// ------------------------------------------------------------------
// Fetch the next run at UIElment position.
//
// position - current position in the text array
// dcp - current position in the text array
// ------------------------------------------------------------------
private TextRun HandleInlineObject(StaticTextPointer position, int dcp)
{
Debug.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.EmbeddedElement, "TextPointer does not point to embedded object.");
TextRun run = null;
DependencyObject element = position.GetAdjacentElement(LogicalDirection.Forward) as DependencyObject;
if (element is UIElement)
{
//
TextRunProperties textProps = new TextProperties(element, position, true /* inline objects */, true /* get background */);
// Create object run.
run = new InlineObject(dcp, TextContainerHelper.EmbeddedObjectLength, (UIElement)element, textProps, _owner);
}
else
{
// If the embedded object is of an unknown type (not UIElement),
// treat it as element edge.
run = HandleElementEndEdge(position);
}
return(run);
}
// ------------------------------------------------------------------
//
// TextSource Implementation
//
// ------------------------------------------------------------------
#region TextSource Implementation
// ------------------------------------------------------------------
// Get a text run at specified text source position.
// ------------------------------------------------------------------
public override TextRun GetTextRun(int dcp)
{
TextRun run = null;
StaticTextPointer position = _owner.TextContainer.CreateStaticPointerAtOffset(dcp);
switch (position.GetPointerContext(LogicalDirection.Forward))
{
case TextPointerContext.Text:
run = HandleText(position);
break;
case TextPointerContext.ElementStart:
run = HandleElementStartEdge(position);
break;
case TextPointerContext.ElementEnd:
run = HandleElementEndEdge(position);
break;
case TextPointerContext.EmbeddedElement:
run = HandleInlineObject(position, dcp);
break;
case TextPointerContext.None:
run = new TextEndOfParagraph(_syntheticCharacterLength);
break;
}
Debug.Assert(run != null, "TextRun has not been created.");
Debug.Assert(run.Length > 0, "TextRun has to have positive length.");
return(run);
}
// ------------------------------------------------------------------
//
// TextSource Implementation
//
// ------------------------------------------------------------------
#region TextSource Implementation
/// <summary>
/// Get a text run at specified text source position and return it.
/// </summary>
/// <param name="dcp">
/// dcp of position relative to start of line
/// </param>
internal override TextRun GetTextRun(int dcp)
{
TextRun run = null;
ITextContainer textContainer = _paraClient.Paragraph.StructuralCache.TextContainer;
StaticTextPointer position = textContainer.CreateStaticPointerAtOffset(_cpPara + dcp);
switch (position.GetPointerContext(LogicalDirection.Forward))
{
case TextPointerContext.Text:
run = HandleText(position);
break;
case TextPointerContext.ElementStart:
run = HandleElementStartEdge(position);
break;
case TextPointerContext.ElementEnd:
run = HandleElementEndEdge(position);
break;
case TextPointerContext.EmbeddedElement:
run = HandleEmbeddedObject(dcp, position);
break;
case TextPointerContext.None:
run = new ParagraphBreakRun(_syntheticCharacterLength, PTS.FSFLRES.fsflrEndOfParagraph);
break;
}
Invariant.Assert(run != null, "TextRun has not been created.");
Invariant.Assert(run.Length > 0, "TextRun has to have positive length.");
return(run);
}
// Token: 0x0600688D RID: 26765 RVA: 0x001D7D74 File Offset: 0x001D5F74
protected TextRun HandleText(StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.Text, "TextPointer does not point to characters.");
DependencyObject target;
if (position.Parent != null)
{
target = position.Parent;
}
else
{
target = this._paraClient.Paragraph.Element;
}
TextProperties textRunProperties = new TextProperties(target, position, false, true, this._paraClient.Paragraph.StructuralCache.TextFormatterHost.PixelsPerDip);
StaticTextPointer position2 = position.TextContainer.Highlights.GetNextPropertyChangePosition(position, LogicalDirection.Forward);
if (position.GetOffsetToPosition(position2) > 4096)
{
position2 = position.CreatePointer(4096);
}
