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 "QLMenubar.h"
  21 #include "QLToolbar.h"
  22 #include "QCommandBuffer.h"
  23 #include "qt_helpers.h"
  24
  25 #include "frontends/Application.h"
  26 #include "frontends/Gui.h"
  27 #include "frontends/WorkArea.h"
  28
  29 #include "support/filetools.h"
  30 #include "support/convert.h"
  31 #include "support/lstrings.h"
  32
  33 #include "BufferView.h"
  34 #include "bufferlist.h"
  35 #include "debug.h"
  36 #include "funcrequest.h"
  37 #include "lyx_cb.h"
  38 #include "lyxrc.h"
  39 #include "lyx_main.h"
  40 #include "session.h"
  41 #include "lyxfunc.h"
  42 #include "MenuBackend.h"
  43 #include "buffer.h"
  44 #include "bufferlist.h"
  45
  46 #include <QAction>
  47 #include <QApplication>
  48 #include <QCloseEvent>
  49 #include <QPixmap>
  50 #include <QStatusBar>
  51 #include <QToolBar>
  52 #include <QTabBar>
  53 #include <QDesktopWidget>
  54 #include <QVBoxLayout>
  55
  56 #include <boost/bind.hpp>
  57
  58 using std::endl;
  59 using std::string;
  60 using std::vector;
  61
  62 namespace lyx {
  63
  64 using support::FileName;
  65 using support::onlyFilename;
  66 using support::subst;
  67 using support::libFileSearch;
  68
  69 namespace frontend {
  70
  71 namespace {
  72
  73 int const statusbar_timer_value = 3000;
  74
  75 } // namespace anon
  76
  77
  78 class WidgetWithTabBar : public QWidget
  79 {
  80 public:
  81         QTabBar* tabbar;
  82         WidgetWithTabBar(QWidget* w)
  83         {
  84                 tabbar = new QTabBar;
  85                 QVBoxLayout* l = new QVBoxLayout;
  86                 l->addWidget(tabbar);
  87                 l->addWidget(w);
  88                 l->setMargin(0);
  89                 setLayout(l);
  90         }
  91 };
  92
  93 struct GuiView::GuiViewPrivate
  94 {
  95         typedef std::map<int, FuncRequest> FuncMap;
  96         typedef std::pair<int, FuncRequest> FuncMapPair;
  97         typedef std::map<string, QString> NameMap;
  98         typedef std::pair<string, QString> NameMapPair;
  99
 100         FuncMap funcmap;
 101         NameMap namemap;
 102         WidgetWithTabBar* wt;
 103
 104         int posx_offset;
 105         int posy_offset;
 106
 107         GuiViewPrivate() : wt(0), posx_offset(0), posy_offset(0)
 108         {}
 109
 110         unsigned int smallIconSize;
 111         unsigned int normalIconSize;
 112         unsigned int bigIconSize;
 113         // static needed by "New Window"
 114         static unsigned int lastIconSize;
 115
 116         QMenu* toolBarPopup(GuiView *parent)
 117         {
 118                 // FIXME: translation
 119                 QMenu* menu = new QMenu(parent);
 120                 QActionGroup *iconSizeGroup = new QActionGroup(parent);
 121
 122                 QAction *smallIcons = new QAction(iconSizeGroup);
 123                 smallIcons->setText("Small sized icons");
 124                 smallIcons->setCheckable(true);
 125                 QObject::connect(smallIcons, SIGNAL(triggered()), parent, SLOT(smallSizedIcons()));
 126                 menu->addAction(smallIcons);
 127
 128                 QAction *normalIcons = new QAction(iconSizeGroup);
 129                 normalIcons->setText("Normal sized icons");
 130                 normalIcons->setCheckable(true);
 131                 QObject::connect(normalIcons, SIGNAL(triggered()), parent, SLOT(normalSizedIcons()));
 132                 menu->addAction(normalIcons);
 133
 134
 135                 QAction *bigIcons = new QAction(iconSizeGroup);
 136                 bigIcons->setText("Big sized icons");
 137                 bigIcons->setCheckable(true);
 138                 QObject::connect(bigIcons, SIGNAL(triggered()), parent, SLOT(bigSizedIcons()));
 139                 menu->addAction(bigIcons);
 140
 141                 unsigned int cur = parent->iconSize().width();
 142                 if ( cur == parent->d.smallIconSize)
 143                         smallIcons->setChecked(true);
 144                 else if (cur == parent->d.normalIconSize)
 145                         normalIcons->setChecked(true);
 146                 else if (cur == parent->d.bigIconSize)
 147                         bigIcons->setChecked(true);
 148
 149                 return menu;
 150         }
 151 };
 152
 153 unsigned int GuiView::GuiViewPrivate::lastIconSize = 0;
 154
 155 GuiView::GuiView(int id)
 156         : QMainWindow(), LyXView(id), commandbuffer_(0), d(*new GuiViewPrivate)
 157 {
 158         // Qt bug? signal lastWindowClosed does not work
 159         setAttribute(Qt::WA_QuitOnClose, false);
 160         // FIXME: the following statement avoids memory leaks but produces a
 161         //        crash after a new window has been closed (click into the menu)
 162         //setAttribute(Qt::WA_DeleteOnClose, true);
 163
 164         // hardcode here the platform specific icon size
 165         d.smallIconSize = 14;   // scaling problems
 166         d.normalIconSize = 20;  // ok, default
 167         d.bigIconSize = 26;             // better for some math icons
 168
 169         //bufferview_.reset(new BufferView(this, width, height));
 170
 171 #ifndef Q_WS_MACX
 172         //  assign an icon to main form. We do not do it under Qt/Mac,
 173         //  since the icon is provided in the application bundle.
