Hide App Chip for smaller app in 90:10 flex split

Bug: 384110883
Test: Tested with both halves made smaller,
large screen and small (phone has other existing bugs).
Lanscape and portrait.
Flag: com.android.wm.shell.enable_flexible_two_app_split

Change-Id: Ib6508c7b3192cc47fc8406cdf68c826bed29de5f

quickstep/src/com/android/quickstep/views/GroupedTaskView.kt

@@ -38,6 +38,7 @@ import com.android.quickstep.util.RecentsOrientedState
 import com.android.quickstep.util.SplitSelectStateController
 import com.android.systemui.shared.recents.model.Task
 import com.android.systemui.shared.system.InteractionJankMonitorWrapper
+import com.android.wm.shell.Flags.enableFlexibleTwoAppSplit
 import com.android.wm.shell.shared.split.SplitScreenConstants.PersistentSnapPosition
 
 /**
@@ -52,6 +53,9 @@ import com.android.wm.shell.shared.split.SplitScreenConstants.PersistentSnapPosi
  */
 class GroupedTaskView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
     TaskView(context, attrs, type = TaskViewType.GROUPED) {
+
+    private val MINIMUM_RATIO_TO_SHOW_ICON = 0.2f
+
     // TODO(b/336612373): Support new TTV for GroupedTaskView
     var splitBoundsConfig: SplitConfigurationOptions.SplitBounds? = null
         private set
@@ -176,14 +180,32 @@ class GroupedTaskView @JvmOverloads constructor(context: Context, attrs: Attribu
 
     private fun updateIconPlacement() {
         val splitBoundsConfig = splitBoundsConfig ?: return
-        val taskIconHeight = container.deviceProfile.overviewTaskIconSizePx
+        val deviceProfile = container.deviceProfile
+        val taskIconHeight = deviceProfile.overviewTaskIconSizePx
         val isRtl = layoutDirection == LAYOUT_DIRECTION_RTL
         val inSplitSelection = getThisTaskCurrentlyInSplitSelection() != INVALID_TASK_ID
 
+        if (enableFlexibleTwoAppSplit()) {
+            val topLeftTaskPercent =
+                if (deviceProfile.isLeftRightSplit) splitBoundsConfig.leftTaskPercent
+                else splitBoundsConfig.topTaskPercent
+            val bottomRightTaskPercent = 1 - topLeftTaskPercent
+            taskContainers[0]
+                .iconView
+                .setFlexSplitAlpha(
+                    if (topLeftTaskPercent < MINIMUM_RATIO_TO_SHOW_ICON) 0f else 1f
+                )
+            taskContainers[1]
+                .iconView
+                .setFlexSplitAlpha(
+                    if (bottomRightTaskPercent < MINIMUM_RATIO_TO_SHOW_ICON) 0f else 1f
+                )
+        }
+
         if (enableOverviewIconMenu()) {
             val groupedTaskViewSizes =
                 pagedOrientationHandler.getGroupedTaskViewSizes(
-                    container.deviceProfile,
+                    deviceProfile,
                     splitBoundsConfig,
                     layoutParams.width,
                     layoutParams.height,
@@ -197,7 +219,7 @@ class GroupedTaskView @JvmOverloads constructor(context: Context, attrs: Attribu
                 layoutParams.height,
                 layoutParams.width,
                 isRtl,
-                container.deviceProfile,
+                deviceProfile,
                 splitBoundsConfig,
                 inSplitSelection,
             )
@@ -211,7 +233,7 @@ class GroupedTaskView @JvmOverloads constructor(context: Context, attrs: Attribu
                 measuredHeight,
                 measuredWidth,
                 isRtl,
-                container.deviceProfile,
+                deviceProfile,
                 splitBoundsConfig,
                 inSplitSelection,
             )

quickstep/src/com/android/quickstep/views/IconAppChipView.java

@@ -56,10 +56,12 @@ public class IconAppChipView extends FrameLayout implements TaskViewIcon {
     private static final int MENU_BACKGROUND_REVEAL_DURATION = 417;
     private static final int MENU_BACKGROUND_HIDE_DURATION = 333;
 
-    private static final int NUM_ALPHA_CHANNELS = 3;
+    private static final int NUM_ALPHA_CHANNELS = 4;
     private static final int INDEX_CONTENT_ALPHA = 0;
     private static final int INDEX_COLOR_FILTER_ALPHA = 1;
     private static final int INDEX_MODAL_ALPHA = 2;
+    /** Used to hide the app chip for 90:10 flex split. */
+    private static final int INDEX_MINIMUM_RATIO_ALPHA = 3;
 
     private final MultiValueAlpha mMultiValueAlpha;
 
@@ -348,6 +350,11 @@ public class IconAppChipView extends FrameLayout implements TaskViewIcon {
         mMultiValueAlpha.get(INDEX_MODAL_ALPHA).setValue(alpha);
     }
 
+    @Override
+    public void setFlexSplitAlpha(float alpha) {
+        mMultiValueAlpha.get(INDEX_MINIMUM_RATIO_ALPHA).setValue(alpha);
+    }
+
     @Override
     public int getDrawableWidth() {
         return mIconView == null ? 0 : mIconView.getDrawableWidth();

quickstep/src/com/android/quickstep/views/IconView.kt

@@ -133,6 +133,10 @@ class IconView : View, TaskViewIcon {
         multiValueAlpha[INDEX_MODAL_ALPHA].setValue(alpha)
     }
 
+    override fun setFlexSplitAlpha(alpha: Float) {
+        multiValueAlpha[INDEX_FLEX_SPLIT_ALPHA].setValue(alpha)
+    }
+
     /**
      * Set the tint color of the icon, useful for scrimming or dimming.
      *
@@ -178,8 +182,9 @@ class IconView : View, TaskViewIcon {
     }
 
     companion object {
-        private const val NUM_ALPHA_CHANNELS = 2
+        private const val NUM_ALPHA_CHANNELS = 3
         private const val INDEX_CONTENT_ALPHA = 0
         private const val INDEX_MODAL_ALPHA = 1
+        private const val INDEX_FLEX_SPLIT_ALPHA = 2
     }
 }

quickstep/src/com/android/quickstep/views/TaskViewIcon.java

@@ -47,6 +47,11 @@ public interface TaskViewIcon {
      */
     void setModalAlpha(float alpha);
 
+    /**
+     * Sets the opacity of the view for flex split state.
+     */
+    void setFlexSplitAlpha(float alpha);
+
     /**
      * Returns this icon view's drawable.
      */