package test
{
import flash.geom.Point;
import mx.core.IVisualElement;
import spark.components.Label;
import spark.components.VGroup;
public class MyVGroup extends VGroup
{
public function MyVGroup()
{
super();
}
private var vgtitle:Label; // 标题控件
private var _title:String; // 设置标题变量
private var _pad:int; // 设置自定义容器中添加的子控件与边框的距离，上边距*2
private var _pos:int; // 设置标题相对容器的 x 坐标
override protected function createChildren():void {
super.createChildren();
if (!vgtitle) {
vgtitle = new Label();
vgtitle.text = title;
addElement(vgtitle);
}
}
override protected function measure():void {
super.measure();
pad = pad <= 0 ? 10 : pad;
// 增加容器的大小
measuredWidth += pad * 2;
measuredHeight += pad;
// 设置子控件距离边框的距离
paddingLeft = pad;
paddingTop = pad * 2;
paddingRight = pad;
paddingBottom = pad;
}
override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void {
// 清除自定义边框重画
graphics.clear();
super.updateDisplayList(unscaledWidth, unscaledHeight);
// 移动标题至目标位置
pos = pos <= 0 ? 18 : pos;
vgtitle.move(pos, 0);
//根据标题位置画出边框位置
graphics.lineStyle(1, 0x000000, 1.0);
graphics.moveTo(vgtitle.x - 2, vgtitle.height/2);
graphics.lineTo(0, vgtitle.height/2);
graphics.lineTo(0, unscaledHeight);
graphics.lineTo(unscaledWidth, unscaledHeight);
graphics.lineTo(unscaledWidth, vgtitle.height/2);
graphics.lineTo(vgtitle.x + vgtitle.width + 2, vgtitle.height/2);
}
public function get title():String {
return _title;
}
public function set title(value:String):void {
_title = value;
}
public function get pad():int {
return _pad;
}
public function set pad(value:int):void {
_pad = value;
}
public function get pos():int {
return _pos;
}
public function set pos(value:int):void {
_pos = value;
}
}
}
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