#include "config.h"
#include <QApplication>
#include <QSplitter>
#include <QVBoxLayout>
#include <QMenuBar>
#include <QStatusBar>
#include <QMessageBox>
#include <QFileDialog>
#include <QPrintDialog>
#include <QPainter>
#include <QPaintEngine>
#include <QPaintDevice>
#include <QKeyEvent>
#include <QSignalMapper>
#include <QMenu>
#include <QToolBar>
#include <QTabWidget>
#include <QActionGroup>
#include <QAction>
#include <QLabel>
#include <QSettings>
#include <QLocale>
#include <QMimeData>
#include <QUrl>
#include <QPixmapCache>
#ifdef ENABLE_HIDPI
#include <QWindow>
#include <QScreen>
#endif // ENABLE_HIDPI
#include <QStyle>
#include "data/data.h"
#include "data/poi.h"
#include "map/maplist.h"
#include "map/emptymap.h"
#include "map/downloader.h"
#include "icons.h"
#include "keys.h"
#include "settings.h"
#include "elevationgraph.h"
#include "speedgraph.h"
#include "heartrategraph.h"
#include "temperaturegraph.h"
#include "cadencegraph.h"
#include "powergraph.h"
#include "gearratiograph.h"
#include "mapview.h"
#include "trackinfo.h"
#include "filebrowser.h"
#include "cpuarch.h"
#include "graphtab.h"
#include "graphitem.h"
#include "pathitem.h"
#include "gui.h"


#define TOOLBAR_ICON_SIZE 22

GUI::GUI()
{
	loadMaps();
	loadPOIs();

	createMapView();
	createGraphTabs();
	createStatusBar();
	createActions();
	createMenus();
	createToolBars();

	createBrowser();

	_splitter = new QSplitter();
	_splitter->setOrientation(Qt::Vertical);
	_splitter->setChildrenCollapsible(false);
	_splitter->addWidget(_mapView);
	_splitter->addWidget(_graphTabWidget);
	_splitter->setContentsMargins(0, 0, 0, 0);
	_splitter->setStretchFactor(0, 255);
	_splitter->setStretchFactor(1, 1);
	setCentralWidget(_splitter);

	setWindowIcon(QIcon(APP_ICON));
	setWindowTitle(APP_NAME);
	setUnifiedTitleAndToolBarOnMac(true);
	setAcceptDrops(true);

	_trackCount = 0;
	_routeCount = 0;
	_waypointCount = 0;
	_trackDistance = 0;
	_routeDistance = 0;
	_time = 0;
	_movingTime = 0;

	_sliderPos = 0;

	_dataDir = QDir::homePath();
	_mapDir = QDir::homePath();
	_poiDir = QDir::homePath();

	readSettings();

	updateGraphTabs();
	updateMapView();
	updateStatusBarInfo();
}

void GUI::loadMaps()
{
	_ml = new MapList(this);
	QString dir;

	if (QFile::exists(USER_MAP_DIR))
		dir = USER_MAP_DIR;
	else if (QFile::exists(GLOBAL_MAP_DIR))
		dir = GLOBAL_MAP_DIR;

	if (!dir.isNull() && !_ml->loadDir(dir))
		qWarning("%s", qPrintable(_ml->errorString()));

	_map = new EmptyMap(this);
}

void GUI::loadPOIs()
{
	_poi = new POI(this);
	QString dir;

	if (QFile::exists(USER_POI_DIR))
		dir = USER_POI_DIR;
	else if (QFile::exists(GLOBAL_POI_DIR))
		dir = GLOBAL_POI_DIR;

	if (!dir.isNull() && !_poi->loadDir(dir))
		qWarning("%s", qPrintable(_poi->errorString()));
}

void GUI::createBrowser()
{
	_browser = new FileBrowser(this);
	_browser->setFilter(Data::filter());
}

void GUI::createMapActions()
{
	_mapsSignalMapper = new QSignalMapper(this);
	_mapsActionGroup = new QActionGroup(this);
	_mapsActionGroup->setExclusive(true);

	for (int i = 0; i < _ml->maps().count(); i++)
		createMapAction(_ml->maps().at(i));

	connect(_mapsSignalMapper, SIGNAL(mapped(int)), this,
	  SLOT(mapChanged(int)));
}

QAction *GUI::createMapAction(const Map *map)
{
	QAction *a = new QAction(map->name(), this);
	a->setMenuRole(QAction::NoRole);
	a->setCheckable(true);
	a->setActionGroup(_mapsActionGroup);

	_mapActions.append(a);
	_mapsSignalMapper->setMapping(a, _mapActions.size() - 1);
	connect(a, SIGNAL(triggered()), _mapsSignalMapper, SLOT(map()));

	return a;
}

void GUI::createPOIFilesActions()
{
	_poiFilesSignalMapper = new QSignalMapper(this);

	for (int i = 0; i < _poi->files().count(); i++)
		createPOIFileAction(_poi->files().at(i));

	connect(_poiFilesSignalMapper, SIGNAL(mapped(int)), this,
	  SLOT(poiFileChecked(int)));
}

QAction *GUI::createPOIFileAction(const QString &fileName)
{
	QAction *a = new QAction(QFileInfo(fileName).fileName(), this);
	a->setMenuRole(QAction::NoRole);
	a->setCheckable(true);

	_poiFilesActions.append(a);
	_poiFilesSignalMapper->setMapping(a, _poiFilesActions.size() - 1);
	connect(a, SIGNAL(triggered()), _poiFilesSignalMapper, SLOT(map()));

	return a;
}

void GUI::createActions()
{
	QActionGroup *ag;

	// Action Groups
	_fileActionGroup = new QActionGroup(this);
	_fileActionGroup->setExclusive(false);
	_fileActionGroup->setEnabled(false);

	_navigationActionGroup = new QActionGroup(this);
	_navigationActionGroup->setEnabled(false);

	// General actions
	_exitAction = new QAction(QIcon(QUIT_ICON), tr("Quit"), this);
	_exitAction->setShortcut(QUIT_SHORTCUT);
	_exitAction->setMenuRole(QAction::QuitRole);
	connect(_exitAction, SIGNAL(triggered()), this, SLOT(close()));
	addAction(_exitAction);

	// Help & About
	_pathsAction = new QAction(tr("Paths"), this);
	_pathsAction->setMenuRole(QAction::NoRole);
	connect(_pathsAction, SIGNAL(triggered()), this, SLOT(paths()));
	_keysAction = new QAction(tr("Keyboard controls"), this);
	_keysAction->setMenuRole(QAction::NoRole);
	connect(_keysAction, SIGNAL(triggered()), this, SLOT(keys()));
	_aboutAction = new QAction(QIcon(APP_ICON), tr("About GPXSee"), this);
	_aboutAction->setMenuRole(QAction::AboutRole);
	connect(_aboutAction, SIGNAL(triggered()), this, SLOT(about()));

	// File actions
	_openFileAction = new QAction(QIcon(OPEN_FILE_ICON), tr("Open..."), this);
	_openFileAction->setMenuRole(QAction::NoRole);
	_openFileAction->setShortcut(OPEN_SHORTCUT);
	connect(_openFileAction, SIGNAL(triggered()), this, SLOT(openFile()));
	addAction(_openFileAction);
	_printFileAction = new QAction(QIcon(PRINT_FILE_ICON), tr("Print..."),
	  this);
	_printFileAction->setMenuRole(QAction::NoRole);
	_printFileAction->setActionGroup(_fileActionGroup);
	connect(_printFileAction, SIGNAL(triggered()), this, SLOT(printFile()));
	addAction(_printFileAction);
	_exportFileAction = new QAction(QIcon(EXPORT_FILE_ICON),
	  tr("Export to PDF..."), this);
	_exportFileAction->setMenuRole(QAction::NoRole);
	_exportFileAction->setShortcut(EXPORT_SHORTCUT);
	_exportFileAction->setActionGroup(_fileActionGroup);
	connect(_exportFileAction, SIGNAL(triggered()), this, SLOT(exportFile()));
	addAction(_exportFileAction);
	_closeFileAction = new QAction(QIcon(CLOSE_FILE_ICON), tr("Close"), this);
	_closeFileAction->setMenuRole(QAction::NoRole);
	_closeFileAction->setShortcut(CLOSE_SHORTCUT);
	_closeFileAction->setActionGroup(_fileActionGroup);
	connect(_closeFileAction, SIGNAL(triggered()), this, SLOT(closeAll()));
	addAction(_closeFileAction);
	_reloadFileAction = new QAction(QIcon(RELOAD_FILE_ICON), tr("Reload"),
	  this);
	_reloadFileAction->setMenuRole(QAction::NoRole);
	_reloadFileAction->setShortcut(RELOAD_SHORTCUT);
	_reloadFileAction->setActionGroup(_fileActionGroup);
	connect(_reloadFileAction, SIGNAL(triggered()), this, SLOT(reloadFile()));
	addAction(_reloadFileAction);
	_statisticsAction = new QAction(tr("Statistics..."), this);
	_statisticsAction->setMenuRole(QAction::NoRole);
	_statisticsAction->setShortcut(STATISTICS_SHORTCUT);
	_statisticsAction->setActionGroup(_fileActionGroup);
	connect(_statisticsAction, SIGNAL(triggered()), this, SLOT(statistics()));
	addAction(_statisticsAction);

	// POI actions
	_openPOIAction = new QAction(QIcon(OPEN_FILE_ICON), tr("Load POI file..."),
	  this);
	_openPOIAction->setMenuRole(QAction::NoRole);
	connect(_openPOIAction, SIGNAL(triggered()), this, SLOT(openPOIFile()));
	_closePOIAction = new QAction(QIcon(CLOSE_FILE_ICON), tr("Close POI files"),
	  this);
	_closePOIAction->setMenuRole(QAction::NoRole);
	connect(_closePOIAction, SIGNAL(triggered()), this, SLOT(closePOIFiles()));
	_overlapPOIAction = new QAction(tr("Overlap POIs"), this);
	_overlapPOIAction->setMenuRole(QAction::NoRole);
	_overlapPOIAction->setCheckable(true);
	connect(_overlapPOIAction, SIGNAL(triggered(bool)), _mapView,
	  SLOT(setPOIOverlap(bool)));
	_showPOILabelsAction = new QAction(tr("Show POI labels"), this);
	_showPOILabelsAction->setMenuRole(QAction::NoRole);
	_showPOILabelsAction->setCheckable(true);
	connect(_showPOILabelsAction, SIGNAL(triggered(bool)), _mapView,
	  SLOT(showPOILabels(bool)));
	_showPOIAction = new QAction(QIcon(SHOW_POI_ICON), tr("Show POIs"), this);
	_showPOIAction->setMenuRole(QAction::NoRole);
	_showPOIAction->setCheckable(true);
	_showPOIAction->setShortcut(SHOW_POI_SHORTCUT);
	connect(_showPOIAction, SIGNAL(triggered(bool)), _mapView,
	  SLOT(showPOI(bool)));
	addAction(_showPOIAction);
	createPOIFilesActions();

