Added animations to dim layers (2fb06bc3) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/wm/Dimmer.java

+170 −29

Original line number	Diff line number	Diff line
		@@ -17,34 +17,115 @@
		package com.android.server.wm;

		import android.util.ArrayMap;
		import android.util.Slog;
		import android.view.SurfaceControl;
		import android.graphics.Rect;

		import com.android.internal.annotations.VisibleForTesting;

		/**
		* Utility class for use by a WindowContainer implementation to add "DimLayer" support, that is
		* black layers of varying opacity at various Z-levels which create the effect of a Dim.
		*/
		class Dimmer {
		private static final String TAG = "WindowManager";
		private static final int DEFAULT_DIM_ANIM_DURATION = 200;

		private class DimAnimatable implements SurfaceAnimator.Animatable {
		private final SurfaceControl mDimLayer;

		private DimAnimatable(SurfaceControl dimLayer) {
		mDimLayer = dimLayer;
		}

		@Override
		public SurfaceControl.Transaction getPendingTransaction() {
		return mHost.getPendingTransaction();
		}

		@Override
		public void commitPendingTransaction() {
		mHost.commitPendingTransaction();
		}

		@Override
		public void onAnimationLeashCreated(SurfaceControl.Transaction t, SurfaceControl leash) {
		}

		@Override
		public void onAnimationLeashDestroyed(SurfaceControl.Transaction t) {
		}

		@Override
		public void destroyAfterPendingTransaction(SurfaceControl surface) {
		mHost.destroyAfterPendingTransaction(surface);
		}

		@Override
		public SurfaceControl.Builder makeAnimationLeash() {
		return mHost.makeAnimationLeash();
		}

		@Override
		public SurfaceControl getAnimationLeashParent() {
		return mHost.getSurfaceControl();
		}

		@Override
		public SurfaceControl getSurfaceControl() {
		return mDimLayer;
		}

		@Override
		public SurfaceControl getParentSurfaceControl() {
		return mHost.getSurfaceControl();
		}

		@Override
		public int getSurfaceWidth() {
		// This will determine the size of the leash created. This should be the size of the
		// host and not the dim layer since the dim layer may get bigger during animation. If
		// that occurs, the leash size cannot change so we need to ensure the leash is big
		// enough that the dim layer can grow.
		// This works because the mHost will be a Task which has the display bounds.
		return mHost.getSurfaceWidth();
		}

		@Override
		public int getSurfaceHeight() {
		// See getSurfaceWidth() above for explanation.
		return mHost.getSurfaceHeight();
		}
		}

		private class DimState {
		SurfaceControl mSurfaceControl;
		@VisibleForTesting
		class DimState {
		/**
		* The layer where property changes should be invoked on.
		*/
		SurfaceControl mDimLayer;
		boolean mDimming;
		boolean isVisible;
		SurfaceAnimator mSurfaceAnimator;

		/**
		* Used for Dims not assosciated with a WindowContainer. See {@link Dimmer#dimAbove} for
		* Used for Dims not associated with a WindowContainer. See {@link Dimmer#dimAbove} for
		* details on Dim lifecycle.
		*/
		boolean mDontReset;

		DimState(SurfaceControl ctl) {
		mSurfaceControl = ctl;
		DimState(SurfaceControl dimLayer) {
		mDimLayer = dimLayer;
		mDimming = true;
		mSurfaceAnimator = new SurfaceAnimator(new DimAnimatable(dimLayer), () -> {
		if (!mDimming) {
		mDimLayer.destroy();
		}
		}, mHost.mService.mAnimator::addAfterPrepareSurfacesRunnable, mHost.mService);
		}
		}
		};

		private ArrayMap<WindowContainer, DimState> mDimLayerUsers = new ArrayMap<>();
		@VisibleForTesting
		ArrayMap<WindowContainer, DimState> mDimLayerUsers = new ArrayMap<>();

		/**
		* The {@link WindowContainer} that our Dim's are bounded to. We may be dimming on behalf of the
		@@ -56,19 +137,18 @@ class Dimmer {
		mHost = host;
		}

