[ale] [OT] Making Emacs transparent in Cywgin

[Lightner, Jeff]

I’d say Cygwin IS on topic for LInux – it just runs the Linux (or for the pedantic GNU utilities for Linux) install under Windoze without requiring a dual boot setup.

From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Jonathan Meek
Sent: Thursday, October 31, 2013 11:45 AM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] [OT] Making Emacs transparent in Cywgin

I understand that but also keep in mind that this trick will actually work for linux as well. This is why I flagged my message as OT since I knew it wasn't directly Linux but thought it might help someone else down the road. Some of us are stuck working in Windoze world and it is helpful to try to bring some of the comforts of Linux into our workplace as much as possible.

On Thu, Oct 31, 2013 at 11:27 AM, Michael Trausch <mbt at naunetcorp.com<mailto:mbt at naunetcorp.com>> wrote:
When did Cygwin get ported to run on Linux? ;-)

Sent from my iPhone

On Oct 31, 2013, at 10:21 AM, Jonathan Meek <jonathan.l.meek at gmail.com<mailto:jonathan.l.meek at gmail.com>> wrote:

Hey guys,

Came across a way to make Emacs transparent in Cywgin after a bit of research and wanted to share.

1) start up Emacs
2) Add the following code to the buffer:

         (defun djcb-opacity-modify (&optional dec)
  "modify the transparency of the emacs frame; if DEC is t,
    decrease the transparency, otherwise increase it in 10%-steps"
  (let* ((alpha-or-nil (frame-parameter nil 'alpha)) ; nil before setting
          (oldalpha (if alpha-or-nil alpha-or-nil 100))
          (newalpha (if dec (- oldalpha 10) (+ oldalpha 10))))
    (when (and (>= newalpha frame-alpha-lower-limit) (<= newalpha 100))
      (modify-frame-parameters nil (list (cons 'alpha newalpha))))))

 ;; C-8 will increase opacity (== decrease transparency)
 ;; C-9 will decrease opacity (== increase transparency
 ;; C-0 will returns the state to normal
(global-set-key (kbd "C-8") '(lambda()(interactive)(djcb-opacity-modify)))
(global-set-key (kbd "C-9") '(lambda()(interactive)(djcb-opacity-modify t)))
(global-set-key (kbd "C-0") '(lambda()(interactive)
                               (modify-frame-parameters nil `((alpha . 100)))))

3) save the file (C-x C-s) at ~/emacs.d/init.el
4) restart Emacs

Note: this sets that C-8 decrease transparency, C-9 to increase transparency and C-0 to set to normal

Resources to make this guide:
http://emacs-fu.blogspot.com/2009/02/transparent-emacs.html
http://www.cs.colostate.edu/helpdocs/emacs.html
http://www.emacswiki.org/emacs/InitFile

Regards,

Jonathan




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