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28
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1 ;;; cus-face.el -- XEmacs specific custom support.
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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 ;; Keywords: help, faces
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7 ;; Version: 1.50
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8 ;; X-URL: http://www.dina.kvl.dk/~abraham/custom/
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9
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10 ;;; Commentary:
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11 ;;
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12 ;; See `custom.el'.
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13
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14 ;;; Code:
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15
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16 (require 'custom)
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17
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18 ;;; Compatibility.
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19
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20 (unless (fboundp 'frame-property)
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21 ;; XEmacs function missing in Emacs 19.34.
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22 (defun frame-property (frame property &optional default)
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23 "Return FRAME's value for property PROPERTY."
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24 (or (cdr (assq property (frame-parameters frame)))
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25 default)))
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26
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27 (unless (fboundp 'x-color-values)
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28 ;; Emacs function missing in XEmacs 19.14.
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29 (defun x-color-values (color &optional frame)
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30 "Return a description of the color named COLOR on frame FRAME.
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31 The value is a list of integer RGB values--(RED GREEN BLUE).
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32 These values appear to range from 0 to 65280 or 65535, depending
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33 on the system; white is (65280 65280 65280) or (65535 65535 65535).
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34 If FRAME is omitted or nil, use the selected frame."
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35 (color-instance-rgb-components (make-color-instance color))))
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36
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37 ;; XEmacs and Emacs have different definitions of `facep'.
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38 ;; The Emacs definition is the useful one, so emulate that.
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39 (cond ((not (fboundp 'facep))
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40 (defun custom-facep (face)
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41 "No faces"
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42 nil))
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43 ((string-match "XEmacs" emacs-version)
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44 (defalias 'custom-facep 'find-face))
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45 (t
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46 (defalias 'custom-facep 'facep)))
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47
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48 (unless (fboundp 'make-empty-face)
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49 ;; This should be moved to `faces.el'.
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50 (if (string-match "XEmacs" emacs-version)
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51 (defalias 'make-empty-face 'make-face)
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52 (defun make-empty-face (name)
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53 "Define a new FACE on all frames, ignoring X resources."
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54 (interactive "SMake face: ")
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55 (or (internal-find-face name)
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56 (let ((face (make-vector 8 nil)))
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57 (aset face 0 'face)
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58 (aset face 1 name)
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59 (let* ((frames (frame-list))
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60 (inhibit-quit t)
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61 (id (internal-next-face-id)))
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62 (make-face-internal id)
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63 (aset face 2 id)
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64 (while frames
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65 (set-frame-face-alist (car frames)
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66 (cons (cons name (copy-sequence face))
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67 (frame-face-alist (car frames))))
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68 (setq frames (cdr frames)))
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69 (setq global-face-data (cons (cons name face) global-face-data)))
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70 ;; add to menu
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71 (if (fboundp 'facemenu-add-new-face)
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72 (facemenu-add-new-face name))
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73 face))
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74 name)))
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75
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76 (defcustom initialize-face-resources t
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77 ;; Not implemented in XEmacs.
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78 "If non nil, allow X resources to initialize face properties.
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79 This only affects faces declared with `defface', and only NT or X11 frames."
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80 :group 'customize
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81 :type 'boolean)
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82
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83 (cond ((fboundp 'initialize-face-resources)
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84 ;; Already bound, do nothing.
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85 )
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86 ((fboundp 'make-face-x-resource-internal)
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87 ;; Emacs or new XEmacs.
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88 (defun initialize-face-resources (face &optional frame)
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89 "Initialize face according to the X11 resources.
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90 This might overwrite existing face properties.
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91 Does nothing when the variable initialize-face-resources is nil."
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92 (when initialize-face-resources
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93 (make-face-x-resource-internal face frame t))))
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94 (t
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95 ;; Too hard to do right on XEmacs.
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96 (defalias 'initialize-face-resources 'ignore)))
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97
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98 (if (string-match "XEmacs" emacs-version)
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99 (progn
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100 (defun custom-extract-frame-properties (frame)
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101 "Return a plist with the frame properties of FRAME used by custom."
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102 (list 'type (device-type (frame-device frame))
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103 'class (device-class (frame-device frame))
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104 'background (or custom-background-mode
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105 (frame-property frame
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106 'background-mode)
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107 (custom-background-mode frame))))
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108
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109 (defun face-documentation (face)
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110 "Get the documentation string for FACE."
