[vtkusers] Using MacBook trackpad freezes application

[Enzo Matsumiya]

Hi David,

I tested both with Qt 5.7.0 and 5.7.1. Sorry I forgot to mention this.


Thanks.

On Feb 3, 2017 19:27, "David Gobbi" <david.gobbi at gmail.com> wrote:

> Hi Enzo,
>
> Can you also report what version of Qt you are using?  Be sure to include
> the patch number, e.g. Qt 4.8.5.
>
>  - David
>
> On Wed, Feb 1, 2017 at 11:43 AM, Enzo Matsumiya <enzo.matsumiya at gmail.com>
> wrote:
>
>> Hi,
>>
>> I'm experiencing exactly this bug, though not only when scrolling,
>> dragging also freezes:
>>
>> http://www.paraview.org/Bug/view.php?id=15822
>>
>> - macOS 10.11 or 10.12
>> - QVTKWidget, vktResliceImageViewer with a DICOM data set
>> - Either VTK 7.0 or 7.1
>>
>> I normally use the MacBook connected to an external monitor, keyboard and
>> mouse (non-Apple). I just recently stumbled on this issue when I needed to
>> work with it on my lap.
>>
>> When using an external mouse, everything works fine.
>> When using the trackpad, it *looks* like it worked (windowing is changed,
>> reslice occurs, etc), but it stats getting so slow that the application
>> freezes. The external trackpad has the same behaviour (not sure this is
>> obvious). If it's not very clear, please download the videos attached to
>> the bug report mentioned.
>>
>>
>> I hope there is some solution for this.
>>
>>
>> Thank you very much!
>>
>> --
>>
>> Enzo Ferlin Matsumiya
>> enzo.matsumiya AT gmail DOT com
>>
>
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