We’re using floating point math, as a way to ensure that sextant primitives
overlap, rather than leaving empty spaces, or being uneven, when the cell
width/height isn’t divisible with 2 (width) or 3 (height).
This gets rid of all floating point math from the sextant drawing functions.
That is, encode which “pieces” make up each quad in a static array, and use a
single function to draw all quads using the four primitives “upper left/right,
lower left/right”.
We render the inverted wedges by first rendering a non-inverted triangle, and
then inverting it with PIXMAN_OP_OUT.
In cases where truncating and round():ing the triangle points have different
results, the final, inverted wedge ends up being unaligned with the
corresponding sixel(s).
This patch fixes that by handling the pre-inverted triangles
specifically. I.e. we don’t re-use the same triangle coordinates as the
corresponding non-inverted triangle.
When the foot window is closed, and we need to terminate the client application,
do this in an asynchronous fashion:
* Don’t do a blocking call to waitpid(), instead, rely on the reaper callback
* Use a timer FD to implement the timeout before sending SIGKILL (instead of
using SIGALRM).
* Send SIGTERM immediately (we used to *just* close the PTY, and then wait 2
seconds before sending SIGTERM).
* Raise the timeout from 2 seconds to 60
Full shutdown now depends on *two* asynchronous tasks - unmapping the window,
and waiting for the client application to terminate.
Only when *both* of these have completed do we proceed and call term_destroy(),
and the user provided shutdown callback.
If the call to fdm_wayl() with EPOLLHUP was followed by calls to
wayl_roundtrip(), foot would hang.
The reason for this is that the EPOLLHUP handler in fdm_wayl() would
call wl_display_cancel_read().
wayl_roundtrip() also calls wl_display_cancel_read() (since we
normally have called wl_display_prepare_read()), before calling
wl_display_roundtrip().
When calling wl_display_cancel_read() two times in a row, without a
wl_display_prepare_read() in between, wl_display_roundtrip() hangs.
Fix by not calling wl_display_cancel_read() in fdm_wayl(). This
ensures our invariant holds: wl_display_prepare_read() is *always* in
effect outside of fdm_wayl().
Closes#651
We still use the primary font, but use a custom size, based on the
title bar’s height.
This fixes an issue where the window title could be way too small, or
way too big. And changed size when the terminal font size was changed.
