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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 <QDoubleSpinBox> | |
23 | ||
24 | #include "double.hpp" | |
25 | ||
26 | using boost::optional; | |
27 | using std::pair; | |
28 | ||
29 | namespace pv { | |
30 | namespace prop { | |
31 | ||
32 | Double::Double(QString name, | |
33 | QString desc, | |
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, desc, getter, setter), | |
41 | decimals_(decimals), | |
42 | suffix_(suffix), | |
43 | range_(range), | |
44 | step_(step), | |
45 | spin_box_(nullptr) | |
46 | { | |
47 | } | |
48 | ||
49 | QWidget* Double::get_widget(QWidget *parent, bool auto_commit) | |
50 | { | |
51 | if (spin_box_) | |
52 | return spin_box_; | |
53 | ||
54 | if (!getter_) | |
55 | return nullptr; | |
56 | ||
57 | Glib::VariantBase variant = getter_(); | |
58 | if (!variant.gobj()) | |
59 | return nullptr; | |
60 | ||
61 | spin_box_ = new QDoubleSpinBox(parent); | |
62 | spin_box_->setDecimals(decimals_); | |
63 | spin_box_->setSuffix(suffix_); | |
64 | if (range_) | |
65 | spin_box_->setRange(range_->first, range_->second); | |
66 | if (step_) | |
67 | spin_box_->setSingleStep(*step_); | |
68 | ||
69 | update_widget(); | |
70 | ||
71 | if (auto_commit) | |
72 | connect(spin_box_, SIGNAL(valueChanged(double)), | |
73 | this, SLOT(on_value_changed(double))); | |
74 | ||
75 | return spin_box_; | |
76 | } | |
77 | ||
78 | void Double::update_widget() | |
79 | { | |
80 | if (!spin_box_) | |
81 | return; | |
82 | ||
83 | Glib::VariantBase variant = getter_(); | |
84 | assert(variant.gobj()); | |
85 | ||
86 | double value = Glib::VariantBase::cast_dynamic<Glib::Variant<double>>( | |
87 | variant).get(); | |
88 | spin_box_->setValue(value); | |
89 | } | |
90 | ||
91 | void Double::commit() | |
92 | { | |
93 | assert(setter_); | |
94 | ||
95 | if (!spin_box_) | |
96 | return; | |
97 | ||
98 | setter_(Glib::Variant<double>::create(spin_box_->value())); | |
99 | } | |
100 | ||
101 | void Double::on_value_changed(double) | |
102 | { | |
103 | commit(); | |
104 | } | |
105 | ||
106 | } // namespace prop | |
107 | } // namespace pv |