char[] array = new char[position.GetOffsetToPosition(position2)];
int textInRun = position.GetTextInRun(LogicalDirection.Forward, array, 0, array.Length);
return(new TextCharacters(array, 0, textInRun, textRunProperties));
}
// Token: 0x06004131 RID: 16689 RVA: 0x0012A0E0 File Offset: 0x001282E0
public override TextRun GetTextRun(int dcp)
{
TextRun textRun = null;
StaticTextPointer position = this._owner.Host.TextContainer.CreateStaticPointerAtOffset(dcp);
switch (position.GetPointerContext(LogicalDirection.Forward))
{
case TextPointerContext.None:
textRun = new TextEndOfParagraph(1);
goto IL_5C;
case TextPointerContext.Text:
textRun = this.HandleText(position);
goto IL_5C;
}
Invariant.Assert(false, "Unsupported position type.");
IL_5C:
Invariant.Assert(textRun != null, "TextRun has not been created.");
Invariant.Assert(textRun.Length > 0, "TextRun has to have positive length.");
if (textRun.Properties != null)
{
textRun.Properties.PixelsPerDip = base.PixelsPerDip;
}
return(textRun);
}
// Token: 0x060065FF RID: 26111 RVA: 0x001CAA74 File Offset: 0x001C8C74
public override TextRun GetTextRun(int dcp)
{
TextRun textRun = null;
StaticTextPointer position = this._owner.TextContainer.CreateStaticPointerAtOffset(dcp);
switch (position.GetPointerContext(LogicalDirection.Forward))
{
case TextPointerContext.None:
textRun = new TextEndOfParagraph(Line._syntheticCharacterLength);
break;
case TextPointerContext.Text:
textRun = this.HandleText(position);
break;
case TextPointerContext.EmbeddedElement:
textRun = this.HandleInlineObject(position, dcp);
break;
case TextPointerContext.ElementStart:
textRun = this.HandleElementStartEdge(position);
break;
case TextPointerContext.ElementEnd:
textRun = this.HandleElementEndEdge(position);
break;
}
if (textRun.Properties != null)
{
textRun.Properties.PixelsPerDip = base.PixelsPerDip;
}
return(textRun);
}
/// <summary>
/// Get a text run at specified text source position.
/// </summary>
public override TextRun GetTextRun(int dcp)
{
TextRun run = null;
StaticTextPointer position = _owner.Host.TextContainer.CreateStaticPointerAtOffset(dcp);
switch (position.GetPointerContext(LogicalDirection.Forward))
{
case TextPointerContext.Text:
run = HandleText(position);
break;
case TextPointerContext.None:
run = new TextEndOfParagraph(_syntheticCharacterLength);
break;
case TextPointerContext.ElementStart:
case TextPointerContext.ElementEnd:
case TextPointerContext.EmbeddedElement:
default:
Invariant.Assert(false, "Unsupported position type.");
break;
}
Invariant.Assert(run != null, "TextRun has not been created.");
Invariant.Assert(run.Length > 0, "TextRun has to have positive length.");
return(run);
}
// Token: 0x06006890 RID: 26768 RVA: 0x001D80F4 File Offset: 0x001D62F4
protected TextRun HandleEmbeddedObject(int dcp, StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.EmbeddedElement, "TextPointer does not point to embedded object.");
DependencyObject dependencyObject = position.GetAdjacentElement(LogicalDirection.Forward) as DependencyObject;
TextRun result;
if (dependencyObject is UIElement)
{
TextRunProperties textProps = new TextProperties(dependencyObject, position, true, true, this._paraClient.Paragraph.StructuralCache.TextFormatterHost.PixelsPerDip);
result = new InlineObjectRun(TextContainerHelper.EmbeddedObjectLength, (UIElement)dependencyObject, textProps, this._paraClient.Paragraph as TextParagraph);
}
else
{
result = new TextHidden(TextContainerHelper.EmbeddedObjectLength);
}
return(result);
}
//-------------------------------------------------------------------
//
// Protected Methods
//
//-------------------------------------------------------------------
#region Protected Methods
/// <summary>
/// Fetch the next run at text position.
/// </summary>
/// <param name="position">
/// Current position in text array
/// </param>
/// <returns></returns>
protected TextRun HandleText(StaticTextPointer position)
{
DependencyObject element;
StaticTextPointer endOfRunPosition;
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.Text, "TextPointer does not point to characters.");
if (position.Parent != null)
{
element = position.Parent;
}
else
{
element = _paraClient.Paragraph.Element;
}
// Extract the aggregated properties into something that the textrun can use.
