Mercurial > projects > dwt-addons
annotate dwtx/jface/resource/FileImageDescriptor.d @ 38:c884a1ab6db3
resource loading, fix type in image names
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 06 Apr 2008 14:15:58 +0200 |
| parents | c87617952847 |
| children | da5ad8eedf5d |
| rev | line source |
|---|---|
| 4 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 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.FileImageDescriptor; | |
| 14 | |
| 15 import dwtx.jface.resource.ImageDescriptor; | |
| 16 | |
| 17 // import java.io.BufferedInputStream; | |
| 18 // import java.io.FileInputStream; | |
| 19 // import java.io.FileNotFoundException; | |
| 20 // import java.io.IOException; | |
| 21 // import java.io.InputStream; | |
| 22 | |
| 23 import dwt.DWT; | |
| 24 import dwt.DWTException; | |
| 25 import dwt.graphics.ImageData; | |
| 26 | |
| 27 import dwt.dwthelper.utils; | |
| 28 import dwt.dwthelper.InputStream; | |
| 29 import dwt.dwthelper.FileInputStream; | |
| 30 import dwt.dwthelper.BufferedInputStream; | |
|
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31 import dwt.dwthelper.ByteArrayInputStream; |
| 4 | 32 |
| 33 /** | |
| 34 * An image descriptor that loads its image information | |
| 35 * from a file. | |
| 36 */ | |
| 37 class FileImageDescriptor : ImageDescriptor { | |
| 38 | |
| 39 /** | |
| 40 * The class whose resource directory contain the file, | |
| 41 * or <code>null</code> if none. | |
| 42 */ | |
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43 // private ClassInfo location; |
| 4 | 44 |
| 45 /** | |
| 46 * The name of the file. | |
| 47 */ | |
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48 // private String name; |
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49 private void[] importdata; |
| 4 | 50 |
| 51 /** | |
| 52 * Creates a new file image descriptor. | |
| 53 * The file has the given file name and is located | |
| 54 * in the given class's resource directory. If the given | |
| 55 * class is <code>null</code>, the file name must be absolute. | |
| 56 * <p> | |
| 57 * Note that the file is not accessed until its | |
| 58 * <code>getImageDate</code> method is called. | |
| 59 * </p> | |
| 60 * | |
| 61 * @param clazz class for resource directory, or | |
| 62 * <code>null</code> | |
| 63 * @param filename the name of the file | |
| 64 */ | |
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65 this(void[] importdata/+ClassInfo clazz, String filename+/) { |
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66 // this.location = clazz; |
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67 // this.name = filename; |
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68 this.importdata = importdata; |
| 4 | 69 } |
| 70 | |
| 71 /* (non-Javadoc) | |
| 72 * Method declared on Object. | |
| 73 */ | |
| 74 public bool equals(Object o) { | |
| 75 if (!( cast(FileImageDescriptor)o )) { | |
| 76 return false; | |
| 77 } | |
| 78 FileImageDescriptor other = cast(FileImageDescriptor) o; | |
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79 // if (location !is null) { |
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80 // if ( location.name != other.location.name ) { |
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81 // return false; |
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82 // } |
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83 // } else { |
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84 // if (other.location !is null) { |
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85 // return false; |
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86 // } |
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87 // } |
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88 return importdata == other.importdata; |
| 4 | 89 } |
| 90 | |
| 91 /* (non-Javadoc) | |
| 92 * Method declared on ImageDesciptor. | |
| 93 * Returns null if the image data cannot be read. | |
| 94 */ | |
| 95 public ImageData getImageData() { | |
| 96 InputStream in_ = getStream(); | |
| 97 ImageData result = null; | |
| 98 if (in_ !is null) { | |
| 99 try { | |
| 100 result = new ImageData(in_); | |
| 101 } catch (DWTException e) { | |
| 102 if (e.code !is DWT.ERROR_INVALID_IMAGE) { | |
| 103 throw e; | |
| 104 // fall through otherwise | |
| 105 } | |
| 106 } finally { | |
| 107 in_.close(); | |
| 108 } | |
| 109 } | |
| 110 return result; | |
| 111 } | |
| 112 | |
| 113 /** | |
| 114 * Returns a stream on the image contents. Returns | |
| 115 * null if a stream could not be opened. | |
| 116 * | |
| 117 * @return the buffered stream on the file or <code>null</code> | |
| 118 * if the file cannot be found | |
| 119 */ | |
| 120 private InputStream getStream() { | |
| 121 InputStream is_ = null; | |
| 122 | |
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123 // if (location !is null) { |
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124 is_ = new ByteArrayInputStream(cast(byte[]) importdata); |
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125 // is_ = ClassInfoGetResourceAsStream( location, name); |
| 4 | 126 |
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127 // } else { |
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128 // try { |
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129 // is_ = new FileInputStream(name); |
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130 // } catch (/+FileNotFoundException+/ IOException e) { |
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131 // return null; |
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132 // } |
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133 // } |
| 4 | 134 if (is_ is null) { |
| 135 return null; | |
| 136 } else { | |
| 137 return new BufferedInputStream(is_); | |
| 138 } | |
| 139 } | |
| 140 | |
| 141 /* (non-Javadoc) | |
| 142 * Method declared on Object. | |
| 143 */ | |
| 144 public override hash_t toHash() { | |
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145 int code = dwt.dwthelper.utils.toHash(cast(char[])importdata/+name+/); |
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146 // if (location !is null) { |
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147 // code += location.toHash(); |
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148 // } |
| 4 | 149 return code; |
| 150 } | |
| 151 | |
| 152 /* (non-Javadoc) | |
| 153 * Method declared on Object. | |
| 154 */ | |
| 155 /** | |
| 156 * The <code>FileImageDescriptor</code> implementation of this <code>Object</code> method | |
| 157 * returns a string representation of this object which is suitable only for debugging. | |
| 158 */ | |
| 159 public override String toString() { | |
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160 // return "FileImageDescriptor(location=" ~ location.toString() ~ ", name=" ~ name ~ ")";//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$ |
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161 return "FileImageDescriptor()";//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$ |
| 4 | 162 } |
| 163 } |