[dconf-editor] Make sidebar (min) width grow with font size.

[Arnaud Bonatti <arnaudb src gnome org>]

commit 9f4be9ae792b842058b96a7459281b41987ffc56
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Fri Mar 11 16:07:53 2016 +0100

    Make sidebar (min) width grow with font size.

 editor/dconf-editor.css           |   20 ++++++++++++++++++++
 editor/dconf-editor.gresource.xml |    1 +
 editor/dconf-editor.ui            |    4 +++-
 editor/dconf-editor.vala          |    4 ++++
 4 files changed, 28 insertions(+), 1 deletions(-)
---
diff --git a/editor/dconf-editor.css b/editor/dconf-editor.css
new file mode 100644
index 0000000..8a286e9
--- /dev/null
+++ b/editor/dconf-editor.css
@@ -0,0 +1,20 @@
+/*
+  This file is part of Dconf Editor
+
+  Dconf Editor is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Dconf Editor is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with Dconf Editor.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+scrolledwindow.sidebar {
+  min-width:15em;
+}
diff --git a/editor/dconf-editor.gresource.xml b/editor/dconf-editor.gresource.xml
index d2bc774..005978a 100644
--- a/editor/dconf-editor.gresource.xml
+++ b/editor/dconf-editor.gresource.xml
@@ -3,6 +3,7 @@
   <gresource prefix="/ca/desrt/dconf-editor/ui">
     <file preprocess="xml-stripblanks">bookmark.ui</file>
     <file preprocess="xml-stripblanks">bookmarks.ui</file>
+    <file>dconf-editor.css</file>
     <file preprocess="xml-stripblanks">dconf-editor.ui</file>
     <file preprocess="xml-stripblanks">key-list-box-row.ui</file>
     <file preprocess="xml-stripblanks">key-editor.ui</file>
diff --git a/editor/dconf-editor.ui b/editor/dconf-editor.ui
index e3eed95..b735799 100644
--- a/editor/dconf-editor.ui
+++ b/editor/dconf-editor.ui
@@ -143,7 +143,9 @@
               <object class="GtkScrolledWindow">
                 <property name="visible">True</property>
                 <property name="hscrollbar-policy">never</property>
-                <property name="width-request">222</property>
+                <style>
+                  <class name="sidebar"/>
+                </style>
                 <child>
                   <object class="GtkTreeView" id="dir_tree_view">
                     <property name="visible">True</property>
diff --git a/editor/dconf-editor.vala b/editor/dconf-editor.vala
index 82a5f8c..856f83d 100644
--- a/editor/dconf-editor.vala
+++ b/editor/dconf-editor.vala
@@ -75,6 +75,10 @@ class ConfigurationEditor : Gtk.Application
 
         add_action_entries (action_entries, this);
 
+        Gtk.CssProvider css_provider = new Gtk.CssProvider ();
+        css_provider.load_from_resource ("/ca/desrt/dconf-editor/ui/dconf-editor.css");
+        Gtk.StyleContext.add_provider_for_screen (Gdk.Screen.get_default (), css_provider, 
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
+
         add_window (new DConfWindow ());
     }