public override void Draw(DrawContext drawContext)
{
LayoutTaggingHelper taggingHelper = GetProperty <LayoutTaggingHelper>(Property.TAGGING_HELPER);
// We want to reach the actual tag from logical structure tree, in order to set custom properties, for
// which iText doesn't provide convenient API at the moment. Specifically we are aiming at setting /ID
// entry in structure element dictionary corresponding to the table header cell. Here we are creating tag
// for the current element in logical structure tree right at the beginning of #draw method.
// If this particular instance of header cell is paging artifact it would be marked so by layouting
// engine and it would not allow to create a tag (return value of the method would be 'false').
// If this particular instance of header cell is the header which is to be tagged, a tag will be created.
// It's safe to create a tag at this moment, it will be picked up and placed at correct position in the
// logical structure tree later by layout engine.
TagTreePointer p = new TagTreePointer(pdfDocument);
if (taggingHelper.CreateTag(this, p))
{
// After the tag is created, we can fetch low level entity PdfStructElem
// in order to work with it directly. These changes would be directly reflected
// in the PDF file inner structure.
PdfStructElem structElem = tagContext.GetPointerStructElem(p);
PdfDictionary structElemDict = structElem.GetPdfObject();
structElemDict.Put(PdfName.ID, headerId);
idTree.AddEntry(headerId.GetValue(), structElemDict);
}
base.Draw(drawContext);
}
/// <summary>Draws margin boxes.</summary>
/// <param name="pageNumber">the page</param>
/// <param name="pdfDocument">
/// the
/// <see cref="iText.Kernel.Pdf.PdfDocument"/>
/// to which content is written
/// </param>
/// <param name="documentRenderer">the document renderer</param>
private void DrawMarginBoxes(int pageNumber, PdfDocument pdfDocument, DocumentRenderer documentRenderer)
{
if (properties.GetResolvedPageMarginBoxes().IsEmpty())
{
return;
}
PdfPage page = pdfDocument.GetPage(pageNumber);
foreach (PageMarginBoxContextNode marginBoxContentNode in properties.GetResolvedPageMarginBoxes())
{
IElement curBoxElement = ProcessMarginBoxContent(marginBoxContentNode, pageNumber, context);
IRenderer renderer = curBoxElement.CreateRendererSubTree();
RemoveAreaBreaks(renderer);
renderer.SetParent(documentRenderer);
bool isTagged = pdfDocument.IsTagged();
if (isTagged)
{
LayoutTaggingHelper taggingHelper = renderer.GetProperty <LayoutTaggingHelper>(Property.TAGGING_HELPER);
LayoutTaggingHelper.AddTreeHints(taggingHelper, renderer);
}
LayoutResult result = renderer.Layout(new LayoutContext(new LayoutArea(pageNumber, marginBoxContentNode.GetPageMarginBoxRectangle
())));
IRenderer rendererToDraw = result.GetStatus() == LayoutResult.FULL ? renderer : result.GetSplitRenderer();
if (rendererToDraw != null)
{
TagTreePointer tagPointer = null;
TagTreePointer backupPointer = null;
PdfPage backupPage = null;
if (isTagged)
{
tagPointer = pdfDocument.GetTagStructureContext().GetAutoTaggingPointer();
backupPage = tagPointer.GetCurrentPage();
backupPointer = new TagTreePointer(tagPointer);
tagPointer.MoveToRoot();
tagPointer.SetPageForTagging(page);
}
rendererToDraw.SetParent(documentRenderer).Draw(new DrawContext(page.GetDocument(), new PdfCanvas(page), isTagged
));
if (isTagged)
{
tagPointer.SetPageForTagging(backupPage);
tagPointer.MoveToPointer(backupPointer);
}
}
else
{
// marginBoxElements have overflow property set to HIDDEN, therefore it is not expected to neither get
// LayoutResult other than FULL nor get no split renderer (result NOTHING) even if result is not FULL
