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"
77 int const CursorWidth = 2;
79 int const CursorWidth = 1;
81 int const TabIndicatorWidth = 3;
87 using namespace lyx::support;
92 /// return the LyX mouse button state from Qt's
93 static mouse_button::state q_button_state(Qt::MouseButton button)
95 mouse_button::state b = mouse_button::none;
98 b = mouse_button::button1;
101 b = mouse_button::button2;
103 case Qt::RightButton:
104 b = mouse_button::button3;
113 /// return the LyX mouse button state from Qt's
114 mouse_button::state q_motion_state(Qt::MouseButtons state)
116 mouse_button::state b = mouse_button::none;
117 if (state & Qt::LeftButton)
118 b |= mouse_button::button1;
119 if (state & Qt::MidButton)
120 b |= mouse_button::button2;
121 if (state & Qt::RightButton)
122 b |= mouse_button::button3;
133 void draw(QPainter & painter)
135 if (!show_ || !rect_.isValid())
139 int l = x_ - rect_.left();
140 int r = rect_.right() - x_;
141 int bot = rect_.bottom();
143 // draw vertica linel
144 painter.fillRect(x_, y, CursorWidth, rect_.height(), color_);
146 // draw RTL/LTR indication
147 painter.setPen(color_);
150 painter.drawLine(x_, bot, x_ - l, bot);
152 painter.drawLine(x_, bot, x_ + CursorWidth + r, bot);
155 // draw completion triangle
157 int m = y + rect_.height() / 2;
158 int d = TabIndicatorWidth - 1;
160 painter.drawLine(x_ - 1, m - d, x_ - 1 - d, m);
161 painter.drawLine(x_ - 1, m + d, x_ - 1 - d, m);
163 painter.drawLine(x_ + CursorWidth, m - d, x_ + CursorWidth + d, m);
164 painter.drawLine(x_ + CursorWidth, m + d, x_ + CursorWidth + d, m);
169 void update(int x, int y, int h, bool l_shape,
170 bool rtl, bool completable)
172 color_ = guiApp->colorCache().get(Color_cursor);
175 completable_ = completable;
178 // extension to left and right
182 // RTL/LTR indication
190 // completion triangle
193 l = max(l, TabIndicatorWidth);
195 r = max(r, TabIndicatorWidth);
198 // compute overall rectangle
199 rect_ = QRect(x - l, y, CursorWidth + r + l, h);
202 void show(bool set_show = true) { show_ = set_show; }
203 void hide() { show_ = false; }
205 QRect const & rect() { return rect_; }
208 /// cursor is in RTL or LTR text
210 /// indication for RTL or LTR
212 /// triangle to show that a completion is available
218 /// rectangle, possibly with l_shape and completion triangle
220 /// x position (were the vertical line is drawn)
225 // This is a 'heartbeat' generating synthetic mouse move events when the
226 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
227 SyntheticMouseEvent::SyntheticMouseEvent()
228 : timeout(200), restart_timeout(true)
232 GuiWorkArea::GuiWorkArea(QWidget *)
233 : buffer_view_(0), lyx_view_(0),
234 cursor_visible_(false),
235 need_resize_(false), schedule_redraw_(false),
236 preedit_lines_(1), completer_(new GuiCompleter(this, this)),
237 context_target_pos_()
242 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
243 : buffer_view_(0), read_only_(buffer.isReadonly()), lyx_view_(0),
244 cursor_visible_(false),
245 need_resize_(false), schedule_redraw_(false),
246 preedit_lines_(1), completer_(new GuiCompleter(this, this)),
247 context_target_pos_()
255 void GuiWorkArea::init()
258 connect(&cursor_timeout_, SIGNAL(timeout()),
259 this, SLOT(toggleCursor()));
261 int const time = QApplication::cursorFlashTime() / 2;
263 cursor_timeout_.setInterval(time);
264 cursor_timeout_.start();
266 // let's initialize this just to be safe
267 cursor_timeout_.setInterval(500);
270 screen_ = QPixmap(viewport()->width(), viewport()->height());
271 // With Qt4.5 a mouse event will happen before the first paint event
272 // so make sure that the buffer view has an up to date metrics.
273 buffer_view_->resize(viewport()->width(), viewport()->height());
274 cursor_ = new frontend::CursorWidget();
277 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
278 setAcceptDrops(true);
279 setMouseTracking(true);
280 setMinimumSize(100, 70);
281 setFrameStyle(QFrame::NoFrame);
284 viewport()->setAutoFillBackground(false);
285 // We don't need double-buffering nor SystemBackground on
286 // the viewport because we have our own backing pixmap.
287 viewport()->setAttribute(Qt::WA_NoSystemBackground);
289 setFocusPolicy(Qt::StrongFocus);
291 setCursorShape(Qt::IBeamCursor);
293 synthetic_mouse_event_.timeout.timeout.connect(
294 bind(&GuiWorkArea::generateSyntheticMouseEvent,
297 // Initialize the vertical Scroll Bar
298 QObject::connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
299 this, SLOT(scrollTo(int)));
301 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
302 << " viewport height: " << viewport()->height());
304 // Enables input methods for asian languages.
305 // Must be set when creating custom text editing widgets.
306 setAttribute(Qt::WA_InputMethodEnabled, true);
308 dialog_mode_ = false;
312 GuiWorkArea::~GuiWorkArea()
314 buffer_view_->buffer().workAreaManager().remove(this);
317 // Completer has a QObject parent and is thus automatically destroyed.
