From dd29914fcfe97975ce7145adc24cc556d67b83d2 Mon Sep 17 00:00:00 2001
From: Nicolas Dufour <nicoduf@yahoo.fr>
Date: Fri, 28 Feb 2014 14:56:31 +0100
Subject: Fix for Bug #1281859 (color gesture problems, alpha values below 0
 and above 1).

Fixed bugs:
  - https://launchpad.net/bugs/1281859

(bzr r13074)
---
 src/ui/widget/selected-style.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/ui/widget/selected-style.cpp')

diff --git a/src/ui/widget/selected-style.cpp b/src/ui/widget/selected-style.cpp
index d29554c41..042a6614e 100644
--- a/src/ui/widget/selected-style.cpp
+++ b/src/ui/widget/selected-style.cpp
@@ -1267,6 +1267,11 @@ RotateableSwatch::color_adjust(float *hsla, double by, guint32 cc, guint modifie
     } else if (modifier == 3) { // alpha
         double old = hsla[3];
         hsla[3] += by/2;
+        if (hsla[3] < 0) {
+            hsla[3] = 0;
+        } else if (hsla[3] > 1) {
+            hsla[3] = 1;
+        }
         diff = hsla[3] - old;
     } else { // hue
         double old = hsla[0];
-- 
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