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(false);
 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_) {
 247                 if (!theBufferList().quitWriteAll()) {
 248                         close_event->ignore();
 249                         return;
 250                 }
 251         }
 252         if (view()->buffer()) {
 253                 // save cursor position for opened files to .lyx/session
 254                 LyX::ref().session().lastFilePos().save(
 255                         FileName(buffer()->fileName()),
 256                         boost::tie(view()->cursor().pit(),
 257                         view()->cursor().pos()));
 258         }
 259         theApp()->gui().unregisterView(id());
 260         if (theApp()->gui().viewIds().empty())
 261         {
 262                 // this is the place where we leave the frontend.
 263                 // it is the only point at which we start quitting.
 264                 saveGeometry();
 265                 close_event->accept();
 266                 // quit the event loop
 267                 qApp->quit();
 268         }
 269         close_event->accept();
 270 }
 271
 272
 273 void GuiView::saveGeometry()
 274 {
 275         static bool done = false;
 276         if (done)
 277                 return;
 278         else
 279                 done = true;
 280
 281         // FIXME:
 282         // change the ifdef to 'geometry = normalGeometry();' only
 283         // when Trolltech has fixed the broken normalGeometry on X11:
 284         // http://www.trolltech.com/developer/task-tracker/index_html?id=119684+&method=entry
 285         // Then also the moveEvent, resizeEvent, and the
 286         // code for floatingGeometry_ can be removed;
 287         // adjust GuiView::setGeometry()
 288 #ifdef Q_WS_WIN
 289         QRect geometry = normalGeometry();
 290 #else
 291         updateFloatingGeometry();
 292         QRect geometry = floatingGeometry_;
 293 #endif
 294
 295         // save windows size and position
 296         Session & session = LyX::ref().session();
 297         session.sessionInfo().save("WindowWidth", convert<string>(geometry.width()));
 298         session.sessionInfo().save("WindowHeight", convert<string>(geometry.height()));
 299         session.sessionInfo().save("WindowIsMaximized", (isMaximized() ? "yes" : "no"));
 300         session.sessionInfo().save("IconSizeXY", convert<string>(iconSize().width()));
 301         if (lyxrc.geometry_xysaved) {
 302                 session.sessionInfo().save("WindowPosX", convert<string>(geometry.x() + d.posx_offset));
 303                 session.sessionInfo().save("WindowPosY", convert<string>(geometry.y() + d.posy_offset));
 304         }
 305         getToolbars().saveToolbarInfo();
 306 }
 307
 308
 309 void GuiView::setGeometry(unsigned int width,
 310                           unsigned int height,
 311                           int posx, int posy,
 312                           bool maximize,
 313                           unsigned int iconSizeXY,
 314                           const string & geometryArg)
 315 {
 316         // use last value (not at startup)
 317         if (d.lastIconSize != 0)
 318                 setIconSize(d.lastIconSize);
 319         else if (iconSizeXY != 0)
 320                 setIconSize(iconSizeXY);
 321         else
 322                 setIconSize(d.normalIconSize);
 323
 324         // only true when the -geometry option was NOT used
 325         if (width != 0 && height != 0) {
 326                 if (posx != -1 && posy != -1) {
 327                         // if there are ever startup positioning problems
 328                         // on a virtual desktop then check the 6 lines below
 329                         // http://doc.trolltech.com/4.2/qdesktopwidget.html
 330                         QDesktopWidget& dw = *qApp->desktop();
 331                         QRect desk = dw.availableGeometry(dw.primaryScreen());
 332                         (posx >= desk.width() ? posx = 50 : true);
 333                         (posy >= desk.height()? posy = 50 : true);
 334 #ifdef Q_WS_WIN
 335                         // FIXME: use setGeometry only when Trolltech has fixed the qt4/X11 bug
 336                         QWidget::setGeometry(posx, posy, width, height);
 337 #else
 338                         resize(width, height);
 339                         move(posx, posy);
 340 #endif
 341                 } else {
 342                         resize(width, height);
 343                 }
 344
 345                 if (maximize)
 346                         setWindowState(Qt::WindowMaximized);
 347         }
 348         else
 349         {
 350                 // FIXME: move this code into parse_geometry() (lyx_main.C)
 351 #ifdef Q_WS_WIN
 352                 int x, y;
 353                 int w, h;
 354                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 355                 re.indexIn(toqstr(geometryArg.c_str()));
 356                 w = re.cap(1).toInt();
 357                 h = re.cap(2).toInt();
 358                 x = re.cap(3).toInt();
 359                 y = re.cap(4).toInt();
 360                 QWidget::setGeometry( x, y, w, h );
 361 #else
 362                 // silence warning
 363                 (void)geometryArg;
 364 #endif
 365         }
 366
 367         show();
 368
 369         // For an unknown reason, the Window title update is not effective for
 370         // the second windows up until it is shown on screen (Qt bug?).
