Implements Chords analysis to show degree&chords(click degree) on partition

composeApp/src/androidMain/kotlin/mg/dot/feufaro/ui/MyVerticalScrollbar.kt

@@ -1,16 +1,119 @@
 package mg.dot.feufaro.ui
 
 import androidx.compose.foundation.ScrollState
+import androidx.compose.foundation.background
+import androidx.compose.foundation.gestures.Orientation
+import androidx.compose.foundation.gestures.draggable
+import androidx.compose.foundation.gestures.rememberDraggableState
+import androidx.compose.foundation.gestures.scrollBy
+import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyListState
-import androidx.compose.runtime.Composable
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.blur
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.onGloballyPositioned
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.unit.dp
+import kotlinx.coroutines.launch
 
 @Composable
-actual fun  MyVerticalScrollbar (
+actual fun MyVerticalScrollbar(
     modifier: Modifier,
     scrollState: ScrollState?,
     lazyListState: LazyListState?,
     content: @Composable () -> Unit
-){
+) {
+    val coroutineScope = rememberCoroutineScope()
+    val density = LocalDensity.current
+
+    var containerHeight by remember { mutableStateOf(1f) }
+    val thumbHeight = 75.dp
+
+    val scrollPercentage by remember(scrollState, lazyListState) {
+        derivedStateOf {
+            if (scrollState != null && scrollState.maxValue > 0) {
+                scrollState.value.toFloat() / scrollState.maxValue
+            } else if (lazyListState != null) {
+                val layoutInfo = lazyListState.layoutInfo
+                val totalItems = layoutInfo.totalItemsCount
+                if (totalItems == 0) 0f else {
+                    val firstVisibleItem = lazyListState.firstVisibleItemIndex
+                    firstVisibleItem.toFloat() / totalItems
+                }
+            } else {
+                0f
+            }
+        }
+    }
+
+    Box(
+        modifier = modifier.onGloballyPositioned { coordinates ->
+            containerHeight = coordinates.size.height.toFloat()
+        }
+    ) {
         content()
+
+        Box(
+            modifier = Modifier
+                .align(Alignment.CenterEnd)
+                .fillMaxHeight()
+                .width(15.dp)
+                .background(Color.Transparent)
+        ) {
+            val thumbHeightPx = with(density) { thumbHeight.toPx() }
+            val maxOffset = containerHeight - thumbHeightPx
+            val currentThumbOffset = (scrollPercentage * maxOffset).coerceIn(0f, maxOffset.coerceAtLeast(0f))
+
+            Box(
+                modifier = Modifier
+                    .offset(y = with(density) { currentThumbOffset.toDp() })
+                    .width(10.dp)
+                    .height(thumbHeight)
+                    .align(Alignment.TopEnd)
+                    .clip(RoundedCornerShape(5.dp))
+                    .background(
+                        brush = Brush.verticalGradient(
+                            colors = listOf(
+                                MaterialTheme.colorScheme.secondary.copy(alpha = 1f),
+                                MaterialTheme.colorScheme.secondary.copy(alpha = 0.75f),
+                                MaterialTheme.colorScheme.secondary.copy(alpha = 0.5f)
+                            )
+                        )
+                    )
+                    .draggable(
+                        orientation = Orientation.Vertical,
+                        state = rememberDraggableState { delta ->
+                            coroutineScope.launch {
+                                if (maxOffset > 0) {
+                                    val scrollRatio = delta / maxOffset
+                                    if (scrollState != null) {
+                                        scrollState.scrollBy(scrollRatio * scrollState.maxValue)
+                                    } else if (lazyListState != null) {
+                                        val totalItems = lazyListState.layoutInfo.totalItemsCount
+                                        lazyListState.scrollBy(scrollRatio * totalItems * 120f)
+                                    }
+                                }
+                            }
+                        }
+                    )
+            ) {
+                Box(
+                    modifier = Modifier
+                        .align(Alignment.TopCenter)
+                        .padding(top = 4.dp)
+                        .size(6.dp)
+                        .blur(1.dp)
+                        .background(MaterialTheme.colorScheme.background, RoundedCornerShape(3.dp))
+                )
+            }
+        }
+    }
 }

