Add Persian Calendar to Waybar (Omarchy)

waybar-persian-calendar.md

Requirements

This is tested on Omarchy Linux which uses waybar as the default bar. It should work on any distro that supports waybar.

Install jcal:

yay -S jcal

Date Script

This script will be used to display the date and the tooltip in the waybar while keeping the colors. You can store it anywhere but I assume ~/jalai_date (update everywhere accordingly).

#!/usr/bin/env python3

import subprocess
import re
import json

# ANSI SGR color → Pango attribute mapping (Dayfox light theme)
ANSI_FG = {
    '31': '#D14D41',  # red → Fridays/holidays
    # '37' (white) intentionally skipped — invisible on light bg, use tooltip default
}
ANSI_BG = {
    '47': '#CECDC3',  # white bg → today highlight
}


def escape_xml(s):
    return s.replace('&', '&amp;').replace('<', '&lt;').replace('>', '&gt;')


def ansi_to_pango(text):
    result = []
    span_depth = 0
    pattern = re.compile(r'\x1b\[([0-9;]*)m')
    last_end = 0

    for match in pattern.finditer(text):
        result.append(escape_xml(text[last_end:match.start()]))
        code_str = match.group(1)

        if code_str in ('0', ''):
            if span_depth > 0:
                result.append('</span>' * span_depth)
                span_depth = 0
        else:
            fg = None
            bg = None
            for code in code_str.split(';'):
                if code in ANSI_FG:
                    fg = ANSI_FG[code]
                elif code in ANSI_BG:
                    bg = ANSI_BG[code]

            attrs = []
            if fg:
                attrs.append(f"color='{fg}'")
            if bg:
                attrs.append(f"background='{bg}'")

            if attrs:
                result.append(f"<span {' '.join(attrs)}>")
                span_depth += 1

        last_end = match.end()

    result.append(escape_xml(text[last_end:]))
    if span_depth > 0:
        result.append('</span>' * span_depth)

    return ''.join(result)


text = subprocess.check_output(['jdate', '+%W'], text=True).strip()

cal_raw = subprocess.check_output(['jcal', '-p'], text=True).rstrip('\n')
cal_pango = ansi_to_pango(cal_raw)

tooltip = f"<small>{cal_pango}</small>"

print(json.dumps({"text": text, "tooltip": tooltip}))

Waybar Config

Update waybar config at ~/.config/waybar/config.jsonc:

{
  // ... other configs ...
  "modules-center": ["custom/persian", ...],
  // ... other configs ...
  "custom/persian": {
    "exec": "~/jalali_date",
    "interval": 60,
    "return-type": "json"
  }
}

Reload waybar in Omarchy by pressing Super+Shift+Space twice.

Waybar Style

To add more space from the clock module you can add this to the ~/.config/waybar/style.css:

#clock {
  margin-left: 20px;
}