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1 ;; gtk-font-menu.el --- Managing menus of GTK 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 ;; GTK-ized by: William Perry <wmperry@xemacs.org>
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12
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13 ;; This file is part of XEmacs.
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14
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15 ;; XEmacs is free software; you can redistribute it and/or modify it
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16 ;; under the terms of the GNU General Public License as published by
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17 ;; the Free Software Foundation; either version 2, or (at your option)
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18 ;; any later version.
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19
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20 ;; XEmacs is distributed in the hope that it will be useful, but
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21 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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22 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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23 ;; General Public License for more details.
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24
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25 ;; You should have received a copy of the GNU General Public License
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26 ;; along with XEmacs; see the file COPYING. If not, write to the
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27 ;; Free Software Foundation, 59 Temple Place - Suite 330,
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28 ;; Boston, MA 02111-1307, USA.
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29 ;;; Code:
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30
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31 ;; #### - implement these...
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32 ;;
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33 ;;; (defvar font-menu-ignore-proportional-fonts nil
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34 ;;; "*If non-nil, then the font menu will only show fixed-width fonts.")
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35
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36 (require 'font-menu)
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37
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502
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38 (globally-declare-boundp
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39 '(gtk-font-regexp
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40 gtk-font-regexp-foundry-and-family gtk-font-regexp-spacing))
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41
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462
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42 (defvar gtk-font-menu-registry-encoding nil
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43 "Registry and encoding to use with font menu fonts.")
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44
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45 (defvar gtk-fonts-menu-junk-families
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46 (mapconcat
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47 #'identity
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48 '("cursor" "glyph" "symbol" ; Obvious losers.
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49 "\\`Ax...\\'" ; FrameMaker fonts - there are just way too
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50 ; many of these, and there is a different
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51 ; font family for each font face! Losers.
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52 ; "Axcor" -> "Applix Courier Roman",
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53 ; "Axcob" -> "Applix Courier Bold", etc.
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54 )
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55 "\\|")
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56 "A regexp matching font families which are uninteresting (e.g. cursor fonts).")
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57
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58 (defun hack-font-truename (fn)
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59 "Filter the output of `font-instance-truename' to deal with Japanese fontsets."
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60 (if (string-match "," (font-instance-truename fn))
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61 (let ((fpnt (nth 8 (split-string (font-instance-name fn) "-")))
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62 (flist (split-string (font-instance-truename fn) ","))
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63 ret)
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64 (while flist
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65 (if (string-equal fpnt (nth 8 (split-string (car flist) "-")))
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66 (progn (setq ret (car flist)) (setq flist nil))
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67 (setq flist (cdr flist))
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68 ))
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69 ret)
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70 (font-instance-truename fn)))
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71
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72 (defvar gtk-font-regexp-ascii nil
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73 "This is used to filter out font families that can't display ASCII text.
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74 It must be set at run-time.")
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75
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76 ;;;###autoload
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77 (defun gtk-reset-device-font-menus (device &optional debug)
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78 "Generates the `Font', `Size', and `Weight' submenus for the Options menu.
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79 This is run the first time that a font-menu is needed for each device.
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80 If you don't like the lazy invocation of this function, you can add it to
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81 `create-device-hook' and that will make the font menus respond more quickly
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82 when they are selected for the first time. If you add fonts to your system,
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83 or if you change your font path, you can call this to re-initialize the menus."
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84 ;; by Stig@hackvan.com
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85 ;; #### - this should implement a `menus-only' option, which would
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86 ;; recalculate the menus from the cache w/o having to do list-fonts again.
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87 (unless gtk-font-regexp-ascii
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88 (setq gtk-font-regexp-ascii (if (featurep 'mule)
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502
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89 (declare-fboundp
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90 (charset-registry 'ascii))
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462
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91 "iso8859-1")))
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92 (setq gtk-font-menu-registry-encoding
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93 (if (featurep 'mule) "*-*" "iso8859-1"))
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94 (let ((case-fold-search t)
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95 family size weight entry monospaced-p
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96 dev-cache cache families sizes weights)
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97 (dolist (name (cond ((null debug) ; debugging kludge
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98 (list-fonts "*-*-*-*-*-*-*-*-*-*-*-*-*-*" device))
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99 ((stringp debug) (split-string debug "\n"))
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100 (t debug)))
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101 (when (and (string-match gtk-font-regexp-ascii name)
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102 (string-match gtk-font-regexp name))
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103 (setq weight (capitalize (match-string 1 name))
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104 size (string-to-int (match-string 6 name)))
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105 (or (string-match gtk-font-regexp-foundry-and-family name)
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106 (error "internal error"))
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107 (setq family (capitalize (match-string 1 name)))
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108 (or (string-match gtk-font-regexp-spacing name)
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109 (error "internal error"))
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110 (setq monospaced-p (string= "m" (match-string 1 name)))
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111 (unless (string-match gtk-fonts-menu-junk-families family)
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112 (setq entry (or (vassoc family cache)
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113 (car (setq cache
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114 (cons (vector family nil nil t)
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115 cache)))))
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116 (or (member family families) (push family families))
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117 (or (member weight weights) (push weight weights))
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118 (or (member size sizes) (push size sizes))
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119 (or (member weight (aref entry 1)) (push weight (aref entry 1)))
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120 (or (member size (aref entry 2)) (push size (aref entry 2)))
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121 (aset entry 3 (and (aref entry 3) monospaced-p)))))
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122 ;;
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123 ;; Hack scalable fonts.
