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spacemacs/core/spacemacs-mode.el
2014-09-23 20:48:11 -04:00

77 lines
2.8 KiB
EmacsLisp

(setq message-log-max 16384)
(defconst emacs-start-time (current-time))
(define-derived-mode spacemacs-mode special-mode "spacemacs-mode"
"Spacemacs major mode for startup screen."
:syntax-table nil
:abbrev-table nil
(setq truncate-lines t)
(setq cursor-type nil))
(defun spacemacs-load-dotfile ()
"Load ~/.spacemacs. If it is not found then copy .spacemacs.template to
~/.spacemacs"
(let ((dotfile (concat user-home-directory ".spacemacs")))
(unless (file-exists-p dotfile)
(copy-file (concat user-emacs-directory ".spacemacs.template") dotfile))
(load dotfile)))
(defvar spacemacs-title-length 70)
(defvar loading-counter 0)
(defvar loading-text "Loading")
(defvar loading-done-text "Ready!")
(defvar loading-dots-chunk-count 3)
(defvar loading-dots-count
(- spacemacs-title-length (length loading-text) (length loading-done-text)))
(defvar loading-dots-chunk-size (/ loading-dots-count loading-dots-chunk-count))
(defvar loading-dots-chunk-threshold 0)
(defun spacemacs-buffer ()
"Create and initialize the spacemacs startup buffer."
(interactive)
(switch-to-buffer (get-buffer-create "*spacemacs*"))
(spacemacs-mode)
(let ((buffer-read-only nil))
(insert-file-contents (concat spacemacs-core-directory "banner.txt"))))
(defun append-to-spacemacs-buf (msg)
"Append MSG to spacemacs buffer."
(with-current-buffer (get-buffer-create "*spacemacs*")
(goto-char (point-max))
(let ((buffer-read-only nil))
(insert (format "%s" msg)))))
(defun replace-last-line-of-spacemacs-buf (msg)
"Replace the last line of the spacemacs buffer with MSG."
(with-current-buffer (get-buffer-create "*spacemacs*")
(goto-char (point-max))
(let ((buffer-read-only nil))
(delete-region (line-beginning-position) (point-max))
(insert msg))))
(defun loading-animation ()
"Display LOADING-TITLE with trailing dots of max length
SPACEMACS-TITLE-LENGTH. New loading title is displayed by chunk
of size LOADING-DOTS-CHUNK-THRESHOLD."
(setq loading-counter (1+ loading-counter))
(if (>= loading-counter loading-dots-chunk-threshold)
(progn
(setq loading-counter 0)
(let ((i 0))
(while (< i loading-dots-chunk-size)
(setq loading-text (concat loading-text "."))
(setq i (1+ i))))
(replace-last-line-of-spacemacs-buf loading-text)
(redisplay))))
;; Ready message
(add-hook 'after-init-hook
(lambda ()
(append-to-spacemacs-buf (format "%s\n" loading-done-text))
;; from jwiegley
;; https://github.com/jwiegley/dot-emacs/blob/master/init.el
(let ((elapsed (float-time
(time-subtract (current-time) emacs-start-time))))
(append-to-spacemacs-buf
(format "[%.3fs]\n" elapsed)))))