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Re: Slight softening of language in the note for 5.1.2

From: Patrick H. Lauke <redux@splintered.co.uk>
Date: Sun, 23 Feb 2014 23:15:44 +0000
Message-ID: <530A8120.3060909@splintered.co.uk>
To: public-pointer-events@w3.org
Turns out I was drawing the wrong conclusions from one of my tests 
(though this points to potential need for clarification elsewhere in the 
spec). I was basing my initial assumption on 
- if you try using both a finger on a touchscreen and a mouse, you'll 
see how the circle that's drawn flip/flops between the two positions. 
The only events I'm binding to here are traditional mouse events, but 
the whole canvas has touch-action:none.

However, as I wanted to make sure, I've now modified another little 
experiment of mine, 
- any pointer that has isPrimary set receives an additional circle 
outline ... and with this, I *do* see that both the first finger AND the 
mouse pointer are primary.

So, disregard my initial misgivings about the language used in the note 
for 5.1.2. However, this raises the question if the spec should say 
anything about compatibility mouse events in the presence of more than 
one pointer that has the isPrimary flag set? It's probably implied 
currently that if there are two or more primary pointers, both will fire 
mouse events as well...but perhaps it's worth spelling out with a tiny 
note in section 11?


In the case where there are multiple <a href="...">primary pointers</a>, 
these pointer will all produce compatibility mouse events."


Patrick H. Lauke

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Received on Sunday, 23 February 2014 23:16:10 UTC

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