 174         FileName const iconname = libFileSearch("images", "lyx", "xpm");
 175         if (!iconname.empty())
 176                 setWindowIcon(QPixmap(toqstr(iconname.absFilename())));
 177 #endif
 178 }
 179
 180
 181 GuiView::~GuiView()
 182 {
 183         delete &d;
 184 }
 185
 186
 187 void GuiView::close()
 188 {
 189         QMainWindow::close();
 190 }
 191
 192 QMenu* GuiView::createPopupMenu()
 193 {
 194         return d.toolBarPopup(this);
 195 }
 196
 197 void GuiView::init()
 198 {
 199         menubar_.reset(new QLMenubar(this, menubackend));
 200         QObject::connect(menuBar(), SIGNAL(triggered(QAction *)),
 201                 this, SLOT(updateMenu(QAction *)));
 202
 203         getToolbars().init();
 204
 205         statusBar()->setSizeGripEnabled(false);
 206
 207         QObject::connect(&statusbar_timer_, SIGNAL(timeout()),
 208                 this, SLOT(update_view_state_qt()));
 209
 210         if (!work_area_->bufferView().buffer() && !theBufferList().empty())
 211                 setBuffer(theBufferList().first());
 212
 213         // make sure the buttons are disabled if needed
 214         updateToolbars();
 215         updateLayoutChoice();
 216         updateMenubar();
 217
 218 #ifdef Q_WS_MACX
 219         // Qt docs:
 220         // "quit or exit        Application Menu | Quit <application name>
 221         // If this entry is not found a default Quit item will be created to call
 222         // QApplication::quit()"
 223         QMenu * lyxMenu =  menuBar()->addMenu("&LyX");
 224         QAction * quitAction = new QAction(tr("&Quit"), this);
 225         lyxMenu->addAction(quitAction);
 226         connect(quitAction, SIGNAL(triggered()),this, SLOT(macQuit()));
 227 #endif
 228
 229 }
 230
 231
 232 void GuiView::macQuit()
 233 {
 234         // this slot is only called on Mac
 235         dispatch(FuncRequest(LFUN_LYX_QUIT));
 236 }
 237
 238
 239 void GuiView::closeEvent(QCloseEvent * close_event)
 240 {
 241         theApp()->gui().unregisterView(id());
 242         if (theApp()->gui().viewIds().empty())
 243         {
 244                 // this is the place where we leave the frontend.
 245                 // it is the only point at which we start quitting.
