Added per-profile tuning step, made receiver follow tuning step, made mouse wheel tune frequency (button+wheel to zoom).

htdocs/openwebrx.js

@@ -31,6 +31,7 @@ var fft_compression = "none";
 var fft_codec;
 var waterfall_setup_done = 0;
 var secondary_fft_size;
+var tuning_step = 1;
 
 function updateVolume() {
     audioEngine.setVolume(parseFloat($("#openwebrx-panel-volume").val()) / 100);
@@ -268,7 +269,9 @@ function scale_canvas_mousedown(evt) {
 
 function scale_offset_freq_from_px(x, visible_range) {
     if (typeof visible_range === "undefined") visible_range = get_visible_freq_range();
-    return (visible_range.start + visible_range.bw * (x / waterfallWidth())) - center_freq;
+
+    var f = (visible_range.start + visible_range.bw * (x / waterfallWidth())) - center_freq;
+    return tuning_step>0? Math.round(f / tuning_step) * tuning_step : f;
 }
 
 function scale_canvas_mousemove(evt) {
@@ -513,11 +516,16 @@ function resize_scale() {
 
 function canvas_get_freq_offset(relativeX) {
     var rel = (relativeX / canvas_container.clientWidth);
-    return Math.round((bandwidth * rel) - (bandwidth / 2));
+    var off = (bandwidth * rel) - (bandwidth / 2);
+
+    return tuning_step>0?
+        Math.round(off / tuning_step) * tuning_step : Math.round(off);
 }
 
 function canvas_get_frequency(relativeX) {
-    return center_freq + canvas_get_freq_offset(relativeX);
+    var f = center_freq + canvas_get_freq_offset(relativeX);
+
+    return tuning_step>0? Math.round(f / tuning_step) * tuning_step : f;
 }
 
 
@@ -535,16 +543,23 @@ function format_frequency(format, freq_hz, pre_divide, decimals) {
 var canvas_drag = false;
 var canvas_drag_min_delta = 1;
 var canvas_mouse_down = false;
+var canvas_mouse2_down = 0;
 var canvas_drag_last_x;
 var canvas_drag_last_y;
 var canvas_drag_start_x;
 var canvas_drag_start_y;
 
 function canvas_mousedown(evt) {
+    if (evt.button > 0)
+        if (canvas_mouse2_down == 0)
+            canvas_mouse2_down = evt.button;
+    else {
         canvas_mouse_down = true;
         canvas_drag = false;
         canvas_drag_last_x = canvas_drag_start_x = evt.pageX;
         canvas_drag_last_y = canvas_drag_start_y = evt.pageY;
+    }
+
     evt.preventDefault(); //don't show text selection mouse pointer
 }
 
@@ -581,6 +596,10 @@ function canvas_container_mouseleave() {
 }
 
 function canvas_mouseup(evt) {
+    if (evt.button > 0) {
+        if (evt.button == canvas_mouse2_down)
+            canvas_mouse2_down = 0;
+    } else {
         if (!waterfall_setup_done) return;
         var relativeX = get_relative_x(evt);
 
@@ -592,6 +611,7 @@ function canvas_mouseup(evt) {
         }
         canvas_mouse_down = false;
     }
+}
 
 function canvas_end_drag() {
     canvas_container.style.cursor = "crosshair";
@@ -616,14 +636,18 @@ function get_relative_x(evt) {
 
 function canvas_mousewheel(evt) {
     if (!waterfall_setup_done) return;
-
-    var delta = -evt.deltaY;
-    // deltaMode 0 means pixels instead of lines
-    if ('deltaMode' in evt && evt.deltaMode === 0) {
-        delta /= 50;
-    }
     var relativeX = get_relative_x(evt);
-    zoom_step(delta, relativeX, zoom_center_where_calc(evt.pageX));
+    var dir = (evt.deltaY / Math.abs(evt.deltaY)) > 0;
+
+    // Zoom when mouse button down, tune otherwise
+    if (canvas_mouse2_down > 0) {
+        zoom_step(dir, relativeX, zoom_center_where_calc(evt.pageX));
+    } else {
+        var f = $('#openwebrx-panel-receiver').demodulatorPanel().getDemodulator().get_offset_frequency();
+        f += dir? -tuning_step : tuning_step;
+        $('#openwebrx-panel-receiver').demodulatorPanel().getDemodulator().set_offset_frequency(f);
+    }
+
     evt.preventDefault();
 }
 
@@ -783,6 +807,9 @@ function on_ws_recv(evt) {
                         if ('tuning_precision' in config)
                             $('#openwebrx-panel-receiver').demodulatorPanel().setTuningPrecision(config['tuning_precision']);
 
