phatch-cli 0.2.7.1-3.1 / usr / share / phatch / phatch / actions / contour.py

# Phatch - Photo Batch Processor
# Copyright (C) 2007-2008 www.stani.be
#
# 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.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see http://www.gnu.org/licenses/
#
# Phatch recommends SPE (http://pythonide.stani.be) for editing python files.
#
# Follows PEP8

# Embedded icon is taken from www.openclipart.org (public domain)

from core import models
from lib.reverse_translation import _t
from lib.imtools import has_transparency, paste

#---PIL


def init():
    global Image, ImageOps, imtools
    import Image
    import ImageOps
    from lib import imtools
    global HTMLColorToRGBA
    from lib.colors import HTMLColorToRGBA


def put_border(image, size, offset, contour_color, fill_color, opacity,
        include_image):
    if opacity < 100:
        fill_color = HTMLColorToRGBA(fill_color, (255 * opacity) / 100)

    if not include_image:
        w, h = image.size
        image = Image.new('RGBA', (w + 2 * offset, h + 2 * offset), fill_color)
    else:
        image = image.convert('RGBA')
        image = ImageOps.expand(image, border=offset, fill=fill_color)
    image = ImageOps.expand(image, border=size, fill=contour_color)
    return image


def put_contour(image, size=1, offset=0, contour_color=0, fill_color=0,
        opacity=100, include_image=True):
    if not has_transparency(image):
        return put_border(
                    image, size, offset, contour_color, fill_color,
                    opacity, include_image)
    image = image.convert('RGBA')
    mask = imtools.get_alpha(image)

    w, h = image.size
    outer_mask = mask.resize(
        (w + 2 * (size + offset), h + 2 * (size + offset)),
        Image.ANTIALIAS)

    inner_mask = mask.resize(
        (w + 2 * offset, h + 2 * offset),
        Image.ANTIALIAS)
    inner_mask = ImageOps.expand(inner_mask, border=size, fill=0)
    paste(outer_mask, (255 * opacity) / 100, mask=inner_mask)
    if include_image:
        image = ImageOps.expand(image, border=size + offset, fill=(0, 0, 0, 0))
        mask = ImageOps.expand(mask, border=size + offset, fill=0)
        paste(outer_mask, 255, mask=mask)

    contour = ImageOps.colorize(outer_mask, (255, 255, 255), contour_color)
    paste(contour, fill_color, mask=inner_mask)
    if include_image:
        paste(contour, image, mask=image)
    contour.putalpha(outer_mask)
    return contour

#---Phatch


class Action(models.Action):
    label = _t('Contour')
    author = 'Nadia Alramli'
    email = 'mail@nadiana.com'
    init = staticmethod(init)
    pil = staticmethod(put_contour)
    version = '0.1'
    tags = [_t('filter')]
    __doc__ = _t('Draw a contour around image edges')

    def interface(self, fields):
        fields[_t('Size')] = self.PixelField('1px', choices=['1', '2', '5'])
        fields[_t('Offset')] = self.PixelField('0px', choices=['0', '1', '2'])
        fields[_t('Contour Color')] = self.ColorField('#000000')
        fields[_t('Fill Color')] = self.ColorField('#FFFFFF')
        fields[_t('Opacity')] = self.SliderField(100, 0, 100)
        fields[_t('Include image')] = self.BooleanField(True)

    def values(self, info):
        #pixel fields
        x0, y0 = info['size']
        dim = (x0 + y0) / 2
        return super(Action, self).values(info, pixel_fields={
            'Size': dim,
            'Offset': dim})

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