2Gis Map SDK for Compose/ru.dgis.sdk.compose.map.controls.modern.zoom/ZoomViewModel

ZoomViewModel

interface ZoomViewModel

Manages the state and behavior of the zoom control. Implementations push updates as the map zoom state changes.

Thread Safety

This ViewModel is not thread-safe and must only be accessed from the Main thread.

  • All methods must be called from the Main (UI) thread

  • All StateFlow properties emit values on the Main thread

  • Concurrent access from multiple threads may lead to undefined behavior

Inheritors

Properties

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abstract val isZoomInEnabled: StateFlow<Boolean>

Observable state indicating whether zooming in is currently available. When false, the zoom-in button should appear disabled.

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abstract val isZoomOutEnabled: StateFlow<Boolean>

Observable state indicating whether zooming out is currently available. When false, the zoom-out button should appear disabled.

Functions

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abstract fun onCleared()

Releases resources when the view model is no longer needed.

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abstract fun onZoomInPressed()

Called when the user presses the zoom-in button.

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abstract fun onZoomInReleased()

Called when the user releases the zoom-in button.

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abstract fun onZoomOutPressed()

Called when the user presses the zoom-out button.

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abstract fun onZoomOutReleased()

Called when the user releases the zoom-out button.