Add Grid Layout

[dumblob]

Any plans to make this arbitrarily reshapeable in runtime? E.g.:

a	b	c
m	n	o
p	q	r
x	y	z

->

a	c
m	o
p	r
x	z
b	n	q	y

And any swaps of arbitrary row/column with arbitrary row/column. Also any insertion of arbitrary-length row/column:

a	b	c
d	e	f
x	y	z

-> (e.g. insert an array of Widgets m, n, o but not as a row but rather as a column and - to make it more capable - in a reversed fashion starting at the position of e)

a	b	c
d	o	e	f
x	n	y	z
	m

It seems the foundation is there (it is a generic map[string]Widget) but I am not sure about the envisioned capabilities as my experience with grid APIs can be mostly described as horrible :wink:.

[rcqls]

Any plans to make this arbitrarily reshapeable in runtime? E.g.:

a b c m n o p q r x y z ->

a c   m o
p r
x z
b n q y And any swaps of arbitrary row/column with arbitrary row/column. Also any insertion of arbitrary-length row/column:

a b c d e f x y z -> (e.g. insert an array of Widgets m, n, o but not as a row but rather as a column and - to make it more capable - in a reversed fashion starting at the position of e)

a b c   d o e f x n y z   m
It seems the foundation is there (it is a generic map[string]Widget) but I am not sure about the envisioned capabilities as my experience with grid APIs can be mostly described as horrible 😉.

Everything is indeed possible but not implemented yet for Stack. The grid_layout I have in mind is for locating every widget by giving its relative coordinates and size in a 100x100 grid (that can be viewed as a matrix). Also relative coordinates and sizes would be expressed in percentage of the size of the GridLayout With this specific layout, I guess it would be even easier to apply the transforms you investigate.

[rcqls]

After addition of a lot of PR and just after clipping PR from @edam, I prefer create a new PR #501