/// <summary>
/// <see cref="TextViewBase.GetTightBoundingGeometryFromTextPositions"/>
/// </summary>
internal override Geometry GetTightBoundingGeometryFromTextPositions(ITextPointer startPosition, ITextPointer endPosition)
{
#if TEXTPANELLAYOUTDEBUG
TextPanelDebug.StartTimer("TextView.GetTightBoundingGeometryFromTextPositions", TextPanelDebug.Category.TextView);
#endif
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
if (startPosition == null)
{
throw new ArgumentNullException("startPosition");
}
if (endPosition == null)
{
throw new ArgumentNullException("endPosition");
}
ValidationHelper.VerifyPosition(_textContainer, startPosition, "startPosition");
ValidationHelper.VerifyDirection(startPosition.LogicalDirection, "startPosition.LogicalDirection");
ValidationHelper.VerifyPosition(_textContainer, endPosition, "endPosition");
Geometry geometry = _owner.GetTightBoundingGeometryFromTextPositions(startPosition, endPosition);
#if TEXTPANELLAYOUTDEBUG
TextPanelDebug.StopTimer("TextView.GetTightBoundingGeometryFromTextPositions", TextPanelDebug.Category.TextView);
#endif
return(geometry);
}
// ------------------------------------------------------------------
// Create and format text line.
//
// lineStartIndex - index of the first character in the line
// width - wrapping width of the line
// lineProperties - properties of the line
// textRunCache - run cache used by text formatter
// showParagraphEllipsis - true if paragraph ellipsis is shown
// at the end of the line
// ------------------------------------------------------------------
internal void Format(int dcp, double width, TextParagraphProperties lineProperties, TextLineBreak textLineBreak, TextRunCache textRunCache, bool showParagraphEllipsis)
{
#if TEXTPANELLAYOUTDEBUG
TextPanelDebug.IncrementCounter("Line.Format", TextPanelDebug.Category.TextView);
#endif
_mirror = (lineProperties.FlowDirection == FlowDirection.RightToLeft);
_dcp = dcp;
_showParagraphEllipsis = showParagraphEllipsis;
_wrappingWidth = width;
_line = _owner.TextFormatter.FormatLine(this, dcp, width, lineProperties, textLineBreak, textRunCache);
}