319 // delete completer_;
323 Qt::CursorShape GuiWorkArea::cursorShape() const
325 return viewport()->cursor().shape();
328 void GuiWorkArea::setCursorShape(Qt::CursorShape shape)
330 viewport()->setCursor(shape);
333 void GuiWorkArea::setGuiView(GuiView & gv)
339 void GuiWorkArea::setBuffer(Buffer & buffer)
342 buffer_view_ = new BufferView(buffer);
343 buffer.workAreaManager().add(this);
345 // HACK: Prevents an additional redraw when the scrollbar pops up
346 // which regularily happens on documents with more than one page.
347 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
348 // Since we have no geometry information yet, we assume that
349 // a document needs a scrollbar if there is more then four
350 // paragraph in the outermost text.
351 if (buffer.text().paragraphs().size() > 4)
352 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
353 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
357 void GuiWorkArea::fixVerticalScrollBar()
360 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
364 void GuiWorkArea::close()
366 lyx_view_->removeWorkArea(this);
370 void GuiWorkArea::setFullScreen(bool full_screen)
372 buffer_view_->setFullScreen(full_screen);
373 setFrameStyle(QFrame::NoFrame);
375 setFrameStyle(QFrame::NoFrame);
376 if (lyxrc.full_screen_scrollbar)
377 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
379 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
383 BufferView & GuiWorkArea::bufferView()
385 return *buffer_view_;
389 BufferView const & GuiWorkArea::bufferView() const
391 return *buffer_view_;
395 void GuiWorkArea::stopBlinkingCursor()
397 cursor_timeout_.stop();
402 void GuiWorkArea::startBlinkingCursor()
404 // do not show the cursor if the view is busy
410 buffer_view_->cursorPosAndHeight(p, h);
411 // Don't start blinking if the cursor isn't on screen.
412 if (!buffer_view_->cursorInView(p, h))
417 //we're not supposed to cache this value.
418 int const time = QApplication::cursorFlashTime() / 2;
421 cursor_timeout_.setInterval(time);
422 cursor_timeout_.start();
426 void GuiWorkArea::redraw(bool update_metrics)
429 // No need to redraw in this case.
432 // No need to do anything if this is the current view. The BufferView
433 // metrics are already up to date.
434 if (update_metrics || lyx_view_ != guiApp->currentView()
435 || lyx_view_->currentWorkArea() != this) {
436 // FIXME: it would be nice to optimize for the off-screen case.
437 buffer_view_->updateMetrics();
438 buffer_view_->cursor().fixIfBroken();
441 // update cursor position, because otherwise it has to wait until
442 // the blinking interval is over
443 if (cursor_visible_) {
448 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
450 update(0, 0, viewport()->width(), viewport()->height());
452 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
453 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
455 lyx_view_->updateStatusBar();
457 if (lyxerr.debugging(Debug::WORKAREA))
458 buffer_view_->coordCache().dump();
460 setReadOnly(buffer_view_->buffer().isReadonly());
464 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
466 if (lyx_view_->isFullScreen() && lyx_view_->menuBar()->isVisible()
467 && lyxrc.full_screen_menubar) {
468 // FIXME HACK: we should not have to do this here. See related comment
469 // in GuiView::event() (QEvent::ShortcutOverride)
470 lyx_view_->menuBar()->hide();
473 // In order to avoid bad surprise in the middle of an operation,
474 // we better stop the blinking cursor...
475 // the cursor gets restarted in GuiView::restartCursor()
476 stopBlinkingCursor();
477 guiApp->processKeySym(key, mod);
481 void GuiWorkArea::dispatch(FuncRequest const & cmd0, KeyModifier mod)
484 if (cmd0.action() == LFUN_FILE_OPEN) {
486 lyx_view_->dispatch(cmd0, dr);
492 if (cmd0.action() == LFUN_MOUSE_PRESS) {
493 if (mod == ShiftModifier)
494 cmd = FuncRequest(cmd0, "region-select");
495 else if (mod == ControlModifier)
496 cmd = FuncRequest(cmd0, "paragraph-select");
503 bool const notJustMovingTheMouse =
504 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
506 // In order to avoid bad surprise in the middle of an operation, we better stop
507 // the blinking cursor.
508 if (notJustMovingTheMouse)
509 stopBlinkingCursor();
511 buffer_view_->mouseEventDispatch(cmd);
513 // Skip these when selecting
514 if (cmd.action() != LFUN_MOUSE_MOTION) {
515 completer_->updateVisibility(false, false);
516 lyx_view_->updateDialogs();
517 lyx_view_->updateStatusBar();
520 // GUI tweaks except with mouse motion with no button pressed.
521 if (notJustMovingTheMouse) {
522 // Slight hack: this is only called currently when we
523 // clicked somewhere, so we force through the display
524 // of the new status here.
525 lyx_view_->clearMessage();
527 // Show the cursor immediately after any operation
528 startBlinkingCursor();
533 void GuiWorkArea::resizeBufferView()
535 // WARNING: Please don't put any code that will trigger a repaint here!
536 // We are already inside a paint event.
537 lyx_view_->setBusy(true);
540 buffer_view_->cursorPosAndHeight(p, h);
541 bool const cursor_in_view = buffer_view_->cursorInView(p, h);
542 buffer_view_->resize(viewport()->width(), viewport()->height());
544 buffer_view_->scrollToCursor();
547 // Update scrollbars which might have changed due different
548 // BufferView dimension. This is especially important when the
549 // BufferView goes from zero-size to the real-size for the first time,
550 // as the scrollbar paramters are then set for the first time.
