def changeCPALColor(self, table: C_P_A_L_) -> None:
"""
Changes CPAL table in given font, this table contains palettes of colors.
Currently, it works only with fonts that have only one color in their palette.
"""
colors = self.rgbColors
for i, color in enumerate(colors):
if len(color) == 3:
colors[i] += (255, )
table.palettes = [
list(map(lambda x: Color(*x[:3][::-1], x[3]), colors))
]
def buildCPAL(
palettes: Sequence[Sequence[Tuple[float, float, float, float]]],
paletteTypes: Optional[Sequence[ColorPaletteType]] = None,
paletteLabels: Optional[Sequence[_OptionalLocalizedString]] = None,
paletteEntryLabels: Optional[Sequence[_OptionalLocalizedString]] = None,
nameTable: Optional[_n_a_m_e.table__n_a_m_e] = None,
) -> C_P_A_L_.table_C_P_A_L_:
"""Build CPAL table from list of color palettes.
Args:
palettes: list of lists of colors encoded as tuples of (R, G, B, A) floats
in the range [0..1].
paletteTypes: optional list of ColorPaletteType, one for each palette.
paletteLabels: optional list of palette labels. Each lable can be either:
None (no label), a string (for for default English labels), or a
localized string (as a dict keyed with BCP47 language codes).
paletteEntryLabels: optional list of palette entry labels, one for each
palette entry (see paletteLabels).
nameTable: optional name table where to store palette and palette entry
labels. Required if either paletteLabels or paletteEntryLabels is set.
Return:
A new CPAL v0 or v1 table, if custom palette types or labels are specified.
"""
if len({len(p) for p in palettes}) != 1:
raise ColorLibError("color palettes have different lengths")
if (paletteLabels or paletteEntryLabels) and not nameTable:
raise TypeError(
"nameTable is required if palette or palette entries have labels")
cpal = C_P_A_L_.table_C_P_A_L_()
cpal.numPaletteEntries = len(palettes[0])
cpal.palettes = []
for i, palette in enumerate(palettes):
colors = []
for j, color in enumerate(palette):
if not isinstance(color, tuple) or len(color) != 4:
raise ColorLibError(
f"In palette[{i}][{j}]: expected (R, G, B, A) tuple, got {color!r}"
)
if any(v > 1 or v < 0 for v in color):
raise ColorLibError(
f"palette[{i}][{j}] has invalid out-of-range [0..1] color: {color!r}"
)
# input colors are RGBA, CPAL encodes them as BGRA
red, green, blue, alpha = color
colors.append(
C_P_A_L_.Color(*(round(v * 255)
for v in (blue, green, red, alpha))))
cpal.palettes.append(colors)
if any(v is not None
for v in (paletteTypes, paletteLabels, paletteEntryLabels)):
cpal.version = 1
if paletteTypes is not None:
if len(paletteTypes) != len(palettes):
raise ColorLibError(
f"Expected {len(palettes)} paletteTypes, got {len(paletteTypes)}"
)
cpal.paletteTypes = [
ColorPaletteType(t).value for t in paletteTypes
]
else:
cpal.paletteTypes = [C_P_A_L_.table_C_P_A_L_.DEFAULT_PALETTE_TYPE
] * len(palettes)
if paletteLabels is not None:
if len(paletteLabels) != len(palettes):
raise ColorLibError(
f"Expected {len(palettes)} paletteLabels, got {len(paletteLabels)}"
)
cpal.paletteLabels = buildPaletteLabels(paletteLabels, nameTable)
else:
cpal.paletteLabels = [C_P_A_L_.table_C_P_A_L_.NO_NAME_ID
] * len(palettes)
if paletteEntryLabels is not None:
if len(paletteEntryLabels) != cpal.numPaletteEntries:
raise ColorLibError(
f"Expected {cpal.numPaletteEntries} paletteEntryLabels, "
f"got {len(paletteEntryLabels)}")
cpal.paletteEntryLabels = buildPaletteLabels(
paletteEntryLabels, nameTable)
else:
cpal.paletteEntryLabels = [C_P_A_L_.table_C_P_A_L_.NO_NAME_ID
] * cpal.numPaletteEntries
else:
cpal.version = 0
return cpal