2 * \file GuiWorkArea.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
7 * \author Abdelrazak Younes
9 * Full author contact details are available in file CREDITS.
14 #include "GuiWorkArea.h"
15 #include "GuiWorkArea_Private.h"
17 #include "ColorCache.h"
18 #include "FontLoader.h"
19 #include "GuiApplication.h"
20 #include "GuiCompleter.h"
21 #include "GuiKeySymbol.h"
22 #include "GuiPainter.h"
25 #include "qt_helpers.h"
28 #include "BufferList.h"
29 #include "BufferParams.h"
30 #include "BufferView.h"
31 #include "CoordCache.h"
34 #include "FuncRequest.h"
35 #include "KeySymbol.h"
41 #include "TextMetrics.h"
45 #include "graphics/GraphicsImage.h"
46 #include "graphics/GraphicsLoader.h"
48 #include "support/convert.h"
49 #include "support/debug.h"
50 #include "support/lassert.h"
51 #include "support/TempFile.h"
53 #include "frontends/Application.h"
54 #include "frontends/FontMetrics.h"
55 #include "frontends/WorkAreaManager.h"
57 #include <QContextMenuEvent>
58 #if (QT_VERSION < 0x050000)
59 #include <QInputContext>
64 #include <QProxyStyle>
66 #include <QMainWindow>
72 #include <QStyleOption>
73 #include <QStylePainter>
75 #include <QToolButton>
82 int const TabIndicatorWidth = 3;
88 using namespace lyx::support;
93 /// return the LyX mouse button state from Qt's
94 static mouse_button::state q_button_state(Qt::MouseButton button)
96 mouse_button::state b = mouse_button::none;
99 b = mouse_button::button1;
102 b = mouse_button::button2;
104 case Qt::RightButton:
105 b = mouse_button::button3;
114 /// return the LyX mouse button state from Qt's
115 mouse_button::state q_motion_state(Qt::MouseButtons state)
117 mouse_button::state b = mouse_button::none;
118 if (state & Qt::LeftButton)
119 b |= mouse_button::button1;
120 if (state & Qt::MidButton)
121 b |= mouse_button::button2;
122 if (state & Qt::RightButton)
123 b |= mouse_button::button3;
132 CaretWidget() : rtl_(false), l_shape_(false), completable_(false),
133 x_(0), caret_width_(0)
136 /* Draw the caret. Parameter \c horiz_offset is not 0 when there
137 * has been horizontal scrolling in current row
139 void draw(QPainter & painter, int horiz_offset)
141 if (!rect_.isValid())
144 int const x = x_ - horiz_offset;
145 int const y = rect_.top();
146 int const l = x_ - rect_.left();
147 int const r = rect_.right() - x_;
148 int const bot = rect_.bottom();
150 // draw vertical line
151 painter.fillRect(x, y, caret_width_, rect_.height(), color_);
153 // draw RTL/LTR indication
154 painter.setPen(color_);
157 painter.drawLine(x, bot, x - l, bot);
159 painter.drawLine(x, bot, x + caret_width_ + r, bot);
162 // draw completion triangle
164 int m = y + rect_.height() / 2;
165 int d = TabIndicatorWidth - 1;
167 painter.drawLine(x - 1, m - d, x - 1 - d, m);
168 painter.drawLine(x - 1, m + d, x - 1 - d, m);
170 painter.drawLine(x + caret_width_, m - d, x + caret_width_ + d, m);
171 painter.drawLine(x + caret_width_, m + d, x + caret_width_ + d, m);
176 void update(int x, int y, int h, bool l_shape,
177 bool rtl, bool completable)
179 color_ = guiApp->colorCache().get(Color_cursor);
182 completable_ = completable;
185 // extension to left and right
189 // RTL/LTR indication
197 // completion triangle
200 l = max(l, TabIndicatorWidth);
202 r = max(r, TabIndicatorWidth);
205 //FIXME: LyXRC::cursor_width should be caret_width
206 caret_width_ = lyxrc.cursor_width
208 : 1 + int((lyxrc.currentZoom + 50) / 200.0);
210 // compute overall rectangle
211 rect_ = QRect(x - l, y, caret_width_ + r + l, h);
214 QRect const & rect() { return rect_; }
217 /// caret is in RTL or LTR text
219 /// indication for RTL or LTR
221 /// triangle to show that a completion is available
225 /// rectangle, possibly with l_shape and completion triangle
227 /// x position (were the vertical line is drawn)
229 /// the width of the vertical blinking bar
234 // This is a 'heartbeat' generating synthetic mouse move events when the
235 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
236 SyntheticMouseEvent::SyntheticMouseEvent()
237 : timeout(200), restart_timeout(true)
241 GuiWorkArea::Private::Private(GuiWorkArea * parent)
242 : p(parent), buffer_view_(0), lyx_view_(0), caret_(0),
243 caret_visible_(false), need_resize_(false), preedit_lines_(1),
244 last_pixel_ratio_(1.0), completer_(new GuiCompleter(p, p)),
245 dialog_mode_(false), shell_escape_(false), read_only_(false),
246 clean_(true), externally_modified_(false)
248 /* Qt on macOS and Wayland does not respect the
249 * Qt::WA_OpaquePaintEvent attribute and resets the widget backing
250 * store at each update. Therefore, we use our own backing store in
251 * these two cases. */
252 #if QT_VERSION >= 0x050000
253 use_backingstore_ = guiApp->platformName() == "cocoa"
254 || guiApp->platformName().contains("wayland");
257 use_backingstore_ = true;
259 use_backingstore_ = false;
263 int const time = QApplication::cursorFlashTime() / 2;
265 caret_timeout_.setInterval(time);
266 caret_timeout_.start();
268 // let's initialize this just to be safe
269 caret_timeout_.setInterval(500);
274 GuiWorkArea::Private::~Private()
276 // If something is wrong with the buffer, we can ignore it safely
278 buffer_view_->buffer().workAreaManager().remove(p);
282 // Completer has a QObject parent and is thus automatically destroyed.
284 // delete completer_;
288 GuiWorkArea::GuiWorkArea(QWidget * /* w */)
289 : d(new Private(this))
291 new CompressorProxy(this); // not a leak
295 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
296 : d(new Private(this))
298 new CompressorProxy(this); // not a leak
300 buffer.params().display_pixel_ratio = theGuiApp()->pixelRatio();
306 double GuiWorkArea::pixelRatio() const
308 #if QT_VERSION >= 0x050000
309 return qt_scale_factor * devicePixelRatio();
316 void GuiWorkArea::init()
319 connect(&d->caret_timeout_, SIGNAL(timeout()),
320 this, SLOT(toggleCaret()));
322 // This connection is closed at the same time as this is destroyed.
323 d->synthetic_mouse_event_.timeout.timeout.connect([this](){
324 generateSyntheticMouseEvent();
328 // With Qt4.5 a mouse event will happen before the first paint event
329 // so make sure that the buffer view has an up to date metrics.
