// Helper for IXamlContentHandler.StartElement.
private XamlToRtfError HandleAttributes(ConverterState converterState, IXamlAttributes attributes,
DocumentNode documentNode, XamlTag xamlTag, DocumentNodeArray dna)
{
int nLen = 0;
XamlToRtfError xamlToRtfError = attributes.GetLength(ref nLen);
if (xamlToRtfError == XamlToRtfError.None)
{
string uri = string.Empty;
string newLocalName = string.Empty;
string newQName = string.Empty;
string valueString = string.Empty;
FormatState formatState = documentNode.FormatState;
XamlAttribute attribute = XamlAttribute.XAUnknown;
long valueData = 0;
for (int i = 0; xamlToRtfError == XamlToRtfError.None && i < nLen; i++)
{
xamlToRtfError = attributes.GetName(i, ref uri, ref newLocalName, ref newQName);
if (xamlToRtfError == XamlToRtfError.None)
{
xamlToRtfError = attributes.GetValue(i, ref valueString);
if (xamlToRtfError == XamlToRtfError.None &&
XamlParserHelper.ConvertToAttribute(converterState, newLocalName, ref attribute))
{
switch (attribute)
{
case XamlAttribute.XAUnknown:
break;
case XamlAttribute.XAFontWeight:
if (string.Compare(valueString, "Normal", StringComparison.OrdinalIgnoreCase) == 0)
{
formatState.Bold = false;
}
else if (string.Compare(valueString, "Bold", StringComparison.OrdinalIgnoreCase) == 0)
{
formatState.Bold = true;
}
break;
case XamlAttribute.XAFontSize:
double fs = 0f;
if (XamlParserHelper.ConvertToFontSize(converterState, valueString, ref fs))
{
formatState.FontSize = (long)Math.Round(fs);
}
break;
case XamlAttribute.XAFontStyle:
if (string.Compare(valueString, "Italic", StringComparison.OrdinalIgnoreCase) == 0)
{
formatState.Italic = true;
}
break;
case XamlAttribute.XAFontFamily:
if (XamlParserHelper.ConvertToFont(converterState, valueString, ref valueData))
{
formatState.Font = valueData;
}
break;
case XamlAttribute.XAFontStretch:
if (XamlParserHelper.ConvertToFontStretch(converterState, valueString, ref valueData))
{
formatState.Expand = valueData;
}
break;
case XamlAttribute.XABackground:
if (XamlParserHelper.ConvertToColor(converterState, valueString, ref valueData))
{
if (documentNode.IsInline)
{
formatState.CB = valueData;
}
else
{
formatState.CBPara = valueData;
}
}
break;
case XamlAttribute.XAForeground:
if (XamlParserHelper.ConvertToColor(converterState, valueString, ref valueData))
{
formatState.CF = valueData;
}
break;
case XamlAttribute.XAFlowDirection:
DirState dirState = DirState.DirDefault;
if (XamlParserHelper.ConvertToDir(converterState, valueString, ref dirState))
{
if (documentNode.IsInline)
{
formatState.DirChar = dirState;
}
else if (documentNode.Type == DocumentNodeType.dnTable)
{
formatState.RowFormat.Dir = dirState;
}
else
{
formatState.DirPara = dirState;
// Set the default inline flow direction as the paragraph's flow direction
formatState.DirChar = dirState;
}
if (documentNode.Type == DocumentNodeType.dnList)
{
// Reset the left/right margin for List as the default value(720)
// on RTL flow direction. Actually LI is set as 720 as the default
// CreateDocumentNode().
if (formatState.DirPara == DirState.DirRTL)
{
formatState.LI = 0;
formatState.RI = 720;
}
}
}
break;
case XamlAttribute.XATextDecorations:
{
ULState ulState = ULState.ULNormal;
StrikeState strikeState = StrikeState.StrikeNormal;
if (XamlParserHelper.ConvertToDecoration(converterState, valueString,
ref ulState,
ref strikeState))
{
if (ulState != ULState.ULNone)
{
formatState.UL = ulState;
}
if (strikeState != StrikeState.StrikeNone)
{
formatState.Strike = strikeState;
}
}
}
break;
case XamlAttribute.XALocation:
{
ULState ulState = ULState.ULNormal;
StrikeState strikeState = StrikeState.StrikeNormal;
if (XamlParserHelper.ConvertToDecoration(converterState, valueString,
ref ulState,
ref strikeState))
{
if (ulState != ULState.ULNone)
{
