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View: Fix #513 by scrolling 1/8th the view height per step
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1/*
2 * This file is part of the PulseView project.
3 *
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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 2 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, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#ifndef PULSEVIEW_PV_VIEW_MARKER_H
22#define PULSEVIEW_PV_VIEW_MARKER_H
23
24#include <QColor>
25#include <QDoubleSpinBox>
26#include <QObject>
27#include <QRectF>
28#include <QWidgetAction>
29
30#include "timeitem.hpp"
31
32class QPainter;
33class QRect;
34
35namespace pv {
36namespace view {
37
38class View;
39
40class TimeMarker : public TimeItem
41{
42 Q_OBJECT
43
44public:
45 static const int ArrowSize;
46 static const int Offset;
47
48protected:
49 /**
50 * Constructor.
51 * @param view A reference to the view that owns this marker.
52 * @param colour A reference to the colour of this cursor.
53 * @param time The time to set the flag to.
54 */
55 TimeMarker(View &view, const QColor &colour, double time);
56
57public:
58 /**
59 * Gets the time of the marker.
60 */
61 double time() const;
62
63 /**
64 * Sets the time of the marker.
65 */
66 void set_time(double time);
67
68 float get_x() const;
69
70 /**
71 * Gets the drag point of the row item.
72 */
73 QPoint point() const;
74
75 /**
76 * Paints the marker to the viewport.
77 * @param p The painter to draw with.
78 * @param rect The rectangle of the viewport client area.
79 */
80 virtual void paint(QPainter &p, const QRect &rect);
81
82 /**
83 * Computes the outline rectangle of a label.
84 * @param rect the rectangle of the header area.
85 * @return Returns the rectangle of the signal label.
86 */
87 QRectF label_rect(const QRectF &rect) const;
88
89 /**
90 * Gets the text to show in the marker.
91 */
92 virtual QString get_text() const = 0;
93
94 /**
95 * Paints the marker's label to the ruler.
96 * @param p The painter to draw with.
97 * @param rect The rectangle of the ruler client area.
98 */
99 void paint_label(QPainter &p, const QRect &rect);
100
101 pv::widgets::Popup* create_popup(QWidget *parent);
102
103private Q_SLOTS:
104 void on_value_changed(double value);
105
106Q_SIGNALS:
107 void time_changed();
108
109protected:
110 const QColor &colour_;
111
112 double time_;
113
114 QSizeF text_size_;
115
116 QWidgetAction *value_action_;
117 QDoubleSpinBox *value_widget_;
118 bool updating_value_widget_;
119};
120
121} // namespace view
122} // namespace pv
123
124#endif // PULSEVIEW_PV_VIEW_MARKER_H