From: Martin Rudalics <rudalics@gmx.at>
Date: Wed, 16 Oct 2019 09:02:56 +0000 (+0200)
Subject: Handle top margin change in adjust_frame_size
X-Git-Tag: emacs-27.0.90~1034
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=d68e8495e032890fbfd31935b9f660400641f1d9;p=emacs.git

Handle top margin change in adjust_frame_size

* src/frame.c (adjust_frame_size): Handle case where only
pseudo windows changed height so the top margin has to be
adjusted.
* src/window.c (Fset_window_configuration): Call
adjust_frame_size with inhibit 4.
---

diff --git a/src/frame.c b/src/frame.c
index cc76cf4f697..8ca5106cb2a 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -704,18 +704,17 @@ adjust_frame_size (struct frame *f, int new_width, int new_height, int inhibit,
 		inhibit_vertical ? Qt : Qnil));
 
       if (FRAME_TERMINAL (f)->set_window_size_hook)
-        FRAME_TERMINAL (f)->set_window_size_hook (f,
-                                                  0,
-                                                  new_text_width,
-                                                  new_text_height,
-                                                  1);
+        FRAME_TERMINAL (f)->set_window_size_hook
+	  (f, 0, new_text_width, new_text_height, 1);
       f->resized_p = true;
 
       return;
     }
 #endif
 
-  if (new_text_width == old_text_width
+  if ((XWINDOW (FRAME_ROOT_WINDOW (f))->pixel_top
+       == FRAME_TOP_MARGIN_HEIGHT (f))
+      && new_text_width == old_text_width
       && new_text_height == old_text_height
       && new_windows_width == old_windows_width
       && new_windows_height == old_windows_height
diff --git a/src/window.c b/src/window.c
index ba9af3b9b0c..1e6e148bf48 100644
--- a/src/window.c
+++ b/src/window.c
@@ -7129,10 +7129,11 @@ the return value is nil.  Otherwise the value is t.  */)
 	if (NILP (leaf_windows[i]->contents))
 	  free_window_matrices (leaf_windows[i]);
 
-      /* Allow set_window_size_hook again and apply frame size changes
-	 if needed.  */
+      /* Allow set_window_size_hook again and resize frame's windows
+	 if necessary.  But change frame size only to preserve window
+	 minimum sizes.  */
       f->can_set_window_size = true;
-      adjust_frame_size (f, -1, -1, 1, false, Qset_window_configuration);
+      adjust_frame_size (f, -1, -1, 4, false, Qset_window_configuration);
 
       adjust_frame_glyphs (f);
       unblock_input ();