	// Map actions
	_showMapAction = new QAction(QIcon(SHOW_MAP_ICON), tr("Show map"),
	  this);
	_showMapAction->setMenuRole(QAction::NoRole);
	_showMapAction->setCheckable(true);
	_showMapAction->setShortcut(SHOW_MAP_SHORTCUT);
	connect(_showMapAction, SIGNAL(triggered(bool)), _mapView,
	  SLOT(showMap(bool)));
	addAction(_showMapAction);
	_loadMapAction = new QAction(QIcon(OPEN_FILE_ICON), tr("Load map..."),
	  this);
	_loadMapAction->setMenuRole(QAction::NoRole);
	connect(_loadMapAction, SIGNAL(triggered()), this, SLOT(loadMap()));
	_clearMapCacheAction = new QAction(tr("Clear tile cache"), this);
	_clearMapCacheAction->setMenuRole(QAction::NoRole);
	connect(_clearMapCacheAction, SIGNAL(triggered()), _mapView,
	  SLOT(clearMapCache()));
	createMapActions();
	_nextMapAction = new QAction(tr("Next map"), this);
	_nextMapAction->setMenuRole(QAction::NoRole);
	_nextMapAction->setShortcut(NEXT_MAP_SHORTCUT);
	connect(_nextMapAction, SIGNAL(triggered()), this, SLOT(nextMap()));
	addAction(_nextMapAction);
	_prevMapAction = new QAction(tr("Next map"), this);
	_prevMapAction->setMenuRole(QAction::NoRole);
	_prevMapAction->setShortcut(PREV_MAP_SHORTCUT);
	connect(_prevMapAction, SIGNAL(triggered()), this, SLOT(prevMap()));
	addAction(_prevMapAction);
	if (_ml->maps().isEmpty()) {
		_showMapAction->setEnabled(false);
		_clearMapCacheAction->setEnabled(false);
	}

	// Data actions
	_showTracksAction = new QAction(tr("Show tracks"), this);
	_showTracksAction->setMenuRole(QAction::NoRole);
	_showTracksAction->setCheckable(true);
	connect(_showTracksAction, SIGNAL(triggered(bool)), this,
	  SLOT(showTracks(bool)));
	_showRoutesAction = new QAction(tr("Show routes"), this);
	_showRoutesAction->setMenuRole(QAction::NoRole);
	_showRoutesAction->setCheckable(true);
	connect(_showRoutesAction, SIGNAL(triggered(bool)), this,
	  SLOT(showRoutes(bool)));
	_showWaypointsAction = new QAction(tr("Show waypoints"), this);
	_showWaypointsAction->setMenuRole(QAction::NoRole);
	_showWaypointsAction->setCheckable(true);
	connect(_showWaypointsAction, SIGNAL(triggered(bool)), _mapView,
	  SLOT(showWaypoints(bool)));
	_showWaypointLabelsAction = new QAction(tr("Waypoint labels"), this);
	_showWaypointLabelsAction->setMenuRole(QAction::NoRole);
	_showWaypointLabelsAction->setCheckable(true);
	connect(_showWaypointLabelsAction, SIGNAL(triggered(bool)), _mapView,
	  SLOT(showWaypointLabels(bool)));
	_showRouteWaypointsAction = new QAction(tr("Route waypoints"), this);
	_showRouteWaypointsAction->setMenuRole(QAction::NoRole);
	_showRouteWaypointsAction->setCheckable(true);
	connect(_showRouteWaypointsAction, SIGNAL(triggered(bool)), _mapView,
	  SLOT(showRouteWaypoints(bool)));

	// Graph actions
	_showGraphsAction = new QAction(QIcon(SHOW_GRAPHS_ICON), tr("Show graphs"),
	  this);
	_showGraphsAction->setMenuRole(QAction::NoRole);
	_showGraphsAction->setCheckable(true);
	_showGraphsAction->setShortcut(SHOW_GRAPHS_SHORTCUT);
	connect(_showGraphsAction, SIGNAL(triggered(bool)), this,
	  SLOT(showGraphs(bool)));
	addAction(_showGraphsAction);
	ag = new QActionGroup(this);
	ag->setExclusive(true);
	_distanceGraphAction = new QAction(tr("Distance"), this);
	_distanceGraphAction->setMenuRole(QAction::NoRole);
	_distanceGraphAction->setCheckable(true);
	_distanceGraphAction->setActionGroup(ag);
	connect(_distanceGraphAction, SIGNAL(triggered()), this,
	  SLOT(setDistanceGraph()));
	addAction(_distanceGraphAction);
	_timeGraphAction = new QAction(tr("Time"), this);
	_timeGraphAction->setMenuRole(QAction::NoRole);
	_timeGraphAction->setCheckable(true);
	_timeGraphAction->setActionGroup(ag);
	connect(_timeGraphAction, SIGNAL(triggered()), this,
	  SLOT(setTimeGraph()));
	addAction(_timeGraphAction);
	_showGraphGridAction = new QAction(tr("Show grid"), this);
	_showGraphGridAction->setMenuRole(QAction::NoRole);
	_showGraphGridAction->setCheckable(true);
	connect(_showGraphGridAction, SIGNAL(triggered(bool)), this,
	  SLOT(showGraphGrids(bool)));
	_showGraphSliderInfoAction = new QAction(tr("Show slider info"), this);
	_showGraphSliderInfoAction->setMenuRole(QAction::NoRole);
	_showGraphSliderInfoAction->setCheckable(true);
	connect(_showGraphSliderInfoAction, SIGNAL(triggered(bool)), this,
	  SLOT(showGraphSliderInfo(bool)));

	// Settings actions
	_showToolbarsAction = new QAction(tr("Show toolbars"), this);
	_showToolbarsAction->setMenuRole(QAction::NoRole);
	_showToolbarsAction->setCheckable(true);
	connect(_showToolbarsAction, SIGNAL(triggered(bool)), this,
	  SLOT(showToolbars(bool)));
	ag = new QActionGroup(this);
	ag->setExclusive(true);
	_totalTimeAction = new QAction(tr("Total time"), this);
	_totalTimeAction->setMenuRole(QAction::NoRole);
	_totalTimeAction->setCheckable(true);
	_totalTimeAction->setActionGroup(ag);
	connect(_totalTimeAction, SIGNAL(triggered()), this,
	  SLOT(setTotalTime()));
	_movingTimeAction = new QAction(tr("Moving time"), this);
	_movingTimeAction->setMenuRole(QAction::NoRole);
	_movingTimeAction->setCheckable(true);
	_movingTimeAction->setActionGroup(ag);
	connect(_movingTimeAction, SIGNAL(triggered()), this,
	  SLOT(setMovingTime()));
	ag = new QActionGroup(this);
	ag->setExclusive(true);
	_metricUnitsAction = new QAction(tr("Metric"), this);
	_metricUnitsAction->setMenuRole(QAction::NoRole);
	_metricUnitsAction->setCheckable(true);
	_metricUnitsAction->setActionGroup(ag);
	connect(_metricUnitsAction, SIGNAL(triggered()), this,
	  SLOT(setMetricUnits()));
	_imperialUnitsAction = new QAction(tr("Imperial"), this);
	_imperialUnitsAction->setMenuRole(QAction::NoRole);
	_imperialUnitsAction->setCheckable(true);
	_imperialUnitsAction->setActionGroup(ag);
	connect(_imperialUnitsAction, SIGNAL(triggered()), this,
	  SLOT(setImperialUnits()));
	_nauticalUnitsAction = new QAction(tr("Nautical"), this);
	_nauticalUnitsAction->setMenuRole(QAction::NoRole);
	_nauticalUnitsAction->setCheckable(true);
	_nauticalUnitsAction->setActionGroup(ag);
	connect(_nauticalUnitsAction, SIGNAL(triggered()), this,
	  SLOT(setNauticalUnits()));
	ag = new QActionGroup(this);
	ag->setExclusive(true);
	_decimalDegreesAction = new QAction(tr("Decimal degrees (DD)"), this);
	_decimalDegreesAction->setMenuRole(QAction::NoRole);
	_decimalDegreesAction->setCheckable(true);
	_decimalDegreesAction->setActionGroup(ag);
	connect(_decimalDegreesAction, SIGNAL(triggered()), this,
	  SLOT(setDecimalDegrees()));
	_degreesMinutesAction = new QAction(tr("Degrees and decimal minutes (DMM)"),
	  this);
	_degreesMinutesAction->setMenuRole(QAction::NoRole);
	_degreesMinutesAction->setCheckable(true);
	_degreesMinutesAction->setActionGroup(ag);
	connect(_degreesMinutesAction, SIGNAL(triggered()), this,
	  SLOT(setDegreesMinutes()));
	_DMSAction = new QAction(tr("Degrees, minutes, seconds (DMS)"), this);
	_DMSAction->setMenuRole(QAction::NoRole);
	_DMSAction->setCheckable(true);
	_DMSAction->setActionGroup(ag);
	connect(_DMSAction, SIGNAL(triggered()), this, SLOT(setDMS()));
	_fullscreenAction = new QAction(QIcon(FULLSCREEN_ICON),
	  tr("Fullscreen mode"), this);
	_fullscreenAction->setMenuRole(QAction::NoRole);
	_fullscreenAction->setCheckable(true);
	_fullscreenAction->setShortcut(FULLSCREEN_SHORTCUT);
	connect(_fullscreenAction, SIGNAL(triggered(bool)), this,
	  SLOT(showFullscreen(bool)));
	addAction(_fullscreenAction);
	_openOptionsAction = new QAction(tr("Options..."), this);
	_openOptionsAction->setMenuRole(QAction::PreferencesRole);
	connect(_openOptionsAction, SIGNAL(triggered()), this,
	  SLOT(openOptions()));

	// Navigation actions
	_nextAction = new QAction(QIcon(NEXT_FILE_ICON), tr("Next"), this);
	_nextAction->setActionGroup(_navigationActionGroup);
	_nextAction->setMenuRole(QAction::NoRole);
	connect(_nextAction, SIGNAL(triggered()), this, SLOT(next()));
	_prevAction = new QAction(QIcon(PREV_FILE_ICON), tr("Previous"), this);
	_prevAction->setMenuRole(QAction::NoRole);
	_prevAction->setActionGroup(_navigationActionGroup);
	connect(_prevAction, SIGNAL(triggered()), this, SLOT(prev()));
	_lastAction = new QAction(QIcon(LAST_FILE_ICON), tr("Last"), this);
	_lastAction->setMenuRole(QAction::NoRole);
	_lastAction->setActionGroup(_navigationActionGroup);
	connect(_lastAction, SIGNAL(triggered()), this, SLOT(last()));
	_firstAction = new QAction(QIcon(FIRST_FILE_ICON), tr("First"), this);
	_firstAction->setMenuRole(QAction::NoRole);
	_firstAction->setActionGroup(_navigationActionGroup);
	connect(_firstAction, SIGNAL(triggered()), this, SLOT(first()));
}

void GUI::createMenus()
{
	QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
	fileMenu->addAction(_openFileAction);
	fileMenu->addSeparator();
	fileMenu->addAction(_printFileAction);
	fileMenu->addAction(_exportFileAction);
	fileMenu->addSeparator();
	fileMenu->addAction(_statisticsAction);
	fileMenu->addSeparator();
	fileMenu->addAction(_reloadFileAction);
	fileMenu->addAction(_closeFileAction);
#ifndef Q_OS_MAC
	fileMenu->addSeparator();
	fileMenu->addAction(_exitAction);
#endif // Q_OS_MAC

	_mapMenu = menuBar()->addMenu(tr("&Map"));
	_mapMenu->addActions(_mapActions);
	_mapsEnd = _mapMenu->addSeparator();
	_mapMenu->addAction(_loadMapAction);
	_mapMenu->addAction(_clearMapCacheAction);
	_mapMenu->addSeparator();
	_mapMenu->addAction(_showMapAction);

