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1 ;; msw-font-menu.el --- Managing menus of mswindows fonts.
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2
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3 ;; Copyright (C) 1999 Free Software Foundation, Inc.
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4
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5 ;; Adapted from x-font-menu.el by Andy Piper <andy@xemacs.org>
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6
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7 ;; This file is part of XEmacs.
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8
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9 ;; XEmacs is free software; you can redistribute it and/or modify it
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10 ;; 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 ;; XEmacs is distributed in the hope that it will be useful, but
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15 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 ;; 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 XEmacs; see the file COPYING. If not, write to the
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21 ;; Free Software Foundation, 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 ;;; mswindows fonts look like:
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25 ;;; fontname[:[weight][ style][:pointsize[:effects]]][:charset]
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26 ;;; ie:
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27 ;;; Lucida Console:Regular:10
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28 ;;; minimal:
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29 ;;; Courier New
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30 ;;; maximal:
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31 ;;; Courier New:Bold Italic:10:underline strikeout:western
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32
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33 ;;; Code:
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34
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35 ;; #### - implement these...
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36 ;;
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37 ;;; (defvar font-menu-ignore-proportional-fonts nil
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38 ;;; "*If non-nil, then the font menu will only show fixed-width fonts.")
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39
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40 (require 'font-menu)
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41
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42 (defvar mswindows-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 mswindows-font-menu-junk-families
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46 (purecopy
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47 (mapconcat
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48 #'identity
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49 '("Symbol"
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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 (defvar mswindows-font-regexp-ascii nil
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55 "This is used to filter out font families that can't display ASCII text.
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56 It must be set at run-time.")
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57
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58 ;;;###autoload
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59 (defun mswindows-reset-device-font-menus (device &optional debug)
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60 "Generates the `Font', `Size', and `Weight' submenus for the Options menu.
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61 This is run the first time that a font-menu is needed for each device.
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62 If you don't like the lazy invocation of this function, you can add it to
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63 `create-device-hook' and that will make the font menus respond more quickly
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64 when they are selected for the first time. If you add fonts to your system,
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65 or if you change your font path, you can call this to re-initialize the menus."
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66 (unless mswindows-font-regexp-ascii
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67 (setq mswindows-font-regexp-ascii (if (featurep 'mule)
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68 (charset-registry 'ascii)
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69 "Western")))
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70 (setq mswindows-font-menu-registry-encoding (if (featurep 'mule) "" "Western"))
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71 (let ((case-fold-search t)
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72 family size weight entry
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73 dev-cache cache families sizes weights)
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74 (dolist (name (cond ((null debug) ; debugging kludge
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75 (list-fonts "::::" device))
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76 ((stringp debug) (split-string debug "\n"))
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77 (t debug)))
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78 (when (and (string-match mswindows-font-regexp-ascii name)
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79 (string-match mswindows-font-regexp name))
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80 (setq weight (capitalize (match-string 2 name))
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81 size (string-to-int (or (match-string 4 name) "0"))
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82 family (match-string 1 name))
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83 (unless (string-match mswindows-font-menu-junk-families family)
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84 (setq entry (or (vassoc name cache)
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85 (car (setq cache
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86 (cons (vector family nil nil t)
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87 cache)))))
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88 (or (member family families) (push family families))
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89 (or (member weight weights) (push weight weights))
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90 (or (member size sizes) (push size sizes))
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91 (or (member weight (aref entry 1)) (push weight (aref entry 1)))
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92 (or (member size (aref entry 2)) (push size (aref entry 2))))))
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93 ;;
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94 ;; Hack scalable fonts.
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95 ;; Some fonts come only in scalable versions (the only size is 0)
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96 ;; and some fonts come in both scalable and non-scalable versions
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97 ;; (one size is 0). If there are any scalable fonts at all, make
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98 ;; sure that the union of all point sizes contains at least some
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99 ;; common sizes - it's possible that some sensible sizes might end
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100 ;; up not getting mentioned explicitly.
