add auto-scroll to center current measure if partition scrollState max !0

composeApp/src/androidMain/kotlin/mg/dot/feufaro/ConfigPaths.kt

@@ -2,8 +2,19 @@ package mg.dot.feufaro
 
 import android.content.Context
 import org.koin.core.context.GlobalContext
+import java.io.File
 
 actual fun getConfigDirectoryPath(): String {
-    val context = GlobalContext.get().get<Context>()
-    return context.filesDir.absolutePath
+    val baseDir = GlobalContext.get().get<Context>().filesDir
+    val feufa2Folder = File(baseDir, "Feufaro")
+
+    if (!feufa2Folder.exists()) {
+        val created = feufa2Folder.mkdirs()
+        if (created) {
+            println("CP:15: Dossier créé avec succès : ${feufa2Folder.absolutePath}")
+        }
+    }
+
+    val path = feufa2Folder.absolutePath
+    return if (path.endsWith(File.separator)) path else path + File.separator
 }

composeApp/src/androidMain/kotlin/mg/dot/feufaro/midi/MidiPlayer.kt

@@ -1,129 +1,142 @@
 package mg.dot.feufaro.midi
 
-import java.io.File
 import android.media.MediaPlayer
-import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
+import java.io.File
+import java.io.FileInputStream
 
 private var androidMediaPlayer: MediaPlayer?= null
 
 actual class MediaPlayer actual constructor(filename: String, onFinished: () -> Unit) {
-    private val player = androidMediaPlayer?.apply {
-        setDataSource(filename)
-        prepare()
-        setOnCompletionListener {
-            seekTo(0)
-            onFinished()
-        }
-//        val file = File(android.app.Instrumentation().context.filesDir, filename)
-//        if(file.exists()){
-//            androidMediaPlayer?.setDataSource(file.path)
-//            androidMediaPlayer?.prepare()
-//            androidMediaPlayer?.setOnCompletionListener {
-//                onFinished()
-//            }
-//        } else {
-//            println("Fichier midi non trouvée")
-//        }
-    }
+    private var mediaPlayer: MediaPlayer? = MediaPlayer()
     private val voiceStates = mutableListOf(true, true, true, true)
-    private var currentGlobalVolume: Float = 0.8f
+//    private var currentGlobalVolume: Float = 0.8f
 
     private var pointA: Long = -1L
     private var pointB: Long = -1L
+
+    private val playerScope = CoroutineScope(Dispatchers.Default + SupervisorJob())
+    private var abJob: Job? = null
+
     private var isLoopingAB: Boolean = false
+
+    init {
+        try {
+            val file = File(filename)
+            if (file.exists()) {
+                val fis = FileInputStream(file)
+                mediaPlayer?.setDataSource(fis.fd)
+                mediaPlayer?.prepare()
+                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+                    val params = mediaPlayer?.playbackParams ?: android.media.PlaybackParams()
+                    params.speed = 1.0f
+                    mediaPlayer?.playbackParams = params
+                }
+                fis.close()
+
+                mediaPlayer?.setOnCompletionListener {
+                    onFinished()
+                }
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+    }
+
     actual fun play() {
-//        player?.start()
+        mediaPlayer?.start()
     }
     actual fun pause() {
-//        player?.pause()
+        mediaPlayer?.pause()
     }
     actual fun stop() {
-//        player?.stop()
+        mediaPlayer?.stop()
+        mediaPlayer?.prepare()
+        mediaPlayer?.seekTo(0)
+        clearLoop()
     }
+
     actual fun getDuration(): Long {
-//        player!!.duration.toLong() ?: 0L
-        return 4.toLong()
+        return mediaPlayer?.duration?.toLong() ?: 0L
     }
+
     actual fun getCurrentPosition(): Long {
-//        player!!.currentPosition.toLong()
-        return 4.toLong()
+        return mediaPlayer?.currentPosition?.toLong() ?: 0L
     }
+
     actual fun seekTo(position: Long) {
-//        player!!.seekTo(position.toInt())
+        mediaPlayer?.seekTo(position.toInt())
     }
-
 actual fun setVolume(level: Float) {
-//        currentGlobalVolume =level
-//        player?.setVolume(level, level)
+        mediaPlayer?.setVolume(level, level)
     }
 
