 #include "frontends/Dialogs.h"
  28 #include "frontends/Gui.h"
  29 #include "frontends/WorkArea.h"
  30
  31 #include "support/filetools.h"
  32 #include "support/convert.h"
  33 #include "support/lstrings.h"
  34 #include "support/os.h"
  35
  36 #include "Buffer.h"
  37 #include "BufferParams.h"
  38 #include "BufferView.h"
  39 #include "BufferList.h"
  40 #include "debug.h"
  41 #include "FuncRequest.h"
  42 #include "Layout.h"
  43 #include "LyX.h"
  44 #include "LyXFunc.h"
  45 #include "LyXRC.h"
  46 #include "MenuBackend.h"
  47 #include "Paragraph.h"
  48 #include "Session.h"
  49 #include "version.h"
  50
  51 #include <boost/current_function.hpp>
  52
  53 #include <QAction>
  54 #include <QApplication>
  55 #include <QCloseEvent>
  56 #include <QDesktopWidget>
  57 #include <QDragEnterEvent>
  58 #include <QDropEvent>
  59 #include <QList>
  60 #include <QMenu>
  61 #include <QPainter>
  62 #include <QPixmap>
  63 #include <QPushButton>
  64 #include <QStackedWidget>
  65 #include <QStatusBar>
  66 #include <QToolBar>
  67 #include <QUrl>
  68
  69 using std::endl;
  70 using std::string;
  71 using std::vector;
  72
  73 namespace lyx {
  74
  75 using support::FileName;
  76 using support::libFileSearch;
  77 using support::makeDisplayPath;
  78
  79 extern bool quitting;
  80
  81 namespace frontend {
  82
  83 namespace {
  84
  85 int const statusbar_timer_value = 3000;
  86
  87 class BackgroundWidget : public QWidget
  88 {
  89 public:
  90         BackgroundWidget(QString const & file, QString const & text)
  91         {
  92                 splash_ = new QPixmap(file);
  93                 if (!splash_) {
  94                         lyxerr << "could not load splash screen: '" << fromqstr(file) << "'" << endl;
  95                         return;
  96                 }
  97
  98                 QPainter pain(splash_);
  99                 pain.setPen(QColor(255, 255, 0));
 100                 QFont font;
 101                 // The font used to display the version info
 102                 font.setStyleHint(QFont::SansSerif);
 103                 font.setWeight(QFont::Bold);
 104                 font.setPointSize(convert<int>(lyxrc.font_sizes[Font::SIZE_LARGE]));
 105                 pain.setFont(font);
 106                 pain.drawText(260, 270, text);
 107         }
 108
 109         void paintEvent(QPaintEvent *)
 110         {
 111                 if (!splash_)
 112                         return;
 113
 114                 int x = (width() - splash_->width()) / 2;
 115                 int y = (height() - splash_->height()) / 2;
 116                 QPainter pain(this);
 117                 pain.drawPixmap(x, y, *splash_);
 118         }
 119
 120 private:
 121         QPixmap * splash_;
 122 };
 123
 124 };
 125
 126
 127 struct GuiViewBase::GuiViewPrivate
 128 {
 129         string cur_title;
 130
 131         int posx_offset;
 132         int posy_offset;
 133
 134         TabWorkArea * tab_widget_;
 135         QStackedWidget * stack_widget_;
 136         BackgroundWidget * bg_widget_;
 137         /// view's menubar
 138         GuiMenubar * menubar_;
 139         /// view's toolbars
 140         GuiToolbars * toolbars_;
 141         ///
 142         docstring current_layout;
 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 TabWorkArea;
 236         QObject::connect(d.tab_widget_, SIGNAL(currentWorkAreaChanged(GuiWorkArea *)),
 237                 this, SLOT(on_currentWorkAreaChanged(GuiWorkArea *)));
 238
 239         d.initBackground();
 240         if (d.bg_widget_) {
 241                 LYXERR(Debug::GUI) << "stack widget!" << endl;
 242                 d.stack_widget_ = new QStackedWidget;
 243                 d.stack_widget_->addWidget(d.bg_widget_);
 244                 d.stack_widget_->addWidget(d.tab_widget_);
 245                 setCentralWidget(d.stack_widget_);
 246         } else {
 247                 d.stack_widget_ = 0;
 248                 setCentralWidget(d.tab_widget_);
 249         }
 250
 251         // For Drag&Drop.
