fix: resolve gesture conflicts by unifying drag handlers

Replaced competing pointerInput modifiers with a single unified gesture handler that determines drag direction early. This eliminates conflicts between horizontal seeking and vertical brightness/volume gestures, making swipe interactions more reliable and predictable.

app/src/main/java/hu/bbara/purefin/player/helper/HorizontalSeekGestureHelper.kt

@@ -5,10 +5,10 @@ import kotlin.math.abs
 import kotlin.math.pow
 
 internal object HorizontalSeekGestureHelper {
-    val START_THRESHOLD = 24.dp
-    private const val COEFFICIENT = 1.3f
-    const val EXPONENT = 1.8f
-    private const val MAX_DELTA_MS = 300_000L
+    val START_THRESHOLD = 12.dp
+    private const val COEFFICIENT = 3.1f
+    const val EXPONENT = 1.7f
+    private const val MAX_DELTA_MS = 12_000_000L
 
     fun deltaMs(rawDelta: Float): Long {
         val magnitude = abs(rawDelta)

app/src/main/java/hu/bbara/purefin/player/ui/components/PlayerGesturesLayer.kt

@@ -1,21 +1,22 @@
 package hu.bbara.purefin.player.ui.components
 
-import androidx.compose.foundation.background
-import androidx.compose.foundation.border
-import androidx.compose.foundation.gestures.detectDragGestures
-import androidx.compose.foundation.gestures.detectHorizontalDragGestures
+import androidx.compose.foundation.gestures.awaitEachGesture
+import androidx.compose.foundation.gestures.awaitFirstDown
 import androidx.compose.foundation.gestures.detectTapGestures
+import androidx.compose.foundation.gestures.drag
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxHeight
-import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.input.pointer.PointerInputChange
 import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.input.pointer.positionChange
 import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.unit.dp
 import hu.bbara.purefin.player.helper.HorizontalSeekGestureHelper
+import kotlin.math.abs
 
 @Composable
 fun PlayerGesturesLayer(
@@ -31,85 +32,96 @@ fun PlayerGesturesLayer(
 ) {
     val density = LocalDensity.current
     val horizontalThresholdPx = with(density) { HorizontalSeekGestureHelper.START_THRESHOLD.toPx() }
+    val directionThresholdPx = with(density) { 20.dp.toPx() } // Threshold to determine drag direction
 
