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 vertical line
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();
329 void GuiWorkArea::setCursorShape(Qt::CursorShape shape)
331 viewport()->setCursor(shape);
335 void GuiWorkArea::updateCursorShape()
337 setCursorShape(buffer_view_->clickableInset()
338 ? Qt::PointingHandCursor : Qt::IBeamCursor);
342 void GuiWorkArea::setGuiView(GuiView & gv)
348 void GuiWorkArea::setBuffer(Buffer & buffer)
351 buffer_view_ = new BufferView(buffer);
352 buffer.workAreaManager().add(this);
354 // HACK: Prevents an additional redraw when the scrollbar pops up
355 // which regularily happens on documents with more than one page.
356 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
357 // Since we have no geometry information yet, we assume that
358 // a document needs a scrollbar if there is more then four
359 // paragraph in the outermost text.
360 if (buffer.text().paragraphs().size() > 4)
361 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
362 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
366 void GuiWorkArea::fixVerticalScrollBar()
369 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
373 void GuiWorkArea::close()
375 lyx_view_->removeWorkArea(this);
379 void GuiWorkArea::setFullScreen(bool full_screen)
381 buffer_view_->setFullScreen(full_screen);
382 setFrameStyle(QFrame::NoFrame);
384 setFrameStyle(QFrame::NoFrame);
385 if (lyxrc.full_screen_scrollbar)
386 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
388 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
392 BufferView & GuiWorkArea::bufferView()
394 return *buffer_view_;
398 BufferView const & GuiWorkArea::bufferView() const
400 return *buffer_view_;
404 void GuiWorkArea::stopBlinkingCursor()
406 cursor_timeout_.stop();
411 void GuiWorkArea::startBlinkingCursor()
413 // do not show the cursor if the view is busy
419 buffer_view_->cursorPosAndHeight(p, h);
420 // Don't start blinking if the cursor isn't on screen.
421 if (!buffer_view_->cursorInView(p, h))
426 //we're not supposed to cache this value.
427 int const time = QApplication::cursorFlashTime() / 2;
430 cursor_timeout_.setInterval(time);
431 cursor_timeout_.start();
435 void GuiWorkArea::redraw(bool update_metrics)
438 // No need to redraw in this case.
441 // No need to do anything if this is the current view. The BufferView
442 // metrics are already up to date.
443 if (update_metrics || lyx_view_ != guiApp->currentView()
444 || lyx_view_->currentWorkArea() != this) {
445 // FIXME: it would be nice to optimize for the off-screen case.
446 buffer_view_->cursor().fixIfBroken();
447 buffer_view_->updateMetrics();
448 buffer_view_->cursor().fixIfBroken();
451 // update cursor position, because otherwise it has to wait until
452 // the blinking interval is over
453 if (cursor_visible_) {
458 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
460 update(0, 0, viewport()->width(), viewport()->height());
462 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
463 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
465 lyx_view_->updateStatusBar();
467 if (lyxerr.debugging(Debug::WORKAREA))
468 buffer_view_->coordCache().dump();
470 setReadOnly(buffer_view_->buffer().isReadonly());
476 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
478 if (lyx_view_->isFullScreen() && lyx_view_->menuBar()->isVisible()
479 && lyxrc.full_screen_menubar) {
480 // FIXME HACK: we should not have to do this here. See related comment
481 // in GuiView::event() (QEvent::ShortcutOverride)
482 lyx_view_->menuBar()->hide();
485 // In order to avoid bad surprise in the middle of an operation,
486 // we better stop the blinking cursor...
487 // the cursor gets restarted in GuiView::restartCursor()
488 stopBlinkingCursor();
489 guiApp->processKeySym(key, mod);
493 void GuiWorkArea::dispatch(FuncRequest const & cmd0, KeyModifier mod)
496 if (cmd0.action() == LFUN_FILE_OPEN) {
498 lyx_view_->dispatch(cmd0, dr);
504 if (cmd0.action() == LFUN_MOUSE_PRESS) {
505 if (mod == ShiftModifier)
506 cmd = FuncRequest(cmd0, "region-select");
507 else if (mod == ControlModifier)
508 cmd = FuncRequest(cmd0, "paragraph-select");
515 bool const notJustMovingTheMouse =
516 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
518 // In order to avoid bad surprise in the middle of an operation, we better stop
519 // the blinking cursor.
520 if (notJustMovingTheMouse)
521 stopBlinkingCursor();
523 buffer_view_->mouseEventDispatch(cmd);
525 // Skip these when selecting
526 if (cmd.action() != LFUN_MOUSE_MOTION) {
527 completer_->updateVisibility(false, false);
528 lyx_view_->updateDialogs();
529 lyx_view_->updateStatusBar();
532 // GUI tweaks except with mouse motion with no button pressed.
533 if (notJustMovingTheMouse) {
534 // Slight hack: this is only called currently when we
535 // clicked somewhere, so we force through the display
536 // of the new status here.
