itext pdfimage library
This commit is contained in:
Marco Giuntoni
+7
-400
@@ -1,400 +1,7 @@
|
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# ---> VisualStudio
|
||||
## Ignore Visual Studio temporary files, build results, and
|
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## files generated by popular Visual Studio add-ons.
|
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##
|
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## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
|
||||
|
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# User-specific files
|
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*.rsuser
|
||||
*.suo
|
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*.user
|
||||
*.userosscache
|
||||
*.sln.docstates
|
||||
|
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# User-specific files (MonoDevelop/Xamarin Studio)
|
||||
*.userprefs
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|
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# Mono auto generated files
|
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mono_crash.*
|
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|
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# Build results
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[Dd]ebug/
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[Dd]ebugPublic/
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[Rr]elease/
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[Rr]eleases/
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[Ww][Ii][Nn]32/
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[Aa][Rr][Mm]/
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[Aa][Rr][Mm]64/
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bld/
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[Bb]in/
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[Oo]bj/
|
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[Ll]og/
|
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[Ll]ogs/
|
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|
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# Visual Studio 2015/2017 cache/options directory
|
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.vs/
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# Uncomment if you have tasks that create the project's static files in wwwroot
|
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#wwwroot/
|
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|
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# Visual Studio 2017 auto generated files
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Generated\ Files/
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|
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# MSTest test Results
|
||||
[Tt]est[Rr]esult*/
|
||||
[Bb]uild[Ll]og.*
|
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|
||||
# NUnit
|
||||
*.VisualState.xml
|
||||
TestResult.xml
|
||||
nunit-*.xml
|
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|
||||
# Build Results of an ATL Project
|
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[Dd]ebugPS/
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[Rr]eleasePS/
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dlldata.c
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# Benchmark Results
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BenchmarkDotNet.Artifacts/
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# .NET Core
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project.lock.json
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project.fragment.lock.json
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artifacts/
