534 lines
17 KiB
Python
534 lines
17 KiB
Python
import io
|
|
import tempfile
|
|
import subprocess
|
|
from flask import Flask, render_template_string, request, send_from_directory
|
|
from PIL import Image, ImageDraw, ImageFont
|
|
import re
|
|
|
|
app = Flask(__name__)
|
|
app.secret_key = 'TpfxYMxUJxJMtCCTraBSg1rbd6NLz38JTmIfpBLsotcI47EqXU'
|
|
|
|
FONT_PATH = "/usr/share/fonts/truetype/DejaVuSansMono.ttf"
|
|
FONT_PATH_BOLD = "/usr/share/fonts/truetype/DejaVuSansMono-Bold.ttf"
|
|
FONT_PATH_OBLIQUE = "/usr/share/fonts/truetype/DejaVuSansMono-Oblique.ttf"
|
|
FONT_PATH_BOLDITALIC = "/usr/share/fonts/truetype/DejaVuSansMono-BoldOblique.ttf"
|
|
FONT_SIZE = 24
|
|
HEADER_SIZE_1 = 56
|
|
HEADER_SIZE_2 = 34
|
|
HEADER_SIZE_3 = 28
|
|
IMAGE_WIDTH = 384
|
|
BULLET_CHAR = "• "
|
|
|
|
HTML_FORM = '''
|
|
<!doctype html>
|
|
<title>CatNote</title>
|
|
<link rel="manifest" href="/static/manifest.json">
|
|
<style>
|
|
body {
|
|
font-family: sans-serif;
|
|
background: #181c1f;
|
|
color: #ddd;
|
|
min-height: 100vh;
|
|
margin: 0;
|
|
}
|
|
.centered-flex {
|
|
display: flex;
|
|
justify-content: center;
|
|
align-items: flex-start;
|
|
height: 100vh;
|
|
gap: 2.6em;
|
|
padding-top: 2em;
|
|
}
|
|
.form-card {
|
|
background: #22282c;
|
|
padding: 2em 2em 1em 2em;
|
|
border-radius: 1.5em;
|
|
box-shadow: 0 0 12px 0 #000a;
|
|
min-width: 410px;
|
|
max-width: 450px;
|
|
margin-right: 0;
|
|
box-sizing: border-box;
|
|
display: flex;
|
|
flex-direction: column;
|
|
}
|
|
|
|
.markdown-ref {
|
|
background: #22282c;
|
|
border-radius: 1.2em;
|
|
box-shadow: 0 0 12px 0 #000a;
|
|
padding: 2em 2em 1.5em 2em;
|
|
color: #b6c8e0;
|
|
font-size: 1.08em;
|
|
font-family: inherit;
|
|
box-sizing: border-box;
|
|
width: 100%;
|
|
max-width: 410px;
|
|
}
|
|
.markdown-ref h4 {
|
|
margin: 0 0 0.4em 0;
|
|
color: #88e0ff;
|
|
font-size: 1.12em;
|
|
font-weight: 700;
|
|
letter-spacing: 0.01em;
|
|
}
|
|
.markdown-ref ul {
|
|
margin: 0.6em 0 0.3em 0.1em;
|
|
padding-left: 1.1em;
|
|
}
|
|
.markdown-ref li {
|
|
margin-bottom: 0.36em;
|
|
}
|
|
.markdown-ref code {
|
|
background: #181c1f;
|
|
border-radius: 0.5em;
|
|
padding: 0.12em 0.46em;
|
|
color: #aef6cb;
|
|
font-size: 0.98em;
|
|
margin-left: 0.18em;
|
|
}
|
|
textarea {
|
|
width: 100%;
|
|
height: 14em;
|
|
padding: 0.75em;
|
|
border-radius: 0.7em;
|
|
border: 1.5px solid #444;
|
|
background: #181c1f;
|
|
color: #eee;
|
|
font-size: 1.06em;
|
|
margin-bottom: 1.5em;
|
|
resize: vertical;
|
|
font-family: 'DejaVu Sans Mono', 'Fira Mono', 'monospace';
|
|
box-sizing: border-box;
|
|
margin-right: 0;
|
|
min-width: 0;
|
|
}
|
|
.buttons {
|
|
display: flex;
|
|
gap: 1em;
|
|
justify-content: center;
|
|
}
|
|
button[type=submit] {
|
|
background: linear-gradient(90deg, #8ee3c1, #35a7ff);
|
|
color: #222;
|
|
font-weight: bold;
|
|
font-size: 1.12em;
|
|
border: none;
|
|
border-radius: 0.7em;
|
|
padding: 0.5em 1.6em;
|
|
margin-top: 0.1em;
|
|
box-shadow: 0 2px 12px #1116;
|
|
cursor: pointer;
|
|
transition: filter 0.2s, box-shadow 0.2s;
|
|
filter: brightness(1);
|
|
}
|
|
button[type=submit]:hover {
|
|
filter: brightness(1.12);
|
|
