fix: remove alert(), fix waveform zoom, add waveform scroll (wheel + ctrl+wheel)

2026-03-19 22:08:26 +01:00
parent d5de328898
commit 7c58174f5f
3 changed files with 22 additions and 5 deletions
--- a/js/waveform.js
+++ b/js/waveform.js
@@ -121,11 +121,14 @@ export function drawWaveforms() {
        return;
    }

-    // Auto-scroll to show latest
+    // Auto-scroll to show latest (only if we're already near the end)
    const maxVisible = Math.floor(wc.width / state.waveZoom);
-    if (state.timeStep > maxVisible) {
+    const isNearEnd = state.waveScroll >= state.timeStep - maxVisible - 2;
+    if (state.timeStep > maxVisible && isNearEnd) {
        state.waveScroll = state.timeStep - maxVisible;
    }
+    // Clamp scroll to valid range
+    state.waveScroll = Math.max(0, Math.min(state.timeStep - 1, state.waveScroll));

    // Draw time grid
    wctx.strokeStyle = '#151520';