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PdfTextExtractor: Get results as PdfTextElementColumn, for debugging purposes.

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This commit is contained in:
Valeriano A.R.
2019-10-27 18:45:13 +01:00
parent 386b38bd21
commit 9af363529c
5 changed files with 166 additions and 55 deletions
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19
VAR.PdfTools.Workbench/FrmPdfInfo.Designer.cs generated
View File

@@ -48,6 +48,7 @@
this.txtField3 = new System.Windows.Forms.TextBox();
this.btnGetColumn3 = new System.Windows.Forms.Button();
this.txtPages = new System.Windows.Forms.TextBox();
this.chkRender = new System.Windows.Forms.CheckBox();
this.SuspendLayout();
//
// lblOutputs
@@ -120,7 +121,7 @@
//
this.btnGetColumn1.Location = new System.Drawing.Point(292, 51);
this.btnGetColumn1.Name = "btnGetColumn1";
this.btnGetColumn1.Size = new System.Drawing.Size(60, 23);
this.btnGetColumn1.Size = new System.Drawing.Size(69, 23);
this.btnGetColumn1.TabIndex = 12;
this.btnGetColumn1.Text = "GetColumn";
this.btnGetColumn1.UseVisualStyleBackColor = true;
@@ -195,7 +196,7 @@
//
this.btnGetColumn2.Location = new System.Drawing.Point(292, 80);
this.btnGetColumn2.Name = "btnGetColumn2";
this.btnGetColumn2.Size = new System.Drawing.Size(60, 23);
this.btnGetColumn2.Size = new System.Drawing.Size(69, 23);
this.btnGetColumn2.TabIndex = 19;
this.btnGetColumn2.Text = "GetColumn";
this.btnGetColumn2.UseVisualStyleBackColor = true;
@@ -232,7 +233,7 @@
//
this.btnGetColumn3.Location = new System.Drawing.Point(292, 109);
this.btnGetColumn3.Name = "btnGetColumn3";
this.btnGetColumn3.Size = new System.Drawing.Size(60, 23);
this.btnGetColumn3.Size = new System.Drawing.Size(69, 23);
this.btnGetColumn3.TabIndex = 23;
this.btnGetColumn3.Text = "GetColumn";
this.btnGetColumn3.UseVisualStyleBackColor = true;
@@ -246,11 +247,22 @@
this.txtPages.Size = new System.Drawing.Size(75, 20);
this.txtPages.TabIndex = 27;
//
// chkRender
//
this.chkRender.AutoSize = true;
this.chkRender.Location = new System.Drawing.Point(292, 138);
this.chkRender.Name = "chkRender";
this.chkRender.Size = new System.Drawing.Size(61, 17);
this.chkRender.TabIndex = 28;
this.chkRender.Text = "Render";
this.chkRender.UseVisualStyleBackColor = true;
//
// FrmPdfInfo
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(484, 461);
this.Controls.Add(this.chkRender);
this.Controls.Add(this.txtPages);
this.Controls.Add(this.btnHasText3);
this.Controls.Add(this.btnGetField3);
@@ -302,5 +314,6 @@
private System.Windows.Forms.TextBox txtField3;
private System.Windows.Forms.Button btnGetColumn3;
private System.Windows.Forms.TextBox txtPages;
private System.Windows.Forms.CheckBox chkRender;
}
}

37
VAR.PdfTools.Workbench/FrmPdfInfo.cs
View File

@@ -1,7 +1,6 @@
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
@@ -214,10 +213,11 @@ namespace VAR.PdfTools.Workbench
if (part.Contains("-"))
{
string[] range = part.Split('-');
if (range.Length == 2) {
if (range.Length == 2)
{
int pageStart;
int pageEnd;
if(int.TryParse(range[0], out pageStart) && int.TryParse(range[1], out pageEnd))
if (int.TryParse(range[0], out pageStart) && int.TryParse(range[1], out pageEnd))
{
listPages.AddRange(Enumerable.Range(pageStart, (pageEnd - pageStart) + 1));
}
@@ -226,13 +226,13 @@ namespace VAR.PdfTools.Workbench
else
{
int pageNum;
if(int.TryParse(part, out pageNum))
if (int.TryParse(part, out pageNum))
{
listPages.Add(pageNum);
}
}
}
if(listPages.Count == 0)
if (listPages.Count == 0)
{
listPages.AddRange(Enumerable.Range(1, maxPages));
}
@@ -294,18 +294,29 @@ namespace VAR.PdfTools.Workbench
}
PdfDocument doc = PdfDocument.Load(pdfPath);
string baseDocumentPath = Path.GetDirectoryName(txtPdfPath.Text);
string baseDocumentFilename = Path.GetFileNameWithoutExtension(txtPdfPath.Text);
IEnumerable<int> selectedPages = GetSelectedPages(doc.Pages.Count);
var columnData = new List<string>();
var columns = new List<string>();
int pageNum = 0;
foreach (PdfDocumentPage page in doc.Pages)
{
pageNum++;
if (selectedPages.Contains(pageNum) == false) { continue; }
PdfTextExtractor extractor = new PdfTextExtractor(page);
columnData.AddRange(extractor.GetColumnAsStrings(column));
PdfTextElementColumn columnData = extractor.GetColumn(column);
if (chkRender.Checked)
{
var pdfPageRenderer = new PdfPageRenderer(extractor);
Bitmap bmp = pdfPageRenderer.Render();
pdfPageRenderer.RenderColumn(columnData, bmp);
string fileName = Path.Combine(baseDocumentPath, string.Format("{0}_{1:0000}.png", baseDocumentFilename, pageNum));
bmp.Save(fileName, ImageFormat.Png);
}
columns.AddRange(columnData.Elements.Select(t => t.VisibleText));
}
txtOutput.Lines = columnData.ToArray();
txtOutput.Lines = columns.ToArray();
}
private void btnRender_Click(object sender, EventArgs e)
@@ -325,19 +336,19 @@ namespace VAR.PdfTools.Workbench
lines.Add(string.Format("Number of Pages : {0}", doc.Pages.Count));
IEnumerable<int> selectedPages = GetSelectedPages(doc.Pages.Count);
int pageNumber = 0;
int pageNum = 0;
foreach (PdfDocumentPage page in doc.Pages)
{
pageNumber++;
if (selectedPages.Contains(pageNumber) == false) { continue; }
pageNum++;
if (selectedPages.Contains(pageNum) == false) { continue; }
PdfPageRenderer pdfPageRenderer = new PdfPageRenderer(page);
Bitmap bmp = pdfPageRenderer.Render();
lines.Add(string.Format("Page {0:0000} TextElements : {1}", pageNumber, pdfPageRenderer.Extractor.Elements.Count));
lines.Add(string.Format("Page {0:0000} TextElements : {1}", pageNum, pdfPageRenderer.Extractor.Elements.Count));
// Save image to disk
string fileName = Path.Combine(baseDocumentPath, string.Format("{0}_{1:0000}.png", baseDocumentFilename, pageNumber));
string fileName = Path.Combine(baseDocumentPath, string.Format("{0}_{1:0000}.png", baseDocumentFilename, pageNum));
bmp.Save(fileName, ImageFormat.Png);
}