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109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
/* This file is part of the KDE project
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Copyright (C) 2008 Rafael Fernández López <ereslibre@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef KFILEPLACESVIEW_P_H
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#define KFILEPLACESVIEW_P_H
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#include <QtGui/qevent.h>
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class KFilePlacesEventWatcher
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: public QObject
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{
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Q_OBJECT
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public:
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KFilePlacesEventWatcher(QObject *parent = 0)
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: QObject(parent) {}
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const QModelIndex &hoveredIndex() const
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{
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return m_hoveredIndex;
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}
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const QModelIndex &focusedIndex() const
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{
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return m_focusedIndex;
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}
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Q_SIGNALS:
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void entryEntered(const QModelIndex &index);
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void entryLeft(const QModelIndex &index);
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public Q_SLOTS:
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void currentIndexChanged(const QModelIndex &index)
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{
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if (m_focusedIndex.isValid() && m_focusedIndex != m_hoveredIndex) {
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emit entryLeft(m_focusedIndex);
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}
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if (index == m_hoveredIndex) {
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m_focusedIndex = m_hoveredIndex;
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return;
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}
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if (index.isValid()) {
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emit entryEntered(index);
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}
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m_focusedIndex = index;
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}
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protected:
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virtual bool eventFilter(QObject *watched, QEvent *event)
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{
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switch (event->type()) {
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case QEvent::MouseMove: {
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QAbstractItemView *view = qobject_cast<QAbstractItemView*>(watched->parent());
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const QModelIndex index = view->indexAt(static_cast<QMouseEvent*>(event)->pos());
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if (index != m_hoveredIndex) {
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if (m_hoveredIndex.isValid() && m_hoveredIndex != m_focusedIndex) {
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emit entryLeft(m_hoveredIndex);
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}
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if (index.isValid() && index != m_focusedIndex) {
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emit entryEntered(index);
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}
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m_hoveredIndex = index;
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}
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}
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break;
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case QEvent::Leave:
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if (m_hoveredIndex.isValid() && m_hoveredIndex != m_focusedIndex) {
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emit entryLeft(m_hoveredIndex);
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}
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m_hoveredIndex = QModelIndex();
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break;
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case QEvent::MouseButtonPress:
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case QEvent::MouseButtonDblClick: {
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// Prevent the selection clearing by clicking on the viewport directly
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QAbstractItemView *view = qobject_cast<QAbstractItemView*>(watched->parent());
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if (!view->indexAt(static_cast<QMouseEvent*>(event)->pos()).isValid()) {
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return true;
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}
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break;
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}
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default:
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return false;
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}
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return false;
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}
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private:
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QPersistentModelIndex m_hoveredIndex;
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QPersistentModelIndex m_focusedIndex;
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};
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#endif
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