	QMenu *graphMenu = menuBar()->addMenu(tr("&Graph"));
	graphMenu->addAction(_distanceGraphAction);
	graphMenu->addAction(_timeGraphAction);
	graphMenu->addSeparator();
	graphMenu->addAction(_showGraphGridAction);
	graphMenu->addAction(_showGraphSliderInfoAction);
	graphMenu->addSeparator();
	graphMenu->addAction(_showGraphsAction);

	QMenu *poiMenu = menuBar()->addMenu(tr("&POI"));
	_poiFilesMenu = poiMenu->addMenu(tr("POI files"));
	_poiFilesMenu->addActions(_poiFilesActions);
	poiMenu->addSeparator();
	poiMenu->addAction(_openPOIAction);
	poiMenu->addAction(_closePOIAction);
	poiMenu->addSeparator();
	poiMenu->addAction(_showPOILabelsAction);
	poiMenu->addAction(_overlapPOIAction);
	poiMenu->addSeparator();
	poiMenu->addAction(_showPOIAction);

	QMenu *dataMenu = menuBar()->addMenu(tr("&Data"));
	QMenu *displayMenu = dataMenu->addMenu(tr("Display"));
	displayMenu->addAction(_showWaypointLabelsAction);
	displayMenu->addAction(_showRouteWaypointsAction);
	dataMenu->addSeparator();
	dataMenu->addAction(_showTracksAction);
	dataMenu->addAction(_showRoutesAction);
	dataMenu->addAction(_showWaypointsAction);

	QMenu *settingsMenu = menuBar()->addMenu(tr("&Settings"));
	QMenu *timeMenu = settingsMenu->addMenu(tr("Time"));
	timeMenu->addAction(_totalTimeAction);
	timeMenu->addAction(_movingTimeAction);
	QMenu *unitsMenu = settingsMenu->addMenu(tr("Units"));
	unitsMenu->addAction(_metricUnitsAction);
	unitsMenu->addAction(_imperialUnitsAction);
	unitsMenu->addAction(_nauticalUnitsAction);
	QMenu *coordinatesMenu = settingsMenu->addMenu(tr("Coordinates format"));
	coordinatesMenu->addAction(_decimalDegreesAction);
	coordinatesMenu->addAction(_degreesMinutesAction);
	coordinatesMenu->addAction(_DMSAction);
	settingsMenu->addSeparator();
	settingsMenu->addAction(_showToolbarsAction);
	settingsMenu->addAction(_fullscreenAction);
	settingsMenu->addSeparator();
	settingsMenu->addAction(_openOptionsAction);

	QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
	helpMenu->addAction(_pathsAction);
	helpMenu->addAction(_keysAction);
	helpMenu->addSeparator();
	helpMenu->addAction(_aboutAction);
}

void GUI::createToolBars()
{
	int is = style()->pixelMetric(QStyle::PM_ToolBarIconSize);
	QSize iconSize(qMin(is, TOOLBAR_ICON_SIZE), qMin(is, TOOLBAR_ICON_SIZE));

#ifdef Q_OS_MAC
	setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
#endif // Q_OS_MAC

	_fileToolBar = addToolBar(tr("File"));
	_fileToolBar->setIconSize(iconSize);
	_fileToolBar->addAction(_openFileAction);
	_fileToolBar->addAction(_reloadFileAction);
	_fileToolBar->addAction(_closeFileAction);
	_fileToolBar->addAction(_printFileAction);

	_showToolBar = addToolBar(tr("Show"));
	_showToolBar->setIconSize(iconSize);
	_showToolBar->addAction(_showPOIAction);
	_showToolBar->addAction(_showMapAction);
	_showToolBar->addAction(_showGraphsAction);

	_navigationToolBar = addToolBar(tr("Navigation"));
	_navigationToolBar->setIconSize(iconSize);
	_navigationToolBar->addAction(_firstAction);
	_navigationToolBar->addAction(_prevAction);
	_navigationToolBar->addAction(_nextAction);
	_navigationToolBar->addAction(_lastAction);
}

void GUI::createMapView()
{
	_mapView = new MapView(_map, _poi, this);
	_mapView->setSizePolicy(QSizePolicy(QSizePolicy::Ignored,
	  QSizePolicy::Expanding));
	_mapView->setMinimumHeight(200);
#ifdef Q_OS_WIN32
	_mapView->setFrameShape(QFrame::NoFrame);
#endif // Q_OS_WIN32
}

void GUI::createGraphTabs()
{
	_graphTabWidget = new QTabWidget();
	connect(_graphTabWidget, SIGNAL(currentChanged(int)), this,
	  SLOT(graphChanged(int)));

	_graphTabWidget->setSizePolicy(QSizePolicy(QSizePolicy::Ignored,
	  QSizePolicy::Preferred));
	_graphTabWidget->setMinimumHeight(200);
#ifdef Q_OS_WIN32
	_graphTabWidget->setDocumentMode(true);
#endif // Q_OS_WIN32

	_tabs.append(new ElevationGraph(_graphTabWidget));
	_tabs.append(new SpeedGraph(_graphTabWidget));
	_tabs.append(new HeartRateGraph(_graphTabWidget));
	_tabs.append(new CadenceGraph(_graphTabWidget));
	_tabs.append(new PowerGraph(_graphTabWidget));
	_tabs.append(new TemperatureGraph(_graphTabWidget));
	_tabs.append(new GearRatioGraph(_graphTabWidget));

	for (int i = 0; i < _tabs.count(); i++)
		connect(_tabs.at(i), SIGNAL(sliderPositionChanged(qreal)), this,
		  SLOT(sliderPositionChanged(qreal)));
}

void GUI::createStatusBar()
{
	_fileNameLabel = new QLabel();
	_distanceLabel = new QLabel();
	_timeLabel = new QLabel();
	_distanceLabel->setAlignment(Qt::AlignHCenter);
	_timeLabel->setAlignment(Qt::AlignHCenter);

	statusBar()->addPermanentWidget(_fileNameLabel, 8);
	statusBar()->addPermanentWidget(_distanceLabel, 1);
	statusBar()->addPermanentWidget(_timeLabel, 1);
	statusBar()->setSizeGripEnabled(false);
}

void GUI::about()
{
	QMessageBox msgBox(this);
	QUrl homepage(APP_HOMEPAGE);

	msgBox.setWindowTitle(tr("About GPXSee"));
	msgBox.setText("<h2>" + QString(APP_NAME) + "</h2><p><p>" + tr("Version ")
	  + APP_VERSION + " (" + CPU_ARCH + ", Qt " + QT_VERSION_STR + ")</p>");
	msgBox.setInformativeText("<table width=\"300\"><tr><td>"
	  + tr("GPXSee is distributed under the terms of the GNU General Public "
	  "License version 3. For more info about GPXSee visit the project "
	  "homepage at ") + "<a href=\"" + homepage.toString() + "\">"
	  + homepage.toString(QUrl::RemoveScheme).mid(2)
	  + "</a>.</td></tr></table>");

	QIcon icon = msgBox.windowIcon();
	QSize size = icon.actualSize(QSize(64, 64));
	msgBox.setIconPixmap(icon.pixmap(size));

	msgBox.exec();
}

void GUI::keys()
{
	QMessageBox msgBox(this);

	msgBox.setWindowTitle(tr("Keyboard controls"));
	msgBox.setText("<h3>" + tr("Keyboard controls") + "</h3>");
	msgBox.setInformativeText(
	  "<style>td {padding-right: 1.5em;}</style><div><table><tr><td>"
	  + tr("Next file") + "</td><td><i>" + QKeySequence(NEXT_KEY).toString()
	  + "</i></td></tr><tr><td>" + tr("Previous file")
	  + "</td><td><i>" + QKeySequence(PREV_KEY).toString()
	  + "</i></td></tr><tr><td>" + tr("First file") + "</td><td><i>"
	  + QKeySequence(FIRST_KEY).toString() + "</i></td></tr><tr><td>"
	  + tr("Last file") + "</td><td><i>" + QKeySequence(LAST_KEY).toString()
	  + "</i></td></tr><tr><td>" + tr("Append file")
	  + "</td><td><i>" + QKeySequence(MODIFIER).toString() + tr("Next/Previous")
	  + "</i></td></tr><tr><td></td><td></td></tr><tr><td>"
	  + tr("Toggle graph type") + "</td><td><i>"
	  + QKeySequence(TOGGLE_GRAPH_TYPE_KEY).toString() + "</i></td></tr><tr><td>"
	  + tr("Toggle time type") + "</td><td><i>"
	  + QKeySequence(TOGGLE_TIME_TYPE_KEY).toString()
	  + "<tr><td></td><td></td></tr><tr><td>" + tr("Next map")
	  + "</td><td><i>" + NEXT_MAP_SHORTCUT.toString() + "</i></td></tr><tr><td>"
	  + tr("Previous map") + "</td><td><i>" + PREV_MAP_SHORTCUT.toString()
	  + "</i></td></tr><tr><td></td><td></td></tr><tr><td>" + tr("Zoom in")
	  + "</td><td><i>" + QKeySequence(ZOOM_IN).toString()
	  + "</i></td></tr><tr><td>" + tr("Zoom out") + "</td><td><i>"
	  + QKeySequence(ZOOM_OUT).toString() + "</i></td></tr><tr><td>"
	  + tr("Digital zoom") + "</td><td><i>" + QKeySequence(MODIFIER).toString()
	  + tr("Zoom") + "</i></td></tr></table></div>");

	msgBox.exec();
}

void GUI::paths()
{
	QMessageBox msgBox(this);

	msgBox.setWindowTitle(tr("Paths"));
	msgBox.setText("<h3>" + tr("Paths") + "</h3>");
	msgBox.setInformativeText(
	  "<style>td {white-space: pre; padding-right: 1em;}</style><h4>"
	  + tr("Global") + "</h4><table><tr><td>" + tr("Map directory:")
	  + "</td><td><code>" + QDir::cleanPath(GLOBAL_MAP_DIR)
	  + "</code></td></tr><tr><td>" + tr("POI directory:") + "</td><td><code>"
	  + QDir::cleanPath(GLOBAL_POI_DIR) + "</code></td></tr><tr><td>"
	  + tr("GCS/PCS directory:") + "</td><td><code>"
	  + QDir::cleanPath(GLOBAL_CSV_DIR) + "</code></td></tr></table>"
	  + "<h4>" + tr("User-specific") + "</h4><table><tr><td>"
	  + tr("Map directory:") + "</td><td><code>" + QDir::cleanPath(USER_MAP_DIR)
	  + "</code></td></tr><tr><td>" + tr("POI directory:") + "</td><td><code>"
	  + QDir::cleanPath(USER_POI_DIR) + "</code></td></tr><tr><td>"
	  + tr("GCS/PCS directory:") + "</td><td><code>"
	  + QDir::cleanPath(USER_CSV_DIR) + "</code></td></tr></table>"
	);

	msgBox.exec();
}

void GUI::openFile()
{
	QStringList files = QFileDialog::getOpenFileNames(this, tr("Open file"),
	  _dataDir, Data::formats());
	QStringList list = files;

	for (QStringList::Iterator it = list.begin(); it != list.end(); it++)
		openFile(*it);
	if (!list.isEmpty())
		_dataDir = QFileInfo(list.first()).path();
}

bool GUI::openFile(const QString &fileName)
{
	if (fileName.isEmpty() || _files.contains(fileName))
		return false;

	if (loadFile(fileName)) {
		_files.append(fileName);
		_browser->setCurrent(fileName);
		_fileActionGroup->setEnabled(true);
		_navigationActionGroup->setEnabled(true);

		updateNavigationActions();
		updateStatusBarInfo();
		updateWindowTitle();

		return true;
	} else {
		if (_files.isEmpty())
			_fileActionGroup->setEnabled(false);

		return false;
	}
}

bool GUI::loadFile(const QString &fileName)
{
	Data data;
	QList<QList<GraphItem*> > graphs;
	QList<PathItem*> paths;

	if (data.loadFile(fileName)) {
		for (int i = 0; i < data.tracks().count(); i++) {
			_trackDistance += data.tracks().at(i)->distance();
			_time += data.tracks().at(i)->time();
			_movingTime += data.tracks().at(i)->movingTime();
			const QDate &date = data.tracks().at(i)->date().date();
			if (_dateRange.first.isNull() || _dateRange.first > date)
				_dateRange.first = date;
			if (_dateRange.second.isNull() || _dateRange.second < date)
				_dateRange.second = date;
		}
		_trackCount += data.tracks().count();

		for (int i = 0; i < data.routes().count(); i++)
			_routeDistance += data.routes().at(i)->distance();
		_routeCount += data.routes().count();

