Merge "Add haptic feedback to auth ripple animation" into sc-dev (8c8765d3) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/biometrics/AuthRippleView.kt

+35 −0

Original line number	Diff line number	Diff line
		@@ -23,7 +23,11 @@ import android.content.Context
		import android.graphics.Canvas
		import android.graphics.Paint
		import android.graphics.PointF
		import android.media.AudioAttributes
		import android.os.VibrationEffect
		import android.os.Vibrator
		import android.util.AttributeSet
		import android.util.MathUtils
		import android.view.View
		import android.view.animation.PathInterpolator
		import com.android.internal.graphics.ColorUtils
		@@ -31,15 +35,26 @@ import com.android.systemui.statusbar.charging.RippleShader

		private const val RIPPLE_ANIMATION_DURATION: Long = 1533
		private const val RIPPLE_SPARKLE_STRENGTH: Float = 0.4f
		private const val RIPPLE_VIBRATION_PRIMITIVE: Int = VibrationEffect.Composition.PRIMITIVE_LOW_TICK
		private const val RIPPLE_VIBRATION_SIZE: Int = 60
		private const val RIPPLE_VIBRATION_SCALE_START: Float = 0.6f
		private const val RIPPLE_VIBRATION_SCALE_DECAY: Float = -0.1f

		/**
		* Expanding ripple effect on the transition from biometric authentication success to showing
		* launcher.
		*/
		class AuthRippleView(context: Context?, attrs: AttributeSet?) : View(context, attrs) {
		private val vibrator: Vibrator? = context?.getSystemService(Vibrator::class.java)
		private var rippleInProgress: Boolean = false
		private val rippleShader = RippleShader()
		private val ripplePaint = Paint()
		private val rippleVibrationEffect = createVibrationEffect(vibrator)
		private val rippleVibrationAttrs =
		AudioAttributes.Builder()
		.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
		.setUsage(AudioAttributes.USAGE_ASSISTANCE_SONIFICATION)
		.build()

		init {
		rippleShader.color = 0xffffffff.toInt() // default color
		@@ -95,6 +110,7 @@ class AuthRippleView(context: Context?, attrs: AttributeSet?) : View(context, at
		visibility = GONE
		}
		})
		vibrate()
		animatorSet.start()
		visibility = VISIBLE
		rippleInProgress = true
		@@ -108,4 +124,23 @@ class AuthRippleView(context: Context?, attrs: AttributeSet?) : View(context, at
		// draw over the entire screen
		canvas?.drawRect(0f, 0f, width.toFloat(), height.toFloat(), ripplePaint)
		}

		private fun vibrate() {
		if (rippleVibrationEffect != null) {
		vibrator?.vibrate(rippleVibrationEffect, rippleVibrationAttrs)
		}
		}

		private fun createVibrationEffect(vibrator: Vibrator?): VibrationEffect? {
		if (vibrator?.areAllPrimitivesSupported(RIPPLE_VIBRATION_PRIMITIVE) == false) {
		return null
		}
		val composition = VibrationEffect.startComposition()
		for (i in 0 until RIPPLE_VIBRATION_SIZE) {
		val scale =
		RIPPLE_VIBRATION_SCALE_START * MathUtils.exp(RIPPLE_VIBRATION_SCALE_DECAY * i)
		composition.addPrimitive(RIPPLE_VIBRATION_PRIMITIVE, scale, 0 /* delay */)
		}
		return composition.compose()
		}
		}