//
TextProperties textProps = new TextProperties(element, position, false /* inline objects */, true /* get background */,
_paraClient.Paragraph.StructuralCache.TextFormatterHost.PixelsPerDip);
// Calculate the end of the run by finding either:
// a) the next intersection of highlight ranges, or
// b) the natural end of this textrun
endOfRunPosition = position.TextContainer.Highlights.GetNextPropertyChangePosition(position, LogicalDirection.Forward);
// Clamp the text run at an arbitrary limit, so we don't make
// an unbounded allocation.
if (position.GetOffsetToPosition(endOfRunPosition) > 4096)
{
endOfRunPosition = position.CreatePointer(4096);
}
// Get character buffer for the text run.
char[] textBuffer = new char[position.GetOffsetToPosition(endOfRunPosition)];
// Copy characters from text run into buffer. Note the actual number of characters copied,
// which may be different than the buffer's length. Buffer length only specifies the maximum
// number of characters
int charactersCopied = position.GetTextInRun(LogicalDirection.Forward, textBuffer, 0, textBuffer.Length);
// Create text run using the actual number of characters copied
return(new TextCharacters(textBuffer, 0, charactersCopied, textProps));
}
/// <summary>
/// Fetch the next run at element end edge position.
/// ElementEndEdge; we can have 2 possibilities:
/// (1) Close edge of element associated with the text paragraph,
/// create synthetic LineBreak run to end the current line.
/// (2) End of inline element, hide CloseEdge character and continue
/// </summary>
/// <param name="position"></param>
/// Position in current text array
protected TextRun HandleElementEndEdge(StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementEnd, "TextPointer does not point to element end edge.");
TextRun run;
if (position.Parent == _paraClient.Paragraph.Element)
{
// (1) Close edge of element associated with the text paragraph,
// create synthetic LineBreak run to end the current line.
run = new ParagraphBreakRun(_syntheticCharacterLength, PTS.FSFLRES.fsflrEndOfParagraph);
}
else
{
TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Debug.Assert(element != null, "Element should be here.");
Inline inline = (Inline)element;
DependencyObject parent = inline.Parent;
FlowDirection parentFlowDirection = inline.FlowDirection;
if (parent != null)
{
parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
if (inline.FlowDirection != parentFlowDirection)
{
run = new TextEndOfSegment(_elementEdgeCharacterLength);
}
else
{
TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (textDecorations == null || textDecorations.Count == 0)
{
// (2) End of inline element, hide CloseEdge character and continue
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
run = new TextEndOfSegment(_elementEdgeCharacterLength);
}
}
}
return(run);
}
// ------------------------------------------------------------------
// Fetch the next run at element close edge position.
//
// position - current position in the text array
// ------------------------------------------------------------------
private TextRun HandleElementEndEdge(StaticTextPointer position)
{
Debug.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementEnd, "TextPointer does not point to element end edge.");
TextRun run = null;
TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Debug.Assert(element != null, "Element should be here.");
Inline inline = element as Inline;
if (inline == null)
{
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
DependencyObject parent = inline.Parent;
FlowDirection parentFlowDirection = inline.FlowDirection;
if (parent != null)
{
parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
if (inline.FlowDirection != parentFlowDirection)
{
run = new TextEndOfSegment(_elementEdgeCharacterLength);
}
else
{
TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (textDecorations == null || textDecorations.Count == 0)
{
// (2) End of inline element, hide CloseEdge character and continue
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
run = new TextEndOfSegment(_elementEdgeCharacterLength);
}
}
}
return(run);
}
/// <summary>
/// Fetch the next run at embedded object position.
/// </summary>
/// <param name="dcp">
/// Character offset of this run.
/// </param>
/// <param name="position">
/// Current position in the text array.
/// </param>
protected TextRun HandleEmbeddedObject(int dcp, StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.EmbeddedElement, "TextPointer does not point to embedded object.");
TextRun run = null;
DependencyObject embeddedObject = position.GetAdjacentElement(LogicalDirection.Forward) as DependencyObject;
if (embeddedObject is UIElement)
{
// Extract the aggregated properties into something that the textrun can use.
TextRunProperties textProps = new TextProperties(embeddedObject, position, true /* inline objects */, true /* get background */);
// Create inline object run.
run = new InlineObjectRun(TextContainerHelper.EmbeddedObjectLength, (UIElement)embeddedObject, textProps, _paraClient.Paragraph as TextParagraph);
}
else
{
// If the embedded object is of an unknown type, treat it as hidden content.
