/**
* Is the font ready to build?
*
* @return true if ready to build; false otherwise
*/
public boolean readyToBuild() {
// just read in data with no manipulation
if (this.tableBuilders == null && this.dataBlocks != null && this.dataBlocks.size() > 0) {
return true;
}
for (Table.Builder<? extends Table> tableBuilder : this.tableBuilders.values()) {
if (tableBuilder.readyToBuild() == false) {
return false;
}
}
return true;
}
private static Map<Integer, Table> buildTablesFromBuilders(
Font font, Map<Integer, Table.Builder<? extends Table>> builderMap) {
Map<Integer, Table> tableMap = new TreeMap<Integer, Table>();
interRelateBuilders(builderMap);
long fontChecksum = 0;
boolean tablesChanged = false;
FontHeaderTable.Builder headerTableBuilder = null;
// now build all the tables
for (Table.Builder<? extends Table> builder : builderMap.values()) {
Table table = null;
if (Tag.isHeaderTable(builder.header().tag())) {
headerTableBuilder = (FontHeaderTable.Builder) builder;
continue;
}
if (builder.readyToBuild()) {
tablesChanged |= builder.changed();
table = builder.build();
}
if (table == null) {
throw new RuntimeException("Unable to build table - " + builder);
}
long tableChecksum = table.calculatedChecksum();
fontChecksum += tableChecksum;
tableMap.put(table.header().tag(), table);
}
// now fix up the header table
Table headerTable = null;
if (headerTableBuilder != null) {
if (tablesChanged) {
headerTableBuilder.setFontChecksum(fontChecksum);
}
if (headerTableBuilder.readyToBuild()) {
tablesChanged |= headerTableBuilder.changed();
headerTable = headerTableBuilder.build();
}
if (headerTable == null) {
throw new RuntimeException("Unable to build table - " + headerTableBuilder);
}
fontChecksum += headerTable.calculatedChecksum();
tableMap.put(headerTable.header().tag(), headerTable);
}
font.checksum = fontChecksum & 0xffffffffL;
return tableMap;
}
/**
* Creates a new empty table builder for the table type given by the table id tag.
*
* <p>This new table will be added to the font and will replace any existing builder for that
* table.
*
* @param tag
* @return new empty table of the type specified by tag; if tag is not known then a generic
* OpenTypeTable is returned
*/
public Table.Builder<? extends Table> newTableBuilder(int tag) {
Header header = new Header(tag);
Table.Builder<? extends Table> builder = Table.Builder.getBuilder(header, null);
this.tableBuilders.put(header.tag(), builder);
return builder;
}
/**
* Creates a new table builder for the table type given by the table id tag. It makes a copy of
* the data provided and uses that copy for the table.
*
* <p>This new table has been added to the font and will replace any existing builder for that
* table.
*
* @param tag
* @param srcData
* @return new empty table of the type specified by tag; if tag is not known then a generic
* OpenTypeTable is returned
*/
public Table.Builder<? extends Table> newTableBuilder(int tag, ReadableFontData srcData) {
WritableFontData data;
data = WritableFontData.createWritableFontData(srcData.length());
// TODO(stuartg): take over original data instead?
srcData.copyTo(data);
Header header = new Header(tag, data.length());
Table.Builder<? extends Table> builder = Table.Builder.getBuilder(header, data);
this.tableBuilders.put(tag, builder);
return builder;
}
private Table.Builder<? extends Table> getTableBuilder(Header header, WritableFontData data) {
Table.Builder<? extends Table> builder = Table.Builder.getBuilder(header, data);
return builder;
}
