Mercurial > projects > dwt-win
annotate dwt/graphics/Resource.d @ 335:47b37f126740
Global flag to disable the dispose checking
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Wed, 18 Feb 2009 17:10:51 +0100 |
| parents | c49e17d48b76 |
| children |
| rev | line source |
|---|---|
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Minor changes to be more compatible to dwt-linux, formatting in toString, Display.DEBUG=true
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1 /******************************************************************************* |
| 246 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 14 | 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 | |
|
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Minor changes to be more compatible to dwt-linux, formatting in toString, Display.DEBUG=true
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10 * Port to the D programming language: |
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f906dbcacee5
Minor changes to be more compatible to dwt-linux, formatting in toString, Display.DEBUG=true
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11 * Frank Benoit <benoit@tionex.de> |
| 14 | 12 *******************************************************************************/ |
| 13 module dwt.graphics.Resource; | |
| 14 | |
| 15 import dwt.DWT; | |
| 16 import dwt.graphics.Device; | |
| 17 | |
| 18 /** | |
|
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19 * This class is the abstract superclass of all graphics resource objects. |
| 14 | 20 * Resources created by the application must be disposed. |
| 21 * <p> | |
| 22 * IMPORTANT: This class is intended to be subclassed <em>only</em> | |
| 23 * within the DWT implementation. However, it has not been marked | |
| 24 * final to allow those outside of the DWT development team to implement | |
| 25 * patched versions of the class in order to get around specific | |
| 26 * limitations in advance of when those limitations can be addressed | |
| 27 * by the team. Any class built using subclassing to access the internals | |
| 28 * of this class will likely fail to compile or run between releases and | |
| 29 * may be strongly platform specific. Subclassing should not be attempted | |
| 30 * without an intimate and detailed understanding of the workings of the | |
| 31 * hierarchy. No support is provided for user-written classes which are | |
| 32 * implemented as subclasses of this class. | |
| 33 * </p> | |
| 34 * | |
| 35 * @see #dispose | |
| 36 * @see #isDisposed | |
| 246 | 37 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
|
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Minor changes to be more compatible to dwt-linux, formatting in toString, Display.DEBUG=true
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38 * |
| 14 | 39 * @since 3.1 |
| 40 */ | |
| 41 public abstract class Resource { | |
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42 |
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43 /// DWT extension for D: do no dispose check |
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Global flag to disable the dispose checking
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44 public bool disposeChecking = true; |
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47b37f126740
Global flag to disable the dispose checking
Frank Benoit <benoit@tionex.de>
parents:
334
diff
changeset
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45 /// DWT extension for D: do no dispose check |
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47b37f126740
Global flag to disable the dispose checking
Frank Benoit <benoit@tionex.de>
parents:
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46 public static bool globalDisposeChecking = true; |
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334
c49e17d48b76
Fix problems at GC run at main()'s end.
Frank Benoit <benoit@tionex.de>
parents:
333
diff
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47 |
| 14 | 48 /** |
| 49 * the device where this resource was created | |
| 50 */ | |
| 51 Device device; | |
| 52 | |
| 246 | 53 public this() { |
| 213 | 54 } |
| 55 | |
| 56 this(Device device) { | |
| 57 if (device is null) device = Device.getDevice(); | |
| 58 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 59 this.device = device; | |
| 60 } | |
| 61 | |
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684eed7589a0
Generate error if a resource is deleted without disposal. Without that, is is very hard to find accidental deleted/scoped Color/Font/..
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62 ~this(){ |
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63 if( globalDisposeChecking && disposeChecking && !isDisposed() ){ |
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64 DWT.error( 0, null, " Resource deleted, but is not yet disposed. " |
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65 "This check can be disabled with " |
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Global flag to disable the dispose checking
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66 "\"import dwt.graphics.Resource; " |
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67 "Resource.globalDisposeChecking = false; \". " |
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Global flag to disable the dispose checking
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parents:
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68 "This problem occured with type " ~ this.classinfo.name ~ |
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47b37f126740
Global flag to disable the dispose checking
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69 " this.toString()=" ~ this.toString() ); |
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333
684eed7589a0
Generate error if a resource is deleted without disposal. Without that, is is very hard to find accidental deleted/scoped Color/Font/..
Frank Benoit <benoit@tionex.de>
parents:
246
diff
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70 } |
|
684eed7589a0
Generate error if a resource is deleted without disposal. Without that, is is very hard to find accidental deleted/scoped Color/Font/..
Frank Benoit <benoit@tionex.de>
parents:
246
diff
changeset
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71 } |
|
684eed7589a0
Generate error if a resource is deleted without disposal. Without that, is is very hard to find accidental deleted/scoped Color/Font/..
Frank Benoit <benoit@tionex.de>
parents:
246
diff
changeset
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72 |
| 213 | 73 void destroy() { |
| 74 } | |
| 75 | |
| 14 | 76 /** |
| 77 * Disposes of the operating system resources associated with | |
| 78 * this resource. Applications must dispose of all resources | |
| 79 * which they allocate. | |
| 80 */ | |
| 213 | 81 public void dispose() { |
| 82 if (device is null) return; | |
| 83 if (device.isDisposed()) return; | |
| 84 destroy(); | |
| 85 if (device.tracking) device.dispose_Object(this); | |
| 86 device = null; | |
| 87 } | |
| 14 | 88 |
| 89 /** | |
| 90 * Returns the <code>Device</code> where this resource was | |
| 91 * created. | |
| 92 * | |
| 93 * @return <code>Device</code> the device of the receiver | |
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174
f906dbcacee5
Minor changes to be more compatible to dwt-linux, formatting in toString, Display.DEBUG=true
Frank Benoit <benoit@tionex.de>
parents:
14
diff
changeset
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94 * |
| 14 | 95 * @since 3.2 |
| 96 */ | |
| 97 public Device getDevice() { | |
| 98 Device device = this.device; | |
| 99 if (device is null || isDisposed ()) DWT.error (DWT.ERROR_GRAPHIC_DISPOSED); | |
| 100 return device; | |
| 101 } | |
| 102 | |
| 213 | 103 void init_() { |
| 104 if (device.tracking) device.new_Object(this); | |
| 105 } | |
| 106 | |
| 14 | 107 /** |
| 108 * Returns <code>true</code> if the resource has been disposed, | |
| 109 * and <code>false</code> otherwise. | |
| 110 * <p> | |
| 111 * This method gets the dispose state for the resource. | |
| 112 * When a resource has been disposed, it is an error to | |
| 113 * invoke any other method using the resource. | |
| 114 * | |
| 115 * @return <code>true</code> when the resource is disposed and <code>false</code> otherwise | |
| 116 */ | |
| 117 public abstract bool isDisposed(); | |
| 118 | |
| 119 } |