Re: Mouse Capture for Canvas

On Thu, Feb 10, 2011 at 5:32 PM, Glenn Maynard <glenn@zewt.org> wrote:

> It applies to non-game uses, too.  For example, a common annoyance with
> Google Maps is when you're dragging the map and your mouse cursor hits the
> side of the screen, the map stops moving; you have to release the button and
> reposition the cursor.  Mouse grabbing would trivially fix this.
>

Sure, but this is not a use-case for capturing while the mouse button is up.

At least in Windows, it's hard to get deltas without grabbing the mouse.  If
> the mouse cursor is at the right edge of the screen and the user moves the
> mouse to the right, Windows doesn't report the motion--the clamping happens
> too early on.  Games work around this by hiding the mouse cursor and
> constantly warping the hidden cursor to the center of the screen, which is
> probably what browsers would do too.
>

Hmm, interesting. That might make things nasty indeed.

Rob
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