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|
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# ASP.NET Scaffolding
|
||||
ScaffoldingReadMe.txt
|
||||
|
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# StyleCop
|
||||
StyleCopReport.xml
|
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|
||||
# Files built by Visual Studio
|
||||
*_i.c
|
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*_p.c
|
||||
*_h.h
|
||||
*.ilk
|
||||
*.meta
|
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*.obj
|
||||
*.iobj
|
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*.pch
|
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*.pdb
|
||||
*.ipdb
|
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*.pgc
|
||||
*.pgd
|
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*.rsp
|
||||
*.sbr
|
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*.tlb
|
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*.tli
|
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*.tlh
|
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*.tmp
|
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*.tmp_proj
|
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*_wpftmp.csproj
|
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*.log
|
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*.tlog
|
||||
*.vspscc
|
||||
*.vssscc
|
||||
.builds
|
||||
*.pidb
|
||||
*.svclog
|
||||
*.scc
|
||||
|
||||
# Chutzpah Test files
|
||||
_Chutzpah*
|
||||
|
||||
# Visual C++ cache files
|
||||
ipch/
|
||||
*.aps
|
||||
*.ncb
|
||||
*.opendb
|
||||
*.opensdf
|
||||
*.sdf
|
||||
*.cachefile
|
||||
*.VC.db
|
||||
*.VC.VC.opendb
|
||||
|
||||
# Visual Studio profiler
|
||||
*.psess
|
||||
*.vsp
|
||||
*.vspx
|
||||
*.sap
|
||||
|
||||
# Visual Studio Trace Files
|
||||
*.e2e
|
||||
|
||||
# TFS 2012 Local Workspace
|
||||
$tf/
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||||
|
||||
# Guidance Automation Toolkit
|
||||
*.gpState
|
||||
|
||||
# ReSharper is a .NET coding add-in
|
||||
_ReSharper*/
|
||||
*.[Rr]e[Ss]harper
|
||||
*.DotSettings.user
|
||||
|
||||
# TeamCity is a build add-in
|
||||
_TeamCity*
|
||||
|
||||
# DotCover is a Code Coverage Tool
|
||||
*.dotCover
|
||||
|
||||
# AxoCover is a Code Coverage Tool
|
||||
.axoCover/*
|
||||
!.axoCover/settings.json
|
||||
|
||||
# Coverlet is a free, cross platform Code Coverage Tool
|
||||
coverage*.json
|
||||
coverage*.xml
|
||||
coverage*.info
|
||||
|
||||
# Visual Studio code coverage results
|
||||
*.coverage
|
||||
*.coveragexml
|
||||
|
||||
# NCrunch
|
||||
_NCrunch_*
|
||||
.*crunch*.local.xml
|
||||
nCrunchTemp_*
|
||||
|
||||
# MightyMoose
|
||||
*.mm.*
|
||||
AutoTest.Net/
|
||||
|
||||
# Web workbench (sass)
|
||||
.sass-cache/
|
||||
|
||||
# Installshield output folder
|
||||
[Ee]xpress/
|
||||
|
||||
# DocProject is a documentation generator add-in
|
||||
DocProject/buildhelp/
|
||||
DocProject/Help/*.HxT
|
||||
DocProject/Help/*.HxC
|
||||
DocProject/Help/*.hhc
|
||||
DocProject/Help/*.hhk
|
||||
DocProject/Help/*.hhp
|
||||
DocProject/Help/Html2
|
||||
DocProject/Help/html
|
||||
|
||||
# Click-Once directory
|
||||
publish/
|
||||
|
||||
# Publish Web Output
|
||||
*.[Pp]ublish.xml
|
||||
*.azurePubxml
|
||||
# Note: Comment the next line if you want to checkin your web deploy settings,
|
||||
# but database connection strings (with potential passwords) will be unencrypted
|
||||
*.pubxml
|
||||
*.publishproj
|
||||
|
||||
# Microsoft Azure Web App publish settings. Comment the next line if you want to
|
||||
# checkin your Azure Web App publish settings, but sensitive information contained
|
||||
# in these scripts will be unencrypted
|
||||
PublishScripts/
|
||||
|
||||
# NuGet Packages
|
