src/frontends/qt4/GuiView.C

   1 /**
   2  * \file GuiView.C
   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 "QLyXKeySym.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/Gui.h"
  28 #include "frontends/WorkArea.h"
  29
  30 #include "support/filetools.h"
  31 #include "support/convert.h"
  32 #include "support/lstrings.h"
  33
  34 #include "BufferView.h"
  35 #include "bufferlist.h"
  36 #include "debug.h"
  37 #include "funcrequest.h"
  38 #include "lyx_cb.h"
  39 #include "lyxrc.h"
  40 #include "lyx_main.h"
  41 #include "session.h"
  42 #include "lyxfunc.h"
  43 #include "MenuBackend.h"
  44 #include "buffer.h"
  45 #include "bufferlist.h"
  46
  47 #include <QAction>
  48 #include <QApplication>
  49 #include <QCloseEvent>
  50 #include <QPixmap>
  51 #include <QStatusBar>
  52 #include <QToolBar>
  53 #include <QTabBar>
  54 #include <QDesktopWidget>
  55 #include <QVBoxLayout>
  56
  57 #include <boost/bind.hpp>
  58 #include <boost/shared_ptr.hpp>
  59
  60 using std::endl;
  61 using std::string;
  62 using std::vector;
  63
  64 namespace lyx {
  65
  66 using support::FileName;
  67 using support::onlyFilename;
  68 using support::subst;
  69 using support::libFileSearch;
  70
  71 namespace frontend {
  72
  73 namespace {
  74
  75 int const statusbar_timer_value = 3000;
  76
  77 class TabWidget : public QWidget
  78 {
  79 public:
  80         QTabBar* tabbar;
  81
  82         TabWidget(QWidget* w, bool topTabBar)
  83         {
  84                 tabbar = new QTabBar;
  85                 QVBoxLayout* layout = new QVBoxLayout;
  86                 if (topTabBar) {
  87                         layout->addWidget(tabbar);
  88                         layout->addWidget(w);
  89                 } else {
  90                         tabbar->setShape(QTabBar::RoundedSouth);
  91                         layout->addWidget(w);
  92                         layout->addWidget(tabbar);
  93                 }
  94                 layout->setMargin(0);
  95                 setLayout(layout);
  96         }
  97
  98         void clearTabbar()
  99         {
 100                 for (int i = tabbar->count() - 1; i >= 0; --i)
 101                         tabbar->removeTab(i);
 102         }
 103 };
 104
 105 } // namespace anon
 106
 107
 108 struct GuiView::GuiViewPrivate
 109 {
 110         std::vector<std::string> tabnames;
 111
 112         TabWidget* tabWidget;
 113
 114         int posx_offset;
 115         int posy_offset;
 116
 117         GuiViewPrivate() : tabWidget(0), posx_offset(0), posy_offset(0)
 118         {}
 119
 120         unsigned int smallIconSize;
 121         unsigned int normalIconSize;
 122         unsigned int bigIconSize;
 123         // static needed by "New Window"
 124         static unsigned int lastIconSize;
 125
 126         QMenu* toolBarPopup(GuiView *parent)
 127         {
 128                 // FIXME: translation
 129                 QMenu* menu = new QMenu(parent);
 130                 QActionGroup *iconSizeGroup = new QActionGroup(parent);
 131
 132                 QAction *smallIcons = new QAction(iconSizeGroup);
 133                 smallIcons->setText(qt_("Small-sized icons"));
 134                 smallIcons->setCheckable(true);
 135                 QObject::connect(smallIcons, SIGNAL(triggered()), parent, SLOT(smallSizedIcons()));
 136                 menu->addAction(smallIcons);
 137
 138                 QAction *normalIcons = new QAction(iconSizeGroup);
 139                 normalIcons->setText(qt_("Normal-sized icons"));
 140                 normalIcons->setCheckable(true);
 141                 QObject::connect(normalIcons, SIGNAL(triggered()), parent, SLOT(normalSizedIcons()));
 142                 menu->addAction(normalIcons);
 143
 144
 145                 QAction *bigIcons = new QAction(iconSizeGroup);
 146                 bigIcons->setText(qt_("Big-sized icons"));
 147                 bigIcons->setCheckable(true);
 148                 QObject::connect(bigIcons, SIGNAL(triggered()), parent, SLOT(bigSizedIcons()));
 149                 menu->addAction(bigIcons);
 150
 151                 unsigned int cur = parent->iconSize().width();
 152                 if ( cur == parent->d.smallIconSize)
 153                         smallIcons->setChecked(true);
 154                 else if (cur == parent->d.normalIconSize)
 155                         normalIcons->setChecked(true);
 156                 else if (cur == parent->d.bigIconSize)
 157                         bigIcons->setChecked(true);
 158
 159                 return menu;
 160         }
 161 };
 162
 163
 164 unsigned int GuiView::GuiViewPrivate::lastIconSize = 0;
 165
 166
 167 GuiView::GuiView(int id)
 168         : QMainWindow(), LyXView(id), commandbuffer_(0), quitting_by_menu_(false),
 169           d(*new GuiViewPrivate)
 170 {
 171         // Qt bug? signal lastWindowClosed does not work
 172         setAttribute(Qt::WA_QuitOnClose, false);
 173         setAttribute(Qt::WA_DeleteOnClose, true);
 174
 175         // hardcode here the platform specific icon size
 176         d.smallIconSize = 14;   // scaling problems
 177         d.normalIconSize = 20;  // ok, default
 178         d.bigIconSize = 26;             // better for some math icons
 179
 180 #ifndef Q_WS_MACX
 181         //  assign an icon to main form. We do not do it under Qt/Mac,
 182         //  since the icon is provided in the application bundle.