box-shadow: 0 4px 18px #2229;
|
|
}
|
|
|
|
button[type=submit][name=print] {
|
|
background: linear-gradient(90deg, #ffeb3b, #ff9100);
|
|
color:#181c1f;
|
|
}
|
|
|
|
.preview-card {
|
|
background: #23282d;
|
|
padding: 2em 1.4em 1em 1.4em;
|
|
border-radius: 1.5em;
|
|
box-shadow: 0 0 12px 0 #0007;
|
|
min-width: 400px;
|
|
max-width: 400px;
|
|
text-align: center;
|
|
box-sizing: border-box;
|
|
margin-left: 0;
|
|
}
|
|
img {
|
|
margin-top: 1em;
|
|
max-width: 100%;
|
|
background: #fff;
|
|
box-shadow: 0 0 8px 1px #111a;
|
|
}
|
|
.status-msg {
|
|
margin: 0.6em 0 0.1em 0;
|
|
font-size: 1.12em;
|
|
border-radius: 0.7em;
|
|
background: #294b3a;
|
|
color: #9fffc6;
|
|
padding: 0.55em 1.2em;
|
|
font-weight: 600;
|
|
box-shadow: 0 0 6px #183a24a0;
|
|
display: inline-block;
|
|
border-left: 4px solid #4ffab0;
|
|
}
|
|
.status-err {
|
|
background: #48202c;
|
|
color: #ffdbe4;
|
|
border-left: 4px solid #ff6384;
|
|
box-shadow: 0 0 8px #22000690;
|
|
}
|
|
|
|
@media (max-width: 1000px) {
|
|
.centered-flex {
|
|
flex-direction: column;
|
|
align-items: center;
|
|
height: auto;
|
|
gap: 1.6em;
|
|
}
|
|
|
|
.form-card,
|
|
.preview-card,
|
|
.markdown-ref {
|
|
min-width: auto;
|
|
max-width: 90vw;
|
|
width: 100%;
|
|
margin: 0.8em 0;
|
|
}
|
|
}
|
|
|
|
.print-frame {
|
|
position: relative;
|
|
background: #fff;
|
|
padding: 10px 15px;
|
|
margin-top: 1em;
|
|
overflow: hidden;
|
|
}
|
|
|
|
.print-frame::before,
|
|
.print-frame::after {
|
|
content: "";
|
|
position: absolute;
|
|
left: 0;
|
|
width: 101%;
|
|
height: 10px;
|
|
background: url('data:image/svg+xml;base64,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') repeat-x left;
|
|
background-size: 10px 384px;
|
|
z-index: 1;
|
|
}
|
|
|
|
.print-frame::before {
|
|
top: 0;
|
|
}
|
|
|
|
.print-frame::after {
|
|
bottom: 0;
|
|
transform: rotate(180deg);
|
|
}
|
|
|
|
.print-frame img {
|
|
display: block;
|
|
margin: 0 auto;
|
|
border-radius: 0;
|
|
box-shadow: none;
|
|
position: relative;
|
|
z-index: 2;
|
|
}
|
|
</style>
|
|
<div class="centered-flex">
|
|
<div class="form-card">
|
|
<center>
|
|
<h2 style="margin-top:0.2em;">😺 CatNote 🖨️</h2>
|
|
</center>
|
|
<form method=post enctype=multipart/form-data>
|
|
<textarea name=md placeholder="Ingrese Markdown aquí...">{{ default_md }}</textarea><br>
|
|
<div class="buttons">
|
|
<button type=submit name="generate">📷 Generar</button>
|
|
<button type=submit name="print">🖨️ Imprimir</button>
|
|
</div>
|
|
</form>
|
|
{% if printed %}
|
|
<div class="status-msg">✅ Enviado a impresora</div>
|
|
{% endif %}
|
|
{% if error %}
|
|
<div class="status-msg status-err">⚠️ {{ error }}</div>
|
|
{% endif %}
|
|
</div>
|
|
<div class="preview-card">
|
|
{% if img %}
|
|
<h3 style="margin-top:0.1em;margin-bottom:0.6em;">Vista previa</h3>
|
|
<div class="print-frame">
|
|
<img src="data:image/png;base64,{{ img }}">
|
|
</div>
|
|
{% else %}
|
|
<p style="opacity:.6;">Su vista previa aparecerá aquí</p>
|
|
{% endif %}
|
|
</div>
|
|
<div class="markdown-ref">
|
|
<h4>Referencia rápida de Markdown</h4>
|
|
<ul>
|
|
<li><b>Negrita:</b> <code>**texto**</code></li>
|
|
