[PATCH 1/2] cairo-util: Add frame_touch_motion support

[Stanislav Vorobiov]

Hi,

Recently I've sent patches to ML that implement just that, see -
http://lists.freedesktop.org/archives/wayland-devel/2014-May/014602.html
I got no comments on them though...

On 05/13/2014 02:14 PM, Boyan Ding wrote:
> Hi Jason,
> 
> In writing v2 of the patches I found out frame_touch_motion 
> isn't that easy as it seems. For there's something tricky.
> 
> Without frame_touch_motion the code actually works all right - finger
> down on a button presses the button and finger up releases it,
> regardless of where the finger has gone.
> 
> However, if frame_touch_motion is implemented, I think the 
> behavior might be changed to this - finger down presses 
> the button; once the finger leave the button, the press should be
> cancelled and if the finger enters the region of another button we'll
> just act as if we "hover" above the button.
> 
> If it is implemented like that, we'll have to change the 
> frame_touch structure to add a field that keep track of which 
> button we hover on, just like hover_button in frame_pointer.
> 
> I'll also add a frame_touch_cancel function, it seems not
> that hard. Just scan the list of touches and take appropriate 
> actions (cancel button, destroy touch) will do.
> 
> I wonder whether my ideas are appropriate.
> 
> Regards,
> Boyan Ding
> 
> 
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