SystemMonitor

Introduction

An image monitor.

Usage

You just have to create a SystemMonitor object :

SystemMonitor cpu = new SystemMonitor(shell, SWT.NONE, SampleIdentifier.CPU_USAGE);

The first argument is the parent widget, the second is the style (SWT.NONE) and the third is an enumeration element : PHYSICAL_MEMORY, HEAP_MEMORY, THREADS, CPU_USAGE.

Making my own sample

The first thing to do is to create a class that will represents a sample. This class implements the interface org.mihalis.opal.systemMonitor.sample :

import java.util.Random;

import org.mihalis.opal.systemMonitor.Sample;

/**
 * A random sample
 */
public class RandomSample implements Sample {

	@Override
	public double getValue() {
		 return new Random().nextInt(100);
	}

	@Override
	public double getMaxValue() {
		return 99d;
	}

}

Then you instantiate your SystemMonitor and customize it :

final SystemMonitor custom = new SystemMonitor(shell, SWT.NONE);
custom.addSample("custom", new RandomSample());
custom.setCaption("custom", "Random value:");
custom.setColor("custom", new RGB(255, 255, 216));
custom.setFormatPattern("custom", "%{value},.0f / %{maxValue},.0f / %{percentValue}.0f%%");
custom.setLayoutData(createLayoutData());

Example

An example called SystemMonitorSnippet.java is located in the directory src/test/java/org/mihalis/opal/systemMonitor.

This example is also available here : https://github.com/lcaron/opal/blob/master/src/test/java/org/mihalis/opal/SystemMonitor/SystemMonitorSnippet.java