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 } // namespace anon
  78
  79
  80 class WidgetWithTabBar : public QWidget
  81 {
  82 public:
  83         QTabBar* tabbar;
  84         WidgetWithTabBar(QWidget* w)
  85         {
  86                 tabbar = new QTabBar;
  87                 QVBoxLayout* l = new QVBoxLayout;
  88                 l->addWidget(tabbar);
  89                 l->addWidget(w);
  90                 l->setMargin(0);
  91                 setLayout(l);
  92         }
  93 };
  94
  95
  96 struct GuiView::GuiViewPrivate
  97 {
  98         typedef std::map<int, FuncRequest> FuncMap;
  99         typedef std::pair<int, FuncRequest> FuncMapPair;
 100         typedef std::map<string, QString> NameMap;
 101         typedef std::pair<string, QString> NameMapPair;
 102
 103         FuncMap funcmap;
 104         NameMap namemap;
 105         WidgetWithTabBar* wt;
 106
 107         int posx_offset;
 108         int posy_offset;
 109
 110         GuiViewPrivate() : wt(0), posx_offset(0), posy_offset(0)
 111         {}
 112
 113         unsigned int smallIconSize;
 114         unsigned int normalIconSize;
 115         unsigned int bigIconSize;
 116         // static needed by "New Window"
 117         static unsigned int lastIconSize;
 118
 119         QMenu* toolBarPopup(GuiView *parent)
 120         {
 121                 // FIXME: translation
 122                 QMenu* menu = new QMenu(parent);
 123                 QActionGroup *iconSizeGroup = new QActionGroup(parent);
 124
 125                 QAction *smallIcons = new QAction(iconSizeGroup);
 126                 smallIcons->setText("Small sized icons");
 127                 smallIcons->setCheckable(true);
 128                 QObject::connect(smallIcons, SIGNAL(triggered()), parent, SLOT(smallSizedIcons()));
 129                 menu->addAction(smallIcons);
 130
 131                 QAction *normalIcons = new QAction(iconSizeGroup);
 132                 normalIcons->setText("Normal sized icons");
 133                 normalIcons->setCheckable(true);
 134                 QObject::connect(normalIcons, SIGNAL(triggered()), parent, SLOT(normalSizedIcons()));
 135                 menu->addAction(normalIcons);
 136
 137
 138                 QAction *bigIcons = new QAction(iconSizeGroup);
 139                 bigIcons->setText("Big sized icons");
 140                 bigIcons->setCheckable(true);
 141                 QObject::connect(bigIcons, SIGNAL(triggered()), parent, SLOT(bigSizedIcons()));
 142                 menu->addAction(bigIcons);
 143
 144                 unsigned int cur = parent->iconSize().width();
 145                 if ( cur == parent->d.smallIconSize)
 146                         smallIcons->setChecked(true);
 147                 else if (cur == parent->d.normalIconSize)
 148                         normalIcons->setChecked(true);
 149                 else if (cur == parent->d.bigIconSize)
 150                         bigIcons->setChecked(true);
 151
 152                 return menu;
 153         }
 154 };
 155
 156
 157 unsigned int GuiView::GuiViewPrivate::lastIconSize = 0;
 158
 159
 160 GuiView::GuiView(int id)
 161         : QMainWindow(), LyXView(id), commandbuffer_(0), quitting_by_menu_(false),
 162           d(*new GuiViewPrivate)
 163 {
 164         // Qt bug? signal lastWindowClosed does not work
 165         setAttribute(Qt::WA_QuitOnClose, false);
 166         setAttribute(Qt::WA_DeleteOnClose, true);
 167
 168         // hardcode here the platform specific icon size
 169         d.smallIconSize = 14;   // scaling problems
 170         d.normalIconSize = 20;  // ok, default
 171         d.bigIconSize = 26;             // better for some math icons
 172
 173 #ifndef Q_WS_MACX
 174         //  assign an icon to main form. We do not do it under Qt/Mac,
 175         //  since the icon is provided in the application bundle.
