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Added a final fix of xAvgCharWidth

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This commit is contained in:
be5invis 2015-08-31 04:59:41 +08:00
parent deeaccd4cd
commit bc602938a6
2 changed files with 43 additions and 1 deletions
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5
makefile
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@ -15,6 +15,7 @@ FEATURE = $(subst .ttf,.fea,$(subst $(OBJDIR)/,$(OBJDIR)/.pass0-,$(TARGETS)))
PASS1 = $(subst $(OBJDIR)/,$(OBJDIR)/.pass1-,$(TARGETS))
PASS2 = $(subst $(OBJDIR)/,$(OBJDIR)/.pass2-,$(TARGETS))
PASS3 = $(subst $(OBJDIR)/,$(OBJDIR)/.pass3-,$(TARGETS))
PASS4 = $(subst $(OBJDIR)/,$(OBJDIR)/.pass4-,$(TARGETS))
FILES = $(SUPPORT_FILES) buildglyphs.js
@ -51,8 +52,10 @@ $(PASS2) : $(OBJDIR)/.pass2-%.ttf : pass2-smartround.js $(OBJDIR)/.pass1-%.ttf
node $^ $@ --upm $(TARGETUPM)
$(PASS3) : $(OBJDIR)/.pass3-%.ttf : pass3-finalize.py $(OBJDIR)/.pass2-%.ttf
fontforge -quiet -script $^ $@ $(TARGETUPM)
$(TARGETS) : $(OBJDIR)/%.ttf : $(OBJDIR)/.pass3-%.ttf
$(PASS4) : $(OBJDIR)/.pass4-%.ttf : $(OBJDIR)/.pass3-%.ttf
ttfautohint $< $@
$(TARGETS) : $(OBJDIR)/%.ttf : pass4-fixmeta.js $(OBJDIR)/.pass4-%.ttf
node $^ $@
update : $(FILES)

39
pass4-fixmeta.js Normal file
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@ -0,0 +1,39 @@
var fs = require('fs');
var TTFReader = require('node-sfnt').TTFReader;
var TTFWriter = require('node-sfnt').TTFWriter;
function toArrayBuffer(buffer) {
var length = buffer.length;
var view = new DataView(new ArrayBuffer(length), 0, length);
for (var i = 0, l = length; i < l; i++) {
view.setUint8(i, buffer[i], false);
}
return view.buffer;
}
function toBuffer(arrayBuffer) {
var length = arrayBuffer.byteLength;
var view = new DataView(arrayBuffer, 0, length);
var buffer = new Buffer(length);
for (var i = 0, l = length; i < l; i++) {
buffer[i] = view.getUint8(i, false);
}
return buffer;
}
var options = {preserveOS2Version: true, preserveXAvgCharWidth: true, writeUnknownTables: true, hinting: true}
function readttf(file) {
var data = fs.readFileSync(file);
var buffer = toArrayBuffer(data);
var ttf = (new TTFReader(options)).read(buffer);
return ttf;
}
function writettf(ttf, file){
var buffer = new TTFWriter(options).write(ttf);
fs.writeFileSync(file, toBuffer(buffer));
}
var ttf = readttf(process.argv[2]);
// Fixes xAvgCharWidth
if(process.argv[3]) ttf['OS/2'].xAvgCharWidth = ttf.head.unitsPerEm / 2; // 0.5em
fs.writeFileSync(process.argv[3], toBuffer(new TTFWriter(options).write(ttf)));