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"
27 #include "BufferList.h"
28 #include "BufferParams.h"
29 #include "BufferView.h"
30 #include "CoordCache.h"
33 #include "FuncRequest.h"
34 #include "KeySymbol.h"
39 #include "qt_helpers.h"
41 #include "TextMetrics.h"
44 #include "graphics/GraphicsImage.h"
45 #include "graphics/GraphicsLoader.h"
47 #include "support/convert.h"
48 #include "support/debug.h"
49 #include "support/gettext.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>
71 #include <QPixmapCache>
73 #include <QStyleOption>
74 #include <QStylePainter>
76 #include <QToolButton>
80 #include "support/bind.h"
85 int const TabIndicatorWidth = 3;
91 using namespace lyx::support;
96 /// return the LyX mouse button state from Qt's
97 static mouse_button::state q_button_state(Qt::MouseButton button)
99 mouse_button::state b = mouse_button::none;
102 b = mouse_button::button1;
105 b = mouse_button::button2;
107 case Qt::RightButton:
108 b = mouse_button::button3;
117 /// return the LyX mouse button state from Qt's
118 mouse_button::state q_motion_state(Qt::MouseButtons state)
120 mouse_button::state b = mouse_button::none;
121 if (state & Qt::LeftButton)
122 b |= mouse_button::button1;
123 if (state & Qt::MidButton)
124 b |= mouse_button::button2;
125 if (state & Qt::RightButton)
126 b |= mouse_button::button3;
135 CursorWidget() : rtl_(false), l_shape_(false), completable_(false),
136 show_(false), x_(0), cursor_width_(0)
141 void draw(QPainter & painter)
143 if (!show_ || !rect_.isValid())
147 int l = x_ - rect_.left();
148 int r = rect_.right() - x_;
149 int bot = rect_.bottom();
151 // draw vertical line
152 painter.fillRect(x_, y, cursor_width_, rect_.height(), color_);
154 // draw RTL/LTR indication
155 painter.setPen(color_);
158 painter.drawLine(x_, bot, x_ - l, bot);
160 painter.drawLine(x_, bot, x_ + cursor_width_ + r, bot);
163 // draw completion triangle
165 int m = y + rect_.height() / 2;
166 int d = TabIndicatorWidth - 1;
168 painter.drawLine(x_ - 1, m - d, x_ - 1 - d, m);
169 painter.drawLine(x_ - 1, m + d, x_ - 1 - d, m);
171 painter.drawLine(x_ + cursor_width_, m - d, x_ + cursor_width_ + d, m);
172 painter.drawLine(x_ + cursor_width_, m + d, x_ + cursor_width_ + d, m);
177 void update(int x, int y, int h, bool l_shape,
178 bool rtl, bool completable)
180 color_ = guiApp->colorCache().get(Color_cursor);
183 completable_ = completable;
186 // extension to left and right
190 // RTL/LTR indication
198 // completion triangle
201 l = max(l, TabIndicatorWidth);
203 r = max(r, TabIndicatorWidth);
206 // compute overall rectangle
207 rect_ = QRect(x - l, y, cursor_width_ + r + l, h);
210 void show(bool set_show = true) { show_ = set_show; }
211 void hide() { show_ = false; }
212 int cursorWidth() const { return cursor_width_; }
213 void recomputeWidth() {
214 cursor_width_ = lyxrc.cursor_width
216 : 1 + int((lyxrc.currentZoom + 50) / 200.0);
219 QRect const & rect() { return rect_; }
222 /// cursor is in RTL or LTR text
224 /// indication for RTL or LTR
226 /// triangle to show that a completion is available
232 /// rectangle, possibly with l_shape and completion triangle
234 /// x position (were the vertical line is drawn)
241 // This is a 'heartbeat' generating synthetic mouse move events when the
242 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
243 SyntheticMouseEvent::SyntheticMouseEvent()
244 : timeout(200), restart_timeout(true)
248 GuiWorkArea::Private::Private(GuiWorkArea * parent)
249 : p(parent), buffer_view_(0), lyx_view_(0),
250 cursor_visible_(false), cursor_(0),
251 need_resize_(false), schedule_redraw_(false), preedit_lines_(1),
253 completer_(new GuiCompleter(p, p)), dialog_mode_(false), shell_escape_(false),
254 read_only_(false), clean_(true), externally_modified_(false)
259 GuiWorkArea::GuiWorkArea(QWidget * /* w */)
260 : d(new Private(this))
265 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
266 : d(new Private(this))
269 buffer.params().display_pixel_ratio = theGuiApp()->pixelRatio();
275 double GuiWorkArea::pixelRatio() const
277 #if QT_VERSION >= 0x050000
278 return qt_scale_factor * devicePixelRatio();
285 void GuiWorkArea::init()
288 connect(&d->cursor_timeout_, SIGNAL(timeout()),
289 this, SLOT(toggleCursor()));
291 int const time = QApplication::cursorFlashTime() / 2;
293 d->cursor_timeout_.setInterval(time);
294 d->cursor_timeout_.start();
296 // let's initialize this just to be safe
297 d->cursor_timeout_.setInterval(500);
300 // With Qt4.5 a mouse event will happen before the first paint event
301 // so make sure that the buffer view has an up to date metrics.
302 d->buffer_view_->resize(viewport()->width(), viewport()->height());
303 d->cursor_ = new frontend::CursorWidget();
306 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
307 setAcceptDrops(true);
308 setMouseTracking(true);
309 setMinimumSize(100, 70);
310 setFrameStyle(QFrame::NoFrame);
313 //viewport()->setAutoFillBackground(false);
314 // We don't need double-buffering nor SystemBackground on
315 // the viewport because we have our own backing pixmap.
316 //viewport()->setAttribute(Qt::WA_NoSystemBackground);
317 viewport()->setAttribute(Qt::WA_OpaquePaintEvent);
319 setFocusPolicy(Qt::StrongFocus);
321 d->setCursorShape(Qt::IBeamCursor);
323 // This connection is closed at the same time as this is destroyed.
324 d->synthetic_mouse_event_.timeout.timeout.connect([this](){
325 generateSyntheticMouseEvent();
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);
335 d->dialog_mode_ = false;
339 GuiWorkArea::~GuiWorkArea()
341 // If something is wrong with the buffer, we can ignore it safely
343 d->buffer_view_->buffer().workAreaManager().remove(this);
345 delete d->buffer_view_;
347 // Completer has a QObject parent and is thus automatically destroyed.
349 // delete completer_;
354 Qt::CursorShape GuiWorkArea::cursorShape() const
356 return viewport()->cursor().shape();
360 void GuiWorkArea::Private::setCursorShape(Qt::CursorShape shape)
362 p->viewport()->setCursor(shape);
366 void GuiWorkArea::Private::updateCursorShape()
368 setCursorShape(buffer_view_->clickableInset()
369 ? Qt::PointingHandCursor : Qt::IBeamCursor);
373 void GuiWorkArea::setGuiView(GuiView & gv)
379 void GuiWorkArea::setBuffer(Buffer & buffer)
381 delete d->buffer_view_;
382 d->buffer_view_ = new BufferView(buffer);
383 buffer.workAreaManager().add(this);
385 // HACK: Prevents an additional redraw when the scrollbar pops up
386 // which regularily happens on documents with more than one page.