+                        if ('tuning_step' in config)
+                            tuning_step = config['tuning_step'];
+
                         break;
                     case "secondary_config":
                         var s = json['value'];

owrx/config/defaults.py

@@ -33,6 +33,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=2400000,
                         start_freq=439275000,
                         start_mod="nfm",
+                        tuning_step="1000",
                     ),
                     "2m": PropertyLayer(
                         name="2m",
@@ -41,6 +42,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=2048000,
                         start_freq=145725000,
                         start_mod="nfm",
+                        tuning_step="1000",
                     ),
                 }
             ),
@@ -57,6 +59,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=384000,
                         start_freq=14070000,
                         start_mod="usb",
+                        tuning_step="500",
                     ),
                     "30m": PropertyLayer(
                         name="30m",
@@ -64,6 +67,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=192000,
                         start_freq=10142000,
                         start_mod="usb",
+                        tuning_step="500",
                     ),
                     "40m": PropertyLayer(
                         name="40m",
@@ -71,6 +75,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=256000,
                         start_freq=7070000,
                         start_mod="lsb",
+                        tuning_step="500",
                     ),
                     "80m": PropertyLayer(
                         name="80m",
@@ -78,6 +83,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=384000,
                         start_freq=3570000,
                         start_mod="lsb",
+                        tuning_step="500",
                     ),
                     "49m": PropertyLayer(
                         name="49m Broadcast",
@@ -85,6 +91,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=384000,
                         start_freq=6070000,
                         start_mod="am",
+                        tuning_step="1000",
                     ),
                 }
             ),
@@ -102,6 +109,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=500000,
                         start_freq=14070000,
                         start_mod="usb",
+                        tuning_step="500",
                     ),
                     "30m": PropertyLayer(
                         name="30m",
@@ -110,6 +118,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=250000,
                         start_freq=10142000,
                         start_mod="usb",
+                        tuning_step="500",
                     ),
                     "40m": PropertyLayer(
                         name="40m",
@@ -118,6 +127,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=500000,
                         start_freq=7070000,
                         start_mod="lsb",
+                        tuning_step="500",
                     ),
                     "80m": PropertyLayer(
                         name="80m",
@@ -126,6 +136,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=500000,
                         start_freq=3570000,
                         start_mod="lsb",
+                        tuning_step="500",
                     ),
                     "49m": PropertyLayer(
                         name="49m Broadcast",
@@ -134,6 +145,7 @@ defaultConfig = PropertyLayer(
                         samp_rate=500000,
                         start_freq=6070000,
                         start_mod="am",
+                        tuning_step="1000",
                     ),
                 }
             ),

owrx/connection.py

@@ -120,6 +120,7 @@ class OpenWebRxReceiverClient(OpenWebRxClient, SdrSourceEventClient):
         "start_mod",
         "start_freq",
         "center_freq",
+        "tuning_step",
         "initial_squelch_level",
         "sdr_id",
         "profile_id",

owrx/source/__init__.py

@@ -12,8 +12,8 @@ from owrx.command import CommandMapper
 from owrx.socket import getAvailablePort
 from owrx.property import PropertyStack, PropertyLayer, PropertyFilter, PropertyCarousel, PropertyDeleted
 from owrx.property.filter import ByLambda
-from owrx.form.input import Input, TextInput, NumberInput, CheckboxInput, ModesInput, ExponentialInput
+from owrx.form.input import Input, TextInput, NumberInput, CheckboxInput, ModesInput, ExponentialInput, DropdownInput, Option
-from owrx.form.input.converter import OptionalConverter
+from owrx.form.input.converter import OptionalConverter, IntConverter
 from owrx.form.input.device import GainInput, SchedulerInput, WaterfallLevelsInput
 from owrx.form.input.validator import RequiredValidator
 from owrx.form.section import OptionalSection
@@ -565,6 +565,12 @@ class SdrDeviceDescription(object):
             ExponentialInput("samp_rate", "Sample rate", "S/s"),
             ExponentialInput("start_freq", "Initial frequency", "Hz"),
             ModesInput("start_mod", "Initial modulation"),
+            DropdownInput(
+                "tuning_step",
+                "Tuning step",
+                options=[Option(str(i), "{} Hz".format(i)) for i in [1, 100, 500, 1000, 2500, 3000, 5000, 6000, 10000, 12000, 50000]],
+                converter=IntConverter(),
+            ),
             NumberInput("initial_squelch_level", "Initial squelch level", append="dBFS"),
         ]
 
@@ -589,7 +595,7 @@ class SdrDeviceDescription(object):
         return keys
 
     def getProfileMandatoryKeys(self):
-        return ["name", "center_freq", "samp_rate", "start_freq", "start_mod"]
+        return ["name", "center_freq", "samp_rate", "start_freq", "start_mod", "tuning_step"]
 
     def getProfileOptionalKeys(self):
         return ["initial_squelch_level", "rf_gain", "lfo_offset", "waterfall_levels"]