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