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))
273 new CompressorProxy(this); // not a leak
277 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
278 : d(new Private(this))
280 new CompressorProxy(this); // not a leak
282 buffer.params().display_pixel_ratio = theGuiApp()->pixelRatio();
288 double GuiWorkArea::pixelRatio() const
290 #if QT_VERSION >= 0x050000
291 return qt_scale_factor * devicePixelRatio();
298 void GuiWorkArea::init()
301 connect(&d->caret_timeout_, SIGNAL(timeout()),
302 this, SLOT(toggleCaret()));
304 // This connection is closed at the same time as this is destroyed.
305 d->synthetic_mouse_event_.timeout.timeout.connect([this](){
306 generateSyntheticMouseEvent();
310 // With Qt4.5 a mouse event will happen before the first paint event
311 // so make sure that the buffer view has an up to date metrics.
312 d->buffer_view_->resize(viewport()->width(), viewport()->height());
313 d->caret_ = new frontend::CaretWidget();
315 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
316 setAcceptDrops(true);
317 setMouseTracking(true);
318 setMinimumSize(100, 70);
319 setFrameStyle(QFrame::NoFrame);
322 d->updateCursorShape();
324 // we paint our own background
325 viewport()->setAttribute(Qt::WA_OpaquePaintEvent);
327 setFocusPolicy(Qt::StrongFocus);
329 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
330 << " viewport height: " << viewport()->height());
332 // Enables input methods for asian languages.
333 // Must be set when creating custom text editing widgets.
334 setAttribute(Qt::WA_InputMethodEnabled, true);
338 GuiWorkArea::~GuiWorkArea()
344 void GuiWorkArea::Private::updateCursorShape()
346 bool const clickable = buffer_view_ && buffer_view_->clickableInset();
347 p->viewport()->setCursor(clickable ? Qt::PointingHandCursor
352 void GuiWorkArea::setGuiView(GuiView & gv)
358 void GuiWorkArea::setBuffer(Buffer & buffer)
360 delete d->buffer_view_;
361 d->buffer_view_ = new BufferView(buffer);
362 buffer.workAreaManager().add(this);
364 // HACK: Prevents an additional redraw when the scrollbar pops up
365 // which regularily happens on documents with more than one page.
366 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
367 // Since we have no geometry information yet, we assume that
368 // a document needs a scrollbar if there is more then four
369 // paragraph in the outermost text.
370 if (buffer.text().paragraphs().size() > 4)
371 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
372 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
373 Q_EMIT bufferViewChanged();
377 void GuiWorkArea::fixVerticalScrollBar()
380 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
384 void GuiWorkArea::close()
386 d->lyx_view_->removeWorkArea(this);
390 void GuiWorkArea::setFullScreen(bool full_screen)
392 d->buffer_view_->setFullScreen(full_screen);
393 setFrameStyle(QFrame::NoFrame);
395 setFrameStyle(QFrame::NoFrame);
396 if (lyxrc.full_screen_scrollbar)
397 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
399 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
403 BufferView & GuiWorkArea::bufferView()
405 return *d->buffer_view_;
409 BufferView const & GuiWorkArea::bufferView() const
411 return *d->buffer_view_;
415 void GuiWorkArea::stopBlinkingCaret()
417 d->caret_timeout_.stop();
422 void GuiWorkArea::startBlinkingCaret()
424 // do not show the cursor if the view is busy
430 d->buffer_view_->caretPosAndHeight(p, h);
431 // Don't start blinking if the cursor isn't on screen.
432 if (!d->buffer_view_->cursorInView(p, h))
437 // Avoid blinking when debugging PAINTING, since it creates too much noise
438 if (!lyxerr.debugging(Debug::PAINTING)) {
439 // we are not supposed to cache this value.
440 int const time = QApplication::cursorFlashTime() / 2;
443 d->caret_timeout_.setInterval(time);
444 d->caret_timeout_.start();
449 void GuiWorkArea::toggleCaret()
451 if (d->caret_visible_)
458 void GuiWorkArea::scheduleRedraw(bool update_metrics)
461 // No need to redraw in this case.
464 // No need to do anything if this is the current view. The BufferView
465 // metrics are already up to date.
466 if (update_metrics || d->lyx_view_ != guiApp->currentView()
467 || d->lyx_view_->currentWorkArea() != this) {
468 // FIXME: it would be nice to optimize for the off-screen case.
469 d->buffer_view_->cursor().fixIfBroken();
470 d->buffer_view_->updateMetrics();
471 d->buffer_view_->cursor().fixIfBroken();
474 // update caret position, because otherwise it has to wait until
475 // the blinking interval is over
476 d->updateCaretGeometry();
478 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
479 viewport()->update();
481 /// FIXME: is this still true now that paintEvent does the actual painting?
482 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
483 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
484 d->updateScrollbar();
485 d->lyx_view_->updateStatusBar();
487 if (lyxerr.debugging(Debug::WORKAREA))
488 d->buffer_view_->coordCache().dump();
492 d->updateCursorShape();
496 // Keep in sync with GuiWorkArea::processKeySym below
497 bool GuiWorkArea::queryKeySym(KeySymbol const & key, KeyModifier mod) const
499 return guiApp->queryKeySym(key, mod);
503 // Keep in sync with GuiWorkArea::queryKeySym above
504 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
506 if (d->lyx_view_->isFullScreen() && d->lyx_view_->menuBar()->isVisible()
507 && lyxrc.full_screen_menubar) {
508 // FIXME HACK: we should not have to do this here. See related comment
509 // in GuiView::event() (QEvent::ShortcutOverride)
510 d->lyx_view_->menuBar()->hide();
513 // In order to avoid bad surprise in the middle of an operation,
514 // we better stop the blinking caret...
515 // the caret gets restarted in GuiView::restartCaret()
517 guiApp->processKeySym(key, mod);
521 void GuiWorkArea::Private::dispatch(FuncRequest const & cmd)
524 if (cmd.action() == LFUN_FILE_OPEN) {
526 lyx_view_->dispatch(cmd, dr);
530 bool const notJustMovingTheMouse =
531 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
533 // In order to avoid bad surprise in the middle of an operation, we better stop
534 // the blinking caret.
535 if (notJustMovingTheMouse)
536 p->stopBlinkingCaret();
538 buffer_view_->mouseEventDispatch(cmd);
540 // Skip these when selecting
541 // FIXME: let GuiView take care of those.
