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 "QKeySymbol.h"
  21 #include "QLMenubar.h"
  22 #include "QLToolbar.h"
  23 #include "QCommandBuffer.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 "BufferView.h"
  38 #include "BufferList.h"
  39 #include "callback.h"
  40 #include "debug.h"
  41 #include "FuncRequest.h"
  42 #include "LyX.h"
  43 #include "LyXFunc.h"
  44 #include "LyXRC.h"
  45 #include "MenuBackend.h"
  46 #include "Session.h"
  47 #include "version.h"
  48
  49 #include <QAction>
  50 #include <QApplication>
  51 #include <QCloseEvent>
  52 #include <QDesktopWidget>
  53 #include <QDragEnterEvent>
  54 #include <QDropEvent>
  55 #include <QList>
  56 #include <QMimeData>
  57 #include <QPainter>
  58 #include <QPixmap>
  59 #include <QPushButton>
  60 #include <QStackedWidget>
  61 #include <QStatusBar>
  62 #include <QToolBar>
  63 #include <QTabWidget>
  64 #include <QUrl>
  65
  66 #include <boost/bind.hpp>
  67 #include <boost/shared_ptr.hpp>
  68 #include <boost/current_function.hpp>
  69
  70 using std::endl;
  71 using std::string;
  72 using std::vector;
  73
  74 namespace lyx {
  75
  76 using support::FileName;
  77 using support::libFileSearch;
  78 using support::makeDisplayPath;
  79
  80 namespace frontend {
  81
  82 namespace {
  83
  84 int const statusbar_timer_value = 3000;
  85
  86 class BackgroundWidget: public QWidget
  87 {
  88 public:
  89         BackgroundWidget(QString const & file, QString const & text)
  90         {
  91                 splash_ = new QPixmap(file);
  92                 if (!splash_) {
  93                         lyxerr << "could not load splash screen: '" << fromqstr(file) << "'" << endl;
  94                         return;
  95                 }
  96
  97                 QPainter pain(splash_);
  98                 pain.setPen(QColor(255, 255, 0));
  99                 QFont font;
 100                 // The font used to display the version info
 101                 font.setStyleHint(QFont::SansSerif);
 102                 font.setWeight(QFont::Bold);
 103                 font.setPointSize(convert<int>(lyxrc.font_sizes[Font::SIZE_LARGE]));
 104                 pain.setFont(font);
 105                 pain.drawText(260, 270, text);
 106         }
 107
 108         void paintEvent(QPaintEvent * ev)
 109         {
 110                 if (!splash_)
 111                         return;
 112
 113                 int x = (width() - splash_->width()) / 2;
 114                 int y = (height() - splash_->height()) / 2;
 115                 QPainter pain(this);
 116                 pain.drawPixmap(x, y, *splash_);
 117         }
 118
 119 private:
 120         QPixmap * splash_;
 121 };
 122
 123
 124 class TabWidget: public QTabWidget {
 125 public:
 126         void showBar(bool show) { tabBar()->setVisible(show); }
 127 };
 128
 129
 130 } // namespace anon
 131
 132
 133 struct GuiView::GuiViewPrivate
 134 {
 135         string cur_title;
 136
 137         int posx_offset;
 138         int posy_offset;
 139
 140         TabWidget * tab_widget_;
 141         QStackedWidget * stack_widget_;
 142         BackgroundWidget * bg_widget_;
 143         /// view's menubar
 144         QLMenubar * menubar_;
 145
 146         GuiViewPrivate() : posx_offset(0), posy_offset(0)
 147         {}
 148
 149         unsigned int smallIconSize;
 150         unsigned int normalIconSize;
 151         unsigned int bigIconSize;
 152         // static needed by "New Window"
 153         static unsigned int lastIconSize;
