public override void Draw(DrawContext drawContext)
{
if (occupiedArea == null)
{
ILog logger = LogManager.GetLogger(typeof(iText.Layout.Renderer.ListItemRenderer));
logger.Error(MessageFormatUtil.Format(iText.IO.LogMessageConstant.OCCUPIED_AREA_HAS_NOT_BEEN_INITIALIZED,
"Drawing won't be performed."));
return;
}
if (drawContext.IsTaggingEnabled())
{
LayoutTaggingHelper taggingHelper = this.GetProperty <LayoutTaggingHelper>(Property.TAGGING_HELPER);
if (taggingHelper != null)
{
if (symbolRenderer != null)
{
LayoutTaggingHelper.AddTreeHints(taggingHelper, symbolRenderer);
}
if (taggingHelper.IsArtifact(this))
{
taggingHelper.MarkArtifactHint(symbolRenderer);
}
else
{
TaggingHintKey hintKey = LayoutTaggingHelper.GetHintKey(this);
TaggingHintKey parentHint = taggingHelper.GetAccessibleParentHint(hintKey);
if (parentHint != null && !(StandardRoles.LI.Equals(parentHint.GetAccessibleElement().GetAccessibilityProperties
().GetRole())))
{
TaggingDummyElement listItemIntermediate = new TaggingDummyElement(StandardRoles.LI);
IList <TaggingHintKey> intermediateKid = JavaCollectionsUtil.SingletonList <TaggingHintKey>(LayoutTaggingHelper
.GetOrCreateHintKey(listItemIntermediate));
taggingHelper.ReplaceKidHint(hintKey, intermediateKid);
if (symbolRenderer != null)
{
taggingHelper.AddKidsHint(listItemIntermediate, JavaCollectionsUtil.SingletonList <IRenderer>(symbolRenderer
));
}
taggingHelper.AddKidsHint(listItemIntermediate, JavaCollectionsUtil.SingletonList <IRenderer>(this));
}
}
}
}
base.Draw(drawContext);
// It will be null in case of overflow (only the "split" part will contain symbol renderer.
if (symbolRenderer != null && !symbolAddedInside)
{
bool isRtl = BaseDirection.RIGHT_TO_LEFT.Equals(this.GetProperty <BaseDirection?>(Property.BASE_DIRECTION));
symbolRenderer.SetParent(this);
float x = isRtl ? occupiedArea.GetBBox().GetRight() : occupiedArea.GetBBox().GetLeft();
ListSymbolPosition symbolPosition = (ListSymbolPosition)ListRenderer.GetListItemOrListProperty(this, parent
, Property.LIST_SYMBOL_POSITION);
if (symbolPosition != ListSymbolPosition.DEFAULT)
{
float?symbolIndent = this.GetPropertyAsFloat(Property.LIST_SYMBOL_INDENT);
if (isRtl)
{
x += (symbolAreaWidth + (float)(symbolIndent == null ? 0 : symbolIndent));
}
else
{
x -= (symbolAreaWidth + (float)(symbolIndent == null ? 0 : symbolIndent));
}
if (symbolPosition == ListSymbolPosition.OUTSIDE)
{
if (isRtl)
{
UnitValue marginRightUV = this.GetPropertyAsUnitValue(Property.MARGIN_RIGHT);
if (!marginRightUV.IsPointValue())
{
ILog logger = LogManager.GetLogger(typeof(iText.Layout.Renderer.ListItemRenderer));
logger.Error(MessageFormatUtil.Format(iText.IO.LogMessageConstant.PROPERTY_IN_PERCENTS_NOT_SUPPORTED, Property
.MARGIN_RIGHT));
}
x -= marginRightUV.GetValue();
}
else
{
UnitValue marginLeftUV = this.GetPropertyAsUnitValue(Property.MARGIN_LEFT);
if (!marginLeftUV.IsPointValue())
{
ILog logger = LogManager.GetLogger(typeof(iText.Layout.Renderer.ListItemRenderer));
logger.Error(MessageFormatUtil.Format(iText.IO.LogMessageConstant.PROPERTY_IN_PERCENTS_NOT_SUPPORTED, Property
.MARGIN_LEFT));
}
x += marginLeftUV.GetValue();
}
}
}
ApplyMargins(occupiedArea.GetBBox(), false);
ApplyBorderBox(occupiedArea.GetBBox(), false);
if (childRenderers.Count > 0)
{
float?yLine = null;
for (int i = 0; i < childRenderers.Count; i++)
{
if (childRenderers[i].GetOccupiedArea().GetBBox().GetHeight() > 0)
{
yLine = ((AbstractRenderer)childRenderers[i]).GetFirstYLineRecursively();
if (yLine != null)
{
break;
}
}
}
if (yLine != null)
{
if (symbolRenderer is LineRenderer)
{
symbolRenderer.Move(0, (float)yLine - ((LineRenderer)symbolRenderer).GetYLine());
}
else
{
symbolRenderer.Move(0, (float)yLine - symbolRenderer.GetOccupiedArea().GetBBox().GetY());
}
}
else
{
symbolRenderer.Move(0, occupiedArea.GetBBox().GetY() + occupiedArea.GetBBox().GetHeight() - (symbolRenderer
.GetOccupiedArea().GetBBox().GetY() + symbolRenderer.GetOccupiedArea().GetBBox().GetHeight()));
}
}
else
{
if (symbolRenderer is TextRenderer)
{
((TextRenderer)symbolRenderer).MoveYLineTo(occupiedArea.GetBBox().GetY() + occupiedArea.GetBBox().GetHeight
() - CalculateAscenderDescender()[0]);
}
else
{
symbolRenderer.Move(0, occupiedArea.GetBBox().GetY() + occupiedArea.GetBBox().GetHeight() - symbolRenderer
.GetOccupiedArea().GetBBox().GetHeight() - symbolRenderer.GetOccupiedArea().GetBBox().GetY());
}
}
ApplyBorderBox(occupiedArea.GetBBox(), true);
ApplyMargins(occupiedArea.GetBBox(), true);
ListSymbolAlignment listSymbolAlignment = (ListSymbolAlignment)parent.GetProperty <ListSymbolAlignment?>(Property
