langbrain/GIMP Scripting.md

How to export every layer as single image

import os
import gimpfu

def export_layers(image, drawable):
	image_uri = gimpfu.pdb.gimp_image_get_uri(image)
	image_path = image_uri[7:] # Removing 'file://' from the URI
	output_folder = os.path.dirname(image_path)
	if output_folder and os.path.exists(output_folder):
		for i, layer in enumerate(image.layers, start=1):
			filename = "layer_{:03}.png".format(i)
			filepath = os.path.join(output_folder, filename)
			tmp_image = gimpfu.pdb.gimp_image_new(image.width, image.height, image.base_type)
			layer_copy = gimpfu.pdb.gimp_layer_new_from_drawable(layer, tmp_image)
			gimpfu.pdb.gimp_image_insert_layer(tmp_image, layer_copy, None, 0)
			gimpfu.pdb.file_png_save_defaults(tmp_image, layer_copy, filepath, filename)
			gimpfu.pdb.gimp_image_delete(tmp_image)
	else:
		gimpfu.gimp_message("Please save the image first to determine the output directory.")

def register_export_layers():
	gimpfu.register(
		"python_fu_export_layers",
		"Export all layers",
		"Exports all layers as separate PNG files",
		"Your Name", "Your Name", "2024",
		"Export Layers...",
		"*", # This makes the script available for all types of images
		[
			(gimpfu.PF_IMAGE, "image", "Input image", None),
			(gimpfu.PF_DRAWABLE, "drawable", "Input drawable", None),
		],
		[],
		export_layers,
		menu="<Image>/File/Export/"
	)
	gimpfu.main()

register_export_layers()