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"
17 #include "BufferParams.h"
18 #include "BufferView.h"
19 #include "CoordCache.h"
22 #include "FuncRequest.h"
23 #include "GuiApplication.h"
24 #include "GuiCompleter.h"
25 #include "GuiKeySymbol.h"
26 #include "GuiPainter.h"
28 #include "KeySymbol.h"
32 #include "MetricsInfo.h"
33 #include "qt_helpers.h"
37 #include "graphics/GraphicsImage.h"
38 #include "graphics/GraphicsLoader.h"
40 #include "support/debug.h"
41 #include "support/gettext.h"
42 #include "support/FileName.h"
44 #include "frontends/Application.h"
45 #include "frontends/FontMetrics.h"
46 #include "frontends/WorkAreaManager.h"
48 #include <QContextMenuEvent>
49 #include <QInputContext>
54 #include <QMainWindow>
58 #include <QPixmapCache>
61 #include <QToolButton>
65 #include <boost/bind.hpp>
69 extern "C" int XEventsQueued(Display *display, int mode);
73 int const CursorWidth = 2;
75 int const CursorWidth = 1;
77 int const TabIndicatorWidth = 3;
83 using namespace lyx::support;
88 /// return the LyX mouse button state from Qt's
89 static mouse_button::state q_button_state(Qt::MouseButton button)
91 mouse_button::state b = mouse_button::none;
94 b = mouse_button::button1;
97 b = mouse_button::button2;
100 b = mouse_button::button3;
109 /// return the LyX mouse button state from Qt's
110 mouse_button::state q_motion_state(Qt::MouseButtons state)
112 mouse_button::state b = mouse_button::none;
113 if (state & Qt::LeftButton)
114 b |= mouse_button::button1;
115 if (state & Qt::MidButton)
116 b |= mouse_button::button2;
117 if (state & Qt::RightButton)
118 b |= mouse_button::button3;
129 void draw(QPainter & painter)
131 if (!show_ || !rect_.isValid())
135 int l = x_ - rect_.left();
136 int r = rect_.right() - x_;
137 int bot = rect_.bottom();
139 // draw vertica linel
140 painter.fillRect(x_, y, CursorWidth, rect_.height(), color_);
142 // draw RTL/LTR indication
143 painter.setPen(color_);
146 painter.drawLine(x_, bot, x_ - l, bot);
148 painter.drawLine(x_, bot, x_ + CursorWidth + r, bot);
151 // draw completion triangle
153 int m = y + rect_.height() / 2;
154 int d = TabIndicatorWidth - 1;
156 painter.drawLine(x_ - 1, m - d, x_ - 1 - d, m);
157 painter.drawLine(x_ - 1, m + d, x_ - 1 - d, m);
159 painter.drawLine(x_ + CursorWidth, m - d, x_ + CursorWidth + d, m);
160 painter.drawLine(x_ + CursorWidth, m + d, x_ + CursorWidth + d, m);
165 void update(int x, int y, int h, bool l_shape,
166 bool rtl, bool completable)
168 color_ = guiApp->colorCache().get(Color_cursor);
171 completable_ = completable;
174 // extension to left and right
178 // RTL/LTR indication
186 // completion triangle
189 l = max(l, TabIndicatorWidth);
191 r = max(r, TabIndicatorWidth);
194 // compute overall rectangle
195 rect_ = QRect(x - l, y, CursorWidth + r + l, h);
198 void show(bool set_show = true) { show_ = set_show; }
199 void hide() { show_ = false; }
201 QRect const & rect() { return rect_; }
204 /// cursor is in RTL or LTR text
206 /// indication for RTL or LTR
208 /// triangle to show that a completion is available
214 /// rectangle, possibly with l_shape and completion triangle
216 /// x position (were the vertical line is drawn)
221 // This is a 'heartbeat' generating synthetic mouse move events when the
222 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
223 SyntheticMouseEvent::SyntheticMouseEvent()
224 : timeout(200), restart_timeout(true),
225 x_old(-1), y_old(-1), scrollbar_value_old(-1.0)
230 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & lv)
231 : buffer_view_(new BufferView(buffer)), lyx_view_(&lv),
232 cursor_visible_(false),
233 need_resize_(false), schedule_redraw_(false),
234 preedit_lines_(1), completer_(new GuiCompleter(this))
236 buffer.workAreaManager().add(this);
238 connect(&cursor_timeout_, SIGNAL(timeout()),
239 this, SLOT(toggleCursor()));
241 int const time = QApplication::cursorFlashTime() / 2;
243 cursor_timeout_.setInterval(time);
244 cursor_timeout_.start();
246 // let's initialize this just to be safe
247 cursor_timeout_.setInterval(500);
250 screen_ = QPixmap(viewport()->width(), viewport()->height());
251 cursor_ = new frontend::CursorWidget();
254 // HACK: Prevents an additional redraw when the scrollbar pops up
255 // which regularily happens on documents with more than one page.
256 // The policy should be set to "Qt::ScrollBarAsNeeded" soon.
257 // Since we have no geometry information yet, we assume that
258 // a document needs a scrollbar if there is more then four
259 // paragraph in the outermost text.
