/**
* Fix a broken font name table for a TrueType font. Some fonts do not have Microsoft-specific
* name information, but Java won't work without it (grrr.). This method takes a font and adds the
* Microsoft data into it.
*
* @param ttf the font
* @param name the font's name table
* @return true if the table was fixed, or false if it was left as is
*/
private boolean fixNameTable(TrueTypeFont ttf, NameTable name) {
// if we didn't find the table, or there was an exception,
// just create a new one
if (name == null) {
name = (NameTable) TrueTypeTable.createTable(ttf, "name");
ttf.addTable("name", name);
}
// first, figure out some info about the font
String fName = this.getBaseFont();
String style = "Regular";
if (fName.indexOf("Italic") > -1 || fName.indexOf("italic") > -1) {
style = "Italic";
} else if (fName.indexOf("Bold") > -1 || fName.indexOf("bold") > -1) {
style = "Bold";
}
if (fName.indexOf('-') > -1) {
fName = fName.substring(0, fName.indexOf('-'));
}
short platID = NameTable.PLATFORMID_MICROSOFT;
short encID = 1;
short langID = 1033;
short[] nameIDs = {
NameTable.NAMEID_COPYRIGHT,
NameTable.NAMEID_FAMILY,
NameTable.NAMEID_SUBFAMILY,
NameTable.NAMEID_SUBFAMILY_UNIQUE,
NameTable.NAMEID_FULL_NAME,
NameTable.NAMEID_VERSION,
NameTable.NAMEID_POSTSCRIPT_NAME,
NameTable.NAMEID_TRADEMARK
};
String[] defaultValues = {
"No copyright",
fName,
style,
fName + " " + style,
fName + " " + style,
"1.0 (Fake)",
fName,
"No Trademark"
};
boolean changed = false;
for (int i = 0; i < nameIDs.length; i++) {
if (name.getRecord(platID, encID, langID, nameIDs[i]) == null) {
name.addRecord(platID, encID, langID, nameIDs[i], defaultValues[i]);
changed = true;
}
}
return changed;
}
/**
* Fix the CMap table. This can be necessary if characters are mapped to control characters (0x9,
* 0xa, 0xd) Java will not render them, even though they are valid.
*
* <p>Also, Java tends to not like it when there is only a Format 0 CMap, which happens frequently
* when included Format 4 CMaps are broken. Since PDF prefers the Format 0 map, while Java prefers
* the Format 4 map, it is generally necessary to re-write the Format 0 map as a Format 4 map to
* make most PDFs work.
*
* @param ttf the font
* @param cmap the CMap table
* @return true if the font was changed, or false if it was left as-is
*/
private boolean fixCMapTable(TrueTypeFont ttf, CmapTable cmap) {
CMapFormat4 fourMap = null;
CMapFormat0 zeroMap = null;
for (int i = 0; i < mapIDs.length; i += 2) {
CMap map = this.cmapTable.getCMap(mapIDs[i], mapIDs[i + 1]);
if (map != null) {
if (fourMap == null && map instanceof CMapFormat4) {
fourMap = (CMapFormat4) map;
} else if (zeroMap == null && map instanceof CMapFormat0) {
zeroMap = (CMapFormat0) map;
}
}
}
// if there were no maps, we could have problems. Just try creating
// an identity map
if (zeroMap == null && fourMap == null) {
fourMap = (CMapFormat4) CMap.createMap((short) 4, (short) 0);
fourMap.addSegment((short) getFirstChar(), (short) getLastChar(), (short) 0);
}
// create our map based on the type 0 map, since PDF seems
// to prefer a type 0 map (Java prefers a unicode map)
if (zeroMap != null) {
fourMap = (CMapFormat4) CMap.createMap((short) 4, (short) 0);
// add the mappings from 0 to null and 1 to notdef
fourMap.addSegment((short) 0, (short) 1, (short) 0);
for (int i = getFirstChar(); i <= getLastChar(); i++) {
short value = (short) (zeroMap.map((byte) i) & 0xff);
if (value != 0) {
fourMap.addSegment((short) i, (short) i, (short) (value - i));
}
}
}
// now that we have a type four map, remap control characters
for (int i = 0; i < controlChars.length; i++) {
short idx = (short) (0xf000 | controlChars[i]);
short value = (short) fourMap.map(controlChars[i]);
fourMap.addSegment(idx, idx, (short) (value - idx));
}
// create a whole new table with just our map
cmap = (CmapTable) TrueTypeTable.createTable(ttf, "cmap");
cmap.addCMap((short) 3, (short) 1, fourMap);
// replace the table in the font
ttf.addTable("cmap", cmap);
// change the stored table
this.cmapTable = cmap;
return true;
}
/**
* Set the font
*
* @param f the font to use
*/
protected void setFont(Font f) {
this.f = f;
// if it's an OpenType font, parse the relevant tables to get
// glyph name to code mappings
if (f instanceof OpenType) {
OpenType ot = (OpenType) f;
byte[] cmapData = ot.getFontTable(OpenType.TAG_CMAP);
byte[] postData = ot.getFontTable(OpenType.TAG_POST);
TrueTypeFont ttf = new TrueTypeFont(0x10000);
this.cmapTable =
(CmapTable) TrueTypeTable.createTable(ttf, "cmap", ByteBuffer.wrap(cmapData));
ttf.addTable("cmap", this.cmapTable);
this.postTable =
(PostTable) TrueTypeTable.createTable(ttf, "post", ByteBuffer.wrap(postData));
ttf.addTable("post", this.postTable);
}
}
