BN089-BS开发框架MVC4版/source20131023/Zephyr.Net/Zephyr.Utils/Document/Excel/NPOI/HSSF/UserModel/StaticFontMetrics.cs

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/* ====================================================================
   Licensed to the Apache Software Foundation (ASF) Under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for Additional information regarding copyright ownership.
   The ASF licenses this file to You Under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed Under the License is distributed on an "AS Is" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations Under the License.
==================================================================== */

namespace Zephyr.Utils.NPOI.HSSF.UserModel
{
    using System;
    using System.Collections;
    using System.IO;
    using System.Drawing;
    using System.Configuration;
    using Zephyr.Utils.NPOI.Util.Collections;

    /**
     * Allows the user to lookup the font metrics for a particular font without
     * actually having the font on the system.  The font details are Loaded
     * as a resource from the POI jar file (or classpath) and should be contained
     * in path "/font_metrics.properties".  The font widths are for a 10 point
     * version of the font.  Use a multiplier for other sizes.
     *
     * @author Glen Stampoultzis (glens at apache.org)
     */
    class StaticFontMetrics
    {
        /** The font metrics property file we're using */
        private static Properties fontMetricsProps;
        /** Our cache of font details we've alReady looked up */
        private static Hashtable fontDetailsMap = new Hashtable();

        /**
         * Retrieves the fake font details for a given font.
         * @param font  the font to lookup.
         * @return  the fake font.
         */
        public static FontDetails GetFontDetails(Font font)
        {
            // If we haven't alReady identified out font metrics file,
            //  figure out which one to use and Load it
            if (fontMetricsProps == null)
            {
                Stream metricsIn = null;
                try
                {
                    fontMetricsProps = new Properties();

                    // Check to see if the font metric file was specified
                    //  as a system property