537 lyx_view_->clearMessage();
539 // Show the cursor immediately after any operation
540 startBlinkingCursor();
547 void GuiWorkArea::resizeBufferView()
549 // WARNING: Please don't put any code that will trigger a repaint here!
550 // We are already inside a paint event.
551 lyx_view_->setBusy(true);
554 buffer_view_->cursorPosAndHeight(p, h);
555 bool const cursor_in_view = buffer_view_->cursorInView(p, h);
556 buffer_view_->resize(viewport()->width(), viewport()->height());
558 buffer_view_->scrollToCursor();
561 // Update scrollbars which might have changed due different
562 // BufferView dimension. This is especially important when the
563 // BufferView goes from zero-size to the real-size for the first time,
564 // as the scrollbar paramters are then set for the first time.
567 lyx_view_->updateLayoutList();
568 lyx_view_->setBusy(false);
569 need_resize_ = false;
573 void GuiWorkArea::showCursor()
580 buffer_view_->cursorPosAndHeight(p, h);
581 if (!buffer_view_->cursorInView(p, h))
585 bool l_shape = false;
586 Font const & realfont = buffer_view_->cursor().real_current_font;
587 BufferParams const & bp = buffer_view_->buffer().params();
588 bool const samelang = realfont.language() == bp.language;
589 bool const isrtl = realfont.isVisibleRightToLeft();
591 if (!samelang || isrtl != bp.language->rightToLeft())
594 // The ERT language hack needs fixing up
595 if (realfont.language() == latex_language)
598 // show cursor on screen
599 Cursor & cur = buffer_view_->cursor();
600 bool completable = cur.inset().showCompletionCursor()
601 && completer_->completionAvailable()
602 && !completer_->popupVisible()
603 && !completer_->inlineVisible();
604 cursor_visible_ = true;
605 showCursor(p.x_, p.y_, h, l_shape, isrtl, completable);
609 void GuiWorkArea::hideCursor()
611 if (!cursor_visible_)
614 cursor_visible_ = false;
619 void GuiWorkArea::toggleCursor()
628 void GuiWorkArea::updateScrollbar()
630 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
631 // WARNING: don't touch at the scrollbar value like this:
632 // verticalScrollBar()->setValue(scroll_.position);
633 // because this would cause a recursive signal/slot calling with
634 // GuiWorkArea::scrollTo
635 verticalScrollBar()->setRange(scroll_.min, scroll_.max);
636 verticalScrollBar()->setPageStep(scroll_.page_step);
637 verticalScrollBar()->setSingleStep(scroll_.single_step);
638 verticalScrollBar()->setSliderPosition(scroll_.position);
642 void GuiWorkArea::scrollTo(int value)
644 stopBlinkingCursor();
645 buffer_view_->scrollDocView(value, true);
647 if (lyxrc.cursor_follows_scrollbar) {
648 buffer_view_->setCursorFromScrollbar();
649 lyx_view_->updateLayoutList();
651 // Show the cursor immediately after any operation.
652 startBlinkingCursor();
653 QApplication::syncX();
657 bool GuiWorkArea::event(QEvent * e)
660 case QEvent::ToolTip: {
661 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
662 if (lyxrc.use_tooltip) {
663 QPoint pos = helpEvent->pos();
664 if (pos.x() < viewport()->width()) {
665 QString s = toqstr(buffer_view_->toolTip(pos.x(), pos.y()));
666 QToolTip::showText(helpEvent->globalPos(), s);
669 QToolTip::hideText();
671 // Don't forget to accept the event!
676 case QEvent::ShortcutOverride: {
677 // We catch this event in order to catch the Tab or Shift+Tab key press
678 // which are otherwise reserved to focus switching between controls
680 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
681 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
682 || (ke->key() == Qt::Key_Backtab && (
683 ke->modifiers() == Qt::ShiftModifier
684 || ke->modifiers() == Qt::NoModifier))) {
688 return QAbstractScrollArea::event(e);
692 return QAbstractScrollArea::event(e);
698 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
701 if (e->reason() == QContextMenuEvent::Mouse)
702 // the position is set on mouse press
703 pos = context_target_pos_;
706 Cursor const & cur = buffer_view_->cursor();
707 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
708 // Do not access the context menu of math right in front of before
709 // the cursor. This does not work when the cursor is in text.
710 Inset * inset = cur.paragraph().getInset(cur.pos());
711 if (inset && inset->asInsetMath())
713 else if (cur.pos() > 0) {
714 Inset * inset = cur.paragraph().getInset(cur.pos() - 1);
719 docstring name = buffer_view_->contextMenu(pos.x(), pos.y());
721 QAbstractScrollArea::contextMenuEvent(e);
724 QMenu * menu = guiApp->menus().menu(toqstr(name), *lyx_view_);
726 QAbstractScrollArea::contextMenuEvent(e);
729 // Position the menu to the right.
730 // FIXME: menu position should be different for RTL text.
