adding the initial version of an own implementation of MyKeyboardView

app/src/main/kotlin/com/simplemobiletools/keyboard/services/SimpleKeyboardIME.kt

@@ -2,24 +2,24 @@ package com.simplemobiletools.keyboard.services
 
 import android.inputmethodservice.InputMethodService
 import android.inputmethodservice.Keyboard
-import android.inputmethodservice.KeyboardView
 import android.text.TextUtils
 import android.view.KeyEvent
 import android.view.View
 import com.simplemobiletools.commons.extensions.performHapticFeedback
 import com.simplemobiletools.keyboard.R
+import com.simplemobiletools.keyboard.views.MyKeyboardView
 
 // based on https://www.androidauthority.com/lets-build-custom-keyboard-android-832362/
-class SimpleKeyboardIME : InputMethodService(), KeyboardView.OnKeyboardActionListener {
+class SimpleKeyboardIME : InputMethodService(), MyKeyboardView.OnKeyboardActionListener {
     private var keyboard: Keyboard? = null
-    private var keyboardView: KeyboardView? = null
+    private var keyboardView: MyKeyboardView? = null
     private var caps = false
 
     override fun onCreateInputView(): View {
-        keyboardView = layoutInflater.inflate(R.layout.keyboard_view, null) as KeyboardView
+        keyboardView = layoutInflater.inflate(R.layout.keyboard_view_keyboard, null) as MyKeyboardView
         keyboard = Keyboard(this, R.xml.keys_layout)
         keyboardView!!.keyboard = keyboard
-        keyboardView!!.setOnKeyboardActionListener(this)
+        keyboardView!!.onKeyboardActionListener = this
         return keyboardView!!
     }
 

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

@@ -0,0 +1,28 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal">
+
+    <com.simplemobiletools.keyboard.views.MyKeyboardView
+        android:id="@+id/keyboardView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true"
+        android:background="@android:color/transparent"
+        android:keyPreviewLayout="@layout/keyboard_key_preview"
+        android:keyTextSize="22sp"
+        android:popupLayout="@layout/keyboard_popup_keyboard"
+        tools:ignore="ResourceCycle" />
+
+    <ImageButton
+        android:id="@+id/closeButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:layout_marginStart="8dp"
+        android:background="@android:color/transparent"
+        android:clickable="true"
+        android:src="@drawable/ic_cross_vector" />
+
+</LinearLayout>

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

@@ -1,7 +1,7 @@
-<android.inputmethodservice.KeyboardView xmlns:android="http://schemas.android.com/apk/res/android"
+<com.simplemobiletools.keyboard.views.MyKeyboardView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/keyboard_view"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:layout_alignParentBottom="true"
     android:background="@color/default_background_color"
-    android:keyPreviewLayout="@layout/keyboard_preview" />
+    android:keyPreviewLayout="@layout/keyboard_key_preview" />

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

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <declare-styleable name="KeyboardViewPreviewState">
+        <attr name="state_long_pressable" format="boolean" />
+    </declare-styleable>
+</resources>

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

@@ -3,4 +3,20 @@
     <string name="app_launcher_name">Keyboard</string>
     <string name="redirection_note">Please enable Simple Keyboard on the next screen, to make it an available keyboard. Press \'Back\' once enabled.</string>
     <string name="change_keyboard">Change Keyboard</string>
+
+    <!-- KeyboardView - accessibility support -->
+    <!-- Description of the Alt button in a KeyboardView. [CHAR LIMIT=NONE] -->
+    <string name="keyboardview_keycode_alt">Alt</string>
+    <!-- Description of the Cancel button in a KeyboardView. [CHAR LIMIT=NONE] -->
+    <string name="keyboardview_keycode_cancel">Cancel</string>
+    <!-- Description of the Delete button in a KeyboardView. [CHAR LIMIT=NONE] -->
+    <string name="keyboardview_keycode_delete">Delete</string>
+    <!-- Description of the Done button in a KeyboardView. [CHAR LIMIT=NONE] -->
+    <string name="keyboardview_keycode_done">Done</string>
+    <!-- Description of the Mode change button in a KeyboardView. [CHAR LIMIT=NONE] -->
+    <string name="keyboardview_keycode_mode_change">Mode change</string>
+    <!-- Description of the Shift button in a KeyboardView. [CHAR LIMIT=NONE] -->
+    <string name="keyboardview_keycode_shift">Shift</string>
+    <!-- Description of the Enter button in a KeyboardView. [CHAR LIMIT=NONE] -->
+    <string name="keyboardview_keycode_enter">Enter</string>
 </resources>

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

@@ -2,4 +2,34 @@
 
     <style name="AppTheme" parent="AppTheme.Base" />
 
+    <declare-styleable name="KeyboardView">
+        <attr name="keyboardViewStyle" format="reference" />
+        <!-- Image for the key. This image needs to be a StateListDrawable, with the following
+             possible states: normal, pressed, checkable, checkable+pressed, checkable+checked,
+             checkable+checked+pressed. -->
+        <attr name="keyBackground" format="reference" />
+        <!-- Size of the text for character keys. -->
+        <attr name="keyTextSize" format="dimension" />
+        <!-- Size of the text for custom keys with some text and no icon. -->
+        <attr name="labelTextSize" format="dimension" />
+        <!-- Color to use for the label in a key. -->
+        <attr name="keyTextColor" format="color" />
+        <!-- Layout resource for key press feedback. -->
+        <attr name="keyPreviewLayout" format="reference" />
+        <!-- Vertical offset of the key press feedback from the key. -->
+        <attr name="keyPreviewOffset" format="dimension" />
+        <!-- Height of the key press feedback popup. -->
+        <attr name="keyPreviewHeight" format="dimension" />
+        <!-- Amount to offset the touch Y coordinate by, for bias correction. -->
+        <attr name="verticalCorrection" format="dimension" />
+        <!-- Layout resource for popup keyboards. -->
+        <attr name="popupLayout" format="reference" />
+        <attr name="shadowColor" format="color" />
+        <!-- Horizontal offset of the text shadow. -->
+        <attr name="shadowDx" format="dimension" />
+        <!-- Vertical offset of the text shadow. -->
+        <attr name="shadowDy" format="dimension" />
+        <!-- Blur radius of the text shadow. -->
+        <attr name="shadowRadius" format="dimension" />
+    </declare-styleable>
 </resources>