1 /***************************************************************************
2 * Copyright (C) 2010 by Till Theato (root@ttill.de) *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
18 ***************************************************************************/
21 #ifndef ONMONITORCORNERSITEM_H
22 #define ONMONITORCORNERSITEM_H
26 #include <QGraphicsPolygonItem>
30 class OnMonitorCornersItem : public QObject, public QGraphicsPolygonItem
34 OnMonitorCornersItem(QGraphicsItem *parent = 0);
36 enum cornersActions { Corner, Move, MoveSide, NoAction };
37 /** @brief Gets The action mode for the area @param pos +- 4. */
38 cornersActions getMode(const QPointF &pos, int *corner);
40 /** @brief Reimplemented to draw the handles. */
41 virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0 );
44 virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
45 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
46 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
47 virtual void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
50 /** @brief Returns the centroid (= 'center of mass') of this polygon. */
51 QPointF getCentroid();
53 /** @brief Returns the points of this polygon but sorted clockwise. */
54 QList <QPointF> sortedClockwise();
56 /** @brief Tries to get the view of the scene. */
59 cornersActions m_mode;
60 /** Number of the selected corner or if in MoveSide mode number of the first corner on this side */
65 QGraphicsView *m_view;