diff options
Diffstat (limited to 'src/Fl_Browser.cxx')
| -rw-r--r-- | src/Fl_Browser.cxx | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/src/Fl_Browser.cxx b/src/Fl_Browser.cxx index 9dd964990..0556f0fc6 100644 --- a/src/Fl_Browser.cxx +++ b/src/Fl_Browser.cxx @@ -1,5 +1,5 @@ // -// "$Id: Fl_Browser.cxx,v 1.9.2.12.2.11 2004/05/16 02:18:13 easysw Exp $" +// "$Id: Fl_Browser.cxx,v 1.9.2.12.2.12 2004/07/26 20:52:50 easysw Exp $" // // Browser widget for the Fast Light Tool Kit (FLTK). // @@ -497,6 +497,54 @@ int Fl_Browser::value() const { return lineno(selection()); } +// SWAP TWO LINES +void Fl_Browser::swap(FL_BLINE *a, FL_BLINE *b) { + + if ( a == b || !a || !b) return; // nothing to do + FL_BLINE *aprev = a->prev; + FL_BLINE *anext = a->next; + FL_BLINE *bprev = b->prev; + FL_BLINE *bnext = b->next; + if ( b->prev == a ) { // A ADJACENT TO B + if ( aprev ) aprev->next = b; else first = b; + b->next = a; + a->next = bnext; + b->prev = aprev; + a->prev = b; + if ( bnext ) bnext->prev = a; else last = a; + } else if ( a->prev == b ) { // B ADJACENT TO A + if ( bprev ) bprev->next = a; else first = a; + a->next = b; + b->next = anext; + a->prev = bprev; + b->prev = a; + if ( anext ) anext->prev = b; else last = b; + } else { // A AND B NOT ADJACENT + // handle prev's + b->prev = aprev; + if ( anext ) anext->prev = b; else last = b; + a->prev = bprev; + if ( bnext ) bnext->prev = a; else last = a; + // handle next's + if ( aprev ) aprev->next = b; else first = b; + b->next = anext; + if ( bprev ) bprev->next = a; else first = a; + a->next = bnext; + } + // Disable cache -- we played around with positions + cacheline = 0; + // Redraw modified lines + redraw_line(a); + redraw_line(b); +} + +void Fl_Browser::swap(int ai, int bi) { + if (ai < 1 || ai > lines || bi < 1 || bi > lines) return; + FL_BLINE* a = find_line(ai); + FL_BLINE* b = find_line(bi); + swap(a,b); +} + // -// End of "$Id: Fl_Browser.cxx,v 1.9.2.12.2.11 2004/05/16 02:18:13 easysw Exp $". +// End of "$Id: Fl_Browser.cxx,v 1.9.2.12.2.12 2004/07/26 20:52:50 easysw Exp $". // |