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

489 lines
20 KiB
Kotlin

package com.simplemobiletools.keyboard.services
import android.annotation.SuppressLint
import android.content.SharedPreferences
import android.graphics.Bitmap
import android.graphics.drawable.Icon
import android.graphics.drawable.LayerDrawable
import android.graphics.drawable.RippleDrawable
import android.icu.text.BreakIterator
import android.icu.util.ULocale
import android.inputmethodservice.InputMethodService
import android.os.Build
import android.os.Bundle
import android.text.InputType.*
import android.text.TextUtils
import android.util.Size
import android.view.KeyEvent
import android.view.View
import android.view.ViewGroup
import android.view.inputmethod.*
import android.view.inputmethod.EditorInfo.IME_ACTION_NONE
import android.view.inputmethod.EditorInfo.IME_FLAG_NO_ENTER_ACTION
import android.view.inputmethod.EditorInfo.IME_MASK_ACTION
import android.widget.inline.InlinePresentationSpec
import androidx.annotation.RequiresApi
import androidx.autofill.inline.UiVersions
import androidx.autofill.inline.common.ImageViewStyle
import androidx.autofill.inline.common.TextViewStyle
import androidx.autofill.inline.common.ViewStyle
import androidx.autofill.inline.v1.InlineSuggestionUi
import androidx.core.graphics.drawable.toBitmap
import com.simplemobiletools.commons.extensions.*
import com.simplemobiletools.commons.helpers.isNougatPlus
import com.simplemobiletools.keyboard.R
import com.simplemobiletools.keyboard.databinding.KeyboardViewKeyboardBinding
import com.simplemobiletools.keyboard.extensions.config
import com.simplemobiletools.keyboard.extensions.getStrokeColor
import com.simplemobiletools.keyboard.extensions.safeStorageContext
import com.simplemobiletools.keyboard.helpers.*
import com.simplemobiletools.keyboard.interfaces.OnKeyboardActionListener
import com.simplemobiletools.keyboard.views.MyKeyboardView
import java.io.ByteArrayOutputStream
import java.util.Locale
// based on https://www.androidauthority.com/lets-build-custom-keyboard-android-832362/
class SimpleKeyboardIME : InputMethodService(), OnKeyboardActionListener, SharedPreferences.OnSharedPreferenceChangeListener {
private var SHIFT_PERM_TOGGLE_SPEED = 500 // how quickly do we have to doubletap shift to enable permanent caps lock
private val KEYBOARD_LETTERS = 0
private val KEYBOARD_SYMBOLS = 1
private val KEYBOARD_SYMBOLS_SHIFT = 2
private val KEYBOARD_NUMBERS = 3
private val KEYBOARD_PHONE = 4
private var keyboard: MyKeyboard? = null
private var keyboardView: MyKeyboardView? = null
private var lastShiftPressTS = 0L
private var keyboardMode = KEYBOARD_LETTERS
private var inputTypeClass = TYPE_CLASS_TEXT
private var inputTypeClassVariation = TYPE_CLASS_TEXT
private var enterKeyType = IME_ACTION_NONE
private var switchToLetters = false
private var breakIterator: BreakIterator? = null
private lateinit var binding: KeyboardViewKeyboardBinding
override fun onInitializeInterface() {
super.onInitializeInterface()
safeStorageContext.getSharedPrefs().registerOnSharedPreferenceChangeListener(this)
}
override fun onCreateInputView(): View {
binding = KeyboardViewKeyboardBinding.inflate(layoutInflater)
keyboardView = binding.keyboardView.apply {
setKeyboardHolder(binding)
setKeyboard(keyboard!!)
