/*******************************************************************************
 * Copyright(c) 2014 dongke All rights reserved. / Confidential
 * 类的信息：
 *      1.程序名称：BarcodeUtility.cs
 *      2.功能描述：条码打印与条码图片解析
 * 编辑履历：
 *      作者            日期                版本            修改内容
 *      陈冰            2014/10/27          1.00            新建
 *******************************************************************************/

using System;
using System.Collections.Generic;
using System.Drawing;

using ZXing;
using ZXing.Common;
using ZXing.Rendering;

namespace Dongke.IBOSS.PRD.Basics.Library
{
    /// <summary>
    /// 条码打印与条码图片解析
    /// </summary>
    public class BarcodePrintUtility
    {
        /// <summary>
        /// 纸张类型
        /// </summary>
        public enum PaperType
        {
            /// <summary>
            /// A4纸张
            /// </summary>
            A4,
        }

        // 采用code128编码方式
        private static BarcodeFormat _barcodeFormat = BarcodeFormat.CODE_128;

        /// <summary>
        /// 条码转换成图片类
        /// </summary>
        /// <param name="barcode">条码</param>
        /// <param name="barcodeHeight">高</param>
        /// <param name="barcodeWidth">宽</param>
        /// <returns></returns>
        public static Image BarcodeConvertImage(string barcode, int barcodeWidth, int barcodeHeight)
        {
            BarcodeWriter barcodeWriter = new BarcodeWriter();
            barcodeWriter.Format = _barcodeFormat;
            BarcodeWriterGeneric<Bitmap> arg_50_0 = barcodeWriter;

            arg_50_0.Options = new EncodingOptions
            {
                Height = barcodeHeight,
                Width = barcodeWidth
            };

            barcodeWriter.Renderer = new BitmapRenderer();

            return barcodeWriter.Write(barcode);
        }

        /// <summary>
        /// 画出A4纸张集合
        /// </summary>
        /// <param name="barcodeList"></param>
        /// <param name="barcodeWidth"></param>
        /// <param name="barcodeHeight"></param>
        /// <param name="paperType"></param>
        /// <returns></returns>
        public static List<Image> BarcodeDrawPaper(List<string> barcodeList, int barcodeWidth, int barcodeHeight, BarcodePrintUtility.PaperType paperType)
        {
            // 纸张的大小
            int paperWidth = 0;
            int paperHeight = 0;

            // 位置让画出的条码上下高度适中 增加10像素。便于观看纸张
            int addHeight = 10;

            if (paperType == BarcodePrintUtility.PaperType.A4)
            {
                paperWidth = 595;
                paperHeight = 842;
            }

            // 条码摆放纸张的列数
            int colCount = paperWidth / barcodeWidth;
            // 条码摆放纸张的行数
            int rowCount = paperHeight / (barcodeHeight + addHeight);

            List<Image> imgList = new List<Image>();

            // 纸张
            Bitmap newBmp = null;
            Graphics g = null;

            for (int i = 0; i < barcodeList.Count; i++)
            {
                // 构建新纸张
                if (i % (colCount * rowCount) == 0)
                {
                    newBmp = new Bitmap(paperWidth, paperHeight);
                    g = Graphics.FromImage(newBmp);
                    // 清空画布，并以白色背景填充
                    g.Clear(System.Drawing.Color.White);
                    imgList.Add(newBmp);
                }

                // 条码图片
                Image img = BarcodePrintUtility.BarcodeConvertImage(barcodeList[i], barcodeWidth, barcodeHeight);

                // 设置条码构建的位置
                int x = i % (colCount * rowCount) % colCount * barcodeWidth;
                int y = i % (colCount * rowCount) / colCount * (barcodeHeight + addHeight);// 加像素表示 上下有点间距
                g.DrawImage(img, x, y);
            }

            return imgList;
        }
    }
}