/********************************************************************************
* FaceTrackNoIR		This program is a private project of the some enthusiastic	*
*					gamers from Holland, who don't like to pay much for			*
*					head-tracking.												*
*																				*
* Copyright (C) 2011	Wim Vriend (Developing)									*
*						Ron Hendriks (Researching and Testing)					*
*																				*
* Homepage																		*
*																				*
* This program 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.													*
*																				*
* This program 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 this program; if not, see <http://www.gnu.org/licenses/>.				*
*********************************************************************************/
#include "facetracknoir.h"
#include "tracker.h"
#include <ftnoir_tracker_ht/ht-api.h>
#include <QDebug>

#if defined(__WIN32) || defined(_WIN32)
#   include <windows.h>
#endif

#if defined(__APPLE__)
#   define SONAME "dylib"
#elif defined(_WIN32) || defined(__WIN32)
#   define SONAME "dll"
#else
#   define SONAME "so"
#endif

#include <iostream>

#if defined(__WIN32) || defined(_WIN32)
#undef DIRECTINPUT_VERSION
#define DIRECTINPUT_VERSION 0x0800
#include <dshow.h>
#include <dinput.h>

KeybindingWorkerDummy::~KeybindingWorkerDummy() {
    if (dinkeyboard) {
        dinkeyboard->Unacquire();
        dinkeyboard->Release();
    }
    if (din)
        din->Release();
}

KeybindingWorkerDummy::KeybindingWorkerDummy(FaceTrackNoIR& w, Key keyCenter)
: kCenter(keyCenter), window(w), should_quit(true), din(0), dinkeyboard(0)
{
    if (DirectInput8Create(GetModuleHandle(NULL), DIRECTINPUT_VERSION, IID_IDirectInput8, (void**)&din, NULL) != DI_OK) {
        qDebug() << "setup DirectInput8 Creation failed!" << GetLastError();
        return;
    }
    if (din->CreateDevice(GUID_SysKeyboard, &dinkeyboard, NULL) != DI_OK) {
        din->Release();
        din = 0;
        qDebug() << "setup CreateDevice function failed!" << GetLastError();
        return;
    }
    if (dinkeyboard->SetDataFormat(&c_dfDIKeyboard) != DI_OK) {
        qDebug() << "setup SetDataFormat function failed!" << GetLastError();
        dinkeyboard->Release();
        dinkeyboard = 0;
        din->Release();
        din = 0;
        return;
    }
    
    if (dinkeyboard->SetCooperativeLevel(window.winId(), DISCL_NONEXCLUSIVE | DISCL_BACKGROUND) != DI_OK) {
        dinkeyboard->Release();
        din->Release();
        din = 0;
        dinkeyboard = 0;
        qDebug() << "setup SetCooperativeLevel function failed!" << GetLastError();
        return;
    }
    if (dinkeyboard->Acquire() != DI_OK)
    {
        dinkeyboard->Release();
        din->Release();
        din = 0;
        dinkeyboard = 0;
        qDebug() << "setup dinkeyboard Acquire failed!" << GetLastError();
        return;
    }
    should_quit = false;
}

#define PROCESS_KEY(k, s) \
    if (isKeyPressed(&k, keystate) && (!k.ever_pressed ? (k.timer.start(), k.ever_pressed = true) : k.timer.restart() > 100)) \
        window.s();

static bool isKeyPressed( const Key *key, const BYTE *keystate ) {
    bool shift;
    bool ctrl;
    bool alt;

    if (keystate[key->keycode] & 0x80) {
        shift = ( (keystate[DIK_LSHIFT] & 0x80) || (keystate[DIK_RSHIFT] & 0x80) );
        ctrl  = ( (keystate[DIK_LCONTROL] & 0x80) || (keystate[DIK_RCONTROL] & 0x80) );
        alt   = ( (keystate[DIK_LALT] & 0x80) || (keystate[DIK_RALT] & 0x80) );

        //
        // If one of the modifiers is needed and not pressed, return false.
        //
        if (key->shift && !shift) return false;
        if (key->ctrl && !ctrl) return false;
        if (key->alt && !alt) return false;

        //
        // All is well!
        //
        return true;
    }
    return false;
}

void KeybindingWorkerDummy::run() {
    BYTE keystate[256];
    while (!should_quit)
    {
        if (dinkeyboard->GetDeviceState(256, (LPVOID)keystate) != DI_OK) {
            qDebug() << "Tracker::run GetDeviceState function failed!" << GetLastError();
            Sleep(25);
            continue;
        }
        
        PROCESS_KEY(kCenter, shortcutRecentered);
        
        Sleep(25);
    }
}
#else
#endif

#ifdef _MSC_VER
#   define LIB_PREFIX ""
#else
#   define LIB_PREFIX "lib"
#endif

//
// Setup the Main Dialog
//
FaceTrackNoIR::FaceTrackNoIR(QWidget *parent, Qt::WFlags flags) : 
    #if defined(__WIN32) || defined(_WIN32)
        keybindingWorker(NULL),
    #else
        keyCenter(0),
    #endif
    QMainWindow(parent, flags),
    pTrackerDialog(NULL),
    pSecondTrackerDialog(NULL),
    pProtocolDialog(NULL),
    pFilterDialog(NULL),
    looping(false),
    timUpdateHeadPose(this)
{	
    ui.setupUi(this);
	cameraDetected = false;

	//
	// Initialize Widget handles, to prevent memory-access errors.
	//
	_keyboard_shortcuts = 0;
	_curve_config = 0;

	tracker = 0;

	setupFaceTrackNoIR();

    //Q_INIT_RESOURCE(PoseWidget);

	ui.lblX->setVisible(false);
	ui.lblY->setVisible(false);
	ui.lblZ->setVisible(false);
	ui.lblRotX->setVisible(false);
	ui.lblRotY->setVisible(false);
	ui.lblRotZ->setVisible(false);

	ui.lcdNumOutputPosX->setVisible(false);
	ui.lcdNumOutputPosY->setVisible(false);
	ui.lcdNumOutputPosZ->setVisible(false);
	ui.lcdNumOutputRotX->setVisible(false);
	ui.lcdNumOutputRotY->setVisible(false);
	ui.lcdNumOutputRotZ->setVisible(false);
}

/** sets up all objects and connections to buttons */
void FaceTrackNoIR::setupFaceTrackNoIR() {
    // if we simply place a global variable with THeadPoseData,
    // it gets initialized and pulls in QSettings before
    // main() starts. program can and will crash.

	ui.headPoseWidget->show();
	ui.video_frame->hide();

