Docs: Paper.getArea() (#1405)

Author: zbynekstara

docs/src/joint/api/dia/Paper/prototype/getArea.html

@@ -0,0 +1,4 @@
+<pre class="docs-method-signature"><code>paper.getArea()</code></pre>
+<p>Return a rectangle representing the area of the paper, in local units (without transformations).</p>
+
+<p>Creates a rectangle object with <code>{ x: 0, y: 0 }</code> and with <code>width</code> and <code>height</code> values according to the <code>paper.getComputedSize()</code> <a href="#dia.Paper.prototype.getComputedSize">function</a>. Then uses the <code>paper.paperToLocalRect()</code> <a href="#dia.Paper.prototype.paperToLocalRect">function</a> to transform that rectangle into local units.</p>