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 "GuiKeySymbol.h"
25 #include "GuiPainter.h"
26 #include "GuiPopupMenu.h"
28 #include "KeySymbol.h"
32 #include "MetricsInfo.h"
33 #include "qt_helpers.h"
36 #include "graphics/GraphicsImage.h"
37 #include "graphics/GraphicsLoader.h"
39 #include "support/debug.h"
40 #include "support/gettext.h"
41 #include "support/FileName.h"
43 #include "frontends/Application.h"
44 #include "frontends/FontMetrics.h"
45 #include "frontends/WorkAreaManager.h"
47 #include <QContextMenuEvent>
48 #include <QInputContext>
50 #include <QMainWindow>
56 #include <QToolButton>
59 #include <boost/bind.hpp>
63 extern "C" int XEventsQueued(Display *display, int mode);
67 int const CursorWidth = 2;
69 int const CursorWidth = 1;
76 using namespace lyx::support;
81 /// return the LyX mouse button state from Qt's
82 static mouse_button::state q_button_state(Qt::MouseButton button)
84 mouse_button::state b = mouse_button::none;
87 b = mouse_button::button1;
90 b = mouse_button::button2;
93 b = mouse_button::button3;
102 /// return the LyX mouse button state from Qt's
103 mouse_button::state q_motion_state(Qt::MouseButtons state)
105 mouse_button::state b = mouse_button::none;
106 if (state & Qt::LeftButton)
107 b |= mouse_button::button1;
108 if (state & Qt::MidButton)
109 b |= mouse_button::button2;
110 if (state & Qt::RightButton)
111 b |= mouse_button::button3;
122 void draw(QPainter & painter)
124 if (show_ && rect_.isValid()) {
127 painter.fillRect(rect_.x(), rect_.y(), CursorWidth, rect_.height(), color_);
128 painter.setPen(color_);
129 painter.drawLine(rect_.bottomLeft().x() + CursorWidth, rect_.bottomLeft().y(),
130 rect_.bottomRight().x(), rect_.bottomLeft().y());
133 case REVERSED_L_SHAPE:
134 painter.fillRect(rect_.x() + rect_.height() / 3, rect_.y(), CursorWidth, rect_.height(), color_);
135 painter.setPen(color_);
136 painter.drawLine(rect_.bottomRight().x() - CursorWidth, rect_.bottomLeft().y(),
137 rect_.bottomLeft().x(), rect_.bottomLeft().y());
141 painter.fillRect(rect_, color_);
147 void update(int x, int y, int h, CursorShape shape)
149 color_ = guiApp->colorCache().get(Color_cursor);
153 rect_ = QRect(x, y, CursorWidth + h / 3, h);
155 case REVERSED_L_SHAPE:
156 rect_ = QRect(x - h / 3, y, CursorWidth + h / 3, h);
159 rect_ = QRect(x, y, CursorWidth, h);
164 void show(bool set_show = true) { show_ = set_show; }
165 void hide() { show_ = false; }
167 QRect const & rect() { return rect_; }
181 // This is a 'heartbeat' generating synthetic mouse move events when the
182 // cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
183 SyntheticMouseEvent::SyntheticMouseEvent()
184 : timeout(200), restart_timeout(true),
185 x_old(-1), y_old(-1), scrollbar_value_old(-1.0)
190 GuiWorkArea::GuiWorkArea(Buffer & buffer, GuiView & lv)
191 : buffer_view_(new BufferView(buffer)), lyx_view_(&lv),
192 cursor_visible_(false),
193 need_resize_(false), schedule_redraw_(false),
194 preedit_lines_(1), completer_(this)
196 buffer.workAreaManager().add(this);
198 connect(&cursor_timeout_, SIGNAL(timeout()),
199 this, SLOT(toggleCursor()));
201 int const time = QApplication::cursorFlashTime() / 2;
203 cursor_timeout_.setInterval(time);
204 cursor_timeout_.start();
206 // let's initialize this just to be safe
207 cursor_timeout_.setInterval(500);
209 screen_ = QPixmap(viewport()->width(), viewport()->height());
210 cursor_ = new frontend::CursorWidget();
213 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
214 setAcceptDrops(true);
215 setMouseTracking(true);
216 setMinimumSize(100, 70);
219 viewport()->setAutoFillBackground(false);
220 // We don't need double-buffering nor SystemBackground on
221 // the viewport because we have our own backing pixmap.
