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 void draw(QPainter & painter)
138 if (!rect_.isValid())
142 int l = x_ - rect_.left();
143 int r = rect_.right() - x_;
144 int bot = rect_.bottom();
146 // draw vertical line
147 painter.fillRect(x_, y, caret_width_, rect_.height(), color_);
149 // draw RTL/LTR indication
150 painter.setPen(color_);
153 painter.drawLine(x_, bot, x_ - l, bot);
155 painter.drawLine(x_, bot, x_ + caret_width_ + r, bot);
158 // draw completion triangle
160 int m = y + rect_.height() / 2;
161 int d = TabIndicatorWidth - 1;
163 painter.drawLine(x_ - 1, m - d, x_ - 1 - d, m);
164 painter.drawLine(x_ - 1, m + d, x_ - 1 - d, m);
166 painter.drawLine(x_ + caret_width_, m - d, x_ + caret_width_ + d, m);
167 painter.drawLine(x_ + caret_width_, m + d, x_ + caret_width_ + d, m);
172 void update(int x, int y, int h, bool l_shape,
173 bool rtl, bool completable)
175 color_ = guiApp->colorCache().get(Color_cursor);
178 completable_ = completable;
181 // extension to left and right
185 // RTL/LTR indication
193 // completion triangle
196 l = max(l, TabIndicatorWidth);
198 r = max(r, TabIndicatorWidth);
201 //FIXME: LyXRC::cursor_width should be caret_width
202 caret_width_ = lyxrc.cursor_width
204 : 1 + int((lyxrc.currentZoom + 50) / 200.0);
206 // compute overall rectangle
207 rect_ = QRect(x - l, y, caret_width_ + r + l, h);
210 QRect const & rect() { return rect_; }
213 /// caret is in RTL or LTR text
215 /// indication for RTL or LTR
217 /// triangle to show that a completion is available
221 /// rectangle, possibly with l_shape and completion triangle
223 /// x position (were the vertical line is drawn)
225 /// the width of the vertical blinking bar
230 // This is a 'heartbeat' generating synthetic mouse move events when the
231 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
232 SyntheticMouseEvent::SyntheticMouseEvent()
233 : timeout(200), restart_timeout(true)
237 GuiWorkArea::Private::Private(GuiWorkArea * parent)
238 : p(parent), buffer_view_(0), lyx_view_(0),
239 caret_(0), caret_visible_(false),
240 need_resize_(false), preedit_lines_(1),
241 last_pixel_ratio_(1.0),
242 completer_(new GuiCompleter(p, p)), dialog_mode_(false), shell_escape_(false),
243 read_only_(false), clean_(true), externally_modified_(false)
245 int const time = QApplication::cursorFlashTime() / 2;
247 caret_timeout_.setInterval(time);
248 caret_timeout_.start();
250 // let's initialize this just to be safe
251 caret_timeout_.setInterval(500);
256 GuiWorkArea::Private::~Private()
258 // If something is wrong with the buffer, we can ignore it safely
260 buffer_view_->buffer().workAreaManager().remove(p);
264 // Completer has a QObject parent and is thus automatically destroyed.
266 // delete completer_;
270 GuiWorkArea::GuiWorkArea(QWidget * /* w */)
271 : d(new Private(this))
276 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
277 : d(new Private(this))
279 new CompressorProxy(this); // not a leak
281 buffer.params().display_pixel_ratio = theGuiApp()->pixelRatio();
287 double GuiWorkArea::pixelRatio() const
289 #if QT_VERSION >= 0x050000
290 return qt_scale_factor * devicePixelRatio();
297 void GuiWorkArea::init()
300 connect(&d->caret_timeout_, SIGNAL(timeout()),
301 this, SLOT(toggleCaret()));
303 // This connection is closed at the same time as this is destroyed.
304 d->synthetic_mouse_event_.timeout.timeout.connect([this](){
305 generateSyntheticMouseEvent();
309 // With Qt4.5 a mouse event will happen before the first paint event
310 // so make sure that the buffer view has an up to date metrics.
311 d->buffer_view_->resize(viewport()->width(), viewport()->height());
312 d->caret_ = new frontend::CaretWidget();
314 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
315 setAcceptDrops(true);
316 setMouseTracking(true);
317 setMinimumSize(100, 70);
318 setFrameStyle(QFrame::NoFrame);
321 d->updateCursorShape();
323 // we paint our own background
324 viewport()->setAttribute(Qt::WA_OpaquePaintEvent);
326 setFocusPolicy(Qt::StrongFocus);
328 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
329 << " viewport height: " << viewport()->height());
331 // Enables input methods for asian languages.
332 // Must be set when creating custom text editing widgets.
333 setAttribute(Qt::WA_InputMethodEnabled, true);
337 GuiWorkArea::~GuiWorkArea()
343 void GuiWorkArea::Private::updateCursorShape()
345 bool const clickable = buffer_view_ && buffer_view_->clickableInset();
346 p->viewport()->setCursor(clickable ? Qt::PointingHandCursor
351 void GuiWorkArea::setGuiView(GuiView & gv)
357 void GuiWorkArea::setBuffer(Buffer & buffer)
359 delete d->buffer_view_;
360 d->buffer_view_ = new BufferView(buffer);
361 buffer.workAreaManager().add(this);
363 // HACK: Prevents an additional redraw when the scrollbar pops up
364 // which regularily happens on documents with more than one page.
365 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
366 // Since we have no geometry information yet, we assume that
367 // a document needs a scrollbar if there is more then four
368 // paragraph in the outermost text.
369 if (buffer.text().paragraphs().size() > 4)
370 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
371 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
372 Q_EMIT bufferViewChanged();
376 void GuiWorkArea::fixVerticalScrollBar()
379 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
383 void GuiWorkArea::close()
385 d->lyx_view_->removeWorkArea(this);
389 void GuiWorkArea::setFullScreen(bool full_screen)
391 d->buffer_view_->setFullScreen(full_screen);
392 setFrameStyle(QFrame::NoFrame);
394 setFrameStyle(QFrame::NoFrame);
395 if (lyxrc.full_screen_scrollbar)
396 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
398 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
402 BufferView & GuiWorkArea::bufferView()
404 return *d->buffer_view_;
408 BufferView const & GuiWorkArea::bufferView() const
410 return *d->buffer_view_;
414 void GuiWorkArea::stopBlinkingCaret()
416 d->caret_timeout_.stop();
421 void GuiWorkArea::startBlinkingCaret()
423 // do not show the cursor if the view is busy
429 d->buffer_view_->caretPosAndHeight(p, h);
430 // Don't start blinking if the cursor isn't on screen.
