ktechlab/src/eventinfo.h

0001 /***************************************************************************
0002  *   Copyright (C) 2005 by David Saxton                                    *
0003  *   david@bluehaze.org                                                    *
0004  *                                                                         *
0005  *   This program is free software; you can redistribute it and/or modify  *
0006  *   it under the terms of the GNU General Public License as published by  *
0007  *   the Free Software Foundation; either version 2 of the License, or     *
0008  *   (at your option) any later version.                                   *
0009  ***************************************************************************/
0010
0011 #ifndef EVENTINFO_H
0012 #define EVENTINFO_H
0013
0014 #include <QPoint>
0015
0016 class ItemView;
0017
0018 class KtlQCanvasItem;
0019 class QEvent;
0020 class QMouseEvent;
0021 class QWheelEvent;
0022
0023 /**
0024 Contains information from for a mouse event that occurred on a canvas. Like a
0025 QMouseEvent / QEvent / QWheelEvent, but abstracted to the canvas coordinate
0026 system, as well as holding lots of useful information.
0027 @author David Saxton
0028 */
0029 class EventInfo
0030 {
0031 public:
0032     EventInfo();
0033     EventInfo(ItemView *itemView, QMouseEvent *e);
0034     EventInfo(ItemView *itemView, QWheelEvent *e);
0035     EventInfo(ItemView *itemView, QEvent *e);
0036
0037     QMouseEvent *mousePressEvent(int dx, int dy) const;
0038     QMouseEvent *mouseReleaseEvent(int dx, int dy) const;
0039     QMouseEvent *mouseDoubleClickEvent(int dx, int dy) const;
0040     QMouseEvent *mouseMoveEvent(int dx, int dy) const;
0041     QWheelEvent *wheelEvent(int dx, int dy) const;
0042
0043     QPoint pos;
0044     QPoint globalPos;
0045     KtlQCanvasItem *qcanvasItemClickedOn;
0046     short scrollDelta;
0047     Qt::Orientation scrollOrientation;
0048     bool isRightClick;
0049     bool isMiddleClick;
0050     bool ctrlPressed;
0051     bool shiftPressed;
0052     bool altPressed;
0053
0054 protected:
0055     void extractPos(ItemView *itemView, const QPoint &contentsMouseClick);
0056     void reset();
0057 };
0058
0059 #endif