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1 ;;; msw-faces.el --- mswindows-specific face stuff.
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2
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3 ;;; Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
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4 ;;; Copyright (C) 1995, 1996 Ben Wing.
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5
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6 ;; Author: Jamie Zawinski
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7 ;; Modified by: Chuck Thompson
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8 ;; Modified by: Ben Wing
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9 ;; Modified by: Martin Buchholz
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10 ;; Rewritten for mswindows by: Jonathan Harris
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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, Inc., 59 Temple Place - Suite 330,
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27 ;; Boston, MA 02111-1307, USA.
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28
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29 ;; This file does the magic to parse mswindows font names, and make sure that
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30 ;; the default and modeline attributes of new frames are specified enough.
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31
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32 ;;; Force creation of the default face font so that if it fails we get an
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33 ;;; error now instead of a crash at frame creation.
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34 (defun mswindows-init-device-faces (device)
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35 (unless (face-font-instance 'default device)
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36 (error "Can't find a suitable default font")))
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37
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38
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39 (defun mswindows-init-frame-faces (frame)
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40 )
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41
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42 ;; Other functions expect these regexps
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43 (defconst mswindows-font-regexp
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44 (let
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45 ((- ":")
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46 (fontname "\\([a-zA-Z ]+\\)")
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47 (weight "\\([a-zA-Z]*\\)?")
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48 (style "\\( [a-zA-Z]*\\)?")
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49 (pointsize "\\([0-9]+\\)?")
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50 (effects "\\([a-zA-Z ]*\\)?")
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51 (charset "\\([a-zA-Z 0-9]*\\)")
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52 )
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53 (concat "^"
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54 fontname - weight style - pointsize - effects - charset "$")))
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55
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56 ;;; Fill in missing parts of a font spec. This is primarily intended as a
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57 ;;; helper function for the functions below.
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58 ;;; mswindows fonts look like:
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59 ;;; fontname[:[weight][ style][:pointsize[:effects]]][:charset]
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60 ;;; A minimal mswindows font spec looks like:
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61 ;;; Courier New
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62 ;;; A maximal mswindows font spec looks like:
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63 ;;; Courier New:Bold Italic:10:underline strikeout:Western
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64 ;;; Missing parts of the font spec should be filled in with these values:
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65 ;;; Courier New:Regular:10::Western
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66 (defun mswindows-font-canonicalize-name (font)
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67 "Given a mswindows font or font name, this returns its name in
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68 canonical form."
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69 (if (or (font-instance-p font)
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70 (stringp font))
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71 (let ((name (if (font-instance-p font)
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72 (font-instance-name font)
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73 font)))
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74 (cond ((string-match
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75 "^[a-zA-Z ]+:[a-zA-Z ]*:[0-9]+:[a-zA-Z ]*:[a-zA-Z 0-9]*$"
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76 name) name)
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77 ((string-match "^[a-zA-Z ]+:[a-zA-Z ]*:[0-9]+:[a-zA-Z ]*$"
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78 name) (concat name ":Western"))
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79 ((string-match "^[a-zA-Z ]+:[a-zA-Z ]*:[0-9]+$" name)
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80 (concat name "::Western"))
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81 ((string-match "^[a-zA-Z ]+:[a-zA-Z ]*$" name)
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82 (concat name ":10::Western"))
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83 ((string-match "^[a-zA-Z ]+$" name)
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84 (concat name ":Regular:10::Western"))
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85 (t "Courier New:Regular:10::Western")))))
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86
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87 (defun mswindows-make-font-bold (font &optional device)
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88 "Given a mswindows font specification, this attempts to make a bold font.
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89 If it fails, it returns nil."
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90 (if (font-instance-p font)
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91 (let ((name (mswindows-font-canonicalize-name font))
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92 (oldwidth (font-instance-width font)))
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93 (string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
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94 (let ((newfont (make-font-instance
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95 (concat (substring name 0 (match-beginning 1))
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96 "Bold" (substring name (match-end 1)))
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97 device t)))
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98 ; Hack! on mswindows, bold fonts (even monospaced) are often wider than the
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99 ; equivalent non-bold font. Making the bold font one point smaller usually
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100 ; makes it the same width (maybe at the expense of making it one pixel shorter)
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101 (if (font-instance-p newfont)
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102 (if (> (font-instance-width newfont) oldwidth)
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103 (mswindows-find-smaller-font newfont device)
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104 newfont))))))
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105
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106 (defun mswindows-make-font-unbold (font &optional device)
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107 "Given a mswindows font specification, this attempts to make a non-bold font.