		_waypointCount += data.waypoints().count();

		if (_pathName.isNull()) {
			if (data.tracks().count() == 1 && !data.routes().count())
				_pathName = data.tracks().first()->name();
			else if (data.routes().count() == 1 && !data.tracks().count())
				_pathName = data.routes().first()->name();
		} else
			_pathName = QString();

		for (int i = 0; i < _tabs.count(); i++)
			graphs.append(_tabs.at(i)->loadData(data));
		if (updateGraphTabs() | updateMapView())
			_splitter->refresh();
		paths = _mapView->loadData(data);

		for (int i = 0; i < paths.count(); i++) {
			const PathItem *pi = paths.at(i);
			for (int j = 0; j < graphs.count(); j++) {
				const GraphItem *gi = graphs.at(j).at(i);
				if (!gi)
					continue;
				connect(gi, SIGNAL(sliderPositionChanged(qreal)), pi,
				  SLOT(moveMarker(qreal)));
				connect(pi, SIGNAL(selected(bool)), gi, SLOT(hover(bool)));
				connect(gi, SIGNAL(selected(bool)), pi, SLOT(hover(bool)));
			}
		}

		return true;
	} else {
		updateNavigationActions();
		updateStatusBarInfo();
		updateWindowTitle();
		updateGraphTabs();
		updateMapView();

		QString error = tr("Error loading data file:") + "\n\n"
		  + fileName + "\n\n" + data.errorString();
		if (data.errorLine())
			error.append("\n" + tr("Line: %1").arg(data.errorLine()));
		QMessageBox::critical(this, APP_NAME, error);
		return false;
	}
}

void GUI::openPOIFile()
{
	QStringList files = QFileDialog::getOpenFileNames(this, tr("Open POI file"),
	  _poiDir, Data::formats());
	QStringList list = files;

	for (QStringList::Iterator it = list.begin(); it != list.end(); it++)
		openPOIFile(*it);
	if (!list.isEmpty())
		_poiDir = QFileInfo(list.first()).path();
}

bool GUI::openPOIFile(const QString &fileName)
{
	if (fileName.isEmpty() || _poi->files().contains(fileName))
		return false;

	if (_poi->loadFile(fileName)) {
		_mapView->showPOI(true);
		_showPOIAction->setChecked(true);
		QAction *action = createPOIFileAction(fileName);
		action->setChecked(true);
		_poiFilesMenu->addAction(action);

		return true;
	} else {
		QString error = tr("Error loading POI file:") + "\n\n"
		  + fileName + "\n\n" + _poi->errorString();
		if (_poi->errorLine())
			error.append("\n" + tr("Line: %1").arg(_poi->errorLine()));
		QMessageBox::critical(this, APP_NAME, error);

		return false;
	}
}

void GUI::closePOIFiles()
{
	_poiFilesMenu->clear();

	for (int i = 0; i < _poiFilesActions.count(); i++)
		delete _poiFilesActions[i];
	_poiFilesActions.clear();

	_poi->clear();
}

void GUI::openOptions()
{
#define SET_VIEW_OPTION(option, action) \
	if (options.option != _options.option) \
		_mapView->action(options.option)
#define SET_TAB_OPTION(option, action) \
	if (options.option != _options.option) \
		for (int i = 0; i < _tabs.count(); i++) \
			_tabs.at(i)->action(options.option)
#define SET_TRACK_OPTION(option, action) \
	if (options.option != _options.option) { \
		Track::action(options.option); \
		reload = true; \
	}

	Options options(_options);
	bool reload = false;

	OptionsDialog dialog(&options, this);
	if (dialog.exec() != QDialog::Accepted)
		return;

	SET_VIEW_OPTION(palette, setPalette);
	SET_VIEW_OPTION(mapOpacity, setMapOpacity);
	SET_VIEW_OPTION(backgroundColor, setBackgroundColor);
	SET_VIEW_OPTION(trackWidth, setTrackWidth);
	SET_VIEW_OPTION(routeWidth, setRouteWidth);
	SET_VIEW_OPTION(trackStyle, setTrackStyle);
	SET_VIEW_OPTION(routeStyle, setRouteStyle);
	SET_VIEW_OPTION(waypointSize, setWaypointSize);
	SET_VIEW_OPTION(waypointColor, setWaypointColor);
	SET_VIEW_OPTION(poiSize, setPOISize);
	SET_VIEW_OPTION(poiColor, setPOIColor);
	SET_VIEW_OPTION(pathAntiAliasing, useAntiAliasing);
	SET_VIEW_OPTION(useOpenGL, useOpenGL);
	SET_VIEW_OPTION(sliderColor, setMarkerColor);

	SET_TAB_OPTION(palette, setPalette);
	SET_TAB_OPTION(graphWidth, setGraphWidth);
	SET_TAB_OPTION(graphAntiAliasing, useAntiAliasing);
	SET_TAB_OPTION(useOpenGL, useOpenGL);
	SET_TAB_OPTION(sliderColor, setSliderColor);

	SET_TRACK_OPTION(elevationFilter, setElevationFilter);
	SET_TRACK_OPTION(speedFilter, setSpeedFilter);
	SET_TRACK_OPTION(heartRateFilter, setHeartRateFilter);
	SET_TRACK_OPTION(cadenceFilter, setCadenceFilter);
	SET_TRACK_OPTION(powerFilter, setPowerFilter);
	SET_TRACK_OPTION(outlierEliminate, setOutlierElimination);
	SET_TRACK_OPTION(pauseSpeed, setPauseSpeed);
	SET_TRACK_OPTION(pauseInterval, setPauseInterval);
	SET_TRACK_OPTION(useReportedSpeed, useReportedSpeed);

	if (options.poiRadius != _options.poiRadius)
		_poi->setRadius(options.poiRadius);
	if (options.pixmapCache != _options.pixmapCache)
		QPixmapCache::setCacheLimit(options.pixmapCache * 1024);
	if (options.connectionTimeout != _options.connectionTimeout)
		Downloader::setTimeout(options.connectionTimeout);
#ifdef ENABLE_HTTP2
	if (options.enableHTTP2 != _options.enableHTTP2)
		Downloader::enableHTTP2(options.enableHTTP2);
#endif // ENABLE_HTTP2
#ifdef ENABLE_HIDPI
	if (options.hidpiMap != _options.hidpiMap)
		_mapView->setDevicePixelRatio(options.hidpiMap ? devicePixelRatioF()
		  : 1.0);
#endif // ENABLE_HIDPI

	if (reload)
		reloadFile();

	_options = options;

	updateMapView();
}

void GUI::printFile()
{
	QPrinter printer(QPrinter::HighResolution);
	QPrintDialog dialog(&printer, this);

	if (dialog.exec() == QDialog::Accepted)
		plot(&printer);
}

void GUI::exportFile()
{
	ExportDialog dialog(&_export, this);
	if (dialog.exec() != QDialog::Accepted)
		return;

	QPrinter printer(QPrinter::HighResolution);
	printer.setOutputFormat(QPrinter::PdfFormat);
	printer.setCreator(QString(APP_NAME) + QString(" ")
	  + QString(APP_VERSION));
	printer.setResolution(_export.resolution);
	printer.setOrientation(_export.orientation);
	printer.setOutputFileName(_export.fileName);
	printer.setPaperSize(_export.paperSize);
	printer.setPageMargins(_export.margins.left(), _export.margins.top(),
	  _export.margins.right(), _export.margins.bottom(), QPrinter::Millimeter);

	plot(&printer);
}

void GUI::statistics()
{
	QLocale l(QLocale::system());

#ifdef Q_OS_WIN32
	QString text = "<style>td {white-space: pre; padding-right: 4em;}"
	  "th {text-align: left; padding-top: 0.5em;}</style><table>";
#else // Q_OS_WIN32
	QString text = "<style>td {white-space: pre; padding-right: 2em;}"
	  "th {text-align: left; padding-top: 0.5em;}</style><table>";
#endif // Q_OS_WIN32

	if (_showTracksAction->isChecked() && _trackCount > 1)
		text.append("<tr><td>" + tr("Tracks") + ":</td><td>"
		  + l.toString(_trackCount) + "</td></tr>");
	if (_showRoutesAction->isChecked() && _routeCount > 1)
		text.append("<tr><td>" + tr("Routes") + ":</td><td>"
		  + l.toString(_routeCount) + "</td></tr>");
	if (_showWaypointsAction->isChecked() && _waypointCount > 1)
		text.append("<tr><td>" + tr("Waypoints") + ":</td><td>"
		  + l.toString(_waypointCount) + "</td></tr>");

	if (_dateRange.first.isValid()) {
		if (_dateRange.first == _dateRange.second) {
			QString format = l.dateFormat(QLocale::LongFormat);
			text.append("<tr><td>" + tr("Date") + ":</td><td>"
			  + _dateRange.first.toString(format) + "</td></tr>");
		} else {
			QString format = l.dateFormat(QLocale::ShortFormat);
			text.append("<tr><td>" + tr("Date") + ":</td><td>"
			  + QString("%1 - %2").arg(_dateRange.first.toString(format),
			  _dateRange.second.toString(format)) + "</td></tr>");
		}
	}

	if (distance() > 0)
		text.append("<tr><td>" + tr("Distance") + ":</td><td>"
		  + Format::distance(distance(), units()) + "</td></tr>");
	if (time() > 0) {
		text.append("<tr><td>" + tr("Time") + ":</td><td>"
		  + Format::timeSpan(time()) + "</td></tr>");
		text.append("<tr><td>" + tr("Moving time") + ":</td><td>"
		  + Format::timeSpan(movingTime()) + "</td></tr>");
	}

	for (int i = 0; i < _tabs.count(); i++) {
		const GraphTab *tab = _tabs.at(i);
		if (tab->isEmpty())
			continue;

		text.append("<tr><th colspan=\"2\">" + tab->label() + "</th></tr>");
		for (int j = 0; j < tab->info().size(); j++) {
			const KV &kv = tab->info().at(j);
			text.append("<tr><td>" + kv.key() + ":</td><td>" + kv.value()
			  + "</td></tr>");
		}
	}

	text.append("</table>");


