pdfacroform.java

一个java操作pdf文件的开发包,很好用的.

        addFormField(field);
        return field;
    }

    public void setTextFieldParams(PdfFormField field, String text, String name, float llx, float lly, float urx, float ury) {
        field.setWidget(new Rectangle(llx, lly, urx, ury), PdfAnnotation.HIGHLIGHT_INVERT);
        field.setValueAsString(text);
        field.setDefaultValueAsString(text);
        field.setFieldName(name);
        field.setFlags(PdfAnnotation.FLAGS_PRINT);
        field.setPage();
    }

    public void drawSingleLineOfText(PdfFormField field, String text, BaseFont font, float fontSize, float llx, float lly, float urx, float ury) {
        PdfContentByte da = new PdfContentByte(writer);
        da.setFontAndSize(font, fontSize);
        da.resetRGBColorFill();
        field.setDefaultAppearanceString(da);
        PdfContentByte cb = writer.getDirectContent();
        cb.moveTo(0, 0);
        PdfAppearance tp = cb.createAppearance(urx - llx, ury - lly);
        tp.drawTextField(0f, 0f, urx - llx, ury - lly);
        tp.beginVariableText();
        tp.saveState();
        tp.rectangle(3f, 3f, urx - llx - 6f, ury - lly - 6f);
        tp.clip();
        tp.newPath();
        tp.beginText();
        tp.setFontAndSize(font, fontSize);
        tp.resetRGBColorFill();
        tp.setTextMatrix(4, (ury - lly) / 2 - (fontSize * 0.3f));
        tp.showText(text);
        tp.endText();
        tp.restoreState();
        tp.endVariableText();
        field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, tp);
    }

    public void drawMultiLineOfText(PdfFormField field, String text, BaseFont font, float fontSize, float llx, float lly, float urx, float ury) {
        PdfContentByte da = new PdfContentByte(writer);
        da.setFontAndSize(font, fontSize);
        da.resetRGBColorFill();
        field.setDefaultAppearanceString(da);
        PdfContentByte cb = writer.getDirectContent();
        cb.moveTo(0, 0);
        PdfAppearance tp = cb.createAppearance(urx - llx, ury - lly);
        tp.drawTextField(0f, 0f, urx - llx, ury - lly);
        tp.beginVariableText();
        tp.saveState();
        tp.rectangle(3f, 3f, urx - llx - 6f, ury - lly - 6f);
        tp.clip();
        tp.newPath();
        tp.beginText();
        tp.setFontAndSize(font, fontSize);
        tp.resetRGBColorFill();
        tp.setTextMatrix(4, 5);
        java.util.StringTokenizer tokenizer = new java.util.StringTokenizer(text, "\n");
        float yPos = ury - lly;
        while (tokenizer.hasMoreTokens()) {
            yPos -= fontSize * 1.2f;
            tp.showTextAligned(PdfContentByte.ALIGN_LEFT, tokenizer.nextToken(), 3, yPos, 0);
        }
        tp.endText();
        tp.restoreState();
        tp.endVariableText();
        field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, tp);
    }

    public PdfFormField addCheckBox(String name, String value, boolean status, float llx, float lly, float urx, float ury) {
        PdfFormField field = PdfFormField.createCheckBox(writer);
        setCheckBoxParams(field, name, value, status, llx, lly, urx, ury);
        drawCheckBoxAppearences(field, value, llx, lly, urx, ury);
        addFormField(field);
        return field;
    }

    public void setCheckBoxParams(PdfFormField field, String name, String value, boolean status, float llx, float lly, float urx, float ury) {
        field.setWidget(new Rectangle(llx, lly, urx, ury), PdfAnnotation.HIGHLIGHT_TOGGLE);
        field.setFieldName(name);
        if (status) {
            field.setValueAsName(value);
            field.setAppearanceState(value);
        }
        else {
            field.setValueAsName("Off");
            field.setAppearanceState("Off");
        }
        field.setFlags(PdfAnnotation.FLAGS_PRINT);
        field.setPage();
        field.setBorderStyle(new PdfBorderDictionary(1, PdfBorderDictionary.STYLE_SOLID));
    }

    public void drawCheckBoxAppearences(PdfFormField field, String value, float llx, float lly, float urx, float ury) {
        BaseFont font = null;
        try {
            font = BaseFont.createFont(BaseFont.ZAPFDINGBATS, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
        }
        catch(Exception e) {
            throw new ExceptionConverter(e);
        }
        float size = (ury - lly);
        PdfContentByte da = new PdfContentByte(writer);
        da.setFontAndSize(font, size);
        da.resetRGBColorFill();
        field.setDefaultAppearanceString(da);
        PdfContentByte cb = writer.getDirectContent();
        cb.moveTo(0, 0);
        PdfAppearance tpOn = cb.createAppearance(urx - llx, ury - lly);
        tpOn.drawTextField(0f, 0f, urx - llx, ury - lly);
        tpOn.saveState();
        tpOn.resetRGBColorFill();
        tpOn.beginText();
        tpOn.setFontAndSize(font, size);
        tpOn.showTextAligned(PdfContentByte.ALIGN_CENTER, "4", (urx - llx) / 2, (ury - lly) / 2 - (size * 0.3f), 0);
        tpOn.endText();
        tpOn.restoreState();
        field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, value, tpOn);
        PdfAppearance tpOff = cb.createAppearance(urx - llx, ury - lly);
        tpOff.drawTextField(0f, 0f, urx - llx, ury - lly);
        field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, "Off", tpOff);
    }

