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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the demonstration applications of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #ifndef HOVERPOINTS_H

    43 #define HOVERPOINTS_H

    44 

    45 #include <QtGui>

    46 

    47 QT_FORWARD_DECLARE_CLASS(QBypassWidget)

    48 

    49 class HoverPoints : public QObject

    50 {

    51     Q_OBJECT

    52 public:

    53     enum PointShape {

    54         CircleShape,

    55         RectangleShape

    56     };

    57 

    58     enum LockType {

    59         LockToLeft   = 0x01,

    60         LockToRight  = 0x02,

    61         LockToTop    = 0x04,

    62         LockToBottom = 0x08

    63     };

    64 

    65     enum SortType {

    66         NoSort,

    67         XSort,

    68         YSort

    69     };

    70 

    71     enum ConnectionType {

    72         NoConnection,

    73         LineConnection,

    74         CurveConnection

    75     };

    76 

    77     HoverPoints(QWidget *widget, PointShape shape);

    78 

    79     bool eventFilter(QObject *object, QEvent *event);

    80 

    81     void paintPoints();

    82 

    83     inline QRectF boundingRect() const;

    84     void setBoundingRect(const QRectF &boundingRect) { m_bounds = boundingRect; }

    85 

    86     QPolygonF points() const { return m_points; }

    87     void setPoints(const QPolygonF &points);

    88 

    89     QSizeF pointSize() const { return m_pointSize; }

    90     void setPointSize(const QSizeF &size) { m_pointSize = size; }

    91 

    92     SortType sortType() const { return m_sortType; }

    93     void setSortType(SortType sortType) { m_sortType = sortType; }

    94 

    95     ConnectionType connectionType() const { return m_connectionType; }

    96     void setConnectionType(ConnectionType connectionType) { m_connectionType = connectionType; }

    97 

    98     void setConnectionPen(const QPen &pen) { m_connectionPen = pen; }

    99     void setShapePen(const QPen &pen) { m_pointPen = pen; }

   100     void setShapeBrush(const QBrush &brush) { m_pointBrush = brush; }

   101 

   102     void setPointLock(int pos, LockType lock) { m_locks[pos] = lock; }

   103 

   104     void setEditable(bool editable) { m_editable = editable; }

   105     bool editable() const { return m_editable; }

   106 

   107 public slots:

   108     void setEnabled(bool enabled);

   109     void setDisabled(bool disabled) { setEnabled(!disabled); }

   110 

   111 signals:

   112     void pointsChanged(const QPolygonF &points);

   113 

   114 public:

   115     void firePointChange();

   116 

   117 private:

   118     inline QRectF pointBoundingRect(int i) const;

   119     void movePoint(int i, const QPointF &newPos, bool emitChange = true);

   120 

   121     QWidget *m_widget;

   122 

   123     QPolygonF m_points;

   124     QRectF m_bounds;

   125     PointShape m_shape;

   126     SortType m_sortType;

   127     ConnectionType m_connectionType;

   128 

   129     QVector<uint> m_locks;

   130 

   131     QSizeF m_pointSize;

   132     int m_currentIndex;

   133     bool m_editable;

   134     bool m_enabled;

   135 

   136     QHash<int, int> m_fingerPointMapping;

   137 

   138     QPen m_pointPen;

   139     QBrush m_pointBrush;

   140     QPen m_connectionPen;

   141 };

   142 

   143 

   144 inline QRectF HoverPoints::pointBoundingRect(int i) const

   145 {

   146     QPointF p = m_points.at(i);

   147     qreal w = m_pointSize.width();

   148     qreal h = m_pointSize.height();

   149     qreal x = p.x() - w / 2;

   150     qreal y = p.y() - h / 2;

   151     return QRectF(x, y, w, h);

   152 }

   153 

   154 inline QRectF HoverPoints::boundingRect() const

   155 {

   156     if (m_bounds.isEmpty())

   157         return m_widget->rect();

   158     else

   159         return m_bounds;

   160 }

   161 

   162 #endif // HOVERPOINTS_H