/*
- * Copyright © 2012 Mike Beattie <mike@ethernal.org>
+ * Copyright © 2012-2013 Mike Beattie <mike@ethernal.org>
*
* 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
package org.altusmetrum.AltosDroid;
import java.lang.ref.WeakReference;
+import java.util.ArrayList;
+import java.util.Timer;
+import java.util.TimerTask;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.content.Context;
import android.content.ComponentName;
import android.content.ServiceConnection;
+import android.content.DialogInterface;
import android.os.IBinder;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
-import android.speech.tts.TextToSpeech;
-import android.speech.tts.TextToSpeech.OnInitListener;
-import android.text.method.ScrollingMovementMethod;
+import android.support.v4.app.FragmentActivity;
+import android.support.v4.app.FragmentManager;
+import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.Window;
+import android.view.View;
+import android.widget.TabHost;
import android.widget.TextView;
+import android.widget.RelativeLayout;
import android.widget.Toast;
+import android.app.AlertDialog;
+import android.location.Location;
-import org.altusmetrum.AltosLib.*;
+import org.altusmetrum.altoslib_5.*;
-/**
- * This is the main Activity that displays the current chat session.
- */
-public class AltosDroid extends Activity {
+public class AltosDroid extends FragmentActivity implements AltosUnitsListener {
// Debugging
- private static final String TAG = "AltosDroid";
- private static final boolean D = true;
+ static final String TAG = "AltosDroid";
+ static final boolean D = true;
// Message types received by our Handler
- public static final int MSG_STATE_CHANGE = 1;
- public static final int MSG_TELEMETRY = 2;
+
+ public static final int MSG_STATE = 1;
+ public static final int MSG_UPDATE_AGE = 2;
// Intent request codes
- private static final int REQUEST_CONNECT_DEVICE = 1;
- private static final int REQUEST_ENABLE_BT = 2;
+ public static final int REQUEST_CONNECT_DEVICE = 1;
+ public static final int REQUEST_ENABLE_BT = 2;
+
+ public static FragmentManager fm;
+
+ private BluetoothAdapter mBluetoothAdapter = null;
// Layout Views
private TextView mTitle;
private TextView mRSSIView;
private TextView mSerialView;
private TextView mFlightView;
+ private RelativeLayout mStateLayout;
private TextView mStateView;
- private TextView mSpeedView;
- private TextView mAccelView;
- private TextView mRangeView;
- private TextView mHeightView;
- private TextView mElevationView;
- private TextView mBearingView;
- private TextView mLatitudeView;
- private TextView mLongitudeView;
-
- // Generic field for extras at the bottom
- private TextView mTextView;
+ private TextView mAgeView;
+
+ // field to display the version at the bottom of the screen
+ private TextView mVersion;
+
+ private double frequency;
+ private int telemetry_rate;
+
+ // Tabs
+ TabHost mTabHost;
+ AltosViewPager mViewPager;
+ TabsAdapter mTabsAdapter;
+ ArrayList<AltosDroidTab> mTabs = new ArrayList<AltosDroidTab>();
+ int tabHeight;
+
+ // Timer and Saved flight state for Age calculation
+ private Timer timer;
+ AltosState saved_state;
// Service
private boolean mIsBound = false;
private Messenger mService = null;
final Messenger mMessenger = new Messenger(new IncomingHandler(this));
- // TeleBT Config data
- private AltosConfigData mConfigData = null;
- // Local Bluetooth adapter
- private BluetoothAdapter mBluetoothAdapter = null;
-
// Text to Speech
- private TextToSpeech tts = null;
- private boolean tts_enabled = false;
+ private AltosVoice mAltosVoice = null;
// The Handler that gets information back from the Telemetry Service
static class IncomingHandler extends Handler {
@Override
public void handleMessage(Message msg) {
AltosDroid ad = mAltosDroid.get();
+
switch (msg.what) {
- case MSG_STATE_CHANGE:
- if(D) Log.d(TAG, "MSG_STATE_CHANGE: " + msg.arg1);
- switch (msg.arg1) {
- case TelemetryService.STATE_CONNECTED:
- ad.mConfigData = (AltosConfigData) msg.obj;
- String str = String.format(" %s S/N: %d", ad.mConfigData.product, ad.mConfigData.serial);
- ad.mTitle.setText(R.string.title_connected_to);
- ad.mTitle.append(str);
- Toast.makeText(ad.getApplicationContext(), "Connected to " + str, Toast.LENGTH_SHORT).show();
- //TEST!
