From 2c54bd7eb4c3ffa528ef1331a77d682e7bd44b7f Mon Sep 17 00:00:00 2001
From: Kyant0 <kyant2021@outlook.com>
Date: Sun, 21 Sep 2025 18:21:58 +0800
Subject: [PATCH] Reset InverseLayerScope

---
 .../main/java/com/kyant/backdrop/Backdrop.kt   |  4 +++-
 .../kyant/backdrop/ContentBackdropModifier.kt  |  4 +++-
 .../com/kyant/backdrop/InverseLayerScope.kt    | 18 +++++++++++++++---
 3 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/backdrop/src/main/java/com/kyant/backdrop/Backdrop.kt b/backdrop/src/main/java/com/kyant/backdrop/Backdrop.kt
index 16f4c62..d94ef35 100644
--- a/backdrop/src/main/java/com/kyant/backdrop/Backdrop.kt
+++ b/backdrop/src/main/java/com/kyant/backdrop/Backdrop.kt
@@ -52,7 +52,9 @@ class Backdrop internal constructor(
         val layerBlock = layerBlock
         if (layerBlock != null) {
             withTransform({
-                val inverseLayerScope = inverseLayerScope ?: InverseLayerScope().also { inverseLayerScope = it }
+                val inverseLayerScope =
+                    inverseLayerScope?.apply { reset() }
+                        ?: InverseLayerScope().also { inverseLayerScope = it }
                 with(inverseLayerScope) { inverseTransform(density = density, layerBlock = layerBlock) }
                 translate(-offset.x, -offset.y)
             }) {
diff --git a/backdrop/src/main/java/com/kyant/backdrop/ContentBackdropModifier.kt b/backdrop/src/main/java/com/kyant/backdrop/ContentBackdropModifier.kt
index 2688a34..7e42605 100644
--- a/backdrop/src/main/java/com/kyant/backdrop/ContentBackdropModifier.kt
+++ b/backdrop/src/main/java/com/kyant/backdrop/ContentBackdropModifier.kt
@@ -205,7 +205,9 @@ private class ContentBackdropNode(
             val layerBlock = layerBlock
             if (layerBlock != null) {
                 withTransform({
-                    val inverseLayerScope = inverseLayerScope ?: InverseLayerScope().also { inverseLayerScope = it }
+                    val inverseLayerScope =
+                        inverseLayerScope?.apply { reset() }
+                            ?: InverseLayerScope().also { inverseLayerScope = it }
                     with(inverseLayerScope) { inverseTransform(density = this@draw, layerBlock = layerBlock) }
                 }) {
                     drawLayer(layer)
diff --git a/backdrop/src/main/java/com/kyant/backdrop/InverseLayerScope.kt b/backdrop/src/main/java/com/kyant/backdrop/InverseLayerScope.kt
index dcf2b9b..c2fb66b 100644
--- a/backdrop/src/main/java/com/kyant/backdrop/InverseLayerScope.kt
+++ b/backdrop/src/main/java/com/kyant/backdrop/InverseLayerScope.kt
@@ -6,6 +6,8 @@ import androidx.compose.ui.graphics.BlendMode
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.ColorFilter
 import androidx.compose.ui.graphics.CompositingStrategy
+import androidx.compose.ui.graphics.DefaultCameraDistance
+import androidx.compose.ui.graphics.DefaultShadowColor
 import androidx.compose.ui.graphics.GraphicsLayerScope
 import androidx.compose.ui.graphics.Matrix
 import androidx.compose.ui.graphics.RectangleShape
@@ -33,13 +35,13 @@ internal class InverseLayerScope : GraphicsLayerScope {
     override var rotationX: Float = 0f
     override var rotationY: Float = 0f
     override var rotationZ: Float = 0f
-    override var cameraDistance: Float = 8f
+    override var cameraDistance: Float = DefaultCameraDistance
     override var transformOrigin: TransformOrigin = TransformOrigin.Center
     override var shape: Shape = RectangleShape
     override var clip: Boolean = false
     override var renderEffect: RenderEffect? = null
-    override var ambientShadowColor: Color = Color.Unspecified
-    override var spotShadowColor: Color = Color.Unspecified
+    override var ambientShadowColor: Color = DefaultShadowColor
+    override var spotShadowColor: Color = DefaultShadowColor
     override var compositingStrategy: CompositingStrategy = CompositingStrategy.Auto
     override var blendMode: BlendMode = BlendMode.SrcOver
     override var colorFilter: ColorFilter? = null
@@ -63,6 +65,16 @@ internal class InverseLayerScope : GraphicsLayerScope {
         )
     }
 
+    fun reset() {
+        scaleX = 1f
+        scaleY = 1f
+        translationX = 0f
+        translationY = 0f
+        rotationX = 0f
+        rotationY = 0f
+        rotationZ = 0f
+    }
+
     private fun DrawTransform.inverseTransformAtTopLeft(
         rotationZ: Float = 0f,
         scaleX: Float = 1f,