]> git.lyx.org Git - lyx.git/blobdiff - src/frontends/qt4/GuiWorkArea.cpp
Do not show master's errors if compiling child
[lyx.git] / src / frontends / qt4 / GuiWorkArea.cpp
index 69090b32921e4021f83f31adff9976feab2bc66d..8bf5242b33cc6f1ff1ced7bccf6d8658bde90d3d 100644 (file)
@@ -47,7 +47,6 @@
 #include "support/convert.h"
 #include "support/debug.h"
 #include "support/gettext.h"
-#include "support/FileName.h"
 #include "support/lassert.h"
 #include "support/TempFile.h"
 
@@ -213,8 +212,8 @@ public:
        int cursorWidth() const { return cursor_width_; }
        void recomputeWidth() {
                cursor_width_ = lyxrc.cursor_width
-                       ? lyxrc.cursor_width 
-                       : 1 + int((lyxrc.zoom + 50) / 200.0);
+                       ? lyxrc.cursor_width
+                       : 1 + int((lyxrc.currentZoom + 50) / 200.0);
        }
 
        QRect const & rect() { return rect_; }
@@ -234,7 +233,7 @@ private:
        QRect rect_;
        /// x position (were the vertical line is drawn)
        int x_;
-       
+
        int cursor_width_;
 };
 
@@ -247,24 +246,27 @@ SyntheticMouseEvent::SyntheticMouseEvent()
 
 
 GuiWorkArea::Private::Private(GuiWorkArea * parent)
-: p(parent), screen_(0), buffer_view_(0), read_only_(false), lyx_view_(0),
-cursor_visible_(false), cursor_(0),
-need_resize_(false), schedule_redraw_(false), preedit_lines_(1),
-pixel_ratio_(1.0),
-completer_(new GuiCompleter(p, p)), dialog_mode_(false)
+: p(parent), screen_(0), buffer_view_(0), lyx_view_(0),
+  cursor_visible_(false), cursor_(0),
+  need_resize_(false), schedule_redraw_(false), preedit_lines_(1),
+  pixel_ratio_(1.0),
+  completer_(new GuiCompleter(p, p)), dialog_mode_(false), shell_escape_(false),
+  read_only_(false), clean_(true), externally_modified_(false)
 {
 }
 
 
 GuiWorkArea::GuiWorkArea(QWidget * /* w */)
-: d(new Private(this)) 
+: d(new Private(this))
 {
+       new CompressorProxy(this); // not a leak
 }
 
 
 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
 : d(new Private(this))
 {
+       new CompressorProxy(this); // not a leak
        setGuiView(gv);
        buffer.params().display_pixel_ratio = theGuiApp()->pixelRatio();
        setBuffer(buffer);
@@ -275,7 +277,7 @@ GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
 double GuiWorkArea::pixelRatio() const
 {
 #if QT_VERSION >= 0x050000
-       return devicePixelRatio();
+       return qt_scale_factor * devicePixelRatio();
 #else
        return 1.0;
 #endif
@@ -320,13 +322,10 @@ void GuiWorkArea::init()
 
        d->setCursorShape(Qt::IBeamCursor);
 
-       d->synthetic_mouse_event_.timeout.timeout.connect(
-               bind(&GuiWorkArea::generateSyntheticMouseEvent,
-                                       this));
-
-       // Initialize the vertical Scroll Bar
-       QObject::connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
-               this, SLOT(scrollTo(int)));
+       // This connection is closed at the same time as this is destroyed.
+       d->synthetic_mouse_event_.timeout.timeout.connect([this](){
+                       generateSyntheticMouseEvent();
+               });
 
        LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
                << "  viewport height: " << viewport()->height());
@@ -341,7 +340,10 @@ void GuiWorkArea::init()
 
