| /* |
| * 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.layout.samples |
| |
| import androidx.annotation.Sampled |
| import androidx.compose.Composable |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.layoutId |
| import androidx.compose.foundation.Text |
| import androidx.compose.foundation.layout.ConstraintLayout |
| import androidx.compose.foundation.layout.ConstraintSet2 |
| import androidx.compose.foundation.layout.Dimension |
| import androidx.compose.foundation.layout.atMost |
| import androidx.ui.unit.dp |
| |
| @Sampled |
| @Composable |
| fun DemoInlineDSL() { |
| ConstraintLayout { |
| val (text1, text2, text3) = createRefs() |
| |
| Text("Text1", Modifier.constrainAs(text1) { |
| start.linkTo(text2.end, margin = 20.dp) |
| }) |
| Text("Text2", Modifier.constrainAs(text2) { |
| centerTo(parent) |
| }) |
| |
| val barrier = createBottomBarrier(text1, text2) |
| Text("This is a very long text", Modifier.constrainAs(text3) { |
| top.linkTo(barrier, margin = 20.dp) |
| centerHorizontallyTo(parent) |
| width = Dimension.preferredWrapContent.atMost(40.dp) |
| }) |
| } |
| } |
| |
| @Sampled |
| @Composable |
| fun DemoConstraintSet() { |
| ConstraintLayout(ConstraintSet2 { |
| val text1 = createRefFor("text1") |
| val text2 = createRefFor("text2") |
| val text3 = createRefFor("text3") |
| |
| constrain(text1) { |
| start.linkTo(text2.end, margin = 20.dp) |
| } |
| constrain(text2) { |
| centerTo(parent) |
| } |
| |
| val barrier = createBottomBarrier(text1, text2) |
| constrain(text3) { |
| top.linkTo(barrier, margin = 20.dp) |
| centerHorizontallyTo(parent) |
| width = Dimension.preferredWrapContent.atMost(40.dp) |
| } |
| }) { |
| Text("Text1", Modifier.layoutId("text1")) |
| Text("Text2", Modifier.layoutId("text2")) |
| Text("This is a very long text", Modifier.layoutId("text3")) |
| } |
| } |