401 lines
16 KiB
C#
401 lines
16 KiB
C#
using System;
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/*
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* Copyright 2005 by Paulo Soares.
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* (the "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the License.
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*
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* The Original Code is 'iText, a free JAVA-PDF library'.
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*
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* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
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* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
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* All Rights Reserved.
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* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
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* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
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*
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* Contributor(s): all the names of the contributors are added in the source code
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* where applicable.
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*
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* Alternatively, the contents of this file may be used under the terms of the
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* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
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* provisions of LGPL are applicable instead of those above. If you wish to
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* allow use of your version of this file only under the terms of the LGPL
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* License and not to allow others to use your version of this file under
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* the MPL, indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by the LGPL.
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* If you do not delete the provisions above, a recipient may use your version
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* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the MPL as stated above or under the terms of the GNU
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* Library General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
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* details.
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*
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* If you didn't download this code from the following link, you should check if
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* you aren't using an obsolete version:
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* http://www.lowagie.com/iText/
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*/
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namespace iTextSharp.text.pdf {
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/**
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* Creates a radio or a check field.
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* <p>
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* Example usage:
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* <p>
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* <PRE>
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* Document document = new Document(PageSize.A4, 50, 50, 50, 50);
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* PdfWriter writer = PdfWriter.GetInstance(document, new FileOutputStream("output.pdf"));
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* document.Open();
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* PdfContentByte cb = writer.GetDirectContent();
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* RadioCheckField bt = new RadioCheckField(writer, new Rectangle(100, 100, 200, 200), "radio", "v1");
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* bt.SetCheckType(RadioCheckField.TYPE_CIRCLE);
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* bt.SetBackgroundColor(Color.CYAN);
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* bt.SetBorderStyle(PdfBorderDictionary.STYLE_SOLID);
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* bt.SetBorderColor(Color.red);
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* bt.SetTextColor(Color.yellow);
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* bt.SetBorderWidth(BaseField.BORDER_WIDTH_THICK);
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* bt.SetChecked(false);
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* PdfFormField f1 = bt.GetRadioField();
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* bt.SetOnValue("v2");
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* bt.SetChecked(true);
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* bt.SetBox(new Rectangle(100, 300, 200, 400));
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* PdfFormField f2 = bt.GetRadioField();
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* bt.SetChecked(false);
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* PdfFormField top = bt.GetRadioGroup(true, false);
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* bt.SetOnValue("v3");
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* bt.SetBox(new Rectangle(100, 500, 200, 600));
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* PdfFormField f3 = bt.GetRadioField();
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* top.AddKid(f1);
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* top.AddKid(f2);
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* top.AddKid(f3);
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* writer.AddAnnotation(top);
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* bt = new RadioCheckField(writer, new Rectangle(300, 300, 400, 400), "check1", "Yes");
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* bt.SetCheckType(RadioCheckField.TYPE_CHECK);
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* bt.SetBorderWidth(BaseField.BORDER_WIDTH_THIN);
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* bt.SetBorderColor(Color.black);
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* bt.SetBackgroundColor(Color.white);
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* PdfFormField ck = bt.GetCheckField();
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* writer.AddAnnotation(ck);
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* document.Close();
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* </PRE>
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* @author Paulo Soares (psoares@consiste.pt)
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*/
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public class RadioCheckField : BaseField {
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/** A field with the symbol check */
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public const int TYPE_CHECK = 1;
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/** A field with the symbol circle */
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public const int TYPE_CIRCLE = 2;
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/** A field with the symbol cross */
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public const int TYPE_CROSS = 3;
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/** A field with the symbol diamond */
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public const int TYPE_DIAMOND = 4;
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/** A field with the symbol square */
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public const int TYPE_SQUARE = 5;
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/** A field with the symbol star */
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public const int TYPE_STAR = 6;
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private static String[] typeChars = {"4", "l", "8", "u", "n", "H"};
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/**
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* Holds value of property checkType.
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*/
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private int checkType;
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/**
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* Holds value of property onValue.
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*/
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private String onValue;
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/**
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* Holds value of property checked.
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*/
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private bool vchecked;
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/**
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* Creates a new instance of RadioCheckField
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* @param writer the document <CODE>PdfWriter</CODE>
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* @param box the field location and dimensions
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* @param fieldName the field name. It must not be <CODE>null</CODE>
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* @param onValue the value when the field is checked
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*/
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public RadioCheckField(PdfWriter writer, Rectangle box, String fieldName, String onValue) : base(writer, box, fieldName) {
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OnValue = onValue;
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CheckType = TYPE_CIRCLE;
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}
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/**
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* Sets the checked symbol. It can be
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* <CODE>TYPE_CHECK</CODE>,
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* <CODE>TYPE_CIRCLE</CODE>,
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* <CODE>TYPE_CROSS</CODE>,
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* <CODE>TYPE_DIAMOND</CODE>,
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* <CODE>TYPE_SQUARE</CODE> and
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* <CODE>TYPE_STAR</CODE>.
