Merge "Improved the behavior of overscroll" into sc-dev (2b10a162) · Commits · e / os / android_frameworks_base

libs/WindowManager/Shell/src/com/android/wm/shell/animation/FlingAnimationUtils.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -311,6 +311,13 @@ public class FlingAnimationUtils {
		return mMinVelocityPxPerSecond;
		}

		/**
		* @return a velocity considered fast
		*/
		public float getHighVelocityPxPerSecond() {
		return mHighVelocityPxPerSecond;
		}

		/**
		* An interpolator which interpolates two interpolators with an interpolator.
		*/

packages/SystemUI/animation/src/com/android/systemui/animation/Interpolators.java

+10 −0

Original line number	Diff line number	Diff line
		@@ -93,6 +93,16 @@ public class Interpolators {
		(float) (1.0f - Math.exp(-b * progress)) * (overshootAmount + 1.0f));
		}

		/**
		* Similar to {@link #getOvershootInterpolation(float, float, float)} but the overshoot
		* starts immediately here, instead of first having a section of non-overshooting
		*
		* @param progress a progress value going from 0 to 1
		*/
		public static float getOvershootInterpolation(float progress) {
		return MathUtils.max(0.0f, (float) (1.0f - Math.exp(-4 * progress)));
		}

		/**
		* Interpolate alpha for notifications background scrim during shade expansion.
		* @param fraction Shade expansion fraction

packages/SystemUI/res/values/dimens.xml

+3 −0

Original line number	Diff line number	Diff line
		@@ -771,6 +771,9 @@
		<!-- Move distance for the unlock hint animation on the lockscreen -->
		<dimen name="hint_move_distance">75dp</dimen>

		<!-- The overshoot amount when the panel flings open -->
		<dimen name="panel_overshoot_amount">16dp</dimen>

		<!-- The width of the region on the left/right edge of the screen for performing the camera/
		phone hints. -->
		<dimen name="edge_tap_area_width">48dp</dimen>

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/AmbientState.java

+5 −5

Original line number	Diff line number	Diff line
		@@ -83,7 +83,7 @@ public class AmbientState {
		private ExpandableNotificationRow mTrackedHeadsUpRow;
		private float mAppearFraction;
		private boolean mIsShadeOpening;
		private float mSectionPadding;
		private float mOverExpansion;

		/** Distance of top of notifications panel from top of screen. */
		private float mStackY = 0;
		@@ -182,12 +182,12 @@ public class AmbientState {
		return mIsShadeOpening;
		}

		void setSectionPadding(float padding) {
		mSectionPadding = padding;
		void setOverExpansion(float overExpansion) {
		mOverExpansion = overExpansion;
		}

		float getSectionPadding() {
		return mSectionPadding;
		float getOverExpansion() {
		return mOverExpansion;
		}

		private static int getZDistanceBetweenElements(Context context) {

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java

+23 −7

Original line number	Diff line number	Diff line
		@@ -119,6 +119,7 @@ import java.util.Comparator;
		import java.util.HashSet;
		import java.util.List;
		import java.util.function.BiConsumer;
		import java.util.function.Consumer;

		import javax.inject.Inject;
		import javax.inject.Named;
		@@ -470,6 +471,7 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
		}
		};

		private Consumer<Integer> mScrollListener;
		private final ScrollAdapter mScrollAdapter = new ScrollAdapter() {
		@Override
		public boolean isScrolledToTop() {
		@@ -552,8 +554,12 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
		}
		}

		void setSectionPadding(float margin) {
		mAmbientState.setSectionPadding(margin);
		/**
		* Set the overexpansion of the panel to be applied to the view.
		*/
		void setOverExpansion(float margin) {
		mAmbientState.setOverExpansion(margin);
		updateStackPosition();
		requestChildrenUpdate();
		}

		@@ -1136,7 +1142,8 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
		*/
		private void updateStackPosition() {
		// Consider interpolating from an mExpansionStartY for use on lockscreen and AOD
		float endTopPosition = mTopPadding + mExtraTopInsetForFullShadeTransition;
		float endTopPosition = mTopPadding + mExtraTopInsetForFullShadeTransition
		+ mAmbientState.getOverExpansion();
		final float fraction = mAmbientState.getExpansionFraction();
		final float stackY = MathUtils.lerp(0, endTopPosition, fraction);
		mAmbientState.setStackY(stackY);
		@@ -1144,7 +1151,6 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
		mOnStackYChanged.run();
		}
		if (mQsExpansionFraction <= 0) {
		final float scrimTopPadding = mAmbientState.isOnKeyguard() ? 0 : mSidePaddings;
		final float stackEndHeight = Math.max(0f,
		getHeight() - getEmptyBottomMargin() - mTopPadding);
		mAmbientState.setStackEndHeight(stackEndHeight);
		@@ -1166,7 +1172,7 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
		@ShadeViewRefactor(RefactorComponent.COORDINATOR)
		public void setExpandedHeight(float height) {
		final float shadeBottom = getHeight() - getEmptyBottomMargin();
		final float expansionFraction = MathUtils.constrain(height / shadeBottom, 0f, 1f);
		final float expansionFraction = MathUtils.saturate(height / shadeBottom);
		mAmbientState.setExpansionFraction(expansionFraction);
		updateStackPosition();

		@@ -2395,8 +2401,8 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
		float topOverScroll = getCurrentOverScrollAmount(true);
		return mScrolledToTopOnFirstDown
		&& !mExpandedInThisMotion
		&& topOverScroll > mMinTopOverScrollToEscape
		&& initialVelocity > 0;
		&& (initialVelocity > mMinimumVelocity
		\|\| (topOverScroll > mMinTopOverScrollToEscape && initialVelocity > 0));
		}

		/**
		@@ -4552,6 +4558,9 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
		}

		private void updateOnScrollChange() {
		if (mScrollListener != null) {
		mScrollListener.accept(mOwnScrollY);
		}
		updateForwardAndBackwardScrollability();
		requestChildrenUpdate();
		}
		@@ -5162,6 +5171,13 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
		requestChildrenUpdate();
		}

		/**
		* Set a listener to when scrolling changes.
		*/
		public void setOnScrollListener(Consumer<Integer> listener) {
		mScrollListener = listener;
		}

		/**
		* A listener that is notified when the empty space below the notifications is clicked on
		*/