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<title>The CairoFilter class</title>
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<h1 class="title">The CairoFilter class</h1>
<div class="partintro"><p class="verinfo">(No version information available, might only be in SVN)</p>
<div class="section" id="cairofilter.intro">
<h2 class="title">Introduction</h2>
<p class="para">
A <strong class="classname">CairoFilter</strong> is used to indicate what filtering should be applied when reading pixel values
from patterns. See <span class="methodname"><strong>CairoPattern::setSource()</strong></span> or <span class="function"><strong>cairo_pattern_set_source()</strong></span>
for indicating the desired filter to be used with a particular pattern.
</p>
</div>
<div class="section" id="cairofilter.synopsis">
<h2 class="title">Class synopsis</h2>
<div class="classsynopsis">
<div class="ooclass"></div>
<div class="classsynopsisinfo">
<span class="ooclass">
<strong class="classname">CairoFilter</strong>
</span>
{</div>
<div class="classsynopsisinfo classsynopsisinfo_comment">/* Constants */</div>
<div class="fieldsynopsis">
<span class="modifier">const</span>
<span class="type">integer</span>
<var class="fieldsynopsis_varname"><a href="class.cairofilter.html#cairofilter.constants.fast"><var class="varname">FAST</var></a></var>
<span class="initializer"> = 0</span>
;</div>
<div class="fieldsynopsis">
<span class="modifier">const</span>
<span class="type">integer</span>
<var class="fieldsynopsis_varname"><a href="class.cairofilter.html#cairofilter.constants.good"><var class="varname">GOOD</var></a></var>
<span class="initializer"> = 1</span>
;</div>
<div class="fieldsynopsis">
<span class="modifier">const</span>
<span class="type">integer</span>
<var class="fieldsynopsis_varname"><a href="class.cairofilter.html#cairofilter.constants.best"><var class="varname">BEST</var></a></var>
<span class="initializer"> = 2</span>
;</div>
<div class="fieldsynopsis">
<span class="modifier">const</span>
<span class="type">integer</span>
<var class="fieldsynopsis_varname"><a href="class.cairofilter.html#cairofilter.constants.nearest"><var class="varname">NEAREST</var></a></var>
<span class="initializer"> = 3</span>
;</div>
<div class="fieldsynopsis">
<span class="modifier">const</span>
<span class="type">integer</span>
<var class="fieldsynopsis_varname"><a href="class.cairofilter.html#cairofilter.constants.bilinear"><var class="varname">BILINEAR</var></a></var>
<span class="initializer"> = 4</span>
;</div>
<div class="fieldsynopsis">
<span class="modifier">const</span>
<span class="type">integer</span>
<var class="fieldsynopsis_varname"><a href="class.cairofilter.html#cairofilter.constants.gaussian"><var class="varname">GAUSSIAN</var></a></var>
<span class="initializer"> = 5</span>
;</div>
}</div>
</div>
<div class="section" id="cairofilter.constants">
<h2 class="title">Predefined Constants</h2>
<dl>
<dt id="cairofilter.constants.fast">
<span class="term"><strong><code>CairoFilter::FAST</code></strong></span>
<dd>
<p class="para"> A high-performance filter, with quality similar to <strong><code>CairoFilter::NEAREST</code></strong></p>
</dd>
</dt>
<dt id="cairofilter.constants.good">
<span class="term"><strong><code>CairoFilter::GOOD</code></strong></span>
<dd>
<p class="para">A reasonable-performance filter, with quality similar to <strong><code>CairoFilter::BILINEAR</code></strong></p>
</dd>
</dt>
<dt id="cairofilter.constants.best">
<span class="term"><strong><code>CairoFilter::BEST</code></strong></span>
<dd>
<p class="para">The highest-quality available, performance may not be suitable for interactive use.</p>
</dd>
</dt>
<dt id="cairofilter.constants.nearest">
<span class="term"><strong><code>CairoFilter::NEAREST</code></strong></span>
<dd>
<p class="para">Nearest-neighbor filtering </p>
</dd>
</dt>
<dt id="cairofilter.constants.bilinear">
<span class="term"><strong><code>CairoFilter::BILINEAR</code></strong></span>
<dd>
<p class="para">Linear interpolation in two dimensions </p>
</dd>
</dt>
<dt id="cairofilter.constants.gaussian">
<span class="term"><strong><code>CairoFilter::GAUSSIAN</code></strong></span>
<dd>
<p class="para">This filter value is currently unimplemented, and should not be used in current code. </p>
</dd>
</dt>
</dl>
</div>
</div>
</div>
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