553 lyx_view_->updateLayoutList();
554 lyx_view_->setBusy(false);
555 need_resize_ = false;
559 void GuiWorkArea::showCursor()
566 buffer_view_->cursorPosAndHeight(p, h);
567 if (!buffer_view_->cursorInView(p, h))
571 bool l_shape = false;
572 Font const & realfont = buffer_view_->cursor().real_current_font;
573 BufferParams const & bp = buffer_view_->buffer().params();
574 bool const samelang = realfont.language() == bp.language;
575 bool const isrtl = realfont.isVisibleRightToLeft();
577 if (!samelang || isrtl != bp.language->rightToLeft())
580 // The ERT language hack needs fixing up
581 if (realfont.language() == latex_language)
584 // show cursor on screen
585 Cursor & cur = buffer_view_->cursor();
586 bool completable = cur.inset().showCompletionCursor()
587 && completer_->completionAvailable()
588 && !completer_->popupVisible()
589 && !completer_->inlineVisible();
590 cursor_visible_ = true;
591 showCursor(p.x_, p.y_, h, l_shape, isrtl, completable);
595 void GuiWorkArea::hideCursor()
597 if (!cursor_visible_)
600 cursor_visible_ = false;
605 void GuiWorkArea::toggleCursor()
614 void GuiWorkArea::updateScrollbar()
616 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
617 // WARNING: don't touch at the scrollbar value like this:
618 // verticalScrollBar()->setValue(scroll_.position);
619 // because this would cause a recursive signal/slot calling with
620 // GuiWorkArea::scrollTo
621 verticalScrollBar()->setRange(scroll_.min, scroll_.max);
622 verticalScrollBar()->setPageStep(scroll_.page_step);
623 verticalScrollBar()->setSingleStep(scroll_.single_step);
624 verticalScrollBar()->setSliderPosition(scroll_.position);
628 void GuiWorkArea::scrollTo(int value)
630 stopBlinkingCursor();
631 buffer_view_->scrollDocView(value, true);
633 if (lyxrc.cursor_follows_scrollbar) {
634 buffer_view_->setCursorFromScrollbar();
635 lyx_view_->updateLayoutList();
637 // Show the cursor immediately after any operation.
638 startBlinkingCursor();
639 QApplication::syncX();
643 bool GuiWorkArea::event(QEvent * e)
646 case QEvent::ToolTip: {
647 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
648 if (lyxrc.use_tooltip) {
649 QPoint pos = helpEvent->pos();
650 if (pos.x() < viewport()->width()) {
651 QString s = toqstr(buffer_view_->toolTip(pos.x(), pos.y()));
652 QToolTip::showText(helpEvent->globalPos(), s);
655 QToolTip::hideText();
657 // Don't forget to accept the event!
662 case QEvent::ShortcutOverride: {
663 // We catch this event in order to catch the Tab or Shift+Tab key press
664 // which are otherwise reserved to focus switching between controls
666 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
667 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
668 || (ke->key() == Qt::Key_Backtab && (
669 ke->modifiers() == Qt::ShiftModifier
670 || ke->modifiers() == Qt::NoModifier))) {
674 return QAbstractScrollArea::event(e);
678 return QAbstractScrollArea::event(e);
684 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
687 if (e->reason() == QContextMenuEvent::Mouse)
688 // the position is set on mouse press
689 pos = context_target_pos_;
692 Cursor const & cur = buffer_view_->cursor();
693 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
694 // Do not access the context menu of math right in front of before
695 // the cursor. This does not work when the cursor is in text.
696 Inset * inset = cur.paragraph().getInset(cur.pos());
697 if (inset && inset->asInsetMath())
699 else if (cur.pos() > 0) {
700 Inset * inset = cur.paragraph().getInset(cur.pos() - 1);
705 docstring name = buffer_view_->contextMenu(pos.x(), pos.y());
707 QAbstractScrollArea::contextMenuEvent(e);
710 QMenu * menu = guiApp->menus().menu(toqstr(name), *lyx_view_);
712 QAbstractScrollArea::contextMenuEvent(e);
715 // Position the menu to the right.
716 // FIXME: menu position should be different for RTL text.
717 menu->exec(e->globalPos());
722 void GuiWorkArea::focusInEvent(QFocusEvent * e)
724 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
725 if (lyx_view_->currentWorkArea() != this)
726 lyx_view_->setCurrentWorkArea(this);
728 startBlinkingCursor();
729 QAbstractScrollArea::focusInEvent(e);
733 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
735 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
736 stopBlinkingCursor();
737 QAbstractScrollArea::focusOutEvent(e);
741 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
743 if (dc_event_.active && dc_event_ == *e) {
744 dc_event_.active = false;
745 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
746 q_button_state(e->button()));
752 if (e->button() == Qt::RightButton)
753 context_target_pos_ = e->pos();
755 inputContext()->reset();
757 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
758 q_button_state(e->button()));
759 dispatch(cmd, q_key_state(e->modifiers()));
764 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
766 if (synthetic_mouse_event_.timeout.running())
767 synthetic_mouse_event_.timeout.stop();
769 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
770 q_button_state(e->button()));
776 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
778 // we kill the triple click if we move
779 doubleClickTimeout();
780 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
781 q_motion_state(e->buttons()));
785 // If we're above or below the work area...
786 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
787 && e->buttons() == mouse_button::button1) {
788 // Make sure only a synthetic event can cause a page scroll,
789 // so they come at a steady rate:
791 // _Force_ a scroll up:
792 cmd.set_y(e->y() - 21);
794 cmd.set_y(e->y() + 21);
795 // Store the event, to be handled when the timeout expires.
796 synthetic_mouse_event_.cmd = cmd;
798 if (synthetic_mouse_event_.timeout.running()) {
799 // Discard the event. Note that it _may_ be handled
800 // when the timeout expires if
801 // synthetic_mouse_event_.cmd has not been overwritten.
802 // Ie, when the timeout expires, we handle the
803 // most recent event but discard all others that
804 // occurred after the one used to start the timeout
805 // in the first place.