 176         FileName const iconname = libFileSearch("images", "lyx", "xpm");
 177         if (!iconname.empty())
 178                 setWindowIcon(QPixmap(toqstr(iconname.absFilename())));
 179 #endif
 180 }
 181
 182
 183 GuiView::~GuiView()
 184 {
 185         menubar_.reset();
 186         delete &d;
 187 }
 188
 189
 190 void GuiView::close()
 191 {
 192         quitting_by_menu_ = true;
 193         QMainWindow::close();
 194         quitting_by_menu_ = false;
 195 }
 196
 197
 198 void GuiView::setFocus()
 199 {
 200         BOOST_ASSERT(work_area_);
 201         static_cast<GuiWorkArea *>(work_area_)->setFocus();
 202 }
 203
 204
 205 QMenu* GuiView::createPopupMenu()
 206 {
 207         return d.toolBarPopup(this);
 208 }
 209
 210
 211 void GuiView::init()
 212 {
 213         menubar_.reset(new QLMenubar(this, menubackend));
 214         QObject::connect(menuBar(), SIGNAL(triggered(QAction *)),
 215                 this, SLOT(updateMenu(QAction *)));
 216
 217         getToolbars().init();
 218
 219         statusBar()->setSizeGripEnabled(false);
 220
 221         QObject::connect(&statusbar_timer_, SIGNAL(timeout()),
 222                 this, SLOT(update_view_state_qt()));
 223
 224         BOOST_ASSERT(work_area_);
 225         if (!work_area_->bufferView().buffer() && !theBufferList().empty())
 226                 setBuffer(theBufferList().first());
 227
 228         // make sure the buttons are disabled if needed
 229         updateToolbars();
 230         updateLayoutChoice();
 231         updateMenubar();
 232 }
 233
 234
 235 void GuiView::closeEvent(QCloseEvent * close_event)
 236 {
 237         // we may have been called through the close window button
 238         // which bypasses the LFUN machinery.
 239         if (!quitting_by_menu_) {
 240                 if (!theBufferList().quitWriteAll()) {
 241                         close_event->ignore();
 242                         return;
 243                 }
 244         }
 245         if (view()->buffer()) {
 246                 // save cursor position for opened files to .lyx/session
 247                 LyX::ref().session().lastFilePos().save(
 248                         FileName(buffer()->fileName()),
 249                         boost::tie(view()->cursor().pit(),
 250                         view()->cursor().pos()));
 251         }
 252         theApp()->gui().unregisterView(id());
 253         if (theApp()->gui().viewIds().empty())
 254         {
 255                 // this is the place where we leave the frontend.
 256                 // it is the only point at which we start quitting.
 257                 saveGeometry();
 258                 close_event->accept();
 259                 // quit the event loop
 260                 qApp->quit();
 261         }
 262         close_event->accept();
 263 }
 264
 265
 266 void GuiView::saveGeometry()
 267 {
 268         static bool done = false;
 269         if (done)
 270                 return;
 271         else
 272                 done = true;
 273
 274         // FIXME:
 275         // change the ifdef to 'geometry = normalGeometry();' only
 276         // when Trolltech has fixed the broken normalGeometry on X11:
 277         // http://www.trolltech.com/developer/task-tracker/index_html?id=119684+&method=entry
 278         // Then also the moveEvent, resizeEvent, and the
 279         // code for floatingGeometry_ can be removed;
 280         // adjust GuiView::setGeometry()
 281 #ifdef Q_WS_WIN
 282         QRect geometry = normalGeometry();
 283 #else
 284         updateFloatingGeometry();
 285         QRect geometry = floatingGeometry_;
 286 #endif
 287
 288         // save windows size and position
 289         Session & session = LyX::ref().session();
 290         session.sessionInfo().save("WindowWidth", convert<string>(geometry.width()));
 291         session.sessionInfo().save("WindowHeight", convert<string>(geometry.height()));
 292         session.sessionInfo().save("WindowIsMaximized", (isMaximized() ? "yes" : "no"));
 293         session.sessionInfo().save("IconSizeXY", convert<string>(iconSize().width()));
 294         if (lyxrc.geometry_xysaved) {
 295                 session.sessionInfo().save("WindowPosX", convert<string>(geometry.x() + d.posx_offset));
 296                 session.sessionInfo().save("WindowPosY", convert<string>(geometry.y() + d.posy_offset));
 297         }
 298         getToolbars().saveToolbarInfo();
 299 }
 300
 301
 302 void GuiView::setGeometry(unsigned int width,
 303                                                                   unsigned int height,
 304                                                                   int posx, int posy,
 305                                                                   bool maximize,
