Fix BottomSheet (#414)
* Fix BottomSheet * Predictive Back for ModelBottomSheet * Naming * Naming * Naming --------- Co-authored-by: GG Bond <whatever@tagkong.com>
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Vladimir DostoyevskiyandGG Bond authored and GitHub committed
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@file:Suppress("ktlint:standard:property-naming", "ktlint:standard:function-naming")
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package androidx.compose.material3
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import android.annotation.SuppressLint
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import android.content.Context
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import android.graphics.PixelFormat
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import android.os.Build
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import android.view.Gravity
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import android.view.View
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import android.view.ViewTreeObserver
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import android.view.WindowManager
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import androidx.activity.OnBackPressedDispatcher
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import androidx.activity.OnBackPressedDispatcherOwner
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import androidx.activity.compose.LocalOnBackPressedDispatcherOwner
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import androidx.compose.animation.core.SpringSpec
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import androidx.compose.animation.core.TweenSpec
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import androidx.compose.animation.core.animateFloatAsState
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import androidx.compose.foundation.Canvas
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import androidx.compose.foundation.gestures.AnchoredDraggableState
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import androidx.compose.foundation.gestures.DraggableAnchors
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import androidx.compose.foundation.gestures.Orientation
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import androidx.compose.foundation.gestures.anchoredDraggable
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import androidx.compose.foundation.gestures.animateTo
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import androidx.compose.foundation.gestures.detectTapGestures
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import androidx.compose.foundation.gestures.snapTo
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import androidx.compose.foundation.layout.Box
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import androidx.compose.foundation.layout.BoxWithConstraints
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import androidx.compose.foundation.layout.Column
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import androidx.compose.foundation.layout.ColumnScope
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import androidx.compose.foundation.layout.WindowInsets
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import androidx.compose.foundation.layout.fillMaxSize
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import androidx.compose.foundation.layout.fillMaxWidth
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import androidx.compose.foundation.layout.imePadding
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import androidx.compose.foundation.layout.offset
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import androidx.compose.foundation.layout.widthIn
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import androidx.compose.foundation.layout.windowInsetsPadding
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.CompositionContext
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import androidx.compose.runtime.CompositionLocalProvider
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import androidx.compose.runtime.DisposableEffect
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import androidx.compose.runtime.Immutable
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import androidx.compose.runtime.LaunchedEffect
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import androidx.compose.runtime.SideEffect
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import androidx.compose.runtime.Stable
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import androidx.compose.runtime.getValue
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import androidx.compose.runtime.mutableStateOf
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import androidx.compose.runtime.remember
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import androidx.compose.runtime.rememberCompositionContext
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import androidx.compose.runtime.rememberCoroutineScope
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import androidx.compose.runtime.rememberUpdatedState
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import androidx.compose.runtime.saveable.Saver
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import androidx.compose.runtime.saveable.rememberSaveable
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import androidx.compose.runtime.setValue
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import androidx.compose.runtime.snapshotFlow
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.geometry.Offset
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import androidx.compose.ui.graphics.Color
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import androidx.compose.ui.graphics.Shape
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import androidx.compose.ui.graphics.graphicsLayer
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import androidx.compose.ui.graphics.isSpecified
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import androidx.compose.ui.input.nestedscroll.NestedScrollConnection
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import androidx.compose.ui.input.nestedscroll.NestedScrollSource
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import androidx.compose.ui.input.nestedscroll.nestedScroll
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import androidx.compose.ui.input.pointer.pointerInput
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import androidx.compose.ui.layout.onSizeChanged
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import androidx.compose.ui.platform.AbstractComposeView
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import androidx.compose.ui.platform.LocalConfiguration
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import androidx.compose.ui.platform.LocalDensity
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import androidx.compose.ui.platform.LocalLayoutDirection
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import androidx.compose.ui.platform.LocalView
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import androidx.compose.ui.platform.ViewRootForInspector
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import androidx.compose.ui.semantics.clearAndSetSemantics
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import androidx.compose.ui.semantics.popup
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import androidx.compose.ui.semantics.semantics
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import androidx.compose.ui.unit.Density
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import androidx.compose.ui.unit.Dp
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import androidx.compose.ui.unit.IntOffset
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import androidx.compose.ui.unit.LayoutDirection
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import androidx.compose.ui.unit.Velocity
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import androidx.compose.ui.unit.dp
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import androidx.compose.ui.util.lerp
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import androidx.compose.ui.window.SecureFlagPolicy
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import androidx.lifecycle.findViewTreeLifecycleOwner
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import androidx.lifecycle.findViewTreeViewModelStoreOwner
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import androidx.lifecycle.setViewTreeLifecycleOwner
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import androidx.lifecycle.setViewTreeViewModelStoreOwner
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import androidx.savedstate.findViewTreeSavedStateRegistryOwner
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import androidx.savedstate.setViewTreeSavedStateRegistryOwner
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import com.hippo.ehviewer.ui.tools.animateFloatMergeOneWayPredictiveBackAsState
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import com.hippo.ehviewer.util.isAtLeastT
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import java.util.UUID
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import kotlin.math.absoluteValue
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import kotlin.math.max
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import kotlin.math.roundToInt
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import kotlinx.coroutines.flow.collectLatest
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import kotlinx.coroutines.flow.drop
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import kotlinx.coroutines.launch
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@Stable
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@ExperimentalMaterial3Api
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internal object AnchoredDraggableDefaults2 {
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/**
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* The default animation used by [AnchoredDraggableState].
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*/
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@get:ExperimentalMaterial3Api
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@Suppress("OPT_IN_MARKER_ON_WRONG_TARGET")
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@ExperimentalMaterial3Api
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val AnimationSpec = SpringSpec<Float>()
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}
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/**
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* State of a sheet composable, such as [ModalBottomSheetFix]
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*
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* Contains states relating to its swipe position as well as animations between state values.
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*
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* @param skipPartiallyExpanded Whether the partially expanded state, if the sheet is large
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* enough, should be skipped. If true, the sheet will always expand to the [Expanded] state and move
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* to the [Hidden] state if available when hiding the sheet, either programmatically or by user
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* interaction.
