Using all-the-icons for Treemacs

There are many reason to use treemacs rather than neotree, for example, a better git integration, or the most important one, it allows you to have the project/frame specific tree, the thing that neotree cannot do.

One thing that bugged me is the default icons of treemacs looks horrible, especially on Macbook's screen. And since I'm already using all-the-icons for my modeline, it would be nice if I can use it for treemacs as well.

After taking a quick look, seems like doom-themes already done a lot of customization for treemacs, including adding all-the-icons, you can see it here emacs-doom-themes/doom-themes-treemacs.el. All what I need to do now is just copy and paste, here's my treemacs config:

;; Treemacs
(use-package treemacs
  :ensure t
  (treemacs-follow-mode t)
  (setq treemacs-width 35
        treemacs-display-in-side-window t
        treemacs-indentation-string (propertize " " 'face 'font-lock-comment-face)
        treemacs-indentation 1)
  (add-hook 'treemacs-mode-hook #'hide-mode-line-mode)
  (add-hook 'treemacs-mode-hook (lambda ()
                                  (linum-mode -1)
                                  (fringe-mode 0)
                                  (setq buffer-face-mode-face `(:background "#211C1C"))
                                  (buffer-face-mode 1)))
  ;; Improve treemacs icons
  (with-eval-after-load 'treemacs
    (with-eval-after-load 'all-the-icons
      (let ((all-the-icons-default-adjust 0)
            (tab-width 1))
        ;; Root icon
        (setq treemacs-icon-root-png
              (concat (all-the-icons-octicon "repo" :height 0.8 :v-adjust -0.2)  " "))
        ;; File icons
        (setq treemacs-icon-open-png
               (all-the-icons-octicon "chevron-down" :height 0.8 :v-adjust 0.1)
               (all-the-icons-octicon "file-directory" :v-adjust 0)
               (all-the-icons-octicon "chevron-right" :height 0.8
                                      :v-adjust 0.1 :face 'font-lock-doc-face)
               (all-the-icons-octicon "file-directory" :v-adjust 0 :face 'font-lock-doc-face)
        ;; File type icons
        (setq treemacs-icons-hash (make-hash-table :size 200 :test #'equal)
              treemacs-icon-fallback (concat
                                      (all-the-icons-faicon "file-o" :face 'all-the-icons-dsilver
                                                            :height 0.8 :v-adjust 0.0)
              treemacs-icon-text treemacs-icon-fallback)

        (dolist (item all-the-icons-icon-alist)
          (let* ((extension (car item))
                 (func (cadr item))
                 (args (append (list (caddr item)) '(:v-adjust -0.05) (cdddr item)))
                 (icon (apply func args))
                 (key (s-replace-all '(("^" . "") ("\\" . "") ("$" . "") ("." . "")) extension))
                 (value (concat "\t\t" icon "\t")))
            (unless (ht-get treemacs-icons-hash (s-replace-regexp "\\?" "" key))
              (ht-set! treemacs-icons-hash (s-replace-regexp "\\?" "" key) value))
            (unless (ht-get treemacs-icons-hash (s-replace-regexp ".\\?" "" key))
              (ht-set! treemacs-icons-hash (s-replace-regexp ".\\?" "" key) value))))))))

(use-package treemacs-projectile
  :ensure t)

And the screenshot:


Date: 2019-05-13 Mon 00:00

Author: Huy Tran

Created: 2019-05-13 Mon 11:58