2 * \file GuiWorkArea.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
7 * \author Abdelrazak Younes
9 * Full author contact details are available in file CREDITS.
14 #include "GuiWorkArea.h"
16 #include "ColorCache.h"
17 #include "FontLoader.h"
21 #include "BufferList.h"
22 #include "BufferParams.h"
23 #include "BufferView.h"
24 #include "CoordCache.h"
27 #include "FuncRequest.h"
28 #include "GuiApplication.h"
29 #include "GuiCompleter.h"
30 #include "GuiKeySymbol.h"
31 #include "GuiPainter.h"
33 #include "KeySymbol.h"
38 #include "MetricsInfo.h"
39 #include "qt_helpers.h"
43 #include "graphics/GraphicsImage.h"
44 #include "graphics/GraphicsLoader.h"
46 #include "support/convert.h"
47 #include "support/debug.h"
48 #include "support/gettext.h"
49 #include "support/FileName.h"
51 #include "frontends/Application.h"
52 #include "frontends/FontMetrics.h"
53 #include "frontends/WorkAreaManager.h"
55 #include <QContextMenuEvent>
56 #include <QInputContext>
61 #include <QMainWindow>
65 #include <QPixmapCache>
68 #include <QToolButton>
72 #include <boost/bind.hpp>
78 extern "C" int XEventsQueued(Display *display, int mode);
82 int const CursorWidth = 2;
84 int const CursorWidth = 1;
86 int const TabIndicatorWidth = 3;
92 using namespace lyx::support;
97 /// return the LyX mouse button state from Qt's
98 static mouse_button::state q_button_state(Qt::MouseButton button)
100 mouse_button::state b = mouse_button::none;
103 b = mouse_button::button1;
106 b = mouse_button::button2;
108 case Qt::RightButton:
109 b = mouse_button::button3;
118 /// return the LyX mouse button state from Qt's
119 mouse_button::state q_motion_state(Qt::MouseButtons state)
121 mouse_button::state b = mouse_button::none;
122 if (state & Qt::LeftButton)
123 b |= mouse_button::button1;
124 if (state & Qt::MidButton)
125 b |= mouse_button::button2;
126 if (state & Qt::RightButton)
127 b |= mouse_button::button3;
138 void draw(QPainter & painter)
140 if (!show_ || !rect_.isValid())
144 int l = x_ - rect_.left();
145 int r = rect_.right() - x_;
146 int bot = rect_.bottom();
148 // draw vertica linel
149 painter.fillRect(x_, y, CursorWidth, rect_.height(), color_);
151 // draw RTL/LTR indication
152 painter.setPen(color_);
155 painter.drawLine(x_, bot, x_ - l, bot);
157 painter.drawLine(x_, bot, x_ + CursorWidth + r, bot);
160 // draw completion triangle
162 int m = y + rect_.height() / 2;
163 int d = TabIndicatorWidth - 1;
165 painter.drawLine(x_ - 1, m - d, x_ - 1 - d, m);
166 painter.drawLine(x_ - 1, m + d, x_ - 1 - d, m);
168 painter.drawLine(x_ + CursorWidth, m - d, x_ + CursorWidth + d, m);
169 painter.drawLine(x_ + CursorWidth, m + d, x_ + CursorWidth + d, m);
174 void update(int x, int y, int h, bool l_shape,
175 bool rtl, bool completable)
177 color_ = guiApp->colorCache().get(Color_cursor);
180 completable_ = completable;
183 // extension to left and right
187 // RTL/LTR indication
195 // completion triangle
198 l = max(l, TabIndicatorWidth);
200 r = max(r, TabIndicatorWidth);
203 // compute overall rectangle
204 rect_ = QRect(x - l, y, CursorWidth + r + l, h);
207 void show(bool set_show = true) { show_ = set_show; }
208 void hide() { show_ = false; }
210 QRect const & rect() { return rect_; }
213 /// cursor is in RTL or LTR text
215 /// indication for RTL or LTR
217 /// triangle to show that a completion is available
223 /// rectangle, possibly with l_shape and completion triangle
225 /// x position (were the vertical line is drawn)
230 // This is a 'heartbeat' generating synthetic mouse move events when the
231 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
232 SyntheticMouseEvent::SyntheticMouseEvent()
233 : timeout(200), restart_timeout(true),
234 x_old(-1), y_old(-1), min_scrollbar_old(-1), max_scrollbar_old(-1)
238 GuiWorkArea::GuiWorkArea(QWidget *)
239 : buffer_view_(0), lyx_view_(0),
240 cursor_visible_(false),
241 need_resize_(false), schedule_redraw_(false),
242 preedit_lines_(1), completer_(new GuiCompleter(this, this)),
243 context_target_pos_()
248 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & gv)
249 : buffer_view_(0), read_only_(buffer.isReadonly()), lyx_view_(0),
250 cursor_visible_(false),
251 need_resize_(false), schedule_redraw_(false),
252 preedit_lines_(1), completer_(new GuiCompleter(this, this)),
253 context_target_pos_()
261 void GuiWorkArea::init()
264 connect(&cursor_timeout_, SIGNAL(timeout()),
265 this, SLOT(toggleCursor()));
267 int const time = QApplication::cursorFlashTime() / 2;
269 cursor_timeout_.setInterval(time);
270 cursor_timeout_.start();
272 // let's initialize this just to be safe
273 cursor_timeout_.setInterval(500);
276 screen_ = QPixmap(viewport()->width(), viewport()->height());
277 // With Qt4.5 a mouse event will happen before the first paint event
278 // so make sure that the buffer view has an up to date metrics.
