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HtmlConverter.cs
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HtmlConverter.cs
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/***************************************************************************
Copyright (c) Microsoft Corporation 2012-2014.
This code is licensed using the Microsoft Public License (Ms-PL). The text of the license can be found here:
http://www.microsoft.com/resources/sharedsource/licensingbasics/publiclicense.mspx
Published at http://OpenXmlDeveloper.org
Resource Center and Documentation: http://openxmldeveloper.org/wiki/w/wiki/powertools-for-open-xml.aspx
Developer: Eric White
Blog: http://www.ericwhite.com
Twitter: @EricWhiteDev
Email: [email protected]
Version: 2.7.03
* Support for RTL languages.
Version: 2.7.00
* Uses new ListItemRetriever.
* Better support for RTL languages.
Version: 2.6.01
* Add languageCultureName parameter to GetListItemText methods. This enables a single implementation to handle
more than one language/culture where appropriate.
Version: 2.6.00
* Re-write to support styles and rich content
***************************************************************************/
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using DocumentFormat.OpenXml.Packaging;
// 200e lrm - LTR
// 200f rlm - RTL
// todo need to set the HTTP "Content-Language" header, for instance:
// Content-Language: en-US
// Content-Language: fr-FR
namespace OpenXmlPowerTools
{
public partial class WmlDocument : OpenXmlPowerToolsDocument
{
public XElement ConvertToHtml(HtmlConverterSettings htmlConverterSettings)
{
return HtmlConverter.ConvertToHtml(this, htmlConverterSettings);
}
}
public class HtmlConverterSettings
{
public string PageTitle;
public string CssClassPrefix;
public bool FabricateCssClasses;
public string AdditionalCss;
public bool RestrictToSupportedLanguages;
public bool RestrictToSupportedNumberingFormats;
public Dictionary<string, Func<string, int, string, string>> ListItemImplementations;
public Func<ImageInfo, XElement> ImageHandler;
public HtmlConverterSettings()
{
PageTitle = "";
CssClassPrefix = "pt-";
FabricateCssClasses = true;
RestrictToSupportedLanguages = false;
RestrictToSupportedNumberingFormats = false;
ListItemImplementations = new Dictionary<string, Func<string, int, string, string>>()
{
{"fr-FR", ListItemTextGetter_fr_FR.GetListItemText},
{"tr-TR", ListItemTextGetter_tr_TR.GetListItemText},
{"ru-RU", ListItemTextGetter_ru_RU.GetListItemText},
{"sv-SE", ListItemTextGetter_sv_SE.GetListItemText},
};
}
}
public class ImageInfo
{
public Bitmap Bitmap;
public XAttribute ImgStyleAttribute;
public string ContentType;
public XElement DrawingElement;
public string AltText;
public static int EmusPerInch = 914400;
public static int EmusPerCm = 360000;
}
public static class HtmlConverter
{
public static XElement ConvertToHtml(WmlDocument doc, HtmlConverterSettings htmlConverterSettings)
{
using (OpenXmlMemoryStreamDocument streamDoc = new OpenXmlMemoryStreamDocument(doc))
{
using (WordprocessingDocument document = streamDoc.GetWordprocessingDocument())
{
return ConvertToHtml(document, htmlConverterSettings);
}
}
}
public static XElement ConvertToHtml(WordprocessingDocument wordDoc, HtmlConverterSettings htmlConverterSettings)
{
InitEntityMap();
RevisionAccepter.AcceptRevisions(wordDoc);
SimplifyMarkupSettings simplifyMarkupSettings = new SimplifyMarkupSettings
