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| <title>Image Task</title> |
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| <body> |
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| <h2><a name="image">Image</a></h2> |
| <h3>Description</h3> |
| <p>Applies a chain of image operations on a set of files.</p> |
| <p>Requires Java Advanced Image API from Sun.</p> |
| |
| <h5>Overview of used datatypes</h5> |
| <img src="image-classdiagram.gif" border="0" alt="Class-Diagram"> |
| |
| <h3>Parameters</h3> |
| <table border="1" cellpadding="2" cellspacing="0"> |
| <tr> |
| <td valign="top"><b>Attribute</b></td> |
| <td valign="top"><b>Description</b></td> |
| <td align="center" valign="top"><b>Required</b></td> |
| </tr> |
| <tr> |
| <td valign="top"> failonerror </td> |
| <td valign="top"> Boolean value. If false, note errors to the output but keep going. </td> |
| <td align="center"> no (defaults to <i>true</i>) </td> |
| </tr> |
| <tr> |
| <td valign="top"> srcdir </td> |
| <td valign="top"> Directory containing the images. </td> |
| <td align="center"> yes, unless nested fileset is used </td> |
| </tr> |
| <tr> |
| <td valign="top"> encoding </td> |
| <td valign="top"> Image encoding type. <br> |
| Valid (caseinsensitive) are: jpg, jpeg, tif, tiff |
| </td> |
| <td align="center"> no (defaults to <i>JPEG</i>) </td> |
| </tr> |
| <tr> |
| <td valign="top"> overwrite </td> |
| <td valign="top"> Boolean value. Sets whether or not to overwrite |
| a file if there is naming conflict. |
| </td> |
| <td align="center"> no (defaults to <i>false</i>) </td> |
| </tr> |
| <tr> |
| <td valign="top"> gc </td> |
| <td valign="top"> Boolean value. Enables garbage collection after |
| each image processed. |
| </td> |
| <td align="center"> no (defaults to <i>false</i>) </td> |
| </tr> |
| <tr> |
| <td valign="top"> destdir </td> |
| <td valign="top"> Directory where the result images are stored. </td> |
| <td align="center"> no (defaults to value of <i>srcdir</i>) </td> |
| </tr> |
| <!-- attributes inherited from MatchingTask --> |
| <tr> |
| <td valign="top">includes</td> |
| <td valign="top">comma- or space-separated list of patterns of files that must be |
| included. All files are included when omitted.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">includesfile</td> |
| <td valign="top">the name of a file. Each line of this file is |
| taken to be an include pattern</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top"> excludes</td> |
| <td valign="top">comma- or space-separated list of patterns of files that must be |
| excluded. No files (except default excludes) are excluded when omitted.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">excludesfile</td> |
| <td valign="top">the name of a file. Each line of this file is |
| taken to be an exclude pattern</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">defaultexcludes</td> |
| <td valign="top">indicates whether default excludes should be used or not |
| ("yes"/"no"). Default excludes are used when omitted.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top"> caseSensitive </td> |
| <td valign="top"> Boolean value. Sets case sensitivity of the file system. </td> |
| <td align="center"> no (defaults to <i>false</i>) </td> |
| </tr> |
| <tr> |
| <td valign="top"> followSymlinks </td> |
| <td valign="top"> Boolean value. Sets whether or not symbolic links hsould be followed. </td> |
| <td align="center"> no (defaults to <i>true</i>) </td> |
| </tr> |
| </table> |
| |
| <h3>Parameters specified as nested elements</h3> |
| <p>This task forms an implicit <a href="../CoreTypes/fileset.html">FileSet</a> and |
| supports all attributes of <code><fileset></code> as well as the |
| nested <code><include></code>, <code><exclude></code> and |
| <code><patternset></code> elements.</p> |
| |
| |
| <h4>ImageOperation</h4> |
| <p>Adds an ImageOperation to chain.</p> |
| <h5>Nested Elements</h5> |
