TheXamlGuy
45 lines
1.4 KiB
C#
45 lines
1.4 KiB
C#
using Avalonia.Media;
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using System.Security.Cryptography;
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using System.Text;
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namespace Toolkit.UI.Controls.Avalonia;
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public class PersonPictureColourGenerator
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{
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private readonly string[] colours =
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[
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"#FFB900", "#E81123", "#0078D7", "#0099BC", "#7A7574",
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"#767676", "#FF8C00", "#E81123", "#0063B1", "#2D7D9A",
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"#5D5A58", "#4C4A48", "#F7630C", "#EA005E", "#8E8CD8",
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"#0078D7", "#68768A", "#69797E", "#CA5010", "#C30052",
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"#6B69D6", "#038387", "#515C6B", "#4A5459", "#DA3B01",
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"#E3008C", "#8764B8", "#00B294", "#567C73", "#647C64"
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];
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public Color GenerateColour(string input)
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{
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byte[] hashBytes = GetHash(input);
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int colourIndex = BitConverter.ToInt32(hashBytes, 0) % colours.Length;
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colourIndex = Math.Abs(colourIndex);
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return HexToColour(colours[colourIndex]);
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}
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private byte[] GetHash(string input)
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{
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return SHA256.HashData(Encoding.UTF8.GetBytes(input));
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}
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private Color HexToColour(string hex)
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{
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hex = hex.Replace("#", string.Empty);
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byte a = 255;
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byte r = byte.Parse(hex.Substring(0, 2), System.Globalization.NumberStyles.HexNumber);
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byte g = byte.Parse(hex.Substring(2, 2), System.Globalization.NumberStyles.HexNumber);
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byte b = byte.Parse(hex.Substring(4, 2), System.Globalization.NumberStyles.HexNumber);
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return Color.FromArgb(a, r, g, b);
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}
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}
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