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"
22 #include "BufferList.h"
23 #include "BufferParams.h"
24 #include "BufferView.h"
25 #include "CoordCache.h"
28 #include "FuncRequest.h"
29 #include "GuiApplication.h"
30 #include "GuiCompleter.h"
31 #include "GuiKeySymbol.h"
32 #include "GuiPainter.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/FileName.h"
51 #include "support/lassert.h"
52 #include "support/TempFile.h"
54 #include "frontends/Application.h"
55 #include "frontends/FontMetrics.h"
56 #include "frontends/WorkAreaManager.h"
58 #include <QContextMenuEvent>
59 #if (QT_VERSION < 0x050000)
60 #include <QInputContext>
67 #include <QMainWindow>
72 #include <QPixmapCache>
74 #include <QStyleOption>
75 #include <QStylePainter>
77 #include <QToolButton>
81 #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;
139 void draw(QPainter & painter)
141 if (!show_ || !rect_.isValid())
145 int l = x_ - rect_.left();
146 int r = rect_.right() - x_;
147 int bot = rect_.bottom();
149 // draw vertical line
150 painter.fillRect(x_, y, cursor_width_, rect_.height(), color_);
152 // draw RTL/LTR indication
153 painter.setPen(color_);
156 painter.drawLine(x_, bot, x_ - l, bot);
158 painter.drawLine(x_, bot, x_ + cursor_width_ + r, bot);
161 // draw completion triangle
163 int m = y + rect_.height() / 2;
164 int d = TabIndicatorWidth - 1;
166 painter.drawLine(x_ - 1, m - d, x_ - 1 - d, m);
167 painter.drawLine(x_ - 1, m + d, x_ - 1 - d, m);
169 painter.drawLine(x_ + cursor_width_, m - d, x_ + cursor_width_ + d, m);
170 painter.drawLine(x_ + cursor_width_, m + d, x_ + cursor_width_ + d, m);
175 void update(int x, int y, int h, bool l_shape,
176 bool rtl, bool completable)
178 color_ = guiApp->colorCache().get(Color_cursor);
181 completable_ = completable;
184 // extension to left and right
188 // RTL/LTR indication
196 // completion triangle
199 l = max(l, TabIndicatorWidth);
201 r = max(r, TabIndicatorWidth);
204 // compute overall rectangle
205 rect_ = QRect(x - l, y, cursor_width_ + r + l, h);
208 void show(bool set_show = true) { show_ = set_show; }
209 void hide() { show_ = false; }
210 int cursorWidth() const { return cursor_width_; }
211 void recomputeWidth() {
212 cursor_width_ = lyxrc.cursor_width
214 : 1 + int((lyxrc.zoom + 50) / 200.0);
217 QRect const & rect() { return rect_; }
220 /// cursor is in RTL or LTR text
222 /// indication for RTL or LTR
224 /// triangle to show that a completion is available
230 /// rectangle, possibly with l_shape and completion triangle
232 /// x position (were the vertical line is drawn)
239 // This is a 'heartbeat' generating synthetic mouse move events when the
240 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
241 SyntheticMouseEvent::SyntheticMouseEvent()
242 : timeout(200), restart_timeout(true)
246 GuiWorkArea::Private::Private(GuiWorkArea * parent)
247 : p(parent), screen_(0), buffer_view_(0), lyx_view_(0), cursor_visible_(false),
248 need_resize_(false), schedule_redraw_(false), preedit_lines_(1),
249 completer_(new GuiCompleter(p, p))
254 GuiWorkArea::GuiWorkArea(QWidget * /* w */)
255 : d(new Private(this))
260 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
261 : d(new Private(this))
269 void GuiWorkArea::init()
272 connect(&d->cursor_timeout_, SIGNAL(timeout()),
273 this, SLOT(toggleCursor()));
275 int const time = QApplication::cursorFlashTime() / 2;
277 d->cursor_timeout_.setInterval(time);
278 d->cursor_timeout_.start();
280 // let's initialize this just to be safe
281 d->cursor_timeout_.setInterval(500);
285 // With Qt4.5 a mouse event will happen before the first paint event
286 // so make sure that the buffer view has an up to date metrics.
287 d->buffer_view_->resize(viewport()->width(), viewport()->height());
288 d->cursor_ = new frontend::CursorWidget();
291 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
292 setAcceptDrops(true);
293 setMouseTracking(true);
294 setMinimumSize(100, 70);
295 setFrameStyle(QFrame::NoFrame);
298 viewport()->setAutoFillBackground(false);
299 // We don't need double-buffering nor SystemBackground on
300 // the viewport because we have our own backing pixmap.
301 viewport()->setAttribute(Qt::WA_NoSystemBackground);
303 setFocusPolicy(Qt::StrongFocus);
305 d->setCursorShape(Qt::IBeamCursor);
307 d->synthetic_mouse_event_.timeout.timeout.connect(
308 bind(&GuiWorkArea::generateSyntheticMouseEvent,
311 // Initialize the vertical Scroll Bar
312 QObject::connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
313 this, SLOT(scrollTo(int)));
315 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
316 << " viewport height: " << viewport()->height());
318 // Enables input methods for asian languages.
319 // Must be set when creating custom text editing widgets.
320 setAttribute(Qt::WA_InputMethodEnabled, true);
322 d->dialog_mode_ = false;
326 GuiWorkArea::~GuiWorkArea()
328 d->buffer_view_->buffer().workAreaManager().remove(this);
330 delete d->buffer_view_;
332 // Completer has a QObject parent and is thus automatically destroyed.
334 // delete completer_;
339 Qt::CursorShape GuiWorkArea::cursorShape() const
341 return viewport()->cursor().shape();
345 void GuiWorkArea::Private::setCursorShape(Qt::CursorShape shape)
347 p->viewport()->setCursor(shape);
351 void GuiWorkArea::Private::updateCursorShape()
353 setCursorShape(buffer_view_->clickableInset()
354 ? Qt::PointingHandCursor : Qt::IBeamCursor);
358 void GuiWorkArea::setGuiView(GuiView & gv)
364 void GuiWorkArea::setBuffer(Buffer & buffer)
366 delete d->buffer_view_;
367 d->buffer_view_ = new BufferView(buffer);
368 buffer.workAreaManager().add(this);
370 // HACK: Prevents an additional redraw when the scrollbar pops up
371 // which regularily happens on documents with more than one page.