 252         setAcceptDrops(true);
 253 }
 254
 255
 256 GuiViewBase::~GuiViewBase()
 257 {
 258         delete d.menubar_;
 259         delete d.toolbars_;
 260         delete &d;
 261 }
 262
 263
 264 void GuiViewBase::close()
 265 {
 266         quitting_by_menu_ = true;
 267         while (d.tab_widget_->count()) {
 268                 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->widget(0));
 269                 BOOST_ASSERT(wa);
 270                 d.tab_widget_->removeTab(0);
 271                 delete wa;
 272         }
 273         QMainWindow::close();
 274         quitting_by_menu_ = false;
 275 }
 276
 277
 278 void GuiViewBase::setFocus()
 279 {
 280         if (d.tab_widget_->count())
 281                 d.tab_widget_->currentWidget()->setFocus();
 282 }
 283
 284
 285 QMenu* GuiViewBase::createPopupMenu()
 286 {
 287         return d.toolBarPopup(this);
 288 }
 289
 290
 291 void GuiViewBase::init()
 292 {
 293         // GuiToolbars *must* be initialised before GuiMenubar.
 294         d.toolbars_ = new GuiToolbars(*this);
 295         // FIXME: GuiToolbars::init() cannot be integrated in the ctor
 296         // because LyXFunc::getStatus() needs a properly initialized
 297         // GuiToolbars object (for LFUN_TOOLBAR_TOGGLE).
 298         d.toolbars_->init();
 299         d.menubar_ = new GuiMenubar(this, menubackend);
 300
 301         statusBar()->setSizeGripEnabled(true);
 302
 303         QObject::connect(&statusbar_timer_, SIGNAL(timeout()),
 304                 this, SLOT(update_view_state_qt()));
 305
 306         if (d.stack_widget_)
 307                 d.stack_widget_->setCurrentWidget(d.bg_widget_);
 308 }
 309
 310
 311 void GuiViewBase::closeEvent(QCloseEvent * close_event)
 312 {
 313         // we may have been called through the close window button
 314         // which bypasses the LFUN machinery.
 315         if (!quitting_by_menu_ && theApp()->gui().viewIds().size() == 1) {
 316                 if (!theBufferList().quitWriteAll()) {
 317                         close_event->ignore();
 318                         return;
 319                 }
 320         }
 321
 322         // Make sure that no LFUN use this close to be closed View.
 323         theLyXFunc().setLyXView(0);
 324         // Make sure the timer time out will not trigger a statusbar update.
 325         statusbar_timer_.stop();
 326
 327         theApp()->gui().unregisterView(id());
 328         if (!theApp()->gui().viewIds().empty()) {
 329                 // Just close the window and do nothing else if this is not the
 330                 // last window.
 331                 close_event->accept();
 332                 return;
 333         }
 334
 335         quitting = true;
 336
 337         // this is the place where we leave the frontend.
 338         // it is the only point at which we start quitting.