279 buffer_view_->resize(viewport()->width(), viewport()->height());
280 cursor_ = new frontend::CursorWidget();
283 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
284 setAcceptDrops(true);
285 setMouseTracking(true);
286 setMinimumSize(100, 70);
287 setFrameStyle(QFrame::NoFrame);
290 viewport()->setAutoFillBackground(false);
291 // We don't need double-buffering nor SystemBackground on
292 // the viewport because we have our own backing pixmap.
293 viewport()->setAttribute(Qt::WA_NoSystemBackground);
295 setFocusPolicy(Qt::StrongFocus);
297 viewport()->setCursor(Qt::IBeamCursor);
299 synthetic_mouse_event_.timeout.timeout.connect(
300 boost::bind(&GuiWorkArea::generateSyntheticMouseEvent,
303 // Initialize the vertical Scroll Bar
304 QObject::connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
305 this, SLOT(scrollTo(int)));
307 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
308 << " viewport height: " << viewport()->height());
310 // Enables input methods for asian languages.
311 // Must be set when creating custom text editing widgets.
312 setAttribute(Qt::WA_InputMethodEnabled, true);
314 dialog_mode_ = false;
318 GuiWorkArea::~GuiWorkArea()
320 buffer_view_->buffer().workAreaManager().remove(this);
323 // Completer has a QObject parent and is thus automatically destroyed.
325 // delete completer_;
329 void GuiWorkArea::setGuiView(GuiView & gv)
335 void GuiWorkArea::setBuffer(Buffer & buffer)
338 buffer_view_ = new BufferView(buffer);
339 buffer.workAreaManager().add(this);
341 // HACK: Prevents an additional redraw when the scrollbar pops up
342 // which regularily happens on documents with more than one page.
343 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
344 // Since we have no geometry information yet, we assume that
345 // a document needs a scrollbar if there is more then four
346 // paragraph in the outermost text.
347 if (buffer.text().paragraphs().size() > 4)
348 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
349 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
353 void GuiWorkArea::fixVerticalScrollBar()
356 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
360 void GuiWorkArea::close()
362 lyx_view_->removeWorkArea(this);
366 void GuiWorkArea::setFullScreen(bool full_screen)
368 buffer_view_->setFullScreen(full_screen);
369 setFrameStyle(QFrame::NoFrame);
371 setFrameStyle(QFrame::NoFrame);
372 if (lyxrc.full_screen_scrollbar)
373 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
375 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
379 BufferView & GuiWorkArea::bufferView()
381 return *buffer_view_;
385 BufferView const & GuiWorkArea::bufferView() const
387 return *buffer_view_;
391 void GuiWorkArea::stopBlinkingCursor()
393 cursor_timeout_.stop();
398 void GuiWorkArea::startBlinkingCursor()
401 //we're not supposed to cache this value.
402 int const time = QApplication::cursorFlashTime() / 2;
405 cursor_timeout_.setInterval(time);
406 cursor_timeout_.start();
410 void GuiWorkArea::redraw(bool update_metrics)
413 // No need to redraw in this case.
416 // No need to do anything if this is the current view. The BufferView
417 // metrics are already up to date.
418 if (update_metrics || lyx_view_ != guiApp->currentView()
419 || lyx_view_->currentWorkArea() != this) {
420 // FIXME: it would be nice to optimize for the off-screen case.
421 buffer_view_->updateMetrics();
422 buffer_view_->cursor().fixIfBroken();
425 // update cursor position, because otherwise it has to wait until
426 // the blinking interval is over
427 if (cursor_visible_) {
432 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
434 update(0, 0, viewport()->width(), viewport()->height());
436 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
437 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
439 lyx_view_->updateStatusBar();
441 if (lyxerr.debugging(Debug::WORKAREA))
442 buffer_view_->coordCache().dump();
444 setReadOnly(buffer_view_->buffer().isReadonly());
448 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
450 if (lyx_view_->isFullScreen() && lyx_view_->menuBar()->isVisible()
451 && lyxrc.full_screen_menubar) {
452 // FIXME HACK: we should not have to do this here. See related comment
453 // in GuiView::event() (QEvent::ShortcutOverride)
454 lyx_view_->menuBar()->hide();
457 // In order to avoid bad surprise in the middle of an operation,
458 // we better stop the blinking cursor...
459 // the cursor gets restarted in GuiView::restartCursor()
460 stopBlinkingCursor();
461 guiApp->processKeySym(key, mod);
465 void GuiWorkArea::dispatch(FuncRequest const & cmd0, KeyModifier mod)
468 if (cmd0.action == LFUN_FILE_OPEN) {
469 lyx_view_->dispatch(cmd0);
475 if (cmd0.action == LFUN_MOUSE_PRESS) {
476 if (mod == ShiftModifier)
477 cmd = FuncRequest(cmd0, "region-select");
478 else if (mod == ControlModifier)
479 cmd = FuncRequest(cmd0, "paragraph-select");
486 bool const notJustMovingTheMouse =
487 cmd.action != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
489 // In order to avoid bad surprise in the middle of an operation, we better stop
490 // the blinking cursor.
491 if (notJustMovingTheMouse)
492 stopBlinkingCursor();
494 buffer_view_->mouseEventDispatch(cmd);
496 // Skip these when selecting
497 if (cmd.action != LFUN_MOUSE_MOTION) {
498 completer_->updateVisibility(false, false);
499 lyx_view_->updateDialogs();
500 lyx_view_->updateStatusBar();
503 // GUI tweaks except with mouse motion with no button pressed.
504 if (notJustMovingTheMouse) {
505 // Slight hack: this is only called currently when we
506 // clicked somewhere, so we force through the display
507 // of the new status here.
508 lyx_view_->clearMessage();
510 // Show the cursor immediately after any operation
511 startBlinkingCursor();
516 void GuiWorkArea::resizeBufferView()
518 // WARNING: Please don't put any code that will trigger a repaint here!
519 // We are already inside a paint event.