372 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
373 // Since we have no geometry information yet, we assume that
374 // a document needs a scrollbar if there is more then four
375 // paragraph in the outermost text.
376 if (buffer.text().paragraphs().size() > 4)
377 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
378 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
382 void GuiWorkArea::fixVerticalScrollBar()
385 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
389 void GuiWorkArea::close()
391 d->lyx_view_->removeWorkArea(this);
395 void GuiWorkArea::setFullScreen(bool full_screen)
397 d->buffer_view_->setFullScreen(full_screen);
398 setFrameStyle(QFrame::NoFrame);
400 setFrameStyle(QFrame::NoFrame);
401 if (lyxrc.full_screen_scrollbar)
402 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
404 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
408 BufferView & GuiWorkArea::bufferView()
410 return *d->buffer_view_;
414 BufferView const & GuiWorkArea::bufferView() const
416 return *d->buffer_view_;
420 void GuiWorkArea::stopBlinkingCursor()
422 d->cursor_timeout_.stop();
427 void GuiWorkArea::startBlinkingCursor()
429 // do not show the cursor if the view is busy
435 d->buffer_view_->cursorPosAndHeight(p, h);
436 // Don't start blinking if the cursor isn't on screen.
437 if (!d->buffer_view_->cursorInView(p, h))
442 //we're not supposed to cache this value.
443 int const time = QApplication::cursorFlashTime() / 2;
446 d->cursor_timeout_.setInterval(time);
447 d->cursor_timeout_.start();
451 void GuiWorkArea::redraw(bool update_metrics)
454 // No need to redraw in this case.
457 // No need to do anything if this is the current view. The BufferView
458 // metrics are already up to date.
459 if (update_metrics || d->lyx_view_ != guiApp->currentView()
460 || d->lyx_view_->currentWorkArea() != this) {
461 // FIXME: it would be nice to optimize for the off-screen case.
462 d->buffer_view_->cursor().fixIfBroken();
463 d->buffer_view_->updateMetrics();
464 d->buffer_view_->cursor().fixIfBroken();
467 // update cursor position, because otherwise it has to wait until
468 // the blinking interval is over
469 if (d->cursor_visible_) {
474 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
476 update(0, 0, viewport()->width(), viewport()->height());
478 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
479 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
480 d->updateScrollbar();
481 d->lyx_view_->updateStatusBar();
483 if (lyxerr.debugging(Debug::WORKAREA))
484 d->buffer_view_->coordCache().dump();
488 d->updateCursorShape();
492 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
494 if (d->lyx_view_->isFullScreen() && d->lyx_view_->menuBar()->isVisible()
495 && lyxrc.full_screen_menubar) {
496 // FIXME HACK: we should not have to do this here. See related comment
497 // in GuiView::event() (QEvent::ShortcutOverride)
498 d->lyx_view_->menuBar()->hide();
501 // In order to avoid bad surprise in the middle of an operation,
502 // we better stop the blinking cursor...
503 // the cursor gets restarted in GuiView::restartCursor()
504 stopBlinkingCursor();
505 guiApp->processKeySym(key, mod);
509 void GuiWorkArea::Private::dispatch(FuncRequest const & cmd0, KeyModifier mod)
512 if (cmd0.action() == LFUN_FILE_OPEN) {
514 lyx_view_->dispatch(cmd0, dr);
520 if (cmd0.action() == LFUN_MOUSE_PRESS) {
521 if (mod == ShiftModifier)
522 cmd = FuncRequest(cmd0, "region-select");
523 else if (mod == ControlModifier)
524 cmd = FuncRequest(cmd0, "paragraph-select");
531 bool const notJustMovingTheMouse =
532 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
534 // In order to avoid bad surprise in the middle of an operation, we better stop
535 // the blinking cursor.
536 if (notJustMovingTheMouse)
537 p->stopBlinkingCursor();
539 buffer_view_->mouseEventDispatch(cmd);
541 // Skip these when selecting
542 // FIXME: let GuiView take care of those.
543 if (cmd.action() != LFUN_MOUSE_MOTION) {
544 completer_->updateVisibility(false, false);
545 lyx_view_->updateDialogs();
546 lyx_view_->updateStatusBar();
549 // GUI tweaks except with mouse motion with no button pressed.
550 if (notJustMovingTheMouse) {
551 // Slight hack: this is only called currently when we
552 // clicked somewhere, so we force through the display
553 // of the new status here.
554 // FIXME: let GuiView take care of those.
555 lyx_view_->clearMessage();
557 // Show the cursor immediately after any operation
558 p->startBlinkingCursor();
565 void GuiWorkArea::Private::resizeBufferView()
567 // WARNING: Please don't put any code that will trigger a repaint here!
568 // We are already inside a paint event.
569 p->stopBlinkingCursor();
570 // Warn our container (GuiView).
575 buffer_view_->cursorPosAndHeight(point, h);
576 bool const cursor_in_view = buffer_view_->cursorInView(point, h);
577 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
579 buffer_view_->scrollToCursor();
582 // Update scrollbars which might have changed due different
583 // BufferView dimension. This is especially important when the
584 // BufferView goes from zero-size to the real-size for the first time,
585 // as the scrollbar paramters are then set for the first time.
588 need_resize_ = false;
590 // Eventually, restart the cursor after the resize event.
591 // We might be resizing even if the focus is on another widget so we only
592 // restart the cursor if we have the focus.
