gistfile1.txt

using System;
using MonoTouch.UIKit;
using System.Drawing;
using MonoTouch.AudioToolbox;

namespace GoogleMusic
{
	public class LevelMeter : UIView
	{
		public AudioQueueLevelMeterState[] AudioLevelState {get;set;}
		public LevelMeter (RectangleF rect ) :base (rect)
		{
			Padding = 10;
			this.Alpha = .8f;
		}
		public float Padding {get;set;}
		public override void Draw (RectangleF rect)
		{
			if(AudioLevelState == null || AudioLevelState.Length == 0)
			{
				base.Draw(rect);
				return;
			}
			
			var width = (this.Frame.Width - (Padding * 2))/2;// AudioLevelState.Length;
			var height = (this.Frame.Height - (Padding * 2));
			var curX = Padding;
			var curY = Padding + height;
			UIColor.White.SetColor();
			
			var context = UIGraphics.GetCurrentContext();
			context.ClearRect(this.Bounds);
			context.SetFillColorWithColor(UIColor.Green.CGColor);
			
			int index = 0;
			foreach(var level in AudioLevelState)
			{
				if(index > 1)
					continue;
				var power = level.AveragePower;
				if(power > 1)
					power = 1;
				else if(power < 0 )
					power = 0;
				context.FillRect(new RectangleF(curX,curY,(width -  2),(height -2) * power * -1));
				curX += width;
				index ++;
			}
			
			//context.FillRect(new RectangleF(curX,curY,(width - Padding) * AudioLevelState[0].AveragePower,height -2));
			//curY += height;
			//context.FillRect(new RectangleF(curX,curY,(width - Padding) * AudioLevelState[1].AveragePower,height -2));
			context.Flush();
		}
	}
}