add support for storing text styles in themes.

also reset text styles when resetting to the default theme.

release/scripts/startup/bl_ui/space_userpref.py

@@ -488,7 +488,10 @@ class USERPREF_MT_interface_theme_presets(Menu):
     preset_subdir = "interface_theme"
     preset_operator = "script.execute_preset"
     preset_type = 'XML'
-    preset_xml_map = (("user_preferences.themes[0]", "Theme"), )
+    preset_xml_map = (
+        ("user_preferences.themes[0]", "Theme"),
+        ("user_preferences.ui_styles[0]", "ThemeStyle"),
+        )
     draw = Menu.draw_preset
 
 

source/blender/editors/interface/interface_intern.h

@@ -560,6 +560,7 @@ int ui_id_icon_get(struct bContext *C, struct ID *id, const bool big);
 /* resources.c */
 void init_userdef_do_versions(void);
 void ui_theme_init_default(void);
+void ui_style_init_default(void);
 void ui_resources_init(void);
 void ui_resources_free(void);
 

source/blender/editors/interface/interface_ops.c

@@ -351,6 +351,7 @@ static void UI_OT_eyedropper(wmOperatorType *ot)
 static int reset_default_theme_exec(bContext *C, wmOperator *UNUSED(op))
 {
 	ui_theme_init_default();
+	ui_style_init_default();
 	WM_event_add_notifier(C, NC_WINDOW, NULL);
 	
 	return OPERATOR_FINISHED;

source/blender/editors/interface/resources.c

@@ -1001,6 +1001,13 @@ void ui_theme_init_default(void)
 	btheme->tclip.handle_vertex_size = 4;
 }
 
+void ui_style_init_default(void)
+{
+	BLI_freelistN(&U.uistyles);
+	/* gets automatically re-allocated */
+	uiStyleInit();
+}
+
 
 void UI_SetTheme(int spacetype, int regionid)
 {