.LIST_SYMBOL_ALIGNMENT, isRtl ? ListSymbolAlignment.LEFT : ListSymbolAlignment.RIGHT);
float dxPosition = x - symbolRenderer.GetOccupiedArea().GetBBox().GetX();
if (listSymbolAlignment == ListSymbolAlignment.RIGHT)
{
if (!isRtl)
{
dxPosition += symbolAreaWidth - symbolRenderer.GetOccupiedArea().GetBBox().GetWidth();
}
}
else
{
if (listSymbolAlignment == ListSymbolAlignment.LEFT)
{
if (isRtl)
{
dxPosition -= (symbolAreaWidth - symbolRenderer.GetOccupiedArea().GetBBox().GetWidth());
}
}
}
if (symbolRenderer is LineRenderer)
{
if (isRtl)
{
symbolRenderer.Move(dxPosition - symbolRenderer.GetOccupiedArea().GetBBox().GetWidth(), 0);
}
else
{
symbolRenderer.Move(dxPosition, 0);
}
}
else
{
symbolRenderer.Move(dxPosition, 0);
}
if (symbolRenderer.GetOccupiedArea().GetBBox().GetRight() > parent.GetOccupiedArea().GetBBox().GetLeft())
{
BeginElementOpacityApplying(drawContext);
symbolRenderer.Draw(drawContext);
EndElementOpacityApplying(drawContext);
}
}
}
protected void ManipulatePdf(String dest)
{
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(dest));
pdfDocument.SetTagged();
Document doc = new Document(pdfDocument);
Table table = new Table(UnitValue.CreatePercentArray(3)).UseAllAvailableWidth();
// Initialize ID strings beforehand. Every ID should be unique across the document
PdfString[] headersId =
{
// Since '/ID' is a `byte string` according to specification we are not passing
// encoding to the constructor of the PdfString
new PdfString("header_id_0"), new PdfString("header_id_1"), new PdfString("header_id_2")
};
PdfName idTreeName = new PdfName("IDTree");
PdfNameTree idTree = new PdfNameTree(pdfDocument.GetCatalog(), idTreeName);
for (int i = 0; i < 3; ++i)
{
Cell c = new Cell().Add(new Paragraph("Header " + (i + 1)));
c.GetAccessibilityProperties().SetRole(StandardRoles.TH);
table.AddHeaderCell(c);
PdfString headerId = headersId[i];
// Use custom renderer for cell header element in order to add ID to its tag
CellRenderer renderer = new StructIdCellRenderer(c, doc, headerId, idTree);
c.SetNextRenderer(renderer);
}
List <TaggingHintKey> colSpanHints = new List <TaggingHintKey>();
for (int i = 0; i < 4; i++)
{
Cell c;
if (i < 3)
{
c = new Cell().Add(new Paragraph((i + 1).ToString()));
}
else
{
// Colspan creation
c = new Cell(1, 3).Add(new Paragraph((i + 1).ToString()));
}
if (i < 3)
{
// Correct table tagging requires marking which headers correspond to the given cell.
// The correspondence is defined by header cells tags IDs. For table cells without
// col/row spans it's easy to reference a header: just add proper
// PdfStructureAttributes to it. Table cells with col spans are processed below.
PdfStructureAttributes tableAttributes = new PdfStructureAttributes("Table");
PdfArray headers;
headers = new PdfArray(headersId[i % headersId.Length]);
tableAttributes.GetPdfObject().Put(PdfName.Headers, headers);
c.GetAccessibilityProperties().AddAttributes(tableAttributes);
}
else
{
// When we add PdfStructureAttributes to the element these attributes override any
// attributes generated for it automatically. E.g. cells with colspan require properly
// generated attributes which describe the colspan (e.g. which columns this cell spans).
// So here we will use a different approach: fetch the tag which will be created for
// the cell and modify attributes object directly.
TaggingHintKey colSpanCellHint = LayoutTaggingHelper.GetOrCreateHintKey(c);
colSpanHints.Add(colSpanCellHint);
}
table.AddCell(c);
}
doc.Add(table);
// After table has been drawn on the page, we can modify the colspan cells tags
foreach (TaggingHintKey colSpanHint in colSpanHints)
{
WaitingTagsManager waitingTagsManager = pdfDocument.GetTagStructureContext().GetWaitingTagsManager();
TagTreePointer p = new TagTreePointer(pdfDocument);
// Move tag pointer to the colspan cell using its hint
if (!waitingTagsManager.TryMovePointerToWaitingTag(p, colSpanHint))
{
// It is not expected to happen ever if immediate-flush is enabled (which is by default),
// otherwise this should be done after the flush
throw new InvalidOperationException("A work-around does not work. A tag for the cell is " +
"not created or cannot be found.");
}
foreach (PdfStructureAttributes attr in p.GetProperties().GetAttributesList())
{
if ("Table".Equals(attr.GetAttributeAsEnum("O")))
{
// Specify all the headers for the column spanning (all of 3)
PdfArray headers = new PdfArray(headersId);
attr.GetPdfObject().Put(PdfName.Headers, headers);
break;
}
}
}
pdfDocument.GetStructTreeRoot().GetPdfObject().Put(idTreeName, idTree.BuildTree()
.MakeIndirect(pdfDocument));
doc.Close();
}
