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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef HOVERPOINTS_H
#define HOVERPOINTS_H
#include <QtGui>
QT_FORWARD_DECLARE_CLASS(QBypassWidget)
class HoverPoints : public QObject
{
Q_OBJECT
public:
enum PointShape {
CircleShape,
RectangleShape
};
enum LockType {
LockToLeft = 0x01,
LockToRight = 0x02,
LockToTop = 0x04,
LockToBottom = 0x08
};
enum SortType {
NoSort,
XSort,
YSort
};
enum ConnectionType {
NoConnection,
LineConnection,
CurveConnection
};
HoverPoints(QWidget *widget, PointShape shape);
bool eventFilter(QObject *object, QEvent *event);
void paintPoints();
inline QRectF boundingRect() const;
void setBoundingRect(const QRectF &boundingRect) { m_bounds = boundingRect; }
QPolygonF points() const { return m_points; }
void setPoints(const QPolygonF &points);
QSizeF pointSize() const { return m_pointSize; }
void setPointSize(const QSizeF &size) { m_pointSize = size; }
SortType sortType() const { return m_sortType; }
void setSortType(SortType sortType) { m_sortType = sortType; }
ConnectionType connectionType() const { return m_connectionType; }
void setConnectionType(ConnectionType connectionType) { m_connectionType = connectionType; }
void setConnectionPen(const QPen &pen) { m_connectionPen = pen; }
void setShapePen(const QPen &pen) { m_pointPen = pen; }
void setShapeBrush(const QBrush &brush) { m_pointBrush = brush; }
void setPointLock(int pos, LockType lock) { m_locks[pos] = lock; }
void setEditable(bool editable) { m_editable = editable; }
bool editable() const { return m_editable; }
public slots:
void setEnabled(bool enabled);
void setDisabled(bool disabled) { setEnabled(!disabled); }
signals:
void pointsChanged(const QPolygonF &points);
public:
void firePointChange();
private:
inline QRectF pointBoundingRect(int i) const;
void movePoint(int i, const QPointF &newPos, bool emitChange = true);
QWidget *m_widget;
QPolygonF m_points;
QRectF m_bounds;
PointShape m_shape;
SortType m_sortType;
ConnectionType m_connectionType;
QVector<uint> m_locks;
QSizeF m_pointSize;
int m_currentIndex;
bool m_editable;
bool m_enabled;
QPen m_pointPen;
QBrush m_pointBrush;
QPen m_connectionPen;
};
inline QRectF HoverPoints::pointBoundingRect(int i) const
{
QPointF p = m_points.at(i);
qreal w = m_pointSize.width();
qreal h = m_pointSize.height();
qreal x = p.x() - w / 2;
qreal y = p.y() - h / 2;
return QRectF(x, y, w, h);
}
inline QRectF HoverPoints::boundingRect() const
{
if (m_bounds.isEmpty())
return m_widget->rect();
else
return m_bounds;
}
#endif // HOVERPOINTS_H
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