 306                                                                   unsigned int iconSizeXY,
 307                                                                   const std::string & geometryArg)
 308 {
 309         // use last value (not at startup)
 310         if (d.lastIconSize != 0)
 311                 setIconSize(d.lastIconSize);
 312         else if (iconSizeXY != 0)
 313                 setIconSize(iconSizeXY);
 314         else
 315                 setIconSize(d.normalIconSize);
 316
 317         // only true when the -geometry option was NOT used
 318         if (width != 0 && height != 0) {
 319                 if (posx != -1 && posy != -1) {
 320                         // if there are ever startup positioning problems
 321                         // on a virtual desktop then check the 6 lines below
 322                         // http://doc.trolltech.com/4.2/qdesktopwidget.html
 323                         QDesktopWidget& dw = *qApp->desktop();
 324                         QRect desk = dw.availableGeometry(dw.primaryScreen());
 325                         (posx >= desk.width() ? posx = 50 : true);
 326                         (posy >= desk.height()? posy = 50 : true);
 327 #ifdef Q_WS_WIN
 328                         // FIXME: use setGeometry only when Trolltech has fixed the qt4/X11 bug
 329                         QWidget::setGeometry(posx, posy, width, height);
 330 #else
 331                         resize(width, height);
 332                         move(posx, posy);
 333 #endif
 334                 } else {
 335                         resize(width, height);
 336                 }
 337
 338                 if (maximize)
 339                         setWindowState(Qt::WindowMaximized);
 340         }
 341         else
 342         {
 343                 // FIXME: move this code into parse_geometry() (lyx_main.C)
 344 #ifdef Q_WS_WIN
 345                 int x, y;
 346                 int w, h;
 347                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 348                 re.indexIn( toqstr(geometryArg.c_str()));
 349                 w = re.cap( 1 ).toInt();
 350                 h = re.cap( 2 ).toInt();
 351                 x = re.cap( 3 ).toInt();
 352                 y = re.cap( 4 ).toInt();
 353                 QWidget::setGeometry( x, y, w, h );
 354 #endif
 355         }
 356
 357         show();
 358
 359         // For an unknown reason, the Window title update is not effective for
 360         // the second windows up until it is shown on screen (Qt bug?).
 361         updateWindowTitle();
 362
 363         // after show geometry() has changed (Qt bug?)
 364         // we compensate the drift when storing the position
 365         d.posx_offset = 0;
 366         d.posy_offset = 0;
 367         if (width != 0 && height != 0)
 368                 if (posx != -1 && posy != -1) {
 369 #ifdef Q_WS_WIN
 370                         d.posx_offset = posx - normalGeometry().x();
 371                         d.posy_offset = posy - normalGeometry().y();
 372 #else
 373                         if (!maximize) {
 374                                 d.posx_offset = posx - geometry().x();
 375                                 d.posy_offset = posy - geometry().y();
 376                         }
 377 #endif
 378                 }
 379 }
 380
 381
 382 void GuiView::updateMenu(QAction * /*action*/)
 383 {
 384         menubar_->update();
 385 }
 386
 387
 388 void GuiView::setWindowTitle(docstring const & t, docstring const & it)
 389 {
 390         QString title = windowTitle();
 391         QString new_title = toqstr(t);
 392         if (title != new_title) {
 393                 QMainWindow::setWindowTitle(new_title);
 394                 QMainWindow::setWindowIconText(toqstr(it));
 395         }
 396 }
 397
 398
 399 void GuiView::addCommandBuffer(QToolBar * toolbar)
 400 {
 401         commandbuffer_ = new QCommandBuffer(this, *controlcommand_);
 402         focus_command_buffer.connect(boost::bind(&GuiView::focus_command_widget, this));
 403         toolbar->addWidget(commandbuffer_);
 404 }
 405
 406
 407 void GuiView::message(docstring const & str)
 408 {
 409         statusBar()->showMessage(toqstr(str));
 410         statusbar_timer_.stop();
 411         statusbar_timer_.start(statusbar_timer_value);
 412 }
 413
 414
 415 void GuiView::clearMessage()
 416 {
 417         update_view_state_qt();
 418 }
 419
 420
 421 void GuiView::setIconSize(unsigned int size)
 422 {
 423         d.lastIconSize = size;
 424         QMainWindow::setIconSize(QSize(size, size));
 425 }
 426
 427
 428 void GuiView::smallSizedIcons()
 429 {
 430         setIconSize(d.smallIconSize);
 431 }
 432
 433
