2 * \file GuiWorkArea.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
7 * \author Abdelrazak Younes
9 * Full author contact details are available in file CREDITS.
14 #include "GuiWorkArea.h"
15 #include "GuiWorkArea_Private.h"
17 #include "ColorCache.h"
18 #include "FontLoader.h"
19 #include "GuiApplication.h"
20 #include "GuiCompleter.h"
21 #include "GuiKeySymbol.h"
22 #include "GuiPainter.h"
25 #include "qt_helpers.h"
28 #include "BufferList.h"
29 #include "BufferParams.h"
30 #include "BufferView.h"
31 #include "CoordCache.h"
34 #include "FuncRequest.h"
35 #include "KeySymbol.h"
41 #include "TextMetrics.h"
45 #include "graphics/GraphicsImage.h"
46 #include "graphics/GraphicsLoader.h"
48 #include "support/convert.h"
49 #include "support/debug.h"
50 #include "support/lassert.h"
51 #include "support/TempFile.h"
53 #include "frontends/Application.h"
54 #include "frontends/FontMetrics.h"
55 #include "frontends/WorkAreaManager.h"
57 #include <QContextMenuEvent>
58 #if (QT_VERSION < 0x050000)
59 #include <QInputContext>
64 #include <QProxyStyle>
66 #include <QMainWindow>
72 #include <QStyleOption>
73 #include <QStylePainter>
75 #include <QToolButton>
82 int const TabIndicatorWidth = 3;
88 using namespace lyx::support;
93 /// return the LyX mouse button state from Qt's
94 static mouse_button::state q_button_state(Qt::MouseButton button)
96 mouse_button::state b = mouse_button::none;
99 b = mouse_button::button1;
102 b = mouse_button::button2;
104 case Qt::RightButton:
105 b = mouse_button::button3;
114 /// return the LyX mouse button state from Qt's
115 mouse_button::state q_motion_state(Qt::MouseButtons state)
117 mouse_button::state b = mouse_button::none;
118 if (state & Qt::LeftButton)
119 b |= mouse_button::button1;
120 if (state & Qt::MidButton)
121 b |= mouse_button::button2;
122 if (state & Qt::RightButton)
123 b |= mouse_button::button3;
132 CaretWidget() : rtl_(false), l_shape_(false), completable_(false),
133 x_(0), caret_width_(0)
136 /* Draw the caret. Parameter \c horiz_offset is not 0 when there
137 * has been horizontal scrolling in current row
139 void draw(QPainter & painter, int horiz_offset)
141 if (!rect_.isValid())
144 int const x = x_ - horiz_offset;
145 int const y = rect_.top();
146 int const l = x_ - rect_.left();
147 int const r = rect_.right() - x_;
148 int const bot = rect_.bottom();
150 // draw vertical line
151 painter.fillRect(x, y, caret_width_, rect_.height(), color_);
153 // draw RTL/LTR indication
154 painter.setPen(color_);
157 painter.drawLine(x, bot, x - l + 1, bot);
159 painter.drawLine(x, bot, x + caret_width_ + r - 1, bot);
162 // draw completion triangle
164 int m = y + rect_.height() / 2;
165 int d = TabIndicatorWidth - 1;
167 painter.drawLine(x - 1, m - d, x - 1 - d, m);
168 painter.drawLine(x - 1, m + d, x - 1 - d, m);
170 painter.drawLine(x + caret_width_, m - d, x + caret_width_ + d, m);
171 painter.drawLine(x + caret_width_, m + d, x + caret_width_ + d, m);
176 void update(int x, int y, int h, bool l_shape,
177 bool rtl, bool completable)
179 color_ = guiApp->colorCache().get(Color_cursor);
182 completable_ = completable;
185 // extension to left and right
189 // RTL/LTR indication
197 // completion triangle
200 l = max(l, TabIndicatorWidth);
202 r = max(r, TabIndicatorWidth);
205 //FIXME: LyXRC::cursor_width should be caret_width
206 caret_width_ = lyxrc.cursor_width
208 : 1 + int((lyxrc.currentZoom + 50) / 200.0);
210 // compute overall rectangle
211 rect_ = QRect(x - l, y, caret_width_ + r + l, h);
214 QRect const & rect() { return rect_; }
217 /// caret is in RTL or LTR text
219 /// indication for RTL or LTR
221 /// triangle to show that a completion is available
225 /// rectangle, possibly with l_shape and completion triangle
227 /// x position (were the vertical line is drawn)
229 /// the width of the vertical blinking bar
234 // This is a 'heartbeat' generating synthetic mouse move events when the
235 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
236 SyntheticMouseEvent::SyntheticMouseEvent()
237 : timeout(200), restart_timeout(true)
241 GuiWorkArea::Private::Private(GuiWorkArea * parent)
242 : p(parent), buffer_view_(nullptr), lyx_view_(nullptr), caret_(nullptr),
243 caret_visible_(false), need_resize_(false), preedit_lines_(1),
244 last_pixel_ratio_(1.0), completer_(new GuiCompleter(p, p)),
245 dialog_mode_(false), shell_escape_(false), read_only_(false),
246 clean_(true), externally_modified_(false), needs_caret_geometry_update_(true)
248 /* Qt on macOS and Wayland does not respect the
249 * Qt::WA_OpaquePaintEvent attribute and resets the widget backing
250 * store at each update. Therefore, we use our own backing store in
251 * these two cases. */
252 #if QT_VERSION >= 0x050000
253 use_backingstore_ = guiApp->platformName() == "cocoa"
254 || guiApp->platformName().contains("wayland");
257 use_backingstore_ = true;
259 use_backingstore_ = false;
263 int const time = QApplication::cursorFlashTime() / 2;
265 caret_timeout_.setInterval(time);
266 caret_timeout_.start();
268 // let's initialize this just to be safe
269 caret_timeout_.setInterval(500);
274 GuiWorkArea::Private::~Private()
276 // If something is wrong with the buffer, we can ignore it safely
278 buffer_view_->buffer().workAreaManager().remove(p);
282 // Completer has a QObject parent and is thus automatically destroyed.
284 // delete completer_;
288 GuiWorkArea::GuiWorkArea(QWidget * /* w */)
289 : d(new Private(this))
291 new CompressorProxy(this); // not a leak
295 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
296 : d(new Private(this))
298 new CompressorProxy(this); // not a leak
300 buffer.params().display_pixel_ratio = theGuiApp()->pixelRatio();
306 double GuiWorkArea::pixelRatio() const
308 #if QT_VERSION >= 0x050000
309 return qt_scale_factor * devicePixelRatio();
316 void GuiWorkArea::init()
319 connect(&d->caret_timeout_, SIGNAL(timeout()),
320 this, SLOT(toggleCaret()));
322 // This connection is closed at the same time as this is destroyed.
323 d->synthetic_mouse_event_.timeout.timeout.connect([this](){
324 generateSyntheticMouseEvent();
328 // With Qt4.5 a mouse event will happen before the first paint event
329 // so make sure that the buffer view has an up to date metrics.
330 d->buffer_view_->resize(viewport()->width(), viewport()->height());
331 d->caret_ = new frontend::CaretWidget();
333 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
334 setAcceptDrops(true);
335 setMouseTracking(true);
336 setMinimumSize(100, 70);
337 setFrameStyle(QFrame::NoFrame);
340 d->updateCursorShape();
342 // we paint our own background
343 viewport()->setAttribute(Qt::WA_OpaquePaintEvent);
345 setFocusPolicy(Qt::StrongFocus);
347 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
348 << " viewport height: " << viewport()->height());
350 // Enables input methods for asian languages.
