use new OnDiskBitmap API

Author: FoamyGuy

README.rst

@@ -93,26 +93,19 @@ Usage Example
 
     g = displayio.Group()
 
-    # CircuitPython 6 & 7 compatible
-    f = open("/display-ruler.bmp", "rb")
-    pic = displayio.OnDiskBitmap(f)
-    t = displayio.TileGrid(
-        pic, pixel_shader=getattr(pic, "pixel_shader", displayio.ColorConverter())
-    )
-
-    # # CircuitPython 7 compatible only
-    # pic = displayio.OnDiskBitmap("/display-ruler.bmp")
-    # t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
-
+    pic = displayio.OnDiskBitmap("/display-ruler.bmp")
+    t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
     g.append(t)
 
     display.root_group = g
 
     display.refresh()
+
     print("refreshed")
 
     time.sleep(120)
 
+
 Documentation
 =============
 

examples/ssd1681_simpletest.py

@@ -40,20 +40,14 @@
 
 g = displayio.Group()
 
-with open("/display-ruler.bmp", "rb") as f:
-    pic = displayio.OnDiskBitmap(f)
-    # CircuitPython 6 & 7 compatible
-    t = displayio.TileGrid(
-        pic, pixel_shader=getattr(pic, "pixel_shader", displayio.ColorConverter())
-    )
-    # CircuitPython 7 compatible only
-    # t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
-    g.append(t)
+pic = displayio.OnDiskBitmap("/display-ruler.bmp")
+t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
+g.append(t)
 
-    display.root_group = g
+display.root_group = g
 
-    display.refresh()
+display.refresh()
 
-    print("refreshed")
+print("refreshed")
 
-    time.sleep(120)
+time.sleep(120)