don't show scalebar when the map is not initialized yet (#249)

sargunv · Jan 15, 2025 · b71d194 · b71d194
1 parent 8348ef5
commit b71d194
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Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/...aterial3/src/commonMain/kotlin/dev/sargunv/maplibrecompose/material3/controls/ScaleBar.kt b/...aterial3/src/commonMain/kotlin/dev/sargunv/maplibrecompose/material3/controls/ScaleBar.kt
@@ -56,6 +56,9 @@ public fun ScaleBar(
   textStyle: TextStyle = MaterialTheme.typography.labelSmall,
   alignment: Alignment.Horizontal = Alignment.Start,
 ) {
+  // when map is not fully initialized yet
+  if (metersPerDp == 0.0) return
+
   val textMeasurer = rememberTextMeasurer()
   // longest possible text
   val maxTextSizePx =

diff --git a/...maplibre-compose/src/commonMain/kotlin/dev/sargunv/maplibrecompose/compose/CameraState.kt b/...maplibre-compose/src/commonMain/kotlin/dev/sargunv/maplibrecompose/compose/CameraState.kt
@@ -57,7 +57,7 @@ public class CameraState internal constructor(firstPosition: CameraPosition) {
   public val moveReason: CameraMoveReason
     get() = moveReasonState.value
 
-  /** meters per dp at the target position */
+  /** meters per dp at the target position. Zero when the map is not initialized yet. */
   public val metersPerDpAtTarget: Double
     get() = metersPerDpAtTargetState.value