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108 If it fails, it returns nil."
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109 (if (font-instance-p font)
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110 (let ((name (mswindows-font-canonicalize-name font)))
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111 (string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
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112 (make-font-instance (concat
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113 (substring name 0 (match-beginning 1))
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114 "Regular" (substring name (match-end 1)))
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115 device t))))
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116
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117 (defun mswindows-make-font-italic (font &optional device)
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118 "Given a mswindows font specification, this attempts to make an `italic'
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119 font. If it fails, it returns nil."
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120 (if (font-instance-p font)
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121 (let ((name (mswindows-font-canonicalize-name font)))
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122 (string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
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123 (make-font-instance (concat
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124 (substring name 0 (match-beginning 1))
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125 "Italic" (substring name (match-end 1)))
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126 device t))))
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127
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128 (defun mswindows-make-font-unitalic (font &optional device)
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129 "Given a mswindows font specification, this attempts to make a non-italic
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130 font. If it fails, it returns nil."
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131 (if (font-instance-p font)
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132 (let ((name (mswindows-font-canonicalize-name font)))
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133 (string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
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134 (make-font-instance (concat
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135 (substring name 0 (match-beginning 1))
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136 "Regular" (substring name (match-end 1)))
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137 device t))))
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138
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139 (defun mswindows-make-font-bold-italic (font &optional device)
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140 "Given a mswindows font specification, this attempts to make a `bold-italic'
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141 font. If it fails, it returns nil."
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142 (if (font-instance-p font)
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143 (let ((name (mswindows-font-canonicalize-name font))
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144 (oldwidth (font-instance-width font)))
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145 (string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
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146 (let ((newfont (make-font-instance
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147 (concat (substring name 0 (match-beginning 1))
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148 "Bold Italic" (substring name (match-end 1)))
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149 device t)))
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150 ; Hack! on mswindows, bold fonts (even monospaced) are often wider than the
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151 ; equivalent non-bold font. Making the bold font one point smaller usually
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152 ; makes it the same width (maybe at the expense of making it one pixel shorter)
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153 (if (font-instance-p newfont)
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154 (if (> (font-instance-width newfont) oldwidth)
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155 (mswindows-find-smaller-font newfont device)
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156 newfont))))))
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157
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158 (defun mswindows-find-smaller-font (font &optional device)
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159 "Loads a new version of the given font (or font name) 1 point smaller.
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160 Returns the font if it succeeds, nil otherwise."
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161 (if (stringp font) (setq font (make-font-instance font device)))
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162 (if (font-instance-p font) (setq font (font-instance-truename font)))
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163 (if (stringp font) (setq font (make-font-instance font device)))
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164 (if (font-instance-p font)
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165 (let (old-size (name (mswindows-font-canonicalize-name font)))
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166 (string-match "^[a-zA-Z ]+:[a-zA-Z ]*:\\([0-9]+\\):" name)
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167 (setq old-size (string-to-int
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168 (substring name (match-beginning 1) (match-end 1))))
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169 (if (> old-size 0)
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170 (make-font-instance (concat
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171 (substring name 0 (match-beginning 1))
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172 (int-to-string (- old-size 1))
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173 (substring name (match-end 1)))
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174 device t)))))
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175
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176 (defun mswindows-find-larger-font (font &optional device)
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177 "Loads a new version of the given font (or font name) 1 point larger.
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178 Returns the font if it succeeds, nil otherwise."
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179 (if (stringp font) (setq font (make-font-instance font device)))
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180 (if (font-instance-p font) (setq font (font-instance-truename font)))
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181 (if (stringp font) (setq font (make-font-instance font device)))
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182 (if (font-instance-p font)
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183 (let (old-size (name (mswindows-font-canonicalize-name font)))
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184 (string-match "^[a-zA-Z ]+:[a-zA-Z ]*:\\([0-9]+\\):" name)
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185 (setq old-size (string-to-int
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186 (substring name (match-beginning 1) (match-end 1))))
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187 (make-font-instance (concat
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188 (substring name 0 (match-beginning 1))
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189 (int-to-string (+ old-size 1))
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190 (substring name (match-end 1)))
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191 device t))))
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