387 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
388 // Since we have no geometry information yet, we assume that
389 // a document needs a scrollbar if there is more then four
390 // paragraph in the outermost text.
391 if (buffer.text().paragraphs().size() > 4)
392 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
393 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
394 Q_EMIT bufferViewChanged();
398 void GuiWorkArea::fixVerticalScrollBar()
401 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
405 void GuiWorkArea::close()
407 d->lyx_view_->removeWorkArea(this);
411 void GuiWorkArea::setFullScreen(bool full_screen)
413 d->buffer_view_->setFullScreen(full_screen);
414 setFrameStyle(QFrame::NoFrame);
416 setFrameStyle(QFrame::NoFrame);
417 if (lyxrc.full_screen_scrollbar)
418 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
420 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
424 BufferView & GuiWorkArea::bufferView()
426 return *d->buffer_view_;
430 BufferView const & GuiWorkArea::bufferView() const
432 return *d->buffer_view_;
436 void GuiWorkArea::stopBlinkingCursor()
438 d->cursor_timeout_.stop();
443 void GuiWorkArea::startBlinkingCursor()
445 // do not show the cursor if the view is busy
451 d->buffer_view_->cursorPosAndHeight(p, h);
452 // Don't start blinking if the cursor isn't on screen.
453 if (!d->buffer_view_->cursorInView(p, h))
458 //we're not supposed to cache this value.
459 int const time = QApplication::cursorFlashTime() / 2;
462 d->cursor_timeout_.setInterval(time);
463 d->cursor_timeout_.start();
467 void GuiWorkArea::redraw(bool update_metrics)
470 // No need to redraw in this case.
473 // No need to do anything if this is the current view. The BufferView
474 // metrics are already up to date.
475 if (update_metrics || d->lyx_view_ != guiApp->currentView()
476 || d->lyx_view_->currentWorkArea() != this) {
477 // FIXME: it would be nice to optimize for the off-screen case.
478 d->buffer_view_->cursor().fixIfBroken();
479 d->buffer_view_->updateMetrics();
480 d->buffer_view_->cursor().fixIfBroken();
483 // update cursor position, because otherwise it has to wait until
484 // the blinking interval is over
485 if (d->cursor_visible_) {
490 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
491 viewport()->update();
493 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
494 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
495 d->updateScrollbar();
496 d->lyx_view_->updateStatusBar();
498 if (lyxerr.debugging(Debug::WORKAREA))
499 d->buffer_view_->coordCache().dump();
503 d->updateCursorShape();
507 // Keep in sync with GuiWorkArea::processKeySym below
508 bool GuiWorkArea::queryKeySym(KeySymbol const & key, KeyModifier mod) const
510 return guiApp->queryKeySym(key, mod);
514 // Keep in sync with GuiWorkArea::queryKeySym above
515 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
517 if (d->lyx_view_->isFullScreen() && d->lyx_view_->menuBar()->isVisible()
518 && lyxrc.full_screen_menubar) {
519 // FIXME HACK: we should not have to do this here. See related comment
520 // in GuiView::event() (QEvent::ShortcutOverride)
521 d->lyx_view_->menuBar()->hide();
524 // In order to avoid bad surprise in the middle of an operation,
525 // we better stop the blinking cursor...
526 // the cursor gets restarted in GuiView::restartCursor()
527 stopBlinkingCursor();
528 guiApp->processKeySym(key, mod);
532 void GuiWorkArea::Private::dispatch(FuncRequest const & cmd)
535 if (cmd.action() == LFUN_FILE_OPEN) {
537 lyx_view_->dispatch(cmd, dr);
541 bool const notJustMovingTheMouse =
542 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
544 // In order to avoid bad surprise in the middle of an operation, we better stop
545 // the blinking cursor.
546 if (notJustMovingTheMouse)
547 p->stopBlinkingCursor();
549 buffer_view_->mouseEventDispatch(cmd);
551 // Skip these when selecting
552 // FIXME: let GuiView take care of those.
553 if (cmd.action() != LFUN_MOUSE_MOTION) {
554 completer_->updateVisibility(false, false);
555 lyx_view_->updateDialogs();
556 lyx_view_->updateStatusBar();
559 // GUI tweaks except with mouse motion with no button pressed.
560 if (notJustMovingTheMouse) {
561 // Slight hack: this is only called currently when we
562 // clicked somewhere, so we force through the display
563 // of the new status here.
564 // FIXME: let GuiView take care of those.
565 lyx_view_->clearMessage();
567 // Show the cursor immediately after any operation
568 p->startBlinkingCursor();
575 void GuiWorkArea::Private::resizeBufferView()
577 // WARNING: Please don't put any code that will trigger a repaint here!
578 // We are already inside a paint event.
579 p->stopBlinkingCursor();
580 // Warn our container (GuiView).
585 buffer_view_->cursorPosAndHeight(point, h);
586 bool const cursor_in_view = buffer_view_->cursorInView(point, h);
587 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
589 buffer_view_->scrollToCursor();
590 p->viewport()->update();
592 // Update scrollbars which might have changed due different
593 // BufferView dimension. This is especially important when the
594 // BufferView goes from zero-size to the real-size for the first time,
595 // as the scrollbar paramters are then set for the first time.
598 need_resize_ = false;
600 // Eventually, restart the cursor after the resize event.
601 // We might be resizing even if the focus is on another widget so we only
602 // restart the cursor if we have the focus.
