[Motion] Split-shade transition on LS: move keyguard even when media is not showing

- When media is showing, the keyguard is moved in sync with the media movement
- Now when media is not showing, keyguard is moved based on an offset defined in resources

Fixes: 226908761
Test: Unit tests + Manually
Change-Id: Ic04c2b64f01f03e99e899591c6189113582a4c2b

packages/SystemUI/res/values-sw600dp-land/dimens.xml

@@ -88,5 +88,11 @@
          whether the progress is > 0, therefore this value is not very important. -->
     <dimen name="lockscreen_shade_status_bar_transition_distance">@dimen/lockscreen_shade_full_transition_distance</dimen>
 
+    <dimen name="lockscreen_shade_keyguard_transition_distance">@dimen/lockscreen_shade_media_transition_distance</dimen>
+
+    <!-- Roughly the same distance as media on LS to media on QS. We will translate by this value
+         when media is not showing. -->
+    <dimen name="lockscreen_shade_keyguard_transition_vertical_offset">83dp</dimen>
+
     <dimen name="notification_panel_margin_horizontal">24dp</dimen>
 </resources>

packages/SystemUI/res/values-sw720dp-land/dimens.xml

@@ -28,4 +28,8 @@
     <dimen name="qs_media_session_height_expanded">251dp</dimen>
 
     <dimen name="lockscreen_shade_max_over_scroll_amount">42dp</dimen>
+
+    <!-- Roughly the same distance as media on LS to media on QS. We will translate by this value
+         when media is not showing. -->
+    <dimen name="lockscreen_shade_keyguard_transition_vertical_offset">93dp</dimen>
 </resources>

packages/SystemUI/res/values/dimens.xml

@@ -1170,6 +1170,13 @@
          whether the progress is > 0, therefore this value is not very important. -->
     <dimen name="lockscreen_shade_status_bar_transition_distance">@dimen/lockscreen_shade_full_transition_distance</dimen>
 
+    <!-- Distance that the full shade transition takes in order for the keyguard elements to fully
+         translate into their final position. -->
+    <dimen name="lockscreen_shade_keyguard_transition_distance">@dimen/lockscreen_shade_media_transition_distance</dimen>
+
+    <!-- The amount of vertical offset for the keyguard during the full shade transition. -->
+    <dimen name="lockscreen_shade_keyguard_transition_vertical_offset">0dp</dimen>
+
     <!-- Distance that the full shade transition takes in order for media to fully transition to
          the shade -->
     <dimen name="lockscreen_shade_media_transition_distance">120dp</dimen>

packages/SystemUI/src/com/android/systemui/media/MediaHierarchyManager.kt

@@ -809,11 +809,11 @@ class MediaHierarchyManager @Inject constructor(
         return resultBounds
     }
 
-    /**
-     * @return true if this transformation is guided by an external progress like a finger
-     */
-    private fun isCurrentlyInGuidedTransformation(): Boolean {
-        return hasValidStartAndEndLocations() && getTransformationProgress() >= 0
+    /** @return true if this transformation is guided by an external progress like a finger */
+    fun isCurrentlyInGuidedTransformation(): Boolean {
+        return hasValidStartAndEndLocations() &&
+                getTransformationProgress() >= 0 &&
+                areGuidedTransitionHostsVisible()
     }
 
     private fun hasValidStartAndEndLocations(): Boolean {

packages/SystemUI/src/com/android/systemui/statusbar/LockscreenShadeTransitionController.kt

@@ -163,6 +163,17 @@ class LockscreenShadeTransitionController @Inject constructor(
      */
     private var statusBarTransitionDistance = 0
 
+    /**
+     * Distance that the full shade transition takes in order for the keyguard elements to fully
+     * translate into their final position
+     */
+    private var keyguardTransitionDistance = 0
+
+    /**
+     * The amount of vertical offset for the keyguard during the full shade transition.
+     */
+    private var keyguardTransitionOffset = 0
+
     /**
      * Flag to make sure that the dragDownAmount is applied to the listeners even when in the
      * locked down shade.
@@ -275,6 +286,10 @@ class LockscreenShadeTransitionController @Inject constructor(
         statusBarTransitionDistance = context.resources.getDimensionPixelSize(
                 R.dimen.lockscreen_shade_status_bar_transition_distance)
         useSplitShade = LargeScreenUtils.shouldUseSplitNotificationShade(context.resources)
+        keyguardTransitionDistance = context.resources.getDimensionPixelSize(
+            R.dimen.lockscreen_shade_keyguard_transition_distance)
+        keyguardTransitionOffset = context.resources.getDimensionPixelSize(
+            R.dimen.lockscreen_shade_keyguard_transition_vertical_offset)
     }
 
     fun setStackScroller(nsslController: NotificationStackScrollLayoutController) {
@@ -485,13 +500,7 @@ class LockscreenShadeTransitionController @Inject constructor(
         val keyguardAlphaProgress =
             MathUtils.saturate(dragDownAmount / npvcKeyguardContentAlphaTransitionDistance)
         val keyguardAlpha = 1f - keyguardAlphaProgress
-        val keyguardTranslationY = if (useSplitShade) {
-            // On split-shade, the translationY of the keyguard should stay in sync with the
-            // translation of media.
-            mediaHierarchyManager.getGuidedTransformationTranslationY()
-        } else {
-            0
-        }
+        val keyguardTranslationY = calculateKeyguardTranslationY(dragDownAmount)
         notificationPanelController
             .setKeyguardTransitionProgress(keyguardAlpha, keyguardTranslationY)
 
