JProgressRenderer.java

package com.dedupeer.gui.component.renderer;

import java.awt.Color;
import java.awt.Component;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;

import javax.swing.JProgressBar;
import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;

/**
 * @author Paulo Fernando (pf@paulofernando.net.br)
 */
public class JProgressRenderer extends JProgressBar implements TableCellRenderer {

	private static final long serialVersionUID = -4116117091520144073L;
	private Color background;
	private ProgressInfo progressInfo;
	
	/*private Color[][] colors = new Color[][]{
			{new Color(0xa4dcb2), new Color(0x61e868)}, // storing
			{new Color(0xc0cde0), new Color(0x76a1e3)}, // deduplicating
			{new Color(0xe8e6dd), new Color(0xe8c53a)}, // chunking
			{new Color(0xcdc0e0), new Color(0x9f76e3)}, // restoring
			{new Color(0xbabd84), new Color(0xb3bc21)}	// calculating storage economy
	};*/
	
	private Color[] colors = new Color[]{ new Color(0xe8e6dd), new Color(0xe8c53a) };
	
	private Color textColor = new Color(0x333333);
	
	@Override
	public Component getTableCellRendererComponent(JTable table, Object value,
			boolean selected, boolean hasFocus, int row, int column) {
		
		progressInfo = (ProgressInfo) value;
		if(progressInfo != null) {
			this.setValue(progressInfo.getProgress());
		}
		
		if(selected) {
			background = table.getSelectionBackground();
		} else {
			background = table.getBackground();
		}
		invalidate();
		return this;
	}
	
	public void paint(Graphics graphics) {
		super.paint(graphics);
		
		if((this.getValue() == 0) || (this.getValue() == 100)) {
			graphics.setColor(background);
			graphics.fillRect(0, 0, this.getWidth(), this.getHeight());
		} else if(progressInfo != null) {
			Graphics2D g2 = (Graphics2D) graphics;
	        Rectangle2D r = new Rectangle2D.Double(2, 1, (progressInfo.getProgress() * this.getWidth()) / 100, this.getHeight() - 2);
	        GradientPaint gp = new GradientPaint(0, 0, colors[0], 0, this.getHeight(),
	        		colors[1], true);
	        g2.setPaint(gp);
	        g2.fill(r);
		}
				
		if(progressInfo != null) {
			graphics.setColor(textColor);
			graphics.drawString(progressInfo.getTypeString(), 2, ((this.getHeight()>>1) + (graphics.getFontMetrics().getHeight()>>1)));
		}
	}
}