||||
*.nupkg
|
||||
# NuGet Symbol Packages
|
||||
*.snupkg
|
||||
# The packages folder can be ignored because of Package Restore
|
||||
**/[Pp]ackages/*
|
||||
# except build/, which is used as an MSBuild target.
|
||||
!**/[Pp]ackages/build/
|
||||
# Uncomment if necessary however generally it will be regenerated when needed
|
||||
#!**/[Pp]ackages/repositories.config
|
||||
# NuGet v3's project.json files produces more ignorable files
|
||||
*.nuget.props
|
||||
*.nuget.targets
|
||||
|
||||
# Microsoft Azure Build Output
|
||||
csx/
|
||||
*.build.csdef
|
||||
|
||||
# Microsoft Azure Emulator
|
||||
ecf/
|
||||
rcf/
|
||||
|
||||
# Windows Store app package directories and files
|
||||
AppPackages/
|
||||
BundleArtifacts/
|
||||
Package.StoreAssociation.xml
|
||||
_pkginfo.txt
|
||||
*.appx
|
||||
*.appxbundle
|
||||
*.appxupload
|
||||
|
||||
# Visual Studio cache files
|
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# files ending in .cache can be ignored
|
||||
*.[Cc]ache
|
||||
# but keep track of directories ending in .cache
|
||||
!?*.[Cc]ache/
|
||||
|
||||
# Others
|
||||
ClientBin/
|
||||
~$*
|
||||
*~
|
||||
*.dbmdl
|
||||
*.dbproj.schemaview
|
||||
*.jfm
|
||||
*.pfx
|
||||
*.publishsettings
|
||||
orleans.codegen.cs
|
||||
|
||||
# Including strong name files can present a security risk
|
||||
# (https://github.com/github/gitignore/pull/2483#issue-259490424)
|
||||
#*.snk
|
||||
|
||||
# Since there are multiple workflows, uncomment next line to ignore bower_components
|
||||
# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
|
||||
#bower_components/
|
||||
|
||||
# RIA/Silverlight projects
|
||||
Generated_Code/
|
||||
|
||||
# Backup & report files from converting an old project file
|
||||
# to a newer Visual Studio version. Backup files are not needed,
|
||||
# because we have git ;-)
|
||||
_UpgradeReport_Files/
|
||||
Backup*/
|
||||
UpgradeLog*.XML
|
||||
UpgradeLog*.htm
|
||||
ServiceFabricBackup/
|
||||
*.rptproj.bak
|
||||
|
||||
# SQL Server files
|
||||
*.mdf
|
||||
*.ldf
|
||||
*.ndf
|
||||
|
||||
# Business Intelligence projects
|
||||
*.rdl.data
|
||||
*.bim.layout
|
||||
*.bim_*.settings
|
||||
*.rptproj.rsuser
|
||||
*- [Bb]ackup.rdl
|
||||
*- [Bb]ackup ([0-9]).rdl
|
||||
*- [Bb]ackup ([0-9][0-9]).rdl
|
||||
|
||||
# Microsoft Fakes
|
||||
FakesAssemblies/
|
||||
|
||||
# GhostDoc plugin setting file
|
||||
*.GhostDoc.xml
|
||||
|
||||
# Node.js Tools for Visual Studio
|
||||
.ntvs_analysis.dat
|
||||
node_modules/
|
||||
|
||||
# Visual Studio 6 build log
|
||||
*.plg
|
||||
|
||||
# Visual Studio 6 workspace options file
|
||||
*.opt
|
||||
|
||||
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
|
||||
*.vbw
|
||||
|
||||
# Visual Studio 6 auto-generated project file (contains which files were open etc.)
|
||||
*.vbp
|
||||
|
||||
# Visual Studio 6 workspace and project file (working project files containing files to include in project)
|
||||
*.dsw
|
||||
*.dsp
|
||||
|
||||
# Visual Studio 6 technical files
|
||||
*.ncb
|
||||
*.aps
|
||||
|
||||
# Visual Studio LightSwitch build output
|
||||
**/*.HTMLClient/GeneratedArtifacts
|
||||
**/*.DesktopClient/GeneratedArtifacts
|
||||
**/*.DesktopClient/ModelManifest.xml
|
||||
**/*.Server/GeneratedArtifacts
|
||||
**/*.Server/ModelManifest.xml
|
||||
_Pvt_Extensions
|
||||
|
||||
# Paket dependency manager
|
||||
.paket/paket.exe
|
||||
paket-files/
|
||||
|
||||
# FAKE - F# Make
|
||||
.fake/
|
||||
|
||||
# CodeRush personal settings
|
||||
.cr/personal
|
||||
|
||||
# Python Tools for Visual Studio (PTVS)
|
||||
__pycache__/
|
||||
*.pyc
|
||||
|
||||
# Cake - Uncomment if you are using it
|
||||
# tools/**
|
||||
# !tools/packages.config
|
