Several changes. UI revamp, added a UX document explaining the choices, misc. bugfixes, double click to toggle meta key.

app/USER_EXPERIENCE.md

@@ -0,0 +1,98 @@
+# Titanboard user experience
+
+Keyboards are an integral part of the functioning of any computer, including the smartphone. Care
+should then be taken to design keyboards to be as intuitive, easy to use, and unobstructed as
+possible.
+
+The Unihertz Titan already has a physical keyboard. It's poorly designed in many aspects. Mainly, it
+isn't very reminiscent of a regular QWERTY keyboard which people are used to:
+
+1. The worst part is arguably the shift and alt keys being at the top of the keyboard, instead of on
+   the bottom.
+2. The spacebar key is on the same row as the bottom QWERTY alphabet keys.
+3. The numerical keys, which are some of the most commonly used keys in phones (passwords, PIN
+   codes)
+   and in regular language are right below the alt key, which makes typing them very awkward. One
+   could
+   also argue that the numpad is in a "reversed" layout, but this is consistent with the usual
+   layout
+   found on phones.
+4. It lacks some commonly used symbols: ';', '&', '=', '<', '>', '$'. Other than that, it lacks some
+   other
+   symbols from regular QWERTY keyboards.
+5. There is no extra alt-gr key to type in localized letters.
+6. In my opinion, it also lacks a control key, but that is unnecessary on smartphones, unless you
+   use the terminal or modify spreadsheets. However, providing appropriate UI elements for the
+   actions
+   possible on regular computers should be the responsibility of the application. Smartphones are
+   simply different devices, with smaller screens and less space for complexity.
+7. Emojis.
+
+However, when designing a keyboard app for it one should already use all pre-existing quirks and
+decisions which materialized in the physical keyboard. For example, the alt key should be used for
+the alternate characters printed on the keyboard, the shift key should give us uppercase characters
+and so on.
+
+# Solutions
+
+Here are my solutions for the above listed problems:
+
+1. This is solvable with shift/alt latching. This makes it so when you press these keys once, the
+   next key pressed will be either uppercased or the alternate key visible on the physical button.
+   Additionally, the shift and alt key can be toggled by double-clicking in a fast succession,
+   similar
+   to regular visual keyboards on Android.
+2. This is unfortunately unsolvable with software.
+3. See 1., latching the keys solves this issue.
+4. This requires a visual keyboard, the UI of which is discussed later. Why does this require a
+   visual keyboard, and not some alternate "symbol" mode, perhaps accessible with some keyboard
+   shortcuts? That would make the learning curve of the keyboard higher, and it would be less
+   intuitive. One should make sure not to complicate the physical keyboard any more than it already
+   is,
+   and use all of its idiosyncrasies but add no more.
+5. Similar to regular visual keyboards on Android, a diacritic/alternate key is assigned to each key
+   according to the language. Long pressing a key will print it. Ideally, there should also be a
+   popup
+   menu allowing for several characters under one key. Cycling through the keys would use the
+   shift/alt
+   keys (so that no matter what key you use, the other hand can cycle through) and selecting it
+   would
+   happen on release of the key.
+6. I have no plans on adding a control key, as it is largely unnecessary on phones.
+7. I do not really use emojis, but I am aware that they are used by the majority of people. Most
+   IM apps provide their own emoji list, so this isn't a priority. Designing a good UX for it is
+   also
+   hard on the Titan.
+
+Taking into account typing ergonomics and pre-existing UX choices of other keyboard designers, this
+input method should make typing on the Unihertz Titan a pleasant experience. Other than fixing the
+fundamental issues, the keyboard should also:
+
+1. Provide a way of managing the clipboard, or at the very least pasting things with an UI element.
+   This is to make the usage intuitive and not introduce any additional keys such as a ctrl key.
+2. Autocorrect, language switching, auto caps and periods.
+3. Some minimal customization, but just enough not to overwhelm the user.
+
+For the Unihertz Titan Pocket/Slim, the sym key will be used as the alt+gr key, providing diacritics
+and such. This is because in the official documentation and implementation the alt key is designed
+for the alternate keys printed on the buttons.
+
+# User interface
+
+Google recommends that visual keyboards should not occupy more than half of the screen estate.
+However, most phones have long, vertical screens, which means essentially that the keyboard will
+be a square, and so will the remaining view. On the Titan, the screen is already square, so the
+remaining space will be proportionally much smaller. Therefore, the keyboard should occupy very
+minimal screen estate, as to allow the user to see the application they are interacting with.
+
+For this reason, I make sure the keyboard occupies 20–25 % screen estate. This is enough for a
+symbol bar and a suggestions bar, as well as some additional buttons such as language change or
+settings.
+
+Both the symbol bar and suggestions bar are scrollable. The suggestions being scrollable is a
+feature on some visual keyboards already, however, I have come to the decision to make this for the
+symbol bar as well. An expandable menu would make the keyboard occupy half, or more of the screen.
+A scrollable bar is more intuitive and can hold an indefinite amount of characters, possibly also
+user-defined.
+
+A simple divider between the suggestion and symbol bar is added to avoid accidental clicks.

