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|
;;; cus-face.el --- customization support for faces
;;
;; Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
;;
;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
;; Keywords: help, faces
;; Version: Emacs
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;;
;; See `custom.el'.
;;; Code:
(defalias 'custom-facep 'facep)
;;; Declaring a face.
;;;###autoload
(defun custom-declare-face (face spec doc &rest args)
"Like `defface', but FACE is evaluated as a normal argument."
(unless (get face 'face-defface-spec)
(put face 'face-defface-spec spec)
(when (fboundp 'facep)
(unless (facep face)
;; If the user has already created the face, respect that.
(let ((value (or (get face 'saved-face) spec))
(frames (frame-list))
frame)
;; Create global face.
(make-empty-face face)
;; Create frame local faces
(while frames
(setq frame (car frames)
frames (cdr frames))
(face-spec-set face value frame)))
;; When making a face after frames already exist
(if (memq window-system '(x w32))
(make-face-x-resource-internal face))))
(when (and doc (null (face-documentation face)))
(set-face-documentation face (purecopy doc)))
(custom-handle-all-keywords face args 'custom-face)
(run-hooks 'custom-define-hook))
face)
;;; Face attributes.
;; Below, nil is used in widget specifications for `unspecified' face
;; attributes and `off' is used instead of nil attribute values. The
;; reason for this is that nil corresponds to the result you get when
;; looking up an attribute in a defface spec that isn't contained in
;; the spec.
(defconst custom-face-attributes
'((:family
(choice :tag "Font family"
:help-echo "Font family or fontset alias name."
(const :tag "*" nil)
(string :tag "Family")))
(:width
(choice :tag "Width"
:help-echo "Font width."
(const :tag "*" nil)
(const :tag "compressed" condensed)
(const :tag "condensed" condensed)
(const :tag "demiexpanded" semi-expanded)
(const :tag "expanded" expanded)
(const :tag "extracondensed" extra-condensed)
(const :tag "extraexpanded" extra-expanded)
(const :tag "medium" normal)
(const :tag "narrow" condensed)
(const :tag "normal" normal)
(const :tag "regular" normal)
(const :tag "semicondensed" semi-condensed)
(const :tag "semiexpanded" semi-expanded)
(const :tag "ultracondensed" ultra-condensed)
(const :tag "ultraexpanded" ultra-expanded)
(const :tag "wide" extra-expanded)))
(:height
(choice :tag "Height"
:help-echo "Face's font height."
(const :tag "*" nil)
(integer :tag "Height in 1/10 pt")
(number :tag "Scale" 1.0)))
(:weight
(choice :tag "Weight"
:help-echo "Font weight."
(const :tag "*" nil)
(const :tag "black" ultra_bold)
(const :tag "bold" bold)
(const :tag "book" semi-light)
(const :tag "demibold" semi-bold)
(const :tag "extralight" extra-light)
(const :tag "extrabold" extra-bold)
(const :tag "heavy" extra-bold)
(const :tag "light" light)
(const :tag "medium" normal)
(const :tag "normal" normal)
(const :tag "regular" normal)
(const :tag "semibold" semi-bold)
(const :tag "semilight" semi-light)
(const :tag "ultralight" ultra-light)
(const :tag "ultrabold" ultra-bold)))
(:slant
(choice :tag "Slant"
:help-echo "Font slant."
(const :tag "*" nil)
(const :tag "italic" italic)
(const :tag "oblique" oblique)
(const :tag "normal" normal)))
(:underline
(choice :tag "Underline"
:help-echo "Control text underlining."
(const :tag "*" nil)
(const :tag "On" t)
(const :tag "Off" off)
(color :tag "Colored")))
(:overline
(choice :tag "Overline"
:help-echo "Control text overlining."
(const :tag "*" nil)
(const :tag "On" t)
(const :tag "Off" off)
(color :tag "Colored")))
(:strike-through
(choice :tag "Strike-through"
:help-echo "Control text strike-through."
(const :tag "*" nil)
(const :tag "On" t)
(const :tag "Off" off)
(color :tag "Colored")))
(:box
;; Fixme: this can probably be done better.
(choice :tag "Box around text"
:help-echo "Control box around text."
