Session: Improve session robustness
[pulseview.git] / pv / view / 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, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
19  */
20
21 #include <extdef.h>
22
23 #include <assert.h>
24 #include <cmath>
25
26 #include <QApplication>
27 #include <QFormLayout>
28 #include <QKeyEvent>
29 #include <QLineEdit>
30 #include <QMenu>
31
32 #include <libsigrokcxx/libsigrokcxx.hpp>
33
34 #include "signal.hpp"
35 #include "view.hpp"
36
37 using std::shared_ptr;
38 using std::make_shared;
39
40 using sigrok::Channel;
41
42 namespace pv {
43 namespace view {
44
45 const char *const ChannelNames[] = {
46         "CLK",
47         "DATA",
48         "IN",
49         "OUT",
50         "RST",
51         "TX",
52         "RX",
53         "EN",
54         "SCLK",
55         "MOSI",
56         "MISO",
57         "/SS",
58         "SDA",
59         "SCL"
60 };
61
62 Signal::Signal(pv::Session &session,
63         std::shared_ptr<sigrok::Channel> channel) :
64         Trace(QString::fromUtf8(channel->name().c_str())),
65         session_(session),
66         channel_(channel),
67         scale_handle_(make_shared<SignalScaleHandle>(*this)),
68         items_({scale_handle_}),
69         name_widget_(nullptr)
70 {
71         assert(channel_);
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         // Store the channel name in sigrok::Channel so that it
82         // will end up in the .sr file upon save.
83         channel_->set_name(name.toUtf8().constData());
84 }
85
86 bool Signal::enabled() const
87 {
88         return channel_->enabled();
89 }
90
91 void Signal::enable(bool enable)
92 {
93         channel_->set_enabled(enable);
94
95         if (owner_)
96                 owner_->extents_changed(true, true);
97 }
98
99 shared_ptr<Channel> Signal::channel() const
100 {
101         return channel_;
102 }
103
104 const ViewItemOwner::item_list& Signal::child_items() const
105 {
106         return items_;
107 }
108
109 void Signal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
110 {
111         if (channel_->enabled())
112                 Trace::paint_back(p, pp);
113 }
114
115 void Signal::populate_popup_form(QWidget *parent, QFormLayout *form)
116 {
117         name_widget_ = new QComboBox(parent);
118         name_widget_->setEditable(true);
119         name_widget_->setCompleter(nullptr);
120
121         for (unsigned int i = 0; i < countof(ChannelNames); i++)
122                 name_widget_->insertItem(i, ChannelNames[i]);
123
124         const int index = name_widget_->findText(name_, Qt::MatchExactly);
125
126         if (index == -1) {
127                 name_widget_->insertItem(0, name_);
128                 name_widget_->setCurrentIndex(0);
129         } else {
130                 name_widget_->setCurrentIndex(index);
131         }
132
133         connect(name_widget_, SIGNAL(editTextChanged(const QString&)),
134                 this, SLOT(on_text_changed(const QString&)));
135
136         form->addRow(tr("Name"), name_widget_);
137
138         add_colour_option(parent, form);
139 }
140
141 QMenu* Signal::create_context_menu(QWidget *parent)
142 {
143         QMenu *const menu = Trace::create_context_menu(parent);
144
145         menu->addSeparator();
146
147         QAction *const disable = new QAction(tr("Disable"), this);
148         disable->setShortcuts(QKeySequence::Delete);
149         connect(disable, SIGNAL(triggered()), this, SLOT(on_disable()));
150         menu->addAction(disable);
151
152         return menu;
153 }
154
155 void Signal::delete_pressed()
156 {
157         on_disable();
158 }
159
160 void Signal::on_disable()
161 {
162         enable(false);
163 }
164
165 } // namespace view
166 } // namespace pv