change keypads on scale, scale handling

main.c

@@ -1042,6 +1042,15 @@ void set_trace_channel(int t, int channel)
 
 void set_trace_scale(int t, float scale)
 {
+  switch (trace[t].type) {
+  case TRC_LOGMAG:
+    scale /= 10;
+    break;
+  case TRC_PHASE:
+    scale /= 90;
+    break;
+  }
+
   if (trace[t].scale != scale) {
     trace[t].scale = scale;
     force_set_markmap();

plot.c

@@ -481,7 +481,7 @@ trace_into_index(int x, int t, int i, float coeff[2])
   int y = 0;
   float v = 0;
   float refpos = 8 - trace[t].refpos;
-  float scale = trace[t].scale;
+  float scale = 1 / trace[t].scale;
   switch (trace[t].type) {
   case TRC_LOGMAG:
     v = refpos - logmag(coeff) * scale;
@@ -498,7 +498,7 @@ trace_into_index(int x, int t, int i, float coeff[2])
   case TRC_SMITH:
   //case TRC_ADMIT:
   case TRC_POLAR:
-    cartesian_scale(coeff[0], coeff[1], &x, &y, trace[t].scale);
+    cartesian_scale(coeff[0], coeff[1], &x, &y, scale);
     return INDEX(x +CELLOFFSETX, y, i);
     break;
   }

ui.c

@@ -842,10 +842,15 @@ void menu_invoke(int item)
 #define KP_INF 17
 #define KP_DB 18
 
-const struct {
+typedef struct {
   uint16_t x, y;
   int8_t c;
-} keypads[] = {
+} keypads_t;
+
+const keypads_t *keypads;
+uint8_t keypads_last_index;
+
+const keypads_t keypads_freq[] = {
   { KP_X(1), KP_Y(3), KP_PERIOD },
   { KP_X(0), KP_Y(3), 0 },
   { KP_X(0), KP_Y(2), 1 },
@@ -864,7 +869,39 @@ const struct {
   { KP_X(2), KP_Y(3), KP_BS },
   { 0, 0, -1 }
 };
-#define KEYPADS_LAST_INDEX 15
+
+const keypads_t keypads_scale[] = {
+  { KP_X(1), KP_Y(3), KP_PERIOD },
+  { KP_X(0), KP_Y(3), 0 },
+  { KP_X(0), KP_Y(2), 1 },
+  { KP_X(1), KP_Y(2), 2 },
+  { KP_X(2), KP_Y(2), 3 },
+  { KP_X(0), KP_Y(1), 4 },
+  { KP_X(1), KP_Y(1), 5 },
+  { KP_X(2), KP_Y(1), 6 },
+  { KP_X(0), KP_Y(0), 7 },
+  { KP_X(1), KP_Y(0), 8 },
+  { KP_X(2), KP_Y(0), 9 },
+  { KP_X(3), KP_Y(3), KP_X1 },
+  { KP_X(2), KP_Y(3), KP_BS },
+  { 0, 0, -1 }
+};
+
+const keypads_t *keypads_mode_tbl[] = {
+  keypads_freq, // start
+  keypads_freq, // stop
+  keypads_freq, // center
+  keypads_freq, // span
+  keypads_freq, // cw freq
+  keypads_scale, // scale
+  keypads_scale, // respos
+  keypads_scale // electrical delay
+};
+
+const char *keypad_mode_label[] = {
+  "START", "STOP", "CENTER", "SPAN", "CW FREQ", "SCALE", "REFPOS", "EDELAY"
+};
+
 
 void
 draw_keypad(void)
@@ -880,10 +917,6 @@ draw_keypad(void)
   }
 }
 
-const char *keypad_mode_label[] = {
-  "START", "STOP", "CENTER", "SPAN", "CW FREQ", "SCALE", "REFPOS", "EDELAY"
-};
-
 void
 draw_numeric_input(const char *buf)
 {
@@ -1032,12 +1065,19 @@ ui_mode_keypad(int _keypad_mode)
   if (ui_mode == UI_KEYPAD) 
     return;
 
+  // keypads array
+  keypad_mode = _keypad_mode;
+  keypads = keypads_mode_tbl[_keypad_mode];
+  int i;
+  for (i = 0; keypads[i+1].c >= 0; i++)
+    ;
+  keypads_last_index = i;
+
   ui_mode = UI_KEYPAD;
   area_width = AREA_WIDTH_NORMAL - (64-8);
   area_height = HEIGHT;
   draw_menu();
   draw_keypad();
-  keypad_mode = _keypad_mode;
   draw_numeric_input("");
 }
 
@@ -1207,7 +1247,7 @@ ui_process_keypad(void)
         if (s & EVT_UP) {
           selection--;
           if (selection < 0)
-            selection = KEYPADS_LAST_INDEX;
+            selection = keypads_last_index;
           draw_keypad();
         }
         if (s & EVT_DOWN) {