add advanced cursor+btns+txt demo example

Author: brentru

examples/cursor_buttons_text.py

@@ -0,0 +1,143 @@
+import adafruit_cursor
+import board
+import digitalio
+import displayio
+from adafruit_bitmap_font import bitmap_font
+from adafruit_button import Button
+from adafruit_display_text import label
+from gamepadshift import GamePadShift
+from micropython import const
+
+# PyBadge Button Masks
+BUTTON_LEFT = const(128)
+BUTTON_UP = const(64)
+BUTTON_DOWN = const(32)
+BUTTON_RIGHT = const(16)
+BUTTON_A = const(2)
+BUTTON_B = const(1)
+
+# Initialize PyBadge Gamepad
+pad = GamePadShift(digitalio.DigitalInOut(board.BUTTON_CLOCK),
+                   digitalio.DigitalInOut(board.BUTTON_OUT),
+                   digitalio.DigitalInOut(board.BUTTON_LATCH))
+
+# Load the font
+THE_FONT = "/fonts/Arial-12.bdf"
+font = bitmap_font.load_font(THE_FONT)
+
+# Create the display
+display = board.DISPLAY
+
+# Create the display context
+splash = displayio.Group(max_size=22)
+
+##########################################################################
+# Make a background color fill
+
+color_bitmap = displayio.Bitmap(320, 240, 1)
+color_palette = displayio.Palette(1)
+color_palette[0] = 0x404040
+bg_sprite = displayio.TileGrid(color_bitmap,
+                               pixel_shader=color_palette,
+                               x=0, y=0)
+splash.append(bg_sprite)
+
+##########################################################################
+
+# Set up button size info
+BUTTON_WIDTH = 80
+BUTTON_HEIGHT = 40
+BUTTON_MARGIN = 20
+
+# Create the buttons
+buttons = []
+
+button_speed_inc = Button(x=BUTTON_MARGIN, y=BUTTON_MARGIN+BUTTON_HEIGHT,
+                          width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                          label="+ Speed", label_font=font)
+buttons.append(button_speed_inc)
+
+button_speed_dec = Button(x=BUTTON_MARGIN, y=BUTTON_MARGIN*4+BUTTON_HEIGHT,
+                          width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                          label="- Speed", label_font=font)
+buttons.append(button_speed_dec)
+
+button_scale_pos = Button(x=BUTTON_MARGIN*3+2*BUTTON_WIDTH, y=BUTTON_MARGIN+BUTTON_HEIGHT,
+                          width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                          label="+ Scale", label_font=font, style=Button.SHADOWRECT)
+buttons.append(button_scale_pos)
+
+button_scale_neg = Button(x=BUTTON_MARGIN*3+2*BUTTON_WIDTH, y=BUTTON_MARGIN*4+BUTTON_HEIGHT,
+                          width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                          label="- Scale", label_font=font, style=Button.SHADOWRECT)
+buttons.append(button_scale_neg)
+
+# Show the button
+for b in buttons:
+    splash.append(b.group)
+
+# Create a text label
+text_label = label.Label(font, text="CircuitPython Cursor!", color=0x00FF00,
+                         x = 100, y = 20)
+splash.append(text_label)
+
+text_speed = label.Label(font, max_glyphs = 15, color=0x00FF00,
+                         x = 120, y = 40)
+splash.append(text_speed)
+
+text_scale = label.Label(font, max_glyphs = 15, color=0x00FF00,
+                         x = 120, y = 60)
+splash.append(text_scale)
+
+# initialize the mouse cursor object
+mouse_cursor = adafruit_cursor.Cursor(display, display_group=splash)
+
+# show displayio group
+display.show(splash)
+
+def check_dpad(d_pad_buttons):
+    """Checks the directional pad for button presses."""
+    if d_pad_buttons & BUTTON_RIGHT:
+        mouse_cursor.x += mouse_cursor.speed
+    elif d_pad_buttons & BUTTON_LEFT:
+        mouse_cursor.x -= mouse_cursor.speed
+    if d_pad_buttons & BUTTON_DOWN:
+        mouse_cursor.y += mouse_cursor.speed
+    elif d_pad_buttons & BUTTON_UP:
+        mouse_cursor.y -= mouse_cursor.speed
+
+is_pressed = False
+while True:
+    display.wait_for_frame()
+    text_speed.text = 'Speed: {0}px'.format(mouse_cursor.speed)
+    text_scale.text = 'Scale: {0}px'.format(mouse_cursor.scale)
+    pressed = pad.get_pressed()
+    check_dpad(pressed)
+    if is_pressed:
+        if not pressed & (BUTTON_A | BUTTON_B):
+            # buttons de-pressed
+            is_pressed = False
+            for i, b in enumerate(buttons):
+                b.selected=False
+        # otherwise, continue holding
+        continue
+    if pressed & BUTTON_B:
+        is_pressed = True
+        if mouse_cursor.hide:
+            mouse_cursor.hide = False
+        else:
+            mouse_cursor.hide = True
+    if pressed & BUTTON_A:
+        is_pressed = True
+        for i, b in enumerate(buttons):
+            if b.contains((mouse_cursor.x, mouse_cursor.y)):
+                print("Button %d pressed"%i)
+                if i == 0: # Increase the cursor speed
+                    mouse_cursor.speed += 1
+                elif i == 1: # Decrease the cursor speed
+                    mouse_cursor.speed -= 1
+                if i == 2: # Increase the cursor scale
+                    mouse_cursor.scale += 1
+                elif i == 3: # Decrease the cursor scale
+                    mouse_cursor.scale -= 1
+                b.selected=True