594 QTimer::singleShot(50, p, SLOT(startBlinkingCursor()));
598 void GuiWorkArea::Private::showCursor()
605 buffer_view_->cursorPosAndHeight(p, h);
606 if (!buffer_view_->cursorInView(p, h))
610 bool l_shape = false;
611 Font const & realfont = buffer_view_->cursor().real_current_font;
612 BufferParams const & bp = buffer_view_->buffer().params();
613 bool const samelang = realfont.language() == bp.language;
614 bool const isrtl = realfont.isVisibleRightToLeft();
616 if (!samelang || isrtl != bp.language->rightToLeft())
619 // The ERT language hack needs fixing up
620 if (realfont.language() == latex_language)
623 // show cursor on screen
624 Cursor & cur = buffer_view_->cursor();
625 bool completable = cur.inset().showCompletionCursor()
626 && completer_->completionAvailable()
627 && !completer_->popupVisible()
628 && !completer_->inlineVisible();
629 cursor_visible_ = true;
630 cursor_->recomputeWidth();
632 //int cur_x = buffer_view_->getPos(cur).x_;
633 // We may have decided to slide the cursor row so that cursor
635 p.x_ -= buffer_view_->horizScrollOffset();
637 showCursor(p.x_, p.y_, h, l_shape, isrtl, completable);
641 void GuiWorkArea::Private::hideCursor()
643 if (!cursor_visible_)
646 cursor_visible_ = false;
651 void GuiWorkArea::toggleCursor()
653 if (d->cursor_visible_)
660 void GuiWorkArea::Private::updateScrollbar()
662 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
663 // WARNING: don't touch at the scrollbar value like this:
664 // verticalScrollBar()->setValue(scroll_.position);
665 // because this would cause a recursive signal/slot calling with
666 // GuiWorkArea::scrollTo
667 p->verticalScrollBar()->setRange(scroll_.min, scroll_.max);
668 p->verticalScrollBar()->setPageStep(scroll_.page_step);
669 p->verticalScrollBar()->setSingleStep(scroll_.single_step);
670 p->verticalScrollBar()->setSliderPosition(scroll_.position);
674 void GuiWorkArea::scrollTo(int value)
676 stopBlinkingCursor();
677 d->buffer_view_->scrollDocView(value, true);
679 if (lyxrc.cursor_follows_scrollbar) {
680 d->buffer_view_->setCursorFromScrollbar();
681 // FIXME: let GuiView take care of those.
682 d->lyx_view_->updateLayoutList();
684 // Show the cursor immediately after any operation.
685 startBlinkingCursor();
687 QApplication::syncX();
692 bool GuiWorkArea::event(QEvent * e)
695 case QEvent::ToolTip: {
696 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
697 if (lyxrc.use_tooltip) {
698 QPoint pos = helpEvent->pos();
699 if (pos.x() < viewport()->width()) {
700 QString s = toqstr(d->buffer_view_->toolTip(pos.x(), pos.y()));
701 QToolTip::showText(helpEvent->globalPos(), s);
704 QToolTip::hideText();
706 // Don't forget to accept the event!
711 case QEvent::ShortcutOverride: {
712 // We catch this event in order to catch the Tab or Shift+Tab key press
713 // which are otherwise reserved to focus switching between controls
715 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
716 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
717 || (ke->key() == Qt::Key_Backtab && (
718 ke->modifiers() == Qt::ShiftModifier
719 || ke->modifiers() == Qt::NoModifier))) {
723 return QAbstractScrollArea::event(e);
727 return QAbstractScrollArea::event(e);
733 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
736 if (e->reason() == QContextMenuEvent::Mouse)
737 // the menu name is set on mouse press
738 name = d->context_menu_name_;
740 QPoint pos = e->pos();
741 Cursor const & cur = d->buffer_view_->cursor();
742 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
743 // Do not access the context menu of math right in front of before
744 // the cursor. This does not work when the cursor is in text.
745 Inset * inset = cur.paragraph().getInset(cur.pos());
746 if (inset && inset->asInsetMath())
748 else if (cur.pos() > 0) {
749 Inset * inset = cur.paragraph().getInset(cur.pos() - 1);
754 name = d->buffer_view_->contextMenu(pos.x(), pos.y());
758 QAbstractScrollArea::contextMenuEvent(e);
761 // always show mnemonics when the keyboard is used to show the context menu
762 // FIXME: This should be fixed in Qt itself
763 bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
764 QMenu * menu = guiApp->menus().menu(toqstr(name), *d->lyx_view_, keyboard);
766 QAbstractScrollArea::contextMenuEvent(e);
769 // Position the menu to the right.
770 // FIXME: menu position should be different for RTL text.
771 menu->exec(e->globalPos());
776 void GuiWorkArea::focusInEvent(QFocusEvent * e)
778 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
779 if (d->lyx_view_->currentWorkArea() != this) {
780 d->lyx_view_->setCurrentWorkArea(this);
781 d->lyx_view_->currentWorkArea()->bufferView().buffer().updateBuffer();
784 startBlinkingCursor();
785 QAbstractScrollArea::focusInEvent(e);
789 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
791 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
792 stopBlinkingCursor();
793 QAbstractScrollArea::focusOutEvent(e);
797 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
799 if (d->dc_event_.active && d->dc_event_ == *e) {
800 d->dc_event_.active = false;
801 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
802 q_button_state(e->button()));
808 #if (QT_VERSION < 0x050000)
809 inputContext()->reset();
812 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
813 q_button_state(e->button()));
814 d->dispatch(cmd, q_key_state(e->modifiers()));
816 // Save the context menu on mouse press, because also the mouse
817 // cursor is set on mouse press. Afterwards, we can either release
818 // the mousebutton somewhere else, or the cursor might have moved
819 // due to the DEPM. We need to do this after the mouse has been
820 // set in dispatch(), because the selection state might change.
821 if (e->button() == Qt::RightButton)
822 d->context_menu_name_ = d->buffer_view_->contextMenu(e->x(), e->y());
828 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
830 if (d->synthetic_mouse_event_.timeout.running())
831 d->synthetic_mouse_event_.timeout.stop();
833 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
834 q_button_state(e->button()));
840 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
842 // we kill the triple click if we move
843 doubleClickTimeout();
844 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
845 q_motion_state(e->buttons()));
849 // If we're above or below the work area...
850 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
851 && e->buttons() == mouse_button::button1) {
852 // Make sure only a synthetic event can cause a page scroll,
853 // so they come at a steady rate:
855 // _Force_ a scroll up:
856 cmd.set_y(e->y() - 21);
858 cmd.set_y(e->y() + 21);
859 // Store the event, to be handled when the timeout expires.
