animateToBounds method

void animateToBounds(GraphRect bounds, { double padding = 50.0, Duration duration = const Duration(milliseconds: 400), Curve curve = Curves.easeInOut, })

Animates the viewport to fit a bounding rectangle with padding.

The viewport will be adjusted to show all content within the bounds, with the specified padding on all sides.

Parameters:

• bounds: The bounding rectangle in graph coordinates
• padding: Padding around the bounds in screen pixels (default: 50)
• duration: Animation duration (default: 400ms)
• curve: Animation curve (default: easeInOut)

Example:

controller.animateToBounds(GraphRect(Rect.fromLTWH(0, 0, 500, 300)));
controller.animateToBounds(bounds, padding: 100);

Implementation

void animateToBounds(
  GraphRect bounds, {
  double padding = 50.0,
  Duration duration = const Duration(milliseconds: 400),
  Curve curve = Curves.easeInOut,
}) {
  if (_screenSize.value == Size.zero || bounds.isEmpty) return;

  final contentWidth = bounds.width;
  final contentHeight = bounds.height;

  // Calculate zoom to fit content with padding
  final scaleX = (_screenSize.value.width - padding * 2) / contentWidth;
  final scaleY = (_screenSize.value.height - padding * 2) / contentHeight;
  final targetZoom = (scaleX < scaleY ? scaleX : scaleY).clamp(
    _config.minZoom.value,
    _config.maxZoom.value,
  );

  // Calculate center of bounds
  final center = bounds.center;

  animateToViewport(
    GraphViewport(
      x: _screenSize.value.width / 2 - center.dx * targetZoom,
      y: _screenSize.value.height / 2 - center.dy * targetZoom,
      zoom: targetZoom,
    ),
    duration: duration,
    curve: curve,
  );
}