private void DrawSimulatedDiv(PdfPage page, IDictionary <int, Object> styles, float[] margins, bool drawBackground
, int pageNumber, bool recalculateBodyAreaForContentSize)
{
Div pageBordersSimulation = new Div().SetFillAvailableArea(true);
foreach (KeyValuePair <int, Object> entry in styles)
{
if ((entry.Key == Property.BACKGROUND || entry.Key == Property.BACKGROUND_IMAGE) && !drawBackground)
{
continue;
}
pageBordersSimulation.SetProperty(entry.Key, entry.Value);
}
pageBordersSimulation.GetAccessibilityProperties().SetRole(StandardRoles.ARTIFACT);
Rectangle backgroundArea = new Rectangle(page.GetTrimBox()).ApplyMargins(margins[0], margins[1], margins[2
], margins[3], false);
if (recalculateBodyAreaForContentSize)
{
if (pageStylesPropertiesMap.Get(pageNumber).lowestAndHighest == null)
{
return;
}
HtmlBodyStylesApplierHandler.LowestAndHighest lowestAndHighest = pageStylesPropertiesMap.Get(pageNumber).lowestAndHighest;
RecalculateBackgroundAreaForBody(backgroundArea, pageBordersSimulation, lowestAndHighest);
}
if (pdfCanvas == null)
{
pdfCanvas = new PdfCanvas(page.NewContentStreamBefore(), page.GetResources(), page.GetDocument());
}
iText.Layout.Canvas canvas = new iText.Layout.Canvas(pdfCanvas, backgroundArea);
canvas.EnableAutoTagging(page);
canvas.Add(pageBordersSimulation);
canvas.Close();
}
private void UpdateLowestAndHighestPoints(Rectangle rectangle, int page)
{
if (!pageStylesPropertiesMap.ContainsKey(page))
{
return;
}
HtmlBodyStylesApplierHandler.LowestAndHighest currentPagePoints = pageStylesPropertiesMap.Get(page).lowestAndHighest;
if (currentPagePoints == null)
{
pageStylesPropertiesMap.Get(page).lowestAndHighest = new HtmlBodyStylesApplierHandler.LowestAndHighest(rectangle
.GetY(), rectangle.GetY() + rectangle.GetHeight());
}
else
{
float newLowestPoint = rectangle.GetY();
float newHighestPoint = rectangle.GetY() + rectangle.GetHeight();
currentPagePoints.lowest = Math.Min(newLowestPoint, currentPagePoints.lowest);
currentPagePoints.highest = Math.Max(newHighestPoint, currentPagePoints.highest);
}
}
private void RecalculateBackgroundAreaForBody(Rectangle backgroundArea, Div pageBordersSimulation, HtmlBodyStylesApplierHandler.LowestAndHighest
lowestAndHighest)
{
UnitValue marginTop = pageBordersSimulation.GetOwnProperty <UnitValue>(Property.MARGIN_TOP);
UnitValue marginBottom = pageBordersSimulation.GetOwnProperty <UnitValue>(Property.MARGIN_BOTTOM);
float marginTopWidth = marginTop == null ? 0 : marginTop.GetValue();
float marginBottomWidth = marginBottom == null ? 0 : marginBottom.GetValue();
Border borderTop = pageBordersSimulation.GetOwnProperty <Border>(Property.BORDER_TOP);
Border borderBottom = pageBordersSimulation.GetOwnProperty <Border>(Property.BORDER_BOTTOM);
float borderTopWidth = borderTop == null ? 0 : borderTop.GetWidth();
float borderBottomWidth = borderBottom == null ? 0 : borderBottom.GetWidth();
UnitValue paddingTop = pageBordersSimulation.GetOwnProperty <UnitValue>(Property.PADDING_TOP);
UnitValue paddingBottom = pageBordersSimulation.GetOwnProperty <UnitValue>(Property.PADDING_BOTTOM);
float paddingTopWidth = paddingTop == null ? 0 : paddingTop.GetValue();
float paddingBottomWidth = paddingBottom == null ? 0 : paddingBottom.GetValue();
float oldHighest = backgroundArea.GetY() + backgroundArea.GetHeight();
if (lowestAndHighest.lowest >= backgroundArea.GetY())
{
backgroundArea.SetY(lowestAndHighest.lowest - paddingBottomWidth - borderBottomWidth - marginBottomWidth);
}
float newHighest = lowestAndHighest.highest - lowestAndHighest.lowest + paddingTopWidth + paddingBottomWidth
+ borderTopWidth + borderBottomWidth + marginTopWidth + marginBottomWidth + backgroundArea.GetY();
if (newHighest <= oldHighest)
{
backgroundArea.SetHeight(newHighest - backgroundArea.GetY());
}
}
