procyberian/emacs
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Coalesce pinch gestures in the keyboard buffer

Browse source 
* src/keyboard.c (kbd_buffer_get_event): Coalesce consecutive
pinch gesture events.
This commit is contained in:
Po Lu 2021-12-26 19:36:18 +08:00
parent 97133fb3d0
commit deab5f413f
1 changed files with 36 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
src/keyboard.c
View file

@ -4037,6 +4037,42 @@ kbd_buffer_get_event (KBOARD **kbp,
and build a real event from the queue entry. */
if (NILP (obj))
{
/* Pinch events are often sent in rapid succession, so
large amounts of such events have the potential to
queue up inside the keyboard buffer. In that case,
find the last pinch event in succession on the same
frame with the same modifiers, and send that instead. */
if (event->ie.kind == PINCH_EVENT
/* Ignore if this is the start of a pinch sequence.
These events should always be sent so that we
never miss a sequence starting, and they don't
have the potential to queue up. */
&& (XFLOAT_DATA (XCAR (event->ie.arg)) != 0.0
|| XFLOAT_DATA (XCAR (XCDR (event->ie.arg))) != 0.0
|| XFLOAT_DATA (XCAR (XCDR (XCDR (event->ie.arg)))) != 1.0))
{
union buffered_input_event *maybe_event = next_kbd_event (event);
while (maybe_event != kbd_store_ptr
&& maybe_event->ie.kind == PINCH_EVENT
/* Make sure we never miss an event that has
different modifiers. */
&& maybe_event->ie.modifiers == event->ie.modifiers
/* Make sure that the event is for the same
frame. */
&& EQ (maybe_event->ie.frame_or_window,
event->ie.frame_or_window)
/* Make sure that the event isn't the start
of a new pinch gesture sequence. */
&& (XFLOAT_DATA (XCAR (maybe_event->ie.arg)) != 0.0
|| XFLOAT_DATA (XCAR (XCDR (maybe_event->ie.arg))) != 0.0
|| XFLOAT_DATA (XCAR (XCDR (XCDR (maybe_event->ie.arg)))) != 1.0))
{
event = maybe_event;
maybe_event = next_kbd_event (event);
}
}
obj = make_lispy_event (&event->ie);
#ifdef HAVE_EXT_MENU_BAR