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[font] Fix issues with bitmap fonts (#8407)
This commit is contained in:
Clyde Stubbs
Keith Burzinski
parent
1bdf0fdc57
commit
90c96a0a0f
@ -146,6 +146,13 @@ def check_missing_glyphs(file, codepoints, warning: bool = False):
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raise cv.Invalid(message)
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def pt_to_px(pt):
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"""
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Convert a point size to pixels, rounding up to the nearest pixel
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"""
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return (pt + 63) // 64
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def validate_font_config(config):
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"""
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Check for duplicate codepoints, then check that all requested codepoints actually
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@ -172,42 +179,43 @@ def validate_font_config(config):
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)
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# Make setpoints and glyphspoints disjoint
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setpoints.difference_update(glyphspoints)
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if fileconf[CONF_TYPE] == TYPE_LOCAL_BITMAP:
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if any(x >= 256 for x in setpoints.copy().union(glyphspoints)):
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raise cv.Invalid("Codepoints in bitmap fonts must be in the range 0-255")
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else:
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# for TT fonts, check that glyphs are actually present
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# Check extras against their own font, exclude from parent font codepoints
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for extra in config[CONF_EXTRAS]:
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points = {ord(x) for x in flatten(extra[CONF_GLYPHS])}
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glyphspoints.difference_update(points)
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setpoints.difference_update(points)
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check_missing_glyphs(extra[CONF_FILE], points)
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# check that glyphs are actually present
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# Check extras against their own font, exclude from parent font codepoints
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for extra in config[CONF_EXTRAS]:
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points = {ord(x) for x in flatten(extra[CONF_GLYPHS])}
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glyphspoints.difference_update(points)
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setpoints.difference_update(points)
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check_missing_glyphs(extra[CONF_FILE], points)
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# A named glyph that can't be provided is an error
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# A named glyph that can't be provided is an error
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check_missing_glyphs(fileconf, glyphspoints)
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# A missing glyph from a set is a warning.
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if not config[CONF_IGNORE_MISSING_GLYPHS]:
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check_missing_glyphs(fileconf, setpoints, warning=True)
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check_missing_glyphs(fileconf, glyphspoints)
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# A missing glyph from a set is a warning.
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if not config[CONF_IGNORE_MISSING_GLYPHS]:
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check_missing_glyphs(fileconf, setpoints, warning=True)
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# Populate the default after the above checks so that use of the default doesn't trigger errors
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font = FONT_CACHE[fileconf]
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if not config[CONF_GLYPHS] and not config[CONF_GLYPHSETS]:
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if fileconf[CONF_TYPE] == TYPE_LOCAL_BITMAP:
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config[CONF_GLYPHS] = [DEFAULT_GLYPHS]
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else:
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# set a default glyphset, intersected with what the font actually offers
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font = FONT_CACHE[fileconf]
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config[CONF_GLYPHS] = [
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chr(x)
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for x in glyphsets.unicodes_per_glyphset(DEFAULT_GLYPHSET)
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if font.get_char_index(x) != 0
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]
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# set a default glyphset, intersected with what the font actually offers
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config[CONF_GLYPHS] = [
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chr(x)
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for x in glyphsets.unicodes_per_glyphset(DEFAULT_GLYPHSET)
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if font.get_char_index(x) != 0
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]
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if config[CONF_FILE][CONF_TYPE] == TYPE_LOCAL_BITMAP:
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if CONF_SIZE in config:
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if font.has_fixed_sizes:
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sizes = [pt_to_px(x.size) for x in font.available_sizes]
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if not sizes:
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raise cv.Invalid(
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"Size is not a valid option for bitmap fonts, which are inherently fixed size"
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f"Font {FontCache.get_name(fileconf)} has no available sizes"
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)
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if CONF_SIZE not in config:
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config[CONF_SIZE] = sizes[0]
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elif config[CONF_SIZE] not in sizes:
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sizes = ", ".join(str(x) for x in sizes)
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raise cv.Invalid(
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f"Font {FontCache.get_name(fileconf)} only has size{'s' if len(sizes) != 1 else ''} {sizes} available"
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)
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elif CONF_SIZE not in config:
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config[CONF_SIZE] = 20
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@ -215,14 +223,7 @@ def validate_font_config(config):
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return config
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FONT_EXTENSIONS = (".ttf", ".woff", ".otf")
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BITMAP_EXTENSIONS = (".bdf", ".pcf")
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def validate_bitmap_file(value):
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if not any(map(value.lower().endswith, BITMAP_EXTENSIONS)):
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raise cv.Invalid(f"Only {', '.join(BITMAP_EXTENSIONS)} files are supported.")
