/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the demonstration applications of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef HOVERPOINTS_H+
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#define HOVERPOINTS_H+
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+
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#include <QtGui>+
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+
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QT_FORWARD_DECLARE_CLASS(QBypassWidget)+
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+
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class HoverPoints : public QObject+
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{+
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    Q_OBJECT+
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public:+
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    enum PointShape {+
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        CircleShape,+
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        RectangleShape+
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    };+
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+
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    enum LockType {+
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        LockToLeft   = 0x01,+
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        LockToRight  = 0x02,+
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        LockToTop    = 0x04,+
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        LockToBottom = 0x08+
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    };+
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+
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    enum SortType {+
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        NoSort,+
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        XSort,+
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        YSort+
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    };+
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+
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    enum ConnectionType {+
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        NoConnection,+
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        LineConnection,+
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        CurveConnection+
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    };+
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+
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    HoverPoints(QWidget *widget, PointShape shape);+
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+
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    bool eventFilter(QObject *object, QEvent *event);+
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+
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    void paintPoints();+
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+
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    inline QRectF boundingRect() const;+
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    void setBoundingRect(const QRectF &boundingRect) { m_bounds = boundingRect; }+
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+
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    QPolygonF points() const { return m_points; }+
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    void setPoints(const QPolygonF &points);+
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+
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    QSizeF pointSize() const { return m_pointSize; }+
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    void setPointSize(const QSizeF &size) { m_pointSize = size; }+
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+
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    SortType sortType() const { return m_sortType; }+
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    void setSortType(SortType sortType) { m_sortType = sortType; }+
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+
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    ConnectionType connectionType() const { return m_connectionType; }+
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    void setConnectionType(ConnectionType connectionType) { m_connectionType = connectionType; }+
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+
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    void setConnectionPen(const QPen &pen) { m_connectionPen = pen; }+
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    void setShapePen(const QPen &pen) { m_pointPen = pen; }+
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    void setShapeBrush(const QBrush &brush) { m_pointBrush = brush; }+
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+
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    void setPointLock(int pos, LockType lock) { m_locks[pos] = lock; }+
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+
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    void setEditable(bool editable) { m_editable = editable; }+
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    bool editable() const { return m_editable; }+
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+
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public slots:+
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    void setEnabled(bool enabled);+
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    void setDisabled(bool disabled) { setEnabled(!disabled); }+
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+
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signals:+
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    void pointsChanged(const QPolygonF &points);+
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+
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public:+
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    void firePointChange();+
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+
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private:+
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    inline QRectF pointBoundingRect(int i) const;+
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    void movePoint(int i, const QPointF &newPos, bool emitChange = true);+
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+
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    QWidget *m_widget;+
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+
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    QPolygonF m_points;+
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    QRectF m_bounds;+
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    PointShape m_shape;+
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    SortType m_sortType;+
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    ConnectionType m_connectionType;+
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+
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    QVector<uint> m_locks;+
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+
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    QSizeF m_pointSize;+
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    int m_currentIndex;+
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    bool m_editable;+
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    bool m_enabled;+
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+
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    QHash<int, int> m_fingerPointMapping;+
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+
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    QPen m_pointPen;+
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    QBrush m_pointBrush;+
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    QPen m_connectionPen;+
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};+
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+
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+
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inline QRectF HoverPoints::pointBoundingRect(int i) const+
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{+
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    QPointF p = m_points.at(i);+
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    qreal w = m_pointSize.width();+
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    qreal h = m_pointSize.height();+
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    qreal x = p.x() - w / 2;+
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    qreal y = p.y() - h / 2;+
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    return QRectF(x, y, w, h);+
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}+
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+
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inline QRectF HoverPoints::boundingRect() const+
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{+
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    if (m_bounds.isEmpty())+
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        return m_widget->rect();+
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    else+
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        return m_bounds;+
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}+
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+
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#endif // HOVERPOINTS_H+
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