2 * \file GuiWorkArea.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
7 * \author Abdelrazak Younes
9 * Full author contact details are available in file CREDITS.
14 #include "GuiWorkArea.h"
15 #include "GuiWorkArea_Private.h"
17 #include "ColorCache.h"
18 #include "FontLoader.h"
22 #include "BufferList.h"
23 #include "BufferParams.h"
24 #include "BufferView.h"
25 #include "CoordCache.h"
28 #include "FuncRequest.h"
29 #include "GuiApplication.h"
30 #include "GuiCompleter.h"
31 #include "GuiKeySymbol.h"
32 #include "GuiPainter.h"
34 #include "KeySymbol.h"
39 #include "qt_helpers.h"
41 #include "TextMetrics.h"
44 #include "graphics/GraphicsImage.h"
45 #include "graphics/GraphicsLoader.h"
47 #include "support/convert.h"
48 #include "support/debug.h"
49 #include "support/gettext.h"
50 #include "support/FileName.h"
51 #include "support/lassert.h"
52 #include "support/TempFile.h"
54 #include "frontends/Application.h"
55 #include "frontends/FontMetrics.h"
56 #include "frontends/WorkAreaManager.h"
58 #include <QContextMenuEvent>
59 #if (QT_VERSION < 0x050000)
60 #include <QInputContext>
65 #include <QProxyStyle>
67 #include <QMainWindow>
72 #include <QPixmapCache>
74 #include <QStyleOption>
75 #include <QStylePainter>
77 #include <QToolButton>
81 #include "support/bind.h"
85 int const TabIndicatorWidth = 3;
91 using namespace lyx::support;
96 /// return the LyX mouse button state from Qt's
97 static mouse_button::state q_button_state(Qt::MouseButton button)
99 mouse_button::state b = mouse_button::none;
102 b = mouse_button::button1;
105 b = mouse_button::button2;
107 case Qt::RightButton:
108 b = mouse_button::button3;
117 /// return the LyX mouse button state from Qt's
118 mouse_button::state q_motion_state(Qt::MouseButtons state)
120 mouse_button::state b = mouse_button::none;
121 if (state & Qt::LeftButton)
122 b |= mouse_button::button1;
123 if (state & Qt::MidButton)
124 b |= mouse_button::button2;
125 if (state & Qt::RightButton)
126 b |= mouse_button::button3;
139 void draw(QPainter & painter)
141 if (!show_ || !rect_.isValid())
145 int l = x_ - rect_.left();
146 int r = rect_.right() - x_;
147 int bot = rect_.bottom();
149 // draw vertical line
150 painter.fillRect(x_, y, cursor_width_, rect_.height(), color_);
152 // draw RTL/LTR indication
153 painter.setPen(color_);
156 painter.drawLine(x_, bot, x_ - l, bot);
158 painter.drawLine(x_, bot, x_ + cursor_width_ + r, bot);
161 // draw completion triangle
163 int m = y + rect_.height() / 2;
164 int d = TabIndicatorWidth - 1;
166 painter.drawLine(x_ - 1, m - d, x_ - 1 - d, m);
167 painter.drawLine(x_ - 1, m + d, x_ - 1 - d, m);
169 painter.drawLine(x_ + cursor_width_, m - d, x_ + cursor_width_ + d, m);
170 painter.drawLine(x_ + cursor_width_, m + d, x_ + cursor_width_ + d, m);
175 void update(int x, int y, int h, bool l_shape,
176 bool rtl, bool completable)
178 color_ = guiApp->colorCache().get(Color_cursor);
181 completable_ = completable;
184 // extension to left and right
188 // RTL/LTR indication
196 // completion triangle
199 l = max(l, TabIndicatorWidth);
201 r = max(r, TabIndicatorWidth);
204 // compute overall rectangle
205 rect_ = QRect(x - l, y, cursor_width_ + r + l, h);
208 void show(bool set_show = true) { show_ = set_show; }
209 void hide() { show_ = false; }
210 int cursorWidth() const { return cursor_width_; }
211 void recomputeWidth() {
212 cursor_width_ = lyxrc.cursor_width
214 : 1 + int((lyxrc.zoom + 50) / 200.0);
217 QRect const & rect() { return rect_; }
220 /// cursor is in RTL or LTR text
222 /// indication for RTL or LTR
224 /// triangle to show that a completion is available
230 /// rectangle, possibly with l_shape and completion triangle
232 /// x position (were the vertical line is drawn)
239 // This is a 'heartbeat' generating synthetic mouse move events when the
240 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
241 SyntheticMouseEvent::SyntheticMouseEvent()
242 : timeout(200), restart_timeout(true)
246 GuiWorkArea::Private::Private(GuiWorkArea * parent)
247 : p(parent), screen_(0), buffer_view_(0), lyx_view_(0), cursor_visible_(false),
248 need_resize_(false), schedule_redraw_(false), preedit_lines_(1),
250 completer_(new GuiCompleter(p, p))
255 GuiWorkArea::GuiWorkArea(QWidget * /* w */)
256 : d(new Private(this))
261 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
262 : d(new Private(this))
265 buffer.params().display_pixel_ratio = theGuiApp()->pixelRatio();
271 double GuiWorkArea::pixelRatio() const
273 #if QT_VERSION >= 0x050000
274 return devicePixelRatio();
281 void GuiWorkArea::init()
284 connect(&d->cursor_timeout_, SIGNAL(timeout()),
285 this, SLOT(toggleCursor()));
287 int const time = QApplication::cursorFlashTime() / 2;
289 d->cursor_timeout_.setInterval(time);
290 d->cursor_timeout_.start();
292 // let's initialize this just to be safe
293 d->cursor_timeout_.setInterval(500);
297 // With Qt4.5 a mouse event will happen before the first paint event
298 // so make sure that the buffer view has an up to date metrics.
299 d->buffer_view_->resize(viewport()->width(), viewport()->height());
300 d->cursor_ = new frontend::CursorWidget();
303 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
304 setAcceptDrops(true);
305 setMouseTracking(true);
306 setMinimumSize(100, 70);
307 setFrameStyle(QFrame::NoFrame);
310 viewport()->setAutoFillBackground(false);
311 // We don't need double-buffering nor SystemBackground on
312 // the viewport because we have our own backing pixmap.
