Refactor DOOM scratch buffer
This commit is contained in:
Henrik Lissner
parent
0903dfa0c8
commit
e7d0e9f9ec
5 changed files with 95 additions and 88 deletions
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@ -13,88 +13,105 @@
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(defvar doom-buffer-edited nil
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"If non-nil, the scratch buffer has been edited.")
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(define-derived-mode doom-mode fundamental-mode "DOOM"
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(define-derived-mode doom-mode fundamental-mode
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(concat "DOOM v" doom-version)
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"Major mode for special DOOM buffers.")
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;; Don't kill the scratch buffer
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(add-hook! 'kill-buffer-query-functions
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(not (eq doom-buffer (current-buffer))))
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(add-hook 'emacs-startup-hook 'doom-mode-init)
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(add-hook 'emacs-startup-hook 'doom--reload-scratch-buffer)
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;; Don't rename these buffers. That could cause problems.
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(after! uniquify
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(setq uniquify-ignore-buffers-re (regexp-quote doom-buffer-name)))
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(defun doom-mode-erase-on-insert ()
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(defun doom*scratch-split-hack (&rest _)
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"Removes the window margins before attempting a vertical-split on the scratch
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buffer. Without this, it would refuse to split, saying 'too small to split'."
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(when (eq (current-buffer) doom-buffer)
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(set-window-margins nil 0 0)))
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(advice-add 'split-window :before 'doom*scratch-split-hack)
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(defun doom|mode-erase-on-insert ()
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"Erase the buffer and prepare it to be used like a normal buffer."
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(erase-buffer)
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(setq doom-buffer-edited t)
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(remove-hook 'evil-insert-state-entry-hook 'doom-mode-erase-on-insert t))
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(set-window-margins (get-buffer-window doom-buffer) 0 0)
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(remove-hook 'evil-insert-state-entry-hook 'doom|mode-erase-on-insert t))
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(defun doom|update-scratch-buffer-hook (&rest _)
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(doom|update-scratch-buffer))
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(defun doom-reload-scratch-buffer (&optional dir)
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"Update the DOOM scratch buffer (or create it, if it doesn't exist)."
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(when (and (get-buffer-window-list doom-buffer nil t)
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(or (not doom-buffer-edited) dir)
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(not (minibuffer-window-active-p (minibuffer-window))))
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(doom--reload-scratch-buffer dir)))
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(defun doom-mode-init (&optional auto-detect-frame)
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(defun doom--reload-scratch-buffer (&optional dir)
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;; Rename the old scratch buffer, if it exists.
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(let ((old-scratch (get-buffer "*scratch*")))
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(when old-scratch
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(with-current-buffer old-scratch
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(rename-buffer doom-buffer-name)
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(setq doom-buffer old-scratch))))
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;; Ensure the doom buffer is alive!
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(unless (buffer-live-p doom-buffer)
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(setq doom-buffer nil))
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(unless doom-buffer
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(setq doom-buffer (get-buffer-create doom-buffer-name)))
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;; Fill it with the splash screen content
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(with-current-buffer doom-buffer
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(doom-mode)
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(add-hook 'evil-insert-state-entry-hook 'doom-mode-erase-on-insert nil t)
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(add-hook 'after-change-major-mode-hook 'doom-mode-erase-on-insert nil t)
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(erase-buffer)
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(add-hook 'evil-insert-state-entry-hook 'doom|mode-erase-on-insert nil t)
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(add-hook 'after-change-major-mode-hook 'doom|mode-erase-on-insert nil t)
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(setq doom-buffer-edited nil)
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(insert
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(let* ((auto-detect-frame (or auto-detect-frame (not window-system)))
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(width (max 3 (- (if auto-detect-frame
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(window-width)
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(cdr (assq 'width default-frame-alist))) 3)))
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(height (if auto-detect-frame
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(window-height)
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(cdr (assq 'height default-frame-alist))))
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(lead (make-string (truncate (max 0 (/ (- width 78) 2))) ? )))
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(concat
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(propertize
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(concat
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(make-string (max 5 (- (truncate (/ height 2)) 12)) ?\n)
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lead "================= =============== =============== ======== ========\n"
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lead "\\\\ . . . . . . .\\\\ //. . . . . . .\\\\ //. . . . . . .\\\\ \\\\. . .\\\\// . . //\n"
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lead "||. . ._____. . .|| ||. . ._____. . .|| ||. . ._____. . .|| || . . .\\/ . . .||\n"
