mirror of https://github.com/esphome/esphome.git
64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
# coding=utf-8
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import logging
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import voluptuous as vol
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from esphome import core
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from esphome.components import display, font
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import esphome.config_validation as cv
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from esphome.const import CONF_FILE, CONF_ID, CONF_RESIZE
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from esphome.core import CORE, HexInt
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from esphome.cpp_generator import Pvariable, progmem_array, safe_exp
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from esphome.cpp_types import App, uint8
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_LOGGER = logging.getLogger(__name__)
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DEPENDENCIES = ['display']
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MULTI_CONF = True
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Image_ = display.display_ns.class_('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(uint8),
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})
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CONFIG_SCHEMA = vol.All(font.validate_pillow_installed, IMAGE_SCHEMA)
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def to_code(config):
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from PIL import Image
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path = CORE.relative_path(config[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.EsphomeError(u"Could not load image file {}: {}".format(path, e))
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if CONF_RESIZE in config:
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image.thumbnail(config[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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rhs = safe_exp([HexInt(x) for x in data])
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prog_arr = progmem_array(config[CONF_RAW_DATA_ID], rhs)
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rhs = App.make_image(prog_arr, width, height)
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Pvariable(config[CONF_ID], rhs)
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