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111 (face-property face 'doc-string))
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112
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113 (defun set-face-documentation (face string)
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114 "Set the documentation string for FACE to STRING."
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115 (set-face-property face 'doc-string string)))
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116
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117 (defun custom-extract-frame-properties (frame)
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118 "Return a plist with the frame properties of FRAME used by custom."
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119 (list 'type window-system
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120 'class (frame-property frame 'display-type)
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121 'background (or custom-background-mode
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122 (frame-property frame 'background-mode)
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123 (custom-background-mode frame))))
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124
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125 (defun face-documentation (face)
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126 "Get the documentation string for FACE."
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127 (get face 'face-documentation))
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128
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129 (defun set-face-documentation (face string)
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130 "Set the documentation string for FACE to STRING."
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131 (put face 'face-documentation string)))
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132
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133 ;;; Declaring a face.
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134
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135 ;;;###autoload
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136 (defun custom-declare-face (face spec doc &rest args)
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137 "Like `defface', but FACE is evaluated as a normal argument."
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138 (when (fboundp 'load-gc)
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139 ;; This should be allowed, somehow.
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140 (error "Attempt to declare a face during dump"))
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141 (unless (get face 'factory-face)
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142 (put face 'factory-face spec)
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143 (when (fboundp 'facep)
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144 (unless (and (custom-facep face)
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145 (not (get face 'saved-face)))
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146 ;; If the user has already created the face, respect that.
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147 (let ((value (or (get face 'saved-face) spec))
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148 (frames (custom-relevant-frames))
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149 frame)
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150 ;; Create global face.
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151 (make-empty-face face)
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152 (custom-face-display-set face value)
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153 ;; Create frame local faces
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154 (while frames
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155 (setq frame (car frames)
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156 frames (cdr frames))
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157 (custom-face-display-set face value frame))
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158 (initialize-face-resources face))))
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159 (when (and doc (null (face-documentation face)))
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160 (set-face-documentation face doc))
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161 (custom-handle-all-keywords face args 'custom-face)
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162 (run-hooks 'custom-define-hook))
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163 face)
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164
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165 ;;; Font Attributes.
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166
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167 (defun custom-face-attribites-set (face frame &rest atts)
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168 "For FACE on FRAME set the attributes [KEYWORD VALUE]....
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169 Each keyword should be listed in `custom-face-attributes'.
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170
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171 If FRAME is nil, set the default face."
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172 (while atts
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173 (let* ((name (nth 0 atts))
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174 (value (nth 1 atts))
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175 (fun (nth 2 (assq name custom-face-attributes))))
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176 (setq atts (cdr (cdr atts)))
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177 (condition-case nil
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178 (funcall fun face value frame)
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179 (error nil)))))
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180
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181 (defconst custom-face-attributes
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182 '((:bold (toggle :format "Bold: %[%v%]\n") custom-set-face-bold)
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183 (:italic (toggle :format "Italic: %[%v%]\n") custom-set-face-italic)
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184 (:underline
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185 (toggle :format "Underline: %[%v%]\n") set-face-underline-p)
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186 (:foreground (color :tag "Foreground") set-face-foreground)
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187 (:background (color :tag "Background") set-face-background)
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188 (:stipple (editable-field :format "Stipple: %v") set-face-stipple))
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189 "Alist of face attributes.
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190
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191 The elements are of the form (KEY TYPE SET) where KEY is a symbol
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192 identifying the attribute, TYPE is a widget type for editing the
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193 attibute, SET is a function for setting the attribute value.
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194
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195 The SET function should take three arguments, the face to modify, the
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196 value of the attribute, and optionally the frame where the face should
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197 be changed.")
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198
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199 (defun custom-set-face-bold (face value &optional frame)
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200 "Set the bold property of FACE to VALUE."
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201 (if value
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202 (make-face-bold face frame)
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203 (make-face-unbold face frame)))
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204
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205 (defun custom-set-face-italic (face value &optional frame)
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206 "Set the italic property of FACE to VALUE."
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207 (if value
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208 (make-face-italic face frame)
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209 (make-face-unitalic face frame)))
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210
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211 (when (string-match "XEmacs" emacs-version)
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212 ;; Support for special XEmacs font attributes.
