dialdemo5.java

java图形利器

/* --------------
 * DialDemo5.java
 * --------------
 * (C) Copyright 2006, by Object Refinery Limited.
 */

package org.jfree.experimental.chart.demo;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.data.general.DefaultValueDataset;
import org.jfree.experimental.chart.plot.dial.DialBackground;
import org.jfree.experimental.chart.plot.dial.DialCap;
import org.jfree.experimental.chart.plot.dial.DialPlot;
import org.jfree.experimental.chart.plot.dial.DialPointer;
import org.jfree.experimental.chart.plot.dial.SimpleDialFrame;
import org.jfree.experimental.chart.plot.dial.StandardDialScale;
import org.jfree.ui.GradientPaintTransformType;
import org.jfree.ui.StandardGradientPaintTransformer;

/**
 * A sample application showing the use of a {@link DialPlot}.
 */
public class DialDemo5 extends JFrame implements ChangeListener {
    
    /** The first dataset. */
    DefaultValueDataset hoursDataset;
    
    /** The second dataset. */
    DefaultValueDataset dataset2;
    
    /** A slider to update the first dataset value. */
    JSlider slider1;
    
    /** A slider to update the second dataset value. */
    JSlider slider2;
    
    /** 
     * Creates a new instance.
     *
     * @param title  the frame title.
     */
    public DialDemo5(String title) {
        super(title);
        
        this.hoursDataset = new DefaultValueDataset(6.0);
        this.dataset2 = new DefaultValueDataset(15.0);
        
        // get data for diagrams
        DialPlot plot = new DialPlot();
        plot.setView(0.0, 0.0, 1.0, 1.0);
        plot.setDataset(0, this.hoursDataset);
        plot.setDataset(1, this.dataset2);
        SimpleDialFrame dialFrame = new SimpleDialFrame();
        dialFrame.setBackgroundPaint(Color.lightGray);
        dialFrame.setForegroundPaint(Color.darkGray);
        plot.setDialFrame(dialFrame);
        
        DialBackground db = new DialBackground(Color.white);
        db.setGradientPaintTransformer(new StandardGradientPaintTransformer(
                GradientPaintTransformType.VERTICAL));
        plot.setBackground(db);
        
        StandardDialScale hourScale = new StandardDialScale(0, 12, 90, -360);
        hourScale.setFirstTickLabelVisible(false);
        hourScale.setMajorTickIncrement(1.0);
        hourScale.setTickRadius(0.88);
        hourScale.setTickLabelOffset(0.15);
        hourScale.setTickLabelFont(new Font("Dialog", Font.PLAIN, 14));
        plot.addScale(0, hourScale);

        StandardDialScale scale2 = new StandardDialScale(0, 60, 90, -360);
        scale2.setVisible(false);
        scale2.setMajorTickIncrement(5.0);
        scale2.setTickRadius(0.68);
        scale2.setTickLabelOffset(0.15);
        scale2.setTickLabelFont(new Font("Dialog", Font.PLAIN, 14));
        
        plot.addScale(1, scale2);
        
        DialPointer needle2 = new DialPointer.Pointer(0);
        needle2.setRadius(0.55);
        plot.addLayer(needle2);
        
        plot.mapDatasetToScale(1, 1);

        DialPointer needle = new DialPointer.Pointer(1);
        plot.addLayer(needle);
        
        DialCap cap = new DialCap();
        cap.setRadius(0.10);
        plot.setCap(cap);
        
        JFreeChart chart1 = new JFreeChart(plot);
        chart1.setTitle("Dial Demo 5");
        ChartPanel cp1 = new ChartPanel(chart1);
        cp1.setPreferredSize(new Dimension(400, 400));
        
        JPanel sliderPanel = new JPanel(new GridLayout(2, 2));
        sliderPanel.add(new JLabel("Hours:"));
        sliderPanel.add(new JLabel("Minutes:"));
        this.slider1 = new JSlider(0, 12);
        this.slider1.setMajorTickSpacing(2);
        this.slider1.setPaintTicks(true);
        this.slider1.setPaintLabels(true);
        this.slider1.addChangeListener(this);
        sliderPanel.add(this.slider1);
        sliderPanel.add(this.slider1);
        this.slider2 = new JSlider(0, 60);
        this.slider2.setValue(15);
        this.slider2.setMajorTickSpacing(10);
        this.slider2.setPaintTicks(true);
        this.slider2.setPaintLabels(true);
        this.slider2.addChangeListener(this);
        sliderPanel.add(this.slider2);
        JPanel content = new JPanel(new BorderLayout());
        content.add(cp1);
        content.add(sliderPanel, BorderLayout.SOUTH);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setContentPane(content);
    }
    
    /**
     * Handle a change in the slider by updating the dataset value.  This
     * automatically triggers a chart repaint.
     * 
     * @param e  the event.
     */
    public void stateChanged(ChangeEvent e) {
        this.hoursDataset.setValue(new Integer(this.slider1.getValue()));
        this.dataset2.setValue(new Integer(this.slider2.getValue()));
    }

    /**
     * Starting point for the demo application.
     * 
     * @param args  ignored.
     */
    public static void main(String[] args) {
        DialDemo5 app = new DialDemo5("JFreeChart - Dial Demo 5");
        app.pack();
        app.setVisible(true);
    }

}