settings: on alpha window change keep on top.

When changing window alpha ensure the settings window
remains on top. Previously an alpha change would lose
the settings window when enabling alpha. Also add
some documentation.

src/bin/edi_main.c

@@ -1340,6 +1340,14 @@ _edi_exit(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info
    edi_close();
 }
 
+static void
+_edi_focused_cb(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
+{
+   Evas_Object *win = edi_settings_win_get();
+   if (win)
+     elm_win_raise(win);
+}
+
 static void
 _edi_resize_cb(void *data EINA_UNUSED, Evas *e EINA_UNUSED, Evas_Object *obj,
                            void *event_info EINA_UNUSED)
@@ -1512,6 +1520,7 @@ edi_open(const char *inputpath)
    elm_win_focus_highlight_enabled_set(win, EINA_TRUE);
    evas_object_smart_callback_add(win, "delete,request", _edi_exit, NULL);
    evas_object_event_callback_add(win, EVAS_CALLBACK_RESIZE, _edi_resize_cb, NULL);
+   evas_object_smart_callback_add(win, "focused", _edi_focused_cb, NULL);
 
    table = elm_table_add(win);
    evas_object_size_hint_weight_set(table, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);

src/bin/screens/edi_screens.h

@@ -58,6 +58,22 @@ Evas_Object *edi_about_show(Evas_Object *mainwin);
  */
 Evas_Object *edi_settings_show(Evas_Object *mainwin);
 
+/**
+ * Return a pointer to the settings window.
+ *
+ * @return The object if it exists or NULL if not.
+ *
+ * @ingroup UI
+ */
+Evas_Object *edi_settings_win_get(void);
+
+/**
+ * Create the font selection settings widget.
+ *
+ * @param parent The parent object for the font selection widget.
+ *
+ * @ingroup UI
+ */
 void edi_settings_font_add(Evas_Object *parent);
 
 /**

src/bin/screens/edi_settings.c

@@ -13,6 +13,7 @@
 
 #include "edi_private.h"
 
+static Evas_Object *_edi_settings_win;
 static Elm_Object_Item *_edi_settings_display, *_edi_settings_builds,
                        *_edi_settings_behaviour, *_edi_settings_project;
 
@@ -21,6 +22,8 @@ static Elm_Object_Item *_edi_settings_display, *_edi_settings_builds,
 static void
 _edi_settings_exit(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
 {
+   _edi_settings_win = NULL;
+
    evas_object_del(data);
 }
 
@@ -819,13 +822,19 @@ _edi_settings_behaviour_create(Evas_Object *parent)
    return frame;
 }
 
+Evas_Object *
+edi_settings_win_get(void)
+{
+   return _edi_settings_win;
+}
+
 Evas_Object *
 edi_settings_show(Evas_Object *mainwin)
 {
    Evas_Object *win, *bg, *table, *naviframe, *tb;
    Elm_Object_Item *tb_it, *default_it;
 
-   win = elm_win_add(mainwin, "settings", ELM_WIN_BASIC);
+   _edi_settings_win = win = elm_win_add(mainwin, "settings", ELM_WIN_BASIC);
    if (!win) return NULL;
 
    elm_win_title_set(win, _("Edi Settings"));