composeApp/src/commonMain/kotlin/mg/dot/feufaro/solfa/HarmonicAnalyser.kt

@@ -0,0 +1,261 @@
+package mg.dot.feufaro.solfa
+
+
+object HarmonicAnalyzer {
+    private val solfaToSemitones = mapOf(
+        "d" to 0,  "D" to 1,
+        "r" to 2,  "R" to 3,
+        "m" to 4,
+        "f" to 5,  "F" to 6,
+        "s" to 7,  "S" to 8,
+        "l" to 9,  "T" to 10,
+        "t" to 11
+    )
+
+    private val semitoneToDegree = mapOf(
+        0  to "I",    1  to "bII",
+        2  to "II",   3  to "bIII",
+        4  to "III",
+        5  to "IV",   6  to "#IV",
+        7  to "V",    8  to "bVI",
+        9  to "VI",   10 to "bVII",
+        11 to "VII"
+    )
+
+    private val noteNames = listOf(
+        "C", "C#", "D", "Eb", "E", "F", "F#", "G", "Ab", "A", "Bb", "B"
+    )
+
+    private val keyOffsets = mapOf(
+        "C"  to 0, "C#" to 1, "Db" to 1, "D"  to 2, "Eb" to 3,
+        "E"  to 4, "F"  to 5, "F#" to 6, "Gb" to 6, "G"  to 7,
+        "Ab" to 8, "A"  to 9, "Bb" to 10,"B"  to 11
+    )
+
+    private val chordDefinitions = listOf(
+        ChordDef("maj7",     setOf(0, 4, 7, 11), setOf(4, 11),    12),
+        ChordDef("7",        setOf(0, 4, 7, 10), setOf(4, 10),    12),
+        ChordDef("m7",       setOf(0, 3, 7, 10), setOf(3, 10),    12),
+        ChordDef("dim7",     setOf(0, 3, 6, 9),  setOf(3, 6, 9),  12),
+        ChordDef("m7b5",     setOf(0, 3, 6, 10), setOf(3, 6, 10), 12),
+        ChordDef("7sus4",    setOf(0, 5, 7, 10), setOf(5, 10),    12),
+        ChordDef("maj7sus2", setOf(0, 2, 7, 11), setOf(2, 11),    12),
+        ChordDef("maj7#11",  setOf(0, 4, 6, 7),  setOf(4, 6),     12),
+        ChordDef("add9",     setOf(0, 2, 4, 7),  setOf(2, 4),     11),
+        ChordDef("madd9",    setOf(0, 2, 3, 7),  setOf(2, 3),     11),
+        ChordDef("add11",    setOf(0, 4, 5, 7),  setOf(4, 5),     11),
+
+        ChordDef("",     setOf(0, 4, 7),  setOf(4),    8),
+        ChordDef("m",    setOf(0, 3, 7),  setOf(3),    8),
+        ChordDef("dim",  setOf(0, 3, 6),  setOf(3, 6), 8),
+        ChordDef("aug",  setOf(0, 4, 8),  setOf(4, 8), 8),
+        ChordDef("sus2", setOf(0, 2, 7),  setOf(2),    8),
+        ChordDef("sus4", setOf(0, 5, 7),  setOf(5),    8),
+
+        ChordDef("5",    setOf(0, 7),     setOf(7),    5),
+        ChordDef("",     setOf(0, 4),     setOf(4),    5),
+        ChordDef("m",    setOf(0, 3),     setOf(3),    5),
+
+        ChordDef("",     setOf(0),        setOf(),     3)
+    )
+
+    private val MULTI_NOTE_SEPARATORS = Regex("""[•/|+ ,]+""")
+
+
+    fun splitSlices(notes: Map<Int, String>): List<Map<Int, String>> {
+        val splitRaw: Map<Int, List<String>> = notes.mapValues { (_, raw) ->
+            val parts = raw.split(MULTI_NOTE_SEPARATORS).map { it.trim() }.filter { it.isNotEmpty() }
+            if (parts.isEmpty()) listOf("") else parts
+        }
+
+        val sliceCount = splitRaw.values.maxOfOrNull { it.size } ?: 1
+
+        return (0 until sliceCount).map { idx ->
+            splitRaw.mapValues { (_, parts) ->
+                parts.getOrElse(idx) { parts.last() }
+            }
+        }
+    }
+
+    fun analyzeDegree(notes: Map<Int, String>): String {
+        val slices = splitSlices(notes)
+        val isMulti = slices.size > 1
