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"
16 #include "ColorCache.h"
17 #include "FontLoader.h"
21 #include "BufferList.h"
22 #include "BufferParams.h"
23 #include "BufferView.h"
24 #include "CoordCache.h"
27 #include "FuncRequest.h"
28 #include "GuiApplication.h"
29 #include "GuiCompleter.h"
30 #include "GuiKeySymbol.h"
31 #include "GuiPainter.h"
33 #include "KeySymbol.h"
38 #include "qt_helpers.h"
40 #include "TextMetrics.h"
43 #include "graphics/GraphicsImage.h"
44 #include "graphics/GraphicsLoader.h"
46 #include "support/convert.h"
47 #include "support/debug.h"
48 #include "support/gettext.h"
49 #include "support/FileName.h"
51 #include "frontends/Application.h"
52 #include "frontends/FontMetrics.h"
53 #include "frontends/WorkAreaManager.h"
55 #include <QContextMenuEvent>
56 #include <QInputContext>
61 #include <QMainWindow>
65 #include <QPixmapCache>
68 #include <QToolButton>
72 #include "support/bind.h"
76 int const TabIndicatorWidth = 3;
82 using namespace lyx::support;
87 /// return the LyX mouse button state from Qt's
88 static mouse_button::state q_button_state(Qt::MouseButton button)
90 mouse_button::state b = mouse_button::none;
93 b = mouse_button::button1;
96 b = mouse_button::button2;
99 b = mouse_button::button3;
108 /// return the LyX mouse button state from Qt's
109 mouse_button::state q_motion_state(Qt::MouseButtons state)
111 mouse_button::state b = mouse_button::none;
112 if (state & Qt::LeftButton)
113 b |= mouse_button::button1;
114 if (state & Qt::MidButton)
115 b |= mouse_button::button2;
116 if (state & Qt::RightButton)
117 b |= mouse_button::button3;
130 void draw(QPainter & painter)
132 if (!show_ || !rect_.isValid())
136 int l = x_ - rect_.left();
137 int r = rect_.right() - x_;
138 int bot = rect_.bottom();
140 // draw vertical line
141 painter.fillRect(x_, y, cursor_width_, rect_.height(), color_);
143 // draw RTL/LTR indication
144 painter.setPen(color_);
147 painter.drawLine(x_, bot, x_ - l, bot);
149 painter.drawLine(x_, bot, x_ + cursor_width_ + r, bot);
152 // draw completion triangle
154 int m = y + rect_.height() / 2;
155 int d = TabIndicatorWidth - 1;
157 painter.drawLine(x_ - 1, m - d, x_ - 1 - d, m);
158 painter.drawLine(x_ - 1, m + d, x_ - 1 - d, m);
160 painter.drawLine(x_ + cursor_width_, m - d, x_ + cursor_width_ + d, m);
161 painter.drawLine(x_ + cursor_width_, m + d, x_ + cursor_width_ + d, m);
166 void update(int x, int y, int h, bool l_shape,
167 bool rtl, bool completable)
169 color_ = guiApp->colorCache().get(Color_cursor);
172 completable_ = completable;
175 // extension to left and right
179 // RTL/LTR indication
187 // completion triangle
190 l = max(l, TabIndicatorWidth);
192 r = max(r, TabIndicatorWidth);
195 // compute overall rectangle
196 rect_ = QRect(x - l, y, cursor_width_ + r + l, h);
199 void show(bool set_show = true) { show_ = set_show; }
200 void hide() { show_ = false; }
201 int cursorWidth() const { return cursor_width_; }
202 void recomputeWidth() {
203 cursor_width_ = lyxrc.cursor_width
205 : 1 + int((lyxrc.zoom + 50) / 200.0);
208 QRect const & rect() { return rect_; }
211 /// cursor is in RTL or LTR text
213 /// indication for RTL or LTR
215 /// triangle to show that a completion is available
221 /// rectangle, possibly with l_shape and completion triangle
223 /// x position (were the vertical line is drawn)
230 // This is a 'heartbeat' generating synthetic mouse move events when the
231 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
232 SyntheticMouseEvent::SyntheticMouseEvent()
233 : timeout(200), restart_timeout(true)
237 GuiWorkArea::GuiWorkArea(QWidget *)
238 : buffer_view_(0), lyx_view_(0),
239 cursor_visible_(false),
240 need_resize_(false), schedule_redraw_(false),
241 preedit_lines_(1), completer_(new GuiCompleter(this, this))
246 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
247 : buffer_view_(0), read_only_(buffer.isReadonly()), lyx_view_(0),
248 cursor_visible_(false),
249 need_resize_(false), schedule_redraw_(false),
250 preedit_lines_(1), completer_(new GuiCompleter(this, this))
258 void GuiWorkArea::init()
261 connect(&cursor_timeout_, SIGNAL(timeout()),
262 this, SLOT(toggleCursor()));
264 int const time = QApplication::cursorFlashTime() / 2;
266 cursor_timeout_.setInterval(time);
267 cursor_timeout_.start();
269 // let's initialize this just to be safe
270 cursor_timeout_.setInterval(500);
273 screen_ = QPixmap(viewport()->width(), viewport()->height());
274 // With Qt4.5 a mouse event will happen before the first paint event
275 // so make sure that the buffer view has an up to date metrics.
276 buffer_view_->resize(viewport()->width(), viewport()->height());
277 cursor_ = new frontend::CursorWidget();
280 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
281 setAcceptDrops(true);
282 setMouseTracking(true);
283 setMinimumSize(100, 70);
284 setFrameStyle(QFrame::NoFrame);
287 viewport()->setAutoFillBackground(false);
288 // We don't need double-buffering nor SystemBackground on
289 // the viewport because we have our own backing pixmap.
