Merge pull request #101 from FoamyGuy/add_magtag_example

Adding MagTag example

Author: ladyada

examples/display_text_magtag.py

@@ -0,0 +1,68 @@
+"""
+Basic display_text.label example script
+adapted for use on MagTag.
+"""
+import time
+import board
+import displayio
+import terminalio
+from adafruit_display_text import label
+
+# 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
+
+# wait until we can draw
+time.sleep(display.time_to_refresh)
+
+# main group to hold everything
+main_group = displayio.Group()
+
+# white background. Scaled to save RAM
+bg_bitmap = displayio.Bitmap(display.width // 8, display.height // 8, 1)
+bg_palette = displayio.Palette(1)
+bg_palette[0] = 0xFFFFFF
+bg_sprite = displayio.TileGrid(bg_bitmap, x=0, y=0, pixel_shader=bg_palette)
+bg_group = displayio.Group(scale=8)
+bg_group.append(bg_sprite)
+main_group.append(bg_group)
+
+# first example label
+TEXT = "Hello world"
+text_area = label.Label(
+    terminalio.FONT,
+    text=TEXT,
+    color=0xFFFFFF,
+    background_color=0x666666,
+    padding_top=1,
+    padding_bottom=3,
+    padding_right=4,
+    padding_left=4,
+)
+text_area.x = 10
+text_area.y = 14
+main_group.append(text_area)
+
+# second example label
+another_text = label.Label(
+    terminalio.FONT,
+    scale=2,
+    text="MagTag display_text\nexample",
+    color=0x000000,
+    background_color=0x999999,
+    padding_top=1,
+    padding_bottom=3,
+    padding_right=4,
+    padding_left=4,
+)
+# centered
+another_text.anchor_point = (0.5, 0.5)
+another_text.anchored_position = (display.width // 2, display.height // 2)
+main_group.append(another_text)
+
+# show the main group and refresh.
+display.show(main_group)
+display.refresh()
+while True:
+    pass