Microsoft Band Dimensions factory

BandDimensions.cs

using Microsoft.Band;
using Windows.UI.Xaml.Media.Imaging;

namespace App
{
    enum BandType
    {
        Band1,
        Band2
    }
    abstract class BandDimensions
    {
        public abstract short PageWidth { get; }
        public virtual short PageHeight { get; }

        public abstract byte RightEdgeWidth { get; }

        public virtual short MeTileWidth => 310;
        public abstract short MeTileHeight { get; }

        public abstract BandType BandType { get; }

        public abstract WriteableBitmap CreateTileBitmap();
        public virtual WriteableBitmap CreateSmallTileBitmap() => new WriteableBitmap(24, 24);

        public virtual short SmallLineHeight => 25;
    }

    class Band1Dimensions : BandDimensions
    {
        public override short PageWidth => 245;
        public override short PageHeight => 102;
        public override byte RightEdgeWidth => 35;
        public override short MeTileHeight => 102;

        public override BandType BandType => BandType.Band1;

        public override WriteableBitmap CreateTileBitmap() => new WriteableBitmap(46, 46);
    }

    class Band2Dimensions : BandDimensions
    {
        public override short PageWidth => 258;
        public override short PageHeight => 128;
        public override byte RightEdgeWidth => 22;
        public override short MeTileHeight => 128;

        public override BandType BandType => BandType.Band2;

        public override WriteableBitmap CreateTileBitmap() => new WriteableBitmap(48, 48);
    }

    static class BandDimensionsFactory
    {
        async public static System.Threading.Tasks.Task<BandDimensions> Create(IBandClient band)
        {
            var hwVersion = await band.GetHardwareVersionAsync();
            if (int.Parse(hwVersion) >= 20)
                return new Band2Dimensions();
            return new Band1Dimensions();
        }
    }
}