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Commit 9db74a26 authored by Mike Schneider's avatar Mike Schneider
Browse files

Expose current segment key on motion value 

Test: Unit tests
Flag: com.android.systemui.scene_container
Bug: 402119418
Change-Id: I1be67e5231124591d6c3e31d67ba02ae9c21bac6
parent d00cd37f

mechanics/src/com/android/mechanics/MotionValue.kt

+5 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ import com.android.mechanics.spec.InputDirection 
import com.android.mechanics.spec.Mapping

import com.android.mechanics.spec.MotionSpec

import com.android.mechanics.spec.SegmentData

import com.android.mechanics.spec.SegmentKey

import com.android.mechanics.spec.SemanticKey

import com.android.mechanics.spring.SpringState

import java.util.concurrent.atomic.AtomicInteger
@@ -150,6 +151,10 @@ class MotionValue( 
        return impl.semanticState(key)

    }



    /** The current segment used to compute the output. */

    val segmentKey: SegmentKey

        get() = impl.currentSegment.key



    /**

     * Keeps the [MotionValue]'s animated output running.

     *

mechanics/src/com/android/mechanics/view/ViewMotionValue.kt

+7 −2
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ import com.android.mechanics.impl.GuaranteeState 
import com.android.mechanics.spec.InputDirection

import com.android.mechanics.spec.MotionSpec

import com.android.mechanics.spec.SegmentData

import com.android.mechanics.spec.SegmentKey

import com.android.mechanics.spec.SemanticKey

import com.android.mechanics.spring.SpringState

import java.util.concurrent.atomic.AtomicInteger
@@ -77,6 +78,9 @@ class ViewMotionValue( 
     */

    val outputTarget: Float by impl::outputTarget



    /** Whether an animation is currently running. */

    val isStable: Boolean by impl::isStable



    /**

     * The current value for the [SemanticKey].

     *
@@ -86,8 +90,9 @@ class ViewMotionValue( 
        return impl.semanticState(key)

    }



    /** Whether an animation is currently running. */

    val isStable: Boolean by impl::isStable

    /** The current segment used to compute the output. */

    val segmentKey: SegmentKey

        get() = impl.currentSegment.key



    val label: String? by impl::label

mechanics/tests/src/com/android/mechanics/MotionValueTest.kt

+19 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ import androidx.compose.ui.test.ExperimentalTestApi 
import androidx.compose.ui.test.TestMonotonicFrameClock

import androidx.compose.ui.test.junit4.createComposeRule

import androidx.test.ext.junit.runners.AndroidJUnit4

import com.android.mechanics.spec.Breakpoint

import com.android.mechanics.spec.BreakpointKey

import com.android.mechanics.spec.CanBeLastSegment

import com.android.mechanics.spec.DirectionalMotionSpec
@@ -36,6 +37,7 @@ import com.android.mechanics.spec.Guarantee 
import com.android.mechanics.spec.InputDirection

import com.android.mechanics.spec.Mapping

import com.android.mechanics.spec.MotionSpec

import com.android.mechanics.spec.SegmentKey

import com.android.mechanics.spec.SemanticKey

import com.android.mechanics.spec.SemanticValue

import com.android.mechanics.spec.buildDirectionalMotionSpec
@@ -416,6 +418,23 @@ class MotionValueTest { 
        assertThat(underTest[s1]).isEqualTo("two")

    }



    @Test

    fun segment_returnsCurrentSegmentKey() {

        val spec =

            specBuilder(Mapping.Zero) {

                constantValue(1f, 1f, key = B1)

                constantValue(2f, 2f, key = B2)

            }



        val input = mutableFloatStateOf(1f)

        val underTest = MotionValue(input::value, FakeGestureContext, spec)



        assertThat(underTest.segmentKey).isEqualTo(SegmentKey(B1, B2, InputDirection.Max))

        input.floatValue = 2f

        assertThat(underTest.segmentKey)

            .isEqualTo(SegmentKey(B2, Breakpoint.maxLimit.key, InputDirection.Max))

    }



    @Test

    fun derivedValue_reflectsInputChangeInSameFrame() {

        motion.goldenTest(

mechanics/tests/src/com/android/mechanics/view/ViewMotionValueTest.kt

+22 −0
Original line number Diff line number Diff line
@@ -27,10 +27,12 @@ import androidx.test.ext.junit.runners.AndroidJUnit4 
import com.android.mechanics.MotionValueTest.Companion.B1

import com.android.mechanics.MotionValueTest.Companion.B2

import com.android.mechanics.MotionValueTest.Companion.specBuilder

import com.android.mechanics.spec.Breakpoint

import com.android.mechanics.spec.Guarantee

import com.android.mechanics.spec.InputDirection

import com.android.mechanics.spec.Mapping

import com.android.mechanics.spec.MotionSpec

import com.android.mechanics.spec.SegmentKey

import com.android.mechanics.spec.SemanticKey

import com.android.mechanics.spec.with

import com.android.mechanics.testing.EmptyTestActivity
@@ -130,6 +132,26 @@ class ViewMotionValueTest { 
        }

    }



    @Test

    fun segment_returnsCurrentSegmentKey() {

        activityRule.scenario.onActivity {

            val spec =

                specBuilder(Mapping.Zero) {

                    constantValue(1f, 1f, key = B1)

                    constantValue(2f, 2f, key = B2)

                }



            val gestureContext = DistanceGestureContext(0f, InputDirection.Max, 5f)

            val underTest = ViewMotionValue(1f, gestureContext, spec)



            assertThat(underTest.segmentKey).isEqualTo(SegmentKey(B1, B2, InputDirection.Max))

            underTest.input = 2f

            animatorTestRule.advanceTimeBy(16L)

            assertThat(underTest.segmentKey)

                .isEqualTo(SegmentKey(B2, Breakpoint.maxLimit.key, InputDirection.Max))

        }

    }



    @Test

    fun gestureContext_listensToGestureContextUpdates() =

        goldenTest(