[vtk-developers] Interaction with color/opacity editors in vtkChartXY broken on retina display

[Elvis Stansvik]

2017-05-29 15:26 GMT+02:00 Sebastien Jourdain <sebastien.jourdain at kitware.com>:
> You need to set the size on the interactor.

Ah, how do I do that? (sorry for being a bit dumb)

I've been scouring over the PV code, and I can't see that it does
anything special with its interactor. It seems to just hook it up:

https://gitlab.kitware.com/paraview/paraview/blob/master/Qt/Components/pqTransferFunctionWidget.cxx#L207

Elvis

>
>> On May 29, 2017, at 03:42, Elvis Stansvik <elvis.stansvik at orexplore.com> wrote:
>>
>> 2017-05-29 11:40 GMT+02:00 Elvis Stansvik <elvis.stansvik at orexplore.com>:
>>> 2017-05-29 10:49 GMT+02:00 Elvis Stansvik <elvis.stansvik at orexplore.com>:
>>>> 2017-05-26 12:52 GMT+02:00 Elvis Stansvik <elvis.stansvik at orexplore.com>:
>>>>> Hi all,
>>>>>
>>>>> We're using
>>>>>
>>>>>    vtkColorTransferFunctionItem
>>>>>    vtkColorTransferControlPointsItem
>>>>>
>>>>>    vtkCompositeTransferFunctionItem
>>>>>    vtkCompositeControlPointsItem
>>>>>
>>>>> in a vtkChartXY for editing of color/opacity transfer functions,
>>>>> similar I believe to what ParaView does.
>>>>>
>>>>> I noticed on a retina Mac that interaction seems off. Clicking one
>>>>> place seems to lead to a response at the wrong point in the editor.
>>>>>
>>>>> Some experimenting later, it seems that I can click in the upper half
>>>>> of the composite editor (which we use for opacity), and I get a
>>>>> response at the corresponding place in the lower half of it.
>>>>>
>>>>> Anyone seen this and know if there's something I can do about it? It's
>>>>> a showstopper for our application on Mac.
>>>>>
>>>>> In the color editor (the vtkColorTransferFunctionItem /
>>>>> vtkColorTransferControlPointsItem pair), I can't get a response at all
>>>>> :/
>>>>>
>>>>> Grateful for any tips from people using these classes on retina Mac.
>>>>>
>>>>> We're using VTK 8.0.0.rc1.
>>>>
>>>> I tried PV 5.4-RC3 on the Mac, and there the editors work alright, so
>>>> I must be doing something wrong.
>>>>
>>>> I'll have a look at the PV code to see what I'm missing (pointers welcome).
>>>
>>> Hm, the only thing I can see that PV was doing differently is calling
>>> setEnableHiDPI(true).
>>>
>>> I tried doing this myself. That made the text in the chart the correct
>>> size (it was wrong before), but I'm still having the strange mouse
>>> click offset problem (the click is registered in the wrong place).
>>>
>>> Any ideas?
>>
>> Ah, if I just resize the widget holding these editors a little, the
>> behavior is correct from then on.
>>
>> So it must be some initialization problem, the editors are confused
>> about their size on first show somehow.
>>
>> I'm sure I'll figure this out now, sorry for the noise.
>>
>> Elvis
>>
>>>
>>> Elvis
>>>
>>>>
>>>> Elvis
>>>>
>>>>>
>>>>> Elvis
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>>
>> Search the list archives at: http://markmail.org/search/?q=vtk-developers
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/vtk-developers
>>