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lead "|| . .|| ||. . || || . .|| ||. . || || . .|| ||. . || ||. . . . . . . ||\n"
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lead "||. . || || . .|| ||. . || || . .|| ||. . || || . .|| || . | . . . . .||\n"
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lead "|| . .|| ||. _-|| ||-_ .|| ||. . || || . .|| ||. _-|| ||-_.|\\ . . . . ||\n"
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lead "||. . || ||-' || || `-|| || . .|| ||. . || ||-' || || `|\\_ . .|. .||\n"
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lead "|| . _|| || || || || ||_ . || || . _|| || || || |\\ `-_/| . ||\n"
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lead "||_-' || .|/ || || \\|. || `-_|| ||_-' || .|/ || || | \\ / |-_.||\n"
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lead "|| ||_-' || || `-_|| || || ||_-' || || | \\ / | `||\n"
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lead "|| `' || || `' || || `' || || | \\ / | ||\n"
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lead "|| .===' `===. .==='.`===. .===' /==. | \\/ | ||\n"
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lead "|| .==' \\_|-_ `===. .===' _|_ `===. .===' _-|/ `== \\/ | ||\n"
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lead "|| .==' _-' `-_ `=' _-' `-_ `=' _-' `-_ /| \\/ | ||\n"
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lead "|| .==' _-' '-__\\._-' '-_./__-' `' |. /| | ||\n"
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lead "||.==' _-' `' | /==.||\n"
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lead "==' _-' E M A C S \\/ `==\n"
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lead "\\ _-' `-_ /\n"
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lead " `'' ``'")
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'face 'font-lock-comment-face)
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"\n\n"
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(propertize
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(s-trim-right
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(s-center (max 0 (1- width)) "Press `,m` to open recent files, or `,E` to access emacs.d"))
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'face 'font-lock-keyword-face)
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(concat
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"\n\n"
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(s-trim-right (s-center (max 0 (- width 2)) (format "Loaded in %s" (emacs-init-time))))))))
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(back-to-indentation)
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(doom|update-scratch-buffer nil t)
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(let ((width 78) height)
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(mapc (lambda (window)
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(set-window-margins window 0 0)
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(let ((pad (max 0 (- (truncate (/ (window-width window) 2)) (truncate (/ width 2))))))
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(set-window-margins window pad pad)
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(setq height (max 0
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(min (or height 9999)
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(- (truncate (/ (window-height window) 2)) 13))))))
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(get-buffer-window-list doom-buffer nil t))
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(erase-buffer)
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(insert (propertize
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(concat
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(make-string (if height (max 0 height) 0) ?\n)
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"================= =============== =============== ======== ========\n"
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"\\\\ . . . . . . .\\\\ //. . . . . . .\\\\ //. . . . . . .\\\\ \\\\. . .\\\\// . . //\n"
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"||. . ._____. . .|| ||. . ._____. . .|| ||. . ._____. . .|| || . . .\\/ . . .||\n"
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"|| . .|| ||. . || || . .|| ||. . || || . .|| ||. . || ||. . . . . . . ||\n"
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"||. . || || . .|| ||. . || || . .|| ||. . || || . .|| || . | . . . . .||\n"
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"|| . .|| ||. _-|| ||-_ .|| ||. . || || . .|| ||. _-|| ||-_.|\\ . . . . ||\n"
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"||. . || ||-' || || `-|| || . .|| ||. . || ||-' || || `|\\_ . .|. .||\n"
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"|| . _|| || || || || ||_ . || || . _|| || || || |\\ `-_/| . ||\n"
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"||_-' || .|/ || || \\|. || `-_|| ||_-' || .|/ || || | \\ / |-_.||\n"
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"|| ||_-' || || `-_|| || || ||_-' || || | \\ / | `||\n"
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"|| `' || || `' || || `' || || | \\ / | ||\n"
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"|| .===' `===. .==='.`===. .===' /==. | \\/ | ||\n"
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"|| .==' \\_|-_ `===. .===' _|_ `===. .===' _-|/ `== \\/ | ||\n"
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"|| .==' _-' `-_ `=' _-' `-_ `=' _-' `-_ /| \\/ | ||\n"
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"|| .==' _-' '-__\\._-' '-_./__-' `' |. /| | ||\n"
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"||.==' _-' `' | /==.||\n"
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"==' _-' E M A C S \\/ `==\n"
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"\\ _-' `-_ /\n"
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" `'' ``'")
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'face 'font-lock-comment-face)
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"\n\n"
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(propertize
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(s-center 78 "Press `,m` to open recent files, or `,E` to access emacs.d")
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'face 'font-lock-keyword-face)
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"\n\n"
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(s-center 78 (format "Loaded in %s" (emacs-init-time))))
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(back-to-indentation))
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;;
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(when dir (setq default-directory dir))
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;;
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(setq mode-line-format (doom-modeline 'scratch))
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;; Readjust the scratch buffer if it is visible, when the window config changes.
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(add-hook 'window-configuration-change-hook 'doom|update-scratch-buffer-hook)))
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(add-hook 'window-configuration-change-hook 'doom-reload-scratch-buffer)))
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(provide 'core-scratch)
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;;; core-scratch.el ends here
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