+
+        val degrees = slices.map { slice ->
+            val cleaned = cleanNotes(slice)
+            if (!isMulti) printTable(cleaned)
+            val match = findChordMatch(cleaned) ?: return@map ""
+            val rootDegree = semitoneToDegree[match.root] ?: ""
+            buildSlashNotation("$rootDegree${match.quality}", match, ::semitoneToDegreeStr)
+        }
+
+        if (isMulti) {
+            printTableMulti(notes, slices)
+        }
+
+        val degreeLine = degrees.filter { it.isNotEmpty() }.joinToString("  ")
+
+        /*println("├──────────────────┤")
+        println("│ DEGREE: $degreeLine")
+        println("└──────────────────┘")*/
+
+        return degreeLine
+    }
+
+    fun analyzeChordName(notes: Map<Int, String>, songKey: String = "C"): String {
+        val keyOffset = keyOffsets[songKey] ?: 0
+        val slices = splitSlices(notes)
+
+        val names = slices.map { slice ->
+            val cleaned = cleanNotes(slice)
+            val match = findChordMatch(cleaned) ?: return@map ""
+            val absoluteRoot = (keyOffset + match.root) % 12
+            val chordName = noteNames[absoluteRoot] + match.quality
+            if (match.bass != -1 && match.bass != match.root) {
+                val absoluteBass = (keyOffset + match.bass) % 12
+                "$chordName/${noteNames[absoluteBass]}"
+            } else {
+                chordName
+            }
+        }
+
+        return names.filter { it.isNotEmpty() }.joinToString("  ")
+    }
+
+    private fun cleanOneNote(raw: String): String {
+        var clean = raw
+            .replace(Regex("[()₁₂₃₄¹²³⁴]"), "")
+            .replace("'", "").replace(",", "")
+            .replace("z", "").replace("w", "").replace("@", "")
+            .replace("―", "")
+            .replace("—", "")
+            .trim()
+
+        clean = when {
+            clean.contains("di") -> "D"
+            clean.contains("ri") -> "R"
+            clean.contains("fi") -> "F"
+            clean.contains("si") -> "S"
+            clean.contains("ta") -> "T"
+            else -> clean
+        }
+        return clean
+    }
+
+    private fun cleanNotes(notes: Map<Int, String>): Map<Int, String> =
+        notes.mapValues { (_, raw) -> cleanOneNote(raw) }
+
+    private fun printTable(cleanedNotes: Map<Int, String>) {
+        val voiceNames = mapOf(1 to "S", 2 to "A", 3 to "T", 4 to "B")
+//        println("┌──────┬───────────┐")
+//        println("│ Voix │ Note      │")
+//        println("├──────┼───────────┤")
+        (1..4).forEach { i ->
+            //println("│ ${voiceNames[i]}    │ ${(cleanedNotes[i] ?: "").padEnd(9)} │")
+        }
+    }
+
+    private fun printTableMulti(
+        raw: Map<Int, String>,
+        slices: List<Map<Int, String>>
+    ) {
+        val voiceNames = mapOf(1 to "S", 2 to "A", 3 to "T", 4 to "B")
+        val headers = (1..slices.size).joinToString(" │ ") { "Note${it}  " }
+//        println("┌──────┬───────────┐")
+//        println("│ Voix │ $headers│")
+//        println("├──────┼───────────┤")
+        (1..4).forEach { voiceIdx ->
+            val cols = slices.mapIndexed { _, slice ->
+                (slice[voiceIdx] ?: "").padEnd(5)
+            }.joinToString(" • ")