 154
 155         QMenu* toolBarPopup(GuiView *parent)
 156         {
 157                 // FIXME: translation
 158                 QMenu* menu = new QMenu(parent);
 159                 QActionGroup *iconSizeGroup = new QActionGroup(parent);
 160
 161                 QAction *smallIcons = new QAction(iconSizeGroup);
 162                 smallIcons->setText(qt_("Small-sized icons"));
 163                 smallIcons->setCheckable(true);
 164                 QObject::connect(smallIcons, SIGNAL(triggered()), parent, SLOT(smallSizedIcons()));
 165                 menu->addAction(smallIcons);
 166
 167                 QAction *normalIcons = new QAction(iconSizeGroup);
 168                 normalIcons->setText(qt_("Normal-sized icons"));
 169                 normalIcons->setCheckable(true);
 170                 QObject::connect(normalIcons, SIGNAL(triggered()), parent, SLOT(normalSizedIcons()));
 171                 menu->addAction(normalIcons);
 172
 173                 QAction *bigIcons = new QAction(iconSizeGroup);
 174                 bigIcons->setText(qt_("Big-sized icons"));
 175                 bigIcons->setCheckable(true);
 176                 QObject::connect(bigIcons, SIGNAL(triggered()), parent, SLOT(bigSizedIcons()));
 177                 menu->addAction(bigIcons);
 178
 179                 unsigned int cur = parent->iconSize().width();
 180                 if ( cur == parent->d.smallIconSize)
 181                         smallIcons->setChecked(true);
 182                 else if (cur == parent->d.normalIconSize)
 183                         normalIcons->setChecked(true);
 184                 else if (cur == parent->d.bigIconSize)
 185                         bigIcons->setChecked(true);
 186
 187                 return menu;
 188         }
 189
 190         void initBackground()
 191         {
 192                 bg_widget_ = 0;
 193                 LYXERR(Debug::GUI) << "show banner: " << lyxrc.show_banner << endl;
 194                 /// The text to be written on top of the pixmap
 195                 QString const text = lyx_version ? QString(lyx_version) : qt_("unknown version");
 196                 FileName const file = support::libFileSearch("images", "banner", "png");
 197                 if (file.empty())
 198                         return;
 199
 200                 bg_widget_ = new BackgroundWidget(toqstr(file.absFilename()), text);
 201         }
 202
 203         void setBackground()
 204         {
 205                 if (!bg_widget_)
 206                         return;
 207
 208                 stack_widget_->setCurrentWidget(bg_widget_);
 209                 bg_widget_->setUpdatesEnabled(true);
 210         }
 211 };
 212
 213
 214 unsigned int GuiView::GuiViewPrivate::lastIconSize = 0;
 215
 216
 217 GuiView::GuiView(int id)
 218         : QMainWindow(), LyXView(id), commandbuffer_(0), quitting_by_menu_(false),
 219           d(*new GuiViewPrivate)
 220 {
 221         // Qt bug? signal lastWindowClosed does not work
 222         setAttribute(Qt::WA_QuitOnClose, false);
 223         setAttribute(Qt::WA_DeleteOnClose, true);
 224
 225         // hardcode here the platform specific icon size
 226         d.smallIconSize = 14;   // scaling problems
 227         d.normalIconSize = 20;  // ok, default
 228         d.bigIconSize = 26;             // better for some math icons
 229
 230 #ifndef Q_WS_MACX
 231         //  assign an icon to main form. We do not do it under Qt/Mac,
 232         //  since the icon is provided in the application bundle.
