Now Playing Conky, written in LUA

conkyrc

--[[
2024 Bleys
All scripts in the same directory!
Start the player via the player.sh script

]]
conky.config = {
-- — Conky settings

	background = false,
	update_interval = 1,
	total_run_times = 0,
	no_buffers = true,
	imlib_cache_size = 0,
	
	draw_graph_borders = true,
	draw_outline = false,

-- — Window specifications

	own_window = true,
    own_window_transparent = true,
	own_window_hints = 'undecorated,sticky,skip_taskbar,skip_pager,below',

	
	double_buffer = true,
--	minimum_width = 155, minimum_height = 205, --kompakt
	minimum_width = 400, minimum_height = 116, --lang


-- — Position on Desktop / Lage auf dem Desktop festlegen
	alignment = 'bottom_middle',
	gap_x = 20,
	gap_y = 60,
	
	border_inner_margin = 10,

-- Lua Load
	lua_load = './now.lua',
	lua_draw_hook_post = 'main',


};
conky.text = [[
 
]];

mpris.sh

#!/bin/bash
#
# Bleys 2023
# dependencies: urlencode, qdbus
# sudo apt install gridsite-client qdbus
#
#
Player=$1

if [ $(ps -C $Player -o pid=) ]; then
convertsec() 
	{
	    x=`expr $1 / 1000000`
	    s=`expr $x % 60`
	    x=`expr $x / 60`
	    m=`expr $x % 60`
	    printf "%02d:%02d\n" $m $s
	}

	POS=$(qdbus org.mpris.MediaPlayer2.$Player /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get org.mpris.MediaPlayer2.Player Position)
	TOTAL=$(qdbus org.mpris.MediaPlayer2.$Player /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get org.mpris.MediaPlayer2.Player Metadata | grep "^mpris:length" | awk '{print $2}')

		if [ -z $TOTAL ]
		then
            positionTime="00:00"
            lengthTime="00:00"
			length="stopped"	
			position=1		
		else
            positionTime=$(convertsec $POS)
            lengthTime=$(convertsec $TOTAL)
			length=$(($TOTAL/1000000))
			position=$(($POS/1000000))
		fi

	TEMP=$(qdbus org.mpris.MediaPlayer2.$Player /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get org.mpris.MediaPlayer2.Player Metadata | grep "artist:")
	artist=${TEMP##*:}
	TEMP=$(qdbus org.mpris.MediaPlayer2.$Player /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get org.mpris.MediaPlayer2.Player Metadata | grep "title:")
	title=${TEMP##*:}
	COVER=$(qdbus org.mpris.MediaPlayer2.$Player /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get org.mpris.MediaPlayer2.Player Metadata | grep "artUrl:")
    str="'"

    
	if [ -n "$COVER" -a $position -ge 1 ]; then
        if [ "$Player" == "vlc" ]; then 
            uri=$(urlencode -d "$COVER")
            COVER=${uri#*//}
            convert "$COVER" '/tmp/tmp.png'
        else
            convert "${COVER#*//}" '/tmp/tmp.png'
        fi
	fi

	vol=$(qdbus org.mpris.MediaPlayer2.$Player /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get org.mpris.MediaPlayer2.Player Volume)	
    echo $length";"$position";"$artist";"$title";"$positionTime";"$lengthTime";"$vol

fi

exit 0

now.lua

require 'cairo'
require "imlib2"
home_path = os.getenv ('HOME')
pt={}
pt['bg_color']=0xffffff
pt['bg_alpha']=0.3
pt['fg_color']=0xffffff
pt['fg_alpha']=1.0
pt['width']=194
pt['height']=6
pt['x']=180
pt['y']=15
vl={}
vl['bg_color']=0xffffff
vl['bg_alpha']=0.3
vl['fg_color']=0xffffff
vl['fg_alpha']=1.0
vl['width']=210
vl['height']=6
vl['x']=158
vl['y']=17
function rgb_to_rgba(color,alpha)
	return ((color / 0x10000) % 0x100) / 255., ((color / 0x100) % 0x100) / 255., (color % 0x100) / 255., alpha
end
function mysplit (inputstr, sep)
        if sep == nil then
                sep = ";"
        end
        local t={}
        for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
                table.insert(t, str)
        end
        return t
end
function draw_bg(cr,color,alpha,typ) -- zeichne Hintergrund Conky Fenster / draw Conky Area Background
    local corner_r=0
    local bg_color=color 

    local bg_alpha=alpha
	local w=conky_window.width
	local h=conky_window.height
	cairo_set_source_rgba(cr,rgb_to_rgba(bg_color,bg_alpha))
	cairo_move_to(cr,corner_r,0)
	cairo_line_to(cr,w-corner_r,0)
	cairo_curve_to(cr,w,0,w,0,w,corner_r)
	cairo_line_to(cr,w,h-corner_r)
	cairo_curve_to(cr,w,h,w,h,w-corner_r,h)
	cairo_line_to(cr,corner_r,h)
	cairo_curve_to(cr,0,h,0,h,0,h-corner_r)
	cairo_line_to(cr,0,corner_r)
	cairo_curve_to(cr,0,0,0,0,corner_r,0)
	cairo_close_path(cr)
	
