private void MoveCharPosDown(Position pos)
{
if (pos.Line == _lines.Length - 1) return;
pos.Line += 1;
if (_lines[pos.Line].Length - 1 < pos.Column)
{
pos.Column = _lines[pos.Line].Length - 1;
if (pos.Column < 0) pos.Column = 0;
}
}
private void MoveCharPosToLeft(Position pos)
{
if (pos.Column - 1 >= 0)
{
pos.Column -= 1;
}
else if (pos.Line - 1 >= 0)
{
pos.Line -= 1;
pos.Column = _lines[_selection.End.Line].Length - 1;
}
}
private void MoveCharPosUp(Position pos)
{
if (pos.Line == 0) return;
pos.Line -= 1;
if (_lines[pos.Line].Length - 1 < pos.Column)
{
pos.Column = _lines[pos.Line].Length - 1;
}
}
private void MoveCharPosToRight(Position pos)
{
if ((pos.Line < _lines.Length - 1 && pos.Column + 1 <= _lines[pos.Line].Length - 1)
|| (pos.Line == _lines.Length - 1 && pos.Column + 1 <= _lines[pos.Line].Length))
{
pos.Column += 1;
}
else if (pos.Line + 1 <= _lines.Length - 1)
{
pos.Column = 0;
pos.Line += 1;
}
}
private void SetCharPosToNearestToPoint(Position pos, int x, int y, int shiftX, int shiftY)
{
var line = Math.Max((y - shiftY)/_font.Height, 0);
var column = (int) Math.Max((x - DockWidth - shiftX + 3 - OffsetFromDock)/_charWidth, 0);
if (line > _lines.Length - 1)
{
pos.Line = _lines.Length - 1;
}
else
{
pos.Line = line;
}
if (pos.Line < _lines.Length - 1)
{
if (column <= _lines[pos.Line].Length - 1)
{
pos.Column = column;
}
else
{
pos.Column = _lines[pos.Line].Length - 1;
}
}
else
{
if (column <= _lines[pos.Line].Length - 1)
{
pos.Column = column;
}
else
{
pos.Column = _lines[pos.Line].Length;
}
}
}
private void MoveCharPosToLineEnd(Position pos)
{
pos.Column = _lines[pos.Line].Length - 1;
if (pos.Line == _lines.Length - 1) pos.Column += 1;
}
private void MoveCharPosToLineStart(Position pos)
{
pos.Column = 0;
}
private int CharPosToIndex(Position p)
{
var cnt = 0;
for (var i = 0; i < p.Line; ++i)
{
cnt += _lines[i].Length + 1;
}
cnt += p.Column;
return cnt;
}
