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Do not queue up mouse wheel scroll events while others are still processing

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This commit is contained in:
Josh Holtrop 2017-10-14 11:52:27 -04:00
parent 5e40c33eda
commit c2323f4397
1 changed files with 18 additions and 0 deletions
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18
src/gui/jtk/Jtk_event.cc
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@ -276,6 +276,15 @@ static bool ProcessXKeyReleaseEvent(XEvent * x_event, Jtk_Event * event)
return false;
}
static Bool MatchButtonPress(Display * display, XEvent * event, XPointer arg)
{
XEvent * match_event = (XEvent *)arg;
return (event->type == match_event->type) &&
(event->xbutton.window == match_event->xbutton.window) &&
(event->xbutton.state == match_event->xbutton.state) &&
(event->xbutton.button == match_event->xbutton.button);
}
/**
* Process an X button press event.
*/
@ -283,6 +292,15 @@ static bool ProcessXButtonPressEvent(XEvent * x_event, Jtk_Event * event)
{
event->type = JTK_EVENT_BUTTON_PRESS;
event->button.button = x_event->xbutton.button;
/* If this is a mouse wheel scroll event, remove any following scroll
* events. */
if ((event->button.button == 4) || (event->button.button == 5))
{
XEvent remove_event;
while (XCheckIfEvent(g_display, &remove_event, MatchButtonPress, (XPointer)x_event) == True)
{
}
}
return true;
}