inabox/InABox.Core/DigitalForms/Layouts/Controls/DFLayoutLabel/DFLayoutTextStyle.cs

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Text;

namespace InABox.Core
{
    public enum UnderlineType
    {
        None,
        Single,
        Double
    }

    public class DFLayoutTextStyle : EnclosedEntity
    {
        [EditorSequence(0)]
        [CheckBoxEditor]
        public bool IsItalic { get; set; }

        [EditorSequence(1)]
        [CheckBoxEditor]
        public bool IsBold { get; set; }

        [EditorSequence(2)]
        [EnumLookupEditor(typeof(UnderlineType))]
        public UnderlineType Underline { get; set; }

        [EditorSequence(3)]
        [DoubleEditor(Caption = "Font size in points. Set to 0 for the default size.")]
        public double FontSize { get; set; }

        [EditorSequence(4)]
        [ColorEditor]
        public string Foreground { get; set; }

        [EditorSequence(5)]
        [ColorEditor]
        public string Background { get; set; }

        [JsonIgnore]
        [NullEditor]
        public Color ForegroundColour { get => GetForegroundColour(); set => SetForegroundColour(value); }

        [JsonIgnore]
        [NullEditor]
        public Color BackgroundColour { get => GetBackgroundColour(); set => SetBackgroundColour(value); }

        protected override void Init()
        {
            base.Init();
            IsItalic = false;
            IsBold = false;
            Underline = UnderlineType.None;
            Foreground = "";
            Background = "";
            FontSize = 0;
        }

        public Color GetForegroundColour() => ColourFromString(Foreground);
        public Color GetBackgroundColour() => ColourFromString(Background);

        public string SetForegroundColour(Color colour) => Foreground = ColourToString(colour);
        public string SetBackgroundColour(Color colour) => Background = ColourToString(colour);

        public static Color ColourFromString(string colour) => string.IsNullOrWhiteSpace(colour)
            ? Color.Empty
            : DFLayoutUtils.ConvertObjectToColour(colour) ?? Color.Empty;

        public static string ColourToString(Color colour) => colour == Color.Empty
            ? ""
            : colour.IsKnownColor ? colour.ToString() : $"#{colour.ToArgb():X4}";
    }
}