// Token: 0x06006607 RID: 26119 RVA: 0x001CB000 File Offset: 0x001C9200
private TextRun HandleElementStartEdge(StaticTextPointer position)
{
TextElement textElement = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
TextRun result;
if (textElement is LineBreak)
{
result = new TextEndOfLine(ComplexLine._elementEdgeCharacterLength * 2);
}
else if (textElement.IsEmpty)
{
TextRunProperties textRunProperties = new TextProperties(textElement, position, false, true, base.PixelsPerDip);
char[] array = new char[ComplexLine._elementEdgeCharacterLength * 2];
array[0] = '';
array[1] = '';
result = new TextCharacters(array, 0, array.Length, textRunProperties);
}
else
{
Inline inline = textElement as Inline;
if (inline == null)
{
result = new TextHidden(ComplexLine._elementEdgeCharacterLength);
}
else
{
DependencyObject parent = inline.Parent;
FlowDirection flowDirection = inline.FlowDirection;
FlowDirection flowDirection2 = flowDirection;
if (parent != null)
{
flowDirection2 = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (flowDirection != flowDirection2)
{
if (textDecorations == null || textDecorations.Count == 0)
{
result = new TextSpanModifier(ComplexLine._elementEdgeCharacterLength, null, null, flowDirection);
}
else
{
result = new TextSpanModifier(ComplexLine._elementEdgeCharacterLength, textDecorations, inline.Foreground, flowDirection);
}
}
else if (textDecorations == null || textDecorations.Count == 0)
{
result = new TextHidden(ComplexLine._elementEdgeCharacterLength);
}
else
{
result = new TextSpanModifier(ComplexLine._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);
}