setEditorInfo(currentInputEditorInfo)
mOnKeyboardActionListener = this@SimpleKeyboardIME
}
return binding.root
}
override fun onPress(primaryCode: Int) {
if (primaryCode != 0) {
keyboardView?.vibrateIfNeeded()
}
}
override fun onStartInput(attribute: EditorInfo?, restarting: Boolean) {
super.onStartInput(attribute, restarting)
inputTypeClass = attribute!!.inputType and TYPE_MASK_CLASS
inputTypeClassVariation = attribute.inputType and TYPE_MASK_VARIATION
enterKeyType = attribute.imeOptions and (IME_MASK_ACTION or IME_FLAG_NO_ENTER_ACTION)
keyboard = createNewKeyboard()
keyboardView?.setKeyboard(keyboard!!)
keyboardView?.setEditorInfo(attribute)
if (isNougatPlus()) {
breakIterator = BreakIterator.getCharacterInstance(ULocale.getDefault())
}
updateShiftKeyState()
}
private fun updateShiftKeyState() {
if (keyboard?.mShiftState == ShiftState.ON_PERMANENT) {
return
}
val editorInfo = currentInputEditorInfo
if (config.enableSentencesCapitalization && editorInfo != null && editorInfo.inputType != TYPE_NULL) {
if (currentInputConnection.getCursorCapsMode(editorInfo.inputType) != 0) {
keyboard?.setShifted(ShiftState.ON_ONE_CHAR)
keyboardView?.invalidateAllKeys()
return
}
}
keyboard?.setShifted(ShiftState.OFF)
keyboardView?.invalidateAllKeys()
}
@RequiresApi(Build.VERSION_CODES.R)
override fun onCreateInlineSuggestionsRequest(uiExtras: Bundle): InlineSuggestionsRequest {
val maxWidth = resources.getDimensionPixelSize(R.dimen.suggestion_max_width)
return InlineSuggestionsRequest.Builder(
listOf(
InlinePresentationSpec.Builder(
Size(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT),
Size(maxWidth, ViewGroup.LayoutParams.WRAP_CONTENT)
).setStyle(buildSuggestionTextStyle()).build()
)
).setMaxSuggestionCount(InlineSuggestionsRequest.SUGGESTION_COUNT_UNLIMITED)
.build()
}
@RequiresApi(Build.VERSION_CODES.R)
override fun onInlineSuggestionsResponse(response: InlineSuggestionsResponse): Boolean {
keyboardView?.clearClipboardViews()
response.inlineSuggestions.forEach {
it.inflate(this, Size(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT), this.mainExecutor) { view ->
// If inflation fails for whatever reason, passed view will be null
if (view != null) {
keyboardView?.addToClipboardViews(view, addToFront = it.info.isPinned)
}
}
}
return true
}
override fun onKey(code: Int) {
val inputConnection = currentInputConnection
if (keyboard == null || inputConnection == null) {
return
}
if (code != MyKeyboard.KEYCODE_SHIFT) {
lastShiftPressTS = 0
}
when (code) {
MyKeyboard.KEYCODE_DELETE -> {
val selectedText = inputConnection.getSelectedText(0)
if (TextUtils.isEmpty(selectedText)) {
val count = getCountToDelete(inputConnection)
inputConnection.deleteSurroundingText(count, 0)
} else {
inputConnection.commitText("", 1)
}
}
MyKeyboard.KEYCODE_SHIFT -> {
if (keyboardMode == KEYBOARD_LETTERS) {
when {
keyboard!!.mShiftState == ShiftState.ON_PERMANENT -> keyboard!!.mShiftState = ShiftState.OFF
System.currentTimeMillis() - lastShiftPressTS < SHIFT_PERM_TOGGLE_SPEED -> keyboard!!.mShiftState = ShiftState.ON_PERMANENT
keyboard!!.mShiftState == ShiftState.ON_ONE_CHAR -> keyboard!!.mShiftState = ShiftState.OFF
keyboard!!.mShiftState == ShiftState.OFF -> keyboard!!.mShiftState = ShiftState.ON_ONE_CHAR
}
lastShiftPressTS = System.currentTimeMillis()
} else {
val keyboardXml = if (keyboardMode == KEYBOARD_SYMBOLS) {
keyboardMode = KEYBOARD_SYMBOLS_SHIFT
R.xml.keys_symbols_shift
} else {
keyboardMode = KEYBOARD_SYMBOLS
R.xml.keys_symbols
}
keyboard = MyKeyboard(this, keyboardXml, enterKeyType)
keyboardView!!.setKeyboard(keyboard!!)