ILog logger = LogManager.GetLogger(typeof(iText.Html2pdf.Attach.Impl.Layout.PageContextProcessor));
logger.Error(MessageFormatUtil.Format(iText.Html2pdf.LogMessageConstant.PAGE_MARGIN_BOX_CONTENT_CANNOT_BE_DRAWN
, marginBoxContentNode.GetMarginBoxName()));
}
}
}
protected internal virtual void CreateAndAddRendererSubTree(IElement element)
{
IRenderer rendererSubTreeRoot = element.CreateRendererSubTree();
LayoutTaggingHelper taggingHelper = InitTaggingHelperIfNeeded();
if (taggingHelper != null)
{
taggingHelper.AddKidsHint(pdfDocument.GetTagStructureContext().GetAutoTaggingPointer(), JavaCollectionsUtil
.SingletonList <IRenderer>(rendererSubTreeRoot));
}
EnsureRootRendererNotNull().AddChild(rendererSubTreeRoot);
}
private IRenderer CreateRendererFromElement(IElement element, DocumentRenderer documentRenderer, PdfDocument
pdfDocument)
{
if (element != null)
{
IRenderer renderer = element.CreateRendererSubTree();
RemoveAreaBreaks(renderer);
renderer.SetParent(documentRenderer);
if (pdfDocument.IsTagged())
{
LayoutTaggingHelper taggingHelper = renderer.GetProperty <LayoutTaggingHelper>(Property.TAGGING_HELPER);
LayoutTaggingHelper.AddTreeHints(taggingHelper, renderer);
}
return(renderer);
}
return(null);
}
/// <summary>
/// This method correctly closes the
/// <see cref="RootRenderer"/>
/// instance.
/// There might be hanging elements, like in case of
/// <see cref="iText.Layout.Properties.Property.KEEP_WITH_NEXT"/>
/// is set to true
/// and when no consequent element has been added. This method addresses such situations.
/// </summary>
public virtual void Close()
{
AddAllWaitingNextPageRenderers();
if (keepWithNextHangingRenderer != null)
{
keepWithNextHangingRenderer.SetProperty(Property.KEEP_WITH_NEXT, false);
IRenderer rendererToBeAdded = keepWithNextHangingRenderer;
keepWithNextHangingRenderer = null;
AddChild(rendererToBeAdded);
}
if (!immediateFlush)
{
Flush();
}
FlushWaitingDrawingElements();
LayoutTaggingHelper taggingHelper = this.GetProperty <LayoutTaggingHelper>(Property.TAGGING_HELPER);
if (taggingHelper != null)
{
taggingHelper.ReleaseAllHints();
}
}
protected internal override LayoutArea UpdateCurrentArea(LayoutResult overflowResult)
{
FlushWaitingDrawingElements();
LayoutTaggingHelper taggingHelper = this.GetProperty <LayoutTaggingHelper>(Property.TAGGING_HELPER);
if (taggingHelper != null)
{
taggingHelper.ReleaseFinishedHints();
}
AreaBreak areaBreak = overflowResult != null && overflowResult.GetAreaBreak() != null?overflowResult.GetAreaBreak
() : null;
if (areaBreak != null && areaBreak.GetAreaType() == AreaBreakType.LAST_PAGE)
{
while (currentPageNumber < document.GetPdfDocument().GetNumberOfPages())
{
MoveToNextPage();
}
}
else
{
MoveToNextPage();
}
PageSize customPageSize = areaBreak != null?areaBreak.GetPageSize() : null;
while (document.GetPdfDocument().GetNumberOfPages() >= currentPageNumber && document.GetPdfDocument().GetPage
(currentPageNumber).IsFlushed())
{
currentPageNumber++;
}
PageSize lastPageSize = EnsureDocumentHasNPages(currentPageNumber, customPageSize);
if (lastPageSize == null)
{
lastPageSize = new PageSize(document.GetPdfDocument().GetPage(currentPageNumber).GetTrimBox());
}
return(currentArea = new RootLayoutArea(currentPageNumber, GetCurrentPageEffectiveArea(lastPageSize)));
}
public override void AddChild(IRenderer renderer)
{
LayoutTaggingHelper taggingHelper = this.GetProperty <LayoutTaggingHelper>(Property.TAGGING_HELPER);
if (taggingHelper != null)
{
LayoutTaggingHelper.AddTreeHints(taggingHelper, renderer);
}
// Some positioned renderers might have been fetched from non-positioned child and added to this renderer,
// so we use this generic mechanism of determining which renderers have been just added.