	// menu objects will be connected with the functions in FaceTrackNoIR class
	connect(ui.btnLoad, SIGNAL(clicked()), this, SLOT(open()));
	connect(ui.btnSave, SIGNAL(clicked()), this, SLOT(save()));
	connect(ui.btnSaveAs, SIGNAL(clicked()), this, SLOT(saveAs()));

	connect(ui.btnEditCurves, SIGNAL(clicked()), this, SLOT(showCurveConfiguration()));
	connect(ui.btnShortcuts, SIGNAL(clicked()), this, SLOT(showKeyboardShortcuts()));
	connect(ui.btnShowEngineControls, SIGNAL(clicked()), this, SLOT(showTrackerSettings()));
	connect(ui.btnShowSecondTrackerSettings, SIGNAL(clicked()), this, SLOT(showSecondTrackerSettings()));
	connect(ui.btnShowServerControls, SIGNAL(clicked()), this, SLOT(showServerControls()));
	connect(ui.btnShowFilterControls, SIGNAL(clicked()), this, SLOT(showFilterControls()));

	// Connect checkboxes
	connect(ui.chkInvertYaw, SIGNAL(stateChanged(int)), this, SLOT(setInvertYaw(int)));
	connect(ui.chkInvertRoll, SIGNAL(stateChanged(int)), this, SLOT(setInvertRoll(int)));
	connect(ui.chkInvertPitch, SIGNAL(stateChanged(int)), this, SLOT(setInvertPitch(int)));
	connect(ui.chkInvertX, SIGNAL(stateChanged(int)), this, SLOT(setInvertX(int)));
	connect(ui.chkInvertY, SIGNAL(stateChanged(int)), this, SLOT(setInvertY(int)));
	connect(ui.chkInvertZ, SIGNAL(stateChanged(int)), this, SLOT(setInvertZ(int)));

	// button methods connect with methods in this class
	connect(ui.btnStartTracker, SIGNAL(clicked()), this, SLOT(startTracker()));
	connect(ui.btnStopTracker, SIGNAL(clicked()), this, SLOT(stopTracker()));

	//read the camera-name, using DirectShow
	GetCameraNameDX();
	
	//Create the system-tray and connect the events for that.
	createIconGroupBox();

    //Load the tracker-settings, from the INI-file
	loadSettings();

	connect(ui.iconcomboProtocol, SIGNAL(currentIndexChanged(int)), this, SLOT(protocolSelected(int)));
	connect(ui.iconcomboProfile, SIGNAL(currentIndexChanged(int)), this, SLOT(profileSelected(int)));
	connect(ui.iconcomboTrackerSource, SIGNAL(currentIndexChanged(int)), this, SLOT(trackingSourceSelected(int)));
	connect(ui.iconcomboFilter, SIGNAL(currentIndexChanged(int)), this, SLOT(filterSelected(int)));

	//Setup the timer for showing the headpose.
    connect(&timUpdateHeadPose, SIGNAL(timeout()), this, SLOT(showHeadPose()));
    settingsDirty = false;
}

/** destructor stops the engine and quits the faceapi **/
FaceTrackNoIR::~FaceTrackNoIR() {

	//
	// Stop the tracker, by simulating a button-push
	//
	stopTracker();
    save();
}

//
// Update the Settings, after a value has changed. This way, the Tracker does not have to re-start.
//
void FaceTrackNoIR::updateSettings() {
	if ( tracker != NULL ) {
		tracker->loadSettings();
	}
}

//
// Get a pointer to the video-widget, to use in the DLL
//
QFrame *FaceTrackNoIR::get_video_widget() {
	return ui.video_frame;
}

/** read the name of the first video-capturing device at start up **/
/** FaceAPI can only use this first one... **/
void FaceTrackNoIR::GetCameraNameDX() {
#if defined(_WIN32)
	ui.cameraName->setText("No video-capturing device was found in your system: check if it's connected!");

	// Create the System Device Enumerator.
	HRESULT hr;
	ICreateDevEnum *pSysDevEnum = NULL;
	hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, (void **)&pSysDevEnum);
	if (FAILED(hr))
	{
		qDebug() << "GetWDM says: CoCreateInstance Failed!";
		return;
	}

	qDebug() << "GetWDM says: CoCreateInstance succeeded!";
	
	// Obtain a class enumerator for the video compressor category.
	IEnumMoniker *pEnumCat = NULL;
	hr = pSysDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pEnumCat, 0);

	if (hr == S_OK) {
		qDebug() << "GetWDM says: CreateClassEnumerator succeeded!";

		// Enumerate the monikers.
		IMoniker *pMoniker = NULL;
		ULONG cFetched;
		if (pEnumCat->Next(1, &pMoniker, &cFetched) == S_OK) {
			IPropertyBag *pPropBag;
			hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, (void **)&pPropBag);
			if (SUCCEEDED(hr))	{
				// To retrieve the filter's friendly name, do the following:
				VARIANT varName;
				VariantInit(&varName);
				hr = pPropBag->Read(L"FriendlyName", &varName, 0);
				if (SUCCEEDED(hr))
				{
					// Display the name in your UI somehow.
					QString str((QChar*)varName.bstrVal, wcslen(varName.bstrVal));
					qDebug() << "GetWDM says: Moniker found:" << str;
					ui.cameraName->setText(str);
				}
				VariantClear(&varName);

				////// To create an instance of the filter, do the following:
				////IBaseFilter *pFilter;
				////hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter,
				////	(void**)&pFilter);
				// Now add the filter to the graph. 
				//Remember to release pFilter later.
				pPropBag->Release();
			}
			pMoniker->Release();
		}
		pEnumCat->Release();
	}
	pSysDevEnum->Release();
#endif
}

//
// Open an INI-file with the QFileDialog
// If succesfull, the settings in it will be read
//
void FaceTrackNoIR::open() {
     QFileDialog dialog(this);
     dialog.setFileMode(QFileDialog::ExistingFile);
     
	 QString fileName = dialog.getOpenFileName(
								this,
                                 tr("Select one FTNoir settings file"),
								 QCoreApplication::applicationDirPath() + "/Settings/",
                                 tr("Settings file (*.ini);;All Files (*)"),
                                               NULL);

	//
	// If a file was selected, save it's name and read it's contents.
	//
	if (! fileName.isEmpty() ) {
		QSettings settings("opentrack");	// Registry settings (in HK_USER)
        settings.setValue ("SettingsFile", QFileInfo(fileName).absoluteFilePath());
		loadSettings();
    }
}

//
// Save the current Settings to the currently 'active' INI-file.
//
void FaceTrackNoIR::save() {

	QSettings settings("opentrack");	// Registry settings (in HK_USER)

	QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
	QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

	iniFile.beginGroup ( "Tracking" );
	iniFile.setValue ( "invertYaw", ui.chkInvertYaw->isChecked() );
	iniFile.setValue ( "invertPitch", ui.chkInvertPitch->isChecked() );
	iniFile.setValue ( "invertRoll", ui.chkInvertRoll->isChecked() );
	iniFile.setValue ( "invertX", ui.chkInvertX->isChecked() );
	iniFile.setValue ( "invertY", ui.chkInvertY->isChecked() );
	iniFile.setValue ( "invertZ", ui.chkInvertZ->isChecked() );
	iniFile.endGroup ();

	iniFile.beginGroup ( "GameProtocol" );
    {
        DynamicLibrary* proto = dlopen_protocols.value( ui.iconcomboProtocol->currentIndex(), (DynamicLibrary*) NULL);
        iniFile.setValue ( "DLL",  proto == NULL ? "" : proto->filename);
    }
	iniFile.endGroup ();

	iniFile.beginGroup ( "TrackerSource" );
    {
        DynamicLibrary* tracker = dlopen_trackers.value( ui.iconcomboTrackerSource->currentIndex(), (DynamicLibrary*) NULL);
        iniFile.setValue ( "DLL",  tracker == NULL ? "" : tracker->filename);
    }
    {
        DynamicLibrary* tracker = dlopen_trackers.value( ui.cbxSecondTrackerSource->currentIndex() - 1, (DynamicLibrary*) NULL);
        iniFile.setValue ( "2ndDLL",  tracker == NULL ? "" : tracker->filename);
    }
	iniFile.endGroup ();

	//
	// Save the name of the filter in the INI-file.
	//
	iniFile.beginGroup ( "Filter" );
    {
        DynamicLibrary* filter = dlopen_filters.value( ui.iconcomboFilter->currentIndex(), (DynamicLibrary*) NULL);
        iniFile.setValue ( "DLL",  filter == NULL ? "" : filter->filename);
    }
	iniFile.endGroup ();

	settingsDirty = false;
}

//
// Get the new name of the INI-file and save the settings to it.
//
// The user may choose to overwrite an existing file. This will be deleted, before copying the current file to it.
//
void FaceTrackNoIR::saveAs()
{
	//
	// Get the current filename of the INI-file.
	//
	QSettings settings("opentrack");	// Registry settings (in HK_USER)
	QString oldFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();

	//
	// Get the new filename of the INI-file.
	//
	QString fileName = QFileDialog::getSaveFileName(this, tr("Save file"),
													oldFile,
//													QCoreApplication::applicationDirPath() + "/Settings",
													tr("Settings file (*.ini);;All Files (*)"));
	if (!fileName.isEmpty()) {

		//
		// Remove the file, if it already exists.
		//
		QFileInfo newFileInfo ( fileName );
		if ((newFileInfo.exists()) && (oldFile != fileName)) {
			QFile newFileFile ( fileName );
			newFileFile.remove();
		}

		//
		// Copy the current INI-file to the new name.
		//
		QFileInfo oldFileInfo ( oldFile );
		if (oldFileInfo.exists()) {
			QFile oldFileFile ( oldFile );
			oldFileFile.copy( fileName );
		}

		//
		// Write the new name to the Registry and save the other INI-values.
		//
		settings.setValue ("SettingsFile", fileName);
		save();

		//
		// Reload the settings, to get the GUI right again...
		//
		loadSettings();
	}
}

//
// Load the current Settings from the currently 'active' INI-file.
//
void FaceTrackNoIR::loadSettings() {
    looping = true;
	qDebug() << "loadSettings says: Starting ";
	QSettings settings("opentrack");	// Registry settings (in HK_USER)

	QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
    qDebug() << "Config file now" << currentFile;
	QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

	//
	// Put the filename in the window-title.
	//
    QFileInfo pathInfo ( currentFile );
    setWindowTitle ( "opentrack (1.8 alpha) - " + pathInfo.fileName() );

	//
	// Get a List of all the INI-files in the (currently active) Settings-folder.
	//
	QDir settingsDir( pathInfo.dir() );
    QStringList filters;
    filters << "*.ini";
	iniFileList.clear();
	iniFileList = settingsDir.entryList( filters, QDir::Files, QDir::Name );
	
	//
	// Add strings to the Listbox.
	//
	ui.iconcomboProfile->clear();
	for ( int i = 0; i < iniFileList.size(); i++) {
        ui.iconcomboProfile->addItem(QIcon(":/images/settings16.png"), iniFileList.at(i));
		if (iniFileList.at(i) == pathInfo.fileName()) {
            ui.iconcomboProfile->setItemIcon(i, QIcon(":/images/settingsopen16.png"));
			ui.iconcomboProfile->setCurrentIndex( i );
		}
	}

	qDebug() << "loadSettings says: iniFile = " << currentFile;

	iniFile.beginGroup ( "Tracking" );
    ui.chkInvertYaw->setChecked (iniFile.value ( "invertYaw", 0 ).toBool());
	ui.chkInvertPitch->setChecked (iniFile.value ( "invertPitch", 0 ).toBool());
	ui.chkInvertRoll->setChecked (iniFile.value ( "invertRoll", 0 ).toBool());
	ui.chkInvertX->setChecked (iniFile.value ( "invertX", 0 ).toBool());
	ui.chkInvertY->setChecked (iniFile.value ( "invertY", 0 ).toBool());
	ui.chkInvertZ->setChecked (iniFile.value ( "invertZ", 0 ).toBool());
	iniFile.endGroup ();

	// Read the currently selected Protocol from the INI-file.
	// If the setting "DLL" isn't found (pre-1.7 version of INI), then the setting 'Selection' is evaluated.
	//
	iniFile.beginGroup ( "GameProtocol" );
    QString selectedProtocolName = iniFile.value ( "DLL", "" ).toString();
    iniFile.endGroup ();

    //
	// Find the Index of the DLL and set the selection.
	//
    for ( int i = 0; i < dlopen_protocols.size(); i++) {
        if (dlopen_protocols.at(i)->filename.compare( selectedProtocolName, Qt::CaseInsensitive ) == 0) {
			ui.iconcomboProtocol->setCurrentIndex( i );
			break;
		}
	}

