[whatwg] api for fullscreen()

Kenneth Russell kbr at google.com
Mon Feb 1 11:45:15 PST 2010

On Mon, Feb 1, 2010 at 11:05 AM, Robert O'Callahan <robert at ocallahan.org> wrote:
> On Tue, Feb 2, 2010 at 7:39 AM, Kenneth Russell <kbr at google.com> wrote:
>> When you say that the DOM viewport of the element is aligned with the
>> screen when it goes fullscreen, does that mean that the .width and
>> .height properties are changed? Or does it mean that the element's
>> size is changed by a CSS style?
> The latter. The window's viewport is aligned with the screen bounds, and by
> default the element is styled with position:fixed; left:0; right:0; top:0;
> bottom:0, which resizes it in CSS to fill the viewport.
>> The case I'm thinking about is when a Canvas element is taken
>> fullscreen; on that element changing the .width and .height properties
>> changes the size of the backing store, but applying a CSS style to
>> change its width and height causes the backing store to be scaled to
>> fit. The desired behavior is for the backing store to be resized.
> The author would have to handle the beginfullscreen event and manually set
> the canvas width/height attributes, e.g. to
> getBoundingClientRect().width/height. I don't think we should change
> width/height attributes automatically, since that has the side effect of
> clearing the canvas.

OK, that sounds reasonable. Thanks.


> Rob
> --
> "He was pierced for our transgressions, he was crushed for our iniquities;
> the punishment that brought us peace was upon him, and by his wounds we are
> healed. We all, like sheep, have gone astray, each of us has turned to his
> own way; and the LORD has laid on him the iniquity of us all." [Isaiah
> 53:5-6]

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