run = new TextHidden(TextContainerHelper.EmbeddedObjectLength);
}
return(run);
}
// Token: 0x0600688F RID: 26767 RVA: 0x001D802C File Offset: 0x001D622C
protected TextRun HandleElementEndEdge(StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementEnd, "TextPointer does not point to element end edge.");
TextRun result;
if (position.Parent == this._paraClient.Paragraph.Element)
{
result = new ParagraphBreakRun(LineBase._syntheticCharacterLength, PTS.FSFLRES.fsflrEndOfParagraph);
}
else
{
TextElement textElement = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Inline inline = (Inline)textElement;
DependencyObject parent = inline.Parent;
FlowDirection flowDirection = inline.FlowDirection;
if (parent != null)
{
flowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
if (inline.FlowDirection != flowDirection)
{
result = new TextEndOfSegment(LineBase._elementEdgeCharacterLength);
}
else
{
TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (textDecorations == null || textDecorations.Count == 0)
{
result = new TextHidden(LineBase._elementEdgeCharacterLength);
}
else
{
result = new TextEndOfSegment(LineBase._elementEdgeCharacterLength);
}
}
}
return(result);
}
// Token: 0x06006B36 RID: 27446 RVA: 0x001EF6F4 File Offset: 0x001ED8F4
internal override bool InvalidateStructure(int startPosition)
{
Invariant.Assert(base.ParagraphEndCharacterPosition >= startPosition);
bool result = false;
if (base.ParagraphStartCharacterPosition == startPosition)
{
result = true;
AnchoredBlock anchoredBlock = null;
if (this._attachedObjects != null && this._attachedObjects.Count > 0)
{
anchoredBlock = (AnchoredBlock)this._attachedObjects[0].Element;
}
if (anchoredBlock != null && startPosition == anchoredBlock.ElementStartOffset)
{
StaticTextPointer staticTextPointerFromCP = TextContainerHelper.GetStaticTextPointerFromCP(base.StructuralCache.TextContainer, startPosition);
if (staticTextPointerFromCP.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementStart)
{
result = (anchoredBlock != staticTextPointerFromCP.GetAdjacentElement(LogicalDirection.Forward));
}
}
}
this.InvalidateTextFormatCache();
if (this._attachedObjects != null)
{
for (int i = 0; i < this._attachedObjects.Count; i++)
{
BaseParagraph para = this._attachedObjects[i].Para;
if (para.ParagraphEndCharacterPosition >= startPosition)
{
para.InvalidateStructure(startPosition);
}
}
}
return(result);
}
/// <summary>
/// Return next TextRun at element edge start position
/// </summary>
/// <param name="position">
/// Current position in text array
/// </param>
protected TextRun HandleElementStartEdge(StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementStart, "TextPointer does not point to element start edge.");
// In the future, handle visibility collapsed.
TextRun run = null;
TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Debug.Assert(element != null, "Cannot use ITextContainer that does not provide TextElement instances.");
Invariant.Assert(!(element is Block), "We do not expect any Blocks inside Paragraphs");
// Treat figure and floaters as special hidden runs.
if (element is Figure || element is Floater)
{
// Get the length of the element
int cch = TextContainerHelper.GetElementLength(_paraClient.Paragraph.StructuralCache.TextContainer, element);
// Create special hidden run.
run = new FloatingRun(cch, element is Figure);
if (element is Figure)
{
_hasFigures = true;
}
else
{
_hasFloaters = true;
}
}
else if (element is LineBreak)
{
int cch = TextContainerHelper.GetElementLength(_paraClient.Paragraph.StructuralCache.TextContainer, element);
run = new LineBreakRun(cch, PTS.FSFLRES.fsflrSoftBreak);
}
else if (element.IsEmpty)
{
// Empty TextElement should affect line metrics.
// TextFormatter does not support this feature right now, so as workaround
// TextRun with ZERO WIDTH SPACE is used.