731 menu->exec(e->globalPos());
736 void GuiWorkArea::focusInEvent(QFocusEvent * e)
738 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
739 if (lyx_view_->currentWorkArea() != this)
740 lyx_view_->setCurrentWorkArea(this);
742 startBlinkingCursor();
743 QAbstractScrollArea::focusInEvent(e);
747 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
749 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
750 stopBlinkingCursor();
751 QAbstractScrollArea::focusOutEvent(e);
755 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
757 if (dc_event_.active && dc_event_ == *e) {
758 dc_event_.active = false;
759 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
760 q_button_state(e->button()));
766 if (e->button() == Qt::RightButton)
767 context_target_pos_ = e->pos();
769 inputContext()->reset();
771 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
772 q_button_state(e->button()));
773 dispatch(cmd, q_key_state(e->modifiers()));
778 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
780 if (synthetic_mouse_event_.timeout.running())
781 synthetic_mouse_event_.timeout.stop();
783 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
784 q_button_state(e->button()));
790 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
792 // we kill the triple click if we move
793 doubleClickTimeout();
794 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
795 q_motion_state(e->buttons()));
799 // If we're above or below the work area...
800 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
801 && e->buttons() == mouse_button::button1) {
802 // Make sure only a synthetic event can cause a page scroll,
803 // so they come at a steady rate:
805 // _Force_ a scroll up:
806 cmd.set_y(e->y() - 21);
808 cmd.set_y(e->y() + 21);
809 // Store the event, to be handled when the timeout expires.
810 synthetic_mouse_event_.cmd = cmd;
812 if (synthetic_mouse_event_.timeout.running()) {
813 // Discard the event. Note that it _may_ be handled
814 // when the timeout expires if
815 // synthetic_mouse_event_.cmd has not been overwritten.
816 // Ie, when the timeout expires, we handle the
817 // most recent event but discard all others that
818 // occurred after the one used to start the timeout
819 // in the first place.
823 synthetic_mouse_event_.restart_timeout = true;
824 synthetic_mouse_event_.timeout.start();
825 // Fall through to handle this event...
827 } else if (synthetic_mouse_event_.timeout.running()) {
828 // Store the event, to be possibly handled when the timeout
830 // Once the timeout has expired, normal control is returned
831 // to mouseMoveEvent (restart_timeout = false).
832 // This results in a much smoother 'feel' when moving the
833 // mouse back into the work area.
834 synthetic_mouse_event_.cmd = cmd;
835 synthetic_mouse_event_.restart_timeout = false;
842 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
844 // Wheel rotation by one notch results in a delta() of 120 (see
845 // documentation of QWheelEvent)
846 double const delta = ev->delta() / 120.0;
848 switch (lyxrc.scroll_wheel_zoom) {
849 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
850 zoom = ev->modifiers() & Qt::ControlModifier;
851 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
853 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
854 zoom = ev->modifiers() & Qt::ShiftModifier;
855 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
857 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
858 zoom = ev->modifiers() & Qt::AltModifier;
859 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
861 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
865 docstring arg = convert<docstring>(int(5 * delta));
866 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
870 // Take into account the desktop wide settings.
871 int const lines = qApp->wheelScrollLines();
872 int const page_step = verticalScrollBar()->pageStep();
873 // Test if the wheel mouse is set to one screen at a time.
874 int scroll_value = lines > page_step
875 ? page_step : lines * verticalScrollBar()->singleStep();
877 // Take into account the rotation and the user preferences.
878 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
879 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
880 << " delta = " << delta << " scroll_value = " << scroll_value
881 << " page_step = " << page_step);
883 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
889 void GuiWorkArea::generateSyntheticMouseEvent()
891 int const e_y = synthetic_mouse_event_.cmd.y();
892 int const wh = buffer_view_->workHeight();
893 bool const up = e_y < 0;
894 bool const down = e_y > wh;
896 // Set things off to generate the _next_ 'pseudo' event.
898 if (synthetic_mouse_event_.restart_timeout) {
899 // This is some magic formulae to determine the speed
900 // of scrolling related to the position of the mouse.
903 int dist = up ? -e_y : e_y - wh;
904 time = max(min(200, 250000 / (dist * dist)), 1) ;
907 step = 80000 / (time * time);
911 synthetic_mouse_event_.timeout.setTimeout(time);
912 synthetic_mouse_event_.timeout.start();
915 // Can we scroll further ?
916 int const value = verticalScrollBar()->value();
917 if (value == verticalScrollBar()->maximum()
918 || value == verticalScrollBar()->minimum()) {
919 synthetic_mouse_event_.timeout.stop();
924 if (step <= 2 * wh) {
925 buffer_view_->scroll(up ? -step : step);
926 buffer_view_->updateMetrics();
928 buffer_view_->scrollDocView(value + up ? -step : step, false);
931 // In which paragraph do we have to set the cursor ?
932 Cursor & cur = buffer_view_->cursor();
933 TextMetrics const & tm = buffer_view_->textMetrics(cur.text());
935 pair<pit_type, const ParagraphMetrics *> p = up ? tm.first() : tm.last();
936 ParagraphMetrics const & pm = *p.second;
937 pit_type const pit = p.first;
939 if (pm.rows().empty())
942 // Find the row at which we set the cursor.
