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Re: Transformed Pointer Coordinates?

From: Robert O'Callahan <robert@ocallahan.org>
Date: Tue, 12 Feb 2013 15:42:37 +1300
Message-ID: <CAOp6jLbPGVb7NXtWiPfMtj6ubghUwkqDoqauPjJKLTTdEiBZgg@mail.gmail.com>
To: Boris Zbarsky <bzbarsky@mit.edu>
Cc: www-style@w3.org, public-fx@w3.org, public-pointer-events@w3.org
On Tue, Feb 12, 2013 at 2:40 PM, Boris Zbarsky <bzbarsky@mit.edu> wrote:

> On 2/11/13 7:56 PM, Robert O'Callahan wrote:
>
>> [Constructor(float x, float y)]
>> interface DOMPoint {
>>    attribute float x;
>>    attribute float y;
>> }
>>
>
> Should those perhaps be unrestricted?


I'd prefer not to since I think unrestricted floats would be hard for Web
developers to handle.


>  partial interface Node {
>>    DOMPoint convertPointFromNode(Node from, DOMPoint pt);
>>
>
> And if not, what should happen when overflow to Infinity happens here?
>

Probably just set to zero, like I suggested for singular results.

Oh, I forgot one more edge case:
7) If either 'from' or the destination node has no CSS box, return 0,0.

I suppose we could bite the bullet, make the floats unrestricted, and make
edge cases 6 and 7 return NaNs (and overflowing cases return infinities).
Anyone have an opinion on that?

Rob
-- 
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Received on Tuesday, 12 February 2013 02:43:11 GMT

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