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Bebop/bebop/colors.py

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"""Color definitions for curses."""
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import curses
import logging
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from enum import IntEnum
class ColorPair(IntEnum):
# Colors for specific Gemtext line type.
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NORMAL = 0
ERROR = 1
LINK = 2
LINK_ID = 3
TITLE_1 = 4
TITLE_2 = 5
TITLE_3 = 6
PREFORMATTED = 7
BLOCKQUOTE = 8
# Colors for other usage in the browser.
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DEBUG = 9
LINK_PREVIEW = 10
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A_ITALIC = curses.A_ITALIC if hasattr(curses, "A_ITALIC") else curses.A_NORMAL
def init_colors(bg: int =-1):
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curses.use_default_colors()
curses.init_pair(ColorPair.DEBUG, curses.COLOR_BLACK, curses.COLOR_GREEN)
try:
curses.init_pair(ColorPair.NORMAL, curses.COLOR_WHITE, bg)
curses.init_pair(ColorPair.ERROR, curses.COLOR_RED, bg)
curses.init_pair(ColorPair.LINK, curses.COLOR_CYAN, bg)
curses.init_pair(ColorPair.LINK_ID, curses.COLOR_WHITE, bg)
curses.init_pair(ColorPair.TITLE_1, curses.COLOR_GREEN, bg)
curses.init_pair(ColorPair.TITLE_2, curses.COLOR_MAGENTA, bg)
curses.init_pair(ColorPair.TITLE_3, curses.COLOR_MAGENTA, bg)
curses.init_pair(ColorPair.PREFORMATTED, curses.COLOR_YELLOW, bg)
curses.init_pair(ColorPair.BLOCKQUOTE, curses.COLOR_BLUE, bg)
curses.init_pair(ColorPair.LINK_PREVIEW, curses.COLOR_WHITE, bg)
except curses.error:
logging.error("Failed to init colors.")
if bg == -1:
logging.debug("Retrying with black background…")
init_colors(bg=curses.COLOR_BLACK)