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87 lines
3.1 KiB
C++
87 lines
3.1 KiB
C++
/***************************************************************************
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* Copyright 2009 by Aaron Seigo <aseigo@kde.org> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
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***************************************************************************/
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#include "selectionbar.h"
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#include <QGraphicsScene>
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#include <QtGui/qstyleoption.h>
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#include <QTimer>
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#include <KDebug>
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#include <Plasma/FrameSvg>
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#include "resultitem.h"
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SelectionBar::SelectionBar(QGraphicsWidget *parent)
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: Plasma::ItemBackground(parent),
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m_hideTimer(new QTimer(this))
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{
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// the hide timer is necessary because when calling QGraphicsScene::setFocusItem,
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// the selection is cleared first, then set. this causes acquireTarget to get called
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// multiple times, first with no selection. however, when the selection does go away
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// permanently, we do want to hide.
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m_hideTimer->setInterval(0);
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m_hideTimer->setSingleShot(true);
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connect(m_hideTimer, SIGNAL(timeout()), this, SLOT(actuallyHide()));
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}
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void SelectionBar::acquireTarget()
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{
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QList<QGraphicsItem *> selection = scene()->selectedItems();
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if (selection.isEmpty()) {
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m_hideTimer->start();
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return;
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}
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m_hideTimer->stop();
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//kDebug() << "showing an item!";
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setTargetItem(selection.first());
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setVisible(true);
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}
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void SelectionBar::actuallyHide()
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{
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hide();
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}
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QVariant SelectionBar::itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant &value)
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{
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switch (change) {
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case ItemSceneChange: {
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if (scene()) {
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disconnect(scene(), SIGNAL(selectionChanged()), this, SLOT(acquireTarget()));
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}
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QGraphicsScene *newScene = value.value<QGraphicsScene*>();
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if (newScene) {
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connect(newScene, SIGNAL(selectionChanged()), this, SLOT(acquireTarget()));
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}
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}
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break;
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default:
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break;
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}
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return QGraphicsWidget::itemChange(change, value);
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}
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#include "moc_selectionbar.cpp"
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