;;; packages.el --- Colors Layer packages File for Spacemacs
;;
;; Copyright (c) 2012-2014 Sylvain Benner
;; Copyright (c) 2014-2015 Sylvain Benner & Contributors
;;
;; Author: Sylvain Benner <sylvain.benner@gmail.com>
;; URL: https://github.com/syl20bnr/spacemacs
;;
;; This file is not part of GNU Emacs.
;;
;;; License: GPLv3
(defvar colors-packages
'(
rainbow-identifiers
)
"List of all packages to install and/or initialize. Built-in packages
which require an initialization must be listed explicitly in the list.")
(defun colors/init-rainbow-identifiers ()
(use-package rainbow-identifiers
:commands rainbow-identifiers-mode
:init
(progn
(setq rainbow-identifiers-choose-face-function 'rainbow-identifiers-cie-l*a*b*-choose-face
rainbow-identifiers-cie-l*a*b*-saturation 100
rainbow-identifiers-cie-l*a*b*-lightness 40
;; override theme faces
rainbow-identifiers-faces-to-override '(highlight-quoted-symbol
font-lock-variable-name-face))
(defun colors/toggle-rainbow-indentifiers ()
"Toggle rainbow identifiers."
(interactive)
(if (and (boundp 'rainbow-identifiers-mode)
(symbol-value rainbow-identifiers-mode))
(progn
(colors//tweak-theme-colors-font-lock t)
(rainbow-identifiers-mode -1))
(colors//tweak-theme-colors-font-lock)
(rainbow-identifiers-mode)))
(evil-leader/set-key "tCi" 'colors/toggle-rainbow-indentifiers)
(add-to-hooks 'rainbow-identifiers-mode '(prog-mode-hook
erlang-mode-hook))
(defun colors//tweak-theme-colors-font-lock (&optional restore)
"Nilify some font locks. If RESTORE in non nil the font locks are
restored."
;; To make the variables stand out, keyword coloring is disabled
(cond
(restore
(set-attributes-from-alist
'font-lock-function-name-face original-font-lock-function-name-face-attributes)
(set-attributes-from-alist
'font-lock-keyword-face original-font-lock-keyword-face-attributes))
(t
(set-face-attribute 'font-lock-function-name-face nil
:foreground nil :slant 'normal :weight 'normal)
(set-face-attribute 'font-lock-keyword-face nil
:foreground nil :slant 'normal :weight 'bold)))
(font-lock-fontify-buffer))
(defun colors//tweak-theme-colors (theme)
"Tweak color themes by adjusting rainbow-identifiers colors settings an by
disabling some faces in order to make colored identifiers stand out."
(interactive)
;; tweak the saturation and lightness of identifier colors
(pcase theme
(`leuven (setq rainbow-identifiers-cie-l*a*b*-saturation 100
rainbow-identifiers-cie-l*a*b*-lightness 40))
(`monokai (setq rainbow-identifiers-cie-l*a*b*-saturation 55
rainbow-identifiers-cie-l*a*b*-lightness 60))
(`solarized-dark (setq rainbow-identifiers-cie-l*a*b*-saturation 85
rainbow-identifiers-cie-l*a*b*-lightness 65))
(`solarized-light (setq rainbow-identifiers-cie-l*a*b*-saturation 100
rainbow-identifiers-cie-l*a*b*-lightness 40))
(`zenburn (setq rainbow-identifiers-cie-l*a*b*-saturation 40
rainbow-identifiers-cie-l*a*b*-lightness 65))
(_ (setq rainbow-identifiers-cie-l*a*b*-saturation 80
rainbow-identifiers-cie-l*a*b*-lightness 45)))
;; backup to original font locks
(let ((frame (selected-frame)))
(setq original-font-lock-function-name-face-attributes
(face-all-attributes font-lock-function-name-face frame))
(setq original-font-lock-keyword-face-attributes
(face-all-attributes font-lock-keyword-face frame)))
;; tweak the font locks
(colors//tweak-theme-colors-font-lock)))
(colors//tweak-theme-colors spacemacs-cur-theme)
(defadvice spacemacs/post-theme-init (after colors/post-theme-init activate)
"Adjust lightness and brightness of rainbow-identifiers on post theme init."
(colors//tweak-theme-colors spacemacs-cur-theme))
:config
(progn
;; functions to change saturation and lightness of colors
(defun colors//change-color-mini-mode-doc (component)
"Display a short documentation in the mini buffer."
(let ((var (intern (format
"rainbow-identifiers-cie-l*a*b*-%s" component))))
(echo "Change color %s mini-mode (value: %s)
+ to increase %s
- to decrease %s
= to reset
Press any other key to exit." component (eval var) component component)))
(defun colors/change-color-component-overlay-map (component)
"Set a temporary overlay map to easily change a color COMPONENT from
rainbow-identifier mode. The color COMPONENT can be 'saturation' or
'lightness'."
(set-temporary-overlay-map
(let ((map (make-sparse-keymap))
(up-func (intern (format "colors/change-color-%s-up" component)))
(down-func (intern (format "colors/change-color-%s-down" component)))
(reset-func (intern (format "colors/change-color-%s-reset" component))))
(define-key map (kbd "+") up-func)
(define-key map (kbd "-") down-func)
(define-key map (kbd "=") reset-func)
map) t)
(colors//change-color-mini-mode-doc component))
(defun colors/start-change-color-saturation ()
"Initiate the overlay map to change the saturation."
(interactive)
(colors/change-color-component-overlay-map "saturation"))
(defun colors/change-color-saturation-up ()
"Increase the saturation by 5 units."
(interactive)
(colors//change-color-component-func "saturation" 5))
(defun colors/change-color-saturation-down ()
"Decrease the saturation by 5 units."
(interactive)
(colors//change-color-component-func "saturation" -5))
(defun colors/change-color-saturation-reset ()
"Reset the saturation to 100."
(interactive)
(colors//change-color-component-func "saturation" 100 t))
(defun colors/start-change-color-lightness ()
"Initiate the overlay map to change the lightness."
(interactive)
(colors/change-color-component-overlay-map "lightness"))
(defun colors/change-color-lightness-up ()
"Increase the lightness by 5 units."
(interactive)
(colors//change-color-component-func "lightness" 5))
(defun colors/change-color-lightness-down ()
"Decrease the lightness by 5 units."
(interactive)
(colors//change-color-component-func "lightness" -5))
(defun colors/change-color-lightness-reset ()
"Reset the lightness to 40."
(interactive)
(colors//change-color-component-func "lightness" 40 t))
(defun colors//change-color-component-func
(component inc &optional reset)
"Change the color component by adding INC value to it. If RESET is not
nil the color component is set to INC."
(let* ((var (intern (format
"rainbow-identifiers-cie-l*a*b*-%s" component)))
(new-value (+ (eval var) inc)))
(if reset
(set var inc)
(progn
(if (< new-value 0)
(setq new-value 0))
(set var new-value)))
(font-lock-fontify-buffer)
(colors/change-color-component-overlay-map component)))
;; key bindings
(evil-leader/set-key "Cis" 'colors/start-change-color-saturation)
(evil-leader/set-key "Cil" 'colors/start-change-color-lightness))))