Merge pull request #18 from makermelissa/master

Added animated gif example

Author: makermelissa

README.rst

@@ -19,6 +19,7 @@ This driver supports the following hardware:
 
 * `Adafruit 16x9 Charlieplexed PWM LED Matrix Driver - IS31FL3731 <https://www.adafruit.com/product/2946>`_
 * `Adafruit 15x7 CharliePlex LED Matrix Display FeatherWings <https://www.adafruit.com/product/2965>`_
+* `Adafruit 16x8 CharliePlex LED Matrix Bonnets <https://www.adafruit.com/product/4127>`_
 
 Dependencies
 =============

examples/is31fl3731_pillow_animated_gif.py

@@ -0,0 +1,66 @@
+"""
+Example to extract the frames and other parameters from an animated gif
+and then run the animation on the display.
+
+Usage:
+python3 is31fl3731_pillow_animated_gif.py animated.gif
+
+This example is for use on (Linux) computers that are using CPython with
+Adafruit Blinka to support CircuitPython libraries. CircuitPython does
+not support PIL/pillow (python imaging library)!
+
+Author(s): Melissa LeBlanc-Williams for Adafruit Industries
+"""
+
+import sys
+import board
+from PIL import Image
+import adafruit_is31fl3731
+
+i2c = board.I2C()
+
+# uncomment line if you are using Adafruit 16x9 Charlieplexed PWM LED Matrix
+#display = adafruit_is31fl3731.Matrix(i2c)
+# uncomment line if you are using Adafruit 16x9 Charlieplexed PWM LED Matrix
+display = adafruit_is31fl3731.CharlieBonnet(i2c)
+display.fill(0)
+
+# Open the gif
+if len(sys.argv) < 2:
+    print("No image file specified")
+    print("Usage: python3 is31fl3731_pillow_animated_gif.py animated.gif")
+    sys.exit()
+
+image = Image.open(sys.argv[1])
+
+# Make sure it's animated
+if not image.is_animated:
+    print("Specified image is not animated")
+    sys.exit()
+
+# Get the autoplay information from the gif
+delay = image.info['duration']
+loops = image.info['loop']
+
+# Adjust loop count (0 is forever)
+if loops > 0:
+    loops += 1
+
+# IS31FL3731 only supports 0-7
+if loops > 7:
+    loops = 7
+
+# Get the frame count (maximum 8 frames)
+frame_count = image.n_frames
+if frame_count > 8:
+    frame_count = 8
+
+# Load each frame of the gif onto the Matrix
+for frame in range(frame_count):
+    image.seek(frame)
+    frame_image = Image.new('L', (display.width, display.height))
+    frame_image.paste(image.convert("L"), (display.width // 2 - image.width // 2,
+                                           display.height // 2 - image.height // 2))
+    display.image(frame_image, frame=frame)
+
+display.autoplay(delay=delay, loops=loops)

examples/is31fl3731_pillow_numbers.py

@@ -2,6 +2,10 @@
 Example to utilize the Python Imaging Library (Pillow) and draw bitmapped text
 to 8 frames and then run autoplay on those frames.
 
+This example is for use on (Linux) computers that are using CPython with
+Adafruit Blinka to support CircuitPython libraries. CircuitPython does
+not support PIL/pillow (python imaging library)!
+
 Author(s): Melissa LeBlanc-Williams for Adafruit Industries
 """