809 synthetic_mouse_event_.restart_timeout = true;
810 synthetic_mouse_event_.timeout.start();
811 // Fall through to handle this event...
813 } else if (synthetic_mouse_event_.timeout.running()) {
814 // Store the event, to be possibly handled when the timeout
816 // Once the timeout has expired, normal control is returned
817 // to mouseMoveEvent (restart_timeout = false).
818 // This results in a much smoother 'feel' when moving the
819 // mouse back into the work area.
820 synthetic_mouse_event_.cmd = cmd;
821 synthetic_mouse_event_.restart_timeout = false;
828 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
830 // Wheel rotation by one notch results in a delta() of 120 (see
831 // documentation of QWheelEvent)
832 double const delta = ev->delta() / 120.0;
834 switch (lyxrc.scroll_wheel_zoom) {
835 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
836 zoom = ev->modifiers() & Qt::ControlModifier;
837 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
839 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
840 zoom = ev->modifiers() & Qt::ShiftModifier;
841 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
843 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
844 zoom = ev->modifiers() & Qt::AltModifier;
845 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
847 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
851 docstring arg = convert<docstring>(int(5 * delta));
852 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
856 // Take into account the desktop wide settings.
857 int const lines = qApp->wheelScrollLines();
858 int const page_step = verticalScrollBar()->pageStep();
859 // Test if the wheel mouse is set to one screen at a time.
860 int scroll_value = lines > page_step
861 ? page_step : lines * verticalScrollBar()->singleStep();
863 // Take into account the rotation and the user preferences.
864 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
865 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
866 << " delta = " << delta << " scroll_value = " << scroll_value
867 << " page_step = " << page_step);
869 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
875 void GuiWorkArea::generateSyntheticMouseEvent()
877 int const e_y = synthetic_mouse_event_.cmd.y();
878 int const wh = buffer_view_->workHeight();
879 bool const up = e_y < 0;
880 bool const down = e_y > wh;
882 // Set things off to generate the _next_ 'pseudo' event.
884 if (synthetic_mouse_event_.restart_timeout) {
885 // This is some magic formulae to determine the speed
886 // of scrolling related to the position of the mouse.
889 int dist = up ? -e_y : e_y - wh;
890 time = max(min(200, 250000 / (dist * dist)), 1) ;
893 step = 80000 / (time * time);
897 synthetic_mouse_event_.timeout.setTimeout(time);
898 synthetic_mouse_event_.timeout.start();
901 // Can we scroll further ?
902 int const value = verticalScrollBar()->value();
903 if (value == verticalScrollBar()->maximum()
904 || value == verticalScrollBar()->minimum()) {
905 synthetic_mouse_event_.timeout.stop();
910 if (step <= 2 * wh) {
911 buffer_view_->scroll(up ? -step : step);
912 buffer_view_->updateMetrics();
914 buffer_view_->scrollDocView(value + up ? -step : step, false);
917 // In which paragraph do we have to set the cursor ?
918 Cursor & cur = buffer_view_->cursor();
919 TextMetrics const & tm = buffer_view_->textMetrics(cur.text());
921 pair<pit_type, const ParagraphMetrics *> p = up ? tm.first() : tm.last();
922 ParagraphMetrics const & pm = *p.second;
923 pit_type const pit = p.first;
925 if (pm.rows().empty())
928 // Find the row at which we set the cursor.
929 RowList::const_iterator rit = pm.rows().begin();
930 RowList::const_iterator rlast = pm.rows().end();
931 int yy = pm.position() - pm.ascent();
932 for (--rlast; rit != rlast; ++rit) {
933 int h = rit->height();
934 if ((up && yy + h > 0)
935 || (!up && yy + h > wh - defaultRowHeight()))
940 // Find the position of the cursor
942 int x = synthetic_mouse_event_.cmd.x();
943 pos_type const pos = rit->pos() + tm.getColumnNearX(pit, *rit, x, bound);
950 buffer_view_->buffer().changed(false);
955 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
957 // Do not process here some keys if dialog_mode_ is set
959 && (ev->modifiers() == Qt::NoModifier
960 || ev->modifiers() == Qt::ShiftModifier)
961 && (ev->key() == Qt::Key_Escape
962 || ev->key() == Qt::Key_Enter
963 || ev->key() == Qt::Key_Return)
969 // intercept some keys if completion popup is visible
970 if (completer_->popupVisible()) {
974 completer_->activate();
980 // do nothing if there are other events
981 // (the auto repeated events come too fast)
982 // it looks like this is only needed on X11
984 if (qApp->hasPendingEvents() && ev->isAutoRepeat()) {
985 LYXERR(Debug::KEY, "system is busy: keyPress event ignored");
991 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
992 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key());
995 setKeySymbol(&sym, ev);
997 processKeySym(sym, q_key_state(ev->modifiers()));
1005 void GuiWorkArea::doubleClickTimeout()
1007 dc_event_.active = false;
1011 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1013 dc_event_ = DoubleClick(ev);
1014 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1015 SLOT(doubleClickTimeout()));
1016 FuncRequest cmd(LFUN_MOUSE_DOUBLE,
1018 q_button_state(ev->button()));
1024 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1026 QAbstractScrollArea::resizeEvent(ev);
1027 need_resize_ = true;
1032 void GuiWorkArea::update(int x, int y, int w, int h)
1034 viewport()->repaint(x, y, w, h);
1038 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1040 QRect const rc = ev->rect();
1041 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1042 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1045 screen_ = QPixmap(viewport()->width(), viewport()->height());
1047 if (cursor_visible_) {
1053 QPainter pain(viewport());
1054 pain.drawPixmap(rc, screen_, rc);
1055 cursor_->draw(pain);
1060 void GuiWorkArea::updateScreen()
1062 GuiPainter pain(&screen_);
1063 buffer_view_->draw(pain);
1067 void GuiWorkArea::showCursor(int x, int y, int h,
1068 bool l_shape, bool rtl, bool completable)
1070 if (schedule_redraw_) {
1071 // This happens when a graphic conversion is finished. As we don't know
1072 // the size of the new graphics, it's better the update everything.
