invent a new icon for continuous auto waterfall mode

htdocs/css/openwebrx.css

@@ -1314,3 +1314,15 @@ img.openwebrx-mirror-img
 .bookmark .bookmark-actions .openwebrx-button svg {
     height: 14px;
 }
+
+#openwebrx-waterfall-colors-auto .continuous {
+    display: none;
+}
+
+#openwebrx-waterfall-colors-auto.highlighted .continuous {
+    display: initial;
+}
+
+#openwebrx-waterfall-colors-auto.highlighted .auto {
+    display: none;
+}

htdocs/gfx/svg-defs.svg

@@ -23,5 +23,6 @@
         <g id="maps-pin" transform="translate(-965.78 -331.788) scale(1.1856)"><path d="M817.11 282.97c-1.258 1.343-2.046 3.299-2.016 5.139.064 3.845 1.797 5.3 4.569 10.592.998 2.328 2.04 4.792 3.031 8.873.138.602.272 1.16.334 1.21.062.048.197-.513.334-1.115.991-4.081 2.033-6.543 3.032-8.872 2.77-5.291 4.504-6.747 4.568-10.592.03-1.84-.76-3.797-2.018-5.14-1.437-1.534-3.605-2.67-5.916-2.717-2.311-.047-4.48 1.088-5.918 2.622z" fill="#ff4646" stroke="#d73534"/><circle cx="823.03" cy="288.25" r="3.035" fill="#590000"/></g>
         <g id="play-button"><circle cx="350" cy="350" r="330" fill="none" stroke="#fff" stroke-width="36"/><path d="M195 211v278l366-139z" fill="#fff"/></g>
         <g id="meta-mute" stroke="#fff" stroke-width="5"><path stroke-linejoin="round" style="paint-order:fill" fill="none" d="m21.989 47.699 17.4 15.051V13.769L22.235 28.606H6v19.093z" transform="matrix(5.3513 0 0 5.3723 -.73 -1.542)"/><path d="m48.652 50.27 20.743-24.299M69.395 50.27 48.652 25.971" stroke-linecap="round" transform="matrix(5.3513 0 0 5.3723 -.73 -1.542)"/></g>
+        <g id="waterfall-continuous"><g stroke="#fff" stroke-width="8"><path d="M5 40A35 35 0 0 1 26.606 7.664a35 35 0 0 1 38.143 7.587" fill="none"/><path d="m68.284 11.716 2.828 9.9-9.899-2.829z" fill="#fff"/></g><path d="m48.008 48.144 2.816 8.624h9.035L45.075 14h-9.739L20.141 56.768h8.976l2.875-8.624zm-2.405-7.333H34.456l5.573-16.72z" fill="#fff" aria-label="A"/><g stroke="#fff" stroke-width="8"><path d="M75 40a35 35 0 0 1-21.606 32.336 35 35 0 0 1-38.143-7.587" fill="none"/><path d="m11.716 68.284-2.828-9.9 9.899 2.829z" fill="#fff"/></g></g>
     </defs>
 </svg>

htdocs/index.html

@@ -157,7 +157,8 @@
                     </div>
                     <input title="Volume" id="openwebrx-panel-volume" class="openwebrx-panel-slider" type="range" min="0" max="150" value="50" step="1" onchange="updateVolume()" oninput="updateVolume()">
                     <div title="Auto-adjust waterfall colors (right-click for continuous)" id="openwebrx-waterfall-colors-auto" class="openwebrx-button openwebrx-slider-button">
-                        <svg viewBox="0 0 80 80"><use xlink:href="static/gfx/svg-defs.svg#waterfall-auto"></use></svg>
+                        <svg class="auto" viewBox="0 0 80 80"><use xlink:href="static/gfx/svg-defs.svg#waterfall-auto"></use></svg>
+                        <svg class="continuous" viewBox="0 0 80 80"><use xlink:href="static/gfx/svg-defs.svg#waterfall-continuous"></use></svg>
                     </div>
                     <input title="Waterfall minimum level" id="openwebrx-waterfall-color-min" class="openwebrx-panel-slider" type="range" min="-200" max="100" value="50" step="1" onchange="updateWaterfallColors(0);" oninput="updateVolume()">
                 </div>