 246                 saveGeometry();
 247                 theBufferList().quitWriteAll();
 248                 close_event->accept();
 249                 // quit the event loop
 250                 qApp->quit();
 251         }
 252         close_event->accept();
 253 }
 254
 255 void GuiView::saveGeometry()
 256 {
 257         static bool done = false;
 258         if (done)
 259                 return;
 260         else
 261                 done = true;
 262
 263         // FIXME:
 264         // change the ifdef to 'geometry = normalGeometry();' only
 265         // when Trolltech has fixed the broken normalGeometry on X11:
 266         // http://www.trolltech.com/developer/task-tracker/index_html?id=119684+&method=entry
 267         // Then also the moveEvent, resizeEvent, and the
 268         // code for floatingGeometry_ can be removed;
 269         // adjust GuiView::setGeometry()
 270 #ifdef Q_WS_WIN
 271         QRect geometry = normalGeometry();
 272 #else
 273         updateFloatingGeometry();
 274         QRect geometry = floatingGeometry_;
 275 #endif
 276
 277         // save windows size and position
 278         Session & session = LyX::ref().session();
 279         session.sessionInfo().save("WindowWidth", convert<string>(geometry.width()));
 280         session.sessionInfo().save("WindowHeight", convert<string>(geometry.height()));
 281         session.sessionInfo().save("WindowIsMaximized", (isMaximized() ? "yes" : "no"));
 282         session.sessionInfo().save("IconSizeXY", convert<string>(iconSize().width()));
 283         if (lyxrc.geometry_xysaved) {
 284                 session.sessionInfo().save("WindowPosX", convert<string>(geometry.x() + d.posx_offset));
 285                 session.sessionInfo().save("WindowPosY", convert<string>(geometry.y() + d.posy_offset));
 286         }
 287         getToolbars().saveToolbarInfo();
 288 }
 289
 290 void GuiView::setGeometry(unsigned int width,
 291                                                                   unsigned int height,
 292                                                                   int posx, int posy,
 293                                                                   bool maximize,
 294                                                                   unsigned int iconSizeXY,
 295                                                                   const std::string & geometryArg)
 296 {
 297         // use last value (not at startup)
 298         if (d.lastIconSize != 0)
 299                 setIconSize(d.lastIconSize);
 300         else if (iconSizeXY != 0)
 301                 setIconSize(iconSizeXY);
 302         else
 303                 setIconSize(d.normalIconSize);
 304
 305         // only true when the -geometry option was NOT used
 306         if (width != 0 && height != 0) {
 307                 if (posx != -1 && posy != -1) {
 308                         // if there are ever startup positioning problems
 309                         // on a virtual desktop then check the 6 lines below
 310                         // http://doc.trolltech.com/4.2/qdesktopwidget.html
 311                         QDesktopWidget& dw = *qApp->desktop();
 312                         QRect desk = dw.availableGeometry(dw.primaryScreen());
 313                         (posx >= desk.width() ? posx = 50 : true);
 314                         (posy >= desk.height()? posy = 50 : true);
 315 #ifdef Q_WS_WIN
 316                         // FIXME: use setGeometry only when Trolltech has fixed the qt4/X11 bug
 317                         QWidget::setGeometry(posx, posy, width, height);
 318 #else
 319                         resize(width, height);
 320                         move(posx, posy);
 321 #endif
 322                 } else {
 323                         resize(width, height);
 324                 }
 325
 326                 if (maximize)
 327                         setWindowState(Qt::WindowMaximized);
 328         }
 329         else
 330         {
 331                 // FIXME: move this code into parse_geometry() (lyx_main.C)
 332 #ifdef Q_WS_WIN
 333                 int x, y;
 334                 int w, h;
 335                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 336                 re.indexIn( toqstr(geometryArg.c_str()));
 337                 w = re.cap( 1 ).toInt();
 338                 h = re.cap( 2 ).toInt();
 339                 x = re.cap( 3 ).toInt();
 340                 y = re.cap( 4 ).toInt();
 341                 QWidget::setGeometry( x, y, w, h );
 342 #endif
 343         }
 344
 345         show();
 346
 347         // For an unknown reason, the Window title update is not effective for
 348         // the second windows up until it is shown on screen (Qt bug?).
 349         updateWindowTitle();
 350
 351         // after show geometry() has changed (Qt bug?)
