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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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <cassert> | |
21 | ||
22 | #include <QDebug> | |
23 | #include <QDoubleSpinBox> | |
24 | ||
25 | #include <libsigrokcxx/libsigrokcxx.hpp> | |
26 | ||
27 | #include "double.hpp" | |
28 | ||
29 | using boost::optional; | |
30 | using std::pair; | |
31 | ||
32 | namespace pv { | |
33 | namespace prop { | |
34 | ||
35 | Double::Double(QString name, | |
36 | QString desc, | |
37 | int decimals, | |
38 | QString suffix, | |
39 | optional< pair<double, double> > range, | |
40 | optional<double> step, | |
41 | Getter getter, | |
42 | Setter setter) : | |
43 | Property(name, desc, getter, setter), | |
44 | decimals_(decimals), | |
45 | suffix_(suffix), | |
46 | range_(range), | |
47 | step_(step), | |
48 | spin_box_(nullptr) | |
49 | { | |
50 | } | |
51 | ||
52 | QWidget* Double::get_widget(QWidget *parent, bool auto_commit) | |
53 | { | |
54 | if (spin_box_) | |
55 | return spin_box_; | |
56 | ||
57 | if (!getter_) | |
58 | return nullptr; | |
59 | ||
60 | try { | |
61 | Glib::VariantBase variant = getter_(); | |
62 | if (!variant.gobj()) | |
63 | return nullptr; | |
64 | } catch (const sigrok::Error &e) { | |
65 | qWarning() << tr("Querying config key %1 resulted in %2").arg(name_, e.what()); | |
66 | return nullptr; | |
67 | } | |
68 | ||
69 | spin_box_ = new QDoubleSpinBox(parent); | |
70 | spin_box_->setDecimals(decimals_); | |
71 | spin_box_->setSuffix(suffix_); | |
72 | if (range_) | |
73 | spin_box_->setRange(range_->first, range_->second); | |
74 | if (step_) | |
75 | spin_box_->setSingleStep(*step_); | |
76 | ||
77 | update_widget(); | |
78 | ||
79 | if (auto_commit) | |
80 | connect(spin_box_, SIGNAL(valueChanged(double)), | |
81 | this, SLOT(on_value_changed(double))); | |
82 | ||
83 | return spin_box_; | |
84 | } | |
85 | ||
86 | void Double::update_widget() | |
87 | { | |
88 | if (!spin_box_) | |
89 | return; | |
90 | ||
91 | Glib::VariantBase variant; | |
92 | ||
93 | try { | |
94 | variant = getter_(); | |
95 | } catch (const sigrok::Error &e) { | |
96 | qWarning() << tr("Querying config key %1 resulted in %2").arg(name_, e.what()); | |
97 | return; | |
98 | } | |
99 | ||
100 | assert(variant.gobj()); | |
101 | ||
102 | double value = Glib::VariantBase::cast_dynamic<Glib::Variant<double>>( | |
103 | variant).get(); | |
104 | spin_box_->setValue(value); | |
105 | } | |
106 | ||
107 | void Double::commit() | |
108 | { | |
109 | assert(setter_); | |
110 | ||
111 | if (!spin_box_) | |
112 | return; | |
113 | ||
114 | setter_(Glib::Variant<double>::create(spin_box_->value())); | |
115 | } | |
116 | ||
117 | void Double::on_value_changed(double) | |
118 | { | |
119 | commit(); | |
120 | } | |
121 | ||
122 | } // namespace prop | |
123 | } // namespace pv |