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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the tools applications 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.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QPainter>
#include <QtQuick/QQuickView>
#include <QApplication>
#include <QEasingCurve>
#include <QtQuick/QQuickPaintedItem>
class EasingPlot : public QQuickPaintedItem
{
Q_OBJECT
Q_PROPERTY(QEasingCurve easing READ easing WRITE setEasing NOTIFY easingChanged);
public:
EasingPlot();
QEasingCurve easing() const;
void setEasing(const QEasingCurve &);
signals:
void easingChanged();
protected:
virtual void paint(QPainter *painter);
private:
QEasingCurve m_easing;
};
EasingPlot::EasingPlot()
{
}
QEasingCurve EasingPlot::easing() const
{
return m_easing;
}
void EasingPlot::setEasing(const QEasingCurve &e)
{
if (m_easing == e)
return;
m_easing = e;
emit easingChanged();
update();
}
void EasingPlot::paint(QPainter *painter)
{
QPointF lastPoint(0, 0);
for (int ii = 1; ii <= 100; ++ii) {
qreal value = m_easing.valueForProgress(qreal(ii) / 100.);
QPointF currentPoint(width() * qreal(ii) / 100., value * (height() - 1));
painter->drawLine(lastPoint, currentPoint);
lastPoint = currentPoint;
}
}
int main(int argc, char ** argv)
{
QApplication app(argc, argv);
qmlRegisterType<EasingPlot>("EasingPlot", 1, 0, "EasingPlot");
QQuickView view;
view.setSource(QUrl("qrc:/easing.qml"));
view.show();
return app.exec();
}
#include "main.moc"
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