 339         saveGeometry();
 340         close_event->accept();
 341         // quit the event loop
 342         qApp->quit();
 343 }
 344
 345
 346 void GuiViewBase::dragEnterEvent(QDragEnterEvent * event)
 347 {
 348         if (event->mimeData()->hasUrls())
 349                 event->accept();
 350         /// \todo Ask lyx-devel is this is enough:
 351         /// if (event->mimeData()->hasFormat("text/plain"))
 352         ///     event->acceptProposedAction();
 353 }
 354
 355
 356 void GuiViewBase::dropEvent(QDropEvent* event)
 357 {
 358         QList<QUrl> files = event->mimeData()->urls();
 359         if (files.isEmpty())
 360                 return;
 361
 362         LYXERR(Debug::GUI) << BOOST_CURRENT_FUNCTION
 363                 << " got URLs!" << endl;
 364         for (int i = 0; i != files.size(); ++i) {
 365                 string const file = support::os::internal_path(fromqstr(
 366                         files.at(i).toLocalFile()));
 367                 if (!file.empty())
 368                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
 369         }
 370 }
 371
 372
 373 void GuiViewBase::saveGeometry()
 374 {
 375         static bool done = false;
 376         if (done)
 377                 return;
 378         else
 379                 done = true;
 380
 381         // FIXME:
 382         // change the ifdef to 'geometry = normalGeometry();' only
 383         // when Trolltech has fixed the broken normalGeometry on X11:
 384         // http://www.trolltech.com/developer/task-tracker/index_html?id=119684+&method=entry
 385         // Then also the moveEvent, resizeEvent, and the
 386         // code for floatingGeometry_ can be removed;
 387         // adjust GuiViewBase::setGeometry()
 388
 389         QRect normal_geometry;
 390         int maximized;
 391 #ifdef Q_WS_WIN
 392         normal_geometry = normalGeometry();
 393         if (isMaximized()) {
 394                 maximized = CompletelyMaximized;
 395         } else {
 396                 maximized = NotMaximized;
 397         }
 398 #else
 399         normal_geometry = updateFloatingGeometry();
 400
 401         QDesktopWidget& dw = *qApp->desktop();
 402         QRect desk = dw.availableGeometry(dw.primaryScreen());
 403         // Qt bug on Linux: load completely maximized, vert max. save-> frameGeometry().height() is wrong
 404         if (isMaximized() && desk.width() <= frameGeometry().width() && desk.height() <= frameGeometry().height()) {
 405                 maximized = CompletelyMaximized;
 406                 // maximizing does not work when the window is allready hor. or vert. maximized
 407                 // Tested only on KDE
 408                 int dh = frameGeometry().height() - height();
 409                 if (desk.height() <= normal_geometry.height() + dh)
 410                         normal_geometry.setHeight(normal_geometry.height() - 1);
 411                 int dw = frameGeometry().width() - width();
 412                 if (desk.width() <= normal_geometry.width() + dw)
 413                         normal_geometry.setWidth(normal_geometry.width() - 1);
 414         } else if (desk.height() <= frameGeometry().height()) {
 415                 maximized = VerticallyMaximized;
 416         } else if (desk.width() <= frameGeometry().width()) {
 417                 maximized = HorizontallyMaximized;
 418         } else {
 419                 maximized = NotMaximized;
 420         }
 421
 422
 423 #endif
 424         // save windows size and position
 425         Session & session = LyX::ref().session();
 426         session.sessionInfo().save("WindowWidth", convert<string>(normal_geometry.width()));
 427         session.sessionInfo().save("WindowHeight", convert<string>(normal_geometry.height()));
 428         session.sessionInfo().save("WindowMaximized", convert<string>(maximized));
 429         session.sessionInfo().save("IconSizeXY", convert<string>(iconSize().width()));
 430         if (lyxrc.geometry_xysaved) {
 431                 session.sessionInfo().save("WindowPosX", convert<string>(normal_geometry.x() + d.posx_offset));
 432                 session.sessionInfo().save("WindowPosY", convert<string>(normal_geometry.y() + d.posy_offset));
 433         }
 434         d.toolbars_->saveToolbarInfo();
 435 }
 436
 437
 438 void GuiViewBase::setGeometry(unsigned int width,
 439                           unsigned int height,
 440                           int posx, int posy,
 441                           int maximized,
 442                           unsigned int iconSizeXY,
 443                           const string & geometryArg)
 444 {
 445         // use last value (not at startup)
 446         if (d.lastIconSize != 0)
 447                 setIconSize(d.lastIconSize);
 448         else if (iconSizeXY != 0)
 449                 setIconSize(iconSizeXY);
 450         else
 451                 setIconSize(d.normalIconSize);
 452
 453         // only true when the -geometry option was NOT used
 454         if (width != 0 && height != 0) {
 455                 if (posx != -1 && posy != -1) {
 456                         // if there are startup positioning problems:
 457                         // http://doc.trolltech.com/4.2/qdesktopwidget.html
 458                         QDesktopWidget& dw = *qApp->desktop();
 459                         if (dw.isVirtualDesktop()) {
 460                                 if(!dw.geometry().contains(posx, posy)) {
 461                                         posx = 50;
 462                                         posy = 50;
 463                                 }
 464                         } else {
 465                                 // Which system doesn't use a virtual desktop?