 GuiWorkArea::~GuiWorkArea()
 {
-       d->buffer_view_->buffer().workAreaManager().remove(this);
+       // If something is wrong with the buffer, we can ignore it safely
+       try {
+               d->buffer_view_->buffer().workAreaManager().remove(this);
+       } catch(...) {}
        delete d->screen_;
        delete d->buffer_view_;
        delete d->cursor_;
@@ -366,7 +368,7 @@ void GuiWorkArea::Private::setCursorShape(Qt::CursorShape shape)
 
 void GuiWorkArea::Private::updateCursorShape()
 {
-       setCursorShape(buffer_view_->clickableInset() 
+       setCursorShape(buffer_view_->clickableInset()
                ? Qt::PointingHandCursor : Qt::IBeamCursor);
 }
 
@@ -392,6 +394,7 @@ void GuiWorkArea::setBuffer(Buffer & buffer)
        if (buffer.text().paragraphs().size() > 4)
                setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
        QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
+       Q_EMIT bufferViewChanged();
 }
 
 
@@ -670,14 +673,18 @@ void GuiWorkArea::toggleCursor()
 
 void GuiWorkArea::Private::updateScrollbar()
 {
+       // Prevent setRange() and setSliderPosition from causing recursive calls via
+       // the signal valueChanged. (#10311)
+       QObject::disconnect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
+                           p, SLOT(scrollTo(int)));
        ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
-       // Block signals to prevent setRange() and setSliderPosition from causing
-       // recursive calls via the signal valueChanged. (#10311)
-       QSignalBlocker blocker(p->verticalScrollBar());
        p->verticalScrollBar()->setRange(scroll_.min, scroll_.max);
        p->verticalScrollBar()->setPageStep(scroll_.page_step);
        p->verticalScrollBar()->setSingleStep(scroll_.single_step);
        p->verticalScrollBar()->setSliderPosition(0);
+       // Connect to the vertical scroll bar
+       QObject::connect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
+                        p, SLOT(scrollTo(int)));
 }
 
 
@@ -770,9 +777,9 @@ void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
                }
                name = d->buffer_view_->contextMenu(pos.x(), pos.y());
        }
-       
+
        if (name.empty()) {
-               QAbstractScrollArea::contextMenuEvent(e);
+               e->accept();
                return;
        }
        // always show mnemonics when the keyboard is used to show the context menu
@@ -780,7 +787,7 @@ void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
        bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
        QMenu * menu = guiApp->menus().menu(toqstr(name), *d->lyx_view_, keyboard);
        if (!menu) {
-               QAbstractScrollArea::contextMenuEvent(e);
+               e->accept();
                return;
        }
        // Position the menu to the right.
@@ -886,7 +893,7 @@ void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
                        // in the first place.
                        return;
                }
-               
+
                d->synthetic_mouse_event_.restart_timeout = true;
                d->synthetic_mouse_event_.timeout.start();
                // Fall through to handle this event...
@@ -971,7 +978,7 @@ void GuiWorkArea::generateSyntheticMouseEvent()
                if (up || down) {
                        int dist = up ? -e_y : e_y - wh;
                        time = max(min(200, 250000 / (dist * dist)), 1) ;
-                       
+
                        if (time < 40) {
                                step = 80000 / (time * time);
                                time = 40;
@@ -999,12 +1006,18 @@ void GuiWorkArea::generateSyntheticMouseEvent()
 
        // In which paragraph do we have to set the cursor ?
        Cursor & cur = d->buffer_view_->cursor();
-       // FIXME: we don't know howto handle math.
+       // FIXME: we don't know how to handle math.
        Text * text = cur.text();
        if (!text)
                return;
        TextMetrics const & tm = d->buffer_view_->textMetrics(text);
 
+       // Quit gracefully if there are no metrics, since otherwise next
+       // line would crash (bug #10324).
+       // This situation seems related to a (not yet understood) timing problem.
+       if (tm.empty())
+               return;
+
        pair<pit_type, const ParagraphMetrics *> pp = up ? tm.first() : tm.last();
        ParagraphMetrics const & pm = *pp.second;
        pit_type const pit = pp.first;
@@ -1039,6 +1052,39 @@ void GuiWorkArea::generateSyntheticMouseEvent()
 }
 
