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feat(ui): long press on an item to show context menu (#613)
* feat(ui): long press on an item to show context menu * feat(ui): add handy enter-exit transition to drop down menu * feat(ui): implement share action * feat(ui): polish the enter/exit transition * fix(ui): RTL walkaround * feat(ui): dropdown menu style tweaks * feat(ui): mark above as read & mark below as read * feat(fever): update read status by id set * fix: use `batchMarkAsRead` * fix: disable `onMarkAboveAsRead` for the first item
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app/src/main/java/me/ash/reader/ui/component/menu/AnimatedDropdownMenu.kt
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|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| package me.ash.reader.ui.component.menu | ||
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| import androidx.compose.animation.core.MutableTransitionState | ||
| import androidx.compose.foundation.ScrollState | ||
| import androidx.compose.foundation.layout.ColumnScope | ||
| import androidx.compose.foundation.rememberScrollState | ||
| import androidx.compose.material3.DropdownMenu | ||
| import androidx.compose.material3.DropdownMenuItem | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.platform.LocalDensity | ||
| import androidx.compose.ui.unit.DpOffset | ||
| import androidx.compose.ui.unit.dp | ||
| import androidx.compose.ui.window.Popup | ||
| import androidx.compose.ui.window.PopupProperties | ||
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|
||
| /** | ||
| * <a href="https://m3.material.io/components/menus/overview" class="external" target="_blank">Material Design dropdown menu</a>. | ||
| * | ||
| * Menus display a list of choices on a temporary surface. They appear when users interact with a | ||
| * button, action, or other control. | ||
| * | ||
| *  | ||
| * | ||
| * A [DropdownMenu] behaves similarly to a [Popup], and will use the position of the parent layout | ||
| * to position itself on screen. Commonly a [DropdownMenu] will be placed in a [Box] with a sibling | ||
| * that will be used as the 'anchor'. Note that a [DropdownMenu] by itself will not take up any | ||
| * space in a layout, as the menu is displayed in a separate window, on top of other content. | ||
| * | ||
| * The [content] of a [DropdownMenu] will typically be [DropdownMenuItem]s, as well as custom | ||
| * content. Using [DropdownMenuItem]s will result in a menu that matches the Material | ||
| * specification for menus. Also note that the [content] is placed inside a scrollable [Column], | ||
| * so using a [LazyColumn] as the root layout inside [content] is unsupported. | ||
| * | ||
| * [onDismissRequest] will be called when the menu should close - for example when there is a | ||
| * tap outside the menu, or when the back key is pressed. | ||
| * | ||
| * [DropdownMenu] changes its positioning depending on the available space, always trying to be | ||
| * fully visible. Depending on layout direction, first it will try to align its start to the start | ||
| * of its parent, then its end to the end of its parent, and then to the edge of the window. | ||
| * Vertically, it will try to align its top to the bottom of its parent, then its bottom to top of | ||
| * its parent, and then to the edge of the window. | ||
| * | ||
| * An [offset] can be provided to adjust the positioning of the menu for cases when the layout | ||
| * bounds of its parent do not coincide with its visual bounds. | ||
| * | ||
| * | ||
| * @param expanded whether the menu is expanded or not | ||
| * @param onDismissRequest called when the user requests to dismiss the menu, such as by tapping | ||
| * outside the menu's bounds | ||
| * @param modifier [Modifier] to be applied to the menu's content | ||
| * @param offset [DpOffset] from the original position of the menu. The offset respects the | ||
| * [LayoutDirection], so the offset's x position will be added in LTR and subtracted in RTL. | ||
| * @param scrollState a [ScrollState] to used by the menu's content for items vertical scrolling | ||
| * @param properties [PopupProperties] for further customization of this popup's behavior | ||
| * @param content the content of this dropdown menu, typically a [DropdownMenuItem] | ||
| */ | ||
| @Composable | ||
| fun AnimatedDropdownMenu( | ||
| expanded: Boolean, | ||
| onDismissRequest: () -> Unit, | ||
| modifier: Modifier = Modifier, | ||
| offset: DpOffset = DpOffset(0.dp, 0.dp), | ||
| scrollState: ScrollState = rememberScrollState(), | ||
| properties: PopupProperties = PopupProperties(focusable = true), | ||
| content: @Composable ColumnScope.() -> Unit | ||
| ) { | ||
| val expandedState = remember { MutableTransitionState(false) } | ||
| expandedState.targetState = expanded | ||
|
|
||
| if (expandedState.currentState || expandedState.targetState || !expandedState.isIdle) { | ||
| val density = LocalDensity.current | ||
| val popupPositionProvider = remember(offset, density) { | ||
| DropdownMenuPositionProvider( | ||
| offset, | ||
| density | ||
| ) | ||
| } | ||
| Popup( | ||
| onDismissRequest = onDismissRequest, | ||
| popupPositionProvider = popupPositionProvider, | ||
| properties = properties | ||
| ) { | ||
| DropdownMenuContent( | ||
| expandedState = expandedState, | ||
| scrollState = scrollState, | ||
| modifier = modifier, | ||
| content = content | ||
| ) | ||
| } | ||
| } | ||
| } |
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