330 d->buffer_view_->resize(viewport()->width(), viewport()->height());
331 d->caret_ = new frontend::CaretWidget();
333 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
334 setAcceptDrops(true);
335 setMouseTracking(true);
336 setMinimumSize(100, 70);
337 setFrameStyle(QFrame::NoFrame);
340 d->updateCursorShape();
342 // we paint our own background
343 viewport()->setAttribute(Qt::WA_OpaquePaintEvent);
345 setFocusPolicy(Qt::StrongFocus);
347 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
348 << " viewport height: " << viewport()->height());
350 // Enables input methods for asian languages.
351 // Must be set when creating custom text editing widgets.
352 setAttribute(Qt::WA_InputMethodEnabled, true);
356 GuiWorkArea::~GuiWorkArea()
362 void GuiWorkArea::Private::updateCursorShape()
364 bool const clickable = buffer_view_ && buffer_view_->clickableInset();
365 p->viewport()->setCursor(clickable ? Qt::PointingHandCursor
370 void GuiWorkArea::setGuiView(GuiView & gv)
376 void GuiWorkArea::setBuffer(Buffer & buffer)
378 delete d->buffer_view_;
379 d->buffer_view_ = new BufferView(buffer);
380 buffer.workAreaManager().add(this);
382 // HACK: Prevents an additional redraw when the scrollbar pops up
383 // which regularily happens on documents with more than one page.
384 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
385 // Since we have no geometry information yet, we assume that
386 // a document needs a scrollbar if there is more then four
387 // paragraph in the outermost text.
388 if (buffer.text().paragraphs().size() > 4)
389 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
390 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
391 Q_EMIT bufferViewChanged();
395 void GuiWorkArea::fixVerticalScrollBar()
398 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
402 void GuiWorkArea::close()
404 d->lyx_view_->removeWorkArea(this);
408 void GuiWorkArea::setFullScreen(bool full_screen)
410 d->buffer_view_->setFullScreen(full_screen);
411 setFrameStyle(QFrame::NoFrame);
413 setFrameStyle(QFrame::NoFrame);
414 if (lyxrc.full_screen_scrollbar)
415 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
417 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
421 BufferView & GuiWorkArea::bufferView()
423 return *d->buffer_view_;
427 BufferView const & GuiWorkArea::bufferView() const
429 return *d->buffer_view_;
433 void GuiWorkArea::stopBlinkingCaret()
435 d->caret_timeout_.stop();
440 void GuiWorkArea::startBlinkingCaret()
442 // do not show the cursor if the view is busy
446 // we cannot update geometry if not ready and we do not need to if
447 // caret is not in view.
448 if (!d->buffer_view_->buffer().undo().activeUndoGroup()) {
451 d->buffer_view_->caretPosAndHeight(p, h);
452 // Don't start blinking if the cursor isn't on screen.
453 if (!d->buffer_view_->cursorInView(p, h))
459 //we're not supposed to cache this value.
460 int const time = QApplication::cursorFlashTime() / 2;
463 d->caret_timeout_.setInterval(time);
464 d->caret_timeout_.start();
468 void GuiWorkArea::toggleCaret()
470 if (d->caret_visible_)
477 void GuiWorkArea::scheduleRedraw(bool update_metrics)
480 // No need to redraw in this case.
483 // No need to do anything if this is the current view. The BufferView
484 // metrics are already up to date.
485 if (update_metrics || d->lyx_view_ != guiApp->currentView()
486 || d->lyx_view_->currentWorkArea() != this) {
487 // FIXME: it would be nice to optimize for the off-screen case.
488 d->buffer_view_->cursor().fixIfBroken();
489 d->buffer_view_->updateMetrics();
490 d->buffer_view_->cursor().fixIfBroken();
493 // update caret position, because otherwise it has to wait until
494 // the blinking interval is over
495 d->updateCaretGeometry();
497 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
498 viewport()->update();
500 /// FIXME: is this still true now that paintEvent does the actual painting?
501 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
502 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
503 d->updateScrollbar();
504 d->lyx_view_->updateStatusBar();
506 if (lyxerr.debugging(Debug::WORKAREA))
507 d->buffer_view_->coordCache().dump();
511 d->updateCursorShape();
515 // Keep in sync with GuiWorkArea::processKeySym below
516 bool GuiWorkArea::queryKeySym(KeySymbol const & key, KeyModifier mod) const
518 return guiApp->queryKeySym(key, mod);
522 // Keep in sync with GuiWorkArea::queryKeySym above
523 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
525 if (d->lyx_view_->isFullScreen() && d->lyx_view_->menuBar()->isVisible()
526 && lyxrc.full_screen_menubar) {
527 // FIXME HACK: we should not have to do this here. See related comment
528 // in GuiView::event() (QEvent::ShortcutOverride)
529 d->lyx_view_->menuBar()->hide();
532 // In order to avoid bad surprise in the middle of an operation,
533 // we better stop the blinking caret...
534 // the caret gets restarted in GuiView::restartCaret()
536 guiApp->processKeySym(key, mod);
540 void GuiWorkArea::Private::dispatch(FuncRequest const & cmd)
543 if (cmd.action() == LFUN_FILE_OPEN) {
545 lyx_view_->dispatch(cmd, dr);
549 bool const notJustMovingTheMouse =
550 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
552 // In order to avoid bad surprise in the middle of an operation, we better stop
553 // the blinking caret.
554 if (notJustMovingTheMouse)
555 p->stopBlinkingCaret();
557 buffer_view_->mouseEventDispatch(cmd);
559 // Skip these when selecting
560 // FIXME: let GuiView take care of those.
561 if (cmd.action() != LFUN_MOUSE_MOTION) {
562 completer_->updateVisibility(false, false);
563 lyx_view_->updateDialogs();
564 lyx_view_->updateStatusBar();
567 // GUI tweaks except with mouse motion with no button pressed.
568 if (notJustMovingTheMouse) {
569 // Slight hack: this is only called currently when we
570 // clicked somewhere, so we force through the display
571 // of the new status here.
572 // FIXME: let GuiView take care of those.
573 lyx_view_->clearMessage();
575 // Show the caret immediately after any operation
576 p->startBlinkingCaret();
583 void GuiWorkArea::Private::resizeBufferView()
585 // WARNING: Please don't put any code that will trigger a repaint here!
586 // We are already inside a paint event.
587 p->stopBlinkingCaret();
588 // Warn our container (GuiView).
593 buffer_view_->caretPosAndHeight(point, h);
594 bool const caret_in_view = buffer_view_->cursorInView(point, h);
595 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
597 buffer_view_->scrollToCursor();
598 updateCaretGeometry();
600 // Update scrollbars which might have changed due different
601 // BufferView dimension. This is especially important when the
602 // BufferView goes from zero-size to the real-size for the first time,
603 // as the scrollbar paramters are then set for the first time.
606 need_resize_ = false;
608 // Eventually, restart the caret after the resize event.
609 // We might be resizing even if the focus is on another widget so we only
610 // restart the caret if we have the focus.
612 QTimer::singleShot(50, p, SLOT(startBlinkingCaret()));
616 void GuiWorkArea::Private::updateCaretGeometry()
618 // we cannot update geometry if not ready and we do not need to if
619 // caret is not in view.