int numberOfChildRenderers = childRenderers.Count;
int numberOfPositionedChildRenderers = positionedRenderers.Count;
base.AddChild(renderer);
IList <IRenderer> addedRenderers = new List <IRenderer>(1);
IList <IRenderer> addedPositionedRenderers = new List <IRenderer>(1);
while (childRenderers.Count > numberOfChildRenderers)
{
addedRenderers.Add(childRenderers[numberOfChildRenderers]);
childRenderers.JRemoveAt(numberOfChildRenderers);
}
while (positionedRenderers.Count > numberOfPositionedChildRenderers)
{
addedPositionedRenderers.Add(positionedRenderers[numberOfPositionedChildRenderers]);
positionedRenderers.JRemoveAt(numberOfPositionedChildRenderers);
}
bool marginsCollapsingEnabled = true.Equals(GetPropertyAsBoolean(Property.COLLAPSING_MARGINS));
if (currentArea == null)
{
UpdateCurrentAndInitialArea(null);
if (marginsCollapsingEnabled)
{
marginsCollapseHandler = new MarginsCollapseHandler(this, null);
}
}
// Static layout
for (int i = 0; currentArea != null && i < addedRenderers.Count; i++)
{
renderer = addedRenderers[i];
bool rendererIsFloat = FloatingHelper.IsRendererFloating(renderer);
bool clearanceOverflowsToNextPage = FloatingHelper.IsClearanceApplied(waitingNextPageRenderers, renderer.GetProperty
<ClearPropertyValue?>(Property.CLEAR));
if (rendererIsFloat && (floatOverflowedCompletely || clearanceOverflowsToNextPage))
{
waitingNextPageRenderers.Add(renderer);
floatOverflowedCompletely = true;
continue;
}
ProcessWaitingKeepWithNextElement(renderer);
IList <IRenderer> resultRenderers = new List <IRenderer>();
LayoutResult result = null;
RootLayoutArea storedArea = null;
RootLayoutArea nextStoredArea = null;
MarginsCollapseInfo childMarginsInfo = null;
if (marginsCollapsingEnabled && currentArea != null && renderer != null)
{
childMarginsInfo = marginsCollapseHandler.StartChildMarginsHandling(renderer, currentArea.GetBBox());
}
while (clearanceOverflowsToNextPage || currentArea != null && renderer != null && (result = renderer.SetParent
(this).Layout(new LayoutContext(currentArea.Clone(), childMarginsInfo, floatRendererAreas))).GetStatus
() != LayoutResult.FULL)
{
bool currentAreaNeedsToBeUpdated = false;
if (clearanceOverflowsToNextPage)
{
result = new LayoutResult(LayoutResult.NOTHING, null, null, renderer);
currentAreaNeedsToBeUpdated = true;
}
if (result.GetStatus() == LayoutResult.PARTIAL)
{
if (rendererIsFloat)
{
waitingNextPageRenderers.Add(result.GetOverflowRenderer());
break;
}
else
{
ProcessRenderer(result.GetSplitRenderer(), resultRenderers);
if (nextStoredArea != null)
{
currentArea = nextStoredArea;
currentPageNumber = nextStoredArea.GetPageNumber();
nextStoredArea = null;
}
else
{
currentAreaNeedsToBeUpdated = true;
}
}
}
else
{
if (result.GetStatus() == LayoutResult.NOTHING && !clearanceOverflowsToNextPage)
{
if (result.GetOverflowRenderer() is ImageRenderer)
{
float imgHeight = ((ImageRenderer)result.GetOverflowRenderer()).GetOccupiedArea().GetBBox().GetHeight();
if (!floatRendererAreas.IsEmpty() || currentArea.GetBBox().GetHeight() < imgHeight && !currentArea.IsEmptyArea
())
{
if (rendererIsFloat)
{
waitingNextPageRenderers.Add(result.GetOverflowRenderer());
floatOverflowedCompletely = true;
break;
}
currentAreaNeedsToBeUpdated = true;
}
else
{
((ImageRenderer)result.GetOverflowRenderer()).AutoScale(currentArea);
result.GetOverflowRenderer().SetProperty(Property.FORCED_PLACEMENT, true);
ILog logger = LogManager.GetLogger(typeof(RootRenderer));
logger.Warn(MessageFormatUtil.Format(iText.IO.LogMessageConstant.ELEMENT_DOES_NOT_FIT_AREA, ""));
}
}
else
{
if (currentArea.IsEmptyArea() && result.GetAreaBreak() == null)
{
if (true.Equals(result.GetOverflowRenderer().GetModelElement().GetProperty <bool?>(Property.KEEP_TOGETHER))
)
{
result.GetOverflowRenderer().GetModelElement().SetProperty(Property.KEEP_TOGETHER, false);
ILog logger = LogManager.GetLogger(typeof(RootRenderer));
logger.Warn(MessageFormatUtil.Format(iText.IO.LogMessageConstant.ELEMENT_DOES_NOT_FIT_AREA, "KeepTogether property will be ignored."
