'translate' is deprecated and shouldn't be used. Use translateByVector3, translateByVector4, or translateByDouble instead

Question

I have integrated zoom image logic on double tap here is full code

 void _handleDoubleTap(Offset tapPosition) {
    if (_isZoomed) {
      _transformationController.value = Matrix4.identity();
      _isZoomed = false;
    } else {
      final RenderBox renderBox = context.findRenderObject() as RenderBox;
      final Size size = renderBox.size;

      double zoomScale = 2.5;
      double x = -(tapPosition.dx * (zoomScale - 1));
      double y = -(tapPosition.dy * (zoomScale - 1));

      // Ensure boundaries
      x = x.clamp(-size.width, 0);
      y = y.clamp(-size.height, 0);

      _transformationController.value =
          Matrix4.identity()
            ..translate(x, y)
            ..scale(zoomScale);

      _isZoomed = true;
    }
  }

where i user Matrix4 params which are deprecated so i need solution for this can anyone help me with this?

Akhil George · Accepted Answer · 2025-09-09 12:20:37Z

1

this issue can solve by using translateByVector3, translateByVector4, or translateByDouble depending on your use case.

Since you’re working with 2D translation (x and y only), the correct replacement is translateByVector3.

_transformationController.value = Matrix4.identity()
  ..translateByVector3(Vector3(x, y, 0))
  ..scale(zoomScale);

answered Sep 9 at 12:20

Akhil George

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