| /* |
| * 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.ui.core.gesture |
| |
| import androidx.ui.core.PointerInputChange |
| import androidx.ui.core.pointerinput.PointerInputFilter |
| import androidx.ui.core.pointerinput.PointerInputModifier |
| import androidx.ui.unit.Duration |
| import androidx.ui.unit.IntSize |
| import androidx.ui.unit.inMilliseconds |
| import androidx.ui.util.fastAny |
| import kotlinx.coroutines.CoroutineScope |
| import kotlinx.coroutines.Job |
| import kotlinx.coroutines.launch |
| import kotlin.coroutines.CoroutineContext |
| |
| // 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 class PointerInputModifierImpl(override val pointerInputFilter: PointerInputFilter) : |
| PointerInputModifier |
| |
| /** |
| * Run [block] after [duration] time passes using [context]. |
| * |
| * @return [Job] which is a reference to the running coroutine such that it can be cancelled via [Job.cancel]. |
| */ |
| internal fun delay(duration: Duration, context: CoroutineContext, block: () -> Unit): Job = |
| CoroutineScope(context).launch { |
| kotlinx.coroutines.delay(duration.inMilliseconds()) |
| block() |
| } |