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Fix: Improve large project file loading performance #2665

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merged 1 commit into from
Feb 6, 2025
Merged

Fix: Improve large project file loading performance #2665

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11 changes: 10 additions & 1 deletion meshroom/core/attribute.py
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,12 @@ def attributeFactory(description, value, isOutput, node, root=None, parent=None)
else:
attr.resetToDefaultValue()

attr.valueChanged.connect(lambda attr=attr: node._onAttributeChanged(attr))
# Only connect slot that reacts to value change once initial value has been set.
# NOTE: This should be handled by the Node class, but we're currently limited by our core
# signal implementation that does not support emitting parameters.
# And using a lambda here to send the attribute as a parameter causes
# performance issues when using the pyside backend.
attr.valueChanged.connect(attr._onValueChanged)

return attr

Expand Down Expand Up @@ -213,6 +218,10 @@ def _set_value(self, value):
self.valueChanged.emit()
self.validValueChanged.emit()

@Slot()
def _onValueChanged(self):
self.node._onAttributeChanged(self)

def _set_label(self, label):
if self._label == label:
return
Expand Down