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<title>RMagick 0.0.0: RVG Reference: RVG::ClipPath Class</title>
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<h6 id="header">RMagick 0.0.0 User's Guide and Reference</h6>
<div class="nav">
&laquo;&nbsp;<a href="rvgpattern.html">Prev</a> | <a href=
"index.html">Contents</a> | <a href=
<h1>class RVG::ClipPath <span class="superclass">&lt;
<div id="toc">
<h2>Table of Contents</h2>
<h3>class methods</h3>
<li><a href="#new">new</a></li>
<div class="toccol">
<li><a href="#desc">desc, desc=</a></li>
<li><a href="#metadata">metadata, metadata=</a></li>
<li><a href="#title">title, title=</a></li>
<h3>instance methods</h3>
<div class="toccol">
<li><a href="#g">text</a></li>
<li><a href="#use">use</a></li>
<h3>shared methods</h3>
<p>In addition to the methods listed above, <code>class
RVG::ClipPath</code> also implements the <a href=
"rvgstyle.html">styles</a> method and the <a href=
"rvgshape.html">shape methods</a>.</p>
<h2 class="methods">class methods</h2>
<div class="sig">
<h3 id="new">new</h3>
<p><span class="arg">clip_path_units</span>)
[ <span class="arg">{ |clippath| drawing method calls }</span>
] -&gt; aClipPath</p>
<div class="desc">
<p>Creates a <em>clipping path</em>. A clipping path is a
combination of path, text, and basic shape objects that define
an outline. Attach the clipping path to an object such as a
raster image or RVG object with the :clip_path style. When RVG
draws the object, things "outside" the path are not drawn.</p>
<p>The method yields to a block. Within the block
define the clipping path with a combination of path, basic
shape, and <a href="#text">text</a> objects. You can also use
the <a href="#use">use</a> method to refer to a
previously-defined object or group of objects.</p>
<dd>Defines the coordinate system for the contents of the
clipping path. This argument can take either of two values,
<strong>userSpaceOnUse</strong>, or
<strong>objectBoundingBox</strong>. If
<code>userSpaceOnUse</code>, the contents of the clipping
path represent values in the current user coordinate system
in place at the time when the clipping path is referenced. if
objectBoundingBox, then the user coordinate system for the
contents of the clipping path is established using the
bounding box of the object to which the clipping path is
applied. The default is <code>userSpaceOnUse</code>.</dd>
<p><a href="javascript:popup('rvg_clippath.rb.html')"><img src=
"ex/rvg_clippath.gif" title="Click to see the example script"
alt="clipping path example" /></a></p>
<h4>See Also</h4>
<p>The <a href="rvgstyle.html">:clip_rule</a> style.</p>
<h2 class="methods">attributes</h2>
<div class="sig">
<h3 id="desc">desc, desc=</h3>
<p><span class="arg">clippath</span>.desc -&gt; <span class=
"arg">aString</span><br />
<span class="arg">clippath</span>.desc = <span class=
<div class="desc">
<h4>Description</h4>Use the <code>desc</code> attribute to
assign a text description to the clipping path.
<div class="sig">
<h3 id="metadata">metadata, metadata=</h3>
<p><span class="arg">clippath</span>.metadata -&gt;
<span class="arg">aString</span><br />
<span class="arg">clippath</span>.metadata = <span class=
<div class="desc">
<h4>Description</h4>Use the <code>metadata</code> attribute to
assign additional metadata to the clipping path.
<div class="sig">
<h3 id="title">title, title=</h3>
<p><span class="arg">clippath</span>.title -&gt; <span class=
"arg">aString</span><br />
<span class="arg">clippath</span>.title = <span class=
<div class="desc">
<h4>Description</h4>Use the <code>title</code> attribute to
assign a title to the clipping path.
<h2 class="methods">instance methods</h2>
<div class="sig">
<h3 id='text'>text</h3>
<p><span class="arg">clippath.</span>text(<span class=
"arg">x</span>=0, <span class="arg">y</span>=0, <span class=
"arg">text</span>=nil) [{|<span class="arg">aText</span>| ...}]
-&gt; <span class="arg">aText</span></p>
<div class="desc">
<p>Calls <a href="rvgtext.html#new"></a> to
construct a text object and adds it to the clipping path.
Yields to a block if one is present, passing the new text
object as an argument.</p>
<p>The <code>RVG::Text</code> object, so other
<code>RVG::Text</code> methods can be chained to this
<div class="sig">
<h3 id="use">use</h3>
<p><span class="arg">clippath.</span>use(<span class=
"arg">obj</span>, <span class="arg">x</span>=0, <span class=
"arg">y</span>=0, <span class="arg">width</span>=nil,
<span class="arg">height</span>=nil) -&gt; <span class=
<div class="desc">
<p>Calls <a href="rvguse.html#new"></a> to
constructs a <code>use</code> object and adds it to the
clipping path.</p>
<p>When the referenced argument is another RVG object,
<span class="arg">width</span> and <span class=
"arg">height</span> can be used to specify the width and height
of the viewport. If present and non-nil, these arguments
override any width and height specified when the RVG object was
created. You must specify the viewport size either when
creating the RVG object or when referencing it with
<p>See <a href="rvguse.html#new"></a></p>
<p>The <code>RVG::Use</code> object, so other
<code>RVG::Use</code> methods can be chained to this
<p class="spacer">&nbsp;</p>
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