barcode.java

iText是一个能够快速产生PDF文件的java类库。iText的java类对于那些要产生包含文本

     * @return the text alignment
     */
    public int getTextAlignment() {
        return textAlignment;
    }
    
    /** Sets the text alignment. Can be <CODE>Element.ALIGN_LEFT</CODE>,
     * <CODE>Element.ALIGN_CENTER</CODE> or <CODE>Element.ALIGN_RIGHT</CODE>.
     * @param textAlignment the text alignment
     */
    public void setTextAlignment(int textAlignment) {
        this.textAlignment = textAlignment;
    }
    
    /** Gets the optional checksum generation.
     * @return the optional checksum generation
     */
    public boolean isGenerateChecksum() {
        return generateChecksum;
    }
    
    /** Setter for property generateChecksum.
     * @param generateChecksum New value of property generateChecksum.
     */
    public void setGenerateChecksum(boolean generateChecksum) {
        this.generateChecksum = generateChecksum;
    }
    
    /** Gets the property to show the generated checksum in the the text.
     * @return value of property checksumText
     */
    public boolean isChecksumText() {
        return checksumText;
    }
    
    /** Sets the property to show the generated checksum in the the text.
     * @param checksumText new value of property checksumText
     */
    public void setChecksumText(boolean checksumText) {
        this.checksumText = checksumText;
    }
    
    /** Sets the property to show the start and stop character '*' in the text for
     * the barcode 39.
     * @return value of property startStopText
     */
    public boolean isStartStopText() {
        return startStopText;
    }
    
    /** Gets the property to show the start and stop character '*' in the text for
     * the barcode 39.
     * @param startStopText new value of property startStopText
     */
    public void setStartStopText(boolean startStopText) {
        this.startStopText = startStopText;
    }
    
    /** Gets the property to generate extended barcode 39.
     * @return value of property extended.
     */
    public boolean isExtended() {
        return extended;
    }
    
    /** Sets the property to generate extended barcode 39.
     * @param extended new value of property extended
     */
    public void setExtended(boolean extended) {
        this.extended = extended;
    }
    
    /** Gets the code to generate.
     * @return the code to generate
     */
    public String getCode() {
        return code;
    }
    
    /** Sets the code to generate.
     * @param code the code to generate
     */
    public void setCode(String code) {
        this.code = code;
    }
    
    /** Gets the property to show the guard bars for barcode EAN.
     * @return value of property guardBars
     */
    public boolean isGuardBars() {
        return guardBars;
    }
    
    /** Sets the property to show the guard bars for barcode EAN.
     * @param guardBars new value of property guardBars
     */
    public void setGuardBars(boolean guardBars) {
        this.guardBars = guardBars;
    }
    
    /** Gets the code type.
     * @return the code type
     */
    public int getCodeType() {
        return codeType;
    }
    
    /** Sets the code type.
     * @param codeType the code type
     */
    public void setCodeType(int codeType) {
        this.codeType = codeType;
    }
    
    /** Gets the maximum area that the barcode and the text, if
     * any, will occupy. The lower left corner is always (0, 0).
     * @return the size the barcode occupies.
     */    
    public abstract Rectangle getBarcodeSize();
    
    /** Places the barcode in a <CODE>PdfContentByte</CODE>. The
     * barcode is always placed at coodinates (0, 0). Use the
     * translation matrix to move it elsewhere.<p>
     * The bars and text are written in the following colors:<p>
     * <P><TABLE BORDER=1>
     * <TR>
     *    <TH><P><CODE>barColor</CODE></TH>
     *    <TH><P><CODE>textColor</CODE></TH>
     *    <TH><P>Result</TH>
     *    </TR>
     * <TR>
     *    <TD><P><CODE>null</CODE></TD>
     *    <TD><P><CODE>null</CODE></TD>
     *    <TD><P>bars and text painted with current fill color</TD>
     *    </TR>
     * <TR>
     *    <TD><P><CODE>barColor</CODE></TD>
     *    <TD><P><CODE>null</CODE></TD>
     *    <TD><P>bars and text painted with <CODE>barColor</CODE></TD>
     *    </TR>
     * <TR>
     *    <TD><P><CODE>null</CODE></TD>
     *    <TD><P><CODE>textColor</CODE></TD>
     *    <TD><P>bars painted with current color<br>text painted with <CODE>textColor</CODE></TD>
     *    </TR>
     * <TR>
     *    <TD><P><CODE>barColor</CODE></TD>
     *    <TD><P><CODE>textColor</CODE></TD>
     *    <TD><P>bars painted with <CODE>barColor</CODE><br>text painted with <CODE>textColor</CODE></TD>
     *    </TR>
     * </TABLE>
     * @param cb the <CODE>PdfContentByte</CODE> where the barcode will be placed
     * @param barColor the color of the bars. It can be <CODE>null</CODE>
     * @param textColor the color of the text. It can be <CODE>null</CODE>
     * @return the dimensions the barcode occupies
     */    
    public abstract Rectangle placeBarcode(PdfContentByte cb, Color barColor, Color textColor);
    
    /** Creates a template with the barcode.
     * @param cb the <CODE>PdfContentByte</CODE> to create the template. It
     * serves no other use
     * @param barColor the color of the bars. It can be <CODE>null</CODE>
     * @param textColor the color of the text. It can be <CODE>null</CODE>
     * @return the template
     * @see #placeBarcode(PdfContentByte cb, Color barColor, Color textColor)
     */    
    public PdfTemplate createTemplateWithBarcode(PdfContentByte cb, Color barColor, Color textColor) {
        PdfTemplate tp = cb.createTemplate(0, 0);
        Rectangle rect = placeBarcode(tp, barColor, textColor);
        tp.setBoundingBox(rect);
        return tp;
    }
    
    /** Creates an <CODE>Image</CODE> with the barcode.
     * @param cb the <CODE>PdfContentByte</CODE> to create the <CODE>Image</CODE>. It
     * serves no other use
     * @param barColor the color of the bars. It can be <CODE>null</CODE>
     * @param textColor the color of the text. It can be <CODE>null</CODE>
     * @return the <CODE>Image</CODE>
     * @see #placeBarcode(PdfContentByte cb, Color barColor, Color textColor)
     */    
    public Image createImageWithBarcode(PdfContentByte cb, Color barColor, Color textColor) {
        try {
            return Image.getInstance(createTemplateWithBarcode(cb, barColor, textColor));
        }
        catch (Exception e) {
            throw new ExceptionConverter(e);
        }
    }
    
    /** Creates a <CODE>java.awt.Image</CODE>. This image only
     * contains the bars without any text.
     * @param foreground the color of the bars
     * @param background the color of the background
     * @return the image
     */    
    public abstract java.awt.Image createAwtImage(Color foreground, Color background);
    
    /** Gets the amount of ink spreading.
     * @return the ink spreading
     *
     */
    public float getInkSpreading() {
        return this.inkSpreading;
    }
    
    /** Sets the amount of ink spreading. This value will be subtracted
     * to the width of each bar. The actual value will depend on the ink
     * and the printing medium.
     * @param inkSpreading the ink spreading
     *
     */
    public void setInkSpreading(float inkSpreading) {
    	this.inkSpreading = inkSpreading;
    }

    /**
     * The alternate text to be used, if present.
     */
    protected String altText;

    /**
     * Gets the alternate text.
     * @return the alternate text
     */
    public String getAltText() {
        return this.altText;
    }

    /**
     * Sets the alternate text. If present, this text will be used instead of the
     * text derived from the supplied code.
     * @param altText the alternate text
     */
    public void setAltText(String altText) {
        this.altText = altText;
    }
    
}