jabber-muc-nick-coloring.el

   1 ;;; jabber-muc-nick-coloring.el --- Add nick coloring abilyty to emacs-jabber
   2
   3 ;; Copyright 2009, 2010 Terechkov Evgenii - evg@altlinux.org
   4
   5 ;; This program is free software; you can redistribute it and/or modify
   6 ;; it under the terms of the GNU General Public License as published by
   7 ;; the Free Software Foundation; either version 2, or (at your option)
   8 ;; any later version.
   9 ;;
  10 ;; This program is distributed in the hope that it will be useful,
  11 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 ;; GNU General Public License for more details.
  14 ;;
  15 ;; You should have received a copy of the GNU General Public License
  16 ;; along with this program; if not, write to the Free Software
  17 ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18
  19 ;;; Commentary:
  20
  21 ;;; Code:
  22
  23 (require 'hexrgb)                       ;we need hexrgb-hsv-to-hex
  24 (require 'assoc)                        ;we need aget/aput
  25
  26 ;;;;##########################################################################
  27 ;;;;  User Options, Variables
  28 ;;;;##########################################################################
  29
  30 (defcustom jabber-muc-participant-colors nil
  31   "Alist of used colors. Format is (nick . color). Color may be
  32   in #RGB or textual (like red or blue) notation. Colors will be
  33   added in #RGB notation for unknown nicks."
  34   :type '(alist :key-type string :value-type color)
  35   :group 'jabber-chat)
  36
  37 (defcustom jabber-muc-colorize-local nil
  38   "Colorize MUC messages from you."
  39   :type 'boolean
  40   :group 'jabber-chat)
  41
  42 (defcustom jabber-muc-colorize-foreign nil
  43   "Colorize MUC messages not from you."
  44   :type 'boolean
  45   :group 'jabber-chat)
  46
  47 (defcustom jabber-muc-nick-saturation 1.0
  48   "Default saturation for nick coloring."
  49   :type 'float
  50   :group 'jabber-chat)
  51
  52 (defcustom jabber-muc-nick-value 1.0
  53   "Default value for nick coloring."
  54   :type 'float
  55   :group 'jabber-chat)
  56
  57 (defun jabber-muc-nick-gen-color (nick)
  58   "Return good enough color from available pool"
  59   (let ((hue (/ (mod (string-to-number (md5 nick) 16) 360) 360.0)))
  60     (hexrgb-hsv-to-hex hue jabber-muc-nick-saturation jabber-muc-nick-value)))
  61
  62 (defun jabber-muc-nick-get-color (nick)
  63   "Get NICKs color"
  64   (let ((color (aget jabber-muc-participant-colors nick)))
  65     (if color
  66         color
  67       (progn
  68         (unless jabber-muc-participant-colors )
  69         (aput 'jabber-muc-participant-colors nick (jabber-muc-nick-gen-color nick))
  70         (aget jabber-muc-participant-colors nick)))))
  71
  72 (provide 'jabber-muc-nick-coloring)
  73
  74 ;;; jabber-muc-nick-coloring.el ends here