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<h6 id="header">RMagick 0.0.0 User's Guide and Reference</h6>
<div class="nav">« <a href="rvgtspan.html">Prev</a> | <a href="index.html">Contents</a> | <a href="rvgstyle.html">Next</a> »</div>
<h1>class RVG::Use <span class="superclass">< Object</span></h1>
<div id="toc">
<h2>Table of Contents</h2>
<h3>class methods</h3>
<ul>
<li><a href="#new">new</a></li>
</ul>
<h3>shared methods</h3>
<p>This class implements the <a href="rvgstyle.html">styles</a> method and the <a href="rvgxform.html">transform methods</a>.</p>
</div>
<h2 class="methods">class methods</h2>
<div class="sig">
<h3 id="new">new</h3>
<p>
RVG::Use.new(<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)-> <em>use</em>
</p>
</div>
<div class="desc">
<h4>Description</h4>
<p>
This method is usually invoked indirectly via the
<code>use</code> method in the <a href="rvg.html#RVG_use">RVG</a>, <a href="rvgclip.html#use">RVG::ClipPath</a>,
<a href="rvggroup.html#use">RVG::Group</a>, and <a href="rvgpattern.html#use">RVG::Pattern</a> classes.
</p>
<p>
The use object is similar to a group. Any styles specified on the use will propagate to the referenced object. However, styles on the referenced object
will override the styles specified on the RVG::Use object.
</p>
<h4>Arguments</h4>
<dl>
<dt>obj</dt>
<dd>
The object to be re-used. This is typically a
<a href="rvggroup.html#new">group</a> or <a href="rvg.html#RVG_new">RVG object</a> but can also be any <a href="rvgshape.html">shape</a>,
<a href="rvgtext.html#new">text</a>, or <a href="rvgimage.html#new">raster image</a>, or even another <code>use</code>.
</dd>
<dt>x, y</dt>
<dd>
These arguments can be used to specify an additional
<strong>translate</strong> transformation to be applied to the object within the user coordinate system.
</dd>
<dt>width, height</dt>
<dd>
The width and height of the rectangular region in which this object is placed. These arguments are ignored unless object is an RVG object. In this
case, the values of <span class="arg">width</span> and <span class="arg">height</span> override the values of the width and height arguments that were
specified when the RVG object was created.
</dd>
</dl>
<h4>Example</h4>
<p>
<strong>A simple 'use' on a 'rect'</strong
><a href="javascript:popup('use01.rb.html')"><img src="ex/use01.gif" title="Click to see the example script" alt="use example" /></a>
</p>
<p>
<strong>What happens when a 'use' has chained transform methods</strong
><a href="javascript:popup('use03.rb.html')"><img src="ex/use03.gif" title="Click to see the example script" alt="use example" /></a>
</p>
<p>
<strong>What happens when a 'use' has a chained 'style' method</strong
><a href="javascript:popup('use02.rb.html')"><img src="ex/use02.gif" title="Click to see the example script" alt="use example" /></a>
</p>
<p>Also see the example for <a href="rvg.html#RVG_new">RVG.new</a> and the example for <a href="rvggroup.html#new">RVG::Group.new</a>.</p>
</div>
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