/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.compose.foundation.gestures
import androidx.compose.foundation.fastFold
import androidx.compose.runtime.Composable
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.input.pointer.PointerEvent
import androidx.compose.ui.unit.Density
import androidx.compose.ui.unit.IntSize
import androidx.compose.ui.unit.dp
@Composable
internal actual fun platformScrollConfig(): ScrollConfig = AndroidConfig
private object AndroidConfig : ScrollConfig {
override fun Density.calculateMouseWheelScroll(event: PointerEvent, bounds: IntSize): Offset {
// 64 dp value is taken from ViewConfiguration.java, replace with better solution
return event.changes.fastFold(Offset.Zero) { acc, c -> acc + c.scrollDelta } * -64.dp.toPx()
}
}