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[binutils-gdb] TUI resize unification


*** TEST RESULTS FOR COMMIT 3df505f60eacd2c931092c7007f084d27583f9e5 ***

commit 3df505f60eacd2c931092c7007f084d27583f9e5
Author:     Tom Tromey <tom@tromey.com>
AuthorDate: Tue Jul 9 17:29:13 2019 -0600
Commit:     Tom Tromey <tom@tromey.com>
CommitDate: Thu Aug 15 14:17:11 2019 -0600

    TUI resize unification
    
    The TUI currently has two different ways to resize a window: the
    resize method, and the methods make_invisible_and_set_new_height and
    make_visible_with_new_height.
    
    There's no deep reason to have two different ways to resize a window,
    so this patch unifies them, leaving just the "resize" method.
    
    This also changes the locator to be handled more like an ordinary
    window and less like an adjunct of the associated source window.
    
    gdb/ChangeLog
    2019-08-15  Tom Tromey  <tom@tromey.com>
    
            * tui/tui-io.c (tui_puts_internal): Check TUI_CMD_WIN before
            calling update_cmdwin_start_line.
            * tui/tui-winsource.h (struct tui_source_window_base)
            <do_make_visible_with_new_height, set_new_height>: Don't declare.
            <rerender>: Declare.
            * tui/tui-winsource.c (tui_source_window_base::update_tab_width):
            Call rerender.
            (tui_source_window_base::set_new_height): Remove.
            (tui_source_window_base::rerender): Rename from
            do_make_visible_with_new_height.
            * tui/tui-win.c (tui_resize_all, tui_adjust_win_heights): Use
            resize method.
            (tui_win_info::make_invisible_and_set_new_height)
            (tui_win_info::make_visible_with_new_height): Remove.
            * tui/tui-stack.h (struct tui_locator_window) <rerender>:
            Declare.
            * tui/tui-stack.c (tui_locator_window::rerender): New method.
            * tui/tui-regs.h (struct tui_data_window) <set_new_height,
            do_make_visible_with_new_height>: Don't declare.
            <rerender>: Declare.
            * tui/tui-regs.c (tui_data_window::rerender): Rename from
            set_new_height.
            (tui_data_window::do_make_visible_with_new_height): Remove.
            * tui/tui-layout.c (show_source_disasm_command, show_data): Don't
            call tui_show_locator_content.
            (tui_gen_win_info::resize): Call rerender.
            (show_source_or_disasm_and_command): Don't call
            tui_show_locator_content.
            * tui/tui-data.h (struct tui_gen_win_info) <rerender>: New
            method.
            (struct tui_win_info) <rerender>: Declare.
            <set_new_height, make_invisible_and_set_new_height,
            make_visible_with_new_height>: Don't declare.
            * tui/tui-data.c (tui_win_list::rerender): New method.
            * tui/tui-command.h (struct tui_cmd_window)
            <do_make_visible_with_new_height>: Don't declare.
            * tui/tui-command.c
            (tui_cmd_window::do_make_visible_with_new_height): Remove.
    
