C++ QWidget::isHidden方法代码示例

void StatusBarLayout::setGeometry( const QRect& _rect )
{
    QLayout::setGeometry( _rect );

    if( mIsDirty )
        updateLayoutStructs();

    QRect rect( 0, 0, _rect.width(), _rect.height() );

    const int margin = 0;//this->margin();
    const int spacing = this->spacing();

    int availableWidth =        rect.size().width()  - 2*margin;
    const int availableHeight = rect.size().height() - 2*margin;

    int usedWidth = 0;
    int visibleCount = 0;
    int i;
    for( i = 0; i<mWidgetList.count(); ++i )
    {
        QWidgetItem* item = mWidgetList.at( i );
        QWidget* widget = item->widget();

        // TODO: is there really no way to get to the geometry data if a widget is hidden?
        if( widget->isHidden() )
            widget->show();

        const int itemWidth = item->sizeHint().width();
        const int itemSpacing = ( visibleCount == 0 ) ? 0 : spacing;
        const int newUsedWidth = usedWidth + itemSpacing + itemWidth;
// kDebug()<<widget<<<<availableWidth<<usedWidth<<itemWidth<<itemSpacing<<newUsedWidth;

        const bool isTooWide = ( newUsedWidth > availableWidth );

        if( isTooWide )
            break;

        const QPoint pos( margin + usedWidth, margin );
        const QSize size( itemWidth, availableHeight );
        QRect r( pos, size );

        r = QStyle::visualRect( parentWidget()->layoutDirection(), rect, r );

        item->setGeometry( r );

        usedWidth = newUsedWidth;

        ++visibleCount;
    }
    // hide the rest if needed
    for( ; i<mWidgetList.count(); ++i )
    {
        QWidgetItem* item = mWidgetList.at( i );
        QWidget* widget = item->widget();

        if( ! widget->isHidden() )
            widget->hide();
    }
}

/*! \reimp */
int QAccessibleWidget::childAt(int x, int y) const
{
    QWidget *w = widget();
    if (!w->isVisible())
        return -1;
    QPoint gp = w->mapToGlobal(QPoint(0, 0));
    if (!QRect(gp.x(), gp.y(), w->width(), w->height()).contains(x, y))
        return -1;

    QWidgetList list = childWidgets(w);
    int ccount = childCount();

    // a complex child
    if (list.size() < ccount) {
        for (int i = 1; i <= ccount; ++i) {
            if (rect(i).contains(x, y))
                return i;
        }
        return 0;
    }

    QPoint rp = w->mapFromGlobal(QPoint(x, y));
    for (int i = 0; i<list.size(); ++i) {
        QWidget *child = list.at(i);
        if (!child->isWindow() && !child->isHidden() && child->geometry().contains(rp)) {
            return i + 1;
        }
    }
    return 0;
}

void QSplitter::childEvent(QChildEvent *c)
{
    Q_D(QSplitter);
    if (!c->child()->isWidgetType()) {
        if (c->type() == QEvent::ChildAdded && qobject_cast<QLayout *>(c->child()))
            qWarning("Adding a QLayout to a QSplitter is not supported.");
        return;
    }
    QWidget *w = static_cast<QWidget*>(c->child());
    if (c->added() && !d->blockChildAdd && !w->isWindow() && !d->findWidget(w)) {
        d->insertWidget_helper(d->list.count(), w, false);
    } else if (c->polished() && !d->blockChildAdd) {
        if (isVisible() && !(w->isHidden() && w->testAttribute(Qt::WA_WState_ExplicitShowHide)))
            w->show();
    } else if (c->type() == QEvent::ChildRemoved) {
        for (int i = 0; i < d->list.size(); ++i) {
            QSplitterLayoutStruct *s = d->list.at(i);
            if (s->widget == w) {
                d->list.removeAt(i);
                delete s;
                d->recalc(isVisible());
                return;
            }
        }
    }
}

void TabWidget::setCurrentIndex(int tabIndex)
{
    QWidget *w = currentWidget();
    const int current = (isTreeModeEnabled() && w != NULL && w->isHidden()) ? -1 : currentIndex();

    if (tabIndex == current)
        return;

    if (tabIndex != -1) {
        m_stackedWidget->setCurrentIndex(tabIndex);

        w = currentWidget();
        if (w == NULL)
            return;

        w->show();
        if (isTreeModeEnabled() ? m_tabTree->hasFocus() : m_tabBar->hasFocus())
            w->setFocus();

        if ( isTreeModeEnabled() )
            m_tabTree->setCurrentTabIndex(tabIndex);
        else
            m_tabBar->setCurrentIndex(tabIndex);
    } else if (w != NULL) {
        if (w->hasFocus())
            isTreeModeEnabled() ? m_tabTree->setFocus() : m_tabBar->setFocus();
        w->hide();
    }

