| 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.view; |
| 16 | |
| 17 | import java.awt.BorderLayout; |
| 18 | |
| 19 | import javax.swing.JPanel; |
| 20 | import javax.swing.JScrollPane; |
| 21 | import javax.swing.JViewport; |
| 22 | |
| 23 | public class DrawingAreaPanel extends JPanel implements DrawingAreaHolder |
| 24 | { |
| 25 | // This constructor is used only for the fake empty area view |
| 26 | public DrawingAreaPanel() |
| 27 | { |
| 28 | _area = null; |
| 29 | _scroller = null; |
| 30 | } |
| 31 | |
| 32 | public DrawingAreaPanel(DrawingArea area) |
| 33 | { |
| 34 | super(new BorderLayout()); |
| 35 | _area = area; |
| 36 | _scroller = new JScrollPane(_area); |
| 37 | // Improve scrolling performance |
| 38 | _scroller.getViewport().setScrollMode(JViewport.BACKINGSTORE_SCROLL_MODE); |
| 39 | _scroller.getViewport().setName("drawing-area-viewport"); |
| 40 | add(_scroller, BorderLayout.CENTER); |
| 41 | } |
| 42 | |
| 43 | public DrawingArea getDrawingArea() |
| 44 | { |
| 45 | return _area; |
| 46 | } |
| 47 | |
| 48 | public void attachArea() |
| 49 | { |
| 50 | _scroller.setViewportView(_area); |
| 51 | } |
| 52 | |
| 53 | public void detachArea() |
| 54 | { |
| 55 | _scroller.setViewportView(null); |
| 56 | } |
| 57 | |
| 58 | private final DrawingArea _area; |
| 59 | private final JScrollPane _scroller; |
| 60 | |
| 61 | } |