222 viewport()->setAttribute(Qt::WA_NoSystemBackground);
224 setFocusPolicy(Qt::WheelFocus);
226 viewport()->setCursor(Qt::IBeamCursor);
228 synthetic_mouse_event_.timeout.timeout.connect(
229 boost::bind(&GuiWorkArea::generateSyntheticMouseEvent,
232 // Initialize the vertical Scroll Bar
233 QObject::connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
234 this, SLOT(scrollTo(int)));
236 LYXERR(Debug::GUI, "viewport width: " << viewport()->width()
237 << " viewport height: " << viewport()->height());
239 // Enables input methods for asian languages.
240 // Must be set when creating custom text editing widgets.
241 setAttribute(Qt::WA_InputMethodEnabled, true);
245 GuiWorkArea::~GuiWorkArea()
247 buffer_view_->buffer().workAreaManager().remove(this);
253 void GuiWorkArea::close()
255 lyx_view_->removeWorkArea(this);
259 void GuiWorkArea::setFullScreen(bool full_screen)
261 buffer_view_->setFullScreen(full_screen);
263 setFrameStyle(QFrame::NoFrame);
264 if (lyxrc.full_screen_scrollbar)
265 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
267 setFrameStyle(QFrame::Box);
268 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
273 BufferView & GuiWorkArea::bufferView()
275 return *buffer_view_;
279 BufferView const & GuiWorkArea::bufferView() const
281 return *buffer_view_;
285 void GuiWorkArea::stopBlinkingCursor()
287 cursor_timeout_.stop();
292 void GuiWorkArea::startBlinkingCursor()
295 //we're not supposed to cache this value.
296 int const time = QApplication::cursorFlashTime() / 2;
299 cursor_timeout_.setInterval(time);
300 cursor_timeout_.start();
304 void GuiWorkArea::redraw()
307 // No need to redraw in this case.
310 // No need to do anything if this is the current view. The BufferView
311 // metrics are already up to date.
312 if (lyx_view_ != guiApp->currentView()
313 || lyx_view_->currentWorkArea() != this) {
314 // FIXME: it would be nice to optimize for the off-screen case.
315 buffer_view_->updateMetrics();
316 buffer_view_->cursor().fixIfBroken();
319 // update cursor position, because otherwise it has to wait until
320 // the blinking interval is over
321 if (cursor_visible_) {
326 LYXERR(Debug::WORKAREA, "WorkArea::redraw screen");
328 update(0, 0, viewport()->width(), viewport()->height());
330 /// \warning: scrollbar updating *must* be done after the BufferView is drawn
331 /// because \c BufferView::updateScrollbar() is called in \c BufferView::draw().
333 lyx_view_->updateStatusBar();
335 if (lyxerr.debugging(Debug::WORKAREA))
336 buffer_view_->coordCache().dump();
340 void GuiWorkArea::processKeySym(KeySymbol const & key, KeyModifier mod)
342 // In order to avoid bad surprise in the middle of an operation,
343 // we better stop the blinking cursor...
344 // the cursor gets restarted in GuiView::restartCursor()
345 stopBlinkingCursor();
347 theLyXFunc().setLyXView(lyx_view_);
348 theLyXFunc().processKeySym(key, mod);
353 void GuiWorkArea::dispatch(FuncRequest const & cmd0, KeyModifier mod)
356 if (cmd0.action == LFUN_FILE_OPEN) {
357 lyx_view_->dispatch(cmd0);
361 theLyXFunc().setLyXView(lyx_view_);
365 if (cmd0.action == LFUN_MOUSE_PRESS) {
366 if (mod == ShiftModifier)
367 cmd = FuncRequest(cmd0, "region-select");
368 else if (mod == ControlModifier)
369 cmd = FuncRequest(cmd0, "paragraph-select");
376 bool const notJustMovingTheMouse =
377 cmd.action != LFUN_MOUSE_MOTION || cmd.button() != mouse_button::none;
379 // In order to avoid bad surprise in the middle of an operation, we better stop
380 // the blinking cursor.
