network: Minor change.

src/view/network/GraphWidget.py

@@ -129,10 +129,10 @@ class EdgeItem(QGraphicsItem):
         # painter.drawRect(self.boundingRect())
 
         line = QLineF(self.src_node.pos(), self.dest_node.pos())
-
         if line.length() == 0.0:
             return
 
+        # Select color
         color = Qt.blue
         if self.graph.selected_item() == self:
             color = Qt.red
@@ -143,6 +143,7 @@ class EdgeItem(QGraphicsItem):
 
         painter.setPen(QPen(color, 3, Qt.SolidLine, Qt.RoundCap,
                             Qt.RoundJoin))
+        # Draw the line
         painter.drawLine(line)
 
         line_center = QPointF(
@@ -150,7 +151,7 @@ class EdgeItem(QGraphicsItem):
             (self.src_node.pos().y() + self.dest_node.pos().y()) / 2,
         )
 
-        # Draw the arrows if there's enough room.
+        # Draw the arrows
         angle = math.acos(line.dx() / line.length())
         if line.dy() >= 0:
             angle = (math.pi * 2.0) - angle
@@ -174,27 +175,28 @@ class NodeText(QGraphicsTextItem):
         self.item = node_item
         self.setPlainText(self.item.node.name)
         self.setDefaultTextColor(Qt.black)
-        #self.setPos(self.item.pos())
         self.set_custom_pos(self.item.pos())
         self.setZValue(2)
 
     def set_custom_pos(self, pos):
         x = pos.x()
-        y = pos.y() - 42
+        y = pos.y() - 42 # Dont panic! The answer is 42
 
         self.setPos(QPointF(x,y))
 
-
     def paint(self, painter, option, widget):
         color = QColor(Qt.white)
         color.setAlpha(128)
 
+        # Draw text background
         painter.setBrush(color)
         painter.drawRect(self.boundingRect())
 
+        # Draw text
         super(NodeText, self).paint(painter, option, widget)
 
     def rename(self):
+        # Update the node text
         self.setPlainText(self.item.node.name)
 
 class NewEdgeLine(QGraphicsItem):
@@ -349,7 +351,7 @@ class GraphWidget(QGraphicsView):
             )
         )
 
-        self.setSelectedItem(None)
+        self.set_selected_item(None)
 
         for edge in edges:
             self.graph.remove_edge(edge.edge.name)
@@ -394,7 +396,7 @@ class GraphWidget(QGraphicsView):
             return
 
         edge = self.graph.add_edge(node1.node, node2.node)
-        self.setSelectedItem(None)
+        self.set_selected_item(None)
         self.setSelectedNewEdgeSrcNode(None)
         # Reset the temporary line
         self.tmp_line = None
@@ -466,7 +468,7 @@ class GraphWidget(QGraphicsView):
         """
         return self._selected_item
 
-    def setSelectedItem(self, item):
+    def set_selected_item(self, item):
         """Set current selected item
 
         Args:
@@ -636,6 +638,8 @@ class GraphWidget(QGraphicsView):
 
     def mouseMoveEvent(self, event):
         pos = self.mapToScene(event.pos())
+
+        # Selecte item on the fly
         items = self.items(event.pos())
         selectable_items = list(
             filter(
@@ -644,11 +648,10 @@ class GraphWidget(QGraphicsView):
             )
         )
 
-        # Selecte item on the fly
         if selectable_items:
-            self.setSelectedItem(selectable_items[0])
+            self.set_selected_item(selectable_items[0])
         else:
-            self.setSelectedItem(None)
+            self.set_selected_item(None)
 
         # Update temporary line
         if self.selected_new_edge_src_node() is not None: