big work-in-progress: image support added, experimenting with font sizes, inverted text, line width, line height & more. Disabled all RSS feeds for now, except the toots coming from post.lurk.org... to be continued!
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@ -2,7 +2,6 @@
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https://televex.vvvvvvaria.org/
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Experimental communication tools (televex screen + televex print).
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## TeleVex Screen
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@ -17,7 +16,10 @@ Live: in the Varia windows.
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## TeleVex Print
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(Flask application + EPSON printer)
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web interface -----> printer
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Multifeeder -----> printer
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(Flask web application + EPSON printer)
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`$ make print`
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@ -25,7 +27,7 @@ The main script is: `print/start.py`
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Live: <https://televex.vvvvvvaria.org/print/>
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Local: `localhost:5000`
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Local: `localhost:5000/print`
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## Install TeleVex
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@ -11,11 +11,12 @@ from tools.televex import televex
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# Create the application.
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APP = flask.Flask(__name__)
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# Connect to the printer
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lp, lp_printer = televex.connect()
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# Set up a JSON database for storing printed items
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db = televex.database('printed.json')
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db_path = 'printed.json'
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db = televex.database(db_path)
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# Connect to the printer
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lp = televex.connect()
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# Check the Multifeeder regulary (every 10 min)
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# https://github.com/viniciuschiele/flask-apscheduler
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@ -28,7 +29,7 @@ scheduler.start()
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@scheduler.task('interval', id='check', minutes=1)
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def check():
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try:
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url = 'https://multi.vvvvvvaria.org/API/latest/10'
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url = 'https://multi.vvvvvvaria.org/API/latest/3'
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response = urllib.request.urlopen(url).read()
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feed = json.loads(response)
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except:
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@ -36,25 +37,38 @@ def check():
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for post in feed:
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source = post['feed_details']['rss']
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txt = post['summary']
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televex.print_now(txt, source, db, post=post, lp=lp, lp_printer=lp_printer)
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# only print toots for now (this is a test)
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if 'post.lurk.org' in source:
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txt, date = televex.preprocess(post, type='rss')
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already_in_db = televex.update_db(db, db_path, txt, source, date)
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if already_in_db == False:
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televex.print_now(txt, lp=lp, type='rss')
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@APP.route('/print/', methods=['GET', 'POST'])
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def print():
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txt = request.args.get('printing', '')
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img = request.files.get('img')
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if txt:
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source = 'TeleVex'
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televex.print_now(txt, source, db, lp=lp, lp_printer=lp_printer)
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txt, date = televex.preprocess(txt, type='txt')
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televex.update_db(db, db_path, txt, source, date)
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televex.print_now(txt, lp=lp, type='txt')
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return flask.redirect(flask.url_for('print'))
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return flask.render_template('index.html')
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elif img:
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source = 'TeleVex'
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img, date = televex.preprocess(img, type='img')
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televex.update_db(db, db_path, 'IMAGE', source, date)
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televex.print_now(img, lp=lp, type='img')
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return flask.redirect(flask.url_for('print'))
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return flask.render_template('print.html')
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@APP.route('/printed/', methods=['GET'])
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def printed():
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items = json.loads(open(db).read())
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return flask.render_template('printed.html', items=items)
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db = televex.database(db_path)
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return flask.render_template('printed.html', items=db)
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if __name__ == '__main__':
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APP.debug=True
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@ -1,5 +1,4 @@
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body{
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color:magenta;
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margin:2em;
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}
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div#print,
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@ -12,7 +11,7 @@ div#multifeeder div.multipost{
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margin:1em 0;
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}
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div#webcam img{
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width:500px;
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width: 500px;
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}
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pre{
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margin: 1em 0;
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@ -21,10 +21,11 @@
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<br>
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<h2>Image printing access point (not working yet)</h2>
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<form action="" method="GET">
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<button>Select image</button>
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<input class="submit" type="submit" value="print image"/>
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<h2>Image printing access point (png, jpg, gif)</h2>
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<form action="" method="POST" enctype=multipart/form-data>
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<input type="file" name="img" accept=".png, .jpg, .gif">
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<br><br>
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<input class="submit" type="submit" value="print"/>
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</form>
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</div>
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</div>
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@ -2,94 +2,116 @@ import sys, os, re, json
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from datetime import datetime, date
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import html2text
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from escpos import printer
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from tools.asciiWriter.text import make_column
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from tools.asciiWriter.utils import merge, print_lines, make_lines, translate
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from PIL import Image
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import base64
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import io
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def connect():
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# Get the printer's USB initializing code with $ sudo lsbusb
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try:
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lp = printer.Usb(0x4b8,0xe15)
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lp_printer = True
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# lp = printer.Usb(0x4b8,0xe15) # televex printer @ Varia
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lp = printer.Usb(0x4b8,0xe03) # printer @ poel
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except:
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lp = None
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lp_printer = False
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return lp, lp_printer
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return lp
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def database(db):
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if not os.path.exists(db):
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with open(db, 'w') as f:
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def database(db_path):
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if not os.path.exists(db_path):
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with open(db_path, 'w') as f:
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f.write(json.dumps({ "printed" : [] }, indent=4))
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f = open(db_path).read()
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db = json.loads(f)
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return db
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def html2plain(html):
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# remove HTML tags
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txt = re.sub(r'<.*?>', '', html)
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# make line breaks
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# https://git.vvvvvvaria.org/mb/ascii-art-but-with-unicode
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width = 48
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layers = []
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lines, remaining = make_column(txt, line_width=width)
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layers.append(lines)
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merged = merge(width, len(lines), ' ', layers)
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txt = ''
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for line in merged:
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txt += '{}\n'.format(''.join(line))
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return txt
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def update_db(txt, source, db, post=None):
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try:
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items = json.loads(open(db).read())
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except:
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items = { "printed" : [] } # Hmm ...
