adding wrap_pixels example

Author: FoamyGuy

examples/display_text_wrap_pixels_test.py

@@ -0,0 +1,61 @@
+# SPDX-FileCopyrightText: 2021 Tim C, written for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+"""
+Test the wrap_text_to_pixels function. Try changing WRAP_WIDTH or text
+and observe the results. The red bar represents the full size of
+WRAP_WIDTH.
+"""
+
+import board
+import displayio
+import terminalio
+from adafruit_display_text import label, wrap_text_to_pixels
+
+WRAP_WIDTH = 140
+text = (
+    "CircuitPython is a programming language designed to simplify experimenting "
+    "and learning to code on low-cost microcontroller boards. "
+)
+
+# use built in display (PyPortal, PyGamer, PyBadge, CLUE, etc.)
+# see guide for setting up external displays (TFT / OLED breakouts, RGB matrices, etc.)
+# https://learn.adafruit.com/circuitpython-display-support-using-displayio/display-and-display-bus
+display = board.DISPLAY
+
+# Make the display context
+main_group = displayio.Group(max_size=10)
+display.show(main_group)
+
+font = terminalio.FONT
+
+print(text)
+print(display.width)
+
+text_area = label.Label(
+    font, text=wrap_text_to_pixels(text, WRAP_WIDTH, font), background_color=0x0000DD
+)
+
+text_area.anchor_point = (0, 0)
+text_area.anchored_position = (0, 0)
+
+main_group.append(text_area)
+
+# Create a bitmap with two colors
+size_checker = displayio.Bitmap(WRAP_WIDTH, 10, 2)
+# Create a two color palette
+palette = displayio.Palette(2)
+palette[0] = 0x0000DD
+palette[1] = 0xDD0000
+
+# Create a TileGrid using the Bitmap and Palette
+tile_grid = displayio.TileGrid(size_checker, pixel_shader=palette)
+
+tile_grid.y = text_area.bounding_box[1] + text_area.bounding_box[3] + 10
+
+size_checker.fill(1)
+
+main_group.append(tile_grid)
+
+while True:
+    pass