520 lyx_view_->setBusy(true);
523 buffer_view_->cursorPosAndHeight(p, h);
524 bool const cursor_in_view = buffer_view_->cursorInView(p, h);
525 buffer_view_->resize(viewport()->width(), viewport()->height());
527 buffer_view_->scrollToCursor();
530 // Update scrollbars which might have changed due different
531 // BufferView dimension. This is especially important when the
532 // BufferView goes from zero-size to the real-size for the first time,
533 // as the scrollbar paramters are then set for the first time.
536 lyx_view_->updateLayoutList();
537 lyx_view_->setBusy(false);
538 need_resize_ = false;
542 void GuiWorkArea::showCursor()
548 bool l_shape = false;
549 Font const & realfont = buffer_view_->cursor().real_current_font;
550 BufferParams const & bp = buffer_view_->buffer().params();
551 bool const samelang = realfont.language() == bp.language;
552 bool const isrtl = realfont.isVisibleRightToLeft();
554 if (!samelang || isrtl != bp.language->rightToLeft())
557 // The ERT language hack needs fixing up
558 if (realfont.language() == latex_language)
563 buffer_view_->cursorPosAndHeight(p, h);
564 // show cursor on screen
565 Cursor & cur = buffer_view_->cursor();
566 bool completable = cur.inset().showCompletionCursor()
567 && completer_->completionAvailable()
568 && !completer_->popupVisible()
569 && !completer_->inlineVisible();
570 if (buffer_view_->cursorInView(p, h)) {
571 cursor_visible_ = true;
572 showCursor(p.x_, p.y_, h, l_shape, isrtl, completable);
577 void GuiWorkArea::hideCursor()
579 if (!cursor_visible_)
582 cursor_visible_ = false;
587 void GuiWorkArea::toggleCursor()
596 void GuiWorkArea::updateScrollbar()
598 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
599 // WARNING: don't touch at the scrollbar value like this:
600 // verticalScrollBar()->setValue(scroll_.position);
601 // because this would cause a recursive signal/slot calling with
602 // GuiWorkArea::scrollTo
603 verticalScrollBar()->setRange(scroll_.min, scroll_.max);
604 verticalScrollBar()->setPageStep(scroll_.page_step);
605 verticalScrollBar()->setSingleStep(scroll_.single_step);
606 verticalScrollBar()->setSliderPosition(scroll_.position);
610 void GuiWorkArea::scrollTo(int value)
612 stopBlinkingCursor();
613 buffer_view_->scrollDocView(value);
615 if (lyxrc.cursor_follows_scrollbar) {
616 buffer_view_->setCursorFromScrollbar();
617 lyx_view_->updateLayoutList();
619 // Show the cursor immediately after any operation.
620 startBlinkingCursor();
621 QApplication::syncX();
625 bool GuiWorkArea::event(QEvent * e)
628 case QEvent::ToolTip: {
629 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
630 if (lyxrc.use_tooltip) {
631 QPoint pos = helpEvent->pos();
632 if (pos.x() < viewport()->width()) {
633 QString s = toqstr(buffer_view_->toolTip(pos.x(), pos.y()));
634 QToolTip::showText(helpEvent->globalPos(), s);
637 QToolTip::hideText();
639 // Don't forget to accept the event!
644 case QEvent::ShortcutOverride: {
645 // We catch this event in order to catch the Tab or Shift+Tab key press
646 // which are otherwise reserved to focus switching between controls
648 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
649 if ((ke->key() != Qt::Key_Tab && ke->key() != Qt::Key_Backtab)
650 || ke->modifiers() & Qt::ControlModifier)
651 return QAbstractScrollArea::event(e);
657 return QAbstractScrollArea::event(e);
663 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
666 if (e->reason() == QContextMenuEvent::Mouse)
667 // the position is set on mouse press
668 pos = context_target_pos_;
671 Cursor const & cur = buffer_view_->cursor();
672 if (e->reason() == QContextMenuEvent::Keyboard && cur.inTexted()) {
673 // Do not access the context menu of math right in front of before
674 // the cursor. This does not work when the cursor is in text.
675 Inset * inset = cur.paragraph().getInset(cur.pos());
676 if (inset && inset->asInsetMath())
678 else if (cur.pos() > 0) {
679 Inset * inset = cur.paragraph().getInset(cur.pos() - 1);
684 docstring name = buffer_view_->contextMenu(pos.x(), pos.y());
686 QAbstractScrollArea::contextMenuEvent(e);
689 QMenu * menu = guiApp->menus().menu(toqstr(name), *lyx_view_);
691 QAbstractScrollArea::contextMenuEvent(e);
694 // Position the menu to the right.
695 // FIXME: menu position should be different for RTL text.
696 menu->exec(e->globalPos());
701 void GuiWorkArea::focusInEvent(QFocusEvent * e)
703 LYXERR(Debug::DEBUG, "GuiWorkArea::focusInEvent(): " << this << endl);
704 if (lyx_view_->currentWorkArea() != this)
705 lyx_view_->setCurrentWorkArea(this);
707 startBlinkingCursor();
708 QAbstractScrollArea::focusInEvent(e);
712 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
714 LYXERR(Debug::DEBUG, "GuiWorkArea::focusOutEvent(): " << this << endl);
715 stopBlinkingCursor();
716 QAbstractScrollArea::focusOutEvent(e);
720 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
722 if (dc_event_.active && dc_event_ == *e) {
723 dc_event_.active = false;
724 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
725 q_button_state(e->button()));
731 if (e->button() == Qt::RightButton)
732 context_target_pos_ = e->pos();
734 inputContext()->reset();
736 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
737 q_button_state(e->button()));
738 dispatch(cmd, q_key_state(e->modifiers()));
743 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
745 if (synthetic_mouse_event_.timeout.running())
746 synthetic_mouse_event_.timeout.stop();
748 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
749 q_button_state(e->button()));
755 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
757 // we kill the triple click if we move
758 doubleClickTimeout();
759 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
760 q_motion_state(e->buttons()));
764 // If we're above or below the work area...