860 d->synthetic_mouse_event_.cmd = cmd;
862 if (d->synthetic_mouse_event_.timeout.running()) {
863 // Discard the event. Note that it _may_ be handled
864 // when the timeout expires if
865 // synthetic_mouse_event_.cmd has not been overwritten.
866 // Ie, when the timeout expires, we handle the
867 // most recent event but discard all others that
868 // occurred after the one used to start the timeout
869 // in the first place.
873 d->synthetic_mouse_event_.restart_timeout = true;
874 d->synthetic_mouse_event_.timeout.start();
875 // Fall through to handle this event...
877 } else if (d->synthetic_mouse_event_.timeout.running()) {
878 // Store the event, to be possibly handled when the timeout
880 // Once the timeout has expired, normal control is returned
881 // to mouseMoveEvent (restart_timeout = false).
882 // This results in a much smoother 'feel' when moving the
883 // mouse back into the work area.
884 d->synthetic_mouse_event_.cmd = cmd;
885 d->synthetic_mouse_event_.restart_timeout = false;
892 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
894 // Wheel rotation by one notch results in a delta() of 120 (see
895 // documentation of QWheelEvent)
896 double const delta = ev->delta() / 120.0;
898 switch (lyxrc.scroll_wheel_zoom) {
899 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
900 zoom = ev->modifiers() & Qt::ControlModifier;
901 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
903 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
904 zoom = ev->modifiers() & Qt::ShiftModifier;
905 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
907 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
908 zoom = ev->modifiers() & Qt::AltModifier;
909 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
911 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
915 docstring arg = convert<docstring>(int(5 * delta));
916 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
920 // Take into account the desktop wide settings.
921 int const lines = qApp->wheelScrollLines();
922 int const page_step = verticalScrollBar()->pageStep();
923 // Test if the wheel mouse is set to one screen at a time.
924 int scroll_value = lines > page_step
925 ? page_step : lines * verticalScrollBar()->singleStep();
927 // Take into account the rotation and the user preferences.
928 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
929 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
930 << " delta = " << delta << " scroll_value = " << scroll_value
931 << " page_step = " << page_step);
933 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
939 void GuiWorkArea::generateSyntheticMouseEvent()
941 int const e_y = d->synthetic_mouse_event_.cmd.y();
942 int const wh = d->buffer_view_->workHeight();
943 bool const up = e_y < 0;
944 bool const down = e_y > wh;
946 // Set things off to generate the _next_ 'pseudo' event.
948 if (d->synthetic_mouse_event_.restart_timeout) {
949 // This is some magic formulae to determine the speed
950 // of scrolling related to the position of the mouse.
953 int dist = up ? -e_y : e_y - wh;
954 time = max(min(200, 250000 / (dist * dist)), 1) ;
957 step = 80000 / (time * time);
961 d->synthetic_mouse_event_.timeout.setTimeout(time);
962 d->synthetic_mouse_event_.timeout.start();
965 // Can we scroll further ?
966 int const value = verticalScrollBar()->value();
967 if (value == verticalScrollBar()->maximum()
968 || value == verticalScrollBar()->minimum()) {
969 d->synthetic_mouse_event_.timeout.stop();
974 if (step <= 2 * wh) {
975 d->buffer_view_->scroll(up ? -step : step);
976 d->buffer_view_->updateMetrics();
978 d->buffer_view_->scrollDocView(value + (up ? -step : step), false);
981 // In which paragraph do we have to set the cursor ?
982 Cursor & cur = d->buffer_view_->cursor();
983 // FIXME: we don't know howto handle math.
984 Text * text = cur.text();
987 TextMetrics const & tm = d->buffer_view_->textMetrics(text);
989 pair<pit_type, const ParagraphMetrics *> pp = up ? tm.first() : tm.last();
990 ParagraphMetrics const & pm = *pp.second;
991 pit_type const pit = pp.first;
993 if (pm.rows().empty())
996 // Find the row at which we set the cursor.
997 RowList::const_iterator rit = pm.rows().begin();
998 RowList::const_iterator rlast = pm.rows().end();
999 int yy = pm.position() - pm.ascent();
1000 for (--rlast; rit != rlast; ++rit) {
1001 int h = rit->height();
1002 if ((up && yy + h > 0)
1003 || (!up && yy + h > wh - defaultRowHeight()))
1008 // Find the position of the cursor
1010 int x = d->synthetic_mouse_event_.cmd.x();
1011 pos_type const pos = tm.getPosNearX(*rit, x, bound);
1016 cur.boundary(bound);
1018 d->buffer_view_->buffer().changed(false);
1023 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
1025 // Do not process here some keys if dialog_mode_ is set
1027 && (ev->modifiers() == Qt::NoModifier
1028 || ev->modifiers() == Qt::ShiftModifier)
1029 && (ev->key() == Qt::Key_Escape
1030 || ev->key() == Qt::Key_Enter
1031 || ev->key() == Qt::Key_Return)
1037 // intercept some keys if completion popup is visible
1038 if (d->completer_->popupVisible()) {
1039 switch (ev->key()) {
1041 case Qt::Key_Return:
1042 d->completer_->activate();
1048 // do nothing if there are other events
1049 // (the auto repeated events come too fast)
1050 // it looks like this is only needed on X11
1052 if (qApp->hasPendingEvents() && ev->isAutoRepeat()) {
1053 switch (ev->key()) {
1054 case Qt::Key_PageDown:
1055 case Qt::Key_PageUp:
1060 LYXERR(Debug::KEY, "system is busy: scroll key event ignored");
1067 KeyModifier m = q_key_state(ev->modifiers());
1070 if (m & ShiftModifier)
1072 if (m & ControlModifier)
1074 if (m & AltModifier)
1076 if (m & MetaModifier)
1079 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1080 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
1081 << " keyState: " << str);
1084 setKeySymbol(&sym, ev);
1086 processKeySym(sym, q_key_state(ev->modifiers()));
1094 void GuiWorkArea::doubleClickTimeout()
1096 d->dc_event_.active = false;
1100 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1102 d->dc_event_ = DoubleClick(ev);
1103 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1104 SLOT(doubleClickTimeout()));
1105 FuncRequest cmd(LFUN_MOUSE_DOUBLE,
1107 q_button_state(ev->button()));
1113 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1115 QAbstractScrollArea::resizeEvent(ev);
1116 d->need_resize_ = true;
1121 void GuiWorkArea::Private::update(int x, int y, int w, int h)
1123 p->viewport()->update(x, y, w, h);
1127 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1129 QRect const rc = ev->rect();
1130 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1131 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1133 if (d->need_resize_) {
1135 d->resizeBufferView();
1136 if (d->cursor_visible_) {
1142 QPainter pain(viewport());
1143 if (lyxrc.use_qimage) {
1144 pain.drawImage(rc, static_cast<QImage const &>(*d->screen_), rc);
1146 pain.drawPixmap(rc, static_cast<QPixmap const &>(*d->screen_), rc);
1148 d->cursor_->draw(pain);
1153 void GuiWorkArea::Private::updateScreen()
1155 GuiPainter pain(screen_);
1156 buffer_view_->draw(pain);
1160 void GuiWorkArea::Private::showCursor(int x, int y, int h,
1161 bool l_shape, bool rtl, bool completable)
1163 if (schedule_redraw_) {
1164 // This happens when a graphic conversion is finished. As we don't know
1165 // the size of the new graphics, it's better the update everything.