260 if (buffer.text().paragraphs().size() > 4)
261 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
262 QTimer::singleShot(50, this, SLOT(fixVerticalScrollBar()));
265 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
266 setAcceptDrops(true);
267 setMouseTracking(true);
268 setMinimumSize(100, 70);
270 setFrameStyle(QFrame::NoFrame);
272 setFrameStyle(QFrame::Box);
276 viewport()->setAutoFillBackground(false);
277 // We don't need double-buffering nor SystemBackground on
278 // the viewport because we have our own backing pixmap.
279 viewport()->setAttribute(Qt::WA_NoSystemBackground);
281 setFocusPolicy(Qt::WheelFocus);
283 viewport()->setCursor(Qt::IBeamCursor);
285 synthetic_mouse_event_.timeout.timeout.connect(
286 boost::bind(&GuiWorkArea::generateSyntheticMouseEvent,
289 // Initialize the vertical Scroll Bar
290 QObject::connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
291 this, SLOT(scrollTo(int)));
293 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
294 << " viewport height: " << viewport()->height());
296 // Enables input methods for asian languages.
297 // Must be set when creating custom text editing widgets.
298 setAttribute(Qt::WA_InputMethodEnabled, true);
302 GuiWorkArea::~GuiWorkArea()
304 buffer_view_->buffer().workAreaManager().remove(this);
310 void GuiWorkArea::fixVerticalScrollBar()
313 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
317 void GuiWorkArea::close()
319 lyx_view_->removeWorkArea(this);
323 void GuiWorkArea::setFullScreen(bool full_screen)
325 buffer_view_->setFullScreen(full_screen);
327 setFrameStyle(QFrame::NoFrame);
328 if (lyxrc.full_screen_scrollbar)
329 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
332 setFrameStyle(QFrame::NoFrame);
334 setFrameStyle(QFrame::Box);
336 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
341 BufferView & GuiWorkArea::bufferView()
343 return *buffer_view_;
347 BufferView const & GuiWorkArea::bufferView() const
349 return *buffer_view_;
353 void GuiWorkArea::stopBlinkingCursor()
355 cursor_timeout_.stop();
360 void GuiWorkArea::startBlinkingCursor()
363 //we're not supposed to cache this value.
364 int const time = QApplication::cursorFlashTime() / 2;
367 cursor_timeout_.setInterval(time);
368 cursor_timeout_.start();
372 void GuiWorkArea::redraw()
375 // No need to redraw in this case.
378 // No need to do anything if this is the current view. The BufferView
379 // metrics are already up to date.
380 if (lyx_view_ != guiApp->currentView()
381 || lyx_view_->currentWorkArea() != this) {
382 // FIXME: it would be nice to optimize for the off-screen case.
383 buffer_view_->updateMetrics();
384 buffer_view_->cursor().fixIfBroken();
387 // update cursor position, because otherwise it has to wait until
388 // the blinking interval is over
389 if (cursor_visible_) {
394 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
396 update(0, 0, viewport()->width(), viewport()->height());
398 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
399 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
401 lyx_view_->updateStatusBar();
403 if (lyxerr.debugging(Debug::WORKAREA))
404 buffer_view_->coordCache().dump();
408 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
410 if (lyx_view_->isFullScreen() && lyx_view_->menuBar()->isVisible()) {
411 // FIXME HACK: we should not have to do this here. See related comment
412 // in GuiView::event() (QEvent::ShortcutOverride)
413 lyx_view_->menuBar()->hide();
416 // In order to avoid bad surprise in the middle of an operation,
417 // we better stop the blinking cursor...
418 // the cursor gets restarted in GuiView::restartCursor()
419 stopBlinkingCursor();
421 theLyXFunc().setLyXView(lyx_view_);
422 theLyXFunc().processKeySym(key, mod);
426 void GuiWorkArea::dispatch(FuncRequest const & cmd0, KeyModifier mod)
429 if (cmd0.action == LFUN_FILE_OPEN) {
430 lyx_view_->dispatch(cmd0);
434 theLyXFunc().setLyXView(lyx_view_);
438 if (cmd0.action == LFUN_MOUSE_PRESS) {
439 if (mod == ShiftModifier)
440 cmd = FuncRequest(cmd0, "region-select");
441 else if (mod == ControlModifier)
442 cmd = FuncRequest(cmd0, "paragraph-select");
449 bool const notJustMovingTheMouse =
450 cmd.action != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
452 // In order to avoid bad surprise in the middle of an operation, we better stop
453 // the blinking cursor.
454 if (notJustMovingTheMouse)
455 stopBlinkingCursor();
457 buffer_view_->mouseEventDispatch(cmd);
459 // Skip these when selecting
460 if (cmd.action != LFUN_MOUSE_MOTION) {
461 completer_->updateVisibility(false, false);
462 lyx_view_->updateDialogs();
465 // GUI tweaks except with mouse motion with no button pressed.
466 if (notJustMovingTheMouse) {
467 // Slight hack: this is only called currently when we
468 // clicked somewhere, so we force through the display
469 // of the new status here.
470 lyx_view_->clearMessage();
472 // Show the cursor immediately after any operation
473 startBlinkingCursor();
478 void GuiWorkArea::resizeBufferView()
480 // WARNING: Please don't put any code that will trigger a repaint here!
481 // We are already inside a paint event.
