Allow ViewHierarchyAnimator to exclude child views from animations.
This has been a long requested feature and b/283456173 provided the
right opportunity to implement it. I have tested it within the privacy
dialog and the behavior is as expected.
Bug: 283456173
Test: unit tests included
Change-Id: I9b97e2e7aaff603174cabd4328f17ec1884816ee
diff --git a/packages/SystemUI/animation/src/com/android/systemui/animation/ViewHierarchyAnimator.kt b/packages/SystemUI/animation/src/com/android/systemui/animation/ViewHierarchyAnimator.kt
index 8e79e3c..38b99cc 100644
--- a/packages/SystemUI/animation/src/com/android/systemui/animation/ViewHierarchyAnimator.kt
+++ b/packages/SystemUI/animation/src/com/android/systemui/animation/ViewHierarchyAnimator.kt
@@ -70,6 +70,9 @@
* 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 @@
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 @@
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 @@
}
val listener = createUpdateListener(interpolator, duration, ephemeral)
- addListener(rootView, listener, recursive = true)
+ addListener(rootView, listener, recursive = true, excludedViews = excludedViews)
return true
}
@@ -921,8 +939,11 @@
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 @@
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
+ )
}
}
}
diff --git a/packages/SystemUI/tests/src/com/android/systemui/animation/ViewHierarchyAnimatorTest.kt b/packages/SystemUI/tests/src/com/android/systemui/animation/ViewHierarchyAnimatorTest.kt
index da9ceb4..212dad7 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/animation/ViewHierarchyAnimatorTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/animation/ViewHierarchyAnimatorTest.kt
@@ -8,6 +8,7 @@
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.Before
import org.junit.Test
import org.junit.runner.RunWith
-import com.android.app.animation.Interpolators
@SmallTest
@RunWith(AndroidTestingRunner::class)
@@ -178,7 +178,7 @@
}
@Test
- fun animatesRootAndChildren() {
+ fun animatesRootAndChildren_withoutExcludedViews() {
setUpRootWithChildren()
val success = ViewHierarchyAnimator.animate(rootView)
@@ -208,6 +208,40 @@
}
@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 */)
rootView.visibility = View.INVISIBLE