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 "Cursor.h"
  41 #include "debug.h"
  42 #include "FuncRequest.h"
  43 #include "Layout.h"
  44 #include "LyX.h"
  45 #include "LyXFunc.h"
  46 #include "LyXRC.h"
  47 #include "MenuBackend.h"
  48 #include "Paragraph.h"
  49 #include "Session.h"
  50 #include "TextClass.h"
  51 #include "ToolbarBackend.h"
  52 #include "version.h"
  53
  54 #include <QAction>
  55 #include <QApplication>
  56 #include <QCloseEvent>
  57 #include <QDesktopWidget>
  58 #include <QDragEnterEvent>
  59 #include <QDropEvent>
  60 #include <QList>
  61 #include <QMenu>
  62 #include <QPainter>
  63 #include <QPixmap>
  64 #include <QPushButton>
  65 #include <QSplitter>
  66 #include <QStackedWidget>
  67 #include <QStatusBar>
  68 #include <QToolBar>
  69 #include <QUrl>
  70
  71 #include <boost/current_function.hpp>
  72
  73 using std::endl;
  74 using std::string;
  75 using std::vector;
  76
  77 namespace lyx {
  78
  79 using support::makeDisplayPath;
  80
  81 extern bool quitting;
  82
  83 namespace frontend {
  84
  85 namespace {
  86
  87 int const statusbar_timer_value = 3000;
  88
  89 class BackgroundWidget : public QWidget
  90 {
  91 public:
  92         BackgroundWidget(QString const & file, QString const & text)
  93         {
  94                 splash_ = new QPixmap(file);
  95                 if (!splash_) {
  96                         lyxerr << "could not load splash screen: '" << fromqstr(file) << "'" << endl;
  97                         return;
  98                 }
  99
 100                 QPainter pain(splash_);
 101                 pain.setPen(QColor(255, 255, 0));
 102                 QFont font;
 103                 // The font used to display the version info
 104                 font.setStyleHint(QFont::SansSerif);
 105                 font.setWeight(QFont::Bold);
 106                 font.setPointSize(convert<int>(lyxrc.font_sizes[FONT_SIZE_LARGE]));
 107                 pain.setFont(font);
 108                 pain.drawText(260, 270, text);
 109         }
 110
 111         void paintEvent(QPaintEvent *)
 112         {
 113                 if (!splash_)
 114                         return;
 115
 116                 int x = (width() - splash_->width()) / 2;
 117                 int y = (height() - splash_->height()) / 2;
 118                 QPainter pain(this);
 119                 pain.drawPixmap(x, y, *splash_);
 120         }
 121
 122 private:
 123         QPixmap * splash_;
 124 };
 125
 126 };
 127
 128
 129 struct GuiView::GuiViewPrivate
 130 {
 131         string cur_title;
 132
 133         int posx_offset;
 134         int posy_offset;
 135
 136         GuiWorkArea * current_work_area_;
 137         QSplitter * splitter_;
 138         QStackedWidget * stack_widget_;
 139         BackgroundWidget * bg_widget_;
 140         /// view's menubar
 141         GuiMenubar * menubar_;
 142         /// view's toolbars
 143         GuiToolbars * toolbars_;
 144         ///
 145         docstring current_layout;
 146
 147         GuiViewPrivate()
 148                 : current_work_area_(0), posx_offset(0), posy_offset(0)
 149         {}
 150
 151         ~GuiViewPrivate()
 152         {
 153                 delete splitter_;
 154                 delete bg_widget_;
 155                 delete stack_widget_;
 156                 delete menubar_;
 157                 delete toolbars_;
 158         }
 159
 160         unsigned int smallIconSize;
 161         unsigned int normalIconSize;
 162         unsigned int bigIconSize;
 163         // static needed by "New Window"
 164         static unsigned int lastIconSize;
 165
 166         QMenu * toolBarPopup(GuiView * parent)
 167         {
 168                 // FIXME: translation
 169                 QMenu * menu = new QMenu(parent);
 170                 QActionGroup * iconSizeGroup = new QActionGroup(parent);
 171
 172                 QAction * smallIcons = new QAction(iconSizeGroup);
 173                 smallIcons->setText(qt_("Small-sized icons"));
 174                 smallIcons->setCheckable(true);