	QMessageBox msgBox(this);
	msgBox.setWindowTitle(tr("Statistics"));
	msgBox.setText("<h3>" + tr("Statistics") + "</h3>");
	msgBox.setInformativeText(text);
	msgBox.exec();
}

void GUI::plot(QPrinter *printer)
{
	QLocale l(QLocale::system());
	QPainter p(printer);
	TrackInfo info;
	qreal ih, gh, mh, ratio;


	if (!_pathName.isNull() && _options.printName)
		info.insert(tr("Name"), _pathName);

	if (_options.printItemCount) {
		if (_showTracksAction->isChecked() && _trackCount > 1)
			info.insert(tr("Tracks"), l.toString(_trackCount));
		if (_showRoutesAction->isChecked() && _routeCount > 1)
			info.insert(tr("Routes"), l.toString(_routeCount));
		if (_showWaypointsAction->isChecked() && _waypointCount > 1)
			info.insert(tr("Waypoints"), l.toString(_waypointCount));
	}

	if (_dateRange.first.isValid() && _options.printDate) {
		if (_dateRange.first == _dateRange.second) {
			QString format = l.dateFormat(QLocale::LongFormat);
			info.insert(tr("Date"), _dateRange.first.toString(format));
		} else {
			QString format = l.dateFormat(QLocale::ShortFormat);
			info.insert(tr("Date"), QString("%1 - %2")
			  .arg(_dateRange.first.toString(format),
			  _dateRange.second.toString(format)));
		}
	}

	if (distance() > 0 && _options.printDistance)
		info.insert(tr("Distance"), Format::distance(distance(), units()));
	if (time() > 0 && _options.printTime)
		info.insert(tr("Time"), Format::timeSpan(time()));
	if (movingTime() > 0 && _options.printMovingTime)
		info.insert(tr("Moving time"), Format::timeSpan(movingTime()));

	qreal fsr = 1085.0 / (qMax(printer->width(), printer->height())
	  / (qreal)printer->resolution());
	ratio = p.paintEngine()->paintDevice()->logicalDpiX() / fsr;
	if (info.isEmpty()) {
		ih = 0;
		mh = 0;
	} else {
		ih = info.contentSize().height() * ratio;
		mh = ih / 2;
		info.plot(&p, QRectF(0, 0, printer->width(), ih), ratio);
	}
	if (_graphTabWidget->isVisible() && !_options.separateGraphPage) {
		qreal r = (((qreal)(printer)->width()) / (qreal)(printer->height()));
		gh = (printer->width() > printer->height())
		  ? 0.15 * r * (printer->height() - ih - 2*mh)
		  : 0.15 * (printer->height() - ih - 2*mh);
		GraphTab *gt = static_cast<GraphTab*>(_graphTabWidget->currentWidget());
		gt->plot(&p,  QRectF(0, printer->height() - gh, printer->width(), gh),
		  ratio);
	} else
		gh = 0;
	_mapView->plot(&p, QRectF(0, ih + mh, printer->width(), printer->height()
	  - (ih + 2*mh + gh)), ratio, _options.hiresPrint);

	if (_graphTabWidget->isVisible() && _options.separateGraphPage) {
		printer->newPage();

		int cnt = 0;
		for (int i = 0; i < _tabs.size(); i++)
			if (!_tabs.at(i)->isEmpty())
				cnt++;

		qreal sp = ratio * 20;
		gh = qMin((printer->height() - ((cnt - 1) * sp))/(qreal)cnt,
		  0.20 * printer->height());

		qreal y = 0;
		for (int i = 0; i < _tabs.size(); i++) {
			if (!_tabs.at(i)->isEmpty()) {
				_tabs.at(i)->plot(&p,  QRectF(0, y, printer->width(), gh),
				  ratio);
				y += gh + sp;
			}
		}
	}
}

void GUI::reloadFile()
{
	_trackCount = 0;
	_routeCount = 0;
	_waypointCount = 0;
	_trackDistance = 0;
	_routeDistance = 0;
	_time = 0;
	_movingTime = 0;
	_dateRange = DateRange(QDate(), QDate());
	_pathName = QString();

	for (int i = 0; i < _tabs.count(); i++)
		_tabs.at(i)->clear();
	_mapView->clear();

	_sliderPos = 0;

	for (int i = 0; i < _files.size(); i++) {
		if (!loadFile(_files.at(i))) {
			_files.removeAt(i);
			i--;
		}
	}

	updateStatusBarInfo();
	updateWindowTitle();
	if (_files.isEmpty())
		_fileActionGroup->setEnabled(false);
	else
		_browser->setCurrent(_files.last());
}

void GUI::closeFiles()
{
	_trackCount = 0;
	_routeCount = 0;
	_waypointCount = 0;
	_trackDistance = 0;
	_routeDistance = 0;
	_time = 0;
	_movingTime = 0;
	_dateRange = DateRange(QDate(), QDate());
	_pathName = QString();

	_sliderPos = 0;

	for (int i = 0; i < _tabs.count(); i++)
		_tabs.at(i)->clear();
	_mapView->clear();

	_files.clear();
}

void GUI::closeAll()
{
	closeFiles();

	_fileActionGroup->setEnabled(false);
	updateStatusBarInfo();
	updateWindowTitle();
	updateGraphTabs();
	updateMapView();
}

void GUI::showGraphs(bool show)
{
	_graphTabWidget->setHidden(!show);
}

void GUI::showToolbars(bool show)
{
	if (show) {
		addToolBar(_fileToolBar);
		addToolBar(_showToolBar);
		addToolBar(_navigationToolBar);
		_fileToolBar->show();
		_showToolBar->show();
		_navigationToolBar->show();
	} else {
		removeToolBar(_fileToolBar);
		removeToolBar(_showToolBar);
		removeToolBar(_navigationToolBar);
	}
}

void GUI::showFullscreen(bool show)
{
	if (show) {
		_frameStyle = _mapView->frameStyle();
		_showGraphs = _showGraphsAction->isChecked();

		statusBar()->hide();
		menuBar()->hide();
		showToolbars(false);
		showGraphs(false);
		_showGraphsAction->setChecked(false);
		_mapView->setFrameStyle(QFrame::NoFrame);

		showFullScreen();
	} else {
		statusBar()->show();
		menuBar()->show();
		if (_showToolbarsAction->isChecked())
			showToolbars(true);
		_showGraphsAction->setChecked(_showGraphs);
		if (_showGraphsAction->isEnabled())
			showGraphs(_showGraphs);
		_mapView->setFrameStyle(_frameStyle);

		showNormal();
	}
}

void GUI::showTracks(bool show)
{
	_mapView->showTracks(show);

	for (int i = 0; i < _tabs.size(); i++)
		_tabs.at(i)->showTracks(show);

	updateStatusBarInfo();
	updateGraphTabs();
}

void GUI::showRoutes(bool show)
{
	_mapView->showRoutes(show);

	for (int i = 0; i < _tabs.size(); i++)
		_tabs.at(i)->showRoutes(show);

	updateStatusBarInfo();
	updateGraphTabs();
}

void GUI::showGraphGrids(bool show)
{
	for (int i = 0; i < _tabs.size(); i++)
		_tabs.at(i)->showGrid(show);
}

void GUI::showGraphSliderInfo(bool show)
{
	for (int i = 0; i < _tabs.size(); i++)
		_tabs.at(i)->showSliderInfo(show);
}

void GUI::loadMap()
{
	QStringList files = QFileDialog::getOpenFileNames(this, tr("Open map file"),
	  _mapDir, MapList::formats());
	QStringList list = files;

	for (QStringList::Iterator it = list.begin(); it != list.end(); it++)
		loadMap(*it);
	if (!list.isEmpty())
		_mapDir = QFileInfo(list.first()).path();
}

bool GUI::loadMap(const QString &fileName)
{
	if (fileName.isEmpty())
		return false;

	if (_ml->loadFile(fileName)) {
		QAction *a = createMapAction(_ml->maps().last());
		_mapMenu->insertAction(_mapsEnd, a);
		_showMapAction->setEnabled(true);
		_clearMapCacheAction->setEnabled(true);
		a->trigger();
		return true;
	} else {
		QString error = tr("Error loading map:") + "\n\n"
		  + fileName + "\n\n" + _ml->errorString();
		QMessageBox::critical(this, APP_NAME, error);

		return false;
	}
}

void GUI::updateStatusBarInfo()
{
	if (_files.count() == 0)
		_fileNameLabel->setText(tr("No files loaded"));
	else if (_files.count() == 1)
		_fileNameLabel->setText(_files.at(0));
	else
		_fileNameLabel->setText(tr("%n files", "", _files.count()));

	if (distance() > 0)
		_distanceLabel->setText(Format::distance(distance(), units()));
	else
		_distanceLabel->clear();

	if (time() > 0) {
		if (_movingTimeAction->isChecked()) {
			_timeLabel->setText(Format::timeSpan(movingTime())
			  + "<sub>M</sub>");
			_timeLabel->setToolTip(Format::timeSpan(time()));
		} else {
			_timeLabel->setText(Format::timeSpan(time()));
			_timeLabel->setToolTip(Format::timeSpan(movingTime())
			  + "<sub>M</sub>");
		}
	} else {
		_timeLabel->clear();
		_timeLabel->setToolTip(QString());
	}
}

void GUI::updateWindowTitle()
{
	if (_files.count() == 1)
		setWindowTitle(QFileInfo(_files.at(0)).fileName() + " - " + APP_NAME);
	else
		setWindowTitle(APP_NAME);
}

void GUI::mapChanged(int index)
{
	_map = _ml->maps().at(index);
	_mapView->setMap(_map);
}

void GUI::nextMap()
{
	if (_ml->maps().count() < 2)
		return;

	int next = (_ml->maps().indexOf(_map) + 1) % _ml->maps().count();
	_mapActions.at(next)->setChecked(true);
	mapChanged(next);
}

void GUI::prevMap()
{
	if (_ml->maps().count() < 2)
		return;

	int prev = (_ml->maps().indexOf(_map) + _ml->maps().count() - 1)
	  % _ml->maps().count();
	_mapActions.at(prev)->setChecked(true);
	mapChanged(prev);
}

void GUI::poiFileChecked(int index)
{
	_poi->enableFile(_poi->files().at(index),
	  _poiFilesActions.at(index)->isChecked());
}

void GUI::sliderPositionChanged(qreal pos)
{
	_sliderPos = pos;
}

void GUI::graphChanged(int index)
{
	if (index < 0)
		return;

	GraphTab *gt = static_cast<GraphTab*>(_graphTabWidget->widget(index));
	gt->setSliderPosition(_sliderPos);
}

void GUI::updateNavigationActions()
{
	if (_browser->isLast()) {
		_nextAction->setEnabled(false);
		_lastAction->setEnabled(false);
	} else {
		_nextAction->setEnabled(true);
		_lastAction->setEnabled(true);
	}

	if (_browser->isFirst()) {
		_prevAction->setEnabled(false);
		_firstAction->setEnabled(false);
	} else {
		_prevAction->setEnabled(true);
		_firstAction->setEnabled(true);
	}
}

bool GUI::updateGraphTabs()
{
	int index;
	GraphTab *tab;
	bool hidden = _graphTabWidget->isHidden();

	for (int i = 0; i < _tabs.size(); i++) {
		tab = _tabs.at(i);
		if (tab->isEmpty() && (index = _graphTabWidget->indexOf(tab)) >= 0)
			_graphTabWidget->removeTab(index);
	}

	for (int i = 0; i < _tabs.size(); i++) {
		tab = _tabs.at(i);
		if (!tab->isEmpty() && _graphTabWidget->indexOf(tab) < 0)
			_graphTabWidget->insertTab(i, tab, _tabs.at(i)->label());
	}

	if (_graphTabWidget->count() &&
	  ((_showTracksAction->isChecked() && _trackCount)
	  || (_showRoutesAction->isChecked() && _routeCount))) {
		if (_showGraphsAction->isChecked())
			_graphTabWidget->setHidden(false);
		_showGraphsAction->setEnabled(true);
	} else {
		_graphTabWidget->setHidden(true);
		_showGraphsAction->setEnabled(false);
	}

	return (hidden != _graphTabWidget->isHidden());
}

bool GUI::updateMapView()
{
	bool hidden = _mapView->isHidden();

	if (_options.alwaysShowMap)
		_mapView->setHidden(false);
	else
		_mapView->setHidden(!(_trackCount + _routeCount + _waypointCount));

	return (hidden != _mapView->isHidden());
}

void GUI::setTimeType(TimeType type)
{
	for (int i = 0; i <_tabs.count(); i++)
		_tabs.at(i)->setTimeType(type);

	updateStatusBarInfo();
}

void GUI::setUnits(Units units)
{
	_export.units = units;
	_options.units = units;