431 if (!d->buffer_view_->cursorInView(p, h))
436 // Avoid blinking when debugging PAINTING, since it creates too much noise
437 if (!lyxerr.debugging(Debug::PAINTING)) {
438 // we are not supposed to cache this value.
439 int const time = QApplication::cursorFlashTime() / 2;
442 d->caret_timeout_.setInterval(time);
443 d->caret_timeout_.start();
448 void GuiWorkArea::toggleCaret()
450 if (d->caret_visible_)
457 void GuiWorkArea::scheduleRedraw(bool update_metrics)
460 // No need to redraw in this case.
463 // No need to do anything if this is the current view. The BufferView
464 // metrics are already up to date.
465 if (update_metrics || d->lyx_view_ != guiApp->currentView()
466 || d->lyx_view_->currentWorkArea() != this) {
467 // FIXME: it would be nice to optimize for the off-screen case.
468 d->buffer_view_->cursor().fixIfBroken();
469 d->buffer_view_->updateMetrics();
470 d->buffer_view_->cursor().fixIfBroken();
473 // update caret position, because otherwise it has to wait until
474 // the blinking interval is over
475 d->updateCaretGeometry();
477 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
478 viewport()->update();
480 /// FIXME: is this still true now that paintEvent does the actual painting?
481 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
482 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
483 d->updateScrollbar();
484 d->lyx_view_->updateStatusBar();
486 if (lyxerr.debugging(Debug::WORKAREA))
487 d->buffer_view_->coordCache().dump();
491 d->updateCursorShape();
495 // Keep in sync with GuiWorkArea::processKeySym below
496 bool GuiWorkArea::queryKeySym(KeySymbol const & key, KeyModifier mod) const
498 return guiApp->queryKeySym(key, mod);
502 // Keep in sync with GuiWorkArea::queryKeySym above
503 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
505 if (d->lyx_view_->isFullScreen() && d->lyx_view_->menuBar()->isVisible()
506 && lyxrc.full_screen_menubar) {
507 // FIXME HACK: we should not have to do this here. See related comment
508 // in GuiView::event() (QEvent::ShortcutOverride)
509 d->lyx_view_->menuBar()->hide();
512 // In order to avoid bad surprise in the middle of an operation,
513 // we better stop the blinking caret...
514 // the caret gets restarted in GuiView::restartCaret()
516 guiApp->processKeySym(key, mod);
520 void GuiWorkArea::Private::dispatch(FuncRequest const & cmd)
523 if (cmd.action() == LFUN_FILE_OPEN) {
525 lyx_view_->dispatch(cmd, dr);
529 bool const notJustMovingTheMouse =
530 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
532 // In order to avoid bad surprise in the middle of an operation, we better stop
533 // the blinking caret.
534 if (notJustMovingTheMouse)
535 p->stopBlinkingCaret();
537 buffer_view_->mouseEventDispatch(cmd);
539 // Skip these when selecting
540 // FIXME: let GuiView take care of those.
541 if (cmd.action() != LFUN_MOUSE_MOTION) {
542 completer_->updateVisibility(false, false);
543 lyx_view_->updateDialogs();
544 lyx_view_->updateStatusBar();
547 // GUI tweaks except with mouse motion with no button pressed.
548 if (notJustMovingTheMouse) {
549 // Slight hack: this is only called currently when we
550 // clicked somewhere, so we force through the display
551 // of the new status here.
552 // FIXME: let GuiView take care of those.
553 lyx_view_->clearMessage();
555 // Show the caret immediately after any operation
556 p->startBlinkingCaret();
563 void GuiWorkArea::Private::resizeBufferView()
565 // WARNING: Please don't put any code that will trigger a repaint here!
566 // We are already inside a paint event.
567 p->stopBlinkingCaret();
568 // Warn our container (GuiView).
573 buffer_view_->caretPosAndHeight(point, h);
574 bool const caret_in_view = buffer_view_->cursorInView(point, h);
575 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
577 buffer_view_->scrollToCursor();
578 updateCaretGeometry();
580 // Update scrollbars which might have changed due different
581 // BufferView dimension. This is especially important when the
582 // BufferView goes from zero-size to the real-size for the first time,
583 // as the scrollbar paramters are then set for the first time.
586 need_resize_ = false;
588 // Eventually, restart the caret after the resize event.
589 // We might be resizing even if the focus is on another widget so we only
590 // restart the caret if we have the focus.
592 QTimer::singleShot(50, p, SLOT(startBlinkingCaret()));
596 void GuiWorkArea::Private::updateCaretGeometry()
600 buffer_view_->caretPosAndHeight(point, h);
601 if (!buffer_view_->cursorInView(point, h))
605 bool l_shape = false;
606 Font const & realfont = buffer_view_->cursor().real_current_font;
607 BufferParams const & bp = buffer_view_->buffer().params();
608 bool const samelang = realfont.language() == bp.language;
609 bool const isrtl = realfont.isVisibleRightToLeft();
611 if (!samelang || isrtl != bp.language->rightToLeft())
614 // The ERT language hack needs fixing up
615 if (realfont.language() == latex_language)
618 // show caret on screen
619 Cursor & cur = buffer_view_->cursor();
620 bool completable = cur.inset().showCompletionCursor()
621 && completer_->completionAvailable()
622 && !completer_->popupVisible()
623 && !completer_->inlineVisible();
624 caret_visible_ = true;
626 //int cur_x = buffer_view_->getPos(cur).x_;
627 // We may have decided to slide the cursor row so that caret
629 point.x_ -= buffer_view_->horizScrollOffset();
631 caret_->update(point.x_, point.y_, h, l_shape, isrtl, completable);
635 void GuiWorkArea::Private::showCaret()
640 updateCaretGeometry();
641 p->viewport()->update(caret_->rect());
645 void GuiWorkArea::Private::hideCaret()
650 caret_visible_ = false;
651 //if (!qApp->focusWidget())
652 p->viewport()->update(caret_->rect());
656 void GuiWorkArea::Private::updateScrollbar()
658 // Prevent setRange() and setSliderPosition from causing recursive calls via
659 // the signal valueChanged. (#10311)
660 QObject::disconnect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
661 p, SLOT(scrollTo(int)));
662 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
663 p->verticalScrollBar()->setRange(scroll_.min, scroll_.max);
664 p->verticalScrollBar()->setPageStep(scroll_.page_step);
665 p->verticalScrollBar()->setSingleStep(scroll_.single_step);
666 p->verticalScrollBar()->setSliderPosition(0);
667 // Connect to the vertical scroll bar
668 QObject::connect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
669 p, SLOT(scrollTo(int)));
673 void GuiWorkArea::scrollTo(int value)
676 d->buffer_view_->scrollDocView(value, true);
678 if (lyxrc.cursor_follows_scrollbar) {
679 d->buffer_view_->setCursorFromScrollbar();
680 // FIXME: let GuiView take care of those.
