feature/pgtk: [PATCH v2] Make reading GNOME settings optional

[Misha Gusarov]

* src/pgtkterm.c (pgtk_term_init):
Make reading GNOME settings optional.
---
 src/pgtkterm.c | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/src/pgtkterm.c b/src/pgtkterm.c
index 437249abeb..3fc0c6eb80 100644
--- a/src/pgtkterm.c
+++ b/src/pgtkterm.c
@@ -6798,6 +6798,26 @@ same_x_server (const char *name1, const char *name2)
          && (*name2 == '.' || *name2 == '\0'));
 }
 
+#define GNOME_INTERFACE_SCHEMA "org.gnome.desktop.interface"
+
+static gdouble pgtk_text_scaling_factor(void)
+{
+  GSettingsSchemaSource *schema_source = g_settings_schema_source_get_default 
();
+  if (schema_source != NULL)
+    {
+      GSettingsSchema *schema = g_settings_schema_source_lookup (schema_source,
+         GNOME_INTERFACE_SCHEMA, true);
+      if (schema != NULL)
+        {
+         g_settings_schema_unref (schema);
+         GSettings *set = g_settings_new (GNOME_INTERFACE_SCHEMA);
+         return g_settings_get_double (set, "text-scaling-factor");
+       }
+    }
+  return 1;
+}
+
+
 /* Open a connection to X display DISPLAY_NAME, and return
    the structure that describes the open display.
    If we cannot contact the display, return null.  */
@@ -6969,11 +6989,7 @@ pgtk_term_init (Lisp_Object display_name, char 
*resource_name)
   {
     GdkScreen *gscr = gdk_display_get_default_screen (dpyinfo->gdpy);
 
-    GSettings *set = g_settings_new ("org.gnome.desktop.interface");
-    gdouble x = g_settings_get_double (set, "text-scaling-factor");
-    gdouble dpi = 0;
-
-    dpi = 96.0 * x;
+    gdouble dpi = 96.0 * pgtk_text_scaling_factor();
     gdk_screen_set_resolution (gscr, dpi);
     dpyinfo->resx = dpi;
     dpyinfo->resy = dpi;
-- 
2.28.0