Implement MathSignal
[pulseview.git] / pv / views / trace / signal.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2012 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 <extdef.h>
21
22 #include <cassert>
23 #include <cmath>
24
25 #include <QApplication>
26 #include <QFormLayout>
27 #include <QKeyEvent>
28 #include <QLineEdit>
29 #include <QMenu>
30
31 #include <libsigrokcxx/libsigrokcxx.hpp>
32
33 #include "pv/data/signalbase.hpp"
34
35 #include "signal.hpp"
36 #include "view.hpp"
37
38 using std::shared_ptr;
39
40 namespace pv {
41 namespace views {
42 namespace trace {
43
44 const char *const ChannelNames[] = {
45         "CLK",
46         "DATA",
47         "EN",
48         "IN",
49         "OUT",
50         "RST",
51         "TX",
52         "RX",
53         "SDA",
54         "SCL"
55         "SCLK",
56         "MOSI",
57         "MISO",
58         "/CS",
59         "nCS",
60         "/SS",
61         "nSS",
62         "/RST",
63         "nRST",
64 };
65
66 Signal::Signal(pv::Session &session,
67         shared_ptr<data::SignalBase> signal) :
68         Trace(signal),
69         session_(session),
70         name_widget_(nullptr)
71 {
72         assert(base_);
73
74         connect(base_.get(), SIGNAL(enabled_changed(bool)),
75                 this, SLOT(on_enabled_changed(bool)));
76 }
77
78 void Signal::set_name(QString name)
79 {
80         base_->set_name(name);
81
82         if (name != name_widget_->currentText())
83                 name_widget_->setEditText(name);
84 }
85
86 bool Signal::enabled() const
87 {
88         return base_->enabled();
89 }
90
91 shared_ptr<data::SignalBase> Signal::base() const
92 {
93         return base_;
94 }
95
96 void Signal::save_settings(QSettings &settings) const
97 {
98         std::map<QString, QVariant> settings_map = save_settings();
99
100         for (auto& entry : settings_map)
101                 settings.setValue(entry.first, entry.second);
102 }
103
104 std::map<QString, QVariant> Signal::save_settings() const
105 {
106         return std::map<QString, QVariant>();
107 }
108
109 void Signal::restore_settings(QSettings &settings)
110 {
111         std::map<QString, QVariant> settings_map;
112
113         QStringList keys = settings.allKeys();
114         for (int i = 0; i < keys.size(); i++)
115                 settings_map[keys.at(i)] = settings.value(keys.at(i));
116
117         restore_settings(settings_map);
118 }
119
120 void Signal::restore_settings(std::map<QString, QVariant> settings)
121 {
122         (void)settings;
123 }
124
125
126 void Signal::paint_back(QPainter &p, ViewItemPaintParams &pp)
127 {
128         if (base_->enabled())
129                 Trace::paint_back(p, pp);
130 }
131
132 void Signal::populate_popup_form(QWidget *parent, QFormLayout *form)
133 {
134         name_widget_ = new QComboBox(parent);
135         name_widget_->setEditable(true);
136         name_widget_->setCompleter(nullptr);
137
138         for (unsigned int i = 0; i < countof(ChannelNames); i++)
139                 name_widget_->insertItem(i, ChannelNames[i]);
140
141         const int index = name_widget_->findText(base_->name(), Qt::MatchExactly);
142
143         if (index == -1) {
144                 name_widget_->insertItem(0, base_->name());
145                 name_widget_->setCurrentIndex(0);
146         } else {
147                 name_widget_->setCurrentIndex(index);
148         }
149
150         connect(name_widget_, SIGNAL(editTextChanged(const QString&)),
151                 this, SLOT(on_nameedit_changed(const QString&)));
152
153         form->addRow(tr("Name"), name_widget_);
154
155         add_color_option(parent, form);
156 }
157
158 QMenu* Signal::create_header_context_menu(QWidget *parent)
159 {
160         QMenu *const menu = Trace::create_header_context_menu(parent);
161
162         menu->addSeparator();
163
164         QString caption;
165
166         if (base_->is_generated())
167                 caption = tr("Remove");
168         else
169                 caption = tr("Disable");
170
171         QAction *const a = new QAction(caption, this);
172         a->setShortcuts(QKeySequence::Delete);
173         connect(a, SIGNAL(triggered()), this, SLOT(on_disable()));
174         menu->addAction(a);
175
176         return menu;
177 }
178
179 void Signal::delete_pressed()
180 {
181         on_disable();
182 }
183
184 void Signal::on_name_changed(const QString &text)
185 {
186         // On startup, this event is fired when a session restores signal
187         // names. However, the name widget hasn't yet been created.
188         if (!name_widget_)
189                 return;
190
191         if (text != name_widget_->currentText())
192                 name_widget_->setEditText(text);
193
194         Trace::on_name_changed(text);
195 }
196
197 void Signal::on_disable()
198 {
199         if (base_->is_generated())
200                 session_.remove_generated_signal(base_);
201         else
202                 base_->set_enabled(false);
203 }
204
205 void Signal::on_enabled_changed(bool enabled)
206 {
207         (void)enabled;
208
209         if (owner_)
210                 owner_->extents_changed(true, true);
211 }
212
213 } // namespace trace
214 } // namespace views
215 } // namespace pv