177 lines
7.1 KiB
Python
177 lines
7.1 KiB
Python
# Standard library imports.
|
|
from pathlib import Path
|
|
from math import ceil
|
|
|
|
# External library imports.
|
|
import filetype
|
|
|
|
# Django imports.
|
|
from django.http import HttpResponseNotFound
|
|
from django.conf import settings
|
|
from django.utils.http import urlencode
|
|
from django.shortcuts import (render,
|
|
redirect)
|
|
|
|
# Project imports.
|
|
from .utils import make_thumbnail
|
|
|
|
###########################################################################################
|
|
# CONSTANTS. #
|
|
###########################################################################################
|
|
|
|
CELLS_PER_ROW = 7
|
|
ROWS_PER_PAGE = 4
|
|
IMAGES_PER_PAGE = CELLS_PER_ROW * ROWS_PER_PAGE
|
|
|
|
###########################################################################################
|
|
# View functions. #
|
|
###########################################################################################
|
|
|
|
def do_recursive_search(start_path, query):
|
|
"""
|
|
Gets all images and sub-directories inside the start_path whose name matches the given query,
|
|
and then joins the results recursively by iterating in each sub-directory.
|
|
"""
|
|
|
|
# Get all sub-dirs and images that match the query.
|
|
subdirs = sorted([i.absolute() for i in start_path.iterdir() if i.is_dir() and query.lower() in i.name.lower()])
|
|
images = sorted([i for i in start_path.iterdir() if i.is_file() and filetype.is_image(str(i)) and query.lower() in i.name.lower()])
|
|
|
|
# For all sub-directories, regardless of the query.
|
|
for subdir in sorted([i for i in start_path.iterdir() if i.is_dir()]):
|
|
# Do a recursive search.
|
|
rec_subdirs, rec_images = do_recursive_search(subdir, query.lower())
|
|
|
|
# Join the results if any.
|
|
subdirs.extend(rec_subdirs)
|
|
images.extend(rec_images)
|
|
|
|
return subdirs, images
|
|
|
|
###########################################################################################
|
|
# View functions. #
|
|
###########################################################################################
|
|
|
|
def gallery_view(request, path = None):
|
|
"""
|
|
Shows a list of subdirectories and image files inside the given path.
|
|
The path should be inside the GALLERY_ROOT path, otherwise a 404 error will be thrown.
|
|
"""
|
|
|
|
def list2rows(lst, cells = CELLS_PER_ROW):
|
|
"""
|
|
Converts a list into a matrix with the given amount of cells per row.
|
|
"""
|
|
|
|
rows = []
|
|
i = 0
|
|
while i < len(lst):
|
|
row = []
|
|
for c in range(cells):
|
|
try:
|
|
row.append(lst[i + c])
|
|
except:
|
|
pass
|
|
rows.append(row)
|
|
i += cells
|
|
return rows
|
|
|
|
# Get the absolute path to show if any, else show the base gallery path.
|
|
full_path = settings.GALLERY_ROOT.joinpath(path) if path is not None else settings.GALLERY_ROOT
|
|
|
|
# Get the search query from the request, if any.
|
|
search = request.GET.get('search', default = '')
|
|
|
|
if full_path.exists():
|
|
# If the path exists then check if it points to a directory or an image.
|
|
if full_path.is_dir():
|
|
if search == '':
|
|
# If there is no search query then get all images and sub-directories of the current path.
|
|
subdirs = sorted([i for i in full_path.iterdir() if i.is_dir()])
|
|
images = sorted([i for i in full_path.iterdir() if i.is_file() and filetype.is_image(str(i))])
|
|
|
|
else:
|
|
# If there is a search query then search the current directory recursively.
|
|
subdirs, images = do_recursive_search(full_path, search)
|
|
|
|
# For every sub-directory found, prepare it's name and path for rendering.
|
|
subdir_data = []
|
|
for subdir in subdirs:
|
|
subdir_data.append({
|
|
'path': '/gallery/' + str(subdir.relative_to(settings.GALLERY_ROOT)),
|
|
'name': subdir.name
|
|
})
|
|
|
|
# Get the page number to show, if any. Default to the first one if unavailable or error.
|
|
try:
|
|
page = int(request.GET.get('page', 1))
|
|
except ValueError:
|
|
page = 1
|
|
|
|
# Compute the page offset to show.
|
|
num_pages = ceil((len(images) / CELLS_PER_ROW) / ROWS_PER_PAGE)
|
|
page_offset = IMAGES_PER_PAGE * (page - 1)
|
|
|
|
# Slice the images found with the page offset and prepare them for rendering.
|
|
img_data = []
|
|
for image in images[page_offset : page_offset + IMAGES_PER_PAGE]:
|
|
# Create thumbnails as needed.
|
|
make_thumbnail(image)
|
|
|
|
# Get the path of the image relative to the gallery root.
|
|
rel_path = image.relative_to(settings.GALLERY_ROOT)
|
|
|
|
# For each image, prepare it's path, thumbnail path and name for rendering.
|
|
img_data.append({
|
|
'path': '/gallery/' + str(rel_path),
|
|
'name': image.name,
|
|
'thumbnail': '/thumbs/' + str(rel_path)
|
|
})
|
|
|
|
# Rendering context.
|
|
context = {
|
|
'path': path,
|
|
'subdirs': list2rows(subdir_data),
|
|
'images': list2rows(img_data),
|
|
'pages': range(1, num_pages + 1),
|
|
'num_files': len(images),
|
|
'page': page,
|
|
'prev_page': page - 1,
|
|
'next_page': page + 1,
|
|
'num_pages': num_pages,
|
|
'search': urlencode({'search': search}) if search != '' else None,
|
|
'search_text': search
|
|
}
|
|
|
|
# Glorious success!
|
|
return render(request, 'gallery_view.html', context)
|
|
|
|
else:
|
|
# If the path points to an image, then get it's real path, and parent directory path.
|
|
image = Path('/imgs/').joinpath(path)
|
|
img_dir = settings.GALLERY_ROOT.joinpath(path).parent
|
|
|
|
# Then get all sibling images.
|
|
images = sorted([i.name for i in img_dir.iterdir() if i.is_file() and filetype.is_image(str(i))])
|
|
|
|
# Get the current image's index in it's directory.
|
|
index = images.index(image.name)
|
|
|
|
# Get the previous and next image indices.
|
|
previous = index - 1 if index > 0 else None
|
|
following = index + 1 if index < len(images) - 1 else None
|
|
|
|
# Set the current, previous and next images as the rendering context.
|
|
context = {
|
|
'image_path': image,
|
|
'prev': images[previous] if previous is not None else None,
|
|
'next': images[following] if following is not None else None
|
|
}
|
|
|
|
# Glorious success!
|
|
return render(request, 'image_view.html', context)
|
|
|
|
else:
|
|
# 404 if the path wasn't found.
|
|
return HttpResponseNotFound('Not found')
|