generate.py

"""Export the favicon and white OG artwork from the brand contours."""
from copy import deepcopy
from pathlib import Path
import struct
import subprocess
import xml.etree.ElementTree as E

ROOT = Path(__file__).resolve().parent
(ROOT / 'favicon').mkdir(exist_ok=True)
NS = '{http://www.w3.org/2000/svg}'
E.register_namespace('', NS[1:-1])
logo = E.parse(ROOT.parent / 'art/logo-clean.svg').getroot()
k = deepcopy(list(logo)[-3])


def save(path, root):
    path.write_text(E.tostring(root, encoding='unicode') + '\n')


def icon(square=False):
    root = E.Element(NS + 'svg', {'viewBox': '0 0 64 64', 'width': '64', 'height': '64', 'role': 'img', 'aria-label': 'KIT'})
    E.SubElement(root, NS + 'rect', {'width': '64', 'height': '64', 'rx': '0' if square else '14', 'fill': '#0067ed'})
    glyph = deepcopy(k)
    glyph.set('fill', 'white')
    box = E.SubElement(root, NS + 'svg', {'x': '10', 'y': '17', 'width': '44', 'height': '30', 'viewBox': '7.62 50.66 30.5 19.79'})
    box.append(glyph)
    return root


save(ROOT / 'favicon/favicon.svg', icon())
for size in [16, 32, 48]:
    subprocess.run(['rsvg-convert', '-w', str(size), '-h', str(size), '-o', str(ROOT / f'favicon/favicon-{size}.png'), str(ROOT / 'favicon/favicon.svg')], check=True)
# ICO embeds the exact PNG images and supplies all three sizes in one file.
images = [(n, (ROOT / f'favicon/favicon-{n}.png').read_bytes()) for n in [16, 32, 48]]
offset = 6 + 16 * len(images)
entries = []
for size, data in images:
    entries.append(struct.pack('<BBBBHHII', size, size, 0, 0, 1, 32, len(data), offset))
    offset += len(data)
(ROOT / 'favicon/favicon.ico').write_bytes(struct.pack('<HHH', 0, 1, len(images)) + b''.join(entries) + b''.join(data for _, data in images))
save(ROOT / 'favicon/apple-touch-icon.svg', icon(square=True))
subprocess.run(['rsvg-convert', '-w', '180', '-h', '180', '-o', str(ROOT / 'favicon/apple-touch-icon.png'), str(ROOT / 'favicon/apple-touch-icon.svg')], check=True)

shapes = E.parse(ROOT.parent / 'art/shapes/composition-05.svg').getroot()
scene = next(e for e in shapes if e.tag == NS + 'svg')
root = E.Element(NS + 'svg', {'width': '860', 'height': '560', 'viewBox': '-430 -430 860 560'})
for child in scene:
    root.append(deepcopy(child))
save(ROOT / 'og/shapes.svg', root)
root = E.Element(NS + 'svg', {'width': '665', 'height': '197.9', 'viewBox': '7.62 50.66 66.5 19.79'})
for child in list(logo)[-3:]:
    glyph = deepcopy(child)
    glyph.set('fill', 'white')
    root.append(glyph)
save(ROOT / 'og/wordmark.svg', root)
print('Generated favicon files and white OG artwork.')