381 if (notJustMovingTheMouse)
382 stopBlinkingCursor();
384 buffer_view_->mouseEventDispatch(cmd);
386 // Skip these when selecting
387 if (cmd.action != LFUN_MOUSE_MOTION) {
388 completer_.updateVisibility(false, false);
389 lyx_view_->updateLayoutList();
390 lyx_view_->updateToolbars();
393 // GUI tweaks except with mouse motion with no button pressed.
394 if (notJustMovingTheMouse) {
395 // Slight hack: this is only called currently when we
396 // clicked somewhere, so we force through the display
397 // of the new status here.
398 lyx_view_->clearMessage();
400 // Show the cursor immediately after any operation
401 startBlinkingCursor();
406 void GuiWorkArea::resizeBufferView()
408 // WARNING: Please don't put any code that will trigger a repaint here!
409 // We are already inside a paint event.
410 lyx_view_->setBusy(true);
411 buffer_view_->resize(viewport()->width(), viewport()->height());
414 // Update scrollbars which might have changed due different
415 // BufferView dimension. This is especially important when the
416 // BufferView goes from zero-size to the real-size for the first time,
417 // as the scrollbar paramters are then set for the first time.
420 lyx_view_->updateLayoutList();
421 lyx_view_->setBusy(false);
422 need_resize_ = false;
426 void GuiWorkArea::showCursor()
431 CursorShape shape = BAR_SHAPE;
433 Font const & realfont = buffer_view_->cursor().real_current_font;
434 BufferParams const & bp = buffer_view_->buffer().params();
435 bool const samelang = realfont.language() == bp.language;
436 bool const isrtl = realfont.isVisibleRightToLeft();
438 if (!samelang || isrtl != bp.language->rightToLeft()) {
441 shape = REVERSED_L_SHAPE;
444 // The ERT language hack needs fixing up
445 if (realfont.language() == latex_language)
448 Font const font = buffer_view_->cursor().getFont();
449 FontMetrics const & fm = theFontMetrics(font);
450 int const asc = fm.maxAscent();
451 int const des = fm.maxDescent();
455 Cursor & cur = buffer_view_->cursor();
459 // if it doesn't touch the screen, don't try to show it
460 bool cursorInView = true;
461 if (y + h < 0 || y >= viewport()->height())
462 cursorInView = false;
464 // show cursor on screen
466 cursor_visible_ = true;
467 showCursor(x, y, h, shape);
472 void GuiWorkArea::hideCursor()
474 if (!cursor_visible_)
477 cursor_visible_ = false;
482 void GuiWorkArea::toggleCursor()
491 void GuiWorkArea::updateScrollbar()
493 ScrollbarParameters const & scroll_ = buffer_view_->scrollbarParameters();
495 verticalScrollBar()->setRange(scroll_.min, scroll_.max);
496 verticalScrollBar()->setPageStep(scroll_.page_step);
497 verticalScrollBar()->setSingleStep(scroll_.single_step);
498 // Block the scrollbar signal to prevent recursive signal/slot calling.
499 verticalScrollBar()->blockSignals(true);
500 verticalScrollBar()->setValue(scroll_.position);
501 verticalScrollBar()->setSliderPosition(scroll_.position);
502 verticalScrollBar()->blockSignals(false);
506 void GuiWorkArea::scrollTo(int value)
508 stopBlinkingCursor();
509 buffer_view_->scrollDocView(value);
511 if (lyxrc.cursor_follows_scrollbar) {
512 buffer_view_->setCursorFromScrollbar();
513 lyx_view_->updateLayoutList();
515 // Show the cursor immediately after any operation.
516 startBlinkingCursor();
517 QApplication::syncX();
521 bool GuiWorkArea::event(QEvent * e)
524 case QEvent::ToolTip: {
525 QHelpEvent * helpEvent = static_cast<QHelpEvent *>(e);
526 if (lyxrc.use_tooltip) {
527 QPoint pos = helpEvent->pos();
528 if (pos.x() < viewport()->width()) {
529 QString s = toqstr(buffer_view_->toolTip(pos.x(), pos.y()));
530 QToolTip::showText(helpEvent->globalPos(), s);
533 QToolTip::hideText();
535 // Don't forget to accept the event!