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* @param initialValue The initial value of the state.
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* @param confirmValueChange Optional callback invoked to confirm or veto a pending state change.
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* @param skipHiddenState Whether the hidden state should be skipped. If true, the sheet will always
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* expand to the [Expanded] state and move to the [PartiallyExpanded] if available, either
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* programmatically or by user interaction.
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*/
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@Stable
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@ExperimentalMaterial3Api
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class SheetState2
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@Deprecated(
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message = "This constructor is deprecated. " +
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"Please use the constructor that provides a [Density]",
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replaceWith = ReplaceWith(
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"SheetState(" +
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"skipPartiallyExpanded, LocalDensity.current, initialValue, " +
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"confirmValueChange, skipHiddenState)",
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),
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)
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constructor(
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internal val skipPartiallyExpanded: Boolean,
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initialValue: SheetValue = SheetValue.Hidden,
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val confirmValueChange: (SheetValue) -> Boolean = { true },
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internal val skipHiddenState: Boolean = false,
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) {
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/**
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* State of a sheet composable, such as [ModalBottomSheetFix]
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*
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* Contains states relating to its swipe position as well as animations between state values.
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*
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* @param skipPartiallyExpanded Whether the partially expanded state, if the sheet is large
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* enough, should be skipped. If true, the sheet will always expand to the [Expanded] state and move
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* to the [Hidden] state if available when hiding the sheet, either programmatically or by user
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* interaction.
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* @param initialValue The initial value of the state.
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* @param density The density that this state can use to convert values to and from dp.
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* @param confirmValueChange Optional callback invoked to confirm or veto a pending state change.
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* @param skipHiddenState Whether the hidden state should be skipped. If true, the sheet will always
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* expand to the [Expanded] state and move to the [PartiallyExpanded] if available, either
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* programmatically or by user interaction.
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*/
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@ExperimentalMaterial3Api
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@Suppress("Deprecation")
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constructor(
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skipPartiallyExpanded: Boolean,
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density: Density,
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initialValue: SheetValue = SheetValue.Hidden,
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confirmValueChange: (SheetValue) -> Boolean = { true },
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skipHiddenState: Boolean = false,
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) : this(skipPartiallyExpanded, initialValue, confirmValueChange, skipHiddenState) {
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this.density = density
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}
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init {
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if (skipPartiallyExpanded) {
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require(initialValue != SheetValue.PartiallyExpanded) {
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"The initial value must not be set to PartiallyExpanded if skipPartiallyExpanded " +
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"is set to true."
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}
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}
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if (skipHiddenState) {
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require(initialValue != SheetValue.Hidden) {
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"The initial value must not be set to Hidden if skipHiddenState is set to true."
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}
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}
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}
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/**
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* The current value of the state.
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*
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* If no swipe or animation is in progress, this corresponds to the state the bottom sheet is
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* currently in. If a swipe or an animation is in progress, this corresponds the state the sheet
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* was in before the swipe or animation started.
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*/
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val currentValue: SheetValue get() = anchoredDraggableState.currentValue
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/**
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* The target value of the bottom sheet state.
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*
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* If a swipe is in progress, this is the value that the sheet would animate to if the
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* swipe finishes. If an animation is running, this is the target value of that animation.
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* Finally, if no swipe or animation is in progress, this is the same as the [currentValue].
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*/
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val targetValue: SheetValue get() = anchoredDraggableState.targetValue
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/**
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* Whether the modal bottom sheet is visible.
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*/
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val isVisible: Boolean
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get() = anchoredDraggableState.currentValue != SheetValue.Hidden
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/**
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* Require the current offset (in pixels) of the bottom sheet.
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*
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* The offset will be initialized during the first measurement phase of the provided sheet
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* content.
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*
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* These are the phases:
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* Composition { -> Effects } -> Layout { Measurement -> Placement } -> Drawing
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*
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* During the first composition, an [IllegalStateException] is thrown. In subsequent
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* compositions, the offset will be derived from the anchors of the previous pass. Always prefer
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* accessing the offset from a LaunchedEffect as it will be scheduled to be executed the next
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* frame, after layout.
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*
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* @throws IllegalStateException If the offset has not been initialized yet
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*/
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fun requireOffset(): Float = anchoredDraggableState.requireOffset()
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/**
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* Whether the sheet has an expanded state defined.
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*/
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val hasExpandedState: Boolean
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get() = anchoredDraggableState.anchors.hasAnchorFor(SheetValue.Expanded)
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/**
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* Whether the modal bottom sheet has a partially expanded state defined.
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*/
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val hasPartiallyExpandedState: Boolean
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get() = anchoredDraggableState.anchors.hasAnchorFor(SheetValue.PartiallyExpanded)
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/**
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* Fully expand the bottom sheet with animation and suspend until it is fully expanded or
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* animation has been cancelled.
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* *
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* @throws [CancellationException] if the animation is interrupted
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*/
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suspend fun expand() {
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anchoredDraggableState.animateTo(SheetValue.Expanded)
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}
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/**
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* Animate the bottom sheet and suspend until it is partially expanded or animation has been
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* cancelled.
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* @throws [CancellationException] if the animation is interrupted
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* @throws [IllegalStateException] if [skipPartiallyExpanded] is set to true
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*/
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suspend fun partialExpand() {
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check(!skipPartiallyExpanded) {
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"Attempted to animate to partial expanded when skipPartiallyExpanded was enabled. Set" +
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" skipPartiallyExpanded to false to use this function."
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}
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animateTo(SheetValue.PartiallyExpanded)
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}
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/**
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* Expand the bottom sheet with animation and suspend until it is [PartiallyExpanded] if defined
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* else [Expanded].
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* @throws [CancellationException] if the animation is interrupted
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*/
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suspend fun show() {
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val targetValue = when {
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hasPartiallyExpandedState -> SheetValue.PartiallyExpanded
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else -> SheetValue.Expanded
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}
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animateTo(targetValue)
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}
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/**
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* Hide the bottom sheet with animation and suspend until it is fully hidden or animation has
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* been cancelled.
