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/*
* Copyright 2014 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; version 3.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Michael Zanetti <michael.zanetti@canonical.com>
*/
#ifndef EASINGCURVE_H
#define EASINGCURVE_H
#include <QObject>
#include <QEasingCurve>
/**
* @brief The EasingCurve class
*
* This class exposes the QEasingCurve C++ API to QML.
* This is useful for user interactive animations. While the QML Animation types
* all require a "from", "to" and "duration", this one is based on "period" and
* "progress". So you can control the position of the animation by changing the
* progress, also going back and forward in the aimation. Depending on the type
* of the easing curve, value will return the transformed progress.
*/
class EasingCurve: public QObject
{
Q_OBJECT
Q_PROPERTY(QEasingCurve::Type type READ type WRITE setType NOTIFY typeChanged)
Q_PROPERTY(qreal period READ period WRITE setPeriod NOTIFY periodChanged)
Q_PROPERTY(qreal progress READ progress WRITE setProgress NOTIFY progressChanged)
Q_PROPERTY(qreal value READ value NOTIFY progressChanged)
public:
EasingCurve(QObject *parent = 0);
QEasingCurve::Type type() const;
void setType(const QEasingCurve::Type type);
qreal period() const;
void setPeriod(qreal period);
qreal progress() const;
void setProgress(qreal progress);
qreal value() const;
Q_SIGNALS:
void typeChanged();
void periodChanged();
void progressChanged();
private:
QEasingCurve m_easingCurve;
qreal m_progress;
qreal m_value;
};
#endif
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