CustomSliderUI.java

package org.lysty.ui;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Stroke;
import java.awt.geom.GeneralPath;

import javax.swing.JComponent;
import javax.swing.JSlider;
import javax.swing.SwingConstants;
import javax.swing.plaf.basic.BasicSliderUI;

public class CustomSliderUI extends BasicSliderUI {

	private BasicStroke stroke = new BasicStroke(1f, BasicStroke.CAP_ROUND,
			BasicStroke.JOIN_ROUND, 0f, new float[] { 1f, 2f }, 0f);

	public CustomSliderUI(JSlider b) {
		super(b);
	}

	@Override
	public void paint(Graphics g, JComponent c) {
		Graphics2D g2d = (Graphics2D) g;
		g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
				RenderingHints.VALUE_ANTIALIAS_ON);
		super.paint(g, c);
	}

	@Override
	protected Dimension getThumbSize() {
		return new Dimension(12, 16);
	}

	@Override
	public void paintTrack(Graphics g) {
		Graphics2D g2d = (Graphics2D) g;
		Stroke old = g2d.getStroke();
		g2d.setStroke(stroke);
		g2d.setPaint(Color.BLACK);
		if (slider.getOrientation() == SwingConstants.HORIZONTAL) {
			g2d.draw3DRect(trackRect.x, trackRect.y, trackRect.width, trackRect.height,true);
			//g2d.drawLine(trackRect.x, trackRect.y + trackRect.height / 2,
			//		trackRect.x + trackRect.width, trackRect.y
			//				+ trackRect.height / 2);
		}

		/*
		 * else { g2d.drawLine(trackRect.x + trackRect.width / 2, trackRect.y,
		 * trackRect.x + trackRect.width / 2, trackRect.y + trackRect.height); }
		 */
		g2d.setStroke(old);
	}

	@Override
	public void paintThumb(Graphics g) {
		Graphics2D g2d = (Graphics2D) g;
		int x1 = thumbRect.x + 2;
		int x2 = thumbRect.x + thumbRect.width - 2;
		int width = thumbRect.width - 4;
		int topY = thumbRect.y + thumbRect.height / 2 - thumbRect.width / 3;
		GeneralPath shape = new GeneralPath(GeneralPath.WIND_EVEN_ODD);
		shape.moveTo(x1, topY);
		shape.lineTo(x2, topY);
		shape.lineTo((x1 + x2) / 2, topY + width);
		shape.closePath();
		g2d.setPaint(new Color(81, 83, 186));
		g2d.fill(shape);
		Stroke old = g2d.getStroke();
		g2d.setStroke(new BasicStroke(2f));
		g2d.setPaint(new Color(131, 127, 211));
		g2d.draw(shape);
		g2d.setStroke(old);
	}

}