 
+// CompressorProxy adapted from Kuba Ober https://stackoverflow.com/a/21006207
+CompressorProxy::CompressorProxy(GuiWorkArea * wa) : QObject(wa), flag_(false)
+{
+       qRegisterMetaType<KeySymbol>("KeySymbol");
+       qRegisterMetaType<KeyModifier>("KeyModifier");
+       connect(wa, SIGNAL(compressKeySym(KeySymbol, KeyModifier, bool)),
+               this, SLOT(slot(KeySymbol, KeyModifier, bool)),
+               Qt::QueuedConnection);
+       connect(this, SIGNAL(signal(KeySymbol, KeyModifier)),
+               wa, SLOT(processKeySym(KeySymbol, KeyModifier)));
+}
+
+
+bool CompressorProxy::emitCheck(bool isAutoRepeat)
+{
+       flag_ = true;
+       if (isAutoRepeat)
+               QCoreApplication::sendPostedEvents(this, QEvent::MetaCall); // recurse
+       bool result = flag_;
+       flag_ = false;
+       return result;
+}
+
+
+void CompressorProxy::slot(KeySymbol sym, KeyModifier mod, bool isAutoRepeat)
+{
+       if (emitCheck(isAutoRepeat))
+               Q_EMIT signal(sym, mod);
+       else
+               LYXERR(Debug::KEY, "system is busy: autoRepeat key event ignored");
+}
+
+
 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
 {
        // this is also called for ShortcutOverride events. In this case, one must
@@ -1046,13 +1092,16 @@ void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
        bool const act = (ev->type() != QEvent::ShortcutOverride);
 
        // Do not process here some keys if dialog_mode_ is set
-       if (d->dialog_mode_
+       bool const for_dialog_mode = d->dialog_mode_
                && (ev->modifiers() == Qt::NoModifier
                    || ev->modifiers() == Qt::ShiftModifier)
                && (ev->key() == Qt::Key_Escape
                    || ev->key() == Qt::Key_Enter
-                   || ev->key() == Qt::Key_Return)
-           ) {
+                   || ev->key() == Qt::Key_Return);
+       // also do not use autoRepeat to input shortcuts
+       bool const autoRepeat = ev->isAutoRepeat();
+
+       if (for_dialog_mode || (!act && autoRepeat)) {
                ev->ignore();
                return;
        }
@@ -1069,51 +1118,31 @@ void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
                }
        }
 
-       // do nothing if there are other events
-       // (the auto repeated events come too fast)
-       // it looks like this is only needed on X11
-#if defined(Q_WS_X11) || defined(QPA_XCB)
-       // FIXME: this is a weird way to implement event compression. Also, this is
-       // broken with IBus.
-       if (act && qApp->hasPendingEvents() && ev->isAutoRepeat()) {
-               switch (ev->key()) {
-               case Qt::Key_PageDown:
-               case Qt::Key_PageUp:
-               case Qt::Key_Left:
-               case Qt::Key_Right:
-               case Qt::Key_Up:
-               case Qt::Key_Down:
-                       LYXERR(Debug::KEY, "system is busy: scroll key event ignored");
-                       ev->ignore();
-                       return;
-               }
-       }
-#endif
-
        KeyModifier const m = q_key_state(ev->modifiers());
 
-       std::string str;
-       if (m & ShiftModifier)
-               str += "Shift-";
-       if (m & ControlModifier)
-               str += "Control-";
-       if (m & AltModifier)
-               str += "Alt-";
-       if (m & MetaModifier)
-               str += "Meta-";
-
-       if (act)
+       if (act && lyxerr.debugging(Debug::KEY)) {
+               std::string str;
+               if (m & ShiftModifier)
+                       str += "Shift-";
+               if (m & ControlModifier)
+                       str += "Control-";
+               if (m & AltModifier)
+                       str += "Alt-";
+               if (m & MetaModifier)
+                       str += "Meta-";
                LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
                       << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
                       << " keyState: " << str);
+       }
 