765 if (e->y() <= 20 || e->y() >= viewport()->height() - 20) {
766 // Make sure only a synthetic event can cause a page scroll,
767 // so they come at a steady rate:
769 // _Force_ a scroll up:
772 cmd.y = viewport()->height();
773 // Store the event, to be handled when the timeout expires.
774 synthetic_mouse_event_.cmd = cmd;
776 if (synthetic_mouse_event_.timeout.running())
777 // Discard the event. Note that it _may_ be handled
778 // when the timeout expires if
779 // synthetic_mouse_event_.cmd has not been overwritten.
780 // Ie, when the timeout expires, we handle the
781 // most recent event but discard all others that
782 // occurred after the one used to start the timeout
783 // in the first place.
786 synthetic_mouse_event_.restart_timeout = true;
787 synthetic_mouse_event_.timeout.start();
788 // Fall through to handle this event...
790 } else if (synthetic_mouse_event_.timeout.running()) {
791 // Store the event, to be possibly handled when the timeout
793 // Once the timeout has expired, normal control is returned
794 // to mouseMoveEvent (restart_timeout = false).
795 // This results in a much smoother 'feel' when moving the
796 // mouse back into the work area.
797 synthetic_mouse_event_.cmd = cmd;
798 synthetic_mouse_event_.restart_timeout = false;
802 // Has anything changed on-screen since the last QMouseEvent
804 if (e->x() == synthetic_mouse_event_.x_old
805 && e->y() == synthetic_mouse_event_.y_old
806 && synthetic_mouse_event_.min_scrollbar_old == verticalScrollBar()->minimum()
807 && synthetic_mouse_event_.max_scrollbar_old == verticalScrollBar()->maximum()) {
808 // Nothing changed on-screen since the last QMouseEvent.
812 // Yes something has changed. Store the params used to check this.
813 synthetic_mouse_event_.x_old = e->x();
814 synthetic_mouse_event_.y_old = e->y();
815 synthetic_mouse_event_.min_scrollbar_old = verticalScrollBar()->minimum();
816 synthetic_mouse_event_.max_scrollbar_old = verticalScrollBar()->maximum();
818 // ... and dispatch the event to the LyX core.
823 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
825 // Wheel rotation by one notch results in a delta() of 120 (see
826 // documentation of QWheelEvent)
827 int const delta = ev->delta() / 120;
828 if (ev->modifiers() & Qt::ControlModifier) {
829 docstring arg = convert<docstring>(5 * delta);
830 lyx::dispatch(FuncRequest(LFUN_BUFFER_ZOOM_IN, arg));
834 // Take into account the desktop wide settings.
835 int const lines = qApp->wheelScrollLines();
836 int const page_step = verticalScrollBar()->pageStep();
837 // Test if the wheel mouse is set to one screen at a time.
838 int scroll_value = lines > page_step
839 ? page_step : lines * verticalScrollBar()->singleStep();
841 // Take into account the rotation.
842 scroll_value *= delta;
844 // Take into account user preference.
845 scroll_value = int(scroll_value * lyxrc.mouse_wheel_speed);
846 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << lines
847 << " delta = " << delta << " scroll_value = " << scroll_value
848 << " page_step = " << page_step);
850 verticalScrollBar()->setValue(verticalScrollBar()->value() - scroll_value);
856 void GuiWorkArea::generateSyntheticMouseEvent()
858 // Set things off to generate the _next_ 'pseudo' event.
859 if (synthetic_mouse_event_.restart_timeout)
860 synthetic_mouse_event_.timeout.start();
862 // Has anything changed on-screen since the last timeout signal
864 int const min_scrollbar = verticalScrollBar()->minimum();
865 int const max_scrollbar = verticalScrollBar()->maximum();
866 if (min_scrollbar == synthetic_mouse_event_.min_scrollbar_old
867 && max_scrollbar == synthetic_mouse_event_.max_scrollbar_old) {
870 // Yes it has. Store the params used to check this.
871 synthetic_mouse_event_.min_scrollbar_old = min_scrollbar;
872 synthetic_mouse_event_.max_scrollbar_old = max_scrollbar;
873 // ... and dispatch the event to the LyX core.
874 dispatch(synthetic_mouse_event_.cmd);
878 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
880 // Do not process here some keys if dialog_mode_ is set
882 && (ev->modifiers() == Qt::NoModifier
883 || ev->modifiers() == Qt::ShiftModifier)
884 && (ev->key() == Qt::Key_Escape
885 || ev->key() == Qt::Key_Enter
886 || ev->key() == Qt::Key_Return)
892 // intercept some keys if completion popup is visible
893 if (completer_->popupVisible()) {
897 completer_->activate();
903 // do nothing if there are other events
904 // (the auto repeated events come too fast)
905 // \todo FIXME: remove hard coded Qt keys, process the key binding
907 if (XEventsQueued(QX11Info::display(), 0) > 1 && ev->isAutoRepeat()
908 && (Qt::Key_PageDown || Qt::Key_PageUp)) {
909 LYXERR(Debug::KEY, "system is busy: scroll key event ignored");
915 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
916 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key());
919 setKeySymbol(&sym, ev);
921 processKeySym(sym, q_key_state(ev->modifiers()));
929 void GuiWorkArea::doubleClickTimeout()
931 dc_event_.active = false;
935 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
937 dc_event_ = DoubleClick(ev);
938 QTimer::singleShot(QApplication::doubleClickInterval(), this,
939 SLOT(doubleClickTimeout()));
940 FuncRequest cmd(LFUN_MOUSE_DOUBLE,
942 q_button_state(ev->button()));
948 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
950 QAbstractScrollArea::resizeEvent(ev);
956 void GuiWorkArea::update(int x, int y, int w, int h)
958 viewport()->repaint(x, y, w, h);
962 void GuiWorkArea::paintEvent(QPaintEvent * ev)
964 QRect const rc = ev->rect();
965 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
966 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
969 screen_ = QPixmap(viewport()->width(), viewport()->height());
971 if (cursor_visible_) {
977 QPainter pain(viewport());
978 pain.drawPixmap(rc, screen_, rc);
984 void GuiWorkArea::updateScreen()
986 GuiPainter pain(&screen_);
987 buffer_view_->draw(pain);
991 void GuiWorkArea::showCursor(int x, int y, int h,
992 bool l_shape, bool rtl, bool completable)
994 if (schedule_redraw_) {
995 // This happens when a graphic conversion is finished. As we don't know
996 // the size of the new graphics, it's better the update everything.