 233         FileName const iconname = libFileSearch("images", "lyx", "xpm");
 234         if (!iconname.empty())
 235                 setWindowIcon(QPixmap(toqstr(iconname.absFilename())));
 236 #endif
 237
 238         d.tab_widget_ = new TabWidget;
 239
 240         QPushButton * closeTabButton = new QPushButton(this);
 241         FileName const file = support::libFileSearch("images", "closetab", "xpm");
 242         if (!file.empty()) {
 243                 QPixmap pm(toqstr(file.absFilename()));
 244                 closeTabButton->setIcon(QIcon(pm));
 245                 closeTabButton->setMaximumSize(pm.size());
 246                 closeTabButton->setFlat(true);
 247         } else {
 248                 closeTabButton->setText("Close");
 249         }
 250         closeTabButton->setCursor(Qt::ArrowCursor);
 251         closeTabButton->setToolTip(tr("Close tab"));
 252         closeTabButton->setEnabled(true);
 253
 254         QObject::connect(d.tab_widget_, SIGNAL(currentChanged(int)),
 255                         this, SLOT(currentTabChanged(int)));
 256         QObject::connect(closeTabButton, SIGNAL(clicked()),
 257                         this, SLOT(closeCurrentTab()));
 258
 259         d.tab_widget_->setCornerWidget(closeTabButton);
 260 #if QT_VERSION >= 0x040200
 261         d.tab_widget_->setUsesScrollButtons(true);
 262 #endif
 263
 264         d.initBackground();
 265         if (d.bg_widget_) {
 266                 lyxerr << "stack widget!" << endl;
 267                 d.stack_widget_ = new QStackedWidget;
 268                 d.stack_widget_->addWidget(d.bg_widget_);
 269                 d.stack_widget_->addWidget(d.tab_widget_);
 270                 setCentralWidget(d.stack_widget_);
 271         } else {
 272                 d.stack_widget_ = 0;
 273                 setCentralWidget(d.tab_widget_);
 274         }
 275
 276         // For Drag&Drop.
 277         setAcceptDrops(true);
 278 }
 279
 280
 281 GuiView::~GuiView()
 282 {
 283         delete d.menubar_;
 284         delete &d;
 285 }
 286
 287
 288 void GuiView::close()
 289 {
 290         quitting_by_menu_ = true;
 291         QMainWindow::close();
 292         quitting_by_menu_ = false;
 293 }
 294
 295
 296 void GuiView::setFocus()
 297 {
 298         if (d.tab_widget_->count())
 299                 d.tab_widget_->currentWidget()->setFocus();
 300 }
 301
 302
 303 QMenu* GuiView::createPopupMenu()
 304 {
 305         return d.toolBarPopup(this);
 306 }
 307
 308
 309 void GuiView::init()
 310 {
 311         d.menubar_ = new QLMenubar(this, menubackend);
 312
 313         toolbars_->init();
 314
 315         statusBar()->setSizeGripEnabled(true);
 316
 317         QObject::connect(&statusbar_timer_, SIGNAL(timeout()),
 318                 this, SLOT(update_view_state_qt()));
 319
 320         if (d.stack_widget_)
 321                 d.stack_widget_->setCurrentWidget(d.bg_widget_);
 322 }
 323
 324
 325 void GuiView::closeEvent(QCloseEvent * close_event)
 326 {
 327         // we may have been called through the close window button
 328         // which bypasses the LFUN machinery.
 329         if (!quitting_by_menu_ && theApp()->gui().viewIds().size() == 1) {
 330                 if (!theBufferList().quitWriteAll()) {
 331                         close_event->ignore();
 332                         return;
 333                 }
 334         }
 335
 336         // Make sure that no LFUN use this close to be closed View.
 337         theLyXFunc().setLyXView(0);
 338         // Make sure the timer time out will not trigger a statusbar update.
 339         statusbar_timer_.stop();
 340
 341         theApp()->gui().unregisterView(id());
 342         if (!theApp()->gui().viewIds().empty()) {
 343                 // Just close the window and do nothing else if this is not the
 344                 // last window.
 345                 close_event->accept();
 346                 return;
 347         }
 348
 349         quitting = true;
 350
 351         // this is the place where we leave the frontend.
 352         // it is the only point at which we start quitting.
