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comparison dwt/dnd/ImageTransfer.d @ 106:ed7dd292bfb3

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Ported dwt.dnd.ImageTransfer
author Jacob Carlborg <doob@me.com>
date Wed, 31 Dec 2008 14:43:40 +0100
parents d8635bb48c7c
children
comparison
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105:6a1ed74f02e8 106:ed7dd292bfb3
6 * http://www.eclipse.org/legal/epl-v10.html 6 * http://www.eclipse.org/legal/epl-v10.html
7 * 7 *
8 * Contributors: 8 * Contributors:
9 * IBM Corporation - initial API and implementation 9 * IBM Corporation - initial API and implementation
10 * Outhink - support for typeFileURL 10 * Outhink - support for typeFileURL
11 *
12 * Port to the D programming language:
13 * Jacob Carlborg <doob@me.com>
11 *******************************************************************************/ 14 *******************************************************************************/
12 module dwt.dnd.ImageTransfer; 15 module dwt.dnd.ImageTransfer;
13 16
14 import dwt.dwthelper.utils; 17 import dwt.dwthelper.utils;
15 18
18 import dwt.graphics.ImageData; 21 import dwt.graphics.ImageData;
19 import dwt.internal.cocoa.NSData; 22 import dwt.internal.cocoa.NSData;
20 import dwt.internal.cocoa.NSImage; 23 import dwt.internal.cocoa.NSImage;
21 import dwt.internal.cocoa.OS; 24 import dwt.internal.cocoa.OS;
22 import dwt.widgets.Display; 25 import dwt.widgets.Display;
26
27 import dwt.dnd.DND;
28 import dwt.dnd.ByteArrayTransfer;
29 import dwt.dnd.TransferData;
23 30
24 /** 31 /**
25 * The class <code>ImageTransfer</code> provides a platform specific mechanism 32 * The class <code>ImageTransfer</code> provides a platform specific mechanism
26 * for converting an Image represented as a java <code>ImageData</code> to a 33 * for converting an Image represented as a java <code>ImageData</code> to a
27 * platform specific representation of the data and vice versa. 34 * platform specific representation of the data and vice versa.
35 * 42 *
36 * @see Transfer 43 * @see Transfer
37 * 44 *
38 * @since 3.4 45 * @since 3.4
39 */ 46 */
40 public class ImageTransfer extends ByteArrayTransfer { 47 public class ImageTransfer : ByteArrayTransfer {
41 48
42 static ImageTransfer _instance = new ImageTransfer(); 49 static ImageTransfer _instance;
43 static final String TIFF = OS.NSTIFFPboardType.getString(); 50 static const String TIFF;
44 static final int TIFFID = registerType(TIFF); 51 static const int TIFFID;
45 52
46 ImageTransfer() { 53 static this ()
54 {
55 _instance = new ImageTransfer();
56 TIFF = OS.NSTIFFPboardType.getString();
57 TIFFID = registerType(TIFF);
58 }
59
60 this() {
47 } 61 }
48 62
49 /** 63 /**
50 * Returns the singleton instance of the ImageTransfer class. 64 * Returns the singleton instance of the ImageTransfer class.
51 * 65 *
67 */ 81 */
68 public void javaToNative(Object object, TransferData transferData) { 82 public void javaToNative(Object object, TransferData transferData) {
69 if (!checkImage(object) || !isSupportedType(transferData)) { 83 if (!checkImage(object) || !isSupportedType(transferData)) {
70 DND.error(DND.ERROR_INVALID_DATA); 84 DND.error(DND.ERROR_INVALID_DATA);
71 } 85 }
72 ImageData imgData = (ImageData) object; 86 ImageData imgData = cast(ImageData) object;
73 Image image = new Image(Display.getCurrent(), imgData); 87 Image image = new Image(Display.getCurrent(), imgData);
74 NSImage handle = image.handle; 88 NSImage handle = image.handle;
75 transferData.data = handle.TIFFRepresentation(); 89 transferData.data = handle.TIFFRepresentation();
76 image.dispose(); 90 image.dispose();
77 } 91 }
86 * 100 *
87 * @see Transfer#javaToNative 101 * @see Transfer#javaToNative
88 */ 102 */
89 public Object nativeToJava(TransferData transferData) { 103 public Object nativeToJava(TransferData transferData) {
90 if (!isSupportedType(transferData) || transferData.data is null) return null; 104 if (!isSupportedType(transferData) || transferData.data is null) return null;
91 NSData data = (NSData) transferData.data; 105 NSData data = cast(NSData) transferData.data;
92 if (data.length() is 0) return null; 106 if (data.length() is 0) return null;
93 NSImage nsImage = (NSImage) new NSImage().alloc(); 107 NSImage nsImage = cast(NSImage) (new NSImage()).alloc();
94 nsImage.initWithData(data); 108 nsImage.initWithData(data);
95 //TODO: Image representation wrong??? 109 //TODO: Image representation wrong???
96 Image image = Image.cocoa_new(Display.getCurrent(), DWT.BITMAP, nsImage); 110 Image image = Image.cocoa_new(Display.getCurrent(), DWT.BITMAP, nsImage);
97 ImageData imageData = image.getImageData(); 111 ImageData imageData = image.getImageData();
98 image.dispose(); 112 image.dispose();
99 return imageData; 113 return imageData;
100 } 114 }
101 115
102 protected int[] getTypeIds() { 116 protected int[] getTypeIds() {
103 return new int[] { TIFFID }; 117 return [ TIFFID ];
104 } 118 }
105 119
106 protected String[] getTypeNames() { 120 protected String[] getTypeNames() {
107 return new String[] { TIFF }; 121 return [ TIFF ];
108 } 122 }
109 123
110 bool checkImage(Object object) { 124 bool checkImage(Object object) {
111 if (object is null || !(object instanceof ImageData)) return false; 125 if (object is null || !(cast(ImageData) object)) return false;
112 return true; 126 return true;
113 } 127 }
114 128
115 protected bool validate(Object object) { 129 protected bool validate(Object object) {
116 return checkImage(object); 130 return checkImage(object);