Add button height auto adaptation

nanovna.h

@@ -517,23 +517,19 @@ extern uint16_t graph_bottom;
 // Menu Button
 // Maximum menu buttons count
 #ifdef TINYSA4
-#define MENU_BUTTON_MAX        12
-#define MENU_BUTTON_HEIGHT     (LCD_HEIGHT/ 9-1)
-#define MENU_BUTTON_HEIGHT_10  (LCD_HEIGHT/10-1)
-#define MENU_BUTTON_HEIGHT_11  (LCD_HEIGHT/11-1)
-#define MENU_BUTTON_HEIGHT_12  (LCD_HEIGHT/12-1)
+#define MENU_BUTTON_MAX        16
+#define MENU_BUTTON_MIN         9
 #else
-#define MENU_BUTTON_MAX        12
-#define MENU_BUTTON_HEIGHT     (LCD_HEIGHT/ 8-1)
-#define MENU_BUTTON_HEIGHT_10  (LCD_HEIGHT/10-1)
-#define MENU_BUTTON_HEIGHT_11  (LCD_HEIGHT/11-1)
-#define MENU_BUTTON_HEIGHT_12  (LCD_HEIGHT/12-1)
+#define MENU_BUTTON_MAX        16
+#define MENU_BUTTON_MIN         8
 #endif
 #define MENU_BUTTON_WIDTH      80
 #define MENU_BUTTON_BORDER      1
 #define KEYBOARD_BUTTON_BORDER  2
 #define FORM_BUTTON_BORDER      2
 
+#define MENU_BUTTON_HEIGHT_N(n)   (LCD_HEIGHT/(n)-1)
+
 // Define message box width
 #define MESSAGE_BOX_WIDTH     180
 

ui.c

@@ -64,7 +64,7 @@ static uint16_t last_button = 0b0000;
 static uint32_t last_button_down_ticks;
 static uint32_t last_button_repeat_ticks;
 
-static uint16_t menu_button_height = MENU_BUTTON_HEIGHT;
+static uint16_t menu_button_height = MENU_BUTTON_HEIGHT_N(MENU_BUTTON_MIN);
 volatile uint8_t operation_requested = OP_NONE;
 
 int8_t previous_marker = MARKER_INVALID;
@@ -818,9 +818,9 @@ ensure_selection(void)
   if (selection <  0) selection =  -1;
   if (selection >= i) selection = i-1;
   if (MT_MASK(menu[0].type) == MT_TITLE && selection == 0) selection = 1;
-
-  static const uint8_t button_h[] = {MENU_BUTTON_HEIGHT, MENU_BUTTON_HEIGHT_10, MENU_BUTTON_HEIGHT_11, MENU_BUTTON_HEIGHT_12};
-  menu_button_height = button_h[menu[i].data&3];
+  if (i <  MENU_BUTTON_MIN) i = MENU_BUTTON_MIN;
+  if (i >= MENU_BUTTON_MAX) i = MENU_BUTTON_MAX;
+  menu_button_height = MENU_BUTTON_HEIGHT_N(i);
 }
 
 static void

ui_sa.c

@@ -2090,7 +2090,7 @@ static const menuitem_t menu_rbw[] = {
   { MT_ADV_CALLBACK, 7, "%sHz",   menu_rbw_acb},
   { MT_ADV_CALLBACK, 8, "%sHz",   menu_rbw_acb},
   { MT_CANCEL,  0, S_LARROW" BACK", NULL },
-  { MT_NONE, MENU_BUTTON_HEIGHT_10, NULL, NULL } // sentinel
+  { MT_NONE, 0, NULL, NULL } // sentinel
 #else
   { MT_ADV_CALLBACK, 1, "%4dkHz",   menu_rbw_acb},
   { MT_ADV_CALLBACK, 2, "%4dkHz",   menu_rbw_acb},