public TextRun GetTextRun(Int32 characterIndex)
{
NormalizedSpan next = _predictedNode;
do
{
if (characterIndex >= (next.StartCharacterIndex + next.Length))
{
next = next.Next;
}
else
{
if (characterIndex >= next.StartCharacterIndex)
{
TextRun textRun = next.GetTextRun(characterIndex);
if (next.Next != null)
{
_predictedNode = next.Next;
}
return(textRun);
}
next = next.Previous;
}
}while (next != null);
return(_lineBreak);
}
private void CreateNormalizedSpans()
{
Int32 startCharacterIndex = _startCharacterIndex;
Int32 length = _text.Length;
NormalizedSpan span = new NormalizedSpan("", "_gap_", _startCharacterIndex, TextFormattingRunProperties.DefaultProperties);
_startNode = span;
for (Int32 i = 0; i < _classificationSpanList.Count; i++)
{
ClassificationSpan span2 = _classificationSpanList[i];
Span span3 = span2.Span();
if (span3.Start >= (_startCharacterIndex + length))
{
break;
}
Int32 num4 = span3.Start - startCharacterIndex;
if (num4 > 0)
{
NormalizedSpan span4 = new NormalizedSpan(_text.Substring(startCharacterIndex - _startCharacterIndex, span3.Start - startCharacterIndex), "_gap_", startCharacterIndex, TextFormattingRunProperties.DefaultProperties);
span = span.AddNode(span4);
startCharacterIndex += num4;
}
else if (num4 < 0)
{
Int32 num5 = span3.Length + num4;
if (num5 <= 0)
{
continue;
}
span3 = new Span(startCharacterIndex, num5);
}
if (span3.Length > 0)
{
Int32 num6 = startCharacterIndex - _startCharacterIndex;
TextFormattingRunProperties textProperties = _classificationFormatMap.GetTextProperties(span2.Classification);
if ((span3.Length + num6) > length)
{
Int32 num7 = length - num6;
NormalizedSpan span5 = new NormalizedSpan(_text.Substring(span3.Start - _startCharacterIndex, num7), span2.Classification, span3.Start, textProperties);
span = span.AddNode(span5);
startCharacterIndex = _startCharacterIndex + length;
break;
}
NormalizedSpan span6 = new NormalizedSpan(_text.Substring(span3.Start - _startCharacterIndex, span3.Length), span2.Classification, span3.Start, textProperties);
span = span.AddNode(span6);
startCharacterIndex += span3.Length;
}
}
if (startCharacterIndex < (_startCharacterIndex + length))
{
Int32 num8 = length - (startCharacterIndex - _startCharacterIndex);
NormalizedSpan span7 = new NormalizedSpan(_text.Substring(startCharacterIndex - _startCharacterIndex, num8), "_gap_", startCharacterIndex, TextFormattingRunProperties.DefaultProperties);
span = span.AddNode(span7);
}
if (_startNode.Next != null)
{
_startNode = _startNode.Next;
_startNode.Previous = null;
}
}
public Boolean AddTextModifiers()
{
if (!_canSplitOrMerge || !TextFormattingSource.ContainsBiDiCharacters(_text))
{
return(false);
}
NormalizedSpan span = new NormalizedSpan(new TextFormattingModifier(_properties), this.StartCharacterIndex);
span.Next = this;
span.Previous = this.Previous;
if (this.Previous != null)
{
this.Previous.Next = span;
}
this.Previous = span;
NormalizedSpan span2 = new NormalizedSpan(new TextEndOfSegment(1), this.StartCharacterIndex + this.Length);
span2.Next = this.Next;
span2.Previous = this;
if (this.Next != null)
{
this.Next.Previous = span2;
}
this.Next = span2;
return(true);
}
private void CreateNormalizedSpans()
{
Int32 startCharacterIndex = _startCharacterIndex;
Int32 length = _text.Length;
NormalizedSpan span = new NormalizedSpan("", "_gap_", _startCharacterIndex, TextFormattingRunProperties.DefaultProperties);
_startNode = span;
for (Int32 i = 0; i < _classificationSpanList.Count; i++)
{
ClassificationSpan span2 = _classificationSpanList[i];
Span span3 = span2.Span();
if (span3.Start >= (_startCharacterIndex + length))
{
break;
}
Int32 num4 = span3.Start - startCharacterIndex;
if (num4 > 0)
{
NormalizedSpan span4 = new NormalizedSpan(_text.Substring(startCharacterIndex - _startCharacterIndex, span3.Start - startCharacterIndex), "_gap_", startCharacterIndex, TextFormattingRunProperties.DefaultProperties);
