| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hiveboard.drawing; |
| 16 | |
| 17 | import java.awt.Graphics; |
| 18 | |
| 19 | import javax.swing.JTextArea; |
| 20 | |
| 21 | public class TextPaintingComponent extends JTextArea |
| 22 | { |
| 23 | @Override protected void paintComponent(Graphics g) |
| 24 | { |
| 25 | // Need to force super.paintComponent on a fake graphics since it has |
| 26 | // important side effects that are required to avoid visual artifacts |
| 27 | Graphics dummy = g.create(0, 0, 0, 0); |
| 28 | super.paintComponent(dummy); |
| 29 | dummy.dispose(); |
| 30 | |
| 31 | TextAreaInfo info = new TextAreaInfo(this); |
| 32 | int y = getFontMetrics(getFont()).getAscent(); |
| 33 | int height = info.getLineHeight(); |
| 34 | for (String line: info.getLines()) |
| 35 | { |
| 36 | g.drawString(line, 0, y); |
| 37 | y += height; |
| 38 | } |
| 39 | } |
| 40 | } |