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1 ;;; gnus-picon.el --- displaying pretty icons in Gnus
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2 ;; Copyright (C) 1996,97 Free Software Foundation, Inc.
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3
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4 ;; Author: Wes Hardaker <hardaker@ece.ucdavis.edu>
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5 ;; Keywords: news xpm annotation glyph faces
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6
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7 ;; This file is part of GNU Emacs.
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8
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9 ;; GNU Emacs is free software; you can redistribute it and/or modify
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10 ;; it under the terms of the GNU General Public License as published by
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11 ;; the Free Software Foundation; either version 2, or (at your option)
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12 ;; any later version.
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13
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14 ;; GNU Emacs is distributed in the hope that it will be useful,
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15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 ;; GNU General Public License for more details.
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18
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19 ;; You should have received a copy of the GNU General Public License
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20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 ;; Boston, MA 02111-1307, USA.
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23
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24 ;;; Commentary:
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25
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26 ;;; Code:
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27
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28 (require 'gnus)
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29 (require 'xpm)
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30 (require 'annotations)
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31 (require 'custom)
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32 (require 'gnus-art)
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33 (require 'gnus-win)
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34
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35 (defgroup picons nil
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36 "Show pictures of people, domains, and newsgroups (XEmacs).
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37 For this to work, you must add gnus-group-display-picons to the
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38 gnus-summary-display-hook or to the gnus-article-display-hook
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39 depending on what gnus-picons-display-where is set to. You must
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40 also add gnus-article-display-picons to gnus-article-display-hook."
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41 :group 'gnus-visual)
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42
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43 (defcustom gnus-picons-buffer "*Icon Buffer*"
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44 "Buffer name to display the icons in if gnus-picons-display-where is 'picons."
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45 :type 'string
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46 :group 'picons)
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47
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48 (defcustom gnus-picons-display-where 'picons
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49 "Where to display the group and article icons.
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50 Legal values are `article' and `picons'."
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51 :type '(choice symbol string)
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52 :group 'picons)
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53
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54 (defcustom gnus-picons-database "/usr/local/faces"
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55 "Defines the location of the faces database.
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56 For information on obtaining this database of pretty pictures, please
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57 see http://www.cs.indiana.edu/picons/ftp/index.html"
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58 :type 'directory
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59 :group 'picons)
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60
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61 (defcustom gnus-picons-news-directory "news"
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62 "Sub-directory of the faces database containing the icons for newsgroups."
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63 :type 'string
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64 :group 'picons)
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65
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66 (defcustom gnus-picons-user-directories '("local" "users" "usenix" "misc/MISC")
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67 "List of directories to search for user faces."
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68 :type '(repeat string)
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69 :group 'picons)
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70
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71 (defcustom gnus-picons-domain-directories '("domains")
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72 "List of directories to search for domain faces.
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73 Some people may want to add \"unknown\" to this list."
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74 :type '(repeat string)
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75 :group 'picons)
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76
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77 (defcustom gnus-picons-refresh-before-display nil
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78 "If non-nil, display the article buffer before computing the picons."
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79 :type 'boolean
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80 :group 'picons)
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81
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82 (defcustom gnus-picons-x-face-file-name
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83 (format "/tmp/picon-xface.%s.xbm" (user-login-name))
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84 "The name of the file in which to store the converted X-face header."
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85 :type 'string
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86 :group 'picons)
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87
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88 (defcustom gnus-picons-convert-x-face (format "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm | pbmtoxbm > %s" gnus-picons-x-face-file-name)
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89 "Command to convert the x-face header into a xbm file."
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90 :type 'string
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91 :group 'picons)
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92
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93 (defcustom gnus-picons-display-as-address t
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94 "*If t display textual email addresses along with pictures."