1073 // We can't use redraw() here because this would trigger a infinite
1074 // recursive loop with showCursor().
1075 buffer_view_->resize(viewport()->width(), viewport()->height());
1078 viewport()->update(QRect(0, 0, viewport()->width(), viewport()->height()));
1079 schedule_redraw_ = false;
1080 // Show the cursor immediately after the update.
1086 cursor_->update(x, y, h, l_shape, rtl, completable);
1088 viewport()->update(cursor_->rect());
1092 void GuiWorkArea::removeCursor()
1095 //if (!qApp->focusWidget())
1096 viewport()->update(cursor_->rect());
1100 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1102 QString const & commit_string = e->commitString();
1103 docstring const & preedit_string
1104 = qstring_to_ucs4(e->preeditString());
1106 if (!commit_string.isEmpty()) {
1108 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1109 << " commitString: " << e->commitString());
1113 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
1114 for (int i = 0; i != commit_string.size(); ++i) {
1115 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
1120 // Hide the cursor during the kana-kanji transformation.
1121 if (preedit_string.empty())
1122 startBlinkingCursor();
1124 stopBlinkingCursor();
1126 // last_width : for checking if last preedit string was/wasn't empty.
1127 static bool last_width = false;
1128 if (!last_width && preedit_string.empty()) {
1129 // if last_width is last length of preedit string.
1134 GuiPainter pain(&screen_);
1135 buffer_view_->updateMetrics();
1136 buffer_view_->draw(pain);
1137 FontInfo font = buffer_view_->cursor().getFont().fontInfo();
1138 FontMetrics const & fm = theFontMetrics(font);
1139 int height = fm.maxHeight();
1140 int cur_x = cursor_->rect().left();
1141 int cur_y = cursor_->rect().bottom();
1143 // redraw area of preedit string.
1144 update(0, cur_y - height, viewport()->width(),
1145 (height + 1) * preedit_lines_);
1147 if (preedit_string.empty()) {
1155 // att : stores an IM attribute.
1156 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
1158 // get attributes of input method cursor.
1159 // cursor_pos : cursor position in preedit string.
1160 size_t cursor_pos = 0;
1161 bool cursor_is_visible = false;
1162 for (int i = 0; i != att.size(); ++i) {
1163 if (att.at(i).type == QInputMethodEvent::Cursor) {
1164 cursor_pos = att.at(i).start;
1165 cursor_is_visible = att.at(i).length != 0;
1170 size_t preedit_length = preedit_string.length();
1172 // get position of selection in input method.
1173 // FIXME: isn't there a way to do this simplier?
1174 // rStart : cursor position in selected string in IM.
1176 // rLength : selected string length in IM.
1178 if (cursor_pos < preedit_length) {
1179 for (int i = 0; i != att.size(); ++i) {
1180 if (att.at(i).type == QInputMethodEvent::TextFormat) {
1181 if (att.at(i).start <= int(cursor_pos)
1182 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
1183 rStart = att.at(i).start;
1184 rLength = att.at(i).length;
1185 if (!cursor_is_visible)
1186 cursor_pos += rLength;
1193 rStart = cursor_pos;
1197 int const right_margin = buffer_view_->rightMargin();
1198 Painter::preedit_style ps;
1199 // Most often there would be only one line:
1201 for (size_t pos = 0; pos != preedit_length; ++pos) {
1202 char_type const typed_char = preedit_string[pos];
1203 // reset preedit string style
1204 ps = Painter::preedit_default;
1206 // if we reached the right extremity of the screen, go to next line.
1207 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
1208 cur_x = right_margin;
1209 cur_y += height + 1;
1212 // preedit strings are displayed with dashed underline
1213 // and partial strings are displayed white on black indicating
1214 // that we are in selecting mode in the input method.
1215 // FIXME: rLength == preedit_length is not a changing condition
1216 // FIXME: should be put out of the loop.
1218 && pos < rStart + rLength
1219 && !(cursor_pos < rLength && rLength == preedit_length))
1220 ps = Painter::preedit_selecting;
1222 if (pos == cursor_pos
1223 && (cursor_pos < rLength && rLength == preedit_length))
1224 ps = Painter::preedit_cursor;
1226 // draw one character and update cur_x.
1227 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1230 // update the preedit string screen area.
1231 update(0, cur_y - preedit_lines_*height, viewport()->width(),
1232 (height + 1) * preedit_lines_);
1234 // Don't forget to accept the event!
1239 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1241 QRect cur_r(0, 0, 0, 0);
1243 // this is the CJK-specific composition window position and
1244 // the context menu position when the menu key is pressed.
1245 case Qt::ImMicroFocus:
1246 cur_r = cursor_->rect();
1247 if (preedit_lines_ != 1)
1249 cur_r.moveBottom(cur_r.bottom()
1250 + cur_r.height() * (preedit_lines_ - 1));
1251 // return lower right of cursor in LyX.
