/// <summary>
/// Performs a deep clone of the TextEngine instance and returns the clone.
/// </summary>
/// <returns>A clone of this TextEngine instance.</returns>
public TextEngine Clone()
{
TextEngine clonedTE = new TextEngine();
clonedTE.layout = layout.Copy();
clonedTE.lines = lines.ToList();
clonedTE.textMode = textMode;
clonedTE.linePos = linePos;
clonedTE.textPos = textPos;
clonedTE.selectionRelativeIndex = selectionRelativeIndex;
clonedTE.underline = underline;
clonedTE.Origin = new Point(Origin.X, Origin.Y);
//The rest of the variables are calculated on the spot.
return(clonedTE);
}
private void EllipsizeLayout(int width)
{
// no room to draw anything
if (width < 1)
{
layout.SetMarkup("");
return;
}
// plenty of room
int lw, lh;
layout.GetPixelSize(out lw, out lh);
if (width > lw)
{
return;
}
// not enough room for ...
int ell_w, ell_h;
Pango.Layout ell = layout.Copy();
ell.SetMarkup("...");
ell.GetPixelSize(out ell_w, out ell_h);
if (width < ell_w)
{
layout.SetMarkup("");
return;
}
// subtract ellipses width
width -= ell_w;
int index, trailing;
Pango.LayoutLine line = layout.GetLine(0);
if (line.XToIndex(width * 1024, out index, out trailing))
{
// Console.WriteLine ("length: {0} index: {1} trailing: {2}", layout.Text.Length, index, trailing);
// FIXME: breaks on accented chars
if (index < layout.Text.Length)
{
layout.SetMarkup(layout.Text.Substring(0, index) + "...");
}
}
}