f
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treeform
parent
3fa9d34544
commit
d8f6e870a3
1 changed files with 56 additions and 85 deletions
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@ -349,10 +349,10 @@ type
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nominalWidthX: int
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ros: array[3, string]
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strokeWidth: int
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uidBase: pointer
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uidBase: int
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underlinePosition: int
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underlineThickness: int
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uniqueId: pointer
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uniqueId: int
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version: string
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weight: string
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@ -365,9 +365,6 @@ type
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globalSubrIndex: seq[string]
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topDict: CFFTopDict
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charIndex: seq[string]
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#charsets*: CFF..
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#charStringsIndex*: CFF..
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#privateDict*: CFF..
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isCID: bool
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OpenType* = ref object
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@ -1461,10 +1458,10 @@ proc parseCFFTable(buf: string, offset: int, maxp: MaxpTable): CFFTable =
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cffTopDict.ros = topDict.getArrStr("ros", ["", "", ""], strings)
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cffTopDict.strokeWidth = topDict.getInt("strokeWidth", 0)
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# cffTopDict.uidBase: pointer
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cffTopDict.uidBase = topDict.getInt("uidBase", 0)
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cffTopDict.underlinePosition = topDict.getInt("underlinePosition", -100)
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cffTopDict.underlineThickness = topDict.getInt("underlineThickness", 50)
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# cffTopDict.uniqueId: pointer
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cffTopDict.uniqueId = topDict.getInt("uniqueId", 0)
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cffTopDict.version = topDict.getStr("version", "")
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cffTopDict.weight = topDict.getStr("weight", "")
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result.add(cffTopDict)
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@ -1477,16 +1474,6 @@ proc parseCFFTable(buf: string, offset: int, maxp: MaxpTable): CFFTable =
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failUnsupported("CFF multiple topDict")
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result.topDict = topDicts[0]
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# Subroutines are encoded using the negative half of the number space.
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# See type 2 chapter 4.7 "Subroutine operators".
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result.topDict.subrsBias =
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if result.globalSubrIndex.len < 1240:
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107
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elif result.globalSubrIndex.len < 33900:
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1131
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else:
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32768
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if result.topDict.ros[0] != "" and result.topDict.ros[1] != "":
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result.isCID = true
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@ -1504,15 +1491,6 @@ proc parseCFFTable(buf: string, offset: int, maxp: MaxpTable): CFFTable =
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var format = buf.readUint8(at)
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inc at
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# if (format === 0) {
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# // Simple list of nGlyphs elements
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# for (var iGid = 0; iGid < nGlyphs; iGid++) {
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# fdIndex = parser.parseCard8();
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# if (fdIndex >= fdArrayCount) {
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# throw new Error('CFF table CID Font FDSelect has bad FD index value ' + fdIndex + ' (FD count ' + fdArrayCount + ')');
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# }
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# fdSelect.push(fdIndex);
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# }
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if format == 3:
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# Ranges
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var nRanges = buf.readUint16(at).swap().int
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@ -1536,7 +1514,6 @@ proc parseCFFTable(buf: string, offset: int, maxp: MaxpTable): CFFTable =
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while first < next:
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result.add(fdIndex)
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inc first
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first = next
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if next != nGlyphs:
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@ -1545,7 +1522,8 @@ proc parseCFFTable(buf: string, offset: int, maxp: MaxpTable): CFFTable =
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else:
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failUnsupported("CFF Table CID Font FDSelect format")
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result.topDict.fdSelectSeq = parseCFFFDSelect(buf, fdSelectOffset, maxp.numGlyphs.int, result.topDict.fdArraySeq.len)
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result.topDict.fdSelectSeq = parseCFFFDSelect(
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buf, fdSelectOffset, maxp.numGlyphs.int, result.topDict.fdArraySeq.len)
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if result.topDict.subrs != 0:
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var subrOffset =
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@ -1553,70 +1531,63 @@ proc parseCFFTable(buf: string, offset: int, maxp: MaxpTable): CFFTable =
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result.topDict.subrIndex = buf.parseCFFIndex(subrOffset)
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result.topDict.subrsBias = calcCFFSubroutineBias(result.topDict.subrIndex)
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proc parseCFFIndexLowMemory(buf: string, offset: int): seq[int] =
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proc getOffset(dataView: string, offset, offSize: int): int =
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var v = 0
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for i in 0 ..< offSize:
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v = v shl 8
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v += dataView.readUint8(offset + i).int
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return v
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let count = buf.readUint16(offset).swap().int
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var objectOffset = 0
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if count != 0:
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var offsetSize = buf.readUint8(offset + 2).int