542 if (cmd.action() != LFUN_MOUSE_MOTION) {
543 completer_->updateVisibility(false, false);
544 lyx_view_->updateDialogs();
545 lyx_view_->updateStatusBar();
548 // GUI tweaks except with mouse motion with no button pressed.
549 if (notJustMovingTheMouse) {
550 // Slight hack: this is only called currently when we
551 // clicked somewhere, so we force through the display
552 // of the new status here.
553 // FIXME: let GuiView take care of those.
554 lyx_view_->clearMessage();
556 // Show the caret immediately after any operation
557 p->startBlinkingCaret();
564 void GuiWorkArea::Private::resizeBufferView()
566 // WARNING: Please don't put any code that will trigger a repaint here!
567 // We are already inside a paint event.
568 p->stopBlinkingCaret();
569 // Warn our container (GuiView).
574 buffer_view_->caretPosAndHeight(point, h);
575 bool const caret_in_view = buffer_view_->cursorInView(point, h);
576 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
578 buffer_view_->scrollToCursor();
579 updateCaretGeometry();
581 // Update scrollbars which might have changed due different
582 // BufferView dimension. This is especially important when the
583 // BufferView goes from zero-size to the real-size for the first time,
584 // as the scrollbar paramters are then set for the first time.
587 need_resize_ = false;
589 // Eventually, restart the caret after the resize event.
590 // We might be resizing even if the focus is on another widget so we only
591 // restart the caret if we have the focus.
593 QTimer::singleShot(50, p, SLOT(startBlinkingCaret()));
597 void GuiWorkArea::Private::updateCaretGeometry()
601 buffer_view_->caretPosAndHeight(point, h);
602 if (!buffer_view_->cursorInView(point, h))
606 bool l_shape = false;
607 Font const & realfont = buffer_view_->cursor().real_current_font;
608 BufferParams const & bp = buffer_view_->buffer().params();
609 bool const samelang = realfont.language() == bp.language;
610 bool const isrtl = realfont.isVisibleRightToLeft();
612 if (!samelang || isrtl != bp.language->rightToLeft())
615 // The ERT language hack needs fixing up
616 if (realfont.language() == latex_language)
619 // show caret on screen
620 Cursor & cur = buffer_view_->cursor();
621 bool completable = cur.inset().showCompletionCursor()
622 && completer_->completionAvailable()
623 && !completer_->popupVisible()
624 && !completer_->inlineVisible();
625 caret_visible_ = true;
627 //int cur_x = buffer_view_->getPos(cur).x_;
628 // We may have decided to slide the cursor row so that caret
630 point.x_ -= buffer_view_->horizScrollOffset();
632 caret_->update(point.x_, point.y_, h, l_shape, isrtl, completable);
636 void GuiWorkArea::Private::showCaret()
641 updateCaretGeometry();
642 p->viewport()->update(caret_->rect());
646 void GuiWorkArea::Private::hideCaret()
651 caret_visible_ = false;
652 //if (!qApp->focusWidget())
653 p->viewport()->update(caret_->rect());
657 void GuiWorkArea::Private::updateScrollbar()
659 // Prevent setRange() and setSliderPosition from causing recursive calls via
660 // the signal valueChanged. (#10311)
661 QObject::disconnect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
662 p, SLOT(scrollTo(int)));
663 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
664 p->verticalScrollBar()->setRange(scroll_.min, scroll_.max);
665 p->verticalScrollBar()->setPageStep(scroll_.page_step);
666 p->verticalScrollBar()->setSingleStep(scroll_.single_step);
667 p->verticalScrollBar()->setSliderPosition(0);
668 // Connect to the vertical scroll bar
669 QObject::connect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
670 p, SLOT(scrollTo(int)));
674 void GuiWorkArea::scrollTo(int value)
677 d->buffer_view_->scrollDocView(value, true);
679 if (lyxrc.cursor_follows_scrollbar) {
680 d->buffer_view_->setCursorFromScrollbar();
681 // FIXME: let GuiView take care of those.
682 d->lyx_view_->updateLayoutList();
684 // Show the caret immediately after any operation.
685 startBlinkingCaret();
688 QApplication::syncX();
693 bool GuiWorkArea::event(QEvent * e)
696 case QEvent::ToolTip: {
697 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
698 if (lyxrc.use_tooltip) {
699 QPoint pos = helpEvent->pos();
700 if (pos.x() < viewport()->width()) {
701 QString s = toqstr(d->buffer_view_->toolTip(pos.x(), pos.y()));
702 QToolTip::showText(helpEvent->globalPos(), formatToolTip(s,35));
705 QToolTip::hideText();
707 // Don't forget to accept the event!
712 case QEvent::ShortcutOverride:
713 // keyPressEvent is ShortcutOverride-aware and only accepts the event in
715 keyPressEvent(static_cast<QKeyEvent *>(e));
716 return e->isAccepted();
718 case QEvent::KeyPress: {
719 // We catch this event in order to catch the Tab or Shift+Tab key press
720 // which are otherwise reserved to focus switching between controls
722 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
723 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
724 || (ke->key() == Qt::Key_Backtab && (
725 ke->modifiers() == Qt::ShiftModifier
726 || ke->modifiers() == Qt::NoModifier))) {
730 return QAbstractScrollArea::event(e);
734 return QAbstractScrollArea::event(e);
740 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
743 if (e->reason() == QContextMenuEvent::Mouse)
744 // the menu name is set on mouse press
745 name = d->context_menu_name_;
747 QPoint pos = e->pos();
748 Cursor const & cur = d->buffer_view_->cursor();
749 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
750 // Do not access the context menu of math right in front of before
751 // the cursor. This does not work when the cursor is in text.
752 Inset * inset = cur.paragraph().getInset(cur.pos());
753 if (inset && inset->asInsetMath())
755 else if (cur.pos() > 0) {
756 inset = cur.paragraph().getInset(cur.pos() - 1);
761 name = d->buffer_view_->contextMenu(pos.x(), pos.y());
768 // always show mnemonics when the keyboard is used to show the context menu
769 // FIXME: This should be fixed in Qt itself
770 bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
771 QMenu * menu = guiApp->menus().menu(toqstr(name), *d->lyx_view_, keyboard);
776 // Position the menu to the right.
777 // FIXME: menu position should be different for RTL text.
