// Token: 0x06006644 RID: 26180 RVA: 0x001CBE1C File Offset: 0x001CA01C
protected TextCollapsingProperties GetCollapsingProps(double wrappingWidth, LineProperties paraProperties)
{
TextCollapsingProperties result;
if (paraProperties.TextTrimming == TextTrimming.CharacterEllipsis)
{
result = new TextTrailingCharacterEllipsis(wrappingWidth, paraProperties.DefaultTextRunProperties);
}
else
{
result = new TextTrailingWordEllipsis(wrappingWidth, paraProperties.DefaultTextRunProperties);
}
return(result);
}
// ------------------------------------------------------------------
// Get collapsing properties.
//
// wrappingWidth - wrapping width for collapsed line.
// paraProperties - paragraph properties.
//
// Returns: Line collapsing properties.
// ------------------------------------------------------------------
protected TextCollapsingProperties GetCollapsingProps(double wrappingWidth, LineProperties paraProperties)
{
Debug.Assert(paraProperties.TextTrimming != TextTrimming.None, "Text trimming must be enabled.");
TextCollapsingProperties collapsingProps;
if (paraProperties.TextTrimming == TextTrimming.CharacterEllipsis)
{
collapsingProps = new TextTrailingCharacterEllipsis(wrappingWidth, paraProperties.DefaultTextRunProperties);
}
else
{
collapsingProps = new TextTrailingWordEllipsis(wrappingWidth, paraProperties.DefaultTextRunProperties);
}
return(collapsingProps);
}
// ------------------------------------------------------------------
// Get collapsing properties.
//
// wrappingWidth - wrapping width for collapsed line.
// paraProperties - paragraph properties.
//
// Returns: Line collapsing properties.
// ------------------------------------------------------------------
protected TextCollapsingProperties GetCollapsingProps(double wrappingWidth, LineProperties paraProperties)
{
Debug.Assert(paraProperties.TextTrimming != TextTrimming.None, "Text trimming must be enabled.");
TextCollapsingProperties collapsingProps;
if (paraProperties.TextTrimming == TextTrimming.CharacterEllipsis)
{
collapsingProps = new TextTrailingCharacterEllipsis(wrappingWidth, paraProperties.DefaultTextRunProperties);
}
else
{
collapsingProps = new TextTrailingWordEllipsis(wrappingWidth, paraProperties.DefaultTextRunProperties);
}
return collapsingProps;
}
// ------------------------------------------------------------------
// Constructor.
// ------------------------------------------------------------------
internal FirstLineProperties(LineProperties lp)
{
_lp = lp;
// properly set the local copy of hyphenator accordingly.
Hyphenator = lp.Hyphenator;
}
//-------------------------------------------------------------------
//
// Internal Methods
//
//-------------------------------------------------------------------
#region Internal Methods
/// <summary>
/// Create and format text line.
/// </summary>
/// <param name="dcp">First character position for the line.</param>
/// <param name="formatWidth">Width to pass to LS formatter.</param>
/// <param name="paragraphWidth">Line wrapping width.</param>
/// <param name="lineProperties">Line's properties.</param>
/// <param name="textRunCache">Run cache.</param>
/// <param name="formatter">Text formatter.</param>
/// <remarks>
/// formatWidth/paragraphWidth is an attempt to work around bug 114719.
/// Unfortunately, Line Services cannot guarantee that once a line
/// has been measured, measuring the same content with the actual line
/// width will produce the same line.
///
/// For example, suppose we format dcp 0 with paragraphWidth = 100.
/// Suppose this results in a line from dcp 0 - 10, with width = 95.
///
/// We would expect that a call to FormatLine with dcp = 0,
/// paragraphWidth = 95 would result in the same 10 char line.
/// But in practice it might return a 9 char line.
///
/// The workaround is to pass in an explicit formatting width across
/// multiple calls, even if the paragraphWidth changes.
/// </remarks>
internal void Format(int dcp, double formatWidth, double paragraphWidth, LineProperties lineProperties, TextRunCache textRunCache, TextFormatter formatter)
{
_lineProperties = lineProperties;
_dcp = dcp;
_paragraphWidth = paragraphWidth;
// We must ignore TextAlignment here since formatWidth does not
// necessarilly equal paragraphWidth. We'll adjust on later calls.
lineProperties.IgnoreTextAlignment = (lineProperties.TextAlignment != TextAlignment.Justify);
try
{
_line = formatter.FormatLine(this, dcp, formatWidth, lineProperties, null, textRunCache);
}
finally
{
lineProperties.IgnoreTextAlignment = false;
}
}
// Helper for IncrementalMeasureLinesAfterInsert, IncrementalMeasureLinesAfterDelete.
