272 lines
11 KiB
C#
272 lines
11 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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// Klaus Potzesny
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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 System;
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namespace PdfSharp.Drawing.BarCodes
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{
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/// <summary>
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/// Imlpementation of the Code 3 of 9 bar code.
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/// </summary>
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// ReSharper disable once InconsistentNaming
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public class Code3of9Standard : ThickThinBarCode
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{
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/// <summary>
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/// Initializes a new instance of Standard3of9.
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/// </summary>
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public Code3of9Standard()
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: base("", XSize.Empty, CodeDirection.LeftToRight)
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{ }
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/// <summary>
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/// Initializes a new instance of Standard3of9.
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/// </summary>
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public Code3of9Standard(string code)
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: base(code, XSize.Empty, CodeDirection.LeftToRight)
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{ }
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/// <summary>
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/// Initializes a new instance of Standard3of9.
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/// </summary>
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public Code3of9Standard(string code, XSize size)
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: base(code, size, CodeDirection.LeftToRight)
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{ }
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/// <summary>
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/// Initializes a new instance of Standard3of9.
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/// </summary>
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public Code3of9Standard(string code, XSize size, CodeDirection direction)
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: base(code, size, direction)
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{ }
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/// <summary>
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/// Returns an array of size 9 that represents the thick (true) and thin (false) lines and spaces
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/// representing the specified digit.
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/// </summary>
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/// <param name="ch">The character to represent.</param>
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private static bool[] ThickThinLines(char ch)
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{
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return Lines["0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%*".IndexOf(ch)];
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}
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static readonly bool[][] Lines =
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{
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// '0'
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new bool[] {false, false, false, true, true, false, true, false, false},
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// '1'
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new bool[] {true, false, false, true, false, false, false, false, true},
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// '2'
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new bool[] {false, false, true, true, false, false, false, false, true},
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// '3'
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new bool[] {true, false, true, true, false, false, false, false, false},
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// '4'
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new bool[] {false, false, false, true, true, false, false, false, true},
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// '5'
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new bool[] {true, false, false, true, true, false, false, false, false},
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// '6'
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new bool[] {false, false, true, true, true, false, false, false, false},
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// '7'
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new bool[] {false, false, false, true, false, false, true, false, true},
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// '8'
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new bool[] {true, false, false, true, false, false, true, false, false},
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// '9'
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new bool[] {false, false, true, true, false, false, true, false, false},
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// 'A'
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new bool[] {true, false, false, false, false, true, false, false, true},
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// 'B'
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new bool[] {false, false, true, false, false, true, false, false, true},
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// 'C'
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new bool[] {true, false, true, false, false, true, false, false, false},
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// 'D'
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new bool[] {false, false, false, false, true, true, false, false, true},
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// 'E'
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new bool[] {true, false, false, false, true, true, false, false, false},
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// 'F'
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new bool[] {false, false, true, false, true, true, false, false, false},
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// 'G'
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new bool[] {false, false, false, false, false, true, true, false, true},
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// 'H'
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new bool[] {true, false, false, false, false, true, true, false, false},
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// 'I'
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new bool[] {false, false, true, false, false, true, true, false, false},
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// 'J'
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new bool[] {false, false, false, false, true, true, true, false, false},
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// 'K'
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new bool[] {true, false, false, false, false, false, false, true, true},
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// 'L'
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new bool[] {false, false, true, false, false, false, false, true, true},
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// 'M'
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new bool[] {true, false, true, false, false, false, false, true, false},
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// 'N'
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new bool[] {false, false, false, false, true, false, false, true, true},
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// 'O'
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new bool[] {true, false, false, false, true, false, false, true, false},
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// 'P':
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new bool[] {false, false, true, false, true, false, false, true, false},
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// 'Q'
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new bool[] {false, false, false, false, false, false, true, true, true},
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// 'R'
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new bool[] {true, false, false, false, false, false, true, true, false},
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// 'S'
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new bool[] {false, false, true, false, false, false, true, true, false},
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// 'T'
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new bool[] {false, false, false, false, true, false, true, true, false},
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// 'U'
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new bool[] {true, true, false, false, false, false, false, false, true},
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// 'V'
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new bool[] {false, true, true, false, false, false, false, false, true},
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// 'W'
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new bool[] {true, true, true, false, false, false, false, false, false},
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// 'X'
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new bool[] {false, true, false, false, true, false, false, false, true},
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// 'Y'
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new bool[] {true, true, false, false, true, false, false, false, false},
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// 'Z'
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new bool[] {false, true, true, false, true, false, false, false, false},
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// '-'
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new bool[] {false, true, false, false, false, false, true, false, true},
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// '.'