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* @throws [CancellationException] if the animation is interrupted
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*/
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suspend fun hide() {
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check(!skipHiddenState) {
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"Attempted to animate to hidden when skipHiddenState was enabled. Set skipHiddenState" +
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" to false to use this function."
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}
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animateTo(SheetValue.Hidden)
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}
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/**
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* Animate to a [targetValue].
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* If the [targetValue] is not in the set of anchors, the [currentValue] will be updated to the
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* [targetValue] without updating the offset.
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*
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* @throws CancellationException if the interaction interrupted by another interaction like a
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* gesture interaction or another programmatic interaction like a [animateTo] or [snapTo] call.
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*
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* @param targetValue The target value of the animation
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*/
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internal suspend fun animateTo(
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targetValue: SheetValue,
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velocity: Float = anchoredDraggableState.lastVelocity,
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) {
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anchoredDraggableState.animateTo(targetValue, velocity)
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}
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/**
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* Snap to a [targetValue] without any animation.
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*
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* @throws CancellationException if the interaction interrupted by another interaction like a
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||||||
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* gesture interaction or another programmatic interaction like a [animateTo] or [snapTo] call.
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*
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* @param targetValue The target value of the animation
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*/
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internal suspend fun snapTo(targetValue: SheetValue) {
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anchoredDraggableState.snapTo(targetValue)
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}
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/**
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* Find the closest anchor taking into account the velocity and settle at it with an animation.
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*/
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internal suspend fun settle(velocity: Float) {
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anchoredDraggableState.settle(velocity)
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}
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internal var anchoredDraggableState = AnchoredDraggableState(
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initialValue = initialValue,
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animationSpec = AnchoredDraggableDefaults2.AnimationSpec,
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confirmValueChange = confirmValueChange,
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positionalThreshold = { with(requireDensity()) { 56.dp.toPx() } },
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velocityThreshold = { with(requireDensity()) { 125.dp.toPx() } },
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)
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internal val offset: Float get() = anchoredDraggableState.offset
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internal var density: Density? = null
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private fun requireDensity() = requireNotNull(density) {
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"SheetState did not have a density attached. Are you using SheetState with " +
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"BottomSheetScaffold or ModalBottomSheet component?"
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}
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companion object {
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||||||
|
/**
|
||||||
|
* The default [Saver] implementation for [SheetState2].
|
||||||
|
*/
|
||||||
|
fun Saver(
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||||||
|
skipPartiallyExpanded: Boolean,
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||||||
|
confirmValueChange: (SheetValue) -> Boolean,
|
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|
density: Density,
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) = Saver<SheetState2, SheetValue>(
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||||||
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save = { it.currentValue },
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||||||
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restore = { savedValue ->
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||||||
|
SheetState2(skipPartiallyExpanded, density, savedValue, confirmValueChange)
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||||||
|
},
|
||||||
|
)
|
||||||
|
|
||||||
|
/**
|
||||||
|
* The default [Saver] implementation for [SheetState2].
|
||||||
|
*/
|
||||||
|
@Deprecated(
|
||||||
|
message = "This function is deprecated. Please use the overload where Density is" +
|
||||||
|
" provided.",
|
||||||
|
replaceWith = ReplaceWith(
|
||||||
|
"Saver(skipPartiallyExpanded, confirmValueChange, LocalDensity.current)",
|
||||||
|
),
|
||||||
|
)
|
||||||
|
@Suppress("Deprecation")
|
||||||
|
fun Saver(
|
||||||
|
skipPartiallyExpanded: Boolean,
|
||||||
|
confirmValueChange: (SheetValue) -> Boolean,
|
||||||
|
) = Saver<SheetState2, SheetValue>(
|
||||||
|
save = { it.currentValue },
|
||||||
|
restore = { savedValue ->
|
||||||
|
SheetState2(skipPartiallyExpanded, savedValue, confirmValueChange)
|
||||||
|
},
|
||||||
|
)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* <a href="https://m3.material.io/components/bottom-sheets/overview" class="external" target="_blank">Material Design modal bottom sheet</a>.
|
||||||
|
*
|
||||||
|
* Modal bottom sheets are used as an alternative to inline menus or simple dialogs on mobile,
|
||||||
|
* especially when offering a long list of action items, or when items require longer descriptions
|
||||||
|
* and icons. Like dialogs, modal bottom sheets appear in front of app content, disabling all other
|
||||||
|
* app functionality when they appear, and remaining on screen until confirmed, dismissed, or a
|
||||||
|
* required action has been taken.
|
||||||
|
*
|
||||||
|
* 
|
||||||
|
*
|
||||||
|
* A simple example of a modal bottom sheet looks like this:
|
||||||
|
*
|
||||||
|
* @sample androidx.compose.material3.samples.ModalBottomSheetSample
|
||||||
|
*
|
||||||
|
* @param onDismissRequest Executes when the user clicks outside of the bottom sheet, after sheet
|
||||||
|
* animates to [Hidden].
|
||||||
|
* @param modifier Optional [Modifier] for the bottom sheet.
|
||||||
|
* @param sheetState The state of the bottom sheet.
|
||||||
|
* @param sheetMaxWidth [Dp] that defines what the maximum width the sheet will take.
|
||||||
|
* Pass in [Dp.Unspecified] for a sheet that spans the entire screen width.
|
||||||
|
* @param shape The shape of the bottom sheet.
|
||||||
|
* @param containerColor The color used for the background of this bottom sheet
|
||||||
|
* @param contentColor The preferred color for content inside this bottom sheet. Defaults to either
|
||||||
|
* the matching content color for [containerColor], or to the current [LocalContentColor] if
|
||||||
|
* [containerColor] is not a color from the theme.
|
||||||
|
* @param tonalElevation The tonal elevation of this bottom sheet.
|
||||||
|
* @param scrimColor Color of the scrim that obscures content when the bottom sheet is open.