540 case QEvent::ShortcutOverride: {
541 // We catch this event in order to catch the Tab or Shift+Tab key press
542 // which are otherwise reserved to focus switching between controls
544 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
545 if ((ke->key() != Qt::Key_Tab && ke->key() != Qt::Key_Backtab)
546 || ke->modifiers() & Qt::ControlModifier)
547 return QAbstractScrollArea::event(e);
553 return QAbstractScrollArea::event(e);
559 void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
561 QPoint pos = e->pos();
562 docstring name = buffer_view_->contextMenu(pos.x(), pos.y());
564 QAbstractScrollArea::contextMenuEvent(e);
567 QMenu * menu = guiApp->menus().menu(toqstr(name));
569 QAbstractScrollArea::contextMenuEvent(e);
572 // Position the menu to the right.
573 // FIXME: menu position should be different for RTL text.
574 menu->exec(e->globalPos());
579 void GuiWorkArea::focusInEvent(QFocusEvent * e)
581 lyx_view_->setCurrentWorkArea(this);
582 // Repaint the whole screen.
583 // Note: this is different from redraw() as only the backing pixmap
584 // will be redrawn, which is cheap.
585 viewport()->repaint();
587 startBlinkingCursor();
588 QAbstractScrollArea::focusInEvent(e);
592 void GuiWorkArea::focusOutEvent(QFocusEvent * e)
594 stopBlinkingCursor();
595 QAbstractScrollArea::focusOutEvent(e);
599 void GuiWorkArea::mousePressEvent(QMouseEvent * e)
601 if (dc_event_.active && dc_event_ == *e) {
602 dc_event_.active = false;
603 FuncRequest cmd(LFUN_MOUSE_TRIPLE, e->x(), e->y(),
604 q_button_state(e->button()));
610 inputContext()->reset();
612 FuncRequest const cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
613 q_button_state(e->button()));
614 dispatch(cmd, q_key_state(e->modifiers()));
619 void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
621 if (synthetic_mouse_event_.timeout.running())
622 synthetic_mouse_event_.timeout.stop();
624 FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
625 q_button_state(e->button()));
631 void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
633 // we kill the triple click if we move
634 doubleClickTimeout();
635 FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
636 q_motion_state(e->buttons()));
640 // If we're above or below the work area...
641 if (e->y() <= 20 || e->y() >= viewport()->height() - 20) {
642 // Make sure only a synthetic event can cause a page scroll,
643 // so they come at a steady rate:
645 // _Force_ a scroll up:
648 cmd.y = viewport()->height();
649 // Store the event, to be handled when the timeout expires.
650 synthetic_mouse_event_.cmd = cmd;
652 if (synthetic_mouse_event_.timeout.running())
653 // Discard the event. Note that it _may_ be handled
654 // when the timeout expires if
655 // synthetic_mouse_event_.cmd has not been overwritten.
656 // Ie, when the timeout expires, we handle the
657 // most recent event but discard all others that
658 // occurred after the one used to start the timeout
659 // in the first place.
662 synthetic_mouse_event_.restart_timeout = true;
663 synthetic_mouse_event_.timeout.start();
664 // Fall through to handle this event...
666 } else if (synthetic_mouse_event_.timeout.running()) {
667 // Store the event, to be possibly handled when the timeout
669 // Once the timeout has expired, normal control is returned
670 // to mouseMoveEvent (restart_timeout = false).
671 // This results in a much smoother 'feel' when moving the
672 // mouse back into the work area.
673 synthetic_mouse_event_.cmd = cmd;
674 synthetic_mouse_event_.restart_timeout = false;
678 // Has anything changed on-screen since the last QMouseEvent
680 double const scrollbar_value = verticalScrollBar()->value();
681 if (e->x() == synthetic_mouse_event_.x_old
682 && e->y() == synthetic_mouse_event_.y_old
683 && scrollbar_value == synthetic_mouse_event_.scrollbar_value_old) {
684 // Nothing changed on-screen since the last QMouseEvent.
