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74 lines
2 KiB
C
74 lines
2 KiB
C
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/*
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Copyright (C) 2009 Igor Trindade Oliveira <igor.oliveira@indt.org.br>
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Copyright (C) 2009 Adenilson Cavalcanti <adenilson.silva@idnt.org.br>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PLASMA_KINETICSCROLLING_H
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#define PLASMA_KINETICSCROLLING_H
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class QGraphicsSceneMouseEvent;
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class QGraphicsWidget;
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class QGraphicsSceneWheelEvent;
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class QKeyEvent;
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#include <QObject>
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#include <QPointF>
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#include <QtCore/QAbstractAnimation>
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namespace Plasma
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{
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class KineticScrollingPrivate;
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class KineticScrolling: public QObject
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{
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Q_OBJECT
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public:
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KineticScrolling(QGraphicsWidget *parent);
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~KineticScrolling();
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void setWidget(QGraphicsWidget *parent);
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void stop();
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Q_SIGNALS:
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void stateChanged(QAbstractAnimation::State newState,
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QAbstractAnimation::State oldState);
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protected:
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void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
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void mousePressEvent(QGraphicsSceneMouseEvent *event);
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void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
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void wheelReleaseEvent(QGraphicsSceneWheelEvent *event);
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void keyPressEvent(QKeyEvent *event);
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private:
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KineticScrollingPrivate *d;
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void resetAnimation(QPointF finalPosition, int duration);
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void setScrollValue(QPointF value);
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QPointF thresholdPosition(QPointF value) const;
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void duration();
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private Q_SLOTS:
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void overshoot();
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protected:
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bool eventFilter(QObject *watched, QEvent *event);
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};
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}
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#endif
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