313 viewport()->setAttribute(Qt::WA_NoSystemBackground);
315 setFocusPolicy(Qt::StrongFocus);
317 d->setCursorShape(Qt::IBeamCursor);
319 d->synthetic_mouse_event_.timeout.timeout.connect(
320 bind(&GuiWorkArea::generateSyntheticMouseEvent,
323 // Initialize the vertical Scroll Bar
324 QObject::connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
325 this, SLOT(scrollTo(int)));
327 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
328 << " viewport height: " << viewport()->height());
330 // Enables input methods for asian languages.
331 // Must be set when creating custom text editing widgets.
332 setAttribute(Qt::WA_InputMethodEnabled, true);
334 d->dialog_mode_ = false;
338 GuiWorkArea::~GuiWorkArea()
340 d->buffer_view_->buffer().workAreaManager().remove(this);
342 delete d->buffer_view_;
344 // Completer has a QObject parent and is thus automatically destroyed.
346 // delete completer_;
351 Qt::CursorShape GuiWorkArea::cursorShape() const
353 return viewport()->cursor().shape();
357 void GuiWorkArea::Private::setCursorShape(Qt::CursorShape shape)
359 p->viewport()->setCursor(shape);
363 void GuiWorkArea::Private::updateCursorShape()
365 setCursorShape(buffer_view_->clickableInset()
366 ? Qt::PointingHandCursor : Qt::IBeamCursor);
370 void GuiWorkArea::setGuiView(GuiView & gv)
376 void GuiWorkArea::setBuffer(Buffer & buffer)
378 delete d->buffer_view_;
379 d->buffer_view_ = new BufferView(buffer);
380 buffer.workAreaManager().add(this);
382 // HACK: Prevents an additional redraw when the scrollbar pops up
383 // which regularily happens on documents with more than one page.
384 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
385 // Since we have no geometry information yet, we assume that
386 // a document needs a scrollbar if there is more then four
387 // paragraph in the outermost text.
388 if (buffer.text().paragraphs().size() > 4)
389 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
390 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
394 void GuiWorkArea::fixVerticalScrollBar()
397 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
401 void GuiWorkArea::close()
403 d->lyx_view_->removeWorkArea(this);
407 void GuiWorkArea::setFullScreen(bool full_screen)
409 d->buffer_view_->setFullScreen(full_screen);
410 setFrameStyle(QFrame::NoFrame);
412 setFrameStyle(QFrame::NoFrame);
413 if (lyxrc.full_screen_scrollbar)
414 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
416 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
420 BufferView & GuiWorkArea::bufferView()
422 return *d->buffer_view_;
426 BufferView const & GuiWorkArea::bufferView() const
428 return *d->buffer_view_;
432 void GuiWorkArea::stopBlinkingCursor()
434 d->cursor_timeout_.stop();
439 void GuiWorkArea::startBlinkingCursor()
441 // do not show the cursor if the view is busy
447 d->buffer_view_->cursorPosAndHeight(p, h);
448 // Don't start blinking if the cursor isn't on screen.
449 if (!d->buffer_view_->cursorInView(p, h))
454 //we're not supposed to cache this value.
455 int const time = QApplication::cursorFlashTime() / 2;
458 d->cursor_timeout_.setInterval(time);
459 d->cursor_timeout_.start();
463 void GuiWorkArea::redraw(bool update_metrics)
466 // No need to redraw in this case.
469 // No need to do anything if this is the current view. The BufferView
470 // metrics are already up to date.
471 if (update_metrics || d->lyx_view_ != guiApp->currentView()
472 || d->lyx_view_->currentWorkArea() != this) {
473 // FIXME: it would be nice to optimize for the off-screen case.
474 d->buffer_view_->cursor().fixIfBroken();
475 d->buffer_view_->updateMetrics();
476 d->buffer_view_->cursor().fixIfBroken();
479 // update cursor position, because otherwise it has to wait until
480 // the blinking interval is over
481 if (d->cursor_visible_) {
486 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
488 update(0, 0, viewport()->width(), viewport()->height());
490 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
491 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
492 d->updateScrollbar();
493 d->lyx_view_->updateStatusBar();
495 if (lyxerr.debugging(Debug::WORKAREA))
496 d->buffer_view_->coordCache().dump();
500 d->updateCursorShape();
504 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
506 if (d->lyx_view_->isFullScreen() && d->lyx_view_->menuBar()->isVisible()
507 && lyxrc.full_screen_menubar) {
508 // FIXME HACK: we should not have to do this here. See related comment
509 // in GuiView::event() (QEvent::ShortcutOverride)
510 d->lyx_view_->menuBar()->hide();
513 // In order to avoid bad surprise in the middle of an operation,
514 // we better stop the blinking cursor...
515 // the cursor gets restarted in GuiView::restartCursor()
516 stopBlinkingCursor();
517 guiApp->processKeySym(key, mod);
521 void GuiWorkArea::Private::dispatch(FuncRequest const & cmd0, KeyModifier mod)
524 if (cmd0.action() == LFUN_FILE_OPEN) {
526 lyx_view_->dispatch(cmd0, dr);
532 if (cmd0.action() == LFUN_MOUSE_PRESS) {
533 if (mod == ShiftModifier)
534 cmd = FuncRequest(cmd0, "region-select");
535 else if (mod == ControlModifier)
536 cmd = FuncRequest(cmd0, "paragraph-select");
543 bool const notJustMovingTheMouse =
544 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
546 // In order to avoid bad surprise in the middle of an operation, we better stop
547 // the blinking cursor.
548 if (notJustMovingTheMouse)
549 p->stopBlinkingCursor();
551 buffer_view_->mouseEventDispatch(cmd);
553 // Skip these when selecting
554 // FIXME: let GuiView take care of those.
555 if (cmd.action() != LFUN_MOUSE_MOTION) {
556 completer_->updateVisibility(false, false);
557 lyx_view_->updateDialogs();
558 lyx_view_->updateStatusBar();
561 // GUI tweaks except with mouse motion with no button pressed.
562 if (notJustMovingTheMouse) {
563 // Slight hack: this is only called currently when we
564 // clicked somewhere, so we force through the display
565 // of the new status here.
566 // FIXME: let GuiView take care of those.
567 lyx_view_->clearMessage();
569 // Show the cursor immediately after any operation
570 p->startBlinkingCursor();
577 void GuiWorkArea::Private::resizeBufferView()
579 // WARNING: Please don't put any code that will trigger a repaint here!
580 // We are already inside a paint event.
581 p->stopBlinkingCursor();
582 // Warn our container (GuiView).