+            //println("│ ${voiceNames[voiceIdx]}    │ $cols │")
+        }
+    }
+
+    private fun findChordMatch(notes: Map<Int, String>): FullMatch? {
+        val activeNotes = notes.values
+            .filter { it.isNotEmpty() }
+            .mapNotNull { solfaToSemitones[it] }
+        if (activeNotes.isEmpty()) return null
+
+        val uniqueSemitones = activeNotes.toSet()
+        val bassRaw = notes[4]?.trim() ?: ""
+        val bassSemitone = solfaToSemitones[bassRaw] ?: -1
+        var bestMatch: FullMatch? = null
+        var bestScore = -1
+
+        if (bassSemitone != -1) {
+            val intervals = uniqueSemitones.map { (it - bassSemitone + 12) % 12 }.toSet()
+            val result = detectQuality(intervals)
+            if (result != null && result.weight >= 8) {
+                bestMatch = FullMatch(bassSemitone, result.quality, bassSemitone)
+                bestScore = result.weight
+            }
+        }
+
+        for (rootCandidate in uniqueSemitones) {
+            val intervals = uniqueSemitones.map { (it - rootCandidate + 12) % 12 }.toSet()
+            val result = detectQuality(intervals) ?: continue
+            val bassBonus = if (rootCandidate == bassSemitone) 2 else 0
+            val diatonicBonus = if (rootCandidate in setOf(0,2,4,5,7,9,11)) 1 else 0
+            val score = result.weight + bassBonus + diatonicBonus
+
+            if (score > bestScore) {
+                bestScore = score
+                bestMatch = FullMatch(rootCandidate, result.quality, bassSemitone)
+            }
+        }
+
+        return bestMatch
+    }
+
+    private fun detectQuality(intervals: Set<Int>): QualityResult? {
+        if (!intervals.contains(0)) return null
+
+        var bestDef: ChordDef? = null
+        var bestScore = -1
+
+        for (def in chordDefinitions) {
+            if (!intervals.containsAll(def.mandatory)) continue
+
+            val matchingNotes = intervals.count { it in def.structure }
+            val foreignNotes = intervals.count { it !in def.structure }
+
+            val maxForeign = if (def.structure.size <= 2) 0 else 1
+            if (foreignNotes > maxForeign) continue
+
+            val score = def.baseWeight + matchingNotes - (foreignNotes * 3)
+            if (score > bestScore) {
+                bestScore = score
+                bestDef = def
+            }
+        }
+
+        return if (bestDef != null) QualityResult(bestDef.name, bestScore) else null
+    }
+
+    private fun semitoneToDegreeStr(semitone: Int): String =
+        semitoneToDegree[semitone] ?: ""
+
+    private fun buildSlashNotation(
+        chordName: String,
+        match: FullMatch,
+        toStr: (Int) -> String
+    ): String {
+        return if (match.bass != -1 && match.bass != match.root) {
+            "$chordName/${toStr(match.bass)}"
+        } else {
+            chordName
+        }
+    }
+
+    data class ChordDef(
+        val name: String,
+        val structure: Set<Int>,
+        val mandatory: Set<Int>,
+        val baseWeight: Int
+    )
+
+    private data class FullMatch(val root: Int, val quality: String, val bass: Int)
+    private data class QualityResult(val quality: String, val weight: Int)
+}

