Hi All, Please review this software changes for the enhancement JDK-8178361.

 

Issue: Request was filed to enable the touch event processing for Java client 
applications.

 

Fix: Windows platform offers 'pointer' implementation thro' which one can tap 
for the touch inputs as well. A typical 'pointer' function may contain touch, 
pen, touch pad or mouse inputs. This allows for a uniform input processing 
though the event source may defer. This fix enables the 'touch' events(via 
TOUCH pointer) to be passed to the components using the other type of pointer 
'mouse'. Essentially there is a conversion put in place to convert a touch 
event input into a left click mouse event. I think this is the right thing to 
do considering desktop scenarios to which the typical Java applications that 
gets exposed to. This is also the same behavior on my touch enabled windows 10 
laptop as well. Please let me know if a different behavior is expected. Below 
is the output:



Now touch event works as a typical mouse left click as in general. But there is 
an issue because the icon size of the Java UI is typically small, touching that 
icon exactly is sometimes difficult. This is handled by an Windows application 
by having larger icon size or icon view as a standard. Hence I believe this is 
outside the scope this software update. Any changes to it would be done later 
as a new bug or an enhancement.

 

Bug ID: https://bugs.openjdk.java.net/browse/JDK-8178361

 

Webrev: http://cr.openjdk.java.net/~sveerabhadra/8178361/webrev.00/

 

Thanks and regards,

Shashi

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