{
RemoveComments = true,
RemoveContentControls = true,
RemoveEndAndFootNotes = true,
RemoveFieldCodes = false,
RemoveLastRenderedPageBreak = true,
RemovePermissions = true,
RemoveProof = true,
RemoveRsidInfo = true,
RemoveSmartTags = true,
RemoveSoftHyphens = true,
RemoveGoBackBookmark = true,
ReplaceTabsWithSpaces = false,
};
MarkupSimplifier.SimplifyMarkup(wordDoc, simplifyMarkupSettings);
FormattingAssemblerSettings formattingAssemblerSettings = new FormattingAssemblerSettings
{
RemoveStyleNamesFromParagraphAndRunProperties = false,
ClearStyles = false,
RestrictToSupportedLanguages = htmlConverterSettings.RestrictToSupportedLanguages,
RestrictToSupportedNumberingFormats = htmlConverterSettings.RestrictToSupportedNumberingFormats,
CreateHtmlConverterAnnotationAttributes = true,
OrderElementsPerStandard = false,
ListItemRetrieverSettings = new ListItemRetrieverSettings()
{
ListItemTextImplementations = htmlConverterSettings.ListItemImplementations,
},
};
FormattingAssembler.AssembleFormatting(wordDoc, formattingAssemblerSettings);
InsertAppropriateNonbreakingSpaces(wordDoc);
CalculateSpanWidthForTabs(wordDoc);
ReverseTableBordersForRtlTables(wordDoc);
AdjustTableBorders(wordDoc);
XElement rootElement = wordDoc.MainDocumentPart.GetXDocument().Root;
FieldRetriever.AnnotateWithFieldInfo(wordDoc.MainDocumentPart);
AnnotateForSections(wordDoc);
XElement xhtml = (XElement)ConvertToHtmlTransform(wordDoc, htmlConverterSettings,
rootElement, false, 0m);
ReifyStylesAndClasses(htmlConverterSettings, xhtml);
// Note: the xhtml returned by ConvertToHtmlTransform contains objects of type
// XEntity. PtOpenXmlUtil.cs define the XEntity class. See
// http://blogs.msdn.com/ericwhite/archive/2010/01/21/writing-entity-references-using-linq-to-xml.aspx
// for detailed explanation.
//
// If you further transform the XML tree returned by ConvertToHtmlTransform, you
// must do it correctly, or entities will not be serialized properly.
return xhtml;
}
private static void ReverseTableBordersForRtlTables(WordprocessingDocument wordDoc)
{
XDocument xd = wordDoc.MainDocumentPart.GetXDocument();
foreach (var tbl in xd.Descendants(W.tbl))
{
var bidiVisual = tbl.Elements(W.tblPr).Elements(W.bidiVisual).FirstOrDefault();
if (bidiVisual == null)
continue;
var tblBorders = tbl.Elements(W.tblPr).Elements(W.tblBorders).FirstOrDefault();
if (tblBorders != null)
{
XElement left = null;
XElement right = null;
if (tblBorders.Element(W.left) != null)
left = new XElement(W.right,
tblBorders.Element(W.left).Attributes());
if (tblBorders.Element(W.right) != null)
right = new XElement(W.left,
tblBorders.Element(W.right).Attributes());
var newTblBorders = new XElement(W.tblBorders,
tblBorders.Element(W.top),
left,
tblBorders.Element(W.bottom),
right);
tblBorders.ReplaceWith(newTblBorders);
}
foreach (var tc in tbl.Elements(W.tr).Elements(W.tc))
{
var tcBorders = tc.Elements(W.tcPr).Elements(W.tcBorders).FirstOrDefault();
if (tcBorders != null)
{
XElement left = null;
XElement right = null;
if (tcBorders.Element(W.left) != null)
left = new XElement(W.right,
tcBorders.Element(W.left).Attributes());
if (tcBorders.Element(W.right) != null)
right = new XElement(W.left,
tcBorders.Element(W.right).Attributes());
var newtcBorders = new XElement(W.tcBorders,
tcBorders.Element(W.top),
left,
tcBorders.Element(W.bottom),
right);
tcBorders.ReplaceWith(newtcBorders);
}
