/*
 * toolbar.cpp
 *
 *  Created on: 21.01.2013
 *      Author: sr
 */

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

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

/***************************************************************************//**
 * Constructor of the Toolbar. Constructs a widget which is a child of parent.
 * Initialize the GUI and sets up the menu, sets window properties, create the
 * VNC- and connect-window, connects the necessary signals, sets the UI's
 * position and configuires the timer for the UI to be hidden.
 * @param parent If parent is 0, the new widget becomes a window. If parent is
 * another widget, this widget becomes a child window inside parent. The new
 * widget is deleted when its parent is deleted.
 */
Toolbar::Toolbar(QWidget *parent) :
	QWidget(parent), _ui(new Ui::Toolbar), _hideTimer(this), _connection(NULL),
	_blinkTimer(this),_cam32(":cam32.svg"),	_camOff32(":cam_off32.svg")
{
	/* Initialize the GUI */
	_ui->setupUi(this);

	/* Set window properties */
	setWindowFlags(Qt::WindowStaysOnTopHint | Qt::X11BypassWindowManagerHint | Qt::FramelessWindowHint);
	setAttribute(Qt::WA_AlwaysShowToolTips);
	setAttribute(Qt::WA_QuitOnClose);
	setVisible(true);

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

	/* Create the connect window */
	_connectWindow = new ConnectWindow(NULL);
	// Connect the signals
	connect(_connectWindow, SIGNAL(disconnect()), this, SLOT(onDoDisconnect()));
	connect(_connectWindow, SIGNAL(connected(ServerConnection*)), this, SLOT(onConnected(ServerConnection*)));

	/* Setup menu */
	_menu = new QMenu(this);
	_acnDisconnect = new QAction(tr("Set &session ID"), this);
	_acnQuit = new QAction(tr("&Quit"), this);
	_menu->addAction(_acnDisconnect);
	_menu->addSeparator();
	_menu->addAction(_acnQuit);
	_ui->cmdMenu->setMenu(_menu);
	// Connect the signals
	connect(_menu, SIGNAL(aboutToHide()), this, SLOT(hideBar()));
	connect(_acnDisconnect, SIGNAL(triggered()), _connectWindow, SLOT(show()));
	connect(_acnQuit, SIGNAL(triggered()), qApp, SLOT(quit()));

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

	/* Set position */
	const QDesktopWidget desktop;
	const QRect primaryScreen = desktop.screenGeometry();
	move(primaryScreen.left() + (primaryScreen.width() - this->width())/2 , primaryScreen.top());
	qDebug() << primaryScreen.left() << primaryScreen.top() << primaryScreen.right() << primaryScreen.bottom();

	/* Setup hide timer */
	_hideTimer.setInterval(500);
	_hideTimer.setSingleShot(true);
	connect(&_hideTimer, SIGNAL(timeout()), this, SLOT(hideBar()));
	_hideTimer.start(); // initially show PVS and hide later

	/* Setup blink timer */
	_blinkTimer.setInterval(500);
	connect(&_blinkTimer, SIGNAL(timeout()), this, SLOT(cameraBlink()));
}


/***************************************************************************//**
 * Destructor of the Toolbar. Destroys the widget. All this widget's children
 * are deleted first.
 */
Toolbar::~Toolbar()
{
	VncServer::instance()->stop();
	_vnc->deleteLater();
	_connectWindow->deleteLater();
	delete _ui;
}

/*
 * Override
 */

/***************************************************************************//**
 * This event is reimplemented to receive widget leave events. When the mouse
 * cursor leaves the widget, a timer gets started which, when timed out, hides
 * the Toolbar.
 * @param e The leave event (Mouse leaves widget's boundaries.)
 */
void Toolbar::leaveEvent(QEvent* e)
{
	_hideTimer.start();
	QWidget::leaveEvent(e);
}


/***************************************************************************//**
 * This event is reimplemented to receive widget enter events. When the mouse
 * cursor enters the widget, the timer  which, when timed out, hides
 * the Toolbar, gets stopped.
 * @param e The enter event (Mouse enters widget's boundaries.)
 */
void Toolbar::enterEvent(QEvent* e)
{
	_hideTimer.stop();
	showBar();
	QWidget::enterEvent(e);
}