    if typ==1 then
	    cairo_fill(cr)
    else
        cairo_stroke(cr)
    end
end 
function fDrawImage(cr,path,x,y,w,h)
    cairo_save (cr)
    local img =  cairo_image_surface_create_from_png(path)
    local w_img, h_img = cairo_image_surface_get_width(img), cairo_image_surface_get_height(img)
    cairo_translate (cr, x, y)
    cairo_scale (cr, w/w_img, h/h_img)
    cairo_set_source_surface (cr, img, -w_img/2, -h_img/2)
    cairo_paint (cr)
    cairo_surface_destroy (img)
    collectgarbage ()
    cairo_restore (cr)
end
function draw_bar(cr,pct,pt)
    local bgc, bga, fgc, fga=pt['bg_color'], pt['bg_alpha'], pt['fg_color'], pt['fg_alpha']
    local w=pct*pt['width']
    local x=pt['x']
    local y=pt['y']
--  Background
    cairo_rectangle(cr, x, y, pt['width'], pt['height'])
    cairo_set_source_rgba(cr,rgb_to_rgba(bgc,bga))
    cairo_fill(cr)
--  Indicator
    cairo_rectangle(cr, x, y, w, pt['height'])
    cairo_set_source_rgba(cr,rgb_to_rgba(fgc,fga))
    cairo_fill(cr)
    cairo_stroke (cr)
end
function write_text(cr, x, y, text, f)
--write_text(cr, x, y, text, {})
--font attributes (Schriftattribute zuweisen oder default Werte annehmen)
      local font=f.font or "Noto Sans"
      local size=f.size or 10
      local align=f.align or 'l'
      local bold=f.bold or false
      local ital=f.italic or false
      local color=f.color or "0xffffff"
      local slant=CAIRO_FONT_SLANT_NORMAL
      if ital then slant=CAIRO_FONT_SLANT_ITALIC end
      local weight=CAIRO_FONT_WEIGHT_NORMAL
      if bold then weight=CAIRO_FONT_WEIGHT_BOLD end

--Text Size (Textgröße für die Plazierung bestimmen.)
      local x_a=0
      local y_a=0
      local te = cairo_text_extents_t:create()
      tolua.takeownership(te)
      cairo_select_font_face (cr, font, slant, weight)
      cairo_set_font_size (cr, size)
      cairo_text_extents (cr, text, te)

--Text Position
      if align=='c' then
        x_a = -(te.width/2+te.x_bearing)
        y_a = -(te.height/2+te.y_bearing)
      end
      if align=='r' then
        x_a = -(te.width+te.x_bearing)
        --y_a = -(te.height+te.y_bearing)
      end

--Schadow 1 Pixel (Schatten für den Text um 1 Pixel versetzt)
      cairo_set_source_rgba(cr, rgb_to_rgba(0x000000,1))

      cairo_move_to (cr, x+1+x_a, y+1+y_a)
      cairo_show_text (cr, text)
      cairo_stroke(cr)

-- Now Text on Top (nun den Text oben drauf)
      cairo_set_source_rgba(cr, rgb_to_rgba(color,1))
      cairo_move_to (cr, x+x_a, y+y_a)
      cairo_show_text (cr, text)
      cairo_stroke(cr)
end
function conky_main()
    function running(cr,player) -- is Player running? / läuft der Player?
        local handle = io.popen("ps -U root -u root -N | awk '/"..player.."/{print $4}'")
        local result = handle:read()
        handle:close()
        if result == player then
            daten = mysplit (conky_parse('${exec bash ./mpris.sh '..player..'}')) -- length pos artist titel postime lengthtime vol album
            if (daten[1]~="stopped") then
                color=0xffffff  alpha=0.1   typ=1
                draw_bg(cr,color,alpha,typ) -- Funktion Hintergrund Conky Bereich / Function Backgrounds Conky Area
                color=0xffffff  alpha=0.8   typ=2
                draw_bg(cr,color,alpha,typ) --zeichne Linie um den Bereich / Draw line around Conky Area
                if daten[4] == daten [8] then
                    daten[8]=" Single"
                end
                write_text(cr, 130,84,daten[3], {font="Dyuthi", size=22, align="l"}) --artist
                write_text(cr, 134,110,daten[8], {font="Dyuthi", size=16, align="l"}) --album
                write_text(cr, 134,126,daten[4], {font="Dyuthi", size=16, align="l"}) --titel	
                write_text(cr, 145,22,daten[5], {font="Dyuthi", size=12, align="l"})  --position
                write_text(cr, 410,22,daten[6], {font="Dyuthi", size=12, align="r"}) --length
		        value=tonumber(daten[2])
                total=tonumber(daten[1])
                if (value == nil or total == nil) then
                    pct=1
                else
		            pct=value/total          
                    draw_bar(cr,pct,pt)
	                fDrawImage(cr,'/tmp/tmp.png',70,70,120,120)
                end
--                write_text(cr, 130,55," "..player, {font="Dyuthi", size=22, align="l", color="0xff0000"}) --Player
            end
        else
            stop=conky_parse('${exec bash stop.sh}')
        end
    end
	if conky_window==nil then return end
	local cs=cairo_xlib_surface_create(conky_window.display,conky_window.drawable,conky_window.visual, conky_window.width,conky_window.height)	
	local cr=cairo_create(cs)		
	local updates=conky_parse('${updates}')
	update_num=tonumber(updates)
	if update_num>5 then
-- Player Auswahl. Jeder mpris unterstützende Player ist möglich. / Player selection. Any mpris supporting player is possible.
        player="clementine"
--        player="audacious"
--        player="vlc"
--        player="qmmp"
--        player="celluloid"
        running(cr,player)
	end
   cairo_surface_destroy(cs)
   cairo_destroy(cr)
end

player.sh

#!/bin/bash
# 
clementine &
# audacious &
# qmmp &
# vlc '/home/ralf/.conky/NowPlaying/favs.m3u'&
# celluloid '/home/ralf/.conky/NowPlaying/favs.m3u' &
sleep 1
cd $HOME/.conky/NowPlaying
conky -c conkyrc &
echo $! > /tmp/pid
exit 0

stop.sh

#!/bin/bash

f=$(</tmp/pid)
kill -15 $f