));
if (storedArea != null)
{
nextStoredArea = currentArea;
currentArea = storedArea;
currentPageNumber = storedArea.GetPageNumber();
}
storedArea = currentArea;
}
else
{
if (null != result.GetCauseOfNothing() && true.Equals(result.GetCauseOfNothing().GetProperty <bool?>(Property
.KEEP_TOGETHER)))
{
// set KEEP_TOGETHER false on the deepest parent (maybe the element itself) to have KEEP_TOGETHER == true
IRenderer theDeepestKeptTogether = result.GetCauseOfNothing();
IRenderer parent;
while (null == theDeepestKeptTogether.GetModelElement() || null == theDeepestKeptTogether.GetModelElement(
).GetOwnProperty <bool?>(Property.KEEP_TOGETHER))
{
parent = ((AbstractRenderer)theDeepestKeptTogether).parent;
if (parent == null)
{
break;
}
theDeepestKeptTogether = parent;
}
theDeepestKeptTogether.GetModelElement().SetProperty(Property.KEEP_TOGETHER, false);
ILog logger = LogManager.GetLogger(typeof(RootRenderer));
logger.Warn(MessageFormatUtil.Format(iText.IO.LogMessageConstant.ELEMENT_DOES_NOT_FIT_AREA, "KeepTogether property of inner element will be ignored."
));
}
else
{
if (!true.Equals(renderer.GetProperty <bool?>(Property.FORCED_PLACEMENT)))
{
result.GetOverflowRenderer().SetProperty(Property.FORCED_PLACEMENT, true);
ILog logger = LogManager.GetLogger(typeof(RootRenderer));
logger.Warn(MessageFormatUtil.Format(iText.IO.LogMessageConstant.ELEMENT_DOES_NOT_FIT_AREA, ""));
}
else
{
// FORCED_PLACEMENT was already set to the renderer and
// LogMessageConstant.ELEMENT_DOES_NOT_FIT_AREA message was logged.
// This else-clause should never be hit, otherwise there is a bug in FORCED_PLACEMENT implementation.
System.Diagnostics.Debug.Assert(false);
// Still handling this case in order to avoid nasty infinite loops.
