surface::click_through set a completely empty input region on the toast
so every pointer event passed through -- including to the toast's own
action buttons and inline-reply entry. Replace it with
surface::set_hit_region(window, widgets), which sets the input region to
the union of the given widgets' rectangles instead of empty; everywhere
else on the surface stays click-through exactly as before.
popup.rs recomputes this via refresh_hit_region every time the card set
could have changed (shown, dismissed, expired -- routed through the one
dismiss() function) and keeps recomputing every frame for HIT_TRACK_MS
afterward, since a card's own entrance animation or the stack's
push-down reflow can still be moving a button on the frame the change
happens. collect_interactive walks the real widget tree for
GtkButton/GtkEntry rather than tracking a flat list, so it can't drift
out of sync with make_card's structure. build_window's connect_map
handles the first-map race the same way surface::click_through used to.
Also: spring_in_card grows a newly shown card's height from 0 to its
natural size via bread_theme::anim::spring_to (same technique as
main.rs's animate_drawer_height), so the existing stack gets pushed
down smoothly instead of jumping.
KeyboardMode::None is unchanged on the toast; history.rs's OnDemand
mode is untouched.
Still to do: the actual dismiss button in make_card (this commit wires
the mechanism that will hit-test it, but no card has one yet).
3eada87c7d