1166 // We can't use redraw() here because this would trigger a infinite
1167 // recursive loop with showCursor().
1168 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
1171 p->viewport()->update(QRect(0, 0, p->viewport()->width(), p->viewport()->height()));
1172 schedule_redraw_ = false;
1173 // Show the cursor immediately after the update.
1179 cursor_->update(x, y, h, l_shape, rtl, completable);
1181 p->viewport()->update(cursor_->rect());
1185 void GuiWorkArea::Private::removeCursor()
1188 //if (!qApp->focusWidget())
1189 p->viewport()->update(cursor_->rect());
1193 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1195 QString const & commit_string = e->commitString();
1196 docstring const & preedit_string
1197 = qstring_to_ucs4(e->preeditString());
1199 if (!commit_string.isEmpty()) {
1201 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1202 << " commitString: " << e->commitString());
1206 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
1207 for (int i = 0; i != commit_string.size(); ++i) {
1208 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
1213 // Hide the cursor during the kana-kanji transformation.
1214 if (preedit_string.empty())
1215 startBlinkingCursor();
1217 stopBlinkingCursor();
1219 // last_width : for checking if last preedit string was/wasn't empty.
1221 // We could have more than one work area, right?
1222 static bool last_width = false;
1223 if (!last_width && preedit_string.empty()) {
1224 // if last_width is last length of preedit string.
1229 GuiPainter pain(d->screen_);
1230 d->buffer_view_->updateMetrics();
1231 d->buffer_view_->draw(pain);
1232 FontInfo font = d->buffer_view_->cursor().getFont().fontInfo();
1233 FontMetrics const & fm = theFontMetrics(font);
1234 int height = fm.maxHeight();
1235 int cur_x = d->cursor_->rect().left();
1236 int cur_y = d->cursor_->rect().bottom();
1238 // redraw area of preedit string.
1239 update(0, cur_y - height, viewport()->width(),
1240 (height + 1) * d->preedit_lines_);
1242 if (preedit_string.empty()) {
1244 d->preedit_lines_ = 1;
1250 // att : stores an IM attribute.
1251 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
1253 // get attributes of input method cursor.
1254 // cursor_pos : cursor position in preedit string.
1255 size_t cursor_pos = 0;
1256 bool cursor_is_visible = false;
1257 for (int i = 0; i != att.size(); ++i) {
1258 if (att.at(i).type == QInputMethodEvent::Cursor) {
1259 cursor_pos = att.at(i).start;
1260 cursor_is_visible = att.at(i).length != 0;
1265 size_t preedit_length = preedit_string.length();
1267 // get position of selection in input method.
1268 // FIXME: isn't there a way to do this simplier?
1269 // rStart : cursor position in selected string in IM.
1271 // rLength : selected string length in IM.
1273 if (cursor_pos < preedit_length) {
1274 for (int i = 0; i != att.size(); ++i) {
1275 if (att.at(i).type == QInputMethodEvent::TextFormat) {
1276 if (att.at(i).start <= int(cursor_pos)
1277 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
1278 rStart = att.at(i).start;
1279 rLength = att.at(i).length;
1280 if (!cursor_is_visible)
1281 cursor_pos += rLength;
1288 rStart = cursor_pos;
1292 int const right_margin = d->buffer_view_->rightMargin();
1293 Painter::preedit_style ps;
1294 // Most often there would be only one line:
1295 d->preedit_lines_ = 1;
1296 for (size_t pos = 0; pos != preedit_length; ++pos) {
1297 char_type const typed_char = preedit_string[pos];
1298 // reset preedit string style
1299 ps = Painter::preedit_default;
1301 // if we reached the right extremity of the screen, go to next line.
1302 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
1303 cur_x = right_margin;
1304 cur_y += height + 1;
1305 ++d->preedit_lines_;
1307 // preedit strings are displayed with dashed underline
1308 // and partial strings are displayed white on black indicating
1309 // that we are in selecting mode in the input method.
1310 // FIXME: rLength == preedit_length is not a changing condition
1311 // FIXME: should be put out of the loop.
1313 && pos < rStart + rLength
1314 && !(cursor_pos < rLength && rLength == preedit_length))
1315 ps = Painter::preedit_selecting;
1317 if (pos == cursor_pos
1318 && (cursor_pos < rLength && rLength == preedit_length))
1319 ps = Painter::preedit_cursor;
1321 // draw one character and update cur_x.
1322 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1325 // update the preedit string screen area.
1326 update(0, cur_y - d->preedit_lines_*height, viewport()->width(),
1327 (height + 1) * d->preedit_lines_);
1329 // Don't forget to accept the event!
1334 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1336 QRect cur_r(0, 0, 0, 0);
1338 // this is the CJK-specific composition window position and
1339 // the context menu position when the menu key is pressed.
