Allow ViewHierarchyAnimator to exclude child views from animations. (b072e53b) · Commits · e / os / android_frameworks_base

packages/SystemUI/animation/src/com/android/systemui/animation/ViewHierarchyAnimator.kt

+34 −8

Original line number	Diff line number	Diff line
		@@ -70,6 +70,9 @@ class ViewHierarchyAnimator {
		* If a new layout change happens while an animation is already in progress, the animation
		* is updated to continue from the current values to the new end state.
		*
		* A set of [excludedViews] can be passed. If any dependent view from [rootView] matches an
		* entry in this set, changes to that view will not be animated.
		*
		* The animator continues to respond to layout changes until [stopAnimating] is called.
		*
		* Successive calls to this method override the previous settings ([interpolator] and
		@@ -82,9 +85,16 @@ class ViewHierarchyAnimator {
		fun animate(
		rootView: View,
		interpolator: Interpolator = DEFAULT_INTERPOLATOR,
		duration: Long = DEFAULT_DURATION
		duration: Long = DEFAULT_DURATION,
		excludedViews: Set<View> = emptySet()
		): Boolean {
		return animate(rootView, interpolator, duration, ephemeral = false)
		return animate(
		rootView,
		interpolator,
		duration,
		ephemeral = false,
		excludedViews = excludedViews
		)
		}

		/**
		@@ -95,16 +105,24 @@ class ViewHierarchyAnimator {
		fun animateNextUpdate(
		rootView: View,
		interpolator: Interpolator = DEFAULT_INTERPOLATOR,
		duration: Long = DEFAULT_DURATION
		duration: Long = DEFAULT_DURATION,
		excludedViews: Set<View> = emptySet()
		): Boolean {
		return animate(rootView, interpolator, duration, ephemeral = true)
		return animate(
		rootView,
		interpolator,
		duration,
		ephemeral = true,
		excludedViews = excludedViews
		)
		}

		private fun animate(
		rootView: View,
		interpolator: Interpolator,
		duration: Long,
		ephemeral: Boolean
		ephemeral: Boolean,
		excludedViews: Set<View> = emptySet()
		): Boolean {
		if (
		!occupiesSpace(
		@@ -119,7 +137,7 @@ class ViewHierarchyAnimator {
		}

		val listener = createUpdateListener(interpolator, duration, ephemeral)
		addListener(rootView, listener, recursive = true)
		addListener(rootView, listener, recursive = true, excludedViews = excludedViews)
		return true
		}

		@@ -921,8 +939,11 @@ class ViewHierarchyAnimator {
		private fun addListener(
		view: View,
		listener: View.OnLayoutChangeListener,
		recursive: Boolean = false
		recursive: Boolean = false,
		excludedViews: Set<View> = emptySet()
		) {
		if (excludedViews.contains(view)) return

		// Make sure that only one listener is active at a time.
		val previousListener = view.getTag(R.id.tag_layout_listener)
		if (previousListener != null && previousListener is View.OnLayoutChangeListener) {
		@@ -933,7 +954,12 @@ class ViewHierarchyAnimator {
		view.setTag(R.id.tag_layout_listener, listener)
		if (view is ViewGroup && recursive) {
		for (i in 0 until view.childCount) {
		addListener(view.getChildAt(i), listener, recursive = true)
		addListener(
		view.getChildAt(i),
		listener,
		recursive = true,
		excludedViews = excludedViews
		)
		}
		}
		}

packages/SystemUI/tests/src/com/android/systemui/animation/ViewHierarchyAnimatorTest.kt

+36 −2

Original line number	Diff line number	Diff line
		@@ -8,6 +8,7 @@ import android.view.ViewGroup
		import android.widget.LinearLayout
		import android.widget.RelativeLayout
		import androidx.test.filters.SmallTest
		import com.android.app.animation.Interpolators
		import com.android.systemui.SysuiTestCase
		import com.android.systemui.util.children
		import junit.framework.Assert.assertEquals
		@@ -19,7 +20,6 @@ import org.junit.After
		import org.junit.Before
		import org.junit.Test
		import org.junit.runner.RunWith
		import com.android.app.animation.Interpolators

		@SmallTest
		@RunWith(AndroidTestingRunner::class)
		@@ -178,7 +178,7 @@ ViewHierarchyAnimatorTest : SysuiTestCase() {
		}

		@Test
		fun animatesRootAndChildren() {
		fun animatesRootAndChildren_withoutExcludedViews() {
		setUpRootWithChildren()

		val success = ViewHierarchyAnimator.animate(rootView)
		@@ -207,6 +207,40 @@ ViewHierarchyAnimatorTest : SysuiTestCase() {
		checkBounds(rootView.getChildAt(1), l = 95, t = 0, r = 190, b = 100)
		}

		@Test
		fun animatesRootAndChildren_withExcludedViews() {
		setUpRootWithChildren()

		val success = ViewHierarchyAnimator.animate(
		rootView,
		excludedViews = setOf(rootView.getChildAt(0))
		)
		// Change all bounds.
		rootView.measure(
		View.MeasureSpec.makeMeasureSpec(180, View.MeasureSpec.EXACTLY),
		View.MeasureSpec.makeMeasureSpec(100, View.MeasureSpec.EXACTLY)
		)
		rootView.layout(10 /* l /, 20 / t /, 200 / r /, 120 / b */)

		assertTrue(success)
		assertNotNull(rootView.getTag(R.id.tag_animator))
		assertNull(rootView.getChildAt(0).getTag(R.id.tag_animator))
		assertNotNull(rootView.getChildAt(1).getTag(R.id.tag_animator))
		// The initial values for the affected views should be those of the previous layout, while
		// the excluded view should be at the final values from the beginning.
		checkBounds(rootView, l = 0, t = 0, r = 200, b = 100)
		checkBounds(rootView.getChildAt(0), l = 0, t = 0, r = 90, b = 100)
		checkBounds(rootView.getChildAt(1), l = 100, t = 0, r = 200, b = 100)
		endAnimation(rootView)
		assertNull(rootView.getTag(R.id.tag_animator))
		assertNull(rootView.getChildAt(0).getTag(R.id.tag_animator))
		assertNull(rootView.getChildAt(1).getTag(R.id.tag_animator))
		// The end values should be those of the latest layout.
		checkBounds(rootView, l = 10, t = 20, r = 200, b = 120)
		checkBounds(rootView.getChildAt(0), l = 0, t = 0, r = 90, b = 100)
		checkBounds(rootView.getChildAt(1), l = 90, t = 0, r = 180, b = 100)
		}

		@Test
		fun animatesInvisibleViews() {
		rootView.layout(10 /* l /, 10 / t /, 50 / r /, 50 / b */)