 466                                 // TODO save also last screen number and check if it is still availabe.
 467                         }
 468 #ifdef Q_WS_WIN
 469                         // FIXME: use setGeometry only when Trolltech has fixed the qt4/X11 bug
 470                         QWidget::setGeometry(posx, posy, width, height);
 471 #else
 472                         resize(width, height);
 473                         move(posx, posy);
 474 #endif
 475                 } else {
 476                         resize(width, height);
 477                 }
 478
 479                 // remember original size
 480                 floatingGeometry_ = QRect(posx, posy, width, height);
 481
 482                 if (maximized != NotMaximized) {
 483                         if (maximized == CompletelyMaximized) {
 484                                 setWindowState(Qt::WindowMaximized);
 485                         } else {
 486 #ifndef Q_WS_WIN
 487                                 // TODO How to set by the window manager?
 488                                 //      setWindowState(Qt::WindowVerticallyMaximized);
 489                                 //      is not possible
 490                                 QDesktopWidget& dw = *qApp->desktop();
 491                                 QRect desk = dw.availableGeometry(dw.primaryScreen());
 492                                 if (maximized == VerticallyMaximized)
 493                                         resize(width, desk.height());
 494                                 if (maximized == HorizontallyMaximized)
 495                                         resize(desk.width(), height);
 496 #endif
 497                         }
 498                 }
 499         }
 500         else
 501         {
 502                 // FIXME: move this code into parse_geometry() (LyX.cpp)
 503 #ifdef Q_WS_WIN
 504                 int x, y;
 505                 int w, h;
 506                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 507                 re.indexIn(toqstr(geometryArg.c_str()));
 508                 w = re.cap(1).toInt();
 509                 h = re.cap(2).toInt();
 510                 x = re.cap(3).toInt();
 511                 y = re.cap(4).toInt();
 512                 QWidget::setGeometry( x, y, w, h );
 513 #else
 514                 // silence warning
 515                 (void)geometryArg;
 516 #endif
 517         }
 518
 519         d.setBackground();
 520
 521         show();
 522
 523         // For an unknown reason, the Window title update is not effective for
 524         // the second windows up until it is shown on screen (Qt bug?).
 525         updateWindowTitle();
 526
 527         // after show geometry() has changed (Qt bug?)
