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#region PDFsharp - A .NET library for processing PDF
//
// Authors:
// Klaus Potzesny (mailto:Klaus.Potzesny@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 PdfSharp.Drawing;
namespace PdfSharp.Drawing.BarCodes
{
/// <summary>
/// Summary description for Interleave5of9.
/// </summary>
public class Code2of5Interleaved : ThickThinBarCode
{
/// <summary>
/// Initializes a new instance of Interleaved2of5.
/// </summary>
public Code2of5Interleaved()
: base("", XSize.Empty, CodeDirection.LeftToRight)
{
}
/// <summary>
/// Initializes a new instance of Interleaved2of5.
/// </summary>
public Code2of5Interleaved(string code)
: base(code, XSize.Empty, CodeDirection.LeftToRight)
{
}
/// <summary>
/// Initializes a new instance of Interleaved2of5.
/// </summary>
public Code2of5Interleaved(string code, XSize size)
: base(code, size, CodeDirection.LeftToRight)
{
}
/// <summary>
/// Initializes a new instance of Interleaved2of5.
/// </summary>
public Code2of5Interleaved(string code, XSize size, CodeDirection direction)
: base(code, size, direction)
{
}
/// <summary>
/// Returns an array of size 5 that represents the thick (true) and thin (false) lines or spaces
/// representing the specified digit.
/// </summary>
/// <param name="digit">The digit to represent.</param>
static bool[] ThickAndThinLines(int digit)
{
return Lines[digit];
}
static bool[][] Lines = new bool[][]
{
new bool[] {false, false, true, true, false},
new bool[] {true, false, false, false, true},
new bool[] {false, true, false, false, true},
new bool[] {true, true, false, false, false},
new bool[] {false, false, true, false, true},
new bool[] {true, false, true, false, false},
new bool[] {false, true, true, false, false},
new bool[] {false, false, false, true, true},
new bool[] {true, false, false, true, false},
new bool[] {false, true, false, true, false},
};
/// <summary>
/// Renders the bar code.
/// </summary>
protected internal override void Render(XGraphics gfx, XBrush brush, XFont font, XPoint position)
{
XGraphicsState state = gfx.Save();
BarCodeRenderInfo info = new BarCodeRenderInfo(gfx, brush, font, position);
InitRendering(info);
info.CurrPosInString = 0;
//info.CurrPos = info.Center - this.size / 2;
info.CurrPos = position - CodeBase.CalcDistance(AnchorType.TopLeft, this.anchor, this.size);
if (TurboBit)
RenderTurboBit(info, true);
RenderStart(info);
while (info.CurrPosInString < this.text.Length)
RenderNextPair(info);
RenderStop(info);
if (TurboBit)
RenderTurboBit(info, false);
if (this.TextLocation != TextLocation.None)
RenderText(info);
gfx.Restore(state);
}
/// <summary>
/// Calculates the thick and thin line widths,
/// taking into acount the required rendering size.
/// </summary>
internal override void CalcThinBarWidth(BarCodeRenderInfo info)
{
/*
* The total width is the sum of the following parts:
* Starting lines = 4 * thin
* +
* Code Representation = (2 * thick + 3 * thin) * code.Length
* +
* Stopping lines = 1 * thick + 2 * thin
*
* with r = relation ( = thick / thin), this results in
*
* Total width = (6 + r + (2 * r + 3) * text.Length) * thin
*/
double thinLineAmount = 6 + this.wideNarrowRatio + (2 * this.wideNarrowRatio + 3) * this.text.Length;
info.ThinBarWidth = this.Size.Width / thinLineAmount;
}
private void RenderStart(BarCodeRenderInfo info)
{
RenderBar(info, false);
RenderGap(info, false);
RenderBar(info, false);
RenderGap(info, false);
}
private void RenderStop(BarCodeRenderInfo info)
{
RenderBar(info, true);
RenderGap(info, false);
RenderBar(info, false);
}
/// <summary>
/// Renders the next digit pair as bar code element.
/// </summary>
private void RenderNextPair(BarCodeRenderInfo info)
{
int digitForLines = int.Parse(this.text[info.CurrPosInString].ToString());
int digitForGaps = int.Parse(this.text[info.CurrPosInString + 1].ToString());
bool[] linesArray = Lines[digitForLines];
bool[] gapsArray = Lines[digitForGaps];
for (int idx = 0; idx < 5; ++idx)
{
RenderBar(info, linesArray[idx]);
RenderGap(info, gapsArray[idx]);
}
info.CurrPosInString += 2;
}
/// <summary>
/// Checks the code to be convertible into an interleaved 2 of 5 bar code.
/// </summary>
/// <param name="text">The code to be checked.</param>
protected override void CheckCode(string text)
{
#if true_
if (text == null)
throw new ArgumentNullException("text");
if (text == "")
throw new ArgumentException(BcgSR.Invalid2Of5Code(text));
if (text.Length % 2 != 0)
throw new ArgumentException(BcgSR.Invalid2Of5Code(text));
foreach (char ch in text)
{
if (!Char.IsDigit(ch))
throw new ArgumentException(BcgSR.Invalid2Of5Code(text));
}
#endif
}
}
}
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