Add framework flag to allow enable/disable resize.

Some OEMs may not want the PIP window to resize on touch; this is true
for those that ship only large-screen form factor devices, so the PIP
window is already big enough for the controls (e.g. ChromeOS).

Bug: 148083488
Test: Build, touch - PIP does not resize.
Change-Id: I997c3f428981aafda4b6cffece355ba0cfdac4e6
diff --git a/packages/SystemUI/res/values/config.xml b/packages/SystemUI/res/values/config.xml
index 8de2df5..a49aedf 100644
--- a/packages/SystemUI/res/values/config.xml
+++ b/packages/SystemUI/res/values/config.xml
@@ -464,6 +464,9 @@
     <!-- Allow dragging the PIP to a location to close it -->
     <bool name="config_pipEnableDismissDragToEdge">true</bool>
 
+    <!-- Alow PIP to resize to a slightly bigger state upon touch/showing the menu -->
+    <bool name="config_pipEnableResizeForMenu">true</bool>
+
     <!-- SystemUI Plugins that can be loaded on user builds. -->
     <string-array name="config_pluginWhitelist" translatable="false">
         <item>com.android.systemui</item>
diff --git a/packages/SystemUI/src/com/android/systemui/pip/phone/PipTouchHandler.java b/packages/SystemUI/src/com/android/systemui/pip/phone/PipTouchHandler.java
index 79a25b2..3b855db 100644
--- a/packages/SystemUI/src/com/android/systemui/pip/phone/PipTouchHandler.java
+++ b/packages/SystemUI/src/com/android/systemui/pip/phone/PipTouchHandler.java
@@ -67,6 +67,8 @@
 
     // Allow dragging the PIP to a location to close it
     private final boolean mEnableDismissDragToEdge;
+    // Allow PIP to resize to a slightly bigger state upon touch
+    private final boolean mEnableResize;
     private final Context mContext;
     private final IActivityManager mActivityManager;
     private final PipBoundsHandler mPipBoundsHandler;
@@ -188,6 +190,7 @@
         mImeOffset = res.getDimensionPixelSize(R.dimen.pip_ime_offset);
 
         mEnableDismissDragToEdge = res.getBoolean(R.bool.config_pipEnableDismissDragToEdge);
+        mEnableResize = res.getBoolean(R.bool.config_pipEnableResizeForMenu);
 
         // Register the listener for input consumer touch events
         inputConsumerController.setInputListener(this::handleTouchEvent);
@@ -297,7 +300,7 @@
             } else {
                 final float offsetBufferPx = BOTTOM_OFFSET_BUFFER_DP
                         * mContext.getResources().getDisplayMetrics().density;
-                final Rect toMovementBounds = mMenuState == MENU_STATE_FULL
+                final Rect toMovementBounds = mMenuState == MENU_STATE_FULL && willResizeMenu()
                         ? new Rect(expandedMovementBounds)
                         : new Rect(normalMovementBounds);
                 final int prevBottom = mMovementBounds.bottom - mMovementBoundsExtraOffsets;
@@ -691,11 +694,12 @@
     };
 
     /**
-     * Updates the current movement bounds based on whether the menu is currently visible.
+     * Updates the current movement bounds based on whether the menu is currently visible and
+     * resized.
      */
     private void updateMovementBounds(int menuState) {
         boolean isMenuExpanded = menuState == MENU_STATE_FULL;
-        mMovementBounds = isMenuExpanded
+        mMovementBounds = isMenuExpanded && willResizeMenu()
                 ? mExpandedMovementBounds
                 : mNormalMovementBounds;
         mPipBoundsHandler.setMinEdgeSize(
@@ -715,8 +719,11 @@
      * @return whether the menu will resize as a part of showing the full menu.
      */
     private boolean willResizeMenu() {
-        return mExpandedBounds.width() != mNormalBounds.width() ||
-                mExpandedBounds.height() != mNormalBounds.height();
+        if (!mEnableResize) {
+            return false;
+        }
+        return mExpandedBounds.width() != mNormalBounds.width()
+                || mExpandedBounds.height() != mNormalBounds.height();
     }
 
     public void dump(PrintWriter pw, String prefix) {