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annotate dwtx/draw2d/UpdateListener.d @ 98:95307ad235d9

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Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.draw2d.UpdateListener;
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14
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15 import dwt.dwthelper.utils;
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16 import dwtx.dwtxhelper.Collection;
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17
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18 import dwtx.draw2d.geometry.Rectangle;
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19
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20 /**
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21 * An interface used to notify listeners that the listened to object is updating.
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22 */
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23 public interface UpdateListener {
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24
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25 /**
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26 * Notifies the listener that the listened to object is painting. The damage rectangle
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27 * may be null or empty. This indicates the dirty regions were clipped or not visible.
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28 * But for objects such as the {@link dwtx.draw2d.parts.Thumbnail}, notification
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29 * still needs to occur. The map of dirty regions is passed to allow the listener to
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30 * determine if it needs to update, for instance when a particular figure is painting.
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31 *
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32 * @param damage The area being painted
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33 * @param dirtyRegions a Map of figures to their dirty regions
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34 */
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35 void notifyPainting(Rectangle damage, Map dirtyRegions);
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36
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37 /**
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38 * Notifies the listener that the listened to object is validating.
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39 */
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40 void notifyValidating();
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41
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42 }