| 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.hivegui.component; |
| 16 | |
| 17 | import java.awt.Color; |
| 18 | |
| 19 | import javax.swing.colorchooser.DefaultColorSelectionModel; |
| 20 | |
| 21 | /** |
| 22 | * Special ColorSelectionModel that supports the alpha channel. |
| 23 | * It is supposed to be used in conjunction with special RGBAChooserPanel |
| 24 | * (instead of swing DefaultRGBChooserPanel). |
| 25 | * |
| 26 | * @author Jean-Francois Poilpret |
| 27 | */ |
| 28 | public class AlphaColorSelectionModel extends DefaultColorSelectionModel |
| 29 | { |
| 30 | /** |
| 31 | * Allows to explicitely set the alpha channel of the color (transparency). |
| 32 | * This is the only way to set the alpha (do not use |
| 33 | * <code>setSelectedColor</code> it will ignore the alpha channel of its |
| 34 | * <code>color</code> argument). |
| 35 | */ |
| 36 | public void setAlpha(int alpha, boolean refresh) |
| 37 | { |
| 38 | _alpha = alpha; |
| 39 | if (refresh) |
| 40 | { |
| 41 | // The following line enforces update of the color in the parent |
| 42 | // class and notification of all listeners. |
| 43 | setSelectedColor(getSelectedColor()); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | @Override public void setSelectedColor(Color color) |
| 48 | { |
| 49 | super.setSelectedColor(new Color( color.getRed(), |
| 50 | color.getGreen(), |
| 51 | color.getBlue(), |
| 52 | _alpha)); |
| 53 | } |
| 54 | |
| 55 | static private final int OPAQUE = 0xFF; |
| 56 | private int _alpha = OPAQUE; |
| 57 | } |