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dotfiles/emacs-lisp/org_mode.org
magic_rb 76d78520c1
Add scrartcl latex class to org-mode 
Signed-off-by: magic_rb <magic_rb@redalder.org>
2024-05-04 21:00:33 +02:00

255 lines
9 KiB
Org Mode
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:PROPERTIES:
:ID: 986ca7a5-d225-49bb-9e35-f2dffafe8aee
:header-args:emacs-lisp: :comments link :results none
:END:
#+title: Org Mode
#+filetags: emacs-load
# SPDX-FileCopyrightText: 2022 Richard Brežák <richard@brezak.sk>
#
# SPDX-License-Identifier: LGPL-3.0-or-later
I used to respect the 80 column limit, but why waste all the space when it can be dynamic. In this way all of the available screen space is utilized.
#+BEGIN_SRC emacs-lisp :results none
(add-hook 'org-mode-hook 'visual-line-mode)
#+END_SRC
Enable /"fake"/ indentation in =org-mode=, in other words, add indentation using overlays, but on disk the buffer is not indented.
#+BEGIN_SRC emacs-lisp :results none
(add-hook 'org-mode-hook 'org-indent-mode)
#+END_SRC
Increase the size of headings, in my personal opinion this makes the headings stand out a bit more and therefore easier to read.
#+BEGIN_SRC emacs-lisp :results none
(custom-set-faces
'(org-level-1 ((t (:inherit outline-1 :height 1.25))))
'(org-level-2 ((t (:inherit outline-2 :height 1.2))))
'(org-level-3 ((t (:inherit outline-3 :height 1.15))))
'(org-level-4 ((t (:inherit outline-4 :height 1.10))))
'(org-level-5 ((t (:inherit outline-5 :height 1.05)))))
#+END_SRC
Disable element cache for now, it freaks out all the damn time. God forbid I make a tiny syntax error...
#+begin_src emacs-lisp
(setq org-element-use-cache nil)
#+end_src
#+begin_src emacs-lisp
(setf org-blank-before-new-entry '((heading . t) (plain-list-item . nil)))
#+end_src
#+begin_src emacs-lisp
(setq org-src-window-setup 'current-window)
#+end_src
* Org Mark Ring
To go back to the previous mark, very useful with [[id:18476d68-cccb-48f4-aa77-caefe213d8bd][Org Roam]].
#+BEGIN_SRC emacs-lisp :results none
(general-def org-mode-map "C-c b" 'org-mark-ring-goto)
#+END_SRC
* Babel
Enable =tangle on save=, big thanks to Diego Zamboni for his amazing booklet about /[[https://leanpub.com/lit-config/read][Literate Configuration]]/.
#+BEGIN_SRC emacs-lisp :results none
(add-hook 'org-mode-hook
(lambda () (add-hook 'after-save-hook #'org-babel-tangle :append :local)))
#+END_SRC
After executing a source code block with =org-babel=, redisplay inline images, this speeds up the REPL-like workflow a lot.
#+BEGIN_SRC emacs-lisp :results none
(add-hook 'org-babel-after-execute-hook 'org-redisplay-inline-images)
#+END_SRC
Enable additional babel languages.
#+BEGIN_SRC emacs-lisp :results none
(org-babel-do-load-languages
'org-babel-load-languages
(cl-map 'list (lambda (lang) `(,lang . t))
'(python R shell dot latex plantuml)))
#+END_SRC
* Latex
For previews, create SVGs and not PNGs or something, use the ~dvisvgm-lua~ command.
#+BEGIN_SRC emacs-lisp :results none
(setq org-preview-latex-default-process 'dvisvgm)
#+END_SRC
Actually define ~dvisvgm-lua~.
#+begin_src emacs-lisp :results none
(add-to-list
'org-preview-latex-process-alist
'(dvisvgm-lua
:programs ("dvilualatex" "dvisvgm")
:description "dvi > svg"
:message "you need to install the programs: latex and dvisvgm."
:image-input-type "dvi"
:image-output-type "svg"
:image-size-adjust (1.7 . 1.5)
:latex-compiler ("dvilualatex -interaction nonstopmode -output-directory %o %f")
:image-converter ("dvisvgm %f -n -b min -c %S -o %O")))
#+end_src
Adjust size of LaTeX previews.
#+BEGIN_SRC emacs-lisp :results none
(pcase (system-name)
("heater" (setq org-format-latex-options (plist-put org-format-latex-options :scale 1.75)))
("omen" (setq org-format-latex-options (plist-put org-format-latex-options :scale 1.5))))
#+END_SRC
To support non-breakable whitespace, create a new ~org-entity~.
#+begin_src emacs-lisp
(add-to-list 'org-entities
'("space" "~" nil "&nbsp;" " " " " " "))
#+end_src
Enable fontification for inline LaTeX blocks which convieniently also makes in fixed-width.