	_mapView->setUnits(units);
	for (int i = 0; i <_tabs.count(); i++)
		_tabs.at(i)->setUnits(units);
	updateStatusBarInfo();
}

void GUI::setCoordinatesFormat(CoordinatesFormat format)
{
	_mapView->setCoordinatesFormat(format);
}

void GUI::setGraphType(GraphType type)
{
	_sliderPos = 0;

	for (int i = 0; i <_tabs.count(); i++) {
		_tabs.at(i)->setGraphType(type);
		_tabs.at(i)->setSliderPosition(0);
	}
}

void GUI::next()
{
	QString file = _browser->next();
	if (file.isNull())
		return;

	closeFiles();
	openFile(file);
}

void GUI::prev()
{
	QString file = _browser->prev();
	if (file.isNull())
		return;

	closeFiles();
	openFile(file);
}

void GUI::last()
{
	QString file = _browser->last();
	if (file.isNull())
		return;

	closeFiles();
	openFile(file);
}

void GUI::first()
{
	QString file = _browser->first();
	if (file.isNull())
		return;

	closeFiles();
	openFile(file);
}

void GUI::keyPressEvent(QKeyEvent *event)
{
	QString file;

	switch (event->key()) {
		case PREV_KEY:
			file = _browser->prev();
			break;
		case NEXT_KEY:
			file = _browser->next();
			break;
		case FIRST_KEY:
			file = _browser->first();
			break;
		case LAST_KEY:
			file = _browser->last();
			break;

		case TOGGLE_GRAPH_TYPE_KEY:
			if (_timeGraphAction->isChecked())
				_distanceGraphAction->trigger();
			else
				_timeGraphAction->trigger();
			break;
		case TOGGLE_TIME_TYPE_KEY:
			if (_movingTimeAction->isChecked())
				_totalTimeAction->trigger();
			else
				_movingTimeAction->trigger();
			break;

		case Qt::Key_Escape:
			if (_fullscreenAction->isChecked()) {
				_fullscreenAction->setChecked(false);
				showFullscreen(false);
				return;
			}
			break;
	}

	if (!file.isNull()) {
		if (!(event->modifiers() & MODIFIER))
			closeFiles();
		openFile(file);
		return;
	}

	QMainWindow::keyPressEvent(event);
}

void GUI::closeEvent(QCloseEvent *event)
{
	writeSettings();
	event->accept();
}

void GUI::dragEnterEvent(QDragEnterEvent *event)
{
	if (!event->mimeData()->hasUrls())
		return;
	if (event->proposedAction() != Qt::CopyAction)
		return;

	QList<QUrl> urls = event->mimeData()->urls();
	for (int i = 0; i < urls.size(); i++)
		if (!urls.at(i).isLocalFile())
			return;

	event->acceptProposedAction();
}

void GUI::dropEvent(QDropEvent *event)
{
	QList<QUrl> urls = event->mimeData()->urls();
	for (int i = 0; i < urls.size(); i++)
		openFile(urls.at(i).toLocalFile());
}

void GUI::writeSettings()
{
	QSettings settings(APP_NAME, APP_NAME);
	settings.clear();

	settings.beginGroup(WINDOW_SETTINGS_GROUP);
	if (size() != WINDOW_SIZE_DEFAULT)
		settings.setValue(WINDOW_SIZE_SETTING, size());
	if (pos() != WINDOW_POS_DEFAULT)
		settings.setValue(WINDOW_POS_SETTING, pos());
	settings.endGroup();

	settings.beginGroup(SETTINGS_SETTINGS_GROUP);
	if ((_movingTimeAction->isChecked() ? Moving : Total) !=
	  TIME_TYPE_DEFAULT)
		settings.setValue(TIME_TYPE_SETTING, _movingTimeAction->isChecked()
		  ? Moving : Total);
	Units units = _imperialUnitsAction->isChecked() ? Imperial
	  : _nauticalUnitsAction->isChecked() ? Nautical : Metric;
	if (units != UNITS_DEFAULT)
		settings.setValue(UNITS_SETTING, units);
	CoordinatesFormat format = _DMSAction->isChecked() ? DMS
	  : _degreesMinutesAction->isChecked() ? DegreesMinutes : DecimalDegrees;
	if (format != COORDINATES_DEFAULT)
		settings.setValue(COORDINATES_SETTING, format);
	if (_showToolbarsAction->isChecked() != SHOW_TOOLBARS_DEFAULT)
		settings.setValue(SHOW_TOOLBARS_SETTING,
		  _showToolbarsAction->isChecked());
	settings.endGroup();

	settings.beginGroup(MAP_SETTINGS_GROUP);
	settings.setValue(CURRENT_MAP_SETTING, _map->name());
	if (_showMapAction->isChecked() != SHOW_MAP_DEFAULT)
		settings.setValue(SHOW_MAP_SETTING, _showMapAction->isChecked());
	settings.endGroup();

	settings.beginGroup(GRAPH_SETTINGS_GROUP);
	if (_showGraphsAction->isChecked() != SHOW_GRAPHS_DEFAULT)
		settings.setValue(SHOW_GRAPHS_SETTING, _showGraphsAction->isChecked());
	if ((_timeGraphAction->isChecked() ? Time : Distance) != GRAPH_TYPE_DEFAULT)
		settings.setValue(GRAPH_TYPE_SETTING, _timeGraphAction->isChecked()
		  ? Time : Distance);
	if (_showGraphGridAction->isChecked() != SHOW_GRAPH_GRIDS_DEFAULT)
		settings.setValue(SHOW_GRAPH_GRIDS_SETTING,
		  _showGraphGridAction->isChecked());
	if (_showGraphSliderInfoAction->isChecked()
	  != SHOW_GRAPH_SLIDER_INFO_DEFAULT)
		settings.setValue(SHOW_GRAPH_SLIDER_INFO_SETTING,
		  _showGraphSliderInfoAction->isChecked());
	settings.endGroup();

	settings.beginGroup(POI_SETTINGS_GROUP);
	if (_showPOIAction->isChecked() != SHOW_POI_DEFAULT)
		settings.setValue(SHOW_POI_SETTING, _showPOIAction->isChecked());
	if (_overlapPOIAction->isChecked() != OVERLAP_POI_DEFAULT)
		settings.setValue(OVERLAP_POI_SETTING, _overlapPOIAction->isChecked());

	int j = 0;
	for (int i = 0; i < _poiFilesActions.count(); i++) {
		if (!_poiFilesActions.at(i)->isChecked()) {
			if (j == 0)
				settings.beginWriteArray(DISABLED_POI_FILE_SETTINGS_PREFIX);
			settings.setArrayIndex(j++);
			settings.setValue(DISABLED_POI_FILE_SETTING, _poi->files().at(i));
		}
	}
	if (j != 0)
		settings.endArray();
	settings.endGroup();

	settings.beginGroup(DATA_SETTINGS_GROUP);
	if (_showTracksAction->isChecked() != SHOW_TRACKS_DEFAULT)
		settings.setValue(SHOW_TRACKS_SETTING, _showTracksAction->isChecked());
	if (_showRoutesAction->isChecked() != SHOW_ROUTES_DEFAULT)
		settings.setValue(SHOW_ROUTES_SETTING, _showRoutesAction->isChecked());
	if (_showWaypointsAction->isChecked() != SHOW_WAYPOINTS_DEFAULT)
		settings.setValue(SHOW_WAYPOINTS_SETTING,
		  _showWaypointsAction->isChecked());
	if (_showWaypointLabelsAction->isChecked() != SHOW_WAYPOINT_LABELS_DEFAULT)
		settings.setValue(SHOW_WAYPOINT_LABELS_SETTING,
		  _showWaypointLabelsAction->isChecked());
	if (_showRouteWaypointsAction->isChecked() != SHOW_ROUTE_WAYPOINTS_DEFAULT)
		settings.setValue(SHOW_ROUTE_WAYPOINTS_SETTING,
		  _showRouteWaypointsAction->isChecked());
	settings.endGroup();

	settings.beginGroup(EXPORT_SETTINGS_GROUP);
	if (_export.orientation != PAPER_ORIENTATION_DEFAULT)
		settings.setValue(PAPER_ORIENTATION_SETTING, _export.orientation);
	if (_export.resolution != RESOLUTION_DEFAULT)
		settings.setValue(RESOLUTION_SETTING, _export.resolution);
	if (_export.paperSize != PAPER_SIZE_DEFAULT)
		settings.setValue(PAPER_SIZE_SETTING, _export.paperSize);
	if (_export.margins.left() != MARGIN_LEFT_DEFAULT)
		settings.setValue(MARGIN_LEFT_SETTING, _export.margins.left());
	if (_export.margins.top() != MARGIN_TOP_DEFAULT)
		settings.setValue(MARGIN_TOP_SETTING, _export.margins.top());
	if (_export.margins.right() != MARGIN_RIGHT_DEFAULT)
		settings.setValue(MARGIN_RIGHT_SETTING, _export.margins.right());
	if (_export.margins.bottom() != MARGIN_BOTTOM_DEFAULT)
		settings.setValue(MARGIN_BOTTOM_SETTING, _export.margins.bottom());
	if (_export.fileName != EXPORT_FILENAME_DEFAULT)
		settings.setValue(EXPORT_FILENAME_SETTING, _export.fileName);
	settings.endGroup();