620 if (buffer_view_->buffer().undo().activeUndoGroup())
625 buffer_view_->caretPosAndHeight(point, h);
626 if (!buffer_view_->cursorInView(point, h))
630 bool l_shape = false;
631 Font const & realfont = buffer_view_->cursor().real_current_font;
632 BufferParams const & bp = buffer_view_->buffer().params();
633 bool const samelang = realfont.language() == bp.language;
634 bool const isrtl = realfont.isVisibleRightToLeft();
636 if (!samelang || isrtl != bp.language->rightToLeft())
639 // The ERT language hack needs fixing up
640 if (realfont.language() == latex_language)
643 // show caret on screen
644 Cursor & cur = buffer_view_->cursor();
645 bool completable = cur.inset().showCompletionCursor()
646 && completer_->completionAvailable()
647 && !completer_->popupVisible()
648 && !completer_->inlineVisible();
649 caret_visible_ = true;
651 caret_->update(point.x_, point.y_, h, l_shape, isrtl, completable);
655 void GuiWorkArea::Private::showCaret()
660 updateCaretGeometry();
661 p->viewport()->update();
665 void GuiWorkArea::Private::hideCaret()
670 caret_visible_ = false;
671 //if (!qApp->focusWidget())
672 p->viewport()->update();
676 void GuiWorkArea::Private::updateScrollbar()
678 // Prevent setRange() and setSliderPosition from causing recursive calls via
679 // the signal valueChanged. (#10311)
680 QObject::disconnect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
681 p, SLOT(scrollTo(int)));
682 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
683 p->verticalScrollBar()->setRange(scroll_.min, scroll_.max);
684 p->verticalScrollBar()->setPageStep(scroll_.page_step);
685 p->verticalScrollBar()->setSingleStep(scroll_.single_step);
686 p->verticalScrollBar()->setSliderPosition(0);
687 // Connect to the vertical scroll bar
688 QObject::connect(p->verticalScrollBar(), SIGNAL(valueChanged(int)),
689 p, SLOT(scrollTo(int)));
693 void GuiWorkArea::scrollTo(int value)
696 d->buffer_view_->scrollDocView(value, true);
698 if (lyxrc.cursor_follows_scrollbar) {
699 d->buffer_view_->setCursorFromScrollbar();
700 // FIXME: let GuiView take care of those.
701 d->lyx_view_->updateLayoutList();
703 // Show the caret immediately after any operation.
704 startBlinkingCaret();
707 QApplication::syncX();
712 bool GuiWorkArea::event(QEvent * e)
715 case QEvent::ToolTip: {
716 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
717 if (lyxrc.use_tooltip) {
718 QPoint pos = helpEvent->pos();
719 if (pos.x() < viewport()->width()) {
720 QString s = toqstr(d->buffer_view_->toolTip(pos.x(), pos.y()));
721 QToolTip::showText(helpEvent->globalPos(), formatToolTip(s,35));
724 QToolTip::hideText();
726 // Don't forget to accept the event!
731 case QEvent::ShortcutOverride:
732 // keyPressEvent is ShortcutOverride-aware and only accepts the event in
734 keyPressEvent(static_cast<QKeyEvent *>(e));
735 return e->isAccepted();
737 case QEvent::KeyPress: {
738 // We catch this event in order to catch the Tab or Shift+Tab key press
739 // which are otherwise reserved to focus switching between controls
741 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
742 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
743 || (ke->key() == Qt::Key_Backtab && (
744 ke->modifiers() == Qt::ShiftModifier
745 || ke->modifiers() == Qt::NoModifier))) {
749 return QAbstractScrollArea::event(e);
753 return QAbstractScrollArea::event(e);
759 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
762 if (e->reason() == QContextMenuEvent::Mouse)
763 // the menu name is set on mouse press
764 name = d->context_menu_name_;
766 QPoint pos = e->pos();
767 Cursor const & cur = d->buffer_view_->cursor();
768 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
769 // Do not access the context menu of math right in front of before
770 // the cursor. This does not work when the cursor is in text.
771 Inset * inset = cur.paragraph().getInset(cur.pos());
772 if (inset && inset->asInsetMath())
774 else if (cur.pos() > 0) {
775 Inset * inset = cur.paragraph().getInset(cur.pos() - 1);
780 name = d->buffer_view_->contextMenu(pos.x(), pos.y());
787 // always show mnemonics when the keyboard is used to show the context menu
788 // FIXME: This should be fixed in Qt itself
789 bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
790 QMenu * menu = guiApp->menus().menu(toqstr(name), *d->lyx_view_, keyboard);
795 // Position the menu to the right.
796 // FIXME: menu position should be different for RTL text.
797 menu->exec(e->globalPos());
802 void GuiWorkArea::focusInEvent(QFocusEvent * e)
804 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
805 if (d->lyx_view_->currentWorkArea() != this) {
806 d->lyx_view_->setCurrentWorkArea(this);
807 d->lyx_view_->currentWorkArea()->bufferView().buffer().updateBuffer();
810 startBlinkingCaret();
811 QAbstractScrollArea::focusInEvent(e);
815 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
817 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
819 QAbstractScrollArea::focusOutEvent(e);
823 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
825 if (d->dc_event_.active && d->dc_event_ == *e) {
826 d->dc_event_.active = false;
827 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
828 q_button_state(e->button()), q_key_state(e->modifiers()));
834 #if (QT_VERSION < 0x050000) && !defined(__HAIKU__)
835 inputContext()->reset();
838 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
839 q_button_state(e->button()), q_key_state(e->modifiers()));
842 // Save the context menu on mouse press, because also the mouse
843 // cursor is set on mouse press. Afterwards, we can either release
844 // the mousebutton somewhere else, or the cursor might have moved
845 // due to the DEPM. We need to do this after the mouse has been
846 // set in dispatch(), because the selection state might change.
847 if (e->button() == Qt::RightButton)
848 d->context_menu_name_ = d->buffer_view_->contextMenu(e->x(), e->y());
854 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
856 if (d->synthetic_mouse_event_.timeout.running())
857 d->synthetic_mouse_event_.timeout.stop();
859 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
860 q_button_state(e->button()), q_key_state(e->modifiers()));
866 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
868 // we kill the triple click if we move
869 doubleClickTimeout();
870 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
871 q_motion_state(e->buttons()), q_key_state(e->modifiers()));
875 // If we're above or below the work area...
876 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
877 && e->buttons() == mouse_button::button1) {
878 // Make sure only a synthetic event can cause a page scroll,
879 // so they come at a steady rate:
881 // _Force_ a scroll up:
882 cmd.set_y(e->y() - 21);
884 cmd.set_y(e->y() + 21);
885 // Store the event, to be handled when the timeout expires.
886 d->synthetic_mouse_event_.cmd = cmd;
888 if (d->synthetic_mouse_event_.timeout.running()) {
889 // Discard the event. Note that it _may_ be handled
890 // when the timeout expires if
891 // synthetic_mouse_event_.cmd has not been overwritten.
892 // Ie, when the timeout expires, we handle the
893 // most recent event but discard all others that
894 // occurred after the one used to start the timeout
895 // in the first place.
