J2ME Gradient Box

import javax.microedition.lcdui.Graphics;

public class Gradient {

public static final int VERTICAL = 0;
public static final int HORIZONTAL = 1;

public static void gradientBox(Graphics g, int color1, int color2, int left, int top, int width, int height, int orientation)
{
int max = orientation == VERTICAL ? height : width;

for(int i = 0; i < max; i++)
{
int color = midColor(color1, color2, max * (max - 1 - i) / (max - 1), max);

g.setColor(color);

if(orientation == VERTICAL)
g.drawLine(left, top + i, left + width - 1, top + i);
else
g.drawLine(left + i, top, left + i, top + height - 1);
}
}

static int midColor(int color1, int color2, int prop, int max)
{
int red =
(((color1 >> 16) & 0xff) * prop +
((color2 >> 16) & 0xff) * (max - prop)) / max;

int green =
(((color1 >> 8) & 0xff) * prop +
((color2 >> 8) & 0xff) * (max - prop)) / max;

int blue =
(((color1 >> 0) & 0xff) * prop +
((color2 >> 0) & 0xff) * (max - prop)) / max;

int color = red << 16 | green << 8 | blue;

return color;
}
}