 175                 QObject::connect(smallIcons, SIGNAL(triggered()), parent, SLOT(smallSizedIcons()));
 176                 menu->addAction(smallIcons);
 177
 178                 QAction * normalIcons = new QAction(iconSizeGroup);
 179                 normalIcons->setText(qt_("Normal-sized icons"));
 180                 normalIcons->setCheckable(true);
 181                 QObject::connect(normalIcons, SIGNAL(triggered()), parent, SLOT(normalSizedIcons()));
 182                 menu->addAction(normalIcons);
 183
 184                 QAction * bigIcons = new QAction(iconSizeGroup);
 185                 bigIcons->setText(qt_("Big-sized icons"));
 186                 bigIcons->setCheckable(true);
 187                 QObject::connect(bigIcons, SIGNAL(triggered()), parent, SLOT(bigSizedIcons()));
 188                 menu->addAction(bigIcons);
 189
 190                 unsigned int cur = parent->iconSize().width();
 191                 if ( cur == parent->d.smallIconSize)
 192                         smallIcons->setChecked(true);
 193                 else if (cur == parent->d.normalIconSize)
 194                         normalIcons->setChecked(true);
 195                 else if (cur == parent->d.bigIconSize)
 196                         bigIcons->setChecked(true);
 197
 198                 return menu;
 199         }
 200
 201         void initBackground()
 202         {
 203                 LYXERR(Debug::GUI) << "show banner: " << lyxrc.show_banner << endl;
 204                 /// The text to be written on top of the pixmap
 205                 QString const text = lyx_version ? QString(lyx_version) : qt_("unknown version");
 206                 bg_widget_ = new BackgroundWidget(":/images/banner.png", text);
 207         }
 208
 209         void setBackground()
 210         {
 211                 stack_widget_->setCurrentWidget(bg_widget_);
 212                 bg_widget_->setUpdatesEnabled(true);
 213         }
 214
 215         TabWorkArea * tabWorkArea(int i)
 216         {
 217                 return dynamic_cast<TabWorkArea *>(splitter_->widget(i));
 218         }
 219
 220         TabWorkArea * currentTabWorkArea()
 221         {
 222                 if (splitter_->count() == 1)
 223                         // The first TabWorkArea is always the first one, if any.
 224                         return tabWorkArea(0);
 225
 226                 TabWorkArea * tab_widget = 0;
 227                 for (int i = 0; i != splitter_->count(); ++i) {
 228                         QWidget * w = splitter_->widget(i);
 229                         if (!w->hasFocus())
 230                                 continue;
 231                         tab_widget = dynamic_cast<TabWorkArea *>(w);
 232                         if (tab_widget)
 233                                 break;
 234                 }
 235
 236                 return tab_widget;
 237         }
 238 };
 239
 240
 241 unsigned int GuiView::GuiViewPrivate::lastIconSize = 0;
 242
 243
 244 GuiView::GuiView(int id)
 245         : QMainWindow(), LyXView(id), quitting_by_menu_(false),
 246           d(*new GuiViewPrivate)
 247 {
 248         // Qt bug? signal lastWindowClosed does not work
 249         setAttribute(Qt::WA_QuitOnClose, false);
 250         setAttribute(Qt::WA_DeleteOnClose, true);
 251
 252         // hardcode here the platform specific icon size
 253         d.smallIconSize = 14;   // scaling problems
 254         d.normalIconSize = 20;  // ok, default
 255         d.bigIconSize = 26;             // better for some math icons
 256
 257 #ifndef Q_WS_MACX
 258         // assign an icon to main form. We do not do it under Qt/Mac,
 259         // since the icon is provided in the application bundle.
 260         setWindowIcon(QPixmap(":/images/lyx.png"));
 261 #endif
 262
 263
 264         d.splitter_ = new QSplitter;
 265
 266         d.initBackground();
 267         LYXERR(Debug::GUI) << "stack widget!" << endl;
 268         d.stack_widget_ = new QStackedWidget;
 269         d.stack_widget_->addWidget(d.bg_widget_);
 270         d.stack_widget_->addWidget(d.splitter_);
 271         setCentralWidget(d.stack_widget_);
 272
 273         // For Drag&Drop.