break;
}
}
}
}
else
{
storedArea = currentArea;
if (nextStoredArea != null)
{
currentArea = nextStoredArea;
currentPageNumber = nextStoredArea.GetPageNumber();
nextStoredArea = null;
}
else
{
if (rendererIsFloat)
{
waitingNextPageRenderers.Add(result.GetOverflowRenderer());
floatOverflowedCompletely = true;
break;
}
currentAreaNeedsToBeUpdated = true;
}
}
}
}
}
renderer = result.GetOverflowRenderer();
if (marginsCollapsingEnabled)
{
marginsCollapseHandler.EndChildMarginsHandling(currentArea.GetBBox());
}
if (currentAreaNeedsToBeUpdated)
{
UpdateCurrentAndInitialArea(result);
}
if (marginsCollapsingEnabled)
{
marginsCollapseHandler = new MarginsCollapseHandler(this, null);
childMarginsInfo = marginsCollapseHandler.StartChildMarginsHandling(renderer, currentArea.GetBBox());
}
clearanceOverflowsToNextPage = clearanceOverflowsToNextPage && FloatingHelper.IsClearanceApplied(waitingNextPageRenderers
, renderer.GetProperty <ClearPropertyValue?>(Property.CLEAR));
}
if (marginsCollapsingEnabled)
{
marginsCollapseHandler.EndChildMarginsHandling(currentArea.GetBBox());
}
if (null != result && null != result.GetSplitRenderer())
{
renderer = result.GetSplitRenderer();
}
// Keep renderer until next element is added for future keep with next adjustments
if (renderer != null && result != null)
{
if (true.Equals(renderer.GetProperty <bool?>(Property.KEEP_WITH_NEXT)))
{
if (true.Equals(renderer.GetProperty <bool?>(Property.FORCED_PLACEMENT)))
{
ILog logger = LogManager.GetLogger(typeof(RootRenderer));
logger.Warn(iText.IO.LogMessageConstant.ELEMENT_WAS_FORCE_PLACED_KEEP_WITH_NEXT_WILL_BE_IGNORED);
ShrinkCurrentAreaAndProcessRenderer(renderer, resultRenderers, result);
}
else
{
keepWithNextHangingRenderer = renderer;
keepWithNextHangingRendererLayoutResult = result;
}
}
else
{
if (result.GetStatus() != LayoutResult.NOTHING)
{
ShrinkCurrentAreaAndProcessRenderer(renderer, resultRenderers, result);
}
}
}
}
for (int i = 0; i < addedPositionedRenderers.Count; i++)
{
positionedRenderers.Add(addedPositionedRenderers[i]);
renderer = positionedRenderers[positionedRenderers.Count - 1];
int?positionedPageNumber = renderer.GetProperty <int?>(Property.PAGE_NUMBER);
if (positionedPageNumber == null)
{
positionedPageNumber = currentPageNumber;
}
LayoutArea layoutArea;
// For position=absolute, if none of the top, bottom, left, right properties are provided,
// the content should be displayed in the flow of the current content, not overlapping it.
// The behavior is just if it would be statically positioned except it does not affect other elements
if (Convert.ToInt32(LayoutPosition.ABSOLUTE).Equals(renderer.GetProperty <int?>(Property.POSITION)) && AbstractRenderer
.NoAbsolutePositionInfo(renderer))
{
layoutArea = new LayoutArea((int)positionedPageNumber, currentArea.GetBBox().Clone());
}
else
{
layoutArea = new LayoutArea((int)positionedPageNumber, initialCurrentArea.GetBBox().Clone());
}
Rectangle fullBbox = layoutArea.GetBBox().Clone();
PreparePositionedRendererAndAreaForLayout(renderer, fullBbox, layoutArea.GetBBox());
renderer.Layout(new PositionedLayoutContext(new LayoutArea(layoutArea.GetPageNumber(), fullBbox), layoutArea
));
if (immediateFlush)
{
FlushSingleRenderer(renderer);
positionedRenderers.JRemoveAt(positionedRenderers.Count - 1);
}
}
}
private LayoutResult InitializeListSymbols(LayoutContext layoutContext)
{