		SurfaceControl makeDimLayer() {
		final SurfaceControl control = mHost.makeChildSurface(null)
		private SurfaceControl makeDimLayer() {
		return mHost.makeChildSurface(null)
		.setParent(mHost.getSurfaceControl())
		.setColorLayer(true)
		.setName("Dim Layer for - " + mHost.getName())
		.build();
		return control;
		}

		/**
		* Retreive the DimState for a given child of the host.
		*/
		DimState getDimState(WindowContainer container) {
		private DimState getDimState(WindowContainer container) {
		DimState state = mDimLayerUsers.get(container);
		if (state == null) {
		final SurfaceControl ctl = makeDimLayer();
		@@ -88,14 +168,12 @@ class Dimmer {
		private void dim(SurfaceControl.Transaction t, WindowContainer container, int relativeLayer,
		float alpha) {
		final DimState d = getDimState(container);
		t.show(d.mSurfaceControl);
		if (container != null) {
		t.setRelativeLayer(d.mSurfaceControl,
		container.getSurfaceControl(), relativeLayer);
		t.setRelativeLayer(d.mDimLayer, container.getSurfaceControl(), relativeLayer);
		} else {
		t.setLayer(d.mSurfaceControl, Integer.MAX_VALUE);
		t.setLayer(d.mDimLayer, Integer.MAX_VALUE);
		}
		t.setAlpha(d.mSurfaceControl, alpha);
		t.setAlpha(d.mDimLayer, alpha);

		d.mDimming = true;
		}
		@@ -107,9 +185,11 @@ class Dimmer {
		*/
		void stopDim(SurfaceControl.Transaction t) {
		DimState d = getDimState(null);
		t.hide(d.mSurfaceControl);
		t.hide(d.mDimLayer);
		d.isVisible = false;
		d.mDontReset = false;
		}

		/**
		* Place a Dim above the entire host container. The caller is responsible for calling stopDim to
		* remove this effect. If the Dim can be assosciated with a particular child of the host
		@@ -159,7 +239,7 @@ class Dimmer {
		void resetDimStates() {
		for (int i = mDimLayerUsers.size() - 1; i >= 0; i--) {
		final DimState state = mDimLayerUsers.valueAt(i);
		if (state.mDontReset == false) {
		if (!state.mDontReset) {
		state.mDimming = false;
		}
		}
		@@ -177,19 +257,80 @@ class Dimmer {
		boolean didSomething = false;
		for (int i = mDimLayerUsers.size() - 1; i >= 0; i--) {
		DimState state = mDimLayerUsers.valueAt(i);
		WindowContainer container = mDimLayerUsers.keyAt(i);

		// TODO: We want to animate the addition and removal of Dim's instead of immediately
		// acting. When we do this we need to take care to account for the "Replacing Windows"
		// case (and seamless dim transfer).
		if (state.mDimming == false) {
		if (!state.mDimming) {
		mDimLayerUsers.removeAt(i);
		state.mSurfaceControl.destroy();
		startDimExit(container, state.mSurfaceAnimator, t);
		} else {
		didSomething = true;
		// TODO: Once we use geometry from hierarchy this falls away.
		t.setSize(state.mSurfaceControl, bounds.width(), bounds.height());
		t.setPosition(state.mSurfaceControl, bounds.left, bounds.top);
		t.setSize(state.mDimLayer, bounds.width(), bounds.height());
		t.setPosition(state.mDimLayer, bounds.left, bounds.top);
		if (!state.isVisible) {
		state.isVisible = true;
		t.show(state.mDimLayer);
		startDimEnter(container, state.mSurfaceAnimator, t);
		}
		}
		}
		return didSomething;
		}

		private void startDimEnter(WindowContainer container, SurfaceAnimator animator,
		SurfaceControl.Transaction t) {
		startAnim(container, animator, t, 0 /* startAlpha /, 1 / endAlpha */);
		}

		private void startDimExit(WindowContainer container, SurfaceAnimator animator,
		SurfaceControl.Transaction t) {
		startAnim(container, animator, t, 1 /* startAlpha /, 0 / endAlpha */);
		}

		private void startAnim(WindowContainer container, SurfaceAnimator animator,
		SurfaceControl.Transaction t, float startAlpha, float endAlpha) {
		animator.startAnimation(t, new LocalAnimationAdapter(
		new AlphaAnimationSpec(startAlpha, endAlpha, getDimDuration(container)),
		mHost.mService.mSurfaceAnimationRunner), false /* hidden */);
		}

		private long getDimDuration(WindowContainer container) {
		// If there's no container, then there isn't an animation occurring while dimming. Set the
		// duration to 0 so it immediately dims to the set alpha.
		if (container == null) {
		return 0;
		}

