kscience/maps-kt
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Change state propagation and rectangle selection

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This commit is contained in:
Alexander Nozik 2022-09-13 19:01:23 +03:00
parent 6b0a2566bd
commit fa51fc03db
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GPG Key ID: F7FCF2DD25C71357
3 changed files with 11 additions and 11 deletions
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4
demo/maps/src/jvmMain/kotlin/Main.kt
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@ -96,8 +96,8 @@ fun App() {
centerCoordinates?.let {
group(id = "center") {
circle(center = it, color = Color.Blue, size = 1f)
text(position = it, it.toShortString(), color = Color.Blue)
circle(center = it, color = Color.Blue, id = "circle", size = 1f)
text(position = it, it.toShortString(), id = "text", color = Color.Blue)
}
}

10
maps-kt-compose/src/commonMain/kotlin/center/sciprog/maps/compose/MapFeatureBuilder.kt
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@ -30,7 +30,7 @@ public interface MapFeatureBuilder {
public val features: MutableMap<FeatureId, MapFeature>
public fun attributes(): Map<FeatureId, MapFeatureAttributeSet>
public val attributes: Map<FeatureId, MapFeatureAttributeSet>
//TODO use context receiver for that
public fun FeatureId.draggable(enabled: Boolean = true) {
@ -42,7 +42,7 @@ internal class MapFeatureBuilderImpl(
override val features: SnapshotStateMap<FeatureId, MapFeature>,
) : MapFeatureBuilder {
private val attributes = SnapshotStateMap<FeatureId, SnapshotStateMap<MapFeatureAttributeKey<out Any?>, in Any?>>()
private val _attributes = SnapshotStateMap<FeatureId, SnapshotStateMap<MapFeatureAttributeKey<out Any?>, in Any?>>()
private fun generateID(feature: MapFeature): FeatureId = "@feature[${feature.hashCode().toUInt()}]"
@ -54,11 +54,11 @@ internal class MapFeatureBuilderImpl(
}
override fun <T> setAttribute(id: FeatureId, key: MapFeatureAttributeKey<T>, value: T) {
attributes.getOrPut(id) { SnapshotStateMap() }[key] = value
_attributes.getOrPut(id) { SnapshotStateMap() }[key] = value
}
override fun attributes(): Map<FeatureId, MapFeatureAttributeSet> =
attributes.mapValues { MapFeatureAttributeSet(it.value) }
override val attributes: Map<FeatureId, MapFeatureAttributeSet>
get() = _attributes.mapValues { MapFeatureAttributeSet(it.value) }
}

8
maps-kt-compose/src/commonMain/kotlin/center/sciprog/maps/compose/MapView.kt
View File

@ -104,15 +104,15 @@ public fun MapView(
buildFeatures: @Composable (MapFeatureBuilder.() -> Unit) = {},
) {
var viewPointOverride by remember { mutableStateOf(initialViewPoint ?: MapViewPoint.globe) }
var viewPointOverride by remember(initialViewPoint, initialRectangle) { mutableStateOf(initialViewPoint ?: MapViewPoint.globe) }
val featuresBuilder = MapFeatureBuilderImpl(mutableStateMapOf()).apply { buildFeatures() }
val features: SnapshotStateMap<FeatureId, MapFeature> = remember { featuresBuilder.features }
val features: SnapshotStateMap<FeatureId, MapFeature> = remember(buildFeatures) { featuresBuilder.features }
val attributes = remember { featuresBuilder.attributes() }
val attributes = remember(buildFeatures) { featuresBuilder.attributes }
val featureDrag = remember {
val featureDrag by derivedStateOf {
DragHandle.withPrimaryButton { _, start, end ->
val zoom = start.zoom
attributes.filterValues {