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#!/usr/bin/env python3
"""Generate the Dupre palette preview HTML from dupre-palette.el.
Reads the (name "#hex") pairs straight from the palette source so the preview
can't drift from the theme. Groups colors into one row per family (by name
prefix, e.g. gray-2/gray/gray+1 share the "gray" row), with fixed-width
swatches so columns line up across rows.
Regenerate the PNG from the HTML afterwards:
google-chrome-stable --headless=new --screenshot=themes/dupre-palette.png \\
--window-size=975,1520 --hide-scrollbars --default-background-color=151311FF \\
"file://$PWD/themes/dupre-color-palette.html"
"""
import re
from pathlib import Path
HERE = Path(__file__).resolve().parent
SRC = HERE / "dupre-palette.el"
OUT = HERE / "dupre-color-palette.html"
text = open(SRC).read()
# Only the dupre-palette defconst has (name "#hex") pairs; semantic mappings are
# (name colorname) with no hex, so this regex selects exactly the base palette.
pairs = re.findall(r'\(([a-z0-9]+(?:[+\-]\d+)?(?:-[a-z]+)?)\s+"(#[0-9a-fA-F]{6})"\)', text)
def family(name):
m = re.match(r'^([a-z]+(?:-[a-z]+)??)(?:[+\-]\d+)?$', name)
return m.group(1) if m else name
# Group consecutive same-family entries (palette.el already orders them so).
rows, cur_fam, cur = [], None, []
for name, hexv in pairs:
fam = family(name)
if fam != cur_fam:
if cur:
rows.append((cur_fam, cur))
cur_fam, cur = fam, []
cur.append((name, hexv))
if cur:
rows.append((cur_fam, cur))
def swatch(name, hexv):
return (f' <div class="swatch">'
f'<div class="box" style="background:{hexv}"></div>'
f'<div class="name">{name}</div>'
f'<div class="hex">{hexv}</div></div>')
body = []
for fam, items in rows:
body.append(' <div class="family">')
body.append(f' <div class="fam">{fam}</div>')
body.extend(swatch(n, h) for n, h in items)
body.append(' </div>')
html = f"""<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Dupre Theme Color Palette</title>
<style>
body {{ font-family: 'Courier New', monospace; background: #151311; color: #f0fef0;
padding: 28px; margin: 0; width: max-content; }}
h1 {{ font-size: 20px; font-weight: bold; margin: 0 0 24px; }}
.family {{ display: flex; align-items: flex-start; gap: 12px; margin-bottom: 14px; }}
.fam {{ width: 96px; text-align: right; padding-top: 46px; color: #b4b1a2;
font-size: 13px; flex-shrink: 0; }}
.swatch {{ width: 120px; flex-shrink: 0; }}
.box {{ width: 112px; height: 112px; border: 1px solid #474544; border-radius: 3px; }}
.name {{ font-weight: bold; color: #f0fef0; font-size: 12px; margin-top: 5px; }}
.hex {{ color: #969385; font-size: 11px; }}
</style>
</head>
<body>
<h1>Dupre Theme Color Palette</h1>
{chr(10).join(body)}
</body>
</html>
"""
open(OUT, "w").write(html)
print(f"wrote {OUT}: {len(pairs)} colors in {len(rows)} family rows")
print("families:", ", ".join(f for f, _ in rows))
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