1254 return QWidget::inputMethodQuery(query);
1259 void GuiWorkArea::updateWindowTitle()
1261 docstring maximize_title;
1262 docstring minimize_title;
1264 Buffer & buf = buffer_view_->buffer();
1265 FileName const fileName = buf.fileName();
1266 if (!fileName.empty()) {
1267 maximize_title = fileName.displayName(30);
1268 minimize_title = from_utf8(fileName.onlyFileName());
1269 if (buf.lyxvc().inUse()) {
1270 if (buf.lyxvc().locking())
1271 maximize_title += _(" (version control, locking)");
1273 maximize_title += _(" (version control)");
1275 if (!buf.isClean()) {
1276 maximize_title += _(" (changed)");
1277 minimize_title += char_type('*');
1279 if (buf.isReadonly())
1280 maximize_title += _(" (read only)");
1283 QString title = windowTitle();
1284 QString new_title = toqstr(maximize_title);
1285 if (title == new_title)
1288 QWidget::setWindowTitle(new_title);
1289 QWidget::setWindowIconText(toqstr(minimize_title));
1294 void GuiWorkArea::setReadOnly(bool read_only)
1296 if (read_only_ == read_only)
1298 read_only_ = read_only;
1299 updateWindowTitle();
1300 if (this == lyx_view_->currentWorkArea())
1301 lyx_view_->updateDialogs();
1305 bool GuiWorkArea::isFullScreen()
1307 return lyx_view_ && lyx_view_->isFullScreen();
1311 ////////////////////////////////////////////////////////////////////
1315 ////////////////////////////////////////////////////////////////////
1318 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1320 buffer_ = theBufferList().newBuffer(
1321 support::FileName::tempName().absFileName() + "_embedded.internal");
1322 buffer_->setUnnamed(true);
1323 buffer_->setFullyLoaded(true);
1324 setBuffer(*buffer_);
1325 setDialogMode(true);
1329 EmbeddedWorkArea::~EmbeddedWorkArea()
1331 // No need to destroy buffer and bufferview here, because it is done
1332 // in theBufferList() destruction loop at application exit
1336 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1339 GuiWorkArea::closeEvent(ev);
1343 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1346 GuiWorkArea::hideEvent(ev);
1350 QSize EmbeddedWorkArea::sizeHint () const
1353 // GuiWorkArea sets the size to the screen's viewport
1354 // by returning a value this gets overridden
1355 // EmbeddedWorkArea is now sized to fit in the layout
1356 // of the parent, and has a minimum size set in GuiWorkArea
1357 // which is what we return here
1358 return QSize(100, 70);
1362 void EmbeddedWorkArea::disable()
1364 stopBlinkingCursor();
1365 if (view().currentWorkArea() != this)
1367 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1368 // tolerates it and shows the background logo), what happens if
1369 // an EmbeddedWorkArea is closed after closing all document WAs
1370 view().setCurrentWorkArea(view().currentMainWorkArea());
1373 ////////////////////////////////////////////////////////////////////
1377 ////////////////////////////////////////////////////////////////////
1380 class NoTabFrameMacStyle : public QMacStyle {
1383 QRect subElementRect(SubElement element, const QStyleOption * option,
1384 const QWidget * widget = 0) const
1386 QRect rect = QMacStyle::subElementRect(element, option, widget);
1387 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1389 // The Qt Mac style puts the contents into a 3 pixel wide box
1390 // which looks very ugly and not like other Mac applications.
1391 // Hence we remove this here, and moreover the 16 pixel round
1392 // frame above if the tab bar is hidden.
1393 if (element == QStyle::SE_TabWidgetTabContents) {
1394 rect.adjust(- rect.left(), 0, rect.left(), 0);
1403 NoTabFrameMacStyle noTabFrameMacStyle;
1407 TabWorkArea::TabWorkArea(QWidget * parent)
1408 : QTabWidget(parent), clicked_tab_(-1)
1411 setStyle(&noTabFrameMacStyle);
1413 #if QT_VERSION < 0x040500
1414 lyxrc.single_close_tab_button = true;
1417 QPalette pal = palette();
1418 pal.setColor(QPalette::Active, QPalette::Button,
1419 pal.color(QPalette::Active, QPalette::Window));
1420 pal.setColor(QPalette::Disabled, QPalette::Button,
1421 pal.color(QPalette::Disabled, QPalette::Window));
1422 pal.setColor(QPalette::Inactive, QPalette::Button,
1423 pal.color(QPalette::Inactive, QPalette::Window));
1425 QObject::connect(this, SIGNAL(currentChanged(int)),
1426 this, SLOT(on_currentTabChanged(int)));
1428 closeBufferButton = new QToolButton(this);
1429 closeBufferButton->setPalette(pal);
1430 // FIXME: rename the icon to closebuffer.png
1431 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "png")));
1432 closeBufferButton->setText("Close File");
1433 closeBufferButton->setAutoRaise(true);
1434 closeBufferButton->setCursor(Qt::ArrowCursor);
1435 closeBufferButton->setToolTip(qt_("Close File"));
1436 closeBufferButton->setEnabled(true);
1437 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1438 this, SLOT(closeCurrentBuffer()));
1439 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1441 // setup drag'n'drop
1442 QTabBar* tb = new DragTabBar;
1443 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1444 this, SLOT(moveTab(int, int)));
1445 tb->setElideMode(Qt::ElideNone);
1448 // make us responsible for the context menu of the tabbar
1449 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1450 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1451 this, SLOT(showContextMenu(const QPoint &)));
1452 #if QT_VERSION >= 0x040500
1453 connect(tb, SIGNAL(tabCloseRequested(int)),
1454 this, SLOT(closeTab(int)));
1457 setUsesScrollButtons(true);
1461 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1463 if (event->button() != Qt::LeftButton)
1466 // return early if double click on existing tabs
1467 for (int i = 0; i < count(); ++i)
1468 if (tabBar()->tabRect(i).contains(event->pos()))
1471 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1475 void TabWorkArea::setFullScreen(bool full_screen)
1477 for (int i = 0; i != count(); ++i) {
1478 if (GuiWorkArea * wa = workArea(i))
1479 wa->setFullScreen(full_screen);
1482 if (lyxrc.full_screen_tabbar)
1483 showBar(!full_screen && count() > 1);
1487 void TabWorkArea::showBar(bool show)
1489 tabBar()->setEnabled(show);
1490 tabBar()->setVisible(show);
1491 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1492 #if QT_VERSION >= 0x040500
1493 setTabsClosable(!lyxrc.single_close_tab_button);
1498 GuiWorkArea * TabWorkArea::currentWorkArea()
1503 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
1509 GuiWorkArea * TabWorkArea::workArea(int index)
1511 return dynamic_cast<GuiWorkArea *>(widget(index));
1515 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
1517 // FIXME: this method doesn't work if we have more than work area
1518 // showing the same buffer.
