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DiffBarCellRenderer.java

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package org.netbeans.lib.profiler.ui.components.table;

import org.netbeans.lib.profiler.ui.components.*;
import java.awt.*;
import javax.swing.*;


/** Custom Table cell renderer that paints a bar based on numerical value within min/max bounds.
 *
 * @author Jiri Sedlacek
 */
00052 public class DiffBarCellRenderer extends CustomBarCellRenderer {
    //~ Static fields/initializers -----------------------------------------------------------------------------------------------

    public static final Color BAR_FOREGROUND2_COLOR = new Color(41, 195, 41);

    //~ Constructors -------------------------------------------------------------------------------------------------------------

    public DiffBarCellRenderer(long min, long max) {
        super(min, max);
    }

    //~ Methods ------------------------------------------------------------------------------------------------------------------

    public void paintComponent(Graphics g) {
        g.setColor(getBackground());
        g.fillRect(0, 0, getWidth(), getHeight());

        Insets insets = getInsets();
        int clientWidth = getWidth() - insets.right - insets.left;
        int horizCenter = insets.left + (clientWidth / 2);
        int barExtent = (int) Math.ceil((Math.abs(relValue) * ((double) clientWidth)) / 2d);

        if (relValue > 0) {
            g.setColor(BAR_FOREGROUND_COLOR);
            g.fillRect(horizCenter, insets.top, barExtent, getHeight() - insets.bottom - insets.top);
        } else if (relValue < 0) {
            g.setColor(BAR_FOREGROUND2_COLOR);
            g.fillRect(horizCenter - barExtent, insets.top, barExtent, getHeight() - insets.bottom - insets.top);
        }
    }

    protected double calculateViewValue(long n) {
        long absMax = Math.max(Math.abs(min), max);

        return (double) (n) / (double) (absMax);
    }

    protected double calculateViewValue(double n) {
        long absMax = Math.max(Math.abs(min), max);

        return (double) (n) / (double) (absMax);
    }
}

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