From 0e8aece991bed8896d89a0834661d91ee86208b4 Mon Sep 17 00:00:00 2001
From: Jakob Ketterl <jakob.ketterl@gmx.de>
Date: Sun, 13 Sep 2020 13:57:12 +0200
Subject: [PATCH] display current waterfall values on mouse over

---
 htdocs/openwebrx.js | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/htdocs/openwebrx.js b/htdocs/openwebrx.js
index 06883bc..3805ef1 100644
--- a/htdocs/openwebrx.js
+++ b/htdocs/openwebrx.js
@@ -87,31 +87,37 @@ function updateWaterfallColors(which) {
     waterfall_min_level = parseInt($wfmin.val());
     if (waterfall_min_level >= waterfall_max_level) {
         if (!which) {
-            $wfmin.val(waterfall_max_level - 1);
             waterfall_min_level = waterfall_max_level -1;
         } else {
-            $wfmax.val(waterfall_min_level + 1);
             waterfall_max_level = waterfall_min_level + 1;
         }
     }
+    updateWaterfallSliders();
+}
+
+function updateWaterfallSliders() {
+    $('#openwebrx-waterfall-color-max')
+        .val(waterfall_max_level)
+        .attr('title', 'Waterfall maximum level (' + Math.round(waterfall_max_level) + ' dB)');
+    $('#openwebrx-waterfall-color-min')
+        .val(waterfall_min_level)
+        .attr('title', 'Waterfall minimum level (' + Math.round(waterfall_min_level) + ' dB)');
 }
 
 function waterfallColorsDefault() {
     waterfall_min_level = waterfall_min_level_default;
     waterfall_max_level = waterfall_max_level_default;
-    $("#openwebrx-waterfall-color-min").val(waterfall_min_level);
-    $("#openwebrx-waterfall-color-max").val(waterfall_max_level);
+    updateWaterfallSliders();
     waterfallColorsContinuousReset();
 }
 
 function waterfallColorsAuto(levels) {
     var min_level = levels.min - waterfall_auto_level_margin.min;
-    $("#openwebrx-waterfall-color-min").val(min_level);
     var max_level = levels.max + waterfall_auto_level_margin.max;
     max_level = Math.max(min_level + (waterfall_auto_level_margin.min_range || 0), max_level);
-    $("#openwebrx-waterfall-color-max").val(max_level);
     waterfall_min_level = min_level;
     waterfall_max_level = max_level;
+    updateWaterfallSliders();
 }
 
 var waterfall_continuous = {