899 d->synthetic_mouse_event_.restart_timeout = true;
900 d->synthetic_mouse_event_.timeout.start();
901 // Fall through to handle this event...
903 } else if (d->synthetic_mouse_event_.timeout.running()) {
904 // Store the event, to be possibly handled when the timeout
906 // Once the timeout has expired, normal control is returned
907 // to mouseMoveEvent (restart_timeout = false).
908 // This results in a much smoother 'feel' when moving the
909 // mouse back into the work area.
910 d->synthetic_mouse_event_.cmd = cmd;
911 d->synthetic_mouse_event_.restart_timeout = false;
918 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
920 // Wheel rotation by one notch results in a delta() of 120 (see
921 // documentation of QWheelEvent)
922 // But first we have to ignore horizontal scroll events.
923 #if QT_VERSION < 0x050000
924 if (ev->orientation() == Qt::Horizontal) {
928 double const delta = ev->delta() / 120.0;
930 QPoint const aDelta = ev->angleDelta();
931 // skip horizontal wheel event
932 if (abs(aDelta.x()) > abs(aDelta.y())) {
936 double const delta = aDelta.y() / 120.0;
940 switch (lyxrc.scroll_wheel_zoom) {
941 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
942 zoom = ev->modifiers() & Qt::ControlModifier;
943 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
945 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
946 zoom = ev->modifiers() & Qt::ShiftModifier;
947 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
949 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
950 zoom = ev->modifiers() & Qt::AltModifier;
951 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
953 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
957 docstring arg = convert<docstring>(int(5 * delta));
958 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
962 // Take into account the desktop wide settings.
963 int const lines = qApp->wheelScrollLines();
964 int const page_step = verticalScrollBar()->pageStep();
965 // Test if the wheel mouse is set to one screen at a time.
966 // This is according to
967 // https://doc.qt.io/qt-5/qapplication.html#wheelScrollLines-prop
969 min(lines * verticalScrollBar()->singleStep(), page_step);
971 // Take into account the rotation and the user preferences.
972 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
973 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
974 << " delta = " << delta << " scroll_value = " << scroll_value
975 << " page_step = " << page_step);
977 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
983 void GuiWorkArea::generateSyntheticMouseEvent()
985 int const e_y = d->synthetic_mouse_event_.cmd.y();
986 int const wh = d->buffer_view_->workHeight();
987 bool const up = e_y < 0;
988 bool const down = e_y > wh;
990 // Set things off to generate the _next_ 'pseudo' event.
992 if (d->synthetic_mouse_event_.restart_timeout) {
993 // This is some magic formulae to determine the speed
994 // of scrolling related to the position of the mouse.
997 int dist = up ? -e_y : e_y - wh;
998 time = max(min(200, 250000 / (dist * dist)), 1) ;
1001 step = 80000 / (time * time);
1005 d->synthetic_mouse_event_.timeout.setTimeout(time);
1006 d->synthetic_mouse_event_.timeout.start();
1009 // Can we scroll further ?
1010 int const value = verticalScrollBar()->value();
1011 if (value == verticalScrollBar()->maximum()
1012 || value == verticalScrollBar()->minimum()) {
1013 d->synthetic_mouse_event_.timeout.stop();
1018 if (step <= 2 * wh) {
1019 d->buffer_view_->scroll(up ? -step : step);
1020 d->buffer_view_->updateMetrics();
1022 d->buffer_view_->scrollDocView(value + (up ? -step : step), false);
1025 // In which paragraph do we have to set the cursor ?
1026 Cursor & cur = d->buffer_view_->cursor();
1027 // FIXME: we don't know how to handle math.
1028 Text * text = cur.text();
1031 TextMetrics const & tm = d->buffer_view_->textMetrics(text);
1033 // Quit gracefully if there are no metrics, since otherwise next
1034 // line would crash (bug #10324).
1035 // This situation seems related to a (not yet understood) timing problem.
1039 pair<pit_type, const ParagraphMetrics *> pp = up ? tm.first() : tm.last();
1040 ParagraphMetrics const & pm = *pp.second;
1041 pit_type const pit = pp.first;
1043 if (pm.rows().empty())
1046 // Find the row at which we set the cursor.
1047 RowList::const_iterator rit = pm.rows().begin();
1048 RowList::const_iterator rlast = pm.rows().end();
1049 int yy = pm.position() - pm.ascent();
1050 for (--rlast; rit != rlast; ++rit) {
1051 int h = rit->height();
1052 if ((up && yy + h > 0)
1053 || (!up && yy + h > wh - defaultRowHeight()))
1058 // Find the position of the cursor
1060 int x = d->synthetic_mouse_event_.cmd.x();
1061 pos_type const pos = tm.getPosNearX(*rit, x, bound);
1066 cur.boundary(bound);
1068 d->buffer_view_->buffer().changed(false);
1073 // CompressorProxy adapted from Kuba Ober https://stackoverflow.com/a/21006207
1074 CompressorProxy::CompressorProxy(GuiWorkArea * wa) : QObject(wa), flag_(false)
1076 qRegisterMetaType<KeySymbol>("KeySymbol");
1077 qRegisterMetaType<KeyModifier>("KeyModifier");
1078 connect(wa, SIGNAL(compressKeySym(KeySymbol, KeyModifier, bool)),
1079 this, SLOT(slot(KeySymbol, KeyModifier, bool)),
1080 Qt::QueuedConnection);
1081 connect(this, SIGNAL(signal(KeySymbol, KeyModifier)),
1082 wa, SLOT(processKeySym(KeySymbol, KeyModifier)));
1086 bool CompressorProxy::emitCheck(bool isAutoRepeat)
1090 QCoreApplication::sendPostedEvents(this, QEvent::MetaCall); // recurse
1091 bool result = flag_;
1097 void CompressorProxy::slot(KeySymbol sym, KeyModifier mod, bool isAutoRepeat)
1099 if (emitCheck(isAutoRepeat))
1100 Q_EMIT signal(sym, mod);
1102 LYXERR(Debug::KEY, "system is busy: autoRepeat key event ignored");
1106 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
1108 // this is also called for ShortcutOverride events. In this case, one must
1109 // not act but simply accept the event explicitly.
