EdgeEffectCompat.kt
/*
* Copyright 2021 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 android.content.Context
import android.os.Build
import android.util.AttributeSet
import android.widget.EdgeEffect
import androidx.annotation.DoNotInline
import androidx.annotation.RequiresApi
internal object EdgeEffectCompat {
fun create(context: Context, attrs: AttributeSet?): EdgeEffect {
return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
Api31Impl.create(context, attrs)
} else EdgeEffect(context)
}
fun EdgeEffect.onPullDistanceCompat(
deltaDistance: Float,
displacement: Float
): Float {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
return Api31Impl.onPullDistance(this, deltaDistance, displacement)
}
this.onPull(deltaDistance, displacement)
return deltaDistance
}
fun EdgeEffect.onAbsorbCompat(velocity: Int) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
return this.onAbsorb(velocity)
} else if (this.isFinished) { // only absorb the glow effect if it is not active (finished)
this.onAbsorb(velocity)
}
}
val EdgeEffect.distanceCompat: Float
get() {
return if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.S)) {
Api31Impl.getDistance(this)
} else 0f
}
}
@RequiresApi(Build.VERSION_CODES.S)
private object Api31Impl {
@DoNotInline
fun create(context: Context, attrs: AttributeSet?): EdgeEffect {
return try {
EdgeEffect(context, attrs)
} catch (t: Throwable) {
EdgeEffect(context) // Old preview release
}
}
@DoNotInline
fun onPullDistance(
edgeEffect: EdgeEffect,
deltaDistance: Float,
displacement: Float
): Float {
return try {
edgeEffect.onPullDistance(deltaDistance, displacement)
} catch (t: Throwable) {
edgeEffect.onPull(deltaDistance, displacement) // Old preview release
0f
}
}
@DoNotInline
fun getDistance(edgeEffect: EdgeEffect): Float {
return try {
edgeEffect.getDistance()
} catch (t: Throwable) {
0f // Old preview release
}
}
}