PcfFontFile.py 文件源码

def _load_encoding(self):

        # map character code to bitmap index
        encoding = [None] * 256

        fp, format, i16, i32 = self._getformat(PCF_BDF_ENCODINGS)

        firstCol, lastCol = i16(fp.read(2)), i16(fp.read(2))
        firstRow, lastRow = i16(fp.read(2)), i16(fp.read(2))

        default = i16(fp.read(2))

        nencoding = (lastCol - firstCol + 1) * (lastRow - firstRow + 1)

        for i in range(nencoding):
            encodingOffset = i16(fp.read(2))
            if encodingOffset != 0xFFFF:
                try:
                    encoding[i+firstCol] = encodingOffset
                except IndexError:
                    break # only load ISO-8859-1 glyphs

        return encoding