604 QTimer::singleShot(50, p, SLOT(startBlinkingCursor()));
608 void GuiWorkArea::Private::showCursor()
615 buffer_view_->cursorPosAndHeight(p, h);
616 if (!buffer_view_->cursorInView(p, h))
620 bool l_shape = false;
621 Font const & realfont = buffer_view_->cursor().real_current_font;
622 BufferParams const & bp = buffer_view_->buffer().params();
623 bool const samelang = realfont.language() == bp.language;
624 bool const isrtl = realfont.isVisibleRightToLeft();
626 if (!samelang || isrtl != bp.language->rightToLeft())
629 // The ERT language hack needs fixing up
630 if (realfont.language() == latex_language)
633 // show cursor on screen
634 Cursor & cur = buffer_view_->cursor();
635 bool completable = cur.inset().showCompletionCursor()
636 && completer_->completionAvailable()
637 && !completer_->popupVisible()
638 && !completer_->inlineVisible();
639 cursor_visible_ = true;
640 cursor_->recomputeWidth();
642 //int cur_x = buffer_view_->getPos(cur).x_;
643 // We may have decided to slide the cursor row so that cursor
645 p.x_ -= buffer_view_->horizScrollOffset();
647 showCursor(p.x_, p.y_, h, l_shape, isrtl, completable);
651 void GuiWorkArea::Private::hideCursor()
653 if (!cursor_visible_)
656 cursor_visible_ = false;
661 void GuiWorkArea::toggleCursor()
663 if (d->cursor_visible_)
670 void GuiWorkArea::Private::updateScrollbar()
672 // Prevent setRange() and setSliderPosition from causing recursive calls via
673 // the signal valueChanged. (#10311)
674 QObject::disconnect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
675 p, SLOT(scrollTo(int)));
676 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
677 p->verticalScrollBar()->setRange(scroll_.min, scroll_.max);
678 p->verticalScrollBar()->setPageStep(scroll_.page_step);
679 p->verticalScrollBar()->setSingleStep(scroll_.single_step);
680 p->verticalScrollBar()->setSliderPosition(0);
681 // Connect to the vertical scroll bar
682 QObject::connect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
683 p, SLOT(scrollTo(int)));
687 void GuiWorkArea::scrollTo(int value)
689 stopBlinkingCursor();
690 d->buffer_view_->scrollDocView(value, true);
692 if (lyxrc.cursor_follows_scrollbar) {
693 d->buffer_view_->setCursorFromScrollbar();
694 // FIXME: let GuiView take care of those.
695 d->lyx_view_->updateLayoutList();
697 // Show the cursor immediately after any operation.
698 startBlinkingCursor();
701 QApplication::syncX();
706 bool GuiWorkArea::event(QEvent * e)
709 case QEvent::ToolTip: {
710 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
711 if (lyxrc.use_tooltip) {
712 QPoint pos = helpEvent->pos();
713 if (pos.x() < viewport()->width()) {
714 QString s = toqstr(d->buffer_view_->toolTip(pos.x(), pos.y()));
715 QToolTip::showText(helpEvent->globalPos(), formatToolTip(s,35));
718 QToolTip::hideText();
720 // Don't forget to accept the event!
725 case QEvent::ShortcutOverride:
726 // keyPressEvent is ShortcutOverride-aware and only accepts the event in
728 keyPressEvent(static_cast<QKeyEvent *>(e));
729 return e->isAccepted();
731 case QEvent::KeyPress: {
732 // We catch this event in order to catch the Tab or Shift+Tab key press
733 // which are otherwise reserved to focus switching between controls
735 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
736 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
737 || (ke->key() == Qt::Key_Backtab && (
738 ke->modifiers() == Qt::ShiftModifier
739 || ke->modifiers() == Qt::NoModifier))) {
743 return QAbstractScrollArea::event(e);
747 return QAbstractScrollArea::event(e);
753 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
756 if (e->reason() == QContextMenuEvent::Mouse)
757 // the menu name is set on mouse press
758 name = d->context_menu_name_;
760 QPoint pos = e->pos();
761 Cursor const & cur = d->buffer_view_->cursor();
762 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
763 // Do not access the context menu of math right in front of before
764 // the cursor. This does not work when the cursor is in text.
765 Inset * inset = cur.paragraph().getInset(cur.pos());
766 if (inset && inset->asInsetMath())
768 else if (cur.pos() > 0) {
769 Inset * inset = cur.paragraph().getInset(cur.pos() - 1);
774 name = d->buffer_view_->contextMenu(pos.x(), pos.y());
781 // always show mnemonics when the keyboard is used to show the context menu
782 // FIXME: This should be fixed in Qt itself
783 bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
784 QMenu * menu = guiApp->menus().menu(toqstr(name), *d->lyx_view_, keyboard);
789 // Position the menu to the right.
790 // FIXME: menu position should be different for RTL text.
791 menu->exec(e->globalPos());
796 void GuiWorkArea::focusInEvent(QFocusEvent * e)
798 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
799 if (d->lyx_view_->currentWorkArea() != this) {
800 d->lyx_view_->setCurrentWorkArea(this);
801 d->lyx_view_->currentWorkArea()->bufferView().buffer().updateBuffer();
804 startBlinkingCursor();
805 QAbstractScrollArea::focusInEvent(e);
809 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
811 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
812 stopBlinkingCursor();
813 QAbstractScrollArea::focusOutEvent(e);
817 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
819 if (d->dc_event_.active && d->dc_event_ == *e) {
820 d->dc_event_.active = false;
821 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
822 q_button_state(e->button()), q_key_state(e->modifiers()));
828 #if (QT_VERSION < 0x050000) && !defined(__HAIKU__)
829 inputContext()->reset();
832 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
833 q_button_state(e->button()), q_key_state(e->modifiers()));
836 // Save the context menu on mouse press, because also the mouse
837 // cursor is set on mouse press. Afterwards, we can either release
838 // the mousebutton somewhere else, or the cursor might have moved
839 // due to the DEPM. We need to do this after the mouse has been
840 // set in dispatch(), because the selection state might change.
841 if (e->button() == Qt::RightButton)
842 d->context_menu_name_ = d->buffer_view_->contextMenu(e->x(), e->y());
848 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
850 if (d->synthetic_mouse_event_.timeout.running())
851 d->synthetic_mouse_event_.timeout.stop();
853 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
854 q_button_state(e->button()), q_key_state(e->modifiers()));
860 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
862 // we kill the triple click if we move
863 doubleClickTimeout();
864 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
865 q_motion_state(e->buttons()), q_key_state(e->modifiers()));
869 // If we're above or below the work area...
870 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
871 && e->buttons() == mouse_button::button1) {
872 // Make sure only a synthetic event can cause a page scroll,
873 // so they come at a steady rate:
875 // _Force_ a scroll up:
876 cmd.set_y(e->y() - 21);
878 cmd.set_y(e->y() + 21);
879 // Store the event, to be handled when the timeout expires.
880 d->synthetic_mouse_event_.cmd = cmd;
882 if (d->synthetic_mouse_event_.timeout.running()) {
883 // Discard the event. Note that it _may_ be handled
884 // when the timeout expires if
885 // synthetic_mouse_event_.cmd has not been overwritten.
886 // Ie, when the timeout expires, we handle the
887 // most recent event but discard all others that
888 // occurred after the one used to start the timeout
889 // in the first place.
893 d->synthetic_mouse_event_.restart_timeout = true;
894 d->synthetic_mouse_event_.timeout.start();
895 // Fall through to handle this event...
897 } else if (d->synthetic_mouse_event_.timeout.running()) {
898 // Store the event, to be possibly handled when the timeout
900 // Once the timeout has expired, normal control is returned
901 // to mouseMoveEvent (restart_timeout = false).
902 // This results in a much smoother 'feel' when moving the
903 // mouse back into the work area.