|
||||||
|
* @param dragHandle Optional visual marker to swipe the bottom sheet.
|
||||||
|
* @param windowInsets window insets to be passed to the bottom sheet window via [PaddingValues]
|
||||||
|
* params.
|
||||||
|
* @param properties [ModalBottomSheetProperties2] for further customization of this
|
||||||
|
* modal bottom sheet's behavior.
|
||||||
|
* @param content The content to be displayed inside the bottom sheet.
|
||||||
|
*/
|
||||||
|
@Composable
|
||||||
|
@ExperimentalMaterial3Api
|
||||||
|
fun ModalBottomSheetFix(
|
||||||
|
onDismissRequest: () -> Unit,
|
||||||
|
modifier: Modifier = Modifier,
|
||||||
|
sheetState: SheetState2 = rememberModalBottomSheetState(),
|
||||||
|
sheetMaxWidth: Dp = BottomSheetDefaults.SheetMaxWidth,
|
||||||
|
shape: Shape = BottomSheetDefaults.ExpandedShape,
|
||||||
|
containerColor: Color = BottomSheetDefaults.ContainerColor,
|
||||||
|
contentColor: Color = contentColorFor(containerColor),
|
||||||
|
tonalElevation: Dp = BottomSheetDefaults.Elevation,
|
||||||
|
scrimColor: Color = BottomSheetDefaults.ScrimColor,
|
||||||
|
dragHandle: @Composable (() -> Unit)? = { BottomSheetDefaults.DragHandle() },
|
||||||
|
windowInsets: WindowInsets = BottomSheetDefaults.windowInsets,
|
||||||
|
properties: ModalBottomSheetProperties2 = ModalBottomSheetDefaults2.properties(),
|
||||||
|
content: @Composable ColumnScope.() -> Unit,
|
||||||
|
) {
|
||||||
|
// b/291735717 Remove this once deprecated methods without density are removed
|
||||||
|
val density = LocalDensity.current
|
||||||
|
SideEffect {
|
||||||
|
sheetState.density = density
|
||||||
|
}
|
||||||
|
val scope = rememberCoroutineScope()
|
||||||
|
val animateToDismiss: () -> Unit = {
|
||||||
|
if (sheetState.confirmValueChange(SheetValue.Hidden)) {
|
||||||
|
scope.launch { sheetState.hide() }.invokeOnCompletion {
|
||||||
|
if (!sheetState.isVisible) {
|
||||||
|
onDismissRequest()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
LaunchedEffect(sheetState) {
|
||||||
|
snapshotFlow {
|
||||||
|
sheetState.targetValue == SheetValue.Hidden && !sheetState.isVisible
|
||||||
|
}.drop(1).collectLatest {
|
||||||
|
if (it) onDismissRequest()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
val settleToDismiss: (velocity: Float) -> Unit = {
|
||||||
|
scope.launch { sheetState.settle(it) }.invokeOnCompletion {
|
||||||
|
if (!sheetState.isVisible) onDismissRequest()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
val popupOnDismissRequest: () -> Unit = {
|
||||||
|
if (sheetState.currentValue == SheetValue.Expanded && sheetState.hasPartiallyExpandedState) {
|
||||||
|
scope.launch { sheetState.partialExpand() }
|
||||||
|
} else { // Is expanded without collapsed state or is collapsed.
|
||||||
|
scope.launch { sheetState.hide() }.invokeOnCompletion { onDismissRequest() }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
ModalBottomSheetPopup(
|
||||||
|
properties = properties,
|
||||||
|
onDismissRequest = popupOnDismissRequest,
|
||||||
|
windowInsets = windowInsets,
|
||||||
|
) {
|
||||||
|
val configuration = LocalConfiguration.current
|
||||||
|
val widthDp = configuration.screenWidthDp.dp
|
||||||
|
val height = configuration.screenHeightDp.dp
|
||||||
|
val predictiveState by animateFloatMergeOneWayPredictiveBackAsState(true) {
|
||||||
|
sheetState.hide()
|
||||||
|
onDismissRequest()
|
||||||
|
}
|
||||||
|
val predictiveModifier = Modifier.graphicsLayer {
|
||||||
|
val scale = lerp(1f, 0.90f, predictiveState.absoluteValue)
|
||||||
|
scaleX = scale
|
||||||
|
scaleY = scale
|
||||||
|
}.offset {
|
||||||
|
val ofsY = lerp(0f, height.toPx() * 0.0625f, predictiveState.absoluteValue).roundToInt()
|
||||||
|
val ofsX = lerp(0f, widthDp.toPx() * 0.025f, predictiveState).roundToInt()
|
||||||
|
IntOffset(ofsX, ofsY)
|
||||||
|
}
|
||||||
|
BoxWithConstraints(Modifier.fillMaxSize()) {
|
||||||
|
val fullHeight = constraints.maxHeight
|
||||||
|
Scrim(
|
||||||
|
color = scrimColor,
|
||||||
|
onDismissRequest = animateToDismiss,
|
||||||
|
visible = sheetState.targetValue != SheetValue.Hidden,
|
||||||
|
)
|
||||||
|
Surface(
|
||||||
|
modifier = modifier
|
||||||
|
.widthIn(max = sheetMaxWidth)
|
||||||
|
.fillMaxWidth()
|
||||||
|
.align(Alignment.TopCenter)
|
||||||
|
.offset {
|
||||||
|
IntOffset(
|
||||||
|
0,
|
||||||
|
sheetState
|
||||||
|
.requireOffset()
|
||||||
|
.toInt(),
|
||||||
|
)
|
||||||
|
} then predictiveModifier
|
||||||
|
.nestedScroll(
|
||||||
|
remember(sheetState) {
|
||||||
|
ConsumeSwipeWithinBottomSheetBoundsNestedScrollConnection(
|
||||||
|
sheetState = sheetState,
|
||||||
|
orientation = Orientation.Vertical,
|
||||||
|
onFling = settleToDismiss,
|
||||||
|
)
|
||||||
|
},
|
||||||
|
)
|
||||||
|
.anchoredDraggable(
|
||||||
|
state = sheetState.anchoredDraggableState,
|
||||||
|
orientation = Orientation.Vertical,
|
||||||
|
enabled = sheetState.isVisible,
|
||||||
|
startDragImmediately = sheetState.anchoredDraggableState.isAnimationRunning,
|
||||||
|
)
|
||||||
|
.modalBottomSheetAnchors(
|
||||||
|
sheetState = sheetState,
|
||||||
|
