Mercurial > projects > dwt-addons
annotate dwtx/jface/resource/DerivedImageDescriptor.d @ 43:ea8ff534f622
Fix override and super aliases
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Fri, 11 Apr 2008 01:24:25 +0200 |
| parents | c87617952847 |
| children |
| rev | line source |
|---|---|
| 4 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2005, 2006 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module dwtx.jface.resource.DerivedImageDescriptor; | |
| 14 | |
| 15 import dwtx.jface.resource.ImageDescriptor; | |
| 16 import dwtx.jface.resource.DeviceResourceException; | |
| 17 | |
| 18 import dwt.DWT; | |
| 19 import dwt.DWTException; | |
| 20 import dwt.graphics.Device; | |
| 21 import dwt.graphics.Image; | |
| 22 import dwt.graphics.ImageData; | |
| 23 import dwt.widgets.Display; | |
| 24 | |
| 25 import dwt.dwthelper.utils; | |
| 26 | |
| 27 /** | |
| 28 * An image descriptor which creates images based on another ImageDescriptor, but with | |
| 29 * additional DWT flags. Note that this is only intended for compatibility. | |
| 30 * | |
| 31 * @since 3.1 | |
| 32 */ | |
| 33 final class DerivedImageDescriptor : ImageDescriptor { | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
4
diff
changeset
|
34 alias ImageDescriptor.createImage createImage; |
| 4 | 35 |
| 36 private ImageDescriptor original; | |
| 37 private int flags; | |
| 38 | |
| 39 /** | |
| 40 * Create a new image descriptor | |
| 41 * @param original the original one | |
| 42 * @param swtFlags flags to be used when image is created {@link Image#Image(Device, Image, int)} | |
| 43 * @see DWT#IMAGE_COPY | |
| 44 * @see DWT#IMAGE_DISABLE | |
| 45 * @see DWT#IMAGE_GRAY | |
| 46 */ | |
| 47 public this(ImageDescriptor original, int swtFlags) { | |
| 48 this.original = original; | |
| 49 flags = swtFlags; | |
| 50 } | |
| 51 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
4
diff
changeset
|
52 public override Object createResource(Device device) { |
| 4 | 53 try { |
| 54 return internalCreateImage(device); | |
| 55 } catch (DWTException e) { | |
| 56 throw new DeviceResourceException(this, e); | |
| 57 } | |
| 58 } | |
| 59 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
4
diff
changeset
|
60 public override Image createImage(Device device) { |
| 4 | 61 return internalCreateImage(device); |
| 62 } | |
| 63 | |
| 64 public override hash_t toHash() { | |
| 65 return original.toHash() + flags; | |
| 66 } | |
| 67 | |
| 68 public override int opEquals(Object arg0) { | |
| 69 if ( auto desc = cast(DerivedImageDescriptor)arg0 ) { | |
| 70 return desc.original is original && flags is desc.flags; | |
| 71 } | |
| 72 | |
| 73 return false; | |
| 74 } | |
| 75 | |
| 76 /** | |
| 77 * Creates a new Image on the given device. Note that we defined a new | |
| 78 * method rather than overloading createImage since this needs to be | |
| 79 * called by getImageData(), and we want to be absolutely certain not | |
| 80 * to cause infinite recursion if the base class gets refactored. | |
| 81 * | |
| 82 * @param device device to create the image on | |
| 83 * @return a newly allocated Image. Must be disposed by calling image.dispose(). | |
| 84 */ | |
| 85 private final Image internalCreateImage(Device device) { | |
| 86 Image originalImage = original.createImage(device); | |
| 87 Image result = new Image(device, originalImage, flags); | |
| 88 original.destroyResource(originalImage); | |
| 89 return result; | |
| 90 } | |
| 91 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
4
diff
changeset
|
92 public override ImageData getImageData() { |
| 4 | 93 Image image = internalCreateImage(Display.getCurrent()); |
| 94 ImageData result = image.getImageData(); | |
| 95 image.dispose(); | |
| 96 return result; | |
| 97 } | |
| 98 | |
| 99 } |