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Add transparency support to all image types (#4600)
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guillempages
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@@ -22,26 +22,55 @@ MULTI_CONF = True
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ImageType = display.display_ns.enum("ImageType")
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IMAGE_TYPE = {
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"BINARY": ImageType.IMAGE_TYPE_BINARY,
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"TRANSPARENT_BINARY": ImageType.IMAGE_TYPE_BINARY,
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"GRAYSCALE": ImageType.IMAGE_TYPE_GRAYSCALE,
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"RGB24": ImageType.IMAGE_TYPE_RGB24,
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"TRANSPARENT_BINARY": ImageType.IMAGE_TYPE_TRANSPARENT_BINARY,
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"RGB565": ImageType.IMAGE_TYPE_RGB565,
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"TRANSPARENT_IMAGE": ImageType.IMAGE_TYPE_TRANSPARENT_BINARY,
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"RGB24": ImageType.IMAGE_TYPE_RGB24,
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"RGBA": ImageType.IMAGE_TYPE_RGBA,
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}
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CONF_USE_TRANSPARENCY = "use_transparency"
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Image_ = display.display_ns.class_("Image")
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def validate_cross_dependencies(config):
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"""
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Validate fields whose possible values depend on other fields.
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For example, validate that explicitly transparent image types
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have "use_transparency" set to True.
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Also set the default value for those kind of dependent fields.
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"""
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image_type = config[CONF_TYPE]
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is_transparent_type = image_type in ["TRANSPARENT_BINARY", "RGBA"]
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# If the use_transparency option was not specified, set the default depending on the image type
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if CONF_USE_TRANSPARENCY not in config:
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config[CONF_USE_TRANSPARENCY] = is_transparent_type
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if is_transparent_type and not config[CONF_USE_TRANSPARENCY]:
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raise cv.Invalid(f"Image type {image_type} must always be transparent.")
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return config
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IMAGE_SCHEMA = cv.Schema(
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{
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cv.Required(CONF_ID): cv.declare_id(Image_),
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cv.Required(CONF_FILE): cv.file_,
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cv.Optional(CONF_RESIZE): cv.dimensions,
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cv.Optional(CONF_TYPE, default="BINARY"): cv.enum(IMAGE_TYPE, upper=True),
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cv.Optional(CONF_DITHER, default="NONE"): cv.one_of(
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"NONE", "FLOYDSTEINBERG", upper=True
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),
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cv.GenerateID(CONF_RAW_DATA_ID): cv.declare_id(cg.uint8),
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}
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cv.All(
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{
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cv.Required(CONF_ID): cv.declare_id(Image_),
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cv.Required(CONF_FILE): cv.file_,
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cv.Optional(CONF_RESIZE): cv.dimensions,
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cv.Optional(CONF_TYPE, default="BINARY"): cv.enum(IMAGE_TYPE, upper=True),
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# Not setting default here on purpose; the default depends on the image type,
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# and thus will be set in the "validate_cross_dependencies" validator.
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cv.Optional(CONF_USE_TRANSPARENCY): cv.boolean,
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cv.Optional(CONF_DITHER, default="NONE"): cv.one_of(
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"NONE", "FLOYDSTEINBERG", upper=True
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),
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cv.GenerateID(CONF_RAW_DATA_ID): cv.declare_id(cg.uint8),
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},
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validate_cross_dependencies,
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)
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)
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CONFIG_SCHEMA = cv.All(font.validate_pillow_installed, IMAGE_SCHEMA)
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@@ -64,72 +93,113 @@ async def to_code(config):
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else:
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if width > 500 or height > 500:
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_LOGGER.warning(
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"The image you requested is very big. Please consider using"
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" the resize parameter."
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'The image "%s" you requested is very big. Please consider'
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" using the resize parameter.",
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path,
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)
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transparent = config[CONF_USE_TRANSPARENCY]
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dither = Image.NONE if config[CONF_DITHER] == "NONE" else Image.FLOYDSTEINBERG
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if config[CONF_TYPE] == "GRAYSCALE":
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image = image.convert("L", dither=dither)
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image = image.convert("LA", dither=dither)
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pixels = list(image.getdata())
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data = [0 for _ in range(height * width)]
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pos = 0
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for pix in pixels:
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data[pos] = pix
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for g, a in pixels:
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if transparent:
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if g == 1:
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g = 0
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if a < 0x80:
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g = 1
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data[pos] = g
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pos += 1
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elif config[CONF_TYPE] == "RGBA":
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image = image.convert("RGBA")
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pixels = list(image.getdata())
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data = [0 for _ in range(height * width * 4)]
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pos = 0
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for r, g, b, a in pixels:
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data[pos] = r
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pos += 1
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data[pos] = g
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pos += 1
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data[pos] = b
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pos += 1
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data[pos] = a
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pos += 1
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elif config[CONF_TYPE] == "RGB24":
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image = image.convert("RGB")
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image = image.convert("RGBA")
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pixels = list(image.getdata())
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data = [0 for _ in range(height * width * 3)]
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pos = 0
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for pix in pixels:
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data[pos] = pix[0]
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for r, g, b, a in pixels:
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if transparent:
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if r == 0 and g == 0 and b == 1:
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b = 0
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if a < 0x80:
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r = 0
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g = 0
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b = 1
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data[pos] = r
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pos += 1
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data[pos] = pix[1]
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data[pos] = g
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pos += 1
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data[pos] = pix[2]
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data[pos] = b
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pos += 1
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elif config[CONF_TYPE] == "RGB565":
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image = image.convert("RGB")
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elif config[CONF_TYPE] in ["RGB565"]:
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image = image.convert("RGBA")
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pixels = list(image.getdata())
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data = [0 for _ in range(height * width * 3)]
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data = [0 for _ in range(height * width * 2)]
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pos = 0
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for pix in pixels:
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R = pix[0] >> 3
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G = pix[1] >> 2
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B = pix[2] >> 3
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for r, g, b, a in pixels:
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R = r >> 3
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G = g >> 2
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B = b >> 3
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rgb = (R << 11) | (G << 5) | B
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if transparent:
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if rgb == 0x0020:
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rgb = 0
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if a < 0x80:
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rgb = 0x0020
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data[pos] = rgb >> 8
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pos += 1
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data[pos] = rgb & 255
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data[pos] = rgb & 0xFF
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pos += 1
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elif (config[CONF_TYPE] == "BINARY") or (config[CONF_TYPE] == "TRANSPARENT_BINARY"):
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elif config[CONF_TYPE] in ["BINARY", "TRANSPARENT_BINARY"]:
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if transparent:
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alpha = image.split()[-1]
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has_alpha = alpha.getextrema()[0] < 0xFF
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_LOGGER.debug("%s Has alpha: %s", config[CONF_ID], has_alpha)
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image = image.convert("1", dither=dither)
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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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elif config[CONF_TYPE] == "TRANSPARENT_IMAGE":
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image = image.convert("RGBA")
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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 not image.getpixel((x, y))[3]:
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if transparent and has_alpha:
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a = alpha.getpixel((x, y))
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if not a:
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continue
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elif 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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else:
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raise core.EsphomeError(
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f"Image f{config[CONF_ID]} has an unsupported type: {config[CONF_TYPE]}."
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)
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rhs = [HexInt(x) for x in data]
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prog_arr = cg.progmem_array(config[CONF_RAW_DATA_ID], rhs)
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cg.new_Pvariable(
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var = cg.new_Pvariable(
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config[CONF_ID], prog_arr, width, height, IMAGE_TYPE[config[CONF_TYPE]]
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)
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cg.add(var.set_transparency(transparent))
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