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;
135 CursorWidget() : rtl_(false), l_shape_(false), completable_(false),
136 show_(false), x_(0), cursor_width_(0)
141 void draw(QPainter & painter)
143 if (!show_ || !rect_.isValid())
147 int l = x_ - rect_.left();
148 int r = rect_.right() - x_;
149 int bot = rect_.bottom();
151 // draw vertical line
152 painter.fillRect(x_, y, cursor_width_, rect_.height(), color_);
154 // draw RTL/LTR indication
155 painter.setPen(color_);
158 painter.drawLine(x_, bot, x_ - l, bot);
160 painter.drawLine(x_, bot, x_ + cursor_width_ + r, bot);
163 // draw completion triangle
165 int m = y + rect_.height() / 2;
166 int d = TabIndicatorWidth - 1;
168 painter.drawLine(x_ - 1, m - d, x_ - 1 - d, m);
169 painter.drawLine(x_ - 1, m + d, x_ - 1 - d, m);
171 painter.drawLine(x_ + cursor_width_, m - d, x_ + cursor_width_ + d, m);
172 painter.drawLine(x_ + cursor_width_, m + d, x_ + cursor_width_ + d, m);
177 void update(int x, int y, int h, bool l_shape,
178 bool rtl, bool completable)
180 color_ = guiApp->colorCache().get(Color_cursor);
183 completable_ = completable;
186 // extension to left and right
190 // RTL/LTR indication
198 // completion triangle
201 l = max(l, TabIndicatorWidth);
203 r = max(r, TabIndicatorWidth);
206 // compute overall rectangle
207 rect_ = QRect(x - l, y, cursor_width_ + r + l, h);
210 void show(bool set_show = true) { show_ = set_show; }
211 void hide() { show_ = false; }
212 int cursorWidth() const { return cursor_width_; }
213 void recomputeWidth() {
214 cursor_width_ = lyxrc.cursor_width
216 : 1 + int((lyxrc.zoom + 50) / 200.0);
219 QRect const & rect() { return rect_; }
222 /// cursor is in RTL or LTR text
224 /// indication for RTL or LTR
226 /// triangle to show that a completion is available
232 /// rectangle, possibly with l_shape and completion triangle
234 /// x position (were the vertical line is drawn)
241 // This is a 'heartbeat' generating synthetic mouse move events when the
242 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
243 SyntheticMouseEvent::SyntheticMouseEvent()
244 : timeout(200), restart_timeout(true)
248 GuiWorkArea::Private::Private(GuiWorkArea * parent)
249 : p(parent), screen_(0), buffer_view_(0), read_only_(false), lyx_view_(0),
250 cursor_visible_(false), cursor_(0),
251 need_resize_(false), schedule_redraw_(false), preedit_lines_(1),
253 completer_(new GuiCompleter(p, p)), dialog_mode_(false)
258 GuiWorkArea::GuiWorkArea(QWidget * /* w */)
259 : d(new Private(this))
264 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
265 : d(new Private(this))
268 buffer.params().display_pixel_ratio = theGuiApp()->pixelRatio();
274 double GuiWorkArea::pixelRatio() const
276 #if QT_VERSION >= 0x050000
277 return devicePixelRatio();
284 void GuiWorkArea::init()
287 connect(&d->cursor_timeout_, SIGNAL(timeout()),
288 this, SLOT(toggleCursor()));
290 int const time = QApplication::cursorFlashTime() / 2;
292 d->cursor_timeout_.setInterval(time);
293 d->cursor_timeout_.start();
295 // let's initialize this just to be safe
296 d->cursor_timeout_.setInterval(500);
300 // With Qt4.5 a mouse event will happen before the first paint event
301 // so make sure that the buffer view has an up to date metrics.
302 d->buffer_view_->resize(viewport()->width(), viewport()->height());
303 d->cursor_ = new frontend::CursorWidget();
306 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
307 setAcceptDrops(true);
308 setMouseTracking(true);
309 setMinimumSize(100, 70);
310 setFrameStyle(QFrame::NoFrame);
313 viewport()->setAutoFillBackground(false);
314 // We don't need double-buffering nor SystemBackground on
315 // the viewport because we have our own backing pixmap.
316 viewport()->setAttribute(Qt::WA_NoSystemBackground);
318 setFocusPolicy(Qt::StrongFocus);
320 d->setCursorShape(Qt::IBeamCursor);
322 d->synthetic_mouse_event_.timeout.timeout.connect(
323 bind(&GuiWorkArea::generateSyntheticMouseEvent,
326 // Initialize the vertical Scroll Bar
327 QObject::connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
328 this, SLOT(scrollTo(int)));
330 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
331 << " viewport height: " << viewport()->height());
333 // Enables input methods for asian languages.
334 // Must be set when creating custom text editing widgets.
335 setAttribute(Qt::WA_InputMethodEnabled, true);
337 d->dialog_mode_ = false;
341 GuiWorkArea::~GuiWorkArea()
343 d->buffer_view_->buffer().workAreaManager().remove(this);
345 delete d->buffer_view_;
347 // Completer has a QObject parent and is thus automatically destroyed.
349 // delete completer_;
354 Qt::CursorShape GuiWorkArea::cursorShape() const
356 return viewport()->cursor().shape();
360 void GuiWorkArea::Private::setCursorShape(Qt::CursorShape shape)
362 p->viewport()->setCursor(shape);
366 void GuiWorkArea::Private::updateCursorShape()
368 setCursorShape(buffer_view_->clickableInset()
369 ? Qt::PointingHandCursor : Qt::IBeamCursor);
373 void GuiWorkArea::setGuiView(GuiView & gv)
379 void GuiWorkArea::setBuffer(Buffer & buffer)
381 delete d->buffer_view_;
382 d->buffer_view_ = new BufferView(buffer);
383 buffer.workAreaManager().add(this);
385 // HACK: Prevents an additional redraw when the scrollbar pops up
386 // which regularily happens on documents with more than one page.
387 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
388 // Since we have no geometry information yet, we assume that
389 // a document needs a scrollbar if there is more then four
390 // paragraph in the outermost text.