||||
|
||||
# Tabs Studio
|
||||
*.tss
|
||||
|
||||
# Telerik's JustMock configuration file
|
||||
*.jmconfig
|
||||
|
||||
# BizTalk build output
|
||||
*.btp.cs
|
||||
*.btm.cs
|
||||
*.odx.cs
|
||||
*.xsd.cs
|
||||
|
||||
# OpenCover UI analysis results
|
||||
OpenCover/
|
||||
|
||||
# Azure Stream Analytics local run output
|
||||
ASALocalRun/
|
||||
|
||||
# MSBuild Binary and Structured Log
|
||||
*.binlog
|
||||
|
||||
# NVidia Nsight GPU debugger configuration file
|
||||
*.nvuser
|
||||
|
||||
# MFractors (Xamarin productivity tool) working folder
|
||||
.mfractor/
|
||||
|
||||
# Local History for Visual Studio
|
||||
.localhistory/
|
||||
|
||||
# Visual Studio History (VSHistory) files
|
||||
.vshistory/
|
||||
|
||||
# BeatPulse healthcheck temp database
|
||||
healthchecksdb
|
||||
|
||||
# Backup folder for Package Reference Convert tool in Visual Studio 2017
|
||||
MigrationBackup/
|
||||
|
||||
# Ionide (cross platform F# VS Code tools) working folder
|
||||
.ionide/
|
||||
|
||||
# Fody - auto-generated XML schema
|
||||
FodyWeavers.xsd
|
||||
|
||||
# VS Code files for those working on multiple tools
|
||||
.vscode/*
|
||||
!.vscode/settings.json
|
||||
!.vscode/tasks.json
|
||||
!.vscode/launch.json
|
||||
!.vscode/extensions.json
|
||||
*.code-workspace
|
||||
|
||||
# Local History for Visual Studio Code
|
||||
.history/
|
||||
|
||||
# Windows Installer files from build outputs
|
||||
*.cab
|
||||
*.msi
|
||||
*.msix
|
||||
*.msm
|
||||
*.msp
|
||||
|
||||
# JetBrains Rider
|
||||
*.sln.iml
|
||||
|
||||
lib/*
|
||||
!.gitkeep
|
||||
bin/*
|
||||
obj/*
|
||||
*.dll
|
||||
/.vs
|
||||
/TOOLS
|
||||
|
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@@ -0,0 +1,60 @@
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using iText.Kernel.Pdf;
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using iText.Kernel.Pdf.Canvas.Parser;
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using iText.Kernel.Pdf.Canvas.Parser.Listener;
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using System;
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using System.Collections.Generic;
|
||||
using System.IO;
|
||||
using iText.IO.Font;
|
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using System.Text.RegularExpressions;
|
||||
|
||||
using System.Drawing;
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using System.Drawing.Drawing2D;
|
||||
using System.Drawing.Imaging;
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||||
using System.Drawing.Text;
|
||||
|
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namespace itext.pdfimage.Extensions
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{
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public static class ConvertExtensions
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{
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public static IEnumerable<Bitmap> ConvertToBitmaps(this PdfDocument pdfDocument)
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{
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var converter = new PdfToImageConverter();
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return converter.ConvertToBitmaps(pdfDocument);
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||||
}
|
||||
|
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public static Bitmap ConvertPageToBitmap(this PdfPage pdfPage)
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{
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var converter = new PdfToImageConverter();
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return converter.ConvertToBitmap(pdfPage);
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}
|
||||
