#+TITLE:   ui/doom
#+DATE:    October 9, 2019
#+SINCE:   v1.3
#+STARTUP: inlineimages nofold

* Table of Contents :TOC_3:noexport:
- [[#description][Description]]
  - [[#module-flags][Module Flags]]
  - [[#plugins][Plugins]]
- [[#prerequisites][Prerequisites]]
- [[#configuration][Configuration]]
  - [[#changing-theme][Changing theme]]
  - [[#changing-fonts][Changing fonts]]
- [[#troubleshooting][Troubleshooting]]
  - [[#strange-font-symbols][Strange font symbols]]
  - [[#ugly-background-colors-in-tty-emacs-for-daemon-users][Ugly background colors in tty Emacs for daemon users]]

* Description
This module gives Doom its signature look: powered by the =doom-one= theme
(inspired by Atom's One Dark theme) and =solaire-mode=.

+ A colorscheme inspired by Atom's One Dark theme (now available in a separate
  plugin: [[https://github.com/hlissner/emacs-doom-theme/][doom-themes]])
+ A custom folded-region indicator for ~hideshow~
+ "Thin bar" fringe bitmaps for ~git-gutter-fringe~
+ File-visiting buffers are slightly brighter (thanks to solaire-mode)

** Module Flags
This module provides no flags.

** Plugins
+ [[https://github.com/hlissner/emacs-doom-themes][doom-themes]]
+ [[https://github.com/hlissner/emacs-solaire-mode][solaire-mode]]

* Prerequisites
This module has no prereqisites.

* Configuration
** Changing theme
Although this module uses the ~doom-one~ theme by default, [[https://github.com/hlissner/emacs-doom-theme/][doom-themes]] offers a number of alternatives:

+ *doom-one:* doom-themes' flagship theme, inspired by [[https://atom.io/][Atom's]] One Dark themes
+ *doom-vibrant:* a more vibrant version of doom-one
+ *doom-molokai:* based on Textmate's monokai
+ *doom-nova:* adapted from [[https://trevordmiller.com/projects/nova][Nova]]
+ *doom-one-light:* light version of doom-one
+ *doom-peacock:* based on Peacock from [[https://daylerees.github.io/][daylerees' themes]]
+ *doom-tomorrow-night:* by [[https://github.com/ChrisKempson/Tomorrow-Theme][Chris Kempson]]

This can be changed by changing the ~doom-theme~ variable, e.g.

#+BEGIN_SRC emacs-lisp
(setq doom-theme 'doom-molokai)
#+END_SRC

** Changing fonts
core/core-ui.el has four relevant variables:

+ ~doom-font~ :: the default font to use in Doom Emacs.
+ ~doom-big-font~ :: the font to use when ~doom-big-font-mode~ is enabled.
+ ~doom-variable-font~ :: the font to use when ~variable-pitch-mode~ is active (or where the ~variable-pitch~ face is used).
+ ~doom-unicode-font~ :: the font used to display unicode symbols. This is ignored if the =:ui unicode= module is enabled.

#+BEGIN_SRC emacs-lisp
(setq doom-font (font-spec :family "Fira Mono" :size 12)
      doom-variable-pitch-font (font-spec :family "Fira Sans")
      doom-unicode-font (font-spec :family "DejaVu Sans Mono")
      doom-big-font (font-spec :family "Fira Mono" :size 19))
#+END_SRC

* Troubleshooting
** Strange font symbols
If you're seeing strange unicode symbols, this is likely because you don't have
~all-the-icons~'s font icon installed. You can install them with ~M-x
all-the-icons-install-fonts~.

** Ugly background colors in tty Emacs for daemon users
=solaire-mode= is an aesthetic plugin that makes file-visiting buffers brighter
than the rest of the Emacs' frame (to visually differentiate temporary windows
or sidebars from editing windows). This looks great in GUI Emacs, but can look
questionable in the terminal.

It disables itself if you start tty Emacs with ~emacs -nw~, but if you create a
tty frame from a daemon (which solaire-mode cannot anticipate), you'll get an
ugly background instead.

If you only use Emacs in the terminal, your best bet is to disable the
solaire-mode package:

#+BEGIN_SRC elisp
;; in ~/.doom.d/packages.el
(package! solaire-mode :disable t)
#+END_SRC