351 // Must be set when creating custom text editing widgets.
352 setAttribute(Qt::WA_InputMethodEnabled, true);
356 GuiWorkArea::~GuiWorkArea()
362 void GuiWorkArea::Private::updateCursorShape()
364 bool const clickable = buffer_view_ && buffer_view_->clickableInset();
365 p->viewport()->setCursor(clickable ? Qt::PointingHandCursor
370 void GuiWorkArea::setGuiView(GuiView & gv)
376 void GuiWorkArea::setBuffer(Buffer & buffer)
378 delete d->buffer_view_;
379 d->buffer_view_ = new BufferView(buffer);
380 buffer.workAreaManager().add(this);
382 // HACK: Prevents an additional redraw when the scrollbar pops up
383 // which regularly happens on documents with more than one page.
384 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
385 // Since we have no geometry information yet, we assume that
386 // a document needs a scrollbar if there is more then four
387 // paragraph in the outermost text.
388 if (buffer.text().paragraphs().size() > 4)
389 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
390 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
391 Q_EMIT bufferViewChanged();
395 void GuiWorkArea::fixVerticalScrollBar()
398 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
402 void GuiWorkArea::close()
404 d->lyx_view_->removeWorkArea(this);
408 void GuiWorkArea::setFullScreen(bool full_screen)
410 d->buffer_view_->setFullScreen(full_screen);
411 if (full_screen && lyxrc.full_screen_scrollbar)
412 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
414 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
418 BufferView & GuiWorkArea::bufferView()
420 return *d->buffer_view_;
424 BufferView const & GuiWorkArea::bufferView() const
426 return *d->buffer_view_;
430 void GuiWorkArea::stopBlinkingCaret()
432 d->caret_timeout_.stop();
437 void GuiWorkArea::startBlinkingCaret()
439 // do not show the cursor if the view is busy
443 // Don't start blinking if the cursor isn't on screen, unless we
444 // are not ready to know whether the cursor is on screen.
445 if (!d->buffer_view_->buffer().undo().activeUndoGroup()
446 && !d->buffer_view_->caretInView())
451 // Avoid blinking when debugging PAINTING, since it creates too much noise
452 if (!lyxerr.debugging(Debug::PAINTING)) {
453 // we are not supposed to cache this value.
454 int const time = QApplication::cursorFlashTime() / 2;
457 d->caret_timeout_.setInterval(time);
458 d->caret_timeout_.start();
463 void GuiWorkArea::toggleCaret()
465 if (d->caret_visible_)
472 void GuiWorkArea::scheduleRedraw(bool update_metrics)
475 // No need to redraw in this case.
478 // No need to do anything if this is the current view. The BufferView
479 // metrics are already up to date.
480 if (update_metrics || d->lyx_view_ != guiApp->currentView()
481 || d->lyx_view_->currentWorkArea() != this) {
482 // FIXME: it would be nice to optimize for the off-screen case.
483 d->buffer_view_->cursor().fixIfBroken();
484 d->buffer_view_->updateMetrics();
485 d->buffer_view_->cursor().fixIfBroken();
488 // update caret position, because otherwise it has to wait until
489 // the blinking interval is over
490 d->needs_caret_geometry_update_ = true;
491 d->caret_visible_ = true;
493 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
494 viewport()->update();
496 /// FIXME: is this still true now that paintEvent does the actual painting?
497 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
498 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
499 d->updateScrollbar();
500 d->lyx_view_->updateStatusBar();
502 if (lyxerr.debugging(Debug::WORKAREA))
503 d->buffer_view_->coordCache().dump();
507 d->updateCursorShape();
511 // Keep in sync with GuiWorkArea::processKeySym below
512 bool GuiWorkArea::queryKeySym(KeySymbol const & key, KeyModifier mod) const
514 return guiApp->queryKeySym(key, mod);
518 // Keep in sync with GuiWorkArea::queryKeySym above
519 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
521 if (d->lyx_view_->isFullScreen() && d->lyx_view_->menuBar()->isVisible()
522 && lyxrc.full_screen_menubar) {
523 // FIXME HACK: we should not have to do this here. See related comment
524 // in GuiView::event() (QEvent::ShortcutOverride)
525 d->lyx_view_->menuBar()->hide();
528 // In order to avoid bad surprise in the middle of an operation,
529 // we better stop the blinking caret...
530 // the caret gets restarted in GuiView::restartCaret()
532 guiApp->processKeySym(key, mod);
536 void GuiWorkArea::Private::dispatch(FuncRequest const & cmd)
539 if (cmd.action() == LFUN_FILE_OPEN) {
541 lyx_view_->dispatch(cmd, dr);
545 bool const notJustMovingTheMouse =
546 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
548 // In order to avoid bad surprise in the middle of an operation, we better stop
549 // the blinking caret.
550 if (notJustMovingTheMouse)
551 p->stopBlinkingCaret();
553 buffer_view_->mouseEventDispatch(cmd);
555 // Skip these when selecting
556 // FIXME: let GuiView take care of those.
557 if (cmd.action() != LFUN_MOUSE_MOTION) {
558 completer_->updateVisibility(false, false);
559 lyx_view_->updateDialogs();
560 lyx_view_->updateStatusBar();
563 // GUI tweaks except with mouse motion with no button pressed.
564 if (notJustMovingTheMouse) {
565 // Slight hack: this is only called currently when we
566 // clicked somewhere, so we force through the display
567 // of the new status here.
568 // FIXME: let GuiView take care of those.
569 lyx_view_->clearMessage();
571 // Show the caret immediately after any operation
572 p->startBlinkingCaret();
579 void GuiWorkArea::Private::resizeBufferView()
581 // WARNING: Please don't put any code that will trigger a repaint here!
582 // We are already inside a paint event.
583 p->stopBlinkingCaret();
584 // Warn our container (GuiView).
587 bool const caret_in_view = buffer_view_->caretInView();
588 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
590 buffer_view_->scrollToCursor();
591 needs_caret_geometry_update_ = true;
592 caret_visible_ = true;
594 // Update scrollbars which might have changed due different
595 // BufferView dimension. This is especially important when the
596 // BufferView goes from zero-size to the real-size for the first time,
597 // as the scrollbar parameters are then set for the first time.
600 need_resize_ = false;
602 // Eventually, restart the caret after the resize event.
603 // We might be resizing even if the focus is on another widget so we only
604 // restart the caret if we have the focus.
606 QTimer::singleShot(50, p, SLOT(startBlinkingCaret()));
610 void GuiWorkArea::Private::updateCaretGeometry()
612 // we cannot update geometry if not ready and we do not need to if
613 // caret is not in view.