 353         saveGeometry();
 354         close_event->accept();
 355         // quit the event loop
 356         qApp->quit();
 357 }
 358
 359
 360 void GuiView::dragEnterEvent(QDragEnterEvent * event)
 361 {
 362         if (event->mimeData()->hasUrls())
 363                 event->accept();
 364         /// \todo Ask lyx-devel is this is enough:
 365         /// if (event->mimeData()->hasFormat("text/plain"))
 366         ///     event->acceptProposedAction();
 367 }
 368
 369
 370 void GuiView::dropEvent(QDropEvent* event)
 371 {
 372         QList<QUrl> files = event->mimeData()->urls();
 373         if (files.isEmpty())
 374                 return;
 375
 376         LYXERR(Debug::GUI) << BOOST_CURRENT_FUNCTION
 377                 << " got URLs!" << endl;
 378         for (int i = 0; i!=files.size(); ++i) {
 379                 string const file = support::os::internal_path(fromqstr(
 380                         files.at(i).toLocalFile()));
 381                 if (!file.empty())
 382                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
 383         }
 384 }
 385
 386
 387 void GuiView::saveGeometry()
 388 {
 389         static bool done = false;
 390         if (done)
 391                 return;
 392         else
 393                 done = true;
 394
 395         // FIXME:
 396         // change the ifdef to 'geometry = normalGeometry();' only
 397         // when Trolltech has fixed the broken normalGeometry on X11:
 398         // http://www.trolltech.com/developer/task-tracker/index_html?id=119684+&method=entry
 399         // Then also the moveEvent, resizeEvent, and the
 400         // code for floatingGeometry_ can be removed;
 401         // adjust GuiView::setGeometry()
 402
 403         QRect normal_geometry;
 404         int maximized;
 405 #ifdef Q_WS_WIN
 406         normal_geometry = normalGeometry();
 407         if (isMaximized()) {
 408                 maximized = CompletelyMaximized;
 409         } else {
 410                 maximized = NotMaximized;
 411         }
 412 #else
 413         normal_geometry = updateFloatingGeometry();
 414
 415         QDesktopWidget& dw = *qApp->desktop();
 416         QRect desk = dw.availableGeometry(dw.primaryScreen());
 417         // Qt bug on Linux: load completely maximized, vert max. save-> frameGeometry().height() is wrong
 418         if (isMaximized() && desk.width() <= frameGeometry().width() && desk.height() <= frameGeometry().height()) {
 419                 maximized = CompletelyMaximized;
 420                 // maximizing does not work when the window is allready hor. or vert. maximized
 421                 // Tested only on KDE
 422                 int dh = frameGeometry().height() - height();
 423                 if (desk.height() <= normal_geometry.height() + dh)
 424                         normal_geometry.setHeight(normal_geometry.height() - 1);
 425                 int dw = frameGeometry().width() - width();
 426                 if (desk.width() <= normal_geometry.width() + dw)
 427                         normal_geometry.setWidth(normal_geometry.width() - 1);
 428         } else if (desk.height() <= frameGeometry().height()) {
 429                 maximized = VerticallyMaximized;
 430         } else if (desk.width() <= frameGeometry().width()) {
 431                 maximized = HorizontallyMaximized;
 432         } else {
 433                 maximized = NotMaximized;
 434         }
 435
 436
 437 #endif
 438         // save windows size and position
 439         Session & session = LyX::ref().session();
 440         session.sessionInfo().save("WindowWidth", convert<string>(normal_geometry.width()));
 441         session.sessionInfo().save("WindowHeight", convert<string>(normal_geometry.height()));
 442         session.sessionInfo().save("WindowMaximized", convert<string>(maximized));
 443         session.sessionInfo().save("IconSizeXY", convert<string>(iconSize().width()));
 444         if (lyxrc.geometry_xysaved) {
 445                 session.sessionInfo().save("WindowPosX", convert<string>(normal_geometry.x() + d.posx_offset));
 446                 session.sessionInfo().save("WindowPosY", convert<string>(normal_geometry.y() + d.posy_offset));
 447         }
 448         toolbars_->saveToolbarInfo();
 449 }
 450
 451
 452 void GuiView::setGeometry(unsigned int width,
 453                           unsigned int height,
 454                           int posx, int posy,
 455                           int maximized,
 456                           unsigned int iconSizeXY,
 457                           const string & geometryArg)
 458 {
 459         // use last value (not at startup)
 460         if (d.lastIconSize != 0)
 461                 setIconSize(d.lastIconSize);
 462         else if (iconSizeXY != 0)
 463                 setIconSize(iconSizeXY);
 464         else
 465                 setIconSize(d.normalIconSize);
 466
 467         // only true when the -geometry option was NOT used
 468         if (width != 0 && height != 0) {
 469                 if (posx != -1 && posy != -1) {
 470                         // if there are startup positioning problems:
 471                         // http://doc.trolltech.com/4.2/qdesktopwidget.html
 472                         QDesktopWidget& dw = *qApp->desktop();
 473                         if (dw.isVirtualDesktop()) {
 474                                 if(!dw.geometry().contains(posx, posy)) {
 475                                         posx = 50;
 476                                         posy = 50;
 477                                 }
 478                         } else {
 479                                 // Which system doesn't use a virtual desktop?
