OXYGENHUB
◆ main oxygen / packaging / haikuports / make-icons.py
6.1 KiB · Python · last changed HaikuDepot icons for oxy and oh (HVIF and PNGs) and the script that draws them (refs #157) 6 days ago source blame history raw
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#!/usr/bin/env python3
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"""HaikuDepot icons for oxy and oh (oxygen#157): the Oxygen mark as Haiku's
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vector icon format (HVIF), and as SVG to render the 16, 32 and 64 px PNGs.
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A family of two (Andy, 2026-10-29): Oxygen (oxy, the Oxygen VCS extension)
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is the mark on a pale rounded tile with a blue right dot; OxygenHub (oh, the
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OxygenHub extension) is the mark on the hub's dark tile with a white one, as
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oxygenhub/assets/icons/oxygenhub.svg. Each keeps its edge on light and dark
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backgrounds alike.
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    make-icons.py OUTDIR    writes oxy.hvif, oh.hvif, oxy.svg, oh.svg
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HVIF as Haiku's FlatIconImporter reads it: "ncif", then styles, paths and
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shapes, each a count byte and its items; coordinates in a 64-unit canvas.
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"""
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import math
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import struct
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import sys
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CYAN, BLUE, WHITE, TILE = (0x00, 0xF0, 0xFF), (0x00, 0x72, 0xFF), (0xFF, 0xFF, 0xFF), (0x07, 0x0C, 0x18)
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LIGHT, EDGE = (0xF2, 0xF7, 0xFF), (0xC9, 0xDC, 0xF5)
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K = 0.5522847498  # a circle's quarter as one cubic Bézier
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def coord(v):
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    if v == int(v) and -32 <= v <= 95:
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        return bytes([int(v) + 32])
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    n = int(round((v + 128.0) * 102.0))
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    return bytes([(n >> 8) | 0x80, n & 0xFF])
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def float24(v):
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    if v == 0:
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        return b"\0\0\0"
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    bits = struct.unpack(">I", struct.pack(">f", v))[0]
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    sign, exp, man = bits >> 31, ((bits >> 23) & 0xFF) - 127, bits & 0x7FFFFF
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    if not -32 <= exp < 32:
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        raise ValueError(f"{v} does not fit a float24")
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    n = (sign << 23) | ((exp + 32) << 17) | (man >> 6)
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    return n.to_bytes(3, "big")
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def solid(rgb):
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    return bytes([3, *rgb])  # STYLE_TYPE_SOLID_COLOR_NO_ALPHA
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def linear(p1, p2, stops):
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    """A linear gradient from p1 to p2: gradient space runs x from -64 to 64."""
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    dx, dy = (p2[0] - p1[0]) / 128.0, (p2[1] - p1[1]) / 128.0
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    mx, my = (p1[0] + p2[0]) / 2, (p1[1] + p2[1]) / 2
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    out = bytes([2, 0, (1 << 1) | (1 << 2), len(stops)])  # gradient, linear, transform | no alpha
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    for v in (dx, dy, -dy, dx, mx, my):
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        out += float24(v)
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    for off, rgb in stops:
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        out += bytes([off, *rgb])
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    return out
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def line(a, b):
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    return bytes([1 << 3, 2]) + coord(a[0]) + coord(a[1]) + coord(b[0]) + coord(b[1])  # no curves, open
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def curve_path(points, closed=True):
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    """points: (x, y, in_x, in_y, out_x, out_y)."""
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    out = bytes([(1 << 1) if closed else 0, len(points)])
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    for p in points:
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        for v in p:
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            out += coord(v)
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    return out
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def circle(cx, cy, r):
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    k = r * K
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    pts = [(cx, cy - r, cx - k, cy - r, cx + k, cy - r), (cx + r, cy, cx + r, cy - k, cx + r, cy + k),
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           (cx, cy + r, cx + k, cy + r, cx - k, cy + r), (cx - r, cy, cx - r, cy + k, cx - r, cy - k)]
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    return curve_path(pts)
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def rounded(x, y, w, h, r):
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    k = r * (1 - K)
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    x2, y2 = x + w, y + h
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    pts = [
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        (x + r, y, x + k, y, x + r, y), (x2 - r, y, x2 - r, y, x2 - k, y),
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        (x2, y + r, x2, y + k, x2, y + r), (x2, y2 - r, x2, y2 - r, x2, y2 - k),
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        (x2 - r, y2, x2 - k, y2, x2 - r, y2), (x + r, y2, x + r, y2, x + k, y2),
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        (x, y2 - r, x, y2 - k, x, y2 - r), (x, y + r, x, y + r, x, y + k),
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    ]
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    return curve_path(pts)
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def shape(style, paths, stroke=None, cap=0):
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    out = bytes([10, style, len(paths), *paths])
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    if stroke is None:
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        return out + bytes([0])
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    # has transformers: one stroke (width + 128, cap << 4 | round join, miter limit)
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    return out + bytes([1 << 4, 1, 23, int(round(stroke)) + 128, (cap << 4) | 2, 4])
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def mark(scale, ox, oy):
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    """The mark's geometry, scaled about its centre and moved to (ox, oy)."""