1110 bool const act = (ev->type() != QEvent::ShortcutOverride);
1112 // Do not process here some keys if dialog_mode_ is set
1113 bool const for_dialog_mode = d->dialog_mode_
1114 && (ev->modifiers() == Qt::NoModifier
1115 || ev->modifiers() == Qt::ShiftModifier)
1116 && (ev->key() == Qt::Key_Escape
1117 || ev->key() == Qt::Key_Enter
1118 || ev->key() == Qt::Key_Return);
1119 // also do not use autoRepeat to input shortcuts
1120 bool const autoRepeat = ev->isAutoRepeat();
1122 if (for_dialog_mode || (!act && autoRepeat)) {
1127 // intercept some keys if completion popup is visible
1128 if (d->completer_->popupVisible()) {
1129 switch (ev->key()) {
1131 case Qt::Key_Return:
1133 d->completer_->activate();
1139 KeyModifier const m = q_key_state(ev->modifiers());
1141 if (act && lyxerr.debugging(Debug::KEY)) {
1143 if (m & ShiftModifier)
1145 if (m & ControlModifier)
1147 if (m & AltModifier)
1149 if (m & MetaModifier)
1151 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1152 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
1153 << " keyState: " << str);
1157 setKeySymbol(&sym, ev);
1160 Q_EMIT compressKeySym(sym, m, autoRepeat);
1163 // here, !autoRepeat, as determined at the beginning
1164 ev->setAccepted(queryKeySym(sym, m));
1171 void GuiWorkArea::doubleClickTimeout()
1173 d->dc_event_.active = false;
1177 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1179 d->dc_event_ = DoubleClick(ev);
1180 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1181 SLOT(doubleClickTimeout()));
1182 FuncRequest cmd(LFUN_MOUSE_DOUBLE, ev->x(), ev->y(),
1183 q_button_state(ev->button()), q_key_state(ev->modifiers()));
1189 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1191 QAbstractScrollArea::resizeEvent(ev);
1192 d->need_resize_ = true;
1197 void GuiWorkArea::Private::paintPreeditText(GuiPainter & pain)
1199 if (preedit_string_.empty())
1202 // FIXME: shall we use real_current_font here? (see #10478)
1203 FontInfo const font = buffer_view_->cursor().getFont().fontInfo();
1204 FontMetrics const & fm = theFontMetrics(font);
1205 int const height = fm.maxHeight();
1206 int cur_x = caret_->rect().left();
1207 int cur_y = caret_->rect().bottom();
1209 // get attributes of input method cursor.
1210 // cursor_pos : cursor position in preedit string.
1211 size_t cursor_pos = 0;
1212 bool cursor_is_visible = false;
1213 for (auto const & attr : preedit_attr_) {
1214 if (attr.type == QInputMethodEvent::Cursor) {
1215 cursor_pos = attr.start;
1216 cursor_is_visible = attr.length != 0;
1221 size_t const preedit_length = preedit_string_.length();
1223 // get position of selection in input method.
1224 // FIXME: isn't there a way to do this simplier?
1225 // rStart : cursor position in selected string in IM.
1227 // rLength : selected string length in IM.
1229 if (cursor_pos < preedit_length) {
1230 for (auto const & attr : preedit_attr_) {
1231 if (attr.type == QInputMethodEvent::TextFormat) {
1232 if (attr.start <= int(cursor_pos)
1233 && int(cursor_pos) < attr.start + attr.length) {
1234 rStart = attr.start;
1235 rLength = attr.length;
1236 if (!cursor_is_visible)
1237 cursor_pos += rLength;
1244 rStart = cursor_pos;
1248 int const right_margin = buffer_view_->rightMargin();
1249 Painter::preedit_style ps;
1250 // Most often there would be only one line:
1252 for (size_t pos = 0; pos != preedit_length; ++pos) {
1253 char_type const typed_char = preedit_string_[pos];
1254 // reset preedit string style
1255 ps = Painter::preedit_default;
1257 // if we reached the right extremity of the screen, go to next line.
1258 if (cur_x + fm.width(typed_char) > p->viewport()->width() - right_margin) {
1259 cur_x = right_margin;
1260 cur_y += height + 1;
1263 // preedit strings are displayed with dashed underline
1264 // and partial strings are displayed white on black indicating
1265 // that we are in selecting mode in the input method.
1266 // FIXME: rLength == preedit_length is not a changing condition
1267 // FIXME: should be put out of the loop.
1269 && pos < rStart + rLength
1270 && !(cursor_pos < rLength && rLength == preedit_length))
1271 ps = Painter::preedit_selecting;
1273 if (pos == cursor_pos
1274 && (cursor_pos < rLength && rLength == preedit_length))
1275 ps = Painter::preedit_cursor;
1277 // draw one character and update cur_x.
1278 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1283 void GuiWorkArea::Private::resetScreen()
1285 if (use_backingstore_) {
1286 int const pr = p->pixelRatio();
1287 screen_ = QImage(static_cast<int>(pr * p->viewport()->width()),
1288 static_cast<int>(pr * p->viewport()->height()),
1289 QImage::Format_ARGB32_Premultiplied);
1290 # if QT_VERSION >= 0x050000
1291 screen_.setDevicePixelRatio(pr);
1297 QPaintDevice * GuiWorkArea::Private::screenDevice()
1299 if (use_backingstore_)
1302 return p->viewport();
1306 void GuiWorkArea::Private::updateScreen(QRectF const & rc)
1308 if (use_backingstore_) {
1309 QPainter qpain(p->viewport());
1310 double const pr = p->pixelRatio();
1311 QRectF const rcs = QRectF(rc.x() * pr, rc.y() * pr,
1312 rc.width() * pr, rc.height() * pr);
1313 qpain.drawImage(rc, screen_, rcs);
1318 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1320 // Do not trigger the painting machinery if we are not ready (see
1321 // bug #10989). The second test triggers when in the middle of a
1322 // dispatch operation.
1323 if (view().busy() || d->buffer_view_->buffer().undo().activeUndoGroup()) {
1324 // Since macOS has turned the screen black at this point, our
1325 // backing store has to be copied to screen (this is a no-op
1326 // except on macOS).
1327 d->updateScreen(ev->rect());
1328 // Ignore this paint event, but request a new one for later.
1329 viewport()->update(ev->rect());
1334 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1335 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1337 if (d->need_resize_ || pixelRatio() != d->last_pixel_ratio_) {
1339 d->resizeBufferView();
1342 d->last_pixel_ratio_ = pixelRatio();
1344 GuiPainter pain(d->screenDevice(), pixelRatio());
1346 d->buffer_view_->draw(pain, d->caret_visible_);
1348 // The preedit text, if needed
1349 d->paintPreeditText(pain);
1352 if (d->caret_visible_)
1353 d->caret_->draw(pain, d->buffer_view_->horizScrollOffset());
1355 d->updateScreen(ev->rect());
1361 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1363 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1364 << " commitString: " << e->commitString());
1366 // insert the processed text in the document (handles undo)
1367 if (!e->commitString().isEmpty()) {
1368 FuncRequest cmd(LFUN_SELF_INSERT,
1369 qstring_to_ucs4(e->commitString()),
1370 FuncRequest::KEYBOARD);
1372 // FIXME: this is supposed to remove traces from preedit
1373 // string. Can we avoid calling it explicitely?
1374 d->buffer_view_->updateMetrics();
1377 // Hide the caret during the test transformation.
1378 if (e->preeditString().isEmpty())
1379 startBlinkingCaret();
1381 stopBlinkingCaret();
1383 if (d->preedit_string_.empty() && e->preeditString().isEmpty()) {
1389 // The preedit text and its attributes will be used in paintPreeditText
1390 d->preedit_string_ = qstring_to_ucs4(e->preeditString());
1391 d->preedit_attr_ = e->attributes();
1394 // redraw area of preedit string.
1395 int height = d->caret_->rect().height();
1396 int cur_y = d->caret_->rect().bottom();
1397 viewport()->update(0, cur_y - height, viewport()->width(),
1398 (height + 1) * d->preedit_lines_);
1400 if (d->preedit_string_.empty()) {
1401 d->preedit_lines_ = 1;
1406 // Don't forget to accept the event!