}
}
}
private static void ReifyStylesAndClasses(HtmlConverterSettings htmlConverterSettings, XElement xhtml)
{
if (htmlConverterSettings.FabricateCssClasses)
{
var usedCssClassNames = new HashSet<string>();
var elementsThatNeedClasses = xhtml
.DescendantsAndSelf()
.Select(d => new
{
Element = d,
Styles = d.Annotation<Dictionary<string, string>>(),
})
.Where(z => z.Styles != null);
var augmented = elementsThatNeedClasses
.Select(p => new
{
Element = p.Element,
Styles = p.Styles,
StylesString = p.Element.Name.LocalName + "|" + p.Styles.OrderBy(k => k.Key).Select(s => string.Format("{0}:{1};", s.Key, s.Value)).StringConcatenate(),
})
.GroupBy(p => p.StylesString)
.ToList();
int classCounter = 1000000;
var sb = new StringBuilder();
sb.Append(Environment.NewLine);
foreach (var grp in augmented)
{
string classNameToUse;
var firstOne = grp.First();
var styles = firstOne.Styles;
if (styles.ContainsKey("PtStyleName"))
{
classNameToUse = htmlConverterSettings.CssClassPrefix + styles["PtStyleName"];
if (usedCssClassNames.Contains(classNameToUse))
{
classNameToUse = htmlConverterSettings.CssClassPrefix +
styles["PtStyleName"] + "-" +
classCounter.ToString().Substring(1);
classCounter++;
}
}
else
{
classNameToUse = htmlConverterSettings.CssClassPrefix +
classCounter.ToString().Substring(1);
classCounter++;
}
usedCssClassNames.Add(classNameToUse);
sb.Append(firstOne.Element.Name.LocalName + "." + classNameToUse + " {" + Environment.NewLine);
foreach (var st in firstOne.Styles.Where(s => s.Key != "PtStyleName"))
{
var s = " " + st.Key + ":" + st.Value + ";" + Environment.NewLine;
sb.Append(s);
}
sb.Append("}" + Environment.NewLine);
var classAtt = new XAttribute("class", classNameToUse);
foreach (var gc in grp)
gc.Element.Add(classAtt);
}
var styleElement = xhtml
.Descendants(Xhtml.style)
.FirstOrDefault();
if (styleElement != null)
styleElement.Value = sb.ToString() + htmlConverterSettings.AdditionalCss;
else
{
styleElement = new XElement(Xhtml.style, sb.ToString() + htmlConverterSettings.AdditionalCss);
var head = xhtml.Element(Xhtml.head);
if (head != null)
head.Add(styleElement);
}
}
else
{
foreach (var d in xhtml.DescendantsAndSelf())
{
var style = d.Annotation<Dictionary<string, string>>();
if (style == null)
continue;
var styleValue =
style
.Where(p => p.Key != "PtStyleName")
.OrderBy(p => p.Key)
.Select(e => string.Format("{0}: {1};", e.Key, e.Value))
.StringConcatenate();
XAttribute st = new XAttribute("style", styleValue);
if (d.Attribute("style") != null)
d.Attribute("style").Value += styleValue;
else
d.Add(st);
}
}
}
private static object ConvertToHtmlTransform(WordprocessingDocument wordDoc,
HtmlConverterSettings settings, XNode node,
bool suppressTrailingWhiteSpace,
decimal currentMarginLeft)
{
XElement element = node as XElement;
if (element != null)
{
if (element.Name == W.document)
return new XElement(Xhtml.html,
new XElement(Xhtml.head,
new XElement(Xhtml.meta,
new XAttribute("http-equiv", "Content-Type"),
new XAttribute("content", "text/html; charset=utf-8")),
new XElement(Xhtml.meta,
new XAttribute("name", "Generator"),
new XAttribute("content", "PowerTools for Open XML")),
settings.PageTitle != null ? new XElement(Xhtml.title,
new XText(settings.PageTitle)) : null
),
element.Elements().Select(e => ConvertToHtmlTransform(wordDoc, settings, e, false, currentMarginLeft))
);
// Transform the w:body element to the XHTML h:body element.
