Flex - 实现圆角TextInput RoundCornerTex
RoundCornerTextInputDemo.mxml?
<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:demo="demo.common.*" > <mx:Label text="TextInput"/> <mx:TextInput /> <mx:Label text="RoundCornerTextInput"/> <demo:RoundCornerTextInput cornerRadius="10" /> </mx:Application> RoundCornerTextInput.as package demo.common { import flash.display.DisplayObject; import flash.filters.DropShadowFilter; import mx.controls.TextInput; import mx.core.IFlexDisplayObject; [Style(name="icon", type="Class", inherit="no")] public class RoundCornerTextInput extends TextInput { private var _icon:IFlexDisplayObject; public function RoundCornerTextInput() { super(); this.setStyle("paddingTop", 2); this.filters = [new DropShadowFilter(2, 90, 0x000000, 0.6, 2, 2, 1, 1, true)]; } override protected function createBorder():void{ } override public function set height(value:Number):void{ super.height = value; if(_icon){ _icon.y = (this.height - _icon.height)/2; } if(textField){ this.setStyle("paddingTop" , (this.height - textField.height)/2); } } override protected function createChildren() : void{ super.createChildren(); createIcon(); } protected function createIcon():void{ if(!_icon){ var iconClass:Class = this.getStyle("icon"); if(iconClass!=null){ _icon = new iconClass(); addChild(DisplayObject(_icon)); _icon.y = (this.height - _icon.height)/2; invalidateDisplayList(); } } } override public function getStyle(styleProp:String):*{ var result:* = super.getStyle(styleProp); if(styleProp=="paddingLeft"){ if(!result){ return _icon ? _icon.width : super.getStyle("cornerRadius"); } } if(styleProp=="paddingRight"){ if(!result){ return super.getStyle("cornerRadius"); } } return result; } override public function styleChanged(styleProp:String):void{ var allStyles:Boolean = (styleProp == null || styleProp == "styleName"); super.styleChanged(styleProp); if(allStyles || styleProp == "icon"){ if(_icon){ removeChild(DisplayObject(_icon)); _icon = null; createIcon(); } } } override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void { this.graphics.clear(); var backgroundColor:uint = getStyle("backgroundColor"); var backgroundAlpha:Number = getStyle("backgroundAlpha"); var cornerRadius:Number = this.getStyle("cornerRadius"); this.graphics.lineStyle(); this.graphics.beginFill(backgroundColor, backgroundAlpha); this.drawRoundRect(0, 0, unscaledWidth, unscaledHeight, cornerRadius); super.updateDisplayList(unscaledWidth, unscaledHeight); } } }??