#+TITLE:  Org As A Word Processor
#+AUTHOR: Howard X. Abrams
#+DATE:   2020-09-10
#+FILETAGS: :emacs:

A literate programming file for making Org file more readable.

#+BEGIN_SRC emacs-lisp :exports none
  ;;; ha-org-word-processor --- Making Org file more readable. -*- lexical-binding: t; -*-
  ;;
  ;; © 2020-2022 Howard X. Abrams
  ;;   This work is licensed under a Creative Commons Attribution 4.0 International License.
  ;;   See http://creativecommons.org/licenses/by/4.0/
  ;;
  ;; Author: Howard X. Abrams <http://gitlab.com/howardabrams>
  ;; Maintainer: Howard X. Abrams
  ;; Created: September 10, 2020
  ;;
  ;; This file is not part of GNU Emacs.
  ;;
  ;; *NB:* Do not edit this file. Instead, edit the original literate file at:
  ;;           ~/other/hamacs/ha-org-word-processor.org
  ;;       Using `find-file-at-point', and tangle the file to recreate this one .
  ;;
  ;;; Code:
#+END_SRC
* Introduction
I like having org-mode files look more like a word processor than having it look like programming code. But that is just me.
* General Org Settings
Since I use ellipsis in my writing… to /change/ how org renders a collapsed heading.

#+BEGIN_SRC emacs-lisp
  (setq org-pretty-entities t
        org-ellipsis "⤵"     ; …, ➡, ⚡, ▼, ↴, , ∞, ⬎, ⤷, ⤵
        org-agenda-breadcrumbs-separator " ❱ "
        org-catch-invisible-edits 'show-and-error
        org-special-ctrl-a/e t     ; Note: Need to get this working with Evil!
        org-src-fontify-natively t ; Pretty code blocks
        org-hide-emphasis-markers t)
#+END_SRC

Oh, and as I indent lists, they should change the /bulleting/ in a particular sequence. If I begin with an =*= asterisk, I walk down the chain, but with the dashed bullets (my default choice), I just stay with dashed bullets. Numeric bullets should cycle:

#+BEGIN_SRC emacs-lisp
  (setq org-list-demote-modify-bullet '(("*" . "+") ("+" . "-") ("-" . "-")
                                        ("1." . "a.") ("a." . "1.")))
#+END_SRC
** Typographic Quotes
According to [[http://endlessparentheses.com/prettify-your-quotation-marks.html][Artur Malabarba]] of [[http://endlessparentheses.com/prettify-you-apostrophes.html][Endless Parenthesis]] blog, I type a /straight quote/, ", Emacs actually inserts Unicode rounded quotes, like “this”. This idea isn’t how a file is /displayed/, but actually how the file is /made/. Time will tell if this idea works with my auxiliary functions on my phone, like [[https://play.google.com/store/apps/details?id=com.orgzly&hl=en_US&gl=US][Orgzly]] and [[https://github.com/amake/orgro][Orgro]].

Stealing his function so that “quotes” just work to insert /rounded/ quotation marks:

#+BEGIN_SRC emacs-lisp
(define-key org-mode-map "\"" #'endless/round-quotes)

(defun endless/round-quotes (italicize)
  "Insert “” and leave point in the middle.
With prefix argument ITALICIZE, insert /“”/ instead
\(meant for org-mode).
Inside a code-block, just call `self-insert-command'."
  (interactive "P")
  (if (and (derived-mode-p 'org-mode)
           (org-in-block-p '("src" "latex" "html")))
      (call-interactively #'self-insert-command)
    (if (looking-at "”[/=_\\*]?")
        (goto-char (match-end 0))
      (when italicize
        (if (derived-mode-p 'markdown-mode)
            (insert "__")
          (insert "//"))
        (forward-char -1))
      (insert "“”")
      (forward-char -1))))
#+END_SRC

Stealing function for automatically adding a single quote (not in pairs):

#+BEGIN_SRC emacs-lisp
(define-key org-mode-map "'" #'endless/apostrophe)

(defun endless/apostrophe (opening)
  "Insert ’ in prose or `self-insert-command' in code.
With prefix argument OPENING, insert ‘’ instead and
leave point in the middle.
Inside a code-block, just call `self-insert-command'."
  (interactive "P")
  (if (and (derived-mode-p 'org-mode)
           (org-in-block-p '("src" "latex" "html")))
      (call-interactively #'self-insert-command)
    (if (looking-at "['’][=_/\\*]?")
        (goto-char (match-end 0))
      (if (null opening)
          (insert "’")
        (insert "‘’")
        (forward-char -1)))))
#+END_SRC
Quote: “From this time forward, I shouldn’t have to worry about quotes.”

*Note:* I still need to worry about how quotes affect [[file:ha-org.org::*Spell Checking][spell checking]].
* Org Beautify
I really want to use the Org Beautify package, but it overrides my darker themes (and all I really want is headlines to behave).