290 viewport()->setAttribute(Qt::WA_NoSystemBackground);
292 setFocusPolicy(Qt::StrongFocus);
294 setCursorShape(Qt::IBeamCursor);
296 synthetic_mouse_event_.timeout.timeout.connect(
297 bind(&GuiWorkArea::generateSyntheticMouseEvent,
300 // Initialize the vertical Scroll Bar
301 QObject::connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
302 this, SLOT(scrollTo(int)));
304 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
305 << " viewport height: " << viewport()->height());
307 // Enables input methods for asian languages.
308 // Must be set when creating custom text editing widgets.
309 setAttribute(Qt::WA_InputMethodEnabled, true);
311 dialog_mode_ = false;
315 GuiWorkArea::~GuiWorkArea()
317 buffer_view_->buffer().workAreaManager().remove(this);
320 // Completer has a QObject parent and is thus automatically destroyed.
322 // delete completer_;
326 Qt::CursorShape GuiWorkArea::cursorShape() const
328 return viewport()->cursor().shape();
332 void GuiWorkArea::setCursorShape(Qt::CursorShape shape)
334 viewport()->setCursor(shape);
338 void GuiWorkArea::updateCursorShape()
340 setCursorShape(buffer_view_->clickableInset()
341 ? Qt::PointingHandCursor : Qt::IBeamCursor);
345 void GuiWorkArea::setGuiView(GuiView & gv)
351 void GuiWorkArea::setBuffer(Buffer & buffer)
354 buffer_view_ = new BufferView(buffer);
355 buffer.workAreaManager().add(this);
357 // HACK: Prevents an additional redraw when the scrollbar pops up
358 // which regularily happens on documents with more than one page.
359 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
360 // Since we have no geometry information yet, we assume that
361 // a document needs a scrollbar if there is more then four
362 // paragraph in the outermost text.
363 if (buffer.text().paragraphs().size() > 4)
364 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
365 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
369 void GuiWorkArea::fixVerticalScrollBar()
372 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
376 void GuiWorkArea::close()
378 lyx_view_->removeWorkArea(this);
382 void GuiWorkArea::setFullScreen(bool full_screen)
384 buffer_view_->setFullScreen(full_screen);
385 setFrameStyle(QFrame::NoFrame);
387 setFrameStyle(QFrame::NoFrame);
388 if (lyxrc.full_screen_scrollbar)
389 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
391 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
395 BufferView & GuiWorkArea::bufferView()
397 return *buffer_view_;
401 BufferView const & GuiWorkArea::bufferView() const
403 return *buffer_view_;
407 void GuiWorkArea::stopBlinkingCursor()
409 cursor_timeout_.stop();
414 void GuiWorkArea::startBlinkingCursor()
416 // do not show the cursor if the view is busy
422 buffer_view_->cursorPosAndHeight(p, h);
423 // Don't start blinking if the cursor isn't on screen.
424 if (!buffer_view_->cursorInView(p, h))
429 //we're not supposed to cache this value.
430 int const time = QApplication::cursorFlashTime() / 2;
433 cursor_timeout_.setInterval(time);
434 cursor_timeout_.start();
438 void GuiWorkArea::redraw(bool update_metrics)
441 // No need to redraw in this case.
444 // No need to do anything if this is the current view. The BufferView
445 // metrics are already up to date.
446 if (update_metrics || lyx_view_ != guiApp->currentView()
447 || lyx_view_->currentWorkArea() != this) {
448 // FIXME: it would be nice to optimize for the off-screen case.
449 buffer_view_->cursor().fixIfBroken();
450 buffer_view_->updateMetrics();
451 buffer_view_->cursor().fixIfBroken();
454 // update cursor position, because otherwise it has to wait until
455 // the blinking interval is over
456 if (cursor_visible_) {
461 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
463 update(0, 0, viewport()->width(), viewport()->height());
465 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
466 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
468 lyx_view_->updateStatusBar();
470 if (lyxerr.debugging(Debug::WORKAREA))
471 buffer_view_->coordCache().dump();
473 setReadOnly(buffer_view_->buffer().isReadonly());
479 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
481 if (lyx_view_->isFullScreen() && lyx_view_->menuBar()->isVisible()
482 && lyxrc.full_screen_menubar) {
483 // FIXME HACK: we should not have to do this here. See related comment
484 // in GuiView::event() (QEvent::ShortcutOverride)
485 lyx_view_->menuBar()->hide();
488 // In order to avoid bad surprise in the middle of an operation,
489 // we better stop the blinking cursor...
490 // the cursor gets restarted in GuiView::restartCursor()
491 stopBlinkingCursor();
492 guiApp->processKeySym(key, mod);
496 void GuiWorkArea::dispatch(FuncRequest const & cmd0, KeyModifier mod)
499 if (cmd0.action() == LFUN_FILE_OPEN) {
501 lyx_view_->dispatch(cmd0, dr);
507 if (cmd0.action() == LFUN_MOUSE_PRESS) {
508 if (mod == ShiftModifier)
509 cmd = FuncRequest(cmd0, "region-select");
510 else if (mod == ControlModifier)
511 cmd = FuncRequest(cmd0, "paragraph-select");
518 bool const notJustMovingTheMouse =
519 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
521 // In order to avoid bad surprise in the middle of an operation, we better stop
522 // the blinking cursor.
523 if (notJustMovingTheMouse)
524 stopBlinkingCursor();
526 buffer_view_->mouseEventDispatch(cmd);
528 // Skip these when selecting
529 if (cmd.action() != LFUN_MOUSE_MOTION) {
530 completer_->updateVisibility(false, false);
531 lyx_view_->updateDialogs();
532 lyx_view_->updateStatusBar();
535 // GUI tweaks except with mouse motion with no button pressed.
536 if (notJustMovingTheMouse) {
537 // Slight hack: this is only called currently when we
538 // clicked somewhere, so we force through the display
539 // of the new status here.
540 lyx_view_->clearMessage();
542 // Show the cursor immediately after any operation
543 startBlinkingCursor();
550 void GuiWorkArea::resizeBufferView()
552 // WARNING: Please don't put any code that will trigger a repaint here!
553 // We are already inside a paint event.