    gdb/testsuite/ChangeLog
    2019-08-15  Tom Tromey  <tom@tromey.com>
    
            * gdb.tui/empty.exp: Enable resizing tests.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index d11753f600..8512e9e332 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,44 @@
+2019-08-15  Tom Tromey  <tom@tromey.com>
+
+	* tui/tui-io.c (tui_puts_internal): Check TUI_CMD_WIN before
+	calling update_cmdwin_start_line.
+	* tui/tui-winsource.h (struct tui_source_window_base)
+	<do_make_visible_with_new_height, set_new_height>: Don't declare.
+	<rerender>: Declare.
+	* tui/tui-winsource.c (tui_source_window_base::update_tab_width):
+	Call rerender.
+	(tui_source_window_base::set_new_height): Remove.
+	(tui_source_window_base::rerender): Rename from
+	do_make_visible_with_new_height.
+	* tui/tui-win.c (tui_resize_all, tui_adjust_win_heights): Use
+	resize method.
+	(tui_win_info::make_invisible_and_set_new_height)
+	(tui_win_info::make_visible_with_new_height): Remove.
+	* tui/tui-stack.h (struct tui_locator_window) <rerender>:
+	Declare.
+	* tui/tui-stack.c (tui_locator_window::rerender): New method.
+	* tui/tui-regs.h (struct tui_data_window) <set_new_height,
+	do_make_visible_with_new_height>: Don't declare.
+	<rerender>: Declare.
+	* tui/tui-regs.c (tui_data_window::rerender): Rename from
+	set_new_height.
+	(tui_data_window::do_make_visible_with_new_height): Remove.
+	* tui/tui-layout.c (show_source_disasm_command, show_data): Don't
+	call tui_show_locator_content.
+	(tui_gen_win_info::resize): Call rerender.
+	(show_source_or_disasm_and_command): Don't call
+	tui_show_locator_content.
+	* tui/tui-data.h (struct tui_gen_win_info) <rerender>: New
+	method.
+	(struct tui_win_info) <rerender>: Declare.
+	<set_new_height, make_invisible_and_set_new_height,
+	make_visible_with_new_height>: Don't declare.
+	* tui/tui-data.c (tui_win_list::rerender): New method.
+	* tui/tui-command.h (struct tui_cmd_window)
+	<do_make_visible_with_new_height>: Don't declare.
+	* tui/tui-command.c
+	(tui_cmd_window::do_make_visible_with_new_height): Remove.
+
 2019-08-15  Tom Tromey  <tromey@adacore.com>
 
 	* ada-exp.y (convert_char_literal): Handle "Q%c" encoding.
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index def8a3174b..294243a661 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2019-08-15  Tom Tromey  <tom@tromey.com>
+
+	* gdb.tui/empty.exp: Enable resizing tests.
+
 2019-08-15  Tom Tromey  <tromey@adacore.com>
 
 	* gdb.ada/char_enum.exp: Add regression tests.
diff --git a/gdb/testsuite/gdb.tui/empty.exp b/gdb/testsuite/gdb.tui/empty.exp
index 90e26b3316..8c50456280 100644
--- a/gdb/testsuite/gdb.tui/empty.exp
+++ b/gdb/testsuite/gdb.tui/empty.exp
@@ -39,14 +39,14 @@ set layouts {
 	    {"no source" "No Source Available"}
 	    {"no regs" "Register Values Unavailable"}
 	}}
-    {asm asm {{3 0 77 15}} {{3 0 87 24}}
+    {asm asm {{3 0 77 15}} {{3 0 87 23}}
 	{"no asm" "No Assembly Available"}}
     {regs asm-regs {{0 0 80 8} {3 7 77 9}} {{0 0 90 13} {3 13 87 14}}
 	{
 	    {"no asm" "No Assembly Available"}
 	    {"no regs" "Register Values Unavailable"}
 	}}
-    {split split {{3 0 77 8} {3 7 77 9}} {{3 0 87 14} {3 14 87 14}}
+    {split split {{3 0 77 8} {3 7 77 9}} {{3 0 87 13} {3 13 87 14}}
 	{
 	    {"no source" "No Source Available"}
 	    {"no asm" "No Assembly Available"}
@@ -91,13 +91,11 @@ foreach layout $layouts {
 	    check_text $text_list
 	}
 
-	# FIXME: resizing is broken enough that we don't test it for
-	# now.
-	# Term::resize 40 90
-	# with_test_prefix 90x40 {
-	#     check_boxes $large_boxes
-	#     check_text $text_list
-	# }
-	# Term::resize 24 80
+	Term::resize 40 90
+	with_test_prefix 90x40 {
+	    check_boxes $large_boxes
+	    check_text $text_list
+	}
+	Term::resize 24 80
     }
 }
diff --git a/gdb/tui/tui-command.c b/gdb/tui/tui-command.c
index ddbd8bccea..f2040a7541 100644
--- a/gdb/tui/tui-command.c
+++ b/gdb/tui/tui-command.c
@@ -31,18 +31,6 @@
 
