[gtk/gtk-3-24: 1/4] settings: Support loading float values from keyfiles

[Matthias Clasen <matthiasc src gnome org>]

commit 6c5489ab25554864d3d2e3a6792b238ef6b00637
Author: Sebastian Keller <skeller gnome org>
Date:   Wed Dec 16 18:37:08 2020 +0100

    settings: Support loading float values from keyfiles
    
    The gtk-cursor-aspect-ratio property got added as a float property.
    However there is no parser for float values from keyfiles which meant
    that it could not be changed from settings.ini.
    
    Fixes https://gitlab.gnome.org/GNOME/gtk/-/issues/3441

 gtk/gtksettings.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtksettings.c b/gtk/gtksettings.c
index 2e7c035705..22b1420472 100644
--- a/gtk/gtksettings.c
+++ b/gtk/gtksettings.c
@@ -2448,6 +2448,7 @@ gtk_settings_set_property_value_internal (GtkSettings            *settings,
   GQuark name_quark;
 
   if (!G_VALUE_HOLDS_LONG (&new_value->value) &&
+      !G_VALUE_HOLDS_FLOAT (&new_value->value) &&
       !G_VALUE_HOLDS_DOUBLE (&new_value->value) &&
       !G_VALUE_HOLDS_STRING (&new_value->value) &&
       !G_VALUE_HOLDS (&new_value->value, G_TYPE_GSTRING))
@@ -3443,14 +3444,20 @@ gtk_settings_load_from_key_file (GtkSettings       *settings,
             break;
           }
 
+        case G_TYPE_FLOAT:
         case G_TYPE_DOUBLE:
           {
             gdouble d_val;
 
-            g_value_init (&svalue.value, G_TYPE_DOUBLE);
+            g_value_init (&svalue.value, value_type);
             d_val = g_key_file_get_double (keyfile, "Settings", key, &error);
             if (!error)
-              g_value_set_double (&svalue.value, d_val);
+              {
+                if (value_type == G_TYPE_FLOAT)
+                  g_value_set_float (&svalue.value, (float) d_val);
+                else
+                  g_value_set_double (&svalue.value, d_val);
+              }
             break;
           }