Type Alias SolidEChartSurfaceHandler

Remarks

Unlike SolidEChartEventHandler which fires only when the pointer is over a data graphic element, surface handlers fire everywhere on the rendering surface. Use event.target to check whether the pointer was over a graphic element or blank space:

const handleSurfaceClick: SolidEChartSurfaceHandler = (event) => {
  if (!event.target) {
    // Clicked on blank area - no graphic element under the pointer
  }
};
Copy

The offsetX and offsetY fields carry canvas-relative coordinates, useful for custom tooltip positioning, overlay drawing, or hit testing.