		// Otherwise use the same duration as the animation on the WindowContainer
		AnimationAdapter animationAdapter = container.mSurfaceAnimator.getAnimation();
		return animationAdapter == null ? DEFAULT_DIM_ANIM_DURATION
		: animationAdapter.getDurationHint();
		}

		private static class AlphaAnimationSpec implements LocalAnimationAdapter.AnimationSpec {
		private final long mDuration;
		private final float mFromAlpha;
		private final float mToAlpha;

		AlphaAnimationSpec(float fromAlpha, float toAlpha, long duration) {
		mFromAlpha = fromAlpha;
		mToAlpha = toAlpha;
		mDuration = duration;
		}

		@Override
		public long getDuration() {
		return mDuration;
		}

		@Override
		public void apply(SurfaceControl.Transaction t, SurfaceControl sc, long currentPlayTime) {
		float alpha = ((float) currentPlayTime / getDuration()) * (mToAlpha - mFromAlpha)
		+ mFromAlpha;
		t.setAlpha(sc, alpha);
		}
		}
		}

services/core/java/com/android/server/wm/DisplayContent.java

+18 −0

Original line number	Diff line number	Diff line
		@@ -3599,6 +3599,8 @@ class DisplayContent extends WindowContainer<DisplayContent.DisplayChildWindowCo
		}

		private final class AboveAppWindowContainers extends NonAppWindowContainers {
		private final Dimmer mDimmer = new Dimmer(this);
		private final Rect mTmpDimBoundsRect = new Rect();
		AboveAppWindowContainers(String name, WindowManagerService service) {
		super(name, service);
		}
		@@ -3630,6 +3632,22 @@ class DisplayContent extends WindowContainer<DisplayContent.DisplayChildWindowCo
		imeContainer.assignRelativeLayer(t, getSurfaceControl(), Integer.MAX_VALUE);
		}
		}

		@Override
		Dimmer getDimmer() {
		return mDimmer;
		}

		@Override
		void prepareSurfaces() {
		mDimmer.resetDimStates();
		super.prepareSurfaces();
		getBounds(mTmpDimBoundsRect);

		if (mDimmer.updateDims(getPendingTransaction(), mTmpDimBoundsRect)) {
		scheduleAnimation();
		}
		}
		}

		/**

services/core/java/com/android/server/wm/Task.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -462,8 +462,8 @@ class Task extends WindowContainer<AppWindowToken> {
		} else {
		mStack.getBounds(mTmpRect);
		mTmpRect.intersect(getBounds());
		}
		out.set(mTmpRect);
		}
		} else {
		out.set(getBounds());
		}
		@@ -640,6 +640,7 @@ class Task extends WindowContainer<AppWindowToken> {
		mPreserveNonFloatingState = false;
		}

		@Override
		Dimmer getDimmer() {
		return mDimmer;
		}

services/core/java/com/android/server/wm/TaskStack.java

+1 −0

Original line number	Diff line number	Diff line
		@@ -1722,6 +1722,7 @@ public class TaskStack extends WindowContainer<Task> implements
		\|\| activityType == ACTIVITY_TYPE_ASSISTANT;
		}

		@Override
		Dimmer getDimmer() {
		return mDimmer;
		}

services/core/java/com/android/server/wm/WindowContainer.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -1219,4 +1219,11 @@ class WindowContainer<E extends WindowContainer> extends ConfigurationContainer<
		outPos.offset(-parentBounds.left, -parentBounds.top);
		}
		}

		Dimmer getDimmer() {
		if (mParent == null) {
		return null;
		}
		return mParent.getDimmer();
		}
		}