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1 ;; x-font-menu.el --- Managing menus of X fonts.
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2
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3 ;; Copyright (C) 1994 Free Software Foundation, Inc.
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4 ;; Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
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5 ;; Copyright (C) 1997 Sun Microsystems
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6
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7 ;; Author: Jamie Zawinski <jwz@jwz.org>
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8 ;; Restructured by: Jonathan Stigelman <Stig@hackvan.com>
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9 ;; Mule-ized by: Martin Buchholz
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10 ;; More restructuring for MS-Windows by Andy Piper <andy@xemacs.org>
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11
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12 ;; This file is part of XEmacs.
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13
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14 ;; XEmacs is free software; you can redistribute it and/or modify it
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15 ;; under the terms of the GNU General Public License as published by
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16 ;; the Free Software Foundation; either version 2, or (at your option)
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17 ;; any later version.
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18
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19 ;; XEmacs is distributed in the hope that it will be useful, but
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20 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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22 ;; General Public License for more details.
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23
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24 ;; You should have received a copy of the GNU General Public License
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25 ;; along with XEmacs; see the file COPYING. If not, write to the
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26 ;; Free Software Foundation, 59 Temple Place - Suite 330,
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27 ;; Boston, MA 02111-1307, USA.
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28 ;;; Code:
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29
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30 ;; #### - implement these...
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31 ;;
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32 ;;; (defvar font-menu-ignore-proportional-fonts nil
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33 ;;; "*If non-nil, then the font menu will only show fixed-width fonts.")
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34
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35 (require 'font-menu)
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36
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37 (defvar x-font-menu-registry-encoding nil
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38 "Registry and encoding to use with font menu fonts.")
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39
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40 (defvar x-fonts-menu-junk-families
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41 (purecopy
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42 (mapconcat
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43 #'identity
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44 '("cursor" "glyph" "symbol" ; Obvious losers.
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45 "\\`Ax...\\'" ; FrameMaker fonts - there are just way too
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46 ; many of these, and there is a different
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47 ; font family for each font face! Losers.
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48 ; "Axcor" -> "Applix Courier Roman",
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49 ; "Axcob" -> "Applix Courier Bold", etc.
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50 )
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51 "\\|"))
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52 "A regexp matching font families which are uninteresting (e.g. cursor fonts).")
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53
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54 (defun hack-font-truename (fn)
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55 "Filter the output of `font-instance-truename' to deal with Japanese fontsets."
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56 (if (string-match "," (font-instance-truename fn))
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57 (let ((fpnt (nth 8 (split-string (font-instance-name fn) "-")))
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58 (flist (split-string (font-instance-truename fn) ","))
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59 ret)
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60 (while flist
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61 (if (string-equal fpnt (nth 8 (split-string (car flist) "-")))
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62 (progn (setq ret (car flist)) (setq flist nil))
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63 (setq flist (cdr flist))
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64 ))
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65 ret)
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66 (font-instance-truename fn)))
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67
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68 (defvar x-font-regexp-ascii nil
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69 "This is used to filter out font families that can't display ASCII text.
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70 It must be set at run-time.")
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71
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72 ;;;###autoload
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73 (defun x-reset-device-font-menus (device &optional debug)
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74 "Generates the `Font', `Size', and `Weight' submenus for the Options menu.
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75 This is run the first time that a font-menu is needed for each device.
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76 If you don't like the lazy invocation of this function, you can add it to
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77 `create-device-hook' and that will make the font menus respond more quickly
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78 when they are selected for the first time. If you add fonts to your system,
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79 or if you change your font path, you can call this to re-initialize the menus."
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80 ;; by Stig@hackvan.com
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81 ;; #### - this should implement a `menus-only' option, which would
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82 ;; recalculate the menus from the cache w/o having to do list-fonts again.
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83 (unless x-font-regexp-ascii
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84 (setq x-font-regexp-ascii (if (featurep 'mule)
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85 (charset-registry 'ascii)
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86 "iso8859-1")))
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87 (setq x-font-menu-registry-encoding
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88 (if (featurep 'mule) "*-*" "iso8859-1"))
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89 (let ((case-fold-search t)
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90 family size weight entry monospaced-p
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91 dev-cache cache families sizes weights)
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92 (dolist (name (cond ((null debug) ; debugging kludge
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93 (list-fonts "*-*-*-*-*-*-*-*-*-*-*-*-*-*" device))
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94 ((stringp debug) (split-string debug "\n"))
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95 (t debug)))
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96 (when (and (string-match x-font-regexp-ascii name)
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97 (string-match x-font-regexp name))
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98 (setq weight (capitalize (match-string 1 name))
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99 size (string-to-int (match-string 6 name)))
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100 (or (string-match x-font-regexp-foundry-and-family name)
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101 (error "internal error"))
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102 (setq family (capitalize (match-string 1 name)))
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103 (or (string-match x-font-regexp-spacing name)
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104 (error "internal error"))
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105 (setq monospaced-p (string= "m" (match-string 1 name)))
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106 (unless (string-match x-fonts-menu-junk-families family)
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107 (setq entry (or (vassoc family cache)
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108 (car (setq cache
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109 (cons (vector family nil nil t)
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110 cache)))))
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111 (or (member family families) (push family families))
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112 (or (member weight weights) (push weight weights))
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113 (or (member size sizes) (push size sizes))
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114 (or (member weight (aref entry 1)) (push weight (aref entry 1)))
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115 (or (member size (aref entry 2)) (push size (aref entry 2)))
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116 (aset entry 3 (and (aref entry 3) monospaced-p)))))
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117 ;;
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118 ;; Hack scalable fonts.
