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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <extdef.h>
  21
  22 #include <assert.h>
  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 TraceView {
  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 void Signal::save_settings(QSettings &settings) const
  95 {
  96         (void)settings;
  97 }
  98
  99 void Signal::restore_settings(QSettings &settings)
 100 {
 101         (void)settings;
 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 (base_->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(base_->name(), Qt::MatchExactly);
 125
 126         if (index == -1) {
 127                 name_widget_->insertItem(0, base_->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_nameedit_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_name_changed(const QString &text)
 161 {
 162         // On startup, this event is fired when a session restores signal
 163         // names. However, the name widget hasn't yet been created.
 164         if (!name_widget_)
 165                 return;
 166
 167         if (text != name_widget_->currentText())
 168                 name_widget_->setEditText(text);
 169
 170         Trace::on_name_changed(text);
 171 }
 172
 173 void Signal::on_disable()
 174 {
 175         base_->set_enabled(false);
 176 }
 177
 178 void Signal::on_enabled_changed(bool enabled)
 179 {
 180         (void)enabled;
 181
 182         if (owner_)
 183                 owner_->extents_changed(true, true);
 184 }
 185
 186 } // namespace TraceView
 187 } // namespace views
 188 } // namespace pv