Fix AutoNode bug and compatible high dpi

NodeGraphQt/base/graph.py

@@ -1210,6 +1210,10 @@ def _deserialize(self, data, relative_pos=False, pos=None, set_parent=True):
         """
         if not self._editable:
             return
+
+        _temp_auto_update = self._auto_update
+        self._auto_update = False
+
         nodes = {}
         # build the nodes.
         for n_id, n_data in data.get('nodes', {}).items():
@@ -1269,6 +1273,7 @@ def _deserialize(self, data, relative_pos=False, pos=None, set_parent=True):
 
         if set_parent:
             [node.set_parent(self._current_node_space) for node in node_objs]
+        self._auto_update = _temp_auto_update
 
         return node_objs
 
@@ -1340,8 +1345,7 @@ def import_session(self, file_path):
         Args:
             file_path (str): path to the serialized layout file.
         """
-        _temp_auto_update = self._auto_update
-        self._auto_update = False
+
         file_path = file_path.strip()
         if not os.path.isfile(file_path):
             raise IOError('file does not exist.')
@@ -1368,7 +1372,6 @@ def import_session(self, file_path):
         self.clear_undo_stack()
         self._model.session = file_path
         self.session_changed.emit(file_path)
-        self._auto_update = _temp_auto_update
 
     def copy_nodes(self, nodes=None):
         """

NodeGraphQt/base/model.py

@@ -20,7 +20,7 @@ def __init__(self, node):
         self.multi_connection = False
         self.visible = True
         self.connected_ports = defaultdict(list)
-        self.data_type = 'None'
+        self.data_type = 'NoneType'
 
     def __repr__(self):
         return '<{}(\'{}\') @ {}>'.format(

NodeGraphQt/base/node.py

@@ -763,7 +763,7 @@ def add_checkbox(self, name, label='', text='', state=False, tab=None):
         self.view.add_widget(widget)
 
     def add_input(self, name='input', multi_input=False, display_name=True,
-                  color=None, data_type='None', painter_func=None):
+                  color=None, data_type='NoneType', painter_func=None):
         """
         Add input :class:`Port` to node.
 
@@ -803,7 +803,7 @@ def add_input(self, name='input', multi_input=False, display_name=True,
         return port
 
     def add_output(self, name='output', multi_output=True, display_name=True,
-                   color=None, data_type='None', painter_func=None):
+                   color=None, data_type='NoneType', painter_func=None):
         """
         Add output :class:`Port` to node.
 

NodeGraphQt/base/utils.py

@@ -85,8 +85,8 @@ def setup_context_menu(graph):
 
     edit_menu.add_separator()
 
-    edit_menu.add_command('Layout Graph Down Stream', _layout_graph_down, 'L')
-    edit_menu.add_command('Layout Graph Up Stream', _layout_graph_up, 'Ctrl+L')
+    edit_menu.add_command('Layout Graph Up Stream', _layout_graph_up, 'L')
+    edit_menu.add_command('Layout Graph Down Stream', _layout_graph_down, 'Ctrl+L')
 
     edit_menu.add_separator()
 
@@ -826,10 +826,14 @@ def minimize_node_ref_count(node):
         if hasattr(node, 'deleted'):
             del node
             return
-        from .node import BaseNode, SubGraph
+        from .node import BaseNode
+        from .graph import SubGraph
         node._parent = None
         if isinstance(node, BaseNode):
-            [wid.deleteLater() for wid in node.view._widgets.values()]
+            try:
+                [wid.deleteLater() for wid in node.view._widgets.values()]
+            except:
+                pass
             node.view._widgets.clear()
             for port in node._inputs:
                 port.model.node = None

NodeGraphQt/qgraphics/pipe.py

@@ -384,8 +384,6 @@ def delete(self):
             self.output_port.remove_pipe(self)
         if self.scene():
             self.scene().removeItem(self)
-        # TODO: not sure if we need this...?
-        del self
 
 
 class LivePipe(Pipe):

NodeGraphQt/widgets/viewer.py

@@ -251,7 +251,6 @@ def mousePressEvent(self, event):
 
         items = self._items_near(map_pos, None, 20, 20)
         nodes = [i for i in items if isinstance(i, AbstractNodeItem)]
-        pipes = [i for i in items if isinstance(i, Pipe)]
 
         if nodes:
             self.MMB_state = False
@@ -735,7 +734,7 @@ def tab_search_set_nodes(self, nodes):
         self._search_widget.set_nodes(nodes)
 
     def tab_search_toggle(self):
-        if type(self._search_widget) is TabSearchMenuWidget:
+        if isinstance(self._search_widget, TabSearchMenuWidget):
             return
 
         pos = self._previous_pos
@@ -753,7 +752,7 @@ def tab_search_toggle(self):
             self.clearFocus()
 
     def rebuild_tab_search(self):
-        if type(self._search_widget) is TabSearchMenuWidget:
+        if isinstance(self._search_widget, TabSearchMenuWidget):
             self._search_widget.rebuild = True
 
     def context_menus(self):

example.py

@@ -135,6 +135,7 @@ def __init__(self):
 
 
 if __name__ == '__main__':
+    QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
     app = QtWidgets.QApplication([])
 
     # create node graph.

example_auto_nodes.py

@@ -47,6 +47,7 @@ def get_published_nodes_from_folder(folder_path):
 
 
 if __name__ == '__main__':
+    QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
     app = QtWidgets.QApplication()
 
     # create node graph.

example_auto_nodes/data_node.py

@@ -5,7 +5,7 @@
 
 class VectorSplit(AutoNode):
     """
-    Splict a vector to x,y,z
+    Split a vector to x,y,z
     """
 
     __identifier__ = 'Data'
@@ -49,7 +49,7 @@ def __init__(self):
         super(VectorMaker, self).__init__()
 
         self.add_output('out', list)
-        self.create_property("out",None)
+        self.create_property("out", None)
 
         self.add_input("x", float)
         self.add_input("y", float)