688 // Yes something has changed. Store the params used to check this.
689 synthetic_mouse_event_.x_old = e->x();
690 synthetic_mouse_event_.y_old = e->y();
691 synthetic_mouse_event_.scrollbar_value_old = scrollbar_value;
693 // ... and dispatch the event to the LyX core.
698 void GuiWorkArea::wheelEvent(QWheelEvent * e)
700 // Wheel rotation by one notch results in a delta() of 120 (see
701 // documentation of QWheelEvent)
702 double const lines = qApp->wheelScrollLines()
703 * lyxrc.mouse_wheel_speed
704 * e->delta() / 120.0;
705 LYXERR(Debug::SCROLLING, "wheelScrollLines = " << qApp->wheelScrollLines()
706 << " delta = " << e->delta()
707 << " lines = " << lines);
708 verticalScrollBar()->setValue(verticalScrollBar()->value() -
709 int(lines * verticalScrollBar()->singleStep()));
714 void GuiWorkArea::generateSyntheticMouseEvent()
716 // Set things off to generate the _next_ 'pseudo' event.
717 if (synthetic_mouse_event_.restart_timeout)
718 synthetic_mouse_event_.timeout.start();
720 // Has anything changed on-screen since the last timeout signal
722 double const scrollbar_value = verticalScrollBar()->value();
723 if (scrollbar_value != synthetic_mouse_event_.scrollbar_value_old) {
724 // Yes it has. Store the params used to check this.
725 synthetic_mouse_event_.scrollbar_value_old = scrollbar_value;
727 // ... and dispatch the event to the LyX core.
728 dispatch(synthetic_mouse_event_.cmd);
733 void GuiWorkArea::keyPressEvent(QKeyEvent * ev)
735 // intercept some keys if completion popup is visible
736 if (completer_.popupVisible()) {
740 completer_.activate();
746 // intercept keys for the completion
747 if (ev->key() == Qt::Key_Tab) {
753 if (completer_.popupVisible() && ev->key() == Qt::Key_Escape) {
754 completer_.hidePopup();
759 if (completer_.inlineVisible() && ev->key() == Qt::Key_Escape) {
760 completer_.hideInline();
765 // do nothing if there are other events
766 // (the auto repeated events come too fast)
767 // \todo FIXME: remove hard coded Qt keys, process the key binding
769 if (XEventsQueued(QX11Info::display(), 0) > 1 && ev->isAutoRepeat()
770 && (Qt::Key_PageDown || Qt::Key_PageUp)) {
771 LYXERR(Debug::KEY, "system is busy: scroll key event ignored");
777 LYXERR(Debug::KEY, " count: " << ev->count()
778 << " text: " << fromqstr(ev->text())
779 << " isAutoRepeat: " << ev->isAutoRepeat() << " key: " << ev->key());
782 setKeySymbol(&sym, ev);
783 processKeySym(sym, q_key_state(ev->modifiers()));
788 void GuiWorkArea::doubleClickTimeout()
790 dc_event_.active = false;
794 void GuiWorkArea::mouseDoubleClickEvent(QMouseEvent * ev)
796 dc_event_ = DoubleClick(ev);
797 QTimer::singleShot(QApplication::doubleClickInterval(), this,
798 SLOT(doubleClickTimeout()));
799 FuncRequest cmd(LFUN_MOUSE_DOUBLE,
801 q_button_state(ev->button()));
807 void GuiWorkArea::resizeEvent(QResizeEvent * ev)
809 QAbstractScrollArea::resizeEvent(ev);
815 void GuiWorkArea::update(int x, int y, int w, int h)
817 viewport()->repaint(x, y, w, h);
821 void GuiWorkArea::paintEvent(QPaintEvent * ev)
823 QRect const rc = ev->rect();
824 // LYXERR(Debug::PAINTING, "paintEvent begin: x: " << rc.x()
825 // << " y: " << rc.y() << " w: " << rc.width() << " h: " << rc.height());
828 screen_ = QPixmap(viewport()->width(), viewport()->height());
834 QPainter pain(viewport());
835 pain.drawPixmap(rc, screen_, rc);
841 void GuiWorkArea::updateScreen()
843 GuiPainter pain(&screen_);
844 buffer_view_->draw(pain);
848 void GuiWorkArea::showCursor(int x, int y, int h, CursorShape shape)
850 if (schedule_redraw_) {
851 buffer_view_->updateMetrics();
853 viewport()->update(QRect(0, 0, viewport()->width(), viewport()->height()));
854 schedule_redraw_ = false;
855 // Show the cursor immediately after the update.
