Using edgeEffect for overscroll in all-apps and widget tray (c5797893) · Commits · e / os / android_packages_apps_Trebuchet

src/com/android/launcher3/allapps/AllAppsContainerView.java

+3 −25

Original line number	Diff line number	Diff line
		@@ -77,7 +77,7 @@ import com.android.launcher3.workprofile.PersonalWorkSlidingTabStrip.OnActivePag
		public class AllAppsContainerView extends SpringRelativeLayout implements DragSource,
		Insettable, OnDeviceProfileChangeListener, OnActivePageChangedListener {

		private static final float FLING_VELOCITY_MULTIPLIER = 135f;
		private static final float FLING_VELOCITY_MULTIPLIER = 1000 * .8f;
		// Starts the springs after at least 55% of the animation has passed.
		private static final float FLING_ANIMATION_THRESHOLD = 0.55f;
		private static final int ALPHA_CHANNEL_COUNT = 2;
		@@ -140,12 +140,7 @@ public class AllAppsContainerView extends SpringRelativeLayout implements DragSo

		mAllAppsStore.addUpdateListener(this::onAppsUpdated);

		addSpringView(R.id.all_apps_header);
		addSpringView(R.id.apps_list_view);
		addSpringView(R.id.all_apps_tabs_view_pager);

		mMultiValueAlpha = new MultiValueAlpha(this, ALPHA_CHANNEL_COUNT);

		}

		/**
		@@ -169,14 +164,6 @@ public class AllAppsContainerView extends SpringRelativeLayout implements DragSo
		return mWorkModeSwitch;
		}


		@Override
		protected void setDampedScrollShift(float shift) {
		// Bound the shift amount to avoid content from drawing on top (Y-val) of the QSB.
		float maxShift = getSearchView().getHeight() / 2f;
		super.setDampedScrollShift(Utilities.boundToRange(shift, -maxShift, maxShift));
		}

		@Override
		public void onDeviceProfileChanged(DeviceProfile dp) {
		for (AdapterHolder holder : mAH) {
		@@ -407,12 +394,6 @@ public class AllAppsContainerView extends SpringRelativeLayout implements DragSo
		}
		}

		@Override
		public int getCanvasClipTopForOverscroll() {
		// Do not clip if the QSB is attached to the spring, otherwise the QSB will get clipped.
		return mSpringViews.get(getSearchView().getId()) ? 0 : mHeader.getTop();
		}

		private void rebindAdapters(boolean showTabs) {
		rebindAdapters(showTabs, false /* force */);
		}
		@@ -639,11 +620,8 @@ public class AllAppsContainerView extends SpringRelativeLayout implements DragSo
		public void onAnimationUpdate(ValueAnimator valueAnimator) {
		if (shouldSpring
		&& valueAnimator.getAnimatedFraction() >= FLING_ANIMATION_THRESHOLD) {
		int searchViewId = getSearchView().getId();
		addSpringView(searchViewId);
		finishWithShiftAndVelocity(1, velocity * FLING_VELOCITY_MULTIPLIER,
		(anim, canceled, value, velocity) -> removeSpringView(searchViewId));

		absorbSwipeUpVelocity(Math.abs(
		Math.round(velocity * FLING_VELOCITY_MULTIPLIER)));
		shouldSpring = false;
		}
		}

src/com/android/launcher3/views/SpringRelativeLayout.java

+75 −104

Original line number	Diff line number	Diff line
		@@ -15,51 +15,25 @@
		*/
		package com.android.launcher3.views;

		import static androidx.dynamicanimation.animation.SpringForce.DAMPING_RATIO_MEDIUM_BOUNCY;
		import static androidx.dynamicanimation.animation.SpringForce.STIFFNESS_LOW;
		import static androidx.dynamicanimation.animation.SpringForce.STIFFNESS_MEDIUM;

		import android.content.Context;
		import android.graphics.Canvas;
		import android.util.AttributeSet;
		import android.util.SparseBooleanArray;
		import android.view.View;
		import android.widget.EdgeEffect;
		import android.widget.RelativeLayout;

		import androidx.annotation.NonNull;
		import androidx.dynamicanimation.animation.DynamicAnimation;
		import androidx.dynamicanimation.animation.FloatPropertyCompat;
		import androidx.dynamicanimation.animation.SpringAnimation;
		import androidx.dynamicanimation.animation.SpringForce;
		import androidx.recyclerview.widget.RecyclerView;
		import androidx.recyclerview.widget.RecyclerView.EdgeEffectFactory;

		public class SpringRelativeLayout extends RelativeLayout {

		private static final float STIFFNESS = (STIFFNESS_MEDIUM + STIFFNESS_LOW) / 2;
		private static final float DAMPING_RATIO = DAMPING_RATIO_MEDIUM_BOUNCY;
		private static final float VELOCITY_MULTIPLIER = 0.3f;

		private static final FloatPropertyCompat<SpringRelativeLayout> DAMPED_SCROLL =
		new FloatPropertyCompat<SpringRelativeLayout>("value") {

