acrofields.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

                            PdfAppearance cb = new PdfAppearance();
                            if (dao[DA_FONT] != null) {
                                BaseFont bf = (BaseFont)value;
                                PdfName psn = (PdfName)PdfAppearance.stdFieldFontNames.get(bf.getPostscriptFontName());
                                if (psn == null) {
                                    psn = new PdfName(bf.getPostscriptFontName());
                                }
                                PdfDictionary fonts = (PdfDictionary)PdfReader.getPdfObject(dr.get(PdfName.FONT));
                                if (fonts == null) {
                                    fonts = new PdfDictionary();
                                    dr.put(PdfName.FONT, fonts);
                                }
                                PdfIndirectReference fref = (PdfIndirectReference)fonts.get(psn);
                                PdfDictionary top = (PdfDictionary)PdfReader.getPdfObject(reader.getCatalog().get(PdfName.ACROFORM));
                                markUsed(top);
                                dr = (PdfDictionary)PdfReader.getPdfObject(top.get(PdfName.DR));
                                if (dr == null) {
                                    dr = new PdfDictionary();
                                    top.put(PdfName.DR, dr);
                                }
                                markUsed(dr);
                                PdfDictionary fontsTop = (PdfDictionary)PdfReader.getPdfObject(dr.get(PdfName.FONT));
                                if (fontsTop == null) {
                                    fontsTop = new PdfDictionary();
                                    dr.put(PdfName.FONT, fontsTop);
                                }
                                markUsed(fontsTop);
                                PdfIndirectReference frefTop = (PdfIndirectReference)fontsTop.get(psn);
                                if (frefTop != null) {
                                    if (fref == null)
                                        fonts.put(psn, frefTop);
                                }
                                else if (fref == null) {
                                    FontDetails fd;
                                    if (bf.getFontType() == BaseFont.FONT_TYPE_DOCUMENT) {
                                        fd = new FontDetails(null, ((DocumentFont)bf).getIndirectReference(), bf);
                                    }
                                    else {
                                        bf.setSubset(false);
                                        fd = writer.addSimple(bf);
                                        localFonts.put(psn.toString().substring(1), bf);
                                    }
                                    fontsTop.put(psn, fd.getIndirectReference());
                                    fonts.put(psn, fd.getIndirectReference());
                                }
                                ByteBuffer buf = cb.getInternalBuffer();
                                buf.append(psn.getBytes()).append(' ').append(((Float)dao[DA_SIZE]).floatValue()).append(" Tf ");
                                if (dao[DA_COLOR] != null)
                                    cb.setColorFill((Color)dao[DA_COLOR]);
                                PdfString s = new PdfString(cb.toString());
                                ((PdfDictionary)item.merged.get(k)).put(PdfName.DA, s);
                                ((PdfDictionary)item.widgets.get(k)).put(PdfName.DA, s);
                                markUsed((PdfDictionary)item.widgets.get(k));
                            }
                        }
                    }
                }
            }
            else if (name.equalsIgnoreCase("textcolor")) {
                for (int k = 0; k < item.merged.size(); ++k) {
                    if (hit.isHit(k)) {
                        PdfString da = (PdfString)PdfReader.getPdfObject(((PdfDictionary)item.merged.get(k)).get(PdfName.DA));
                        if (da != null) {
                            Object dao[] = splitDAelements(da.toUnicodeString());
                            PdfAppearance cb = new PdfAppearance();
                            if (dao[DA_FONT] != null) {
                                ByteBuffer buf = cb.getInternalBuffer();
                                buf.append(new PdfName((String)dao[DA_FONT]).getBytes()).append(' ').append(((Float)dao[DA_SIZE]).floatValue()).append(" Tf ");
                                cb.setColorFill((Color)value);
                                PdfString s = new PdfString(cb.toString());
                                ((PdfDictionary)item.merged.get(k)).put(PdfName.DA, s);
                                ((PdfDictionary)item.widgets.get(k)).put(PdfName.DA, s);
                                markUsed((PdfDictionary)item.widgets.get(k));
                            }
                        }
                    }
                }
            }
            else if (name.equalsIgnoreCase("textsize")) {
                for (int k = 0; k < item.merged.size(); ++k) {
                    if (hit.isHit(k)) {
                        PdfString da = (PdfString)PdfReader.getPdfObject(((PdfDictionary)item.merged.get(k)).get(PdfName.DA));
                        if (da != null) {
                            Object dao[] = splitDAelements(da.toUnicodeString());
                            PdfAppearance cb = new PdfAppearance();
                            if (dao[DA_FONT] != null) {
                                ByteBuffer buf = cb.getInternalBuffer();
                                buf.append(new PdfName((String)dao[DA_FONT]).getBytes()).append(' ').append(((Float)value).floatValue()).append(" Tf ");
                                if (dao[DA_COLOR] != null)
                                    cb.setColorFill((Color)dao[DA_COLOR]);
                                PdfString s = new PdfString(cb.toString());
                                ((PdfDictionary)item.merged.get(k)).put(PdfName.DA, s);
                                ((PdfDictionary)item.widgets.get(k)).put(PdfName.DA, s);
                                markUsed((PdfDictionary)item.widgets.get(k));
                            }
                        }
                    }
                }
            }
            else if (name.equalsIgnoreCase("bgcolor") || name.equalsIgnoreCase("bordercolor")) {
                PdfName dname = (name.equalsIgnoreCase("bgcolor") ? PdfName.BG : PdfName.BC);
                for (int k = 0; k < item.merged.size(); ++k) {
                    if (hit.isHit(k)) {
                        PdfObject obj = PdfReader.getPdfObject(((PdfDictionary)item.merged.get(k)).get(PdfName.MK));
                        markUsed(obj);
                        PdfDictionary mk = (PdfDictionary)obj;
                        if (mk == null) {
                            if (value == null)
                                return true;
                            mk = new PdfDictionary();
                            ((PdfDictionary)item.merged.get(k)).put(PdfName.MK, mk);
                            ((PdfDictionary)item.widgets.get(k)).put(PdfName.MK, mk);
                            markUsed((PdfDictionary)item.widgets.get(k));
                        }
                        if (value == null)
                            mk.remove(dname);
                        else
                            mk.put(dname, PdfFormField.getMKColor((Color)value));
                    }
                }
            }
            else
                return false;
            return true;
        }
        catch (Exception e) {
            throw new ExceptionConverter(e);
        }
    }
    