587 buffer_view_->cursorPosAndHeight(point, h);
588 bool const cursor_in_view = buffer_view_->cursorInView(point, h);
589 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
591 buffer_view_->scrollToCursor();
594 // Update scrollbars which might have changed due different
595 // BufferView dimension. This is especially important when the
596 // BufferView goes from zero-size to the real-size for the first time,
597 // as the scrollbar paramters are then set for the first time.
600 need_resize_ = false;
602 // Eventually, restart the cursor after the resize event.
603 // We might be resizing even if the focus is on another widget so we only
604 // restart the cursor if we have the focus.
606 QTimer::singleShot(50, p, SLOT(startBlinkingCursor()));
610 void GuiWorkArea::Private::showCursor()
617 buffer_view_->cursorPosAndHeight(p, h);
618 if (!buffer_view_->cursorInView(p, h))
622 bool l_shape = false;
623 Font const & realfont = buffer_view_->cursor().real_current_font;
624 BufferParams const & bp = buffer_view_->buffer().params();
625 bool const samelang = realfont.language() == bp.language;
626 bool const isrtl = realfont.isVisibleRightToLeft();
628 if (!samelang || isrtl != bp.language->rightToLeft())
631 // The ERT language hack needs fixing up
632 if (realfont.language() == latex_language)
635 // show cursor on screen
636 Cursor & cur = buffer_view_->cursor();
637 bool completable = cur.inset().showCompletionCursor()
638 && completer_->completionAvailable()
639 && !completer_->popupVisible()
640 && !completer_->inlineVisible();
641 cursor_visible_ = true;
642 cursor_->recomputeWidth();
644 //int cur_x = buffer_view_->getPos(cur).x_;
645 // We may have decided to slide the cursor row so that cursor
647 p.x_ -= buffer_view_->horizScrollOffset();
649 showCursor(p.x_, p.y_, h, l_shape, isrtl, completable);
653 void GuiWorkArea::Private::hideCursor()
655 if (!cursor_visible_)
658 cursor_visible_ = false;
663 void GuiWorkArea::toggleCursor()
665 if (d->cursor_visible_)
672 void GuiWorkArea::Private::updateScrollbar()
674 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
675 // WARNING: don't touch at the scrollbar value like this:
676 // verticalScrollBar()->setValue(scroll_.position);
677 // because this would cause a recursive signal/slot calling with
678 // GuiWorkArea::scrollTo
679 p->verticalScrollBar()->setRange(scroll_.min, scroll_.max);
680 p->verticalScrollBar()->setPageStep(scroll_.page_step);
681 p->verticalScrollBar()->setSingleStep(scroll_.single_step);
682 p->verticalScrollBar()->setSliderPosition(scroll_.position);
686 void GuiWorkArea::scrollTo(int value)
688 stopBlinkingCursor();
689 d->buffer_view_->scrollDocView(value, true);
691 if (lyxrc.cursor_follows_scrollbar) {
692 d->buffer_view_->setCursorFromScrollbar();
693 // FIXME: let GuiView take care of those.
694 d->lyx_view_->updateLayoutList();
696 // Show the cursor immediately after any operation.
697 startBlinkingCursor();
700 QApplication::syncX();
705 bool GuiWorkArea::event(QEvent * e)
708 case QEvent::ToolTip: {
709 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
710 if (lyxrc.use_tooltip) {
711 QPoint pos = helpEvent->pos();
712 if (pos.x() < viewport()->width()) {
713 QString s = toqstr(d->buffer_view_->toolTip(pos.x(), pos.y()));
714 QToolTip::showText(helpEvent->globalPos(), s);
717 QToolTip::hideText();
719 // Don't forget to accept the event!
724 case QEvent::ShortcutOverride: {
725 // We catch this event in order to catch the Tab or Shift+Tab key press
726 // which are otherwise reserved to focus switching between controls
728 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
729 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
730 || (ke->key() == Qt::Key_Backtab && (
731 ke->modifiers() == Qt::ShiftModifier
732 || ke->modifiers() == Qt::NoModifier))) {
736 return QAbstractScrollArea::event(e);
740 return QAbstractScrollArea::event(e);
746 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
749 if (e->reason() == QContextMenuEvent::Mouse)
750 // the menu name is set on mouse press
751 name = d->context_menu_name_;
753 QPoint pos = e->pos();
754 Cursor const & cur = d->buffer_view_->cursor();
755 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
756 // Do not access the context menu of math right in front of before
757 // the cursor. This does not work when the cursor is in text.
758 Inset * inset = cur.paragraph().getInset(cur.pos());
759 if (inset && inset->asInsetMath())
761 else if (cur.pos() > 0) {
762 Inset * inset = cur.paragraph().getInset(cur.pos() - 1);
767 name = d->buffer_view_->contextMenu(pos.x(), pos.y());
771 QAbstractScrollArea::contextMenuEvent(e);
774 // always show mnemonics when the keyboard is used to show the context menu
775 // FIXME: This should be fixed in Qt itself
776 bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
777 QMenu * menu = guiApp->menus().menu(toqstr(name), *d->lyx_view_, keyboard);
779 QAbstractScrollArea::contextMenuEvent(e);
782 // Position the menu to the right.
783 // FIXME: menu position should be different for RTL text.
784 menu->exec(e->globalPos());
789 void GuiWorkArea::focusInEvent(QFocusEvent * e)
791 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
792 if (d->lyx_view_->currentWorkArea() != this) {
793 d->lyx_view_->setCurrentWorkArea(this);
794 d->lyx_view_->currentWorkArea()->bufferView().buffer().updateBuffer();
797 startBlinkingCursor();
798 QAbstractScrollArea::focusInEvent(e);
802 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
804 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
805 stopBlinkingCursor();
806 QAbstractScrollArea::focusOutEvent(e);
810 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
812 if (d->dc_event_.active && d->dc_event_ == *e) {
813 d->dc_event_.active = false;
814 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
815 q_button_state(e->button()));
821 #if (QT_VERSION < 0x050000)
822 inputContext()->reset();
825 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
826 q_button_state(e->button()));
827 d->dispatch(cmd, q_key_state(e->modifiers()));
829 // Save the context menu on mouse press, because also the mouse
830 // cursor is set on mouse press. Afterwards, we can either release
831 // the mousebutton somewhere else, or the cursor might have moved
832 // due to the DEPM. We need to do this after the mouse has been
833 // set in dispatch(), because the selection state might change.