if (!HasOwnProperty(Property.LIST_SYMBOLS_INITIALIZED))
{
IList <IRenderer> symbolRenderers = new List <IRenderer>();
int listItemNum = (int)this.GetProperty <int?>(Property.LIST_START, 1);
for (int i = 0; i < childRenderers.Count; i++)
{
childRenderers[i].SetParent(this);
listItemNum = (childRenderers[i].GetProperty <int?>(Property.LIST_SYMBOL_ORDINAL_VALUE) != null) ? (int)childRenderers
[i].GetProperty <int?>(Property.LIST_SYMBOL_ORDINAL_VALUE) : listItemNum;
IRenderer currentSymbolRenderer = MakeListSymbolRenderer(listItemNum, childRenderers[i]);
if (BaseDirection.RIGHT_TO_LEFT.Equals(this.GetProperty <BaseDirection?>(Property.BASE_DIRECTION)))
{
currentSymbolRenderer.SetProperty(Property.BASE_DIRECTION, BaseDirection.RIGHT_TO_LEFT);
}
LayoutResult listSymbolLayoutResult = null;
if (currentSymbolRenderer != null)
{
++listItemNum;
currentSymbolRenderer.SetParent(childRenderers[i]);
listSymbolLayoutResult = currentSymbolRenderer.Layout(layoutContext);
currentSymbolRenderer.SetParent(null);
}
childRenderers[i].SetParent(null);
bool isForcedPlacement = true.Equals(GetPropertyAsBoolean(Property.FORCED_PLACEMENT));
bool listSymbolNotFit = listSymbolLayoutResult != null && listSymbolLayoutResult.GetStatus() != LayoutResult
.FULL;
// TODO DEVSIX-1001: partially not fitting list symbol not shown at all, however this might be improved
if (listSymbolNotFit && isForcedPlacement)
{
currentSymbolRenderer = null;
}
symbolRenderers.Add(currentSymbolRenderer);
if (listSymbolNotFit && !isForcedPlacement)
{
return(new LayoutResult(LayoutResult.NOTHING, null, null, this, listSymbolLayoutResult.GetCauseOfNothing()
));
}
}
float maxSymbolWidth = 0;
for (int i = 0; i < childRenderers.Count; i++)
{
IRenderer symbolRenderer = symbolRenderers[i];
if (symbolRenderer != null)
{
IRenderer listItemRenderer = childRenderers[i];
if ((ListSymbolPosition)GetListItemOrListProperty(listItemRenderer, this, Property.LIST_SYMBOL_POSITION) !=
ListSymbolPosition.INSIDE)
{
maxSymbolWidth = Math.Max(maxSymbolWidth, symbolRenderer.GetOccupiedArea().GetBBox().GetWidth());
}
}
}
float?symbolIndent = this.GetPropertyAsFloat(Property.LIST_SYMBOL_INDENT);
listItemNum = 0;
foreach (IRenderer childRenderer in childRenderers)
{
childRenderer.SetParent(this);
childRenderer.DeleteOwnProperty(Property.MARGIN_LEFT);
UnitValue marginLeftUV = childRenderer.GetProperty(Property.MARGIN_LEFT, UnitValue.CreatePointValue(0f));
if (!marginLeftUV.IsPointValue())
{
ILog logger = LogManager.GetLogger(typeof(iText.Layout.Renderer.ListRenderer));
logger.Error(MessageFormatUtil.Format(iText.IO.LogMessageConstant.PROPERTY_IN_PERCENTS_NOT_SUPPORTED, Property
.MARGIN_LEFT));
}
float calculatedMargin = marginLeftUV.GetValue();
if ((ListSymbolPosition)GetListItemOrListProperty(childRenderer, this, Property.LIST_SYMBOL_POSITION) == ListSymbolPosition
.DEFAULT)
{
calculatedMargin += maxSymbolWidth + (float)(symbolIndent != null ? symbolIndent : 0f);
}
childRenderer.SetProperty(Property.MARGIN_LEFT, UnitValue.CreatePointValue(calculatedMargin));
IRenderer symbolRenderer = symbolRenderers[listItemNum++];
((ListItemRenderer)childRenderer).AddSymbolRenderer(symbolRenderer, maxSymbolWidth);
if (symbolRenderer != null)
{
LayoutTaggingHelper taggingHelper = this.GetProperty <LayoutTaggingHelper>(Property.TAGGING_HELPER);
if (taggingHelper != null)
{
if (symbolRenderer is LineRenderer)
