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path: root/game/src/OptionMenu/GuiScaleSelector.gd
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extends SettingOptionButton

@export
var default_value : float = GuiScale.error_guiscale

func _find_guiscale_index_by_value(value : float) -> int:
   for item_index in item_count:
      if get_item_metadata(item_index) == value:
         return item_index
   return -1

func _sync_guiscales(to_select:float=GuiScale.get_current_guiscale()) -> void:
   clear()
   default_selected = -1
   selected = -1
   for guiscale_value in GuiScale.get_guiscale_value_list():
      add_item(GuiScale.get_guiscale_display_name(guiscale_value))
      set_item_metadata(item_count - 1, guiscale_value)

      if guiscale_value == default_value:
         default_selected = item_count - 1

      if guiscale_value == to_select:
         selected = item_count - 1

   if default_selected == -1:
      default_selected = item_count - 1

   if selected == -1:
      selected = default_selected
   
func _setup_button():
   print("Setup Gui scales Button")
   if default_value <= 0:
      #TODO: verify this project setting is what we actually want
      #print("get default from project settings, default was %f",default_value)
      default_value = ProjectSettings.get_setting("display/window/stretch/scale")
   GuiScale.add_guiscale(default_value,&"default")
   _sync_guiscales()

func _get_value_for_file(select_value : int):
   if _valid_index(select_value):
      return get_item_metadata(select_value)
   else:
      return null

func _set_value_from_file(load_value):
   #no need to match types like resolution does since we don't 
   #intend on supporting strings
   var target_guiscale = load_value
   selected = _find_guiscale_index_by_value(target_guiscale)
   if selected != -1:return
   if GuiScale.add_guiscale(target_guiscale):
      _sync_guiscales(target_guiscale)
      return
   push_error("Setting value '%s' invalid for setting [%s] %s" % [load_value, section_name, setting_name])
   selected = default_selected

func _on_item_selected(index:int):
   if _valid_index(index):
      print("Change GUI scale on selector index: %d" % index)
      GuiScale.set_guiscale(get_item_metadata(index))
   else:
      push_error("Invalid GuiScaleSelector index: %d" % index)
      reset_setting()