861 cursor_->update(x, y, h, shape);
863 viewport()->update(cursor_->rect());
867 void GuiWorkArea::removeCursor()
870 //if (!qApp->focusWidget())
871 viewport()->update(cursor_->rect());
875 void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
877 QString const & commit_string = e->commitString();
878 docstring const & preedit_string
879 = qstring_to_ucs4(e->preeditString());
881 if (!commit_string.isEmpty()) {
883 LYXERR(Debug::KEY, "preeditString: " << fromqstr(e->preeditString())
884 << " commitString: " << fromqstr(e->commitString()));
888 // FIXME Iwami 04/01/07: we should take care also of UTF16 surrogates here.
889 for (int i = 0; i != commit_string.size(); ++i) {
890 QKeyEvent ev(QEvent::KeyPress, key, Qt::NoModifier, commit_string[i]);
895 // Hide the cursor during the kana-kanji transformation.
896 if (preedit_string.empty())
897 startBlinkingCursor();
899 stopBlinkingCursor();
901 // last_width : for checking if last preedit string was/wasn't empty.
902 static bool last_width = false;
903 if (!last_width && preedit_string.empty()) {
904 // if last_width is last length of preedit string.
909 GuiPainter pain(&screen_);
910 buffer_view_->updateMetrics();
911 buffer_view_->draw(pain);
912 FontInfo font = buffer_view_->cursor().getFont().fontInfo();
913 FontMetrics const & fm = theFontMetrics(font);
914 int height = fm.maxHeight();
915 int cur_x = cursor_->rect().left();
916 int cur_y = cursor_->rect().bottom();
918 // redraw area of preedit string.
919 update(0, cur_y - height, viewport()->width(),
920 (height + 1) * preedit_lines_);
922 if (preedit_string.empty()) {
930 // att : stores an IM attribute.
931 QList<QInputMethodEvent::Attribute> const & att = e->attributes();
933 // get attributes of input method cursor.
934 // cursor_pos : cursor position in preedit string.
935 size_t cursor_pos = 0;
936 bool cursor_is_visible = false;
937 for (int i = 0; i != att.size(); ++i) {
938 if (att.at(i).type == QInputMethodEvent::Cursor) {
939 cursor_pos = att.at(i).start;
940 cursor_is_visible = att.at(i).length != 0;
945 size_t preedit_length = preedit_string.length();
947 // get position of selection in input method.
948 // FIXME: isn't there a way to do this simplier?
949 // rStart : cursor position in selected string in IM.
951 // rLength : selected string length in IM.
953 if (cursor_pos < preedit_length) {
954 for (int i = 0; i != att.size(); ++i) {
955 if (att.at(i).type == QInputMethodEvent::TextFormat) {
956 if (att.at(i).start <= int(cursor_pos)
957 && int(cursor_pos) < att.at(i).start + att.at(i).length) {
958 rStart = att.at(i).start;
959 rLength = att.at(i).length;
960 if (!cursor_is_visible)
961 cursor_pos += rLength;
972 int const right_margin = buffer_view_->rightMargin();
973 Painter::preedit_style ps;
974 // Most often there would be only one line:
976 for (size_t pos = 0; pos != preedit_length; ++pos) {
977 char_type const typed_char = preedit_string[pos];
978 // reset preedit string style
979 ps = Painter::preedit_default;
981 // if we reached the right extremity of the screen, go to next line.
982 if (cur_x + fm.width(typed_char) > viewport()->width() - right_margin) {
983 cur_x = right_margin;
987 // preedit strings are displayed with dashed underline
988 // and partial strings are displayed white on black indicating
989 // that we are in selecting mode in the input method.