if (element.Name == W.body)
{
var sectionDivContent = new XElement(Xhtml.body,
CreateSectionDivs(wordDoc, settings, element));
return sectionDivContent;
}
if (element.Name == W.p)
{
var bidi = element
.Elements(W.pPr)
.Elements(W.bidi)
.Where(b => b.Attribute(W.val) == null || b.Attribute(W.val).ToBoolean() == true)
.FirstOrDefault();
var isBidi = bidi != null;
string styleId = (string)element.Elements(W.pPr).Elements(W.pStyle)
.Attributes(W.val).FirstOrDefault();
if (styleId != null)
{
XElement style = wordDoc.MainDocumentPart.StyleDefinitionsPart
.GetXDocument().Root.Elements(W.style)
.Where(s => (string)s.Attribute(W.styleId) == styleId)
.FirstOrDefault();
if (style != null)
{
int? outlineLevel = (int?)style.Elements(W.pPr)
.Elements(W.outlineLvl).Attributes(W.val).FirstOrDefault();
if (outlineLevel != null && outlineLevel <= 5)
{
XName elementName = Xhtml.xhtml + string.Format("h{0}",
outlineLevel + 1);
return ConvertParagraph(wordDoc, settings, element, elementName, suppressTrailingWhiteSpace, currentMarginLeft, isBidi);
}
else
{
XName elementName = Xhtml.p;
var o = ConvertParagraph(wordDoc, settings, element, elementName, suppressTrailingWhiteSpace, currentMarginLeft, isBidi);
return o;
}
}
}
else
{
XName elementName = Xhtml.p;
var o = ConvertParagraph(wordDoc, settings, element, elementName, suppressTrailingWhiteSpace, currentMarginLeft, isBidi);
return o;
}
}
// Transform hyperlinks to the XHTML h:A element.
if (element.Name == W.hyperlink && element.Attribute(R.id) != null)
{
try
{
return new XElement(Xhtml.A,
new XAttribute("href",
wordDoc.MainDocumentPart
.HyperlinkRelationships
.Where(x => x.Id == (string)element.Attribute(R.id))
.First()
.Uri
),
element.Elements(W.r).Select(run => ConvertRun(wordDoc, settings, run))
);
}
catch (UriFormatException)
{
return element.Elements().Select(e => ConvertToHtmlTransform(wordDoc, settings, e, false, currentMarginLeft));
}
}
// Transform hyperlinks to bookmarks to the XHTML h:A element.
if (element.Name == W.hyperlink && element.Attribute(W.anchor) != null)
{
var style = new Dictionary<string, string>();
var a = new XElement(Xhtml.A,
new XAttribute("href", "#" + (string)element.Attribute(W.anchor)),
element
.Elements(W.r)
.Select(run => ConvertRun(wordDoc, settings, run)));
style.Add("text-decoration", "none");
a.AddAnnotation(style);
return a;
}
// Transform contents of runs.
if (element.Name == W.r)
return ConvertRun(wordDoc, settings, element);
// Transform w:bookmarkStart into anchor
if (element.Name == W.bookmarkStart)
{
var name = (string)element.Attribute(W.name);
if (name != null)
{
var style = new Dictionary<string, string>();
var a = new XElement(Xhtml.A,
new XAttribute("id", name),
new XText(""));
style.Add("text-decoration", "none");
a.AddAnnotation(style);
return a;
}
}
// Transform every w:t element to a text node.
if (element.Name == W.t)
{
var textWithEntities = ConvertEntities(element.Value);
return textWithEntities;
}
// Transform symbols to spans
if (element.Name == W.sym)
{
var cs = (string)element.Attribute(W._char);
var c = Convert.ToInt32(cs, 16);
var symbolSpan = new XElement(Xhtml.span, new XEntity(string.Format("#{0}", ((int)c).ToString())));
return symbolSpan;
}
// Transform tabs that have the pt:TabWidth attribute set
if (element.Name == W.tab)
{
var tabWidthAtt = element.Attribute(PtOpenXml.TabWidth);
if (tabWidthAtt != null)
{
var leader = (string)element.Attribute(PtOpenXml.Leader);
