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From: Bruno Barbier <brubar.cs@gmail.com>
To: pareto optimal <pareto.optimal@mailfence.com>,
	Emacs Orgmode <emacs-orgmode@gnu.org>
Subject: Re: RFC on implementation adding buttons beside headings
Date: Mon, 20 Feb 2023 20:17:20 +0100	[thread overview]
Message-ID: <63f3c742.df0a0220.58f3d.75fe@mx.google.com> (raw)
In-Reply-To: <418353827.205931.1676736087884@fidget.co-bxl>

pareto optimal <pareto.optimal@mailfence.com> writes:

> I found the only way to place the button where I wanted was to insert
> some blank space after the heading. Is that expected and best practice
> or is there some other way to do it?

FWIW, instead of inserting some blank spaces, you could overlay existing
characters, you'll just need to re-inject them at display time so that
the display doesn't change. That way, you don't modified the text.


Here is a way to add a button, in place, without modifying the
buffer.  The trick is to overlay the EOL and to re-inject an EOL
using the "after-string" property.


     (with-current-buffer (generate-new-buffer "=test")
       (cl-flet ((run (f) (lambda (&rest args) (interactive) (funcall f))))
         (let (pos)
           (insert "* My title\n")
           (setq pos (1- (point)))
           (insert "An amazing note.\n\n")
           (insert "** My 2 title\n")
           (insert "An even more amazing note.\n")
           (org-mode)
           (make-button pos (1+ pos)
                        'before-string "\n\n    "
                        'display '((height 2) "Click me!")
                        'after-string "\n\n"
                        'face 'custom-button
                        'action (run (lambda () (message "Thanks!")))
                        )))
       (pop-to-buffer (current-buffer))
       )
       
Note that the above expression requires lexical-binding.


Bruno

next prev parent reply	other threads:[~2023-02-20 19:18 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-18 16:00 RFC on implementation adding buttons beside headings pareto optimal
2023-02-18 16:01 ` pareto optimal
2023-02-20 19:17   ` Bruno Barbier [this message]
2023-02-19 11:04 ` Ihor Radchenko
2023-02-19 22:57   ` Samuel Wales
     [not found]   ` <292424133.47705.1676856972523@fidget.co-bxl>
2023-02-20 13:23     ` Ihor Radchenko

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