 /* See tui-command.h.  */
 
-void
-tui_cmd_window::do_make_visible_with_new_height ()
-{
-#ifdef HAVE_WRESIZE
-  wresize (handle, height, width);
-#endif
-  mvwin (handle, origin.y, origin.x);
-  wmove (handle, 0, 0);
-}
-
-/* See tui-command.h.  */
-
 int
 tui_cmd_window::max_height () const
 {
diff --git a/gdb/tui/tui-command.h b/gdb/tui/tui-command.h
index 1fce0a1812..79516941c9 100644
--- a/gdb/tui/tui-command.h
+++ b/gdb/tui/tui-command.h
@@ -74,8 +74,6 @@ protected:
   void do_scroll_horizontal (int num_to_scroll) override
   {
   }
-
-  void do_make_visible_with_new_height () override;
 };
 
 /* Refresh the command window.  */
diff --git a/gdb/tui/tui-data.c b/gdb/tui/tui-data.c
index fe1f73f02e..dc2c810b0c 100644
--- a/gdb/tui/tui-data.c
+++ b/gdb/tui/tui-data.c
@@ -245,3 +245,9 @@ tui_gen_win_info::~tui_gen_win_info ()
   tui_delete_win (handle);
   xfree (title);
 }
+
+void
+tui_win_info::rerender ()
+{
+  check_and_display_highlight_if_needed ();
+}
diff --git a/gdb/tui/tui-data.h b/gdb/tui/tui-data.h
index 338867917e..6c7ab056b4 100644
--- a/gdb/tui/tui-data.h
+++ b/gdb/tui/tui-data.h
@@ -46,6 +46,12 @@ protected:
   {
   }
 
+  /* This is called after the window is resized, and should update the
+     window's contents.  */
+  virtual void rerender ()
+  {
+  }
+
 public:
 
   virtual ~tui_gen_win_info ();
@@ -164,9 +170,7 @@ protected:
      left_scroll and right_scroll.  */
   virtual void do_scroll_horizontal (int num_to_scroll) = 0;
 
-  /* Called after make_visible_with_new_height sets the new height.
-     Should update the window.  */
-  virtual void do_make_visible_with_new_height () = 0;
+  void rerender () override;
 
 public:
 
@@ -180,12 +184,6 @@ public:
   {
   }
 
-  /* Called after a TUI window is given a new height; this updates any
-     related auxiliary windows.  */
-  virtual void set_new_height (int height)
-  {
-  }
-
   /* Compute the maximum height of this window.  */
   virtual int max_height () const;
 
@@ -194,14 +192,6 @@ public:
   {
   }
 
-  /* Function make the target window (and auxiliary windows associated
-     with the target) invisible, and set the new height and
-     location.  */
-  void make_invisible_and_set_new_height (int height);
-
-  /* Make the window visible after the height has been changed.  */
-  void make_visible_with_new_height ();
-
   /* Set whether this window is highglighted.  */
   void set_highlight (bool highlight)
   {
diff --git a/gdb/tui/tui-io.c b/gdb/tui/tui-io.c
index 938f5ab158..7bdba3f64f 100644
--- a/gdb/tui/tui-io.c
+++ b/gdb/tui/tui-io.c
@@ -495,7 +495,8 @@ tui_puts_internal (WINDOW *w, const char *string, int *height)
 	    }
 	}
     }
-  update_cmdwin_start_line ();
+  if (TUI_CMD_WIN != nullptr && w == TUI_CMD_WIN->handle)
+    update_cmdwin_start_line ();
   if (saw_nl)
     wrefresh (w);
 }
diff --git a/gdb/tui/tui-layout.c b/gdb/tui/tui-layout.c
index e0e804bac2..d81b8f9aa4 100644
--- a/gdb/tui/tui-layout.c
+++ b/gdb/tui/tui-layout.c
@@ -522,7 +522,6 @@ show_source_disasm_command (void)
 		   (src_height + asm_height) - 1);
   TUI_SRC_WIN->m_has_locator = false;
   TUI_DISASM_WIN->m_has_locator = true;
-  tui_show_locator_content ();
   TUI_DISASM_WIN->show_source_content ();
 
   if (TUI_CMD_WIN == NULL)
@@ -580,7 +579,6 @@ show_data (enum tui_layout_type new_layout)
 		       0, total_height);
 
   base->m_has_locator = true;
-  tui_show_locator_content ();
   current_layout = new_layout;
 }
 