    //
    // Read the currently selected Tracker from the INI-file.
    // If the setting "DLL" isn't found (pre-1.7 version), then the setting 'Selection' is evaluated.
    //
    iniFile.beginGroup ( "TrackerSource" );
    QString selectedTrackerName = iniFile.value ( "DLL", "" ).toString();
    qDebug() << "loadSettings says: selectedTrackerName = " << selectedTrackerName;
    QString secondTrackerName = iniFile.value ( "2ndDLL", "None" ).toString();
    qDebug() << "loadSettings says: secondTrackerName = " << secondTrackerName;
    iniFile.endGroup ();

    for ( int i = 0; i < dlopen_trackers.size(); i++) {
        DynamicLibrary* foo = dlopen_trackers.at(i);
        if (foo && foo->filename.compare( selectedTrackerName, Qt::CaseInsensitive ) == 0) {
			ui.iconcomboTrackerSource->setCurrentIndex( i );
		}
        if (foo && foo->filename.compare( secondTrackerName, Qt::CaseInsensitive ) == 0) {
            ui.cbxSecondTrackerSource->setCurrentIndex( i + 1 );
		}
	}

	//
	// Read the currently selected Filter from the INI-file.
	//
	iniFile.beginGroup ( "Filter" );
    QString selectedFilterName = iniFile.value ( "DLL", "" ).toString();
	qDebug() << "createIconGroupBox says: selectedFilterName = " << selectedFilterName;
	iniFile.endGroup ();

	//
	// Find the Index of the DLL and set the selection.
	//
    for ( int i = 0; i < dlopen_filters.size(); i++) {
        DynamicLibrary* foo = dlopen_filters.at(i);
        if (foo && foo->filename.compare( selectedFilterName, Qt::CaseInsensitive ) == 0) {
            ui.iconcomboFilter->setCurrentIndex( i );
			break;
		}
	}

	settingsDirty = false;
    looping = false;
}

/** start tracking the face **/
void FaceTrackNoIR::startTracker( ) {	
    bindKeyboardShortcuts();

	// 
	// Disable buttons
	//
	ui.iconcomboProfile->setEnabled ( false );
	ui.btnLoad->setEnabled ( false );
	ui.btnSave->setEnabled ( false );
	ui.btnSaveAs->setEnabled ( false );
	ui.btnShowFilterControls->setEnabled ( true );

	//
	// Create the Tracker and setup
	//

    if (Libraries)
        delete Libraries;
    Libraries = new SelectedLibraries(this);

    if (!Libraries->correct)
    {
        QMessageBox::warning(this, "Something went wrong", "Tracking can't be initialized, probably protocol prerequisites missing", QMessageBox::Ok, QMessageBox::NoButton);
        stopTracker();
        return;
    }
    
#if defined(_WIN32) || defined(__WIN32)
    keybindingWorker = new KeybindingWorker(*this, keyCenter);
    keybindingWorker->start();
#endif

    if (tracker) {
        tracker->wait();
        delete tracker;
    }

    QSettings settings("opentrack");	// Registry settings (in HK_USER)
    QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
    QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

    for (int i = 0; i < 6; i++)
    {
        axis(i).curve.loadSettings(iniFile);
        axis(i).curveAlt.loadSettings(iniFile);
    }

    static const char* names[] = {
        "tx_alt",
        "ty_alt",
        "tz_alt",
        "rx_alt",
        "ry_alt",
        "rz_alt",
    };

    static const char* invert_names[] = {
        "invertX",
        "invertY",
        "invertZ",
        "invertYaw",
        "invertPitch",
        "invertRoll"
    };

    iniFile.beginGroup("Tracking");

    for (int i = 0; i < 6; i++) {
        axis(i).altp = iniFile.value(names[i], false).toBool();
        axis(i).invert = iniFile.value(invert_names[i], false).toBool() ? 1 : -1;
    }

    iniFile.endGroup();

	tracker = new Tracker ( this );

	//
	// Setup the Tracker and send the settings.
	// This is necessary, because the events are only triggered 'on change'
	//
    tracker->setInvertAxis(Yaw, ui.chkInvertYaw->isChecked() );
    tracker->setInvertAxis(Pitch, ui.chkInvertPitch->isChecked() );
    tracker->setInvertAxis(Roll, ui.chkInvertRoll->isChecked() );
    tracker->setInvertAxis(TX, ui.chkInvertX->isChecked() );
    tracker->setInvertAxis(TY, ui.chkInvertY->isChecked() );
    tracker->setInvertAxis(TZ, ui.chkInvertZ->isChecked() );

	//
	// Register the Tracker instance with the Tracker Dialog (if open)
	//
    if (pTrackerDialog && Libraries->pTracker) {
        pTrackerDialog->registerTracker( Libraries->pTracker );
	}
    
    if (pFilterDialog && Libraries->pFilter)
        pFilterDialog->registerFilter(Libraries->pFilter);
    
    tracker->start();

	ui.headPoseWidget->show();

	// 
	ui.btnStartTracker->setEnabled ( false );
	ui.btnStopTracker->setEnabled ( true );

	// Enable/disable Protocol-server Settings
	ui.iconcomboTrackerSource->setEnabled ( false );
	ui.cbxSecondTrackerSource->setEnabled ( false );
	ui.iconcomboProtocol->setEnabled ( false );
    ui.btnShowServerControls->setEnabled ( false );
	ui.iconcomboFilter->setEnabled ( false );

	//
	// Update the camera-name, FaceAPI can only use the 1st one found!
	//
	GetCameraNameDX();

	//
	// Start the timer to update the head-pose (digits and 'man in black')
	//
    timUpdateHeadPose.start(40);

	ui.lblX->setVisible(true);
	ui.lblY->setVisible(true);
	ui.lblZ->setVisible(true);
	ui.lblRotX->setVisible(true);
	ui.lblRotY->setVisible(true);
	ui.lblRotZ->setVisible(true);

	ui.lcdNumOutputPosX->setVisible(true);
	ui.lcdNumOutputPosY->setVisible(true);
	ui.lcdNumOutputPosZ->setVisible(true);
	ui.lcdNumOutputRotX->setVisible(true);
	ui.lcdNumOutputRotY->setVisible(true);
	ui.lcdNumOutputRotZ->setVisible(true);
}

/** stop tracking the face **/
void FaceTrackNoIR::stopTracker( ) {	
    ui.game_name->setText("Not connected");
#if defined(_WIN32) || defined(__WIN32)
    if (keybindingWorker)
    {
        keybindingWorker->should_quit = true;
        keybindingWorker->wait();
        delete keybindingWorker;
        keybindingWorker = NULL;
    }
#endif
	//
	// Stop displaying the head-pose.
	//
	timUpdateHeadPose.stop();
    ui.pose_display->rotateBy(0, 0, 0);

	ui.lblX->setVisible(false);
	ui.lblY->setVisible(false);
	ui.lblZ->setVisible(false);
	ui.lblRotX->setVisible(false);
	ui.lblRotY->setVisible(false);
	ui.lblRotZ->setVisible(false);

	ui.lcdNumOutputPosX->setVisible(false);
	ui.lcdNumOutputPosY->setVisible(false);
	ui.lcdNumOutputPosZ->setVisible(false);
	ui.lcdNumOutputRotX->setVisible(false);
	ui.lcdNumOutputRotY->setVisible(false);
	ui.lcdNumOutputRotZ->setVisible(false);
    
