feat(projects/treemacs): customize highlight line background color

modules/projects/siren-treemacs.el

@@ -11,6 +11,9 @@
   ("C-x C-p" . treemacs)
   ("C-x p" . treemacs-select-window)
 
+  :hook
+  (treemacs-mode . siren-treemacs-change-hl-line-mode)
+
   :custom
   (treemacs-collapse-dirs 3)
   (treemacs-follow-after-init t)
@@ -26,6 +29,21 @@
   (treemacs-last-error-persist-file
    (expand-file-name "treemacs-persist-at-last-error" siren-cache-dir))
 
+  :init
+  (defgroup siren-treemacs nil
+    "Siren specific settings for treemacs."
+    :group 'treemacs)
+
+  (defface siren-treemacs-line-highlight '((t (:extend t)))
+    "Custom line-highlight face for treemacs."
+    :group 'siren-treemacs)
+
+  (defun siren-treemacs-change-hl-line-mode ()
+    "Use a custom face to control style of highlighted line."
+    (setq-local hl-line-face 'siren-treemacs-line-highlight)
+    (overlay-put hl-line-overlay 'face hl-line-face)
+    (treemacs--setup-icon-background-colors))
+
   :config
   (defvar treemacs-no-load-time-warnings t)
 

themes/siren-doom-themes-overrides-theme.el

@@ -102,6 +102,10 @@
  `(diredp-deletion-file-name ((t ( :foreground ,(doom-color 'red) ))))
  `(diredp-compressed-file-name ((t ( :foreground ,(doom-color 'blue) ))))
 
+ ;; treemacs
+ `(siren-treemacs-line-highlight ((t ( :background ,(doom-blend 'violet 'bg 0.2)
+                                       :extend t ))))
+
  ;; selectrum
  `(selectrum-current-candidate ((t ( :background ,(doom-blend 'violet 'bg 0.2)
                                      :foreground ,(doom-blend 'violet 'fg 0.3)