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Gradient Background Class

/ Published in: ActionScript 3
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  1. /**
  2.  *
  3.  * Gradient Background
  4.  * 
  5.  * usage: var myBg =new GradientBackground(100,100,0xffffff,0x000000,4,1);
  6.  
  7.  * params: width, height, top color, bottom color, corner radius, alpha 
  8.  
  9.  * 
  10.  * @author Chuckanucka 
  11.  * @version1.0
  12.  
  13.  **/
  14.  
  15. package com.chuck.effects{
  16.  
  17. 	// import needed classes 
  18. 	import flash.display.MovieClip;
  19. 	import flash.display.Graphics;
  20. 	import flash.display.GradientType;
  21. 	import flash.display.SpreadMethod;
  22. 	import flash.geom.*;
  23.  
  24.  
  25. 	public class GradientBackground extends MovieClip {
  26.  
  27. 		public function GradientBackground(bgWidth:Number,bgHeight:Number,topColor:Number=0xffffff,bottomColor:Number=0x000000,cornerRadius:Number=0,bgAlpha:Number=1) {
  28. 			// gradient defaults 
  29. 			var gradType:String=GradientType.LINEAR;
  30. 			var gradAlphas:Array=[1,1];
  31. 			var gradRatios:Array=[0,255];
  32. 			var sprMethod:String=SpreadMethod.PAD;
  33. 			var gradColors:Array;
  34.  
  35. 			gradColors=[topColor,bottomColor];
  36. 			var gradMatrix:Matrix=new Matrix  ;
  37. 			gradMatrix.createGradientBox(bgWidth,bgHeight,Math.PI/180*90,0,0);
  38. 			var newBg:MovieClip=new MovieClip  ;
  39. 			var newGraphic:Graphics=newBg.graphics;   
  40. 			newGraphic.beginGradientFill(gradType,gradColors,gradAlphas,gradRatios,gradMatrix,sprMethod);
  41. 			newGraphic.drawRoundRect(0,0,bgWidth,bgHeight,cornerRadius);
  42. 			newBg.alpha = bgAlpha
  43. 			addChild(newBg);
  44. 		}
  45. 	}
  46. }

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