1411 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1413 QRect cur_r(0, 0, 0, 0);
1415 // this is the CJK-specific composition window position and
1416 // the context menu position when the menu key is pressed.
1417 case Qt::ImMicroFocus:
1418 cur_r = d->caret_->rect();
1419 if (d->preedit_lines_ != 1)
1421 cur_r.moveBottom(cur_r.bottom()
1422 + cur_r.height() * (d->preedit_lines_ - 1));
1423 // return lower right of caret in LyX.
1426 return QWidget::inputMethodQuery(query);
1431 void GuiWorkArea::updateWindowTitle()
1433 Buffer const & buf = bufferView().buffer();
1434 if (buf.fileName() != d->file_name_
1435 || buf.params().shell_escape != d->shell_escape_
1436 || buf.hasReadonlyFlag() != d->read_only_
1437 || buf.lyxvc().vcstatus() != d->vc_status_
1438 || buf.isClean() != d->clean_
1439 || buf.notifiesExternalModification() != d->externally_modified_) {
1440 d->file_name_ = buf.fileName();
1441 d->shell_escape_ = buf.params().shell_escape;
1442 d->read_only_ = buf.hasReadonlyFlag();
1443 d->vc_status_ = buf.lyxvc().vcstatus();
1444 d->clean_ = buf.isClean();
1445 d->externally_modified_ = buf.notifiesExternalModification();
1446 Q_EMIT titleChanged(this);
1451 bool GuiWorkArea::isFullScreen() const
1453 return d->lyx_view_ && d->lyx_view_->isFullScreen();
1457 bool GuiWorkArea::inDialogMode() const
1459 return d->dialog_mode_;
1463 void GuiWorkArea::setDialogMode(bool mode)
1465 d->dialog_mode_ = mode;
1469 GuiCompleter & GuiWorkArea::completer()
1471 return *d->completer_;
1474 GuiView const & GuiWorkArea::view() const
1476 return *d->lyx_view_;
1480 GuiView & GuiWorkArea::view()
1482 return *d->lyx_view_;
1485 ////////////////////////////////////////////////////////////////////
1489 ////////////////////////////////////////////////////////////////////
1492 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1494 support::TempFile tempfile("embedded.internal");
1495 tempfile.setAutoRemove(false);
1496 buffer_ = theBufferList().newInternalBuffer(tempfile.name().absFileName());
1497 buffer_->setUnnamed(true);
1498 buffer_->setFullyLoaded(true);
1499 setBuffer(*buffer_);
1500 setDialogMode(true);
1504 EmbeddedWorkArea::~EmbeddedWorkArea()
1506 // No need to destroy buffer and bufferview here, because it is done
1507 // in theBufferList() destruction loop at application exit
1511 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1514 GuiWorkArea::closeEvent(ev);
1518 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1521 GuiWorkArea::hideEvent(ev);
1525 QSize EmbeddedWorkArea::sizeHint () const
1528 // GuiWorkArea sets the size to the screen's viewport
1529 // by returning a value this gets overridden
1530 // EmbeddedWorkArea is now sized to fit in the layout
1531 // of the parent, and has a minimum size set in GuiWorkArea
1532 // which is what we return here
1533 return QSize(100, 70);
1537 void EmbeddedWorkArea::disable()
1539 stopBlinkingCaret();
1540 if (view().currentWorkArea() != this)
1542 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1543 // tolerates it and shows the background logo), what happens if
1544 // an EmbeddedWorkArea is closed after closing all document WAs
1545 view().setCurrentWorkArea(view().currentMainWorkArea());
1548 ////////////////////////////////////////////////////////////////////
1552 ////////////////////////////////////////////////////////////////////
1555 class NoTabFrameMacStyle : public QProxyStyle {
1558 QRect subElementRect(SubElement element, const QStyleOption * option,
1559 const QWidget * widget = 0) const
1561 QRect rect = QProxyStyle::subElementRect(element, option, widget);
1562 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1564 // The Qt Mac style puts the contents into a 3 pixel wide box
1565 // which looks very ugly and not like other Mac applications.
1566 // Hence we remove this here, and moreover the 16 pixel round
1567 // frame above if the tab bar is hidden.
1568 if (element == QStyle::SE_TabWidgetTabContents) {
1569 rect.adjust(- rect.left(), 0, rect.left(), 0);
1578 NoTabFrameMacStyle noTabFrameMacStyle;
1582 TabWorkArea::TabWorkArea(QWidget * parent)
1583 : QTabWidget(parent), clicked_tab_(-1), midpressed_tab_(-1)
1586 setStyle(&noTabFrameMacStyle);
1589 QPalette pal = palette();
1590 pal.setColor(QPalette::Active, QPalette::Button,
1591 pal.color(QPalette::Active, QPalette::Window));
1592 pal.setColor(QPalette::Disabled, QPalette::Button,
1593 pal.color(QPalette::Disabled, QPalette::Window));
1594 pal.setColor(QPalette::Inactive, QPalette::Button,
1595 pal.color(QPalette::Inactive, QPalette::Window));
1597 QObject::connect(this, SIGNAL(currentChanged(int)),
1598 this, SLOT(on_currentTabChanged(int)));
1600 closeBufferButton = new QToolButton(this);
1601 closeBufferButton->setPalette(pal);
1602 // FIXME: rename the icon to closebuffer.png
1603 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "svgz,png")));
1604 closeBufferButton->setText("Close File");
1605 closeBufferButton->setAutoRaise(true);
1606 closeBufferButton->setCursor(Qt::ArrowCursor);
1607 closeBufferButton->setToolTip(qt_("Close File"));
1608 closeBufferButton->setEnabled(true);
1609 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1610 this, SLOT(closeCurrentBuffer()));
1611 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1613 // set TabBar behaviour
1614 QTabBar * tb = tabBar();
1615 tb->setTabsClosable(!lyxrc.single_close_tab_button);
1616 tb->setSelectionBehaviorOnRemove(QTabBar::SelectPreviousTab);
1617 tb->setElideMode(Qt::ElideNone);
1618 // allow dragging tabs
1619 tb->setMovable(true);
1620 // make us responsible for the context menu of the tabbar
1621 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1622 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1623 this, SLOT(showContextMenu(const QPoint &)));
1624 connect(tb, SIGNAL(tabCloseRequested(int)),
1625 this, SLOT(closeTab(int)));
1627 setUsesScrollButtons(true);
1631 void TabWorkArea::mousePressEvent(QMouseEvent *me)
1633 if (me->button() == Qt::MidButton)
1634 midpressed_tab_ = tabBar()->tabAt(me->pos());
1636 QTabWidget::mousePressEvent(me);
1640 void TabWorkArea::mouseReleaseEvent(QMouseEvent *me)
1642 if (me->button() == Qt::MidButton) {
1643 int const midreleased_tab = tabBar()->tabAt(me->pos());
1644 if (midpressed_tab_ == midreleased_tab && posIsTab(me->pos()))
1645 closeTab(midreleased_tab);
1647 QTabWidget::mouseReleaseEvent(me);
1651 void TabWorkArea::paintEvent(QPaintEvent * event)
1653 if (tabBar()->isVisible()) {
1654 QTabWidget::paintEvent(event);
1656 // Prevent the selected tab to influence the
1657 // painting of the frame of the tab widget.