formatState.UL = ulState;
}
if (strikeState != StrikeState.StrikeNone)
{
formatState.Strike = strikeState;
}
}
}
break;
case XamlAttribute.XARowSpan:
{
int nRowSpan = 0;
if (Converters.StringToInt(valueString, ref nRowSpan))
{
if (documentNode.Type == DocumentNodeType.dnCell)
{
documentNode.RowSpan = nRowSpan;
}
}
}
break;
case XamlAttribute.XAColumnSpan:
{
int nColSpan = 0;
if (Converters.StringToInt(valueString, ref nColSpan))
{
if (documentNode.Type == DocumentNodeType.dnCell)
{
documentNode.ColSpan = nColSpan;
}
}
}
break;
case XamlAttribute.XACellSpacing:
{
double d = 0f;
if (Converters.StringToDouble(valueString, ref d))
{
if (documentNode.Type == DocumentNodeType.dnTable)
{
formatState.RowFormat.Trgaph = Converters.PxToTwipRounded(d);
}
}
}
break;
case XamlAttribute.XANavigateUri:
if (xamlTag == XamlTag.XTHyperlink && valueString.Length > 0)
{
StringBuilder sb = new StringBuilder();
XamlParserHelper.AppendRTFText(sb, valueString, 0);
documentNode.NavigateUri = sb.ToString();
}
break;
case XamlAttribute.XAWidth:
if (xamlTag == XamlTag.XTTableColumn)
{
double d = 0f;
if (Converters.StringToDouble(valueString, ref d))
{
int nTableAt = dna.FindPending(DocumentNodeType.dnTable);
if (nTableAt >= 0)
{
DocumentNode dnTable = dna.EntryAt(nTableAt);
RowFormat rf = dnTable.FormatState.RowFormat;
CellFormat cf = rf.NextCellFormat();
cf.Width.Type = WidthType.WidthTwips;
cf.Width.Value = Converters.PxToTwipRounded(d);
}
}
}
else if (xamlTag == XamlTag.XTImage)
{
double d = 0f;
Converters.StringToDouble(valueString, ref d);
documentNode.FormatState.ImageWidth = d;
}
break;
case XamlAttribute.XAHeight:
if (xamlTag == XamlTag.XTImage)
{
double d = 0f;
Converters.StringToDouble(valueString, ref d);
documentNode.FormatState.ImageHeight = d;
}
break;
case XamlAttribute.XASource:
if (xamlTag == XamlTag.XTImage)
{
documentNode.FormatState.ImageSource = valueString;
}
break;
case XamlAttribute.XAUriSource:
if (xamlTag == XamlTag.XTBitmapImage)
{
documentNode.FormatState.ImageSource = valueString;
}
break;
case XamlAttribute.XAStretch:
if (xamlTag == XamlTag.XTImage)
{
documentNode.FormatState.ImageStretch = valueString;
}
break;
case XamlAttribute.XAStretchDirection:
if (xamlTag == XamlTag.XTImage)
{
documentNode.FormatState.ImageStretchDirection = valueString;
}
break;
case XamlAttribute.XATypographyVariants:
RtfSuperSubscript ss = RtfSuperSubscript.None;
if (XamlParserHelper.ConvertToSuperSub(converterState, valueString, ref ss))
{
if (ss == RtfSuperSubscript.Super)
{
formatState.Super = true;
}
else if (ss == RtfSuperSubscript.Sub)
{
formatState.Sub = true;
}
else if (ss == RtfSuperSubscript.Normal)
{
formatState.Sub = false;
formatState.Super = false;
}
}
break;
case XamlAttribute.XAMarkerStyle:
MarkerStyle ms = MarkerStyle.MarkerBullet;
if (XamlParserHelper.ConvertToMarkerStyle(converterState, valueString, ref ms))
{
formatState.Marker = ms;
}
break;
case XamlAttribute.XAStartIndex:
int nStart = 0;
if (XamlParserHelper.ConvertToStartIndex(converterState, valueString, ref nStart))
{
formatState.StartIndex = nStart;
}
break;
case XamlAttribute.XAMargin:
{
XamlThickness thickness = new XamlThickness(0f, 0f, 0f, 0f);
if (XamlParserHelper.ConvertToThickness(converterState, valueString, ref thickness))
{
formatState.LI = Converters.PxToTwipRounded(thickness.Left);
formatState.RI = Converters.PxToTwipRounded(thickness.Right);
formatState.SB = Converters.PxToTwipRounded(thickness.Top);
formatState.SA = Converters.PxToTwipRounded(thickness.Bottom);
}
}
break;
case XamlAttribute.XAPadding:
{
XamlThickness t = new XamlThickness(0f, 0f, 0f, 0f);
if (XamlParserHelper.ConvertToThickness(converterState, valueString, ref t))
{
if (xamlTag == XamlTag.XTParagraph)
{
// RTF only supports a single border padding value.
