#!/usr/bin/env python
# -*- coding: utf8 -*-
#
# Copyright (C) 2014 Niccolo Rigacci
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# To assign a keyboard shortcut in GIMP: menu Edit, Preferences,
# Interface, Configure Keyboard Shortcuts, Search "Export selection",
# assign a keyboard combination, e.g. Ctrl-Alt-E.
# Then click on Save Keyboard Shortcuts Now

from gimpfu import *
import os, sys

def rotate_and_export_jpeg(img, drawable, image_number, rotate):

    pdb.gimp_edit_copy(drawable)
    tmp_image = pdb.gimp_edit_paste_as_new()

    if rotate == 1: pdb.gimp_image_rotate(tmp_image, ROTATE_90)
    if rotate == 2: pdb.gimp_image_rotate(tmp_image, ROTATE_180)
    if rotate == 3: pdb.gimp_image_rotate(tmp_image, ROTATE_270)

    tmp_layer = pdb.gimp_image_get_active_layer(tmp_image)
    tmp_display = pdb.gimp_display_new(tmp_image)

    # Make unique filename.
    filename = "%02d" % (image_number)
    minor_number = 0
    while os.path.exists(filename + ".jpg"):
        filename = "%02d-%03d" % (image_number, minor_number)
        minor_number += 1

    pdb.file_jpeg_save(
        tmp_image,
        tmp_layer,
        filename + ".jpg",	# filename
        filename,		# raw-filename
        0.92,			# quality
        0.00,			# smoothing
        1,			# optimize
        0,			# progressive
        "",			# comment
        0,			# subsampling option number
        1,			# force baseline jpeg
        0,			# interval of restart markers
        2			# dct algorithm to use
    )

    pdb.gimp_display_delete(tmp_display)


register(
    "export-selection",
    "Export selections as jpeg image, with rotation",
    "Export selections as jpeg image, with rotation",
    "Niccolo Rigacci <niccolo@rigacci.org>",
    "Niccolo Rigacci - GPL v.3",
    "2014-04-22",
    "<Image>/Tools/Selection Tools/Export selection as jpeg...",
    "*",
    [
        (PF_SPINNER, "image_number", "Image number: ", 0, (0, 100, 1)),
        (PF_OPTION, "rotate", "Rotate clockwise: ", 0, ("No", "90", "180", "270"))
    ],
    [],
    rotate_and_export_jpeg
)

main()