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         typedef std::map<int, FuncRequest> FuncMap;
 111         FuncMap funcmap;
 112
 113         TabWidget* tabWidget;
 114
 115         int posx_offset;
 116         int posy_offset;
 117
 118         GuiViewPrivate() : tabWidget(0), posx_offset(0), posy_offset(0)
 119         {}
 120
 121         unsigned int smallIconSize;
 122         unsigned int normalIconSize;
 123         unsigned int bigIconSize;
 124         // static needed by "New Window"
 125         static unsigned int lastIconSize;
 126
 127         QMenu* toolBarPopup(GuiView *parent)
 128         {
 129                 // FIXME: translation
 130                 QMenu* menu = new QMenu(parent);
 131                 QActionGroup *iconSizeGroup = new QActionGroup(parent);
 132
 133                 QAction *smallIcons = new QAction(iconSizeGroup);
 134                 smallIcons->setText(qt_("Small-sized icons"));
 135                 smallIcons->setCheckable(true);
 136                 QObject::connect(smallIcons, SIGNAL(triggered()), parent, SLOT(smallSizedIcons()));
 137                 menu->addAction(smallIcons);
 138
 139                 QAction *normalIcons = new QAction(iconSizeGroup);
 140                 normalIcons->setText(qt_("Normal-sized icons"));
 141                 normalIcons->setCheckable(true);
 142                 QObject::connect(normalIcons, SIGNAL(triggered()), parent, SLOT(normalSizedIcons()));
 143                 menu->addAction(normalIcons);
 144
 145
 146                 QAction *bigIcons = new QAction(iconSizeGroup);
 147                 bigIcons->setText(qt_("Big-sized icons"));
 148                 bigIcons->setCheckable(true);
 149                 QObject::connect(bigIcons, SIGNAL(triggered()), parent, SLOT(bigSizedIcons()));
 150                 menu->addAction(bigIcons);
 151
 152                 unsigned int cur = parent->iconSize().width();
 153                 if ( cur == parent->d.smallIconSize)
 154                         smallIcons->setChecked(true);
 155                 else if (cur == parent->d.normalIconSize)
 156                         normalIcons->setChecked(true);
 157                 else if (cur == parent->d.bigIconSize)
 158                         bigIcons->setChecked(true);
 159
 160                 return menu;
 161         }
 162 };
 163
 164
 165 unsigned int GuiView::GuiViewPrivate::lastIconSize = 0;
 166
 167
 168 GuiView::GuiView(int id)
 169         : QMainWindow(), LyXView(id), commandbuffer_(0), quitting_by_menu_(false),
 170           d(*new GuiViewPrivate)
 171 {
 172         // Qt bug? signal lastWindowClosed does not work
 173         setAttribute(Qt::WA_QuitOnClose, false);
 174         setAttribute(Qt::WA_DeleteOnClose, true);
 175
 176         // hardcode here the platform specific icon size
 177         d.smallIconSize = 14;   // scaling problems
 178         d.normalIconSize = 20;  // ok, default
 179         d.bigIconSize = 26;             // better for some math icons
 180
 181 #ifndef Q_WS_MACX
 182         //  assign an icon to main form. We do not do it under Qt/Mac,
 183         //  since the icon is provided in the application bundle.
