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Commit 7f2fa992 authored by Lyn Han's avatar Lyn Han Committed by Automerger Merge Worker
Browse files

Merge "Fix HUN pinning" into tm-qpr-dev am: bc1144e6 am: 7df96aa9 

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19120487



Change-Id: I86affd19fae4a4bae2f93c8f13506bb2f82e903d
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents 4e188f31 7df96aa9

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

+73 −24
Original line number Diff line number Diff line
@@ -24,8 +24,7 @@ import android.util.MathUtils; 
import android.view.View;

import android.view.ViewGroup;



import androidx.annotation.VisibleForTesting;



import com.android.internal.annotations.VisibleForTesting;

import com.android.internal.policy.SystemBarUtils;

import com.android.keyguard.BouncerPanelExpansionCalculator;

import com.android.systemui.R;
@@ -65,6 +64,9 @@ public class StackScrollAlgorithm { 
    private int mPinnedZTranslationExtra;

    private float mNotificationScrimPadding;

    private int mMarginBottom;

    private float mQuickQsOffsetHeight;

    private float mSmallCornerRadius;

    private float mLargeCornerRadius;



    public StackScrollAlgorithm(

            Context context,
@@ -74,10 +76,10 @@ public class StackScrollAlgorithm { 
    }



    public void initView(Context context) {

        initConstants(context);

        updateResources(context);

    }



    private void initConstants(Context context) {

    private void updateResources(Context context) {

        Resources res = context.getResources();

        mPaddingBetweenElements = res.getDimensionPixelSize(

                R.dimen.notification_divider_height);
@@ -93,6 +95,9 @@ public class StackScrollAlgorithm { 
                R.dimen.notification_section_divider_height_lockscreen);

        mNotificationScrimPadding = res.getDimensionPixelSize(R.dimen.notification_side_paddings);

        mMarginBottom = res.getDimensionPixelSize(R.dimen.notification_panel_margin_bottom);

        mQuickQsOffsetHeight = SystemBarUtils.getQuickQsOffsetHeight(context);

        mSmallCornerRadius = res.getDimension(R.dimen.notification_corner_radius_small);

        mLargeCornerRadius = res.getDimension(R.dimen.notification_corner_radius);

    }



    /**
@@ -441,6 +446,15 @@ public class StackScrollAlgorithm { 
        return false;

    }



    @VisibleForTesting

    void maybeUpdateHeadsUpIsVisible(ExpandableViewState viewState, boolean isShadeExpanded,

            boolean mustStayOnScreen, boolean topVisible, float viewEnd, float hunMax) {



        if (isShadeExpanded && mustStayOnScreen && topVisible) {

            viewState.headsUpIsVisible = viewEnd < hunMax;

        }

    }



    // TODO(b/172289889) polish shade open from HUN

    /**

     * Populates the {@link ExpandableViewState} for a single child.
@@ -474,14 +488,6 @@ public class StackScrollAlgorithm { 
                    : ShadeInterpolation.getContentAlpha(expansion);

        }



        if (ambientState.isShadeExpanded() && view.mustStayOnScreen()

                && viewState.yTranslation >= 0) {

            // Even if we're not scrolled away we're in view and we're also not in the

            // shelf. We can relax the constraints and let us scroll off the top!

            float end = viewState.yTranslation + viewState.height + ambientState.getStackY();

            viewState.headsUpIsVisible = end < ambientState.getMaxHeadsUpTranslation();

        }



        final float expansionFraction = getExpansionFractionWithoutShelf(

                algorithmState, ambientState);
@@ -497,8 +503,15 @@ public class StackScrollAlgorithm { 
            algorithmState.mCurrentExpandedYPosition += gap;

        }



        // Must set viewState.yTranslation _before_ use.

