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app/src/main/kotlin/com/wire/android/ui/common/snackbar/SwipeDismissSnackbar.kt
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app/src/main/kotlin/com/wire/android/ui/common/snackbar/SwipeableSnackbar.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| /* | ||
| * Wire | ||
| * Copyright (C) 2023 Wire Swiss GmbH | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see http://www.gnu.org/licenses/. | ||
| */ | ||
|
|
||
| import androidx.compose.animation.core.SpringSpec | ||
| import androidx.compose.foundation.ExperimentalFoundationApi | ||
| import androidx.compose.foundation.gestures.AnchoredDraggableState | ||
| import androidx.compose.foundation.gestures.DraggableAnchors | ||
| import androidx.compose.foundation.gestures.Orientation | ||
| import androidx.compose.foundation.gestures.anchoredDraggable | ||
| import androidx.compose.foundation.layout.offset | ||
| import androidx.compose.material3.Snackbar | ||
| import androidx.compose.material3.SnackbarData | ||
| import androidx.compose.material3.SnackbarHostState | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.LaunchedEffect | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.platform.LocalConfiguration | ||
| import androidx.compose.ui.platform.LocalDensity | ||
| import androidx.compose.ui.unit.IntOffset | ||
| import androidx.compose.ui.unit.dp | ||
| import kotlin.math.roundToInt | ||
|
|
||
| /** | ||
| * A swipeable [Snackbar] that allows users to manually dismiss it by dragging. | ||
| * | ||
| * This composable function extends the default Snackbar behavior by adding a draggable gesture. | ||
| * The Snackbar can be swiped horizontally to dismiss it, based on predefined positional and velocity thresholds. | ||
| * | ||
| * @param hostState The state of the [SnackbarHostState] this Snackbar is associated with. This allows | ||
| * the Snackbar to notify its host when it's dismissed. | ||
| * @param data The [SnackbarData] containing the message and optional action to display on the Snackbar. | ||
| * @param onDismiss An optional callback function to be executed when the Snackbar is swiped away. | ||
| * The default behavior will dismiss the current Snackbar from the [hostState]. | ||
| * @see Snackbar | ||
| * @see SnackbarData | ||
| * @see SnackbarHostState | ||
| */ | ||
| @OptIn(ExperimentalFoundationApi::class) | ||
| @Composable | ||
| fun SwipeableSnackbar( | ||
| hostState: SnackbarHostState, | ||
| data: SnackbarData, | ||
| onDismiss: () -> Unit = { hostState.currentSnackbarData?.dismiss() }, | ||
| ) { | ||
| val density = LocalDensity.current | ||
| val configuration = LocalConfiguration.current | ||
|
|
||
| val currentScreenWidth = with(density) { configuration.screenWidthDp.dp.toPx() } | ||
|
|
||
| val anchors = DraggableAnchors { | ||
| SnackBarState.Visible at 0f | ||
| SnackBarState.Dismissed at currentScreenWidth | ||
| } | ||
|
|
||
| // Determines how far the user needs to drag (as a fraction of total distance) for an action to be triggered. | ||
| // In this example, the Snackbar will trigger an action if dragged to half (0.5) of its width. | ||
| val positionalThreshold: (Float) -> Float = { distance -> distance * 0.5f } | ||
|
|
||
| // Determines the minimum velocity (in pixels per second) with which the user needs to drag for an action to be triggered, | ||
| // even if the positional threshold hasn't been reached. | ||
| // Here, it's set to 125 device-independent pixels per second. | ||
| val velocityThreshold: () -> Float = with(density) { { 125.dp.toPx() } } | ||
|
|
||
| val state = remember { | ||
| AnchoredDraggableState( | ||
| initialValue = SnackBarState.Visible, | ||
| anchors = anchors, | ||
| positionalThreshold = positionalThreshold, | ||
| velocityThreshold = velocityThreshold, | ||
| animationSpec = SpringSpec(), | ||
| confirmValueChange = { true } | ||
| ) | ||
| } | ||
|
|
||
| LaunchedEffect(state.currentValue) { | ||
| if (state.currentValue == SnackBarState.Dismissed) { | ||
| onDismiss() | ||
| } | ||
| } | ||
|
|
||
| Snackbar( | ||
| snackbarData = data, | ||
| modifier = Modifier | ||
| .anchoredDraggable( | ||
| state = state, | ||
| orientation = Orientation.Horizontal | ||
| ) | ||
| .offset { | ||
| IntOffset( | ||
| state | ||
| .requireOffset() | ||
| .roundToInt(), 0 | ||
| ) | ||
| }) | ||
| } | ||
|
|
||
| private enum class SnackBarState { Visible, Dismissed } |
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