 480                                 // TODO save also last screen number and check if it is still availabe.
 481                         }
 482 #ifdef Q_WS_WIN
 483                         // FIXME: use setGeometry only when Trolltech has fixed the qt4/X11 bug
 484                         QWidget::setGeometry(posx, posy, width, height);
 485 #else
 486                         resize(width, height);
 487                         move(posx, posy);
 488 #endif
 489                 } else {
 490                         resize(width, height);
 491                 }
 492
 493                 // remember original size
 494                 floatingGeometry_ = QRect(posx, posy, width, height);
 495
 496                 if (maximized != NotMaximized) {
 497                         if (maximized == CompletelyMaximized) {
 498                                 setWindowState(Qt::WindowMaximized);
 499                         } else {
 500 #ifndef Q_WS_WIN
 501                                 // TODO How to set by the window manager?
 502                                 //      setWindowState(Qt::WindowVerticallyMaximized);
 503                                 //      is not possible
 504                                 QDesktopWidget& dw = *qApp->desktop();
 505                                 QRect desk = dw.availableGeometry(dw.primaryScreen());
 506                                 if (maximized == VerticallyMaximized)
 507                                         resize(width, desk.height());
 508                                 if (maximized == HorizontallyMaximized)
 509                                         resize(desk.width(), height);
 510 #endif
 511                         }
 512                 }
 513         }
 514         else
 515         {
 516                 // FIXME: move this code into parse_geometry() (LyX.cpp)
 517 #ifdef Q_WS_WIN
 518                 int x, y;
 519                 int w, h;
 520                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 521                 re.indexIn(toqstr(geometryArg.c_str()));
 522                 w = re.cap(1).toInt();
 523                 h = re.cap(2).toInt();
 524                 x = re.cap(3).toInt();
 525                 y = re.cap(4).toInt();
 526                 QWidget::setGeometry( x, y, w, h );
 527 #else
 528                 // silence warning
 529                 (void)geometryArg;
 530 #endif
 531         }
 532
 533         d.setBackground();
 534
 535         show();
 536
 537         // For an unknown reason, the Window title update is not effective for
 538         // the second windows up until it is shown on screen (Qt bug?).
 539         updateWindowTitle();
 540
 541         // after show geometry() has changed (Qt bug?)
 542         // we compensate the drift when storing the position
 543         d.posx_offset = 0;
 544         d.posy_offset = 0;
 545         if (width != 0 && height != 0)
 546                 if (posx != -1 && posy != -1) {
 547 #ifdef Q_WS_WIN
 548                         d.posx_offset = posx - normalGeometry().x();
 549                         d.posy_offset = posy - normalGeometry().y();
 550 #else
 551 #ifndef Q_WS_MACX
 552                         if (maximized == NotMaximized) {
 553                                 d.posx_offset = posx - geometry().x();
 554                                 d.posy_offset = posy - geometry().y();
 555                         }
 556 #endif
 557 #endif
 558                 }
 559 }
 560
 561
 562 void GuiView::setWindowTitle(docstring const & t, docstring const & it)
 563 {
 564         QString title = windowTitle();
 565         QString new_title = toqstr(t);
 566         if (title != new_title) {
 567                 QMainWindow::setWindowTitle(new_title);
 568                 QMainWindow::setWindowIconText(toqstr(it));
 569         }
 570 }
 571
 572
 573 void GuiView::addCommandBuffer(QToolBar * toolbar)
 574 {
 575         commandbuffer_ = new QCommandBuffer(this, *controlcommand_);
 576         toolbar->addWidget(commandbuffer_);
 577 }
 578
 579
 580 void GuiView::message(docstring const & str)
 581 {
 582         statusBar()->showMessage(toqstr(str));
 583         statusbar_timer_.stop();
 584         statusbar_timer_.start(statusbar_timer_value);
