try:
    import framebuf
except ImportError:
    print("SKIP")
    raise SystemExit

w = 5
h = 16
size = w * h // 8
buf = bytearray(size)
maps = {framebuf.MONO_VLSB : 'MONO_VLSB',
        framebuf.MONO_HLSB : 'MONO_HLSB',
        framebuf.MONO_HMSB : 'MONO_HMSB'}

for mapping in maps.keys():
    for x in range(size):
        buf[x] = 0
    fbuf = framebuf.FrameBuffer(buf, w, h, mapping)
    print(maps[mapping])
    # access as buffer
    print(memoryview(fbuf)[0])

    # fill
    fbuf.fill(1)
    print(buf)
    fbuf.fill(0)
    print(buf)

    # put pixel
    fbuf.pixel(0, 0, 1)
    fbuf.pixel(4, 0, 1)
    fbuf.pixel(0, 15, 1)
    fbuf.pixel(4, 15, 1)
    print(buf)

    # clear pixel
    fbuf.pixel(4, 15, 0)
    print(buf)

    # get pixel
    print(fbuf.pixel(0, 0), fbuf.pixel(1, 1))

    # hline
    fbuf.fill(0)
    fbuf.hline(0, 1, w, 1)
    print('hline', buf)

    # vline
    fbuf.fill(0)
    fbuf.vline(1, 0, h, 1)
    print('vline', buf)

    # rect
    fbuf.fill(0)
    fbuf.rect(1, 1, 3, 3, 1)
    print('rect', buf)

    #fill rect
    fbuf.fill(0)
    fbuf.fill_rect(0, 0, 0, 3, 1) # zero width, no-operation
    fbuf.fill_rect(1, 1, 3, 3, 1)
    print('fill_rect', buf)

    # line
    fbuf.fill(0)
    fbuf.line(1, 1, 3, 3, 1)
    print('line', buf)

    # line steep negative gradient
    fbuf.fill(0)
    fbuf.line(3, 3, 2, 1, 1)
    print('line', buf)

    # scroll
    fbuf.fill(0)
    fbuf.pixel(2, 7, 1)
    fbuf.scroll(0, 1)
    print(buf)
    fbuf.scroll(0, -2)
    print(buf)
    fbuf.scroll(1, 0)
    print(buf)
    fbuf.scroll(-1, 0)
    print(buf)
    fbuf.scroll(2, 2)
    print(buf)

    # print text
    fbuf.fill(0)
    fbuf.text("hello", 0, 0, 1)
    print(buf)
    fbuf.text("hello", 0, 0, 0) # clear
    print(buf)

    # char out of font range set to chr(127)
    fbuf.text(str(chr(31)), 0, 0)
    print(buf)
    print()

# test invalid constructor, and stride argument
try:
    fbuf = framebuf.FrameBuffer(buf, w, h, -1, w)
except ValueError:
    print("ValueError")

# test legacy constructor
fbuf = framebuf.FrameBuffer1(buf, w, h)
fbuf = framebuf.FrameBuffer1(buf, w, h, w)
print(framebuf.MVLSB == framebuf.MONO_VLSB)