391 if (buffer.text().paragraphs().size() > 4)
392 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
393 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
397 void GuiWorkArea::fixVerticalScrollBar()
400 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
404 void GuiWorkArea::close()
406 d->lyx_view_->removeWorkArea(this);
410 void GuiWorkArea::setFullScreen(bool full_screen)
412 d->buffer_view_->setFullScreen(full_screen);
413 setFrameStyle(QFrame::NoFrame);
415 setFrameStyle(QFrame::NoFrame);
416 if (lyxrc.full_screen_scrollbar)
417 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
419 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
423 BufferView & GuiWorkArea::bufferView()
425 return *d->buffer_view_;
429 BufferView const & GuiWorkArea::bufferView() const
431 return *d->buffer_view_;
435 void GuiWorkArea::stopBlinkingCursor()
437 d->cursor_timeout_.stop();
442 void GuiWorkArea::startBlinkingCursor()
444 // do not show the cursor if the view is busy
450 d->buffer_view_->cursorPosAndHeight(p, h);
451 // Don't start blinking if the cursor isn't on screen.
452 if (!d->buffer_view_->cursorInView(p, h))
457 //we're not supposed to cache this value.
458 int const time = QApplication::cursorFlashTime() / 2;
461 d->cursor_timeout_.setInterval(time);
462 d->cursor_timeout_.start();
466 void GuiWorkArea::redraw(bool update_metrics)
469 // No need to redraw in this case.
472 // No need to do anything if this is the current view. The BufferView
473 // metrics are already up to date.
474 if (update_metrics || d->lyx_view_ != guiApp->currentView()
475 || d->lyx_view_->currentWorkArea() != this) {
476 // FIXME: it would be nice to optimize for the off-screen case.
477 d->buffer_view_->cursor().fixIfBroken();
478 d->buffer_view_->updateMetrics();
479 d->buffer_view_->cursor().fixIfBroken();
482 // update cursor position, because otherwise it has to wait until
483 // the blinking interval is over
484 if (d->cursor_visible_) {
489 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
491 update(0, 0, viewport()->width(), viewport()->height());
493 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
494 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
495 d->updateScrollbar();
496 d->lyx_view_->updateStatusBar();
498 if (lyxerr.debugging(Debug::WORKAREA))
499 d->buffer_view_->coordCache().dump();
503 d->updateCursorShape();
507 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
509 if (d->lyx_view_->isFullScreen() && d->lyx_view_->menuBar()->isVisible()
510 && lyxrc.full_screen_menubar) {
511 // FIXME HACK: we should not have to do this here. See related comment
512 // in GuiView::event() (QEvent::ShortcutOverride)
513 d->lyx_view_->menuBar()->hide();
516 // In order to avoid bad surprise in the middle of an operation,
517 // we better stop the blinking cursor...
518 // the cursor gets restarted in GuiView::restartCursor()
519 stopBlinkingCursor();
520 guiApp->processKeySym(key, mod);
524 void GuiWorkArea::Private::dispatch(FuncRequest const & cmd)
527 if (cmd.action() == LFUN_FILE_OPEN) {
529 lyx_view_->dispatch(cmd, dr);
533 bool const notJustMovingTheMouse =
534 cmd.action() != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
536 // In order to avoid bad surprise in the middle of an operation, we better stop
537 // the blinking cursor.
538 if (notJustMovingTheMouse)
539 p->stopBlinkingCursor();
541 buffer_view_->mouseEventDispatch(cmd);
543 // Skip these when selecting
544 // FIXME: let GuiView take care of those.
545 if (cmd.action() != LFUN_MOUSE_MOTION) {
546 completer_->updateVisibility(false, false);
547 lyx_view_->updateDialogs();
548 lyx_view_->updateStatusBar();
551 // GUI tweaks except with mouse motion with no button pressed.
552 if (notJustMovingTheMouse) {
553 // Slight hack: this is only called currently when we
554 // clicked somewhere, so we force through the display
555 // of the new status here.
556 // FIXME: let GuiView take care of those.
557 lyx_view_->clearMessage();
559 // Show the cursor immediately after any operation
560 p->startBlinkingCursor();
567 void GuiWorkArea::Private::resizeBufferView()
569 // WARNING: Please don't put any code that will trigger a repaint here!
570 // We are already inside a paint event.
571 p->stopBlinkingCursor();
572 // Warn our container (GuiView).
577 buffer_view_->cursorPosAndHeight(point, h);
578 bool const cursor_in_view = buffer_view_->cursorInView(point, h);
579 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
581 buffer_view_->scrollToCursor();
584 // Update scrollbars which might have changed due different
585 // BufferView dimension. This is especially important when the
586 // BufferView goes from zero-size to the real-size for the first time,
587 // as the scrollbar paramters are then set for the first time.
590 need_resize_ = false;
592 // Eventually, restart the cursor after the resize event.
593 // We might be resizing even if the focus is on another widget so we only
594 // restart the cursor if we have the focus.
596 QTimer::singleShot(50, p, SLOT(startBlinkingCursor()));
600 void GuiWorkArea::Private::showCursor()
607 buffer_view_->cursorPosAndHeight(p, h);
608 if (!buffer_view_->cursorInView(p, h))
612 bool l_shape = false;
613 Font const & realfont = buffer_view_->cursor().real_current_font;
614 BufferParams const & bp = buffer_view_->buffer().params();
615 bool const samelang = realfont.language() == bp.language;
616 bool const isrtl = realfont.isVisibleRightToLeft();
618 if (!samelang || isrtl != bp.language->rightToLeft())
621 // The ERT language hack needs fixing up
622 if (realfont.language() == latex_language)
625 // show cursor on screen
626 Cursor & cur = buffer_view_->cursor();
627 bool completable = cur.inset().showCompletionCursor()
628 && completer_->completionAvailable()
629 && !completer_->popupVisible()
630 && !completer_->inlineVisible();
631 cursor_visible_ = true;
632 cursor_->recomputeWidth();
634 //int cur_x = buffer_view_->getPos(cur).x_;
635 // We may have decided to slide the cursor row so that cursor
637 p.x_ -= buffer_view_->horizScrollOffset();
639 showCursor(p.x_, p.y_, h, l_shape, isrtl, completable);
643 void GuiWorkArea::Private::hideCursor()
645 if (!cursor_visible_)
648 cursor_visible_ = false;
653 void GuiWorkArea::toggleCursor()
655 if (d->cursor_visible_)
662 void GuiWorkArea::Private::updateScrollbar()
664 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
665 // WARNING: don't touch at the scrollbar value like this:
666 // verticalScrollBar()->setValue(scroll_.position);
667 // because this would cause a recursive signal/slot calling with
668 // GuiWorkArea::scrollTo
669 p->verticalScrollBar()->setRange(scroll_.min, scroll_.max);
670 p->verticalScrollBar()->setPageStep(scroll_.page_step);
671 p->verticalScrollBar()->setSingleStep(scroll_.single_step);
672 p->verticalScrollBar()->setSliderPosition(0);
676 void GuiWorkArea::scrollTo(int value)
678 stopBlinkingCursor();
679 d->buffer_view_->scrollDocView(value, true);
681 if (lyxrc.cursor_follows_scrollbar) {
682 d->buffer_view_->setCursorFromScrollbar();
683 // FIXME: let GuiView take care of those.
