ZoomController class

This controller handles:

• Zoom in/out operations
• Zoom buttons state management
• Continuous zoom functionality
• Zoom availability monitoring

The controller provides zoom control through ZoomModel and manages the state of zoom buttons based on current map zoom constraints.

Usage example:

final controller = ZoomController(
  map: mapInstance,
);

// Check zoom buttons availability
print('Zoom in available: ${controller.state.value.zoomInEnabled}');
print('Zoom out available: ${controller.state.value.zoomOutEnabled}');

// Handle zoom in operation
controller.startZoomIn();  // Start zooming in
// ... after some time or user action
controller.endZoomIn();    // Stop zooming in

// Listen to zoom availability changes
controller.state.addListener(() {
  final model = controller.state.value;
  print('Zoom in ${model.zoomInEnabled ? "enabled" : "disabled"}');
  print('Zoom out ${model.zoomOutEnabled ? "enabled" : "disabled"}');
});

The controller maintains two subscriptions for monitoring zoom button states and provides methods for both momentary and continuous zoom operations.

Remember to dispose of the controller when it's no longer needed:

controller.dispose();

Constructors

ZoomController({required Map map})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

map → Map

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

state → ValueNotifier<ZoomModel>

no setter

Methods

dispose() → void

endZoomIn() → void

endZoomOut() → void

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

startZoomIn() → void

startZoomOut() → void

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited