pv/dialogs/connect.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012-2013 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 <cassert>
  22
  23 #include <libsigrok/libsigrok.hpp>
  24
  25 #include "connect.h"
  26
  27 #include "pv/devicemanager.h"
  28
  29 using std::list;
  30 using std::map;
  31 using std::shared_ptr;
  32 using std::string;
  33
  34 using Glib::ustring;
  35 using Glib::Variant;
  36 using Glib::VariantBase;
  37
  38 using sigrok::ConfigKey;
  39 using sigrok::Driver;
  40 using sigrok::Error;
  41 using sigrok::HardwareDevice;
  42
  43 namespace pv {
  44 namespace dialogs {
  45
  46 Connect::Connect(QWidget *parent, pv::DeviceManager &device_manager) :
  47         QDialog(parent),
  48         device_manager_(device_manager),
  49         layout_(this),
  50         form_(this),
  51         form_layout_(&form_),
  52         drivers_(&form_),
  53         serial_device_(&form_),
  54         scan_button_(tr("Scan for Devices"), this),
  55         device_list_(this),
  56         button_box_(QDialogButtonBox::Ok | QDialogButtonBox::Cancel,
  57                 Qt::Horizontal, this)
  58 {
  59         setWindowTitle(tr("Connect to Device"));
  60
  61         connect(&button_box_, SIGNAL(accepted()), this, SLOT(accept()));
  62         connect(&button_box_, SIGNAL(rejected()), this, SLOT(reject()));
  63
  64         populate_drivers();
  65         connect(&drivers_, SIGNAL(activated(int)),
  66                 this, SLOT(device_selected(int)));
  67
  68         form_.setLayout(&form_layout_);
  69         form_layout_.addRow(tr("Driver"), &drivers_);
  70
  71         form_layout_.addRow(tr("Serial Port"), &serial_device_);
  72
  73         unset_connection();
  74
  75         connect(&scan_button_, SIGNAL(pressed()),
  76                 this, SLOT(scan_pressed()));
  77
  78         setLayout(&layout_);
  79         layout_.addWidget(&form_);
  80         layout_.addWidget(&scan_button_);
  81         layout_.addWidget(&device_list_);
  82         layout_.addWidget(&button_box_);
  83 }
  84
  85 shared_ptr<HardwareDevice> Connect::get_selected_device() const
  86 {
  87         const QListWidgetItem *const item = device_list_.currentItem();
  88         if (!item)
  89                 return shared_ptr<HardwareDevice>();
  90
  91         return item->data(Qt::UserRole).value<shared_ptr<HardwareDevice>>();
  92 }
  93
  94 void Connect::populate_drivers()
  95 {
  96         for (auto entry : device_manager_.context()->drivers()) {
  97                 auto name = entry.first;
  98                 auto driver = entry.second;
  99                 /**
 100                  * We currently only support devices that can deliver
 101                  * samples at a fixed samplerate i.e. oscilloscopes and
 102                  * logic analysers.
 103                  * @todo Add support for non-monotonic devices i.e. DMMs
 104                  * and sensors.
 105                  */
 106                 bool supported_device = driver->config_check(
 107                         ConfigKey::SAMPLERATE, ConfigKey::DEVICE_OPTIONS);
 108
 109                 if (supported_device)
 110                         drivers_.addItem(QString("%1 (%2)").arg(
 111                                 driver->long_name().c_str()).arg(name.c_str()),
 112                                 qVariantFromValue(driver));
 113         }
 114 }
 115
 116 void Connect::unset_connection()
 117 {
 118         device_list_.clear();
 119         serial_device_.hide();
 120         form_layout_.labelForField(&serial_device_)->hide();
 121         button_box_.button(QDialogButtonBox::Ok)->setDisabled(true);
 122 }
 123
 124 void Connect::set_serial_connection()
 125 {
 126         serial_device_.show();
 127         form_layout_.labelForField(&serial_device_)->show();
 128 }
 129
 130 void Connect::scan_pressed()
 131 {
 132         device_list_.clear();
 133
 134         const int index = drivers_.currentIndex();
 135         if (index == -1)
 136                 return;
 137
 138         shared_ptr<Driver> driver =
 139                 drivers_.itemData(index).value<shared_ptr<Driver>>();
 140
 141         assert(driver);
 142
 143         map<const ConfigKey *, VariantBase> drvopts;
 144
 145         if (serial_device_.isVisible())
 146                 drvopts[ConfigKey::CONN] = Variant<ustring>::create(
 147                         serial_device_.text().toUtf8().constData());
 148
 149         list< shared_ptr<HardwareDevice> > devices =
 150                 device_manager_.driver_scan(driver, drvopts);
 151
 152         for (shared_ptr<HardwareDevice> device : devices)
 153         {
 154                 assert(device);
 155
 156                 QString text = QString::fromStdString(
 157                         device_manager_.get_display_name(device));
 158                 text += QString(" with %1 channels").arg(device->channels().size());
 159
 160                 QListWidgetItem *const item = new QListWidgetItem(text,
 161                         &device_list_);
 162                 item->setData(Qt::UserRole, qVariantFromValue(device));
 163                 device_list_.addItem(item);
 164         }
 165
 166         device_list_.setCurrentRow(0);
 167         button_box_.button(QDialogButtonBox::Ok)->setDisabled(device_list_.count() == 0);
 168 }
 169
 170 void Connect::device_selected(int index)
 171 {
 172         shared_ptr<Driver> driver =
 173                 drivers_.itemData(index).value<shared_ptr<Driver>>();
 174
 175         unset_connection();
 176
 177         if (driver->config_check(ConfigKey::SERIALCOMM, ConfigKey::SCAN_OPTIONS))
 178                         set_serial_connection();
 179 }
 180
 181 } // namespace dialogs
 182 } // namespace pv