1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.compose.animation.scene
18 
19 import androidx.compose.runtime.Stable
20 import androidx.compose.ui.input.pointer.PointerInputChange
21 
22 /** {@link SwipeDetector} helps determine whether a swipe gestured has occurred. */
23 @Stable
24 interface SwipeDetector {
25     /**
26      * Invoked on changes to pointer input. Returns {@code true} if a swipe has been recognized,
27      * {@code false} otherwise.
28      */
detectSwipenull29     fun detectSwipe(change: PointerInputChange): Boolean
30 }
31 
32 val DefaultSwipeDetector = PassthroughSwipeDetector()
33 
34 /** An {@link SwipeDetector} implementation that recognizes a swipe on any input. */
35 class PassthroughSwipeDetector : SwipeDetector {
36     override fun detectSwipe(change: PointerInputChange): Boolean {
37         // Simply accept all changes as a swipe
38         return true
39     }
40 }
41