482 lyx_view_->setBusy(true);
483 buffer_view_->resize(viewport()->width(), viewport()->height());
486 // Update scrollbars which might have changed due different
487 // BufferView dimension. This is especially important when the
488 // BufferView goes from zero-size to the real-size for the first time,
489 // as the scrollbar paramters are then set for the first time.
492 lyx_view_->updateLayoutList();
493 lyx_view_->setBusy(false);
494 need_resize_ = false;
498 void GuiWorkArea::showCursor()
504 bool l_shape = false;
505 Font const & realfont = buffer_view_->cursor().real_current_font;
506 BufferParams const & bp = buffer_view_->buffer().params();
507 bool const samelang = realfont.language() == bp.language;
508 bool const isrtl = realfont.isVisibleRightToLeft();
510 if (!samelang || isrtl != bp.language->rightToLeft())
513 // The ERT language hack needs fixing up
514 if (realfont.language() == latex_language)
517 Font const font = buffer_view_->cursor().getFont();
518 FontMetrics const & fm = theFontMetrics(font);
519 int const asc = fm.maxAscent();
520 int const des = fm.maxDescent();
524 Cursor & cur = buffer_view_->cursor();
528 // if it doesn't touch the screen, don't try to show it
529 bool cursorInView = true;
530 if (y + h < 0 || y >= viewport()->height())
531 cursorInView = false;
533 // show cursor on screen
534 bool completable = cur.inset().showCompletionCursor()
535 && completer_->completionAvailable()
536 && !completer_->popupVisible()
537 && !completer_->inlineVisible();
539 cursor_visible_ = true;
540 showCursor(x, y, h, l_shape, isrtl, completable);
545 void GuiWorkArea::hideCursor()
547 if (!cursor_visible_)
550 cursor_visible_ = false;
555 void GuiWorkArea::toggleCursor()
564 void GuiWorkArea::updateScrollbar()
566 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
568 // Block the scrollbar signal to prevent recursive signal/slot calling.
569 verticalScrollBar()->blockSignals(true);
570 verticalScrollBar()->setRange(scroll_.min, scroll_.max);
571 verticalScrollBar()->setPageStep(scroll_.page_step);
572 verticalScrollBar()->setSingleStep(scroll_.single_step);
573 verticalScrollBar()->setValue(scroll_.position);
574 verticalScrollBar()->setSliderPosition(scroll_.position);
575 verticalScrollBar()->blockSignals(false);
579 void GuiWorkArea::scrollTo(int value)
581 stopBlinkingCursor();
582 buffer_view_->scrollDocView(value);
584 if (lyxrc.cursor_follows_scrollbar) {
585 buffer_view_->setCursorFromScrollbar();
586 lyx_view_->updateLayoutList();
588 // Show the cursor immediately after any operation.
589 startBlinkingCursor();
590 QApplication::syncX();
594 bool GuiWorkArea::event(QEvent * e)
597 case QEvent::ToolTip: {
598 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
599 if (lyxrc.use_tooltip) {
600 QPoint pos = helpEvent->pos();
601 if (pos.x() < viewport()->width()) {
602 QString s = toqstr(buffer_view_->toolTip(pos.x(), pos.y()));
603 QToolTip::showText(helpEvent->globalPos(), s);
606 QToolTip::hideText();
608 // Don't forget to accept the event!
613 case QEvent::ShortcutOverride: {
614 // We catch this event in order to catch the Tab or Shift+Tab key press
615 // which are otherwise reserved to focus switching between controls
617 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
618 if ((ke->key() != Qt::Key_Tab && ke->key() != Qt::Key_Backtab)
619 || ke->modifiers() & Qt::ControlModifier)
620 return QAbstractScrollArea::event(e);
626 return QAbstractScrollArea::event(e);
632 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
634 QPoint pos = e->pos();
635 docstring name = buffer_view_->contextMenu(pos.x(), pos.y());
637 QAbstractScrollArea::contextMenuEvent(e);
640 QMenu * menu = guiApp->menus().menu(toqstr(name), *lyx_view_);
642 QAbstractScrollArea::contextMenuEvent(e);
645 // Position the menu to the right.
646 // FIXME: menu position should be different for RTL text.
647 menu->exec(e->globalPos());
652 void GuiWorkArea::focusInEvent(QFocusEvent * e)
654 if (lyx_view_->currentWorkArea() != this)
655 lyx_view_->setCurrentWorkArea(this);
657 // Repaint the whole screen.
658 // Note: this is different from redraw() as only the backing pixmap
659 // will be redrawn, which is cheap.
660 viewport()->repaint();
662 startBlinkingCursor();
663 QAbstractScrollArea::focusInEvent(e);
667 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
669 stopBlinkingCursor();
670 QAbstractScrollArea::focusOutEvent(e);
674 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
676 if (dc_event_.active && dc_event_ == *e) {
677 dc_event_.active = false;
678 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
679 q_button_state(e->button()));
685 inputContext()->reset();
687 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
688 q_button_state(e->button()));
689 dispatch(cmd, q_key_state(e->modifiers()));
694 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
696 if (synthetic_mouse_event_.timeout.running())
697 synthetic_mouse_event_.timeout.stop();
699 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
700 q_button_state(e->button()));
706 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
708 // we kill the triple click if we move
709 doubleClickTimeout();
710 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
711 q_motion_state(e->buttons()));
715 // If we're above or below the work area...