@@ -499,6 +508,21 @@ class LockscreenShadeTransitionController @Inject constructor(
         notificationPanelController.setKeyguardStatusBarAlpha(statusBarAlpha)
     }
 
+    private fun calculateKeyguardTranslationY(dragDownAmount: Float): Int {
+        if (!useSplitShade) {
+            return 0
+        }
+        // On split-shade, the translationY of the keyguard should stay in sync with the
+        // translation of media.
+        if (mediaHierarchyManager.isCurrentlyInGuidedTransformation()) {
+            return mediaHierarchyManager.getGuidedTransformationTranslationY()
+        }
+        // When media is not showing, apply the default distance
+        val translationProgress = MathUtils.saturate(dragDownAmount / keyguardTransitionDistance)
+        val translationY = translationProgress * keyguardTransitionOffset
+        return translationY.toInt()
+    }
+
     private fun setDragDownAmountAnimated(
         target: Float,
         delay: Long = 0,

packages/SystemUI/tests/src/com/android/systemui/media/MediaHierarchyManagerTest.kt

@@ -16,6 +16,7 @@
 
 package com.android.systemui.media
 
+import org.mockito.Mockito.`when` as whenever
 import android.graphics.Rect
 import android.testing.AndroidTestingRunner
 import android.testing.TestableLooper
@@ -54,7 +55,6 @@ import org.mockito.Mockito.clearInvocations
 import org.mockito.Mockito.times
 import org.mockito.Mockito.verify
 import org.mockito.junit.MockitoJUnit
-import org.mockito.Mockito.`when` as whenever
 
 @SmallTest
 @RunWith(AndroidTestingRunner::class)
@@ -283,6 +283,28 @@ class MediaHierarchyManagerTest : SysuiTestCase() {
                 .isEqualTo(expectedTranslation)
     }
 
+    @Test
+    fun isCurrentlyInGuidedTransformation_hostsVisible_returnsTrue() {
+        goToLockscreen()
+        enterGuidedTransformation()
+        whenever(lockHost.visible).thenReturn(true)
+        whenever(qsHost.visible).thenReturn(true)
+        whenever(qqsHost.visible).thenReturn(true)
+
+        assertThat(mediaHiearchyManager.isCurrentlyInGuidedTransformation()).isTrue()
+    }
+
+    @Test
+    fun isCurrentlyInGuidedTransformation_hostNotVisible_returnsTrue() {
+        goToLockscreen()
+        enterGuidedTransformation()
+        whenever(lockHost.visible).thenReturn(false)
+        whenever(qsHost.visible).thenReturn(true)
+        whenever(qqsHost.visible).thenReturn(true)
+
+        assertThat(mediaHiearchyManager.isCurrentlyInGuidedTransformation()).isFalse()
+    }
+
     private fun enableSplitShade() {
         context.getOrCreateTestableResources().addOverride(
             R.bool.config_use_split_notification_shade, true

packages/SystemUI/tests/src/com/android/systemui/statusbar/LockscreenShadeTransitionControllerTest.kt

@@ -298,8 +298,9 @@ class LockscreenShadeTransitionControllerTest : SysuiTestCase() {
     fun setDragAmount_notInSplitShade_setsKeyguardTranslationToZero() {
         val mediaTranslationY = 123
         disableSplitShade()
+        whenever(mediaHierarchyManager.isCurrentlyInGuidedTransformation()).thenReturn(true)
         whenever(mediaHierarchyManager.getGuidedTransformationTranslationY())
-                .thenReturn(mediaTranslationY)
+            .thenReturn(mediaTranslationY)
 
         transitionController.dragDownAmount = 10f
 
@@ -310,13 +311,33 @@ class LockscreenShadeTransitionControllerTest : SysuiTestCase() {
     fun setDragAmount_inSplitShade_setsKeyguardTranslationBasedOnMediaTranslation() {
         val mediaTranslationY = 123
         enableSplitShade()
+        whenever(mediaHierarchyManager.isCurrentlyInGuidedTransformation()).thenReturn(true)
         whenever(mediaHierarchyManager.getGuidedTransformationTranslationY())
-                .thenReturn(mediaTranslationY)
+            .thenReturn(mediaTranslationY)
 
         transitionController.dragDownAmount = 10f
 
         verify(notificationPanelController)
-                .setKeyguardTransitionProgress(anyFloat(), eq(mediaTranslationY))
+            .setKeyguardTransitionProgress(anyFloat(), eq(mediaTranslationY))
+    }
+
+    @Test
+    fun setDragAmount_inSplitShade_mediaNotShowing_setsKeyguardTranslationBasedOnDistance() {
+        enableSplitShade()
+        whenever(mediaHierarchyManager.isCurrentlyInGuidedTransformation()).thenReturn(false)
+        whenever(mediaHierarchyManager.getGuidedTransformationTranslationY()).thenReturn(123)
+
+        transitionController.dragDownAmount = 10f
+
+        val distance =
+            context.resources.getDimensionPixelSize(
+                R.dimen.lockscreen_shade_keyguard_transition_distance)
+        val offset =
+            context.resources.getDimensionPixelSize(
+                R.dimen.lockscreen_shade_keyguard_transition_vertical_offset)
+        val expectedTranslation = 10f / distance * offset
+        verify(notificationPanelController)
+            .setKeyguardTransitionProgress(anyFloat(), eq(expectedTranslation.toInt()))
     }
 
     @Test