 352         // we compensate the drift when storing the position
 353         d.posx_offset = 0;
 354         d.posy_offset = 0;
 355         if (width != 0 && height != 0)
 356                 if (posx != -1 && posy != -1) {
 357 #ifdef Q_WS_WIN
 358                         d.posx_offset = posx - normalGeometry().x();
 359                         d.posy_offset = posy - normalGeometry().y();
 360 #else
 361                         if (!maximize) {
 362                                 d.posx_offset = posx - geometry().x();
 363                                 d.posy_offset = posy - geometry().y();
 364                         }
 365 #endif
 366                 }
 367 }
 368
 369
 370 void GuiView::updateMenu(QAction * /*action*/)
 371 {
 372         menubar_->update();
 373 }
 374
 375
 376 void GuiView::setWindowTitle(docstring const & t, docstring const & it)
 377 {
 378         QString title = windowTitle();
 379         QString new_title = toqstr(t);
 380         if (title != new_title) {
 381                 QMainWindow::setWindowTitle(new_title);
 382                 QMainWindow::setWindowIconText(toqstr(it));
 383         }
 384 }
 385
 386
 387 void GuiView::addCommandBuffer(QToolBar * toolbar)
 388 {
 389         commandbuffer_ = new QCommandBuffer(this, *controlcommand_);
 390         focus_command_buffer.connect(boost::bind(&GuiView::focus_command_widget, this));
 391         toolbar->addWidget(commandbuffer_);
 392 }
 393
 394
 395 void GuiView::message(docstring const & str)
 396 {
 397         statusBar()->showMessage(toqstr(str));
 398         statusbar_timer_.stop();
 399         statusbar_timer_.start(statusbar_timer_value);
 400 }
 401
 402
 403 void GuiView::clearMessage()
 404 {
 405         update_view_state_qt();
 406 }
 407
 408 void GuiView::setIconSize(unsigned int size)
 409 {
 410         d.lastIconSize = size;
 411         QMainWindow::setIconSize(QSize(size, size));
 412 }
 413
 414 void GuiView::smallSizedIcons()
 415 {
 416         setIconSize(d.smallIconSize);
 417 }
 418
 419 void GuiView::normalSizedIcons()
 420 {
 421         setIconSize(d.normalIconSize);
 422 }
 423
 424 void GuiView::bigSizedIcons()
 425 {
 426         setIconSize(d.bigIconSize);
 427 }
 428
 429
 430 void GuiView::focus_command_widget()
 431 {
 432         if (commandbuffer_)
 433                 commandbuffer_->focus_command();
 434 }
 435
 436
 437 void GuiView::update_view_state_qt()
 438 {
 439         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 440         statusbar_timer_.stop();
 441 }
 442
 443 void GuiView::initTab(QWidget* workarea)
 444 {
 445         d.wt = new WidgetWithTabBar(workarea);
 446         setCentralWidget(d.wt);
 447         QObject::connect(d.wt->tabbar, SIGNAL(currentChanged(int)),
 448                         this, SLOT(currentTabChanged(int)));
 449 }
 450
 451 void GuiView::updateTab()
 452 {
 453         QTabBar& tb = *d.wt->tabbar;
 454
 455         // update when all  is done
 456         tb.blockSignals(true);
 457
 458         typedef std::vector<string> Strings;
 459         Strings const names = theBufferList().getFileNames();
 460         size_t n_size = names.size();
 461
 462         Strings addtab;
 463         // show tabs only when there is more
 464         // than one file opened
 465         if (n_size > 1)
 466         {
 467                 for (size_t i = 0; i != n_size; i++)
 468                         if (d.namemap.find(names[i]) == d.namemap.end())
 469                                 addtab.push_back(names.at(i));
 470         }
 471
 472         for(size_t i = 0; i<addtab.size(); i++)
 473         {
 474                 QString tab_name = lyx::toqstr(onlyFilename(addtab.at(i)));
 475                 d.namemap.insert(GuiViewPrivate::NameMapPair(addtab.at(i), tab_name));
 476                 tb.addTab(tab_name);
 477         }
 478
 479         // check if all names showed by the tabs
 480         // are also in the current bufferlist
 481         Strings removetab;
 482         bool notall = true;
 483         if (n_size < 2)
 484                 notall = false;
 485         std::map<string, QString>::iterator tabit = d.namemap.begin();
 486         for (;tabit != d.namemap.end(); ++tabit)
 487         {
 488                 bool found = false;
 489                 for (size_t i = 0; i != n_size; i++)
 490                         if (tabit->first == names.at(i) && notall)
 491                                 found = true;
 492                 if (!found)
 493                         removetab.push_back(tabit->first);
 494         }
 495
 496
 497         // remove tabs
 498         for(size_t i = 0; i<removetab.size(); i++)
 499         {
 500                 if (d.namemap.find(removetab.at(i)) != d.namemap.end())
 501                 {
 502                         tabit = d.namemap.find(removetab.at(i));
 503                         for (int i = 0; i < tb.count(); i++)
 504                                 if (tb.tabText(i) == tabit->second)
 505                                 {
