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jtstand-common is a library derived from jcommon, used by jtstand-chart, which is derived from jfreechart

There is a newer version: 1.5.9

/*
 * Copyright (c) 2009 Albert Kurucz. 
 *
 * This file, TextMeasurer.java is part of JTStand.
 *
 * JTStand is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JTStand is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with GTStand.  If not, see .
 */

package org.jfree.text;

/**
 * An object that can measure text.
 *
 * @author David Gilbert
 */
public interface TextMeasurer {

    /**
     * Calculates the width of a String in the current 
     * Graphics context.
     *
     * @param text  the text.
     * @param start  the start position of the substring to be measured.
     * @param end  the position of the last character to be measured.
     *
     * @return The width of the string in Java2D units.
     */
    public float getStringWidth(String text, int start, int end);
    
}