716 if (e->y() <= 20 || e->y() >= viewport()->height() - 20) {
717 // Make sure only a synthetic event can cause a page scroll,
718 // so they come at a steady rate:
720 // _Force_ a scroll up:
723 cmd.y = viewport()->height();
724 // Store the event, to be handled when the timeout expires.
725 synthetic_mouse_event_.cmd = cmd;
727 if (synthetic_mouse_event_.timeout.running())
728 // Discard the event. Note that it _may_ be handled
729 // when the timeout expires if
730 // synthetic_mouse_event_.cmd has not been overwritten.
731 // Ie, when the timeout expires, we handle the
732 // most recent event but discard all others that
733 // occurred after the one used to start the timeout
734 // in the first place.
737 synthetic_mouse_event_.restart_timeout = true;
738 synthetic_mouse_event_.timeout.start();
739 // Fall through to handle this event...
741 } else if (synthetic_mouse_event_.timeout.running()) {
742 // Store the event, to be possibly handled when the timeout
744 // Once the timeout has expired, normal control is returned
745 // to mouseMoveEvent (restart_timeout = false).
746 // This results in a much smoother 'feel' when moving the
747 // mouse back into the work area.
748 synthetic_mouse_event_.cmd = cmd;
749 synthetic_mouse_event_.restart_timeout = false;
753 // Has anything changed on-screen since the last QMouseEvent
755 double const scrollbar_value = verticalScrollBar()->value();
756 if (e->x() == synthetic_mouse_event_.x_old
757 && e->y() == synthetic_mouse_event_.y_old
758 && scrollbar_value == synthetic_mouse_event_.scrollbar_value_old) {
759 // Nothing changed on-screen since the last QMouseEvent.
763 // Yes something has changed. Store the params used to check this.
764 synthetic_mouse_event_.x_old = e->x();
765 synthetic_mouse_event_.y_old = e->y();
766 synthetic_mouse_event_.scrollbar_value_old = scrollbar_value;
768 // ... and dispatch the event to the LyX core.
773 void GuiWorkArea::wheelEvent(QWheelEvent * ev)
775 // Wheel rotation by one notch results in a delta() of 120 (see
776 // documentation of QWheelEvent)
777 int delta = ev->delta() / 120;
778 if (ev->modifiers() & Qt::ControlModifier) {
779 lyxrc.zoom -= 5 * delta;
782 // The global QPixmapCache is used in GuiPainter to cache text
783 // painting so we must reset it.
784 QPixmapCache::clear();
785 guiApp->fontLoader().update();
786 lyx::dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
788 double const lines = qApp->wheelScrollLines()
789 * lyxrc.mouse_wheel_speed * delta;
790 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << qApp->wheelScrollLines()
791 << " delta = " << ev->delta() << " lines = " << lines);
792 verticalScrollBar()->setValue(verticalScrollBar()->value() -
793 int(lines * verticalScrollBar()->singleStep()));
799 void GuiWorkArea::generateSyntheticMouseEvent()
801 // Set things off to generate the _next_ 'pseudo' event.
802 if (synthetic_mouse_event_.restart_timeout)
803 synthetic_mouse_event_.timeout.start();
805 // Has anything changed on-screen since the last timeout signal
807 double const scrollbar_value = verticalScrollBar()->value();
808 if (scrollbar_value != synthetic_mouse_event_.scrollbar_value_old) {
809 // Yes it has. Store the params used to check this.
810 synthetic_mouse_event_.scrollbar_value_old = scrollbar_value;
812 // ... and dispatch the event to the LyX core.
813 dispatch(synthetic_mouse_event_.cmd);
818 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
820 // intercept some keys if completion popup is visible
821 if (completer_->popupVisible()) {
825 completer_->activate();
831 // intercept keys for the completion
832 if (ev->key() == Qt::Key_Tab) {
838 if (completer_->popupVisible() && ev->key() == Qt::Key_Escape) {
839 completer_->hidePopup();
844 if (completer_->inlineVisible() && ev->key() == Qt::Key_Escape) {
845 completer_->hideInline();
850 // do nothing if there are other events
851 // (the auto repeated events come too fast)
852 // \todo FIXME: remove hard coded Qt keys, process the key binding
854 if (XEventsQueued(QX11Info::display(), 0) > 1 && ev->isAutoRepeat()
855 && (Qt::Key_PageDown || Qt::Key_PageUp)) {
856 LYXERR(Debug::KEY, "system is busy: scroll key event ignored");
862 LYXERR(Debug::KEY, " count: " << ev->count() << " text: " << ev->text()
863 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key());
866 setKeySymbol(&sym, ev);
867 processKeySym(sym, q_key_state(ev->modifiers()));
872 void GuiWorkArea::doubleClickTimeout()
874 dc_event_.active = false;
878 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
880 dc_event_ = DoubleClick(ev);
881 QTimer::singleShot(QApplication::doubleClickInterval(), this,
882 SLOT(doubleClickTimeout()));
883 FuncRequest cmd(LFUN_MOUSE_DOUBLE,
885 q_button_state(ev->button()));
891 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
893 QAbstractScrollArea::resizeEvent(ev);
899 void GuiWorkArea::update(int x, int y, int w, int h)
901 viewport()->repaint(x, y, w, h);
905 void GuiWorkArea::paintEvent(QPaintEvent * ev)
907 QRect const rc = ev->rect();
908 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
909 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
912 screen_ = QPixmap(viewport()->width(), viewport()->height());
918 QPainter pain(viewport());
919 pain.drawPixmap(rc, screen_, rc);
925 void GuiWorkArea::updateScreen()
927 GuiPainter pain(&screen_);
928 buffer_view_->draw(pain);
932 void GuiWorkArea::showCursor(int x, int y, int h,
933 bool l_shape, bool rtl, bool completable)
935 if (schedule_redraw_) {
936 buffer_view_->updateMetrics();
938 viewport()->update(QRect(0, 0, viewport()->width(), viewport()->height()));
939 schedule_redraw_ = false;
940 // Show the cursor immediately after the update.