|
||||
public static IEnumerable<Stream> ConvertToJpgStreams(this PdfDocument pdfDocument)
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{
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var converter = new PdfToImageConverter();
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return converter.ConvertToJpgStreams(pdfDocument);
|
||||
}
|
||||
|
||||
public static Stream ConvertPageToJpg(this PdfPage pdfPage)
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{
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var converter = new PdfToImageConverter();
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return converter.ConvertToJpgStream(pdfPage);
|
||||
}
|
||||
|
||||
internal static FontStyle GetFontStyle(this FontNames fontNames)
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||||
{
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||||
var fontname = fontNames.GetFontName();
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||||
var fontStyleRegex = Regex.Match(fontname, @"[-,][\w\s]+$");
|
||||
|
||||
if (fontStyleRegex.Success)
|
||||
{
|
||||
var result = fontStyleRegex.Value.ToLower();
|
||||
if (result.Contains("bold"))
|
||||
{
|
||||
return FontStyle.Bold;
|
||||
}
|
||||
}
|
||||
|
||||
return FontStyle.Regular;
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,12 @@
|
||||
using System;
|
||||
using System.Collections.Generic;
|
||||
using System.Linq;
|
||||
using System.Text;
|
||||
using System.Threading.Tasks;
|
||||
|
||||
namespace itext.pdfimage.Models
|
||||
{
|
||||
public interface IChunk
|
||||
{
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,13 @@
|
||||
using System.Drawing;
|
||||
|
||||
namespace itext.pdfimage.Models
|
||||
{
|
||||
public class ImageChunk : IChunk
|
||||
{
|
||||
public float X { get; set; }
|
||||
public float Y { get; set; }
|
||||
public float W { get; set; }
|
||||
public float H { get; set; }
|
||||
public Image Image { get; set; }
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,108 @@
|
||||
using iText.Kernel.Pdf.Canvas.Parser.Data;
|
||||
using itext.pdfimage.Models;
|
||||
using System.Collections.Generic;
|
||||
using System.IO;
|
||||
using System;
|
||||
using System.Drawing;
|
||||
using iText.Kernel.Pdf.Xobject;
|
||||
using System.Drawing.Imaging;
|
||||
|
||||
namespace iText.Kernel.Pdf.Canvas.Parser.Listener
|
||||
{
|
||||
public class ImageListener : FilteredEventListener
|
||||
{
|
||||
private readonly SortedDictionary<float, IChunk> chunkDictionairy;
|
||||
private Func<float> increaseCounter;
|
||||
|
||||
public ImageListener(SortedDictionary<float, IChunk> chunkDictionairy, Func<float> increaseCounter)
|
||||
{
|
||||
this.chunkDictionairy = chunkDictionairy;
|
||||
this.increaseCounter = increaseCounter;
|
||||
}
|
||||
|
||||
public override void EventOccurred(IEventData data, EventType type)
|
||||
{
|
||||
if (type != EventType.RENDER_IMAGE) return;
|
||||
|
||||
float counter = increaseCounter();
|
||||
|
||||
var renderInfo = (ImageRenderInfo)data;
|
||||
|
||||
var imageObject = renderInfo.GetImage();
|
||||
Bitmap image;
|
||||
|
||||
try
|
||||
{
|
||||
var imageBytes = imageObject.GetImageBytes();
|
||||
image = new Bitmap(new MemoryStream(imageBytes));
|
||||
}
|
||||
catch
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
var smask = imageObject.GetPdfObject().GetAsStream(PdfName.SMask);
|
||||
|
||||
if (smask != null)
|
||||
{
|
||||
try
|
||||
{
|
||||
var maskImageObject = new PdfImageXObject(smask);
|
||||
var maskBytes = maskImageObject.GetImageBytes();
|
||||
using (var maskImage = new Bitmap(new MemoryStream(maskBytes)))
|
||||
{
|
||||
image = GenerateMaskedImage(image, maskImage);
|
||||
}
|
||||
}
|
