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;;; tide-lv.el --- Other echo area
;; Copyright (C) 2015 Free Software Foundation, Inc.
;; Author: Oleh Krehel
;; 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; This package provides `tide-lv-message' intended to be used in place of
;; `message' when semi-permanent hints are needed, in order to not
;; interfere with Echo "Я тихо-тихо пiдглядаю,
;; І тiшуся собi, як бачу то,
;; Шо страшить i не пiдпускає,
;; А iншi п’ють тебе, як воду пiсок." L.V.
;;
;;
;; Modified version of lv.el from github.com/abo-abo/hydra
;;; Code:
(defvar tide-lv-buffer-name " *tide-LV*")
(defvar tide-lv-wnd nil
"Holds the current LV window.")
(defun tide-lv-window ()
"Ensure that LV window is live and return it."
(if (window-live-p tide-lv-wnd)
tide-lv-wnd
(let ((ori (selected-window))
buf)
(prog1 (setq tide-lv-wnd
(select-window
(let ((ignore-window-parameters t))
(split-window
(frame-root-window) -1 'below))))
(if (setq buf (get-buffer tide-lv-buffer-name))
(switch-to-buffer buf)
(switch-to-buffer tide-lv-buffer-name)
(set-window-hscroll tide-lv-wnd 0)
(setq window-size-fixed t)
(setq mode-line-format nil)
(setq cursor-type nil)
(set-window-dedicated-p tide-lv-wnd t)
(set-window-parameter tide-lv-wnd 'no-other-window t))
(select-window ori)))))
(defun tide-lv-message (format-string &rest args)
"Set LV window contents to (`format' FORMAT-STRING ARGS)."
(let* ((str (apply #'format format-string args))
(n-lines (cl-count ?\n str))
deactivate-mark
golden-ratio-mode)
(with-selected-window (tide-lv-window)
(unless (string= (buffer-string) str)
(delete-region (point-min) (point-max))
(insert str)
(set (make-local-variable 'window-min-height) n-lines)
(setq truncate-lines (> n-lines 1))
(let ((window-resize-pixelwise t)
(window-size-fixed nil))
(fit-window-to-buffer nil nil 1)))
(goto-char (point-min)))))
(defun tide-lv-delete-window ()
"Delete LV window and kill its buffer."
(when (window-live-p tide-lv-wnd)
(let ((buf (window-buffer tide-lv-wnd)))
(delete-window tide-lv-wnd)
(kill-buffer buf))))
(provide 'tide-lv)
;;; tide-lv.el ends here
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