toolbar.cpp

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#include "../../shared/settings.h"
#include "../net/serverconnection.h"
#include "../vnc/vncwindow.h"
#include "../vnc/vncserver.h"
#include "../informationdialog/informationdialog.h"
#include "../clientapp/clientapp.h"
#include "../addons/addons.h"

#include "toolbar.h"
#include "ui_toolbar.h"

#include <QNetworkInterface>
#include <QScreen>
#include <QMenu>
#include <QMouseEvent>
#include <QMessageBox>

Toolbar::Toolbar(const QByteArray& sessionName, QWidget *parent)
   : QWidget(parent)
    , _showTimer(this)
    , _hideTimer(this)
    , _hideCountdown(10)
    , _blinkTimer(this)
    , _beWatchedEye(":eye")
{
   qDebug() << "sessionName - constructor";
   init();

   clientApp->connectWindow()->connectToSession(sessionName, "");
}

Toolbar::Toolbar(const bool autoConnect, QWidget *parent)
   : QWidget(parent)
    , _showTimer(this)
    , _hideTimer(this)
    , _hideCountdown(10)
    , _blinkTimer(this)
    , _beWatchedEye(":eye")
{
   qDebug() << "auto - constructor!";
   init();


   if (autoConnect) {
      // Try getting manager ip.
      QString mgrIp = identifyMgrIP();
      if (!mgrIp.isEmpty())
         clientApp->connectWindow()->connectToSession("", mgrIp);
   }
}

Toolbar::Toolbar(QWidget *parent)
   : QWidget(parent), _showTimer(this), _hideTimer(this), _hideCountdown(10), _blinkTimer(this), _beWatchedEye(":eye")
{
   init();
}

void Toolbar::exit()
{
   this->close();
   this->deleteLater();
   qApp->quit();
}

void Toolbar::init()
{
   _ui = new Ui::Toolbar;
   /* Initialize the GUI */
   _ui->setupUi(this);

   /* Set window properties */
   setWindowFlags(Qt::WindowStaysOnTopHint | Qt::X11BypassWindowManagerHint | Qt::FramelessWindowHint);
   setAttribute(Qt::WA_AlwaysShowToolTips);
   setAttribute(Qt::WA_QuitOnClose, false);
   setAttribute(Qt::WA_DeleteOnClose, false);

   /* Create the VNC Window */
   _vnc = new VncWindow(nullptr);

   /* Create the connect window */
   clientApp->connectWindow()->setAvailableRooms(myRooms());
   // Connect the signals
   connect(clientApp->connectWindow(), &ConnectWindow::disconnect, this, &Toolbar::onDoDisconnect);
   connect(clientApp->connectWindow(), &ConnectWindow::connected, this, &Toolbar::onConnected);
   connect(_ui->btnAttention, &QToolButton::toggled, this, &Toolbar::onBtnAttention);

   /* Setup menu */
   initButtonsAndMenus();

   /* hide attention button while disconnected */
   _ui->btnAttention->setVisible(false);
   _ui->btnAttention->setMaximumWidth(30);

   /* Connect the signals from vnc server */
   connect(VncServer::instance(), &VncServer::started, this, &Toolbar::onVncServerIsRunning);

   /* React to screen geometry change */
   connect(QGuiApplication::primaryScreen(), &QScreen::availableGeometryChanged, this, &Toolbar::setToolbarPosition);

   /* Detect task bars and set position */
   const QRect availableScreen = QGuiApplication::primaryScreen()->availableGeometry();
   setToolbarPosition(availableScreen);

   /* Setup show & hide timer */
   _showTimer.setInterval(500);
   _showTimer.setSingleShot(true);
   connect(&_showTimer, &QTimer::timeout, this, &Toolbar::showBar);
   _hideTimer.setInterval(50);
   _hideTimer.setSingleShot(false);
   connect(&_hideTimer, &QTimer::timeout, this, &Toolbar::hideBar);

   setVisible(true);
   raise();
   _hideTimer.start(); // initially show PVS and hide later

   /* Setup blink timer */
   _blinkTimer.setInterval(500);
   connect(&_blinkTimer, &QTimer::timeout, this, &Toolbar::cameraBlink);
}

static QFrame* makeVerticalLine() {
   auto *f = new QFrame();
   f->setFrameShape(QFrame::HLine);
   f->setFrameShadow(QFrame::Sunken);
   return f;
}

void Toolbar::initButtonsAndMenus()
{
   QList<QPushButton*> buttons;
   QList<QAction*> menus;
   auto settings = clientApp->getSettings();
   AddonManager::loadFromPath(settings->value("addonConfigDir", "/opt/openslx/pvs2/addons").toString(), buttons, menus);
   // Buttons
   if (!buttons.isEmpty()) {
      _ui->buttonContainer->addWidget(makeVerticalLine());
      for (auto i : buttons) {
         _ui->buttonContainer->addWidget(i);
         i->setVisible(false);
      }
      _ui->buttonContainer->addWidget(makeVerticalLine());
   }
   // Menu
   _menu = new QMenu(this);
   _acnConnect = new QAction(tr("&Connect..."), this);
   _acnDisconnect = new QAction(tr("&Disconnect"), this);
   _acnDisconnect->setEnabled(false);
   _acnInformation = new QAction(tr("&Information..."), this);
   _acnAbout = new QAction(tr("&What's this?"), this);
   _acnQuit = new QAction(tr("&Quit"), this);