943 RowList::const_iterator rit = pm.rows().begin();
944 RowList::const_iterator rlast = pm.rows().end();
945 int yy = pm.position() - pm.ascent();
946 for (--rlast; rit != rlast; ++rit) {
947 int h = rit->height();
948 if ((up && yy + h > 0)
949 || (!up && yy + h > wh - defaultRowHeight()))
954 // Find the position of the cursor
956 int x = synthetic_mouse_event_.cmd.x();
957 pos_type const pos = rit->pos() + tm.getColumnNearX(pit, *rit, x, bound);
964 buffer_view_->buffer().changed(false);
969 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
971 // Do not process here some keys if dialog_mode_ is set
973 && (ev->modifiers() == Qt::NoModifier
974 || ev->modifiers() == Qt::ShiftModifier)
975 && (ev->key() == Qt::Key_Escape
976 || ev->key() == Qt::Key_Enter
977 || ev->key() == Qt::Key_Return)
983 // intercept some keys if completion popup is visible
984 if (completer_->popupVisible()) {
988 completer_->activate();
994 // do nothing if there are other events
995 // (the auto repeated events come too fast)
996 // it looks like this is only needed on X11
998 if (qApp->hasPendingEvents() && ev->isAutoRepeat()) {
999 LYXERR(Debug::KEY, "system is busy: keyPress event ignored");
1005 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1006 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key());
1009 setKeySymbol(&sym, ev);
1011 processKeySym(sym, q_key_state(ev->modifiers()));
1019 void GuiWorkArea::doubleClickTimeout()
1021 dc_event_.active = false;
1025 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1027 dc_event_ = DoubleClick(ev);
1028 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1029 SLOT(doubleClickTimeout()));
1030 FuncRequest cmd(LFUN_MOUSE_DOUBLE,
1032 q_button_state(ev->button()));
1038 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1040 QAbstractScrollArea::resizeEvent(ev);
1041 need_resize_ = true;
1046 void GuiWorkArea::update(int x, int y, int w, int h)
1048 viewport()->repaint(x, y, w, h);
1052 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1054 QRect const rc = ev->rect();
1055 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1056 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1059 screen_ = QPixmap(viewport()->width(), viewport()->height());
1061 if (cursor_visible_) {
1067 QPainter pain(viewport());
1068 pain.drawPixmap(rc, screen_, rc);
1069 cursor_->draw(pain);
1074 void GuiWorkArea::updateScreen()
1076 GuiPainter pain(&screen_);
1077 buffer_view_->draw(pain);
1081 void GuiWorkArea::showCursor(int x, int y, int h,
1082 bool l_shape, bool rtl, bool completable)
1084 if (schedule_redraw_) {
1085 // This happens when a graphic conversion is finished. As we don't know
1086 // the size of the new graphics, it's better the update everything.
1087 // We can't use redraw() here because this would trigger a infinite
1088 // recursive loop with showCursor().
1089 buffer_view_->resize(viewport()->width(), viewport()->height());
1092 viewport()->update(QRect(0, 0, viewport()->width(), viewport()->height()));
1093 schedule_redraw_ = false;
1094 // Show the cursor immediately after the update.
1100 cursor_->update(x, y, h, l_shape, rtl, completable);
1102 viewport()->update(cursor_->rect());
1106 void GuiWorkArea::removeCursor()
1109 //if (!qApp->focusWidget())
1110 viewport()->update(cursor_->rect());
1114 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1116 QString const & commit_string = e->commitString();
1117 docstring const & preedit_string
1118 = qstring_to_ucs4(e->preeditString());
1120 if (!commit_string.isEmpty()) {
1122 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1123 << " commitString: " << e->commitString());
1127 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
1128 for (int i = 0; i != commit_string.size(); ++i) {
1129 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
1134 // Hide the cursor during the kana-kanji transformation.
1135 if (preedit_string.empty())
1136 startBlinkingCursor();
1138 stopBlinkingCursor();
1140 // last_width : for checking if last preedit string was/wasn't empty.
1141 static bool last_width = false;
1142 if (!last_width && preedit_string.empty()) {
1143 // if last_width is last length of preedit string.
1148 GuiPainter pain(&screen_);
1149 buffer_view_->updateMetrics();
1150 buffer_view_->draw(pain);
1151 FontInfo font = buffer_view_->cursor().getFont().fontInfo();
1152 FontMetrics const & fm = theFontMetrics(font);
1153 int height = fm.maxHeight();
1154 int cur_x = cursor_->rect().left();
1155 int cur_y = cursor_->rect().bottom();
1157 // redraw area of preedit string.
1158 update(0, cur_y - height, viewport()->width(),
1159 (height + 1) * preedit_lines_);
1161 if (preedit_string.empty()) {
1169 // att : stores an IM attribute.
1170 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
1172 // get attributes of input method cursor.
1173 // cursor_pos : cursor position in preedit string.
