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428
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1 ;;; cus-face.el -- Support for Custom faces.
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2 ;;
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3 ;; Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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4 ;;
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5 ;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
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6 ;; Maintainer: Hrvoje Niksic <hniksic@xemacs.org>
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7 ;; Keywords: help, faces
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8 ;; Version: 1.9960-x
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9 ;; X-URL: http://www.dina.kvl.dk/~abraham/custom/
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10
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11 ;;; Commentary:
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12 ;;
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13 ;; See `custom.el'.
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14
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15 ;; This file should probably be dissolved, and code moved to faces.el,
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16 ;; like Stallman did.
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17
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18 ;;; Code:
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19
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771
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20 ;; it is now safe to put the `provide' anywhere. if an error occurs while
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21 ;; loading, all provides (and fsets) will be undone. put it first to
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22 ;; prevent require/provide loop with custom and cus-face.
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23 (provide 'cus-face)
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428
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24 (require 'custom)
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25
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26 ;; To elude the warnings for font functions.
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27 (eval-when-compile
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28 (require 'font))
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29
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30 ;;; Declaring a face.
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31
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32 ;;;###autoload
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33 (defun custom-declare-face (face spec doc &rest args)
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34 "Like `defface', but FACE is evaluated as a normal argument."
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35 ;; (when (fboundp 'pureload)
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36 ;; (error "Attempt to declare a face during dump"))
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37 ;; #### should we possibly reset force-face here?
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38 (unless (get face 'face-defface-spec)
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39 (put face 'face-defface-spec spec)
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40 (unless (find-face face)
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41 ;; If the user has already created the face, respect that.
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42 (let ((value (or (get face 'saved-face) spec))
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43 (frames (relevant-custom-frames))
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44 frame)
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45 ;; Create global face.
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46 (make-empty-face face)
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47 (face-display-set face value nil '(custom))
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48 ;; Create frame local faces
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49 (while frames
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50 (setq frame (car frames)
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51 frames (cdr frames))
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52 (face-display-set face value frame '(custom)))
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53 (init-face-from-resources face)))
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54 (when (and doc (null (face-doc-string face)))
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55 (set-face-doc-string face doc))
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56 (custom-handle-all-keywords face args 'custom-face)
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57 (run-hooks 'custom-define-hook))
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58 face)
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59
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60 ;;; Font Attributes.
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61
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444
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62 ;; Consider adding the stuff in the XML font model here.
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428
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63 (defconst custom-face-attributes
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64 '((:foreground (color :tag "Foreground"
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65 :value ""
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66 :help-echo "Set foreground color.")
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67 set-face-foreground face-foreground-name)
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68 (:background (color :tag "Background"
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69 :value ""
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70 :help-echo "Set background color.")
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71 set-face-background face-background-name)
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72 (:size (editable-field :format "Size: %v"
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73 :help-echo "\
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74 Text size (e.g. 9pt or 2mm).")
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75 custom-set-face-font-size custom-face-font-size)
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76 (:family (editable-field :format "Font Family: %v"
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77 :help-echo "\
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78 Name of font family to use (e.g. times).")
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79 custom-set-face-font-family custom-face-font-family)
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80 (:background-pixmap (editable-field :format "Background pixmap: %v"
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81 :help-echo "\
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82 Name of background pixmap file.")
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83 set-face-background-pixmap custom-face-background-pixmap)
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84 (:dim (toggle :format "%[Dim%]: %v\n"
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85 :help-echo "Control whether the text should be dimmed.")
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86 set-face-dim-p face-dim-p)
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87 (:bold (toggle :format "%[Bold%]: %v\n"
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88 :help-echo "Control whether a bold font should be used.")
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89 custom-set-face-bold custom-face-bold)
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90 (:italic (toggle :format "%[Italic%]: %v\n"
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91 :help-echo "\
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92 Control whether an italic font should be used.")
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93 custom-set-face-italic custom-face-italic)
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94 (:underline (toggle :format "%[Underline%]: %v\n"
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95 :help-echo "\
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96 Control whether the text should be underlined.")
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97 set-face-underline-p face-underline-p)
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98 (:strikethru (toggle :format "%[Strikethru%]: %v\n"
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99 :help-echo "\
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100 Control whether the text should be strikethru.")
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101 set-face-strikethru-p face-strikethru-p)
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102 (:inverse-video (toggle :format "%[Inverse Video%]: %v\n"
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103 :help-echo "\
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104 Control whether the text should be inverted. Works only on TTY-s")
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105 set-face-reverse-p face-reverse-p))
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444
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106 "Alist of face attributes.
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107
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108 The elements are lists of the form (KEY TYPE SET GET) where:
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109 KEY is a symbol identifying the attribute.
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110 TYPE is a widget type for editing the attribute.
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111 SET is a function for setting the attribute value.
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112 GET is a function for getting the attribute value.
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113
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114 The SET function should take three arguments: the face to modify, the
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115 value of the attribute, and optionally the frame where the face should
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116 be changed.
