�为null，则使用全局的设计尺寸。</p><p class="javadoc">Parameters:</p><table class="table table-bordered params"><tr><th style="width:25%;"><code>width</code></th><td><p>设置hdwidth宽度</p></td></tr><tr><th style="width:25%;"><code>height</code></th><td><p>设置hdheight高度</p></td></tr><tr><th style="width:25%;"><code>scaleMath</code></th><td><p>是否需要实装缩放处理</p></td></tr></table></div></div><div class="field "><a name="scale"></a><h3 class="anchor"><code><span class="la