[Development] [QtQuick] Mouse/Touch handling from Qt CS

Alan Alpert 416365416c at gmail.com
Thu Jul 25 23:55:15 CEST 2013

On Thu, Jul 25, 2013 at 1:23 PM, Shawn Rutledge
<shawn.t.rutledge at gmail.com> wrote:
> On 25 July 2013 18:06, Alan Alpert <416365416c at gmail.com> wrote:
>> On Thu, Jul 25, 2013 at 1:14 AM, Rutledge Shawn
>> <Shawn.Rutledge at digia.com> wrote:
>>> On 24 Jul 2013, at 5:45 PM, Alan Alpert wrote:
>>>> Qt CS had a discussion on how to handle mouse and touch event
>>>> conflicts in QtQuick going forwards.
>>>> An interesting idea came up that the existing model might be
>>>> salvageable if we fix multi-cursor support.
>>> I suggested that idea 2 years ago, but I was told authoritatively at that time that realistically, Qt will never support multiple cursors, because the idea of a single cursor, single grab, single focus, etc. is so pervasive in Qt.
>> Two years ago, was capacitive multi-touch an essential feature for
>> UIs?
> Yes, it became an essential feature for mobile device UIs suddenly in
> 2007.  But the point is not whether or not to have multi-touch, but
> whether we can pretend that multi-touch and multi-mouse are the same
> thing.  I don't think we can because
> 1) it's the hard way to get there, due to Qt legacy

If you know an easy way then you need to tell me now ;)

> 2) the use cases aren't really the same
> 3) multiple mice implies multiple users, multiple active windows,
> multiple focus, etc.

Multi-touch is heading in that direction too. Even with a single user,
tablets are already at the point where you can have multiple windows
on screen at once and so multiple active windows with focus is
plausible right now.

Alan Alpert

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