 274         setAcceptDrops(true);
 275 }
 276
 277
 278 GuiView::~GuiView()
 279 {
 280         delete &d;
 281 }
 282
 283
 284 void GuiView::close()
 285 {
 286         quitting_by_menu_ = true;
 287         d.current_work_area_ = 0;
 288         for (int i = 0; i != d.splitter_->count(); ++i) {
 289                 TabWorkArea * twa = d.tabWorkArea(i);
 290                 if (twa)
 291                         twa->closeAll();
 292         }
 293         QMainWindow::close();
 294         quitting_by_menu_ = false;
 295 }
 296
 297
 298 void GuiView::setFocus()
 299 {
 300         if (d.current_work_area_)
 301                 d.current_work_area_->setFocus();
 302         else
 303                 QWidget::setFocus();
 304 }
 305
 306
 307 QMenu* GuiView::createPopupMenu()
 308 {
 309         return d.toolBarPopup(this);
 310 }
 311
 312
 313 void GuiView::init()
 314 {
 315         // GuiToolbars *must* be initialised before GuiMenubar.
 316         d.toolbars_ = new GuiToolbars(*this);
 317         // FIXME: GuiToolbars::init() cannot be integrated in the ctor
 318         // because LyXFunc::getStatus() needs a properly initialized
 319         // GuiToolbars object (for LFUN_TOOLBAR_TOGGLE).
 320         d.toolbars_->init();
 321         d.menubar_ = new GuiMenubar(this, menubackend);
 322
 323         statusBar()->setSizeGripEnabled(true);
 324
 325         QObject::connect(&statusbar_timer_, SIGNAL(timeout()),
 326                 this, SLOT(update_view_state_qt()));
 327
 328         d.setBackground();
 329 }
 330
 331
 332 void GuiView::closeEvent(QCloseEvent * close_event)
 333 {
 334         // we may have been called through the close window button
 335         // which bypasses the LFUN machinery.
 336         if (!quitting_by_menu_ && theApp()->gui().viewIds().size() == 1) {
 337                 if (!theBufferList().quitWriteAll()) {
 338                         close_event->ignore();
 339                         return;
 340                 }
 341         }
 342
 343         // Make sure that no LFUN use this close to be closed View.
 344         theLyXFunc().setLyXView(0);
 345         // Make sure the timer time out will not trigger a statusbar update.
 346         statusbar_timer_.stop();
 347
 348         theApp()->gui().unregisterView(id());
 349         if (!theApp()->gui().viewIds().empty()) {
 350                 // Just close the window and do nothing else if this is not the
 351                 // last window.
 352                 close_event->accept();
 353                 return;
 354         }
 355
 356         quitting = true;
 357
 358         // this is the place where we leave the frontend.
 359         // it is the only point at which we start quitting.
 360         saveGeometry();
 361         close_event->accept();
 362         // quit the event loop
 363         qApp->quit();
 364 }
 365
 366
 367 void GuiView::dragEnterEvent(QDragEnterEvent * event)
 368 {
 369         if (event->mimeData()->hasUrls())
 370                 event->accept();
 371         /// \todo Ask lyx-devel is this is enough:
 372         /// if (event->mimeData()->hasFormat("text/plain"))
 373         ///     event->acceptProposedAction();
 374 }
 375
 376
 377 void GuiView::dropEvent(QDropEvent* event)
 378 {
 379         QList<QUrl> files = event->mimeData()->urls();
 380         if (files.isEmpty())
 381                 return;
 382
 383         LYXERR(Debug::GUI) << BOOST_CURRENT_FUNCTION
 384                 << " got URLs!" << endl;
 385         for (int i = 0; i != files.size(); ++i) {
 386                 string const file = support::os::internal_path(fromqstr(
 387                         files.at(i).toLocalFile()));
 388                 if (!file.empty())
 389                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
 390         }
 391 }
 392
 393
 394 void GuiView::saveGeometry()
 395 {
 396         static bool done = false;
 397         if (done)
 398                 return;
 399         else
 400                 done = true;
 401
 402         // FIXME:
 403         // change the ifdef to 'geometry = normalGeometry();' only
 404         // when Trolltech has fixed the broken normalGeometry on X11:
 405         // http://www.trolltech.com/developer/task-tracker/index_html?id=119684+&method=entry
 406         // Then also the moveEvent, resizeEvent, and the
 407         // code for floatingGeometry_ can be removed;
 408         // adjust GuiView::setGeometry()
 409
 410         QRect normal_geometry;
 411         int maximized;
 412 #ifdef Q_WS_WIN
 413         normal_geometry = normalGeometry();
 414         if (isMaximized()) {
 415                 maximized = CompletelyMaximized;
 416         } else {