@@ -611,6 +609,8 @@ tui_gen_win_info::resize (int height_, int width_,
 
   if (handle == nullptr)
     tui_make_window (this);
+
+  rerender ();
 }
 
 /* Show the Source/Command or the Disassem layout.  */
@@ -651,7 +651,6 @@ show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 		    0);
 
   win_info->m_has_locator = true;
-  tui_show_locator_content ();
   win_info->show_source_content ();
 
   if (TUI_CMD_WIN == NULL)
diff --git a/gdb/tui/tui-regs.c b/gdb/tui/tui-regs.c
index bb8d545c47..89faefa8f6 100644
--- a/gdb/tui/tui-regs.c
+++ b/gdb/tui/tui-regs.c
@@ -521,7 +521,7 @@ tui_data_window::do_scroll_vertical (int num_to_scroll)
 /* See tui-regs.h.  */
 
 void
-tui_data_window::set_new_height (int height)
+tui_data_window::rerender ()
 {
   /* Delete all data item windows.  */
   for (auto &&win : regs_content)
@@ -529,13 +529,6 @@ tui_data_window::set_new_height (int height)
       tui_delete_win (win->handle);
       win->handle = NULL;
     }
-}
-
-/* See tui-regs.h.  */
-
-void
-tui_data_window::do_make_visible_with_new_height ()
-{
   display_all_data ();
 }
 
diff --git a/gdb/tui/tui-regs.h b/gdb/tui/tui-regs.h
index b2abfc2078..7b0bb505a8 100644
--- a/gdb/tui/tui-regs.h
+++ b/gdb/tui/tui-regs.h
@@ -55,8 +55,6 @@ struct tui_data_window : public tui_win_info
 
   void refresh_all () override;
 
-  void set_new_height (int height) override;
-
   void refresh_window () override;
 
   const char *name () const override
@@ -111,7 +109,6 @@ protected:
   void do_scroll_horizontal (int num_to_scroll) override
   {
   }
-  void do_make_visible_with_new_height () override;
 
   /* Return the index of the first element displayed.  If none are
      displayed, then return -1.  */
@@ -122,6 +119,8 @@ protected:
      of the display height.  This function checks that we won't
      display off the end of the register display.  */
   void display_reg_element_at_line (int start_element_no, int start_line_no);
+
+  void rerender () override;
 };
 
 extern void tui_check_register_values (struct frame_info *);
diff --git a/gdb/tui/tui-stack.c b/gdb/tui/tui-stack.c
index f4d6d3865e..001133c7b5 100644
--- a/gdb/tui/tui-stack.c
+++ b/gdb/tui/tui-stack.c
@@ -277,6 +277,11 @@ tui_show_locator_content (void)
     }
 }
 
+void
+tui_locator_window::rerender ()
+{
+  tui_show_locator_content ();
+}
 
 /* Set the filename portion of the locator.  */
 static void
diff --git a/gdb/tui/tui-stack.h b/gdb/tui/tui-stack.h
index 51c976b2f5..951cf2c407 100644
--- a/gdb/tui/tui-stack.h
+++ b/gdb/tui/tui-stack.h
@@ -43,6 +43,8 @@ struct tui_locator_window : public tui_gen_win_info
     proc_name[0] = 0;
   }
 
+  void rerender () override;
+
   char full_name[MAX_LOCATOR_ELEMENT_LEN];
   char proc_name[MAX_LOCATOR_ELEMENT_LEN];
   int line_no = 0;
diff --git a/gdb/tui/tui-win.c b/gdb/tui/tui-win.c
index aa07dfc822..872e002b6c 100644
--- a/gdb/tui/tui-win.c
+++ b/gdb/tui/tui-win.c
@@ -38,6 +38,7 @@
 #include "tui/tui-io.h"
 #include "tui/tui-command.h"
 #include "tui/tui-data.h"
+#include "tui/tui-layout.h"
 #include "tui/tui-wingeneral.h"
 #include "tui/tui-stack.h"
 #include "tui/tui-regs.h"
@@ -572,47 +573,38 @@ tui_resize_all (void)
 	case SRC_COMMAND:
 	case DISASSEM_COMMAND:
 	  src_win = *(tui_source_windows ().begin ());
-	  first_win = src_win;
-	  first_win->width += width_diff;
-	  locator->width += width_diff;
 	  /* Check for invalid heights.  */
 	  if (height_diff == 0)
-	    new_height = first_win->height;
-	  else if ((first_win->height + split_diff) >=
+	    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 ((first_win->height + split_diff) <= 0)
+	  else if ((src_win->height + split_diff) <= 0)
 	    new_height = MIN_WIN_HEIGHT;
 	  else
-	    new_height = first_win->height + split_diff;
+	    new_height = src_win->height + split_diff;
+
+	  src_win->resize (new_height, screenwidth, 0, 0);
 