614 if (buffer_view_->buffer().undo().activeUndoGroup()
615 || !buffer_view_->caretInView())
620 buffer_view_->caretPosAndHeight(point, h);
623 bool l_shape = false;
624 Font const & realfont = buffer_view_->cursor().real_current_font;
625 BufferParams const & bp = buffer_view_->buffer().params();
626 bool const samelang = realfont.language() == bp.language;
627 bool const isrtl = realfont.isVisibleRightToLeft();
629 if (!samelang || isrtl != bp.language->rightToLeft())
632 // The ERT language hack needs fixing up
633 if (realfont.language() == latex_language)
636 // show caret on screen
637 Cursor & cur = buffer_view_->cursor();
638 bool completable = cur.inset().showCompletionCursor()
639 && completer_->completionAvailable()
640 && !completer_->popupVisible()
641 && !completer_->inlineVisible();
643 caret_->update(point.x_, point.y_, h, l_shape, isrtl, completable);
644 needs_caret_geometry_update_ = false;
649 void GuiWorkArea::Private::showCaret()
654 needs_caret_geometry_update_ = true;
655 caret_visible_ = true;
656 p->viewport()->update();
660 void GuiWorkArea::Private::hideCaret()
665 caret_visible_ = false;
666 //if (!qApp->focusWidget())
667 p->viewport()->update();
671 void GuiWorkArea::Private::updateScrollbar()
673 // Prevent setRange() and setSliderPosition from causing recursive calls via
674 // the signal valueChanged. (#10311)
675 QObject::disconnect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
676 p, SLOT(scrollTo(int)));
677 ScrollbarParameters const & scroll = buffer_view_->scrollbarParameters();
678 p->verticalScrollBar()->setRange(scroll.min, scroll.max);
679 p->verticalScrollBar()->setPageStep(scroll.page_step);
680 p->verticalScrollBar()->setSingleStep(scroll.single_step);
681 p->verticalScrollBar()->setSliderPosition(0);
682 // Connect to the vertical scroll bar
683 QObject::connect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
684 p, SLOT(scrollTo(int)));
688 void GuiWorkArea::scrollTo(int value)
691 d->buffer_view_->scrollDocView(value, true);
693 if (lyxrc.cursor_follows_scrollbar) {
694 d->buffer_view_->setCursorFromScrollbar();
695 // FIXME: let GuiView take care of those.
696 d->lyx_view_->updateLayoutList();
698 // Show the caret immediately after any operation.
699 startBlinkingCaret();
702 QApplication::syncX();
707 bool GuiWorkArea::event(QEvent * e)
710 case QEvent::ToolTip: {
711 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
712 if (lyxrc.use_tooltip) {
713 QPoint pos = helpEvent->pos();
714 if (pos.x() < viewport()->width()) {
715 QString s = toqstr(d->buffer_view_->toolTip(pos.x(), pos.y()));
716 QToolTip::showText(helpEvent->globalPos(), formatToolTip(s,35));
719 QToolTip::hideText();
721 // Don't forget to accept the event!
726 case QEvent::ShortcutOverride:
727 // keyPressEvent is ShortcutOverride-aware and only accepts the event in
729 keyPressEvent(static_cast<QKeyEvent *>(e));
730 return e->isAccepted();
732 case QEvent::KeyPress: {
733 // We catch this event in order to catch the Tab or Shift+Tab key press
734 // which are otherwise reserved to focus switching between controls
736 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
737 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
738 || (ke->key() == Qt::Key_Backtab && (
739 ke->modifiers() == Qt::ShiftModifier
740 || ke->modifiers() == Qt::NoModifier))) {
744 return QAbstractScrollArea::event(e);
748 return QAbstractScrollArea::event(e);
754 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
757 if (e->reason() == QContextMenuEvent::Mouse)
758 // the menu name is set on mouse press
759 name = d->context_menu_name_;
761 QPoint pos = e->pos();
762 Cursor const & cur = d->buffer_view_->cursor();
763 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
764 // Do not access the context menu of math right in front of before
765 // the cursor. This does not work when the cursor is in text.
766 Inset * inset = cur.paragraph().getInset(cur.pos());
767 if (inset && inset->asInsetMath())
769 else if (cur.pos() > 0) {
770 inset = cur.paragraph().getInset(cur.pos() - 1);
775 name = d->buffer_view_->contextMenu(pos.x(), pos.y());
782 // always show mnemonics when the keyboard is used to show the context menu
783 // FIXME: This should be fixed in Qt itself
784 bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
785 QMenu * menu = guiApp->menus().menu(toqstr(name), *d->lyx_view_, keyboard);
790 // Position the menu to the right.
791 // FIXME: menu position should be different for RTL text.
792 menu->exec(e->globalPos());
797 void GuiWorkArea::focusInEvent(QFocusEvent * e)
799 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
800 if (d->lyx_view_->currentWorkArea() != this) {
801 d->lyx_view_->setCurrentWorkArea(this);
802 d->lyx_view_->currentWorkArea()->bufferView().buffer().updateBuffer();
805 startBlinkingCaret();
806 QAbstractScrollArea::focusInEvent(e);
810 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
812 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
814 QAbstractScrollArea::focusOutEvent(e);
818 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
820 if (d->dc_event_.active && d->dc_event_ == *e) {
821 d->dc_event_.active = false;
822 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
823 q_button_state(e->button()), q_key_state(e->modifiers()));
829 #if (QT_VERSION < 0x050000) && !defined(__HAIKU__)
830 inputContext()->reset();
833 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
834 q_button_state(e->button()), q_key_state(e->modifiers()));
837 // Save the context menu on mouse press, because also the mouse
838 // cursor is set on mouse press. Afterwards, we can either release
839 // the mousebutton somewhere else, or the cursor might have moved
840 // due to the DEPM. We need to do this after the mouse has been
841 // set in dispatch(), because the selection state might change.
842 if (e->button() == Qt::RightButton)
843 d->context_menu_name_ = d->buffer_view_->contextMenu(e->x(), e->y());
849 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
851 if (d->synthetic_mouse_event_.timeout.running())
852 d->synthetic_mouse_event_.timeout.stop();
854 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
855 q_button_state(e->button()), q_key_state(e->modifiers()));
856 #if (QT_VERSION > QT_VERSION_CHECK(5,10,1))
857 d->synthetic_mouse_event_.cmd = cmd; // QtBug QAbstractScrollArea::mouseMoveEvent
864 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
866 #if (QT_VERSION > QT_VERSION_CHECK(5,10,1))
867 // cancel the event if the coordinates didn't change, this is due to QtBug
868 // QAbstractScrollArea::mouseMoveEvent, the event is triggered falsely when quickly
869 // double tapping a touchpad. To test: try to select a word by quickly double tapping
870 // on a touchpad while hovering the cursor over that word in the work area.
871 // This bug does not occur on Qt versions 5.10.1 and below. Only Windows seems to be affected.
872 // ML thread: https://www.mail-archive.com/lyx-devel@lists.lyx.org/msg211699.html
873 // Qt bugtracker: https://bugreports.qt.io/browse/QTBUG-85431
874 if (e->x() == d->synthetic_mouse_event_.cmd.x() && // QtBug QAbstractScrollArea::mouseMoveEvent
875 e->y() == d->synthetic_mouse_event_.cmd.y()) // QtBug QAbstractScrollArea::mouseMoveEvent
876 return; // QtBug QAbstractScrollArea::mouseMoveEvent
879 // we kill the triple click if we move
880 doubleClickTimeout();
881 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
882 q_motion_state(e->buttons()), q_key_state(e->modifiers()));
886 // If we're above or below the work area...
887 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
888 && e->buttons() == mouse_button::button1) {
889 // Make sure only a synthetic event can cause a page scroll,
890 // so they come at a steady rate:
892 // _Force_ a scroll up:
893 cmd.set_y(e->y() - 21);
895 cmd.set_y(e->y() + 21);
896 // Store the event, to be handled when the timeout expires.
