Adds the LightRevealScrim, and the 'lift' reveal effect. (f3276055) · Commits · e / os / android_frameworks_base

packages/SystemUI/res/layout/super_notification_shade.xml

+6 −0

Original line number	Diff line number	Diff line
		@@ -43,6 +43,12 @@
		android:visibility="invisible" />
		</com.android.systemui.statusbar.BackDropView>

		<com.android.systemui.statusbar.LightRevealScrim
		android:id="@+id/light_reveal_scrim"
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		android:visibility="gone" />

		<com.android.systemui.statusbar.ScrimView
		android:id="@+id/scrim_behind"
		android:layout_width="match_parent"

packages/SystemUI/src/com/android/systemui/statusbar/LightRevealScrim.kt

0 → 100644

+207 −0

Original line number	Diff line number	Diff line
		package com.android.systemui.statusbar

		import android.content.Context
		import android.graphics.Canvas
		import android.graphics.Color
		import android.graphics.Matrix
		import android.graphics.Paint
		import android.graphics.PointF
		import android.graphics.PorterDuff
		import android.graphics.PorterDuffColorFilter
		import android.graphics.PorterDuffXfermode
		import android.graphics.RadialGradient
		import android.graphics.Shader
		import android.os.SystemProperties
		import android.util.AttributeSet
		import android.view.View
		import com.android.systemui.Interpolators

		val enableLightReveal =
		SystemProperties.getBoolean("persist.sysui.show_new_screen_on_transitions", false)

		/**
		* Provides methods to modify the various properties of a [LightRevealScrim] to reveal between 0% to
		* 100% of the view(s) underneath the scrim.
		*/
		interface LightRevealEffect {
		fun setRevealAmountOnScrim(amount: Float, scrim: LightRevealScrim)

		companion object {

		/**
		* Returns the percent that the given value is past the threshold value. For example, 0.9 is
		* 50% of the way past 0.8.
		*/
		fun getPercentPastThreshold(value: Float, threshold: Float): Float {
		return (value - threshold).coerceAtLeast(0f) * (1f / (1f - threshold))
		}
		}
		}

		/**
		* Light reveal effect that shows light entering the phone from the bottom of the screen. The light
		* enters from the bottom-middle as a narrow oval, and moves upward, eventually widening to fill the
		* screen.
		*/
		object LiftReveal : LightRevealEffect {

		/** Widen the oval of light after 35%, so it will eventually fill the screen. */
		private const val WIDEN_OVAL_THRESHOLD = 0.35f

		/** After 85%, fade out the black color at the end of the gradient. */
		private const val FADE_END_COLOR_OUT_THRESHOLD = 0.85f

		/** The initial width of the light oval, in percent of scrim width. */
		private const val OVAL_INITIAL_WIDTH_PERCENT = 0.5f

		/** The initial top value of the light oval, in percent of scrim height. */
		private const val OVAL_INITIAL_TOP_PERCENT = 1.05f

		/** The initial bottom value of the light oval, in percent of scrim height. */
		private const val OVAL_INITIAL_BOTTOM_PERCENT = 1.2f

		/** Interpolator to use for the reveal amount. */
		private val INTERPOLATOR = Interpolators.FAST_OUT_SLOW_IN_REVERSE

		override fun setRevealAmountOnScrim(amount: Float, scrim: LightRevealScrim) {
		val interpolatedAmount = INTERPOLATOR.getInterpolation(amount)
		val ovalWidthIncreaseAmount =
		LightRevealEffect.getPercentPastThreshold(interpolatedAmount, WIDEN_OVAL_THRESHOLD)

		val initialWidthMultiplier = (1f - OVAL_INITIAL_WIDTH_PERCENT) / 2f

		with(scrim) {
		revealGradientEndColorAlpha = 1f - LightRevealEffect.getPercentPastThreshold(
		amount, FADE_END_COLOR_OUT_THRESHOLD)
		setRevealGradientBounds(
		scrim.width * initialWidthMultiplier +
		-scrim.width * ovalWidthIncreaseAmount,
		scrim.height * OVAL_INITIAL_TOP_PERCENT -
		scrim.height * interpolatedAmount,
		scrim.width * (1f - initialWidthMultiplier) +
		scrim.width * ovalWidthIncreaseAmount,
		scrim.height * OVAL_INITIAL_BOTTOM_PERCENT +
		scrim.height * interpolatedAmount)
		}
		}
		}

		/**
		* Scrim view that partially reveals the content underneath it using a [RadialGradient] with a
		* transparent center. The center position, size, and stops of the gradient can be manipulated to
		* reveal views below the scrim as if they are being 'lit up'.
		*/
		class LightRevealScrim(context: Context?, attrs: AttributeSet?) : View(context, attrs) {

		/**
		* How much of the underlying views are revealed, in percent. 0 means they will be completely
		* obscured and 1 means they'll be fully visible.
		*/
		var revealAmount: Float = 0f
		set(value) {
		if (field != value) {
		field = value

		revealEffect.setRevealAmountOnScrim(value, this)
		invalidate()
		}
		}

		/**
		* The [LightRevealEffect] used to manipulate the radial gradient whenever [revealAmount]
		* changes.
		*/
		var revealEffect: LightRevealEffect = LiftReveal
		set(value) {
		if (field != value) {
		field = value

		revealEffect.setRevealAmountOnScrim(revealAmount, this)
		invalidate()
		}
		}

		var revealGradientCenter = PointF()
		var revealGradientWidth: Float = 0f
		var revealGradientHeight: Float = 0f

		var revealGradientEndColor: Int = Color.BLACK
		set(value) {
		if (field != value) {
		field = value
		setPaintColorFilter()
		}
		}

		var revealGradientEndColorAlpha = 0f
		set(value) {
		if (field != value) {
		field = value
		setPaintColorFilter()
		}
		}

