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Readable coloring for calendar events.

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This commit is contained in:
Burak Kaan Köse
2024-12-30 01:15:06 +01:00
parent 332f2ab89f
commit bb56815210
2 changed files with 37 additions and 1 deletions
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32
Wino.Core.UWP/Helpers/XamlHelpers.cs
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@@ -1,4 +1,5 @@
using System;
using System.Globalization;
using System.Linq;
using Microsoft.Toolkit.Uwp.Helpers;
using Microsoft.UI.Xaml.Controls;
@@ -42,6 +43,37 @@ namespace Wino.Helpers
};
}
public static SolidColorBrush GetReadableTextColor(string backgroundColor)
{
if (!backgroundColor.StartsWith("#")) throw new ArgumentException("Hex color must start with #.");
backgroundColor = backgroundColor.TrimStart('#');
if (backgroundColor.Length == 6)
{
var r = int.Parse(backgroundColor.Substring(0, 2), NumberStyles.HexNumber);
var g = int.Parse(backgroundColor.Substring(2, 2), NumberStyles.HexNumber);
var b = int.Parse(backgroundColor.Substring(4, 2), NumberStyles.HexNumber);
// Calculate relative luminance
double luminance = (0.2126 * GetLinearValue(r)) +
(0.7152 * GetLinearValue(g)) +
(0.0722 * GetLinearValue(b));
return luminance > 0.5 ? new SolidColorBrush(Colors.Black) : new SolidColorBrush(Colors.White);
}
else
{
throw new ArgumentException("Hex color must be 6 characters long (e.g., #RRGGBB).");
}
}
private static double GetLinearValue(int colorComponent)
{
double sRGB = colorComponent / 255.0;
return sRGB <= 0.03928 ? sRGB / 12.92 : Math.Pow((sRGB + 0.055) / 1.055, 2.4);
}
public static Microsoft.UI.Xaml.Controls.NavigationViewDisplayMode NavigationViewDisplayModeConverter(SplitViewDisplayMode splitViewDisplayMode)
{
return splitViewDisplayMode switch