private RtPosition ToRelPos(int absPos, out IRtParagraph para, out IRtSpan span)
{
para = text.Paragraphs[0];
span = para.Spans[0];
var toSkip = absPos;
for (var paraIndex = 0; paraIndex < text.Paragraphs.Count; paraIndex++)
{
para = text.Paragraphs[paraIndex];
for (var spanIndex = 0; spanIndex < para.Spans.Count; spanIndex++)
{
span = para.Spans[spanIndex];
if (span.LayoutTextLength > toSkip)
{
return(new RtPosition(paraIndex, spanIndex, toSkip));
}
toSkip -= span.LayoutTextLength;
}
if (toSkip == 0)
{
var lastSpanIndex = para.Spans.Count - 1;
var lastSpan = para.Spans[lastSpanIndex];
return(new RtPosition(paraIndex, lastSpanIndex, lastSpan.LayoutTextLength));
}
toSkip--;
}
throw new ArgumentOutOfRangeException();
}
private void ApplyMarginUp(BuildingContext context, IRtParagraph para)
{
var marginUp = para.Style.MarginUp;
var oldShape = context.RemainingShape;
context.StripStartPoint.Y += marginUp;
context.RemainingShape = new AaRectangle2(oldShape.MinMin + new Vector2(0, marginUp), oldShape.MaxMax);
}
private static void NormalizePara(IRtParagraph para, IRtSpanStyle prevSpanStyle)
{
if (para.LayoutTextLength == 0)
{
if (para.Spans.IsEmptyL())
{
para.Spans.Add(CreatePureSpan(prevSpanStyle));
}
else
{
for (var i = para.Spans.Count - 1; i >= 1; i--)
{
para.Spans.RemoveAt(i);
}
}
}
else
{
for (var i = para.Spans.Count - 1; i >= 0; i--)
{
if (para.Spans[i].IsEmpty)
{
para.Spans.RemoveAt(i);
}
}
}
for (var i = para.Spans.Count - 2; i >= 0; i--)
{
if (para.Spans[i] is IRtPureSpan span1 &&
para.Spans[i + 1] is IRtPureSpan span2 &&
span1.Style.Equals(span2.Style))
{
span1.Text += span2.Text;
para.Spans.RemoveAt(i + 1);
}
}
}
public void GetParaAndSpan(RtPosition pos, out IRtParagraph para, out IRtSpan span)
{
para = Paragraphs[pos.ParaIndex];
span = para.Spans[pos.SpanIndex];
}