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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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32
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7 ;; Version: 1.63
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28
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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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30
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18 (eval-and-compile (require 'cl))
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19
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28
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20 ;;; Compatibility.
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21
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30
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22 (eval-and-compile
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23 (unless (fboundp 'frame-property)
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24 ;; XEmacs function missing in Emacs 19.34.
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25 (defun frame-property (frame property &optional default)
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26 "Return FRAME's value for property PROPERTY."
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27 (or (cdr (assq property (frame-parameters frame)))
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28 default)))
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29
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30 (unless (fboundp 'face-doc-string)
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31 ;; XEmacs function missing in Emacs.
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32 (defun face-doc-string (face)
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33 "Get the documentation string for FACE."
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34 (get face 'face-doc-string)))
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35
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36 (unless (fboundp 'set-face-doc-string)
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37 ;; XEmacs function missing in Emacs.
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38 (defun set-face-doc-string (face string)
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39 "Set the documentation string for FACE to STRING."
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40 (put face 'face-doc-string string))))
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28
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41
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42 (unless (fboundp 'x-color-values)
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43 ;; Emacs function missing in XEmacs 19.14.
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44 (defun x-color-values (color &optional frame)
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45 "Return a description of the color named COLOR on frame FRAME.
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46 The value is a list of integer RGB values--(RED GREEN BLUE).
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47 These values appear to range from 0 to 65280 or 65535, depending
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48 on the system; white is (65280 65280 65280) or (65535 65535 65535).
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49 If FRAME is omitted or nil, use the selected frame."
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50 (color-instance-rgb-components (make-color-instance color))))
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51
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52 ;; XEmacs and Emacs have different definitions of `facep'.
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53 ;; The Emacs definition is the useful one, so emulate that.
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54 (cond ((not (fboundp 'facep))
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55 (defun custom-facep (face)
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56 "No faces"
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57 nil))
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58 ((string-match "XEmacs" emacs-version)
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59 (defalias 'custom-facep 'find-face))
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60 (t
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61 (defalias 'custom-facep 'facep)))
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62
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63 (unless (fboundp 'make-empty-face)
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64 ;; This should be moved to `faces.el'.
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65 (if (string-match "XEmacs" emacs-version)
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30
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66 ;; Give up for old XEmacs pre 19.15/20.1.
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28
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67 (defalias 'make-empty-face 'make-face)
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30
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68 ;; Define for Emacs pre 19.35.
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28
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69 (defun make-empty-face (name)
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70 "Define a new FACE on all frames, ignoring X resources."
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71 (interactive "SMake face: ")
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72 (or (internal-find-face name)
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73 (let ((face (make-vector 8 nil)))
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74 (aset face 0 'face)
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75 (aset face 1 name)
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76 (let* ((frames (frame-list))
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77 (inhibit-quit t)
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78 (id (internal-next-face-id)))
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79 (make-face-internal id)
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80 (aset face 2 id)
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81 (while frames
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82 (set-frame-face-alist (car frames)
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83 (cons (cons name (copy-sequence face))
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84 (frame-face-alist (car frames))))
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85 (setq frames (cdr frames)))
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86 (setq global-face-data (cons (cons name face) global-face-data)))
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87 ;; add to menu
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88 (if (fboundp 'facemenu-add-new-face)
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89 (facemenu-add-new-face name))
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90 face))
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91 name)))
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92
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93 (defcustom initialize-face-resources t
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94 "If non nil, allow X resources to initialize face properties.
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95 This only affects faces declared with `defface', and only NT or X11 frames."
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96 :group 'customize
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97 :type 'boolean)
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98
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99 (cond ((fboundp 'initialize-face-resources)
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100 ;; Already bound, do nothing.
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101 )
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102 ((fboundp 'make-face-x-resource-internal)
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103 ;; Emacs or new XEmacs.
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104 (defun initialize-face-resources (face &optional frame)
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105 "Initialize face according to the X11 resources.
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106 This might overwrite existing face properties.
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107 Does nothing when the variable initialize-face-resources is nil."
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108 (when initialize-face-resources
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109 (make-face-x-resource-internal face frame t))))
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110 (t
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111 ;; Too hard to do right on XEmacs.
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112 (defalias 'initialize-face-resources 'ignore)))
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113
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114 (if (string-match "XEmacs" emacs-version)
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30
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115 ;; Xemacs.
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116 (defun custom-invert-face (face &optional frame)
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117 "Swap the foreground and background colors of face FACE.
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118 If the colors are not specified in the face, use the default colors."
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119 (interactive (list (read-face-name "Reverse face: ")))
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120 (let ((fg (color-name (face-foreground face frame) frame))
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121 (bg (color-name (face-background face frame) frame)))
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122 (set-face-foreground face bg frame)
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123 (set-face-background face fg frame)))
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124 ;; Emacs.