904 d->synthetic_mouse_event_.cmd = cmd;
905 d->synthetic_mouse_event_.restart_timeout = false;
912 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
914 // Wheel rotation by one notch results in a delta() of 120 (see
915 // documentation of QWheelEvent)
916 double const delta = ev->delta() / 120.0;
918 switch (lyxrc.scroll_wheel_zoom) {
919 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
920 zoom = ev->modifiers() & Qt::ControlModifier;
921 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
923 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
924 zoom = ev->modifiers() & Qt::ShiftModifier;
925 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
927 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
928 zoom = ev->modifiers() & Qt::AltModifier;
929 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
931 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
935 docstring arg = convert<docstring>(int(5 * delta));
936 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
940 // Take into account the desktop wide settings.
941 int const lines = qApp->wheelScrollLines();
942 int const page_step = verticalScrollBar()->pageStep();
943 // Test if the wheel mouse is set to one screen at a time.
944 // This is according to
945 // https://doc.qt.io/qt-5/qapplication.html#wheelScrollLines-prop
947 min(lines * verticalScrollBar()->singleStep(), page_step);
949 // Take into account the rotation and the user preferences.
950 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
951 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
952 << " delta = " << delta << " scroll_value = " << scroll_value
953 << " page_step = " << page_step);
955 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
961 void GuiWorkArea::generateSyntheticMouseEvent()
963 int const e_y = d->synthetic_mouse_event_.cmd.y();
964 int const wh = d->buffer_view_->workHeight();
965 bool const up = e_y < 0;
966 bool const down = e_y > wh;
968 // Set things off to generate the _next_ 'pseudo' event.
970 if (d->synthetic_mouse_event_.restart_timeout) {
971 // This is some magic formulae to determine the speed
972 // of scrolling related to the position of the mouse.
975 int dist = up ? -e_y : e_y - wh;
976 time = max(min(200, 250000 / (dist * dist)), 1) ;
979 step = 80000 / (time * time);
983 d->synthetic_mouse_event_.timeout.setTimeout(time);
984 d->synthetic_mouse_event_.timeout.start();
987 // Can we scroll further ?
988 int const value = verticalScrollBar()->value();
989 if (value == verticalScrollBar()->maximum()
990 || value == verticalScrollBar()->minimum()) {
991 d->synthetic_mouse_event_.timeout.stop();
996 if (step <= 2 * wh) {
997 d->buffer_view_->scroll(up ? -step : step);
998 d->buffer_view_->updateMetrics();
1000 d->buffer_view_->scrollDocView(value + (up ? -step : step), false);
1003 // In which paragraph do we have to set the cursor ?
1004 Cursor & cur = d->buffer_view_->cursor();
1005 // FIXME: we don't know how to handle math.
1006 Text * text = cur.text();
1009 TextMetrics const & tm = d->buffer_view_->textMetrics(text);
1011 // Quit gracefully if there are no metrics, since otherwise next
1012 // line would crash (bug #10324).
1013 // This situation seems related to a (not yet understood) timing problem.
1017 pair<pit_type, const ParagraphMetrics *> pp = up ? tm.first() : tm.last();
1018 ParagraphMetrics const & pm = *pp.second;
1019 pit_type const pit = pp.first;
1021 if (pm.rows().empty())
1024 // Find the row at which we set the cursor.
1025 RowList::const_iterator rit = pm.rows().begin();
1026 RowList::const_iterator rlast = pm.rows().end();
1027 int yy = pm.position() - pm.ascent();
1028 for (--rlast; rit != rlast; ++rit) {
1029 int h = rit->height();
1030 if ((up && yy + h > 0)
1031 || (!up && yy + h > wh - defaultRowHeight()))
1036 // Find the position of the cursor
1038 int x = d->synthetic_mouse_event_.cmd.x();
1039 pos_type const pos = tm.getPosNearX(*rit, x, bound);
1044 cur.boundary(bound);
1046 d->buffer_view_->buffer().changed(false);
1051 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
1053 // this is also called for ShortcutOverride events. In this case, one must
1054 // not act but simply accept the event explicitly.
1055 bool const act = (ev->type() != QEvent::ShortcutOverride);
1057 // Do not process here some keys if dialog_mode_ is set
1059 && (ev->modifiers() == Qt::NoModifier
1060 || ev->modifiers() == Qt::ShiftModifier)
1061 && (ev->key() == Qt::Key_Escape
1062 || ev->key() == Qt::Key_Enter
1063 || ev->key() == Qt::Key_Return)
1069 // intercept some keys if completion popup is visible
1070 if (d->completer_->popupVisible()) {
1071 switch (ev->key()) {
1073 case Qt::Key_Return:
1075 d->completer_->activate();
1081 // do nothing if there are other events
1082 // (the auto repeated events come too fast)
1083 // it looks like this is only needed on X11
1084 #if defined(Q_WS_X11) || defined(QPA_XCB)
1085 // FIXME: this is a weird way to implement event compression. Also, this is
1086 // broken with IBus.
1087 if (act && qApp->hasPendingEvents() && ev->isAutoRepeat()) {
1088 switch (ev->key()) {
1089 case Qt::Key_PageDown:
1090 case Qt::Key_PageUp:
1095 LYXERR(Debug::KEY, "system is busy: scroll key event ignored");
1102 KeyModifier const m = q_key_state(ev->modifiers());
1105 if (m & ShiftModifier)
1107 if (m & ControlModifier)
1109 if (m & AltModifier)
1111 if (m & MetaModifier)
1115 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1116 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
1117 << " keyState: " << str);
1120 setKeySymbol(&sym, ev);
1123 processKeySym(sym, m);
1126 ev->setAccepted(queryKeySym(sym, m));
1133 void GuiWorkArea::doubleClickTimeout()
1135 d->dc_event_.active = false;
1139 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1141 d->dc_event_ = DoubleClick(ev);
1142 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1143 SLOT(doubleClickTimeout()));
1144 FuncRequest cmd(LFUN_MOUSE_DOUBLE, ev->x(), ev->y(),
1145 q_button_state(ev->button()), q_key_state(ev->modifiers()));
1151 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1153 QAbstractScrollArea::resizeEvent(ev);
1154 d->need_resize_ = true;
1159 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1161 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1162 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1164 if (d->needResize()) {
1165 d->resizeBufferView();
1166 if (d->cursor_visible_) {
1172 GuiPainter pain(viewport(), pixelRatio());
1173 d->buffer_view_->draw(pain);
1175 d->cursor_->draw(pain);
1180 void GuiWorkArea::Private::showCursor(int x, int y, int h,
1181 bool l_shape, bool rtl, bool completable)
1183 if (schedule_redraw_) {
1184 // This happens when a graphic conversion is finished. As we don't know
1185 // the size of the new graphics, it's better the update everything.
1186 // We can't use redraw() here because this would trigger a infinite
1187 // recursive loop with showCursor().
1188 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
1189 p->viewport()->update();
1191 schedule_redraw_ = false;
1192 // Show the cursor immediately after the update.
