IMotionSettings.cs

using System;
 
namespace NeuroAccessMaui.Animations
{
    public interface IMotionSettings
    {
        event EventHandler? MotionSettingsChanged;
 
        bool ReduceMotion { get; }
 
        double DurationScale { get; }
 
        void Update(bool ReduceMotion, double DurationScale);
    }
 
    public sealed class MotionSettings : IMotionSettings
    {
        private bool reduceMotion;
        private double durationScale = 1.0;
 
        public event EventHandler? MotionSettingsChanged;
 
        public bool ReduceMotion => this.reduceMotion;
 
        public double DurationScale => this.durationScale;
 
        public void Update(bool ReduceMotion, double DurationScale)
        {
            if (DurationScale <= 0)
                throw new ArgumentOutOfRangeException(nameof(DurationScale), "Duration scale must be greater than zero.");
 
            bool ReduceMotionChanged = this.reduceMotion != ReduceMotion;
            bool DurationChanged = Math.Abs(this.durationScale - DurationScale) > double.Epsilon;
 
            if (!ReduceMotionChanged && !DurationChanged)
                return;
 
            this.reduceMotion = ReduceMotion;
            this.durationScale = DurationScale;
 
            this.MotionSettingsChanged?.Invoke(this, EventArgs.Empty);
        }
    }
}