pv/dialogs/storeprogress.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2014 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 <cassert>
  21
  22 #include <QMessageBox>
  23
  24 #include "pv/session.hpp"
  25
  26 #include "storeprogress.hpp"
  27
  28 using std::map;
  29 using std::pair;
  30 using std::shared_ptr;
  31 using std::string;
  32
  33 using Glib::VariantBase;
  34
  35 namespace pv {
  36 namespace dialogs {
  37
  38 StoreProgress::StoreProgress(const QString &file_name,
  39         const shared_ptr<sigrok::OutputFormat> output_format,
  40         const map<string, VariantBase> &options,
  41         const pair<uint64_t, uint64_t> sample_range,
  42         const Session &session, QWidget *parent) :
  43         QProgressDialog(tr("Saving..."), tr("Cancel"), 0, 0, parent),
  44         session_(file_name.toStdString(), output_format, options, sample_range,
  45                 session)
  46 {
  47         connect(&session_, SIGNAL(progress_updated()),
  48                 this, SLOT(on_progress_updated()));
  49         connect(&session_, SIGNAL(store_successful()),
  50                 &session, SLOT(on_data_saved()));
  51 }
  52
  53 StoreProgress::~StoreProgress()
  54 {
  55         session_.wait();
  56 }
  57
  58 void StoreProgress::run()
  59 {
  60         if (session_.start())
  61                 show();
  62         else
  63                 show_error();
  64 }
  65
  66 void StoreProgress::show_error()
  67 {
  68         QMessageBox msg(parentWidget());
  69         msg.setText(tr("Failed to save session."));
  70         msg.setInformativeText(session_.error());
  71         msg.setStandardButtons(QMessageBox::Ok);
  72         msg.setIcon(QMessageBox::Warning);
  73         msg.exec();
  74 }
  75
  76 void StoreProgress::closeEvent(QCloseEvent*)
  77 {
  78         session_.cancel();
  79 }
  80
  81 void StoreProgress::on_progress_updated()
  82 {
  83         const pair<int, int> p = session_.progress();
  84         assert(p.first <= p.second);
  85
  86         if (p.second) {
  87                 setValue(p.first);
  88                 setMaximum(p.second);
  89         } else {
  90                 const QString err = session_.error();
  91                 if (!err.isEmpty())
  92                         show_error();
  93                 close();
  94         }
  95 }
  96
  97 } // dialogs
  98 } // pv