32 lines
964 B
Java
32 lines
964 B
Java
package eu.siacs.conversations.utils;
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import android.graphics.Color;
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import android.util.Log;
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import org.hsluv.HUSLColorConverter;
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import java.security.MessageDigest;
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public class XEP0392Helper {
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private static double angle(String nickname) {
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try {
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MessageDigest sha1 = MessageDigest.getInstance("SHA-1");
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byte[] digest = sha1.digest(nickname.getBytes("UTF-8"));
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int angle = ((int) (digest[0]) & 0xff) + ((int) (digest[1]) & 0xff) * 256;
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return angle / 65536.;
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} catch (Exception e) {
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return 0.0;
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}
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}
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public static int rgbFromNick(String name) {
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double[] hsluv = new double[3];
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hsluv[0] = angle(name) * 360;
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hsluv[1] = 100;
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hsluv[2] = 50;
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double[] rgb = HUSLColorConverter.hsluvToRgb(hsluv);
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return Color.rgb((int) Math.round(rgb[0] * 255), (int) Math.round(rgb[1] * 255), (int) Math.round(rgb[2] * 255));
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}
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}
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