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 using std::make_shared;
  40
  41 namespace pv {
  42 namespace views {
  43 namespace trace {
  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         shared_ptr<data::SignalBase> channel) :
  64         Trace(channel),
  65         session_(session),
  66         name_widget_(nullptr)
  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::save_settings(QSettings &settings) const
  93 {
  94         (void)settings;
  95 }
  96
  97 void Signal::restore_settings(QSettings &settings)
  98 {
  99         (void)settings;
 100 }
 101
 102 void Signal::paint_back(QPainter &p, ViewItemPaintParams &pp)
 103 {
 104         if (base_->enabled())
 105                 Trace::paint_back(p, pp);
 106 }
 107
 108 void Signal::populate_popup_form(QWidget *parent, QFormLayout *form)
 109 {
 110         name_widget_ = new QComboBox(parent);
 111         name_widget_->setEditable(true);
 112         name_widget_->setCompleter(nullptr);
 113
 114         for (unsigned int i = 0; i < countof(ChannelNames); i++)
 115                 name_widget_->insertItem(i, ChannelNames[i]);
 116
 117         const int index = name_widget_->findText(base_->name(), Qt::MatchExactly);
 118
 119         if (index == -1) {
 120                 name_widget_->insertItem(0, base_->name());
 121                 name_widget_->setCurrentIndex(0);
 122         } else {
 123                 name_widget_->setCurrentIndex(index);
 124         }
 125
 126         connect(name_widget_, SIGNAL(editTextChanged(const QString&)),
 127                 this, SLOT(on_nameedit_changed(const QString&)));
 128
 129         form->addRow(tr("Name"), name_widget_);
 130
 131         add_colour_option(parent, form);
 132 }
 133
 134 QMenu* Signal::create_context_menu(QWidget *parent)
 135 {
 136         QMenu *const menu = Trace::create_context_menu(parent);
 137
 138         menu->addSeparator();
 139
 140         QAction *const disable = new QAction(tr("Disable"), this);
 141         disable->setShortcuts(QKeySequence::Delete);
 142         connect(disable, SIGNAL(triggered()), this, SLOT(on_disable()));
 143         menu->addAction(disable);
 144
 145         return menu;
 146 }
 147
 148 void Signal::delete_pressed()
 149 {
 150         on_disable();
 151 }
 152
 153 void Signal::on_name_changed(const QString &text)
 154 {
 155         // On startup, this event is fired when a session restores signal
 156         // names. However, the name widget hasn't yet been created.
 157         if (!name_widget_)
 158                 return;
 159
 160         if (text != name_widget_->currentText())
 161                 name_widget_->setEditText(text);
 162
 163         Trace::on_name_changed(text);
 164 }
 165
 166 void Signal::on_disable()
 167 {
 168         base_->set_enabled(false);
 169 }
 170
 171 void Signal::on_enabled_changed(bool enabled)
 172 {
 173         (void)enabled;
 174
 175         if (owner_)
 176                 owner_->extents_changed(true, true);
 177 }
 178
 179 } // namespace trace
 180 } // namespace views
 181 } // namespace pv