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Viewing changes to Lib/fontTools/ttLib/tables/_g_a_s_p.py

  • Committer: Bazaar Package Importer
  • Author(s): Anthony Fok
  • Date: 2003-11-18 00:53:59 UTC
  • Revision ID: james.westby@ubuntu.com-20031118005359-pqirsxbgdz0f0xmx
Tags: upstream-1.99+2.0b1+cvs20031014
Import upstream version 1.99+2.0b1+cvs20031014

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Lib/fontTools/ttLib/tables/_g_a_s_p.py
 
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import DefaultTable
 
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import struct
 
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from fontTools.misc.textTools import safeEval
 
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GASP_DOGRAY = 0x0002
 
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GASP_GRIDFIT = 0x0001
 
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class table__g_a_s_p(DefaultTable.DefaultTable):
 
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        def decompile(self, data, ttFont):
 
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                self.version, numRanges = struct.unpack(">HH", data[:4])
 
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                assert self.version == 0, "unknown 'gasp' format: %s" % self.version
 
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                data = data[4:]
 
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                self.gaspRange = {}
 
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                for i in range(numRanges):
 
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                        rangeMaxPPEM, rangeGaspBehavior = struct.unpack(">HH", data[:4])
 
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                        self.gaspRange[int(rangeMaxPPEM)] = int(rangeGaspBehavior)
 
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                        data = data[4:]
 
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                assert not data, "too much data"
 
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        def compile(self, ttFont):
 
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                numRanges = len(self.gaspRange)
 
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                data = struct.pack(">HH", 0, numRanges)
 
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                items = self.gaspRange.items()
 
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                items.sort()
 
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                for rangeMaxPPEM, rangeGaspBehavior in items:
 
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                        data = data + struct.pack(">HH", rangeMaxPPEM, rangeGaspBehavior)
 
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                return data
 
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        def toXML(self, writer, ttFont):
 
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                items = self.gaspRange.items()
 
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                items.sort()
 
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                for rangeMaxPPEM, rangeGaspBehavior in items:
 
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                        writer.simpletag("gaspRange", [
 
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                                        ("rangeMaxPPEM", rangeMaxPPEM),
 
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                                        ("rangeGaspBehavior", rangeGaspBehavior)])
 
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                        writer.newline()
 
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        def fromXML(self, (name, attrs, content), ttFont):
 
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                if name <> "gaspRange":
 
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                        return
 
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                if not hasattr(self, "gaspRange"):
 
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                        self.gaspRange = {}
 
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                self.gaspRange[safeEval(attrs["rangeMaxPPEM"])] = safeEval(attrs["rangeGaspBehavior"])
 
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