composeApp/src/commonMain/kotlin/mg/dot/feufaro/solfa/TimeUnitObject.kt

@@ -587,6 +587,8 @@ fun LazyVerticalGridTUO(
     }
 
     val editMode by sharedScreenModel.modeEditor.collectAsState()
+    val showFullChord by sharedScreenModel.harmonyView.collectAsState()
+    var toggleWithDegreeAndChord by remember { mutableStateOf (false) }
 
     val focusManager = LocalFocusManager.current
     Column(
@@ -777,6 +779,63 @@ fun LazyVerticalGridTUO(
                             }
                         }
                     }
+                    if(showFullChord) {
+                        Row(
+                            modifier = Modifier.fillMaxWidth(),
+                            horizontalArrangement = Arrangement.Start,
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
+                            measureTUOs.forEachIndexed { indexInMeasure, tuo ->
+                                val chordMap = (1..4).mapNotNull { voice ->
+                                    val noteStr = tuo.tuNotes.getOrNull(voice)?.toString()
+                                    if (noteStr != null) voice to noteStr else null
+                                }.toMap()
+
+                                val degreeName = remember(chordMap) {
+                                    if (chordMap.isNotEmpty()) HarmonicAnalyzer.analyzeDegree(chordMap) else null
+                                }
+                                val chordName = remember(chordMap) {
+                                    if (chordMap.isNotEmpty()) HarmonicAnalyzer.analyzeChordName(chordMap, sharedScreenModel.songKey.value) else null
+                                }
+
+                                Column(
+                                    modifier = Modifier
+                                        .width(gridWidthDp / gridColumnCount)
+                                ) {
+                                    val maxFontSize = 12.sp
+                                    val minFontSize = 10.sp
+                                    var currentFontSize by remember { mutableStateOf(maxFontSize) }
+
+                                    TextButton(
+                                        onClick = { toggleWithDegreeAndChord = !toggleWithDegreeAndChord },
+                                        contentPadding = PaddingValues(0.dp),
+                                        modifier = Modifier.height(24.dp).fillMaxWidth()
+                                    ) {
+                                        BoxWithConstraints(modifier = Modifier.fillMaxWidth()) {
+                                            val textToDisplay = if (toggleWithDegreeAndChord) (chordName ?: "") else (degreeName ?: "")
+
+                                            Text(
+                                                text = textToDisplay,
+                                                onTextLayout = { textLayoutResult ->
+                                                    if (textLayoutResult.hasVisualOverflow && currentFontSize > minFontSize) {
+                                                        currentFontSize = (currentFontSize.value * 0.9f).sp
+                                                    }
+                                                },
+                                                softWrap = false,
+                                                maxLines = 1,
+                                                overflow = TextOverflow.Visible,
+                                                style = TextStyle(
+                                                    color = if (!toggleWithDegreeAndChord) MaterialTheme.colorScheme.primary else MaterialTheme.colorScheme.secondary.copy(red = MaterialTheme.colorScheme.secondary.red * 0.4f, green = MaterialTheme.colorScheme.secondary.green * 0.4f, blue = MaterialTheme.colorScheme.secondary.blue * 0.4f ),
+                                                    fontWeight = FontWeight.Bold,
+                                                    fontSize = currentFontSize
+                                                )
+                                            )
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
                     Row(modifier = Modifier.fillMaxWidth()) {
                         measureTUOs.forEachIndexed { indexInMeasure, oneTUO ->
                             val globalIndex = (measureIndex * gridColumnCount) + indexInMeasure

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

@@ -62,7 +62,7 @@ fun SimpleDrawerContent(
     var playListExpanded by remember { mutableStateOf(false) }
 
     val editMode by sharedScreenModel.modeEditor.collectAsState()
-    var state1 by remember { mutableStateOf(false) }
+    val chordView by sharedScreenModel.harmonyView.collectAsState()
     var state2 by remember { mutableStateOf(false) }
     ModalDrawerSheet(
         modifier = Modifier.width(300.dp)
@@ -85,14 +85,16 @@ fun SimpleDrawerContent(
                             sharedScreenModel.toggleEditorMode(newState)
                         },
                         thumbIcon = Icons.Default.Edit,
-                        label = "Mode Edit"
+                        label = "Edition"
                     )
 
                     CustomSwitchItem(
-                        checked = state1,
+                        checked = chordView,
-                        onCheckedChange = { state1 = it },
+                        onCheckedChange = { newStateMod ->
+                            sharedScreenModel.toggleHarmonyMode(newStateMod)
+                        },
                         thumbIcon = Icons.Default.MusicNote,
-                        label = "Analyse chords",
+                        label = "Analyse d\'accords"
                     )
                     Column(
                         modifier = Modifier.padding(5.dp),

composeApp/src/commonMain/kotlin/mg/dot/feufaro/viewmodel/SharedScreenModel.kt

@@ -226,6 +226,12 @@ class SharedScreenModel(private val fileRepository: FileRepository) : ScreenMode
     fun toggleEditorMode(enabled: Boolean) {
         _modeEditor.value = enabled
     }
+    private val _harmonyView = MutableStateFlow(false)
+    val harmonyView: StateFlow<Boolean> = _harmonyView
+    fun toggleHarmonyMode(enabled: Boolean) {
+        _harmonyView.value = enabled
+    }
+
     private val _isFullScreen = MutableStateFlow(false)
     val isFullScreen = _isFullScreen.asStateFlow()
 
@@ -658,6 +664,7 @@ class SharedScreenModel(private val fileRepository: FileRepository) : ScreenMode
         _expandedFAB.value = false
         _showSearchMenu.value = false
         _editModeState.value = false
+        _harmonyView.value = false
         setTranspositionInterval(0)
         _midiMarkersList.value = emptyList()
         _tuoTimestamps.value   = emptyList()