 585 }
 586
 587
 588 void GuiView::clearMessage()
 589 {
 590         update_view_state_qt();
 591 }
 592
 593
 594 void GuiView::setIconSize(unsigned int size)
 595 {
 596         d.lastIconSize = size;
 597         QMainWindow::setIconSize(QSize(size, size));
 598 }
 599
 600
 601 void GuiView::smallSizedIcons()
 602 {
 603         setIconSize(d.smallIconSize);
 604 }
 605
 606
 607 void GuiView::normalSizedIcons()
 608 {
 609         setIconSize(d.normalIconSize);
 610 }
 611
 612
 613 void GuiView::bigSizedIcons()
 614 {
 615         setIconSize(d.bigIconSize);
 616 }
 617
 618
 619 void GuiView::update_view_state_qt()
 620 {
 621         if (!hasFocus())
 622                 return;
 623         theLyXFunc().setLyXView(this);
 624         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 625         statusbar_timer_.stop();
 626 }
 627
 628
 629 void GuiView::closeCurrentTab()
 630 {
 631         dispatch(FuncRequest(LFUN_BUFFER_CLOSE));
 632 }
 633
 634
 635 void GuiView::currentTabChanged(int i)
 636 {
 637         disconnectBuffer();
 638         disconnectBufferView();
 639         GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->widget(i));
 640         BOOST_ASSERT(wa);
 641         BufferView & bv = wa->bufferView();
 642         connectBufferView(bv);
 643         connectBuffer(bv.buffer());
 644         bv.updateMetrics(false);
 645         bv.cursor().fixIfBroken();
 646         wa->setUpdatesEnabled(true);
 647         wa->redraw();
 648         wa->setFocus();
 649
 650         updateToc();
 651         // Buffer-dependent dialogs should be updated or
 652         // hidden. This should go here because some dialogs (eg ToC)
 653         // require bv_->text.
 654         getDialogs().updateBufferDependent(true);
 655         updateToolbars();
 656         updateLayoutChoice();
 657         updateWindowTitle();
 658         updateStatusBar();
 659
 660         lyxerr << "currentTabChanged " << i
 661                 << "File" << bv.buffer().fileName() << endl;
 662 }
 663
 664
 665 void GuiView::updateStatusBar()
 666 {
 667         // let the user see the explicit message
 668         if (statusbar_timer_.isActive())
 669                 return;
 670
 671         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 672 }
 673
 674
 675 void GuiView::activated(FuncRequest const & func)
 676 {
 677         dispatch(func);
 678 }
 679
 680
 681 bool GuiView::hasFocus() const
 682 {
 683         return qApp->activeWindow() == this;
 684 }
 685
 686
 687 QRect  GuiView::updateFloatingGeometry()
 688 {
 689         QDesktopWidget& dw = *qApp->desktop();
 690         QRect desk = dw.availableGeometry(dw.primaryScreen());
 691         // remember only non-maximized sizes
 692         if (!isMaximized() && desk.width() > frameGeometry().width() && desk.height() > frameGeometry().height()) {
 693                 floatingGeometry_ = QRect(x(), y(), width(), height());
 694         }
 695         return floatingGeometry_;
 696 }
 697
 698
 699 void GuiView::resizeEvent(QResizeEvent *)
 700 {
 701         updateFloatingGeometry();
 702 }
 703
 704
 705 void GuiView::moveEvent(QMoveEvent *)
 706 {
 707         updateFloatingGeometry();
 708 }
 709
 710
 711 bool GuiView::event(QEvent * e)
 712 {
 713         switch (e->type())
 714         {
 715         // Useful debug code:
 716         //case QEvent::WindowActivate:
 717         //case QEvent::ActivationChange:
 718         //case QEvent::WindowDeactivate:
 719         //case QEvent::Paint:
 720         //case QEvent::Enter:
 721         //case QEvent::Leave:
 722         //case QEvent::HoverEnter:
 723         //case QEvent::HoverLeave:
 724         //case QEvent::HoverMove:
 725         //case QEvent::StatusTip:
 726         //case QEvent::DragEnter:
 727         //case QEvent::DragLeave:
 728         //case QEvent::Drop:
 729         //      break;
 730
 731         case QEvent::ShortcutOverride: {
 732                 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 733                 if (d.tab_widget_->count() == 0) {
 734                         theLyXFunc().setLyXView(this);
 735                         boost::shared_ptr<QKeySymbol> sym(new QKeySymbol);