fullHeight = fullHeight.toFloat(),
|
||||||
|
),
|
||||||
|
shape = shape,
|
||||||
|
color = containerColor,
|
||||||
|
contentColor = contentColor,
|
||||||
|
tonalElevation = tonalElevation,
|
||||||
|
) {
|
||||||
|
Column(Modifier.fillMaxWidth()) {
|
||||||
|
if (dragHandle != null) {
|
||||||
|
Box(Modifier.align(Alignment.CenterHorizontally)) {
|
||||||
|
dragHandle()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
content()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (sheetState.hasExpandedState) {
|
||||||
|
LaunchedEffect(sheetState) {
|
||||||
|
sheetState.show()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@OptIn(ExperimentalMaterial3Api::class)
|
||||||
|
internal fun ConsumeSwipeWithinBottomSheetBoundsNestedScrollConnection(
|
||||||
|
sheetState: SheetState2,
|
||||||
|
orientation: Orientation,
|
||||||
|
onFling: (velocity: Float) -> Unit,
|
||||||
|
): NestedScrollConnection = object : NestedScrollConnection {
|
||||||
|
override fun onPreScroll(available: Offset, source: NestedScrollSource): Offset {
|
||||||
|
val delta = available.toFloat()
|
||||||
|
return if (delta < 0 && source == NestedScrollSource.Drag) {
|
||||||
|
sheetState.anchoredDraggableState.dispatchRawDelta(delta).toOffset()
|
||||||
|
} else {
|
||||||
|
Offset.Zero
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun onPostScroll(
|
||||||
|
consumed: Offset,
|
||||||
|
available: Offset,
|
||||||
|
source: NestedScrollSource,
|
||||||
|
): Offset {
|
||||||
|
return if (source == NestedScrollSource.Drag) {
|
||||||
|
sheetState.anchoredDraggableState.dispatchRawDelta(available.toFloat()).toOffset()
|
||||||
|
} else {
|
||||||
|
Offset.Zero
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
override suspend fun onPreFling(available: Velocity): Velocity {
|
||||||
|
val toFling = available.toFloat()
|
||||||
|
val currentOffset = sheetState.requireOffset()
|
||||||
|
val minAnchor = sheetState.anchoredDraggableState.anchors.minAnchor()
|
||||||
|
return if (toFling < 0 && currentOffset > minAnchor) {
|
||||||
|
onFling(toFling)
|
||||||
|
// since we go to the anchor with tween settling, consume all for the best UX
|
||||||
|
available
|
||||||
|
} else {
|
||||||
|
Velocity.Zero
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
override suspend fun onPostFling(consumed: Velocity, available: Velocity): Velocity {
|
||||||
|
onFling(available.toFloat())
|
||||||
|
return available
|
||||||
|
}
|
||||||
|
|
||||||
|
private fun Float.toOffset(): Offset = Offset(
|
||||||
|
x = if (orientation == Orientation.Horizontal) this else 0f,
|
||||||
|
y = if (orientation == Orientation.Vertical) this else 0f,
|
||||||
|
)
|
||||||
|
|
||||||
|
@JvmName("velocityToFloat")
|
||||||
|
private fun Velocity.toFloat() = if (orientation == Orientation.Horizontal) x else y
|
||||||
|
|
||||||
|
@JvmName("offsetToFloat")
|
||||||
|
private fun Offset.toFloat(): Float = if (orientation == Orientation.Horizontal) x else y
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Properties used to customize the behavior of a [ModalBottomSheetFix].
|
||||||
|
*
|
||||||
|
* @param securePolicy Policy for setting [WindowManager.LayoutParams.FLAG_SECURE] on the bottom
|
||||||
|
* sheet's window.
|
||||||
|
* @param isFocusable Whether the modal bottom sheet is focusable. When true,
|
||||||
|
* the modal bottom sheet will receive IME events and key presses, such as when
|
||||||
|
* the back button is pressed.
|
||||||
|
* @param shouldDismissOnBackPress Whether the modal bottom sheet can be dismissed by pressing
|
||||||
|
* the back button. If true, pressing the back button will call onDismissRequest.
|
||||||
|
* Note that [isFocusable] must be set to true in order to receive key events such as
|
||||||
|
* the back button - if the modal bottom sheet is not focusable then this property does nothing.
|
||||||
|
*/
|
||||||
|
@ExperimentalMaterial3Api
|
||||||
|
class ModalBottomSheetProperties2(
|
||||||
|
val securePolicy: SecureFlagPolicy,
|
||||||
|
val isFocusable: Boolean,
|
||||||
|
val shouldDismissOnBackPress: Boolean,
|
||||||
|
) {
|
||||||
|
override fun equals(other: Any?): Boolean {
|
||||||
|
if (this === other) return true
|
||||||
|
if (other !is ModalBottomSheetProperties2) return false
|
||||||
|
|
||||||
|
if (securePolicy != other.securePolicy) return false
|
||||||
|
if (isFocusable != other.isFocusable) return false
|
||||||
|
if (shouldDismissOnBackPress != other.shouldDismissOnBackPress) return false
|
||||||
|
|
||||||
|
return true
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun hashCode(): Int {
|
||||||
|
var result = securePolicy.hashCode()
|
||||||
|
result = 31 * result + isFocusable.hashCode()
|
||||||
|
result = 31 * result + shouldDismissOnBackPress.hashCode()
|
||||||
|
return result
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Default values for [ModalBottomSheetFix]
|
||||||
|
*/
|
||||||
|
@Immutable
|
||||||
|
@ExperimentalMaterial3Api
|
||||||
|
object ModalBottomSheetDefaults2 {
|
||||||
|
/**
|
||||||
|
* Properties used to customize the behavior of a [ModalBottomSheetFix].