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objectOffset = offset + ((count + 1) * offsetSize) + 2
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var pos = offset + 3
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for i in 0 .. count:
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let offsetValue = buf.getOffset(pos, offsetSize)
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result.add offsetValue
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pos += offsetSize
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# proc parseCFFIndexLowMemory(buf: string, offset: int): seq[int] =
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# proc getOffset(dataView: string, offset, offSize: int): int =
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# var v = 0
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# for i in 0 ..< offSize:
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# v = v shl 8
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# v += dataView.readUint8(offset + i).int
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# return v
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# let count = buf.readUint16(offset).swap().int
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# var objectOffset = 0
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# if count != 0:
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# var offsetSize = buf.readUint8(offset + 2).int
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# objectOffset = offset + ((count + 1) * offsetSize) + 2
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# var pos = offset + 3
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# for i in 0 .. count:
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# let offsetValue = buf.getOffset(pos, offsetSize)
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# result.add offsetValue
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# pos += offsetSize
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let charStringsIndex = parseCFFIndexLowMemory(
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buf, offset + result.topDict.charStrings)
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let nGlyphs = charStringsIndex.len
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# let charStringsIndex = parseCFFIndexLowMemory(
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# buf, offset + result.topDict.charStrings)
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# proc parseCFFCharset(
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# buf: string,
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# offset: int,
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# nGlyphs: int,
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# stringIndex: seq[string]
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# ): seq[string] =
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# # The .notdef glyph is implied
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# var charset = @[".notdef"]
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# var nGlyphs = nGlyphs - 1
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# var pos = offset
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# var format = buf.readUint8(pos)
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# inc pos
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# if format == 2:
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# while charset.len <= nGlyphs:
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# var
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# sid = buf.readUint16(pos).swap().int
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# pos += 2
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# var
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# count = buf.readUint16(pos).swap().int
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# pos += 2
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# for i in 0 .. count:
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# charset.add(getCFFString(stringIndex, sid))
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# if charset.len >= nGlyphs:
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# break
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# sid += 1
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# else:
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# failUnsupported("CFF charset format: " & $format)
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proc parseCFFCharset(
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buf: string,
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offset: int,
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nGlyphs: int,
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stringIndex: seq[string]
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): seq[string] =
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# The .notdef glyph is implied
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var charset = @[".notdef"]
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var nGlyphs = nGlyphs - 1
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var pos = offset
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var format = buf.readUint8(pos)
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inc pos
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if format == 2:
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while charset.len <= nGlyphs:
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var
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sid = buf.readUint16(pos).swap().int
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pos += 2
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var
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count = buf.readUint16(pos).swap().int
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pos += 2
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for i in 0 .. count:
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charset.add(getCFFString(stringIndex, sid))
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if charset.len >= nGlyphs:
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break
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sid += 1
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else:
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failUnsupported("CFF charset format: " & $format)
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# # Why do we need this anyways?
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# # let nGlyphs = charStringsIndex.len
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# #var charset = parseCFFCharset(
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# # buf, offset + result.topDict.charset, nGlyphs, result.stringIndex.objects)
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# Why do we need this anyways?
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#var charset = parseCFFCharset(
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# buf, offset + result.topDict.charset, nGlyphs, result.stringIndex.objects)
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var start = offset + result.topDict.charStrings
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result.charIndex = buf.parseCFFIndex(start)
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# let glyphIndex = 2539
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# let charstring = charIndex.objects[glyphIndex]
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# var path = parseCFFCharstring(result, charstring)
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# for glyphIndex in 0 ..< result.charIndex.objects.len:
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# let charstring = result.charIndex.objects[glyphIndex]
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# var path = parseCFFCharstring(result, charstring)
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# proc parseLangSys(buf: string, offset: int): LangSys =
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# var i = offset
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