1198 cursor_->update(x, y, h, l_shape, rtl, completable);
1200 p->viewport()->update(cursor_->rect());
1204 void GuiWorkArea::Private::removeCursor()
1207 //if (!qApp->focusWidget())
1208 p->viewport()->update(cursor_->rect());
1212 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1214 //FIXME Broken Feature !!
1215 // I do not think that we are supposed to paint inside this event. Shall we
1216 // just let TextMetrics::breakRow add this to the relevant Row object?
1218 QString const & commit_string = e->commitString();
1219 docstring const & preedit_string
1220 = qstring_to_ucs4(e->preeditString());
1222 if (!commit_string.isEmpty()) {
1224 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1225 << " commitString: " << e->commitString());
1229 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
1230 for (int i = 0; i != commit_string.size(); ++i) {
1231 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
1236 // Hide the cursor during the kana-kanji transformation.
1237 if (preedit_string.empty())
1238 startBlinkingCursor();
1240 stopBlinkingCursor();
1242 // last_width : for checking if last preedit string was/wasn't empty.
1243 // FIXME THREAD && FIXME
1244 // We could have more than one work area, right?
1245 static bool last_width = false;
1246 if (!last_width && preedit_string.empty()) {
1247 // if last_width is last length of preedit string.
1252 d->buffer_view_->updateMetrics();
1253 viewport()->update();
1254 // FIXME: shall we use real_current_font here? (see #10478)
1255 FontInfo font = d->buffer_view_->cursor().getFont().fontInfo();
1256 FontMetrics const & fm = theFontMetrics(font);
1257 int height = fm.maxHeight();
1258 int cur_x = d->cursor_->rect().left();
1259 int cur_y = d->cursor_->rect().bottom();
1261 // redraw area of preedit string.
1262 viewport()->update(0, cur_y - height, viewport()->width(),
1263 (height + 1) * d->preedit_lines_);
1265 if (preedit_string.empty()) {
1267 d->preedit_lines_ = 1;
1273 // att : stores an IM attribute.
1274 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
1276 // get attributes of input method cursor.
1277 // cursor_pos : cursor position in preedit string.
1278 size_t cursor_pos = 0;
1279 bool cursor_is_visible = false;
1280 for (int i = 0; i != att.size(); ++i) {
1281 if (att.at(i).type == QInputMethodEvent::Cursor) {
1282 cursor_pos = att.at(i).start;
1283 cursor_is_visible = att.at(i).length != 0;
1288 size_t preedit_length = preedit_string.length();
1290 // get position of selection in input method.
1291 // FIXME: isn't there a way to do this simplier?
1292 // rStart : cursor position in selected string in IM.
1294 // rLength : selected string length in IM.
1296 if (cursor_pos < preedit_length) {
1297 for (int i = 0; i != att.size(); ++i) {
1298 if (att.at(i).type == QInputMethodEvent::TextFormat) {
1299 if (att.at(i).start <= int(cursor_pos)
1300 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
1301 rStart = att.at(i).start;
1302 rLength = att.at(i).length;
1303 if (!cursor_is_visible)
1304 cursor_pos += rLength;
1311 rStart = cursor_pos;
1315 int const right_margin = d->buffer_view_->rightMargin();
1316 Painter::preedit_style ps;
1317 // Most often there would be only one line:
1318 d->preedit_lines_ = 1;
1319 for (size_t pos = 0; pos != preedit_length; ++pos) {
1320 char_type const typed_char = preedit_string[pos];
1321 // reset preedit string style
1322 ps = Painter::preedit_default;
1324 // if we reached the right extremity of the screen, go to next line.
1325 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
1326 cur_x = right_margin;
1327 cur_y += height + 1;
1328 ++d->preedit_lines_;
1330 // preedit strings are displayed with dashed underline
1331 // and partial strings are displayed white on black indicating
1332 // that we are in selecting mode in the input method.
1333 // FIXME: rLength == preedit_length is not a changing condition
1334 // FIXME: should be put out of the loop.
1336 && pos < rStart + rLength
1337 && !(cursor_pos < rLength && rLength == preedit_length))
1338 ps = Painter::preedit_selecting;
1340 if (pos == cursor_pos
1341 && (cursor_pos < rLength && rLength == preedit_length))
1342 ps = Painter::preedit_cursor;
1344 // draw one character and update cur_x.
1345 GuiPainter pain(d->screen_, pixelRatio());
1346 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1349 // update the preedit string screen area.
1350 viewport()->update(0, cur_y - d->preedit_lines_*height, viewport()->width(),
1351 (height + 1) * d->preedit_lines_);
1354 // Don't forget to accept the event!
1359 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1361 QRect cur_r(0, 0, 0, 0);
1363 // this is the CJK-specific composition window position and
1364 // the context menu position when the menu key is pressed.
1365 case Qt::ImMicroFocus:
1366 cur_r = d->cursor_->rect();
1367 if (d->preedit_lines_ != 1)
1369 cur_r.moveBottom(cur_r.bottom()
1370 + cur_r.height() * (d->preedit_lines_ - 1));
1371 // return lower right of cursor in LyX.
1374 return QWidget::inputMethodQuery(query);
1379 void GuiWorkArea::updateWindowTitle()
1381 Buffer const & buf = bufferView().buffer();
1382 if (buf.fileName() != d->file_name_
1383 || buf.params().shell_escape != d->shell_escape_
1384 || buf.hasReadonlyFlag() != d->read_only_
1385 || buf.lyxvc().vcstatus() != d->vc_status_
1386 || buf.isClean() != d->clean_
1387 || buf.notifiesExternalModification() != d->externally_modified_) {
1388 d->file_name_ = buf.fileName();
1389 d->shell_escape_ = buf.params().shell_escape;
1390 d->read_only_ = buf.hasReadonlyFlag();
1391 d->vc_status_ = buf.lyxvc().vcstatus();
1392 d->clean_ = buf.isClean();
1393 d->externally_modified_ = buf.notifiesExternalModification();
1394 Q_EMIT titleChanged(this);
1399 bool GuiWorkArea::isFullScreen() const
1401 return d->lyx_view_ && d->lyx_view_->isFullScreen();
1405 void GuiWorkArea::scheduleRedraw()
1407 d->schedule_redraw_ = true;
1411 bool GuiWorkArea::inDialogMode() const
1413 return d->dialog_mode_;
1417 void GuiWorkArea::setDialogMode(bool mode)
1419 d->dialog_mode_ = mode;
1423 GuiCompleter & GuiWorkArea::completer()
1425 return *d->completer_;
1428 GuiView const & GuiWorkArea::view() const
1430 return *d->lyx_view_;
1434 GuiView & GuiWorkArea::view()
1436 return *d->lyx_view_;
1439 ////////////////////////////////////////////////////////////////////
1443 ////////////////////////////////////////////////////////////////////
1446 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1448 support::TempFile tempfile("embedded.internal");
1449 tempfile.setAutoRemove(false);
1450 buffer_ = theBufferList().newInternalBuffer(tempfile.name().absFileName());
1451 buffer_->setUnnamed(true);
1452 buffer_->setFullyLoaded(true);
1453 setBuffer(*buffer_);
1454 setDialogMode(true);
1458 EmbeddedWorkArea::~EmbeddedWorkArea()
1460 // No need to destroy buffer and bufferview here, because it is done
1461 // in theBufferList() destruction loop at application exit
1465 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1468 GuiWorkArea::closeEvent(ev);
1472 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1475 GuiWorkArea::hideEvent(ev);
1479 QSize EmbeddedWorkArea::sizeHint () const
1482 // GuiWorkArea sets the size to the screen's viewport
1483 // by returning a value this gets overridden
1484 // EmbeddedWorkArea is now sized to fit in the layout
1485 // of the parent, and has a minimum size set in GuiWorkArea
1486 // which is what we return here
1487 return QSize(100, 70);
1491 void EmbeddedWorkArea::disable()
1493 stopBlinkingCursor();
1494 if (view().currentWorkArea() != this)
1496 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1497 // tolerates it and shows the background logo), what happens if
1498 // an EmbeddedWorkArea is closed after closing all document WAs
1499 view().setCurrentWorkArea(view().currentMainWorkArea());
1502 ////////////////////////////////////////////////////////////////////
1506 ////////////////////////////////////////////////////////////////////
1509 class NoTabFrameMacStyle : public QProxyStyle {
1512 QRect subElementRect(SubElement element, const QStyleOption * option,
1513 const QWidget * widget = 0) const
1515 QRect rect = QProxyStyle::subElementRect(element, option, widget);
1516 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1518 // The Qt Mac style puts the contents into a 3 pixel wide box
1519 // which looks very ugly and not like other Mac applications.
