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layout: only mark scrollbar for redraw when the pane actually changed

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wp->flags |= PANE_REDRAWSCROLLBAR was set unconditionally whenever a pane
  reserved a scrollbar, even if layout_fix_panes() left its geometry
  completely unchanged - forcing a needless scrollbar redraw on every layout
  pass. Move it inside the existing "did this pane's geometry actually
  change" check.
This commit is contained in:
Michael Grant
2026-08-22 13:51:03 +01:00
parent 30abbe36a8
commit faba411289
1 changed files with 4 additions and 2 deletions
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6
layout.c
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@@ -492,7 +492,6 @@ layout_fix_panes(struct window *w, struct window_pane *skip)
sx = PANE_MINIMUM;
else
sx = sx - sb_w - sb_pad;
wp->flags |= PANE_REDRAWSCROLLBAR;
}
window_pane_resize(wp, sx, sy);
@@ -500,8 +499,11 @@ layout_fix_panes(struct window *w, struct window_pane *skip)
if (wp->xoff != old_xoff ||
wp->yoff != old_yoff ||
wp->sx != old_sx ||
wp->sy != old_sy)
wp->sy != old_sy) {
changed = 1;
if (window_pane_scrollbar_reserve(wp))
wp->flags |= PANE_REDRAWSCROLLBAR;
}
}
if (changed)
redraw_invalidate_scene(w);