| ImageOperation can handle nested Rotate, Draw, Rectangle, Text and Scale objects. |
| |
| <h4>Rotate</h4> |
| <p>Adds a Rotate ImageOperation to chain.</p> |
| <h5>Parameters</h5> |
| <table border="1" cellpadding="2" cellspacing="0"> |
| <tr> |
| <td valign="top"><b>Attribute</b></td> |
| <td valign="top"><b>Description</b></td> |
| <td align="center" valign="top"><b>Required</b></td> |
| </tr> |
| <tr> |
| <td valign="top"> angle </td> |
| <td valign="top"> Float value. Sets the angle of rotation in degrees. </td> |
| <td align="center"> no (defaults to <i>0.0F</i>) </td> |
| </tr> |
| </table> |
| |
| <h4>Scale</h4> |
| <p>Adds a Scale ImageOperation to chain.</p> |
| <h5>Parameters</h5> |
| <table border="1" cellpadding="2" cellspacing="0"> |
| <tr> |
| <td valign="top"><b>Attribute</b></td> |
| <td valign="top"><b>Description</b></td> |
| <td align="center" valign="top"><b>Required</b></td> |
| </tr> |
| <td valign="top"> proportions </td> |
| <td valign="top"> Sets which dimension to control proportions from. Valid values are:<ul> |
| <li>"ignore" - treat the dimensions independently.</li> |
| <li>"height" - keep proportions based on the width.</li> |
| <li>"width" - keep proportions based on the height.</li> |
| <li>"cover" - keep proportions and fit in the supplied dimensions.</li> |
| <li>"fit" - keep proportions and cover the supplied dimensions.</li> |
| </ul></td> |
| <td align="center"> no (defaults to <i>ignore</i>) </td> |
| <tr> |
| <td valign="top"> width </td> |
| <td valign="top"> Sets the width of the image, either as an integer or a %. </td> |
| <!-- todo: if integer, what kind? cm, px, inches, ... --> |
| <td align="center"> no (defaults to <i>100%</i>) </td> |
| </tr> |
| <tr> |
| <td valign="top"> heigth </td> |
| <td valign="top"> Sets the height of the image, either as an integer or a %. </td> |
| <!-- todo: if integer, what kind? cm, px, inches, ... --> |
| <td align="center"> no (defaults to <i>100%</i>) </td> |
| </tr> |
| </table> |
| |
| <h4>Draw</h4> |
| <p>Adds a Draw ImageOperation to chain. DrawOperation DataType objects can be |
| nested inside the Draw object.</p> |
| <h5>Parameters</h5> |
| <table border="1" cellpadding="2" cellspacing="0"> |
| <tr> |
| <td valign="top"><b>Attribute</b></td> |
| <td valign="top"><b>Description</b></td> |
| <td align="center" valign="top"><b>Required</b></td> |
| </tr> |
| <tr> |
| <td valign="top"> xloc </td> |
| <td valign="top"> X-Position where to draw nested image elements. </td> |
| <td align="center"> no (defaults to <i>0</i>) </td> |
| </tr> |
| <tr> |
| <td valign="top"> yloc </td> |
| <td valign="top"> Y-Position where to draw nested image elements. </td> |
| <td align="center"> no (defaults to <i>0</i>) </td> |
| </tr> |
| </table> |
| |
| <h3>Examples</h3> |
| |
| <blockquote><pre> |
| <image destdir="samples/low" overwrite="yes"> |
| <fileset dir="samples/full"> |
| <include name="**/*.jpg"/> |
| </fileset> |
| <scale width="160" height="160" proportions="fit"/> |
| </image> |
| </pre></blockquote> |
| <p>Create thumbnails of my images and make sure they all fit within the 160x160 size whether the |
| image is portrait or landscape.</p> |
| |
| <blockquote><pre> |
| <image srcdir="src" includes="*.png"> |
| <scale proportions="width" width="40"/> |
| </image> |
| </pre></blockquote> |
| <p>Creates a thumbnail for all PNG-files in <i>src</i> in the size of 40 pixel keeping the proportions |
| and stores the <i>src</i>.</p> |
| |
| <blockquote><pre> |
| <image srcdir="src" destdir="dest" includes="*.png"> |
| <scale proportions="width" width="40"/> |
| </image> |
| </pre></blockquote> |
| <p>Same as above but stores the result in <i>dest</i>.</p> |
| |
| <blockquote><pre> |
| </pre></blockquote> |
| |
| <hr> |
| <p align="center">Copyright © 2003 Apache Software |
| Foundation. All rights Reserved.</p> |
| |
| </body> |
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