|
||||||
|
*
|
||||||
|
* @param securePolicy Policy for setting [WindowManager.LayoutParams.FLAG_SECURE] on the bottom
|
||||||
|
* sheet's window.
|
||||||
|
* @param isFocusable Whether the modal bottom sheet is focusable. When true,
|
||||||
|
* the modal bottom sheet will receive IME events and key presses, such as when
|
||||||
|
* the back button is pressed.
|
||||||
|
* @param shouldDismissOnBackPress Whether the modal bottom sheet can be dismissed by pressing
|
||||||
|
* the back button. If true, pressing the back button will call onDismissRequest.
|
||||||
|
* Note that [isFocusable] must be set to true in order to receive key events such as
|
||||||
|
* the back button - if the modal bottom sheet is not focusable then this property does nothing.
|
||||||
|
*/
|
||||||
|
fun properties(
|
||||||
|
securePolicy: SecureFlagPolicy = SecureFlagPolicy.Inherit,
|
||||||
|
isFocusable: Boolean = true,
|
||||||
|
shouldDismissOnBackPress: Boolean = true,
|
||||||
|
) = ModalBottomSheetProperties2(securePolicy, isFocusable, shouldDismissOnBackPress)
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Create and [remember] a [SheetState2] for [ModalBottomSheetFix].
|
||||||
|
*
|
||||||
|
* @param skipPartiallyExpanded Whether the partially expanded state, if the sheet is tall enough,
|
||||||
|
* should be skipped. If true, the sheet will always expand to the [Expanded] state and move to the
|
||||||
|
* [Hidden] state when hiding the sheet, either programmatically or by user interaction.
|
||||||
|
* @param confirmValueChange Optional callback invoked to confirm or veto a pending state change.
|
||||||
|
*/
|
||||||
|
@Composable
|
||||||
|
@ExperimentalMaterial3Api
|
||||||
|
fun rememberModalBottomSheetState(
|
||||||
|
skipPartiallyExpanded: Boolean = false,
|
||||||
|
confirmValueChange: (SheetValue) -> Boolean = { true },
|
||||||
|
) = rememberSheetState(skipPartiallyExpanded, confirmValueChange, SheetValue.Hidden)
|
||||||
|
|
||||||
|
@Composable
|
||||||
|
@ExperimentalMaterial3Api
|
||||||
|
internal fun rememberSheetState(
|
||||||
|
skipPartiallyExpanded: Boolean = false,
|
||||||
|
confirmValueChange: (SheetValue) -> Boolean = { true },
|
||||||
|
initialValue: SheetValue = SheetValue.Hidden,
|
||||||
|
skipHiddenState: Boolean = false,
|
||||||
|
): SheetState2 {
|
||||||
|
val density = LocalDensity.current
|
||||||
|
return rememberSaveable(
|
||||||
|
skipPartiallyExpanded,
|
||||||
|
confirmValueChange,
|
||||||
|
saver = SheetState2.Saver(
|
||||||
|
skipPartiallyExpanded = skipPartiallyExpanded,
|
||||||
|
confirmValueChange = confirmValueChange,
|
||||||
|
density = density,
|
||||||
|
),
|
||||||
|
) {
|
||||||
|
SheetState2(
|
||||||
|
skipPartiallyExpanded,
|
||||||
|
density,
|
||||||
|
initialValue,
|
||||||
|
confirmValueChange,
|
||||||
|
skipHiddenState,
|
||||||
|
)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@Composable
|
||||||
|
private fun Scrim(
|
||||||
|
color: Color,
|
||||||
|
onDismissRequest: () -> Unit,
|
||||||
|
visible: Boolean,
|
||||||
|
) {
|
||||||
|
if (color.isSpecified) {
|
||||||
|
val alpha by animateFloatAsState(
|
||||||
|
targetValue = if (visible) 1f else 0f,
|
||||||
|
animationSpec = TweenSpec(),
|
||||||
|
label = "scrim",
|
||||||
|
)
|
||||||
|
val dismissSheet = if (visible) {
|
||||||
|
Modifier
|
||||||
|
.pointerInput(onDismissRequest) {
|
||||||
|
detectTapGestures {
|
||||||
|
onDismissRequest()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
.clearAndSetSemantics {}
|
||||||
|
} else {
|
||||||
|
Modifier
|
||||||
|
}
|
||||||
|
Canvas(
|
||||||
|
Modifier
|
||||||
|
.fillMaxSize()
|
||||||
|
.then(dismissSheet),
|
||||||
|
) {
|
||||||
|
drawRect(color = color, alpha = alpha)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@ExperimentalMaterial3Api
|
||||||
|
private fun Modifier.modalBottomSheetAnchors(
|
||||||
|
sheetState: SheetState2,
|
||||||
|
fullHeight: Float,
|
||||||
|
) = onSizeChanged { sheetSize ->
|
||||||
|
|
||||||
|
val newAnchors = DraggableAnchors {
|
||||||
|
SheetValue.Hidden at fullHeight
|
||||||
|
if (sheetSize.height > (fullHeight / 2) && !sheetState.skipPartiallyExpanded) {
|
||||||
|
SheetValue.PartiallyExpanded at fullHeight / 2f
|
||||||
|
}
|
||||||
|
if (sheetSize.height != 0) {
|
||||||
|
SheetValue.Expanded at max(0f, fullHeight - sheetSize.height)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
val newTarget = when (sheetState.anchoredDraggableState.targetValue) {
|
||||||
|
SheetValue.Hidden -> SheetValue.Hidden
|
||||||
|
SheetValue.PartiallyExpanded, SheetValue.Expanded -> {
|
||||||
|
val hasPartiallyExpandedState = newAnchors.hasAnchorFor(SheetValue.PartiallyExpanded)
|
||||||
|
val newTarget = if (hasPartiallyExpandedState) {
|
||||||
|
SheetValue.PartiallyExpanded
|
||||||
|
} else if (newAnchors.hasAnchorFor(SheetValue.Expanded)) SheetValue.Expanded else SheetValue.Hidden
|
||||||
|
newTarget
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
sheetState.anchoredDraggableState.updateAnchors(newAnchors, newTarget)
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Popup specific for modal bottom sheet.
