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Re: [pointerevents] Add OS image dragging to non-normative reasons for pointercancel

From: Navid Zolghadr via GitHub <sysbot+gh@w3.org>
Date: Wed, 10 May 2017 15:46:38 +0000
To: public-pointer-events@w3.org
Message-ID: <issue_comment.created-300525295-1494431197-sysbot+gh@w3.org>
I personally don't think delaying pointercancel until after dragend is the right approach. It is the same as saying delaying pointercancel until the scrolling is finished.
I don't know why it matters whether drag is canceled or not. The stream of input was interrupted for some amount of time during the drag and pointercancel should have been sent before right before that interruption.
I noted that your use case for counting how many fingers are down is also flawed. You cannot rely on the pairing of the events at all. You may receive a pointerup without receiving a pointerdown and vice versa.

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Received on Wednesday, 10 May 2017 15:46:45 UTC

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