;;; fringe.el --- fringe setup and control -*- coding: utf-8 -*-
-;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;; 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2002-2011 Free Software Foundation, Inc.
;; Author: Simon Josefsson <simon@josefsson.org>
;; Maintainer: FSF
;; Keywords: frames
+;; Package: emacs
;; This file is part of GNU Emacs.
"Non-nil means `set-fringe-mode' should really do something.
This is nil while loading `fringe.el', and t afterward.")
-(defun set-fringe-mode-1 (ignore value)
+(defun set-fringe-mode-1 (_ignore value)
"Call `set-fringe-mode' with VALUE.
See `fringe-mode' for valid values and their effect.
This is usually invoked when setting `fringe-mode' via customize."
;; Otherwise impose the user-specified value of fringe-mode.
(custom-initialize-reset symbol value))))
+(defconst fringe-styles
+ '(("default" . nil)
+ ("no-fringes" . 0)
+ ("right-only" . (0 . nil))
+ ("left-only" . (nil . 0))
+ ("half-width" . (4 . 4))
+ ("minimal" . (1 . 1))))
+
(defcustom fringe-mode nil
"Specify appearance of fringes on all frames.
This variable can be nil (the default) meaning the fringes should have
a cons cell where car indicates width of left fringe and cdr indicates
width of right fringe (where again 0 can be used to indicate no
fringe).
+Note that the actual width may be rounded up to ensure that the sum of
+the width of the left and right fringes is a multiple of the frame's
+character width. However, a fringe width of 0 is never rounded.
To set this variable in a Lisp program, use `set-fringe-mode' to make
it take real effect.
Setting the variable with a customization buffer also takes effect.
If you only want to modify the appearance of the fringe in one frame,
you can use the interactive function `set-fringe-style'."
- :type '(choice (const :tag "Default width" nil)
- (const :tag "No fringes" 0)
- (const :tag "Only right" (0 . nil))
- (const :tag "Only left" (nil . 0))
- (const :tag "Half width" (5 . 5))
- (const :tag "Minimal" (1 . 1))
- (integer :tag "Specific width")
- (cons :tag "Different left/right sizes"
- (integer :tag "Left width")
- (integer :tag "Right width")))
+ :type `(choice
+ ,@ (mapcar (lambda (style)
+ (let ((name
+ (replace-regexp-in-string "-" " " (car style))))
+ `(const :tag
+ ,(concat (capitalize (substring name 0 1))
+ (substring name 1))
+ ,(cdr style))))
+ fringe-styles)
+ (integer :tag "Specific width")
+ (cons :tag "Different left/right sizes"
+ (integer :tag "Left width")
+ (integer :tag "Right width")))
:group 'fringe
:require 'fringe
:initialize 'fringe-mode-initialize
`default-frame-alist' is used when user enters the empty string.
Otherwise the negation of the fringe value in the currently selected
frame parameter is used."
- (let ((mode (intern (completing-read
- (concat
- "Select fringe mode for "
- (if all-frames "all frames" "selected frame")
- " (type ? for list): ")
- '(("none") ("default") ("left-only")
- ("right-only") ("half") ("minimal"))
- nil t))))
- (cond ((eq mode 'none) 0)
- ((eq mode 'default) nil)
- ((eq mode 'left-only) '(nil . 0))
- ((eq mode 'right-only) '(0 . nil))
- ((eq mode 'half) '(5 . 5))
- ((eq mode 'minimal) '(1 . 1))
- ((eq mode (intern ""))
- (if (eq 0 (cdr (assq 'left-fringe
- (if all-frames
- default-frame-alist
- (frame-parameters (selected-frame))))))
- nil
- 0)))))
+ (let* ((mode (completing-read
+ (concat
+ "Select fringe mode for "
+ (if all-frames "all frames" "selected frame")
+ ": ")
+ fringe-styles nil t))
+ (style (assoc (downcase mode) fringe-styles)))
+ (if style (cdr style)
+ (if (eq 0 (cdr (assq 'left-fringe
+ (if all-frames
+ default-frame-alist
+ (frame-parameters (selected-frame))))))
+ nil
+ 0))))
(defun fringe-mode (&optional mode)
"Set the default appearance of fringes on all frames.
(provide 'fringe)
-;; arch-tag: 6611ef60-0869-47ed-8b93-587ee7d3ff5d
;;; fringe.el ends here