TileList设置显示数据的行间距和列间距

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package com.ckfinder.show {                import flash.display.Graphics;         import flash.display.Sprite;               import mx.controls.TileList;         import mx.controls.listClasses.IListItemRenderer;         public class MyTileList extends TileList {                        [Bindable]             private var _verticalGap:Number = 0;                       [Bindable]             private var _horizontalGap:Number = 0;                       public function MyTileList() {                 super();             }             /**            * 重写鼠标划过高亮            * @indicator:Sprite            * @x:Number            * @y:Number            * @width:Number            * @height:Number            * @color:uint            * @itemRenderer:IListItemRenderer            * return void            * **/     override protected function drawHighlightIndicator(indicator:Sprite, x:Number, y:Number, width:Number, height:Number, color:uint, itemRenderer:IListItemRenderer):void {                 //绘图                 var g:Graphics = indicator.graphics;                               g.clear();                 g.beginFill(color);                         // g.drawEllipse(0, 0, width - _horizontalGap, height - _verticalGap);      //画椭圆                 g.drawRect(0, 0, width - _horizontalGap, height - _verticalGap);       //画矩形              g.endFill();                               indicator.x = x;                 indicator.y = y;             }                              /**            * 重写选中高亮            * **/    override protected function drawSelectionIndicator(indicator:Sprite, x:Number, y:Number, width:Number, height:Number, color:uint, itemRenderer:IListItemRenderer):void {                 //绘图                 var g:Graphics = indicator.graphics;                               g.clear();                 g.beginFill(color);                 // g.drawEllipse(0, 0, width - _horizontalGap, height - _verticalGap);        //画椭圆                 g.drawRect(0, 0, width - _horizontalGap, height - _verticalGap);       //画矩形              g.endFill();                     indicator.x = x;                 indicator.y = y;             }                       //=============================            //  set and get             //=============================             public function set verticalGap(value:Number):void {                 _verticalGap = value;             }                       public function get verticalGap():Number {                 return _verticalGap;             }                 public function set horizontalGap(value:Number):void {                 _horizontalGap = value;             }             public function get horizontalGap():Number {                 return _horizontalGap;             }         }     }
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