 417                 maximized = NotMaximized;
 418         }
 419 #else
 420         normal_geometry = updateFloatingGeometry();
 421
 422         QDesktopWidget& dw = *qApp->desktop();
 423         QRect desk = dw.availableGeometry(dw.primaryScreen());
 424         // Qt bug on Linux: load completely maximized, vert max. save-> frameGeometry().height() is wrong
 425         if (isMaximized() && desk.width() <= frameGeometry().width() && desk.height() <= frameGeometry().height()) {
 426                 maximized = CompletelyMaximized;
 427                 // maximizing does not work when the window is allready hor. or vert. maximized
 428                 // Tested only on KDE
 429                 int dh = frameGeometry().height() - height();
 430                 if (desk.height() <= normal_geometry.height() + dh)
 431                         normal_geometry.setHeight(normal_geometry.height() - 1);
 432                 int dw = frameGeometry().width() - width();
 433                 if (desk.width() <= normal_geometry.width() + dw)
 434                         normal_geometry.setWidth(normal_geometry.width() - 1);
 435         } else if (desk.height() <= frameGeometry().height()) {
 436                 maximized = VerticallyMaximized;
 437         } else if (desk.width() <= frameGeometry().width()) {
 438                 maximized = HorizontallyMaximized;
 439         } else {
 440                 maximized = NotMaximized;
 441         }
 442
 443
 444 #endif
 445         // save windows size and position
 446         Session & session = LyX::ref().session();
 447         session.sessionInfo().save("WindowWidth", convert<string>(normal_geometry.width()));
 448         session.sessionInfo().save("WindowHeight", convert<string>(normal_geometry.height()));
 449         session.sessionInfo().save("WindowMaximized", convert<string>(maximized));
 450         session.sessionInfo().save("IconSizeXY", convert<string>(iconSize().width()));
 451         if (lyxrc.geometry_xysaved) {
 452                 session.sessionInfo().save("WindowPosX", convert<string>(normal_geometry.x() + d.posx_offset));
 453                 session.sessionInfo().save("WindowPosY", convert<string>(normal_geometry.y() + d.posy_offset));
 454         }
 455         d.toolbars_->saveToolbarInfo();
 456 }
 457
 458
 459 void GuiView::setGeometry(unsigned int width,
 460                           unsigned int height,
 461                           int posx, int posy,
 462                           int maximized,
 463                           unsigned int iconSizeXY,
 464                           const string & geometryArg)
 465 {
 466         // use last value (not at startup)
 467         if (d.lastIconSize != 0)
 468                 setIconSize(d.lastIconSize);
 469         else if (iconSizeXY != 0)
 470                 setIconSize(iconSizeXY);
 471         else
 472                 setIconSize(d.normalIconSize);
 473
 474         // only true when the -geometry option was NOT used
 475         if (width != 0 && height != 0) {
 476                 if (posx != -1 && posy != -1) {
 477                         // if there are startup positioning problems:
 478                         // http://doc.trolltech.com/4.2/qdesktopwidget.html
 479                         QDesktopWidget& dw = *qApp->desktop();
 480                         if (dw.isVirtualDesktop()) {
 481                                 if(!dw.geometry().contains(posx, posy)) {
 482                                         posx = 50;
 483                                         posy = 50;
 484                                 }
 485                         } else {
 486                                 // Which system doesn't use a virtual desktop?
 487                                 // TODO save also last screen number and check if it is still availabe.
 488                         }
 489 #ifdef Q_WS_WIN
 490                         // FIXME: use setGeometry only when Trolltech has fixed the qt4/X11 bug
 491                         QWidget::setGeometry(posx, posy, width, height);
 492 #else
 493                         resize(width, height);
 494                         move(posx, posy);
 495 #endif
 496                 } else {
 497                         resize(width, height);
 498                 }
 499
 500                 // remember original size
 501                 floatingGeometry_ = QRect(posx, posy, width, height);
 502
 503                 if (maximized != NotMaximized) {
 504                         if (maximized == CompletelyMaximized) {
 505                                 setWindowState(Qt::WindowMaximized);
 506                         } else {
 507 #ifndef Q_WS_WIN
 508                                 // TODO How to set by the window manager?