946 cursor_->update(x, y, h, l_shape, rtl, completable);
948 viewport()->update(cursor_->rect());
952 void GuiWorkArea::removeCursor()
955 //if (!qApp->focusWidget())
956 viewport()->update(cursor_->rect());
960 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
962 QString const & commit_string = e->commitString();
963 docstring const & preedit_string
964 = qstring_to_ucs4(e->preeditString());
966 if (!commit_string.isEmpty()) {
968 LYXERR(Debug::KEY, "preeditString: " << e->preeditString()
969 << " commitString: " << e->commitString());
973 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
974 for (int i = 0; i != commit_string.size(); ++i) {
975 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
980 // Hide the cursor during the kana-kanji transformation.
981 if (preedit_string.empty())
982 startBlinkingCursor();
984 stopBlinkingCursor();
986 // last_width : for checking if last preedit string was/wasn't empty.
987 static bool last_width = false;
988 if (!last_width && preedit_string.empty()) {
989 // if last_width is last length of preedit string.
994 GuiPainter pain(&screen_);
995 buffer_view_->updateMetrics();
996 buffer_view_->draw(pain);
997 FontInfo font = buffer_view_->cursor().getFont().fontInfo();
998 FontMetrics const & fm = theFontMetrics(font);
999 int height = fm.maxHeight();
1000 int cur_x = cursor_->rect().left();
1001 int cur_y = cursor_->rect().bottom();
1003 // redraw area of preedit string.
1004 update(0, cur_y - height, viewport()->width(),
1005 (height + 1) * preedit_lines_);
1007 if (preedit_string.empty()) {
1015 // att : stores an IM attribute.
1016 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
1018 // get attributes of input method cursor.
1019 // cursor_pos : cursor position in preedit string.
1020 size_t cursor_pos = 0;
1021 bool cursor_is_visible = false;
1022 for (int i = 0; i != att.size(); ++i) {
1023 if (att.at(i).type == QInputMethodEvent::Cursor) {
1024 cursor_pos = att.at(i).start;
1025 cursor_is_visible = att.at(i).length != 0;
1030 size_t preedit_length = preedit_string.length();
1032 // get position of selection in input method.
1033 // FIXME: isn't there a way to do this simplier?
1034 // rStart : cursor position in selected string in IM.
1036 // rLength : selected string length in IM.
1038 if (cursor_pos < preedit_length) {
1039 for (int i = 0; i != att.size(); ++i) {
1040 if (att.at(i).type == QInputMethodEvent::TextFormat) {
1041 if (att.at(i).start <= int(cursor_pos)
1042 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
1043 rStart = att.at(i).start;
1044 rLength = att.at(i).length;
1045 if (!cursor_is_visible)
1046 cursor_pos += rLength;
1053 rStart = cursor_pos;
1057 int const right_margin = buffer_view_->rightMargin();
1058 Painter::preedit_style ps;
1059 // Most often there would be only one line:
1061 for (size_t pos = 0; pos != preedit_length; ++pos) {
1062 char_type const typed_char = preedit_string[pos];
1063 // reset preedit string style
1064 ps = Painter::preedit_default;
1066 // if we reached the right extremity of the screen, go to next line.
1067 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
1068 cur_x = right_margin;
1069 cur_y += height + 1;
1072 // preedit strings are displayed with dashed underline
1073 // and partial strings are displayed white on black indicating
1074 // that we are in selecting mode in the input method.
1075 // FIXME: rLength == preedit_length is not a changing condition
1076 // FIXME: should be put out of the loop.
1078 && pos < rStart + rLength
1079 && !(cursor_pos < rLength && rLength == preedit_length))
1080 ps = Painter::preedit_selecting;
1082 if (pos == cursor_pos
1083 && (cursor_pos < rLength && rLength == preedit_length))
1084 ps = Painter::preedit_cursor;
1086 // draw one character and update cur_x.
1087 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1090 // update the preedit string screen area.
1091 update(0, cur_y - preedit_lines_*height, viewport()->width(),
1092 (height + 1) * preedit_lines_);
1094 // Don't forget to accept the event!
1099 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1101 QRect cur_r(0,0,0,0);
1103 // this is the CJK-specific composition window position.
