[gnome-control-center] background: Remove GdkColor deprecation warnings

[Robert Ancell <rancell src gnome org>]

commit ed03e9c49faafba132ab4077daeaf213b541aed7
Author: Robert Ancell <robert ancell canonical com>
Date:   Tue Sep 26 14:12:13 2017 -0400

    background: Remove GdkColor deprecation warnings
    
    https://bugzilla.gnome.org/show_bug.cgi?id=788205

 meson.build                            |    2 +-
 panels/background/cc-background-item.c |   19 ++++++++++---------
 2 files changed, 11 insertions(+), 10 deletions(-)
---
diff --git a/meson.build b/meson.build
index 9e48d16..02eb6e2 100644
--- a/meson.build
+++ b/meson.build
@@ -105,7 +105,7 @@ colord_dep = dependency('colord', version: '>= 0.1.34')
 gdk_pixbuf_dep = dependency('gdk-pixbuf-2.0', version: '>= 2.23.0')
 gio_dep = dependency('gio-2.0')
 glib_dep = dependency('glib-2.0', version: '>= 2.53.0')
-gnome_desktop_dep = dependency('gnome-desktop-3.0', version: '>= 3.1.0')
+gnome_desktop_dep = dependency('gnome-desktop-3.0', version: '>= 3.27.3')
 gnome_settings_dep = dependency('gnome-settings-daemon', version: '>= 3.25.90')
 goa_dep = dependency('goa-1.0', version: goa_req_version)
 gsettings_desktop_dep = dependency('gsettings-desktop-schemas', version: '>= 3.27.2')
diff --git a/panels/background/cc-background-item.c b/panels/background/cc-background-item.c
index accf2ed..13c6583 100644
--- a/panels/background/cc-background-item.c
+++ b/panels/background/cc-background-item.c
@@ -141,8 +141,9 @@ get_emblemed_pixbuf (CcBackgroundItem *item, GdkPixbuf *pixbuf, gint scale_facto
 static void
 set_bg_properties (CcBackgroundItem *item)
 {
-        GdkColor pcolor = { 0, 0, 0, 0 };
-        GdkColor scolor = { 0, 0, 0, 0 };
+        GdkRGBA pcolor = { 0, 0, 0, 0 };
+        GdkRGBA scolor = { 0, 0, 0, 0 };
+        GdkColor p, s;
 
         if (item->uri) {
                g_autoptr(GFile) file = NULL;
@@ -154,13 +155,13 @@ set_bg_properties (CcBackgroundItem *item)
        }
 
         if (item->primary_color != NULL) {
-                gdk_color_parse (item->primary_color, &pcolor);
+                gdk_rgba_parse (&pcolor, item->primary_color);
         }
         if (item->secondary_color != NULL) {
-                gdk_color_parse (item->secondary_color, &scolor);
+                gdk_rgba_parse (&scolor, item->secondary_color);
         }
 
-        gnome_bg_set_color (item->bg, item->shading, &pcolor, &scolor);
+        gnome_bg_set_rgba (item->bg, item->shading, &pcolor, &scolor);
         gnome_bg_set_placement (item->bg, item->placement);
 }
 
@@ -969,12 +970,12 @@ static gboolean
 colors_equal (const char *a,
              const char *b)
 {
-       GdkColor color1, color2;
+       GdkRGBA color1, color2;
 
-       gdk_color_parse (a, &color1);
-       gdk_color_parse (b, &color2);
+       gdk_rgba_parse (&color1, a);
+       gdk_rgba_parse (&color2, b);
 
-       return gdk_color_equal (&color1, &color2);
+       return gdk_rgba_equal (&color1, &color2);
 }
 
 gboolean