| /* |
| * 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.samples |
| |
| import androidx.annotation.Sampled |
| import androidx.compose.runtime.Composable |
| import androidx.compose.runtime.onCommit |
| import androidx.compose.animation.animatedFloat |
| import androidx.ui.core.DrawLayerModifier |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.drawLayer |
| import androidx.compose.foundation.Text |
| |
| @Sampled |
| @Composable |
| fun ChangeOpacity() { |
| Text("Hello World", Modifier.drawLayer(alpha = 0.5f, clip = true)) |
| } |
| |
| @Sampled |
| @Composable |
| fun AnimateFadeIn() { |
| val alpha = animatedFloat(initVal = 0f) |
| val layerModifier = object : DrawLayerModifier { |
| override val alpha: Float get() = alpha.value |
| override val clip: Boolean |
| get() = true |
| } |
| Text("Hello World", layerModifier) |
| onCommit { |
| alpha.animateTo(1f) |
| } |
| } |