using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using RealTimeGraphEx.Models;
using RealTimeGraphEx.Enums;

namespace RealTimeGraphEx.FastGraphs
{
    public class RealTimeGraphExEllipseScroll : RealTimeGraphExLineScroll
    {
        #region Cross Thread Fields

        protected OpacityTypeEnum _opacityAnimationType;
        protected int _ellipseXRadius;
        protected int _ellipseYRadius;

        #endregion

        #region Constructors

        public RealTimeGraphExEllipseScroll()
            : base()
        {

        }

        #endregion

        #region Properties

        public OpacityTypeEnum OpacityAnimationType
        {
            get { return (OpacityTypeEnum)GetValue(OpacityAnimationTypeProperty); }
            set { SetValue(OpacityAnimationTypeProperty, value); }
        }
        public static readonly DependencyProperty OpacityAnimationTypeProperty =
            DependencyProperty.Register("OpacityAnimationType", typeof(OpacityTypeEnum), typeof(RealTimeGraphExEllipseScroll), new PropertyMetadata(OpacityTypeEnum.None, new PropertyChangedCallback(CrossModelChanged)));



        public int EllipseXRadius
        {
            get { return (int)GetValue(EllipseXRadiusProperty); }
            set { SetValue(EllipseXRadiusProperty, value); }
        }
        public static readonly DependencyProperty EllipseXRadiusProperty =
            DependencyProperty.Register("EllipseXRadius", typeof(int), typeof(RealTimeGraphExEllipseScroll), new PropertyMetadata(5));



        public int EllipseYRadius
        {
            get { return (int)GetValue(EllipseYRadiusProperty); }
            set { SetValue(EllipseYRadiusProperty, value); }
        }
        public static readonly DependencyProperty EllipseYRadiusProperty =
            DependencyProperty.Register("EllipseYRadius", typeof(int), typeof(RealTimeGraphExEllipseScroll), new PropertyMetadata(5));




        #endregion

        #region Override Methods

        protected override void OnSetCrossThreadFields()
        {
            base.OnSetCrossThreadFields();

            this.Dispatcher.Invoke(() =>
            {

                _opacityAnimationType = OpacityAnimationType;
                _ellipseXRadius = EllipseXRadius;
                _ellipseYRadius = EllipseYRadius;

            }, System.Windows.Threading.DispatcherPriority.Send);
        }

        /// <summary>
        /// Draw the actual polygon on the image.
        /// </summary>
        /// <param name="bmp"></param>
        protected override void OnDrawVisuals(WriteableBitmap bmp)
        {
            Color stroke = _graphController.dataSeries.GetStrokeColor() != null ? _graphController.dataSeries.GetStrokeColor().Value : _stroke;
            Color fill = _graphController.dataSeries.GetFillColor() != null ? _graphController.dataSeries.GetFillColor().Value : _fill;

            double scale = GetPolygonScaleFactor();

            for (int i = 0; i < graphPolygon.Count; i++)
            {
                var point = graphPolygon[i];

                Color processedLineColor = stroke;
                Color processedFillColor = fill;

                if (_opacityAnimationType == OpacityTypeEnum.FadeOut)
                {
                    byte opacity = (byte)((((i) * 100 / _maxPoints) * 255) / 100);

                    processedLineColor.A = opacity;
                    processedFillColor.A = opacity;
                }

                if (_fillGraph)
                {
                    bmp.FillEllipseCentered((int)(i * scale), (int)ConvertYToImageYFliped(point), _ellipseXRadius, _ellipseYRadius, processedFillColor);
                }

                bmp.DrawEllipseCentered((int)(i * scale), (int)ConvertYToImageYFliped(point), _ellipseXRadius, _ellipseYRadius, processedLineColor);
            }
        }

        #endregion
    }
}