Node / meshtastic / Meshtastic-Android / files / androidApp / src / google / kotlin / org / meshtastic / app / map / component / NodeClusterMarkers.kt

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T8b949e/*

* Copyright (c) 2026 Meshtastic LLC

*

* 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 <https://www.gnu.org/licenses/>.

*/

Tff7b72package T7ee787org.meshtastic.app.map.component

Tff7b72import T7ee787android.content.Context

Tff7b72import T7ee787androidx.compose.runtime.Composable

Tff7b72import T7ee787androidx.compose.runtime.MutableState

Tff7b72import T7ee787androidx.compose.runtime.SideEffect

Tff7b72import T7ee787androidx.compose.runtime.getValue

Tff7b72import T7ee787androidx.compose.runtime.mutableStateOf

Tff7b72import T7ee787androidx.compose.runtime.remember

Tff7b72import T7ee787androidx.compose.ui.graphics.Color

Tff7b72import T7ee787androidx.compose.ui.platform.LocalContext

Tff7b72import T7ee787androidx.compose.ui.platform.LocalDensity

Tff7b72import T7ee787com.google.android.gms.maps.GoogleMap

Tff7b72import T7ee787com.google.android.gms.maps.model.Marker

Tff7b72import T7ee787com.google.android.gms.maps.model.MarkerOptions

Tff7b72import T7ee787com.google.maps.android.clustering.Cluster

Tff7b72import T7ee787com.google.maps.android.clustering.ClusterManager

Tff7b72import T7ee787com.google.maps.android.clustering.view.DefaultClusterRenderer

Tff7b72import T7ee787com.google.maps.android.compose.Circle

Tff7b72import T7ee787com.google.maps.android.compose.MapEffect

Tff7b72import T7ee787com.google.maps.android.compose.MapsComposeExperimentalApi

Tff7b72import T7ee787com.google.maps.android.compose.clustering.Clustering

Tff7b72import T7ee787com.google.maps.android.compose.clustering.rememberClusterManager

Tff7b72import T7ee787org.meshtastic.app.map.model.NodeClusterItem

Tff7b72import T7ee787org.meshtastic.feature.map.BaseMapViewModel

Tff7b72private Tff7b72const Tff7b72val Te6edf3MIN_CLUSTER_SIZE Tff7b72= T79c0ff1T79c0ff0

T8b949e// Match the bottom-center anchor maps-compose used for the old `clusterItemContent` chip

T8b949e// (clusterItemContentAnchor defaults to Offset(0.5f, 1.0f)), so chips keep sitting on the node coordinate.

Tff7b72private Tff7b72const Tff7b72val Te6edf3CHIP_ANCHOR_U Tff7b72= T79c0ff0.5f

Tff7b72private Tff7b72const Tff7b72val Te6edf3CHIP_ANCHOR_V Tff7b72= T79c0ff1.0f

Tf0883e@OptInTb4b4b4(Te6edf3MapsComposeExperimentalApiTff7b72::Te6edf3classTb4b4b4)

Tf0883e@Composable

Tff7b72fun Td2a8ffNodeClusterMarkersTb4b4b4(

Te6edf3nodeClusterItemsTb4b4b4: Te6edf3ListTff7b72<Te6edf3NodeClusterItemTff7b72>Tb4b4b4,

Te6edf3mapFilterStateTb4b4b4: Te6edf3BaseMapViewModelTb4b4b4.Te6edf3MapFilterStateTb4b4b4,

Te6edf3navigateToNodeDetailsTb4b4b4: Tb4b4b4(Tffa657IntTb4b4b4) Tff7b72-Tff7b72> Tffa657UnitTb4b4b4,

Te6edf3onClusterClickTb4b4b4: Tb4b4b4(Te6edf3ClusterTff7b72<Te6edf3NodeClusterItemTff7b72>Tb4b4b4) Tff7b72-Tff7b72> Tffa657BooleanTb4b4b4,

Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3context Tff7b72= Te6edf3LocalContextTb4b4b4.Te6edf3current

Tff7b72val Te6edf3density Tff7b72= Te6edf3LocalDensityTb4b4b4.Te6edf3currentTb4b4b4.Te6edf3density

Tff7b72val Te6edf3fontScale Tff7b72= Te6edf3LocalDensityTb4b4b4.Te6edf3currentTb4b4b4.Te6edf3fontScale

Tff7b72val Te6edf3clusterManager Tff7b72= Te6edf3rememberClusterManagerTff7b72<Te6edf3NodeClusterItemTff7b72>Tb4b4b4(Tb4b4b4) Tff7b72?: Tff7b72return

T8b949e// Render each non-clustered node as a Canvas-built BitmapDescriptor through a custom

T8b949e// DefaultClusterRenderer instead of passing a `clusterItemContent` Composable. The Composable path makes

T8b949e// maps-compose rasterize the chip through an off-screen ComposeView (ComposeUiClusterRenderer); that view

T8b949e// walks the view tree for a ViewTreeLifecycleOwner/SavedStateRegistryOwner and, because the cluster

T8b949e// renderer drives marker creation from an async Handler after the screen may have stopped, finds none and

T8b949e// crashes with "Composed into the View which doesn't propagate ViewTreeLifecycleOwner!"

T8b949e// (googlemaps/android-maps-compose#325 / #875) — historically our #1 FATAL. A renderer that paints the icon

T8b949e// in onBeforeClusterItemRendered never creates a View, so the crash class is eliminated rather than raced

T8b949e// against (see the owner-propagation workarounds in #5704/#5708 that could not win that race).

Tff7b72val Te6edf3rendererStateTb4b4b4: Te6edf3MutableStateTff7b72<Te6edf3NodeChipClusterRenderer?Tff7b72> Tff7b72= Te6edf3remember Tb4b4b4{ Te6edf3mutableStateOfTb4b4b4(Tff7b72nullTb4b4b4) Tb4b4b4}

Te6edf3MapEffectTb4b4b4(Te6edf3clusterManagerTb4b4b4, Te6edf3densityTb4b4b4, Te6edf3fontScaleTb4b4b4) Tb4b4b4{ Te6edf3map Tff7b72-Tff7b72>

Tff7b72val Te6edf3renderer Tff7b72= Te6edf3NodeChipClusterRendererTb4b4b4(Te6edf3contextTb4b4b4, Te6edf3mapTb4b4b4, Te6edf3clusterManagerTb4b4b4, Te6edf3densityTb4b4b4, Te6edf3fontScaleTb4b4b4)

Te6edf3rendererTb4b4b4.Te6edf3minClusterSize Tff7b72= Te6edf3MIN_CLUSTER_SIZE

Te6edf3clusterManagerTb4b4b4.Te6edf3renderer Tff7b72= Te6edf3renderer

Te6edf3rendererStateTb4b4b4.Te6edf3value Tff7b72= Te6edf3renderer

Tb4b4b4}

Te6edf3SideEffect Tb4b4b4{

Te6edf3clusterManagerTb4b4b4.Te6edf3setOnClusterClickListenerTb4b4b4(Te6edf3onClusterClickTb4b4b4)

Te6edf3clusterManagerTb4b4b4.Te6edf3setOnClusterItemInfoWindowClickListener Tb4b4b4{ Te6edf3item Tff7b72-Tff7b72> Te6edf3navigateToNodeDetailsTb4b4b4(Te6edf3itemTb4b4b4.Te6edf3nodeTb4b4b4.Te6edf3numTb4b4b4) Tb4b4b4}

Tb4b4b4}

Te6edf3ClusteringTb4b4b4(Te6edf3items Tff7b72= Te6edf3nodeClusterItemsTb4b4b4, Te6edf3clusterManager Tff7b72= Te6edf3clusterManagerTb4b4b4)

T8b949e// The library's `clusterItemDecoration` only fires for its internal ComposeUiClusterRenderer (the gating

T8b949e// ClusterRendererItemState type is library-internal), so it never runs for our custom renderer. Draw the

T8b949e// precision circles ourselves for exactly the unclustered items the renderer exposes, preserving the prior

T8b949e// "circle only on non-clustered nodes" behavior.