    //
    // UnRegister the Tracker instance with the Tracker Dialog (if open)
    //
    if (pTrackerDialog) {
        pTrackerDialog->unRegisterTracker();
    }
    if (pProtocolDialog) {
        pProtocolDialog->unRegisterProtocol();
    }
    if (pFilterDialog)
        pFilterDialog->unregisterFilter();

	//
	// Delete the tracker (after stopping things and all).
	//
    if ( tracker ) {
        qDebug() << "Done with tracking";
        tracker->should_quit = true;
        tracker->wait();

		qDebug() << "stopTracker says: Deleting tracker!";
		delete tracker;
		qDebug() << "stopTracker says: Tracker deleted!";
		tracker = 0;
        if (Libraries) {
            delete Libraries;
            Libraries = NULL;
        }
	}
	ui.btnStartTracker->setEnabled ( true );
	ui.btnStopTracker->setEnabled ( false );
//	ui.btnShowEngineControls->setEnabled ( false );
	ui.iconcomboProtocol->setEnabled ( true );
	ui.iconcomboTrackerSource->setEnabled ( true );
	ui.cbxSecondTrackerSource->setEnabled ( true );
	ui.iconcomboFilter->setEnabled ( true );

	// Enable/disable Protocol-server Settings
	ui.btnShowServerControls->setEnabled ( true );
	ui.video_frame->hide();

	// 
	ui.iconcomboProfile->setEnabled ( true );
	ui.btnLoad->setEnabled ( true );
	ui.btnSave->setEnabled ( true );
	ui.btnSaveAs->setEnabled ( true );
	ui.btnShowFilterControls->setEnabled ( true );
}

/** set the invert from the checkbox **/
void FaceTrackNoIR::setInvertAxis(Axis axis, int invert ) {
    if (tracker)
        tracker->setInvertAxis (axis, (invert != 0)?true:false );
	settingsDirty = true;
}

/** Show the headpose in the widget (triggered by timer) **/
void FaceTrackNoIR::showHeadPose() {
    double newdata[6];

	ui.lblX->setVisible(true);
	ui.lblY->setVisible(true);
	ui.lblZ->setVisible(true);
	ui.lblRotX->setVisible(true);
	ui.lblRotY->setVisible(true);
	ui.lblRotZ->setVisible(true);

	ui.lcdNumOutputPosX->setVisible(true);
	ui.lcdNumOutputPosY->setVisible(true);
	ui.lcdNumOutputPosZ->setVisible(true);
	ui.lcdNumOutputRotX->setVisible(true);
	ui.lcdNumOutputRotY->setVisible(true);
	ui.lcdNumOutputRotZ->setVisible(true);

	//
	// Get the pose and also display it.
	// Updating the pose from within the Tracker-class caused crashes...
	//
    tracker->getHeadPose(newdata);
    ui.lcdNumX->display(QString("%1").arg(newdata[TX], 0, 'f', 1));
    ui.lcdNumY->display(QString("%1").arg(newdata[TY], 0, 'f', 1));
    ui.lcdNumZ->display(QString("%1").arg(newdata[TZ], 0, 'f', 1));


    ui.lcdNumRotX->display(QString("%1").arg(newdata[Yaw], 0, 'f', 1));
    ui.lcdNumRotY->display(QString("%1").arg(newdata[Pitch], 0, 'f', 1));
    ui.lcdNumRotZ->display(QString("%1").arg(newdata[Roll], 0, 'f', 1));

	//
	// Get the output-pose and also display it.
	//
    tracker->getOutputHeadPose(newdata);

    ui.pose_display->rotateBy(newdata[Yaw], newdata[Roll], newdata[Pitch]);

    ui.lcdNumOutputPosX->display(QString("%1").arg(newdata[TX], 0, 'f', 1));
    ui.lcdNumOutputPosY->display(QString("%1").arg(newdata[TY], 0, 'f', 1));
    ui.lcdNumOutputPosZ->display(QString("%1").arg(newdata[TZ], 0, 'f', 1));


    ui.lcdNumOutputRotX->display(QString("%1").arg(newdata[Yaw], 0, 'f', 1));
    ui.lcdNumOutputRotY->display(QString("%1").arg(newdata[Pitch], 0, 'f', 1));
    ui.lcdNumOutputRotZ->display(QString("%1").arg(newdata[Roll], 0, 'f', 1));

    //
    // Update the curves in the curve-configurator. This shows the ball with the red lines.
    //
    if (_curve_config) {
        _curve_config->update();
    }
    if (Libraries->pProtocol)
    {
        QString name = Libraries->pProtocol->getGameName();
        ui.game_name->setText(name);
    }
}

/** toggles Video Widget **/
void FaceTrackNoIR::showVideoWidget() {
	if(ui.video_frame->isHidden())
		ui.video_frame->show();
	else
		ui.video_frame->hide();
}

/** toggles Video Widget **/
void FaceTrackNoIR::showHeadPoseWidget() {
	if(ui.headPoseWidget->isHidden())
		ui.headPoseWidget->show();
	else
		ui.headPoseWidget->hide();
}

/** toggles Engine Controls Dialog **/
void FaceTrackNoIR::showTrackerSettings() {
	if (pTrackerDialog) {
		delete pTrackerDialog;
		pTrackerDialog = NULL;
	}

    DynamicLibrary* lib = dlopen_trackers.value(ui.iconcomboTrackerSource->currentIndex(), (DynamicLibrary*) NULL);

    if (lib) {
        pTrackerDialog = (ITrackerDialog*) lib->Dialog();
        if (pTrackerDialog) {
            if (Libraries && Libraries->pTracker)
                pTrackerDialog->registerTracker(Libraries->pTracker);
            pTrackerDialog->Initialize(this);
        }
    }
}

// Show the Settings dialog for the secondary Tracker
void FaceTrackNoIR::showSecondTrackerSettings() {
    if (pSecondTrackerDialog) {
        delete pSecondTrackerDialog;
        pSecondTrackerDialog = NULL;
    }

    DynamicLibrary* lib = dlopen_trackers.value(ui.cbxSecondTrackerSource->currentIndex() - 1, (DynamicLibrary*) NULL);

    if (lib) {
        pSecondTrackerDialog = (ITrackerDialog*) lib->Dialog();
        if (pSecondTrackerDialog) {
            if (Libraries && Libraries->pSecondTracker)
                pSecondTrackerDialog->registerTracker(Libraries->pSecondTracker);
            pSecondTrackerDialog->Initialize(this);
        }
    }
}