778 menu->exec(e->globalPos());
783 void GuiWorkArea::focusInEvent(QFocusEvent * e)
785 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
786 if (d->lyx_view_->currentWorkArea() != this) {
787 d->lyx_view_->setCurrentWorkArea(this);
788 d->lyx_view_->currentWorkArea()->bufferView().buffer().updateBuffer();
791 startBlinkingCaret();
792 QAbstractScrollArea::focusInEvent(e);
796 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
798 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
800 QAbstractScrollArea::focusOutEvent(e);
804 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
806 if (d->dc_event_.active && d->dc_event_ == *e) {
807 d->dc_event_.active = false;
808 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
809 q_button_state(e->button()), q_key_state(e->modifiers()));
815 #if (QT_VERSION < 0x050000) && !defined(__HAIKU__)
816 inputContext()->reset();
819 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
820 q_button_state(e->button()), q_key_state(e->modifiers()));
823 // Save the context menu on mouse press, because also the mouse
824 // cursor is set on mouse press. Afterwards, we can either release
825 // the mousebutton somewhere else, or the cursor might have moved
826 // due to the DEPM. We need to do this after the mouse has been
827 // set in dispatch(), because the selection state might change.
828 if (e->button() == Qt::RightButton)
829 d->context_menu_name_ = d->buffer_view_->contextMenu(e->x(), e->y());
835 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
837 if (d->synthetic_mouse_event_.timeout.running())
838 d->synthetic_mouse_event_.timeout.stop();
840 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
841 q_button_state(e->button()), q_key_state(e->modifiers()));
847 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
849 // we kill the triple click if we move
850 doubleClickTimeout();
851 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
852 q_motion_state(e->buttons()), q_key_state(e->modifiers()));
856 // If we're above or below the work area...
857 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
858 && e->buttons() == mouse_button::button1) {
859 // Make sure only a synthetic event can cause a page scroll,
860 // so they come at a steady rate:
862 // _Force_ a scroll up:
863 cmd.set_y(e->y() - 21);
865 cmd.set_y(e->y() + 21);
866 // Store the event, to be handled when the timeout expires.
867 d->synthetic_mouse_event_.cmd = cmd;
869 if (d->synthetic_mouse_event_.timeout.running()) {
870 // Discard the event. Note that it _may_ be handled
871 // when the timeout expires if
872 // synthetic_mouse_event_.cmd has not been overwritten.
873 // Ie, when the timeout expires, we handle the
874 // most recent event but discard all others that
875 // occurred after the one used to start the timeout
876 // in the first place.
880 d->synthetic_mouse_event_.restart_timeout = true;
881 d->synthetic_mouse_event_.timeout.start();
882 // Fall through to handle this event...
884 } else if (d->synthetic_mouse_event_.timeout.running()) {
885 // Store the event, to be possibly handled when the timeout
887 // Once the timeout has expired, normal control is returned
888 // to mouseMoveEvent (restart_timeout = false).
889 // This results in a much smoother 'feel' when moving the
890 // mouse back into the work area.
891 d->synthetic_mouse_event_.cmd = cmd;
892 d->synthetic_mouse_event_.restart_timeout = false;
899 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
901 // Wheel rotation by one notch results in a delta() of 120 (see
902 // documentation of QWheelEvent)
903 double const delta = ev->delta() / 120.0;
905 switch (lyxrc.scroll_wheel_zoom) {
906 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
907 zoom = ev->modifiers() & Qt::ControlModifier;
908 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
910 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
911 zoom = ev->modifiers() & Qt::ShiftModifier;
912 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
914 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
915 zoom = ev->modifiers() & Qt::AltModifier;
916 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
918 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
922 docstring arg = convert<docstring>(int(5 * delta));
923 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
927 // Take into account the desktop wide settings.
928 int const lines = qApp->wheelScrollLines();
929 int const page_step = verticalScrollBar()->pageStep();
930 // Test if the wheel mouse is set to one screen at a time.
931 // This is according to
932 // https://doc.qt.io/qt-5/qapplication.html#wheelScrollLines-prop
934 min(lines * verticalScrollBar()->singleStep(), page_step);
936 // Take into account the rotation and the user preferences.
937 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
938 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
939 << " delta = " << delta << " scroll_value = " << scroll_value
940 << " page_step = " << page_step);
942 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
948 void GuiWorkArea::generateSyntheticMouseEvent()
950 int const e_y = d->synthetic_mouse_event_.cmd.y();
951 int const wh = d->buffer_view_->workHeight();
952 bool const up = e_y < 0;
953 bool const down = e_y > wh;
955 // Set things off to generate the _next_ 'pseudo' event.
957 if (d->synthetic_mouse_event_.restart_timeout) {
958 // This is some magic formulae to determine the speed
959 // of scrolling related to the position of the mouse.
962 int dist = up ? -e_y : e_y - wh;
963 time = max(min(200, 250000 / (dist * dist)), 1) ;
966 step = 80000 / (time * time);
970 d->synthetic_mouse_event_.timeout.setTimeout(time);
971 d->synthetic_mouse_event_.timeout.start();
974 // Can we scroll further ?
975 int const value = verticalScrollBar()->value();
976 if (value == verticalScrollBar()->maximum()
977 || value == verticalScrollBar()->minimum()) {
978 d->synthetic_mouse_event_.timeout.stop();
983 if (step <= 2 * wh) {
984 d->buffer_view_->scroll(up ? -step : step);
985 d->buffer_view_->updateMetrics();
987 d->buffer_view_->scrollDocView(value + (up ? -step : step), false);
990 // In which paragraph do we have to set the cursor ?
991 Cursor & cur = d->buffer_view_->cursor();
992 // FIXME: we don't know how to handle math.
993 Text * text = cur.text();
996 TextMetrics const & tm = d->buffer_view_->textMetrics(text);
998 // Quit gracefully if there are no metrics, since otherwise next
999 // line would crash (bug #10324).
1000 // This situation seems related to a (not yet understood) timing problem.
1004 pair<pit_type, const ParagraphMetrics *> pp = up ? tm.first() : tm.last();
1005 ParagraphMetrics const & pm = *pp.second;
1006 pit_type const pit = pp.first;
1008 if (pm.rows().empty())
1011 // Find the row at which we set the cursor.