||||
catch { }
|
||||
}
|
||||
|
||||
var matix = renderInfo.GetImageCtm();
|
||||
|
||||
var imageChunk = new ImageChunk
|
||||
{
|
||||
X = matix.Get(Geom.Matrix.I31),
|
||||
Y = matix.Get(Geom.Matrix.I32),
|
||||
W = matix.Get(Geom.Matrix.I11),
|
||||
H = matix.Get(Geom.Matrix.I22),
|
||||
Image = image
|
||||
};
|
||||
|
||||
chunkDictionairy.Add(counter, imageChunk);
|
||||
|
||||
base.EventOccurred(data, type);
|
||||
}
|
||||
|
||||
private Bitmap GenerateMaskedImage(Bitmap image, Bitmap mask)
|
||||
{
|
||||
var output = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppArgb);
|
||||
var rect = new Rectangle(0, 0, image.Width, image.Height);
|
||||
var bitsMask = mask.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
|
||||
var bitsInput = image.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
|
||||
var bitsOutput = output.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
|
||||
|
||||
unsafe
|
||||
{
|
||||
for (int y = 0; y < image.Height; y++)
|
||||
{
|
||||
byte* ptrMask = (byte*)bitsMask.Scan0 + y * bitsMask.Stride;
|
||||
byte* ptrInput = (byte*)bitsInput.Scan0 + y * bitsInput.Stride;
|
||||
byte* ptrOutput = (byte*)bitsOutput.Scan0 + y * bitsOutput.Stride;
|
||||
for (int x = 0; x < image.Width; x++)
|
||||
{
|
||||
ptrOutput[4 * x] = ptrInput[4 * x]; // blue
|
||||
ptrOutput[4 * x + 1] = ptrInput[4 * x + 1]; // green
|
||||
ptrOutput[4 * x + 2] = ptrInput[4 * x + 2]; // red
|
||||
ptrOutput[4 * x + 3] = ptrMask[4 * x]; // alpha
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
mask.UnlockBits(bitsMask);
|
||||
image.UnlockBits(bitsInput);
|
||||
output.UnlockBits(bitsOutput);
|
||||
|
||||
return output;
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,29 @@
|
||||
using System;
|
||||
using System.Collections.Generic;
|
||||
using System.Text;
|
||||
|
||||
namespace itext.pdfimage.Extensions
|
||||
{
|
||||
public static class MeasuringExtensions
|
||||
{
|
||||
//72 points == 1
|
||||
//72px x 72px is 1inch x 1inch at a 72dpi resolution
|
||||
|
||||
public static int Dpi { get; set; } = 300;
|
||||
|
||||
public static float PixelsToPoints(this float value, int? dpi = null)
|
||||
{
|
||||
return value / (dpi ?? Dpi) * 72;
|
||||
}
|
||||
|
||||
public static int PointsToPixels(this int value, int? dpi = null)
|
||||
{
|
||||
return PointsToPixels((float)value);
|
||||
}
|
||||
|
||||
public static int PointsToPixels(this float value, int? dpi = null)
|
||||
{
|
||||
return (int)(value * (dpi ?? Dpi) / 72);
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,140 @@
|
||||
using iText.Kernel.Pdf;
|
||||
using iText.Kernel.Pdf.Canvas.Parser;
|
||||
using iText.Kernel.Pdf.Canvas.Parser.Listener;
|
||||
using System;
|
||||
using System.Collections.Generic;
|
||||
using System.IO;
|
||||
using itext.pdfimage.Models;
|
||||
using itext.pdfimage.Extensions;
|
||||
using System.Threading;
|
||||
|
||||
using System.Drawing;
|
||||
using System.Drawing.Drawing2D;
|
||||
using System.Drawing.Imaging;
|
||||
using System.Drawing.Text;
|
||||
|
||||
|
||||
namespace itext.pdfimage
|
||||
{
|
||||
public class PdfToImageConverter
|
||||
{
|
||||
private static int counter;
|
||||
|
||||
public IEnumerable<Bitmap> ConvertToBitmaps(PdfDocument pdfDocument)
|
||||
{
|
||||
counter = 0;
|
||||
|
||||
var numberOfPages = pdfDocument.GetNumberOfPages();
|
||||
|
||||
for (var i = 1; i <= numberOfPages; i++)
|
||||
{
|
||||
var currentPage = pdfDocument.GetPage(i);
|
||||
|
||||
yield return ConvertToBitmap(currentPage);
|
||||
}
|
||||
}
|
||||
|
||||
public IEnumerable<Stream> ConvertToJpgStreams(PdfDocument pdfDocument)
|
||||
{
|
||||
foreach (var bmp in ConvertToBitmaps(pdfDocument))
|
||||
{
|
||||