First step is to make all Org header levels to use the variable font, and be the same color as the default text:

#+BEGIN_SRC emacs-lisp
  (when window-system
    (let ((default-color (face-attribute 'default :foreground)))
      (dolist (face '(org-level-1 org-level-2 org-level-3 org-level-4 org-level-5 org-level-6 org-level-7 org-level-8))
        (set-face-attribute face nil
                            :foreground default-color :weight 'bold :font ha-variable-font))))
#+END_SRC

Next, we just need to change the header sizes:

#+BEGIN_SRC emacs-lisp
  (when window-system
    (set-face-attribute 'org-level-1 nil :height 2.2)
    (set-face-attribute 'org-level-2 nil :height 1.8)
    (set-face-attribute 'org-level-3 nil :height 1.4)
    (set-face-attribute 'org-level-4 nil :height 1.1))
#+END_SRC

While we are at it, let’s make sure the code blocks are using my fixed with font:
#+BEGIN_SRC emacs-lisp
  (when window-system
    (dolist (face '(org-block org-code org-verbatim org-table org-drawer
                    org-special-keyword org-property-value org-document-info-keyword))
      (set-face-attribute face nil :inherit 'fixed-pitch)))
#+END_SRC
Not sure why the above code removes the color of =org-verbatim=, so let’s make it stand out slightly:
#+BEGIN_SRC emacs-lisp
  (set-face-attribute 'org-verbatim nil :foreground "#aaaacc")
#+END_SRC
And some slight adjustments to the way blocks are displayed:
#+BEGIN_SRC emacs-lisp
  (set-face-attribute 'org-block-begin-line nil :background "#282828")
  (set-face-attribute 'org-block nil :height 0.95)
  (set-face-attribute 'org-block-end-line nil :background "#262626")
#+END_SRC
And decrease the prominence of the property drawers:
#+BEGIN_SRC emacs-lisp
  (set-face-attribute 'org-drawer nil :height 0.8)
  (set-face-attribute 'org-property-value nil :height 0.85)
  (set-face-attribute 'org-special-keyword nil :height 0.85)
#+END_SRC
This process allows us to use =variable-pitch= mode for all org documents.
#+BEGIN_SRC emacs-lisp
  (use-package org
    :hook (org-mode . variable-pitch-mode))
#+END_SRC
* SVG-Based Prettiness
While I'm intrigued with [[https://github.com/rougier][Nicolas P. Rougier]]'s [[https://github.com/rougier/notebook-mode][notebook project]], I really just want to steal their [[https://github.com/rougier/svg-lib][svg-lib project]] that allows me to create and display various SVG objects, namely tags, progress bars, progress pies and icons.  Each object fits nicely in a text buffer ensuring width is an integer multiple of character width.

#+BEGIN_SRC emacs-lisp
  (use-package svg-lib
    :straight (:type git :protocol ssh :host github :repo "rougier/svg-lib"))

  (use-package svg-tag-mode
    :straight (:type git :protocol ssh :host github :repo "rougier/svg-tag-mode")
    :config
    (setq svg-tag-tags
          '(("TODO:" . ((lambda (tag) (svg-tag-make "TODO" :face 'org-tag
                                                    :radius 2 :inverse t
                                                    :margin 0 :padding 0 :height 0.8))))
            ("NOTE:" . ((lambda (tag) (svg-tag-make "NOTE" :face 'font-lock-comment-face
                                                    :inverse nil :margin 0 :radius 2 :height 0.8))))
            ; The org-modern overrides this:
            ; ("#\\+RESULTS:" . ((lambda (tag) (svg-tag-make tag :beg 0 :end -1 :height 0.6))))
            ("\\(:[A-Z-]+\\):[a-zA-Z#0-9]+:" . ((lambda (tag)
                                                 (svg-tag-make tag :beg 1 :inverse t
                                                               :margin 0 :crop-right t))))
            (":[A-Z-]+\\(:[a-zA-Z#0-9]+:\\)" . ((lambda (tag)
                                                 (svg-tag-make tag :beg 1 :end -1
                                                               :margin 0 :crop-left t))))
            ("\\(:[A-Z-]+:\\)[ \n]" . ((lambda (tag) (svg-tag-make tag :beg 1 :end -1 :margin 0))))))
    (global-svg-tag-mode 1))
#+END_SRC
What does do? Here are some examples:
  TODO: Marks comments for tasks (this can be in source files too).
  NOTE: Highlights comments and other notes.
  :PROP:tag: are highlighted as two parts of the same tag
  And :TAG: with colons are highlighted, which include :PROPERTY: drawers.