 183         FileName const iconname = libFileSearch("images", "lyx", "xpm");
 184         if (!iconname.empty())
 185                 setWindowIcon(QPixmap(toqstr(iconname.absFilename())));
 186 #endif
 187 }
 188
 189
 190 GuiView::~GuiView()
 191 {
 192         menubar_.reset();
 193         delete &d;
 194 }
 195
 196
 197 void GuiView::close()
 198 {
 199         quitting_by_menu_ = true;
 200         QMainWindow::close();
 201         quitting_by_menu_ = false;
 202 }
 203
 204
 205 void GuiView::setFocus()
 206 {
 207         BOOST_ASSERT(work_area_);
 208         static_cast<GuiWorkArea *>(work_area_)->setFocus();
 209 }
 210
 211
 212 QMenu* GuiView::createPopupMenu()
 213 {
 214         return d.toolBarPopup(this);
 215 }
 216
 217
 218 void GuiView::init()
 219 {
 220         menubar_.reset(new QLMenubar(this, menubackend));
 221         QObject::connect(menuBar(), SIGNAL(triggered(QAction *)),
 222                 this, SLOT(updateMenu(QAction *)));
 223
 224         getToolbars().init();
 225
 226         statusBar()->setSizeGripEnabled(true);
 227
 228         QObject::connect(&statusbar_timer_, SIGNAL(timeout()),
 229                 this, SLOT(update_view_state_qt()));
 230
 231         BOOST_ASSERT(work_area_);
 232         if (!work_area_->bufferView().buffer() && !theBufferList().empty())
 233                 setBuffer(theBufferList().first());
 234
 235         // make sure the buttons are disabled if needed
 236         updateToolbars();
 237         updateLayoutChoice();
 238         updateMenubar();
 239 }
 240
 241
 242 void GuiView::closeEvent(QCloseEvent * close_event)
 243 {
 244         // we may have been called through the close window button
 245         // which bypasses the LFUN machinery.
 246         if (!quitting_by_menu_ && theApp()->gui().viewIds().size() == 1) {
 247                 if (!theBufferList().quitWriteAll()) {
 248                         close_event->ignore();
 249                         return;
 250                 }
 251         }
 252
 253         theApp()->gui().unregisterView(id());
 254         if (!theApp()->gui().viewIds().empty()) {
 255                 // Just close the window and do nothing else if this is not the
 256                 // last window.
 257                 close_event->accept();
 258                 return;
 259         }
 260
 261         if (view()->buffer()) {
 262                 // save cursor position for opened files to .lyx/session
 263                 LyX::ref().session().lastFilePos().save(
 264                         FileName(buffer()->fileName()),
 265                         boost::tie(view()->cursor().pit(),
 266                         view()->cursor().pos()));
 267         }
 268
 269         // this is the place where we leave the frontend.
 270         // it is the only point at which we start quitting.