 184         FileName const iconname = libFileSearch("images", "lyx", "xpm");
 185         if (!iconname.empty())
 186                 setWindowIcon(QPixmap(toqstr(iconname.absFilename())));
 187 #endif
 188 }
 189
 190
 191 GuiView::~GuiView()
 192 {
 193         menubar_.reset();
 194         delete &d;
 195 }
 196
 197
 198 void GuiView::close()
 199 {
 200         quitting_by_menu_ = true;
 201         QMainWindow::close();
 202         quitting_by_menu_ = false;
 203 }
 204
 205
 206 void GuiView::setFocus()
 207 {
 208         BOOST_ASSERT(work_area_);
 209         static_cast<GuiWorkArea *>(work_area_)->setFocus();
 210 }
 211
 212
 213 QMenu* GuiView::createPopupMenu()
 214 {
 215         return d.toolBarPopup(this);
 216 }
 217
 218
 219 void GuiView::init()
 220 {
 221         menubar_.reset(new QLMenubar(this, menubackend));
 222         QObject::connect(menuBar(), SIGNAL(triggered(QAction *)),
 223                 this, SLOT(updateMenu(QAction *)));
 224
 225         getToolbars().init();
 226
 227         statusBar()->setSizeGripEnabled(false);
 228
 229         QObject::connect(&statusbar_timer_, SIGNAL(timeout()),
 230                 this, SLOT(update_view_state_qt()));
 231
 232         BOOST_ASSERT(work_area_);
 233         if (!work_area_->bufferView().buffer() && !theBufferList().empty())
 234                 setBuffer(theBufferList().first());
 235
 236         // make sure the buttons are disabled if needed
 237         updateToolbars();
 238         updateLayoutChoice();
 239         updateMenubar();
 240 }
 241
 242
 243 void GuiView::closeEvent(QCloseEvent * close_event)
 244 {
 245         // we may have been called through the close window button
 246         // which bypasses the LFUN machinery.
 247         if (!quitting_by_menu_) {
 248                 if (!theBufferList().quitWriteAll()) {
 249                         close_event->ignore();
 250                         return;
 251                 }
 252         }
 253         if (view()->buffer()) {
 254                 // save cursor position for opened files to .lyx/session
 255                 LyX::ref().session().lastFilePos().save(
 256                         FileName(buffer()->fileName()),
 257                         boost::tie(view()->cursor().pit(),
 258                         view()->cursor().pos()));
 259         }
 260         theApp()->gui().unregisterView(id());
 261         if (theApp()->gui().viewIds().empty())
 262         {
 263                 // this is the place where we leave the frontend.
 264                 // it is the only point at which we start quitting.
 265                 saveGeometry();
 266                 close_event->accept();
 267                 // quit the event loop
 268                 qApp->quit();
 269         }
 270         close_event->accept();
 271 }
 272
 273
 274 void GuiView::saveGeometry()
 275 {
 276         static bool done = false;
 277         if (done)
 278                 return;
 279         else
 280                 done = true;
 281
 282         // FIXME:
 283         // change the ifdef to 'geometry = normalGeometry();' only
 284         // when Trolltech has fixed the broken normalGeometry on X11:
 285         // http://www.trolltech.com/developer/task-tracker/index_html?id=119684+&method=entry
 286         // Then also the moveEvent, resizeEvent, and the
 287         // code for floatingGeometry_ can be removed;
 288         // adjust GuiView::setGeometry()
 289 #ifdef Q_WS_WIN
 290         QRect geometry = normalGeometry();
 291 #else
 292         updateFloatingGeometry();
 293         QRect geometry = floatingGeometry_;
 294 #endif
 295
 296         // save windows size and position
 297         Session & session = LyX::ref().session();
 298         session.sessionInfo().save("WindowWidth", convert<string>(geometry.width()));
 299         session.sessionInfo().save("WindowHeight", convert<string>(geometry.height()));
 300         session.sessionInfo().save("WindowIsMaximized", (isMaximized() ? "yes" : "no"));
 301         session.sessionInfo().save("IconSizeXY", convert<string>(iconSize().width()));
 302         if (lyxrc.geometry_xysaved) {
 303                 session.sessionInfo().save("WindowPosX", convert<string>(geometry.x() + d.posx_offset));
 304                 session.sessionInfo().save("WindowPosY", convert<string>(geometry.y() + d.posy_offset));
 305         }
 306         getToolbars().saveToolbarInfo();
 307 }
 308
 309
 310 void GuiView::setGeometry(unsigned int width,
 311                                                                   unsigned int height,
 312                                                                   int posx, int posy,
 313                                                                   bool maximize,