- ad.mTextView.setText(Dumper.dump(ad.mConfigData));
- break;
- case TelemetryService.STATE_CONNECTING:
- ad.mTitle.setText(R.string.title_connecting);
- break;
- case TelemetryService.STATE_READY:
- case TelemetryService.STATE_NONE:
- ad.mConfigData = null;
- ad.mTitle.setText(R.string.title_not_connected);
- ad.mTextView.setText("");
- break;
+ case MSG_STATE:
+ if(D) Log.d(TAG, "MSG_STATE");
+ TelemetryState telemetry_state = (TelemetryState) msg.obj;
+ if (telemetry_state == null) {
+ Log.d(TAG, "telemetry_state null!");
+ return;
}
+
+ ad.update_state(telemetry_state);
break;
- case MSG_TELEMETRY:
- ad.update_ui((AltosState) msg.obj);
- // TEST!
- ad.mTextView.setText(Dumper.dump(msg.obj));
+ case MSG_UPDATE_AGE:
+ if(D) Log.d(TAG, "MSG_UPDATE_AGE");
+ ad.update_age();
break;
}
}
}
};
-
void doBindService() {
bindService(new Intent(this, TelemetryService.class), mConnection, Context.BIND_AUTO_CREATE);
mIsBound = true;
}
}
- void update_ui(AltosState state) {
- mCallsignView.setText(state.data.callsign);
- mRSSIView.setText(String.format("%d", state.data.rssi));
- mSerialView.setText(String.format("%d", state.data.serial));
- mFlightView.setText(String.format("%d", state.data.flight));
- mStateView.setText(state.data.state());
- double speed = state.speed;
- if (!state.ascent)
- speed = state.baro_speed;
- mSpeedView.setText(String.format("%6.0f m/s", speed));
- mAccelView.setText(String.format("%6.0f m/s²", state.acceleration));
- mRangeView.setText(String.format("%6.0f m", state.range));
- mHeightView.setText(String.format("%6.0f m", state.height));
- mElevationView.setText(String.format("%3.0f°", state.elevation));
- if (state.from_pad != null)
- mBearingView.setText(String.format("%3.0f°", state.from_pad.bearing));
- mLatitudeView.setText(pos(state.gps.lat, "N", "S"));
- mLongitudeView.setText(pos(state.gps.lon, "W", "E"));
+ public void registerTab(AltosDroidTab mTab) {
+ mTabs.add(mTab);
+ }
+
+ public void unregisterTab(AltosDroidTab mTab) {
+ mTabs.remove(mTab);
+ }
+
+ public void units_changed(boolean imperial_units) {
+ for (AltosDroidTab mTab : mTabs)
+ mTab.units_changed(imperial_units);
+ }
+
+ void update_title(TelemetryState telemetry_state) {
+ switch (telemetry_state.connect) {
+ case TelemetryState.CONNECT_CONNECTED:
+ if (telemetry_state.config != null) {
+ String str = String.format("S/N %d %6.3f MHz", telemetry_state.config.serial,
+ telemetry_state.frequency);
+ if (telemetry_state.telemetry_rate != AltosLib.ao_telemetry_rate_38400)
+ str = str.concat(String.format(" %d bps",
+ AltosLib.ao_telemetry_rate_values[telemetry_state.telemetry_rate]));
+ mTitle.setText(str);
+ } else {
+ mTitle.setText(R.string.title_connected_to);
+ }
+ break;
+ case TelemetryState.CONNECT_CONNECTING:
+ mTitle.setText(R.string.title_connecting);
+ break;
+ case TelemetryState.CONNECT_READY:
+ case TelemetryState.CONNECT_NONE:
+ mTitle.setText(R.string.title_not_connected);
+ break;
+ }
+ }
+
+ void start_timer() {
+ if (timer == null) {
+ timer = new Timer();
+ timer.scheduleAtFixedRate(new TimerTask(){ public void run() {onTimerTick();}}, 1000L, 1000L);
+ }