834 if (e->button() == Qt::RightButton)
835 d->context_menu_name_ = d->buffer_view_->contextMenu(e->x(), e->y());
841 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
843 if (d->synthetic_mouse_event_.timeout.running())
844 d->synthetic_mouse_event_.timeout.stop();
846 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
847 q_button_state(e->button()));
853 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
855 // we kill the triple click if we move
856 doubleClickTimeout();
857 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
858 q_motion_state(e->buttons()));
862 // If we're above or below the work area...
863 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
864 && e->buttons() == mouse_button::button1) {
865 // Make sure only a synthetic event can cause a page scroll,
866 // so they come at a steady rate:
868 // _Force_ a scroll up:
869 cmd.set_y(e->y() - 21);
871 cmd.set_y(e->y() + 21);
872 // Store the event, to be handled when the timeout expires.
873 d->synthetic_mouse_event_.cmd = cmd;
875 if (d->synthetic_mouse_event_.timeout.running()) {
876 // Discard the event. Note that it _may_ be handled
877 // when the timeout expires if
878 // synthetic_mouse_event_.cmd has not been overwritten.
879 // Ie, when the timeout expires, we handle the
880 // most recent event but discard all others that
881 // occurred after the one used to start the timeout
882 // in the first place.
886 d->synthetic_mouse_event_.restart_timeout = true;
887 d->synthetic_mouse_event_.timeout.start();
888 // Fall through to handle this event...
890 } else if (d->synthetic_mouse_event_.timeout.running()) {
891 // Store the event, to be possibly handled when the timeout
893 // Once the timeout has expired, normal control is returned
894 // to mouseMoveEvent (restart_timeout = false).
895 // This results in a much smoother 'feel' when moving the
896 // mouse back into the work area.
897 d->synthetic_mouse_event_.cmd = cmd;
898 d->synthetic_mouse_event_.restart_timeout = false;
905 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
907 // Wheel rotation by one notch results in a delta() of 120 (see
908 // documentation of QWheelEvent)
909 double const delta = ev->delta() / 120.0;
911 switch (lyxrc.scroll_wheel_zoom) {
912 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
913 zoom = ev->modifiers() & Qt::ControlModifier;
914 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
916 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
917 zoom = ev->modifiers() & Qt::ShiftModifier;
918 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
920 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
921 zoom = ev->modifiers() & Qt::AltModifier;
922 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
924 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
928 docstring arg = convert<docstring>(int(5 * delta));
929 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
933 // Take into account the desktop wide settings.
934 int const lines = qApp->wheelScrollLines();
935 int const page_step = verticalScrollBar()->pageStep();
936 // Test if the wheel mouse is set to one screen at a time.
937 int scroll_value = lines > page_step
938 ? page_step : lines * verticalScrollBar()->singleStep();
940 // Take into account the rotation and the user preferences.
941 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
942 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
943 << " delta = " << delta << " scroll_value = " << scroll_value
944 << " page_step = " << page_step);
946 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
952 void GuiWorkArea::generateSyntheticMouseEvent()
954 int const e_y = d->synthetic_mouse_event_.cmd.y();
955 int const wh = d->buffer_view_->workHeight();
956 bool const up = e_y < 0;
957 bool const down = e_y > wh;
959 // Set things off to generate the _next_ 'pseudo' event.
961 if (d->synthetic_mouse_event_.restart_timeout) {
962 // This is some magic formulae to determine the speed
963 // of scrolling related to the position of the mouse.
966 int dist = up ? -e_y : e_y - wh;
967 time = max(min(200, 250000 / (dist * dist)), 1) ;
970 step = 80000 / (time * time);
974 d->synthetic_mouse_event_.timeout.setTimeout(time);
975 d->synthetic_mouse_event_.timeout.start();
978 // Can we scroll further ?
979 int const value = verticalScrollBar()->value();
980 if (value == verticalScrollBar()->maximum()
981 || value == verticalScrollBar()->minimum()) {
982 d->synthetic_mouse_event_.timeout.stop();
987 if (step <= 2 * wh) {
988 d->buffer_view_->scroll(up ? -step : step);
989 d->buffer_view_->updateMetrics();
991 d->buffer_view_->scrollDocView(value + (up ? -step : step), false);
994 // In which paragraph do we have to set the cursor ?
995 Cursor & cur = d->buffer_view_->cursor();
996 // FIXME: we don't know howto handle math.
997 Text * text = cur.text();
1000 TextMetrics const & tm = d->buffer_view_->textMetrics(text);
1002 pair<pit_type, const ParagraphMetrics *> pp = up ? tm.first() : tm.last();
1003 ParagraphMetrics const & pm = *pp.second;
1004 pit_type const pit = pp.first;
1006 if (pm.rows().empty())
1009 // Find the row at which we set the cursor.
