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st-button: Ignore pointer emulated touch events

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In X11, pointer emulated touch events are replicated with normal PRESS, RELEASE
pair events which are generated by the server. Thus for a single tap we get:
 - TOUCH_BEGIN -> TOUCH_END, PRESS -> RELEASE

This will cause st-button to send two "clicked" signals, instead of just one,
breaking extensions (like dash-to-dock) that show buttons in the main stage
which will be checked two times or that will receive the same signal two times.


(cherry picked from commit 4c11d15a07)
This commit is contained in:
Marco Trevisan (Treviño) 2018-10-25 04:35:25 +00:00 • committed by Marco Trevisan
parent f645368c66
commit 5246da5837
1 changed files with 5 additions and 2 deletions
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7
src/st/st-button.c
View file

@ -248,14 +248,17 @@ st_button_touch_event (ClutterActor *actor,
if (event->type == CLUTTER_TOUCH_BEGIN && !priv->press_sequence)
{
clutter_input_device_sequence_grab (device, sequence, actor);
st_button_press (button, device, 0, sequence);
if (!clutter_event_is_pointer_emulated ((ClutterEvent*) event))
st_button_press (button, device, 0, sequence);
return CLUTTER_EVENT_STOP;
}
else if (event->type == CLUTTER_TOUCH_END &&
priv->device == device &&
priv->press_sequence == sequence)
{
st_button_release (button, device, mask, 0, sequence);
if (!clutter_event_is_pointer_emulated ((ClutterEvent*) event))
st_button_release (button, device, mask, 0, sequence);
clutter_input_device_sequence_ungrab (device, sequence);
return CLUTTER_EVENT_STOP;
}