1 files changed, 59 insertions, 0 deletions
diff --git a/mobile/android/geckoview/src/main/java/org/mozilla/gecko/util/WindowUtils.java b/mobile/android/geckoview/src/main/java/org/mozilla/gecko/util/WindowUtils.java
new file mode 100644
index 000000000..5298f846a
--- /dev/null
+++ b/mobile/android/geckoview/src/main/java/org/mozilla/gecko/util/WindowUtils.java
@@ -0,0 +1,59 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko.util;
+
+import org.mozilla.gecko.AppConstants.Versions;
+
+import android.content.Context;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.view.Display;
+import android.view.WindowManager;
+
+import java.lang.reflect.Method;
+
+public class WindowUtils {
+    private static final String LOGTAG = "Gecko" + WindowUtils.class.getSimpleName();
+
+    private WindowUtils() { /* To prevent instantiation */ }
+
+    /**
+     * Returns the best-guess physical device dimensions, including the system status bars. Note
+     * that DisplayMetrics.height/widthPixels does not include the system bars.
+     *
+     * via http://stackoverflow.com/a/23861333
+     *
+     * @param context the calling Activity's Context
+     * @return The number of pixels of the device's largest dimension, ignoring software status bars
+     */
+    public static int getLargestDimension(final Context context) {
+        final Display display = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
+
+        if (Versions.feature17Plus) {
+            final DisplayMetrics realMetrics = new DisplayMetrics();
+            display.getRealMetrics(realMetrics);
+            return Math.max(realMetrics.widthPixels, realMetrics.heightPixels);
+
+        } else {
+            int tempWidth;
+            int tempHeight;
+            try {
+                final Method getRawH = Display.class.getMethod("getRawHeight");
+                final Method getRawW = Display.class.getMethod("getRawWidth");
+                tempWidth = (Integer) getRawW.invoke(display);
+                tempHeight = (Integer) getRawH.invoke(display);
+            } catch (Exception e) {
+                // This is the best we can do.
+                tempWidth = display.getWidth();
+                tempHeight = display.getHeight();
+                Log.w(LOGTAG, "Couldn't use reflection to get the real display metrics.");
+            }
+
+            return Math.max(tempWidth, tempHeight);
+
+        }
+    }
+}