JSci.swing.JRoundDial Maven / Gradle / Ivy

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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software. It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ... Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).

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package JSci.swing;

import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.text.*;
import java.util.*;

/** A round dial, where the pointer can rotate many turns; the turns are indicated 
    by digits inside the dial. JPointer s must be added. */
public class JRoundDial extends JPanel {

    private double oneTurn = 360;
    private double zero = 0.0;
    private double minorTic = 10;
    private double majorTic = 30;
    private boolean setPaintMinorTicks = true;
    private boolean setPaintMajorTicks = true;
    private boolean setPaintLabels = true;
    private JPointer setPaintTurns = null;
    private double radius = 70;
    private ArrayList pointers = new ArrayList();
    private ChangeListener changeListener = new ChangeListener() {	
	    public void stateChanged(ChangeEvent event) {	
		repaint();
	    }
	};

    /** constructs a dial with no pointers 
     * @param o the value that corresponds to one turn 
     *          (e.g. 360 for measures in degrees); negative values for 
     *          counter-clockwise dial
     */
    public JRoundDial(double o) {
	oneTurn = o;
	setSize((int)(2*radius),(int)(2*radius));
	addMouseListener(new TheMouseListener());
	addMouseMotionListener(new TheMouseMotionListener());
    }

    /** define the position at which the zero of the dial will be placed
     * @param z the angle (from the top, clockwise, in rads) where the zero of
     *          the dial will be placed
     */
    public void setZero(double z) {
	zero = z;
    }

    /** as described in java.awt.Component */
    public void setSize(int w,int h) {
	super.setSize(w,h);
	radius = (w=0;j--)
		if (((JPointer)pointers.get(j)).contains(e.getPoint())) {
		    dragged=(JPointer)pointers.get(j);
		    dragDelta=2.0*Math.PI*dragged.getValue()/oneTurn-theta(e);
		    dragged.setAdjusting(true);
		    break;
		}
	}
	public void mouseReleased(MouseEvent e) {
	    if (dragged!=null) dragged.setAdjusting(false);
	    dragged = null;
	    boolean inside = false;
	    for (int j=0;jfrom+Math.abs(oneTurn/2)) to-=Math.abs(oneTurn);
		dragged.setValue(to);
		repaint();
	    }
	}
    }



    // Main

    public static void main(String [] args) {
	JFrame frm = new JFrame();
	frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	JRoundDial d = new JRoundDial(360.0);
	d.setZero(Math.PI/6.0);
	frm.getContentPane().add(d);
	d.setSize(260,260);
	frm.pack();
	frm.show();
	try { Thread.sleep(3000); } catch (InterruptedException e) {}
	JPointer p = new JPointer(JPointer.POINTER_SIMPLE_QUADRANGLE);
	p.setColor(Color.MAGENTA);
	p.setValue(20.0);
	d.addJPointer(p);
	try { Thread.sleep(3000); } catch (InterruptedException e) {}
	JPointer p1 = new JPointer(JPointer.POINTER_SIMPLE_STOP);
	p1.setColor(Color.CYAN);
	p1.setValue(130.0);
	d.addJPointer(p1);
		
	d.setPaintTurns(p1);d.repaint();

	p1.addChangeListener(new ChangeListener() {
		public void stateChanged(ChangeEvent e) {	
		    double v=((JPointer)e.getSource()).getValue();
		    System.out.println("State changed: "+v);
		}
	    });

	//try { Thread.sleep(3000); } catch (InterruptedException e) {}
	//p.setValue(p.getValue()+10.0);
	//try { Thread.sleep(3000); } catch (InterruptedException e) {}
	//p.setValue(p.getValue()+10.0);
	//try { Thread.sleep(3000); } catch (InterruptedException e) {}
	//p.setValue(p.getValue()+10.0);
	//try { Thread.sleep(3000); } catch (InterruptedException e) {}
	//p.setValue(p.getValue()+10.0);

	//try { Thread.sleep(3000); } catch (InterruptedException e) {}
	//d.removeJPointer(p);
	//try { Thread.sleep(3000); } catch (InterruptedException e) {}
	//d.removeJPointer(p1);
	//try { Thread.sleep(3000); } catch (InterruptedException e) {}
    }


	
}