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Add waterfall modulation auto-select and fix kill-all message

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Waterfall clicks now auto-select the correct modulation for the frequency
band (e.g., WFM for FM broadcast, AM for airband) instead of using whatever
modulation was last selected. Adds a hover tooltip showing frequency and
suggested modulation. Fixes the kill-all notification to show a clean
"All processes stopped" message instead of listing "bluetooth_scanner".

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Smittix
2026-02-08 00:41:18 +00:00
parent 766a51753d
commit 7aae2944d4
3 changed files with 55 additions and 3 deletions
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54
static/js/modes/listening-post.js
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@@ -69,6 +69,24 @@ const scannerPresets = {
amateur70cm: { start: 420, end: 450, step: 25, mod: 'fm' }
};
/**
* Suggest the appropriate modulation for a given frequency (in MHz).
* Uses standard band allocations to pick AM, NFM, WFM, or USB.
*/
function suggestModulation(freqMhz) {
if (freqMhz < 0.52) return 'am'; // LW/MW AM broadcast
if (freqMhz < 1.7) return 'am'; // MW AM broadcast
if (freqMhz < 30) return 'usb'; // HF/Shortwave
if (freqMhz < 88) return 'fm'; // VHF Low (public safety)
if (freqMhz < 108) return 'wfm'; // FM Broadcast
if (freqMhz < 137) return 'am'; // Airband
if (freqMhz < 174) return 'fm'; // VHF marine, 2m ham, pagers
if (freqMhz < 216) return 'wfm'; // VHF TV/DAB
if (freqMhz < 470) return 'fm'; // UHF various, 70cm, business/GMRS
if (freqMhz < 960) return 'wfm'; // UHF TV
return 'am'; // Microwave/ADS-B
}
const audioPresets = {
fm: { freq: 98.1, mod: 'wfm' },
airband: { freq: 121.5, mod: 'am' }, // Emergency/guard frequency
@@ -3671,17 +3689,51 @@ function bindWaterfallInteraction() {
const ratio = Math.max(0, Math.min(1, x / rect.width));
const freq = waterfallStartFreq + ratio * (waterfallEndFreq - waterfallStartFreq);
if (typeof tuneToFrequency === 'function') {
tuneToFrequency(freq, typeof currentModulation !== 'undefined' ? currentModulation : undefined);
tuneToFrequency(freq, suggestModulation(freq));
}
};
// Tooltip for showing frequency + modulation on hover
let tooltip = document.getElementById('waterfallTooltip');
if (!tooltip) {
tooltip = document.createElement('div');
tooltip.id = 'waterfallTooltip';
tooltip.style.cssText = 'position:fixed;pointer-events:none;background:rgba(0,0,0,0.85);color:#0f0;padding:4px 8px;border-radius:4px;font-size:12px;font-family:monospace;z-index:9999;display:none;white-space:nowrap;border:1px solid #333;';
document.body.appendChild(tooltip);
}
const hoverHandler = (event) => {
if (waterfallMode === 'audio') {
tooltip.style.display = 'none';
return;
}
const canvas = event.currentTarget;
const rect = canvas.getBoundingClientRect();
const x = event.clientX - rect.left;
const ratio = Math.max(0, Math.min(1, x / rect.width));
const freq = waterfallStartFreq + ratio * (waterfallEndFreq - waterfallStartFreq);
const mod = suggestModulation(freq);
tooltip.textContent = `${freq.toFixed(3)} MHz \u00b7 ${mod.toUpperCase()}`;
tooltip.style.left = (event.clientX + 12) + 'px';
tooltip.style.top = (event.clientY - 28) + 'px';
tooltip.style.display = 'block';
};
const leaveHandler = () => {
tooltip.style.display = 'none';
};
if (waterfallCanvas) {
waterfallCanvas.style.cursor = 'crosshair';
waterfallCanvas.addEventListener('click', handler);
waterfallCanvas.addEventListener('mousemove', hoverHandler);
waterfallCanvas.addEventListener('mouseleave', leaveHandler);
}
if (spectrumCanvas) {
spectrumCanvas.style.cursor = 'crosshair';
spectrumCanvas.addEventListener('click', handler);
spectrumCanvas.addEventListener('mousemove', hoverHandler);
spectrumCanvas.addEventListener('mouseleave', leaveHandler);
}
}