@Override
public BitMatrix encode(
String contents, BarcodeFormat format, int width, int height, Map<EncodeHintType, ?> hints) {
if (contents.isEmpty()) {
throw new IllegalArgumentException("Found empty contents");
}
if (format != BarcodeFormat.DATA_MATRIX) {
throw new IllegalArgumentException("Can only encode DATA_MATRIX, but got " + format);
}
if (width < 0 || height < 0) {
throw new IllegalArgumentException(
"Requested dimensions are too small: " + width + 'x' + height);
}
// Try to get force shape & min / max size
SymbolShapeHint shape = SymbolShapeHint.FORCE_NONE;
Dimension minSize = null;
Dimension maxSize = null;
if (hints != null) {
SymbolShapeHint requestedShape =
(SymbolShapeHint) hints.get(EncodeHintType.DATA_MATRIX_SHAPE);
if (requestedShape != null) {
shape = requestedShape;
}
@SuppressWarnings("deprecation")
Dimension requestedMinSize = (Dimension) hints.get(EncodeHintType.MIN_SIZE);
if (requestedMinSize != null) {
minSize = requestedMinSize;
}
@SuppressWarnings("deprecation")
Dimension requestedMaxSize = (Dimension) hints.get(EncodeHintType.MAX_SIZE);
if (requestedMaxSize != null) {
maxSize = requestedMaxSize;
}
}
// 1. step: Data encodation
String encoded = HighLevelEncoder.encodeHighLevel(contents, shape, minSize, maxSize);
SymbolInfo symbolInfo = SymbolInfo.lookup(encoded.length(), shape, minSize, maxSize, true);
// 2. step: ECC generation
String codewords = ErrorCorrection.encodeECC200(encoded, symbolInfo);
// 3. step: Module placement in Matrix
DefaultPlacement placement =
new DefaultPlacement(
codewords, symbolInfo.getSymbolDataWidth(), symbolInfo.getSymbolDataHeight());
placement.place();
// 4. step: low-level encoding
return encodeLowLevel(placement, symbolInfo);
}
