(mac_window) [USE_MAC_TOOLBAR]: Set toolbar_win_gravity.

(x_set_tool_bar_lines) [USE_MAC_TOOLBAR]: Set FRAME_EXTERNAL_TOOL_BAR.

1 files changed, 29 insertions, 0 deletions

diff --git a/src/macfns.c b/src/macfns.c
index b98e2814281..cd571a13c5e 100644
--- a/src/macfns.c
+++ b/src/macfns.c
@@ -1682,6 +1682,25 @@ x_set_tool_bar_lines (f, value, oldval)
   /* Make sure we redisplay all windows in this frame.  */
   ++windows_or_buffers_changed;
 
+#if USE_MAC_TOOLBAR
+  FRAME_TOOL_BAR_LINES (f) = 0;
+  if (nlines)
+    {
+      FRAME_EXTERNAL_TOOL_BAR (f) = 1;
+      if (FRAME_MAC_P (f) && !IsWindowToolbarVisible (FRAME_MAC_WINDOW (f)))
+        /* Make sure next redisplay shows the tool bar.  */
+        XWINDOW (FRAME_SELECTED_WINDOW (f))->update_mode_line = Qt;
+    }
+  else
+    {
+      if (FRAME_EXTERNAL_TOOL_BAR (f))
+        free_frame_tool_bar (f);
+      FRAME_EXTERNAL_TOOL_BAR (f) = 0;
+    }
+
+  return;
+#endif
+
   delta = nlines - FRAME_TOOL_BAR_LINES (f);
 
   /* Don't resize the tool-bar to more than we have room for.  */
@@ -2284,6 +2303,16 @@ mac_window (f)
     XSetWindowBackground (FRAME_MAC_DISPLAY(f), FRAME_MAC_WINDOW (f),
                           FRAME_BACKGROUND_PIXEL (f));
 
+#if USE_MAC_TOOLBAR
+  /* At the moment, the size of the tool bar is not yet known.  We
+     record the gravity value of the newly created window and use it
+     to adjust the position of the window (especially for a negative
+     specification of its vertical position) when the tool bar is
+     first redisplayed.  */
+  if (FRAME_EXTERNAL_TOOL_BAR (f))
+    f->output_data.mac->toolbar_win_gravity = f->win_gravity;
+#endif
+
   validate_x_resource_name ();
 
   /* x_set_name normally ignores requests to set the name if the