From 611374d80092ce2a2336846b74174608041bcc1b Mon Sep 17 00:00:00 2001
From: Thomas Andres Gomez <thomas.andres.gomez@gmail.com>
Date: Tue, 19 Jul 2022 11:20:45 +0200
Subject: [PATCH] Add SharedDelay feature to the AnimatedOffset

---
 .../composable/animation/AnimatedDelayer.kt   | 31 ++++++++++++++++---
 .../ui/composable/animation/AnimatedOffset.kt |  2 +-
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/app/src/main/java/com/pixelized/biblib/ui/composable/animation/AnimatedDelayer.kt b/app/src/main/java/com/pixelized/biblib/ui/composable/animation/AnimatedDelayer.kt
index 42bd967..a377404 100644
--- a/app/src/main/java/com/pixelized/biblib/ui/composable/animation/AnimatedDelayer.kt
+++ b/app/src/main/java/com/pixelized/biblib/ui/composable/animation/AnimatedDelayer.kt
@@ -2,13 +2,14 @@ package com.pixelized.biblib.ui.composable.animation
 
 import androidx.compose.animation.*
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Stable
 
 @Composable
 fun AnimatedDelayer(
     delay: Int = Delay.DELTA,
     content: @Composable AnimatedDelayerScope.() -> Unit
 ) {
-    val scope = AnimatedDelayerScope(
+    val scope = IncreasedDelayerScope(
         delay = Delay(value = delay)
     )
     scope.content()
@@ -33,9 +34,31 @@ fun <T> AnimatedDelayer(
     }
 }
 
-class AnimatedDelayerScope(
-    var delay: Delay = Delay()
-)
+@Composable
+fun AnimatedDelayerScope.SharedDelay(content: @Composable AnimatedDelayerScope.() -> Unit) {
+    val localScope = SharedDelayerScope(delay = play())
+    localScope.content()
+}
+
+@Stable
+interface AnimatedDelayerScope {
+    val delay: Delay
+    fun play(): Delay
+}
+
+@Stable
+private class IncreasedDelayerScope(
+    override var delay: Delay
+): AnimatedDelayerScope {
+    override fun play(): Delay = delay++
+}
+
+@Stable
+private class SharedDelayerScope(
+    override var delay: Delay
+): AnimatedDelayerScope {
+    override fun play(): Delay = delay
+}
 
 @JvmInline
 value class Delay(
diff --git a/app/src/main/java/com/pixelized/biblib/ui/composable/animation/AnimatedOffset.kt b/app/src/main/java/com/pixelized/biblib/ui/composable/animation/AnimatedOffset.kt
index ed00496..88860ff 100644
--- a/app/src/main/java/com/pixelized/biblib/ui/composable/animation/AnimatedOffset.kt
+++ b/app/src/main/java/com/pixelized/biblib/ui/composable/animation/AnimatedOffset.kt
@@ -26,7 +26,7 @@ fun AnimatedDelayerScope.AnimatedOffset(
     AnimatedOffset(
         modifier = modifier,
         transitionLabel = transitionLabel,
-        delay = delay++,
+        delay = play(),
         contentAlignment = contentAlignment,
         content = content,
     )