// Formats line until we hit a synchronization point, a position where we know
// following lines could not be affected by the change.
private void SyncLineMetrics(DirtyTextRange range, double constraintWidth, LineProperties lineProperties, TextBoxLine line,
bool endOfParagraph, int lineIndex, int lineOffset)
{
bool offsetSyncOk = (range.PositionsAdded == 0 || range.PositionsRemoved == 0);
int lastCoveredCharOffset = range.StartIndex + Math.Max(range.PositionsAdded, range.PositionsRemoved);
// Keep updating lines until we find a synchronized position.
while (!endOfParagraph &&
(lineIndex == _lineMetrics.Count ||
!offsetSyncOk ||
lineOffset != _lineMetrics[lineIndex].Offset))
{
if (lineIndex < _lineMetrics.Count &&
lineOffset >= _lineMetrics[lineIndex].EndOffset)
{
// If the current line offset starts past the current line metric offset,
// remove the metric. This happens when the previous line
// frees up enough space to completely consume the following line.
// We can't simply replace the record without potentially missing our
// [....] position.
_lineMetrics.RemoveAt(lineIndex); //
RemoveLineVisualRange(lineIndex, 1);
}
else
{
using (line)
{
line.Format(lineOffset, constraintWidth, constraintWidth, lineProperties, _cache.TextRunCache, _cache.TextFormatter);
LineRecord record = new LineRecord(lineOffset, line);
if (lineIndex == _lineMetrics.Count ||
lineOffset + line.Length <= _lineMetrics[lineIndex].Offset)
{
// The new line preceeds the old line, insert a new record.
//
_lineMetrics.Insert(lineIndex, record);
AddLineVisualPlaceholder(lineIndex);
}
else
{
// We expect to be colliding with the old line directly.
// If we extend past it, we're in danger of needlessly
// re-formatting the entire doc (ie, we miss the real
// [....] position and don't stop until EndOfParagraph).
Invariant.Assert(lineOffset < _lineMetrics[lineIndex].EndOffset);
_lineMetrics[lineIndex] = record;
ClearLineVisual(lineIndex);
// If this line ends past the invalidated region, and it
// has a hard line break, it's safe to synchronize on the next
// line metric with a matching start offset.
offsetSyncOk |= lastCoveredCharOffset <= record.EndOffset && line.HasLineBreak;
}
lineIndex++;
lineOffset += line.Length;
endOfParagraph = line.EndOfParagraph;
}
}
}
// Remove any trailing lines that got absorbed into the new last line.
if (endOfParagraph && lineIndex < _lineMetrics.Count)
{
int count = _lineMetrics.Count - lineIndex;
_lineMetrics.RemoveRange(lineIndex, count);
RemoveLineVisualRange(lineIndex, count);
}
}
// ------------------------------------------------------------------
// Constructor.
// ------------------------------------------------------------------
internal FirstLineProperties(LineProperties lp)
{
_lp = lp;
// properly set the local copy of hyphenator accordingly.
Hyphenator = lp.Hyphenator;
}
//-------------------------------------------------------------------
// Calculate line advance distance. This functionality will go away
// when TextFormatter will be able to handle line height/stacking.
//
// lineHeight - calculated line height
//
// Returns: Line advance distance..
//-------------------------------------------------------------------
private double CalcLineAdvance(double lineHeight, LineProperties lineProperties)
{
return lineProperties.CalcLineAdvance(lineHeight);
}
//-------------------------------------------------------------------
// Get line properties
//
// firstLine - is it for the first line?
//
// Returns: Line properties for first/following lines.
//-------------------------------------------------------------------
private TextParagraphProperties GetLineProperties(bool firstLine, LineProperties lineProperties)
{
return GetLineProperties(firstLine, false, lineProperties);
}
// Measures content invalidated due to a TextContainer change (rather than
// a constraint change).
//
// Returns the full content size, omitting any unanalyzed content
// at the document end (due to pending background layout).
private Size IncrementalMeasure(double constraintWidth, LineProperties lineProperties)
{
Invariant.Assert(_dirtyList != null);
Invariant.Assert(_dirtyList.Length > 0); // We only allocate _dirtyList when it has content.