897 d->synthetic_mouse_event_.cmd = cmd;
899 if (d->synthetic_mouse_event_.timeout.running()) {
900 // Discard the event. Note that it _may_ be handled
901 // when the timeout expires if
902 // synthetic_mouse_event_.cmd has not been overwritten.
903 // Ie, when the timeout expires, we handle the
904 // most recent event but discard all others that
905 // occurred after the one used to start the timeout
906 // in the first place.
910 d->synthetic_mouse_event_.restart_timeout = true;
911 d->synthetic_mouse_event_.timeout.start();
912 // Fall through to handle this event...
914 } else if (d->synthetic_mouse_event_.timeout.running()) {
915 // Store the event, to be possibly handled when the timeout
917 // Once the timeout has expired, normal control is returned
918 // to mouseMoveEvent (restart_timeout = false).
919 // This results in a much smoother 'feel' when moving the
920 // mouse back into the work area.
921 d->synthetic_mouse_event_.cmd = cmd;
922 d->synthetic_mouse_event_.restart_timeout = false;
929 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
931 // Wheel rotation by one notch results in a delta() of 120 (see
932 // documentation of QWheelEvent)
933 // But first we have to ignore horizontal scroll events.
934 #if QT_VERSION < 0x050000
935 if (ev->orientation() == Qt::Horizontal) {
939 double const delta = ev->delta() / 120.0;
941 QPoint const aDelta = ev->angleDelta();
942 // skip horizontal wheel event
943 if (abs(aDelta.x()) > abs(aDelta.y())) {
947 double const delta = aDelta.y() / 120.0;
951 switch (lyxrc.scroll_wheel_zoom) {
952 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
953 zoom = ev->modifiers() & Qt::ControlModifier;
954 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
956 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
957 zoom = ev->modifiers() & Qt::ShiftModifier;
958 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
960 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
961 zoom = ev->modifiers() & Qt::AltModifier;
962 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
964 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
968 docstring arg = convert<docstring>(int(5 * delta));
969 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
973 // Take into account the desktop wide settings.
974 int const lines = qApp->wheelScrollLines();
975 int const page_step = verticalScrollBar()->pageStep();
976 // Test if the wheel mouse is set to one screen at a time.
977 // This is according to
978 // https://doc.qt.io/qt-5/qapplication.html#wheelScrollLines-prop
980 min(lines * verticalScrollBar()->singleStep(), page_step);
982 // Take into account the rotation and the user preferences.
983 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
984 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
985 << " delta = " << delta << " scroll_value = " << scroll_value
986 << " page_step = " << page_step);
988 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
994 void GuiWorkArea::generateSyntheticMouseEvent()
996 int const e_y = d->synthetic_mouse_event_.cmd.y();
997 int const wh = d->buffer_view_->workHeight();
998 bool const up = e_y < 0;
999 bool const down = e_y > wh;
1001 // Set things off to generate the _next_ 'pseudo' event.
1003 if (d->synthetic_mouse_event_.restart_timeout) {
1004 // This is some magic formulae to determine the speed
1005 // of scrolling related to the position of the mouse.
1008 int dist = up ? -e_y : e_y - wh;
1009 time = max(min(200, 250000 / (dist * dist)), 1) ;
1012 step = 80000 / (time * time);
1016 d->synthetic_mouse_event_.timeout.setTimeout(time);
1017 d->synthetic_mouse_event_.timeout.start();
1020 // Can we scroll further ?
1021 int const value = verticalScrollBar()->value();
1022 if (value == verticalScrollBar()->maximum()
1023 || value == verticalScrollBar()->minimum()) {
1024 d->synthetic_mouse_event_.timeout.stop();
1029 if (step <= 2 * wh) {
1030 d->buffer_view_->scroll(up ? -step : step);
1031 d->buffer_view_->updateMetrics();
1033 d->buffer_view_->scrollDocView(value + (up ? -step : step), false);
1036 // In which paragraph do we have to set the cursor ?
1037 Cursor & cur = d->buffer_view_->cursor();
1038 // FIXME: we don't know how to handle math.
1039 Text * text = cur.text();
1042 TextMetrics const & tm = d->buffer_view_->textMetrics(text);
1044 // Quit gracefully if there are no metrics, since otherwise next
1045 // line would crash (bug #10324).
1046 // This situation seems related to a (not yet understood) timing problem.
1050 pair<pit_type, const ParagraphMetrics *> pp = up ? tm.first() : tm.last();
1051 ParagraphMetrics const & pm = *pp.second;
1052 pit_type const pit = pp.first;
1054 if (pm.rows().empty())
1057 // Find the row at which we set the cursor.
1058 RowList::const_iterator rit = pm.rows().begin();
1059 RowList::const_iterator rlast = pm.rows().end();
1060 int yy = pm.position() - pm.ascent();
1061 for (--rlast; rit != rlast; ++rit) {
1062 int h = rit->height();
1063 if ((up && yy + h > 0)
1064 || (!up && yy + h > wh - defaultRowHeight()))
1069 // Find the position of the cursor
1071 int x = d->synthetic_mouse_event_.cmd.x();
1072 pos_type const pos = tm.getPosNearX(*rit, x, bound);
1077 cur.boundary(bound);
1079 d->buffer_view_->buffer().changed(false);
1084 // CompressorProxy adapted from Kuba Ober https://stackoverflow.com/a/21006207
1085 CompressorProxy::CompressorProxy(GuiWorkArea * wa) : QObject(wa), flag_(false)
1087 qRegisterMetaType<KeySymbol>("KeySymbol");
1088 qRegisterMetaType<KeyModifier>("KeyModifier");
1089 connect(wa, SIGNAL(compressKeySym(KeySymbol, KeyModifier, bool)),
1090 this, SLOT(slot(KeySymbol, KeyModifier, bool)),
1091 Qt::QueuedConnection);
1092 connect(this, SIGNAL(signal(KeySymbol, KeyModifier)),
1093 wa, SLOT(processKeySym(KeySymbol, KeyModifier)));
1097 bool CompressorProxy::emitCheck(bool isAutoRepeat)
1101 QCoreApplication::sendPostedEvents(this, QEvent::MetaCall); // recurse
1102 bool result = flag_;
1108 void CompressorProxy::slot(KeySymbol sym, KeyModifier mod, bool isAutoRepeat)
1110 if (emitCheck(isAutoRepeat))
1111 Q_EMIT signal(sym, mod);
1113 LYXERR(Debug::KEY, "system is busy: autoRepeat key event ignored");
1117 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
1119 // this is also called for ShortcutOverride events. In this case, one must
1120 // not act but simply accept the event explicitly.