997 // We can't use redraw() here because this would trigger a infinite
998 // recursive loop with showCursor().
999 buffer_view_->resize(viewport()->width(), viewport()->height());
1002 viewport()->update(QRect(0, 0, viewport()->width(), viewport()->height()));
1003 schedule_redraw_ = false;
1004 // Show the cursor immediately after the update.
1010 cursor_->update(x, y, h, l_shape, rtl, completable);
1012 viewport()->update(cursor_->rect());
1016 void GuiWorkArea::removeCursor()
1019 //if (!qApp->focusWidget())
1020 viewport()->update(cursor_->rect());
1024 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
1026 QString const & commit_string = e->commitString();
1027 docstring const & preedit_string
1028 = qstring_to_ucs4(e->preeditString());
1030 if (!commit_string.isEmpty()) {
1032 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
1033 << " commitString: " << e->commitString());
1037 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
1038 for (int i = 0; i != commit_string.size(); ++i) {
1039 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
1044 // Hide the cursor during the kana-kanji transformation.
1045 if (preedit_string.empty())
1046 startBlinkingCursor();
1048 stopBlinkingCursor();
1050 // last_width : for checking if last preedit string was/wasn't empty.
1051 static bool last_width = false;
1052 if (!last_width && preedit_string.empty()) {
1053 // if last_width is last length of preedit string.
1058 GuiPainter pain(&screen_);
1059 buffer_view_->updateMetrics();
1060 buffer_view_->draw(pain);
1061 FontInfo font = buffer_view_->cursor().getFont().fontInfo();
1062 FontMetrics const & fm = theFontMetrics(font);
1063 int height = fm.maxHeight();
1064 int cur_x = cursor_->rect().left();
1065 int cur_y = cursor_->rect().bottom();
1067 // redraw area of preedit string.
1068 update(0, cur_y - height, viewport()->width(),
1069 (height + 1) * preedit_lines_);
1071 if (preedit_string.empty()) {
1079 // att : stores an IM attribute.
1080 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
1082 // get attributes of input method cursor.
1083 // cursor_pos : cursor position in preedit string.
1084 size_t cursor_pos = 0;
1085 bool cursor_is_visible = false;
1086 for (int i = 0; i != att.size(); ++i) {
1087 if (att.at(i).type == QInputMethodEvent::Cursor) {
1088 cursor_pos = att.at(i).start;
1089 cursor_is_visible = att.at(i).length != 0;
1094 size_t preedit_length = preedit_string.length();
1096 // get position of selection in input method.
1097 // FIXME: isn't there a way to do this simplier?
1098 // rStart : cursor position in selected string in IM.
1100 // rLength : selected string length in IM.
1102 if (cursor_pos < preedit_length) {
1103 for (int i = 0; i != att.size(); ++i) {
1104 if (att.at(i).type == QInputMethodEvent::TextFormat) {
1105 if (att.at(i).start <= int(cursor_pos)
1106 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
1107 rStart = att.at(i).start;
1108 rLength = att.at(i).length;
1109 if (!cursor_is_visible)
1110 cursor_pos += rLength;
1117 rStart = cursor_pos;
1121 int const right_margin = buffer_view_->rightMargin();
1122 Painter::preedit_style ps;
1123 // Most often there would be only one line:
1125 for (size_t pos = 0; pos != preedit_length; ++pos) {
1126 char_type const typed_char = preedit_string[pos];
1127 // reset preedit string style
1128 ps = Painter::preedit_default;
1130 // if we reached the right extremity of the screen, go to next line.
1131 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
1132 cur_x = right_margin;
1133 cur_y += height + 1;
1136 // preedit strings are displayed with dashed underline
1137 // and partial strings are displayed white on black indicating
1138 // that we are in selecting mode in the input method.
1139 // FIXME: rLength == preedit_length is not a changing condition
1140 // FIXME: should be put out of the loop.
1142 && pos < rStart + rLength
1143 && !(cursor_pos < rLength && rLength == preedit_length))
1144 ps = Painter::preedit_selecting;
1146 if (pos == cursor_pos
1147 && (cursor_pos < rLength && rLength == preedit_length))
1148 ps = Painter::preedit_cursor;
1150 // draw one character and update cur_x.
1151 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1154 // update the preedit string screen area.
1155 update(0, cur_y - preedit_lines_*height, viewport()->width(),
1156 (height + 1) * preedit_lines_);
1158 // Don't forget to accept the event!
1163 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1165 QRect cur_r(0, 0, 0, 0);
1167 // this is the CJK-specific composition window position and
1168 // the context menu position when the menu key is pressed.
1169 case Qt::ImMicroFocus:
1170 cur_r = cursor_->rect();
1171 if (preedit_lines_ != 1)
1173 cur_r.moveBottom(cur_r.bottom()
1174 + cur_r.height() * (preedit_lines_ - 1));
1175 // return lower right of cursor in LyX.