684 d->lyx_view_->updateLayoutList();
686 // Show the cursor immediately after any operation.
687 startBlinkingCursor();
690 QApplication::syncX();
695 bool GuiWorkArea::event(QEvent * e)
698 case QEvent::ToolTip: {
699 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
700 if (lyxrc.use_tooltip) {
701 QPoint pos = helpEvent->pos();
702 if (pos.x() < viewport()->width()) {
703 QString s = toqstr(d->buffer_view_->toolTip(pos.x(), pos.y()));
704 QToolTip::showText(helpEvent->globalPos(), s);
707 QToolTip::hideText();
709 // Don't forget to accept the event!
714 case QEvent::KeyPress: {
715 // We catch this event in order to catch the Tab or Shift+Tab key press
716 // which are otherwise reserved to focus switching between controls
718 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
719 if ((ke->key() == Qt::Key_Tab && ke->modifiers() == Qt::NoModifier)
720 || (ke->key() == Qt::Key_Backtab && (
721 ke->modifiers() == Qt::ShiftModifier
722 || ke->modifiers() == Qt::NoModifier))) {
726 return QAbstractScrollArea::event(e);
730 return QAbstractScrollArea::event(e);
736 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
739 if (e->reason() == QContextMenuEvent::Mouse)
740 // the menu name is set on mouse press
741 name = d->context_menu_name_;
743 QPoint pos = e->pos();
744 Cursor const & cur = d->buffer_view_->cursor();
745 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
746 // Do not access the context menu of math right in front of before
747 // the cursor. This does not work when the cursor is in text.
748 Inset * inset = cur.paragraph().getInset(cur.pos());
749 if (inset && inset->asInsetMath())
751 else if (cur.pos() > 0) {
752 Inset * inset = cur.paragraph().getInset(cur.pos() - 1);
757 name = d->buffer_view_->contextMenu(pos.x(), pos.y());
761 QAbstractScrollArea::contextMenuEvent(e);
764 // always show mnemonics when the keyboard is used to show the context menu
765 // FIXME: This should be fixed in Qt itself
766 bool const keyboard = (e->reason() == QContextMenuEvent::Keyboard);
767 QMenu * menu = guiApp->menus().menu(toqstr(name), *d->lyx_view_, keyboard);
769 QAbstractScrollArea::contextMenuEvent(e);
772 // Position the menu to the right.
773 // FIXME: menu position should be different for RTL text.
774 menu->exec(e->globalPos());
779 void GuiWorkArea::focusInEvent(QFocusEvent * e)
781 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
782 if (d->lyx_view_->currentWorkArea() != this) {
783 d->lyx_view_->setCurrentWorkArea(this);
784 d->lyx_view_->currentWorkArea()->bufferView().buffer().updateBuffer();
787 startBlinkingCursor();
788 QAbstractScrollArea::focusInEvent(e);
792 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
794 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
795 stopBlinkingCursor();
796 QAbstractScrollArea::focusOutEvent(e);
800 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
802 if (d->dc_event_.active && d->dc_event_ == *e) {
803 d->dc_event_.active = false;
804 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
805 q_button_state(e->button()), q_key_state(e->modifiers()));
811 #if (QT_VERSION < 0x050000) && !defined(__HAIKU__)
812 inputContext()->reset();
815 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
816 q_button_state(e->button()), q_key_state(e->modifiers()));
819 // Save the context menu on mouse press, because also the mouse
820 // cursor is set on mouse press. Afterwards, we can either release
821 // the mousebutton somewhere else, or the cursor might have moved
822 // due to the DEPM. We need to do this after the mouse has been
823 // set in dispatch(), because the selection state might change.
824 if (e->button() == Qt::RightButton)
825 d->context_menu_name_ = d->buffer_view_->contextMenu(e->x(), e->y());
831 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
833 if (d->synthetic_mouse_event_.timeout.running())
834 d->synthetic_mouse_event_.timeout.stop();
836 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
837 q_button_state(e->button()), q_key_state(e->modifiers()));
843 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
845 // we kill the triple click if we move
846 doubleClickTimeout();
847 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
848 q_motion_state(e->buttons()), q_key_state(e->modifiers()));
852 // If we're above or below the work area...
853 if ((e->y() <= 20 || e->y() >= viewport()->height() - 20)
854 && e->buttons() == mouse_button::button1) {
855 // Make sure only a synthetic event can cause a page scroll,
856 // so they come at a steady rate:
858 // _Force_ a scroll up:
859 cmd.set_y(e->y() - 21);
861 cmd.set_y(e->y() + 21);
862 // Store the event, to be handled when the timeout expires.
863 d->synthetic_mouse_event_.cmd = cmd;
865 if (d->synthetic_mouse_event_.timeout.running()) {
866 // Discard the event. Note that it _may_ be handled
867 // when the timeout expires if
868 // synthetic_mouse_event_.cmd has not been overwritten.
869 // Ie, when the timeout expires, we handle the
870 // most recent event but discard all others that
871 // occurred after the one used to start the timeout
872 // in the first place.
876 d->synthetic_mouse_event_.restart_timeout = true;
877 d->synthetic_mouse_event_.timeout.start();
878 // Fall through to handle this event...
880 } else if (d->synthetic_mouse_event_.timeout.running()) {
881 // Store the event, to be possibly handled when the timeout
883 // Once the timeout has expired, normal control is returned
884 // to mouseMoveEvent (restart_timeout = false).
885 // This results in a much smoother 'feel' when moving the
886 // mouse back into the work area.