span = span.AddNode(span4);
startCharacterIndex += num4;
}
else if (num4 < 0)
{
Int32 num5 = span3.Length + num4;
if (num5 <= 0)
{
continue;
}
span3 = new Span(startCharacterIndex, num5);
}
if (span3.Length > 0)
{
Int32 num6 = startCharacterIndex - _startCharacterIndex;
TextFormattingRunProperties textProperties = _classificationFormatMap.GetTextProperties(span2.Classification);
if ((span3.Length + num6) > length)
{
Int32 num7 = length - num6;
NormalizedSpan span5 = new NormalizedSpan(_text.Substring(span3.Start - _startCharacterIndex, num7), span2.Classification, span3.Start, textProperties);
span = span.AddNode(span5);
startCharacterIndex = _startCharacterIndex + length;
break;
}
NormalizedSpan span6 = new NormalizedSpan(_text.Substring(span3.Start - _startCharacterIndex, span3.Length), span2.Classification, span3.Start, textProperties);
span = span.AddNode(span6);
startCharacterIndex += span3.Length;
}
}
if (startCharacterIndex < (_startCharacterIndex + length))
{
Int32 num8 = length - (startCharacterIndex - _startCharacterIndex);
NormalizedSpan span7 = new NormalizedSpan(_text.Substring(startCharacterIndex - _startCharacterIndex, num8), "_gap_", startCharacterIndex, TextFormattingRunProperties.DefaultProperties);
span = span.AddNode(span7);
}
if (_startNode.Next != null)
{
_startNode = _startNode.Next;
_startNode.Previous = null;
}
}
public NormalizedSpan(String text, String classification, Int32 startCharacterIndex, TextFormattingRunProperties properties)
{
_text = text;
_length = text.Length;
_classification = classification;
_startCharacterIndex = startCharacterIndex;
_properties = properties;
_next = (NormalizedSpan)(_previous = null);
_canSplitOrMerge = true;
}
public NormalizedSpan(String text, String classification, Int32 startCharacterIndex, TextFormattingRunProperties properties)
{
_text = text;
_length = text.Length;
_classification = classification;
_startCharacterIndex = startCharacterIndex;
_properties = properties;
_next = (NormalizedSpan)(_previous = null);
_canSplitOrMerge = true;
}
private void InsertSpaceNegotiationSpans()
{
if (_spaceNegotiationList != null)
{
NormalizedSpan span = _startNode;
foreach (SpaceNegotiation negotiation in _spaceNegotiationList)
{
TextRun textRun = new TextEmbeddedSpace(negotiation.Size);
span = span.AddNode(new NormalizedSpan(textRun, (Int32)negotiation.TextPosition));
_virtualCharacterPositions.Add(((Int32)negotiation.TextPosition) - _startCharacterIndex);
}
}
}
private void AddTextModifiers()
{
for (NormalizedSpan next = _startNode; next != null; next = next.Next)
{
if (next.AddTextModifiers())
{
_containsBiDi = true;
_virtualCharacterPositions.Add(next.StartCharacterIndex - _startCharacterIndex);
_virtualCharacterPositions.Add((next.StartCharacterIndex + next.Length) - _startCharacterIndex);
next = next.Next;
}
}
if (_startNode.Previous != null)
{
_startNode = _startNode.Previous;
}
}
private void AddTextModifiers()
{
for (NormalizedSpan next = _startNode; next != null; next = next.Next)
{
if (next.AddTextModifiers())
{
_containsBiDi = true;
_virtualCharacterPositions.Add(next.StartCharacterIndex - _startCharacterIndex);
_virtualCharacterPositions.Add((next.StartCharacterIndex + next.Length) - _startCharacterIndex);
next = next.Next;
}
}
if (_startNode.Previous != null)
{
_startNode = _startNode.Previous;
}
}
public NormalizedSpanManager(String text, Int32 startCharacterIndex, IList<ClassificationSpan> classificationSpans, IList<SpaceNegotiation> spaceNegotiations, IClassificationFormatMap classificationFormatMap)
{
_text = text;
_startCharacterIndex = startCharacterIndex;
_classificationSpanList = classificationSpans;
_spaceNegotiationList = spaceNegotiations;
