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#region PDFsharp - A .NET library for processing PDF
//
// Authors:
// Stefan Lange (mailto:Stefan.Lange@pdfsharp.com)
//
// Copyright (c) 2005-2008 empira Software GmbH, Cologne (Germany)
//
// http://www.pdfsharp.com
// http://sourceforge.net/projects/pdfsharp
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#endregion
using System;
using System.Diagnostics;
using System.Collections;
using PdfSharp.Drawing;
using PdfSharp.Pdf.Advanced;
using PdfSharp.Pdf.Annotations;
using PdfSharp.Pdf.Internal;
namespace PdfSharp.Pdf.AcroForms
{
/// <summary>
/// Represents the text field.
/// </summary>
public sealed class PdfTextField : PdfAcroField
{
/// <summary>
/// Initializes a new instance of PdfTextField.
/// </summary>
internal PdfTextField(PdfDocument document)
: base(document)
{
}
internal PdfTextField(PdfDictionary dict)
: base(dict)
{
}
/// <summary>
/// Gets or sets the text value of the text field.
/// </summary>
public string Text
{
get { return Elements.GetString(Keys.V); }
set { Elements.SetString(Keys.V, value); RenderAppearance(); } //HACK
}
/// <summary>
/// Gets or sets the font used to draw the text of the field.
/// </summary>
public XFont Font
{
get { return this.font; }
set { this.font = value; }
}
XFont font = new XFont("Courier New", 10);
/// <summary>
/// Gets or sets the foreground color of the field.
/// </summary>
public XColor ForeColor
{
get { return this.foreColor; }
set { this.foreColor = value; }
}
XColor foreColor = XColors.Black;
/// <summary>
/// Gets or sets the background color of the field.
/// </summary>
public XColor BackColor
{
get { return this.backColor; }
set { this.backColor = value; }
}
XColor backColor = XColor.Empty;
/// <summary>
/// Gets or sets the maximum length of the field.
/// </summary>
/// <value>The length of the max.</value>
public int MaxLength
{
get { return Elements.GetInteger(Keys.MaxLen); }
set { Elements.SetInteger(Keys.MaxLen, value); }
}
/// <summary>
/// Gets or sets a value indicating whether the field has multiple lines.
/// </summary>
public bool MultiLine
{
get { return (Flags & PdfAcroFieldFlags.Multiline) != 0; }
set
{
if (value)
SetFlags |= PdfAcroFieldFlags.Multiline;
else
SetFlags &= ~PdfAcroFieldFlags.Multiline;
}
}
/// <summary>
/// Gets or sets a value indicating whether this field is used for passwords.
/// </summary>
public bool Password
{
get { return (Flags & PdfAcroFieldFlags.Password) != 0; }
set
{
if (value)
SetFlags |= PdfAcroFieldFlags.Password;
else
SetFlags &= ~PdfAcroFieldFlags.Password;
}
}
/// <summary>
/// Creates the normal appearance form X object for the annotation that represents
/// this acro form text field.
/// </summary>
void RenderAppearance()
{
PdfRectangle rect = Elements.GetRectangle(PdfAnnotation.Keys.Rect);
XForm form = new XForm(this.document, rect.Size);
XGraphics gfx = XGraphics.FromForm(form);
if (backColor != XColor.Empty)
gfx.DrawRectangle(new XSolidBrush(BackColor), rect.ToXRect() - rect.Location);
string text = Text;
if (text.Length > 0)
gfx.DrawString(Text, Font, new XSolidBrush(ForeColor),
rect.ToXRect() - rect.Location + new XPoint(2, 0), XStringFormats.TopLeft);
form.DrawingFinished();
// Get existing or create new appearance dictionary
PdfDictionary ap = Elements[PdfAnnotation.Keys.AP] as PdfDictionary;
if (ap == null)
{
ap = new PdfDictionary(this.document);
Elements[PdfAnnotation.Keys.AP] = ap;
}
// Set XRef to normal state
ap.Elements["/N"] = form.PdfForm.Reference;
}
internal override void PrepareForSave()
{
base.PrepareForSave();
RenderAppearance();
}
/// <summary>
/// Predefined keys of this dictionary.
/// The description comes from PDF 1.4 Reference.
/// </summary>
public new class Keys : PdfAcroField.Keys
{
/// <summary>
/// (Optional; inheritable) The maximum length of the fields text, in characters.
/// </summary>
[KeyInfo(KeyType.Integer | KeyType.Optional)]
public const string MaxLen = "/MaxLen";
/// <summary>
/// Gets the KeysMeta for these keys.
/// </summary>
internal static DictionaryMeta Meta
{
get
{
if (Keys.meta == null)
Keys.meta = CreateMeta(typeof(Keys));
return Keys.meta;
}
}
static DictionaryMeta meta;
}
/// <summary>
/// Gets the KeysMeta of this dictionary type.
/// </summary>
internal override DictionaryMeta Meta
{
get { return Keys.Meta; }
}
}
}
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