887 d->synthetic_mouse_event_.cmd = cmd;
888 d->synthetic_mouse_event_.restart_timeout = false;
895 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
897 // Wheel rotation by one notch results in a delta() of 120 (see
898 // documentation of QWheelEvent)
899 double const delta = ev->delta() / 120.0;
901 switch (lyxrc.scroll_wheel_zoom) {
902 case LyXRC::SCROLL_WHEEL_ZOOM_CTRL:
903 zoom = ev->modifiers() & Qt::ControlModifier;
904 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::AltModifier));
906 case LyXRC::SCROLL_WHEEL_ZOOM_SHIFT:
907 zoom = ev->modifiers() & Qt::ShiftModifier;
908 zoom &= !(ev->modifiers() & (Qt::ControlModifier | Qt::AltModifier));
910 case LyXRC::SCROLL_WHEEL_ZOOM_ALT:
911 zoom = ev->modifiers() & Qt::AltModifier;
912 zoom &= !(ev->modifiers() & (Qt::ShiftModifier | Qt::ControlModifier));
914 case LyXRC::SCROLL_WHEEL_ZOOM_OFF:
918 docstring arg = convert<docstring>(int(5 * delta));
919 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
923 // Take into account the desktop wide settings.
924 int const lines = qApp->wheelScrollLines();
925 int const page_step = verticalScrollBar()->pageStep();
926 // Test if the wheel mouse is set to one screen at a time.
927 // This is according to
928 // https://doc.qt.io/qt-5/qapplication.html#wheelScrollLines-prop
930 min(lines * verticalScrollBar()->singleStep(), page_step);
932 // Take into account the rotation and the user preferences.
933 scroll_value = int(scroll_value * delta * lyxrc.mouse_wheel_speed);
934 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
935 << " delta = " << delta << " scroll_value = " << scroll_value
936 << " page_step = " << page_step);
938 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
944 void GuiWorkArea::generateSyntheticMouseEvent()
946 int const e_y = d->synthetic_mouse_event_.cmd.y();
947 int const wh = d->buffer_view_->workHeight();
948 bool const up = e_y < 0;
949 bool const down = e_y > wh;
951 // Set things off to generate the _next_ 'pseudo' event.
953 if (d->synthetic_mouse_event_.restart_timeout) {
954 // This is some magic formulae to determine the speed
955 // of scrolling related to the position of the mouse.
958 int dist = up ? -e_y : e_y - wh;
959 time = max(min(200, 250000 / (dist * dist)), 1) ;
962 step = 80000 / (time * time);
966 d->synthetic_mouse_event_.timeout.setTimeout(time);
967 d->synthetic_mouse_event_.timeout.start();
970 // Can we scroll further ?
971 int const value = verticalScrollBar()->value();
972 if (value == verticalScrollBar()->maximum()
973 || value == verticalScrollBar()->minimum()) {
974 d->synthetic_mouse_event_.timeout.stop();
979 if (step <= 2 * wh) {
980 d->buffer_view_->scroll(up ? -step : step);
981 d->buffer_view_->updateMetrics();
983 d->buffer_view_->scrollDocView(value + (up ? -step : step), false);
986 // In which paragraph do we have to set the cursor ?
987 Cursor & cur = d->buffer_view_->cursor();
988 // FIXME: we don't know howto handle math.
989 Text * text = cur.text();
992 TextMetrics const & tm = d->buffer_view_->textMetrics(text);
994 pair<pit_type, const ParagraphMetrics *> pp = up ? tm.first() : tm.last();
995 ParagraphMetrics const & pm = *pp.second;
996 pit_type const pit = pp.first;
998 if (pm.rows().empty())
1001 // Find the row at which we set the cursor.
1002 RowList::const_iterator rit = pm.rows().begin();
1003 RowList::const_iterator rlast = pm.rows().end();
1004 int yy = pm.position() - pm.ascent();
1005 for (--rlast; rit != rlast; ++rit) {
1006 int h = rit->height();
1007 if ((up && yy + h > 0)
1008 || (!up && yy + h > wh - defaultRowHeight()))
1013 // Find the position of the cursor
1015 int x = d->synthetic_mouse_event_.cmd.x();
1016 pos_type const pos = tm.getPosNearX(*rit, x, bound);
1021 cur.boundary(bound);
1023 d->buffer_view_->buffer().changed(false);
1028 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
1030 // Do not process here some keys if dialog_mode_ is set
1032 && (ev->modifiers() == Qt::NoModifier
1033 || ev->modifiers() == Qt::ShiftModifier)
1034 && (ev->key() == Qt::Key_Escape
1035 || ev->key() == Qt::Key_Enter
1036 || ev->key() == Qt::Key_Return)
1042 // intercept some keys if completion popup is visible
1043 if (d->completer_->popupVisible()) {
1044 switch (ev->key()) {
1046 case Qt::Key_Return:
1047 d->completer_->activate();
1053 // do nothing if there are other events
1054 // (the auto repeated events come too fast)
1055 // it looks like this is only needed on X11
1056 #if defined(Q_WS_X11) || defined(QPA_XCB)
1057 if (qApp->hasPendingEvents() && ev->isAutoRepeat()) {
1058 switch (ev->key()) {
1059 case Qt::Key_PageDown:
1060 case Qt::Key_PageUp:
1065 LYXERR(Debug::KEY, "system is busy: scroll key event ignored");
1072 KeyModifier m = q_key_state(ev->modifiers());
1075 if (m & ShiftModifier)
1077 if (m & ControlModifier)
1079 if (m & AltModifier)
1081 if (m & MetaModifier)
1084 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
1085 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key()
1086 << " keyState: " << str);
1089 setKeySymbol(&sym, ev);
1091 processKeySym(sym, q_key_state(ev->modifiers()));
1099 void GuiWorkArea::doubleClickTimeout()
1101 d->dc_event_.active = false;
1105 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
1107 d->dc_event_ = DoubleClick(ev);
1108 QTimer::singleShot(QApplication::doubleClickInterval(), this,
1109 SLOT(doubleClickTimeout()));
1110 FuncRequest cmd(LFUN_MOUSE_DOUBLE, ev->x(), ev->y(),
1111 q_button_state(ev->button()), q_key_state(ev->modifiers()));
1117 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
1119 QAbstractScrollArea::resizeEvent(ev);
1120 d->need_resize_ = true;
1125 void GuiWorkArea::Private::update(int x, int y, int w, int h)
1127 p->viewport()->update(x, y, w, h);
1131 void GuiWorkArea::paintEvent(QPaintEvent * ev)
1133 QRectF const rc = ev->rect();
1134 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
1135 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
1137 if (d->needResize()) {
1139 d->resizeBufferView();
1140 if (d->cursor_visible_) {
1146 QPainter pain(viewport());
1147 double const pr = pixelRatio();
1148 QRectF const rcs = QRectF(rc.x() * pr, rc.y() * pr, rc.width() * pr, rc.height() * pr);
1150 if (lyxrc.use_qimage) {
1151 QImage const & image = static_cast<QImage const &>(*d->screen_);
1152 pain.drawImage(rc, image, rcs);
1154 QPixmap const & pixmap = static_cast<QPixmap const &>(*d->screen_);
1155 pain.drawPixmap(rc, pixmap, rcs);
1157 d->cursor_->draw(pain);
1162 void GuiWorkArea::Private::updateScreen()
1164 GuiPainter pain(screen_, p->pixelRatio());
1165 buffer_view_->draw(pain);
1169 void GuiWorkArea::Private::showCursor(int x, int y, int h,
1170 bool l_shape, bool rtl, bool completable)
1172 if (schedule_redraw_) {
1173 // This happens when a graphic conversion is finished. As we don't know
1174 // the size of the new graphics, it's better the update everything.