 506                                         tb.removeTab(i);
 507                                         break;
 508                                 }
 509                         d.namemap.erase(tabit);
 510                 }
 511         }
 512
 513         // rebuild func map
 514         if (removetab.size() > 0 || addtab.size() > 0)
 515         {
 516                 d.funcmap.clear();
 517                 tabit = d.namemap.begin();
 518                 for (;tabit != d.namemap.end(); ++tabit)
 519                 {
 520                         QTabBar& tb = *d.wt->tabbar;
 521                         for (int i = 0; i < tb.count(); i++)
 522                         {
 523                                 if (tb.tabText(i) == tabit->second)
 524                                 {
 525                                         FuncRequest func(LFUN_BUFFER_SWITCH, tabit->first);
 526                                         d.funcmap.insert(GuiViewPrivate::FuncMapPair(i, func));
 527                                         break;
 528                                 }
 529                         }
 530                 }
 531         }
 532
 533         // set current tab
 534         if (view()->buffer())
 535         {
 536                 string cur_title = view()->buffer()->fileName();
 537                 if (d.namemap.find(cur_title) != d.namemap.end())
 538                 {
 539                         QString tabname = d.namemap.find(cur_title)->second;
 540                         for (int i = 0; i < tb.count(); i++)
 541                                 if (tb.tabText(i) == tabname)
 542                                 {
 543                                         tb.setCurrentIndex(i);
 544                                         break;
 545                                 }
 546                 }
 547         }
 548
 549         tb.blockSignals(false);
 550         d.wt->update();
 551 }
 552
 553 void GuiView::currentTabChanged (int index)
 554 {
 555         std::map<int, FuncRequest>::const_iterator it = d.funcmap.find(index);
 556         if (it != d.funcmap.end())
 557                 activated(it->second);
 558 }
 559
 560
 561 void GuiView::updateStatusBar()
 562 {
 563         // let the user see the explicit message
 564         if (statusbar_timer_.isActive())
 565                 return;
 566
 567         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 568 }
 569
 570
 571 void GuiView::activated(FuncRequest const & func)
 572 {
 573         dispatch(func);
 574 }
 575
 576
 577 bool GuiView::hasFocus() const
 578 {
 579         return qApp->activeWindow() == this;
 580 }
 581
 582
 583 void  GuiView::updateFloatingGeometry()
 584 {
 585         if (!isMaximized())
 586                 floatingGeometry_ = QRect(x(), y(), width(), height());
 587 }
 588
 589
 590 void GuiView::resizeEvent(QResizeEvent *)
 591 {
 592         updateFloatingGeometry();
 593 }
 594
 595
 596 void GuiView::moveEvent(QMoveEvent *)
 597 {
 598         updateFloatingGeometry();
 599 }
 600
 601
 602 void GuiView::show()
 603 {
 604         QMainWindow::setWindowTitle(qt_("LyX"));
 605         QMainWindow::show();
 606         updateFloatingGeometry();
 607 }
 608
 609
 610 void GuiView::busy(bool yes)
 611 {
 612         static_cast<GuiWorkArea *>(work_area_)->setUpdatesEnabled(!yes);
 613
 614         if (yes) {
 615                 work_area_->stopBlinkingCursor();
 616                 QApplication::setOverrideCursor(Qt::WaitCursor);
 617         }
 618         else {
 619                 work_area_->startBlinkingCursor();
 620                 QApplication::restoreOverrideCursor();
 621         }
 622 }
 623
 624
 625 Toolbars::ToolbarPtr GuiView::makeToolbar(ToolbarBackend::Toolbar const & tbb)
 626 {
 627         QLToolbar * Tb = new QLToolbar(tbb, *this);
 628         //static QLToolbar * lastTb = 0;
 629
 630         if (tbb.flags & ToolbarBackend::TOP) {
 631                         addToolBar(Qt::TopToolBarArea, Tb);
 632                         addToolBarBreak(Qt::TopToolBarArea);
 633         }
 634         if (tbb.flags & ToolbarBackend::BOTTOM) {
 635                 addToolBar(Qt::BottomToolBarArea, Tb);
 636                 /*
 637                 // Qt bug:
 638                 // http://www.trolltech.com/developer/task-tracker/index_html?id=137015&method=entry
 639                 // Doesn't work because the toolbar will evtl. be hidden.
 640                 if (lastTb)
 641                         insertToolBarBreak(lastTb);
 642                 lastTb = Tb;
 643                 */
 644         }
 645         if (tbb.flags & ToolbarBackend::LEFT) {
 646                 addToolBar(Qt::LeftToolBarArea, Tb);
 647         }
 648         if (tbb.flags & ToolbarBackend::RIGHT) {
 649                 addToolBar(Qt::RightToolBarArea, Tb);
 650         }
 651
 652         return Toolbars::ToolbarPtr(Tb);
 653 }
 654
 655 } // namespace frontend
 656 } // namespace lyx
 657
 658 #include "GuiView_moc.cpp"