begin for py3 support

mains/trainer/main.py

 import cv2
 import sys
+
+from kivymd.app import MDApp
+
 sys.path.append("../../src")
 
 import os
@@ -317,16 +320,16 @@ class MainWindow(TabbedPanel):
             print('unknown task finished:', tag)
 
 
-class WoodmasterApp(App, BaseApp):
+class WoodmasterApp(MDApp, BaseApp):
     _project = None
-    theme_cls = ThemeManager()
+    # theme_cls = ThemeManager()
     show_editor = BooleanProperty(True)
 
 
     def __init__(self, *a, **kw):
         self._app_name = "woodmaster"
         super(WoodmasterApp, self).__init__(*a, **kw)
-        self.theme_cls.primary_palette='Grey'
+        self.theme_cls.primary_palette='Indigo'
         self.theme_cls.theme_style='Dark'
 
     def build(self):

src/ui/kivy/cam.py

@@ -19,10 +19,10 @@ from kivy.graphics import (
 
 from kivy.properties import StringProperty, BooleanProperty, ObjectProperty, ListProperty, NumericProperty
 from kivy.clock import mainthread, Clock
+from kivymd.uix.selectioncontrol import MDSwitch
 
-from kivymd.selectioncontrols import MDSwitch
-from kivymd.textfields import MDTextField
-from kivymd.button import MDIconButton, MDFloatingActionButton
+from kivymd.uix.textfield import MDTextField
+from kivymd.uix.button import MDIconButton, MDFloatingActionButton
 
 from . import drawing
 from detector.algorithms import projection
@@ -158,11 +158,11 @@ try:
                         size_hint:None,None
                         orientation:'vertical'
                         padding:sp(15),0
-                        MDSwitch:
-                            size_hint:None,None
-                            size: sp(48), dp(20)
-                            id:switch_camera
-                            on_press: print (self.active)
+                        # MDSwitch:
+                        #     size_hint:None,None
+                        #     size: sp(48), dp(20)
+                        #     id:switch_camera
+                        #     on_press: print (self.active)
                         MDLabel:
                             size_hint:None,None
                             height:dp(20)

src/ui/kivy/mddialog.py

@@ -8,12 +8,9 @@ from kivy.uix.modalview import ModalView
 from kivy.uix.popup import PopupException
 from kivy.animation import Animation
 from kivymd.theming import ThemableBehavior
-try:
-    from kivymd.elevationbehavior import RectangularElevationBehavior
-except ImportError:
-    from kivymd.elevation import RectangularElevationBehavior
+from kivymd.uix.behaviors.elevation import RectangularElevationBehavior
 
-from kivymd.button import MDFlatButton
+from kivymd.uix.button import MDFlatButton
 
 Builder.load_string('''
 <MDDialog>:

src/ui/kivy/sequence.py

@@ -21,15 +21,18 @@ from kivy.uix.scrollview import ScrollView
 from kivy.uix.scatterlayout import ScatterLayout
 from kivy.uix.stencilview import StencilView
 
-from kivymd.button import MDRaisedButton, MDFlatButton, MDFloatingActionButton
-from kivymd.list import MDList, OneLineListItem, TwoLineListItem, ThreeLineListItem
-from kivymd.tabs import MDTabbedPanel, MDTab
-from kivymd.toolbar import MDToolbar
-from kivymd.textfields import MDTextField
+from kivymd.uix.button import MDRaisedButton, MDFlatButton, MDFloatingActionButton
+from kivymd.uix.list import MDList, OneLineListItem, TwoLineListItem, ThreeLineListItem
+
+
+
+# from kivymd.uix.tab import MDTabbedPanel, MDTab
+from kivymd.uix.toolbar import MDToolbar
+from kivymd.uix.textfield import MDTextField
 from .mddialog import  MDDialog
-from kivymd.label import MDLabel
+from kivymd.uix.label import MDLabel
 from .widgetsmd import MDNumberInput, yesno_box
-from kivymd.list import MDList
+from kivymd.uix.list import MDList
 from ui.kivy.cam import CameraClick
 
 from ui.kivy.widgets import apply_image
@@ -564,7 +567,7 @@ class SequenceThumbListView(ScrollView):
     def on_image_select(self, imgpath):
         """dummy impl"""
 
-from kivymd.bottomsheet import MDGridBottomSheet, MDBottomSheet
+from kivymd.uix.bottomsheet import MDGridBottomSheet, MDBottomSheet
 
 Builder.load_string("""
 <SequenceImageInformation>:
@@ -629,7 +632,7 @@ class SequenceImageInformation(ScrollView):
     def __init__(self, *a, **kw):
         super(SequenceImageInformation, self).__init__(*a, **kw)
 
-from kivymd.list import MDList
+from kivymd.uix.list import MDList
 from kivy.uix.scrollview import ScrollView
 
 

src/ui/kivy/widgets.py

@@ -371,7 +371,7 @@ class SubprocessObserver(BoxLayout):
     def on_task_finished(self, *a, **kw):
         print("SubProcessObserver::on_task_finished:", a, kw)
 
-from kivymd.button import MDRaisedButton, MDFlatButton, BaseRectangularButton
+from kivymd.uix.button import MDRaisedButton, MDFlatButton, BaseRectangularButton
 
 class DropDownList(MDFlatButton):
     values = ListProperty()

src/ui/kivy/widgetsmd.py

@@ -29,10 +29,12 @@ from kivy.graphics.context_instructions import Color
 from kivy.graphics.vertex_instructions import Rectangle, Line
 
 from kivy.clock import Clock
+from kivymd.uix.label import MDLabel
 
-from kivymd.textfields import MDTextField, MDLabel
-from kivymd.button import MDFlatButton, MDIconButton, MDRaisedButton
-from kivymd.selectioncontrols import MDCheckbox
+
+from kivymd.uix.textfield import MDTextField
+from kivymd.uix.button import MDFlatButton, MDIconButton, MDRaisedButton
+from kivymd.uix.selectioncontrol import MDCheckbox
 from .mddialog import MDDialog
 
 from .widgets import NumberInputBehavior, LabeledCheckBox