IList <VSTF.TextBounds> GetTextBounds(HexViewLine line)
{
if (lineSpan.IsTextSpan)
{
if (lineSpan.TextSpan.Value.Length == 0)
{
if (line.BufferSpan.Contains(lineSpan.BufferSpan))
{
var bounds = line.GetCharacterBounds(lineSpan.TextSpan.Value.Start);
// It's just a point, so use zero width
bounds = new VSTF.TextBounds(bounds.Leading, bounds.Top, 0, bounds.Height, bounds.TextTop, bounds.TextHeight);
return(new VSTF.TextBounds[] { bounds });
}
return(Array.Empty <VSTF.TextBounds>());
}
else
{
return(line.GetNormalizedTextBounds(lineSpan));
}
}
else
{
var fullSpan = lineSpan.BufferSpan;
if (fullSpan.Length == 0)
{
if (line.BufferSpan.Contains(fullSpan))
{
return(line.GetNormalizedTextBounds(fullSpan, lineSpan.SelectionFlags.Value));
}
return(Array.Empty <VSTF.TextBounds>());
}
else
{
return(line.GetNormalizedTextBounds(lineSpan));
}
}
}
IEnumerable <(HexColumnType type, Rect rect)> GetRectanglePositions(HexViewLine line)
{
var column = wpfHexView.Caret.Position.Position.ActiveColumn;
if (!line.BufferLine.IsColumnPresent(column))
{
yield break;
}
var span = line.BufferLine.GetSpan(column, onlyVisibleCells: false);
var rect = GetBounds(line.GetNormalizedTextBounds(span));
if (rect == null || rect.Value.Width <= 0)
{
yield break;
}
yield return(column, new Rect(rect.Value.X, wpfHexView.ViewportTop, rect.Value.Width, wpfHexView.ViewportHeight));
}
Rect GetCaretRect(HexViewLine line, bool drawOverwriteMode, HexColumnType column, HexCell cell, int cellPosition)
{
if (cell == null)
{
return(new Rect());
}
int linePosition = cell.CellSpan.Start + Math.Max(0, Math.Min(cell.CellSpan.Length - 1, cellPosition));
if (hexCaret.CurrentPosition.ActiveColumn != column)
{
var r = ToRect(line.GetNormalizedTextBounds(cell.CellSpan));
return(new Rect(r.X, r.Bottom - INACTIVE_CARET_HEIGHT, r.Width, INACTIVE_CARET_HEIGHT));
}
else if (drawOverwriteMode)
{
var textBounds = line.GetExtendedCharacterBounds(linePosition);
var left = textBounds.Left;
var top = line.TextTop;
var width = textBounds.Width;
var height = line.TextHeight;
return(new Rect(left, top, width, height));
}
else
{
double left;
if (linePosition != 0 && linePosition <= line.BufferLine.Text.Length)
{
left = line.GetExtendedCharacterBounds(linePosition - 1).Trailing;
}
else
{
left = line.GetExtendedCharacterBounds(linePosition).Leading;
}
var top = line.TextTop;
var width = SystemParameters.CaretWidth;
var height = line.TextHeight;
return(new Rect(left, top, width, height));
}
}
