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comparison dwt/dnd/ImageTransfer.d @ 259:c0d810de7093

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Update SWT 3.4M7 to 3.4
author Frank Benoit <benoit@tionex.de>
date Sun, 29 Jun 2008 14:33:38 +0200
parents ce446666f5a2
children
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257:cc1d3de0e80b 259:c0d810de7093
1 /******************************************************************************* 1 /*******************************************************************************
2 * Copyright (c) 2000, 2004 IBM Corporation and others. 2 * Copyright (c) 2000, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials 3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0 4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at 5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html 6 * http://www.eclipse.org/legal/epl-v10.html
7 * 7 *
22 22
23 import dwt.dwthelper.utils; 23 import dwt.dwthelper.utils;
24 24
25 /** 25 /**
26 * The class <code>ImageTransfer</code> provides a platform specific mechanism 26 * The class <code>ImageTransfer</code> provides a platform specific mechanism
27 * for converting a Image represented as a java <code>ImageData</code> to a 27 * for converting an Image represented as a java <code>ImageData</code> to a
28 * platform specific representation of the data and vice versa. 28 * platform specific representation of the data and vice versa.
29 * See <code>Transfer</code> for additional information.
30 * 29 *
31 * <p>An example of a java <code>ImageData</code> is shown 30 * <p>An example of a java <code>ImageData</code> is shown below:</p>
32 * below:</p>
33 * 31 *
34 * <code><pre> 32 * <code><pre>
35 * Image image = new Image("C:\temp\img1.gif"); 33 * Image image = new Image(display, "C:\temp\img1.gif");
36 * ImageData imgData = image.getImageData(); 34 * ImageData imgData = image.getImageData();
37 * </code></pre> 35 * </code></pre>
36 *
37 * @see Transfer
38 *
39 * @since 3.4
38 */ 40 */
39 public class ImageTransfer : ByteArrayTransfer { 41 public class ImageTransfer : ByteArrayTransfer {
40 42
41 private static ImageTransfer _instance; 43 private static ImageTransfer _instance;
42 44
91 } 93 }
92 94
93 /** 95 /**
94 * This implementation of <code>javaToNative</code> converts an ImageData object represented 96 * This implementation of <code>javaToNative</code> converts an ImageData object represented
95 * by java <code>ImageData</code> to a platform specific representation. 97 * by java <code>ImageData</code> to a platform specific representation.
96 * For additional information see <code>Transfer#javaToNative</code>.
97 * 98 *
98 * @param object a java <code>ImageData</code> containing the ImageData to be 99 * @param object a java <code>ImageData</code> containing the ImageData to be converted
99 * converted 100 * @param transferData an empty <code>TransferData</code> object that will
100 * @param transferData an empty <code>TransferData</code> object; this 101 * be filled in on return with the platform specific format of the data
101 * object will be filled in on return with the platform specific format of the data 102 *
103 * @see Transfer#nativeToJava
102 */ 104 */
103 public void javaToNative(Object object, TransferData transferData) { 105 public void javaToNative(Object object, TransferData transferData) {
104 if (!checkImage(object) || !isSupportedType(transferData)) { 106 if (!checkImage(object) || !isSupportedType(transferData)) {
105 DND.error(DND.ERROR_INVALID_DATA); 107 DND.error(DND.ERROR_INVALID_DATA);
106 } 108 }
142 transferData.format = 32; 144 transferData.format = 32;
143 } 145 }
144 146
145 /** 147 /**
146 * This implementation of <code>nativeToJava</code> converts a platform specific 148 * This implementation of <code>nativeToJava</code> converts a platform specific
147 * representation of an <code>ImageData</code> to java. 149 * representation of an image to java <code>ImageData</code>.
148 * For additional information see <code>Transfer#nativeToJava</code>. 150 *
149 * 151 * @param transferData the platform specific representation of the data to be converted
150 * @param transferData the platform specific representation of the data to be 152 * @return a java <code>ImageData</code> of the image if the conversion was successful;
151 * been converted 153 * otherwise null
152 * @return a java <code>ImageData</code> the imageData of the image if 154 *
153 * conversion was successful; otherwise null 155 * @see Transfer#javaToNative
154 */ 156 */
155 public Object nativeToJava(TransferData transferData) { 157 public Object nativeToJava(TransferData transferData) {
156 ImageData imgData = null; 158 ImageData imgData = null;
157 if (transferData.length > 0) 159 if (transferData.length > 0)
158 { 160 {