    public PdfFormField getRadioGroup(String name, String defaultValue, boolean noToggleToOff) {
        PdfFormField radio = PdfFormField.createRadioButton(writer, noToggleToOff);
        radio.setFieldName(name);
        radio.setValueAsName(defaultValue);
        return radio;
    }

    public void addRadioGroup(PdfFormField radiogroup) {
        addFormField(radiogroup);
    }

    public PdfFormField addRadioButton(PdfFormField radiogroup, String value, float llx, float lly, float urx, float ury) {
        PdfFormField radio = PdfFormField.createEmpty(writer);
        radio.setWidget(new Rectangle(llx, lly, urx, ury), PdfAnnotation.HIGHLIGHT_TOGGLE);
        String name = ((PdfName)radiogroup.get(PdfName.V)).toString().substring(1);
        if (name.equals(value)) {
            radio.setAppearanceState(value);
        }
        else {
            radio.setAppearanceState("Off");
        }
        drawRadioAppearences(radio, value, llx, lly, urx, ury);
        radiogroup.addKid(radio);
        return radio;
    }

    public void drawRadioAppearences(PdfFormField field, String value, float llx, float lly, float urx, float ury) {
        PdfContentByte cb = writer.getDirectContent();
        cb.moveTo(0, 0);
        PdfAppearance tpOn = cb.createAppearance(urx - llx, ury - lly);
        tpOn.drawRadioField(0f, 0f, urx - llx, ury - lly, true);
        field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, value, tpOn);
        PdfAppearance tpOff = cb.createAppearance(urx - llx, ury - lly);
        tpOff.drawRadioField(0f, 0f, urx - llx, ury - lly, false);
        field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, "Off", tpOff);
    }

    public PdfFormField addSelectList(String name, String[] options, String defaultValue, BaseFont font, float fontSize, float llx, float lly, float urx, float ury) {
        PdfFormField choice = PdfFormField.createList(writer, options, 0);
        setChoiceParams(choice, name, defaultValue, llx, lly, urx, ury);
        StringBuffer text = new StringBuffer();
        for (int i = 0; i < options.length; i++) {
            text.append(options[i]).append("\n");
        }
        drawMultiLineOfText(choice, text.toString(), font, fontSize, llx, lly, urx, ury);
        addFormField(choice);
        return choice;
    }

    public PdfFormField addSelectList(String name, String[][] options, String defaultValue, BaseFont font, float fontSize, float llx, float lly, float urx, float ury) {
        PdfFormField choice = PdfFormField.createList(writer, options, 0);
        setChoiceParams(choice, name, defaultValue, llx, lly, urx, ury);
        StringBuffer text = new StringBuffer();
        for (int i = 0; i < options.length; i++) {
            text.append(options[i][1]).append("\n");
        }
        drawMultiLineOfText(choice, text.toString(), font, fontSize, llx, lly, urx, ury);
        addFormField(choice);
        return choice;
    }

    public PdfFormField addComboBox(String name, String[] options, String defaultValue, boolean editable, BaseFont font, float fontSize, float llx, float lly, float urx, float ury) {
        PdfFormField choice = PdfFormField.createCombo(writer, editable, options, 0);
        setChoiceParams(choice, name, defaultValue, llx, lly, urx, ury);
        if (defaultValue == null) {
            defaultValue = options[0];
        }
        drawSingleLineOfText(choice, defaultValue, font, fontSize, llx, lly, urx, ury);
        addFormField(choice);
        return choice;
    }

    public PdfFormField addComboBox(String name, String[][] options, String defaultValue, boolean editable, BaseFont font, float fontSize, float llx, float lly, float urx, float ury) {
        PdfFormField choice = PdfFormField.createCombo(writer, editable, options, 0);
        setChoiceParams(choice, name, defaultValue, llx, lly, urx, ury);
        String value = null;
        for (int i = 0; i < options.length; i++) {
            if (options[i][0].equals(defaultValue)) {
                value = options[i][1];
                break;
            }
        }
        if (value == null) {
            value = options[0][1];
        }
        drawSingleLineOfText(choice, value, font, fontSize, llx, lly, urx, ury);
        addFormField(choice);
        return choice;
    }

    public void setChoiceParams(PdfFormField field, String name, String defaultValue, float llx, float lly, float urx, float ury) {
        field.setWidget(new Rectangle(llx, lly, urx, ury), PdfAnnotation.HIGHLIGHT_INVERT);
        if (defaultValue != null) {
            field.setValueAsString(defaultValue);
            field.setDefaultValueAsString(defaultValue);
        }
        field.setFieldName(name);
        field.setFlags(PdfAnnotation.FLAGS_PRINT);
        field.setPage();
        field.setBorderStyle(new PdfBorderDictionary(2, PdfBorderDictionary.STYLE_SOLID));
    }
}