<li><b>Cursiva:</b> <code>*texto*</code></li>
|
|
<li><b>Negrita y cursiva:</b> <code>***texto***</code></li>
|
|
<li><b>Encabezado grande:</b> <code># Título</code></li>
|
|
<li><b>Encabezado mediano:</b> <code>## Título</code></li>
|
|
<li><b>Encabezado chico:</b> <code>### Título</code></li>
|
|
<li><b>Lista con viñetas:</b> <code>- Elemento</code></li>
|
|
<li><b>Lista numerada:</b> <code>1. Elemento</code></li>
|
|
<li><b>Salto de línea:</b> Deje una línea vacía</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
'''
|
|
|
|
def parse_line(line):
|
|
if re.match(r'^\s*---\s*$', line):
|
|
return ('hr', [])
|
|
header_match = re.match(r"^(#{1,3}) +(.*)", line)
|
|
if header_match:
|
|
header_level = len(header_match.group(1))
|
|
line = header_match.group(2)
|
|
return ('header', header_level, parse_segments(line))
|
|
bullet_match = re.match(r"^\s*([-*\u2022]) +(.*)", line)
|
|
if bullet_match:
|
|
return ('bullet', parse_segments(bullet_match.group(2)))
|
|
ordered_match = re.match(r"^\s*(\d+)\. +(.*)", line)
|
|
if ordered_match:
|
|
return ('ordered', int(ordered_match.group(1)), parse_segments(ordered_match.group(2)))
|
|
return ('text', parse_segments(line))
|
|
|
|
def parse_segments(line):
|
|
# Handle escaped asterisks: replace them with a placeholder
|
|
line = line.replace(r'\*', '\x07')
|
|
|
|
# Apply formatting
|
|
bi = re.findall(r"\*\*\*(.+?)\*\*\*", line)
|
|
for x in bi:
|
|
line = line.replace(f"***{x}***", f"\x01{x}\x02")
|
|
b = re.findall(r"\*\*(.+?)\*\*", line)
|
|
for x in b:
|
|
line = line.replace(f"**{x}**", f"\x03{x}\x04")
|
|
i = re.findall(r"\*(.+?)\*", line)
|
|
for x in i:
|
|
line = line.replace(f"*{x}*", f"\x05{x}\x06")
|
|
|
|
# Split into styled segments
|
|
segments = []
|
|
i = 0
|
|
while i < len(line):
|
|
if line[i] == '\x01':
|
|
i += 1
|
|
start = i
|
|
while i < len(line) and line[i] != '\x02': i += 1
|
|
segments.append(('bolditalic', line[start:i]))
|
|
i += 1
|
|
elif line[i] == '\x03':
|
|
i += 1
|
|
start = i
|
|
while i < len(line) and line[i] != '\x04': i += 1
|
|
segments.append(('bold', line[start:i]))
|
|
i += 1
|
|
elif line[i] == '\x05':
|
|
i += 1
|
|
start = i
|
|
while i < len(line) and line[i] != '\x06': i += 1
|
|
segments.append(('italic', line[start:i]))
|
|
i += 1
|
|
else:
|
|
start = i
|
|
while i < len(line) and line[i] not in '\x01\x03\x05': i += 1
|
|
if i > start:
|
|
segments.append(('text', line[start:i]))
|
|
|
|
# Restore literal asterisks
|
|
segments = [(style, text.replace('\x07', '*')) for style, text in segments]
|
|
return segments
|
|
|
|
def font_for_style(style, font, font_bold, font_italic, font_bolditalic):
|
|
if style == 'bolditalic':
|
|
return font_bolditalic or font_bold or font_italic or font
|
|
elif style == 'bold':
|
|
return font_bold
|
|
elif style == 'italic':
|
|
return font_italic
|
|
else:
|
|
return font
|
|
|
|
def wrap_segments(segments, font, font_bold, font_italic, font_bolditalic, max_width, start_x=0):
|
|
line = []
|
|
x = start_x
|
|
for style, text in segments:
|
|
words = re.split(r'(\s+)', text)
|
|
for word in words:
|
|
if word == '':
|
|
continue
|
|
f = font_for_style(style, font, font_bold, font_italic, font_bolditalic)
