pv/views/decoder_output/view.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2019 Soeren Apel <soeren@apelpie.net>
   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 <climits>
  21
  22 #include <QByteArray>
  23 #include <QDebug>
  24 #include <QLabel>
  25 #include <QMenu>
  26 #include <QToolBar>
  27 #include <QVBoxLayout>
  28
  29 #include <libsigrokdecode/libsigrokdecode.h>
  30
  31 #include "view.hpp"
  32 #include "QHexView.hpp"
  33
  34 #include "pv/session.hpp"
  35 #include "pv/util.hpp"
  36
  37 using pv::data::DecodeSignal;
  38 using pv::data::SignalBase;
  39 using pv::util::TimeUnit;
  40 using pv::util::Timestamp;
  41
  42 using std::numeric_limits;
  43 using std::shared_ptr;
  44
  45 namespace pv {
  46 namespace views {
  47 namespace decoder_output {
  48
  49 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
  50         ViewBase(session, is_main_view, parent),
  51
  52         // Note: Place defaults in View::reset_view_state(), not here
  53         signal_selector_(new QComboBox()),
  54         format_selector_(new QComboBox()),
  55         stacked_widget_(new QStackedWidget()),
  56         hex_view_(new QHexView()),
  57         signal_(nullptr),
  58         merged_data_(new QByteArray())
  59 {
  60         QVBoxLayout *root_layout = new QVBoxLayout(this);
  61         root_layout->setContentsMargins(0, 0, 0, 0);
  62
  63         // Create toolbar
  64         QToolBar* toolbar = new QToolBar();
  65         toolbar->setContextMenuPolicy(Qt::PreventContextMenu);
  66         parent->addToolBar(toolbar);
  67
  68         // Populate toolbar
  69         toolbar->addWidget(new QLabel(tr("Decoder:")));
  70         toolbar->addWidget(signal_selector_);
  71         toolbar->addSeparator();
  72         toolbar->addWidget(new QLabel(tr("Show data as")));
  73         toolbar->addWidget(format_selector_);
  74
  75         // Add format types
  76         format_selector_->addItem(tr("Hexdump"), qVariantFromValue(QString("text/hexdump")));
  77
  78         // Add widget stack
  79         root_layout->addWidget(stacked_widget_);
  80         stacked_widget_->addWidget(hex_view_);
  81         stacked_widget_->setCurrentIndex(0);
  82
  83         connect(signal_selector_, SIGNAL(currentIndexChanged(int)),
  84                 this, SLOT(on_selected_signal_changed(int)));
  85
  86         hex_view_->setData(merged_data_);
  87
  88         reset_view_state();
  89 }
  90
  91 View::~View()
  92 {
  93 }
  94
  95 ViewType View::get_type() const
  96 {
  97         return ViewTypeDecoderOutput;
  98 }
  99
 100 void View::reset_view_state()
 101 {
 102         ViewBase::reset_view_state();
 103 }
 104
 105 void View::clear_signals()
 106 {
 107         ViewBase::clear_signalbases();
 108         signal_ = nullptr;
 109 }
 110
 111 void View::clear_decode_signals()
 112 {
 113         signal_selector_->clear();
 114         format_selector_->setCurrentIndex(0);
 115         signal_ = nullptr;
 116 }
 117
 118 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
 119 {
 120         connect(signal.get(), SIGNAL(name_changed(const QString&)),
 121                 this, SLOT(on_signal_name_changed(const QString&)));
 122
 123         signal_selector_->addItem(signal->name(), QVariant::fromValue((void*)signal.get()));
 124 }
 125
 126 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
 127 {
 128         int index = signal_selector_->findData(QVariant::fromValue((void*)signal.get()));
 129
 130         if (index != -1)
 131                 signal_selector_->removeItem(index);
 132
 133         if (signal.get() == signal_) {
 134                 signal_ = nullptr;
 135                 update_data();
 136         }
 137 }
 138
 139 void View::save_settings(QSettings &settings) const
 140 {
 141         (void)settings;
 142 }
 143
 144 void View::restore_settings(QSettings &settings)
 145 {
 146         // Note: It is assumed that this function is only called once,
 147         // immediately after restoring a previous session.
 148         (void)settings;
 149 }
 150
 151 void View::update_data()
 152 {
 153         if (!signal_) {
 154                 merged_data_->clear();
 155                 return;
 156         }
 157
 158         if (signal_->get_binary_data_chunk_count(current_segment_) == 0) {
 159                 merged_data_->clear();
 160                 return;
 161         }
 162
 163         vector<uint8_t> data;
 164         signal_->get_binary_data_chunks_merged(current_segment_, 0,
 165                 numeric_limits<uint64_t>::max(), &data);
 166
 167         merged_data_->resize(data.size());
 168         memcpy(merged_data_->data(), data.data(), data.size());
 169 }
 170
 171 void View::on_selected_signal_changed(int index)
 172 {
 173         if (signal_)
 174                 disconnect(signal_, SIGNAL(new_binary_data(unsigned int)));
 175
 176         signal_ = (DecodeSignal*)signal_selector_->itemData(index).value<void*>();
 177         update_data();
 178
 179         if (signal_)
 180                 connect(signal_, SIGNAL(new_binary_data(unsigned int)),
 181                         this, SLOT(on_new_binary_data(unsigned int)));
 182 }
 183
 184 void View::on_signal_name_changed(const QString &name)
 185 {
 186         SignalBase *sb = qobject_cast<SignalBase*>(QObject::sender());
 187         assert(sb);
 188
 189         int index = signal_selector_->findData(QVariant::fromValue(sb));
 190         if (index != -1)
 191                 signal_selector_->setItemText(index, name);
 192 }
 193
 194 void View::on_new_binary_data(unsigned int segment_id)
 195 {
 196         if (segment_id == current_segment_)
 197                 update_data();
 198 }
 199
 200 } // namespace decoder_output
 201 } // namespace views
 202 } // namespace pv