1520 // Hence we remove this here, and moreover the 16 pixel round
1521 // frame above if the tab bar is hidden.
1522 if (element == QStyle::SE_TabWidgetTabContents) {
1523 rect.adjust(- rect.left(), 0, rect.left(), 0);
1532 NoTabFrameMacStyle noTabFrameMacStyle;
1536 TabWorkArea::TabWorkArea(QWidget * parent)
1537 : QTabWidget(parent), clicked_tab_(-1), midpressed_tab_(-1)
1540 setStyle(&noTabFrameMacStyle);
1543 QPalette pal = palette();
1544 pal.setColor(QPalette::Active, QPalette::Button,
1545 pal.color(QPalette::Active, QPalette::Window));
1546 pal.setColor(QPalette::Disabled, QPalette::Button,
1547 pal.color(QPalette::Disabled, QPalette::Window));
1548 pal.setColor(QPalette::Inactive, QPalette::Button,
1549 pal.color(QPalette::Inactive, QPalette::Window));
1551 QObject::connect(this, SIGNAL(currentChanged(int)),
1552 this, SLOT(on_currentTabChanged(int)));
1554 closeBufferButton = new QToolButton(this);
1555 closeBufferButton->setPalette(pal);
1556 // FIXME: rename the icon to closebuffer.png
1557 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "svgz,png")));
1558 closeBufferButton->setText("Close File");
1559 closeBufferButton->setAutoRaise(true);
1560 closeBufferButton->setCursor(Qt::ArrowCursor);
1561 closeBufferButton->setToolTip(qt_("Close File"));
1562 closeBufferButton->setEnabled(true);
1563 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1564 this, SLOT(closeCurrentBuffer()));
1565 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1567 // setup drag'n'drop
1568 QTabBar* tb = new DragTabBar;
1569 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1570 this, SLOT(moveTab(int, int)));
1571 tb->setElideMode(Qt::ElideNone);
1574 // make us responsible for the context menu of the tabbar
1575 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1576 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1577 this, SLOT(showContextMenu(const QPoint &)));
1578 connect(tb, SIGNAL(tabCloseRequested(int)),
1579 this, SLOT(closeTab(int)));
1581 setUsesScrollButtons(true);
1585 void TabWorkArea::mousePressEvent(QMouseEvent *me)
1587 if (me->button() == Qt::MidButton)
1588 midpressed_tab_ = tabBar()->tabAt(me->pos());
1590 QTabWidget::mousePressEvent(me);
1594 void TabWorkArea::mouseReleaseEvent(QMouseEvent *me)
1596 if (me->button() == Qt::MidButton) {
1597 int const midreleased_tab = tabBar()->tabAt(me->pos());
1598 if (midpressed_tab_ == midreleased_tab && posIsTab(me->pos()))
1599 closeTab(midreleased_tab);
1601 QTabWidget::mouseReleaseEvent(me);
1605 void TabWorkArea::paintEvent(QPaintEvent * event)
1607 if (tabBar()->isVisible()) {
1608 QTabWidget::paintEvent(event);
1610 // Prevent the selected tab to influence the
1611 // painting of the frame of the tab widget.
1612 // This is needed for gtk style in Qt.
1613 QStylePainter p(this);
1614 #if QT_VERSION < 0x050000
1615 QStyleOptionTabWidgetFrameV2 opt;
1617 QStyleOptionTabWidgetFrame opt;
1619 initStyleOption(&opt);
1620 opt.rect = style()->subElementRect(QStyle::SE_TabWidgetTabPane,
1622 opt.selectedTabRect = QRect();
1623 p.drawPrimitive(QStyle::PE_FrameTabWidget, opt);
1628 bool TabWorkArea::posIsTab(QPoint position)
1630 // tabAt returns -1 if tab does not covers position
1631 return tabBar()->tabAt(position) > -1;
1635 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1637 if (event->button() != Qt::LeftButton)
1640 // this code chunk is unnecessary because it seems the event only makes
1641 // it this far if it is not on a tab. I'm not sure why this is (maybe
1642 // it is handled and ended in DragTabBar?), and thus I'm not sure if
1643 // this is true in all cases and if it will be true in the future so I
1644 // leave this code for now. (skostysh, 2016-07-21)
1646 // return early if double click on existing tabs
1647 if (posIsTab(event->pos()))
1650 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1654 void TabWorkArea::setFullScreen(bool full_screen)
1656 for (int i = 0; i != count(); ++i) {
1657 if (GuiWorkArea * wa = workArea(i))
1658 wa->setFullScreen(full_screen);
1661 if (lyxrc.full_screen_tabbar)
1662 showBar(!full_screen && count() > 1);
1664 showBar(count() > 1);
1668 void TabWorkArea::showBar(bool show)
1670 tabBar()->setEnabled(show);
1671 tabBar()->setVisible(show);
1672 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1673 setTabsClosable(!lyxrc.single_close_tab_button);
1677 GuiWorkAreaContainer * TabWorkArea::widget(int index) const
1679 QWidget * w = QTabWidget::widget(index);
1682 GuiWorkAreaContainer * wac = dynamic_cast<GuiWorkAreaContainer *>(w);
1688 GuiWorkAreaContainer * TabWorkArea::currentWidget() const
1690 return widget(currentIndex());
1694 GuiWorkArea * TabWorkArea::workArea(int index) const
1696 GuiWorkAreaContainer * w = widget(index);
1699 return w->workArea();
1703 GuiWorkArea * TabWorkArea::currentWorkArea() const
1705 return workArea(currentIndex());
1709 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer) const
1711 // FIXME: this method doesn't work if we have more than one work area
1712 // showing the same buffer.
