commit ac43dfd5c6141f9870ced8b8ecd64a1e2441309e
parent 5cd87823c76c28ceb052820079b78413a8f05412
Author: massi <mdsiboldi@gmail.com>
Date: Thu, 11 Jul 2024 18:24:25 -0700
move stuff
Diffstat:
1 file changed, 73 insertions(+), 61 deletions(-)
diff --git a/app/src/main/java/com/example/fretboardtrainer/MainActivity.kt b/app/src/main/java/com/example/fretboardtrainer/MainActivity.kt
@@ -60,58 +60,25 @@ import kotlinx.coroutines.flow.update
import kotlinx.coroutines.launch
data object Constants {
- val STRINGS = listOf("E", "B", "G", "D", "A", "E");
+ val STRINGS = listOf("E", "B", "G", "D", "A", "E")
val FRETS = listOf(
"open", "1", "2", "3", "4", "5", "6",
"7", "8", "9", "10", "11", "12"
- );
+ )
val NOTES = listOf(
"A", "A♯/B♭", "B", "C", "C♯/D♭", "D",
"D♯/E♭", "E", "F", "F♯/G♭", "G", "G♯/A♭"
)
const val FRETBOARD_HEIGHT = 200
-}
-
-val Context.dataStore: DataStore<Preferences> by preferencesDataStore(name = "settings")
-
-fun encodeBoolList(l: List<Boolean>): ByteArray {
- return ByteArray(l.size) {
- when (l[it]) {
- true -> 1.toByte()
- else -> 0.toByte()
- }
- }
-}
-
-fun decodeBoolList(arr: ByteArray): List<Boolean> {
- return arr.toList().map { n ->
- when (n) {
- 1.toByte() -> true
- else -> false
- }
- }
-}
-
-fun weightForFret(fretIdx: Int): Float {
- var weight = 24 - fretIdx * 1.0f
- if (fretIdx == 0) {
- weight /= 2
- }
- return weight;
-}
-
-
-fun noteName(note: Note): String {
- val startIdx = Constants.NOTES.indexOf(Constants.STRINGS[note.string])
- return Constants.NOTES[(startIdx + note.fret) % Constants.NOTES.size]
+ val STRING_KEY = byteArrayPreferencesKey("string_key")
+ val FRET_KEY = byteArrayPreferencesKey("fret_key")
}
data class Note(
val string: Int,
- val fret: Int
+ val fret: Int,
)
-// TODO: persist string and fret settings across app launches.
data class FretfretState(
val showSettings: Boolean = false,
val stringSettings: List<Boolean> = List(Constants.STRINGS.size) { true },
@@ -120,27 +87,54 @@ data class FretfretState(
val lastNote: Note? = null,
)
-val STRING_KEY = byteArrayPreferencesKey("string_key")
-val FRET_KEY = byteArrayPreferencesKey("fret_key")
+val Context.dataStore: DataStore<Preferences> by preferencesDataStore(name = "settings")
+
+
+fun weightForFret(fretIdx: Int): Float {
+ var weight = 24 - fretIdx * 1.0f
+ if (fretIdx == 0) {
+ weight /= 2
+ }
+ return weight
+}
+
class MainViewModel(application: Application) : AndroidViewModel(application) {
private val _uiState = MutableStateFlow(FretfretState())
val uiState = _uiState.asStateFlow()
+ private fun encodeBoolList(l: List<Boolean>): ByteArray {
+ return ByteArray(l.size) {
+ when (l[it]) {
+ true -> 1.toByte()
+ else -> 0.toByte()
+ }
+ }
+ }
+
+ private fun decodeBoolList(arr: ByteArray): List<Boolean> {
+ return arr.toList().map { n ->
+ when (n) {
+ 1.toByte() -> true
+ else -> false
+ }
+ }
+ }
+
init {
viewModelScope.launch {
try {
_uiState.update { currentState ->
currentState.copy(
stringSettings = application.dataStore.data.map { prefs ->
- when (prefs[STRING_KEY]) {
- is ByteArray -> decodeBoolList(prefs[STRING_KEY]!!)
+ when (prefs[Constants.STRING_KEY]) {
+ is ByteArray -> decodeBoolList(prefs[Constants.STRING_KEY]!!)
else -> List(Constants.STRINGS.size) { true }
}
}.first(),
fretSettings = application.dataStore.data.map { prefs ->
- when (prefs[FRET_KEY]) {
- is ByteArray -> decodeBoolList(prefs[FRET_KEY]!!)
