EoAssessmentPrinter.cs

using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using MyProject.Domain;
using EO.Pdf;
using EO.Pdf.Acm;

namespace MyProject.Services
{
    public class EoAssessmentPrinter
    {
        private bool isTwoColumn;
        private string title;
        private const string Space = "  ";

        public Stream CreateAssessmentPdf(AssessmentTestVersion assessment, bool isTwoColumn)
        {
            this.isTwoColumn = isTwoColumn;

            PdfDocument pdf = new PdfDocument();
            AcmPageLayout layout = GetLayout(isTwoColumn);
            AcmRender renderer = new AcmRender(pdf, layout);
            renderer.BeforeRenderPage += new AcmPageEventHandler(BeforeRenderPage);

            SetTitle(assessment.AssessmentName);

            foreach (AssessmentTestQuestion question in assessment.Questions.OrderBy(t => t.AssessmentSectionItem.OrderNumber))
            {
                AcmParagraph paragraph = AddQuestion(question);
                renderer.Render(paragraph);
            }
     
            pdf.Save("C:\\dev\\testcols" + (isTwoColumn ? 2 : 1) + ".pdf"); // just save the PDF for now
            return null;
        }

        private void SetTitle(string title)
        {
            this.title = title;
        }

        private AcmParagraph AddQuestion(Question question)
        {
            AcmParagraph paragraph = new AcmParagraph();
            int? questionNumber = ((AssessmentTestQuestion)question).AssessmentSectionItem.OrderNumber;
            AcmText questionText = new AcmText(questionNumber + "." + Space + question.ItemBody);
            paragraph.Children.Add(questionText);
            paragraph.Children.Add(new AcmLineBreak());

            for (int i = 0; i < question.QuestionResponses.Count; i++)
            {
                AssessmentItemResponse answer = question.QuestionResponses[i];
                AcmText answerText = AddAnswer(answer);
                answerText.Style.Margin.Left = 0.5f;
                paragraph.Children.Add(answerText);
                if (i < question.QuestionResponses.Count - 1)
                    paragraph.Children.Add(new AcmLineBreak());
            }

            return paragraph;
        }

        private AcmText AddAnswer(AssessmentItemResponse answer)
        {
            AcmText answerText = new AcmText(answer.Label + "." + Space + answer.Answer);
            return answerText;
        }

        private void BeforeRenderPage(object sender, AcmPageEventArgs e)
        {
            PdfPage page = e.Page;
            AcmRender renderer = new AcmRender(page, 0, new AcmPageLayout(new AcmPadding(1, 0, 1, 0)));

            if (null != title)
            {
                AcmBlock header = new AcmBlock(new AcmText(title));
                header.Style.Border.Bottom = new AcmLineInfo(AcmLineStyle.Solid, Color.Black, 0.01f);
                header.Style.Top = 0.1f;
                header.Style.HorizontalAlign = AcmHorizontalAlign.Center;
                renderer.Render(header);
            }

            AcmBlock footer = new AcmBlock(new AcmText(string.Format("{0}", page.Index)));
            footer.Style.Border.Top = new AcmLineInfo(AcmLineStyle.Solid, Color.Black, 0.01f);
            footer.Style.Top = 10.6f;
            footer.Style.HorizontalAlign = AcmHorizontalAlign.Right;
            renderer.Render(footer);
        }

        private static AcmPageLayout GetLayout(bool isTwoColumn)
        {
            return isTwoColumn 
                ? new AcmPageLayout(new AcmPadding(0.5f), new AcmColumn(0.5f, 3f), new AcmColumn(4.5f, 3f)) 
                : new AcmPageLayout(new AcmPadding(0.5f));
        }
    }
}