1174 size_t cursor_pos = 0;
1175 bool cursor_is_visible = false;
1176 for (int i = 0; i != att.size(); ++i) {
1177 if (att.at(i).type == QInputMethodEvent::Cursor) {
1178 cursor_pos = att.at(i).start;
1179 cursor_is_visible = att.at(i).length != 0;
1184 size_t preedit_length = preedit_string.length();
1186 // get position of selection in input method.
1187 // FIXME: isn't there a way to do this simplier?
1188 // rStart : cursor position in selected string in IM.
1190 // rLength : selected string length in IM.
1192 if (cursor_pos < preedit_length) {
1193 for (int i = 0; i != att.size(); ++i) {
1194 if (att.at(i).type == QInputMethodEvent::TextFormat) {
1195 if (att.at(i).start <= int(cursor_pos)
1196 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
1197 rStart = att.at(i).start;
1198 rLength = att.at(i).length;
1199 if (!cursor_is_visible)
1200 cursor_pos += rLength;
1207 rStart = cursor_pos;
1211 int const right_margin = buffer_view_->rightMargin();
1212 Painter::preedit_style ps;
1213 // Most often there would be only one line:
1215 for (size_t pos = 0; pos != preedit_length; ++pos) {
1216 char_type const typed_char = preedit_string[pos];
1217 // reset preedit string style
1218 ps = Painter::preedit_default;
1220 // if we reached the right extremity of the screen, go to next line.
1221 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
1222 cur_x = right_margin;
1223 cur_y += height + 1;
1226 // preedit strings are displayed with dashed underline
1227 // and partial strings are displayed white on black indicating
1228 // that we are in selecting mode in the input method.
1229 // FIXME: rLength == preedit_length is not a changing condition
1230 // FIXME: should be put out of the loop.
1232 && pos < rStart + rLength
1233 && !(cursor_pos < rLength && rLength == preedit_length))
1234 ps = Painter::preedit_selecting;
1236 if (pos == cursor_pos
1237 && (cursor_pos < rLength && rLength == preedit_length))
1238 ps = Painter::preedit_cursor;
1240 // draw one character and update cur_x.
1241 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1244 // update the preedit string screen area.
1245 update(0, cur_y - preedit_lines_*height, viewport()->width(),
1246 (height + 1) * preedit_lines_);
1248 // Don't forget to accept the event!
1253 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1255 QRect cur_r(0, 0, 0, 0);
1257 // this is the CJK-specific composition window position and
1258 // the context menu position when the menu key is pressed.
1259 case Qt::ImMicroFocus:
1260 cur_r = cursor_->rect();
1261 if (preedit_lines_ != 1)
1263 cur_r.moveBottom(cur_r.bottom()
1264 + cur_r.height() * (preedit_lines_ - 1));
1265 // return lower right of cursor in LyX.
1268 return QWidget::inputMethodQuery(query);
1273 void GuiWorkArea::updateWindowTitle()
1275 docstring maximize_title;
1276 docstring minimize_title;
1278 Buffer & buf = buffer_view_->buffer();
1279 FileName const fileName = buf.fileName();
1280 if (!fileName.empty()) {
1281 maximize_title = fileName.displayName(30);
1282 minimize_title = from_utf8(fileName.onlyFileName());
1283 if (buf.lyxvc().inUse()) {
1284 if (buf.lyxvc().locking())
1285 maximize_title += _(" (version control, locking)");
1287 maximize_title += _(" (version control)");
1289 if (!buf.isClean()) {
1290 maximize_title += _(" (changed)");
1291 minimize_title += char_type('*');
1293 if (buf.isReadonly())
1294 maximize_title += _(" (read only)");
1297 QString title = windowTitle();
1298 QString new_title = toqstr(maximize_title);
1299 if (title == new_title)
1302 QWidget::setWindowTitle(new_title);
1303 QWidget::setWindowIconText(toqstr(minimize_title));
1308 void GuiWorkArea::setReadOnly(bool read_only)
1310 if (read_only_ == read_only)
1312 read_only_ = read_only;
1313 updateWindowTitle();
1314 if (this == lyx_view_->currentWorkArea())
1315 lyx_view_->updateDialogs();
1319 bool GuiWorkArea::isFullScreen()
1321 return lyx_view_ && lyx_view_->isFullScreen();
1325 ////////////////////////////////////////////////////////////////////
1329 ////////////////////////////////////////////////////////////////////
1332 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1334 buffer_ = theBufferList().newBuffer(
1335 support::FileName::tempName().absFileName() + "_embedded.internal");
1336 buffer_->setUnnamed(true);
1337 buffer_->setFullyLoaded(true);
1338 setBuffer(*buffer_);
1339 setDialogMode(true);
1343 EmbeddedWorkArea::~EmbeddedWorkArea()
1345 // No need to destroy buffer and bufferview here, because it is done
1346 // in theBufferList() destruction loop at application exit
1350 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1353 GuiWorkArea::closeEvent(ev);
1357 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1360 GuiWorkArea::hideEvent(ev);
1364 QSize EmbeddedWorkArea::sizeHint () const
1367 // GuiWorkArea sets the size to the screen's viewport
1368 // by returning a value this gets overridden
1369 // EmbeddedWorkArea is now sized to fit in the layout
1370 // of the parent, and has a minimum size set in GuiWorkArea
1371 // which is what we return here
1372 return QSize(100, 70);
1376 void EmbeddedWorkArea::disable()
1378 stopBlinkingCursor();
1379 if (view().currentWorkArea() != this)
1381 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1382 // tolerates it and shows the background logo), what happens if
1383 // an EmbeddedWorkArea is closed after closing all document WAs
1384 view().setCurrentWorkArea(view().currentMainWorkArea());
1387 ////////////////////////////////////////////////////////////////////
1391 ////////////////////////////////////////////////////////////////////
1394 class NoTabFrameMacStyle : public QMacStyle {
1397 QRect subElementRect(SubElement element, const QStyleOption * option,
1398 const QWidget * widget = 0) const
1400 QRect rect = QMacStyle::subElementRect(element, option, widget);
1401 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1403 // The Qt Mac style puts the contents into a 3 pixel wide box
1404 // which looks very ugly and not like other Mac applications.