1175 // We can't use redraw() here because this would trigger a infinite
1176 // recursive loop with showCursor().
1177 buffer_view_->resize(p->viewport()->width(), p->viewport()->height());
1180 p->viewport()->update(QRect(0, 0, p->viewport()->width(), p->viewport()->height()));
1181 schedule_redraw_ = false;
1182 // Show the cursor immediately after the update.
1188 cursor_->update(x, y, h, l_shape, rtl, completable);
1190 p->viewport()->update(cursor_->rect());
1194 void GuiWorkArea::Private::removeCursor()
1197 //if (!qApp->focusWidget())
1198 p->viewport()->update(cursor_->rect());
1202 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1204 QString const & commit_string = e->commitString();
1205 docstring const & preedit_string
1206 = qstring_to_ucs4(e->preeditString());
1208 if (!commit_string.isEmpty()) {
1210 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1211 << " commitString: " << e->commitString());
1215 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
1216 for (int i = 0; i != commit_string.size(); ++i) {
1217 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
1222 // Hide the cursor during the kana-kanji transformation.
1223 if (preedit_string.empty())
1224 startBlinkingCursor();
1226 stopBlinkingCursor();
1228 // last_width : for checking if last preedit string was/wasn't empty.
1230 // We could have more than one work area, right?
1231 static bool last_width = false;
1232 if (!last_width && preedit_string.empty()) {
1233 // if last_width is last length of preedit string.
1238 GuiPainter pain(d->screen_, pixelRatio());
1239 d->buffer_view_->updateMetrics();
1240 d->buffer_view_->draw(pain);
1241 FontInfo font = d->buffer_view_->cursor().getFont().fontInfo();
1242 FontMetrics const & fm = theFontMetrics(font);
1243 int height = fm.maxHeight();
1244 int cur_x = d->cursor_->rect().left();
1245 int cur_y = d->cursor_->rect().bottom();
1247 // redraw area of preedit string.
1248 update(0, cur_y - height, viewport()->width(),
1249 (height + 1) * d->preedit_lines_);
1251 if (preedit_string.empty()) {
1253 d->preedit_lines_ = 1;
1259 // att : stores an IM attribute.
1260 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
1262 // get attributes of input method cursor.
1263 // cursor_pos : cursor position in preedit string.
1264 size_t cursor_pos = 0;
1265 bool cursor_is_visible = false;
1266 for (int i = 0; i != att.size(); ++i) {
1267 if (att.at(i).type == QInputMethodEvent::Cursor) {
1268 cursor_pos = att.at(i).start;
1269 cursor_is_visible = att.at(i).length != 0;
1274 size_t preedit_length = preedit_string.length();
1276 // get position of selection in input method.
1277 // FIXME: isn't there a way to do this simplier?
1278 // rStart : cursor position in selected string in IM.
1280 // rLength : selected string length in IM.
1282 if (cursor_pos < preedit_length) {
1283 for (int i = 0; i != att.size(); ++i) {
1284 if (att.at(i).type == QInputMethodEvent::TextFormat) {
1285 if (att.at(i).start <= int(cursor_pos)
1286 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
1287 rStart = att.at(i).start;
1288 rLength = att.at(i).length;
1289 if (!cursor_is_visible)
1290 cursor_pos += rLength;
1297 rStart = cursor_pos;
1301 int const right_margin = d->buffer_view_->rightMargin();
1302 Painter::preedit_style ps;
1303 // Most often there would be only one line:
1304 d->preedit_lines_ = 1;
1305 for (size_t pos = 0; pos != preedit_length; ++pos) {
1306 char_type const typed_char = preedit_string[pos];
1307 // reset preedit string style
1308 ps = Painter::preedit_default;
1310 // if we reached the right extremity of the screen, go to next line.
1311 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
1312 cur_x = right_margin;
1313 cur_y += height + 1;
1314 ++d->preedit_lines_;
1316 // preedit strings are displayed with dashed underline
1317 // and partial strings are displayed white on black indicating
1318 // that we are in selecting mode in the input method.
1319 // FIXME: rLength == preedit_length is not a changing condition
1320 // FIXME: should be put out of the loop.
1322 && pos < rStart + rLength
1323 && !(cursor_pos < rLength && rLength == preedit_length))
1324 ps = Painter::preedit_selecting;
1326 if (pos == cursor_pos
1327 && (cursor_pos < rLength && rLength == preedit_length))
1328 ps = Painter::preedit_cursor;
1330 // draw one character and update cur_x.
1331 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1334 // update the preedit string screen area.
1335 update(0, cur_y - d->preedit_lines_*height, viewport()->width(),
1336 (height + 1) * d->preedit_lines_);
1338 // Don't forget to accept the event!
1343 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1345 QRect cur_r(0, 0, 0, 0);
1347 // this is the CJK-specific composition window position and
1348 // the context menu position when the menu key is pressed.
1349 case Qt::ImMicroFocus:
1350 cur_r = d->cursor_->rect();
1351 if (d->preedit_lines_ != 1)
1353 cur_r.moveBottom(cur_r.bottom()
1354 + cur_r.height() * (d->preedit_lines_ - 1));
1355 // return lower right of cursor in LyX.