1010 RowList::const_iterator rit = pm.rows().begin();
1011 RowList::const_iterator rlast = pm.rows().end();
1012 int yy = pm.position() - pm.ascent();
1013 for (--rlast; rit != rlast; ++rit) {
1014 int h = rit->height();
1015 if ((up && yy + h > 0)
1016 || (!up && yy + h > wh - defaultRowHeight()))
1021 // Find the position of the cursor
1023 int x = d->synthetic_mouse_event_.cmd.x();
1024 pos_type const pos = tm.getPosNearX(*rit, x, bound);
1029 cur.boundary(bound);
1031 d->buffer_view_->buffer().changed(false);
1036 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
1038 // Do not process here some keys if dialog_mode_ is set
1040 && (ev->modifiers() == Qt::NoModifier
1041 || ev->modifiers() == Qt::ShiftModifier)
1042 && (ev->key() == Qt::Key_Escape
1043 || ev->key() == Qt::Key_Enter
1044 || ev->key() == Qt::Key_Return)
1050 // intercept some keys if completion popup is visible
1051 if (d->completer_->popupVisible()) {
1052 switch (ev->key()) {
1054 case Qt::Key_Return:
1055 d->completer_->activate();
1061 // do nothing if there are other events
1062 // (the auto repeated events come too fast)
1063 // it looks like this is only needed on X11
1064 #if defined(Q_WS_X11) || defined(QPA_XCB)
1065 if (qApp->hasPendingEvents() && ev->isAutoRepeat()) {
1066 switch (ev->key()) {
1067 case Qt::Key_PageDown:
1068 case Qt::Key_PageUp:
1073 LYXERR(Debug::KEY, "system is busy: scroll key event ignored");
1080 KeyModifier m = q_key_state(ev->modifiers());
1083 if (m & ShiftModifier)
1085 if (m & ControlModifier)
1087 if (m & AltModifier)
1089 if (m & MetaModifier)
1092 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1093 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
1094 << " keyState: " << str);
1097 setKeySymbol(&sym, ev);
1099 processKeySym(sym, q_key_state(ev->modifiers()));
1107 void GuiWorkArea::doubleClickTimeout()
1109 d->dc_event_.active = false;
1113 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1115 d->dc_event_ = DoubleClick(ev);
1116 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1117 SLOT(doubleClickTimeout()));
1118 FuncRequest cmd(LFUN_MOUSE_DOUBLE,
1120 q_button_state(ev->button()));
1126 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1128 QAbstractScrollArea::resizeEvent(ev);
1129 d->need_resize_ = true;
1134 void GuiWorkArea::Private::update(int x, int y, int w, int h)
1136 p->viewport()->update(x, y, w, h);
1140 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1142 QRectF const rc = ev->rect();
1143 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1144 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1146 if (d->needResize()) {
1148 d->resizeBufferView();
1149 if (d->cursor_visible_) {
1155 QPainter pain(viewport());
1156 double const pr = pixelRatio();
1157 QRectF const rcs = QRectF(rc.x() * pr, rc.y() * pr, rc.width() * pr, rc.height() * pr);
1159 if (lyxrc.use_qimage) {
1160 QImage const & image = static_cast<QImage const &>(*d->screen_);
1161 pain.drawImage(rc, image, rcs);
1163 QPixmap const & pixmap = static_cast<QPixmap const &>(*d->screen_);
1164 pain.drawPixmap(rc, pixmap, rcs);
1166 d->cursor_->draw(pain);
1171 void GuiWorkArea::Private::updateScreen()
1173 GuiPainter pain(screen_, p->pixelRatio());
1174 buffer_view_->draw(pain);
1178 void GuiWorkArea::Private::showCursor(int x, int y, int h,
1179 bool l_shape, bool rtl, bool completable)
1181 if (schedule_redraw_) {
1182 // This happens when a graphic conversion is finished. As we don't know
1183 // the size of the new graphics, it's better the update everything.
1184 // We can't use redraw() here because this would trigger a infinite
1185 // recursive loop with showCursor().
1186 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
1189 p->viewport()->update(QRect(0, 0, p->viewport()->width(), p->viewport()->height()));
1190 schedule_redraw_ = false;
1191 // Show the cursor immediately after the update.
1197 cursor_->update(x, y, h, l_shape, rtl, completable);
1199 p->viewport()->update(cursor_->rect());
1203 void GuiWorkArea::Private::removeCursor()
1206 //if (!qApp->focusWidget())
1207 p->viewport()->update(cursor_->rect());
1211 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1213 QString const & commit_string = e->commitString();
1214 docstring const & preedit_string
1215 = qstring_to_ucs4(e->preeditString());
1217 if (!commit_string.isEmpty()) {
1219 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1220 << " commitString: " << e->commitString());
1224 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
1225 for (int i = 0; i != commit_string.size(); ++i) {
1226 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
1231 // Hide the cursor during the kana-kanji transformation.
1232 if (preedit_string.empty())
1233 startBlinkingCursor();
1235 stopBlinkingCursor();
1237 // last_width : for checking if last preedit string was/wasn't empty.
1239 // We could have more than one work area, right?
1240 static bool last_width = false;
1241 if (!last_width && preedit_string.empty()) {
1242 // if last_width is last length of preedit string.
1247 GuiPainter pain(d->screen_, pixelRatio());
1248 d->buffer_view_->updateMetrics();
1249 d->buffer_view_->draw(pain);
1250 FontInfo font = d->buffer_view_->cursor().getFont().fontInfo();
1251 FontMetrics const & fm = theFontMetrics(font);
1252 int height = fm.maxHeight();
1253 int cur_x = d->cursor_->rect().left();
1254 int cur_y = d->cursor_->rect().bottom();
1256 // redraw area of preedit string.
1257 update(0, cur_y - height, viewport()->width(),
1258 (height + 1) * d->preedit_lines_);
1260 if (preedit_string.empty()) {
1262 d->preedit_lines_ = 1;
1268 // att : stores an IM attribute.
1269 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
1271 // get attributes of input method cursor.
1272 // cursor_pos : cursor position in preedit string.
1273 size_t cursor_pos = 0;
1274 bool cursor_is_visible = false;
1275 for (int i = 0; i != att.size(); ++i) {
1276 if (att.at(i).type == QInputMethodEvent::Cursor) {
1277 cursor_pos = att.at(i).start;
1278 cursor_is_visible = att.at(i).length != 0;
1283 size_t preedit_length = preedit_string.length();
1285 // get position of selection in input method.
1286 // FIXME: isn't there a way to do this simplier?
1287 // rStart : cursor position in selected string in IM.
1289 // rLength : selected string length in IM.
1291 if (cursor_pos < preedit_length) {
1292 for (int i = 0; i != att.size(); ++i) {
1293 if (att.at(i).type == QInputMethodEvent::TextFormat) {
1294 if (att.at(i).start <= int(cursor_pos)
1295 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
1296 rStart = att.at(i).start;
1297 rLength = att.at(i).length;
1298 if (!cursor_is_visible)
1299 cursor_pos += rLength;
1306 rStart = cursor_pos;
1310 int const right_margin = d->buffer_view_->rightMargin();
1311 Painter::preedit_style ps;
1312 // Most often there would be only one line:
1313 d->preedit_lines_ = 1;
1314 for (size_t pos = 0; pos != preedit_length; ++pos) {
1315 char_type const typed_char = preedit_string[pos];
1316 // reset preedit string style
1317 ps = Painter::preedit_default;
1319 // if we reached the right extremity of the screen, go to next line.
1320 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
1321 cur_x = right_margin;
1322 cur_y += height + 1;
1323 ++d->preedit_lines_;
1325 // preedit strings are displayed with dashed underline
1326 // and partial strings are displayed white on black indicating
1327 // that we are in selecting mode in the input method.
1328 // FIXME: rLength == preedit_length is not a changing condition
1329 // FIXME: should be put out of the loop.