		/**
		* Paint used to draw a transparent-to-white radial gradient. This will be scaled and translated
		* via local matrix in [onDraw] so we never need to construct a new shader.
		*/
		private val gradientPaint = Paint().apply {
		shader = RadialGradient(
		0f, 0f, 1f,
		intArrayOf(Color.TRANSPARENT, Color.WHITE), floatArrayOf(0f, 1f),
		Shader.TileMode.CLAMP)

		// SRC_OVER ensures that we draw the semitransparent pixels over other views in the same
		// window, rather than outright replacing them.
		xfermode = PorterDuffXfermode(PorterDuff.Mode.SRC_OVER)
		}

		/**
		* Matrix applied to [gradientPaint]'s RadialGradient shader to move the gradient to
		* [revealGradientCenter] and set its size to [revealGradientWidth]/[revealGradientHeight],
		* without needing to construct a new shader each time those properties change.
		*/
		private val shaderGradientMatrix = Matrix()

		/**
		* Sets bounds for the transparent oval gradient that reveals the views below the scrim. This is
		* simply a helper method that sets [revealGradientCenter], [revealGradientWidth], and
		* [revealGradientHeight] for you.
		*
		* This method does not call [invalidate] - you should do so once you're done changing
		* properties.
		*/
		public fun setRevealGradientBounds(left: Float, top: Float, right: Float, bottom: Float) {
		revealGradientWidth = right - left
		revealGradientHeight = bottom - top

		revealGradientCenter.x = left + (revealGradientWidth / 2f)
		revealGradientCenter.y = top + (revealGradientHeight / 2f)
		}

		override fun onDraw(canvas: Canvas?) {
		if (canvas == null \|\| revealGradientWidth <= 0 \|\| revealGradientHeight <= 0) {
		return
		}

		with(shaderGradientMatrix) {
		setScale(revealGradientWidth, revealGradientHeight, 0f, 0f)
		postTranslate(revealGradientCenter.x, revealGradientCenter.y)

		gradientPaint.shader.setLocalMatrix(this)
		}

		// Draw the gradient over the screen, then multiply the end color by it.
		canvas.drawRect(0f, 0f, width.toFloat(), height.toFloat(), gradientPaint)
		}

		private fun setPaintColorFilter() {
		gradientPaint.colorFilter = PorterDuffColorFilter(
		Color.argb(
		(revealGradientEndColorAlpha * 255).toInt(),
		Color.red(revealGradientEndColor),
		Color.green(revealGradientEndColor),
		Color.blue(revealGradientEndColor)),
		PorterDuff.Mode.MULTIPLY)
		}
		}
		No newline at end of file

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java

+18 −0

Original line number	Diff line number	Diff line
		@@ -35,6 +35,7 @@ import static com.android.systemui.keyguard.WakefulnessLifecycle.WAKEFULNESS_ASL
		import static com.android.systemui.keyguard.WakefulnessLifecycle.WAKEFULNESS_AWAKE;
		import static com.android.systemui.keyguard.WakefulnessLifecycle.WAKEFULNESS_WAKING;
		import static com.android.systemui.shared.system.WindowManagerWrapper.NAV_BAR_POS_INVALID;
		import static com.android.systemui.statusbar.LightRevealScrimKt.getEnableLightReveal;
		import static com.android.systemui.statusbar.NotificationLockscreenUserManager.PERMISSION_SELF;
		import static com.android.systemui.statusbar.phone.BarTransitions.MODE_LIGHTS_OUT;
		import static com.android.systemui.statusbar.phone.BarTransitions.MODE_LIGHTS_OUT_TRANSPARENT;
		@@ -181,6 +182,8 @@ import com.android.systemui.statusbar.CrossFadeHelper;
		import com.android.systemui.statusbar.GestureRecorder;
		import com.android.systemui.statusbar.KeyboardShortcuts;
		import com.android.systemui.statusbar.KeyguardIndicationController;
		import com.android.systemui.statusbar.LiftReveal;
		import com.android.systemui.statusbar.LightRevealScrim;
		import com.android.systemui.statusbar.NotificationLockscreenUserManager;
		import com.android.systemui.statusbar.NotificationMediaManager;
		import com.android.systemui.statusbar.NotificationPresenter;
		@@ -367,6 +370,7 @@ public class StatusBar extends SystemUI implements DemoMode,
		DozeServiceHost mDozeServiceHost;
		private boolean mWakeUpComingFromTouch;
		private PointF mWakeUpTouchLocation;
		private LightRevealScrim mLightRevealScrim;

		private final Object mQueueLock = new Object();

		@@ -1155,6 +1159,13 @@ public class StatusBar extends SystemUI implements DemoMode,
		});
		mScrimController.attachViews(scrimBehind, scrimInFront, scrimForBubble);

		mLightRevealScrim = mNotificationShadeWindowView.findViewById(R.id.light_reveal_scrim);

		if (getEnableLightReveal()) {
		mLightRevealScrim.setVisibility(View.VISIBLE);
		mLightRevealScrim.setRevealEffect(LiftReveal.INSTANCE);
		}

		mNotificationPanelViewController.initDependencies(
		this,
		mNotificationShelfController);
		@@ -3618,6 +3629,13 @@ public class StatusBar extends SystemUI implements DemoMode,
		Trace.endSection();
		}

		@Override
		public void onDozeAmountChanged(float linear, float eased) {
		if (getEnableLightReveal()) {
		mLightRevealScrim.setRevealAmount(1f - linear);
		}
		}

		@Override
		public void onDozingChanged(boolean isDozing) {
		Trace.beginSection("StatusBar#updateDozing");