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Commit 4a59055c authored by Treehugger Robot's avatar Treehugger Robot Committed by Android (Google) Code Review
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Merge "Annotate MotionValue properties with @FrequentlyChangingValue" into main

parents 5fa13efc 5fbfc168

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

+15 −6
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
package com.android.mechanics



import androidx.compose.runtime.FloatState

import androidx.compose.runtime.annotation.FrequentlyChangingValue

import androidx.compose.runtime.derivedStateOf

import androidx.compose.runtime.getValue

import androidx.compose.runtime.mutableFloatStateOf
@@ -139,10 +140,11 @@ class MotionValue( 
        )



    /** The [MotionSpec] describing the mapping of this [MotionValue]'s input to the output. */

    val spec: MotionSpec by impl::spec

    // TODO(b/441041846): This should not change frequently

    @get:FrequentlyChangingValue val spec: MotionSpec by impl::spec



    /** Animated [output] value. */

    val output: Float by impl::output

    @get:FrequentlyChangingValue val output: Float by impl::output



    /**

     * [output] value, but without animations.
@@ -151,13 +153,15 @@ class MotionValue( 
     *

     * While [isStable], [outputTarget] and [output] are the same value.

     */

    val outputTarget: Float by impl::outputTarget

    // TODO(b/441041846): This should not change frequently

    @get:FrequentlyChangingValue val outputTarget: Float by impl::outputTarget



    /** The [output] exposed as [FloatState]. */

    override val floatValue: Float by impl::output

    @get:FrequentlyChangingValue override val floatValue: Float by impl::output



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

    val isStable: Boolean by impl::isStable

    // TODO(b/441041846): This should not change frequently

    @get:FrequentlyChangingValue val isStable: Boolean by impl::isStable



    /**

     * Whether the output can change its value.
@@ -167,18 +171,23 @@ class MotionValue( 
     * output is guaranteed not to change unless the [spec] or the input (enough to change segments)

     * changes. This can be used to avoid unnecessary work like recomposition or re-measurement.

     */

    val isOutputFixed: Boolean by impl::isOutputFixed

    // TODO(b/441041846): This should not change frequently

    @get:FrequentlyChangingValue val isOutputFixed: Boolean by impl::isOutputFixed



    /**

     * The current value for the [SemanticKey].

     *

     * `null` if not defined in the spec.

     */

    // TODO(b/441041846): This should not change frequently

    @FrequentlyChangingValue

    operator fun <T> get(key: SemanticKey<T>): T? {

        return impl.semanticState(key)

    }



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

    // TODO(b/441041846): This should not change frequently

    @get:FrequentlyChangingValue

    val segmentKey: SegmentKey

        get() = impl.currentComputedValues.segment.key