1178 return QWidget::inputMethodQuery(query);
1183 void GuiWorkArea::updateWindowTitle()
1185 docstring maximize_title;
1186 docstring minimize_title;
1188 Buffer & buf = buffer_view_->buffer();
1189 FileName const fileName = buf.fileName();
1190 if (!fileName.empty()) {
1191 maximize_title = fileName.displayName(30);
1192 minimize_title = from_utf8(fileName.onlyFileName());
1193 if (buf.lyxvc().inUse()) {
1194 if (buf.lyxvc().locker().empty())
1195 maximize_title += _(" (version control)");
1197 maximize_title += _(" (version control, locking)");
1199 if (!buf.isClean()) {
1200 maximize_title += _(" (changed)");
1201 minimize_title += char_type('*');
1203 if (buf.isReadonly())
1204 maximize_title += _(" (read only)");
1207 QString title = windowTitle();
1208 QString new_title = toqstr(maximize_title);
1209 if (title == new_title)
1212 QWidget::setWindowTitle(new_title);
1213 QWidget::setWindowIconText(toqstr(minimize_title));
1218 void GuiWorkArea::setReadOnly(bool read_only)
1220 if (read_only_ == read_only)
1222 read_only_ = read_only;
1223 updateWindowTitle();
1224 if (this == lyx_view_->currentWorkArea())
1225 lyx_view_->updateDialogs();
1229 bool GuiWorkArea::isFullScreen()
1231 return lyx_view_ && lyx_view_->isFullScreen();
1235 ////////////////////////////////////////////////////////////////////
1239 ////////////////////////////////////////////////////////////////////
1242 EmbeddedWorkArea::EmbeddedWorkArea(QWidget * w): GuiWorkArea(w)
1244 buffer_ = theBufferList().newBuffer(
1245 support::FileName::tempName().absFilename() + "_embedded.internal");
1246 buffer_->setUnnamed(true);
1247 buffer_->setFullyLoaded(true);
1248 setBuffer(*buffer_);
1249 setDialogMode(true);
1253 EmbeddedWorkArea::~EmbeddedWorkArea()
1255 // No need to destroy buffer and bufferview here, because it is done
1256 // in theBuffeerList() destruction loop at application exit
1260 void EmbeddedWorkArea::closeEvent(QCloseEvent * ev)
1263 GuiWorkArea::closeEvent(ev);
1267 void EmbeddedWorkArea::hideEvent(QHideEvent * ev)
1270 GuiWorkArea::hideEvent(ev);
1274 void EmbeddedWorkArea::disable()
1276 stopBlinkingCursor();
1277 if (view().currentWorkArea() != this)
1279 // No problem if currentMainWorkArea() is 0 (setCurrentWorkArea()
1280 // tolerates it and shows the background logo), what happens if
1281 // an EmbeddedWorkArea is closed after closing all document WAs
1282 view().setCurrentWorkArea(view().currentMainWorkArea());
1285 ////////////////////////////////////////////////////////////////////
1289 ////////////////////////////////////////////////////////////////////
1292 class NoTabFrameMacStyle : public QMacStyle {
1295 QRect subElementRect(SubElement element, const QStyleOption * option,
1296 const QWidget * widget = 0) const
1298 QRect rect = QMacStyle::subElementRect(element, option, widget);
1299 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1301 // The Qt Mac style puts the contents into a 3 pixel wide box
1302 // which looks very ugly and not like other Mac applications.
1303 // Hence we remove this here, and moreover the 16 pixel round
1304 // frame above if the tab bar is hidden.
1305 if (element == QStyle::SE_TabWidgetTabContents) {
1306 rect.adjust(- rect.left(), 0, rect.left(), 0);
1315 NoTabFrameMacStyle noTabFrameMacStyle;
1319 TabWorkArea::TabWorkArea(QWidget * parent)
1320 : QTabWidget(parent), clicked_tab_(-1)
1323 setStyle(&noTabFrameMacStyle);
1325 #if QT_VERSION < 0x040500
1326 lyxrc.single_close_tab_button = true;
1329 QPalette pal = palette();
1330 pal.setColor(QPalette::Active, QPalette::Button,
1331 pal.color(QPalette::Active, QPalette::Window));
1332 pal.setColor(QPalette::Disabled, QPalette::Button,
1333 pal.color(QPalette::Disabled, QPalette::Window));
1334 pal.setColor(QPalette::Inactive, QPalette::Button,
1335 pal.color(QPalette::Inactive, QPalette::Window));
1337 QObject::connect(this, SIGNAL(currentChanged(int)),
1338 this, SLOT(on_currentTabChanged(int)));
1340 closeBufferButton = new QToolButton(this);
1341 closeBufferButton->setPalette(pal);
1342 // FIXME: rename the icon to closebuffer.png
1343 closeBufferButton->setIcon(QIcon(getPixmap("images/", "closetab", "png")));
1344 closeBufferButton->setText("Close File");
1345 closeBufferButton->setAutoRaise(true);
1346 closeBufferButton->setCursor(Qt::ArrowCursor);
1347 closeBufferButton->setToolTip(qt_("Close File"));
1348 closeBufferButton->setEnabled(true);
1349 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1350 this, SLOT(closeCurrentBuffer()));
1351 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1353 // setup drag'n'drop
1354 QTabBar* tb = new DragTabBar;
1355 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1356 this, SLOT(moveTab(int, int)));
1357 tb->setElideMode(Qt::ElideNone);
1360 // make us responsible for the context menu of the tabbar
1361 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1362 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1363 this, SLOT(showContextMenu(const QPoint &)));
1364 #if QT_VERSION >= 0x040500
1365 connect(tb, SIGNAL(tabCloseRequested(int)),
1366 this, SLOT(closeTab(int)));
1369 setUsesScrollButtons(true);
1373 void TabWorkArea::setFullScreen(bool full_screen)
1375 for (int i = 0; i != count(); ++i) {
1376 if (GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(i)))
1377 wa->setFullScreen(full_screen);
1380 if (lyxrc.full_screen_tabbar)
1381 showBar(!full_screen && count() > 1);
1385 void TabWorkArea::showBar(bool show)
1387 tabBar()->setEnabled(show);
1388 tabBar()->setVisible(show);
1389 closeBufferButton->setVisible(show && lyxrc.single_close_tab_button);
1390 #if QT_VERSION >= 0x040500
1391 setTabsClosable(!lyxrc.single_close_tab_button);
1396 GuiWorkArea * TabWorkArea::currentWorkArea()
1401 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
1407 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
1409 for (int i = 0; i != count(); ++i) {
1410 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(i));
1411 LASSERT(wa, return 0);
1412 if (&wa->bufferView().buffer() == &buffer)
1419 void TabWorkArea::closeAll()
1422 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(0));
1430 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1432 LASSERT(work_area, /**/);
1433 int index = indexOf(work_area);
1437 if (index == currentIndex())
1438 // Make sure the work area is up to date.
