int TextBuffer::LineNumber (int index) const
{
int l = LinesBetween(lastindex, index);
((TextBuffer*) this)->lastline += l;
((TextBuffer*) this)->lastindex = BeginningOfLine(index);
return lastline;
}
boolean TextManip::HandleKey (Event& e) {
World* world = GetViewer()->GetWorld();
char c = e.keystring[0];
boolean manipulating = true;
switch (c) {
case '\007': world->RingBell(1); break;
case '\001': BeginningOfLine(); break;
case '\005': EndOfLine(); break;
case '\006': ForwardCharacter(1); break;
case '\002': BackwardCharacter(1); break;
case '\016': ForwardLine(1); break;
case '\020': BackwardLine(1); break;
case '\013': DeleteLine(); break;
case '\004': DeleteCharacter(1); break;
case '\010': DeleteCharacter(-1); break;
case '\177': DeleteCharacter(-1); break;
case '\011': InsertCharacter('\t'); break;
case '\015': if (_multiline) InsertCharacter('\n'); break;
case '\033': manipulating = false; break;
default:
if (!iscntrl(c & 0x7f)) {
InsertCharacter(c);
}
break;
}
return manipulating;
}
int TextBuffer::LineIndex(int line) const
{
int l = (line<0) ? 0 : (line>=linecount) ? linecount-1 : line;
while (lastline > l)
{
((TextBuffer*) this)->lastline --;
((TextBuffer*) this)->lastindex =
BeginningOfLine(EndOfPreviousLine(lastindex));
}
while (lastline < l)
{
((TextBuffer*) this)->lastline ++;
((TextBuffer*) this)->lastindex = BeginningOfNextLine(lastindex);
}
if (line >= linecount)
{
return EndOfText();
} else
{
return lastindex;
}
}
int TextBuffer::LineOffset (int index) const
{
return (index<0) ? 0 : (index>length) ? 0 : index-BeginningOfLine(index);
}
