plugins/messages.lua

   1 --
   2 -- Copyright (c) 2007, Bart Trojanowski <bart@jukie.net>
   3 --
   4 -- Notification area for wmii bar
   5 --
   6 -- To get a messages use:
   7 --
   8 --      wmiir xwrite /event msg anything you want to see
   9 --
  10 -- If you have a script that seldom generates one-line events, you can run:
  11 --
  12 --      somescript | sed -u 's/^/msg /' | wmiir write /event
  13 -- or
  14 --      ssh remote tail -F log-file | xargs -n1 -i wmiir xwrite /event "msg {}"
  15 --
  16
  17 local wmii = require("wmii")
  18 local os = require("os")
  19 local math = require("math")
  20 local string = require("string")
  21 local tostring = tostring
  22
  23 module ("messages")
  24 api_version=0.1
  25
  26 -- local variables
  27 local color_index = 0
  28 local colors = {}
  29 local color_start = {{0xFF,0xFF,0xFF}, {0xAA,0x22,0xAA}, {0xFF,0x00,0x00}}
  30 local color_end   = {{0x44,0x44,0x44}, {0x22,0x22,0x22}, {0x33,0x33,0x33}}
  31 local color_steps = 10
  32
  33 -- build up the colours palett
  34 local i,t,r
  35 for i=1,color_steps do
  36         local x = ""
  37         for t=1,3 do
  38                 local s=color_start[t]
  39                 local e=color_end[t]
  40                 x = x .. '#'
  41                 for r=1,3 do
  42                         local d = (e[r] - s[r]) / color_steps
  43                         local c = math.floor(s[r] + (i * d))
  44                         x = x .. string.format("%02x", c)
  45                 end
  46                 x = x .. ' '
  47         end
  48         colors[i] = x
  49 end
  50
  51 -- get a widget; 0 is the first location in the /rbar, so the middle
  52 local widget = wmii.widget:new ("0")
  53
  54 -- function that cycles the colours
  55 local timer = wmii.timer:new (function (time_since_update)
  56         color_index = color_index + 1
  57         if not colors[color_index] then
  58                 return -1
  59         end
  60
  61         widget:show (nil, colors[color_index])
  62         return 1
  63 end)
  64
  65 -- finally, an event we can listen for
  66 wmii.add_event_handler ("msg", function (ev, args)
  67         wmii.log("msg: " .. tostring(args))
  68
  69         timer:stop()
  70         color_index = 1
  71         widget:show (tostring(args), colors[color_index])
  72         timer:resched(1)
  73 end)
  74
  75
  76