com.mycompany.istudy.principalservices.GraphicalView.java Source code

Introduction

Here is the source code for com.mycompany.istudy.principalservices.GraphicalView.java

Source

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.mycompany.istudy.principalservices;

/**
 * This class shows a graphical interface to the user.
 * It shows the actual study status of the student for modules (invested hours,
 * hours which should be invested, etc.)
 * @author Cham
 */
import java.awt.Color;
import java.awt.BasicStroke;
import java.util.Map;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.ui.ApplicationFrame;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;

public class GraphicalView extends ApplicationFrame {

    private final JFreeChart xylineChart;

    /**
     * Overwrites the method of createXYLineChart from ChartFactory interface
     * and creates a XYLine Chart.
     * @param applicationTitle
     * @param chartTitle
     * @param investedHoursPerWeek
     * @param hoursToBeInvested 
     */
    public GraphicalView(String applicationTitle, String chartTitle, Map<Double, Double> investedHoursPerWeek,
            Map<Double, Double> hoursToBeInvested) {
        super(applicationTitle);
        xylineChart = ChartFactory.createXYLineChart(chartTitle, "Calender Weeks", "Invested Study-hours",
                createDataset(investedHoursPerWeek, hoursToBeInvested), PlotOrientation.VERTICAL, true, true,
                false);
        ChartPanel chartPanel = new ChartPanel(xylineChart);
        chartPanel.setPreferredSize(new java.awt.Dimension(560, 367));
        final XYPlot plot = xylineChart.getXYPlot();
        XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer();
        renderer.setSeriesPaint(0, Color.BLUE);
        renderer.setSeriesPaint(1, Color.RED);
        renderer.setSeriesStroke(0, new BasicStroke(4.0f));
        plot.setRenderer(renderer);
        setContentPane(chartPanel);
    }

    private XYDataset createDataset(Map<Double, Double> investedHoursPerWeek,
            Map<Double, Double> hoursToBeInvested) {
        final XYSeries moduleToWeek = new XYSeries("Actual Performance");

        investedHoursPerWeek.entrySet().stream().forEach((pair) -> {
            moduleToWeek.add((double) pair.getKey(), (double) pair.getValue());
        });
        final XYSeriesCollection dataset = new XYSeriesCollection();
        dataset.addSeries(moduleToWeek);

        final XYSeries optimalWorkload = new XYSeries("Optimal Performance ");

        hoursToBeInvested.entrySet().stream().forEach((pair) -> {
            optimalWorkload.add((double) pair.getKey(), (double) pair.getValue());
        });
        dataset.addSeries(optimalWorkload);
        return dataset;
    }
}