HYTOS

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Drawing.Imaging;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using DevExpress.Pdf;

namespace PDF_TO_IMAGE

{

    public partial class ConvertImage : Form

    {

        public ConvertImage()

        {

            InitializeComponent();

            Combo_Scale.SelectedIndex = Properties.Settings.Default._Scale;

            Combo_LengthType.SelectedIndex = Properties.Settings.Default._LengthType;

            Txt_Length.Text = Properties.Settings.Default._Length;

            Chk_Scale.Checked = Properties.Settings.Default._UseScale;

            SacleCheckedChange();

        }

        private void ConvertImage_FormClosing(object sender, FormClosingEventArgs e)

        {

            Properties.Settings.Default._Scale = Combo_Scale.SelectedIndex;

            Properties.Settings.Default._LengthType = Combo_LengthType.SelectedIndex;

            Properties.Settings.Default._Length = Txt_Length.Text;

            Properties.Settings.Default._UseScale = Chk_Scale.Checked;

            Properties.Settings.Default.Save();

        }

        private void Btn_LoadPDF_Click(object sender, EventArgs e)

        {

            FolderBrowserDialog dia = new FolderBrowserDialog();

            if (dia.ShowDialog() == DialogResult.OK)

            {

                Txt_PDFPath.Text = dia.SelectedPath;

            }

            return;

            OpenFileDialog OFD = new OpenFileDialog() { Filter = "PDF Files (.PDF)|*.PDF" };

            OFD.Multiselect = true;

            if (OFD.ShowDialog() == DialogResult.OK)

            {

                if (OFD.FileNames.Length > 1)

                {

                    if (MessageBox.Show("여러 파일을 하나로 합치고 진행하시겠습니까?", "Question", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)

                    {

                        SaveFileDialog saveFileDialog = new SaveFileDialog();

                        saveFileDialog.Filter = "PDF Files (.PDF)|*.PDF";

                        if (saveFileDialog.ShowDialog() == DialogResult.OK)

                        {

                            int iScale = 0;

                            double iLength = 0;

                            bool bResult = true;

                            if (Chk_Scale.Checked)

                                iScale = Convert.ToInt32(Combo_Scale.SelectedItem.ToString().Split(new char[] { ' ' })[1]);

                            else

                            {

                                if (!double.TryParse(Txt_Length.Text, out iLength) || iLength < 300)

                                    bResult = false;

                            }

                            if (bResult)

                            {

                                splashScreenManager1.ShowWaitForm();

                                splashScreenManager1.SetWaitFormCaption("Convert Pdf File to Image Files");

                                PdfDocumentProcessor pdp = new PdfDocumentProcessor();

                                pdp.CreateEmptyDocument();

                                foreach (var fileName in OFD.FileNames)

                                {

                                    PdfDocumentProcessor selectFile = new PdfDocumentProcessor();

                                    selectFile.LoadDocument(fileName);

                                    foreach (var page in selectFile.Document.Pages)

                                        pdp.Document.Pages.Add(page);

                                    selectFile.CloseDocument();

                                    selectFile.Dispose();

                                    selectFile = null;

                                }

                                pdp.SaveDocument(saveFileDialog.FileName);

                                string sPathNonExtension = saveFileDialog.FileName.Replace(Path.GetExtension(saveFileDialog.FileName), "");

                                try

                                {

                                    int iPage = pdp.Document.Pages.Count;

                                    string sPage = iPage.ToString();

                                    for (int i = 0; i < pdp.Document.Pages.Count; i++)

                                    {

                                        int iPercent = i * 100 / iPage;

                                        splashScreenManager1.SetWaitFormDescription(i + " / " + sPage + " Pages ( " + iPercent + "% )");

                                        PdfPage page = pdp.Document.Pages[i];

                                        double dWidth = page.CropBox.Width;

                                        double dHeight = page.CropBox.Height;

                                        if (Chk_Scale.Checked)

                                        {

                                            dWidth = dWidth * iScale;

                                            dHeight = dHeight * iScale;

                                        }

                                        else

                                        {

                                            if (Combo_LengthType.SelectedItem.ToString() == "Width")

                                            {

                                                double dScale = dWidth / iLength;

                                                dWidth = iLength;

                                                dHeight = dHeight / dScale;

                                            }

                                            else

                                            {

                                                double dScale = dHeight / iLength;

