91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef SCROLLER_P_H
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#define SCROLLER_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <QPoint>
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#include <QTimer>
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#include <QTime>
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#include "scroller.h"
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class AbstractScrollArea;
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class ScrollerPrivate
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{
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Q_DECLARE_PUBLIC(Scroller)
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public:
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enum State {
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Stopped,
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Started,
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ManualScrolling,
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AutoScrolling
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};
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ScrollerPrivate(Scroller *scroller);
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~ScrollerPrivate();
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void stopScrolling();
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bool eventFilter(QObject *obj, QEvent *ev);
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AbstractScrollArea *m_scrollArea;
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qreal m_scrollFactor;
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QPoint m_cursorPos;
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QPointF m_speed;
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State m_state;
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QTime m_lastCursorTime;
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QTime m_lastFrameTime;
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QTimer m_scrollTimer;
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int m_scrollSlowAccum;
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private Q_SLOTS:
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void updateScrolling();
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private:
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Q_DISABLE_COPY(ScrollerPrivate)
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Scroller * const q_ptr;
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QPointF mapToScrollArea(const QPoint &point);
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QWidget *m_eventViewport;
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};
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#endif // SCROLLER_P_H
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