+ when (prefs[Constants.FRET_KEY]) {
+ is ByteArray -> decodeBoolList(prefs[Constants.FRET_KEY]!!)
else -> List(Constants.FRETS.size) { true }
}
}.first(),
@@ -190,19 +184,19 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
private fun pickNote(): Note {
// find all true values in settings
// randomly pick one of those
- val notes = mutableSetOf<Note>();
+ val notes = mutableSetOf<Note>()
for (stringIdx in uiState.value.stringSettings.indices) {
if (uiState.value.stringSettings[stringIdx]) {
for (fretIdx in uiState.value.fretSettings.indices) {
if (uiState.value.fretSettings[fretIdx]) {
- notes.add(Note(fret = fretIdx, string = stringIdx));
+ notes.add(Note(fret = fretIdx, string = stringIdx))
}
}
}
}
- var newNote = notes.random();
+ var newNote = notes.random()
while (newNote == uiState.value.note) {
- newNote = notes.random();
+ newNote = notes.random()
}
return newNote
}
@@ -218,8 +212,8 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
private suspend fun updateSettings() {
getApplication<Application>().dataStore.edit { settings ->
- settings[STRING_KEY] = encodeBoolList(uiState.value.stringSettings);
- settings[FRET_KEY] = encodeBoolList(uiState.value.fretSettings);
+ settings[Constants.STRING_KEY] = encodeBoolList(uiState.value.stringSettings)
+ settings[Constants.FRET_KEY] = encodeBoolList(uiState.value.fretSettings)
}
}
@@ -261,13 +255,23 @@ class MainActivity : ComponentActivity() {
@Composable
fun Fretfret(viewModel: MainViewModel = viewModel()) {
val uiState by viewModel.uiState.collectAsState()
+ fun noteName(note: Note): String {
+ val startIdx = Constants.NOTES.indexOf(Constants.STRINGS[note.string])
+ return Constants.NOTES[(startIdx + note.fret) % Constants.NOTES.size]
+ }
FretboardTrainerTheme {
Scaffold(
modifier = Modifier.fillMaxSize(),
topBar = {
TopAppBar(
modifier = Modifier.displayCutoutPadding(),
- title = { Text("Fretfret") },
+ title = {
+ if (uiState.showSettings) {
+ Text("Fretfret - Settings")
+ } else {
+ Text("Fretfret")
+ }
+ },
actions = {
IconButton(onClick = { viewModel.toggleSettings() }) {
Icon(
@@ -290,7 +294,7 @@ fun Fretfret(viewModel: MainViewModel = viewModel()) {
if (uiState.showSettings) {
StringSettings(
settings = uiState.stringSettings,
- toggle = { n -> viewModel.toggleString(n) });
+ toggle = { n -> viewModel.toggleString(n) })
}
Column {
Fretboard(
@@ -316,12 +320,12 @@ fun Fretfret(viewModel: MainViewModel = viewModel()) {
}
}
}
- if (!uiState.showSettings) {
- Row(
- modifier = Modifier.fillMaxWidth(),
- horizontalArrangement = Arrangement.SpaceBetween,
- verticalAlignment = Alignment.CenterVertically
- ) {
+ Row(
+ modifier = Modifier.fillMaxWidth(),
+ horizontalArrangement = Arrangement.SpaceBetween,
+ verticalAlignment = Alignment.CenterVertically
+ ) {
+ if (!uiState.showSettings) {
Row {
if (uiState.lastNote != null) {
Text("last answer: ")
@@ -334,6 +338,14 @@ fun Fretfret(viewModel: MainViewModel = viewModel()) {
) {
Text("next")
}
+ } else {
+ Row {}
+ Button(
+ onClick = { viewModel.toggleSettings() },
+ shape = RoundedCornerShape(5.dp)
+ ) {
+ Text("done")
+ }
}
}
}
@@ -365,8 +377,8 @@ fun Fretboard(modifier: Modifier = Modifier, note: Note?) {
shadowElevation = 1.dp,
shape = RoundedCornerShape(5.dp)
) {
- val lineColor = MaterialTheme.colorScheme.onSurfaceVariant;
- val dotColor = MaterialTheme.colorScheme.outline;
+ val lineColor = MaterialTheme.colorScheme.onSurfaceVariant
+ val dotColor = MaterialTheme.colorScheme.outline
val openStringColor = dotColor
Row(
modifier = modifier
@@ -374,7 +386,7 @@ fun Fretboard(modifier: Modifier = Modifier, note: Note?) {
.height(Constants.FRETBOARD_HEIGHT.dp)
) {
repeat(Constants.FRETS.size) { n: Int ->
- val weight = weightForFret(n);
+ val weight = weightForFret(n)
val nutWidth = 12.dp
val fretWidth = if (n == 0) nutWidth else 6.dp
Box(