Tff7b72val Te6edf3renderer Tff7b72= Te6edf3rendererStateTb4b4b4.Te6edf3value

Tff7b72if Tb4b4b4(Te6edf3renderer Tff7b72!Tff7b72= Tff7b72null Tff7b72&Tff7b72& Te6edf3mapFilterStateTb4b4b4.Te6edf3showPrecisionCircleTb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3unclusteredItems Tff7b72by Te6edf3rendererTb4b4b4.Te6edf3unclusteredItems

Te6edf3unclusteredItemsTb4b4b4.Te6edf3forEach Tb4b4b4{ Te6edf3item Tff7b72-Tff7b72>

Te6edf3itemTb4b4b4.Te6edf3getPrecisionMetersTb4b4b4(Tb4b4b4)Tff7b72?.Te6edf3let Tb4b4b4{ Te6edf3precisionMeters Tff7b72-Tff7b72>

Tff7b72if Tb4b4b4(Te6edf3precisionMeters Tff7b72> T79c0ff0Tb4b4b4) Tb4b4b4{

Te6edf3CircleTb4b4b4(

Te6edf3center Tff7b72= Te6edf3itemTb4b4b4.Te6edf3positionTb4b4b4,

Te6edf3radius Tff7b72= Te6edf3precisionMetersTb4b4b4,

Te6edf3fillColor Tff7b72= Te6edf3ColorTb4b4b4(Te6edf3itemTb4b4b4.Te6edf3nodeTb4b4b4.Te6edf3colorsTb4b4b4.Te6edf3secondTb4b4b4)Tb4b4b4.Te6edf3copyTb4b4b4(Te6edf3alpha Tff7b72= T79c0ff0.2fTb4b4b4)Tb4b4b4,

Te6edf3strokeColor Tff7b72= Te6edf3ColorTb4b4b4(Te6edf3itemTb4b4b4.Te6edf3nodeTb4b4b4.Te6edf3colorsTb4b4b4.Te6edf3secondTb4b4b4)Tb4b4b4,

Te6edf3strokeWidth Tff7b72= T79c0ff2fTb4b4b4,

Te6edf3zIndex Tff7b72= T79c0ff0fTb4b4b4,

Tb4b4b4)

Tb4b4b4}

Tb4b4b4}

Tb4b4b4}

Tb4b4b4}

Tb4b4b4}

T8b949e/**

* A [DefaultClusterRenderer] that draws each non-clustered node's chip as a Canvas [BitmapDescriptor]

* ([buildNodeChipDescriptor]) instead of a Composable, avoiding maps-compose's crash-prone off-screen ComposeView

* rasterization. It also exposes the current set of unclustered items so the caller can draw precision circles (the

* library's `clusterItemDecoration` hook is unavailable to non-library renderers).

*/

Tff7b72private Tff7b72class T56d364NodeChipClusterRendererTb4b4b4(

Tff7b72private Tff7b72val Te6edf3contextTb4b4b4: Te6edf3ContextTb4b4b4,

Te6edf3mapTb4b4b4: Te6edf3GoogleMapTb4b4b4,

Te6edf3clusterManagerTb4b4b4: Te6edf3ClusterManagerTff7b72<Te6edf3NodeClusterItemTff7b72>Tb4b4b4,