554 lyx_view_->setBusy(true);
557 buffer_view_->cursorPosAndHeight(p, h);
558 bool const cursor_in_view = buffer_view_->cursorInView(p, h);
559 buffer_view_->resize(viewport()->width(), viewport()->height());
561 buffer_view_->scrollToCursor();
564 // Update scrollbars which might have changed due different
565 // BufferView dimension. This is especially important when the
566 // BufferView goes from zero-size to the real-size for the first time,
567 // as the scrollbar paramters are then set for the first time.
570 lyx_view_->updateLayoutList();
571 lyx_view_->setBusy(false);
572 need_resize_ = false;
576 void GuiWorkArea::showCursor()
583 buffer_view_->cursorPosAndHeight(p, h);
584 if (!buffer_view_->cursorInView(p, h))
588 bool l_shape = false;
589 Font const & realfont = buffer_view_->cursor().real_current_font;
590 BufferParams const & bp = buffer_view_->buffer().params();
591 bool const samelang = realfont.language() == bp.language;
592 bool const isrtl = realfont.isVisibleRightToLeft();
594 if (!samelang || isrtl != bp.language->rightToLeft())
597 // The ERT language hack needs fixing up
598 if (realfont.language() == latex_language)
601 // show cursor on screen
602 Cursor & cur = buffer_view_->cursor();
603 bool completable = cur.inset().showCompletionCursor()
604 && completer_->completionAvailable()
605 && !completer_->popupVisible()
606 && !completer_->inlineVisible();
607 cursor_visible_ = true;
608 cursor_->recomputeWidth();
609 showCursor(p.x_, p.y_, h, l_shape, isrtl, completable);
613 void GuiWorkArea::hideCursor()
615 if (!cursor_visible_)
618 cursor_visible_ = false;
623 void GuiWorkArea::toggleCursor()
632 void GuiWorkArea::updateScrollbar()
634 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
635 // WARNING: don't touch at the scrollbar value like this:
636 // verticalScrollBar()->setValue(scroll_.position);
637 // because this would cause a recursive signal/slot calling with
638 // GuiWorkArea::scrollTo
639 verticalScrollBar()->setRange(scroll_.min, scroll_.max);
640 verticalScrollBar()->setPageStep(scroll_.page_step);
641 verticalScrollBar()->setSingleStep(scroll_.single_step);
642 verticalScrollBar()->setSliderPosition(scroll_.position);
646 void GuiWorkArea::scrollTo(int value)
648 stopBlinkingCursor();
649 buffer_view_->scrollDocView(value, true);
651 if (lyxrc.cursor_follows_scrollbar) {
652 buffer_view_->setCursorFromScrollbar();
653 lyx_view_->updateLayoutList();
655 // Show the cursor immediately after any operation.
656 startBlinkingCursor();
657 QApplication::syncX();
661 bool GuiWorkArea::event(QEvent * e)
664 case QEvent::ToolTip: {
665 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
666 if (lyxrc.use_tooltip) {
667 QPoint pos = helpEvent->pos();
668 if (pos.x() < viewport()->width()) {
669 QString s = toqstr(buffer_view_->toolTip(pos.x(), pos.y()));
670 QToolTip::showText(helpEvent->globalPos(), s);
673 QToolTip::hideText();
675 // Don't forget to accept the event!
680 case QEvent::ShortcutOverride: {
681 // We catch this event in order to catch the Tab or Shift+Tab key press
682 // which are otherwise reserved to focus switching between controls
684 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
685 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
686 || (ke->key() == Qt::Key_Backtab && (
687 ke->modifiers() == Qt::ShiftModifier
688 || ke->modifiers() == Qt::NoModifier))) {
692 return QAbstractScrollArea::event(e);
696 return QAbstractScrollArea::event(e);
702 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
705 if (e->reason() == QContextMenuEvent::Mouse)
706 // the menu name is set on mouse press
707 name = context_menu_name_;
709 QPoint pos = e->pos();
710 Cursor const & cur = buffer_view_->cursor();
711 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
712 // Do not access the context menu of math right in front of before
713 // the cursor. This does not work when the cursor is in text.
714 Inset * inset = cur.paragraph().getInset(cur.pos());
715 if (inset && inset->asInsetMath())
717 else if (cur.pos() > 0) {
718 Inset * inset = cur.paragraph().getInset(cur.pos() - 1);
723 name = buffer_view_->contextMenu(pos.x(), pos.y());
727 QAbstractScrollArea::contextMenuEvent(e);
730 // always show mnemonics when the keyboard is used to show the context menu
731 // FIXME: This should be fixed in Qt itself
732 bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
733 QMenu * menu = guiApp->menus().menu(toqstr(name), *lyx_view_, keyboard);
735 QAbstractScrollArea::contextMenuEvent(e);
738 // Position the menu to the right.
739 // FIXME: menu position should be different for RTL text.
740 menu->exec(e->globalPos());
745 void GuiWorkArea::focusInEvent(QFocusEvent * e)
747 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
748 if (lyx_view_->currentWorkArea() != this)
749 lyx_view_->setCurrentWorkArea(this);
751 startBlinkingCursor();
752 QAbstractScrollArea::focusInEvent(e);
756 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
758 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
759 stopBlinkingCursor();
760 QAbstractScrollArea::focusOutEvent(e);
764 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
766 if (dc_event_.active && dc_event_ == *e) {
767 dc_event_.active = false;
768 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
769 q_button_state(e->button()));
775 // Save the context menu on mouse press, because also the mouse
776 // cursor is set on mouse press. Afterwards, we can either release
777 // the mousebutton somewhere else, or the cursor might have moved
779 if (e->button() == Qt::RightButton)
780 context_menu_name_ = buffer_view_->contextMenu(e->x(), e->y());
782 inputContext()->reset();
784 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
785 q_button_state(e->button()));
786 dispatch(cmd, q_key_state(e->modifiers()));
791 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
793 if (synthetic_mouse_event_.timeout.running())
794 synthetic_mouse_event_.timeout.stop();
796 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
797 q_button_state(e->button()));
803 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
805 // we kill the triple click if we move
806 doubleClickTimeout();
807 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
808 q_motion_state(e->buttons()));
812 // If we're above or below the work area...