    /**
     * Sets a field property. Valid property names are:
     * <p>
     * <ul>
     * <li>flags - a set of flags specifying various characteristics of the field's widget annotation.
     * The value of this entry replaces that of the F entry in the form's corresponding annotation dictionary.<br>
     * <li>setflags - a set of flags to be set (turned on) in the F entry of the form's corresponding
     * widget annotation dictionary. Bits equal to 1 cause the corresponding bits in F to be set to 1.<br>
     * <li>clrflags - a set of flags to be cleared (turned off) in the F entry of the form's corresponding
     * widget annotation dictionary. Bits equal to 1 cause the corresponding
     * bits in F to be set to 0.<br>
     * <li>fflags - a set of flags specifying various characteristics of the field. The value
     * of this entry replaces that of the Ff entry in the form's corresponding field dictionary.<br>
     * <li>setfflags - a set of flags to be set (turned on) in the Ff entry of the form's corresponding
     * field dictionary. Bits equal to 1 cause the corresponding bits in Ff to be set to 1.<br>
     * <li>clrfflags - a set of flags to be cleared (turned off) in the Ff entry of the form's corresponding
     * field dictionary. Bits equal to 1 cause the corresponding bits in Ff
     * to be set to 0.<br>
     * </ul>
     * @param field the field name
     * @param name the property name
     * @param value the property value
     * @param inst an array of <CODE>int</CODE> indexing into <CODE>AcroField.Item.merged</CODE> elements to process.
     * Set to <CODE>null</CODE> to process all
     * @return <CODE>true</CODE> if the property exists, <CODE>false</CODE> otherwise
     */    
    public boolean setFieldProperty(String field, String name, int value, int inst[]) {
        if (writer == null)
            throw new RuntimeException("This AcroFields instance is read-only.");
        Item item = (Item)fields.get(field);
        if (item == null)
            return false;
        InstHit hit = new InstHit(inst);
        if (name.equalsIgnoreCase("flags")) {
            PdfNumber num = new PdfNumber(value);
            for (int k = 0; k < item.merged.size(); ++k) {
                if (hit.isHit(k)) {
                    ((PdfDictionary)item.merged.get(k)).put(PdfName.F, num);
                    ((PdfDictionary)item.widgets.get(k)).put(PdfName.F, num);
                    markUsed((PdfDictionary)item.widgets.get(k));
                }
            }
        }
        else if (name.equalsIgnoreCase("setflags")) {
            for (int k = 0; k < item.merged.size(); ++k) {
                if (hit.isHit(k)) {
                    PdfNumber num = (PdfNumber)PdfReader.getPdfObject(((PdfDictionary)item.widgets.get(k)).get(PdfName.F));
                    int val = 0;
                    if (num != null)
                        val = num.intValue();
                    num = new PdfNumber(val | value);
                    ((PdfDictionary)item.merged.get(k)).put(PdfName.F, num);
                    ((PdfDictionary)item.widgets.get(k)).put(PdfName.F, num);
                    markUsed((PdfDictionary)item.widgets.get(k));
                }
            }
        }
        else if (name.equalsIgnoreCase("clrflags")) {
            for (int k = 0; k < item.merged.size(); ++k) {
                if (hit.isHit(k)) {
                    PdfNumber num = (PdfNumber)PdfReader.getPdfObject(((PdfDictionary)item.widgets.get(k)).get(PdfName.F));
                    int val = 0;
                    if (num != null)
                        val = num.intValue();
                    num = new PdfNumber(val & (~value));
                    ((PdfDictionary)item.merged.get(k)).put(PdfName.F, num);
                    ((PdfDictionary)item.widgets.get(k)).put(PdfName.F, num);
                    markUsed((PdfDictionary)item.widgets.get(k));
                }
            }
        }
        else if (name.equalsIgnoreCase("fflags")) {
            PdfNumber num = new PdfNumber(value);
            for (int k = 0; k < item.merged.size(); ++k) {
                if (hit.isHit(k)) {
                    ((PdfDictionary)item.merged.get(k)).put(PdfName.FF, num);
                    ((PdfDictionary)item.values.get(k)).put(PdfName.FF, num);
                    markUsed((PdfDictionary)item.values.get(k));
                }
            }
        }
        else if (name.equalsIgnoreCase("setfflags")) {
            for (int k = 0; k < item.merged.size(); ++k) {
                if (hit.isHit(k)) {
                    PdfNumber num = (PdfNumber)PdfReader.getPdfObject(((PdfDictionary)item.values.get(k)).get(PdfName.FF));
                    int val = 0;
                    if (num != null)
                        val = num.intValue();
                    num = new PdfNumber(val | value);
                    ((PdfDictionary)item.merged.get(k)).put(PdfName.FF, num);
                    ((PdfDictionary)item.values.get(k)).put(PdfName.FF, num);
                    markUsed((PdfDictionary)item.values.get(k));
                }
            }
        }
        else if (name.equalsIgnoreCase("clrfflags")) {
            for (int k = 0; k < item.merged.size(); ++k) {
                if (hit.isHit(k)) {
                    PdfNumber num = (PdfNumber)PdfReader.getPdfObject(((PdfDictionary)item.values.get(k)).get(PdfName.FF));
                    int val = 0;
                    if (num != null)
                        val = num.intValue();
                    num = new PdfNumber(val & (~value));
                    ((PdfDictionary)item.merged.get(k)).put(PdfName.FF, num);
                    ((PdfDictionary)item.values.get(k)).put(PdfName.FF, num);
                    markUsed((PdfDictionary)item.values.get(k));
                }
            }
        }
        else
            return false;
        return true;
    }
    
    /**
     * Merges an XML data structure into this form.
     * @param n the top node of the data structure
     * @throws java.io.IOException on error
     * @throws com.lowagie.text.DocumentException o error
     */
    public void mergeXfaData(Node n) throws IOException, DocumentException {
        XfaForm.Xml2SomDatasets data = new XfaForm.Xml2SomDatasets(n);
        for (Iterator it = data.getOrder().iterator(); it.hasNext();) {
            String name = (String)it.next();
            String text = XfaForm.getNodeText((Node)data.getName2Node().get(name));
            setField(name, text);
        }
    }
    
    /** Sets the fields by FDF merging.
     * @param fdf the FDF form
     * @throws IOException on error
     * @throws DocumentException on error
     */    
    public void setFields(FdfReader fdf) throws IOException, DocumentException {
        HashMap fd = fdf.getFields();
        for (Iterator i = fd.keySet().iterator(); i.hasNext();) {
            String f = (String)i.next();
            String v = fdf.getFieldValue(f);
            if (v != null)
                setField(f, v);
        }
    }
    
    /** Sets the fields by XFDF merging.
     * @param xfdf the XFDF form
     * @throws IOException on error
     * @throws DocumentException on error
     */