 528         // we compensate the drift when storing the position
 529         d.posx_offset = 0;
 530         d.posy_offset = 0;
 531         if (width != 0 && height != 0)
 532                 if (posx != -1 && posy != -1) {
 533 #ifdef Q_WS_WIN
 534                         d.posx_offset = posx - normalGeometry().x();
 535                         d.posy_offset = posy - normalGeometry().y();
 536 #else
 537 #ifndef Q_WS_MACX
 538                         if (maximized == NotMaximized) {
 539                                 d.posx_offset = posx - geometry().x();
 540                                 d.posy_offset = posy - geometry().y();
 541                         }
 542 #endif
 543 #endif
 544                 }
 545 }
 546
 547
 548 void GuiViewBase::setWindowTitle(docstring const & t, docstring const & it)
 549 {
 550         QString title = windowTitle();
 551         QString new_title = toqstr(t);
 552         if (title != new_title) {
 553                 QMainWindow::setWindowTitle(new_title);
 554                 QMainWindow::setWindowIconText(toqstr(it));
 555         }
 556         if (Buffer const * buf = buffer())
 557                 d.tab_widget_->setTabText(d.tab_widget_->currentIndex(),
 558                         toqstr(makeDisplayPath(buf->fileName(), 30)));
 559 }
 560
 561
 562 void GuiViewBase::message(docstring const & str)
 563 {
 564         statusBar()->showMessage(toqstr(str));
 565         statusbar_timer_.stop();
 566         statusbar_timer_.start(statusbar_timer_value);
 567 }
 568
 569
 570 void GuiViewBase::clearMessage()
 571 {
 572         update_view_state_qt();
 573 }
 574
 575
 576 void GuiViewBase::setIconSize(unsigned int size)
 577 {
 578         d.lastIconSize = size;
 579         QMainWindow::setIconSize(QSize(size, size));
 580 }
 581
 582
 583 void GuiViewBase::smallSizedIcons()
 584 {
 585         setIconSize(d.smallIconSize);
 586 }
 587
 588
 589 void GuiViewBase::normalSizedIcons()
 590 {
 591         setIconSize(d.normalIconSize);
 592 }
 593
 594
 595 void GuiViewBase::bigSizedIcons()
 596 {
 597         setIconSize(d.bigIconSize);
 598 }
 599
 600
 601 void GuiViewBase::update_view_state_qt()
 602 {
 603         if (!hasFocus())
 604                 return;
 605         theLyXFunc().setLyXView(this);
 606         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 607         statusbar_timer_.stop();
 608 }
 609
 610
 611 void GuiViewBase::on_currentWorkAreaChanged(GuiWorkArea * wa)
 612 {
 613         disconnectBuffer();
 614         disconnectBufferView();
 615         connectBufferView(wa->bufferView());
 616         connectBuffer(wa->bufferView().buffer());
 617
 618         updateToc();
 619         // Buffer-dependent dialogs should be updated or
 620         // hidden. This should go here because some dialogs (eg ToC)
 621         // require bv_->text.
 622         getDialogs().updateBufferDependent(true);
 623         updateToolbars();
 624         updateLayoutChoice();
 625         updateWindowTitle();
 626         updateStatusBar();
 627 }
 628
 629
 630 void GuiViewBase::updateStatusBar()
 631 {
 632         // let the user see the explicit message
 633         if (statusbar_timer_.isActive())
 634                 return;
 635
 636         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 637 }
 638
 639
 640 void GuiViewBase::activated(FuncRequest const & func)
 641 {
 642         dispatch(func);
 643 }
 644
 645
 646 bool GuiViewBase::hasFocus() const
 647 {
 648         return qApp->activeWindow() == this;
 649 }
 650
 651
 652 QRect  GuiViewBase::updateFloatingGeometry()
 653 {
 654         QDesktopWidget& dw = *qApp->desktop();
 655         QRect desk = dw.availableGeometry(dw.primaryScreen());
 656         // remember only non-maximized sizes
 657         if (!isMaximized() && desk.width() > frameGeometry().width() && desk.height() > frameGeometry().height()) {
 658                 floatingGeometry_ = QRect(x(), y(), width(), height());
 659         }
 660         return floatingGeometry_;
 661 }
 662
 663
 664 void GuiViewBase::resizeEvent(QResizeEvent *)
