public static void ConvertPDF2Image(string pdfInputPath, string imageOutputPath, string imageName, int startPageNum, int endPageNum, ImageFormat imageFormat, Definition definition)
{
PDFWrapper pdfWrapper = new PDFWrapper();
pdfWrapper.LoadPDF(pdfInputPath);
if (!System.IO.Directory.Exists(imageOutputPath))
{
Directory.CreateDirectory(imageOutputPath);
}
// validate pageNum
if (startPageNum <= 0)
{
startPageNum = 1;
}
if (endPageNum > pdfWrapper.PageCount)
{
endPageNum = pdfWrapper.PageCount;
}
if (startPageNum > endPageNum)
{
int tempPageNum = startPageNum;
startPageNum = endPageNum;
endPageNum = startPageNum;
}
// start to convert each page
for (int i = startPageNum; i <= endPageNum; i++)
{
pdfWrapper.ExportJpg(imageOutputPath + imageName, i, i, 300, 90);//这里可以设置输出图片的页数、大小和图片质量从默认的150--》300
while (pdfWrapper.IsJpgBusy == true)
{
System.Threading.Thread.Sleep(500);
}
}
pdfWrapper.Dispose();
}
public static void ConvertPDFtoJPG(string name)
{
using (var fs = new FileStream(name, FileMode.OpenOrCreate))
{
var _pdfDoc = new PDFWrapper();
_pdfDoc.LoadPDF(fs);
for (int i = 0; i < _pdfDoc.PageCount; i++)
{
var fileName = Path.Combine(Path.GetDirectoryName(name).Replace(@"D:\temp\New folder\", ""), $"{Path.GetFileNameWithoutExtension(name)}-page-{i + 1}.jpg");
Image img = RenderPage(_pdfDoc, i);
var tn = img.GetThumbnailImage(150, 200, () => { return(true); }, IntPtr.Zero);
using (var ms = new MemoryStream())
{
tn.Save(ms, ImageFormat.Jpeg);
ms.Seek(0, SeekOrigin.Begin);
SCS(ms, fileName, i);
}
Console.WriteLine($"saved: {fileName}");
}
Console.WriteLine(name);
_pdfDoc.Dispose();
}
}
public bool UnloadPdf()
{
if (mypdfDoc != null)
{
//MessageBox.Show("UnloadPDF");
mypdfDoc.Dispose();
mypdfDoc = null;
return(true);
}
return(false);
}
protected override void Dispose(bool disposing)
{
if (!_disposed && disposing)
{
if (_document != null)
{
_document.Dispose();
_document = null;
}
if (_dummyControl != null)
{
_dummyControl.Dispose();
_dummyControl = null;
}
_disposed = true;
}
}
/// <summary>
/// pdf分页转图片
/// </summary>
/// <param name="attachmentId">附件id</param>
/// <param name="sourcePath">文件原始路劲</param>
/// <param name="fileInputPath">文件路劲（临时文件路劲）</param>
/// <param name="fileSavePath">文件要保存的路劲</param>
/// <param name="imageFormat">图片格式</param>
/// <param name="DPI">图片分辨率（数值越大质量越高）</param>
/// <param name="definition">清晰度（数值越大质量越高）</param>
/// <returns></returns>
public bool PdfToImg(int attachmentId, string sourcePath, string fileInputPath, string fileSavePath, ImageFormat imageFormat, int DPI, int definition)
{
try
{
List <int> list = new List <int>();
PDFWrapper wrapper = new PDFWrapper();
wrapper.LoadPDF(fileInputPath);
if (!Directory.Exists(fileSavePath))
{
Directory.CreateDirectory(fileSavePath);
}
var pageCount = wrapper.PageCount;
StringBuilder sb = new StringBuilder();
if (pageCount > 0)
{
