Merge branch 'release/new-year-version'
commit
a2c04a9807
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__pycache__/
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.*
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imgdir = "."
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recursive = True
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refresh = 5
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cachedir = "auto"
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resolution = (1920, 1080)
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filetypes = ["*.jpg", "*.JPG"]
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@ -1 +1,4 @@
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Flask==1.0.2
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Pillow==5.3.0
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Click==7.0
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waitress==1.1.0
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#!/usr/bin/python3
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from waitress import serve
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import slider
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serve(slider.app, host="0.0.0.0", port=5000)
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122
slider.py
122
slider.py
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#!/usr/bin/python3
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from flask import Flask, render_template
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from random import randint
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from flask import (
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Flask,
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render_template,
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send_from_directory,
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redirect,
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url_for,
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request,
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)
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from random import choice
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from pathlib import Path
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from PIL import Image
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from time import time
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from hashlib import sha256
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import click
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from shutil import rmtree
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from tempfile import gettempdir
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import config
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app = Flask(__name__)
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imgdir = Path(config.imgdir).expanduser().resolve()
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cache_resolution = config.resolution
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cache_dir = (
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Path(gettempdir()) / "webslider"
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if config.cachedir == "auto"
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else Path(config.cachedir)
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) / ("%sx%s" % cache_resolution)
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def find_images():
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images = set()
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for filetype in config.filetypes:
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glob = "**/" + filetype if config.recursive else filetype
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images.update(imgdir.glob(glob))
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return list(images)
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@app.route("/")
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def hello():
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return render_template("hello.html", num=randint(1, 23))
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def random():
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print(request.remote_addr, request.base_url)
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return render_template("random.html", refresh=config.refresh)
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@app.route("/random_image/")
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def random_image():
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print(request.remote_addr, request.base_url)
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try:
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last_modified_time, last_modified_file = max(
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(f.stat().st_mtime, f) for f in find_images()
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)
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if time() - last_modified_time <= 60:
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selected_image = last_modified_file.relative_to(imgdir)
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else:
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images = find_images()
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selected_image = choice(images).relative_to(imgdir)
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except ValueError:
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return redirect(url_for("static", filename="clear.gif"))
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return redirect(
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url_for("image", filename=selected_image)
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+ "?hash=%s" % get_cache_filename(selected_image)
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)
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@app.route("/img/<path:filename>")
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def image(filename):
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print(request.remote_addr, request.base_url)
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cache_filename = create_cache_file(filename)
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return send_from_directory(cache_dir, cache_filename)
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def rm_cachedir():
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if cache_dir.exists():
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print("Removing cache dir", cache_dir)
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rmtree(cache_dir)
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def create_cachedir():
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if not cache_dir.exists():
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print("Creating cache dir", cache_dir)
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cache_dir.mkdir(parents=True)
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def create_cache_file(filename):
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create_cachedir()
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cache_file = get_cache_filename(filename)
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if not (cache_dir / cache_file).exists():
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print("Creating cache file", filename)
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img = Image.open(imgdir / filename)
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img.thumbnail(cache_resolution)
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img.save(cache_dir / cache_file, "JPEG")
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return cache_file
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def get_cache_filename(filename):
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original_file_path = imgdir / filename
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return sha256(str(original_file_path.resolve()).encode("utf-8")).hexdigest()
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def pre_cache_images():
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for image_file in sorted(find_images()):
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create_cache_file(image_file.relative_to(imgdir))
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@click.command()
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@click.option("--build-cache", is_flag=True, default=False, help="pre-cache images")
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@click.option(
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"--clear-cache", is_flag=True, default=False, help="clear cache directory"
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)
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def run_slider(build_cache, clear_cache):
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if clear_cache:
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rm_cachedir()
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if build_cache:
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pre_cache_images()
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app.run(host="0.0.0.0")
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if __name__ == "__main__":
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app.run()
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run_slider()
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@ -1,6 +0,0 @@
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<html>
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<body>
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<p>Hello slider number {{ num }}!</p>
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<p><img src="{{ url_for("static", filename="cat.jpg") }}"></p>
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</body>
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</html>
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@ -0,0 +1,30 @@
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<html>
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<head>
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<style>
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img {
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width: 100%;
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height: 98%;
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object-fit: contain;
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background: url({{ url_for("static", filename="loading.gif") }}) 50% no-repeat;
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}
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</style>
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</head>
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<body bgcolor="black">
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<img id="slider" src="{{ url_for("static", filename="clear.gif") }}" />
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<script>
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var downloadingImage = new Image();
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downloadingImage.onload = function()
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{
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document.getElementById("slider").src = this.src;
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};
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function updateImage()
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{
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downloadingImage.src = "{{ url_for("random_image") }}?" + new Date().getTime();
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}
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updateImage();
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setInterval(updateImage, {{ refresh * 1000 }});
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</script>
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</body>
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</html>
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