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phptsmadmin/includes/jpgraph/docs/chunkhtml/ch25s02.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>
<div class="sect2" title="Introduction"><div class="titlepage"><div><div><h3 class="title"><a name="id2599905"></a>Introduction</h3></div></div></div>
<p>The library allows the creation of PDF417 barcodes as either images (in either PNG
or JPEG format) or as a Postscript files. In addition the barcode extension provides
extensive data verification which makes it impossible to create an invalid
barcode</p>
<div class="sect3" title="Verification"><div class="titlepage"><div><div><h4 class="title"><a name="id2599918"></a>Verification</h4></div></div></div>
<p>The JpGraph PDF417 barcode module have been extensively verified using an
ARGOX 8213 2D CCD handhold scanner. </p>
</div>
<div class="sect3" title="Features"><div class="titlepage"><div><div><h4 class="title"><a name="id2599930"></a>Features</h4></div></div></div>
<p>This is a summary of the features available in the JpGraph PDF417 barcode
extension. </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>Supports both standard and truncated PDF 417 codes</p>
</li><li class="listitem">
<p>Output format </p>
<p>
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<p>Image format, (any of the formats supported by the
library)</p>
</li><li class="listitem">
<p>Postscript</p>
</li><li class="listitem">
<p>Encapsulated postscript</p>
</li></ol></div><p>
</p>
</li><li class="listitem">
<p>Supports both auto and user selectable number of columns and
rows</p>
</li><li class="listitem">
<p>Supports all 8 possible error correction levels</p>
</li><li class="listitem">
<p>Supports all defined compaction schemes, Alpha, Numeric and Byte.
In addition the library has an optimization algorithm that will
determine the best possible encoding given a specific input
data.</p>
</li><li class="listitem">
<p>User specified module height</p>
</li><li class="listitem">
<p>User specified module width factor</p>
</li><li class="listitem">
<p>User specified overall image scaling of resulting barcode</p>
</li><li class="listitem">
<p>Horizontal or vertical barcode layout</p>
</li><li class="listitem">
<p>Optional human readable text at the bottom of the barcodes with
selectable font and size</p>
</li><li class="listitem">
<p>Foreground and background color specification</p>
</li></ul></div><p>
</p>
</div>
<div class="sect3" title="Sample application"><div class="titlepage"><div><div><h4 class="title"><a name="id2600076"></a>Sample application</h4></div></div></div>
<p>Even though the library module is meant, and designed, to be used as a library
within a larger system there is a small demo barcode creation application
included in the distribution. This application can be used to easily create
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>
<p>This application is primarily included as a demo on the features available in
the library and not as a finalized product.</p>
<p>The application is available at
"<code class="filename">pdf417/demoapp/index.html</code>" in the distribution. </p>
<p>
</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">
<div class="mediaobject"><img src="images/pdf417-demoapp.png" alt="PDF417 WEB-based demo application"></div>
</div></div><p><br class="figure-break">
</p>
<p>The fields in the demo application has the following meaning</p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><span class="bold"><strong>Data:</strong></span> Data to be encoded. This
should be entered as a standard string.</p>
</li><li class="listitem">
<p><span class="bold"><strong>Encoding:</strong></span> Determine the
compaction schema to be used</p>
</li><li class="listitem">
<p><span class="bold"><strong>Columns:</strong></span> Number of data columns
to be used</p>
</li><li class="listitem">
<p><span class="bold"><strong>Error level:</strong></span> What error level to
be used</p>
</li><li class="listitem">
<p><span class="bold"><strong>Module width:</strong></span> Module width</p>
</li><li class="listitem">
<p><span class="bold"><strong>Height factor:</strong></span> Specify the height
of the individual rows in the barcode as a multiplier of the
width.</p>
</li><li class="listitem">
<p><span class="bold"><strong>Scale:</strong></span> Scale factor.</p>
</li><li class="listitem">
<p><span class="bold"><strong>Text:</strong></span> Should the human readable
text be shown?</p>
</li><li class="listitem">
<p><span class="bold"><strong>Vertical:</strong></span> Should the barcode use
vertical layout?</p>
</li><li class="listitem">
<p><span class="bold"><strong>Frame:</strong></span> Should a frame be added to
the barcode?</p>
</li><li class="listitem">
<p><span class="bold"><strong>Truncated:</strong></span> Should the barcode be
truncated?</p>
</li><li class="listitem">
<p><span class="bold"><strong>File:</strong></span> If specified the output
will be written to this file</p>
</li><li class="listitem">
<p><span class="bold"><strong>PS Module:</strong></span> If specified will be
used as the module width for PS</p>
</li><li class="listitem">
<p><span class="bold"><strong>Format:</strong></span> If specified will set
what image encoding will be used output</p>
</li><li class="listitem">
<p><span class="bold"><strong>Debug info:</strong></span> Will open a new frame
and display some internal debugging information from the
library.</p>
</li></ul></div><p>
</p>
</div>
</div>
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