    emit currentChanged(tabIndex, current);
}

void QSplitter::moveAfter( int pos, int id, bool upLeft )
{
    QSplitterLayoutStruct *s = id < int(data->list.count()) ?
			       data->list.at(id) : 0;
    if ( !s )
	return;
    QWidget *w = s->wid;
    if ( w->isHidden() ) {
	moveAfter( pos, id+1, upLeft );
    } else if ( pick( w->pos() ) == pos ) {
	//No need to do anything if it's already there.
	return;
    } else if ( s->isSplitter ) {
	int dd = s->sizer;
	if ( upLeft ) {
	    setG( w, pos, dd );
	    moveAfter( pos+dd, id+1, upLeft );
	} else {
	    moveAfter( pos+dd, id+1, upLeft );
	    setG( w, pos, dd );
	}
    } else {
	int right = pick( w->geometry().bottomRight() );

       	int dd = right - pos + 1;
	dd = QMAX( pick(minSize(w)), QMIN(dd, pick(w->maximumSize())));
	int newRight = pos+dd-1;
	setG( w, pos, dd );
	moveAfter( newRight+1, id+1, upLeft );
    }
}

void QSplitterPrivate::doMove(bool backwards, int hPos, int index, int delta, bool mayCollapse,
                              int *positions, int *widths)
{
    if (index < 0 || index >= list.count())
        return;

#ifdef QSPLITTER_DEBUG
    qDebug() << "QSplitterPrivate::doMove" << backwards << hPos << index << delta << mayCollapse;
#endif

    QSplitterLayoutStruct *s = list.at(index);
    QWidget *w = s->widget;

    int nextId = backwards ? index - delta : index + delta;

    if (w->isHidden()) {
        doMove(backwards, hPos, nextId, delta, collapsible(nextId), positions, widths);
    } else {
        int hs =s->handle->isHidden() ? 0 : s->getHandleSize(orient);

        int  ws = backwards ? hPos - pick(s->rect.topLeft())
                 : pick(s->rect.bottomRight()) - hPos -hs + 1;
        if (ws > 0 || (!s->collapsed && !mayCollapse)) {
            ws = qMin(ws, pick(w->maximumSize()));
            ws = qMax(ws, pick(qSmartMinSize(w)));
        } else {
            ws = 0;
        }
        positions[index] = backwards ? hPos - ws : hPos + hs;
        widths[index] = ws;
        doMove(backwards, backwards ? hPos - ws - hs : hPos + hs + ws, nextId, delta,
               collapsible(nextId), positions, widths);
    }

}

void QSplitter::moveBefore( int pos, int id, bool upLeft )
{
    QSplitterLayoutStruct *s = data->list.at(id);
    if ( !s )
	return;
    QWidget *w = s->wid;
    if ( w->isHidden() ) {
	moveBefore( pos, id-1, upLeft );
    } else if ( s->isSplitter ) {
	int dd = s->sizer;
	if ( upLeft ) {
	    setG( w, pos-dd+1, dd );
	    moveBefore( pos-dd, id-1, upLeft );
	} else {
	    moveBefore( pos-dd, id-1, upLeft );
	    setG( w, pos-dd+1, dd );
	}
    } else {
	int left = pick( w->pos() );
	int dd = pos - left + 1;
	dd = QMAX( pick(minSize(w)), QMIN(dd, pick(w->maximumSize())));
	int newLeft = pos-dd+1;
	setG( w, newLeft, dd );
	if ( left != newLeft )
	    moveBefore( newLeft-1, id-1, upLeft );
    }
}

//===========================================================================
void DiffAnalystWindow::onCascade()
{
	// from QWorkspace.cpp
	const int xoffset = 13;
	const int yoffset = 23;
	const int width = 640;
	const int height = 480;
	int x = 0;
	int y = 0;

	m_pWs->cascade ();
	int numWnd = m_pWs->windowList ().count ();
	
	for (int i = 0; i < numWnd; ++i)
	{
		QWidget *pWnd = m_pWs->windowList ().at (i);

		if (!pWnd->isHidden ())
		{
			pWnd->showNormal ();
			pWnd->parentWidget ()->setGeometry (x, y, width, height);
			if ((y + yoffset + height) <= m_pWs->height ())
			{
				x += xoffset;
				y += yoffset;
			}
			else
			{
				x = 0;
				y = 0;
			}
		}
	}
}

bool QWidgetProto::isHidden() const
{
  QWidget *item = qscriptvalue_cast<QWidget*>(thisObject());
  if (item)
    return item->isHidden();
  return false;
}

void KompareSplitter::doMove( bool backwards, int pos, int id, int delta,
                        bool mayCollapse, int* positions, int* widths )
{
	QSplitterLayoutStruct *s;
	QWidget *w;
	for ( ; id >= 0 && id < (int)d->list.count();
			id = backwards ? id - delta : id + delta ) {
		s = d->list.at( id );
		w = s->wid;
		if ( w->isHidden() ) {
			mayCollapse = TRUE;
		} else {
			if ( s->isHandle ) {
				int dd = s->getSizer( orient );
				int nextPos = backwards ? pos - dd : pos + dd;
				positions[id] = pos;
				widths[id] = dd;
				pos = nextPos;
			} else {
				int dd = backwards ? pos - pick( topLeft(w) )
				                   : pick( bottomRight(w) ) - pos + 1;
				if ( dd > 0 || (!isCollapsed(w) && !mayCollapse) ) {
					dd = QMAX( pick(qSmartMinSize(w)),
					           QMIN(dd, pick(w->maximumSize())) );
				} else {
					dd = 0;
				}
				positions[id] = backwards ? pos - dd : pos;
				widths[id] = dd;
				pos = backwards ? pos - dd : pos + dd;
				mayCollapse = TRUE;
			}
		}
	}
}

