Theme.cs

/*
 * NanoXLSX is a small .NET library to generate and read XLSX (Microsoft Excel 2007 or newer) files in an easy and native way
 * Copyright Raphael Stoeckli © 2025
 * This library is licensed under the MIT License.
 * You find a copy of the license in project folder or on: http://opensource.org/licenses/MIT
 */
 
using System.Collections.Generic;
using NanoXLSX.Colors;
 
namespace NanoXLSX.Themes
{
    public class Theme
    {
 
        #region constants
        public const string DefaultThemeVersion = "166925";
 
        #endregion
 
        #region enums
        public enum ColorSchemeElement
        {
            Dark1 = 0,
            Light1 = 1,
            Dark2 = 2,
            Light2 = 3,
            Accent1 = 4,
            Accent2 = 5,
            Accent3 = 6,
            Accent4 = 7,
            Accent5 = 8,
            Accent6 = 9,
            Hyperlink = 10,
            FollowedHyperlink = 11
        }
        #endregion

        public string Name { get; set; }
        public ColorScheme Colors { get; set; }

        public bool DefaultTheme { get; private set; }

        public Theme(string name)
        {
            this.Name = name;
            this.Colors = GetDefaultColorScheme();
        }
 

        internal static Theme GetDefaultTheme()
        {
            Theme theme = new Theme("default")
            {
                DefaultTheme = true
            };
            ColorScheme colors = GetDefaultColorScheme();
            theme.Colors = colors;
            return theme;
        }

        internal static ColorScheme GetDefaultColorScheme()
        {
            ColorScheme colors = new ColorScheme
            {
                Name = "default",
                Dark1 = new SystemColor(SystemColor.Value.WindowText),
                Light1 = new SystemColor(SystemColor.Value.Window, "FFFFFF"),
                Dark2 = new SrgbColor("44546A"),
                Light2 = new SrgbColor("E7E6E6"),
                Accent1 = new SrgbColor("4472C4"),
                Accent2 = new SrgbColor("ED7D31"),
                Accent3 = new SrgbColor("A5A5A5"),
                Accent4 = new SrgbColor("FFC000"),
                Accent5 = new SrgbColor("5B9BD5"),
                Accent6 = new SrgbColor("70AD47"),
                Hyperlink = new SrgbColor("0563C1"),
                FollowedHyperlink = new SrgbColor("954F72")
            };
            return colors;
        }

        public override bool Equals(object obj)
        {
            return obj is Theme theme &&
                   Name == theme.Name &&
                   EqualityComparer<ColorScheme>.Default.Equals(Colors, theme.Colors);
        }

        public override int GetHashCode()
        {
            unchecked
            {
                int hashCode = 1172093127;
                hashCode = hashCode * -1521134295 + EqualityComparer<string>.Default.GetHashCode(Name);
                hashCode = hashCode * -1521134295 + EqualityComparer<ColorScheme>.Default.GetHashCode(Colors);
                return hashCode;
            }
        }
    }
}