681 d->lyx_view_->updateLayoutList();
683 // Show the caret immediately after any operation.
684 startBlinkingCaret();
687 QApplication::syncX();
692 bool GuiWorkArea::event(QEvent * e)
695 case QEvent::ToolTip: {
696 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
697 if (lyxrc.use_tooltip) {
698 QPoint pos = helpEvent->pos();
699 if (pos.x() < viewport()->width()) {
700 QString s = toqstr(d->buffer_view_->toolTip(pos.x(), pos.y()));
701 QToolTip::showText(helpEvent->globalPos(), formatToolTip(s,35));
704 QToolTip::hideText();
706 // Don't forget to accept the event!
711 case QEvent::ShortcutOverride:
712 // keyPressEvent is ShortcutOverride-aware and only accepts the event in
714 keyPressEvent(static_cast<QKeyEvent *>(e));
715 return e->isAccepted();
717 case QEvent::KeyPress: {
718 // We catch this event in order to catch the Tab or Shift+Tab key press
719 // which are otherwise reserved to focus switching between controls
721 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
722 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
723 || (ke->key() == Qt::Key_Backtab && (
724 ke->modifiers() == Qt::ShiftModifier
725 || ke->modifiers() == Qt::NoModifier))) {
729 return QAbstractScrollArea::event(e);
733 return QAbstractScrollArea::event(e);
739 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
742 if (e->reason() == QContextMenuEvent::Mouse)
743 // the menu name is set on mouse press
744 name = d->context_menu_name_;
746 QPoint pos = e->pos();
747 Cursor const & cur = d->buffer_view_->cursor();
748 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
749 // Do not access the context menu of math right in front of before
750 // the cursor. This does not work when the cursor is in text.
751 Inset * inset = cur.paragraph().getInset(cur.pos());
752 if (inset && inset->asInsetMath())
754 else if (cur.pos() > 0) {
755 inset = cur.paragraph().getInset(cur.pos() - 1);
760 name = d->buffer_view_->contextMenu(pos.x(), pos.y());
767 // always show mnemonics when the keyboard is used to show the context menu
768 // FIXME: This should be fixed in Qt itself
769 bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
770 QMenu * menu = guiApp->menus().menu(toqstr(name), *d->lyx_view_, keyboard);
775 // Position the menu to the right.
776 // FIXME: menu position should be different for RTL text.
777 menu->exec(e->globalPos());
782 void GuiWorkArea::focusInEvent(QFocusEvent * e)
784 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
785 if (d->lyx_view_->currentWorkArea() != this) {
786 d->lyx_view_->setCurrentWorkArea(this);
787 d->lyx_view_->currentWorkArea()->bufferView().buffer().updateBuffer();
790 startBlinkingCaret();
791 QAbstractScrollArea::focusInEvent(e);
795 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
797 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
799 QAbstractScrollArea::focusOutEvent(e);
803 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
805 if (d->dc_event_.active && d->dc_event_ == *e) {
806 d->dc_event_.active = false;
807 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
808 q_button_state(e->button()), q_key_state(e->modifiers()));
814 #if (QT_VERSION < 0x050000) && !defined(__HAIKU__)
815 inputContext()->reset();
818 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
819 q_button_state(e->button()), q_key_state(e->modifiers()));
822 // Save the context menu on mouse press, because also the mouse
823 // cursor is set on mouse press. Afterwards, we can either release
824 // the mousebutton somewhere else, or the cursor might have moved
825 // due to the DEPM. We need to do this after the mouse has been
826 // set in dispatch(), because the selection state might change.
827 if (e->button() == Qt::RightButton)
828 d->context_menu_name_ = d->buffer_view_->contextMenu(e->x(), e->y());
834 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
836 if (d->synthetic_mouse_event_.timeout.running())
837 d->synthetic_mouse_event_.timeout.stop();
839 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
840 q_button_state(e->button()), q_key_state(e->modifiers()));
846 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
848 // we kill the triple click if we move
849 doubleClickTimeout();
850 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
851 q_motion_state(e->buttons()), q_key_state(e->modifiers()));
855 // If we're above or below the work area...
856 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
857 && e->buttons() == mouse_button::button1) {
858 // Make sure only a synthetic event can cause a page scroll,
859 // so they come at a steady rate:
861 // _Force_ a scroll up:
862 cmd.set_y(e->y() - 21);
864 cmd.set_y(e->y() + 21);
865 // Store the event, to be handled when the timeout expires.
866 d->synthetic_mouse_event_.cmd = cmd;
868 if (d->synthetic_mouse_event_.timeout.running()) {
869 // Discard the event. Note that it _may_ be handled
870 // when the timeout expires if
871 // synthetic_mouse_event_.cmd has not been overwritten.
872 // Ie, when the timeout expires, we handle the
873 // most recent event but discard all others that
874 // occurred after the one used to start the timeout
875 // in the first place.
879 d->synthetic_mouse_event_.restart_timeout = true;
880 d->synthetic_mouse_event_.timeout.start();
881 // Fall through to handle this event...
883 } else if (d->synthetic_mouse_event_.timeout.running()) {
884 // Store the event, to be possibly handled when the timeout
886 // Once the timeout has expired, normal control is returned
887 // to mouseMoveEvent (restart_timeout = false).
888 // This results in a much smoother 'feel' when moving the
889 // mouse back into the work area.
890 d->synthetic_mouse_event_.cmd = cmd;
891 d->synthetic_mouse_event_.restart_timeout = false;
898 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
900 // Wheel rotation by one notch results in a delta() of 120 (see
901 // documentation of QWheelEvent)
902 double const delta = ev->delta() / 120.0;
904 switch (lyxrc.scroll_wheel_zoom) {
905 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
906 zoom = ev->modifiers() & Qt::ControlModifier;
907 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
909 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
910 zoom = ev->modifiers() & Qt::ShiftModifier;
911 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
913 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
914 zoom = ev->modifiers() & Qt::AltModifier;
915 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
917 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
921 docstring arg = convert<docstring>(int(5 * delta));
922 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
926 // Take into account the desktop wide settings.
927 int const lines = qApp->wheelScrollLines();
928 int const page_step = verticalScrollBar()->pageStep();
929 // Test if the wheel mouse is set to one screen at a time.
930 // This is according to
931 // https://doc.qt.io/qt-5/qapplication.html#wheelScrollLines-prop
933 min(lines * verticalScrollBar()->singleStep(), page_step);
935 // Take into account the rotation and the user preferences.
936 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
937 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
938 << " delta = " << delta << " scroll_value = " << scroll_value
939 << " page_step = " << page_step);
941 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
947 void GuiWorkArea::generateSyntheticMouseEvent()
949 int const e_y = d->synthetic_mouse_event_.cmd.y();
950 int const wh = d->buffer_view_->workHeight();
951 bool const up = e_y < 0;
952 bool const down = e_y > wh;
954 // Set things off to generate the _next_ 'pseudo' event.