-	  locator->origin.y = new_height + 1;
-	  first_win->make_invisible_and_set_new_height (new_height);
-	  TUI_CMD_WIN->origin.y = locator->origin.y + 1;
-	  TUI_CMD_WIN->width += width_diff;
-	  new_height = screenheight - TUI_CMD_WIN->origin.y;
-	  TUI_CMD_WIN->make_invisible_and_set_new_height (new_height);
-	  first_win->make_visible_with_new_height ();
-	  TUI_CMD_WIN->make_visible_with_new_height ();
-	  if (src_win->content.empty ())
-	    src_win->erase_source_content ();
+	  locator->resize (2 /* 1 */, screenwidth,
+			   0, new_height);
+
+	  new_height = screenheight - (new_height + 1);
+	  TUI_CMD_WIN->resize (new_height, screenwidth,
+			       0, locator->origin.y + 1);
 	  break;
 	default:
 	  if (cur_layout == SRC_DISASSEM_COMMAND)
 	    {
 	      src_win = TUI_SRC_WIN;
 	      first_win = src_win;
-	      first_win->width += width_diff;
 	      second_win = TUI_DISASM_WIN;
-	      second_win->width += width_diff;
 	    }
 	  else
 	    {
 	      first_win = TUI_DATA_WIN;
-	      first_win->width += width_diff;
 	      src_win = *(tui_source_windows ().begin ());
 	      second_win = src_win;
-	      second_win->width += width_diff;
 	    }
 	  /* Change the first window's height/width.  */
 	  /* Check for invalid heights.  */
@@ -626,9 +618,8 @@ tui_resize_all (void)
 	    new_height = MIN_WIN_HEIGHT;
 	  else
 	    new_height = first_win->height + split_diff;
-	  first_win->make_invisible_and_set_new_height (new_height);
 
-	  locator->width += width_diff;
+	  first_win->resize (new_height, screenwidth, 0, 0);
 
 	  /* Change the second window's height/width.  */
 	  /* Check for invalid heights.  */
@@ -648,18 +639,17 @@ tui_resize_all (void)
 	    new_height = MIN_WIN_HEIGHT;
 	  else
 	    new_height = second_win->height + split_diff;
-	  second_win->origin.y = first_win->height - 1;
-	  second_win->make_invisible_and_set_new_height (new_height);
+
+	  second_win->resize (new_height, screenwidth,
+			      0, first_win->height - 1);
+
+	  locator->resize (2 /* 1 */, screenwidth,
+			   0, second_win->origin.y + new_height);
 
 	  /* Change the command window's height/width.  */
-	  TUI_CMD_WIN->origin.y = locator->origin.y + 1;
-	  TUI_CMD_WIN->make_invisible_and_set_new_height (TUI_CMD_WIN->height
-							  + cmd_split_diff);
-	  first_win->make_visible_with_new_height ();
-	  second_win->make_visible_with_new_height ();
-	  TUI_CMD_WIN->make_visible_with_new_height ();
-	  if (src_win->content.empty ())
-	    src_win->erase_source_content ();
+	  new_height = screenheight - (locator->origin.y + 1);
+	  TUI_CMD_WIN->resize (new_height, screenwidth,
+			       0, locator->origin.y + 1);
 	  break;
 	}
 
