a><h3 class="anchor"><code><span class="label label-meta label-meta-value" title="Used to store default values for fields and function arguments.">@:value({ scaleMath : true })</span><span class="label label-meta label-meta-keep" title="Causes a field or type to be kept by DCE.">@:keep</span><a href="#onSizeChange"><span class="identifier">onSizeChange</span></a>(<span style="white-space:nowrap">width:<span class="type">Null</span>&lt;<span class="type">Float</span>&gt;,</span> <span style="white-space:nowr