Better Classic UI touch resolution (#20004)

Marlin/src/lcd/touch/touch_buttons.h

@@ -20,6 +20,36 @@
 
 #include <stdint.h>
 
+#include "../../inc/MarlinConfig.h"
+#include "../scaled_tft.h"
+
+#define UPSCALE0(M) ((M) * (GRAPHICAL_TFT_UPSCALE))
+#define UPSCALE(A,M) (UPSCALE0(M) + (A))
+
+#define BUTTON_DRAW_WIDTH  32
+#define BUTTON_DRAW_HEIGHT 20
+
+#define BUTTON_WIDTH  UPSCALE0(BUTTON_DRAW_WIDTH)
+#define BUTTON_HEIGHT UPSCALE0(BUTTON_DRAW_HEIGHT)
+
+// calc the space between buttons
+#define BUTTON_SPACING (((TFT_WIDTH) - (BUTTON_WIDTH * 4)) / 5)
+
+#define BUTTOND_X_LO BUTTON_SPACING
+#define BUTTOND_X_HI BUTTOND_X_LO + BUTTON_WIDTH - 1
+
+#define BUTTONA_X_LO BUTTOND_X_HI + BUTTON_SPACING
+#define BUTTONA_X_HI BUTTONA_X_LO + BUTTON_WIDTH - 1
+
+#define BUTTONB_X_LO BUTTONA_X_HI + BUTTON_SPACING
+#define BUTTONB_X_HI BUTTONB_X_LO + BUTTON_WIDTH - 1
+
+#define BUTTONC_X_LO BUTTONB_X_HI + BUTTON_SPACING
+#define BUTTONC_X_HI BUTTONC_X_LO + BUTTON_WIDTH - 1
+
+#define BUTTON_Y_HI (TFT_HEIGHT) - (BUTTON_SPACING / 2)
+#define BUTTON_Y_LO BUTTON_Y_HI - BUTTON_HEIGHT
+
 class TouchButtons {
 public:
   static void init();