                                                dHeight = iLength;

                                                dWidth = dWidth / dScale;

                                            }

                                        }

                                        double dMax = Math.Max(dWidth, dHeight);

                                        using (Bitmap bitmap = pdp.CreateBitmap(i + 1, (int)dMax))

                                        {

                                            bitmap.Save(sPathNonExtension + "_Page" + (i + 1) + ".png");

                                        }

                                        iPercent = (i + 1) * 100 / iPage;

                                        splashScreenManager1.SetWaitFormDescription((i + 1) + " / " + sPage + " Pages ( " + iPercent + "% )");

                                    }

                                    MessageBox.Show("변환완료");

                                }

                                catch (Exception ex)

                                {

                                    MessageBox.Show("변환 이미지의 사이즈를 줄여주십시오");

                                }

                                pdp.CloseDocument();

                                splashScreenManager1.CloseWaitForm();

                            }

                            else

                            {

                                MessageBox.Show("PDF 경로와 Scale 또는 Width or Height를 확인해주세요");

                            }

                        }

                    }

                }

                else

                {

                    string pdfpath = OFD.FileName;

                    Txt_PDFPath.Text = pdfpath;

                }

            }

        }

        private void Chk_Scale_CheckedChanged(object sender, EventArgs e)

        {

            SacleCheckedChange();

        }

        private void SacleCheckedChange()

        {

            if (Chk_Scale.Checked)

            {

                Txt_Length.Enabled = false;

                Combo_LengthType.Enabled = false;

                Combo_Scale.Enabled = true;

            }

            else

            {

                Txt_Length.Enabled = true;

                Combo_LengthType.Enabled = true;

                Combo_Scale.Enabled = false;

            }

        }

        /// <summary>

        /// export selected all pdf files to image files

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void Btn_Convert_Click(object sender, EventArgs e)

        {

            int iScale = 0;

            double iLength = 0;

            bool bResult = true;

            string sFilePath = Txt_PDFPath.Text;

            if (Chk_Scale.Checked)

                iScale = Convert.ToInt32(Combo_Scale.SelectedItem.ToString().Split(new char[] { ' ' })[1]);

            else

            {

                if (!double.TryParse(Txt_Length.Text, out iLength) || iLength < 300)

                    bResult = false;

            }

            if (System.IO.Directory.Exists(sFilePath) && bResult)

            {

                DirectoryInfo directory = new DirectoryInfo(Txt_PDFPath.Text);

                if (directory.Exists)

                {

                    bool result = true;

                    foreach (var item in directory.GetFiles("*.pdf", SearchOption.TopDirectoryOnly))

                    {

                        string sPathWithoutExt = Path.Combine(Path.GetDirectoryName(item.FullName), Path.GetFileNameWithoutExtension(item.FullName));

                        using (PdfDocumentProcessor pdp = new PdfDocumentProcessor())

                        {

                            pdp.LoadDocument(item.FullName, true);

                            /// read all words from pdf file

                            Dictionary<int, List<PageWord>> PageWordMap = new Dictionary<int, List<PageWord>>();

                            PdfPageWord currentWord = pdp.NextWord();

                            while (currentWord != null)

                            {

                                PageWord word = new PageWord(currentWord);

                                if(!PageWordMap.ContainsKey(word.PageNumber))

                                {

                                    PageWordMap[word.PageNumber] = new List<PageWord>();

                                }

                                PageWordMap[word.PageNumber].Add(word);

                                //Switch to the next word

                                currentWord = pdp.NextWord();

                            }
                            /// up to here

                            splashScreenManager1.ShowWaitForm();

                            splashScreenManager1.SetWaitFormCaption("Convert Pdf File to Image Files");

                            try

                            {

                                int iPage = pdp.Document.Pages.Count;

                                string sPage = iPage.ToString();

                                for (int i = 0; i < pdp.Document.Pages.Count; i++)

                                {

                                    int iPercent = i * 100 / iPage;

                                    splashScreenManager1.SetWaitFormDescription(i + " / " + sPage + " Pages ( " + iPercent + "% )");

                                    PdfPage page = pdp.Document.Pages[i];

                                    double dWidth = page.CropBox.Width;

                                    double dHeight = page.CropBox.Height;

