- Transition to functions for entity retrieval

main.py

@@ -71,8 +71,11 @@ class MainWindow(QMainWindow):
     def act_line_mode(self):
         if not self.ui.pb_linetool.isChecked():
             self.sketchWidget.mouse_mode = 'line'
+            print(self.ui.pb_linetool.isChecked())
         else:
             self.sketchWidget.mouse_mode = None
+            self.sketchWidget.line_buffer = [None, None]
+            print(self.ui.pb_linetool.isChecked())
 
     def act_constrain_pt_pt_mode(self):
         if not self.ui.pb_con_ptpt.isChecked():
@@ -111,9 +114,13 @@ class MainWindow(QMainWindow):
             self.sketchWidget.mouse_mode = None
 
     def constrain_finished(self):
+        # safely disable the line modes
         self.ui.pb_con_ptpt.setChecked(False)
         self.ui.pb_con_line.setChecked(False)
         self.ui.pb_con_dist.setChecked(False)
+        self.ui.pb_con_mid.setChecked(False)
+        self.ui.pb_con_perp.setChecked(False)
+
 
     def view_update(self):
         print("Update")