1519 for (int i = 0; i != count(); ++i) {
1520 GuiWorkArea * wa = workArea(i);
1521 LASSERT(wa, return 0);
1522 if (&wa->bufferView().buffer() == &buffer)
1529 void TabWorkArea::closeAll()
1532 GuiWorkArea * wa = workArea(0);
1540 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1542 LASSERT(work_area, /**/);
1543 int index = indexOf(work_area);
1547 if (index == currentIndex())
1548 // Make sure the work area is up to date.
1549 on_currentTabChanged(index);
1551 // Switch to the work area.
1552 setCurrentIndex(index);
1553 work_area->setFocus();
1559 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1561 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1562 wa->setUpdatesEnabled(false);
1563 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1564 // when hiding it again below).
1565 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1566 showBar(count() > 0);
1567 addTab(wa, wa->windowTitle());
1568 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1569 this, SLOT(updateTabTexts()));
1570 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1571 setFullScreen(true);
1573 // Hide tabbar if there's only one tab.
1574 showBar(count() > 1);
1582 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1584 LASSERT(work_area, return false);
1585 int index = indexOf(work_area);
1589 work_area->setUpdatesEnabled(false);
1594 // make sure the next work area is enabled.
1595 currentWidget()->setUpdatesEnabled(true);
1596 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1597 setFullScreen(true);
1599 // Show tabbar only if there's more than one tab.
1600 showBar(count() > 1);
1602 lastWorkAreaRemoved();
1610 void TabWorkArea::on_currentTabChanged(int i)
1612 // returns e.g. on application destruction
1615 GuiWorkArea * wa = workArea(i);
1616 LASSERT(wa, return);
1617 wa->setUpdatesEnabled(true);
1621 currentWorkAreaChanged(wa);
1623 LYXERR(Debug::GUI, "currentTabChanged " << i
1624 << " File: " << wa->bufferView().buffer().absFileName());
1628 void TabWorkArea::closeCurrentBuffer()
1631 if (clicked_tab_ == -1)
1632 wa = currentWorkArea();
1634 wa = workArea(clicked_tab_);
1637 wa->view().closeWorkArea(wa);
1641 void TabWorkArea::hideCurrentTab()
1644 if (clicked_tab_ == -1)
1645 wa = currentWorkArea();
1647 wa = workArea(clicked_tab_);
1650 wa->view().hideWorkArea(wa);
1654 void TabWorkArea::closeTab(int index)
1656 on_currentTabChanged(index);
1659 wa = currentWorkArea();
1661 wa = workArea(index);
1664 wa->view().closeWorkArea(wa);
1671 /// make vector happy
1674 DisplayPath(int tab, FileName const & filename)
1677 filename_ = (filename.extension() == "lyx") ?
1678 toqstr(filename.onlyFileNameWithoutExt())
1679 : toqstr(filename.onlyFileName());
1680 postfix_ = toqstr(filename.absoluteFilePath()).
1681 split("/", QString::SkipEmptyParts);
1682 postfix_.pop_back();
1683 abs_ = toqstr(filename.absoluteFilePath());
1684 dottedPrefix_ = false;
1687 /// Absolute path for debugging.
1692 /// Add the first segment from the postfix or three dots to the prefix.
1693 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1694 /// when really needed.
1695 void shiftPathSegment(bool dotted)
1697 if (postfix_.count() <= 0)
1701 if (dottedPrefix_ && !prefix_.isEmpty())
1703 prefix_ += postfix_.front() + "/";
1705 dottedPrefix_ = dotted && !prefix_.isEmpty();
1706 postfix_.pop_front();
1709 QString displayString() const
1711 if (prefix_.isEmpty())
1714 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1715 return prefix_ + (dots ? ".../" : "") + filename_;
1718 QString forecastPathString() const
1720 if (postfix_.count() == 0)
1721 return displayString();
1724 + (dottedPrefix_ ? ".../" : "")
1725 + postfix_.front() + "/";
1728 bool final() const { return postfix_.empty(); }
1730 int tab() const { return tab_; }
1736 QStringList postfix_;
1749 bool operator<(DisplayPath const & a, DisplayPath const & b)
1751 return a.displayString() < b.displayString();
1755 bool operator==(DisplayPath const & a, DisplayPath const & b)
1757 return a.displayString() == b.displayString();
1761 void TabWorkArea::updateTabTexts()
1766 std::list<DisplayPath> paths;
1767 typedef std::list<DisplayPath>::iterator It;
1769 // collect full names first: path into postfix, empty prefix and
1770 // filename without extension
1771 for (size_t i = 0; i < n; ++i) {
1772 GuiWorkArea * i_wa = workArea(i);
1773 FileName const fn = i_wa->bufferView().buffer().fileName();
1774 paths.push_back(DisplayPath(i, fn));
1777 // go through path segments and see if it helps to make the path more unique
1778 bool somethingChanged = true;
1779 bool allFinal = false;
1780 while (somethingChanged && !allFinal) {
1781 // adding path segments changes order
1784 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1785 somethingChanged = false;
1788 // find segments which are not unique (i.e. non-atomic)
1789 It it = paths.begin();
1791 QString segString = it->displayString();
1792 for (; it != paths.end(); ++it) {
1793 // look to the next item
1798 allFinal = allFinal && it->final();
1800 LYXERR(Debug::GUI, "it = " << it->abs()
1801 << " => " << it->displayString());
1803 // still the same segment?