Size desiredSize = _contentSize;
DirtyTextRange range = _dirtyList[0];
// Background layout may be running, in which case we need to
// "clip" the scope of this incremental edit. We want to ignore
// changes that extend past the area of the document we're already
// tracking.
if (range.StartIndex > _lineMetrics[_lineMetrics.Count - 1].EndOffset)
{
Invariant.Assert(this.IsBackgroundLayoutPending);
return desiredSize;
}
// Merge the dirty list into a single superset DirtyTextRange.
//
int previousOffset = range.StartIndex;
int positionsAdded = range.PositionsAdded;
int positionsRemoved = range.PositionsRemoved;
for (int i = 1; i < _dirtyList.Length; i++)
{
range = _dirtyList[i];
if (range.StartIndex > _lineMetrics[_lineMetrics.Count - 1].EndOffset)
{
Invariant.Assert(this.IsBackgroundLayoutPending);
break;
}
int rangeDistance = range.StartIndex - previousOffset;
positionsAdded += rangeDistance + range.PositionsAdded;
positionsRemoved += rangeDistance + range.PositionsRemoved;
previousOffset = range.StartIndex;
}
range = new DirtyTextRange(_dirtyList[0].StartIndex, positionsAdded, positionsRemoved);
if (range.PositionsAdded >= range.PositionsRemoved)
{
IncrementalMeasureLinesAfterInsert(constraintWidth, lineProperties, range, ref desiredSize);
}
else if (range.PositionsAdded < range.PositionsRemoved)
{
IncrementalMeasureLinesAfterDelete(constraintWidth, lineProperties, range, ref desiredSize);
}
return desiredSize;
}
// Performs one iteration of background measure.
// Background measure always works at the end of the current
// line metrics array -- invalidations to prevoiusly examined
// content is handled by incremental layout, synchronously.
//
// Returns the full content size, omitting any unanalyzed content
// at the document end.
private Size FullMeasureTick(double constraintWidth, LineProperties lineProperties)
{
Size desiredSize;
TextBoxLine line = new TextBoxLine(this);
int lineOffset;
bool endOfParagraph;
// Find the next position for this iteration.
if (_lineMetrics.Count == 0)
{
desiredSize = new Size();
lineOffset = 0;
}
else
{
desiredSize = _contentSize;
lineOffset = _lineMetrics[_lineMetrics.Count - 1].EndOffset;
}
// Calculate a stop time.
// We limit work to just a few milliseconds per iteration
// to avoid blocking the thread.
DateTime stopTime;
if ((ScrollBarVisibility)((Control)_host).GetValue(ScrollViewer.VerticalScrollBarVisibilityProperty) == ScrollBarVisibility.Auto)
{
// Workaround for bug 1766924.
// When VerticalScrollBarVisiblity == Auto, there's a problem with
// our interaction with ScrollViewer. Disable background layout to
// mitigate the problem until we can take a real fix in v.next.
//
stopTime = DateTime.MaxValue;
}
else
{
stopTime = DateTime.Now.AddMilliseconds(_maxMeasureTimeMs);
}
// Format lines until we hit the end of document or run out of time.
do
{
using (line)
{
line.Format(lineOffset, constraintWidth, constraintWidth, lineProperties, _cache.TextRunCache, _cache.TextFormatter);
// This is a loop invariant, but has negligable cost.
//
_lineHeight = lineProperties.CalcLineAdvance(line.Height);
_lineMetrics.Add(new LineRecord(lineOffset, line));
// Desired width is always max of calculated line widths.
// Desired height is sum of all line heights.
desiredSize.Width = Math.Max(desiredSize.Width, line.Width);
desiredSize.Height += _lineHeight;
lineOffset += line.Length;
endOfParagraph = line.EndOfParagraph;
}
}
while (!endOfParagraph && DateTime.Now < stopTime);
if (!endOfParagraph)
{
// Ran out of time. Defer to background layout.
SetFlags(true, Flags.BackgroundLayoutPending);
this.Dispatcher.BeginInvoke(DispatcherPriority.Background, new DispatcherOperationCallback(OnBackgroundMeasure), null);
}
else
{
// Finished the entire document. Stop background layout.
SetFlags(false, Flags.BackgroundLayoutPending);
}
return desiredSize;
}
// Returns a formatted TextBoxLine at the specified index.
// Caller must Dispose the TextBoxLine.