 314                                                                   unsigned int iconSizeXY,
 315                                                                   const std::string & geometryArg)
 316 {
 317         // use last value (not at startup)
 318         if (d.lastIconSize != 0)
 319                 setIconSize(d.lastIconSize);
 320         else if (iconSizeXY != 0)
 321                 setIconSize(iconSizeXY);
 322         else
 323                 setIconSize(d.normalIconSize);
 324
 325         // only true when the -geometry option was NOT used
 326         if (width != 0 && height != 0) {
 327                 if (posx != -1 && posy != -1) {
 328                         // if there are ever startup positioning problems
 329                         // on a virtual desktop then check the 6 lines below
 330                         // http://doc.trolltech.com/4.2/qdesktopwidget.html
 331                         QDesktopWidget& dw = *qApp->desktop();
 332                         QRect desk = dw.availableGeometry(dw.primaryScreen());
 333                         (posx >= desk.width() ? posx = 50 : true);
 334                         (posy >= desk.height()? posy = 50 : true);
 335 #ifdef Q_WS_WIN
 336                         // FIXME: use setGeometry only when Trolltech has fixed the qt4/X11 bug
 337                         QWidget::setGeometry(posx, posy, width, height);
 338 #else
 339                         resize(width, height);
 340                         move(posx, posy);
 341 #endif
 342                 } else {
 343                         resize(width, height);
 344                 }
 345
 346                 if (maximize)
 347                         setWindowState(Qt::WindowMaximized);
 348         }
 349         else
 350         {
 351                 // FIXME: move this code into parse_geometry() (lyx_main.C)
 352 #ifdef Q_WS_WIN
 353                 int x, y;
 354                 int w, h;
 355                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 356                 re.indexIn( toqstr(geometryArg.c_str()));
 357                 w = re.cap( 1 ).toInt();
 358                 h = re.cap( 2 ).toInt();
 359                 x = re.cap( 3 ).toInt();
 360                 y = re.cap( 4 ).toInt();
 361                 QWidget::setGeometry( x, y, w, h );
 362 #endif
 363         }
 364
 365         show();
 366
 367         // For an unknown reason, the Window title update is not effective for
 368         // the second windows up until it is shown on screen (Qt bug?).
 369         updateWindowTitle();
 370
 371         // after show geometry() has changed (Qt bug?)
 372         // we compensate the drift when storing the position
 373         d.posx_offset = 0;
 374         d.posy_offset = 0;
 375         if (width != 0 && height != 0)
 376                 if (posx != -1 && posy != -1) {
 377 #ifdef Q_WS_WIN
 378                         d.posx_offset = posx - normalGeometry().x();
 379                         d.posy_offset = posy - normalGeometry().y();
 380 #else
 381 #ifndef Q_WS_MACX
 382                         if (!maximize) {
 383                                 d.posx_offset = posx - geometry().x();
 384                                 d.posy_offset = posy - geometry().y();
 385                         }
 386 #endif
 387 #endif
 388                 }
 389 }
 390
 391
 392 void GuiView::updateMenu(QAction * /*action*/)
 393 {
 394         menubar_->update();
 395 }
 396
 397
 398 void GuiView::setWindowTitle(docstring const & t, docstring const & it)
 399 {
 400         QString title = windowTitle();
 401         QString new_title = toqstr(t);
 402         if (title != new_title) {
 403                 QMainWindow::setWindowTitle(new_title);
 404                 QMainWindow::setWindowIconText(toqstr(it));
 405         }
 406 }
 407
 408
 409 void GuiView::addCommandBuffer(QToolBar * toolbar)
 410 {
 411         commandbuffer_ = new QCommandBuffer(this, *controlcommand_);
 412         focus_command_buffer.connect(boost::bind(&GuiView::focus_command_widget, this));
 413         toolbar->addWidget(commandbuffer_);
 414 }
 415
 416
 417 void GuiView::message(docstring const & str)
 418 {
 419         statusBar()->showMessage(toqstr(str));
 420         statusbar_timer_.stop();
 421         statusbar_timer_.start(statusbar_timer_value);
 422 }
 423
 424
 425 void GuiView::clearMessage()
 426 {
 427         update_view_state_qt();
 428 }
 429
 430
 431 void GuiView::setIconSize(unsigned int size)
 432 {
 433         d.lastIconSize = size;
 434         QMainWindow::setIconSize(QSize(size, size));
 435 }
 436
 437
 438 void GuiView::smallSizedIcons()
 439 {
 440         setIconSize(d.smallIconSize);
 441 }
 442
 443
 444 void GuiView::normalSizedIcons()
 445 {
 446         setIconSize(d.normalIconSize);