1331 && pos < rStart + rLength
1332 && !(cursor_pos < rLength && rLength == preedit_length))
1333 ps = Painter::preedit_selecting;
1335 if (pos == cursor_pos
1336 && (cursor_pos < rLength && rLength == preedit_length))
1337 ps = Painter::preedit_cursor;
1339 // draw one character and update cur_x.
1340 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1343 // update the preedit string screen area.
1344 update(0, cur_y - d->preedit_lines_*height, viewport()->width(),
1345 (height + 1) * d->preedit_lines_);
1347 // Don't forget to accept the event!
1352 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1354 QRect cur_r(0, 0, 0, 0);
1356 // this is the CJK-specific composition window position and
1357 // the context menu position when the menu key is pressed.
1358 case Qt::ImMicroFocus:
1359 cur_r = d->cursor_->rect();
1360 if (d->preedit_lines_ != 1)
1362 cur_r.moveBottom(cur_r.bottom()
1363 + cur_r.height() * (d->preedit_lines_ - 1));
1364 // return lower right of cursor in LyX.
1367 return QWidget::inputMethodQuery(query);
1372 void GuiWorkArea::updateWindowTitle()
1374 docstring maximize_title;
1375 docstring minimize_title;
1377 Buffer const & buf = d->buffer_view_->buffer();
1378 FileName const file_name = buf.fileName();
1379 if (!file_name.empty()) {
1380 maximize_title = file_name.displayName(130);
1381 minimize_title = from_utf8(file_name.onlyFileName());
1382 if (buf.lyxvc().inUse()) {
1383 if (buf.lyxvc().locking())
1384 maximize_title += _(" (version control, locking)");
1386 maximize_title += _(" (version control)");
1388 if (!buf.isClean()) {
1389 maximize_title += _(" (changed)");
1390 minimize_title += char_type('*');
1392 if (buf.isReadonly())
1393 maximize_title += _(" (read only)");
1396 QString const new_title = toqstr(maximize_title);
1397 if (new_title != windowTitle()) {
1398 QWidget::setWindowTitle(new_title);
1399 QWidget::setWindowIconText(toqstr(minimize_title));
1405 bool GuiWorkArea::isFullScreen() const
1407 return d->lyx_view_ && d->lyx_view_->isFullScreen();
1411 void GuiWorkArea::scheduleRedraw()
1413 d->schedule_redraw_ = true;
1417 bool GuiWorkArea::inDialogMode() const
1419 return d->dialog_mode_;
1423 void GuiWorkArea::setDialogMode(bool mode)
1425 d->dialog_mode_ = mode;
1429 GuiCompleter & GuiWorkArea::completer()
1431 return *d->completer_;
1434 GuiView const & GuiWorkArea::view() const
1436 return *d->lyx_view_;
1440 GuiView & GuiWorkArea::view()
1442 return *d->lyx_view_;
1445 ////////////////////////////////////////////////////////////////////
1449 ////////////////////////////////////////////////////////////////////
1452 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1454 support::TempFile tempfile("embedded.internal");
1455 tempfile.setAutoRemove(false);
1456 buffer_ = theBufferList().newInternalBuffer(tempfile.name().absFileName());
1457 buffer_->setUnnamed(true);
1458 buffer_->setFullyLoaded(true);
1459 setBuffer(*buffer_);
1460 setDialogMode(true);
1464 EmbeddedWorkArea::~EmbeddedWorkArea()
1466 // No need to destroy buffer and bufferview here, because it is done
1467 // in theBufferList() destruction loop at application exit
1471 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1474 GuiWorkArea::closeEvent(ev);
1478 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1481 GuiWorkArea::hideEvent(ev);
1485 QSize EmbeddedWorkArea::sizeHint () const
1488 // GuiWorkArea sets the size to the screen's viewport
1489 // by returning a value this gets overridden
1490 // EmbeddedWorkArea is now sized to fit in the layout
1491 // of the parent, and has a minimum size set in GuiWorkArea
1492 // which is what we return here
1493 return QSize(100, 70);
1497 void EmbeddedWorkArea::disable()
1499 stopBlinkingCursor();
1500 if (view().currentWorkArea() != this)
1502 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1503 // tolerates it and shows the background logo), what happens if
1504 // an EmbeddedWorkArea is closed after closing all document WAs
1505 view().setCurrentWorkArea(view().currentMainWorkArea());
1508 ////////////////////////////////////////////////////////////////////
1512 ////////////////////////////////////////////////////////////////////
1515 class NoTabFrameMacStyle : public QProxyStyle {
1518 QRect subElementRect(SubElement element, const QStyleOption * option,
1519 const QWidget * widget = 0) const
1521 QRect rect = QProxyStyle::subElementRect(element, option, widget);
1522 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1524 // The Qt Mac style puts the contents into a 3 pixel wide box
1525 // which looks very ugly and not like other Mac applications.
1526 // Hence we remove this here, and moreover the 16 pixel round
1527 // frame above if the tab bar is hidden.
1528 if (element == QStyle::SE_TabWidgetTabContents) {
1529 rect.adjust(- rect.left(), 0, rect.left(), 0);
1538 NoTabFrameMacStyle noTabFrameMacStyle;
1542 TabWorkArea::TabWorkArea(QWidget * parent)
1543 : QTabWidget(parent), clicked_tab_(-1)
1546 setStyle(&noTabFrameMacStyle);
1549 QPalette pal = palette();
1550 pal.setColor(QPalette::Active, QPalette::Button,
1551 pal.color(QPalette::Active, QPalette::Window));
1552 pal.setColor(QPalette::Disabled, QPalette::Button,
1553 pal.color(QPalette::Disabled, QPalette::Window));
1554 pal.setColor(QPalette::Inactive, QPalette::Button,
1555 pal.color(QPalette::Inactive, QPalette::Window));
1557 QObject::connect(this, SIGNAL(currentChanged(int)),
1558 this, SLOT(on_currentTabChanged(int)));
1560 closeBufferButton = new QToolButton(this);
1561 closeBufferButton->setPalette(pal);
1562 // FIXME: rename the icon to closebuffer.png
1563 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "png")));
1564 closeBufferButton->setText("Close File");
1565 closeBufferButton->setAutoRaise(true);
1566 closeBufferButton->setCursor(Qt::ArrowCursor);
1567 closeBufferButton->setToolTip(qt_("Close File"));
1568 closeBufferButton->setEnabled(true);
1569 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1570 this, SLOT(closeCurrentBuffer()));
1571 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1573 // setup drag'n'drop
1574 QTabBar* tb = new DragTabBar;
1575 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1576 this, SLOT(moveTab(int, int)));
1577 tb->setElideMode(Qt::ElideNone);
1580 // make us responsible for the context menu of the tabbar
1581 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1582 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1583 this, SLOT(showContextMenu(const QPoint &)));
1584 connect(tb, SIGNAL(tabCloseRequested(int)),
1585 this, SLOT(closeTab(int)));
1587 setUsesScrollButtons(true);
1591 void TabWorkArea::paintEvent(QPaintEvent * event)
1593 if (tabBar()->isVisible()) {
1594 QTabWidget::paintEvent(event);
1596 // Prevent the selected tab to influence the
1597 // painting of the frame of the tab widget.