1340 case Qt::ImMicroFocus:
1341 cur_r = d->cursor_->rect();
1342 if (d->preedit_lines_ != 1)
1344 cur_r.moveBottom(cur_r.bottom()
1345 + cur_r.height() * (d->preedit_lines_ - 1));
1346 // return lower right of cursor in LyX.
1349 return QWidget::inputMethodQuery(query);
1354 void GuiWorkArea::updateWindowTitle()
1356 docstring maximize_title;
1357 docstring minimize_title;
1359 Buffer const & buf = d->buffer_view_->buffer();
1360 FileName const file_name = buf.fileName();
1361 if (!file_name.empty()) {
1362 maximize_title = file_name.displayName(130);
1363 minimize_title = from_utf8(file_name.onlyFileName());
1364 if (buf.lyxvc().inUse()) {
1365 if (buf.lyxvc().locking())
1366 maximize_title += _(" (version control, locking)");
1368 maximize_title += _(" (version control)");
1370 if (!buf.isClean()) {
1371 maximize_title += _(" (changed)");
1372 minimize_title += char_type('*');
1374 if (buf.isReadonly())
1375 maximize_title += _(" (read only)");
1378 QString const new_title = toqstr(maximize_title);
1379 if (new_title != windowTitle()) {
1380 QWidget::setWindowTitle(new_title);
1381 QWidget::setWindowIconText(toqstr(minimize_title));
1387 bool GuiWorkArea::isFullScreen() const
1389 return d->lyx_view_ && d->lyx_view_->isFullScreen();
1393 void GuiWorkArea::scheduleRedraw()
1395 d->schedule_redraw_ = true;
1399 bool GuiWorkArea::inDialogMode() const
1401 return d->dialog_mode_;
1405 void GuiWorkArea::setDialogMode(bool mode)
1407 d->dialog_mode_ = mode;
1411 GuiCompleter & GuiWorkArea::completer()
1413 return *d->completer_;
1416 GuiView const & GuiWorkArea::view() const
1418 return *d->lyx_view_;
1422 GuiView & GuiWorkArea::view()
1424 return *d->lyx_view_;
1427 ////////////////////////////////////////////////////////////////////
1431 ////////////////////////////////////////////////////////////////////
1434 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1436 support::TempFile tempfile("embedded.internal");
1437 tempfile.setAutoRemove(false);
1438 buffer_ = theBufferList().newInternalBuffer(tempfile.name().absFileName());
1439 buffer_->setUnnamed(true);
1440 buffer_->setFullyLoaded(true);
1441 setBuffer(*buffer_);
1442 setDialogMode(true);
1446 EmbeddedWorkArea::~EmbeddedWorkArea()
1448 // No need to destroy buffer and bufferview here, because it is done
1449 // in theBufferList() destruction loop at application exit
1453 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1456 GuiWorkArea::closeEvent(ev);
1460 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1463 GuiWorkArea::hideEvent(ev);
1467 QSize EmbeddedWorkArea::sizeHint () const
1470 // GuiWorkArea sets the size to the screen's viewport
1471 // by returning a value this gets overridden
1472 // EmbeddedWorkArea is now sized to fit in the layout
1473 // of the parent, and has a minimum size set in GuiWorkArea
1474 // which is what we return here
1475 return QSize(100, 70);
1479 void EmbeddedWorkArea::disable()
1481 stopBlinkingCursor();
1482 if (view().currentWorkArea() != this)
1484 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1485 // tolerates it and shows the background logo), what happens if
1486 // an EmbeddedWorkArea is closed after closing all document WAs
1487 view().setCurrentWorkArea(view().currentMainWorkArea());
1490 ////////////////////////////////////////////////////////////////////
1494 ////////////////////////////////////////////////////////////////////
1497 class NoTabFrameMacStyle : public QMacStyle {
1500 QRect subElementRect(SubElement element, const QStyleOption * option,
1501 const QWidget * widget = 0) const
1503 QRect rect = QMacStyle::subElementRect(element, option, widget);
1504 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1506 // The Qt Mac style puts the contents into a 3 pixel wide box
1507 // which looks very ugly and not like other Mac applications.
1508 // Hence we remove this here, and moreover the 16 pixel round
1509 // frame above if the tab bar is hidden.
1510 if (element == QStyle::SE_TabWidgetTabContents) {
1511 rect.adjust(- rect.left(), 0, rect.left(), 0);
1520 NoTabFrameMacStyle noTabFrameMacStyle;
1524 TabWorkArea::TabWorkArea(QWidget * parent)
1525 : QTabWidget(parent), clicked_tab_(-1)
1528 setStyle(&noTabFrameMacStyle);
1531 QPalette pal = palette();
1532 pal.setColor(QPalette::Active, QPalette::Button,
1533 pal.color(QPalette::Active, QPalette::Window));
1534 pal.setColor(QPalette::Disabled, QPalette::Button,
1535 pal.color(QPalette::Disabled, QPalette::Window));
1536 pal.setColor(QPalette::Inactive, QPalette::Button,
1537 pal.color(QPalette::Inactive, QPalette::Window));
1539 QObject::connect(this, SIGNAL(currentChanged(int)),
1540 this, SLOT(on_currentTabChanged(int)));
1542 closeBufferButton = new QToolButton(this);
1543 closeBufferButton->setPalette(pal);
1544 // FIXME: rename the icon to closebuffer.png
1545 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "png")));
1546 closeBufferButton->setText("Close File");
1547 closeBufferButton->setAutoRaise(true);
1548 closeBufferButton->setCursor(Qt::ArrowCursor);
1549 closeBufferButton->setToolTip(qt_("Close File"));
1550 closeBufferButton->setEnabled(true);
1551 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1552 this, SLOT(closeCurrentBuffer()));
1553 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1555 // setup drag'n'drop
1556 QTabBar* tb = new DragTabBar;
1557 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1558 this, SLOT(moveTab(int, int)));
1559 tb->setElideMode(Qt::ElideNone);
1562 // make us responsible for the context menu of the tabbar
1563 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1564 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1565 this, SLOT(showContextMenu(const QPoint &)));
1566 connect(tb, SIGNAL(tabCloseRequested(int)),
1567 this, SLOT(closeTab(int)));
1569 setUsesScrollButtons(true);
1573 void TabWorkArea::paintEvent(QPaintEvent * event)
1575 if (tabBar()->isVisible()) {
1576 QTabWidget::paintEvent(event);
1578 // Prevent the selected tab to influence the
1579 // painting of the frame of the tab widget.