1358 return QWidget::inputMethodQuery(query);
1363 void GuiWorkArea::updateWindowTitle()
1365 docstring maximize_title;
1366 docstring minimize_title;
1368 Buffer const & buf = d->buffer_view_->buffer();
1369 FileName const file_name = buf.fileName();
1370 if (!file_name.empty()) {
1371 maximize_title = file_name.displayName(130);
1372 minimize_title = from_utf8(file_name.onlyFileName());
1373 if (buf.lyxvc().inUse()) {
1374 if (buf.lyxvc().locking())
1375 maximize_title += _(" (version control, locking)");
1377 maximize_title += _(" (version control)");
1379 if (!buf.isClean()) {
1380 maximize_title += _(" (changed)");
1381 minimize_title += char_type('*');
1383 if (buf.isReadonly())
1384 maximize_title += _(" (read only)");
1387 QString const new_title = toqstr(maximize_title);
1388 if (new_title != windowTitle()) {
1389 QWidget::setWindowTitle(new_title);
1390 QWidget::setWindowIconText(toqstr(minimize_title));
1396 bool GuiWorkArea::isFullScreen() const
1398 return d->lyx_view_ && d->lyx_view_->isFullScreen();
1402 void GuiWorkArea::scheduleRedraw()
1404 d->schedule_redraw_ = true;
1408 bool GuiWorkArea::inDialogMode() const
1410 return d->dialog_mode_;
1414 void GuiWorkArea::setDialogMode(bool mode)
1416 d->dialog_mode_ = mode;
1420 GuiCompleter & GuiWorkArea::completer()
1422 return *d->completer_;
1425 GuiView const & GuiWorkArea::view() const
1427 return *d->lyx_view_;
1431 GuiView & GuiWorkArea::view()
1433 return *d->lyx_view_;
1436 ////////////////////////////////////////////////////////////////////
1440 ////////////////////////////////////////////////////////////////////
1443 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1445 support::TempFile tempfile("embedded.internal");
1446 tempfile.setAutoRemove(false);
1447 buffer_ = theBufferList().newInternalBuffer(tempfile.name().absFileName());
1448 buffer_->setUnnamed(true);
1449 buffer_->setFullyLoaded(true);
1450 setBuffer(*buffer_);
1451 setDialogMode(true);
1455 EmbeddedWorkArea::~EmbeddedWorkArea()
1457 // No need to destroy buffer and bufferview here, because it is done
1458 // in theBufferList() destruction loop at application exit
1462 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1465 GuiWorkArea::closeEvent(ev);
1469 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1472 GuiWorkArea::hideEvent(ev);
1476 QSize EmbeddedWorkArea::sizeHint () const
1479 // GuiWorkArea sets the size to the screen's viewport
1480 // by returning a value this gets overridden
1481 // EmbeddedWorkArea is now sized to fit in the layout
1482 // of the parent, and has a minimum size set in GuiWorkArea
1483 // which is what we return here
1484 return QSize(100, 70);
1488 void EmbeddedWorkArea::disable()
1490 stopBlinkingCursor();
1491 if (view().currentWorkArea() != this)
1493 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1494 // tolerates it and shows the background logo), what happens if
1495 // an EmbeddedWorkArea is closed after closing all document WAs
1496 view().setCurrentWorkArea(view().currentMainWorkArea());
1499 ////////////////////////////////////////////////////////////////////
1503 ////////////////////////////////////////////////////////////////////
1506 class NoTabFrameMacStyle : public QProxyStyle {
1509 QRect subElementRect(SubElement element, const QStyleOption * option,
1510 const QWidget * widget = 0) const
1512 QRect rect = QProxyStyle::subElementRect(element, option, widget);
1513 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1515 // The Qt Mac style puts the contents into a 3 pixel wide box
1516 // which looks very ugly and not like other Mac applications.
1517 // Hence we remove this here, and moreover the 16 pixel round
1518 // frame above if the tab bar is hidden.
1519 if (element == QStyle::SE_TabWidgetTabContents) {
1520 rect.adjust(- rect.left(), 0, rect.left(), 0);
1529 NoTabFrameMacStyle noTabFrameMacStyle;
1533 TabWorkArea::TabWorkArea(QWidget * parent)
1534 : QTabWidget(parent), clicked_tab_(-1)
1537 setStyle(&noTabFrameMacStyle);
1540 QPalette pal = palette();
1541 pal.setColor(QPalette::Active, QPalette::Button,
1542 pal.color(QPalette::Active, QPalette::Window));
1543 pal.setColor(QPalette::Disabled, QPalette::Button,
1544 pal.color(QPalette::Disabled, QPalette::Window));
1545 pal.setColor(QPalette::Inactive, QPalette::Button,
1546 pal.color(QPalette::Inactive, QPalette::Window));
1548 QObject::connect(this, SIGNAL(currentChanged(int)),
1549 this, SLOT(on_currentTabChanged(int)));
1551 closeBufferButton = new QToolButton(this);
1552 closeBufferButton->setPalette(pal);
1553 // FIXME: rename the icon to closebuffer.png
1554 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "svgz,png")));
1555 closeBufferButton->setText("Close File");
1556 closeBufferButton->setAutoRaise(true);
1557 closeBufferButton->setCursor(Qt::ArrowCursor);
1558 closeBufferButton->setToolTip(qt_("Close File"));
1559 closeBufferButton->setEnabled(true);
1560 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1561 this, SLOT(closeCurrentBuffer()));
1562 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1564 // setup drag'n'drop
1565 QTabBar* tb = new DragTabBar;
1566 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1567 this, SLOT(moveTab(int, int)));
1568 tb->setElideMode(Qt::ElideNone);
1571 // make us responsible for the context menu of the tabbar
1572 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1573 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1574 this, SLOT(showContextMenu(const QPoint &)));
1575 connect(tb, SIGNAL(tabCloseRequested(int)),
1576 this, SLOT(closeTab(int)));
1578 setUsesScrollButtons(true);
1582 void TabWorkArea::paintEvent(QPaintEvent * event)
1584 if (tabBar()->isVisible()) {
1585 QTabWidget::paintEvent(event);
1587 // Prevent the selected tab to influence the
1588 // painting of the frame of the tab widget.
1589 // This is needed for gtk style in Qt.