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213 (autoload 'font-create-object "font" nil)
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214
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215 (unless (fboundp 'face-font-name)
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216 (defun face-font-name (face &rest args)
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217 (apply 'face-font face args)))
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218
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219 (defun custom-set-face-font-size (face size &rest args)
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220 "Set the font of FACE to SIZE"
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221 (let* ((font (apply 'face-font-name face args))
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222 (fontobj (font-create-object font)))
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223 (set-font-size fontobj size)
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224 (apply 'set-face-font face fontobj args)))
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225
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226 (defun custom-set-face-font-family (face family &rest args)
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227 "Set the font of FACE to FAMILY"
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228 (let* ((font (apply 'face-font-name face args))
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229 (fontobj (font-create-object font)))
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230 (set-font-family fontobj family)
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231 (apply 'set-face-font face fontobj args)))
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232
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233 (nconc custom-face-attributes
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234 '((:family (editable-field :format "Family: %v")
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235 custom-set-face-font-family)
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236 (:size (editable-field :format "Size: %v")
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237 custom-set-face-font-size)))
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238
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239 ;; Disable frame local faces.
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240 (setq custom-relevant-frames nil)
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241 (remove-hook 'after-make-frame-hook 'custom-initialize-frame))
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242
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243 ;;; Frames.
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244
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245 (defun custom-face-display-set (face spec &optional frame)
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246 "Set FACE to the attributes to the first matching entry in SPEC.
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247 Iff optional FRAME is non-nil, set it for that frame only.
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248 See `defface' for information about SPEC."
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249 (when (fboundp 'make-face)
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250 (while spec
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251 (let* ((entry (car spec))
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252 (display (nth 0 entry))
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253 (atts (nth 1 entry)))
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254 (setq spec (cdr spec))
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255 (when (custom-display-match-frame display frame)
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256 ;; Avoid creating frame local duplicates of the global face.
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257 (unless (and frame (eq display (get face 'custom-face-display)))
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258 (apply 'custom-face-attribites-set face frame atts))
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259 (unless frame
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260 (put face 'custom-face-display display))
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261 (setq spec nil))))))
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262
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263 (defcustom custom-background-mode nil
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264 "The brightness of the background.
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265 Set this to the symbol dark if your background color is dark, light if
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266 your background is light, or nil (default) if you want Emacs to
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267 examine the brightness for you."
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268 :group 'customize
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269 :type '(choice (choice-item dark)
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270 (choice-item light)
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271 (choice-item :tag "default" nil)))
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272
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273 (defun custom-background-mode (frame)
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274 "Kludge to detect background mode for FRAME."
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275 (let* ((bg-resource
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276 (condition-case ()
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277 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
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278 (error nil)))
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279 color
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280 (mode (cond (bg-resource
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281 (intern (downcase bg-resource)))
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282 ((and (setq color (condition-case ()
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283 (or (frame-property
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284 frame
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285 'background-color)
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286 (color-instance-name
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287 (specifier-instance
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288 (face-background 'default))))
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289 (error nil)))
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290 (or (string-match "XEmacs" emacs-version)
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291 window-system)
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292 (< (apply '+ (x-color-values color))
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293 (/ (apply '+ (x-color-values "white"))
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294 3)))
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295 'dark)
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296 (t 'light))))
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297 (modify-frame-parameters frame (list (cons 'background-mode mode)))
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298 mode))
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299
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300 (defvar custom-default-frame-properties nil
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301 "The frame properties used for the global faces.
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302 Frames who doesn't match these propertiess should have frame local faces.
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303 The value should be nil, if uninitialized, or a plist otherwise.
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304 See `defface' for a list of valid keys and values for the plist.")
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305
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306 (defun custom-get-frame-properties (&optional frame)
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307 "Return a plist with the frame properties of FRAME used by custom.
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308 If FRAME is nil, return the default frame properties."
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309 (cond (frame
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310 ;; Try to get from cache.
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311 (let ((cache (frame-property frame 'custom-properties)))
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312 (unless cache
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313 ;; Oh well, get it then.
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314 (setq cache (custom-extract-frame-properties frame))
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315 ;; and cache it...