 509                                 //      setWindowState(Qt::WindowVerticallyMaximized);
 510                                 //      is not possible
 511                                 QDesktopWidget& dw = *qApp->desktop();
 512                                 QRect desk = dw.availableGeometry(dw.primaryScreen());
 513                                 if (maximized == VerticallyMaximized)
 514                                         resize(width, desk.height());
 515                                 if (maximized == HorizontallyMaximized)
 516                                         resize(desk.width(), height);
 517 #endif
 518                         }
 519                 }
 520         }
 521         else
 522         {
 523                 // FIXME: move this code into parse_geometry() (LyX.cpp)
 524 #ifdef Q_WS_WIN
 525                 int x, y;
 526                 int w, h;
 527                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 528                 re.indexIn(toqstr(geometryArg.c_str()));
 529                 w = re.cap(1).toInt();
 530                 h = re.cap(2).toInt();
 531                 x = re.cap(3).toInt();
 532                 y = re.cap(4).toInt();
 533                 QWidget::setGeometry( x, y, w, h );
 534 #else
 535                 // silence warning
 536                 (void)geometryArg;
 537 #endif
 538         }
 539
 540         d.setBackground();
 541
 542         show();
 543
 544         // For an unknown reason, the Window title update is not effective for
 545         // the second windows up until it is shown on screen (Qt bug?).
 546         updateWindowTitle();
 547
 548         // after show geometry() has changed (Qt bug?)
 549         // we compensate the drift when storing the position
 550         d.posx_offset = 0;
 551         d.posy_offset = 0;
 552         if (width != 0 && height != 0)
 553                 if (posx != -1 && posy != -1) {
 554 #ifdef Q_WS_WIN
 555                         d.posx_offset = posx - normalGeometry().x();
 556                         d.posy_offset = posy - normalGeometry().y();
 557 #else
 558 #ifndef Q_WS_MACX
 559                         if (maximized == NotMaximized) {
 560                                 d.posx_offset = posx - geometry().x();
 561                                 d.posy_offset = posy - geometry().y();
 562                         }
 563 #endif
 564 #endif
 565                 }
 566 }
 567
 568
 569 void GuiView::setWindowTitle(docstring const & t, docstring const & it)
 570 {
 571         QString title = windowTitle();
 572         QString new_title = toqstr(t);
 573         if (title != new_title) {
 574                 QMainWindow::setWindowTitle(new_title);
 575                 QMainWindow::setWindowIconText(toqstr(it));
 576         }
 577         if (Buffer const * buf = buffer()) {
 578                 QString tabtext = toqstr(buf->fileName().displayName(30));
 579                 d.current_work_area_->setWindowTitle(tabtext);
 580                 TabWorkArea * twa = d.currentTabWorkArea();
 581                 twa->setTabText(twa->currentIndex(), tabtext);
 582         }
 583 }
 584
 585
 586 void GuiView::message(docstring const & str)
 587 {
 588         statusBar()->showMessage(toqstr(str));
 589         statusbar_timer_.stop();
 590         statusbar_timer_.start(statusbar_timer_value);
 591 }
 592
 593
 594 void GuiView::clearMessage()
 595 {
 596         update_view_state_qt();
 597 }
 598
 599
 600 void GuiView::setIconSize(unsigned int size)
 601 {
 602         d.lastIconSize = size;
 603         QMainWindow::setIconSize(QSize(size, size));
 604 }
 605
 606
 607 void GuiView::smallSizedIcons()
 608 {
 609         setIconSize(d.smallIconSize);
 610 }
 611
 612
 613 void GuiView::normalSizedIcons()
 614 {
 615         setIconSize(d.normalIconSize);
 616 }
 617
 618
 619 void GuiView::bigSizedIcons()
 620 {
 621         setIconSize(d.bigIconSize);
 622 }
 623
 624
 625 void GuiView::update_view_state_qt()
 626 {
 627         if (!hasFocus())
 628                 return;
 629         theLyXFunc().setLyXView(this);
 630         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 631         statusbar_timer_.stop();
 632 }
 633
 634
 635 void GuiView::on_currentWorkAreaChanged(GuiWorkArea * wa)
 636 {
 637         disconnectBuffer();
 638         disconnectBufferView();
 639         connectBufferView(wa->bufferView());
 640         connectBuffer(wa->bufferView().buffer());
 641
 642         updateToc();
 643         // Buffer-dependent dialogs should be updated or
 644         // hidden. This should go here because some dialogs (eg ToC)
 645         // require bv_->text.
