The fit function is called twice in row.
- The first time it gets the maximum available width, and returns how
much of it it needs (with 0 spacing it would be 477)
- The second time the available width it gets is the same as it returned
last phase (and probably is expected to return the same result again)
The width fit requests is the total width of all widgets together + the
spacing (e.g. if each tag widget is 53 px and spacing is -10 then the
requested width 53 * 9 - 80).
The function tries to first fit all its widgets (the tag numbers) in the
amount of width it received, and only then adds the spacing to it. This
is problematic because in the second phase the widgets need to fit
themselves in the same width they requested earlier minus the spacing
(in case of negative spacing). This is of course impossible and so some
widgets are just not being drawn correctly.
This patch makes fit function take into account the spacing while
placing the widgets and not afterwards.
Also add unit-testing that test the bug described.
Signed-off-by: Shay Agroskin <agrosshay@gmail.com>
It is not possible to distribute 100px to three widgets equally. The
current version of wibox.layout.flex tries to do that anyway, by giving
each widget 33px and leaving one pixel outside of any widget. Thus, if
the widgets e.g. have a common background, this leads to a one pixel gap
in the background.
This patch changes the flex layout so that the extra pixel is assigned
to some widget instead. It does so by basically keeping a sum of
space_per_item for the widgets that was assigned so far. This sum is
rounded and when this leads to rounding, the corresponding child widget
gets an extra pixel.
More precisely, this tracks a pos as before. Widgets get their position
still assigned based on rounding pos. However, this now also remembers
this rounded position for the next iteration of the loop. This allows to
assign the size of widgets based on the difference between the current
and last rounded position.
(Possibly) fixes: https://github.com/awesomeWM/awesome/issues/2461
Signed-off-by: Uli Schlachter <psychon@znc.in>
After this change, fit_widget() enforces that a widget cannot ask for more space
than was offered to it. This also fixes a rounding issue in the flex layout
where its fit function would return too small numbers.
Thanks to this, lots of "XXX" comments in spec/ disappear.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This uses busted (http://olivinelabs.com/busted/) to implement unit testing.
This is wired up to "make check" and/or "make test".
This commit also adds tests for the more complicated parts of the gears and
wibox.layout libraries.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Shay Agroskin
Lucas Schwiderski
Uli Schlachter