}
keyboardView!!.invalidateAllKeys()
}
MyKeyboard.KEYCODE_ENTER -> {
val imeOptionsActionId = getImeOptionsActionId()
if (imeOptionsActionId != IME_ACTION_NONE) {
inputConnection.performEditorAction(imeOptionsActionId)
} else {
inputConnection.sendKeyEvent(KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER))
inputConnection.sendKeyEvent(KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER))
}
}
MyKeyboard.KEYCODE_MODE_CHANGE -> {
val keyboardXml = if (keyboardMode == KEYBOARD_LETTERS) {
keyboardMode = KEYBOARD_SYMBOLS
R.xml.keys_symbols
} else {
keyboardMode = KEYBOARD_LETTERS
getKeyboardLayoutXML()
}
keyboard = MyKeyboard(this, keyboardXml, enterKeyType)
keyboardView!!.setKeyboard(keyboard!!)
}
MyKeyboard.KEYCODE_EMOJI -> {
keyboardView?.openEmojiPalette()
}
else -> {
var codeChar = code.toChar()
val originalText = inputConnection.getExtractedText(ExtractedTextRequest(), 0)?.text
if (Character.isLetter(codeChar) && keyboard!!.mShiftState > ShiftState.OFF) {
if (baseContext.config.keyboardLanguage == LANGUAGE_TURKISH_Q) {
codeChar = codeChar.toString().uppercase(Locale.forLanguageTag("tr")).single()
} else {
codeChar = Character.toUpperCase(codeChar)
}
}
// If the keyboard is set to symbols and the user presses space, we usually should switch back to the letters keyboard.
// However, avoid doing that in cases when the EditText for example requires numbers as the input.
// We can detect that by the text not changing on pressing Space.
if (keyboardMode != KEYBOARD_LETTERS && inputTypeClass == TYPE_CLASS_TEXT && code == MyKeyboard.KEYCODE_SPACE) {
inputConnection.commitText(codeChar.toString(), 1)
val newText = inputConnection.getExtractedText(ExtractedTextRequest(), 0)?.text
if (originalText != newText) {
switchToLetters = true
}
} else {
when {
!originalText.isNullOrEmpty() && cachedVNTelexData.isNotEmpty() -> {
val fullText = originalText.toString() + codeChar.toString()
val lastIndexEmpty = if (fullText.contains(" ")) {
fullText.lastIndexOf(" ")
} else 0
if (lastIndexEmpty >= 0) {
val word = fullText.subSequence(lastIndexEmpty, fullText.length).trim().toString()
val wordChars = word.toCharArray()
val predictWord = StringBuilder()
for (char in wordChars.size - 1 downTo 0) {
predictWord.append(wordChars[char])
val shouldChangeText = predictWord.reverse().toString()
if (cachedVNTelexData.containsKey(shouldChangeText)) {
inputConnection.setComposingRegion(fullText.length - shouldChangeText.length, fullText.length)
inputConnection.setComposingText(cachedVNTelexData[shouldChangeText], fullText.length)
inputConnection.setComposingRegion(fullText.length, fullText.length)
return
}
}
inputConnection.commitText(codeChar.toString(), 1)
updateShiftKeyState()
}
}
else -> {
inputConnection.commitText(codeChar.toString(), 1)
updateShiftKeyState()
}
}
}
}
}
}
private fun getCountToDelete(inputConnection: InputConnection): Int {
if (breakIterator == null || !isNougatPlus()) {
return 1
}
val prevText = inputConnection.getTextBeforeCursor(8, 0)
if (!TextUtils.isEmpty(prevText)) {
return breakIterator?.let {
it.setText(prevText.toString())
val end = it.last()
val start = it.previous()
(end - (if (start == BreakIterator.DONE) 0 else start)).coerceIn(0, prevText?.length)
} ?: 1
}
return 1
}
override fun onActionUp() {
if (switchToLetters) {
// TODO: Change keyboardMode to enum class
keyboardMode = KEYBOARD_LETTERS
keyboard = MyKeyboard(this, getKeyboardLayoutXML(), enterKeyType)
val editorInfo = currentInputEditorInfo
if (editorInfo != null && editorInfo.inputType != TYPE_NULL && keyboard?.mShiftState != ShiftState.ON_PERMANENT) {
if (currentInputConnection.getCursorCapsMode(editorInfo.inputType) != 0) {
keyboard?.setShifted(ShiftState.ON_ONE_CHAR)
}
}
keyboardView!!.setKeyboard(keyboard!!)