|
|
w = f.getbbox(word)[2] - f.getbbox(word)[0]
|
|
if x + w > max_width and line:
|
|
yield line
|
|
line = []
|
|
x = start_x
|
|
line.append((style, word))
|
|
x += w
|
|
if line:
|
|
yield line
|
|
|
|
def render(md):
|
|
font = ImageFont.truetype(FONT_PATH, FONT_SIZE)
|
|
font_bold = ImageFont.truetype(FONT_PATH_BOLD, FONT_SIZE)
|
|
font_italic = ImageFont.truetype(FONT_PATH_OBLIQUE, FONT_SIZE)
|
|
try:
|
|
font_bolditalic = ImageFont.truetype(FONT_PATH_BOLDITALIC, FONT_SIZE)
|
|
except:
|
|
font_bolditalic = None
|
|
font_h1 = ImageFont.truetype(FONT_PATH_BOLD, HEADER_SIZE_1)
|
|
font_h2 = ImageFont.truetype(FONT_PATH_BOLD, HEADER_SIZE_2)
|
|
font_h3 = ImageFont.truetype(FONT_PATH_BOLD, HEADER_SIZE_3)
|
|
lines_out = []
|
|
for src_line in md.splitlines():
|
|
if src_line.strip() == '':
|
|
lines_out.append(('blank', []))
|
|
continue
|
|
tag = parse_line(src_line)
|
|
if tag[0] == 'hr':
|
|
lines_out.append(('hr',))
|
|
elif tag[0] == 'header':
|
|
header_level = tag[1]
|
|
segments = tag[2]
|
|
if header_level == 1:
|
|
font_h = font_h1
|
|
size_h = HEADER_SIZE_1
|
|
elif header_level == 2:
|
|
font_h = font_h2
|
|
size_h = HEADER_SIZE_2
|
|
else:
|
|
font_h = font_h3
|
|
size_h = HEADER_SIZE_3
|
|
for wrapped in wrap_segments(segments, font_h, font_h, font_h, font_h, IMAGE_WIDTH):
|
|
lines_out.append(('header', wrapped, font_h, size_h))
|
|
elif tag[0] == 'bullet':
|
|
segments = tag[1]
|
|
bullet_font = font
|
|
bullet_w = bullet_font.getbbox(BULLET_CHAR)[2] - bullet_font.getbbox(BULLET_CHAR)[0]
|
|
wrapped_lines = list(wrap_segments(segments, font, font_bold, font_italic, font_bolditalic, IMAGE_WIDTH - bullet_w, start_x=0))
|
|
for i, wrapped in enumerate(wrapped_lines):
|
|
if i == 0:
|
|
lines_out.append(('bullet', wrapped, bullet_font, FONT_SIZE, True, bullet_w))
|
|
else:
|
|
lines_out.append(('bullet', wrapped, bullet_font, FONT_SIZE, False, bullet_w))
|
|
elif tag[0] == 'ordered':
|
|
idx, segments = tag[1], tag[2]
|
|
num_str = f"{idx}. "
|
|
number_font = font
|
|
num_w = number_font.getbbox(num_str)[2] - number_font.getbbox(num_str)[0]
|
|
wrapped_lines = list(wrap_segments(segments, font, font_bold, font_italic, font_bolditalic, IMAGE_WIDTH - num_w, start_x=0))
|
|
for i, wrapped in enumerate(wrapped_lines):
|
|
if i == 0:
|
|
lines_out.append(('ordered', wrapped, number_font, FONT_SIZE, num_str, True, num_w))
|
|
else:
|
|
lines_out.append(('ordered', wrapped, number_font, FONT_SIZE, num_str, False, num_w))
|
|
else: # normal text
|
|
segments = tag[1]
|
|
for wrapped in wrap_segments(segments, font, font_bold, font_italic, font_bolditalic, IMAGE_WIDTH):
|
|
lines_out.append(('text', wrapped, font, FONT_SIZE))
|
|
|
|
height = sum(
|
|
item[3] if item[0] in ('header', 'text', 'bullet', 'ordered') else
|
|
10 if item[0] == 'hr' else
|
|
FONT_SIZE
|
|
for item in lines_out
|
|
) + 10
|
|
|
|
image = Image.new("L", (IMAGE_WIDTH, height), 255)
|
|
draw = ImageDraw.Draw(image)
|
|
y = 0
|
|
for item in lines_out:
|
|
if item[0] == 'blank':
|
|
y += FONT_SIZE
|
|
elif item[0] == 'hr':
|
|
draw.line((0, y + 5, IMAGE_WIDTH, y + 5), fill=0, width=2)