1405 // Hence we remove this here, and moreover the 16 pixel round
1406 // frame above if the tab bar is hidden.
1407 if (element == QStyle::SE_TabWidgetTabContents) {
1408 rect.adjust(- rect.left(), 0, rect.left(), 0);
1417 NoTabFrameMacStyle noTabFrameMacStyle;
1421 TabWorkArea::TabWorkArea(QWidget * parent)
1422 : QTabWidget(parent), clicked_tab_(-1)
1425 setStyle(&noTabFrameMacStyle);
1427 #if QT_VERSION < 0x040500
1428 lyxrc.single_close_tab_button = true;
1431 QPalette pal = palette();
1432 pal.setColor(QPalette::Active, QPalette::Button,
1433 pal.color(QPalette::Active, QPalette::Window));
1434 pal.setColor(QPalette::Disabled, QPalette::Button,
1435 pal.color(QPalette::Disabled, QPalette::Window));
1436 pal.setColor(QPalette::Inactive, QPalette::Button,
1437 pal.color(QPalette::Inactive, QPalette::Window));
1439 QObject::connect(this, SIGNAL(currentChanged(int)),
1440 this, SLOT(on_currentTabChanged(int)));
1442 closeBufferButton = new QToolButton(this);
1443 closeBufferButton->setPalette(pal);
1444 // FIXME: rename the icon to closebuffer.png
1445 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "png")));
1446 closeBufferButton->setText("Close File");
1447 closeBufferButton->setAutoRaise(true);
1448 closeBufferButton->setCursor(Qt::ArrowCursor);
1449 closeBufferButton->setToolTip(qt_("Close File"));
1450 closeBufferButton->setEnabled(true);
1451 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1452 this, SLOT(closeCurrentBuffer()));
1453 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1455 // setup drag'n'drop
1456 QTabBar* tb = new DragTabBar;
1457 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1458 this, SLOT(moveTab(int, int)));
1459 tb->setElideMode(Qt::ElideNone);
1462 // make us responsible for the context menu of the tabbar
1463 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1464 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1465 this, SLOT(showContextMenu(const QPoint &)));
1466 #if QT_VERSION >= 0x040500
1467 connect(tb, SIGNAL(tabCloseRequested(int)),
1468 this, SLOT(closeTab(int)));
1471 setUsesScrollButtons(true);
1475 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1477 if (event->button() != Qt::LeftButton)
1480 // return early if double click on existing tabs
1481 for (int i = 0; i < count(); ++i)
1482 if (tabBar()->tabRect(i).contains(event->pos()))
1485 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1489 void TabWorkArea::setFullScreen(bool full_screen)
1491 for (int i = 0; i != count(); ++i) {
1492 if (GuiWorkArea * wa = workArea(i))
1493 wa->setFullScreen(full_screen);
1496 if (lyxrc.full_screen_tabbar)
1497 showBar(!full_screen && count() > 1);
1501 void TabWorkArea::showBar(bool show)
1503 tabBar()->setEnabled(show);
1504 tabBar()->setVisible(show);
1505 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1506 #if QT_VERSION >= 0x040500
1507 setTabsClosable(!lyxrc.single_close_tab_button);
1512 GuiWorkArea * TabWorkArea::currentWorkArea()
1517 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
1523 GuiWorkArea * TabWorkArea::workArea(int index)
1525 return dynamic_cast<GuiWorkArea *>(widget(index));
1529 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
1531 // FIXME: this method doesn't work if we have more than work area
1532 // showing the same buffer.
1533 for (int i = 0; i != count(); ++i) {
1534 GuiWorkArea * wa = workArea(i);
1535 LASSERT(wa, return 0);
1536 if (&wa->bufferView().buffer() == &buffer)
1543 void TabWorkArea::closeAll()
1546 GuiWorkArea * wa = workArea(0);
1554 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1556 LASSERT(work_area, /**/);
1557 int index = indexOf(work_area);
1561 if (index == currentIndex())
1562 // Make sure the work area is up to date.
1563 on_currentTabChanged(index);
1565 // Switch to the work area.
