mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-28 07:45:00 +00:00
136 lines
4.4 KiB
EmacsLisp
136 lines
4.4 KiB
EmacsLisp
;;; scroll-all.el -- scroll all buffers together minor mode
|
|
|
|
;; Copyright (C) 1997 Free Software Foundation, Inc.
|
|
|
|
;; Author: Gary D. Foster <Gary.Foster@corp.sun.com>
|
|
;; Keywords: scroll crisp brief lock
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs 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.
|
|
|
|
;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to the
|
|
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
;; Boston, MA 02111-1307, USA.
|
|
|
|
;; Commentary
|
|
;; This mode allows multiple buffers to be 'locked' so that scrolling
|
|
;; up or down lines in any buffer causes all the buffers to mirror
|
|
;; the scrolling. It hooks into the post-command-hook to check for
|
|
;; potential scrolling commands and if we're locked, mirrors them in all
|
|
;; windows. This allows us to grab line-at-a-time scrolling as well as
|
|
;; screen-at-a-time scrolling, and doesn't remap any of the keyboard
|
|
;; commands to do it.
|
|
|
|
;; You can enable and disable this mode with the 'scroll-all-mode' command.
|
|
|
|
;; Suggestions/ideas from:
|
|
;; Rick Macdonald <rickm@vsl.com>
|
|
;; Anders Lindgren <andersl@csd.uu.se>
|
|
|
|
(defvar running-xemacs (string-match "XEmacs\\|Lucid" emacs-version))
|
|
|
|
;;;###autoload
|
|
(defcustom scroll-all-mode nil
|
|
"Control/track scroll locking.
|
|
|
|
Setting this variable directly does not take effect;
|
|
use either M-x customize or the function `scroll-all-mode'."
|
|
:set (lambda (symbol value) (scroll-all-mode (if value 1 0)))
|
|
:initialize 'custom-initialize-default
|
|
:require 'scroll-all
|
|
:type 'boolean
|
|
:group 'windows)
|
|
|
|
(if running-xemacs
|
|
(add-minor-mode 'scroll-all-mode " *SL*")
|
|
(or (assq 'scroll-all-mode-mode minor-mode-alist)
|
|
(setq minor-mode-alist
|
|
(cons '(scroll-all-mode-mode " *SL*") minor-mode-alist))))
|
|
|
|
(defun scroll-all-scroll-down-all (arg)
|
|
"Scroll down all visible windows."
|
|
(interactive "P")
|
|
(let ((num-windows (count-windows))
|
|
(count 1))
|
|
(if (> num-windows 1)
|
|
( progn (other-window 1)
|
|
(while (< count num-windows)
|
|
(if (not (eq (point) (point-max)))
|
|
(progn (call-interactively 'next-line)))
|
|
(other-window 1)
|
|
(setq count (1+ count)))))))
|
|
|
|
(defun scroll-all-scroll-up-all (arg)
|
|
"Scroll up all visible windows."
|
|
(interactive "P")
|
|
(let ((num-windows (count-windows))
|
|
(count 1))
|
|
(if (> num-windows 1)
|
|
( progn (other-window 1)
|
|
(while (< count num-windows)
|
|
(if (not (eq (point) (point-min)))
|
|
(progn (call-interactively 'previous-line)))
|
|
(other-window 1)
|
|
(setq count (1+ count)))))))
|
|
|
|
(defun scroll-all-page-down-all (arg)
|
|
"Page down in all visible windows."
|
|
(interactive "P")
|
|
(let ((num-windows (count-windows))
|
|
(count 1))
|
|
(if (> num-windows 1)
|
|
(progn (other-window 1)
|
|
(while (< count num-windows)
|
|
(call-interactively 'fkey-scroll-up)
|
|
(other-window 1)
|
|
(setq count (1+ count)))))))
|
|
|
|
(defun scroll-all-page-up-all (arg)
|
|
"Page up in all visible windows."
|
|
(interactive "P")
|
|
(let ((num-windows (count-windows))
|
|
(count 1))
|
|
(if (> num-windows 1)
|
|
(progn (other-window 1)
|
|
(while (< count num-windows)
|
|
(call-interactively 'fkey-scroll-down)
|
|
(other-window 1)
|
|
(setq count (1+ count)))))))
|
|
|
|
|
|
(defun scroll-all-check-to-scroll ()
|
|
"Check `last-command' to see if a scroll was done."
|
|
(if (eq this-command 'next-line)
|
|
(call-interactively 'scroll-all-scroll-down-all))
|
|
(if (eq this-command 'previous-line)
|
|
(call-interactively 'scroll-all-scroll-up-all))
|
|
(if (eq this-command 'fkey-scroll-up)
|
|
(call-interactively 'scroll-all-page-down-all))
|
|
(if (eq this-command 'fkey-scroll-down)
|
|
(call-interactively 'scroll-all-page-up-all)))
|
|
|
|
;;;###autoload
|
|
(defun scroll-all-mode (arg)
|
|
"Toggle Scroll-All minor mode."
|
|
(interactive "P")
|
|
(setq scroll-all-mode (not scroll-all-mode))
|
|
(cond
|
|
((eq scroll-all-mode 't)
|
|
(add-hook 'post-command-hook 'scroll-all-check-to-scroll))
|
|
((eq scroll-all-mode 'nil)
|
|
(remove-hook 'post-command-hook 'scroll-all-check-to-scroll))))
|
|
|
|
(provide 'scroll-all)
|
|
|
|
;; scroll-all.el ends here
|