formatState.ParaBorder.Spacing = Converters.PxToTwipRounded(t.Left);
}
else
{
RowFormat rf = formatState.RowFormat;
CellFormat cf = rf.RowCellFormat;
cf.PaddingLeft = Converters.PxToTwipRounded(t.Left);
cf.PaddingRight = Converters.PxToTwipRounded(t.Right);
cf.PaddingTop = Converters.PxToTwipRounded(t.Top);
cf.PaddingBottom = Converters.PxToTwipRounded(t.Bottom);
}
}
}
break;
case XamlAttribute.XABorderThickness:
{
XamlThickness t = new XamlThickness(0f, 0f, 0f, 0f);
if (XamlParserHelper.ConvertToThickness(converterState, valueString, ref t))
{
if (xamlTag == XamlTag.XTParagraph)
{
ParaBorder pf = formatState.ParaBorder;
pf.BorderLeft.Type = BorderType.BorderSingle;
pf.BorderLeft.Width = Converters.PxToTwipRounded(t.Left);
pf.BorderRight.Type = BorderType.BorderSingle;
pf.BorderRight.Width = Converters.PxToTwipRounded(t.Right);
pf.BorderTop.Type = BorderType.BorderSingle;
pf.BorderTop.Width = Converters.PxToTwipRounded(t.Top);
pf.BorderBottom.Type = BorderType.BorderSingle;
pf.BorderBottom.Width = Converters.PxToTwipRounded(t.Bottom);
}
else
{
RowFormat rf = formatState.RowFormat;
CellFormat cf = rf.RowCellFormat;
cf.BorderLeft.Type = BorderType.BorderSingle;
cf.BorderLeft.Width = Converters.PxToTwipRounded(t.Left);
cf.BorderRight.Type = BorderType.BorderSingle;
cf.BorderRight.Width = Converters.PxToTwipRounded(t.Right);
cf.BorderTop.Type = BorderType.BorderSingle;
cf.BorderTop.Width = Converters.PxToTwipRounded(t.Top);
cf.BorderBottom.Type = BorderType.BorderSingle;
cf.BorderBottom.Width = Converters.PxToTwipRounded(t.Bottom);
}
}
}
break;
case XamlAttribute.XABorderBrush:
if (XamlParserHelper.ConvertToColor(converterState, valueString, ref valueData))
{
if (xamlTag == XamlTag.XTParagraph)
{
formatState.ParaBorder.CF = valueData;
}
else
{
RowFormat rf = formatState.RowFormat;
CellFormat cf = rf.RowCellFormat;
cf.BorderLeft.CF = valueData;
cf.BorderRight.CF = valueData;
cf.BorderTop.CF = valueData;
cf.BorderBottom.CF = valueData;
}
}
break;
case XamlAttribute.XATextIndent:
double ti = 0;
if (XamlParserHelper.ConvertToTextIndent(converterState, valueString, ref ti))
{
formatState.FI = Converters.PxToTwipRounded(ti);
}
break;
case XamlAttribute.XALineHeight:
double sl = 0;
if (XamlParserHelper.ConvertToLineHeight(converterState, valueString, ref sl))
{
formatState.SL = Converters.PxToTwipRounded(sl);
formatState.SLMult = false;
}
break;
case XamlAttribute.XALang:
{
try
{
CultureInfo ci = new CultureInfo(valueString);
if (ci.LCID > 0)
{
// Extract LANGID from LCID
formatState.Lang = (long)(ushort)ci.LCID;
}
}
catch (System.ArgumentException)
{
// Just omit if this is not a legal language value
}
}
break;
case XamlAttribute.XATextAlignment:
HAlign halign = HAlign.AlignDefault;
if (XamlParserHelper.ConvertToHAlign(converterState, valueString, ref halign))
{
formatState.HAlign = halign;
}
break;
}
}
}
}
}
return xamlToRtfError;
}
/// <summary>
/// Implemnetation of IXamlContentHandler.StartElement
/// </summary>
/// <param name="nameSpaceUri"></param>
/// <param name="localName"></param>
/// <param name="qName"></param>
/// <param name="attributes"></param>
/// <returns></returns>
XamlToRtfError IXamlContentHandler.StartElement(string nameSpaceUri, string localName, string qName, IXamlAttributes attributes)
{
XamlToRtfError xamlToRtfError = XamlToRtfError.None;
ConverterState converterState = _writer.ConverterState;
DocumentNodeArray dna = converterState.DocumentNodeArray;
DocumentNodeType documentNodeType = DocumentNodeType.dnUnknown;
DocumentNode dnTop = dna.TopPending();
DocumentNode documentNode = null;
XamlTag xamlTag = XamlTag.XTUnknown;
bool bNewNode = true;
if (!XamlParserHelper.ConvertToTag(converterState, localName, ref xamlTag))
{
return xamlToRtfError;
}
// Complex Attributes?
if (xamlTag == XamlTag.XTTextDecoration
|| xamlTag == XamlTag.XTTableColumn
|| xamlTag == XamlTag.XTBitmapImage)
{
if (dnTop == null)
{
return xamlToRtfError;
}
documentNode = dnTop;
bNewNode = false;
}
if (bNewNode)
{
if (!XamlParserHelper.ConvertTagToNodeType(xamlTag, ref documentNodeType))
{
return xamlToRtfError;
}
documentNode = CreateDocumentNode(converterState, documentNodeType, dnTop, xamlTag);
}
// Handle attributes
if (attributes != null && documentNode != null)
{
xamlToRtfError = HandleAttributes(converterState, attributes, documentNode, xamlTag, dna);
}
// Now push on element stack
if (xamlToRtfError == XamlToRtfError.None && documentNode != null && bNewNode)
{
// For inline elements, first ensure that there is a paragraph node.
if (!documentNode.IsInline)
{
XamlParserHelper.EnsureParagraphClosed(converterState);
}
dna.Push(documentNode);
}
return xamlToRtfError;
}