1580 // This is needed for gtk style in Qt.
1581 QStylePainter p(this);
1582 #if QT_VERSION < 0x050000
1583 QStyleOptionTabWidgetFrameV2 opt;
1585 QStyleOptionTabWidgetFrame opt;
1587 initStyleOption(&opt);
1588 opt.rect = style()->subElementRect(QStyle::SE_TabWidgetTabPane,
1590 opt.selectedTabRect = QRect();
1591 p.drawPrimitive(QStyle::PE_FrameTabWidget, opt);
1596 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1598 if (event->button() != Qt::LeftButton)
1601 // return early if double click on existing tabs
1602 for (int i = 0; i < count(); ++i)
1603 if (tabBar()->tabRect(i).contains(event->pos()))
1606 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1610 void TabWorkArea::setFullScreen(bool full_screen)
1612 for (int i = 0; i != count(); ++i) {
1613 if (GuiWorkArea * wa = workArea(i))
1614 wa->setFullScreen(full_screen);
1617 if (lyxrc.full_screen_tabbar)
1618 showBar(!full_screen && count() > 1);
1620 showBar(count() > 1);
1624 void TabWorkArea::showBar(bool show)
1626 tabBar()->setEnabled(show);
1627 tabBar()->setVisible(show);
1628 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1629 setTabsClosable(!lyxrc.single_close_tab_button);
1633 GuiWorkArea * TabWorkArea::currentWorkArea()
1638 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
1644 GuiWorkArea * TabWorkArea::workArea(int index)
1646 return dynamic_cast<GuiWorkArea *>(widget(index));
1650 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
1652 // FIXME: this method doesn't work if we have more than work area
1653 // showing the same buffer.
1654 for (int i = 0; i != count(); ++i) {
1655 GuiWorkArea * wa = workArea(i);
1656 LASSERT(wa, return 0);
1657 if (&wa->bufferView().buffer() == &buffer)
1664 void TabWorkArea::closeAll()
1667 GuiWorkArea * wa = workArea(0);
1668 LASSERT(wa, return);
1675 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1677 LASSERT(work_area, return false);
1678 int index = indexOf(work_area);
1682 if (index == currentIndex())
1683 // Make sure the work area is up to date.
1684 on_currentTabChanged(index);
1686 // Switch to the work area.
1687 setCurrentIndex(index);
1688 work_area->setFocus();
1694 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1696 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1697 wa->setUpdatesEnabled(false);
1698 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1699 // when hiding it again below).
1700 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1701 showBar(count() > 0);
1702 addTab(wa, wa->windowTitle());
1703 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1704 this, SLOT(updateTabTexts()));
1705 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1706 setFullScreen(true);
1708 // Hide tabbar if there's only one tab.
1709 showBar(count() > 1);
1717 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1719 LASSERT(work_area, return false);
1720 int index = indexOf(work_area);
1724 work_area->setUpdatesEnabled(false);
1729 // make sure the next work area is enabled.
1730 currentWidget()->setUpdatesEnabled(true);
1731 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1732 setFullScreen(true);
1734 // Show tabbar only if there's more than one tab.
1735 showBar(count() > 1);
1737 lastWorkAreaRemoved();
1745 void TabWorkArea::on_currentTabChanged(int i)
1747 // returns e.g. on application destruction
1750 GuiWorkArea * wa = workArea(i);
1751 LASSERT(wa, return);
1752 wa->setUpdatesEnabled(true);
1756 currentWorkAreaChanged(wa);
1758 LYXERR(Debug::GUI, "currentTabChanged " << i
1759 << " File: " << wa->bufferView().buffer().absFileName());
1763 void TabWorkArea::closeCurrentBuffer()
1766 if (clicked_tab_ == -1)
1767 wa = currentWorkArea();
1769 wa = workArea(clicked_tab_);
1770 LASSERT(wa, return);
1772 wa->view().closeWorkArea(wa);
1776 void TabWorkArea::hideCurrentTab()
1779 if (clicked_tab_ == -1)
1780 wa = currentWorkArea();
1782 wa = workArea(clicked_tab_);
1783 LASSERT(wa, return);
1785 wa->view().hideWorkArea(wa);
1789 void TabWorkArea::closeTab(int index)
1791 on_currentTabChanged(index);
1794 wa = currentWorkArea();
1796 wa = workArea(index);
1797 LASSERT(wa, return);
1799 wa->view().closeWorkArea(wa);
1806 /// make vector happy
1809 DisplayPath(int tab, FileName const & filename)
1812 filename_ = (filename.extension() == "lyx") ?
1813 toqstr(filename.onlyFileNameWithoutExt())
1814 : toqstr(filename.onlyFileName());
1815 postfix_ = toqstr(filename.absoluteFilePath()).
1816 split("/", QString::SkipEmptyParts);
1817 postfix_.pop_back();
1818 abs_ = toqstr(filename.absoluteFilePath());
1819 dottedPrefix_ = false;
1822 /// Absolute path for debugging.
1827 /// Add the first segment from the postfix or three dots to the prefix.
1828 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1829 /// when really needed.
