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1 /* ImageFile.java -- digilib image file class.
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2
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3 Digital Image Library servlet components
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4
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5 Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de)
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6
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7 This program is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2 of the License, or (at your
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10 option) any later version.
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11
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12 Please read license.txt for the full details. A copy of the GPL
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13 may be found at http://www.gnu.org/copyleft/lgpl.html
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 * Created on 25.02.2003
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20 */
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21
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22 package digilib.io;
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23
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24 import java.io.File;
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585
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25 import java.io.IOException;
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590
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26 import java.io.RandomAccessFile;
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27
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590
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28 import javax.imageio.stream.FileImageInputStream;
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29 import javax.imageio.stream.ImageInputStream;
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159
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30
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585
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31 import digilib.servlet.DigilibConfiguration;
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596
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32 import digilib.util.ImageSize;
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159
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33
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34 /**
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35 * @author casties
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36 */
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568
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37 public class ImageFile extends ImageInput {
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38
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583
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39 // file
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40 private File file = null;
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41 // file name
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583
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42 private String name = null;
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43 // parent directory
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44 private Directory dir = null;
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579
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45
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583
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46 /** Constructor with File.
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47 *
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48 * @param f
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49 * @param parent
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50 * @param dir
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51 */
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52 public ImageFile(File f, ImageSet parent, Directory dir) {
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53 this.file = f;
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54 this.name = f.getName();
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55 this.parent = parent;
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56 this.dir = dir;
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57 }
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58
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583
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59 /** Constructor with filename (without path).
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60 * @param fn
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61 * @param parent
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62 * @param dir
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63 */
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64 public ImageFile(String fn, ImageSet parent, Directory dir) {
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65 this.name = fn;
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66 this.dir = dir;
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67 this.file = new File(this.dir.getDir(), fn);
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68 this.parent = parent;
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159
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69 }
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70
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566
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71
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585
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72 /** Checks the image and sets size and type.
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73 *
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74 */
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75 public void check() {
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76 if (pixelSize == null) {
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77 try {
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78 // use the configured toolkit to identify the image
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79 DigilibConfiguration.identifyDocuImage(this);
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80 } catch (IOException e) {
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81 // nothing much to do...
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82 }
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83 }
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84 }
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85
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86 /* (non-Javadoc)
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87 * @see digilib.io.ImageInput#getSize()
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88 */
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89 @Override
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90 public ImageSize getSize() {
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91 check();
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92 return pixelSize;
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93 }
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94
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95 /* (non-Javadoc)
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96 * @see digilib.io.ImageInput#getMimetype()
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97 */
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98 @Override
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99 public String getMimetype() {
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100 check();
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101 return mimetype;
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102 }
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103
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104 /* (non-Javadoc)
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105 * @see digilib.io.ImageInput#getAspect()
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106 */
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107 @Override
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108 public float getAspect() {
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109 check();
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110 return (pixelSize != null) ? pixelSize.getAspect() : 0f;
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111 }
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112
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113 /** Returns the file name (without path).
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159
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114 *
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115 * @return
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116 */
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117 public String getName() {
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118 return name;
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119 }
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120
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590
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121
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122 /* (non-Javadoc)
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123 * @see digilib.io.ImageInput#hasImageInputStream()
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124 */
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125 @Override
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126 public boolean hasImageInputStream() {
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127 return true;
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128 }
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159
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129
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590
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130 /* (non-Javadoc)
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131 * @see digilib.io.ImageInput#getImageInputStream()
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132 */
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133 @Override
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134 public ImageInputStream getImageInputStream() {
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135 try {
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136 RandomAccessFile rf = new RandomAccessFile(file, "r");
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137 return new FileImageInputStream(rf);
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138 } catch (IOException e) {
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139 // what now?
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140 }
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141 return null;
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142 }
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143
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144 /* (non-Javadoc)
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145 * @see digilib.io.ImageInput#hasFile()
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146 */
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147 @Override
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148 public boolean hasFile() {
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149 return true;
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150 }
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151
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152 /* (non-Javadoc)
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153 * @see digilib.io.ImageInput#getFile()
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159
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154 */
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155 public File getFile() {
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583
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156 return file;
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159
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157 }
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158
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566
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159 /* (non-Javadoc)
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568
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160 * @see digilib.io.ImageInput#setSize(digilib.image.ImageSize)
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159
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161 */
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568
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162 public void setSize(ImageSize imageSize) {
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163 this.pixelSize = imageSize;
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164 // pass on to parent
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165 if (this.parent != null) {
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166 this.parent.setAspect(imageSize);
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167 }
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168 }
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169
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170 /* (non-Javadoc)
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try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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171 * @see java.lang.Object#toString()
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172 */
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173 @Override
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try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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174 public String toString() {
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175 // try to use File.toString
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583
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176 if (file != null) {
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177 return file.toString();
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try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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178 }
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try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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179 return super.toString();
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579
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180 }
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181
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try: DocuDirent as interface, ImageFile inherits from ImageInput and implements DocuDirent
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182
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183 }
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