1658 // This is needed for gtk style in Qt.
1659 QStylePainter p(this);
1660 #if QT_VERSION < 0x050000
1661 QStyleOptionTabWidgetFrameV2 opt;
1663 QStyleOptionTabWidgetFrame opt;
1665 initStyleOption(&opt);
1666 opt.rect = style()->subElementRect(QStyle::SE_TabWidgetTabPane,
1668 opt.selectedTabRect = QRect();
1669 p.drawPrimitive(QStyle::PE_FrameTabWidget, opt);
1674 bool TabWorkArea::posIsTab(QPoint position)
1676 // tabAt returns -1 if tab does not covers position
1677 return tabBar()->tabAt(position) > -1;
1681 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1683 if (event->button() != Qt::LeftButton)
1686 // this code chunk is unnecessary because it seems the event only makes
1687 // it this far if it is not on a tab. I'm not sure why this is (maybe
1688 // it is handled and ended in DragTabBar?), and thus I'm not sure if
1689 // this is true in all cases and if it will be true in the future so I
1690 // leave this code for now. (skostysh, 2016-07-21)
1692 // return early if double click on existing tabs
1693 if (posIsTab(event->pos()))
1696 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1700 void TabWorkArea::setFullScreen(bool full_screen)
1702 for (int i = 0; i != count(); ++i) {
1703 if (GuiWorkArea * wa = workArea(i))
1704 wa->setFullScreen(full_screen);
1707 if (lyxrc.full_screen_tabbar)
1708 showBar(!full_screen && count() > 1);
1710 showBar(count() > 1);
1714 void TabWorkArea::showBar(bool show)
1716 tabBar()->setEnabled(show);
1717 tabBar()->setVisible(show);
1718 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1719 setTabsClosable(!lyxrc.single_close_tab_button);
1723 GuiWorkAreaContainer * TabWorkArea::widget(int index) const
1725 QWidget * w = QTabWidget::widget(index);
1728 GuiWorkAreaContainer * wac = dynamic_cast<GuiWorkAreaContainer *>(w);
1734 GuiWorkAreaContainer * TabWorkArea::currentWidget() const
1736 return widget(currentIndex());
1740 GuiWorkArea * TabWorkArea::workArea(int index) const
1742 GuiWorkAreaContainer * w = widget(index);
1745 return w->workArea();
1749 GuiWorkArea * TabWorkArea::currentWorkArea() const
1751 return workArea(currentIndex());
1755 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer) const
1757 // FIXME: this method doesn't work if we have more than one work area
1758 // showing the same buffer.
1759 for (int i = 0; i != count(); ++i) {
1760 GuiWorkArea * wa = workArea(i);
1761 LASSERT(wa, return 0);
1762 if (&wa->bufferView().buffer() == &buffer)
1769 void TabWorkArea::closeAll()
1772 QWidget * wac = widget(0);
1773 LASSERT(wac, return);
1780 int TabWorkArea::indexOfWorkArea(GuiWorkArea * w) const
1782 for (int index = 0; index < count(); ++index)
1783 if (workArea(index) == w)
1789 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1791 LASSERT(work_area, return false);
1792 int index = indexOfWorkArea(work_area);
1796 if (index == currentIndex())
1797 // Make sure the work area is up to date.
1798 on_currentTabChanged(index);
1800 // Switch to the work area.
1801 setCurrentIndex(index);
1802 work_area->setFocus();
1808 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1810 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1811 GuiWorkAreaContainer * wac = new GuiWorkAreaContainer(wa);
1812 wa->setUpdatesEnabled(false);
1813 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1814 // when hiding it again below).
1815 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1816 showBar(count() > 0);
1817 addTab(wac, wa->windowTitle());
1818 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1819 this, SLOT(updateTabTexts()));
1820 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1821 setFullScreen(true);
1823 // Hide tabbar if there's only one tab.
1824 showBar(count() > 1);
1832 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1834 LASSERT(work_area, return false);
1835 int index = indexOfWorkArea(work_area);
1839 work_area->setUpdatesEnabled(false);
1840 QWidget * wac = widget(index);
1845 // make sure the next work area is enabled.
1846 currentWidget()->setUpdatesEnabled(true);
1847 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1848 setFullScreen(true);
1850 // Show tabbar only if there's more than one tab.
1851 showBar(count() > 1);
1853 lastWorkAreaRemoved();
1861 void TabWorkArea::on_currentTabChanged(int i)
1863 // returns e.g. on application destruction
1866 GuiWorkArea * wa = workArea(i);
1867 LASSERT(wa, return);
1868 wa->setUpdatesEnabled(true);
1869 wa->scheduleRedraw(true);
1872 currentWorkAreaChanged(wa);
1874 LYXERR(Debug::GUI, "currentTabChanged " << i
1875 << " File: " << wa->bufferView().buffer().absFileName());
1879 void TabWorkArea::closeCurrentBuffer()
1882 if (clicked_tab_ == -1)
1883 wa = currentWorkArea();
1885 wa = workArea(clicked_tab_);
1886 LASSERT(wa, return);
1888 wa->view().closeWorkArea(wa);
1892 void TabWorkArea::hideCurrentTab()
1895 if (clicked_tab_ == -1)
1896 wa = currentWorkArea();
1898 wa = workArea(clicked_tab_);
1899 LASSERT(wa, return);
1901 wa->view().hideWorkArea(wa);
1905 void TabWorkArea::closeTab(int index)
1907 on_currentTabChanged(index);
1910 wa = currentWorkArea();
1912 wa = workArea(index);
1913 LASSERT(wa, return);
1915 wa->view().closeWorkArea(wa);
1922 /// make vector happy
1923 DisplayPath() : tab_(-1), dottedPrefix_(false) {}
1925 DisplayPath(int tab, FileName const & filename)
1928 filename_ = (filename.extension() == "lyx") ?
1929 toqstr(filename.onlyFileNameWithoutExt())
1930 : toqstr(filename.onlyFileName());
1931 postfix_ = toqstr(filename.absoluteFilePath()).
1932 split("/", QString::SkipEmptyParts);
1933 postfix_.pop_back();
1934 abs_ = toqstr(filename.absoluteFilePath());
1935 dottedPrefix_ = false;
1938 /// Absolute path for debugging.
1943 /// Add the first segment from the postfix or three dots to the prefix.
1944 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1945 /// when really needed.