        KeySymbol sym;
        setKeySymbol(&sym, ev);
        if (sym.isOK()) {
                if (act) {
-                       processKeySym(sym, m);
+                       Q_EMIT compressKeySym(sym, m, autoRepeat);
                        ev->accept();
                } else
+                       // here, !autoRepeat, as determined at the beginning
                        ev->setAccepted(queryKeySym(sym, m));
        } else {
                ev->ignore();
@@ -1263,6 +1292,7 @@ void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
        GuiPainter pain(d->screen_, pixelRatio());
        d->buffer_view_->updateMetrics();
        d->buffer_view_->draw(pain);
+       // FIXME: shall we use real_current_font here? (see #10478)
        FontInfo font = d->buffer_view_->cursor().getFont().fontInfo();
        FontMetrics const & fm = theFontMetrics(font);
        int height = fm.maxHeight();
@@ -1387,33 +1417,20 @@ QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
 
 void GuiWorkArea::updateWindowTitle()
 {
-       docstring maximize_title;
-       docstring minimize_title;
-
-       Buffer const & buf = d->buffer_view_->buffer();
-       FileName const file_name = buf.fileName();
-       if (!file_name.empty()) {
-               maximize_title = file_name.displayName(130);
-               minimize_title = from_utf8(file_name.onlyFileName());
-               if (buf.lyxvc().inUse()) {
-                       if (buf.lyxvc().locking())
-                               maximize_title +=  _(" (version control, locking)");
-                       else
-                               maximize_title +=  _(" (version control)");
-               }
-               if (!buf.isClean()) {
-                       maximize_title += _(" (changed)");
-                       minimize_title += char_type('*');
-               }
-               if (buf.isReadonly())
-                       maximize_title += _(" (read only)");
-       }
-
-       QString const new_title = toqstr(maximize_title);
-       if (new_title != windowTitle()) {
-               QWidget::setWindowTitle(new_title);
-               QWidget::setWindowIconText(toqstr(minimize_title));
-               titleChanged(this);
+       Buffer const & buf = bufferView().buffer();
+       if (buf.fileName() != d->file_name_
+           || buf.params().shell_escape != d->shell_escape_
+           || buf.hasReadonlyFlag() != d->read_only_
+           || buf.lyxvc().vcstatus() != d->vc_status_
+           || buf.isClean() != d->clean_
+           || buf.notifiesExternalModification() != d->externally_modified_) {
+               d->file_name_ = buf.fileName();
+               d->shell_escape_ = buf.params().shell_escape;
+               d->read_only_ = buf.hasReadonlyFlag();
+               d->vc_status_ = buf.lyxvc().vcstatus();
+               d->clean_ = buf.isClean();
+               d->externally_modified_ = buf.notifiesExternalModification();
+               Q_EMIT titleChanged(this);
        }
 }
 
@@ -1629,7 +1646,7 @@ void TabWorkArea::paintEvent(QPaintEvent * event)
        if (tabBar()->isVisible()) {
                QTabWidget::paintEvent(event);
        } else {
-               // Prevent the selected tab to influence the 
+               // Prevent the selected tab to influence the
                // painting of the frame of the tab widget.
                // This is needed for gtk style in Qt.
                QStylePainter p(this);
@@ -1696,26 +1713,41 @@ void TabWorkArea::showBar(bool show)
 }
 
