8dd329e0f7fd947c08717068e58dd4999307c827
[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 "pv/data/signalbase.hpp"
35
36 #include "signal.hpp"
37 #include "view.hpp"
38
39 using std::shared_ptr;
40 using std::make_shared;
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<data::SignalBase> channel) :
64         Trace(channel),
65         session_(session),
66         scale_handle_(make_shared<SignalScaleHandle>(*this)),
67         items_({scale_handle_}),
68         name_widget_(nullptr)
69 {
70         assert(base_);
71
72         connect(base_.get(), SIGNAL(enabled_changed(bool)),
73                 this, SLOT(on_enabled_changed(bool)));
74 }
75
76 void Signal::set_name(QString name)
77 {
78         Trace::set_name(name);
79
80         if (name != name_widget_->currentText())
81                 name_widget_->setEditText(name);
82 }
83
84 bool Signal::enabled() const
85 {
86         return base_->enabled();
87 }
88
89 shared_ptr<data::SignalBase> Signal::base() const
90 {
91         return base_;
92 }
93
94 const ViewItemOwner::item_list& Signal::child_items() const
95 {
96         return items_;
97 }
98
99 void Signal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
100 {
101         if (base_->enabled())
102                 Trace::paint_back(p, pp);
103 }
104
105 void Signal::populate_popup_form(QWidget *parent, QFormLayout *form)
106 {
107         name_widget_ = new QComboBox(parent);
108         name_widget_->setEditable(true);
109         name_widget_->setCompleter(nullptr);
110
111         for (unsigned int i = 0; i < countof(ChannelNames); i++)
112                 name_widget_->insertItem(i, ChannelNames[i]);
113
114         const int index = name_widget_->findText(base_->name(), Qt::MatchExactly);
115
116         if (index == -1) {
117                 name_widget_->insertItem(0, base_->name());
118                 name_widget_->setCurrentIndex(0);
119         } else {
120                 name_widget_->setCurrentIndex(index);
121         }
122
123         connect(name_widget_, SIGNAL(editTextChanged(const QString&)),
124                 this, SLOT(on_nameedit_changed(const QString&)));
125
126         form->addRow(tr("Name"), name_widget_);
127
128         add_colour_option(parent, form);
129 }
130
131 QMenu* Signal::create_context_menu(QWidget *parent)
132 {
133         QMenu *const menu = Trace::create_context_menu(parent);
134
135         menu->addSeparator();
136
137         QAction *const disable = new QAction(tr("Disable"), this);
138         disable->setShortcuts(QKeySequence::Delete);
139         connect(disable, SIGNAL(triggered()), this, SLOT(on_disable()));
140         menu->addAction(disable);
141
142         return menu;
143 }
144
145 void Signal::delete_pressed()
146 {
147         on_disable();
148 }
149
150 void Signal::on_name_changed(const QString &text)
151 {
152         // On startup, this event is fired when a session restores signal
153         // names. However, the name widget hasn't yet been created.
154         if (!name_widget_)
155                 return;
156
157         if (text != name_widget_->currentText())
158                 name_widget_->setEditText(text);
159
160         Trace::on_name_changed(text);
161 }
162
163 void Signal::on_disable()
164 {
165         base_->set_enabled(false);
166 }
167
168 void Signal::on_enabled_changed(bool enabled)
169 {
170         (void)enabled;
171
172         if (owner_)
173                 owner_->extents_changed(true, true);
174 }
175
176 } // namespace view
177 } // namespace pv