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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.
This commit is contained in:
Marco Trevisan (Treviño) 2018-10-25 06:35:25 +02:00 committed by Marco Trevisan
parent 3217c10ff2
commit 4c11d15a07
1 changed files with 5 additions and 2 deletions
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7
src/st/st-button.c
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@ -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;
}