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# save the publishing date of this post
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if post:
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def preprocess(output, type=None):
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# date_str = None
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if type == 'txt':
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txt = output
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if type == 'txt' or type == 'img':
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post_date = datetime.now()
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date_str = post_date.strftime('%Y-%m-%d_%H-%M-%S')
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if type == 'rss':
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post = output
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txt = post['summary']
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year = post['published_parsed'][0]
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month = post['published_parsed'][1]
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day = post['published_parsed'][2]
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post_date = date(year, month, day)
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date_str = post_date.strftime('%Y-%m-%d')
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post = None
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else:
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post_date = datetime.now()
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date_str = post_date.strftime('%Y-%m-%d_%H-%M-%S')
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if type == 'txt' or type == 'rss':
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output = html2plain(txt)
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# clean txt from HTML tags
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txt = html2plain(txt)
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# limit printouts to 25 lines (this is a test)
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# lines = [line for line in txt.split('\n')][:25]
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# txt = '\n'.join(lines)
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# add txt to database
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return output, date_str
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def update_db(db, db_path, post, source, date, type=None):
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# add post to database
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# and check if this item is new
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item = {
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'source' : source,
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'date' : date_str,
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'printed' : txt
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'date' : date,
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'printed' : post
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}
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if item not in items['printed']:
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new_item = True
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with open(db, 'w') as out:
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items['printed'].append(item)
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out.write(json.dumps(items, indent=4))
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if item not in db['printed']:
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already_in_db = False
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with open(db_path, 'w') as out:
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db['printed'].append(item)
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out.write(json.dumps(db, indent=4))
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out.close()
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else:
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new_item = False
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already_in_db = True
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return new_item, txt
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return already_in_db
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def print_now(txt, source, db, post=None, lp=None, lp_printer=None):
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# check if this is a new item
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new_item, txt = update_db(txt, source, db, post=post)
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def print_now(output, lp=None, type=None):
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# configure the printouts
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if lp:
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if type == 'rss':
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lp.set(
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invert=True,
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font='b',
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width=6, # 1-8
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height=6, # 1-8
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)
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lp.line_spacing(spacing=75) # 0 - 255
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columns = 12 # b 8 8
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elif type == "txt":
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lp.set(
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align='left',
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font='b',
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text_type='normal', # B, U, U2, BU, BU2, NORMAL
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width=1, # 1-8
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height=1, # 1-8
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density=9, # 0-8, 9=keep unchanged
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invert=False,
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smooth=False,
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flip=False
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)
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lp.line_spacing(spacing=65) # 0 - 255
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# columns = 48 # a 1 1
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columns = 65 # b 1 1
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elif type == 'img':
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lp.line_spacing(spacing=50) # 0 - 255
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# if this item is new
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# then print!
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if new_item == True:
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if lp_printer == True:
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lp.text(txt)
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# print
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if lp:
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if type == 'txt' or type == 'rss':
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lp.block_text(output, columns=columns) # columns=line width
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lp.cut()
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else:
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# or print in the terminal!
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sys.stderr.write('Printing output to the terminal:\n\n'+txt+'\n\n')
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elif type == 'img':
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lp.image(output)
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lp.cut()
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else:
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sys.stderr.write('Printing output to the terminal:\n\n'+txt+'\n\n')
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