community-news.cc

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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2011-2023 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Octave is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Octave; see the file COPYING.  If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
 
#if defined (HAVE_CONFIG_H)
#  include "config.h"
#endif
 
#include <QLayout>
#include <QTextBrowser>
#include <QThread>
 
#include "community-news.h"
#include "gui-utils.h"
#include "gui-preferences-dw.h"
#include "gui-preferences-nr.h"
#include "news-reader.h"
#include "octave-qobject.h"
 
OCTAVE_BEGIN_NAMESPACE(octave)
 
community_news::community_news (base_qobject& oct_qobj, int serial)
: QWidget (nullptr), m_browser (nullptr)
{
  construct (oct_qobj, "https://octave.org", "community-news.html", serial);
}
 
community_news::community_news (base_qobject& oct_qobj, QWidget *parent,
                                const QString& base_url, const QString& page,
                                int serial)
  : QWidget (parent), m_browser (nullptr)
{
  construct (oct_qobj, base_url, page, serial);
}
 
void community_news::construct (base_qobject& oct_qobj,
                                const QString& base_url, const QString& page,
                                int serial)
{
  m_browser = new QTextBrowser (this);
 
  m_browser->setObjectName ("OctaveNews");
  m_browser->setOpenExternalLinks (true);
 
  QVBoxLayout *vlayout = new QVBoxLayout;
 
  vlayout->addWidget (m_browser);
 
  setLayout (vlayout);
  setWindowTitle (tr ("Octave Community News"));
 
  int win_x, win_y;
  get_screen_geometry (win_x, win_y);
 
  resize (win_x/2, win_y/2);
  move ((win_x - width ())/2, (win_y - height ())/2);
 
  resource_manager& rmgr = oct_qobj.get_resource_manager ();
  gui_settings *settings = rmgr.get_settings ();
 
  QString icon;
  QString icon_set = settings->value (dw_icon_set).toString ();
  if (icon_set != "NONE")
    // No extra icon for Community news, take the one of the release notes
    icon = dw_icon_set_names[icon_set] + "ReleaseWidget.png";
  else
    icon = dw_icon_set_names[icon_set];
 
  setWindowIcon (QIcon (icon));
 
  // FIXME: This is a news reader preference, so shouldn't it be used
  // in the news_reader object?
 
  bool connect_to_web
    = (settings
       ? settings->value (nr_allow_connection).toBool ()
       : true);
 
  QThread *worker_thread = new QThread;
 
  news_reader *reader = new news_reader (oct_qobj, base_url, page,
                                         serial, connect_to_web);
 
  reader->moveToThread (worker_thread);
 
  connect (reader, &news_reader::display_news_signal,
           this, &community_news::set_news);
 
  connect (worker_thread, &QThread::started,
           reader, &news_reader::process);
 
  connect (reader, &news_reader::finished, worker_thread, &QThread::quit);
 
  connect (reader, &news_reader::finished, reader, &news_reader::deleteLater);
 
  connect (worker_thread, &QThread::finished,
           worker_thread, &QThread::deleteLater);
 
  worker_thread->start ();
}
 
void community_news::set_news (const QString& news)
{
  m_browser->setHtml (news);
}
 
void community_news::display (void)
{
  if (! isVisible ())
    show ();
  else if (isMinimized ())
    showNormal ();
 
  raise ();
  activateWindow ();
}
 
OCTAVE_END_NAMESPACE(octave)