sb.Append(string.Format("delete from PreviewFile where AttachmentId={0};", attachmentId));
for (int num = 1; num <= pageCount; num++)
{
string filename = fileSavePath + "\\" + num.ToString() + "." + imageFormat.ToString();
if (File.Exists(filename))
{
File.Delete(filename);
}
wrapper.ExportJpg(filename, num, num, (double)DPI, definition);
sb.Append(string.Format("insert into PreviewFile(AttachmentId,SavePath,CreateTime)values({0},'{1}','{2}');", attachmentId, fileSavePath.Replace(sourcePath, "").Replace("\\", "/"), DateTime.Now));
Thread.Sleep(1000);
}
wrapper.Dispose();
var result = SqlHelper.ExecteNonQueryText(sb.ToString(), null);
return(result > 0);
}
else
{
return(true);
}
}
catch (Exception exception)
{
throw exception;
}
}
/// <summary>
/// 将PDF文档转换为图片的方法
/// </summary>
/// <param name="pdfInputPath">PDF文件路径</param>
/// <param name="imageOutputPath">图片输出路径</param>
/// <param name="imageName">生成图片的名字</param>
/// <param name="startPageNum">从PDF文档的第几页开始转换</param>
/// <param name="endPageNum">从PDF文档的第几页开始停止转换</param>
/// <param name="imageFormat">设置所需图片格式</param>
/// <param name="definition">设置图片的清晰度，数字越大越清晰</param>
public static void ConvertPDF2Image(string pdfInputPath, string imageOutputPath,
string imageName, int startPageNum, int endPageNum, ImageFormat imageFormat, Definition definition)
{
PDFWrapper pdfWrapper = new PDFWrapper();
pdfWrapper.LoadPDF(pdfInputPath);
if (!System.IO.Directory.Exists(imageOutputPath))
{
Directory.CreateDirectory(imageOutputPath);
}
// validate pageNum
if (startPageNum <= 0)
{
startPageNum = 1;
}
if (endPageNum > pdfWrapper.PageCount)
{
endPageNum = pdfWrapper.PageCount;
}
if (startPageNum > endPageNum)
{
int tempPageNum = startPageNum;
startPageNum = endPageNum;
endPageNum = startPageNum;
}
// start to convert each page
for (int i = startPageNum; i <= endPageNum; i++)
{
pdfWrapper.ExportJpg(imageOutputPath + imageName + i.ToString() + ".jpg", i, i, 150, 90);//这里可以设置输出图片的页数、大小和图片质量
if (pdfWrapper.IsJpgBusy) { System.Threading.Thread.Sleep(50); }
}
pdfWrapper.Dispose();
}
/// <summary>
/// 调用PDFLibNet生成图片(如果pdf文件有特殊字体，无法转化)
/// </summary>
private static void GetImgFromPDFLibNet()
{
string pdfInputPath = AppDomain.CurrentDomain.BaseDirectory + "test.pdf";
string imageOutputPath = AppDomain.CurrentDomain.BaseDirectory + @"\Pdf2Img\";
ImageFormat imageFormat = ImageFormat.Png;
int DPI = 200; int definition = 30;
try
{
List <int> list = new List <int>();
PDFWrapper wrapper = new PDFWrapper();
wrapper.LoadPDF(pdfInputPath);
if (!Directory.Exists(imageOutputPath))
{
Directory.CreateDirectory(imageOutputPath);
}
if (list.Count == 0)
{
for (int i = 1; i <= wrapper.PageCount; i++)
{
list.Add(i);
}
}
foreach (int num in list)
{
string filename = imageOutputPath + num.ToString() + "." + imageFormat.ToString();
wrapper.ExportJpg(filename, num, num, (double)DPI, definition);
Thread.Sleep(1000);
Console.WriteLine("生成图片" + filename);
}