 665 {
 666         updateFloatingGeometry();
 667 }
 668
 669
 670 void GuiViewBase::moveEvent(QMoveEvent *)
 671 {
 672         updateFloatingGeometry();
 673 }
 674
 675
 676 bool GuiViewBase::event(QEvent * e)
 677 {
 678         switch (e->type())
 679         {
 680         // Useful debug code:
 681         //case QEvent::ActivationChange:
 682         //case QEvent::WindowDeactivate:
 683         //case QEvent::Paint:
 684         //case QEvent::Enter:
 685         //case QEvent::Leave:
 686         //case QEvent::HoverEnter:
 687         //case QEvent::HoverLeave:
 688         //case QEvent::HoverMove:
 689         //case QEvent::StatusTip:
 690         //case QEvent::DragEnter:
 691         //case QEvent::DragLeave:
 692         //case QEvent::Drop:
 693         //      break;
 694
 695         case QEvent::WindowActivate:
 696                 theApp()->setCurrentView(*this);
 697                 if (d.tab_widget_->count()) {
 698                         GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(
 699                                 d.tab_widget_->currentWidget());
 700                         BOOST_ASSERT(wa);
 701                         BufferView & bv = wa->bufferView();
 702                         connectBufferView(bv);
 703                         connectBuffer(bv.buffer());
 704                         // The document structure, name and dialogs might have
 705                         // changed in another view.
 706                         updateToc();
 707                         updateWindowTitle();
 708                         getDialogs().updateBufferDependent(true);
 709                 }
 710                 return QMainWindow::event(e);
 711
 712         case QEvent::ShortcutOverride: {
 713                 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 714                 if (d.tab_widget_->count() == 0) {
 715                         theLyXFunc().setLyXView(this);
 716                         KeySymbol sym;
 717                         setKeySymbol(&sym, ke);
 718                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 719                         e->accept();
 720                         return true;
 721                 }
 722                 if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
 723                         KeySymbol sym;
 724                         setKeySymbol(&sym, ke);
 725                         currentWorkArea()->processKeySym(sym, NoModifier);
 726                         e->accept();
 727                         return true;
 728                 }
 729         }
 730         default:
 731                 return QMainWindow::event(e);
 732         }
 733 }
 734
 735
 736 bool GuiViewBase::focusNextPrevChild(bool /*next*/)
 737 {
 738         setFocus();
 739         return true;
 740 }
 741
 742
 743 void GuiViewBase::showView()
 744 {
 745         QMainWindow::setWindowTitle(qt_("LyX"));
 746         QMainWindow::show();
 747         updateFloatingGeometry();
 748 }
 749
 750
 751 void GuiViewBase::busy(bool yes)
 752 {
 753         if (d.tab_widget_->count()) {
 754                 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget());
 755                 BOOST_ASSERT(wa);
 756                 wa->setUpdatesEnabled(!yes);
 757                 if (yes)
 758                         wa->stopBlinkingCursor();
 759                 else
 760                         wa->startBlinkingCursor();
 761         }
 762
 763         if (yes)
 764                 QApplication::setOverrideCursor(Qt::WaitCursor);
 765         else
 766                 QApplication::restoreOverrideCursor();
 767 }
 768
 769
 770 GuiToolbar * GuiViewBase::makeToolbar(ToolbarInfo const & tbinfo, bool newline)
 771 {
 772         GuiToolbar * toolBar = new GuiToolbar(tbinfo, *this);
 773
 774         if (tbinfo.flags & ToolbarInfo::TOP) {
 775                 if (newline)
 776                         addToolBarBreak(Qt::TopToolBarArea);
 777                 addToolBar(Qt::TopToolBarArea, toolBar);
 778         }
 779
 780         if (tbinfo.flags & ToolbarInfo::BOTTOM) {
