| /* |
| * Copyright 2019 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.demos.gestures |
| |
| import androidx.compose.Composable |
| import androidx.compose.remember |
| import androidx.compose.state |
| import androidx.ui.core.Alignment |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.Popup |
| import androidx.ui.core.gesture.DragObserver |
| import androidx.ui.core.gesture.dragGestureFilter |
| import androidx.compose.foundation.Box |
| import androidx.compose.foundation.ContentGravity |
| import androidx.compose.foundation.Text |
| import androidx.compose.foundation.shape.corner.CircleShape |
| import androidx.compose.ui.graphics.Color |
| import androidx.compose.foundation.layout.Column |
| import androidx.compose.foundation.layout.Stack |
| import androidx.compose.foundation.layout.preferredSize |
| import androidx.compose.ui.text.style.TextAlign |
| import androidx.compose.ui.geometry.Offset |
| import androidx.ui.unit.dp |
| import androidx.ui.unit.round |
| |
| @Composable |
| fun PopupDragDemo() { |
| // TODO fix this demo in RTL (check when draggable handles RTL) |
| val offset = state { |
| Offset.Zero |
| } |
| |
| val observer = remember { |
| object : DragObserver { |
| override fun onDrag(dragDistance: Offset): Offset { |
| offset.value = offset.value + dragDistance |
| return dragDistance |
| } |
| } |
| } |
| |
| Column { |
| Text("That is a pop up with a dragGestureFilter on it. You can drag it around!") |
| Popup(alignment = Alignment.TopStart, offset = offset.value.round()) { |
| Stack { |
| Box( |
| Modifier |
| .dragGestureFilter(observer) |
| .preferredSize(70.dp), |
| shape = CircleShape, |
| backgroundColor = Color.Green, |
| gravity = ContentGravity.Center |
| ) { |
| Text( |
| text = "This is a popup!", |
| textAlign = TextAlign.Center |
| ) |
| } |
| } |
| } |
| } |
| } |