|
||||||
|
*/
|
||||||
|
@OptIn(ExperimentalMaterial3Api::class)
|
||||||
|
@Composable
|
||||||
|
internal fun ModalBottomSheetPopup(
|
||||||
|
properties: ModalBottomSheetProperties2,
|
||||||
|
onDismissRequest: () -> Unit,
|
||||||
|
windowInsets: WindowInsets,
|
||||||
|
content: @Composable () -> Unit,
|
||||||
|
) {
|
||||||
|
val view = LocalView.current
|
||||||
|
val id = rememberSaveable { UUID.randomUUID() }
|
||||||
|
val parentComposition = rememberCompositionContext()
|
||||||
|
val currentContent by rememberUpdatedState(content)
|
||||||
|
val layoutDirection = LocalLayoutDirection.current
|
||||||
|
val configuration = LocalConfiguration.current
|
||||||
|
val modalBottomSheetWindow = remember(configuration) {
|
||||||
|
ModalBottomSheetWindow2(
|
||||||
|
properties = properties,
|
||||||
|
onDismissRequest = onDismissRequest,
|
||||||
|
composeView = view,
|
||||||
|
saveId = id,
|
||||||
|
).apply {
|
||||||
|
setCustomContent(
|
||||||
|
parent = parentComposition,
|
||||||
|
content = {
|
||||||
|
Box(
|
||||||
|
Modifier
|
||||||
|
.semantics { this.popup() }
|
||||||
|
.windowInsetsPadding(windowInsets)
|
||||||
|
.then(
|
||||||
|
// TODO(b/290893168): Figure out a solution for APIs < 30.
|
||||||
|
if (Build.VERSION.SDK_INT >= 33) {
|
||||||
|
Modifier.imePadding()
|
||||||
|
} else {
|
||||||
|
Modifier
|
||||||
|
},
|
||||||
|
),
|
||||||
|
) {
|
||||||
|
currentContent()
|
||||||
|
}
|
||||||
|
},
|
||||||
|
)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
DisposableEffect(modalBottomSheetWindow) {
|
||||||
|
modalBottomSheetWindow.show()
|
||||||
|
modalBottomSheetWindow.superSetLayoutDirection(layoutDirection)
|
||||||
|
onDispose {
|
||||||
|
modalBottomSheetWindow.disposeComposition()
|
||||||
|
modalBottomSheetWindow.dismiss()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/** Custom compose view for [ModalBottomSheetFix] */
|
||||||
|
@SuppressLint("ViewConstructor")
|
||||||
|
@OptIn(ExperimentalMaterial3Api::class)
|
||||||
|
private class ModalBottomSheetWindow2(
|
||||||
|
private val properties: ModalBottomSheetProperties2,
|
||||||
|
private var onDismissRequest: () -> Unit,
|
||||||
|
private val composeView: View,
|
||||||
|
saveId: UUID,
|
||||||
|
) : AbstractComposeView(composeView.context),
|
||||||
|
ViewTreeObserver.OnGlobalLayoutListener,
|
||||||
|
ViewRootForInspector,
|
||||||
|
OnBackPressedDispatcherOwner {
|
||||||
|
|
||||||
|
init {
|
||||||
|
id = android.R.id.content
|
||||||
|
// Set up view owners
|
||||||
|
setViewTreeLifecycleOwner(composeView.findViewTreeLifecycleOwner())
|
||||||
|
setViewTreeViewModelStoreOwner(composeView.findViewTreeViewModelStoreOwner())
|
||||||
|
setViewTreeSavedStateRegistryOwner(composeView.findViewTreeSavedStateRegistryOwner())
|
||||||
|
setTag(androidx.compose.ui.R.id.compose_view_saveable_id_tag, "Popup:$saveId")
|
||||||
|
// Enable children to draw their shadow by not clipping them
|
||||||
|
clipChildren = false
|
||||||
|
}
|
||||||
|
|
||||||
|
override val lifecycle = composeView.findViewTreeLifecycleOwner()!!.lifecycle
|
||||||
|
override val onBackPressedDispatcher = OnBackPressedDispatcher {
|
||||||
|
onDismissRequest()
|
||||||
|
}
|
||||||
|
|
||||||
|
private val windowManager =
|
||||||
|
composeView.context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
|
||||||
|
|
||||||
|
private val displayWidth: Int
|
||||||
|
get() = context.resources.displayMetrics.widthPixels
|
||||||
|
|
||||||
|
private val params: WindowManager.LayoutParams =
|
||||||
|
WindowManager.LayoutParams().apply {
|
||||||
|
// Position bottom sheet from the bottom of the screen
|
||||||
|
gravity = Gravity.BOTTOM or Gravity.START
|
||||||
|
// Application panel window
|
||||||
|
type = WindowManager.LayoutParams.TYPE_APPLICATION_PANEL
|
||||||
|
// Fill up the entire app view
|
||||||
|
width = displayWidth
|
||||||
|
height = WindowManager.LayoutParams.MATCH_PARENT
|
||||||
|
|
||||||
|
// Format of screen pixels
|
||||||
|
format = PixelFormat.TRANSLUCENT
|
||||||
|
// Title used as fallback for a11y services
|
||||||
|
// TODO: Provide bottom sheet window resource
|
||||||
|
title = composeView.context.resources.getString(
|
||||||
|
androidx.compose.ui.R.string.default_popup_window_title,
|
||||||
|
)
|
||||||
|
// Get the Window token from the parent view
|
||||||
|
token = composeView.applicationWindowToken
|
||||||
|
|
||||||
|
// Flags specific to modal bottom sheet.
