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;;; org-bullets.el --- Show bullets in org-mode as UTF-8 characters
;; Version: 0.2.2
;; Author: sabof
;; URL: https://github.com/sabof/org-bullets
;; This file is NOT part of GNU Emacs.
;;
;; This program 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 3, or (at
;; your option) any later version.
;;
;; This program 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 this program ; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; The project is hosted at https://github.com/sabof/org-bullets
;; The latest version, and all the relevant information can be found there.
;;; Code:
(eval-when-compile (require 'cl))
(defgroup org-bullets nil
"Display bullets as UTF-8 characters."
:group 'org-appearance)
;; A nice collection of unicode bullets:
;; http://nadeausoftware.com/articles/2007/11/latency_friendly_customized_bullets_using_unicode_characters
(defcustom org-bullets-bullet-list
'(;;; Large
"◉"
"○"
"✸"
"✿"
;; ♥ ● ◇ ✚ ✜ ☯ ◆ ♠ ♣ ♦ ☢ ❀ ◆ ◖ ▶
;;; Small
;; ► • ★ ▸
)
"This variable contains the list of bullets.
It can contain any number of one-character strings.
For levels beyond the size of the list, the stars will be
displayed using the first items again."
:group 'org-bullets
:type '(repeat (string :tag "Bullet character")))
(defcustom org-bullets-face-name nil
"Allows to override `org-mode' bullets face.
If set to a name of a face, that face will be used.
Otherwise the face of the heading level will be used."
:group 'org-bullets
:type 'symbol)
(defvar org-bullets-bullet-map
'(keymap
(mouse-1 . org-cycle)
(mouse-2 . (lambda (e)
(interactive "e")
(mouse-set-point e)
(org-cycle))))
"Mouse events for bullets.
If this is undesirable, one can remove them with
\(setcdr org-bullets-bullet-map nil\)")
(defun org-bullets-level-char (level)
"Return a character corresponding to LEVEL."
(string-to-char
(nth (mod (1- level)
(length org-bullets-bullet-list))
org-bullets-bullet-list)))
;;;###autoload
(define-minor-mode org-bullets-mode
"UTF-8 bullets for `org-mode'."
nil nil nil
(let* ((keyword
`((,org-outline-regexp-bol
(0 (let (( level (- (match-end 0) (match-beginning 0) 1)))
(compose-region (- (match-end 0) 2)
(- (match-end 0) 1)
(org-bullets-level-char level))
(when (facep org-bullets-face-name)
(put-text-property (- (match-end 0) 2)
(- (match-end 0) 1)
'face
org-bullets-face-name))
(put-text-property (match-beginning 0)
(- (match-end 0) 2)
'face (list :foreground
(face-attribute
'default :background)))
(put-text-property (match-beginning 0)
(match-end 0)
'keymap
org-bullets-bullet-map)
nil))))))
(if org-bullets-mode
(progn (font-lock-add-keywords nil keyword)
(font-lock-fontify-buffer))
(save-excursion
(goto-char (point-min))
(font-lock-remove-keywords nil keyword)
(while (re-search-forward org-outline-regexp-bol nil t)
(decompose-region (match-beginning 0) (match-end 0)))
(font-lock-fontify-buffer)))))
(provide 'org-bullets)
;; Local Variables:
;; coding: utf-8-emacs
;; End:
;;; org-bullets.el ends here
|
