public ITextRangeProvider[] GetVisibleRanges()
{
ITextRangeProvider[] ret = new ITextRangeProvider[1];
if (this.fooTextBox.LayoutLineCollection.Count == 0)
{
ret[0] = new FooTextBoxRangeProvider(this.fooTextBox, 0, 0, this);
}
else
{
EditView view = this.fooTextBox.View;
int startIndex = view.GetIndexFromLayoutLine(new TextPoint(view.Src.Row, 0));
int endIndex = view.GetIndexFromLayoutLine(new TextPoint(view.Src.Row + view.LineCountOnScreen, 0));
ret[0] = new FooTextBoxRangeProvider(this.fooTextBox, startIndex, endIndex - startIndex, this);
}
return(ret);
}
public ITextRangeProvider GetCaretRange(out bool isActive)
{
EditView view = this.fooTextBox.View;
Document doc = this.fooTextBox.Document;
isActive = true;
int index = view.GetIndexFromLayoutLine(doc.CaretPostion);
int length = 1;
if (index == this.fooTextBox.Document.Length)
{
length = 0;
}
return(new FooTextBoxRangeProvider(this.fooTextBox, index, length, this));
}
public ITextRangeProvider RangeFromPoint(System.Windows.Point screenLocation)
#endif
{
Point pt = Util.GetClientPoint(screenLocation, fooTextBox);
EditView view = this.fooTextBox.View;
TextPoint tp = view.GetTextPointFromPostion(pt);
if (tp == TextPoint.Null)
{
tp = new TextPoint(view.Src.Row, 0);
}
int index = view.GetIndexFromLayoutLine(tp);
int length = 1;
if (index == this.fooTextBox.Document.Length)
{
length = 0;
}
return(new FooTextBoxRangeProvider(this.fooTextBox, index, length, this));
}