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124 ;; Some fonts come only in scalable versions (the only size is 0)
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125 ;; and some fonts come in both scalable and non-scalable versions
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126 ;; (one size is 0). If there are any scalable fonts at all, make
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127 ;; sure that the union of all point sizes contains at least some
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128 ;; common sizes - it's possible that some sensible sizes might end
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129 ;; up not getting mentioned explicitly.
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130 ;;
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131 (if (member 0 sizes)
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132 (let ((common '(60 80 100 120 140 160 180 240)))
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133 (while common
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134 (or;;(member (car common) sizes) ; not enough slack
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135 (let ((rest sizes)
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136 (done nil))
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137 (while (and (not done) rest)
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138 (if (and (> (car common) (- (car rest) 5))
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139 (< (car common) (+ (car rest) 5)))
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140 (setq done t))
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141 (setq rest (cdr rest)))
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142 done)
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143 (setq sizes (cons (car common) sizes)))
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144 (setq common (cdr common)))
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145 (setq sizes (delq 0 sizes))))
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146
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147 (setq families (sort families 'string-lessp)
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148 weights (sort weights 'string-lessp)
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149 sizes (sort sizes '<))
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150
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151 (dolist (entry cache)
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152 (aset entry 1 (sort (aref entry 1) 'string-lessp))
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153 (aset entry 2 (sort (aref entry 2) '<)))
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154
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155 (setq dev-cache (assq device device-fonts-cache))
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156 (or dev-cache
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157 (setq dev-cache (car (push (list device) device-fonts-cache))))
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158 (setcdr
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159 dev-cache
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160 (vector
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161 cache
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162 (mapcar (lambda (x)
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163 (vector x
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164 (list 'font-menu-set-font x nil nil)
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165 ':style 'radio ':active nil ':selected nil))
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166 families)
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167 (mapcar (lambda (x)
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168 (vector (if (/= 0 (% x 10))
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1104
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169 (number-to-string (/ x 10.0))
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170 (number-to-string (/ x 10)))
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462
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171 (list 'font-menu-set-font nil nil x)
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172 ':style 'radio ':active nil ':selected nil))
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173 sizes)
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174 (mapcar (lambda (x)
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175 (vector x
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176 (list 'font-menu-set-font nil x nil)
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177 ':style 'radio ':active nil ':selected nil))
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178 weights)))
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179 (cdr dev-cache)))
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180
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181 ;; Extract font information from a face. We examine both the
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182 ;; user-specified font name and the canonical (`true') font name.
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183 ;; These can appear to have totally different properties.
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184 ;; For examples, see the prolog above.
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185
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186 ;; We use the user-specified one if possible, else use the truename.
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187 ;; If the user didn't specify one (with "-dt-*-*", for example)
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188 ;; get the truename and use the possibly suboptimal data from that.
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189 ;;;###autoload
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190 (defun* gtk-font-menu-font-data (face dcache)
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191 (defvar gtk-font-regexp)
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192 (defvar gtk-font-regexp-foundry-and-family)
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193 (let* ((case-fold-search t)
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194 (domain (if font-menu-this-frame-only-p
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195 (selected-frame)
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196 (selected-device)))
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197 (name (font-instance-name (face-font-instance face domain)))
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198 (truename (font-instance-truename
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199 (face-font-instance face domain
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200 (if (featurep 'mule) 'ascii))))
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201 family size weight entry slant)
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202 (when (string-match gtk-font-regexp-foundry-and-family name)
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203 (setq family (capitalize (match-string 1 name)))
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204 (setq entry (vassoc family (aref dcache 0))))
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205 (when (and (null entry)
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206 (string-match gtk-font-regexp-foundry-and-family truename))
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207 (setq family (capitalize (match-string 1 truename)))
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208 (setq entry (vassoc family (aref dcache 0))))
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209 (when (null entry)
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210 (return-from gtk-font-menu-font-data (make-vector 5 nil)))
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211
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212 (when (string-match gtk-font-regexp name)
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213 (setq weight (capitalize (match-string 1 name)))
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214 (setq size (string-to-int (match-string 6 name))))
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215
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216 (when (string-match gtk-font-regexp truename)
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217 (when (not (member weight (aref entry 1)))
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218 (setq weight (capitalize (match-string 1 truename))))
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219 (when (not (member size (aref entry 2)))
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220 (setq size (string-to-int (match-string 6 truename))))
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221 (setq slant (capitalize (match-string 2 truename))))
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222
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223 (vector entry family size weight slant)))
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224
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225 (defun gtk-font-menu-load-font (family weight size slant resolution)
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226 "Try to load a font with the requested properties.
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227 The weight, slant and resolution are only hints."
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228 (when (integerp size) (setq size (int-to-string size)))
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229 (let (font)
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230 (catch 'got-font
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231 (dolist (weight (list weight "*"))
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232 (dolist (slant
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233 (cond ((string-equal slant "O") '("O" "I" "*"))
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234 ((string-equal slant "I") '("I" "O" "*"))
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235 ((string-equal slant "*") '("*"))
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236 (t (list slant "*"))))
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237 (dolist (resolution
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238 (if (string-equal resolution "*-*")
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239 (list resolution)
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240 (list resolution "*-*")))
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241 (when (setq font
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242 (make-font-instance
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243 (concat "-*-" family "-" weight "-" slant "-*-*-*-"
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244 size "-" resolution "-*-*-"
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245 gtk-font-menu-registry-encoding)
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246 nil t))
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247 (throw 'got-font font))))))))
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248
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249 (provide 'gtk-font-menu)
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250
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251 ;;; gtk-font-menu.el ends here
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