     Box(
         modifier = modifier
             .fillMaxWidth(0.90f)
             .fillMaxHeight(0.70f)
-//            .background(Color(2f, 2f, 2f, 0.3f))
             .pointerInput(Unit) {
                 detectTapGestures(
                     onTap = { onTap() },
                     onDoubleTap = { offset ->
-                        // TODO extract it into an enum
                         val screenWidth = size.width
                         val oneThird = screenWidth / 3
                         val secondThird = oneThird * 2
-                        if (offset.x < oneThird) {
-                            onDoubleTapLeft()
-                        } else if (offset.x >= oneThird && offset.x <= secondThird) {
-                            onDoubleTapCenter()
-                        } else {
-                            onDoubleTapRight()
+                        when {
+                            offset.x < oneThird -> onDoubleTapLeft()
+                            offset.x <= secondThird -> onDoubleTapCenter()
+                            else -> onDoubleTapRight()
                         }
                     }
                 )
             }
             .pointerInput(Unit) {
-                detectDragGestures { change, dragAmount ->
-                    val horizontalThreshold = size.width / 2
-                    if (change.position.x < horizontalThreshold) {
-                        onVerticalDragLeft(dragAmount.y)
-                    } else {
-                        onVerticalDragRight(dragAmount.y)
+                awaitEachGesture {
+                    val down = awaitFirstDown(requireUnconsumed = false)
+                    val startX = down.position.x
+
+                    var accumulatedDrag = Offset.Zero
+                    var dragDirection: DragDirection? = null
+                    var accumulatedHorizontalDrag = 0f
+                    var isHorizontalDragActive = false
+                    var lastPreviewDelta: Long? = null
+
+                    val dragResult = drag(down.id) { change ->
+                        val delta = change.positionChange()
+                        accumulatedDrag += delta
+
+                        // Determine direction if not yet determined
+                        if (dragDirection == null && (abs(accumulatedDrag.x) > directionThresholdPx || abs(accumulatedDrag.y) > directionThresholdPx)) {
+                            dragDirection = if (abs(accumulatedDrag.x) > abs(accumulatedDrag.y)) {
+                                DragDirection.HORIZONTAL
+                            } else {
+                                DragDirection.VERTICAL
+                            }
+                        }
+
+                        // Handle based on determined direction
+                        when (dragDirection) {
+                            DragDirection.HORIZONTAL -> {
+                                accumulatedHorizontalDrag += delta.x
+                                if (!isHorizontalDragActive && abs(accumulatedHorizontalDrag) >= horizontalThresholdPx) {
+                                    isHorizontalDragActive = true
+                                }
+                                if (isHorizontalDragActive) {
+                                    change.consume()
+                                    val deltaMs = HorizontalSeekGestureHelper.deltaMs(accumulatedHorizontalDrag)
+                                    if (deltaMs != 0L && deltaMs != lastPreviewDelta) {
+                                        lastPreviewDelta = deltaMs
+                                        onHorizontalDragPreview(deltaMs)
+                                    }
+                                }
+                            }
+                            DragDirection.VERTICAL -> {
+                                val isLeftSide = startX < size.width / 2
+                                if (isLeftSide) {
+                                    onVerticalDragLeft(delta.y)
+                                } else {
+                                    onVerticalDragRight(delta.y)
+                                }
+                            }
+                            null -> {
+                                // Direction not determined yet, keep accumulating
+                            }
+                        }
                     }
+
+                    // Handle drag end
+                    if (dragDirection == DragDirection.HORIZONTAL && isHorizontalDragActive) {
+                        val deltaMs = HorizontalSeekGestureHelper.deltaMs(accumulatedHorizontalDrag)
+                        if (deltaMs != 0L) {
+                            onHorizontalDrag(deltaMs)
+                            onHorizontalDragPreview(deltaMs)
+                        }
+                    }
+                    onHorizontalDragPreview(null)
                 }
             }
-            .pointerInput(Unit) {
-                var accumulatedHorizontalDrag = 0f
-                var isHorizontalDragActive = false
-                var lastPreviewDelta: Long? = null
-                detectHorizontalDragGestures(
-                    onDragStart = {
-                        accumulatedHorizontalDrag = 0f
-                        isHorizontalDragActive = false
-                        lastPreviewDelta = null
-                        onHorizontalDragPreview(null)
-                    },
-                    onHorizontalDrag = { change, dragAmount ->
-                        accumulatedHorizontalDrag += dragAmount
-                        if (!isHorizontalDragActive && kotlin.math.abs(accumulatedHorizontalDrag) >= horizontalThresholdPx) {
-                            isHorizontalDragActive = true
-                        }
-                        if (isHorizontalDragActive) {
-                            change.consume()
-                            val deltaMs = HorizontalSeekGestureHelper.deltaMs(accumulatedHorizontalDrag)
-                            if (deltaMs != 0L && deltaMs != lastPreviewDelta) {
-                                lastPreviewDelta = deltaMs
-                                onHorizontalDragPreview(deltaMs)
-                            }
-                        }
-                    },
-                    onDragEnd = {
-                        if (isHorizontalDragActive) {
-                            val deltaMs = HorizontalSeekGestureHelper.deltaMs(accumulatedHorizontalDrag)
-                            if (deltaMs != 0L) {
-                                onHorizontalDrag(deltaMs)
-                                onHorizontalDragPreview(deltaMs)
-                            }
-                        }
-                        accumulatedHorizontalDrag = 0f
-                        isHorizontalDragActive = false
-                        lastPreviewDelta = null
-                        onHorizontalDragPreview(null)
-                    },
-                    onDragCancel = {
-                        accumulatedHorizontalDrag = 0f
-                        isHorizontalDragActive = false
-                        lastPreviewDelta = null
-                        onHorizontalDragPreview(null)
-                    }
-                )
-            }
     )
 }
+
+private enum class DragDirection {
+    HORIZONTAL,
+    VERTICAL
+}