1439 on_currentTabChanged(index);
1441 // Switch to the work area.
1442 setCurrentIndex(index);
1443 work_area->setFocus();
1449 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1451 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1452 wa->setUpdatesEnabled(false);
1453 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1454 // when hiding it again below).
1455 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1456 showBar(count() > 0);
1457 addTab(wa, wa->windowTitle());
1458 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1459 this, SLOT(updateTabTexts()));
1460 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1461 setFullScreen(true);
1463 // Hide tabbar if there's only one tab.
1464 showBar(count() > 1);
1472 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1474 LASSERT(work_area, return false);
1475 int index = indexOf(work_area);
1479 work_area->setUpdatesEnabled(false);
1484 // make sure the next work area is enabled.
1485 currentWidget()->setUpdatesEnabled(true);
1486 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1487 setFullScreen(true);
1489 // Show tabbar only if there's more than one tab.
1490 showBar(count() > 1);
1492 lastWorkAreaRemoved();
1500 void TabWorkArea::on_currentTabChanged(int i)
1502 // returns e.g. on application destruction
1505 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(i));
1506 LASSERT(wa, return);
1507 wa->setUpdatesEnabled(true);
1511 currentWorkAreaChanged(wa);
1513 LYXERR(Debug::GUI, "currentTabChanged " << i
1514 << " File: " << wa->bufferView().buffer().absFileName());
1518 void TabWorkArea::closeCurrentBuffer()
1521 if (clicked_tab_ == -1)
1522 wa = currentWorkArea();
1524 wa = dynamic_cast<GuiWorkArea *>(widget(clicked_tab_));
1527 wa->view().closeWorkArea(wa);
1531 void TabWorkArea::hideCurrentTab()
1534 if (clicked_tab_ == -1)
1535 wa = currentWorkArea();
1537 wa = dynamic_cast<GuiWorkArea *>(widget(clicked_tab_));
1540 wa->view().hideWorkArea(wa);
1544 void TabWorkArea::closeTab(int index)
1546 on_currentTabChanged(index);
1549 wa = currentWorkArea();
1551 wa = dynamic_cast<GuiWorkArea *>(widget(index));
1554 wa->view().closeWorkArea(wa);
1561 /// make vector happy
1564 DisplayPath(int tab, FileName const & filename)
1567 filename_ = (filename.extension() == "lyx") ?
1568 toqstr(filename.onlyFileNameWithoutExt())
1569 : toqstr(filename.onlyFileName());
1570 postfix_ = toqstr(filename.absoluteFilePath()).
1571 split("/", QString::SkipEmptyParts);
1572 postfix_.pop_back();
1573 abs_ = toqstr(filename.absoluteFilePath());
1574 dottedPrefix_ = false;
1577 /// Absolute path for debugging.
1582 /// Add the first segment from the postfix or three dots to the prefix.
1583 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1584 /// when really needed.
1585 void shiftPathSegment(bool dotted)
1587 if (postfix_.count() <= 0)
1591 if (dottedPrefix_ && !prefix_.isEmpty())
1593 prefix_ += postfix_.front() + "/";
1595 dottedPrefix_ = dotted && !prefix_.isEmpty();
1596 postfix_.pop_front();
1599 QString displayString() const
1601 if (prefix_.isEmpty())
1604 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1605 return prefix_ + (dots ? ".../" : "") + filename_;
1608 QString forecastPathString() const
1610 if (postfix_.count() == 0)
1611 return displayString();
1614 + (dottedPrefix_ ? ".../" : "")
1615 + postfix_.front() + "/";
1618 bool final() const { return postfix_.empty(); }
1620 int tab() const { return tab_; }
1626 QStringList postfix_;
1639 bool operator<(DisplayPath const & a, DisplayPath const & b)
1641 return a.displayString() < b.displayString();
1645 bool operator==(DisplayPath const & a, DisplayPath const & b)
1647 return a.displayString() == b.displayString();
1651 void TabWorkArea::updateTabTexts()
1656 std::list<DisplayPath> paths;
1657 typedef std::list<DisplayPath>::iterator It;
1659 // collect full names first: path into postfix, empty prefix and
1660 // filename without extension
1661 for (size_t i = 0; i < n; ++i) {
1662 GuiWorkArea * i_wa = dynamic_cast<GuiWorkArea *>(widget(i));
1663 FileName const fn = i_wa->bufferView().buffer().fileName();
1664 paths.push_back(DisplayPath(i, fn));
1667 // go through path segments and see if it helps to make the path more unique
1668 bool somethingChanged = true;
1669 bool allFinal = false;
1670 while (somethingChanged && !allFinal) {
1671 // adding path segments changes order
1674 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1675 somethingChanged = false;
1678 // find segments which are not unique (i.e. non-atomic)
1679 It it = paths.begin();
1681 QString segString = it->displayString();
1682 for (; it != paths.end(); ++it) {
1683 // look to the next item
1688 allFinal = allFinal && it->final();
1690 LYXERR(Debug::GUI, "it = " << it->abs()
1691 << " => " << it->displayString());
1693 // still the same segment?