+ }
+
+ void stop_timer() {
+ if (timer != null) {
+ timer.cancel();
+ timer.purge();
+ timer = null;
+ }
+ }
+
+ boolean registered_units_listener;
+
+ void update_state(TelemetryState telemetry_state) {
+
+ if (!registered_units_listener) {
+ registered_units_listener = true;
+ AltosPreferences.register_units_listener(this);
+ }
+
+ update_title(telemetry_state);
+ update_ui(telemetry_state.state, telemetry_state.location);
+ if (telemetry_state.connect == TelemetryState.CONNECT_CONNECTED)
+ start_timer();
+ else
+ stop_timer();
+ }
+
+ boolean same_string(String a, String b) {
+ if (a == null) {
+ if (b == null)
+ return true;
+ return false;
+ } else {
+ if (b == null)
+ return false;
+ return a.equals(b);
+ }
+ }
+
+ void update_age() {
+ if (saved_state != null)
+ mAgeView.setText(String.format("%d", (System.currentTimeMillis() - saved_state.received_time + 500) / 1000));
+ }
+
+ void update_ui(AltosState state, Location location) {
+
+ Log.d(TAG, "update_ui");
+
+ int prev_state = AltosLib.ao_flight_invalid;
+
+ AltosGreatCircle from_receiver = null;
+
+ if (saved_state != null)
+ prev_state = saved_state.state;
+
+ if (state != null) {
+ Log.d(TAG, String.format("prev state %d new state %d\n", prev_state, state.state));
+ if (state.state == AltosLib.ao_flight_stateless) {
+ boolean prev_locked = false;
+ boolean locked = false;
+
+ if(state.gps != null)
+ locked = state.gps.locked;
+ if (saved_state != null && saved_state.gps != null)
+ prev_locked = saved_state.gps.locked;
+ if (prev_locked != locked) {
+ String currentTab = mTabHost.getCurrentTabTag();
+ if (locked) {
+ if (currentTab.equals("pad")) mTabHost.setCurrentTabByTag("descent");
+ } else {
+ if (currentTab.equals("descent")) mTabHost.setCurrentTabByTag("pad");
+ }
+ }
+ } else {
+ if (prev_state != state.state) {
+ String currentTab = mTabHost.getCurrentTabTag();
+ Log.d(TAG, "switch state");
+ switch (state.state) {
+ case AltosLib.ao_flight_boost:
+ if (currentTab.equals("pad")) mTabHost.setCurrentTabByTag("ascent");
+ break;
+ case AltosLib.ao_flight_drogue:
+ if (currentTab.equals("ascent")) mTabHost.setCurrentTabByTag("descent");
+ break;
+ case AltosLib.ao_flight_landed:
+ if (currentTab.equals("descent")) mTabHost.setCurrentTabByTag("landed");
+ break;
+ case AltosLib.ao_flight_stateless:
+ if (currentTab.equals("pad")) mTabHost.setCurrentTabByTag("descent");
+ break;
+ }
+ }
+ }
+
+ if (location != null && state.gps != null && state.gps.locked) {
+ double altitude = 0;
+ if (location.hasAltitude())
+ altitude = location.getAltitude();
+ from_receiver = new AltosGreatCircle(location.getLatitude(),
+ location.getLongitude(),
+ altitude,
+ state.gps.lat,
+ state.gps.lon,
+ state.gps.alt);
+ }
+
+ if (saved_state == null || !same_string(saved_state.callsign, state.callsign)) {
+ Log.d(TAG, "update callsign");
+ mCallsignView.setText(state.callsign);
+ }
+ if (saved_state == null || state.serial != saved_state.serial) {
+ Log.d(TAG, "update serial");
+ mSerialView.setText(String.format("%d", state.serial));
+ }
+ if (saved_state == null || state.flight != saved_state.flight) {
