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package edu.rice.cs.util.swing;

import javax.swing.*;

import java.awt.*;

public class LayeredIcon implements Icon {

private Icon[] _layers;

private int[] _xoffs;

private int[] _yoffs;

private int _w=0;

private int _h=0;

public LayeredIcon(Icon[] layers, int[] x, int[] y) {

_layers = layers;

_xoffs = x;

_yoffs = y;

if (layers.length != x.length || x.length != y.length) {

throw new IllegalArgumentException("Array lengths don't match");

}

_w = 0; _h = 0;

for (int i = 0; i < layers.length; i++) {

if (layers[i] != null) {

_w = Math.max(_w, layers[i].getIconWidth() + x[i]);

_h = Math.max(_h, layers[i].getIconHeight() + x[i]);

}

}

}

public int getIconHeight() { return _h; }

public int getIconWidth() { return _w; }

public void paintIcon(Component c, Graphics g, int x, int y){

for (int i = 0; i < _layers.length; i++) {

Icon ico = _layers[i];

if (ico != null) _layers[i].paintIcon(c,g, x+_xoffs[i], y+_yoffs[i]);

}

}

public Icon[] getLayers() { return _layers; }

public int[] getXOffsets() { return _xoffs; }

public int[] getYOffsets() { return _xoffs; }

}