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