1104 case Qt::ImMicroFocus:
1105 cur_r = cursor_->rect();
1106 if (preedit_lines_ != 1)
1108 cur_r.moveBottom(cur_r.bottom() + cur_r.height() * preedit_lines_);
1109 // return lower right of cursor in LyX.
1112 return QWidget::inputMethodQuery(query);
1117 void GuiWorkArea::updateWindowTitle()
1119 docstring maximize_title;
1120 docstring minimize_title;
1122 Buffer & buf = buffer_view_->buffer();
1123 FileName const fileName = buf.fileName();
1124 if (!fileName.empty()) {
1125 maximize_title = fileName.displayName(30);
1126 minimize_title = from_utf8(fileName.onlyFileName());
1127 if (!buf.isClean()) {
1128 maximize_title += _(" (changed)");
1129 minimize_title += char_type('*');
1131 if (buf.isReadonly())
1132 maximize_title += _(" (read only)");
1135 QString title = windowTitle();
1136 QString new_title = toqstr(maximize_title);
1137 if (title == new_title)
1140 QWidget::setWindowTitle(new_title);
1141 QWidget::setWindowIconText(toqstr(minimize_title));
1146 void GuiWorkArea::setReadOnly(bool)
1148 updateWindowTitle();
1149 if (this == lyx_view_->currentWorkArea())
1150 lyx_view_->updateDialogs();
1154 bool GuiWorkArea::isFullScreen()
1156 return lyx_view_ && lyx_view_->isFullScreen();
1160 ////////////////////////////////////////////////////////////////////
1164 ////////////////////////////////////////////////////////////////////
1167 class NoTabFrameMacStyle : public QMacStyle {
1170 QRect subElementRect(SubElement element, const QStyleOption * option,
1171 const QWidget * widget = 0) const
1173 QRect rect = QMacStyle::subElementRect(element, option, widget);
1174 bool noBar = static_cast<QTabWidget const *>(widget)->count() <= 1;
1176 // The Qt Mac style puts the contents into a 3 pixel wide box
1177 // which looks very ugly and not like other Mac applications.
1178 // Hence we remove this here, and moreover the 16 pixel round
1179 // frame above if the tab bar is hidden.
1180 if (element == QStyle::SE_TabWidgetTabContents) {
1181 rect.adjust(- rect.left(), 0, rect.left(), 0);
1190 NoTabFrameMacStyle noTabFrameMacStyle;
1194 TabWorkArea::TabWorkArea(QWidget * parent)
1195 : QTabWidget(parent), clicked_tab_(-1)
1198 setStyle(&noTabFrameMacStyle);
1201 QPalette pal = palette();
1202 pal.setColor(QPalette::Active, QPalette::Button,
1203 pal.color(QPalette::Active, QPalette::Window));
1204 pal.setColor(QPalette::Disabled, QPalette::Button,
1205 pal.color(QPalette::Disabled, QPalette::Window));
1206 pal.setColor(QPalette::Inactive, QPalette::Button,
1207 pal.color(QPalette::Inactive, QPalette::Window));
1209 QObject::connect(this, SIGNAL(currentChanged(int)),
1210 this, SLOT(on_currentTabChanged(int)));
1212 QToolButton * closeBufferButton = new QToolButton(this);
1213 closeBufferButton->setPalette(pal);
1214 // FIXME: rename the icon to closebuffer.png
1215 closeBufferButton->setIcon(QIcon(":/images/closetab.png"));
1216 closeBufferButton->setText("Close File");
1217 closeBufferButton->setAutoRaise(true);
1218 closeBufferButton->setCursor(Qt::ArrowCursor);
1219 closeBufferButton->setToolTip(qt_("Close File"));
1220 closeBufferButton->setEnabled(true);
1221 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1222 this, SLOT(closeCurrentBuffer()));
1223 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1225 // setup drag'n'drop
1226 QTabBar* tb = new DragTabBar;
1227 connect(tb, SIGNAL(tabMoveRequested(int, int)),
1228 this, SLOT(moveTab(int, int)));
1229 tb->setElideMode(Qt::ElideNone);
1232 // make us responsible for the context menu of the tabbar
1233 tb->setContextMenuPolicy(Qt::CustomContextMenu);
1234 connect(tb, SIGNAL(customContextMenuRequested(const QPoint &)),
1235 this, SLOT(showContextMenu(const QPoint &)));
1237 setUsesScrollButtons(true);
1241 void TabWorkArea::setFullScreen(bool full_screen)
1243 for (int i = 0; i != count(); ++i) {
1244 if (GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(i)))
1245 wa->setFullScreen(full_screen);
1248 if (lyxrc.full_screen_tabbar)
1249 showBar(!full_screen && count()>1);
1253 void TabWorkArea::showBar(bool show)
1255 tabBar()->setEnabled(show);
1256 tabBar()->setVisible(show);
1260 GuiWorkArea * TabWorkArea::currentWorkArea()
1265 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
1271 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
1273 for (int i = 0; i != count(); ++i) {
1274 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(i));
1275 LASSERT(wa, return 0);
1276 if (&wa->bufferView().buffer() == &buffer)
1283 void TabWorkArea::closeAll()
1286 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(0));
1294 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1296 LASSERT(work_area, /**/);
1297 int index = indexOf(work_area);
1301 if (index == currentIndex())
1302 // Make sure the work area is up to date.
