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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2013 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 | #include <assert.h> | |
22 | ||
23 | #include <QDoubleSpinBox> | |
24 | ||
25 | #include "double.h" | |
26 | ||
27 | using boost::optional; | |
28 | using std::pair; | |
29 | ||
30 | namespace pv { | |
31 | namespace prop { | |
32 | ||
33 | Double::Double(QString name, | |
34 | int decimals, | |
35 | QString suffix, | |
36 | optional< pair<double, double> > range, | |
37 | optional<double> step, | |
38 | Getter getter, | |
39 | Setter setter) : | |
40 | Property(name, getter, setter), | |
41 | _decimals(decimals), | |
42 | _suffix(suffix), | |
43 | _range(range), | |
44 | _step(step), | |
45 | _spin_box(NULL) | |
46 | { | |
47 | } | |
48 | ||
49 | Double::~Double() | |
50 | { | |
51 | } | |
52 | ||
53 | QWidget* Double::get_widget(QWidget *parent, bool auto_commit) | |
54 | { | |
55 | if (_spin_box) | |
56 | return _spin_box; | |
57 | ||
58 | GVariant *const value = _getter ? _getter() : NULL; | |
59 | if (!value) | |
60 | return NULL; | |
61 | ||
62 | _spin_box = new QDoubleSpinBox(parent); | |
63 | _spin_box->setDecimals(_decimals); | |
64 | _spin_box->setSuffix(_suffix); | |
65 | if (_range) | |
66 | _spin_box->setRange(_range->first, _range->second); | |
67 | if (_step) | |
68 | _spin_box->setSingleStep(*_step); | |
69 | ||
70 | _spin_box->setValue(g_variant_get_double(value)); | |
71 | g_variant_unref(value); | |
72 | ||
73 | if (auto_commit) | |
74 | connect(_spin_box, SIGNAL(valueChanged(double)), | |
75 | this, SLOT(on_value_changed(double))); | |
76 | ||
77 | return _spin_box; | |
78 | } | |
79 | ||
80 | void Double::commit() | |
81 | { | |
82 | assert(_setter); | |
83 | ||
84 | if (!_spin_box) | |
85 | return; | |
86 | ||
87 | _setter(g_variant_new_double(_spin_box->value())); | |
88 | } | |
89 | ||
90 | void Double::on_value_changed(double) | |
91 | { | |
92 | commit(); | |
93 | } | |
94 | ||
95 | } // prop | |
96 | } // pv |