Re-apply the current layout when resizing

The TUI has separate code for each possible layout to handle the case
where the terminal window is resized.  With the new layout code, this
can all be replaced with a call to tui_apply_current_layout, which
simply re-applies the current layout.

This results in some small differences in behavior when resizing, so
some tests are updated.

gdb/ChangeLog
2019-12-11  Tom Tromey  <tom@tromey.com>

	* tui/tui-win.c (tui_resize_all): Remove code, call
	tui_apply_current_layout.

gdb/testsuite/ChangeLog
2019-12-11  Tom Tromey  <tom@tromey.com>

	* gdb.tui/resize.exp: Update.
	* gdb.tui/empty.exp (layouts): Update.

Change-Id: I3dc6c02a753d495d9ab5e8213d550a147198ce6f

1 files changed, 2 insertions, 104 deletions

diff --git a/gdb/tui/tui-win.c b/gdb/tui/tui-win.c
index 4339b7e..199f3ba 100644
--- a/gdb/tui/tui-win.c
+++ b/gdb/tui/tui-win.c
@@ -536,13 +536,7 @@ tui_resize_all (void)
   height_diff = screenheight - tui_term_height ();
   if (height_diff || width_diff)
     {
-      enum tui_layout_type cur_layout = tui_current_layout ();
       struct tui_win_info *win_with_focus = tui_win_with_focus ();
-      struct tui_win_info *first_win;
-      struct tui_win_info *second_win;
-      tui_source_window_base *src_win;
-      struct tui_locator_window *locator = tui_locator_win_info_ptr ();
-      int new_height, split_diff, cmd_split_diff, num_wins_displayed = 2;
 
 #ifdef HAVE_RESIZE_TERM
       resize_term (screenheight, screenwidth);
@@ -553,108 +547,12 @@ tui_resize_all (void)
       tui_update_gdb_sizes ();
       tui_set_term_height_to (screenheight);
       tui_set_term_width_to (screenwidth);
-      if (cur_layout == SRC_DISASSEM_COMMAND 
-	  || cur_layout == SRC_DATA_COMMAND
-	  || cur_layout == DISASSEM_DATA_COMMAND)
-	num_wins_displayed++;
-      split_diff = height_diff / num_wins_displayed;
-      cmd_split_diff = split_diff;
-      if (height_diff % num_wins_displayed)
-	{
-	  if (height_diff < 0)
-	    cmd_split_diff--;
-	  else
-           cmd_split_diff++;
-       }
-      /* Now adjust each window.  */
+
       /* erase + clearok are used instead of a straightforward clear as
          AIX 5.3 does not define clear.  */
       erase ();
       clearok (curscr, TRUE);
-      switch (cur_layout)
-       {
-	case SRC_COMMAND:
-	case DISASSEM_COMMAND:
-	  src_win = *(tui_source_windows ().begin ());
-	  /* Check for invalid heights.  */
-	  if (height_diff == 0)
-	    new_height = src_win->height;
-	  else if ((src_win->height + split_diff) >=
-		   (screenheight - MIN_CMD_WIN_HEIGHT - 1))
-	    new_height = screenheight - MIN_CMD_WIN_HEIGHT - 1;
-	  else if ((src_win->height + split_diff) <= 0)
-	    new_height = MIN_WIN_HEIGHT;
-	  else
-	    new_height = src_win->height + split_diff;
-
-	  src_win->resize (new_height, screenwidth, 0, 0);
-
-	  locator->resize (1, screenwidth, 0, new_height);
-
-	  new_height = screenheight - (new_height + 1);
-	  TUI_CMD_WIN->resize (new_height, screenwidth,
-			       0, locator->y + 1);
-	  break;
-	default:
-	  if (cur_layout == SRC_DISASSEM_COMMAND)
-	    {
-	      src_win = TUI_SRC_WIN;
-	      first_win = src_win;
-	      second_win = TUI_DISASM_WIN;
-	    }
-	  else
-	    {
-	      first_win = TUI_DATA_WIN;
-	      src_win = *(tui_source_windows ().begin ());
-	      second_win = src_win;
-	    }
-	  /* Change the first window's height/width.  */
-	  /* Check for invalid heights.  */
-	  if (height_diff == 0)
-	    new_height = first_win->height;
-	  else if ((first_win->height +
-		    second_win->height + (split_diff * 2)) >=
-		   (screenheight - MIN_CMD_WIN_HEIGHT - 1))
-	    new_height = (screenheight - MIN_CMD_WIN_HEIGHT - 1) / 2;
-	  else if ((first_win->height + split_diff) <= 0)
-	    new_height = MIN_WIN_HEIGHT;
-	  else
-	    new_height = first_win->height + split_diff;
-
-	  first_win->resize (new_height, screenwidth, 0, 0);
-
-	  /* Change the second window's height/width.  */
-	  /* Check for invalid heights.  */
-	  if (height_diff == 0)
-	    new_height = second_win->height;
-	  else if ((first_win->height +
-		    second_win->height + (split_diff * 2)) >=
-		   (screenheight - MIN_CMD_WIN_HEIGHT - 1))
-	    {
-	      new_height = screenheight - MIN_CMD_WIN_HEIGHT - 1;
-	      if (new_height % 2)
-		new_height = (new_height / 2) + 1;
-	      else
-		new_height /= 2;
-	    }
-	  else if ((second_win->height + split_diff) <= 0)
-	    new_height = MIN_WIN_HEIGHT;
-	  else
-	    new_height = second_win->height + split_diff;
-
-	  second_win->resize (new_height, screenwidth,
-			      0, first_win->height - 1);
-
-	  locator->resize (1, screenwidth,
-			   0, second_win->y + new_height);
-
-	  /* Change the command window's height/width.  */
-	  new_height = screenheight - (locator->y + 1);
-	  TUI_CMD_WIN->resize (new_height, screenwidth,
-			       0, locator->y + 1);
-	  break;
-	}
-
+      tui_apply_current_layout ();
       tui_delete_invisible_windows ();
       /* Turn keypad back on, unless focus is in the command
 	 window.  */