 371         updateWindowTitle();
 372
 373         // after show geometry() has changed (Qt bug?)
 374         // we compensate the drift when storing the position
 375         d.posx_offset = 0;
 376         d.posy_offset = 0;
 377         if (width != 0 && height != 0)
 378                 if (posx != -1 && posy != -1) {
 379 #ifdef Q_WS_WIN
 380                         d.posx_offset = posx - normalGeometry().x();
 381                         d.posy_offset = posy - normalGeometry().y();
 382 #else
 383 #ifndef Q_WS_MACX
 384                         if (!maximize) {
 385                                 d.posx_offset = posx - geometry().x();
 386                                 d.posy_offset = posy - geometry().y();
 387                         }
 388 #endif
 389 #endif
 390                 }
 391 }
 392
 393
 394 void GuiView::updateMenu(QAction * /*action*/)
 395 {
 396         menubar_->update();
 397 }
 398
 399
 400 void GuiView::setWindowTitle(docstring const & t, docstring const & it)
 401 {
 402         QString title = windowTitle();
 403         QString new_title = toqstr(t);
 404         if (title != new_title) {
 405                 QMainWindow::setWindowTitle(new_title);
 406                 QMainWindow::setWindowIconText(toqstr(it));
 407         }
 408 }
 409
 410
 411 void GuiView::addCommandBuffer(QToolBar * toolbar)
 412 {
 413         commandbuffer_ = new QCommandBuffer(this, *controlcommand_);
 414         focus_command_buffer.connect(boost::bind(&GuiView::focus_command_widget, this));
 415         toolbar->addWidget(commandbuffer_);
 416 }
 417
 418
 419 void GuiView::message(docstring const & str)
 420 {
 421         statusBar()->showMessage(toqstr(str));
 422         statusbar_timer_.stop();
 423         statusbar_timer_.start(statusbar_timer_value);
 424 }
 425
 426
 427 void GuiView::clearMessage()
 428 {
 429         update_view_state_qt();
 430 }
 431
 432
 433 void GuiView::setIconSize(unsigned int size)
 434 {
 435         d.lastIconSize = size;
 436         QMainWindow::setIconSize(QSize(size, size));
 437 }
 438
 439
 440 void GuiView::smallSizedIcons()
 441 {
 442         setIconSize(d.smallIconSize);
 443 }
 444
 445
 446 void GuiView::normalSizedIcons()
 447 {
 448         setIconSize(d.normalIconSize);
 449 }
 450
 451
 452 void GuiView::bigSizedIcons()
 453 {
 454         setIconSize(d.bigIconSize);
 455 }
 456
 457
 458 void GuiView::focus_command_widget()
 459 {
 460         if (commandbuffer_)
 461                 commandbuffer_->focus_command();
 462 }
 463
 464
 465 void GuiView::update_view_state_qt()
 466 {
 467         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 468         statusbar_timer_.stop();
 469 }
 470
 471
 472 void GuiView::initTab(QWidget* workarea)
 473 {
 474         // construct the TabWidget with 'false' to have the tabbar at the bottom
 475         d.tabWidget = new TabWidget(workarea, true);
 476         setCentralWidget(d.tabWidget);
 477         QObject::connect(d.tabWidget->tabbar, SIGNAL(currentChanged(int)),
 478                         this, SLOT(currentTabChanged(int)));
 479 }
 480
 481
 482 void GuiView::updateTab()
 483 {
 484         std::vector<string> const & names = theBufferList().getFileNames();
 485
 486         // avoid unnecessary tabbar rebuild:
 487         // check if something has changed
 488         if (d.tabnames == names)
 489                 return;
 490         d.tabnames = names;
 491
 492         QTabBar & tabbar = *d.tabWidget->tabbar;
 493
 494         // update when all is done
 495         tabbar.blockSignals(true);
 496
 497         // remove all tab bars
 498         d.tabWidget->clearTabbar();
 499
 500         string cur_title;
 501         if (view()->buffer()) {
 502                 cur_title = view()->buffer()->fileName();
 503         }
 504
 505         // rebuild tabbar and function map from scratch
 506         if (names.size() > 1) {
 507                 for(size_t i = 0; i < names.size(); i++) {
 508                         tabbar.addTab(toqstr(onlyFilename(names[i])));
 509                         // set current tab
 510                         if (names[i] == cur_title)
 511                                 tabbar.setCurrentIndex(i);
 512                 }
 513         }
 514         tabbar.blockSignals(false);
 515 }
 516
 517
 518 void GuiView::currentTabChanged(int i)
 519 {
 520         BOOST_ASSERT(i >= 0 && size_type(i) < d.tabnames.size());
 521         dispatch(FuncRequest(LFUN_BUFFER_SWITCH, d.tabnames[i]));
 522 }
 523
 524
 525 void GuiView::updateStatusBar()
 526 {
 527         // let the user see the explicit message
 528         if (statusbar_timer_.isActive())
