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try:
import framebuf
except ImportError:
print("SKIP")
raise SystemExit
def printbuf():
print("--8<--")
bytes_per_row = w // 2
for y in range(h):
for x in range(bytes_per_row):
print("%02x" % buf[(x + y * bytes_per_row)], end="")
print()
print("-->8--")
w = 10
h = 10
buf = bytearray(w * h // 2)
fbuf = framebuf.FrameBuffer(buf, w, h, framebuf.GS4_HMSB)
def prepare_buffer():
fbuf.fill(0)
fbuf.rect(2, 0, 6, 10, 0x07, True)
fbuf.rect(0, 2, 10, 6, 0x01, True)
prepare_buffer()
printbuf()
fbuf.scroll(5, -1)
printbuf()
prepare_buffer()
fbuf.scroll(-5, 5)
printbuf()
prepare_buffer()
# Scrolling by at least the size of buffer, no change to buffer.
fbuf.scroll(15, 7)
fbuf.scroll(10, -1)
fbuf.scroll(1, -10)
printbuf()
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