813 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
814 && e->buttons() == mouse_button::button1) {
815 // Make sure only a synthetic event can cause a page scroll,
816 // so they come at a steady rate:
818 // _Force_ a scroll up:
819 cmd.set_y(e->y() - 21);
821 cmd.set_y(e->y() + 21);
822 // Store the event, to be handled when the timeout expires.
823 synthetic_mouse_event_.cmd = cmd;
825 if (synthetic_mouse_event_.timeout.running()) {
826 // Discard the event. Note that it _may_ be handled
827 // when the timeout expires if
828 // synthetic_mouse_event_.cmd has not been overwritten.
829 // Ie, when the timeout expires, we handle the
830 // most recent event but discard all others that
831 // occurred after the one used to start the timeout
832 // in the first place.
836 synthetic_mouse_event_.restart_timeout = true;
837 synthetic_mouse_event_.timeout.start();
838 // Fall through to handle this event...
840 } else if (synthetic_mouse_event_.timeout.running()) {
841 // Store the event, to be possibly handled when the timeout
843 // Once the timeout has expired, normal control is returned
844 // to mouseMoveEvent (restart_timeout = false).
845 // This results in a much smoother 'feel' when moving the
846 // mouse back into the work area.
847 synthetic_mouse_event_.cmd = cmd;
848 synthetic_mouse_event_.restart_timeout = false;
855 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
857 // Wheel rotation by one notch results in a delta() of 120 (see
858 // documentation of QWheelEvent)
859 double const delta = ev->delta() / 120.0;
861 switch (lyxrc.scroll_wheel_zoom) {
862 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
863 zoom = ev->modifiers() & Qt::ControlModifier;
864 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
866 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
867 zoom = ev->modifiers() & Qt::ShiftModifier;
868 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
870 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
871 zoom = ev->modifiers() & Qt::AltModifier;
872 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
874 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
878 docstring arg = convert<docstring>(int(5 * delta));
879 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
883 // Take into account the desktop wide settings.
884 int const lines = qApp->wheelScrollLines();
885 int const page_step = verticalScrollBar()->pageStep();
886 // Test if the wheel mouse is set to one screen at a time.
887 int scroll_value = lines > page_step
888 ? page_step : lines * verticalScrollBar()->singleStep();
890 // Take into account the rotation and the user preferences.
891 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
892 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
893 << " delta = " << delta << " scroll_value = " << scroll_value
894 << " page_step = " << page_step);
896 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
902 void GuiWorkArea::generateSyntheticMouseEvent()
904 int const e_y = synthetic_mouse_event_.cmd.y();
905 int const wh = buffer_view_->workHeight();
906 bool const up = e_y < 0;
907 bool const down = e_y > wh;
909 // Set things off to generate the _next_ 'pseudo' event.
911 if (synthetic_mouse_event_.restart_timeout) {
912 // This is some magic formulae to determine the speed
913 // of scrolling related to the position of the mouse.
916 int dist = up ? -e_y : e_y - wh;
917 time = max(min(200, 250000 / (dist * dist)), 1) ;
920 step = 80000 / (time * time);
924 synthetic_mouse_event_.timeout.setTimeout(time);
925 synthetic_mouse_event_.timeout.start();
928 // Can we scroll further ?
929 int const value = verticalScrollBar()->value();
930 if (value == verticalScrollBar()->maximum()
931 || value == verticalScrollBar()->minimum()) {
932 synthetic_mouse_event_.timeout.stop();
937 if (step <= 2 * wh) {
938 buffer_view_->scroll(up ? -step : step);
939 buffer_view_->updateMetrics();
941 buffer_view_->scrollDocView(value + up ? -step : step, false);
944 // In which paragraph do we have to set the cursor ?
945 Cursor & cur = buffer_view_->cursor();
946 // FIXME: we don't know howto handle math.
947 Text * text = cur.text();
950 TextMetrics const & tm = buffer_view_->textMetrics(text);
952 pair<pit_type, const ParagraphMetrics *> p = up ? tm.first() : tm.last();
953 ParagraphMetrics const & pm = *p.second;
954 pit_type const pit = p.first;
956 if (pm.rows().empty())
959 // Find the row at which we set the cursor.
960 RowList::const_iterator rit = pm.rows().begin();
961 RowList::const_iterator rlast = pm.rows().end();
962 int yy = pm.position() - pm.ascent();
963 for (--rlast; rit != rlast; ++rit) {
964 int h = rit->height();
965 if ((up && yy + h > 0)
966 || (!up && yy + h > wh - defaultRowHeight()))
971 // Find the position of the cursor
973 int x = synthetic_mouse_event_.cmd.x();
974 pos_type const pos = rit->pos() + tm.getColumnNearX(pit, *rit, x, bound);
981 buffer_view_->buffer().changed(false);
986 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
988 // Do not process here some keys if dialog_mode_ is set
990 && (ev->modifiers() == Qt::NoModifier
991 || ev->modifiers() == Qt::ShiftModifier)
992 && (ev->key() == Qt::Key_Escape
993 || ev->key() == Qt::Key_Enter
994 || ev->key() == Qt::Key_Return)
1000 // intercept some keys if completion popup is visible
1001 if (completer_->popupVisible()) {
1002 switch (ev->key()) {
1004 case Qt::Key_Return:
1005 completer_->activate();
1011 // do nothing if there are other events
1012 // (the auto repeated events come too fast)
1013 // it looks like this is only needed on X11
1015 if (qApp->hasPendingEvents() && ev->isAutoRepeat()) {
1016 LYXERR(Debug::KEY, "system is busy: keyPress event ignored");
1022 KeyModifier m = q_key_state(ev->modifiers());
1025 if (m & ShiftModifier)
1027 if (m & ControlModifier)
1029 if (m & AltModifier)
1031 if (m & MetaModifier)
1034 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1035 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
1036 << " keyState: " << str);
1039 setKeySymbol(&sym, ev);
1041 processKeySym(sym, q_key_state(ev->modifiers()));
1049 void GuiWorkArea::doubleClickTimeout()
1051 dc_event_.active = false;
1055 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1057 dc_event_ = DoubleClick(ev);
1058 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1059 SLOT(doubleClickTimeout()));
1060 FuncRequest cmd(LFUN_MOUSE_DOUBLE,
1062 q_button_state(ev->button()));
1068 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1070 QAbstractScrollArea::resizeEvent(ev);
1071 need_resize_ = true;
1076 void GuiWorkArea::update(int x, int y, int w, int h)
1078 viewport()->repaint(x, y, w, h);
1082 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1084 QRect const rc = ev->rect();
1085 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1086 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1089 screen_ = QPixmap(viewport()->width(), viewport()->height());
1091 if (cursor_visible_) {
1097 QPainter pain(viewport());
1098 pain.drawPixmap(rc, screen_, rc);
1099 cursor_->draw(pain);
1104 void GuiWorkArea::updateScreen()
1106 GuiPainter pain(&screen_);
1107 buffer_view_->draw(pain);
1111 void GuiWorkArea::showCursor(int x, int y, int h,
1112 bool l_shape, bool rtl, bool completable)
1114 if (schedule_redraw_) {
1115 // This happens when a graphic conversion is finished. As we don't know
1116 // the size of the new graphics, it's better the update everything.