1121 bool const act = (ev->type() != QEvent::ShortcutOverride);
1123 // Do not process here some keys if dialog_mode_ is set
1124 bool const for_dialog_mode = d->dialog_mode_
1125 && (ev->modifiers() == Qt::NoModifier
1126 || ev->modifiers() == Qt::ShiftModifier)
1127 && (ev->key() == Qt::Key_Escape
1128 || ev->key() == Qt::Key_Enter
1129 || ev->key() == Qt::Key_Return);
1130 // also do not use autoRepeat to input shortcuts
1131 bool const autoRepeat = ev->isAutoRepeat();
1133 if (for_dialog_mode || (!act && autoRepeat)) {
1138 // intercept some keys if completion popup is visible
1139 if (d->completer_->popupVisible()) {
1140 switch (ev->key()) {
1142 case Qt::Key_Return:
1144 d->completer_->activate();
1150 KeyModifier const m = q_key_state(ev->modifiers());
1152 if (act && lyxerr.debugging(Debug::KEY)) {
1154 if (m & ShiftModifier)
1156 if (m & ControlModifier)
1158 if (m & AltModifier)
1160 if (m & MetaModifier)
1162 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1163 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
1164 << " keyState: " << str);
1168 setKeySymbol(&sym, ev);
1171 Q_EMIT compressKeySym(sym, m, autoRepeat);
1174 // here, !autoRepeat, as determined at the beginning
1175 ev->setAccepted(queryKeySym(sym, m));
1182 void GuiWorkArea::doubleClickTimeout()
1184 d->dc_event_.active = false;
1188 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1190 d->dc_event_ = DoubleClick(ev);
1191 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1192 SLOT(doubleClickTimeout()));
1193 FuncRequest cmd(LFUN_MOUSE_DOUBLE, ev->x(), ev->y(),
1194 q_button_state(ev->button()), q_key_state(ev->modifiers()));
1200 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1202 QAbstractScrollArea::resizeEvent(ev);
1203 d->need_resize_ = true;
1208 void GuiWorkArea::Private::paintPreeditText(GuiPainter & pain)
1210 if (preedit_string_.empty())
1213 // FIXME: shall we use real_current_font here? (see #10478)
1214 FontInfo const font = buffer_view_->cursor().getFont().fontInfo();
1215 FontMetrics const & fm = theFontMetrics(font);
1216 int const height = fm.maxHeight();
1217 int cur_x = caret_->rect().left();
1218 int cur_y = caret_->rect().bottom();
1220 // get attributes of input method cursor.
1221 // cursor_pos : cursor position in preedit string.
1222 size_t cursor_pos = 0;
1223 bool cursor_is_visible = false;
1224 for (auto const & attr : preedit_attr_) {
1225 if (attr.type == QInputMethodEvent::Cursor) {
1226 cursor_pos = size_t(attr.start);
1227 cursor_is_visible = attr.length != 0;
1232 size_t const preedit_length = preedit_string_.length();
1234 // get position of selection in input method.
1235 // FIXME: isn't there a simpler way to do this?
1236 // rStart : cursor position in selected string in IM.
1238 // rLength : selected string length in IM.
1240 if (cursor_pos < preedit_length) {
1241 for (auto const & attr : preedit_attr_) {
1242 if (attr.type == QInputMethodEvent::TextFormat) {
1243 if (attr.start <= int(cursor_pos)
1244 && int(cursor_pos) < attr.start + attr.length) {
1245 rStart = size_t(attr.start);
1246 rLength = size_t(attr.length);
1247 if (!cursor_is_visible)
1248 cursor_pos += rLength;
1255 rStart = cursor_pos;
1259 int const right_margin = buffer_view_->rightMargin();
1260 Painter::preedit_style ps;
1261 // Most often there would be only one line:
1263 for (size_t pos = 0; pos != preedit_length; ++pos) {
1264 char_type const typed_char = preedit_string_[pos];
1265 // reset preedit string style
1266 ps = Painter::preedit_default;
1268 // if we reached the right extremity of the screen, go to next line.
1269 if (cur_x + fm.width(typed_char) > p->viewport()->width() - right_margin) {
1270 cur_x = right_margin;
1271 cur_y += height + 1;
1274 // preedit strings are displayed with dashed underline
1275 // and partial strings are displayed white on black indicating
1276 // that we are in selecting mode in the input method.
1277 // FIXME: rLength == preedit_length is not a changing condition
1278 // FIXME: should be put out of the loop.
1280 && pos < rStart + rLength
1281 && !(cursor_pos < rLength && rLength == preedit_length))
1282 ps = Painter::preedit_selecting;
1284 if (pos == cursor_pos
1285 && (cursor_pos < rLength && rLength == preedit_length))
1286 ps = Painter::preedit_cursor;
1288 // draw one character and update cur_x.
1289 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1294 void GuiWorkArea::Private::resetScreen()
1296 if (use_backingstore_) {
1297 int const pr = p->pixelRatio();
1298 screen_ = QImage(static_cast<int>(pr * p->viewport()->width()),
1299 static_cast<int>(pr * p->viewport()->height()),
1300 QImage::Format_ARGB32_Premultiplied);
1301 # if QT_VERSION >= 0x050000
1302 screen_.setDevicePixelRatio(pr);
1308 QPaintDevice * GuiWorkArea::Private::screenDevice()
1310 if (use_backingstore_)
1313 return p->viewport();
1317 void GuiWorkArea::Private::updateScreen(QRectF const & rc)
1319 if (use_backingstore_) {
1320 QPainter qpain(p->viewport());
1321 double const pr = p->pixelRatio();
1322 QRectF const rcs = QRectF(rc.x() * pr, rc.y() * pr,
1323 rc.width() * pr, rc.height() * pr);
1324 qpain.drawImage(rc, screen_, rcs);
1329 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1331 // Do not trigger the painting machinery if we are not ready (see
1332 // bug #10989). The second test triggers when in the middle of a
1333 // dispatch operation.
1334 if (view().busy() || d->buffer_view_->buffer().undo().activeUndoGroup()) {
1335 // Since macOS has turned the screen black at this point, our
1336 // backing store has to be copied to screen (this is a no-op
1337 // except on macOS).
1338 d->updateScreen(ev->rect());
1339 // Ignore this paint event, but request a new one for later.
1340 viewport()->update(ev->rect());
1345 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1346 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1348 if (d->need_resize_ || pixelRatio() != d->last_pixel_ratio_) {
1350 d->resizeBufferView();
1353 d->last_pixel_ratio_ = pixelRatio();
1355 GuiPainter pain(d->screenDevice(), pixelRatio(), d->lyx_view_->develMode());
1357 d->buffer_view_->draw(pain, d->caret_visible_);
1359 // The preedit text, if needed
1360 d->paintPreeditText(pain);
1363 // FIXME: the code would be a little bit simpler if caret geometry
1364 // was updated unconditionally. Some profiling is required to see
1365 // how expensive this is (especially when idle).
1366 if (d->caret_visible_) {
1367 if (d->needs_caret_geometry_update_)
1368 d->updateCaretGeometry();
1369 d->caret_->draw(pain, d->buffer_view_->horizScrollOffset());
1372 d->updateScreen(ev->rect());
1378 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1380 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1381 << " commitString: " << e->commitString());
1383 // insert the processed text in the document (handles undo)
1384 if (!e->commitString().isEmpty()) {
1385 FuncRequest cmd(LFUN_SELF_INSERT,
1386 qstring_to_ucs4(e->commitString()),
1387 FuncRequest::KEYBOARD);
1389 // FIXME: this is supposed to remove traces from preedit
1390 // string. Can we avoid calling it explicitly?
1391 d->buffer_view_->updateMetrics();
1394 // Hide the caret during the test transformation.
1395 if (e->preeditString().isEmpty())
1396 startBlinkingCaret();
1398 stopBlinkingCaret();
1400 if (d->preedit_string_.empty() && e->preeditString().isEmpty()) {
1406 // The preedit text and its attributes will be used in paintPreeditText
1407 d->preedit_string_ = qstring_to_ucs4(e->preeditString());
1408 d->preedit_attr_ = e->attributes();
1411 // redraw area of preedit string.