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return CORE.relative_config_path(cv.file_(value))
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FONT_EXTENSIONS = (".ttf", ".woff", ".otf", "bdf", ".pcf")
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def validate_truetype_file(value):
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@ -246,7 +247,6 @@ def add_local_file(value):
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TYPE_LOCAL = "local"
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TYPE_LOCAL_BITMAP = "local_bitmap"
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TYPE_GFONTS = "gfonts"
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TYPE_WEB = "web"
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LOCAL_SCHEMA = cv.All(
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@ -258,15 +258,6 @@ LOCAL_SCHEMA = cv.All(
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add_local_file,
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)
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LOCAL_BITMAP_SCHEMA = cv.All(
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cv.Schema(
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{
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cv.Required(CONF_PATH): validate_bitmap_file,
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}
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),
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add_local_file,
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)
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FULLPATH_SCHEMA = cv.maybe_simple_value(
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{cv.Required(CONF_PATH): cv.string}, key=CONF_PATH
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)
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@ -403,15 +394,6 @@ def validate_file_shorthand(value):
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}
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)
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extension = Path(value).suffix
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if extension in BITMAP_EXTENSIONS:
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return font_file_schema(
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{
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CONF_TYPE: TYPE_LOCAL_BITMAP,
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CONF_PATH: value,
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}
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)
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return font_file_schema(
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{
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CONF_TYPE: TYPE_LOCAL,
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@ -424,7 +406,6 @@ TYPED_FILE_SCHEMA = cv.typed_schema(
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{
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TYPE_LOCAL: LOCAL_SCHEMA,
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TYPE_GFONTS: GFONTS_SCHEMA,
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TYPE_LOCAL_BITMAP: LOCAL_BITMAP_SCHEMA,
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TYPE_WEB: WEB_FONT_SCHEMA,
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}
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)
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@ -522,11 +503,13 @@ async def to_code(config):
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bpp = config[CONF_BPP]
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mode = ft_pixel_mode_grays
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scale = 256 // (1 << bpp)
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size = config[CONF_SIZE]
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# create the data array for all glyphs
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for codepoint in codepoints:
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font = point_font_map[codepoint]
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if not font.has_fixed_sizes:
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font.set_pixel_sizes(config[CONF_SIZE], 0)
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format = font.get_format().decode("utf-8")
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if format != "PCF":
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font.set_pixel_sizes(size, 0)
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font.load_char(codepoint)
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font.glyph.render(mode)
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width = font.glyph.bitmap.width
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@ -550,17 +533,17 @@ async def to_code(config):
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if pixel & (1 << (bpp - bit_num - 1)):
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glyph_data[pos // 8] |= 0x80 >> (pos % 8)
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pos += 1
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ascender = font.size.ascender // 64
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ascender = pt_to_px(font.size.ascender)
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if ascender == 0:
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if font.has_fixed_sizes:
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ascender = font.available_sizes[0].height
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ascender = size
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else:
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_LOGGER.error(
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"Unable to determine ascender of font %s", config[CONF_FILE]
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)
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glyph_args[codepoint] = GlyphInfo(
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len(data),
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font.glyph.metrics.horiAdvance // 64,
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pt_to_px(font.glyph.metrics.horiAdvance),
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font.glyph.bitmap_left,
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ascender - font.glyph.bitmap_top,
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width,
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@ -599,11 +582,11 @@ async def to_code(config):
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glyphs = cg.static_const_array(config[CONF_RAW_GLYPH_ID], glyph_initializer)
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font_height = base_font.size.height // 64
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ascender = base_font.size.ascender // 64
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font_height = pt_to_px(base_font.size.height)
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ascender = pt_to_px(base_font.size.ascender)
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if font_height == 0:
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if base_font.has_fixed_sizes:
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font_height = base_font.available_sizes[0].height
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font_height = size
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ascender = font_height
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else:
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_LOGGER.error("Unable to determine height of font %s", config[CONF_FILE])
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