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117
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118 The GET function should take two arguments, the face to examine, and
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119 optionally the frame where the face should be examined.")
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120
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121 (defun face-custom-attributes-set (face frame tags &rest atts)
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122 "For FACE on FRAME set the attributes [KEYWORD VALUE]....
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123 Each keyword should be listed in `custom-face-attributes'.
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124
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125 If FRAME is nil, set the default face."
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126 (while atts
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127 (let* ((name (nth 0 atts))
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128 (value (nth 1 atts))
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129 (fun (nth 2 (assq name custom-face-attributes))))
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130 (setq atts (cdr (cdr atts)))
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131 (condition-case nil
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132 (funcall fun face value frame tags)
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133 (error nil)))))
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134
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135 (defun face-custom-attributes-get (face frame)
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136 "For FACE on FRAME get the attributes [KEYWORD VALUE]....
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137 Each keyword should be listed in `custom-face-attributes'.
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138
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139 If FRAME is nil, use the default face."
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140 (condition-case nil
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141 ;; Attempt to get `font.el' from w3.
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142 (require 'font)
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143 (error nil))
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144 (let ((atts custom-face-attributes)
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145 att result get)
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146 (while atts
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147 (setq att (car atts)
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148 atts (cdr atts)
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149 get (nth 3 att))
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150 (condition-case nil
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151 ;; This may fail if w3 doesn't exist.
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152 (when get
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153 (let ((answer (funcall get face frame)))
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154 (unless (equal answer (funcall get 'default frame))
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155 (when (widget-apply (nth 1 att) :match answer)
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156 (setq result (cons (nth 0 att) (cons answer result)))))))
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157 (error nil)))
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158 result))
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159
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160 (defsubst custom-face-get-spec (symbol)
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161 (or (get symbol 'customized-face)
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162 (get symbol 'saved-face)
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163 (get symbol 'face-defface-spec)
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164 ;; Attempt to construct it.
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165 (list (list t (face-custom-attributes-get
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166 symbol (selected-frame))))))
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167
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168 (defun custom-set-face-bold (face value &optional frame tags)
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169 "Set the bold property of FACE to VALUE."
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170 (if value
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171 (make-face-bold face frame tags)
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172 (make-face-unbold face frame tags)))
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173
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174 ;; Really, we should get rid of these font.el dependencies... They
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175 ;; are still presenting a problem with dumping the faces (font.el is
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176 ;; too bloated for us to dump). I am thinking about hacking up
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177 ;; font-like functionality myself for the sake of this file. It will
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178 ;; probably be to-the-point and more efficient.
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179
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180 (defun custom-face-bold (face &rest args)
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181 "Return non-nil if the font of FACE is bold."
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182 (let* ((font (apply 'face-font-name face args))
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183 ;; Gag
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184 (fontobj (font-create-object font)))
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185 (font-bold-p fontobj)))
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186
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187 (defun custom-set-face-italic (face value &optional frame tags)
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188 "Set the italic property of FACE to VALUE."
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189 (if value
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190 (make-face-italic face frame tags)
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191 (make-face-unitalic face frame tags)))
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192
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193 (defun custom-face-italic (face &rest args)
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194 "Return non-nil if the font of FACE is italic."
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195 (let* ((font (apply 'face-font-name face args))
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196 ;; Gag
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197 (fontobj (font-create-object font)))
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198 (font-italic-p fontobj)))
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199
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200 (defun custom-face-background-pixmap (face &rest args)
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201 "Return the name of the background pixmap file used for FACE."
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444
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202 (let ((image (apply 'specifier-instance
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428
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203 (face-background-pixmap face) args)))
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444
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204 (and image
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428
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205 (image-instance-file-name image))))
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206
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707
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207 ;; This consistently fails to dtrt
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208 ;;(defun custom-set-face-font-size (face size &optional locale tags)
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209 ;; "Set the font of FACE to SIZE."
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210 ;; ;; #### should this call have tags in it?
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211 ;; (let* ((font (apply 'face-font-name face (list locale)))
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212 ;; ;; Gag
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213 ;; (fontobj (font-create-object font)))
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214 ;; (set-font-size fontobj size)
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215 ;; (apply 'font-set-face-font face fontobj locale tags)))
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216
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217 ;; From Jan Vroonhof -- see faces.el
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428
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218 (defun custom-set-face-font-size (face size &optional locale tags)
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444
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219 "Set the font of FACE to SIZE."
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220 (make-face-size face size locale tags))
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221
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222 (defun custom-face-font-size (face &rest args)
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223 "Return the size of the font of FACE as a string."
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224 (let* ((font (apply 'face-font-name face args))
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225 ;; Gag
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226 (fontobj (font-create-object font)))
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227 (format "%s" (font-size fontobj))))
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228
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707
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229 ;; Jan suggests this may not dtrt
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230 ;;(defun custom-set-face-font-family (face family &optional locale tags)
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231 ;; "Set the font of FACE to FAMILY."
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232 ;; ;; #### should this call have tags in it?