990 // FIXME: rLength == preedit_length is not a changing condition
991 // FIXME: should be put out of the loop.
993 && pos < rStart + rLength
994 && !(cursor_pos < rLength && rLength == preedit_length))
995 ps = Painter::preedit_selecting;
997 if (pos == cursor_pos
998 && (cursor_pos < rLength && rLength == preedit_length))
999 ps = Painter::preedit_cursor;
1001 // draw one character and update cur_x.
1002 cur_x += pain.preeditText(cur_x, cur_y, typed_char, font, ps);
1005 // update the preedit string screen area.
1006 update(0, cur_y - preedit_lines_*height, viewport()->width(),
1007 (height + 1) * preedit_lines_);
1009 // Don't forget to accept the event!
1014 QVariant GuiWorkArea::inputMethodQuery(Qt::InputMethodQuery query) const
1016 QRect cur_r(0,0,0,0);
1018 // this is the CJK-specific composition window position.
1019 case Qt::ImMicroFocus:
1020 cur_r = cursor_->rect();
1021 if (preedit_lines_ != 1)
1023 cur_r.moveBottom(cur_r.bottom() + cur_r.height() * preedit_lines_);
1024 // return lower right of cursor in LyX.
1027 return QWidget::inputMethodQuery(query);
1032 void GuiWorkArea::updateWindowTitle()
1034 docstring maximize_title;
1035 docstring minimize_title;
1037 Buffer & buf = buffer_view_->buffer();
1038 FileName const fileName = buf.fileName();
1039 if (!fileName.empty()) {
1040 maximize_title = fileName.displayName(30);
1041 minimize_title = from_utf8(fileName.onlyFileName());
1042 if (!buf.isClean()) {
1043 maximize_title += _(" (changed)");
1044 minimize_title += char_type('*');
1046 if (buf.isReadonly())
1047 maximize_title += _(" (read only)");
1050 QString title = windowTitle();
1051 QString new_title = toqstr(maximize_title);
1052 if (title == new_title)
1055 QWidget::setWindowTitle(new_title);
1056 QWidget::setWindowIconText(toqstr(minimize_title));
1061 void GuiWorkArea::setReadOnly(bool)
1063 updateWindowTitle();
1064 if (this == lyx_view_->currentWorkArea())
1065 lyx_view_->updateBufferDependent(false);
1069 bool GuiWorkArea::isFullScreen()
1071 return lyx_view_ && lyx_view_->isFullScreen();
1075 ////////////////////////////////////////////////////////////////////
1079 ////////////////////////////////////////////////////////////////////
1081 TabWorkArea::TabWorkArea(QWidget * parent) : QTabWidget(parent)
1083 QPalette pal = palette();
1084 pal.setColor(QPalette::Active, QPalette::Button,
1085 pal.color(QPalette::Active, QPalette::Window));
1086 pal.setColor(QPalette::Disabled, QPalette::Button,
1087 pal.color(QPalette::Disabled, QPalette::Window));
1088 pal.setColor(QPalette::Inactive, QPalette::Button,
1089 pal.color(QPalette::Inactive, QPalette::Window));
1091 QObject::connect(this, SIGNAL(currentChanged(int)),
1092 this, SLOT(on_currentTabChanged(int)));
1094 QToolButton * closeBufferButton = new QToolButton(this);
1095 closeBufferButton->setPalette(pal);
1096 // FIXME: rename the icon to closebuffer.png
1097 closeBufferButton->setIcon(QIcon(":/images/closetab.png"));
1098 closeBufferButton->setText("Close File");
1099 closeBufferButton->setAutoRaise(true);
1100 closeBufferButton->setCursor(Qt::ArrowCursor);
1101 closeBufferButton->setToolTip(qt_("Close File"));
1102 closeBufferButton->setEnabled(true);
1103 QObject::connect(closeBufferButton, SIGNAL(clicked()),
1104 this, SLOT(closeCurrentBuffer()));
1105 setCornerWidget(closeBufferButton, Qt::TopRightCorner);
1107 QToolButton * closeTabButton = new QToolButton(this);
1108 closeTabButton->setPalette(pal);
