Changing height to fit window

Changing height to fit window

[Heime]

One can C-x C-+ and C-x C-- to call text-scale-adjust, 
which increases or decreases the buffer text size, with
C-+ or C-- to repeat.

Instead of repeating, I want to have a function that adjusts
the scale so that the contents of the buffer fit the window,
based on the longest line.  What can I do?

RE: [External] : Changing height to fit window

[Drew Adams]

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> One can C-x C-+ and C-x C-- to call text-scale-adjust,
> which increases or decreases the buffer text size, with
> C-+ or C-- to repeat.
> 
> Instead of repeating, I want to have a function that adjusts
> the scale so that the contents of the buffer fit the window,
> based on the longest line.  What can I do?

Dunno whether this corresponds to what you're
asking, but library `face-remap+.el' adjusts
the frame/window size to the scaled text size,
when option `text-scale-resize-window' is non-nil.

The particular non-nil value controls whether
the window-fitting is horizontally, vertically,
or both.

;; URL: https://www.emacswiki.org/emacs/download/face-remap%2b.el
;; Doc URL: https://emacswiki.org/emacs/SetFonts


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RE: [External] : Changing height to fit window

[Heime]

------- Original Message -------
On Tuesday, November 29th, 2022 at 10:58 PM, Drew Adams <drew.adams@oracle.com> wrote:


> > One can C-x C-+ and C-x C-- to call text-scale-adjust,
> > which increases or decreases the buffer text size, with
> > C-+ or C-- to repeat.
> > 
> > Instead of repeating, I want to have a function that adjusts
> > the scale so that the contents of the buffer fit the window,
> > based on the longest line. What can I do?
> 
> 
> Dunno whether this corresponds to what you're
> asking, but library `face-remap+.el' adjusts the frame/window size to the scaled text size, when option` text-scale-resize-window' is non-nil.

I want the opposite - given a window size, fit things in there with one call.
 
> The particular non-nil value controls whether
> the window-fitting is horizontally, vertically,
> or both.
> 
> ;; URL: https://www.emacswiki.org/emacs/download/face-remap%2B.el
> ;; Doc URL: https://emacswiki.org/emacs/SetFonts

Re: Changing height to fit window

[Eli Zaretskii]

> Date: Tue, 29 Nov 2022 20:37:03 +0000
> From: Heime <heimeborgia@protonmail.com>
> 
> 
> One can C-x C-+ and C-x C-- to call text-scale-adjust, 
> which increases or decreases the buffer text size, with
> C-+ or C-- to repeat.
> 
> Instead of repeating, I want to have a function that adjusts
> the scale so that the contents of the buffer fit the window,
> based on the longest line.  What can I do?

Ask Emacs about the pixel-height of the text, then compute the scale you
need to make that the same as the pixel-height of the window's body.

Caveat: when you change the font size, some lines could take more or fewer
lines on the screen (due to wrapping) and disrupt your calculations.
Dealing with that is left as an exercise.

Re: Changing height to fit window

[Heime]

------- Original Message -------
On Wednesday, November 30th, 2022 at 12:23 PM, Eli Zaretskii <eliz@gnu.org> wrote:


> > Date: Tue, 29 Nov 2022 20:37:03 +0000
> > From: Heime heimeborgia@protonmail.com
> > 
> > One can C-x C-+ and C-x C-- to call text-scale-adjust,
> > which increases or decreases the buffer text size, with
> > C-+ or C-- to repeat.
> > 
> > Instead of repeating, I want to have a function that adjusts
> > the scale so that the contents of the buffer fit the window,
> > based on the longest line. What can I do?
> 
> Ask Emacs about the pixel-height of the text, then compute the scale you
> need to make that the same as the pixel-height of the window's body.

Are you discussing line-pixel-height and window-pixel-height ?
 
> Caveat: when you change the font size, some lines could take more or fewer
> lines on the screen (due to wrapping) and disrupt your calculations.
> Dealing with that is left as an exercise.

Re: Changing height to fit window

[Eli Zaretskii]

> Date: Wed, 30 Nov 2022 14:40:20 +0000
> From: Heime <heimeborgia@protonmail.com>
> Cc: help-gnu-emacs@gnu.org
> 
> > > Instead of repeating, I want to have a function that adjusts
> > > the scale so that the contents of the buffer fit the window,
> > > based on the longest line. What can I do?
> > 
> > Ask Emacs about the pixel-height of the text, then compute the scale you
> > need to make that the same as the pixel-height of the window's body.
> 
> Are you discussing line-pixel-height and window-pixel-height ?

No, I thought about window-text-pixel-size and window-body-height.