var tabWidth = (decimal)tabWidthAtt;
var style = new Dictionary<string, string>();
XElement span;
if (leader != null)
{
var leaderChar = ".";
if (leader == "hyphen")
leaderChar = "-";
else if (leader == "dot")
leaderChar = ".";
else if (leader == "underscore")
leaderChar = "_";
var runContainingTabToReplace = element.Ancestors(W.r).First();
var fontNameAtt = runContainingTabToReplace.Attribute(PtOpenXml.pt + "FontName");
if (fontNameAtt == null)
fontNameAtt = runContainingTabToReplace.Ancestors(W.p).First()
.Attribute(PtOpenXml.pt + "FontName");
var dummyRun = new XElement(W.r,
fontNameAtt,
runContainingTabToReplace.Elements(W.rPr),
new XElement(W.t, leaderChar));
var widthOfLeaderChar = CalcWidthOfRunInTwips(dummyRun);
bool forceArial = false;
if (widthOfLeaderChar == 0)
{
dummyRun = new XElement(W.r,
new XAttribute(PtOpenXml.FontName, "Arial"),
runContainingTabToReplace.Elements(W.rPr),
new XElement(W.t, leaderChar));
widthOfLeaderChar = CalcWidthOfRunInTwips(dummyRun);
forceArial = true;
}
if (widthOfLeaderChar != 0)
{
var numberOfLeaderChars = (int)(Math.Floor((tabWidth * 1440) / widthOfLeaderChar));
if (numberOfLeaderChars < 0)
numberOfLeaderChars = 0;
span = new XElement(Xhtml.span,
" " + "".PadRight(numberOfLeaderChars, leaderChar[0]) + " ");
style.Add("margin", "0 0 0 0");
style.Add("padding", "0 0 0 0");
style.Add("width", string.Format("{0:0.00}in", tabWidth));
style.Add("text-align", "center");
if (forceArial)
style.Add("font-family", "Arial");
}
else
{
span = new XElement(Xhtml.span, " ");
style.Add("margin", "0 0 0 0");
style.Add("padding", "0 0 0 0");
style.Add("width", string.Format("{0:0.00}in", tabWidth));
style.Add("text-align", "center");
if (leader == "underscore")
{
style.Add("text-decoration", "underline");
}
}
}
else
{
#if false
var bidi = element
.Ancestors(W.p)
.Take(1)
.Elements(W.pPr)
.Elements(W.bidi)
.Where(b => b.Attribute(W.val) == null || b.Attribute(W.val).ToBoolean() == true)
.FirstOrDefault();
var isBidi = bidi != null;
if (isBidi)
span = new XElement(Xhtml.span, new XEntity("#x200f")); // RLM
else
span = new XElement(Xhtml.span, new XEntity("#x200e")); // LRM
#else
span = new XElement(Xhtml.span, new XEntity("nbsp"));
#endif
style.Add("margin", string.Format("0 0 0 {0:0.00}in", tabWidth));
style.Add("padding", "0 0 0 0");
}
span.AddAnnotation(style);
return span;
}
}
// Transform w:br to h:br.
if (element.Name == W.br || element.Name == W.cr)
{
XElement span = null;
var tabWidth = (decimal?)element.Attribute(PtOpenXml.TabWidth);
if (tabWidth != null)
{
span = new XElement(Xhtml.span);
var style = new Dictionary<string, string>();
style.Add("margin", string.Format("0 0 0 {0:0.00}in", tabWidth));
style.Add("padding", "0 0 0 0");
span.AddAnnotation(style);
}
var paragraph = element.Ancestors(W.p).FirstOrDefault();
bool isBidi = false;
if (paragraph != null)
{
var bidi = paragraph
.Elements(W.pPr)
.Elements(W.bidi)
.Where(b => b.Attribute(W.val) == null || b.Attribute(W.val).ToBoolean() == true)
.FirstOrDefault();
isBidi = bidi != null;
}
var br = new XElement(Xhtml.br);
XEntity zeroWidthChar = null;
if (isBidi)
zeroWidthChar = new XEntity("#x200f"); // RLM
else
zeroWidthChar = new XEntity("#x200e"); // LRM
return new object[] {
br,
zeroWidthChar,
span,
};
}
// Transform w:noBreakHyphen to '-'
if (element.Name == W.noBreakHyphen)
return new XText("-");
// Transform w:tbl to h:tbl.