TextProperties textProps = new TextProperties(element, position, false /* inline objects */, true /* get background */,
_paraClient.Paragraph.StructuralCache.TextFormatterHost.PixelsPerDip);
char[] textBuffer = new char[_elementEdgeCharacterLength * 2];
// Assert that _elementEdgeCharacterLength is 1 before we use hard-coded indices
Invariant.Assert(_elementEdgeCharacterLength == 1, "Expected value of _elementEdgeCharacterLength is 1");
textBuffer[0] = (char)0x200B;
textBuffer[1] = (char)0x200B;
run = new TextCharacters(textBuffer, 0, textBuffer.Length, textProps);
}
else
{
Inline inline = (Inline)element;
DependencyObject parent = inline.Parent;
FlowDirection inlineFlowDirection = inline.FlowDirection;
FlowDirection parentFlowDirection = inlineFlowDirection;
TextDecorationCollection inlineTextDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (parent != null)
{
parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
if (inlineFlowDirection != parentFlowDirection)
{
// Inline's flow direction is different from its parent. Need to create new TextSpanModifier with flow direction
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
null,
null,
inlineFlowDirection
);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground,
inlineFlowDirection
);
}
}
else
{
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground
);
}
}
}
return(run);
}
// Token: 0x0600688E RID: 26766 RVA: 0x001D7E38 File Offset: 0x001D6038
protected TextRun HandleElementStartEdge(StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementStart, "TextPointer does not point to element start edge.");
TextElement textElement = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Invariant.Assert(!(textElement is Block), "We do not expect any Blocks inside Paragraphs");
TextRun result;
if (textElement is Figure || textElement is Floater)
{
int elementLength = TextContainerHelper.GetElementLength(this._paraClient.Paragraph.StructuralCache.TextContainer, textElement);
result = new FloatingRun(elementLength, textElement is Figure);
if (textElement is Figure)
{
this._hasFigures = true;
}
else
{
this._hasFloaters = true;
}
}
else if (textElement is LineBreak)
{
int elementLength2 = TextContainerHelper.GetElementLength(this._paraClient.Paragraph.StructuralCache.TextContainer, textElement);
result = new LineBreakRun(elementLength2, PTS.FSFLRES.fsflrSoftBreak);
}
else if (textElement.IsEmpty)
{
TextProperties textRunProperties = new TextProperties(textElement, position, false, true, this._paraClient.Paragraph.StructuralCache.TextFormatterHost.PixelsPerDip);
char[] array = new char[LineBase._elementEdgeCharacterLength * 2];
Invariant.Assert(LineBase._elementEdgeCharacterLength == 1, "Expected value of _elementEdgeCharacterLength is 1");
array[0] = '';
array[1] = '';
result = new TextCharacters(array, 0, array.Length, textRunProperties);
}
else
{
Inline inline = (Inline)textElement;
DependencyObject parent = inline.Parent;
FlowDirection flowDirection = inline.FlowDirection;
FlowDirection flowDirection2 = flowDirection;
TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (parent != null)
{
flowDirection2 = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
if (flowDirection != flowDirection2)
{
if (textDecorations == null || textDecorations.Count == 0)
{
result = new TextSpanModifier(LineBase._elementEdgeCharacterLength, null, null, flowDirection);
}
else
{
result = new TextSpanModifier(LineBase._elementEdgeCharacterLength, textDecorations, inline.Foreground, flowDirection);
}
}
else if (textDecorations == null || textDecorations.Count == 0)
{
result = new TextHidden(LineBase._elementEdgeCharacterLength);
}
else
{
result = new TextSpanModifier(LineBase._elementEdgeCharacterLength, textDecorations, inline.Foreground);
}
}
return(result);
}
// ------------------------------------------------------------------
// Fetch the next run at element open edge position.
//
// position - current position in the text array
// ------------------------------------------------------------------
private TextRun HandleElementStartEdge(StaticTextPointer position)
{
Debug.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementStart, "TextPointer does not point to element start edge.");
//
TextRun run = null;
TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Debug.Assert(element != null, "Cannot use ITextContainer that does not provide TextElement instances.");
if (element is LineBreak)
{
run = new TextEndOfLine(_elementEdgeCharacterLength * 2);
}
else if (element.IsEmpty)
{
// Empty TextElement should affect line metrics.
// TextFormatter does not support this feature right now, so as workaround
// TextRun with ZERO WIDTH SPACE is used.
TextRunProperties textProps = new TextProperties(element, position, false /* inline objects */, true /* get background */);
char[] textBuffer = new char[_elementEdgeCharacterLength * 2];
textBuffer[0] = (char)0x200B;
textBuffer[1] = (char)0x200B;
run = new TextCharacters(textBuffer, 0, textBuffer.Length, textProps);
}
else
{
Inline inline = element as Inline;
if (inline == null)
{
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
DependencyObject parent = inline.Parent;
FlowDirection inlineFlowDirection = inline.FlowDirection;
FlowDirection parentFlowDirection = inlineFlowDirection;
if (parent != null)
{
parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
TextDecorationCollection inlineTextDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (inlineFlowDirection != parentFlowDirection)
{
// Inline's flow direction is different from its parent. Need to create new TextSpanModifier with flow direction
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
null,
null,
inlineFlowDirection
);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground,
inlineFlowDirection
);
}
}
else
{
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground
);
}
}
}
}
return(run);
}