+ Log.d(TAG, "update flight");
+ if (state.flight == AltosLib.MISSING)
+ mFlightView.setText("");
+ else
+ mFlightView.setText(String.format("%d", state.flight));
+ }
+ if (saved_state == null || state.state != saved_state.state) {
+ Log.d(TAG, "update state");
+ if (state.state == AltosLib.ao_flight_stateless) {
+ mStateLayout.setVisibility(View.GONE);
+ } else {
+ mStateView.setText(state.state_name());
+ mStateLayout.setVisibility(View.VISIBLE);
+ }
+ }
+ if (saved_state == null || state.rssi != saved_state.rssi) {
+ Log.d(TAG, "update rssi");
+ mRSSIView.setText(String.format("%d", state.rssi));
+ }
+ }
+
+ for (AltosDroidTab mTab : mTabs)
+ mTab.update_ui(state, from_receiver, location, mTab == mTabsAdapter.currentItem());
+
+ if (state != null)
+ mAltosVoice.tell(state, from_receiver);
+
+ saved_state = state;
+ }
+
+ private void onTimerTick() {
+ try {
+ mMessenger.send(Message.obtain(null, MSG_UPDATE_AGE));
+ } catch (RemoteException e) {
+ }
}
- String pos(double p, String pos, String neg) {
+ static String pos(double p, String pos, String neg) {
String h = pos;
+ if (p == AltosLib.MISSING)
+ return "";
if (p < 0) {
h = neg;
p = -p;
}
int deg = (int) Math.floor(p);
double min = (p - Math.floor(p)) * 60.0;
- return String.format("%d° %9.6f\" %s", deg, min, h);
+ return String.format("%d°%9.4f\" %s", deg, min, h);
+ }
+
+ static String number(String format, double value) {
+ if (value == AltosLib.MISSING)
+ return "";
+ return String.format(format, value);
+ }
+
+ static String integer(String format, int value) {
+ if (value == AltosLib.MISSING)
+ return "";
+ return String.format(format, value);
}
@Override
super.onCreate(savedInstanceState);
if(D) Log.e(TAG, "+++ ON CREATE +++");
+ // Get local Bluetooth adapter
+ mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+
+ // If the adapter is null, then Bluetooth is not supported
+ if (mBluetoothAdapter == null) {
+ Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
+ finish();
+ }
+
+ fm = getSupportFragmentManager();
+
// Set up the window layout
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
- //setContentView(R.layout.main);
setContentView(R.layout.altosdroid);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);
+ // Create the Tabs and ViewPager
+ mTabHost = (TabHost)findViewById(android.R.id.tabhost);
+ mTabHost.setup();
+
+ mViewPager = (AltosViewPager)findViewById(R.id.pager);
+ mViewPager.setOffscreenPageLimit(4);
+
+ mTabsAdapter = new TabsAdapter(this, mTabHost, mViewPager);
+
+ mTabsAdapter.addTab(mTabHost.newTabSpec("pad").setIndicator("Pad"), TabPad.class, null);
+ mTabsAdapter.addTab(mTabHost.newTabSpec("ascent").setIndicator("Ascent"), TabAscent.class, null);
+ mTabsAdapter.addTab(mTabHost.newTabSpec("descent").setIndicator("Descent"), TabDescent.class, null);
+ mTabsAdapter.addTab(mTabHost.newTabSpec("landed").setIndicator("Landed"), TabLanded.class, null);
+ mTabsAdapter.addTab(mTabHost.newTabSpec("map").setIndicator("Map"), TabMap.class, null);
+
+
+ // Scale the size of the Tab bar for different screen densities
+ // This probably won't be needed when we start supporting ICS+ tabs.
