lsm/PdfPig
1
0
Fork 0
mirror of https://github.com/UglyToad/PdfPig.git synced 2025-04-05 20:55:01 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Refactor XObjectFactory
Some checks failed
Build and test / build (push) Has been cancelled
Details
Run Integration Tests / build (push) Has been cancelled
Details

Browse Source
This commit is contained in:
BobLd 2025-01-19 20:19:15 +00:00
parent 24b9a99b8a
commit b7e2245eca
1 changed files with 34 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
src/UglyToad.PdfPig/XObjects/XObjectFactory.cs
View File

@ -1,7 +1,6 @@
namespace UglyToad.PdfPig.XObjects
{
using System;
using System.Collections.Generic;
using System.Linq;
using Content;
using Core;
@ -21,7 +20,8 @@
/// <summary>
/// Read the XObject image.
/// </summary>
public static XObjectImage ReadImage(XObjectContentRecord xObject, IPdfTokenScanner pdfScanner,
public static XObjectImage ReadImage(XObjectContentRecord xObject,
IPdfTokenScanner pdfScanner,
ILookupFilterProvider filterProvider,
IResourceStore resourceStore)
{
@ -42,11 +42,14 @@
var width = dictionary.Get<NumericToken>(NameToken.Width, pdfScanner).Int;
var height = dictionary.Get<NumericToken>(NameToken.Height, pdfScanner).Int;
var isImageMask = dictionary.TryGet(NameToken.ImageMask, pdfScanner, out BooleanToken? isMaskToken)
&& isMaskToken.Data;
bool isImageMask = false;
if (dictionary.TryGet(NameToken.ImageMask, pdfScanner, out BooleanToken? isMaskToken))
{
dictionary = dictionary.With(NameToken.ImageMask, isMaskToken);
isImageMask = isMaskToken.Data;
}
var isJpxDecode = dictionary.TryGet(NameToken.Filter, out var token)
&& token is NameToken filterName
var isJpxDecode = dictionary.TryGet(NameToken.Filter, pdfScanner, out NameToken filterName)
&& filterName.Equals(NameToken.JpxDecode);
int bitsPerComponent = 0;
@ -65,7 +68,7 @@
}
var intent = xObject.DefaultRenderingIntent;
if (dictionary.TryGet(NameToken.Intent, out NameToken renderingIntentToken))
if (dictionary.TryGet(NameToken.Intent, pdfScanner, out NameToken renderingIntentToken))
{
intent = renderingIntentToken.Data.ToRenderingIntent();
}
@ -73,35 +76,26 @@
var interpolate = dictionary.TryGet(NameToken.Interpolate, pdfScanner, out BooleanToken? interpolateToken)
&& interpolateToken.Data;
DictionaryToken? filterDictionary = xObject.Stream.StreamDictionary;
if (xObject.Stream.StreamDictionary.TryGet(NameToken.Filter, out var filterToken)
&& filterToken is IndirectReferenceToken)
if (dictionary.TryGet(NameToken.Filter, out var filterToken) && filterToken is IndirectReferenceToken)
{
if (filterDictionary.TryGet(NameToken.Filter, pdfScanner, out ArrayToken? filterArray))
if (dictionary.TryGet(NameToken.Filter, pdfScanner, out ArrayToken? filterArray))
{
filterDictionary = filterDictionary.With(NameToken.Filter, filterArray);
dictionary = dictionary.With(NameToken.Filter, filterArray);
}
else if (filterDictionary.TryGet(NameToken.Filter, pdfScanner, out NameToken? filterNameToken))
else if (dictionary.TryGet(NameToken.Filter, pdfScanner, out NameToken? filterNameToken))
{
filterDictionary = filterDictionary.With(NameToken.Filter, filterNameToken);
}
else
{
filterDictionary = null;
dictionary = dictionary.With(NameToken.Filter, filterNameToken);
}
}
var supportsFilters = filterDictionary != null;
if (filterDictionary != null)
var supportsFilters = true;
var filters = filterProvider.GetFilters(dictionary, pdfScanner);
foreach (var filter in filters)
{
var filters = filterProvider.GetFilters(filterDictionary, pdfScanner);
foreach (var filter in filters)
if (!filter.IsSupported)
{
if (!filter.IsSupported)
{
supportsFilters = false;
break;
}
supportsFilters = false;
break;
}
}
@ -109,7 +103,19 @@
if (decodeParams is IndirectReferenceToken refToken)
{
dictionary = dictionary.With(NameToken.DecodeParms, pdfScanner.Get(refToken.Data).Data);
}
}
var jbig2GlobalsParams = dictionary.GetObjectOrDefault(NameToken.Jbig2Globals);
if (jbig2GlobalsParams is IndirectReferenceToken jbig2RefToken)
{
dictionary = dictionary.With(NameToken.Jbig2Globals, pdfScanner.Get(jbig2RefToken.Data).Data);
}
var imParams = dictionary.GetObjectOrDefault(NameToken.Im);
if (imParams is IndirectReferenceToken imRefToken)
{
dictionary = dictionary.With(NameToken.Im, pdfScanner.Get(imRefToken.Data).Data);
}
var streamToken = new StreamToken(dictionary, xObject.Stream.Data);