Remove tui_default_win_viewport_height

tui_default_win_viewport_height was only called from a single spot,
for a single type of window.  This patch removes the function and
moves the logic into the sole caller.

gdb/ChangeLog
2019-10-09  Tom Tromey  <tom@tromey.com>

	* tui/tui-disasm.c (tui_get_low_disassembly_address): Compute
	window height directly.
	* tui/tui-layout.h (tui_default_win_viewport_height): Don't
	declare.
	* tui/tui-layout.c (tui_default_win_height): Remove.
	(tui_default_win_viewport_height): Remove.

3 files changed, 9 insertions, 63 deletions

diff --git a/gdb/tui/tui-disasm.c b/gdb/tui/tui-disasm.c
index 51616bc..33a3ba1 100644
--- a/gdb/tui/tui-disasm.c
+++ b/gdb/tui/tui-disasm.c
@@ -28,6 +28,7 @@
 #include "source.h"
 #include "disasm.h"
 #include "tui/tui.h"
+#include "tui/tui-command.h"
 #include "tui/tui-data.h"
 #include "tui/tui-win.h"
 #include "tui/tui-layout.h"
@@ -325,7 +326,14 @@ tui_get_low_disassembly_address (struct gdbarch *gdbarch,
 
   /* Determine where to start the disassembly so that the pc is about
      in the middle of the viewport.  */
-  pos = tui_default_win_viewport_height (DISASSEM_WIN, DISASSEM_COMMAND) / 2;
+  if (tui_win_list[DISASSEM_WIN] != NULL)
+    pos = tui_win_list[DISASSEM_WIN]->height;
+  else if (TUI_CMD_WIN == NULL)
+    pos = tui_term_height () / 2 - 2;
+  else
+    pos = tui_term_height () - TUI_CMD_WIN->height - 2;
+  pos = (pos - 2) / 2;
+
   pc = tui_find_disassembly_address (gdbarch, pc, -pos);
 
   if (pc < low)
diff --git a/gdb/tui/tui-layout.c b/gdb/tui/tui-layout.c
index 7aa670e..ccc750e 100644
--- a/gdb/tui/tui-layout.c
+++ b/gdb/tui/tui-layout.c
@@ -233,66 +233,6 @@ tui_add_win_to_layout (enum tui_win_type type)
     }
 }
 
-
-/* Answer the height of a window.  If it hasn't been created yet,
-   answer what the height of a window would be based upon its type and
-   the layout.  */
-static int
-tui_default_win_height (enum tui_win_type type, 
-			enum tui_layout_type layout)
-{
-  int h;
-
-  if (tui_win_list[type] != NULL)
-    h = tui_win_list[type]->height;
-  else
-    {
-      switch (layout)
-	{
-	case SRC_COMMAND:
-	case DISASSEM_COMMAND:
-	  if (TUI_CMD_WIN == NULL)
-	    h = tui_term_height () / 2;
-	  else
-	    h = tui_term_height () - TUI_CMD_WIN->height;
-	  break;
-	case SRC_DISASSEM_COMMAND:
-	case SRC_DATA_COMMAND:
-	case DISASSEM_DATA_COMMAND:
-	  if (TUI_CMD_WIN == NULL)
-	    h = tui_term_height () / 3;
-	  else
-	    h = (tui_term_height () - TUI_CMD_WIN->height) / 2;
-	  break;
-	default:
-	  h = 0;
-	  break;
-	}
-    }
-
-  return h;
-}
-
-
-/* Answer the height of a window.  If it hasn't been created yet,
-   answer what the height of a window would be based upon its type and
-   the layout.  */
-int
-tui_default_win_viewport_height (enum tui_win_type type,
-				 enum tui_layout_type layout)
-{
-  int h;
-
-  h = tui_default_win_height (type, layout);
-
-  if (type == CMD_WIN)
-    h -= 1;
-  else
-    h -= 2;
-
-  return h;
-}
-
 /* Complete possible layout names.  TEXT is the complete text entered so
    far, WORD is the word currently being completed.  */
 
diff --git a/gdb/tui/tui-layout.h b/gdb/tui/tui-layout.h
index a7e1e90..23f05f3 100644
--- a/gdb/tui/tui-layout.h
+++ b/gdb/tui/tui-layout.h
@@ -26,8 +26,6 @@
 #include "tui/tui-data.h"
 
 extern void tui_add_win_to_layout (enum tui_win_type);
-extern int tui_default_win_viewport_height (enum tui_win_type,
-					    enum tui_layout_type);
 extern void tui_set_layout (enum tui_layout_type);
 
 #endif /* TUI_TUI_LAYOUT_H */