Rework new segment notification mechanism
[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         "IN",
48         "OUT",
49         "RST",
50         "TX",
51         "RX",
52         "EN",
53         "SCLK",
54         "MOSI",
55         "MISO",
56         "/SS",
57         "SDA",
58         "SCL"
59 };
60
61 Signal::Signal(pv::Session &session,
62         shared_ptr<data::SignalBase> channel) :
63         Trace(channel),
64         session_(session),
65         name_widget_(nullptr),
66         current_segment_(0)
67 {
68         assert(base_);
69
70         connect(base_.get(), SIGNAL(enabled_changed(bool)),
71                 this, SLOT(on_enabled_changed(bool)));
72 }
73
74 void Signal::set_name(QString name)
75 {
76         Trace::set_name(name);
77
78         if (name != name_widget_->currentText())
79                 name_widget_->setEditText(name);
80 }
81
82 bool Signal::enabled() const
83 {
84         return base_->enabled();
85 }
86
87 shared_ptr<data::SignalBase> Signal::base() const
88 {
89         return base_;
90 }
91
92 void Signal::set_current_segment(const int segment)
93 {
94         current_segment_ = segment;
95 }
96
97 int Signal::get_current_segment() const
98 {
99         return current_segment_;
100 }
101
102 void Signal::save_settings(QSettings &settings) const
103 {
104         (void)settings;
105 }
106
107 void Signal::restore_settings(QSettings &settings)
108 {
109         (void)settings;
110 }
111
112 void Signal::paint_back(QPainter &p, ViewItemPaintParams &pp)
113 {
114         if (base_->enabled())
115                 Trace::paint_back(p, pp);
116 }
117
118 void Signal::populate_popup_form(QWidget *parent, QFormLayout *form)
119 {
120         name_widget_ = new QComboBox(parent);
121         name_widget_->setEditable(true);
122         name_widget_->setCompleter(nullptr);
123
124         for (unsigned int i = 0; i < countof(ChannelNames); i++)
125                 name_widget_->insertItem(i, ChannelNames[i]);
126
127         const int index = name_widget_->findText(base_->name(), Qt::MatchExactly);
128
129         if (index == -1) {
130                 name_widget_->insertItem(0, base_->name());
131                 name_widget_->setCurrentIndex(0);
132         } else {
133                 name_widget_->setCurrentIndex(index);
134         }
135
136         connect(name_widget_, SIGNAL(editTextChanged(const QString&)),
137                 this, SLOT(on_nameedit_changed(const QString&)));
138
139         form->addRow(tr("Name"), name_widget_);
140
141         add_colour_option(parent, form);
142 }
143
144 QMenu* Signal::create_context_menu(QWidget *parent)
145 {
146         QMenu *const menu = Trace::create_context_menu(parent);
147
148         menu->addSeparator();
149
150         QAction *const disable = new QAction(tr("Disable"), this);
151         disable->setShortcuts(QKeySequence::Delete);
152         connect(disable, SIGNAL(triggered()), this, SLOT(on_disable()));
153         menu->addAction(disable);
154
155         return menu;
156 }
157
158 void Signal::delete_pressed()
159 {
160         on_disable();
161 }
162
163 void Signal::on_name_changed(const QString &text)
164 {
165         // On startup, this event is fired when a session restores signal
166         // names. However, the name widget hasn't yet been created.
167         if (!name_widget_)
168                 return;
169
170         if (text != name_widget_->currentText())
171                 name_widget_->setEditText(text);
172
173         Trace::on_name_changed(text);
174 }
175
176 void Signal::on_disable()
177 {
178         base_->set_enabled(false);
179 }
180
181 void Signal::on_enabled_changed(bool enabled)
182 {
183         (void)enabled;
184
185         if (owner_)
186                 owner_->extents_changed(true, true);
187 }
188
189 } // namespace trace
190 } // namespace views
191 } // namespace pv