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a45bd4ba9bb0ca7b0f1ce4d4494285e746b2c0d6
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4 Commits

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
Mikkeli Matlock cf901a5686 cleanup 2026-05-28 14:05:34 +09:00
Mikkeli Matlock b07b363454 Implement modular GUI architecture with embedded matplotlib 
Major refactor from popup-based to persistent PyQt5 interface:
- Extract plotting logic from AudioFile class into separate PlottingEngine
- Create AudioVisualizationWidget with embedded matplotlib canvas
- Add AnalysisResultsManager as bridge between processing and GUI
- Replace simple drag-drop widget with professional splitter layout
- Preserve legacy batch processing mode with execution guard

Features:
- Drag-and-drop audio analysis (.mp3/.wav/.flac support)
- File list with metadata display (BPM, amplitudes, track info)
- Persistent visualization area (no more matplotlib popups)
- Multi-file support with click-to-view functionality
- Threading-ready architecture for future background processing

Technical improvements:
- Clean separation of concerns (analysis/visualization/GUI)
- Qt signal-slot communication pattern
- Modular component design ready for multithreading
- Proper import guards prevent legacy code interference

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-08-21 22:43:11 +09:00