Fix bug with app pairs appearing in wrong orientation in pinned Taskbar

This CL makes it so that app pairs do an orientation check in dispatchDraw() instead of only on init().

Previously we only checked orientation on AppPairIcon.inflateIcon(), and the issue was that orientation was not re-checked when pinned Taskbar was rotated to different sides of the screen. Added a DeviceProfileListener to update orientation when DP changes.

Fixes: 323288812
Flag: ACONFIG com.android.wm.shell.enable_app_pairs TRUNKFOOD
Test: Manual, app pair icon always has correct otientation on pinned taskbar
Change-Id: If2de1a4c7334fef1ba4c2edcca09bef9338bc73f
Merged-In: If2de1a4c7334fef1ba4c2edcca09bef9338bc73f
(cherry picked from commit 999ab5215a)

src/com/android/launcher3/apppairs/AppPairIcon.java

@@ -103,7 +103,7 @@ public class AppPairIcon extends FrameLayout implements DraggableView, Reorderab
 
         // Set up icon drawable area
         icon.mIconGraphic = icon.findViewById(R.id.app_pair_icon_graphic);
-        icon.mIconGraphic.init(activity.getDeviceProfile(), icon);
+        icon.mIconGraphic.init(activity, icon);
 
         // Set up app pair title
         icon.mAppPairName = icon.findViewById(R.id.app_pair_icon_name);

src/com/android/launcher3/apppairs/AppPairIconGraphic.kt

@@ -25,17 +25,19 @@ import android.util.Log
 import android.view.Gravity
 import android.widget.FrameLayout
 import com.android.launcher3.DeviceProfile
+import com.android.launcher3.DeviceProfile.OnDeviceProfileChangeListener
 import com.android.launcher3.icons.BitmapInfo
 import com.android.launcher3.icons.PlaceHolderIconDrawable
 import com.android.launcher3.model.data.WorkspaceItemInfo
 import com.android.launcher3.util.Themes
+import com.android.launcher3.views.ActivityContext
 
 /**
  * A FrameLayout marking the area on an [AppPairIcon] where the visual icon will be drawn. One of
  * two child UI elements on an [AppPairIcon], along with a BubbleTextView holding the text title.
  */
 class AppPairIconGraphic @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
-    FrameLayout(context, attrs) {
+    FrameLayout(context, attrs), OnDeviceProfileChangeListener {
     private val TAG = "AppPairIconGraphic"
 
     companion object {
@@ -69,14 +71,17 @@ class AppPairIconGraphic @JvmOverloads constructor(context: Context, attrs: Attr
     // The app pairs icon appears differently in portrait and landscape.
     var isLeftRightSplit = false
 
+    private lateinit var activityContext: ActivityContext
     private lateinit var parentIcon: AppPairIcon
     private lateinit var appPairBackground: Drawable
     private var appIcon1: Drawable? = null
     private var appIcon2: Drawable? = null
 
-    fun init(grid: DeviceProfile, icon: AppPairIcon) {
+    fun init(activity: ActivityContext, icon: AppPairIcon) {
+        activityContext = activity
+
         // Calculate device-specific measurements
-        val defaultIconSize = grid.iconSizePx
+        val defaultIconSize = activity.deviceProfile.iconSizePx
         outerPadding = OUTER_PADDING_SCALE * defaultIconSize
         innerPadding = INNER_PADDING_SCALE * defaultIconSize
         backgroundSize = defaultIconSize - outerPadding * 2
@@ -84,8 +89,8 @@ class AppPairIconGraphic @JvmOverloads constructor(context: Context, attrs: Attr
         centerChannelSize = CENTER_CHANNEL_SCALE * defaultIconSize
         bigRadius = BIG_RADIUS_SCALE * defaultIconSize
         smallRadius = SMALL_RADIUS_SCALE * defaultIconSize
-        isLeftRightSplit = grid.isLeftRightSplit
         parentIcon = icon
+        updateOrientation()
 
         appPairBackground = AppPairIconBackground(context, this)
         appPairBackground.setBounds(0, 0, backgroundSize.toInt(), backgroundSize.toInt())
@@ -100,6 +105,28 @@ class AppPairIconGraphic @JvmOverloads constructor(context: Context, attrs: Attr
         layoutParams = lp
     }
 
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+        activityContext.addOnDeviceProfileChangeListener(this)
+    }
+
+    override fun onDetachedFromWindow() {
+        super.onDetachedFromWindow()
+        activityContext.removeOnDeviceProfileChangeListener(this)
+    }
+
+    /** Checks the device orientation and updates isLeftRightSplit accordingly. */
+    private fun updateOrientation() {
+        val activity: ActivityContext = ActivityContext.lookupContext(context)
+        isLeftRightSplit = activity.deviceProfile.isLeftRightSplit
+    }
+
+    /** When device profile changes, update orientation */
+    override fun onDeviceProfileChanged(dp: DeviceProfile?) {
+        updateOrientation()
+        invalidate()
+    }
+
     /** Sets up app pair member icons for drawing. */
     private fun applyIcons(contents: ArrayList<WorkspaceItemInfo>) {
         // App pair should always contain 2 members; if not 2, return to avoid a crash loop