        // Incoming views have yTranslation=0 by default.

        viewState.yTranslation = algorithmState.mCurrentYPosition;



        maybeUpdateHeadsUpIsVisible(viewState, ambientState.isShadeExpanded(),

                view.mustStayOnScreen(), /* topVisible */ viewState.yTranslation >= 0,

                /* viewEnd */ viewState.yTranslation + viewState.height + ambientState.getStackY(),

                /* hunMax */ ambientState.getMaxHeadsUpTranslation()

        );

        if (view instanceof FooterView) {

            final boolean shadeClosed = !ambientState.isShadeExpanded();

            final boolean isShelfShowing = algorithmState.firstViewInShelf != null;
@@ -682,7 +695,8 @@ public class StackScrollAlgorithm { 
                if (row.mustStayOnScreen() && !childState.headsUpIsVisible

                        && !row.showingPulsing()) {

                    // Ensure that the heads up is always visible even when scrolled off

                    clampHunToTop(ambientState, row, childState);

                    clampHunToTop(mQuickQsOffsetHeight, ambientState.getStackTranslation(),

                            row.getCollapsedHeight(), childState);

                    if (isTopEntry && row.isAboveShelf()) {

                        // the first hun can't get off screen.

                        clampHunToMaxTranslation(ambientState, row, childState);
@@ -719,27 +733,62 @@ public class StackScrollAlgorithm { 
        }

    }



    private void clampHunToTop(AmbientState ambientState, ExpandableNotificationRow row,

            ExpandableViewState childState) {

        float newTranslation = Math.max(ambientState.getTopPadding()

                + ambientState.getStackTranslation(), childState.yTranslation);

        childState.height = (int) Math.max(childState.height - (newTranslation

                - childState.yTranslation), row.getCollapsedHeight());

        childState.yTranslation = newTranslation;

    /**

     * When shade is open and we are scrolled to the bottom of notifications,

     * clamp incoming HUN in its collapsed form, right below qs offset.

     * Transition pinned collapsed HUN to full height when scrolling back up.

     */

    @VisibleForTesting

    void clampHunToTop(float quickQsOffsetHeight, float stackTranslation, float collapsedHeight,

            ExpandableViewState viewState) {



        final float newTranslation = Math.max(quickQsOffsetHeight + stackTranslation,

                viewState.yTranslation);



        // Transition from collapsed pinned state to fully expanded state

        // when the pinned HUN approaches its actual location (when scrolling back to top).

        final float distToRealY = newTranslation - viewState.yTranslation;

        viewState.height = (int) Math.max(viewState.height - distToRealY, collapsedHeight);

        viewState.yTranslation = newTranslation;

    }



    // Pin HUN to bottom of expanded QS

    // while the rest of notifications are scrolled offscreen.

    private void clampHunToMaxTranslation(AmbientState ambientState, ExpandableNotificationRow row,

            ExpandableViewState childState) {

        float newTranslation;

        float maxHeadsUpTranslation = ambientState.getMaxHeadsUpTranslation();

        float maxShelfPosition = ambientState.getInnerHeight() + ambientState.getTopPadding()

        final float maxShelfPosition = ambientState.getInnerHeight() + ambientState.getTopPadding()

                + ambientState.getStackTranslation();

        maxHeadsUpTranslation = Math.min(maxHeadsUpTranslation, maxShelfPosition);

        float bottomPosition = maxHeadsUpTranslation - row.getCollapsedHeight();

        newTranslation = Math.min(childState.yTranslation, bottomPosition);



        final float bottomPosition = maxHeadsUpTranslation - row.getCollapsedHeight();

        final float newTranslation = Math.min(childState.yTranslation, bottomPosition);

        childState.height = (int) Math.min(childState.height, maxHeadsUpTranslation

                - newTranslation);

        childState.yTranslation = newTranslation;



        // Animate pinned HUN bottom corners to and from original roundness.

        final float originalCornerRadius =

                row.isLastInSection() ? 1f : (mSmallCornerRadius / mLargeCornerRadius);

        final float roundness = computeCornerRoundnessForPinnedHun(mHostView.getHeight(),

                ambientState.getStackY(), getMaxAllowedChildHeight(row), originalCornerRadius);

        row.setBottomRoundness(roundness, /* animate= */ false);

    }



    @VisibleForTesting

    float computeCornerRoundnessForPinnedHun(float hostViewHeight, float stackY,

            float viewMaxHeight, float originalCornerRadius) {



        // Compute y where corner roundness should be in its original unpinned state.

