public override void UpdateRunWidth()
{
//***
var textBufferSpan = new Typography.Text.TextBufferSpan(_mybuffer);
//TODO: review here,
//1. if mybuffer lenght is not changed,we don't need to alloc new array?
_outputUserCharAdvances = new int[_mybuffer.Length];
if (_renderVxFormattedString != null)
{
_renderVxFormattedString.Dispose();
_renderVxFormattedString = null;
}
var measureResult = new TextSpanMeasureResult();
measureResult.outputXAdvances = _outputUserCharAdvances;
if (_content_unparsed)
{
//parse the content first
if (_lineSegs == null)
{
_lineSegs = new TextPrinterLineSegmentList <TextPrinterLineSegment>();
}
_lineSegs.Clear();
//
if (s_wordVistor == null)
{
s_wordVistor = new TextPrinterWordVisitor();
}
s_wordVistor.SetLineSegmentList(_lineSegs);
RunStyle.BreakToLineSegments(textBufferSpan, s_wordVistor);
s_wordVistor.SetLineSegmentList(null);
//BreakToLineSegs(textBufferSpan);
}
_content_unparsed = false;
RunStyle.CalculateUserCharGlyphAdvancePos(textBufferSpan, _lineSegs, ref measureResult);
SetSize(measureResult.outputTotalW, measureResult.lineHeight);
InvalidateGraphics();
}
public void FindCurrentHitWord(out int startAt, out int len)
{
if (_currentTextRun == null)
{
startAt = 0;
len = 0;
return;
}
using (var copyContext = new TempTextLineCopyContext(_currentLine, out Typography.Text.TextBufferSpan textBufferSpan))
{
_lineSegs.Clear();
_wordVisitor.SetLineSegmentList(_lineSegs);
Typography.Text.GlobalTextService.TxtClient.BreakToLineSegments(textBufferSpan, _wordVisitor);
if (_lineSegs.Count == 0)
{
startAt = 0;
len = 0;
return;
}
int segcount = _lineSegs.Count;
for (int i = 0; i < segcount; ++i)
{
TextPrinterLineSegment seg = _lineSegs.GetLineSegment(i);
if (seg.StartAt + seg.Length >= caret_char_index)
{
//stop at this segment
startAt = seg.StartAt;
len = seg.Length;
return;
}
}
}
//?
startAt = 0;
len = 0;
}
Size MeasureCopyRunLength(CopyRun copyRun)
{
//IAdvanceTextService txServices = GlobalTextService.AdvanceTextService;
char[] mybuffer = copyRun.RawContent;
//if (txServices.SupportsWordBreak)
//{
var textBufferSpan = new Typography.Text.TextBufferSpan(mybuffer);
_lineSegs.Clear();
_wordVisitor.SetLineSegmentList(_lineSegs);
Typography.Text.GlobalTextService.TxtClient.BreakToLineSegments(textBufferSpan, _wordVisitor);
var result = new TextSpanMeasureResult();
result.outputXAdvances = new int[mybuffer.Length];
Typography.Text.GlobalTextService.TxtClient.CalculateUserCharGlyphAdvancePos(textBufferSpan, _lineSegs,
DefaultRunStyle.ReqFont,
ref result);
return(new Size(result.outputTotalW, result.lineHeight));
//}
//else
//{
// var textBufferSpan = new Typography.Text.TextBufferSpan(mybuffer);
// var result = new TextSpanMeasureResult();
// result.outputXAdvances = new int[mybuffer.Length];
// txServices.CalculateUserCharGlyphAdvancePos(textBufferSpan,
// DefaultRunStyle.ReqFont,
// ref result);
// return new Size(result.outputTotalW, result.lineHeight);
//}
}