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);
}
}
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<KeyValuePair<HexColumnType, 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 new KeyValuePair<HexColumnType, Rect>(column, new Rect(rect.Value.X, wpfHexView.ViewportTop, rect.Value.Width, wpfHexView.ViewportHeight));
}
bool Intersects(HexBufferSpan fullSpan, HexViewLine line, Rect rect) {
var span = fullSpan.Intersection(line.BufferSpan);
if (span == null || span.Value.Length == 0)
return false;
var allBounds = line.GetNormalizedTextBounds(span.Value, HexSpanSelectionFlags.Selection);
if (allBounds.Count == 0)
return false;
double left = double.MaxValue, right = double.MinValue, top = double.MaxValue, bottom = double.MinValue;
foreach (var bounds in allBounds) {
left = Math.Min(left, bounds.Left);
right = Math.Max(right, bounds.Right);
top = Math.Min(top, bounds.TextTop);
bottom = Math.Max(bottom, bounds.TextBottom);
}
left -= wpfHexView.ViewportLeft;
top -= wpfHexView.ViewportTop;
right -= wpfHexView.ViewportLeft;
bottom -= wpfHexView.ViewportTop;
bool b = left <= right && top <= bottom;
Debug.Assert(b);
if (!b)
return false;
var r = new Rect(left, top, right - left, bottom - top);
return r.IntersectsWith(rect);
}