Implement MathSignal
[pulseview.git] / pv / views / trace / mathsignal.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2020 Soeren Apel <soeren@apelpie.net>
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 <extdef.h>
21
22 #include <QComboBox>
23 #include <QDebug>
24 #include <QFormLayout>
25 #include <QGridLayout>
26 #include <QLineEdit>
27 #include <QString>
28
29 #include "mathsignal.hpp"
30
31 #include "pv/data/signalbase.hpp"
32
33 using pv::data::SignalBase;
34
35 namespace pv {
36 namespace views {
37 namespace trace {
38
39 #define MATHSIGNAL_INPUT_TIMEOUT (2000)
40
41 MathSignal::MathSignal(
42         pv::Session &session,
43         shared_ptr<data::SignalBase> base) :
44         AnalogSignal(session, base),
45         math_signal_(dynamic_pointer_cast<pv::data::MathSignal>(base))
46 {
47         delayed_expr_updater_.setSingleShot(true);
48         delayed_expr_updater_.setInterval(MATHSIGNAL_INPUT_TIMEOUT);
49         connect(&delayed_expr_updater_, &QTimer::timeout,
50                 this, [this]() { math_signal_->set_expression(expression_edit_->text()); });
51 }
52
53 void MathSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
54 {
55         AnalogSignal::populate_popup_form(parent, form);
56
57         expression_edit_ = new QLineEdit();
58         expression_edit_->setText(math_signal_->get_expression());
59         connect(expression_edit_, SIGNAL(textEdited(QString)),
60                 this, SLOT(on_expression_changed(QString)));
61         form->addRow(tr("Expression"), expression_edit_);
62
63         sample_count_cb_ = new QComboBox();
64         sample_count_cb_->setEditable(true);
65         sample_count_cb_->addItem(tr("same as session"));
66         sample_count_cb_->addItem(tr("100"));
67         sample_count_cb_->addItem(tr("10000"));
68         sample_count_cb_->addItem(tr("1000000"));
69         connect(sample_count_cb_, SIGNAL(editTextChanged(QString)),
70                 this, SLOT(on_sample_count_changed(QString)));
71         form->addRow(tr("Number of Samples"), sample_count_cb_);
72
73         sample_rate_cb_ = new QComboBox();
74         sample_rate_cb_->setEditable(true);
75         sample_rate_cb_->addItem(tr("same as session"));
76         sample_rate_cb_->addItem(tr("100"));
77         sample_rate_cb_->addItem(tr("10000"));
78         sample_rate_cb_->addItem(tr("1000000"));
79         form->addRow(tr("Sample rate"), sample_rate_cb_);
80 }
81
82 void MathSignal::on_expression_changed(const QString &text)
83 {
84         (void)text;
85
86         // Restart update timer
87         delayed_expr_updater_.start();
88 }
89
90 void MathSignal::on_sample_count_changed(const QString &text)
91 {
92         (void)text;
93 }
94
95 } // namespace trace
96 } // namespace views
97 } // namespace pv