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/****************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef CUSTOMITEM_H
#define CUSTOMITEM_H
//! [1]
#include <QQuickItem>
class CustomItem : public QQuickItem
{
Q_OBJECT
//! [2]
Q_PROPERTY(qreal zoom READ zoom WRITE setZoom NOTIFY zoomChanged)
Q_PROPERTY(int iterationLimit READ iterationLimit WRITE setIterationLimit NOTIFY iterationLimitChanged)
Q_PROPERTY(QPointF center READ center WRITE setCenter NOTIFY centerChanged)
//! [2]
QML_ELEMENT
public:
explicit CustomItem(QQuickItem *parent = 0);
qreal zoom() const
{
return m_zoom;
}
int iterationLimit() const
{
return m_limit;
}
QPointF center() const
{
return m_center;
}
public slots:
void setZoom(qreal zoom);
void setIterationLimit(int iterationLimit);
void setCenter(QPointF center);
signals:
void zoomChanged(qreal zoom);
void iterationLimitChanged(int iterationLimit);
void centerChanged(QPointF center);
protected:
QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) override;
void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override;
private:
bool m_geometryChanged = true;
qreal m_zoom;
bool m_zoomChanged = true;
int m_limit;
bool m_limitChanged = true;
QPointF m_center;
bool m_centerChanged = true;
};
//! [1]
#endif // CUSTOMITEM_H
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