126 lines
4.6 KiB
EmacsLisp
126 lines
4.6 KiB
EmacsLisp
;;; rectangular-region-mode.el
|
|
|
|
;; Copyright (C) 2012-2016 Magnar Sveen
|
|
|
|
;; Author: Magnar Sveen <magnars@gmail.com>
|
|
;; Keywords: editing cursors
|
|
|
|
;; 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:
|
|
|
|
;; (global-set-key (kbd "H-SPC") 'set-rectangular-region-anchor)
|
|
|
|
;; Think of this one as `set-mark` except you're marking a rectangular region. It is
|
|
;; an exceedingly quick way of adding multiple cursors to multiple lines.
|
|
|
|
;;; Code:
|
|
|
|
(require 'multiple-cursors-core)
|
|
|
|
(defvar rrm/anchor (make-marker)
|
|
"The position in the buffer that anchors the rectangular region.")
|
|
|
|
(defvar rectangular-region-mode-map (make-sparse-keymap)
|
|
"Keymap for rectangular region is mainly for rebinding C-g")
|
|
|
|
(define-key rectangular-region-mode-map (kbd "C-g") 'rrm/keyboard-quit)
|
|
(define-key rectangular-region-mode-map (kbd "<return>") 'rrm/switch-to-multiple-cursors)
|
|
|
|
(defvar rectangular-region-mode nil)
|
|
|
|
(defun rrm/keyboard-quit ()
|
|
"Exit rectangular-region-mode."
|
|
(interactive)
|
|
(rectangular-region-mode 0)
|
|
(rrm/remove-rectangular-region-overlays)
|
|
(deactivate-mark))
|
|
|
|
;; Bind this to a key (for instance H-SPC) to start rectangular-region-mode
|
|
;;;###autoload
|
|
(defun set-rectangular-region-anchor ()
|
|
"Anchors the rectangular region at point.
|
|
|
|
Think of this one as `set-mark' except you're marking a rectangular region. It is
|
|
an exceedingly quick way of adding multiple cursors to multiple lines."
|
|
(interactive)
|
|
(set-marker rrm/anchor (point))
|
|
(push-mark (point))
|
|
(rectangular-region-mode 1))
|
|
|
|
(defun rrm/remove-rectangular-region-overlays ()
|
|
"Remove all rectangular-region overlays."
|
|
(mc/remove-fake-cursors)
|
|
(mapc #'(lambda (o)
|
|
(when (eq (overlay-get o 'type) 'additional-region)
|
|
(delete-overlay o)))
|
|
(overlays-in (point-min) (point-max))))
|
|
|
|
(defun rrm/repaint ()
|
|
"Start from the anchor and draw a rectangle between it and point."
|
|
(if (not rectangular-region-mode)
|
|
(remove-hook 'post-command-hook 'rrm/repaint t)
|
|
;; else
|
|
(rrm/remove-rectangular-region-overlays)
|
|
(let* ((annoying-arrows-mode nil)
|
|
(point-column (current-column))
|
|
(point-line (mc/line-number-at-pos))
|
|
(anchor-column (save-excursion (goto-char rrm/anchor) (current-column)))
|
|
(anchor-line (save-excursion (goto-char rrm/anchor) (mc/line-number-at-pos)))
|
|
(left-column (if (< point-column anchor-column) point-column anchor-column))
|
|
(right-column (if (> point-column anchor-column) point-column anchor-column))
|
|
(navigation-step (if (< point-line anchor-line) 1 -1)))
|
|
(move-to-column anchor-column)
|
|
(set-mark (point))
|
|
(move-to-column point-column)
|
|
(mc/save-excursion
|
|
(while (not (= anchor-line (mc/line-number-at-pos)))
|
|
(forward-line navigation-step)
|
|
(move-to-column anchor-column)
|
|
(when (= anchor-column (current-column))
|
|
(set-mark (point))
|
|
(move-to-column point-column)
|
|
(when (= point-column (current-column))
|
|
(mc/create-fake-cursor-at-point))))))))
|
|
|
|
(defun rrm/switch-to-multiple-cursors (&rest forms)
|
|
"Switch from rectangular-region-mode to multiple-cursors-mode."
|
|
(interactive)
|
|
(rectangular-region-mode 0)
|
|
(multiple-cursors-mode 1))
|
|
|
|
(defadvice er/expand-region (before switch-from-rrm-to-mc activate)
|
|
(when rectangular-region-mode
|
|
(rrm/switch-to-multiple-cursors)))
|
|
|
|
(defadvice kill-ring-save (before switch-from-rrm-to-mc activate)
|
|
(when rectangular-region-mode
|
|
(rrm/switch-to-multiple-cursors)))
|
|
|
|
;;;###autoload
|
|
(define-minor-mode rectangular-region-mode
|
|
"A mode for creating a rectangular region to edit"
|
|
nil " rr" rectangular-region-mode-map
|
|
(if rectangular-region-mode
|
|
(progn
|
|
(add-hook 'after-change-functions 'rrm/switch-to-multiple-cursors t t)
|
|
(add-hook 'post-command-hook 'rrm/repaint t t))
|
|
(remove-hook 'after-change-functions 'rrm/switch-to-multiple-cursors t)
|
|
(remove-hook 'post-command-hook 'rrm/repaint t)
|
|
(set-marker rrm/anchor nil)))
|
|
|
|
(provide 'rectangular-region-mode)
|
|
|
|
;;; rectangular-region-mode.el ends here
|