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101 ;;
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102 (if (member 0 sizes)
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103 (let ((common '(6 8 10 12 14 16 18 24)))
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104 (while common
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105 (or;;(member (car common) sizes) ; not enough slack
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106 (let ((rest sizes)
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107 (done nil))
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108 (while (and (not done) rest)
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109 (if (and (> (car common) (- (car rest) 1))
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110 (< (car common) (+ (car rest) 1)))
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111 (setq done t))
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112 (setq rest (cdr rest)))
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113 done)
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114 (setq sizes (cons (car common) sizes)))
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115 (setq common (cdr common)))
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116 (setq sizes (delq 0 sizes))))
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117
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118 (setq families (sort families 'string-lessp)
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119 weights (sort weights 'string-lessp)
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120 sizes (sort sizes '<))
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121
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122 (dolist (entry cache)
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123 (aset entry 1 (sort (aref entry 1) 'string-lessp))
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124 (aset entry 2 (sort (aref entry 2) '<)))
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125
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126 (setq dev-cache (assq device device-fonts-cache))
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127 (or dev-cache
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128 (setq dev-cache (car (push (list device) device-fonts-cache))))
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129 (setcdr
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130 dev-cache
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131 (vector
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132 cache
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133 (mapcar (lambda (x)
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134 (vector x
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135 (list 'font-menu-set-font x nil nil)
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136 ':style 'radio ':active nil ':selected nil))
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137 families)
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138 (mapcar (lambda (x)
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139 (vector (int-to-string x)
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140 (list 'font-menu-set-font nil nil x)
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141 ':style 'radio ':active nil ':selected nil))
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142 sizes)
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143 (mapcar (lambda (x)
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144 (vector x
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145 (list 'font-menu-set-font nil x nil)
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146 ':style 'radio ':active nil ':selected nil))
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147 weights)))
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148 (cdr dev-cache)))
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149
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150 ;; Extract font information from a face. We examine both the
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151 ;; user-specified font name and the canonical (`true') font name.
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152 ;; These can appear to have totally different properties.
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153
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154 ;; We use the user-specified one if possible, else use the truename.
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155 ;; If the user didn't specify one get the truename and use the
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156 ;; possibly suboptimal data from that.
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157 ;;;###autoload
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158 (defun* mswindows-font-menu-font-data (face dcache)
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159 (let* ((case-fold-search t)
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160 (domain (if font-menu-this-frame-only-p
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161 (selected-frame)
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162 (selected-device)))
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163 (name (font-instance-name (face-font-instance face domain)))
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164 (truename (font-instance-truename
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165 (face-font-instance face domain
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166 (if (featurep 'mule) 'ascii))))
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167 family size weight entry slant)
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168 (when (string-match mswindows-font-regexp name)
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169 (setq family (match-string 1 name))
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170 (setq entry (vassoc family (aref dcache 0))))
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171 (when (and (null entry)
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172 (string-match mswindows-font-regexp truename))
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173 (setq family (match-string 1 truename))
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174 (setq entry (vassoc family (aref dcache 0))))
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175 (when (null entry)
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176 (return-from mswindows-font-menu-font-data (make-vector 5 nil)))
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177
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178 (when (string-match mswindows-font-regexp name)
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179 (setq weight (match-string 2 name))
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180 (setq size (string-to-int (match-string 4 name))))
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181
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182 (when (string-match mswindows-font-regexp truename)
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183 (when (not (member weight (aref entry 1)))
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184 (setq weight (match-string 2 truename)))
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185 (when (not (member size (aref entry 2)))
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186 (setq size (string-to-int (match-string 4 truename))))
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187 (setq slant (match-string 5 truename)))
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188
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189 (vector entry family size weight slant)))
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190
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191 (defun mswindows-font-menu-load-font (family weight size slant resolution)
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192 "Try to load a font with the requested properties.
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193 The weight, slant and resolution are only hints."
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194 (when (integerp size) (setq size (int-to-string size)))
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195 (let (font)
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196 (catch 'got-font
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197 (dolist (weight (list weight ""))
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198 (dolist (slant
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199 ;; oblique is not currently implemented
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200 (cond ((string-equal slant "Oblique") '(" Italic" ""))
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201 ((string-equal slant "Italic") '(" Italic" ""))
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202 (t (list slant ""))))
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203 (when (setq font
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204 (make-font-instance
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205 (concat family ":" weight slant ":"
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206 size "::"
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207 mswindows-font-menu-registry-encoding)
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208 nil t))
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209 (throw 'got-font font)))))))
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210
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211 (provide 'mswindows-font-menu)
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212
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213 ;;; msw-font-menu.el ends here
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