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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtQuick3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef THUMBNAILNODE_H
#define THUMBNAILNODE_H
#include "qglscenenode.h"
#include "thumbnailableimage.h"
#include <QtCore/qmath.h>
#include <QUrl>
class ThumbnailNode : public QGLSceneNode
{
Q_OBJECT
public:
enum Distance
{
Unknown,
Near,
Middle,
Far,
VeryFar
};
explicit ThumbnailNode(QObject *parent = 0);
~ThumbnailNode();
QUrl url() const { return m_url; }
void setUrl(const QUrl &url);
void setThreshold(qreal threshold) { m_thresholdSquared = threshold * threshold; }
qreal threshold() const { return qSqrt(m_thresholdSquared); }
void draw(QGLPainter *painter);
void drawGeometry(QGLPainter *painter);
ThumbnailableImage image() const { return m_image; }
signals:
void imageRequired(const ThumbnailableImage &);
void nodeChanged();
public slots:
void setImage(const ThumbnailableImage &image);
private:
void createFullNode();
void destroyFullNode();
void setupLoading();
void setupThumbnailing();
void loadFullImage();
ThumbnailableImage m_image;
qreal m_thresholdSquared;
int m_defaultMaterial;
QUrl m_url;
bool m_loading;
QGLSceneNode *m_full;
QSizeF m_max;
QObject *m_manager;
Distance m_lastDistance;
};
#endif // THUMBNAILNODE_H
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