subtree(users/wpcarro): docking briefcase at '24f5a642' r/3226

git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c09813172c79820bcf526bb10cf4208
git-subtree-split: 24f5a642af3aa1627bbff977f0a101907a02c69f
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789

1 files changed, 64 insertions, 0 deletions

diff --git a/users/wpcarro/emacs/.emacs.d/wpc/laptop-battery.el b/users/wpcarro/emacs/.emacs.d/wpc/laptop-battery.el
new file mode 100644
index 000000000000..91b2e3125001
--- /dev/null
+++ b/users/wpcarro/emacs/.emacs.d/wpc/laptop-battery.el
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+;;; laptop-battery.el --- Display laptop battery information -*- lexical-binding: t -*-
+
+;; Author: William Carroll <wpcarro@gmail.com>
+;; Version: 0.0.1
+;; URL: https://git.wpcarro.dev/wpcarro/briefcase
+;; Package-Requires: ((emacs "25.1"))
+
+;;; Commentary:
+;; Some wrappers to obtain battery information.
+;;
+;; To troubleshoot battery consumpton look into the CLI `powertop`.
+
+;;; Code:
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Roadmap
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; TODO: Support functions that work with reporting battery stats.
+;; TODO: low-battery-reporting-threshold
+;; TODO: charged-battery-reporting-threshold
+;; TODO: Format modeline battery information.
+;; TODO: Provide better time information in the modeline.
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Dependencies
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(require 'battery)
+(require 'al)
+(require 'maybe)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Library
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defun laptop-battery-available? ()
+  "Return t if battery information is available."
+  (maybe-some? battery-status-function))
+
+(defun laptop-battery-percentage ()
+  "Return the current percentage of the battery."
+  (->> battery-status-function
+       funcall
+       (al-get 112)))
+
+(defun laptop-battery-print-percentage ()
+  "Return the current percentage of the battery."
+  (interactive)
+  (->> (laptop-battery-percentage)
+       message))
+
+(defun laptop-battery-display ()
+  "Display laptop battery percentage in the modeline."
+  (interactive)
+  (display-battery-mode 1))
+
+(defun laptop-battery-hide ()
+  "Hide laptop battery percentage in the modeline."
+  (interactive)
+  (display-battery-mode -1))
+
+(provide 'laptop-battery)
+;;; laptop-battery.el ends here