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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2014-18 Richard Hull and contributors
# See LICENSE.rst for details.
import pytest
from PIL import Image
from luma.core.device import dummy
from luma.core.virtual import sevensegment
from helpers import get_reference_image, assert_identical_image
_DIGITS = {
' ': 0x00,
'-': 0x01,
'_': 0x08,
'\'': 0x02,
'0': 0x7e,
'1': 0x30,
'2': 0x6d,
'3': 0x79,
'4': 0x33,
'5': 0x5b,
'6': 0x5f,
'7': 0x70,
'8': 0x7f,
'9': 0x7b,
'a': 0x7d,
'b': 0x1f,
'c': 0x0d,
'd': 0x3d,
'e': 0x6f,
'f': 0x47,
'g': 0x7b,
'h': 0x17,
'i': 0x10,
'j': 0x18,
# 'k': cant represent
'l': 0x06,
# 'm': cant represent
'n': 0x15,
'o': 0x1d,
'p': 0x67,
'q': 0x73,
'r': 0x05,
's': 0x5b,
't': 0x0f,
'u': 0x1c,
'v': 0x1c,
# 'w': cant represent
# 'x': cant represent
'y': 0x3b,
'z': 0x6d,
'A': 0x77,
'B': 0x7f,
'C': 0x4e,
'D': 0x7e,
'E': 0x4f,
'F': 0x47,
'G': 0x5e,
'H': 0x37,
'I': 0x30,
'J': 0x38,
# 'K': cant represent
'L': 0x0e,
# 'M': cant represent
'N': 0x76,
'O': 0x7e,
'P': 0x67,
'Q': 0x73,
'R': 0x46,
'S': 0x5b,
'T': 0x0f,
'U': 0x3e,
'V': 0x3e,
# 'W': cant represent
# 'X': cant represent
'Y': 0x3b,
'Z': 0x6d,
',': 0x80,
'.': 0x80
}
def dot_muncher(text, notfound="_"):
undefined = _DIGITS[notfound]
iterator = iter(text)
try:
last = _DIGITS.get(next(iterator), undefined)
except StopIteration:
# Catch exception from next() in py3.7 and return normally
return
try:
while True:
curr = _DIGITS.get(next(iterator), undefined)
if curr == 0x80:
yield curr | last
elif last != 0x80:
yield last
last = curr
except StopIteration:
if last != 0x80:
yield last
def test_init():
device = dummy(width=24, height=8, mode="1")
sevensegment(device, segment_mapper=dot_muncher)
assert device.image == Image.new("1", (24, 8))
def test_overflow():
device = dummy(width=24, height=8, mode="1")
seg = sevensegment(device, segment_mapper=dot_muncher)
with pytest.raises(OverflowError) as ex:
seg.text = "This is too big to fit in 3x8 seven-segment displays"
assert str(ex.value) == "Device's capabilities insufficient for value 'This is too big to fit in 3x8 seven-segment displays'"
def test_setter_getter():
img_path = get_reference_image('golden_ratio.png')
with open(img_path, 'rb') as img:
reference = Image.open(img)
device = dummy(width=24, height=8)
seg = sevensegment(device, segment_mapper=dot_muncher)
seg.text = "1.61803398875"
assert str(seg.text) == "1.61803398875"
#assert_identical_image(reference, device.image, img_path)
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