1946 void shiftPathSegment(bool dotted)
1948 if (postfix_.count() <= 0)
1952 if (dottedPrefix_ && !prefix_.isEmpty())
1953 prefix_ += ellipsisSlash_;
1954 prefix_ += postfix_.front() + "/";
1956 dottedPrefix_ = dotted && !prefix_.isEmpty();
1957 postfix_.pop_front();
1960 QString displayString() const
1962 if (prefix_.isEmpty())
1965 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1966 return prefix_ + (dots ? ellipsisSlash_ : "") + filename_;
1969 QString forecastPathString() const
1971 if (postfix_.count() == 0)
1972 return displayString();
1975 + (dottedPrefix_ ? ellipsisSlash_ : "")
1976 + postfix_.front() + "/";
1979 bool final() const { return postfix_.empty(); }
1981 int tab() const { return tab_; }
1985 static QString const ellipsisSlash_;
1989 QStringList postfix_;
2001 QString const DisplayPath::ellipsisSlash_ = QString(QChar(0x2026)) + "/";
2005 bool operator<(DisplayPath const & a, DisplayPath const & b)
2007 return a.displayString() < b.displayString();
2011 bool operator==(DisplayPath const & a, DisplayPath const & b)
2013 return a.displayString() == b.displayString();
2017 void TabWorkArea::updateTabTexts()
2022 std::list<DisplayPath> paths;
2023 typedef std::list<DisplayPath>::iterator It;
2025 // collect full names first: path into postfix, empty prefix and
2026 // filename without extension
2027 for (size_t i = 0; i < n; ++i) {
2028 GuiWorkArea * i_wa = workArea(i);
2029 FileName const fn = i_wa->bufferView().buffer().fileName();
2030 paths.push_back(DisplayPath(i, fn));
2033 // go through path segments and see if it helps to make the path more unique
2034 bool somethingChanged = true;
2035 bool allFinal = false;
2036 while (somethingChanged && !allFinal) {
2037 // adding path segments changes order
2040 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
2041 somethingChanged = false;
2044 // find segments which are not unique (i.e. non-atomic)
2045 It it = paths.begin();
2047 QString segString = it->displayString();
2048 for (; it != paths.end(); ++it) {
2049 // look to the next item
2054 allFinal = allFinal && it->final();
2056 LYXERR(Debug::GUI, "it = " << it->abs()
2057 << " => " << it->displayString());
2059 // still the same segment?
2061 if ((next != paths.end()
2062 && (nextString = next->displayString()) == segString))
2064 LYXERR(Debug::GUI, "segment ended");
2066 // only a trivial one with one element?
2067 if (it == segStart) {
2068 // start new segment
2070 segString = nextString;
2074 // We found a non-atomic segment
2075 // We know that segStart <= it < next <= paths.end().
2076 // The assertion below tells coverity about it.
2077 LATTEST(segStart != paths.end());
2078 QString dspString = segStart->forecastPathString();
2079 LYXERR(Debug::GUI, "first forecast found for "
2080 << segStart->abs() << " => " << dspString);
2083 // Shift path segments and hope for the best
2084 // that it makes the path more unique.
2085 somethingChanged = true;
2086 bool moreUnique = false;
2087 for (; sit != next; ++sit) {
2088 if (sit->forecastPathString() != dspString) {
2089 LYXERR(Debug::GUI, "different forecast found for "
2090 << sit->abs() << " => " << sit->forecastPathString());
2094 LYXERR(Debug::GUI, "same forecast found for "
2095 << sit->abs() << " => " << dspString);
2098 // if the path segment helped, add it. Otherwise add dots
2099 bool dots = !moreUnique;
2100 LYXERR(Debug::GUI, "using dots = " << dots);
2101 for (sit = segStart; sit != next; ++sit) {
2102 sit->shiftPathSegment(dots);
2103 LYXERR(Debug::GUI, "shifting "
2104 << sit->abs() << " => " << sit->displayString());
2107 // start new segment
2109 segString = nextString;
2113 // set new tab titles
2114 for (It it = paths.begin(); it != paths.end(); ++it) {
2115 int const tab_index = it->tab();
2116 Buffer const & buf = workArea(tab_index)->bufferView().buffer();
2117 QString tab_text = it->displayString().replace("&", "&&");
2118 if (!buf.fileName().empty() && !buf.isClean())
2120 QString tab_tooltip = it->abs();
2121 if (buf.hasReadonlyFlag()) {
2122 setTabIcon(tab_index, QIcon(getPixmap("images/", "emblem-readonly", "svgz,png")));
2123 tab_tooltip = qt_("%1 (read only)").arg(tab_tooltip);
2125 setTabIcon(tab_index, QIcon());
2126 if (buf.notifiesExternalModification()) {
2127 QString const warn = qt_("%1 (modified externally)");
2128 tab_tooltip = warn.arg(tab_tooltip);
2129 tab_text += QChar(0x26a0);
2131 setTabText(tab_index, tab_text);
2132 setTabToolTip(tab_index, tab_tooltip);
2137 void TabWorkArea::showContextMenu(const QPoint & pos)
2140 clicked_tab_ = tabBar()->tabAt(pos);
2141 if (clicked_tab_ == -1)
2146 popup.addAction(QIcon(getPixmap("images/", "hidetab", "svgz,png")),
2147 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
2148 popup.addAction(QIcon(getPixmap("images/", "closetab", "svgz,png")),
2149 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
2150 popup.exec(tabBar()->mapToGlobal(pos));
2156 void TabWorkArea::moveTab(int fromIndex, int toIndex)
2158 QWidget * w = widget(fromIndex);
2159 QIcon icon = tabIcon(fromIndex);
2160 QString text = tabText(fromIndex);
2162 setCurrentIndex(fromIndex);
2163 removeTab(fromIndex);
2164 insertTab(toIndex, w, icon, text);
2165 setCurrentIndex(toIndex);
2169 GuiWorkAreaContainer::GuiWorkAreaContainer(GuiWorkArea * wa, QWidget * parent)
2170 : QWidget(parent), wa_(wa)
2172 LASSERT(wa, return);
2173 Ui::WorkAreaUi::setupUi(this);
2174 layout()->addWidget(wa);
2175 connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
2176 this, SLOT(updateDisplay()));
2177 connect(reloadPB, SIGNAL(clicked()), this, SLOT(reload()));
2178 connect(ignorePB, SIGNAL(clicked()), this, SLOT(ignore()));
2179 setMessageColour({notificationFrame}, {reloadPB, ignorePB});
2184 void GuiWorkAreaContainer::updateDisplay()
2186 Buffer const & buf = wa_->bufferView().buffer();
2187 notificationFrame->setHidden(!buf.notifiesExternalModification());
2188 QString const label = qt_("<b>The file %1 changed on disk.</b>")
2189 .arg(toqstr(buf.fileName().displayName()));
2190 externalModificationLabel->setText(label);
2194 void GuiWorkAreaContainer::dispatch(FuncRequest f) const
2196 lyx::dispatch(FuncRequest(LFUN_BUFFER_SWITCH,
2197 wa_->bufferView().buffer().absFileName()));
2202 void GuiWorkAreaContainer::reload() const
2204 dispatch(FuncRequest(LFUN_BUFFER_RELOAD));
2208 void GuiWorkAreaContainer::ignore() const
2210 dispatch(FuncRequest(LFUN_BUFFER_EXTERNAL_MODIFICATION_CLEAR));
2214 void GuiWorkAreaContainer::mouseDoubleClickEvent(QMouseEvent * event)
2216 // prevent TabWorkArea from opening a new buffer on double click
2221 } // namespace frontend
2224 #include "moc_GuiWorkArea.cpp"