Merge pull request #28081 from bfredl/viewport_margin

feature(ui): indicate margins for the area used by win_viewport

2 files changed, 11 insertions, 0 deletions

diff --git a/src/nvim/api/ui_events.in.h b/src/nvim/api/ui_events.in.h
index c2f02c34f8..2bd8792d71 100644
--- a/src/nvim/api/ui_events.in.h
+++ b/src/nvim/api/ui_events.in.h
@@ -118,6 +118,10 @@ void win_viewport(Integer grid, Window win, Integer topline, Integer botline, In
                   Integer curcol, Integer line_count, Integer scroll_delta)
   FUNC_API_SINCE(7) FUNC_API_CLIENT_IGNORE;
 
+void win_viewport_margins(Integer grid, Window win, Integer top, Integer bottom, Integer left,
+                          Integer right)
+  FUNC_API_SINCE(12) FUNC_API_CLIENT_IGNORE;
+
 void win_extmark(Integer grid, Window win, Integer ns_id, Integer mark_id, Integer row, Integer col)
   FUNC_API_SINCE(10) FUNC_API_REMOTE_ONLY;
 
diff --git a/src/nvim/window.c b/src/nvim/window.c
index c9c2124730..6d85e088b5 100644
--- a/src/nvim/window.c
+++ b/src/nvim/window.c
@@ -6744,6 +6744,13 @@ void win_set_inner_size(win_T *wp, bool valid_cursor)
   wp->w_width_outer = (wp->w_width_inner + win_border_width(wp));
   wp->w_winrow_off = wp->w_border_adj[0] + wp->w_winbar_height;
   wp->w_wincol_off = wp->w_border_adj[3];
+
+  if (ui_has(kUIMultigrid)) {
+    ui_call_win_viewport_margins(wp->w_grid_alloc.handle, wp->handle,
+                                 wp->w_winrow_off, wp->w_border_adj[2],
+                                 wp->w_wincol_off, wp->w_border_adj[1]);
+  }
+
   wp->w_redr_status = true;
 }