When the project is more complete, I need to dive into this:
#+BEGIN_SRC emacs-lisp :tangle no
  (use-package notebook
    :straight (:type git :protocol ssh :host github :repo "rougier/notebook")
    :after org
    :hook (org-mode . notebook-mode))
#+END_SRC

In the interim, let’s use [[https://github.com/minad/org-modern][org-modern]] mode:
#+BEGIN_SRC emacs-lisp
  (use-package org-modern
    :straight (:type git :protocol ssh :host github :repo "minad/org-modern")
    :custom (org-modern-label-border 0.1
             org-modern-variable-pitch t
             org-modern-tag  nil  ; Letting svg-tag do this
             org-modern-list . '((?+ . "◦")
                                 (?- . "•")
                                 (?* . "●")))
    :config
    (setq org-auto-align-tags nil
          org-tags-column 0)
    :hook
    (org-mode . org-modern-mode)
    (org-agenda-finalize . org-modern-agenda))
#+END_SRC

I liked the approach to the [[https://github.com/TonCherAmi/org-padding][org-padding]] project in how it allowed granular tweaks to add extra padding. This package doesn’t work with =org-modern=, but I may look more into it later.
* Pasting
I like the idea that I will paste HTML text from the clipboard and have it converted to org-formatted text:
#+BEGIN_SRC emacs-lisp
(defun ha-org-paste ()
  (interactive)
  (if (eq system-type 'gnu/linux)
      (shell-command "xclip -t text/html -o | pandoc -r html -w org" t)))
#+END_SRC
* Presentations
Used to use [[https://github.com/takaxp/org-tree-slide][org-tree-slide]] for showing org files as presentations. Converted to use [[https://github.com/rlister/org-present][org-present]]. I love the /hooks/ as that makes it easier to pull out much of my =demo-it= configuration. My concern with =org-present= is that it only jumps from one top-level to another top-level header.

#+BEGIN_SRC emacs-lisp
  (use-package org-present
    :init
    (defvar ha-org-present-mode-line mode-line-format "Cache previous mode-line format state")

    :config
    (defun org-blocks-hide-headers ()
      "Make the headers and other block metadata invisible. See `org-blocks-show-headers'."
      (add-to-invisibility-spec 'ha-org-block-headers)

      (defun hide-this (regexp)
        (goto-char (point-min))
        (while (re-search-forward regexp nil t)
          (let ((start (match-beginning 0)) (end (1+ (match-end 0))))
            (overlay-put (make-overlay start end) 'invisible 'ha-org-block-headers))))

      (defun hide-these (patterns)
        (when patterns
            (hide-this (car patterns))
            (hide-these (cdr patterns))))

      (save-excursion
        (hide-these (list (rx bol (zero-or-more space)
                              "#+" (or "begin" "end") "_"
                              (one-or-more any) eol)
                          (rx bol (zero-or-more space)
                              "#+" (or "name" "header" "results" "property" "options"
                                       "filetags") ":"
                              (zero-or-more any) eol)
                          (rx bol (zero-or-more space)
                              ":" (or "properties" "header-args" "end") ":"
                              (zero-or-more any) eol)))))

    (defun org-blocks-show-headers ()
      "Un-invisibilize the headers and other block metadata invisible.
    In other words, this undoes what `org-blocks-hide-headers' did."
      (remove-from-invisibility-spec 'ha-org-block-headers))

    (defun org-present-start ()
      (goto-char (point-min)) (re-search-forward (rx bol "*"))
      (org-blocks-hide-headers)
      (org-present-big)
      (setq mode-line-format nil)
      (org-display-inline-images)
      (blink-cursor-mode -1)
      (setq cursor-type nil))

    (defun org-present-end ()
      (org-present-small)
      (org-blocks-show-headers)
      (setq mode-line-format ha-org-present-mode-line-format)
      (setq cursor-type t)
      (blink-cursor-mode 1)
      (org-present-read-write))

    :hook
    (org-present-mode . org-present-start)
    (org-present-mode-quit . org-present-end))
#+END_SRC
* Technical Artifacts                                :noexport:
Let's provide a name so that the file can be required:
#+BEGIN_SRC emacs-lisp :exports none
(provide 'ha-org-word-processor)
;;; ha-org-word-processor.el ends here
#+END_SRC
Before you can build this on a new system, make sure that you put the cursor over any of these properties, and hit: ~C-c C-c~

#+DESCRIPTION: A literate programming file for making Org file more readable.

#+PROPERTY:    header-args:sh :tangle no
#+PROPERTY:    header-args:emacs-lisp :tangle yes
#+PROPERTY:    header-args    :results none   :eval no-export   :comments no

#+OPTIONS:     num:nil toc:nil todo:nil tasks:nil tags:nil date:nil
#+OPTIONS:     skip:nil author:nil email:nil creator:nil timestamp:nil
#+INFOJS_OPT:  view:nil toc:nil ltoc:t mouse:underline buttons:0 path:http://orgmode.org/org-info.js