1412 int height = d->caret_->rect().height();
1413 int cur_y = d->caret_->rect().bottom();
1414 viewport()->update(0, cur_y - height, viewport()->width(),
1415 (height + 1) * d->preedit_lines_);
1417 if (d->preedit_string_.empty()) {
1418 d->preedit_lines_ = 1;
1423 // Don't forget to accept the event!
1428 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1430 QRect cur_r(0, 0, 0, 0);
1432 // this is the CJK-specific composition window position and
1433 // the context menu position when the menu key is pressed.
1434 case Qt::ImMicroFocus:
1435 cur_r = d->caret_->rect();
1436 if (d->preedit_lines_ != 1)
1438 cur_r.moveBottom(cur_r.bottom()
1439 + cur_r.height() * (d->preedit_lines_ - 1));
1440 // return lower right of caret in LyX.
1443 return QWidget::inputMethodQuery(query);
1448 void GuiWorkArea::updateWindowTitle()
1450 Buffer const & buf = bufferView().buffer();
1451 if (buf.fileName() != d->file_name_
1452 || buf.params().shell_escape != d->shell_escape_
1453 || buf.hasReadonlyFlag() != d->read_only_
1454 || buf.lyxvc().vcstatus() != d->vc_status_
1455 || buf.isClean() != d->clean_
1456 || buf.notifiesExternalModification() != d->externally_modified_) {
1457 d->file_name_ = buf.fileName();
1458 d->shell_escape_ = buf.params().shell_escape;
1459 d->read_only_ = buf.hasReadonlyFlag();
1460 d->vc_status_ = buf.lyxvc().vcstatus();
1461 d->clean_ = buf.isClean();
1462 d->externally_modified_ = buf.notifiesExternalModification();
1463 Q_EMIT titleChanged(this);
1468 bool GuiWorkArea::isFullScreen() const
1470 return d->lyx_view_ && d->lyx_view_->isFullScreen();
1474 bool GuiWorkArea::inDialogMode() const
1476 return d->dialog_mode_;
1480 void GuiWorkArea::setDialogMode(bool mode)
1482 d->dialog_mode_ = mode;
1486 GuiCompleter & GuiWorkArea::completer()
1488 return *d->completer_;
1491 GuiView const & GuiWorkArea::view() const
1493 return *d->lyx_view_;
1497 GuiView & GuiWorkArea::view()
1499 return *d->lyx_view_;
1502 ////////////////////////////////////////////////////////////////////
1506 ////////////////////////////////////////////////////////////////////
1509 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1511 support::TempFile tempfile("embedded.internal");
1512 tempfile.setAutoRemove(false);
1513 buffer_ = theBufferList().newInternalBuffer(tempfile.name().absFileName());
1514 buffer_->setUnnamed(true);
1515 buffer_->setFullyLoaded(true);
1516 setBuffer(*buffer_);
1517 setDialogMode(true);
1521 EmbeddedWorkArea::~EmbeddedWorkArea()
1523 // No need to destroy buffer and bufferview here, because it is done
1524 // in theBufferList() destruction loop at application exit
1528 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1531 GuiWorkArea::closeEvent(ev);
1535 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1538 GuiWorkArea::hideEvent(ev);
1542 QSize EmbeddedWorkArea::sizeHint () const
1545 // GuiWorkArea sets the size to the screen's viewport
1546 // by returning a value this gets overridden
1547 // EmbeddedWorkArea is now sized to fit in the layout
1548 // of the parent, and has a minimum size set in GuiWorkArea
1549 // which is what we return here
1550 return QSize(100, 70);
1554 void EmbeddedWorkArea::disable()
1556 stopBlinkingCaret();
1557 if (view().currentWorkArea() != this)
1559 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1560 // tolerates it and shows the background logo), what happens if
1561 // an EmbeddedWorkArea is closed after closing all document WAs
1562 view().setCurrentWorkArea(view().currentMainWorkArea());
1565 ////////////////////////////////////////////////////////////////////
1569 ////////////////////////////////////////////////////////////////////
1572 class NoTabFrameMacStyle : public QProxyStyle {
1575 QRect subElementRect(SubElement element, const QStyleOption * option,
1576 const QWidget * widget = 0) const
1578 QRect rect = QProxyStyle::subElementRect(element, option, widget);
1579 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1581 // The Qt Mac style puts the contents into a 3 pixel wide box
1582 // which looks very ugly and not like other Mac applications.
1583 // Hence we remove this here, and moreover the 16 pixel round
1584 // frame above if the tab bar is hidden.
1585 if (element == QStyle::SE_TabWidgetTabContents) {
1586 rect.adjust(- rect.left(), 0, rect.left(), 0);
1595 NoTabFrameMacStyle noTabFrameMacStyle;
1599 TabWorkArea::TabWorkArea(QWidget * parent)
1600 : QTabWidget(parent), clicked_tab_(-1), midpressed_tab_(-1)
1603 setStyle(&noTabFrameMacStyle);
1606 QPalette pal = palette();
1607 pal.setColor(QPalette::Active, QPalette::Button,
1608 pal.color(QPalette::Active, QPalette::Window));
1609 pal.setColor(QPalette::Disabled, QPalette::Button,
1610 pal.color(QPalette::Disabled, QPalette::Window));
1611 pal.setColor(QPalette::Inactive, QPalette::Button,
1612 pal.color(QPalette::Inactive, QPalette::Window));
1614 QObject::connect(this, SIGNAL(currentChanged(int)),
1615 this, SLOT(on_currentTabChanged(int)));
1617 closeBufferButton = new QToolButton(this);
1618 closeBufferButton->setPalette(pal);
1619 // FIXME: rename the icon to closebuffer.png
1620 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "svgz,png")));
1621 closeBufferButton->setText("Close File");
1622 closeBufferButton->setAutoRaise(true);
1623 closeBufferButton->setCursor(Qt::ArrowCursor);
1624 closeBufferButton->setToolTip(qt_("Close File"));
1625 closeBufferButton->setEnabled(true);
1626 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1627 this, SLOT(closeCurrentBuffer()));
1628 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1630 // set TabBar behaviour
1631 QTabBar * tb = tabBar();
1632 tb->setTabsClosable(!lyxrc.single_close_tab_button);
1633 tb->setSelectionBehaviorOnRemove(QTabBar::SelectPreviousTab);
1634 tb->setElideMode(Qt::ElideNone);
1635 // allow dragging tabs
1636 tb->setMovable(true);
1637 // make us responsible for the context menu of the tabbar
1638 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1639 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1640 this, SLOT(showContextMenu(const QPoint &)));
1641 connect(tb, SIGNAL(tabCloseRequested(int)),
1642 this, SLOT(closeTab(int)));
1644 setUsesScrollButtons(true);
1648 void TabWorkArea::mousePressEvent(QMouseEvent *me)
1650 if (me->button() == Qt::MidButton)
1651 midpressed_tab_ = tabBar()->tabAt(me->pos());
1653 QTabWidget::mousePressEvent(me);
1657 void TabWorkArea::mouseReleaseEvent(QMouseEvent *me)
1659 if (me->button() == Qt::MidButton) {
1660 int const midreleased_tab = tabBar()->tabAt(me->pos());
1661 if (midpressed_tab_ == midreleased_tab && posIsTab(me->pos()))
1662 closeTab(midreleased_tab);
1664 QTabWidget::mouseReleaseEvent(me);
1668 void TabWorkArea::paintEvent(QPaintEvent * event)
1670 if (tabBar()->isVisible()) {
1671 QTabWidget::paintEvent(event);
1673 // Prevent the selected tab to influence the
1674 // painting of the frame of the tab widget.
