mirror of
https://github.com/chatmail/relay.git
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7cb8f90340
* create a wwwdev.sh entry point for developing the web part * rename script * fix README * add a note * don't depend on deltachat python package * avoid bailing out on jinja2 errors, and provide file-url for instant clickability * in webdev mode make page auto-refresh every 3 seconds
88 lines
2.3 KiB
Python
88 lines
2.3 KiB
Python
import importlib
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import qrcode
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import os
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from PIL import ImageFont, ImageDraw, Image
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import io
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def gen_qr_png_data(maildomain):
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url = f"DCACCOUNT:https://{maildomain}/cgi-bin/newemail.py"
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image = gen_qr(maildomain, url)
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temp = io.BytesIO()
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image.save(temp, format="png")
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temp.seek(0)
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return temp
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def gen_qr(maildomain, url):
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# taken and modified from
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# https://github.com/deltachat/mailadm/blob/master/src/mailadm/gen_qr.py
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# info = f"{maildomain} invite code"
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info = ""
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# load QR code
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qr = qrcode.QRCode(
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version=1,
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error_correction=qrcode.constants.ERROR_CORRECT_H,
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box_size=1,
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border=1,
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)
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qr.add_data(url)
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qr.make(fit=True)
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qr_img = qr.make_image(fill_color="black", back_color="white")
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# paint all elements
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ttf_path = str(
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importlib.resources.files(__package__).joinpath("data/opensans-regular.ttf")
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)
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logo_red_path = str(
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importlib.resources.files(__package__).joinpath("data/delta-chat-bw.png")
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)
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assert os.path.exists(ttf_path), ttf_path
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font_size = 16
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font = ImageFont.truetype(font=ttf_path, size=font_size)
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num_lines = ((info).count("\n") + 1) if info else 0
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size = width = 384
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qr_padding = 6
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text_height = font_size * num_lines
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height = size + text_height
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image = Image.new("RGBA", (width, height), "white")
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qr_final_size = width
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if num_lines:
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draw = ImageDraw.Draw(image)
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# draw text
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if hasattr(font, "getsize"):
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info_pos = (width - font.getsize(info.strip())[0]) // 2
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else:
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info_pos = (width - font.getbbox(info.strip())[3]) // 2
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draw.multiline_text(
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(info_pos, size - qr_padding // 2),
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info,
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font=font,
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fill="black",
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align="right",
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)
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# paste QR code
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image.paste(
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qr_img.resize((qr_final_size, qr_final_size), resample=Image.NEAREST),
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(qr_padding, qr_padding),
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)
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# background delta logo
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logo2_img = Image.open(logo_red_path)
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logo2_width = int(size / 6)
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logo2 = logo2_img.resize((logo2_width, logo2_width), resample=Image.NEAREST)
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pos = int((size / 2) - (logo2_width / 2))
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image.paste(logo2, (pos, pos), mask=logo2)
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return image
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