 646         getDialogs().updateBufferDependent(true);
 647         updateToolbars();
 648         updateLayoutChoice(false);
 649         updateWindowTitle();
 650         updateStatusBar();
 651 }
 652
 653
 654 void GuiView::updateStatusBar()
 655 {
 656         // let the user see the explicit message
 657         if (statusbar_timer_.isActive())
 658                 return;
 659
 660         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 661 }
 662
 663
 664 void GuiView::activated(FuncRequest const & func)
 665 {
 666         dispatch(func);
 667 }
 668
 669
 670 bool GuiView::hasFocus() const
 671 {
 672         return qApp->activeWindow() == this;
 673 }
 674
 675
 676 QRect  GuiView::updateFloatingGeometry()
 677 {
 678         QDesktopWidget& dw = *qApp->desktop();
 679         QRect desk = dw.availableGeometry(dw.primaryScreen());
 680         // remember only non-maximized sizes
 681         if (!isMaximized() && desk.width() > frameGeometry().width() && desk.height() > frameGeometry().height()) {
 682                 floatingGeometry_ = QRect(x(), y(), width(), height());
 683         }
 684         return floatingGeometry_;
 685 }
 686
 687
 688 void GuiView::resizeEvent(QResizeEvent *)
 689 {
 690         updateFloatingGeometry();
 691 }
 692
 693
 694 void GuiView::moveEvent(QMoveEvent *)
 695 {
 696         updateFloatingGeometry();
 697 }
 698
 699
 700 bool GuiView::event(QEvent * e)
 701 {
 702         switch (e->type())
 703         {
 704         // Useful debug code:
 705         //case QEvent::ActivationChange:
 706         //case QEvent::WindowDeactivate:
 707         //case QEvent::Paint:
 708         //case QEvent::Enter:
 709         //case QEvent::Leave:
 710         //case QEvent::HoverEnter:
 711         //case QEvent::HoverLeave:
 712         //case QEvent::HoverMove:
 713         //case QEvent::StatusTip:
 714         //case QEvent::DragEnter:
 715         //case QEvent::DragLeave:
 716         //case QEvent::Drop:
 717         //      break;
 718
 719         case QEvent::WindowActivate: {
 720                 theApp()->setCurrentView(*this);
 721                 if (d.current_work_area_) {
 722                         BufferView & bv = d.current_work_area_->bufferView();
 723                         connectBufferView(bv);
 724                         connectBuffer(bv.buffer());
 725                         // The document structure, name and dialogs might have
 726                         // changed in another view.
 727                         updateWindowTitle();
 728                         getDialogs().updateBufferDependent(true);
 729                 }
 730                 return QMainWindow::event(e);
 731         }
 732         case QEvent::ShortcutOverride: {
 733                 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 734                 if (!d.current_work_area_) {
 735                         theLyXFunc().setLyXView(this);
 736                         KeySymbol sym;
 737                         setKeySymbol(&sym, ke);
 738                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 739                         e->accept();
 740                         return true;
 741                 }
 742                 if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
 743                         KeySymbol sym;
 744                         setKeySymbol(&sym, ke);
 745                         d.current_work_area_->processKeySym(sym, NoModifier);
 746                         e->accept();
 747                         return true;
 748                 }
 749         }
 750         default:
 751                 return QMainWindow::event(e);
 752         }
 753 }
 754
 755
 756 bool GuiView::focusNextPrevChild(bool /*next*/)
 757 {
 758         setFocus();
 759         return true;
 760 }
 761
 762
 763 void GuiView::showView()
 764 {
 765         QMainWindow::setWindowTitle(qt_("LyX"));
 766         QMainWindow::show();
 767         updateFloatingGeometry();
 768 }
 769
 770
 771 void GuiView::setBusy(bool yes)
 772 {
 773         if (d.current_work_area_) {
