Godot toggle button for toggle state icon.

toggle_button.gd

@tool
class_name ToggleButton extends Button

@export var icon_toggled: Texture2D
@onready var _icon: Texture2D = icon

func _ready() -> void:
	toggle_mode = true
	if not theme_type_variation:
		theme_type_variation = &"ToggleButton"

func _toggled(toggled_on: bool) -> void:
	icon = icon_toggled if toggled_on and icon_toggled else _icon