1695 if ((next != paths.end()
1696 && (nextString = next->displayString()) == segString))
1698 LYXERR(Debug::GUI, "segment ended");
1700 // only a trivial one with one element?
1701 if (it == segStart) {
1702 // start new segment
1704 segString = nextString;
1708 // we found a non-atomic segment segStart <= sit <= it < next.
1709 // Shift path segments and hope for the best
1710 // that it makes the path more unique.
1711 somethingChanged = true;
1713 QString dspString = sit->forecastPathString();
1714 LYXERR(Debug::GUI, "first forecast found for "
1715 << sit->abs() << " => " << dspString);
1717 bool moreUnique = false;
1718 for (; sit != next; ++sit) {
1719 if (sit->forecastPathString() != dspString) {
1720 LYXERR(Debug::GUI, "different forecast found for "
1721 << sit->abs() << " => " << sit->forecastPathString());
1725 LYXERR(Debug::GUI, "same forecast found for "
1726 << sit->abs() << " => " << dspString);
1729 // if the path segment helped, add it. Otherwise add dots
1730 bool dots = !moreUnique;
1731 LYXERR(Debug::GUI, "using dots = " << dots);
1732 for (sit = segStart; sit != next; ++sit) {
1733 sit->shiftPathSegment(dots);
1734 LYXERR(Debug::GUI, "shifting "
1735 << sit->abs() << " => " << sit->displayString());
1738 // start new segment
1740 segString = nextString;
1744 // set new tab titles
1745 for (It it = paths.begin(); it != paths.end(); ++it) {
1746 GuiWorkArea * i_wa = dynamic_cast<GuiWorkArea *>(widget(it->tab()));
1747 Buffer & buf = i_wa->bufferView().buffer();
1748 if (!buf.fileName().empty() && !buf.isClean())
1749 setTabText(it->tab(), it->displayString() + "*");
1751 setTabText(it->tab(), it->displayString());
1756 void TabWorkArea::showContextMenu(const QPoint & pos)
1759 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
1760 if (clicked_tab_ == -1)
1765 popup.addAction(QIcon(getPixmap("images/", "hidetab", "png")),
1766 qt_("Hide tab"), this, SLOT(hideCurrentTab()));
1767 popup.addAction(QIcon(getPixmap("images/", "closetab", "png")),
1768 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
1769 popup.exec(tabBar()->mapToGlobal(pos));
1775 void TabWorkArea::moveTab(int fromIndex, int toIndex)
1777 QWidget * w = widget(fromIndex);
1778 QIcon icon = tabIcon(fromIndex);
1779 QString text = tabText(fromIndex);
1781 setCurrentIndex(fromIndex);
1782 removeTab(fromIndex);
1783 insertTab(toIndex, w, icon, text);
1784 setCurrentIndex(toIndex);
1788 DragTabBar::DragTabBar(QWidget* parent)
1791 setAcceptDrops(true);
1792 #if QT_VERSION >= 0x040500
1793 setTabsClosable(!lyxrc.single_close_tab_button);
1798 #if QT_VERSION < 0x040300
1799 int DragTabBar::tabAt(QPoint const & position) const
1801 const int max = count();
1802 for (int i = 0; i < max; ++i) {
1803 if (tabRect(i).contains(position))
1811 void DragTabBar::mousePressEvent(QMouseEvent * event)
1813 if (event->button() == Qt::LeftButton)
1814 dragStartPos_ = event->pos();
1815 QTabBar::mousePressEvent(event);
1819 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
1821 // If the left button isn't pressed anymore then return
1822 if (!(event->buttons() & Qt::LeftButton))
1825 // If the distance is too small then return
1826 if ((event->pos() - dragStartPos_).manhattanLength()
1827 < QApplication::startDragDistance())
1830 // did we hit something after all?
1831 int tab = tabAt(dragStartPos_);
1835 // simulate button release to remove highlight from button
1836 int i = currentIndex();
1837 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
1838 event->button(), event->buttons(), 0);
1839 QTabBar::mouseReleaseEvent(&me);
1843 QDrag * drag = new QDrag(this);
1844 QMimeData * mimeData = new QMimeData;
1845 // a crude way to distinguish tab-reodering drops from other ones
1846 mimeData->setData("action", "tab-reordering") ;
1847 drag->setMimeData(mimeData);
1849 #if QT_VERSION >= 0x040300
1850 // get tab pixmap as cursor
1851 QRect r = tabRect(tab);
1852 QPixmap pixmap(r.size());
1853 render(&pixmap, - r.topLeft());
1854 drag->setPixmap(pixmap);
1857 drag->start(Qt::MoveAction);
1863 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
1865 // Only accept if it's an tab-reordering request
1866 QMimeData const * m = event->mimeData();
1867 QStringList formats = m->formats();
1868 if (formats.contains("action")
1869 && m->data("action") == "tab-reordering")
1870 event->acceptProposedAction();
1874 void DragTabBar::dropEvent(QDropEvent * event)
1876 int fromIndex = tabAt(dragStartPos_);
1877 int toIndex = tabAt(event->pos());
1879 // Tell interested objects that
1880 if (fromIndex != toIndex)
1881 tabMoveRequested(fromIndex, toIndex);
1882 event->acceptProposedAction();
1886 } // namespace frontend
1889 #include "moc_GuiWorkArea.cpp"