 774                 d.current_work_area_->setUpdatesEnabled(!yes);
 775                 if (yes)
 776                         d.current_work_area_->stopBlinkingCursor();
 777                 else
 778                         d.current_work_area_->startBlinkingCursor();
 779         }
 780
 781         if (yes)
 782                 QApplication::setOverrideCursor(Qt::WaitCursor);
 783         else
 784                 QApplication::restoreOverrideCursor();
 785 }
 786
 787
 788 GuiToolbar * GuiView::makeToolbar(ToolbarInfo const & tbinfo, bool newline)
 789 {
 790         GuiToolbar * toolBar = new GuiToolbar(tbinfo, *this);
 791
 792         if (tbinfo.flags & ToolbarInfo::TOP) {
 793                 if (newline)
 794                         addToolBarBreak(Qt::TopToolBarArea);
 795                 addToolBar(Qt::TopToolBarArea, toolBar);
 796         }
 797
 798         if (tbinfo.flags & ToolbarInfo::BOTTOM) {
 799 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 800 #if (QT_VERSION >= 0x040202)
 801                 if (newline)
 802                         addToolBarBreak(Qt::BottomToolBarArea);
 803 #endif
 804                 addToolBar(Qt::BottomToolBarArea, toolBar);
 805         }
 806
 807         if (tbinfo.flags & ToolbarInfo::LEFT) {
 808 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 809 #if (QT_VERSION >= 0x040202)
 810                 if (newline)
 811                         addToolBarBreak(Qt::LeftToolBarArea);
 812 #endif
 813                 addToolBar(Qt::LeftToolBarArea, toolBar);
 814         }
 815
 816         if (tbinfo.flags & ToolbarInfo::RIGHT) {
 817 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 818 #if (QT_VERSION >= 0x040202)
 819                 if (newline)
 820                         addToolBarBreak(Qt::RightToolBarArea);
 821 #endif
 822                 addToolBar(Qt::RightToolBarArea, toolBar);
 823         }
 824
 825         // The following does not work so I cannot restore to exact toolbar location
 826         /*
 827         ToolbarSection::ToolbarInfo & tbinfo = LyX::ref().session().toolbars().load(tbinfo.name);
 828         toolBar->move(tbinfo.posx, tbinfo.posy);
 829         */
 830
 831         return toolBar;
 832 }
 833
 834
 835 WorkArea * GuiView::workArea(Buffer & buffer)
 836 {
 837         for (int i = 0; i != d.splitter_->count(); ++i) {
 838                 GuiWorkArea * wa = d.tabWorkArea(i)->workArea(buffer);
 839                 if (wa)
 840                         return wa;
 841         }
 842         return 0;
 843 }
 844
 845
 846 WorkArea * GuiView::addWorkArea(Buffer & buffer)
 847 {
 848         GuiWorkArea * wa = new GuiWorkArea(buffer, *this);
 849         wa->setUpdatesEnabled(false);
 850
 851         // Automatically create a TabWorkArea if there are none yet.
 852         if (!d.splitter_->count())
 853                 addTabWorkArea();
 854
 855         TabWorkArea * tab_widget = d.currentTabWorkArea();
 856         tab_widget->addTab(wa, toqstr(buffer.fileName().displayName(30)));
 857         wa->bufferView().updateMetrics();
 858
 859         // Hide tabbar if there's only one tab.
 860         tab_widget->showBar(tab_widget->count() > 1);
 861         return wa;
 862 }
 863
 864
 865 void GuiView::addTabWorkArea()
 866 {
 867         TabWorkArea * twa = new TabWorkArea;
 868         QObject::connect(twa, SIGNAL(currentWorkAreaChanged(GuiWorkArea *)),
 869                 this, SLOT(on_currentWorkAreaChanged(GuiWorkArea *)));
 870         d.splitter_->addWidget(twa);
 871         d.stack_widget_->setCurrentWidget(d.splitter_);
 872 }
 873
 874
 875 WorkArea * GuiView::currentWorkArea()
 876 {
 877         return d.current_work_area_;
 878 }
 879
 880
 881 WorkArea const * GuiView::currentWorkArea() const
 882 {
 883         return d.current_work_area_;
 884 }
 885
 886
 887 void GuiView::setCurrentWorkArea(WorkArea * work_area)
 888 {
 889         BOOST_ASSERT(work_area);
 890
 891         // Changing work area can result from opening a file so
 892         // update the toc in any case.
