tvl-depot/emacs/.emacs.d/wpc/scrot.el
William Carroll b89d1f0a1f Call make-process instead of call-process in scrot.el
While attempting to debug why pressing `C-s-s` from an X-window screenshots my
entire screen, I switched from `call-process` to `make-process`, which is
async.

I still haven't debugged the original issue, but I think this is an improvement
regardless.
2020-09-04 21:06:18 +01:00

58 lines
2 KiB
EmacsLisp

;;; scrot.el --- Screenshot functions -*- lexical-binding: t -*-
;; Author: William Carroll <wpcarro@gmail.com>
;; Version: 0.0.1
;; URL: https://git.wpcarro.dev/wpcarro/briefcase
;; Package-Requires: ((emacs "24"))
;;; Commentary:
;; scrot is a Linux utility for taking screenshots.
;;; Code:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Dependencies
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(require 'f)
(require 'string)
(require 'ts)
(require 'clipboard)
(require 'kbd)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Library
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defconst scrot-screenshot-directory "~/Downloads"
"The default directory for screenshot outputs.")
(defconst scrot-path-to-executable "/usr/bin/scrot"
"Path to the scrot executable.")
(defconst scrot-output-format "screenshot_%H:%M:%S_%Y-%m-%d.png"
"The format string for the output screenshot file.
See scrot's man page for more information.")
(defun scrot--copy-image (path)
"Use xclip to copy the image at PATH to the clipboard.
This currently only works for PNG files because that's what I'm outputting"
(call-process "xclip" nil nil nil
"-selection" "clipboard" "-t" "image/png" path)
(message (string-format "[scrot.el] Image copied to clipboard!")))
(defun scrot-select ()
"Click-and-drag to screenshot a region.
The output path is copied to the user's clipboard."
(interactive)
(let ((screenshot-path (f-join scrot-screenshot-directory
(ts-format scrot-output-format (ts-now)))))
(make-process
:name "scrot-select"
:command `(,scrot-path-to-executable "--select" ,screenshot-path)
:sentinel (lambda (proc _err)
(when (= 0 (process-exit-status proc))
(scrot--copy-image screenshot-path))))))
(provide 'scrot)
;;; scrot.el ends here