Merge pull request #15 from FoamyGuy/odb_api_update

use new OnDiskBitmap API

Author: dhalbert

README.rst

@@ -123,16 +123,20 @@ Usage Example
 
     g = displayio.Group()
 
-    with open("/display-ruler.bmp", "rb") as f:
-        pic = displayio.OnDiskBitmap(f)
-        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
+    # Place the display group on the screen
+    display.root_group = g
 
-        display.refresh()
+    # Refresh the display to have it actually show the image
+    # NOTE: Do not refresh eInk displays sooner than 180 seconds
+    display.refresh()
+    print("refreshed")
+
+    time.sleep(180)
 
-        time.sleep(120)
 
 
 Documentation

examples/uc8151d_2.9_color.py

@@ -44,23 +44,16 @@
 g = displayio.Group()
 
 # Display a ruler graphic from the root directory of the CIRCUITPY drive
-with open("/display-ruler.bmp", "rb") as f:
-    pic = displayio.OnDiskBitmap(f)
-    # Create a Tilegrid with the bitmap and put in the displayio group
-    # 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)
 
-    # Place the display group on the screen
-    display.root_group = g
+# Place the display group on the screen
+display.root_group = g
 
-    # Refresh the display to have it actually show the image
-    # NOTE: Do not refresh eInk displays sooner than 180 seconds
-    display.refresh()
-    print("refreshed")
+# Refresh the display to have it actually show the image
+# NOTE: Do not refresh eInk displays sooner than 180 seconds
+display.refresh()
+print("refreshed")
 
-    time.sleep(180)
+time.sleep(180)

examples/uc8151d_simpletest.py

@@ -37,13 +37,16 @@
 
 g = displayio.Group()
 
-with open("/display-ruler.bmp", "rb") as f:
-    pic = displayio.OnDiskBitmap(f)
-    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
+# Place the display group on the screen
+display.root_group = g
 
-    display.refresh()
+# Refresh the display to have it actually show the image
+# NOTE: Do not refresh eInk displays sooner than 180 seconds
+display.refresh()
+print("refreshed")
 
-    time.sleep(120)
+time.sleep(180)