1012 RowList::const_iterator rit = pm.rows().begin();
1013 RowList::const_iterator rlast = pm.rows().end();
1014 int yy = pm.position() - pm.ascent();
1015 for (--rlast; rit != rlast; ++rit) {
1016 int h = rit->height();
1017 if ((up && yy + h > 0)
1018 || (!up && yy + h > wh - defaultRowHeight()))
1023 // Find the position of the cursor
1025 int x = d->synthetic_mouse_event_.cmd.x();
1026 pos_type const pos = tm.getPosNearX(*rit, x, bound);
1031 cur.boundary(bound);
1033 d->buffer_view_->buffer().changed(false);
1038 // CompressorProxy adapted from Kuba Ober https://stackoverflow.com/a/21006207
1039 CompressorProxy::CompressorProxy(GuiWorkArea * wa) : QObject(wa), flag_(false)
1041 qRegisterMetaType<KeySymbol>("KeySymbol");
1042 qRegisterMetaType<KeyModifier>("KeyModifier");
1043 connect(wa, SIGNAL(compressKeySym(KeySymbol, KeyModifier, bool)),
1044 this, SLOT(slot(KeySymbol, KeyModifier, bool)),
1045 Qt::QueuedConnection);
1046 connect(this, SIGNAL(signal(KeySymbol, KeyModifier)),
1047 wa, SLOT(processKeySym(KeySymbol, KeyModifier)));
1051 bool CompressorProxy::emitCheck(bool isAutoRepeat)
1055 QCoreApplication::sendPostedEvents(this, QEvent::MetaCall); // recurse
1056 bool result = flag_;
1062 void CompressorProxy::slot(KeySymbol sym, KeyModifier mod, bool isAutoRepeat)
1064 if (emitCheck(isAutoRepeat))
1065 Q_EMIT signal(sym, mod);
1067 LYXERR(Debug::KEY, "system is busy: autoRepeat key event ignored");
1071 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
1073 // this is also called for ShortcutOverride events. In this case, one must
1074 // not act but simply accept the event explicitly.
1075 bool const act = (ev->type() != QEvent::ShortcutOverride);
1077 // Do not process here some keys if dialog_mode_ is set
1078 bool const for_dialog_mode = d->dialog_mode_
1079 && (ev->modifiers() == Qt::NoModifier
1080 || ev->modifiers() == Qt::ShiftModifier)
1081 && (ev->key() == Qt::Key_Escape
1082 || ev->key() == Qt::Key_Enter
1083 || ev->key() == Qt::Key_Return);
1084 // also do not use autoRepeat to input shortcuts
1085 bool const autoRepeat = ev->isAutoRepeat();
1087 if (for_dialog_mode || (!act && autoRepeat)) {
1092 // intercept some keys if completion popup is visible
1093 if (d->completer_->popupVisible()) {
1094 switch (ev->key()) {
1096 case Qt::Key_Return:
1098 d->completer_->activate();
1104 KeyModifier const m = q_key_state(ev->modifiers());
1106 if (act && lyxerr.debugging(Debug::KEY)) {
1108 if (m & ShiftModifier)
1110 if (m & ControlModifier)
1112 if (m & AltModifier)
1114 if (m & MetaModifier)
1116 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1117 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
1118 << " keyState: " << str);
1122 setKeySymbol(&sym, ev);
1125 Q_EMIT compressKeySym(sym, m, autoRepeat);
1128 // here, !autoRepeat, as determined at the beginning
1129 ev->setAccepted(queryKeySym(sym, m));
1136 void GuiWorkArea::doubleClickTimeout()
1138 d->dc_event_.active = false;
1142 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1144 d->dc_event_ = DoubleClick(ev);
1145 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1146 SLOT(doubleClickTimeout()));
1147 FuncRequest cmd(LFUN_MOUSE_DOUBLE, ev->x(), ev->y(),
1148 q_button_state(ev->button()), q_key_state(ev->modifiers()));
1154 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1156 QAbstractScrollArea::resizeEvent(ev);
1157 d->need_resize_ = true;
1162 void GuiWorkArea::Private::paintPreeditText(GuiPainter & pain)
1164 if (preedit_string_.empty())
1167 // FIXME: shall we use real_current_font here? (see #10478)
1168 FontInfo const font = buffer_view_->cursor().getFont().fontInfo();
1169 FontMetrics const & fm = theFontMetrics(font);
1170 int const height = fm.maxHeight();
1171 int cur_x = caret_->rect().left();
1172 int cur_y = caret_->rect().bottom();
1174 // get attributes of input method cursor.
1175 // cursor_pos : cursor position in preedit string.
1176 size_t cursor_pos = 0;
1177 bool cursor_is_visible = false;
1178 for (auto const & attr : preedit_attr_) {
1179 if (attr.type == QInputMethodEvent::Cursor) {
1180 cursor_pos = attr.start;
1181 cursor_is_visible = attr.length != 0;
1186 size_t const preedit_length = preedit_string_.length();
1188 // get position of selection in input method.
1189 // FIXME: isn't there a way to do this simplier?
1190 // rStart : cursor position in selected string in IM.
1192 // rLength : selected string length in IM.
1194 if (cursor_pos < preedit_length) {
1195 for (auto const & attr : preedit_attr_) {
1196 if (attr.type == QInputMethodEvent::TextFormat) {
1197 if (attr.start <= int(cursor_pos)
1198 && int(cursor_pos) < attr.start + attr.length) {
1199 rStart = attr.start;
1200 rLength = attr.length;
1201 if (!cursor_is_visible)
1202 cursor_pos += rLength;
1209 rStart = cursor_pos;
1213 int const right_margin = buffer_view_->rightMargin();
1214 Painter::preedit_style ps;
1215 // Most often there would be only one line:
1217 for (size_t pos = 0; pos != preedit_length; ++pos) {
1218 char_type const typed_char = preedit_string_[pos];
1219 // reset preedit string style
1220 ps = Painter::preedit_default;
1222 // if we reached the right extremity of the screen, go to next line.
1223 if (cur_x + fm.width(typed_char) > p->viewport()->width() - right_margin) {
1224 cur_x = right_margin;
1225 cur_y += height + 1;
1228 // preedit strings are displayed with dashed underline
1229 // and partial strings are displayed white on black indicating
1230 // that we are in selecting mode in the input method.
1231 // FIXME: rLength == preedit_length is not a changing condition
1232 // FIXME: should be put out of the loop.