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* @param checkType the checked symbol
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*/
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public int CheckType {
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get {
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return checkType;
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}
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set {
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checkType = value;
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if (checkType < TYPE_CHECK || checkType > TYPE_STAR)
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checkType = TYPE_CIRCLE;
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Text = typeChars[checkType - 1];
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Font = BaseFont.CreateFont(BaseFont.ZAPFDINGBATS, BaseFont.WINANSI, false);
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}
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}
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/**
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* Sets the value when the field is checked.
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* @param onValue the value when the field is checked
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*/
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public string OnValue {
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get {
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return onValue;
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}
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set {
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onValue = value;
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}
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}
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/**
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* Sets the state of the field to checked or unchecked.
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* @param checked the state of the field, <CODE>true</CODE> for checked
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* and <CODE>false</CODE> for unchecked
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*/
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public bool Checked {
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get {
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return vchecked;
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}
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set {
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vchecked = value;
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}
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}
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/**
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* Gets the field appearance.
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* @param isRadio <CODE>true</CODE> for a radio field and <CODE>false</CODE>
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* for a check field
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* @param on <CODE>true</CODE> for the checked state, <CODE>false</CODE>
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* otherwise
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* @throws IOException on error
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* @throws DocumentException on error
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* @return the appearance
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*/
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public PdfAppearance GetAppearance(bool isRadio, bool on) {
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if (isRadio && checkType == TYPE_CIRCLE)
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return GetAppearanceRadioCircle(on);
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PdfAppearance app = GetBorderAppearance();
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if (!on)
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return app;
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BaseFont ufont = RealFont;
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bool borderExtra = borderStyle == PdfBorderDictionary.STYLE_BEVELED || borderStyle == PdfBorderDictionary.STYLE_INSET;
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float h = box.Height - borderWidth * 2;
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float bw2 = borderWidth;
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if (borderExtra) {
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h -= borderWidth * 2;
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bw2 *= 2;
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}
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float offsetX = (borderExtra ? 2 * borderWidth : borderWidth);
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offsetX = Math.Max(offsetX, 1);
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float offX = Math.Min(bw2, offsetX);
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float wt = box.Width - 2 * offX;
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float ht = box.Height - 2 * offX;
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float fsize = fontSize;
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if (fsize == 0) {
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float bw = ufont.GetWidthPoint(text, 1);
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if (bw == 0)
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fsize = 12;
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else
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fsize = wt / bw;
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float nfsize = h / (ufont.GetFontDescriptor(BaseFont.ASCENT, 1));
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fsize = Math.Min(fsize, nfsize);
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}
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app.SaveState();
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app.Rectangle(offX, offX, wt, ht);
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app.Clip();
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app.NewPath();
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if (textColor == null)
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app.ResetGrayFill();
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else
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app.SetColorFill(textColor);
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app.BeginText();
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app.SetFontAndSize(ufont, fsize);
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app.SetTextMatrix((box.Width - ufont.GetWidthPoint(text, fsize)) / 2,
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(box.Height - ufont.GetAscentPoint(text, fsize)) / 2);
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app.ShowText(text);
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app.EndText();
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app.RestoreState();
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return app;
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}
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/**
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* Gets the special field appearance for the radio circle.
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* @param on <CODE>true</CODE> for the checked state, <CODE>false</CODE>
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* otherwise
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* @return the appearance
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*/
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public PdfAppearance GetAppearanceRadioCircle(bool on) {
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PdfAppearance app = PdfAppearance.CreateAppearance(writer, box.Width, box.Height);
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switch (rotation) {
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case 90:
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app.SetMatrix(0, 1, -1, 0, box.Height, 0);
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break;
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case 180:
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app.SetMatrix(-1, 0, 0, -1, box.Width, box.Height);
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break;
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case 270:
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app.SetMatrix(0, -1, 1, 0, 0, box.Width);
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break;
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}
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Rectangle boxc = new Rectangle(app.BoundingBox);
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float cx = boxc.Width / 2;
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float cy = boxc.Height / 2;
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float r = (Math.Min(boxc.Width, boxc.Height) - borderWidth) / 2;
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if (r <= 0)
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return app;
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if (backgroundColor != null) {
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app.SetColorFill(backgroundColor);
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app.Circle(cx, cy, r + borderWidth / 2);
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app.Fill();
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}
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if (borderWidth > 0 && borderColor != null) {
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app.SetLineWidth(borderWidth);
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app.SetColorStroke(borderColor);
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app.Circle(cx, cy, r);
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app.Stroke();
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}
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if (on) {
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if (textColor == null)
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app.ResetGrayFill();
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else
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app.SetColorFill(textColor);
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app.Circle(cx, cy, r / 2);
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app.Fill();
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}
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return app;
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}
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/**
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* Gets a radio group. It's composed of the field specific keys, without the widget
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* ones. This field is to be used as a field aggregator with {@link PdfFormField#addKid(PdfFormField) AddKid()}.