956 if (d->synthetic_mouse_event_.restart_timeout) {
957 // This is some magic formulae to determine the speed
958 // of scrolling related to the position of the mouse.
961 int dist = up ? -e_y : e_y - wh;
962 time = max(min(200, 250000 / (dist * dist)), 1) ;
965 step = 80000 / (time * time);
969 d->synthetic_mouse_event_.timeout.setTimeout(time);
970 d->synthetic_mouse_event_.timeout.start();
973 // Can we scroll further ?
974 int const value = verticalScrollBar()->value();
975 if (value == verticalScrollBar()->maximum()
976 || value == verticalScrollBar()->minimum()) {
977 d->synthetic_mouse_event_.timeout.stop();
982 if (step <= 2 * wh) {
983 d->buffer_view_->scroll(up ? -step : step);
984 d->buffer_view_->updateMetrics();
986 d->buffer_view_->scrollDocView(value + (up ? -step : step), false);
989 // In which paragraph do we have to set the cursor ?
990 Cursor & cur = d->buffer_view_->cursor();
991 // FIXME: we don't know how to handle math.
992 Text * text = cur.text();
995 TextMetrics const & tm = d->buffer_view_->textMetrics(text);
997 // Quit gracefully if there are no metrics, since otherwise next
998 // line would crash (bug #10324).
999 // This situation seems related to a (not yet understood) timing problem.
1003 pair<pit_type, const ParagraphMetrics *> pp = up ? tm.first() : tm.last();
1004 ParagraphMetrics const & pm = *pp.second;
1005 pit_type const pit = pp.first;
1007 if (pm.rows().empty())
1010 // Find the row at which we set the cursor.
1011 RowList::const_iterator rit = pm.rows().begin();
1012 RowList::const_iterator rlast = pm.rows().end();
1013 int yy = pm.position() - pm.ascent();
1014 for (--rlast; rit != rlast; ++rit) {
1015 int h = rit->height();
1016 if ((up && yy + h > 0)
1017 || (!up && yy + h > wh - defaultRowHeight()))
1022 // Find the position of the cursor
1024 int x = d->synthetic_mouse_event_.cmd.x();
1025 pos_type const pos = tm.getPosNearX(*rit, x, bound);
1030 cur.boundary(bound);
1032 d->buffer_view_->buffer().changed(false);
1037 // CompressorProxy adapted from Kuba Ober https://stackoverflow.com/a/21006207
1038 CompressorProxy::CompressorProxy(GuiWorkArea * wa) : QObject(wa), flag_(false)
1040 qRegisterMetaType<KeySymbol>("KeySymbol");
1041 qRegisterMetaType<KeyModifier>("KeyModifier");
1042 connect(wa, SIGNAL(compressKeySym(KeySymbol, KeyModifier, bool)),
1043 this, SLOT(slot(KeySymbol, KeyModifier, bool)),
1044 Qt::QueuedConnection);
1045 connect(this, SIGNAL(signal(KeySymbol, KeyModifier)),
1046 wa, SLOT(processKeySym(KeySymbol, KeyModifier)));
1050 bool CompressorProxy::emitCheck(bool isAutoRepeat)
1054 QCoreApplication::sendPostedEvents(this, QEvent::MetaCall); // recurse
1055 bool result = flag_;
1061 void CompressorProxy::slot(KeySymbol sym, KeyModifier mod, bool isAutoRepeat)
1063 if (emitCheck(isAutoRepeat))
1064 Q_EMIT signal(sym, mod);
1066 LYXERR(Debug::KEY, "system is busy: autoRepeat key event ignored");
1070 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
1072 // this is also called for ShortcutOverride events. In this case, one must
1073 // not act but simply accept the event explicitly.
1074 bool const act = (ev->type() != QEvent::ShortcutOverride);
1076 // Do not process here some keys if dialog_mode_ is set
1077 bool const for_dialog_mode = d->dialog_mode_
1078 && (ev->modifiers() == Qt::NoModifier
1079 || ev->modifiers() == Qt::ShiftModifier)
1080 && (ev->key() == Qt::Key_Escape
1081 || ev->key() == Qt::Key_Enter
1082 || ev->key() == Qt::Key_Return);
1083 // also do not use autoRepeat to input shortcuts
1084 bool const autoRepeat = ev->isAutoRepeat();
1086 if (for_dialog_mode || (!act && autoRepeat)) {
1091 // intercept some keys if completion popup is visible
1092 if (d->completer_->popupVisible()) {
1093 switch (ev->key()) {
1095 case Qt::Key_Return:
1097 d->completer_->activate();
1103 KeyModifier const m = q_key_state(ev->modifiers());
1105 if (act && lyxerr.debugging(Debug::KEY)) {
1107 if (m & ShiftModifier)
1109 if (m & ControlModifier)
1111 if (m & AltModifier)
1113 if (m & MetaModifier)
1115 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1116 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
1117 << " keyState: " << str);
1121 setKeySymbol(&sym, ev);
1124 Q_EMIT compressKeySym(sym, m, autoRepeat);
1127 // here, !autoRepeat, as determined at the beginning
1128 ev->setAccepted(queryKeySym(sym, m));
1135 void GuiWorkArea::doubleClickTimeout()
1137 d->dc_event_.active = false;
1141 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1143 d->dc_event_ = DoubleClick(ev);
1144 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1145 SLOT(doubleClickTimeout()));
1146 FuncRequest cmd(LFUN_MOUSE_DOUBLE, ev->x(), ev->y(),
1147 q_button_state(ev->button()), q_key_state(ev->modifiers()));
1153 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1155 QAbstractScrollArea::resizeEvent(ev);
1156 d->need_resize_ = true;
1161 void GuiWorkArea::Private::paintPreeditText(GuiPainter & pain)
1163 if (preedit_string_.empty())
1166 // FIXME: shall we use real_current_font here? (see #10478)
1167 FontInfo const font = buffer_view_->cursor().getFont().fontInfo();
1168 FontMetrics const & fm = theFontMetrics(font);
1169 int const height = fm.maxHeight();
1170 int cur_x = caret_->rect().left();
1171 int cur_y = caret_->rect().bottom();
1173 // get attributes of input method cursor.
1174 // cursor_pos : cursor position in preedit string.
1175 size_t cursor_pos = 0;
1176 bool cursor_is_visible = false;
1177 for (auto const & attr : preedit_attr_) {
1178 if (attr.type == QInputMethodEvent::Cursor) {
1179 cursor_pos = attr.start;
1180 cursor_is_visible = attr.length != 0;
1185 size_t const preedit_length = preedit_string_.length();
1187 // get position of selection in input method.