 271         saveGeometry();
 272         close_event->accept();
 273         // quit the event loop
 274         qApp->quit();
 275 }
 276
 277
 278 void GuiView::saveGeometry()
 279 {
 280         static bool done = false;
 281         if (done)
 282                 return;
 283         else
 284                 done = true;
 285
 286         // FIXME:
 287         // change the ifdef to 'geometry = normalGeometry();' only
 288         // when Trolltech has fixed the broken normalGeometry on X11:
 289         // http://www.trolltech.com/developer/task-tracker/index_html?id=119684+&method=entry
 290         // Then also the moveEvent, resizeEvent, and the
 291         // code for floatingGeometry_ can be removed;
 292         // adjust GuiView::setGeometry()
 293 #ifdef Q_WS_WIN
 294         QRect geometry = normalGeometry();
 295 #else
 296         updateFloatingGeometry();
 297         QRect geometry = floatingGeometry_;
 298 #endif
 299
 300         // save windows size and position
 301         Session & session = LyX::ref().session();
 302         session.sessionInfo().save("WindowWidth", convert<string>(geometry.width()));
 303         session.sessionInfo().save("WindowHeight", convert<string>(geometry.height()));
 304         session.sessionInfo().save("WindowIsMaximized", (isMaximized() ? "yes" : "no"));
 305         session.sessionInfo().save("IconSizeXY", convert<string>(iconSize().width()));
 306         if (lyxrc.geometry_xysaved) {
 307                 session.sessionInfo().save("WindowPosX", convert<string>(geometry.x() + d.posx_offset));
 308                 session.sessionInfo().save("WindowPosY", convert<string>(geometry.y() + d.posy_offset));
 309         }
 310         getToolbars().saveToolbarInfo();
 311 }
 312
 313
 314 void GuiView::setGeometry(unsigned int width,
 315                           unsigned int height,
 316                           int posx, int posy,
 317                           bool maximize,
 318                           unsigned int iconSizeXY,
 319                           const string & geometryArg)
 320 {
 321         // use last value (not at startup)
 322         if (d.lastIconSize != 0)
 323                 setIconSize(d.lastIconSize);
 324         else if (iconSizeXY != 0)
 325                 setIconSize(iconSizeXY);
 326         else
 327                 setIconSize(d.normalIconSize);
 328
 329         // only true when the -geometry option was NOT used
 330         if (width != 0 && height != 0) {
 331                 if (posx != -1 && posy != -1) {
 332                         // if there are ever startup positioning problems
 333                         // on a virtual desktop then check the 6 lines below
 334                         // http://doc.trolltech.com/4.2/qdesktopwidget.html
 335                         QDesktopWidget& dw = *qApp->desktop();
 336                         QRect desk = dw.availableGeometry(dw.primaryScreen());
 337                         (posx >= desk.width() ? posx = 50 : true);
 338                         (posy >= desk.height()? posy = 50 : true);
 339 #ifdef Q_WS_WIN
 340                         // FIXME: use setGeometry only when Trolltech has fixed the qt4/X11 bug
 341                         QWidget::setGeometry(posx, posy, width, height);
 342 #else
 343                         resize(width, height);
 344                         move(posx, posy);
 345 #endif
 346                 } else {
 347                         resize(width, height);
 348                 }
 349
 350                 if (maximize)
 351                         setWindowState(Qt::WindowMaximized);
 352         }
 353         else
 354         {
 355                 // FIXME: move this code into parse_geometry() (lyx_main.C)
 356 #ifdef Q_WS_WIN
 357                 int x, y;
 358                 int w, h;
 359                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 360                 re.indexIn(toqstr(geometryArg.c_str()));
 361                 w = re.cap(1).toInt();
 362                 h = re.cap(2).toInt();
 363                 x = re.cap(3).toInt();
 364                 y = re.cap(4).toInt();
 365                 QWidget::setGeometry( x, y, w, h );
 366 #else
 367                 // silence warning
 368                 (void)geometryArg;
 369 #endif
 370         }
 371
 372         show();
 373
 374         // For an unknown reason, the Window title update is not effective for
 375         // the second windows up until it is shown on screen (Qt bug?).
 376         updateWindowTitle();
 377
 378         // after show geometry() has changed (Qt bug?)
