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Rename unknown fields to version, flags (again)

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This commit is contained in:
Jens Kutilek 2014-09-22 16:54:43 +02:00
parent 8f9fcd911d
commit d06c71932e
1 changed files with 21 additions and 14 deletions
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35
Lib/fontTools/ttLib/tables/_s_b_i_x.py
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@ -10,16 +10,16 @@ import struct
"""
sbix Table organization:
USHORT version?
USHORT version?
USHORT count number of bitmap sets
UInt16 version
UInt16 flags
UInt32 count number of bitmap sets
offsetEntry offsetEntry[count] offsetEntries
(Variable) storage for bitmap sets
offsetEntry:
ULONG offset offset from table start to bitmap set
UInt32 offset offset from table start to bitmap set
bitmap set:
@ -37,16 +37,23 @@ ULONG bitmapOffset offset from start of bitmap set to indivi
bitmap:
ULONG reserved 00 00 00 00
SInt16 reserved 00 00
SInt16 reserved 00 00
char[4] format data type, e.g. "png "
(Variable) bitmap data
"""
sbixHeaderFormat = """
>
usVal1: H # 00 01
usVal2: H # 00 01
numSets: L # 00 00 00 02 # number of bitmap sets
>
version: H # Version number (set to 1)
flags: H # The only two bits used in the flags field are bits 0
# and 1. For historical reasons, bit 0 must always be 1.
# Bit 1 is a sbixDrawOutlines flag and is interpreted as
# follows:
# 0: Draw only 'sbix' bitmaps
# 1: Draw both 'sbix' bitmaps and outlines, in that
# order
numSets: L # Number of bitmap strikes to follow
"""
sbixHeaderFormatSize = sstruct.calcsize(sbixHeaderFormat)
@ -61,8 +68,8 @@ sbixBitmapSetOffsetFormatSize = sstruct.calcsize(sbixBitmapSetOffsetFormat)
class table__s_b_i_x(DefaultTable.DefaultTable):
def __init__(self, tag):
self.tableTag = tag
self.usVal1 = 1
self.usVal2 = 1
self.version = 1
self.flags = 1
self.numSets = 0
self.bitmapSets = {}
self.bitmapSetOffsets = []
@ -114,15 +121,15 @@ class table__s_b_i_x(DefaultTable.DefaultTable):
return sbixHeader + sbixData
def toXML(self, xmlWriter, ttFont):
xmlWriter.simpletag("usVal1", value=self.usVal1)
xmlWriter.simpletag("version", value=self.version)
xmlWriter.newline()
xmlWriter.simpletag("usVal2", value=self.usVal2)
xmlWriter.simpletag("flags", value=self.flags)
xmlWriter.newline()
for i in sorted(self.bitmapSets.keys()):
self.bitmapSets[i].toXML(xmlWriter, ttFont)
def fromXML(self, name, attrs, content, ttFont):
if name in ["usVal1", "usVal2"]:
if name in ["version", "flags"]:
setattr(self, name, int(attrs["value"]))
elif name == "bitmapSet":
myBitmapSet = BitmapSet()