inkscape files/openwebrx-waterfall-continuous.svg

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="80"
+   height="80"
+   viewBox="0 0 80 80"
+   version="1.1"
+   id="svg8"
+   inkscape:version="1.0.2 (e86c870879, 2021-01-15, custom)"
+   sodipodi:docname="openwebrx-waterfall-continuous.svg">
+  <defs
+     id="defs2" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#000000"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="8.7676686"
+     inkscape:cx="58.124903"
+     inkscape:cy="50.77501"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer1"
+     inkscape:document-rotation="0"
+     showgrid="true"
+     units="px"
+     inkscape:pagecheckerboard="true"
+     inkscape:snap-object-midpoints="true"
+     inkscape:window-width="2560"
+     inkscape:window-height="1381"
+     inkscape:window-x="0"
+     inkscape:window-y="348"
+     inkscape:window-maximized="1"
+     inkscape:snap-grids="true">
+    <inkscape:grid
+       type="xygrid"
+       id="grid971"
+       spacingx="5"
+       spacingy="5"
+       empspacing="2" />
+  </sodipodi:namedview>
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <g
+       id="g857"
+       style="stroke-width:8;stroke-miterlimit:4;stroke-dasharray:none">
+      <path
+         style="fill:none;stroke:#ffffff;stroke-width:8;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+         id="path833"
+         sodipodi:type="arc"
+         sodipodi:cx="40"
+         sodipodi:cy="40"
+         sodipodi:rx="35"
+         sodipodi:ry="35"
+         sodipodi:start="3.1415927"
+         sodipodi:end="5.4977871"
+         sodipodi:arc-type="arc"
+         d="M 5,40 A 35,35 0 0 1 26.606079,7.6642167 35,35 0 0 1 64.748736,15.251262"
+         sodipodi:open="true" />
+      <path
+         style="fill:#ffffff;fill-opacity:1;stroke:#ffffff;stroke-width:8;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+         d="m 66.870239,13.130239 2.12132,6.363961 -6.363961,-2.12132 z"
+         id="path853"
+         sodipodi:nodetypes="cccc" />
+    </g>
+    <g
+       id="g857-5"
+       style="stroke-width:8;stroke-miterlimit:4;stroke-dasharray:none"
+       transform="rotate(180,40,40)">
+      <path
+         style="fill:none;stroke:#ffffff;stroke-width:8;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+         id="path833-3"
+         sodipodi:type="arc"
+         sodipodi:cx="40"
+         sodipodi:cy="40"
+         sodipodi:rx="35"
+         sodipodi:ry="35"
+         sodipodi:start="3.1415927"
+         sodipodi:end="5.4977871"
+         sodipodi:arc-type="arc"
+         sodipodi:open="true"
+         d="M 5,40 A 35,35 0 0 1 26.60608,7.6642163 35,35 0 0 1 64.748736,15.251262" />
+      <path
+         style="fill:#ffffff;fill-opacity:1;stroke:#ffffff;stroke-width:8;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+         d="m 66.870239,13.130239 2.12132,6.363961 -6.363961,-2.12132 z"
+         id="path853-5"
+         sodipodi:nodetypes="cccc" />
+    </g>
+    <g
+       aria-label="A"
+       id="text1703"
+       style="font-style:normal;font-weight:normal;font-size:58.6667px;line-height:1.25;font-family:sans-serif;fill:#ffffff;fill-opacity:1;stroke:none">
+      <path
+         d="m 48.008181,48.14402 2.816002,8.624004 h 9.034671 L 45.074846,14.000001 H 35.336174 L 20.141499,56.768024 h 8.976005 L 31.992172,48.14402 Z M 45.602846,40.810682 H 34.456174 L 40.02951,24.090673 Z"
+         style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:58.6667px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';fill:#ffffff;fill-opacity:1"
+         id="path1705" />
+    </g>
+  </g>
+</svg>