| /* |
| * 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.foundation.samples |
| |
| import androidx.annotation.Sampled |
| import androidx.compose.Composable |
| import androidx.compose.remember |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.gesture.scrollorientationlocking.Orientation |
| import androidx.compose.foundation.Border |
| import androidx.compose.foundation.Box |
| import androidx.compose.foundation.Interaction |
| import androidx.compose.foundation.InteractionState |
| import androidx.compose.foundation.Text |
| import androidx.compose.foundation.clickable |
| import androidx.compose.foundation.currentTextStyle |
| import androidx.compose.foundation.gestures.draggable |
| import androidx.compose.ui.graphics.Color |
| import androidx.compose.foundation.layout.fillMaxSize |
| import androidx.compose.foundation.layout.preferredSize |
| import androidx.compose.foundation.layout.wrapContentSize |
| import androidx.compose.ui.text.style.TextAlign |
| import androidx.ui.unit.dp |
| |
| @Sampled |
| @Composable |
| fun InteractionStateSample() { |
| val interactionState = remember { InteractionState() } |
| |
| val draggable = Modifier.draggable( |
| orientation = Orientation.Horizontal, |
| interactionState = interactionState |
| ) { /* update some business state here */ } |
| |
| // Use InteractionState to determine how this component should appear during transient UI states |
| val (text, color) = when { |
| Interaction.Dragged in interactionState -> "Dragged" to Color.Red |
| Interaction.Pressed in interactionState -> "Pressed" to Color.Blue |
| // Default / baseline state |
| else -> "Drag me horizontally, or press me!" to Color.Black |
| } |
| |
| Box( |
| Modifier |
| .fillMaxSize() |
| .wrapContentSize() |
| .preferredSize(width = 240.dp, height = 80.dp) |
| ) { |
| Box( |
| Modifier |
| .fillMaxSize() |
| .clickable(interactionState = interactionState) { /* do nothing */ } |
| .plus(draggable), |
| border = Border(3.dp, color) |
| ) { |
| Text( |
| text, style = currentTextStyle().copy(textAlign = TextAlign.Center), |
| modifier = Modifier.fillMaxSize().wrapContentSize() |
| ) |
| } |
| } |
| } |