Clickable.android.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
import android.view.KeyEvent.KEYCODE_DPAD_CENTER
import android.view.KeyEvent.KEYCODE_ENTER
import android.view.KeyEvent.KEYCODE_NUMPAD_ENTER
import android.view.View
import android.view.ViewConfiguration
import android.view.ViewGroup
import androidx.compose.runtime.Composable
import androidx.compose.ui.input.key.KeyEvent
import androidx.compose.ui.input.key.KeyEventType.Companion.KeyUp
import androidx.compose.ui.input.key.key
import androidx.compose.ui.input.key.nativeKeyCode
import androidx.compose.ui.input.key.type
import androidx.compose.ui.platform.LocalView
@Composable
internal actual fun isComposeRootInScrollableContainer(): () -> Boolean {
val view = LocalView.current
return {
view.isInScrollableViewGroup()
}
}
// Copied from View#isInScrollingContainer() which is @hide
private fun View.isInScrollableViewGroup(): Boolean {
var p = parent
while (p != null && p is ViewGroup) {
if (p.shouldDelayChildPressedState()) {
return true
}
p = p.parent
}
return false
}
internal actual val TapIndicationDelay: Long = ViewConfiguration.getTapTimeout().toLong()
/**
* Whether the specified [KeyEvent] represents a user intent to perform a click.
* (eg. When you press Enter on a focused button, it should perform a click).
*/
internal actual val KeyEvent.isClick: Boolean
get() = type == KeyUp && when (key.nativeKeyCode) {
KEYCODE_DPAD_CENTER,
KEYCODE_ENTER,
KEYCODE_NUMPAD_ENTER -> true
else -> false
}