1675 // This is needed for gtk style in Qt.
1676 QStylePainter p(this);
1677 #if QT_VERSION < 0x050000
1678 QStyleOptionTabWidgetFrameV2 opt;
1680 QStyleOptionTabWidgetFrame opt;
1682 initStyleOption(&opt);
1683 opt.rect = style()->subElementRect(QStyle::SE_TabWidgetTabPane,
1685 opt.selectedTabRect = QRect();
1686 p.drawPrimitive(QStyle::PE_FrameTabWidget, opt);
1691 bool TabWorkArea::posIsTab(QPoint position)
1693 // tabAt returns -1 if tab does not covers position
1694 return tabBar()->tabAt(position) > -1;
1698 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1700 if (event->button() != Qt::LeftButton)
1703 // this code chunk is unnecessary because it seems the event only makes
1704 // it this far if it is not on a tab. I'm not sure why this is (maybe
1705 // it is handled and ended in DragTabBar?), and thus I'm not sure if
1706 // this is true in all cases and if it will be true in the future so I
1707 // leave this code for now. (skostysh, 2016-07-21)
1709 // return early if double click on existing tabs
1710 if (posIsTab(event->pos()))
1713 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1717 void TabWorkArea::setFullScreen(bool full_screen)
1719 for (int i = 0; i != count(); ++i) {
1720 if (GuiWorkArea * wa = workArea(i))
1721 wa->setFullScreen(full_screen);
1724 if (lyxrc.full_screen_tabbar)
1725 showBar(!full_screen && count() > 1);
1727 showBar(count() > 1);
1731 void TabWorkArea::showBar(bool show)
1733 tabBar()->setEnabled(show);
1734 tabBar()->setVisible(show);
1735 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1736 setTabsClosable(!lyxrc.single_close_tab_button);
1740 GuiWorkAreaContainer * TabWorkArea::widget(int index) const
1742 QWidget * w = QTabWidget::widget(index);
1745 GuiWorkAreaContainer * wac = dynamic_cast<GuiWorkAreaContainer *>(w);
1751 GuiWorkAreaContainer * TabWorkArea::currentWidget() const
1753 return widget(currentIndex());
1757 GuiWorkArea * TabWorkArea::workArea(int index) const
1759 GuiWorkAreaContainer * w = widget(index);
1762 return w->workArea();
1766 GuiWorkArea * TabWorkArea::currentWorkArea() const
1768 return workArea(currentIndex());
1772 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer) const
1774 // FIXME: this method doesn't work if we have more than one work area
1775 // showing the same buffer.
1776 for (int i = 0; i != count(); ++i) {
1777 GuiWorkArea * wa = workArea(i);
1778 LASSERT(wa, return nullptr);
1779 if (&wa->bufferView().buffer() == &buffer)
1786 void TabWorkArea::closeAll()
1789 QWidget * wac = widget(0);
1790 LASSERT(wac, return);
1797 int TabWorkArea::indexOfWorkArea(GuiWorkArea * w) const
1799 for (int index = 0; index < count(); ++index)
1800 if (workArea(index) == w)
1806 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1808 LASSERT(work_area, return false);
1809 int index = indexOfWorkArea(work_area);
1813 if (index == currentIndex())
1814 // Make sure the work area is up to date.
1815 on_currentTabChanged(index);
1817 // Switch to the work area.
1818 setCurrentIndex(index);
1819 work_area->setFocus();
1825 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1827 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1828 GuiWorkAreaContainer * wac = new GuiWorkAreaContainer(wa);
1829 wa->setUpdatesEnabled(false);
1830 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1831 // when hiding it again below).
1832 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1833 showBar(count() > 0);
1834 addTab(wac, wa->windowTitle());
1835 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1836 this, SLOT(updateTabTexts()));
1837 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1838 setFullScreen(true);
1840 // Hide tabbar if there's only one tab.
1841 showBar(count() > 1);
1849 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1851 LASSERT(work_area, return false);
1852 int index = indexOfWorkArea(work_area);
1856 work_area->setUpdatesEnabled(false);
1857 QWidget * wac = widget(index);
1862 // make sure the next work area is enabled.
1863 currentWidget()->setUpdatesEnabled(true);
1864 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1865 setFullScreen(true);
1867 // Show tabbar only if there's more than one tab.
1868 showBar(count() > 1);
1870 lastWorkAreaRemoved();
1878 void TabWorkArea::on_currentTabChanged(int i)
1880 // returns e.g. on application destruction
1883 GuiWorkArea * wa = workArea(i);
1884 LASSERT(wa, return);
1885 wa->setUpdatesEnabled(true);
1886 wa->scheduleRedraw(true);
1889 currentWorkAreaChanged(wa);
1891 LYXERR(Debug::GUI, "currentTabChanged " << i
1892 << " File: " << wa->bufferView().buffer().absFileName());
1896 void TabWorkArea::closeCurrentBuffer()
1899 if (clicked_tab_ == -1)
1900 wa = currentWorkArea();
1902 wa = workArea(clicked_tab_);
1903 LASSERT(wa, return);
1905 wa->view().closeWorkArea(wa);
1909 void TabWorkArea::hideCurrentTab()
1912 if (clicked_tab_ == -1)
1913 wa = currentWorkArea();
1915 wa = workArea(clicked_tab_);
1916 LASSERT(wa, return);
1918 wa->view().hideWorkArea(wa);
1922 void TabWorkArea::closeTab(int index)
1924 on_currentTabChanged(index);
1927 wa = currentWorkArea();
1929 wa = workArea(index);
1930 LASSERT(wa, return);
1932 wa->view().closeWorkArea(wa);
1939 /// make vector happy
1940 DisplayPath() : tab_(-1), dottedPrefix_(false) {}
1942 DisplayPath(int tab, FileName const & filename)
1945 // Recode URL encoded chars via fromPercentEncoding()
1946 string const fn = (filename.extension() == "lyx")
1947 ? filename.onlyFileNameWithoutExt() : filename.onlyFileName();
1948 filename_ = QString::fromUtf8(QByteArray::fromPercentEncoding(fn.c_str()));
1949 postfix_ = toqstr(filename.absoluteFilePath()).
1950 split("/", QString::SkipEmptyParts);
1951 postfix_.pop_back();
1952 abs_ = toqstr(filename.absoluteFilePath());
1953 dottedPrefix_ = false;
1956 /// Absolute path for debugging.
1961 /// Add the first segment from the postfix or three dots to the prefix.
1962 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1963 /// when really needed.