1713 for (int i = 0; i != count(); ++i) {
1714 GuiWorkArea * wa = workArea(i);
1715 LASSERT(wa, return 0);
1716 if (&wa->bufferView().buffer() == &buffer)
1723 void TabWorkArea::closeAll()
1726 QWidget * wac = widget(0);
1727 LASSERT(wac, return);
1734 int TabWorkArea::indexOfWorkArea(GuiWorkArea * w) const
1736 for (int index = 0; index < count(); ++index)
1737 if (workArea(index) == w)
1743 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1745 LASSERT(work_area, return false);
1746 int index = indexOfWorkArea(work_area);
1750 if (index == currentIndex())
1751 // Make sure the work area is up to date.
1752 on_currentTabChanged(index);
1754 // Switch to the work area.
1755 setCurrentIndex(index);
1756 work_area->setFocus();
1762 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1764 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1765 GuiWorkAreaContainer * wac = new GuiWorkAreaContainer(wa);
1766 wa->setUpdatesEnabled(false);
1767 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1768 // when hiding it again below).
1769 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1770 showBar(count() > 0);
1771 addTab(wac, wa->windowTitle());
1772 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1773 this, SLOT(updateTabTexts()));
1774 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1775 setFullScreen(true);
1777 // Hide tabbar if there's only one tab.
1778 showBar(count() > 1);
1786 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1788 LASSERT(work_area, return false);
1789 int index = indexOfWorkArea(work_area);
1793 work_area->setUpdatesEnabled(false);
1794 QWidget * wac = widget(index);
1799 // make sure the next work area is enabled.
1800 currentWidget()->setUpdatesEnabled(true);
1801 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1802 setFullScreen(true);
1804 // Show tabbar only if there's more than one tab.
1805 showBar(count() > 1);
1807 lastWorkAreaRemoved();
1815 void TabWorkArea::on_currentTabChanged(int i)
1817 // returns e.g. on application destruction
1820 GuiWorkArea * wa = workArea(i);
1821 LASSERT(wa, return);
1822 wa->setUpdatesEnabled(true);
1826 currentWorkAreaChanged(wa);
1828 LYXERR(Debug::GUI, "currentTabChanged " << i
1829 << " File: " << wa->bufferView().buffer().absFileName());
1833 void TabWorkArea::closeCurrentBuffer()
1836 if (clicked_tab_ == -1)
1837 wa = currentWorkArea();
1839 wa = workArea(clicked_tab_);
1840 LASSERT(wa, return);
1842 wa->view().closeWorkArea(wa);
1846 void TabWorkArea::hideCurrentTab()
1849 if (clicked_tab_ == -1)
1850 wa = currentWorkArea();
1852 wa = workArea(clicked_tab_);
1853 LASSERT(wa, return);
1855 wa->view().hideWorkArea(wa);
1859 void TabWorkArea::closeTab(int index)
1861 on_currentTabChanged(index);
1864 wa = currentWorkArea();
1866 wa = workArea(index);
1867 LASSERT(wa, return);
1869 wa->view().closeWorkArea(wa);
1876 /// make vector happy
1877 DisplayPath() : tab_(-1), dottedPrefix_(false) {}
1879 DisplayPath(int tab, FileName const & filename)
1882 filename_ = (filename.extension() == "lyx") ?
1883 toqstr(filename.onlyFileNameWithoutExt())
1884 : toqstr(filename.onlyFileName());
1885 postfix_ = toqstr(filename.absoluteFilePath()).
1886 split("/", QString::SkipEmptyParts);
1887 postfix_.pop_back();
1888 abs_ = toqstr(filename.absoluteFilePath());
1889 dottedPrefix_ = false;
1892 /// Absolute path for debugging.
1897 /// Add the first segment from the postfix or three dots to the prefix.
1898 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1899 /// when really needed.
1900 void shiftPathSegment(bool dotted)
1902 if (postfix_.count() <= 0)
1906 if (dottedPrefix_ && !prefix_.isEmpty())
1907 prefix_ += ellipsisSlash_;
1908 prefix_ += postfix_.front() + "/";
1910 dottedPrefix_ = dotted && !prefix_.isEmpty();
1911 postfix_.pop_front();
1914 QString displayString() const
1916 if (prefix_.isEmpty())
1919 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1920 return prefix_ + (dots ? ellipsisSlash_ : "") + filename_;
1923 QString forecastPathString() const
1925 if (postfix_.count() == 0)
1926 return displayString();
1929 + (dottedPrefix_ ? ellipsisSlash_ : "")
1930 + postfix_.front() + "/";
1933 bool final() const { return postfix_.empty(); }
1935 int tab() const { return tab_; }
1939 static QString const ellipsisSlash_;
1943 QStringList postfix_;
1955 QString const DisplayPath::ellipsisSlash_ = QString(QChar(0x2026)) + "/";
1959 bool operator<(DisplayPath const & a, DisplayPath const & b)
1961 return a.displayString() < b.displayString();
1965 bool operator==(DisplayPath const & a, DisplayPath const & b)
1967 return a.displayString() == b.displayString();
1971 void TabWorkArea::updateTabTexts()
1976 std::list<DisplayPath> paths;
1977 typedef std::list<DisplayPath>::iterator It;
1979 // collect full names first: path into postfix, empty prefix and
1980 // filename without extension
1981 for (size_t i = 0; i < n; ++i) {
1982 GuiWorkArea * i_wa = workArea(i);
1983 FileName const fn = i_wa->bufferView().buffer().fileName();
1984 paths.push_back(DisplayPath(i, fn));
1987 // go through path segments and see if it helps to make the path more unique
1988 bool somethingChanged = true;
1989 bool allFinal = false;
1990 while (somethingChanged && !allFinal) {
1991 // adding path segments changes order
1994 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1995 somethingChanged = false;
1998 // find segments which are not unique (i.e. non-atomic)
1999 It it = paths.begin();
2001 QString segString = it->displayString();
2002 for (; it != paths.end(); ++it) {
2003 // look to the next item
2008 allFinal = allFinal && it->final();
2010 LYXERR(Debug::GUI, "it = " << it->abs()
2011 << " => " << it->displayString());
2013 // still the same segment?
2015 if ((next != paths.end()
2016 && (nextString = next->displayString()) == segString))
2018 LYXERR(Debug::GUI, "segment ended");
2020 // only a trivial one with one element?
2021 if (it == segStart) {
2022 // start new segment
2024 segString = nextString;
2028 // We found a non-atomic segment
2029 // We know that segStart <= it < next <= paths.end().
2030 // The assertion below tells coverity about it.
