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[feat](trx-frontend-http): tune SDR spectrum with ctrl-scroll

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Signed-off-by: Stan Grams <sjg@haxx.space>
Co-authored-by: OpenAI Codex <codex@openai.com>
This commit is contained in:
Stan Grams
2026-02-27 23:05:20 +01:00
parent bc206e8f6b
commit 071157e5bf
2 changed files with 7 additions and 9 deletions
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src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js
+5 -7
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@@ -2719,19 +2719,17 @@ if (spectrumCanvas) {
spectrumCanvas.addEventListener("wheel", (e) => { spectrumCanvas.addEventListener("wheel", (e) => {
e.preventDefault(); e.preventDefault();
if (!lastSpectrumData) return; if (!lastSpectrumData) return;
if (e.ctrlKey) {
const direction = e.deltaY < 0 ? 1 : -1;
jogFreq(direction);
return;
}
const rect = spectrumCanvas.getBoundingClientRect(); const rect = spectrumCanvas.getBoundingClientRect();
const cssX = e.clientX - rect.left; const cssX = e.clientX - rect.left;
const factor = e.deltaY < 0 ? 1.25 : 1 / 1.25; const factor = e.deltaY < 0 ? 1.25 : 1 / 1.25;
spectrumZoomAt(cssX, rect.width, lastSpectrumData, factor); spectrumZoomAt(cssX, rect.width, lastSpectrumData, factor);
drawSpectrum(lastSpectrumData); drawSpectrum(lastSpectrumData);
}, { passive: false }); }, { passive: false });
// Double-click → reset zoom/pan
spectrumCanvas.addEventListener("dblclick", () => {
spectrumZoom = 1;
spectrumPanFrac = 0.5;
if (lastSpectrumData) drawSpectrum(lastSpectrumData);
});
} }
// ── BW strip edge hit-test (CSS pixels) ────────────────────────────────────── // ── BW strip edge hit-test (CSS pixels) ──────────────────────────────────────
src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
+2 -2
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@@ -71,7 +71,7 @@
<button id="spectrum-auto-btn" type="button">Auto</button> <button id="spectrum-auto-btn" type="button">Auto</button>
</div> </div>
</div> </div>
<div id="spectrum-hint">Scroll to zoom &middot; Drag to pan &middot; Double-click to reset &middot; Drag BW edges to resize</div> <div id="spectrum-hint">Scroll to zoom &middot; Ctrl+Scroll to tune &middot; Drag to pan &middot; Drag BW edges to resize</div>
</div> </div>
<div class="status"> <div class="status">
<div class="full-row freq-row"> <div class="full-row freq-row">
@@ -84,7 +84,7 @@
<input class="status-input" id="freq" type="text" value="--" /> <input class="status-input" id="freq" type="text" value="--" />
<div class="label"><span>Frequency</span></div> <div class="label"><span>Frequency</span></div>
</div> </div>
<div class="freq-field frequency-col" id="center-freq-field" style="display:none;"> <div class="freq-field frequency-col center-frequency-col" id="center-freq-field" style="display:none;">
<input class="status-input" id="center-freq" type="text" value="--" /> <input class="status-input" id="center-freq" type="text" value="--" />
<div class="label"><span>Central Frequency</span></div> <div class="label"><span>Central Frequency</span></div>
</div> </div>