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;;; evil-collection-scroll-lock.el --- Bindings for `scroll-lock' -*- lexical-binding: t -*-
;; Copyright (C) 2021 James Nguyen
;; Author: James Nguyen <james@jojojames.com>
;; Maintainer: James Nguyen <james@jojojames.com>
;; URL: https://github.com/emacs-evil/evil-collection
;; Version: 0.0.1
;; Package-Requires: ((emacs "26.3"))
;; Keywords: evil, elisp, lisp
;; 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 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Bindings for `scroll-lock'.
;;; Code:
(require 'scroll-lock)
(require 'evil-collection)
(declare-function scroll-lock-next-line "scroll-lock")
(declare-function scroll-lock-previous-line "scroll-lock")
(declare-function scroll-lock-forward-paragraph "scroll-lock")
(declare-function scroll-lock-backward-paragraph "scroll-lock")
(defconst evil-collection-scroll-lock-maps '(scroll-lock-mode-map))
(evil-define-motion evil-collection-scroll-lock-next-line (count)
"Scroll down COUNT lines keeping point fixed."
:type line
(let (line-move-visual)
(scroll-lock-next-line (or count 1))))
(evil-define-motion evil-collection-scroll-lock-previous-line (count)
"Scroll up COUNT lines keeping point fixed."
:type line
(let (line-move-visual)
(scroll-lock-previous-line (or count 1))))
(evil-define-motion evil-collection-scroll-lock-forward-paragraph (count)
"Scroll down COUNT paragraphs keeping point fixed."
:jump t
:type exclusive
(evil-signal-at-bob-or-eob count)
(scroll-lock-forward-paragraph count)
(unless (eobp) (forward-line)))
(evil-define-motion evil-collection-scroll-lock-backward-paragraph (count)
"Scroll up COUNT paragraphs keeping point fixed."
:jump t
:type exclusive
(evil-signal-at-bob-or-eob (- (or count 1)))
(unless (eobp) (forward-line))
(scroll-lock-backward-paragraph count)
(unless (bobp) (forward-line -1)))
;;;###autoload
(defun evil-collection-scroll-lock-setup ()
"Set up `evil' bindings for `scroll-lock'."
(evil-collection-define-key 'normal 'scroll-lock-mode-map
[remap evil-next-line] 'evil-collection-scroll-lock-next-line
[remap evil-previous-line] 'evil-collection-scroll-lock-previous-line
[remap evil-forward-paragraph]
'evil-collection-scroll-lock-forward-paragraph
[remap evil-backward-paragraph]
'evil-collection-scroll-lock-backward-paragraph)
(evil-add-command-properties
#'evil-collection-scroll-lock-forward-paragraph :jump t)
(evil-add-command-properties
#'evil-collection-scroll-lock-backward-paragraph :jump t)
(add-hook 'scroll-lock-mode-hook 'evil-normalize-keymaps))
(provide 'evil-collection-scroll-lock)
;;; evil-collection-scroll-lock.el ends here
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