Akiba So
85af037b7d
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Surface Aug6 diag showed sDrop=0 but ~220 same-ms dual ZOOM frames and √2 cur ping-pong from reading currentZoom back into pinch state. Flush once per microtask and embed gitSha in diagnostic meta. Co-authored-by: Cursor <cursoragent@cursor.com>
108 lines
4.1 KiB
Dart
108 lines
4.1 KiB
Dart
// lib/editor/canvas/input_diagnostics.dart
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//
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// Live zoom/pan diagnostics for the pen canvas. PenInteractiveViewer records one
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// entry per scale-update frame; the editor's diagnostic overlay displays the
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// accumulated summary + a rolling trace so a SINGLE device session reveals the
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// nature of any "跳变" (is it a raw-scale spike, a focal/position jump, or a
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// pointer-count oscillation?). All numbers reset via [reset].
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import 'package:flutter/foundation.dart';
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import '../../diagnostics/frame_sampler.dart';
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import '../input/diagnostic_logger.dart';
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class InputDiagnostics extends ChangeNotifier {
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InputDiagnostics._();
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static final InputDiagnostics instance = InputDiagnostics._();
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int frames = 0;
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int scaleDropped = 0; // frames HARD-rejected (legacy; prefer soft-clamp)
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int softClamped = 0; // frames whose step was soft-clamped (still applied)
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int focalDropped = 0; // frames rejected as a focal/position glitch
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int rebaselines = 0; // pointer-count re-baselines
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int pointerCountMax = 0;
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double rawScaleMin = double.infinity, rawScaleMax = 0;
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double scaleMin = double.infinity, scaleMax = 0;
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double maxFocalJumpPx = 0; // largest single-frame local focal delta
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double maxAppliedScaleJump = 1; // largest single-frame applied scale ratio
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final List<String> _trace = <String>[];
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List<String> get trace => List.unmodifiable(_trace);
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void recordRebaseline() {
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rebaselines++;
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DiagnosticLogger.instance.log('ZOOM rebaseline');
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notifyListeners();
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}
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void recordScaleFrame({
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required double rawScale,
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required int pointerCount,
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required double currentScale,
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required double appliedChange, // 1.0 when the frame was dropped
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required double focalJumpPx,
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required bool scaleDrop,
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required bool focalDrop,
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bool softClamped = false,
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double? liveScale,
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}) {
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frames++;
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if (scaleDrop) scaleDropped++;
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if (softClamped) this.softClamped++;
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if (focalDrop) focalDropped++;
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if (rawScale < rawScaleMin) rawScaleMin = rawScale;
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if (rawScale > rawScaleMax) rawScaleMax = rawScale;
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final double resulting = currentScale;
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if (resulting < scaleMin) scaleMin = resulting;
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if (resulting > scaleMax) scaleMax = resulting;
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if (pointerCount > pointerCountMax) pointerCountMax = pointerCount;
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if (focalJumpPx > maxFocalJumpPx) maxFocalJumpPx = focalJumpPx;
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final double jump = appliedChange >= 1 ? appliedChange : 1 / appliedChange;
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if (jump > maxAppliedScaleJump) maxAppliedScaleJump = jump;
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final liveBit = liveScale == null
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? ''
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: ' live=${liveScale.toStringAsFixed(3)}';
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final String line = 'p$pointerCount raw=${rawScale.toStringAsFixed(3)} '
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'ch=${appliedChange.toStringAsFixed(3)} '
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'cur=${currentScale.toStringAsFixed(3)}$liveBit '
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'fj=${focalJumpPx.toStringAsFixed(0)}'
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'${softClamped ? " SCLAMP" : ""}'
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'${scaleDrop ? " SDROP" : ""}'
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'${focalDrop ? " FDROP" : ""}';
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_trace.add(line);
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if (_trace.length > 24) _trace.removeAt(0);
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FrameSampler.instance.recordZoom(
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rawScale: rawScale,
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scaleDrop: scaleDrop || softClamped,
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focalDrop: focalDrop,
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focalJumpPx: focalJumpPx,
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);
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DiagnosticLogger.instance.log('ZOOM $line');
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notifyListeners();
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}
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void reset() {
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frames = scaleDropped = softClamped = focalDropped = rebaselines =
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pointerCountMax = 0;
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rawScaleMin = scaleMin = double.infinity;
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rawScaleMax = scaleMax = 0;
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maxFocalJumpPx = 0;
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maxAppliedScaleJump = 1;
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_trace.clear();
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notifyListeners();
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}
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String summary() {
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final rawLo = rawScaleMin.isFinite ? rawScaleMin.toStringAsFixed(2) : '-';
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final rawHi = rawScaleMax > 0 ? rawScaleMax.toStringAsFixed(2) : '-';
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final scLo = scaleMin.isFinite ? scaleMin.toStringAsFixed(2) : '-';
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final scHi = scaleMax > 0 ? scaleMax.toStringAsFixed(2) : '-';
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return 'zoom f=$frames sDrop=$scaleDropped sClamp=$softClamped '
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'fDrop=$focalDropped rebase=$rebaselines pMax=$pointerCountMax\n'
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' raw=$rawLo..$rawHi scale=$scLo..$scHi\n'
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' maxFocalJump=${maxFocalJumpPx.toStringAsFixed(0)}px '
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'maxScaleJump=${maxAppliedScaleJump.toStringAsFixed(2)}';
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}
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}
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