1234 && pos < rStart + rLength
1235 && !(cursor_pos < rLength && rLength == preedit_length))
1236 ps = Painter::preedit_selecting;
1238 if (pos == cursor_pos
1239 && (cursor_pos < rLength && rLength == preedit_length))
1240 ps = Painter::preedit_cursor;
1242 // draw one character and update cur_x.
1243 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1248 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1250 // Hopefully fixes bug #10989.
1254 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1255 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1257 if (d->need_resize_ || pixelRatio() != d->last_pixel_ratio_) {
1259 d->resizeBufferView();
1262 d->last_pixel_ratio_ = pixelRatio();
1264 GuiPainter pain(d->screenDevice(), pixelRatio());
1266 d->buffer_view_->draw(pain, d->caret_visible_);
1268 // The preedit text, if needed
1269 d->paintPreeditText(pain);
1272 if (d->caret_visible_)
1273 d->caret_->draw(pain);
1275 d->updateScreen(ev->rect());
1281 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1283 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1284 << " commitString: " << e->commitString());
1286 // insert the processed text in the document (handles undo)
1287 if (!e->commitString().isEmpty()) {
1288 d->buffer_view_->cursor().beginUndoGroup();
1289 d->buffer_view_->cursor().insert(qstring_to_ucs4(e->commitString()));
1290 d->buffer_view_->updateMetrics();
1291 d->buffer_view_->cursor().endUndoGroup();
1292 d->updateCaretGeometry();
1293 viewport()->update();
1296 // Hide the caret during the test transformation.
1297 if (e->preeditString().isEmpty())
1298 startBlinkingCaret();
1300 stopBlinkingCaret();
1302 if (d->preedit_string_.empty() && e->preeditString().isEmpty()) {
1308 // The preedit text and its attributes will be used in paintPreeditText
1309 d->preedit_string_ = qstring_to_ucs4(e->preeditString());
1310 d->preedit_attr_ = e->attributes();
1313 // redraw area of preedit string.
1314 int height = d->caret_->rect().height();
1315 int cur_y = d->caret_->rect().bottom();
1316 viewport()->update(0, cur_y - height, viewport()->width(),
1317 (height + 1) * d->preedit_lines_);
1319 if (d->preedit_string_.empty()) {
1320 d->preedit_lines_ = 1;
1325 // Don't forget to accept the event!
1330 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1332 QRect cur_r(0, 0, 0, 0);
1334 // this is the CJK-specific composition window position and
1335 // the context menu position when the menu key is pressed.
1336 case Qt::ImMicroFocus:
1337 cur_r = d->caret_->rect();
1338 if (d->preedit_lines_ != 1)
1340 cur_r.moveBottom(cur_r.bottom()
1341 + cur_r.height() * (d->preedit_lines_ - 1));
1342 // return lower right of caret in LyX.
1345 return QWidget::inputMethodQuery(query);
1350 void GuiWorkArea::updateWindowTitle()
1352 Buffer const & buf = bufferView().buffer();
1353 if (buf.fileName() != d->file_name_
1354 || buf.params().shell_escape != d->shell_escape_
1355 || buf.hasReadonlyFlag() != d->read_only_
1356 || buf.lyxvc().vcstatus() != d->vc_status_
1357 || buf.isClean() != d->clean_
1358 || buf.notifiesExternalModification() != d->externally_modified_) {
1359 d->file_name_ = buf.fileName();
1360 d->shell_escape_ = buf.params().shell_escape;
1361 d->read_only_ = buf.hasReadonlyFlag();
1362 d->vc_status_ = buf.lyxvc().vcstatus();
1363 d->clean_ = buf.isClean();
1364 d->externally_modified_ = buf.notifiesExternalModification();
1365 Q_EMIT titleChanged(this);
1370 bool GuiWorkArea::isFullScreen() const
1372 return d->lyx_view_ && d->lyx_view_->isFullScreen();
1376 bool GuiWorkArea::inDialogMode() const
1378 return d->dialog_mode_;
1382 void GuiWorkArea::setDialogMode(bool mode)
1384 d->dialog_mode_ = mode;
1388 GuiCompleter & GuiWorkArea::completer()
1390 return *d->completer_;
1393 GuiView const & GuiWorkArea::view() const
1395 return *d->lyx_view_;
1399 GuiView & GuiWorkArea::view()
1401 return *d->lyx_view_;
1404 ////////////////////////////////////////////////////////////////////
1408 ////////////////////////////////////////////////////////////////////
1411 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1413 support::TempFile tempfile("embedded.internal");
1414 tempfile.setAutoRemove(false);
1415 buffer_ = theBufferList().newInternalBuffer(tempfile.name().absFileName());
1416 buffer_->setUnnamed(true);
1417 buffer_->setFullyLoaded(true);
1418 setBuffer(*buffer_);
1419 setDialogMode(true);
1423 EmbeddedWorkArea::~EmbeddedWorkArea()
1425 // No need to destroy buffer and bufferview here, because it is done
1426 // in theBufferList() destruction loop at application exit
1430 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1433 GuiWorkArea::closeEvent(ev);
1437 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1440 GuiWorkArea::hideEvent(ev);
1444 QSize EmbeddedWorkArea::sizeHint () const
1447 // GuiWorkArea sets the size to the screen's viewport
1448 // by returning a value this gets overridden
1449 // EmbeddedWorkArea is now sized to fit in the layout
1450 // of the parent, and has a minimum size set in GuiWorkArea
1451 // which is what we return here
1452 return QSize(100, 70);
1456 void EmbeddedWorkArea::disable()
1458 stopBlinkingCaret();
1459 if (view().currentWorkArea() != this)
1461 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1462 // tolerates it and shows the background logo), what happens if
1463 // an EmbeddedWorkArea is closed after closing all document WAs
1464 view().setCurrentWorkArea(view().currentMainWorkArea());
1467 ////////////////////////////////////////////////////////////////////
1471 ////////////////////////////////////////////////////////////////////
1474 class NoTabFrameMacStyle : public QProxyStyle {
1477 QRect subElementRect(SubElement element, const QStyleOption * option,
1478 const QWidget * widget = 0) const
1480 QRect rect = QProxyStyle::subElementRect(element, option, widget);
1481 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1483 // The Qt Mac style puts the contents into a 3 pixel wide box
1484 // which looks very ugly and not like other Mac applications.
1485 // Hence we remove this here, and moreover the 16 pixel round
1486 // frame above if the tab bar is hidden.