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125 (defun custom-invert-face (face &optional frame)
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126 "Swap the foreground and background colors of face FACE.
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127 If the colors are not specified in the face, use the default colors."
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128 (interactive (list (read-face-name "Reverse face: ")))
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129 (let ((fg (or (face-foreground face frame)
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130 (face-foreground 'default frame)
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131 (frame-property (or frame (selected-frame))
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132 'foreground-color)
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133 "black"))
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134 (bg (or (face-background face frame)
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135 (face-background 'default frame)
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136 (frame-property (or frame (selected-frame))
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137 'background-color)
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138 "white")))
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139 (set-face-foreground face bg frame)
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140 (set-face-background face fg frame))))
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28
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141
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142 (defcustom custom-background-mode nil
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143 "The brightness of the background.
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144 Set this to the symbol dark if your background color is dark, light if
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145 your background is light, or nil (default) if you want Emacs to
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146 examine the brightness for you."
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147 :group 'customize
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148 :type '(choice (choice-item dark)
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149 (choice-item light)
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150 (choice-item :tag "default" nil)))
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151
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152 (defun custom-background-mode (frame)
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153 "Kludge to detect background mode for FRAME."
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154 (let* ((bg-resource
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155 (condition-case ()
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156 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
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157 (error nil)))
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158 color
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159 (mode (cond (bg-resource
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160 (intern (downcase bg-resource)))
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161 ((and (setq color (condition-case ()
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162 (or (frame-property
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163 frame
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164 'background-color)
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165 (color-instance-name
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166 (specifier-instance
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167 (face-background 'default))))
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168 (error nil)))
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169 (or (string-match "XEmacs" emacs-version)
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170 window-system)
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171 (< (apply '+ (x-color-values color))
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172 (/ (apply '+ (x-color-values "white"))
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173 3)))
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174 'dark)
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175 (t 'light))))
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176 (modify-frame-parameters frame (list (cons 'background-mode mode)))
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177 mode))
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178
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30
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179 (eval-and-compile
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180 (if (string-match "XEmacs" emacs-version)
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181 ;; XEmacs.
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182 (defun custom-extract-frame-properties (frame)
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183 "Return a plist with the frame properties of FRAME used by custom."
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184 (list 'type (device-type (frame-device frame))
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185 'class (device-class (frame-device frame))
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186 'background (or custom-background-mode
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187 (frame-property frame
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188 'background-mode)
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189 (custom-background-mode frame))))
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190 ;; Emacs.
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191 (defun custom-extract-frame-properties (frame)
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192 "Return a plist with the frame properties of FRAME used by custom."
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193 (list 'type window-system
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194 'class (frame-property frame 'display-type)
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195 'background (or custom-background-mode
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196 (frame-property frame 'background-mode)
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197 (custom-background-mode frame))))))
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198
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199 ;;; Declaring a face.
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200
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201 ;;;###autoload
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202 (defun custom-declare-face (face spec doc &rest args)
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203 "Like `defface', but FACE is evaluated as a normal argument."
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204 (when (fboundp 'load-gc)
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205 ;; This should be allowed, somehow.
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206 (error "Attempt to declare a face during dump"))
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207 (unless (get face 'factory-face)
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208 (put face 'factory-face spec)
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209 (when (fboundp 'facep)
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32
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210 (unless (custom-facep face)
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30
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211 ;; If the user has already created the face, respect that.
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212 (let ((value (or (get face 'saved-face) spec))
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213 (frames (custom-relevant-frames))
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214 frame)
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215 ;; Create global face.
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216 (make-empty-face face)
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217 (custom-face-display-set face value)
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218 ;; Create frame local faces
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219 (while frames
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220 (setq frame (car frames)
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221 frames (cdr frames))
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222 (custom-face-display-set face value frame))
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223 (initialize-face-resources face))))
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224 (when (and doc (null (face-doc-string face)))
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225 (set-face-doc-string face doc))
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226 (custom-handle-all-keywords face args 'custom-face)
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227 (run-hooks 'custom-define-hook))
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228 face)
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229
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230 ;;; Font Attributes.
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231
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232 (defconst custom-face-attributes
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233 '((:bold (toggle :format "Bold: %[%v%]\n"
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234 :help-echo "Control whether a bold font should be used.")
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235 custom-set-face-bold)
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236 (:italic (toggle :format "Italic: %[%v%]\n"
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237 :help-echo "\
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238 Control whether an italic font should be used.")
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239 custom-set-face-italic)
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240 (:underline (toggle :format "Underline: %[%v%]\n"
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241 :help-echo "\
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242 Control whether the text should be underlined.")