_classificationFormatMap = classificationFormatMap;
_virtualCharacterPositions = new List<Int32>();
this.CreateNormalizedSpans();
this.InsertSpaceNegotiationSpans();
this.AddTextModifiers();
this.MergeSpans();
NormalizedSpan next = _startNode;
Int32 num = 0;
while (next != null)
{
next.StartCharacterIndex = num;
num += next.Length;
next = next.Next;
}
_predictedNode = _startNode;
}
public NormalizedSpanManager(String text, Int32 startCharacterIndex, IList <ClassificationSpan> classificationSpans, IList <SpaceNegotiation> spaceNegotiations, IClassificationFormatMap classificationFormatMap)
{
_text = text;
_startCharacterIndex = startCharacterIndex;
_classificationSpanList = classificationSpans;
_spaceNegotiationList = spaceNegotiations;
_classificationFormatMap = classificationFormatMap;
_virtualCharacterPositions = new List <Int32>();
this.CreateNormalizedSpans();
this.InsertSpaceNegotiationSpans();
this.AddTextModifiers();
this.MergeSpans();
NormalizedSpan next = _startNode;
Int32 num = 0;
while (next != null)
{
next.StartCharacterIndex = num;
num += next.Length;
next = next.Next;
}
_predictedNode = _startNode;
}
public Boolean AddTextModifiers()
{
if (!_canSplitOrMerge || !TextFormattingSource.ContainsBiDiCharacters(_text))
{
return false;
}
NormalizedSpan span = new NormalizedSpan(new TextFormattingModifier(_properties), this.StartCharacterIndex);
span.Next = this;
span.Previous = this.Previous;
if (this.Previous != null)
{
this.Previous.Next = span;
}
this.Previous = span;
NormalizedSpan span2 = new NormalizedSpan(new TextEndOfSegment(1), this.StartCharacterIndex + this.Length);
span2.Next = this.Next;
span2.Previous = this;
if (this.Next != null)
{
this.Next.Previous = span2;
}
this.Next = span2;
return true;
}
public NormalizedSpan AddNode(NormalizedSpan span)
{
if (span.StartCharacterIndex > (this.StartCharacterIndex + this.Length))
{
return this.Next.AddNode(span);
}
if (_canSplitOrMerge && (span.StartCharacterIndex < (this.StartCharacterIndex + this.Length)))
{
Int32 startCharacterIndex = span.StartCharacterIndex;
NormalizedSpan span2 = new NormalizedSpan(_text.Substring(startCharacterIndex - this.StartCharacterIndex), _classification, startCharacterIndex, _properties);
_length = startCharacterIndex - this.StartCharacterIndex;
_text = _text.Substring(0, _length);
this.AddNode(span);
return span.AddNode(span2);
}
span.Previous = this;
if (this.Next != null)
{
span.Next = this.Next;
this.Next.Previous = span;
}
this.Next = span;
return span;
}
public NormalizedSpan AddNode(NormalizedSpan span)
{
if (span.StartCharacterIndex > (this.StartCharacterIndex + this.Length))
{
return(this.Next.AddNode(span));
}
if (_canSplitOrMerge && (span.StartCharacterIndex < (this.StartCharacterIndex + this.Length)))
{
Int32 startCharacterIndex = span.StartCharacterIndex;
NormalizedSpan span2 = new NormalizedSpan(_text.Substring(startCharacterIndex - this.StartCharacterIndex), _classification, startCharacterIndex, _properties);
_length = startCharacterIndex - this.StartCharacterIndex;
_text = _text.Substring(0, _length);
this.AddNode(span);
return(span.AddNode(span2));
}
span.Previous = this;
if (this.Next != null)
{
span.Next = this.Next;
this.Next.Previous = span;
}
this.Next = span;
return(span);
}
public TextRun GetTextRun(Int32 characterIndex)
{
NormalizedSpan next = _predictedNode;
do
{
if (characterIndex >= (next.StartCharacterIndex + next.Length))
{
next = next.Next;
}
else
{
if (characterIndex >= next.StartCharacterIndex)
{
TextRun textRun = next.GetTextRun(characterIndex);
if (next.Next != null)
{
_predictedNode = next.Next;
}
return textRun;
}
next = next.Previous;
}
}
while (next != null);
return _lineBreak;
}
private void MergeSpans()
{
for (NormalizedSpan span = _startNode; span != null; span = span.TryMergeNextSpan())
{
}
}