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* @param noToggleToOff if <CODE>true</CODE>, exactly one radio button must be selected at all
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* times; clicking the currently selected button has no effect.
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* If <CODE>false</CODE>, clicking
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* the selected button deselects it, leaving no button selected.
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* @param radiosInUnison if <CODE>true</CODE>, a group of radio buttons within a radio button field that
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* use the same value for the on state will turn on and off in unison; that is if
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* one is checked, they are all checked. If <CODE>false</CODE>, the buttons are mutually exclusive
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* (the same behavior as HTML radio buttons)
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* @return the radio group
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*/
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public PdfFormField GetRadioGroup(bool noToggleToOff, bool radiosInUnison) {
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PdfFormField field = PdfFormField.CreateRadioButton(writer, noToggleToOff);
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if (radiosInUnison)
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field.SetFieldFlags(PdfFormField.FF_RADIOSINUNISON);
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field.FieldName = fieldName;
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if ((options & READ_ONLY) != 0)
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field.SetFieldFlags(PdfFormField.FF_READ_ONLY);
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if ((options & REQUIRED) != 0)
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field.SetFieldFlags(PdfFormField.FF_REQUIRED);
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field.ValueAsName = vchecked ? onValue : "Off";
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return field;
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}
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/**
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* Gets the radio field. It's only composed of the widget keys and must be used
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* with {@link #getRadioGroup(bool,bool)}.
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* @return the radio field
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* @throws IOException on error
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* @throws DocumentException on error
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*/
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public PdfFormField RadioField {
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get {
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return GetField(true);
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}
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}
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/**
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* Gets the check field.
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* @return the check field
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* @throws IOException on error
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* @throws DocumentException on error
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*/
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public PdfFormField CheckField {
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get {
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return GetField(false);
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}
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}
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/**
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* Gets a radio or check field.
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* @param isRadio <CODE>true</CODE> to get a radio field, <CODE>false</CODE> to get
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* a check field
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* @throws IOException on error
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* @throws DocumentException on error
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* @return the field
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*/
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protected PdfFormField GetField(bool isRadio) {
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PdfFormField field = null;
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if (isRadio)
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field = PdfFormField.CreateEmpty(writer);
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else
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field = PdfFormField.CreateCheckBox(writer);
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field.SetWidget(box, PdfAnnotation.HIGHLIGHT_INVERT);
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if (!isRadio) {
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field.FieldName = fieldName;
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if ((options & READ_ONLY) != 0)
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field.SetFieldFlags(PdfFormField.FF_READ_ONLY);
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if ((options & REQUIRED) != 0)
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field.SetFieldFlags(PdfFormField.FF_REQUIRED);
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field.ValueAsName = vchecked ? onValue : "Off";
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}
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if (text != null)
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field.MKNormalCaption = text;
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if (rotation != 0)
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field.MKRotation = rotation;
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field.BorderStyle = new PdfBorderDictionary(borderWidth, borderStyle, new PdfDashPattern(3));
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PdfAppearance tpon = GetAppearance(isRadio, true);
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PdfAppearance tpoff = GetAppearance(isRadio, false);
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field.SetAppearance(PdfAnnotation.APPEARANCE_NORMAL, onValue, tpon);
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field.SetAppearance(PdfAnnotation.APPEARANCE_NORMAL, "Off", tpoff);
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field.AppearanceState = vchecked ? onValue : "Off";
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PdfAppearance da = (PdfAppearance)tpon.Duplicate;
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da.SetFontAndSize(RealFont, fontSize);
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if (textColor == null)
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da.SetGrayFill(0);
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else
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da.SetColorFill(textColor);
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field.DefaultAppearanceString = da;
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if (borderColor != null)
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field.MKBorderColor = borderColor;
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if (backgroundColor != null)
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field.MKBackgroundColor = backgroundColor;
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switch (visibility) {
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case HIDDEN:
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field.Flags = PdfAnnotation.FLAGS_PRINT | PdfAnnotation.FLAGS_HIDDEN;
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break;
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case VISIBLE_BUT_DOES_NOT_PRINT:
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break;
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case HIDDEN_BUT_PRINTABLE:
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field.Flags = PdfAnnotation.FLAGS_PRINT | PdfAnnotation.FLAGS_NOVIEW;
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break;
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default:
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field.Flags = PdfAnnotation.FLAGS_PRINT;
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break;
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}
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return field;
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}
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}
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} |