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243 set-face-underline-p)
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244 (:foreground (color :tag "Foreground"
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245 :value "black"
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246 :help-echo "Set foreground color.")
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247 set-face-foreground)
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248 (:background (color :tag "Background"
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249 :value "white"
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250 :help-echo "Set background color.")
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251 set-face-background)
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252 (:invert (const :format "Invert Face\n"
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253 :sibling-args (:help-echo "\
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254 Reverse the foreground and background color.
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255 If you haven't specified them for the face, the default colors will be used.")
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256 t)
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257 (lambda (face value &optional frame)
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258 ;; We don't use VALUE.
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259 (custom-invert-face face frame)))
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260 (:stipple (editable-field :format "Stipple: %v"
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261 :help-echo "Name of background bitmap file.")
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262 set-face-stipple))
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263 "Alist of face attributes.
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264
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265 The elements are of the form (KEY TYPE SET) where KEY is a symbol
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266 identifying the attribute, TYPE is a widget type for editing the
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267 attibute, SET is a function for setting the attribute value.
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268
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269 The SET function should take three arguments, the face to modify, the
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270 value of the attribute, and optionally the frame where the face should
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271 be changed.")
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272
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273 (defun custom-face-attributes-set (face frame &rest atts)
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274 "For FACE on FRAME set the attributes [KEYWORD VALUE]....
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275 Each keyword should be listed in `custom-face-attributes'.
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276
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277 If FRAME is nil, set the default face."
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278 (while atts
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279 (let* ((name (nth 0 atts))
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280 (value (nth 1 atts))
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281 (fun (nth 2 (assq name custom-face-attributes))))
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282 (setq atts (cdr (cdr atts)))
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283 (condition-case nil
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284 (funcall fun face value frame)
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285 (error nil)))))
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286
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287 (defun custom-set-face-bold (face value &optional frame)
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288 "Set the bold property of FACE to VALUE."
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289 (if value
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290 (make-face-bold face frame)
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291 (make-face-unbold face frame)))
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292
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293 (defun custom-set-face-italic (face value &optional frame)
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294 "Set the italic property of FACE to VALUE."
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295 (if value
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296 (make-face-italic face frame)
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297 (make-face-unitalic face frame)))
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298
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299 (when (string-match "XEmacs" emacs-version)
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300 ;; Support for special XEmacs font attributes.
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301 (autoload 'font-create-object "font" nil)
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302
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303 (unless (fboundp 'face-font-name)
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304 (defun face-font-name (face &rest args)
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305 (apply 'face-font face args)))
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306
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307 (defun custom-set-face-font-size (face size &rest args)
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308 "Set the font of FACE to SIZE"
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309 (let* ((font (apply 'face-font-name face args))
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310 (fontobj (font-create-object font)))
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311 (set-font-size fontobj size)
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32
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312 (apply 'font-set-face-font face fontobj args)))
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30
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313
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314 (defun custom-set-face-font-family (face family &rest args)
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315 "Set the font of FACE to FAMILY"
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316 (let* ((font (apply 'face-font-name face args))
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317 (fontobj (font-create-object font)))
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318 (set-font-family fontobj family)
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32
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319 (apply 'font-set-face-font face fontobj args)))
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30
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320
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321 (nconc custom-face-attributes
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322 '((:family (editable-field :format "Font Family: %v"
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323 :help-echo "\
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324 Name of font family to use (e.g. times).")
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325 custom-set-face-font-family)
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326 (:size (editable-field :format "Size: %v"
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327 :help-echo "\
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328 Text size (e.g. 9pt or 2mm).")
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329 custom-set-face-font-size))))
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330
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331 ;;; Frames.
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332
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333 (defun custom-face-display-set (face spec &optional frame)
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334 "Set FACE to the attributes to the first matching entry in SPEC.
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335 Iff optional FRAME is non-nil, set it for that frame only.
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336 See `defface' for information about SPEC."
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337 (when (fboundp 'make-face)
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338 (while spec
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339 (let* ((entry (car spec))
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340 (display (nth 0 entry))
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341 (atts (nth 1 entry)))
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342 (setq spec (cdr spec))
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343 (when (custom-display-match-frame display frame)
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344 ;; Avoid creating frame local duplicates of the global face.
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345 (unless (and frame (eq display (get face 'custom-face-display)))
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346 (apply 'custom-face-attributes-set face frame atts))
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347 (unless frame
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348 (put face 'custom-face-display display))
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349 (setq spec nil))))))
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350
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28
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351 (defvar custom-default-frame-properties nil
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352 "The frame properties used for the global faces.
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353 Frames who doesn't match these propertiess should have frame local faces.
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354 The value should be nil, if uninitialized, or a plist otherwise.
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355 See `defface' for a list of valid keys and values for the plist.")