1590 QStylePainter p(this);
1591 #if QT_VERSION < 0x050000
1592 QStyleOptionTabWidgetFrameV2 opt;
1594 QStyleOptionTabWidgetFrame opt;
1596 initStyleOption(&opt);
1597 opt.rect = style()->subElementRect(QStyle::SE_TabWidgetTabPane,
1599 opt.selectedTabRect = QRect();
1600 p.drawPrimitive(QStyle::PE_FrameTabWidget, opt);
1605 void TabWorkArea::mouseDoubleClickEvent(QMouseEvent * event)
1607 if (event->button() != Qt::LeftButton)
1610 // return early if double click on existing tabs
1611 for (int i = 0; i < count(); ++i)
1612 if (tabBar()->tabRect(i).contains(event->pos()))
1615 dispatch(FuncRequest(LFUN_BUFFER_NEW));
1619 void TabWorkArea::setFullScreen(bool full_screen)
1621 for (int i = 0; i != count(); ++i) {
1622 if (GuiWorkArea * wa = workArea(i))
1623 wa->setFullScreen(full_screen);
1626 if (lyxrc.full_screen_tabbar)
1627 showBar(!full_screen && count() > 1);
1629 showBar(count() > 1);
1633 void TabWorkArea::showBar(bool show)
1635 tabBar()->setEnabled(show);
1636 tabBar()->setVisible(show);
1637 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1638 setTabsClosable(!lyxrc.single_close_tab_button);
1642 GuiWorkArea * TabWorkArea::currentWorkArea()
1647 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
1653 GuiWorkArea * TabWorkArea::workArea(int index)
1655 return dynamic_cast<GuiWorkArea *>(widget(index));
1659 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
1661 // FIXME: this method doesn't work if we have more than work area
1662 // showing the same buffer.
1663 for (int i = 0; i != count(); ++i) {
1664 GuiWorkArea * wa = workArea(i);
1665 LASSERT(wa, return 0);
1666 if (&wa->bufferView().buffer() == &buffer)
1673 void TabWorkArea::closeAll()
1676 GuiWorkArea * wa = workArea(0);
1677 LASSERT(wa, return);
1684 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1686 LASSERT(work_area, return false);
1687 int index = indexOf(work_area);
1691 if (index == currentIndex())
1692 // Make sure the work area is up to date.
1693 on_currentTabChanged(index);
1695 // Switch to the work area.
1696 setCurrentIndex(index);
1697 work_area->setFocus();
1703 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1705 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1706 wa->setUpdatesEnabled(false);
1707 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1708 // when hiding it again below).
1709 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1710 showBar(count() > 0);
1711 addTab(wa, wa->windowTitle());
1712 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1713 this, SLOT(updateTabTexts()));
1714 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1715 setFullScreen(true);
1717 // Hide tabbar if there's only one tab.
1718 showBar(count() > 1);
1726 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1728 LASSERT(work_area, return false);
1729 int index = indexOf(work_area);
1733 work_area->setUpdatesEnabled(false);
1738 // make sure the next work area is enabled.
1739 currentWidget()->setUpdatesEnabled(true);
1740 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1741 setFullScreen(true);
1743 // Show tabbar only if there's more than one tab.
1744 showBar(count() > 1);
1746 lastWorkAreaRemoved();
1754 void TabWorkArea::on_currentTabChanged(int i)
1756 // returns e.g. on application destruction
1759 GuiWorkArea * wa = workArea(i);
1760 LASSERT(wa, return);
1761 wa->setUpdatesEnabled(true);
1765 currentWorkAreaChanged(wa);
1767 LYXERR(Debug::GUI, "currentTabChanged " << i
1768 << " File: " << wa->bufferView().buffer().absFileName());
1772 void TabWorkArea::closeCurrentBuffer()
1775 if (clicked_tab_ == -1)
1776 wa = currentWorkArea();
1778 wa = workArea(clicked_tab_);
1779 LASSERT(wa, return);
1781 wa->view().closeWorkArea(wa);
1785 void TabWorkArea::hideCurrentTab()
1788 if (clicked_tab_ == -1)
1789 wa = currentWorkArea();
1791 wa = workArea(clicked_tab_);
1792 LASSERT(wa, return);
1794 wa->view().hideWorkArea(wa);
1798 void TabWorkArea::closeTab(int index)
1800 on_currentTabChanged(index);
1803 wa = currentWorkArea();
1805 wa = workArea(index);
1806 LASSERT(wa, return);
1808 wa->view().closeWorkArea(wa);
1815 /// make vector happy
1816 // coverity[UNINIT_CTOR]
1819 DisplayPath(int tab, FileName const & filename)
1822 filename_ = (filename.extension() == "lyx") ?
1823 toqstr(filename.onlyFileNameWithoutExt())
1824 : toqstr(filename.onlyFileName());
1825 postfix_ = toqstr(filename.absoluteFilePath()).
1826 split("/", QString::SkipEmptyParts);
1827 postfix_.pop_back();
1828 abs_ = toqstr(filename.absoluteFilePath());
1829 dottedPrefix_ = false;
1832 /// Absolute path for debugging.
1837 /// Add the first segment from the postfix or three dots to the prefix.
1838 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1839 /// when really needed.
1840 void shiftPathSegment(bool dotted)
1842 if (postfix_.count() <= 0)
1846 if (dottedPrefix_ && !prefix_.isEmpty())
1847 prefix_ += ellipsisSlash_;
1848 prefix_ += postfix_.front() + "/";
1850 dottedPrefix_ = dotted && !prefix_.isEmpty();
1851 postfix_.pop_front();
1854 QString displayString() const
1856 if (prefix_.isEmpty())
1859 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1860 return prefix_ + (dots ? ellipsisSlash_ : "") + filename_;
1863 QString forecastPathString() const
1865 if (postfix_.count() == 0)
1866 return displayString();
1869 + (dottedPrefix_ ? ellipsisSlash_ : "")
1870 + postfix_.front() + "/";
1873 bool final() const { return postfix_.empty(); }
1875 int tab() const { return tab_; }
1879 static QString const ellipsisSlash_;
1883 QStringList postfix_;
1895 QString const DisplayPath::ellipsisSlash_ = QString(QChar(0x2026)) + "/";
1899 bool operator<(DisplayPath const & a, DisplayPath const & b)
1901 return a.displayString() < b.displayString();
1905 bool operator==(DisplayPath const & a, DisplayPath const & b)
1907 return a.displayString() == b.displayString();
1911 void TabWorkArea::updateTabTexts()
1916 std::list<DisplayPath> paths;
1917 typedef std::list<DisplayPath>::iterator It;
1919 // collect full names first: path into postfix, empty prefix and
1920 // filename without extension
1921 for (size_t i = 0; i < n; ++i) {
1922 GuiWorkArea * i_wa = workArea(i);
1923 FileName const fn = i_wa->bufferView().buffer().fileName();
1924 paths.push_back(DisplayPath(i, fn));
1927 // go through path segments and see if it helps to make the path more unique
1928 bool somethingChanged = true;
1929 bool allFinal = false;
1930 while (somethingChanged && !allFinal) {
1931 // adding path segments changes order
1934 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1935 somethingChanged = false;
1938 // find segments which are not unique (i.e. non-atomic)
1939 It it = paths.begin();
1941 QString segString = it->displayString();
1942 for (; it != paths.end(); ++it) {
1943 // look to the next item
1948 allFinal = allFinal && it->final();
1950 LYXERR(Debug::GUI, "it = " << it->abs()
1951 << " => " << it->displayString());
1953 // still the same segment?
