[polari] chatView: Make sure active and inactive nicks use distinct colors

[Florian Müllner <fmuellner src gnome org>]

commit 0df771dc13ff5a2a39ed4f953631459831f25cae
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue Jul 28 21:45:04 2015 +0200

    chatView: Make sure active and inactive nicks use distinct colors
    
    Commit c96929c701 introduced different styling for active and inactive
    nicks. However simply desaturating the theme's link color will not
    result in a different color if the original color was already a shade
    of gray (for instance when using the High Contrast theme).
    To address this, dim the inactive-nick color via its alpha channel in
    that case.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=752968

 src/chatView.js |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/chatView.js b/src/chatView.js
index a3ea51a..72b79b3 100644
--- a/src/chatView.js
+++ b/src/chatView.js
@@ -211,6 +211,8 @@ const ChatView = new Lang.Class({
                                                   green: desaturatedNickColor,
                                                   blue: desaturatedNickColor,
                                                   alpha: 1.0 });
+        if (this._activeNickColor.equal(this._inactiveNickColor))
+            this._inactiveNickColor.alpha = 0.5;
 
         let buffer = this._view.get_buffer();
         let tagTable = buffer.get_tag_table();