How to keep the scale of the items while resizing a window

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yunsong zhao

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Mar 7, 2020, 6:37:45 AM3/7/20

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Hi, there,

All the examples provided by pyqtgraph, changes the scale of the items in a viewbox when resizing the parent window, ie, the view range retains.

But I want to keep the scale while resizing the window.

How to implement this. Thanks!

Patrick

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Mar 8, 2020, 12:38:14 AM3/8/20

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Hi,

I don't think there's an easy "switch" to turn on the behaviour you describe. I think you could do it by connecting to the sigResized signal of the ViewBox, and calculating new values for the visible region and then calling setRange(). There would be a bit of work remembering old values of the ViewBox size, and maybe ignoring the event on initialisation or if your setRange() call also triggers the sigResized signal again.

With a little more work (querying the window position) then you might be able to differentiate between a resize from the top-left or bottom-right corners.

There may be an easier way to do it, but that's the only way I can think of at the moment.