If a widget has been hidden using hide_widget, it will reappear after the view is zoom-out and zoom-in

[hmq2018]

If a widget has been hidden using hide_widget, it will reappear after the viewer is zoom-out (very small) and zoom-in.

File: node_base.py

    def set_proxy_mode(self, mode):
        """
        Set whether to draw the node with proxy mode.
        (proxy mode toggles visibility for some qgraphic items in the node.)

        Args:
            mode (bool): true to enable proxy mode.
        """
       ...

        # node widget visibility.   =>need to add some conditions<=
        for w in self._widgets.values():
            w.widget().setVisible(visible)

[serhaturtis]

Just in case anyone needs, if you don't need proxy mode and want to disable this behaviour, you can just edit the "auto_switch_mode" method in "node_base.py" to:

    def auto_switch_mode(self):
        """
        Decide whether to draw the node with proxy mode.
        (this is called at the start in the "self.paint()" function.)
        """
        if ITEM_CACHE_MODE is QtWidgets.QGraphicsItem.ItemCoordinateCache:
            return

        rect = self.sceneBoundingRect()
        l = self.viewer().mapToGlobal(
            self.viewer().mapFromScene(rect.topLeft()))
        r = self.viewer().mapToGlobal(
            self.viewer().mapFromScene(rect.topRight()))
        # width is the node width in screen
        width = r.x() - l.x()

        #self.set_proxy_mode(width < self._proxy_mode_threshold)
        # TODO: maybe limit zoom instead?
        self.set_proxy_mode(False)