app/build.gradle

@@ -11,7 +11,7 @@ android {
         minSdk 19
         targetSdk 34
         versionCode 1
-        versionName "1.0"
+        versionName "0.1"
     }
 
     buildTypes {
@@ -28,3 +28,4 @@ android {
 }
 
 
+

app/src/main/AndroidManifest.xml

@@ -3,26 +3,36 @@
     xmlns:tools="http://schemas.android.com/tools">
 
     <uses-permission android:name="android.permission.VIBRATE" />
+
     <application
         android:icon="@drawable/icon"
         android:label="@string/app_name"
         android:supportsRtl="true"
         tools:targetApi="31">
         <service
-            android:name="TitanboardIME"
+            android:name=".IME"
             android:directBootAware="true"
             android:exported="false"
             android:icon="@drawable/icon"
             android:label="@string/ime_label"
             android:permission="android.permission.BIND_INPUT_METHOD">
-
             <intent-filter>
                 <action android:name="android.view.InputMethod" />
             </intent-filter>
+
             <meta-data
                 android:name="android.view.im"
                 android:resource="@xml/method" />
         </service>
+
+        <activity
+            android:name=".PreferencesActivity"
+            android:exported="true"
+            android:label="@string/preferences_label">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+            </intent-filter>
+        </activity>
     </application>
 
 </manifest>

app/src/main/java/cfpi_fpsi/eu/titanboard/IME.java

@@ -1,19 +1,42 @@
+/*
+ * An input method for the Unihertz Titan/physical keyboard phones
+ * Copyright (C) 2024 Emil Kosz
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
 package cfpi_fpsi.eu.titanboard;
 
 import android.annotation.SuppressLint;
 import android.inputmethodservice.InputMethodService;
 import android.os.Build;
+import android.os.Vibrator;
 import android.view.KeyEvent;
 import android.view.View;
+import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputConnection;
 import android.widget.Button;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
-public class TitanboardIME extends InputMethodService {
-    private final MetaKeyManager mMetaKeyManager = new MetaKeyManager();
+public class IME extends InputMethodService {
+    private MetaKeyManager mMetaKeyManager;
     private Keymap mKeymap;
+
     private LinearLayout mInputView;
+    private Vibrator mVibrator;
 
     @Override
     public void onCreate() {
@@ -23,6 +46,8 @@ public class TitanboardIME extends InputMethodService {
         // Unihertz phones: the Pocket and the Slim. However, as I don't have them, it'll be guesswork.
         // Sym key support is already implemented.
         mKeymap = new Keymap(getResources().getXml(R.xml.keymap_titan));
+        mVibrator = (Vibrator) getBaseContext().getSystemService(VIBRATOR_SERVICE);
+        mMetaKeyManager = new MetaKeyManager(mVibrator);
     }
 