Tff7b72private Tff7b72val Te6edf3densityTb4b4b4: Tffa657FloatTb4b4b4,

Tff7b72private Tff7b72val Te6edf3fontScaleTb4b4b4: Tffa657FloatTb4b4b4,

Tb4b4b4) Tb4b4b4: Te6edf3DefaultClusterRendererTff7b72<Te6edf3NodeClusterItemTff7b72>Tb4b4b4(Te6edf3contextTb4b4b4, Te6edf3mapTb4b4b4, Te6edf3clusterManagerTb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3unclusteredItemsTb4b4b4: Te6edf3MutableStateTff7b72<Te6edf3SetTff7b72<Te6edf3NodeClusterItemTff7b72>Tff7b72> Tff7b72= Te6edf3mutableStateOfTb4b4b4(Te6edf3emptySetTb4b4b4(Tb4b4b4)Tb4b4b4)

T8b949e// Called on a background render thread — building the descriptor here keeps marker rasterization off the

T8b949e// main thread, and BitmapDescriptorFactory is safe once the SDK is initialized (the live map guarantees it).

Tff7b72override Tff7b72fun Td2a8ffonBeforeClusterItemRenderedTb4b4b4(Te6edf3itemTb4b4b4: Te6edf3NodeClusterItemTb4b4b4, Te6edf3markerOptionsTb4b4b4: Te6edf3MarkerOptionsTb4b4b4) Tb4b4b4{

Te6edf3markerOptions

Tb4b4b4.Te6edf3iconTb4b4b4(Te6edf3buildNodeChipDescriptorTb4b4b4(Te6edf3contextTb4b4b4, Te6edf3itemTb4b4b4.Te6edf3nodeTb4b4b4, Te6edf3densityTb4b4b4, Te6edf3fontScaleTb4b4b4)Tb4b4b4)

Tb4b4b4.Te6edf3anchorTb4b4b4(Te6edf3CHIP_ANCHOR_UTb4b4b4, Te6edf3CHIP_ANCHOR_VTb4b4b4)

Tb4b4b4.Te6edf3zIndexTb4b4b4(Te6edf3itemTb4b4b4.Te6edf3getZIndexTb4b4b4(Tb4b4b4)Tb4b4b4)

Tb4b4b4}

Tff7b72override Tff7b72fun Td2a8ffonClusterItemUpdatedTb4b4b4(Te6edf3itemTb4b4b4: Te6edf3NodeClusterItemTb4b4b4, Te6edf3markerTb4b4b4: Te6edf3MarkerTb4b4b4) Tb4b4b4{

Te6edf3markerTb4b4b4.Te6edf3setIconTb4b4b4(Te6edf3buildNodeChipDescriptorTb4b4b4(Te6edf3contextTb4b4b4, Te6edf3itemTb4b4b4.Te6edf3nodeTb4b4b4, Te6edf3densityTb4b4b4, Te6edf3fontScaleTb4b4b4)Tb4b4b4)

Te6edf3markerTb4b4b4.Te6edf3zIndex Tff7b72= Te6edf3itemTb4b4b4.Te6edf3getZIndexTb4b4b4(Tb4b4b4)

Tb4b4b4}

Tff7b72override Tff7b72fun Td2a8ffonClustersChangedTb4b4b4(Te6edf3clustersTb4b4b4: Te6edf3SetTff7b72<Te6edf3ClusterTff7b72<Te6edf3NodeClusterItemTff7b72>Tff7b72>Tb4b4b4) Tb4b4b4{

Tff7b72superTb4b4b4.Te6edf3onClustersChangedTb4b4b4(Te6edf3clustersTb4b4b4)

Te6edf3unclusteredItemsTb4b4b4.Te6edf3value Tff7b72= Te6edf3clustersTb4b4b4.Te6edf3filterNot Tb4b4b4{ Te6edf3shouldRenderAsClusterTb4b4b4(Tffa657itTb4b4b4) Tb4b4b4}Tb4b4b4.Te6edf3flatMap Tb4b4b4{ Tffa657itTb4b4b4.Te6edf3items Tb4b4b4}Tb4b4b4.Te6edf3toSetTb4b4b4(Tb4b4b4)

Tb4b4b4}

Tb4b4b4}