1303 on_currentTabChanged(index);
1305 // Switch to the work area.
1306 setCurrentIndex(index);
1307 work_area->setFocus();
1313 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1315 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1316 wa->setUpdatesEnabled(false);
1317 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1318 // when hiding it again below).
1319 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1320 showBar(count() > 0);
1321 addTab(wa, wa->windowTitle());
1322 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1323 this, SLOT(updateTabTexts()));
1324 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1325 setFullScreen(true);
1327 // Hide tabbar if there's only one tab.
1328 showBar(count() > 1);
1336 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1338 LASSERT(work_area, return false);
1339 int index = indexOf(work_area);
1343 work_area->setUpdatesEnabled(false);
1348 // make sure the next work area is enabled.
1349 currentWidget()->setUpdatesEnabled(true);
1350 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1351 setFullScreen(true);
1353 // Hide tabbar if there's only one tab.
1354 showBar(count() > 1);
1356 lastWorkAreaRemoved();
1365 void TabWorkArea::on_currentTabChanged(int i)
1367 // returns e.g. on application destruction
1370 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(i));
1371 LASSERT(wa, return);
1372 BufferView & bv = wa->bufferView();
1373 bv.cursor().fixIfBroken();
1375 wa->setUpdatesEnabled(true);
1379 currentWorkAreaChanged(wa);
1381 LYXERR(Debug::GUI, "currentTabChanged " << i
1382 << "File" << bv.buffer().absFileName());
1386 void TabWorkArea::closeCurrentBuffer()
1388 if (clicked_tab_ != -1)
1389 setCurrentIndex(clicked_tab_);
1391 lyx::dispatch(FuncRequest(LFUN_BUFFER_CLOSE));
1395 void TabWorkArea::closeCurrentTab()
1397 if (clicked_tab_ == -1)
1398 removeWorkArea(currentWorkArea());
1400 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(clicked_tab_));
1409 /// make vector happy
1412 DisplayPath(int tab, FileName const & filename)
1415 filename_ = toqstr(filename.onlyFileNameWithoutExt());
1416 postfix_ = toqstr(filename.absoluteFilePath()).
1417 split("/", QString::SkipEmptyParts);
1418 postfix_.pop_back();
1419 abs_ = toqstr(filename.absoluteFilePath());
1420 dottedPrefix_ = false;
1423 /// Absolute path for debugging.
1428 /// Add the first segment from the postfix or three dots to the prefix.
1429 /// Merge multiple dot tripples. In fact dots are added lazily, i.e. only
1430 /// when really needed.
1431 void shiftPathSegment(bool dotted)
1433 if (postfix_.count() <= 0)
1437 if (dottedPrefix_ && !prefix_.isEmpty())
1439 prefix_ += postfix_.front() + "/";
1441 dottedPrefix_ = dotted && !prefix_.isEmpty();
1442 postfix_.pop_front();
1445 QString displayString() const
1447 if (prefix_.isEmpty())
1450 bool dots = dottedPrefix_ || !postfix_.isEmpty();
1451 return prefix_ + (dots ? ".../" : "") + filename_;
1454 QString forecastPathString() const
1456 if (postfix_.count() == 0)
1457 return displayString();
1460 + (dottedPrefix_ ? ".../" : "")
1461 + postfix_.front() + "/";
1464 bool final() const { return postfix_.empty(); }
1466 int tab() const { return tab_; }
1472 QStringList postfix_;
1485 bool operator<(DisplayPath const & a, DisplayPath const & b)
1487 return a.displayString() < b.displayString();
1491 bool operator==(DisplayPath const & a, DisplayPath const & b)
1493 return a.displayString() == b.displayString();
1497 void TabWorkArea::updateTabTexts()
1502 std::list<DisplayPath> paths;
1503 typedef std::list<DisplayPath>::iterator It;
1505 // collect full names first: path into postfix, empty prefix and
1506 // filename without extension
1507 for (size_t i = 0; i < n; ++i) {
1508 GuiWorkArea * i_wa = dynamic_cast<GuiWorkArea *>(widget(i));
1509 FileName const fn = i_wa->bufferView().buffer().fileName();
1510 paths.push_back(DisplayPath(i, fn));
1513 // go through path segments and see if it helps to make the path more unique
1514 bool somethingChanged = true;
1515 bool allFinal = false;
1516 while (somethingChanged && !allFinal) {
1517 // adding path segments changes order
1520 LYXERR(Debug::GUI, "updateTabTexts() iteration start");
1521 somethingChanged = false;
1524 // find segments which are not unique (i.e. non-atomic)
1525 It it = paths.begin();
1527 QString segString = it->displayString();
1528 for (; it != paths.end(); ++it) {
1529 // look to the next item
1534 allFinal = allFinal && it->final();
1536 LYXERR(Debug::GUI, "it = " << it->abs()
1537 << " => " << it->displayString());
1539 // still the same segment?
1541 if ((next != paths.end()
1542 && (nextString = next->displayString()) == segString))
1544 LYXERR(Debug::GUI, "segment ended");
1546 // only a trivial one with one element?
1547 if (it == segStart) {
1548 // start new segment
1550 segString = nextString;
1554 // we found a non-atomic segment segStart <= sit <= it < next.
