towards isolate microscope view in a class

swissmx.py

@@ -238,26 +238,7 @@ class Main(QMainWindow, Ui_MainWindow):
     self.tweakers = {}
     self.setup_sliders()
 
-    self.glw = pg.GraphicsLayoutWidget()
-    self.microscope_page.setLayout(QVBoxLayout())
-    self.microscope_page.layout().addWidget(self.glw)
-    self.glw.show()
-
-    self.vb=vb=self.glw.addViewBox(invertY=True)#,enableMenu=False)
-    self.img = pg.ImageItem()
-    # self.graphicsView.setCentralItem(self.vb)
-    self.glw.scene().sigMouseMoved.connect(self.mouse_move_event)
-    self.glw.scene().sigMouseClicked.connect(self.mouse_click_event)
-    vb.setAspectLocked(True)
-    vb.setBackgroundColor((120, 90, 90))
-    vb.addItem(self.img)
-    try:
-      grid=pg.GridItem(pen=(0,255,0),textPen=(0,255,0)) #green grid and labels
-    except:
-      grid=pg.GridItem()
-
-
-    vb.addItem(grid)
+    self.init_graphics()
 
     self._escape_current_state = "Maintenance"
     self._pin_mounting_offset = 0.0
@@ -334,6 +315,32 @@ class Main(QMainWindow, Ui_MainWindow):
     self._tabs_daq_methods.currentChanged.connect(self.switch_task)
     self.switch_task()
 
+  def init_graphics(self):
+    self.glw = pg.GraphicsLayoutWidget()
+    self.microscope_page.setLayout(QVBoxLayout())
+    self.microscope_page.layout().addWidget(self.glw)
+    self.glw.show()
+
+    self.vb=vb=self.glw.addViewBox(invertY=False)#,enableMenu=False)
+    self.img=img=pg.ImageItem()
+    tr=QtGui.QTransform()  # prepare ImageItem transformation:
+    tr.rotate(30)
+    tr.setMatrix(-1, 0, 0,
+                  0,-1, 0,
+                  0, 0, 1)
+    img.setTransform(tr)  # assign transform
+    # self.graphicsView.setCentralItem(self.vb)
+    self.glw.scene().sigMouseMoved.connect(self.mouse_move_event)
+    self.glw.scene().sigMouseClicked.connect(self.mouse_click_event)
+    vb.setAspectLocked(True)
+    vb.setBackgroundColor((120, 90, 90))
+    vb.addItem(img)
+    try:
+      grid=pg.GridItem(pen=(0,255,0),textPen=(0,255,0)) #green grid and labels
+    except:
+      grid=pg.GridItem()
+    vb.addItem(grid)
+
   def create_helical_widgets(self):
     tbox = self._helical_tablebox
     htab = self._helical_scan_table = HelicalTableWidget()