CircleDrawable

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.Graphics.Drawables;
using Android.Graphics;

namespace DSP.Droid
{
    public class CircleDrawable : Drawable
    {
        Bitmap bmp;
        BitmapShader bmpShader;
        Paint paint;
        RectF oval;

        public CircleDrawable(Bitmap bmp)
        {
            this.bmp = bmp;
            this.bmpShader = new BitmapShader(bmp, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
            this.paint = new Paint() { AntiAlias = true };
            this.paint.SetShader(bmpShader);
            this.oval = new RectF();
        }

        public override void Draw(Canvas canvas)
        {
            canvas.DrawOval(oval, paint);
        }

        protected override void OnBoundsChange(Rect bounds)
        {
            base.OnBoundsChange(bounds);
            oval.Set(0, 0, bounds.Width(), bounds.Height());
        }

        public override int IntrinsicWidth
        {
            get
            {
                return bmp.Width;
            }
        }

        public override int IntrinsicHeight
        {
            get
            {
                return bmp.Height;
            }
        }

        public override void SetAlpha(int alpha)
        {

        }

        public override int Opacity
        {
            get
            {
                return (int)Format.Opaque;
            }
        }

        public override void SetColorFilter(ColorFilter cf)
        {

        }
    }
}