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author | Dima Zavin <dima@android.com> | 2011-08-30 11:59:45 -0700 |
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committer | Dima Zavin <dima@android.com> | 2011-09-02 14:55:20 -0700 |
commit | bc29063bf4e2312133d91e211dfe9c86ee811489 (patch) | |
tree | 7bc5a29a8f1201e3af7ab25846398722e8b05dc3 /minui/minui.h | |
parent | 4daf48a10bcba1fa92b8b3564504b90807c72274 (diff) | |
download | bootable_recovery-bc29063bf4e2312133d91e211dfe9c86ee811489.zip bootable_recovery-bc29063bf4e2312133d91e211dfe9c86ee811489.tar.gz bootable_recovery-bc29063bf4e2312133d91e211dfe9c86ee811489.tar.bz2 |
minui: events: refactor event acquisition
Events are now delivered through a callback mechanism during
a call to ev_dispatch(). This will allow us to extend the events
code to handle other devices/fds, not just input. One such example
is the ability to process uevents.
During initialization, we provide an input callback to ev_init
that gets called when a new event is encountered during dispatch.
ev_get has been removed and replaced with ev_get_input() helper
function that can be called from inside the callback to attempt
to get an input event.
The existing client of ev_get in recovery has been split up such
that the input thread just calls ev_wait(); ev_dispatch(); and
the input_callback handles individual events by using the
ev_get_input() helper.
Change-Id: I24d8e71bd1533876b4ab1ae751ba200fea43c049
Signed-off-by: Dima Zavin <dima@android.com>
Diffstat (limited to 'minui/minui.h')
-rw-r--r-- | minui/minui.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/minui/minui.h b/minui/minui.h index 2284a33..5a4168c 100644 --- a/minui/minui.h +++ b/minui/minui.h @@ -45,9 +45,20 @@ unsigned int gr_get_height(gr_surface surface); // see http://www.mjmwired.net/kernel/Documentation/input/ for info. struct input_event; -int ev_init(void); +typedef int (*ev_callback)(int fd, short revents, void *data); + +int ev_init(ev_callback input_cb, void *data); void ev_exit(void); -int ev_get(struct input_event *ev, unsigned dont_wait); + +/* timeout has the same semantics as for poll + * 0 : don't block + * < 0 : block forever + * > 0 : block for 'timeout' milliseconds + */ +int ev_wait(int timeout); + +int ev_get_input(int fd, short revents, struct input_event *ev); +void ev_dispatch(void); // Resources |