 379         // we compensate the drift when storing the position
 380         d.posx_offset = 0;
 381         d.posy_offset = 0;
 382         if (width != 0 && height != 0)
 383                 if (posx != -1 && posy != -1) {
 384 #ifdef Q_WS_WIN
 385                         d.posx_offset = posx - normalGeometry().x();
 386                         d.posy_offset = posy - normalGeometry().y();
 387 #else
 388 #ifndef Q_WS_MACX
 389                         if (!maximize) {
 390                                 d.posx_offset = posx - geometry().x();
 391                                 d.posy_offset = posy - geometry().y();
 392                         }
 393 #endif
 394 #endif
 395                 }
 396 }
 397
 398
 399 void GuiView::updateMenu(QAction * /*action*/)
 400 {
 401         menubar_->update();
 402 }
 403
 404
 405 void GuiView::setWindowTitle(docstring const & t, docstring const & it)
 406 {
 407         QString title = windowTitle();
 408         QString new_title = toqstr(t);
 409         if (title != new_title) {
 410                 QMainWindow::setWindowTitle(new_title);
 411                 QMainWindow::setWindowIconText(toqstr(it));
 412         }
 413 }
 414
 415
 416 void GuiView::addCommandBuffer(QToolBar * toolbar)
 417 {
 418         commandbuffer_ = new QCommandBuffer(this, *controlcommand_);
 419         focus_command_buffer.connect(boost::bind(&GuiView::focus_command_widget, this));
 420         toolbar->addWidget(commandbuffer_);
 421 }
 422
 423
 424 void GuiView::message(docstring const & str)
 425 {
 426         statusBar()->showMessage(toqstr(str));
 427         statusbar_timer_.stop();
 428         statusbar_timer_.start(statusbar_timer_value);
 429 }
 430
 431
 432 void GuiView::clearMessage()
 433 {
 434         update_view_state_qt();
 435 }
 436
 437
 438 void GuiView::setIconSize(unsigned int size)
 439 {
 440         d.lastIconSize = size;
 441         QMainWindow::setIconSize(QSize(size, size));
 442 }
 443
 444
 445 void GuiView::smallSizedIcons()
 446 {
 447         setIconSize(d.smallIconSize);
 448 }
 449
 450
 451 void GuiView::normalSizedIcons()
 452 {
 453         setIconSize(d.normalIconSize);
 454 }
 455
 456
 457 void GuiView::bigSizedIcons()
 458 {
 459         setIconSize(d.bigIconSize);
 460 }
 461
 462
 463 void GuiView::focus_command_widget()
 464 {
 465         if (commandbuffer_)
 466                 commandbuffer_->focus_command();
 467 }
 468
 469
 470 void GuiView::update_view_state_qt()
 471 {
 472         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 473         statusbar_timer_.stop();
 474 }
 475
 476
 477 void GuiView::initTab(QWidget* workarea)
 478 {
 479         // construct the TabWidget with 'false' to have the tabbar at the bottom
 480         d.tabWidget = new TabWidget(workarea, true);
 481         setCentralWidget(d.tabWidget);
 482         QObject::connect(d.tabWidget->tabbar, SIGNAL(currentChanged(int)),
 483                         this, SLOT(currentTabChanged(int)));
 484 }
 485
 486
 487 void GuiView::updateTab()
 488 {
 489         std::vector<string> const & names = theBufferList().getFileNames();
 490
 491         // avoid unnecessary tabbar rebuild:
 492         // check if something has changed
 493         if (d.tabnames == names)
 494                 return;
 495         d.tabnames = names;
 496
 497         QTabBar & tabbar = *d.tabWidget->tabbar;
 498
 499         // update when all is done
 500         tabbar.blockSignals(true);
 501
 502         // remove all tab bars
 503         d.tabWidget->clearTabbar();
 504
 505         string cur_title;
 506         if (view()->buffer()) {
 507                 cur_title = view()->buffer()->fileName();
 508         }
 509
 510         // rebuild tabbar and function map from scratch
 511         if (names.size() > 1) {
 512                 for(size_t i = 0; i < names.size(); i++) {
 513                         tabbar.addTab(toqstr(onlyFilename(names[i])));
 514                         // set current tab
 515                         if (names[i] == cur_title)
 516                                 tabbar.setCurrentIndex(i);
 517                 }
 518         }
 519         tabbar.blockSignals(false);
 520 }
 521
 522
 523 void GuiView::currentTabChanged(int i)
 524 {
 525         BOOST_ASSERT(i >= 0 && size_type(i) < d.tabnames.size());
 526         dispatch(FuncRequest(LFUN_BUFFER_SWITCH, d.tabnames[i]));
 527 }
 528
 529
 530 void GuiView::updateStatusBar()
 531 {
 532         // let the user see the explicit message
 533         if (statusbar_timer_.isActive())
 534                 return;
 535
