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input: Be more careful with pointer surface coordinates 

Whether these coordinates are "invalid" (set to an unlikely sentinel value)
or not is based purely on whether pointer->view is valid.

Check pointer->view before using these values every time, and stop
using an "invalid" value entirely.

The reason for this is that in the future we're reworking how 2D
coordinates are handled, and removing the dubious conecept of an invalid
coordinate simplifies things a little.

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
This commit is contained in:
Derek Foreman 2022-10-31 12:38:02 -05:00 committed by Pekka Paalanen
parent 4d141a7881
commit 9b5a525a3d
1 changed files with 10 additions and 14 deletions
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24
libweston/input.c
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@ -540,18 +540,21 @@ weston_pointer_send_motion(struct weston_pointer *pointer,
struct weston_pointer_motion_event *event)
{
wl_fixed_t x, y;
wl_fixed_t old_sx = pointer->sx;
wl_fixed_t old_sy = pointer->sy;
wl_fixed_t old_sx;
wl_fixed_t old_sy;
if (pointer->focus) {
weston_pointer_motion_to_abs(pointer, event, &x, &y);
old_sx = pointer->sx;
old_sy = pointer->sy;
weston_view_from_global_fixed(pointer->focus, x, y,
&pointer->sx, &pointer->sy);
}
weston_pointer_move(pointer, event);
if (old_sx != pointer->sx || old_sy != pointer->sy) {
if (pointer->focus &&
(old_sx != pointer->sx || old_sy != pointer->sy)) {
pointer_send_motion(pointer, time,
pointer->sx, pointer->sy);
}
@ -1244,9 +1247,6 @@ weston_pointer_create(struct weston_seat *seat)
wl_signal_add(&seat->compositor->output_destroyed_signal,
&pointer->output_destroy_listener);
pointer->sx = wl_fixed_from_int(-1000000);
pointer->sy = wl_fixed_from_int(-1000000);
return pointer;
}
@ -1452,9 +1452,6 @@ weston_pointer_set_focus(struct weston_pointer *pointer,
if (!weston_view_takes_input_at_point(view, ix, iy))
weston_log("View focused with external coordinate %d, %d\n",
ix, iy);
} else {
sx = wl_fixed_from_int(-1000000);
sy = wl_fixed_from_int(-1000000);
}
if ((!pointer->focus && view) ||
@ -1516,11 +1513,10 @@ weston_pointer_set_focus(struct weston_pointer *pointer,
pointer->focus = view;
pointer->focus_view_listener.notify = pointer_focus_view_destroyed;
pointer->sx = sx;
pointer->sy = sy;
assert(view || sx == wl_fixed_from_int(-1000000));
assert(view || sy == wl_fixed_from_int(-1000000));
if (view) {
pointer->sx = sx;
pointer->sy = sy;
}
wl_signal_emit(&pointer->focus_signal, pointer);
}