1487 if (element == QStyle::SE_TabWidgetTabContents) {
1488 rect.adjust(- rect.left(), 0, rect.left(), 0);
1497 NoTabFrameMacStyle noTabFrameMacStyle;
1501 TabWorkArea::TabWorkArea(QWidget * parent)
1502 : QTabWidget(parent), clicked_tab_(-1), midpressed_tab_(-1)
1505 setStyle(&noTabFrameMacStyle);
1508 QPalette pal = palette();
1509 pal.setColor(QPalette::Active, QPalette::Button,
1510 pal.color(QPalette::Active, QPalette::Window));
1511 pal.setColor(QPalette::Disabled, QPalette::Button,
1512 pal.color(QPalette::Disabled, QPalette::Window));
1513 pal.setColor(QPalette::Inactive, QPalette::Button,
1514 pal.color(QPalette::Inactive, QPalette::Window));
1516 QObject::connect(this, SIGNAL(currentChanged(int)),
1517 this, SLOT(on_currentTabChanged(int)));
1519 closeBufferButton = new QToolButton(this);
1520 closeBufferButton->setPalette(pal);
1521 // FIXME: rename the icon to closebuffer.png
1522 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "svgz,png")));
1523 closeBufferButton->setText("Close File");
1524 closeBufferButton->setAutoRaise(true);
1525 closeBufferButton->setCursor(Qt::ArrowCursor);
1526 closeBufferButton->setToolTip(qt_("Close File"));
1527 closeBufferButton->setEnabled(true);
1528 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1529 this, SLOT(closeCurrentBuffer()));
1530 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1532 // setup drag'n'drop
1533 QTabBar* tb = new DragTabBar;
1534 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1535 this, SLOT(moveTab(int, int)));
1536 tb->setElideMode(Qt::ElideNone);
1539 // make us responsible for the context menu of the tabbar
1540 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1541 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1542 this, SLOT(showContextMenu(const QPoint &)));
1543 connect(tb, SIGNAL(tabCloseRequested(int)),
1544 this, SLOT(closeTab(int)));
1546 setUsesScrollButtons(true);
1550 void TabWorkArea::mousePressEvent(QMouseEvent *me)
1552 if (me->button() == Qt::MidButton)
1553 midpressed_tab_ = tabBar()->tabAt(me->pos());
1555 QTabWidget::mousePressEvent(me);
1559 void TabWorkArea::mouseReleaseEvent(QMouseEvent *me)
1561 if (me->button() == Qt::MidButton) {
1562 int const midreleased_tab = tabBar()->tabAt(me->pos());
1563 if (midpressed_tab_ == midreleased_tab && posIsTab(me->pos()))
1564 closeTab(midreleased_tab);
1566 QTabWidget::mouseReleaseEvent(me);
1570 void TabWorkArea::paintEvent(QPaintEvent * event)
1572 if (tabBar()->isVisible()) {
1573 QTabWidget::paintEvent(event);
1575 // Prevent the selected tab to influence the
1576 // painting of the frame of the tab widget.
1577 // This is needed for gtk style in Qt.
1578 QStylePainter p(this);
1579 #if QT_VERSION < 0x050000
1580 QStyleOptionTabWidgetFrameV2 opt;
1582 QStyleOptionTabWidgetFrame opt;
1584 initStyleOption(&opt);
1585 opt.rect = style()->subElementRect(QStyle::SE_TabWidgetTabPane,
1587 opt.selectedTabRect = QRect();
1588 p.drawPrimitive(QStyle::PE_FrameTabWidget, opt);
1593 bool TabWorkArea::posIsTab(QPoint position)
1595 // tabAt returns -1 if tab does not covers position
1596 return tabBar()->tabAt(position) > -1;
1600 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1602 if (event->button() != Qt::LeftButton)
1605 // this code chunk is unnecessary because it seems the event only makes
1606 // it this far if it is not on a tab. I'm not sure why this is (maybe
1607 // it is handled and ended in DragTabBar?), and thus I'm not sure if
1608 // this is true in all cases and if it will be true in the future so I
1609 // leave this code for now. (skostysh, 2016-07-21)
1611 // return early if double click on existing tabs
1612 if (posIsTab(event->pos()))
1615 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1619 void TabWorkArea::setFullScreen(bool full_screen)
1621 for (int i = 0; i != count(); ++i) {
1622 if (GuiWorkArea * wa = workArea(i))
1623 wa->setFullScreen(full_screen);
1626 if (lyxrc.full_screen_tabbar)
1627 showBar(!full_screen && count() > 1);
1629 showBar(count() > 1);
1633 void TabWorkArea::showBar(bool show)
1635 tabBar()->setEnabled(show);
1636 tabBar()->setVisible(show);
1637 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1638 setTabsClosable(!lyxrc.single_close_tab_button);
1642 GuiWorkAreaContainer * TabWorkArea::widget(int index) const
1644 QWidget * w = QTabWidget::widget(index);
1647 GuiWorkAreaContainer * wac = dynamic_cast<GuiWorkAreaContainer *>(w);
1653 GuiWorkAreaContainer * TabWorkArea::currentWidget() const
1655 return widget(currentIndex());
1659 GuiWorkArea * TabWorkArea::workArea(int index) const
1661 GuiWorkAreaContainer * w = widget(index);
1664 return w->workArea();
1668 GuiWorkArea * TabWorkArea::currentWorkArea() const
1670 return workArea(currentIndex());
1674 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer) const
1676 // FIXME: this method doesn't work if we have more than one work area
1677 // showing the same buffer.
1678 for (int i = 0; i != count(); ++i) {
1679 GuiWorkArea * wa = workArea(i);
1680 LASSERT(wa, return 0);
1681 if (&wa->bufferView().buffer() == &buffer)
1688 void TabWorkArea::closeAll()
1691 QWidget * wac = widget(0);
1692 LASSERT(wac, return);
1699 int TabWorkArea::indexOfWorkArea(GuiWorkArea * w) const
1701 for (int index = 0; index < count(); ++index)
1702 if (workArea(index) == w)
1708 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1710 LASSERT(work_area, return false);
1711 int index = indexOfWorkArea(work_area);
1715 if (index == currentIndex())
1716 // Make sure the work area is up to date.
1717 on_currentTabChanged(index);
1719 // Switch to the work area.