 736                         sym->set(ke);
 737                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 738                         e->accept();
 739                         return true;
 740                 }
 741                 if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
 742                         boost::shared_ptr<QKeySymbol> sym(new QKeySymbol);
 743                         sym->set(ke);
 744                         currentWorkArea()->processKeySym(sym, key_modifier::none);
 745                         e->accept();
 746                         return true;
 747                 }
 748         }
 749         default:
 750                 return QMainWindow::event(e);
 751         }
 752 }
 753
 754
 755 bool GuiView::focusNextPrevChild(bool /*next*/)
 756 {
 757         setFocus();
 758         return true;
 759 }
 760
 761
 762 void GuiView::show()
 763 {
 764         QMainWindow::setWindowTitle(qt_("LyX"));
 765         QMainWindow::show();
 766         updateFloatingGeometry();
 767 }
 768
 769
 770 void GuiView::busy(bool yes)
 771 {
 772         if (d.tab_widget_->count()) {
 773                 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget());
 774                 BOOST_ASSERT(wa);
 775                 wa->setUpdatesEnabled(!yes);
 776                 if (yes)
 777                         wa->stopBlinkingCursor();
 778                 else
 779                         wa->startBlinkingCursor();
 780         }
 781
 782         if (yes)
 783                 QApplication::setOverrideCursor(Qt::WaitCursor);
 784         else
 785                 QApplication::restoreOverrideCursor();
 786 }
 787
 788
 789 Toolbars::ToolbarPtr GuiView::makeToolbar(ToolbarInfo const & tbinfo, bool newline)
 790 {
 791         QLToolbar * Tb = new QLToolbar(tbinfo, *this);
 792
 793         if (tbinfo.flags & ToolbarInfo::TOP) {
 794                 if (newline)
 795                         addToolBarBreak(Qt::TopToolBarArea);
 796                 addToolBar(Qt::TopToolBarArea, Tb);
 797         }
 798
 799         if (tbinfo.flags & ToolbarInfo::BOTTOM) {
 800 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 801 #if (QT_VERSION >= 0x040202)
 802                 if (newline)
 803                         addToolBarBreak(Qt::BottomToolBarArea);
 804 #endif
 805                 addToolBar(Qt::BottomToolBarArea, Tb);
 806         }
 807
 808         if (tbinfo.flags & ToolbarInfo::LEFT) {
 809 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 810 #if (QT_VERSION >= 0x040202)
 811                 if (newline)
 812                         addToolBarBreak(Qt::LeftToolBarArea);
 813 #endif
 814                 addToolBar(Qt::LeftToolBarArea, Tb);
 815         }
 816
 817         if (tbinfo.flags & ToolbarInfo::RIGHT) {
 818 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 819 #if (QT_VERSION >= 0x040202)
 820                 if (newline)
 821                         addToolBarBreak(Qt::RightToolBarArea);
 822 #endif
 823                 addToolBar(Qt::RightToolBarArea, Tb);
 824         }
 825
 826         // The following does not work so I cannot restore to exact toolbar location
 827         /*
 828         ToolbarSection::ToolbarInfo & tbinfo = LyX::ref().session().toolbars().load(tbinfo.name);
 829         Tb->move(tbinfo.posx, tbinfo.posy);
 830         */
 831
 832         return Toolbars::ToolbarPtr(Tb);
 833 }
 834
 835
 836 WorkArea * GuiView::workArea(Buffer & buffer)
 837 {
 838         for (int i = 0; i != d.tab_widget_->count(); ++i) {
 839                 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->widget(i));
 840                 BOOST_ASSERT(wa);
 841                 if (&wa->bufferView().buffer() == &buffer)
 842                         return wa;
 843         }
 844         return 0;
 845 }
 846
 847
 848 WorkArea * GuiView::addWorkArea(Buffer & buffer)
 849 {
 850         GuiWorkArea * wa = new GuiWorkArea(buffer, *this);
 851         d.tab_widget_->addTab(wa, toqstr(makeDisplayPath(buffer.fileName(), 30)));
 852         wa->bufferView().updateMetrics(false);
 853         if (d.stack_widget_)
 854                 d.stack_widget_->setCurrentWidget(d.tab_widget_);
 855         // Hide tabbar if there's only one tab.