1566 setCurrentIndex(index);
1567 work_area->setFocus();
1573 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1575 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1576 wa->setUpdatesEnabled(false);
1577 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1578 // when hiding it again below).
1579 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1580 showBar(count() > 0);
1581 addTab(wa, wa->windowTitle());
1582 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1583 this, SLOT(updateTabTexts()));
1584 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1585 setFullScreen(true);
1587 // Hide tabbar if there's only one tab.
1588 showBar(count() > 1);
1596 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1598 LASSERT(work_area, return false);
1599 int index = indexOf(work_area);
1603 work_area->setUpdatesEnabled(false);
1608 // make sure the next work area is enabled.
1609 currentWidget()->setUpdatesEnabled(true);
1610 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1611 setFullScreen(true);
1613 // Show tabbar only if there's more than one tab.
1614 showBar(count() > 1);
1616 lastWorkAreaRemoved();
1624 void TabWorkArea::on_currentTabChanged(int i)
1626 // returns e.g. on application destruction
1629 GuiWorkArea * wa = workArea(i);
1630 LASSERT(wa, return);
1631 wa->setUpdatesEnabled(true);
1635 currentWorkAreaChanged(wa);
1637 LYXERR(Debug::GUI, "currentTabChanged " << i
1638 << " File: " << wa->bufferView().buffer().absFileName());
1642 void TabWorkArea::closeCurrentBuffer()
1645 if (clicked_tab_ == -1)
1646 wa = currentWorkArea();
1648 wa = workArea(clicked_tab_);
1651 wa->view().closeWorkArea(wa);
1655 void TabWorkArea::hideCurrentTab()
1658 if (clicked_tab_ == -1)
1659 wa = currentWorkArea();
1661 wa = workArea(clicked_tab_);
1664 wa->view().hideWorkArea(wa);
1668 void TabWorkArea::closeTab(int index)
1670 on_currentTabChanged(index);
1673 wa = currentWorkArea();
1675 wa = workArea(index);
1678 wa->view().closeWorkArea(wa);
1685 /// make vector happy
1688 DisplayPath(int tab, FileName const & filename)
1691 filename_ = (filename.extension() == "lyx") ?
1692 toqstr(filename.onlyFileNameWithoutExt())
1693 : toqstr(filename.onlyFileName());
1694 postfix_ = toqstr(filename.absoluteFilePath()).
1695 split("/", QString::SkipEmptyParts);
1696 postfix_.pop_back();
1697 abs_ = toqstr(filename.absoluteFilePath());
1698 dottedPrefix_ = false;
1701 /// Absolute path for debugging.
1706 /// Add the first segment from the postfix or three dots to the prefix.
1707 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1708 /// when really needed.
1709 void shiftPathSegment(bool dotted)
1711 if (postfix_.count() <= 0)
1715 if (dottedPrefix_ && !prefix_.isEmpty())
1717 prefix_ += postfix_.front() + "/";
1719 dottedPrefix_ = dotted && !prefix_.isEmpty();
1720 postfix_.pop_front();
1723 QString displayString() const
1725 if (prefix_.isEmpty())
1728 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1729 return prefix_ + (dots ? ".../" : "") + filename_;
1732 QString forecastPathString() const
1734 if (postfix_.count() == 0)
1735 return displayString();
1738 + (dottedPrefix_ ? ".../" : "")
1739 + postfix_.front() + "/";
1742 bool final() const { return postfix_.empty(); }
1744 int tab() const { return tab_; }
1750 QStringList postfix_;
1763 bool operator<(DisplayPath const & a, DisplayPath const & b)
1765 return a.displayString() < b.displayString();
1769 bool operator==(DisplayPath const & a, DisplayPath const & b)
1771 return a.displayString() == b.displayString();
1775 void TabWorkArea::updateTabTexts()
1780 std::list<DisplayPath> paths;
1781 typedef std::list<DisplayPath>::iterator It;
1783 // collect full names first: path into postfix, empty prefix and
1784 // filename without extension
1785 for (size_t i = 0; i < n; ++i) {
1786 GuiWorkArea * i_wa = workArea(i);
1787 FileName const fn = i_wa->bufferView().buffer().fileName();
1788 paths.push_back(DisplayPath(i, fn));
1791 // go through path segments and see if it helps to make the path more unique
1792 bool somethingChanged = true;
1793 bool allFinal = false;
1794 while (somethingChanged && !allFinal) {
1795 // adding path segments changes order
1798 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1799 somethingChanged = false;
1802 // find segments which are not unique (i.e. non-atomic)
1803 It it = paths.begin();
1805 QString segString = it->displayString();
1806 for (; it != paths.end(); ++it) {
1807 // look to the next item
1812 allFinal = allFinal && it->final();
1814 LYXERR(Debug::GUI, "it = " << it->abs()
1815 << " => " << it->displayString());
1817 // still the same segment?
1819 if ((next != paths.end()
1820 && (nextString = next->displayString()) == segString))
1822 LYXERR(Debug::GUI, "segment ended");
1824 // only a trivial one with one element?