1117 // We can't use redraw() here because this would trigger a infinite
1118 // recursive loop with showCursor().
1119 buffer_view_->resize(viewport()->width(), viewport()->height());
1122 viewport()->update(QRect(0, 0, viewport()->width(), viewport()->height()));
1123 schedule_redraw_ = false;
1124 // Show the cursor immediately after the update.
1130 cursor_->update(x, y, h, l_shape, rtl, completable);
1132 viewport()->update(cursor_->rect());
1136 void GuiWorkArea::removeCursor()
1139 //if (!qApp->focusWidget())
1140 viewport()->update(cursor_->rect());
1144 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1146 QString const & commit_string = e->commitString();
1147 docstring const & preedit_string
1148 = qstring_to_ucs4(e->preeditString());
1150 if (!commit_string.isEmpty()) {
1152 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1153 << " commitString: " << e->commitString());
1157 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
1158 for (int i = 0; i != commit_string.size(); ++i) {
1159 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
1164 // Hide the cursor during the kana-kanji transformation.
1165 if (preedit_string.empty())
1166 startBlinkingCursor();
1168 stopBlinkingCursor();
1170 // last_width : for checking if last preedit string was/wasn't empty.
1171 static bool last_width = false;
1172 if (!last_width && preedit_string.empty()) {
1173 // if last_width is last length of preedit string.
1178 GuiPainter pain(&screen_);
1179 buffer_view_->updateMetrics();
1180 buffer_view_->draw(pain);
1181 FontInfo font = buffer_view_->cursor().getFont().fontInfo();
1182 FontMetrics const & fm = theFontMetrics(font);
1183 int height = fm.maxHeight();
1184 int cur_x = cursor_->rect().left();
1185 int cur_y = cursor_->rect().bottom();
1187 // redraw area of preedit string.
1188 update(0, cur_y - height, viewport()->width(),
1189 (height + 1) * preedit_lines_);
1191 if (preedit_string.empty()) {
1199 // att : stores an IM attribute.
1200 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
1202 // get attributes of input method cursor.
1203 // cursor_pos : cursor position in preedit string.
1204 size_t cursor_pos = 0;
1205 bool cursor_is_visible = false;
1206 for (int i = 0; i != att.size(); ++i) {
1207 if (att.at(i).type == QInputMethodEvent::Cursor) {
1208 cursor_pos = att.at(i).start;
1209 cursor_is_visible = att.at(i).length != 0;
1214 size_t preedit_length = preedit_string.length();
1216 // get position of selection in input method.
1217 // FIXME: isn't there a way to do this simplier?
1218 // rStart : cursor position in selected string in IM.
1220 // rLength : selected string length in IM.
1222 if (cursor_pos < preedit_length) {
1223 for (int i = 0; i != att.size(); ++i) {
1224 if (att.at(i).type == QInputMethodEvent::TextFormat) {
1225 if (att.at(i).start <= int(cursor_pos)
1226 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
1227 rStart = att.at(i).start;
1228 rLength = att.at(i).length;
1229 if (!cursor_is_visible)
1230 cursor_pos += rLength;
1237 rStart = cursor_pos;
1241 int const right_margin = buffer_view_->rightMargin();
1242 Painter::preedit_style ps;
1243 // Most often there would be only one line:
1245 for (size_t pos = 0; pos != preedit_length; ++pos) {
1246 char_type const typed_char = preedit_string[pos];
1247 // reset preedit string style
1248 ps = Painter::preedit_default;
1250 // if we reached the right extremity of the screen, go to next line.
1251 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
1252 cur_x = right_margin;
1253 cur_y += height + 1;
1256 // preedit strings are displayed with dashed underline
1257 // and partial strings are displayed white on black indicating
1258 // that we are in selecting mode in the input method.
1259 // FIXME: rLength == preedit_length is not a changing condition
1260 // FIXME: should be put out of the loop.
1262 && pos < rStart + rLength
1263 && !(cursor_pos < rLength && rLength == preedit_length))
1264 ps = Painter::preedit_selecting;
1266 if (pos == cursor_pos
1267 && (cursor_pos < rLength && rLength == preedit_length))
1268 ps = Painter::preedit_cursor;
1270 // draw one character and update cur_x.
1271 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1274 // update the preedit string screen area.
1275 update(0, cur_y - preedit_lines_*height, viewport()->width(),
1276 (height + 1) * preedit_lines_);
1278 // Don't forget to accept the event!
