1 /*
2  *  Copyright (C) 2016, Mike Walters <mike@flomp.net>
3  *
4  *  This file is part of inspectrum.
5  *
6  *  This program is free software: you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License as published by
8  *  the Free Software Foundation, either version 3 of the License, or
9  *  (at your option) any later version.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #pragma once
21 
22 #include <QMouseEvent>
23 #include <QObject>
24 #include <QPainter>
25 #include <QPoint>
26 #include "cursor.h"
27 #include "util.h"
28 
29 class Cursors : public QObject
30 {
31     Q_OBJECT
32 
33 public:
34     Cursors(QObject * parent);
35     int segments();
36     bool mouseEvent(QEvent::Type type, QMouseEvent event);
37     void paintFront(QPainter &painter, QRect &rect, range_t<size_t> sampleRange);
38     range_t<int> selection();
39     void setSegments(int segments);
40     void setSelection(range_t<int> selection);
41 
42 public slots:
43     void cursorMoved();
44 
45 signals:
46     void cursorsMoved();
47 
48 private:
49     bool pointWithinDragRegion(QPoint point);
50 
51     Cursor *minCursor;
52     Cursor *maxCursor;
53     int segmentCount = 1;
54 
55     QPoint dragPos;                // keep track of dragging distance
56     bool cursorOverride = false;   // used to record if cursor is overridden
57     bool dragging = false;         // record if mouse is dragging
58 };
59