/*
* 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 approximate calories.
* @author Levente Bagi
*/
public class CaloriesNotifier implements StepListener, SpeakingTimer.Listener {
public interface Listener {
public void valueChanged(float value);
public void passValue();
}
private Listener mListener;
private static double METRIC_RUNNING_FACTOR = 1.02784823;
private static double IMPERIAL_RUNNING_FACTOR = 0.75031498;
private static double METRIC_WALKING_FACTOR = 0.708;
private static double IMPERIAL_WALKING_FACTOR = 0.517;
private double mCalories = 0;
PedometerSettings mSettings;
Utils mUtils;
boolean mIsMetric;
boolean mIsRunning;
float mStepLength;
float mBodyWeight;
public CaloriesNotifier(Listener listener, PedometerSettings settings, Utils utils) {
mListener = listener;
mUtils = utils;
mSettings = settings;
reloadSettings();
}
public void setCalories(float calories) {
mCalories = calories;
notifyListener();
}
public void reloadSettings() {
mIsMetric = mSettings.isMetric();
mIsRunning = mSettings.isRunning();
mStepLength = mSettings.getStepLength();
mBodyWeight = mSettings.getBodyWeight();
notifyListener();
}
public void resetValues() {
mCalories = 0;
}
public void isMetric(boolean isMetric) {
mIsMetric = isMetric;
}
public void setStepLength(float stepLength) {
mStepLength = stepLength;
}
public void onStep() {
if (mIsMetric) {
mCalories +=
(mBodyWeight * (mIsRunning ? METRIC_RUNNING_FACTOR : METRIC_WALKING_FACTOR))
// Distance:
* mStepLength // centimeters
/ 100000.0; // centimeters/kilometer
}
else {
mCalories +=
(mBodyWeight * (mIsRunning ? IMPERIAL_RUNNING_FACTOR : IMPERIAL_WALKING_FACTOR))
// Distance:
* mStepLength // inches
/ 63360.0; // inches/mile
}
notifyListener();
}
private void notifyListener() {
mListener.valueChanged((float)mCalories);
}
public void passValue() {
}
public void speak() {
if (mSettings.shouldTellCalories()) {
if (mCalories > 0) {
mUtils.say("" + (int)mCalories + " calories burned");
}
}
}
}