1283 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1285 QRect cur_r(0, 0, 0, 0);
1287 // this is the CJK-specific composition window position and
1288 // the context menu position when the menu key is pressed.
1289 case Qt::ImMicroFocus:
1290 cur_r = cursor_->rect();
1291 if (preedit_lines_ != 1)
1293 cur_r.moveBottom(cur_r.bottom()
1294 + cur_r.height() * (preedit_lines_ - 1));
1295 // return lower right of cursor in LyX.
1298 return QWidget::inputMethodQuery(query);
1303 void GuiWorkArea::updateWindowTitle()
1305 docstring maximize_title;
1306 docstring minimize_title;
1308 Buffer const & buf = buffer_view_->buffer();
1309 FileName const file_name = buf.fileName();
1310 if (!file_name.empty()) {
1311 maximize_title = file_name.displayName(130);
1312 minimize_title = from_utf8(file_name.onlyFileName());
1313 if (buf.lyxvc().inUse()) {
1314 if (buf.lyxvc().locking())
1315 maximize_title += _(" (version control, locking)");
1317 maximize_title += _(" (version control)");
1319 if (!buf.isClean()) {
1320 maximize_title += _(" (changed)");
1321 minimize_title += char_type('*');
1323 if (buf.isReadonly())
1324 maximize_title += _(" (read only)");
1327 QString const new_title = toqstr(maximize_title);
1328 if (new_title != windowTitle()) {
1329 QWidget::setWindowTitle(new_title);
1330 QWidget::setWindowIconText(toqstr(minimize_title));
1336 void GuiWorkArea::setReadOnly(bool read_only)
1338 if (read_only_ == read_only)
1340 read_only_ = read_only;
1341 updateWindowTitle();
1342 if (this == lyx_view_->currentWorkArea())
1343 lyx_view_->updateDialogs();
1347 bool GuiWorkArea::isFullScreen()
1349 return lyx_view_ && lyx_view_->isFullScreen();
1353 ////////////////////////////////////////////////////////////////////
1357 ////////////////////////////////////////////////////////////////////
1360 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1362 buffer_ = theBufferList().newBuffer(
1363 support::FileName::tempName().absFileName() + "_embedded.internal");
1364 buffer_->setUnnamed(true);
1365 buffer_->setFullyLoaded(true);
1366 setBuffer(*buffer_);
1367 setDialogMode(true);
1371 EmbeddedWorkArea::~EmbeddedWorkArea()
1373 // No need to destroy buffer and bufferview here, because it is done
1374 // in theBufferList() destruction loop at application exit
1378 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1381 GuiWorkArea::closeEvent(ev);
1385 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1388 GuiWorkArea::hideEvent(ev);
1392 QSize EmbeddedWorkArea::sizeHint () const
1395 // GuiWorkArea sets the size to the screen's viewport
1396 // by returning a value this gets overridden
1397 // EmbeddedWorkArea is now sized to fit in the layout
1398 // of the parent, and has a minimum size set in GuiWorkArea
1399 // which is what we return here
1400 return QSize(100, 70);
1404 void EmbeddedWorkArea::disable()
1406 stopBlinkingCursor();
1407 if (view().currentWorkArea() != this)
1409 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1410 // tolerates it and shows the background logo), what happens if
1411 // an EmbeddedWorkArea is closed after closing all document WAs
1412 view().setCurrentWorkArea(view().currentMainWorkArea());
1415 ////////////////////////////////////////////////////////////////////
1419 ////////////////////////////////////////////////////////////////////
1422 class NoTabFrameMacStyle : public QMacStyle {
1425 QRect subElementRect(SubElement element, const QStyleOption * option,
1426 const QWidget * widget = 0) const
1428 QRect rect = QMacStyle::subElementRect(element, option, widget);
1429 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1431 // The Qt Mac style puts the contents into a 3 pixel wide box
1432 // which looks very ugly and not like other Mac applications.
1433 // Hence we remove this here, and moreover the 16 pixel round
1434 // frame above if the tab bar is hidden.
1435 if (element == QStyle::SE_TabWidgetTabContents) {
1436 rect.adjust(- rect.left(), 0, rect.left(), 0);
1445 NoTabFrameMacStyle noTabFrameMacStyle;
1449 TabWorkArea::TabWorkArea(QWidget * parent)
1450 : QTabWidget(parent), clicked_tab_(-1)
1453 setStyle(&noTabFrameMacStyle);
1455 #if QT_VERSION < 0x040500
1456 lyxrc.single_close_tab_button = true;
1459 QPalette pal = palette();
1460 pal.setColor(QPalette::Active, QPalette::Button,
1461 pal.color(QPalette::Active, QPalette::Window));
1462 pal.setColor(QPalette::Disabled, QPalette::Button,
1463 pal.color(QPalette::Disabled, QPalette::Window));
1464 pal.setColor(QPalette::Inactive, QPalette::Button,
1465 pal.color(QPalette::Inactive, QPalette::Window));
1467 QObject::connect(this, SIGNAL(currentChanged(int)),
1468 this, SLOT(on_currentTabChanged(int)));
1470 closeBufferButton = new QToolButton(this);
1471 closeBufferButton->setPalette(pal);
1472 // FIXME: rename the icon to closebuffer.png
1473 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "png")));
1474 closeBufferButton->setText("Close File");
1475 closeBufferButton->setAutoRaise(true);
1476 closeBufferButton->setCursor(Qt::ArrowCursor);
1477 closeBufferButton->setToolTip(qt_("Close File"));
1478 closeBufferButton->setEnabled(true);
1479 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1480 this, SLOT(closeCurrentBuffer()));
1481 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1483 // setup drag'n'drop
1484 QTabBar* tb = new DragTabBar;
1485 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1486 this, SLOT(moveTab(int, int)));
1487 tb->setElideMode(Qt::ElideNone);
1490 // make us responsible for the context menu of the tabbar
1491 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1492 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1493 this, SLOT(showContextMenu(const QPoint &)));
1494 #if QT_VERSION >= 0x040500
1495 connect(tb, SIGNAL(tabCloseRequested(int)),
1496 this, SLOT(closeTab(int)));
1499 setUsesScrollButtons(true);
1503 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1505 if (event->button() != Qt::LeftButton)
1508 // return early if double click on existing tabs
1509 for (int i = 0; i < count(); ++i)
1510 if (tabBar()->tabRect(i).contains(event->pos()))
1513 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1517 void TabWorkArea::setFullScreen(bool full_screen)
1519 for (int i = 0; i != count(); ++i) {
1520 if (GuiWorkArea * wa = workArea(i))
1521 wa->setFullScreen(full_screen);
1524 if (lyxrc.full_screen_tabbar)
1525 showBar(!full_screen && count() > 1);
1529 void TabWorkArea::showBar(bool show)
1531 tabBar()->setEnabled(show);
1532 tabBar()->setVisible(show);
1533 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1534 #if QT_VERSION >= 0x040500
1535 setTabsClosable(!lyxrc.single_close_tab_button);
1540 GuiWorkArea * TabWorkArea::currentWorkArea()
1545 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
1551 GuiWorkArea * TabWorkArea::workArea(int index)
1553 return dynamic_cast<GuiWorkArea *>(widget(index));
1557 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
1559 // FIXME: this method doesn't work if we have more than work area
1560 // showing the same buffer.