   _menu->addAction(_acnConnect);
   _menu->addAction(_acnDisconnect);
   _menu->addSeparator();
   for (auto i : menus) {
      _menu->addAction(i);
      i->setVisible(false);
   }
   _menu->addAction(_acnInformation);
   _menu->addAction(_acnAbout);
   _menu->addSeparator();
   _menu->addAction(_acnQuit);
   _ui->cmdMenu->setMenu(_menu);

   /* only add a "quit"-button when the configuration allows it. */
   bool allow = settings->value("allowClientQuit").toBool();
   _acnQuit->setVisible(allow);

   // Connect the signals
   connect(_menu, &QMenu::aboutToHide, this, &Toolbar::delayedHideBar);
   connect(_acnConnect, &QAction::triggered, clientApp->connectWindow(), &ConnectWindow::doShow);
   connect(_acnDisconnect, &QAction::triggered, clientApp->connectWindow(), &ConnectWindow::DoDisconnect);
   connect(_acnInformation, &QAction::triggered, this, &Toolbar::showInformationDialog);
   connect(_acnAbout, &QAction::triggered, this, &Toolbar::showAboutDialog);
   connect(_acnQuit, &QAction::triggered, this, &Toolbar::exit);

   // Delay until bar is visible
   QTimer::singleShot(10, [=]() {
      AddonManager::initControls();
   });
}

Toolbar::~Toolbar()
{
   VncServer::instance()->stop();
   _vnc->deleteLater();
   delete _ui;
}

/*
 * Override
 */

void Toolbar::enterEvent(QEvent* e)
{
   delayedShowBar();
   QWidget::enterEvent(e);
}

void Toolbar::mousePressEvent(QMouseEvent* e)
{
   _lastDragPos = e->globalPos();
}

void Toolbar::mouseMoveEvent(QMouseEvent* e)
{
   const QPoint currentPos = e->globalPos();
   const QPoint offset = currentPos - _lastDragPos;
   _lastDragPos = currentPos;
   move(x() + offset.x(), y());
}

/*
*  CFG to test this
*  http://git.openslx.org/tm-scripts.git/plain/server/modules/pvs2-freiburg/etc/xdg/openslx/pvs2client.ini
*
*/


/* returns a sorted list of available rooms.
 * (Available means that this client is configured to be in that room) */
QList<Room> Toolbar::myRooms()
{

   QList<Room> myRooms;

   auto conf = clientApp->getSettings();

   if (!conf->contains("rooms")) {
      qDebug() << "Invalid config file!";
      return myRooms;
   }

   QStringList roomNames = conf->value("rooms").toStringList();

   /* go through all rooms and check if this client is a member of the room. */
   auto localAddresses = QNetworkInterface::allAddresses();
   for (auto roomName : roomNames) {
      conf->beginGroup(roomName);
      if (conf->contains("name")) {
         roomName = conf->value("name").toString();
      }
      if (!conf->contains("mgrIP")) {
         qDebug() << "Room " << roomName << " has no mgrIP: Invalid config file!";
      }
      QString mgrIP = conf->value("mgrIP").toString();
      int priority = conf->value("priority").toInt();

      if (mgrIP.length() != 0) {
         foreach (const QHostAddress & address, localAddresses) {
            int size = conf->beginReadArray("client");
            for (int j = 0; j < size; ++j) {
               conf->setArrayIndex(j);
               QString ip = conf->value("ip").toString();
               if (address != QHostAddress(QHostAddress::LocalHost)
                       && ip == address.toString() ) {
                  /* add this room to the list */
                  Room r(roomName, mgrIP, priority);
                  myRooms << r;
                  break;
               }
            }
            conf->endArray();
         }
      }
      conf->endGroup();
   }
   /* sort */
   qStableSort(myRooms.begin(), myRooms.end(), qGreater<Room>());
   return myRooms;
}
QString Toolbar::identifyMgrIP()
{
   QList<Room> rooms = myRooms();
   if (!rooms.empty()) {
      return rooms.first().mgr;
   } else {
      return "";
   }
}

