public TextHitTestResult HitTestPoint(Point point)
{
float y = (float)point.Y;
AvaloniaFormattedTextLine line = default;
float nextTop = 0;
foreach (var currentLine in _skiaLines)
{
if (currentLine.Top <= y)
{
line = currentLine;
nextTop = currentLine.Top + currentLine.Height;
}
else
{
nextTop = currentLine.Top;
break;
}
}
if (!line.Equals(default(AvaloniaFormattedTextLine)))
{
var rects = GetRects();
for (int c = line.Start; c < line.Start + line.TextLength; c++)
{
var rc = rects[c];
if (rc.Contains(point))
{
return(new TextHitTestResult
{
IsInside = !(line.TextLength > line.Length),
TextPosition = c,
IsTrailing = (point.X - rc.X) > rc.Width / 2
});
}
}
int offset = 0;
if (point.X >= (rects[line.Start].X + line.Width) && line.Length > 0)
{
offset = line.TextLength > line.Length ?
line.Length : (line.Length - 1);
}
if (y < nextTop)
{
return(new TextHitTestResult
{
IsInside = false,
TextPosition = line.Start + offset,
IsTrailing = Text.Length == (line.Start + offset + 1)
});
}
}
bool end = point.X > _bounds.Width || point.Y > _lines.Sum(l => l.Height);
return(new TextHitTestResult()
{
IsInside = false,
IsTrailing = end,
TextPosition = end ? Text.Length - 1 : 0
});
}
