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package cgeo.geocaching;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorManager;
import android.hardware.SensorEventListener;
import android.os.Build;
import android.util.Log;
import android.view.Display;
import android.view.Surface;
public class cgDirection {
private Resources res = null;
private cgDirection dir = null;
private cgeoapplication app = null;
private Context context = null;
private cgWarning warning = null;
private SensorManager sensorManager = null;
private cgeoSensorListener sensorListener = null;
private cgUpdateDir dirUpdate = null;
private cg8wrap cg8 = null;
public Double directionNow = null;
public cgDirection(cgeoapplication appIn, Context contextIn, cgUpdateDir dirUpdateIn, cgWarning warningIn) {
app = appIn;
context = contextIn;
dirUpdate = dirUpdateIn;
warning = warningIn;
res = context.getResources();
try {
final int sdk = new Integer(Build.VERSION.SDK).intValue();
if (sdk >= 8) cg8 = new cg8wrap((Activity)context);
} catch (Exception e) {
// nothing
}
sensorListener = new cgeoSensorListener();
}
public void initDir() {
dir = this;
if (sensorManager == null) {
sensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
}
sensorManager.registerListener(sensorListener, sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION), SensorManager.SENSOR_DELAY_NORMAL);
}
public void closeDir() {
if (sensorManager != null && sensorListener != null) {
sensorManager.unregisterListener(sensorListener);
}
}
public void replaceUpdate(cgUpdateDir dirUpdateIn) {
dirUpdate = dirUpdateIn;
if (dirUpdate != null && directionNow != null) dirUpdate.updateDir(dir);
}
private class cgeoSensorListener implements SensorEventListener {
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
/* There is a bug in Android, which appearently causes this method to be called every
* time the sensor _value_ changed, even if the _accuracy_ did not change. So logging
* this event leads to the log being flooded with multiple entries _per second_,
* which I experienced when running cgeo in a building (with GPS and network being
* unreliable).
*
* See for example https://code.google.com/p/android/issues/detail?id=14792
*/
//Log.i(cgSettings.tag, "Compass' accuracy is low (" + accuracy + ")");
}
@Override
public void onSensorChanged(SensorEvent event) {
Double directionNowPre = new Double(event.values[0]);
if (cg8 != null) {
final int rotation = cg8.getRotation();
if (rotation == Surface.ROTATION_90) directionNowPre = directionNowPre + 90;
else if (rotation == Surface.ROTATION_180) directionNowPre = directionNowPre + 180;
else if (rotation == Surface.ROTATION_270) directionNowPre = directionNowPre + 270;
} else {
final Display display = ((Activity)context).getWindowManager().getDefaultDisplay();
final int rotation = display.getOrientation();
if (rotation == Configuration.ORIENTATION_LANDSCAPE) directionNowPre = directionNowPre + 90;
}
directionNow = directionNowPre;
if (dirUpdate != null && directionNow != null) dirUpdate.updateDir(dir);
}
}
}
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