spacemacs/layers/+themes/theming/README.org

Theming layer

• Description
  • Features:
• Install
• Usage
  • Example
• Attributes
• Faces
• Headers
• Example

Description

This layer allows for a simple way of modifying themes.

Features:

• Modify themes from your .spacemacs.
• Tweak face attributes and other aspects of themes.
• Includes three additional layer variables for tweaking headings.

Install

To use this configuration layer, add it to your ~/.spacemacs. You will need to add theming to the existing dotspacemacs-configuration-layers list in this file.

Usage

To use this layer, set the value of theming-modifications (a good place is inside your .spacemacs in dotspacemacs/user-init()). It should be a list of the following form:

  ((theme1 (face1 attributes...)
           (face2 attributes...)
           ...)
   (theme2 (face1 attributes...)
           (face2 attributes...)
           ...)
   ...)

Example

  (defun dotspacemacs/user-init ()
    (setq theming-modifications
          '((monokai
             ;; Font locking
             (font-lock-comment-face :slant italic)
             (web-mode-html-attr-name-face :inherit font-lock-variable-name-face
                                           :foreground nil)
             ;; Modeline
             (powerline-active1 :box (:color "#999999"
                                      :line-width 1
                                      :style released-button)
                                :background "#5a5a5a")))))

Source: gist

This will apply the given attributes to the relevant faces whenever the appropriate theme is loaded. To update without changing the theme, use SPC SPC spacemacs/update-theme.

Attributes

See face attributes in the Emacs manual for more information. Some of the more common attributes you might want to tweak are the following:

:inherit

the name of a face to inherit attributes from

:foreground and :background

Hexadecimal color strings

:height

typically a floating point number (1.0 gives the same height as the underlying face)

:weight

typically bold or normal

:underline

typically nil or t

:slant

typically oblique, italic or normal

:box

set to t to draw a box around characters in the foreground

Faces

To see a list over all loaded faces and what they look like, use SPC SPC list-faces-display. You can also use SPC h d c (describe character) on a character to see its face.

Some of the most common faces to modify are the syntactical elements:

• font-lock-builtin-face
• font-lock-comment-delimiter-face
• font-lock-comment-face
• font-lock-constant-face
• font-lock-doc-face
• font-lock-function-name-face
• font-lock-keyword-face
• font-lock-preprocessor-face
• font-lock-string-face
• font-lock-type-face
• font-lock-variable-name-face
• font-lock-warning-face

As well as the mode-line faces for the active and inactive windows:

• powerline-active1
• powerline-active2
• powerline-inactive1
• powerline-inactive2
• mode-line
• mode-line-inactive

Headers

This layer includes three additional layer variables for tweaking headings. Allowed values are a list of themes in which the given effect should happen, or the symbol all to apply it on all themes.

theming-headings-inherit-from-default

inherits all headings from the default face to avoid non-monospaced fonts

theming-headings-same-size

sets the :height attribute to one on all headings to give them the same size as the rest of the text

theming-headings-bold

sets the :weight attribute to bold on all headings

Example

An example of how to set the default font colour to be black in a custom theme leuven:

(defun dotspacemacs/user-init ()

  ; custom theme modification - overriding default font colour
  (setq-default
    theming-modifications
      '((leuven
          (default :foreground "#000000")
       ))
  )

)