1555 // Shift path segments and hope for the best
1556 // that it makes the path more unique.
1557 somethingChanged = true;
1559 QString dspString = sit->forecastPathString();
1560 LYXERR(Debug::GUI, "first forecast found for "
1561 << sit->abs() << " => " << dspString);
1563 bool moreUnique = false;
1564 for (; sit != next; ++sit) {
1565 if (sit->forecastPathString() != dspString) {
1566 LYXERR(Debug::GUI, "different forecast found for "
1567 << sit->abs() << " => " << sit->forecastPathString());
1571 LYXERR(Debug::GUI, "same forecast found for "
1572 << sit->abs() << " => " << dspString);
1575 // if the path segment helped, add it. Otherwise add dots
1576 bool dots = !moreUnique;
1577 LYXERR(Debug::GUI, "using dots = " << dots);
1578 for (sit = segStart; sit != next; ++sit) {
1579 sit->shiftPathSegment(dots);
1580 LYXERR(Debug::GUI, "shifting "
1581 << sit->abs() << " => " << sit->displayString());
1584 // start new segment
1586 segString = nextString;
1590 // set new tab titles
1591 for (It it = paths.begin(); it != paths.end(); ++it) {
1592 GuiWorkArea * i_wa = dynamic_cast<GuiWorkArea *>(widget(it->tab()));
1593 Buffer & buf = i_wa->bufferView().buffer();
1594 if (!buf.fileName().empty() && !buf.isClean())
1595 setTabText(it->tab(), it->displayString() + "*");
1597 setTabText(it->tab(), it->displayString());
1602 void TabWorkArea::showContextMenu(const QPoint & pos)
1605 clicked_tab_ = static_cast<DragTabBar *>(tabBar())->tabAt(pos);
1606 if (clicked_tab_ == -1)
1611 popup.addAction(QIcon(":/images/hidetab.png"),
1612 qt_("Hide tab"), this, SLOT(closeCurrentTab()));
1613 popup.addAction(QIcon(":/images/closetab.png"),
1614 qt_("Close tab"), this, SLOT(closeCurrentBuffer()));
1615 popup.exec(tabBar()->mapToGlobal(pos));
1621 void TabWorkArea::moveTab(int fromIndex, int toIndex)
1623 QWidget * w = widget(fromIndex);
1624 QIcon icon = tabIcon(fromIndex);
1625 QString text = tabText(fromIndex);
1627 setCurrentIndex(fromIndex);
1628 removeTab(fromIndex);
1629 insertTab(toIndex, w, icon, text);
1630 setCurrentIndex(toIndex);
1634 DragTabBar::DragTabBar(QWidget* parent)
1637 setAcceptDrops(true);
1641 #if QT_VERSION < 0x040300
1642 int DragTabBar::tabAt(QPoint const & position) const
1644 const int max = count();
1645 for (int i = 0; i < max; ++i) {
1646 if (tabRect(i).contains(position))
1654 void DragTabBar::mousePressEvent(QMouseEvent * event)
1656 if (event->button() == Qt::LeftButton)
1657 dragStartPos_ = event->pos();
1658 QTabBar::mousePressEvent(event);
1662 void DragTabBar::mouseMoveEvent(QMouseEvent * event)
1664 // If the left button isn't pressed anymore then return
1665 if (!(event->buttons() & Qt::LeftButton))
1668 // If the distance is too small then return
1669 if ((event->pos() - dragStartPos_).manhattanLength()
1670 < QApplication::startDragDistance())
1673 // did we hit something after all?
1674 int tab = tabAt(dragStartPos_);
1678 // simulate button release to remove highlight from button
1679 int i = currentIndex();
1680 QMouseEvent me(QEvent::MouseButtonRelease, dragStartPos_,
1681 event->button(), event->buttons(), 0);
1682 QTabBar::mouseReleaseEvent(&me);
1686 QDrag * drag = new QDrag(this);
1687 QMimeData * mimeData = new QMimeData;
1688 // a crude way to distinguish tab-reodering drops from other ones
1689 mimeData->setData("action", "tab-reordering") ;
1690 drag->setMimeData(mimeData);
1692 #if QT_VERSION >= 0x040300
1693 // get tab pixmap as cursor
1694 QRect r = tabRect(tab);
1695 QPixmap pixmap(r.size());
1696 render(&pixmap, - r.topLeft());
1697 drag->setPixmap(pixmap);
1700 drag->start(Qt::MoveAction);
1706 void DragTabBar::dragEnterEvent(QDragEnterEvent * event)
1708 // Only accept if it's an tab-reordering request
1709 QMimeData const * m = event->mimeData();
1710 QStringList formats = m->formats();
1711 if (formats.contains("action")
1712 && m->data("action") == "tab-reordering")
1713 event->acceptProposedAction();
1717 void DragTabBar::dropEvent(QDropEvent * event)
1719 int fromIndex = tabAt(dragStartPos_);
1720 int toIndex = tabAt(event->pos());
1722 // Tell interested objects that
1723 if (fromIndex != toIndex)
1724 tabMoveRequested(fromIndex, toIndex);
1725 event->acceptProposedAction();
1729 } // namespace frontend
1732 #include "GuiWorkArea_moc.cpp"