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Shuzheng
Shuzheng

Reputation: 13996

How do I install zoom-frm.el in Emacs to get zoom by mouse-wheel?

How do I install zoom-frm.el in Emacs to get zoom by mouse-wheel?

I want to install zoom-frm.el to Emacs, so I've downloaded the file and placed it inside .emacs.d.

Now the file says to place (require 'zoom-frm) inside init.el, however I get the error message "Cannot open file or directory zoom-frm".

Can someone provide some details on how to install this "addon" and set it up for proper behaviour to a novice?

Thanks,

Upvotes: 2

Views: 653

Answers (1)

Drew
Drew

Reputation: 30708

  1. Put the library (file zoom-frm.el) and any libraries it requires (look in the file for "(require") inside a folder (directory) that is in your load-path.

    The libraries required by zoom-frm.el are: frame-cmds.el and frame-fns.el. zoom-frm.el requires frame-cmds.el and frame-cmds.el requires frame-fns.el. Put all three libraries in a folder that is in your load-path.

    (Library frame-cmds.el can also make use of libraries strings.el and misc-fns.el, but they are not strictly required. Their (require...) expressions end in nil t), which means that these libraries are "soft-required": nice to have but not strictly required.)

  2. Put (require 'zoom-frm) in your init file, after the part of your init file where you define your load-path.

  3. To get mouse-wheel zooming, follow the instructions in zoom-frm.el:

    (define-key ctl-x-map [(control ?+)] 'zoom-in/out)
(define-key ctl-x-map [(control ?-)] 'zoom-in/out)
(define-key ctl-x-map [(control ?=)] 'zoom-in/out)
(define-key ctl-x-map [(control ?0)] 'zoom-in/out)
(global-set-key (vector (list 'control mouse-wheel-down-event)) 'zoom-in)
(global-set-key (vector (list 'control mouse-wheel-up-event))   'zoom-out))
(global-set-key [S-mouse-1]    'zoom-in)
(global-set-key [C-S-mouse-1]  'zoom-out)
;; Get rid of `mouse-set-font' or `mouse-appearance-menu':
(global-set-key [S-down-mouse-1] nil)

See the Emacs manual, node Load Libraries for more information, including about load-path. You owe it to yourself to become familiar with this information, as it is basic information about requiring (loading) any library.

You can also install zoom-frm.el using the Emacs package system with MELPA.

Upvotes: 1

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