310 lines
12 KiB
C#
310 lines
12 KiB
C#
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#region PDFsharp - A .NET library for processing PDF
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//
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// Authors:
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// Stefan Lange
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//
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// Copyright (c) 2005-2017 empira Software GmbH, Cologne Area (Germany)
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//
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// http://www.pdfsharp.com
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// http://sourceforge.net/projects/pdfsharp
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#endregion
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using PdfSharp.Drawing;
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using PdfSharp.Pdf.Advanced;
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using PdfSharp.Pdf.Annotations;
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using PdfSharp.Pdf.Internal;
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namespace PdfSharp.Pdf.AcroForms
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{
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/// <summary>
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/// Represents the text field.
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/// </summary>
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public sealed class PdfTextField : PdfAcroField
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{
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/// <summary>
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/// Initializes a new instance of PdfTextField.
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/// </summary>
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internal PdfTextField(PdfDocument document)
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: base(document)
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{ }
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internal PdfTextField(PdfDictionary dict)
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: base(dict)
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{ }
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/// <summary>
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/// Gets or sets the text value of the text field.
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/// </summary>
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public string Text
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{
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get { return Elements.GetString(Keys.V); }
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set { Elements.SetString(Keys.V, value); RenderAppearance(); } //HACK in PdfTextField
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}
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/// <summary>
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/// Gets or sets the font used to draw the text of the field.
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/// </summary>
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public XFont Font
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{
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get { return _font; }
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set { _font = value; }
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}
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XFont _font = new XFont("Courier New", 10);
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/// <summary>
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/// Gets or sets the foreground color of the field.
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/// </summary>
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public XColor ForeColor
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{
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get { return _foreColor; }
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set { _foreColor = value; }
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}
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XColor _foreColor = XColors.Black;
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/// <summary>
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/// Gets or sets the background color of the field.
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/// </summary>
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public XColor BackColor
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{
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get { return _backColor; }
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set { _backColor = value; }
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}
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XColor _backColor = XColor.Empty;
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/// <summary>
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/// Gets or sets the maximum length of the field.
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/// </summary>
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/// <value>The length of the max.</value>
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public int MaxLength
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{
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get { return Elements.GetInteger(Keys.MaxLen); }
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set { Elements.SetInteger(Keys.MaxLen, value); }
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}
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/// <summary>
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/// Gets or sets a value indicating whether the field has multiple lines.
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/// </summary>
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public bool MultiLine
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{
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get { return (Flags & PdfAcroFieldFlags.Multiline) != 0; }
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set
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{
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if (value)
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SetFlags |= PdfAcroFieldFlags.Multiline;
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else
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SetFlags &= ~PdfAcroFieldFlags.Multiline;
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether this field is used for passwords.
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/// </summary>
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public bool Password
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{
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get { return (Flags & PdfAcroFieldFlags.Password) != 0; }
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set
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{
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if (value)
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SetFlags |= PdfAcroFieldFlags.Password;
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else
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SetFlags &= ~PdfAcroFieldFlags.Password;
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}
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}
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/// <summary>
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/// Creates the normal appearance form X object for the annotation that represents
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/// this acro form text field.
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/// </summary>
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void RenderAppearance()
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{
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#if true_
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PdfFormXObject xobj = new PdfFormXObject(Owner);
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Owner.Internals.AddObject(xobj);
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xobj.Elements["/BBox"] = new PdfLiteral("[0 0 122.653 12.707]");
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xobj.Elements["/FormType"] = new PdfLiteral("1");
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xobj.Elements["/Matrix"] = new PdfLiteral("[1 0 0 1 0 0]");
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PdfDictionary res = new PdfDictionary(Owner);
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xobj.Elements["/Resources"] = res;
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res.Elements["/Font"] = new PdfLiteral("<< /Helv 28 0 R >> /ProcSet [/PDF /Text]");
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xobj.Elements["/Subtype"] = new PdfLiteral("/Form");
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xobj.Elements["/Type"] = new PdfLiteral("/XObject");
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string s =
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"/Tx BMC " + '\n' +
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"q" + '\n' +
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"1 1 120.653 10.707 re" + '\n' +
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"W" + '\n' +
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"n" + '\n' +
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"BT" + '\n' +
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"/Helv 7.93 Tf" + '\n' +
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"0 g" + '\n' +
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"2 3.412 Td" + '\n' +
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"(Hello ) Tj" + '\n' +
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"20.256 0 Td" + '\n' +
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"(XXX) Tj" + '\n' +
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"ET" + '\n' +
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"Q" + '\n' +
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"";//"EMC";
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int length = s.Length;
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byte[] stream = new byte[length];
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for (int idx = 0; idx < length; idx++)