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95 :type 'boolean
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96 :group 'picons)
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97
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98 (defcustom gnus-picons-file-suffixes
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99 (when (featurep 'x)
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100 (let ((types (list "xbm")))
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101 (when (featurep 'gif)
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102 (push "gif" types))
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103 (when (featurep 'xpm)
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104 (push "xpm" types))
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105 types))
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106 "List of suffixes on picon file names to try."
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107 :type '(repeat string)
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108 :group 'picons)
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109
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110 (defcustom gnus-picons-display-article-move-p t
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111 "*Whether to move point to first empty line when displaying picons.
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112 This has only an effect if `gnus-picons-display-where' hs value article."
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113 :type 'boolean
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114 :group 'picons)
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115
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116 (defvar gnus-picons-map (make-sparse-keymap "gnus-picons-keys")
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117 "keymap to hide/show picon glyphs")
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118
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119 (define-key gnus-picons-map [(button2)] 'gnus-picons-toggle-extent)
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120
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121 ;;; Internal variables.
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122
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123 (defvar gnus-group-annotations nil)
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124 (defvar gnus-article-annotations nil)
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125 (defvar gnus-x-face-annotations nil)
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126
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127 (defun gnus-picons-remove (plist)
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128 (let ((listitem (car plist)))
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129 (while (setq listitem (car plist))
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130 (when (annotationp listitem)
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131 (delete-annotation listitem))
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132 (setq plist (cdr plist)))))
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133
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134 (defun gnus-picons-remove-all ()
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135 "Removes all picons from the Gnus display(s)."
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136 (interactive)
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137 (gnus-picons-remove gnus-article-annotations)
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138 (gnus-picons-remove gnus-group-annotations)
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139 (gnus-picons-remove gnus-x-face-annotations)
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140 (setq gnus-article-annotations nil
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141 gnus-group-annotations nil
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142 gnus-x-face-annotations nil)
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143 (when (bufferp gnus-picons-buffer)
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144 (kill-buffer gnus-picons-buffer)))
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145
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146 (defun gnus-get-buffer-name (variable)
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147 "Returns the buffer name associated with the contents of a variable."
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148 (cond ((symbolp variable)
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149 (let ((newvar (cdr (assq variable gnus-window-to-buffer))))
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150 (cond ((symbolp newvar)
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151 (symbol-value newvar))
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152 ((stringp newvar) newvar))))
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153 ((stringp variable)
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154 variable)))
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155
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156 (defun gnus-picons-article-display-x-face ()
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157 "Display the x-face header bitmap in the 'gnus-picons-display-where buffer."
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158 ;; delete any old ones.
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159 (gnus-picons-remove gnus-x-face-annotations)
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160 (setq gnus-x-face-annotations nil)
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161 ;; display the new one.
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162 (let ((gnus-article-x-face-command 'gnus-picons-display-x-face))
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163 (gnus-article-display-x-face)))
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164
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165 (defun gnus-picons-display-x-face (beg end)
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166 "Function to display the x-face header in the picons window.
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167 To use: (setq gnus-article-x-face-command 'gnus-picons-display-x-face)"
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168 (interactive)
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169 ;; convert the x-face header to a .xbm file
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170 (let ((process-connection-type nil)
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171 (process nil))
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172 (process-kill-without-query
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173 (setq process (start-process
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174 "gnus-x-face" nil shell-file-name shell-command-switch
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175 gnus-picons-convert-x-face)))
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176 (process-send-region "gnus-x-face" beg end)
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177 (process-send-eof "gnus-x-face")
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178 ;; wait for it.
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179 (while (not (equal (process-status process) 'exit))
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180 (sleep-for .1)))
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181 ;; display it
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182 (save-excursion
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183 (set-buffer (get-buffer-create (gnus-get-buffer-name
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184 gnus-picons-display-where)))
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185 (gnus-add-current-to-buffer-list)
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186 (goto-char (point-min))
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187 (let (buffer-read-only)
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188 (unless (eolp)
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189 (push (make-annotation "\n" (point) 'text)
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190 gnus-x-face-annotations))
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191 ;; append the annotation to gnus-article-annotations for deletion.