(const :tag "*" nil)
(const :tag "Off" off)
(list :tag "Box"
:value (:line-width 2 :color "grey75" :style released-button)
(const :format "" :value :line-width)
(integer :tag "Width")
(const :format "" :value :color)
(choice :tag "Color" (const :tag "*" nil) color)
(const :format "" :value :style)
(choice :tag "Style"
(const :tag "Raised" released-button)
(const :tag "Sunken" pressed-button)
(const :tag "None" nil))))
;; filter to make value suitable for customize
(lambda (real-value)
(if (null real-value)
'off
(let ((lwidth
(or (and (consp real-value) (plist-get real-value :line-width))
(and (integerp real-value) real-value)
1))
(color
(or (and (consp real-value) (plist-get real-value :color))
(and (stringp real-value) real-value)
nil))
(style
(and (consp real-value) (plist-get real-value :style))))
(list :line-width lwidth :color color :style style))))
;; filter to make customized-value suitable for storing
(lambda (cus-value)
(cond ((null cus-value)
'unspecified)
((eq cus-value 'off)
nil)
(t
(let ((lwidth (plist-get cus-value :line-width))
(color (plist-get cus-value :color))
(style (plist-get cus-value :style)))
(cond ((and (null color) (null style))
lwidth)
((and (null lwidth) (null style))
;; actually can't happen, because LWIDTH is always an int
color)
(t
;; Keep as a plist, but remove null entries
(nconc (and lwidth `(:line-width ,lwidth))
(and color `(:color ,color))
(and style `(:style ,style))))))))))
(:inverse-video
(choice :tag "Inverse-video"
:help-echo "Control whether text should be in inverse-video."
(const :tag "*" nil)
(const :tag "On" t)
(const :tag "Off" off)))
(:foreground
(choice :tag "Foreground"
:help-echo "Set foreground color."
(const :tag "*" nil)
(color :tag "Color")))
(:background
(choice :tag "Background"
:help-echo "Set background color."
(const :tag "*" nil)
(color :tag "Color")))
(:stipple
(choice :tag "Stipple"
:help-echo "Background bit-mask"
(const :tag "*" nil)
(const :tag "None" off)
(file :tag "File"
:help-echo "Name of bitmap file."
:must-match t)))
(:inherit
(repeat :tag "Inherit"
:help-echo "List of faces to inherit attributes from."
(face :Tag "Face" default))
;; filter to make value suitable for customize
(lambda (real-value)
(cond ((or (null real-value) (eq real-value 'unspecified))
nil)
((symbolp real-value)
(list real-value))
(t
real-value)))
;; filter to make customized-value suitable for storing
(lambda (cus-value)
(if (and (consp cus-value) (null (cdr cus-value)))
(car cus-value)
cus-value))))
"Alist of face attributes.
The elements are of the form (KEY TYPE PRE-FILTER POST-FILTER),
where KEY is the name of the attribute, TYPE is a widget type for
editing the attribute, PRE-FILTER is a function to make the attribute's
value suitable for the customization widget, and POST-FILTER is a
function to make the customized value suitable for storing. PRE-FILTER
and POST-FILTER are optional.
The PRE-FILTER should take a single argument, the attribute value as
stored, and should return a value for customization (using the
customization type TYPE).
The POST-FILTER should also take a single argument, the value after
being customized, and should return a value suitable for setting the
given face attribute.")
(defun custom-face-attributes-get (face frame)
"For FACE on FRAME, return an alternating list describing its attributes.
The list has the form (KEYWORD VALUE KEYWORD VALUE...).
Each keyword should be listed in `custom-face-attributes'.
If FRAME is nil, use the global defaults for FACE."
(let ((attrs custom-face-attributes)
plist)
(while attrs
(let* ((attribute (car (car attrs)))
(value (face-attribute face attribute frame)))
(setq attrs (cdr attrs))
(unless (or (eq value 'unspecified)
(and (null value) (memq attribute '(:inherit))))
(setq plist (cons attribute (cons value plist))))))
plist))
;;; Initializing.
;;;###autoload
(defun custom-set-faces (&rest args)
"Initialize faces according to user preferences.
The arguments should be a list where each entry has the form:
(FACE SPEC [NOW [COMMENT]])
SPEC is stored as the saved value for FACE.
If NOW is present and non-nil, FACE is created now, according to SPEC.
COMMENT is a string comment about FACE.
See `defface' for the format of SPEC."
(while args
(let ((entry (car args)))
(if (listp entry)
(let ((face (nth 0 entry))
(spec (nth 1 entry))
(now (nth 2 entry))
(comment (nth 3 entry)))
(put face 'saved-face spec)
(put face 'saved-face-comment comment)
(when now
(put face 'force-face t))
(when (or now (facep face))
(put face 'face-comment comment)
(make-empty-face face)
(face-spec-set face spec))
(setq args (cdr args)))
;; Old format, a plist of FACE SPEC pairs.
(let ((face (nth 0 args))
(spec (nth 1 args)))
(put face 'saved-face spec))
(setq args (cdr (cdr args)))))))
;;; The End.
(provide 'cus-face)
;;; cus-face.el ends here
|
