Using xev -event mouse I get the following using a standard usb mouse:
ButtonPress event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x1c00002, time 4111605, (42,48), root:(700,375),
state 0x10, button 1, same_screen YES
EnterNotify event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x0, time 4111605, (42,48), root:(700,375),
mode NotifyGrab, detail NotifyInferior, same_screen YES,
focus YES, state 272
ButtonRelease event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x1c00002, time 4112907, (42,48), root:(700,375),
state 0x110, button 1, same_screen YES
LeaveNotify event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x0, time 4112907, (42,48), root:(700,375),
mode NotifyUngrab, detail NotifyInferior, same_screen YES,
focus YES, state 16
LeaveNotify event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x1c00002, time 4118097, (42,48), root:(700,375),
mode NotifyGrab, detail NotifyVirtual, same_screen YES,
focus YES, state 24
And I get the following using a touch screen
ButtonPress event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x1c00002, time 4190526, (42,37), root:(465,331),
state 0x10, button 1, same_screen YES
EnterNotify event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x0, time 4190526, (42,37), root:(465,331),
mode NotifyGrab, detail NotifyInferior, same_screen YES,
focus YES, state 16
MotionNotify event, serial 25, synthetic NO, window window 0x1c00001,
root 0x103, subw 0x0, time 4190663, (42,37), root:(465,331),
state 0x110, is_hint 0, same_screen YES
ButtonRelease event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x1c00002, time 4190663, (42,37), root:(465,331),
state 0x110, button 1, same_screen YES
LeaveNotify event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x0,time 4190663, (42,37), root:(465,331),
mode NotifyUngrab, detail NotifyInferior, same_screen YES,
focus YES, state 16
LeaveNotify event, serial 25, synthetic NO, window 0x1c00001,
root 0x103, subw 0x1c00002, time 4192544, (42,37), root:(465,331),
mode NotifyGrab, detail NotifyVirtual, same_screen YES,
focus YES, state 24