 
-GuiWorkArea * TabWorkArea::currentWorkArea()
+GuiWorkAreaContainer * TabWorkArea::widget(int index) const
 {
-       if (count() == 0)
-               return 0;
+       QWidget * w = QTabWidget::widget(index);
+       if (!w)
+               return nullptr;
+       GuiWorkAreaContainer * wac = dynamic_cast<GuiWorkAreaContainer *>(w);
+       LATTEST(wac);
+       return wac;
+}
 
-       GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
-       LATTEST(wa);
-       return wa;
+
+GuiWorkAreaContainer * TabWorkArea::currentWidget() const
+{
+       return widget(currentIndex());
 }
 
 
-GuiWorkArea * TabWorkArea::workArea(int index)
+GuiWorkArea * TabWorkArea::workArea(int index) const
 {
-       return dynamic_cast<GuiWorkArea *>(widget(index));
+       GuiWorkAreaContainer * w = widget(index);
+       if (!w)
+               return nullptr;
+       return w->workArea();
 }
 
 
-GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
+GuiWorkArea * TabWorkArea::currentWorkArea() const
 {
-       // FIXME: this method doesn't work if we have more than work area
+       return workArea(currentIndex());
+}
+
+
+GuiWorkArea * TabWorkArea::workArea(Buffer & buffer) const
+{
+       // FIXME: this method doesn't work if we have more than one work area
        // showing the same buffer.
        for (int i = 0; i != count(); ++i) {
                GuiWorkArea * wa = workArea(i);
@@ -1730,18 +1762,27 @@ GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
 void TabWorkArea::closeAll()
 {
        while (count()) {
-               GuiWorkArea * wa = workArea(0);
-               LASSERT(wa, return);
+               QWidget * wac = widget(0);
+               LASSERT(wac, return);
                removeTab(0);
-               delete wa;
+               delete wac;
        }
 }
 
 
+int TabWorkArea::indexOfWorkArea(GuiWorkArea * w) const
+{
+       for (int index = 0; index < count(); ++index)
+               if (workArea(index) == w)
+                       return index;
+       return -1;
+}
+
+
 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
 {
        LASSERT(work_area, return false);
-       int index = indexOf(work_area);
+       int index = indexOfWorkArea(work_area);
        if (index == -1)
                return false;
 
@@ -1760,12 +1801,13 @@ bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
 {
        GuiWorkArea * wa = new GuiWorkArea(buffer, view);
+       GuiWorkAreaContainer * wac = new GuiWorkAreaContainer(wa);
        wa->setUpdatesEnabled(false);
        // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
        // when hiding it again below).
        if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
                showBar(count() > 0);
-       addTab(wa, wa->windowTitle());
+       addTab(wac, wa->windowTitle());
        QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
                this, SLOT(updateTabTexts()));
        if (currentWorkArea() && currentWorkArea()->isFullScreen())
@@ -1783,13 +1825,14 @@ GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
 {
        LASSERT(work_area, return false);
-       int index = indexOf(work_area);
+       int index = indexOfWorkArea(work_area);
        if (index == -1)
                return false;
 
        work_area->setUpdatesEnabled(false);
+       QWidget * wac = widget(index);
        removeTab(index);
-       delete work_area;
+       delete wac;
 
        if (count()) {
                // make sure the next work area is enabled.
@@ -1870,8 +1913,7 @@ void TabWorkArea::closeTab(int index)
 class DisplayPath {
 public:
        /// make vector happy
-       // coverity[UNINIT_CTOR]
-       DisplayPath() {}
+       DisplayPath() : tab_(-1), dottedPrefix_(false) {}
        ///
        DisplayPath(int tab, FileName const & filename)
                : tab_(tab)
@@ -2022,17 +2064,18 @@ void TabWorkArea::updateTabTexts()
                                continue;
                        }
 
