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[leancode_debug_page] Vendor shake package, bump sensors_plus depende…
…ncy (#325)
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80 changes: 80 additions & 0 deletions
80
packages/leancode_debug_page/lib/src/core/shake_detector.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| // This file mostly consists of code copied from https://pub.dev/packages/shake | ||
| // The package must have been vendored in order to bump dependency on | ||
| // sensors_plus and avoid exceptions caused by the old version of that package. | ||
| // Shake dependency can be brought back once https://github.com/deven98/shake/pull/32 | ||
| // is merged | ||
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| import 'dart:async'; | ||
| import 'dart:math'; | ||
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| import 'package:flutter/foundation.dart'; | ||
| import 'package:sensors_plus/sensors_plus.dart'; | ||
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| class ShakeDetector { | ||
| /// This constructor automatically calls [startListening] and starts detection and callbacks. | ||
| ShakeDetector.autoStart({ | ||
| required this.onPhoneShake, | ||
| this.shakeThresholdGravity = 2.7, | ||
| this.shakeSlopTimeMS = 500, | ||
| this.shakeCountResetTime = 3000, | ||
| this.minimumShakeCount = 1, | ||
| }) { | ||
| startListening(); | ||
| } | ||
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| final VoidCallback onPhoneShake; | ||
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| /// Shake detection threshold | ||
| final double shakeThresholdGravity; | ||
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| /// Minimum time between shake | ||
| final int shakeSlopTimeMS; | ||
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| /// Time before shake count resets | ||
| final int shakeCountResetTime; | ||
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| /// Number of shakes required before shake is triggered | ||
| final int minimumShakeCount; | ||
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| int mShakeTimestamp = DateTime.now().millisecondsSinceEpoch; | ||
| int mShakeCount = 0; | ||
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| StreamSubscription<AccelerometerEvent>? streamSubscription; | ||
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| void startListening() { | ||
| streamSubscription = accelerometerEventStream().listen( | ||
| (event) { | ||
| final gX = event.x / 9.80665; | ||
| final gY = event.y / 9.80665; | ||
| final gZ = event.z / 9.80665; | ||
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| // gForce will be close to 1 when there is no movement. | ||
| final gForce = sqrt(gX * gX + gY * gY + gZ * gZ); | ||
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| if (gForce > shakeThresholdGravity) { | ||
| final now = DateTime.now().millisecondsSinceEpoch; | ||
| // ignore shake events too close to each other (500ms) | ||
| if (mShakeTimestamp + shakeSlopTimeMS > now) { | ||
| return; | ||
| } | ||
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| // reset the shake count after [shakeCountResetTime] seconds of no shakes | ||
| if (mShakeTimestamp + shakeCountResetTime < now) { | ||
| mShakeCount = 0; | ||
| } | ||
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| mShakeTimestamp = now; | ||
| mShakeCount++; | ||
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| if (mShakeCount >= minimumShakeCount) { | ||
| onPhoneShake(); | ||
| } | ||
| } | ||
| }, | ||
| ); | ||
| } | ||
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| void stopListening() { | ||
| streamSubscription?.cancel(); | ||
| } | ||
| } |
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