1720 setCurrentIndex(index);
1721 work_area->setFocus();
1727 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1729 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1730 GuiWorkAreaContainer * wac = new GuiWorkAreaContainer(wa);
1731 wa->setUpdatesEnabled(false);
1732 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1733 // when hiding it again below).
1734 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1735 showBar(count() > 0);
1736 addTab(wac, wa->windowTitle());
1737 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1738 this, SLOT(updateTabTexts()));
1739 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1740 setFullScreen(true);
1742 // Hide tabbar if there's only one tab.
1743 showBar(count() > 1);
1751 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1753 LASSERT(work_area, return false);
1754 int index = indexOfWorkArea(work_area);
1758 work_area->setUpdatesEnabled(false);
1759 QWidget * wac = widget(index);
1764 // make sure the next work area is enabled.
1765 currentWidget()->setUpdatesEnabled(true);
1766 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1767 setFullScreen(true);
1769 // Show tabbar only if there's more than one tab.
1770 showBar(count() > 1);
1772 lastWorkAreaRemoved();
1780 void TabWorkArea::on_currentTabChanged(int i)
1782 // returns e.g. on application destruction
1785 GuiWorkArea * wa = workArea(i);
1786 LASSERT(wa, return);
1787 wa->setUpdatesEnabled(true);
1788 wa->scheduleRedraw(true);
1791 currentWorkAreaChanged(wa);
1793 LYXERR(Debug::GUI, "currentTabChanged " << i
1794 << " File: " << wa->bufferView().buffer().absFileName());
1798 void TabWorkArea::closeCurrentBuffer()
1801 if (clicked_tab_ == -1)
1802 wa = currentWorkArea();
1804 wa = workArea(clicked_tab_);
1805 LASSERT(wa, return);
1807 wa->view().closeWorkArea(wa);
1811 void TabWorkArea::hideCurrentTab()
1814 if (clicked_tab_ == -1)
1815 wa = currentWorkArea();
1817 wa = workArea(clicked_tab_);
1818 LASSERT(wa, return);
1820 wa->view().hideWorkArea(wa);
1824 void TabWorkArea::closeTab(int index)
1826 on_currentTabChanged(index);
1829 wa = currentWorkArea();
1831 wa = workArea(index);
1832 LASSERT(wa, return);
1834 wa->view().closeWorkArea(wa);
1841 /// make vector happy
1842 DisplayPath() : tab_(-1), dottedPrefix_(false) {}
1844 DisplayPath(int tab, FileName const & filename)
1847 filename_ = (filename.extension() == "lyx") ?
1848 toqstr(filename.onlyFileNameWithoutExt())
1849 : toqstr(filename.onlyFileName());
1850 postfix_ = toqstr(filename.absoluteFilePath()).
1851 split("/", QString::SkipEmptyParts);
1852 postfix_.pop_back();
1853 abs_ = toqstr(filename.absoluteFilePath());
1854 dottedPrefix_ = false;
1857 /// Absolute path for debugging.
1862 /// Add the first segment from the postfix or three dots to the prefix.
1863 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1864 /// when really needed.
1865 void shiftPathSegment(bool dotted)
1867 if (postfix_.count() <= 0)
1871 if (dottedPrefix_ && !prefix_.isEmpty())
1872 prefix_ += ellipsisSlash_;
1873 prefix_ += postfix_.front() + "/";
1875 dottedPrefix_ = dotted && !prefix_.isEmpty();
1876 postfix_.pop_front();
1879 QString displayString() const
1881 if (prefix_.isEmpty())
1884 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1885 return prefix_ + (dots ? ellipsisSlash_ : "") + filename_;
1888 QString forecastPathString() const
1890 if (postfix_.count() == 0)
1891 return displayString();
1894 + (dottedPrefix_ ? ellipsisSlash_ : "")
1895 + postfix_.front() + "/";
1898 bool final() const { return postfix_.empty(); }
1900 int tab() const { return tab_; }
1904 static QString const ellipsisSlash_;
1908 QStringList postfix_;
1920 QString const DisplayPath::ellipsisSlash_ = QString(QChar(0x2026)) + "/";
1924 bool operator<(DisplayPath const & a, DisplayPath const & b)
1926 return a.displayString() < b.displayString();
1930 bool operator==(DisplayPath const & a, DisplayPath const & b)
1932 return a.displayString() == b.displayString();
1936 void TabWorkArea::updateTabTexts()
1941 std::list<DisplayPath> paths;
1942 typedef std::list<DisplayPath>::iterator It;
1944 // collect full names first: path into postfix, empty prefix and
1945 // filename without extension
1946 for (size_t i = 0; i < n; ++i) {
1947 GuiWorkArea * i_wa = workArea(i);
1948 FileName const fn = i_wa->bufferView().buffer().fileName();
1949 paths.push_back(DisplayPath(i, fn));
1952 // go through path segments and see if it helps to make the path more unique
1953 bool somethingChanged = true;
1954 bool allFinal = false;
1955 while (somethingChanged && !allFinal) {
1956 // adding path segments changes order
1959 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1960 somethingChanged = false;
1963 // find segments which are not unique (i.e. non-atomic)
1964 It it = paths.begin();
1966 QString segString = it->displayString();
1967 for (; it != paths.end(); ++it) {
1968 // look to the next item
1973 allFinal = allFinal && it->final();
1975 LYXERR(Debug::GUI, "it = " << it->abs()
1976 << " => " << it->displayString());
1978 // still the same segment?
1980 if ((next != paths.end()
1981 && (nextString = next->displayString()) == segString))
1983 LYXERR(Debug::GUI, "segment ended");
1985 // only a trivial one with one element?
1986 if (it == segStart) {
1987 // start new segment
1989 segString = nextString;
1993 // We found a non-atomic segment
1994 // We know that segStart <= it < next <= paths.end().
1995 // The assertion below tells coverity about it.
1996 LATTEST(segStart != paths.end());
1997 QString dspString = segStart->forecastPathString();
1998 LYXERR(Debug::GUI, "first forecast found for "
1999 << segStart->abs() << " => " << dspString);
2002 // Shift path segments and hope for the best
2003 // that it makes the path more unique.