1955 if ((next != paths.end()
1956 && (nextString = next->displayString()) == segString))
1958 LYXERR(Debug::GUI, "segment ended");
1960 // only a trivial one with one element?
1961 if (it == segStart) {
1962 // start new segment
1964 segString = nextString;
1968 // we found a non-atomic segment segStart <= sit <= it < next.
1969 // Shift path segments and hope for the best
1970 // that it makes the path more unique.
1971 somethingChanged = true;
1973 // this is ok for the reason mentioned in the previous comment.
1974 // coverity[INVALIDATE_ITERATOR]
1975 QString dspString = sit->forecastPathString();
1976 LYXERR(Debug::GUI, "first forecast found for "
1977 << sit->abs() << " => " << dspString);
1979 bool moreUnique = false;
1980 for (; sit != next; ++sit) {
1981 if (sit->forecastPathString() != dspString) {
1982 LYXERR(Debug::GUI, "different forecast found for "
1983 << sit->abs() << " => " << sit->forecastPathString());
1987 LYXERR(Debug::GUI, "same forecast found for "
1988 << sit->abs() << " => " << dspString);
1991 // if the path segment helped, add it. Otherwise add dots
1992 bool dots = !moreUnique;
1993 LYXERR(Debug::GUI, "using dots = " << dots);
1994 for (sit = segStart; sit != next; ++sit) {
1995 sit->shiftPathSegment(dots);
1996 LYXERR(Debug::GUI, "shifting "
1997 << sit->abs() << " => " << sit->displayString());
2000 // start new segment
2002 segString = nextString;
2006 // set new tab titles
2007 for (It it = paths.begin(); it != paths.end(); ++it) {
2008 int const tab_index = it->tab();
2009 Buffer const & buf = workArea(tab_index)->bufferView().buffer();
2010 QString tab_text = it->displayString().replace("&", "&&");
2011 if (!buf.fileName().empty() && !buf.isClean())
2013 QString tab_tooltip = it->abs();
2014 if (buf.isReadonly()) {
2015 setTabIcon(tab_index, QIcon(getPixmap("images/", "emblem-readonly", "svgz,png")));
2016 tab_tooltip = qt_("%1 (read only)").arg(it->abs());
2018 setTabIcon(tab_index, QIcon());
2019 setTabText(tab_index, tab_text);
2020 setTabToolTip(tab_index, tab_tooltip);
2025 void TabWorkArea::showContextMenu(const QPoint & pos)
2028 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
2029 if (clicked_tab_ == -1)
2034 popup.addAction(QIcon(getPixmap("images/", "hidetab", "svgz,png")),
2035 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
2036 popup.addAction(QIcon(getPixmap("images/", "closetab", "svgz,png")),
2037 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
2038 popup.exec(tabBar()->mapToGlobal(pos));
2044 void TabWorkArea::moveTab(int fromIndex, int toIndex)
2046 QWidget * w = widget(fromIndex);
2047 QIcon icon = tabIcon(fromIndex);
2048 QString text = tabText(fromIndex);
2050 setCurrentIndex(fromIndex);
2051 removeTab(fromIndex);
2052 insertTab(toIndex, w, icon, text);
2053 setCurrentIndex(toIndex);
2057 DragTabBar::DragTabBar(QWidget* parent)
2060 setAcceptDrops(true);
2061 setTabsClosable(!lyxrc.single_close_tab_button);
2065 void DragTabBar::mousePressEvent(QMouseEvent * event)
2067 if (event->button() == Qt::LeftButton)
2068 dragStartPos_ = event->pos();
2069 QTabBar::mousePressEvent(event);
2073 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
2075 // If the left button isn't pressed anymore then return
2076 if (!(event->buttons() & Qt::LeftButton))
2079 // If the distance is too small then return
2080 if ((event->pos() - dragStartPos_).manhattanLength()
2081 < QApplication::startDragDistance())
2084 // did we hit something after all?
2085 int tab = tabAt(dragStartPos_);
2089 // simulate button release to remove highlight from button
2090 int i = currentIndex();
2091 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
2092 event->button(), event->buttons(), 0);
2093 QTabBar::mouseReleaseEvent(&me);
2097 QDrag * drag = new QDrag(this);
2098 QMimeData * mimeData = new QMimeData;
2099 // a crude way to distinguish tab-reodering drops from other ones
2100 mimeData->setData("action", "tab-reordering") ;
2101 drag->setMimeData(mimeData);
2103 // get tab pixmap as cursor
2104 QRect r = tabRect(tab);
2105 QPixmap pixmap(r.size());
2106 render(&pixmap, - r.topLeft());
2107 drag->setPixmap(pixmap);
2112 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
2114 // Only accept if it's an tab-reordering request
2115 QMimeData const * m = event->mimeData();
2116 QStringList formats = m->formats();
2117 if (formats.contains("action")
2118 && m->data("action") == "tab-reordering")
2119 event->acceptProposedAction();
2123 void DragTabBar::dropEvent(QDropEvent * event)
2125 int fromIndex = tabAt(dragStartPos_);
2126 int toIndex = tabAt(event->pos());
2128 // Tell interested objects that
2129 if (fromIndex != toIndex)
2130 tabMoveRequested(fromIndex, toIndex);
2131 event->acceptProposedAction();
2135 } // namespace frontend
2138 #include "moc_GuiWorkArea.cpp"