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192 (setq gnus-x-face-annotations
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193 (append
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194 (gnus-picons-try-to-find-face gnus-picons-x-face-file-name t)
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195 gnus-x-face-annotations)))
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196 ;; delete the tmp file
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197 (delete-file gnus-picons-x-face-file-name)))
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198
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199 (defun gnus-article-display-picons ()
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200 "Display faces for an author and his/her domain in gnus-picons-display-where."
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201 (interactive)
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202 ;; let drawing catch up
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203 (when gnus-picons-refresh-before-display
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204 (sit-for 0))
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205 (let ((first t)
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206 from at-idx databases)
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207 (when (and (featurep 'xpm)
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208 (or (not (fboundp 'device-type)) (equal (device-type) 'x))
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209 (setq from (mail-fetch-field "from"))
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210 (setq from (downcase
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211 (or (cadr (mail-extract-address-components from))
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212 "")))
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213 (or (setq at-idx (string-match "@" from))
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214 (setq at-idx (length from))))
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215 (save-excursion
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216 (let ((username (substring from 0 at-idx))
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217 (addrs (if (eq at-idx (length from))
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218 (if gnus-local-domain
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219 (nreverse (message-tokenize-header
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220 gnus-local-domain "."))
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221 '("."))
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222 (nreverse (message-tokenize-header
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223 (substring from (1+ at-idx)) ".")))))
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224 (set-buffer (get-buffer-create
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225 (gnus-get-buffer-name gnus-picons-display-where)))
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226 (gnus-add-current-to-buffer-list)
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227 (goto-char (point-min))
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228 (if (and (eq gnus-picons-display-where 'article)
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229 gnus-picons-display-article-move-p)
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230 (when (search-forward "\n\n" nil t)
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231 (forward-line -1))
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232 (unless (eolp)
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233 (push (make-annotation "\n" (point) 'text)
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234 gnus-article-annotations)))
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235
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236 (gnus-picons-remove gnus-article-annotations)
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237 (setq gnus-article-annotations nil)
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238
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239 ;; look for domain paths.
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240 (setq databases gnus-picons-domain-directories)
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241 (while databases
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242 (setq gnus-article-annotations
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243 (nconc (gnus-picons-insert-face-if-exists
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244 (car databases)
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245 addrs
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246 "unknown" (or gnus-picons-display-as-address
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247 gnus-article-annotations) t t)
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248 gnus-article-annotations))
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249 (setq databases (cdr databases)))
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250
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251 ;; add an '@' if displaying as address
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252 (when gnus-picons-display-as-address
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253 (setq gnus-article-annotations
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254 (nconc gnus-article-annotations
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255 (list
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256 (make-annotation "@" (point) 'text nil nil nil t)))))
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257
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258 ;; then do user directories,
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259 (let (found)
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260 (setq databases gnus-picons-user-directories)
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261 (setq username (downcase username))
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262 (while databases
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263 (setq found
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264 (nconc (gnus-picons-insert-face-if-exists
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265 (car databases) addrs username
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266 (or gnus-picons-display-as-address
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267 gnus-article-annotations) nil t)
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268 found))
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269 (setq databases (cdr databases)))
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270 ;; add their name if no face exists
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271 (when (and gnus-picons-display-as-address (not found))
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272 (setq found
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273 (list
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274 (make-annotation username (point) 'text nil nil nil t))))
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275 (setq gnus-article-annotations
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276 (nconc found gnus-article-annotations)))
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277
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278 (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))))
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279
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280 (defun gnus-group-display-picons ()
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281 "Display icons for the group in the gnus-picons-display-where buffer."