1109 closeTabButton->setIcon(QIcon(":/images/hidetab.png"));
1110 closeTabButton->setText("Hide tab");
1111 closeTabButton->setAutoRaise(true);
1112 closeTabButton->setCursor(Qt::ArrowCursor);
1113 closeTabButton->setToolTip(qt_("Hide tab"));
1114 closeTabButton->setEnabled(true);
1115 QObject::connect(closeTabButton, SIGNAL(clicked()),
1116 this, SLOT(closeCurrentTab()));
1117 setCornerWidget(closeTabButton, Qt::TopLeftCorner);
1119 setUsesScrollButtons(true);
1123 void TabWorkArea::setFullScreen(bool full_screen)
1125 for (int i = 0; i != count(); ++i) {
1126 if (GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(i)))
1127 wa->setFullScreen(full_screen);
1130 if (lyxrc.full_screen_tabbar)
1131 showBar(!full_screen && count()>1);
1135 void TabWorkArea::showBar(bool show)
1137 tabBar()->setEnabled(show);
1138 tabBar()->setVisible(show);
1142 GuiWorkArea * TabWorkArea::currentWorkArea()
1147 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(currentWidget());
1153 GuiWorkArea * TabWorkArea::workArea(Buffer & buffer)
1155 for (int i = 0; i != count(); ++i) {
1156 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(i));
1158 if (&wa->bufferView().buffer() == &buffer)
1165 void TabWorkArea::closeAll()
1168 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(0));
1176 bool TabWorkArea::setCurrentWorkArea(GuiWorkArea * work_area)
1178 BOOST_ASSERT(work_area);
1179 int index = indexOf(work_area);
1183 if (index == currentIndex())
1184 // Make sure the work area is up to date.
1185 on_currentTabChanged(index);
1187 // Switch to the work area.
1188 setCurrentIndex(index);
1189 work_area->setFocus();
1195 GuiWorkArea * TabWorkArea::addWorkArea(Buffer & buffer, GuiView & view)
1197 GuiWorkArea * wa = new GuiWorkArea(buffer, view);
1198 wa->setUpdatesEnabled(false);
1199 // Hide tabbar if there's no tab (avoid a resize and a flashing tabbar
1200 // when hiding it again below).
1201 if (!(currentWorkArea() && currentWorkArea()->isFullScreen()))
1202 showBar(count() > 0);
1203 addTab(wa, wa->windowTitle());
1204 QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
1205 this, SLOT(updateTabText(GuiWorkArea *)));
1206 if (currentWorkArea() && currentWorkArea()->isFullScreen())
1207 setFullScreen(true);
1209 // Hide tabbar if there's only one tab.
1210 showBar(count() > 1);
1216 bool TabWorkArea::removeWorkArea(GuiWorkArea * work_area)
1218 BOOST_ASSERT(work_area);
1219 int index = indexOf(work_area);
1223 work_area->setUpdatesEnabled(false);
1228 // make sure the next work area is enabled.
1229 currentWidget()->setUpdatesEnabled(true);
1230 if ((currentWorkArea() && currentWorkArea()->isFullScreen()))
1231 setFullScreen(true);
1233 // Hide tabbar if there's only one tab.
1234 showBar(count() > 1);
1240 void TabWorkArea::on_currentTabChanged(int i)
1242 GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(widget(i));
1244 BufferView & bv = wa->bufferView();
1245 bv.cursor().fixIfBroken();
1247 wa->setUpdatesEnabled(true);
1251 currentWorkAreaChanged(wa);
1253 LYXERR(Debug::GUI, "currentTabChanged " << i
1254 << "File" << bv.buffer().absFileName());
1258 void TabWorkArea::closeCurrentBuffer()
1260 lyx::dispatch(FuncRequest(LFUN_BUFFER_CLOSE));
1264 void TabWorkArea::closeCurrentTab()
1266 removeWorkArea(currentWorkArea());
1270 void TabWorkArea::updateTabText(GuiWorkArea * wa)
1272 int const i = indexOf(wa);
1275 setTabText(i, wa->windowTitle());
1278 } // namespace frontend
1281 #include "GuiWorkArea_moc.cpp"