     @SuppressLint("InflateParams")
@@ -50,17 +75,20 @@ public class TitanboardIME extends InputMethodService {
         }
 
         switch (keyCode) {
-            // The back key behaviour is handled by the IMS already.
+            // If the keyboard is visible, hide it, otherwise, let the system handle the key.
+            case KeyEvent.KEYCODE_BACK:
+                if (isInputViewShown()) {
+                    requestHideSelf(0);
+                    return true;
+                }
+                return false;
             // If it's the Enter key, we let the application do it's job.
             case KeyEvent.KEYCODE_ENTER:
                 return false;
             // If it's the backspace key, we remove one character.
             case KeyEvent.KEYCODE_DEL:
+                conn.deleteSurroundingText(1, 0);
                 mMetaKeyManager.adjustMetaStateAfterKeypress();
-                if (conn.getSelectedText(0) == null) {
-                    conn.deleteSurroundingText(1, 0);
-                    return true;
-                }
                 return false;
             case KeyEvent.KEYCODE_SPACE:
                 conn.commitText(" ", 1);
@@ -68,18 +96,19 @@ public class TitanboardIME extends InputMethodService {
                 return true;
             default:
                 String key = getKey(keyCode);
-                if (key != null) {
-                    conn.commitText(getKey(keyCode), 1);
-                    mMetaKeyManager.adjustMetaStateAfterKeypress();
-                    return true;
-                } else {
+
+                if (key == null) {
                     return false;
                 }
+
+                conn.commitText(getKey(keyCode), 1);
+                mMetaKeyManager.adjustMetaStateAfterKeypress();
+                return true;
         }
     }
 
     public boolean onKeyUp(int keyCode, KeyEvent event) {
-        mMetaKeyManager.updateMetaStateUp(keyCode);
+        mMetaKeyManager.updateMetaStateUp(keyCode, event);
         updateMetaStateTextView();
         return false;
     }
@@ -93,9 +122,6 @@ public class TitanboardIME extends InputMethodService {
     public void onFinishInput() {
         mMetaKeyManager.resetMetaKeyState();
         updateMetaStateTextView();
-        mInputView.findViewById(R.id.extra_view).setVisibility(View.GONE);
-        Button key = mInputView.findViewById(R.id.expand_button);
-        key.setText("▲");
     }
 
     private String getKey(int keyCode) {
@@ -144,20 +170,9 @@ public class TitanboardIME extends InputMethodService {
         }
     }
 
-    /** @noinspection unused*/
-    public void onInputViewExtraKeyClick(View v) {
-        int visibility = mInputView.findViewById(R.id.extra_view).getVisibility();
-        Button key = (Button) v;
-        if (visibility == View.VISIBLE) {
-            mInputView.findViewById(R.id.extra_view).setVisibility(View.GONE);
-            key.setText("▲");
-        } else {
-            mInputView.findViewById(R.id.extra_view).setVisibility(View.VISIBLE);
-            key.setText("▼");
-        }
-    }
-
-    /** @noinspection unused*/
+    /**
+     * @noinspection unused
+     */
     public void onInputViewKeyClick(View v) {
         Button key = (Button) v;
         InputConnection conn = getCurrentInputConnection();

app/src/main/java/cfpi_fpsi/eu/titanboard/Keymap.java

@@ -1,3 +1,22 @@
+/*
+ * An input method for the Unihertz Titan/physical keyboard phones
+ * Copyright (C) 2024 Emil Kosz
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
 package cfpi_fpsi.eu.titanboard;
 
 import org.xmlpull.v1.XmlPullParser;

app/src/main/java/cfpi_fpsi/eu/titanboard/MetaKeyManager.java

@@ -1,62 +1,93 @@
+/*
+ * An input method for the Unihertz Titan/physical keyboard phones
+ * Copyright (C) 2024 Emil Kosz
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
 package cfpi_fpsi.eu.titanboard;
 
+import android.os.Vibrator;
 import android.view.KeyEvent;
 
 public class MetaKeyManager {
-    private static final int mRepeatCount = 5;
     private MetaKey mMetaKeyPressed = MetaKey.NONE;
     private MetaKey mMetaKeyLatched = MetaKey.NONE;
     private MetaKey mMetaKeyLocked = MetaKey.NONE;
     private boolean mMetaKeyUsed = false;
+    private long mKeyUpTime;
+
+    private Vibrator mVibrator;
+
+    public MetaKeyManager(Vibrator vibrator) {
+        mVibrator = vibrator;
+    }
 
