MSGHeaderAnalyzer/ThemeHelper.cs at master · AlsoBeltrix/MSGHeaderAnalyzer · GitHub

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using Microsoft.Win32;
using System;
using System.Windows;
using System.Windows.Media;

namespace EmailHeaderAnalyzer
{
    public static class ThemeHelper
    {
        public static bool IsWindowsInDarkMode()
        {
            try
            {
                using (var key = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Themes\Personalize"))
                {
                    if (key != null)
                    {
                        var value = key.GetValue("AppsUseLightTheme");
                        if (value != null)
                        {
                            return (int)value == 0; // 0 = dark mode, 1 = light mode
                        }
                    }
                }
            }
            catch
            {
                // If we can't read the registry, default to light mode
            }
            return false;
        }

        public static class LightTheme
        {
            public static readonly Color Background = Color.FromRgb(245, 245, 245);
            public static readonly Color WindowBackground = Colors.White;
            public static readonly Color BorderColor = Color.FromRgb(224, 224, 224);
            public static readonly Color TextColor = Color.FromRgb(50, 49, 48);
            public static readonly Color SecondaryTextColor = Color.FromRgb(96, 94, 92);
            public static readonly Color ButtonBackground = Color.FromRgb(0, 120, 212);
            public static readonly Color ButtonHoverBackground = Color.FromRgb(16, 110, 190);
            public static readonly Color SecondaryButtonBackground = Colors.White;
            public static readonly Color SecondaryButtonHoverBackground = Color.FromRgb(243, 242, 241);
            public static readonly Color SectionHeaderBackground = Color.FromRgb(0, 120, 212);
            public static readonly Color TableRowAltBackground = Color.FromRgb(250, 250, 250);
            public static readonly Color TableHeaderBackground = Color.FromRgb(240, 240, 240);
        }

        public static class DarkTheme
        {
            public static readonly Color Background = Color.FromRgb(32, 32, 32);
            public static readonly Color WindowBackground = Color.FromRgb(45, 45, 45);
            public static readonly Color BorderColor = Color.FromRgb(64, 64, 64);
            public static readonly Color TextColor = Color.FromRgb(240, 240, 240);
            public static readonly Color SecondaryTextColor = Color.FromRgb(200, 200, 200);
            public static readonly Color ButtonBackground = Color.FromRgb(0, 103, 192);
            public static readonly Color ButtonHoverBackground = Color.FromRgb(0, 90, 158);
            public static readonly Color SecondaryButtonBackground = Color.FromRgb(60, 60, 60);
            public static readonly Color SecondaryButtonHoverBackground = Color.FromRgb(80, 80, 80);
            public static readonly Color SectionHeaderBackground = Color.FromRgb(0, 90, 158);
            public static readonly Color TableRowAltBackground = Color.FromRgb(50, 50, 50);
            public static readonly Color TableHeaderBackground = Color.FromRgb(60, 60, 60);
        }

        public static void ApplyTheme(Window window, bool isDarkMode)
        {
            window.Background = new SolidColorBrush(isDarkMode ? DarkTheme.Background : LightTheme.Background);

            // Update resources dynamically
            window.Resources["ThemeBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.Background : LightTheme.Background);
            window.Resources["ThemeWindowBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.WindowBackground : LightTheme.WindowBackground);
            window.Resources["ThemeBorderColor"] = new SolidColorBrush(isDarkMode ? DarkTheme.BorderColor : LightTheme.BorderColor);
            window.Resources["ThemeTextColor"] = new SolidColorBrush(isDarkMode ? DarkTheme.TextColor : LightTheme.TextColor);
            window.Resources["ThemeSecondaryTextColor"] = new SolidColorBrush(isDarkMode ? DarkTheme.SecondaryTextColor : LightTheme.SecondaryTextColor);
            window.Resources["ThemeButtonBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.ButtonBackground : LightTheme.ButtonBackground);
            window.Resources["ThemeButtonHoverBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.ButtonHoverBackground : LightTheme.ButtonHoverBackground);
            window.Resources["ThemeSecondaryButtonBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.SecondaryButtonBackground : LightTheme.SecondaryButtonBackground);
            window.Resources["ThemeSecondaryButtonHoverBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.SecondaryButtonHoverBackground : LightTheme.SecondaryButtonHoverBackground);
            window.Resources["ThemeSectionHeaderBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.SectionHeaderBackground : LightTheme.SectionHeaderBackground);
            window.Resources["ThemeTableRowAltBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.TableRowAltBackground : LightTheme.TableRowAltBackground);
            window.Resources["ThemeTableHeaderBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.TableHeaderBackground : LightTheme.TableHeaderBackground);

            // Add additional resources for button states
            window.Resources["ThemeHoverBackground"] = new SolidColorBrush(isDarkMode ? DarkTheme.SecondaryButtonHoverBackground : LightTheme.SecondaryButtonHoverBackground);
            window.Resources["ThemePressedBackground"] = new SolidColorBrush(isDarkMode ? Color.FromRgb(50, 50, 50) : Color.FromRgb(225, 223, 221));
        }
    }
}