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119 ;; Some fonts come only in scalable versions (the only size is 0)
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120 ;; and some fonts come in both scalable and non-scalable versions
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121 ;; (one size is 0). If there are any scalable fonts at all, make
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122 ;; sure that the union of all point sizes contains at least some
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123 ;; common sizes - it's possible that some sensible sizes might end
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124 ;; up not getting mentioned explicitly.
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125 ;;
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126 (if (member 0 sizes)
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127 (let ((common '(60 80 100 120 140 160 180 240)))
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128 (while common
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129 (or;;(member (car common) sizes) ; not enough slack
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130 (let ((rest sizes)
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131 (done nil))
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132 (while (and (not done) rest)
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133 (if (and (> (car common) (- (car rest) 5))
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134 (< (car common) (+ (car rest) 5)))
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135 (setq done t))
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136 (setq rest (cdr rest)))
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137 done)
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138 (setq sizes (cons (car common) sizes)))
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139 (setq common (cdr common)))
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140 (setq sizes (delq 0 sizes))))
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141
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142 (setq families (sort families 'string-lessp)
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143 weights (sort weights 'string-lessp)
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144 sizes (sort sizes '<))
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145
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146 (dolist (entry cache)
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147 (aset entry 1 (sort (aref entry 1) 'string-lessp))
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148 (aset entry 2 (sort (aref entry 2) '<)))
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149
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150 (setq dev-cache (assq device device-fonts-cache))
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151 (or dev-cache
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152 (setq dev-cache (car (push (list device) device-fonts-cache))))
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153 (setcdr
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154 dev-cache
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155 (vector
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156 cache
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157 (mapcar (lambda (x)
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158 (vector x
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159 (list 'font-menu-set-font x nil nil)
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160 ':style 'radio ':active nil ':selected nil))
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161 families)
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162 (mapcar (lambda (x)
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163 (vector (if (/= 0 (% x 10))
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164 ;; works with no LISP_FLOAT_TYPE
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165 (concat (int-to-string (/ x 10)) "."
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166 (int-to-string (% x 10)))
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167 (int-to-string (/ x 10)))
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168 (list 'font-menu-set-font nil nil x)
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169 ':style 'radio ':active nil ':selected nil))
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170 sizes)
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171 (mapcar (lambda (x)
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172 (vector x
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173 (list 'font-menu-set-font nil x nil)
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174 ':style 'radio ':active nil ':selected nil))
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175 weights)))
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176 (cdr dev-cache)))
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177
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178 ;; Extract font information from a face. We examine both the
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179 ;; user-specified font name and the canonical (`true') font name.
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180 ;; These can appear to have totally different properties.
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181 ;; For examples, see the prolog above.
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182
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183 ;; We use the user-specified one if possible, else use the truename.
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184 ;; If the user didn't specify one (with "-dt-*-*", for example)
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185 ;; get the truename and use the possibly suboptimal data from that.
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186 ;;;###autoload
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187 (defun* x-font-menu-font-data (face dcache)
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442
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188 (defvar x-font-regexp)
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189 (defvar x-font-regexp-foundry-and-family)
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428
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190 (let* ((case-fold-search t)
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191 (domain (if font-menu-this-frame-only-p
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192 (selected-frame)
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193 (selected-device)))
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194 (name (font-instance-name (face-font-instance face domain)))
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195 (truename (font-instance-truename
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196 (face-font-instance face domain
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197 (if (featurep 'mule) 'ascii))))
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198 family size weight entry slant)
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199 (when (string-match x-font-regexp-foundry-and-family name)
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200 (setq family (capitalize (match-string 1 name)))
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201 (setq entry (vassoc family (aref dcache 0))))
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202 (when (and (null entry)
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203 (string-match x-font-regexp-foundry-and-family truename))
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204 (setq family (capitalize (match-string 1 truename)))
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205 (setq entry (vassoc family (aref dcache 0))))
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206 (when (null entry)
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207 (return-from x-font-menu-font-data (make-vector 5 nil)))
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208
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209 (when (string-match x-font-regexp name)
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210 (setq weight (capitalize (match-string 1 name)))
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211 (setq size (string-to-int (match-string 6 name))))
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212
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213 (when (string-match x-font-regexp truename)
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214 (when (not (member weight (aref entry 1)))
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215 (setq weight (capitalize (match-string 1 truename))))
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216 (when (not (member size (aref entry 2)))
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217 (setq size (string-to-int (match-string 6 truename))))
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218 (setq slant (capitalize (match-string 2 truename))))
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219
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220 (vector entry family size weight slant)))
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221
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222 (defun x-font-menu-load-font (family weight size slant resolution)
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223 "Try to load a font with the requested properties.
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224 The weight, slant and resolution are only hints."
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225 (when (integerp size) (setq size (int-to-string size)))
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226 (let (font)
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227 (catch 'got-font
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228 (dolist (weight (list weight "*"))
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229 (dolist (slant
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230 (cond ((string-equal slant "O") '("O" "I" "*"))
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231 ((string-equal slant "I") '("I" "O" "*"))
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232 ((string-equal slant "*") '("*"))
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233 (t (list slant "*"))))
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234 (dolist (resolution
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235 (if (string-equal resolution "*-*")
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236 (list resolution)
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237 (list resolution "*-*")))
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238 (when (setq font
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239 (make-font-instance
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240 (concat "-*-" family "-" weight "-" slant "-*-*-*-"
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241 size "-" resolution "-*-*-"
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242 x-font-menu-registry-encoding)
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243 nil t))
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244 (throw 'got-font font))))))))
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245
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246 (provide 'x-font-menu)
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247
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248 ;;; x-font-menu.el ends here
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