-    actual fun getLoopState() = Triple(pointA, pointB, isLoopingAB)
-
-    actual fun toggleVoice(index: Int): Unit{
-        voiceStates[index] = !voiceStates[index]
+    actual fun setPointA() {
+        pointA = mediaPlayer?.currentPosition?.toLong() ?: 0L
     }
 
-    actual fun getVoiceStates(): List<Boolean> = voiceStates
-
-    actual fun changeInstru(noInstru: Int): Unit{
-
-    }
-
-    actual fun setPointA(): Unit{
-//        pointA = getCurrentPosition()
-    }
-
-    actual fun setPointB(): Unit{
-        pointB = getCurrentPosition()
-        if(pointB > pointA) {
+    actual fun setPointB() {
+        pointB = mediaPlayer?.currentPosition?.toLong() ?: 0L
+        if (pointB > pointA && pointA != -1L) {
             isLoopingAB = true
             startABMonitor()
         }
     }
 
-    actual fun clearLoop(): Unit{
+    actual fun clearLoop() {
         isLoopingAB = false
+        pointA = -1L
+        pointB = -1L
+        abJob?.cancel()
     }
+
     private fun startABMonitor() {
-        GlobalScope.launch {
+        abJob?.cancel()
+        abJob = playerScope.launch {
             while (isLoopingAB) {
-//                if ((player?.currentPosition ?: 0) >= pointB){
-//                    player?.seekTo(pointA?.toInt())
-//                }
+                val currentPos = mediaPlayer?.currentPosition?.toLong() ?: 0L
+                if (currentPos >= pointB) {
+                    mediaPlayer?.seekTo(pointA.toInt())
+                }
                 delay(50)
             }
         }
     }
-    actual fun setTempo(factor: Float){
 
+    actual fun getLoopState() = Triple(pointA, pointB, isLoopingAB)
+    actual fun toggleVoice(index: Int) {
+        voiceStates[index] = !voiceStates[index]
+        println("Toggle voice $index (Limitation: Nécessite SoundFont/Fluidsynth sur Android)")
+    }
+
+    actual fun getVoiceStates(): List<Boolean> = voiceStates
+
+    actual fun changeInstru(noInstru: Int) {
+    }
+
+    actual fun setTempo(factor: Float) {
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+            mediaPlayer?.let {
+                val params = it.playbackParams
+                params.speed = factor
+                it.playbackParams = params
+            }
+        }
     }
 
     actual fun getCurrentBPM(): Float {
         return 120f
     }
-}
-/*
-actual fun MidiPlayer(filename: String, onFinished: () -> Unit) {
-    StopMidi()
-    val file = File(android.app.Instrumentation().context.filesDir, filename)
-    if(file.exists()){
-        androidMediaPlayer?.setDataSource(file.path)
-        androidMediaPlayer?.prepare()
-        androidMediaPlayer?.setOnCompletionListener {
-            onFinished()
-        }
-        androidMediaPlayer?.start()
-    }
-}
 
-actual fun StopMidi() {
-    androidMediaPlayer?.let {
-        if (it.isPlaying) {
-            it.stop()
-            it.release()
+    fun release() {
+        mediaPlayer?.release()
+        mediaPlayer = null
+        playerScope.coroutineContext.cancel()
     }
 }
-    androidMediaPlayer = null
-}*/

composeApp/src/commonMain/kotlin/mg/dot/feufaro/ScreenSolfa.kt

@@ -34,6 +34,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.layout.onGloballyPositioned
 import androidx.compose.ui.text.font.FontStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.IntOffset
@@ -64,6 +65,7 @@ object ScreenSolfa : Screen {
         val gridTUOData = GridTUOData(measure, tuoList, stanza)
         val coroutineScope = rememberCoroutineScope()
         val scrollState = rememberScrollState()
+        var  viewportHeight by remember { mutableStateOf(0) }
 
