Mercurial > hg > digilib-old
annotate servlet/src/digilib/io/ImageFile.java @ 590:69bc69381ac4 stream
more work on stream input and more cleanup
| author | robcast |
|---|---|
| date | Thu, 06 Jan 2011 20:42:29 +0100 |
| parents | aee436f0549d |
| children | 2b58d2783ef0 |
| rev | line source |
|---|---|
| 159 | 1 /* ImageFile.java -- digilib image file class. |
| 2 | |
| 3 Digital Image Library servlet components | |
| 4 | |
| 5 Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de) | |
| 6 | |
| 7 This program is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 2 of the License, or (at your | |
| 10 option) any later version. | |
| 11 | |
| 12 Please read license.txt for the full details. A copy of the GPL | |
| 13 may be found at http://www.gnu.org/copyleft/lgpl.html | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
| 16 along with this program; if not, write to the Free Software | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 * Created on 25.02.2003 | |
| 20 */ | |
| 21 | |
| 22 package digilib.io; | |
| 23 | |
| 24 import java.io.File; | |
| 590 | 25 import java.io.FileNotFoundException; |
| 585 | 26 import java.io.IOException; |
| 590 | 27 import java.io.RandomAccessFile; |
| 28 | |
| 29 import javax.imageio.stream.FileImageInputStream; | |
| 30 import javax.imageio.stream.ImageInputStream; | |
| 159 | 31 |
| 32 import digilib.image.ImageSize; | |
| 585 | 33 import digilib.servlet.DigilibConfiguration; |
| 159 | 34 |
| 35 /** | |
| 36 * @author casties | |
| 37 */ | |
| 568 | 38 public class ImageFile extends ImageInput { |
| 159 | 39 |
| 583 | 40 // file |
| 41 private File file = null; | |
| 159 | 42 // file name |
| 583 | 43 private String name = null; |
| 159 | 44 // parent directory |
| 45 private Directory dir = null; | |
| 46 | |
| 583 | 47 /** Constructor with File. |
| 48 * | |
| 49 * @param f | |
| 50 * @param parent | |
| 51 * @param dir | |
| 52 */ | |
| 53 public ImageFile(File f, ImageSet parent, Directory dir) { | |
| 54 this.file = f; | |
| 55 this.name = f.getName(); | |
| 159 | 56 this.parent = parent; |
| 57 this.dir = dir; | |
| 58 } | |
| 59 | |
| 583 | 60 /** Constructor with filename (without path). |
| 61 * @param fn | |
| 62 * @param parent | |
| 63 * @param dir | |
| 64 */ | |
| 65 public ImageFile(String fn, ImageSet parent, Directory dir) { | |
| 66 this.name = fn; | |
| 67 this.dir = dir; | |
| 68 this.file = new File(this.dir.getDir(), fn); | |
| 69 this.parent = parent; | |
| 159 | 70 } |
| 71 | |
| 585 | 72 |
| 73 /** Checks the image and sets size and type. | |
| 74 * | |
| 75 */ | |
| 76 public void check() { | |
| 77 if (pixelSize == null) { | |
| 78 try { | |
| 79 // use the configured toolkit to identify the image | |
| 80 DigilibConfiguration.identifyDocuImage(this); | |
| 81 } catch (IOException e) { | |
| 82 // nothing much to do... | |
| 83 } | |
| 84 } | |
| 85 } | |
| 86 | |
| 87 /* (non-Javadoc) | |
| 88 * @see digilib.io.ImageInput#getSize() | |
| 89 */ | |
| 90 @Override | |
| 91 public ImageSize getSize() { | |
| 92 check(); | |
| 93 return pixelSize; | |
| 94 } | |
| 95 | |
| 96 /* (non-Javadoc) | |
| 97 * @see digilib.io.ImageInput#getMimetype() | |
| 98 */ | |
| 99 @Override | |
| 100 public String getMimetype() { | |
| 101 check(); | |
| 102 return mimetype; | |
| 103 } | |
| 104 | |
| 105 /* (non-Javadoc) | |
| 106 * @see digilib.io.ImageInput#getAspect() | |
| 107 */ | |
| 108 @Override | |
| 109 public float getAspect() { | |
| 110 check(); | |
| 111 return (pixelSize != null) ? pixelSize.getAspect() : 0f; | |
| 112 } | |
| 113 | |
| 114 /** Returns the file name (without path). | |
| 159 | 115 * |
| 116 * @return | |
| 117 */ | |
| 118 public String getName() { | |
| 583 | 119 return name; |
| 159 | 120 } |
| 121 | |
| 590 | 122 |
| 123 /* (non-Javadoc) | |
| 124 * @see digilib.io.ImageInput#hasImageInputStream() | |
| 125 */ | |
| 126 @Override | |
| 127 public boolean hasImageInputStream() { | |
| 128 return true; | |
| 129 } | |
| 130 | |
| 131 /* (non-Javadoc) | |
| 132 * @see digilib.io.ImageInput#getImageInputStream() | |
| 133 */ | |
| 134 @Override | |
| 135 public ImageInputStream getImageInputStream() { | |
| 136 try { | |
| 137 RandomAccessFile rf = new RandomAccessFile(file, "r"); | |
| 138 return new FileImageInputStream(rf); | |
| 139 } catch (IOException e) { | |
| 140 // what now? | |
| 141 } | |
| 142 return null; | |
| 143 } | |
| 144 | |
| 145 /* (non-Javadoc) | |
| 146 * @see digilib.io.ImageInput#hasFile() | |
| 147 */ | |
| 148 @Override | |
| 149 public boolean hasFile() { | |
| 150 return true; | |
| 151 } | |
| 152 | |
| 153 /* (non-Javadoc) | |
| 154 * @see digilib.io.ImageInput#getFile() | |
| 159 | 155 */ |
| 156 public File getFile() { | |
| 583 | 157 return file; |
| 159 | 158 } |
| 159 | |
| 566 | 160 /* (non-Javadoc) |
| 568 | 161 * @see digilib.io.ImageInput#setSize(digilib.image.ImageSize) |
| 159 | 162 */ |
| 568 | 163 public void setSize(ImageSize imageSize) { |
| 164 this.pixelSize = imageSize; | |
| 165 // pass on to parent | |
| 166 if (this.parent != null) { | |
| 167 this.parent.setAspect(imageSize); | |
| 168 } | |
| 566 | 169 } |
| 170 | |
|
576
dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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574
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171 /* (non-Javadoc) |
|
dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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172 * @see java.lang.Object#toString() |
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dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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173 */ |
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dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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174 @Override |
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175 public String toString() { |
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dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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176 // try to use File.toString |
| 583 | 177 if (file != null) { |
| 178 return file.toString(); | |
|
576
dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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179 } |
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dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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180 return super.toString(); |
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dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
robcast
parents:
574
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181 } |
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dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
robcast
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182 |
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dad720e9b12b
try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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parents:
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183 |
| 159 | 184 } |