missing l3box counterparts of graphics' \resizebox variants

[Alexander Grahn]

Hello,

some of the possible `\resizebox` usages don't map to corresponding
l3box functions.

In particular, I am looking for

\resizebox{<h-size>}{<v-size>}

and

\resizebox{!}{<v-size>}

The first one resizes width and height of the original box to the provided
<h-size> and <v-size> values and the second one only the height, while
maintaining the original aspect ratio of the box content.

The existing \box_resize:Nnn resizes width and totalheight, but I am
looking for resizing width and height.

There is a \box_resize_to_ht_plus_dp:Nn, but \box_resize_to_ht:Nn is
missing.

Could they be provided in a future l3box version?

Thanks and kind regards,
Alexander

[Will Robertson]

Post by Alexander Grahn
The existing \box_resize:Nnn resizes width and totalheight, but I am
looking for resizing width and height.
There is a \box_resize_to_ht_plus_dp:Nn, but \box_resize_to_ht:Nn is
missing.

Hi Alexander,

I’ve added this function to l3candidates for consideration — it sounds like a sensible request to me.

Cheers,
Will

[Alexander Grahn]

Post by Will Robertson

Post by Alexander Grahn
The existing \box_resize:Nnn resizes width and totalheight, but I am
looking for resizing width and height.
There is a \box_resize_to_ht_plus_dp:Nn, but \box_resize_to_ht:Nn is
missing.

Hi Alexander,
I’ve added this function to l3candidates for consideration — it sounds like a sensible request to me.

Thanks, Will.

The direct l3 counterpart of

\resizebox{<h-size>}{<v-size>}

is missing too, since

\box_resize:Nnn<box>{<h-size>}{<v-size>} is

actually

\resizebox*{<h-size>}{<v-size>}

that is, after resizing, the box' totalheight is set to <v-scale>,
thus, something like \box_resize_to_wd_and_ht:Nnn to set width and
height.

Regards,
Alexander.

Post by Will Robertson
Cheers,
Will

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Dr.-Ing. Alexander Grahn
Helmholtz-Zentrum Dresden-Rossendorf e. V.,
Institut für Ressourcenökologie
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[Joseph Wright]

Post by Alexander Grahn

Post by Will Robertson

Post by Alexander Grahn
The existing \box_resize:Nnn resizes width and totalheight, but I am
looking for resizing width and height.
There is a \box_resize_to_ht_plus_dp:Nn, but \box_resize_to_ht:Nn is
missing.

Hi Alexander,
I’ve added this function to l3candidates for consideration — it sounds like a sensible request to me.

Thanks, Will.
The direct l3 counterpart of
\resizebox{<h-size>}{<v-size>}
is missing too, since
\box_resize:Nnn<box>{<h-size>}{<v-size>} is
actually
\resizebox*{<h-size>}{<v-size>}
that is, after resizing, the box' totalheight is set to <v-scale>,
thus, something like \box_resize_to_wd_and_ht:Nnn to set width and
height.
Regards,
Alexander.

If we are having one here we should have the other: I'll add.

[Alexander Grahn]

Hi Joseph,

Post by Joseph Wright

Post by Alexander Grahn

Post by Will Robertson

Post by Alexander Grahn
The existing \box_resize:Nnn resizes width and totalheight, but I am
looking for resizing width and height.
There is a \box_resize_to_ht_plus_dp:Nn, but \box_resize_to_ht:Nn is
missing.

Hi Alexander,
I’ve added this function to l3candidates for consideration — it sounds like a sensible request to me.

Thanks, Will.
The direct l3 counterpart of
\resizebox{<h-size>}{<v-size>}
is missing too, since
\box_resize:Nnn<box>{<h-size>}{<v-size>} is
actually
\resizebox*{<h-size>}{<v-size>}
that is, after resizing, the box' totalheight is set to <v-scale>,
thus, something like \box_resize_to_wd_and_ht:Nnn to set width and
height.
Regards,
Alexander.

If we are having one here we should have the other: I'll add.

Thanks a lot for taking it into consideration.

Alexander

[Joseph Wright]

Post by Alexander Grahn
Hi Joseph,

Post by Joseph Wright

Post by Alexander Grahn

Post by Will Robertson

Post by Alexander Grahn
The existing \box_resize:Nnn resizes width and totalheight, but I am
looking for resizing width and height.
There is a \box_resize_to_ht_plus_dp:Nn, but \box_resize_to_ht:Nn is
missing.

Hi Alexander,
I’ve added this function to l3candidates for consideration — it sounds like a sensible request to me.

