/***********************************************************************************************************************
Copyright (c) 2003, International Barcode Consortium
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this list of
      conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of
      conditions and the following disclaimer in the documentation and/or other materials
      provided with the distribution.
    * Neither the name of the International Barcode Consortium nor the names of any contributors may be used to endorse
      or promote products derived from this software without specific prior written permission.

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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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package net.sourceforge.barbecue;

import net.sourceforge.barbecue.output.Output;
import net.sourceforge.barbecue.output.OutputException;

/**
 * Specific implementation of Module that provides blank space. This is used to 'draw'
 * barcode quiet zones.
 * <p/>Note: You should not instantiate this class directly.
 *
 * @author <a href="mailto:opensource@ianbourke.com">Ian Bourke</a>
 */
public class BlankModule extends Module {

	/**
	 * Constructs a new BlankModule with the specified width.
	 * @param width The width of the module in bar widths.
	 */
	public BlankModule(int width) {
		super(new int[] {width});
	}

	/**
	 * Draws the module to a barcode output.
	 * @param output The output to draw to
	 * @param x The starting X co-ordinate
	 * @param y The starting Y co-ordinate
	 * @param barWidth
	 * @param barHeight
	 * @return The total width drawn
	 */
	protected int draw(Output output, int x, int y, int barWidth, int barHeight) throws OutputException {
		output.toggleDrawingColor();
		int result = super.draw(output, x, y, barWidth, barHeight);
		output.toggleDrawingColor();
		return result;
	}

	/**
	 * Returns the symbol that this module encodes.
	 * @return A blank string
	 */
	public String getSymbol() {
		return "";
	}
}