using (var ms = new MemoryStream())
|
||||
{
|
||||
bmp.Save(ms, ImageFormat.Jpeg);
|
||||
yield return ms;
|
||||
}
|
||||
bmp.Dispose();
|
||||
}
|
||||
}
|
||||
|
||||
public Bitmap ConvertToBitmap(PdfPage pdfPage)
|
||||
{
|
||||
var rotation = pdfPage.GetRotation();
|
||||
|
||||
var chunkDictionairy = new SortedDictionary<float, IChunk>();
|
||||
|
||||
FilteredEventListener listener = new FilteredEventListener();
|
||||
listener.AttachEventListener(new TextListener(chunkDictionairy, IncreaseCounter));
|
||||
listener.AttachEventListener(new ImageListener(chunkDictionairy, IncreaseCounter));
|
||||
PdfCanvasProcessor processor = new PdfCanvasProcessor(listener);
|
||||
processor.ProcessPageContent(pdfPage);
|
||||
|
||||
//var size = currentPage.GetPageSizeWithRotation();
|
||||
var size = pdfPage.GetPageSize();
|
||||
|
||||
var width = size.GetWidth().PointsToPixels();
|
||||
var height = size.GetHeight().PointsToPixels();
|
||||
|
||||
Bitmap bmp = new Bitmap(width, height);
|
||||
using (Graphics g = Graphics.FromImage(bmp))
|
||||
{
|
||||
g.FillRectangle(Brushes.White, 0, 0, bmp.Width, bmp.Height);
|
||||
|
||||
g.SmoothingMode = SmoothingMode.AntiAlias;
|
||||
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
|
||||
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
|
||||
g.TextRenderingHint = TextRenderingHint.SingleBitPerPixelGridFit;
|
||||
|
||||
foreach (var chunk in chunkDictionairy)
|
||||
{
|
||||
g.ResetTransform();
|
||||
|
||||
g.RotateTransform(-rotation);
|
||||
|
||||
if (chunk.Value is Models.ImageChunk imageChunk)
|
||||
{
|
||||
var imgW = imageChunk.W.PointsToPixels();
|
||||
var imgH = imageChunk.H.PointsToPixels();
|
||||
var imgX = imageChunk.X.PointsToPixels();
|
||||
var imgY = (size.GetHeight() - imageChunk.Y - imageChunk.H).PointsToPixels();
|
||||
|
||||
g.TranslateTransform(imgX, imgY, MatrixOrder.Append);
|
||||
g.DrawImage(imageChunk.Image, 0, 0, imgW, imgH);
|
||||
imageChunk.Image.Dispose();
|
||||
}
|
||||
else if (chunk.Value is Models.TextChunk textChunk)
|
||||
{
|
||||
var chunkX = textChunk.Rect.GetX().PointsToPixels();
|
||||
var chunkY = bmp.Height - textChunk.Rect.GetY().PointsToPixels();
|
||||
|
||||
var fontSize = textChunk.FontSize.PointsToPixels();
|
||||
|
||||
Font font;
|
||||
try
|
||||
{
|
||||
font = new Font(textChunk.FontFamily, fontSize, textChunk.FontStyle, GraphicsUnit.Pixel);
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
//log error
|
||||
|
||||
font = new Font("Calibri", 11, textChunk.FontStyle, GraphicsUnit.Pixel);
|
||||
}
|
||||
|
||||
g.TranslateTransform(chunkX, chunkY, MatrixOrder.Append);
|
||||
|
||||
//g.DrawString(textChunk.Text, font, new SolidBrush(textChunk.Color), chunkX, chunkY);
|
||||
g.DrawString(textChunk.Text, font, new SolidBrush(textChunk.Color), 0, 0);
|
||||
}
|
||||
}
|
||||
|
||||
g.Flush();
|
||||
}
|
||||
|
||||
return bmp;
|
||||
}
|
||||
|
||||
public Stream ConvertToJpgStream(PdfPage pdfPage)
|
||||
{
|
||||
var bmp = ConvertToBitmap(pdfPage);
|
||||
var ms = new MemoryStream();
|
||||
|
||||
bmp.Save(ms, ImageFormat.Jpeg);
|
||||
bmp.Dispose();
|
||||
return ms;
|
||||
|
||||
}
|
||||
|
||||
private Func<float> IncreaseCounter = () => counter = Interlocked.Increment(ref counter);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,16 @@
|
||||
using System.Drawing;
|
||||
|
||||
|
||||
namespace itext.pdfimage.Models
|
||||
{
|
||||
public class TextChunk : IChunk
|
||||
{
|
||||
public string Text { get; set; }
|
||||
public iText.Kernel.Geom.Rectangle Rect { get; set; }
|
||||
public string FontFamily { get; set; }
|
||||
public int FontSize { get; set; }
|
||||
public FontStyle FontStyle { get; set; }
|
||||
public float SpaceWidth { get; set; }