2004 somethingChanged = true;
2005 bool moreUnique = false;
2006 for (; sit != next; ++sit) {
2007 if (sit->forecastPathString() != dspString) {
2008 LYXERR(Debug::GUI, "different forecast found for "
2009 << sit->abs() << " => " << sit->forecastPathString());
2013 LYXERR(Debug::GUI, "same forecast found for "
2014 << sit->abs() << " => " << dspString);
2017 // if the path segment helped, add it. Otherwise add dots
2018 bool dots = !moreUnique;
2019 LYXERR(Debug::GUI, "using dots = " << dots);
2020 for (sit = segStart; sit != next; ++sit) {
2021 sit->shiftPathSegment(dots);
2022 LYXERR(Debug::GUI, "shifting "
2023 << sit->abs() << " => " << sit->displayString());
2026 // start new segment
2028 segString = nextString;
2032 // set new tab titles
2033 for (It it = paths.begin(); it != paths.end(); ++it) {
2034 int const tab_index = it->tab();
2035 Buffer const & buf = workArea(tab_index)->bufferView().buffer();
2036 QString tab_text = it->displayString().replace("&", "&&");
2037 if (!buf.fileName().empty() && !buf.isClean())
2039 QString tab_tooltip = it->abs();
2040 if (buf.hasReadonlyFlag()) {
2041 setTabIcon(tab_index, QIcon(getPixmap("images/", "emblem-readonly", "svgz,png")));
2042 tab_tooltip = qt_("%1 (read only)").arg(tab_tooltip);
2044 setTabIcon(tab_index, QIcon());
2045 if (buf.notifiesExternalModification()) {
2046 QString const warn = qt_("%1 (modified externally)");
2047 tab_tooltip = warn.arg(tab_tooltip);
2048 tab_text += QChar(0x26a0);
2050 setTabText(tab_index, tab_text);
2051 setTabToolTip(tab_index, tab_tooltip);
2056 void TabWorkArea::showContextMenu(const QPoint & pos)
2059 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
2060 if (clicked_tab_ == -1)
2065 popup.addAction(QIcon(getPixmap("images/", "hidetab", "svgz,png")),
2066 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
2067 popup.addAction(QIcon(getPixmap("images/", "closetab", "svgz,png")),
2068 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
2069 popup.exec(tabBar()->mapToGlobal(pos));
2075 void TabWorkArea::moveTab(int fromIndex, int toIndex)
2077 QWidget * w = widget(fromIndex);
2078 QIcon icon = tabIcon(fromIndex);
2079 QString text = tabText(fromIndex);
2081 setCurrentIndex(fromIndex);
2082 removeTab(fromIndex);
2083 insertTab(toIndex, w, icon, text);
2084 setCurrentIndex(toIndex);
2088 DragTabBar::DragTabBar(QWidget* parent)
2091 setAcceptDrops(true);
2092 setTabsClosable(!lyxrc.single_close_tab_button);
2096 void DragTabBar::mousePressEvent(QMouseEvent * event)
2098 if (event->button() == Qt::LeftButton)
2099 dragStartPos_ = event->pos();
2100 QTabBar::mousePressEvent(event);
2104 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
2106 // If the left button isn't pressed anymore then return
2107 if (!(event->buttons() & Qt::LeftButton))
2110 // If the distance is too small then return
2111 if ((event->pos() - dragStartPos_).manhattanLength()
2112 < QApplication::startDragDistance())
2115 // did we hit something after all?
2116 int tab = tabAt(dragStartPos_);
2120 // simulate button release to remove highlight from button
2121 int i = currentIndex();
2122 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
2123 event->button(), event->buttons(), 0);
2124 QTabBar::mouseReleaseEvent(&me);
2128 QDrag * drag = new QDrag(this);
2129 QMimeData * mimeData = new QMimeData;
2130 // a crude way to distinguish tab-reodering drops from other ones
2131 mimeData->setData("action", "tab-reordering") ;
2132 drag->setMimeData(mimeData);
2134 // get tab pixmap as cursor
2135 QRect r = tabRect(tab);
2136 QPixmap pixmap(r.size());
2137 render(&pixmap, - r.topLeft());
2138 drag->setPixmap(pixmap);
2143 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
2145 // Only accept if it's an tab-reordering request
2146 QMimeData const * m = event->mimeData();
2147 QStringList formats = m->formats();
2148 if (formats.contains("action")
2149 && m->data("action") == "tab-reordering")
2150 event->acceptProposedAction();
2154 void DragTabBar::dropEvent(QDropEvent * event)
2156 int fromIndex = tabAt(dragStartPos_);
2157 int toIndex = tabAt(event->pos());
2159 // Tell interested objects that
2160 if (fromIndex != toIndex)
2161 tabMoveRequested(fromIndex, toIndex);
2162 event->acceptProposedAction();
2166 GuiWorkAreaContainer::GuiWorkAreaContainer(GuiWorkArea * wa, QWidget * parent)
2167 : QWidget(parent), wa_(wa)
2169 LASSERT(wa, return);
2170 Ui::WorkAreaUi::setupUi(this);
2171 layout()->addWidget(wa);
2172 connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
2173 this, SLOT(updateDisplay()));
2174 connect(reloadPB, SIGNAL(clicked()), this, SLOT(reload()));
2175 connect(ignorePB, SIGNAL(clicked()), this, SLOT(ignore()));
2176 setMessageColour({notificationFrame}, {reloadPB, ignorePB});
2181 void GuiWorkAreaContainer::updateDisplay()
2183 Buffer const & buf = wa_->bufferView().buffer();
2184 notificationFrame->setHidden(!buf.notifiesExternalModification());
2185 QString const label = qt_("<b>The file %1 changed on disk.</b>")
2186 .arg(toqstr(buf.fileName().displayName()));
2187 externalModificationLabel->setText(label);
2191 void GuiWorkAreaContainer::dispatch(FuncRequest f) const
2193 lyx::dispatch(FuncRequest(LFUN_BUFFER_SWITCH,
2194 wa_->bufferView().buffer().absFileName()));
2199 void GuiWorkAreaContainer::reload() const
2201 dispatch(FuncRequest(LFUN_BUFFER_RELOAD));
2205 void GuiWorkAreaContainer::ignore() const
2207 dispatch(FuncRequest(LFUN_BUFFER_EXTERNAL_MODIFICATION_CLEAR));
2211 void GuiWorkAreaContainer::mouseDoubleClickEvent(QMouseEvent * event)
2213 // prevent TabWorkArea from opening a new buffer on double click
2218 } // namespace frontend
2221 #include "moc_GuiWorkArea.cpp"