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    p = lambda x, y: (ox + x * scale, oy + y * scale)
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    return {
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        "top": (p(-11, -6), p(11, -6)), "bottom": (p(-11, 6), p(11, 6)),
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        "left": (p(-11, 0), 10 * scale), "right": (p(11, 0), 10 * scale),
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        "dot": 3.5 * scale, "stroke": 3 * scale, "grad": (p(-22, -11), p(22, 11)),
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    }
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def hvif(dark):
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    m = mark(1.0, 32, 32)
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    styles = [linear(*m["grad"], [(0, CYAN), (255, BLUE)]), solid(CYAN), solid(WHITE if dark else BLUE)]
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    paths = [line(*m["top"]), line(*m["bottom"]), circle(*m["left"][0], m["left"][1]),
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             circle(*m["right"][0], m["right"][1]), circle(*m["left"][0], m["dot"]), circle(*m["right"][0], m["dot"])]
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    if dark:
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        styles.append(solid(TILE))
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        paths.append(rounded(0, 0, 64, 64, 14))
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        tile = [shape(3, [6])]
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    else:
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        # A pale tile with a thin edge: the edge's colour, then the tile inset by it.
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        styles += [solid(EDGE), solid(LIGHT)]
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        paths += [rounded(0, 0, 64, 64, 14), rounded(1.5, 1.5, 61, 61, 12.5)]
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        tile = [shape(3, [6]), shape(4, [7])]
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    shapes = tile + [
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        shape(0, [0], m["stroke"], cap=2), shape(0, [1], m["stroke"], cap=2),
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        shape(0, [2], m["stroke"]), shape(0, [3], m["stroke"]),
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        shape(1, [4]), shape(2, [5]),
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    ]
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    out = b"ncif"
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    for section in (styles, paths, shapes):
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        out += bytes([len(section)]) + b"".join(section)
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    return out
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def svg(dark):
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    if dark:
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        bg, dot = '<rect width="64" height="64" rx="14" fill="#070c18"/>', "#FFFFFF"
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    else:
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        bg = '<rect width="64" height="64" rx="14" fill="#C9DCF5"/><rect x="1.5" y="1.5" width="61" height="61" rx="12.5" fill="#F2F7FF"/>'
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        dot = "#0072FF"
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    return f'''<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" width="64" height="64">
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  <defs>
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    <linearGradient id="g" gradientUnits="userSpaceOnUse" x1="-22" y1="-11" x2="22" y2="11">
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      <stop offset="0%" stop-color="#00F0FF"/>
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      <stop offset="100%" stop-color="#0072FF"/>
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    </linearGradient>
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  </defs>
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  {bg}
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  <g transform="translate(32 32)">
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    <path d="M -11 -6 L 11 -6" stroke="url(#g)" stroke-width="3" stroke-linecap="round"/>
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    <path d="M -11 6 L 11 6" stroke="url(#g)" stroke-width="3" stroke-linecap="round"/>
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    <circle cx="-11" cy="0" r="10" fill="none" stroke="url(#g)" stroke-width="3"/>
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    <circle cx="-11" cy="0" r="3.5" fill="#00F0FF"/>
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    <circle cx="11" cy="0" r="10" fill="none" stroke="url(#g)" stroke-width="3"/>
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    <circle cx="11" cy="0" r="3.5" fill="{dot}"/>
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  </g>
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</svg>
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'''
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out = sys.argv[1]
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for name, dark in (("oxy", False), ("oh", True)):
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    open(f"{out}/{name}.hvif", "wb").write(hvif(dark))
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    open(f"{out}/{name}.svg", "w").write(svg(dark))