// This method is expensive.
private TextBoxLine GetFormattedLine(int lineIndex, out LineProperties lineProperties)
{
TextBoxLine line = new TextBoxLine(this);
LineRecord metrics = _lineMetrics[lineIndex];
lineProperties = GetLineProperties();
Control hostControl = (Control)_host;
TextFormattingMode textFormattingMode = TextOptions.GetTextFormattingMode(hostControl);
TextFormatter formatter = TextFormatter.FromCurrentDispatcher(textFormattingMode);
double width = GetWrappingWidth(this.RenderSize.Width);
double formatWidth = GetWrappingWidth(_previousConstraint.Width);
line.Format(metrics.Offset, formatWidth, width, lineProperties, new TextRunCache(), formatter);
Invariant.Assert(metrics.Length == line.Length, "Line is out of [....] with metrics!");
return line;
}
internal override void ValidateVisual(PTS.FSKUPDATE fskupdInherited)
{
// Query paragraph details
PTS.FSSUBTRACKDETAILS subtrackDetails;
PTS.Validate(PTS.FsQuerySubtrackDetails(PtsContext.Context, _paraHandle.Value, out subtrackDetails));
// Draw border and background info.
MbpInfo mbp = MbpInfo.FromElement(Paragraph.Element);
if (ThisFlowDirection != PageFlowDirection)
{
mbp.MirrorBP();
}
uint fswdir = PTS.FlowDirectionToFswdir((FlowDirection)Paragraph.Element.GetValue(FrameworkElement.FlowDirectionProperty));
Brush backgroundBrush = (Brush)Paragraph.Element.GetValue(TextElement.BackgroundProperty);
TextProperties textProperties = new TextProperties(Paragraph.Element, StaticTextPointer.Null, false /* inline objects */, false /* get background */);
// There might be possibility to get empty sub-track, skip the sub-track in such case.
if (subtrackDetails.cParas != 0)
{
PTS.FSPARADESCRIPTION [] arrayParaDesc;
PtsHelper.ParaListFromSubtrack(PtsContext, _paraHandle.Value, ref subtrackDetails, out arrayParaDesc);
using(DrawingContext ctx = _visual.RenderOpen())
{
_visual.DrawBackgroundAndBorderIntoContext(ctx, backgroundBrush, mbp.BorderBrush, mbp.Border, _rect.FromTextDpi(), IsFirstChunk, IsLastChunk);
// Get list of paragraphs
ListMarkerLine listMarkerLine = new ListMarkerLine(Paragraph.StructuralCache.TextFormatterHost, this);
int indexFirstParaInSubtrack = 0;
for(int index = 0; index < subtrackDetails.cParas; index++)
{
List list = Paragraph.Element as List;
BaseParaClient listItemParaClient = PtsContext.HandleToObject(arrayParaDesc[index].pfsparaclient) as BaseParaClient;
PTS.ValidateHandle(listItemParaClient);
if(index == 0)
{
indexFirstParaInSubtrack = list.GetListItemIndex(listItemParaClient.Paragraph.Element as ListItem);
}
if(listItemParaClient.IsFirstChunk)
{
int dvBaseline = listItemParaClient.GetFirstTextLineBaseline();
if(PageFlowDirection != ThisFlowDirection)
{
ctx.PushTransform(new MatrixTransform(-1.0, 0.0, 0.0, 1.0, TextDpi.FromTextDpi(2 * listItemParaClient.Rect.u + listItemParaClient.Rect.du), 0.0));
}
int adjustedIndex;
if (int.MaxValue - index < indexFirstParaInSubtrack)
{
adjustedIndex = int.MaxValue;
}
else
{
adjustedIndex = indexFirstParaInSubtrack + index;
}
LineProperties lineProps = new LineProperties(Paragraph.Element, Paragraph.StructuralCache.FormattingOwner, textProperties, new MarkerProperties(list, adjustedIndex));
listMarkerLine.FormatAndDrawVisual(ctx, lineProps, listItemParaClient.Rect.u, dvBaseline);
if(PageFlowDirection != ThisFlowDirection)
{
ctx.Pop();
}
}
}
listMarkerLine.Dispose();
}
// Render list of paragraphs
PtsHelper.UpdateParaListVisuals(PtsContext, _visual.Children, fskupdInherited, arrayParaDesc);
}
else
{
_visual.Children.Clear();
}
}
/// <summary>
/// Create and format text line.
/// </summary>
/// <param name="ctx">
/// DrawingContext for text line.
