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# -*- coding: utf-8 -*-
# Copyright © 2014-2021 Pelle Nilsson and others.
# Permission is hereby granted, free of charge, to any
# person obtaining a copy of this software and associated
# documentation files (the "Software"), to deal in the
# Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the
# Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice
# shall be included in all copies or substantial portions of
# the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
# OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
"""Resize images and create thumbnails for them."""
import os
from nikola.plugin_categories import Task
from nikola.image_processing import ImageProcessor
from nikola import utils
class ScaleImage(Task, ImageProcessor):
"""Resize images and create thumbnails for them."""
name = "scale_images"
def process_tree(self, src, dst):
"""Process all images in a src tree and put the (possibly) rescaled images in the dst folder."""
thumb_fmt = self.kw['image_thumbnail_format']
base_len = len(src.split(os.sep))
for root, dirs, files in os.walk(src, followlinks=True):
root_parts = root.split(os.sep)
dst_dir = os.path.join(dst, *root_parts[base_len:])
utils.makedirs(dst_dir)
for src_name in files:
if (not src_name.lower().endswith(tuple(self.image_ext_list)) and not src_name.upper().endswith(tuple(self.image_ext_list))):
continue
dst_file = os.path.join(dst_dir, src_name)
src_file = os.path.join(root, src_name)
thumb_name, thumb_ext = os.path.splitext(src_name)
thumb_file = os.path.join(dst_dir, thumb_fmt.format(
name=thumb_name,
ext=thumb_ext,
))
yield {
'name': dst_file,
'file_dep': [src_file],
'targets': [dst_file, thumb_file],
'actions': [(self.process_image, (src_file, dst_file, thumb_file))],
'clean': True,
}
def process_image(self, src, dst, thumb):
"""Resize an image."""
self.resize_image(
src,
dst_paths=[dst, thumb],
max_sizes=[self.kw['max_image_size'], self.kw['image_thumbnail_size']],
bigger_panoramas=True,
preserve_exif_data=self.kw['preserve_exif_data'],
exif_whitelist=self.kw['exif_whitelist'],
preserve_icc_profiles=self.kw['preserve_icc_profiles']
)
def gen_tasks(self):
"""Copy static files into the output folder."""
self.kw = {
'image_thumbnail_size': self.site.config['IMAGE_THUMBNAIL_SIZE'],
'image_thumbnail_format': self.site.config['IMAGE_THUMBNAIL_FORMAT'],
'max_image_size': self.site.config['MAX_IMAGE_SIZE'],
'image_folders': self.site.config['IMAGE_FOLDERS'],
'output_folder': self.site.config['OUTPUT_FOLDER'],
'filters': self.site.config['FILTERS'],
'preserve_exif_data': self.site.config['PRESERVE_EXIF_DATA'],
'exif_whitelist': self.site.config['EXIF_WHITELIST'],
'preserve_icc_profiles': self.site.config['PRESERVE_ICC_PROFILES'],
}
self.image_ext_list = self.image_ext_list_builtin
self.image_ext_list.extend(self.site.config.get('EXTRA_IMAGE_EXTENSIONS', []))
yield self.group_task()
for src in self.kw['image_folders']:
dst = self.kw['output_folder']
filters = self.kw['filters']
real_dst = os.path.join(dst, self.kw['image_folders'][src])
for task in self.process_tree(src, real_dst):
task['basename'] = self.name
task['uptodate'] = [utils.config_changed(self.kw)]
yield utils.apply_filters(task, filters)
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