st/settings: Add API to inhibit animations

There may be situations where we shouldn't enable animations. Make it
possible for the Shell to decide when there are such situations and in
when needed inhibit animations.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/757

diff --git a/src/st/st-settings.c b/src/st/st-settings.c
index d0fef040ab1304e041598cc1fedf13b3a087ab45..5ce73d015347d2d39438633d40356ccb745b386e 100644 (file)
--- a/src/st/st-settings.c
+++ b/src/st/st-settings.c
@@ -60,6 +60,7 @@ struct _StSettings
   gchar *font_name;
   gchar *gtk_theme;
   gchar *gtk_icon_theme;
+  int inhibit_animations_count;
   gboolean enable_animations;
   gboolean primary_paste;
   gboolean magnifier_active;
@@ -82,6 +83,41 @@ st_settings_set_slow_down_factor (StSettings *settings,
   g_object_notify_by_pspec (G_OBJECT (settings), props[PROP_SLOW_DOWN_FACTOR]);
 }
 
+static gboolean
+get_enable_animations (StSettings *settings)
+{
+  if (settings->inhibit_animations_count > 0)
+    return FALSE;
+  else
+    return settings->enable_animations;
+}
+
+void
+st_settings_inhibit_animations (StSettings *settings)
+{
+  gboolean enable_animations;
+
+  enable_animations = get_enable_animations (settings);
+  settings->inhibit_animations_count++;
+
+  if (enable_animations != get_enable_animations (settings))
+    g_object_notify_by_pspec (G_OBJECT (settings),
+                              props[PROP_ENABLE_ANIMATIONS]);
+}
+
+void
+st_settings_uninhibit_animations (StSettings *settings)
+{
+  gboolean enable_animations;
+
+  enable_animations = get_enable_animations (settings);
+  settings->inhibit_animations_count--;
+
+  if (enable_animations != get_enable_animations (settings))
+    g_object_notify_by_pspec (G_OBJECT (settings),
+                              props[PROP_ENABLE_ANIMATIONS]);
+}
+
 static void
 st_settings_finalize (GObject *object)
 {
@@ -126,7 +162,7 @@ st_settings_get_property (GObject    *object,
   switch (prop_id)
     {
     case PROP_ENABLE_ANIMATIONS:
-      g_value_set_boolean (value, settings->enable_animations);
+      g_value_set_boolean (value, get_enable_animations (settings));
       break;
     case PROP_PRIMARY_PASTE:
       g_value_set_boolean (value, settings->primary_paste);

diff --git a/src/st/st-settings.h b/src/st/st-settings.h
index c2c4fa23e06252469395ec00ef0456531009e814..8b25494699596e3dd4e7afb1453878fb56d24c1c 100644 (file)
--- a/src/st/st-settings.h
+++ b/src/st/st-settings.h
@@ -33,6 +33,10 @@ G_DECLARE_FINAL_TYPE (StSettings, st_settings, ST, SETTINGS, GObject)
 
 StSettings * st_settings_get (void);
 
+void st_settings_inhibit_animations (StSettings *settings);
+
+void st_settings_uninhibit_animations (StSettings *settings);
+
 G_END_DECLS
 
 #endif /* __ST_SETTINGS_H__ */