{
taggingHelper.SetRoleHint(symbolRenderer.GetChildRenderers()[1], StandardRoles.LBL);
}
else
{
taggingHelper.SetRoleHint(symbolRenderer, StandardRoles.LBL);
}
}
}
}
}
return(null);
}
public override void Draw(DrawContext drawContext)
{
if (occupiedArea == null)
{
ILog logger = LogManager.GetLogger(typeof(iText.Layout.Renderer.ImageRenderer));
logger.Error(MessageFormatUtil.Format(iText.IO.LogMessageConstant.OCCUPIED_AREA_HAS_NOT_BEEN_INITIALIZED,
"Drawing won't be performed."));
return;
}
bool isRelativePosition = IsRelativePosition();
if (isRelativePosition)
{
ApplyRelativePositioningTranslation(false);
}
bool isTagged = drawContext.IsTaggingEnabled();
LayoutTaggingHelper taggingHelper = null;
bool isArtifact = false;
TagTreePointer tagPointer = null;
if (isTagged)
{
taggingHelper = this.GetProperty <LayoutTaggingHelper>(Property.TAGGING_HELPER);
if (taggingHelper == null)
{
isArtifact = true;
}
else
{
isArtifact = taggingHelper.IsArtifact(this);
if (!isArtifact)
{
tagPointer = taggingHelper.UseAutoTaggingPointerAndRememberItsPosition(this);
if (taggingHelper.CreateTag(this, tagPointer))
{
tagPointer.GetProperties().AddAttributes(0, AccessibleAttributesApplier.GetLayoutAttributes(this, tagPointer
));
}
}
}
}
BeginTransformationIfApplied(drawContext.GetCanvas());
float?angle = this.GetPropertyAsFloat(Property.ROTATION_ANGLE);
if (angle != null)
{
drawContext.GetCanvas().SaveState();
ApplyConcatMatrix(drawContext, angle);
}
base.Draw(drawContext);
bool clipImageInAViewOfBorderRadius = ClipBackgroundArea(drawContext, ApplyMargins(GetOccupiedAreaBBox(),
false), true);
ApplyMargins(occupiedArea.GetBBox(), false);
ApplyBorderBox(occupiedArea.GetBBox(), GetBorders(), false);
if (fixedYPosition == null)
{
fixedYPosition = occupiedArea.GetBBox().GetY() + pivotY;
}
if (fixedXPosition == null)
{
fixedXPosition = occupiedArea.GetBBox().GetX();
}
if (angle != null)
{
fixedXPosition += rotatedDeltaX;
fixedYPosition -= rotatedDeltaY;
drawContext.GetCanvas().RestoreState();
}
PdfCanvas canvas = drawContext.GetCanvas();
if (isTagged)
{
if (isArtifact)
{
canvas.OpenTag(new CanvasArtifact());
}
else
{
canvas.OpenTag(tagPointer.GetTagReference());
}
}
PdfXObject xObject = ((Image)(GetModelElement())).GetXObject();
BeginElementOpacityApplying(drawContext);
canvas.AddXObject(xObject, matrix[0], matrix[1], matrix[2], matrix[3], (float)fixedXPosition + deltaX, (float
)fixedYPosition);
EndElementOpacityApplying(drawContext);
EndTransformationIfApplied(drawContext.GetCanvas());
if (true.Equals(GetPropertyAsBoolean(Property.FLUSH_ON_DRAW)))
{
xObject.Flush();
}
if (isTagged)
{
canvas.CloseTag();
}
if (clipImageInAViewOfBorderRadius)
{
canvas.RestoreState();
}
if (isRelativePosition)
{
ApplyRelativePositioningTranslation(true);
}
ApplyBorderBox(occupiedArea.GetBBox(), GetBorders(), true);
ApplyMargins(occupiedArea.GetBBox(), true);
if (isTagged && !isArtifact)
{
taggingHelper.FinishTaggingHint(this);
taggingHelper.RestoreAutoTaggingPointerPosition(this);
}
}
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);
}
}
}
private LayoutTaggingHelper InitTaggingHelperIfNeeded()
{
return(defaultLayoutTaggingHelper == null && pdfDocument.IsTagged() ? defaultLayoutTaggingHelper = new LayoutTaggingHelper
(pdfDocument, immediateFlush) : defaultLayoutTaggingHelper);
}
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();
}