 893         updateToc();
 894
 895         GuiWorkArea * wa = static_cast<GuiWorkArea *>(work_area);
 896         d.current_work_area_ = wa;
 897         for (int i = 0; i != d.splitter_->count(); ++i) {
 898                 if (d.tabWorkArea(i)->setCurrentWorkArea(wa))
 899                         return;
 900         }
 901 }
 902
 903
 904 void GuiView::removeWorkArea(WorkArea * work_area)
 905 {
 906         BOOST_ASSERT(work_area);
 907         GuiWorkArea * gwa = static_cast<GuiWorkArea *>(work_area);
 908         if (gwa == d.current_work_area_) {
 909                 disconnectBuffer();
 910                 disconnectBufferView();
 911                 getDialogs().hideBufferDependent();
 912                 d.current_work_area_ = 0;
 913         }
 914
 915         // removing a work area often results from closing a file so
 916         // update the toc in any case.
 917         updateToc();
 918
 919         for (int i = 0; i != d.splitter_->count(); ++i) {
 920                 TabWorkArea * twa = d.tabWorkArea(i);
 921                 if (!twa->removeWorkArea(gwa))
 922                         // Not found in this tab group.
 923                         continue;
 924
 925                 // We found and removed the WorkArea.
 926                 if (twa->count()) {
 927                         // No more WorkAreas in this tab group, so delete it.
 928                         delete twa;
 929                         break;
 930                 }
 931
 932                 if (d.current_work_area_)
 933                         // This means that we are not closing the current WorkArea;
 934                         break;
 935
 936                 // Switch to the next WorkArea in the found TabWorkArea.
 937                 d.current_work_area_ = twa->currentWorkArea();
 938                 break;
 939         }
 940
 941         if (d.splitter_->count() == 0)
 942                 // No more work area, switch to the background widget.
 943                 d.setBackground();
 944 }
 945
 946
 947 void GuiView::showMiniBuffer(bool visible)
 948 {
 949         d.toolbars_->showCommandBuffer(visible);
 950 }
 951
 952
 953 void GuiView::openMenu(docstring const & name)
 954 {
 955         d.menubar_->openByName(toqstr(name));
 956 }
 957
 958
 959 void GuiView::openLayoutList()
 960 {
 961         d.toolbars_->openLayoutList();
 962 }
 963
 964
 965 void GuiView::updateLayoutChoice(bool force)
 966 {
 967         // Don't show any layouts without a buffer
 968         if (!buffer()) {
 969                 d.toolbars_->clearLayoutList();
 970                 return;
 971         }
 972
 973         // Update the layout display
 974         if (d.toolbars_->updateLayoutList(buffer()->params().getTextClassPtr(), force)) {
 975                 d.current_layout = buffer()->params().getTextClass().defaultLayoutName();
 976         }
 977
 978         docstring const & layout = d.current_work_area_->bufferView().cursor().
 979                 innerParagraph().layout()->name();
 980
 981         if (layout != d.current_layout) {
 982                 d.toolbars_->setLayout(layout);
 983                 d.current_layout = layout;
 984         }
 985 }
 986
 987
 988 bool GuiView::isToolbarVisible(std::string const & id)
 989 {
 990         return d.toolbars_->visible(id);
 991 }
 992
 993 void GuiView::updateToolbars()
 994 {
 995         if (d.current_work_area_) {
 996                 bool const math =
 997                         d.current_work_area_->bufferView().cursor().inMathed();
 998                 bool const table =
 999                         lyx::getStatus(FuncRequest(LFUN_LAYOUT_TABULAR)).enabled();
1000                 bool const review =
1001                         lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).enabled() &&
1002                         lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).onoff(true);
1003
1004                 d.toolbars_->update(math, table, review);
1005         } else
1006                 d.toolbars_->update(false, false, false);
1007
1008         // update read-only status of open dialogs.
1009         getDialogs().checkStatus();
1010 }
1011
1012
1013 ToolbarInfo * GuiView::getToolbarInfo(string const & name)
1014 {
1015         return d.toolbars_->getToolbarInfo(name);
1016 }
1017
1018
1019 void GuiView::toggleToolbarState(string const & name, bool allowauto)
1020 {
1021         // it is possible to get current toolbar status like this,...
1022         // but I decide to obey the order of ToolbarBackend::flags
1023         // and disregard real toolbar status.
1024         // toolbars_->saveToolbarInfo();
1025         //
1026         // toggle state on/off/auto
1027         d.toolbars_->toggleToolbarState(name, allowauto);
1028         // update toolbar
1029         updateToolbars();
1030 }
1031
1032
1033 } // namespace frontend
1034 } // namespace lyx
1035
1036 #include "GuiView_moc.cpp"