1825 if (it == segStart) {
1826 // start new segment
1828 segString = nextString;
1832 // we found a non-atomic segment segStart <= sit <= it < next.
1833 // Shift path segments and hope for the best
1834 // that it makes the path more unique.
1835 somethingChanged = true;
1837 QString dspString = sit->forecastPathString();
1838 LYXERR(Debug::GUI, "first forecast found for "
1839 << sit->abs() << " => " << dspString);
1841 bool moreUnique = false;
1842 for (; sit != next; ++sit) {
1843 if (sit->forecastPathString() != dspString) {
1844 LYXERR(Debug::GUI, "different forecast found for "
1845 << sit->abs() << " => " << sit->forecastPathString());
1849 LYXERR(Debug::GUI, "same forecast found for "
1850 << sit->abs() << " => " << dspString);
1853 // if the path segment helped, add it. Otherwise add dots
1854 bool dots = !moreUnique;
1855 LYXERR(Debug::GUI, "using dots = " << dots);
1856 for (sit = segStart; sit != next; ++sit) {
1857 sit->shiftPathSegment(dots);
1858 LYXERR(Debug::GUI, "shifting "
1859 << sit->abs() << " => " << sit->displayString());
1862 // start new segment
1864 segString = nextString;
1868 // set new tab titles
1869 for (It it = paths.begin(); it != paths.end(); ++it) {
1870 GuiWorkArea * i_wa = workArea(it->tab());
1871 Buffer & buf = i_wa->bufferView().buffer();
1872 if (!buf.fileName().empty() && !buf.isClean())
1873 setTabText(it->tab(), it->displayString() + "*");
1875 setTabText(it->tab(), it->displayString());
1880 void TabWorkArea::showContextMenu(const QPoint & pos)
1883 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
1884 if (clicked_tab_ == -1)
1889 popup.addAction(QIcon(getPixmap("images/", "hidetab", "png")),
1890 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
1891 popup.addAction(QIcon(getPixmap("images/", "closetab", "png")),
1892 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
1893 popup.exec(tabBar()->mapToGlobal(pos));
1899 void TabWorkArea::moveTab(int fromIndex, int toIndex)
1901 QWidget * w = widget(fromIndex);
1902 QIcon icon = tabIcon(fromIndex);
1903 QString text = tabText(fromIndex);
1905 setCurrentIndex(fromIndex);
1906 removeTab(fromIndex);
1907 insertTab(toIndex, w, icon, text);
1908 setCurrentIndex(toIndex);
1912 DragTabBar::DragTabBar(QWidget* parent)
1915 setAcceptDrops(true);
1916 #if QT_VERSION >= 0x040500
1917 setTabsClosable(!lyxrc.single_close_tab_button);
1922 #if QT_VERSION < 0x040300
1923 int DragTabBar::tabAt(QPoint const & position) const
1925 const int max = count();
1926 for (int i = 0; i < max; ++i) {
1927 if (tabRect(i).contains(position))
1935 void DragTabBar::mousePressEvent(QMouseEvent * event)
1937 if (event->button() == Qt::LeftButton)
1938 dragStartPos_ = event->pos();
1939 QTabBar::mousePressEvent(event);
1943 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
1945 // If the left button isn't pressed anymore then return
1946 if (!(event->buttons() & Qt::LeftButton))
1949 // If the distance is too small then return
1950 if ((event->pos() - dragStartPos_).manhattanLength()
1951 < QApplication::startDragDistance())
1954 // did we hit something after all?
1955 int tab = tabAt(dragStartPos_);
1959 // simulate button release to remove highlight from button
1960 int i = currentIndex();
1961 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
1962 event->button(), event->buttons(), 0);
1963 QTabBar::mouseReleaseEvent(&me);
1967 QDrag * drag = new QDrag(this);
1968 QMimeData * mimeData = new QMimeData;
1969 // a crude way to distinguish tab-reodering drops from other ones
1970 mimeData->setData("action", "tab-reordering") ;
1971 drag->setMimeData(mimeData);
1973 #if QT_VERSION >= 0x040300
1974 // get tab pixmap as cursor
1975 QRect r = tabRect(tab);
1976 QPixmap pixmap(r.size());
1977 render(&pixmap, - r.topLeft());
1978 drag->setPixmap(pixmap);
1981 drag->start(Qt::MoveAction);
1987 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
1989 // Only accept if it's an tab-reordering request
1990 QMimeData const * m = event->mimeData();
1991 QStringList formats = m->formats();
1992 if (formats.contains("action")
1993 && m->data("action") == "tab-reordering")
1994 event->acceptProposedAction();
1998 void DragTabBar::dropEvent(QDropEvent * event)
2000 int fromIndex = tabAt(dragStartPos_);
2001 int toIndex = tabAt(event->pos());
2003 // Tell interested objects that
2004 if (fromIndex != toIndex)
2005 tabMoveRequested(fromIndex, toIndex);
2006 event->acceptProposedAction();
2010 } // namespace frontend
2013 #include "moc_GuiWorkArea.cpp"