/// <summary>Generates new (unique) resource name.</summary>
/// <param name="resources">
/// the
/// <see cref="PdfResources"/>
/// object for which name will be generated.
/// </param>
/// <returns>new (unique) resource name.</returns>
public virtual PdfName Generate(PdfResources resources)
{
PdfName newName = new PdfName(prefix + counter++);
PdfDictionary r = resources.GetPdfObject();
if (r.ContainsKey(resourceType))
{
while (r.GetAsDictionary(resourceType).ContainsKey(newName))
{
newName = new PdfName(prefix + counter++);
}
}
return(newName);
}
public virtual void ResourcesCategoryDictionarySetModifiedTest()
{
PdfDictionary pdfDict = new PdfDictionary();
pdfDict.Put(PdfName.ExtGState, new PdfDictionary());
PdfResources resources = new PdfResources(pdfDict);
PdfObject resourceCategoryDict = resources.GetPdfObject().Get(PdfName.ExtGState);
resourceCategoryDict.SetIndirectReference(new PdfIndirectReference(null, 1));
NUnit.Framework.Assert.IsFalse(resourceCategoryDict.IsModified());
resources.AddExtGState(new PdfExtGState());
// Check that when changing an existing resource category dictionary, the flag PdfObject.MODIFIED will be set for it
NUnit.Framework.Assert.IsTrue(resourceCategoryDict.IsModified());
}
private bool FlushPage(int pageNum)
{
PdfPage page = pdfDoc.GetPage(pageNum);
if (page.IsFlushed())
{
return(false);
}
bool pageChanged = false;
if (!release)
{
pdfDoc.DispatchEvent(new PdfDocumentEvent(PdfDocumentEvent.END_PAGE, page));
InitCurrentLayers(pdfDoc);
}
PdfDictionary pageDict = page.GetPdfObject();
// Using PdfPage package internal methods in order to avoid PdfResources initialization: initializing PdfResources
// limits processing possibilities only to cases in which resources and specific resource type dictionaries are not flushed.
PdfDictionary resourcesDict = page.InitResources(false);
// inits /Resources dict entry if not inherited and not created yet
PdfResources resources = page.GetResources(false);
if (resources != null && resources.IsModified() && !resources.IsReadOnly())
{
resourcesDict = resources.GetPdfObject();
pageDict.Put(PdfName.Resources, resources.GetPdfObject());
pageDict.SetModified();
pageChanged = true;
}
if (!resourcesDict.IsFlushed())
{
FlushDictRecursively(resourcesDict, null);
FlushOrRelease(resourcesDict);
}
FlushDictRecursively(pageDict, pageContext);
if (release)
{
if (!page.GetPdfObject().IsModified())
{
pdfDoc.GetCatalog().GetPageTree().ReleasePage(pageNum);
page.UnsetForbidRelease();
page.GetPdfObject().Release();
}
}
else
{
if (pdfDoc.IsTagged() && !pdfDoc.GetStructTreeRoot().IsFlushed())
{
page.TryFlushPageTags();
}
if (!pdfDoc.IsAppendMode() || page.GetPdfObject().IsModified())
{
page.ReleaseInstanceFields();
page.GetPdfObject().Flush();
}
else
{
// it's append mode
pdfDoc.GetCatalog().GetPageTree().ReleasePage(pageNum);
page.UnsetForbidRelease();
page.GetPdfObject().Release();
}
}
layersRefs.Clear();
return(pageChanged);
}
public virtual iText.Kernel.Pdf.PdfPage SetResources(PdfResources pdfResources)
{
GetPdfObject().Put(PdfName.Resources, pdfResources.GetPdfObject());
this.resources = pdfResources;
return(this);
}
