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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef HOVERPOINTS_H
#define HOVERPOINTS_H
#include <QtWidgets>
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) override;
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;
QHash<int, int> m_fingerPointMapping;
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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