Replace bitcoin demo with text only quote demo

docs/examples.rst

@@ -10,6 +10,6 @@ Ensure your device works with this simple test.
 Other Demos
 ------------
 
-.. literalinclude:: ../examples/magtag_bitcoin_demo.py
-    :caption: examples/magtag_bitcoin_demo.py
+.. literalinclude:: ../examples/magtag_quote_demo.py
+    :caption: examples/magtag_quote_demo.py
     :linenos:

examples/magtag_quote_demo.py

@@ -0,0 +1,64 @@
+# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+import os
+import time
+from adafruit_magtag.magtag import MagTag
+
+# Set up where we'll be fetching data from
+DATA_SOURCE = "https://www.adafruit.com/api/quotes.php"
+QUOTE_LOCATION = [0, "text"]
+AUTHOR_LOCATION = [0, "author"]
+
+# the current working directory (where this file is)
+try:
+    cwd = os.path.dirname(os.path.realpath(__file__))
+except AttributeError:
+    cwd = ("/" + __file__).rsplit("/", 1)[0]
+
+magtag = MagTag(
+    url=DATA_SOURCE,
+    json_path=(QUOTE_LOCATION, AUTHOR_LOCATION),
+    default_bg=0x000000,
+)
+
+
+def add_quote_marks(quote_text):
+    return f'"{quote_text}"'
+
+
+def add_hyphen(author_name):
+    return f"- {author_name}"
+
+
+magtag.add_text(
+    text_position=(
+        (magtag.graphics.display.width // 2) - 1,
+        (magtag.graphics.display.height // 2) - 20,
+    ),
+    text_color=0xFFFFFF,
+    text_wrap=44,
+    text_maxlen=180,
+    line_spacing=1.0,
+    text_transform=add_quote_marks,
+    text_anchor_point=(0.5, 0.5),
+)
+
+magtag.add_text(
+    text_position=(
+        (magtag.graphics.display.width // 2) - 120,
+        (magtag.graphics.display.height // 2) + 34,
+    ),
+    text_color=0xFFFFFF,
+    text_wrap=0,
+    text_maxlen=30,
+    text_transform=add_hyphen,
+)
+
+while True:
+    try:
+        value = magtag.fetch()
+        print("Response is", value)
+    except (ValueError, RuntimeError) as e:
+        print("Some error occured, retrying! -", e)
+    time.sleep(180)