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316 (modify-frame-parameters frame
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317 (list (cons 'custom-properties cache))))
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318 cache))
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319 (custom-default-frame-properties)
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320 (t
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321 (setq custom-default-frame-properties
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322 (custom-extract-frame-properties (selected-frame))))))
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323
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324 (defun custom-display-match-frame (display frame)
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325 "Non-nil iff DISPLAY matches FRAME.
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326 If FRAME is nil, the current FRAME is used."
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327 ;; This is a kludge to get started, we really should use specifiers!
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328 (if (eq display t)
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329 t
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330 (let* ((props (custom-get-frame-properties frame))
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331 (type (plist-get props 'type))
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332 (class (plist-get props 'class))
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333 (background (plist-get props 'background))
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334 (match t)
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335 (entries display)
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336 entry req options)
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337 (while (and entries match)
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338 (setq entry (car entries)
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339 entries (cdr entries)
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340 req (car entry)
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341 options (cdr entry)
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342 match (cond ((eq req 'type)
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343 (memq type options))
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344 ((eq req 'class)
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345 (memq class options))
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346 ((eq req 'background)
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347 (memq background options))
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348 (t
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349 (error "Unknown req `%S' with options `%S'"
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350 req options)))))
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351 match)))
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352
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353 (defvar custom-relevant-frames t
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354 "List of frames whose custom properties differ from the default.")
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355
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356 (defun custom-relevant-frames ()
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357 "List of frames whose custom properties differ from the default."
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358 (when (eq custom-relevant-frames t)
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359 (setq custom-relevant-frames nil)
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360 (let ((default (custom-get-frame-properties))
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361 (frames (frame-list))
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362 frame)
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363 (while frames
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364 (setq frame (car frames)
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365 frames (cdr frames))
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366 (unless (equal default (custom-get-frame-properties frame))
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367 (push frame custom-relevant-frames)))))
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368 custom-relevant-frames)
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369
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370 (defun custom-initialize-faces (&optional frame)
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371 "Initialize all custom faces for FRAME.
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372 If FRAME is nil or omitted, initialize them for all frames."
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373 (mapcar (lambda (symbol)
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374 (let ((spec (or (get symbol 'saved-face)
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375 (get symbol 'factory-face))))
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376 (when spec
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377 (custom-face-display-set symbol spec frame)
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378 (initialize-face-resources symbol frame))))
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379 (face-list)))
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380
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381 (defun custom-initialize-frame (&optional frame)
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382 "Initialize local faces for FRAME if necessary.
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383 If FRAME is missing or nil, the first member (frame-list) is used."
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384 (unless frame
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385 (setq frame (car (frame-list))))
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386 (unless (equal (custom-get-frame-properties)
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387 (custom-get-frame-properties frame))
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388 (custom-initialize-faces frame)
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389 (custom-relevant-frames)
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390 (push frame custom-relevant-frames)))
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391
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392 ;; Enable. This should go away when bundled with Emacs.
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393 (add-hook 'after-make-frame-hook 'custom-initialize-frame)
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394
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395 ;;; Initializing.
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396
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397 (and (fboundp 'make-face)
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398 (make-face 'custom-face-empty))
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399
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400 ;;;###autoload
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401 (defun custom-set-faces (&rest args)
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402 "Initialize faces according to user preferences.
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403 The arguments should be a list where each entry has the form:
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404
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405 (FACE SPEC [NOW])
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406
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407 SPEC will be stored as the saved value for FACE. If NOW is present
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408 and non-nil, FACE will also be created according to SPEC.
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409
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410 See `defface' for the format of SPEC."
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411 (while args
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412 (let ((entry (car args)))
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413 (if (listp entry)
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414 (let ((face (nth 0 entry))
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415 (spec (nth 1 entry))
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416 (now (nth 2 entry)))
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417 (put face 'saved-face spec)
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418 (when now
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419 (put face 'force-face t)
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420 (when (fboundp 'copy-face)
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421 (copy-face 'custom-face-empty face))
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422 (custom-face-display-set face spec))
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423 (setq args (cdr args)))
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424 ;; Old format, a plist of FACE SPEC pairs.
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425 (let ((face (nth 0 args))
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426 (spec (nth 1 args)))
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427 (put face 'saved-face spec))
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428 (setq args (cdr (cdr args)))))))
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429
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430 ;;; The End.
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431
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432 (provide 'cus-face)
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433
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434 ;; cus-face.el ends here
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