 781 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 782 #if (QT_VERSION >= 0x040202)
 783                 if (newline)
 784                         addToolBarBreak(Qt::BottomToolBarArea);
 785 #endif
 786                 addToolBar(Qt::BottomToolBarArea, toolBar);
 787         }
 788
 789         if (tbinfo.flags & ToolbarInfo::LEFT) {
 790 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 791 #if (QT_VERSION >= 0x040202)
 792                 if (newline)
 793                         addToolBarBreak(Qt::LeftToolBarArea);
 794 #endif
 795                 addToolBar(Qt::LeftToolBarArea, toolBar);
 796         }
 797
 798         if (tbinfo.flags & ToolbarInfo::RIGHT) {
 799 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 800 #if (QT_VERSION >= 0x040202)
 801                 if (newline)
 802                         addToolBarBreak(Qt::RightToolBarArea);
 803 #endif
 804                 addToolBar(Qt::RightToolBarArea, toolBar);
 805         }
 806
 807         // The following does not work so I cannot restore to exact toolbar location
 808         /*
 809         ToolbarSection::ToolbarInfo & tbinfo = LyX::ref().session().toolbars().load(tbinfo.name);
 810         toolBar->move(tbinfo.posx, tbinfo.posy);
 811         */
 812
 813         return toolBar;
 814 }
 815
 816
 817 WorkArea * GuiViewBase::workArea(Buffer & buffer)
 818 {
 819         for (int i = 0; i != d.tab_widget_->count(); ++i) {
 820                 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->widget(i));
 821                 BOOST_ASSERT(wa);
 822                 if (&wa->bufferView().buffer() == &buffer)
 823                         return wa;
 824         }
 825         return 0;
 826 }
 827
 828
 829 WorkArea * GuiViewBase::addWorkArea(Buffer & buffer)
 830 {
 831         GuiWorkArea * wa = new GuiWorkArea(buffer, *this);
 832         wa->setUpdatesEnabled(false);
 833         d.tab_widget_->addTab(wa, toqstr(makeDisplayPath(buffer.fileName(), 30)));
 834         wa->bufferView().updateMetrics(false);
 835         if (d.stack_widget_)
 836                 d.stack_widget_->setCurrentWidget(d.tab_widget_);
 837         // Hide tabbar if there's only one tab.
 838         d.tab_widget_->showBar(d.tab_widget_->count() > 1);
 839         return wa;
 840 }
 841
 842
 843 WorkArea * GuiViewBase::currentWorkArea()
 844 {
 845         if (d.tab_widget_->count() == 0)
 846                 return 0;
 847         BOOST_ASSERT(dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget()));
 848         return dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget());
 849 }
 850
 851
 852 WorkArea const * GuiViewBase::currentWorkArea() const
 853 {
 854         if (d.tab_widget_->count() == 0)
 855                 return 0;
 856         BOOST_ASSERT(dynamic_cast<GuiWorkArea const *>(d.tab_widget_->currentWidget()));
 857         return dynamic_cast<GuiWorkArea const *>(d.tab_widget_->currentWidget());
 858 }
 859
 860
 861 void GuiViewBase::setCurrentWorkArea(WorkArea * work_area)
 862 {
 863         BOOST_ASSERT(work_area);
 864
 865         // Changing work area can result from opening a file so
 866         // update the toc in any case.
 867         updateToc();
 868
 869         GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(work_area);
 870         BOOST_ASSERT(wa);
 871         if (wa != d.tab_widget_->currentWidget())
 872                 // Switch to the work area.
 873                 d.tab_widget_->setCurrentWidget(wa);
 874         else
 875                 // Make sure the work area is up to date.
 876                 d.tab_widget_->on_currentTabChanged(d.tab_widget_->currentIndex());
 877         wa->setFocus();
 878 }
 879
 880
 881 void GuiViewBase::removeWorkArea(WorkArea * work_area)
 882 {
 883         BOOST_ASSERT(work_area);
 884         if (work_area == currentWorkArea()) {
 885                 disconnectBuffer();
 886                 disconnectBufferView();
 887         }
 888
 889         // removing a work area often results from closing a file so
 890         // update the toc in any case.