 536         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 537 }
 538
 539
 540 void GuiView::activated(FuncRequest const & func)
 541 {
 542         dispatch(func);
 543 }
 544
 545
 546 bool GuiView::hasFocus() const
 547 {
 548         return qApp->activeWindow() == this;
 549 }
 550
 551
 552 void  GuiView::updateFloatingGeometry()
 553 {
 554         if (!isMaximized())
 555                 floatingGeometry_ = QRect(x(), y(), width(), height());
 556 }
 557
 558
 559 void GuiView::resizeEvent(QResizeEvent *)
 560 {
 561         updateFloatingGeometry();
 562 }
 563
 564
 565 void GuiView::moveEvent(QMoveEvent *)
 566 {
 567         updateFloatingGeometry();
 568 }
 569
 570
 571 bool GuiView::event(QEvent * e)
 572 {
 573         // Useful debug code:
 574         /*
 575         switch (e->type())
 576         {
 577         case QEvent::WindowActivate:
 578         case QEvent::ActivationChange:
 579         case QEvent::WindowDeactivate:
 580         case QEvent::Paint:
 581         case QEvent::Enter:
 582         case QEvent::Leave:
 583         case QEvent::HoverEnter:
 584         case QEvent::HoverLeave:
 585         case QEvent::HoverMove:
 586         case QEvent::StatusTip:
 587                 break;
 588         default:
 589         */
 590
 591         if (e->type() == QEvent::ShortcutOverride) {
 592                 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 593                 if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
 594                         boost::shared_ptr<QLyXKeySym> sym(new QLyXKeySym);
 595                         sym->set(ke);
 596                         BOOST_ASSERT(work_area_);
 597                         work_area_->processKeySym(sym, key_modifier::none);
 598                         e->accept();
 599                         return true;
 600                 }
 601         }
 602         //} for the debug switch above.
 603
 604         return QMainWindow::event(e);
 605 }
 606
 607
 608 bool GuiView::focusNextPrevChild(bool /*next*/)
 609 {
 610         setFocus();
 611         return true;
 612 }
 613
 614
 615 void GuiView::show()
 616 {
 617         QMainWindow::setWindowTitle(qt_("LyX"));
 618         QMainWindow::show();
 619         updateFloatingGeometry();
 620 }
 621
 622
 623 void GuiView::busy(bool yes)
 624 {
 625         BOOST_ASSERT(work_area_);
 626         static_cast<GuiWorkArea *>(work_area_)->setUpdatesEnabled(!yes);
 627
 628         if (yes) {
 629                 work_area_->stopBlinkingCursor();
 630                 QApplication::setOverrideCursor(Qt::WaitCursor);
 631         }
 632         else {
 633                 work_area_->startBlinkingCursor();
 634                 QApplication::restoreOverrideCursor();
 635         }
 636 }
 637
 638
 639 Toolbars::ToolbarPtr GuiView::makeToolbar(ToolbarBackend::Toolbar const & tbb, bool newline)
 640 {
 641         QLToolbar * Tb = new QLToolbar(tbb, *this);
 642
 643         if (tbb.flags & ToolbarBackend::TOP) {
 644                 if (newline)
 645                         addToolBarBreak(Qt::TopToolBarArea);
 646                 addToolBar(Qt::TopToolBarArea, Tb);
 647         }
 648
 649         if (tbb.flags & ToolbarBackend::BOTTOM) {
 650 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 651 #if (QT_VERSION >= 0x040202)
 652                 if (newline)
 653                         addToolBarBreak(Qt::BottomToolBarArea);
 654 #endif
 655                 addToolBar(Qt::BottomToolBarArea, Tb);
 656         }
 657
 658         if (tbb.flags & ToolbarBackend::LEFT) {
 659 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 660 #if (QT_VERSION >= 0x040202)
 661                 if (newline)
 662                         addToolBarBreak(Qt::LeftToolBarArea);
 663 #endif
 664                 addToolBar(Qt::LeftToolBarArea, Tb);
 665         }
 666
 667         if (tbb.flags & ToolbarBackend::RIGHT) {
 668 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 669 #if (QT_VERSION >= 0x040202)
 670                 if (newline)
 671                         addToolBarBreak(Qt::RightToolBarArea);
 672 #endif
 673                 addToolBar(Qt::RightToolBarArea, Tb);
 674         }
 675
 676         // The following does not work so I can not restore to exact toolbar location
 677         /*
 678         ToolbarSection::ToolbarInfo & info = LyX::ref().session().toolbars().load(tbb.name);
 679         Tb->move(info.posx, info.posy);
 680         */
 681
 682         return Toolbars::ToolbarPtr(Tb);
 683 }
 684
 685 } // namespace frontend
 686 } // namespace lyx
 687
 688 #include "GuiView_moc.cpp"