extends SceneTree
## Renders an SVG to a square PNG, used to package the icon for Linux.
##
## Usage: godot --headless -s render_icon.gd -- <input.svg> <output.png> <size>


func _initialize() -> void:
	var args: PackedStringArray = OS.get_cmdline_user_args()
	if args.size() != 3:
		printerr("Usage: godot --headless -s render_icon.gd -- <input.svg> <output.png> <size>")
		quit(1)
		return
	var svg: String = FileAccess.get_file_as_string(args[0])
	var source: Image = Image.new()
	# Load at 1x to read the SVG's own size, then scale so the result is <size> pixels
	var error: int = source.load_svg_from_string(svg)
	if error == OK:
		var image: Image = Image.new()
		error = image.load_svg_from_string(svg, float(args[2]) / source.get_width())
		if error == OK:
			error = image.save_png(args[1])
	if error != OK:
		printerr("Could not render %s to %s (error %d)" % [args[0], args[1], error])
	quit(error)