Tier: Blocked on quadraui (needs Backend::draw_scrollbar() and a drag-drop visual primitive) — unblocked, see 2026-07-11 update below.
Summary
Two remaining hand-rolled paint paths in src/tui_main/render_impl.rs directly mutate the ratatui Buffer because quadraui's TUI backend doesn't expose the relevant primitive yet:
| Path |
Lines |
What it draws |
Quadraui gap |
| Per-window vertical scrollbar in separator column |
render_impl.rs:1579–1680 (~100) |
Thumb/track within the 1-column window separator |
Backend::draw_scrollbar() |
| Tab drag-and-drop overlay |
render_impl.rs:1243–1330 (~20 lines of cell painting at 1286–1318) |
Drop-zone highlight + insertion bar |
Backend::draw_drag_drop_indicator() (or draw_rectangle()) |
Both compute geometry locally; the math is duplicated from the shared utilities (render::terminal_scrollbar_geometry(), render::compute_tab_drop_overlay()), but rendering can't route through quadraui because the primitives are missing.
What exists
render::terminal_scrollbar_geometry() (render.rs:1820) — geometry only, not rendering.render::compute_tab_drop_overlay() (render.rs:12291) — geometry only.quadraui::fit_thumb() — used internally by both call sites.
What to do
- File quadraui issues for:
Backend::draw_scrollbar() (or a Scrollbar primitive + draw method) — TUI + GTK both implement it.- A drag-drop visual primitive (or
Backend::draw_rectangle() if quadraui prefers a more generic painter).
- Once landed: replace cell painting at
render_impl.rs:1625–1643 and :1286–1318 with calls to the new backend methods. Geometry inputs come from the existing shared computation fns.
Files
src/tui_main/render_impl.rs — ~120 lines of manual cell painting removed across the two paths.
Dependencies
- Blocked on quadraui: scrollbar primitive + drag-drop visual primitive. Both look like simple additions.
Notes
Part of the TUI convergence backlog (#474). Low priority by line count, but valuable for symmetry — every other primitive renders through quadraui now, and these are the last two TUI-specific paint paths in render_impl.rs. The window-separator scrollbar UX is fine today; only the rendering layer needs to converge.
Update (chat session #676, 2026-07-11) — the blocker was already resolved and the migration already written; found orphaned
quadraui shipped both needed primitives (quadraui::Scrollbar::vertical + quadraui::tui::draw_scrollbar,
and quadraui::DropOverlay + quadraui::tui::draw_drop_overlay — still present today in
~/src/quadraui/quadraui/src/tui/{scrollbar,drop_overlay}.rs), and the vimcode-side adoption was
written and pushed on 2026-05-30 to issue-481-tui-migrate-window-separator-scrollbar-d (commit
13ebd820f) — one of four same-evening branches (#454/#459/#468/#481) found orphaned in the same
diagnostic sweep. It was never opened as a PR.
Unlike the other three, this branch has no bundled quadraui-compat-shim noise — it's a clean,
self-contained 2-file diff. Verified with a read-only git merge-tree origin/develop issue-481-...: zero conflicts. Also confirmed current develop still has the old manual
painting this replaces (RColor::Indexed(24), hand-rolled thumb_top/thumb_size math) — nothing
superseded it since.
Full rework instructions (should be closer to a plain rebase than the other three) in
/tmp/rework-briefing-481.md on elitebook. Next step: coord assign elitebook vimcode 481 --rework-of issue-481-tui-migrate-window-separator-scrollbar-d --interactive --briefing-file /tmp/rework-briefing-481.md.
Tier:
Blocked on quadraui (needs— unblocked, see 2026-07-11 update below.Backend::draw_scrollbar()and a drag-drop visual primitive)Summary
Two remaining hand-rolled paint paths in
src/tui_main/render_impl.rsdirectly mutate the ratatui Buffer because quadraui's TUI backend doesn't expose the relevant primitive yet:render_impl.rs:1579–1680(~100)Backend::draw_scrollbar()render_impl.rs:1243–1330(~20 lines of cell painting at 1286–1318)Backend::draw_drag_drop_indicator()(ordraw_rectangle())Both compute geometry locally; the math is duplicated from the shared utilities (
render::terminal_scrollbar_geometry(),render::compute_tab_drop_overlay()), but rendering can't route through quadraui because the primitives are missing.What exists
render::terminal_scrollbar_geometry()(render.rs:1820) — geometry only, not rendering.render::compute_tab_drop_overlay()(render.rs:12291) — geometry only.quadraui::fit_thumb()— used internally by both call sites.What to do
Backend::draw_scrollbar()(or aScrollbarprimitive + draw method) — TUI + GTK both implement it.Backend::draw_rectangle()if quadraui prefers a more generic painter).render_impl.rs:1625–1643and:1286–1318with calls to the new backend methods. Geometry inputs come from the existing shared computation fns.Files
src/tui_main/render_impl.rs— ~120 lines of manual cell painting removed across the two paths.Dependencies
Notes
Part of the TUI convergence backlog (#474). Low priority by line count, but valuable for symmetry — every other primitive renders through quadraui now, and these are the last two TUI-specific paint paths in
render_impl.rs. The window-separator scrollbar UX is fine today; only the rendering layer needs to converge.Update (chat session #676, 2026-07-11) — the blocker was already resolved and the migration already written; found orphaned
quadraui shipped both needed primitives (
quadraui::Scrollbar::vertical+quadraui::tui::draw_scrollbar,and
quadraui::DropOverlay+quadraui::tui::draw_drop_overlay— still present today in~/src/quadraui/quadraui/src/tui/{scrollbar,drop_overlay}.rs), and the vimcode-side adoption waswritten and pushed on 2026-05-30 to
issue-481-tui-migrate-window-separator-scrollbar-d(commit13ebd820f) — one of four same-evening branches (#454/#459/#468/#481) found orphaned in the samediagnostic sweep. It was never opened as a PR.
Unlike the other three, this branch has no bundled quadraui-compat-shim noise — it's a clean,
self-contained 2-file diff. Verified with a read-only
git merge-tree origin/develop issue-481-...: zero conflicts. Also confirmed currentdevelopstill has the old manualpainting this replaces (
RColor::Indexed(24), hand-rolledthumb_top/thumb_sizemath) — nothingsuperseded it since.
Full rework instructions (should be closer to a plain rebase than the other three) in
/tmp/rework-briefing-481.mdon elitebook. Next step:coord assign elitebook vimcode 481 --rework-of issue-481-tui-migrate-window-separator-scrollbar-d --interactive --briefing-file /tmp/rework-briefing-481.md.