1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/*
* This file is part of the PulseView project.
*
* Copyright (C) 2015 Jens Steinhauser <jens.steinhauser@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "timestampspinbox.hpp"
#include <QLineEdit>
#include <QRegExp>
namespace pv {
namespace widgets {
TimestampSpinBox::TimestampSpinBox(QWidget* parent)
: QAbstractSpinBox(parent)
, precision_(9)
, stepsize_("1e-6")
{
connect(this, SIGNAL(editingFinished()), this, SLOT(on_editingFinished()));
connect(lineEdit(), SIGNAL(editingFinished()), this, SLOT(on_editingFinished()));
updateEdit();
}
void TimestampSpinBox::stepBy(int steps)
{
setValue(value_ + steps * stepsize_);
}
QAbstractSpinBox::StepEnabled TimestampSpinBox::stepEnabled() const
{
return QAbstractSpinBox::StepUpEnabled | QAbstractSpinBox::StepDownEnabled;
}
unsigned TimestampSpinBox::precision() const
{
return precision_;
}
void TimestampSpinBox::setPrecision(unsigned precision)
{
precision_ = precision;
updateEdit();
}
const pv::util::Timestamp& TimestampSpinBox::singleStep() const
{
return stepsize_;
}
void TimestampSpinBox::setSingleStep(const pv::util::Timestamp& step)
{
stepsize_ = step;
}
const pv::util::Timestamp& TimestampSpinBox::value() const
{
return value_;
}
QSize TimestampSpinBox::minimumSizeHint() const
{
const QFontMetrics fm(fontMetrics());
const int l = round(value_).str().size() + precision_ + 10;
const int w = util::text_width(fm, QString(l, '0'));
const int h = lineEdit()->minimumSizeHint().height();
return QSize(w, h);
}
void TimestampSpinBox::setValue(const pv::util::Timestamp& val)
{
if (val == value_)
return;
value_ = val;
updateEdit();
valueChanged(value_);
}
void TimestampSpinBox::on_editingFinished()
{
QRegExp re(R"(\s*([-+]?)\s*([0-9]+\.?[0-9]*).*)");
if (re.exactMatch(text())) {
QStringList captures = re.capturedTexts();
captures.removeFirst(); // remove entire match
QString str = captures.join("");
setValue(pv::util::Timestamp(str.toStdString()));
} else {
// replace the malformed entered string with the old value
updateEdit();
}
}
void TimestampSpinBox::updateEdit()
{
QString newtext = pv::util::format_time_si(
value_, pv::util::SIPrefix::none, precision_);
const QSignalBlocker blocker(lineEdit());
// Keep cursor position
int cursor = lineEdit()->cursorPosition();
lineEdit()->setText(newtext);
lineEdit()->setCursorPosition(cursor);
}
} // namespace widgets
} // namespace pv
|
