2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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 2 of the License, or
9 * (at your option) any later version.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef PULSEVIEW_PV_VIEW_RULER_H
22 #define PULSEVIEW_PV_VIEW_RULER_H
24 #include <boost/weak_ptr.hpp>
26 #include "marginwidget.h"
34 class Ruler : public MarginWidget
39 static const int MinorTickSubdivision;
40 static const int ScaleUnits[3];
42 static const QString SIPrefixes[9];
43 static const int FirstSIPrefixPower;
45 static const int HoverArrowSize;
50 void clear_selection();
52 static QString format_time(double t, unsigned int prefix,
53 unsigned precision = 0);
56 void paintEvent(QPaintEvent *event);
58 void mouseMoveEvent(QMouseEvent *e);
59 void mousePressEvent(QMouseEvent *e);
60 void mouseReleaseEvent(QMouseEvent *);
64 * Draw a hover arrow under the cursor position.
66 void draw_hover_mark(QPainter &p);
69 void hover_point_changed();
72 boost::weak_ptr<TimeMarker> _grabbed_marker;
73 QPoint _mouse_down_point;
80 #endif // PULSEVIEW_PV_VIEW_RULER_H