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Author	SHA1	Message	Date
Mikkeli Matlock	a45bd4ba9b	Reference-line manager, relative time axis, axis-aware ref-line UX Reference lines: - Side-panel cluster (ref_line_widget.py): list of lines with Add/Edit/Remove/ Clear and a properties dialog (value, colour, line style, tag) - Lines own their state as RefLineProps (held by MainWindow), drawn with a triangle drag-handle; dragging writes the value back and refreshes the list - Replaces the old centre-only add-and-drag-the-whole-line approach Comparison: - Time-axis mode selector: Absolute (seconds) vs Relative (% of each track's own length), so a long track and a short one line up by song position. Pure view transform (plotspec.apply_x_mode), no recompute - Overlaid different-length tracks now autorange their x union in absolute mode instead of clipping to the first track's span Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-14 00:51:33 +09:00
Mikkeli Matlock	b400551321	Move plotting to pyqtgraph: interactive, overlay-capable render layer Replace the fire-and-forget matplotlib pipeline (render() -> throwaway Figure -> canvas teardown) with a three-stage architecture that supports zoom/pan, lin/log toggling, and multi-file overlay: compute(audio_file) -> data # heavy, worker thread, backend-neutral build_spec(data, view) -> PlotSpec # cheap, GUI thread, view-aware show_specs([(label, spec, color)]) # pyqtgraph, persistent PlotItem, overlay - plotspec.py: backend-agnostic descriptors (Curve, Band, HLine, Heatmap, AxisSpec, PlotSpec) + ViewState (recompute-free lin/log) - audio_visualization_widget.py: persistent pyqtgraph plot, never torn down; per-dataset colours for overlay; spectrogram log-freq via row resample (ImageItem is affine-only); ColorBarItem at a fixed cell - Compare/overlay driven by file-list checkboxes; stable per-song colour by row - Custom draggable reference lines (add/clear), persist across redraws - Axis-constrained scroll zoom: Ctrl=time, Shift=value (_AxisZoomViewBox) - RMS render no longer per-segment fill_between (was the slow path) Fixes found in review/testing: - FillBetweenItem needs penned child curves or it fills nothing (RMS/Waveform were blank); band fill verified by pixel count - band overlay alpha was a no-op (QBrush.color() returns a copy) - colorbar could stack across renders; now added/removed at a fixed layout cell Deferred (per scope): stereo retention, deep perf rewrites (eager beat_track, true-peak/crest loops, shared LUFS), per-song colour picker UI. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-14 00:35:10 +09:00

Author

SHA1

Message

Date

Mikkeli Matlock

a45bd4ba9b

Reference-line manager, relative time axis, axis-aware ref-line UX

Reference lines:
- Side-panel cluster (ref_line_widget.py): list of lines with Add/Edit/Remove/
  Clear and a properties dialog (value, colour, line style, tag)
- Lines own their state as RefLineProps (held by MainWindow), drawn with a
  triangle drag-handle; dragging writes the value back and refreshes the list
- Replaces the old centre-only add-and-drag-the-whole-line approach

Comparison:
- Time-axis mode selector: Absolute (seconds) vs Relative (% of each track's own
  length), so a long track and a short one line up by song position. Pure view
  transform (plotspec.apply_x_mode), no recompute
- Overlaid different-length tracks now autorange their x union in absolute mode
  instead of clipping to the first track's span

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-14 00:51:33 +09:00

Mikkeli Matlock

b400551321

Move plotting to pyqtgraph: interactive, overlay-capable render layer

Replace the fire-and-forget matplotlib pipeline (render() -> throwaway Figure ->
canvas teardown) with a three-stage architecture that supports zoom/pan, lin/log
toggling, and multi-file overlay:

  compute(audio_file) -> data        # heavy, worker thread, backend-neutral
  build_spec(data, view) -> PlotSpec # cheap, GUI thread, view-aware
  show_specs([(label, spec, color)]) # pyqtgraph, persistent PlotItem, overlay

- plotspec.py: backend-agnostic descriptors (Curve, Band, HLine, Heatmap,
  AxisSpec, PlotSpec) + ViewState (recompute-free lin/log)
- audio_visualization_widget.py: persistent pyqtgraph plot, never torn down;
  per-dataset colours for overlay; spectrogram log-freq via row resample
  (ImageItem is affine-only); ColorBarItem at a fixed cell
- Compare/overlay driven by file-list checkboxes; stable per-song colour by row
- Custom draggable reference lines (add/clear), persist across redraws
- Axis-constrained scroll zoom: Ctrl=time, Shift=value (_AxisZoomViewBox)
- RMS render no longer per-segment fill_between (was the slow path)

Fixes found in review/testing:
- FillBetweenItem needs penned child curves or it fills nothing (RMS/Waveform
  were blank); band fill verified by pixel count
- band overlay alpha was a no-op (QBrush.color() returns a copy)
- colorbar could stack across renders; now added/removed at a fixed layout cell

Deferred (per scope): stereo retention, deep perf rewrites (eager beat_track,
true-peak/crest loops, shared LUFS), per-song colour picker UI.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-14 00:35:10 +09:00

2 Commits