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/***************************************************************************
* Copyright (C) 2011 by Peter Penz <[email protected]> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
#ifndef KITEMLISTSIZEHINTRESOLVER_H
#define KITEMLISTSIZEHINTRESOLVER_H
#include "libdolphin_export.h"
#include <kitemviews/kitemmodelbase.h>
#include <QSizeF>
#include <QVector>
class KItemListView;
/**
* @brief Calculates and caches the sizehints of items in KItemListView.
*/
class LIBDOLPHINPRIVATE_EXPORT KItemListSizeHintResolver
{
public:
KItemListSizeHintResolver(const KItemListView* itemListView);
virtual ~KItemListSizeHintResolver();
QSizeF sizeHint(int index);
void itemsInserted(const KItemRangeList& itemRanges);
void itemsRemoved(const KItemRangeList& itemRanges);
void itemsMoved(const KItemRange& range, const QList<int>& movedToIndexes);
void itemsChanged(int index, int count, const QSet<QByteArray>& roles);
void clearCache();
void updateCache();
private:
const KItemListView* m_itemListView;
mutable QVector<qreal> m_logicalHeightHintCache;
mutable qreal m_logicalWidthHint;
bool m_needsResolving;
};
#endif
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