feat: implement a working WinScrolled autocmd

1 files changed, 9 insertions, 0 deletions

diff --git a/src/nvim/buffer_defs.h b/src/nvim/buffer_defs.h
index 1223f2bdab..ba71ac6b2b 100644
--- a/src/nvim/buffer_defs.h
+++ b/src/nvim/buffer_defs.h
@@ -1204,6 +1204,15 @@ struct window_S {
   colnr_T w_skipcol;                // starting column when a single line
                                     // doesn't fit in the window
 
+  /*
+   * "w_last_topline" and "w_last_leftcol" are used to determine if
+   * a Scroll autocommand should be emitted.
+   */
+  linenr_T w_last_topline;          ///< last known value for topline
+  colnr_T w_last_leftcol;          ///< last known value for leftcol
+  int w_last_width;                 ///< last known value for width
+  int w_last_height;                ///< last known value for height
+
   //
   // Layout of the window in the screen.
   // May need to add "msg_scrolled" to "w_winrow" in rare situations.