if (element.Name == W.tbl)
{
var style = new Dictionary<string, string>();
style.AddIfMissing("border-collapse", "collapse");
style.AddIfMissing("border", "none");
var bidiVisual = element.Elements(W.tblPr).Elements(W.bidiVisual).FirstOrDefault();
var tblW = element.Elements(W.tblPr).Elements(W.tblW).FirstOrDefault();
if (tblW != null)
{
var type = (string)tblW.Attribute(W.type);
if (type != null && type == "pct")
{
var w = (int)tblW.Attribute(W._w);
style.AddIfMissing("width", (w / 50).ToString() + "%");
}
}
var tblInd = element.Elements(W.tblPr).Elements(W.tblInd).FirstOrDefault();
if (tblInd != null)
{
var tblIndType = (string)tblInd.Attribute(W.type);
if (tblIndType != null)
{
if (tblIndType == "dxa")
{
var width = (decimal?)tblInd.Attribute(W._w);
if (width != null)
{
style.AddIfMissing("margin-left", string.Format("{0}pt", width / 20m));
}
}
}
}
XAttribute tableDirection = null;
if (bidiVisual != null)
{
tableDirection = new XAttribute("dir", "rtl");
}
else
{
tableDirection = new XAttribute("dir", "ltr");
}
style.AddIfMissing("margin-bottom", ".001pt");
var table = new XElement(Xhtml.table,
new XAttribute("border", "1"),
new XAttribute("cellspacing", 0),
new XAttribute("cellpadding", 0),
tableDirection,
element.Elements().Select(e => ConvertToHtmlTransform(wordDoc, settings, e, false, currentMarginLeft)));
table.AddAnnotation(style);
var jc = (string)element.Elements(W.tblPr).Elements(W.jc).Attributes(W.val).FirstOrDefault();
if (jc == null)
jc = "left";
XAttribute dir = null;
XAttribute jcToUse = null;
if (bidiVisual != null)
{
dir = new XAttribute("dir", "rtl");
if (jc == "left")
jcToUse = new XAttribute("align", "right");
else if (jc == "right")
jcToUse = new XAttribute("align", "left");
else if (jc == "center")
jcToUse = new XAttribute("align", "center");
}
else
{
jcToUse = new XAttribute("align", jc);
}
var tableDiv = new XElement(Xhtml.div,
dir,
jcToUse,
table);
return tableDiv;
}
// Transform w:tr to h:tr.
if (element.Name == W.tr)
{
var style = new Dictionary<string, string>();
int? trHeight = (int?)element.Elements(W.trPr).Elements(W.trHeight).Attributes(W.val).FirstOrDefault();
if (trHeight != null)
style.AddIfMissing("height", string.Format("{0}in", (decimal)trHeight / 1440m));
var htmlRow = new XElement(Xhtml.tr,
element.Elements().Select(e => ConvertToHtmlTransform(wordDoc, settings, e, false, currentMarginLeft)));
if (style.Any())
htmlRow.AddAnnotation(style);
return htmlRow;
}
// Transform w:tc to h:td.
if (element.Name == W.tc)
{
var style = new Dictionary<string, string>();
XAttribute colSpan = null;
XAttribute rowSpan = null;
var tcPr = element.Element(W.tcPr);
if (tcPr != null)
{
if ((string)tcPr.Elements(W.vMerge).Attributes(W.val).FirstOrDefault() == "restart")
{
var currentRow = element.Parent.ElementsBeforeSelf(W.tr).Count();
var currentCell = element.ElementsBeforeSelf(W.tc).Count();
var tbl = element.Parent.Parent;
int rowSpanCount = 1;
currentRow += 1;
while (true)
{
var row = tbl.Elements(W.tr).Skip(currentRow).FirstOrDefault();
if (row == null)
break;
var cell2 = row.Elements(W.tc).Skip(currentCell).FirstOrDefault();
if (cell2 == null)
break;
if (cell2.Elements(W.tcPr).Elements(W.vMerge).FirstOrDefault() == null)
break;
if ((string)cell2.Elements(W.tcPr).Elements(W.vMerge).Attributes(W.val).FirstOrDefault() == "restart")
break;
currentRow += 1;
rowSpanCount += 1;
}
rowSpan = new XAttribute("rowspan", rowSpanCount);
}
if (tcPr.Element(W.vMerge) != null && (string)tcPr.Elements(W.vMerge).Attributes(W.val).FirstOrDefault() != "restart")
return null;
if (tcPr.Element(W.vAlign) != null)
{
var vAlignVal = (string)tcPr.Elements(W.vAlign).Attributes(W.val).FirstOrDefault();
if (vAlignVal == "top")
style.AddIfMissing("vertical-align", "top");
else if (vAlignVal == "center")
style.AddIfMissing("vertical-align", "middle");
else if (vAlignVal == "bottom")
style.AddIfMissing("vertical-align", "bottom");
