samples/themes/zen/src/zen/skins/BorderSkin.mxml

<?xml version="1.0" encoding="utf-8"?>
<!--

  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

-->
<!--- The Spark skin class for the Halo Border base class. 

@langversion 3.0
@playerversion Flash 10
@playerversion AIR 1.5
@productversion Flex 4
-->
<s:Skin xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" 
						implements="mx.core.IRectangularBorder" mouseEnabled="false" mouseChildren="false">
	
	<fx:Script>
		<![CDATA[
			import mx.core.EdgeMetrics;
			import mx.core.IUIComponent;
			import mx.graphics.RectangularDropShadow;
			
			static private const metrics:EdgeMetrics = new EdgeMetrics(1, 1, 1, 1);
			
			[Bindable]
			public var cornerRadius:Number = 0;
			
			private var dropShadow:RectangularDropShadow;
			
			public function get borderMetrics():EdgeMetrics
			{
				if (getStyle("borderVisible") == false ||
					getStyle("borderStyle") == "none")
					return EdgeMetrics.EMPTY;
				
				return metrics;
			}
			
			public function get backgroundImageBounds():Rectangle
			{
				return null;
			}
			
			public function set backgroundImageBounds(value:Rectangle):void
			{
				
			}
			
			public function get hasBackgroundImage():Boolean
			{
				return false;
			}
			
			public function layoutBackgroundImage():void
			{
				
			}
						
			override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
			{
				// Force a redraw to clear any existing shadow, and to force a redraw of the 
				// border/background.
				redrawRequested = true;
				
				if (getStyle("borderVisible") == false || getStyle("borderStyle") == "none")
				{
					border.visible = false;
					background.left = background.top = background.right = background.bottom = 0;
				}
				else
				{
					border.visible = true;
					background.left = background.top = background.right = background.bottom = 1;
				}
				
				border.radiusX = cornerRadius;
				background.radiusX = cornerRadius;
				
				super.updateDisplayList(unscaledWidth, unscaledHeight);
				
				if (parent && parent is IUIComponent && !IUIComponent(parent).enabled)
					alpha = 0.5;
				else
					alpha = 1;
				
				// Draw drop shadow, if needed
				if (getStyle("dropShadowVisible") == false ||
					width == 0 || 
					height == 0)
				{
					return;
				}
				
				// Create a RectangularDropShadow object, set its properties,
				// and draw the shadow
				if (!dropShadow)
					dropShadow = new RectangularDropShadow();
				
				dropShadow.distance = 5;
				dropShadow.angle = 90;
				dropShadow.color = 0;
				dropShadow.alpha = 0.8;
				dropShadow.blurX = 20;
				dropShadow.blurY = 20;
				
				// Clear out any pending line style
				graphics.lineStyle();
				dropShadow.drawShadow(graphics, 0, 0, width, height);
			}
			
			private function getDropShadowAngle(distance:Number,
												direction:String):Number
			{
				if (direction == "left")
					return distance >= 0 ? 135 : 225;
					
				else if (direction == "right")
					return distance >= 0 ? 45 : 315;
					
				else // direction == "center"
					return distance >= 0 ? 90 : 270;
			}
		]]>
	</fx:Script>
	
	<!-- border --> 
	<s:Rect left="0" right="0" top="0" bottom="0" radiusX="0" id="border">
		<s:stroke>            
			<s:SolidColorStroke id="borderStroke" color="0x82826b"/>
		</s:stroke>
	</s:Rect>
	
	<!-- fill -->
	<s:Rect id="background" left="1" right="1" top="1" bottom="1" radiusX="0">
		<s:fill>
			<s:SolidColor id="bgFill" color="0xAAAA89" />
		</s:fill>
	</s:Rect>
</s:Skin>