 447 }
 448
 449
 450 void GuiView::bigSizedIcons()
 451 {
 452         setIconSize(d.bigIconSize);
 453 }
 454
 455
 456 void GuiView::focus_command_widget()
 457 {
 458         if (commandbuffer_)
 459                 commandbuffer_->focus_command();
 460 }
 461
 462
 463 void GuiView::update_view_state_qt()
 464 {
 465         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 466         statusbar_timer_.stop();
 467 }
 468
 469
 470 void GuiView::initTab(QWidget* workarea)
 471 {
 472         // construct the TabWidget with 'false' to have the tabbar at the bottom
 473         d.tabWidget = new TabWidget(workarea, true);
 474         setCentralWidget(d.tabWidget);
 475         QObject::connect(d.tabWidget->tabbar, SIGNAL(currentChanged(int)),
 476                         this, SLOT(currentTabChanged(int)));
 477 }
 478
 479
 480 void GuiView::updateTab()
 481 {
 482         static std::vector<string> oldnames;
 483         std::vector<string> const& names = theBufferList().getFileNames();
 484
 485         // avoid unnecessary tabbar rebuild:
 486         // check if something has changed
 487         if (oldnames == names)
 488                 return;
 489         else
 490                 oldnames = 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 and clear the function map
 498         d.tabWidget->clearTabbar();
 499         d.funcmap.clear();
 500
 501         string cur_title;
 502         if (view()->buffer()) {
 503                 cur_title = view()->buffer()->fileName();
 504         }
 505
 506         // rebuild tabbar and function map from scratch
 507         if (names.size() == 1) {
 508                 d.funcmap.insert(std::pair<int, FuncRequest>
 509                                                 (0, FuncRequest(LFUN_BUFFER_SWITCH, names[0])));
 510         } else {
 511                 for(size_t i = 0; i < names.size(); i++) {
 512                         tabbar.addTab(lyx::toqstr(onlyFilename(names[i])));
 513                         d.funcmap.insert(std::pair<int, FuncRequest>
 514                                                         (i, FuncRequest(LFUN_BUFFER_SWITCH, names[i])));
 515                         // set current tab
 516                         if (names[i] == cur_title) {
 517                                 tabbar.setCurrentIndex(i);
 518                         }
 519                 }
 520         }
 521         tabbar.blockSignals(false);
 522 }
 523
 524
 525 void GuiView::currentTabChanged (int index)
 526 {
 527         std::map<int, FuncRequest>::const_iterator it = d.funcmap.find(index);
 528         if (it != d.funcmap.end())
 529                 activated(it->second);
 530 }
 531
 532
 533 void GuiView::updateStatusBar()
 534 {
 535         // let the user see the explicit message
 536         if (statusbar_timer_.isActive())
 537                 return;
 538
 539         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 540 }
 541
 542
 543 void GuiView::activated(FuncRequest const & func)
 544 {
 545         dispatch(func);
 546 }
 547
 548
 549 bool GuiView::hasFocus() const
 550 {
 551         return qApp->activeWindow() == this;
 552 }
 553
 554
 555 void  GuiView::updateFloatingGeometry()
 556 {
 557         if (!isMaximized())
 558                 floatingGeometry_ = QRect(x(), y(), width(), height());
 559 }
 560
 561
 562 void GuiView::resizeEvent(QResizeEvent *)
 563 {
 564         updateFloatingGeometry();
 565 }
 566
 567
 568 void GuiView::moveEvent(QMoveEvent *)
 569 {
 570         updateFloatingGeometry();
 571 }
 572
 573
 574 bool GuiView::event(QEvent * e)
 575 {
 576         // Useful debug code:
 577         /*
 578         switch (e->type())
 579         {
 580         case QEvent::WindowActivate:
 581         case QEvent::ActivationChange:
 582         case QEvent::WindowDeactivate:
 583         case QEvent::Paint:
 584         case QEvent::Enter:
 585         case QEvent::Leave:
 586         case QEvent::HoverEnter:
 587         case QEvent::HoverLeave:
 588         case QEvent::HoverMove:
 589         case QEvent::StatusTip:
 590                 break;
 591         default:
 592         */
 593
 594         if (e->type() == QEvent::ShortcutOverride) {
 595                 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 596                 if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
 597                         boost::shared_ptr<QLyXKeySym> sym(new QLyXKeySym);
 598                         sym->set(ke);
 599                         BOOST_ASSERT(work_area_);
 600                         work_area_->processKeySym(sym, key_modifier::none);
 601                         e->accept();
 602                         return true;
 603                 }
 604         }
 605         //} for the debug switch above.
