BuchheimWalkerAlgorithm example not working.

nabil6391 / graphview

Flutter GraphView is used to display data in graph structures. It can display Tree layout, Directed and Layered graph. Useful for Family Tree, Hierarchy View.

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BuchheimWalkerAlgorithm example not working. #26

Closed kzrfaisal closed 3 years ago

kzrfaisal commented 3 years ago

Throwing this error: The following assertion was thrown during performLayout(): RenderCustomLayoutBox does not meet its constraints.

Constraints: BoxConstraints(0.0<=w<=411.4, 0.0<=h<=Infinity) Size: Size(875.0, 654.0)

If you are not writing your own RenderBox subclass, then this is not your fault. Contact support: https://github.com/flutter/flutter/issues/new?template=BUG.md

The relevant error-causing widget was GraphView

nabil6391 commented 3 years ago

Try this:

Expanded( child: InteractiveViewer( constrained: false, boundaryMargin: EdgeInsets.all(100), minScale: 0.01, maxScale: 5.6, child: GraphView( graph: graph, algorithm: BuchheimWalkerAlgorithm(builder, TreeEdgeRenderer(builder)), paint: Paint() ..color = Colors.green ..strokeWidth = 1 ..style = PaintingStyle.stroke, )), ),

kzrfaisal commented 3 years ago

Great it worked.....Thanks a lot