measurer 2.1.1 measurer: ^2.1.1 copied to clipboard
A widget that measure the size of its child.
measurer #
A widget that measure the size of its child.
Quickstart #
@override
Widget build(BuildContext context) {
return Measurer(
onMeasure: (size,constraints) {
print('Child new size: $size');
},
child: Child(),
);
}
Usage #
onMeasure #
A callback to that is called each time the layout size of the child changes.
onPaintBoundsChanged #
A callback to that is called each time the painting bound size (an absolute rectangle that contains all the pixels painted by the child) of the child changes.