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Diffstat (limited to '')
| -rw-r--r-- | src/main/java/de/pixart/messenger/utils/XEP0392Helper.java | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/utils/XEP0392Helper.java b/src/main/java/de/pixart/messenger/utils/XEP0392Helper.java new file mode 100644 index 000000000..bbfe50898 --- /dev/null +++ b/src/main/java/de/pixart/messenger/utils/XEP0392Helper.java @@ -0,0 +1,30 @@ +package de.pixart.messenger.utils; + +import android.graphics.Color; + +import org.hsluv.HUSLColorConverter; + +import java.security.MessageDigest; + +public class XEP0392Helper { + + private static double angle(String nickname) { + try { + MessageDigest sha1 = MessageDigest.getInstance("SHA-1"); + byte[] digest = sha1.digest(nickname.getBytes("UTF-8")); + int angle = ((int) (digest[0]) & 0xff) + ((int) (digest[1]) & 0xff) * 256; + return angle / 65536.; + } catch (Exception e) { + return 0.0; + } + } + + public static int rgbFromNick(String name) { + double[] hsluv = new double[3]; + hsluv[0] = angle(name) * 360; + hsluv[1] = 100; + hsluv[2] = 50; + double[] rgb = HUSLColorConverter.hsluvToRgb(hsluv); + 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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