[gnome-panel] libpanel-applet: add panel_applet_add_text_class

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 4ff1e39813081c34b38a31945ce447d212bde8f4
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Oct 8 15:18:59 2016 +0300

    libpanel-applet: add panel_applet_add_text_class

 libpanel-applet/panel-applet.c |   21 +++++++++++++++++++++
 libpanel-applet/panel-applet.h |    3 +++
 2 files changed, 24 insertions(+), 0 deletions(-)
---
diff --git a/libpanel-applet/panel-applet.c b/libpanel-applet/panel-applet.c
index 4cd1838..1a6ffcb 100644
--- a/libpanel-applet/panel-applet.c
+++ b/libpanel-applet/panel-applet.c
@@ -414,6 +414,27 @@ panel_applet_get_gtk_orientation (PanelApplet *applet)
        return GTK_ORIENTATION_HORIZONTAL;
 }
 
+/**
+ * panel_applet_add_text_class:
+ * @applet: a #PanelApplet
+ * @widget: a #GtkWidget
+ *
+ * Use this function to add css class to widgets that are visible on panel
+ * and shows text.
+ *
+ * Since: 3.22
+ */
+void
+panel_applet_add_text_class (PanelApplet *applet,
+                             GtkWidget   *widget)
+{
+  GtkStyleContext *context;
+
+  context = gtk_widget_get_style_context (widget);
+
+  gtk_style_context_add_class (context, "gp-text-color");
+}
+
 /* Applets cannot set their orientation, so API is not public. */
 static void
 panel_applet_set_orient (PanelApplet      *applet,
diff --git a/libpanel-applet/panel-applet.h b/libpanel-applet/panel-applet.h
index a970fd1..e41989d 100644
--- a/libpanel-applet/panel-applet.h
+++ b/libpanel-applet/panel-applet.h
@@ -164,6 +164,9 @@ GType              panel_applet_get_type             (void) G_GNUC_CONST;
 PanelAppletOrient  panel_applet_get_orient           (PanelApplet *applet);
 GtkOrientation     panel_applet_get_gtk_orientation  (PanelApplet *applet);
 
+void               panel_applet_add_text_class       (PanelApplet *applet,
+                                                      GtkWidget   *widget);
+
 GSettings         *panel_applet_settings_new         (PanelApplet *applet,
                                                      const char  *schema);