GestureUtils.kt
/*
* 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.ui.gesture
import androidx.compose.ui.input.pointer.PointerInputChange
import androidx.compose.ui.input.pointer.PointerInputFilter
import androidx.compose.ui.input.pointer.PointerInputModifier
import androidx.compose.ui.unit.IntSize
import androidx.compose.ui.util.fastAny
// TODO(shepshapard): This continues to be very confusing to use. Have to come up with a better
// way of easily expressing this.
/**
* Utility method that determines if any pointers are currently in [bounds].
*
* A pointer is considered in bounds if it is currently down and it's current
* position is within the provided [bounds]
*
* @return True if at least one pointer is in bounds.
*/
fun List<PointerInputChange>.anyPointersInBounds(bounds: IntSize) =
fastAny {
it.current.down &&
it.current.position.x >= 0 &&
it.current.position.x < bounds.width &&
it.current.position.y >= 0 &&
it.current.position.y < bounds.height
}
internal data class PointerInputModifierImpl(override val pointerInputFilter: PointerInputFilter) :
PointerInputModifier