Re: grid widget (was Re: possible removal of GtkWrapBox)

[Havoc Pennington <hp pobox com>]

Oh, another thing to have is probably h-spacing and v-spacing for the
grid-wide space between rows and columns. For per-column or per-row
spacing you could use a margin or a spacer widget placed on that row
(?)

If not clear the idea of the exercise I was doing is to figure out how
you'd naturally describe a layout, say to another person, in logical
terms and without redundancy.

So examples of things I think you would not do if talking to a person
or just thinking logically include:
 * doing the pack_end widgets backward
 * positioning widgets using grid coordinates

One litmus test for "too much redundancy" is if you have to change two
lines to add or remove a widget. I think to put another widget on a
row or to add another row, you should be able to add one line of code
without changing other lines, at least in the typical case. Similarly
to remove a widget or row, you should just delete the corresponding
line of code.

GtkTable requires you to change both the table constructor (overall
table size) and _then_ possibly re-number a bunch of the other
children, so it epic fails this litmus test.

Another idea, the "cursor" thing could be done explicitly:

 GtkGridCursor cursor;
 gtk_grid_cursor_init(grid, &cursor, row=0);
 gtk_grid_add_row(grid, &cursor, child);

But it seems like extra typing for not much good reason.

Havoc