 434 void GuiView::normalSizedIcons()
 435 {
 436         setIconSize(d.normalIconSize);
 437 }
 438
 439
 440 void GuiView::bigSizedIcons()
 441 {
 442         setIconSize(d.bigIconSize);
 443 }
 444
 445
 446 void GuiView::focus_command_widget()
 447 {
 448         if (commandbuffer_)
 449                 commandbuffer_->focus_command();
 450 }
 451
 452
 453 void GuiView::update_view_state_qt()
 454 {
 455         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 456         statusbar_timer_.stop();
 457 }
 458
 459
 460 void GuiView::initTab(QWidget* workarea)
 461 {
 462         d.wt = new WidgetWithTabBar(workarea);
 463         setCentralWidget(d.wt);
 464         QObject::connect(d.wt->tabbar, SIGNAL(currentChanged(int)),
 465                         this, SLOT(currentTabChanged(int)));
 466 }
 467
 468
 469 void GuiView::updateTab()
 470 {
 471         QTabBar& tb = *d.wt->tabbar;
 472
 473         // update when all  is done
 474         tb.blockSignals(true);
 475
 476         typedef std::vector<string> Strings;
 477         Strings const names = theBufferList().getFileNames();
 478         size_t n_size = names.size();
 479
 480         Strings addtab;
 481         // show tabs only when there is more
 482         // than one file opened
 483         if (n_size > 1)
 484         {
 485                 for (size_t i = 0; i != n_size; i++)
 486                         if (d.namemap.find(names[i]) == d.namemap.end())
 487                                 addtab.push_back(names.at(i));
 488         }
 489
 490         for(size_t i = 0; i<addtab.size(); i++)
 491         {
 492                 QString tab_name = lyx::toqstr(onlyFilename(addtab.at(i)));
 493                 d.namemap.insert(GuiViewPrivate::NameMapPair(addtab.at(i), tab_name));
 494                 tb.addTab(tab_name);
 495         }
 496
 497         // check if all names showed by the tabs
 498         // are also in the current bufferlist
 499         Strings removetab;
 500         bool notall = true;
 501         if (n_size < 2)
 502                 notall = false;
 503         std::map<string, QString>::iterator tabit = d.namemap.begin();
 504         for (;tabit != d.namemap.end(); ++tabit)
 505         {
 506                 bool found = false;
 507                 for (size_t i = 0; i != n_size; i++)
 508                         if (tabit->first == names.at(i) && notall)
 509                                 found = true;
 510                 if (!found)
 511                         removetab.push_back(tabit->first);
 512         }
 513
 514
 515         // remove tabs
 516         for(size_t i = 0; i<removetab.size(); i++)
 517         {
 518                 if (d.namemap.find(removetab.at(i)) != d.namemap.end())
 519                 {
 520                         tabit = d.namemap.find(removetab.at(i));
 521                         for (int i = 0; i < tb.count(); i++)
 522                                 if (tb.tabText(i) == tabit->second)
 523                                 {
 524                                         tb.removeTab(i);
 525                                         break;
 526                                 }
 527                         d.namemap.erase(tabit);
 528                 }
 529         }
 530
 531         // rebuild func map
 532         if (removetab.size() > 0 || addtab.size() > 0)
 533         {
 534                 d.funcmap.clear();
 535                 tabit = d.namemap.begin();
 536                 for (;tabit != d.namemap.end(); ++tabit)
 537                 {
 538                         QTabBar& tb = *d.wt->tabbar;
 539                         for (int i = 0; i < tb.count(); i++)
 540                         {
 541                                 if (tb.tabText(i) == tabit->second)
 542                                 {
 543                                         FuncRequest func(LFUN_BUFFER_SWITCH, tabit->first);
 544                                         d.funcmap.insert(GuiViewPrivate::FuncMapPair(i, func));
 545                                         break;
 546                                 }
 547                         }
 548                 }
 549         }
 550
 551         // set current tab
 552         if (view()->buffer())
 553         {
 554                 string cur_title = view()->buffer()->fileName();
 555                 if (d.namemap.find(cur_title) != d.namemap.end())
 556                 {
 557                         QString tabname = d.namemap.find(cur_title)->second;
 558                         for (int i = 0; i < tb.count(); i++)
 559                                 if (tb.tabText(i) == tabname)
 560                                 {
 561                                         tb.setCurrentIndex(i);