void KompareSplitter::moveSplitter( QCOORD p, int id )
{
	QSplitterLayoutStruct *s = d->list.at( id );
	int farMin;
	int min;
	int max;
	int farMax;
	p = adjustPos( p, id, &farMin, &min, &max, &farMax );
	int oldP = pick( s->wid->pos() );
	int* poss = new int[d->list.count()];
	int* ws = new int[d->list.count()];
	QWidget *w = 0;
	bool upLeft;
	if ( QApplication::reverseLayout() && orient == Horizontal ) {
		int q = p + s->wid->width();
		doMove( FALSE, q, id - 1, -1, (p > max), poss, ws );
		doMove( TRUE, q, id, -1, (p < min), poss, ws );
		upLeft = (q > oldP);
	} else {
		doMove( FALSE, p, id, +1, (p > max), poss, ws );
		doMove( TRUE, p, id - 1, +1, (p < min), poss, ws );
		upLeft = (p < oldP);
	}
	if ( upLeft ) {
		int count = d->list.count();
		for ( int id = 0; id < count; ++id ) {
			w = d->list.at( id )->wid;
			if( !w->isHidden() )
				setGeo( w, poss[id], ws[id], TRUE );
		}
	} else {
		for ( int id = d->list.count() - 1; id >= 0; --id ) {
			w = d->list.at( id )->wid;
			if( !w->isHidden() )
				setGeo( w, poss[id], ws[id], TRUE );
		}
	}
	storeSizes();
}

void QToolBarAreaLayout::saveState(QDataStream &stream) const
{
    // save toolbar state
    stream << (uchar) ToolBarStateMarkerEx;

    int lineCount = 0;
    for (int i = 0; i < QInternal::DockCount; ++i)
        lineCount += docks[i].lines.count();

    stream << lineCount;

    for (int i = 0; i < QInternal::DockCount; ++i) {
        const QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            const QToolBarAreaLayoutLine &line = dock.lines.at(j);

            stream << i << line.toolBarItems.count();

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                const QToolBarAreaLayoutItem &item = line.toolBarItems.at(k);
                QWidget *widget = const_cast<QLayoutItem*>(item.widgetItem)->widget();
                QString objectName = widget->objectName();
                if (objectName.isEmpty()) {
                    qWarning("QMainWindow::saveState(): 'objectName' not set for QToolBar %p '%s'",
                                widget, widget->windowTitle().toLocal8Bit().constData());
                }
                stream << objectName;
                // we store information as:
                // 1st bit: 1 if shown
                // 2nd bit: 1 if orientation is vertical (default is horizontal)
                uchar shownOrientation = (uchar)!widget->isHidden();
                if (QToolBar * tb= qobject_cast<QToolBar*>(widget)) {
                    if (tb->orientation() == Qt::Vertical)
                        shownOrientation |= 2;
                }
                stream << shownOrientation;
                stream << item.pos;
                //we store the preferred size. If the use rdidn't resize the toolbars it will be -1
                stream << item.preferredSize;

                uint geom0, geom1;
                packRect(&geom0, &geom1, widget->geometry(), widget->isWindow());
                stream << geom0 << geom1;
            }
        }
    }
}

int QSplitterPrivate::findWidgetJustBeforeOrJustAfter(int index, int delta, int &collapsibleSize) const
{
    if (delta < 0)
        index += delta;
    do {
        QWidget *w = list.at(index)->widget;
        if (!w->isHidden()) {
            if (collapsible(list.at(index)))
                collapsibleSize = pick(qSmartMinSize(w));
            return index;
        }
        index += delta;
    } while (index >= 0 && index < list.count());

    return -1;
}

/*!
    \reimp
*/
QSize QSplitter::sizeHint() const
{
    Q_D(const QSplitter);
    ensurePolished();
    int l = 0;
    int t = 0;
    for (int i = 0; i < d->list.size(); ++i) {
        QWidget *w = d->list.at(i)->widget;
        if (w->isHidden())
            continue;
        QSize s = w->sizeHint();
        if (s.isValid()) {
            l += d->pick(s);
            t = qMax(t, d->trans(s));
        }
    }
    return orientation() == Qt::Horizontal ? QSize(l, t) : QSize(t, l);
}

void TerminalPlugin::showTerminal()
{
	QWidget* dock = w_->parentWidget();
	if ( NULL == dock )
		return;
	
	if ( dock->isHidden() ) {
		dock->show();
		w_->setFocus();
	}
	else {
		dock->hide();

		// return focus to current document
		Juff::Document* doc = api()->currentDocument();
		if ( !doc->isNull() )
			api()->openDoc(doc->fileName());
	}
}