From a3b511f468a23f6e20072c0643f0284bb7d02954 Mon Sep 17 00:00:00 2001
From: cho45 <cho45@lowreal.net>
Date: Wed, 11 Sep 2019 21:22:42 +0900
Subject: [PATCH] show time domain range

---
 plot.c | 77 +++++++++++++++++++++++++++++++++++-----------------------
 ui.c   |  1 +
 2 files changed, 47 insertions(+), 31 deletions(-)

diff --git a/plot.c b/plot.c
index e3f569f..83ed0fb 100644
--- a/plot.c
+++ b/plot.c
@@ -701,12 +701,17 @@ trace_get_info(int t, char *buf, int len)
   }
 }
 
+static float time_of_index(int idx) {
+   return 1.0 / (float)(frequencies[1] - frequencies[0]) / 128.0 * idx;
+}
+
 static float distance_of_index(int idx) {
 #define SPEED_OF_LIGHT 299792458
    float distance = ((float)idx * (float)SPEED_OF_LIGHT) / ( (float)(frequencies[1] - frequencies[0]) * 128.0 * 2.0);
    return distance * (velocity_factor / 100.0);
 }
 
+
 static inline void
 mark_map(int x, int y)
 {
@@ -1377,7 +1382,7 @@ cell_draw_marker_info(int m, int n, int w, int h)
       frequency_string(buf, sizeof buf, frequencies[idx]);
       cell_drawstring_5x7(w, h, buf, xpos, ypos, 0xffff);
   } else {
-      chsnprintf(buf, sizeof buf, "%.1f m (VF=%d%%)", distance_of_index(idx), velocity_factor);
+      chsnprintf(buf, sizeof buf, "%d ns %.1f m", (uint16_t)(time_of_index(idx) * 1e9), distance_of_index(idx));
       cell_drawstring_5x7(w, h, buf, xpos, ypos, 0xffff);
   }
 
@@ -1421,37 +1426,47 @@ void
 draw_frequencies(void)
 {
   char buf[24];
-  if (frequency1 > 0) {
-    int start = frequency0;
-    int stop = frequency1;
-    strcpy(buf, "START ");
-    frequency_string(buf+6, 24-6, start);
-    strcat(buf, "    ");
-    ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
-    strcpy(buf, "STOP ");
-    frequency_string(buf+5, 24-5, stop);
-    strcat(buf, "    ");
-    ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
-  } else if (frequency1 < 0) {
-    int fcenter = frequency0;
-    int fspan = -frequency1;
-    strcpy(buf, "CENTER ");
-    frequency_string(buf+7, 24-7, fcenter);
-    strcat(buf, "    ");
-    ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
-    strcpy(buf, "SPAN ");
-    frequency_string(buf+5, 24-5, fspan);
-    strcat(buf, "    ");
-    ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
+  if ((domain_mode & DOMAIN_MODE) == DOMAIN_FREQ) {
+      if (frequency1 > 0) {
+        int start = frequency0;
+        int stop = frequency1;
+        strcpy(buf, "START ");
+        frequency_string(buf+6, 24-6, start);
+        strcat(buf, "    ");
+        ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
+        strcpy(buf, "STOP ");
+        frequency_string(buf+5, 24-5, stop);
+        strcat(buf, "    ");
+        ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
+      } else if (frequency1 < 0) {
+        int fcenter = frequency0;
+        int fspan = -frequency1;
+        strcpy(buf, "CENTER ");
+        frequency_string(buf+7, 24-7, fcenter);
+        strcat(buf, "    ");
+        ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
+        strcpy(buf, "SPAN ");
+        frequency_string(buf+5, 24-5, fspan);
+        strcat(buf, "    ");
+        ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
+      } else {
+        int fcenter = frequency0;
+        chsnprintf(buf, 24, "CW %d.%03d %03d MHz    ",
+                   (int)(fcenter / 1000000),
+                   (int)((fcenter / 1000) % 1000),
+                   (int)(fcenter % 1000));
+        ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
+        chsnprintf(buf, 24, "                             ");
+        ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
+      }
   } else {
-    int fcenter = frequency0;
-    chsnprintf(buf, 24, "CW %d.%03d %03d MHz    ",
-               (int)(fcenter / 1000000),
-               (int)((fcenter / 1000) % 1000),
-               (int)(fcenter % 1000));
-    ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
-    chsnprintf(buf, 24, "                             ");
-    ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
+      strcpy(buf, "START 0s        ");
+      ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
+
+      strcpy(buf, "STOP ");
+      chsnprintf(buf+5, 24-5, "%d ns", (uint16_t)(time_of_index(101) * 1e9));
+      strcat(buf, "          ");
+      ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
   }
 }
 
diff --git a/ui.c b/ui.c
index 3541156..7023c6f 100644
--- a/ui.c
+++ b/ui.c
@@ -695,6 +695,7 @@ menu_transform_cb(int item)
       } else {
           domain_mode = (domain_mode & ~DOMAIN_MODE) | DOMAIN_TIME;
       }
+      draw_frequencies();
       ui_mode_normal();
       break;
     case 1: