/*
* Pedometer - Android App
* Copyright (C) 2009 Levente Bagi
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package name.bagi.levente.pedometer;
/**
* Calculates and displays the distance walked.
* @author Levente Bagi
*/
public class DistanceNotifier implements StepListener, SpeakingTimer.Listener {
public interface Listener {
public void valueChanged(float value);
public void passValue();
}
private Listener mListener;
float mDistance = 0;
PedometerSettings mSettings;
Utils mUtils;
boolean mIsMetric;
float mStepLength;
public DistanceNotifier(Listener listener, PedometerSettings settings, Utils utils) {
mListener = listener;
mUtils = utils;
mSettings = settings;
reloadSettings();
}
public void setDistance(float distance) {
mDistance = distance;
notifyListener();
}
public void reloadSettings() {
mIsMetric = mSettings.isMetric();
mStepLength = mSettings.getStepLength();
notifyListener();
}
public void onStep() {
if (mIsMetric) {
mDistance += (float)(// kilometers
mStepLength // centimeters
/ 100000.0); // centimeters/kilometer
}
else {
mDistance += (float)(// miles
mStepLength // inches
/ 63360.0); // inches/mile
}
notifyListener();
}
private void notifyListener() {
mListener.valueChanged(mDistance);
}
public void passValue() {
// Callback of StepListener - Not implemented
}
public void speak() {
if (mSettings.shouldTellDistance()) {
if (mDistance >= .001f) {
mUtils.say(("" + (mDistance + 0.000001f)).substring(0, 4) + (mIsMetric ? " kilometers" : " miles"));
// TODO: format numbers (no "." at the end)
}
}
}
}