        // We use view max height because the pinned collapsed HUN expands to max height

        // when it becomes unpinned.

        final float originalRoundnessY = hostViewHeight - viewMaxHeight;



        final float distToOriginalRoundness = Math.max(0f, stackY - originalRoundnessY);

        final float progressToPinnedRoundness = Math.min(1f,

                distToOriginalRoundness / viewMaxHeight);



        return MathUtils.lerp(originalCornerRadius, 1f, progressToPinnedRoundness);

    }



    protected int getMaxAllowedChildHeight(View child) {

packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithmTest.kt

+175 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ import com.android.systemui.statusbar.phone.StatusBarKeyguardViewManager 
import com.google.common.truth.Truth.assertThat

import junit.framework.Assert.assertFalse

import junit.framework.Assert.assertTrue

import junit.framework.Assert.assertEquals

import org.junit.Before

import org.junit.Test

import org.mockito.Mockito.mock
@@ -164,4 +165,178 @@ class StackScrollAlgorithmTest : SysuiTestCase() { 
        stackScrollAlgorithm.updateViewWithShelf(expandableView, expandableViewState, shelfStart)

        assertFalse(expandableViewState.hidden)

    }



    @Test

    fun maybeUpdateHeadsUpIsVisible_endVisible_true() {

        val expandableViewState = ExpandableViewState()

        expandableViewState.headsUpIsVisible = false



        stackScrollAlgorithm.maybeUpdateHeadsUpIsVisible(expandableViewState,

                /* isShadeExpanded= */ true,

                /* mustStayOnScreen= */ true,

                /* isViewEndVisible= */ true,

                /* viewEnd= */ 0f,

                /* maxHunY= */ 10f)



        assertTrue(expandableViewState.headsUpIsVisible)

    }



    @Test

    fun maybeUpdateHeadsUpIsVisible_endHidden_false() {

        val expandableViewState = ExpandableViewState()

        expandableViewState.headsUpIsVisible = true



        stackScrollAlgorithm.maybeUpdateHeadsUpIsVisible(expandableViewState,

                /* isShadeExpanded= */ true,

                /* mustStayOnScreen= */ true,

                /* isViewEndVisible= */ true,

                /* viewEnd= */ 10f,

                /* maxHunY= */ 0f)



        assertFalse(expandableViewState.headsUpIsVisible)

    }



    @Test

    fun maybeUpdateHeadsUpIsVisible_shadeClosed_noUpdate() {

        val expandableViewState = ExpandableViewState()

        expandableViewState.headsUpIsVisible = true



        stackScrollAlgorithm.maybeUpdateHeadsUpIsVisible(expandableViewState,

                /* isShadeExpanded= */ false,

                /* mustStayOnScreen= */ true,

                /* isViewEndVisible= */ true,

                /* viewEnd= */ 10f,

                /* maxHunY= */ 1f)



        assertTrue(expandableViewState.headsUpIsVisible)

    }



    @Test

    fun maybeUpdateHeadsUpIsVisible_notHUN_noUpdate() {

        val expandableViewState = ExpandableViewState()

        expandableViewState.headsUpIsVisible = true



        stackScrollAlgorithm.maybeUpdateHeadsUpIsVisible(expandableViewState,

                /* isShadeExpanded= */ true,

                /* mustStayOnScreen= */ false,

                /* isViewEndVisible= */ true,

                /* viewEnd= */ 10f,

                /* maxHunY= */ 1f)



        assertTrue(expandableViewState.headsUpIsVisible)

    }



    @Test

    fun maybeUpdateHeadsUpIsVisible_topHidden_noUpdate() {

        val expandableViewState = ExpandableViewState()

        expandableViewState.headsUpIsVisible = true



        stackScrollAlgorithm.maybeUpdateHeadsUpIsVisible(expandableViewState,

                /* isShadeExpanded= */ true,

                /* mustStayOnScreen= */ true,

                /* isViewEndVisible= */ false,

                /* viewEnd= */ 10f,

                /* maxHunY= */ 1f)



        assertTrue(expandableViewState.headsUpIsVisible)