@@ -1036,6 +1026,7 @@ tui_adjust_win_heights (struct tui_win_info *primary_win_info,
 	  struct tui_win_info *win_info;
 	  struct tui_locator_window *locator = tui_locator_win_info_ptr ();
 	  enum tui_layout_type cur_layout = tui_current_layout ();
+	  int width = tui_term_width ();
 
 	  diff = (new_height - primary_win_info->height) * (-1);
 	  if (cur_layout == SRC_COMMAND 
@@ -1043,7 +1034,8 @@ tui_adjust_win_heights (struct tui_win_info *primary_win_info,
 	    {
 	      struct tui_win_info *src_win_info;
 
-	      primary_win_info->make_invisible_and_set_new_height (new_height);
+	      primary_win_info->resize (new_height, width,
+					0, primary_win_info->origin.y);
 	      if (primary_win_info->type == CMD_WIN)
 		{
 		  win_info = *(tui_source_windows ().begin ());
@@ -1054,11 +1046,9 @@ tui_adjust_win_heights (struct tui_win_info *primary_win_info,
 		  win_info = tui_win_list[CMD_WIN];
 		  src_win_info = primary_win_info;
 		}
-	      win_info->make_invisible_and_set_new_height
-		(win_info->height + diff);
+	      win_info->resize (win_info->height + diff, width,
+				0, win_info->origin.y);
 	      TUI_CMD_WIN->origin.y = locator->origin.y + 1;
-	      win_info->make_visible_with_new_height ();
-	      primary_win_info->make_visible_with_new_height ();
 	      if ((src_win_info->type == SRC_WIN
 		   || src_win_info->type == DISASSEM_WIN))
 		{
@@ -1121,13 +1111,18 @@ tui_adjust_win_heights (struct tui_win_info *primary_win_info,
 		      second_split_diff++;
 		      first_split_diff--;
 		    }
-		  first_win->make_invisible_and_set_new_height
-		    (first_win->height + first_split_diff);
-		  second_win->origin.y = first_win->height - 1;
-		  second_win->make_invisible_and_set_new_height
-		    (second_win->height + second_split_diff);
-		  TUI_CMD_WIN->origin.y = locator->origin.y + 1;
-		  TUI_CMD_WIN->make_invisible_and_set_new_height (new_height);
+		  first_win->resize (first_win->height + first_split_diff,
+				     width,
+				     0, first_win->origin.y);
+		  second_win->resize (second_win->height + second_split_diff,
+				      width,
+				      0, first_win->height - 1);
+		  locator->resize (2 /* 1 */, width,
+				   0, (second_win->origin.y
+				       + second_win->height + 1));
+
+		  TUI_CMD_WIN->resize (new_height, width,
+				       0, locator->origin.y + 1);
 		}
 	      else
 		{
@@ -1148,26 +1143,26 @@ tui_adjust_win_heights (struct tui_win_info *primary_win_info,
 			}
 		    }
 		  if (primary_win_info == first_win)
-		    first_win->make_invisible_and_set_new_height (new_height);
+		    first_win->resize (new_height, width, 0, 0);
 		  else
-		    first_win->make_invisible_and_set_new_height
-		      (first_win->height);
+		    first_win->resize (first_win->height, width, 0, 0);
 		  second_win->origin.y = first_win->height - 1;
 		  if (primary_win_info == second_win)
-		    second_win->make_invisible_and_set_new_height (new_height);
+		    second_win->resize (new_height, width,
+					0, first_win->height - 1);
 		  else
-		    second_win->make_invisible_and_set_new_height
-		      (second_win->height);
+		    second_win->resize (second_win->height, width,
+					0, first_win->height - 1);
+		  locator->resize (2 /* 1 */, width,
+				   0, (second_win->origin.y
+				       + second_win->height + 1));
 		  TUI_CMD_WIN->origin.y = locator->origin.y + 1;
 		  if ((TUI_CMD_WIN->height + diff) < 1)
-		    TUI_CMD_WIN->make_invisible_and_set_new_height (1);
+		    TUI_CMD_WIN->resize (1, width, 0, locator->origin.y + 1);
 		  else
-		    TUI_CMD_WIN->make_invisible_and_set_new_height
-		      (TUI_CMD_WIN->height + diff);
+		    TUI_CMD_WIN->resize (TUI_CMD_WIN->height + diff, width,
+					 0, locator->origin.y + 1);
 		}
-	      TUI_CMD_WIN->make_visible_with_new_height ();
-	      second_win->make_visible_with_new_height ();
-	      first_win->make_visible_with_new_height ();
 	      if (src1 != nullptr && src1->content.empty ())
 		src1->erase_source_content ();
 	      if (second_win->content.empty ())
@@ -1179,36 +1174,6 @@ tui_adjust_win_heights (struct tui_win_info *primary_win_info,
   return status;
 }
 
