From 2fc458479e289e5157864f3ed817bba179461e2d Mon Sep 17 00:00:00 2001
From: Roeland Jago Douma <rullzer@owncloud.com>
Date: Tue, 22 Dec 2015 11:07:33 +0100
Subject: [PATCH] [Avatars] Calculate 'sane' hue precissions
We used to get the numeric value of the entrire md5 string which is a
128bit integer. We would then devide this by the maxval of a 128bit int.
There is no need for such huge computations. As we just require a value
between 0 and 255. Thus using two 16 bit values is more than enough to
get the precision we need. By just taking the MSB we get nearly
identical results.
---
core/js/placeholder.js | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/core/js/placeholder.js b/core/js/placeholder.js
index 26eb3507d7b..5fb5b5b8f80 100644
--- a/core/js/placeholder.js
+++ b/core/js/placeholder.js
@@ -51,8 +51,8 @@
// set optional argument "text" to value of "seed" if undefined
text = text || seed;
- var hash = md5(seed),
- maxRange = parseInt('ffffffffffffffffffffffffffffffff', 16),
+ var hash = md5(seed).substring(0, 4),
+ maxRange = parseInt('ffff', 16),
hue = parseInt(hash, 16) / maxRange * 256,
height = this.height() || size || 32;
this.css('background-color', 'hsl(' + hue + ', 90%, 65%)');
--
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