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stream[idx] = (byte)s[idx];
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xobj.CreateStream(stream);
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// Get existing or create new appearance dictionary
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PdfDictionary ap = Elements[PdfAnnotation.Keys.AP] as PdfDictionary;
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if (ap == null)
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{
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ap = new PdfDictionary(_document);
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Elements[PdfAnnotation.Keys.AP] = ap;
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}
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// Set XRef to normal state
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ap.Elements["/N"] = xobj.Reference;
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//// HACK
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//string m =
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//"<?xpacket begin=\"\" id=\"W5M0MpCehiHzreSzNTczkc9d\"?>" + '\n' +
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//"<x:xmpmeta xmlns:x=\"adobe:ns:meta/\" x:xmptk=\"Adobe XMP Core 4.0-c321 44.398116, Tue Aug 04 2009 14:24:39\"> " + '\n' +
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//" <rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"> " + '\n' +
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//" <rdf:Description rdf:about=\"\" " + '\n' +
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//" xmlns:pdf=\"http://ns.adobe.com/pdf/1.3/\"> " + '\n' +
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//" <pdf:Producer>PDFsharp 1.40.2150-g (www.pdfsharp.com) (Original: Powered By Crystal)</pdf:Producer> " + '\n' +
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//" </rdf:Description> " + '\n' +
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//" <rdf:Description rdf:about=\"\" " + '\n' +
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//" xmlns:xap=\"http://ns.adobe.com/xap/1.0/\"> " + '\n' +
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//" <xap:ModifyDate>2011-07-11T23:15:09+02:00</xap:ModifyDate> " + '\n' +
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//" <xap:CreateDate>2011-05-19T16:26:51+03:00</xap:CreateDate> " + '\n' +
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//" <xap:MetadataDate>2011-07-11T23:15:09+02:00</xap:MetadataDate> " + '\n' +
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//" <xap:CreatorTool>Crystal Reports</xap:CreatorTool> " + '\n' +
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//" </rdf:Description> " + '\n' +
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//" <rdf:Description rdf:about=\"\" " + '\n' +
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//" xmlns:dc=\"http://purl.org/dc/elements/1.1/\"> " + '\n' +
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//" <dc:format>application/pdf</dc:format> " + '\n' +
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//" </rdf:Description> " + '\n' +
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//" <rdf:Description rdf:about=\"\" " + '\n' +
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//" xmlns:xapMM=\"http://ns.adobe.com/xap/1.0/mm/\"> " + '\n' +
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//" <xapMM:DocumentID>uuid:68249d89-baed-4384-9a2d-fbf8ace75c45</xapMM:DocumentID> " + '\n' +
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//" <xapMM:InstanceID>uuid:3d5f2f46-c140-416f-baf2-7f9c970cef1d</xapMM:InstanceID> " + '\n' +
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//" </rdf:Description> " + '\n' +
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//" </rdf:RDF> " + '\n' +
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//"</x:xmpmeta> " + '\n' +
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//" " + '\n' +
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//" " + '\n' +
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//" " + '\n' +
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//" " + '\n' +
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//" " + '\n' +
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//" " + '\n' +
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//" " + '\n' +
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//" " + '\n' +
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//" " + '\n' +
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//" " + '\n' +
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//"<?xpacket end=\"w\"?>";
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//PdfDictionary mdict = (PdfDictionary)_document.Internals.GetObject(new PdfObjectID(32));
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//length = m.Length;
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//stream = new byte[length];
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//for (int idx = 0; idx < length; idx++)
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// stream[idx] = (byte)m[idx];
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//mdict.Stream.Value = stream;
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#else
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PdfRectangle rect = Elements.GetRectangle(PdfAnnotation.Keys.Rect);
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XForm form = new XForm(_document, rect.Size);
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XGraphics gfx = XGraphics.FromForm(form);
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if (_backColor != XColor.Empty)
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gfx.DrawRectangle(new XSolidBrush(BackColor), rect.ToXRect() - rect.Location);
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string text = Text;
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if (text.Length > 0)
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gfx.DrawString(Text, Font, new XSolidBrush(ForeColor),
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rect.ToXRect() - rect.Location + new XPoint(2, 0), XStringFormats.TopLeft);
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form.DrawingFinished();
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form.PdfForm.Elements.Add("/FormType", new PdfLiteral("1"));
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// Get existing or create new appearance dictionary.
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PdfDictionary ap = Elements[PdfAnnotation.Keys.AP] as PdfDictionary;
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if (ap == null)
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{
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ap = new PdfDictionary(_document);
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Elements[PdfAnnotation.Keys.AP] = ap;
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}
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// Set XRef to normal state
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ap.Elements["/N"] = form.PdfForm.Reference;
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PdfFormXObject xobj = form.PdfForm;
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string s = xobj.Stream.ToString();
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// Thank you Adobe: Without putting the content in 'EMC brackets'
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// the text is not rendered by PDF Reader 9 or higher.
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s = "/Tx BMC\n" + s + "\nEMC";
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xobj.Stream.Value = new RawEncoding().GetBytes(s);
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#endif
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}
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internal override void PrepareForSave()
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{
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base.PrepareForSave();
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RenderAppearance();
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}
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/// <summary>
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/// Predefined keys of this dictionary.
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/// The description comes from PDF 1.4 Reference.
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/// </summary>
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public new class Keys : PdfAcroField.Keys
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{
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/// <summary>
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/// (Optional; inheritable) The maximum length of the field<6C>s text, in characters.
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/// </summary>
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[KeyInfo(KeyType.Integer | KeyType.Optional)]
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public const string MaxLen = "/MaxLen";
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/// <summary>
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/// Gets the KeysMeta for these keys.
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/// </summary>
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internal static DictionaryMeta Meta
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{
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get { return _meta ?? (_meta = CreateMeta(typeof(Keys))); }
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}
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static DictionaryMeta _meta;
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}
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/// <summary>
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/// Gets the KeysMeta of this dictionary type.
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/// </summary>
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internal override DictionaryMeta Meta
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{
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get { return Keys.Meta; }
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}
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}
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}
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