 562                                         break;
 563                                 }
 564                 }
 565         }
 566
 567         tb.blockSignals(false);
 568         d.wt->update();
 569 }
 570
 571
 572 void GuiView::currentTabChanged (int index)
 573 {
 574         std::map<int, FuncRequest>::const_iterator it = d.funcmap.find(index);
 575         if (it != d.funcmap.end())
 576                 activated(it->second);
 577 }
 578
 579
 580 void GuiView::updateStatusBar()
 581 {
 582         // let the user see the explicit message
 583         if (statusbar_timer_.isActive())
 584                 return;
 585
 586         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 587 }
 588
 589
 590 void GuiView::activated(FuncRequest const & func)
 591 {
 592         dispatch(func);
 593 }
 594
 595
 596 bool GuiView::hasFocus() const
 597 {
 598         return qApp->activeWindow() == this;
 599 }
 600
 601
 602 void  GuiView::updateFloatingGeometry()
 603 {
 604         if (!isMaximized())
 605                 floatingGeometry_ = QRect(x(), y(), width(), height());
 606 }
 607
 608
 609 void GuiView::resizeEvent(QResizeEvent *)
 610 {
 611         updateFloatingGeometry();
 612 }
 613
 614
 615 void GuiView::moveEvent(QMoveEvent *)
 616 {
 617         updateFloatingGeometry();
 618 }
 619
 620
 621 bool GuiView::event(QEvent * e)
 622 {
 623         // Useful debug code:
 624         /*
 625         switch (e->type())
 626         {
 627         case QEvent::WindowActivate:
 628         case QEvent::ActivationChange:
 629         case QEvent::WindowDeactivate:
 630         case QEvent::Paint:
 631         case QEvent::Enter:
 632         case QEvent::Leave:
 633         case QEvent::HoverEnter:
 634         case QEvent::HoverLeave:
 635         case QEvent::HoverMove:
 636         case QEvent::StatusTip:
 637                 break;
 638         default:
 639         */
 640
 641         if (e->type() == QEvent::ShortcutOverride) {
 642                 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 643                 if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
 644                         boost::shared_ptr<QLyXKeySym> sym(new QLyXKeySym);
 645                         sym->set(ke);
 646                         BOOST_ASSERT(work_area_);
 647                         work_area_->processKeySym(sym, key_modifier::none);
 648                         e->accept();
 649                         return true;
 650                 }
 651         }
 652         //} for the debug switch above.
 653
 654         return QMainWindow::event(e);
 655 }
 656
 657
 658 bool GuiView::focusNextPrevChild(bool /*next*/)
 659 {
 660         setFocus();
 661         return true;
 662 }
 663
 664
 665 void GuiView::show()
 666 {
 667         QMainWindow::setWindowTitle(qt_("LyX"));
 668         QMainWindow::show();
 669         updateFloatingGeometry();
 670 }
 671
 672
 673 void GuiView::busy(bool yes)
 674 {
 675         BOOST_ASSERT(work_area_);
 676         static_cast<GuiWorkArea *>(work_area_)->setUpdatesEnabled(!yes);
 677
 678         if (yes) {
 679                 work_area_->stopBlinkingCursor();
 680                 QApplication::setOverrideCursor(Qt::WaitCursor);
 681         }
 682         else {
 683                 work_area_->startBlinkingCursor();
 684                 QApplication::restoreOverrideCursor();
 685         }
 686 }
 687
 688
 689 Toolbars::ToolbarPtr GuiView::makeToolbar(ToolbarBackend::Toolbar const & tbb)
 690 {
 691         QLToolbar * Tb = new QLToolbar(tbb, *this);
 692         //static QLToolbar * lastTb = 0;
 693
 694         if (tbb.flags & ToolbarBackend::TOP) {
 695                         addToolBar(Qt::TopToolBarArea, Tb);
 696                         addToolBarBreak(Qt::TopToolBarArea);
 697         }
 698         if (tbb.flags & ToolbarBackend::BOTTOM) {
 699                 addToolBar(Qt::BottomToolBarArea, Tb);
 700                 /*
 701                 // Qt bug:
 702                 // http://www.trolltech.com/developer/task-tracker/index_html?id=137015&method=entry
 703                 // Doesn't work because the toolbar will evtl. be hidden.
 704                 if (lastTb)
 705                         insertToolBarBreak(lastTb);
 706                 lastTb = Tb;
 707                 */
 708         }
 709         if (tbb.flags & ToolbarBackend::LEFT) {
 710                 addToolBar(Qt::LeftToolBarArea, Tb);
 711         }
 712         if (tbb.flags & ToolbarBackend::RIGHT) {
 713                 addToolBar(Qt::RightToolBarArea, Tb);
 714         }
 715
 716         return Toolbars::ToolbarPtr(Tb);
 717 }
 718
 719 } // namespace frontend
 720 } // namespace lyx
 721
 722 #include "GuiView_moc.cpp"