/// </param>
/// <param name="lineProps">
/// LineProperties of text line
/// </param>
/// <param name="ur">
/// Horizontal draw location
/// </param>
/// <param name="vrBaseline">
/// Vertical baseline draw location
/// </param>
internal void FormatAndDrawVisual(DrawingContext ctx, LineProperties lineProps, int ur, int vrBaseline)
{
System.Windows.Media.TextFormatting.TextLine line;
bool mirror = (lineProps.FlowDirection == FlowDirection.RightToLeft);
_host.Context = this;
try
{
// Create line object
line = _host.TextFormatter.FormatLine(_host, 0, 0, lineProps.FirstLineProps, null, new TextRunCache());
Point drawLocation = new Point(TextDpi.FromTextDpi(ur), TextDpi.FromTextDpi(vrBaseline) - line.Baseline);
line.Draw(ctx, drawLocation, (mirror ? InvertAxes.Horizontal : InvertAxes.None));
line.Dispose();
}
finally
{
// clear the context
_host.Context = null;
}
}
// ------------------------------------------------------------------
// Create appropriate line object.
// a) SimpleLine, if the content is represented by a string.
// b) ComplexLine, if the content is represented by a TextContainer.
// ------------------------------------------------------------------
private Line CreateLine(LineProperties lineProperties)
{
Line line;
if (_complexContent == null)
line = new SimpleLine(this, Text, lineProperties.DefaultTextRunProperties);
else
line = new ComplexLine(this);
return line;
}
// ------------------------------------------------------------------
// Refetch and cache line properties, if needed.
// ------------------------------------------------------------------
private LineProperties GetLineProperties()
{
// For default text properties always set background to null.
// REASON: If element associated with the text run is TextBlock element, ignore background
// brush, because it is handled outside as FrameworkElement's background.
TextProperties defaultTextProperties = new TextProperties(this, this.IsTypographyDefaultValue);
// Do not allow hyphenation for plain Text so always pass null for IHyphenate.
// Pass page width and height as double.MaxValue when creating LineProperties, since TextBlock does not restrict
// TextIndent or LineHeight
LineProperties lineProperties = new LineProperties(this, this, defaultTextProperties, null);
bool isHyphenationEnabled = (bool) this.GetValue(IsHyphenationEnabledProperty);
if(isHyphenationEnabled)
{
lineProperties.Hyphenator = EnsureHyphenator();
}
return lineProperties;
}
// Measures content invalidated due to a TextContainer change.
private void IncrementalMeasureLinesAfterInsert(double constraintWidth, LineProperties lineProperties, DirtyTextRange range, ref Size desiredSize)
{
int delta = range.PositionsAdded - range.PositionsRemoved;
Invariant.Assert(delta >= 0);
int lineIndex = GetLineIndexFromOffset(range.StartIndex, LogicalDirection.Forward);
if (delta > 0)
{
// Increment of the offsets of all following lines.
//
for (int i = lineIndex + 1; i < _lineMetrics.Count; i++)
{
_lineMetrics[i].Offset += delta;
}
}
TextBoxLine line = new TextBoxLine(this);
int lineOffset;
bool endOfParagraph = false;
// We need to re-format the previous line, because if someone inserted
// a hard break, the first directly affected line might now be shorter
// and mergeable with its predecessor.
if (lineIndex > 0) //
{
FormatFirstIncrementalLine(lineIndex - 1, constraintWidth, lineProperties, line, out lineOffset, out endOfParagraph);
}
else
{
lineOffset = _lineMetrics[lineIndex].Offset;
}
// Format the line directly affected by the change.
// If endOfParagraph == true, then the line was absorbed into its
// predessor (because its new content is thinner, or because the
// TextWrapping property changed).
if (!endOfParagraph)
{
using (line)
{
line.Format(lineOffset, constraintWidth, constraintWidth, lineProperties, _cache.TextRunCache, _cache.TextFormatter);
_lineMetrics[lineIndex] = new LineRecord(lineOffset, line);
lineOffset += line.Length;
endOfParagraph = line.EndOfParagraph;
}
ClearLineVisual(lineIndex);
lineIndex++;
}
// Recalc the following lines not directly affected as needed.