	settings.beginGroup(OPTIONS_SETTINGS_GROUP);
	if (_options.palette.color() != PALETTE_COLOR_DEFAULT)
		settings.setValue(PALETTE_COLOR_SETTING, _options.palette.color());
	if (_options.palette.shift() != PALETTE_SHIFT_DEFAULT)
		settings.setValue(PALETTE_SHIFT_SETTING, _options.palette.shift());
	if (_options.mapOpacity != MAP_OPACITY_DEFAULT)
		settings.setValue(MAP_OPACITY_SETTING, _options.mapOpacity);
	if (_options.backgroundColor != BACKGROUND_COLOR_DEFAULT)
		settings.setValue(BACKGROUND_COLOR_SETTING, _options.backgroundColor);
	if (_options.trackWidth != TRACK_WIDTH_DEFAULT)
		settings.setValue(TRACK_WIDTH_SETTING, _options.trackWidth);
	if (_options.routeWidth != ROUTE_WIDTH_DEFAULT)
		settings.setValue(ROUTE_WIDTH_SETTING, _options.routeWidth);
	if (_options.trackStyle != TRACK_STYLE_DEFAULT)
		settings.setValue(TRACK_STYLE_SETTING, (int)_options.trackStyle);
	if (_options.routeStyle != ROUTE_STYLE_DEFAULT)
		settings.setValue(ROUTE_STYLE_SETTING, (int)_options.routeStyle);
	if (_options.waypointSize != WAYPOINT_SIZE_DEFAULT)
		settings.setValue(WAYPOINT_SIZE_SETTING, _options.waypointSize);
	if (_options.waypointColor != WAYPOINT_COLOR_DEFAULT)
		settings.setValue(WAYPOINT_COLOR_SETTING, _options.waypointColor);
	if (_options.poiSize != POI_SIZE_DEFAULT)
		settings.setValue(POI_SIZE_SETTING, _options.poiSize);
	if (_options.poiColor != POI_COLOR_DEFAULT)
		settings.setValue(POI_COLOR_SETTING, _options.poiColor);
	if (_options.graphWidth != GRAPH_WIDTH_DEFAULT)
		settings.setValue(GRAPH_WIDTH_SETTING, _options.graphWidth);
	if (_options.pathAntiAliasing != PATH_AA_DEFAULT)
		settings.setValue(PATH_AA_SETTING, _options.pathAntiAliasing);
	if (_options.graphAntiAliasing != GRAPH_AA_DEFAULT)
		settings.setValue(GRAPH_AA_SETTING, _options.graphAntiAliasing);
	if (_options.elevationFilter != ELEVATION_FILTER_DEFAULT)
		settings.setValue(ELEVATION_FILTER_SETTING, _options.elevationFilter);
	if (_options.speedFilter != SPEED_FILTER_DEFAULT)
		settings.setValue(SPEED_FILTER_SETTING, _options.speedFilter);
	if (_options.heartRateFilter != HEARTRATE_FILTER_DEFAULT)
		settings.setValue(HEARTRATE_FILTER_SETTING, _options.heartRateFilter);
	if (_options.cadenceFilter != CADENCE_FILTER_DEFAULT)
		settings.setValue(CADENCE_FILTER_SETTING, _options.cadenceFilter);
	if (_options.powerFilter != POWER_FILTER_DEFAULT)
		settings.setValue(POWER_FILTER_SETTING, _options.powerFilter);
	if (_options.outlierEliminate != OUTLIER_ELIMINATE_DEFAULT)
		settings.setValue(OUTLIER_ELIMINATE_SETTING, _options.outlierEliminate);
	if (_options.pauseSpeed != PAUSE_SPEED_DEFAULT)
		settings.setValue(PAUSE_SPEED_SETTING, _options.pauseSpeed);
	if (_options.pauseInterval != PAUSE_INTERVAL_DEFAULT)
		settings.setValue(PAUSE_INTERVAL_SETTING, _options.pauseInterval);
	if (_options.useReportedSpeed != USE_REPORTED_SPEED_DEFAULT)
		settings.setValue(USE_REPORTED_SPEED_SETTING, _options.useReportedSpeed);
	if (_options.poiRadius != POI_RADIUS_DEFAULT)
		settings.setValue(POI_RADIUS_SETTING, _options.poiRadius);
	if (_options.useOpenGL != USE_OPENGL_DEFAULT)
		settings.setValue(USE_OPENGL_SETTING, _options.useOpenGL);
#ifdef ENABLE_HTTP2
	if (_options.enableHTTP2 != ENABLE_HTTP2_DEFAULT)
		settings.setValue(ENABLE_HTTP2_SETTING, _options.enableHTTP2);
#endif // ENABLE_HTTP2
	if (_options.pixmapCache != PIXMAP_CACHE_DEFAULT)
		settings.setValue(PIXMAP_CACHE_SETTING, _options.pixmapCache);
	if (_options.connectionTimeout != CONNECTION_TIMEOUT_DEFAULT)
		settings.setValue(CONNECTION_TIMEOUT_SETTING, _options.connectionTimeout);
	if (_options.hiresPrint != HIRES_PRINT_DEFAULT)
		settings.setValue(HIRES_PRINT_SETTING, _options.hiresPrint);
	if (_options.printName != PRINT_NAME_DEFAULT)
		settings.setValue(PRINT_NAME_SETTING, _options.printName);
	if (_options.printDate != PRINT_DATE_DEFAULT)
		settings.setValue(PRINT_DATE_SETTING, _options.printDate);
	if (_options.printDistance != PRINT_DISTANCE_DEFAULT)
		settings.setValue(PRINT_DISTANCE_SETTING, _options.printDistance);
	if (_options.printTime != PRINT_TIME_DEFAULT)
		settings.setValue(PRINT_TIME_SETTING, _options.printTime);
	if (_options.printMovingTime != PRINT_MOVING_TIME_DEFAULT)
		settings.setValue(PRINT_MOVING_TIME_SETTING, _options.printMovingTime);
	if (_options.printItemCount != PRINT_ITEM_COUNT_DEFAULT)
		settings.setValue(PRINT_ITEM_COUNT_SETTING, _options.printItemCount);
	if (_options.separateGraphPage != SEPARATE_GRAPH_PAGE_DEFAULT)
		settings.setValue(SEPARATE_GRAPH_PAGE_SETTING,
		  _options.separateGraphPage);
	if (_options.sliderColor != SLIDER_COLOR_DEFAULT)
		settings.setValue(SLIDER_COLOR_SETTING, _options.sliderColor);
	if (_options.alwaysShowMap != ALWAYS_SHOW_MAP_DEFAULT)
		settings.setValue(ALWAYS_SHOW_MAP_SETTING, _options.alwaysShowMap);
#ifdef ENABLE_HIDPI
	if (_options.hidpiMap != HIDPI_MAP_DEFAULT)
		settings.setValue(HIDPI_MAP_SETTING, _options.hidpiMap);
#endif // ENABLE_HIDPI
	settings.endGroup();
}

void GUI::readSettings()
{
	int value;
	QSettings settings(APP_NAME, APP_NAME);

	settings.beginGroup(WINDOW_SETTINGS_GROUP);
	resize(settings.value(WINDOW_SIZE_SETTING, WINDOW_SIZE_DEFAULT).toSize());
	move(settings.value(WINDOW_POS_SETTING, WINDOW_POS_DEFAULT).toPoint());
	settings.endGroup();

	settings.beginGroup(SETTINGS_SETTINGS_GROUP);
	if (settings.value(TIME_TYPE_SETTING, TIME_TYPE_DEFAULT).toInt()
	  == Moving)
		_movingTimeAction->trigger();
	else
		_totalTimeAction->trigger();

	value = settings.value(UNITS_SETTING, UNITS_DEFAULT).toInt();
	if (value == Imperial)
		_imperialUnitsAction->trigger();
	else if (value == Nautical)
		_nauticalUnitsAction->trigger();
	else
		_metricUnitsAction->trigger();

	value = settings.value(COORDINATES_SETTING, COORDINATES_DEFAULT).toInt();
	if (value == DMS)
		_DMSAction->trigger();
	else if (value == DegreesMinutes)
		_degreesMinutesAction->trigger();
	else
		_decimalDegreesAction->trigger();

	if (!settings.value(SHOW_TOOLBARS_SETTING, SHOW_TOOLBARS_DEFAULT).toBool())
		showToolbars(false);
	else
		_showToolbarsAction->setChecked(true);
	settings.endGroup();

	settings.beginGroup(MAP_SETTINGS_GROUP);
	if (settings.value(SHOW_MAP_SETTING, SHOW_MAP_DEFAULT).toBool())
		_showMapAction->setChecked(true);
	else
		_mapView->showMap(false);
	if (_ml->maps().count()) {
		int index = mapIndex(settings.value(CURRENT_MAP_SETTING).toString());
		_mapActions.at(index)->trigger();
	}
	settings.endGroup();

	settings.beginGroup(GRAPH_SETTINGS_GROUP);
	if (!settings.value(SHOW_GRAPHS_SETTING, SHOW_GRAPHS_DEFAULT).toBool())
		showGraphs(false);
	else
		_showGraphsAction->setChecked(true);
	if (settings.value(GRAPH_TYPE_SETTING, GRAPH_TYPE_DEFAULT).toInt()
	  == Time) {
		setTimeGraph();
		_timeGraphAction->setChecked(true);
	} else
		_distanceGraphAction->setChecked(true);
	if (!settings.value(SHOW_GRAPH_GRIDS_SETTING, SHOW_GRAPH_GRIDS_DEFAULT)
	  .toBool())
		showGraphGrids(false);
	else
		_showGraphGridAction->setChecked(true);
	if (!settings.value(SHOW_GRAPH_SLIDER_INFO_SETTING,
	  SHOW_GRAPH_SLIDER_INFO_DEFAULT).toBool())
		showGraphSliderInfo(false);
	else
		_showGraphSliderInfoAction->setChecked(true);
	settings.endGroup();

	settings.beginGroup(POI_SETTINGS_GROUP);
	if (!settings.value(OVERLAP_POI_SETTING, OVERLAP_POI_DEFAULT).toBool())
		_mapView->setPOIOverlap(false);
	else
		_overlapPOIAction->setChecked(true);
	if (!settings.value(LABELS_POI_SETTING, LABELS_POI_DEFAULT).toBool())
		_mapView->showPOILabels(false);
	else
		_showPOILabelsAction->setChecked(true);
	if (settings.value(SHOW_POI_SETTING, SHOW_POI_DEFAULT).toBool())
		_showPOIAction->setChecked(true);
	else
		_mapView->showPOI(false);
	for (int i = 0; i < _poiFilesActions.count(); i++)
		_poiFilesActions.at(i)->setChecked(true);
	int size = settings.beginReadArray(DISABLED_POI_FILE_SETTINGS_PREFIX);
	for (int i = 0; i < size; i++) {
		settings.setArrayIndex(i);
		int index = _poi->files().indexOf(settings.value(
		  DISABLED_POI_FILE_SETTING).toString());
		if (index >= 0) {
			_poi->enableFile(_poi->files().at(index), false);
			_poiFilesActions.at(index)->setChecked(false);
		}
	}
	settings.endArray();
	settings.endGroup();

	settings.beginGroup(DATA_SETTINGS_GROUP);
	if (!settings.value(SHOW_TRACKS_SETTING, SHOW_TRACKS_DEFAULT).toBool()) {
		_mapView->showTracks(false);
		for (int i = 0; i < _tabs.count(); i++)
			_tabs.at(i)->showTracks(false);
	} else
		_showTracksAction->setChecked(true);
	if (!settings.value(SHOW_ROUTES_SETTING, SHOW_ROUTES_DEFAULT).toBool()) {
		_mapView->showRoutes(false);
		for (int i = 0; i < _tabs.count(); i++)
			_tabs.at(i)->showRoutes(false);
	} else
		_showRoutesAction->setChecked(true);
	if (!settings.value(SHOW_WAYPOINTS_SETTING, SHOW_WAYPOINTS_DEFAULT)
	  .toBool())
		_mapView->showWaypoints(false);
	else
		_showWaypointsAction->setChecked(true);
	if (!settings.value(SHOW_WAYPOINT_LABELS_SETTING,
	  SHOW_WAYPOINT_LABELS_DEFAULT).toBool())
		_mapView->showWaypointLabels(false);
	else
		_showWaypointLabelsAction->setChecked(true);
	if (!settings.value(SHOW_ROUTE_WAYPOINTS_SETTING,
	  SHOW_ROUTE_WAYPOINTS_SETTING).toBool())
		_mapView->showRouteWaypoints(false);
	else
		_showRouteWaypointsAction->setChecked(true);
	settings.endGroup();

