remove 8.x compatibility. use strings for types to avoid circular import

[hackapet/Adafruit_Blinka_Displayio.git] / displayio / __init__.py

diff --git a/displayio/__init__.py b/displayio/__init__.py
index fad912245754a95d6d600a209f7882725a650986..9e9d97741db91c70320b3e397067f503347aaee3 100644 (file)
--- a/displayio/__init__.py
+++ b/displayio/__init__.py
@@ -18,21 +18,17 @@ displayio for Blinka
 """
 import threading
 from typing import Union
-from ._fourwire import FourWire
-from ._i2cdisplay import I2CDisplay
+
 from ._bitmap import Bitmap
 from ._colorspace import Colorspace
 from ._colorconverter import ColorConverter
-from ._display import Display
-from ._epaperdisplay import EPaperDisplay
 from ._group import Group
 from ._ondiskbitmap import OnDiskBitmap
 from ._palette import Palette
-from ._shape import Shape
 from ._tilegrid import TileGrid
-from ._displaybus import _DisplayBus
 from ._constants import CIRCUITPY_DISPLAY_LIMIT
 
+
 __version__ = "0.0.0+auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_Blinka_displayio.git"
 
@@ -45,7 +41,7 @@ def _background():
     """Main thread function to loop through all displays and update them"""
     while True:
         for display in displays:
-            display.background()
+            display._background()  # pylint: disable=protected-access
 
 
 def release_displays() -> None:
@@ -55,7 +51,7 @@ def release_displays() -> None:
     initialization so the display is active as long as possible.
     """
     for display in displays:
-        display.release()
+        display._release()  # pylint: disable=protected-access
     displays.clear()
 
     for display_bus in display_buses:
@@ -63,14 +59,16 @@ def release_displays() -> None:
     display_buses.clear()
 
 
-def allocate_display(new_display: Union[Display, EPaperDisplay]) -> None:
+def allocate_display(
+    new_display: Union["busdisplay.BusDisplay", "epaperdisplay.EPaperDisplay"]
+) -> None:
     """Add a display to the displays pool and return the new display"""
     if len(displays) >= CIRCUITPY_DISPLAY_LIMIT:
         raise RuntimeError("Too many displays")
     displays.append(new_display)
 
 
-def allocate_display_bus(new_display_bus: _DisplayBus) -> None:
+def allocate_display_bus(new_display_bus: "busdisplay._displaybus._DisplayBus") -> None:
     """Add a display bus to the display_buses pool and return the new display bus"""
     if len(display_buses) >= CIRCUITPY_DISPLAY_LIMIT:
         raise RuntimeError(