switchToLetters = false
}
}
override fun moveCursorLeft() {
moveCursor(false)
}
override fun moveCursorRight() {
moveCursor(true)
}
override fun onText(text: String) {
currentInputConnection?.commitText(text, 1)
}
override fun reloadKeyboard() {
val keyboard = createNewKeyboard()
this.keyboard = keyboard
keyboardView?.setKeyboard(keyboard)
}
private fun createNewKeyboard(): MyKeyboard {
val keyboardXml = when (inputTypeClass) {
TYPE_CLASS_NUMBER -> {
keyboardMode = KEYBOARD_NUMBERS
R.xml.keys_numbers
}
TYPE_CLASS_PHONE -> {
keyboardMode = KEYBOARD_PHONE
R.xml.keys_phone
}
TYPE_CLASS_DATETIME -> {
keyboardMode = KEYBOARD_SYMBOLS
R.xml.keys_symbols
}
else -> {
keyboardMode = KEYBOARD_LETTERS
getKeyboardLayoutXML()
}
}
return MyKeyboard(
context = this,
xmlLayoutResId = keyboardXml,
enterKeyType = enterKeyType,
)
}
override fun onUpdateSelection(oldSelStart: Int, oldSelEnd: Int, newSelStart: Int, newSelEnd: Int, candidatesStart: Int, candidatesEnd: Int) {
super.onUpdateSelection(oldSelStart, oldSelEnd, newSelStart, newSelEnd, candidatesStart, candidatesEnd)
if (newSelStart == newSelEnd) {
keyboardView?.closeClipboardManager()
}
updateShiftKeyState()
}
override fun onUpdateCursorAnchorInfo(cursorAnchorInfo: CursorAnchorInfo?) {
super.onUpdateCursorAnchorInfo(cursorAnchorInfo)
updateShiftKeyState()
}
private fun moveCursor(moveRight: Boolean) {
val extractedText = currentInputConnection?.getExtractedText(ExtractedTextRequest(), 0) ?: return
var newCursorPosition = extractedText.selectionStart
newCursorPosition = if (moveRight) {
newCursorPosition + 1
} else {
newCursorPosition - 1
}
currentInputConnection?.setSelection(newCursorPosition, newCursorPosition)
}
private fun getImeOptionsActionId(): Int {
return if (currentInputEditorInfo.imeOptions and IME_FLAG_NO_ENTER_ACTION != 0) {
IME_ACTION_NONE
} else {
currentInputEditorInfo.imeOptions and IME_MASK_ACTION
}
}
private fun getKeyboardLayoutXML(): Int {
return when (baseContext.config.keyboardLanguage) {
LANGUAGE_BENGALI -> R.xml.keys_letters_bengali
LANGUAGE_BULGARIAN -> R.xml.keys_letters_bulgarian
LANGUAGE_DANISH -> R.xml.keys_letters_danish
LANGUAGE_ENGLISH_DVORAK -> R.xml.keys_letters_english_dvorak
LANGUAGE_ENGLISH_QWERTZ -> R.xml.keys_letters_english_qwertz
LANGUAGE_FRENCH_AZERTY -> R.xml.keys_letters_french_azerty
LANGUAGE_FRENCH_BEPO -> R.xml.keys_letters_french_bepo
LANGUAGE_GERMAN -> R.xml.keys_letters_german
LANGUAGE_GREEK -> R.xml.keys_letters_greek
LANGUAGE_LITHUANIAN -> R.xml.keys_letters_lithuanian
LANGUAGE_NORWEGIAN -> R.xml.keys_letters_norwegian
LANGUAGE_POLISH -> R.xml.keys_letters_polish
LANGUAGE_ROMANIAN -> R.xml.keys_letters_romanian
LANGUAGE_RUSSIAN -> R.xml.keys_letters_russian
