Source code for psd_tools.psd.color_mode_data

Color mode data structure.
from __future__ import absolute_import, unicode_literals

import logging

import attr

from psd_tools.psd.base import ValueElement
from psd_tools.utils import read_length_block, write_bytes, write_length_block

logger = logging.getLogger(__name__)

[docs] @attr.s(repr=False, slots=True) class ColorModeData(ValueElement): """ Color mode data section of the PSD file. For indexed color images the data is the color table for the image in a non-interleaved order. Duotone images also have this data, but the data format is undocumented. """ value = attr.ib(default=b"", type=bytes) @classmethod def read(cls, fp): value = read_length_block(fp) logger.debug("reading color mode data, len=%d" % (len(value))) # TODO: Parse color table. return cls(value) def write(self, fp): def writer(f): return write_bytes(f, self.value) logger.debug("writing color mode data, len=%d" % (len(self.value))) return write_length_block(fp, writer)
[docs] def interleave(self): """ Returns interleaved color table in bytes. """ import array if bytes == str: return b"".join( array.array( "B", [ ord(self.value[i]), ord(self.value[i + 256]), ord(self.value[i + 512]), ], ).tostring() for i in range(256) ) else: return b"".join( array.array( "B", [(self.value[i]), (self.value[i + 256]), (self.value[i + 512])] ).tobytes() for i in range(256) )