    }



    @Test

    fun clampHunToTop_viewYGreaterThanQqs_viewYUnchanged() {

        val expandableViewState = ExpandableViewState()

        expandableViewState.yTranslation = 50f



        stackScrollAlgorithm.clampHunToTop(/* quickQsOffsetHeight= */ 10f,

                /* stackTranslation= */ 0f,

                /* collapsedHeight= */ 1f, expandableViewState)



        // qqs (10 + 0) < viewY (50)

        assertEquals(50f, expandableViewState.yTranslation)

    }



    @Test

    fun clampHunToTop_viewYLessThanQqs_viewYChanged() {

        val expandableViewState = ExpandableViewState()

        expandableViewState.yTranslation = -10f



        stackScrollAlgorithm.clampHunToTop(/* quickQsOffsetHeight= */ 10f,

                /* stackTranslation= */ 0f,

                /* collapsedHeight= */ 1f, expandableViewState)



        // qqs (10 + 0) > viewY (-10)

        assertEquals(10f, expandableViewState.yTranslation)

    }





    @Test

    fun clampHunToTop_viewYFarAboveVisibleStack_heightCollapsed() {

        val expandableViewState = ExpandableViewState()

        expandableViewState.height = 20

        expandableViewState.yTranslation = -100f



        stackScrollAlgorithm.clampHunToTop(/* quickQsOffsetHeight= */ 10f,

                /* stackTranslation= */ 0f,

                /* collapsedHeight= */ 10f, expandableViewState)



        // newTranslation = max(10, -100) = 10

        // distToRealY = 10 - (-100f) = 110

        // height = max(20 - 110, 10f)

        assertEquals(10, expandableViewState.height)

    }



    @Test

    fun clampHunToTop_viewYNearVisibleStack_heightTallerThanCollapsed() {

        val expandableViewState = ExpandableViewState()

        expandableViewState.height = 20

        expandableViewState.yTranslation = 5f



        stackScrollAlgorithm.clampHunToTop(/* quickQsOffsetHeight= */ 10f,

                /* stackTranslation= */ 0f,

                /* collapsedHeight= */ 10f, expandableViewState)



        // newTranslation = max(10, 5) = 10

        // distToRealY = 10 - 5 = 5

        // height = max(20 - 5, 10) = 15

        assertEquals(15, expandableViewState.height)

    }



    @Test

    fun computeCornerRoundnessForPinnedHun_stackBelowScreen_round() {

        val currentRoundness = stackScrollAlgorithm.computeCornerRoundnessForPinnedHun(

                /* hostViewHeight= */ 100f,

                /* stackY= */ 110f,

                /* viewMaxHeight= */ 20f,

                /* originalCornerRoundness= */ 0f)

        assertEquals(1f, currentRoundness)

    }



    @Test

    fun computeCornerRoundnessForPinnedHun_stackAboveScreenBelowPinPoint_halfRound() {

        val currentRoundness = stackScrollAlgorithm.computeCornerRoundnessForPinnedHun(

                /* hostViewHeight= */ 100f,

                /* stackY= */ 90f,

                /* viewMaxHeight= */ 20f,

                /* originalCornerRoundness= */ 0f)

        assertEquals(0.5f, currentRoundness)

    }



    @Test

    fun computeCornerRoundnessForPinnedHun_stackAbovePinPoint_notRound() {

        val currentRoundness = stackScrollAlgorithm.computeCornerRoundnessForPinnedHun(

                /* hostViewHeight= */ 100f,

                /* stackY= */ 0f,

                /* viewMaxHeight= */ 20f,

                /* originalCornerRoundness= */ 0f)

        assertEquals(0f, currentRoundness)

    }



    @Test

    fun computeCornerRoundnessForPinnedHun_originallyRoundAndStackAbovePinPoint_round() {

        val currentRoundness = stackScrollAlgorithm.computeCornerRoundnessForPinnedHun(

                /* hostViewHeight= */ 100f,

                /* stackY= */ 0f,

                /* viewMaxHeight= */ 20f,

                /* originalCornerRoundness= */ 1f)

        assertEquals(1f, currentRoundness)

    }

}