/*
 * Slots
 */

void Toolbar::cameraBlink()
{
   static bool showEye = false;
   if (!showEye) {
      _ui->icon_cam->setPixmap(_beWatchedEye);
      showEye = true;
   } else {
      _ui->icon_cam->setPixmap(QPixmap()); // set empty pixmap for blinking effect
      showEye = false;
   }
}

void Toolbar::onVncServerIsRunning(int port)
{
   if (port > 0) {
      _blinkTimer.start();
      _ui->lblStatus->setStyleSheet("color:red");
      _ui->lblStatus->setText(tr("Streaming"));
      showBar();
   }  else {
      _blinkTimer.stop();
      _ui->icon_cam->setPixmap(QPixmap());
      _ui->lblStatus->setStyleSheet("color:green");
      _ui->lblStatus->setText(tr("Online"));
      delayedHideBar();
   }
}

void Toolbar::onDisconnected(ServerConnection* connection)
{
   if (connection != nullptr) {
      disconnect(connection, &ServerConnection::disconnected, this, &Toolbar::onDisconnected);
   }
   _ui->lblStatus->setStyleSheet("color:red");
   _ui->lblStatus->setText(tr("Offline"));

   this->_acnConnect->setEnabled(true);
   this->_acnDisconnect->setEnabled(false);
   _ui->btnAttention->setVisible(false);
   onBtnAttention();
   delayedHideBar();
   AddonManager::disconnectEvent();
}

void Toolbar::onConnected(ServerConnection* connection)
{
   this->_acnConnect->setEnabled(false);
   this->_acnDisconnect->setEnabled(true);

   _ui->btnAttention->setChecked(false);
   _ui->lblStatus->setStyleSheet("color:green");
   _ui->lblStatus->setText(tr("Online"));
   /* connected, show button */
   _ui->btnAttention->setVisible(true);
   AddonManager::connectEvent(connection->isLocalConnection(), connection->getPeerAdress());
   //
   connect(connection, &ServerConnection::disconnected, this, &Toolbar::onDisconnected);
   connect(connection, &ServerConnection::openVnc,
           _vnc, &VncWindow::open);
   connect(connection, &ServerConnection::closeVnc, _vnc, &VncWindow::close);
   connect(connection, &ServerConnection::attentionChanged, this, &Toolbar::onServerAttentionChanged);
   connect(_vnc, &VncWindow::running, connection, &ServerConnection::onVncViewerStartStop);
}

void Toolbar::onDoDisconnect()
{
   if (clientApp->connection() != nullptr)
      clientApp->connection()->disconnectFromServer();
}

void Toolbar::onServerAttentionChanged(const bool on)
{
   _ui->btnAttention->setChecked(on);
   if (on) {
      showBar();
   } else {
      delayedHideBar();
   }
}

void Toolbar::hideBar()
{
   // Don't hide window if any menu is open or VNC Server is running from this client.
   if (_ui->btnAttention->isChecked() || VncServer::instance()->isVncServerRunning()) {
      _hideTimer.stop();
      return;
   }
   // These don't qualify for hiding, but don't stop timer
   if (_menu->isVisible() || this->underMouse())
      return;
   // Countdown
   if (--_hideCountdown > 0)
      return;
   _hideTimer.stop();
   move(x(), _yPosHidden);
}

void Toolbar::delayedHideBar()
{
   _showTimer.stop();
   if (!_hideTimer.isActive()) {
      _hideCountdown = 10;
      _hideTimer.start();
   }
}

void Toolbar::showBar()
{
   move(x(), _yPos);
   delayedHideBar();
}

void Toolbar::delayedShowBar()
{
   _hideTimer.stop();
   if (!_showTimer.isActive()) {
      _showTimer.start();
   }
}

void Toolbar::showAboutDialog()
{
   QMessageBox msgBox(
       QMessageBox::NoIcon,
       tr("About PVS Client"),
       tr("The PVS - client is part of a software system for managing the "\
          "virtual data traffic within the computer pools, between the tutor's "\
          "and student's PCs. It has been developed to simplify the information "\
          "traffic in seminars and general eLearning."),
       QMessageBox::NoButton,
       this,
       Qt::Dialog | Qt::MSWindowsFixedSizeDialogHint | Qt::WindowStaysOnTopHint);
   msgBox.setIconPixmap(QIcon(":cam32.svg").pixmap(64, 64));
   msgBox.exec();
}

void Toolbar::showInformationDialog()
{
   auto* d = new InformationDialog();
   d->exec();
   d->deleteLater();
}

void Toolbar::onBtnAttention()
{
   const bool on = clientApp->connection() != nullptr && _ui->btnAttention->isChecked();
   if (on != _ui->btnAttention->isChecked()) {
      _ui->btnAttention->setChecked(on);
      return;
   }
   if (clientApp->connection() != nullptr) {
      clientApp->connection()->sendAttention(on);
   }
}

void Toolbar::setToolbarPosition(const QRect &availableGeometry)
{
   const QRect primaryScreen = QGuiApplication::primaryScreen()->geometry();
   // set center position
   const int centerPos = primaryScreen.left() + (primaryScreen.width() - this->width()) / 2;

   // detect system task bars
   if (primaryScreen.height() > availableGeometry.height() && primaryScreen.y() < availableGeometry.y()) {
      // system task bar already in top position, prefer to show toolbar on bottom
      _yPos = primaryScreen.height() - this->height();
      _yPosHidden = primaryScreen.height()  - 2;
   } else {
      // no task bars at all or a bottom task bar, either way show our toolbar on top
      _yPos = primaryScreen.top();
      _yPosHidden = _yPos - this->height() + 2;
   }
   move(centerPos, _yPos);
   delayedShowBar();
}