qtdeclarative/src/quicktemplates2/qquickscrollbar_p_p.h

/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
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** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL3$
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
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#ifndef QQUICKSCROLLBAR_P_P_H
#define QQUICKSCROLLBAR_P_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtQuickTemplates2/private/qquickscrollbar_p.h>
#include <QtQuickTemplates2/private/qquickcontrol_p_p.h>
#include <QtQuick/private/qquickitemchangelistener_p.h>

QT_BEGIN_NAMESPACE

class QQuickFlickable;

class QQuickScrollBarPrivate : public QQuickControlPrivate
{
    Q_DECLARE_PUBLIC(QQuickScrollBar)

public:
    QQuickScrollBarPrivate();

    static QQuickScrollBarPrivate *get(QQuickScrollBar *bar)
    {
        return bar->d_func();
    }

    qreal snapPosition(qreal position) const;
    qreal positionAt(const QPointF &point) const;
    void setInteractive(bool interactive);
    void updateActive();
    void resizeContent() override;

    void handlePress(const QPointF &point);
    void handleMove(const QPointF &point);
    void handleRelease(const QPointF &point);
    void handleUngrab();

    qreal size;
    qreal position;
    qreal stepSize;
    qreal offset;
    bool active;
    bool pressed;
    bool moving;
    bool interactive;
    bool explicitInteractive;
    Qt::Orientation orientation;
    QQuickScrollBar::SnapMode snapMode;
    QQuickScrollBar::Policy policy;
};

class QQuickScrollBarAttachedPrivate : public QObjectPrivate, public QQuickItemChangeListener
{
public:
    QQuickScrollBarAttachedPrivate();

    static QQuickScrollBarAttachedPrivate *get(QQuickScrollBarAttached *attached)
    {
        return attached->d_func();
    }

    void setFlickable(QQuickFlickable *flickable);

    void initHorizontal();
    void initVertical();
    void cleanupHorizontal();
    void cleanupVertical();
    void activateHorizontal();
    void activateVertical();
    void scrollHorizontal();
    void scrollVertical();
    void mirrorVertical();

    void layoutHorizontal(bool move = true);
    void layoutVertical(bool move = true);

    void itemGeometryChanged(QQuickItem *item, QQuickGeometryChange change, const QRectF &diff) override;
    void itemImplicitWidthChanged(QQuickItem *item) override;
    void itemImplicitHeightChanged(QQuickItem *item) override;
    void itemDestroyed(QQuickItem *item) override;

    QQuickFlickable *flickable;
    QQuickScrollBar *horizontal;
    QQuickScrollBar *vertical;
};

QT_END_NAMESPACE

#endif // QQUICKSCROLLBAR_P_P_H