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PagerScaffold: blur wallpaper

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MM20 2022-05-11 12:15:00 +02:00
parent 6388669d8a
commit 4aeb5b4db3
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1 changed files with 35 additions and 3 deletions
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38
ui/src/main/java/de/mm20/launcher2/ui/launcher/PagerScaffold.kt
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@ -1,23 +1,31 @@
package de.mm20.launcher2.ui.launcher
import android.app.Activity
import android.view.WindowManager
import androidx.activity.compose.BackHandler
import androidx.compose.animation.AnimatedVisibility
import androidx.compose.animation.core.animateDpAsState
import androidx.compose.animation.slideIn
import androidx.compose.animation.slideOut
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.offset
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.verticalScroll
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.rounded.Done
import androidx.compose.material3.*
import androidx.compose.material3.CenterAlignedTopAppBar
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.Text
import androidx.compose.runtime.*
import androidx.compose.runtime.livedata.observeAsState
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.layout.onSizeChanged
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalDensity
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.IntOffset
import androidx.compose.ui.unit.IntSize
@ -26,6 +34,7 @@ import androidx.lifecycle.viewmodel.compose.viewModel
import com.google.accompanist.pager.ExperimentalPagerApi
import com.google.accompanist.pager.HorizontalPager
import com.google.accompanist.pager.rememberPagerState
import de.mm20.launcher2.ktx.isAtLeastApiLevel
import de.mm20.launcher2.ui.R
import de.mm20.launcher2.ui.ktx.toDp
import de.mm20.launcher2.ui.launcher.search.SearchBar
@ -52,6 +61,29 @@ fun PagerScaffold(
val widgetsScrollState = rememberScrollState()
val searchScrollState = rememberScrollState()
val blurWallpaper by derivedStateOf {
isSearchOpen || pagerState.currentPage == 0 && pagerState.currentPageOffset > 0.5f ||
pagerState.currentPage == 1 && pagerState.currentPageOffset <= 0.5f ||
widgetsScrollState.value > 0
}
val density = LocalDensity.current
LaunchedEffect(blurWallpaper) {
if (!isAtLeastApiLevel(31)) return@LaunchedEffect
(context as Activity).window.attributes = context.window.attributes.also {
if (blurWallpaper) {
it.blurBehindRadius = with(density) { 32.dp.toPx().toInt() }
it.flags = it.flags or WindowManager.LayoutParams.FLAG_BLUR_BEHIND
} else {
it.blurBehindRadius = 0
it.flags = it.flags and WindowManager.LayoutParams.FLAG_BLUR_BEHIND.inv()
}
}
}
val currentPage = pagerState.currentPage
LaunchedEffect(currentPage) {
if (currentPage == 1) viewModel.openSearch()