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new bool[] {true, true, false, false, false, false, true, false, false},
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// ' '
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new bool[] {false, true, true, false, false, false, true, false, false},
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// '$'
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new bool[] {false, true, false, true, false, true, false, false, false},
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// '/'
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new bool[] {false, true, false, true, false, false, false, true, false},
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// '+'
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new bool[] {false, true, false, false, false, true, false, true, false},
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// '%'
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new bool[] {false, false, false, true, false, true, false, true, false},
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// '*'
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new bool[] {false, true, false, false, true, false, true, false, false},
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};
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/// <summary>
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/// Calculates the thick and thin line widths,
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/// taking into account the required rendering size.
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/// </summary>
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internal override void CalcThinBarWidth(BarCodeRenderInfo info)
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{
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/*
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* The total width is the sum of the following parts:
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* Starting lines = 3 * thick + 7 * thin
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* +
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* Code Representation = (3 * thick + 7 * thin) * code.Length
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* +
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* Stopping lines = 3 * thick + 6 * thin
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*
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* with r = relation ( = thick / thin), this results in
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*
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* Total width = (13 + 6 * r + (3 * r + 7) * code.Length) * thin
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*/
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double thinLineAmount = 13 + 6 * WideNarrowRatio + (3 * WideNarrowRatio + 7) * Text.Length;
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info.ThinBarWidth = Size.Width / thinLineAmount;
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}
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/// <summary>
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/// Checks the code to be convertible into an standard 3 of 9 bar code.
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/// </summary>
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/// <param name="text">The code to be checked.</param>
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protected override void CheckCode(string text)
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{
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if (text == null)
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throw new ArgumentNullException("text");
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if (text.Length == 0)
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throw new ArgumentException(BcgSR.Invalid3Of9Code(text));
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foreach (char ch in text)
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{
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if ("0123456789ABCDEFGHIJKLMNOP'QRSTUVWXYZ-. $/+%*".IndexOf(ch) < 0)
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throw new ArgumentException(BcgSR.Invalid3Of9Code(text));
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}
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}
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/// <summary>
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/// Renders the bar code.
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/// </summary>
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protected internal override void Render(XGraphics gfx, XBrush brush, XFont font, XPoint position)
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{
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XGraphicsState state = gfx.Save();
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BarCodeRenderInfo info = new BarCodeRenderInfo(gfx, brush, font, position);
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InitRendering(info);
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info.CurrPosInString = 0;
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//info.CurrPos = Center - Size / 2;
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info.CurrPos = position - CalcDistance(AnchorType.TopLeft, Anchor, Size);
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if (TurboBit)
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RenderTurboBit(info, true);
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RenderStart(info);
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while (info.CurrPosInString < Text.Length)
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{
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RenderNextChar(info);
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RenderGap(info, false);
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}
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RenderStop(info);
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if (TurboBit)
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RenderTurboBit(info, false);
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if (TextLocation != TextLocation.None)
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RenderText(info);
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gfx.Restore(state);
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}
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private void RenderNextChar(BarCodeRenderInfo info)
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{
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RenderChar(info, Text[info.CurrPosInString]);
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++info.CurrPosInString;
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}
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private void RenderChar(BarCodeRenderInfo info, char ch)
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{
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bool[] thickThinLines = ThickThinLines(ch);
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int idx = 0;
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while (idx < 9)
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{
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RenderBar(info, thickThinLines[idx]);
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if (idx < 8)
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RenderGap(info, thickThinLines[idx + 1]);
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idx += 2;
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}
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}
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private void RenderStart(BarCodeRenderInfo info)
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{
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RenderChar(info, '*');
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RenderGap(info, false);
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}
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private void RenderStop(BarCodeRenderInfo info)
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{
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RenderChar(info, '*');
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}
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}
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}
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