Added TTF convert script

src/convert.py

@@ -0,0 +1,89 @@
+from fontTools.ttLib import TTFont, newTable
+from fontTools.pens.ttGlyphPen import TTGlyphPen
+from fontTools.misc.cliTools import makeOutputFileName
+from fontTools import configLogger
+from cu2qu.pens import Cu2QuPen
+import sys
+import os
+import logging
+import argparse
+from glob import glob
+
+LILEX_OTF_GLOB = 'build/otf/*.otf'
+OUTPUT_DIR = 'build/ttf-not_hinted/'
+
+
+log = logging.getLogger()
+
+MAX_ERR = 1.0
+
+POST_FORMAT = 2.0
+
+REVERSE_DIRECTION = True
+
+
+def glyphs_to_quadratic(
+        glyphs, max_err=MAX_ERR, reverse_direction=REVERSE_DIRECTION):
+    quadGlyphs = {}
+    for gname in glyphs.keys():
+        glyph = glyphs[gname]
+        ttPen = TTGlyphPen(glyphs)
+        cu2quPen = Cu2QuPen(ttPen, max_err,
+                            reverse_direction=reverse_direction)
+        glyph.draw(cu2quPen)
+        quadGlyphs[gname] = ttPen.glyph()
+    return quadGlyphs
+
+
+def otf_to_ttf(ttFont, post_format=POST_FORMAT, **kwargs):
+    assert ttFont.sfntVersion == "OTTO"
+    assert "CFF " in ttFont
+
+    glyphOrder = ttFont.getGlyphOrder()
+
+    ttFont["loca"] = newTable("loca")
+    ttFont["glyf"] = glyf = newTable("glyf")
+    glyf.glyphOrder = glyphOrder
+    glyf.glyphs = glyphs_to_quadratic(ttFont.getGlyphSet(), **kwargs)
+    del ttFont["CFF "]
+    glyf.compile(ttFont)
+
+    ttFont["maxp"] = maxp = newTable("maxp")
+    maxp.tableVersion = 0x00010000
+    maxp.maxZones = 1
+    maxp.maxTwilightPoints = 0
+    maxp.maxStorage = 0
+    maxp.maxFunctionDefs = 0
+    maxp.maxInstructionDefs = 0
+    maxp.maxStackElements = 0
+    maxp.maxSizeOfInstructions = 0
+    maxp.maxComponentElements = max(
+        len(g.components if hasattr(g, 'components') else [])
+        for g in glyf.glyphs.values())
+    maxp.compile(ttFont)
+
+    post = ttFont["post"]
+    post.formatType = post_format
+    post.extraNames = []
+    post.mapping = {}
+    post.glyphOrder = glyphOrder
+    try:
+        post.compile(ttFont)
+    except OverflowError:
+        post.formatType = 3
+        log.warning("Dropping glyph names, they do not fit in 'post' table.")
+
+    ttFont.sfntVersion = "\000\001\000\000"
+
+
+files = glob(LILEX_OTF_GLOB)
+for input_file in files:
+    output = makeOutputFileName(input_file, outputDir=OUTPUT_DIR,
+                                    extension='.ttf',
+                                    overWrite=True)    
+    font = TTFont(input_file, fontNumber=0)
+    otf_to_ttf(font,
+               post_format=POST_FORMAT,
+               max_err=MAX_ERR,
+               reverse_direction=True)
+    font.save(output)