add sprite_button example for TFT Featherwing

simple menu button demo specifically for TFT featherwing touch display

Author: DJDevon3

examples/sprite_button_tft_featherwing_simpletest.py

@@ -0,0 +1,73 @@
+import displayio
+import terminalio
+import board
+import digitalio
+import time
+from adafruit_hx8357 import HX8357  # TFT Featherwing display driver
+import adafruit_stmpe610  # TFT Featherwing V1 touch driver
+from adafruit_display_text import label
+from adafruit_bitmap_font import bitmap_font
+from adafruit_button.sprite_button import SpriteButton
+
+# 3.5" TFT Featherwing is 480x320
+displayio.release_displays()
+DISPLAY_WIDTH = 480
+DISPLAY_HEIGHT = 320
+
+# Initialize TFT Display
+spi = board.SPI()
+tft_cs = board.D9
+tft_dc = board.D10
+display_bus = displayio.FourWire(spi, command=tft_dc, chip_select=tft_cs)
+display = HX8357(display_bus, width=DISPLAY_WIDTH, height=DISPLAY_HEIGHT)
+display.rotation = 0
+_touch_flip = (False, True)
+
+# Initialize 3.5" TFT Featherwing Touchscreen
+ts_cs_pin = digitalio.DigitalInOut(board.D6)
+touchscreen = adafruit_stmpe610.Adafruit_STMPE610_SPI(
+    board.SPI(),
+    ts_cs_pin,
+    calibration=((231, 3703), (287, 3787)),
+    size=(display.width, display.height),
+    disp_rotation=display.rotation,
+    touch_flip=_touch_flip,
+)
+
+TEXT_WHITE = 0xFFFFFF
+
+# --| Button Config |--
+BUTTON_WIDTH = 7 * 16
+BUTTON_HEIGHT = 2 * 16
+BUTTON_MARGIN = 5
+
+# Defiine the button
+button = SpriteButton(
+    x=BUTTON_MARGIN,
+    y=BUTTON_MARGIN,
+    width=BUTTON_WIDTH,
+    height=BUTTON_HEIGHT,
+    label="MENU",
+    label_font=terminalio.FONT,
+    label_color=TEXT_WHITE,
+    bmp_path="icons/gradient_button_0.bmp",
+    selected_bmp_path="icons/gradient_button_1.bmp",
+    transparent_index=0,
+)
+
+main_group = displayio.Group()
+main_group.append(button)
+display.root_group = main_group
+
+while True:
+    p = touchscreen.touch_point
+    if p:
+        if button.contains(p):
+            if not button.selected:
+                button.selected = True
+                time.sleep(0.25) # Wait a bit so we can see the button color change
+                print("Button Pressed")
+        else:
+            button.selected = False  # When touch moves outside of button
+    else:
+        button.selected = False  # When button is released