	settings.beginGroup(EXPORT_SETTINGS_GROUP);
	_export.orientation = (QPrinter::Orientation) settings.value(
	  PAPER_ORIENTATION_SETTING, PAPER_ORIENTATION_DEFAULT).toInt();
	_export.resolution = settings.value(RESOLUTION_SETTING, RESOLUTION_DEFAULT)
	  .toInt();
	_export.paperSize = (QPrinter::PaperSize) settings.value(PAPER_SIZE_SETTING,
	  PAPER_SIZE_DEFAULT).toInt();
	qreal ml = settings.value(MARGIN_LEFT_SETTING, MARGIN_LEFT_DEFAULT)
	  .toReal();
	qreal mt = settings.value(MARGIN_TOP_SETTING, MARGIN_TOP_DEFAULT).toReal();
	qreal mr = settings.value(MARGIN_RIGHT_SETTING, MARGIN_RIGHT_DEFAULT)
	  .toReal();
	qreal mb = settings.value(MARGIN_BOTTOM_SETTING, MARGIN_BOTTOM_DEFAULT)
	  .toReal();
	_export.margins = MarginsF(ml, mt, mr, mb);
	_export.fileName = settings.value(EXPORT_FILENAME_SETTING,
	 EXPORT_FILENAME_DEFAULT).toString();
	settings.endGroup();

	settings.beginGroup(OPTIONS_SETTINGS_GROUP);
	QColor pc = settings.value(PALETTE_COLOR_SETTING, PALETTE_COLOR_DEFAULT)
	  .value<QColor>();
	qreal ps = settings.value(PALETTE_SHIFT_SETTING, PALETTE_SHIFT_DEFAULT)
	  .toDouble();
	_options.palette = Palette(pc, ps);
	_options.mapOpacity = settings.value(MAP_OPACITY_SETTING,
	  MAP_OPACITY_DEFAULT).toInt();
	_options.backgroundColor = settings.value(BACKGROUND_COLOR_SETTING,
	  BACKGROUND_COLOR_DEFAULT).value<QColor>();
	_options.trackWidth = settings.value(TRACK_WIDTH_SETTING,
	  TRACK_WIDTH_DEFAULT).toInt();
	_options.routeWidth = settings.value(ROUTE_WIDTH_SETTING,
	  ROUTE_WIDTH_DEFAULT).toInt();
	_options.trackStyle = (Qt::PenStyle) settings.value(TRACK_STYLE_SETTING,
	  (int)TRACK_STYLE_DEFAULT).toInt();
	_options.routeStyle = (Qt::PenStyle) settings.value(ROUTE_STYLE_SETTING,
	  (int)ROUTE_STYLE_DEFAULT).toInt();
	_options.pathAntiAliasing = settings.value(PATH_AA_SETTING, PATH_AA_DEFAULT)
	  .toBool();
	_options.waypointSize = settings.value(WAYPOINT_SIZE_SETTING,
	  WAYPOINT_SIZE_DEFAULT).toInt();
	_options.waypointColor = settings.value(WAYPOINT_COLOR_SETTING,
	  WAYPOINT_COLOR_DEFAULT).value<QColor>();
	_options.poiSize = settings.value(POI_SIZE_SETTING, POI_SIZE_DEFAULT)
	  .toInt();
	_options.poiColor = settings.value(POI_COLOR_SETTING, POI_COLOR_DEFAULT)
	  .value<QColor>();
	_options.graphWidth = settings.value(GRAPH_WIDTH_SETTING,
	  GRAPH_WIDTH_DEFAULT).toInt();
	_options.graphAntiAliasing = settings.value(GRAPH_AA_SETTING,
	  GRAPH_AA_DEFAULT).toBool();
	_options.elevationFilter = settings.value(ELEVATION_FILTER_SETTING,
	  ELEVATION_FILTER_DEFAULT).toInt();
	_options.speedFilter = settings.value(SPEED_FILTER_SETTING,
	  SPEED_FILTER_DEFAULT).toInt();
	_options.heartRateFilter = settings.value(HEARTRATE_FILTER_SETTING,
	  HEARTRATE_FILTER_DEFAULT).toInt();
	_options.cadenceFilter = settings.value(CADENCE_FILTER_SETTING,
	  CADENCE_FILTER_DEFAULT).toInt();
	_options.powerFilter = settings.value(POWER_FILTER_SETTING,
	  POWER_FILTER_DEFAULT).toInt();
	_options.outlierEliminate = settings.value(OUTLIER_ELIMINATE_SETTING,
	  OUTLIER_ELIMINATE_DEFAULT).toBool();
	_options.pauseSpeed = settings.value(PAUSE_SPEED_SETTING,
	  PAUSE_SPEED_DEFAULT).toFloat();
	_options.useReportedSpeed = settings.value(USE_REPORTED_SPEED_SETTING,
	  USE_REPORTED_SPEED_DEFAULT).toBool();
	_options.pauseInterval = settings.value(PAUSE_INTERVAL_SETTING,
	  PAUSE_INTERVAL_DEFAULT).toInt();
	_options.poiRadius = settings.value(POI_RADIUS_SETTING, POI_RADIUS_DEFAULT)
	  .toInt();
	_options.useOpenGL = settings.value(USE_OPENGL_SETTING, USE_OPENGL_DEFAULT)
	  .toBool();
#ifdef ENABLE_HTTP2
	_options.enableHTTP2 = settings.value(ENABLE_HTTP2_SETTING,
	  ENABLE_HTTP2_DEFAULT).toBool();
#endif // ENABLE_HTTP2
	_options.pixmapCache = settings.value(PIXMAP_CACHE_SETTING,
	  PIXMAP_CACHE_DEFAULT).toInt();
	_options.connectionTimeout = settings.value(CONNECTION_TIMEOUT_SETTING,
	  CONNECTION_TIMEOUT_DEFAULT).toInt();
	_options.hiresPrint = settings.value(HIRES_PRINT_SETTING,
	  HIRES_PRINT_DEFAULT).toBool();
	_options.printName = settings.value(PRINT_NAME_SETTING, PRINT_NAME_DEFAULT)
	  .toBool();
	_options.printDate = settings.value(PRINT_DATE_SETTING, PRINT_DATE_DEFAULT)
	  .toBool();
	_options.printDistance = settings.value(PRINT_DISTANCE_SETTING,
	  PRINT_DISTANCE_DEFAULT).toBool();
	_options.printTime = settings.value(PRINT_TIME_SETTING, PRINT_TIME_DEFAULT)
	  .toBool();
	_options.printMovingTime = settings.value(PRINT_MOVING_TIME_SETTING,
	  PRINT_MOVING_TIME_DEFAULT).toBool();
	_options.printItemCount = settings.value(PRINT_ITEM_COUNT_SETTING,
	  PRINT_ITEM_COUNT_DEFAULT).toBool();
	_options.separateGraphPage = settings.value(SEPARATE_GRAPH_PAGE_SETTING,
	  SEPARATE_GRAPH_PAGE_DEFAULT).toBool();
	_options.sliderColor = settings.value(SLIDER_COLOR_SETTING,
	  SLIDER_COLOR_DEFAULT).value<QColor>();
	_options.alwaysShowMap = settings.value(ALWAYS_SHOW_MAP_SETTING,
	  ALWAYS_SHOW_MAP_DEFAULT).toBool();
#ifdef ENABLE_HIDPI
	_options.hidpiMap = settings.value(HIDPI_MAP_SETTING, HIDPI_MAP_SETTING)
	  .toBool();
#endif // ENABLE_HIDPI

	_mapView->setPalette(_options.palette);
	_mapView->setMapOpacity(_options.mapOpacity);
	_mapView->setBackgroundColor(_options.backgroundColor);
	_mapView->setTrackWidth(_options.trackWidth);
	_mapView->setRouteWidth(_options.routeWidth);
	_mapView->setTrackStyle(_options.trackStyle);
	_mapView->setRouteStyle(_options.routeStyle);
	_mapView->setWaypointSize(_options.waypointSize);
	_mapView->setWaypointColor(_options.waypointColor);
	_mapView->setPOISize(_options.poiSize);
	_mapView->setPOIColor(_options.poiColor);
	_mapView->setRenderHint(QPainter::Antialiasing, _options.pathAntiAliasing);
	_mapView->setMarkerColor(_options.sliderColor);
	if (_options.useOpenGL)
		_mapView->useOpenGL(true);
#ifdef ENABLE_HIDPI
	_mapView->setDevicePixelRatio(_options.hidpiMap ? devicePixelRatioF() : 1.0);
#endif // ENABLE_HIDPI

	for (int i = 0; i < _tabs.count(); i++) {
		_tabs.at(i)->setPalette(_options.palette);
		_tabs.at(i)->setGraphWidth(_options.graphWidth);
		_tabs.at(i)->setRenderHint(QPainter::Antialiasing,
		  _options.graphAntiAliasing);
		_tabs.at(i)->setSliderColor(_options.sliderColor);
		if (_options.useOpenGL)
			_tabs.at(i)->useOpenGL(true);
	}

	Track::setElevationFilter(_options.elevationFilter);
	Track::setSpeedFilter(_options.speedFilter);
	Track::setHeartRateFilter(_options.heartRateFilter);
	Track::setCadenceFilter(_options.cadenceFilter);
	Track::setPowerFilter(_options.powerFilter);
	Track::setOutlierElimination(_options.outlierEliminate);
	Track::setPauseSpeed(_options.pauseSpeed);
	Track::setPauseInterval(_options.pauseInterval);
	Track::useReportedSpeed(_options.useReportedSpeed);

	_poi->setRadius(_options.poiRadius);

	QPixmapCache::setCacheLimit(_options.pixmapCache * 1024);

	settings.endGroup();
}

int GUI::mapIndex(const QString &name)
{
	for (int i = 0; i < _ml->maps().count(); i++)
		if (_ml->maps().at(i)->name() == name)
			return i;

	return 0;
}

Units GUI::units() const
{
	return _imperialUnitsAction->isChecked() ? Imperial
	  : _nauticalUnitsAction->isChecked() ? Nautical : Metric;
}

qreal GUI::distance() const
{
	qreal dist = 0;

	if (_showTracksAction->isChecked())
		dist += _trackDistance;
	if (_showRoutesAction->isChecked())
		dist += _routeDistance;

	return dist;
}

qreal GUI::time() const
{
	return (_showTracksAction->isChecked()) ? _time : 0;
}

qreal GUI::movingTime() const
{
	return (_showTracksAction->isChecked()) ? _movingTime : 0;
}

void GUI::show()
{
	QMainWindow::show();

#ifdef ENABLE_HIDPI
	QWindow *w = windowHandle();
	connect(w->screen(), SIGNAL(logicalDotsPerInchChanged(qreal)), this,
	  SLOT(logicalDotsPerInchChanged(qreal)));
	connect(w, SIGNAL(screenChanged(QScreen*)), this,
	  SLOT(screenChanged(QScreen*)));
#endif // ENABLE_HIDPI
}

void GUI::screenChanged(QScreen *screen)
{
#ifdef ENABLE_HIDPI
	_mapView->setDevicePixelRatio(_options.hidpiMap ? devicePixelRatioF() : 1.0);

	disconnect(SIGNAL(logicalDotsPerInchChanged(qreal)), this,
	  SLOT(logicalDotsPerInchChanged(qreal)));
	connect(screen, SIGNAL(logicalDotsPerInchChanged(qreal)), this,
	  SLOT(logicalDotsPerInchChanged(qreal)));
#else // ENABLE_HIDPI
	Q_UNUSED(screen);
#endif // ENABLE_HIDPI
}

void GUI::logicalDotsPerInchChanged(qreal dpi)
{
	Q_UNUSED(dpi)

#ifdef ENABLE_HIDPI
	_mapView->setDevicePixelRatio(_options.hidpiMap ? devicePixelRatioF() : 1.0);
#endif // ENBLE_HIDPI
}