# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
# SPDX-FileCopyrightText: Copyright (c) 2021 ladyada for Adafruit Industries
#
# SPDX-License-Identifier: Unlicense

import board
import busio
import displayio
import fourwire
import terminalio
from adafruit_display_text import label
import adafruit_displayio_sh1106

displayio.release_displays()

spi = busio.SPI(board.SCK, board.MOSI)
display_bus = fourwire.FourWire(
    spi,
    command=board.OLED_DC,
    chip_select=board.OLED_CS,
    reset=board.OLED_RESET,
    baudrate=1000000,
)

WIDTH = 128
HEIGHT = 64
BORDER = 5
display = adafruit_displayio_sh1106.SH1106(display_bus, width=WIDTH, height=HEIGHT)

# Make the display context
splash = displayio.Group()
display.root_group = splash

color_bitmap = displayio.Bitmap(WIDTH, HEIGHT, 1)
color_palette = displayio.Palette(1)
color_palette[0] = 0xFFFFFF  # White

bg_sprite = displayio.TileGrid(color_bitmap, pixel_shader=color_palette, x=0, y=0)
splash.append(bg_sprite)

# Draw a smaller inner rectangle
inner_bitmap = displayio.Bitmap(WIDTH - BORDER * 2, HEIGHT - BORDER * 2, 1)
inner_palette = displayio.Palette(1)
inner_palette[0] = 0x000000  # Black
inner_sprite = displayio.TileGrid(
    inner_bitmap, pixel_shader=inner_palette, x=BORDER, y=BORDER
)
splash.append(inner_sprite)

# Draw a label
text = "Hello World!"
text_area = label.Label(
    terminalio.FONT, text=text, color=0xFFFFFF, x=28, y=HEIGHT // 2 - 1
)
splash.append(text_area)

while True:
    pass
