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66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
# coding=utf-8
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import logging
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import voluptuous as vol
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import esphomeyaml.config_validation as cv
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from esphomeyaml import core
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from esphomeyaml.components import display, font
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from esphomeyaml.const import CONF_FILE, CONF_ID, CONF_RESIZE
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from esphomeyaml.core import HexInt
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from esphomeyaml.helpers import App, ArrayInitializer, MockObj, Pvariable, RawExpression, add, \
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relative_path
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_LOGGER = logging.getLogger(__name__)
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DEPENDENCIES = ['display']
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Image_ = display.display_ns.Image
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CONF_RAW_DATA_ID = 'raw_data_id'
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IMAGE_SCHEMA = vol.Schema({
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vol.Required(CONF_ID): cv.declare_variable_id(Image_),
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vol.Required(CONF_FILE): cv.file_,
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vol.Optional(CONF_RESIZE): cv.dimensions,
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cv.GenerateID(CONF_RAW_DATA_ID): cv.declare_variable_id(None),
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})
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CONFIG_SCHEMA = vol.All(font.validate_pillow_installed, cv.ensure_list, [IMAGE_SCHEMA])
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def to_code(config):
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from PIL import Image
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for conf in config:
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path = relative_path(conf[CONF_FILE])
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try:
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image = Image.open(path)
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except Exception as e:
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raise core.ESPHomeYAMLError(u"Could not load image file {}: {}".format(path, e))
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if CONF_RESIZE in conf:
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image.thumbnail(conf[CONF_RESIZE])
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image = image.convert('1', dither=Image.NONE)
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width, height = image.size
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if width > 500 or height > 500:
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_LOGGER.warning("The image you requested is very big. Please consider using the resize "
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"parameter")
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width8 = ((width + 7) // 8) * 8
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data = [0 for _ in range(height * width8 // 8)]
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for y in range(height):
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for x in range(width):
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if image.getpixel((x, y)):
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continue
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pos = x + y * width8
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data[pos // 8] |= 0x80 >> (pos % 8)
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raw_data = MockObj(conf[CONF_RAW_DATA_ID])
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add(RawExpression('static const uint8_t {}[{}] PROGMEM = {}'.format(
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raw_data, len(data),
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ArrayInitializer(*[HexInt(x) for x in data], multiline=False))))
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rhs = App.make_image(raw_data, width, height)
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Pvariable(conf[CONF_ID], rhs)
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