/*
* Copyright (c) 2013, grossmann
* All rights reserved.
*
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* modification, are permitted provided that the following conditions are met:
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* notice, this list of conditions and the following disclaimer.
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* notice, this list of conditions and the following disclaimer in the
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* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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package org.jowidgets.examples.common.demo;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import org.jowidgets.api.model.levelmeter.IMutableLevelMeterModel;
import org.jowidgets.api.model.levelmeter.MutableLevelMeterModel;
import org.jowidgets.api.threads.IUiThreadAccess;
import org.jowidgets.api.toolkit.Toolkit;
import org.jowidgets.common.widgets.layout.MigLayoutDescriptor;
import org.jowidgets.tools.widgets.base.Frame;
import org.jowidgets.tools.widgets.blueprint.BPF;
import org.jowidgets.util.concurrent.DaemonThreadFactory;
public class DemoLevelMeterFrame extends Frame {
private static final int NUMBER_OF_BARS = 10;
public DemoLevelMeterFrame() {
super("Level meter demo");
final String migLayoutColumnDescriptor = getColumnDescriptor();
setLayout(new MigLayoutDescriptor(migLayoutColumnDescriptor, "[grow, 0::]"));
final IMutableLevelMeterModel[] models = new IMutableLevelMeterModel[NUMBER_OF_BARS];
for (int i = 0; i < NUMBER_OF_BARS; i++) {
models[i] = MutableLevelMeterModel.create();
add(BPF.levelMeter(models[i]).setLetteringVisible(true), "growx, w 70!, growy, h 0::");
}
final ScheduledExecutorService threadPool = Executors.newScheduledThreadPool(1, new DaemonThreadFactory());
final IUiThreadAccess uiThreadAccess = Toolkit.getUiThreadAccess();
final Runnable modelChangeRunnable = new Runnable() {
@Override
public void run() {
uiThreadAccess.invokeLater(new Runnable() {
@Override
public void run() {
for (int i = 0; i < NUMBER_OF_BARS; i++) {
final double oldLevel = models[i].getLevel();
if (oldLevel == 0) {
models[i].setLevel(Math.random());
}
else {
final double variance = Math.random() / 10;
double newLevel = oldLevel;
double plusMinus = Math.random();
if (oldLevel > 0.89) {
plusMinus = 0.0;
}
if (oldLevel < 0.11) {
plusMinus = 1.0;
}
if (plusMinus < 0.5) {
newLevel = newLevel - variance;
}
else {
newLevel = newLevel + variance;
}
models[i].setLevel(newLevel);
}
}
}
});
}
};
threadPool.scheduleWithFixedDelay(modelChangeRunnable, 0, 100, TimeUnit.MILLISECONDS);
}
private String getColumnDescriptor() {
final StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < NUMBER_OF_BARS; i++) {
stringBuilder.append("[70!]");
}
return stringBuilder.toString();
}
}