1805 if ((next != paths.end()
1806 && (nextString = next->displayString()) == segString))
1808 LYXERR(Debug::GUI, "segment ended");
1810 // only a trivial one with one element?
1811 if (it == segStart) {
1812 // start new segment
1814 segString = nextString;
1818 // we found a non-atomic segment segStart <= sit <= it < next.
1819 // Shift path segments and hope for the best
1820 // that it makes the path more unique.
1821 somethingChanged = true;
1823 QString dspString = sit->forecastPathString();
1824 LYXERR(Debug::GUI, "first forecast found for "
1825 << sit->abs() << " => " << dspString);
1827 bool moreUnique = false;
1828 for (; sit != next; ++sit) {
1829 if (sit->forecastPathString() != dspString) {
1830 LYXERR(Debug::GUI, "different forecast found for "
1831 << sit->abs() << " => " << sit->forecastPathString());
1835 LYXERR(Debug::GUI, "same forecast found for "
1836 << sit->abs() << " => " << dspString);
1839 // if the path segment helped, add it. Otherwise add dots
1840 bool dots = !moreUnique;
1841 LYXERR(Debug::GUI, "using dots = " << dots);
1842 for (sit = segStart; sit != next; ++sit) {
1843 sit->shiftPathSegment(dots);
1844 LYXERR(Debug::GUI, "shifting "
1845 << sit->abs() << " => " << sit->displayString());
1848 // start new segment
1850 segString = nextString;
1854 // set new tab titles
1855 for (It it = paths.begin(); it != paths.end(); ++it) {
1856 GuiWorkArea * i_wa = workArea(it->tab());
1857 Buffer & buf = i_wa->bufferView().buffer();
1858 if (!buf.fileName().empty() && !buf.isClean())
1859 setTabText(it->tab(), it->displayString() + "*");
1861 setTabText(it->tab(), it->displayString());
1866 void TabWorkArea::showContextMenu(const QPoint & pos)
1869 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
1870 if (clicked_tab_ == -1)
1875 popup.addAction(QIcon(getPixmap("images/", "hidetab", "png")),
1876 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
1877 popup.addAction(QIcon(getPixmap("images/", "closetab", "png")),
1878 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
1879 popup.exec(tabBar()->mapToGlobal(pos));
1885 void TabWorkArea::moveTab(int fromIndex, int toIndex)
1887 QWidget * w = widget(fromIndex);
1888 QIcon icon = tabIcon(fromIndex);
1889 QString text = tabText(fromIndex);
1891 setCurrentIndex(fromIndex);
1892 removeTab(fromIndex);
1893 insertTab(toIndex, w, icon, text);
1894 setCurrentIndex(toIndex);
1898 DragTabBar::DragTabBar(QWidget* parent)
1901 setAcceptDrops(true);
1902 #if QT_VERSION >= 0x040500
1903 setTabsClosable(!lyxrc.single_close_tab_button);
1908 #if QT_VERSION < 0x040300
1909 int DragTabBar::tabAt(QPoint const & position) const
1911 const int max = count();
1912 for (int i = 0; i < max; ++i) {
1913 if (tabRect(i).contains(position))
1921 void DragTabBar::mousePressEvent(QMouseEvent * event)
1923 if (event->button() == Qt::LeftButton)
1924 dragStartPos_ = event->pos();
1925 QTabBar::mousePressEvent(event);
1929 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
1931 // If the left button isn't pressed anymore then return
1932 if (!(event->buttons() & Qt::LeftButton))
1935 // If the distance is too small then return
1936 if ((event->pos() - dragStartPos_).manhattanLength()
1937 < QApplication::startDragDistance())
1940 // did we hit something after all?
1941 int tab = tabAt(dragStartPos_);
1945 // simulate button release to remove highlight from button
1946 int i = currentIndex();
1947 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
1948 event->button(), event->buttons(), 0);
1949 QTabBar::mouseReleaseEvent(&me);
1953 QDrag * drag = new QDrag(this);
1954 QMimeData * mimeData = new QMimeData;
1955 // a crude way to distinguish tab-reodering drops from other ones
1956 mimeData->setData("action", "tab-reordering") ;
1957 drag->setMimeData(mimeData);
1959 #if QT_VERSION >= 0x040300
1960 // get tab pixmap as cursor
1961 QRect r = tabRect(tab);
1962 QPixmap pixmap(r.size());
1963 render(&pixmap, - r.topLeft());
1964 drag->setPixmap(pixmap);
1967 drag->start(Qt::MoveAction);
1973 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
1975 // Only accept if it's an tab-reordering request
1976 QMimeData const * m = event->mimeData();
1977 QStringList formats = m->formats();
1978 if (formats.contains("action")
1979 && m->data("action") == "tab-reordering")
1980 event->acceptProposedAction();
1984 void DragTabBar::dropEvent(QDropEvent * event)
1986 int fromIndex = tabAt(dragStartPos_);
1987 int toIndex = tabAt(event->pos());
1989 // Tell interested objects that
1990 if (fromIndex != toIndex)
1991 tabMoveRequested(fromIndex, toIndex);
1992 event->acceptProposedAction();
1996 } // namespace frontend
1999 #include "moc_GuiWorkArea.cpp"