1964 void shiftPathSegment(bool dotted)
1966 if (postfix_.count() <= 0)
1970 if (dottedPrefix_ && !prefix_.isEmpty())
1971 prefix_ += ellipsisSlash_;
1972 prefix_ += postfix_.front() + "/";
1974 dottedPrefix_ = dotted && !prefix_.isEmpty();
1975 postfix_.pop_front();
1978 QString displayString() const
1980 if (prefix_.isEmpty())
1983 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1984 return prefix_ + (dots ? ellipsisSlash_ : "") + filename_;
1987 QString forecastPathString() const
1989 if (postfix_.count() == 0)
1990 return displayString();
1993 + (dottedPrefix_ ? ellipsisSlash_ : "")
1994 + postfix_.front() + "/";
1997 bool final() const { return postfix_.empty(); }
1999 int tab() const { return tab_; }
2003 static QString const ellipsisSlash_;
2007 QStringList postfix_;
2019 QString const DisplayPath::ellipsisSlash_ = QString(QChar(0x2026)) + "/";
2023 bool operator<(DisplayPath const & a, DisplayPath const & b)
2025 return a.displayString() < b.displayString();
2029 bool operator==(DisplayPath const & a, DisplayPath const & b)
2031 return a.displayString() == b.displayString();
2035 void TabWorkArea::updateTabTexts()
2037 int const n = count();
2040 std::list<DisplayPath> paths;
2041 typedef std::list<DisplayPath>::iterator It;
2043 // collect full names first: path into postfix, empty prefix and
2044 // filename without extension
2045 for (int i = 0; i < n; ++i) {
2046 GuiWorkArea * i_wa = workArea(i);
2047 FileName const fn = i_wa->bufferView().buffer().fileName();
2048 paths.push_back(DisplayPath(i, fn));
2051 // go through path segments and see if it helps to make the path more unique
2052 bool somethingChanged = true;
2053 bool allFinal = false;
2054 while (somethingChanged && !allFinal) {
2055 // adding path segments changes order
2058 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
2059 somethingChanged = false;
2062 // find segments which are not unique (i.e. non-atomic)
2063 It it = paths.begin();
2065 QString segString = it->displayString();
2066 for (; it != paths.end(); ++it) {
2067 // look to the next item
2072 allFinal = allFinal && it->final();
2074 LYXERR(Debug::GUI, "it = " << it->abs()
2075 << " => " << it->displayString());
2077 // still the same segment?
2079 if ((next != paths.end()
2080 && (nextString = next->displayString()) == segString))
2082 LYXERR(Debug::GUI, "segment ended");
2084 // only a trivial one with one element?
2085 if (it == segStart) {
2086 // start new segment
2088 segString = nextString;
2092 // We found a non-atomic segment
2093 // We know that segStart <= it < next <= paths.end().
2094 // The assertion below tells coverity about it.
2095 LATTEST(segStart != paths.end());
2096 QString dspString = segStart->forecastPathString();
2097 LYXERR(Debug::GUI, "first forecast found for "
2098 << segStart->abs() << " => " << dspString);
2101 // Shift path segments and hope for the best
2102 // that it makes the path more unique.
2103 somethingChanged = true;
2104 bool moreUnique = false;
2105 for (; sit != next; ++sit) {
2106 if (sit->forecastPathString() != dspString) {
2107 LYXERR(Debug::GUI, "different forecast found for "
2108 << sit->abs() << " => " << sit->forecastPathString());
2112 LYXERR(Debug::GUI, "same forecast found for "
2113 << sit->abs() << " => " << dspString);
2116 // if the path segment helped, add it. Otherwise add dots
2117 bool dots = !moreUnique;
2118 LYXERR(Debug::GUI, "using dots = " << dots);
2119 for (sit = segStart; sit != next; ++sit) {
2120 sit->shiftPathSegment(dots);
2121 LYXERR(Debug::GUI, "shifting "
2122 << sit->abs() << " => " << sit->displayString());
2125 // start new segment
2127 segString = nextString;
2131 // set new tab titles
2132 for (It it = paths.begin(); it != paths.end(); ++it) {
2133 int const tab_index = it->tab();
2134 Buffer const & buf = workArea(tab_index)->bufferView().buffer();
2135 QString tab_text = it->displayString().replace("&", "&&");
2136 if (!buf.fileName().empty() && !buf.isClean())
2138 QString tab_tooltip = it->abs();
2139 if (buf.hasReadonlyFlag()) {
2140 setTabIcon(tab_index, QIcon(getPixmap("images/", "emblem-readonly", "svgz,png")));
2141 tab_tooltip = qt_("%1 (read only)").arg(tab_tooltip);
2143 setTabIcon(tab_index, QIcon());
2144 if (buf.notifiesExternalModification()) {
2145 QString const warn = qt_("%1 (modified externally)");
2146 tab_tooltip = warn.arg(tab_tooltip);
2147 tab_text += QChar(0x26a0);
2149 setTabText(tab_index, tab_text);
2150 setTabToolTip(tab_index, tab_tooltip);
2155 void TabWorkArea::showContextMenu(const QPoint & pos)
2158 clicked_tab_ = tabBar()->tabAt(pos);
2159 if (clicked_tab_ == -1)
2162 GuiWorkArea * wa = workArea(clicked_tab_);
2163 LASSERT(wa, return);
2167 popup.addAction(QIcon(getPixmap("images/", "hidetab", "svgz,png")),
2168 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
2170 // we want to show the 'close' option only if this is not a child buffer.
2171 Buffer const & buf = wa->bufferView().buffer();
2173 popup.addAction(QIcon(getPixmap("images/", "closetab", "svgz,png")),
2174 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
2175 popup.exec(tabBar()->mapToGlobal(pos));
2181 void TabWorkArea::moveTab(int fromIndex, int toIndex)
2183 QWidget * w = widget(fromIndex);
2184 QIcon icon = tabIcon(fromIndex);
2185 QString text = tabText(fromIndex);
2187 setCurrentIndex(fromIndex);
2188 removeTab(fromIndex);
2189 insertTab(toIndex, w, icon, text);
2190 setCurrentIndex(toIndex);
2194 GuiWorkAreaContainer::GuiWorkAreaContainer(GuiWorkArea * wa, QWidget * parent)
2195 : QWidget(parent), wa_(wa)
2197 LASSERT(wa, return);
2198 Ui::WorkAreaUi::setupUi(this);
2199 layout()->addWidget(wa);
2200 connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
2201 this, SLOT(updateDisplay()));
2202 connect(reloadPB, SIGNAL(clicked()), this, SLOT(reload()));
2203 connect(ignorePB, SIGNAL(clicked()), this, SLOT(ignore()));
2204 setMessageColour({notificationFrame}, {reloadPB, ignorePB});
2209 void GuiWorkAreaContainer::updateDisplay()
2211 Buffer const & buf = wa_->bufferView().buffer();
2212 notificationFrame->setHidden(!buf.notifiesExternalModification());
2213 QString const label = qt_("<b>The file %1 changed on disk.</b>")
2214 .arg(toqstr(buf.fileName().displayName()));
2215 externalModificationLabel->setText(label);
2219 void GuiWorkAreaContainer::dispatch(FuncRequest f) const
2221 lyx::dispatch(FuncRequest(LFUN_BUFFER_SWITCH,
2222 wa_->bufferView().buffer().absFileName()));
2227 void GuiWorkAreaContainer::reload() const
2229 dispatch(FuncRequest(LFUN_BUFFER_RELOAD));
2233 void GuiWorkAreaContainer::ignore() const
2235 dispatch(FuncRequest(LFUN_BUFFER_EXTERNAL_MODIFICATION_CLEAR));
2239 void GuiWorkAreaContainer::mouseDoubleClickEvent(QMouseEvent * event)
2241 // prevent TabWorkArea from opening a new buffer on double click
2246 } // namespace frontend
2249 #include "moc_GuiWorkArea.cpp"