python - pyqtgraph.ParameterTree is very slow -


i using payqtgraph.parametertree software project. basic functionality pretty similar recommended use of widget , looks this:

t = parametertree() params = [] params.append([         {'name': 'test1', 'type': 'str', 'value': somevalue, 'readonly':     true},         {'name': 'test2', 'type': 'str', 'value': someothervalue,     'readonly': true},]  self.p = parameter.create(name='params', type='group', children=params) self.t.setparameters(self.p, showtop=false)

now, problem self.t.setparameters(self.p, showtop=false) extreeemely slow. fill params dynamically, because tree content depends on user file selection. 30 tree elements pretty fast, above 150 obnoxiously slow, if may that.

i tried kinds of things first thought about, deactivating parametertree signal emission before constructing it, , reactivating after construction self.t.blocksignals(true) or so, didn't change anything.

i found out tree performs item.treewidgetchanged() event each time parameter element added , line bottleneck. however, that's part of pyqtgraph api , i'm not supposed modify that. :/

do have idea if there's way speed things up?

thanks!


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