|
||||
public Color Color { get; internal set; }
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,117 @@
|
||||
using iText.Kernel.Geom;
|
||||
using iText.Kernel.Pdf.Canvas.Parser.Data;
|
||||
using System.Collections.Generic;
|
||||
using System.Text.RegularExpressions;
|
||||
using itext.pdfimage.Extensions;
|
||||
using itext.pdfimage.Models;
|
||||
using System;
|
||||
using System.Drawing;
|
||||
|
||||
namespace iText.Kernel.Pdf.Canvas.Parser.Listener
|
||||
{
|
||||
public class TextListener : LocationTextExtractionStrategy
|
||||
{
|
||||
private readonly SortedDictionary<float, IChunk> chunkDictionairy;
|
||||
private Func<float> increaseCounter;
|
||||
|
||||
public TextListener(SortedDictionary<float, IChunk> chunkDictionairy, Func<float> increaseCounter)
|
||||
{
|
||||
this.chunkDictionairy = chunkDictionairy;
|
||||
this.increaseCounter = increaseCounter;
|
||||
}
|
||||
|
||||
public override void EventOccurred(IEventData data, EventType type)
|
||||
{
|
||||
return;
|
||||
|
||||
if (!type.Equals(EventType.RENDER_TEXT)) return;
|
||||
|
||||
TextRenderInfo renderInfo = (TextRenderInfo)data;
|
||||
|
||||
float counter = increaseCounter();
|
||||
|
||||
var font = renderInfo.GetFont().GetFontProgram();
|
||||
var originalFontName = font.ToString();
|
||||
var fontRegex = Regex.Match(originalFontName, @"(?<=\+)[a-zA-Z\s]+");
|
||||
|
||||
string fontName = fontRegex.Success ? fontRegex.Value : originalFontName;
|
||||
|
||||
var fontStyle = font.GetFontNames().GetFontStyle();
|
||||
|
||||
float curFontSize = renderInfo.GetFontSize();
|
||||
|
||||
float key = counter;
|
||||
|
||||
IList<TextRenderInfo> text = renderInfo.GetCharacterRenderInfos();
|
||||
foreach (TextRenderInfo character in text)
|
||||
{
|
||||
key += 0.001f;
|
||||
|
||||
var textRenderMode = character.GetTextRenderMode();
|
||||
var opacity = character.GetGraphicsState().GetFillOpacity();
|
||||
|
||||
//if (textRenderMode != 0 || opacity != 1)
|
||||
//{
|
||||
|
||||
//}
|
||||
|
||||
string letter = character.GetText();
|
||||
|
||||
Color color;
|
||||
|
||||
var fillColor = character.GetFillColor();
|
||||
var colors = fillColor.GetColorValue();
|
||||
if(colors.Length == 1)
|
||||
{
|
||||
color = Color.FromArgb((int)(255 * (1 - colors[0])), Color.Black);
|
||||
}
|
||||
else if (colors.Length == 3)
|
||||
{
|
||||
color = Color.FromArgb((int)(255 * colors[0]), (int)(255 * colors[1]), (int)(255 * colors[2]));
|
||||
}
|
||||
else if (colors.Length == 4)
|
||||
{
|
||||
color = Color.FromArgb((int)(255 * colors[0]), (int)(255 * colors[1]), (int)(255 * colors[2]), (int)(255 * colors[3]));
|
||||
}
|
||||
else
|
||||
{
|
||||
color = Color.Black;
|
||||
}
|
||||
|
||||
//if(letter == "A")
|
||||
//{
|
||||
|
||||
//}
|
||||
|
||||
if (string.IsNullOrWhiteSpace(letter)) continue;
|
||||
|
||||
//Get the bounding box for the chunk of text
|
||||
var bottomLeft = character.GetDescentLine().GetStartPoint();
|
||||
var topRight = character.GetAscentLine().GetEndPoint();
|
||||
|
||||
//Create a rectangle from it
|
||||
var rect = new Geom.Rectangle(
|
||||
bottomLeft.Get(Vector.I1),
|
||||
topRight.Get(Vector.I2),
|
||||
topRight.Get(Vector.I1),
|
||||
topRight.Get(Vector.I2)
|
||||
);
|
||||
|
||||
var currentChunk = new itext.pdfimage.Models.TextChunk()
|
||||
{
|
||||
Text = letter,
|
||||
Rect = rect,
|
||||
FontFamily = fontName,
|
||||
FontSize = (int)curFontSize,
|
||||
FontStyle = fontStyle,
|
||||
Color = color,
|
||||
SpaceWidth = character.GetSingleSpaceWidth() / 2f
|
||||
};
|
||||
|
||||
chunkDictionairy.Add(key, currentChunk);
|
||||
}
|
||||
|
||||
base.EventOccurred(data, type);
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user