network: Add timers.

src/View/Network/GraphWidget.py

@@ -2,6 +2,8 @@
 
 import math
 
+from tools import timer
+
 from PyQt5.QtCore import (
     Qt, QPoint, QPointF, QSizeF, QLineF, QRectF,
     pyqtSlot, pyqtSignal,
@@ -47,6 +49,7 @@ class NodeItem(QGraphicsItem):
         path.addEllipse(-10, -10, 20, 20)
         return path
 
+    @timer
     def paint(self, painter, option, widget):
         painter.setPen(Qt.NoPen)
 
@@ -127,6 +130,7 @@ class EdgeItem(QGraphicsItem):
 
         return result
 
+    @timer
     def paint(self, painter, option, widget):
         # Draw shape of the edge
         # color = QColor(Qt.white)
@@ -198,6 +202,7 @@ class NodeText(QGraphicsTextItem):
 
         self.setPos(QPointF(x,y))
 
+    @timer
     def paint(self, painter, option, widget):
         color = QColor(Qt.white)
         color.setAlpha(128)
@@ -232,6 +237,7 @@ class NewEdgeLine(QGraphicsItem):
             )
         ).normalized().adjusted(-extra, -extra, extra, extra)
 
+    @timer
     def paint(self, painter, option, widget):
         line = QLineF(self.src, self.dest)
         if line.length() == 0.0:
@@ -284,6 +290,7 @@ class GraphWidget(QGraphicsView):
 
         self.create_items()
 
+    @timer
     def create_items(self):
         """Create all items and draw its