On Wednesday, 8 July 2020 19:20:33 BST Murphy, Sean wrote: > Is there a way to temporarily pause a QTableView while the underlying model > continues to update? > > My scenario: > - I have two separate QTableViews connected to a single model. > - The model is being fed from a continuously updating data source, i.e. a > sensor. - One of the views needs to remain live at all times - so as the > model's data updates, the view updates immediately. > > For the other view, the user should be able to "pause" that view's display, > spend as much time as they want looking at the data on that paused table, > and then whenever they choose, they can un-pause that view and it returns > to updating constantly. This view has to remain fully usable (scroll bars > work, clicks work, etc.) while paused. > > The only idea I have at the moment is to have a second model object, that is > identical to the first one, except that it isn't connected to the sensor. > At the time the user wants to pause the view, I copy the current data out > of the main model into the second model, swap out the paused view's model > out to the second model, and then swap it back to the main model when the > user wants to go back live. > > Am I missing something easier? The only other idea I had was that I could > try to change the second view from a pure QTableView to one that inherits > from QTableView and then have my own slot that disconnects/connects the > signals between the model and that view based on the when the user wants to > pause/resume. > > Sean
You could have a QProxyModel subclass with a 'timeRange' (or so) property. When set to null it would simply relay everything to the backing model, otherwise it would provide only the relevant subset. I think this would be much easier than copying the data, or swapping models in and out. -Francis H _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
