package jas.util.border;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Insets;
import javax.swing.border.AbstractBorder;
/**
* Draws a drop shadow border. Designed to be used as part of
* a compound border in combination with a line border.
*/
public class ShadowBorder extends AbstractBorder
{
public final int NORTHEAST = 1;
public final int NORTHWEST = 2;
public final int SOUTHEAST = 3;
public final int SOUTHWEST = 4;
/**
* Creates a ShadowBorder with default properties
*/
public ShadowBorder()
{
this(null,0,5);
}
/**
* Creates a ShadowBorder
* @param c The color for the shadow. If <code>null</code> the border will be drawn using a darker version of the components background color.
* @param orientation One of NORTHEAST, NORTHWEST, SOUTHEAST, SOUTHWEST
* @param size The size of the shadow in pixels
*/
public ShadowBorder(Color c,int orientation, int size)
{
this.color = c;
this.orientation = orientation;
this.size = size;
}
public static ShadowBorder createShadowBorder()
{
return defaultInstance;
}
public void paintBorder(Component comp, Graphics g, int x, int y, int width, int height)
{
g.setColor(color == null ? comp.getBackground().darker() : color);
switch (orientation)
{
case NORTHWEST:
g.fillRect(x,y,width-size,size); // horiz
g.fillRect(x,y,size,height-size); // vert
case NORTHEAST:
g.fillRect(x+size,y,width-size,size); // horiz
g.fillRect(x+width-size,y,size,height-size); // vert
case SOUTHWEST:
g.fillRect(x,y+height-size,width-size,size); // horiz
g.fillRect(x,y+size,size,height-size); // vert
case SOUTHEAST:
default:
g.fillRect(x+size,y+height-size,width-size,size); // horiz
g.fillRect(x+width-size,y+size,size,height-size); // vert
}
}
public Insets getBorderInsets(Component c)
{
return getBorderInsets(c,new Insets(0,0,0,0));
}
public Insets getBorderInsets(Component c, Insets i)
{
switch (orientation)
{
case NORTHWEST:
i.left=size;
i.right=0;
i.top=size;
i.bottom=0;
break;
case NORTHEAST:
i.left=0;
i.right=size;
i.top=size;
i.bottom=0;
break;
case SOUTHWEST:
i.left=size;
i.right=0;
i.top=0;
i.bottom=size;
break;
case SOUTHEAST:
default:
i.left=0;
i.right=size;
i.top=0;
i.bottom=size;
}
return i;
}
private int size;
private Color color;
private int orientation;
private static ShadowBorder defaultInstance = new ShadowBorder();
}