1188 // FIXME: isn't there a way to do this simplier?
1189 // rStart : cursor position in selected string in IM.
1191 // rLength : selected string length in IM.
1193 if (cursor_pos < preedit_length) {
1194 for (auto const & attr : preedit_attr_) {
1195 if (attr.type == QInputMethodEvent::TextFormat) {
1196 if (attr.start <= int(cursor_pos)
1197 && int(cursor_pos) < attr.start + attr.length) {
1198 rStart = attr.start;
1199 rLength = attr.length;
1200 if (!cursor_is_visible)
1201 cursor_pos += rLength;
1208 rStart = cursor_pos;
1212 int const right_margin = buffer_view_->rightMargin();
1213 Painter::preedit_style ps;
1214 // Most often there would be only one line:
1216 for (size_t pos = 0; pos != preedit_length; ++pos) {
1217 char_type const typed_char = preedit_string_[pos];
1218 // reset preedit string style
1219 ps = Painter::preedit_default;
1221 // if we reached the right extremity of the screen, go to next line.
1222 if (cur_x + fm.width(typed_char) > p->viewport()->width() - right_margin) {
1223 cur_x = right_margin;
1224 cur_y += height + 1;
1227 // preedit strings are displayed with dashed underline
1228 // and partial strings are displayed white on black indicating
1229 // that we are in selecting mode in the input method.
1230 // FIXME: rLength == preedit_length is not a changing condition
1231 // FIXME: should be put out of the loop.
1233 && pos < rStart + rLength
1234 && !(cursor_pos < rLength && rLength == preedit_length))
1235 ps = Painter::preedit_selecting;
1237 if (pos == cursor_pos
1238 && (cursor_pos < rLength && rLength == preedit_length))
1239 ps = Painter::preedit_cursor;
1241 // draw one character and update cur_x.
1242 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1247 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1249 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1250 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1252 if (d->need_resize_ || pixelRatio() != d->last_pixel_ratio_) {
1254 d->resizeBufferView();
1257 d->last_pixel_ratio_ = pixelRatio();
1259 GuiPainter pain(d->screenDevice(), pixelRatio());
1261 d->buffer_view_->draw(pain, d->caret_visible_);
1263 // The preedit text, if needed
1264 d->paintPreeditText(pain);
1267 if (d->caret_visible_)
1268 d->caret_->draw(pain);
1270 d->updateScreen(ev->rect());
1276 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1278 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1279 << " commitString: " << e->commitString());
1281 // insert the processed text in the document (handles undo)
1282 if (!e->commitString().isEmpty()) {
1283 d->buffer_view_->cursor().beginUndoGroup();
1284 d->buffer_view_->cursor().insert(qstring_to_ucs4(e->commitString()));
1285 d->buffer_view_->updateMetrics();
1286 d->buffer_view_->cursor().endUndoGroup();
1287 viewport()->update();
1290 // Hide the caret during the test transformation.
1291 if (e->preeditString().isEmpty())
1292 startBlinkingCaret();
1294 stopBlinkingCaret();
1296 if (d->preedit_string_.empty() && e->preeditString().isEmpty()) {
1302 // The preedit text and its attributes will be used in paintPreeditText
1303 d->preedit_string_ = qstring_to_ucs4(e->preeditString());
1304 d->preedit_attr_ = e->attributes();
1307 // redraw area of preedit string.
1308 int height = d->caret_->rect().height();
1309 int cur_y = d->caret_->rect().bottom();
1310 viewport()->update(0, cur_y - height, viewport()->width(),
1311 (height + 1) * d->preedit_lines_);
1313 if (d->preedit_string_.empty()) {
1314 d->preedit_lines_ = 1;
1319 // Don't forget to accept the event!
1324 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1326 QRect cur_r(0, 0, 0, 0);
1328 // this is the CJK-specific composition window position and
1329 // the context menu position when the menu key is pressed.
1330 case Qt::ImMicroFocus:
1331 cur_r = d->caret_->rect();
1332 if (d->preedit_lines_ != 1)
1334 cur_r.moveBottom(cur_r.bottom()
1335 + cur_r.height() * (d->preedit_lines_ - 1));
1336 // return lower right of caret in LyX.
1339 return QWidget::inputMethodQuery(query);
1344 void GuiWorkArea::updateWindowTitle()
1346 Buffer const & buf = bufferView().buffer();
1347 if (buf.fileName() != d->file_name_
1348 || buf.params().shell_escape != d->shell_escape_
1349 || buf.hasReadonlyFlag() != d->read_only_
1350 || buf.lyxvc().vcstatus() != d->vc_status_
1351 || buf.isClean() != d->clean_
1352 || buf.notifiesExternalModification() != d->externally_modified_) {
1353 d->file_name_ = buf.fileName();
1354 d->shell_escape_ = buf.params().shell_escape;
1355 d->read_only_ = buf.hasReadonlyFlag();
1356 d->vc_status_ = buf.lyxvc().vcstatus();
1357 d->clean_ = buf.isClean();
1358 d->externally_modified_ = buf.notifiesExternalModification();
1359 Q_EMIT titleChanged(this);
1364 bool GuiWorkArea::isFullScreen() const
1366 return d->lyx_view_ && d->lyx_view_->isFullScreen();
1370 bool GuiWorkArea::inDialogMode() const
1372 return d->dialog_mode_;
1376 void GuiWorkArea::setDialogMode(bool mode)
1378 d->dialog_mode_ = mode;
1382 GuiCompleter & GuiWorkArea::completer()
1384 return *d->completer_;
1387 GuiView const & GuiWorkArea::view() const
1389 return *d->lyx_view_;
1393 GuiView & GuiWorkArea::view()
1395 return *d->lyx_view_;
1398 ////////////////////////////////////////////////////////////////////
1402 ////////////////////////////////////////////////////////////////////
1405 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1407 support::TempFile tempfile("embedded.internal");
1408 tempfile.setAutoRemove(false);
1409 buffer_ = theBufferList().newInternalBuffer(tempfile.name().absFileName());
1410 buffer_->setUnnamed(true);
1411 buffer_->setFullyLoaded(true);
1412 setBuffer(*buffer_);
1413 setDialogMode(true);
1417 EmbeddedWorkArea::~EmbeddedWorkArea()
1419 // No need to destroy buffer and bufferview here, because it is done
1420 // in theBufferList() destruction loop at application exit
1424 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1427 GuiWorkArea::closeEvent(ev);
1431 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1434 GuiWorkArea::hideEvent(ev);
1438 QSize EmbeddedWorkArea::sizeHint () const
1441 // GuiWorkArea sets the size to the screen's viewport
1442 // by returning a value this gets overridden
1443 // EmbeddedWorkArea is now sized to fit in the layout
1444 // of the parent, and has a minimum size set in GuiWorkArea
1445 // which is what we return here
1446 return QSize(100, 70);
1450 void EmbeddedWorkArea::disable()
1452 stopBlinkingCaret();
1453 if (view().currentWorkArea() != this)
1455 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1456 // tolerates it and shows the background logo), what happens if
1457 // an EmbeddedWorkArea is closed after closing all document WAs
1458 view().setCurrentWorkArea(view().currentMainWorkArea());
1461 ////////////////////////////////////////////////////////////////////
1465 ////////////////////////////////////////////////////////////////////
1468 class NoTabFrameMacStyle : public QProxyStyle {
1471 QRect subElementRect(SubElement element, const QStyleOption * option,
1472 const QWidget * widget = 0) const
1474 QRect rect = QProxyStyle::subElementRect(element, option, widget);
1475 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1477 // The Qt Mac style puts the contents into a 3 pixel wide box
1478 // which looks very ugly and not like other Mac applications.