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282 (interactive)
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283 ;; let display catch up so far
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284 (when gnus-picons-refresh-before-display
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285 (sit-for 0))
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286 (when (and (featurep 'xpm)
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287 (or (not (fboundp 'device-type)) (equal (device-type) 'x)))
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288 (save-excursion
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289 (set-buffer (get-buffer-create
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290 (gnus-get-buffer-name gnus-picons-display-where)))
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291 (gnus-add-current-to-buffer-list)
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292 (goto-char (point-min))
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293 (if (and (eq gnus-picons-display-where 'article)
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294 gnus-picons-display-article-move-p)
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295 (when (search-forward "\n\n" nil t)
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296 (forward-line -1))
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297 (unless (eolp)
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298 (push (make-annotation "\n" (point) 'text)
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299 gnus-group-annotations)))
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300 (cond
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301 ((listp gnus-group-annotations)
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302 (mapc #'(lambda (ext) (when (extent-live-p ext)
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303 (delete-annotation ext)))
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304 gnus-group-annotations)
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305 (setq gnus-group-annotations nil))
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306 ((annotationp gnus-group-annotations)
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307 (delete-annotation gnus-group-annotations)
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308 (setq gnus-group-annotations nil)))
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309 (gnus-picons-remove gnus-group-annotations)
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310 (setq gnus-group-annotations
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311 (gnus-picons-insert-face-if-exists
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312 gnus-picons-news-directory
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313 (message-tokenize-header gnus-newsgroup-name ".")
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314 "unknown" nil t))
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315 (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))
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316
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317 (defsubst gnus-picons-try-suffixes (file)
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318 (let ((suffixes gnus-picons-file-suffixes)
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319 f)
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320 (while (and suffixes
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321 (not (file-exists-p (setq f (concat file (pop suffixes))))))
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322 (setq f nil))
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323 f))
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324
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325 (defun gnus-picons-insert-face-if-exists (database addrs filename &optional
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326 nobar-p dots rightp)
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327 "Inserts a face at point if I can find one"
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328 ;; '(gnus-picons-insert-face-if-exists
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329 ;; "Database" '("edu" "indiana" "cs") "Name")
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330 ;; looks for:
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331 ;; 1. edu/indiana/cs/Name
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332 ;; 2. edu/indiana/Name
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333 ;; 3. edu/Name
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334 ;; '(gnus-picons-insert-face-if-exists
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335 ;; "Database/MISC" '("edu" "indiana" "cs") "Name")
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336 ;; looks for:
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337 ;; 1. MISC/Name
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338 ;; The special treatment of MISC doesn't conform with the conventions for
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339 ;; picon databases, but otherwise we would always see the MISC/unknown face.
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340 (let ((bar (and (not nobar-p)
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341 (or gnus-picons-display-as-address
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342 (annotations-in-region
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343 (point) (min (point-max) (1+ (point)))
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344 (current-buffer)))))
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345 (path (concat (file-name-as-directory gnus-picons-database)
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346 database "/"))
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347 (domainp (and gnus-picons-display-as-address dots))
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348 picons found bar-ann cur first)
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349 (when (string-match "/MISC" database)
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350 (setq addrs '(".")))
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351 (while (and addrs
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352 (file-accessible-directory-p path))
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353 (setq cur (pop addrs)
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354 path (concat path cur "/"))
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108
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355 (if (setq found
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356 (gnus-picons-try-suffixes (concat path filename "/face.")))
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108
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357 (progn
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98
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358 (setq picons (nconc (when (and domainp first rightp)
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359 (list (make-annotation
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108
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360 "." (point) 'text
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98
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361 nil nil nil rightp)
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362 picons))
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108
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363 (gnus-picons-try-to-find-face
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98
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364 found nil (if domainp cur filename) rightp)
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365 (when (and domainp first (not rightp))
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366 (list (make-annotation
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108
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367 "." (point) 'text
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98
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368 nil nil nil rightp)
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369 picons))
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370 picons)))
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371 (when domainp
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108
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372 (setq picons
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136
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373 (nconc
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374 (list (make-annotation
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375 (if first (concat (if (not rightp) ".") cur
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376 (if rightp ".")) cur)
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377 (point) 'text nil nil nil rightp))
|
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378 picons))))
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98
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379 (when (and bar (or domainp found))
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108
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380 (setq bar-ann (gnus-picons-try-to-find-face
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381 (concat gnus-xmas-glyph-directory "bar.xbm")
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98
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382 nil nil t))
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383 (when bar-ann
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384 (setq picons (nconc picons bar-ann))
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385 (setq bar nil)))
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386 (setq first t))
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387 (when (and addrs domainp)
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388 (let ((it (mapconcat 'downcase (nreverse addrs) ".")))
