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;;; bar-cursor.el --- package used to switch block cursor to a bar
;; This file is not part of Emacs
;; Copyright (C) 2001 by Joseph L. Casadonte Jr.
;; Copyright (C) 2013-2018 by Andrew Johnson
;; Author: Joe Casadonte (emacs@northbound-train.com)
;; Maintainer: Andrew Johnson (andrew@andrewjamesjohnson.com)
;; Created: July 1, 2001
;; Keywords: files
;; URL: https://github.com/ajsquared/bar-cursor
;; Version: 2.0
;; COPYRIGHT NOTICE
;; 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 2, 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:
;;
;; Simple package to convert the block cursor into a bar cursor. In
;; overwrite mode, the bar cursor changes back into a block cursor.
;; This is a global minor mode.
;;; Installation:
;;
;; 1. Place bar-cursor.el somewhere on your Emacs load path.
;; 2. Add (require 'bar-cursor) to your .emacs
;; 3. Add (bar-cursor-mode 1) to your .emacs
;;
;; bar-cursor.el is also available in Melpa. See
;; https://github.com/melpa/melpa#usage for information on using
;; Melpa. Then you can run M-x package-install bar-cursor to install
;; it.
;;; Usage:
;;
;; M-x `bar-cursor-mode'
;; Toggles bar-cursor-mode on & off. Optional arg turns
;; bar-cursor-mode on iff arg is a positive integer.
;;; Credits:
;;
;; The basis for this code comes from Steve Kemp by way of the
;; NTEmacs mailing list.
;;; Comments:
;;
;; Any comments, suggestions, bug reports or upgrade requests are
;; welcome. Please create issues or send pull requests via Github at
;; https://github.com/ajsquared/bar-cursor.
;;; Change Log:
;;
;; See https://github.com/ajsquared/bar-cursor/commits/master
;;; Code:
;;; **************************************************************************
;;; ***** mode definition
;;; **************************************************************************
;;;###autoload
(define-minor-mode bar-cursor-mode
"Toggle use of 'bar-cursor-mode'.
This global minor mode changes cursor to a bar cursor in insert
mode, and a block cursor in overwrite mode."
:lighter " bar"
:init-value nil
:keymap nil
:global t
(add-hook 'overwrite-mode-hook 'bar-cursor-set-cursor)
(add-hook 'after-make-frame-functions 'bar-cursor-set-cursor)
(bar-cursor-set-cursor))
;;; **************************************************************************
;;; ***** utility functions
;;; **************************************************************************
(defun bar-cursor-set-cursor-type (cursor &optional frame)
"Set the ‘cursor-type’ for the named frame.
CURSOR is the name of the cursor to use (bar or block -- any others?).
FRAME is optional frame to set the cursor for; current frame is used
if not passed in."
(interactive)
(unless frame
(setq frame (selected-frame)))
;; Do the modification.
(modify-frame-parameters frame
(list (cons 'cursor-type cursor))))
(defun bar-cursor-set-cursor (&optional frame)
"Set the ‘cursor-type’ according to the insertion mode.
FRAME is optional frame to set the cursor for; current frame is used
if not passed in."
(if (and bar-cursor-mode (not overwrite-mode))
(bar-cursor-set-cursor-type 'bar frame)
(bar-cursor-set-cursor-type 'block frame)))
(provide 'bar-cursor)
;;; bar-cursor.el ends here
|
