127 lines
9.9 KiB
HTML
127 lines
9.9 KiB
HTML
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Creating barcodes</title><link rel="stylesheet" type="text/css" href="manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.0"><link rel="home" href="index.html" title="JpGraph Manual"><link rel="up" href="ch25.html" title="Chapter 25. PDF417 (2D-Barcode)"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Creating barcodes</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center">Chapter 25. PDF417 (2D-Barcode)</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="sect1" title="Creating barcodes"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2599426"></a>Creating barcodes</h2></div></div></div>
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<div class="sect2" title="Introduction"><div class="titlepage"><div><div><h3 class="title"><a name="id2599905"></a>Introduction</h3></div></div></div>
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<p>The library allows the creation of PDF417 barcodes as either images (in either PNG
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or JPEG format) or as a Postscript files. In addition the barcode extension provides
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extensive data verification which makes it impossible to create an invalid
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barcode</p>
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<div class="sect3" title="Verification"><div class="titlepage"><div><div><h4 class="title"><a name="id2599918"></a>Verification</h4></div></div></div>
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<p>The JpGraph PDF417 barcode module have been extensively verified using an
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ARGOX 8213 2D CCD handhold scanner. </p>
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</div>
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<div class="sect3" title="Features"><div class="titlepage"><div><div><h4 class="title"><a name="id2599930"></a>Features</h4></div></div></div>
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<p>This is a summary of the features available in the JpGraph PDF417 barcode
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extension. </p>
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<p>
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</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
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<p>Supports both standard and truncated PDF 417 codes</p>
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</li><li class="listitem">
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<p>Output format </p>
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<p>
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</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
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<p>Image format, (any of the formats supported by the
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library)</p>
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</li><li class="listitem">
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<p>Postscript</p>
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</li><li class="listitem">
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<p>Encapsulated postscript</p>
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</li></ol></div><p>
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</p>
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</li><li class="listitem">
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<p>Supports both auto and user selectable number of columns and
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rows</p>
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</li><li class="listitem">
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<p>Supports all 8 possible error correction levels</p>
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</li><li class="listitem">
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<p>Supports all defined compaction schemes, Alpha, Numeric and Byte.
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In addition the library has an optimization algorithm that will
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determine the best possible encoding given a specific input
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data.</p>
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</li><li class="listitem">
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<p>User specified module height</p>
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</li><li class="listitem">
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<p>User specified module width factor</p>
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</li><li class="listitem">
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<p>User specified overall image scaling of resulting barcode</p>
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</li><li class="listitem">
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<p>Horizontal or vertical barcode layout</p>
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</li><li class="listitem">
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<p>Optional human readable text at the bottom of the barcodes with
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selectable font and size</p>
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</li><li class="listitem">
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<p>Foreground and background color specification</p>
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</li></ul></div><p>
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</p>
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</div>
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<div class="sect3" title="Sample application"><div class="titlepage"><div><div><h4 class="title"><a name="id2600076"></a>Sample application</h4></div></div></div>
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<p>Even though the library module is meant, and designed, to be used as a library
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within a larger system there is a small demo barcode creation application
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included in the distribution. This application can be used to easily create
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barcode through it's WEB interface as can be seen in <a class="xref" href="ch25s02.html#fig.pdf417-demoapp" title="Figure 25.3. PDF417 WEB-based demo application">Figure 25.3. PDF417 WEB-based demo application</a></p>
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<p>This application is primarily included as a demo on the features available in
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the library and not as a finalized product.</p>
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<p>The application is available at
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"<code class="filename">pdf417/demoapp/index.html</code>" in the distribution. </p>
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<p>
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</p><div class="figure"><a name="fig.pdf417-demoapp"></a><p class="title"><b>Figure 25.3. PDF417 WEB-based demo application</b></p><div class="figure-contents">
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<div class="mediaobject"><img src="images/pdf417-demoapp.png" alt="PDF417 WEB-based demo application"></div>
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</div></div><p><br class="figure-break">
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</p>
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<p>The fields in the demo application has the following meaning</p>
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<p>
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</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
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<p><span class="bold"><strong>Data:</strong></span> Data to be encoded. This
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should be entered as a standard string.</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Encoding:</strong></span> Determine the
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compaction schema to be used</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Columns:</strong></span> Number of data columns
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to be used</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Error level:</strong></span> What error level to
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be used</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Module width:</strong></span> Module width</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Height factor:</strong></span> Specify the height
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of the individual rows in the barcode as a multiplier of the
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width.</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Scale:</strong></span> Scale factor.</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Text:</strong></span> Should the human readable
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text be shown?</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Vertical:</strong></span> Should the barcode use
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vertical layout?</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Frame:</strong></span> Should a frame be added to
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the barcode?</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Truncated:</strong></span> Should the barcode be
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truncated?</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>File:</strong></span> If specified the output
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will be written to this file</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>PS Module:</strong></span> If specified will be
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used as the module width for PS</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Format:</strong></span> If specified will set
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what image encoding will be used output</p>
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</li><li class="listitem">
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<p><span class="bold"><strong>Debug info:</strong></span> Will open a new frame
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and display some internal debugging information from the
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library.</p>
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</li></ul></div><p>
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</p>
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</div>
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</div>
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</div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"><a accesskey="u" href="ch25.html">Up</a></td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
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