Improve app resizing on Chromebooks

Change-Id: I58de7133e0eb76d13353ed152c38137bbdb31a3d

appinventor/buildserver/src/com/google/appinventor/buildserver/Compiler.java

 // -*- mode: java; c-basic-offset: 2; -*-
 // Copyright 2009-2011 Google, All Rights reserved
-// Copyright 2011-2019 MIT, All rights reserved
+// Copyright 2011-2020 MIT, All rights reserved
 // Released under the Apache License, Version 2.0
 // http://www.apache.org/licenses/LICENSE-2.0
 
@@ -984,7 +984,8 @@ public final class Compiler {
 
         // The keyboard option prevents the app from stopping when a external (bluetooth)
         // keyboard is attached.
-        out.write("android:configChanges=\"orientation|screenSize|keyboardHidden|keyboard\">\n");
+        out.write("android:configChanges=\"orientation|screenSize|keyboardHidden|keyboard|"
+            + "screenLayout|smallestScreenSize\">\n");
 
         out.write("      <intent-filter>\n");
         out.write("        <action android:name=\"android.intent.action.MAIN\" />\n");

appinventor/components/src/com/google/appinventor/components/runtime/util/ScreenDensityUtil.java

 // -*- mode: java; c-basic-offset: 2; -*-
 // Copyright 2009-2015 Google, All Rights reserved
-// Copyright 2011-2015 MIT, All rights reserved
+// Copyright 2011-2020 MIT, All rights reserved
 // Released under the Apache License, Version 2.0
 // http://www.apache.org/licenses/LICENSE-2.0
 
@@ -13,7 +13,6 @@ import android.util.Log;
 import android.view.Display;
 import android.view.WindowManager;
 
-import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
@@ -75,12 +74,8 @@ public final class ScreenDensityUtil {
 
     float sw = width/(float)newWidth;
     float sh = height/(float)newHeight;
-    float scale = sw < sh ? sw : sh;
-    if (scale < 1) {
-      scale = 1;
-    }
 
-    return scale;
+    return Math.max(1, Math.min(Math.min(sw, sh), MAXIMUM_ASPECT_RATIO));
   }
 
   /**
@@ -90,14 +85,19 @@ public final class ScreenDensityUtil {
    * @param context context to get screen size of.
    * @param outSize Set to the real size of the display.
    */
-  public static void getRawScreenDim(Context context, Point outSize) {
+  private static void getRawScreenDim(Context context, Point outSize) {
 
     final DisplayMetrics metrics = new DisplayMetrics();
     final WindowManager wm = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
     Display display = wm.getDefaultDisplay();
 
     int sdkLevel = SdkLevel.getLevel();
-    if (sdkLevel >= SdkLevel.LEVEL_JELLYBEAN_MR1) {
+    if (sdkLevel >= SdkLevel.LEVEL_NOUGAT) {
+      // Needed for multi-window support
+      display.getMetrics(metrics);
+      outSize.x = metrics.widthPixels;
+      outSize.y = metrics.heightPixels;
+    } else if (sdkLevel >= SdkLevel.LEVEL_JELLYBEAN_MR1) {
       // On API level 17, a public method was added to get the actual sizes
       JellybeanUtil.getRealSize(display, outSize);
     } else if ( sdkLevel > SdkLevel.LEVEL_GINGERBREAD_MR1){

appinventor/components/src/com/google/appinventor/components/runtime/util/SdkLevel.java

 // -*- mode: java; c-basic-offset: 2; -*-
 // Copyright 2009-2011 Google, All Rights reserved
-// Copyright 2011-2012 MIT, All rights reserved
+// Copyright 2011-2020 MIT, All rights reserved
 // Released under the Apache License, Version 2.0
 // http://www.apache.org/licenses/LICENSE-2.0
 
@@ -34,6 +34,7 @@ public class SdkLevel {
   public static final int LEVEL_KITKAT = 19;              // a.k.a. 4.4
   public static final int LEVEL_LOLLIPOP = 21;            // a.k.a. 5.0
   public static final int LEVEL_MARSHMALLOW = 23;         // a.k.a. 6.0
+  public static final int LEVEL_NOUGAT = 24;              // a.k.a. 7.0
 
   private SdkLevel() {
   }