		@Override
		public float getValue(SpringRelativeLayout object) {
		return object.mDampedScrollShift;
		}

		@Override
		public void setValue(SpringRelativeLayout object, float value) {
		object.setDampedScrollShift(value);
		}
		};
		import com.android.launcher3.Utilities;

		protected final SparseBooleanArray mSpringViews = new SparseBooleanArray();
		private final SpringAnimation mSpring;
		/**
		* View group to allow rendering overscroll effect in a child at the parent level
		*/
		public class SpringRelativeLayout extends RelativeLayout {

		private float mDampedScrollShift = 0;
		private SpringEdgeEffect mActiveEdge;
		private final EdgeEffect mEdgeGlowTop;
		private final EdgeEffect mEdgeGlowBottom;

		public SpringRelativeLayout(Context context) {
		this(context, null);
		@@ -71,98 +45,73 @@ public class SpringRelativeLayout extends RelativeLayout {

		public SpringRelativeLayout(Context context, AttributeSet attrs, int defStyleAttr) {
		super(context, attrs, defStyleAttr);
		mSpring = new SpringAnimation(this, DAMPED_SCROLL, 0);
		mSpring.setSpring(new SpringForce(0)
		.setStiffness(STIFFNESS)
		.setDampingRatio(DAMPING_RATIO));
		}

		public void addSpringView(int id) {
		mSpringViews.put(id, true);
		}

		public void removeSpringView(int id) {
		mSpringViews.delete(id);
		invalidate();
		}

		/**
		* Used to clip the canvas when drawing child views during overscroll.
		*/
		public int getCanvasClipTopForOverscroll() {
		return 0;
		mEdgeGlowTop = Utilities.ATLEAST_S
		? new EdgeEffect(context, attrs) : new EdgeEffect(context);
		mEdgeGlowBottom = Utilities.ATLEAST_S
		? new EdgeEffect(context, attrs) : new EdgeEffect(context);
		setWillNotDraw(false);
		}

		@Override
		protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
		if (mDampedScrollShift != 0 && mSpringViews.get(child.getId())) {
		int saveCount = canvas.save();

		canvas.clipRect(0, getCanvasClipTopForOverscroll(), getWidth(), getHeight());
		canvas.translate(0, mDampedScrollShift);
		boolean result = super.drawChild(canvas, child, drawingTime);

		canvas.restoreToCount(saveCount);

		return result;
		}
		return super.drawChild(canvas, child, drawingTime);
		public void draw(Canvas canvas) {
		super.draw(canvas);
		if (!mEdgeGlowTop.isFinished()) {
		final int restoreCount = canvas.save();
		canvas.translate(0, 0);
		mEdgeGlowTop.setSize(getWidth(), getHeight());
		if (mEdgeGlowTop.draw(canvas)) {
		postInvalidateOnAnimation();
		}

		private void setActiveEdge(SpringEdgeEffect edge) {
		if (mActiveEdge != edge && mActiveEdge != null) {
		mActiveEdge.mDistance = 0;
		canvas.restoreToCount(restoreCount);
		}
		mActiveEdge = edge;
		if (!mEdgeGlowBottom.isFinished()) {
		final int restoreCount = canvas.save();
		final int width = getWidth();
		final int height = getHeight();
		canvas.translate(-width, height);
		canvas.rotate(180, width, 0);
		mEdgeGlowBottom.setSize(width, height);
		if (mEdgeGlowBottom.draw(canvas)) {
		postInvalidateOnAnimation();
		}

		protected void setDampedScrollShift(float shift) {
		if (shift != mDampedScrollShift) {
		mDampedScrollShift = shift;
		invalidate();
		canvas.restoreToCount(restoreCount);
		}
		}

