using System;
using System.Globalization;
using System.Windows.Data;

namespace VisionCommon {
    public class CoordUnitValueConverter : IValueConverter {
        private eCoordUnit _coordUnit;

        public CoordUnitValueConverter() {
            _coordUnit = VisionSettingManager.VisionSetting.CoordUnit;
        }

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
            var doubleValue = (double)value;
            if (_coordUnit == eCoordUnit.UM) {
                return MathUtil.ConvertUnitMilliToMicro(doubleValue);
            }
            return doubleValue;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
            string strValue = value.ToString();
            double doubleValue = 0;

            if (!Double.TryParse(strValue, out doubleValue)) {
                return 0;
            }

            if (_coordUnit == eCoordUnit.UM) {
                return MathUtil.ConvertUnitMicroToMilli(doubleValue);
            }

            return doubleValue;
        }

        public static double GetCoordUnitValue(double value) {
            if (VisionSettingManager.VisionSetting.CoordUnit == eCoordUnit.UM) {
                return MathUtil.ConvertUnitMilliToMicro(value);
            }

            return value;
        }

        public static string GetCoordUnitString(double value) {
            if (VisionSettingManager.VisionSetting.CoordUnit == eCoordUnit.UM) {
                return MathUtil.ConvertUnitMilliToMicro(value).ToString("F1");
            }
            return value.ToString("F4");
        }
    }
}