|
||||||
|
flags = flags and (
|
||||||
|
WindowManager.LayoutParams.FLAG_IGNORE_CHEEK_PRESSES or
|
||||||
|
WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM
|
||||||
|
).inv()
|
||||||
|
|
||||||
|
flags = flags or WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
|
||||||
|
|
||||||
|
// Security flag
|
||||||
|
val secureFlagEnabled =
|
||||||
|
properties.securePolicy.shouldApplySecureFlag(composeView.isFlagSecureEnabled())
|
||||||
|
if (secureFlagEnabled) {
|
||||||
|
flags = flags or WindowManager.LayoutParams.FLAG_SECURE
|
||||||
|
} else {
|
||||||
|
flags = flags and (WindowManager.LayoutParams.FLAG_SECURE.inv())
|
||||||
|
}
|
||||||
|
|
||||||
|
// Focusable
|
||||||
|
if (!properties.isFocusable) {
|
||||||
|
flags = flags or WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
|
||||||
|
} else {
|
||||||
|
flags = flags and (WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE.inv())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
private var content: @Composable () -> Unit by mutableStateOf({})
|
||||||
|
|
||||||
|
override var shouldCreateCompositionOnAttachedToWindow: Boolean = false
|
||||||
|
private set
|
||||||
|
|
||||||
|
@Composable
|
||||||
|
override fun Content() {
|
||||||
|
CompositionLocalProvider(LocalOnBackPressedDispatcherOwner provides this) {
|
||||||
|
content()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fun setCustomContent(
|
||||||
|
parent: CompositionContext? = null,
|
||||||
|
content: @Composable () -> Unit,
|
||||||
|
) {
|
||||||
|
parent?.let { setParentCompositionContext(it) }
|
||||||
|
this.content = content
|
||||||
|
shouldCreateCompositionOnAttachedToWindow = true
|
||||||
|
}
|
||||||
|
|
||||||
|
fun show() {
|
||||||
|
windowManager.addView(this, params)
|
||||||
|
if (isAtLeastT) {
|
||||||
|
onBackPressedDispatcher.setOnBackInvokedDispatcher(findOnBackInvokedDispatcher()!!)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fun dismiss() {
|
||||||
|
setViewTreeLifecycleOwner(null)
|
||||||
|
setViewTreeSavedStateRegistryOwner(null)
|
||||||
|
composeView.viewTreeObserver.removeOnGlobalLayoutListener(this)
|
||||||
|
windowManager.removeViewImmediate(this)
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun onGlobalLayout() {
|
||||||
|
// No-op
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun setLayoutDirection(layoutDirection: Int) {
|
||||||
|
// Do nothing. ViewRootImpl will call this method attempting to set the layout direction
|
||||||
|
// from the context's locale, but we have one already from the parent composition.
|
||||||
|
}
|
||||||
|
|
||||||
|
// Sets the "real" layout direction for our content that we obtain from the parent composition.
|
||||||
|
fun superSetLayoutDirection(layoutDirection: LayoutDirection) {
|
||||||
|
val direction = when (layoutDirection) {
|
||||||
|
LayoutDirection.Ltr -> android.util.LayoutDirection.LTR
|
||||||
|
LayoutDirection.Rtl -> android.util.LayoutDirection.RTL
|
||||||
|
}
|
||||||
|
super.setLayoutDirection(direction)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Taken from AndroidPopup.android.kt
|
||||||
|
private fun View.isFlagSecureEnabled(): Boolean {
|
||||||
|
val windowParams = rootView.layoutParams as? WindowManager.LayoutParams
|
||||||
|
if (windowParams != null) {
|
||||||
|
return (windowParams.flags and WindowManager.LayoutParams.FLAG_SECURE) != 0
|
||||||
|
}
|
||||||
|
return false
|
||||||
|
}
|
||||||
|
|
||||||
|
// Taken from AndroidPopup.android.kt
|
||||||
|
private fun SecureFlagPolicy.shouldApplySecureFlag(isSecureFlagSetOnParent: Boolean): Boolean {
|
||||||
|
return when (this) {
|
||||||
|
SecureFlagPolicy.SecureOff -> false
|
||||||
|
SecureFlagPolicy.SecureOn -> true
|
||||||
|
SecureFlagPolicy.Inherit -> isSecureFlagSetOnParent
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -49,7 +49,7 @@ import androidx.compose.material3.FilledTonalButton
|
|||||||
import androidx.compose.material3.Icon
|
import androidx.compose.material3.Icon
|
||||||
import androidx.compose.material3.IconButton
|
import androidx.compose.material3.IconButton
|
||||||
import androidx.compose.material3.LargeTopAppBar
|
import androidx.compose.material3.LargeTopAppBar
|
||||||
import androidx.compose.material3.ModalBottomSheet
|
import androidx.compose.material3.ModalBottomSheetFix
|
||||||
import androidx.compose.material3.Scaffold
|
import androidx.compose.material3.Scaffold
|
||||||
import androidx.compose.material3.Surface
|
import androidx.compose.material3.Surface
|
||||||
import androidx.compose.material3.Text
|
import androidx.compose.material3.Text
|
||||||
@@ -948,7 +948,7 @@ fun GalleryDetailScreen(args: GalleryDetailScreenArgs, navigator: DestinationsNa
|
|||||||
var showBottomSheet by remember { mutableStateOf(false) }
|
var showBottomSheet by remember { mutableStateOf(false) }
|
||||||
|
|
||||||
if (showBottomSheet && galleryDetail != null) {
|
if (showBottomSheet && galleryDetail != null) {
|
||||||
ModalBottomSheet(
|
ModalBottomSheetFix(
|
||||||
onDismissRequest = { showBottomSheet = false },
|
onDismissRequest = { showBottomSheet = false },
|
||||||
windowInsets = WindowInsets(0, 0, 0, 0),
|
windowInsets = WindowInsets(0, 0, 0, 0),
|
||||||
) {
|
) {
|
||||||
|
|||||||
Reference in new issue
Block a user