wrapper.Dispose();
}
catch (Exception exception)
{
Console.WriteLine("异常" + exception.ToString());
}
}
/// <summary>
/// Form initialization
/// </summary>
/// <param name="fileName">fileName</param>
private void FormInitial(string fileName)
{
rmsUserpEncrypt = true;
if (outPutStream != null)
{
outPutStream.Close();
outPutStream.Dispose();
}
if (!tempFile.Equals(string.Empty))
{
if (File.Exists(tempFile + ".tmp"))
{
WipeFile(tempFile + ".tmp", 1);
}
tempFile = string.Empty;
}
if (pdfDoc != null)
{
pdfDoc.Dispose();
pdfDoc = null;
}
pdfDoc = new PDFWrapper();
if (!LoadFileByStream(fileName))
{
return;
}
//set zoomRate
if (zoomRate.Count == 0)
{
zoomRate.Add(-3, 0.25);
zoomRate.Add(-2, 0.5);
zoomRate.Add(-1, 0.75);
zoomRate.Add(0, 1);
zoomRate.Add(1, 1.25);
zoomRate.Add(2, 1.5);
zoomRate.Add(3, 2);
zoomRate.Add(4, 4);
}
foreach (string item in ddlZoom.Items)
{
if (item.Equals((zoomRate[currentZoom] * 100).ToString() + "%"))
{
ddlZoom.SelectedIndex = currentZoom - (-3);
}
}
currentPage = pdfDoc.CurrentPage;
pageCount = pdfDoc.PageCount;
tslblPageAll.Text = "/" + pageCount.ToString();
tstbPageIndex.Text = currentPage.ToString();
SetPictureBoxImage();
this.WindowState = FormWindowState.Maximized;
this.pnlForm.Focus();
}
private void tsbOpen_Click(object sender, EventArgs e)
{
try
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "Portable Document Format (*.pdf)|*.pdf";
if (dlg.ShowDialog() == DialogResult.OK)
{
if (_pdfDoc != null)
{
_pdfDoc.Dispose();
_pdfDoc = null;
}
//if (_pdfDoc == null)
//{
_pdfDoc = new PDFWrapper();
_pdfDoc.RenderNotifyFinished += new RenderNotifyFinishedHandler(_pdfDoc_RenderNotifyFinished);
_pdfDoc.PDFLoadCompeted += new PDFLoadCompletedHandler(_pdfDoc_PDFLoadCompeted);
_pdfDoc.PDFLoadBegin += new PDFLoadBeginHandler(_pdfDoc_PDFLoadBegin);
//}
//xPDFParams.ErrorQuiet =true;
//xPDFParams.ErrorFile = "C:\\stderr.log";
//}
int ts = Environment.TickCount;
using (StatusBusy sb = new StatusBusy(Resources.UIStrings.StatusLoadingFile))
{
if (LoadFile(dlg.FileName, _pdfDoc))
{
Text = string.Format(Resources.UIStrings.StatusFormCaption, _pdfDoc.Author, _pdfDoc.Title);
FillTree();
_pdfDoc.CurrentPage = 1;
UpdateText();
_pdfDoc.FitToWidth(pageViewControl1.Handle);
_pdfDoc.RenderPage(pageViewControl1.Handle);
Render();
PDFPage pg = _pdfDoc.Pages[1];
listView2.TileSize = new Size(134, (int)(128 * pg.Height / pg.Width) + 10);
listView2.BeginUpdate();
listView2.Clear();
for (int i = 0; i < _pdfDoc.PageCount; ++i)
{
listView2.Items.Add((i + 1).ToString());
}
listView2.EndUpdate();
//pg.LoadThumbnail(128, (int)(128 * pg.Height / pg.Width));
}
}
}
}
catch (System.IO.IOException ex)
{
MessageBox.Show(ex.Message, "IOException");
}
catch (System.Security.SecurityException ex)
{
MessageBox.Show(ex.Message, "SecurityException");
}
catch (System.IO.InvalidDataException ex)
{
MessageBox.Show(ex.Message, "InvalidDataException");
}
}