                                    System.Drawing.Drawing2D.Matrix mat = new System.Drawing.Drawing2D.Matrix();

                                    mat.Rotate(page.Rotate);

                                    if (page.Rotate == 90 || page.Rotate == 270)

                                    {

                                        double tempValue = dWidth;

                                        dWidth = dHeight;

                                        dHeight = tempValue;

                                    }

                                    double dScale = iScale;

                                    if (Chk_Scale.Checked)

                                    {

                                        dWidth = dWidth * iScale;

                                        dHeight = dHeight * iScale;

                                    }

                                    else

                                    {

                                        if (Combo_LengthType.SelectedItem.ToString() == "Width")

                                        {

                                            dScale = iLength / dWidth;

                                            dWidth = iLength;

                                            dHeight = dHeight * dScale;

                                        }

                                        else

                                        {

                                            dScale = iLength / dHeight;

                                            dHeight = iLength;

                                            dWidth = dWidth * dScale;

                                        }

                                    }

                                    double dMax = Math.Max(dWidth, dHeight);

                                    using (Bitmap bitmap = pdp.CreateBitmap(i + 1, (int)dMax))

                                    {

                                        if (pdp.Document.Pages.Count != 1)

                                            bitmap.Save(sPathWithoutExt + "_Page" + (i + 1) + ".png", System.Drawing.Imaging.ImageFormat.Png);

                                        else

                                            bitmap.Save(sPathWithoutExt + ".png", System.Drawing.Imaging.ImageFormat.Png);

                                    }

                                    /// save text to file

                                    System.Xml.XmlDocument xmlDoc = new System.Xml.XmlDocument();

                                    System.Xml.XmlNode xmlRoot = xmlDoc.CreateElement("Texts");

                                    foreach(PageWord word in PageWordMap[i + 1])

                                    {

                                        System.Xml.XmlNode xmlText = xmlDoc.CreateElement("Text");

                                        System.Xml.XmlAttribute pos = xmlDoc.CreateAttribute("Position");

                                        PointF[] array = { new PointF((float)(word.Left * dScale), (float)(word.Top * dScale)) };

                                        mat.TransformPoints(array);

                                        pos.Value = $"{System.Math.Abs(array[0].X)},{System.Math.Abs(array[0].Y)}";

                                        xmlText.Attributes.Append(pos);

                                        System.Xml.XmlAttribute angle = xmlDoc.CreateAttribute("Angle");

                                        double dAngle = (word.Angle - page.Rotate) >= 0 ? (word.Angle - page.Rotate) : 360 + (word.Angle - page.Rotate);

                                        angle.Value = $"{dAngle}";

                                        xmlText.Attributes.Append(angle);

                                        System.Xml.XmlAttribute xmlWidth = xmlDoc.CreateAttribute("Width");

                                        xmlWidth.Value = $"{word.Width * dScale}";

                                        xmlText.Attributes.Append(xmlWidth);

                                        System.Xml.XmlAttribute xmlHeight = xmlDoc.CreateAttribute("Height");

                                        xmlHeight.Value = $"{word.Height * dScale}";

                                        xmlText.Attributes.Append(xmlHeight);

                                        xmlText.InnerText = word.Text;

                                        xmlRoot.AppendChild(xmlText);

                                    }

                                    xmlDoc.AppendChild(xmlRoot);

                                    xmlDoc.Save($"{sPathWithoutExt}_Page{i + 1}.xml");

                                    /// up to here

                                    iPercent = (i + 1) * 100 / iPage;

                                    splashScreenManager1.SetWaitFormDescription((i + 1) + " / " + sPage + " Pages ( " + iPercent + "% )");

                                }

                            }

                            catch (Exception ex)

                            {

                                result = false;

                                MessageBox.Show("에러를 확인해 주세요: " + ex.Message, "에러", MessageBoxButtons.OK, MessageBoxIcon.Error);

                                break;

                            }

                            pdp.CloseDocument();

                            splashScreenManager1.CloseWaitForm();

                        }

                    }

                    if (result)

                        this.labelStatus.Text = "변환 완료";

                }

                else

                {

                    MessageBox.Show("PDF 경로와 Scale 또는 Width or Height를 확인해 주세요");

                }

            }

            else

            {

                MessageBox.Show("PDF 경로와 Scale 또는 Width or Height를 확인해 주세요");

            }

        }

    }

}