2031 LATTEST(segStart != paths.end());
2032 QString dspString = segStart->forecastPathString();
2033 LYXERR(Debug::GUI, "first forecast found for "
2034 << segStart->abs() << " => " << dspString);
2037 // Shift path segments and hope for the best
2038 // that it makes the path more unique.
2039 somethingChanged = true;
2040 bool moreUnique = false;
2041 for (; sit != next; ++sit) {
2042 if (sit->forecastPathString() != dspString) {
2043 LYXERR(Debug::GUI, "different forecast found for "
2044 << sit->abs() << " => " << sit->forecastPathString());
2048 LYXERR(Debug::GUI, "same forecast found for "
2049 << sit->abs() << " => " << dspString);
2052 // if the path segment helped, add it. Otherwise add dots
2053 bool dots = !moreUnique;
2054 LYXERR(Debug::GUI, "using dots = " << dots);
2055 for (sit = segStart; sit != next; ++sit) {
2056 sit->shiftPathSegment(dots);
2057 LYXERR(Debug::GUI, "shifting "
2058 << sit->abs() << " => " << sit->displayString());
2061 // start new segment
2063 segString = nextString;
2067 // set new tab titles
2068 for (It it = paths.begin(); it != paths.end(); ++it) {
2069 int const tab_index = it->tab();
2070 Buffer const & buf = workArea(tab_index)->bufferView().buffer();
2071 QString tab_text = it->displayString().replace("&", "&&");
2072 if (!buf.fileName().empty() && !buf.isClean())
2074 QString tab_tooltip = it->abs();
2075 if (buf.hasReadonlyFlag()) {
2076 setTabIcon(tab_index, QIcon(getPixmap("images/", "emblem-readonly", "svgz,png")));
2077 tab_tooltip = qt_("%1 (read only)").arg(tab_tooltip);
2079 setTabIcon(tab_index, QIcon());
2080 if (buf.notifiesExternalModification()) {
2081 QString const warn = qt_("%1 (modified externally)");
2082 tab_tooltip = warn.arg(tab_tooltip);
2083 tab_text += QChar(0x26a0);
2085 setTabText(tab_index, tab_text);
2086 setTabToolTip(tab_index, tab_tooltip);
2091 void TabWorkArea::showContextMenu(const QPoint & pos)
2094 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
2095 if (clicked_tab_ == -1)
2100 popup.addAction(QIcon(getPixmap("images/", "hidetab", "svgz,png")),
2101 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
2102 popup.addAction(QIcon(getPixmap("images/", "closetab", "svgz,png")),
2103 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
2104 popup.exec(tabBar()->mapToGlobal(pos));
2110 void TabWorkArea::moveTab(int fromIndex, int toIndex)
2112 QWidget * w = widget(fromIndex);
2113 QIcon icon = tabIcon(fromIndex);
2114 QString text = tabText(fromIndex);
2116 setCurrentIndex(fromIndex);
2117 removeTab(fromIndex);
2118 insertTab(toIndex, w, icon, text);
2119 setCurrentIndex(toIndex);
2123 DragTabBar::DragTabBar(QWidget* parent)
2126 setAcceptDrops(true);
2127 setTabsClosable(!lyxrc.single_close_tab_button);
2131 void DragTabBar::mousePressEvent(QMouseEvent * event)
2133 if (event->button() == Qt::LeftButton)
2134 dragStartPos_ = event->pos();
2135 QTabBar::mousePressEvent(event);
2139 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
2141 // If the left button isn't pressed anymore then return
2142 if (!(event->buttons() & Qt::LeftButton))
2145 // If the distance is too small then return
2146 if ((event->pos() - dragStartPos_).manhattanLength()
2147 < QApplication::startDragDistance())
2150 // did we hit something after all?
2151 int tab = tabAt(dragStartPos_);
2155 // simulate button release to remove highlight from button
2156 int i = currentIndex();
2157 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
2158 event->button(), event->buttons(), 0);
2159 QTabBar::mouseReleaseEvent(&me);
2163 QDrag * drag = new QDrag(this);
2164 QMimeData * mimeData = new QMimeData;
2165 // a crude way to distinguish tab-reodering drops from other ones
2166 mimeData->setData("action", "tab-reordering") ;
2167 drag->setMimeData(mimeData);
2169 // get tab pixmap as cursor
2170 QRect r = tabRect(tab);
2171 QPixmap pixmap(r.size());
2172 render(&pixmap, - r.topLeft());
2173 drag->setPixmap(pixmap);
2178 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
2180 // Only accept if it's an tab-reordering request
2181 QMimeData const * m = event->mimeData();
2182 QStringList formats = m->formats();
2183 if (formats.contains("action")
2184 && m->data("action") == "tab-reordering")
2185 event->acceptProposedAction();
2189 void DragTabBar::dropEvent(QDropEvent * event)
2191 int fromIndex = tabAt(dragStartPos_);
2192 int toIndex = tabAt(event->pos());
2194 // Tell interested objects that
2195 if (fromIndex != toIndex)
2196 tabMoveRequested(fromIndex, toIndex);
2197 event->acceptProposedAction();
2201 GuiWorkAreaContainer::GuiWorkAreaContainer(GuiWorkArea * wa, QWidget * parent)
2202 : QWidget(parent), wa_(wa)
2204 LASSERT(wa, return);
2205 Ui::WorkAreaUi::setupUi(this);
2206 layout()->addWidget(wa);
2207 connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
2208 this, SLOT(updateDisplay()));
2209 connect(reloadPB, SIGNAL(clicked()), this, SLOT(reload()));
2210 connect(ignorePB, SIGNAL(clicked()), this, SLOT(ignore()));
2211 setMessageColour({notificationFrame}, {reloadPB, ignorePB});
2216 void GuiWorkAreaContainer::updateDisplay()
2218 Buffer const & buf = wa_->bufferView().buffer();
2219 notificationFrame->setHidden(!buf.notifiesExternalModification());
2220 QString const label = qt_("<b>The file %1 changed on disk.</b>")
2221 .arg(toqstr(buf.fileName().displayName()));
2222 externalModificationLabel->setText(label);
2226 void GuiWorkAreaContainer::dispatch(FuncRequest f) const
2228 lyx::dispatch(FuncRequest(LFUN_BUFFER_SWITCH,
2229 wa_->bufferView().buffer().absFileName()));
2234 void GuiWorkAreaContainer::reload() const
2236 dispatch(FuncRequest(LFUN_BUFFER_RELOAD));
2240 void GuiWorkAreaContainer::ignore() const
2242 dispatch(FuncRequest(LFUN_BUFFER_EXTERNAL_MODIFICATION_CLEAR));
2246 void GuiWorkAreaContainer::mouseDoubleClickEvent(QMouseEvent * event)
2248 // prevent TabWorkArea from opening a new buffer on double click
2253 } // namespace frontend
2256 #include "moc_GuiWorkArea.cpp"