1598 // This is needed for gtk style in Qt.
1599 QStylePainter p(this);
1600 #if QT_VERSION < 0x050000
1601 QStyleOptionTabWidgetFrameV2 opt;
1603 QStyleOptionTabWidgetFrame opt;
1605 initStyleOption(&opt);
1606 opt.rect = style()->subElementRect(QStyle::SE_TabWidgetTabPane,
1608 opt.selectedTabRect = QRect();
1609 p.drawPrimitive(QStyle::PE_FrameTabWidget, opt);
1614 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1616 if (event->button() != Qt::LeftButton)
1619 // return early if double click on existing tabs
1620 for (int i = 0; i < count(); ++i)
1621 if (tabBar()->tabRect(i).contains(event->pos()))
1624 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1628 void TabWorkArea::setFullScreen(bool full_screen)
1630 for (int i = 0; i != count(); ++i) {
1631 if (GuiWorkArea * wa = workArea(i))
1632 wa->setFullScreen(full_screen);
1635 if (lyxrc.full_screen_tabbar)
1636 showBar(!full_screen && count() > 1);
1638 showBar(count() > 1);
1642 void TabWorkArea::showBar(bool show)
1644 tabBar()->setEnabled(show);
1645 tabBar()->setVisible(show);
1646 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1647 setTabsClosable(!lyxrc.single_close_tab_button);
1651 GuiWorkArea * TabWorkArea::currentWorkArea()
1656 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
1662 GuiWorkArea * TabWorkArea::workArea(int index)
1664 return dynamic_cast<GuiWorkArea *>(widget(index));
1668 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
1670 // FIXME: this method doesn't work if we have more than work area
1671 // showing the same buffer.
1672 for (int i = 0; i != count(); ++i) {
1673 GuiWorkArea * wa = workArea(i);
1674 LASSERT(wa, return 0);
1675 if (&wa->bufferView().buffer() == &buffer)
1682 void TabWorkArea::closeAll()
1685 GuiWorkArea * wa = workArea(0);
1686 LASSERT(wa, return);
1693 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1695 LASSERT(work_area, return false);
1696 int index = indexOf(work_area);
1700 if (index == currentIndex())
1701 // Make sure the work area is up to date.
1702 on_currentTabChanged(index);
1704 // Switch to the work area.
1705 setCurrentIndex(index);
1706 work_area->setFocus();
1712 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1714 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1715 wa->setUpdatesEnabled(false);
1716 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1717 // when hiding it again below).
1718 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1719 showBar(count() > 0);
1720 addTab(wa, wa->windowTitle());
1721 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1722 this, SLOT(updateTabTexts()));
1723 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1724 setFullScreen(true);
1726 // Hide tabbar if there's only one tab.
1727 showBar(count() > 1);
1735 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1737 LASSERT(work_area, return false);
1738 int index = indexOf(work_area);
1742 work_area->setUpdatesEnabled(false);
1747 // make sure the next work area is enabled.
1748 currentWidget()->setUpdatesEnabled(true);
1749 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1750 setFullScreen(true);
1752 // Show tabbar only if there's more than one tab.
1753 showBar(count() > 1);
1755 lastWorkAreaRemoved();
1763 void TabWorkArea::on_currentTabChanged(int i)
1765 // returns e.g. on application destruction
1768 GuiWorkArea * wa = workArea(i);
1769 LASSERT(wa, return);
1770 wa->setUpdatesEnabled(true);
1774 currentWorkAreaChanged(wa);
1776 LYXERR(Debug::GUI, "currentTabChanged " << i
1777 << " File: " << wa->bufferView().buffer().absFileName());
1781 void TabWorkArea::closeCurrentBuffer()
1784 if (clicked_tab_ == -1)
1785 wa = currentWorkArea();
1787 wa = workArea(clicked_tab_);
1788 LASSERT(wa, return);
1790 wa->view().closeWorkArea(wa);
1794 void TabWorkArea::hideCurrentTab()
1797 if (clicked_tab_ == -1)
1798 wa = currentWorkArea();
1800 wa = workArea(clicked_tab_);
1801 LASSERT(wa, return);
1803 wa->view().hideWorkArea(wa);
1807 void TabWorkArea::closeTab(int index)
1809 on_currentTabChanged(index);
1812 wa = currentWorkArea();
1814 wa = workArea(index);
1815 LASSERT(wa, return);
1817 wa->view().closeWorkArea(wa);
1824 /// make vector happy
1827 DisplayPath(int tab, FileName const & filename)
1830 filename_ = (filename.extension() == "lyx") ?
1831 toqstr(filename.onlyFileNameWithoutExt())
1832 : toqstr(filename.onlyFileName());
1833 postfix_ = toqstr(filename.absoluteFilePath()).
1834 split("/", QString::SkipEmptyParts);
1835 postfix_.pop_back();
1836 abs_ = toqstr(filename.absoluteFilePath());
1837 dottedPrefix_ = false;
1840 /// Absolute path for debugging.
1845 /// Add the first segment from the postfix or three dots to the prefix.
1846 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1847 /// when really needed.