else
style.AddIfMissing("vertical-align", "middle");
}
style.AddIfMissing("vertical-align", "top");
if ((string)tcPr.Elements(W.tcW).Attributes(W.type).FirstOrDefault() == "dxa")
{
decimal width = (int)tcPr.Elements(W.tcW).Attributes(W._w).FirstOrDefault();
style.AddIfMissing("width", string.Format("{0}pt", width / 20m));
}
if ((string)tcPr.Elements(W.tcW).Attributes(W.type).FirstOrDefault() == "pct")
{
decimal width = (int)tcPr.Elements(W.tcW).Attributes(W._w).FirstOrDefault();
style.AddIfMissing("width", string.Format("{0:0.0}%", width / 50m));
}
var tcBorders = tcPr.Element(W.tcBorders);
GenerateBorderStyle(tcBorders, W.top, style, BorderType.Cell);
GenerateBorderStyle(tcBorders, W.right, style, BorderType.Cell);
GenerateBorderStyle(tcBorders, W.bottom, style, BorderType.Cell);
GenerateBorderStyle(tcBorders, W.left, style, BorderType.Cell);
CreateStyleFromShd(style, tcPr.Element(W.shd));
var gridSpan = (int?)tcPr.Elements(W.gridSpan).Attributes(W.val).Select(a => (int?)a).FirstOrDefault();
if (gridSpan != null)
colSpan = new XAttribute("colspan", (int)gridSpan);
}
style.AddIfMissing("padding-top", "0in");
style.AddIfMissing("padding-bottom", "0in");
var cell = new XElement(Xhtml.td,
rowSpan,
colSpan,
CreateBorderDivs(wordDoc, settings, element.Elements()));
cell.AddAnnotation(style);
return cell;
}
// Transform images
if (element.Name == W.drawing || element.Name == W.pict || element.Name == W._object)
{
if (settings.ImageHandler == null)
return null;
return ProcessImage(wordDoc, element, settings.ImageHandler);
}
if (element.Name == W.sdt)
{
var relevantAncestors = element.Ancestors().TakeWhile(a => a.Name != W.txbxContent);
var isRunLevelContentControl = relevantAncestors.Any(a => a.Name == W.p);
if (isRunLevelContentControl)
{
var o = element.Element(W.sdtContent).Elements().Select(e => ConvertToHtmlTransform(wordDoc, settings, e, false, currentMarginLeft))
.ToList();
return o;
}
else
{
var o = CreateBorderDivs(wordDoc, settings, element.Element(W.sdtContent).Elements());
return o;
}
}
if (element.Name == W.smartTag || element.Name == W.fldSimple)
{
var o = CreateBorderDivs(wordDoc, settings, element.Elements());
return o;
}
return null;
}
return null;
}
private static object CreateSectionDivs(WordprocessingDocument wordDoc, HtmlConverterSettings settings, XElement element)
{
// note: when building a paging html converter, need to attend to new sections with page breaks here.
// This code conflates adjacent sections if they have identical formatting, which is not an issue
// for the non-paging transform.
var groupedIntoDivs = element
.Elements()
.GroupAdjacent(e => {
return e.Annotation<SectionAnnotation>().SectionElement.ToString();
});
// note: when creating a paging html converter, need to pay attention to w:rtlGutter element.
var divList = groupedIntoDivs
.Select(g =>
{
var sectPr = g.First().Annotation<SectionAnnotation>();
var bidi = sectPr
.SectionElement
.Elements(W.bidi)
.Where(b => b.Attribute(W.val) == null || b.Attribute(W.val).ToBoolean() == true)
.FirstOrDefault();
if (bidi == null)
{
var div = new XElement(Xhtml.div, CreateBorderDivs(wordDoc, settings, g));
return div;
}
else
{
var div = new XElement(Xhtml.div,
new XAttribute("dir", "rtl"),
CreateBorderDivs(wordDoc, settings, g));
return div;
}
});
return divList;
}
private enum BorderType
{
Paragraph,
Cell,
};
/*
* Notes on line spacing
*
* the w:line and w:lineRule attributes control spacing between lines - including between lines within a paragraph
*
* If w:spacing w:lineRule="auto" then
* w:spacing w:line is a percentage where 240 == 100%
*
* (line value / 240) * 100 = percentage of line
*
* If w:spacing w:lineRule="exact" or w:lineRule="atLeast" then
* w:spacing w:line is in twips
* 1440 = exactly one inch from line to line
*
* Handle
* - ind
* - jc
* - numPr
* - pBdr
* - shd
* - spacing
* - textAlignment
*
* Don't Handle (yet)
* - adjustRightInd?