/** toggles Server Controls Dialog **/
void FaceTrackNoIR::showServerControls() {
    if (pProtocolDialog) {
        delete pProtocolDialog;
        pProtocolDialog = NULL;
    }

    DynamicLibrary* lib = dlopen_protocols.value(ui.iconcomboProtocol->currentIndex(), (DynamicLibrary*) NULL);

    if (lib && lib->Dialog) {
        pProtocolDialog = (IProtocolDialog*) lib->Dialog();
        if (pProtocolDialog) {
            pProtocolDialog->Initialize(this);
        }
    }
}

/** toggles Filter Controls Dialog **/
void FaceTrackNoIR::showFilterControls() {
    if (pFilterDialog) {
        delete pFilterDialog;
        pFilterDialog = NULL;
    }

    DynamicLibrary* lib = dlopen_filters.value(ui.iconcomboFilter->currentIndex(), (DynamicLibrary*) NULL);

    if (lib && lib->Dialog) {
        pFilterDialog = (IFilterDialog*) lib->Dialog();
        if (pFilterDialog) {
            pFilterDialog->Initialize(this);
            if (Libraries && Libraries->pFilter)
                pFilterDialog->registerFilter(Libraries->pFilter);
        }
    }
}
/** toggles Keyboard Shortcut Dialog **/
void FaceTrackNoIR::showKeyboardShortcuts() {

	// Create if new
	if (!_keyboard_shortcuts)
    {
        _keyboard_shortcuts = new KeyboardShortcutDialog( this, this, Qt::Dialog );
    }

	// Show if already created
	if (_keyboard_shortcuts) {
		_keyboard_shortcuts->show();
		_keyboard_shortcuts->raise();
	}
}

/** toggles Curve Configuration Dialog **/
void FaceTrackNoIR::showCurveConfiguration() {

	// Create if new
	if (!_curve_config)
    {
        _curve_config = new CurveConfigurationDialog( this, this, Qt::Dialog );
    }

	// Show if already created
	if (_curve_config) {
		_curve_config->show();
		_curve_config->raise();
	}
}

/** exit application **/
void FaceTrackNoIR::exit() {
	QCoreApplication::exit(0);
}

static bool get_metadata(DynamicLibrary* lib, QString& longName, QIcon& icon)
{
    Metadata* meta;
    if (!lib->Metadata || ((meta = lib->Metadata()), !meta))
    {
        delete lib;
        return false;
    }
    meta->getFullName(&longName);
    meta->getIcon(&icon);
    delete meta;
    return true;
}

static void fill_combobox(const QString& filter, QList<DynamicLibrary*>& list, QComboBox* cbx)
{
    QDir settingsDir( QCoreApplication::applicationDirPath() );
    QStringList filenames = settingsDir.entryList( QStringList() << (LIB_PREFIX + filter + SONAME), QDir::Files, QDir::Name );
    for ( int i = 0; i < filenames.size(); i++) {
        QIcon icon;
        QString longName;
        QString str = filenames.at(i);
        DynamicLibrary* lib = new DynamicLibrary(str);
        qDebug() << "Loading" << str;
        std::cout.flush();
        if (!get_metadata(lib, longName, icon))
        {
            delete lib;
            continue;
        }
        list.push_back(lib);
        cbx->addItem(icon, longName);
    }
}

//
// Setup the icons for the comboBoxes
//
void FaceTrackNoIR::createIconGroupBox()
{   
    ui.cbxSecondTrackerSource->addItem(QIcon(), "None");
    dlopen_filters.push_back((DynamicLibrary*) NULL);
    ui.iconcomboFilter->addItem(QIcon(), "None");
    
    fill_combobox("opentrack-proto-*.", dlopen_protocols, ui.iconcomboProtocol);
    fill_combobox("opentrack-tracker-*.", dlopen_trackers, ui.iconcomboTrackerSource);
    fill_combobox("opentrack-filter-*.", dlopen_filters, ui.iconcomboFilter);

	connect(ui.iconcomboProtocol, SIGNAL(currentIndexChanged(int)), this, SLOT(protocolSelected(int)));
    connect(ui.iconcomboTrackerSource, SIGNAL(currentIndexChanged(int)), this, SLOT(trackingSourceSelected(int)));
    connect(ui.iconcomboFilter, SIGNAL(currentIndexChanged(int)), this, SLOT(filterSelected(int)));
	connect(ui.cbxSecondTrackerSource, SIGNAL(currentIndexChanged(int)), this, SLOT(trackingSourceSelected(int)));
}

//
// Handle changes of the Protocol selection
//
void FaceTrackNoIR::protocolSelected(int index)
{
	settingsDirty = true;
	ui.btnShowServerControls->setEnabled ( true );

    //setWindowIcon(QIcon(":/images/FaceTrackNoIR.png"));
    //breaks with transparency -sh
    //ui.btnShowServerControls->setIcon(icon);]
}

//
// Handle changes of the Tracking Source selection
//
void FaceTrackNoIR::trackingSourceSelected(int index)
{
	settingsDirty = true;
	ui.btnShowEngineControls->setEnabled ( true );
}

//
// Handle changes of the Profile selection
//
void FaceTrackNoIR::profileSelected(int index)
{
    if (looping)
        return;
	//
	// Read the current INI-file setting, to get the folder in which it's located...
	//
	QSettings settings("opentrack");	// Registry settings (in HK_USER)
	QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
    QFileInfo pathInfo ( currentFile );

	//
	// Save the name of the INI-file in the Registry.
	//
    settings.setValue ("SettingsFile", pathInfo.absolutePath() + "/" + iniFileList.value(ui.iconcomboProfile->currentIndex(), ""));
	loadSettings();
}

//
// Handle changes of the Filter selection
//
void FaceTrackNoIR::filterSelected(int index)
{
	settingsDirty = true;

	//QSettings settings("opentrack");	// Registry settings (in HK_USER)

	//QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
	//QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

	ui.btnShowFilterControls->setEnabled ( true );
}

//**************************************************************************************************//
//**************************************************************************************************//
//
// Constructor for Keyboard-shortcuts-dialog
//
KeyboardShortcutDialog::KeyboardShortcutDialog( FaceTrackNoIR *ftnoir, QWidget *parent, Qt::WindowFlags f ) :
QWidget( parent , f)
{
	ui.setupUi( this );

	QPoint offsetpos(100, 100);
	this->move(parent->pos() + offsetpos);

	mainApp = ftnoir;											// Preserve a pointer to FTNoIR

	// Connect Qt signals to member-functions
	connect(ui.btnOK, SIGNAL(clicked()), this, SLOT(doOK()));
	connect(ui.btnCancel, SIGNAL(clicked()), this, SLOT(doCancel()));