1479 // Hence we remove this here, and moreover the 16 pixel round
1480 // frame above if the tab bar is hidden.
1481 if (element == QStyle::SE_TabWidgetTabContents) {
1482 rect.adjust(- rect.left(), 0, rect.left(), 0);
1491 NoTabFrameMacStyle noTabFrameMacStyle;
1495 TabWorkArea::TabWorkArea(QWidget * parent)
1496 : QTabWidget(parent), clicked_tab_(-1), midpressed_tab_(-1)
1499 setStyle(&noTabFrameMacStyle);
1502 QPalette pal = palette();
1503 pal.setColor(QPalette::Active, QPalette::Button,
1504 pal.color(QPalette::Active, QPalette::Window));
1505 pal.setColor(QPalette::Disabled, QPalette::Button,
1506 pal.color(QPalette::Disabled, QPalette::Window));
1507 pal.setColor(QPalette::Inactive, QPalette::Button,
1508 pal.color(QPalette::Inactive, QPalette::Window));
1510 QObject::connect(this, SIGNAL(currentChanged(int)),
1511 this, SLOT(on_currentTabChanged(int)));
1513 closeBufferButton = new QToolButton(this);
1514 closeBufferButton->setPalette(pal);
1515 // FIXME: rename the icon to closebuffer.png
1516 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "svgz,png")));
1517 closeBufferButton->setText("Close File");
1518 closeBufferButton->setAutoRaise(true);
1519 closeBufferButton->setCursor(Qt::ArrowCursor);
1520 closeBufferButton->setToolTip(qt_("Close File"));
1521 closeBufferButton->setEnabled(true);
1522 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1523 this, SLOT(closeCurrentBuffer()));
1524 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1526 // setup drag'n'drop
1527 QTabBar* tb = new DragTabBar;
1528 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1529 this, SLOT(moveTab(int, int)));
1530 tb->setElideMode(Qt::ElideNone);
1533 // make us responsible for the context menu of the tabbar
1534 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1535 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1536 this, SLOT(showContextMenu(const QPoint &)));
1537 connect(tb, SIGNAL(tabCloseRequested(int)),
1538 this, SLOT(closeTab(int)));
1540 setUsesScrollButtons(true);
1544 void TabWorkArea::mousePressEvent(QMouseEvent *me)
1546 if (me->button() == Qt::MidButton)
1547 midpressed_tab_ = tabBar()->tabAt(me->pos());
1549 QTabWidget::mousePressEvent(me);
1553 void TabWorkArea::mouseReleaseEvent(QMouseEvent *me)
1555 if (me->button() == Qt::MidButton) {
1556 int const midreleased_tab = tabBar()->tabAt(me->pos());
1557 if (midpressed_tab_ == midreleased_tab && posIsTab(me->pos()))
1558 closeTab(midreleased_tab);
1560 QTabWidget::mouseReleaseEvent(me);
1564 void TabWorkArea::paintEvent(QPaintEvent * event)
1566 if (tabBar()->isVisible()) {
1567 QTabWidget::paintEvent(event);
1569 // Prevent the selected tab to influence the
1570 // painting of the frame of the tab widget.
1571 // This is needed for gtk style in Qt.
1572 QStylePainter p(this);
1573 #if QT_VERSION < 0x050000
1574 QStyleOptionTabWidgetFrameV2 opt;
1576 QStyleOptionTabWidgetFrame opt;
1578 initStyleOption(&opt);
1579 opt.rect = style()->subElementRect(QStyle::SE_TabWidgetTabPane,
1581 opt.selectedTabRect = QRect();
1582 p.drawPrimitive(QStyle::PE_FrameTabWidget, opt);
1587 bool TabWorkArea::posIsTab(QPoint position)
1589 // tabAt returns -1 if tab does not covers position
1590 return tabBar()->tabAt(position) > -1;
1594 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1596 if (event->button() != Qt::LeftButton)
1599 // this code chunk is unnecessary because it seems the event only makes
1600 // it this far if it is not on a tab. I'm not sure why this is (maybe
1601 // it is handled and ended in DragTabBar?), and thus I'm not sure if
1602 // this is true in all cases and if it will be true in the future so I
1603 // leave this code for now. (skostysh, 2016-07-21)
1605 // return early if double click on existing tabs
1606 if (posIsTab(event->pos()))
1609 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1613 void TabWorkArea::setFullScreen(bool full_screen)
1615 for (int i = 0; i != count(); ++i) {
1616 if (GuiWorkArea * wa = workArea(i))
1617 wa->setFullScreen(full_screen);
1620 if (lyxrc.full_screen_tabbar)
1621 showBar(!full_screen && count() > 1);
1623 showBar(count() > 1);
1627 void TabWorkArea::showBar(bool show)
1629 tabBar()->setEnabled(show);
1630 tabBar()->setVisible(show);
1631 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1632 setTabsClosable(!lyxrc.single_close_tab_button);
1636 GuiWorkAreaContainer * TabWorkArea::widget(int index) const
1638 QWidget * w = QTabWidget::widget(index);
1641 GuiWorkAreaContainer * wac = dynamic_cast<GuiWorkAreaContainer *>(w);
1647 GuiWorkAreaContainer * TabWorkArea::currentWidget() const
1649 return widget(currentIndex());
1653 GuiWorkArea * TabWorkArea::workArea(int index) const
1655 GuiWorkAreaContainer * w = widget(index);
1658 return w->workArea();
1662 GuiWorkArea * TabWorkArea::currentWorkArea() const
1664 return workArea(currentIndex());
1668 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer) const
1670 // FIXME: this method doesn't work if we have more than one work area
1671 // showing the same buffer.