1848 void shiftPathSegment(bool dotted)
1850 if (postfix_.count() <= 0)
1854 if (dottedPrefix_ && !prefix_.isEmpty())
1856 prefix_ += postfix_.front() + "/";
1858 dottedPrefix_ = dotted && !prefix_.isEmpty();
1859 postfix_.pop_front();
1862 QString displayString() const
1864 if (prefix_.isEmpty())
1867 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1868 return prefix_ + (dots ? ".../" : "") + filename_;
1871 QString forecastPathString() const
1873 if (postfix_.count() == 0)
1874 return displayString();
1877 + (dottedPrefix_ ? ".../" : "")
1878 + postfix_.front() + "/";
1881 bool final() const { return postfix_.empty(); }
1883 int tab() const { return tab_; }
1889 QStringList postfix_;
1902 bool operator<(DisplayPath const & a, DisplayPath const & b)
1904 return a.displayString() < b.displayString();
1908 bool operator==(DisplayPath const & a, DisplayPath const & b)
1910 return a.displayString() == b.displayString();
1914 void TabWorkArea::updateTabTexts()
1919 std::list<DisplayPath> paths;
1920 typedef std::list<DisplayPath>::iterator It;
1922 // collect full names first: path into postfix, empty prefix and
1923 // filename without extension
1924 for (size_t i = 0; i < n; ++i) {
1925 GuiWorkArea * i_wa = workArea(i);
1926 FileName const fn = i_wa->bufferView().buffer().fileName();
1927 paths.push_back(DisplayPath(i, fn));
1930 // go through path segments and see if it helps to make the path more unique
1931 bool somethingChanged = true;
1932 bool allFinal = false;
1933 while (somethingChanged && !allFinal) {
1934 // adding path segments changes order
1937 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1938 somethingChanged = false;
1941 // find segments which are not unique (i.e. non-atomic)
1942 It it = paths.begin();
1944 QString segString = it->displayString();
1945 for (; it != paths.end(); ++it) {
1946 // look to the next item
1951 allFinal = allFinal && it->final();
1953 LYXERR(Debug::GUI, "it = " << it->abs()
1954 << " => " << it->displayString());
1956 // still the same segment?
1958 if ((next != paths.end()
1959 && (nextString = next->displayString()) == segString))
1961 LYXERR(Debug::GUI, "segment ended");
1963 // only a trivial one with one element?
1964 if (it == segStart) {
1965 // start new segment
1967 segString = nextString;
1971 // we found a non-atomic segment segStart <= sit <= it < next.
1972 // Shift path segments and hope for the best
1973 // that it makes the path more unique.
1974 somethingChanged = true;
1976 QString dspString = sit->forecastPathString();
1977 LYXERR(Debug::GUI, "first forecast found for "
1978 << sit->abs() << " => " << dspString);
1980 bool moreUnique = false;
1981 for (; sit != next; ++sit) {
1982 if (sit->forecastPathString() != dspString) {
1983 LYXERR(Debug::GUI, "different forecast found for "
1984 << sit->abs() << " => " << sit->forecastPathString());
1988 LYXERR(Debug::GUI, "same forecast found for "
1989 << sit->abs() << " => " << dspString);
1992 // if the path segment helped, add it. Otherwise add dots
1993 bool dots = !moreUnique;
1994 LYXERR(Debug::GUI, "using dots = " << dots);
1995 for (sit = segStart; sit != next; ++sit) {
1996 sit->shiftPathSegment(dots);
1997 LYXERR(Debug::GUI, "shifting "
1998 << sit->abs() << " => " << sit->displayString());
2001 // start new segment
2003 segString = nextString;
2007 // set new tab titles
2008 for (It it = paths.begin(); it != paths.end(); ++it) {
2009 int const tab_index = it->tab();
2010 Buffer const & buf = workArea(tab_index)->bufferView().buffer();
2011 QString tab_text = it->displayString().replace("&", "&&");
2012 if (!buf.fileName().empty() && !buf.isClean())
2014 setTabText(tab_index, tab_text);
2015 setTabToolTip(tab_index, it->abs());
2020 void TabWorkArea::showContextMenu(const QPoint & pos)
2023 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
2024 if (clicked_tab_ == -1)
2029 popup.addAction(QIcon(getPixmap("images/", "hidetab", "png")),
2030 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
2031 popup.addAction(QIcon(getPixmap("images/", "closetab", "png")),
2032 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
2033 popup.exec(tabBar()->mapToGlobal(pos));
2039 void TabWorkArea::moveTab(int fromIndex, int toIndex)
2041 QWidget * w = widget(fromIndex);
2042 QIcon icon = tabIcon(fromIndex);
2043 QString text = tabText(fromIndex);
2045 setCurrentIndex(fromIndex);
2046 removeTab(fromIndex);
2047 insertTab(toIndex, w, icon, text);
2048 setCurrentIndex(toIndex);
2052 DragTabBar::DragTabBar(QWidget* parent)
2055 setAcceptDrops(true);
2056 setTabsClosable(!lyxrc.single_close_tab_button);
2060 void DragTabBar::mousePressEvent(QMouseEvent * event)
2062 if (event->button() == Qt::LeftButton)
2063 dragStartPos_ = event->pos();
2064 QTabBar::mousePressEvent(event);
2068 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
2070 // If the left button isn't pressed anymore then return
2071 if (!(event->buttons() & Qt::LeftButton))
2074 // If the distance is too small then return
2075 if ((event->pos() - dragStartPos_).manhattanLength()
2076 < QApplication::startDragDistance())
2079 // did we hit something after all?
2080 int tab = tabAt(dragStartPos_);
2084 // simulate button release to remove highlight from button
2085 int i = currentIndex();
2086 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
2087 event->button(), event->buttons(), 0);
2088 QTabBar::mouseReleaseEvent(&me);
2092 QDrag * drag = new QDrag(this);
2093 QMimeData * mimeData = new QMimeData;
2094 // a crude way to distinguish tab-reodering drops from other ones
2095 mimeData->setData("action", "tab-reordering") ;
2096 drag->setMimeData(mimeData);
2098 // get tab pixmap as cursor
2099 QRect r = tabRect(tab);
2100 QPixmap pixmap(r.size());
2101 render(&pixmap, - r.topLeft());
2102 drag->setPixmap(pixmap);
2107 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
2109 // Only accept if it's an tab-reordering request
2110 QMimeData const * m = event->mimeData();
2111 QStringList formats = m->formats();
2112 if (formats.contains("action")
2113 && m->data("action") == "tab-reordering")
2114 event->acceptProposedAction();
2118 void DragTabBar::dropEvent(QDropEvent * event)
2120 int fromIndex = tabAt(dragStartPos_);
2121 int toIndex = tabAt(event->pos());
2123 // Tell interested objects that
2124 if (fromIndex != toIndex)
2125 tabMoveRequested(fromIndex, toIndex);
2126 event->acceptProposedAction();
2130 } // namespace frontend
2133 #include "moc_GuiWorkArea.cpp"