compose/foundation/foundation/integration-tests/foundation-demos/src/main/java/androidx/compose/foundation/demos/WindowInsetsDemo.kt

/*
 * Copyright 2022 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.demos

import androidx.compose.foundation.border
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.WindowInsets
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.safeDrawing
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.foundation.text.BasicTextField
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment.Companion.CenterHorizontally
import androidx.compose.ui.Alignment.Companion.CenterVertically
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalDensity
import androidx.compose.ui.platform.LocalLayoutDirection
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.unit.dp

@Composable
fun WindowInsetsDemo() {
    val insets = WindowInsets.safeDrawing
    val density = LocalDensity.current

    Column {
        Text(
            "The numbers around the text field below show the respective WindowInsets values for" +
                " the safeDrawing insets. To use this demo, go the demo app settings (⚙️ icon), " +
                "set the soft input mode to AdjustResize, and disable Decor Fits System Windows." +
                " If you don't configure the settings this way, the insets will not be updated." +
                " Note that IME insets are only supported on API 23 and above."
        )

        Spacer(Modifier.weight(1f))

        BasicTextField(
            value = "Click to show keyboard",
            onValueChange = {},
            modifier = Modifier
                .fillMaxWidth()
                .wrapContentSize(),
            textStyle = TextStyle(color = Color.Black.copy(alpha = 0.5f))
        ) { field ->
            with(density) {
                Column(horizontalAlignment = CenterHorizontally) {
                    Text(
                        insets.getTop(density).toDp().toString(),
                        style = MaterialTheme.typography.caption
                    )
                    Row(verticalAlignment = CenterVertically) {
                        val layoutDirection = LocalLayoutDirection.current
                        Text(
                            insets.getLeft(density, layoutDirection).toDp().toString(),
                            style = MaterialTheme.typography.caption
                        )
                        Box(
                            Modifier
                                .padding(2.dp)
                                .border(1.dp, Color.Black)
                        ) {
                            field()
                        }
                        Text(
                            insets.getRight(density, layoutDirection).toDp().toString(),
                            style = MaterialTheme.typography.caption
                        )
                    }
                    Text(
                        insets.getBottom(density).toDp().toString(),
                        style = MaterialTheme.typography.caption
                    )
                }
            }
        }
    }
}