     public void updateMetaStateDown(int keyCode, KeyEvent event) {
         switch (keyCode) {
             case KeyEvent.KEYCODE_ALT_LEFT:
             case KeyEvent.KEYCODE_ALT_RIGHT:
-                updateMetaKeyDown(MetaKey.ALT, event.getRepeatCount());
+                updateMetaKeyDown(MetaKey.ALT, event);
                 break;
             case KeyEvent.KEYCODE_SHIFT_LEFT:
             case KeyEvent.KEYCODE_SHIFT_RIGHT:
-                updateMetaKeyDown(MetaKey.SHIFT, event.getRepeatCount());
+                updateMetaKeyDown(MetaKey.SHIFT, event);
                 break;
             case KeyEvent.KEYCODE_SYM:
-                updateMetaKeyDown(MetaKey.SYM, event.getRepeatCount());
+                updateMetaKeyDown(MetaKey.SYM, event);
                 break;
             default:
                 break;
         }
     }
 
-    void updateMetaKeyDown(MetaKey key, int repeatCount) {
+    void updateMetaKeyDown(MetaKey key, KeyEvent event) {
         // Perhaps this function should be renamed to something...
         mMetaKeyUsed = false;
         mMetaKeyPressed = key;
         mMetaKeyLatched = mMetaKeyLocked != MetaKey.NONE ? mMetaKeyLocked : mMetaKeyLatched;
-        mMetaKeyLocked = repeatCount > mRepeatCount ? key : MetaKey.NONE;
+        mMetaKeyLocked = MetaKey.NONE;
     }
 
-    public void updateMetaStateUp(int keyCode) {
+    public void updateMetaStateUp(int keyCode, KeyEvent event) {
         switch (keyCode) {
             case KeyEvent.KEYCODE_ALT_LEFT:
             case KeyEvent.KEYCODE_ALT_RIGHT:
-                updateMetaKeyUp(MetaKey.ALT);
+                updateMetaKeyUp(MetaKey.ALT, event);
                 break;
             case KeyEvent.KEYCODE_SHIFT_LEFT:
             case KeyEvent.KEYCODE_SHIFT_RIGHT:
-                updateMetaKeyUp(MetaKey.SHIFT);
+                updateMetaKeyUp(MetaKey.SHIFT, event);
                 break;
             case KeyEvent.KEYCODE_SYM:
-                updateMetaKeyUp(MetaKey.SYM);
+                updateMetaKeyUp(MetaKey.SYM, event);
                 break;
             default:
                 break;
         }
     }
 
-    public void updateMetaKeyUp(MetaKey key) {
+    public void updateMetaKeyUp(MetaKey key, KeyEvent event) {
+        if (event.getEventTime() - mKeyUpTime < 400 && mMetaKeyLatched == key) {
+            mMetaKeyLocked = key;
+            mVibrator.vibrate(30);
+        }
+
+        mKeyUpTime = event.getEventTime();
         mMetaKeyPressed = MetaKey.NONE;
-        if (mMetaKeyLatched == MetaKey.NONE && mMetaKeyLocked == MetaKey.NONE
-                && !mMetaKeyUsed) {
+        if (mMetaKeyLatched == MetaKey.NONE && mMetaKeyLocked == MetaKey.NONE && !mMetaKeyUsed) {
             mMetaKeyLatched = key;
         } else {
             mMetaKeyLatched = MetaKey.NONE;
@@ -67,7 +98,9 @@ public class MetaKeyManager {
         if (mMetaKeyLatched != MetaKey.NONE) {
             mMetaKeyLatched = MetaKey.NONE;
             mMetaKeyUsed = false;
-        } else if (mMetaKeyPressed != MetaKey.NONE) {
+        }
+
+        if (mMetaKeyPressed != MetaKey.NONE) {
             mMetaKeyUsed = true;
         }
     }
@@ -79,6 +112,11 @@ public class MetaKeyManager {
         mMetaKeyUsed = false;
     }
 