SyncLineMetrics(range, constraintWidth, lineProperties, line, endOfParagraph, lineIndex, lineOffset);
desiredSize = BruteForceCalculateDesiredSize();
}
private TextParagraphProperties GetLineProperties(bool firstLine, bool showParagraphEllipsis, LineProperties lineProperties)
{
GetLineProperties();
firstLine = firstLine && lineProperties.HasFirstLineProperties;
if (!showParagraphEllipsis)
{
return firstLine ? lineProperties.FirstLineProps : lineProperties;
}
else
{
return lineProperties.GetParaEllipsisLineProps(firstLine);
}
}
// Measures content invalidated due to a TextContainer change.
private void IncrementalMeasureLinesAfterDelete(double constraintWidth, LineProperties lineProperties, DirtyTextRange range, ref Size desiredSize)
{
int delta = range.PositionsAdded - range.PositionsRemoved;
Invariant.Assert(delta < 0);
int firstLineIndex = GetLineIndexFromOffset(range.StartIndex);
// Clip the scope of the affected lines to the region of the document
// we've already inspected. Clipping happens when background layout
// has not yet completed but an incremental update happens.
int endOffset = range.StartIndex + -delta - 1;
if (endOffset > _lineMetrics[_lineMetrics.Count - 1].EndOffset)
{
Invariant.Assert(this.IsBackgroundLayoutPending);
endOffset = _lineMetrics[_lineMetrics.Count - 1].EndOffset;
if (range.StartIndex == endOffset)
{
// Nothing left to do until background layout runs.
return;
}
}
int lastLineIndex = GetLineIndexFromOffset(endOffset);
// Increment the offsets of all following lines.
//
for (int i = lastLineIndex + 1; i < _lineMetrics.Count; i++)
{
_lineMetrics[i].Offset += delta;
}
TextBoxLine line = new TextBoxLine(this);
int lineIndex = firstLineIndex;
int lineOffset;
bool endOfParagraph;
// We need to re-format the previous line, because if someone inserted
// a hard break, the first directly affected line might now be shorter
// and mergeable with its predecessor.
if (lineIndex > 0) //
{
FormatFirstIncrementalLine(lineIndex - 1, constraintWidth, lineProperties, line, out lineOffset, out endOfParagraph);
}
else
{
lineOffset = _lineMetrics[lineIndex].Offset;
endOfParagraph = false;
}
//
// Update the first affected line. If it's completely covered, remove it entirely below.
if (!endOfParagraph &&
(range.StartIndex > lineOffset || range.StartIndex + -delta < _lineMetrics[lineIndex].EndOffset))
{
// Only part of the line is covered, reformat it.
using (line)
{
line.Format(lineOffset, constraintWidth, constraintWidth, lineProperties, _cache.TextRunCache, _cache.TextFormatter);
_lineMetrics[lineIndex] = new LineRecord(lineOffset, line);
lineOffset += line.Length;
endOfParagraph = line.EndOfParagraph;
}
ClearLineVisual(lineIndex);
lineIndex++;
}
// Remove all the following lines that are completely covered.
//
_lineMetrics.RemoveRange(lineIndex, lastLineIndex - lineIndex + 1);
RemoveLineVisualRange(lineIndex, lastLineIndex - lineIndex + 1);
// Recalc the following lines not directly affected as needed.
SyncLineMetrics(range, constraintWidth, lineProperties, line, endOfParagraph, lineIndex, lineOffset);
desiredSize = BruteForceCalculateDesiredSize();
}
// Helper for IncrementalMeasureLinesAfterInsert, IncrementalMeasureLinesAfterDelete.
// Formats the line preceding the first directly affected line after a TextContainer change.
// In general this line might grow as content in the following line is absorbed.
private void FormatFirstIncrementalLine(int lineIndex, double constraintWidth, LineProperties lineProperties, TextBoxLine line,
out int lineOffset, out bool endOfParagraph)
{
int originalEndOffset = _lineMetrics[lineIndex].EndOffset;
lineOffset = _lineMetrics[lineIndex].Offset;
using (line)
{
line.Format(lineOffset, constraintWidth, constraintWidth, lineProperties, _cache.TextRunCache, _cache.TextFormatter);
_lineMetrics[lineIndex] = new LineRecord(lineOffset, line);
lineOffset += line.Length;
endOfParagraph = line.EndOfParagraph;
}
// Don't clear the cached Visual unless something changed.
if (originalEndOffset != _lineMetrics[lineIndex].EndOffset)
{
ClearLineVisual(lineIndex);
}
}
// Token: 0x06008A92 RID: 35474 RVA: 0x00257536 File Offset: 0x00255736
internal FirstLineProperties(LineProperties lp)
{
this._lp = lp;
this.Hyphenator = lp.Hyphenator;
}