-
-/* See tui-data.h.  */
-
-void
-tui_win_info::make_invisible_and_set_new_height (int height_)
-{
-  make_visible (false);
-  height = height_;
-  if (height > 1)
-    viewport_height = height - 1;
-  else
-    viewport_height = height;
-  if (this != TUI_CMD_WIN)
-    viewport_height--;
-
-  /* Now deal with the auxiliary windows associated with win_info.  */
-  set_new_height (height);
-}
-
-
-/* See tui-data.h.  */
-
-void
-tui_win_info::make_visible_with_new_height ()
-{
-  make_visible (true);
-  check_and_display_highlight_if_needed ();
-  do_make_visible_with_new_height ();
-}
-
 /* See tui-data.h.  */
 
 int
diff --git a/gdb/tui/tui-winsource.c b/gdb/tui/tui-winsource.c
index 613213fab5..b6ce652d09 100644
--- a/gdb/tui/tui-winsource.c
+++ b/gdb/tui/tui-winsource.c
@@ -315,42 +315,13 @@ tui_source_window_base::refresh_all ()
 void
 tui_source_window_base::update_tab_width ()
 {
-  /* We don't really change the height of any windows, but
-     calling these 2 functions causes a complete regeneration
-     and redisplay of the window's contents, which will take
-     the new tab width into account.  */
-  make_invisible_and_set_new_height (height);
-  make_visible_with_new_height ();
+  werase (handle);
+  rerender ();
 }
 
-/* See tui-data.h.  */
-
-void
-tui_source_window_base::set_new_height (int height)
-{
-  execution_info->make_visible (false);
-  execution_info->height = height;
-  execution_info->origin.y = origin.y;
-  if (height > 1)
-    execution_info->viewport_height = height - 1;
-  else
-    execution_info->viewport_height = height;
-  execution_info->viewport_height--;
-
-  if (m_has_locator)
-    {
-      tui_locator_window *gen_win_info = tui_locator_win_info_ptr ();
-      gen_win_info->make_visible (false);
-      gen_win_info->origin.y = origin.y + height;
-    }
-}
-
-/* See tui-data.h.  */
-
 void
-tui_source_window_base::do_make_visible_with_new_height ()
+tui_source_window_base::rerender ()
 {
-  execution_info->make_visible (true);
   if (!content.empty ())
     {
       struct tui_line_or_address line_or_addr;
@@ -382,11 +353,8 @@ tui_source_window_base::do_make_visible_with_new_height ()
 	}
       tui_update_source_window (this, gdbarch, s, line, TRUE);
     }
-  if (m_has_locator)
-    {
-      tui_locator_win_info_ptr ()->make_visible (true);
-      tui_show_locator_content ();
-    }
+  else
+    erase_source_content ();
 }
 
 /* See tui-data.h.  */
diff --git a/gdb/tui/tui-winsource.h b/gdb/tui/tui-winsource.h
index 9945e9f9b0..7304e726a7 100644
--- a/gdb/tui/tui-winsource.h
+++ b/gdb/tui/tui-winsource.h
@@ -98,11 +98,12 @@ protected:
   DISABLE_COPY_AND_ASSIGN (tui_source_window_base);
 
   void do_scroll_horizontal (int num_to_scroll) override;
-  void do_make_visible_with_new_height () override;
 
   /* Erase the content and display STRING.  */
   void do_erase_source_content (const char *string);
 
+  void rerender () override;
+
 public:
 
   void clear_detail ();
@@ -118,8 +119,6 @@ public:
   /* Set the location of the execution point.  */
   void set_is_exec_point_at (struct tui_line_or_address l);
 
-  void set_new_height (int height) override;
-
   void update_tab_width () override;
 
   virtual bool location_matches_p (struct bp_location *loc, int line_no) = 0;


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