1561 for (int i = 0; i != count(); ++i) {
1562 GuiWorkArea * wa = workArea(i);
1563 LASSERT(wa, return 0);
1564 if (&wa->bufferView().buffer() == &buffer)
1571 void TabWorkArea::closeAll()
1574 GuiWorkArea * wa = workArea(0);
1582 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1584 LASSERT(work_area, /**/);
1585 int index = indexOf(work_area);
1589 if (index == currentIndex())
1590 // Make sure the work area is up to date.
1591 on_currentTabChanged(index);
1593 // Switch to the work area.
1594 setCurrentIndex(index);
1595 work_area->setFocus();
1601 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1603 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1604 wa->setUpdatesEnabled(false);
1605 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1606 // when hiding it again below).
1607 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1608 showBar(count() > 0);
1609 addTab(wa, wa->windowTitle());
1610 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1611 this, SLOT(updateTabTexts()));
1612 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1613 setFullScreen(true);
1615 // Hide tabbar if there's only one tab.
1616 showBar(count() > 1);
1624 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1626 LASSERT(work_area, return false);
1627 int index = indexOf(work_area);
1631 work_area->setUpdatesEnabled(false);
1636 // make sure the next work area is enabled.
1637 currentWidget()->setUpdatesEnabled(true);
1638 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1639 setFullScreen(true);
1641 // Show tabbar only if there's more than one tab.
1642 showBar(count() > 1);
1644 lastWorkAreaRemoved();
1652 void TabWorkArea::on_currentTabChanged(int i)
1654 // returns e.g. on application destruction
1657 GuiWorkArea * wa = workArea(i);
1658 LASSERT(wa, return);
1659 wa->setUpdatesEnabled(true);
1663 currentWorkAreaChanged(wa);
1665 LYXERR(Debug::GUI, "currentTabChanged " << i
1666 << " File: " << wa->bufferView().buffer().absFileName());
1670 void TabWorkArea::closeCurrentBuffer()
1673 if (clicked_tab_ == -1)
1674 wa = currentWorkArea();
1676 wa = workArea(clicked_tab_);
1679 wa->view().closeWorkArea(wa);
1683 void TabWorkArea::hideCurrentTab()
1686 if (clicked_tab_ == -1)
1687 wa = currentWorkArea();
1689 wa = workArea(clicked_tab_);
1692 wa->view().hideWorkArea(wa);
1696 void TabWorkArea::closeTab(int index)
1698 on_currentTabChanged(index);
1701 wa = currentWorkArea();
1703 wa = workArea(index);
1706 wa->view().closeWorkArea(wa);
1713 /// make vector happy
1716 DisplayPath(int tab, FileName const & filename)
1719 filename_ = (filename.extension() == "lyx") ?
1720 toqstr(filename.onlyFileNameWithoutExt())
1721 : toqstr(filename.onlyFileName());
1722 postfix_ = toqstr(filename.absoluteFilePath()).
1723 split("/", QString::SkipEmptyParts);
1724 postfix_.pop_back();
1725 abs_ = toqstr(filename.absoluteFilePath());
1726 dottedPrefix_ = false;
1729 /// Absolute path for debugging.
1734 /// Add the first segment from the postfix or three dots to the prefix.
1735 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1736 /// when really needed.
1737 void shiftPathSegment(bool dotted)
1739 if (postfix_.count() <= 0)
1743 if (dottedPrefix_ && !prefix_.isEmpty())
1745 prefix_ += postfix_.front() + "/";
1747 dottedPrefix_ = dotted && !prefix_.isEmpty();
1748 postfix_.pop_front();
1751 QString displayString() const
1753 if (prefix_.isEmpty())
1756 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1757 return prefix_ + (dots ? ".../" : "") + filename_;
1760 QString forecastPathString() const
1762 if (postfix_.count() == 0)
1763 return displayString();
1766 + (dottedPrefix_ ? ".../" : "")
1767 + postfix_.front() + "/";
1770 bool final() const { return postfix_.empty(); }
1772 int tab() const { return tab_; }
1778 QStringList postfix_;
1791 bool operator<(DisplayPath const & a, DisplayPath const & b)
1793 return a.displayString() < b.displayString();
1797 bool operator==(DisplayPath const & a, DisplayPath const & b)
1799 return a.displayString() == b.displayString();
1803 void TabWorkArea::updateTabTexts()
1808 std::list<DisplayPath> paths;
1809 typedef std::list<DisplayPath>::iterator It;
1811 // collect full names first: path into postfix, empty prefix and
1812 // filename without extension
1813 for (size_t i = 0; i < n; ++i) {
1814 GuiWorkArea * i_wa = workArea(i);
1815 FileName const fn = i_wa->bufferView().buffer().fileName();
1816 paths.push_back(DisplayPath(i, fn));
1819 // go through path segments and see if it helps to make the path more unique
1820 bool somethingChanged = true;
1821 bool allFinal = false;
1822 while (somethingChanged && !allFinal) {
1823 // adding path segments changes order
1826 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1827 somethingChanged = false;
1830 // find segments which are not unique (i.e. non-atomic)
1831 It it = paths.begin();
1833 QString segString = it->displayString();
1834 for (; it != paths.end(); ++it) {
1835 // look to the next item
1840 allFinal = allFinal && it->final();
1842 LYXERR(Debug::GUI, "it = " << it->abs()
1843 << " => " << it->displayString());
1845 // still the same segment?
