-;;; cus-face.el -- customization support for faces.
+;;; cus-face.el --- customization support for faces
;;
-;; Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc.
+;; Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
;;
;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
;; Keywords: help, faces
;;; 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"))
- (lambda (face value &optional frame)
- (set-face-attribute face frame :family (or value 'unspecified)))
- (lambda (face &optional frame)
- (let ((family (face-attribute face :family frame)))
- (if (eq family 'unspecified) nil family))))
+ (string :tag "Font Family"
+ :help-echo "Font family or fontset alias name."))
(:width
(choice :tag "Width"
:help-echo "Font width."
- (const :tag "*" nil)
+ :value normal ; default
(const :tag "compressed" condensed)
(const :tag "condensed" condensed)
(const :tag "demiexpanded" semi-expanded)
(const :tag "semiexpanded" semi-expanded)
(const :tag "ultracondensed" ultra-condensed)
(const :tag "ultraexpanded" ultra-expanded)
- (const :tag "wide" extra-expanded))
- (lambda (face value &optional frame)
- (set-face-attribute face frame :width (or value 'unspecified)))
- (lambda (face &optional frame)
- (let ((width (face-attribute face :width frame)))
- (if (eq width 'unspecified) nil width))))
+ (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"))
- (lambda (face value &optional frame)
- (set-face-attribute face frame :height (or value 'unspecified)))
- (lambda (face &optional frame)
- (let ((height (face-attribute face :height frame)))
- (if (eq height 'unspecified) nil height))))
-
+ :value 1.0 ; default
+ (integer :tag "Height in 1/10 pt")
+ (number :tag "Scale" 1.0)))
+
(:weight
(choice :tag "Weight"
:help-echo "Font weight."
- (const :tag "*" nil)
+ :value normal ; default
(const :tag "black" ultra_bold)
(const :tag "bold" bold)
(const :tag "book" semi-light)
(const :tag "semibold" semi-bold)
(const :tag "semilight" semi-light)
(const :tag "ultralight" ultra-light)
- (const :tag "ultrabold" ultra-bold))
- (lambda (face value &optional frame)
- (set-face-attribute face frame :weight (or value 'unspecified)))
- (lambda (face &optional frame)
- (let ((weight (face-attribute face :weight frame)))
- (if (eq weight 'unspecified) nil weight))))
+ (const :tag "ultrabold" ultra-bold)))
(:slant
(choice :tag "Slant"
:help-echo "Font slant."
- (const :tag "*" nil)
+ :value normal ; default
(const :tag "italic" italic)
(const :tag "oblique" oblique)
- (const :tag "normal" normal))
- (lambda (face value &optional frame)
- (set-face-attribute face frame :slant (or value 'unspecified)))
- (lambda (face &optional frame)
- (let ((slant (face-attribute face :slant frame)))
- (if (eq slant 'unspecified) nil slant))))
+ (const :tag "normal" normal)))
(:underline
(choice :tag "Underline"
:help-echo "Control text underlining."
- (const :tag "*" nil)
+ (const :tag "Off" nil)
(const :tag "On" t)
- (const :tag "Off" off)
- (color :tag "Colored"))
- (lambda (face value &optional frame)
- (cond ((eq value 'off) (setq value nil))
- ((null value) (setq value 'unspecified)))
- (set-face-attribute face frame :underline value))
- (lambda (face &optional frame)
- (let ((underline (face-attribute face :underline frame)))
- (cond ((eq underline 'unspecified) nil)
- ((null underline) 'off)))))
+ (color :tag "Colored")))
(:overline
(choice :tag "Overline"
:help-echo "Control text overlining."
- (const :tag "*" nil)
+ (const :tag "Off" nil)
(const :tag "On" t)
- (const :tag "Off" off)
- (color :tag "Colored"))
- (lambda (face value &optional frame)
- (cond ((eq value 'off) (setq value nil))
- ((null value) (setq value 'unspecified)))
- (set-face-attribute face frame :overline value))
- (lambda (face &optional frame)
- (let ((overline (face-attribute face :overline frame)))
- (cond ((eq overline 'unspecified) nil)
- ((null overline) 'off)))))
+ (color :tag "Colored")))
(:strike-through
(choice :tag "Strike-through"
:help-echo "Control text strike-through."
