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

[Elvis Stansvik]

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).

Elvis

>
> Elvis