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      1 /*
      2  *  Licensed to the Apache Software Foundation (ASF) under one or more
      3  *  contributor license agreements.  See the NOTICE file distributed with
      4  *  this work for additional information regarding copyright ownership.
      5  *  The ASF licenses this file to You under the Apache License, Version 2.0
      6  *  (the "License"); you may not use this file except in compliance with
      7  *  the License.  You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  */
     17 /**
     18  * @author Alexey A. Petrenko, Ilya S. Okomin
     19  * @version $Revision$
     20  */
     21 package org.apache.harmony.awt.gl;
     22 
     23 import java.awt.Font;
     24 import java.awt.FontMetrics;
     25 import java.awt.peer.FontPeer;
     26 
     27 import org.apache.harmony.awt.gl.font.FontMetricsImpl;
     28 import org.apache.harmony.awt.wtk.GraphicsFactory;
     29 
     30 /**
     31  * Common GraphicsFactory implementation
     32  *
     33  */
     34 public abstract class CommonGraphics2DFactory implements GraphicsFactory {
     35 
     36     // static instance of CommonGraphics2DFactory
     37     public static CommonGraphics2DFactory inst;
     38 
     39     /**
     40      * Returns FontMetrics object that keeps metrics of the specified font.
     41      *
     42      * @param font specified Font
     43      * @return FontMetrics object corresponding to the specified Font object
     44      */
     45     public FontMetrics getFontMetrics(Font font) {
     46         FontMetrics fm;
     47         for (FontMetrics element : cacheFM) {
     48             fm = element;
     49             if (fm == null){
     50                 break;
     51             }
     52 
     53             if (fm.getFont().equals(font)){
     54                 return fm;
     55             }
     56         }
     57         fm = new FontMetricsImpl(font);
     58 
     59         System.arraycopy(cacheFM, 0, cacheFM, 1, cacheFM.length -1);
     60         cacheFM[0] = fm;
     61 
     62         return fm;
     63     }
     64     // Font methods
     65 
     66     public FontPeer getFontPeer(Font font) {
     67         return getFontManager().getFontPeer(font.getName(), font.getStyle(), font.getSize());
     68     }
     69 
     70     /**
     71      * Embeds font from gile with specified path into the system.
     72      *
     73      * @param fontFilePath path to the font file
     74      * @return Font object that was created from the file.
     75      */
     76     public abstract Font embedFont(String fontFilePath);
     77 
     78 }