         var isScanning by remember { mutableStateOf(false) }
         var qrCodeResult by remember { mutableStateOf("Aucun code scanné") }
@@ -75,7 +77,8 @@ object ScreenSolfa : Screen {
             qrCodeResult = qrCodeResult,
             onScannerButtonClick = {
                 isScanning = true
-            }
+            },
+            solfaScrollState = scrollState
         ) { paddingValues ->
             Box(
                 Modifier.fillMaxSize().padding(paddingValues)
@@ -91,6 +94,9 @@ object ScreenSolfa : Screen {
                                     showContextualMenu = true
                                 }
                             )
+                        }
+                        .onGloballyPositioned { coordinates ->
+                            viewportHeight = coordinates.size.height
                         },
                     horizontalAlignment = Alignment.CenterHorizontally,
                 ) {
@@ -192,7 +198,7 @@ object ScreenSolfa : Screen {
                         }
                         Row (
                             modifier = Modifier
-                                .height(199.dp)
+                                .height(75.dp)
                         ) {
                         }
                     }

composeApp/src/commonMain/kotlin/mg/dot/feufaro/ui/DrawerUI.kt

@@ -50,6 +50,7 @@ fun MainScreenWithDrawer(
     sharedScreenModel: SharedScreenModel,
     qrCodeResult: String,
     onScannerButtonClick: () -> Unit,
+    solfaScrollState: ScrollState,
     content: @Composable (PaddingValues) -> Unit,
 ) {
     val drawerState = rememberDrawerState(initialValue = DrawerValue.Closed)
@@ -79,7 +80,7 @@ val isPos by sharedScreenModel.isPos.collectAsState()
 var isDragging = sharedScreenModel.isDragging
 val currentPos by sharedScreenModel.currentPos.collectAsState()
 val duration by sharedScreenModel.duration.collectAsState()
-val midiFile = "whawyd3.mid"
+val midiFile = "whawyd3.mid" //What do we gain by all our hard work?
 var refreshTrigeer by remember { mutableStateOf(0)}
 
 val volumelevel by sharedScreenModel.volumeLevel.collectAsState()
@@ -248,6 +249,7 @@ LaunchedEffect(isPlay, isPos) {
                                     currentPos = currentPos,
                                     volume = volumelevel,
                                     duration = duration,
+                                    solfaScrollState,
                                     onPlayPauseClick = {
                                         sharedScreenModel.togglePlayPause()
                                     },

composeApp/src/commonMain/kotlin/mg/dot/feufaro/ui/MidiControlPanel.kt

@@ -1,6 +1,11 @@
 package mg.dot.feufaro.ui
 
 import androidx.compose.animation.*
+import androidx.compose.animation.core.AnimationSpec
+import androidx.compose.animation.core.ExperimentalAnimationSpecApi
+import androidx.compose.animation.core.LinearEasing
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.ScrollState
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
@@ -34,6 +39,7 @@ fun MidiControlPanel(
     currentPos: Float,
     volume: Float,
     duration: Float,
+    solfaScrollState: ScrollState,
     onPlayPauseClick: () -> Unit,
     onSeek: (Float) -> Unit,
     onVolumeChange: (Float) -> Unit,
@@ -61,6 +67,26 @@ fun MidiControlPanel(
 
     var showSATBTools by remember { mutableStateOf(false) }
     var expandedCtl by remember { mutableStateOf(false) }
+    val platform = getPlatform().name
+    val coroutineScope = rememberCoroutineScope()
+
+    LaunchedEffect(currentPos, duration, solfaScrollState.viewportSize, solfaScrollState.maxValue) {
+        if (duration > 0f && solfaScrollState.maxValue > 0) {
+            val progress = (currentPos / duration).coerceIn(0f, 1f)
+            val viewportHeight = solfaScrollState.viewportSize.toFloat()
+            val totalContentHeight = solfaScrollState.maxValue + viewportHeight
+
+            val targetY = (progress * (totalContentHeight-200)) - (viewportHeight / 2)
+            val finalTarget = targetY.coerceIn(0f, solfaScrollState.maxValue.toFloat())
+            solfaScrollState.animateScrollTo(
+                value = finalTarget.toInt(),
+                animationSpec = tween (
+                    durationMillis = 300,
+                    easing = LinearEasing
+                )
+            )
+        }
+    }
     LaunchedEffect(tempo) {
         currentBpm = mediaPlayer.getCurrentBPM()
     }
@@ -79,7 +105,7 @@ fun MidiControlPanel(
 
