[gnome-calendar/gnome-3-28] event-widget: force squared color boxes

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit b29ac28c23c9cf75a1a55e4a4845d2156d4837e9
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Tue May 1 10:24:48 2018 -0300

    event-widget: force squared color boxes
    
    On HiDPI displays, the color boxes of timed events
    appear distorted and not squared.
    
    Fix that by setting a fixed size, and changing the
    box alignment to always shrink to a squared state.

 data/ui/event-widget.ui | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/data/ui/event-widget.ui b/data/ui/event-widget.ui
index f98b09ea..e75345c9 100644
--- a/data/ui/event-widget.ui
+++ b/data/ui/event-widget.ui
@@ -22,6 +22,10 @@
               <object class="GtkBox" id="color_box">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
+                <property name="halign">center</property>
+                <property name="valign">center</property>
+                <property name="width-request">16</property>
+                <property name="height-request">16</property>
                 <style>
                   <class name="icon-box" />
                 </style>