Compose beta and velocity tracker

.idea/gradle.xml

@@ -14,7 +14,6 @@
             <option value="$PROJECT_DIR$/app" />
           </set>
         </option>
-        <option name="resolveModulePerSourceSet" value="false" />
       </GradleProjectSettings>
     </option>
   </component>

app/src/main/java/eu/wewox/pagecurl/page/CurlGesture.kt

@@ -1,13 +1,16 @@
 package eu.wewox.pagecurl.page
 
+import androidx.compose.animation.core.VectorConverter
+import androidx.compose.animation.core.calculateTargetValue
+import androidx.compose.animation.splineBasedDecay
 import androidx.compose.foundation.gestures.awaitFirstDown
 import androidx.compose.foundation.gestures.drag
 import androidx.compose.foundation.gestures.forEachGesture
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.geometry.Rect
-import androidx.compose.ui.input.pointer.consumeAllChanges
 import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.input.pointer.util.VelocityTracker
 import androidx.compose.ui.unit.IntSize
 import eu.wewox.pagecurl.config.CurlDirection
 import eu.wewox.pagecurl.utils.rotate
@@ -25,6 +28,7 @@ fun Modifier.curlGesture(
         return@pointerInput
     }
 
+    val velocityTracker = VelocityTracker()
     val startRect by lazy { direction.start.multiply(size) }
     val endRect by lazy { direction.end.multiply(size) }
     forEachGesture {
@@ -41,12 +45,26 @@ fun Modifier.curlGesture(
             var dragCurrent = dragStart
             drag(down.id) { change ->
                 dragCurrent = change.position
-                change.consumeAllChanges()
+                velocityTracker.addPosition(System.currentTimeMillis(), dragCurrent)
+                change.consume()
                 val vector = (dragStart - dragCurrent).rotate(PI.toFloat() / 2)
                 onCurl(dragCurrent - vector, dragCurrent + vector)
             }
 
-            if (endRect.contains(dragCurrent)) {
+            val velocity = velocityTracker.calculateVelocity()
+            val decay = splineBasedDecay<Offset>(this)
+            val target = decay.calculateTargetValue(
+                Offset.VectorConverter,
+                dragCurrent,
+                Offset(velocity.x, velocity.y)
+            ).let {
+                Offset(
+                    it.x.coerceIn(0f, size.width.toFloat() - 1),
+                    it.y.coerceIn(0f, size.height.toFloat() - 1)
+                )
+            }
+
+            if (endRect.contains(target)) {
                 onEnd()
             } else {
                 onCancel()

build.gradle

@@ -1,12 +1,12 @@
 buildscript {
     ext {
-        compose_version = '1.2.0-alpha07'
+        compose_version = '1.2.0-beta01'
+    }
 }
-}// Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
     id 'com.android.application' version '7.1.1' apply false
     id 'com.android.library' version '7.1.1' apply false
-    id 'org.jetbrains.kotlin.android' version '1.6.10' apply false
+    id 'org.jetbrains.kotlin.android' version '1.6.21' apply false
 }
 
 task clean(type: Delete) {