 891         updateToc();
 892
 893         GuiWorkArea * gwa = dynamic_cast<GuiWorkArea *>(work_area);
 894         gwa->setUpdatesEnabled(false);
 895         BOOST_ASSERT(gwa);
 896         int index = d.tab_widget_->indexOf(gwa);
 897         d.tab_widget_->removeTab(index);
 898
 899         delete gwa;
 900
 901         if (d.tab_widget_->count()) {
 902                 // make sure the next work area is enabled.
 903                 d.tab_widget_->currentWidget()->setUpdatesEnabled(true);
 904                 // Hide tabbar if there's only one tab.
 905                 d.tab_widget_->showBar(d.tab_widget_->count() > 1);
 906                 return;
 907         }
 908
 909         getDialogs().hideBufferDependent();
 910         if (d.stack_widget_) {
 911                 // No more work area, switch to the background widget.
 912                 d.setBackground();
 913         }
 914 }
 915
 916
 917 void GuiViewBase::showMiniBuffer(bool visible)
 918 {
 919         d.toolbars_->showCommandBuffer(visible);
 920 }
 921
 922
 923 void GuiViewBase::openMenu(docstring const & name)
 924 {
 925         d.menubar_->openByName(toqstr(name));
 926 }
 927
 928
 929 void GuiViewBase::openLayoutList()
 930 {
 931         d.toolbars_->openLayoutList();
 932 }
 933
 934
 935 void GuiViewBase::updateLayoutChoice()
 936 {
 937         // Don't show any layouts without a buffer
 938         if (!buffer()) {
 939                 d.toolbars_->clearLayoutList();
 940                 return;
 941         }
 942
 943         // Update the layout display
 944         if (d.toolbars_->updateLayoutList(buffer()->params().getTextClassPtr())) {
 945                 d.current_layout = buffer()->params().getTextClass().defaultLayoutName();
 946         }
 947
 948         docstring const & layout = currentWorkArea()->bufferView().cursor().
 949                 innerParagraph().layout()->name();
 950
 951         if (layout != d.current_layout) {
 952                 d.toolbars_->setLayout(layout);
 953                 d.current_layout = layout;
 954         }
 955 }
 956
 957
 958 bool GuiViewBase::isToolbarVisible(std::string const & id)
 959 {
 960         return d.toolbars_->visible(id);
 961 }
 962
 963 void GuiViewBase::updateToolbars()
 964 {
 965         WorkArea * wa = currentWorkArea();
 966         if (wa) {
 967                 bool const math =
 968                         wa->bufferView().cursor().inMathed();
 969                 bool const table =
 970                         lyx::getStatus(FuncRequest(LFUN_LAYOUT_TABULAR)).enabled();
 971                 bool const review =
 972                         lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).enabled() &&
 973                         lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).onoff(true);
 974
 975                 d.toolbars_->update(math, table, review);
 976         } else
 977                 d.toolbars_->update(false, false, false);
 978
 979         // update read-only status of open dialogs.
 980         getDialogs().checkStatus();
 981 }
 982
 983
 984 ToolbarInfo * GuiViewBase::getToolbarInfo(string const & name)
 985 {
 986         return d.toolbars_->getToolbarInfo(name);
 987 }
 988
 989
 990 void GuiViewBase::toggleToolbarState(string const & name, bool allowauto)
 991 {
 992         // it is possible to get current toolbar status like this,...
 993         // but I decide to obey the order of ToolbarBackend::flags
 994         // and disregard real toolbar status.
 995         // toolbars_->saveToolbarInfo();
 996         //
 997         // toggle state on/off/auto
 998         d.toolbars_->toggleToolbarState(name, allowauto);
 999         // update toolbar
1000         updateToolbars();
1001 }
1002
1003
1004 } // namespace frontend
1005 } // namespace lyx
1006
1007 #include "GuiView_moc.cpp"