1672 for (int i = 0; i != count(); ++i) {
1673 GuiWorkArea * wa = workArea(i);
1674 LASSERT(wa, return 0);
1675 if (&wa->bufferView().buffer() == &buffer)
1682 void TabWorkArea::closeAll()
1685 QWidget * wac = widget(0);
1686 LASSERT(wac, return);
1693 int TabWorkArea::indexOfWorkArea(GuiWorkArea * w) const
1695 for (int index = 0; index < count(); ++index)
1696 if (workArea(index) == w)
1702 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1704 LASSERT(work_area, return false);
1705 int index = indexOfWorkArea(work_area);
1709 if (index == currentIndex())
1710 // Make sure the work area is up to date.
1711 on_currentTabChanged(index);
1713 // Switch to the work area.
1714 setCurrentIndex(index);
1715 work_area->setFocus();
1721 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1723 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1724 GuiWorkAreaContainer * wac = new GuiWorkAreaContainer(wa);
1725 wa->setUpdatesEnabled(false);
1726 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1727 // when hiding it again below).
1728 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1729 showBar(count() > 0);
1730 addTab(wac, wa->windowTitle());
1731 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1732 this, SLOT(updateTabTexts()));
1733 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1734 setFullScreen(true);
1736 // Hide tabbar if there's only one tab.
1737 showBar(count() > 1);
1745 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1747 LASSERT(work_area, return false);
1748 int index = indexOfWorkArea(work_area);
1752 work_area->setUpdatesEnabled(false);
1753 QWidget * wac = widget(index);
1758 // make sure the next work area is enabled.
1759 currentWidget()->setUpdatesEnabled(true);
1760 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1761 setFullScreen(true);
1763 // Show tabbar only if there's more than one tab.
1764 showBar(count() > 1);
1766 lastWorkAreaRemoved();
1774 void TabWorkArea::on_currentTabChanged(int i)
1776 // returns e.g. on application destruction
1779 GuiWorkArea * wa = workArea(i);
1780 LASSERT(wa, return);
1781 wa->setUpdatesEnabled(true);
1782 wa->scheduleRedraw(true);
1785 currentWorkAreaChanged(wa);
1787 LYXERR(Debug::GUI, "currentTabChanged " << i
1788 << " File: " << wa->bufferView().buffer().absFileName());
1792 void TabWorkArea::closeCurrentBuffer()
1795 if (clicked_tab_ == -1)
1796 wa = currentWorkArea();
1798 wa = workArea(clicked_tab_);
1799 LASSERT(wa, return);
1801 wa->view().closeWorkArea(wa);
1805 void TabWorkArea::hideCurrentTab()
1808 if (clicked_tab_ == -1)
1809 wa = currentWorkArea();
1811 wa = workArea(clicked_tab_);
1812 LASSERT(wa, return);
1814 wa->view().hideWorkArea(wa);
1818 void TabWorkArea::closeTab(int index)
1820 on_currentTabChanged(index);
1823 wa = currentWorkArea();
1825 wa = workArea(index);
1826 LASSERT(wa, return);
1828 wa->view().closeWorkArea(wa);
1835 /// make vector happy
1836 DisplayPath() : tab_(-1), dottedPrefix_(false) {}
1838 DisplayPath(int tab, FileName const & filename)
1841 filename_ = (filename.extension() == "lyx") ?
1842 toqstr(filename.onlyFileNameWithoutExt())
1843 : toqstr(filename.onlyFileName());
1844 postfix_ = toqstr(filename.absoluteFilePath()).
1845 split("/", QString::SkipEmptyParts);
1846 postfix_.pop_back();
1847 abs_ = toqstr(filename.absoluteFilePath());
1848 dottedPrefix_ = false;
1851 /// Absolute path for debugging.
1856 /// Add the first segment from the postfix or three dots to the prefix.
1857 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1858 /// when really needed.
1859 void shiftPathSegment(bool dotted)
1861 if (postfix_.count() <= 0)
1865 if (dottedPrefix_ && !prefix_.isEmpty())
1866 prefix_ += ellipsisSlash_;
1867 prefix_ += postfix_.front() + "/";
1869 dottedPrefix_ = dotted && !prefix_.isEmpty();
1870 postfix_.pop_front();
1873 QString displayString() const
1875 if (prefix_.isEmpty())
1878 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1879 return prefix_ + (dots ? ellipsisSlash_ : "") + filename_;
1882 QString forecastPathString() const
1884 if (postfix_.count() == 0)
1885 return displayString();
1888 + (dottedPrefix_ ? ellipsisSlash_ : "")
1889 + postfix_.front() + "/";
1892 bool final() const { return postfix_.empty(); }
1894 int tab() const { return tab_; }
1898 static QString const ellipsisSlash_;
1902 QStringList postfix_;
1914 QString const DisplayPath::ellipsisSlash_ = QString(QChar(0x2026)) + "/";
1918 bool operator<(DisplayPath const & a, DisplayPath const & b)
1920 return a.displayString() < b.displayString();
1924 bool operator==(DisplayPath const & a, DisplayPath const & b)
1926 return a.displayString() == b.displayString();
1930 void TabWorkArea::updateTabTexts()
1935 std::list<DisplayPath> paths;
1936 typedef std::list<DisplayPath>::iterator It;
1938 // collect full names first: path into postfix, empty prefix and
1939 // filename without extension
1940 for (size_t i = 0; i < n; ++i) {
1941 GuiWorkArea * i_wa = workArea(i);
1942 FileName const fn = i_wa->bufferView().buffer().fileName();
1943 paths.push_back(DisplayPath(i, fn));
1946 // go through path segments and see if it helps to make the path more unique
1947 bool somethingChanged = true;
1948 bool allFinal = false;
1949 while (somethingChanged && !allFinal) {
1950 // adding path segments changes order
1953 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1954 somethingChanged = false;
1957 // find segments which are not unique (i.e. non-atomic)
1958 It it = paths.begin();
1960 QString segString = it->displayString();
1961 for (; it != paths.end(); ++it) {
1962 // look to the next item
1967 allFinal = allFinal && it->final();
1969 LYXERR(Debug::GUI, "it = " << it->abs()
1970 << " => " << it->displayString());
1972 // still the same segment?
1974 if ((next != paths.end()
1975 && (nextString = next->displayString()) == segString))
1977 LYXERR(Debug::GUI, "segment ended");
1979 // only a trivial one with one element?
1980 if (it == segStart) {
1981 // start new segment
1983 segString = nextString;
1987 // We found a non-atomic segment
1988 // We know that segStart <= it < next <= paths.end().
1989 // The assertion below tells coverity about it.
1990 LATTEST(segStart != paths.end());
1991 QString dspString = segStart->forecastPathString();
1992 LYXERR(Debug::GUI, "first forecast found for "
1993 << segStart->abs() << " => " << dspString);
1996 // Shift path segments and hope for the best
1997 // that it makes the path more unique.