+    public void setMetaKeyLatched(MetaKey key) {
+        resetMetaKeyState();
+        mMetaKeyLatched = key;
+    }
+
     public MetaKey getMetaKeyPressed() {
         return mMetaKeyPressed;
     }

app/src/main/java/cfpi_fpsi/eu/titanboard/PreferencesActivity.java

@@ -0,0 +1,31 @@
+/*
+ * An input method for the Unihertz Titan/physical keyboard phones
+ * Copyright (C) 2024 Emil Kosz
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+package cfpi_fpsi.eu.titanboard;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+public class PreferencesActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.preferences);
+    }
+}

app/src/main/res/drawable/key.xml

@@ -2,8 +2,10 @@
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:state_pressed="false">
         <shape>
-            <solid android:color="#333" />
-            <stroke android:width="1dp" android:color="#222" />
+            <gradient android:angle="-45"
+                android:startColor="#333"
+                android:endColor="#222"/>
+            <stroke android:width="1dp" android:color="#333" />
         </shape>
     </item>
     <item android:state_pressed="true">

app/src/main/res/layout/input.xml

@@ -14,264 +14,127 @@
         android:orientation="horizontal"
         android:visibility="visible">
 
-        <Button
-            android:id="@+id/suggestion_1"
-            style="@style/KeyboardCandidate"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1" />
-
-        <Button
-            android:id="@+id/suggestion_2"
-            style="@style/KeyboardCandidate"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1" />
-
-        <Button
-            android:id="@+id/suggestion_3"
-            style="@style/KeyboardCandidate"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1" />
-
         <TextView
             android:id="@+id/state"
             style="@style/KeyboardState"
-            android:layout_width="10dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
             android:text="aa"
             android:typeface="normal"
             tools:ignore="HardcodedText" />
 
-    </LinearLayout>
-
-    <LinearLayout
-        android:id="@+id/extra_view"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="vertical"
-        android:visibility="gone"
-        tools:visibility="visible">
-
-        <View
-            style="@style/KeyboardDivider"
-            android:layout_width="match_parent" />
-
-        <LinearLayout
+        <HorizontalScrollView
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:orientation="horizontal">
+            android:layout_weight="1">
 
-            <Button
-                style="@style/KeyboardKey"
+            <LinearLayout
                 android:layout_width="wrap_content"
                 android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="–"
-                tools:ignore="HardcodedText" />
+                android:orientation="horizontal" />
+        </HorizontalScrollView>
 
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="—"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="`"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="~"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="{"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="}"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="\\"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1" />
-
-        </LinearLayout>
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:orientation="horizontal">
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="π"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="≤"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="≥"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="^"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="["
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="]"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1"
-                android:text="|"
-                tools:ignore="HardcodedText" />
-
-            <Button
-                style="@style/KeyboardKey"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:layout_weight="1" />
-        </LinearLayout>
     </LinearLayout>
 
     <View
         style="@style/KeyboardDivider"
         android:layout_width="match_parent" />
 
-    <LinearLayout
+    <HorizontalScrollView
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="horizontal">
+        android:layout_height="match_parent">
 
-        <Button
-            style="@style/KeyboardKey"
+        <LinearLayout
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:text="&lt;"
-            tools:ignore="HardcodedText" />
+            android:orientation="horizontal">
 
-        <Button
-            style="@style/KeyboardKey"
-            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:text="&gt;"
-            tools:ignore="HardcodedText" />
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="&lt;" />
 
-        <Button
-            style="@style/KeyboardKey"
-            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:text="="
-            tools:ignore="HardcodedText" />
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="&gt;" />
 
-        <Button
-            style="@style/KeyboardKey"
-            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:text="$"
-            tools:ignore="HardcodedText" />
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="^" />
 
-        <Button
-            style="@style/KeyboardKey"
-            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:text="%"
-            tools:ignore="HardcodedText" />
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="~" />
 
-        <Button
-            style="@style/KeyboardKey"
-            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:text=";"
-            tools:ignore="HardcodedText" />
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="\\" />
 
-        <Button
-            style="@style/KeyboardKey"
-            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:text="&amp;"
-            tools:ignore="HardcodedText" />
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="=" />
 