1847 if ((next != paths.end()
1848 && (nextString = next->displayString()) == segString))
1850 LYXERR(Debug::GUI, "segment ended");
1852 // only a trivial one with one element?
1853 if (it == segStart) {
1854 // start new segment
1856 segString = nextString;
1860 // we found a non-atomic segment segStart <= sit <= it < next.
1861 // Shift path segments and hope for the best
1862 // that it makes the path more unique.
1863 somethingChanged = true;
1865 QString dspString = sit->forecastPathString();
1866 LYXERR(Debug::GUI, "first forecast found for "
1867 << sit->abs() << " => " << dspString);
1869 bool moreUnique = false;
1870 for (; sit != next; ++sit) {
1871 if (sit->forecastPathString() != dspString) {
1872 LYXERR(Debug::GUI, "different forecast found for "
1873 << sit->abs() << " => " << sit->forecastPathString());
1877 LYXERR(Debug::GUI, "same forecast found for "
1878 << sit->abs() << " => " << dspString);
1881 // if the path segment helped, add it. Otherwise add dots
1882 bool dots = !moreUnique;
1883 LYXERR(Debug::GUI, "using dots = " << dots);
1884 for (sit = segStart; sit != next; ++sit) {
1885 sit->shiftPathSegment(dots);
1886 LYXERR(Debug::GUI, "shifting "
1887 << sit->abs() << " => " << sit->displayString());
1890 // start new segment
1892 segString = nextString;
1896 // set new tab titles
1897 for (It it = paths.begin(); it != paths.end(); ++it) {
1898 int const tab_index = it->tab();
1899 Buffer const & buf = workArea(tab_index)->bufferView().buffer();
1900 QString tab_text = it->displayString();
1901 if (!buf.fileName().empty() && !buf.isClean())
1903 setTabText(tab_index, tab_text);
1904 setTabToolTip(tab_index, it->abs());
1909 void TabWorkArea::showContextMenu(const QPoint & pos)
1912 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
1913 if (clicked_tab_ == -1)
1918 popup.addAction(QIcon(getPixmap("images/", "hidetab", "png")),
1919 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
1920 popup.addAction(QIcon(getPixmap("images/", "closetab", "png")),
1921 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
1922 popup.exec(tabBar()->mapToGlobal(pos));
1928 void TabWorkArea::moveTab(int fromIndex, int toIndex)
1930 QWidget * w = widget(fromIndex);
1931 QIcon icon = tabIcon(fromIndex);
1932 QString text = tabText(fromIndex);
1934 setCurrentIndex(fromIndex);
1935 removeTab(fromIndex);
1936 insertTab(toIndex, w, icon, text);
1937 setCurrentIndex(toIndex);
1941 DragTabBar::DragTabBar(QWidget* parent)
1944 setAcceptDrops(true);
1945 #if QT_VERSION >= 0x040500
1946 setTabsClosable(!lyxrc.single_close_tab_button);
1951 #if QT_VERSION < 0x040300
1952 int DragTabBar::tabAt(QPoint const & position) const
1954 const int max = count();
1955 for (int i = 0; i < max; ++i) {
1956 if (tabRect(i).contains(position))
1964 void DragTabBar::mousePressEvent(QMouseEvent * event)
1966 if (event->button() == Qt::LeftButton)
1967 dragStartPos_ = event->pos();
1968 QTabBar::mousePressEvent(event);
1972 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
1974 // If the left button isn't pressed anymore then return
1975 if (!(event->buttons() & Qt::LeftButton))
1978 // If the distance is too small then return
1979 if ((event->pos() - dragStartPos_).manhattanLength()
1980 < QApplication::startDragDistance())
1983 // did we hit something after all?
1984 int tab = tabAt(dragStartPos_);
1988 // simulate button release to remove highlight from button
1989 int i = currentIndex();
1990 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
1991 event->button(), event->buttons(), 0);
1992 QTabBar::mouseReleaseEvent(&me);
1996 QDrag * drag = new QDrag(this);
1997 QMimeData * mimeData = new QMimeData;
1998 // a crude way to distinguish tab-reodering drops from other ones
1999 mimeData->setData("action", "tab-reordering") ;
2000 drag->setMimeData(mimeData);
2002 #if QT_VERSION >= 0x040300
2003 // get tab pixmap as cursor
2004 QRect r = tabRect(tab);
2005 QPixmap pixmap(r.size());
2006 render(&pixmap, - r.topLeft());
2007 drag->setPixmap(pixmap);
2010 drag->start(Qt::MoveAction);
2016 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
2018 // Only accept if it's an tab-reordering request
2019 QMimeData const * m = event->mimeData();
2020 QStringList formats = m->formats();
2021 if (formats.contains("action")
2022 && m->data("action") == "tab-reordering")
2023 event->acceptProposedAction();
2027 void DragTabBar::dropEvent(QDropEvent * event)
2029 int fromIndex = tabAt(dragStartPos_);
2030 int toIndex = tabAt(event->pos());
2032 // Tell interested objects that
2033 if (fromIndex != toIndex)
2034 tabMoveRequested(fromIndex, toIndex);
2035 event->acceptProposedAction();
2039 } // namespace frontend
2042 #include "moc_GuiWorkArea.cpp"