1998 somethingChanged = true;
1999 bool moreUnique = false;
2000 for (; sit != next; ++sit) {
2001 if (sit->forecastPathString() != dspString) {
2002 LYXERR(Debug::GUI, "different forecast found for "
2003 << sit->abs() << " => " << sit->forecastPathString());
2007 LYXERR(Debug::GUI, "same forecast found for "
2008 << sit->abs() << " => " << dspString);
2011 // if the path segment helped, add it. Otherwise add dots
2012 bool dots = !moreUnique;
2013 LYXERR(Debug::GUI, "using dots = " << dots);
2014 for (sit = segStart; sit != next; ++sit) {
2015 sit->shiftPathSegment(dots);
2016 LYXERR(Debug::GUI, "shifting "
2017 << sit->abs() << " => " << sit->displayString());
2020 // start new segment
2022 segString = nextString;
2026 // set new tab titles
2027 for (It it = paths.begin(); it != paths.end(); ++it) {
2028 int const tab_index = it->tab();
2029 Buffer const & buf = workArea(tab_index)->bufferView().buffer();
2030 QString tab_text = it->displayString().replace("&", "&&");
2031 if (!buf.fileName().empty() && !buf.isClean())
2033 QString tab_tooltip = it->abs();
2034 if (buf.hasReadonlyFlag()) {
2035 setTabIcon(tab_index, QIcon(getPixmap("images/", "emblem-readonly", "svgz,png")));
2036 tab_tooltip = qt_("%1 (read only)").arg(tab_tooltip);
2038 setTabIcon(tab_index, QIcon());
2039 if (buf.notifiesExternalModification()) {
2040 QString const warn = qt_("%1 (modified externally)");
2041 tab_tooltip = warn.arg(tab_tooltip);
2042 tab_text += QChar(0x26a0);
2044 setTabText(tab_index, tab_text);
2045 setTabToolTip(tab_index, tab_tooltip);
2050 void TabWorkArea::showContextMenu(const QPoint & pos)
2053 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
2054 if (clicked_tab_ == -1)
2059 popup.addAction(QIcon(getPixmap("images/", "hidetab", "svgz,png")),
2060 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
2061 popup.addAction(QIcon(getPixmap("images/", "closetab", "svgz,png")),
2062 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
2063 popup.exec(tabBar()->mapToGlobal(pos));
2069 void TabWorkArea::moveTab(int fromIndex, int toIndex)
2071 QWidget * w = widget(fromIndex);
2072 QIcon icon = tabIcon(fromIndex);
2073 QString text = tabText(fromIndex);
2075 setCurrentIndex(fromIndex);
2076 removeTab(fromIndex);
2077 insertTab(toIndex, w, icon, text);
2078 setCurrentIndex(toIndex);
2082 DragTabBar::DragTabBar(QWidget* parent)
2085 setAcceptDrops(true);
2086 setTabsClosable(!lyxrc.single_close_tab_button);
2090 void DragTabBar::mousePressEvent(QMouseEvent * event)
2092 if (event->button() == Qt::LeftButton)
2093 dragStartPos_ = event->pos();
2094 QTabBar::mousePressEvent(event);
2098 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
2100 // If the left button isn't pressed anymore then return
2101 if (!(event->buttons() & Qt::LeftButton))
2104 // If the distance is too small then return
2105 if ((event->pos() - dragStartPos_).manhattanLength()
2106 < QApplication::startDragDistance())
2109 // did we hit something after all?
2110 int tab = tabAt(dragStartPos_);
2114 // simulate button release to remove highlight from button
2115 int i = currentIndex();
2116 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
2117 event->button(), event->buttons(), 0);
2118 QTabBar::mouseReleaseEvent(&me);
2122 QDrag * drag = new QDrag(this);
2123 QMimeData * mimeData = new QMimeData;
2124 // a crude way to distinguish tab-reodering drops from other ones
2125 mimeData->setData("action", "tab-reordering") ;
2126 drag->setMimeData(mimeData);
2128 // get tab pixmap as cursor
2129 QRect r = tabRect(tab);
2130 QPixmap pixmap(r.size());
2131 render(&pixmap, - r.topLeft());
2132 drag->setPixmap(pixmap);
2137 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
2139 // Only accept if it's an tab-reordering request
2140 QMimeData const * m = event->mimeData();
2141 QStringList formats = m->formats();
2142 if (formats.contains("action")
2143 && m->data("action") == "tab-reordering")
2144 event->acceptProposedAction();
2148 void DragTabBar::dropEvent(QDropEvent * event)
2150 int fromIndex = tabAt(dragStartPos_);
2151 int toIndex = tabAt(event->pos());
2153 // Tell interested objects that
2154 if (fromIndex != toIndex)
2155 tabMoveRequested(fromIndex, toIndex);
2156 event->acceptProposedAction();
2160 GuiWorkAreaContainer::GuiWorkAreaContainer(GuiWorkArea * wa, QWidget * parent)
2161 : QWidget(parent), wa_(wa)
2163 LASSERT(wa, return);
2164 Ui::WorkAreaUi::setupUi(this);
2165 layout()->addWidget(wa);
2166 connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
2167 this, SLOT(updateDisplay()));
2168 connect(reloadPB, SIGNAL(clicked()), this, SLOT(reload()));
2169 connect(ignorePB, SIGNAL(clicked()), this, SLOT(ignore()));
2170 setMessageColour({notificationFrame}, {reloadPB, ignorePB});
2175 void GuiWorkAreaContainer::updateDisplay()
2177 Buffer const & buf = wa_->bufferView().buffer();
2178 notificationFrame->setHidden(!buf.notifiesExternalModification());
2179 QString const label = qt_("<b>The file %1 changed on disk.</b>")
2180 .arg(toqstr(buf.fileName().displayName()));
2181 externalModificationLabel->setText(label);
2185 void GuiWorkAreaContainer::dispatch(FuncRequest f) const
2187 lyx::dispatch(FuncRequest(LFUN_BUFFER_SWITCH,
2188 wa_->bufferView().buffer().absFileName()));
2193 void GuiWorkAreaContainer::reload() const
2195 dispatch(FuncRequest(LFUN_BUFFER_RELOAD));
2199 void GuiWorkAreaContainer::ignore() const
2201 dispatch(FuncRequest(LFUN_BUFFER_EXTERNAL_MODIFICATION_CLEAR));
2205 void GuiWorkAreaContainer::mouseDoubleClickEvent(QMouseEvent * event)
2207 // prevent TabWorkArea from opening a new buffer on double click
2212 } // namespace frontend
2215 #include "moc_GuiWorkArea.cpp"