 606
 607         return QMainWindow::event(e);
 608 }
 609
 610
 611 bool GuiView::focusNextPrevChild(bool /*next*/)
 612 {
 613         setFocus();
 614         return true;
 615 }
 616
 617
 618 void GuiView::show()
 619 {
 620         QMainWindow::setWindowTitle(qt_("LyX"));
 621         QMainWindow::show();
 622         updateFloatingGeometry();
 623 }
 624
 625
 626 void GuiView::busy(bool yes)
 627 {
 628         BOOST_ASSERT(work_area_);
 629         static_cast<GuiWorkArea *>(work_area_)->setUpdatesEnabled(!yes);
 630
 631         if (yes) {
 632                 work_area_->stopBlinkingCursor();
 633                 QApplication::setOverrideCursor(Qt::WaitCursor);
 634         }
 635         else {
 636                 work_area_->startBlinkingCursor();
 637                 QApplication::restoreOverrideCursor();
 638         }
 639 }
 640
 641
 642 Toolbars::ToolbarPtr GuiView::makeToolbar(ToolbarBackend::Toolbar const & tbb, bool newline)
 643 {
 644         QLToolbar * Tb = new QLToolbar(tbb, *this);
 645
 646         if (tbb.flags & ToolbarBackend::TOP) {
 647                 if (newline)
 648                         addToolBarBreak(Qt::TopToolBarArea);
 649                 addToolBar(Qt::TopToolBarArea, Tb);
 650         }
 651
 652         if (tbb.flags & ToolbarBackend::BOTTOM) {
 653 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 654 #if (QT_VERSION >= 0x040202)
 655                 if (newline)
 656                         addToolBarBreak(Qt::BottomToolBarArea);
 657 #endif
 658                 addToolBar(Qt::BottomToolBarArea, Tb);
 659         }
 660
 661         if (tbb.flags & ToolbarBackend::LEFT) {
 662 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 663 #if (QT_VERSION >= 0x040202)
 664                 if (newline)
 665                         addToolBarBreak(Qt::LeftToolBarArea);
 666 #endif
 667                 addToolBar(Qt::LeftToolBarArea, Tb);
 668         }
 669
 670         if (tbb.flags & ToolbarBackend::RIGHT) {
 671 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 672 #if (QT_VERSION >= 0x040202)
 673                 if (newline)
 674                         addToolBarBreak(Qt::RightToolBarArea);
 675 #endif
 676                 addToolBar(Qt::RightToolBarArea, Tb);
 677         }
 678
 679         // The following does not work so I can not restore to exact toolbar location
 680         /*
 681         ToolbarSection::ToolbarInfo & info = LyX::ref().session().toolbars().load(tbb.name);
 682         Tb->move(info.posx, info.posy);
 683         */
 684
 685         return Toolbars::ToolbarPtr(Tb);
 686 }
 687
 688 } // namespace frontend
 689 } // namespace lyx
 690
 691 #include "GuiView_moc.cpp"