	// Clear the Lists with key-descriptions and keycodes and build the Lists
	// The strings will all be added to the ListBoxes for each Shortkey
	//

	// Add strings to the Listboxes.
	//

    for ( int i = 0; i < global_key_sequences.size(); i++) {
        ui.cbxCenterKey->addItem(global_key_sequences.at(i));
	}

	// Load the settings from the current .INI-file
	loadSettings();
}

//
// Destructor for server-dialog
//
KeyboardShortcutDialog::~KeyboardShortcutDialog() {
	qDebug() << "~KeyboardShortcutDialog() says: started";
}

//
// OK clicked on server-dialog
//
void KeyboardShortcutDialog::doOK() {
	save();
	this->close();
    mainApp->bindKeyboardShortcuts();
}

// override show event
void KeyboardShortcutDialog::showEvent ( QShowEvent * event ) {
	loadSettings();
}

//
// Cancel clicked on server-dialog
//
void KeyboardShortcutDialog::doCancel() {
	//
	// Ask if changed Settings should be saved
	//
	if (settingsDirty) {
		int ret = QMessageBox::question ( this, "Settings have changed", "Do you want to save the settings?", QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel, QMessageBox::Discard );

		qDebug() << "doCancel says: answer =" << ret;

		switch (ret) {
			case QMessageBox::Save:
				save();
				this->close();
				break;
			case QMessageBox::Discard:
				this->close();
				break;
			case QMessageBox::Cancel:
				// Cancel was clicked
				break;
			default:
				// should never be reached
			break;
		}
	}
	else {
		this->close();
	}
}

void FaceTrackNoIR::bindKeyboardShortcuts()
{
    QSettings settings("opentrack");	// Registry settings (in HK_USER)

    QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
    QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)
    iniFile.beginGroup ( "KB_Shortcuts" );
    int idxCenter = iniFile.value("Key_index_Center", 0).toInt();
    
#if !defined(_WIN32) && !defined(__WIN32)
    if (keyCenter) {
        delete keyCenter;
        keyCenter = NULL;
    }

    if (idxCenter > 0)
    {
        QString seq(global_key_sequences.value(idxCenter, ""));
        if (!seq.isEmpty())
        {
            if (iniFile.value("Shift_Center", false).toBool())
                seq = "Shift+" + seq;
            if (iniFile.value("Alt_Center", false).toBool())
                seq = "Alt+" + seq;
            if (iniFile.value("Ctrl_Center", false).toBool())
                seq = "Ctrl+" + seq;
            keyCenter = new QxtGlobalShortcut(QKeySequence(seq));
            connect(keyCenter, SIGNAL(activated()), this, SLOT(shortcutRecentered()));
        }
    }

#else
    keyCenter.keycode = 0;
    keyCenter.shift = keyCenter.alt = keyCenter.ctrl = 0;
    if (idxCenter > 0 && idxCenter < global_windows_key_sequences.size())
        keyCenter.keycode = global_windows_key_sequences[idxCenter];
    keyCenter.shift = iniFile.value("Shift_Center", false).toBool();
    keyCenter.alt = iniFile.value("Alt_Center", false).toBool();
    keyCenter.ctrl = iniFile.value("Ctrl_Center", false).toBool();
#endif
    iniFile.endGroup ();
    
    if (tracker) /* running already */
    {
#if defined(_WIN32) || defined(__WIN32)
    if (keybindingWorker)
    {
        keybindingWorker->should_quit = true;
        keybindingWorker->wait();
        delete keybindingWorker;
        keybindingWorker = NULL;
    }
    keybindingWorker = new KeybindingWorker(*this, keyCenter);
    keybindingWorker->start();
#endif
    }
}

//
// Load the current Settings from the currently 'active' INI-file.
//
void KeyboardShortcutDialog::loadSettings() {
	qDebug() << "loadSettings says: Starting ";
	QSettings settings("opentrack");	// Registry settings (in HK_USER)

	QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
	QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

	qDebug() << "loadSettings says: iniFile = " << currentFile;

	iniFile.beginGroup ( "KB_Shortcuts" );
	
    ui.chkCenterShift->setChecked (iniFile.value ( "Shift_Center", 0 ).toBool());
	ui.chkCenterCtrl->setChecked (iniFile.value ( "Ctrl_Center", 0 ).toBool());
	ui.chkCenterAlt->setChecked (iniFile.value ( "Alt_Center", 0 ).toBool());

    ui.cbxCenterKey->setCurrentIndex(iniFile.value("Key_index_Center", 0).toInt());

	iniFile.endGroup ();

	settingsDirty = false;

}

//
// Save the current Settings to the currently 'active' INI-file.
//
void KeyboardShortcutDialog::save() {

	qDebug() << "save() says: started";

	QSettings settings("opentrack");	// Registry settings (in HK_USER)

	QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
	QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

	iniFile.beginGroup ( "KB_Shortcuts" );
    iniFile.setValue ( "Key_index_Center", ui.cbxCenterKey->currentIndex() );
	iniFile.setValue ( "Shift_Center", ui.chkCenterShift->isChecked() );
	iniFile.setValue ( "Ctrl_Center", ui.chkCenterCtrl->isChecked() );
	iniFile.setValue ( "Alt_Center", ui.chkCenterAlt->isChecked() );

	iniFile.endGroup ();

	settingsDirty = false;

	//
	// Send a message to the main program, to update the Settings (for the tracker)
	//
	mainApp->updateSettings();
}

//**************************************************************************************************//
//**************************************************************************************************//
//
// Constructor for Curve-configuration-dialog
//
CurveConfigurationDialog::CurveConfigurationDialog( FaceTrackNoIR *ftnoir, QWidget *parent, Qt::WindowFlags f ) :
QWidget( parent , f)
{
	ui.setupUi( this );

	QPoint offsetpos(120, 30);
	this->move(parent->pos() + offsetpos);

	mainApp = ftnoir;											// Preserve a pointer to FTNoIR

	QSettings settings("opentrack");	// Registry settings (in HK_USER)
	QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();

    QFunctionConfigurator* configs[6] = {
        ui.txconfig,
        ui.tyconfig,
        ui.tzconfig,
        ui.rxconfig,
        ui.ryconfig,
        ui.rzconfig
    };

    QFunctionConfigurator* alt_configs[6] = {
        ui.txconfig_alt,
        ui.tyconfig_alt,
        ui.tzconfig_alt,
        ui.rxconfig_alt,
        ui.ryconfig_alt,
        ui.rzconfig_alt
    };

