| /* |
| * Copyright 20 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.benchmark |
| |
| import androidx.compose.foundation.background |
| import androidx.compose.foundation.layout.Box |
| import androidx.compose.foundation.layout.ExperimentalLayoutApi |
| import androidx.compose.foundation.layout.FlowColumn |
| import androidx.compose.foundation.layout.size |
| import androidx.compose.runtime.Composable |
| import androidx.compose.runtime.MutableState |
| import androidx.compose.runtime.mutableStateOf |
| import androidx.compose.runtime.remember |
| import androidx.compose.testutils.LayeredComposeTestCase |
| import androidx.compose.testutils.ToggleableTestCase |
| import androidx.compose.ui.Modifier |
| import androidx.compose.ui.graphics.Color |
| import androidx.compose.ui.unit.dp |
| |
| /** |
| * Test case that puts the given amount of rectangles into a column layout and makes changes by |
| * modifying the color used in the model. |
| * |
| * Note: Each rectangle has its own model so changes should always affect only the first one. |
| */ |
| @OptIn(ExperimentalLayoutApi::class) |
| class RectsInFlowColumnTestCase( |
| private val amountOfRectangles: Int |
| ) : LayeredComposeTestCase(), ToggleableTestCase { |
| |
| private val states = mutableListOf<MutableState<Color>>() |
| |
| @Composable |
| override fun MeasuredContent() { |
| FlowColumn(maxItemsInEachColumn = 3) { |
| repeat(amountOfRectangles) { |
| ColoredRectWithModel() |
| } |
| } |
| } |
| |
| override fun toggleState() { |
| val state = states.first() |
| if (state.value == Color.Magenta) { |
| state.value = Color.Blue |
| } else { |
| state.value = Color.Magenta |
| } |
| } |
| |
| @Composable |
| fun ColoredRectWithModel() { |
| val state = remember { mutableStateOf(Color.Black) } |
| states.add(state) |
| Box( |
| Modifier |
| .size(100.dp, 50.dp) |
| .background(color = state.value)) |
| } |
| } |