Add display-text.py

just a simple script to scroll some text across the UnicornHAT HD

Author: mapitman

display-text.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+
+import colorsys
+import time
+import sys
+import getopt
+from sys import exit
+import signal
+import os
+
+try:
+    from PIL import Image, ImageDraw, ImageFont
+except ImportError:
+    exit('This script requires the pillow module\nInstall with: sudo pip install pillow')
+
+import unicornhathd
+
+
+def sig_handler(signum, frame):
+    unicornhathd.off()
+    sys.exit(0)
+
+def run_ticker(bg_color, text):
+    FONT = ("DejaVuSans-Bold.ttf", 10)
+    unicornhathd.rotation(90)
+    unicornhathd.brightness(0.6)
+    width, height = unicornhathd.get_shape()
+    text_x = width
+    text_y = 2
+    font_file, font_size = FONT
+    font = ImageFont.truetype(font_file, font_size)
+    text_width, text_height = width, 0
+    w, h = font.getsize(text)
+    text_width += w + width
+    text_height = max(text_height, h)
+    text_width += width + text_x + 1
+
+    image = Image.new('RGB', (text_width, max(16, text_height)), color)
+    draw = ImageDraw.Draw(image)
+    offset_left = 0
+    draw.text((text_x + offset_left, text_y), text, fill="white", font=font)
+    offset_left += font.getsize(text)[0] + width
+    while True:
+        for scroll in range(text_width - width):
+            for x in range(width):
+                for y in range(height):
+                    pixel = image.getpixel((x + scroll, y))
+                    r, g, b = [int(n) for n in pixel]
+                    unicornhathd.set_pixel(width - 1 - x, y, r, g, b)
+
+            unicornhathd.show()
+            time.sleep(0.01)
+
+signal.signal(signal.SIGTERM, sig_handler)
+
+try:
+    opts, args = getopt.getopt(sys.argv[1:], "c:", ["color"])
+    color = "black"
+
+    for opt, arg in opts:
+        if opt in ("-c", "--color"):
+            color = arg
+
+    text = args[0]
+    run_ticker(color, text)
+
+except getopt.GetoptError:
+    print("display-text.py -c <hex color|color name> <text>")
+    sys.exit(2)
+except KeyboardInterrupt:
+    unicornhathd.off()
+
+finally:
+    unicornhathd.off()