* - autoSpaceDE
* - autoSpaceDN
* - bidi
* - contextualSpacing
* - divId
* - framePr
* - keepLines
* - keepNext
* - kinsoku
* - mirrorIndents
* - overflowPunct
* - pageBreakBefore
* - snapToGrid
* - suppressAutoHyphens
* - suppressLineNumbers
* - suppressOverlap
* - tabs
* - textBoxTightWrap
* - textDirection
* - topLinePunct
* - widowControl
* - wordWrap
*
*/
private static object ConvertParagraph(WordprocessingDocument wordDoc, HtmlConverterSettings settings,
XElement paragraph, XName elementName, bool suppressTrailingWhiteSpace, decimal currentMarginLeft, bool isBidi)
{
var style = new Dictionary<string, string>();
var sn = (string)paragraph.Attribute(PtOpenXml.StyleName);
if (sn != null)
style.Add("PtStyleName", sn);
XElement pPr = paragraph.Element(W.pPr);
if (pPr != null)
{
var spacing = pPr.Element(W.spacing);
if (spacing != null)
{
var spacingBefore = (decimal?)spacing.Attribute(W.before);
if (spacingBefore != null)
style.AddIfMissing("margin-top", string.Format("{0}pt", spacingBefore / 20.0m));
var lineRule = (string)spacing.Attribute(W.lineRule);
if (lineRule == "auto")
{
var line = (decimal)spacing.Attribute(W.line);
if (line != 240m)
{
var pct = (line / 240m) * 100m;
style.Add("line-height", string.Format("{0:0.0}%", pct));
}
}
if (lineRule == "exact")
{
var line = (decimal)spacing.Attribute(W.line);
var points = line / 20m;
style.Add("line-height", string.Format("{0:0.0}pt", points));
}
if (lineRule == "atLeast")
{
var line = (decimal)spacing.Attribute(W.line);
var points = line / 20m;
if (points >= 14m)
style.Add("line-height", string.Format("{0:0.0}pt", points));
}
decimal? spacingAfter;
if (suppressTrailingWhiteSpace)
spacingAfter = 0;
else
spacingAfter = (decimal?)spacing.Attribute(W.after) /*+ addToSpacing*/;
if (spacingAfter != null)
style.AddIfMissing("margin-bottom", string.Format("{0}pt", spacingAfter / 20.0m));
}
var ind = pPr.Element(W.ind);
if (ind != null)
{
decimal? left = (decimal?)ind.Attribute(W.left);
if (left != null)
{
decimal leftInInches = (decimal)left / 1440 - currentMarginLeft;
style.AddIfMissing(isBidi ? "margin-right" : "margin-left",
string.Format("{0:0.00}in", leftInInches));
}
decimal? right = (decimal?)ind.Attribute(W.right);
if (right != null)
{
decimal rightInInches = (decimal)right / 1440;
style.AddIfMissing(isBidi ? "margin-left" : "margin-right",
string.Format("{0:0.00}in", rightInInches));
}
decimal? firstLine = (decimal?)ind.Attribute(W.firstLine);
if (firstLine != null)
{
decimal firstLineInInches = (decimal)firstLine / 1440m;
style.AddIfMissing("text-indent", string.Format("{0:0.00}in", firstLineInInches));
}
decimal? hanging = (decimal?)ind.Attribute(W.hanging);
if (hanging != null)
{
decimal hangingInInches = (decimal)-hanging / 1440m;
style.AddIfMissing("text-indent", string.Format("{0:0.00}in", hangingInInches));
}
}
// todo need to handle
// - both
// - mediumKashida
// - distribute
// - numTab
// - highKashida
// - lowKashida
// - thaiDistribute
var jcVal = (string)pPr.Elements(W.jc).Attributes(W.val).FirstOrDefault();
if (jcVal == null)