#+begin_src emacs-lisp
(setq org-highlight-latex-and-related '(native entities))
#+end_src
Org Mode by default considers ~.aux~ files as log files and deletes them. Which among other things breaks ~tikzmark~ and ~babel~...
#+begin_src emacs-lisp
(require 'ox-latex)
(setq org-latex-logfiles-extensions (remove "aux" org-latex-logfiles-extensions))
#+end_src
Don't delete other windows when exporting, it is very distracting, just use popper.
#+begin_src emacs-lisp
(defun org-export--dispatch-ui/popper (fun &rest r)
(flet ((delete-other-windows (&rest r) (ignore)))
(apply fun r)))
(advice-add 'org-export--dispatch-ui :around 'org-export--dispatch-ui/popper)
#+end_src
** Sliced Previews
Normally a LaTeX preview is just one huge image which makes Emacs really jumpy and makes writing prose a really unpleasant experience. With these two functions, that's fixed. They work using mainly text properties (overlays are still involved but only one per preview, max two) so it should be fast still.
#+begin_src emacs-lisp
;;; -*- lexical-binding: t; -*-
(plist-put org-format-latex-options :background "Transparent")
(defadvice org-clear-latex-preview (after org-prop-img--org-clear-later-preview (beg end) activate)
(save-excursion
(goto-char beg)
(with-silent-modifications
(put-text-property beg end 'read-only nil)
(put-text-property beg end 'display nil)
(put-text-property beg end 'line-height nil))
(font-lock-fontify-region beg end)))
(defun org--make-preview-overlay (beg end image &optional imagetype)
"Build an overlay between BEG and END using IMAGE file.
Argument IMAGETYPE is the extension of the displayed image,
as a string. It defaults to \"png\"."
(let* ((imagetype (or (intern imagetype) 'png))
(image-spec (list 'image :type imagetype :file image :ascent 'center))
(ov (make-overlay beg end)))
(overlay-put ov 'org-overlay-type 'org-latex-overlay)
(overlay-put ov
'modification-hooks
(list (lambda (ov after &rest args)
(when (not after)
(org-clear-latex-preview (overlay-start ov) (overlay-end ov))))))
(if (> (count-lines beg end) 1)
(let ((image-height (cdr (image-size image-spec t)))
(y 0)
(endm (make-marker)))
(set-marker endm end)
(save-excursion
(goto-char beg)
(while (and (<= (point) endm) (< y image-height))
(let* ((dy (line-pixel-height)))
;; loop through and check for empty lines, those will break rendering
(when (= (line-beginning-position) (line-end-position))
(goto-char (line-beginning-position))
(insert "%")
(forward-char -1))
(when (> (* dy 2) (- image-height y))
(setq dy (- image-height y)))
(with-silent-modifications
;; place the image property on the current line
(put-text-property
(line-beginning-position) (line-end-position)
'display
(list
(list 'slice
0 y 1.0 dy)
image-spec))
;; ;; remove any fontification face so the images don't get colored
;; (put-text-property (line-beginning-position) (line-end-position)
;; 'face
;; nil)
)
(forward-line 1)
(setq y (+ y dy))))
(if (not (> (point) endm))
(let ((ov (make-overlay (- (point) 1) endm)))
(overlay-put ov 'org-overlay-type 'org-latex-overlay)
(overlay-put ov 'evaporate t)
(overlay-put ov 'invisible t))))
(set-marker endm nil))
(with-silent-modifications
(put-text-property beg end
'display
(list image-spec))))
(font-lock-fontify-region beg end)
(with-silent-modifications
(put-text-property beg end 'line-height t))))
#+end_src
Add koma-script article class.
#+begin_src emacs-lisp
(add-to-list
'org-latex-classes
'("scrartcl" "\\documentclass[11pt]{scrartcl}"
("\\section{%s}" . "\\section*{%s}")
("\\subsection{%s}" . "\\subsection*{%s}")
("\\subsubsection{%s}" . "\\subsubsection*{%s}")
("\\paragraph{%s}" . "\\paragraph*{%s}")
("\\subparagraph{%s}" . "\\subparagraph*{%s}")))
#+end_src
* Visual Fill Column
I figured out eventually that having columns filled at a consistent width and having the text centered is really nice for prose. So enable it.
#+begin_src emacs-lisp
(defun magic_rb/org-mode-visual-fill-column-mode-conf ()
""
(setq visual-fill-column-center-text t))
#+end_src
#+begin_src emacs-lisp
(add-hook 'org-mode-hook #'visual-fill-column-mode)
(add-hook 'org-mode-hook #'magic_rb/org-mode-visual-fill-column-mode-conf)
#+end_src
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