Merge pull request #3 from makermelissa/main

Added better documentation, new example, requirements need fixed adafruit_framebuf

Author: jepler

.pre-commit-config.yaml

@@ -17,3 +17,4 @@ repos:
     -   id: check-yaml
     -   id: end-of-file-fixer
     -   id: trailing-whitespace
+exclude: \.png$

adafruit_pixel_framebuf.py

@@ -54,6 +54,18 @@ class PixelFramebuffer(adafruit_framebuf.FrameBuffer):
     """
     NeoPixel and Dotstar FrameBuffer for easy drawing and text on a
     grid of either kind of pixel
+
+    :param strip: An object that implements the Neopixel or Dotstar protocol.
+    :param width: Framebuffer width.
+    :param height: Framebuffer height.
+    :param orientation: Orientation of the strip pixels - HORIZONTAL (default) or VERTICAL.
+    :param alternating: Whether the strip alternates direction from row to row (default True).
+    :param reverse_x: Whether the strip X origin is on the right side (default False).
+    :param reverse_y: Whether the strip Y origin is on the bottom (default False).
+    :param tuple top: (x, y) coordinates of grid top left corner (Optional)
+    :param tuple bottom: (x, y) coordinates of grid bottom right corner (Optional)
+    :param int rotation: A value of 0-3 representing the rotation of the framebuffer (default 0)
+
     """
 
     def __init__(
@@ -96,7 +108,7 @@ def blit(self):
         raise NotImplementedError()
 
     def display(self):
-        """Copy the raw buffer to the grid and show"""
+        """Copy the raw buffer changes to the grid and show"""
         for _y in range(self._height):
             for _x in range(self._width):
                 index = (_y * self.stride + _x) * 3

examples/blinka_16x16.png

@@ -0,0 +1,2 @@
+# SPDX-FileCopyrightText: 2020 Melissa LeBlanc-Williams, written for Adafruit Industries
+# SPDX-License-Identifier: MIT

examples/blinka_16x16.png.license

@@ -23,7 +23,7 @@
         pixel_framebuf.line(0, 0, pixel_width - 1, pixel_height - 1, 0x00FF00)
         pixel_framebuf.line(0, pixel_width - 1, pixel_height - 1, 0, 0x00FF00)
         pixel_framebuf.fill_rect(2, 3, 12, 10, 0x000000)
-        pixel_framebuf.text(text, 16 - i, 4, 0xFFFF00)
+        pixel_framebuf.text(text, pixel_width - i, 4, 0xFFFF00)
         pixel_framebuf.rect(1, 2, 14, 12, 0xFF0000)
         pixel_framebuf.line(0, 2, 0, 14, 0x000088)
         pixel_framebuf.line(pixel_width - 1, 2, pixel_width - 1, 14, 0x000088)

examples/pixel_framebuf_16x16_animation.py

@@ -0,0 +1,38 @@
+# SPDX-FileCopyrightText: 2020 Melissa LeBlanc-Williams, written for Adafruit Industries
+# SPDX-License-Identifier: MIT
+"""
+Be sure to check the learn guides for more usage information.
+
+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 board
+import neopixel
+from PIL import Image
+from adafruit_pixel_framebuf import PixelFramebuffer
+
+pixel_pin = board.D18
+pixel_width = 16
+pixel_height = 16
+
+pixels = neopixel.NeoPixel(
+    pixel_pin, pixel_width * pixel_height, brightness=0.1, auto_write=False,
+)
+
+pixel_framebuf = PixelFramebuffer(pixels, pixel_width, pixel_height, reverse_x=True,)
+
+# Make a black background in RGBA Mode
+image = Image.new("RGBA", (pixel_width, pixel_height))
+
+# Open the icon
+icon = Image.open("blinka_16x16.png")
+
+# Alpha blend the icon onto the background
+image.alpha_composite(icon)
+
+# Convert the image to RGB and display it
+pixel_framebuf.image(image.convert("RGB"))
+pixel_framebuf.display()

examples/pixel_framebuf_pillow_image.py

@@ -4,5 +4,5 @@
 # SPDX-License-Identifier: MIT
 
 Adafruit-Blinka
-adafruit-circuitpython-framebuf
+adafruit-circuitpython-framebuf>=1.4.2
 adafruit-circuitpython-led-animation

requirements.txt

@@ -36,7 +36,7 @@
     author_email="[email protected]",
     install_requires=[
         "Adafruit-Blinka",
-        "adafruit-circuitpython-framebuf",
+        "adafruit-circuitpython-framebuf>=1.4.2",
         "adafruit-circuitpython-led-animation",
     ],
     # Choose your license