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 package org.apache.log4j.chainsaw;
18
19 import javax.swing.*;
20 import javax.swing.text.Document;
21 import javax.swing.text.JTextComponent;
22 import javax.swing.text.html.HTMLDocument;
23 import java.awt.*;
24
25 /**
26 * Apply system font and size (normal size + 1) rule if the JEditorPane document contains html.
27 */
28 public class JTextComponentFormatter {
29 public static void applySystemFontAndSize(JTextComponent textComponent) {
30 Document document = textComponent.getDocument();
31 if (document instanceof HTMLDocument) {
32 Font font = UIManager.getFont("Label.font");
33 String bodyRule = "body { font-family: " + font.getFamily() + "; font-size: " + (font.getSize() + 1) + "pt; }";
34 ((HTMLDocument) document).getStyleSheet().addRule(bodyRule);
35 }
36 }
37 }