		private void finishScrollWithVelocity(float velocity) {
		mSpring.setStartVelocity(velocity);
		mSpring.setStartValue(mDampedScrollShift);
		mSpring.start();
		}

		protected void finishWithShiftAndVelocity(float shift, float velocity,
		DynamicAnimation.OnAnimationEndListener listener) {
		setDampedScrollShift(shift);
		mSpring.addEndListener(listener);
		finishScrollWithVelocity(velocity);
		/**
		* Absorbs the velocity as a result for swipe-up fling
		*/
		protected void absorbSwipeUpVelocity(int velocity) {
		mEdgeGlowBottom.onAbsorb(velocity);
		invalidate();
		}

		public EdgeEffectFactory createEdgeEffectFactory() {
		return new SpringEdgeEffectFactory();
		return new ProxyEdgeEffectFactory();
		}

		private class SpringEdgeEffectFactory extends EdgeEffectFactory {
		private class ProxyEdgeEffectFactory extends EdgeEffectFactory {

		@NonNull @Override
		protected EdgeEffect createEdgeEffect(RecyclerView view, int direction) {
		switch (direction) {
		case DIRECTION_TOP:
		return new SpringEdgeEffect(getContext(), +VELOCITY_MULTIPLIER);
		return new EdgeEffectProxy(getContext(), mEdgeGlowTop);
		case DIRECTION_BOTTOM:
		return new SpringEdgeEffect(getContext(), -VELOCITY_MULTIPLIER);
		return new EdgeEffectProxy(getContext(), mEdgeGlowBottom);
		}
		return super.createEdgeEffect(view, direction);
		}
		}

		private class SpringEdgeEffect extends EdgeEffect {
		private class EdgeEffectProxy extends EdgeEffect {

		private final float mVelocityMultiplier;
		private final EdgeEffect mParent;

		private float mDistance;

		public SpringEdgeEffect(Context context, float velocityMultiplier) {
		EdgeEffectProxy(Context context, EdgeEffect parent) {
		super(context);
		mVelocityMultiplier = velocityMultiplier;
		mParent = parent;
		}

		@Override
		@@ -170,22 +119,44 @@ public class SpringRelativeLayout extends RelativeLayout {
		return false;
		}

		private void invalidateParentScrollEffect() {
		if (!mParent.isFinished()) {
		invalidate();
		}
		}

		@Override
		public void onAbsorb(int velocity) {
		finishScrollWithVelocity(velocity * mVelocityMultiplier);
		mParent.onAbsorb(velocity);
		invalidateParentScrollEffect();
		}

		@Override
		public void onPull(float deltaDistance) {
		mParent.onPull(deltaDistance);
		invalidateParentScrollEffect();
		}

		@Override
		public void onPull(float deltaDistance, float displacement) {
		setActiveEdge(this);
		mDistance += deltaDistance * (mVelocityMultiplier / 3f);
		setDampedScrollShift(mDistance * getHeight());
		mParent.onPull(deltaDistance, displacement);
		invalidateParentScrollEffect();
		}

		@Override
		public void onRelease() {
		mDistance = 0;
		finishScrollWithVelocity(0);
		mParent.onRelease();
		invalidateParentScrollEffect();
		}

		@Override
		public void finish() {
		mParent.finish();
		}

		@Override
		public boolean isFinished() {
		return mParent.isFinished();
		}
		}
		}
		No newline at end of file

src/com/android/launcher3/widget/picker/WidgetsFullSheet.java

+0 −5

Original line number	Diff line number	Diff line
		@@ -144,17 +144,12 @@ public class WidgetsFullSheet extends BaseWidgetSheet
		findViewById(R.id.tab_work)
		.setOnClickListener((View view) -> mViewPager.snapToPage(1));
		fastScroller.setIsRecyclerViewFirstChildInParent(false);
		springLayout.addSpringView(R.id.primary_widgets_list_view);
		springLayout.addSpringView(R.id.work_widgets_list_view);
		} else {
		mViewPager = null;
		springLayout.addSpringView(R.id.primary_widgets_list_view);
		}

		layoutInflater.inflate(R.layout.widgets_full_sheet_search_and_recommendations, springLayout,
		true);
		springLayout.addSpringView(R.id.search_and_recommendations_container);

		mSearchAndRecommendationViewHolder = new SearchAndRecommendationViewHolder(
		findViewById(R.id.search_and_recommendations_container));
		mSearchAndRecommendationsScrollController = new SearchAndRecommendationsScrollController(