-                       // we found a non-atomic segment segStart <= sit <= it < next.
+                       // We found a non-atomic segment
+                       // We know that segStart <= it < next <= paths.end().
+                       // The assertion below tells coverity about it.
+                       LATTEST(segStart != paths.end());
+                       QString dspString = segStart->forecastPathString();
+                       LYXERR(Debug::GUI, "first forecast found for "
+                              << segStart->abs() << " => " << dspString);
+                       It sit = segStart;
+                       ++sit;
                        // Shift path segments and hope for the best
                        // that it makes the path more unique.
                        somethingChanged = true;
-                       It sit = segStart;
-                       // this is ok for the reason mentioned  in the previous comment.
-                       // coverity[INVALIDATE_ITERATOR]
-                       QString dspString = sit->forecastPathString();
-                       LYXERR(Debug::GUI, "first forecast found for "
-                              << sit->abs() << " => " << dspString);
-                       ++sit;
                        bool moreUnique = false;
                        for (; sit != next; ++sit) {
                                if (sit->forecastPathString() != dspString) {
@@ -2068,11 +2111,16 @@ void TabWorkArea::updateTabTexts()
                if (!buf.fileName().empty() && !buf.isClean())
                        tab_text += "*";
                QString tab_tooltip = it->abs();
-               if (buf.isReadonly()) {
+               if (buf.hasReadonlyFlag()) {
                        setTabIcon(tab_index, QIcon(getPixmap("images/", "emblem-readonly", "svgz,png")));
-                       tab_tooltip = qt_("%1 (read only)").arg(it->abs());
+                       tab_tooltip = qt_("%1 (read only)").arg(tab_tooltip);
                } else
                        setTabIcon(tab_index, QIcon());
+               if (buf.notifiesExternalModification()) {
+                       QString const warn = qt_("%1 (modified externally)");
+                       tab_tooltip = warn.arg(tab_tooltip);
+                       tab_text += QChar(0x26a0);
+               }
                setTabText(tab_index, tab_text);
                setTabToolTip(tab_index, tab_tooltip);
        }
@@ -2189,6 +2237,58 @@ void DragTabBar::dropEvent(QDropEvent * event)
 }
 
 
+GuiWorkAreaContainer::GuiWorkAreaContainer(GuiWorkArea * wa, QWidget * parent)
+       : QWidget(parent), wa_(wa)
+{
+       LASSERT(wa, return);
+       Ui::WorkAreaUi::setupUi(this);
+       layout()->addWidget(wa);
+       connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
+               this, SLOT(updateDisplay()));
+       connect(reloadPB, SIGNAL(clicked()), this, SLOT(reload()));
+       connect(ignorePB, SIGNAL(clicked()), this, SLOT(ignore()));
+       setMessageColour({notificationFrame}, {reloadPB, ignorePB});
+       updateDisplay();
+}
+
+
+void GuiWorkAreaContainer::updateDisplay()
+{
+       Buffer const & buf = wa_->bufferView().buffer();
+       notificationFrame->setHidden(!buf.notifiesExternalModification());
+       QString const label = qt_("<b>The file %1 changed on disk.</b>")
+               .arg(toqstr(buf.fileName().displayName()));
+       externalModificationLabel->setText(label);
+}
+
+
+void GuiWorkAreaContainer::dispatch(FuncRequest f) const
+{
+       lyx::dispatch(FuncRequest(LFUN_BUFFER_SWITCH,
+                                 wa_->bufferView().buffer().absFileName()));
+       lyx::dispatch(f);
+}
+
+
+void GuiWorkAreaContainer::reload() const
+{
+       dispatch(FuncRequest(LFUN_BUFFER_RELOAD));
+}
+
+
+void GuiWorkAreaContainer::ignore() const
+{
+       dispatch(FuncRequest(LFUN_BUFFER_EXTERNAL_MODIFICATION_CLEAR));
+}
+
+
+void GuiWorkAreaContainer::mouseDoubleClickEvent(QMouseEvent * event)
+{
+       // prevent TabWorkArea from opening a new buffer on double click
+       event->accept();
+}
+
+
 } // namespace frontend
 } // namespace lyx