Thanks, Will.
The direct l3 counterpart of
\resizebox{<h-size>}{<v-size>}
is missing too, since
\box_resize:Nnn<box>{<h-size>}{<v-size>} is
actually
\resizebox*{<h-size>}{<v-size>}
that is, after resizing, the box' totalheight is set to <v-scale>,
thus, something like \box_resize_to_wd_and_ht:Nnn to set width and
height.
Regards,
Alexander.

If we are having one here we should have the other: I'll add.

Thanks a lot for taking it into consideration.
Alexander

This will be in the next release. Three questions:

1. Is this urgent (I can do a release if required)?
2. Does it still make sense to have the 'basic' function
as equivalent to "wd_and_ht_plus_dp", and if so do
we need the latter as a equivalent 'systematic' function?
3. Are these more complex possibilities needed for \coffins_...?
(Currently there is only \coffin_resize:Nnn.)

[David Carlisle]

Post by Joseph Wright
3. Are these more complex possibilities needed for \coffins_...?
(Currently there is only \coffin_resize:Nnn.)

I suspect not, a classic box just has three associated lengths so that
pretty much determines
the "packaged" resize combinations.

But for a coffin the equivalent of height/depth is really the y
coordinates of any handle
relative to the total height; and width similarly can be split by the x
coordinate of any handle
thus I think there are too many possibilities to wrap these in simple
named commands and the caller
will need to calculate the scale factors required.

David

[Joseph Wright]

Post by David Carlisle

Post by Joseph Wright
3. Are these more complex possibilities needed for \coffins_...?
(Currently there is only \coffin_resize:Nnn.)

I suspect not, a classic box just has three associated lengths so that
pretty much determines
the "packaged" resize combinations.
But for a coffin the equivalent of height/depth is really the y
coordinates of any handle
relative to the total height; and width similarly can be split by the x
coordinate of any handle
thus I think there are too many possibilities to wrap these in simple
named commands and the caller
will need to calculate the scale factors required.
David

Good points and a handily defensible position :-)

[Alexander Grahn]

Post by Joseph Wright

Post by Alexander Grahn
Hi Joseph,

Post by Joseph Wright

Post by Alexander Grahn

Post by Will Robertson

Post by Alexander Grahn
The existing \box_resize:Nnn resizes width and totalheight, but I am
looking for resizing width and height.
There is a \box_resize_to_ht_plus_dp:Nn, but \box_resize_to_ht:Nn is
missing.

Hi Alexander,
I’ve added this function to l3candidates for consideration — it sounds like a sensible request to me.

Thanks, Will.
The direct l3 counterpart of
\resizebox{<h-size>}{<v-size>}
is missing too, since
\box_resize:Nnn<box>{<h-size>}{<v-size>} is
actually
\resizebox*{<h-size>}{<v-size>}
that is, after resizing, the box' totalheight is set to <v-scale>,
thus, something like \box_resize_to_wd_and_ht:Nnn to set width and
height.
Regards,
Alexander.

If we are having one here we should have the other: I'll add.

Thanks a lot for taking it into consideration.
Alexander

1. Is this urgent (I can do a release if required)?

As for me, there is no rush. I guess `graphics' will continue to be
loaded automatically by expl3 in the medium term. So, in my package,
I am using \resizebox directly for the missing cases.

Alexander

[Joseph Wright]

Post by Alexander Grahn
As for me, there is no rush. I guess `graphics' will continue to be
loaded automatically by expl3 in the medium term. So, in my package,
I am using \resizebox directly for the missing cases.
Alexander

You can certainly stick with graphicx, but note that we've switched the
driver code to default to 'native' mode. As a result, if you want
graphicx loaded you really should have the appropriate \RequirePackage line.

[Joseph Wright]

Post by Alexander Grahn
Hello,
some of the possible `\resizebox` usages don't map to corresponding
l3box functions.
In particular, I am looking for
\resizebox{<h-size>}{<v-size>}
and
\resizebox{!}{<v-size>}
The first one resizes width and height of the original box to the provided
<h-size> and <v-size> values and the second one only the height, while
maintaining the original aspect ratio of the box content.
The existing \box_resize:Nnn resizes width and totalheight, but I am
looking for resizing width and height.
There is a \box_resize_to_ht_plus_dp:Nn, but \box_resize_to_ht:Nn is
missing.
Could they be provided in a future l3box version?
Thanks and kind regards,
Alexander

I've not noted it down, but I think the reason I went for just 'total
height' functions here is that the end result then has a dimension (or
dimensions) that are explicit in the code. Something like

\box_resize_to_ht:Nn

gives you a box that is not necessarily the vertical size you've put
into your code, which could be regarded as a bit odd. (It's also doable
by viewing this operation as a scaling to ht_new/ht_old.) Of course,
this might just be me: one reason these are in the 'candidates' part of
l3kernel is they've not been discussed a lot, so some feedback is almost
certainly required.