| /* |
| * 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.animation.samples |
| |
| import androidx.annotation.Sampled |
| import androidx.compose.Composable |
| import androidx.compose.foundation.Box |
| import androidx.compose.foundation.Text |
| import androidx.compose.foundation.background |
| import androidx.compose.foundation.clickable |
| import androidx.compose.foundation.currentTextStyle |
| import androidx.compose.foundation.layout.padding |
| import androidx.compose.foundation.layout.wrapContentSize |
| import androidx.compose.foundation.shape.corner.RoundedCornerShape |
| import androidx.compose.getValue |
| import androidx.compose.mutableStateOf |
| import androidx.compose.remember |
| import androidx.compose.setValue |
| import androidx.compose.animation.animateContentSize |
| import androidx.ui.core.Modifier |
| import androidx.compose.ui.graphics.Color |
| import androidx.compose.ui.unit.dp |
| |
| @Sampled |
| @Composable |
| fun AnimateContent() { |
| val shortText = "Hi" |
| val longText = "Very long text\nthat spans across\nmultiple lines" |
| var short by remember { mutableStateOf(true) } |
| Box(modifier = Modifier |
| .background(Color.Blue, RoundedCornerShape(15.dp)) |
| .clickable { short = !short } |
| .padding(20.dp) |
| .wrapContentSize() |
| .animateContentSize() |
| ) { |
| Text( |
| if (short) { |
| shortText |
| } else { |
| longText |
| }, |
| style = currentTextStyle().copy(color = Color.White) |
| ) |
| } |
| } |