'''
 @filename   :   main.cpp
 @brief      :   1.54inch e-paper display demo
 @author     :   Yehui from Waveshare

 Copyright (C) Waveshare     September 9 2017

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documnetation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to  whom the Software is
furished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
'''

import epd1in54
import time
from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont


def main():
    epd = epd1in54.EPD()
    epd.init(epd.lut_full_update)

    # For simplicity, the arguments are explicit numerical coordinates
    image = Image.new(
        '1',
        (epd1in54.EPD_WIDTH, epd1in54.EPD_HEIGHT),
        255  # 255: clear the frame
    )
    draw = ImageDraw.Draw(image)
    font = ImageFont.truetype(
        '/usr/share/fonts/truetype/freefont/FreeMonoBold.ttf',
        24
    )
    draw.rectangle((0, 10, 200, 34), fill=0)
    draw.text((8, 12), 'Hello world!', font=font, fill=255)
    draw.text((8, 36), 'e-Paper Demo', font=font, fill=0)
    draw.line((16, 60, 56, 60), fill=0)
    draw.line((56, 60, 56, 110), fill=0)
    draw.line((16, 110, 56, 110), fill=0)
    draw.line((16, 110, 16, 60), fill=0)
    draw.line((16, 60, 56, 110), fill=0)
    draw.line((56, 60, 16, 110), fill=0)
    draw.arc((90, 60, 150, 120), 0, 360, fill=0)
    draw.rectangle((16, 130, 56, 180), fill=0)
    draw.chord((90, 130, 150, 190), 0, 360, fill=0)

    epd.clear_frame_memory(0xFF)
    epd.set_frame_memory(image, 0, 0)
    epd.display_frame()

    epd.delay_ms(2000)

    # for partial update
    epd.init(epd.lut_partial_update)
    image = Image.open('monocolor.bmp')
    '''
    there are 2 memory areas embedded in the e-paper display
    and once the display is refreshed, the memory area will be auto-toggled,
    i.e. the next action of SetFrameMemory will set the other memory area
    therefore you have to set the frame memory twice.
    '''
    epd.set_frame_memory(image, 0, 0)
    epd.display_frame()
    epd.set_frame_memory(image, 0, 0)
    epd.display_frame()

    time_image = Image.new('1', (96, 32), 255)  # 255: clear the frame
    draw = ImageDraw.Draw(time_image)
    font = ImageFont.truetype(
        '/usr/share/fonts/truetype/freefont/FreeMonoBold.ttf',
        32
    )
    image_width, image_height = time_image.size
    while True:
        # draw a rectangle to clear the image
        draw.rectangle((0, 0, image_width, image_height), fill=255)
        draw.text((0, 0), time.strftime('%M:%S'), font=font, fill=0)
        epd.set_frame_memory(time_image.rotate(90), 80, 80)
        epd.display_frame()


if __name__ == '__main__':
    main()