         tempo = newFactor
         mediaPlayer?.setTempo(newFactor)
-        println("tempo : $tempo")
+//        println("tempo : $tempo")
     }
     Column(
         modifier = Modifier.fillMaxWidth()
@@ -91,8 +117,7 @@ fun MidiControlPanel(
         ) {
             Column(
                 modifier = modifier
-                    .fillMaxWidth(if (getPlatform().name.startsWith("Android")) 0.9f else 0.6f)
-                    .padding(16.dp)
+                    .fillMaxWidth(if (platform.startsWith("Android")) 1f else 0.6f)
                     .background(color = Color.Gray.copy(alpha = 0.5f), shape = RoundedCornerShape(size = 5.dp)),
                 horizontalAlignment = Alignment.CenterHorizontally
             ) {
@@ -214,7 +239,7 @@ fun MidiControlPanel(
                                                     slideInHorizontally { -it } + fadeIn() togetherWith slideOutHorizontally { it } + fadeOut()
                                                 }
                                             },
-                                            modifier = Modifier.padding(horizontal = 4.dp)
+                                            modifier = Modifier.padding(horizontal = 2.dp)
                                         ) { displayedBpm ->
                                             val isCenter = displayedBpm == currentBpmInt
                                             Text(
@@ -225,7 +250,7 @@ fun MidiControlPanel(
                                                 modifier = Modifier
                                                     .clip(CircleShape)
                                                     .clickable(enabled = !isCenter) { updateTempoToBpm(displayedBpm) }
-                                                    .padding(horizontal = 4.dp)
+                                                    .padding(horizontal = 2.dp)
                                             )
                                         }
                                     }
@@ -333,6 +358,54 @@ fun MidiControlPanel(
                     }
                     Spacer(modifier = Modifier.weight(1f))
 
+                    if(platform.startsWith("Android")) {
+                        Column(
+                        modifier = Modifier.wrapContentWidth(),
+                        horizontalAlignment = Alignment.CenterHorizontally
+                    ) {
+                            IconButton(
+                                onClick = onPlayPauseClick,
+                                modifier = Modifier.size(48.dp).background(MaterialTheme.colorScheme.primary, CircleShape)
+                            ) {
+                                Icon(
+                                    imageVector = if (isPause) Icons.Filled.PlayArrow else Icons.Filled.Pause,
+                                    contentDescription = "Pla",
+                                    tint = Color.White
+                                )
+                            }
+                        }
+
+                        Spacer(modifier = Modifier.weight(1f))
+
+                        Column {
+                        IconButton(
+                            onClick = {
+                                isPianoSelected = !isPianoSelected
+                                if (isPianoSelected) {
+                                    mediaPlayer?.changeInstru(1)
+                                } else {
+                                    mediaPlayer?.changeInstru(20)
+                                }
+
+                            }
+                        ) {
+                            if (isPianoSelected) {
+                                Icon(
+                                    Icons.Default.Piano,
+                                    contentDescription = "Piano",
+                                    tint = Color.Black
+                                )
+                            } else {
+                                Icon(
+                                    painter = painterResource(Res.drawable.ic_organ),
+                                    contentDescription = "Orgue",
+                                    tint = Color.Black,
+                                    modifier = Modifier.size(25.dp)
+                                )
+                            }
+                        }
+                    }
+                    } else {
                         Column {
                             IconButton(
                                 onClick = {
@@ -363,7 +436,6 @@ fun MidiControlPanel(
                         }
 
                         Spacer(modifier = Modifier.weight(1f))
-
                         Column(
                             modifier = Modifier.wrapContentWidth(),
                             horizontalAlignment = Alignment.CenterHorizontally
@@ -379,11 +451,12 @@ fun MidiControlPanel(
                                 )
                             }
                         }
+                }
+
 
                     Spacer(modifier = Modifier.weight(1f))
 
-                    val platform = getPlatform()
-                    if (platform.name.startsWith("Java")) {
+                    if (platform.startsWith("Java")) {
                         ModernVolumeSlider(
                             volume, onVolumeChange = onVolumeChange
                         )