elementary: Add user setting for icon theme

Beginning of the icon lookup rework.
The library will now store user preference for
the icon theme to use.

src/lib/elementary/elementary_config.h

@@ -1,3 +1,11 @@
 #ifdef HAVE_CONFIG_H
 # include "config.h"
 #endif
+
+/**
+ * @file
+ * @brief Definition of special values for user configuration.
+ */
+
+#define ELM_CONFIG_ICON_THEME_ELEMENTARY "_Elementary_Icon_Theme"
+

src/lib/elementary/elm_config.c

@@ -500,6 +500,7 @@ _desc_init(void)
    ELM_CONFIG_VAL(D, T, popup_horizontal_align, T_DOUBLE);
    ELM_CONFIG_VAL(D, T, popup_vertical_align, T_DOUBLE);
    ELM_CONFIG_VAL(D, T, spinner_min_max_filter_enable, T_UCHAR);
+   ELM_CONFIG_VAL(D, T, icon_theme, T_STRING);
 #undef T
 #undef D
 #undef T_INT
@@ -1823,6 +1824,7 @@ _config_load(void)
    _elm_config->naviframe_prev_btn_auto_pushed = EINA_TRUE;
    _elm_config->popup_horizontal_align = 0.5;
    _elm_config->popup_vertical_align = 0.5;
+   _elm_config->icon_theme = eina_stringshare_add(ELM_CONFIG_ICON_THEME_ELEMENTARY);
 }
 
 static void
@@ -2166,6 +2168,10 @@ _config_update(void)
    IFCFG(0x0009)
    _elm_config->scroll_accel_factor = 7.0;
    IFCFGEND
+
+   IFCFG(0x000a)
+   _elm_config->icon_theme = eina_stringshare_add(ELM_CONFIG_ICON_THEME_ELEMENTARY);
+   IFCFGEND
    /**
     * Fix user config for current ELM_CONFIG_EPOCH here.
     **/
@@ -2652,6 +2658,23 @@ elm_config_scale_set(double scale)
    _elm_rescale();
 }
 
+EAPI const char *
+elm_config_icon_theme_get(void)
+{
+   return _elm_config->icon_theme;
+}
+
+EAPI void
+elm_config_icon_theme_set(const char *theme)
+{
+   eina_stringshare_del(_elm_config->icon_theme);
+
+   if (theme)
+     _elm_config->icon_theme = eina_stringshare_add(theme);
+   else
+     _elm_config->icon_theme = eina_stringshare_add(ELM_CONFIG_ICON_THEME_ELEMENTARY);
+}
+
 EAPI Eina_Bool
 elm_config_password_show_last_get(void)
 {

src/lib/elementary/elm_config.h

@@ -973,6 +973,29 @@ EAPI double elm_config_scale_get(void);
  */
 EAPI void   elm_config_scale_set(double scale);
 
+/**
+ * Get the icon theme the user has set.
+ *
+ * This gets the global icon theme currently set or the default value
+ * ELM_CONFIG_ICON_THEME_ELEMENTARY.
+ *
+ * @return the icon theme to use
+ * @ingroup Elm_Icon
+ */
+EAPI const char *elm_config_icon_theme_get(void);
+
+/**
+ * Set the icon theme for all elementary apps.
+ *
+ * This method will set the icon theme for all elm_icon_standard_set calls.
+ * Valid parameters are the name of an installed freedesktop.org icon theme
+ * or ELM_CONFIG_ICON_THEME_ELEMENTARY for the built in theme.
+ *
+ * @param the name of a freedesktop.org icon theme or ELM_CONFIG_ICON_THEME_ELEMENTARY
+ * @ingroup Elm_Icon
+ */
+EAPI void elm_config_icon_theme_set(const char *theme);
+
 /**
  * @defgroup Elm_Password_last_show Password show last
  * @ingroup Elementary

src/lib/elementary/elm_priv.h

@@ -134,7 +134,7 @@ struct _Elm_Theme
  * the users config doesn't need to be wiped - simply new values need
  * to be put in
  */
-#define ELM_CONFIG_FILE_GENERATION 0x0009
+#define ELM_CONFIG_FILE_GENERATION 0x000a
 #define ELM_CONFIG_VERSION_EPOCH_OFFSET 16
 #define ELM_CONFIG_VERSION         ((ELM_CONFIG_EPOCH << ELM_CONFIG_VERSION_EPOCH_OFFSET) | \
                                     ELM_CONFIG_FILE_GENERATION)
@@ -317,6 +317,7 @@ struct _Elm_Config
    int           gl_depth;
    int           gl_stencil;
    int           gl_msaa;
+   const char   *icon_theme;
 
    /* Not part of the EET file */
    Eina_Bool     is_mirrored : 1;