nodes/theme.py

Part of You’re the OS.

"""Colour palette and process-face glyph map.

Mirrors the upstream palette and its starvation-emoji ordering. The palette is
kept whole (a few entries are unused here) so the two can be compared entry for
entry; the emoji PNGs are substituted with ASCII faces, so the port ships with
no image assets at all.
"""

from __future__ import annotations


# RGBA in 0..1, opaque
def _rgb(r: int, g: int, b: int, a: float = 1.0) -> tuple[float, float, float, float]:
    return (r / 255.0, g / 255.0, b / 255.0, a)


BLACK = _rgb(0, 0, 0)
ALMOST_BLACK = _rgb(25, 25, 25)
DARK_BG = _rgb(0, 0, 0)  # background: match upstream's pure black
WHITE = _rgb(255, 255, 255)
GREY = _rgb(128, 128, 128)
DARK_GREY = _rgb(99, 102, 106)
LIGHT_GREY = _rgb(211, 211, 211)
BLUE = _rgb(0, 0, 255)
LIGHT_BLUE = _rgb(176, 216, 230)
TEAL = _rgb(0, 128, 128)
GREEN = _rgb(0, 255, 0)
YELLOW = _rgb(255, 255, 0)
ORANGE = _rgb(255, 165, 0)
RED = _rgb(255, 0, 0)
DARK_RED = _rgb(139, 0, 0)
DARKER_RED = _rgb(80, 0, 0)
LIME_GREEN = _rgb(177, 204, 51)

# Indexed by Process.starvation_level (0..6).
STARVATION_COLOURS = [
    GREEN,
    YELLOW,
    ORANGE,
    RED,
    DARK_RED,
    DARKER_RED,
    DARK_GREY,
]

# ASCII face glyphs used in place of upstream's emoji PNGs (zero asset deps).
STARVATION_FACES = [
    ":D",  # grinning
    ":)",  # slightly smiling
    ":|",  # neutral
    ":(",  # frowning
    ":'(",  # crying
    "x(",  # cold
    "X_X",  # skull
]

GRACEFUL_FACE = ":3"  # stands in for upstream's haloed "happy departure" emoji

__all__ = [
    "BLACK",
    "ALMOST_BLACK",
    "DARK_BG",
    "WHITE",
    "GREY",
    "DARK_GREY",
    "LIGHT_GREY",
    "BLUE",
    "LIGHT_BLUE",
    "TEAL",
    "GREEN",
    "YELLOW",
    "ORANGE",
    "RED",
    "DARK_RED",
    "DARKER_RED",
    "LIME_GREEN",
    "STARVATION_COLOURS",
    "STARVATION_FACES",
    "GRACEFUL_FACE",
]