Add xlarge keyboard layouts (tentative)

This keyboard layout is tentative for UX study.

This change added xlarge keyboard layouts only for "regular text",
"symbol/number mode" and "symbol/number mode shifted".

TODO other text mode variants should have dedicated layout.

Change-Id: I36077efcec4b57c3b5cada0a851e1409a289eeb9
diff --git a/java/res/xml-xlarge/kbd_symbols.xml b/java/res/xml-xlarge/kbd_symbols.xml
new file mode 100644
index 0000000..9ac7716
--- /dev/null
+++ b/java/res/xml-xlarge/kbd_symbols.xml
@@ -0,0 +1,160 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2010, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+
+<Keyboard
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:keyWidth="7.5%p"
+    android:horizontalGap="0px"
+    android:verticalGap="0px"
+    android:keyHeight="@dimen/key_height"
+>
+    <Row
+        android:rowEdgeFlags="top"
+    >
+        <Key
+            android:codes="@integer/key_tab"
+            android:keyLabel="Tab"
+            android:keyEdgeFlags="left" />
+        <Key
+            android:keyLabel="1" />
+        <Key
+            android:keyLabel="2" />
+        <Key
+            android:keyLabel="3" />
+        <Key
+            android:keyLabel="4" />
+        <Key
+            android:keyLabel="5" />
+        <Key
+            android:keyLabel="6" />
+        <Key
+            android:keyLabel="7" />
+        <Key
+            android:keyLabel="8" />
+        <Key
+            android:keyLabel="9" />
+        <Key
+            android:keyLabel="0" />
+        <Key
+            android:keyLabel="~" />
+        <Key
+            android:codes="@integer/key_delete"
+            android:keyIcon="@drawable/sym_keyboard_delete"
+            android:iconPreview="@drawable/sym_keyboard_feedback_delete"
+            android:keyWidth="10.5%p"
+            android:isModifier="true"
+            android:isRepeatable="true"
+            android:keyEdgeFlags="right" />
+    </Row>
+    <Row>
+        <Key
+            android:codes="@integer/key_symbol"
+            android:keyLabel="@string/label_symbol_key"
+            android:keyWidth="8.75%p"
+            android:isModifier="true"
+            android:keyEdgeFlags="left" />
+        <Key
+            android:keyLabel="\@" />
+        <Key
+            android:keyLabel="#" />
+        <Key
+            android:keyLabel="$" />
+        <Key
+            android:keyLabel="%" />
+        <Key
+            android:keyLabel="^" />
+        <Key
+            android:keyLabel="&amp;" />
+        <Key
+            android:keyLabel="*" />
+        <Key
+            android:keyLabel="-" />
+        <Key
+            android:keyLabel="+" />
+        <Key
+            android:keyLabel="(" />
+        <Key
+            android:keyLabel=")" />
+        <Key
+            android:codes="@integer/key_return"
+            android:keyIcon="@drawable/sym_keyboard_return"
+            android:iconPreview="@drawable/sym_keyboard_feedback_return"
+            android:keyWidth="8.75%p"
+            android:isModifier="true"
+            android:keyEdgeFlags="right" />
+    </Row>
+    <Row>
+        <Key
+            android:codes="@integer/key_shift"
+            android:keyIcon="@drawable/sym_keyboard_shift"
+            android:iconPreview="@drawable/sym_keyboard_feedback_shift"
+            android:keyWidth="12.5%p"
+            android:isModifier="true"
+            android:isSticky="true"
+            android:keyEdgeFlags="left" />
+        <Key
+            android:keyLabel="!" />
+        <Key
+            android:keyLabel="&quot;" />
+        <Key
+            android:keyLabel="\'" />
+        <Key
+            android:keyLabel=":" />
+        <Key
+            android:keyLabel=";" />
+        <Key
+            android:keyLabel="/" />
+        <Key
+            android:keyLabel="\\" />
+        <Key
+            android:keyLabel="," />
+        <Key
+            android:keyLabel="." />
+        <Key
+            android:keyLabel="\?" />
+        <Key
+            android:codes="@integer/key_shift"
+            android:keyIcon="@drawable/sym_keyboard_shift"
+            android:iconPreview="@drawable/sym_keyboard_feedback_shift"
+            android:keyWidth="12.5%p"
+            android:isModifier="true"
+            android:isSticky="true"
+            android:keyEdgeFlags="left" />
+    </Row>
+    <Row
+        android:rowEdgeFlags="bottom"
+    >
+        <Key
+            android:keyLabel="&lt;"
+            android:horizontalGap="16.25%p" />
+        <Key
+            android:keyLabel="&gt;" />
+        <Key
+            android:codes="@integer/key_space"
+            android:keyIcon="@drawable/sym_keyboard_space"
+            android:iconPreview="@drawable/sym_keyboard_feedback_space"
+            android:keyWidth="37.5%p"
+            android:isModifier="true" />
+        <Key
+            android:keyLabel="[" />
+        <Key
+            android:keyLabel="]" />
+    </Row>
+</Keyboard>