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233 ;; (let* ((font (apply 'face-font-name face (list locale)))
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234 ;; ;; Gag
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235 ;; (fontobj (font-create-object font)))
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236 ;; (set-font-family fontobj family)
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237 ;; (apply 'font-set-face-font face fontobj locale tags)))
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238
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239 ;; From Jan Vroonhof -- see faces.el
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428
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240 (defun custom-set-face-font-family (face family &optional locale tags)
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241 "Set the font of FACE to FAMILY."
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242 (make-face-family face family locale tags))
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243
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244 (defun custom-face-font-family (face &rest args)
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245 "Return the name of the font family of FACE."
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246 (let* ((font (apply 'face-font-name face args))
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247 ;; Gag
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248 (fontobj (font-create-object font)))
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249 (font-family fontobj)))
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250
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251 ;;;###autoload
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252 (defun custom-set-face-update-spec (face display plist)
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253 "Customize the FACE for display types matching DISPLAY, merging
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254 in the new items from PLIST."
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428
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255 (let ((spec (face-spec-update-all-matching (custom-face-get-spec face)
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256 display plist)))
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257 (put face 'customized-face spec)
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258 (face-spec-set face spec nil '(custom))))
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259
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260 ;;; Initializing.
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261
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262 ;;;###autoload
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263 (defun custom-set-faces (&rest args)
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264 "Initialize faces according to user preferences.
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265 This asociates the setting with the USER theme.
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266 The arguments should be a list where each entry has the form:
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267
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268 (FACE SPEC [NOW [COMMENT]])
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269
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270 SPEC will be stored as the saved value for FACE. If NOW is present
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271 and non-nil, FACE will also be created according to SPEC.
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272 COMMENT is a string comment about FACE.
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273
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274 See `defface' for the format of SPEC."
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275 (apply #'custom-theme-set-faces 'user args))
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276
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277 ;;;###autoload
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278 (defun custom-theme-set-faces (theme &rest args)
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279 "Initialize faces according to settings specified by args.
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280 Records the settings as belonging to THEME.
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281
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282 See `custom-set-faces' for a description of the arguments ARGS."
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283 (custom-check-theme theme)
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284 (let ((immediate (get theme 'theme-immediate)))
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285 (while args
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286 (let ((entry (car args)))
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287 (if (listp entry)
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288 (let ((face (nth 0 entry))
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289 (spec (nth 1 entry))
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290 (now (nth 2 entry))
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291 (comment (nth 3 entry)))
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292 (put face 'saved-face spec)
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293 (custom-push-theme 'theme-face face theme 'set spec)
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294 (put face 'saved-face-comment comment)
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295 (when (or now immediate)
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296 (put face 'force-face (if now 'rogue 'immediate)))
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297 (when (or now immediate (find-face face))
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298 (put face 'face-comment comment)
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299 (unless (find-face face)
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300 (make-empty-face face))
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301 (face-spec-set face spec nil '(custom)))
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302 (setq args (cdr args)))
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303 ;; Old format, a plist of FACE SPEC pairs.
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304 (let ((face (nth 0 args))
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305 (spec (nth 1 args)))
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306 (put face 'saved-face spec)
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307 (custom-push-theme 'theme-face face theme 'set spec))
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308 (setq args (cdr (cdr args))))))))
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309
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310 ;;;###autoload
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311 (defun custom-theme-face-value (face theme)
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312 "Return spec of FACE in THEME if the THEME modifies the
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313 FACE. Nil otherwise."
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314 (car-safe (custom-theme-value theme (get face 'theme-face))))
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315
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316 (defun custom-theme-reset-internal-face (face to-theme)
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317 (let ((spec (custom-theme-face-value face to-theme))
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318 was-in-theme)
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319 (setq was-in-theme spec)
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320 (setq spec (or spec (get face 'standard-value)))
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321 (when spec
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322 (put face 'save-face was-in-theme)
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323 (when (or (get face 'force-face) (find-face face))
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324 (unless (find-face face)
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325 (make-empty-face face))
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326 (face-spec-set face spec)))
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327 spec))
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328
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329 ;;;###autoload
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330 (defun custom-theme-reset-faces (theme &rest args)
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331 (custom-check-theme theme)
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332 "Reset the value of the face to values previously defined.
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442
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333 Associate this setting with THEME.
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428
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334
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335 ARGS is a list of lists of the form
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336
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337 (face to-theme)
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338
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339 This means reset face to its value in to-theme."
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340 (mapc #'(lambda (arg)
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341 (apply #'custom-theme-reset-internal-face arg)
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342 (custom-push-theme (car arg) 'theme-face theme 'reset (cadr arg)))
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343 args))
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344
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345 ;;;###autoload
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346 (defun custom-reset-faces (&rest args)
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347 "Reset the value of the face to values previously defined.
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442
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348 Associate this setting with the 'user' theme.
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428
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349
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444
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350 ARGS is defined as for `custom-theme-reset-faces'."
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428
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351 (apply #'custom-theme-reset-faces 'user args))
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352
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353
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354 ;;; The End.
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355
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356 ;; cus-face.el ends here
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