+ DisplayMetrics metrics = new DisplayMetrics();
+ getWindowManager().getDefaultDisplay().getMetrics(metrics);
+ int density = metrics.densityDpi;
+
+ if (density==DisplayMetrics.DENSITY_XHIGH)
+ tabHeight = 65;
+ else if (density==DisplayMetrics.DENSITY_HIGH)
+ tabHeight = 45;
+ else if (density==DisplayMetrics.DENSITY_MEDIUM)
+ tabHeight = 35;
+ else if (density==DisplayMetrics.DENSITY_LOW)
+ tabHeight = 25;
+ else
+ tabHeight = 65;
+
+ for (int i = 0; i < 5; i++)
+ mTabHost.getTabWidget().getChildAt(i).getLayoutParams().height = tabHeight;
+
// Set up the custom title
mTitle = (TextView) findViewById(R.id.title_left_text);
mTitle.setText(R.string.app_name);
mTitle = (TextView) findViewById(R.id.title_right_text);
- // Set up the temporary Text View
- mTextView = (TextView) findViewById(R.id.text);
- mTextView.setMovementMethod(new ScrollingMovementMethod());
- mTextView.setClickable(false);
- mTextView.setLongClickable(false);
+ // Display the Version
+ mVersion = (TextView) findViewById(R.id.version);
+ mVersion.setText("Version: " + BuildInfo.version +
+ " Built: " + BuildInfo.builddate + " " + BuildInfo.buildtime + " " + BuildInfo.buildtz +
+ " (" + BuildInfo.branch + "-" + BuildInfo.commitnum + "-" + BuildInfo.commithash + ")");
mCallsignView = (TextView) findViewById(R.id.callsign_value);
mRSSIView = (TextView) findViewById(R.id.rssi_value);
mSerialView = (TextView) findViewById(R.id.serial_value);
mFlightView = (TextView) findViewById(R.id.flight_value);
+ mStateLayout = (RelativeLayout) findViewById(R.id.state_container);
mStateView = (TextView) findViewById(R.id.state_value);
- mSpeedView = (TextView) findViewById(R.id.speed_value);
- mAccelView = (TextView) findViewById(R.id.accel_value);
- mRangeView = (TextView) findViewById(R.id.range_value);
- mHeightView = (TextView) findViewById(R.id.height_value);
- mElevationView = (TextView) findViewById(R.id.elevation_value);
- mBearingView = (TextView) findViewById(R.id.bearing_value);
- mLatitudeView = (TextView) findViewById(R.id.latitude_value);
- mLongitudeView = (TextView) findViewById(R.id.longitude_value);
-
- // Get local Bluetooth adapter
- mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
-
- // If the adapter is null, then Bluetooth is not supported
- if (mBluetoothAdapter == null) {
- Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
- finish();
- return;
- }
-
- // Enable Text to Speech
- tts = new TextToSpeech(this, new OnInitListener() {
- public void onInit(int status) {
- if (status == TextToSpeech.SUCCESS) tts_enabled = true;
- if (tts_enabled) tts.speak("AltosDroid ready", TextToSpeech.QUEUE_ADD, null );
- }
- });
+ mAgeView = (TextView) findViewById(R.id.age_value);
+ mAltosVoice = new AltosVoice(this);
}
@Override
super.onStart();
if(D) Log.e(TAG, "++ ON START ++");
+ // Start Telemetry Service
+ startService(new Intent(AltosDroid.this, TelemetryService.class));
+
if (!mBluetoothAdapter.isEnabled()) {
Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
- startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
+ startActivityForResult(enableIntent, AltosDroid.REQUEST_ENABLE_BT);
}
- // Start Telemetry Service
- startService(new Intent(AltosDroid.this, TelemetryService.class));
-
doBindService();
+
}
@Override
super.onDestroy();
if(D) Log.e(TAG, "--- ON DESTROY ---");
- if (tts != null) tts.shutdown();
+ if (mAltosVoice != null) mAltosVoice.stop();
+ stop_timer();
}
-
-
-
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if(D) Log.d(TAG, "onActivityResult " + resultCode);