 856         d.tab_widget_->showBar(d.tab_widget_->count() > 1);
 857         return wa;
 858 }
 859
 860
 861 WorkArea * GuiView::currentWorkArea()
 862 {
 863         if (d.tab_widget_->count() == 0)
 864                 return 0;
 865         BOOST_ASSERT(dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget()));
 866         return dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget());
 867 }
 868
 869
 870 WorkArea const * GuiView::currentWorkArea() const
 871 {
 872         if (d.tab_widget_->count() == 0)
 873                 return 0;
 874         BOOST_ASSERT(dynamic_cast<GuiWorkArea const *>(d.tab_widget_->currentWidget()));
 875         return dynamic_cast<GuiWorkArea const *>(d.tab_widget_->currentWidget());
 876 }
 877
 878
 879 void GuiView::setCurrentWorkArea(WorkArea * work_area)
 880 {
 881         BOOST_ASSERT(work_area);
 882
 883         // Changing work area can result from opening a file so
 884         // update the toc in any case.
 885         updateToc();
 886
 887         GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(work_area);
 888         BOOST_ASSERT(wa);
 889         if (wa != d.tab_widget_->currentWidget())
 890                 // Switch to the work area.
 891                 d.tab_widget_->setCurrentWidget(wa);
 892         else
 893                 // Make sure the work area is up to date.
 894                 currentTabChanged(d.tab_widget_->currentIndex());
 895         wa->setFocus();
 896 }
 897
 898
 899 void GuiView::removeWorkArea(WorkArea * work_area)
 900 {
 901         BOOST_ASSERT(work_area);
 902         if (work_area == currentWorkArea()) {
 903                 disconnectBuffer();
 904                 disconnectBufferView();
 905         }
 906
 907         // removing a work area often results from closing a file so
 908         // update the toc in any case.
 909         updateToc();
 910
 911         GuiWorkArea * gwa = dynamic_cast<GuiWorkArea *>(work_area);
 912         BOOST_ASSERT(gwa);
 913         int index = d.tab_widget_->indexOf(gwa);
 914         d.tab_widget_->removeTab(index);
 915
 916         delete gwa;
 917
 918         if (d.tab_widget_->count()) {
 919                 // make sure the next work area is enabled.
 920                 d.tab_widget_->currentWidget()->setUpdatesEnabled(true);
 921                 // Hide tabbar if there's only one tab.
 922                 d.tab_widget_->showBar(d.tab_widget_->count() > 1);
 923                 return;
 924         }
 925
 926         getDialogs().hideBufferDependent();
 927         if (d.stack_widget_) {
 928                 // No more work area, switch to the background widget.
 929                 d.setBackground();
 930         }
 931 }
 932
 933
 934 void GuiView::showMiniBuffer(bool visible)
 935 {
 936         if (!commandbuffer_)
 937                 return;
 938
 939         toolbars_->display("minibuffer", visible);
 940         commandbuffer_->focus_command();
 941 }
 942
 943
 944 void GuiView::openMenu(docstring const & name)
 945 {
 946         d.menubar_->openByName(name);
 947 }
 948
 949 } // namespace frontend
 950 } // namespace lyx
 951
 952 #include "GuiView_moc.cpp"