public void initCode39Bean() {
code39Bean = new Code39Bean();
final int dpi = barcodeDpi;
// Configure the barcode generator
code39Bean.setModuleWidth(UnitConv.in2mm(1.0f / dpi)); // makes the
// narrow bar
// width exactly one pixel
code39Bean.setBarHeight(barHeight);
code39Bean.setWideFactor(wideFactor);
code39Bean.doQuietZone(false);
}
/**
* This class is an implementation of DataMatrix (ISO 16022:2000(E)).
*
* @version $Id: DataMatrixBean.java,v 1.7 2008/09/22 08:59:07 jmaerki Exp $
*/
public class DataMatrixBean extends AbstractBarcodeBean {
/** The default module width (dot size) for DataMatrix. */
protected static final double DEFAULT_MODULE_WIDTH = UnitConv.in2mm(1.0 / 72); // 1px at 72dpi
/**
* The requested shape. May be <code>FORCE_NONE</code>, <code>FORCE_SQUARE</code> or <code>
* FORCE_RECTANGLE</code>.
*/
private SymbolShapeHint shape;
/** Optional: the minimum size of the symbol. */
private Dimension minSize;
/** Optional: the maximum size of the symbol. */
private Dimension maxSize;
/** Create a new instance. */
public DataMatrixBean() {
this.height = 0.0; // not used by DataMatrix
this.moduleWidth = DEFAULT_MODULE_WIDTH;
setQuietZone(1 * moduleWidth);
this.shape = SymbolShapeHint.FORCE_NONE;
}
/**
* Sets the requested shape for the generated barcodes.
*
* @param shape requested shape. May be <code>SymbolShapeHint.FORCE_NONE</code>, <code>
* SymbolShapeHint.FORCE_SQUARE</code> or <code>SymbolShapeHint.FORCE_RECTANGLE</code>.
*/
public void setShape(SymbolShapeHint shape) {
this.shape = shape;
}
/**
* Gets the requested shape for the generated barcodes.
*
* @return the requested shape (one of SymbolShapeHint.*).
*/
public SymbolShapeHint getShape() {
return shape;
}
/**
* Sets the minimum symbol size that is to be produced.
*
* @param minSize the minimum size (in pixels), or null for no constraint
*/
public void setMinSize(Dimension minSize) {
this.minSize = new Dimension(minSize);
}
/**
* Returns the minimum symbol size that is to be produced. If the method returns null, there's no
* constraint on the symbol size.
*
* @return the minimum symbol size (in pixels), or null if there's no size constraint
*/
public Dimension getMinSize() {
if (this.minSize != null) {
return new Dimension(this.minSize);
} else {
return null;
}
}
/**
* Sets the maximum symbol size that is to be produced.
*
* @param maxSize the maximum size (in pixels), or null for no constraint
*/
public void setMaxSize(Dimension maxSize) {
this.maxSize = new Dimension(maxSize);
}
/**
* Returns the maximum symbol size that is to be produced. If the method returns null, there's no
* constraint on the symbol size.
*
* @return the maximum symbol size (in pixels), or null if there's no size constraint
*/
public Dimension getMaxSize() {
if (this.maxSize != null) {
return new Dimension(this.maxSize);
} else {
return null;
}
}
/** {@inheritDoc} */
public void generateBarcode(CanvasProvider canvas, String msg) {
if ((msg == null) || (msg.length() == 0)) {
throw new NullPointerException("Parameter msg must not be empty");
}
TwoDimBarcodeLogicHandler handler =
new DefaultTwoDimCanvasLogicHandler(this, new Canvas(canvas));
DataMatrixLogicImpl impl = new DataMatrixLogicImpl();
impl.generateBarcodeLogic(handler, msg, getShape(), getMinSize(), getMaxSize());
}
/** {@inheritDoc} */
public BarcodeDimension calcDimensions(String msg) {
String encoded;
try {
encoded = DataMatrixHighLevelEncoder.encodeHighLevel(msg, shape, getMinSize(), getMaxSize());
} catch (IOException e) {
throw new IllegalArgumentException("Cannot fetch data: " + e.getLocalizedMessage());
}
DataMatrixSymbolInfo symbolInfo = DataMatrixSymbolInfo.lookup(encoded.length(), shape);
double width = symbolInfo.getSymbolWidth() * getModuleWidth();
double height = symbolInfo.getSymbolHeight() * getBarHeight();
double qzh = (hasQuietZone() ? getQuietZone() : 0);
double qzv = (hasQuietZone() ? getVerticalQuietZone() : 0);
return new BarcodeDimension(width, height, width + (2 * qzh), height + (2 * qzv), qzh, qzv);
}
/** {@inheritDoc} */
public double getVerticalQuietZone() {
return getQuietZone();
}
/** {@inheritDoc} */
public double getBarWidth(int width) {
return moduleWidth;
}
/** {@inheritDoc} */
public double getBarHeight() {
return moduleWidth;
}
}