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356
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357 (defun custom-get-frame-properties (&optional frame)
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358 "Return a plist with the frame properties of FRAME used by custom.
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359 If FRAME is nil, return the default frame properties."
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360 (cond (frame
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361 ;; Try to get from cache.
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362 (let ((cache (frame-property frame 'custom-properties)))
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363 (unless cache
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364 ;; Oh well, get it then.
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365 (setq cache (custom-extract-frame-properties frame))
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366 ;; and cache it...
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367 (modify-frame-parameters frame
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368 (list (cons 'custom-properties cache))))
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369 cache))
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370 (custom-default-frame-properties)
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371 (t
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372 (setq custom-default-frame-properties
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373 (custom-extract-frame-properties (selected-frame))))))
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374
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375 (defun custom-display-match-frame (display frame)
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376 "Non-nil iff DISPLAY matches FRAME.
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377 If FRAME is nil, the current FRAME is used."
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378 ;; This is a kludge to get started, we really should use specifiers!
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379 (if (eq display t)
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380 t
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381 (let* ((props (custom-get-frame-properties frame))
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382 (type (plist-get props 'type))
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383 (class (plist-get props 'class))
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384 (background (plist-get props 'background))
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385 (match t)
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386 (entries display)
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387 entry req options)
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388 (while (and entries match)
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389 (setq entry (car entries)
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390 entries (cdr entries)
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391 req (car entry)
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392 options (cdr entry)
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393 match (cond ((eq req 'type)
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394 (memq type options))
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395 ((eq req 'class)
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396 (memq class options))
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397 ((eq req 'background)
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398 (memq background options))
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399 (t
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400 (error "Unknown req `%S' with options `%S'"
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401 req options)))))
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402 match)))
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403
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404 (defun custom-relevant-frames ()
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405 "List of frames whose custom properties differ from the default."
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30
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406 (let ((relevant nil)
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407 (default (custom-get-frame-properties))
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408 (frames (frame-list))
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409 frame)
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410 (while frames
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411 (setq frame (car frames)
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412 frames (cdr frames))
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413 (unless (equal default (custom-get-frame-properties frame))
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414 (push frame relevant)))
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415 relevant))
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28
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416
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417 (defun custom-initialize-faces (&optional frame)
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418 "Initialize all custom faces for FRAME.
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419 If FRAME is nil or omitted, initialize them for all frames."
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420 (mapcar (lambda (symbol)
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421 (let ((spec (or (get symbol 'saved-face)
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422 (get symbol 'factory-face))))
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423 (when spec
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424 (custom-face-display-set symbol spec frame)
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425 (initialize-face-resources symbol frame))))
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426 (face-list)))
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427
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428 (defun custom-initialize-frame (&optional frame)
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429 "Initialize local faces for FRAME if necessary.
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430 If FRAME is missing or nil, the first member (frame-list) is used."
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431 (unless frame
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432 (setq frame (car (frame-list))))
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433 (unless (equal (custom-get-frame-properties)
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434 (custom-get-frame-properties frame))
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30
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435 (custom-initialize-faces frame)))
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28
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436
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437 ;; Enable. This should go away when bundled with Emacs.
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30
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438 (unless (string-match "XEmacs" emacs-version)
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439 (add-hook 'after-make-frame-hook 'custom-initialize-frame))
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28
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440
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441 ;;; Initializing.
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442
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443 (and (fboundp 'make-face)
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444 (make-face 'custom-face-empty))
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445
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446 ;;;###autoload
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447 (defun custom-set-faces (&rest args)
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448 "Initialize faces according to user preferences.
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449 The arguments should be a list where each entry has the form:
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450
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451 (FACE SPEC [NOW])
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452
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453 SPEC will be stored as the saved value for FACE. If NOW is present
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454 and non-nil, FACE will also be created according to SPEC.
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455
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456 See `defface' for the format of SPEC."
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457 (while args
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458 (let ((entry (car args)))
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459 (if (listp entry)
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460 (let ((face (nth 0 entry))
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461 (spec (nth 1 entry))
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462 (now (nth 2 entry)))
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463 (put face 'saved-face spec)
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464 (when now
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32
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465 (put face 'force-face t))
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466 (when (or now (custom-facep face))
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28
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467 (when (fboundp 'copy-face)
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468 (copy-face 'custom-face-empty face))
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469 (custom-face-display-set face spec))
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470 (setq args (cdr args)))
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471 ;; Old format, a plist of FACE SPEC pairs.
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472 (let ((face (nth 0 args))
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473 (spec (nth 1 args)))
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474 (put face 'saved-face spec))
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475 (setq args (cdr (cdr args)))))))
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476
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477 ;;; The End.
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478
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479 (provide 'cus-face)
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480
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481 ;; cus-face.el ends here
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