|
|
y += 10
|
|
elif item[0] == 'header':
|
|
segments, fnt, sz = item[1], item[2], item[3]
|
|
x = 0
|
|
for style, text in segments:
|
|
draw.text((x, y), text, font=fnt, fill=0)
|
|
x += fnt.getbbox(text)[2] - fnt.getbbox(text)[0]
|
|
y += sz
|
|
elif item[0] == 'bullet':
|
|
segments, bullet_font, sz, show_bullet, bullet_w = item[1], item[2], item[3], item[4], item[5]
|
|
x = 0
|
|
if show_bullet:
|
|
draw.text((x, y), BULLET_CHAR, font=bullet_font, fill=0)
|
|
x += bullet_w
|
|
else:
|
|
x += bullet_w
|
|
for style, text in segments:
|
|
f = font_for_style(style, bullet_font, font_bold, font_italic, font_bolditalic)
|
|
draw.text((x, y), text, font=f, fill=0)
|
|
x += f.getbbox(text)[2] - f.getbbox(text)[0]
|
|
y += sz
|
|
elif item[0] == 'ordered':
|
|
segments, number_font, sz, num_str, show_num, num_w = item[1], item[2], item[3], item[4], item[5], item[6]
|
|
x = 0
|
|
if show_num:
|
|
draw.text((x, y), num_str, font=number_font, fill=0)
|
|
x += num_w
|
|
else:
|
|
x += num_w
|
|
for style, text in segments:
|
|
f = font_for_style(style, number_font, font_bold, font_italic, font_bolditalic)
|
|
draw.text((x, y), text, font=f, fill=0)
|
|
x += f.getbbox(text)[2] - f.getbbox(text)[0]
|
|
y += sz
|
|
elif item[0] == 'text':
|
|
segments, fnt, sz = item[1], item[2], item[3]
|
|
x = 0
|
|
for style, text in segments:
|
|
f = font_for_style(style, font, font_bold, font_italic, font_bolditalic)
|
|
draw.text((x, y), text, font=f, fill=0)
|
|
x += f.getbbox(text)[2] - f.getbbox(text)[0]
|
|
y += sz
|
|
return image
|
|
|
|
@app.route("/", methods=["GET", "POST"])
|
|
def index():
|
|
img_data = None
|
|
md = ""
|
|
printed = False
|
|
error = None
|
|
if request.method == "POST":
|
|
md = request.form["md"]
|
|
image = render(md)
|
|
buf = io.BytesIO()
|
|
image.save(buf, format="PNG")
|
|
buf.seek(0)
|
|
import base64
|
|
img_data = base64.b64encode(buf.getvalue()).decode()
|
|
# If print button pressed, send to catprinter-ble
|
|
if "print" in request.form:
|
|
try:
|
|
with tempfile.NamedTemporaryFile(suffix=".png", delete=True) as tmpfile:
|
|
image.save(tmpfile, format="PNG")
|
|
tmpfile.flush()
|
|
# Run the catprinter-ble command
|
|
# You can set dither method here if desired
|
|
result = subprocess.run([
|
|
"sudo",
|
|
"./catprinter-ble",
|
|
"-mode", "1bpp",
|
|
"-intensity", "100",
|
|
tmpfile.name
|
|
], capture_output=True, text=True, timeout=90)
|
|
if result.returncode != 0:
|
|
error = f"Printer error: {result.stderr or result.stdout}"
|
|
else:
|
|
printed = True
|
|
except Exception as e:
|
|
error = f"Failed to print: {e}"
|
|
return render_template_string(HTML_FORM, img=img_data, default_md=md,
|
|
printed=printed, error=error)
|
|
|
|
@app.route('/manifest.json')
|
|
def manifest():
|
|
return send_from_directory('static', 'manifest.json')
|
|
|
|
@app.route('/icon512_maskable.png')
|
|
def icon_maskable():
|
|
return send_from_directory('static', 'icon512_maskable.png')
|
|
|
|
@app.route('/icon512_rounded.png')
|
|
def icon_rounded():
|
|
return send_from_directory('static', 'icon512_rounded.png')
|
|
|
|
if __name__ == "__main__":
|
|
app.run(host="0.0.0.0")
|