    QCheckBox* checkboxes[6] = {
        ui.rx_altp,
        ui.ry_altp,
        ui.rz_altp,
        ui.tx_altp,
        ui.ty_altp,
        ui.tz_altp
    };
    
    for (int i = 0; i < 6; i++)
    {
        configs[i]->setConfig(&mainApp->axis(i).curve, currentFile);
        alt_configs[i]->setConfig(&mainApp->axis(i).curveAlt, currentFile);
        connect(configs[i], SIGNAL(CurveChanged(bool)), this, SLOT(curveChanged(bool)));
        connect(alt_configs[i], SIGNAL(CurveChanged(bool)), this, SLOT(curveChanged(bool)));
        connect(checkboxes[i], SIGNAL(stateChanged(int)), this, SLOT(curveChanged(int)));
    }

	// Connect Qt signals to member-functions
	connect(ui.btnOK, SIGNAL(clicked()), this, SLOT(doOK()));
	connect(ui.btnCancel, SIGNAL(clicked()), this, SLOT(doCancel()));

	// Load the settings from the current .INI-file
	loadSettings();
}

//
// Destructor for server-dialog
//
CurveConfigurationDialog::~CurveConfigurationDialog() {
	qDebug() << "~CurveConfigurationDialog() says: started";
}

//
// OK clicked on server-dialog
//
void CurveConfigurationDialog::doOK() {
	save();
	this->close();
}

// override show event
void CurveConfigurationDialog::showEvent ( QShowEvent * event ) {
	loadSettings();
}

//
// Cancel clicked on server-dialog
//
void CurveConfigurationDialog::doCancel() {
	//
	// Ask if changed Settings should be saved
	//
	if (settingsDirty) {
		int ret = QMessageBox::question ( this, "Settings have changed", "Do you want to save the settings?", QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel, QMessageBox::Discard );

		qDebug() << "doCancel says: answer =" << ret;

		switch (ret) {
			case QMessageBox::Save:
				save();
				this->close();
				break;
			case QMessageBox::Discard:
				this->close();
				break;
			case QMessageBox::Cancel:
				// Cancel was clicked
				break;
			default:
				// should never be reached
			break;
		}
	}
	else {
		this->close();
	}
}

//
// Load the current Settings from the currently 'active' INI-file.
//
void CurveConfigurationDialog::loadSettings() {
	qDebug() << "loadSettings says: Starting ";
	QSettings settings("opentrack");	// Registry settings (in HK_USER)

	QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();
	QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

	qDebug() << "loadSettings says: iniFile = " << currentFile;

    static const char* names[] = {
        "tx_alt",
        "ty_alt",
        "tz_alt",
        "rx_alt",
        "ry_alt",
        "rz_alt"
    };

    iniFile.beginGroup("Tracking");

    for (int i = 0; i < 6; i++)
        mainApp->axis(i).altp = iniFile.value(names[i], false).toBool();

    QCheckBox* widgets[] = {
        ui.tx_altp,
        ui.ty_altp,
        ui.tz_altp,
        ui.rx_altp,
        ui.ry_altp,
        ui.rz_altp
    };

    for (int i = 0; i < 6; i++)
        widgets[i]->setChecked(mainApp->axis(i).altp);

    QDoubleSpinBox* widgets2[] = {
        ui.pos_tx,
        ui.pos_ty,
        ui.pos_tz,
        ui.pos_tx,
        ui.pos_ry,
        ui.pos_rz
    };
    
    const char* names2[] = {
        "zero_tx",
        "zero_ty",
        "zero_tz",
        "zero_rx",
        "zero_ry",
        "zero_rz"
    };
    
    for (int i = 0; i < 6; i++)
        widgets2[i]->setValue(iniFile.value(names2[i], 0).toDouble());
    
    iniFile.endGroup();
    
    settingsDirty = false;
}

//
// Save the current Settings to the currently 'active' INI-file.
//
void CurveConfigurationDialog::save() {

	qDebug() << "save() says: started";

    QSettings settings("opentrack");	// Registry settings (in HK_USER)

    QString currentFile = settings.value ( "SettingsFile", QCoreApplication::applicationDirPath() + "/Settings/default.ini" ).toString();

    ui.rxconfig->saveSettings(currentFile);
    ui.ryconfig->saveSettings(currentFile);
    ui.rzconfig->saveSettings(currentFile);
    ui.txconfig->saveSettings(currentFile);
    ui.tyconfig->saveSettings(currentFile);
    ui.tzconfig->saveSettings(currentFile);

    ui.txconfig_alt->saveSettings(currentFile);
    ui.tyconfig_alt->saveSettings(currentFile);
    ui.tzconfig_alt->saveSettings(currentFile);
    ui.rxconfig_alt->saveSettings(currentFile);
    ui.ryconfig_alt->saveSettings(currentFile);
    ui.rzconfig_alt->saveSettings(currentFile);

    QSettings iniFile( currentFile, QSettings::IniFormat );		// Application settings (in INI-file)

    iniFile.beginGroup("Tracking");

    iniFile.setValue("rx_alt", ui.rx_altp->checkState() != Qt::Unchecked);
    iniFile.setValue("ry_alt", ui.ry_altp->checkState() != Qt::Unchecked);
    iniFile.setValue("rz_alt", ui.rz_altp->checkState() != Qt::Unchecked);
    iniFile.setValue("tx_alt", ui.tx_altp->checkState() != Qt::Unchecked);
    iniFile.setValue("ty_alt", ui.ty_altp->checkState() != Qt::Unchecked);
    iniFile.setValue("tz_alt", ui.tz_altp->checkState() != Qt::Unchecked);
    
    QDoubleSpinBox* widgets2[] = {
        ui.pos_tx,
        ui.pos_ty,
        ui.pos_tz,
        ui.pos_tx,
        ui.pos_ry,
        ui.pos_rz
    };
    
    const char* names2[] = {
        "zero_tx",
        "zero_ty",
        "zero_tz",
        "zero_rx",
        "zero_ry",
        "zero_rz"
    };
    
    for (int i = 0; i < 6; i++)
        iniFile.setValue(names2[i], widgets2[i]->value());

    iniFile.endGroup();

	settingsDirty = false;

	//
	// Send a message to the main program, to update the Settings (for the tracker)
	//
	mainApp->updateSettings();
}

void FaceTrackNoIR::shortcutRecentered()
{
    if (tracker)
    {
#if defined(__WIN32) || defined(_WIN32)
        MessageBeep(MB_OK);
#else
        QApplication::beep();
#endif
        qDebug() << "Center";
        tracker->do_center = true;
    }
}