|
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136
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389 (setq picons
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|
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390 (nconc picons (list (make-annotation
|
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391 (if first
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392 (concat (if (not rightp) ".")
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393 it (if rightp "."))
|
|
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394 it)
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395 (point) 'text
|
|
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396 nil nil nil rightp))))))
|
|
98
|
397 picons))
|
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0
|
398
|
|
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399 (defvar gnus-picons-glyph-alist nil)
|
|
108
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400
|
|
98
|
401 (defun gnus-picons-try-to-find-face (path &optional xface-p part rightp)
|
|
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402 "If PATH exists, display it as a bitmap. Returns t if succeeded."
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0
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403 (let ((glyph (and (not xface-p)
|
|
|
404 (cdr (assoc path gnus-picons-glyph-alist)))))
|
|
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405 (when (or glyph (file-exists-p path))
|
|
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406 (unless glyph
|
|
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407 (setq glyph (make-glyph path))
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|
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408 (unless xface-p
|
|
|
409 (push (cons path glyph) gnus-picons-glyph-alist))
|
|
|
410 (set-glyph-face glyph 'default))
|
|
98
|
411 (let ((new (make-annotation glyph (point) 'text nil nil nil rightp)))
|
|
|
412 (nconc
|
|
|
413 (list new)
|
|
|
414 (when (and (eq major-mode 'gnus-article-mode)
|
|
|
415 (not gnus-picons-display-as-address)
|
|
|
416 (not part))
|
|
|
417 (list (make-annotation " " (point) 'text nil nil nil rightp)))
|
|
|
418 (when (and part gnus-picons-display-as-address)
|
|
|
419 (let ((txt (make-annotation part (point) 'text nil nil nil rightp)))
|
|
|
420 (hide-annotation txt)
|
|
|
421 (set-extent-property txt 'its-partner new)
|
|
|
422 (set-extent-property txt 'keymap gnus-picons-map)
|
|
|
423 (set-extent-property txt 'mouse-face gnus-article-mouse-face)
|
|
|
424 (set-extent-property new 'its-partner txt)
|
|
|
425 (set-extent-property new 'keymap gnus-picons-map))))))))
|
|
0
|
426
|
|
|
427 (defun gnus-picons-reverse-domain-path (str)
|
|
|
428 "a/b/c/d -> d/c/b/a"
|
|
|
429 (mapconcat 'downcase (nreverse (message-tokenize-header str "/")) "/"))
|
|
|
430
|
|
98
|
431 (defun gnus-picons-toggle-extent (event)
|
|
|
432 "Toggle picon glyph at given point"
|
|
|
433 (interactive "e")
|
|
|
434 (let* ((ant1 (event-glyph-extent event))
|
|
|
435 (ant2 (extent-property ant1 'its-partner)))
|
|
|
436 (when (and (annotationp ant1) (annotationp ant2))
|
|
|
437 (reveal-annotation ant2)
|
|
|
438 (hide-annotation ant1))))
|
|
|
439
|
|
0
|
440 (gnus-add-shutdown 'gnus-picons-close 'gnus)
|
|
|
441
|
|
|
442 (defun gnus-picons-close ()
|
|
|
443 "Shut down the picons."
|
|
|
444 (setq gnus-picons-glyph-alist nil))
|
|
|
445
|
|
|
446 (provide 'gnus-picon)
|
|
|
447
|
|
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448 ;;; gnus-picon.el ends here
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