-        <!--suppress AndroidMissingOnClickHandler -->
-        <Button
-            android:id="@+id/expand_button"
-            style="@style/KeyboardKey"
-            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:onClick="onInputViewExtraKeyClick"
-            android:text="▲ "
-            tools:ignore="HardcodedText,OnClick" />
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="&amp;" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text=";" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="|" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="[" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="]" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="{" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="}" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="←" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="↑" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="↓" />
+
+            <Button
+                style="@style/KeyboardKey"
+                android:layout_height="wrap_content"
+                android:text="→" />
+
+        </LinearLayout>
+    </HorizontalScrollView>
 
-    </LinearLayout>
 </LinearLayout>

app/src/main/res/layout/preferences.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <CheckBox
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Automatic capitalization" />
+
+    <CheckBox
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Automatic periods" />
+
+    <CheckBox
+        android:id="@+id/checkBox3"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Autocorrect" />
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Time between clicks to detect double click" />
+
+    <SeekBar
+        android:id="@+id/seekBar3"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+</LinearLayout>

app/src/main/res/values/strings.xml

@@ -1,4 +1,5 @@
 <resources>
     <string name="app_name">Titanboard</string>
     <string name="ime_label">Titanboard</string>
+    <string name="preferences_label">Preferences</string>
 </resources>

app/src/main/res/values/styles.xml

@@ -18,8 +18,7 @@
         <item name="android:textSize">18sp</item>
         <item name="android:textAlignment">center</item>
         <item name="android:typeface">monospace</item>
-        <item name="android:layout_weight">1</item>
-        <item name="android:width">0px</item>
+        <item name="android:layout_width">72dp</item>
     </style>
 
     <style name="KeyboardStateLocked" parent="KeyboardState">
@@ -31,8 +30,7 @@
         <item name="android:textColor">#FFF</item>
         <item name="android:textSize">18sp</item>
         <item name="android:layout_marginTop">2dp</item>
-        <item name="android:layout_weight">2.33</item>
-        <item name="android:width">0px</item>
+        <item name="android:layout_width">wrap_content</item>
     </style>
 
     <style name="KeyboardKey">
@@ -40,8 +38,8 @@
         <item name="android:textColor">#FFF</item>
         <item name="android:textSize">18sp</item>
         <item name="android:layout_marginTop">2dp</item>
-        <item name="android:layout_weight">1</item>
+        <item name="android:layout_marginBottom">2dp</item>
         <item name="android:onClick">onInputViewKeyClick</item>
-        <item name="android:width">0px</item>
+        <item name="android:layout_width">72dp</item>
     </style>
 </resources>

app/src/main/res/xml/keymap_titan.xml

@@ -3,7 +3,8 @@
     <key
         code="29"
         value="a"
-        valueAlt="@" />
+        valueAlt="@"
+        valueSym="ą" />
     <key
         code="30"
         value="b"
@@ -11,7 +12,8 @@
     <key
         code="31"
         value="c"
-        valueAlt="," />
+        valueAlt=","
+        valueSym="ć" />
     <key
         code="32"
         value="d"
@@ -19,7 +21,8 @@
     <key
         code="33"
         value="e"
-        valueAlt="_" />
+        valueAlt="_"
+        valueSym="ę" />
     <key
         code="34"
         value="f"
@@ -47,7 +50,8 @@
     <key
         code="40"
         value="l"
-        valueAlt="6" />
+        valueAlt="6"
+        valueSym="ł" />
     <key
         code="41"
         value="m"
@@ -55,11 +59,13 @@
     <key
         code="42"
         value="n"
-        valueAlt="8" />
+        valueAlt="8"
+        valueSym="ń" />
     <key
         code="43"
         value="o"
-        valueAlt="3" />
+        valueAlt="3"
+        valueSym="ó" />
     <key
         code="44"
         value="p"
@@ -75,7 +81,8 @@
     <key
         code="47"
         value="s"
-        valueAlt="&apos;" />
+        valueAlt="&apos;"
+        valueSym="ś" />
     <key
         code="48"
         value="t"
@@ -95,7 +102,8 @@
     <key
         code="52"
         value="x"
-        valueAlt="?" />
+        valueAlt="?"
+        valueSym="ź" />
     <key
         code="53"
         value="y"
@@ -103,5 +111,6 @@
     <key
         code="54"
         value="z"
-        valueAlt="!" />
+        valueAlt="!"
+        valueSym="ż" />
 </keymap>