1830 void shiftPathSegment(bool dotted)
1832 if (postfix_.count() <= 0)
1836 if (dottedPrefix_ && !prefix_.isEmpty())
1838 prefix_ += postfix_.front() + "/";
1840 dottedPrefix_ = dotted && !prefix_.isEmpty();
1841 postfix_.pop_front();
1844 QString displayString() const
1846 if (prefix_.isEmpty())
1849 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1850 return prefix_ + (dots ? ".../" : "") + filename_;
1853 QString forecastPathString() const
1855 if (postfix_.count() == 0)
1856 return displayString();
1859 + (dottedPrefix_ ? ".../" : "")
1860 + postfix_.front() + "/";
1863 bool final() const { return postfix_.empty(); }
1865 int tab() const { return tab_; }
1871 QStringList postfix_;
1884 bool operator<(DisplayPath const & a, DisplayPath const & b)
1886 return a.displayString() < b.displayString();
1890 bool operator==(DisplayPath const & a, DisplayPath const & b)
1892 return a.displayString() == b.displayString();
1896 void TabWorkArea::updateTabTexts()
1901 std::list<DisplayPath> paths;
1902 typedef std::list<DisplayPath>::iterator It;
1904 // collect full names first: path into postfix, empty prefix and
1905 // filename without extension
1906 for (size_t i = 0; i < n; ++i) {
1907 GuiWorkArea * i_wa = workArea(i);
1908 FileName const fn = i_wa->bufferView().buffer().fileName();
1909 paths.push_back(DisplayPath(i, fn));
1912 // go through path segments and see if it helps to make the path more unique
1913 bool somethingChanged = true;
1914 bool allFinal = false;
1915 while (somethingChanged && !allFinal) {
1916 // adding path segments changes order
1919 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1920 somethingChanged = false;
1923 // find segments which are not unique (i.e. non-atomic)
1924 It it = paths.begin();
1926 QString segString = it->displayString();
1927 for (; it != paths.end(); ++it) {
1928 // look to the next item
1933 allFinal = allFinal && it->final();
1935 LYXERR(Debug::GUI, "it = " << it->abs()
1936 << " => " << it->displayString());
1938 // still the same segment?
1940 if ((next != paths.end()
1941 && (nextString = next->displayString()) == segString))
1943 LYXERR(Debug::GUI, "segment ended");
1945 // only a trivial one with one element?
1946 if (it == segStart) {
1947 // start new segment
1949 segString = nextString;
1953 // we found a non-atomic segment segStart <= sit <= it < next.
1954 // Shift path segments and hope for the best
1955 // that it makes the path more unique.
1956 somethingChanged = true;
1958 QString dspString = sit->forecastPathString();
1959 LYXERR(Debug::GUI, "first forecast found for "
1960 << sit->abs() << " => " << dspString);
1962 bool moreUnique = false;
1963 for (; sit != next; ++sit) {
1964 if (sit->forecastPathString() != dspString) {
1965 LYXERR(Debug::GUI, "different forecast found for "
1966 << sit->abs() << " => " << sit->forecastPathString());
1970 LYXERR(Debug::GUI, "same forecast found for "
1971 << sit->abs() << " => " << dspString);
1974 // if the path segment helped, add it. Otherwise add dots
1975 bool dots = !moreUnique;
1976 LYXERR(Debug::GUI, "using dots = " << dots);
1977 for (sit = segStart; sit != next; ++sit) {
1978 sit->shiftPathSegment(dots);
1979 LYXERR(Debug::GUI, "shifting "
1980 << sit->abs() << " => " << sit->displayString());
1983 // start new segment
1985 segString = nextString;
1989 // set new tab titles
1990 for (It it = paths.begin(); it != paths.end(); ++it) {
1991 int const tab_index = it->tab();
1992 Buffer const & buf = workArea(tab_index)->bufferView().buffer();
1993 QString tab_text = it->displayString().replace("&", "&&");
1994 if (!buf.fileName().empty() && !buf.isClean())
1996 setTabText(tab_index, tab_text);
1997 setTabToolTip(tab_index, it->abs());
2002 void TabWorkArea::showContextMenu(const QPoint & pos)
2005 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
2006 if (clicked_tab_ == -1)
2011 popup.addAction(QIcon(getPixmap("images/", "hidetab", "png")),
2012 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
2013 popup.addAction(QIcon(getPixmap("images/", "closetab", "png")),
2014 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
2015 popup.exec(tabBar()->mapToGlobal(pos));
2021 void TabWorkArea::moveTab(int fromIndex, int toIndex)
2023 QWidget * w = widget(fromIndex);
2024 QIcon icon = tabIcon(fromIndex);
2025 QString text = tabText(fromIndex);
2027 setCurrentIndex(fromIndex);
2028 removeTab(fromIndex);
2029 insertTab(toIndex, w, icon, text);
2030 setCurrentIndex(toIndex);
2034 DragTabBar::DragTabBar(QWidget* parent)
2037 setAcceptDrops(true);
2038 setTabsClosable(!lyxrc.single_close_tab_button);
2042 void DragTabBar::mousePressEvent(QMouseEvent * event)
2044 if (event->button() == Qt::LeftButton)
2045 dragStartPos_ = event->pos();
2046 QTabBar::mousePressEvent(event);
2050 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
2052 // If the left button isn't pressed anymore then return
2053 if (!(event->buttons() & Qt::LeftButton))
2056 // If the distance is too small then return
2057 if ((event->pos() - dragStartPos_).manhattanLength()
2058 < QApplication::startDragDistance())
2061 // did we hit something after all?
2062 int tab = tabAt(dragStartPos_);
2066 // simulate button release to remove highlight from button
2067 int i = currentIndex();
2068 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
2069 event->button(), event->buttons(), 0);
2070 QTabBar::mouseReleaseEvent(&me);
2074 QDrag * drag = new QDrag(this);
2075 QMimeData * mimeData = new QMimeData;
2076 // a crude way to distinguish tab-reodering drops from other ones
2077 mimeData->setData("action", "tab-reordering") ;
2078 drag->setMimeData(mimeData);
2080 // get tab pixmap as cursor
2081 QRect r = tabRect(tab);
2082 QPixmap pixmap(r.size());
2083 render(&pixmap, - r.topLeft());
2084 drag->setPixmap(pixmap);
2089 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
2091 // Only accept if it's an tab-reordering request
2092 QMimeData const * m = event->mimeData();
2093 QStringList formats = m->formats();
2094 if (formats.contains("action")
2095 && m->data("action") == "tab-reordering")
2096 event->acceptProposedAction();
2100 void DragTabBar::dropEvent(QDropEvent * event)
2102 int fromIndex = tabAt(dragStartPos_);
2103 int toIndex = tabAt(event->pos());
2105 // Tell interested objects that
2106 if (fromIndex != toIndex)
2107 tabMoveRequested(fromIndex, toIndex);
2108 event->acceptProposedAction();
2112 } // namespace frontend
2115 #include "moc_GuiWorkArea.cpp"