switch (requestCode) {
}
}
- private void connectDevice(Intent data) {
- // Get the device MAC address
- String address = data.getExtras().getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
- // Get the BLuetoothDevice object
- BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
+ private void connectDevice(String address) {
// Attempt to connect to the device
try {
- if (D) Log.d(TAG, "Connecting to " + device.getName());
- mService.send(Message.obtain(null, TelemetryService.MSG_CONNECT, device));
+ if (D) Log.d(TAG, "Connecting to " + address);
+ mService.send(Message.obtain(null, TelemetryService.MSG_CONNECT, address));
} catch (RemoteException e) {
}
}
+ private void connectDevice(Intent data) {
+ // Get the device MAC address
+ String address = data.getExtras().getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
+ connectDevice(address);
+ }
+
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
return true;
}
+ void setFrequency(double freq) {
+ try {
+ mService.send(Message.obtain(null, TelemetryService.MSG_SETFREQUENCY, freq));
+ } catch (RemoteException e) {
+ }
+ }
+
+ void setFrequency(String freq) {
+ try {
+ setFrequency (Double.parseDouble(freq.substring(11, 17)));
+ } catch (NumberFormatException e) {
+ }
+ }
+
+ void setBaud(int baud) {
+ try {
+ mService.send(Message.obtain(null, TelemetryService.MSG_SETBAUD, baud));
+ } catch (RemoteException e) {
+ }
+ }
+
+ void setBaud(String baud) {
+ try {
+ int value = Integer.parseInt(baud);
+ int rate = AltosLib.ao_telemetry_rate_38400;
+ switch (value) {
+ case 2400:
+ rate = AltosLib.ao_telemetry_rate_2400;
+ break;
+ case 9600:
+ rate = AltosLib.ao_telemetry_rate_9600;
+ break;
+ case 38400:
+ rate = AltosLib.ao_telemetry_rate_38400;
+ break;
+ }
+ setBaud(rate);
+ } catch (NumberFormatException e) {
+ }
+ }
+
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Intent serverIntent = null;
serverIntent = new Intent(this, DeviceListActivity.class);
startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE);
return true;
+ case R.id.quit:
+ Log.d(TAG, "R.id.quit");
+ stopService(new Intent(AltosDroid.this, TelemetryService.class));
+ finish();
+ return true;
+ case R.id.select_freq:
+ // Set the TBT radio frequency
+
+ final String[] frequencies = {
+ "Channel 0 (434.550MHz)",
+ "Channel 1 (434.650MHz)",
+ "Channel 2 (434.750MHz)",
+ "Channel 3 (434.850MHz)",
+ "Channel 4 (434.950MHz)",
+ "Channel 5 (435.050MHz)",
+ "Channel 6 (435.150MHz)",
+ "Channel 7 (435.250MHz)",
+ "Channel 8 (435.350MHz)",
+ "Channel 9 (435.450MHz)"
+ };
+
+ AlertDialog.Builder builder_freq = new AlertDialog.Builder(this);
+ builder_freq.setTitle("Pick a frequency");
+ builder_freq.setItems(frequencies,
+ new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog, int item) {
+ setFrequency(frequencies[item]);
+ }
+ });
+ AlertDialog alert_freq = builder_freq.create();
+ alert_freq.show();
+ return true;
+ case R.id.select_rate:
+ // Set the TBT baud rate
+
+ final String[] rates = {
+ "38400",
+ "9600",
+ "2400",
+ };
+
+ AlertDialog.Builder builder_rate = new AlertDialog.Builder(this);
+ builder_rate.setTitle("Pick a baud rate");
+ builder_rate.setItems(rates,
+ new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog, int item) {
+ setBaud(rates[item]);
+ }
+ });
+ AlertDialog alert_rate = builder_rate.create();
+ alert_rate.show();
+ return true;
+ case R.id.change_units:
+ boolean imperial = AltosPreferences.imperial_units();
+ AltosPreferences.set_imperial_units(!imperial);
+ return true;
}
return false;
}