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# -*- coding: utf-8 -*-
# Copyright 2014, 2015 matrix.org
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from ._base import Config
from collections import namedtuple
ThumbnailRequirement = namedtuple(
"ThumbnailRequirement", ["width", "height", "method", "media_type"]
)
def parse_thumbnail_requirements(thumbnail_sizes):
""" Takes a list of dictionaries with "width", "height", and "method" keys
and creates a map from image media types to the thumbnail size, thumnailing
method, and thumbnail media type to precalculate
Args:
thumbnail_sizes(list): List of dicts with "width", "height", and
"method" keys
Returns:
Dictionary mapping from media type string to list of
ThumbnailRequirement tuples.
"""
requirements = {}
for size in thumbnail_sizes:
width = size["width"]
height = size["height"]
method = size["method"]
jpeg_thumbnail = ThumbnailRequirement(width, height, method, "image/jpeg")
png_thumbnail = ThumbnailRequirement(width, height, method, "image/png")
requirements.setdefault("image/jpeg", []).append(jpeg_thumbnail)
requirements.setdefault("image/gif", []).append(png_thumbnail)
requirements.setdefault("image/png", []).append(png_thumbnail)
return {
media_type: tuple(thumbnails)
for media_type, thumbnails in requirements.items()
}
class ContentRepositoryConfig(Config):
def read_config(self, config):
self.max_upload_size = self.parse_size(config["max_upload_size"])
self.max_image_pixels = self.parse_size(config["max_image_pixels"])
self.media_store_path = self.ensure_directory(config["media_store_path"])
self.uploads_path = self.ensure_directory(config["uploads_path"])
self.dynamic_thumbnails = config["dynamic_thumbnails"]
self.thumbnail_requirements = parse_thumbnail_requirements(
config["thumbnail_sizes"]
)
def default_config(self, **kwargs):
media_store = self.default_path("media_store")
uploads_path = self.default_path("uploads")
return """
# Directory where uploaded images and attachments are stored.
media_store_path: "%(media_store)s"
# Directory where in-progress uploads are stored.
uploads_path: "%(uploads_path)s"
# The largest allowed upload size in bytes
max_upload_size: "10M"
# Maximum number of pixels that will be thumbnailed
max_image_pixels: "32M"
# Whether to generate new thumbnails on the fly to precisely match
# the resolution requested by the client. If true then whenever
# a new resolution is requested by the client the server will
# generate a new thumbnail. If false the server will pick a thumbnail
# from a precalcualted list.
dynamic_thumbnails: false
# List of thumbnail to precalculate when an image is uploaded.
thumbnail_sizes:
- width: 32
height: 32
method: crop
- width: 96
height: 96
method: crop
- width: 320
height: 240
method: scale
- width: 640
height: 480
method: scale
""" % locals()
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