JW/广体终端机/Net版本/EmisTerminal/ImagePrintDocument.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Drawing.Printing;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;

namespace EmisTerminal
{
    public class ImagePrintDocument : PrintDocument
    {
        private int m_currentPage;
        private List<Image> m_pages = new List<Image>();

        public ImagePrintDocument(IList<Image> imageList)
        {
            m_pages = imageList.ToList();
        }

        protected override void Dispose(bool disposing)
        {
            base.Dispose(disposing);

            if (disposing)
            {
                foreach (Image s in m_pages)
                {
                    s.Dispose();
                }

                m_pages.Clear();
            }
        }

        protected override void OnBeginPrint(PrintEventArgs e)
        {
            base.OnBeginPrint(e);

            m_currentPage = 0;
        }

        protected override void OnPrintPage(PrintPageEventArgs e)
        {
            base.OnPrintPage(e);

            using (Image pageToPrint = m_pages[m_currentPage])
            {
                Rectangle adjustedRect = new Rectangle(
                        e.PageBounds.Left - (int)e.PageSettings.HardMarginX,
                        e.PageBounds.Top - (int)e.PageSettings.HardMarginY,
                        e.PageBounds.Width,
                        e.PageBounds.Height);

                // Draw a white background for the report
                e.Graphics.FillRectangle(Brushes.White, adjustedRect);

                // Draw the report content
                e.Graphics.DrawImage(pageToPrint, adjustedRect);

                // Prepare for next page.  Make sure we haven't hit the end.
                m_currentPage++;
                e.HasMorePages = m_currentPage < m_pages.Count;
            }
        }
    }
}