- (const :tag "*" nil)
+ (const :tag "Off" nil)
(const :tag "On" t)
- (const :tag "Off" off)
- (color :tag "Colored"))
- (lambda (face value &optional frame)
- (cond ((eq value 'off) (setq value nil))
- ((null value) (setq value 'unspecified)))
- (set-face-attribute face frame :strike-through value))
- (lambda (face &optional frame)
- (let ((value (face-attribute face :strike-through frame)))
- (cond ((eq value 'unspecified) (setq value nil))
- ((null value) (setq value 'off)))
- value)))
+ (color :tag "Colored")))
(:box
;; Fixme: this can probably be done better.
(choice :tag "Box around text"
:help-echo "Control box around text."
- (const :tag "*" t)
(const :tag "Off" nil)
(list :tag "Box"
- :value (:line-width 2 :color "grey75"
- :style released-button)
+ :value (:line-width 2 :color "grey75" :style released-button)
(const :format "" :value :line-width)
(integer :tag "Width")
(const :format "" :value :color)
(const :tag "Raised" released-button)
(const :tag "Sunken" pressed-button)
(const :tag "None" nil))))
- (lambda (face value &optional frame)
- (set-face-attribute face frame :box value))
- (lambda (face &optional frame)
- (let ((value (face-attribute face :box frame)))
- (if (consp value)
- (list :line-width (or (plist-get value :line-width) 1)
- :color (plist-get value :color)
- :style (plist-get value :style))
- value))))
+ ;; filter to make value suitable for customize
+ (lambda (real-value)
+ (and real-value
+ (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)
+ (and cus-value
+ (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))
- (lambda (face value &optional frame)
- (cond ((eq value 'off) (setq value nil))
- ((null value) (setq value 'unspecified)))
- (set-face-attribute face frame :inverse-video value))
- (lambda (face &optional frame)
- (let ((value (face-attribute face :inverse-video frame)))
- (cond ((eq value 'unspecified)
- nil)
- ((null value)'off)))))
+ (const :tag "Off" nil)
+ (const :tag "On" t)))
(:foreground
- (choice :tag "Foreground"
- :help-echo "Set foreground color."
- (const :tag "*" nil)
- (color :tag "Color"))
- (lambda (face value &optional frame)
- (set-face-attribute face frame :foreground (or value 'unspecified)))
- (lambda (face &optional frame)
- (let ((value (face-attribute face :foreground frame)))
- (if (eq value 'unspecified) nil value))))
+ (color :tag "Foreground"
+ :help-echo "Set foreground color."))
(:background
- (choice :tag "Background"
- :help-echo "Set background color."
- (const :tag "*" nil)
- (color :tag "Color"))
- (lambda (face value &optional frame)
- (set-face-attribute face frame :background (or value 'unspecified)))
- (lambda (face &optional frame)
- (let ((value (face-attribute face :background frame)))
- (if (eq value 'unspecified) nil value))))
+ (color :tag "Background"
+ :help-echo "Set background color."))
(:stipple
(choice :tag "Stipple"
- :help-echo "Name of background bitmap file."
- (const :tag "*" nil)
- (file :tag "File" :must-match t))
- (lambda (face value &optional frame)
- (set-face-attribute face frame :stipple (or value 'unspecified)))
- (lambda (face &optional frame)
- (let ((value (face-attribute face :stipple frame)))
- (if (eq value 'unspecified) nil value)))))
+ :help-echo "Background bit-mask"
+ (const :tag "None" nil)
+ (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 SET GET), where KEY is the name
-of the attribute, TYPE is a widget type for editing the attibute, SET
-is a function for setting the attribute value, and GET is a function
-for getiing the attribute value.
+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 SET function should take three arguments, the face to modify, the
-value of the attribute, and optionally the frame where the face should
-be changed.
+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 GET function should take two arguments, the face to examine, and
-optionally the frame where the face should be examined.")
+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)
(let* ((attribute (car (car attrs)))
(value (face-attribute face attribute frame)))
(setq attrs (cdr attrs))
- (unless (eq value 'unspecified)
+ (unless (or (eq value 'unspecified)
+ (and (null value) (memq attribute '(:inherit))))
(setq plist (cons attribute (cons value plist))))))
plist))