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Diffstat (limited to 'tui/widget/list/scrolllist.ha')
| -rw-r--r-- | tui/widget/list/scrolllist.ha | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tui/widget/list/scrolllist.ha b/tui/widget/list/scrolllist.ha index 3aaad87..d08c7d7 100644 --- a/tui/widget/list/scrolllist.ha +++ b/tui/widget/list/scrolllist.ha @@ -115,6 +115,24 @@ export fn bottom(li: *scrolllist) void = { li.frame.start = len(li.items): u16 - sz; }; +export fn setcursor(li: *scrolllist, newpos: u16) void = { + li.cursor = newpos; + reframe(li); +}; + +fn reframe(li: *scrolllist) void = { + if (li.cursor > li.frame.end) { + const diff = li.frame.end - li.frame.start; + li.frame.start = li.cursor; + li.frame.end = li.frame.start + diff; + }; + if (li.cursor < li.frame.start) { + const diff = li.frame.end - li.frame.start; + li.frame.end = li.cursor; + li.frame.start = li.frame.end - diff; + }; +}; + fn stylesscrolllist(widget: *widget::widget, txt: str, idx: size) str = { const list = widget: *scrolllist; const idx = idx + list.frame.start; |