LANGUAGE_SLOVENIAN -> R.xml.keys_letters_slovenian
LANGUAGE_SWEDISH -> R.xml.keys_letters_swedish
LANGUAGE_SPANISH -> R.xml.keys_letters_spanish_qwerty
LANGUAGE_TURKISH_Q -> R.xml.keys_letters_turkish_q
LANGUAGE_UKRAINIAN -> R.xml.keys_letters_ukrainian
else -> R.xml.keys_letters_english_qwerty
}
}
@RequiresApi(Build.VERSION_CODES.R)
@SuppressLint("RestrictedApi", "UseCompatLoadingForDrawables")
private fun buildSuggestionTextStyle(): Bundle {
val stylesBuilder = UiVersions.newStylesBuilder()
val verticalPadding = resources.getDimensionPixelSize(R.dimen.small_margin)
val horizontalPadding = resources.getDimensionPixelSize(R.dimen.activity_margin)
val textSize = resources.getDimension(R.dimen.label_text_size) / resources.displayMetrics.scaledDensity
val rippleBg = resources.getDrawable(R.drawable.clipboard_background, theme) as RippleDrawable
val layerDrawable = rippleBg.findDrawableByLayerId(R.id.clipboard_background_holder) as LayerDrawable
layerDrawable.findDrawableByLayerId(R.id.clipboard_background_stroke).applyColorFilter(getStrokeColor())
layerDrawable.findDrawableByLayerId(R.id.clipboard_background_shape).applyColorFilter(getProperBackgroundColor())
val maxWidth = resources.getDimensionPixelSize(R.dimen.suggestion_max_width)
val height = resources.getDimensionPixelSize(R.dimen.label_text_size) + verticalPadding * 2
val chipBackgroundIcon: Icon = rippleBg.toBitmap(width = maxWidth, height = height).toIcon()
val chipStyle =
ViewStyle.Builder()
// don't use Icon.createWithBitmap(), it crashes the app. Issue https://github.com/SimpleMobileTools/Simple-Keyboard/issues/248
.setBackground(chipBackgroundIcon)
.setPadding(horizontalPadding, verticalPadding, horizontalPadding, verticalPadding)
.build()
val iconStyle = ImageViewStyle.Builder().build()
val style = InlineSuggestionUi.newStyleBuilder()
.setSingleIconChipStyle(chipStyle)
.setChipStyle(chipStyle)
.setStartIconStyle(iconStyle)
.setEndIconStyle(iconStyle)
.setSingleIconChipIconStyle(iconStyle)
.setTitleStyle(
TextViewStyle.Builder()
.setLayoutMargin(0, 0, horizontalPadding, 0)
.setTextColor(getProperTextColor())
.setTextSize(textSize)
.build()
)
.setSubtitleStyle(
TextViewStyle.Builder()
.setTextColor(getProperTextColor())
.setTextSize(textSize)
.build()
)
.build()
stylesBuilder.addStyle(style)
return stylesBuilder.build()
}
override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
keyboardView?.setupKeyboard()
}
private fun Bitmap.toIcon(): Icon {
val byteArray: ByteArray = ByteArrayOutputStream().let { outputStream ->
this.compress(Bitmap.CompressFormat.PNG, 100, outputStream)
outputStream.toByteArray()
}
this.recycle()
return Icon.createWithData(byteArray, 0, byteArray.size)
}
}