Conky Horizontal Calendar

conky.conf

conky.config = {
    -- Basic Settings
    background = false,
    update_interval = 1800,

    -- Window/Display Settings
    own_window = true,
    own_window_type = 'normal',
    own_window_transparent = true,
    own_window_hints = 'undecorated,below,sticky,skip_taskbar,skip_pager',
    double_buffer = true,
    minimum_width = 620,
    minimum_height = 40,
    maximum_width = 1020,

    -- Text and Font Settings
    use_xft = true,
    xftalpha = 0.2,
    font = '123:size=8',
    default_color = 'white',
    uppercase = false,
    override_utf8_locale = true,
    text_buffer_size = 2048,

    -- Alignment and Positioning
    alignment = 'top_middle',
    gap_x = 5,
    gap_y = 10,

    -- Performance and Optimization
    cpu_avg_samples = 2,
    net_avg_samples = 2,
    no_buffers = true,
    imlib_cache_size = 0,

    -- Drawing/Aesthetic Settings 
    draw_shades = false,
    draw_outline = false,
    draw_borders = false,
    draw_graph_borders = false,
    border_inner_margin = 0,
    border_outer_margin = 0,

    -- Misc
    use_spacer = 'right',
}
conky.text = [[
${goto 16}${alignc}${font Liberation Sans:size=18}${time %A, %B %-d, %Y   Day: %j   Week: %U}
${voffset -15}${goto 14}${color}${hr 1}
${voffset -15}$color${execpi 36000 ./hcal.sh}${color}
]]

hcal.sh

#!/bin/bash
# Script to display a horizontal calendar on conky

TODAY=$(date +%d)
TOPLINE=" "
OVER=" "
REST=" "

# -------- Number of days in the month (Variable 'b') -----------#
a=$(date +%-Y)
e1=$((a % 400))
e2=$((a % 100))
e3=$((a % 4))

if [ "$e1" -eq 0 ]; then
    c=1
elif [ "$e2" -eq 0 ]; then
    c=0
elif [ "$e3" -eq 0 ]; then
    c=1
else
    c=0
fi

p=$(date +%-m)

# Determine the length of the current month ('b')
if [ "$c" -eq 0 ]; then # Not a leap year
    if [ "$p" -eq 2 ]; then
        b=28 # February
    elif [ "$p" -eq 11 ] || [ "$p" -eq 4 ] || [ "$p" -eq 6 ] || [ "$p" -eq 9 ]; then
        b=30
    else
        b=31
    fi
else # Leap year
    if [ "$p" -eq 2 ]; then
        b=29 # February
    elif [ "$p" -eq 11 ] || [ "$p" -eq 4 ] || [ "$p" -eq 6 ] || [ "$p" -eq 9 ]; then
        b=30
    else
        b=31
    fi
fi

#------- Days of the month ----------#
i=1
# Days before today
if [ "$TODAY" -ne 1 ]; then
    while [ "$i" -lt "$TODAY" ]; do
        if [ "$i" -lt 10 ]; then
            OVER="$OVER 0$i"
        else
            OVER="$OVER $i"
        fi
        i=$((i+1))
    done
fi
i=$((i+1))

# Days after today
if [ "$TODAY" -ne "$b" ]; then
    # We use -le $b to ensure the last day is captured
    while [ "$i" -le "$b" ]; do 
        if [ "$i" -lt 10 ]; then
            REST="$REST 0$i"
        else
            REST="$REST $i"
        fi
        i=$((i+1))
    done
fi

#---Abbreviated weekday names (Mo, Tu, etc.) -------#

# FIX: Get the day of the week for the 1st of the current month (1=Mon, 7=Sun)
FIRST_DAY_OF_MONTH_INDEX=$(date +%u --date="$(date +%Y-%m-01)")
y=$FIRST_DAY_OF_MONTH_INDEX

# Preserve 'b' for the loop counter
month_length=$b

# Loop through the days of the month to build the weekday line
while [ "$month_length" -gt 0 ]; do
    case "$y" in
    1) TOPLINE="$TOPLINE Mo";;
    2) TOPLINE="$TOPLINE Tu";;
    3) TOPLINE="$TOPLINE We";;
    4) TOPLINE="$TOPLINE Th";;
    5) TOPLINE="$TOPLINE Fr";;
    6) TOPLINE="$TOPLINE Sa";;
    7) TOPLINE="$TOPLINE Su";;
    esac
    
    month_length=$((month_length-1))
    y=$((y+1))
    if [ "$y" -eq 8 ]; then
        y=1
    fi
done

# --- Output ---
# 1. Build the Weekday line output string (TOP_OUTPUT)
TOP_OUTPUT=$(echo '${font mono:Bold:size=10}'"${TOPLINE}" | sed 's/Su/${color red}Su${color}/g' | sed 's/Sa/${color red}Sa${color}/g')

# 2. Build the Date line output string (BOTTOM_OUTPUT)
BOTTOM_OUTPUT='\n${voffset 4}${font mono:Bold:size=10}${color C28C3A}'"$OVER"'${color 5BED1B}'" $TODAY"'${color}'${REST:1}

# 3. Echo the combined result using -e to interpret the \n character
echo -e "$TOP_OUTPUT$BOTTOM_OUTPUT"