 529                 return;
 530
 531         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 532 }
 533
 534
 535 void GuiView::activated(FuncRequest const & func)
 536 {
 537         dispatch(func);
 538 }
 539
 540
 541 bool GuiView::hasFocus() const
 542 {
 543         return qApp->activeWindow() == this;
 544 }
 545
 546
 547 void  GuiView::updateFloatingGeometry()
 548 {
 549         if (!isMaximized())
 550                 floatingGeometry_ = QRect(x(), y(), width(), height());
 551 }
 552
 553
 554 void GuiView::resizeEvent(QResizeEvent *)
 555 {
 556         updateFloatingGeometry();
 557 }
 558
 559
 560 void GuiView::moveEvent(QMoveEvent *)
 561 {
 562         updateFloatingGeometry();
 563 }
 564
 565
 566 bool GuiView::event(QEvent * e)
 567 {
 568         // Useful debug code:
 569         /*
 570         switch (e->type())
 571         {
 572         case QEvent::WindowActivate:
 573         case QEvent::ActivationChange:
 574         case QEvent::WindowDeactivate:
 575         case QEvent::Paint:
 576         case QEvent::Enter:
 577         case QEvent::Leave:
 578         case QEvent::HoverEnter:
 579         case QEvent::HoverLeave:
 580         case QEvent::HoverMove:
 581         case QEvent::StatusTip:
 582                 break;
 583         default:
 584         */
 585
 586         if (e->type() == QEvent::ShortcutOverride) {
 587                 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 588                 if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
 589                         boost::shared_ptr<QLyXKeySym> sym(new QLyXKeySym);
 590                         sym->set(ke);
 591                         BOOST_ASSERT(work_area_);
 592                         work_area_->processKeySym(sym, key_modifier::none);
 593                         e->accept();
 594                         return true;
 595                 }
 596         }
 597         //} for the debug switch above.
 598
 599         return QMainWindow::event(e);
 600 }
 601
 602
 603 bool GuiView::focusNextPrevChild(bool /*next*/)
 604 {
 605         setFocus();
 606         return true;
 607 }
 608
 609
 610 void GuiView::show()
 611 {
 612         QMainWindow::setWindowTitle(qt_("LyX"));
 613         QMainWindow::show();
 614         updateFloatingGeometry();
 615 }
 616
 617
 618 void GuiView::busy(bool yes)
 619 {
 620         BOOST_ASSERT(work_area_);
 621         static_cast<GuiWorkArea *>(work_area_)->setUpdatesEnabled(!yes);
 622
 623         if (yes) {
 624                 work_area_->stopBlinkingCursor();
 625                 QApplication::setOverrideCursor(Qt::WaitCursor);
 626         }
 627         else {
 628                 work_area_->startBlinkingCursor();
 629                 QApplication::restoreOverrideCursor();
 630         }
 631 }
 632
 633
 634 Toolbars::ToolbarPtr GuiView::makeToolbar(ToolbarBackend::Toolbar const & tbb, bool newline)
 635 {
 636         QLToolbar * Tb = new QLToolbar(tbb, *this);
 637
 638         if (tbb.flags & ToolbarBackend::TOP) {
 639                 if (newline)
 640                         addToolBarBreak(Qt::TopToolBarArea);
 641                 addToolBar(Qt::TopToolBarArea, Tb);
 642         }
 643
 644         if (tbb.flags & ToolbarBackend::BOTTOM) {
 645 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 646 #if (QT_VERSION >= 0x040202)
 647                 if (newline)
 648                         addToolBarBreak(Qt::BottomToolBarArea);
 649 #endif
 650                 addToolBar(Qt::BottomToolBarArea, Tb);
 651         }
 652
 653         if (tbb.flags & ToolbarBackend::LEFT) {
 654 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 655 #if (QT_VERSION >= 0x040202)
 656                 if (newline)
 657                         addToolBarBreak(Qt::LeftToolBarArea);
 658 #endif
 659                 addToolBar(Qt::LeftToolBarArea, Tb);
 660         }
 661
 662         if (tbb.flags & ToolbarBackend::RIGHT) {
 663 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 664 #if (QT_VERSION >= 0x040202)
 665                 if (newline)
 666                         addToolBarBreak(Qt::RightToolBarArea);
 667 #endif
 668                 addToolBar(Qt::RightToolBarArea, Tb);
 669         }
 670
 671         // The following does not work so I can not restore to exact toolbar location
 672         /*
 673         ToolbarSection::ToolbarInfo & info = LyX::ref().session().toolbars().load(tbb.name);
 674         Tb->move(info.posx, info.posy);
 675         */
 676
 677         return Toolbars::ToolbarPtr(Tb);
 678 }
 679
 680 } // namespace frontend
 681 } // namespace lyx
 682
 683 #include "GuiView_moc.cpp"