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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 | int decimals, | |
34 | QString suffix, | |
35 | optional< pair<double, double> > range, | |
36 | optional<double> step, | |
37 | Getter getter, | |
38 | Setter setter) : | |
39 | Property(name, getter, setter), | |
40 | decimals_(decimals), | |
41 | suffix_(suffix), | |
42 | range_(range), | |
43 | step_(step), | |
44 | spin_box_(nullptr) | |
45 | { | |
46 | } | |
47 | ||
48 | QWidget* Double::get_widget(QWidget *parent, bool auto_commit) | |
49 | { | |
50 | if (spin_box_) | |
51 | return spin_box_; | |
52 | ||
53 | if (!getter_) | |
54 | return nullptr; | |
55 | ||
56 | Glib::VariantBase variant = getter_(); | |
57 | if (!variant.gobj()) | |
58 | return nullptr; | |
59 | ||
60 | double value = Glib::VariantBase::cast_dynamic<Glib::Variant<double>>( | |
61 | variant).get(); | |
62 | ||
63 | spin_box_ = new QDoubleSpinBox(parent); | |
64 | spin_box_->setDecimals(decimals_); | |
65 | spin_box_->setSuffix(suffix_); | |
66 | if (range_) | |
67 | spin_box_->setRange(range_->first, range_->second); | |
68 | if (step_) | |
69 | spin_box_->setSingleStep(*step_); | |
70 | ||
71 | spin_box_->setValue(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_(Glib::Variant<double>::create(spin_box_->value())); | |
88 | } | |
89 | ||
90 | void Double::on_value_changed(double) | |
91 | { | |
92 | commit(); | |
93 | } | |
94 | ||
95 | } // namespace prop | |
96 | } // namespace pv |