/*
 * Slots
 */

/***************************************************************************//**
 * A slot for changing the camera icon. This slot should be called permanently
 * if the vnc server is recording  the screen.
 */
void Toolbar::cameraBlink()
{
	static bool showRedDot = false;
	if (!showRedDot)
	{
		_ui->icon_cam->setPixmap(_camOff32);
		showRedDot = true;
	}
	else
	{
		_ui->icon_cam->setPixmap(_cam32);
		showRedDot = false;
	}
}

/***************************************************************************//**
 * A slot for the VncServerIsRunning signal. This slot will change the UI
 * according to the state fo the VncServer.
 * @param[in] port Indicates the state of the VncServer.
 */
void Toolbar::onVncServerIsRunning(int port)
{
	if (port > 0){
		_blinkTimer.start();
		_ui->lblStatus->setStyleSheet("color:red");
		_ui->lblStatus->setText(tr("Recording"));
		showBar();
	}	else {
		_blinkTimer.stop();
		_ui->icon_cam->setPixmap(_cam32);
		_ui->lblStatus->setStyleSheet("color:green");
		_ui->lblStatus->setText(tr("Online"));
		hideBar();
	}
}

/***************************************************************************//**
 * A slot for the onDisconnected signal of the ConnectWindow. This slot will
 * change the UI according to the state fo the connection.
 */
void Toolbar::onDisconnected()
{
	_connectWindow->setConnected(false);
		if (_connection != NULL)
		_connection->blockSignals(true);
	_connection = NULL;
	_ui->lblStatus->setStyleSheet("color:red");
	_ui->lblStatus->setText(tr("Offline"));
}

/***************************************************************************//**
 * A slot for the onConnected signal of the ConnectWindow. This slot will
 * change the UI according to the state of the connection and connect the
 * relevant signals and slots.
 * @param connection Pointer to the ServerConnection
 */
void Toolbar::onConnected(ServerConnection* connection)
{
	_ui->lblStatus->setStyleSheet("color:green");
	_ui->lblStatus->setText(tr("Online"));
	//
	if (_connection != NULL)
	{
		disconnect(_connection, SIGNAL(disconnected()), this, SLOT(onDisconnected()));
		_connection->blockSignals(true);
		_connection->disconnectFromServer();
	}
	_connection = connection;
	connect(_connection, SIGNAL(disconnected()), this, SLOT(onDisconnected()));
	connect(_connection, SIGNAL(openVnc(const QString&, int, const QString&, bool, bool, const QString&, const int)),
		_vnc, SLOT(open(const QString&, int, const QString&, bool, bool, const QString&, const int)));
	connect(_connection, SIGNAL(closeVnc()), _vnc, SLOT(close()));
	connect(_vnc, SIGNAL(running(const bool, const int)), _connection, SLOT(onVncViewerStartStop(const bool, const int)));
	_connectWindow->setConnected(true);
}

/***************************************************************************//**
 *
 */
void Toolbar::onDoDisconnect()
{
	if (_connection != NULL)
		_connection->disconnectFromServer();
}

/***************************************************************************//**
 * This slot hides the toolbar. Places the toolbar hidden behind the edge of the
 * screen just showing 2 pixels.
 */
void Toolbar::hideBar()
{
	// Don't hide window if any menu is open or VNC Server is running from this client.
	if (_menu->isVisible() || VncServer::instance()->isVncServerRunning())
		return;
	const QDesktopWidget desktop;
	const QRect primaryScreen = desktop.screenGeometry();
	move(x(), primaryScreen.top() + 2 - height());
}

/***************************************************************************//**
 * This slot shows the toolbar. Used after a hideBar().
 */
void Toolbar::showBar()
{
	const QDesktopWidget desktop;
	const QRect primaryScreen = desktop.screenGeometry();
	move(x(), primaryScreen.top());
}